CN202956233U - Metallic film interface stress sensor - Google Patents

Metallic film interface stress sensor Download PDF

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Publication number
CN202956233U
CN202956233U CN 201220553327 CN201220553327U CN202956233U CN 202956233 U CN202956233 U CN 202956233U CN 201220553327 CN201220553327 CN 201220553327 CN 201220553327 U CN201220553327 U CN 201220553327U CN 202956233 U CN202956233 U CN 202956233U
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China
Prior art keywords
steel bowl
sensor
welding
steel cup
stress sensor
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Active
Application number
CN 201220553327
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Chinese (zh)
Inventor
谢锋
颜志红
谢贵久
何迎辉
蓝镇立
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CETC 48 Research Institute
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CETC 48 Research Institute
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Priority to CN 201220553327 priority Critical patent/CN202956233U/en
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Abstract

The utility model discloses a metallic film interface stress sensor which comprises a steel cup, a patch board arranged on the steel cup, an enamelled wire arranged on the bottom of the steel cup in a pressure welding manner, a housing welded with the steel cup, and an output wire connected with the patch board and passing through the housing. A transition layer, a strain resistance layer, an insulating layer and a protection film layer are sequentially arranged on the bottom of the steel cup from bottom to the top. The stress sensor has a structure, of which the outer convex surface senses pressure, and is small in size. Conventional O-ring and filling silicone oil design are not adopted. The stress sensor solves the problem that a conventional sensor is large in size and poor in resistance to harsh working environment, and reliably measures fluid solidification stress.

Description

A kind of metallic film interfacial stress sensor
Technical field:
Technical field is art of pressure sensors under the utility model, is specially a kind of metallic film interfacial stress sensor for measurement of stress when being applied to some solid interface and being squeezed.
Background technology:
Solid fuel rocket is in filling fuel process, because the fuel solidification shrinkage, will be to propellant bottle cylindrical wall generation of interfaces differential contraction stress, the measurement of this differential contraction stress is conducive to the parameters such as analytical structure intensity, deformability, can, for the deviser provides immediate data, improve design level.
Some measure the sensor that fuel solidifies stress at present, are that silicon chip is put in fuel, and when fuel solidifies, the stressed resistance that makes of silicon chip produces the pressure change, and the variation by detection resistance value detects stress thus.Because silicon chip can not directly contact with oxidisability or corrosive fuel, therefore need to manufacture a separate cavities at the silicon chip front end, with Ha Shi diaphragm contact fuel, in chamber, filling is rushed silicone oil and is played the stress transfer function.Therefore, this size sensor is larger, can not accurately measure the stress of interface, and can not measure high temperature and low temp fuel.
Develop a kind of metallic film strain gauge very necessary, it has, and volume is little, precision is high, operating temperature range is wide, the characteristics such as little of drifting about, and is the ideal transducer that fluid solidifies stress measurement.
The utility model patent discloses a kind of metallic film interfacial stress sensor that solidifies stress measurement for fuel.
Summary of the invention:
The purpose of this utility model is a kind of metallic film interfacial stress sensor of design, overcomes that all volumes of traditional metering system are large, size is thick, can not survey high low temp fuel, and temperature is floated large drawback.
The utility model solves the technical scheme that its technical matters adopts:
Referring to Fig. 1 and Fig. 2, described metallic film interfacial stress sensor comprises steel bowl 1, is located at the card extender 2 on steel bowl 1, and pressure welding, in the enameled wire 3 of steel bowl 1 bottom, with the shell 4 of steel bowl 1 welding, is connected and passes the output line 5 of shell 4 with card extender 2; Described steel bowl 1 inner bottom surface is provided with transition bed 8 from bottom to up successively, electrostrictive strain resistance layer 9, insulation course 10 and protective film 11.
In addition, described card extender 2 is adhered on steel bowl 1 by special gelatin 6; Described steel bowl 1 outer wall is provided with welding step 7, and shell 4 is by welding step 7 and steel bowl 1 welding; Described steel bowl 1 height is 2 ± 0.1mm, and described welding step 7 height are 0.5 ± 0.05mm; The outside bottom surface of described steel bowl 1 is a convex surface.Wherein, described special gelatin can be commercially available AB glue.
Compared with prior art, the beneficial effects of the utility model are:
The utility model volume is little, is only Φ 15mm 2* 5mm; Its steel bowl bottom has deposited transition bed, electrostrictive strain resistance layer, insulation course and protective film by the mode of ion beam sputtering deposition; described steel bowl is done the used time being subject to interfacial stress; deformation can occur, and can cause electrostrictive strain resistance layer generation deformation, thereby complete the measurement to interfacial stress.Steel bowl is experienced interfacial stress by outer convex surface, is different from traditional inner concave pressurized mode.
In the utility model, without traditional O type circle and fill tank silicone oil, all material can bear-196 ℃~200 ℃ temperature ranges, the various severe working environments of ability.
The utility model precision is high, temperature is floated littlely, is the ideal transducer that fluid solidifies stress measurement.
In a word, the utility model is due to the structural design that has adopted outer convex surface pressure-sensitive, and structural volume is little, cancelled traditional O type circle and and fill tank silicone oil design, the physical dimension that has solved traditional sensors is large, and the problem of anti-severe working environment poor performance has realized that fluid solidifies the reliable measurements of stress.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the utility model steel bowl structural representation.
In figure: dimensioning unit of institute is mm; 1, steel bowl; 2, card extender; 3, enameled wire; 4, shell; 5, output line; 6, special gelatin; 7, welding step; 8, transition bed; 9, electrostrictive strain resistance layer; 10, insulation course; 11, protective film.
Embodiment
Referring to Fig. 1 and Fig. 2, described metallic film interfacial stress sensor comprises steel bowl 1, is located at the card extender 2 on steel bowl 1, and pressure welding, in the enameled wire 3 of steel bowl 1 bottom, with the shell 4 of steel bowl 1 welding, is connected and passes the output line 5 of shell 4 with card extender 2; Described steel bowl 1 inner bottom surface is provided with transition bed 8 from bottom to up successively, electrostrictive strain resistance layer 9, insulation course 10 and protective film 11.
Wherein, described card extender 2 is adhered on steel bowl 1 by special gelatin 6; Described steel bowl 1 outer wall is provided with welding step 7, and shell 4 is by welding step 7 and steel bowl 1 welding; The high 2mm of described steel bowl 1, the high 0.5mm of described welding step; The outside bottom surface of described steel bowl 1 is a convex surface; Described special gelatin 6 is AB glue.

