Safety valve backpressure experiment device

Abstract

The utility model relates to the field of safety valves, in particular to a safety valve backpressure experiment device which comprises an air source meter frame, an input pipe is arranged on the air source meter frame, one end of the input pipe is communicated with an air filtering pressure reducing valve, the other end of the input pipe is communicated to a manual ball valve, and a pipeline is arranged on the manual ball valve and communicated to a three-way connector. By arranging the clamping fixture, the manual ball valve and the air filtering pressure reducing valve, the effect of convenient installation is achieved, the PTFE clamping fixture is fastened to a safety valve outlet flange through the U-shaped buckle, an independent air source is used, the safety valve outlet flange is fixed through the air filtering pressure reducing valve, and the safety valve outlet flange is fixed through the air filtering pressure reducing valve. The pressure of the air source is adjusted to the required pressure through the air filtering pressure reducing valve, the air source switch is controlled through the manual ball valve, the air source enters the outlet of the safety valve through the air source, soapy water is sprayed for leakage detection, the clamping difficulty and the safety risk are reduced, the installation time is shortened, the verification time of the safety valve and the labor cost are saved, and the working efficiency of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of safety valve technology, specifically to a safety valve back pressure testing device. Background Technology

[0002] The safety valve back pressure test is mainly conducted after the safety valve's set pressure and sealing test are completed. The safety valve outlet flange is then re-clamped onto the test bench, the test bench is opened, and air is introduced for pressure testing.

[0003] Zhejiang Petrochemical's more than 25,000 safety valves need to undergo annual inspection and calibration. When conducting back pressure tests, the outlet flange of the safety valve needs to be clamped onto the calibration table. However, when testing large-diameter safety valves, the clamping is difficult, time-consuming, and poses a high safety risk. It also requires a lot of labor costs and reduces the working efficiency of the unit. Utility Model Content

[0004] To address the aforementioned issues, a safety valve back pressure testing device is provided. This device utilizes a jig, a manual ball valve, and an air filter pressure reducing valve. The jig is secured to the safety valve outlet flange using U-shaped clips, making clamping convenient and quick. The air source pressure is adjusted to the required pressure via the air filter pressure reducing valve, and the air source switch is controlled by the manual ball valve. The air source enters the safety valve outlet, and soapy water is sprayed for leak testing. This reduces clamping difficulty and shortens installation time, solving the problems of high clamping difficulty, long installation time, high safety risks, high labor costs, and reduced device efficiency associated with large-diameter safety valves.

[0005] To address the problems in the existing technology, this utility model provides the following technical solution:

[0006] A safety valve back pressure testing device includes a gas source gauge frame, an input pipe on the gas source gauge frame, one end of the input pipe being connected to an air filter pressure reducing valve, and the other end of the input pipe being connected to a manual ball valve, a pipe on the manual ball valve being connected to a tee connector, an output pipe being connected to the tee connector, a fixture being connected to the output pipe, a storage mechanism on the gas source gauge frame, the storage mechanism including a placement component for storing the fixture and tools and a pipe winding component for storing the pipe, and a quick-release mechanism on the gas source gauge frame for quickly assembling and disassembling the air filter pressure reducing valve.

[0007] Preferably, the top of the gas source meter frame is equipped with a precision pressure gauge, the precision pressure gauge is equipped with a pressure gauge connector, and a pipe is connected between the pressure gauge connector and the tee connector.

[0008] Preferably, the placement component includes a first storage box, which is disposed on the gas source meter rack, and a placement platform is provided inside the first storage box.

[0009] Preferably, the tube winding assembly includes a second storage box and a tube winding rod. The second storage box is disposed on the gas source meter frame and is arranged side by side with the first storage box. The tube winding rod is rotatably disposed on the second storage box. One end of the tube winding rod extends outside the second storage box and is fixedly provided with a rotating handle. A buffer rod is provided on the side wall of the second storage box away from the rotating handle. A pressure plate is provided on the buffer rod and is sleeved on the tube winding rod. The pressure plate is provided with multiple claw teeth.

