Safety valve for pressure monitoring

Abstract

The application discloses a safety valve for pressure monitoring and relates to the technical field of pipeline valves.The safety valve comprises a valve seat assembly, valve covers, a pressure mechanism and the like.The valve seat assembly is connected with external pipelines at both ends;the valve covers are installed inside the valve seat assembly;the pressure mechanism is connected with the valve covers and installed above the valve seat assembly, and is used for controlling the opening and closing of the safety valve in cooperation with the valve covers.In actual application, due to the resistance of fluid medium, the moving speed of the damping piston is controlled to slowly rise, so that the opening process of the valve cover is stable, and internal vibration caused by rapid action is avoided;when the pressure in the pipeline returns to normal, the damping piston slowly descends, drives the valve cover to stably reset and closes the channel;through the accurate control of the damping piston, the speed of the valve cover in the whole up-and-down moving process is uniform and slow, vibration of the valve cover is effectively avoided, and the operation stability and service life of the safety valve are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of pipeline valve technology, specifically a safety valve for pressure monitoring. Background Technology

[0002] Pressure monitoring is a critical element in ensuring the safe operation of equipment in industrial production, chemical, energy, and various fluid transport systems. During operation, pressure fluctuations within pressure vessels and pipeline systems can significantly impact their normal operation and safety. Therefore, timely and accurate monitoring of pressure changes, and taking effective pressure relief measures when pressure exceeds safe thresholds, are essential means of ensuring system safety.

[0003] When the system pressure fluctuates around the safety valve's set value, the safety valve will frequently open and close. This frequent operation causes vibration of the valve cover and valve body. Specifically, when the pressure slightly exceeds the set value, the safety valve opens to release pressure; and when the pressure drops below the set value, the safety valve closes. If this process occurs frequently, it will cause impact and vibration to the valve cover during opening and closing, thus affecting the sealing performance and service life.

[0004] When the medium flow rate is too high, turbulence may occur. Turbulence is caused by irregular flow due to excessive medium flow rate, which makes the internal pressure distribution of the valve uneven and thus causes vibration. For example, when high-velocity liquids or gases pass through the valve, cavitation or cavitation may occur, which in turn causes vibration.

[0005] Such frequent actions not only increase the mechanical stress on the valve cover but may also lead to accelerated wear of the sealing components, further affecting the performance of the safety valve. At the same time, frequent opening and closing can interfere with the accuracy of pressure monitoring, causing the system to be unable to obtain pressure data in a timely and accurate manner. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a safety valve for pressure monitoring, which solves the problem mentioned in the background art that existing safety valves lack effective buffering and damping mechanisms in their design, thus failing to effectively reduce the vibration of the valve cover during opening and closing, resulting in a shortened valve life.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a safety valve for pressure monitoring, comprising:

[0008] A valve seat assembly, the two ends of which are connected to external pipes;

[0009] Valve cover, installed inside the valve seat assembly;

[0010] A pressure mechanism is connected with the valve cover, and is installed above the valve seat assembly to control the opening and closing of the safety valve in cooperation with the valve cover;

[0011] A positioning machine assembly is installed on one side of the pressure mechanism to position the internal components of the pressure mechanism;

[0012] A pressure relief assembly is arranged inside the valve seat assembly to relieve pressure inside the safety valve.

[0013] Preferably, the valve seat assembly comprises a valve seat shell, pipe medium outlets and inlets are arranged at two ends of the valve seat shell respectively, sealing rings are embedded on the surfaces of the two ends of the valve seat shell, the sealing rings are distributed on the two side edges of a communication groove, the communication groove is arranged on the surface of the valve seat shell, the communication groove has a ring shape structure, and a spring pin is inserted into the communication groove.

[0014] The spring pin is in sliding contact with the inner wall of the valve seat shell, a positioning spring is sleeved on the outer part of the spring pin, a limiting ring is arranged at one end of the spring pin, and the limiting ring is welded with the valve seat shell.

