CN110646148B - Respirator check out test set and respirator detecting system - Google Patents
Respirator check out test set and respirator detecting system Download PDFInfo
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- CN110646148B CN110646148B CN201910957825.5A CN201910957825A CN110646148B CN 110646148 B CN110646148 B CN 110646148B CN 201910957825 A CN201910957825 A CN 201910957825A CN 110646148 B CN110646148 B CN 110646148B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2876—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for valves
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- Respiratory Apparatuses And Protective Means (AREA)
Abstract
The invention provides respirator detection equipment and a respirator detection system, and relates to the technical field of respirator detection. Respirator check out test set includes first manometer, test mold and fills the aspirator pump, test mold is formed with the through-hole, first manometer is connected with the through-hole, the through-hole respectively with fill the inflation inlet and the induction port pipe connection of aspirator pump, fill the induction port of aspirator pump and be used for the breather valve air inlet pipe connection with the respirator, fill the inflation inlet of aspirator pump and be used for the breather valve gas outlet pipe connection with the respirator, all be equipped with the control valve on the pipeline, test mold is used for being connected with the face guard of respirator, the face guard encloses with test mold and closes formation airtight chamber, airtight chamber and through-hole intercommunication. The respirator detection system comprises the respirator detection device. The invention aims to enable a relatively rapid measurement check of the tightness of a respirator mask.
Description
Technical Field
The invention relates to the technical field of respirator detection, in particular to respirator detection equipment and a respirator detection system.
Background
Generally, a respirator mainly comprises a respirator back frame, an oxygen tank, a mask and the like, wherein the oxygen tank and the mask are respectively connected with the respirator back frame, a breathing valve is connected and arranged between the mask and the respirator back frame, and an alarm whistle and a pressure gauge are connected and arranged between the oxygen tank and the respirator back frame. Wherein, the connection among the above-mentioned all devices of respirator is hose intercommunication.
The respirator plays an important role in protecting the respiratory system of a human body, so that the detection and control of the performances of the respirator, such as reliability, tightness and the like, are very important. However, the detection of the respirator is the middle air pressure detection of a pipeline and the reliability detection of a breather valve at present, and the airtightness of the mask of the respirator cannot be measured and detected.
Disclosure of Invention
The invention aims to provide respirator detection equipment and a respirator detection system, which can carry out relatively quick measurement and detection on the tightness of a respirator mask.
The embodiment of the invention is realized by the following steps:
in one aspect of the embodiments of the present invention, there is provided a ventilator detection apparatus including: the testing mold is provided with a through hole, the first pressure gauge is connected with the through hole, the through hole is respectively connected with an inflation inlet and an air inlet pipeline of the inflation and inspiration pump, the air inlet of the inflation and inspiration pump is used for being connected with an air inlet pipeline of a breather valve, the inflation inlet of the inflation and inspiration pump is used for being connected with an air outlet pipeline of the breather valve, control valves are arranged on the pipelines, the testing mold is used for being connected with a face mask of the breather, the face mask and the testing mold are enclosed to form a sealed cavity, and the sealed cavity is communicated with the through hole.
Optionally, the test mold is a human head model, and the through hole is a cavity of the human head model.
Optionally, the control valve is a solenoid valve.
Optionally, the first pressure gauge is a positive and negative pressure electronic gauge.
Optionally, the respirator detection device further comprises a second pressure gauge and a medium-pressure end interface, the second pressure gauge is connected with the medium-pressure end interface through a pipeline, and the medium-pressure end interface is used for being communicated with a hose of the respirator.
Optionally, the second pressure gauge is a medium pressure electronic gauge.
Optionally, the respirator detection device further comprises a third pressure gauge and a high-pressure end interface, the third pressure gauge is connected with the high-pressure end interface through a pipeline, and the high-pressure end interface is used for being communicated with an alarm whistle of the respirator or a pressure gauge of the respirator.
