CN219200744U - Positive pressure type fire air respirator valve air tightness detection equipment - Google Patents

Abstract

The application relates to the technical field of valve detection, in particular to positive pressure type fire-fighting air respirator valve air tightness detection equipment, which comprises a frame, wherein a detection box, an air storage tank and an air pressure pump are arranged on the frame, a plurality of vent pipes and a mounting rack for mounting a valve to be detected are arranged in the detection box, every two vent pipes are arranged into a group of detection stations, each vent pipe is communicated with the air storage tank, and each vent pipe is sequentially provided with an opening and closing valve, a one-way valve and a pressure gauge along the flow direction of detected air; the two vent pipes in each group are respectively communicated with an air inlet pipe or an air outlet pipe of the valve to be tested. The air inlet pipe and the air outlet pipe of the valve to be detected can be simultaneously connected into the detection passage for air tightness detection during detection, and the valve is not required to be disassembled and assembled for multiple times, so that the detection step is simpler, and the detection efficiency is improved.

Description

Positive pressure type fire air respirator valve air tightness detection equipment

Technical Field

The application relates to the technical field of valve detection, in particular to positive pressure type fire air respirator valve air tightness detection equipment.

Background

The positive pressure fire-fighting air respirator is a self-contained open air respirator, is provided with a full face mask, a high-strength backboard and a high-pressure air cylinder, and meanwhile, the air supply device is also provided with a novel air supply valve with stable performance, so that fire fighters and rescue workers can be used in anoxic environments such as fire fighting, rescue and the like, and toxic gas is prevented from being inhaled. Because air respirators need to be isolated from the outside air, the tightness of the components, such as the valves, is critical, so that the valves often need to be tested for tightness.

The utility model discloses a valve air tightness detection device, which is disclosed by the utility model and comprises a pneumatic pump, an air storage tank, a bracket and a detection air cavity, wherein the air tightness detection device is used for detecting the air tightness of a valve, and a pressure gauge is connected above the air storage tank in a sealing manner; the pneumatic pump, the air storage tank and the detection air cavity are mutually communicated, and a detection platform which is used for installing a valve and is communicated with the interior of the valve is arranged on the detection air cavity. The pneumatic pump can pump the gas in the gas holder to detect air cavity and valve inside in proper order, and accessible observation manometer reads the book and judges whether there is the gas leakage phenomenon this moment to detect whether the valve gas tightness is good.

The valve generally comprises a valve body, a valve core, an air inlet pipe and an air outlet pipe, and the valve core can control the air flow between the air inlet pipe and the air outlet pipe. When the related technology is adopted for air tightness detection, the detection platform can only be communicated with one of the pipelines of the air inlet pipe or the air outlet pipe for detection. When the air inlet pipe and the air outlet pipe all need to detect the air tightness, the valve needs to be disassembled and assembled for many times, so that the detection steps are more, and the detection efficiency is affected.

Disclosure of Invention

The application provides a malleation formula fire control air respirator valve gas tightness check out test set for when the valve that awaits measuring detects, its intake pipe and outlet duct link into the detection passageway simultaneously and detect the gas tightness, need not many times dismouting valve, thereby make the detection step simpler, promote detection efficiency.

The application provides a positive pressure fire control air respirator valve gas tightness check out test set adopts following technical scheme:

the positive pressure type fire-fighting air respirator valve air tightness detection device comprises a frame, wherein a detection box, an air storage tank and an air pressure pump are arranged on the frame, a plurality of vent pipes and a mounting rack for mounting a valve to be detected are arranged in the detection box, each two vent pipes are provided with a group of detection stations, each vent pipe is communicated with the air storage tank, and each vent pipe is sequentially provided with an opening and closing valve, a one-way valve and a pressure gauge along the flow direction of detected air; the two vent pipes in each group are respectively communicated with an air inlet pipe or an air outlet pipe of the valve to be tested.

