Automatic safety valve verification device

Abstract

The invention discloses an automatic safety valve verification device, and belongs to the technical field of safety valve detection. An automatic safety valve verification device comprises a support with a hollow interior, and further comprises a tank body arranged on the support, the top of the tank body is fixedly connected with a communicating pipe, the communicating pipe is fixedly provided with a valve, the top of the communicating pipe is fixedly connected with an annular table, and the annular table is provided with a clamp; the pump body is fixedly mounted on the tank body, the output end of the pump body extends into the tank body, and a driving part for driving the tank body to rotate in a reciprocating manner is arranged on the support; the safety valve can be detected and verified in a dynamic environment, and the verification and detection precision of the safety valve is improved.

Description

Technical Field

[0001] The invention relates to the technical field of safety valve detection, and in particular to an automatic safety valve calibration device. Background Art

[0002] A safety valve is an automatic valve used to protect a closed system from overpressure. When the pressure in the system exceeds the predetermined safety limit, the safety valve will open to release the excess pressure, thereby preventing a potentially dangerous situation. Once the pressure falls back to a safe range, the safety valve will automatically close and stop the discharge of the medium (such as gas or liquid). During the production and use of the safety valve, the safety valve needs to be calibrated to ensure that it can be used for normal pressure relief.

[0003] In the prior art, when calibrating a safety valve, it is mainly subjected to a pressure value higher than a preset value to observe whether the excess pressure can be discharged in time and whether it can automatically close when the pressure reaches below the preset value. In practice, the working environment of the safety valve is relatively complex and may be affected by vibration or shaking. The existing calibration device can only perform calibration work, and it is difficult to accurately calibrate whether the safety valve can be used stably in a complex working environment. Summary of the invention

[0004] The purpose of the present invention is to solve the problem in the prior art that the safety valve calibration device has relatively single function and is difficult to accurately calibrate whether the safety valve can be used stably in a complex working environment, and to propose an automated safety valve calibration device.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: An automated safety valve calibration device comprises a support with a hollow interior, and also comprises: a tank body arranged on the support, wherein a connecting pipe is fixedly connected to the top of the tank body, a valve is fixedly installed on the connecting pipe, an annular platform is fixedly connected to the top of the connecting pipe, and a clamp is provided on the annular platform; a pump body fixedly installed on the tank body, wherein the output end of the pump body extends into the tank body, and a driving part for driving the tank body to reciprocate is provided on the support.

[0006] In order to facilitate driving the safety valve to rotate reciprocally, preferably, the driving part includes a driving motor fixedly installed on the inner bottom of the support, the output shaft of the driving motor is fixedly installed with a reciprocating screw, the outer wall of the reciprocating screw is installed with a reciprocating slider slidingly connected to the inner wall of the support, wherein the support is provided with a circular hole, the tank body is sleeved in the circular hole, the bottom of the tank body is fixedly connected with a vertical shaft, the outer wall of the vertical shaft is fixedly installed with a driven gear, and the reciprocating slider is fixedly connected with a rack meshing with the driven gear.

[0007] In order to facilitate driving the safety valve to shake up and down when rotating, preferably, the inner wall of the support is fixedly connected to a lower annular plate, and a plurality of circumferentially distributed protrusions are fixedly connected to the lower annular plate, and a roller pressed on the lower annular plate is rotatably installed at the lower end of the tank body.

[0008] In order to enable the tank body to return downward more quickly, further, an upper annular plate is fixedly connected to the outer wall of the tank body, an elastic member is fixedly installed on the inner top of the support, and the telescopic end of the elastic member is pressed against the top of the upper annular plate.

[0009] In order to facilitate the fixing of the safety valve, further, the clamp includes a plurality of brackets fixedly connected to the annular table, and a pressure rod is rotatably installed on the plurality of brackets through a rotating rod, and a swinging part for driving the pressure rod to swing is provided on the annular table.

[0010] In order to facilitate the start of the tilting and swinging of the pressure rod, the swinging part further includes a device hole arranged on the annular table, a piston is slidably installed in the device hole, a pull rod is fixedly connected to the piston, and the top of the pull rod is connected to one end of the pressure rod through a pull rope.

[0011] In order to automatically realize the swinging operation of the pressure rod, further, the elastic member is an elastic airbag, and the elastic member is fixedly connected with an intake pipe and an exhaust pipe connected thereto, and the end of the exhaust pipe extends into the device hole, and the device hole is provided with an overflow pipe extending to the outer wall of the annular platform, and an overflow valve is fixedly installed in the overflow pipe.

