JP7439355B2 - Trough for open rack type vaporizer and open rack type vaporizer - Google Patents

Description

The present invention relates to a trough for an open rack type vaporizer and a vaporizer equipped with the trough.

An open rack type vaporizer is known that vaporizes liquefied gas using a heating liquid overflowing from a trough having a box structure that opens upward (see Patent Document 1). The trough of Patent Document 1 includes a bottom plate in which an inlet into which heating liquid flows is formed, and a peripheral wall that stands up from the bottom plate. The peripheral wall includes a pair of weir plates arranged at positions separated from each other so as to face the heat transfer panel through which the liquefied gas is flowing, and a pair of side plates connecting the pair of weir plates at positions separated from each other. are doing.

When the amount of heating liquid supplied to the trough through the inlet exceeds the volume of the trough, it overflows from the trough and flows down the outer surface of the heat transfer panel. During this time, the heating liquid applies heat to the liquefied gas, and the liquefied gas is vaporized.

Japanese Patent Application Publication No. 2017-150784

Regarding the trough described above, it is desirable that the liquid level in the trough be as flat as possible. In order to smooth the liquid level, it is conceivable to arrange a perforated plate at a position higher than the inlet so as to partition the internal space of the trough into upper and lower parts. If the perforated plate becomes clogged, it is necessary to remove the perforated plate from the trough to clear the clogging.

The object of the invention is to provide a trough and a vaporization device comprising a trough, making it possible to move a plurality of perforated plates individually.

A trough for an open rack type vaporizer according to one aspect of the present invention is configured to vaporize liquefied gas flowing through a plurality of heat transfer tubes arranged in an upright position. The trough is long in the alignment direction of the plurality of heat exchanger tubes, and has a pair of vertical plates arranged at intervals in the width direction of the trough, and an internal space of the trough is partitioned vertically between the pair of vertical plates. a plurality of perforated plate members arranged in the alignment direction in a horizontal position to suppress undulating or bulging of the liquid surface in the trough; and a pair of support parts provided on the pair of vertical plates so as to support the perforated plate member at a predetermined height position. The pair of support parts are configured to support the plurality of perforated plate members while allowing the plurality of perforated plate members to be individually moved so as to open the internal space of the trough . .

According to the above configuration, the pair of supporting parts suppresses the floating of the plurality of perforated plate members, so that these perforated plate members suppress undulations and bulges on the liquid surface without rising above a predetermined height position. be able to. Further, each of the plurality of perforated plate members can be moved individually. By moving the perforated plate member, the inside of the trough can be opened.

A trough for an open rack type vaporizer according to another aspect of the present invention is configured to vaporize liquefied gas flowing through a plurality of heat transfer tubes arranged in an upright position. The trough is long in the alignment direction of the plurality of heat exchanger tubes, and is arranged in the alignment direction between a pair of vertical plates arranged at intervals in the width direction of the trough, and the trough is arranged in the alignment direction between the pair of vertical plates. a plurality of perforated plate members each having a width narrower than the width of the internal space of the plurality of perforated plate members; A pair of supporting parts provided. The pair of supporting parts prevents the perforated plate members to be moved from a holding position vertically sandwiching both ends of each of the plurality of perforated plate members in the width direction to a moving position where the perforated plate members to be moved are individually moved in the width direction. configured to allow it. The supporting portion on the opposite side to the moving direction of the perforated plate member to be moved toward the moving position is configured to prevent the perforated plate member to be moved from coming out when the perforated plate member to be moved moves to the moving position. is configured to allow. The supporting part on the moving direction side is configured to allow the perforated plate member in the moving position to be rotated up and down, and also to move the perforated plate member after the rotation in the alignment direction. It is configured so that it can be removed without any damage.

According to the above configuration, when the perforated plate member to be moved is moved in the width direction, the perforated plate member to be moved is removed from the support portion on the opposite side to the moving direction toward the moving position. That is, the hold on the end of the perforated plate member on the opposite side to the moving direction is released. At this time, the support section on the moving direction side allows vertical rotation of the perforated plate member in the moving position or removal of the perforated plate member in the moving position without moving it in the alignment direction. Even when the perforated plate member is rotated or removed, the perforated plate member does not move in the direction in which the plurality of perforated plate members are aligned. Therefore, the perforated plate member to be moved can be moved regardless of the adjacent perforated plate members, and the inside of the trough can be opened by this movement.

Regarding the above configuration, the trough is a stopper that prevents each of the plurality of perforated plate members from moving in the moving direction before each of the plurality of perforated plate members comes out of the supporting part on the opposite side. It may further include. The stopper is removable from the support portion on the moving direction side.

According to the above configuration, the stopper can prevent the plurality of perforated plate members from slipping out from the support portion on the opposite side.

Regarding the above configuration, the support part on the moving direction side has an upper part protruding in the width direction from the vertical plate on the moving direction side, and an end part of the plurality of perforated plate members on the moving direction side together with the upper part. It may also include a lower part protruding in the width direction from the upright plate on the moving direction side so as to sandwich it therebetween. The amount of protrusion of the lower portion may be different from the amount of protrusion of the upper portion.

According to the above configuration, if the amount of protrusion of the upper portion is smaller than the amount of protrusion of the lower portion, an opening portion facing diagonally upward is formed in the support portion on the moving direction side between the tips of the upper portion and the lower portion. In this case, the perforated plate member to be moved can be rotated upward around the end. Conversely, if the amount of protrusion of the upper part is larger than the amount of protrusion of the lower part, an opening portion facing diagonally downward is formed between the tips of the upper part and the lower part. In this case, the perforated plate member to be moved can be rotated upward around the end.

Regarding the above configuration, the end portions of the plurality of perforated plate members may have a bulging portion that bulges upward or downward. The supporting portion on the moving direction side may be configured to engage with the bulging portion when the plurality of perforated plate members move in a direction opposite to the moving direction.

According to the above configuration, when the perforated plate member tries to move in the opposite direction to the moving direction, the support part on the moving direction side engages with the bulge part, so the movement of the perforated plate member in the opposite direction is suppressed. be done.

Regarding the above configuration, each of the plurality of perforated plate members may have an opening adjacent to the end on the moving direction side. The support section on the moving direction side may include a plurality of support pieces arranged corresponding to the positions of the plurality of perforated plate members. Each of the plurality of support pieces is inserted into the opening so as to connect the upper part located above the corresponding perforated plate member, the lower part located below this perforated plate member, and the upper part and the lower part. It may also have a connecting part. Each of the plurality of support pieces allows the end of the corresponding perforated plate member on the moving direction side to move in the moving direction within a space between the upper part, the lower part, and the connecting part. In addition, the corresponding perforated plate member may be allowed to rotate around the end portion on the moving direction side.