By adopting the technical scheme, an operator can detect the air tightness by adopting the following method: firstly, two vent pipes on the same group of detection stations are respectively communicated with an air inlet pipe and an air outlet pipe of a valve to be detected; then the valve core of the valve to be tested is in a closed state, and the detection gas in the gas storage tank is driven to pass through the two vent pipes and simultaneously circulate to the gas inlet pipe and the gas outlet pipe of the valve to be tested, at the moment, whether the two pressure gauges generate reading changes is observed, if the reading of one or the two pressure gauges changes, the gas tightness of the gas inlet pipe or the gas outlet pipe corresponding to the changing pressure gauge is poor, the gas inlet pipe or the gas outlet pipe can be judged to be defective, and if the reading does not change, the gas tightness of the gas inlet pipe and the gas outlet pipe is good, and the next detection is carried out; and the next step of detection is that the valve core of the valve to be detected is adjusted from a closed state to a starting state, whether the reading of the pressure gauge changes or not is observed, if the reading changes, the air tightness of the valve body and the valve core is poor, and if the reading does not change, the air tightness of the valve body and the valve core is good.

When an operator detects the air tightness through the method, the air inlet pipe and the air outlet pipe of the same valve are respectively communicated with the air pipe before detection, and then the air tightness of the air inlet pipe, the air outlet pipe and the valve body can be detected respectively without dismounting the valve for multiple times, so that the detection step is simpler, and the detection efficiency is improved.

Optionally, the detection case is inside to be set up to the cavity, and fixed intercommunication has inlet tube and drain pipe on the lateral wall of detection case, simultaneously still be provided with the actuating mechanism that is used for immersing the valve that awaits measuring under water in the detection case.

Through adopting above-mentioned technical scheme for the valve can submerge under water when carrying out the detection of ventilating, thereby make operating personnel can assist judging whether the gas tightness of valve is good according to whether the bubble phenomenon is produced in the detection process of ventilating in water, also can estimate the concrete position that the gas tightness is bad according to the position that produces the bubble, make the gas tightness detect more conveniently.

Optionally, the actuating mechanism is including fixed a plurality of actuating cylinder that set up in the detection case, a plurality of actuating cylinder's flexible direction is all vertical setting to a plurality of actuating cylinder's flexible end simultaneously with mounting bracket fixed connection.

By adopting the technical scheme, when the driving cylinder is in a contracted state, the mounting frame is positioned on water, and an operator can mount the valve to be tested on the mounting frame at the moment, so that the probability of water entering the valve to be tested during mounting is reduced; can drive the mounting bracket and follow vertical direction downwardly moving when the actuating cylinder extension to realize immersing the mounting bracket under water in order to carry out the gas tightness and detect.

Optionally, the vent pipe is fixedly connected to the mounting frame, and the vent pipe can also be immersed under water.

Through adopting above-mentioned technical scheme, when actuating mechanism drives the mounting bracket and moves down, not only can be with the valve that awaits measuring under water, also can be with the breather pipe submerge under water to when the valve that awaits measuring carries out the detection of ventilating, also can observe the breather pipe and produce the gas leakage phenomenon, if there is the bubble to emit in breather pipe department, then the breather pipe has the damage, thereby make operating personnel can in time observe and judge whether detection device gas tightness such as breather pipe is good, thereby be favorable to promoting the accuracy of testing result.

Optionally, one end of the vent pipe facing the valve to be tested is fixedly communicated with a second hose, one end of the second hose, which is far away from the vent pipe, is fixedly communicated with a connector which can be matched and connected with the valve to be tested, and the cross-sectional area of the connector is larger than that of the second hose; the mounting rack is fixedly provided with a plurality of clamping plates, a plurality of arc-shaped grooves for placing a second hose are formed in the clamping plates, and the connector can be abutted to the side wall, facing the valve to be tested, of the clamping plates.

Through adopting above-mentioned technical scheme, when the connector is not connected with the valve that awaits measuring, the second hose can be placed in the arc wall, and the second hose can drop naturally because of its own gravity simultaneously, can be for the connector a power of keeping away from the valve direction that awaits measuring this moment to drive connector butt in the cardboard lateral wall, with connector joint in proper order on the cardboard, reduce the connector and fall into the probability that leads to the inside water intaking of second hose in aquatic, it is more convenient to take the connector when being favorable to the next detection, also is favorable to promoting the accuracy of testing result.

