Hydraulic turbine pressure regulating valve

Abstract

The utility model relates to the technical field of pressure regulating valve, concretely is a kind of water turbine pressure regulating valve, including valve shell and telescopic air cylinder, the surface of valve shell is integrally connected with fixed cylinder, the output shaft of telescopic air cylinder is fixedly connected with control rod, the surface of control rod is movably connected with articulated rod, the inside of valve shell is connected with control board by torsion spring, the inner wall of valve shell is fixedly connected with limit block, the surface of control rod is fixedly connected with cable, the inside of valve shell is provided with buffer plate, the surface of buffer plate is fixedly connected with connecting cable, the surface of connecting cable is fixedly connected with connecting column. The utility model is connected through control rod and cable, under the connection of connecting column and connecting cable, the connection of connecting cable and buffer plate, change the action position of control rod, realize the control effect of the action angle of buffer plate in valve shell, further improve the control use effect and performance to water flow and water pressure.

Description

Technical Field

[0001] This utility model relates to the field of pressure regulating valve technology, specifically a pressure regulating valve for a water turbine. Background Technology

[0002] The pressure regulating valve of a water turbine controls the outlet water flow and pressure, regulates the load and operating conditions of the water turbine, and ensures the safe and stable operation of the water turbine. However, when using existing pressure regulating valves, the regulation of water flow and pressure can often only be achieved by controlling the angle of the baffle. When the water flows down, it will still generate a large impact force due to its gravity. Moreover, when connecting the pressure regulating valve, it is often sealed with a sealing ring. If misalignment or loose connection occurs, water leakage can easily occur. Utility Model Content

[0003] The purpose of this utility model is to provide a water turbine pressure regulating valve to solve the problem mentioned in the background art that, even when the water is controlled by the angle of the diaphragm, it still generates a large impact force due to the influence of gravity when the water flows down.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a pressure regulating valve for a water turbine, comprising a valve housing and a telescopic cylinder. A fixed cylinder is integrally connected to the surface of the valve housing. A control rod is fixedly connected to the output shaft of the telescopic cylinder. A hinge rod is movably connected to the surface of the control rod. A regulating plate is connected to the inside of the valve housing via a torsion spring. A limit block is fixedly connected to the inner wall of the valve housing. A cable is fixedly connected to the surface of the control rod. A buffer plate is provided inside the valve housing. A connecting cable is fixedly connected to the surface of the buffer plate. A connecting post is fixedly connected to the surface of the connecting cable. The connecting post and the cable are fixedly connected. A connecting groove is provided on the outer surface of the valve housing. A sealing ring is fitted into the connecting groove on the outer surface of the valve housing. A connecting pipe is connected to the surface of the sealing ring. An air bladder is connected to the surface of the connecting pipe. A placement frame is fixedly connected to the inner wall of the valve housing. A stop plate is provided on the surface of the placement frame. A clamping plate is provided on the inner wall of the connecting groove. A support spring is fixedly connected to the surface of the clamping plate. A stop block is fixedly connected to the surface of the support spring.

[0005] Preferably, the telescopic cylinder is fixedly connected by bolts and a fixed cylinder, the hinge rod is movably connected to the control plate, and the limiting blocks are arranged in two sets, one above the other, on opposite sides of the control plate.

[0006] Preferably, the sealing ring is connected to the airbag via a connecting pipe, the airbag acts inside the valve housing via a placement bracket, and the surface of the placement bracket is provided with a through hole.

[0007] Preferably, the abutment and the placement frame are elastically connected, one end of the abutment is connected to the inner wall of the placement frame, and the other end of the abutment is in contact with the outer surface of the airbag.

[0008] Preferably, the clamping plates are evenly distributed inside the connecting groove, the abutment is elastically connected to the clamping plates by a support spring, and the abutment is in contact with the inner wall of the connecting groove by the clamping plates.

[0009] Preferably, the clamping plate and the outer surface of the sealing ring abut against each other, the buffer plate is evenly distributed inside the valve body, and the buffer plate is fan-shaped.

[0010] Preferably, the connecting cable and the buffer plate are connected accordingly, and the cable is fixedly connected to the buffer plate through the connecting post and the connecting cable.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. By connecting the telescopic cylinder and the fixed cylinder, and then connecting the control rod and the hinge rod, and finally the control plate, the angle of the control plate within the valve body can be adjusted, thereby controlling the water flow and pressure. Through the connection of the control rod and the cable, and then the connection of the connecting column and the cable, and finally the connection of the cable and the buffer plate, the position of the control rod can be changed, further improving the angle of the buffer plate within the valve body and enhancing the control effect and performance of water flow and pressure.