According to the above configuration, after the perforated plate part is moved in the moving direction, it is rotated upward or downward around the end in the space between the upper part, the lower part, and the connecting part. The perforated plate part can be supported by the lower part in a rotated position.

Regarding the above configuration, the opening may be formed as a closed space. One of the upper and lower parts may be configured to allow the end of the corresponding perforated plate member on the moving direction side to be extracted from the space.

According to the above configuration, since the opening is a closed space, the perforated plate member is prevented from slipping out unintentionally.

Regarding the above configuration, the pair of support parts may be arranged at a height position that does not contact the bottom plate of the trough when the perforated plate member to be moved is rotated downward.

According to the above configuration, the perforated plate member to be moved can be supported by the support piece so that the perforated plate member to be moved hangs from the support piece.

Regarding the above configuration, each of the plurality of perforated plate members includes a pair of perforated plates arranged in the width direction and a hinge connecting the pair of perforated plates that allows each of the plurality of perforated plate members to bend. It may also include.

According to the above configuration, if the perforated plate member is rotated upward while being bent, the rotation area of the perforated plate member is equal to that required when rotating a perforated plate member having an unbending structure upward. It is narrower than the rotation area. Therefore, even if other equipment for the vaporizer is present above the perforated plate member, the perforated plate member can be rotated upward without coming into contact with the other equipment.

Regarding the above configuration, the trough may further include a bend prevention part that is detachable from each of the plurality of perforated plate members. The bending prevention portion may be configured to prevent the bending when attached to a corresponding perforated plate member.

According to the above configuration, when the bending prevention section is attached to the perforated plate member, the perforated plate member is prevented from being bent. When the bending prevention portion is removed from the perforated plate member, the perforated plate member can be rotated while being bent.

An open rack type vaporizer according to another aspect of the present invention includes the above-mentioned trough, and a plurality of plurality of troughs configured such that the liquefied gas flows inside and the heating liquid overflowing from the trough flows on the outer surface. and a heat transfer panel having heat transfer tubes.

The technique described above allows multiple perforated plates to be moved individually.

FIG. 1 is a schematic perspective view of an open rack type vaporizer according to a first embodiment. FIG. 2 is a schematic longitudinal cross-sectional view of the vaporization device. It is a schematic plan view of the box of a vaporization device. FIG. 3 is a schematic vertical cross-sectional view of the box. FIG. 3 is a schematic plan view of a perforated plate member that partitions the internal space of the box into upper and lower parts. FIG. 3 is a schematic vertical cross-sectional view of a perforated plate member. It is a schematic longitudinal cross-sectional view of the support part attached to the upright board of a box body. It is a schematic longitudinal cross-sectional view of the support part attached to the upright board of a box body. FIG. 3 is a schematic vertical cross-sectional view of the box. FIG. 3 is a schematic vertical cross-sectional view of the box. It is a schematic plan view of a box. FIG. 3 is a schematic vertical cross-sectional view of the box. FIG. 3 is a schematic vertical cross-sectional view of the box. FIG. 7 is a schematic plan view of a box of an open rack type vaporizer according to a second embodiment. FIG. 3 is a schematic vertical cross-sectional view of the box. FIG. 3 is a schematic vertical cross-sectional view of the box. FIG. 3 is a schematic vertical cross-sectional view of the box. It is a schematic plan view of the box of the open rack type vaporization device of 3rd Embodiment. FIG. 3 is a schematic vertical cross-sectional view of the box. FIG. 3 is a schematic vertical cross-sectional view of the box. FIG. 3 is a schematic vertical cross-sectional view of the box. FIG. 3 is a schematic vertical cross-sectional view of the box. FIG. 3 is a schematic plan view of a perforated plate member.

<First embodiment>
FIG. 1 is a schematic perspective view of an open rack vaporizer (ORV) 100. FIG. 2 is a schematic vertical cross-sectional view of the vaporizer 100. A vaporizer 100 will be described with reference to FIGS. 1 and 2.

The vaporizer 100 is configured to exchange heat between liquefied natural gas (hereinafter referred to as "liquefied gas") with a heating liquid having a higher temperature than the liquefied gas, and vaporize the liquefied gas. The gaseous natural gas obtained as a result of the heat exchange is referred to as "vaporized gas" in the following description. In this embodiment, seawater is used as the heating liquid. Alternatively, a liquid having a higher temperature than the vaporized gas may be utilized as the heating liquid.

The vaporizer 100 includes a plurality of heat transfer panels 113 on which the above-described heat exchange occurs, and a plurality of troughs 130 configured to supply heating liquid to the outer surfaces of these heat transfer panels 113. The vaporizer 100 further includes a lower manifold 111 configured to distribute liquefied gas to these heat transfer panels 113 and an upper manifold 112 into which the vaporized gas generated within these heat transfer panels 113 flows. There is. The vaporizer 100 further includes a pump 121, a manifold 122, and a plurality of supply pipes 123, which are used to supply heating liquid to the trough 130 described above.

The plurality of heat transfer panels 113 are arranged in an upright position and are arranged at intervals. Each of these heat transfer panels 113 has a lower header tube 114, an upper header tube 115, and a plurality of heat transfer tubes 116. The lower header pipe 114 and the upper header pipe 115 extend in a direction substantially perpendicular to the direction in which the heat transfer panels 113 are aligned. The upper header pipe 115 is arranged at a position spaced upward from the lower header pipe 114 and forms the upper end of the heat transfer panel 113. On the other hand, the lower header pipe 114 forms the lower edge of the heat transfer panel 113. The plurality of heat exchanger tubes 116 are arranged in an upright position and are aligned in the extending direction of the lower header tube 114 and the upper header tube 115. These heat transfer tubes 116 extend upward from the lower header tube 114 and are connected to the upper header tube 115.

The lower manifold 111 extends in the direction in which the heat transfer panels 113 are aligned. One end of a lower header pipe 114 is connected to a plurality of outlet ports (not shown) formed on the circumferential surface of the lower manifold 111 . The lower manifold 111 is also connected to a pump (not shown) that supplies liquefied gas.

The upper manifold 112 is spaced upward from the lower manifold 111 and extends in the direction in which the heat transfer panels 113 are aligned. One end of the upper header pipe 115 is connected to a plurality of inflow ports (not shown) formed on the circumferential surface of the upper manifold 112 . The upper manifold 112 is also connected to a predetermined consumer that uses the vaporized gas or a tank that stores the vaporized gas (not shown).

Pump 121 is configured to supply heating liquid. Pump 121 is connected to an inlet of manifold 122 via a conduit (not shown).