Optionally, a regulating valve is further disposed on the conduit between the third pressure gauge and the high-pressure-end interface.
Optionally, the third pressure gauge is a high pressure electronic gauge.
In another aspect of the embodiments of the present invention, there is provided a ventilator detection system, including: a respirator detection apparatus according to any preceding claim.
The embodiment of the invention has the beneficial effects that:
the respirator detection equipment provided by the embodiment of the invention comprises a first pressure gauge, a test die and an air charging and sucking pump. The mask testing device comprises a testing die and a mask, wherein a through hole is formed in the testing die, the testing die is used for being connected with the mask of a respirator, the mask and the testing die can enclose to form a sealed cavity after being worn to the testing die, and the sealed cavity is communicated with the through hole formed in the testing die. The inflation inlet and the air suction inlet of the inflation and inhalation pump are respectively connected with the through hole pipeline of the test mould, and the inflation and the air suction of the inflation and inhalation pump can inflate and inhale air through the closed cavity enclosed by the face mask and the test mould through the through hole of the test mould, so that the breathing scene of a human body wearing the face mask is simulated. The first pressure gauge is connected with a through hole formed in the test mold, the air pressure in the sealed cavity can be measured and detected by the communication between the through hole and the sealed cavity, and the airtightness performance index of the mask of the respirator can be obtained by analyzing the measurement data when the mask is worn. The air suction port of the air charging and sucking pump can be further connected with an air inlet of a breather valve of a respirator, the air charging port can be further connected with an air outlet of the breather valve of the respirator, air charging and air sucking of the air charging and sucking pump can simulate air charging and air discharging of the breather valve when a human body wears a mask to breathe, measurement and detection of air pressure of a sealed cavity formed by the mask and a test mold are carried out by utilizing a first pressure gauge, and performance indexes of airtightness and reliability of the breather valve can be obtained after measurement data are analyzed. Therefore, the device can be used for quickly, simply and conveniently measuring and detecting the airtightness and reliability of the mask of the respirator and the breather valve connected with the mask to obtain the performance index.
According to the respirator detection system provided by the embodiment of the invention, the respirator detection equipment is adopted, the airtightness of the mask and the breather valve of the respirator can be relatively quickly detected, and the respirator detection system is simple and compact in structure and convenient to use and carry.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic structural diagram of a respirator detection apparatus according to an embodiment of the present invention;
fig. 2 is a second schematic structural diagram of a respirator detection apparatus according to an embodiment of the present invention.
Icon: 111-a first pressure gauge; 112-a second pressure gauge; 113-a third pressure gauge; 120-testing the mold; 121-a through hole; 130-charge air pump; 131-an inflation port; 132-suction opening; 140-medium voltage terminal interface; 150-high pressure end interface; 160-a regulating valve; 210-a breathing valve; 220-face mask.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
An embodiment of the present invention provides a respirator detection apparatus, as shown in fig. 1, including: the device comprises a first pressure gauge 111, a testing mold 120 and an air inflation and inspiration pump 130, wherein the testing mold 120 is provided with a through hole 121, the first pressure gauge 111 is connected with the through hole 121, the through hole 121 is respectively connected with an air inflation port 131 and an air suction port 132 of the air inflation and inspiration pump 130 through pipelines, the air suction port 132 of the air inflation and inspiration pump 130 is used for being connected with an air inlet pipeline of a breather valve 210 of the breather, the air inflation port 131 of the air inflation and inspiration pump 130 is used for being connected with an air outlet pipeline of the breather valve 210 of the breather, the pipelines are all provided with control valves (not shown in the drawing), the testing mold 120 is used for being connected with a face mask 220 of the breather, the face mask 220 and the testing mold 120 are enclosed to form a sealed cavity, and the sealed cavity is communicated with the through hole 121.
