WO2014115208A1 - 流体装置 - Google Patents
流体装置 Download PDFInfo
- Publication number
- WO2014115208A1 WO2014115208A1 PCT/JP2013/006824 JP2013006824W WO2014115208A1 WO 2014115208 A1 WO2014115208 A1 WO 2014115208A1 JP 2013006824 W JP2013006824 W JP 2013006824W WO 2014115208 A1 WO2014115208 A1 WO 2014115208A1
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- WO
- WIPO (PCT)
- Prior art keywords
- fluid
- cooling
- water
- pipe
- cooler
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/5813—Cooling the control unit
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/0686—Mechanical details of the pump control unit
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
- F04D29/4293—Details of fluid inlet or outlet
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/5806—Cooling the drive system
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
- H02K5/203—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium specially adapted for liquids, e.g. cooling jackets
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
- H02K7/1807—Rotary generators
- H02K7/1823—Rotary generators structurally associated with turbines or similar engines
Definitions
- the present invention relates to an improvement of a fluid device including a hydraulic machine such as a water wheel or a pump and a rotating electric machine such as a generator or an electric motor, and more particularly to a measure for improving the maintainability of the device.
- 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 driven to rotate, and the rotating shaft of the generator is driven to rotate by the rotation of the water wheel to generate power, and the water flow that flows into the casing
- Patent Document 1 discloses that a hydroelectric generator including a water turbine and a generator is a water-cooled generator.
- 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 power conversion control device such as an inverter for controlling the electric motor.
- 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.
- the electric power conversion control device such as an electric motor and an inverter arranged on the side of the pump system is air-cooled. Therefore, the cooling performance of such devices is low and there is a disadvantage that the size is increased.
- 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.
- the fluid device 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). ) Of the cooling pipe (40, 41) for flowing the fluid bypassing the upstream side and the downstream side, and the fluid that is arranged in the middle of the cooling pipe (40, 41) and flows through the cooling pipe (40, 41)
- the hydropower machine (15) and the rotary electric machine (11) are detachably connected to each other.
- the fluid flows through the cooling pipe to the cooler, and the cooler can cool, for example, the rotating electrical machine and the power conversion control device. Therefore, the rotating electrical machine and the power conversion control device are liquid-cooled. As a formula, the cooling performance is enhanced and the size is reduced.
- the present invention includes a power conversion control device (20, 21), and the cooler (30, 31) includes the rotating electric machine (11) and the power conversion control device (20, 21).
- a both-side cooler (30, 30) that cools both the rotating electrical machine (11) and the power conversion control device (20, 21) with a fluid that is interposed between them and flows through the cooling pipe (40, 41). , 31).
- the rotary electric machine and the power conversion control device are located on both sides of the both coolers, the rotary electric machine and the power conversion control device are simultaneously cooled by this single cooler.
- 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.
- the present invention provides the fluid power device, wherein the power conversion control device (20, 21) converts or controls power obtained from the rotating electrical machine (11) or power from a power source. (20) and 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).
- 31) includes a first cooler (30) disposed between the rotating electric machine (11) and the first power conversion control device (20), and the rotating electric machine (11). And a second cooler (30) disposed between the second power conversion control device (21) and the second power conversion control device (21).
- 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. However, 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, and construction and maintenance can be simplified.
- the present invention includes the above-described fluid device, including 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 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.
- the cooling performance of the rotary electric machine is further improved.
- the rotating electrical machine (11) is located above the hydraulic machine (15), and the first and second power conversion controllers (20), (21) and the first 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 rotating electric machine The cooling device (32) is located above the rotating electric machine (11).
- the arrangement positions of the first and second power conversion control devices and the first and second coolers are specified, and these are the fluid circulation in the hydraulic machine among the sides of the rotary electric machine. Since it is arranged on the side perpendicular to the direction, it is not obstructed by the fluid inflow and outflow pipes connected to the hydraulic machine during maintenance and maintenance of these rotary electric machines and power conversion control devices. Maintenance and maintenance can be performed easily. 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.