[0010] Preferably, the quick-release mechanism includes a snap-fit ​​plate, a lever, and a limiting block. The air source meter frame is provided with a side plate, and the side plate has a snap-fit ​​groove for snap-fit ​​installation of the snap-fit ​​plate. A limiting groove adapted to the limiting block is symmetrically provided along the central axis of the snap-fit ​​plate in the snap-fit ​​groove. The snap-fit ​​plate is provided on the air filter pressure reducing valve. An L-shaped moving groove is symmetrically provided along the central axis of the snap-fit ​​plate. The lever and the limiting block are provided in the moving groove. A guide groove is provided on the inner wall of the moving groove. A slider is slidably fitted in the guide groove. The slider is connected to the side wall pipe of the lever. A spring is provided between the lever and the inner wall of the moving groove.

[0011] Preferably, the lever is provided with multiple anti-slip strips.

[0012] The advantages of this utility model compared to the prior art are:

[0013] 1. This utility model achieves easy installation by setting up a fixture, a manual ball valve, and an air filter pressure reducing valve. According to the specifications of the safety valve, a PTFE fixture of the corresponding specification is taken from the placement assembly. A suitable length of pipe is pre-installed using the pipe winding assembly, and then U-shaped fasteners are used to secure it to the safety valve outlet flange. The clamping is convenient and quick. A separate air source is used; the air pressure is adjusted to the required pressure through the air filter pressure reducing valve. The air source switch is controlled by the manual ball valve, and the air enters the safety valve outlet through the air source. Leak testing is performed by spraying soapy water. The back pressure test clamping difficulty of the safety valve is reduced, installation time is shortened, safety risks are reduced, safety valve calibration time is saved, labor costs are reduced, and the working efficiency of the device is improved.

[0014] 2. This utility model achieves convenient centralized storage by setting up a storage mechanism. After the experiment, the disassembled fixtures can be placed in the placement platform, and the tools can be placed in the first storage box for centralized collection for use in the next experiment, thus improving the storage capacity of the device. By rotating the handle, the pipe-winding rod is driven to rotate, and redundant pipes are wound and stored. The buffer rod pushes the pressure plate so that the pressure plate always abuts against the pipe, preventing the wound pipe from loosening. At the same time, the claw teeth play a limiting role in the pipe, thereby improving the practicality and convenience of the device. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of a safety valve back pressure test device.

[0016] Figure 2 This is a schematic diagram of the first side view of a safety valve back pressure test device.

[0017] Figure 3 This is a schematic diagram of the second side view of a safety valve back pressure test device.

[0018] Figure 4 A schematic diagram of the quick-release mechanism of a safety valve back pressure testing device Figure 1 .

[0019] Figure 5 A schematic diagram of the quick-release mechanism of a safety valve back pressure testing device Figure 2 .

[0020] Figure 6 A schematic diagram of the quick-release mechanism of a safety valve back pressure testing device Figure 3 .

[0021] Figure 7 This is a cross-sectional view of a safety valve back pressure test apparatus.

[0022] The diagram is labeled as follows: 100, Air source gauge holder; 101, Input pipe; 102, Air filter pressure reducing valve; 103, Pressure gauge connector; 104, Precision pressure gauge; 105, T-connector; 106, Manual ball valve; 107, Output pipe; 108, Fixture; 200, Storage mechanism; 201, First storage box; 202, Second storage box; 203, Rotary handle; 204, Pipe winding rod; 205, Buffer rod; 206, Pressure plate; 207, Claw teeth; 208, Placement platform; 300, Quick release mechanism; 301, Side plate; 302, Snap-fit ​​plate; 303, Toggle block; 304, Moving groove; 305, Spring; 306, Anti-slip strip; 307, Limiting block; 308, Snap-fit ​​groove; 309, Limiting groove; 310, Guide groove. Detailed Implementation

[0023] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0024] See Figures 1-7As shown, a safety valve back pressure testing device includes a gas source gauge 100, an input pipe 101 on the gas source gauge 100, one end of the input pipe 101 being connected to an air filter pressure reducing valve 102, and the other end of the input pipe 101 being connected to a manual ball valve 106, a pipe on the manual ball valve 106 being connected to a tee connector 105, an output pipe 107 being connected to the tee connector 105, a fixture 108 being connected to the output pipe 107, a storage mechanism 200 on the gas source gauge 100, the storage mechanism 200 including a placement component for storing the fixture 108 and tools and a pipe winding component for storing pipes, and a quick-release mechanism 300 on the gas source gauge 100 for quickly assembling and disassembling the air filter pressure reducing valve 102.

