JP5989486B2 - Sampling device - Google Patents

Description

  The present invention relates to a sampling device for sampling a fluid such as a gas, and more particularly to a sampling device that can be suitably used when sampling gas from the inside of a gasification furnace, an incinerator or the like.

  Conventionally, as a method of sampling gas from an arbitrary position in the furnace of a gasification furnace or incinerator, a communication hole communicating with the inside and outside of the furnace is formed in the furnace wall, and a sampling tube is inserted into the formed communication hole, A method of sampling a gas from a desired position in a furnace by moving (traversing) an inserted sampling tube in an axial direction is known.

  Here, when sampling the gas in the furnace by inserting the sampling pipe into the communication hole, it is necessary to insert the sampling pipe in an airtight manner into the communication hole so that the gas in the furnace does not leak.

Therefore, as a sampling device that can sample gas from any position in the furnace while preventing gas leakage from the furnace, a cylindrical metal fitting with one end fixed to a communication hole formed in the furnace wall, and a cylindrical shape A hollow disc-shaped flange attached to the other end of the metal fitting, an O-ring or packing arranged at the connection between the cylindrical metal fitting and the flange to prevent gas leakage from the inside of the furnace to the outside of the furnace, a flange, a cylindrical shape A sampling device including a metal fitting and a sampling tube inserted through a communication hole has been proposed (see, for example, Patent Document 1).
And according to the above-mentioned conventional sampling device which has an O ring or packing in the connection part of a cylindrical metal fitting and a flange, by arranging an O ring or packing so that a sampling tube may be contacted, gas from the inside of a furnace The gas can be sampled from a desired position in the furnace by moving the sampling tube in the axial direction while preventing leakage.

JP-A-9-281013

However, in the above conventional sampling apparatus using an O-ring or packing, it is necessary to move the sampling tube in the axial direction with the O-ring or packing attached. It was difficult to achieve both of these properties. That is, in the above conventional sampling device, when the contact pressure between the O-ring or packing and the sampling tube is increased to improve the gas sealing performance, the sliding resistance of the sampling tube increases and the insertion / extraction property of the sampling tube decreases. On the contrary, if the contact pressure between the O-ring or packing and the collection tube is lowered to improve the insertion / extraction property of the collection tube, there is a problem that the gas sealing performance is lowered.
In addition, since the sampling tube is not fixed in the above conventional sampling device, there is a problem that when a person or an object contacts the sampling tube during sampling, the sampling tube moves and the sampling position shifts from a desired position. there were.

  Therefore, the present invention is a sampling device that samples a fluid such as a gas from a desired position by moving a sampling tube inserted therein in an axial direction, and is excellent in fluid sealing performance and sampling tube insertion / extraction properties, and An object of the present invention is to provide a sampling device that can reliably sample a fluid from a desired position.

An object of the present invention is to advantageously solve the above-described problem, and a sampling device according to the present invention is a sampling device that samples a fluid from a sampling space using a sampling tube, and one end of the sampling device is A cylindrical body member connected to the sampling space, a cylindrical pushing member inserted into the body member from the other end side of the body member, the body member and the pushing member arranged coaxially; And a gland packing disposed between the inner peripheral surface of the main body member and the outer peripheral surface of the sampling tube, and the main body member accommodates the gland packing. Part, a gland packing support part that is provided on the one end side with respect to the gland packing accommodating part and supports the gland packing, and the gland packing accommodating part A female screw part formed on the other end side, the push-in member has a male screw part screwed into the female screw part, and the gland packing is connected to the gland packing support part side. The position of the sampling tube is fixed by compressing and deforming the gland packing after the sampling tube is positioned, so that the position of the sampling tube is not shifted during sampling . It is characterized by that.
As described above, the gland packing is arranged in the main body member, and after positioning the sampling tube, the gland packing is pressed against the gland packing support portion side by screwing with the female screw portion of the main body member to compress and deform the gland packing. the position of the sampling tube is fixed Te, by providing the pushing member you do not shift the position of the sampling tube during sampling, sandwiched gland packing in a gland packing support and pusher member of the body member, the body member It is possible to prevent fluid from leaking out. In addition, if the gland packing disposed between the inner peripheral surface of the main body member and the outer peripheral surface of the sampling tube is sandwiched between the gland packing support portion and the pushing member, the sampling tube is caused by the contact pressure between the gland packing and the sampling tube. Can be fixed in a desired position. Furthermore, if the gland packing is pressed by screwing the male thread portion of the pushing member and the female screw portion of the main body member, the gland can be adjusted by adjusting the degree of screwing between the pushing member and the main body member. The contact pressure between the packing and the sampling tube can be adjusted. Therefore, until the screwing between the pushing member and the main body member is completed until the screwing between the pushing member and the main body member is completed, and the screwing between the pushing member and the main body member is completed, the sampling pipe is set in a desired state. Can be fixed in position.
In the present invention, the “cylindrical member” includes a substantially cylindrical member whose diameter changes along the axial direction in addition to the cylindrical member having the same diameter along the axial direction.