Optionally, a first clamping plate is fixed on the mounting frame, a second clamping plate is hinged to the end part of the first clamping plate, clamping grooves are formed in the opposite side walls of the first clamping plate and the second clamping plate, and any part in an air inlet pipe or an air outlet pipe of the valve to be tested can be clamped between the two clamping grooves; and the end part of the first clamping plate far away from the hinged end is provided with a connecting part which can be detachably connected with the free end of the second clamping plate.

Through adopting above-mentioned technical scheme, when intake pipe or outlet duct of valve that awaits measuring is located before two clamping grooves, the free end of reuse connecting portion connection first splint and second splint to keep the angle between first splint and the second splint inconvenient, thereby realize the fixed to the valve that awaits measuring, reduce the valve position that awaits measuring and remove and lead to connecting the probability of infirm in the testing process, be favorable to promoting the accuracy of testing result.

Optionally, the connecting portion includes the snap ring of articulating in first splint and a plurality of fixture blocks that are fixed in the second splint, and a plurality of the fixture blocks are evenly arranged along the direction of rotation of second splint, the snap ring can the lock joint on arbitrary fixture block.

Through adopting above-mentioned technical scheme, can restrict the motion trend that the first splint was kept away from to the second splint when snap ring and fixture block looks lock joint each other to realized being connected between first splint and the second splint free end, be favorable to fixed valve that awaits measuring.

Optionally, a rubber layer is fixedly arranged on the inner wall of the clamping groove.

By adopting the technical scheme, the physical damage of the air inlet pipe or the air outlet pipe of the valve to be tested is reduced.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when in detection, the air inlet pipe and the air outlet pipe of the same valve are respectively communicated with one air pipe before detection, and then the air tightness of the air inlet pipe, the air outlet pipe and the valve body can be respectively detected without dismounting the valve for multiple times, so that the detection steps are simpler, and the detection efficiency is improved;

2. the valve to be tested can be immersed under water when ventilation detection is carried out, so that an operator can assist in judging whether the air tightness of the valve is good according to whether the air bubble phenomenon is generated in the water in the ventilation detection process, and can estimate the specific position with poor air tightness according to the position where the air bubble is generated, so that the air tightness detection is more convenient;

3. when the valve to be detected is immersed in water for ventilation detection, the vent pipe for detection can also be immersed in water, so that operators can timely observe whether the vent pipe generates a bubble phenomenon to judge whether the air tightness of the detection devices such as the vent pipe is good, and the accuracy of detection results is improved.

Drawings

Fig. 1 is a schematic view of a valve structure of a positive pressure type fire air respirator of the related art.

Fig. 2 is an overall diagram of an embodiment of the present application.

Fig. 3 is a schematic view of the structure of the mounting frame and the components mounted thereon according to the embodiment of the present application.

Fig. 4 is a schematic structural view of a clamping mechanism according to an embodiment of the present application.

Fig. 5 is an enlarged view at a in fig. 4.

Reference numerals illustrate: 101. a valve body; 102. an air inlet pipe; 103. an air outlet pipe; 104. a valve body switch; 2. a gas storage tank; 3. a pneumatic pump; 4. a frame; 5. an air supply pipe; 6. a detection box; 7. a mounting frame; 8. a vent pipe; 9. a clamping mechanism; 10. a first hose; 11. a second hose; 12. opening and closing the valve; 13. a one-way valve; 14. a pressure gauge; 15. an evacuation tube; 16. an evacuation valve; 17. a water inlet pipe; 18. a drain pipe; 19. a driving cylinder; 20. a first clamping plate; 21. a second clamping plate; 22. a clamping groove; 23. a clasp; 24. a clamping block; 25. a clamping groove; 26. a connector; 27. a clamping plate; 28. an arc-shaped groove.

Detailed Description

The present application is described in further detail below in conjunction with fig. 1-5.

Referring to fig. 1, a valve of a positive pressure fire air respirator comprises a valve body 101, wherein one side of the valve body 101 is fixedly communicated with an air inlet pipe 102, and the air inlet pipe 102 is communicated with air supply equipment of the respirator; the other side of the valve body 101 is fixedly communicated with an air outlet pipe 103, the air outlet pipe 103 is communicated with a face mask of the respirator, and a valve body switch 104 for controlling a valve core in the valve body 101 is also arranged on the valve body 101 and used for controlling the opening of the valve.