The manifold 122 extends in the direction in which the heat transfer panels 113 are aligned. A plurality of outlet ports 125 are formed on the circumferential surface of the manifold 122 . These outflow ports 125 are formed at intervals in the extending direction of the manifold 122. The base ends of a plurality of supply pipes 123 are connected to these outlet ports 125 . These supply pipes 123 extend from the outlet 125 toward the troughs 130, and the tips of these supply pipes 123 are connected to the plurality of troughs 130.

A schematic plan view of one of these troughs 130 is shown in FIG. A schematic longitudinal cross-sectional view of the trough 130 is shown in FIG. Trough 130 will be described with reference to FIGS. 1-4.

The plurality of troughs 130 are arranged at intervals in the alignment direction of the heat transfer panels 113, and are lined up alternately with the heat transfer panels 113. Each of the plurality of troughs 130 includes an upwardly opened box 131 and a guide portion 139 provided to guide the heating liquid overflowing from the box 131 to the heat transfer panel 113. In addition, the trough 130 includes a plurality of perforated plate members 160 disposed within the box body 131 and a pair of support parts 171 and 172 that support the perforated plate members 160 (see FIGS. 3 and 4). ).

The box body 131 has a box structure that is long in the direction in which the heat exchanger tubes 116 are aligned. Specifically, the box 131 includes a substantially rectangular bottom plate 132 that is long in the direction in which the heat exchanger tubes 116 are aligned, and a peripheral wall 133 that stands up from the periphery of the bottom plate 132. The bottom plate 132 is in a substantially horizontal position, while the peripheral wall 133 is in a substantially vertical position. The length of the box 131 (that is, the size of the box 131 in the alignment direction of the heat transfer tubes 116) is greater than the distance between the heat transfer tubes 116 at both ends of the heat transfer panel 113.

The peripheral wall 133 includes a side plate 136 erected on the manifold 122 side, and another side plate 137 erected at a position spaced apart from the side plate 136 in the alignment direction of the heat transfer tubes 116 . An inlet 138 is formed in the side plate 136 to which the tip of the supply pipe 123 is connected. The center of the inlet 138 is located at the lower part of the side plate 136 (that is, below the intermediate position of the side plate 136 in the height direction).

The peripheral wall 133 further includes a pair of weir plates 134 and 135 (standing plates) extending from the side plate 136 in the alignment direction of the heat exchanger tubes 116 in an upright position. Both end edges (that is, edges extending in the height direction) of the weir plates 134 and 135 in the alignment direction of the heat exchanger tubes 116 are connected to side plates 136 and 137. That is, the weir plates 134 and 135 face each other in a direction perpendicular to the direction in which the heat exchanger tubes 116 are aligned. In the following description, the direction perpendicular to the alignment direction of the heat exchanger tubes 116 is referred to as the "width direction."

The heights of the weir plates 134 and 135 of the trough 130 arranged between adjacent heat transfer panels 113 are lower than or substantially equal to the heights of the side plates 136 and 137.

The guide portion 139 is a plate-shaped portion that slopes diagonally downward from the upper edges of the weir plates 134 and 135. The trough 130 disposed between adjacent heat transfer panels 113 has two guide portions 139 . The trough 130 located outside the row of heat transfer panels 113 has one guide 139 . This guide portion 139 is provided so as to be inclined diagonally downward from the upper edge of the standing plate facing the heat transfer panel 113.

The plurality of perforated plate members 160 have a substantially rectangular shape in plan view. These perforated plate members 160 are arranged in the box 131 in a substantially horizontal position. These perforated plate members 160 are arranged above the inlet 138 and below the upper edges of the weir plates 134 and 135, and are arranged in the direction in which the heat exchanger tubes 116 are aligned, and are arranged in the internal space of the box body 131. The entire area is divided into upper and lower parts. A schematic plan view of one of these perforated plate members 160 is shown in FIG. A schematic cross-sectional view (cross-section in the width direction) of the perforated plate member 160 is shown in FIG. The perforated plate member 160 will be explained with reference to FIGS. 3 to 6.

The perforated plate member 160 is a plate-shaped member having a width narrower than the width of the internal space of the box body 131. Specifically, the perforated plate member 160 includes a flat plate portion 161 in which a large number of through holes are formed, and a round bar-shaped end portion 163 extending in the alignment direction of the heat exchanger tubes 116 at one end in the width direction of the plate portion 161. Contains. A substantially rectangular notch 164 is provided at the other end of the plate portion 161 in the width direction. The end portion 166 includes a notch edge 165 extending in the alignment direction of the heat exchanger tubes 116 at the notch 164, and a proximal edge 199 extending in the alignment direction of the heat exchanger tubes 116 closer to the weir plate 134 than the notch edge 165. Contains.

The end portion 163 is configured to function as a shaft portion that is an axis of rotation when the perforated plate member 160 is rotated during the removal operation of the perforated plate member 160. The end portion 163 includes a bulging portion 167 bulging downward from the lower surface of the plate portion 161 and a bulging portion 168 bulging upward from the upper surface of the plate portion 161. These bulges 167 and 168 have a substantially semicircular cross section. That is, the end portion 163 is thicker than the plate portion 161 and has a substantially circular cross section.

The support parts 171 and 172 are configured to vertically sandwich both ends of the perforated plate member 160 in the width direction of the trough 130, respectively. A schematic cross-sectional view of the support 171 is shown in FIG. A schematic cross-sectional view of the support 172 is shown in FIG. The support portions 171, 172 will be explained with reference to FIGS. 3 to 5, FIG. 7, and FIG. 8.

The support portion 171 is provided on the weir plate 135 and is configured to vertically sandwich the end portion 163 of the porous plate member 160. The support portion 172 is provided on the weir plate 134 and is configured to vertically sandwich an end portion opposite to the end portion 163 (that is, a portion around the notch edge 165).

The support portion 171 is a rail member extending between the side plates 136 and 137 in the direction in which the heat exchanger tubes 116 are aligned. The height position of the support portion 171 is set so as to obtain the above-mentioned height position of the perforated plate member 160 (that is, above the inlet 138 and below the upper edges of the weir plates 134 and 135). . A plurality of perforated plate members 160 are inserted into the support portion 171 in the width direction.

The support portion 171 has a fixing portion 173 extending in the alignment direction of the heat exchanger tubes 116, an upper portion 174, and a lower portion 175. The upper portion 174 and the lower portion 175 are plate-shaped portions that are vertically spaced apart from each other. The fixing part 173 is arranged between the upper part 174 and the lower part 175 so as to be in contact with the inner surface of the weir plate 135, and is fixed to the weir plate 135. The fixing portion 173 may be welded to the inner surface of the weir plate 135 or may be screwed to the weir plate 135.

