WO2007138968A1

WO2007138968A1 - Hydroelectric power generator

Info

Publication number: WO2007138968A1
Application number: PCT/JP2007/060581
Authority: WO
Inventors: Shogo Tanaka; Yukinobu Yumita; Shinichi Yoshikawa
Original assignee: Nidec Sankyo Corporation
Priority date: 2006-05-30
Filing date: 2007-05-24
Publication date: 2007-12-06
Also published as: JP2007321809A; JP4825054B2

Abstract

A hydroelectric power generator where a valve mechanism for opening and closing a bypass flow path operates smoothly. In the hydroelectric power generator (1), bypass openings (38) are formed in a separation wall (219), the valve mechanism (9) having a valve body (90) is formed at the center of the openings (38), and a shaft (902) of the valve body (90) penetrates a tube (217) projecting from the separation wall (219). In the valve mechanism (9), a support mechanism (99) is constructed from the tube (217) and the shaft (902). The length over which the tube (217) and the shaft (902) are fitted to each other is kept long even if relative positions of the tube (217) and the shaft (902) vary as the valve body (90) moves, so that the valve body (90) can be stably supported independent of its position.

Description

Hydroelectric generator

Technical field

[0001] The present invention relates to a hydroelectric power generation apparatus that generates power using tap water or the like.

Background art

[0002] An automatic water faucet device configured to automatically flow water from a faucet when a sensor is sensed when a hand is put out below the faucet is becoming widespread. In addition, a small hydroelectric generator is installed in the middle of the tap water flow path, and the device that stores the electric power obtained by the hydroelectric generator and supplies this electric power to the sensor circuit of the automatic water faucet has been devised. ing.

[0003] Such a hydroelectric power generation apparatus has a problem in that, when the amount of water supplied to the turbine chamber increases, the rotation speed of the turbine becomes too high and rattling. Therefore, a first flow path for power generation provided with a water turbine chamber in which a water turbine for power generation is arranged, and a second flow path for bypass configured in parallel to the water turbine room are configured, and a valve mechanism Therefore, it is proposed that when the fluid pressure rises, the second flow path is switched to the open state (see, for example, Patent Document 1).

For example, as shown in FIG. 9, such a valve mechanism opens and closes a partition wall 219 ”having an opening 38〃 constituting a second flow path for bypass and an opening 38〃. And a shaft portion 97 that supports the valve body 90 so as to be displaceable in the direction approaching and separating from the partition wall 219 "by fitting the valve body 90〃 on the distal end side into a hole 98 formed in the valve body ₉₀ , And a coil panel 95〃 that urges the valve body in a direction to close the opening 38〃 against the fluid pressure.

Patent Document 1: Japanese Unexamined Patent Publication No. 2003-129930

Disclosure of the invention

Problems to be solved by the invention

[0005] However, in the valve mechanism as shown in Fig. 9, the shaft portion 97〃 is only slightly fitted into the hole 98〃 of the valve body 90〃 with the valve body 90 blocking the opening 38. Because the valve body 90 If such a tilt occurs immediately, the opening 38〃 cannot be opened and closed smoothly.

[0006] In view of the above problems, an object of the present invention is to provide a hydraulic power generation apparatus in which a valve mechanism that opens and closes a bypass flow path can smoothly open and close.

Means for solving the problem

[0007] In order to solve the above-described problem, in the present invention, a first flow path for power generation including a water turbine chamber in which a power generation water turbine is arranged, and a bypass configuration configured in parallel to the water turbine chamber In the hydroelectric generator having the second flow path and a valve mechanism that switches the second flow path from the closed state to the open state when the fluid pressure rises, the valve mechanism includes the second flow path. A partition wall having an opening constituting the valve, a valve body for opening and closing the opening, a support mechanism for supporting the valve body so as to be displaceable in a direction approaching and separating from the partition wall, and a fluid pressure. And a biasing member that biases the valve body in a direction to close the opening, and the support mechanism includes a shaft portion formed on one side of the valve body and the partition wall, Even when the relative position of the shaft portion changes, the receiving portion has a constant support dimension between the shaft portion and the shaft portion. Characterized in that it comprises a. In the present invention, the receiving part is, for example, a cylindrical part through which the shaft part passes.

