A pressure transmitter pressure test detection device

Abstract

This invention discloses a pressure transmitter testing device, relating to the field of pressure transmitter testing technology. It includes a test bench and a clamping platform. The clamping platform is fixedly installed on the top surface of the test bench, and a test insertion hole and a rotation groove are provided on the top surface of the clamping platform. This invention achieves rapid centripetal locking of the clamping plate by using a downward-moving drive boss of a pressure-bearing sliding sleeve to push a driven inclined block. The radial expansion of the sealing rubber is achieved by utilizing the displacement difference between the inner drive tube and the fixed detection tube, realizing a high-pressure airtight connection. Mechanical self-locking is achieved through the overtravel engagement of the limiting protrusion and the locking block. This overcomes the shortcomings of existing pressure transmitter testing devices, where frequent rotation leads to severe friction between the threads, and long-term loading and unloading easily damages the sealing surface or strips the threads. Furthermore, the manual, repeated tightening process is extremely tedious and time-consuming, resulting in very low loading and unloading efficiency for a single transmitter.

Description

Technical Field

[0001] This invention relates to the field of pressure transmitter testing technology, and in particular to a pressure transmitter pressure testing device. Background Technology

[0002] As a core sensing component in industrial automation control systems, the measurement accuracy and reliability of pressure transmitters directly affect the safe operation of production systems. Therefore, pressure transmitters need to be calibrated and their performance tested using pressure testing equipment before leaving the factory or during periodic maintenance.

[0003] In the existing pressure transmitter testing process, the connection between the transmitter and the testing platform is usually achieved by threaded fastening. First, PTFE tape is manually wrapped around the threaded interface of the pressure transmitter. Then, it is rotated into the threaded interface of the testing platform and tightened again with a wrench. This completes the installation and testing of the pressure transmitter. However, in the existing pressure transmitter testing devices, frequent rotation causes severe friction between the threads. Long-term loading and unloading can easily damage the sealing surface or strip the threads, which seriously shortens the service life of the testing equipment. Moreover, the manual wrapping of PTFE tape and repeated tightening are extremely tedious and time-consuming. The reliance on external tools such as wrenches for secondary tightening results in extremely low loading and unloading efficiency for a single transmitter, which is difficult to meet the needs of large-scale industrial continuous testing for rapid switching and efficient calibration.

[0004] To address the aforementioned technical shortcomings, a solution is proposed. Summary of the Invention

[0005] The purpose of this invention is to achieve rapid centripetal locking of the clamping plate by pushing the driven boss of the pressure-bearing sliding sleeve downwards, and to achieve high-pressure airtight connection by using the displacement difference between the inner drive tube and the fixed detection tube to cause radial expansion of the sealing rubber. The mechanical self-locking is achieved by the overtravel engagement of the limiting protrusion and the locking block. This solves the problems of existing pressure transmitter detection devices, where frequent rotation causes severe friction between the threads, and long-term loading and unloading can easily damage the sealing surface or strip the threads, seriously shortening the service life of the detection equipment. In addition, the manual wrapping of PTFE tape and repeated twisting are extremely tedious and time-consuming, and rely on external tools such as wrenches for secondary force application, resulting in extremely low loading and unloading efficiency of a single transmitter, which is difficult to meet the needs of large-scale industrial continuous testing for rapid switching and efficient calibration.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a pressure transmitter testing device, comprising a test bench and a clamping table, wherein the clamping table is fixedly installed on the top surface of the test bench, a test insertion hole is provided on the top surface of the clamping table, a rotating groove is formed on the top surface of the clamping table, a clamping plate is rotatably installed on the inner wall of the rotating groove, a driven inclined block is installed on one side surface of the clamping plate, a reset shaft is fixedly installed on one side surface of the clamping plate, a torsion spring is installed on the outer surface of the reset shaft, a lifting assembly is installed on the inner wall of the clamping table, and a testing mechanism is installed inside the clamping table;

