A diving breathing apparatus tester

Abstract

The present invention belongs to the technical field of respirator detection, and specifically relates to a submersible respirator tester, including a cabinet, a head mold for testing is arranged on the cabinet, a low-pressure booster pump is connected to a diaphragm pressure gauge through a check valve and an H solenoid valve, and a head mold pipeline is connected between the check valve and the H solenoid valve; a pneumatic respirator simulating artificial respiration, a negative pressure pump, a low-pressure booster pump and a control circuit are arranged inside the cabinet. The present invention can measure the air tightness of the mask, the flexibility of the air supply hose, the outlet pressure of the first-stage pressure reducing valve, the breathing resistance of the air supply regulator, the air supply flow rate, and the performance of the exhaust valve at one time, and the operation is convenient; the system is stable, ensuring the safety of the tested product; the operation interface is simple, the detection data is intuitive, and the workload of the operator is reduced; the built-in pneumatic respirator simulates the breathing work of the artificial lung and realizes the quota adjustment of the vital capacity.

Description

Technical Field

[0001] The invention relates to a diving breathing apparatus tester, belonging to the technical field of breathing apparatus detection. Background Art

[0002] Respirators require factory inspection, patrol inspection, and pre-use inspection. Due to limited conditions, such equipment is generally lacking. Once the technical parameters of the respirator change and fail to meet the requirements, the diving and escape effects may be greatly reduced, and even the life of the user may be endangered. Respirators have a comprehensive testing station to test various technical indicators before leaving the factory. During maintenance and inspection, professional personnel must be trained before use. Each component must be assembled and disassembled many times during testing, which affects the shape of the components and is cumbersome to operate. Therefore, a diving respirator tester is applied here to solve the above problems. Summary of the invention

[0003] In view of the above deficiencies in the prior art, the technical problem to be solved by the present invention is: to overcome the deficiencies in the prior art and provide a diving breathing apparatus tester that integrates various technical indicator detection functions of the breathing apparatus, has a simple operation interface, intuitive detection data, and reduces the operator's workload.

[0004] The submersible breathing apparatus tester of the present invention comprises a cabinet, a head mold for testing is arranged on the cabinet, a low-pressure booster pump is connected to a diaphragm box pressure gauge through a check valve and an H solenoid valve, and a head mold pipeline is connected between the check valve and the H solenoid valve; a pneumatic ventilator simulating artificial respiration, a negative pressure pump, a low-pressure booster pump and a control circuit are arranged inside the cabinet; the control circuit comprises a bottle valve seat interface arranged on the cabinet, the bottle valve seat interface is connected to a high-pressure gas source interface through a needle valve, and a gas source pressure reducer and a gas source pressure gauge are arranged between the needle valve and the high-pressure gas source interface; a medium-pressure pipe interface and a medium-pressure pipe thread are arranged on the cabinet Interface, a medium-pressure pressure gauge and A solenoid valve are arranged between the medium-pressure pipe interface and the medium-pressure pipe threaded interface; the cabinet is also provided with an air supply valve interface, and a parallel negative pressure branch, a flow branch and a locking branch are connected between the air supply valve interface and the diaphragm box pressure gauge; a B solenoid valve is arranged on the locking branch; the negative pressure branch is connected to the negative pressure pump by the C solenoid valve, and is connected to the diaphragm box pressure gauge in parallel through the D solenoid valve; the flow branch is connected to the flow meter through the E solenoid valve and the F solenoid valve in sequence; a pneumatic ventilator branch is connected in parallel between the E solenoid valve and the F solenoid valve; a G solenoid valve is arranged on the pneumatic ventilator branch.

[0005] The gas source pressure gauge, medium pressure gauge, diaphragm box pressure gauge, needle valve, gas source pressure reducer, check valve and flow meter described in the present invention are all arranged on the front side of the cabinet.

[0006] A high-pressure gas source interface and a low-pressure gas source interface are provided on the back of the cabinet of the present invention, and the low-pressure gas source interface is connected to a pneumatic ventilator.

[0007] The A solenoid valve and the E solenoid valve described in the present invention are both normally open solenoid valves; the B solenoid valve, the C solenoid valve, the D solenoid valve, the F solenoid valve and the H solenoid valve are all normally closed solenoid valves.

[0008] The cabinet described in the present invention is also provided with an air pump switch button K1, a mask air tightness test switch K2, a first-level outlet pressure test switch K3, a breathing resistance test switch K4, an air supply flow test switch K5, an exhaust valve performance detection switch K6, and a power switch K7; the negative pressure pump is provided with a throttle valve.