[0008] In the present invention, the support mechanism for the valve body is constituted by the shaft portion and a receiving portion such as a cylindrical portion through which the shaft portion passes, so that the support dimension is long. For this reason, the valve body can be supported in a stable posture. Further, in the support mechanism, even if the relative position of the shaft portion and the receiving portion changes with the movement of the valve body, the support dimension does not change and remains long. The body can be supported in a stable state, and the valve body moves smoothly. Therefore, the bypass channel can be smoothly opened and closed according to the set fluid pressure.

In the present invention, the opening is formed around a position where the receiving portion or the shaft portion is formed with respect to the partition wall.

[0010] In the present invention, the shaft portion is formed in the valve body, and the receiving portion projects a surface force located on the upstream side in the second flow path of both surfaces of the partition wall. Can be adopted. Further, the receiving portion is formed on the valve body, and the shaft portion is formed on the partition. Of the both surfaces of the wall, a configuration in which the surface force located on the downstream side in the second flow path protrudes may be employed.

In the present invention, one of the contact surface of the valve body with the partition wall and the contact surface of the partition wall with the valve body is made of fluorine rubber or fluorine resin. It is desirable that the surface of the sealing member be provided with fine irregularities! With this configuration, even when a chemically stable fluorine rubber or fluorine resin is used as the seal member, it is possible to avoid a situation in which the valve body does not come out of contact with the partition wall.

In the present invention, the contact surface of the valve body with the partition wall and the contact surface of the partition wall with the valve body, the other contact surface may be a smooth surface. preferable. If the situation where the valve body and the partition wall cannot be separated from each other can be avoided, the contact surface on the other side can be formed as a smooth surface, so that fluid leakage can be reliably prevented.

In the present invention, the urging member is a coil panel, and a positioning portion for a stopper that supports one end of the coil is formed at a tip portion of the shaft portion. I hope.

[0014] Further, another aspect of the present invention provides a first power generation passage having a water turbine chamber in which a power generation turbine is disposed, and a second bypass passage configured in parallel to the water turbine chamber. In the hydroelectric generator having a flow path and a valve mechanism that switches the second flow path to a closed state force open state when the fluid pressure rises, the valve mechanism constitutes the second flow path. A partition wall provided with a plurality of openings, a valve body for opening and closing the opening, a support mechanism for supporting the valve body so as to be displaceable in a direction approaching and separating from the partition wall, and a pile of fluid pressure. And a biasing member that biases the valve body in a direction to close the opening, and the support mechanism is a partition wall having the plurality of openings, and is sandwiched by the plurality of openings. It is formed to support the valve body at a position.

[0015] According to the present invention, the support mechanism that supports the valve body so as to be displaceable in a direction approaching and separating from the partition wall is a partition wall including a plurality of openings, and the plurality of openings serve as the support mechanism. Therefore, the valve body can be supported by the support mechanism provided on the partition wall, and the support dimension of the valve body can be increased. The valve body can be supported in a stable posture. In the present invention, if a plurality of the plurality of openings are formed in the circumferential direction around the support mechanism formed in the partition wall, the valve body supported by the support mechanism is provided in the circumferential direction. Similarly, fluid can be bypassed and stable operation can be achieved.

The invention's effect

[0017] In the present invention, the support mechanism for the valve body is constituted by the shaft portion and a receiving portion such as a cylindrical portion through which the shaft portion passes, and the partition wall sandwiched by the plurality of openings is provided on the partition wall. Since the support mechanism for supporting the valve body is provided, the support dimension can be increased. For this reason, the valve body can be supported in a stable posture. Also, in the support mechanism, even if the relative position of the shaft part and the receiving part changes as the valve body moves, the support dimensions do not change and remain long. In this case, the valve body can be supported in a stable state, and the valve body moves smoothly. Therefore, the bypass channel can be smoothly opened and closed according to the set fluid pressure.

Brief Description of Drawings

[0018] [Fig. 1] (a) and (b) are a plan view and a cross-sectional view taken along line AA ^ of a hydroelectric power generation apparatus to which the present invention is applied.

