JP5573983B2 - Fluid device - Google Patents

Description

  The present invention relates to an improvement of a fluid device including a hydraulic machine of a water turbine or a pump and a rotating electric machine of a generator or an electric motor, and more particularly to a measure for improving the maintainability of the device.

  Conventionally, as a hydroelectric generator having a turbine and a generator, a turbine and a generator having a rotating shaft connected to the turbine are arranged in one casing, and the water flow supplied to one end of the casing is After feeding to the water wheel, the water wheel is caused to flow out from the other end of the casing, and the water wheel is rotationally driven, and the rotation shaft of the generator is rotationally driven by the rotation of the water wheel to generate electric power. A structure for cooling a generator arranged in the casing is known. Further, Patent Document 1 discloses that a hydroelectric generator including a water turbine and a generator is a water-cooled generator.

  Further, as a conventional pump system including a pump and an electric motor, a water pump is connected to the rotating shaft of the electric motor, the water pump and the electric motor are arranged vertically, and a power conversion control device such as an inverter for controlling the electric motor. Is connected to the side of the electric motor, and the water pump is arranged at the connection portion between the inflow pipe and the outflow pipe, and the water pump is driven to rotate by the electric motor that receives the electric power. A configuration for supplying the power is known.

JP 2011-89476 A

  However, in the above hydroelectric generator, the generator is cooled by the water flow flowing into the casing, and the generator is water-cooled, so that it is possible to improve the cooling performance of the generator and reduce the size, Since the generator is built in the casing together with the water turbine, there is a drawback that the maintenance and maintainability of the generator are low.

  In the above pump system, the electric motor and the power conversion control device such as an inverter arranged on the side of the pump system are air-cooled. For this reason, the cooling performance of these devices is low and there is a disadvantage that the size is increased.

  In view of the above-mentioned drawbacks, the present invention aims to provide a fluid device including a hydraulic machine of a water turbine or a pump and a rotary electric machine of a generator or an electric motor, and the rotary electric machine or the power conversion control device is water-cooled. The purpose is to improve the cooling performance and reduce the size by detachably connecting to improve the maintenance and maintainability of the rotating electrical machine.

To achieve the above object, a fluid device according to a first aspect of the present invention is a fluid device comprising a hydraulic machine (15) and a rotating electric machine (11) connected to the hydraulic machine (15). The cooling pipe (40, 41) that bypasses the upstream side and the downstream side of (15) and flows the fluid, and is arranged in the middle of the cooling pipe (40, 41) and flows through the cooling pipe (40, 41). The hydraulic machine (15) and the rotating electrical machine (11) are detachably connected to each other, and further include a power conversion control device ( 20, 21), the cooler (30, 31) is disposed between the rotating electrical machine (11) and the power conversion control device (20, 21), the cooling pipe (40 , 41) is a both-side cooler (30 , 31) that cools both the rotating electrical machine (11) and the power conversion control device (20, 21) with a fluid flowing through the power conversion control device (20, 21) The rotating electric machine (11 ) Or the first power conversion control device (20) that converts or controls the power from the power source or the power from the power source, and further converts or controls the power converted or controlled by the first power conversion control device (20). A second power conversion control device (21) for controlling, and the double cooler (30, 31) is provided between the rotating electric machine (11) and the first power conversion control device (20). A first cooler (30) disposed between and a second cooler disposed between the rotating electric machine (11) and the second power conversion control device (21). (30).

  In the fluid device according to the first aspect of the invention, the fluid flows through the cooling pipe to the cooler, and the cooler can cool, for example, the rotating electric machine and the power conversion control device. As a liquid cooling type, the cooling performance is improved and the size is reduced.

  Moreover, since the hydraulic machine and the rotary electric machine are detachably connected, it is possible to perform this easily and in a short time during maintenance and maintenance of the hydraulic machine and the rotary electric machine.

In addition, since the rotary electric machine and the power conversion control device are located on both sides of the both-side cooler, the rotary electric machine and the power conversion control device are simultaneously cooled by this one cooler. Here, since there is only one cooling system for the rotating electrical machine and the power conversion control device, the entire fluid device is reduced in size and weight while liquid cooling is used for the rotating electrical machine and the power conversion control device. It is possible to reduce costs, save space, and simplify construction and maintenance.

