A sealing detection device for safety valve production

Abstract

The utility model discloses a kind of sealing detection devices for safety valve production, belong to safety valve production technical field, its technical scheme main points include base, the top of base is provided with detection mechanism and fixed assembly, the detection mechanism includes support frame and sealing joint, the top of sealing joint is connected with external pipe, the left side of sealing joint is fixedly connected with pressure detector, the right side of sealing joint is fixedly connected with flow detector, solve the safety valve sealing detection device in existing detection process usually relies on artificial observation pressure gauge, artificial observation cannot capture subtle change in pressure in real time, detection precision is insufficient, and visual fatigue is easily generated, and existing detection device usually lacks the flow monitoring of leakage medium, only by pressure change judges sealing property, cannot accurately quantify leakage degree, it is not conducive to subsequent product quality analysis and improvement problem.

Description

Technical Field

[0001] This utility model relates to the field of safety valve manufacturing technology, and in particular to a sealing performance testing device for safety valve manufacturing. Background Technology

[0002] A safety valve is an automatic valve used to prevent the pressure inside equipment or pipeline from exceeding the specified value and to ensure the safe operation of the system. It is widely used in industries such as petroleum, chemical, power, and metallurgy. During the production process of safety valves, sealing performance is one of its core performance indicators. If the sealing performance of a safety valve does not meet the standards, it will lead to media leakage, which will not only affect the normal operation of the equipment, but may also cause safety accidents. Therefore, a strict sealing performance test must be performed on the safety valve before it leaves the factory.

[0003] Existing testing devices are not convenient for clamping and injecting water into safety valves of different specifications, and their application range is not wide enough.

[0004] Existing patent (publication number: CN223192479U) discloses a safety valve sealing performance testing device, including a base, a clamping mechanism, and a water injection mechanism. The base sidewall is provided with a first adjusting mechanism for adjusting the movement of the clamping mechanism and a second adjusting mechanism for adjusting the movement of the water injection mechanism. The clamping mechanism clamps the safety valve, and the water injection mechanism injects water into the safety valve. This utility model achieves bidirectional approach by adjusting the clamping mechanism to move the safety valve closer to the water injection mechanism through the first adjusting mechanism and adjusting the water injection mechanism to move closer to the safety valve through the second adjusting mechanism. It is suitable for water injection of safety valves of different lengths. By adjusting the knob in conjunction with the threaded hole on the sidewall of the channel steel, rotating the adjusting knob causes the pressure plate to press the safety valve. Water is injected into the safety valve from the water injection head through the water supply pipe. The water supply pipe can be supplied by a water pump. The height of the water injection head can be adjusted by the setting of the electric telescopic rod to adapt to safety valves of different heights.

[0005] To address the aforementioned issues, existing patents offer solutions. However, existing safety valve sealing testing devices typically rely on manual observation of pressure gauges during the testing process. Manual observation cannot capture subtle pressure changes in real time, resulting in insufficient testing accuracy and easy visual fatigue. Furthermore, existing testing devices often lack flow monitoring of the leaking medium, relying solely on pressure changes to determine sealing performance, which cannot accurately quantify the degree of leakage and is detrimental to subsequent product quality analysis and improvement.

[0006] Therefore, a sealing performance testing device for safety valve production is proposed. Utility Model Content

[0007] The purpose of this invention is to provide a sealing performance testing device for safety valve production, which can solve the problems of existing safety valve sealing performance testing devices that usually rely on manual observation of pressure gauges during the testing process. Manual observation cannot capture subtle pressure changes in real time, resulting in insufficient detection accuracy and easy visual fatigue. Furthermore, existing testing devices usually lack flow monitoring of the leaking medium and judge sealing performance only by pressure changes, which cannot accurately quantify the degree of leakage and is not conducive to subsequent product quality analysis and improvement.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a sealing performance testing device for safety valve production, comprising a base, wherein a testing mechanism and a fixing component are provided on the top of the base;

[0009] The detection mechanism includes a support frame and a sealing joint. An external pipe is connected to the top of the sealing joint. A pressure detector is fixedly connected to the left side of the sealing joint, and a flow detector is fixedly connected to the right side of the sealing joint. The detection heads of both the pressure detector and the flow detector penetrate into the sealing joint. A docking drive assembly is provided at the top of the sealing joint, and a docking adjustment assembly is provided at the bottom of the support frame. A PLC controller that works with the pressure detector, the flow detector, the docking drive assembly, and the docking adjustment assembly is fixedly connected to the rear right side of the support frame. A buzzer alarm is fixedly connected to the top of the PLC controller.

