CN216954941U - Test fixture test bench - Google Patents
Test fixture test bench Download PDFInfo
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- CN216954941U CN216954941U CN202123402900.3U CN202123402900U CN216954941U CN 216954941 U CN216954941 U CN 216954941U CN 202123402900 U CN202123402900 U CN 202123402900U CN 216954941 U CN216954941 U CN 216954941U
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Abstract
The utility model discloses a test fixture test bed, which belongs to the technical field of aviation and comprises a panel box, wherein an air inlet, an air outlet and a test port are arranged on the upper surface of the panel box, a pressure regulating valve is arranged in the panel box, a handle of the pressure regulating valve extends out of the panel box, the air inlet is communicated with an air inlet port of the pressure regulating valve through a first guide pipe, an air outlet port of the pressure regulating valve is communicated with an air inlet port of a gas flowmeter through a second guide pipe, an air outlet port of the gas flowmeter is communicated with the air outlet through a third guide pipe, a wind pressure transmitter is further arranged in the panel box, and a gas measurement port of the wind pressure transmitter is communicated with the test port through a fourth guide pipe. The utility model solves the technical problem of adopting the gas flowmeter and the transmitter to carry out visual test on the mask or the air bag, has light structure, can be suitable for any environment, is simple and convenient to operate, adopts a visual integrated design, and can display the test result in time.
Description
Technical Field
The utility model belongs to the technical field of aerospace, and particularly relates to a test bed for a test tool.
Background
Today, the rapid development of economy, the airplane becomes an indispensable vehicle for people to work and live, and the aviation is also an important bridge for connecting the nation and the society. Under the big background of the rapid development of the aviation industry, various machine passenger oxygen masks are widely applied to airplanes, however, the requirements of the aerospace field on the machine passenger oxygen masks are very strict, the air pressure or flow resistance test needs to be carried out on mask products in a special test platform, and the traditional test platform is very heavy and is not easy to operate.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a test fixture test bed, which solves the technical problem of performing visual test on a mask or an air bag by adopting a gas flowmeter and a transmitter.
In order to achieve the purpose, the utility model adopts the following technical scheme: the utility model provides a test fixture test bench, including the panel box, be equipped with the air inlet on the upper surface of panel box, gas outlet and test port, be equipped with the air-vent valve in the panel box, outside the handle of air-vent valve stretched out the panel box, the air inlet communicates through the inlet port of first pipe with the air-vent valve, the outlet port of air-vent valve communicates through the inlet port of second pipe with gas flowmeter, gas flowmeter's outlet port passes through third pipe and gas outlet intercommunication, still be equipped with a wind pressure changer in the panel box, the gas measurement mouth of wind pressure changer communicates through fourth pipe and test port.
Preferably, the first conduit, the second conduit, the third conduit and the fourth conduit are all soft conduits for conveying gas.
Preferably, a direct current power supply is further arranged in the panel box and supplies power to the gas flowmeter and the wind pressure transmitter.
Preferably, a handle rod of the handle of the pressure regulating valve penetrates through the side wall of the panel box, and the handle of the pressure regulating valve is used for regulating the opening or closing of the pressure valve.
Preferably, the upper surface of panel box is equipped with two windowing, and gas flowmeter's display screen inlays to be established in one of them windowing, and wind pressure transmitter's display screen inlays to be located in another windowing.
Preferably, the pressure regulating valve is a gas pressure regulating valve.
Preferably, the model of the wind pressure transmitter is ECY 212-C; the gas flowmeter is of the type
MF 5712; the type of the direct current power supply is a switching power supply, and the output is 15V/2A.
The test tool test bed solves the technical problem of performing visual test on a mask or an air bag by adopting a gas flowmeter and a transmitter, is light in structure, can be applied to any environment, is simple and convenient to operate, adopts a visual integrated design, and can display a test result in time.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a connection diagram of the present invention during testing of a mask;
FIG. 3 is a connection diagram of the present invention during testing of an airbag;
in the figure: the device comprises a panel box 1, a handle 2, a window 3, a display screen 4, a direct current power supply 5, a pressure regulating valve 6, a gas flowmeter 7, a test port 8, an air outlet 9, an air inlet 10, a first conduit 11, a second conduit 12, a third conduit 13, a fourth conduit 14, a wind pressure transmitter 15, a pressure pump 16, a hose a17, a hose b18, a face mask 19, an air bag 20, a tee joint 21 and a sealing tool 22.