2 is a plan view showing a configuration of a main body case used in the hydroelectric generator shown in FIG.

3] (a), (b), and (c) are a plan view, a front view, and a bottom view showing a configuration of a cover used in the hydroelectric generator shown in FIG.

[FIG. 4] (a), (b), and (c) are a plan view, a front view, and a bottom view showing a configuration of a cover that can be used in the hydroelectric generator shown in FIG.

[Fig. 5] (a), (b), and (c) are perspective views of the power generation turbine used in the hydroelectric generator shown in Fig. 1 when viewed from the first radial bearing side force. FIG. 6 is a plan view of the second radial bearing side force and a cross-sectional view along B-B ′.

[FIG. 6] (a) and (b) are an enlarged view showing the configuration of the valve mechanism shown in FIG. 1 (b) and an explanatory view when the partition wall is viewed from the fluid inlet side.

FIG. 7 is a graph showing the relationship between the flow rate poured into the power generation turbine of the hydroelectric generator shown in FIG. 1 and the rotational speed of the power generation turbine at that time. 8 is a configuration diagram showing the configuration of another valve mechanism that can be used in the hydroelectric generator shown in FIG.

FIG. 9 is a cross-sectional view showing a configuration of a valve body used in a conventional hydroelectric generator.

Explanation of symbols

[0019] 1 Hydroelectric generator

5 Power generation turbine

9 Valve mechanism

21 Body case

23 Cover

31 Fluid inlet

32 Fluid outlet

35 watermill

38 opening

90 Disc

95 Coil panel

96 Seal member

99 Support mechanism

901 Valve

902 Shaft

110 First channel

120 Second channel

217 Tube (receiving part)

219 Bulkhead

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, a hydroelectric generator to which the present invention is applied will be described with reference to the drawings.

[0021] (Overall configuration)

1 (a) and 1 (b) are a plan view and a cross-sectional view taken along the line AA ′ of the hydroelectric generator to which the present invention is applied. In Fig. 1, the Α-Α 'line does not pass through the injection port formation position. The left part of (b) also shows the injection port.

[0022] The hydroelectric generator 1 shown in Figs. 1 (a) and (b) is a small hydroelectric generator disposed in the middle of the channel of tap water, and the electric power obtained by the hydroelectric generator 1 is obtained. It is used for purposes such as storing electricity and supplying this power to the sensor circuit of an automatic faucet device. The hydroelectric generator 1 according to the present embodiment includes a resin-made main body case 21 constituting a flow path to be described later, a cover 23 covering the upper surface of the main body case 21, and a stainless cup-shaped partition plate 2 covering the cover 23. 5 and an annular case 27 sandwiching the stator portion 6 between the partition plate 25 and the flange portion of the partition plate 25, and an upper case 29 made of resin covering the upper portion of the annular case 27. The cut plate 25 is fixed to the main body case 21 with screws. Further, an EPDM seal 281 is stacked on the bottom surface of the main body case 21, and a rubber O-ring 282 is disposed between the partition plate 25 and the main body case 21 !.

[0023] The body case 21 is provided with a fluid inlet 31 and a fluid outlet 32 that open on opposite sides, and a direction force from the fluid inlet 31 to the fluid outlet 32 is located in the middle of the first flow path 110. The main body case 21 and the cover 23 form a water injection section described later, and a water turbine chamber 35 is formed between the main body case 21 and the cutting plate 25. In the water turbine chamber 35, the lower end and the upper end are upright, respectively, with a support shaft 4 press-fitted and fixed in the shaft fixing holes of the body case 21 and the partition plate 25. The support shaft 4 has a cylindrical power turbine. 5 is rotatably supported. A bush 45 made of resin is fitted to the support shaft 4, and the power generation water turbine 5 is supported by the upper half portion of the support shaft 4 exposed from the sleeve 45. In addition, the power generation water turbine 5 is prevented from being displaced in the vertical direction by a washer attached to the support shaft 4.

