Emergency cut-off valve for gas turbine

Abstract

The utility model relates to the technical field of emergency cut-off valves, and discloses an emergency cut-off valve for a gas turbine, which comprises an emergency cut-off valve main body, the left end of the emergency cut-off valve main body is fixedly connected with an air inlet pipe for air intake, the left end of the air inlet pipe is connected with a connecting pipe I through a mounting component, and a closing piece is arranged on the outer wall of the connecting pipe I; the right end of the emergency cut-off valve body is fixedly connected with an air outlet pipe used for discharging air, and the outer wall of the air outlet pipe is slidably connected with a threaded sleeve. According to the emergency cut-off valve, the pull rod is pulled to enable the sliding rod to drive the clamping head to be disengaged from clamping of the first clamping rod and the second clamping rod, then the threaded sleeve rotates according to the threaded groove in the second connecting pipe, clamping of the threaded sleeve to the second connecting pipe is canceled, and the emergency cut-off valve body can be detached from the second connecting pipe; the air tightness of the joint of the first connecting pipe and the air inlet pipe can be improved through the first leakage-proof ring, and the air tightness of the joint of the air outlet pipe and the second connecting pipe can be improved through the second leakage-proof ring.

Description

Technical Field

[0001] The utility model relates to the technical field of emergency shut-off valves, in particular to an emergency shut-off valve for a gas turbine. Background Art

[0002] Gas turbines are highly efficient energy conversion devices widely used in power generation, ship propulsion, and industrial drive systems. They burn gases to generate high-temperature, high-pressure gas, which drives the turbine, converting thermal energy into mechanical energy. A gas turbine system typically includes major components such as a compressor, a combustion chamber, and a gas turbine. The emergency shut-off valve is a critical safety device in a gas turbine system. It can quickly cut off the gas supply when an emergency is detected, preventing the occurrence or escalation of an accident. Emergency shut-off valves are typically electromagnetically actuated, offering fast response and self-locking features, ensuring reliable shut-off of the gas supply in an emergency.

[0003] Although emergency shut-off valves play a vital role in gas turbine systems, there are still some problems and defects in the existing technology. Some emergency shut-off valves may wear out or fail after long-term operation, resulting in a slow response speed or failure to completely cut off the gas supply. In response to this technical problem, the present application proposes an emergency shut-off valve for a gas turbine. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose an emergency shut-off valve for a gas turbine. The pull rod is pulled so that the slide rod drives the clamping head to disengage from the clamping rod 1 and the clamping rod 2, and then the threaded sleeve is rotated according to the threaded groove on the connecting pipe 2, so that the threaded sleeve cancels the clamping of the connecting pipe 2, and the emergency shut-off valve body can be disassembled from the connecting pipe 2. The leak-proof ring 1 can improve the air tightness of the connection between the connecting pipe 1 and the air inlet pipe, and the leak-proof ring 2 can improve the air tightness of the connection between the outlet pipe and the connecting pipe 2.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] The cam is connected with the air intake pipe of the air intake valve body, and the cam is connected with the air intake pipe of the air intake valve body by the air intake valve body.

[0007] Furthermore, the locking assembly includes a pull rod located at the front end of the sliding sleeve, and the rear end of the pull rod is fixedly connected to two sliding rods, and the rear ends of the two sliding rods are fixedly connected to a clamping head, the top side sliding rod is arranged on the inner wall of clamping rod one, and the bottom side sliding rod is arranged on the inner wall of clamping rod two, and the outer walls of the two sliding rods are provided with springs.

[0008] Furthermore, one end of the two springs is arranged on the inner wall of the sliding sleeve, and the other ends of the two springs are respectively arranged on the front ends of the two clamps.

[0009] Furthermore, the mounting assembly includes a mounting plate located at the left end of the air intake pipe, a leak-proof ring is provided at the left end of the mounting plate, and the two mounting plates are connected by bolts.

[0010] Furthermore, the inner walls of the first and second locking sleeves are both provided with leak-proof rings. The second leak-proof ring on the left is provided on the outer wall of the air outlet pipe, and the second leak-proof ring on the right is provided on the outer wall of the connecting pipe.

[0011] Furthermore, the leak-proof ring is made of rubber as raw material.

[0012] Furthermore, the second leak-proof ring is made of rubber as raw material.

[0013] Furthermore, a valve is provided on an outer wall of the connecting pipe.