Detailed Description
By a test fixture test bench that fig. 1-fig. 3 show, including panel box 1, the upper surface of panel box 1 is equipped with air inlet 10, gas outlet 9 and test port 8, and the upper surface of panel box 1 is its front, is equipped with air-vent valve 6 in the panel box 1, air inlet 10 communicates through the inlet port of first pipe 11 with air-vent valve 6, and the outlet port of air-vent valve 6 passes through the inlet port intercommunication of second pipe 12 with gas flowmeter 7, gas flowmeter 7 give vent to anger the port pass through third pipe 13 with gas outlet 9 communicates, still is equipped with a wind pressure transmitter 15 in the panel box 1, and the gas measurement mouth of wind pressure transmitter 15 passes through fourth pipe 14 and test port 8 communicates. The first conduit 11, the second conduit 12, the third conduit 13 and the fourth conduit 14 are all soft conduits for conveying gas.
The panel box 1 is also internally provided with a direct current power supply 5, the direct current power supply 5 is respectively and electrically connected with the gas flowmeter 7 and the wind pressure transmitter 15 through leads, and the direct current power supply 5 supplies power for the gas flowmeter 7 and the wind pressure transmitter 15.
The pressure regulating valve 6 is a gas pressure regulating valve 6, the handle 2 of the pressure regulating valve 6 is arranged outside the panel box 1, the handle rod of the handle 2 of the pressure regulating valve penetrates through the side wall of the panel box 1, the handle 2 of the pressure regulating valve is fixedly arranged at the end part of the handle rod, and the handle 2 of the pressure regulating valve is used for regulating the opening or closing of the pressure valve.
The upper surface of panel box 1 is equipped with two windowing 3, and the display screen 4 of gas flowmeter 7 inlays to be established in one of them windowing 3, and the display screen 4 of wind pressure changer 15 inlays to be located in another windowing 3, and wind pressure changer 15 is from taking the manometer, and wind pressure changer 15's display screen 4 shows atmospheric pressure.
The model of the wind pressure transmitter 15 is ECY 212-C; the model of the gas flowmeter 7 is MF 5712; the type of the direct current power supply 5 is a switching power supply, and the output is 15V/2A.
As shown in fig. 2, which is a connection diagram of the mask 19 when the present invention is tested, in this embodiment, a pressure pump 16 is communicated with an air inlet 10 through a hose a17, the pressure pump 16 generates a negative pressure, so that a negative air pressure is generated at the air inlet 10 to achieve an air suction effect, a sealing tool 22 for sealing a mask opening is installed on the mask 19, two hoses b18 are connected to the sealing tool 22, both hoses b are communicated with the mask 19, one hose b18 is communicated with an air outlet, the other hose b18 is communicated with a test opening 8, after the pressure pump 16 is operated, the generated negative air pressure is applied to the air outlet 9 through a conduit a, the air inlet 10, a first conduit 11, a pressure regulating valve, a second conduit 12, a gas flowmeter 7 and a third conduit 13 in sequence, and then the air in the mask 19 is sucked through one hose b18, a wind pressure transmitter 15, a fourth conduit 14, a pressure transmitter, a pressure sensor, and a pressure sensor, The air outlet 9 is communicated with another hose b18 in turn, and the air pressure transmitter 15 collects and measures the air pressure value at the testing port 8, and the air pressure value at the position can actually reflect the air pressure value in the face mask 19.
The pressure regulating valve is used for regulating the air flow between the air inlet 10 and the air outlet 9, and the air flow meter 7 is used for measuring the air flow between the air inlet 10 and the air outlet 9.
In this embodiment, the sealing tool 22 is a stainless steel block, two through holes are formed in the stainless steel block, the stainless steel block is fixedly connected with two hoses b18, the two hoses b18 are respectively and correspondingly communicated with the two through holes, when the test is performed, the edge of the mask opening of the mask 19 is attached to the stainless steel block, the stainless steel block seals the mask opening of the mask 19, and the two through holes are used for ventilating the mask 19.
In the embodiment, in the test process, firstly, the air flow is controlled by adjusting the handle 2 of the pressure regulating valve and observing the indication change of the gas flowmeter 7, when the numerical value displayed by the gas flowmeter 7 reaches 30L/min, the numerical value is stabilized for a period of time, the indication of the pressure meter of the wind pressure transmitter 15 in the air suction state is recorded, and whether the indication exceeds 0.20KPa or not is observed.
And adjusting the handle 2 of the pressure regulating valve, recording the readings of the intelligent wind pressure transmitter 15 after the readings of the gas flowmeter 7 reach 70L/min and are stable for a period of time, and observing whether the readings exceed 0.50 KPa.
The user may determine whether the mask 19 is acceptable by both 0.20KPa and 0.50 KPa.