In the water turbine 5 for power generation, a cylindrical permanent magnet 55 is fixed to the outer peripheral surface of the upper half portion located in the cylindrical portion 251 of the partition plate 25. In addition, annular stator assemblies 61 and 62 are arranged around the cylindrical portion 251 of the partition plate 25, and the permanent magnet 55 and the stator portion 6 constitute a power generation unit.

[0025] The stator section 6 is composed of two-phase stator sets 61 and 62 that are arranged so as to overlap in the axial direction. Each of the two stator sets 61 and 62 has a structure in which the outer stator core, the coil wound around the coil bobbin, and the inner stator core are stacked, and the outer stator core is arranged along the inner periphery of the coil bobbin. The pole teeth and the pole teeth of the inner stator core alternate Are lined up. In addition, the winding start portion and winding end portion of the coil are connected to the connector 69 through the terminal 67 and the wire 68 of the terminal block 66. The upper case 29 is formed with a hood portion 291 that covers the terminal block 66, and has a structure that prevents water from entering the stator portion 6.

[0026] Further, in the hydroelectric generator 1 of the present embodiment, the second flow path 120 for directional bias is formed in the fluid outlet 32 without the water flowing in from the fluid inlet 31 passing through the water turbine chamber 35. The second flow path 120 is configured with a valve mechanism 9 described later with reference to FIG.

[0027] (Composition of water injection part)

FIG. 2 is a plan view showing the configuration of the main body case used in the hydroelectric generator shown in FIG. FIGS. 3A, 3B, and 3C are a plan view, a front view, and a bottom view, respectively, showing the configuration of the cover used in the hydroelectric generator shown in FIG. FIGS. 4 (a), 4 (b), and 4 (c) are a plan view, a front view, and a bottom view, respectively, showing a configuration of another cover that can be used for the hydroelectric generator shown in FIG.

[0028] As shown in Figs. 1 and 2, in the hydroelectric generator 1 of the present embodiment, in the main body case 21, a partition wall 219 is erected so as to face the fluid inlet 31. An annular channel 33 is formed around the chamber 35. Here, the annular flow path 33 has a bottom surface, an inner peripheral surface, an outer peripheral surface, and an upper surface, respectively, the annular partition wall 211 of the main body case 21, the annular inner vertical wall 212 of the main body case 21, and the annular shape of the main body case 21 The outer vertical wall 213 and the cover 23 shown in FIG. The inner vertical wall 212 has notches for forming the outlets 34 at four locations in the circumferential direction. Further, an inclined surface 330 (shaded portion in FIG. 2) is formed in a part of the annular flow path 33.

[0029] On the other hand, as shown in FIGS. 3 (a), (b), and (c), the cover 23 has a ring shape, and the lower surface of the ring portion 230 of the cover 23 is shown in FIG. Ribs 231 (protrusions) that fit into the four injection ports 34 and adjust the opening area of each of the injection ports 34 are formed at portions corresponding to the four injection ports 34 of the main body case 21. Further, by providing the rib 231 with a taper 23 la, the protruding dimension is adjusted. Accordingly, when the upper surface of the main body case 21 is covered with the cover 23, four injection ports 3 4 are formed that inject water at high speed from the annular flow path 33 toward the blades 57 of the power generation water turbine 5. [0030] Note that a cover 23 'having a structure in which no rib is formed on the ring portion 230 as shown in FIG. 4 may be used. In this way, the amount of water injected from the injection port 34 can be adjusted by replacing the cover having a different rib shape depending on the application.

[0031] (Configuration of power generation turbine 5)

Figs. 5 (a), (b), and (c) are perspective views of the power generation turbine used in the hydroelectric power generation device shown in Fig. 1 when the first radial bearing side force is seen. FIG. 3 is a plan view of the radial bearing side force and a BB ′ cross-sectional view.