[0014] The utility model has the following beneficial effects:

[0015] In the utility model, the emergency shut-off valve can be removed from the gas turbine. The pull rod is pulled to make the slide rod drive the clamping head to disengage from the clamping rod one and the clamping rod two, and then the threaded sleeve is rotated according to the threaded groove on the connecting pipe two, so that the threaded sleeve cancels the clamping of the connecting pipe two, and the emergency shut-off valve body can be removed from the connecting pipe two, so that the emergency shut-off valve body can be fully inspected and maintained, avoiding safety hazards caused by wear or failure, and allowing the emergency shut-off valve to be replaced or repaired without dismantling the entire gas turbine, thereby improving the convenience and efficiency of maintenance.

[0016] In the utility model, the air tightness between the emergency shut-off valve and the gas turbine is improved. The leak-proof ring 1 provided on the mounting plate can improve the air tightness at the connection between the connecting pipe 1 and the air inlet pipe. The leak-proof ring 2 provided on the snap-fit ​​sleeve 1 and the snap-fit ​​sleeve 2 can improve the air tightness at the connection between the outlet pipe and the connecting pipe 2, thereby avoiding gas leakage, reducing the risk of fire or explosion, and thus improving the safety of the gas turbine system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional diagram of an emergency shut-off valve for a gas turbine proposed in the utility model;

[0018] Figure 2 This is a schematic diagram of the threaded sleeve structure of an emergency shut-off valve for a gas turbine proposed in the utility model;

[0019] Figure 3 This is a schematic diagram of the clamping head structure of an emergency shut-off valve for a gas turbine proposed in the utility model;

[0020] Figure 4 This is a schematic diagram of the valve structure of an emergency shut-off valve for a gas turbine proposed in the utility model;

[0021] Figure 5 The utility model is a schematic diagram of the anti-leakage ring structure of an emergency shut-off valve for a gas turbine.

[0022] Legend:

[0023] 1. Emergency shut-off valve body; 2. Air inlet pipe; 3. Mounting plate; 4. Anti-leakage ring (1); 5. Connecting pipe (1); 6. Valve; 7. Air outlet pipe; 8. Threaded sleeve; 9. Connecting pipe (2); 10. Clamping sleeve (1); 11. Clamping rod (1); 12. Clamping sleeve (2); 13. Clamping rod (2); 14. Anti-leakage ring (2); 15. Sliding sleeve; 16. Sliding rod; 17. Clamping head; 18. Pull rod; 19. Spring. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] Reference Figure 1-Figure 3 The utility model provides an embodiment: an emergency shut-off valve for a gas turbine, comprising an emergency shut-off valve body 1, wherein the left end of the emergency shut-off valve body 1 is fixedly connected to an intake pipe 2 for intake, the left end of the intake pipe 2 is connected to a connecting pipe 5 through a mounting plate 3, and a closing member is provided on the outer wall of the connecting pipe 5, and the right end of the emergency shut-off valve body 1 is fixedly connected to an outlet pipe 7 for exhaust, the outer wall of the outlet pipe 7 is slidably connected to a threaded sleeve 8, the inner wall of the threaded sleeve 8 is threadedly connected to a connecting pipe 2 9, and the tops of the outlet pipe 7 and the connecting pipe 2 9 are both provided with a clamping sleeve 10, the front end of the clamping sleeve 10 is fixedly connected to a clamping rod 11, and the rear end of the clamping sleeve 10 is rotatable. It is connected with a locking sleeve 2 12, the front end of the locking sleeve 2 12 is fixedly connected with a clamping rod 2 13, and the threaded sleeve 8 is arranged on the inner walls of the locking sleeve 10 and the locking sleeve 2 12, the outer walls of the clamping rod 11 and the clamping rod 2 13 are slidably connected with a sliding sleeve 15, a pull rod 18 is arranged on the left side of the front end of the sliding sleeve 15, and two sliding rods 16 are fixedly connected to the rear end of the pull rod 18, and the rear ends of the two sliding rods 16 are fixedly connected with a clamping head 17, the top side sliding rod 16 is arranged on the inner wall of the clamping rod 11, and the bottom side sliding rod 16 is arranged on the inner wall of the clamping rod 2 13, and the outer walls of the two sliding rods 16 are provided with springs 19, and the inner walls of the locking sleeve 10 and the locking sleeve 2 12 are provided with leakage-proof parts.

