CN202956233U - Metallic film interface stress sensor - Google Patents
Metallic film interface stress sensor Download PDFInfo
- 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
- Authority
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- China
- Prior art keywords
- steel bowl
- sensor
- welding
- steel cup
- stress sensor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 40
- 239000010959 steel Substances 0.000 claims abstract description 40
- 238000003466 welding Methods 0.000 claims abstract description 20
- 239000004606 Fillers/Extenders Substances 0.000 claims description 10
- 108010010803 Gelatin Proteins 0.000 claims description 6
- 229920000159 gelatin Polymers 0.000 claims description 6
- 239000008273 gelatin Substances 0.000 claims description 6
- 235000019322 gelatine Nutrition 0.000 claims description 6
- 235000011852 gelatine desserts Nutrition 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 5
- 230000001681 protective Effects 0.000 claims description 5
- 239000012530 fluid Substances 0.000 abstract description 4
- 229920002545 silicone oil Polymers 0.000 abstract description 4
- 238000007711 solidification Methods 0.000 abstract description 2
- 239000000446 fuel Substances 0.000 description 10
- 238000005259 measurement Methods 0.000 description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N silicon Chemical compound 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- 239000010703 silicon Substances 0.000 description 4
- 239000003292 glue Substances 0.000 description 2
- 231100000078 corrosive Toxicity 0.000 description 1
- 231100001010 corrosive Toxicity 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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- 238000001659 ion-beam spectroscopy Methods 0.000 description 1
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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
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.
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Cited By (4)
| 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 |
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2012
- 2012-10-26 CN CN 201220553327 patent/CN202956233U/en active Active
Cited By (5)
| 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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