CN107894301A - A kind of vacuum pressure sensor experimental rig and method - Google Patents
A kind of vacuum pressure sensor experimental rig and method Download PDFInfo
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- CN107894301A CN107894301A CN201711351380.3A CN201711351380A CN107894301A CN 107894301 A CN107894301 A CN 107894301A CN 201711351380 A CN201711351380 A CN 201711351380A CN 107894301 A CN107894301 A CN 107894301A
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- vacuum
- pressure sensor
- vacuum pressure
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L27/00—Testing or calibrating of apparatus for measuring fluid pressure
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- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
Present invention is disclosed a kind of vacuum pressure sensor experimental rig, compression pump or high-pressure air source are through setting the valvular air supply opening for connecting vacuum generator, the exhaust outlet connection air of the vacuum generator, the vacuum interface of the vacuum generator connects vacuum pressure sensor to be tested, and the valve is driven by PLC.The present invention solves the difficulty that the life experiment of vacuum pressure sensor can not be run under the conditions of high frequency long-time, and the device is simple in construction without relying on complicated Vacuum generating system, and reliability is high, it is possible to achieve the vacuum experiment condition of wide width.
Description
Technical field
The present invention relates to vacuum pulse testing machine field.
Background technology
Vacuum pressure sensor is the important branch in sensor application, but is limited to the continuous of vavuum pump for a long time
Boat and bears the ability frequently switched at power, and not good method simulation practical vacuum application carries out life test.
Traditional life test mixes the pressure valve that can be frequently switched on by a constant-pressure source, or is logical
The pressure source of high-frequency impulse pressure wave can be produced to realize required high-frequency pressure waveform by crossing.But both approaches are not
Suitable for vacuum application, because the vavuum pump as vacuum source can not bear prolonged frequent start-stop, and due to vacuumizing
The time needed is significantly larger than the time that compressed air establishes malleation, and this method also is difficult to reach pressure wave change frequency in 1Hz
Requirement above.
The content of the invention
The technical problems to be solved by the invention be realize it is a kind of to vacuum pressure sensor using high frequency (>1Hz) and
The vacuum pulse pressure apparatus for testing service life of refrigerator of (more than 100,000 times) for a long time.
To achieve these goals, the technical solution adopted by the present invention is：A kind of vacuum pressure sensor experimental rig,
Compression pump or high-pressure air source are through setting the valvular air supply opening for connecting vacuum generator, the exhaust outlet connection of the vacuum generator
Air, the vacuum interface of the vacuum generator connect vacuum pressure sensor to be tested, and the valve is driven by PLC.
The compression pump or high-pressure air source are provided with least two experiment pipelines with valve and vacuum generator.
The vacuum pressure sensor output pressure signal to PLC store.
The vacuum pressure sensor is placed in temperature/humidity cabinet, the PLC outputs temperature/wet Regulate signal to temperature/humidity
Case.
The test method of vacuum pressure sensor experimental rig described in base：
Compression pump or high-pressure air source provide constant positive pressure；
PLC is opened and closed according to the control valve of vacuum pressure wave period；
PLC records the data parameters of each vacuum pressure sensor.
The present invention solves the difficulty that the life experiment of vacuum pressure sensor can not be run under the conditions of high frequency long-time,
The device is simple in construction without relying on complicated Vacuum generating system, and reliability is high, it is possible to achieve the vacuum experiment bar of wide width
Part.
Brief description of the drawings
The content of every width accompanying drawing expression in description of the invention and the mark in figure are briefly described below：
Fig. 1 is vacuum pressure sensor experimental rig structural representation；
Fig. 2 is vacuum generator structural representation in Fig. 1.
Embodiment
As shown in figure 1, vacuum pressure sensor experimental rig is provided with compression pump or high-pressure air source, compression pump or height are utilized
Pressurized air source replaces vavuum pump, and by the way of mixing vacuum generator using positive pressure source, positive pressure source can be by traditional
Method realizes high-frequency and prolonged switch, so required for being produced by vacuum generator high frequency (>When 1Hz) and long
Between (>100000 times) vacuum pressure waveform.
The air supply opening connection compression pump or high-pressure air source of vacuum generator, and between vacuum generator and positive pressure source
Pipeline be provided with valve (preferably electronic valve), the exhaust outlet connection air of vacuum generator, the vacuum interface of vacuum generator
Connect vacuum pressure sensor to be tested, the test unit being made up of valve and vacuum generator can set it is multigroup, by
Same compression pump or high pressure gas provide positive air pressure, and PLC also controls the switch of each valve respectively, while can also utilize
PLC records the test data of each vacuum pressure sensor, conveniently checks result of the test.
Pass through rational vacuum generator type selecting, it is possible to achieve the controllable precise of vacuum pressure numerical value, this fit on periphery
The annex such as temperature/humidity cabinet, can further realize the vacuum pressure life test with humiture circulation, meet the need of client
Will.
During work, pressure source provides positive pressure steady in a long-term, PLC control valves according to vacuum pressure wave period
Door opening and closing.When the valve is open, positive pressure supply vacuum generator (principle is shown in Fig. 2), make to be connected to vacuum generator collateral branch
Product bear vacuum, and when the valve is closed, no longer produce vacuum without the vacuum generator of positive pressure supply, product will
Directly with atmospheric pressure UNICOM.The opening and closing twice of valve forms a pressures cycle, by the valve constantly opening and closings of PLC controls and
The regulation of pressure source pressure size, the testing machine can realize different frequency difference vacuum values and different cycle-indexes requirement
Various vacuum pressure life tests.
