Safety valve capable of quickly releasing pressure

Abstract

The utility model relates to the technical field of safety valves, in particular to a quick pressure relief safety valve which comprises a pressure relief valve body, an exhaust pipe is arranged on the surface of the pressure relief valve body, a pressure relief valve cover is arranged on the surface of the pressure relief valve body, and an arc-shaped adjusting plate is movably connected into the exhaust pipe. And the surface of the arc-shaped adjusting plate is fixedly connected with a limiting rod. Through the connection of the wind shield and the abutting block and the connection of the fixing shaft and the wind shield, when the pressure relief valve body is used for pressure relief, air flow impacts the surface of the wind shield, so that the wind shield and the abutting block are driven to rotate on the surface of the fixing shaft, the damping torsion spring deforms, the abutting block rotates to leave the surface of the arc-shaped adjusting plate, and pressure relief is conducted. The damping spring drives the arc-shaped adjusting plate to move towards the inner wall of the exhaust pipe in order to restore the original shape, the limiting rod provides guidance for movement of the arc-shaped adjusting plate, and therefore the pressure relief area of the exhaust pipe is enlarged, pressure relief is rapid, and the effect of rapid pressure relief is achieved.

Description

Technical Field

[0001] This utility model relates to the field of safety valve technology, specifically a safety valve for rapid pressure relief. Background Technology

[0002] A safety valve is an automatic valve used for overpressure protection. It is mainly installed on boilers, pressure vessels, and pipelines to prevent the pressure of the medium in the equipment or pipeline from exceeding the specified value, thereby protecting personal safety and equipment operation.

[0003] When the system pressure exceeds the safety valve's set value, the safety valve will automatically open to release the medium, thereby reducing the system pressure and preventing equipment damage due to high pressure. Once the system pressure drops to a safe range, the safety valve will automatically close to ensure stable system operation. In addition, the safety valve also has an automatic alarm function. However, when using existing safety valves, their pressure relief speed is relatively slow, which can easily lead to pipeline rupture or damage, resulting in poor practicality and potential safety hazards. Utility Model Content

[0004] The purpose of this utility model is to provide a safety valve for rapid pressure relief, in order to solve the problem that the safety valves mentioned in the background art have a slow pressure relief speed, which can easily lead to pipeline rupture or damage, resulting in poor practicality and safety hazards.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a safety valve for rapid pressure relief, comprising a pressure relief valve body, an exhaust pipe on the surface of the pressure relief valve body, a pressure relief valve cover on the surface of the pressure relief valve body, an arc-shaped adjusting plate movably connected inside the exhaust pipe, a limit rod fixedly connected to the surface of the arc-shaped adjusting plate, a limit piece fixedly connected to the end of the limit rod away from the arc-shaped adjusting plate, a damping spring wound around the surface of the limit rod, a fixed shaft fixedly connected to the inner surface of the exhaust pipe, a damping torsion spring wound around the surface of the fixed shaft, a wind baffle rotatably connected to the surface of the fixed shaft, an abutment block fixedly connected to the surface of the wind baffle, a sealing sleeve fitted onto the surface of the pressure relief valve cover, a connecting rod fixedly connected to the surface of the pressure relief valve cover, a connecting threaded rod fixedly connected to the surface of the connecting rod, a guide slot formed on the surface of the connecting threaded rod, a guide rod fixedly connected to the surface of the pressure relief valve body, a limit block fixedly connected to the surface of the guide rod, and an internal threaded sleeve fitted onto the surface of the guide rod.

[0006] Preferably, the arc-shaped adjusting plates are evenly distributed in four groups inside the exhaust pipe, the two ends of the damping spring are fixedly connected to the surface of the arc-shaped adjusting plates and the inner surface of the exhaust pipe, the arc-shaped adjusting plates are movably connected to the surface of the exhaust pipe through a limiting rod, and the arc-shaped adjusting plates are fixedly connected to the inside of the exhaust pipe through an abutment block.

[0007] Preferably, the fixed shafts are evenly distributed in four groups on the inner surface of the exhaust pipe, the wind deflector is rotatably connected to the inside of the exhaust pipe through the fixed shafts, the wind deflector is abutted to the surface of the arc-shaped adjusting plate through the fixed shafts, and the abutting block is rotatably connected to the surface of the wind deflector and the fixed shafts.