[0010] Preferably, the fixing component includes a U-shaped frame, which is fixedly connected to the front side of the top of the base. Clamping cylinders are fixedly connected to both sides of the U-shaped frame, and the output rods of the two clamping cylinders pass through the inner side of the U-shaped frame and are fixedly connected to a fixing clamp.

[0011] Preferably, a first rubber pad is fixedly connected to the bottom of the inner side of the U-shaped frame, and a second rubber pad is fixedly connected to the opposite side of each of the two fixing plates.

[0012] Preferably, both sides of the U-shaped frame are provided with through holes for use with two clamping cylinders, and the output rod surface of the clamping cylinder is slidably connected to the inner wall of the through hole.

[0013] Preferably, the docking drive assembly includes a lifting cylinder, which is fixedly connected to the front side of the top of the support frame. The output rod of the lifting cylinder passes through the support frame and is fixedly connected to a transmission block. The transmission block is sleeved on the top of the sealing joint surface, and the inner wall of the transmission block is fixedly connected to the top of the sealing joint surface.

[0014] Preferably, a limiting guide rod is fixedly connected to the rear side of the top of the transmission block, and the top of the limiting guide rod extends through to the top of the support frame.

[0015] Preferably, the docking adjustment assembly includes two longitudinal guide rails, which are fixedly connected to the two sides of the rear top of the base, and longitudinal electric slides are slidably connected to the surfaces of the two longitudinal guide rails.

[0016] Preferably, a transverse guide rail is fixedly connected between the two longitudinal electric slides, and the transverse electric slide is slidably connected to the surface of the transverse guide rail. The top of the transverse electric slide is fixedly connected to the bottom of the support frame.

[0017] Preferably, the front side of the top of the support frame has a through hole for use with the lifting cylinder, and the surface of the output rod of the lifting cylinder is slidably connected to the inner wall of the through hole.

[0018] Preferably, the top of the inner side of the support frame is provided with a sliding hole for use with the limiting guide rod, and the surface of the limiting guide rod is slidably connected to the inner wall of the sliding hole.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] 1. By setting up a testing institution, this application can accurately capture pressure and flow rate changes during the safety valve sealing test process in real time through integrated pressure and flow detection functions. This avoids the errors and visual fatigue problems of traditional manual observation of pressure gauges. At the same time, it can automatically collect, analyze, and alarm abnormalities, reducing manual intervention and improving testing efficiency and accuracy.

[0021] 2. This application, through the setting of the fixing component, can quickly and firmly clamp and fix the safety valve to be tested, and prevent the safety valve from shifting during the testing process. Attached Figure Description

[0022] Figure 1 This is an overall structural diagram of the sealing performance testing device for safety valve production according to this utility model.

[0023] Figure 2 This is a structural diagram of the detection mechanism in this utility model;

[0024] Figure 3 This is an exploded structural diagram of the fixing component in this utility model;

[0025] Figure 4 This is an exploded structural diagram of the docking drive assembly and the support frame in this utility model;

[0026] Figure 5 This is a structural diagram of the docking adjustment component in this utility model.

[0027] In the diagram: 1. Base; 2. Detection mechanism; 21. Support frame; 22. Sealing joint; 23. External pipe; 24. Pressure detector; 25. Flow detector; 26. Docking drive assembly; 261. Lifting cylinder; 262. Transmission block; 263. Limiting guide rod; 27. Docking adjustment assembly; 271. Longitudinal guide rail; 272. Longitudinal electric slide; 273. Transverse guide rail; 274. Transverse electric slide; 28. PLC controller; 29. ​​Buzzer alarm; 3. Fixing assembly; 31. U-shaped frame; 32. Clamping cylinder; 33. Fixing clamp; 34. First rubber pad; 35. Second rubber pad; 4. Through hole; 5. Perforation; 6. Sliding hole. Detailed Implementation

