A mounting structure of a quick gate of a water turbine set

Abstract

This invention discloses an installation structure for a quick-release gate on the intake pipe of a hydroelectric turbine unit, including an installation frame with an inner cavity. A water inlet communicating with the inner cavity is provided through the installation frame. A gate is slidably connected within the inner cavity, and guide rollers abutting against the inner wall of the inner cavity are installed on the gate. A driving component for moving the gate up and down is installed within the inner cavity. A flow guide groove is provided at the bottom of the gate, and a flow guide protection plate is rotatably connected within the flow guide groove. When the gate is open, the sealing airbag can be retracted for protection, and the flow guide protection plate tilts, thus protecting the gate and increasing its service life. When the gate is closed, the flow guide plate is vertical, and the sealing airbag expands to ensure the gate's sealing performance. Furthermore, impurities within the inner cavity can be cleaned to prevent affecting the seal between the gate and the inner cavity without manual cleaning. The flow guide plate can also be locked to prevent damage from prolonged water pressure.

Description

Technical Field

[0001] This invention relates to the field of gate installation technology, and in particular to an installation structure for a quick-release gate for a turbine unit's intake pipe. Background Technology

[0002] Hydroelectric generator sets, also known as "water turbine generator sets," are power generation units composed of each turbine and its associated generator on a hydroelectric power station. They are the main power equipment for producing electricity at the hydroelectric power station. When the water flowing through the turbine passes through the hydroelectric power station, it converts the water energy into mechanical energy to drive the machinery to rotate; the generator then converts the mechanical energy into electrical energy for output.

[0003] When a hydroelectric generator set is working, water needs to be guided to the generator set through a water intake pipe. The water flow is used as power to enable the generator to work and generate electricity. The water intake pipe needs a corresponding gate to control whether the hydroelectric generator is working. For example, the water flow needs to be blocked when the hydroelectric generator is being repaired. Because there is a certain height difference between the hydroelectric generator set and the water intake pipe, when the gate is raised, the water pressure at the bottom is high and the water flow speed is fast, which causes greater damage to the bottom part of the gate. Over time, this can easily lead to damage to the gate or a decrease in its sealing performance. Summary of the Invention

[0004] The purpose of this invention is to solve the above-mentioned technical problems by proposing an installation structure for a quick-release gate for the water intake pipe of a water turbine unit.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An installation structure for a quick-release gate for a turbine generator's intake pipe includes an installation frame with an inner cavity. A water inlet communicating with the inner cavity is provided through the installation frame. A gate is slidably connected within the inner cavity. Guide rollers abutting against the inner wall of the inner cavity are installed on the gate. A driving component for moving the gate up and down is installed within the inner cavity. A flow guide groove is provided at the bottom of the gate. A flow guide protection plate is rotatably connected within the flow guide groove. A positioning plate is fixedly connected to the gate. Two first piston cylinders are fixedly connected to the positioning plate. A first piston is slidably connected within each first piston cylinder. A fixing rod is fixedly connected to the upper end of each first piston, passing through the upper end of the first piston cylinder and slidably sealing it. A driving mechanism connected to the first piston cylinder and driving the flow guide protection plate is installed at the bottom of the positioning plate. A sealing airbag is installed on the vertical inner wall of the inner cavity, abutting against the side wall of the gate. The sealing airbag is connected to the first piston cylinder via a first connecting pipe. An air replenishment mechanism is installed on the first piston cylinder.

[0007] Preferably, the driving mechanism includes a second piston cylinder fixed to the bottom of the positioning plate. The second piston cylinder is connected to two first piston cylinders respectively through two second connecting pipes. A second piston is slidably connected inside the second piston cylinder. A moving rod is fixedly connected to the bottom of the second piston. A first rack plate is fixedly connected to both sides of the moving rod. Two positioning blocks are fixedly connected to the outer wall of the second piston cylinder. A rectangular rod is slidably connected through both positioning blocks. A second rack plate is fixedly connected to the rectangular rod. Two transmission gears are rotatably connected to the gate. The first rack plate and the second rack plate are located on both sides of the transmission gears and mesh with each other. An arc-shaped block is fixedly connected to the bottom of both rectangular rods. The arc-shaped block abuts against the flow guide protection plate.

