JP5573982B2 - Cooling fluid take-out device, cooling fluid return device, and fluid device - Google Patents

Description

  The present invention relates to a cooling fluid take-out device that takes out a cooling fluid in a fluid device such as a hydroelectric power generation system, a cooling fluid return device that returns the cooling fluid to a water channel and the like, and a fluid device using the same.

  Conventionally, a hydraulic power generation system provided with a water turbine and a generator is known (for example, refer to patent documents 1). In the example of patent document 1, in the plant provided with large sized movable mechanisms, such as a generator, when the water pressure of the cooling water in a plant is too high, there is a possibility that piping, a cooling object, etc. may be damaged by this water pressure. Considering this, cooling water is supplied via a water turbine that reduces the water pressure from the upstream side.

JP 2011-89476 A

  In the example of the above patent document, it can be used in applications where the water pressure is relatively high, but it is difficult to obtain a sufficient amount of cooling water (cooling fluid) in a small-scale hydroelectric power generation system with a small flow rate and a relatively low water pressure. Conceivable. When the flow rate is small, for example, a dedicated pump may be provided to circulate the cooling fluid. However, this increases the size of the facility and increases the cost.

  The present invention has been made paying attention to the above-described problem, and an object thereof is to make it possible to easily cool a rotating electrical machine, a power conversion control device, and the like in a small-scale fluid device having a relatively small flow rate. .

In order to solve the above problems, the first invention is
A hydraulic machine (15) and a rotary electric machine (11) connected to the rotary shaft of the hydraulic machine (15) are provided, and the fluid obtained by bypassing the flow path before and after the hydraulic machine (15) In the cooling fluid take-out device used for the fluid device used for liquid cooling,
A pipe joint (3) connected to the high pressure side of the inflow pipe (1) into which the fluid to the hydraulic machine (15) enters and the outflow pipe (2) from which the fluid from the hydraulic machine (15) flows out. )When,
A dynamic pressure acting portion (103, 105...) Having one end opened in the pipe joint (3) in a direction to receive the dynamic pressure of the fluid flowing in the pipe joint (3);
It is provided with.

  In this configuration, the cooling fluid can be taken in using the dynamic pressure of the fluid flowing into the hydraulic machine (15).

In addition, the second invention,
In the cooling fluid take-out device of the first invention,
The dynamic pressure acting portion (103, 105...) Is an L-shaped piping member, and a tip thereof faces the opening of the pipe joint (3) in the pipe joint (3).

In this configuration, the dynamic pressure is received by the L-shaped piping member .

Also, a third aspect of the present invention,
A hydraulic machine (15) and a rotary electric machine (11) connected to the rotary shaft of the hydraulic machine (15) are provided, and the fluid obtained by bypassing the flow path before and after the hydraulic machine (15) In a fluid device used for liquid cooling,
A cooling fluid take-out device (100) of the first invention;
Returning cold却流body unit (200),
Equipped with a,
The cooling fluid return device (200)
Pipe fitting (4) connected to the low pressure side of the water pressure of the inflow pipe (1) into which the fluid to the hydraulic machine (15) enters and the outflow pipe (2) from which the fluid from the hydraulic machine (15) flows out )When,
Opening in the pipe joint (4) connected to the low pressure side in the direction in which the internal cooling fluid is sucked out by the flow of fluid in the pipe joint (4) connected to the low pressure side at one end It has a pressure action part (203,205 ...) .

  According to the first invention, the cooling fluid can be taken in using the dynamic pressure of the fluid, so that it is easy to use the rotary electric machine and the power conversion control device with a simple structure without using power by a pump or the like. Can be cooled.

  According to the second invention, the above effect can be realized with a simple structure.

According to the fourth aspect of the invention, since the internal cooling fluid is sucked out by the flow of the fluid in the pipe joint, the rotary electric machine and the electric power can be used with a simple structure without using power by a pump or the like. Electrical components such as conversion control devices can be easily cooled.