[0015] By arranging the communication groove and the spring pin at the two ends of the valve seat shell, real-time monitoring and timely early warning of aging leakage of the sealing ring are realized. When the sealing performance of the connection between the valve seat shell and the external flange decreases to cause leakage, the medium enters the communication groove, the pressure in the communication groove increases, the spring pin is pushed out, the operator can discover the aging leakage problem of the sealing ring in time and replace the sealing ring in time, so that the safety hazard caused by sealing failure is avoided, meanwhile, when the pressure in the communication groove returns to normal, the spring pin can be automatically reset under the action of the positioning spring, so that the normal operation of the device is ensured. This design not only improves the sealing reliability of the safety valve, but also enhances the pressure monitoring function of the safety valve, thereby providing more effective protection for the safe operation of the system.

[0016] Preferably, the pressure mechanism comprises a damping assembly sealing cover, an isolation pad is arranged between the sealing cover and the valve seat shell, the damping assembly is arranged inside the sealing cover, a main spring is arranged above the damping assembly, the damping assembly is penetrated by a connecting rod, one end of the bottom of the connecting rod is connected with the valve cover, a supporting block is sleeved on one end of the top of the connecting rod, the supporting block is in sliding contact with the inner wall of the sealing cover, and the supporting block is located at the bottom of the main spring.

[0017] Through the cooperative action of the damping assembly and the main spring in the pressure mechanism, the accurate control and buffering of the action of the valve cover are realized, the speed of the valve cover in the opening and closing process is effectively slowed down, the vibration and impact caused by rapid action are avoided, the operation stability and service life of the safety valve are significantly improved, and the reliability and safety in the pressure monitoring and adjustment process are enhanced.

[0018] Preferably, the damping assembly comprises a damping chamber, a damping piston is arranged inside the damping chamber, a fine hole is opened in the damping piston for medium flow in the damping chamber, the damping piston is fixedly installed outside the connecting rod, the outer wall of the connecting rod is in sliding contact with the damping chamber, and the damping chamber is filled with a fluid medium;

[0019] Through the structural optimization of the damping assembly, the interaction between the fluid medium in the damping chamber and the damping piston is utilized to realize precise damping control of the valve cover operation. The fine hole in the damping piston generates resistance when the fluid medium moves in the piston, thereby effectively slowing down the opening and closing speed of the valve cover, avoiding vibration and impact caused by rapid operation, significantly improving the operation stability and service life of the safety valve, and enhancing the reliability and safety of the safety valve in the pressure monitoring and adjustment process.

[0020] Preferably, the top of the main spring is provided with a pressing plate, the bottom of the pressing plate is rotatably connected with the valve rod, one end of the top of the valve rod is threadedly connected with the top of the sealing cover, the sealing cover is connected with the valve seat shell through bolts, and an adjusting cap is sleeved on one end of the top of the valve rod.

[0021] Through the structural cooperation of the pressing plate at the top of the main spring, the valve rod, and the adjusting cap, flexible adjustment of the opening pressure of the safety valve is realized. The rotatable connection of the pressing plate and the valve rod and the threaded connection of the valve rod and the sealing cover enable the opening pressure threshold of the safety valve to be accurately adjusted by rotating the adjusting cap, thereby changing the opening pressure threshold of the safety valve. This adjustable design enables the safety valve to adapt to pressure requirements under different working conditions, thereby enhancing its adaptability and reliability in pressure monitoring and safety protection.

[0022] The positioning assembly comprises a connecting cover, the connecting cover is installed outside the sealing cover through bolts, the sealing cover is threadedly connected with the outer wall of the adjusting screw, and the adjusting screw is provided with a compression spring at one end. Through the cooperation of the connecting cover, the adjusting screw, and the compression spring of the positioning assembly, stable positioning and pressure adjustment of the damping assembly are realized, thereby ensuring the stability and reliability of the safety valve during operation.