The upper portion 174 is a plate-shaped portion that protrudes from the upper end of the fixed portion 173 toward the weir plate 134 in a substantially horizontal position. The lower part 175 includes a horizontal plate part 176 that projects from the lower end of the fixed part 173 toward the weir plate 134 in a substantially horizontal position at a position spaced downward from the upper part 174, and a tip part 177 that curves upward from the horizontal plate part 176. Contains. The distance from the inner surface of the weir plate 135 to the tip 177 (i.e., the amount of protrusion of the lower part 175 from the weir plate 135) is the distance from the inner surface of the weir plate 135 to the tip of the upper part 174 (i.e., the distance from the weir plate 135 to the tip of the upper part 174). 174 protrusion). Specifically, the horizontal plate portion 176 protrudes from the inner surface of the weir plate 135 by a larger protrusion amount than the protrusion amount of the upper portion 174, and the tip portion 177 is located closer to the weir plate 134 than the tip of the upper portion 174. It curves upward from the tip. Since the amount of protrusion of the upper portion 174 is smaller than the amount of protrusion of the lower portion 175, an opening 169 that opens diagonally upward is formed between the tip of the upper portion 174 and the tip portion 177 of the lower portion 175. The opening 169 is used to remove the perforated plate member 160 from the support portion 171. Therefore, the size of the opening 169 (ie, the distance between the tip of the upper portion 174 and the tip 177 of the lower portion 175) is larger than the diameter of the end portion 163. Since the opening 169 opens obliquely upward, it allows the perforated plate member 160 to rotate upward in a state where the perforated plate member 160 is removed from the support portion 172. Therefore, the size of the opening 169 is set to a size that allows not only the diameter of the end 163 but also the upward rotation required for removing the perforated plate member 160.

The end portion 163 and a portion of the plate portion 161 are accommodated in the space between the upper portion 174 and the lower portion 175. That is, the perforated plate member 160 is inserted into the support portion 171 in the width direction. The upper surface of the horizontal plate portion 176 of the lower portion 175 is in contact with the peripheral surface of the bulge portion 167 on the lower side of the end portion 163.

The support portion 171 is configured such that a space 179 is formed on the weir plate 135 side with respect to the end portion 163 of the porous plate member 160 inserted into the support portion 171 . The width of the space between the upper part 174 and the lower part 175 in the width direction of the trough 130 (that is, the distance from the inner surface of the fixed part 173 to the tip 177 of the lower part 175) is larger than the insertion amount of the perforated plate member 160 into the support part 171. It's also big. The width of the space between the upper part 174 and the lower part 175 is indicated by the symbol "W1" in FIG. The insertion amount of the perforated plate member 160 into the support portion 171 is indicated by the symbol “I1” in FIG. The width of the space 179 described above is expressed by the difference value between the width of the space between the upper portion 174 and the lower portion 175 and the amount of insertion of the perforated plate member 160 into the support portion 171 (ie, W1−I1). The perforated plate member 160 is allowed to be displaced toward the weir plate 135 by the width of the space 179.

Insertion holes 178 are formed in the upper part 174 and the lower part 175 so as to face the above-mentioned space 179. A stopper 180 is inserted into the insertion hole 178 to prevent the porous plate member 160 from moving in the width direction from a holding position where both ends 163 and 166 of the porous plate member 160 are held by the supports 171 and 172. That is, the stopper 180 is arranged so that the perforated plate member 160 remains in the holding position within the space between the upper part 174 and the lower part 175. The stopper 180 is configured to be detachable from the support portion 171. When the stopper 180 is attached to the support portion 171, movement of the perforated plate member 160 toward the weir plate 135 side is prevented. On the other hand, when the stopper 180 is removed from the support portion 171, the perforated plate member 160 is allowed to move from the holding position toward the weir plate 135 side. A bolt or a pin can be suitably used as the stopper 180. The head (upper end) of the stopper 180 is exposed on the upper surface of the upper portion 174.

As shown in FIG. 8, the support portion 172 includes a plurality of rail members 201 fixed to the weir plate 134 in alignment with the formation positions of the notches 164 of the perforated plate member 160. Each of these rail members 201 is configured such that an end 166 of the perforated plate member 160 opposite to the round bar-shaped end 163 is inserted into the support portion 172 in the width direction of the trough 130. Specifically, the plurality of rail members 201 are arranged at intervals in the alignment direction of the heat exchanger tubes 116 in accordance with the formation positions of the notches 164.

The rail member 201 and the notch 164 have the same length in the alignment direction of the heat exchanger tubes 116. The amount of protrusion of the support portion 172 from the weir plate 134 is set to a value greater than the depth of the notch 164.

The rail member 201 has a fixed part 181, an upper part 182, and a lower part 183. The fixing portion 181 is fixed to the inner surface of the weir plate 134 and is configured to restrict displacement of the perforated plate member 160 in the width direction. Specifically, the width of the fixed portion 181 is set such that the distance from the inner surface of the fixed portion 181 to the contact position of the stopper 180 and the end portion 163 approximately matches the distance from the notch edge 165 to the end portion 163. . Preferably, the relationship between these distances is set such that when the perforated plate member 160 is inserted into the support section 172, the inner surface of the fixing section 181 comes into contact with the notch edge 165. In this case, rattling of the perforated plate member 160 is prevented.

The lower portion 183 protrudes from the lower end of the fixed portion 181 in the direction away from the weir plate 134 and is configured to support the perforated plate member 160 so that the perforated plate member 160 is in a substantially horizontal position. In detail, the height position of the upper surface of the lower part 183 approximately corresponds to the height position of the contact portion of the tip part 177 of the lower part 175 of the support part 171 and the perforated plate member 160.

The upper portion 182 is located upwardly apart from the lower portion 183 and protrudes from the upper end of the fixing portion 181 in the direction away from the weir plate 134 . The distance between the upper surface of the lower part 183 and the lower surface of the upper part 182 substantially matches the thickness of the plate part 161.

It is permissible to insert the perforated plate member 160 into the support part 172 by a length corresponding to the protruding length of the upper part 182 and the lower part 183 from the inner surface of the fixed part 181. The protrusion length of the perforated plate member 160 with respect to the support portion 172 is represented by the symbol "I2" in FIG. The protrusion length I2 is smaller than the width (ie, W1-I1) of the space 179 formed on the weir plate 135 side with respect to the end 163 of the perforated plate member 160. The width of the perforated plate member 160 in the width direction of the trough 130 is larger than the distance between the tips of the supporting parts 171 and 172.

To facilitate the removal operation of removing the perforated plate member 160 from the supports 172 and 171, the trough 130 has a handle 184 (see FIG. 3). The handle 184 is attached to the plate portion 161 of the perforated plate member 160.

The operation of vaporizer 100 will be described below.

The liquefied gas flows into the lower header pipes 114 of each of the plurality of heat transfer panels 113 via the lower manifold 111 by a pump (not shown). The liquefied gas that has entered the lower header pipe 114 flows upward along the plurality of heat transfer tubes 116. During this time, the liquefied gas exchanges heat with the heating liquid and becomes a vaporized gas. The vaporized gas flows upward into the upper header pipe 115 . Thereafter, the vaporized gas flows through the upper header pipe 115 and is concentrated in the upper manifold 112.

The heating liquid is distributed by a pump 121 through a manifold 122 to a plurality of supply tubes 123 . The heating liquid that has flowed through the supply pipe 123 flows into a plurality of troughs 130 . The heating liquid that has flowed into the trough 130 forms a liquid layer within the internal space of the box body 131. When the amount of heating liquid flowing into the box 131 exceeds the volume of the box 131, the heating liquid overflows over the upper edges of the weir plates 134 and 135. The heating liquid then flows down along the inclined surface of the guide section 139. As a result, the heating liquid is sprayed onto the outer surfaces of the upper portions of the plurality of heat transfer tubes 116 located next to the box body 131.

The pressure of the heating liquid that has flowed into the box 131 may locally increase. For example, when the pressure of the heating liquid increases near the inlet 138, a strong upward flow may occur near the side plate 136. Alternatively, the heating liquid may impinge on the side plate 137 opposite the inlet 138, resulting in a strong upward flow. In order to weaken these upward flows, a perforated plate member 160 is placed at a higher position than the inlet 138. Specifically, the upward flow impinges on the perforated plate member 160, thereby weakening the upward flow. As a result, the rise and undulation of the liquid level within the trough 130 is suppressed.

When the upward flow of heating liquid impinges on the perforated plate member 160, the perforated plate member 160 is subjected to an upward force. At this time, since the upper portions 174 and 182 of the support portions 171 and 172 are in contact with the upper surface of the perforated plate member 160, lifting of the perforated plate member 160 is restricted.

By forming a large number of through holes in the perforated plate member 160, the heating liquid can pass through the perforated plate member 160 and overflow over the upper edge of the weir plate 135 and/or the weir plate 134. . On the other hand, when some of the through-holes are clogged, the flow rate of the heating liquid passing through the through-holes that are not clogged increases, and the bulges and undulations of the liquid surface become large. In this case, it is necessary to remove the perforated plate member 160 and eliminate the clogging.

When some of the perforated plate members 160 are clogged, it is necessary to remove and clean the clogged perforated plate members 160. The perforated plate member 160 and the supports 171, 172 are configured to allow only the perforated plate member 160 to be removed. The removal operation of the perforated plate member 160 will be explained with reference to FIGS. 7 to 10. 9 and 10 are schematic cross-sectional views of the perforated plate member 160 in the width direction.

Since the box body 131 is open upward and the head of the stopper 180 is exposed on the upper part 174 of the support part 171, the operator can move the stopper 180 upward and remove it. Thereafter, the operator can hold the handle 184 and move the perforated plate member 160 to be moved (that is, to be removed) toward the weir plate 135 (see FIG. 9). The perforated plate member 160 can be moved until the end 163 of the perforated plate member 160 hits the fixed part 173. The position where the perforated plate member 160 comes out of the support portion 172 is the "movement position", and the direction in which the perforated plate member 160 moves toward this movement position is the "movement direction". The support part 172 is on the opposite side to the moving direction, and the supporting part 171 is on the moving direction side. The end 163 is the end on the moving direction side. The end 166 is the end opposite to the direction of movement.

As described above, the width of the space 179 (ie, W1-I1) is larger than the protrusion length I2 of the perforated plate member 160 with respect to the support portion 172. Therefore, when the perforated plate member 160 hits the fixed part 173, the notch edge 165 is outside the support part 172, so the perforated plate member 160 is held only by the support part 171 on the weir plate 135 side. In this state, while moving the end portion 163 toward the weir plate 134 side, the operator uses the diagonally upper opening 169 of the support portion 171 to move the perforated plate member 160 upward using the end portion 163 as a shaft. It can be rotated (see Figure 10). At this time, by rotating the porous plate member 160 while moving the porous plate member 160 toward the weir plate 134 side, the end portion 163 can be extracted from the support portion 171 through the opening 169 of the support portion 171.

When the perforated plate member 160 is removed from the trough 130, the area to which the perforated plate member 160 was attached is left open. An operator may clean the interior of trough 130 through this open area.

Regarding the above-mentioned removal operation, although the perforated plate member 160 to be removed is displaced in the width direction and the vertical direction, it is not displaced in the alignment direction of the heat exchanger tubes 116. Therefore, the operator can remove the perforated plate member 160 to be removed without moving the adjacent perforated plate member 160 in the direction in which the heat exchanger tubes 116 are aligned.

Regarding the embodiments described above, the supports 171 and 172 are attached to the weir plates 135 and 134. Alternatively, in the case where a pair of rectifying plates arranged at intervals in the width direction are erected in the trough 130, the supports 171 and 172 may be attached to these rectifying plates. . That is, the upright plates to which the support parts 171 and 172 are attached are not limited to the weir plates 134 and 135, but may be plate-shaped members erected within the trough 130.

Regarding the embodiment described above, the cutout edge 165 of the perforated plate member 160 is in contact with the inner surface of the fixing part 181 of the support part 172 when the perforated plate member 160 is held by the supports 171 and 172. However, if the notch 164 of the perforated plate member 160 is formed deeper than the design value, displacement of the perforated plate member 160 toward the weir plate 134 side is allowed. In such a case, the tip 177 of the support portion 171 is curved upward closer to the weir plate 134 than the bulge 167 on the lower side of the end 163; 177, and the displacement of the perforated plate member 160 toward the weir plate 134 side is suppressed.

Regarding the embodiments described above, the perforated plate member 160 is arranged to suppress bulges and undulations of the liquid level. Additionally, perforated plate member 160 may be utilized to provide operator access to the upper portion of trough 130 (eg, upper header tube 115). In this case, the perforated plate member 160 and the supporting parts 171, 172 are designed to have sufficient strength to support the weight of the operator.

Regarding the above-described embodiment, the support portion 171 is attached to the weir plate 135 so as to open obliquely upward. Alternatively, the support portion 171 may be attached to the weir plate 135 so as to open diagonally downward. In this case, the support part 171 is attached to the weir plate 135 in an upside-down orientation to the support part 171 shown in FIG. 7 .

