Wiring structure of lower rack of hydraulic generator

Abstract

The utility model discloses a wiring structure of a lower rack of a hydro-generator. The device comprises a lower rack; the oil pool wall is fixed on the lower rack; the wire passing opening is formed in the wall of the oil pool; the limiting frame is arranged on the outer surface of the oil pool wall and located on the outer side of the wire passing opening; the wiring board is arranged in the limiting frame; the sealing ring is arranged between the wiring board and the oil pool wall, and the sealing ring is located on the outer side of the wire passing opening; the pressing plate is arranged on the limiting frame and movably connected with the limiting frame, and the pressing plate is located on the outer side of the wiring board. The sealing structure has the beneficial effects that the sealing effect between the wiring board and the wall of the oil pool is improved, and oil in the lower rack can be well prevented from leaking from the wire passing opening; the installation is convenient; and the pressing effect is enhanced, and the operation efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of water turbines, and in particular to a wiring structure for the lower frame of a water turbine generator. Background Technology

[0002] A hydroelectric generator is a generator that uses a hydroelectric turbine as its prime mover to convert water energy into electrical energy. As water flows through the turbine, it converts water energy into mechanical energy. The turbine's shaft then drives the generator's rotor, converting the mechanical energy into electrical energy for output. It is the main power equipment for producing electricity in a hydroelectric power station.

[0003] The temperature measuring resistors of the guide bearings and the oil sump of the hydro generator are generally led out to the terminal box through the lower frame terminal block. The traditional lower frame wiring structure usually involves making a notch in the oil sump wall below the oil level, welding a flange around the notch, and fixing the terminal block to the flange with bolts. This traditional wiring structure has problems such as leakage at the flange weld, leakage risk of the terminal block itself, and poor sealing between the terminal block and the flange, which can easily lead to oil leakage from the terminal block.

[0004] In summary, there is a need for a wiring structure for the lower frame of a hydro-generator that can prevent oil leakage from the terminal block. Utility Model Content

[0005] This utility model aims to overcome the shortcomings of existing technologies, such as leakage at flange welds, leakage risks from the terminal block itself, and poor sealing between the terminal block and the flange. It provides a wiring structure for the lower frame of a hydro-generator that can prevent oil leakage from the terminal block.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A wiring structure for the lower frame of a hydro-generator includes:

[0008] Remove from rack;

[0009] The oil tank wall is fixed to the lower frame;

[0010] A cable inlet is provided on the wall of the oil tank;

[0011] A limiting frame is disposed on the outer surface of the oil tank wall and located outside the through-hole;

[0012] The junction box is located within the limit frame;

[0013] A sealing ring is disposed between the terminal block and the oil sump wall, and the sealing ring is located on the outside of the wire passage opening;

[0014] A clamping plate is disposed on and movably connected to the limiting frame, and the clamping plate is located outside the wiring plate.

[0015] The design of the limiting frame facilitates the installation and positioning of the terminal block on the oil tank wall. By setting a sealing ring between the terminal block and the oil tank wall, and pressing the terminal block against the oil tank wall with a clamping plate, the sealing effect between the terminal block and the oil tank wall is greatly increased, which can effectively prevent oil in the lower frame from leaking from the cable outlet.

[0016] Preferably, the terminal block has several terminals fixed on it, located inside the wire passage. The terminals on the terminal block are used to connect temperature measuring wires.

[0017] Preferably, the oil tank wall is provided with a first sealing ring placement groove that matches the sealing ring. One side of the sealing ring is placed in the first sealing ring placement groove and the two are fixedly connected. The inner wall of the terminal block is provided with a second sealing ring placement groove that matches the sealing ring, and the other side of the sealing ring is placed in the second sealing ring placement groove. The cooperation of the first and second sealing ring placement grooves improves the installation accuracy of the sealing ring, increases the contact area between the terminal block, the oil tank wall and the sealing ring, and further improves the sealing effect.

[0018] Preferably, the limiting frame is equipped with guide post one and guide post two, which are respectively positioned on the left and right sides of the wiring plate and are parallel to each other. The clamping plate is positioned on the upper and lower sides of the wiring plate. One side of the clamping plate is sleeved on guide post one and the two are movably connected. The other side of the clamping plate is sleeved on guide post one and the two are movably connected. An inclined guide surface one is provided on the side of the clamping plate facing the wiring plate. The inclined guide surface one is inclined towards the wiring plate from the end near the wire opening to the end away from the wire opening. An inclined guide surface two matching the inclined guide surface one is provided on the outer wall of the wiring plate. The design of guide post one and guide post two facilitates the installation of the clamping plate on the limiting frame and also guides the movement of the clamping plate. In its natural state, the clamping plate is located at the edge of the limiting frame. When the clamping plate moves toward the center of the limiting frame, under the guidance of inclined guide surface one and inclined guide surface two, the clamping plate will push the wiring plate to press it toward the oil tank wall, making the clamping plate and the sealing ring more tightly contacted, thereby improving the sealing effect.

