Compressive strength detection equipment for pressure regulating valve

Abstract

The invention discloses compressive strength detection equipment for a pressure regulating valve, and belongs to the technical field of pressure regulating valve detection. Comprising a pressure generation mechanism, a pressure control and adjustment mechanism, a detection table, a pressure sensor group and a data acquisition and processing system, the pressure control and adjustment mechanism is used for controlling the stamping pressure, frequency and stroke of the pressure generation mechanism; a detection cavity is formed in the top of the detection table; the pressure sensor group is arranged at different positions in the detection cavity; a clamping mechanism is arranged in the detection cavity, and the adjusting and positioning assembly is used for adjusting the angle of the positioning body. The pressure distribution condition when the pressure regulating valve is pressed can be comprehensively monitored, the accuracy and reliability of detection data are ensured, and an accurate basis is provided for pressure regulating valve compressive strength evaluation. The adjusting rod is matched with the rack structure and the gear to achieve accurate adjustment of the angle of the positioning body, so that the arc-shaped edges on the two sides of the positioning body can make stable contact with the pressure regulating valve, the fixing stability of the pressure regulating valve is improved, and the stamping resistance of the pressure regulating valve can be accurately detected conveniently.

Description

Technical Field

[0001] The present invention relates to the technical field of pressure regulating valve detection, and more particularly to a compressive strength detection device for a pressure regulating valve. Background Art

[0002] Pressure regulating valves, as key components in numerous industrial sectors, such as petrochemicals, gas transmission, and water conservancy and hydropower, perform the crucial function of controlling and regulating fluid pressure. Their operating environments often present complex characteristics such as high pressure, high corrosion, and strong vibration. Therefore, the compressive strength of pressure regulating valves is directly related to the safety and stability of the entire fluid transportation and control system. If a pressure regulating valve's compressive strength is insufficient, it may rupture or leak under high-pressure conditions. This can not only disrupt production but also cause serious safety incidents such as fires, explosions, and poisoning, resulting in significant economic losses and casualties. Traditional methods for testing the compressive strength of pressure regulating valves often rely on manual pressure-applying devices and simple pressure sensors. These methods suffer from low accuracy, cumbersome operation, and inefficient testing. Furthermore, these devices struggle to simulate the pressure fluctuations experienced by pressure regulating valves under complex operating conditions, making it impossible to fully and accurately assess the pressure resistance of the valves. With the continuous advancement of industrial automation and intelligentization, higher requirements are being placed on the accuracy, automation, and efficiency of pressure regulating valve compressive strength testing equipment. Therefore, developing a pressure regulating valve compressive strength testing device that can achieve high precision, automation, and simulate complex working conditions has become an urgent need to ensure industrial production safety and improve production efficiency. In view of this, we propose a pressure regulating valve compressive strength testing device. Summary of the invention

[0003] The object of the present invention is to provide a compressive strength testing device for a pressure regulating valve to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions: A compressive strength testing device for a pressure regulating valve, comprising a pressure generating mechanism, a pressure control and regulating mechanism, a testing platform, a pressure sensor group, and a data acquisition and processing system; The pressure generating mechanism is used to apply pressure to the pressure regulating valve to be tested, and the pressure control and regulation mechanism is used to control the stamping pressure, frequency and stroke of the pressure generating mechanism; A detection cavity is set on the top of the detection table, and pressure sensor groups are set at different positions in the detection cavity to fully monitor the pressure distribution in the detection cavity; The data acquisition and processing system includes a data acquisition card, an industrial computer and a display module. The data acquisition card is used to collect data from the pressure sensor group, the industrial computer is used to analyze and process the collected data, and the display module is used to display the pressure data and test results during the test process. A clamping mechanism is provided in the detection cavity, which includes two relatively arranged moving blocks, which slide with the detection table, and fixed frames are provided on both sides of the moving blocks. A positioning body is provided on the inner side of the fixed frame, and the positioning body is rotatably connected to the fixed frame. An installation cavity is provided on the fixed frame, and an adjustment positioning component is provided in the installation cavity. The adjustment positioning component is used to adjust the angle of the positioning body.