FIG. 1 is a schematic front view of the hydroelectric power generation system according to the first embodiment. FIG. 2 is a schematic side view of the hydroelectric power generation system. FIG. 3 is a perspective view of an impeller provided in a water wheel of the hydroelectric power generation system. FIG. 4 shows the cooling fluid take-out device according to the first embodiment. FIG. 5 shows the cooling fluid return device according to the first embodiment. FIG. 6 shows an example in which the water intake is arranged so as to be the center of the flange pipe. FIG. 7 shows an example in which the discharge port is arranged so as to be the center of the flange pipe. FIG. 8 shows a cooling fluid take-out device according to the first modification. FIG. 9 is an example in which the water intake is arranged to be the center of the flange pipe in the first modification. FIG. 10 shows a cooling fluid take-out device according to the second modification. FIG. 11 shows the direction of water flow when the cooling fluid extraction device according to Modification 2 is used as a cooling fluid return device. FIG. 12 shows a cooling fluid take-out device according to the third modification. FIG. 13 shows an example in which the water intake is offset from the center of the flange pipe in the third modification. FIG. 14 shows a cooling fluid take-out device according to Modification 4. FIG. 15 shows an example in which the water intake is offset from the center of the flange pipe in the fourth modification. FIG. 16 is a longitudinal sectional view of the hydroelectric power generation system according to the second embodiment. FIG. 17 is a longitudinal sectional view of a hydroelectric power generation system according to a modification of the second embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The following embodiments are essentially preferable examples, and are not intended to limit the scope of the present invention, its application, or its use.

Embodiment 1 of the Invention
A hydroelectric power generation system will be described as an example of the fluid device of the present invention. FIG. 1 shows a schematic front view of a hydroelectric power generation system (500) according to Embodiment 1 of the present invention, and FIG. 2 shows a schematic side view of the hydroelectric power generation system (500). As shown in FIGS. 1 and 2, the hydroelectric power generation system (500) includes a generator (11), a water turbine (15), an AC / DC converter (20), and a DC / AC converter (21).

  The water wheel (15) includes a water flow inflow pipe (1), a water flow outflow pipe (2), an impeller (10), and a casing (14). This water turbine (15) is an example of the hydraulic machine of the present invention. The hydroelectric power generation system (500) is an inline type in which the inflow pipe (1) and the outflow pipe (2) connected to the casing (14) are arranged in a straight line. A cooling fluid take-out device (100) is connected to the inflow pipe (1), and a cooling fluid return device (200) is connected to the outflow pipe (2).

  An impeller (10) shown in FIG. 3 is arranged in the casing (14). This impeller (10) is connected to the lower end of the rotating shaft (10a) arranged in the vertical direction, and the blade (10c) is arranged in a spiral at the center (10b) to which the rotating shaft (10a) is connected. Has been. The plurality of blades (10c) are rotated by receiving pressure from the water flow from the inflow pipe (1) to rotate the rotating shaft (10a). For this impeller (10), for example, an impeller provided in a spiral pump is used.

  Above the water turbine (15), a generator (11) connected to the upper end of the rotating shaft (10a) arranged in the vertical direction is arranged, and arranged below the generator (11). The mounting base (12) and the hollow base (13) surrounding the rotating shaft (10a) of the impeller (10) are fastened and fixed by fasteners such as bolts, and the hydroelectric power generation system (500) A water turbine (15) and a generator (11) are vertically arranged in a vertical direction.

  The generator (11) is connected to the rotating shaft (10a) of the water turbine (15) and is rotationally driven to generate power. The generator (11) is an example of the rotating electrical machine of the present invention.

  Then, on the left side of the generator (11) in FIG. 2 (horizontal direction perpendicular to the direction of the water flow flowing through the water turbine (15)), the electric power generated by the generator (11) or the power source (22) A first power conversion control device (20) as a device for converting or controlling the power from the power source or a component thereof is arranged. In the present embodiment, the first power conversion control device (20) exemplifies an AC / DC converter that converts AC power generated by the generator (11) into DC as an example. Further, on the right side of FIG. 2 of the generator (11), there is a second device as a device or a component for further converting or controlling the power converted or controlled by the first power conversion control device (20). A power conversion control device (21) is arranged. In the present embodiment, for example, the second power conversion control device (21) converts the DC power converted by the AC / DC converter exemplified above into AC power for conversion into, for example, a commercial power source (22). The DC / AC converter which performs is illustrated. These AC / DC converter (20) and DC / AC converter (21) are both formed to have substantially the same height and width as the generator (11), as can be seen from FIG.