[0025] During the back pressure test, according to the specifications of the safety valve, a PTFE jig 108 of the appropriate specification is taken from the placement assembly. A suitable length of pipe is pre-installed using the pipe winding assembly, and then U-shaped fasteners are used to secure it to the safety valve outlet flange. The clamping process is convenient and quick. A separate air source is used. The air source pressure is adjusted to the required pressure through the air filter pressure reducing valve 102, and the air source switch is controlled by the manual ball valve 106. The air source enters the safety valve outlet, and soapy water is sprayed for leak testing. This perfectly solves the problems of difficult valve clamping and high safety risks associated with the device.

[0026] The development of the back pressure testing fixture has solved the problems of difficult clamping, long time consumption, and high safety risks in back pressure testing of safety valves. It saves the calibration time of safety valves and labor costs. By setting up the quick-release mechanism 300, it is convenient to quickly install or remove the air filter pressure reducing valve 102, which facilitates the replacement of the air filter pressure reducing valve 102 and improves the working efficiency of the device.

[0027] See Figures 1-2 As shown, a precision pressure gauge 104 is provided on the top of the gas source gauge frame 100, and a pressure gauge connector 103 is provided on the precision pressure gauge 104. A pipe is provided between the pressure gauge connector 103 and the tee connector 105.

[0028] By setting a precision pressure gauge 104, the pressure of the gas source can be accurately determined, allowing staff to adjust the pressure according to the specifications of the safety valve, thus improving the accuracy of the experiment and the reliability of the device.

[0029] See Figures 1-3 As shown, the placement component includes a first storage box 201, which is disposed on the gas source meter rack 100, and a placement platform 208 is provided inside the first storage box 201.

[0030] By setting up placement components, after the experiment is completed, the disassembled fixture 108 can be placed into the placement platform 208, and the tools can be placed into the first storage box 201 for centralized collection for use in the next experiment, thereby improving the storage capacity of the device and enhancing its practicality and convenience.

[0031] See Figures 1-3 As shown, the tube winding assembly includes a second storage box 202 and a tube winding rod 204. The second storage box 202 is mounted on the gas source meter holder 100 and is arranged side by side with the first storage box 201. The tube winding rod 204 is rotatably mounted on the second storage box 202. One end of the tube winding rod 204 extends outside the second storage box 202 and is fixedly provided with a rotating handle 203. A buffer rod 205 is provided on the side wall of the second storage box 202 away from the rotating handle 203. A pressure plate 206 is provided on the buffer rod 205. The pressure plate 206 is sleeved on the tube winding rod 204 and is provided with multiple claw teeth 207.

[0032] By rotating the handle 203, the winding rod 204 is driven to rotate, and the redundant pipe is wound and stored. The buffer rod 205 pushes the pressure plate 206 so that the pressure plate 206 always abuts against the pipe to prevent the wound pipe from loosening. At the same time, the claw teeth 207 limit the pipe and improve the flexibility of the device.

[0033] See Figures 3-7 As shown, the quick-release mechanism 300 includes a snap-fit ​​plate 302, a lever 303, and a limiting block 307. The air source meter holder 100 is provided with a side plate 301. The side plate 301 has a snap-fit ​​groove 308 for snap-fitting the snap-fit ​​plate 302. The snap-fit ​​groove 309, which is adapted to the limiting block 307, is symmetrically provided along the central axis of the snap-fit ​​plate 302 in the snap-fit ​​groove 308. The snap-fit ​​plate 302 is provided on the air filter pressure reducing valve 102. The snap-fit ​​plate 302 has an L-shaped moving groove 304 symmetrically provided along the central axis of the snap-fit ​​plate 302. The lever 303 and the limiting block 307 are provided in the moving groove 304. The inner wall of the moving groove 304 has a guide groove 310. A slider is slidably fitted in the guide groove 310. The slider is connected to the side wall pipe of the lever 303. A spring 305 is provided between the lever 303 and the inner wall of the moving groove 304.