The embodiment of the application discloses malleation formula fire control air respirator valve gas tightness check out test set, refer to fig. 2, including gas holder 2, pneumatic pump 3, place in the frame 4 on level ground and be fixed in the detection case 6 on the frame 4, the safe gas that the gas holder 2 intussuseption was detected usefulness, pneumatic pump 3 and gas holder 2 pass through the trachea intercommunication, communicate simultaneously on the gas holder 2 and have two air supply pipes 5, pneumatic pump 3 can be with the gas pumping in the gas holder 2 to in the air supply pipe 5.

Referring to fig. 2 and 3, still be provided with mounting bracket 7 in the detection case 6, be provided with a plurality of groups of detection stations on the mounting bracket 7, every group detects station and includes two breather pipes 8 and a set of clamping mechanism 9, clamping mechanism 9 is used for installing the valve that awaits measuring, two breather pipes 8 are located the both sides of clamping mechanism 9 respectively, two breather pipes 8 in the same group respectively with two air supply pipe 5 one-to-one, the both ends of breather pipe 8 are fixed intercommunication respectively has first hose 10 and second hose 11, communicate through first hose 10 between breather pipe 8 and the corresponding air supply pipe 5, the one end that breather pipe 8 kept away from air supply pipe 5 communicates with intake pipe 102 or outlet duct 103 of valve that awaits measuring through second hose 11. Therefore, when the valve to be detected is detected, the air inlet pipe 102 and the air outlet pipe 103 are filled with detection gas for detection, and the detection efficiency is higher.

Referring to fig. 2 and 3, each ventilation pipe 8 is fixedly provided with an on-off valve 12, a one-way valve 13 and a pressure gauge 14 in sequence along the gas flowing direction, whether the gas between the ventilation pipe 8 and the gas supply pipe 5 flows or not is controlled by the on-off valve 12, the check valve 13 enables the detection gas to flow from the gas supply pipe 5 to the ventilation pipe 8 only, and the pressure gauge 14 detects the gas pressure in the ventilation pipe 8. Each vent pipe 8 is fixedly communicated with an emptying pipe 15, an emptying valve 16 for controlling the emptying pipe 15 to open and close is fixedly arranged on the emptying pipe 15, and the emptying valve 16 is in a closed state during detection. When the detection gas sequentially passes through all the components to be filled into the valve to be detected, whether the gas passage is leaked or not is judged by observing whether the reading of the pressure gauge 14 changes, if the reading of the pressure gauge 14 is stable, no gas is leaked, namely the valve to be detected has good air tightness, otherwise, the valve to be detected has poor air tightness.

Referring to fig. 2, for improving the detection effect, the inside of the detection box 6 is hollow, the top is provided with an opening, the side wall of the detection box 6 is fixedly communicated with a water inlet pipe 17 and a water outlet pipe 18, and control valves for controlling the opening and closing of the pipelines are fixedly arranged on the water inlet pipe 17 and the water outlet pipe 18, so that the inside of the detection box 6 can be filled with water. The detection box 6 is also provided with a driving mechanism for driving the installation frame 7 to move downwards, so that the valve to be detected on the installation frame 7 is immersed into water to carry out air tightness detection. The actuating mechanism is including being fixed in a plurality of actuating cylinder 19 of detecting case 6, and actuating cylinder 19 vertical setting, and this application embodiment sets up to four actuating cylinder 19, and four actuating cylinder 19's flexible end simultaneously with mounting bracket 7 fixed connection can drive whole mounting bracket 7 when actuating cylinder 19 stretches out and move down into detecting case 6 inside to drive valve and breather pipe 8 to be measured and submerge under water jointly. When the vent pipe 8 and the valve to be tested are filled with detection gas for detection, the air tightness can be judged through the reading of the pressure gauge 14, and meanwhile, the air leakage position can be judged through whether the bubbling phenomenon occurs in water or not.