And those skilled in the art will understand that the first pressure gauge 111, the testing mold 120, the air charging pump 130, etc. are disposed in a bracket or a housing to form a compact integral device. In the following description of the embodiments of the present invention, other features of the ventilator detection apparatus should also be disposed in the same bracket or housing as the above-described structure, and therefore, the description thereof is omitted.
When the pressure control device is used, the sealed cavity is inflated and inhaled through the inflation port 131 of the inflation and inhalation pump 130 and the inhalation port 132, the air pressure in the sealed cavity is measured and detected by the first pressure gauge 111, the air pressure change in each inflation and inhalation process is observed, when the air pressure change difference is stable, the tightness of the mask 220 is good, otherwise, the tightness is poor, and when the air pressure change difference is within 20mbar, the pressure control stability of the breathing valve 210 is good. Or, the sealed cavity is inflated by using the inflation port 131 of the inflation and inhalation pump 130, when the value of the first pressure gauge 111 reaches a certain value, the control valve of the pipeline between the inflation port 131 and the mask 220 is closed to block the pipeline, the change of the value of the first pressure gauge 111 is observed, and when the change range is within 1mbar, the sealing performance of the mask 220 is relatively good. It should be noted that when only one of the charging port 131 and the suction port 132 of the charging pump 130 is used, the other pipe needs to be blocked by the control valve.
It should be noted that, in general, the test mold 120 may be configured as a human head model, a human face model, or a flat plate structure with a through hole 121, and is not particularly limited herein as long as it can enclose a closed cavity formed in the through hole 121 and communicated with the mask 220.
Generally, the pipe connections between the above devices are all connected by using hoses. Of course, in practical applications, the pipe connections between the devices may also be made of steel pipes, hard plastic pipes, etc., and are not limited herein. The pipeline is provided with a control valve, and the communication or the obstruction of the corresponding pipeline can be controlled through the control valve.
The respirator detection equipment provided by the embodiment of the invention comprises a first pressure gauge 111, a test die 120 and an air charging and sucking pump 130. The testing mold 120 is provided with a through hole 121, the testing mold 120 is used for being connected with a mask 220 of a respirator, the mask 220 and the testing mold 120 can form a closed cavity after being worn on the testing mold 120, and the closed cavity is communicated with the through hole 121 formed on the testing mold 120. The inflation inlet 131 and the air suction inlet 132 of the inflation and inhalation pump 130 are respectively connected with the through hole 121 of the testing mold 120 through pipelines, and the inflation and inhalation of the inflation and inhalation pump 130 can inflate and inhale the closed cavity enclosed by the mask 220 and the testing mold 120 through the through hole 121 of the testing mold 120, so that the breathing scene of a human body wearing the mask 220 can be simulated. The first pressure gauge 111 is connected with a through hole 121 formed in the test mold 120, the air pressure in the sealed cavity can be measured and detected by the communication between the through hole 121 and the sealed cavity, and the tightness performance index of the mask 220 of the respirator can be obtained by analyzing the measured data when the mask is worn. The air inlet 132 of the air inflation and inhalation pump 130 can be further connected with an air inlet of a breathing valve 210 of the respirator, the air charging port 131 can be further connected with an air outlet of the breathing valve 210 of the respirator, air inlet and air outlet of the breathing valve 210 when the human body wearing the mask 220 breathes can be simulated through air inflation and air inhalation of the air inflation and inhalation pump 130, the air pressure of a sealed cavity formed by the mask 220 and the testing mold 120 is measured and detected through the first pressure gauge 111, and performance indexes of tightness and reliability of the breathing valve 210 can be obtained after the measured data are analyzed. Therefore, the device can be used for quickly and simply measuring and detecting the tightness and the reliability of the mask 220 of the respirator and the breather valve 210 connected with the mask 220 to obtain the performance index.
Alternatively, as shown in fig. 1, the test mold 120 is a human head model, and the through hole 121 is a cavity of the human head model.