[0034] When the air filter pressure reducing valve 102 needs to be installed, the operator manually moves the lever 303 to retract the limit block 307 into the moving groove 304, then snaps the snap plate 302 into the snap groove 308, releases the lever 303, and uses the spring 305 to snap the limit block 307 into the limit groove 309, thus fixing the position of the air filter pressure reducing valve 102 and facilitating quick installation. When the air filter pressure reducing valve 102 needs to be replaced or repaired, the lever 303 is moved to compress the spring 305, causing the limit block 307 to move away from the limit groove 309, and then the snap plate 302 is pulled out of the snap groove 308, thus disassembling the air filter pressure reducing valve 102 and improving the convenience and flexibility of the device.

[0035] See Figures 4-7 As shown, the lever block 303 is provided with multiple anti-slip strips 306.

[0036] Multiple anti-slip strips 306 are installed to increase friction and prevent slipping, so that workers can move the lever 303 more easily and improve the stability of the device.

[0037] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A safety valve back pressure testing device, characterized in that, The device includes an air source meter holder (100), an input pipe (101) on the air source meter holder (100), one end of the input pipe (101) being connected to an air filter pressure reducing valve (102), and the other end of the input pipe (101) being connected to a manual ball valve (106). The manual ball valve (106) is provided with a pipe connected to a tee connector (105), and an output pipe (107) is connected to the tee connector (105). The output pipe (107) is connected to a fixture (108). The air source meter holder (100) is provided with a storage mechanism (200), which includes a storage component for storing the fixture (108) and tools and a pipe winding component for storing pipes. The air source meter holder (100) is provided with a quick-release mechanism (300) that enables quick disassembly and assembly of the air filter pressure reducing valve (102).

2. The safety valve back pressure testing device according to claim 1, characterized in that, The gas source meter holder (100) is equipped with a precision pressure gauge (104) on top, and a pressure gauge connector (103) is provided on the precision pressure gauge (104). A pipe is provided between the pressure gauge connector (103) and the tee connector (105).

3. The safety valve back pressure testing device according to claim 1, characterized in that, The placement component includes a first storage box (201), which is located on the gas source meter rack (100), and a placement platform (208) is provided inside the first storage box (201).

4. The safety valve back pressure testing device according to claim 3, characterized in that, The winding assembly includes a second storage box (202) and a winding rod (204). The second storage box (202) is mounted on the gas source meter holder (100). The second storage box (202) and the first storage box (201) are arranged side by side. The winding rod (204) is rotatably mounted on the second storage box (202). One end of the winding rod (204) extends to the outside of the second storage box (202) and is fixedly provided with a handle (203). A buffer rod (205) is provided on the side wall of the second storage box (202) away from the handle (203). A pressure plate (206) is provided on the buffer rod (205). The pressure plate (206) is sleeved on the winding rod (204). The pressure plate (206) is provided with multiple claw teeth (207).

5. The safety valve back pressure testing device according to claim 1, characterized in that, The quick-release mechanism (300) includes a snap-fit ​​plate (302), a lever (303), and a limiting block (307). A side plate (301) is provided on the air source meter holder (100). A snap-fit ​​groove (308) for snap-fit ​​installation of the snap-fit ​​plate (302) is provided on the side plate (301). A limiting groove (309) adapted to the limiting block (307) is symmetrically provided along the central axis of the snap-fit ​​plate (302) within the snap-fit ​​groove (308). The snap-fit ​​plate (302) is located on the air filter pressure reducing valve (…). On 102), L-shaped moving grooves (304) are symmetrically opened along the central axis of the snap-fit ​​plate (302). The push block (303) and the limiting block (307) are located in the moving groove (304). A guide groove (310) is opened on the inner wall of the moving groove (304). A slider is slidably fitted in the guide groove (310). The slider is connected to the side wall pipe of the push block (303). A spring (305) is provided between the push block (303) and the inner wall of the moving groove (304).

6. The safety valve back pressure testing device according to claim 5, characterized in that, The push block (303) is provided with multiple anti-slip strips (306).

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