[0019] Preferably, a guide post mounting base is fixed on the limiting frame. The guide post mounting base is positioned at both ends of a guide post, and the ends of the guide posts are mounted on the guide post mounting bases and fixedly connected. The clamping plate is provided with guide through holes that match the guide posts, and the guide posts are placed in the guide through holes and slidably connected. The cooperation between the guide posts and the guide through holes facilitates the installation of the clamping plate on the guide posts and simultaneously guides and limits the movement of the clamping plate.

[0020] Preferably, a guide post mounting seat two is fixed on the limiting frame. The guide post mounting seat two is respectively placed at both ends of the guide post one. The end of the guide post two is mounted on the guide post mounting seat two and the two are rotatably connected. External thread area one and external thread area two are respectively provided on the upper and lower sides of the guide post two. The helical direction of external thread area one and the helical direction of external thread area two are opposite. One of the clamping plates is provided with an internal thread hole one that matches external thread area one. One of the clamping plates is threadedly connected to the guide post two through the cooperation of internal thread hole one and external thread area one. The other clamping plate is provided with an internal thread hole two that matches external thread area two. The other clamping plate is threadedly connected to the guide post two through the cooperation of internal thread hole two and external thread area two.

[0021] During clamping, the operator rotates the guide column two. At this time, the two clamping plates will be driven by the internal thread one and the external thread area one, and the internal thread two and the external thread area two, respectively, converting the rotational motion of the guide column two into the linear motion of the clamping plates. Since the spiral directions of the threads on both sides are opposite, the clamping plates on both sides will move towards the center position of the limit frame at the same time, thereby pushing the wiring plate from both sides to clamp it towards the oil tank wall, enhancing the clamping effect and improving the operating efficiency.

[0022] Preferably, a rotating block is fixed to the end of the second guide post, and a rotating block mounting groove matching the rotating block is provided on the second guide post mounting base. The rotating block is placed in the rotating block mounting groove and rotatably connected to it. Through the cooperation of the rotating block and the rotating block mounting groove, the second guide post is easily installed on the second guide post mounting base, and at the same time, it plays a guiding role in the rotation of the second guide post.

[0023] Preferably, the rotating block has an annular groove on its side wall, and an annular rack is fixed to the bottom surface of the annular groove. A locking pin through hole is fixed to the side wall of the rotating block mounting groove, and a locking pin is installed inside the locking pin through hole. The locking pin is located outside the annular groove and is slidably connected to the locking pin through hole. A locking tooth is provided on the end of the locking pin facing the annular rack, and the locking tooth engages with the annular rack. After tightening, the operator can push the locking pin into the annular groove and engage the locking tooth at the end of the locking pin with the annular rack, thereby locking the guide post two and preventing a decrease in the clamping force of the clamping plate on the wiring plate due to the rotation of the guide post.

[0024] The beneficial effects of this utility model are: it increases the sealing effect between the terminal block and the oil tank wall, which can effectively prevent oil in the lower frame from leaking from the cable outlet; it is easy to install; it enhances the clamping effect and improves operating efficiency. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this utility model;

[0026] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0027] Figure 3 This is a frontal view of the oil tank wall;

[0028] Figure 4 yes Figure 3 Enlarged view of point B in the middle.

[0029] In the diagram: 1. Lower frame, 2. Oil sump wall, 3. Through port, 4. Limit frame, 5. Terminal block, 6. Sealing ring, 7. Pressure plate, 8. Terminal post, 9. Sealing ring placement slot one, 10. Sealing ring placement slot two, 11. Guide post one, 12. Guide post two, 13. Guide post mounting seat one, 14. Guide through hole, 15. Guide post mounting seat two, 16. External thread area one, 17. External thread area two, 18. Internal thread hole one, 19. Internal thread hole two, 20. Rotary block, 21. Rotary block mounting slot, 22. Annular groove, 23. Annular rack, 24. Locking pin through hole, 25. Locking pin, 26. Locking tooth, 27. Normal oil level. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0031] like Figures 1-4 In the embodiments described above, a wiring structure for the lower frame of a hydro-generator includes:

[0032] Lower rack 1;

[0033] Oil tank wall 2 is fixed on the lower frame 1;

[0034] The through-hole 3 is located on the oil tank wall 2 and below the normal oil level 27;

[0035] The limiting frame 4 is set on the outer surface of the oil tank wall 2 and located outside the through port 3. The limiting frame 4 and the oil tank wall 2 are integrally molded.