[0032] As shown in Figs. 5 (a), (b), and (c), the hydroelectric generator 1 of this embodiment is! A cylindrical body 50 projecting at equal angular intervals, a cylindrical first radial bearing 51 located at one end of the through hole 501 of the cylindrical body 50 (a lower side where the main body case 21 is located), and a through hole 501 on the other side end (upper side where the cylindrical portion 251 of the partition plate 25 is located) and a cylindrical second radial bearing 52 located at the bottom, and a shaft hole 510 of the first radial bearing 51, The power generation turbine 5 is rotatably supported around the support shaft 4 by fitting the support shaft 4 shown in FIG. 1 (b) into the shaft hole 520 of the second radial bearing 52. The cylindrical body 50 has a large diameter at the lower end where the blades 57 are formed, and a small diameter at the upper half, and a cylindrical permanent magnet 55 is fixed to the small diameter portion.

[0033] In the present embodiment, in the power generation water turbine 5, the plurality of blades 57 are respectively positioned on the first blade 571 on the second radial bearing 52 side and on the first radial bearing 51 side in the axial direction. The second blade 572 is divided into two, and the outer peripheral end of the second blade 572 is connected by a cylindrical plate portion 58 parallel to the axial direction of the cylindrical body 50. Here, the outer end surface of the cylindrical plate portion 58 is located at the same radial distance as the outer peripheral end of the first blade 571.

[0034] As shown in FIGS. 5 (b) and 5 (c), the four power outlets 34 are formed around the power generation water turbine 5 at equiangular intervals for the power generation water turbine 5 configured as described above. ing. In addition, the four injection ports 3 4 are opened by force in a direction straddling both the first blade 571 and the cylindrical plate portion 58. As shown by arrows Ll and L2 in FIG. Each of the two injection ports 34 is configured to inject water across the first blade 571 and the cylindrical plate portion 58. That is, a part of the water ejected from the ejection port 34 directly hits the first blade 571 as shown by the arrow L1, while the remaining water ejected from the ejection port 34 is the cylindrical plate portion. Do n’t hit the 58 ’s outer surface. It is. Here, the number of injection ports 34 formed in the water injection section and the number of blades 57 are in a prime relationship, and the condition that one is an integral multiple of the other is avoided. For example, in this embodiment, there are four injection ports 34, while the number of blades 57 is seven.

[0035] (Power generation operation)

In the hydroelectric generator 1 configured as described above, the water flowing from the fluid inlet 31 collides with the partition wall and flows into the upper annular flow path 33, and then the blades 57 of the power generation turbine 5 from the four outlets 34. It is injected towards. As a result, the power generation water turbine 5 rotates, and accordingly, the permanent magnet 55 also rotates, so that an induced voltage is generated in the coil of the stator portion 6. The water that has finished turning the power generation turbine 5 falls downward and is discharged through the fluid outlet 32. The induced voltage generated in the stator section 6 is guided to an external circuit through the connector 69, converted into direct current by this circuit, rectified and charged to the battery.

(Configuration of second flow path for bypass and valve mechanism 9)

6 (a) and 6 (b) are an enlarged view showing the configuration of the valve mechanism 9 shown in FIG. 1 (b) and an explanatory view when the partition 219 is viewed from the fluid inlet side in FIG. 6 (a). is there.

[0037] As shown in FIGS. 1 and 6 (a), in the hydroelectric generator 1 in this embodiment, the water that has also flowed into the fluid inlet 3 is directed to the fluid outlet 32 without passing through the turbine chamber 35. The second flow path 120 is formed. That is, the partition wall 219 facing the fluid inlet 31 is formed with a recess 219a that is recessed toward the fluid outlet 32, and the bottom of the recess 219a is formed in the circumferential direction as shown in FIG. A plurality of aligned openings 38 are formed so that the fluid inlet 31 and the fluid outlet 32 can communicate with each other.

[0038] Further, the valve mechanism 9 is configured for the opening 38, and the valve mechanism 9 closes the opening 38 (second flow path) when the fluid pressure is low, and the fluid pressure is When raised, the opening 38 (second flow path) is switched to the closed force open state. In configuring the valve mechanism 9, in this embodiment, the partition wall 219 protrudes toward the upstream surface of the second flow path 120 toward the bottom force fluid inlet 31 side of the recess 219a. A cylindrical tube portion 217 (receiving portion) is formed, and four openings 38 are arranged around the tube portion 217. The valve mechanism 9 includes a valve body 90. The valve body 90 includes a valve portion 901 that overlaps the back surface side of the partition wall 219 (the downstream side Z fluid outlet 32 side in the second flow path 120). , Central force of valve part 901 is also fluid inlet 3 1 is provided, and a shaft portion 902 having a round bar shape protruding toward the side 1 is provided, and the shaft portion 902 penetrates the cylindrical portion 217. In this way, in the valve mechanism 9, the shaft portion 902 and the cylindrical portion 217 constitute a support mechanism 99 for the valve body 90, and this support mechanism 99 is sandwiched between the four openings 38; Specifically, it is arranged at the center position of the four openings 38.

