CN211877324U - Low-pressure air tightness detection device of oxygen respirator calibrator - Google Patents
Low-pressure air tightness detection device of oxygen respirator calibrator Download PDFInfo
- Publication number
- CN211877324U CN211877324U CN202020406908.3U CN202020406908U CN211877324U CN 211877324 U CN211877324 U CN 211877324U CN 202020406908 U CN202020406908 U CN 202020406908U CN 211877324 U CN211877324 U CN 211877324U
- Authority
- CN
- China
- Prior art keywords
- pressure
- air
- low
- valve
- regulating valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
The utility model relates to an oxygen respirator check gauge low pressure gas tightness detection device belongs to check out test set. The utility model adopts the technical proposal that: the water column meter air inlet and air pipe of the oxygen respirator calibrator are connected into a detected piece mouth tool, and the oxygen respirator calibrator comprises a compressed air cylinder and an electromagnetic pressure regulating valve, wherein the electromagnetic pressure regulating valve is arranged at the air outlet of the compressed air cylinder, and the low-pressure air outlet of the electromagnetic pressure regulating valve is connected into an air inlet pipe of the detected piece. The utility model adopts the high-pressure gas cylinder to replace the air pump for supplying gas, and the control device is composed of an electromagnetic pressure regulating valve, a water column check valve, a needle type fine adjustment valve and other elements. The device realizes that air supply output pressure is stable, and the water column gauge liquid level rises slowly, is convenient for cut off power and ooff valve operation. The device can reliably control the pressure of a low-pressure system, the pressure of the system can be stably kept on a pressure value specified by a standard and can be finely adjusted, and the problem that the air pressure fluctuation is large due to partial air backflow at the moment of closing of a switch valve in the prior art is solved.
Description
Technical Field
The utility model relates to an oxygen respirator check gauge low pressure gas tightness detection device belongs to check out test set.
Background
The low-pressure air tightness test of the oxygen respirator calibrator is one of important safety detection items of an isolated compressed oxygen self-rescuer, an isolated positive-pressure oxygen respirator and an automatic periphyton (hereinafter referred to as a detected piece for short). If the air tightness of the low-pressure system is not good in the using process of the detected piece, air leakage of the low-pressure system can be caused, and the serious consequences that the low-pressure breathing system fails can be caused. The national safety standard AQ 1054-2008 isolating type compressed oxygen self-rescuer definitely lists that the low-pressure air tightness is a necessary inspection item one by one.
The existing respirator calibrator (AJ 12 type) adopts the working principle that an air pump is used for inflating air, and the air is connected to a switch valve through a conduit. The circulation and interception of the air flow in the air path are realized by the action of an opening and closing valve. When the low-pressure air tightness is detected, the air outlet of the switch valve is connected with a rubber plug hermetically connected with the mouth of the detected piece by an air pipe. The other air pipe of the rubber plug is connected with a water column meter of the calibrator. The water column liquid level of the water column meter is regulated to be zero. And opening the switch valve, opening the air pump power supply for inflation, observing that the liquid level of the water column moves to specified parameters, and then quickly closing the switch valve and the air pump power supply to enable the low-voltage system to keep pressure within a specified time. And reading and recording the liquid level change value of the water column meter to finish detection.
The prior art has the following disadvantages: 1) in the detection process, the air pressure of the air pump is unstable, and the liquid level of the water column quickly rises and overflows after moving to the specified parameters, so that the detection cannot be carried out. 2) Even if the power supply of the air pump and the closing valve can be closed before the water column overflows in the detection process, the water column is found to be reduced to a larger value instantly and cannot be stably kept on a pressure value specified by a standard, and the detection error is larger. 3) The prior art uses the switching valve closed instant to have partial gas reflux to lead to the big problem of atmospheric pressure fluctuation.
Disclosure of Invention
In order to solve the problems, the invention provides a low-pressure air tightness detection device of an oxygen respirator calibrator.
The utility model adopts the technical proposal that:
the low-voltage air tightness detection device of the oxygen respirator calibrator is characterized in that an air inlet of a water column meter and an air pipe of the oxygen respirator calibrator are connected with a respirator mouth tool and comprise a compressed air cylinder and an electromagnetic pressure regulating valve,
an electromagnetic pressure regulating valve is installed at the air outlet of the compressed air cylinder, and a low-pressure air outlet of the magnetic pressure regulating valve is connected to a compressed air inlet pipe.