[0012] In order to facilitate the positioning and sealing of the safety valve, preferably, a plurality of circumferentially distributed positioning rods are fixedly connected to the upper end of the annular platform, and a sealing ring is fixedly installed at the upper end of the connecting pipe.

[0013] In order to facilitate heat dissipation of the drive motor and the pump body, further, an air inlet is provided on the outer wall of the support, a filter element is fixedly installed in the air inlet, and the end of the air intake pipe is located in the cavity of the support.

[0014] In order to more conveniently fix the safety valve, further, a telescopic device is fixedly installed on the bottom of the annular platform, and the telescopic end of the telescopic device extends into the device hole.

[0015] Compared with the prior art, the present invention provides an automated safety valve calibration device, which has the following beneficial effects: 1. The automated safety valve calibration device drives the reciprocating screw to rotate through the driving motor, and the rack drives the driven gear to rotate reciprocatingly. The driven gear drives the tank body to rotate reciprocatingly through the vertical axis, and the tank body drives the safety valve on the top to rotate reciprocatingly, so that the safety valve can be tested and calibrated in a dynamic environment, thereby improving the calibration and detection accuracy of the safety valve.

[0016] 2. The automated safety valve calibration device drives the roller at the bottom to roll back and forth on the lower annular plate through the tank body. Therefore, the reciprocating rotation of the tank body will not only drive the safety valve to rotate back and forth, but also drive the safety valve to shake up and down, so as to make the calibration environment of the safety valve more complex and more in line with the actual situation, thereby further improving the accuracy of the calibration of the safety valve.

[0017] 3. The automatic safety valve calibration device, when the elastic part is squeezed, the air pressure in the device hole will increase, so that the piston will move upward and drive the pull rod to move upward. The pull rod will pull one end of the pressure rod through the pull rope, and the other end of the pressure rod will press down on the flange of the safety valve, so that the safety valve can be fixed automatically, and the operation is more convenient.

[0018] 4. The automated safety valve calibration device draws air into the cavity of the support through the suction pipe, and the cavity of the support draws air through the air inlet. The filter element in the air inlet filters the dust in the air. When the air passes through the cavity in the support, it can also take away part of the temperature on the pump body and the drive motor, thereby completing the heat dissipation work and improving the working stability of the entire device.

[0019] 6. The automated safety valve calibration device drives the upper annular plate to press the elastic member through the tank body. When the tank body is reset downward, the elastic force of the elastic member enables the tank body to move downward and reset more efficiently. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the axonometric structure from a first perspective of an automated safety valve calibration device proposed by the present invention; Figure 2 A schematic diagram of the axonometric structure from a second perspective of an automated safety valve calibration device proposed by the present invention; Figure 3 A schematic diagram of a cutaway axonometric structure of an automated safety valve inspection device proposed by the present invention; Figure 4 This is a schematic diagram of the tank axonometric structure of an automated safety valve calibration device proposed by the present invention; Figure 5 This is a schematic diagram of the axonometric structure of a support of an automated safety valve calibration device proposed by the present invention; Figure 6 A schematic diagram of a partially cutaway axonometric structure of an automated safety valve calibration device proposed by the present invention; Figure 7 A schematic diagram of the vertical isometric structure of an automated safety valve calibration device proposed by the present invention; Figure 8 This is a schematic diagram of the isometric structure of a pressure rod of an automated safety valve calibration device proposed in the present invention.