Further, the rotary electric machine and the first power conversion control device are located on both sides of the first cooler, and the rotary electric machine and the second power conversion control device are located on both sides of the second cooler. Since these rotary electric machines and the first and second power conversion control devices are cooled at the same time, the cooling method of the rotary electric machine and the first and second power conversion control devices is liquid-cooled. The entire fluid device including the rotating electrical machine and the first and second power conversion control devices can be reduced in size, weight, cost, space saving, construction and maintenance.

According to a second aspect of the present invention, the fluid device includes a rotating electric machine cooler (32) that is supplied with fluid from the cooling pipe (40, 41) and cools the rotating electric machine (11). The mechanical cooler (32) is located at an end of the rotating electric machine (11) other than the end where the first cooler (30) and the second cooler (31) are located. It is characterized by doing.

In the second aspect of the invention, since the rotary electric machine is cooled by the rotary electric machine cooler in addition to the first and second coolers that are both coolers, the cooling performance of the rotary electric machine is further improved. To do.

According to a third aspect of the present invention, in the fluid device, the rotating electrical machine (11) is positioned above the hydraulic machine (15), and the first and second power conversion controllers (20), (21), and The first and second coolers (30) and (31) are located on the side of the rotating electric machine (11) perpendicular to the fluid flow direction in the hydraulic machine (15), and the rotation The electric machine cooler (32) is located above the rotating electric machine (11).

In the third aspect of the present invention, the arrangement positions of the first and second power conversion control devices and the first and second coolers are specified, and these are the positions of the hydraulic machine in the side of the rotary electric machine. Since it is arranged on the side perpendicular to the fluid flow direction, it is obstructed by the fluid inflow and outflow pipes connected to the hydraulic machine during maintenance and maintenance of these rotating electrical machines and power conversion control devices. They can be easily maintained and maintained. Further, the stator coil end and the bearing, which are considered to have a relatively high temperature in the rotary electric machine, can be individually and effectively cooled by the cooler for the rotary electric machine.

According to a fourth aspect of the present invention, in the fluid device, the rotating electrical machine (11) is positioned above the hydraulic machine (15), and the first and second power conversion controllers (20), (21), and The first and second coolers (30), (31) are located on the side of the rotating electrical machine (11) parallel to the fluid flow direction in the hydraulic machine (15), and The rotating electric machine cooler (32) is located above the rotating electric machine (11).

In the fourth aspect of the invention, the arrangement positions of the first and second power conversion control devices and the first and second coolers are specified, and these are the positions of the hydraulic machine in the side of the rotary electric machine. Since it is arranged on the side parallel to the fluid flow direction, the first and second power conversion control devices and the first and second coolers are along the direction in which the fluid piping connected to the hydraulic machine extends. The whole fluid device can be made slim and compact.

According to a fifth aspect of the present invention, in the fluid device, the cooling pipe (40, 41) includes a first cooler (30), a second cooler (31), and a rotation of the double cooler (30, 31). The electric machine cooler (32) branches in parallel.

In the fifth aspect , the first cooler, the second cooler, and the rotary electric machine cooler of the both coolers are connected in parallel to the cooling pipe, so that the resistance of fluid supply in the cooling pipe is small. Become. Therefore, even when this fluid device is arranged in a fluid path with a small head or when the capacity of a pump provided as a fluid machine is small, sufficient fluid can be supplied to these three coolers. The rotary electric machine and the first and second power conversion control devices can be cooled well.

  According to the fluid device of the first invention, for example, a rotary electric machine or a power conversion control device can be liquid-cooled, and while improving the cooling performance and miniaturization of the rotary electric machine or the power conversion control device, It is possible to connect the hydraulic machine and the rotating electric machine in a detachable manner so that maintenance and maintenance of the hydraulic machine and the rotating electric machine can be performed easily and in a short time.

In addition, while the cooling system for the rotating electrical machine and the power conversion control device is a single system, the entire fluid device can be reduced in size and weight, reducing costs, saving space, and simplifying construction and maintenance. It is.

Furthermore, even when there are a plurality of power conversion control devices, the cooling system of the rotating electrical machine and the power conversion control devices thereof is simplified, and the entire fluid device including these devices is reduced in size and weight. It is possible to reduce the price, save space, and simplify the construction and maintenance.

In addition, according to the second invention, the rotary electric machine can be cooled by the three coolers, and the cooling performance of the rotary electric machine can be further improved.