- the rotating electrical machine (11) is located above the hydraulic machine (15), and the first and second power conversion controllers (20), (21) and the first The first and second coolers (30) and (31) are located on the side of the rotating electric machine (11) parallel to the fluid flow direction in the hydraulic machine (15), and the rotating electric machine The mechanical cooler (32) is located above the rotating electric machine (11).
- the arrangement positions of the first and second power conversion control devices and the first and second coolers are specified, and these are the fluid circulation in the hydraulic machine among the sides of the rotary electric machine. Since 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 fluid device is disposed on the side parallel to the direction. Overall slimming and compactness are possible.
- the cooling pipe (40, 41) includes a first cooler (30), a second cooler (31), and a rotary electric machine of the double cooler (30, 31). Branching in parallel to the cooling device (32).
- the first cooler, the second cooler, and the rotary electric machine cooler of both coolers are connected in parallel to the cooling pipe, so that the resistance of fluid supply in the cooling pipe is reduced. 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.
- 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 detachably connect the rotating electric machine and perform maintenance and maintenance of the hydraulic machine and the rotating electric machine easily and in a short time.
- the fluid device as a whole can be reduced in size and weight while the cooling system of the rotating electrical machine and the power conversion control device is one system. Maintenance can be simplified.
- the entire fluid device including these devices can be simplified by simplifying the cooling system of the rotary electric machine and the power conversion control devices thereof. Can be reduced in size, weight, cost, space saving, construction and maintenance.
- the rotating electrical machine can be cooled by the three coolers, and the cooling performance of the rotating electrical machine can be further improved.
- maintenance and maintenance of a rotating electrical machine and a power conversion control device can be easily performed without being disturbed by an inflow pipe or an outflow pipe of a fluid connected to the hydraulic machine.
- the power conversion control device and its cooler are aligned with the fluid flow direction of the hydraulic machine, the fluid device as a whole can be slimmed and made compact.
- the rotating electrical machine and the plurality of power conversion control devices can be provided even when the fluid device is disposed in a fluid path with a small head or when the capacity of the pump provided is small. It can cool 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.
- FIG. 4A is a front view of the cooling fluid take-out device according to the first embodiment, and FIG. 4B is a side sectional view of the same.
- FIG. 5A is a front view of the cooling fluid return device according to the first embodiment, and FIG. 5B is a side sectional view thereof.
- FIG. 6 (a) is a front view of the cooling fluid take-out device in which the water intake port is arranged at the center of the flange pipe, and
- FIG. 6 (b) is a side sectional view of the same.
- FIG. 7A is a front view of the cooling fluid return device in which the discharge port is arranged at the center of the flange pipe
- FIG. 7B is a side sectional view thereof.
- FIG. 8A is a front view of a cooling fluid take-out device according to Modification 1
- FIG. 8B is a side sectional view of the same.
- FIG. 9A is a front view of a cooling fluid take-out device in which the water intake port is arranged at the center of the flange pipe in Modification 1
- FIG. 9B is a side cross-sectional view thereof.
- FIG. 10A is a front view of a cooling fluid take-out device according to Modification 2
- FIG. 10B is a side cross-sectional view thereof.
- FIG. 11A is a front view of a cooling fluid return device when the cooling fluid extraction device according to Modification 2 is used as a cooling fluid return device
- FIG. FIG. 12A is a front view of a cooling fluid take-out device according to Modification 3
- FIG. 12B is a side cross-sectional view thereof
- FIG. 13A is a front view of a cooling fluid take-out device in which the water intake port is offset from the center of the flange pipe in Modification 3
- FIG. 13B is a side cross-sectional view thereof.
- FIG. 14A is a front view of a cooling fluid take-out device according to Modification 4, and FIG. 14B is a side sectional view thereof.
- FIG. 15A is a front view of a cooling fluid take-out device in which the water intake port is offset from the center of the flange pipe in the modified example 4, and FIG. 15B is a side cross-sectional view thereof.
- 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.
- FIG. 1 shows a schematic front view of a hydroelectric power generation system (500) according to Embodiment 1 of the present invention
- FIG. 2 shows a schematic side view of the hydroelectric power generation system (500).
- (1) is a water flow inflow pipe
- (2) is a water flow outflow pipe
- the hydroelectric power generation system (500) includes the inflow pipe (1) and the outflow pipe (2).