[0008] Preferably, a guide ring is fixedly connected inside the second piston cylinder, the inner wall of the guide ring is rectangular, and the moving rod is rectangular.

[0009] Preferably, the rear sidewall of the gate slides against the inner wall of the cavity, and the thickness of the gate is less than the thickness of the cavity.

[0010] Preferably, the mounting frame has a chamber, the inner chamber is connected to the chamber through a plurality of first mounting tubes, each of the plurality of first mounting tubes is equipped with a first pressure relief valve, the sealing airbag is connected to the chamber through a second mounting tube, the second mounting tube is equipped with a second pressure relief valve, and the first piston cylinder is equipped with a gas replenishment mechanism.

[0011] Preferably, the air replenishment mechanism includes a short pipe mounted on the first piston cylinder, and a one-way valve is installed on the short pipe.

[0012] Preferably, a driving airbag is fixedly connected to the positioning block, a pressure plate opposite to the driving airbag is fixedly connected to the upper end of the rectangular rod, a locking groove is provided on the inner wall of the flow guide groove, a sliding groove is provided on the flow guide protection plate, a third piston is slidably connected in the sliding groove, a locking block is fixedly connected to the third piston, the locking block is movably inserted into the locking groove, and the driving airbag is connected to the sliding groove through a third connecting pipe.

[0013] Preferably, the pressure plate is located above the driving airbag, and the pressure plate does not contact the driving airbag.

[0014] Preferably, a return spring is installed inside the drive airbag, and the return spring is spirally wrapped inside the drive airbag.

[0015] Preferably, the third connecting pipe is a flexible hose.

[0016] Compared with the prior art, the beneficial effects of this invention are as follows:

[0017] 1. When the driving component works, it moves the positioning plate and gate upward, which can draw the air in the sealing airbag into the first piston cylinder. The sealing airbag no longer expands and is stored in the inner cavity. This can prevent sharp objects such as stones in the water flow from puncturing the sealing airbag and thus protect the sealing airbag.

[0018] 2. The second piston, the moving rod, and the first rack plate move downwards, which allows the second rack plate, the rectangular rod, and the arc-shaped block to move upwards. As the arc-shaped block moves upwards and is under water pressure, the flow guide plate abuts against the arc-shaped block and rotates, so that the flow guide plate is in an inclined state. This not only guides the flow but also directly avoids water pressure and water impact, reducing damage to the gate and protecting the gate.

[0019] 3. The driving component drives the positioning plate and the gate to move down. It can inflate the sealing airbag through the first connecting pipe. The driving component drives the gate to abut against the inner wall of the cavity and against the sealing airbag to ensure the sealing performance of the gate after it is closed.

[0020] 4. The air discharged through the first pressure relief valve blows the debris in the inner cavity upwards and eventually flows away with the water flow. This ensures a stable seal between the gate and the inner cavity, and the sealing effect will not be affected by debris, eliminating the need for manual cleaning.

[0021] 5. The pressure plate squeezes and drives the airbag to move downward. The airbag delivers air to the sliding groove through the third connecting pipe. The increased pressure in the sliding groove drives the third piston to move, ultimately locking the lock block in the lock groove. This locks and protects the flow guide plate, providing stable support and preventing damage from prolonged water pressure.

