CN104535260A - Dynamic pressure fatigue testing device for pressure gage - Google Patents
Dynamic pressure fatigue testing device for pressure gage Download PDFInfo
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- CN104535260A CN104535260A CN201410770395.3A CN201410770395A CN104535260A CN 104535260 A CN104535260 A CN 104535260A CN 201410770395 A CN201410770395 A CN 201410770395A CN 104535260 A CN104535260 A CN 104535260A
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Abstract
The invention discloses a dynamic pressure fatigue testing device for pressure gage. The dynamic pressure fatigue testing device for the pressure gage comprises a water tank, a booster pump, a pressure regulating valve, testing bases and a dynamic pressure testing counting circuit, wherein the pressure regulating valve is connected with the booster pump, the liquid inlet of the booster pump is communicated with the water tank through a connecting pipe, the liquid outlet of the booster pump is communicated with the multiple testing bases through connecting pipes, the connecting bases are connected in parallel, and the dynamic pressure testing counting circuit is electrically connected with the valve regulating valve and the booster pump. With water as a pressure resource, the dynamic pressure fatigue testing device for the pressure gage can detect the service life of the pressure gage under dynamic pressure.
Description
Technical field
The invention belongs to detection or the calibration of the instrument for measuring hydrodynamic pressure, being specifically related to a kind of tensimeter dynamic pressure fatigue test device.
Background technology
It is sensitive element that tensimeter refers to flexible member, measures and indicates the instrument higher than environmental pressure, and application is very general, and it is almost throughout all industrial flows and scientific research field.Be seen everywhere in fields such as heat distribution pipe network, oil gas transmission, water and air supply system, vehicle maintenance maintenance factory shops.Especially, in industrial stokehold and commercial measurement process, the elastic sensing element due to mechanical compression table has very high physical strength and the characteristic such as convenient for production, makes mechanical compression table obtain applying more and more widely.
Manometric tenure of use is usually longer, so after tensimeter produces, usually want the withstand voltage service time of inspection pressure table, thus ensure manometric reliable in quality.What existing tensimeter fatigue testing equipment pressure source adopted is high-pressure air source or oil, by opening source of the gas and gas of releasing reaches test purpose, adopts the mode of high-pressure air source to have the deficiency of two aspects: 1. directly use source of the gas as power source; Source of the gas is not easily bought, and consumption is uneconomical greatly, and high-pressure air source pressure transient, danger etc.; 2. do power source with High Pressure Air Compressor, plant equipment is not easily bought, and cost is high, and energy consumption is large.And for oxygen manometer, can not contact oils, so oil can not as pressure source.
Summary of the invention
For the defect that above-mentioned prior art exists, the object of the present invention is to provide a kind of tensimeter dynamic pressure fatigue test device using water as pressure source.
For achieving the above object, technical scheme of the present invention is as follows:
Tensimeter dynamic pressure fatigue test device, wherein, comprise tank, supercharge pump, pressure regulator valve, test bench and dynamic pressure test count loop, described pressure regulator valve is connected with supercharge pump, the inlet of described supercharge pump is communicated with by connecting pipe with tank, the liquid outlet of supercharge pump is communicated with by the test bench of connecting pipe with multiple parallel connection, and described dynamic pressure test count loop is electrically connected with pressure regulator valve and supercharge pump.
When adopting technique scheme, before test, first tensimeter to be detected is connected on test bench, water is added in tank, and ensure that connecting pipe water inlet end floods by water, then supercharge pump is started, according to tested manometric working pressure, regulate pressure regulator valve, the pressure that supercharge pump is exported is close with tensimeter maximum working pressure (MOP), by dynamic pressure test count loop modulation dynamic pressure number of times, in the process of test, observe the change of manometric pointer instruction, through dynamic pressure test, just can judge that whether tensimeter fatigue performance is qualified.
Further, described test bench comprises testing tube, sealing gasket, and described testing tube upper end is provided with the manometric internal thread that is connected, and is provided with the boss installing sealing gasket in testing tube.Tensimeter is threaded with test bench, and is sealed by sealing gasket, and syndeton is simple, good sealing effect.
Further, described dynamic pressure test count loop comprises counter, dual-time relay, proximity switch and the solenoid valve of being with reset button, described counter and the parallel connection of dual-time relay are in the loop, described proximity switch is connected to counter output, solenoid valve is connected to the output terminal of dual-time relay, and the input end of counter output and dual-time relay is provided with the first internal relay and the switch of series connection; Be provided with the second internal relay between described solenoid valve and dual-time relay, described proximity switch is connected with supercharge pump, and solenoid valve connects pressure regulator valve by connecting pipe.During power-on, dual-time relay power starts timing, solenoid valves is opened simultaneously, gas inputs pressure regulator valve by solenoid valve, and then enter supercharge pump and carry out supercharging, test pressure table, when the stroke of supercharge pump makes a round trip, the proximity switch be arranged on supercharger just transmits a signal to counter, counter just records once, when testing time reaches predetermined value, first internal relay closes, the dual-time relay switch be connected on the first internal relay is shorted, dual-time relay quits work, test terminates, open blowdown valve pressure release, ensure safety, when need again test, close blowdown valve, press reset button, counter O reset, equipment restarts work by preset times again.