- a cooling fluid take-out device (100) is connected to the inflow pipe (1)
- a cooling fluid return device (200) is connected to the outflow pipe (2).
- a casing (14) containing the impeller (10) shown in FIG. 3 is arranged.
- the impeller (10) is connected to the lower end of a rotating shaft (10a) arranged in the vertical direction, and a plurality of blades (10c) are connected to the central portion (10b) to which the rotating 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 pipe (1) to rotate the rotating shaft (10a).
- an impeller provided in a spiral pump is used for this impeller (10).
- the impeller (10) having the inflow pipe (1), the outflow pipe (2), the rotation shaft (10a), and a hollow base (13) surrounding the rotation shaft (10a) of the impeller (10) ) And the casing (14) constitute a water turbine (hydraulic machine) (15) that receives the water flow and rotationally drives the rotating shaft (10a).
- a generator (rotating electric machine) (11) connected to the upper end of the rotating shaft (10a) arranged in the vertical direction is arranged.
- This generator (11) The front cover (12) arranged below the wheel and the hollow pedestal (13) surrounding the rotating shaft (10a) of the water turbine (15) are fastened by fasteners such as bolts, and the water turbine (15) and the power generation
- the machine (11) is detachably connected and fixed, and the fluid device is a vertical type in which a water turbine (15) and a 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.
- 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.
- 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.
- 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.
- the second power conversion control device (21) converts the DC power converted by the AC / DC converter exemplified above into AC power to return to the commercial power source (22), for example.
- 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 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).
- 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 ( 20) and (21) may be plural.
- the cooling fluid take-out device (100) connected to the upstream flow path of the water turbine (15), that is, the inflow pipe (1) is connected to the water wheel (15) from the cooling fluid take-out device (100).
- a cooling fluid pipe (40) into which water (an example of a cooling fluid) from which a part of the bypassed water flows 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).
- 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 to the downstream side of the water turbine (15) via the cooling fluid pipe (41). Returned.
- a water cooling jacket (second cooler of both-side cooler) is provided between the generator (11) and the DC / AC converter (21). ) (31) is disposed, and the generator (11) and the DC / AC converter (21) are detachably connected and fixed via the water cooling jacket (31).
- a cooling fluid pipe (41) connected to the upstream end of the cooling fluid passage of the jacket (31) is supplied to the water cooling jacket (31) and connected to the cooling fluid return device (200).
- a water-cooled rear cover (cooler for rotating electrical machine) (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.
- 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 near the lower part of the generator (I) and extends upward, and then bends downstream of the water turbine (15).
- the cooling water pipe (41) connected to one end of the cooling water 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).
- the water turbine (15) is bent upstream and connected to the other end of the cooling water passage of the water cooling rear cover (32). 32)
- the water flow after distribution is returned to the cooling fluid return device (200) through the cooling fluid pipe (41).
- 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), In (O), the water flow branches into the left side, the right side, and the upper side in FIG. 2, and the 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.
- the cooling water (an example of the 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).
- 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.
- 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.
- 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 satisfactorily cool both the generator (11) and the AC / DC converter (20) with only one water cooling jacket (30).
- the generator (11) since the upper part of the generator (11) is cooled by a water-cooled rear cover (32) disposed in the middle of the cooling fluid pipes (40) and (41), the generator (11) has its left side and right side. In addition to this, the upper part is also cooled, so that the cooling performance of the generator (11) can be improved.
- 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) have three branched water supply sides. Since the water flow is supplied in parallel by the cooling fluid piping (40) and the cooling fluid piping (41) for discharging water, the resistance of these cooling fluid piping (40) and (41) can be reduced, and the vertical type Even when the hydroelectric power generation system (500) is installed at a low head, the generator (11), AC / DC converter (20) and DC / AC converter (21) can be cooled well. It is.
- FIG. 4 shows the cooling fluid extraction device (100) according to the first embodiment.
- FIG. 4A is a front view
- FIG. 4B 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 a pipe joint.
- 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.
- the suction pipe (103) has a cone part (104) covered with a rectifying member (105).
- 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 is provided in order not to become.