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

[0029] Please see Figure 1-5 The present invention provides the following technical solution:

[0030] A sealing performance testing device for safety valve production includes a base 1, with a testing mechanism 2 and a fixing component 3 disposed on the top of the base 1;

[0031] The testing mechanism 2 includes a support frame 21 and a sealing joint 22. An external pipe 23 is connected to the top of the sealing joint 22. A pressure detector 24 is fixedly connected to the left side of the sealing joint 22, and a flow detector 25 is fixedly connected to the right side of the sealing joint 22. The detection heads of the pressure detector 24 and the flow detector 25 both penetrate into the sealing joint 22. A docking drive assembly 26 is provided at the top of the sealing joint 22, and a docking adjustment assembly 27 is provided at the bottom of the support frame 21. A PLC controller 28, which works with the pressure detector 24, the flow detector 25, the docking drive assembly 26, and the docking adjustment assembly 27, is fixedly connected to the rear right side of the support frame 21. A buzzer alarm 29 is fixedly connected to the top of the PLC controller 28.

[0032] In this embodiment: by setting up a base 1, a detection mechanism 2, and a fixing component 3, the base 1 provides a supporting foundation for the entire device during use. The detection mechanism 2 integrates pressure and flow detection functions, enabling real-time and accurate capture of pressure and medium flow changes during the safety valve sealing test process. This avoids the errors and visual fatigue associated with traditional manual observation of pressure gauges. It also automatically collects, analyzes, and alarms for abnormalities, reducing manual intervention and improving detection efficiency and accuracy. The fixing component 3 quickly and securely clamps and fixes the safety valve to be tested, preventing displacement of the safety valve during the test process.

[0033] Specifically, such as Figure 1 , Figure 3 As shown, the fixing component 3 includes a U-shaped frame 31, which is fixedly connected to the front side of the top of the base 1. Clamping cylinders 32 are fixedly connected to both sides of the U-shaped frame 31. The output rods of the two clamping cylinders 32 pass through the inner side of the U-shaped frame 31 and are fixedly connected to the fixing clamps 33.

[0034] Specifically, such as Figure 1 , Figure 3 As shown, a first rubber pad 34 is fixedly connected to the bottom of the inner side of the U-shaped frame 31, and a second rubber pad 35 is fixedly connected to the opposite side of the two fixed clamps 33.

[0035] Specifically, such as Figure 3 As shown, both sides of the U-shaped frame 31 are provided with through holes 4 that are used to cooperate with two clamping cylinders 32 respectively. The output rod surface of the clamping cylinder 32 is slidably connected to the inner wall of the through hole 4.

[0036] In this embodiment: by setting up a U-shaped frame 31, clamping cylinders 32, fixing plates 33, first rubber pads 34, second rubber pads 35, and through holes 4, in use, the safety valve to be tested is placed inside the U-shaped frame 31, and then the clamping cylinders 32 on both sides of the U-shaped frame 31 are activated, so that the output rods of the two clamping cylinders 32 push the two fixing plates 33 closer to the safety valve until the two first rubber pads 34 are tightly attached to the safety valve, thereby achieving rapid and stable clamping and fixing of the safety valve, preventing the safety valve from shifting during the testing process. The setting of the first rubber pads 34 can increase the friction force of clamping and fixing, and can prevent damage to the safety valve during clamping. The setting of the second rubber pads 35 can prevent friction damage between the safety valve and the U-shaped frame 31. The setting of the through holes 4 allows the output rods of the clamping cylinders 32 to pass through the U-shaped frame 31 for telescopic output.

[0037] Specifically, such as Figure 1 , Figure 2 , Figure 4As shown, the docking drive assembly 26 includes a lifting cylinder 261, which is fixedly connected to the front side of the top of the support frame 21. The output rod of the lifting cylinder 261 passes through the support frame 21 and is fixedly connected to a transmission block 262. The transmission block 262 is sleeved on the top of the surface of the sealing joint 22, and the inner wall of the transmission block 262 is fixedly connected to the top of the surface of the sealing joint 22.

[0038] Specifically, such as Figure 1 , Figure 2 , Figure 4 As shown, a limiting guide rod 263 is fixedly connected to the rear side of the top of the transmission block 262, and the top of the limiting guide rod 263 extends through to the top of the support frame 21.

[0039] In this embodiment: by setting up a lifting cylinder 261, a transmission block 262, and a limiting guide rod 263, in use, the lifting cylinder 261 can be activated to extend its output rod and drive the transmission block 262 to move downward. The transmission block 262 will drive the sealing joint 22 to move downward, thereby connecting the sealing joint 22 with the interface of the safety valve to be tested. The limiting guide rod 263 can guide and limit the transmission block 262, allowing the transmission block 262 to move up and down smoothly.

[0040] Specifically, such as Figure 1 , Figure 2 , Figure 5 As shown, the docking adjustment assembly 27 includes two longitudinal guide rails 271, which are fixedly connected to the two sides of the top rear side of the base 1, and longitudinal electric slide blocks 272 are slidably connected to the surfaces of the two longitudinal guide rails 271.

[0041] Specifically, such as Figure 1 , Figure 2 , Figure 5 As shown, a transverse guide rail 273 is fixedly connected between two longitudinal electric slides 272, and a transverse electric slide 274 is slidably connected to the surface of the transverse guide rail 273. The top of the transverse electric slide 274 is fixedly connected to the bottom of the support frame 21.

[0042] In this embodiment: by setting a longitudinal guide rail 271, a longitudinal electric slide block 272, a transverse guide rail 273, and a transverse electric slide block 274, in use, by controlling the longitudinal electric slide block 272 to slide along the longitudinal guide rail 271, the front and rear positions of the support frame 21 and the sealing joint 22 can be adjusted. By controlling the transverse electric slide block 274 to slide on the surface of the transverse guide rail 273, the left and right positions of the support frame 21 and the sealing joint 22 can be adjusted, so that the sealing joint 22 can be accurately aligned with the interface of the safety valve.

[0043] Specifically, such as Figure 4As shown, the front side of the top of the support frame 21 has a through hole 5 for use with the lifting cylinder 261, and the surface of the output rod of the lifting cylinder 261 is slidably connected to the inner wall of the through hole 5.

[0044] Specifically, such as Figure 4 As shown, a sliding hole 6 is provided on the top of the inner side of the support frame 21 to cooperate with the limiting guide rod 263. The surface of the limiting guide rod 263 is slidably connected to the inner wall of the sliding hole 6.

[0045] In this embodiment: by setting the through hole 5, the output rod of the lifting cylinder 261 can pass through the support frame 21 for telescopic output; by setting the sliding hole 6, the limiting guide rod 263 can pass through the support frame 21 for up and down sliding.

[0046] Working Principle: In use, the safety valve to be tested is first placed inside the U-shaped frame 31. Then, the PLC controller 28 activates the clamping cylinders 32 on both sides of the U-shaped frame 31, causing the output rods of the two clamping cylinders 32 to push the two fixed clamping plates 33 closer to the safety valve until the two first rubber pads 34 are tightly fitted with the safety valve. This achieves rapid and stable clamping and fixing of the safety valve, preventing displacement during testing. Then, the PLC controller 28 controls the longitudinal electric slide block 272 to slide along the longitudinal guide rail 271, adjusting the front-to-back position of the support frame 21 and the sealing joint 22. By controlling the transverse electric slide block 274 to slide on the surface of the transverse guide rail 273, the left-to-right position of the support frame 21 and the sealing joint 22 can be adjusted, ensuring the sealing joint 22 is precisely aligned with the safety valve's interface. Finally, the PLC controller 28 activates the lifting cylinder 261, raising... The output rod of the depressor cylinder 261 extends and drives the transmission block 262 to move downward. The transmission block 262 drives the sealing joint 22 to move downward. The limit guide rod 263 slides synchronously along the sliding hole 6 of the support frame 21 to ensure movement stability until the sealing joint 22 is tightly connected with the safety valve interface. Then, during the testing operation, the outer pipe 23 at the top of the sealing joint 22 can be connected to the test medium. The pressure value and medium flow rate change in the sealing joint 22 are monitored in real time by the detection heads of the pressure detector 24 and the flow detector 25, and the data is transmitted to the PLC controller 28. The PLC controller 28 analyzes the received data. If the pressure value drops abnormally or the flow rate rises abnormally beyond the preset threshold, the buzzer alarm 29 is immediately controlled to sound an alarm, indicating that the safety valve sealing performance is substandard. This enables automatic data acquisition, analysis, and abnormal alarm, reducing manual intervention and improving testing efficiency and accuracy.