[0023] Preferably, the compression spring is located inside the sealing cover, the compression spring is provided with a positioning pin at one end, the positioning pin is clamped with the outer wall of the damping chamber through the compression spring, one end of the positioning pin is in a hemispherical surface, and the outer wall of the damping chamber is provided with an annular groove;

[0024] Through the cooperation of the compression spring and the positioning pin, the precise positioning and stable clamping of the damping chamber are realized, the compression spring is located in the sealing cover, one end of the compression spring is connected with the positioning pin, the positioning pin is clamped with the annular groove on the outer wall of the damping chamber, the stable position of the damping chamber in the running process is ensured, and meanwhile, the semi-spherical surface of the positioning pin is designed to help realize flexible clamping and releasing when the pressure changes, and the stability and reliability of the safety valve in the pressure monitoring and adjustment process are further enhanced.

[0025] Preferably, the pressure relief assembly comprises a valve core installed inside the valve seat shell, a wrench is installed at the top of the valve core, the inside of the valve core is in a hollow structure, a hole groove is arranged at the top and one side of the bottom of the valve core, the valve core is aligned with the first flow-through hole and the second flow-through hole through rotating cooperation, and the first flow-through hole and the second flow-through hole are respectively communicated with the passages at both ends of the valve seat shell.

[0026] Through the cooperation of the valve core and the wrench of the pressure relief assembly, the manual pressure relief function of the safety valve is realized, the hollow structure and the hole groove in the inside of the valve core enable the valve core to be aligned with the flow-through holes in the valve seat shell, the valve core is driven to rotate by rotating the wrench, so that the flow-through path of the medium is controlled, manual pressure relief is realized, a means for quickly reducing pressure in an emergency or when human intervention is needed is provided for the system, and the flexibility and reliability of the safety valve are enhanced.

[0027] The application provides a safety valve for pressure monitoring.

[0028] In actual application, the safety valve for pressure monitoring is connected with a pipeline through the valve seat shell, the pressure change inside the pipeline can be effectively monitored and responded through the electronic pressure gauge at one side thereof; when the pressure in the pipeline rises, the electronic pressure gauge timely alarms, the medium pushes the valve cover to move upwards, the valve cover drives the support block and the damping piston in the damping chamber to rise and compress the main spring through the connecting rod; under the clamping action of the positioning pin, the position of the damping chamber is fixed, the damping piston extrudes the fluid medium in the damping chamber during the rising process, so that the fluid medium flows through the fine hole in the piston; due to the resistance of the fluid medium, the moving speed of the damping piston is controlled to be slow, so that the opening process of the valve cover is stable, and the internal vibration caused by rapid action is avoided; when the pressure in the pipeline returns to normal, the main spring pushes the damping piston to reset, the fluid medium returns through the fine hole, the damping piston slowly descends, drives the valve cover to reset stably and close the passage; through the precise control of the damping piston, the speed of the valve cover during the whole up-and-down movement is uniform and slow, the vibration phenomenon of the valve cover is effectively avoided, and the operation stability and service life of the safety valve are significantly improved. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a whole structure schematic view of the application;

[0030] Figure 2 is a schematic view of the structure of the present application;

[0031] Figure 3 is a schematic view of the internal structure of the present application;

[0032] Figure 4 is a schematic view of the structure of the present application Figure 3 is a schematic view of the structure of the present application

[0033] Figure 5 is a schematic view of the structure of the present application Figure 3 is a schematic view of the structure of the present application

[0034] Figure 6 is a schematic view of the structure of the present application

[0035] Figure 7 is a schematic view of the structure of the present application

[0036] Figure 8 is a schematic view of the structure of the present application

[0037] Figure 9 is a schematic view of the structure of the present application

[0038] In the figure, 1, valve seat assembly; 101, valve seat shell; 102, spring pin; 103, sealing ring; 104, limiting ring; 105, positioning spring; 106, communication groove; valve cover; 3, pressure mechanism; 301, sealing cover; 302, main spring; 303, lifting piston; 304, connecting rod; 305, isolation pad; 306, return spring; 307, damping piston; 308, damping chamber; 309, pressing sheet; 310, valve stem; 311, adjusting cap; 4, positioning assembly; 401, connecting cover; 402, adjusting bolt; 403, compression spring; 404, positioning pin; 5, pressure relief assembly; 501, valve core; 502, wrench; 503, first flow-through hole; 504, second flow-through hole. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0040] Embodiment 1: Please refer to Figures 1-9 The technical solutions provided by the embodiments of the present application are as follows: a safety valve for pressure monitoring, comprising:

[0041] The valve seat assembly 1 is connected to the external pipeline at both ends.