Further, the connecting pipe that described supercharge pump is connected with test bench is provided with blowdown valve.After testing, in connecting pipe, also have pressure, and also accumulate the water of test in connecting pipe, open blowdown valve, by the earth pressure release in connecting pipe, and the water in connecting pipe is discharged.
Further, the master gauge in parallel with test bench is also provided with.By the tensimeter of contrast test and the force value of master gauge, can in observation test process, tensimeter test accuracy changes.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation:
Fig. 1 is the structural representation of tensimeter dynamic pressure fatigue test device embodiment of the present invention;
Fig. 2 is the circuit theory diagrams in dynamic pressure test count loop in tensimeter dynamic pressure fatigue test device embodiment of the present invention;
Fig. 3 is the structural representation of test bench part in tensimeter dynamic pressure fatigue test device embodiment of the present invention.
Embodiment
Below by embodiment, the present invention is further detailed explanation:
Reference numeral in Figure of description comprises: tank 1, pressure regulator valve 2, supercharge pump 3, test bench 4, testing tube 41, sealing gasket 42, internal thread 43, boss 44, connecting pipe 5, blowdown valve 6, proximity switch 7, reset button 8, counter 9, first internal relay 10, solenoid valve 11, second internal relay 12, switch 13, dual-time relay 14.
As shown in Figure 1, a kind of tensimeter dynamic pressure fatigue test device, comprise tank 1, supercharge pump 3, pressure regulator valve 2, test bench 4 and dynamic pressure test count loop, pressure regulator valve 2 is connected with supercharge pump 3, the inlet of supercharge pump 3 is communicated with by connecting pipe 5 with tank 1, and the liquid outlet of supercharge pump 3 is communicated with the test bench 4 of multiple parallel connection by connecting pipe 5, adopts two supercharge pumps 3 in the present embodiment, test bench 4 is four parallel connections, and dynamic pressure test count loop is electrically connected with pressure regulator valve 2 and supercharge pump 3.
In the present embodiment, as shown in Figure 2, dynamic pressure test count loop comprises counter 9, dual-time relay 14, proximity switch 7 and the solenoid valve 11 of being with reset button 8, counter 9 and dual-time relay 14 parallel connection are in the loop, proximity switch 7 is connected to counter 9 output terminal, solenoid valve 11 is connected to the output terminal of dual-time relay 14, and the input end of counter 9 output terminal and dual-time relay 14 is provided with the first internal relay 10 and the switch 13 of series connection; Be provided with the second internal relay 12 between solenoid valve 11 and dual-time relay 14, proximity switch 7 is connected with supercharge pump 3, and solenoid valve 11 connects pressure regulator valve 2 by connecting pipe 5.During power-on, dual-time relay 14 is energized and starts timing, solenoid valve 11 energising is simultaneously opened, gas inputs pressure regulator valve 2 by solenoid valve 11, and then enter supercharge pump 3 and carry out supercharging, test pressure table, when the stroke of supercharge pump 3 makes a round trip, the proximity switch 7 be arranged on supercharger just transmits a signal to counter 9, counter 9 just records once, when testing time reaches predetermined value, first internal relay 10 closes, dual-time relay 14 switch 13 be connected on the first internal relay 10 is shorted, dual-time relay 14 quits work, test terminates, open blowdown valve 6 pressure release, ensure safety, when need again test, close blowdown valve 6, press reset button 8, counter 9 resets, and equipment restarts work by preset times again.
Test bench 4 comprises testing tube 41, sealing gasket 42, and testing tube 41 upper end is provided with the manometric internal thread 43 that is connected, and is provided with the boss 44 installing sealing gasket 42 in testing tube 41.Tensimeter is threaded with test bench 4, and is sealed by sealing gasket 42, and syndeton is simple, good sealing effect.
The connecting pipe 5 that supercharge pump 3 is connected with test bench 4 is provided with blowdown valve 6.After testing, in connecting pipe 5, also have pressure, and also accumulate the water of test in connecting pipe 5, open blowdown valve 6, by the earth pressure release in connecting pipe 5, and the water in connecting pipe 5 is discharged.
Also be provided with the master gauge in parallel with test bench 4.By the tensimeter of contrast test and the force value of master gauge, can in observation test process, tensimeter test accuracy changes.
