Sealing ring leakproofness testing device for pressure release valve

Abstract

The utility model discloses a sealing ring leakproofness testing device for a pressure release valve, and relates to the technical field of sealing ring leakproofness testing, the sealing ring leakproofness testing device comprises two mounting racks; the fixing plate is fixedly mounted on the upper sides of the front ends of the two mounting frames, the fixing plate is fixed to the upper sides of the front ends of the mounting frames through threaded connection, an air cylinder is arranged at the front end of the fixing plate, a fixing barrel is arranged at the bottom of the air cylinder, the air cylinder drives the fixing barrel to move up and down, and the bottom of the fixing barrel is open; a detection cylinder is arranged in the fixed cylinder and can be replaced, the detection cylinder can be replaced according to the sizes of different pressure release valves, so that the pressure release valves with different sizes can be adapted, the fixed cylinder and the pressure release valves are clamped through descending of an air cylinder, and the interior of the detection cylinder is inflated through a ventilation pipe on one side; therefore, whether the sealing ring leaks or not can be detected.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing ring sealing test, in particular to a sealing ring airtightness testing device for a pressure relief valve. Background Art

[0002] The pressure relief valve, also known as a safety valve, is an automatic overpressure protection device. Its main function is to automatically open and release the pressure when the pressure in the equipment or pipeline exceeds the set value, so as to protect the equipment and pipeline from overpressure damage and prevent accidents. The sealing ring outside the pressure relief valve plays a vital role in the pressure relief valve. The sealing ring is the key sealing element between the pressure relief valve and the pipeline or other connecting parts. It can effectively prevent the medium from leaking out from the connection between the pressure relief valve and the pipeline, ensuring the sealing and integrity of the system.

[0003] Usually, the sealing ring on the pressure relief valve needs to be tested for tightness after production to prevent leakage of the sealing ring. The tests on the market all test the sealing ring separately, which results in the sealing effect of the sealing ring not being fully displayed and inaccurate detection is prone to occur; therefore, we propose a sealing ring tightness test device for a pressure relief valve to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a sealing ring tightness testing device for a pressure relief valve, so as to solve the problem proposed in the above background technology that the sealing ring is tested separately in the market, which leads to the sealing effect of the sealing ring cannot be fully demonstrated and inaccurate detection is prone to occur.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sealing ring tightness testing device for a pressure relief valve, comprising a mounting frame, wherein two mounting frames are provided;

[0006] Also includes:

[0007] A fixing plate is fixedly mounted on the upper front end side of the two mounting frames, and the fixing plate is fixed to the upper front end side of the mounting frames by threaded connection, a cylinder is arranged at the front end of the fixing plate, a fixing tube is arranged at the bottom of the cylinder, the cylinder drives the fixing tube to move up and down, and the bottom of the fixing tube is open, a detection tube is arranged inside the fixing tube, and the detection tube is movably engaged inside the fixing tube, a ventilation pipe is arranged on one side of the outside of the fixing tube, and the ventilation pipe is connected to the inside of the fixing tube, a first through hole is arranged on one side of the outside of the detection tube, and the first through hole is connected to the ventilation pipe.

[0008] Preferably, a connecting plate is provided between the two mounting frames, an electric push rod is provided at the front end of the connecting plate, and a pneumatic clamp is provided at the front end of the electric push rod.

[0009] Preferably, an anti-slip pad is bonded to the inner side of the clamping jaws at the front end of the pneumatic clamp.

[0010] Preferably, a latch is provided on one side of the exterior of the detection cylinder, a slide groove is provided on one side of the inner wall of the fixing cylinder, and the latch is slidably engaged in the interior of the slide groove.

[0011] Preferably, a second through hole is provided at the external front end of the fixing cylinder, a threaded hole is provided at the external front end of the detecting cylinder, and the second through hole is aligned with the threaded hole when the detecting cylinder is engaged with the fixing cylinder, the detecting cylinder and the fixing cylinder are connected and fixed by a fixing bolt, and the fixing bolt passes through the second through hole and is threadedly connected with the threaded hole.

