CN103712740B - Flat pressure sensor dynamic high-pressure calibrating installation - Google Patents
Flat pressure sensor dynamic high-pressure calibrating installation Download PDFInfo
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- CN103712740B CN103712740B CN201410009950.0A CN201410009950A CN103712740B CN 103712740 B CN103712740 B CN 103712740B CN 201410009950 A CN201410009950 A CN 201410009950A CN 103712740 B CN103712740 B CN 103712740B
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Abstract
The invention discloses a kind of flat pressure sensor dynamic high-pressure calibrating installation, it comprises sealing charger two parts of drop hammer hydraulic high-pressure generating means and flat pressure sensor, and the described hydraulic high-pressure generating means that drops hammer comprises electric machine assembly, bracket component, steel wire rope, magnet assemblies, weight, pressure generator assembly and standard pressure transducer; The sealing charger of described flat pressure sensor comprises reaction frame, calibration pedestal, hydraulic oil, sealing gasket, by the flat pressure sensor in school, briquetting, jack and oil pump; Hydraulic oil in described pressure generator assembly chamber is by the UNICOM of the hydraulic oil in tube connector and calibration pedestal chamber, and the pressure producing in pressure generator assembly is transmitted to by the pressure-sensitive face of the flat pressure sensor in school by the tube connector of hydraulic oil UNICOM. The present invention is based on drop hammer type calibration of hydraulic pressure method, combination seal charger, can realize the dynamic high-pressure calibration of flat pressure sensor.
Description
Technical field
The invention belongs to metrological testing technology field, particularly relate to a kind of flat pressure sensor dynamic high-pressure collimation technique and device.
Background technology
In research fields such as engineering protection, weapons development, explosion mechanicses, often need to carry out the dynamic high-pressure power of hundreds of MPas and measure. Must be through calibration, to obtain the moving Static State Index such as sensitivity, frequency response of sensor or whole sensor-based system before measuring at the scene for the wide range pressure sensor of these occasions. For the pressure sensor of conventional screw-type structure, in the time of calibration, can directly be connected on pressure generator matrix by screw thread. But, in the pressure measxurement occasion that is not easy to maybe can not use helicitic texture, as blast pressure measurement in ground, concrete medium and other nonmetallic materials etc., be widely used the pressure sensor of flat structure, due to the relation of sensor shape and lead-in wire, the difficult problem of this sensor in the time that how when calibration brings pressure to bear on sensor sensing face and be calibration always. Inventor there is not yet the device or the research report that can be used for flat pressure sensor dynamic high-pressure calibration at present.
Conventional a kind of pressure calibration device is the fluid pressure type calibrating installation that drops hammer both at home and abroad, its operation principle is, along the weight of guidance system free-falling, gravitional force is converted into kinetic energy, bump against with the precise piston on oil cylinder top subsequently, by the in-oil cylinder liquid of piston compression, in oil cylinder, produce pressure, thereby the kinetic energy of weight is converted into again to the elastic potential energy of hydraulic oil cubic deformation. In the time that kinetic energy all transforms, weight and piston reach maximum compression stroke, and it is maximum that in-oil cylinder pressure reaches, and due to the elasticity restitution of hydraulic oil, pushing away on piston and weight, until weight jumps out of piston, elastic potential energy is converted into again weight kinetic energy thereafter. In oil cylinder, form like this one and be similar to semisinusoidal pressure pulse. This device can be by changing pressure peak and pressure pulsewidth to weight quality, drop height, original volume, the isoparametric adjustment of piston area, easily obtain high pressure, and the load time is short, be conducive to improve the service life of sensor, can be used for amplitude and uniformity in waveform calibration, can test to the dynamic practicality of sensor simultaneously.
Summary of the invention
The object of this invention is to provide a kind of flat pressure sensor dynamic high-pressure calibrating installation, this device is based on drop hammer type calibration of hydraulic pressure method, in conjunction with the sealing charger of particular design, can realize the dynamic high-pressure calibration of flat pressure sensor, and this device have the advantages such as base measuring pressure wide ranges, precision are high, simple to operate, easy to use.