Referring to fig. 3 and 4, the clamping mechanism 9 includes a first clamping plate 20, a second clamping plate 21, and a connecting portion, the first clamping plate 20 being fixedly connected to the mounting bracket 7, one end of the second clamping plate 21 being hinged to an end of the first clamping plate 20, the connecting portion being located at one ends of the first clamping plate 20 and the second clamping plate 21 away from the hinge shaft. Clamping grooves 22 are formed in the opposite side walls of the first clamping plate 20 and the second clamping plate 21, and rubber layers are fixedly arranged on the inner walls of the clamping grooves 22 so as to clamp an air inlet pipe 102 or an air outlet pipe 103 of the valve to be tested.

Referring to fig. 4 and 5, the connection part includes a snap ring 23 hinged to the first clamping block and a clamping block 24 fixed to the free end of the second clamping plate 21, the snap ring 23 is a square ring, the number of the clamping blocks 24 is set to be several, and the several clamping blocks 24 are uniformly arranged along the rotation direction of the second clamping plate 21. A plurality of clamping grooves 25 are formed in the side wall, away from the clamping ring 23, of each clamping block 24, and the clamping ring 23 can be clamped with any clamping groove 25 of any clamping block 24. When the first clamping plate 20 and the second clamping plate 21 clamp the valve to be tested, the clamping ring 23 is clamped with the clamping block 24 to keep the included angle between the first clamping plate 20 and the second clamping plate 21 unchanged, so that the valve to be tested is clamped.

Referring to fig. 3 and 4, a connector 26 is fixedly connected to an end of the second hose 11 facing the clamping mechanism 9, and a cross-sectional area of the connector 26 is larger than a cross-sectional area of the second hose 11. The connector 26 can be mutually matched with and fixedly communicated with an air inlet pipe 102 or an air outlet pipe 103 of the valve to be tested. The mounting panel is last still fixedly to be provided with a plurality of cardboard 27, and cardboard 27 quantity and the unanimous and one-to-one of second hose 11 quantity, and arc wall 28 that supplies second hose 11 to place has been seted up to cardboard 27's upper surface, and arc wall 28's cross-sectional area is less than the cross-sectional area of connector 26, and simultaneously connector 26 can with cardboard 27 towards clamping mechanism 9's lateral wall mutual butt to be convenient for place second hose 11 and connector 26 for the use next time. During actual detection, the connector 26 can be replaced according to the type of the valve to be detected, and the position of the clamping plate 27 can also be changed to a fixed position according to the setting directions of the air inlet pipe 102 and the air outlet pipe 103 of the valve to be detected. Two sets of detection stations in this application embodiment set up to the detection station of malleation formula fire control air respirator valve and the detection station of ordinary valve respectively to hoisting device's practicality.

The implementation principle of the positive pressure type fire air respirator valve air tightness detection device provided by the embodiment of the application is as follows: when the air tightness of the valve to be tested is detected, firstly, an air inlet pipe 102 or an air outlet pipe 103 of the valve to be tested is clamped between a first clamping plate 20 and a second clamping plate 21 and is buckled with a corresponding clamping groove 25 by a clamping ring 23 to fix the valve to be tested, then two connectors 26 in the same group of detection work are respectively connected with the air inlet pipe 102 and the air outlet pipe 103 of the valve to be tested, and a valve body switch 104 is in a closed state, the on-off valve 12 is opened, and the evacuation valve 16 is closed; then the driving cylinder 19 is extended, and the mounting frame 7, the valve to be tested and the vent pipe 8 are immersed in water; then pumping the detection gas in the gas storage tank 2 into the gas supply pipe 5, the first hose 10, the vent pipe 8, the second hose 11, the gas inlet pipe 102 and the gas outlet pipe 103 of the valve to be detected, observing whether reading changes occur on the two pressure gauges 14 and whether bubbles are generated in water after the two pressure gauges are stabilized for a period of time, if one or two pressure gauges are subjected to reading changes, the gas tightness of the gas inlet pipe 102 or the gas outlet pipe 103 of the valve to be detected is poor, roughly judging the gas leakage position through the gas bubble generation position, and entering the next round of detection if the reading is unchanged; then the valve body switch 104 of the valve to be tested in the previous round is opened, whether the pressure gauge 14 has reading change or not is observed again after the valve body switch is stabilized for a period of time, if the reading change occurs, the air tightness of the valve body 101 part of the valve to be tested is poor, and if the reading does not change, the air tightness of the valve body 101 part of the valve to be tested is good; and finally, after the detection is finished, the detection result is obtained, the driving cylinder 19 is contracted to bring the valve to be detected and the vent pipe 8 out of the water surface, the on-off valve 12 is closed, the evacuation valve 16 is opened, the detection gas in the valve to be detected and the vent pipe 8 is evacuated, and then the valve to be detected is disassembled.

