A vent valve for gas turbines

Abstract

This utility model discloses a venting valve for a gas turbine, including a venting valve body, an air inlet at one end of the venting valve body, a buffer column installed inside the venting valve body, a guide column slidably installed at one end of the buffer column, a spring sleeved on the side of the guide column, a piston plate installed at one end of the guide column, a through hole on the side of the piston plate, and hydraulic oil installed inside the buffer column. By setting the piston plate and through hole, when venting is required, one end of the push rod is subjected to a certain force, causing the buffer column to slide inside the venting valve body. One end of the sealing plate opens the closed air inlet, allowing gas to escape. Simultaneously, the spring is compressed, the piston plate slides inside the buffer column, and the hydraulic oil flows through the through hole on the piston plate. When the spring rebounds, the hydraulic oil flows back through the through hole. Because the diameter of the through hole is small, the spring rebounds with a certain buffer, preventing excessive rebound and improving the spring's service life.

Description

Technical Field

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

[0002] A gas turbine is a power unit that efficiently converts the chemical energy of fuel into mechanical energy. It mainly consists of three core components: a compressor, a combustion chamber, and a turbine. During operation, the compressor continuously draws in air and compresses it, increasing the air's pressure and temperature. The compressed air is then sent into the combustion chamber, where it mixes with and burns the injected fuel, producing a large amount of high-temperature, high-pressure gas. This high-temperature, high-pressure gas then expands at high speed, doing work and driving the turbine to rotate. The turbine then drives the compressor and its connected load to rotate together, thus continuously and stably converting the chemical energy in the fuel into useful mechanical energy, providing powerful power support for various application scenarios.

[0003] In existing gas turbine vent valves, one end of the internal piston is mostly sealed by a spring. The spring works in an environment of repeated compression and rebound. Over long-term use, as the temperature rises, the pressure on the spring increases. When the spring rebounds rapidly, it will cause certain metal fatigue, resulting in a reduction in the service life of the spring. Therefore, a new type of vent valve for gas turbines is needed to meet people's needs. Utility Model Content

[0004] The purpose of this invention is to provide a venting valve for gas turbines to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a venting valve for a gas turbine, comprising a venting valve body, an air inlet at one end of the venting valve body, a buffer column installed inside the venting valve body, a guide column slidably installed at one end of the buffer column, a spring sleeved on the side of the guide column, a piston plate installed at one end of the guide column, a through hole opened on the side of the piston plate, hydraulic oil installed inside the buffer column, a connecting plate installed at one end of the buffer column, a push rod installed at one end of the connecting plate, and a sealing plate installed on the side of the push rod.

[0006] Preferably, a sealing groove is provided at one end of the connecting plate, and a sealing ring is installed in the sealing groove.

[0007] Preferably, a valve body is installed at one end of the buffer column, a connector is installed at one end of the valve body, and a washer is installed at one end of the connector.

[0008] Preferably, one end of the spring is mounted on the inner wall of the buffer column, and the other end of the spring is mounted on the inner wall of the vent valve body.

[0009] Preferably, one end of the sealing plate is adapted to the air inlet, and the buffer column is slidably installed inside the vent valve body.

[0010] Preferably, one end of the connector is threaded onto the valve body, and the gasket is adapted to the valve body.

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

[0012] (1) By setting a piston plate and perforations, when air needs to be released, one end of the push rod is subjected to a certain force, which drives the buffer column to slide in the body of the air release valve. One end of the sealing plate opens the closed air inlet, allowing the gas to be discharged. At the same time, the spring is compressed, the piston plate slides in the buffer column, and the hydraulic oil flows through the perforations on the piston plate. When the spring rebounds, the hydraulic oil flows back through the perforations. Since the diameter of the perforations is small, the spring rebounds with a certain buffer and will not rebound too quickly, thus improving the service life of the spring.