[0008] Preferably, the two ends of the damping torsion spring are fixedly connected to the surface of the fixed shaft and the inside of the wind baffle, the wind baffle is rotatably connected to the surface of the fixed shaft through the damping torsion spring, and the abutment block is rotatably connected to the surface of the fixed shaft through the damping torsion spring.

[0009] Preferably, the arc-shaped adjusting plate is internally and movably connected to the exhaust pipe via a damping spring, and the arc-shaped adjusting plate is internally and movably connected to the exhaust pipe via an abutment block.

[0010] Preferably, the sealing sleeve is connected by the surface abutting of the pressure relief valve cover and the pressure relief valve body, the connecting threaded rod is movably connected to the surface of the pressure relief valve body by the connecting rod, the guide rod is inserted into the surface of the connecting threaded rod by the guide slot, and the limiting block is connected by the surface abutting of the guide rod and the connecting threaded rod.

[0011] Preferably, the internal threaded sleeve is movably connected to the surface of the guide rod and the connecting threaded rod, the internal threaded sleeve is threaded onto the surface of the connecting threaded rod, the internal threaded sleeve is abutted to the surface of the connecting threaded rod and the limiting block, and the pressure relief valve cover is fixedly connected to the surface of the pressure relief valve body through the internal threaded sleeve.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. Through the connection between the baffle and the abutment block, and the connection between the fixed shaft and the baffle, when the pressure relief valve body releases pressure, the airflow impacts the surface of the baffle, thereby causing the baffle and the abutment block to rotate on the surface of the fixed shaft. The damping torsion spring deforms, and then through the connection between the arc-shaped adjusting plate and the damping spring, and the connection between the limiting rod and the limiting plate, the abutment block rotates away from the surface of the arc-shaped adjusting plate. The damping spring, in order to return to its original shape, drives the arc-shaped adjusting plate to move towards the inner wall of the exhaust pipe. The limiting rod provides guidance for the movement of the arc-shaped adjusting plate, thereby expanding the pressure relief area of ​​the exhaust pipe and rapidly releasing pressure. Then, through the connection between the damping torsion spring and the baffle, and the connection between the arc-shaped adjusting plate and the abutment block, after the pressure relief is completed, the damping torsion spring, in order to return to its original shape, drives the baffle and the abutment block to reset. The abutment block drives the arc-shaped adjusting plate to reset, and the damping spring deforms again, achieving the effect of rapid pressure relief.

[0014] 2. By connecting the pressure relief valve body and the pressure relief valve cover, and connecting the pressure relief valve cover and the sealing sleeve, the pressure relief valve cover can be installed on the surface of the pressure relief valve body. The sealing sleeve improves the sealing performance of the connection. Then, by connecting the connecting rod and the connecting threaded rod, and connecting the guide slot and the guide rod, the pressure relief valve cover is installed on the surface of the pressure relief valve body, while the guide rod is inserted into the surface of the guide slot, providing guidance for the installation of the pressure relief valve cover. By connecting the guide rod and the limiting block, the insertion position of the guide rod is restricted. Then, by connecting the connecting threaded rod and the internal threaded sleeve, and connecting the limiting block and the internal threaded sleeve, the internal threaded sleeve is moved so that it connects to the surface of the connecting threaded rod until it abuts against the limiting block. At this point, the maximum connection is achieved, and the installation of the pressure relief valve body and the pressure relief valve cover is completed. Conversely, they can be disassembled to facilitate the installation of the pressure relief valve cover on the surface of the pressure relief valve body. Attached Figure Description

[0015] Figure 1 This is a three-dimensional front view of the structure of this utility model;

[0016] Figure 2 This is a side-view perspective view of the structure of this utility model;

[0017] Figure 3 This is a three-dimensional partial sectional view of the connection structure between the exhaust pipe and the arc-shaped adjustment plate of this utility model;

[0018] Figure 4 This is a three-dimensional partial sectional view of the connection structure between the fixed shaft and the wind baffle of this utility model;

[0019] Figure 5 This is a three-dimensional partial sectional view of the connection structure between the pressure relief valve body and the pressure relief valve cover of this utility model.