[0021] In the figure: 1. support; 2. tank body; 3. through pipe; 4. annular table; 5. pump body; 6. positioning rod; 7. round hole; 8. vertical axis; 9. driven gear; 10. rack; 11. reciprocating screw; 12. driving motor; 13. reciprocating slider; 14. bracket; 15. rotating rod; 16. pressure rod; 17. pressure gauge; 18. installation hole; 19. piston; 20. pull rod; 21. pull rope; 22. roller; 23. lower annular plate; 24. bump; 25. upper annular plate; 26. elastic member; 27. exhaust pipe; 28. suction pipe; 29. ​​overflow pipe; 30. filter element; 31. air inlet; 32. valve; 33. telescopic device. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0024] Embodiment 1: Reference Figure 1-Figure 8 , an automated safety valve calibration device, comprising a support 1 with a hollow interior, and the appearance of the support 1 is approximately cylindrical, and also comprises: a tank body 2 with a cylindrical appearance, which is arranged on the support 1, and a pressure gauge 17 for checking the pressure value is installed on the tank body 2, wherein a connecting pipe 3 is fixedly connected to the top of the tank body 2, a valve 32 is fixedly installed on the connecting pipe 3, an annular platform 4 is fixedly connected to the top of the connecting pipe 3, a clamp for fixing the safety valve is provided on the annular platform 4, a plurality of circumferentially distributed positioning rods 6 are fixedly connected to the upper end of the annular platform 4, the number of the positioning rods 6 corresponds to the flange holes on the safety valve, and the number is 6, and a sealing ring is fixedly installed at the upper end of the connecting pipe 3 to improve the sealing between the two; a pump body 5 fixedly installed on the tank body 2, the pump body 5 is used to transport air into the tank body 2, wherein the output end of the pump body 5 extends into the tank body 2, and a driving part for driving the tank body 2 to reciprocate is provided on the support 1.

[0025] Specifically, when in use, the port of the safety valve is fixed on the upper port of the through pipe 3, and then the pump body 5 and the valve 32 are opened. The pump body 5 will transport air into the tank body 2 to increase the pressure, and the air in the tank body 2 will enter the safety valve through the through pipe 3. During this period, the safety valve is observed. When the pressure value reaches the same as the preset value of the safety valve, check whether the safety valve starts to release pressure. If the pressure does not start to be released and the pressure is released before the pressure reaches the preset value, the safety valve is judged to be unqualified, and then the pump body 5 is closed. When the pressure in the tank body 2 is gradually discharged to the preset value, the safety valve is observed. If it is still continuing to release pressure, it is judged to be unqualified.

[0026] Embodiment 2: Reference Figure 3 , Figure 4 as well as Figure 7 , which is basically the same as the first embodiment, and further discloses a specific implementation scheme of the driving unit.

[0027] The above-mentioned driving part includes a driving motor 12 fixedly installed on the inner bottom of the support 1, a reciprocating screw 11 fixedly installed on the output shaft of the driving motor 12, and a reciprocating slider 13 slidably connected to the inner wall of the support 1 is installed on the outer wall of the reciprocating screw 11, wherein a circular hole 7 is provided on the support 1, the tank body 2 is sleeved in the circular hole 7, a vertical shaft 8 is fixedly connected to the bottom of the tank body 2, a driven gear 9 is fixedly installed on the outer wall of the vertical shaft 8, and a rack 10 meshingly connected to the driven gear 9 is fixedly connected to the reciprocating slider 13.

[0028] Specifically, when in use, fix the port of the safety valve on the upper port of the through pipe 3, then open the pump body 5 and the valve 32, the pump body 5 will transport air into the tank body 2 to increase the pressure, and the air in the tank body 2 will enter the safety valve through the through pipe 3. During this period, observe the safety valve. When the pressure value reaches the same as the preset value of the safety valve, check whether the safety valve starts to release pressure. If the pressure does not start to be released and the pressure is released before the pressure reaches the preset value, it is judged that the safety valve is unqualified, and then close the pump body 5. When the pressure in the tank body 2 is gradually discharged to the preset value, observe the safety valve. If the pressure is still being released, it is judged as unqualified; during the verification, the drive motor 12 is turned on, and the drive motor 12 will drive the reciprocating screw 11 to rotate, and the reciprocating screw 11 will drive the reciprocating slider 13 to slide back and forth in the support 1, and drive the rack 10 to slide back and forth, and the rack 10 will drive the driven gear 9 to rotate back and forth, and the driven gear 9 will drive the tank body 2 to rotate back and forth through the vertical shaft 8, and the tank body 2 will drive the safety valve on the top to rotate back and forth, so that the safety valve is in a dynamic environment for detection and verification, thereby improving the verification and detection accuracy of the safety valve.

[0029] Embodiment three: Reference Figure 3-Figure 5 , which is basically the same as the second embodiment, and further, a specific implementation scheme for making the safety valve vibrate up and down is specifically added.

[0030] The inner wall of the above-mentioned support 1 is fixedly connected with a lower annular plate 23, and a plurality of circumferentially distributed protrusions 24 are fixedly connected to the lower annular plate 23. The number of the protrusions 24 is 3-6, and the preferred number in this application is 3. A roller 22 is rotatably installed on the lower end of the tank body 2 and pressed on the lower annular plate 23; the outer wall of the tank body 2 is fixedly connected with an upper annular plate 25, and an elastic member 26 is fixedly installed on the inner top of the support 1, and the telescopic end of the elastic member 26 is pressed against the top of the upper annular plate 25.