Preferably, the electromagnetic pressure regulating valve further comprises a water column check valve and a needle type fine adjustment valve, the needle type fine adjustment valve is installed at a low-pressure air outlet of the electromagnetic pressure regulating valve, the water column check valve is installed at an air outlet of the needle type fine adjustment valve, and a compressed air inlet pipe is connected to an air outlet at the upper part of the water column check valve.
Preferably, a high-pressure gauge and a low-pressure gauge are arranged on the electromagnetic pressure regulating valve at the position of the air outlet of the compressed air cylinder, the high-pressure gauge is positioned at the high-pressure air end of the electromagnetic pressure regulating valve and displays the pressure in the air cylinder, and the low-pressure gauge is positioned at the position after the pressure is regulated by the electromagnetic pressure regulating valve and displays the pressure of the air after the pressure is regulated by the.
The utility model adopts the high-pressure gas cylinder to replace the air pump for supplying gas, and the control device is composed of an electromagnetic pressure regulating valve, a water column check valve, a needle type fine adjustment valve and other elements. The device realizes that air supply output pressure is stable, and the water column gauge liquid level rises slowly, is convenient for cut off power and ooff valve operation. The device can reliably control the pressure of a low-pressure system, the pressure of the system can be stably kept on a pressure value specified by a standard and can be finely adjusted, and the problem that the air pressure fluctuation is large due to partial air backflow at the moment of closing of a switch valve in the prior art is solved.
Drawings
FIG. 1 is a connection diagram of the present invention,
FIG. 2 is a prior art test connection diagram.
Reference numerals: 1. the oxygen respirator calibrator comprises an oxygen respirator calibrator 2, a water column meter air inlet 3, an air pipe 4, a compressed air cylinder 5, an electromagnetic pressure regulating valve 6, a needle type fine adjustment valve 7, a water column check valve 8, a respirator port 9, a compressed air inlet pipe 10, a low-pressure gauge 11, a high-pressure gauge, a port 12 connector and a switch valve 13 outlet.
Detailed Description
The structure of the present invention will be further described below;
the utility model discloses the structure is as shown in figure 1, and the respirator mouth utensil 8 is inserted with the trachea to the water column meter air inlet 2 of oxygen respirator check gauge 1, and electromagnetism air-vent valve 5 is installed to the gas outlet of compressed air gas cylinder 4, and needle type micro-adjustment valve 6 is installed to the low pressure gas outlet of electromagnetism air-vent valve 5, and the gas outlet of needle type micro-adjustment valve 6 is installed water column check valve 7, compressed air intake pipe 9 is inserted to the upper portion gas outlet of water column check valve 7.
A high-pressure gauge and a low-pressure gauge are arranged on the electromagnetic pressure regulating valve 5 at the position of the air outlet of the compressed air cylinder 4, the high-pressure gauge is positioned at the high-pressure end of the electromagnetic pressure regulating valve 5 and displays the gas pressure in the cylinder, and the low-pressure gauge is positioned at the position, regulated by the electromagnetic pressure regulating valve 5, and displays the pressure of the electromagnetic pressure regulating valve 5 after passing through the pressure regulating valve.
The electromagnetic pressure regulating valve 5 is opened when being powered on, and the valve is automatically closed after power failure. The water column in the water column check valve can prevent the backflow of the output low-pressure gas. The bottom of the water column is provided with an air outlet, and the size and the quantity of the bubbles are adjusted by adopting a needle type fine adjustment knob.
Compare and see figure 2 with prior art scheme, this scheme can effectively avoid the unstable shortcoming of air current pressure of traditional scheme, can be according to required pressure value steady voltage pressurize. The inflation pressure slowly and stably rises, and the reading of the water column meter is more convenient and reliable.
Claims (3)
1. The utility model provides an oxygen respirator check gauge low pressure gas tightness detection device, the water column meter air inlet (2) of oxygen respirator check gauge (1) insert through the trachea and receive a piece mouth utensil (8), characterized by, including compressed air gas cylinder (4), electromagnetic pressure regulating valve (5) are installed to the gas outlet of compressed air gas cylinder (4), and the low pressure gas outlet of electromagnetic pressure regulating valve inserts and receives a piece intake pipe (9).