[0009] The cabinet body of the present invention is provided with a door body, which is rotatably connected to the cabinet body through a hinge, so as to facilitate installation and later maintenance.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] The submersible breathing apparatus tester of the present invention can measure the air tightness of the mask, the flexibility of the air supply hose, the outlet pressure of the first-stage pressure reducing valve, the breathing resistance of the air supply regulator, the air supply flow rate, and the performance of the exhaust valve at one time, and is easy to operate; the system is stable, ensuring the safety of the tested product; the operation interface is simple, the test data is intuitive, and the operator's workload is reduced; the built-in pneumatic ventilator simulates the breathing work of an artificial lung to achieve a quota adjustment of vital capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the present invention;

[0013] Figure 2 It is a connection diagram of the present invention.

[0014] In the figure: 1. Cabinet; 2. Air source pressure gauge; 3. Medium pressure pressure gauge; 4. Diaphragm box pressure gauge; 5. Bottle valve seat interface; 6. Medium pressure pipe interface; 7. Medium pressure pipe threaded interface; 8. Air supply valve interface; 9. Flow meter; 10. Head mold; 11. Needle valve; 12. Air source pressure reducer; 13. Throttle valve; 14. Door body; 15. Low pressure booster pump; 16. Pneumatic ventilator; 17. Negative pressure pump; 18. A solenoid valve; 19. B solenoid valve; 20. C solenoid valve; 21. D solenoid valve; 22. E solenoid valve; 23. F solenoid valve; 24. G solenoid valve; 25. H solenoid valve; 26. Check valve; 27. Bottle valve; 28. Respirator pressure reducer; 29. ​​Medium pressure pipe; 30. Air supply valve. DETAILED DESCRIPTION

[0015] The present invention will be further described below in conjunction with embodiments:

[0016] like Figures 1-2 As shown, the submersible breathing apparatus tester of the present invention comprises a cabinet 1, on which a head mold 10 for testing is arranged, a low-pressure booster pump 15 is connected to a diaphragm pressure gauge 4 through a check valve 26 and an H solenoid valve 25, and a pipeline of the head mold 10 is connected between the check valve 26 and the H solenoid valve 25; a pneumatic ventilator 16 simulating artificial respiration, a negative pressure pump 17, a low-pressure booster pump 15 and a control circuit are arranged inside the cabinet 1; the control circuit comprises a bottle valve seat interface 5 arranged on the cabinet 1, the bottle valve seat interface 5 is connected to a high-pressure gas source interface through a needle valve 11, and a gas source pressure reducer 12 and a gas source pressure gauge 2 are arranged between the needle valve 11 and the high-pressure gas source interface; a medium-pressure pipe interface 6 and a medium-pressure pipe interface 1 are arranged on the cabinet 1. A medium-pressure pressure gauge 3 and an A solenoid valve 18 are arranged between the threaded interface 7, the medium-pressure pipe interface 6 and the medium-pressure pipe threaded interface 7; the cabinet 1 is also provided with an air supply valve interface 8, and a negative pressure branch, a flow branch and a locking branch are connected in parallel between the air supply valve interface 8 and the diaphragm box pressure gauge 4; a B solenoid valve 19 is arranged on the locking branch; the negative pressure branch is connected to the negative pressure pump 17 by the C solenoid valve 20, and is connected in parallel to the diaphragm box pressure gauge 4 through the D solenoid valve 21; the flow branch is connected to the flow meter 9 through the E solenoid valve 22 and the F solenoid valve 23 in sequence, and is connected in parallel to the pneumatic respirator 16 between the E solenoid valve 22 and the F solenoid valve 23; a G solenoid valve 24 is arranged on the connecting pipeline of the pneumatic respirator 16.

[0017] The air source pressure gauge 2, the medium pressure pressure gauge 3, the diaphragm pressure gauge 4, the needle valve 11, the air source pressure reducer 12, the check valve 26, and the flow meter 9 are all arranged on the front of the cabinet 1; the back of the cabinet 1 is provided with a high-pressure air source interface and a low-pressure air source interface, and the low-pressure air source interface is connected to the pneumatic ventilator 16.

[0018] The A solenoid valve 18 and the E solenoid valve 22 are both normally open solenoid valves; the B solenoid valve 19, the C solenoid valve 20, the D solenoid valve 21, the F solenoid valve 23 and the H solenoid valve 25 are all normally closed solenoid valves.