Regarding the embodiments described above, the plurality of perforated plate members 160 partition the interior space of the trough 130 into upper and lower sections as a whole. Alternatively, the plurality of perforated plate members 160 may be arranged so as to partition off a part of the internal space of the trough 130. For example, if it is known that a rise in the liquid level occurs only near the inlet 138, a plurality of perforated plate members 160 are arranged on the side plate 136 side, as shown in FIG. An open area may be formed nearby. In this case, the support portion 171 does not need to extend over the entire length of the trough 130, but rather over the length of the arrangement area of the perforated plate member 160 (the length in the alignment direction of the heat exchanger tubes 116). That's fine.

Regarding the above-described embodiment, the trough 130 has a single partition structure consisting of a plurality of perforated plate members 160 aligned in the alignment direction of the heat exchanger tubes 116. Alternatively, the trough 130 may have a double or more partition structure in order to enhance the effect of suppressing the rise and undulation of the liquid level. A schematic cross-sectional view of a trough 130 with a double partition structure is shown in FIG. Referring to FIG. 12, a trough 130 having a double partition structure will be described.

Two supports 171 and two supports 172 are shown in FIG. 12 . These support parts 171 are fixed to the weir plate 135 at positions spaced apart from each other in the vertical direction. The two support parts 172 are fixed to the weir plate 134 at positions spaced apart from each other in the vertical direction.

In FIG. 12, two perforated plate members 160 are shown. One of these perforated plate members 160 is held in a substantially horizontal position by a lower support part 171 and a lower support part 172. The other perforated plate member 160 is held in a substantially horizontal position by an upper support portion 171 and an upper support portion 172.

The stopper 180 is shared by the upper and lower supports 171. However, the present invention is not limited to this, and as shown in FIG. 13, the stopper 180 may be provided on each of the upper and lower support sections 171. In this case, the upper and lower support parts 171 and 172 may be arranged on opposite sides.

Regarding the insertion hole 178 of the lower support part 171, the formation position of the insertion hole 178 in the alignment direction of the heat exchanger tubes 116 is set so as not to overlap with the upper support part 172. Therefore, the operator can access the stopper 180 attached to the lower support part 171 without being obstructed by the support part 172.

Regarding the embodiments described above, the inlet 138 is provided in the peripheral wall 133. Alternatively, the inlet 138 may be provided in the bottom plate 132.

<Second embodiment>
Regarding the embodiments described above, the perforated plate member 160 pivots upward about the end 163. When the parts for the vaporizer 100 are arranged in a substantially fan-shaped area centered on the end portion 163, the rotation of the perforated plate member 160 is blocked by the parts for the vaporizer 100. Therefore, it is preferable that the components for the vaporizer 100 are located at a large distance upwardly from the trough 130. In this case, the height of the vaporizer 100 increases. A trough 130 having a structure that solves this problem is shown in FIGS. 14 and 15. A trough 130 of a second embodiment will be described with reference to FIGS. 14 and 15.

The trough 130 of the second embodiment differs from the trough 130 of the first embodiment only in that the perforated plate member 160 is configured to be foldable. The perforated plate member 160 has perforated plates 191 and 192 arranged in the width direction. The porous plate 191 is arranged on the weir plate 135 side. The porous plate 192 is arranged on the weir plate 134 side. The perforated plate 191 on the weir plate 135 side has a plate portion 161 and an end portion 163, while the perforated plate 192 on the weir plate 134 side is composed of only the plate portion 161.

The perforated plates 191 and 192 are connected by a hinge 193 attached to the lower surface of the perforated plates 191 and 192. The hinge 193 allows the perforated plate member 160 to be bent upward, but does not allow it to be bent downward.

In order to prevent the perforated plate member 160 from bending due to the pressure received from the heating liquid, a bend prevention portion 194 is attached to the upper surface of the perforated plate member 160. Specifically, the bending prevention part 194 is a plate member attached to the upper surface of the perforated plates 191, 192 across the boundary between the perforated plates 191, 192. The bend prevention portion 194 is screwed to the perforated plates 191 and 192 using the holes in the perforated plates 191 and 192. Therefore, the bend prevention portion 194 can be removed during the removal work of the perforated plate member 160.

The handle 184 is attached to the perforated plate member 160 so as not to straddle the boundary between the perforated plates 191 and 192. Specifically, the handle 184 is attached to the upper surface of the perforated plate 192.

When the perforated plate member 160 is removed, not only the stopper 180 is removed, but also the bend prevention part 194 is removed from the boundary between the perforated plates 191 and 192. At this time, since the hinge 193 does not allow the perforated plate member 160 to bend downward, the operator may step on the perforated plate member 160 when removing the bending prevention part 194. After the bending prevention part 194 is removed, the perforated plate member 160 is displaced toward the weir plate 135 (see FIG. 16).

Thereafter, the operator grasps the handle 184 and rotates the perforated plate member 160 upward while displacing the end portion 163 toward the weir plate 134 side. At this time, the perforated plate 192 is rotated downward around the hinge 193, and is placed in a position inclined downward from the tip of the perforated plate 191. Because the perforated plate 192 is tilted downwardly, a large area does not need to be formed above the trough 130 for removal of the perforated plate member 160 (see FIG. 17).

Regarding this embodiment, a plurality of perforated plate members 160 partition the interior space of the box 131 into upper and lower sections as a whole. Alternatively, if the location where the liquid level becomes large is known, the perforated plate member 160 may be placed only at the location where the liquid level becomes large (see FIG. 11).

Regarding this embodiment, the trough 130 has a single partition structure. Alternatively, a perforated plate member 160 may be additionally provided above or below the plurality of perforated plate members 160 (see FIGS. 12 and 13).

<Third embodiment>
When eliminating clogging of the perforated plate member 160, it is necessary to separate the perforated plate member 160 from the trough 130, but when an operator enters the trough 130 and performs work, the perforated plate member 160 is placed It is only necessary that the inside of the trough 130 is opened in the area where the trough 130 was previously opened. In this case, separation of perforated plate member 160 from trough 130 is not required. A structure that makes it possible to open the interior of the trough 130 in the area where the perforated plate member 160 was located without requiring separation of the perforated plate member 160 from the trough 130 is described with reference to FIGS. 18 and 19. be done. FIG. 18 is a schematic plan view of the trough 130. FIG. 19 is a schematic longitudinal cross-sectional view of the trough 130.

The support portion 171 of the trough 130 of the third embodiment does not support the plurality of perforated plate members 160 over the entire length of the trough 130, but supports the perforated plate members 160 at intervals in the alignment direction of the heat exchanger tubes 116. It includes a plurality of support pieces 190, each of which is configured to do so. Two support pieces 190 are arranged corresponding to one perforated plate member 160. The support piece 190 is configured using a hook-shaped member instead of a rail member.