[0026] Specifically, by pulling the pull rod 18, the sliding rod 16 drives the clamping head 17 to disengage the clamping rod 11 and the clamping rod 2 13, and separate the clamping sleeve 10 and the clamping sleeve 2 12. Then, the threaded sleeve 8 is rotated according to the threaded groove on the connecting pipe 2 9, so that the threaded sleeve 8 cancels the engagement with the connecting pipe 2 9, and the emergency shut-off valve body 1 can be disassembled from the connecting pipe 2 9, so that the emergency shut-off valve body 1 can be fully inspected and maintained, ensuring the normal operation of the emergency shut-off valve body 1, avoiding safety hazards caused by wear or failure, and allowing the emergency shut-off valve to be replaced or repaired without dismantling the entire gas turbine, thereby improving the convenience and efficiency of maintenance.

[0027] Reference Figure 1 、 Figure 4 and Figure 5One end of the two springs 19 is arranged on the inner wall of the sliding sleeve 15, and the other ends of the two springs 19 are respectively arranged at the front ends of the two clamps 17, wherein the mounting plate 3 is located at the left end of the air inlet pipe 2, and a leak-proof ring 4 is arranged on the left end of the mounting plate 3. The two mounting plates 3 are connected by bolts. The inner walls of the snap-fit ​​sleeve 10 and the snap-fit ​​sleeve 2 12 are both provided with a leak-proof ring 2 14. The left leak-proof ring 2 14 is arranged on the outer wall of the air outlet pipe 7, and the right leak-proof ring 2 14 is arranged on the outer wall of the connecting pipe 2 9. The leak-proof ring 1 4 is prepared by rubber as raw material, and the leak-proof ring 2 14 is prepared by rubber as raw material. The outer wall of the connecting pipe 5 is provided with a valve 6.

[0028] Specifically, both the leak-proof ring 1 4 and the leak-proof ring 2 14 are made of rubber. As an elastic sealing material, they can form an effective seal at the connection between the emergency shut-off valve body 1 and the pipeline, maintaining good sealing performance even under pressure changes or temperature fluctuations. Furthermore, the softness and elasticity of the leak-proof ring 1 4 and the leak-proof ring 2 14 enable them to adapt to slight deformations at the pipeline connection, thereby maintaining a reliable seal. After the emergency shut-off valve body 1 is installed with the intake pipe 2 and the connecting pipe 1 5 via the leak-proof ring 1 4 , the leak-proof ring 1 4 provided on the mounting plate 3 can improve the airtightness at the connection between the connecting pipe 1 5 and the intake pipe 2. Subsequently, when the outlet pipe 7 is connected to the connecting pipe 2 9 via the threaded sleeve 8 , the leak-proof ring 2 14 provided on the locking sleeve 10 and the locking sleeve 2 12 can improve the airtightness at the connection between the outlet pipe 7 and the connecting pipe 2 9, preventing gas leakage, reducing the risk of fire or explosion, and thereby improving the safety of the gas turbine system. Closing the valve 6 can temporarily block the gas flow while the emergency shut-off valve body 1 is being maintained or replaced.

[0029] Working principle: Assemble the air inlet pipe 2 on the emergency shut-off valve body 1 with the connecting pipe 1 5 through the mounting plate 3, and then assemble the air outlet pipe 7 on the emergency shut-off valve body 1 with the connecting pipe 2 9 through the threaded sleeve 8, and then cooperate with the clamping sleeve 10 and the clamping sleeve 2 12 through the clamping rod 2 13, the leak-proof ring 2 14 and the sliding sleeve 15, and under the action of the spring 19, the clamping head 17 clamps the clamping rod 2 13 and the leak-proof ring 2 14, so that the clamping sleeve 10 and the clamping sleeve 2 12 are fixed, and then the emergency shut-off valve body 1 can start to work. During the operation of the emergency shut-off valve body 1, the leak-proof ring 1 4 provided on the mounting plate 3 can improve the air tightness of the connection between the connecting pipe 1 5 and the air inlet pipe 2, and the leak-proof ring 2 14 provided on the clamping sleeve 10 and the clamping sleeve 2 12 can improve the air tightness of the connection between the outlet pipe 7 and the connecting pipe 2 9, thereby avoiding gas leakage and reducing the risk of fire or explosion. Explosion risk, after using for a period of time, first close the valve 6, then pull the pull rod 18 to drive the sliding rod 16 to move, so that the sliding rod 16 drives the clamping head 17 to disengage the engagement of the clamping rod 11 and the clamping rod 2 13, and slide the sliding sleeve 15 out of the clamping rod 11 and the clamping rod 2 13, so that the clamping sleeve 10 and the clamping sleeve 2 12 are separated, and then the threaded sleeve 8 is rotated according to the threaded groove on the connecting pipe 2 9, so that the threaded sleeve 8 cancels the engagement of the connecting pipe 2 9, and the emergency shut-off valve body 1 can be disassembled from the connecting pipe 2 9, thereby performing a comprehensive inspection and maintenance on the emergency shut-off valve body 1, ensuring the normal operation of the emergency shut-off valve body 1, avoiding safety hazards caused by wear or failure, and allowing the emergency shut-off valve to be replaced or repaired without dismantling the entire gas turbine. After the maintenance of the emergency shut-off valve body 1 is completed, it is installed back, and the valve 6 is opened to allow the gas to pass and the gas turbine to operate.