[0042] Valve cover 2, installed inside the valve seat assembly 1;

[0043] Pressure mechanism 3, connected with valve cover 2, pressure mechanism 3 is installed above valve seat assembly 1, used to cooperate with valve cover 2 to control the opening and closing of safety valve;

[0044] Positioning assembly 4, installed on one side of pressure mechanism 3, positioning the internal components of pressure mechanism 3;

[0045] Pressure relief assembly 5, located inside valve seat assembly 1, used for internal pressure relief of safety valve;

[0046] The safety valve can effectively reduce the vibration of the valve cover 2 during opening and closing through the damping effect of the pressure mechanism 3, significantly improving the stability and reliability of the system. The damping mechanism of the pressure mechanism 3 allows the valve cover 2 to move slowly and smoothly when the system pressure fluctuates, avoiding impact and vibration caused by rapid action. This design not only prolongs the service life of the safety valve, but also improves the sealing performance, ensuring that the safety valve can maintain good operating state when high flow rate medium passes through. At the same time, the damping effect provides a more stable environment for pressure monitoring, so that the safety valve can more accurately monitor the changes of internal pressure of the system, respond and adjust the pressure relief speed in time, further enhancing the performance of the safety valve in pressure monitoring and safety protection. This design combining pressure monitoring and damping function provides more efficient and safer protection for industrial systems.

[0047] Example 2: please refer to Figures 1-9 The embodiment of the present application provides a technical scheme: a safety valve for pressure monitoring, comprising: a valve seat assembly 1 comprising a valve seat shell 101, the valve seat shell 101 is provided with a pipeline flow medium outlet and inlet at both ends respectively, and the valve seat shell 101 is embedded with a sealing ring 103 on the surface of both ends, the sealing ring 103 is distributed on both sides of the communication groove 106, the communication groove 106 is opened on the surface of both ends of the valve seat shell 101, the communication groove 106 is in ring shape structure, the communication groove 106 is inserted with a spring pin 102 inside; the spring pin 102 is in sliding contact with the inner wall of the valve seat shell 101, the spring pin 102 is externally sleeved with a positioning spring 105, one end of the spring pin 102 is provided with a limiting ring 104, the limiting ring 104 is welded with the valve seat shell 101;

[0048] By setting the communication groove 106 at both ends of the valve seat shell 101 and the external pipeline flange connection, when the sealing performance of the valve seat shell 101 and the external flange connection decreases to cause leakage, the medium will first enter the communication groove 106 through the leaked gap, and then the pressure in the communication groove 106 will increase, and then the ejector pin 102 in the communication groove 106 can be ejected, and the operator can find the aging leakage of the sealing ring 103 in time through the ejection of the ejector pin 102, so as to replace it in time, and when the pressure in the communication groove 106 returns to normal, the ejector pin 102 can be reset under the push of the positioning spring 105;

[0049] Thus, the leakage problem caused by the aging of the sealing ring 103 can be found in time, and the operator can be directly reminded to replace the sealing ring 103 through the ejection of the ejector pin 102, so as to effectively avoid the safety hazard caused by the sealing failure, ensure the sealing performance and reliability of the safety valve, and at the same time, the ejector pin 102 can be automatically reset when the pressure returns to normal, so as to ensure the long-term stable operation of the device and further enhance the function of the safety valve in pressure monitoring and safety protection.