[0005] Preferably, the adjustment and positioning assembly includes a rack structure and an adjustment rod, the rack structure includes a first rack and a second rack, the first rack and the second rack form a step-shaped structure, the second rack is located on the top surface of the first rack, and a second gear is provided at the lower end of the adjustment rod, and the second gear is engaged with the second rack; Connecting shafts are provided at both ends of the positioning body, the connecting shafts are rotatably connected to the fixing frame, a first gear is sleeved on the connecting shaft at the upper end, and the first gear is meshed with the first rack.

[0006] Preferably, the adjusting rod is rotatably connected to the fixing frame, the upper end of the adjusting rod is connected to an adjusting handwheel, the adjusting rod is provided with a limiting cylinder at the lower end of the adjusting handwheel, and the limiting cylinder is threadedly connected to the adjusting rod; A threaded portion is provided on the outer wall of the lower end of the limiting cylinder, and a threaded hole is provided on the top surface of the fixing frame. The threaded portion can be threadedly connected with the threaded hole.

[0007] Preferably, the fixing frame includes two fixing plates arranged opposite to each other, the connecting shaft is rotatably connected to the fixing plates, the threaded hole is located on the upper fixing plate, and the upper end of the adjusting rod extends above the upper fixing plate.

[0008] Preferably, a slide groove is provided on the testing platform, the moving block is slidably matched with the slide groove, and a driving assembly is provided at the bottom of the testing platform, and the driving assembly is connected to the moving block.

[0009] Preferably, the driving assembly includes a motor and a threaded rod, the threaded rod is provided with two threaded parts with opposite thread directions, mounting plates are provided on both sides of the bottom surface of the detection table, the threaded rod is rotatably connected to the mounting plates, and the threaded rod is threadedly matched with the moving block.

[0010] Preferably, the pressure generating mechanism includes a hydraulic pump station, a hydraulic cylinder, a hydraulic pipeline and a punching head. The hydraulic pump station is connected to the hydraulic cylinder through a hydraulic pipeline to provide hydraulic power for the hydraulic cylinder; the piston rod of the hydraulic cylinder is fixedly connected to the punching head, and the piston rod is hydraulically driven to drive the punching head to perform reciprocating linear punching motion.

[0011] Preferably, the pressure sensor group includes multiple high-precision pressure sensors with different ranges, some of which are integrated in the contact end between the punching head and the pressure regulating valve for directly measuring the punching pressure, and the remaining pressure sensors are distributed in the pressure-bearing area of the detection chamber and around the pressure regulating valve for monitoring pressure transmission and distribution.

[0012] Preferably, it further includes a simulated working condition assisting mechanism, which includes a vibration generating device and a temperature regulating device. The vibration generating device is arranged below the testing table and is used to simulate the vibration environment in the actual working condition; the temperature regulating device is arranged in the testing cavity and is used to simulate the temperature change in the actual working condition, so as to realize a more realistic compressive strength detection environment for the pressure regulating valve.

[0013] Preferably, the positioning body includes an arc portion and an installation portion. Arc-shaped edges in contact with the pressure regulating valve are arranged at both ends of the arc portion. A groove is formed in the middle of the arc portion. A connecting block is arranged on the installation portion, and the connecting block is slidably matched with the groove. A plurality of springs are arranged in the groove, and the springs are connected to the connecting block; Two auxiliary limiting blocks are further arranged on the outer side of the arc portion, and a limiting groove is formed on the installation portion, and the auxiliary limiting blocks are slidably matched with the limiting groove.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) The pressure generating mechanism of the present invention provides a stable pressure output through components such as a hydraulic pump station and a hydraulic cylinder. The PLC controller in the pressure control and regulating mechanism combines with the pressure feedback unit to accurately regulate the stamping pressure, frequency and stroke. The pressure sensor group is distributed at different positions in the testing cavity, covering the contact end of the stamping head and the peripheral area of the pressure regulating valve, and can comprehensively monitor the pressure distribution, ensuring the accuracy and reliability of the detection data, and providing an accurate basis for the evaluation of the compressive strength of the pressure regulating valve. The adjusting rod realizes the precise adjustment of the angle of the positioning body through the cooperation with the rack structure and the gear, so that the arc-shaped edges on both sides of the positioning body can be stably in contact with the pressure regulating valve, improving the stability of the fixation of the pressure regulating valve and facilitating the accurate detection of the anti-stamping ability of the pressure regulating valve; moreover, the setting of the adjusting handwheel and the limiting cylinder makes the adjustment operation convenient and fast, and can effectively prevent the adjusting rod from rotating automatically after the adjustment is completed, ensuring the stability of the angle of the positioning body. The angle of each positioning body can be adjusted independently. When the pressure regulating valve has an irregular structure, it can improve the fitting ability to the irregular shape, ensure the clamping stability and uniform force during the detection process, and make the device have a wider application range.