- the rectifying member (105) is near the portion (bent portion) where the suction pipe (103) is bent from one end of the suction pipe (103) on the cone portion (104) side. And a substantially spherical portion formed on the right side (right side in FIG. 4B) 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 (b)).
- the suction pipe (103) (cone part (104)) and the rectifying member (105) constitute an example of the dynamic pressure acting part.
- flanges are fastened with a cooling fluid extraction device (100) and an inflow pipe (1).
- the cooling fluid take-out device (100) is configured so that the intake port (106) of the suction pipe (103) faces the side opposite to the water turbine (15) of the inflow pipe (1), 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). *
- 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).
- the flange pipe (4) is an example of a pipe joint.
- 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. 5 (b).
- the discharge pipe (203) and the rectifying member (205) constitute an example of a dynamic pressure acting part.
- flanges are fastened with a cooling fluid return device (200) and an outflow pipe (2).
- 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).
- an AC / DC converter (20), a DC / AC converter (21), etc. are cooled favorably.
- the cooling water which passed the water cooling jacket (30, 31) and the water cooling rear cover (32) flows into cooling fluid piping (41).
- 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).
- the cooling water in the cooling fluid pipe (41) is discharged into the cooling fluid return device (200).
- the cooling water circulates and the AC / DC converter (20) and the DC / AC converter (21) are water-cooled satisfactorily.
- 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).
- the generator (11) rotary electric machine
- electrical components for example, AC / DC converter (20) and DC / AC
- the converter (21) can be easily water-cooled.
- 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.
- 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.
- the intake port (106) and the discharge port (206) are arranged at the center of the flange pipe (3,4). It is an example.
- FIGS. 8A and 8B show a cooling fluid take-out device (100) according to the first modification. That is, the pipe member is bent in an L shape, and the suction pipe (103) whose one end is processed into a cone shape having a larger diameter 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.
- 9 (a) and 9 (b) are examples in which the water intake (106) is arranged in the first modification so as to be the center of the flange pipe (3,4).
- FIGS. 10A and 10B show a cooling fluid extraction device (100) according to the second modification.
- 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.
- the pocket portion (107) and the suction pipe (103) constitute an example of the dynamic pressure acting portion.
- the cooling fluid extraction device (100) can also be used as the cooling fluid return device (200).
- FIGS. 11A and 11B show 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).
- 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.
- FIGS. 12A and 12B show a cooling fluid extraction device (100) according to the third modification.
- 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).
- the water intake (106) is arrange
- FIGS. 13A and 13B are examples 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).
- the opening (intake port (106)) of the suction pipe (103) is directed downstream.
- FIGS. 14A and 14B show a cooling fluid extraction device (100) according to the fourth modification.
- 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.
- the water intake (106) is arrange
- 15A and 15B are examples in which the water intake port (106) is offset from the center of the flange pipe (3) in the fourth modification.
- FIGS. 16A and 16B are longitudinal sectional views of the hydroelectric power generation system 500 according to the second embodiment.
- a generator (11) and a water turbine (15) are incorporated in a pipe (main pipe (400)).
- 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.
- FIGS. 16A and 16B are examples using the cooling fluid take-out device (100) and the cooling fluid return device (200) of the first embodiment.
- 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.
- FIGS. 17A and 17B are examples 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.
- the present invention may be configured as follows with respect to 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.
- the vertical fluid device is detachably integrated, the present invention is not limited to this.
- the vertical fluid device is not a vertical type in which the water turbine (15) and the generator (11) are arranged in the vertical direction.
- the DC / AC converter (21) and the water cooling jacket (31) are separated from each other without arranging the DC / AC converter (21) on the side of the generator (11).
- 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 at the same time, 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). .
- the cooling fluid piping (40) and (41) are branched into three, and the water flow is supplied in parallel to the two water cooling jackets (30) and (31) and the water cooling rear cover (32).
- the vertical fluid device is installed in a place with a high head, water cooling jackets (30), (31) and water cooling rear cover ( A configuration may be adopted in which the water flow is supplied in series to 32).
- rear cover (32) is taken as an example of a cooler for a rotating electrical machine
- a front cover (12) may be adopted to similarly cool the coil end.