[0047] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sealing detection device for safety valve production, comprising a base (1), characterized in that: The base (1) is provided with a detection mechanism (2) and a fixing component (3) on its top; The detection mechanism (2) includes a support frame (21) and a sealing joint (22). The top of the sealing joint (22) is connected to an external pipe (23). A pressure detector (24) is fixedly connected to the left side of the sealing joint (22), and a flow detector (25) is fixedly connected to the right side of the sealing joint (22). The detection heads of the pressure detector (24) and the flow detector (25) both penetrate into the sealing joint (22). A docking drive assembly (26) is provided at the top of the sealing joint (22), and a docking adjustment assembly (27) is provided at the bottom of the support frame (21). A PLC controller (28) for use with the pressure detector (24), the flow detector (25), the docking drive assembly (26), and the docking adjustment assembly (27) is fixedly connected to the rear right side of the support frame (21). A buzzer alarm (29) is fixedly connected to the top of the PLC controller (28).

2. The leak detection device for safety valve production according to claim 1, characterized in that: The fixing component (3) includes a U-shaped frame (31), which is fixedly connected to the front side of the top of the base (1). Both sides of the U-shaped frame (31) are fixedly connected to clamping cylinders (32), and the output rods of the two clamping cylinders (32) pass through the inside of the U-shaped frame (31) and are fixedly connected to fixing plates (33).

3. The sealing performance testing device for safety valve production according to claim 2, characterized in that: The bottom of the inner side of the U-shaped frame (31) is fixedly connected to a first rubber pad (34), and the two fixed clamps (33) are fixedly connected to a second rubber pad (35) on opposite sides.

4. The sealing performance testing device for safety valve production according to claim 2, characterized in that: Both sides of the U-shaped frame (31) are provided with through holes (4) that are used in conjunction with two clamping cylinders (32). The output rod surface of the clamping cylinder (32) is slidably connected to the inner wall of the through hole (4).

5. A sealing performance testing device for safety valve production according to claim 1, characterized in that: The docking drive assembly (26) includes a lifting cylinder (261), which is fixedly connected to the front side of the top of the support frame (21). The output rod of the lifting cylinder (261) passes through the support frame (21) and is fixedly connected to a transmission block (262). The transmission block (262) is sleeved on the top of the surface of the sealing joint (22), and the inner wall of the transmission block (262) is fixedly connected to the top of the surface of the sealing joint (22).

6. The sealing performance testing device for safety valve production according to claim 5, characterized in that: A limiting guide rod (263) is fixedly connected to the rear side of the top of the transmission block (262), and the top of the limiting guide rod (263) extends through to the top of the support frame (21).

7. A sealing performance testing device for safety valve production according to claim 1, characterized in that: The docking adjustment assembly (27) includes two longitudinal guide rails (271), which are fixedly connected to the two sides of the rear top of the base (1), and longitudinal electric slides (272) are slidably connected to the surfaces of the two longitudinal guide rails (271).

8. A sealing performance testing device for safety valve production according to claim 7, characterized in that: A transverse guide rail (273) is fixedly connected between two longitudinal electric slides (272), and a transverse electric slide (274) is slidably connected to the surface of the transverse guide rail (273). The top of the transverse electric slide (274) is fixedly connected to the bottom of the support frame (21).

9. A sealing performance testing device for safety valve production according to claim 5, characterized in that: The support frame (21) has a through hole (5) on the front side of the top, which is used in conjunction with the lifting cylinder (261). The output rod surface of the lifting cylinder (261) is slidably connected to the inner wall of the through hole (5).

10. A sealing performance testing device for safety valve production according to claim 6, characterized in that: The top of the inner side of the support frame (21) is provided with a sliding hole (6) that works in conjunction with the limiting guide rod (263). The surface of the limiting guide rod (263) is slidably connected to the inner wall of the sliding hole (6).

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