[0007] The lifting assembly includes a guide fixing seat, which is fixedly installed on the inner wall of the clamping platform. A return spring is installed on the inner wall of the guide fixing seat. A pressure-bearing sleeve is slidably installed on the inner wall of the guide fixing seat. A buffer sealing gasket is fixedly installed on the top surface of the pressure-bearing sleeve. A driving boss is provided on the outer surface of the pressure-bearing sleeve. A test tube is slidably connected to the inner wall of the pressure-bearing sleeve. A squeezing groove is provided on the outer surface of the test tube. An inner driving tube is slidably installed on the inner wall of the test tube. A sealing rubber is fixedly installed on the top surface of the inner driving tube. A limit protrusion is provided on the outer surface of the pressure-bearing sleeve.

[0008] Furthermore, there are three rotating slots, which are arranged in a circular array and equidistantly distributed on the top surface of the clamping platform. Each rotating slot has a clamping plate distributed on its inner wall, and each clamping plate has a driven inclined block and a reset shaft distributed on one side surface. Each reset shaft has two torsion springs distributed on its outer side surface.

[0009] Furthermore, the outer surface of the pressure-bearing sleeve is in movable contact with the top surface of the return spring, the test tube is fixedly connected to the outer surface of the inner drive tube through the extrusion groove, the bottom surface of the sealing rubber is fixedly connected to the top surface of the test tube, and the bottom surface of the drive boss is in movable contact with the outer surface of the driven inclined block.

[0010] Furthermore, the testing mechanism includes a triggering component and a testing component. The triggering component includes a positioning shaft, which is fixedly installed on the inner wall of the clamping table. A trigger plate is installed on the outer surface of the positioning shaft. A setting box is fixedly installed on the bottom surface of the guide fixing seat. A locking link is slidably installed on the inner wall of the guide fixing seat. A trigger spring is installed on the outer surface of the locking link. A locking block is installed at the end of the locking link.

[0011] Furthermore, the positioning shaft is rotatably connected to the trigger plate, one end of the trigger plate extends from the inside of the clamping platform to its outside, one end of the locking link extends from the inside of the setting box to its outside, the outer surface of the locking link is in movable contact with one end of the trigger spring, and one side surface of the locking block is in movable contact with the outer surface of the limiting protrusion.

[0012] Furthermore, the test assembly includes a pressure valve, which is fixedly installed on the top surface of the test bench. A pressure gauge is fixedly installed on the top surface of the test bench. A test valve is installed on one side surface of the test bench, and a fine-tuning handwheel is installed at one end of the test valve.

[0013] Furthermore, the pressure valve and the test valve are interconnected, the pressure gauge and the test valve are interconnected, and one end of the test valve is fixedly connected to the test tube.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0015] This pressure transmitter testing device achieves rapid centripetal locking of the clamping plate by driving the boss to push the driven inclined block through the downward movement of the pressure-bearing sliding sleeve. The radial expansion of the sealing rubber, achieved by utilizing the displacement difference between the inner drive tube and the fixed detection tube, ensures a high-pressure airtight connection. Furthermore, the mechanical self-locking is achieved through the overtravel engagement of the limiting protrusion and the locking block. This addresses the shortcomings of existing pressure transmitter testing devices, where frequent rotation leads to severe friction between the threads, easily causing damage to the sealing surface or stripping of the threads during long-term loading and unloading, severely shortening the lifespan of the testing equipment. Additionally, the manual wrapping of PTFE tape and repeated tightening are extremely tedious and time-consuming, relying on external tools such as wrenches for secondary force application, resulting in extremely low loading and unloading efficiency for a single transmitter, making it difficult to meet the demands of large-scale industrial continuous testing for rapid switching and efficient calibration. Attached Figure Description

[0016] Figure 1 A schematic diagram of the overall external structure of the present invention is shown;

[0017] Figure 2 A schematic diagram of the top structure of the present invention is shown;

[0018] Figure 3 A schematic diagram of the overall internal structure of the present invention is shown;

[0019] Figure 4 A schematic diagram of the overall internal side structure of the present invention is shown;

[0020] Figure 5 A schematic diagram of the side structure of the lifting assembly of the present invention is shown;

[0021] Figure 6A schematic diagram of the internal structure of the clamping stage of the present invention is shown;

[0022] Figure 7 A schematic diagram of the internal structure of the pressure-bearing sliding sleeve of the present invention is shown;

[0023] Figure 8 A schematic diagram of the external structure of the pressure-bearing sliding sleeve of the present invention is shown;

[0024] Figure 9 This diagram shows the internal structure of the pressure-bearing sleeve of the present invention from another angle;

[0025] Figure 10 The present invention is shown. Figure 3 Enlarged schematic diagram of the structure at point A in the middle;

[0026] Figure 11 The present invention is shown. Figure 5 Enlarged schematic diagram of the structure at point B.

[0027] Legend: 1. Test stand; 101. Clamping platform; 102. Test socket; 103. Rotary groove; 104. Clamping plate; 105. Driven inclined block; 106. Reset shaft; 107. Torsion spring; 2. Guide fixing seat; 201. Pressure bearing sleeve; 202. Buffer sealing gasket; 203. Drive boss; 204. Test tube; 205. Extrusion groove; 206. Inner drive tube; 207. Sealing rubber; 208. Limiting protrusion; 209. Reset spring; 3. Positioning shaft; 301. Trigger plate; 302. Setting box; 303. Locking linkage; 304. Trigger spring; 305. Locking block; 4. Pressure valve; 401. Pressure gauge; 402. Test valve; 403. Fine adjustment handwheel. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] It should be noted that, in the description of this invention, the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0030] like Figures 1-11 As shown, a pressure transmitter testing device includes a test bench 1 and a clamping platform 101. The clamping platform 101 is fixedly installed on the top surface of the test bench 1. A test insertion hole 102 is provided on the top surface of the clamping platform 101. Three rotating grooves 103 are formed on the top surface of the clamping platform 101 in a circular array and are equidistantly distributed. A clamping plate 104 is correspondingly distributed on the inner wall of each rotating groove 103. A clamping plate 104 is rotatably installed on the inner wall of the rotating groove 103. The clamping plate 104 has a driven inclined block 105 and a reset shaft 106 distributed on one side surface of each clamping plate 104. The driven inclined block 105 is installed on one side surface of the clamping plate 104, and the reset shaft 106 is fixedly installed on one side surface of the clamping plate 104. The outer surface of the reset shaft 106 is equipped with a torsion spring 107. Two torsion springs 107 are distributed on the outer surface of each reset shaft 106. The inner wall of the clamping table 101 is equipped with a lifting assembly, and the inside of the clamping table 101 is equipped with a testing mechanism.

[0031] In this embodiment of the invention, during the descent of the pressure-bearing sleeve 201, the driving boss 203 on its outer surface descends synchronously and gradually contacts the driven inclined blocks 105 on the sides of the clamping plates 104 arranged in a ring array within the rotating groove 103. The contact between the driving boss 203 and the driven inclined blocks 105 allows the vertical downward displacement to be smoothly converted into the lateral thrust of the driven inclined blocks 105. After being subjected to force, the driven inclined blocks 105 drive the clamping plates 104, which are fixedly connected to them, to rotate around the reset shaft 106. The clamping plates 104 converge towards the center within the rotating groove 103, and their inner edges begin to fit tightly against the housing or threaded portion of the pressure transmitter. During this process, the torsion spring 107 on the outside of the reset shaft 106 is gradually twisted, storing the potential energy required for subsequent reset. The simultaneous centripetal movement of the three clamping plates 104 ensures that the pressure transmitter is firmly locked at the axial center position of the test hole.