  The AC / DC converter (20) converts AC power generated by the generator (11) into DC. The DC / AC converter (21) converts the direct current converted by the AC / DC converter (20) into alternating current and returns it to, for example, a commercial power source (22).

  In addition, although an AC / DC converter was illustrated as said 1st power conversion control apparatus (20) and a DC / AC converter was illustrated as 2nd power conversion control apparatus (21), these power conversion control apparatuses ( There may be a plurality of 20) and (21).

  Next, a cooling system for cooling the generator (11), the AC / DC converter (20), and the DC / AC converter (21) in the vertical hydroelectric power generation system (500) will be described.

  A water cooling jacket (30) is disposed between the generator (11) and the AC / DC converter (20) on the left side of the generator (11) in FIG. 2, and the water cooling jacket (30) The generator (11) and the AC / DC converter (20) are detachably connected and fixed via the.

  Then, the cooling fluid take-out device (100) connected to the flow path on the upstream side of the water turbine (15), that is, the inflow pipe (1) is supplied with water (cooling fluid supply) from the cooling fluid take-out device (100). A cooling fluid pipe (40) into which an example) flows is connected via a pipe joint (301). This cooling fluid pipe (40) extends horizontally to the water turbine (15) side, then rises above the cooling fluid take-out device (100), and bends in the lateral direction near the lower part (I) of the generator (11). The water cooling jacket (30) is connected to one end of the cooling fluid passage on the upstream side of the water wheel (15), and the water flow is supplied to the water cooling jacket (30). A cooling fluid pipe (41) for discharging the water flow is connected to the other end of the cooling fluid passage of the water cooling jacket (30) on the downstream side of the water wheel (15). The cooling fluid pipe (41) extends in the horizontal direction downstream of the water turbine (15), then bends downward, and further horizontally in the downstream of the water turbine (15) at a position directly above the outflow pipe (2). Extends and is connected to the top of the cooling fluid return device (200) connected to the outflow pipe (2) via a pipe joint (301) to return water to the cooling fluid return device (200).

  Therefore, the water flow to the water cooling jacket (30) is supplied from the upstream side of the water turbine (15) via the cooling fluid pipe (40), and then returned to the downstream side of the water turbine (15) via the cooling fluid pipe (41). It is.

  A water-cooling jacket (31) is arranged between the generator (11) and the DC / AC converter (21) on the right side of the generator (11) in FIG. The generator (11) and the DC / AC converter (21) are detachably connected and fixed via the water cooling jacket (31).

  The cooling fluid pipe (40) connected to the cooling fluid take-out device (100) on the upstream side of the water turbine (15) branches to the right side of FIG. A cooling fluid pipe connected to one end of the cooling fluid passage of the jacket (31) on the upstream side of the water turbine (15) to supply the water flow to the water cooling jacket (31) and to the cooling fluid return device (200) ( 41) branches to the right side of FIG. 2 near the lower part of the generator (O) and is connected to one end of the cooling fluid passage of the water cooling jacket (31) on the downstream side of the water turbine (15), and the water cooling jacket (31) The water flow after distribution is returned to the cooling fluid return device (200) through the cooling fluid pipe (41).

  Further, a water-cooled rear cover (32) is disposed above the generator (11), and its lower surface is detachably fixed to the upper surface of the generator (11). The water-cooled rear cover (32) is formed to have the same length and width as those of the generator (11) in the length of the water flow direction with respect to the water turbine (15) and the width in the orthogonal direction. . Further, the water-cooled rear cover (32) has a cooling fluid passage (not shown) inside, and the cooling fluid passage is disposed, for example, in the vicinity of the coil end of the generator (11). One end opens on the upstream side of the water turbine (15), and the other end opens on the downstream side of the water turbine (15).