[0013] (2) By setting a sealing groove and a sealing ring, when one end of the buffer column slides against the top rod, the hydraulic oil in the buffer column can flow effectively in the inner cavity of the buffer column through the sealing of the sealing ring, which helps to alleviate the damage caused by the excessive rebound of the spring. The gasket at one end of the connector protects the one end of the connector from damage, disperses the connection pressure on the valve body, and improves the applicability of the vent valve body. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of a vent valve for a gas turbine proposed in this utility model;

[0015] Figure 2 This is a cross-sectional structural diagram of a buffer column and spring structure for a gas turbine venting valve proposed in this utility model.

[0016] Figure 3 This is a structural diagram of a sealing groove and sealing ring for a vent valve of a gas turbine, as proposed in this utility model.

[0017] Figure 4 for Figure 2 Enlarged view of point A.

[0018] In the diagram: 1. Air release valve body; 2. Air inlet; 3. Buffer column; 4. Guide column; 5. Spring; 6. Piston plate; 7. Perforation; 8. Hydraulic oil; 9. Connecting plate; 10. Sealing groove; 11. Sealing ring; 12. Push rod; 13. Sealing plate; 14. Valve body; 15. Connector; 16. Washer. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Example 1: Please refer to Figure 1-4 This utility model provides a technical solution: a venting valve for a gas turbine, comprising a venting valve body 1, an air inlet 2 at one end of the venting valve body 1, a buffer column 3 installed inside the venting valve body 1, a guide column 4 slidably mounted at one end of the buffer column 3, a spring 5 sleeved on the side of the guide column 4, a piston plate 6 installed at one end of the guide column 4, a through hole 7 on the side of the piston plate 6, hydraulic oil 8 installed inside the buffer column 3, and a connecting plate 9 installed at one end of the buffer column 3. A push rod 12 is installed at one end, and a sealing plate 13 is installed on the side of the push rod 12. One end of the spring 5 is installed on the inner wall of the buffer column 3, and the other end of the spring 5 is installed on the inner wall of the vent valve body 1. One end of the sealing plate 13 is adapted to the air inlet 2. The buffer column 3 is slidably installed inside the vent valve body 1. One end of the connector 15 is threaded to the valve body 14. The washer 16 is adapted to the valve body 14. When the gas turbine is working, it needs to exhaust gas. This is achieved by controlling one end of the vent valve body 1 and connecting it to the push rod 12. The opposing forces cause the sealing plate 13 to move against the air inlet 2, allowing the gas to escape. When one end of the push rod 12 moves the sealing plate 13, it simultaneously pushes the buffer column 3 through the connecting plate 9, causing the buffer column 3 to slide within the vent valve body 1. The spring 5 at one end of the buffer column 3 is compressed, and the hydraulic oil 8 inside the buffer column 3 flows in the inner cavity. One end of the piston plate 6 is in contact with the inner wall of the inner cavity. When the hydraulic oil 8 flows, it flows through the perforation 7 on the piston plate 6, reducing the flow speed. After the venting is completed, the spring 5 rebounds, causing the buffer column 3 to return to its original position, thereby adjusting the sealing plate 13 at one end of the push rod 12 to seal the air inlet 2. When the spring 5 rebounds, the hydraulic oil 8 inside the buffer column 3 flows to the other end through the perforation 7. However, because the diameter of the perforation 7 is small, the flow rate of the hydraulic oil 8 is slow, thus reducing the rebound speed of the spring 5. By adjusting the size of the perforation 7, the flow speed of the hydraulic oil 8 can be adjusted, thereby adjusting the rebound speed of the spring 5 and helping to extend the service life of the spring 5.