Further, according to the third aspect of the present invention, maintenance and maintenance of a rotating electrical machine and a power conversion control device are performed without being disturbed by an inflow pipe or an outflow pipe of a fluid connected to the hydraulic machine. Can be easily performed, and the portion of the rotating electrical machine that is at a high temperature can be effectively cooled.

Furthermore, according to the fourth aspect of the invention, the power conversion control device and its cooler are arranged in the fluid flow direction of the hydraulic machine, so that the fluid device as a whole can be made slim and compact.

In addition, according to the fifth aspect of the present invention, even when the present fluid device is disposed in a fluid path with a small head or when the capacity of the pump provided is small, the rotary electric machine or the plurality of power conversion controls The apparatus can be cooled well.

FIG. 1 is a schematic front view of a fluidic device according to the first embodiment. FIG. 2 is a schematic side view of the fluidic device. FIG. 3 is a perspective view of an impeller provided in a water wheel provided in the fluid device.

  Hereinafter, embodiments of the present invention will be described in detail 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.

(First embodiment)
FIG. 1 shows a schematic front view of a fluidic device according to the first embodiment of the present invention, and FIG. 2 shows a schematic side view of the fluidic device.

  1 and 2, (1) is a water flow inflow pipe, (2) is a water flow outflow pipe, and the water supply pipe (3) is connected to the outflow pipe (1). Is an in-line type in which a water discharge pipe (4) is connected, and the inflow path and outflow path of the water flow are arranged in a straight line.

In the middle of the water flow path formed by the inflow pipe (1) and the outflow pipe (2), a casing (14) containing an impeller (10) shown in FIG. 3 is arranged. The impeller (10) is connected to the lower end of a rotary shaft (10a) arranged in the vertical direction, and a plurality of blades (10c) are connected to the central portion (10b) to which the rotary shaft (10a) is connected. They are arranged in a spiral. The plurality of blades (10c) are rotated by receiving pressure from the water flow from the inflow side pipe (1) to rotate the rotating shaft (10a). For this impeller (10), for example, an impeller provided in a centrifugal pump is used.

And the inflow pipe (1), the outflow pipe (2), the impeller (10) having a rotating shaft (10a), and a hollow pedestal (13) surrounding the rotating shaft (10a) of the water turbine (15) The casing (14) constitutes a water turbine (hydraulic machine) (15) that receives the water flow and rotationally drives the rotating shaft (10a).

  Above the water turbine (15), a generator (rotating electric machine) (11) connected to the upper end of a rotating shaft (10a) arranged in the vertical direction is arranged. This generator (11) The front cover (12) disposed below the hollow shaft (13a) surrounding the rotating shaft (10a) of the water turbine (15) is fastened by a fastener such as a bolt to generate power from the water turbine (15). The machine (11) is detachably connected and fixed, and the fluid device is a vertical type in which the water turbine (15) and the generator (11) are arranged in the vertical direction.

  The generator (11) is connected to the rotating shaft (10a) of the water turbine (15) and is rotationally driven to generate three-phase AC power.

  Then, on the left side of the generator (11) in FIG. 2 (the 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, as an example, the first power conversion control device (20) exemplifies an AC / DC converter that converts three-phase AC power generated by the generator (11) into DC. Further, on the right side of FIG. 2 of the generator (11), there is a second device as a device or one 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 this embodiment, as an example, the second power conversion control device (21) converts the DC power converted by the AC / DC converter exemplified above into AC power to convert it into, for example, a commercial power source (22). The DC / AC converter which performs is illustrated. Both the AC / DC converter (20) and the DC / AC converter (21) are 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 the three-phase alternating current generated by the generator (11) into direct current. 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 the AC / DC converter was illustrated as said 1st power conversion control apparatus (20) and the 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 fluid device will be described.

  On the left side of the generator (11) in FIG. 2, a water cooling jacket (first cooler of both coolers) (30) is provided between the generator (11) and the AC / DC converter (20). The generator (11) and the AC / DC converter (20) are detachably connected and fixed via the water cooling jacket (30).