The foregoing is a preferred embodiment of the present application, and is not intended to limit the scope of the present application in this way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (8)

1. The utility model provides a malleation formula fire control air respirator valve gas tightness check out test set, includes frame (4), be provided with on frame (4) and detect case (6), gas holder (2) and pneumatic pump (3), its characterized in that: a plurality of vent pipes (8) and a mounting frame (7) for mounting a valve to be tested are arranged in the detection box (6), every two vent pipes (8) are arranged into a group of detection stations, each vent pipe (8) is communicated with the air storage tank (2), and each vent pipe (8) is sequentially provided with an opening and closing valve (12), a one-way valve (13) and a pressure gauge (14) along the flow direction of detection gas; the two vent pipes (8) in each group are respectively communicated with an air inlet pipe (102) or an air outlet pipe (103) of the valve to be tested.

2. The positive pressure fire air respirator valve tightness detection device according to claim 1, wherein: the inside of the detection box (6) is hollow, a water inlet pipe (17) and a water outlet pipe (18) are fixedly communicated with the side wall of the detection box (6), and a driving mechanism for immersing the valve to be detected into water is further arranged in the detection box (6).

3. The positive pressure fire air respirator valve tightness detection device according to claim 2, wherein: the driving mechanism comprises a plurality of driving air cylinders (19) fixedly arranged on the detection box (6), the telescopic directions of the driving air cylinders (19) are all vertically arranged, and the telescopic ends of the driving air cylinders (19) are fixedly connected with the mounting frame (7) at the same time.

4. The positive pressure fire air respirator valve tightness detection device according to claim 2, wherein: the vent pipe (8) is fixedly connected to the mounting frame (7), and the vent pipe (8) can be immersed in water.

5. The positive pressure fire air respirator valve tightness detection device according to claim 4, wherein: the one end of the breather pipe (8) facing the valve to be detected is fixedly communicated with a second hose (11), one end of the second hose (11) far away from the breather pipe (8) is fixedly communicated with a connector (26) which can be matched and connected with the valve to be detected, and the cross-sectional area of the connector (26) is larger than that of the second hose (11); the mounting frame (7) is fixedly provided with a plurality of clamping plates (27), a plurality of arc-shaped grooves (28) for placing the second hose (11) are formed in the clamping plates (27), and the connectors (26) can be abutted to the side walls of the clamping plates (27) facing the valve to be tested.

6. The positive pressure fire air respirator valve tightness detection device according to claim 4, wherein: a first clamping plate (20) is fixed on the mounting frame (7), a second clamping plate (21) is hinged to the end part of the first clamping plate (20), clamping grooves (22) are formed in the opposite side walls of the first clamping plate (20) and the second clamping plate (21), and any one part of an air inlet pipe (102) or an air outlet pipe (103) of a valve to be tested can be clamped between the two clamping grooves (22); and the end of the first clamping plate (20) far away from the hinged end is provided with a connecting part which can be detachably connected with the free end of the second clamping plate (21).

7. The positive pressure fire air respirator valve tightness detection device of claim 6, wherein: the connecting portion comprises a clamping ring (23) hinged to the first clamping plate (20) and a plurality of clamping blocks (24) fixed to the second clamping plate (21), the clamping blocks (24) are uniformly arranged along the rotation direction of the second clamping plate (21), and the clamping ring (23) can be fastened to any clamping block (24).

8. The positive pressure fire air respirator valve tightness detection device of claim 6, wherein: the inner wall of the clamping groove (22) is fixedly provided with a rubber layer.

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