[0021] Example 2: Figure 2 and 3As shown, a sealing groove 10 is provided at one end of the connecting plate 9, and a sealing ring 11 is installed in the sealing groove 10. A valve body 14 is installed at one end of the buffer column 3, and a connector 15 is installed at one end of the valve body 14. A gasket 16 is installed at one end of the connector 15. When the hydraulic oil 8 in the buffer column 3 flows, it provides an effective seal through the sealing ring 11 in the sealing groove 10, making it easier for the buffer column 3 to return to its original position. The gasket 16 at one end of the valve body 14 protects one end of the connector 15 from damage and disperses the connection pressure on the valve body 14, improving the applicability of the vent valve body 1. The remaining features are the same as in Embodiment 1.

[0022] The working principle is as follows: When the gas turbine is working, it needs to exhaust gas. By controlling one end of the exhaust valve body 1 and abutting against the push rod 12, the sealing plate 13 moves against the air inlet 2, allowing the gas to be discharged. When one end of the push rod 12 moves the sealing plate 13, it simultaneously pushes the buffer column 3 through the connecting plate 9, causing the buffer column 3 to slide within the exhaust valve body 1. The spring 5 at one end of the buffer column 3 is compressed, and the hydraulic oil 8 inside the buffer column 3 flows in the inner cavity. One end of the piston plate 6 is in contact with the inner wall of the inner cavity. When the hydraulic oil 8 flows, it flows through the perforation 7 on the piston plate 6, reducing the flow speed. After the exhaust is completed, the spring 5 rebounds, causing the buffer column 3 to return to its original position, thereby adjusting the sealing plate 13 at one end of the push rod 12. The sealing plate 13 seals the air inlet 2. When the spring 5 rebounds, the hydraulic oil 8 in the buffer column 3 flows to the other end through the perforation 7. However, due to the small diameter of the perforation 7, the flow rate of the hydraulic oil 8 is slow, thus reducing the rebound speed of the spring 5. When the hydraulic oil 8 in the buffer column 3 flows, it provides an effective seal through the sealing ring 11 in the sealing groove 10, making it easier for the buffer column 3 to return to its original position. The gasket 16 at one end of the valve body 14 protects one end of the connector 15 from damage and disperses the connection pressure on the valve body 14, improving the applicability of the vent valve body 1. The flow rate of the hydraulic oil 8 can be adjusted by adjusting the size of the perforation 7, thereby adjusting the rebound speed of the spring 5 and helping to extend the service life of the spring 5.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A venting valve for a gas turbine, comprising a venting valve body (1), characterized in that: An air inlet (2) is provided at one end of the vent valve body (1). A buffer column (3) is installed inside the vent valve body (1). A guide column (4) is slidably installed at one end of the buffer column (3). A spring (5) is sleeved on the side of the guide column (4). A piston plate (6) is installed at one end of the guide column (4). A through hole (7) is provided on the side of the piston plate (6). Hydraulic oil (8) is installed inside the buffer column (3). A connecting plate (9) is installed at one end of the buffer column (3). A push rod (12) is installed at one end of the connecting plate (9). A sealing plate (13) is installed on the side of the push rod (12).

2. The venting valve for a gas turbine according to claim 1, characterized in that: A sealing groove (10) is provided at one end of the connecting plate (9), and a sealing ring (11) is installed in the sealing groove (10).

3. The venting valve for a gas turbine according to claim 1, characterized in that: A valve body (14) is installed at one end of the buffer column (3), a connector (15) is installed at one end of the valve body (14), and a washer (16) is installed at one end of the connector (15).

4. A venting valve for a gas turbine according to claim 1, characterized in that: One end of the spring (5) is installed on the inner wall of the buffer column (3), and the other end of the spring (5) is installed on the inner wall of the vent valve body (1).

5. A venting valve for a gas turbine according to claim 4, characterized in that: One end of the sealing plate (13) is adapted to the air inlet (2), and the buffer column (3) is slidably installed inside the vent valve body (1).

6. A venting valve for a gas turbine according to claim 3, characterized in that: One end of the connector (15) is threaded onto the valve body (14), and the washer (16) is adapted to the valve body (14).

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