Object of the present invention can adopt following technical scheme to realize: described flat pressure sensor dynamic high-pressure calibrating installation comprises sealing charger two parts of drop hammer hydraulic high-pressure generating means and flat pressure sensor, the described hydraulic high-pressure generating means that drops hammer comprises electric machine assembly, bracket component, steel wire rope, magnet assemblies, weight, pressure generator assembly and standard pressure transducer, bracket component at right angle setting fixes on the ground, at the top of bracket component mounted motor assembly, steel wire rope one end is connected with electric machine assembly, the other end connects magnet assemblies, all there is circular pilot hole magnet assemblies and weight both sides, the support post of bracket component passes magnet assemblies and weight by pilot hole, pressure generator assembly is arranged on the pedestal of bracket component bottom, standard pressure transducer is arranged on the sensor interface of pressure generator assembly, the sealing charger of described flat pressure sensor comprises reaction frame, calibration pedestal, hydraulic oil, sealing gasket, by the flat pressure sensor in school, briquetting, jack and oil pump, be fixed on calibration pedestal by the flat pressure sensor in school, place sealing gasket between the two, hydraulic jack and calibration pedestal are all installed in reaction frame bottom, and the pretightning force that piston rod of hydraulic jack applies acts on by the flat pressure sensor end face in school by briquetting, hydraulic oil in described pressure generator assembly chamber is by the UNICOM of the hydraulic oil in tube connector and calibration pedestal chamber, the pressure producing in pressure generator assembly is transmitted to by the pressure-sensitive face of the flat pressure sensor in school by the tube connector of hydraulic oil UNICOM, realizes base measuring pressure and loads.
Described bracket component comprises base, column, top board and foundation bolt, and column is arranged on base, is arranged on column upper end for the top board of fixing assembling stepper motor, and base fixes on the ground by foundation bolt.
Described weight comprises basic hammer body and counterweight two parts, on basic hammer body, has pilot hole, and the column of described bracket component, through pilot hole, is bolted between counterweight and basic hammer body.
Flat pressure sensor dynamic high-pressure calibrating installation of the present invention, make full use of the advantage of the hydraulic high-pressure calibration steps that drops hammer, according to the feature of flat pressure sensor, design and produce the special fixtures that is exclusively used in flat pressure sensor, realize the successful loading of base measuring pressure; Use the method for hydraulic jack and reaction frame combination, solve common Leakage in calibration of hydraulic pressure method, ensured the accuracy of base measuring pressure, this device provides a kind of simple and convenient accurate reliably dynamic high-pressure calibration steps again for flat pressure sensor.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
In Fig. 1: 1, electric machine assembly, 2, bracket component, 3, steel wire rope, 4, magnet assemblies, 5, weight, 6, pressure generator assembly, 7, standard pressure transducer, 8, tube connector, 9, reaction frame assembly, 10, calibration pedestal, 11, hydraulic oil, 12, sealing gasket, 13, by the flat sensor in school, 14, briquetting, 15, jack, 16, hand oil pump.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the invention is described.
Referring to Fig. 1, flat pressure sensor dynamic high-pressure calibrating installation of the present invention, comprise two large divisions, a part is the hydraulic high-pressure generating means that drops hammer, by electric machine assembly 1, bracket component 2, steel wire rope 3, magnet assemblies 4, weight 5, pressure generator assembly 6, standard pressure transducer 7 forms, bracket component 2 at right angle settings fix on the ground, at the top of bracket component 2 mounted motor assembly 1, steel wire rope 3 one end are connected with electric machine assembly 2, the other end connects magnet assemblies 4, all there is circular pilot hole magnet assemblies 4 and weight 5 both sides, the support post of bracket component 2 passes magnet assemblies 4 and weight 5 by pilot hole, pressure generator assembly 6 is arranged on the pedestal of bracket component 2 bottoms, standard pressure transducer 7 is arranged on the standard interface of pressure generator assembly 6, another part is the sealing charger of flat pressure sensor, by reaction frame assembly 9, calibration pedestal 10, hydraulic oil 11, sealing gasket 12, by the flat pressure sensor 13 in school, briquetting 14, jack 15, hand oil pump 16 forms, be fixed on calibration pedestal 10 by the flat pressure sensor 13 in school, place sealing gasket 12 between the two, hydraulic jack 15 and calibration pedestal 10 are all installed on reaction frame, the pretightning force that the piston rod of hydraulic jack 15 applies acts on by flat pressure sensor 13 end faces in school by briquetting 14, realize the excellent sealing to oil pocket. this two large divisions realizes the UNICOM of both intraluminal fluid force feeds 11 by tube connector 8, the pressure of pressure generator assembly 6 interior generations is transmitted to by the pressure-sensitive face of the flat pressure sensor 13 in school by the tube connector 8 of hydraulic oil 11 UNICOMs simultaneously, realizes base measuring pressure and loads.