[0015] (2) The arc portion and the installation portion of the positioning body of the present invention form a telescopic structure through springs, connecting blocks and grooves, and can be adaptively adjusted according to the contour of the pressure regulating valve when clamping the pressure regulating valve. The elastic force of the spring can buffer the clamping force and avoid damage such as indentation and scratching on the surface of the pressure regulating valve, which is especially suitable for pressure regulating valves with high surface precision requirements or soft materials, effectively protecting the product to be tested and reducing the loss during the detection process. The cooperation between the auxiliary limiting block and the limiting groove provides guidance and restraint for the relative sliding of the arc portion and the installation portion, and prevents the components from shifting or shaking during the telescopic process. Even when the equipment is vibrated or the pressure fluctuates during the detection process, this limiting structure can ensure that the positioning body always maintains a stable clamping state, avoiding the influence of the loosening of the pressure regulating valve on the accuracy of the detection result.

[0016] (3) The vibration generating device and temperature regulating device of the simulation working condition auxiliary mechanism of the present invention can simulate the vibration and temperature change environment in the actual working condition. The vibration generating device can adjust the vibration frequency and amplitude, and the temperature regulating device can accurately control the temperature in the detection cavity, creating an environment closer to the actual use scenario for the compressive strength detection of the pressure regulating valve, making the detection result more valuable and practical. Description of the Drawings

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the top surface structure of the detection table of the present invention; Figure 3 It is a schematic diagram of the bottom structure of the detection table of the present invention; Figure 4 It is a partial sectional schematic diagram of the clamping mechanism of the present invention; Figure 5 It is a schematic diagram of the connection of the rack structure of the present invention; Figure 6 It is a schematic diagram of the positioning body structure of the present invention; Figure 7 It is a schematic diagram of the adjusting rod and the threaded hole of the present invention.

[0018] Explanation of the reference numerals in the drawings: 1. Detection table; 101. Detection cavity; 102. Slide groove; 2. Pressure generating mechanism; 3. Clamping mechanism; 301. Moving block; 302. Fixed frame; 303. Positioning body; 304. Rack structure; 305. Adjusting rod; 306. Connecting shaft; 307. First gear; 308. Second gear; 309. Limiting cylinder; 310. Threaded hole; 311. Groove; 312. Connecting block; 313. Spring; 314. Auxiliary limiting block; 315. Limiting groove; 4. Threaded rod. Detailed Description of the Invention

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0020] Embodiment: Please refer to Figure 1-7 , a compressive strength detection device for a pressure regulating valve, including a pressure generating mechanism 2, a pressure control and regulating mechanism, a detection table 1, a pressure sensor group, and a data acquisition and processing system; The pressure generating mechanism 2 is used to apply pressure to the pressure regulating valve to be tested. The pressure control and regulation mechanism is used to control the stamping pressure, frequency, and stroke of the pressure generating mechanism 2. The pressure generating mechanism provides a stable pressure output through components such as a hydraulic pump station and a hydraulic cylinder. The PLC controller in the pressure control and regulation mechanism, combined with the pressure feedback unit, can precisely adjust the stamping pressure, frequency, and stroke. The pressure sensor group is distributed at different positions in the detection chamber, covering the contact end of the stamping head and the peripheral area of the pressure regulating valve, which can comprehensively monitor the pressure distribution, ensure the accuracy and reliability of the detection data, and provide an accurate basis for evaluating the compressive strength of the pressure regulating valve.