[0022] In summary, when the gate is opened, the sealing airbag can be housed and protected, and the flow guide plate can be tilted to protect the gate and increase its service life. When the gate is closed, the flow guide plate is kept vertical and the sealing airbag is expanded to ensure the gate's sealing performance. In addition, impurities in the inner cavity can be cleaned to prevent them from affecting the sealing performance between the gate and the inner cavity without manual cleaning. The flow guide plate can also be locked to prevent damage from prolonged water pressure. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the installation structure of a quick-release gate for the water intake pipe of a water turbine unit as proposed in Example 1;

[0024] Figure 2 This is a schematic diagram of the second piston cylinder in the installation structure of the quick gate of the water intake pipe of a water turbine unit proposed in Example 1;

[0025] Figure 3 This is a schematic diagram of the mounting frame in the mounting structure of the quick gate for the water intake pipe of a water turbine unit proposed in Example 1;

[0026] Figure 4 This is a cross-sectional view of the mounting frame in the mounting structure of the quick gate for the water intake pipe of a water turbine unit proposed in Example 1;

[0027] Figure 5 This is a schematic diagram of the arc-shaped block in the installation structure of the quick-release gate for the water intake pipe of a water turbine unit proposed in Example 1;

[0028] Figure 6 This is a schematic diagram of the installation structure of a quick-release gate for the water intake pipe of a water turbine unit, as proposed in Example 2.

[0029] Figure 7 This is a schematic diagram of the structure at point A in the installation structure of the quick-release gate for the water intake pipe of a water turbine unit proposed in Example 2;

[0030] Figure 8 This is a schematic diagram of the installation structure of a quick-release gate for the water intake pipe of a water turbine unit, as proposed in Example 3.

[0031] Figure 9 This is a schematic diagram of point B in the installation structure of the quick gate for the water intake pipe of a water turbine unit proposed in Example 3.

[0032] In the diagram: 1. Mounting frame; 2. Inner cavity; 3. Driving component; 4. First piston cylinder; 5. Sealing block; 6. First piston; 7. Fixing rod; 8. First connecting pipe; 9. Positioning plate; 10. Second connecting pipe; 11. Guide groove; 12. Gate; 13. Guide roller; 14. Sealing airbag; 15. Guide protection plate; 16. Water inlet; 17. Positioning block; 18. Second piston cylinder; 19. Second piston; 20. Guide ring; 21. Rectangular rod; 22. Moving rod; 23. First rack plate; 24. Second rack plate; 25. Transmission gear; 26. Arc block; 27. Chamber; 28. First pressure relief valve; 29. ​​Second pressure relief valve; 30. Short pipe; 31. One-way valve; 32. Pressure plate; 33. Driving airbag; 34. Third connecting pipe; 35. Lock groove; 36. Locking block; 37. Third piston; 38. Sliding groove. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0034] Example 1

[0035] Reference Figure 1-5An installation structure for a quick-release gate for a turbine generator inlet pipe includes an installation frame 1, an inner cavity 2 within the installation frame 1, a water inlet 16 communicating with the inner cavity 2 through the installation frame 1, a gate 12 slidably connected within the inner cavity 2, the gate 12 blocking the water inlet 16, wherein the rear sidewall of the gate 12 slides against the inner wall of the inner cavity 2, and the thickness of the gate 12 is less than the thickness of the inner cavity 2; guide rollers 13 are installed on the gate 12, abutting against the inner wall of the inner cavity 2, ensuring stable sliding of the gate 12 while ensuring stable abutment between the gate 12 and the inner wall of the inner cavity 2; a driving component 3 for driving the gate 12 to move up and down is installed within the inner cavity 2, the driving component 3 being a hydraulic cylinder or an electric push rod;

[0036] The bottom of the gate 12 is provided with a flow guide groove 11, and a flow guide protection plate 15 is rotatably connected inside the flow guide groove 11. The flow guide protection plate 15 can only rotate forward; wherein, Figure 1 The following is a rear view of the mounting frame 1 and the gate 12. A positioning plate 9 is fixedly connected to the gate 12. Two first piston cylinders 4 are fixedly connected to the positioning plate 9. A first piston 6 is slidably connected inside the first piston cylinder 4. A fixing rod 7 is fixedly connected to the upper end of the first piston 6. The fixing rod 7 passes through the upper end of the first piston cylinder 4 and is slidably sealed. A sealing block 5 is fixedly connected to the upper end of the first piston cylinder 4. The fixing rod 7 passes through the sealing block 5 and is movably sealed.