[0032] Reference Figures 1-11Specifically, the lifting assembly includes a guide fixing seat 2, which is fixedly installed on the inner wall of the clamping platform 101. A return spring 209 is installed on the inner wall of the guide fixing seat 2, and a pressure-bearing sleeve 201 is slidably installed on the inner wall of the guide fixing seat 2. The outer surface of the pressure-bearing sleeve 201 is in active contact with the top surface of the return spring 209. A buffer sealing gasket 202 is fixedly installed on the top surface of the pressure-bearing sleeve 201. A driving boss 203 is provided on the outer surface of the pressure-bearing sleeve 201, and the bottom surface of the driving boss 203 is in contact with the outer surface of the driven inclined block 105. The inner wall of the pressure-bearing sleeve 201 is slidably connected to the test tube 204, which is fixedly connected to the outer surface of the inner drive tube 206 via a compression groove 205. The outer surface of the test tube 204 is provided with a compression groove 205. The inner drive tube 206 is slidably installed on the inner wall of the test tube 204. A sealing rubber 207 is fixedly installed on the top surface of the inner drive tube 206. The bottom surface of the sealing rubber 207 is fixedly connected to the top surface of the test tube 204. The outer surface of the pressure-bearing sleeve 201 is provided with a limit protrusion 208.

[0033] In this embodiment of the invention, the test tube 204 serves as the base of the entire test circuit, with one end fixedly connected to the test valve 402 on the test bench 1. This connection ensures that the test tube 204 remains stationary throughout the entire operating cycle and will not shift with the rise and fall of the pressure-bearing sleeve 201. Since the test tube 204 remains stationary, when the pressure transmitter is moved downwards by the pressure-bearing sleeve 201, the top end of the test tube 204 and the sealing rubber 207 mounted on its surface are actually inserted into the internal test port of the pressure transmitter. The inner drive tube 206 is located on the inner wall of the test tube 204, and... Maintaining a sliding fit with the test tube 204, the pressure-bearing sleeve 201 is connected to the inner drive tube 206 through the extrusion groove 205. This means that each downward displacement of the pressure-bearing sleeve 201 will cause the inner drive tube 206 to descend synchronously within the cavity of the test tube 204. During the downward movement of the inner drive tube 206, the sealing rubber 207 will expand, causing the middle section of the sealing rubber 207 to bulge outwards and tightly adhere to the inner wall of the test port of the pressure transmitter. This radial pressure from the inside out can completely fill the tiny gaps between the metal parts, thereby creating an airtight sealing environment inside the transmitter.

[0034] Reference Figures 1-11Specifically, the testing mechanism includes a trigger assembly and a testing assembly. The trigger assembly includes a positioning shaft 3, which is rotatably connected to a trigger plate 301. The positioning shaft 3 is fixedly installed on the inner wall of the clamping table 101. The trigger plate 301 is installed on the outer surface of the positioning shaft 3. One end of the trigger plate 301 extends from the inside of the clamping table 101 to its outside. A setting box 302 is fixedly installed on the bottom surface of the guide fixing seat 2. A locking link 303 is slidably installed on the inner wall of the guide fixing seat 2. One end of the locking link 303 extends from the inside of the setting box 302 to its outside. The outer surface of the locking link 303 is in movable contact with one end of the trigger spring 304. The trigger spring 304 is installed on the outer surface of the locking link 303. A locking block 305 is installed at the end of the locking link 303. One side surface of the locking block 305 is in movable contact with the outer surface of the limiting protrusion 208.

[0035] In this embodiment of the invention, after the test task is completed, the operator needs to manually move one end of the locking link 303 extending to the outside of the setting box 302. By applying a lateral force to the locking link 303, the resistance of the internal trigger spring 304 is overcome, and the locking block 305 is moved to the side until the locking block 305 is completely disengaged from the top of the limiting protrusion 208. At this time, the mechanical interference that restricts the lifting of the pressure-bearing slide 201 is completely released, and the return spring 209 on the inner wall of the guide fixing seat 2 instantly releases the stored compression energy, pushing the pressure-bearing slide 201 to rise quickly and reset. During the upward movement of the pressure-bearing sleeve 201, its driving boss 203 also disengages from the inclined surface of the driven wedge 105. Under the return torque provided by the reset shaft 106 and the torsion spring 107, the driven wedge 105 drives the clamping plate 104 to retract into the rotating groove 103, thus releasing the transmitter housing. At the same time, the pressure-bearing sleeve 201 drives the inner drive tube 206 to rise through the extrusion groove 205. The sealing rubber 207 loses the axial traction force from the inner drive tube 206 and quickly shrinks back to its original slender shape under the guidance of the material's own elasticity, relieving the radial compression on the inner wall of the pressure transmitter test port. Finally, the operator can easily remove the pressure transmitter from the test socket 102.