  The cooling fluid pipe (40) connected to the cooling fluid take-out device (100) branches and extends upward near the lower part of the generator (I) and then bends downstream of the water turbine (15). The cooling fluid pipe (41) connected to one end of the cooling fluid passage of the water cooling rear cover (32) is supplied to the water cooling rear cover (32) and connected to the cooling fluid return device (200). After branching near the lower part of the generator (O) and extending upward, it is bent upstream of the water turbine (15) and connected to the other end of the cooling fluid passage of the water-cooled rear cover (32). 32) The water flow after distribution is returned to the cooling fluid return device (200) through the cooling fluid pipe (41).

  Therefore, the cooling fluid piping (40) connected to the cooling fluid take-out device (100) and the cooling fluid piping (41) connected to the cooling fluid return device (200) are both near the lower part of the generator (I), At (O), the water flow branches into the left side, the right side, and the upper side in FIG. 2, and a water flow is supplied in parallel to the water cooling jacket (30), the water cooling jacket (31), and the water cooling rear cover (32), respectively.

  As described above, in this embodiment, cooling water (an example of a cooling fluid) is supplied to the water cooling jackets (30, 31) and the water cooling rear cover (32) by bypassing the flow passages before and after the water turbine (15). The AC / DC converter (20), the DC / AC converter (21), and the generator (11) (for example, a bearing) are water-cooled (liquid-cooled).

<Configuration of cooling fluid take-out device>
FIG. 4 shows the cooling fluid extraction device (100) according to the first embodiment. In FIG. 4, the left side is a front view and the right side is a side sectional view (the same applies hereinafter). The cooling fluid take-out device (100) includes a flange pipe (3) provided with flanges at both ends, and a suction pipe (103) that takes out the fluid in the flange pipe (3) as a cooling fluid. The flange pipe (3) is an example of the pipe joint of the present invention.

  The suction pipe (103) is obtained by bending a pipe member into an L shape and processing one end thereof so as to have a cone shape (referred to as a cone portion (104)) having a larger diameter on the end side. The suction pipe (103) is a water intake (106) through which the opening on the cone part (104) side takes in the cooling water. Since the suction pipe (103) can be manufactured by expanding a straight pipe, the cooling fluid extraction device (100) can be manufactured at low cost.

  In the suction pipe (103), the cone part (104) is covered with a flow regulating member (105). Specifically, the rectifying member (105) is a member provided so as to cover the cone portion (104) of the suction pipe (103), and the suction pipe (103) is resistant to the water flow in the flange pipe (3). It was also provided to prevent it from becoming. In this example, as shown in FIG. 4, the rectifying member (105) extends from one end on the cone portion (104) side of the suction pipe (103) to the vicinity of the portion where the suction pipe (103) is bent (bent portion). There are a cylindrical portion formed and a substantially spherical portion formed on the right side (right side in FIG. 4) of the bent portion. The suction pipe (103) is attached to the flange pipe (3) so that the water intake (106) opens toward the opening of the flange pipe (3) (see FIG. 4). The suction pipe (103) (cone portion (104)) and the rectifying member (105) constitute an example of the dynamic pressure acting portion of the present invention.

  In the present embodiment, the cooling fluid take-out device (100) and the inflow pipe (1) are fastened with flanges. In this case, the cooling fluid take-out device (100) is configured so that the water intake (106) of the suction pipe (103) faces the side opposite to the inflow pipe (1) of the water turbine (15), that is, the upstream side. Mounted on (1). That is, the intake port (106) of the suction pipe (103) opens in the flange pipe (3) in a direction to receive the dynamic pressure of the fluid flowing in the flange pipe (3). The suction pipe (103) is connected to the cooling fluid pipe (40) via the pipe joint (301).

<Configuration of cooling fluid return device>
FIG. 5 shows the cooling fluid return device (200) according to the first embodiment. The cooling fluid return device (200) includes a flange pipe (4) provided with flanges at both ends, and a discharge pipe for returning the cooling water used for cooling the AC / DC converter (20) and the like into the flange pipe (4). (203). The flange pipe (4) is an example of the pipe joint of the present invention.