[0031] Specifically, when in use, fix the port of the safety valve on the upper port of the through pipe 3, then open the pump body 5 and the valve 32, the pump body 5 will transport air into the tank body 2 to increase the pressure, and the air in the tank body 2 will enter the safety valve through the through pipe 3. During this period, observe the safety valve. When the pressure value reaches the same as the preset value of the safety valve, check whether the safety valve starts to release pressure. If it does not start to release pressure or releases pressure when the pressure does not reach the preset value, the safety valve is judged to be unqualified, and then close the pump body 5. When the pressure in the tank body 2 is gradually discharged to the preset value, observe the safety valve. If it is still continuing to release pressure, it is judged to be unqualified. When the tank body 2 reciprocates, the tank body 2 will also drive the roller 22 at the bottom to roll reciprocatingly on the lower annular plate 23. When the roller 22 passes the protrusion 24, the protrusion 24 will press the roller 22 upward, and the roller 22 will drive the tank body 2 and the safety valve on the top to press upward. When the roller 22 passes the protrusion 24, the tank body 2 will drive the safety valve on the top to slide down and reset. Therefore, the reciprocating tank body 2 will not only drive the safety valve to reciprocate, but also drive the safety valve to shake up and down, so as to make the verification environment of the safety valve more complex and more in line with the actual situation, thereby further improving the accuracy of verifying the safety valve.

[0032] Embodiment 4: Reference Figure 3-Figure 6 as well as Figure 8 , which is basically the same as the third embodiment, and furthermore, specifically discloses a specific implementation scheme of the clamp.

[0033] The clamp includes a plurality of brackets 14 fixedly connected to the annular table 4, the number of the brackets 14 is 4-8, and the preferred number of the present application is 6. A pressure rod 16 is rotatably installed on each of the plurality of brackets 14 through a rotating rod 15. A swinging portion for driving the pressure rod 16 to swing is provided on the annular table 4. The swinging portion includes a device hole 18 provided on the annular table 4, a piston 19 is slidably installed in the device hole 18, a pull rod 20 is fixedly connected to the piston 19, and the top of the pull rod 20 is connected to one end of the pressure rod 16 through a pull rope 21; the elastic member 26 is an elastic airbag, an air intake pipe 28 and an exhaust pipe 27 connected thereto are fixedly connected to the elastic member 26, a one-way valve is fixedly installed in both the air intake pipe 28 and the exhaust pipe 27, and the end of the exhaust pipe 27 extends into the device hole 18, an overflow pipe 29 extending to the outer wall of the annular table 4 is provided in the device hole 18, an overflow valve is fixedly installed in the overflow pipe 29, and the overflow valve has a manual opening function.

[0034] Specifically, when in use, the port of the safety valve is fixed on the upper port of the through pipe 3, and then the pump body 5 and the valve 32 are opened. The pump body 5 will transport air into the tank body 2 to increase the pressure, and the air in the tank body 2 will enter the safety valve through the through pipe 3. During this period, the safety valve is observed. When the pressure value reaches the same as the preset value of the safety valve, check whether the safety valve starts to release pressure. If the pressure relief does not start and the pressure is relieved when the pressure does not reach the preset value, the safety valve is judged to be unqualified, and then the pump body 5 is closed. When the pressure in the tank body 2 is gradually discharged to the preset value, the safety valve is observed. If the pressure relief is still continuing, it is judged to be unqualified. When the tank body 2 is pressed upward, the tank body 2 will drive the upper annular plate 25 to press the elastic member 26. When the tank body 2 is reset downward, the elastic force of the elastic member 26 will make the tank body 2 move downward and reset more efficiently.

[0035] Before the verification test, the drive motor 12 is started, and the elastic member 26 will be intermittently squeezed. When the elastic member 26 is squeezed, air will be blown to the inner bottom of the device hole 18 through the exhaust pipe 27, and the air pressure in the device hole 18 will increase, thereby causing the piston 19 to move upward and drive the pull rod 20 to move upward. The pull rod 20 will pull one end of the pressure rod 16 through the pull rope 21, and the other end of the pressure rod 16 will press downward on the flange of the safety valve. The working principle of the pressure rod 16 is similar to that of a seesaw, which can automatically complete the fixing of the safety valve, and the operation is more convenient. When the elastic member 26 is elastically reset, it will absorb external air through the suction pipe 28. When the pressure at the bottom of the device hole 18 is too high, the overflow valve in the overflow pipe 29 will automatically open to discharge excess air. When the safety valve needs to be unloaded, the overflow valve can be manually opened to discharge the air in the device hole 18.