[0021] A detection chamber 101 is provided at the top of the detection table 1. The pressure regulating valve to be tested is fixed in the detection chamber 101. The pressure sensor group is arranged at different positions in the detection chamber 101 for comprehensively monitoring the pressure distribution in the detection chamber 101. The data acquisition and processing system includes a data acquisition card, an industrial control computer, and a display module. The data acquisition card is used to acquire the data of the pressure sensor group. The industrial control computer is used to analyze and process the acquired data. The display module is used to display the pressure data and detection results during the detection process. A clamping mechanism 3 is arranged in the detection chamber 101. The clamping mechanism 3 includes two relatively arranged moving blocks 301. The moving blocks 301 are slidably matched with the detection table 1. Fixed frames 302 are arranged on both sides of the moving blocks 301. Positioning bodies 303 are arranged inside the fixed frames 302. The positioning bodies 303 are rotatably connected to the fixed frames 302. An installation cavity is formed in the fixed frames 302, and an adjustment and positioning component is arranged in the installation cavity. The adjustment and positioning component is used to adjust the angle of the positioning bodies 303 so that the arc-shaped edges on both sides of the positioning bodies 303 can contact the pressure regulating valve, improving the stability of fixing the pressure regulating valve and facilitating the accurate detection of the anti-stamping ability of the pressure regulating valve. An angle scale is arranged on the top surface of the positioning body 303 to facilitate rotating the four positioning bodies 303 by the same angle. The number of the adjustment and positioning components is corresponding to the number of the positioning bodies 303, and the angle of each positioning body 303 can also be adjusted individually. When the pressure regulating valve has an irregular structure, the fitting ability to the irregular shape can be improved, ensuring the clamping stability and uniform force during the detection process, and making the device have a wider application range.

[0022] In the present application, the adjustment and positioning assembly includes a rack structure 304 and an adjustment rod 305. A linear groove matching the rack structure 304 is opened in the fixed frame 302 so that the rack structure 304 and the fixed frame 302 can slide together. The rack structure 304 includes a first rack and a second rack. The first rack and the second rack form a step-like structure. The second rack is located on the top surface of the first rack. A second gear 308 is provided at the lower end of the adjustment rod 305. The second gear 308 is engaged with the second rack. When the second gear 308 rotates, it pushes the first rack to move linearly; connecting shafts 306 are provided at both ends of the positioning body 303. The connecting shaft 306 is rotatably connected to the fixed frame 302. A first gear 307 is sleeved on the connecting shaft 306 at the upper end. The first gear 307 is engaged with the first rack. When the first gear 307 moves linearly, it can drive the first gear 307 to rotate. By rotating the adjustment rod 305, the second gear 308 rotates, which in turn drives the rack structure 304 to move linearly. The movement of the rack structure 304 drives the first gear 307 to rotate. Under the action of the first gear 307, the positioning body 303 rotates about the central axis of the connecting shaft 306, thereby adjusting the angle of the positioning body 303. Furthermore, by cooperating between the second gear 308 and the second rack, and the first gear 307 and the first rack, and by having a smaller diameter than the first gear 307, the positioning body's angle can be precisely adjusted, allowing the positioning body to be adjusted to a suitable angle and fit closely with the pressure regulating valve. This greatly enhances the device's adaptability to different models of pressure regulating valves, improving the device's versatility and practicality.

[0023] In the present application, the adjusting rod 305 is rotatably connected to the fixing frame 302. The upper end of the adjusting rod 305 is connected to an adjusting handwheel. The adjusting rod 305 is provided with a limiting cylinder 309 at the lower end of the adjusting handwheel. The limiting cylinder 309 is threadedly connected to the adjusting rod 305. The outer wall of the lower end of the limiting cylinder 309 is provided with a threaded portion. The top surface of the fixing frame 302 is provided with a threaded hole 310. The threaded portion can be threadedly connected to the threaded hole 310. When the limiting cylinder 309 is not in contact with the threaded hole 310, the adjusting rod 305 can be rotated. When the adjusting rod 305 does not need to be rotated, the limiting cylinder 309 is rotated to move it downward. The threaded portion at the lower end of the limiting cylinder 309 will extend into the threaded hole 310. Then, the threaded portion and the threaded hole 310 are threadedly connected, thereby locking and fixing the adjusting rod 305 and preventing the adjusting rod 305 from rotating.

[0024] In the present application, the fixing frame 302 includes two opposing fixing plates, with a connecting shaft 306 rotatably connected to the fixing plates. A threaded hole 310 is located on the upper fixing plate. The upper end of the adjustment rod 305 extends through the middle of the threaded hole 310 to above the upper fixing plate, with a gap between the adjustment rod 305 and the threaded hole 310. The lower end of the adjustment rod 305, the second gear 308, the rack structure 304, and the first gear 307 are all mounted within the upper fixing plate.