  The discharge pipe (203) is formed by bending a piping member into an L shape. Further, the discharge pipe (203) is covered with a rectifying member (205). The flow regulating member (205) is provided to prevent the discharge pipe (203) from resisting the water flow in the flange pipe (4). In this example, both ends of the rectifying member (205) are streamlined as shown in FIG. The discharge pipe (203) and the rectifying member (205) constitute an example of the dynamic pressure acting part of the present invention.

  In the present embodiment, the cooling fluid return device (200) and the outflow pipe (2) are fastened with flanges. In this case, the cooling fluid return device (200) has an opening on the front end side in the flange pipe (4) of the discharge pipe (203) (hereinafter referred to as a discharge port (206)) on the side opposite to the outflow pipe (2), that is, It attaches to the outflow pipe (2) so as to face the downstream side. That is, the discharge port (206) opens in the flange pipe (4) in a direction in which the internal cooling fluid is sucked out by the flow of the fluid in the flange pipe (4). The discharge pipe (203) is connected to the cooling fluid pipe (41) through the pipe joint (301).

<Cooling fluid removal and cooling fluid return operation>
In the present embodiment, when a water flow is supplied into the cooling fluid extraction device (100), the water flow is supplied to the water turbine (15) via the inflow pipe (1). Further, in the cooling fluid take-out device (100), the dynamic pressure due to the water flow acts on the water intake port (106) of the suction pipe (103) (in FIG. 4 and the like, the direction of the water flow is indicated by an arrow, and so on). As a result, water in the cooling fluid take-out device (100) is cooled to the respective water cooling jacket (30, 31) and water cooling rear cover (32) from the suction pipe (103) via the cooling fluid pipe (40). Supplied as water. Thereby, an AC / DC converter (20), a DC / AC converter (21), etc. are cooled favorably. And the cooling water which passed the water cooling jacket (30, 31) and the water cooling rear cover (32) flows into cooling fluid piping (41). In the cooling fluid return device (200), the discharge port (206) of the discharge pipe (203) faces the downstream of the water flow, so the water inside the discharge pipe (203) ( Cooling water) is sucked out from the discharge port (206). As a result, the cooling water in the cooling fluid pipe (41) is discharged into the cooling fluid return device (200). As described above, in the present embodiment, the cooling water circulates and the AC / DC converter (20) and the DC / AC converter (21) are water-cooled satisfactorily.

<< Effect in this embodiment >>
In this embodiment, the cooling fluid take-out device (100) takes in the cooling water using the dynamic pressure of the water flowing into the water turbine (15) and supplies it to the water cooling jacket (30, 31) and the water cooling rear cover (32). To do. Therefore, according to the present embodiment, the generator (11) (rotary electric machine) and electrical components (for example, AC / DC converter (20) and DC / AC) are used without using power such as a pump and with a simple structure. The converter (21) can be easily water-cooled. In other words, this embodiment is used for water cooling of electrical components such as a generator (an example of a rotating electrical machine) and a DC / AC converter (21) in a small-scale hydroelectric power generation system (an example of a fluid device) with a relatively small flow rate. Useful.

  Also, the cooling fluid return device (200) is a discharge that opens into the flange pipe (4) in the direction in which the cooling water inside the cooling fluid pipe (41) is sucked by the flow of water in the flange pipe (4). It has a tube (203). Therefore, also from this viewpoint, in the present embodiment, the rotating electrical machine and the electrical component can be easily water-cooled in a small fluid device having a relatively small flow rate.

  The positions of the intake port (106) and the discharge port (206) are examples. For example, FIG.6 and FIG.7 is the example arrange | positioned so that a water intake (106) and a discharge port (206) may become the center of flange piping (3,4).

<< Variation 1 of Embodiment 1 >>
FIG. 8 shows a cooling fluid take-out device (100) according to the first modification. That is, the suction pipe (103) in which the piping member is bent in an L shape and one end thereof is processed into a cone shape having a larger diameter on the end side is connected to the flange pipe (3). Since the suction pipe (103) can also be manufactured by expanding a straight pipe, the cooling fluid take-out device (100) can be manufactured at a low cost. The cooling fluid take-out device (100) can be connected to the outflow pipe (2) and used as a cooling fluid return device (200). When used as the cooling fluid return device (200), the opening (intake port (106)) of the suction pipe (103) is directed downstream.