Set up test mold 120 into human head model, through the emulation of human head model, can make the wearing of face guard 220 on test model more be close to actual use condition to can obtain more accurate measured data, improve this respirator check out test set's measurement accuracy.
Optionally, the control valve is a solenoid valve.
The control valve is set to be an electromagnetic valve, and the communication or the obstruction of the corresponding pipeline can be controlled in a signal control or electric control mode, so that the automatic setting or the remote control of the respirator detection equipment can be realized conveniently.
Optionally, the first pressure gauge 111 is a positive and negative pressure electronic gauge.
It should be noted that the range of the positive and negative pressure gauges used by the first pressure gauge 111 is typically-20 to +20 mbar. Of course, in practical application, other suitable ranges of the positive and negative piezoelectric electrometers can be selected, as long as the selected range can include-10 to +10 mbar.
The first pressure gauge 111 is set as a positive and negative pressure electronic gauge, which can respectively measure the positive pressure and the negative pressure of a closed cavity enclosed by the mask 220 and the test mold 120, and when the air pressure in the closed cavity is negative pressure by the inspiration of the inspiration pump 130, the negative pressure can be measured by the positive and negative pressure electronic gauge, so that the tightness of the lower negative pressure mask 220 and the breather valve 210 can be measured and detected.
Optionally, as shown in fig. 2, the ventilator detection apparatus further comprises a second pressure gauge 112 and a medium pressure port 140, the second pressure gauge 112 is in pipe connection with the medium pressure port 140, and the medium pressure port 140 is used for communicating with a hose of the ventilator.
The respirator detection equipment is also provided with a second pressure gauge 112 connected to the medium-pressure end port 140, the medium-pressure end port 140 is communicated with the hose of the respirator, so that the second pressure gauge 112 can measure and detect the air pressure of the gas flowing in the hose of the respirator, and when the value detected by the second pressure gauge 112 is 6-8bar or 7-8.5bar, the normal air pressure of the middle process gas in the hose of the respirator is indicated, and the normal working stability of the respirator is better.
Optionally, the second pressure gauge 112 is a medium pressure electronic gauge.
Note that, the range of the medium-pressure electronic meter used in the second pressure gauge 112 is usually 0 to 20 bar. Of course, in practical applications, other suitable range of medium voltage electronic meters can be selected, as long as the selected range can contain 0 to 8.5 bar.
The second pressure gauge 112 is provided as a medium-pressure electronic gauge, which can obtain more accurate measurement data than a mechanical pressure gauge and facilitates reading and setting.
Optionally, as shown in fig. 2, the ventilator detection apparatus further includes a third pressure gauge 113 and a high-pressure port 150, the third pressure gauge 113 is connected to the high-pressure port 150 in a pipeline, and the high-pressure port 150 is used for communicating with an alarm whistle of the ventilator or a pressure gauge of the ventilator.
The respirator detection equipment is also provided with a third pressure gauge 113 connected with the high-pressure end interface 150, and the high-pressure end interface 150 is communicated with an alarm whistle of the respirator or a pressure gauge of the respirator, so that the third pressure gauge 113 can measure and detect the starting pressure of the alarm whistle of the respirator or measure and detect the pressure value of the pressure gauge to calibrate the pressure gauge. In use, when the high pressure port 150 is connected to an alarm whistle, by controlling the output air pressure of the respirator, the measurement from the third pressure gauge 113 can be considered to be approximately equal to the activation pressure of the alarm whistle when the alarm whistle is activated, typically a qualified alarm whistle activation pressure in the range of 50-60 bar.
Optionally, as shown in fig. 2, a regulating valve 160 is further disposed on the pipe between the third pressure gauge 113 and the high-pressure port 150.
Set up governing valve 160 on the pipeline between third manometer 113 and high-pressure terminal interface 150, can adjust the alarm whistle or the pressure of manometer that high-pressure terminal interface 150 communicates through governing valve 160, make the regulation of the pressure in the pressure calibration operation of the start pressure detection of alarm whistle or manometer convenient and fast more.