  Then, the water turbine (15) is bypassed from the water supply pipe (3) to the upstream flow path of the water turbine (15), that is, the water supply pipe (3) connected to the inflow pipe (1). A cooling pipe (40) through which a part of the water flows is connected. This cooling pipe (40) extends horizontally to the water turbine (15) side, then rises above the inflow pipe (1), bends laterally near the lower part (I) of the generator (11), and A water flow is supplied to the water cooling jacket (30) by being connected to one end of the cooling water passage of the water cooling jacket (30) on the upstream side of the water turbine (15). A cooling pipe (41) for discharging water flow is connected to the other end of the cooling water passage of the water cooling jacket (30) on the downstream side of the water wheel (15). The cooling pipe (41) extends horizontally downstream of the water turbine (15), then bends downward, and further extends horizontally downstream of the water turbine (15) at a position directly above the outflow pipe (2). And connected to the upper part of the water discharge pipe (4) connected to the outflow pipe (2) to return the water flow to the water discharge pipe (4).

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

  In the right side in FIG. 2 of the generator (11), a water-cooled jacket (second cooler of both-side cooler) is provided between the generator (11) and the DC / AC converter (21) as in the left side. ) (31) is disposed, and the generator (11) and the DC / AC converter (21) are detachably connected and fixed via the water cooling jacket (31).

  And the cooling pipe (40) connected to the inflow pipe (1) on the upstream side of the water turbine (15) branches to the right side of FIG. 2 near the lower part (I) of the generator, and the water cooling jacket (31 ) Is connected to one end of the cooling water passage upstream of the water turbine (15), the water flow is supplied to the water cooling jacket (31), and the cooling pipe (41) connected to the water discharge pipe (4) At the lower part of the machine (O), it branches to the right in Fig. 2 and is connected to one end of the cooling water passage of the water cooling jacket (31) on the downstream side of the water turbine (15). It returns to the water discharge pipe (4) through the cooling pipe (41).

  Further, a water-cooled rear cover (rotary electric machine cooler) (32) is disposed above the generator (11), and the lower surface thereof is detachably fixed to the upper surface of the generator (11). The water-cooled rear cover (32) is formed to have substantially the same length and width as the same length and width 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 water passage (not shown) inside, and the cooling water passage is disposed, for example, in the vicinity of the coil end of the generator (11). One end opens to the upstream side of the water turbine (15), and the other end opens to the downstream side of the water turbine (15).

  And the cooling pipe (40) connected to the water supply pipe (3) is branched near the lower part of the generator (I) and extends upward, and then bent to the downstream side of the water turbine (15). Connected to one end of the cooling water passage of the water-cooled rear cover (32), the water flow is supplied to the water-cooled rear cover (32), and the cooling pipe (41) connected to the water discharge pipe (4) is also connected to the lower part of the generator. After branching near (O) and extending upward, it bends upstream of the water turbine (15) and is connected to the other end of the cooling water passage of the water cooling rear cover (32), after the water cooling rear cover (32) is distributed. Is returned to the water discharge pipe (4) through the cooling pipe (41).

  Therefore, the cooling pipe (40) connected to the water supply pipe (3) and the cooling pipe (41) connected to the water discharge pipe (4) are both near the lower part of the generator (I) and (O). In FIG. 2, the water flow is branched into three on the left side, right side, and upper side, 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.

  Therefore, in the vertical fluid device of the present embodiment, a part of the water flow in the water supply pipe (3) flows through the cooling pipes (40) and (41) to the water cooling jackets (30) and (31) to generate power. Since the generator (11) is cooled, the generator (11) is water-cooled, and its cooling performance can be improved compared to the case of air cooling. It can be made unnecessary and can be miniaturized.

  Furthermore, since the generator (11) and the water turbine (15) are detachably connected, the generator (11) and the water turbine ( 15) can be separated and maintained, and the maintainability can be improved.

  In addition, the AC / DC converter (20) is cooled by the water cooling jacket (30) and the DC / AC converter (21) is cooled by the water cooling jacket (31). The cooling performance can be improved compared to the above, and the cooling fins and the like in the case of air cooling can be reduced, and the size and weight can be reduced.

  In addition, an AC / DC converter (20) is arranged on the left side of the generator (11) in FIG. 2, and a water cooling jacket (30) is arranged between the generator (11) and the AC / DC converter (20). Therefore, it is possible to cool both the generator (11) and the AC / DC converter (20) satisfactorily with only one water cooling jacket (30).