Claims (5)

1. a metallic film interfacial stress sensor, it is characterized in that, described sensor comprises steel bowl (1), be located at the card extender (2) on steel bowl (1), pressure welding is in the enameled wire (3) of steel bowl (1) bottom, with the shell (4) of steel bowl (1) welding, be connected and pass the output line (5) of shell (4) with card extender (2); Described steel bowl (1) inner bottom surface is provided with transition bed (8) from bottom to up successively, electrostrictive strain resistance layer (9), insulation course (10) and protective film (11).
2. sensor as claimed in claim 1, is characterized in that, described card extender (2) is adhered on steel bowl (1) by special gelatin (6).
3. sensor as claimed in claim 1, is characterized in that, described steel bowl (1) outer wall is provided with welding step (7), and shell (4) is by welding step (7) and steel bowl (1) welding.
4. sensor as claimed in claim 1, is characterized in that, described steel bowl (1) height is 2 ± 0.1mm, and described welding step (7) height is 0.5 ± 0.05mm.
5. sensor as described as claim 1 to 4 any one, is characterized in that, the outside bottom surface of described steel bowl (1) is a convex surface.
CN 201220553327 2012-10-26 2012-10-26 Metallic film interface stress sensor Active CN202956233U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220553327 CN202956233U (en) 2012-10-26 2012-10-26 Metallic film interface stress sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220553327 CN202956233U (en) 2012-10-26 2012-10-26 Metallic film interface stress sensor

Publications (1)

Publication Number Publication Date
CN202956233U true CN202956233U (en) 2013-05-29

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103822736A (en) * 2014-03-24 2014-05-28 重庆大学 Method for determining membrane stress value of periphery clamped circular membrane under effect of concentrated force
CN104764554A (en) * 2015-04-22 2015-07-08 中国工程物理研究院总体工程研究所 Sputtering thin film type pore water pressure sensor
CN108132115A (en) * 2017-12-22 2018-06-08 北京中航兴盛测控技术有限公司 A kind of diaphragm pressure sensor chip and manufacturing method
CN111579144A (en) * 2020-04-08 2020-08-25 中国海洋大学 Synchronous measurement device and method for double-dispersion interface pressure in emulsion and application

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103822736A (en) * 2014-03-24 2014-05-28 重庆大学 Method for determining membrane stress value of periphery clamped circular membrane under effect of concentrated force
CN103822736B (en) * 2014-03-24 2016-01-27 重庆大学 A kind of method determining membrane stress value under the circular membrane concentrated force that periphery clamps
CN104764554A (en) * 2015-04-22 2015-07-08 中国工程物理研究院总体工程研究所 Sputtering thin film type pore water pressure sensor
CN108132115A (en) * 2017-12-22 2018-06-08 北京中航兴盛测控技术有限公司 A kind of diaphragm pressure sensor chip and manufacturing method
CN111579144A (en) * 2020-04-08 2020-08-25 中国海洋大学 Synchronous measurement device and method for double-dispersion interface pressure in emulsion and application

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