[0025] In this application, a slide groove 102 is provided on the detection platform 1, and the moving block 301 slides with the slide groove 102. The slide groove 102 limits the moving trajectory of the moving block 301. A driving component is provided at the bottom of the detection platform 1, and the driving component is connected to the moving block 301. The driving component is used to push the two moving blocks 301 to slide relative to each other along the slide groove 102, thereby clamping the pressure regulating valve.

[0026] In this application, the drive assembly includes a motor and a threaded rod 4. The threaded rod 4 is provided with two threaded sections with opposite thread directions. Mounting plates are provided on both sides of the bottom surface of the test platform 1. The threaded rod 4 is rotatably connected to the mounting plates. The threaded rod 4 is threadedly engaged with the moving block 301. The motor drives the threaded rod 4 to rotate, causing the moving block 301, which is threadedly connected to the threaded rod 4, to move linearly along the threaded rod.

[0027] In a possible embodiment, a cylinder may be provided outside the moving block 301 to push the moving block 301 to move. The two cylinders need to be connected through a control system and started and shut down at the same time.

[0028] In this application, the pressure generating mechanism 2 includes a hydraulic pump station, a hydraulic cylinder, a hydraulic pipeline and a punching head. The hydraulic pump station is connected to the hydraulic cylinder through a hydraulic pipeline to provide hydraulic power for the hydraulic cylinder; the piston rod of the hydraulic cylinder is fixedly connected to the punching head, and the piston rod is hydraulically driven to drive the punching head to perform reciprocating linear punching motion, thereby applying pressure to the pressure regulating valve.

[0029] In this application, the pressure sensor group includes multiple high-precision pressure sensors with different ranges, some of which are integrated in the contact end between the punch head and the pressure regulating valve for directly measuring the punching pressure, and the remaining pressure sensors are distributed in the pressure-bearing area of the detection cavity 101 and around the pressure regulating valve for monitoring pressure transmission and distribution.

[0030] In this application, the pressure control and regulation mechanism includes a proportional relief valve, a flow control valve, a PLC controller and a pressure feedback unit. The PLC controller controls the output pressure of the hydraulic pump station by adjusting the proportional relief valve according to the preset stamping parameters and the data of the pressure feedback unit, and controls the hydraulic oil flow by adjusting the flow control valve, thereby controlling the stamping pressure, frequency and stroke of the stamping head.

[0031] In a possible embodiment, it further includes a simulated working condition assisting mechanism. The simulated working condition assisting mechanism includes a vibration generating device and a temperature regulating device. The vibration generating device is arranged below the test bench 1 and is used to simulate the vibration environment in the actual working condition; the temperature regulating device is arranged in the detection cavity 101 and is used to simulate the temperature change in the actual working condition to achieve a more realistic detection environment for the compressive strength of the pressure regulating valve. Among them, the vibration generating device includes an electromagnetic vibrator and a vibration frequency regulator. The electromagnetic vibrator is fixedly connected to the bottom of the test bench 1, and the vibration frequency regulator is used to adjust the vibration frequency and amplitude of the electromagnetic vibrator to simulate the vibration states under different working conditions. The temperature regulating device includes a heating wire, a refrigeration sheet and a temperature controller. The heating wire and the refrigeration sheet are distributed on the cavity wall surface of the test bench 1. The temperature controller realizes the precise adjustment and stable control of the temperature in the cavity of the test bench 1 by controlling the working states of the heating wire and the refrigeration sheet according to the preset temperature parameters. The vibration generating device and the temperature regulating device of the simulated working condition assisting mechanism can simulate the vibration and temperature change environments in the actual working condition. The vibration generating device can adjust the vibration frequency and amplitude, and the temperature regulating device can precisely control the temperature in the detection cavity, creating an environment closer to the actual use scenario for the compressive strength detection of the pressure regulating valve, making the detection result more valuable for reference and practical significance.