  Similarly, since the DC / AC converter (21) and the generator (11) arranged on the right side of the generator (11) in FIG. 2 are cooled by the water cooling jacket (31) arranged therebetween, It is possible to cool both the generator (11) and the DC / AC converter (21) satisfactorily with only one water cooling jacket (31).

  Moreover, only the water cooling jackets (30) and (31) are sandwiched between the generator (11) and the AC / DC converter (20) and between the generator (11) and the DC / AC converter (21), respectively. Therefore, the wiring harness between the devices can be reduced, and the wiring can be simplified and the price can be reduced.

  Further, on the side of the generator (11) in FIG. 2, that is, in the horizontal direction perpendicular to the flow direction of the water flow to the water turbine (15), the water cooling jackets (30), (31), the AC / DC converter ( 20) and the DC / AC converter (21) are arranged, so that these devices and water turbines (15) are connected to the inflow pipe (1), the outflow pipe (2) and these during maintenance and maintenance. Maintenance and maintenance of the water supply pipe (3) and water discharge pipe (4) can be easily performed without being obstructed.

  The upper part of the generator (11) is cooled by a water-cooled rear cover (32) arranged in the middle of the cooling pipes (40) and (41), so that the generator (11) is on the left side and the right side. In addition, the upper part is also cooled, and the cooling performance of the generator (11) can be enhanced.

  Furthermore, two water-cooling jackets (30), (31) arranged on the side of the generator (11) and a water-cooling rear cover (32) arranged above the generator (11) are divided into three branched water supply sides. Since the water flow is supplied in parallel by the cooling pipe (40) and the water discharge cooling pipe (41), the resistance of the cooling pipes (40) and (41) can be reduced, and the vertical fluid device can Even when installed at a location with a low head, the generator (11), the AC / DC converter (20), and the DC / AC converter (21) can be satisfactorily cooled.

(Other embodiments)
The present invention may be configured as follows with respect to the above embodiment.

  In the above embodiment, the water turbine (15), the generator (11), the AC / DC converter (20) and the DC / AC converter (21), the two water cooling jackets (30), (31) and the water cooling rear cover (32) are provided. Although the vertical fluid device is detachably integrated, the present invention is not limited to this, and other than, for example, the vertical type in which the water turbine (15) and the generator (11) are arranged in the vertical direction, and the horizontal type. In addition, the DC / AC converter (21) is not arranged on the side of the generator (11), and the DC / AC converter (21) and the water cooling jacket (31) are separately installed. It is possible to adopt a configuration to In addition, the present invention is not limited to the case where the generator (11), the AC / DC converter (20), and the DC / AC converter (21) are all cooled simultaneously, but the AC / DC converter (20) or the DC / AC It can also be applied to the case of cooling only the converter (21). In short, it can also be applied to the case of cooling at least one of the generator (rotary electric machine) (11) and the power conversion control device (20, 21). .

  In the above embodiment, the cooling pipes (40) and (41) are branched into three so that the water flow is supplied in parallel to the two water cooling jackets (30) and (31) and the water cooling rear cover (32). However, when the vertical fluid device is installed at a location with a high head, the water cooling jackets (30), (31) and the water cooling rear cover (32) are not branched without branching the cooling pipes (40), (41). Alternatively, a configuration may be adopted in which a water flow is supplied in series.

  In addition, the rear cover (32) has been described as an example of a cooler for a rotating electrical machine. However, the coil end may be similarly cooled by adopting a front cover (12). Further, the bearing portion included in the rear cover and the front cover may be cooled at the same time.

  Furthermore, in the above embodiment, the first and second power conversion controllers (20) and (21) and the first and second coolers (30) and (31) are connected to the water flow in the water turbine (15). Although arranged on the side of the generator (11) orthogonal to the direction, the present invention is not limited to this, for example, these devices (20), (21), (30), (31) May be arranged on the side of the generator (11) parallel to the direction of water flow in the water turbine (15). In this case, these devices (20), (21), (30), (31) are along the water supply pipe (3) and the water discharge pipe (4) connected to the water turbine (15). The entire fluid device can be made slim and compact.

  In addition, the impeller (10) is arranged at the connection site between the inflow pipe (1) and the outflow pipe (2) to generate a water flow. Of course, the impeller (10) can take the same configuration with respect to other various fluid flows.