[0036] The test assembly includes a pressure valve 4, which is fixedly installed on the top surface of the test bench 1. A pressure gauge 401 is fixedly installed on the top surface of the test bench 1. A test valve 402 is installed on one side surface of the test bench 1. A fine-tuning handwheel 403 is installed at one end of the test valve 402. The pressure valve 4 and the test valve 402 are interconnected. The pressure gauge 401 and the test valve 402 are interconnected. The test valve 402 is fixedly connected to one end of the test tube 204.

[0037] Specific operating procedure: When operating this pressure transmitter testing device, the operator first places the pressure transmitter to be tested vertically, aligning its test end with the test socket 102 on the top surface of the clamping platform 101. At this time, the clamping platform 101 is maintained in an initial standby position by its internal components. As the operator applies downward pressure, the bottom end face of the pressure transmitter begins to contact and press against the buffer sealing gasket 202 located on the top surface of the pressure-bearing sleeve 201. The buffer sealing gasket 202 provides initial buffering and positioning, ensuring the smooth transmission of downward pressure. As the pressure transmitter continues to move downward, the pressure-bearing sleeve 201 overcomes the resistance of the return spring 209 on the inner wall of the guide fixing seat 2, and moves smoothly downward along the guide of the inner wall of the guide fixing seat 2. At this time, the sliding connection between the pressure-bearing sleeve 201 and the guide fixing seat 2 ensures the linear accuracy of the movement. During the descent of the pressure-bearing sleeve 201, the drive boss 203 on its outer surface descends synchronously and gradually contacts the driven wedges 105 on the sides of the clamping plates 104 arranged in a ring array within the rotating groove 103. The contact between the drive boss 203 and the driven wedges 105 allows the vertical downward displacement to be smoothly converted into a lateral thrust of the driven wedges 105. After being subjected to force, the driven wedges 105 drive the clamping plates 104, which are fixedly connected to them, to rotate around the reset shaft 106. The clamping plates 104 converge towards the center within the rotating groove 103, and their inner edges begin to fit tightly against the housing or threaded portion of the pressure transmitter. During this process, the torsion spring 107 on the outside of the reset shaft 106 is gradually twisted, storing the potential energy required for subsequent reset. The simultaneous centripetal movement of the three clamping plates 104 ensures that the pressure transmitter is firmly locked at the axial center of the test hole.

[0038] The test tube 204 serves as the base of the entire test circuit. One end of it is fixedly connected to the test valve 402 on the test bench 1. This connection ensures that the test tube 204 remains stationary throughout the entire operating cycle and will not shift with the rise and fall of the pressure-bearing sleeve 201. Because the test tube 204 remains stationary, when the pressure transmitter is moved downwards by the pressure-bearing sleeve 201, the top end of the test tube 204 and the sealing rubber 207 mounted on its surface are actually inserted into the internal test port of the pressure transmitter. The inner drive tube 206 is located on the inner wall of the test tube 204 and is connected to the test tube. The sliding fit between 204 and the pressure-bearing sleeve 201 is connected to the inner drive tube 206 through the extrusion groove 205. This means that each downward displacement of the pressure-bearing sleeve 201 will drive the inner drive tube 206 to descend synchronously in the cavity of the test tube 204. During the downward movement of the inner drive tube 206, the sealing rubber 207 will expand, causing the middle part of the sealing rubber 207 to bulge outward and tightly adhere to the inner wall of the test port of the pressure transmitter. This radial pressure from the inside out can completely fill the tiny gaps between the metal parts, thereby creating an airtight sealing environment inside the transmitter.