[0032] As Figure 6 shown, in this application, the positioning body 303 includes an arc portion and an installation portion. Arc-shaped edges in contact with the pressure regulating valve are provided at both ends of the arc portion. The two ends of the arc portion are the surfaces in contact with the pressure regulating valve. A groove 311 is formed in the middle of the arc portion. A connecting block 312 is arranged on the installation portion. The connecting block 312 is slidably matched with the groove 311. A plurality of springs 313 are arranged in the groove 311. The springs 313 are connected to the connecting block 312. Through the settings of the springs 313, the connecting block 312 and the groove 311, the arc portion and the installation portion can be telescopic, and under the elastic force of the springs 313, it can prevent the positioning body 303 from clamping the surface of the pressure regulating valve excessively, and can also make the positioning body 303 in close contact with the pressure regulating valve. The elastic force of the springs 313 makes the arc-shaped edges of the positioning body 303 fit tightly with the pressure regulating valve, eliminating the gap between the two and ensuring uniform transmission of pressure to the surface of the pressure regulating valve. This close contact can avoid detection errors caused by uneven local stress, making the data collected by the pressure sensor more truly reflect the compressive performance of the pressure regulating valve, thereby improving the overall detection accuracy.

[0033] Two auxiliary limit blocks 314 are further arranged on the outside of the arc portion. A limit groove 315 is formed on the installation portion. The auxiliary limit blocks 314 are slidably matched with the limit groove 315. Through the cooperation of the auxiliary limit blocks 314 and the limit groove 315, the movement between the arc portion and the installation portion is more stable.

[0034] In the present invention, the clamping mechanism and the positioning body are designed with modular components. Components such as springs, connection blocks, and auxiliary limit blocks are easy to disassemble and replace. When wear or damage occurs after long-term use, local repair can be quickly carried out without replacing the entire clamping mechanism, reducing the maintenance cost and downtime of the equipment, and improving the usage efficiency and economy of the equipment.

[0035] In a possible embodiment, a micro servo motor is provided for each of the four adjusting rods 305. Each servo motor is connected to the corresponding adjusting rod 305 through a coupling. A central controller is provided, and this controller is connected to the four servo motors through data lines for sending control instructions. At the same time, control buttons are provided on the equipment operation panel to facilitate operations such as starting, stopping, and speed adjustment by the operator. After the operator inputs a rotation instruction and angle parameters on the operation panel, the central controller converts the instruction into an electrical signal and sends it to the four servo motors simultaneously. After receiving the signal, the servo motors rotate synchronously according to the preset parameters, drive the adjusting rods 305 to rotate through the couplings, and achieve synchronous angle adjustment of the four positioning bodies 303 to adapt to pressure regulating valves of different sizes. The servo motors have high-precision rotational speed and angle control capabilities, can precisely control the rotation of the adjusting rods 305, and can be monitored and adjusted in real time through the central controller to ensure the rotational consistency of the four adjusting rods 305.

[0036] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A compressive strength detection device for a pressure regulating valve, characterized in that, It includes a pressure generating mechanism (2), a pressure control and regulation mechanism, a test bench (1), a pressure sensor group, and a data acquisition and processing system; The pressure generating mechanism (2) is used to apply pressure to the pressure regulating valve to be tested, and the pressure control and regulation mechanism is used to control the stamping pressure, frequency, and stroke of the pressure generating mechanism (2); A test cavity (101) is provided at the top of the test bench (1), and the pressure sensor group is arranged at different positions within the test cavity (101) for comprehensively monitoring the pressure distribution within the test cavity (101); The data acquisition and processing system includes a data acquisition card, an industrial control computer, and a display module. The data acquisition card is used to acquire data from the pressure sensor group, the industrial control computer is used to analyze and process the acquired data, and the display module is used to display the pressure data and test results during the test process; A clamping mechanism (3) is arranged within the test cavity (101). The clamping mechanism (3) includes two relatively arranged moving blocks (301). The moving blocks (301) are in sliding fit with the test bench (1). Fixed frames (302) are arranged on both sides of the moving blocks (301). Positioning bodies (303) are arranged on the inner sides of the fixed frames (302). The positioning bodies (303) are rotatably connected to the fixed frames (302). Installation cavities are formed on the fixed frames (302), and adjustment and positioning components are arranged within the installation cavities for adjusting the angles of the positioning bodies (303); The positioning body (303) includes an arc portion and an installation portion, and arc-shaped edges for contacting the pressure regulating valve are arranged at both ends of the arc portion.