[0019] The cabinet 1 is also provided with an air pump switch button K1, a mask air tightness test switch K2, a primary outlet pressure test switch K3, a breathing resistance test switch K4, an air supply flow test switch K5, an exhaust valve performance detection switch K6, and a power switch K7; a throttle valve 13 is provided on the negative pressure pump 17; a door body 14 is provided on the cabinet 1, which is rotatably connected to the cabinet 1 through a hinge, which is convenient for installation and later maintenance

[0020] Working principle of the present invention:

[0021] Preparation work before testing: connect the high-pressure gas source to the high-pressure gas source interface; connect the low-pressure gas source to the low-pressure gas source interface; connect the mask to the head mold 10; connect the bottle valve 27 to the bottle valve seat interface 5, and connect the bottle valve 27 to the respirator reducer 28 to be tested; remove the medium-pressure pipe 29 of the respirator reducer 28, connect the threaded end of the medium-pressure pipe 29 to the medium-pressure pipe threaded interface 7 on the cabinet 1, and connect the medium-pressure pipe interface on the respirator reducer 28 to the medium-pressure pipe interface 6 on the cabinet 1 with a special pipe; connect the air supply valve 30 end on the medium-pressure pipe 29 to the air supply valve interface 8 on the cabinet 1 with a transfer tube; turn on the power switch K7, and adjust the pneumatic respirator 16 to a flow rate of 80L / min and a breathing frequency of 15 times / min.

[0022] Test starts, step 1: perform mask airtightness test

[0023] Open the mask air tightness test switch K2, turn on the H solenoid valve 25, press the air pump switch button K1, the low-pressure booster pump 15 starts to work to provide pressure, the diaphragm box pressure gauge 4 to 4.7±0.5KPa, release the air pump switch button K1, maintain the pressure for one minute, observe whether the pressure value of the diaphragm box pressure gauge 4 drops, and the pressure value is not more than 40Pa for qualified; close the mask air tightness test switch K2.

[0024] Step 2: Perform a high pressure hose air tightness flexibility test

[0025] Connect one end of the high-pressure hose to be tested to the respirator pressure reducer 28, and the other end of the high-pressure hose to a pressure gauge. Coil the high-pressure hose and immerse it in water. Open the needle valve 11, open the bottle valve 27, and let air at the rated working pressure flow into the high-pressure hose. Maintain the pressure for five minutes and observe whether the high-pressure hose bubbles. If there is no bubbling, it is qualified. Close the needle valve 11, close the bottle valve 27, and remove the high-pressure hose.

[0026] Step 3: Test the outlet pressure of the first stage pressure reducing valve

[0027] Open the needle valve 11, open the bottle valve 27, adjust the gas source pressure reducer 12, make the high-pressure gas source pressure display on the gas source pressure gauge 2 as 3MPa, open the first-level outlet pressure test switch K3, which controls the A solenoid valve 18 to be closed, observe the change in the value of the medium-pressure pressure gauge 3, and it is qualified within the range of 0.9+0.1MPa; continue to adjust the gas source pressure reducer 12, make the high-pressure gas source pressure display on the gas source pressure gauge 2 as 18~20MPa, observe the change in the value of the medium-pressure pressure gauge 3, and it is qualified within the range of 0.9±0.1MPa; close the first-level outlet pressure test switch K3.

[0028] Step 4: Perform a Supplied Air Regulator Breathing Resistance Test

[0029] Open the needle valve 11 and adjust the gas source pressure reducer 12 so that the high-pressure gas source pressure is displayed on the gas source pressure gauge 2 as above 10MPa and the medium-pressure pressure gauge 3 displays 0.9±0.1MPa. Turn on the breathing resistance test switch K4, which controls the B solenoid valve 19 and the G solenoid valve 24 to be connected, so that the pneumatic ventilator 16 is connected and the locking branch is connected; observe the change in the value of the diaphragm box pressure gauge 4, and the value of the diaphragm box pressure gauge 4 is less than or equal to ±500Pa to be qualified; close the breathing resistance test switch K4.

[0030] Step 5: Perform a gas supply flow test

[0031] Open the needle valve 11 and adjust the gas source pressure reducer 12 to make the high-pressure gas source pressure displayed on the gas source pressure gauge 2 be 12-14MPa. During the test, the medium pressure displayed on the medium pressure gauge 3 is less than or equal to 0.3MPa. Turn on the gas supply flow test switch K5, which controls the F solenoid valve 23 to be turned on, and the flow branch to be turned on. Observe the changes in the flow meter 9 value. The gas supply flow rate is greater than or equal to 600L / min to be qualified; close the gas supply flow test switch K5.

