Pressure testing device capable of automatically releasing pressure

Abstract

The utility model discloses a pressure test device capable of automatically releasing pressure, which belongs to the technical field of pressure test detection equipment and comprises a base, an arc-shaped groove is arranged at the top end of a placing seat, a pressure plate is fixed at the output end of a hydraulic push rod, a liquid outlet is arranged on the side surface of the pressure plate, and a pipe sealing component is arranged on one side of the pressure plate close to the placing seat. A mounting assembly is arranged between the placing seat and the base; according to the utility model, the two ends of the pipe fitting are elastically sealed through the arranged pipe sealing assembly, and when the hydraulic pressure in the pipe fitting exceeds an upper limit value, the excessive hydraulic pressure presses the pipe sealing assembly to generate deformation, so that the pressure in the pipe fitting is automatically relieved through the pipe sealing assembly, the protection to the pipe fitting in the detection process is effectively improved, and the detection efficiency is improved. The placement seats can be replaced through the installation assembly, so that the placement seats with different arc-shaped grooves are installed at the top end of the base, and the pressure test device can be suitable for pressure test detection of pipe fittings with different specifications and sizes.

Description

Technical Field

[0001] This utility model relates to the field of pressure testing equipment technology, and in particular to a pressure testing device with automatic pressure relief. Background Technology

[0002] Pressure testing is a crucial step in the installation and maintenance of pipeline systems. It is used to check the sealing and pressure resistance of the pipeline system and to verify whether the pipeline quality meets the requirements.

[0003] For example, Chinese Patent Publication No. CN219890964U discloses a pipeline pressure testing device, comprising: a worktable for placing a pipeline sample, pressure testing groups on both sides of the worktable, a cylinder for pushing the pressure testing groups toward the pipeline sample, and a slide group for moving the cylinder up and down; the pressure testing group includes: a support plate connected to the telescopic end of the cylinder, a sealing plate connected to the support plate, and a pipe fitting inside and passing through the sealing plate; wherein a sealing gasket is connected to the sealing plate; wherein a one-way valve is connected to the pipe fitting of one pressure testing group and an overflow valve is connected to the other pipe fitting. This pipeline pressure testing device, by setting a sealing plate with a sealing gasket, can adapt to pipeline samples of different diameters, and simplifies the sealing steps and operation process, greatly improving the efficiency of pressure testing.

[0004] However, when using this device, the bolt-fixed clamping method for pipe positioning makes the entire fixing process time-consuming, which prolongs the inspection time, increases the workload of workers, and reduces the overall inspection efficiency. At the same time, it is difficult to position pipes of different specifications and sizes, making it inconvenient to use.

[0005] Therefore, it is necessary to provide an automatic pressure relief testing device to solve the above-mentioned technical problems. Utility Model Content

[0006] The purpose of this invention is to provide an automatic pressure relief testing device to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following solution to the aforementioned technical problems: an automatic pressure relief testing device includes a base, a placement seat on the top of the base, an arc-shaped groove at the top of the placement seat, two symmetrically distributed support plates fixed at both ends of the top surface of the base, hydraulic push rods fixed on the sides of the two support plates that are close to each other, a pressure plate fixed on the output end of the hydraulic push rod, a cavity opened inside one of the pressure plates and the cavity connected to a liquid inlet pipe, a liquid outlet opened on the side of the pressure plate that communicates with the cavity, a sealing pipe assembly provided on the side of the pressure plate near the placement seat, and an installation assembly provided between the placement seat and the base.

[0008] As a further embodiment of this utility model, the sealing tube assembly includes an outer sleeve fixed to the side of the pressure plate, and an annular rubber block is fitted and fixed inside the outer sleeve, with a liquid cavity opened inside the annular rubber block.

[0009] As a further embodiment of this utility model, an infusion tubing is connected between the two annular rubber blocks. The two ends of the infusion tubing are respectively connected to the liquid cavities inside the two annular rubber blocks. A liquid cylinder is connected to the center of the infusion tubing. An electric push rod is fixed on the top of the base. A piston plate that fits tightly against the inner wall of the liquid cylinder is fixed on the output end of the electric push rod.

[0010] As a further embodiment of this utility model, the mounting assembly includes an insertion slot opened at the top of the base, and the bottom of the placement seat is fixed with an insertion block that fits into the insertion slot.

[0011] As a further embodiment of this utility model, two symmetrically distributed protrusions are fixed on one end of the insert block, and screw holes are provided on the side of the protrusions, with bolts threaded into the screw holes.