[0037] A drive mechanism connected to the first piston cylinder 4 and driving the flow guide protection plate 15 is installed at the bottom of the positioning plate 9. The drive mechanism includes a second piston cylinder 18 fixed to the bottom of the positioning plate 9. The second piston cylinder 18 is connected to the two first piston cylinders 4 respectively through two second connecting pipes 10. A second piston 19 is slidably connected inside the second piston cylinder 18. A moving rod 22 is fixedly connected to the bottom of the second piston 19. A guide ring 20 is fixedly connected inside the second piston cylinder 18. The inner wall of the guide ring 20 is rectangular. The moving rod 22 is also rectangular, which ensures movement. The rod 22 slides stably; both sides of the moving rod 22 are fixedly connected to the first rack plate 23, and the outer wall of the second piston cylinder 18 is fixedly connected to two positioning blocks 17. The two positioning blocks 17 are slidably connected to the rectangular rod 21 through the top and bottom. The rectangular rod 21 is fixedly connected to the second rack plate 24. The gate 12 is rotatably connected to two transmission gears 25. The first rack plate 23 and the second rack plate 24 are located on both sides of the transmission gears 25 and mesh with each other. The bottom of the two rectangular rods 21 is fixedly connected to the arc block 26, and the arc block 26 is set to abut against the flow guide protection plate 5.

[0038] A sealing airbag 14 is installed on the vertical inner wall of the inner cavity 2. The sealing airbag 14 abuts against the side wall of the gate 12, and the sealing airbag 14 is connected to the first piston cylinder 4 through the first connecting pipe 8.

[0039] In this embodiment, when it is necessary to open the gate 12, the drive unit 3 is activated. The drive unit 3 works to drive the positioning plate 9 and the gate 12 to move upward, that is, the first piston 6 and the first piston cylinder 4 slide relative to each other. The first piston 6 moves downward in the first piston cylinder 4. The air in the sealing airbag 14 can be drawn into the first piston cylinder 4 through the first connecting pipe 8. That is, the sealing airbag 14 no longer expands and is stored in the inner cavity 2. This can prevent sharp objects such as stones in the water flow from puncturing the sealing airbag 14 and achieve protection for the sealing airbag 14.

[0040] Simultaneously, the downward movement of the first piston 6 can transport the air in the first piston cylinder 4 to the second piston cylinder 18 through the second connecting pipe 10, thereby enabling the second piston 19, the moving rod 22, and the first rack plate 23 to move downward. The downward movement of the first rack plate 23 drives the transmission gear 25 to rotate, thereby enabling the second rack plate 24, the rectangular rod 21, and the arc block 26 to move upward. As the arc block 26 moves upward and is under water pressure, the flow guide protection plate 15 abuts against the arc block 26 and rotates until the arc block 26 comes to a stop. In this way, the flow guide protection plate 15 is in an inclined state, which not only plays a role in guiding the flow but also directly avoids water pressure and water impact, reduces damage to the gate 12, and achieves protection for the gate 12.

[0041] When it is necessary to close the gate 12, the driving component 3 drives the positioning plate 9 and the gate 12 to move downward, and the first piston 6 moves upward inside the first piston cylinder 4. It can inflate the sealing airbag 14 through the first connecting pipe 8. Then the arc block 26 moves downward and drives the flow guide protection plate 15 to rotate until it is in a vertical state. Finally, the driving component 3 drives the gate 12 to abut against the inner wall of the inner cavity 2 and against the sealing airbag 14 to ensure the sealing of the gate 12 after it is closed.