[0050] Example 3: Please refer to Figures 1-9The embodiment of the present application provides a technical scheme: a safety valve for pressure monitoring, comprising: a pressure mechanism 3 comprising a damping assembly sealing cover 301, an isolation pad 305 is arranged between the sealing cover 301 and a valve seat shell 101, the damping assembly is arranged inside the sealing cover 301, a main spring 302 is arranged above the damping assembly, the main spring 302 is located above the damping assembly, a connecting rod 304 is penetrated through the inside of the damping assembly, one end of the bottom of the connecting rod 304 is connected with a valve cover 2, one end of the top of the connecting rod 304 is sleeved with a support block 306, the support block 306 is in sliding contact with the inner wall of the sealing cover 301, and the support block 306 is located at the bottom of the main spring 302; the damping assembly comprises a damping bin 308, a damping piston 307 is arranged inside the damping bin 308, a fine hole is formed in the inside of the damping piston 307, the fine hole is used for medium flow in the inside of the damping bin 308, the damping piston 307 is fixedly installed outside the connecting rod 304, the outer wall of the connecting rod 304 is in sliding contact with the damping bin 308, and the inside of the damping bin 308 is filled with fluid medium; a pressing piece 309 is arranged at the top of the main spring 302, the bottom of the pressing piece 309 is rotationally connected with a valve rod 310, one end of the top of the valve rod 310 is screwedly connected with the top of the sealing cover 301, the sealing cover 301 is connected with the valve seat shell 101 through bolts, and one end of the top of the valve rod 310 is sleeved with an adjusting cap 303; a positioning assembly 4 comprises a connecting cover 401, the connecting cover 401 is installed outside the sealing cover 301 through bolts, the sealing cover 301 is screwedly connected with the outer wall of an adjusting bolt 402, and the adjusting bolt 402 is provided with a pressing spring 403 at one end; the pressing spring 403 is located inside the sealing cover 301, the pressing spring 403 is provided with a positioning pin 404 at one end, the positioning pin 404 is clamped with the outer wall of the damping bin 308 through the pressing spring 403, one end of the positioning pin 404 is in a hemispherical surface, and the outer wall of the damping bin 308 is provided with an annular groove;

[0051] The device is used by connecting one end of the valve seat shell 101 with the pipeline. When the internal pressure of the pipeline increases, the medium will push the valve cover 2 upwards, and the valve cover 2 can drive the damping piston 307 in the damping chamber 308 and the supporting block 306 through the connecting rod 304 to move upwards and compress the main spring 302. Under the clamping action of the positioning pin 404, the position of the damping chamber 308 can be fixed, and the damping piston 307 moves upwards while extruding the fluid medium in the damping chamber 308, so that the fluid medium can be extruded to pass through the fine hole in the damping piston 307. Due to the resistance of the fluid medium, the damping piston 307 slowly moves upwards, and the end cover is limited by the damping piston 307 and slowly rises when opening. When the internal pressure of the pipeline returns to normal, the damping piston 307 is reset under the action of the main spring 302. In the process of resetting, the fluid medium below the damping piston 307 flows back to the upper part of the damping piston 307 through the internal fine hole, so that the damping piston 307 can slowly reset downwards. The damping piston 307 can drive the valve cover 2 to slowly reset and close the passage through the connecting rod 304. The damping piston 307 limits the movement speed of the valve cover 2 during upward and downward movement, thereby avoiding the phenomenon of internal vibration of the valve cover 2;

[0052] When the internal pressure of the pipeline increases sharply, the valve cover 2 cannot be quickly relieved due to the resistance of the damping piston 307, which will cause the valve cover 2 to receive a larger thrust. The thrust will overcome the clamping force between the positioning pin 404 and the outer wall of the damping chamber 308, so that the compression spring 403 at one end of the positioning pin 404 can be compressed, and the positioning pin 404 can be separated from the clamping of the outer wall of the damping chamber 308. The damping assembly can move upwards, and the damping effect of the connecting rod 304 disappears, so that the valve cover 2 can directly drive the damping assembly and the supporting block 306 to move upwards through the connecting rod 304, thereby compressing the main spring 302 to quickly open the valve cover 2 for pressure relief, thereby greatly improving the safety of the safety valve in use;