[0012] As a further embodiment of this utility model, a handle is fixed at the middle of one end of the insertion block, and a rubber sleeve is fitted onto the surface of the handle.

[0013] As a further embodiment of this utility model, a fixing plate is fixed on the top of the base, and the liquid cylinder is fixed to the fixing plate.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. The sealing assembly is used to elastically seal both ends of the pipe fitting. When the internal hydraulic pressure of the pipe fitting exceeds the upper limit, the excessive hydraulic pressure causes the sealing assembly to deform, which opens the pipe fitting port to a certain extent. This allows the sealing assembly to automatically release the internal pressure of the pipe fitting, preventing excessive hydraulic pressure from damaging the side wall of the pipe fitting and effectively improving the protection of the pipe fitting during the testing process.

[0016] 2. When pressure testing pipe fittings of different specifications and sizes, the mounting bracket can be replaced by the set installation components. This allows for the installation of mounting brackets with different arc-shaped grooves on the top of the base, making it suitable for pressure testing pipe fittings of different specifications and sizes. This effectively improves the applicability of the overall device and enhances its overall practicality. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0018] Figure 1 The overall three-dimensional structure of this utility model Figure 1 ;

[0019] Figure 2 The overall three-dimensional structure of this utility model Figure 2 ;

[0020] Figure 3 The overall three-dimensional structure of this utility model Figure 3 ;

[0021] Figure 4 This is a partial structural diagram of the sealing tube assembly of this utility model;

[0022] Figure 5 This is a cross-sectional view of the sealing tube assembly of this utility model;

[0023] Figure 6 This is a partial structural diagram of the mounting components of this utility model.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 1. Sealing assembly; 101. Annular rubber block; 102. Liquid chamber; 103. External sleeve; 104. Infusion tubing; 105. Liquid cylinder; 106. Electric push rod; 2. Mounting assembly; 201. Protruding plate; 202. Screw hole; 203. Handle; 204. Rubber sleeve; 205. Insertion slot; 206. Insert block; 3. Placement seat; 4. Base; 5. Arc-shaped groove; 6. Hydraulic push rod; 7. Pressure plate; 8. Inlet pipe; 9. Support plate; 10. Fixing plate; 11. Cavity; 12. Outlet. Detailed Implementation

[0026] The present invention will be further described below with reference to the embodiments.

[0027] Please see Figure 1-6This utility model provides an automatic pressure relief testing device, including a base 4, a placement seat 3 on the top of the base 4, an arc-shaped groove 5 at the top of the placement seat 3, two symmetrically distributed support plates 9 fixed at both ends of the top surface of the base 4, hydraulic push rods 6 fixed on the sides of the two support plates 9 that are close to each other, and pressure plates 7 fixed on the output ends of the hydraulic push rods 6. One of the pressure plates 7 has a cavity 11 inside, and the cavity 11 is connected to a liquid inlet pipe 8. A liquid outlet connected to the cavity 11 is opened on the side of the pressure plate 7. 12. A sealing assembly 1 is provided on the side of the pressure plate 7 near the placement seat 3, and an installation assembly 2 is provided between the placement seat 3 and the base 4. In use, the pipe to be tested is placed inside the arc-shaped groove 5 of the placement seat 3, which supports the pipe. The two hydraulic push rods 6 are activated, and their output ends drive the pressure plate 7 to move closer to the placement seat 3. This allows the sealing assemblies 1 on the two pressure plates 7 to be inserted onto both ends of the pipe, thus sealing the pipe. Both ends are elastically sealed. The inlet pipe 8 is connected to an external water pump, which delivers water to the cavity 11 through the inlet pipe 8 and delivers water to the inside of the pipe fitting through the outlet 12, so that the inside of the pipe fitting has a certain hydraulic pressure, thereby performing pressure testing on the pipe fitting. During this process, when the hydraulic pressure inside the pipe fitting exceeds the upper limit, the excessive hydraulic pressure causes the sealing assembly 1 to deform, causing the port of the pipe fitting to open to a certain extent. Thus, the sealing assembly 1 automatically releases the pressure inside the pipe fitting, avoiding damage to the side wall of the pipe fitting caused by excessive hydraulic pressure, effectively improving the protection of the pipe fitting during the testing process. After the pipe fitting is tested, the seal on the end of the pipe fitting is removed by the sealing assembly 1, and the tested pipe fitting can be taken out. When performing pressure testing on pipe fittings of different specifications and sizes, the placement seat 3 can be replaced by the installation assembly 2, so that a placement seat 3 with different arc-shaped grooves 5 is installed on the top of the base 4, thus making it applicable to pressure testing on pipe fittings of different specifications and sizes, effectively improving the applicability of the overall device and improving its overall practicality.