[0042] Example 2

[0043] Reference Figure 6-7 The difference between this embodiment and embodiment 1 is that the mounting frame 1 in this embodiment is provided with a chamber 27, and the inner cavity 2 is connected to the chamber 27 through multiple first mounting tubes. Each of the multiple first mounting tubes is equipped with a first pressure relief valve 28. The sealing airbag 17 is connected to the chamber 27 through a second mounting tube. The second mounting tube is equipped with a second pressure relief valve 29. The first piston cylinder 4 is provided with a gas replenishment mechanism. The gas replenishment mechanism includes a short pipe 30 installed on the first piston cylinder 4. A one-way valve 31 is installed on the short pipe 30.

[0044] As can be seen from Example 1, when the first piston 6 moves downward inside the first piston cylinder 4, it can draw air from the sealing airbag 14 into the first piston cylinder 4. Finally, due to the negative pressure in the first piston cylinder 4, the one-way valve 31 opens, and external air (water is behind the gate 12) enters the first piston cylinder 4 through the short pipe 30 to replenish the air. When the first piston 6 moves upward inside the first piston cylinder 4, since the amount of air in the first piston cylinder 4 is greater than the amount of air in the sealing airbag 14, the sealing airbag 14 eventually expands and is then inflated. The second pressure relief valve 29 opens and fills the chamber 27, increasing the pressure inside the chamber 27. Finally, the pressure is discharged through the first pressure relief valve 28. As the gate 12 approaches the bottom of the inner cavity 2, the water flow speed increases, and the air discharged through the chamber 27 can blow and move the debris in the inner cavity 2 upward, eventually flowing away with the water flow. This ensures a stable seal between the gate 12 and the inner cavity 2, and the sealing effect will not be affected by debris, eliminating the need for manual cleaning.

[0045] Example 3

[0046] Reference Figure 8-9 The difference between this embodiment and embodiments 1 and 2 is that, in this embodiment, a driving airbag 33 is fixedly connected to the positioning block 17, a pressure plate 32 opposite to the driving airbag 33 is fixedly connected to the upper end of the rectangular rod 21, a locking groove 35 is provided on the inner wall of the flow guide groove 11, a sliding groove 38 is provided on the flow guide protection plate 15, a third piston 37 is slidably connected in the sliding groove 38, a locking block 36 is fixedly connected to the third piston 37, the locking block 36 is movably inserted into the locking groove 35, the driving airbag 33 is connected to the sliding groove 38 through the third connecting pipe 34, the pressure plate 32 is located above the driving airbag 33 and the pressure plate 32 does not contact the driving airbag 33, a return spring is installed in the driving airbag 33, and the return spring is spirally wrapped inside the driving airbag 33, and the third connecting pipe 34 is a flexible hose.

[0047] In this embodiment, when the rectangular rod 21 moves down, that is, when the gate 12 is closed, the second piston 19 and the rectangular rod 21 continue to move down due to gas drive after the gate 12 is closed. Finally, the pressure plate 32 squeezes the driving airbag 33 to move down. The driving airbag 33 delivers air to the sliding groove 38 through the third connecting pipe 34. The pressure in the sliding groove 38 increases, driving the third piston 37 to move. Finally, the locking block 36 is locked in the locking groove 35, which can lock and protect the flow guide protection plate 15, provide stable support for it, and prevent it from being damaged by water pressure for a long time.