[0053] In addition, after the internal pressure of the pipeline increases sharply and is relieved, the main spring 302 pushes the connecting rod 304 and the valve cover 2 to reset. In the process of resetting, the damping piston 307 at the bottom can push the damping chamber 308 to move downwards, so that the damping chamber 308 can reset, and the damping chamber 308 can be re-clamped with the positioning pin 404. By rotating the adjusting bolt 402, the position of the adjusting bolt 402 can be adjusted, the compression spring 403 at one end of the adjusting bolt 402 can be compressed, the pressure applied by the compression spring 403 to the positioning pin 404 can be adjusted, the clamping force between the damping chamber 308 and the positioning pin 404 can be adjusted, and the pressure value triggering the damping chamber 308 to separate from the positioning pin 404 when the internal pressure of the pipeline increases sharply can be adjusted.

[0054] Thus, by the damping design of the pressure mechanism 3, the stability and safety of the safety valve during pressure monitoring and adjustment are significantly improved, and the cooperation of the damping piston 307 and the damping bin 308 can effectively slow down the moving speed of the valve cover 2, avoiding the vibration of the valve cover 2 caused by rapid opening and closing, thereby prolonging the service life of the safety valve and improving its sealing performance. At the same time, when the internal pressure of the pipeline increases sharply, the safety valve can quickly respond and release the pressure, ensuring the safety of the system. In addition, by adjusting the bolt 402 and the compression spring 403, the clamping force between the damping bin 308 and the positioning pin 404 can be flexibly adjusted, thereby realizing precise adjustment of the trigger pressure value, further enhancing the adaptability and reliability of the safety valve under different working conditions. This design not only optimizes the performance of the safety valve, but also enhances its functions in pressure monitoring and safety protection.

[0055] Embodiment 4: please refer to Figures 1-9 The embodiment of the present application provides a technical scheme: a safety valve for pressure monitoring, comprising: a pressure relief assembly 5 comprising a valve core 501, the valve core 501 is installed inside the valve seat shell 101, the valve core 501 is installed with a wrench 502 at the top, the valve core 501 is hollow inside, the valve core 501 is provided with a hole slot at the top and one side of the bottom, the valve core 501 is aligned with the first flow-through hole 503 and the second flow-through hole 504 through rotating cooperation, the first flow-through hole 503 and the second flow-through hole 504 are respectively communicated with the passages at both ends of the valve seat shell 101;

[0056] By rotating the wrench 502, the valve core 501 inside the valve seat shell 101 can be rotated, and then the passage inside the valve core 501 can be aligned with the first flow-through hole 503 and the second flow-through hole 504, so that the medium inside the pipeline can flow through the valve core 501, and the internal pressure of the pipeline can be manually relieved;

[0057] Thus, by rotating the wrench 502, the passage inside the valve core 501 is aligned with the flow-through hole, allowing the medium in the pipeline to flow through the valve core 501, realizing manual pressure relief. This design provides a means for operators to quickly reduce system pressure in emergency situations or when human intervention is required, enhancing the flexibility and reliability of the safety valve and further improving the performance of the system in pressure monitoring and safety protection.

[0058] The foregoing merely illustrates the principles of the application and application of its leading features. This application is not limited to the illustrative embodiments shown and described herein. Rather, this application is capable of operating within a further range of conditions and environments than those specifically described herein, and further modifications can be made without departing from the spirit or scope of the application. Accordingly, the description is to be construed as illustrative only and not restrictive of the broad disclosure or application of the application. The specification and drawings are, accordingly, to be regarded simply as illustrative and with the scope of the application being measured by the appended claims, and not with the specification. No admission is made that any reference constitutes prior art. It is my intent, therefore, to be limited only as appears in the following claims.