[0036] The wiring board 5 is located within the limiting frame 4;

[0037] A sealing ring 6 is disposed between the terminal block 5 and the oil sump wall 2, and the sealing ring 6 is located on the outside of the through port 3;

[0038] The clamping plate 7 is set on the limiting frame 4 and is movably connected to it. The clamping plate 7 is located outside the wiring plate 5.

[0039] Several terminals 8 are fixed on the terminal block 5, and the terminals 8 are located inside the cable outlet 3.

[0040] The oil tank wall 2 is provided with a sealing ring placement groove 19 that matches the sealing ring 6. One side of the sealing ring 6 is placed in the sealing ring placement groove 19 and the two are fixedly connected. The inner wall of the terminal block 5 is provided with a sealing ring placement groove 20 that matches the sealing ring 6. The other side of the sealing ring 6 is placed in the sealing ring placement groove 20.

[0041] The limiting frame 4 is equipped with guide post 11 and guide post 22. Guide post 11 and guide post 22 are respectively placed on the left and right sides of the terminal block 5 and are parallel to each other. The clamping plate 7 is placed on the upper and lower sides of the terminal block 5. One side of the clamping plate 7 is sleeved on the guide post 11 and the two are movably connected. The other side of the clamping plate 7 is sleeved on the guide post and the two are movably connected. The clamping plate 7 is provided with a sloping guide surface 1 on the side facing the terminal block 5. The sloping guide surface 1 is inclined towards the terminal block 5 from the end near the wire opening 3 to the end away from the wire opening 3. The outer wall of the terminal block 5 is provided with a sloping guide surface 2 that matches the sloping guide surface 1.

[0042] The limiting frame 4 is fixed with a guide post mounting seat 13. The guide post mounting seat 13 is placed at both ends of the guide post 11. The ends of the guide post 11 are mounted on the guide post mounting seat 13 and the two are fixedly connected. The clamping plate 7 is provided with a guide through hole 14 that matches the guide post 11. The guide post 11 is placed in the guide through hole 14 and the two are slidably connected.

[0043] A guide post mounting base 2 15 is fixed on the limiting frame 4. The guide post mounting base 2 15 is placed at both ends of the guide post 1 11. The end of the guide post 2 12 is mounted on the guide post mounting base 2 15 and the two are rotatably connected. The upper and lower sides of the guide post 2 12 are respectively provided with an external thread area 1 16 and an external thread area 2 17. The spiral direction of the external thread area 1 16 and the spiral direction of the external thread area 2 17 are opposite. One of the clamping plates 7 is provided with an internal thread hole 18 that matches the external thread area 1 16. One of the clamping plates 7 is threadedly connected to the guide post 2 12 through the cooperation of the internal thread hole 1 18 and the external thread area 16. The other clamping plate 7 is provided with an internal thread hole 2 19 that matches the external thread area 2 17. The other clamping plate 7 is threadedly connected to the guide post 2 12 through the cooperation of the internal thread hole 2 19 and the external thread area 2 17.

[0044] The end of the guide post 212 is fixed with a rotating block 20. The guide post mounting base 215 is provided with a rotating block mounting groove 21 that matches the rotating block 20. The rotating block 20 is placed in the rotating block mounting groove 21 and is rotatably connected to it.

[0045] An annular groove 22 is provided on the side wall of the rotating block 20. An annular rack 23 is fixed on the bottom surface of the annular groove 22. A locking pin through hole 24 is fixed on the side wall of the rotating block mounting groove 21. A locking pin 25 is provided in the locking pin through hole 24. The locking pin 25 is located outside the annular groove 22 and is slidably connected to the locking pin through hole 24. A locking tooth 26 is provided on the end of the locking pin 25 facing the annular rack 23. The locking tooth 26 and the annular rack 23 are engaged.

[0046] During installation, align the sealing ring placement groove 10 on the terminal block 5 with the sealing ring 6, then place the terminal block 5 into the limiting frame 4 on the oil tank wall 2 and press the terminal block 5 against the oil tank wall 2.

[0047] During clamping, the operator rotates the guide post 12. At this time, the two clamping plates 7 will be driven by the internal thread hole 18 and the external thread area 16, and the internal thread hole 19 and the external thread area 17, respectively, to convert the rotational motion of the guide post 12 into the linear motion of the clamping plates 7. Since the spiral directions of the threads on both sides are opposite, the clamping plates 7 on both sides will move towards the center position of the limit frame 4 at the same time. Then, under the guidance of the inclined guide surface 1 and the inclined guide surface 2, the clamping plates 7 on both sides will push the wiring plate 5 from both sides at the same time, pressing it towards the oil tank wall 2, so that the clamping plates 7 and the sealing ring 6 are in close contact to ensure the sealing effect.

[0048] After the clamping is completed, the operator can push the locking pin 25 into the annular groove 22 and lock the locking tooth 26 at the end of the locking pin 25 onto the annular rack 23, thereby locking the guide post 2 12 and preventing the clamping force of the clamping plate 7 on the wiring plate 5 from decreasing due to the rotation of the guide post 2 12.