[0020] In the diagram: 1. Pressure relief valve body; 11. Exhaust pipe; 12. Pressure relief valve cover; 2. Arc-shaped adjusting plate; 21. Limiting rod; 22. Limiting piece; 23. Damping spring; 24. Fixed shaft; 25. Damping torsion spring; 26. Wind baffle; 27. Abutment block; 3. Sealing sleeve; 31. Connecting rod; 32. Connecting threaded rod; 33. Guide slot; 34. Guide rod; 35. Limiting block; 36. Internal threaded sleeve. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-5One embodiment provided by this utility model:

[0023] A rapid pressure relief safety valve includes a pressure relief valve body 1, an exhaust pipe 11 on the surface of the pressure relief valve body 1, a pressure relief valve cover 12 on the surface of the pressure relief valve body 1, an arc-shaped adjusting plate 2 movably connected inside the exhaust pipe 11 for adjusting the size of the exhaust area of ​​the exhaust pipe 11, a limit rod 21 fixedly connected to the surface of the arc-shaped adjusting plate 2 for guiding the movement of the arc-shaped adjusting plate 2, a limit piece 22 fixedly connected to the end of the limit rod 21 away from the arc-shaped adjusting plate 2 for limiting the movement position of the arc-shaped adjusting plate 2, a damping spring 23 wound around the surface of the limit rod 21 for driving the arc-shaped adjusting plate 2 to move towards the inner wall of the exhaust pipe 11, a fixed shaft 24 fixedly connected to the inner surface of the exhaust pipe 11 for rotating a baffle plate 26 and abutment block 27, a damping torsion spring 25 wound around the surface of the fixed shaft 24 for resetting the baffle plate 26 and abutment block 27, and a baffle plate 26 rotatably connected to the surface of the fixed shaft 24 for rotating the abutment block 27 when subjected to air pressure impact. A stop block 27 is fixedly connected to the surface of the air deflector 26 to abut against the surface of the arc-shaped adjusting plate 2 and limit the position of the arc-shaped adjusting plate 2. A sealing sleeve 3 is fitted onto the surface of the pressure relief valve cover 12 to improve the sealing performance of the connection between the pressure relief valve body 1 and the pressure relief valve cover 12. A connecting rod 31 is fixedly connected to the surface of the pressure relief valve cover 12 to connect to the connecting threaded rod 32. A connecting threaded rod 32 is fixedly connected to the surface of the connecting rod 31 to connect to the internal threaded sleeve 36. A guide slot 33 is provided on the surface of the connecting threaded rod 32 for inserting the guide rod 34. A guide rod 34 is fixedly connected to the surface of the pressure relief valve body 1 for inserting into the surface of the guide slot 33. A limit block 35 is fixedly connected to the surface of the guide rod 34 to limit the position of the internal threaded sleeve 36. An internal threaded sleeve 36 is fitted onto the surface of the guide rod 34 for connecting to the surface of the connecting threaded rod 32. The pressure relief valve body 1, the exhaust pipe 11, and the pressure relief valve cover 12 are all existing products and are not considered as technical protection points of this application. They will not be described in detail here.

[0024] Furthermore, the arc-shaped adjustment plates 2 are evenly distributed in four groups inside the exhaust pipe 11. The two ends of the damping spring 23 are fixedly connected to the surface of the arc-shaped adjustment plates 2 and the inner surface of the exhaust pipe 11. The arc-shaped adjustment plates 2 are movably connected to the surface of the exhaust pipe 11 through the limiting rod 21. The arc-shaped adjustment plates 2 are fixedly connected to the inside of the exhaust pipe 11 through the abutment block 27. The even distribution of the four groups of arc-shaped adjustment plates 2 restricts their own position by the abutment block 27. The damping spring 23 is in a deformed state, thereby limiting the size of the exhaust area of ​​the exhaust pipe 11.

[0025] Furthermore, the fixed shafts 24 are evenly distributed in four groups on the inner surface of the exhaust pipe 11. The baffle plate 26 is rotatably connected to the inside of the exhaust pipe 11 through the fixed shafts 24. The baffle plate 26 is abutted to the surface of the arc-shaped adjusting plate 2 through the fixed shafts 24. The abutting block 27 is rotatably connected to the surface of the fixed shafts 24 through the baffle plate 26. When the pressure relief valve body 1 exhausts, the air pressure impacts the surface of the four groups of baffle plates 26, thereby driving the abutting block 27 to rotate. The damping torsion spring 25 deforms accordingly, causing the abutting block 27 to leave the surface of the arc-shaped adjusting plate 2. The damping spring 23 drives the arc-shaped adjusting plate 2 to move towards the inner wall of the exhaust pipe 11 in order to restore its original shape, thereby expanding the exhaust area of ​​the exhaust pipe 11.