Here, a seal member 96 made of fluorine-based rubber or fluorine-based resin is affixed to a portion of the valve portion 901 that comes into contact with the back surface side of the partition wall 219. The surface of the seal member 96 is provided with fine irregularities, and such irregularities are formed by blasting the seal member 96 or by blasting the mold when the seal member 96 is molded. Can do. Further, the surface of the partition wall 219 that contacts the seal member 96 is a smooth surface.

In the valve body 90, a projection 903 having a smaller diameter than the base end side is formed at the distal end portion of the shaft portion 902. A step 905 formed by the projection 903 is tightened by a push nut 91. Sha 92 is fixed. A coil panel 95 is mounted around the shaft portion 902. The coil panel 95 is in a compressed state with both ends supported by the washer 92 and the portion around the cylindrical portion 217 of the partition wall 219.

In the valve mechanism 9 configured as described above, the valve element 90 is urged toward the fluid inlet 31 by the coil panel 95, so that the valve portion 901 abuts against the partition wall 219 via the seal member 96. Yes. For this reason, when the pressure of the water flowing in from the fluid inlet 31 is low, the opening 38 is closed. However, if the pressure of the water flowing in from the fluid inlet 31 becomes so high that the washer 92 and the valve portion 901 receive a water pressure larger than the biasing force of the coil panel 95, the valve body 90 will resist the biasing force of the coil panel 95. As a result, the valve 901 is displaced toward the fluid inlet 32, and the force on the back side of the partition wall 219 is also separated, so that the bypass opening 38 is opened. Therefore, when the pressure of water flowing in from the fluid inlet 31 is low, all of the flowing water is led to the water turbine chamber 35 via the annular flow path 33 and contributes to power generation, while flowing in from the fluid inlet 31. When the water pressure is high, a part of the flowing water passes through the opening 38 for the no-pass and goes to the fluid outlet 32 as it is. Therefore, it is possible to avoid problems such as rattling due to the rotational speed of the power generation turbine 5 becoming too high.

[0042] (Main effects of this embodiment) As described above, in the hydraulic power generation device 1 according to the present embodiment, the valve mechanism 9 configured in the second flow path 120 for bypassing has the support mechanism 99 for the valve body 90 in the fluid input from the partition wall 219. The fitting part (supporting dimension) is long because it has a cylindrical part 217 extending toward the port 31 and a shaft part 902 that protrudes from the valve body 90 toward the fluid inlet 31 and penetrates the cylindrical part 217. . For this reason, the valve body 90 can be supported in a stable posture. Further, since the shaft portion 902 penetrates the tube portion 217, even if the relative position between the tube portion 217 and the shaft portion 902 changes with the movement of the valve body 90, the tube portion 217 and the shaft portion 902 do not move. Since the fitting dimension remains long, the valve body 90 can be stably supported even when the valve body 90 is in any position, and the valve body 90 moves smoothly. Therefore, the second flow path 120 for the no-pass can be smoothly opened and closed according to the set fluid pressure.

[0043] In addition, the partition wall 219 has a recess 219a that is recessed toward the fluid outlet 32, and an opening 38 is formed at the bottom of the recess 219a. By this recess 219a, water flowing from the fluid inlet 31 can be made to act vertically on the valve portion 901 that closes the opening 38. Therefore, blurring of the valve body 90 and the coil panel 95 can be suppressed.