[0059] Furthermore, it should be understood that although the description above relates to embodiments, not every embodiment contains only one independent technical solution, and the description above is only for the sake of clarity, and those skilled in the art should understand the description as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A relief valve for pressure monitoring, characterized by, The utility model relates to a safety valve, including: Valve seat assembly (1) both ends are connected with external pipeline, Valve cover (2) is installed inside valve seat assembly (1), Pressure mechanism (3) is connected with valve cover (2), and pressure mechanism (3) is installed above valve seat assembly (1), is used for cooperating valve cover (2) control safety valve opening and closing, Positioning assembly (4) is installed to one side of pressure mechanism (3), and the inside component of pressure mechanism (3) is positioned, Pressure relief assembly (5) is located inside valve seat assembly (1), and is used for the pressure relief of safety valve inside, The positioning assembly (4) includes connecting cover (401), the connecting cover (401) is installed to the outside of sealing cover (301) by bolt, the sealing cover (301) is connected with the outer wall of adjusting screw (402) threadedly, one end of adjusting screw (402) is provided with compression spring (403), The compression spring (403) is located inside sealing cover (301), one end of compression spring (403) is provided with positioning pin (404), the positioning pin (404) is clamped with compression spring (403) and the outer wall of damping bin (308), one end of positioning pin (404) is hemispherical surface, and the outer wall of damping bin (308) is provided with annular recess, The pressure relief assembly (5) includes valve core (501), the valve core (501) is installed inside valve seat shell (101), the valve core (501) top is installed with spanner (502), the valve core (501) is hollow inside, the valve core (501) top and one side of bottom are provided with hole groove, the valve core (501) is aligned with first flow-through hole (503) and second flow-through hole (504) through rotation cooperation, first flow-through hole (503) and second flow-through hole (504) are communicated with the passageway of both ends of valve seat shell (101) respectively.

2. A relief valve for pressure monitoring according to claim 1, characterized in that: The valve seat assembly (1) includes valve seat shell (101), the both ends of valve seat shell (101) are provided with pipeline flow-through medium outlet and inlet respectively, and the surface of both ends of valve seat shell (101) is embedded with sealing ring (103), the sealing ring (103) is distributed on both sides of the edge of communication groove (106), the surface of both ends of valve seat shell (101) is provided with communication groove (106), the communication groove (106) is annular structure, the communication groove (106) is annular structure, the communication groove (106) is inserted with elastic pin (102) inside, The elastic pin (102) is in sliding contact with the inner wall of valve seat shell (101), the elastic pin (102) is externally fitted with positioning spring (105), one end of elastic pin (102) is provided with limit ring (104), the limit ring (104) is welded with valve seat shell (101).

3. A relief valve for pressure monitoring according to claim 2, characterized in that: The pressure mechanism (3) comprises a damping assembly sealing cover (301), an isolation pad (305) is arranged between the sealing cover (301) and a valve seat shell (101), a damping assembly is arranged inside the sealing cover (301), a main spring (302) is arranged above the damping assembly, a connecting rod (304) penetrates the damping assembly, one end of the bottom of the connecting rod (304) is connected with a valve cover (2), a supporting block (306) is sleeved on one end of the top of the connecting rod (304), the supporting block (306) is in sliding contact with the inner wall of the sealing cover (301), and the supporting block (306) is located at the bottom of the main spring (302).

4. A relief valve for pressure monitoring according to claim 3, characterized in that: The damping assembly comprises a damping bin (308), a damping piston (307) is arranged inside the damping bin (308), a fine hole is formed in the damping piston (307), the fine hole is used for medium flow in the damping bin (308), the damping piston (307) is fixedly installed outside the connecting rod (304), the outer wall of the connecting rod (304) is in sliding contact with the damping bin (308), and the damping bin (308) is filled with a fluid medium.

5. A relief valve for pressure monitoring according to claim 4, characterized in that: A pressing piece (309) is arranged at the top of the main spring (302), the bottom of the pressing piece (309) is rotationally connected with a valve rod (310), one end of the top of the valve rod (310) is screwedly connected with the top of the sealing cover (301), the sealing cover (301) is connected with the valve seat shell (101) through bolts, and an adjusting cap (303) is sleeved on one end of the top of the valve rod (310).

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