  In the above embodiment, the fluid device that generates power by driving the generator (11) by the rotation of the impeller (10) that receives the water flow has been described, but the present invention is not limited thereto, and the generator (11 ) Is replaced with an electric motor, and the water turbine (15) is replaced with a pump, the present invention can be applied to a fluid device that generates a fluid flow by driving the pump by the rotation of the electric motor that receives electric power. In this fluid device, the AC / DC converter (first power conversion control device) 20 converts AC power from a commercial power source (22) into direct current, and the DC / AC converter (second power conversion control device). ) 21 converts the direct current converted by the AC / DC converter into a three-phase alternating current, and supplies the three-phase alternating current to the motor.

  As described above, the present invention removes the fluid machine of the water turbine or the pump, the rotary electric machine, and the power conversion control device while improving the cooling performance of the rotary electric machine or the power conversion control device of the generator or motor. Since it is connected and miniaturized to improve the maintenance and maintainability thereof, it is useful when applied to a fluid device including a water turbine and a generator and a fluid device including a pump and an electric motor.

DESCRIPTION OF SYMBOLS 1 Inflow pipe 2 Outflow pipe 3 Water supply piping 4 Water discharge piping 10 Impeller 10a Rotating shaft 10c Blade 11 Generator (rotating electric machine)
12 Front cover 15 Turbine (hydraulic machine)
20 AC / DC converter (first power conversion control device)
21 DC / AC converter (second power conversion control device)
30 Water-cooled jacket (both coolers, first cooler)
31 Water-cooled jacket (both coolers, second cooler)
32 Water-cooled rear cover (cooler for rotating electrical machines)
40, 41 Cooling piping

Claims (5)

In a fluid device comprising a hydraulic machine (15) and a rotating electrical machine (11) connected to the hydraulic machine (15),
Cooling pipes (40, 41) for flowing fluid by bypassing the upstream side and the downstream side of the hydraulic machine (15);
A cooler (30, 31) that is disposed in the middle of the cooling pipe (40, 41) and uses a fluid flowing through the cooling pipe (40, 41) for liquid cooling,
The hydraulic machine (15) and the rotary electric machine (11) are detachably connected,
Furthermore, a power conversion control device (20, 21) is provided,
The cooler (30, 31)
The rotary electric machine (11) and the power conversion control device (20, 21) are disposed between the rotary electric machine (11) and the electric power by the fluid flowing through the cooling pipe (40, 41). A both-side cooler (30, 31) that cools both the conversion control device (20, 21),
The power conversion control device (20, 21)
A first power conversion control device (20) for converting or controlling power obtained from the rotating electrical machine (11) or power from a power source;
A second power conversion control device (21) for further converting or controlling the power converted or controlled by the first power conversion control device (20),
The two side coolers (30, 31)
A first cooler (30) disposed between the rotating electric machine (11) and the first power conversion control device (20);
A fluid device comprising: a second cooler (30) disposed between the rotating electric machine (11) and the second power conversion control device (21). The fluidic device of claim 1 , wherein
The cooling pipe (40, 41) is supplied with fluid, and includes a rotating electric machine cooler (32) for cooling the rotating electric machine (11),
The rotating electrical machine cooler (32)
The fluid apparatus, wherein the fluid device is located at an end portion of the rotating electrical machine (11) other than the end portion where the first cooler (30) and the second cooler (31) are located. The fluidic device of claim 2 , wherein
The rotating electrical machine (11) is located above the hydraulic machine (15),
The first and second power conversion control devices (21) and the first and second coolers (30) and (31) are orthogonal to the direction of fluid flow in the hydraulic machine (15). Located on the side of the rotating electrical machine (11),
The cooling device for a rotating electric machine (32) is located above the rotating electric machine (11). The fluidic device of claim 2 , wherein
The rotating electrical machine (11) is located above the hydraulic machine (15),
The first and second power conversion control devices (21) and the first and second coolers (30) and (31) are parallel to the fluid flow direction in the hydraulic machine (15). Located on the side of the rotating electrical machine (11)
The cooling device for a rotating electric machine (32) is located above the rotating electric machine (11). In the fluid apparatus according to any one of claims 2 to 4 ,
The cooling pipes (40, 41) are arranged in parallel with the first cooler (30), the second cooler (31) and the cooler for rotating electric machine (32) of the both coolers (30, 31). A fluid device characterized by branching.

Images