[0013] 2. Through the connection between the valve body and the connecting groove, and the connection between the clamping plate and the support spring, the clamping plate provides a supporting effect for the sealing ring at its position within the connecting groove. The connection between the sealing ring and the connecting pipe, and the passageway between the connecting pipe and the air bladder, allows for the regulation of the sealing ring's volume, improving the sealing performance of the valve body during installation. The placement bracket and the supporting plate facilitate the placement of the air bladder within the valve body, preventing it from falling off due to water flow impact and affecting its normal use. Attached Figure Description

[0014] Figure 1 This is a three-dimensional front view of the structure of this utility model;

[0015] Figure 2 This is a frontal three-dimensional sectional view of the structure of this utility model;

[0016] Figure 3 This is a partial frontal perspective view of the structure of this utility model;

[0017] Figure 4 This utility model Figure 2 A three-dimensional schematic diagram of the connection structure between the central control lever and the control plate;

[0018] Figure 5This utility model Figure 3 Partial three-dimensional sectional view of the connection structure between the sealing ring and the valve body;

[0019] Figure 6 This utility model Figure 5 A magnified structural diagram of point A in the middle.

[0020] In the diagram: 1. Valve housing; 11. Connecting groove; 2. Fixed cylinder; 3. Telescopic cylinder; 31. Control rod; 32. Hinge rod; 4. Control plate; 41. Limiting block; 5. Sealing ring; 51. Connecting pipe; 52. Airbag; 53. Placement rack; 54. Support plate; 55. Clamping plate; 56. Support spring; 57. Support block; 6. Buffer plate; 61. Connecting column; 62. Cable; 63. Connecting rope. Detailed Implementation

[0021] Please see Figure 1-6 One embodiment provided by this utility model:

[0022] A pressure regulating valve for a water turbine includes a valve housing 1 and a telescopic cylinder 3. A fixed cylinder 2 is integrally connected to the surface of the valve housing 1. A control rod 31 is fixedly connected to the output shaft of the telescopic cylinder 3. A hinge rod 32 is movably connected to the surface of the control rod 31. A regulating plate 4 is connected to the inside of the valve housing 1 via a torsion spring. A limit block 41 is fixedly connected to the inner wall of the valve housing 1. A cable 62 is fixedly connected to the surface of the control rod 31. A buffer plate 6 is provided inside the valve housing 1. A connecting cable 63 is fixedly connected to the surface of the buffer plate 6. A connecting post 61 is fixedly connected to the surface of the connecting cable 63. The connecting post 61 and the cable 62 are fixedly connected. A connecting groove 11 is formed on the outer surface of the valve housing 1. The outer surface of the valve housing 1 is connected via a connecting groove 11. A sealing ring 5 is fitted into the groove 11. A connecting pipe 51 is connected to the surface passage of the sealing ring 5. An air bladder 52 is connected to the surface passage of the connecting pipe 51. A placement rack 53 is fixedly connected to the inner wall of the valve body 1. A stop plate 54 is provided on the surface of the placement rack 53. A clamping plate 55 is provided on the inner wall of the connecting groove 11. A support spring 56 is fixedly connected to the surface of the clamping plate 55. A stop block 57 is fixedly connected to the surface of the support spring 56. Through the connection of the telescopic cylinder 3 and the control rod 31, the angle of action of the control plate 4 in the valve body 1 can be adjusted under the rotational connection of the hinge rod 32 and the control plate 4. The telescopic cylinder 3 is an existing product, and its principle is existing technology, so it will not be described in detail here.

[0023] Furthermore, the telescopic cylinder 3 is fixedly connected to the fixed cylinder 2 by bolts, the hinge rod 32 is movably connected to the control plate 4, and the limit blocks 41 are distributed in two sets on opposite sides of the control plate 4. Through the connection between the valve shell 1 and the fixed cylinder 2, the fixed cylinder 2 provides support for the telescopic cylinder 3. Through the connection between the control plate 4 and the hinge rod 32, the control rod 31 is connected to the telescopic cylinder 3, changing the position of the control rod 31 within the valve shell 1, thereby controlling the angle of the control plate 4 within the valve shell 1. Under the action of the limit blocks 41, the rotation direction of the control plate 4 can be controlled.

[0024] Furthermore, the sealing ring 5 is connected to the air bladder 52 via the connecting pipe 51. The air bladder 52 acts inside the valve body 1 via the placement bracket 53. The surface of the placement bracket 53 has through holes. Through the connection between the sealing ring 5 and the connecting pipe 51, and with the passage connection between the connecting pipe 51 and the air bladder 52, the gas inside the air bladder 52 is squeezed and enters the sealing ring 5, thereby changing the working volume of the sealing ring 5 and improving the overall sealing performance of the valve body 1 during installation.

[0025] Furthermore, the abutment plate 54 and the placement frame 53 are elastically connected. One end of the abutment plate 54 is connected to the inner wall of the placement frame 53, and the other end of the abutment plate 54 is in contact with the outer surface of the airbag 52. Through the connection between the placement frame 53 and the abutment plate 54, the placement frame 53 facilitates the limitation of the position of the airbag 52 in the valve housing 1. Under the action of the abutment plate 54, the support effect of the airbag 52 in the position of action in the placement frame 53 is achieved, thereby improving the stability of the airbag 52 in placement and use.