[0039] As the pressing depth increases, the axial tensile force on the sealing rubber 207 also increases, and the pressure of the rubber body against the surrounding inner wall also rises. Towards the end of this dynamic process, the self-locking mechanism of the device intervenes to maintain the established seal. The limiting protrusion 208 on the outer surface of the pressure-bearing sleeve 201 continues to descend with the shaft, and its side begins to contact the locking block 305 mounted on the trigger assembly inside the clamping table 101. The locking block 305 is connected to the interior of the setting box 302 via the locking link 303 and is subjected to the continuous preload of the trigger spring 304. When the limiting protrusion 208 passes the position of the locking block 305, its shape forcefully presses against the locking block 305, forcing the locking block 305 to overcome the pressure of the trigger spring 304 and causing the locking link 303 to retract into the setting box 302. When the pressure-bearing sleeve 201 reaches the bottom of its stroke, the limiting protrusion 208 completely passes the force point of the locking block 305. Under the elastic force of the trigger spring 304, the locking block 305 pops out and resets instantly. At this time, the bottom plane of the locking block 305 moves precisely above the top plane of the limiting protrusion 208, forming a solid physical barrier. When the operator feels the downward stroke reach its bottom and releases the pressure transmitter, the reset spring 209 on the inner wall of the guide fixing seat 2 attempts to release the pressure and drive the pressure-bearing sleeve 201 to reset upward. However, at this time, the pressure-bearing sleeve 201 cannot produce any upward rebound displacement because the limiting protrusion 208 is firmly blocked by the bottom of the locking block 305. This physical overtravel engagement ensures that the pressure-bearing sleeve 201 can always be kept in the lowest working position, thereby ensuring the continuous inclined surface compression of the driven boss 203 on the driven inclined block 105, keeping the clamping plate 104 locked, and also ensuring the continuous axial traction of the inner drive tube 206 on the sealing rubber 207, maintaining the radial expansion sealing state.

[0040] In this state, the internal pressure medium can smoothly enter the sensing chamber of the pressure transmitter through the internal central flow channel formed by the test valve 402, test tube 204, and internal drive tube 206 without any risk of pressure leakage. Due to the one-way locking logic of the limiting protrusion 208 and the locking block 305, the system has extremely high safety. Even if the pressure suddenly surges during pressurization, this reverse force cannot push open the physically locked pressure-bearing sleeve 201, thus ensuring that the transmitter will never be physically ejected. After the task is completed, the operator needs to manually move one end of the locking link 303 that extends to the outside of the setting box 302. By applying a lateral force to the locking link 303, the resistance of the internal trigger spring 304 is overcome, and the locking block 305 is moved to the side until the locking block 305 is completely disengaged from the top of the limiting protrusion 208. At this time, the mechanical interference that restricts the lifting of the pressure-bearing slide 201 is completely released, and the return spring 209 on the inner wall of the guide fixing seat 2 instantly releases the stored compression energy, pushing the pressure-bearing slide 201 to rise quickly and reset. During the upward movement of the pressure-bearing sleeve 201, its driving boss 203 also disengages from the inclined surface of the driven wedge 105. Under the return torque provided by the reset shaft 106 and the torsion spring 107, the driven wedge 105 drives the clamping plate 104 to retract into the rotating groove 103, thus releasing the transmitter housing. At the same time, the pressure-bearing sleeve 201 drives the inner drive tube 206 to rise through the extrusion groove 205. The sealing rubber 207 loses the axial traction force from the inner drive tube 206 and quickly shrinks back to its original slender shape under the guidance of the material's own elasticity, relieving the radial compression on the inner wall of the pressure transmitter test port. Finally, the operator can easily remove the pressure transmitter from the test socket 102.