  Here, in the sampling device of the present invention, it is preferable that the main body member has a reduced diameter portion having an inner diameter smaller than that of the gland packing housing portion on the other end side of the gland packing housing portion. If the reduced diameter portion is provided, the gland packing can be placed in contact with the reduced diameter portion when the gland packing is arranged in the main body member, so that the arrangement of the gland packing in the main body member is facilitated. Because.

  In the sampling apparatus of the present invention, it is preferable that the sampling tube has a double tube structure of a protective tube and a glass tube disposed on the inner peripheral surface side of the protective tube. If the sampling tube has a double tube structure consisting of a protection tube and a glass tube arranged on the inner peripheral surface of the protection tube, the strength of the sampling tube is secured by the protection tube, and the sampling tube is It is because it can suppress that the property of the fluid which contacted the inner peripheral surface changes.

  Furthermore, in the sampling device of the present invention, it is preferable that a cushion material is disposed between the protective tube and the glass tube. This is because if the cushion material is arranged, it is possible to prevent the glass tube from moving inside the protective tube even when the double tube structure is adopted.

  In the sampling device of the present invention, it is preferable that the sampling tube has a handle on the other end side opposite to the one end side inserted into the sampling space. This is because if the handle is provided on the collection tube, the operability when inserting and removing the collection tube is improved.

  According to the sampling device of the present invention, the fluid can be reliably sampled from a desired position while ensuring the fluid sealing property and the sampling tube insertion / extraction property.

It is sectional drawing which shows the structure of the typical sampling apparatus according to this invention in the state attached to the furnace wall. It is sectional drawing which shows the structure of each member of the sampling apparatus shown in FIG. 1, (a) shows a main body member, (b) shows a pushing member, (c) shows a collection tube. (A)-(c) is explanatory drawing explaining the process in which the sampling apparatus shown in FIG. 1 is attached to a furnace wall. It is sectional drawing which shows the structure of the modification of the sampling device of this invention in the state attached to the furnace wall.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
The sampling device of the present invention is not particularly limited, and is used when sampling a gas as a fluid from a furnace (a space to be sampled) such as a gasification furnace or an incinerator. In the following, a case where gas as a fluid is sampled from the gasification furnace as a sampling space will be described using an example of the sampling apparatus of the present invention. In the present invention, the sampling space is an arbitrary space. And the fluid may be a liquid.

  Here, FIG. 1 shows a state in which an example of the sampling apparatus of the present invention is attached to the furnace wall of the gasification furnace. The gasification furnace is not particularly limited, and waste such as waste wood and municipal waste is pyrolyzed as combustibles, reducing the volume of the wastes and combustible gas generated during the thermal decomposition of the wastes. It is a fluidized bed type gasification furnace used when recovering and reusing.

  A sampling apparatus 100 shown in FIG. 1 is attached to a furnace wall 200 of a gasification furnace via a valve 220. Specifically, a communication hole 210 that communicates the inside and outside of the furnace is formed in the furnace wall 200 of the gasification furnace, and the sampling device 100 is connected to a tip of the communication hole 210 outside the furnace via a valve 220. It is attached.