- the bearing portion included in the rear cover and the front cover may be cooled at the same time.
- 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).
- 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).
- 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.
- the impeller (10) is arranged at the connection site between the inflow pipe (1) and the outflow pipe (2) to generate a water flow.
- a water flow For example, it may be a brine or the like, and the impeller (10) can of course have the same configuration with respect to other various fluid flows.
- 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 to this, 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.
- the AC / DC converter (first power conversion control device) 20 converts AC power from a commercial power source (22) into direct current
- 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.
- cooling fluid take-out device (100) and the cooling fluid return device (200) described in the first embodiment and the modifications thereof is arbitrary.
- 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.
- the cooling fluid take-out device (100) and the cooling fluid return device (200) include, in addition to the hydroelectric power generation system, 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.
- the cooling fluid return device (200) is connected to the pump inlet side and the cooling fluid is supplied to the pump outlet A take-out device (100) is provided.
- 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) from 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 object to be cooled by the cooling fluid is not limited to the rotating electrical machine (11) and the power conversion control device (20, 21).
- the flange pipe (3,4) is an example of a pipe joint.
- a so-called wafer type pipe joint may be adopted.
- 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.
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Abstract
Description
本発明の流体装置の一例として水力発電システムを説明する。図1は、本発明の実施形態1に係る水力発電システム(500)の概略正面図を示し、図2は、同水力発電システム(500)の概略側面図を示す。
従って、本実施形態の立型流体装置では、流入管(1)の水流の一部が冷却流体配管(40)、(41)を介して水冷ジャケット(30)、(31)に流通して発電機(11)が冷却されるので、この発電機(11)を水冷式として、風冷の場合に比してその冷却性能を高めることが可能であると共に、外扇ファンやそのファンカバー等を不要にできて小型化を図ることが可能である。
図4は、実施形態1に係る冷却流体取出し装置(100)を示す。図4(a)は正面図、同図(b)は側面断面図である(以下同様)。冷却流体取出し装置(100)は、両端にフランジが設けられたフランジ配管(3)と、フランジ配管(3)内の流体を冷却流体として取出す吸入管(103)とを備えている。フランジ配管(3)は、管継手の一例である。
図5(a)及び(b)は、実施形態1に係る冷却流体戻し装置(200)を示す。冷却流体戻し装置(200)は、両端にフランジが設けられたフランジ配管(4)と、AC/DCコンバータ(20)等の冷却に使用された冷却水をフランジ配管(4)内に戻す排出管(203)とを備えている。フランジ配管(4)は、管継手の一例である。