  FIG. 9 is an example in which the water intake (106) is arranged so as to be at the center of the flange pipe (3,4) in the first modification.

<< Modification 2 of Embodiment 1 >>
FIG. 10 shows a cooling fluid take-out device (100) according to the second modification. In this example, a pocket portion (107) is formed on the inner peripheral surface of the flange pipe (3), and a suction pipe (103) is connected so as to communicate with the space in the pocket portion (107). The opening of the pocket (107) is a water intake (106). The suction pipe (103) is a straight pipe in the example of FIG. Also in this example, by disposing the cooling fluid extraction device (100) so that the water intake port (106) faces upstream, it becomes possible to take in the cooling water by dynamic pressure. In this example, the pocket portion (107) and the suction pipe (103) constitute an example of the dynamic pressure acting portion.

  In this example, the cooling fluid extraction device (100) can also be used as a cooling fluid return device (200). FIG. 11 shows the direction of water flow when the cooling fluid extraction device (100) according to the second modification is used as the cooling fluid return device (200). The opening that functions as the water intake port (106) when used as the cooling fluid extraction device (100) functions as the discharge port (206). In this modification, the cooling fluid take-out device (100) and the cooling fluid return device (200) can be shared, so that the manufacturing cost can be reduced.

<< Modification 3 of Embodiment 1 >>
FIG. 12 shows a cooling fluid extraction device (100) according to the third modification. In this example, the cooling fluid take-out device (100) is formed by fixing a suction pipe (103) formed by bending a pipe member in an L shape to a flange pipe (3). Moreover, the water intake (106) is arrange | positioned so that it may become the center of flange piping (3,4). This form is easy to process and can be manufactured at low cost. And also in this example, it becomes possible to take in cooling water by dynamic pressure by arrange | positioning a cooling fluid extraction device (100) so that a water intake (106) may face upstream.

  FIG. 13 shows an example in which the water intake (106) is offset from the center of the flange pipe (3) in the third modification. The cooling fluid take-out device (100) according to this modification can also be used as a cooling fluid return device (200) by connecting to the outflow pipe (2). When used as the cooling fluid return device (200), the opening (intake port (106)) of the suction pipe (103) is directed downstream.

<< Modification 4 of Embodiment 1 >>
FIG. 14 shows a cooling fluid take-out device (100) according to the fourth modification. In this example, the cooling fluid take-out device (100) is formed by cutting the tip of the piping member diagonally and fixing the suction pipe (103) processed like the tip of the injection needle to the flange pipe (3). is there. Moreover, the water intake (106) is arrange | positioned so that it may become the center of flange piping (3,4). And also in this example, it becomes possible to take in cooling water by dynamic pressure by arrange | positioning a cooling fluid extraction device (100) so that a water intake (106) may face upstream. FIG. 15 is an example in which the water intake (106) is offset from the center of the flange pipe (3) in the fourth modification.

<< Embodiment 2 of the Invention >>
FIG. 16 is a longitudinal sectional view of the hydroelectric power generation system (500) according to the second embodiment. In this example, a generator (11) and a water turbine (15) are incorporated in a pipe (main pipe (400)). Also in the hydroelectric power generation system (500) having such a configuration, the cooling fluid take-out device (100) and the cooling fluid return device (200) shown in the first embodiment and the modifications thereof can be used. FIG. 16 shows an example in which the cooling fluid take-out device (100) and the cooling fluid return device (200) of the first embodiment are used.

  In the example of FIG. 16, a water cooling jacket (30) similar to that of the first embodiment is attached to the outer peripheral surface of the main body pipe (400). An AC / DC converter (20) and a DC / AC converter (21) are attached to the water cooling jacket (30) to cool these electrical components.

  Of course, the configuration of the water cooling jacket (30) is an example, and the electrical component may be cooled by other methods. FIG. 17 shows an example in which the water-cooling jacket (30) is not used, and a pipe is wound around the main body pipe (400). This also cools the electrical equipment.