[0032] Step 6: Perform exhaust valve performance test

[0033] Block the one-way diaphragm of the secondary pressure reducing valve on the air supply valve 30, open the exhaust valve performance detection switch K6, which controls the C solenoid valve 20 and the D solenoid valve 21 to open, the A solenoid valve 18 and the E solenoid valve 22 to close, the negative pressure branch is connected, and the negative pressure pump 17 starts to work to provide negative pressure, so that the reverse pressure of the diaphragm box pressure gauge 4 shows 0.5MPa, maintain the pressure for one minute, and observe the air tightness of the exhaust valve; close the exhaust valve performance detection switch K6, and turn off the power switch K7.

[0034] The present invention can measure the air tightness of the mask, the air tightness and flexibility of the air supply hose, the outlet pressure of the first-stage pressure reducing valve, the breathing resistance of the air supply regulator, the air supply flow, the exhaust valve performance and the like at one time, and the operation is convenient; the system is stable, ensuring the safety of the tested product; the operation interface is simple, the test data is intuitive, and the operator's workload is reduced; the built-in pneumatic ventilator 16 simulates the breathing work of the artificial lung to achieve the quota adjustment of the vital capacity.

Claims

1. A diving breathing apparatus tester, characterized in that: The invention comprises a cabinet (1), on which a head mold (10) for testing is arranged, a low-pressure booster pump (15) is connected to a diaphragm pressure gauge (4) through a check valve (26) and an H solenoid valve (25), and a pipeline of the head mold (10) is connected between the check valve (26) and the H solenoid valve (25); a pneumatic ventilator (16) simulating artificial respiration, a negative pressure pump (17), a low-pressure booster pump (15) and a control circuit are arranged inside the cabinet (1); the control circuit comprises a bottle valve seat interface (5) arranged on the cabinet (1), the bottle valve seat interface (5) is connected to a high-pressure gas source interface through a needle valve (11), and a gas source pressure reducer (12) and a gas source pressure gauge (2) are arranged between the needle valve (11) and the high-pressure gas source interface; a medium-pressure pipe interface (6) and a medium-pressure pipe threaded interface (7) are arranged on the cabinet (1). A medium-pressure pressure gauge (3) and an A solenoid valve (18) are arranged between the medium-pressure pipe interface (6) and the medium-pressure pipe threaded interface (7); the cabinet (1) is also provided with an air supply valve interface (8), and a negative pressure branch, a flow branch and a locking branch are connected in parallel between the air supply valve interface (8) and the diaphragm pressure gauge (4); a B solenoid valve (19) is arranged on the locking branch; the negative pressure branch is connected to the negative pressure pump (17) by the C solenoid valve (20), and is connected in parallel to the diaphragm pressure gauge (4) through the D solenoid valve (21); the flow branch is connected to the flow meter (9) by sequentially passing through the E solenoid valve (22) and the F solenoid valve (23); a pneumatic ventilator (16) is connected in parallel between the E solenoid valve (22) and the F solenoid valve (23); a G solenoid valve (24) is arranged on the connecting pipeline of the pneumatic ventilator (16); A high-pressure gas source interface and a low-pressure gas source interface are provided on the back of the cabinet (1), and the low-pressure gas source interface is connected to a pneumatic ventilator (16); The A solenoid valve (18) and the E solenoid valve (22) are both normally open solenoid valves; the B solenoid valve (19), the C solenoid valve (20), the D solenoid valve (21), the F solenoid valve (23) and the H solenoid valve (25) are both normally closed solenoid valves.

2. The underwater breathing apparatus tester according to claim 1, characterized in that: The gas source pressure gauge (2), the medium pressure gauge (3), the diaphragm pressure gauge (4), the needle valve (11), the gas source pressure reducer (12), the check valve (26), and the flow meter (9) are all arranged on the front side of the cabinet (1).

3. The underwater breathing apparatus tester according to claim 1, characterized in that: The cabinet (1) is also provided with an air pump switch button K1, a mask air tightness test switch K2, a primary outlet pressure test switch K3, a breathing resistance test switch K4, an air supply flow test switch K5, an exhaust valve performance detection switch K6, and a power switch K7.

4. The underwater breathing apparatus tester according to claim 1, characterized in that: The negative pressure pump (17) is provided with a throttle valve (13).

5. The underwater breathing apparatus tester according to claim 1, characterized in that: The cabinet body (1) is provided with a door body (14) which is rotatably connected to the cabinet body (1) via a hinge.

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