本実施形態では、冷却流体取出し装置(100)内に水流が供給されると、その水流は流入管(1)を経由して水車(15)に供給される。さらに冷却流体取出し装置(100)では、水流による動圧が吸入管(103)の取水口(106)に作用する(図4(b)等では水流の向きを矢印で示してある。以下同様)。その結果、冷却流体取出し装置(100)内の水は、吸入管(103)から冷却流体配管(40)を経由して、それぞれの水冷ジャケット(30,31)、及び水冷リアカバー(32)に冷却水として供給される。これにより、AC/DCコンバータ(20)及びDC/ACコンバータ(21)などが良好に冷却される。そして、水冷ジャケット(30,31)や水冷リアカバー(32)を通過した冷却水は、冷却流体配管(41)に流入する。冷却流体戻し装置(200)では、排出管(203)の排出口(206)が水流の下流を向いているので、水車(15)からの排水の水流によって、排出管(203)内部の水(冷却水)が排出口(206)から吸いだされる。その結果、冷却流体配管(41)内の冷却水が冷却流体戻し装置(200)内に排出される。以上のように、本実施形態では、冷却水が循環して、AC/DCコンバータ(20)やDC/ACコンバータ(21)が良好に水冷される。
図8(a)及び(b)は、変形例1に係る冷却流体取出し装置(100)を示す。すなわち、配管部材をL字状に屈曲して、その一端を端側がより大きな径となるコーン状に加工した吸入管(103)をフランジ配管(3)に接続したものである。この吸入管(103)も、直状の管を拡管することで製造できるので、低コストで冷却流体取出し装置(100)を製造できる。また、この冷却流体取出し装置(100)は、流出管(2)に接続して冷却流体戻し装置(200)として使用することもできる。冷却流体戻し装置(200)として使用する場合には、吸入管(103)の開口(取水口(106))を下流側に向ける。
図10(a)及び(b)は、変形例2に係る冷却流体取出し装置(100)を示す。この例では、フランジ配管(3)の内周面にポケット部(107)を形成し、ポケット部(107)内の空間と連通するように吸入管(103)を接続してある。ポケット部(107)の開口が取水口(106)である。また、吸入管(103)は、同図の例ではストレートの配管である。この例でも、取水口(106)が上流に向くように冷却流体取出し装置(100)を配置することで、動圧によって冷却水を取り入れることが可能になる。この例では、ポケット部(107)と吸入管(103)とで動圧作用部の一例を構成している。
図12(a)及び(b)は、変形例3に係る冷却流体取出し装置(100)を示す。この例では、冷却流体取出し装置(100)は、配管部材をL字状に屈曲して形成した吸入管(103)をフランジ配管(3)に固定して形成してある。また、取水口(106)は、フランジ配管(3,4)の中心となるように配置してある。この形態は加工が容易であり、低コストでの製造が期待できる。そして、この例でも、取水口(106)が上流に向くように冷却流体取出し装置(100)を配置することで、動圧によって冷却水を取り入れることが可能になる。
図14(a)及び(b)は、変形例4に係る冷却流体取出し装置(100)を示す。この例では、冷却流体取出し装置(100)は、配管部材の先端を斜めに切り落として、注射針の先端のように加工した吸入管(103)をフランジ配管(3)に固定して形成してある。また、取水口(106)は、フランジ配管(3,4)の中心となるように配置してある。そして、この例でも、取水口(106)が上流に向くように冷却流体取出し装置(100)を配置することで、動圧によって冷却水を取り入れることが可能になる。なお、図15(a)及び(b)は、変形例4において取水口(106)がフランジ配管(3)の中心からオフセットした例である。
図16(a)及び(b)は、実施形態2に係る水力発電システム(500)の縦断面図である。この例では、配管(本体管(400))の中に発電機(11)と水車(15)が組み込まれている。このような構成の水力発電システム(500)においても、実施形態1やその変形例で示した冷却流体取出し装置(100)や冷却流体戻し装置(200)を使用できる。図16(a)及び(b)は、実施形態1の冷却流体取出し装置(100)及び冷却流体戻し装置(200)を用いた例である。
本発明は、上記実施形態について、以下のような構成としてもよい。
2 流出管
10 羽根車
10a 回転軸
10c ブレード
11 発電機(回転電気機械)
12 フロントカバー
15 水車(水力機械)
20 AC/DCコンバータ(第1の電力変換制御装置)
21 DC/ACコンバータ(第2の電力変換制御装置)
30 水冷ジャケット(双方冷却器、第1の冷却器)
31 水冷ジャケット(双方冷却器、第2の冷却器)
32 水冷リアカバー(回転電気機械用冷却器)
40、41 冷却配管
100 冷却流体取出し装置
103 吸入管(動圧作用部)
200 冷却流体戻し装置
203 排出管
500 水力発電システム(流体装置)
Claims (7)
- 水力機械(15)と、上記水力機械(15)に連結された回転電気機械(11)とを備えた流体装置において、
上記水力機械(15)の上流側と下流側とをバイパスして流体を流す冷却配管(40,41)と、
上記冷却配管(40,41)の途中に配置され、上記冷却配管(40,41)を流通する流体を液冷に用いる冷却器(30,31)とを備え、
上記水力機械(15)と上記回転電気機械(11)とは、取り外し可能に連結されている
ことを特徴とする流体装置。 - 上記請求項1記載の流体装置において、
電力変換制御装置(20,21)を備え、
上記冷却器(30,31)は、
上記回転電気機械(11)と上記電力変換制御装置(20,21)との間に挟まれて配置され、上記冷却配管(40,41)を流通する流体により上記回転電気機械(11)と電力変換制御装置(20,21)との双方を冷却する双方冷却器(30,31)である