The present invention is exemplarily described above in conjunction with accompanying drawing, it is clear that present invention specific implementation is not by aforesaid way
Limitation, as long as the improvement of the various unsubstantialities of inventive concept and technical scheme of the present invention progress is employed, or without changing
Enter and the design of the present invention and technical scheme are directly applied into other occasions, within protection scope of the present invention.
Claims (5)
- A kind of 1. vacuum pressure sensor experimental rig, it is characterised in that：Compression pump or high-pressure air source are through setting valvular company Connect the air supply opening of vacuum generator, the exhaust outlet connection air of the vacuum generator, the vacuum interface of the vacuum generator Vacuum pressure sensor to be tested is connected, the valve is driven by PLC.
- 2. vacuum pressure sensor experimental rig according to claim 1, it is characterised in that：The compression pump or high pressure Source of the gas is provided with least two experiment pipelines with valve and vacuum generator.
- 3. vacuum pressure sensor experimental rig according to claim 1 or 2, it is characterised in that：The vacuum pressure Force snesor output pressure signal to PLC store.
- 4. vacuum pressure sensor experimental rig according to claim 3, it is characterised in that：The vacuum pressure passes Sensor is placed in temperature/humidity cabinet, the PLC outputs temperature/wet Regulate signal to temperature/humidity cabinet.
- 5. the test method based on vacuum pressure sensor experimental rig described in claim 1-4, it is characterised in that：Compression pump or high-pressure air source provide constant positive pressure；PLC is opened and closed according to the control valve of vacuum pressure wave period；PLC records the data parameters of each vacuum pressure sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711351380.3A CN107894301A (en) | 2017-12-15 | 2017-12-15 | A kind of vacuum pressure sensor experimental rig and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711351380.3A CN107894301A (en) | 2017-12-15 | 2017-12-15 | A kind of vacuum pressure sensor experimental rig and method |
Publications (1)
| Publication Number | Publication Date |
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| CN107894301A true CN107894301A (en) | 2018-04-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201711351380.3A Pending CN107894301A (en) | 2017-12-15 | 2017-12-15 | A kind of vacuum pressure sensor experimental rig and method |
Country Status (1)
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Citations (15)
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| JPH04204133A (en) * | 1990-11-30 | 1992-07-24 | Yokogawa Electric Corp | Calibrating device for reference vacuum gage |
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| CN103048085A (en) * | 2011-10-13 | 2013-04-17 | 江苏恩泰传感器有限公司 | Temperature compensation system of pressure sensor and temperature compensation method thereof |
| CN203037408U (en) * | 2012-12-04 | 2013-07-03 | 武汉和越装备技术有限公司 | Pressure sensor durability test bench |
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| CN103499414A (en) * | 2013-10-16 | 2014-01-08 | 北京航空航天大学 | Dynamic calibration device for small-size pressure sensor |
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| CN204142417U (en) * | 2014-08-13 | 2015-02-04 | 江汉大学 | A kind of car force sensor endurance testing device |
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| CN1841041A (en) * | 2005-03-31 | 2006-10-04 | 株式会社电装 | Endurance testing apparatus |
| CN101671122A (en) * | 2009-08-18 | 2010-03-17 | 济南德佳玻璃机器有限公司 | Vacuum control system of hollow glass roller pressing machine |
| CN103048085A (en) * | 2011-10-13 | 2013-04-17 | 江苏恩泰传感器有限公司 | Temperature compensation system of pressure sensor and temperature compensation method thereof |
| CN102445303A (en) * | 2011-11-28 | 2012-05-09 | 武汉理工大学 | Experiment table for mass calibration of oil pressure sensor |
| CN102606544A (en) * | 2012-04-18 | 2012-07-25 | 王伟光 | Vacuum generator |
| CN102678640A (en) * | 2012-06-04 | 2012-09-19 | 太仓奥科机械设备有限公司 | Vacuum generator |
| CN203037408U (en) * | 2012-12-04 | 2013-07-03 | 武汉和越装备技术有限公司 | Pressure sensor durability test bench |
| CN203191151U (en) * | 2012-12-21 | 2013-09-11 | 黄鸣 | Vacuum gauge automatic calibrating device |
| CN203479474U (en) * | 2013-09-12 | 2014-03-12 | 北京垠海工程技术研究有限责任公司 | Vacuum tester |
| CN103499414A (en) * | 2013-10-16 | 2014-01-08 | 北京航空航天大学 | Dynamic calibration device for small-size pressure sensor |
| CN103557991A (en) * | 2013-11-11 | 2014-02-05 | 姚文利 | Method and device for calibrating vacuum gauge for measuring pressure |
| CN204142417U (en) * | 2014-08-13 | 2015-02-04 | 江汉大学 | A kind of car force sensor endurance testing device |
| CN104198115A (en) * | 2014-09-23 | 2014-12-10 | 湘潭电机股份有限公司 | Calibration device for detecting vacuum gauges with relative errors of indicating values no less than 30% |
| CN105784515A (en) * | 2015-12-08 | 2016-07-20 | 四川大学 | Vacuum ultrasonic vibration fatigue experimental system |
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Application publication date: 20180410 |