The pressure regulating valve 6 is used for regulating the air pressure/air flow; the model of the digital display type gas flowmeter 7 is MF5712, the measuring range is 0-200L/min, the precision is 0.01L/min, the power supply is 8-24V, and the electronic screen can display the airflow of the experimental environment; intelligence wind pressure changer 15: the model is ECY212-C, the measuring range is 0-10 KPa, the precision is 0.01KPa, the power supply is 10-20V, and the electronic screen can display the air pressure of the test environment; the power supply equipment comprises a direct current power supply 5, a switching power supply 15V/2A, a gas flowmeter 7 and an intelligent wind pressure transmitter 15; the model of the pressure pump 16 is MC1-30, the precision is 0.01KPa, and the measuring range is 0-5 KPa.
Referring to fig. 3, which is a connection diagram of the present invention when testing the air bag 20, in this embodiment, a pressure pump 16 is connected to the air inlet 10 through a hose a17, the pressure pump 16 generates a positive pressure, so that a positive air pressure is generated at the air inlet 10 to achieve the air blowing effect, a tee 21 is connected to the air outlet pipe of the air bag 20, and the other two ports of the tee 21 are connected to the air outlet 9 and the test port 8 through two pipes b, respectively.
In the test of the embodiment, firstly, the pressure pump 16 is started, the pressure is adjusted by the pressure adjusting valve handle 2, when the reading of the pressure gauge of the wind pressure transmitter 15 rises to 6.89KPa and is stabilized for a period of time, finally, the whole air bag 20 and the tee 21 are immersed in water, and whether bubbles are generated around the air bag 20 is observed; whether the air bag 20 is damaged or not is checked, and the air bag 20 is ensured not to influence the subsequent use.
The test tool test bed solves the technical problem of performing visual test on the face mask 19 or the air bag 20 by adopting the gas flowmeter 7 and the transmitter, is light in structure, can be applied to any environment, is simple and convenient to operate, adopts a visual integrated design, and can display a test result in time.
Claims (7)
1. The utility model provides a test fixture test bench which characterized in that: the panel pressure regulating device comprises a panel box (1), wherein an air inlet (10), an air outlet (9) and a test port (8) are formed in the upper surface of the panel box (1), a pressure regulating valve (6) is arranged in the panel box (1), a handle (2) of the pressure regulating valve (6) extends out of the panel box (1), the air inlet (10) is communicated with an air inlet port of the pressure regulating valve (6) through a first guide pipe (11), an air outlet port of the pressure regulating valve (6) is communicated with an air inlet port of a gas flowmeter (7) through a second guide pipe (12), an air outlet port of the gas flowmeter (7) is communicated with the air outlet (9) through a third guide pipe (13), a wind pressure transmitter (15) is further arranged in the panel box (1), and a gas measurement port of the wind pressure transmitter (15) is communicated with the test port (8) through a fourth guide pipe (14).
2. The test tool test stand of claim 1, wherein: the first conduit (11), the second conduit (12), the third conduit (13) and the fourth conduit (14) are all soft conduits for conveying gas.
3. The test tool test stand of claim 1, wherein: the panel box (1) is also internally provided with a direct current power supply (5), and the direct current power supply (5) supplies power for the gas flowmeter (7) and the wind pressure transmitter (15).
4. The test tool test stand of claim 1, wherein: the handle rod of the handle (2) of the pressure regulating valve penetrates through the side wall of the panel box (1), and the handle (2) of the pressure regulating valve is used for regulating the opening or closing of the pressure valve.
5. The test tool test stand of claim 1, wherein: the upper surface of panel box (1) is equipped with two windowing (3), and display screen (4) of gas flowmeter (7) are inlayed and are established in one of them windowing (3), and display screen (4) of wind pressure changer (15) are inlayed and are located in another windowing (3).
6. The test tool test stand of claim 1, wherein: the pressure regulating valve (6) is a gas pressure regulating valve (6).
7. The test tool test stand of claim 3, wherein: the type of the wind pressure transmitter (15) is ECY 212-C; the type of the gas flowmeter (7) is MF 5712; the type of the direct current power supply (5) is a switching power supply, and the output is 15V/2A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123402900.3U CN216954941U (en) | 2021-12-31 | 2021-12-31 | Test fixture test bench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123402900.3U CN216954941U (en) | 2021-12-31 | 2021-12-31 | Test fixture test bench |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216954941U true CN216954941U (en) | 2022-07-12 |
Family
ID=82311627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123402900.3U Active CN216954941U (en) | 2021-12-31 | 2021-12-31 | Test fixture test bench |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216954941U (en) |
-
2021
- 2021-12-31 CN CN202123402900.3U patent/CN216954941U/en active Active
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