Safety valve test tool

Abstract

The utility model relates to the technical field of safety ball valves, and discloses a safety valve test tool, which comprises a test valve body, a closed valve cover is arranged at the bottom end of the test valve body, a plurality of fixing studs are uniformly and annularly arranged at the top end of the test valve body, the fixing studs penetrate through the closed valve cover, and the closed valve cover is arranged on the test valve body. According to the utility model, the test valve body is arranged, the closed valve cover is arranged at the top end of the test valve body, and the test valve body and the closed valve cover are fixed through the fixed studs and the fixed nuts, so that the gas storage cavity in the test valve body forms a closed cavity for testing; the air pressure safety test is performed on the test safety valve body, the flexible test of the air pressure of the test safety valve body is facilitated, and the test efficiency of the test safety valve body can be greatly improved and the wasted time can be reduced by uniformly assembling the test safety valve body after the test safety valve body is confirmed to be qualified.

Description

Technical Field

[0001] The utility model relates to the technical field of safety ball valves, in particular to a safety valve testing tool. Background Art

[0002] As an important safety component of oil-free screw compressor, the safety valve plays a role of safety protection in the system. When the system pressure exceeds the specified value, the safety valve opens and discharges part of the gas in the system into the atmosphere, so that the system pressure does not exceed the allowable value, thereby ensuring that the system does not cause accidents due to excessive pressure. Different types of compressors need to be equipped with safety valves of different types and specifications.

[0003] The test method used by the existing safety valve test tooling is to test the entire valve, which is cumbersome to operate, takes a lot of time and has little benefit. In addition, if the safety valve fails, it needs to be replaced and retested from the beginning, which greatly reduces the test efficiency of the safety valve and wastes a lot of time. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a safety valve testing tool, which solves the problem that the testing method used by the existing safety valve testing tool is to test the entire valve, which is cumbersome to operate, takes a lot of time and has little benefit, and when the safety valve fails, it needs to be replaced and retested from the beginning, which greatly reduces the testing efficiency of the safety valve and wastes a lot of time.

[0005] The utility model provides the following technical solution: a safety valve testing tool, comprising a test valve body, a closing valve cover is arranged at the bottom end of the test valve body, a plurality of fixing studs are evenly arranged around the top end of the test valve body, the fixing studs penetrate the closing valve cover, and fixing nuts are arranged at the top ends of the fixing studs;

[0006] An air inlet channel is provided in the middle of the closing valve cover, and a test safety valve body is provided at the top of the air inlet channel, two side screw holes are symmetrically provided on both sides of the closing valve cover, and screw screws are inserted in the side screw holes, an air storage cavity is provided at the top of the test valve body, an air injection channel is provided at the bottom of the test valve body, and the air injection channel is connected with the air storage cavity, a first pressure relief channel is provided on the left side of the test valve body, a second pressure relief channel is provided on the right side of the test valve body, and the first pressure relief channel and the second pressure relief channel are both connected with the air storage cavity, a third pressure relief channel is provided on the rear side of the test valve body, and a fourth pressure relief channel is provided on the front side of the test valve body, and the third pressure relief channel and the fourth pressure relief channel are both connected with the air storage cavity, and the ends of the first pressure relief channel, the second pressure relief channel, the third pressure relief channel and the fourth pressure relief channel are all provided with matching pressure relief channel closing screw plugs.

[0007] Preferred technical solution 1: Two limiting slots are symmetrically provided on both sides of the top of the gas storage cavity, and two limiting plugs are symmetrically provided on both sides of the bottom of the closing valve cover.

[0008] Preferred technical solution 2: the limit plug is inserted into the limit slot, and two side grooves are symmetrically provided on both sides of the bottom end of the closing valve cover.

[0009] Preferred technical solution three: A convex block is provided at the bottom end of the closing valve cover, and the convex block is inserted into the top end of the gas storage cavity.

[0010] This solution can enhance the tightness of the connection between the test valve body and the closing valve cover.

[0011] Preferred technical solution four: the limiting plug cooperates with the limiting slot.

[0012] This solution can make the connection between the test valve body and the closing valve cover more secure.

[0013] Preferred technical solution five: Both sides of the top of the gas storage cavity are inclined to facilitate insertion.

[0014] This solution can make it easier for the bottom end of the closing valve cover to be inserted into the gas storage cavity opened at the top end of the test valve body.