[0030] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An emergency shut-off valve for a gas turbine, characterized in that: The invention comprises an emergency shut-off valve body (1), wherein the left end of the emergency shut-off valve body (1) is fixedly connected to an air inlet pipe (2) for air intake, the left end of the air inlet pipe (2) is connected to a connecting pipe (5) through a mounting assembly, the outer wall of the connecting pipe (5) is provided with a closing member, the right end of the emergency shut-off valve body (1) is fixedly connected to an air outlet pipe (7) for air discharge, the outer wall of the air outlet pipe (7) is slidably connected to a threaded sleeve (8), the inner wall of the threaded sleeve (8) is threadedly connected to a connecting pipe (9), and the top ends of the air outlet pipe (7) and the connecting pipe (9) are both provided with a snap-fit ​​sleeve (1) 0), the front end of the snap-fit ​​sleeve 1 (10) is fixedly connected to the snap-fit ​​rod 1 (11), the rear end of the snap-fit ​​sleeve 1 (10) is rotatably connected to the snap-fit ​​sleeve 2 (12), the front end of the snap-fit ​​sleeve 2 (12) is fixedly connected to the snap-fit ​​rod 2 (13), and the threaded sleeve (8) is arranged on the inner walls of the snap-fit ​​sleeve 1 (10) and the snap-fit ​​sleeve 2 (12), the outer walls of the snap-fit ​​rod 1 (11) and the snap-fit ​​rod 2 (13) are slidably connected to the sliding sleeve (15), the left side of the front end of the sliding sleeve (15) is provided with a snap-fit ​​assembly, and the inner walls of the snap-fit ​​sleeve 1 (10) and the snap-fit ​​sleeve 2 (12) are provided with a leak-proof part.

2. The emergency shut-off valve for a gas turbine according to claim 1, characterized in that: The locking assembly includes a pull rod (18) located on the left side of the front end of the sliding sleeve (15), the rear end of the pull rod (18) is fixedly connected to two sliding rods (16), the rear ends of the two sliding rods (16) are fixedly connected to a clamping head (17), the top side of the sliding rod (16) is set on the inner wall of the clamping rod 1 (11), and the bottom side of the sliding rod (16) is set on the inner wall of the clamping rod 2 (13), and the outer walls of the two sliding rods (16) are both provided with a spring (19).

3. The emergency shut-off valve for a gas turbine according to claim 2, characterized in that: One end of the two springs (19) is arranged on the inner wall of the sliding sleeve (15), and the other end of the two springs (19) is respectively arranged on the front end of the two clamps (17).

4. The emergency shut-off valve for a gas turbine according to claim 1, characterized in that: The mounting assembly comprises a mounting plate (3) located at the left end of the air intake pipe (2), a leak-proof ring (4) is provided at the left end of the mounting plate (3), and the two mounting plates (3) are connected by bolts.

5. The emergency shut-off valve for a gas turbine according to claim 1, characterized in that: The inner walls of the snap-fit ​​sleeve 1 (10) and the snap-fit ​​sleeve 2 (12) are both provided with a leak-proof ring 2 (14). The leak-proof ring 2 (14) on the left side is provided on the outer wall of the air outlet pipe (7), and the leak-proof ring 2 (14) on the right side is provided on the outer wall of the connecting pipe 2 (9).

6. The emergency shut-off valve for a gas turbine according to claim 4, characterized in that: The leak-proof ring 1 (4) is made of rubber as raw material.

7. The emergency shut-off valve for a gas turbine according to claim 5, characterized in that: The leak-proof ring 2 (14) is made of rubber as raw material.

8. The emergency shut-off valve for a gas turbine according to claim 1, characterized in that: A valve (6) is provided on the outer wall of the connecting pipe 1 (5).

Images