ことを特徴とする流体装置。 - 上記請求項2記載の流体装置において、
上記電力変換制御装置(20,21)は、
上記回転電気機械(11)で得られた電力又は電源からの電力を変換又は制御する第1の電力変換制御装置(20)と、
上記第1の電力変換制御装置(20)で変換又は制御された電力を更に変換又は制御する第2の電力変換制御装置(21)とを備え、
上記双方冷却器(30,31)は、
上記回転電気機械(11)と上記第1の電力変換制御装置(20)との間に挟まれて配置された第1の冷却器(30)と、
上記回転電気機械(11)と上記第2の電力変換制御装置(21)との間に挟まれて配置された第2の冷却器(30)とを備える
ことを特徴とする流体装置。 - 上記請求項3記載の流体装置において、
上記冷却配管(40,41)の流体が供給され、上記回転電気機械(11)を冷却する回転電気機械用冷却器(32)を備え、
上記回転電気機械用冷却器(32)は、
上記回転電気機械(11)の端部のうち上記第1の冷却器(30)及び第2の冷却器(31)が位置する端部以外の端部に位置する
ことを特徴とする流体装置。 - 上記請求項4記載の流体装置において、
上記回転電気機械(11)は上記水力機械(15)の上方に位置し、
上記第1及び第2の電力変換制御装置、(21)並びに上記第1及び第2の冷却器(30)、(31)は、上記水力機械(15)での流体の流通方向とは直交する上記回転電気機械(11)の側方に位置し、
上記回転電気機械用冷却器(32)は上記回転電気機械(11)の上方に位置する
ことを特徴とする流体装置。 - 上記請求項4記載の流体装置において、
上記回転電気機械(11)は上記水力機械(15)の上方に位置し、
上記第1及び第2の電力変換制御装置、(21)並びに上記第1及び第2の冷却器(30)、(31)は、上記水力機械(15)での流体の流通方向とは平行となる上記回転電気機械(11)の側方に位置し、
上記回転電気機械用冷却器(32)は上記回転電気機械(11)の上方に位置する
ことを特徴とする流体装置。 - 上記請求項4~6の何れか1項に記載の流体装置において、
上記冷却配管(40,41)は、上記双方冷却器(30,31)の第1の冷却器(30)、第2の冷却器(31)及び回転電気機械用冷却器(32)に並列に分岐する
ことを特徴とする流体装置。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
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EP13872571.8A EP2950429B1 (en) | 2013-01-25 | 2013-11-20 | Fluid device |
US14/762,728 US10233942B2 (en) | 2013-01-25 | 2013-11-20 | Fluid device |
ES13872571T ES2868892T3 (es) | 2013-01-25 | 2013-11-20 | Dispositivo de fluido |
CN201380070939.9A CN104937821A (zh) | 2013-01-25 | 2013-11-20 | 流体装置 |
AU2013374847A AU2013374847A1 (en) | 2013-01-25 | 2013-11-20 | Fluid device |
AU2016266086A AU2016266086B2 (en) | 2013-01-25 | 2016-12-02 | Fluid device |
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JP2013012578A JP5573983B2 (ja) | 2013-01-25 | 2013-01-25 | 流体装置 |
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JP2013-012537 | 2013-01-25 | ||
JP2013012537A JP5573982B2 (ja) | 2013-01-25 | 2013-01-25 | 冷却流体取出し装置、冷却流体戻し装置、及び流体装置 |
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EP (1) | EP2950429B1 (ja) |
CN (1) | CN104937821A (ja) |
AU (2) | AU2013374847A1 (ja) |
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Also Published As
Publication number | Publication date |
---|---|
AU2013374847A1 (en) | 2015-08-06 |
AU2016266086A1 (en) | 2016-12-22 |
US10233942B2 (en) | 2019-03-19 |
AU2016266086B2 (en) | 2018-08-16 |
EP2950429A4 (en) | 2016-09-21 |
US20150369258A1 (en) | 2015-12-24 |
EP2950429A1 (en) | 2015-12-02 |
ES2868892T3 (es) | 2021-10-22 |
EP2950429B1 (en) | 2021-03-10 |
CN104937821A (zh) | 2015-09-23 |
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