[0012] Preferably, an oblique groove is integrally formed on the bottom of the inner wall of the detection cylinder.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. A mounting frame is provided, and a cylinder is provided at the front end of the mounting frame. The bottom of the cylinder is connected to a fixed cylinder and a detection cylinder. The inner diameter of the detection cylinder can be assembled according to the size of the pressure relief valve. The detection cylinder can be replaced. The detection cylinder can be replaced according to the size of different pressure relief valves so that pressure relief valves of different sizes can be adapted. The fixed cylinder is lowered by the cylinder to engage with the pressure relief valve, and the inside of the detection cylinder is inflated with air through a ventilation pipe on one side to detect whether the sealing ring is leaking.

[0015] 2. By arranging an electric push rod and a pneumatic clamp under the mounting frame, the pressure relief valve passing on the conveyor belt can be grabbed and moved to the bottom of the detection cylinder and above the leakage tester, so as to facilitate the fixation of the pressure relief valve. The test device is arranged on one side of the pressure relief valve production line. The pressure relief valve is moved by the conveyor belt, and the sealing ring is stuck in the card slot outside the pressure relief valve, so that the pressure relief valve can be directly picked up and fixed by the pneumatic clamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the fixed tube and the detection tube of the utility model;

[0018] Figure 3 This is a cross-sectional view of the connection between the fixed tube and the detection tube of the utility model;

[0019] Figure 4 It is a top view of the electric push rod and pneumatic clamp of the utility model;

[0020] In the figure: 1. mounting frame; 2. fixing plate; 3. cylinder; 4. fixing tube; 5. ventilation pipe; 6. electric push rod; 7. pneumatic clamp; 8. anti-skid pad; 9. detection tube; 10. first through hole; 11. bayonet; 12. inclined groove; 13. connecting plate; 14. slide groove; 15. threaded hole; 16. second through hole; 17. fixing bolt. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] See also Figure 1-4 , the utility model provides an embodiment: a sealing ring tightness testing device for a pressure relief valve, comprising a mounting frame 1, the mounting frame 1 is provided with two;

[0023] Also includes:

[0024] A fixing plate 2 is fixedly mounted on the upper front end side of the two mounting frames 1, and the fixing plate 2 is fixed to the upper front end side of the mounting frames 1 by threaded connection, a cylinder 3 is provided at the front end of the fixing plate 2, a fixing tube 4 is provided at the bottom of the cylinder 3, the cylinder 3 drives the fixing tube 4 to move up and down, and the bottom of the fixing tube 4 is open, a detection tube 9 is provided inside the fixing tube 4, and the detection tube 9 is movably engaged inside the fixing tube 4, a ventilation pipe 5 is provided on the outer side of the fixing tube 4, and the ventilation pipe 5 is connected to the inside of the fixing tube 4, a first through hole 10 is provided on the outer side of the detection tube 9, and the first through hole 10 is connected to the ventilation pipe 5.

[0025] The detection cylinder 9 can be replaced. The detection cylinder 9 can be replaced according to the sizes of different pressure relief valves so that it can adapt to pressure relief valves of different sizes. The fixed cylinder 4 is lowered by the cylinder 3 to engage with the pressure relief valve, and the inside of the detection cylinder 9 is inflated with air through the ventilation pipe 5 on one side, so as to detect whether the sealing ring is leaking.

[0026] See also Figure 1 A connecting plate 13 is arranged between the two mounting frames 1, an electric push rod 6 is arranged at the front end of the connecting plate 13, a pneumatic clamp 7 is arranged at the front end of the electric push rod 6, the electric push rod 6 is used to drive the pneumatic clamp 7 to move forward and backward, and the pneumatic clamp 7 can clamp and fix the pressure relief valve.

[0027] See also Figure 4 The inner side of the clamping jaw at the front end of the pneumatic clamp 7 is adhered with an anti-skid pad 8 to improve the anti-skid property of the surface of the clamping jaw.

[0028] See also Figure 2-3A latch 11 is provided on one side of the outer portion of the detection cylinder 9, a slide groove 14 is provided on one side of the inner wall of the fixed cylinder 4, and the latch 11 is slidably engaged in the interior of the slide groove 14. The detection cylinder 9 is positioned when entering the interior of the fixed cylinder 4 through the engagement of the latch 11 and the slide groove 14 to prevent deviation from causing the first through hole 10 to be misaligned with the ventilation pipe 5.