[0028] Further as Figure 1 , Figure 3 and Figure 5As shown, it is worth noting that the sealing assembly 1 includes an outer sleeve 103 fixed to the side of the pressure plate 7. An annular rubber block 101 is fitted and fixed inside the outer sleeve 103. A liquid cavity 102 is formed inside the annular rubber block 101. An infusion tubing 104 is connected between the two annular rubber blocks 101. Both ends of the infusion tubing 104 are connected to the liquid cavities 102 inside the two annular rubber blocks 101, respectively. A liquid cylinder 105 is connected to the center of the infusion tubing 104. An electric push rod 106 is fixed to the top of the base 4. A piston plate that fits tightly against the inner wall of the liquid cylinder 105 is fixed to the output end of the electric push rod 106. In operation, the output end of the hydraulic push rod 6 drives the pressure plate 7 to move closer to the placement seat 3, thereby allowing the annular rubber blocks 101 on the two pressure plates 7 to fit onto the outside of both ends of the fitting. The electric push rod 106 is then activated, and its output end drives the piston in the liquid cylinder 105. 05 Internal movement: The liquid cylinder 105 is filled with a certain amount of liquid, such as water or hydraulic oil. The liquid in the cylinder 105 is simultaneously injected into the two annular rubber blocks 101 via the infusion hose 104 through the piston plate. This causes the two annular rubber blocks 101 to expand synchronously, pressing their sidewalls tightly against the outer wall of the pipe end, thus elastically sealing both ends of the pipe. When the internal hydraulic pressure of the pipe exceeds the upper limit, the excessive liquid pressure causes the annular rubber blocks 101 to deform and open, opening the pipe end to a certain extent. This automatically releases pressure inside the pipe, preventing excessive hydraulic pressure from damaging the sidewalls and effectively improving protection during testing. After the pipe is tested, the hydraulic pressure in the cylinder 105 is removed by the electric push rod 106, releasing the seal of the annular rubber blocks 101 on the pipe end, allowing the tested pipe to be removed.

[0029] Further as Figure 1 , Figure 2 and Figure 6 As shown, it is worth noting that the mounting component 2 includes an insertion slot 205 at the top of the base 4. The bottom of the placement seat 3 is fixed with an insertion block 206 that fits into the insertion slot 205. Two symmetrically distributed protrusions 201 are fixed on one end of the insertion block 206. The side of the protrusion 201 is provided with a screw hole 202, and a bolt is threaded into the screw hole 202. When pressure testing is performed on pipe fittings of different specifications and sizes, the bolts on the protrusion 201 can be removed, thereby removing the insertion block 206 from the insertion slot 205. The placement seat 3 can then be replaced, and a placement seat 3 with different arc-shaped grooves 5 can be installed on the top of the base 4. This makes it suitable for pressure testing of pipe fittings of different specifications and sizes, effectively improving the applicability of the overall device and enhancing its overall practicality.

[0030] The working process of this solution is as follows: The pipe fitting to be tested is placed inside the arc-shaped groove 5 of the placement seat 3, and the placement seat 3 supports the pipe fitting. The output end of the hydraulic push rod 6 drives the pressure plate 7 to move closer to the placement seat 3, so that the annular rubber blocks 101 on the two pressure plates 7 are fitted onto the outside of both ends of the pipe fitting. The output end of the electric push rod 106 drives the piston to move inside the liquid cylinder 105. The piston plate pushes the liquid in the liquid cylinder 105 into the two annular rubber blocks 101 through the infusion hose 104, so that the two annular rubber blocks 101 expand synchronously, making the side walls of the annular rubber blocks 101 tightly pressed. The pipe ends are sealed on the outer wall of the pipe fitting. When the internal hydraulic pressure of the pipe fitting exceeds the upper limit, the excessive liquid pressure causes the annular rubber block 101 to deform and open, thus opening the pipe fitting port to a certain extent and automatically relieving the internal pressure of the pipe fitting, avoiding damage to the side wall of the pipe fitting caused by excessive hydraulic pressure. When pressure testing pipe fittings of different specifications and sizes, the bolts on the convex plate 201 can be removed, and the insert 206 can be removed from the insertion slot 205. Then, a placement seat 3 with different arc-shaped grooves 5 can be installed on the top of the base 4, which can be used to pressure test pipe fittings of different specifications and sizes.