The support piece 190 includes a fixed portion 173 fixed to the inner surface of the weir plate 135 and a substantially J-shaped extension portion formed integrally with the fixed portion 173. The J-shaped extension portion includes an upper portion 174, a connecting portion 212, and a lower portion 175. The connecting portion 212 is a portion extending in the vertical direction while being curved in a substantially U-shape so as to be convex toward the weir plate 134 side. The upper portion 174 is a portion extending substantially horizontally from the upper end of the connecting portion 212 toward the weir plate 135. An insertion hole 178 through which a stopper 180 is inserted is formed in the upper portion 174 . The lower portion 175 is a portion extending substantially horizontally from the lower end of the connecting portion 212 toward the weir plate 135. The lower part 175 terminates at a position spaced apart from the fixing part 173 toward the weir plate 134, and has an opening 169 formed therein. The opening 169 between the lower part 175 and the fixed part 173 is used for fitting the end part 163 of the perforated plate member 160 into the supporting part 171 and removing it. Therefore, the width of the opening 169 is set to be larger than the diameter of the end 163.

The arrangement height of the support part 171 is such that when the perforated plate member 160 is rotated approximately 90 degrees downward around the end part 163 with the end part 163 fitted into the support part 171, the end of the perforated plate member 160 is The portion 166 is set so as not to contact the upper surface of the bottom plate 132 of the box body 131. That is, the depth of the box 131 from the support portion 171 (that is, the distance from the support portion 171 to the bottom plate 132) is greater than the width of the perforated plate member 160.

Two openings 214 are formed in the perforated plate member 160 at positions spaced apart from each other in the longitudinal direction of the trough 130. The above-mentioned support pieces 190 are arranged at positions corresponding to these openings 214 in the longitudinal direction of the trough 130, respectively.

The opening 214 is adjacent to the end 163 and is formed by the end 163 into a closed space. The end portion 163 of the perforated plate member 160 is fitted into the support portion 171 through the space between the lower portion 175 of the support portion 171 and the fixed portion 173. At this time, the end portion 163 is sandwiched between the upper portion 174 and the lower portion 175, and the connecting portion 212 of the support portion 171 is inserted into the opening portion 214.

The opening 214 is formed so that when the perforated plate member 160 is inserted into the support 172, there is a space on the weir plate 134 side with respect to the connecting portion 212 of the support 171. The distance between the end of the opening 214 on the weir plate 134 side and the connecting portion 212 is set to a value larger than the protrusion length I2 of the perforated plate member 160 with respect to the support portion 172.

Since the width of the perforated plate member 160 is smaller than the distance between the inner surfaces of the weir plates 134 and 135, a gap is formed between the end 163 of the perforated plate member 160 and the inner surface of the weir plate 135. The width of this gap is also set to a value larger than the protrusion length I2 of the perforated plate member 160 with respect to the support portion 172.

The gap between the end 163 of the perforated plate member 160 and the inner surface of the weir plate 135 is closed by a plurality of closing members 215 disposed below the perforated plate member 160. These closing members 215 are arranged at intervals in the longitudinal direction of the trough 130 and extend in the alignment direction of the heat exchanger tubes 116 next to the support portion 171. A support portion 171 is fixed to the inner surface of the weir plate 135 between adjacent closing members 215.

The closing member 215 can be configured using a rod-shaped member having an L-shaped cross section. The closing member 215 includes a contact plate 216 that is in contact with the inner surface of the weir plate 135, and a horizontal plate that is bent at a substantially right angle from the contact plate 216 and extends in a substantially horizontal position in the alignment direction of the heat exchanger tubes 116. 217. The contact plate 216 is screwed to the weir plate 135, for example.

The operation of opening the interior of the trough 130 in the area where the perforated plate member 160 was located will now be described. First, the stopper 180 is removed, and then the perforated plate member 160 is displaced from the holding position toward the weir plate 135 (see FIG. 20). The width of the gap on the weir plate 134 side with respect to the connecting portion 212 and the width of the gap between the end 163 of the perforated plate member 160 and the inner surface of the weir plate 135 are both larger than the protrusion length I2, so the operator can The perforated plate member 160 can be displaced by a displacement amount larger than the length I2. Therefore, the operator can displace the perforated plate member 160 toward the weir plate 135 and remove the perforated plate member 160 from the support portion 172. At this time, the end 163 is above the opening 169 of the support piece 190 (movement position).

Thereafter, the operator rotates the perforated plate member 160 downward around the end 163 and displaces the end 163 toward the weir plate 134 (see FIG. 21). As a result, end portion 163 enters the space between upper portion 174 and lower portion 175. At this time, the end portion 166 of the perforated plate member 160 is spaced apart from the bottom plate 132, and the perforated plate member 160 is suspended from the support portion 171 in a substantially vertical posture. As a result, the interior of the trough 130 is opened in the area that was blocked by the perforated plate member 160. A worker can perform a predetermined task (for example, cleaning) through this open portion. That is, the operator can perform desired work within the trough 130 while the perforated plate member 160 is attached to the trough 130.

If it is necessary to remove the perforated plate member 160, the operator removes the closing member 215. Thereafter, the operator can displace the end portion 163 toward the weir plate 135 side and remove the end portion 163 from the support portion 171 through the opening 169 between the lower portion 175 and the fixed portion 173.

Regarding the embodiments described above, the support portion 171 is open downward. Alternatively, the support portion 171 may be open upward (see FIG. 22). The support portion 171 shown in FIG. 22 is configured such that a lower portion 175 extends from the inner surface of the weir plate 135 toward the weir plate 134 side. A screw hole (not shown) is formed in the lower part 175, into which the body of a bolt used as a stopper 180 is inserted. The connecting portion 212 curves upward from the tip of the lower portion 175, and the upper portion 174 extends a predetermined distance from the upper end of the connecting portion 212 toward the weir plate 135. The upper portion 174 terminates at a position spaced apart from the fixed portion 173 toward the weir plate 134 side. Therefore, an opening 169 for removing the end portion 163 is formed on the weir plate 135 side of the upper portion 174.

A bolt used as the stopper 180 is screwed into a screw hole formed in the lower part 175. At this time, the perforated plate member 160 is positioned in the width direction by the head of the bolt.

When opening the area where the perforated plate member 160 was placed, the operator removes the stopper 180 and displaces the perforated plate member 160 toward the weir plate 135 side. Thereafter, the perforated plate member 160 is rotated upward about the end portion 163. The perforated plate member 160 is rotated until it assumes a position in which it leans against the portion of the weir plate 135 above the support portion 171. As a result, even if the operator does not hold the perforated plate member 160, the open state of the area where the perforated plate member 160 was placed is maintained.

If it is necessary to remove the perforated plate member 160, the operator may place the perforated plate member 160 in a substantially vertical position and then pull out the end portion 163 through the space between the upper portion 174 and the fixing portion 173. At this time, the operator does not need to remove the closing member 215.