Described electric machine assembly 1 comprises driving governor, laser displacement sensor, the single-chip computer control system of stepper motor, stepper motor, and its major function is to utilize laser displacement sensor to measure the position of described weight, make described weight stop at setting height by single-chip computer control system control step motor. Described pressure generator assembly 6 comprises piston rod, pressure generator matrix, potted component, is reserved with multiple standard thread interfaces on pressure generator matrix. Described is adopted patty by the flat pressure sensor profile in school. Described bracket component 2 comprises base, support post, top board and foundation bolt, and support post is arranged on base, is arranged on column upper end for the top board of fixing assembling stepper motor, and base fixes on the ground by foundation bolt. Described weight 5 comprises basic hammer body and counterweight two parts, on basic hammer body, has pilot hole, and the support post of described bracket component 2 links together by pilot hole, basic hammer body can be on support post along vertically to slip; Between the counterweight of different quality and basic hammer body, link together reliably by bolt, obtain calibrating the weight of required different quality. Described magnet assemblies 4 comprises electromagnet and magnet control system.
While utilizing this device to carry out flat pressure sensor dynamic high-pressure calibration, first standard pressure transducer 7 is arranged on the standard interface of pressure generator assembly 6, by the flat pressure sensor 13 being calibrated be arranged on its calibration pedestal 10 on, utilize hand oil pump 16 and jack 15 by briquetting 14 to being carried out precompressed and sealing by the flat pressure sensor 13 in school. pressure generator assembly 6 is positioned at the base central authorities of bracket component 2, after magnet assemblies 4 energisings, hold weight 5, on the single-chip microcomputer of automatic control system, input the height of the fall value that wish promotes, control system control step electric machine rotation after confirming, after making weight 5 rise to predetermined height by spool lay winding wire ropes 3, automatically stop, then operate magnet control system and make electromagnet power-off, electromagnet and weight 5 depart from, piston on weight 5 free-fallings and pressure generator assembly 6 bumps, in pressure generator, produce semisinusoidal type pulse, this pulse acts on standard pressure transducer and the flat pressure sensor that is calibrated simultaneously, detect the output of these two sensors simultaneously, and to record two groups of data analysis comparisons, can obtain the various dynamic and static state performances for the treatment of the flat pressure sensor in school. in addition, this device also can be used for calibrating screw-type pressure sensor, only need to change the tube connector 7 being connected on pressure generator assembly 6 into be calibrated screw-type pressure sensor. at present, the maximum base measuring pressure that this device can obtain is 1000MPa, pressure pulse width 0.5～10ms.
Claims (4)
1. a flat pressure sensor dynamic high-pressure calibrating installation, it is characterized in that: it comprises sealing charger two parts of drop hammer hydraulic high-pressure generating means and flat pressure sensor, the described hydraulic high-pressure generating means that drops hammer comprises electric machine assembly, bracket component, steel wire rope, magnet assemblies, weight, pressure generator assembly and standard pressure transducer, bracket component at right angle setting fixes on the ground, at the top of bracket component mounted motor assembly, steel wire rope one end is connected with electric machine assembly, the other end connects magnet assemblies, all there is circular pilot hole magnet assemblies and weight both sides, the support post of bracket component passes magnet assemblies and weight by pilot hole, pressure generator assembly is arranged on the pedestal of bracket component bottom, standard pressure transducer is arranged on the sensor interface of pressure generator assembly, the sealing charger of described flat pressure sensor comprises reaction frame, calibration pedestal, hydraulic oil, sealing gasket, by the flat pressure sensor in school, briquetting, jack and oil pump, be fixed on calibration pedestal by the flat pressure sensor in school, place sealing gasket between the two, jack and calibration pedestal are arranged on reaction frame bottom, and the pretightning force that piston rod of hydraulic jack applies acts on by the flat pressure sensor end face in school by briquetting, hydraulic oil in described pressure generator assembly chamber is by the UNICOM of the hydraulic oil in tube connector and calibration pedestal chamber, the pressure producing in pressure generator assembly is transmitted to by the pressure-sensitive face of the flat pressure sensor in school by the tube connector of hydraulic oil UNICOM, realizes base measuring pressure and loads.