[0026] Furthermore, the clamping plates 55 are evenly distributed inside the connecting groove 11, and the abutment 57 is elastically connected to the clamping plates 55 through the support spring 56. The abutment 57 abuts against the inner wall of the connecting groove 11 through the clamping plates 55. Through the connection between the connecting groove 11 and the clamping plates 55, and the connection between the support spring 56 and the abutment 57, the elastic control effect of the angle of action of the clamping plates 55 in the connecting groove 11 is achieved. Under the abutting contact between the clamping plates 55 and the sealing ring 5, the stability performance of the sealing ring 5 in the position of action in the connecting groove 11 is improved.

[0027] Furthermore, the outer surfaces of the clamping plate 55 and the sealing ring 5 abut against each other, and the buffer plates 6 are evenly distributed inside the valve body 1. The buffer plates 6 are fan-shaped, and the connecting cable 63 is connected to the buffer plates 6. The pull cable 62 is fixedly connected to the buffer plates 6 through the connecting post 61 and the connecting cable 63. Through the connection of the valve body 1 and the buffer plates 6, the connection of the connecting post 61 and the connecting post 63, the connection of the connecting post 61 and the pull cable 62, and the connection of the pull cable 62 and the control rod 31, when the control rod 31 adjusts the angle of action of the control plate 4, the buffer plates 6 change their angle of action under the pull of the pull cable 62, thereby blocking the impact of the falling water flow and achieving the buffering effect. The larger the rotation angle of the control plate 4, the smaller the angle of action between the buffer plates 6.

[0028] Working principle: When adjusting the water flow and pressure, the telescopic cylinder 3 pulls the control rod 31. Under the rotational connection of the control plate 4 and the hinge rod 32, the angle of action of the control plate 4 within the valve body 1 is changed, thus controlling the water flow and pressure. When the position of the control rod 31 changes, the pull cable 62 and connecting cable 63 pull the buffer plate 6, changing its angle of action within the valve body 1, thereby buffering the falling water flow. The effect further improves the performance of water flow and pressure control. When the valve body 1 is used and installed, the sealing ring 5 and the connecting groove 11 are fitted together, and the clamping plate 55 abuts against the sealing ring 5, so that the sealing ring 5 is stably installed on the valve body 1. When the water flow impacts the air bag 52, the gas in the air bag 52 enters the sealing ring 5 through the connecting pipe 51. At this time, the working volume of the sealing ring 5 changes, improving its sealing performance. The greater the water flow impact, the better the sealing performance of the sealing ring 5.

Claims

1. A pressure regulating valve for a water turbine, comprising a valve body and a telescopic cylinder, characterized in that: A fixed cylinder is integrally connected to the surface of the valve housing. A control rod is fixedly connected to the output shaft of the telescopic cylinder. A hinge rod is movably connected to the surface of the control rod. An adjustment plate is connected to the inside of the valve housing via a torsion spring. A limit block is fixedly connected to the inner wall of the valve housing. A pull cable is fixedly connected to the surface of the control rod. A buffer plate is provided inside the valve housing. A connecting cable is fixedly connected to the surface of the buffer plate. A connecting post is fixedly connected to the surface of the connecting cable. The connecting post and the pull cable are fixedly connected. A connecting groove is opened on the outer surface of the valve housing. A sealing ring is fitted into the outer surface of the valve housing through the connecting groove. A connecting pipe is connected to the surface passage of the sealing ring. An air bladder is connected to the surface passage of the connecting pipe. A placement frame is fixedly connected to the inner wall of the valve housing. A stop plate is provided on the surface of the placement frame. A clamping plate is provided on the inner wall of the connecting groove. A support spring is fixedly connected to the surface of the clamping plate. A stop block is fixedly connected to the surface of the support spring.

2. The turbine pressure regulating valve according to claim 1, characterized in that: The telescopic cylinder is fixedly connected by bolts and a fixed cylinder, the hinge rod is movably connected to the control plate, and the limiting blocks are arranged in two sets, one above the other, on opposite sides of the control plate.

3. A turbine pressure regulating valve according to claim 1, characterized in that: The sealing ring is connected to the airbag via a connecting pipe. The airbag acts inside the valve housing via a placement frame, and the surface of the placement frame has through holes.

4. A turbine pressure regulating valve according to claim 1, characterized in that: The support plate and the placement frame are elastically connected. One end of the support plate is connected to the inner wall of the placement frame, and the other end of the support plate is in contact with the outer surface of the airbag.

5. A turbine pressure regulating valve according to claim 1, characterized in that: The clamping plates are evenly distributed inside the connecting groove, and the abutment is elastically connected to the clamping plates by a support spring. The abutment is in contact with the inner wall of the connecting groove through the clamping plates.

6. A turbine pressure regulating valve according to claim 1, characterized in that: The clamping plate and the outer surface of the sealing ring abut against each other, and the buffer plate is evenly distributed inside the valve body, and the buffer plate is fan-shaped.

7. A turbine pressure regulating valve according to claim 1, characterized in that: The connecting cable and the buffer plate are connected accordingly, and the cable is fixedly connected to the buffer plate through the connecting post and the connecting cable.

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