Specific works principle:
Before test, first tensimeter to be detected is connected on the testing tube 41 of test bench 4, water is added in tank 1, and ensure that connecting pipe 5 water inlet end floods by water, during power-on, dual-time relay 14 is energized and starts timing, solenoid valve 11 energising is simultaneously opened, gas inputs pressure regulator valve 2 by solenoid valve 11, and then enter supercharge pump 3 and carry out supercharging, test pressure table, when the stroke of supercharge pump 3 makes a round trip, the proximity switch 7 be arranged on supercharger just transmits a signal to counter 9, counter 9 just records once, when testing time reaches predetermined value, first internal relay 10 closes, dual-time relay 14 switch 13 be connected on the first internal relay 10 is shorted, dual-time relay 14 quits work, test terminates, open blowdown valve 6 pressure release, ensure safety, when need again test, close blowdown valve 6, press reset button 8, counter 9 resets, and equipment restarts work by preset times again.According to tested manometric working pressure in test process, regulate pressure regulator valve 2, the pressure that supercharge pump 3 is exported is close with tensimeter maximum working pressure (MOP), in the process of test, observe the change of manometric pointer instruction, and the contrast of testing pressure table and master gauge.
Above-described is only embodiments of the invention, and in scheme, the general knowledge such as known concrete structure and characteristic does not do too much description at this.Should be understood that; for a person skilled in the art, under the prerequisite not departing from structure of the present invention, some distortion and improvement can also be made; these also should be considered as protection scope of the present invention, and these all can not affect effect of the invention process and practical applicability.The protection domain that this application claims should be as the criterion with the content of its claim, and the embodiment in instructions etc. record the content that may be used for explaining claim.
Claims (5)
1. tensimeter dynamic pressure fatigue test device, it is characterized in that, comprise tank, supercharge pump, pressure regulator valve, test bench and dynamic pressure test count loop, described pressure regulator valve is connected with supercharge pump, the inlet of described supercharge pump is communicated with by connecting pipe with tank, the liquid outlet of supercharge pump is communicated with by the test bench of connecting pipe with multiple parallel connection, and described dynamic pressure test count loop is electrically connected with pressure regulator valve and supercharge pump.
2. tensimeter dynamic pressure fatigue test device according to claim 1, it is characterized in that, described dynamic pressure test count loop comprises counter, dual-time relay, proximity switch and the solenoid valve of being with reset button, described counter and the parallel connection of dual-time relay are in the loop, described proximity switch is connected to counter output, solenoid valve is connected to the output terminal of dual-time relay, and the input end of counter output and dual-time relay is provided with the first internal relay and the switch of series connection; Be provided with the second internal relay between described solenoid valve and dual-time relay, described proximity switch is connected with supercharge pump, and solenoid valve connects pressure regulator valve by connecting pipe.
3. test bench described in comprises testing tube, sealing gasket, and described testing tube upper end is provided with the manometric internal thread that is connected, and is provided with the boss installing sealing gasket in testing tube.
4. tensimeter dynamic pressure fatigue test device according to claim 1, it is characterized in that, the connecting pipe that described supercharge pump is connected with test bench is provided with blowdown valve.
5. tensimeter dynamic pressure fatigue test device according to claim 1, is characterized in that, be also provided with the master gauge in parallel with test bench.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410770395.3A CN104535260A (en) | 2014-12-15 | 2014-12-15 | Dynamic pressure fatigue testing device for pressure gage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410770395.3A CN104535260A (en) | 2014-12-15 | 2014-12-15 | Dynamic pressure fatigue testing device for pressure gage |
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| Publication Number | Publication Date |
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| CN104535260A true CN104535260A (en) | 2015-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410770395.3A Pending CN104535260A (en) | 2014-12-15 | 2014-12-15 | Dynamic pressure fatigue testing device for pressure gage |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108151962A (en) * | 2017-12-15 | 2018-06-12 | 芜湖致通汽车电子有限公司 | A kind of method and its testing machine of positive-pressure type simulation vacuum test |
| CN113776729A (en) * | 2021-09-09 | 2021-12-10 | 江西万年芯微电子有限公司 | Pressure sensor reliability test system |
-
2014
- 2014-12-15 CN CN201410770395.3A patent/CN104535260A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108151962A (en) * | 2017-12-15 | 2018-06-12 | 芜湖致通汽车电子有限公司 | A kind of method and its testing machine of positive-pressure type simulation vacuum test |
| CN113776729A (en) * | 2021-09-09 | 2021-12-10 | 江西万年芯微电子有限公司 | Pressure sensor reliability test system |
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| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150422 |
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| WD01 | Invention patent application deemed withdrawn after publication |