Regarding this embodiment, one of the upper part 174 and lower part 175 of the support piece 190 is spaced apart from the fixing part 173, allowing the perforated plate member 160 to be removed. Alternatively, the support piece 190 has a structure in which the upper part 174 and the lower part 175 are both connected to the fixed part 173 (i.e., a structure in which the connecting part 212, the upper part 174, the lower part 175, and the fixed part 173 form a closed space). You may do so. In this case, although removal of the perforated plate member 160 from the support piece 190 is not permitted, vertical rotation of the perforated plate member 160 is permitted. By rotating the perforated plate member 160 upward or downward, the inside of the trough 130 can be opened in the region where the perforated plate member 160 is arranged.

Regarding this embodiment, opening 214 is a closed space. Alternatively, as shown in FIG. 23, the opening 214 may be formed as a cutout that opens toward the end 163.

Regarding this embodiment, a plurality of perforated plate members 160 partition the internal space of the box 131 into upper and lower sections as a whole. Alternatively, if the location where the liquid level becomes large is known, the perforated plate member 160 may be placed only at the location where the liquid level becomes large (see FIG. 11).

Regarding this embodiment, the trough 130 has a single partition structure. Alternatively, a perforated plate member 160 may be additionally provided above or below the plurality of perforated plate members 160 (see FIGS. 12 and 13).

Regarding this embodiment, the perforated plate member 160 does not have a folded structure. Alternatively, the perforated plate member 160 may have a folded structure (see second embodiment).

The techniques described in connection with the above embodiments are suitably used in various technical fields where a phase change from liquefied gas to vaporized gas is required.

100......... Vaporizer 116... Heat exchanger tube 130... ...Trough 132...Bottom plate 134, 135...Weir board (vertical board)
160...... Porous plate member 163... End portion 167... ...Bulging parts 171, 172... Support part 174... Upper part 175... ...Lower part 180...Stopper 190...Support pieces 191, 192... ...... Porous plate 193 ...... Hinge 194 ...... Bending prevention part 212 ... ......Connection section 214......Opening section

Claims (11)

A trough for an open rack type vaporizer configured to vaporize liquefied gas flowing within a plurality of heat transfer tubes arranged in an upright position,
a pair of vertical plates that are long in the direction in which the plurality of heat exchanger tubes are aligned and spaced apart in the width direction of the trough;
a plurality of perforated plate members arranged horizontally in the alignment direction so as to partition the internal space of the trough into upper and lower sections between the pair of upright plates, and suppressing undulating or bulging of the liquid level in the trough ;
a pair of support parts provided on the pair of vertical plates so as to support the plurality of perforated plate members at a predetermined height position while suppressing floating of the plurality of perforated plate members by the heating liquid; ,
The pair of support parts are configured to support the plurality of perforated plate members while allowing the plurality of perforated plate members to be individually moved so as to open the internal space of the trough . ,trough. A trough for an open rack type vaporizer configured to vaporize liquefied gas flowing within a plurality of heat transfer tubes arranged in an upright position,
a pair of vertical plates that are long in the direction in which the plurality of heat exchanger tubes are aligned and spaced apart in the width direction of the trough;
a plurality of perforated plate members arranged in the alignment direction between the pair of vertical plates and having a width narrower than the width of the internal space of the trough;
a pair of support parts provided on the pair of upright plates to support the plurality of perforated plate members while suppressing floating of the plurality of perforated plate members by the heating liquid;
The pair of supporting parts prevents the perforated plate members to be moved from a holding position vertically sandwiching both ends of each of the plurality of perforated plate members in the width direction to a moving position where the perforated plate members to be moved are individually moved in the width direction. configured to allow
The supporting portion on the opposite side to the moving direction of the perforated plate member to be moved toward the moving position is configured to prevent the perforated plate member to be moved from coming out when the perforated plate member to be moved moves to the moving position. configured to allow
The supporting part on the moving direction side is configured to allow the perforated plate member in the moving position to be rotated up and down, and also to move the perforated plate member after the rotation in the alignment direction. trough, configured to permit removal without removal. Each of the plurality of perforated plate members further includes a stopper that prevents movement of each of the plurality of perforated plate members in the moving direction before the plurality of perforated plate members come out from the supporting portion on the opposite side,
The trough according to claim 2, wherein the stopper is removable from the support portion on the moving direction side. The supporting part on the moving direction side has an upper part protruding in the width direction from the standing plate on the moving direction side, and the supporting part is arranged so as to sandwich the ends of the plurality of perforated plate members on the moving direction side together with the upper part. a lower part protruding in the width direction from the standing board on the direction side,
The trough according to claim 2 or 3, wherein the amount of protrusion of the lower portion is different from the amount of protrusion of the upper portion. The end portions of the plurality of perforated plate members have a bulging portion that bulges upward or downward,
The supporting portion on the moving direction side is configured to engage with the bulging portion when the plurality of perforated plate members move in a direction opposite to the moving direction. trough. Each of the plurality of perforated plate members has an opening adjacent to an end on the moving direction side,
The support part on the moving direction side includes a plurality of support pieces arranged corresponding to the positions of each of the plurality of perforated plate members,
Each of the plurality of support pieces is inserted into the opening so as to connect the upper part located above the corresponding perforated plate member, the lower part located below this perforated plate member, and the upper part and the lower part. It has a connecting part;
Each of the plurality of support pieces allows the end of the corresponding perforated plate member on the moving direction side to move in the moving direction within a space between the upper part, the lower part, and the connecting part. The trough according to claim 2 or 3, wherein the corresponding perforated plate member is allowed to rotate around the end portion on the moving direction side. The opening is formed as a closed space,
The trough according to claim 6, wherein one of the upper and lower parts is configured to allow the end of the corresponding perforated plate member on the moving direction side to be extracted from the space. The trough according to claim 6 or 7, wherein the pair of support parts are arranged at a height that does not contact the bottom plate of the trough when the perforated plate member to be moved is rotated downward. Each of the plurality of perforated plate members includes a pair of perforated plates arranged in the width direction, and a hinge connecting the pair of perforated plates that allows bending of each of the plurality of perforated plate members. , trough according to any one of claims 1 to 8. Further comprising a removable bending prevention part on each of the plurality of perforated plate members,
10. The trough according to claim 9, wherein the bending prevention part is configured to prevent the bending when attached to a corresponding perforated plate member. The trough according to any one of claims 1 to 10,
an open rack type heat transfer panel having the plurality of heat transfer tubes configured such that the liquefied gas flows inside and the heating liquid overflowing from the trough flows on the outer surface. vaporizer.

Images