2. The low-pressure air tightness detection device of the oxygen respirator calibrator according to claim 1, characterized by further comprising a water column check valve (7) and a needle type fine adjustment valve (6), wherein the needle type fine adjustment valve (6) is installed at a low-pressure air outlet of the electromagnetic pressure regulating valve (5), the water column check valve (7) is installed at an air outlet of the needle type fine adjustment valve (6), and an air outlet at the upper part of the water column check valve (7) is connected to an air inlet pipe (9) of a part to be tested.
3. The low-pressure air tightness detection device of the oxygen respirator calibrator according to claim 1, wherein a high-pressure gauge and a low-pressure gauge are arranged on the electromagnetic pressure regulating valve (5) at the position of the air outlet of the compressed air cylinder (4), the high-pressure gauge is positioned at the high-pressure end of the electromagnetic pressure regulating valve (5) and displays the gas pressure in the cylinder, and the low-pressure gauge is positioned at the position after the pressure is regulated by the electromagnetic pressure regulating valve (5) and displays the gas pressure after the electromagnetic pressure regulating valve (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020406908.3U CN211877324U (en) | 2020-03-26 | 2020-03-26 | Low-pressure air tightness detection device of oxygen respirator calibrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020406908.3U CN211877324U (en) | 2020-03-26 | 2020-03-26 | Low-pressure air tightness detection device of oxygen respirator calibrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211877324U true CN211877324U (en) | 2020-11-06 |
Family
ID=73256978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020406908.3U Active CN211877324U (en) | 2020-03-26 | 2020-03-26 | Low-pressure air tightness detection device of oxygen respirator calibrator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211877324U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113686518A (en) * | 2021-08-25 | 2021-11-23 | 哈尔滨瑞源矿业装备有限公司 | Novel automatic calibration device |
-
2020
- 2020-03-26 CN CN202020406908.3U patent/CN211877324U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113686518A (en) * | 2021-08-25 | 2021-11-23 | 哈尔滨瑞源矿业装备有限公司 | Novel automatic calibration device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN211877324U (en) | Low-pressure air tightness detection device of oxygen respirator calibrator | |
| CN215112009U (en) | On-line detection device and gas recovery system using same | |
| CN112556945B (en) | Hydrogen fuel cell gas tightness low-pressure efficient leak detection system and method | |
| CN107044562A (en) | A kind of intelligent gas pressure regulator and application method | |
| CN113669328B (en) | Device for detecting performance of breather valve of oil tank and test method thereof | |
| CN214149718U (en) | Hydrogen fuel cell gas tightness low pressure high efficiency leak hunting device | |
| CN108918131B (en) | Testing device for valve under severe working condition | |
| CN212645966U (en) | Gas circuit control structure for pressure tester | |
| CN111457254B (en) | Data collection and detection system based on big data intelligent urban water supply | |
| CN114414171A (en) | Water purifier detection method | |
| CN209486200U (en) | Continuous milling machine electric hydraulic control valve universal test platform | |
| CN208672254U (en) | Solenoid valve air tightness detection equipment | |
| CN2645044Y (en) | Electronic expansion valve flow detection system | |
| CN111829723A (en) | Gas path control structure and control method for pressure tester | |
| CN112255003B (en) | Test platform of hydrogen fuel cell hydrogen return device | |
| CN221760768U (en) | Constant pressure water supply device | |
| CN214149457U (en) | Oil consumption instrument | |
| CN214334220U (en) | Scuba diving apparatus tester | |
| CN111594761B (en) | Intelligent urban water supply big data acquisition method | |
| CN219121689U (en) | Tester for exhaust valve and air inlet valve of protective clothing | |
| CN218793601U (en) | Oxygen respirator detector | |
| CN211668723U (en) | Air leakage detection device | |
| CN117976945B (en) | Fuel cell system and control method thereof | |
| CN215174182U (en) | Gas circuit and system of emergency water valve of fluorine plug cock valve of bulk polymerization kettle | |
| CN220853748U (en) | Hydrogen flowmeter for laboratory |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |