CN105806556A - Device and method for pressure sensor alternating test - Google Patents
Device and method for pressure sensor alternating test Download PDFInfo
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- CN105806556A CN105806556A CN201610296393.4A CN201610296393A CN105806556A CN 105806556 A CN105806556 A CN 105806556A CN 201610296393 A CN201610296393 A CN 201610296393A CN 105806556 A CN105806556 A CN 105806556A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L25/00—Testing or calibrating of apparatus for measuring force, torque, work, mechanical power, or mechanical efficiency
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- Testing Of Engines (AREA)
Abstract
The invention belongs to the technical field of alternating pressure tests, and relates to a device and method for a pressure sensor alternating test.The device comprises an air source (1), a filter (2), a rotary knob valve (3), a first pressure reducing valve (4), a second pressure reducing valve (5), a first electromagnetic valve (6), a second electromagnetic valve (7), a third electromagnetic valve (8), a one-way throttle valve (9), a pressurizing throttle valve (10), a pressure relief throttle valve (11), a booster pump (12), an alternating pump (13), an oil tank (14), a tested product (15), an air control high pressure needle valve (16), a sensor (17) and a connecting pipeline, wherein the first electromagnetic valve (6), the second electromagnetic valve (7), the third electromagnetic valve (8), the sensor (17) and some accessory microswitches are controlled by a PLC program.The test method is convenient to implement, high in testing precision and capable of achieving automatic control completely.
Description
Technical field
The invention belongs to alternating pressure experimental technique field, relate to the device and method of the Alternating Test of all kinds Pressure gauge, pressure transducer.
Background technology
Pressure transducer needs to carry out various test to ensure its quality before dispatching from the factory, and it is improved, wherein, Alternating Test is important content of the test, existing Alternating Test is mostly relatively simple, having that operator's working strength is big, measuring accuracy can not be guaranteed, transient data is difficult to catch, manual operation, error are unavoidable, it is easy to cause the deficiencies such as irremediable test incident and loss.
Summary of the invention
The technical problem to be solved is: propose a kind of device for pressure transducer Alternating Test, by PLC program control, it is possible to realize the automatic business processing such as automatic vent, alternation, ftercompction, timing counting.
The present invention adopts the technical scheme that: a kind of device for pressure transducer Alternating Test, including air source 1, filter 2, knob valve the 3, first air relief valve the 4, second air relief valve the 5, first electromagnetic valve the 6, second electromagnetic valve the 7, the 3rd electromagnetic valve 8, one-way throttle valve 9, pressurizing throttle valve 10, pressure release choke valve 11, force (forcing) pump 12, alternation pump 13, fuel tank 14, gas control high pressure needle valve 16, sensor 17 and connect pipeline, wherein first electromagnetic valve the 6, second electromagnetic valve the 7, the 3rd electromagnetic valve 8, sensor 17 is by PLC program control；
Air source 1 flows to the knob valve 3 of gas source switch through filter 2, and knob valve 3 outlet is divided into two-way, and wherein a road is linked in sequence after the second air relief valve the 5, the 3rd electromagnetic valve 8, pore high pressure needle valve 16 and enters fuel tank 14；Be linked in sequence first air relief valve the 4, first electromagnetic valve 6, one-way throttle valve 9 of another road accesses force (forcing) pump 6, final accesses fuel tank 14；First air relief valve 4 outlet is divided into two-way, after pipeline of wherein leading up to connects the second electromagnetic valve 7, pressurizing throttle valve 10 in parallel and pressure release choke valve 11 arrive alternation pump 13, one interface of alternation pump 13 connects force (forcing) pump 12 by pipeline, another interface connects pore high pressure needle valve 16, between alternation pump 13 and pore high pressure needle valve 16, it is connected to test product 15, and pipeline accesses sensor 17 and the pressure display table of test loine pressure.
The method of above-mentioned assay device, comprises the following steps:
Step 1: test product is accessed relevant position, connection air-source inflow switchs, namely after knob valve 3, the maximum pressure of the alternation needed for presetting first air relief valve the 4, second air relief valve 5 to test product 15, after connecting the first electromagnetic valve the 6, the 3rd electromagnetic valve 8, gas control high pressure needle valve 16 is connected therewith, and force (forcing) pump 12 is started working；
Step 2: to force (forcing) pump 12 fluid injection ftercompction, aerofluxus, regulate ftercompction speed by one-way throttle valve 9；
Step 3: the second electromagnetic valve 7 is received pressurization mouth, alternation pump 13 piston is advanced to upper limit position, upper limit switch connection, when in fuel tank 14, ball float is floated to certain position by liquid, in fuel tank 14, adnexa floating-ball level switch is connected, providing the 3rd electromagnetic valve 8 of signal at stop aerofluxus, gas control high pressure needle valve 16 is accordingly turned off, and aerofluxus stops；
Step 4: force (forcing) pump 12 works, until system reaches the alternation pressure upper limit set, start alternation pump 13, signal is provided by control system PLC, first electromagnetic valve 6 of ftercompction cuts out, force (forcing) pump 12 quits work, simultaneously, sensor 17 provides signal after sensing pressure upper limit value, second electromagnetic valve 7 is switched to pressure relief opening, alternation pump 13 piston realizes rollback, system starts pressure release, arrive the alternation threshold pression set, sensor 17 provides signal, second electromagnetic valve 7 is switched to boost port, alternation pump 13 piston is pushed ahead, system starts again supercharging, subsequently, under the programme-control of PLC, repeat alternation, until reaching the number of alternations set, alternation pump 13 quits work.
In alternation process, pressurizing throttle valve 10 and pressure release choke valve 11 in adjustment figure can change corresponding speed；Running into alternation pump 13 piston in alternation process and be advanced to upper limit position, when system does not reach pressure upper limit value because of micro-oozing, after PLC program can judge tens of second, force (forcing) pump 12 can start work automatically, carries out ftercompction to higher limit.
The invention has the beneficial effects as follows: pressure transducer Alternating Test device is for multiple Pressure gauge and pressure transducer, relate to product type many, pressure limit span is big, each product testing number of alternations, from tens times to up to ten thousand times, different, in alternative frequency and alternating cycles, pressing time and venting duration also there is different requirement, Alternating Test process only need to carry out alternation operating parameter setting, can automatically run to off-test alarm after startup, dramatically reduce the labor intensity of operator；Process of the test data can automatically save record, and without personal error, data are accurately and reliably；It is easy to operate, stable performance, measuring accuracy is high, be fully achieved and automatically control.One of the maximum feature of this equipment Automatic Control, easy and simple to handle.
Accompanying drawing explanation
Fig. 1 is connection diagram of the present invention.
Detailed description of the invention
Below in conjunction with Figure of description, the specific embodiment of the present invention is described further.
Referring to Fig. 1, a kind of device for pressure transducer Alternating Test, including air source 1, filter 2, knob valve the 3, first air relief valve the 4, second air relief valve the 5, first electromagnetic valve the 6, second electromagnetic valve the 7, the 3rd electromagnetic valve 8, one-way throttle valve 9, pressurizing throttle valve 10, pressure release choke valve 11, force (forcing) pump 12, alternation pump 13, fuel tank 14, gas control high pressure needle valve 16, sensor 17 and connect pipeline, wherein first electromagnetic valve the 6, second electromagnetic valve the 7, the 3rd electromagnetic valve 8, sensor 17 is by PLC program control；
Air source 1 flows to the knob valve 3 of gas source switch through filter 2, and knob valve 3 outlet is divided into two-way, and wherein a road is linked in sequence after the second air relief valve the 5, the 3rd electromagnetic valve 8, pore high pressure needle valve 16 and enters fuel tank 14；Be linked in sequence first air relief valve the 4, first electromagnetic valve 6, one-way throttle valve 9 of another road accesses force (forcing) pump 6, final accesses fuel tank 14；First air relief valve 4 outlet is divided into two-way, after pipeline of wherein leading up to connects the second electromagnetic valve 7, pressurizing throttle valve 10 in parallel and pressure release choke valve 11 arrive alternation pump 13, one interface of alternation pump 13 connects force (forcing) pump 12 by pipeline, another interface connects pore high pressure needle valve 16, between alternation pump 13 and pore high pressure needle valve 16, it is connected to test product 15, and pipeline accesses sensor 17 and the pressure display table of test loine pressure.
The method of above-mentioned assay device, comprises the following steps:
Step 1: test product is accessed relevant position, connection air-source inflow switchs, namely after knob valve 3, the maximum pressure of the alternation needed for presetting first air relief valve the 4, second air relief valve 5 to test product 15, after connecting the first electromagnetic valve the 6, the 3rd electromagnetic valve 8, gas control high pressure needle valve 16 is connected therewith, and force (forcing) pump 12 is started working；
Step 2: to force (forcing) pump 12 fluid injection ftercompction, aerofluxus, regulate ftercompction speed by one-way throttle valve 9；
Step 3: the second electromagnetic valve 7 is received pressurization mouth, alternation pump 13 piston is advanced to upper limit position, upper limit switch connection, when in fuel tank 14, ball float is floated to certain position by liquid, in fuel tank 14, adnexa floating-ball level switch is connected, providing the 3rd electromagnetic valve 8 of signal at stop aerofluxus, gas control high pressure needle valve 16 is accordingly turned off, and aerofluxus stops；
Step 4: force (forcing) pump 12 works, until system reaches the alternation pressure upper limit set, start alternation pump 13, signal is provided by control system PLC, first electromagnetic valve 6 of ftercompction cuts out, force (forcing) pump 12 quits work, simultaneously, sensor 17 provides signal after sensing pressure upper limit value, second electromagnetic valve 7 is switched to pressure relief opening, alternation pump 13 piston realizes rollback, system starts pressure release, arrive the alternation threshold pression set, sensor 17 provides signal, second electromagnetic valve 7 is switched to boost port, alternation pump 13 piston is pushed ahead, system starts again supercharging, subsequently, under the programme-control of PLC, repeat alternation, until reaching the number of alternations set, alternation pump 13 quits work.
In alternation process, pressurizing throttle valve 10 and pressure release choke valve 11 in adjustment figure can change corresponding speed；Running into alternation pump 13 piston in alternation process and be advanced to upper limit position, when system does not reach pressure upper limit value because of micro-oozing, after PLC program can judge tens of second, force (forcing) pump 12 can start work automatically, carries out ftercompction to higher limit.
Claims (2)
1. the device for pressure transducer Alternating Test, it is characterised in that: include air source (1), filter (2), knob valve (3), the first air relief valve (4), the second air relief valve (5), the first electromagnetic valve (6), the second electromagnetic valve (7), the 3rd electromagnetic valve (8), one-way throttle valve (9), pressurizing throttle valve (10), pressure release choke valve (11), force (forcing) pump (12), alternation pump (13), fuel tank (14), gas control high pressure needle valve (16), sensor (17) and connect pipeline；
Air source (1) flows to the knob valve (3) of gas source switch through filter (2), knob valve (3) outlet is divided into two-way, and wherein be linked in sequence the second air relief valve (5), the 3rd electromagnetic valve (8), pore high pressure needle valve (16) of a road enters fuel tank (14) afterwards；Another road be linked in sequence the first air relief valve (4), the first electromagnetic valve (6), one-way throttle valve (9) access force (forcing) pump (6), finally access fuel tank (14)；First air relief valve (4) outlet is divided into two-way, after pipeline of wherein leading up to connects the second electromagnetic valve (7), pressurizing throttle valve (10) in parallel and pressure release choke valve (11) arrive alternation pump (13), one interface of alternation pump (13) connects force (forcing) pump (12) by pipeline, another interface connects pore high pressure needle valve (16), between alternation pump (13) and pore high pressure needle valve (16), it is connected to test product (15), and pipeline accesses sensor (17) and the pressure display table of test loine pressure.
2. the test method for the device of pressure transducer Alternating Test, it is characterised in that comprise the following steps:
Step 1: test product is accessed relevant position, connection air-source inflow switchs, namely after knob valve (3), presetting first air relief valve (4), the second air relief valve (5) are to the maximum pressure of the alternation needed for test product (15), after connecting the first electromagnetic valve (6), the 3rd electromagnetic valve (8), gas control high pressure needle valve (16) is connected therewith, and force (forcing) pump (12) is started working；
Step 2: to force (forcing) pump (12) fluid injection ftercompction, aerofluxus, regulates ftercompction speed by one-way throttle valve (9)；
Step 3: the second electromagnetic valve (7) is received pressurization mouth, alternation pump (13) piston is advanced to upper limit position, upper limit switch connection, when in fuel tank (14), ball float is floated to certain position by liquid, in fuel tank (14), adnexa floating-ball level switch is connected, providing the 3rd electromagnetic valve (8) of signal at stop aerofluxus, gas control high pressure needle valve (16) is accordingly turned off, and aerofluxus stops；
Step 4: force (forcing) pump (12) works, until system reaches the alternation pressure upper limit set, start alternation pump (13), signal is provided by control system PLC, first electromagnetic valve (6) of ftercompction cuts out, force (forcing) pump (12) quits work, simultaneously, sensor (17) provides signal after sensing pressure upper limit value, second electromagnetic valve (7) is switched to pressure relief opening, alternation pump (13) piston realizes rollback, system starts pressure release, arrive the alternation threshold pression set, sensor (17) provides signal, second electromagnetic valve (7) is switched to boost port, alternation pump (13) piston is pushed ahead, system starts again supercharging, subsequently, under the programme-control of PLC, repeat alternation, until reaching the number of alternations set, alternation pump (13) quits work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610296393.4A CN105806556A (en) | 2016-05-06 | 2016-05-06 | Device and method for pressure sensor alternating test |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610296393.4A CN105806556A (en) | 2016-05-06 | 2016-05-06 | Device and method for pressure sensor alternating test |
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| CN105806556A true CN105806556A (en) | 2016-07-27 |
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| CN201610296393.4A Pending CN105806556A (en) | 2016-05-06 | 2016-05-06 | Device and method for pressure sensor alternating test |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107449657A (en) * | 2017-09-01 | 2017-12-08 | 贵州永红航空机械有限责任公司 | A kind of negative pressure pressure alternation test method and apparatus |
| CN111060297A (en) * | 2019-12-06 | 2020-04-24 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | Enhanced test equipment, method and device |
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| DE4232234C1 (en) * | 1992-09-25 | 1994-01-05 | Rexroth Mannesmann Gmbh | Pressure control and monitoring system for hydraulic machine chuck mounted on machine tool - has motorised regulator valve for double-acting cylinder and inbuilt test mode for checking pressure sensor calibration |
| US5331842A (en) * | 1992-08-27 | 1994-07-26 | Smith Fiberglass Products Inc. | Cyclical pressure testing apparatus |
| CN101458198A (en) * | 2008-12-29 | 2009-06-17 | 浙江大学 | High-pressure high flow fatigue test system for bearing equipment |
| CN101793614A (en) * | 2010-01-29 | 2010-08-04 | 重庆长安汽车股份有限公司 | Automobile air conditioning evaporator pressure alternation resistance test bed |
| CN201607337U (en) * | 2010-01-28 | 2010-10-13 | 刘广宏 | Test-bed used for testing compression resistance and thermal shock resistance of combustion engine heat exchanger |
| CN102128702A (en) * | 2010-01-19 | 2011-07-20 | 上海微电子装备有限公司 | Device and method for testing pneumatic pressure |
| CN102645374A (en) * | 2011-02-22 | 2012-08-22 | 上海德朗汽车零部件制造有限公司 | Pressure alternating test system of air-air intercooler |
-
2016
- 2016-05-06 CN CN201610296393.4A patent/CN105806556A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5331842A (en) * | 1992-08-27 | 1994-07-26 | Smith Fiberglass Products Inc. | Cyclical pressure testing apparatus |
| DE4232234C1 (en) * | 1992-09-25 | 1994-01-05 | Rexroth Mannesmann Gmbh | Pressure control and monitoring system for hydraulic machine chuck mounted on machine tool - has motorised regulator valve for double-acting cylinder and inbuilt test mode for checking pressure sensor calibration |
| CN101458198A (en) * | 2008-12-29 | 2009-06-17 | 浙江大学 | High-pressure high flow fatigue test system for bearing equipment |
| CN102128702A (en) * | 2010-01-19 | 2011-07-20 | 上海微电子装备有限公司 | Device and method for testing pneumatic pressure |
| CN201607337U (en) * | 2010-01-28 | 2010-10-13 | 刘广宏 | Test-bed used for testing compression resistance and thermal shock resistance of combustion engine heat exchanger |
| CN101793614A (en) * | 2010-01-29 | 2010-08-04 | 重庆长安汽车股份有限公司 | Automobile air conditioning evaporator pressure alternation resistance test bed |
| CN102645374A (en) * | 2011-02-22 | 2012-08-22 | 上海德朗汽车零部件制造有限公司 | Pressure alternating test system of air-air intercooler |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107449657A (en) * | 2017-09-01 | 2017-12-08 | 贵州永红航空机械有限责任公司 | A kind of negative pressure pressure alternation test method and apparatus |
| CN111060297A (en) * | 2019-12-06 | 2020-04-24 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | Enhanced test equipment, method and device |
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