The sampling device 100 includes a substantially cylindrical main body member 10 whose one end on the left side in FIG. 1 is connected to a gasification furnace as a sampling space via a valve 220, and the other end side of the main body member 10 (right side in FIG. 1). ) To be inserted into the main body member 10, a substantially cylindrical main body member 10 disposed coaxially with each other, and a sampling tube 60 inserted through the substantially cylindrical pressing member 50. It has. A gland packing 40 is disposed in the main body member 10 of the sampling device 100 between the inner peripheral surface of the main body member 10 and the outer peripheral surface of the sampling tube 60.
According to the sampling device 100, the sampling tube 60 is inserted into the gasification furnace through the pushing member 50, the main body member 10, the valve 220 and the communication hole 210, thereby sampling the gas in the gasification furnace. Can do.

  As shown in FIGS. 1 and 2A, the main body member 10 is a substantially cylindrical member whose diameter changes along the axial direction, and the first member 20 connected to the valve 220 and the pushing member 50. It is comprised with the 2nd member 30 in which is inserted. In addition, the 1st member 20 and the 2nd member 30 are airtightly connected by fastening means (not shown), such as a volt | bolt, via known sealing members (not shown), such as packing.

The first member 20 is a substantially cylindrical member and has a flange 21 used for connection with the second member 30. Moreover, as shown to Fig.2 (a), the external thread 23 is formed in the outer peripheral surface of the one end side (left side in Fig.2 (a)) of the 1st member 20. As shown in FIG. The first member 20 and the valve 220 include a male screw 23 of the first member 20 and a female screw (not shown) formed on the inner peripheral surface of the valve 220, and a seal tape (not shown). By being screwed through, the airtight connection is established. Further, as shown in FIGS. 1 and 2A, the other end side (the right side in FIGS. 1 and 2A) of the first member 20 is accommodated in the main body member 10 from the flange 21. A gland packing support portion 22 that restricts the movement of the gland packing 40 toward the first member 20 and supports the gland packing 40 is formed.
The connection between the first member 20 and the valve 220 is not limited to screwing, and may be performed using a known connection method such as flange connection via packing.

  The second member 30 is a cylindrical member, and includes a gland packing accommodating portion 31 that accommodates the gland packing 40 inside, the other end side of the second member 30 (right side in FIGS. 1 and 2A), More specifically, it has a reduced diameter portion 33 formed on the other end side of the gland packing accommodating portion 31. Here, the inner diameter of the reduced diameter portion 33 is smaller than the inner diameter of the gland packing accommodating portion 31, and a step is formed between the gland packing accommodating portion 31 and the reduced diameter portion 33. A female screw 32 is formed on the inner peripheral surface of the reduced diameter portion 33.

  The gland packing 40 is made of a known material that can be compressed and deformed. Here, the gland packing 40 has an outer diameter substantially equal to that of the gland packing accommodating portion 31 of the second member 30, and the reduced diameter portion in which the gland packing support portion 22 of the first member 20 and the female screw 32 are formed. 33 is accommodated in the gland packing accommodating portion 31 between the two. The gland packing 40 has a radial direction (vertical direction in FIGS. 1 and 2A) when receiving a force compressing the gland packing 40 in the thickness direction (horizontal direction in FIGS. 1 and 2A). ) Deforms (enlarges) toward.

  As shown in FIG. 1 and FIG. 2B, the pushing member 50 is a substantially cylindrical member whose outer diameter changes along the axial direction, and one end side of the pushing member 50 (FIG. 1 and FIG. 2B). ), A male screw 51 is formed on the outer peripheral surface of the left side). The male screw 51 is engaged with the female screw 32 formed on the inner peripheral surface of the reduced diameter portion 33 of the second member 30. Further, the other end side (the right side in FIGS. 1 and 2B) of the pushing member 50 has a larger outer diameter than one end side (the side on which the male screw 51 is formed), and the other end side of the pushing member 50. A handle 52 is disposed on the outer peripheral surface of the.

  As shown in FIG. 1 and FIG. 2 (c), the sampling tube 60 is a substantially cylindrical member, and includes a protective tube 61 located outside and a glass tube 62 disposed on the inner peripheral surface side of the protective tube 61. And has a double-pipe structure. And the handle 63 is formed in the other end side (right side in FIG.1 and FIG.2 (c)) of the protection tube 61 on the opposite side to the one end side inserted in a gasification furnace. A cushion material (not shown) is disposed between the protective tube 61 and the glass tube 62. The outer diameter of the sampling tube 60, that is, the outer diameter of the protective tube 61 other than the portion where the handle 63 is formed, is the inner diameter of the communication hole 210, the valve 220, the first member 20, the gland packing 40, and the pushing member 50. The sampling tube 60 is formed to be slidable within the communication hole 210, the valve 220, the first member 20, the gland packing 40, and the pushing member 50.

  Here, the protective tube 61 is for protecting the glass tube 62, and a SUS tube having an inner diameter substantially equal to the outer diameter of the glass tube 62 can be used as the protective tube 61. The protective tube 61 is shorter than the glass tube 62, and a known seal member is provided between the other end of the protective tube 61 (the right end in FIGS. 1 and 2C) and the glass tube 62. Airtightly sealed.

  The glass tube 62 is for sampling the gas from the gasification furnace without changing the gas properties (that is, without reacting with the gas). Examples of the glass tube include a glass tube made of quartz glass. Can be used.

  The cushion material (not shown) is for preventing the glass tube from moving inside the protective tube. Here, as the cushion material, a known cushion material can be used. However, since the inside of the gasification furnace into which the sampling tube 60 is inserted is at a high temperature, a heat insulating material or a heat-resistant material can be used as the cushion material. preferable.

  And the sampling apparatus 100 provided with the main body member 10, the gland packing 40 accommodated in the main body member 10, the pushing member 50, and the collection pipe | tube 60 is the furnace of a gasification furnace, as demonstrated below, for example. Can be attached to the wall.

  Specifically, first, as shown in FIG. 3A, the first member 20 and the second member 30 are hermetically connected in a state where the gland packing 40 is accommodated in the second member 30 of the main body member 10. To do. Here, accommodation of the gland packing 40 in the second member 30 is formed between the gland packing accommodation portion 31 and the reduced diameter portion 33 from one end side (left side in FIGS. 1 to 3) of the second member 30. This can be done easily by inserting the gland packing 40 until it comes into contact with the step. In the sampling device of the present invention, the gland packing 40 may be inserted by abutting the gland packing against the female screw formed on the inner peripheral surface of the second member 30 without forming the reduced diameter portion. However, from the viewpoint of more easily and reliably inserting the gland packing, it is preferable to provide a reduced diameter portion to form a step.

Next, the male screw 51 of the pushing member 50 and the female screw 32 of the second member 30 of the main body member 10 before being connected to the valve 220 are screwed together, and the pushing member 50 is moved to the second member 30 of the main body member 10. Insert inside. The pushing member 50 can be easily inserted by using the handle 52.
Then, before connecting the main body member 10 to the valve 220, the sampling tube 60 is inserted into the pushing member 50 inserted into the second member 30 of the main body member 10.
Here, the sampling tube 60 is inserted into the pushing member 50 and the main body member 10 so as not to protrude from one end side (the left side in FIG. 3A) of the first member 20 of the main body member 10. The pushing member 50 is inserted to the extent that the tip does not press against the gland packing 40. That is, at this stage, the gland packing 40, the pushing member 50 and the sampling tube 60 are temporarily fixed in the main body member 10 without completing the screwing of the pushing member 50 and the second member 30.

  Then, the male screw 23 formed on the outer peripheral surface of the first member 20 and the female screw (not shown) formed on the inner peripheral surface of the valve 220 are screwed together via a seal tape, and FIG. ), The first member 20 is connected to the valve 220 in an airtight manner. In this state, the valve 220 is closed to prevent gas leakage from the gasifier.

Thereafter, the screwing between the pushing member 50 and the second member 30 is loosened, the valve 220 is opened, and the sampling tube 60 is inserted into the communication hole 210 and the gasification furnace.
Here, in a state where the screwing between the pushing member 50 and the second member 30 is loosened, the tip of the pushing member 50 is in light contact with the gland packing 40 (with a low contact pressure). Therefore, the gland packing 40 does not receive a large compressive force in the thickness direction, and is hardly compressed and deformed. Therefore, the sampling tube 60 can be easily moved in the axial direction (left and right in FIGS. 1 to 3).
Therefore, the distal end of the sampling tube 60 is moved to a desired position in the gasification furnace (a position where gas is desired to be sampled) in a state where the screwing between the pushing member 50 and the second member 30 is loosened. Specifically, the sampling tube 60 is traversed, and the tip of the sampling tube 60 is moved to a desired position on an imaginary line passing through the communication hole. The movement of the collection tube 60 can be easily performed by using a handle 63 provided on the collection tube 60.
Incidentally, when the valve 220 is opened, the gas in the furnace flows out of the furnace through the sampling tube 60. Therefore, from the viewpoint of preventing the outflow of gas in the furnace, a leakage prevention tube (on the right side in FIGS. 1 to 3) is connected to the other end of the sampling tube 60 until the positioning of the sampling tube 60 is completed. It is preferable to attach (not shown). Further, the pressure with which the tip of the pushing member 50 abuts against the gland packing 40 can easily traverse the sampling tube 60, and the gland packing 40, the inner peripheral surface of the second member 30, and the sampling tube 60. It is preferable to set the pressure so as to suppress the outflow of gas from between the outer peripheral surface.

  Finally, when the positioning of the sampling tube 60 is completed, as shown in FIG. 3C, the screwing of the pushing member 50 and the second member 30 is completed, and the tip of the pushing member 50 is brought into contact with the gland packing 40. At the same time, the gland packing 40 is pushed toward the gland packing support portion 22 by the pushing member 50. Then, the gland packing 40 is compressed and deformed, and the gap between the other end of the first member 20 (the right end in FIG. 3C) and the sampling tube 60, the inner peripheral surface of the second member 30, and the sampling tube 60. The gap between the outer peripheral surface of the steel plate and the gland packing 40 is hermetically sealed. Then, the gas in the gasifier is prevented from leaking from the gaps between the inner peripheral surface of the communication hole 210, the valve 220 and the first member 20 and the outer peripheral surface of the sampling tube 60.

  According to the sampling device 100 described above, the sampling tube 60 can be easily moved and positioned easily until just before the screwing of the pushing member 50 and the main body member 10 is completed. Therefore, the insertion / extraction property of the collection tube 60 can be sufficiently ensured. Further, according to the sampling device 100, as shown in FIG. 3C, the screwing of the pushing member 50 and the main body member 10 is completed, and the gland packing support portion 22 and the pushing member 50 of the main body member 10 By sandwiching the packing 40, it is possible to prevent the gas from leaking in the main body member 10. Furthermore, according to the sampling device 100, the gland packing 40 is compressed and deformed and comes into strong contact with the outer peripheral surface of the sampling tube 60, so that the position of the sampling tube 60 can be fixed by the gland packing 40. Therefore, it is possible to suppress the position of the sampling tube 60 from being shifted during gas sampling.

  As mentioned above, although the sampling apparatus of this invention was demonstrated using an example, the sampling apparatus of this invention is not limited to the said example, A change can be suitably added to the sampling apparatus of this invention. Specifically, the shape of each part of the sampling device of the present invention is not limited to the above example. Further, the sampling apparatus of the present invention can be configured as shown in FIG. 4, for example.

  Here, the sampling apparatus 100A shown in FIG. 4 is configured in the same manner as the sampling apparatus 100 of the previous example, except that the structure of the main body member 10A is different from the main body member 10 of the sampling apparatus 100 of the previous example. In FIG. 4, the same reference numerals as those in FIGS. 1 to 3 denote the same components.

  In the main body member 10A shown in FIG. 4, the first member 20A does not have a flange, and a male screw 21A is formed on the outer peripheral surface on the other end side (right side in FIG. 4) of the first member 20A. The second member 30A is not formed with a reduced diameter portion, and the second member 30A is formed with an internal thread 33A on the inner peripheral surface of one end side (left side in FIG. 4) of the gland packing housing portion 31A. The configuration of the main body member 10 of the sampling apparatus 100 of the previous example is different.

  Here, in this sampling device 100A, the male screw 21A of the first member 20A and the female screw 33A of the second member 30A are screwed together, and the other end (the right end in FIG. 4) of the first member 20A is the gland packing 40. Support. In the sampling device 100A, the male screw 51 of the pushing member 50 and the female screw 32A of the second member 30A are screwed together and the pushing member 50 is inserted into the second member 30A, whereby the tip of the pushing member 50 is inserted. While being brought into contact with the gland packing 40, the pushing member 50 presses the gland packing 40 toward the front end side (gland packing support portion) of the first member 20A.

  And according to this sampling device 100A, the insertion / extraction property of the collection tube 60 can be sufficiently ensured similarly to the sampling device 100 of the previous example. Further, it is possible to prevent the gas from leaking in the main body member 10A and to prevent the position of the sampling tube 60 from being shifted during the gas sampling.

  In addition, from the viewpoint of ease of arrangement (insertion) of the gland packing into the second member, like the gas sampling device 100 of the previous example, the gland packing on one end side (the left side in FIG. 1) of the gland packing housing portion 31. It is preferable that the inner peripheral surface is a smooth surface and no female screw is provided.

  According to the present invention, a sampling device for sampling a fluid such as a gas from a desired position by moving a sampling tube inserted therein in an axial direction, having excellent fluid sealing performance and sampling tube insertion / extraction, and Thus, it is possible to provide a sampling device capable of reliably sampling a fluid from a desired position.

DESCRIPTION OF SYMBOLS 10 Main body member 20 1st member 21 Flange 22 Gland packing support part 23 Male screw 30 2nd member 31 Gland packing accommodating part 32 Female screw 33 Reduced diameter part 40 Gland packing 50 Pushing member 51 Male screw 52 Handle 60 Sampling pipe 61 Protective pipe 62 Glass tube 63 Handle 100 Sampling device 10A Main body member 20A First member 21A Male screw 30A Second member 31A Gland packing accommodating portion 32A Female screw 33A Female screw 100A Sampling device 200 Furnace wall 210 Communication hole 220 Valve

Claims (5)

A sampling device for sampling a fluid from within a sampling space using a sampling tube,
A cylindrical body member having one end connected to the sampled space;
A cylindrical pushing member inserted into the main body member from the other end side of the main body member;
A sampling tube inserted through the body member and the pushing member disposed coaxially;
A gland packing disposed between the inner peripheral surface of the main body member and the outer peripheral surface of the sampling tube;
The main body member includes a gland packing accommodating portion that accommodates the gland packing, a gland packing supporting portion that is provided closer to the one end side than the gland packing accommodating portion and supports the gland packing, and a gland packing accommodating portion. It has an internal thread portion formed on the other end side,
The push-in member has a male screw part that is screwed with the female screw part, and compresses and deforms the gland packing after positioning the sampling tube by pressing the gland packing toward the gland packing support part side. The position of the sampling tube is fixed to prevent the position of the sampling tube from shifting during sampling .
A sampling device.   The sampling device according to claim 1, wherein the main body member has a reduced diameter portion having an inner diameter smaller than that of the gland packing housing portion on the other end side of the gland packing housing portion.   The sampling apparatus according to claim 1 or 2, wherein the sampling tube has a double tube structure of a protective tube and a glass tube disposed on the inner peripheral surface side of the protective tube.   The sampling apparatus according to claim 3, wherein a cushioning material is disposed between the protective tube and the glass tube.   The sampling apparatus according to claim 1, wherein the sampling tube has a handle on the other end side opposite to the one end side inserted into the sampling space.

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