[0048] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A structure for installing a rapid gate of a draft tube of a hydraulic turbine unit, comprising a mounting frame (1), characterized in that, The mounting frame (1) has an inner cavity (2), and a water inlet (16) communicating with the inner cavity (2) is provided through the mounting frame (1). A gate (12) is slidably connected in the inner cavity (2). A guide roller (13) is installed on the gate (12) and abuts against the inner wall of the inner cavity (2). A driving component (3) for driving the gate (12) to move up and down is installed in the inner cavity (2). A flow guide groove (11) is provided at the bottom of the gate (12). A flow guide protection plate (15) is rotatably connected in the flow guide groove (11). A positioning plate (9) is fixedly connected to the gate (12). Two... A first piston cylinder (4) is slidably connected to a first piston (6). A fixing rod (7) is fixedly connected to the upper end of the first piston (6). The fixing rod (7) passes through the upper end of the first piston cylinder (4) and is slidably sealed. A driving mechanism connected to the first piston cylinder (4) and driving the flow guide protection plate (15) is installed at the bottom of the positioning plate (9). A sealing airbag (14) is installed on the vertical inner wall of the inner cavity (2). The sealing airbag (14) abuts against the side wall of the gate (12). The sealing airbag (14) is connected to the first piston cylinder (4) through the first connecting pipe (8). The driving mechanism includes a second piston cylinder (18) fixed to the bottom of the positioning plate (9). The second piston cylinder (18) is connected to two first piston cylinders (4) respectively through two second connecting pipes (10). A second piston (19) is slidably connected inside the second piston cylinder (18). A moving rod (22) is fixedly connected to the bottom of the second piston (19). A first rack plate (23) is fixedly connected to both sides of the moving rod (22). Two positioning blocks are fixedly connected to the outer wall of the second piston cylinder (18). (17) Both of the positioning blocks (17) are provided with a rectangular rod (21) that is slidably connected through them. A second rack plate (24) is fixedly connected to the rectangular rod (21). Two transmission gears (25) are rotatably connected to the gate (12). The first rack plate (23) and the second rack plate (24) are located on both sides of the transmission gear (25) and mesh with each other. An arc block (26) is fixedly connected to the bottom of both rectangular rods (21). The arc block (26) is abutted against the flow guide protection plate (15). The mounting frame (1) is provided with a chamber (27). The inner cavity (2) is connected to the chamber (27) through multiple first mounting tubes. Each of the multiple first mounting tubes is equipped with a first pressure relief valve (28). The sealing airbag (14) is connected to the chamber (27) through a second mounting tube. A second pressure relief valve (29) is installed in the second mounting tube. The first piston cylinder (4) is provided with a gas replenishment mechanism. A driving airbag (33) is fixedly connected to the positioning block (17). A pressure plate (32) opposite to the driving airbag (33) is fixedly connected to the upper end of the rectangular rod (21). A locking groove (35) is provided on the inner wall of the flow guide groove (11). A sliding groove (38) is provided on the flow guide protection plate (15). A third piston (37) is slidably connected in the sliding groove (38). A locking block (36) is fixedly connected to the third piston (37). The locking block (36) is movably inserted into the locking groove (35). The driving airbag (33) is connected to the sliding groove (38) through the third connecting pipe (34).

2. The installation structure of a rapid gate of a draft tube of a hydraulic turbine unit according to claim 1, characterized in that, The second piston cylinder (18) is fixedly connected to a guide ring (20), the inner wall of the guide ring (20) is rectangular, and the moving rod (22) is rectangular.

3. The installation structure of the rapid gate of the draft tube of a hydraulic turbine unit according to claim 1, characterized in that, The rear sidewall of the gate (12) slides against the inner wall of the cavity (2), and the thickness of the gate (12) is less than the thickness of the cavity (2).

4. The installation structure of a rapid gate of a draft tube of a hydraulic turbine unit according to claim 1, characterized in that, The air replenishment mechanism includes a short pipe (30) installed on the first piston cylinder (4), and a one-way valve (31) is installed on the short pipe (30).

5. The installation structure of a rapid gate of a draft tube of a hydraulic turbine unit according to claim 1, characterized in that, The pressure plate (32) is located above the driving airbag (33), and the pressure plate (32) does not contact the driving airbag (33).

6. The installation structure of a rapid gate of a draft tube of a hydraulic turbine unit according to claim 1, characterized in that, A reset spring is installed inside the drive airbag (33), and the reset spring is spirally wrapped inside the drive airbag (33).

7. The installation structure of a rapid gate of a draft tube of a hydraulic turbine unit according to claim 1, characterized in that, The third connecting pipe (34) is a flexible hose.

Images