Optionally, the third pressure gauge 113 is a high pressure electronic gauge.
Note that, the range of the high-pressure electronic gauge used in the third pressure gauge 113 is usually 0 to 400 bar. Of course, in practical applications, other suitable ranges of the high-voltage electronic watch can be selected, as long as the selected range can contain 0 to 60 bar.
Set up third manometer 113 as the high-pressure electronic watch, can obtain more accurate measured data than mechanical manometer to be convenient for reading and setting.
In another aspect of the embodiments of the present invention, there is provided a ventilator detection system, including: a respirator detection apparatus according to any preceding claim.
In general, the following requirements can be met by a respirator detection system: (1) the method comprises the following steps of (1) detecting the air tightness of a high-pressure end of an air bottle, (2) detecting a standard range value of intermediate pressure between a pressure reducing valve of the high-pressure end and a breather valve and detecting the performance of a safety valve of the intermediate pressure, (3) detecting the positive pressure and the negative pressure of the opening and the closing of the breather valve, (4) detecting the air tightness of a breather mask, (5) calibrating a pressure gauge of the breather, (6) detecting a low-pressure alarm device with insufficient air volume of the air bottle, and (7) detecting the firmness of all devices on a breather back frame.
This respirator detecting system adopts foretell respirator check out test set, can carry out quick detection relatively to the leakproofness of the face guard of respirator and breather valve to simple structure is compact, convenient to use and carry.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. The invention aims to provide respirator detection equipment and a respirator detection system, which can carry out relatively quick measurement and detection on the tightness of a respirator mask.
The embodiment of the invention is realized by the following steps:
in one aspect of the embodiments of the present invention, there is provided a ventilator detection apparatus including: the testing mold is provided with a through hole, the first pressure gauge is connected with the through hole, the through hole is respectively connected with an inflation inlet and an air inlet pipeline of the inflation and inspiration pump, the air inlet of the inflation and inspiration pump is used for being connected with an air inlet pipeline of a breather valve, the inflation inlet of the inflation and inspiration pump is used for being connected with an air outlet pipeline of the breather valve, control valves are arranged on the pipelines, the testing mold is used for being connected with a face mask of the breather, the face mask and the testing mold are enclosed to form a sealed cavity, and the sealed cavity is communicated with the through hole.
Optionally, the test mold is a human head model, and the through hole is a cavity of the human head model.
Optionally, the control valve is a solenoid valve.
Optionally, the first pressure gauge is a positive and negative pressure electronic gauge.
Optionally, the respirator detection device further comprises a second pressure gauge and a medium-pressure end interface, the second pressure gauge is connected with the medium-pressure end interface through a pipeline, and the medium-pressure end interface is used for being communicated with a hose of the respirator.
Optionally, the second pressure gauge is a medium pressure electronic gauge.
Optionally, the respirator detection device further comprises a third pressure gauge and a high-pressure end interface, the third pressure gauge is connected with the high-pressure end interface through a pipeline, and the high-pressure end interface is used for being communicated with an alarm whistle of the respirator or a pressure gauge of the respirator.
Optionally, a regulating valve is further disposed on the conduit between the third pressure gauge and the high-pressure-end interface.
Optionally, the third pressure gauge is a high pressure electronic gauge.
In another aspect of the embodiments of the present invention, there is provided a ventilator detection system, including: a respirator detection apparatus according to any preceding claim.