[0015] Compared with the prior art, the utility model provides a safety valve testing tool, which has the following beneficial effects:

[0016] The utility model is provided with a test valve body, and a closing valve cover is provided at the top of the test valve body. The test valve body and the closing valve cover are fixed by means of the provided fixing studs and fixing nuts, so that the air storage cavity in the test valve body forms a closed cavity for testing. By connecting the test safety valve body with the air inlet passage, the test air pressure is injected into the air injection passage, so that the air pressure enters the air storage cavity through the air injection passage, and then enters the test safety valve body through the air inlet passage, so as to perform a safety test of the air pressure on the test safety valve body. The first pressure relief passage, the second pressure relief passage, the third pressure relief passage and the fourth pressure relief passage provided on the test valve body can controllably adjust the air pressure in the air storage cavity, which is beneficial to the flexible testing of the air pressure of the test safety valve body. By uniformly assembling the test safety valve body after confirming that it is qualified, the testing efficiency of the test safety valve body can be greatly improved, and the wasted time can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the external structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the main cross-section of the structure of the utility model;

[0019] Figure 3 For the utility model Figure 2 A magnified view of the structure of the middle limit slot;

[0020] Figure 4 For the utility model Figure 2 Schematic diagram of top view cross section of the first pressure relief channel.

[0021] In the figure:

[0022] 1. Test valve body; 2. Close valve cover; 3. Fix stud; 4. Fix nut; 5. Air inlet channel; 6. Test safety valve body; 7. Side screw hole; 8. Screw screw; 9. Air storage cavity; 10. Air injection channel; 11. First pressure relief channel; 12. Second pressure relief channel; 13. Third pressure relief channel; 14. Fourth pressure relief channel; 15. Pressure relief channel closing screw plug; 16. Limit slot; 17. Limit plug; 18. Side groove. DETAILED DESCRIPTION

[0023] See also Figure 1-4 The safety valve testing tool comprises a test valve body 1. A closing valve cover 2 is arranged at the bottom of the test valve body 1. A plurality of fixing studs 3 are evenly arranged around the top of the test valve body 1. The fixing studs 3 penetrate the closing valve cover 2. Fixing nuts 4 are arranged at the tops of the fixing studs 3.

[0024] An air inlet channel 5 is provided in the middle of the closing valve cover 2, and a test safety valve body 6 is arranged at the top of the air inlet channel 5. Two side screw holes 7 are symmetrically provided on both sides of the closing valve cover 2, and screw screws 8 are inserted in the side screw holes 7. An air storage cavity 9 is provided at the top of the test valve body 1, and an air injection channel 10 is provided at the bottom end of the test valve body 1. The air injection channel 10 is connected with the air storage cavity 9, and a first pressure relief channel 11 is provided on the left side of the test valve body 1.

[0025] A second pressure relief channel 12 is opened on the right side of the test valve body 1, and the first pressure relief channel 11 and the second pressure relief channel 12 are both connected to the gas storage cavity 9. A third pressure relief channel 13 is opened on the rear side of the test valve body 1, and a fourth pressure relief channel 14 is opened on the front side of the test valve body 1. The third pressure relief channel 13 and the fourth pressure relief channel 14 are both connected to the gas storage cavity 9.

[0026] The ends of the first pressure relief channel 11, the second pressure relief channel 12, the third pressure relief channel 13 and the fourth pressure relief channel 14 are all provided with corresponding pressure relief channel closing screw plugs 15, two limit slots 16 are symmetrically provided on both sides of the top of the gas storage cavity 9, two limit plugs 17 are symmetrically provided on both sides of the bottom end of the closing valve cover 2, the limit plugs 17 are inserted in the limit slots 16, and two side grooves 18 are symmetrically provided on both sides of the bottom end of the closing valve cover 2.

[0027] Embodiment 2: The difference between this embodiment and embodiment 1 is that a protrusion is provided at the bottom end of the closing valve cover 2 , and the protrusion is inserted into the top end of the gas storage cavity 9 .

[0028] Strengthen the connection tightness between the test valve body 1 and the closing valve cover 2.

[0029] Embodiment 3: The difference between this embodiment and embodiment 1 is that the limiting plug block 17 cooperates with the limiting slot 16 .

[0030] The connection between the test valve body 1 and the closing valve cover 2 is made more secure.

[0031] Embodiment 4: The difference between this embodiment and embodiment 1 is that the two sides of the top of the gas storage cavity 9 are inclined to facilitate insertion.

[0032] This makes it easier for the bottom end of the closing valve cover 2 to be inserted into the gas storage cavity 9 opened at the top end of the test valve body 1 .

[0033] In this embodiment, since the testing method used by the existing safety valve testing tool is a test of the entire valve, the operation is cumbersome, time-consuming and has little benefit, and if the safety valve fails, it needs to be replaced and retested from the beginning, which greatly reduces the testing efficiency of the safety valve and wastes a lot of time.