[0036] An air inlet 31 is disposed on the outer wall of the support 1 , and a filter element 30 for filtering dust in the air is fixedly installed in the air inlet 31 . The end of the air intake pipe 28 is located in the cavity of the support 1 .

[0037] Specifically, when the air intake pipe 28 draws air, the air intake pipe 28 will draw air into the cavity of the support 1, and the cavity of the support 1 will draw air through the air inlet 31, and the filter element 30 in the air inlet 31 will filter the dust in the air. When the air passes through the cavity in the support 1, it can also take away part of the temperature on the pump body 5 and the drive motor 12, thereby completing the heat dissipation work to improve the working stability of the entire device.

[0038] A telescopic device 33 is fixedly installed at the bottom of the annular platform 4 . The telescopic device 33 is an electric telescopic rod. The telescopic end of the telescopic device 33 extends into the device hole 18 .

[0039] Specifically, when the piston 19 needs to be pressed upward, the telescopic end of the telescopic device 33 can be used to push the piston 19 upward, which is simpler and more convenient to use.

[0040] When the automated safety valve calibration device is in use, the port of the safety valve is fixed on the upper port of the through pipe 3, and then the pump body 5 and the valve 32 are opened. The pump body 5 will transport air into the tank body 2 to increase the pressure, and the air in the tank body 2 will enter the safety valve through the through pipe 3. During this period, the safety valve is observed. When the pressure value reaches the same as the preset value of the safety valve, check whether the safety valve starts to release pressure. If the pressure does not start to be released and the pressure is released before the pressure reaches the preset value, the safety valve is judged to be unqualified, and then the pump body 5 is closed. When the pressure in the tank body 2 is gradually discharged to the preset value, the safety valve is observed. If it is still continuing to release pressure, it is judged to be unqualified.

[0041] During the verification, the drive motor 12 is turned on, and the drive motor 12 will drive the reciprocating screw 11 to rotate, and the reciprocating screw 11 will drive the reciprocating slider 13 to slide back and forth in the support 1, and drive the rack 10 to slide back and forth, and the rack 10 will drive the driven gear 9 to rotate back and forth, and the driven gear 9 will drive the tank body 2 to rotate back and forth through the vertical shaft 8, and the tank body 2 will drive the safety valve on the top to rotate back and forth, so that the safety valve is in a dynamic environment for detection and verification, thereby improving the verification and detection accuracy of the safety valve.

[0042] When the tank body 2 reciprocates, the tank body 2 will also drive the roller 22 at the bottom to roll reciprocatingly on the lower annular plate 23. When the roller 22 passes the protrusion 24, the protrusion 24 will press the roller 22 upward, and the roller 22 will drive the tank body 2 and the safety valve on the top to press upward. When the roller 22 passes the protrusion 24, the tank body 2 will drive the safety valve on the top to slide down and reset. Therefore, the reciprocating tank body 2 will not only drive the safety valve to reciprocate, but also drive the safety valve to shake up and down, so as to make the verification environment of the safety valve more complex and more in line with the actual situation, thereby further improving the accuracy of verifying the safety valve.

[0043] When the tank body 2 is pressed upward, the tank body 2 will drive the upper annular plate 25 to press the elastic member 26. When the tank body 2 is reset downward, the elastic force of the elastic member 26 will enable the tank body 2 to move downward and reset more efficiently.

[0044] Before the verification test, the drive motor 12 is started, and the elastic member 26 will be intermittently squeezed. When the elastic member 26 is squeezed, air will be blown to the inner bottom of the device hole 18 through the exhaust pipe 27, and the air pressure in the device hole 18 will increase, thereby causing the piston 19 to move upward and drive the pull rod 20 to move upward. The pull rod 20 will pull one end of the pressure rod 16 through the pull rope 21, and the other end of the pressure rod 16 will press downward on the flange of the safety valve. The working principle of the pressure rod 16 is similar to that of a seesaw, which can automatically complete the fixing of the safety valve, and the operation is more convenient. When the elastic member 26 is elastically reset, it will absorb external air through the suction pipe 28. When the pressure at the bottom of the device hole 18 is too high, the overflow valve in the overflow pipe 29 will automatically open to discharge excess air. When the safety valve needs to be unloaded, the overflow valve can be manually opened to discharge the air in the device hole 18.