2. The compressive strength detection device for a pressure regulating valve according to claim 1, wherein: The adjustment and positioning component includes a rack structure (304) and an adjustment rod (305). The rack structure (304) includes a first rack and a second rack. The first rack and the second rack form a stepped structure. The second rack is located on the top surface of the first rack. A second gear (308) is arranged at the lower end of the adjustment rod (305), and the second gear (308) meshes with the second rack; Connection shafts (306) are arranged at both ends of the positioning body (303). The connection shafts (306) are rotatably connected to the fixed frames (302). A first gear (307) is sleeved on the connection shaft (306) at the upper end, and the first gear (307) meshes with the first rack.

3. The compressive strength detection device for a pressure regulating valve according to claim 2, wherein: The adjustment rod (305) is rotatably connected to the fixed frame (302). An adjustment handwheel is connected to the upper end of the adjustment rod (305). A limiting cylinder (309) is arranged at the lower end of the adjustment rod (305) below the adjustment handwheel. The limiting cylinder (309) is threadedly connected to the adjustment rod (305); A threaded portion is arranged on the outer wall of the lower end of the limiting cylinder (309), and a threaded hole (310) is formed on the top surface of the fixed frame (302). The threaded portion can be threadedly connected to the threaded hole (310).

4. The compressive strength detection device for a pressure regulating valve according to claim 3, characterized in that: The fixed frame (302) includes two relatively arranged fixing plates. The connection shafts (306) are rotatably connected to the fixing plates. The threaded hole (310) is located on the upper fixing plate, and the upper end of the adjustment rod (305) extends above the upper fixing plate.

5. The compressive strength detection device for a pressure regulating valve according to claim 1, wherein: A chute (102) is formed in the inspection table (1), the moving block (301) is slidably engaged with the chute (102), and a driving assembly is arranged at the bottom of the inspection table (1), and the driving assembly is connected to the moving block (301).

6. The compressive strength detection device for a pressure regulating valve according to claim 5, wherein: The driving assembly includes a motor and a threaded rod (4). Two threaded portions with opposite thread directions are provided on the threaded rod (4). Mounting plates are arranged on both sides of the bottom surface of the inspection table (1). The threaded rod (4) is rotatably connected to the mounting plates, and the threaded rod (4) is in threaded cooperation with the moving block (301).

7. A compressive strength detection device for a pressure regulating valve according to claim 1, characterized in that: The pressure generating mechanism (2) includes a hydraulic pump station, a hydraulic cylinder, a hydraulic pipeline and a punching head. The hydraulic pump station is connected to the hydraulic cylinder through the hydraulic pipeline to provide hydraulic power for the hydraulic cylinder; the piston rod of the hydraulic cylinder is fixedly connected to the punching head, and the piston rod is driven by hydraulic pressure to drive the punching head to perform reciprocating linear punching motion.

8. The compressive strength detection device for a pressure regulating valve according to claim 7, wherein: The pressure sensor group includes a plurality of high-precision pressure sensors with different ranges. Some of the pressure sensors are integrated at the contact end of the punching head and the pressure regulating valve to directly measure the punching pressure, and the remaining pressure sensors are distributed in the pressure-bearing area of the inspection cavity (101) and around the pressure regulating valve to monitor the pressure transmission and distribution conditions.

9. The compressive strength detection device for a pressure regulating valve according to claim 8, wherein: It further includes a simulated working condition auxiliary mechanism. The simulated working condition auxiliary mechanism includes a vibration generating device and a temperature regulating device. The vibration generating device is arranged below the inspection table (1) to simulate the vibration environment in the actual working condition; the temperature regulating device is arranged in the inspection cavity (101) to simulate the temperature change in the actual working condition, so as to realize a more realistic detection environment for the compressive strength of the pressure regulating valve.

10. A compressive strength testing device for a pressure regulating valve according to claim 1, characterized in that: A groove (311) is formed in the middle of the arc portion, a connecting block (312) is arranged on the mounting portion, the connecting block (312) is slidably engaged with the groove (311), a plurality of springs (313) are arranged in the groove (311), and the springs (313) are connected to the connecting block (312); Two auxiliary limiting blocks (314) are further arranged on the outer side of the arc portion, a limiting groove (315) is formed in the mounting portion, and the auxiliary limiting blocks (314) are slidably engaged with the limiting groove (315).

Images