The embodiment of the invention has the beneficial effects that:
the respirator detection equipment provided by the embodiment of the invention comprises a first pressure gauge, a test die and an air charging and sucking pump. The mask testing device comprises a testing die and a mask, wherein a through hole is formed in the testing die, the testing die is used for being connected with the mask of a respirator, the mask and the testing die can enclose to form a sealed cavity after being worn to the testing die, and the sealed cavity is communicated with the through hole formed in the testing die. The inflation inlet and the air suction inlet of the inflation and inhalation pump are respectively connected with the through hole pipeline of the test mould, and the inflation and the air suction of the inflation and inhalation pump can inflate and inhale air through the closed cavity enclosed by the face mask and the test mould through the through hole of the test mould, so that the breathing scene of a human body wearing the face mask is simulated. The first pressure gauge is connected with a through hole formed in the test mold, the air pressure in the sealed cavity can be measured and detected by the communication between the through hole and the sealed cavity, and the airtightness performance index of the mask of the respirator can be obtained by analyzing the measurement data when the mask is worn. The air suction port of the air charging and sucking pump can be further connected with an air inlet of a breather valve of a respirator, the air charging port can be further connected with an air outlet of the breather valve of the respirator, air charging and air sucking of the air charging and sucking pump can simulate air charging and air discharging of the breather valve when a human body wears a mask to breathe, measurement and detection of air pressure of a sealed cavity formed by the mask and a test mold are carried out by utilizing a first pressure gauge, and performance indexes of airtightness and reliability of the breather valve can be obtained after measurement data are analyzed. Therefore, the device can be used for quickly, simply and conveniently measuring and detecting the airtightness and reliability of the mask of the respirator and the breather valve connected with the mask to obtain the performance index.
According to the respirator detection system provided by the embodiment of the invention, the respirator detection equipment is adopted, the airtightness of the mask and the breather valve of the respirator can be relatively quickly detected, and the respirator detection system is simple and compact in structure and convenient to use and carry.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A respirator testing apparatus for testing the performance of a respirator, comprising: first manometer, test mold and fill the aspirator pump, test mold is formed with the through-hole, first manometer with the through-hole is connected, the through-hole respectively with fill the inflation inlet and the induction port pipe connection of aspirator pump, fill the induction port of aspirator pump be used for with the breather valve air inlet pipe connection of respirator, fill the inflation inlet of aspirator pump be used for with the breather valve gas outlet pipe connection of respirator, all be equipped with the control valve on the pipeline, test mold be used for with the face guard of respirator is connected, the face guard with test mold encloses to close and forms airtight chamber, airtight chamber with the through-hole intercommunication.
2. The respirator detection apparatus of claim 1, wherein the test mold is a mannequin head, and the through hole is a cavity of the mannequin head.
3. The respirator detection apparatus of claim 1, wherein the control valve is a solenoid valve.
4. The respirator testing apparatus of claim 1, wherein the first pressure gauge is a positive and negative pressure electronic gauge.
5. The ventilator detection device of claim 1 further comprising a second pressure gauge plumbed to the medium pressure port and a medium pressure port for communicating with a hose of the ventilator.
6. The respirator detection apparatus of claim 5, wherein the second pressure gauge is a medium pressure electronic watch.
7. The ventilator detection device of claim 1 further comprising a third pressure gauge plumbed to the high pressure port and a high pressure port for communicating with an alarm whistle of the ventilator or a pressure gauge of the ventilator.
8. Respirator testing apparatus as claimed in claim 7 wherein a regulating valve is also provided in the conduit between said third pressure gauge and said high pressure end interface.
9. The respirator detection apparatus of claim 7, wherein the third pressure gauge is a high pressure electronic watch.
10. A respirator detection system comprising a respirator detection apparatus according to any one of claims 1 to 9.
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| CN201910957825.5A CN110646148B (en) | 2019-10-10 | 2019-10-10 | Respirator check out test set and respirator detecting system |
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| CN117074063B (en) * | 2023-08-17 | 2024-03-01 | 枣庄广源安全仪器有限公司 | Comprehensive protective performance test device for self-rescuer |
| CN117419945B (en) * | 2023-12-19 | 2024-03-12 | 四川烈火胜服科技有限公司 | Closed circulation type respirator performance detection device |
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