<< Other Embodiments >>
Note that the combination of the cooling fluid take-out device (100) and the cooling fluid return device (200) described in the first embodiment and the modifications thereof is arbitrary. For example, the cooling fluid extraction device (100) of the first embodiment and the cooling fluid return device (200) of the first modification may be used in pairs.

  In addition to the hydroelectric power generation system, the cooling fluid take-out device (100) and the cooling fluid return device (200) include, for example, a pump (an example of a hydraulic machine) and a motor (an example of a rotating electric machine) that drives the pump. It can also be used for a pump system (an example of a fluid device). Even in a pump system, it is important to appropriately cool a motor and a power conversion control device that supplies power to the motor. When the cooling fluid take-out device (100) or cooling fluid return device (200) is used in the pump system, the cooling fluid return device (200) is connected to the pump suction port side and the cooling fluid is connected to the pump discharge port side. A take-out device (100) is provided. That is, the cooling fluid take-out device (100) is connected to the high-pressure side of the hydraulic pressure in the inflow pipe (1) of the hydraulic machine (15) and the outflow pipe (2) through which the fluid from the hydraulic machine (15) flows out. The cooling fluid return device (200) is configured to reduce the water pressure of the inflow pipe (1) into which fluid enters the hydraulic machine (15) and the outflow pipe (2) from which fluid from the hydraulic machine (15) flows out. It is connected to the low pressure side.

  The flange pipe (3,4) is an example of a pipe joint. For example, a so-called wafer type pipe joint may be adopted.

  The cooling fluid is not limited to water. In addition to water, for example, brine can be considered.

  Further, the object to be cooled by the cooling fluid is not limited to the rotating electric machine (11) or the power conversion control device (20, 21).

  INDUSTRIAL APPLICABILITY The present invention is useful as a cooling fluid extraction device that extracts a cooling fluid in a fluid device such as a hydroelectric power generation system, a cooling fluid return device that returns the cooling fluid to a water channel or the like, and a fluid device using the same.

1 Inflow pipe 2 Outflow pipe 3 Flange piping (Fitting)
4 Flange piping (Fittings)
15 water wheel 11 generator (rotary electric machine)
20 AC / DC converter (power conversion control device)
21 DC / AC converter (power conversion control device)
100 Cooling fluid take-out device 103 Suction pipe (dynamic pressure acting part)
200 Cooling fluid return device 203 Discharge pipe 500 Hydroelectric power generation system (fluid device)

Claims (3)

A hydraulic machine (15) and a rotary electric machine (11) connected to the rotary shaft of the hydraulic machine (15) are provided, and the fluid obtained by bypassing the flow path before and after the hydraulic machine (15) In the cooling fluid take-out device used for the fluid device used for liquid cooling,
A pipe joint (3) connected to the high pressure side of the inflow pipe (1) into which the fluid to the hydraulic machine (15) enters and the outflow pipe (2) from which the fluid from the hydraulic machine (15) flows out. )When,
A dynamic pressure acting portion (103, 105...) Having one end opened in the pipe joint (3) in a direction to receive the dynamic pressure of the fluid flowing in the pipe joint (3);
A cooling fluid take-out device comprising: The cooling fluid takeout device of claim 1,
The dynamic pressure acting portion (103, 105...) Is an L-shaped piping member, and the cooling fluid is characterized in that the tip thereof faces the opening of the pipe joint (3) in the pipe joint (3). Take-out device. A hydraulic machine (15) and a rotary electric machine (11) connected to the rotary shaft of the hydraulic machine (15) are provided, and the fluid obtained by bypassing the flow path before and after the hydraulic machine (15) In a fluid device used for liquid cooling,
A cooling fluid extraction device (100) according to claim 1;
Returning cold却流body unit (200),
Equipped with a,
The cooling fluid return device (200)
Pipe fitting (4) connected to the low pressure side of the water pressure of the inflow pipe (1) into which the fluid to the hydraulic machine (15) enters and the outflow pipe (2) from which the fluid from the hydraulic machine (15) flows out )When,
Opening in the pipe joint (4) connected to the low pressure side in the direction in which the internal cooling fluid is sucked out by the flow of fluid in the pipe joint (4) connected to the low pressure side at one end A fluid device comprising a pressure acting portion (203, 205 ...) .

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