Claims

1. A water turbine generator lower frame wiring structure, characterized in that it comprises: a lower frame (1); an oil pool wall (2) fixed to the lower frame (1); a wire passing port (3) provided on the oil pool wall (2); a limiting frame (4) provided on the outer surface of the oil pool wall (2) and located outside the wire passing port (3); a wiring board (5) provided in the limiting frame (4); a sealing ring (6) provided between the wiring board (5) and the oil pool wall (2), the sealing ring (6) being located outside the wire passing port (3); a pressing plate (7) provided on the limiting frame (4) and movably connected thereto, the pressing plate (7) being located outside the wiring board (5).

2. A water turbine generator lower bracket wiring structure according to claim 1, characterized by, A plurality of wiring posts (8) are fixed on the wiring board (5), and the wiring posts (8) are located inside the wire passing port (3).

3. A water turbine generator lower bracket wiring structure according to claim 1, characterized by, A sealing ring placing groove one (9) matched with the sealing ring (6) is provided on the oil pool wall (2), one side of the sealing ring (6) is placed in the sealing ring placing groove one (9) and fixedly connected thereto, and an inner side wall of the wiring board (5) is provided with a sealing ring placing groove two (10) matched with the sealing ring (6), the other side of the sealing ring (6) is placed in the sealing ring placing groove two (10).

4. A water turbine generator lower bracket wiring structure according to any one of claims 1 to 3, characterized in that, A guide post one (11) and a guide post two (12) are installed on the limiting frame (4), the guide post one (11) and the guide post two (12) are respectively placed on the left and right sides of the wiring board (5) and parallel to each other, the pressing plate (7) is placed on the upper and lower sides of the wiring board (5), one side of the pressing plate (7) is sleeved on the guide post one (11) and movably connected thereto, the other side of the pressing plate (7) is sleeved on the guide post two (12) and movably connected thereto, one side of the pressing plate (7) facing the wiring board (5) is provided with an inclined guide surface one, the inclined guide surface one is inclined from one end close to the wire passing port (3) to the other end away from the wire passing port (3) towards the wiring board (5), and an outer side wall of the wiring board (5) is provided with an inclined guide surface two matched with the inclined guide surface one.

5. A water turbine generator lower bracket wiring structure according to claim 4, characterized by A guide post mounting seat one (13) is fixed on the limiting frame (4), the guide post mounting seat one (13) is respectively placed at both ends of the guide post one (11), the end of the guide post one (11) is mounted on the guide post mounting seat one (13) and fixedly connected thereto, and the pressing plate (7) is provided with a guide through hole (14) matched with the guide post one (11), the guide post one (11) is placed in the guide through hole (14) and slidably connected thereto.

6. A water turbine generator lower bracket wiring structure according to claim 4, characterized by The limiting frame (4) is fixed with a guide column mounting seat two (15), the guide column mounting seat two (15) is respectively arranged at the two ends of the guide column one (11), the end of the guide column two (12) is mounted on the guide column mounting seat two (15) and is rotationally connected, the upper and lower sides of the guide column two (12) are respectively provided with an outer thread area one (16) and an outer thread area two (17), the spiral direction of the outer thread area one (16) and the spiral direction of the outer thread area two (17) are oppositely arranged, one of the pressing plates (7) is provided with an inner thread hole one (18) matched with the outer thread area one (16), one of the pressing plates (7) is threadedly connected with the guide column two (12) through the cooperation of the inner thread hole one (18) and the outer thread area one (16), the other pressing plate (7) is provided with an inner thread hole two (19) matched with the outer thread area two (17), the other pressing plate (7) is threadedly connected with the guide column two (12) through the cooperation of the inner thread hole two (19) and the outer thread area two (17).

7. A water turbine generator lower bracket wiring structure according to claim 6, characterized by The end of the guide column two (12) is fixed with a rotating block (20), the guide column mounting seat two (15) is provided with a rotating block mounting groove (21) matched with the rotating block (20), the rotating block (20) is arranged in the rotating block mounting groove (21) and rotationally connected therewith.

8. A water turbine generator lower bracket wiring structure according to claim 7, characterized by The side wall of the rotating block (20) is provided with an annular groove (22), the bottom surface of the annular groove (22) is fixed with an annular rack (23), the side wall of the rotating block mounting groove (21) is fixed with a lock pin through hole (24), the lock pin through hole (24) is provided with a locking pin (25), the locking pin (25) is located outside the annular groove (22) and is slidably connected with the lock pin through hole (24), one end of the locking pin (25) opposite to the annular rack (23) is provided with a lock tooth (26), the lock tooth (26) and the annular rack (23) are clamped.

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