[0026] Furthermore, the two ends of the damping torsion spring 25 are fixedly connected to the surface of the fixed shaft 24 and the inside of the wind deflector 26. The wind deflector 26 is rotatably connected to the surface of the fixed shaft 24 through the damping torsion spring 25. The abutment block 27 is rotatably connected to the surface of the fixed shaft 24 through the damping torsion spring 25. When the air pressure is released, the damping torsion spring 25 drives the wind deflector 26 and the abutment block 27 to reset in order to restore their original state, thereby driving the arc-shaped adjusting plate 2 to reset.

[0027] Furthermore, the arc-shaped adjusting plate 2 is internally and movably connected to the exhaust pipe 11 via the damping spring 23, and the arc-shaped adjusting plate 2 is internally and movably connected to the exhaust pipe 11 via the abutment block 27. When the abutment block 27 leaves the surface of the arc-shaped adjusting plate 2, the damping spring 23 drives the arc-shaped adjusting plate 2 to move towards the inner wall of the exhaust pipe 11, thereby increasing the exhaust area. After exhausting the gas, the abutment block 27 is reset by the damping torsion spring 25, thereby driving the arc-shaped adjusting plate 2 to reset, and the damping spring 23 deforms again.

[0028] Furthermore, the sealing sleeve 3 is connected to the surface of the pressure relief valve cover 12 and the pressure relief valve body 1 by abutting, the connecting threaded rod 32 is movably connected to the surface of the pressure relief valve body 1 by the connecting rod 31, the guide rod 34 is connected to the surface of the connecting threaded rod 32 by the guide slot 33, and the limiting block 35 is connected to the surface of the connecting threaded rod 32 by the guide rod 34. The pressure relief valve cover 12 is installed on the surface of the pressure relief valve body 1, the sealing sleeve 3 improves the sealing performance of the connection, and at the same time, the connecting threaded rod 32 is inserted into the surface of the guide rod 34, and the limiting block 35 abuts against the surface of the connecting threaded rod 32.

[0029] Furthermore, the internal threaded sleeve 36 is movably connected to the surface of the guide rod 34 and the connecting threaded rod 32. The internal threaded sleeve 36 is threaded onto the surface of the connecting threaded rod 32. The internal threaded sleeve 36 is abutted to the surface of the connecting threaded rod 32 and the limiting block 35. The pressure relief valve cover 12 is fixedly connected to the surface of the pressure relief valve body 1 through the internal threaded sleeve 36. Then, the internal threaded sleeve 36 can be moved to the surface of the connecting threaded rod 32. Then, the internal threaded sleeve 36 is tightened until it abuts against the limiting block 35, at which point the maximum connection is achieved, and the installation of the pressure relief valve body 1 and the pressure relief valve cover 12 is completed.

[0030] Working principle: When using the pressure relief valve body 1, firstly, the pressure relief valve cover 12 needs to be installed on the surface of the pressure relief valve body 1. The sealing sleeve 3 improves the sealing of the connection, and at the same time, the connecting threaded rod 32 is inserted into the surface of the guide rod 34, so that the limiting block 35 abuts against the surface of the connecting threaded rod 32. Then, the inner threaded sleeve 36 can be moved to the surface of the connecting threaded rod 32, and then the inner threaded sleeve 36 is tightened until it abuts against the limiting block 35. At this time, the maximum connection is achieved, and the installation of the pressure relief valve body 1 and the pressure relief valve cover 12 is completed. When the pressure relief valve body 1 is venting, the air pressure impacts the surface of the four sets of baffles 26, thereby causing the abutment block 27 to rotate. The damping torsion spring 25 deforms accordingly, causing the abutment block 27 to leave the surface of the arc-shaped adjusting plate 2. The damping spring 23 moves the arc-shaped adjusting plate 2 towards the inner wall of the exhaust pipe 11 to restore its original shape, thereby expanding the exhaust area of ​​the exhaust pipe 11 and achieving the purpose of rapid air release. When the air pressure is released, the damping torsion spring 25 restores its original shape, causing the baffles 26 and the abutment block 27 to reset, thereby causing the arc-shaped adjusting plate 2 to reset, and the damping spring 23 deforms again.