[0031] Further as Figure 6 As shown, it is worth noting that a handle 203 is fixed at the middle of one end of the insertion block 206, and a rubber sleeve 204 is fitted onto the surface of the handle 203; in actual operation, the insertion block 206 can be easily pulled by the handle 203, which facilitates the replacement of the placement seat 3.

[0032] Further as Figure 1 , Figure 2 and Figure 3 As shown, it is worth noting that a fixing plate 10 is fixed on the top of the base 4, and the liquid cylinder 105 is fixed to the fixing plate 10.

[0033] In summary: The output end of the hydraulic push rod 6 drives the pressure plate 7 to move closer to the placement seat 3, thereby allowing the sealing assembly 1 on the two pressure plates 7 to be fitted onto the two ends of the pipe fitting. The sealing assembly 1 elastically seals both ends of the pipe fitting. An external water pump is connected to the inlet pipe 8, which delivers water into the cavity 11 and then into the pipe fitting through the outlet 12, creating a certain amount of hydraulic pressure inside the pipe fitting. This allows for pressure testing of the pipe fitting. During this process, if the internal hydraulic pressure exceeds the upper limit, the excessive hydraulic pressure causes the sealing assembly 1 to deform, opening the pipe fitting's ends to a certain extent. The sealing assembly 1 automatically depressurizes the inside of the pipe fitting, preventing excessive hydraulic pressure from damaging the sidewalls of the pipe fitting and effectively improving the protection of the pipe fitting during the testing process. After the pipe fitting is tested, the sealing assembly 1 removes the seal on the end of the pipe fitting, allowing the tested pipe fitting to be taken out. When pressure testing pipe fittings of different specifications and sizes, the mounting assembly 2 can replace the placement seat 3, thereby replacing the placement seat 3 with a different arc-shaped groove 5 on the top of the base 4. This makes it suitable for pressure testing pipe fittings of different specifications and sizes, effectively improving the applicability of the overall device and enhancing its overall practicality.

[0034] The electric actuator 106 and the hydraulic actuator 6 can be purchased from the market. The electric actuator 106 and the hydraulic actuator 6 are equipped with power supplies. They are mature technologies in the field and have been fully disclosed. Therefore, they will not be described again in the specification.

Claims

1. An automatic pressure relief testing device, comprising a base, characterized in that, A placement seat is provided at the top of the base, and an arc-shaped groove is provided at the top of the placement seat. Two symmetrically distributed support plates are fixed at both ends of the top surface of the base. A hydraulic push rod is fixed on the side of the two support plates that are close to each other. A pressure plate is fixed on the output end of the hydraulic push rod. One of the pressure plates has a cavity inside and the cavity is connected to a liquid inlet pipe. A liquid outlet is provided on the side of the pressure plate that is connected to the cavity. A sealing tube assembly is provided on the side of the pressure plate near the placement seat. An installation assembly is provided between the placement seat and the base.

2. The automatic pressure relief testing device according to claim 1, characterized in that, The sealing tube assembly includes an outer sleeve fixed to the side of the pressure plate, and an annular rubber block is fitted and fixed inside the outer sleeve. The annular rubber block has a liquid cavity inside.

3. The automatic pressure relief testing device according to claim 2, characterized in that, An infusion tubing is connected between the two annular rubber blocks. The two ends of the infusion tubing are respectively connected to the liquid cavities inside the two annular rubber blocks. A liquid cylinder is connected to the center of the infusion tubing. An electric push rod is fixed on the top of the base. A piston plate that fits tightly against the inner wall of the liquid cylinder is fixed on the output end of the electric push rod.

4. The automatic pressure relief testing device according to claim 1, characterized in that, The mounting assembly includes an insertion slot at the top of the base, and a plug that fits into the insertion slot is fixed at the bottom of the placement seat.

5. The automatic pressure relief testing device according to claim 4, characterized in that, Two symmetrically distributed protrusions are fixed to one end of the insert block. The protrusions have screw holes on their sides, and bolts are threaded into the screw holes.

6. The automatic pressure relief testing device according to claim 5, characterized in that, A handle is fixed at the middle of one end of the insertion block, and a rubber sleeve is fitted onto the surface of the handle.

7. The automatic pressure relief testing device according to claim 3, characterized in that, A fixing plate is fixed to the top of the base, and the liquid cylinder is fixed to the fixing plate.

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