[0029] See also Figure 2 A second through hole 16 is provided at the external front end of the fixing cylinder 4, and a threaded hole 15 is provided at the external front end of the detection cylinder 9. When the detection cylinder 9 is engaged with the fixing cylinder 4, the second through hole 16 is aligned with the threaded hole 15. The detection cylinder 9 and the fixing cylinder 4 are connected and fixed by a fixing bolt 17. The fixing bolt 17 passes through the second through hole 16 and is threadedly connected to the threaded hole 15. The detection cylinder 9 and the fixing cylinder 4 are fixed by the fixing bolt 17.

[0030] See also Figure 3 The bottom of the inner wall of the detection tube 9 is integrally formed with an inclined groove 12 to facilitate the sealing ring and the pressure relief valve to be snapped into the interior of the detection tube 9.

[0031] Working principle: The test device is set next to the conveyor belt of the pressure relief valve production line, the sealing ring is set in the groove on the outer surface of the pressure relief valve, the pressure relief valve is conveyed to the front end of the test device through the conveyor belt, the pneumatic clamp 7 is pushed forward by the electric push rod 6, and the pneumatic clamp 7 clamps and fixes the pressure relief valve, and then the electric push rod 6 is retracted to move the pressure relief valve to the bottom of the detection cylinder 9. At the same time, a leakage tester is installed under the pressure relief valve, and then the fixed cylinder 4 is driven to descend by the cylinder 3 to make the pressure relief valve engage with the inner wall of the detection cylinder 9, so that the sealing ring fits against the inner wall of the detection cylinder 9, and then the ventilation pipe 5 is connected to the air pump, and the air pressure is input into the inside of the detection cylinder 9 through the ventilation pipe 5. The sealing ring is tested by the leakage tester below. If there is airflow passing through the sealing ring, the leakage tester will detect the leakage of the sealing ring through the sensor and give an alarm indication. If there is no leakage, no indication will be given.

[0032] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A sealing ring tightness testing device for a pressure relief valve, comprising a mounting frame (1), wherein two mounting frames (1) are provided; Features: Also includes: A fixing plate (2) is fixedly mounted on the upper front ends of the two mounting frames (1), and the fixing plate (2) is fixed to the upper front ends of the mounting frames (1) by means of a threaded connection. A cylinder (3) is provided at the front end of the fixing plate (2), and a fixing cylinder (4) is provided at the bottom of the cylinder (3). The cylinder (3) drives the fixing cylinder (4) to move up and down, and the bottom of the fixing cylinder (4) is open. A detection cylinder (9) is provided inside the fixing cylinder (4), and the detection cylinder (9) is movably engaged inside the fixing cylinder (4). A ventilation pipe (5) is provided on one side of the outside of the fixing cylinder (4), and the ventilation pipe (5) is connected to the inside of the fixing cylinder (4). A first through hole (10) is provided on one side of the outside of the detection cylinder (9), and the first through hole (10) is connected to the ventilation pipe (5).

2. A sealing ring tightness testing device for a pressure relief valve according to claim 1, characterized in that: A connecting plate (13) is provided between the two mounting frames (1), an electric push rod (6) is provided at the front end of the connecting plate (13), and a pneumatic clamp (7) is provided at the front end of the electric push rod (6).

3. A sealing ring tightness testing device for a pressure relief valve according to claim 2, characterized in that: The inner side of the clamping claw at the front end of the pneumatic clamp (7) is bonded with an anti-slip pad (8).

4. The sealing ring tightness testing device for a pressure relief valve according to claim 1, characterized in that: A latch (11) is provided on one side of the exterior of the detection cylinder (9), a slide groove (14) is provided on one side of the inner wall of the fixing cylinder (4), and the latch (11) is slidably engaged in the interior of the slide groove (14).

5. The sealing ring tightness testing device for a pressure relief valve according to claim 1, characterized in that: The fixing cylinder (4) is provided with a second through hole (16) at the outer front end thereof, the detection cylinder (9) is provided with a threaded hole (15) at the outer front end thereof, and when the detection cylinder (9) and the fixing cylinder (4) are engaged, the second through hole (16) and the threaded hole (15) are aligned, the detection cylinder (9) and the fixing cylinder (4) are connected and fixed by a fixing bolt (17), and the fixing bolt (17) passes through the second through hole (16) and is threadedly connected to the threaded hole (15).

6. A sealing ring tightness testing device for a pressure relief valve according to claim 1, characterized in that: The bottom of the inner wall of the detection cylinder (9) is integrally formed with an inclined groove (12).

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