[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A safety valve for rapid pressure relief, comprising a pressure relief valve body (1), characterized in that: The surface of the pressure relief valve body (1) is provided with an exhaust pipe (11), and the surface of the pressure relief valve body (1) is provided with a pressure relief valve cover (12). An arc-shaped adjusting plate (2) is movably connected inside the exhaust pipe (11). A limit rod (21) is fixedly connected to the surface of the arc-shaped adjusting plate (2). A limit piece (22) is fixedly connected to the end of the limit rod (21) away from the arc-shaped adjusting plate (2). A damping spring (23) is wound around the surface of the limit rod (21). A fixed shaft (24) is fixedly connected to the inner surface of the exhaust pipe (11). A damping torsion spring (25) is wound around the surface of the fixed shaft (24). 4) The surface of the valve body (1) is rotatably connected to a baffle plate (26), the surface of the baffle plate (26) is fixedly connected to an abutment block (27), the surface of the pressure relief valve cover (12) is fitted with a sealing sleeve (3), the surface of the pressure relief valve cover (12) is fixedly connected to a connecting rod (31), the surface of the connecting rod (31) is fixedly connected to a connecting threaded rod (32), the surface of the connecting threaded rod (32) is provided with a guide slot (33), the surface of the pressure relief valve body (1) is fixedly connected to a guide rod (34), the surface of the guide rod (34) is fixedly connected to a limit block (35), and the surface of the guide rod (34) is fitted with an internal threaded sleeve (36).

2. The safety valve for rapid pressure relief according to claim 1, characterized in that: The arc-shaped adjustment plate (2) is evenly distributed in four groups inside the exhaust pipe (11). The two ends of the damping spring (23) are fixedly connected to the surface of the arc-shaped adjustment plate (2) and the inner surface of the exhaust pipe (11). The arc-shaped adjustment plate (2) is movably connected to the surface of the exhaust pipe (11) through the limiting rod (21). The arc-shaped adjustment plate (2) is fixedly connected to the inside of the exhaust pipe (11) through the abutment block (27).

3. A safety valve for rapid pressure relief according to claim 1, characterized in that: The fixed shaft (24) is evenly distributed in four groups on the inner surface of the exhaust pipe (11). The wind deflector (26) is rotatably connected to the inside of the exhaust pipe (11) through the fixed shaft (24). The wind deflector (26) is abutted to the surface of the arc-shaped adjusting plate (2) through the fixed shaft (24). The abutting block (27) is rotatably connected to the surface of the wind deflector (26) and the fixed shaft (24).

4. A safety valve for rapid pressure relief according to claim 1, characterized in that: The two ends of the damping torsion spring (25) are fixedly connected to the surface of the fixed shaft (24) and the inside of the wind baffle (26). The wind baffle (26) is rotatably connected to the surface of the fixed shaft (24) through the damping torsion spring (25). The abutment block (27) is rotatably connected to the surface of the fixed shaft (24) through the damping torsion spring (25).

5. A safety valve for rapid pressure relief according to claim 1, characterized in that: The arc-shaped adjustment plate (2) is internally connected to the exhaust pipe (11) via a damping spring (23), and the arc-shaped adjustment plate (2) is internally connected to the exhaust pipe (11) via an abutment block (27).

6. A safety valve for rapid pressure relief according to claim 1, characterized in that: The sealing sleeve (3) is connected to the surface of the pressure relief valve cover (12) and the pressure relief valve body (1) by abutting. The connecting threaded rod (32) is movably connected to the surface of the pressure relief valve body (1) by the connecting rod (31). The guide rod (34) is connected to the surface of the connecting threaded rod (32) by the guide slot (33). The limiting block (35) is connected to the surface of the guide rod (34) and the connecting threaded rod (32) by abutting.

7. A safety valve for rapid pressure relief according to claim 1, characterized in that: The internal threaded sleeve (36) is movably connected to the surface of the guide rod (34) and the connecting threaded rod (32). The internal threaded sleeve (36) is threaded onto the surface of the connecting threaded rod (32). The internal threaded sleeve (36) is abutted to the surface of the connecting threaded rod (32) and the limiting block (35). The pressure relief valve cover (12) is fixedly connected to the surface of the pressure relief valve body (1) through the internal threaded sleeve (36).

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