[0034] In summary, in the specific implementation, when the user needs to test the test safety valve body 6, the user first needs to place the closing valve cover 2 on the top of the test valve body 1, so that the fixing stud 3 passes through the closing valve cover 2, and the fixing nut 4 is sleeved on the fixing stud 3, thereby fixing the test valve body 1 and the closing valve cover 2 to be connected. A limiting plug 17 is provided on the bottom side of the closing valve cover 2. When the test valve body 1 and the closing valve cover 2 are engaged and fixed, the limiting plug 17 can be inserted in the limiting slot 16, thereby further strengthening the connection firmness between the test valve body 1 and the closing valve cover 2.

[0035] As for the first pressure relief channel 11, the second pressure relief channel 12, the third pressure relief channel 13 and the fourth pressure relief channel 14 arranged around the test valve body 1, they are all blocked and closed by the pressure relief channel closing screw plug 15, and the top of the air intake channel 5 is connected to the test safety valve body 6. Before testing the valve as a whole, the safety valve body 6 is tested separately first, and then assembled uniformly after confirmation of being qualified, thereby effectively improving the testing efficiency of the test safety valve body 6 and greatly reducing the waste of time. When the test safety valve body 6 is connected to the air intake channel 5 at the top of the test valve body 1, it is necessary to ensure that the front of the air intake channel 5 is facing upward, thereby ensuring that the pressure injected into the air storage cavity 9 through the air injection channel 10 is at the highest pressure position.

[0036] After the air storage cavity 9 is pressurized to a specified pressure value range, when the pressure begins to be detected in the test safety valve body 6, the test is performed until the pressure value displayed on the test safety valve body 6 becomes constant, and the seal is maintained. At this time, the pressure relief channel closing screw 15 at the first pressure relief channel 11 or the second pressure relief channel 12 is screwed to adjust the air pressure in the air storage cavity 9, so that the air pressure during the test can be flexibly adjusted, and various pressure parameters adapted to the test safety valve body 6 can be tested more conveniently, thereby facilitating user use, improving test efficiency, and reducing wasted time.

Claims

1. A safety valve test fixture, comprising a test valve body (1), characterized in that: The bottom end of the test valve body (1) is provided with a closing valve cover (2), and the top end of the test valve body (1) is evenly provided with a plurality of fixing studs (3), the fixing studs (3) penetrate the closing valve cover (2), and the top ends of the fixing studs (3) are all provided with fixing nuts (4); An air inlet passage (5) is provided in the middle of the closing valve cover (2), a test safety valve body (6) is provided at the top of the air inlet passage (5), two side screw holes (7) are symmetrically provided on both sides of the closing valve cover (2), a screw rod (8) is inserted into each of the side screw holes (7), an air storage cavity (9) is provided at the top of the test valve body (1), an air injection passage (10) is provided at the bottom of the test valve body (1), the air injection passage (10) is communicated with the air storage cavity (9), a first pressure relief passage (11) is provided on the left side of the test valve body (1), and a second pressure relief passage (11) is provided on the right side of the test valve body (1). A pressure relief channel (12), the first pressure relief channel (11) and the second pressure relief channel (12) are both connected to the gas storage cavity (9), a third pressure relief channel (13) is provided on the rear side of the test valve body (1), a fourth pressure relief channel (14) is provided on the front side of the test valve body (1), the third pressure relief channel (13) and the fourth pressure relief channel (14) are both connected to the gas storage cavity (9), and the ends of the first pressure relief channel (11), the second pressure relief channel (12), the third pressure relief channel (13) and the fourth pressure relief channel (14) are all provided with matching pressure relief channel closing screw plugs (15).

2. The safety valve testing tool according to claim 1, characterized in that: Two limit slots (16) are symmetrically provided on both sides of the top end of the gas storage cavity (9), and two limit plugs (17) are symmetrically provided on both sides of the bottom end of the closing valve cover (2).

3. The safety valve testing tool according to claim 2, characterized in that: The limiting plug block (17) is inserted into the limiting slot (16), and two side grooves (18) are symmetrically provided on both sides of the bottom end of the closing valve cover (2).

4. The safety valve testing tool according to claim 3 is characterized in that: The bottom end of the closing valve cover (2) is provided with a protrusion, and the protrusion is inserted into the top end of the gas storage cavity (9).

5. The safety valve testing tool according to claim 4, characterized in that: The limiting insert block (17) cooperates with the limiting slot (16).

6. The safety valve testing tool according to claim 5, characterized in that: Both sides of the top of the gas storage cavity (9) are in an inclined shape for easy insertion.

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