[0041] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A pressure transmitter testing device, comprising a test bench (1) and a clamping table (101), wherein the clamping table (101) is fixedly installed on the top surface of the test bench (1), characterized in that: The top surface of the clamping platform (101) is provided with a test socket (102), the top surface of the clamping platform (101) is provided with a rotating groove (103), the inner wall of the rotating groove (103) is rotatably mounted with a clamping plate (104), a driven inclined block (105) is mounted on one side surface of the clamping plate (104), a reset shaft (106) is fixedly mounted on one side surface of the clamping plate (104), a torsion spring (107) is mounted on the outer side surface of the reset shaft (106), a lifting assembly is mounted on the inner wall of the clamping platform (101), and a test mechanism is installed inside the clamping platform (101). The lifting assembly includes a guide fixing seat (2), which is fixedly installed on the inner wall of the clamping platform (101). A return spring (209) is installed on the inner wall of the guide fixing seat (2). A pressure-bearing sleeve (201) is slidably installed on the inner wall of the guide fixing seat (2). A buffer sealing gasket (202) is fixedly installed on the top surface of the pressure-bearing sleeve (201). A driving boss (203) is provided on the outer surface of the pressure-bearing sleeve (201). A test tube (204) is slidably connected to the inner wall of the pressure-bearing sleeve (201). A squeezing groove (205) is provided on the outer surface of the test tube (204). An inner driving tube (206) is slidably installed on the inner wall of the test tube (204). A sealing rubber (207) is fixedly installed on the top surface of the inner driving tube (206). A limit protrusion (208) is provided on the outer surface of the pressure-bearing sleeve (201). The testing mechanism includes a triggering component and a testing component. The triggering component includes a positioning shaft (3), which is fixedly installed on the inner wall of the clamping table (101). A trigger plate (301) is installed on the outer surface of the positioning shaft (3). A setting box (302) is fixedly installed on the bottom surface of the guide fixing seat (2). A locking link (303) is slidably installed on the inner wall of the guide fixing seat (2). A trigger spring (304) is installed on the outer surface of the locking link (303). A locking block (305) is installed at the end of the locking link (303). The positioning shaft (3) is rotatably connected to the trigger plate (301). One end of the trigger plate (301) extends from the inside of the clamping table (101) to its outside. One end of the locking link (303) extends from the inside of the setting box (302) to its outside. The outer surface of the locking link (303) is in movable contact with one end of the trigger spring (304). One side surface of the locking block (305) is in movable contact with the outer surface of the limiting protrusion (208).

2. The pressure transmitter proof test detection device of claim 1, wherein, There are three rotating slots (103), which are arranged in a ring array and equidistantly distributed on the top surface of the clamping table (101). Each rotating slot (103) has a clamping plate (104) distributed on its inner wall. Each clamping plate (104) has a driven inclined block (105) and a reset shaft (106) distributed on one side surface. Each reset shaft (106) has two torsion springs (107) distributed on its outer side surface.

3. The pressure transmitter proof test detection device of claim 1, wherein, The outer surface of the pressure-bearing sleeve (201) is in active contact with the top surface of the return spring (209). The test tube (204) is fixedly connected to the outer surface of the inner drive tube (206) through the extrusion groove (205). The bottom surface of the sealing rubber (207) is fixedly connected to the top surface of the test tube (204). The bottom surface of the drive boss (203) is in active contact with the outer surface of the driven inclined block (105).

4. The pressure transmitter proof test detection device of claim 1, wherein, The test assembly includes a pressure valve (4), which is fixedly installed on the top surface of the test bench (1). A pressure gauge (401) is fixedly installed on the top surface of the test bench (1). A test valve (402) is installed on one side surface of the test bench (1). A fine-tuning handwheel (403) is installed at one end of the test valve (402).

5. The pressure transmitter proof test detection device of claim 4, wherein, The pressure valve (4) and the test valve (402) are interconnected, the pressure gauge (401) and the test valve (402) are interconnected, and the test valve (402) is fixedly connected to one end of the test tube (204).

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