[0044] Further, the contact surface of the partition wall 219 with the valve portion 901 is formed as a smooth surface, while the valve portion 901 has a seal portion made of fluoro rubber or fluoro resin at a position where it contacts the partition wall 219. Material 96 is interposed. For this reason, when the fluid pressure of water supplied from the fluid inlet 31 is less than a predetermined pressure, the valve member 901 and the opening 38 can be reliably closed by the seal member 96. In addition, since the surface roughness of the seal member 96 is optimized by providing fine irregularities on the surface of the seal member 96, the water pressure supplied from the fluid inlet 31 exceeds a predetermined pressure. The seal member 96 is not attracted to the partition wall 219 and is smoothly separated. Therefore, the second flow path 120 for the no-pass can be smoothly opened and closed.

[0045] Furthermore, since the step portion 905 that defines the position of the washer 92 is formed at the tip end portion of the shaft portion 902, the coil panel 95 can be attached to the shaft portion 902 in a state of a predetermined length. wear. Therefore, since the load at which the valve body 90 starts to open (starting load) can be set appropriately, the valve body 90 operates appropriately.

[0046] (Evaluation result of relationship between flow rate and rotation speed of water turbine for power generation)

The effect of this embodiment will be further described with reference to FIG. Figure 7 shows that the hydroelectric generator shown in Figure 1 It is a graph which shows the relationship between the flow volume poured into the power generation turbine and the rotation speed of the power generation turbine at that time.

[0047] In FIG. 7, in the hydroelectric power generation device without bypass (not forming the second flow path), the starting loads of the coil panel 95 in the valve mechanism 9 to which the present embodiment is applied are 175gr, 215gr, 220gr, The graph shows the relationship between the flow rate poured into the power generation turbine of each hydroelectric generator and the number of rotations of the power generation turbine at that time, using lines I to VI in order of those set to 225gr and 280gr . As shown in Fig. 7, in the hydroelectric power generator, when the flow rate poured into the power generation turbine changes from lOLZmin to 25LZmin, the number of rotations of the power generation turbine is reduced without the bypass (as indicated by line I). In contrast to the flow rate that increases in proportion to the flow rate, with the valve mechanism 9 to which this embodiment is applied (results shown by lines I to VI), the flow rate poured into the power generation turbine changes from lOLZmin to 25LZmin. However, the rotational speed of the power generation turbine is stable at around 3000-4000rpm. Therefore, according to the valve mechanism 9 to which the present invention is applied, the switching operation of the closing state force and the opening state can be smoothly performed, and the amount of water supplied to the water turbine chamber 35 can be always kept constant. I understand. Therefore, according to the present invention, it is possible to prevent the occurrence of rotational noise or the like of the power generation water turbine 5.

[0048] (Variation of valve mechanism 9)

FIG. 8 is an explanatory view showing a modification of the valve mechanism according to the present invention. In the support mechanism 99 of the valve mechanism 9 configured in the above embodiment, the force in which the cylindrical portion 217 is formed toward the partition wall 219 and the shaft portion 902 is formed toward the valve body 90, as shown in FIG. In 219 ^, a shaft portion 902 'may be formed on the downstream surface of the second flow path 120, and a cylindrical portion 217' (receiving portion) may be formed on the valve body 90 '. In this case as well, the washer 92 'may be positioned by the step 905' formed on the shaft 90 'and the push nut 91', and the coil panel 95 'may be disposed between the washer 92' and the valve portion 901 /.

In the example shown in FIGS. 6 and 8, a sealing member 96 made of fluoro rubber or fluoro resin is attached to a portion of the force partition wall 219 in which the sealing member 96 is attached to the valve body 90 in contact with the valve body 90. It may be attached. Also in this case, it is preferable to optimize the surface roughness of the seal member 96 by subjecting the surface of the seal member 96 to blasting.

[0050] Furthermore, in the above embodiment, in configuring the support mechanism 99 of the valve mechanism 9, the shaft portion 902, Forces with cylinders 217, 21 through which 902 'penetrates as receiving parts Even when the relative position with shaft parts 902, 90 ^ changes, receiving parts with a constant support dimension between shaft parts 902, 902' In that case, a configuration in which the periphery of the shaft portion is partially supported, for example, a configuration in which the periphery of the shaft portion is supported at a plurality of locations, a configuration in which the groove and the protrusion are engaged, and the like may be employed. .