2. flat pressure sensor dynamic high-pressure calibrating installation according to claim 1, it is characterized in that: described bracket component comprises base, column, top board and foundation bolt, column is arranged on base, top board for fixing assembling stepper motor is arranged on column upper end, and base fixes on the ground by foundation bolt.
3. flat pressure sensor dynamic high-pressure calibrating installation according to claim 1, it is characterized in that: described weight comprises basic hammer body and counterweight two parts, on basic hammer body, there is pilot hole, the column of described bracket component, through pilot hole, is bolted between counterweight and basic hammer body.
4. flat pressure sensor dynamic high-pressure calibrating installation according to claim 1, is characterized in that: described is adopted patty by the flat pressure sensor profile in school.
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| CN201410009950.0A CN103712740B (en) | 2014-01-09 | 2014-01-09 | Flat pressure sensor dynamic high-pressure calibrating installation |
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| CN201410009950.0A CN103712740B (en) | 2014-01-09 | 2014-01-09 | Flat pressure sensor dynamic high-pressure calibrating installation |
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| CN103712740B true CN103712740B (en) | 2016-05-18 |
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Families Citing this family (9)
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| CN104535258B (en) * | 2015-01-05 | 2017-01-04 | 广州赛宝计量检测中心服务有限公司 | A kind of dynamic force automatic calibration of sensor device |
| CN105403359B (en) * | 2015-12-05 | 2018-10-26 | 浙江大学 | Miniature small-range pore water pressure sensor simple calibrating device in aqueous medium |
| CN106092437B (en) * | 2016-06-06 | 2019-01-22 | 北京航空航天大学 | A kind of small-sized piezoelectric dynamic force sensor caliberating mechanism |
| CN106525331B (en) * | 2016-11-25 | 2022-09-30 | 中国人民解放军61489部队 | Pen type free field pressure sensor calibration device |
| CN107702851B (en) * | 2017-02-19 | 2023-09-15 | 蚌埠市长达力敏仪器有限责任公司 | Bolt simulator and torque spanner calibrating device |
| CN109946018A (en) * | 2019-04-25 | 2019-06-28 | 黑龙江大学 | A kind of dynamic calibration apparatus of the adjustable fibre optic compression sensor of range |
| CN111998995B (en) * | 2020-09-06 | 2022-02-18 | 南京理工大学 | Buffer for quasi-static calibration of minimum-range pressure system and design method |
| CN113820068A (en) * | 2021-09-14 | 2021-12-21 | 河南省计量科学研究院 | Dynamic calibration device of soil pressure gauge |
| CN114397004B (en) * | 2022-01-18 | 2022-07-19 | 凯晟动力技术（嘉兴）有限公司 | High-temperature-resistant pressure sensor calibration device and use method thereof |
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| CN201421387Y (en) * | 2009-06-02 | 2010-03-10 | 中国船舶重工集团公司第七一三研究所 | Calibration device for high-range dynamic pressure sensor |
| CN103143597A (en) * | 2013-01-31 | 2013-06-12 | 上海飞机制造有限公司 | Pre-stressing clamp for laser peening formation of workpiece |
| CN103245458A (en) * | 2013-04-07 | 2013-08-14 | 北京机械设备研究所 | Half-sine quasi-static calibration device of force sensor |
| CN203643082U (en) * | 2014-01-09 | 2014-06-11 | 中国人民解放军总参谋部工程兵科研三所 | Dynamic high pressure calibration device of flat type pressure sensor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3316491B2 (en) * | 2000-04-11 | 2002-08-19 | 昭 前川 | Hydraulic control valve for measurement that offsets small errors due to oil flow rate |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201421387Y (en) * | 2009-06-02 | 2010-03-10 | 中国船舶重工集团公司第七一三研究所 | Calibration device for high-range dynamic pressure sensor |
| CN103143597A (en) * | 2013-01-31 | 2013-06-12 | 上海飞机制造有限公司 | Pre-stressing clamp for laser peening formation of workpiece |
| CN103245458A (en) * | 2013-04-07 | 2013-08-14 | 北京机械设备研究所 | Half-sine quasi-static calibration device of force sensor |
| CN203643082U (en) * | 2014-01-09 | 2014-06-11 | 中国人民解放军总参谋部工程兵科研三所 | Dynamic high pressure calibration device of flat type pressure sensor |
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