[0045] When the air intake pipe 28 draws air, the air intake pipe 28 will draw air into the cavity of the support 1, and the cavity of the support 1 will draw air through the air inlet 31. The filter element 30 in the air inlet 31 will filter the dust in the air. When the air passes through the cavity in the support 1, it can also take away part of the temperature on the pump body 5 and the drive motor 12, thereby completing the heat dissipation work to improve the working stability of the entire device.

[0046] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automated safety valve calibration device, comprising a support (1) having a hollow interior, characterized in that: Also includes: The tank body (2) is arranged on the support (1). The top of the tank body (2) is fixedly connected to a connecting pipe (3), a valve (32) is fixedly installed on the connecting pipe (3), the top of the connecting pipe (3) is fixedly connected to an annular platform (4), and a clamp is provided on the annular platform (4); a pump body (5) fixedly mounted on the tank body (2), The output end of the pump body (5) extends into the tank body (2), and the support (1) is provided with a driving part for driving the tank body (2) to reciprocate.

2. An automated safety valve calibration device according to claim 1, characterized in that: The driving unit comprises a driving motor (12) fixedly mounted on the inner bottom of the support (1), a reciprocating screw (11) fixedly mounted on the output shaft of the driving motor (12), and a reciprocating slider (13) slidably connected to the inner wall of the support (1) mounted on the outer wall of the reciprocating screw (11). The support (1) is provided with a circular hole (7), the tank body (2) is sleeved in the circular hole (7), the bottom of the tank body (2) is fixedly connected to a vertical shaft (8), the outer wall of the vertical shaft (8) is fixedly mounted with a driven gear (9), and the reciprocating slider (13) is fixedly connected to a rack (10) meshing with the driven gear (9).

3. The automated safety valve calibration device according to claim 1, characterized in that: A lower annular plate (23) is fixedly connected to the inner wall of the support (1), a plurality of circumferentially distributed protrusions (24) are fixedly connected to the lower annular plate (23), and a roller (22) pressed on the lower annular plate (23) is rotatably mounted on the lower end of the tank body (2).

4. An automated safety valve calibration device according to claim 3, characterized in that: An upper annular plate (25) is fixedly connected to the outer wall of the tank body (2), an elastic member (26) is fixedly installed on the inner top of the support (1), and the telescopic end of the elastic member (26) is tightly pressed against the top of the upper annular plate (25).

5. An automated safety valve calibration device according to claim 4, characterized in that: The clamp comprises a plurality of brackets (14) fixedly connected to the annular platform (4), a pressure rod (16) being rotatably mounted on each of the plurality of brackets (14) via a rotating rod (15), and a swinging portion for driving the pressure rod (16) to swing is provided on the annular platform (4).

6. An automated safety valve calibration device according to claim 5, characterized in that: The swinging part comprises a device hole (18) arranged on the annular platform (4), a piston (19) is slidably mounted in the device hole (18), a pull rod (20) is fixedly connected to the piston (19), and the top of the pull rod (20) is connected to one end of the pressure rod (16) via a pull rope (21).

7. An automated safety valve calibration device according to claim 6, characterized in that: The elastic member (26) is an elastic airbag, and an air intake pipe (28) and an air discharge pipe (27) which are in communication therewith are fixedly connected to the elastic member (26). The end of the air discharge pipe (27) extends into the device hole (18). An overflow pipe (29) extending to the outer wall of the annular platform (4) is provided in the device hole (18), and an overflow valve is fixedly installed in the overflow pipe (29).

8. The automated safety valve calibration device according to claim 1, characterized in that: A plurality of circumferentially distributed positioning rods (6) are fixedly connected to the upper end of the annular platform (4), and a sealing ring is fixedly installed at the upper end of the connecting pipe (3).

9. An automated safety valve calibration device according to claim 7, characterized in that: An air inlet (31) is provided on the outer wall of the support (1), a filter element (30) is fixedly installed in the air inlet (31), and the end of the air intake pipe (28) is located in the cavity of the support (1).

10. An automated safety valve calibration device according to claim 5, characterized in that: A telescopic device (33) is fixedly mounted on the bottom of the annular platform (4), and a telescopic end of the telescopic device (33) extends into the device hole (18).

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