Industrial applicability

The hydroelectric generator according to the present invention is a hydroelectric generator that generates electricity using movement of water such as tap water, and operates stably even when the amount of water supplied to the turbine chamber increases. It is useful as a power generator that needs to be performed.

Claims

The scope of the claims

[1] A first flow path for power generation including a water turbine chamber in which a water turbine for power generation is disposed, a second flow path for bypass configured in parallel to the water turbine chamber, and a fluid pressure A hydraulic power generation apparatus having a valve mechanism that switches the second flow path to a closed force open state when the lift is raised, the valve mechanism includes a partition wall having an opening that constitutes the second flow path; A valve body for opening and closing the opening, a support mechanism that supports the valve body so as to be displaceable in a direction approaching and separating from the partition wall, and a direction in which the opening is closed by piled on fluid pressure A biasing member that biases the valve body, and the support mechanism changes a relative position between the shaft portion formed on one side of the valve body and the partition wall and the shaft portion. The hydroelectric power generator is provided with a receiving portion having a constant support dimension between the shaft portion and the shaft portion.

[2] The hydroelectric generator according to claim 1, wherein the receiving portion is a cylindrical portion through which the shaft portion passes.

[3] The hydroelectric power generator according to claim 1 or 2, wherein the opening is formed around a position where the receiving portion or the shaft portion is formed with respect to the partition wall.

[4] In any one of claims 1 to 3, the shaft portion is formed in the valve body, and the receiving portion is a surface located on the upstream side in the second flow path among both surfaces of the partition wall. A hydroelectric generator characterized by protruding from.

[5] In any one of claims 1 to 3, the receiving portion is formed in the valve body, and the shaft portion is a surface located on the downstream side in the second flow path among both surfaces of the partition wall. A hydroelectric generator characterized by protruding.

[6] In any one of claims 1 to 5, one of the contact surface of the valve body with the partition wall and the contact surface of the partition wall with the valve body is a fluorine-based material. A hydroelectric power generation device comprising a sealing member made of rubber or fluorine-based resin, and having fine irregularities on the surface of the sealing member.

[7] In Claim 6, the other contact surface of the contact surface of the valve body with the partition wall and the contact surface of the partition wall with the valve body is a smooth surface. A hydroelectric generator characterized by

[8]

The biasing member is a coil panel, and a positioning portion for a stopper that supports one end of the coil is formed at the tip of the shaft! A hydroelectric generator characterized by squeezing.

[9] A first flow path for power generation including a water turbine chamber in which a water turbine for power generation is disposed, a second flow path for bypass configured in parallel to the water turbine chamber, and a fluid pressure A hydraulic power generation device having a valve mechanism for switching the second flow path to a closed force open state when the lift is raised, wherein the valve mechanism includes a plurality of openings constituting the second flow path. A valve body for opening and closing the opening, a support mechanism for supporting the valve body so as to be displaceable in a direction approaching and separating from the partition wall, and a direction in which the opening is closed by piled on fluid pressure And a biasing member for biasing the valve body, wherein the support mechanism is a partition wall having the plurality of openings, and supports the valve body at a position sandwiched by the plurality of openings. A hydroelectric generator characterized by being formed as described above.

[10] The hydroelectric power generator according to claim 9, wherein a plurality of the plurality of openings are formed in a circumferential direction around a support mechanism formed in the partition wall.

[11] In Claim 10, the support mechanism includes a shaft portion formed on one side of the valve body and the partition wall, and the shaft portion formed on the other side of the valve body and the partition wall. A hydroelectric generator comprising: a receiving portion that abuts so as to be displaceable.

12. The hydroelectric power generator according to claim 11, wherein the receiving part is a cylindrical part through which the shaft part passes.

[13] In Claim 9, one of the contact surfaces of the valve body with the partition wall and the contact surfaces of the partition wall with the valve body is fluorinated rubber or fluorinated resin. A hydroelectric power generator comprising a seal member made of

[14] The hydroelectric power generator according to claim 13, wherein fine irregularities are provided on a surface of the seal member.