CN202853821U - Carbon resistance type high pressure sensor - Google Patents
Carbon resistance type high pressure sensor Download PDFInfo
- Publication number
- CN202853821U CN202853821U CN 201220560695 CN201220560695U CN202853821U CN 202853821 U CN202853821 U CN 202853821U CN 201220560695 CN201220560695 CN 201220560695 CN 201220560695 U CN201220560695 U CN 201220560695U CN 202853821 U CN202853821 U CN 202853821U
- Authority
- CN
- China
- Prior art keywords
- housing
- carbon
- sensitive element
- carbon resistance
- filler
- 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.)
- Withdrawn - After Issue
Links
Images
Abstract
The utility model discloses carbon resistance type high pressure sensor, which is composed of a shell (1), a diaphragm (2), a carbon resistance type sensitive element (3), a filler (4), a leading wire tube (5) and a leading wire (6), wherein the carbon resistance type sensitive element (3) is buried in a cavity of the shell (1) in a sealing manner through the filler (4) and the diaphragm (2), the leading wire tube (5) is arranged in the shell (1), one end of the leading wire (6) is connected with the carbon resistance type sensitive element (3), and the other end of the leading wire (6) is led out from the leading wire tube (5). The pressure is transmitted to the carbon resistance type sensitive element through the diaphragm and the filler, and the measurement of the pressure is realized through detecting the variations of the resistance of a carbon resistance element. The high pressure sensor disclosed by the utility model has the advantages of simple structure, reliable performance, low cost and the like. The main component of the filler is brown fused alumina, the strength is high, and the transmission loss of the pressure is low, thereby being suitable for dynamic and static pressure measurement, and having a wide application prospect.
Description
Technical field
The utility model belongs to field of sensing technologies, particularly relates to a kind of carbon resistance formula high pressure sensor of wide range.
Background technology
In national economy and national defense construction field, particularly war production and strategy and tactics weapon development test aspect, often need to measure high pressure, the high pressure especially test of dynamic high-pressure is related to the weapons and ammunitions development, the aerospace vehicle emission, material antiknock and engineering protection test, blast working, the height of new material is pressed into, the research of the association areas such as material constitutive relation, therefore the extremely concern of countries in the world researcher and become for a long time scientific research focus, and developed relevant multiple measuring technique, such as electrical measurement (such as dynamic strain measuring the most widely), flash ranging is (such as high-speed photography, dynamic moire, photoelastic etc.), photoelectric comprehensive is (such as laser velocimeter VISAR technology, the photoelectricity tens(i)ometer, X ray strobo photography etc.), electromagnetism is comprehensive, and (the electromagnetism ring tests the speed, probe) etc.
High pressure is measured method commonly used copper post manometry, piezoelectric transducer manometry, piezoresistive transducer manometry, and wherein piezoresistive transducer is to utilize the variation of resistance sensing element of pressure resistance value under the effect of compressive stress to determine by measuring pressure.Many metals, alloy and semiconductor material all have piezoresistive, i.e. variation that can the value of having a resistance after the material effect of being under pressure, and wherein the variation of resistance value mainly is that change in resistance by material causes.Silicon is the most frequently used pressure drag material, is used widely by the pressure transducer of its manufacturing, but is limited to the characteristic of silicon materials, and it can not be used for the high pressure force measurement.The material that can be used as pressure drag component has copper-manganese, calcium, lithium, bismuth, carbon, ytterbium etc.Copper-manganese is the pressure drag material that is used to the earliest measure static high pressure power and detonation wave pressure and material internal stress, but the piezoresistance coefficient of copper-manganese is very low, and (in the hundreds of MPa) resistance variations is insensitive under low-pressure.Researcher has carried out a large amount of research to the piezoresistive effect of metallic ytterbium (Yb), the advantage of utilizing ytterbium to make piezoresistive transducer is that sensitivity coefficient is high, the piezoresistance coefficient of ytterbium is about 30 times of copper-manganese, but the purity of ytterbium material is the key factor that affects its piezoresistance coefficient repeatability, and ytterbium is a kind of rare earth element, chemical property is more active, easily oxidation, affect the purity of ytterbium after the oxidation, therefore the performance index such as the processing of ytterbium piezoresistive transducer and repeatability are difficult to be guaranteed, and this has affected applying of ytterbium piezoresistive transducer greatly.The sensitive material of carbon piezoresistive transducer is the potpourri of graphite, carbon black, terpinol, phenolics, contracting butanols etc., since Watson proves that first carbon resistance has piezoresistive effect and gone forward side by side since the horizontal high voltage calibration, Many researchers has been carried out experimental study to the performance of this carbon resistance formula pressure transducer, there are membrane type and carbon to hinder two kinds of formulas according to the different carbon resistance formula of version pressure transducer, wherein membrane type carbon pressure resistance sensor adopts thin-film technique to be prepared into the grid type structure, size is little, response is fast, but its processing technology is complicated, has limited its extensive application.Carbon resistance formula sensor is cylindrical conventional, electric-resistance formula structure, and processing and fabricating is convenient, and cost is low.The characteristics of carbon resistance formula sensor are that antijamming capability is strong, and thermal characteristics is good, and highly sensitive (than a large order of magnitude of copper-manganese) is comparatively ideal high-tension measurement sensor.
In fields such as explosion mechanics, weapon effect test researchs, the user demand of wide range pressure transducer is more, and in these fields, test normally destructive, the normally disposable use of sensor, therefore require the cost of sensor low, but wide range pressure transducer price general charged is higher, so the big pressure sensor of developing low-cost is very necessary.Carbon pressure power sensor has the potentiality that reduce high pressure sensor cost, but at present, carbon pressure power sensor at home research and use less.
Summary of the invention
The purpose of this utility model provides a kind of carbon resistance formula high pressure sensor, and it is simple in structure that it is had, dependable performance, and the characteristics such as cost is low are suitable for wide range, cheaply pressure survey.
The purpose of this utility model can adopt following technical scheme to realize:
Carbon resistance formula high pressure sensor of the present utility model is to be made of housing, diaphragm, carbon resistance formula sensitive element, filler, fairlead and lead-in wire, carbon resistance formula sensitive element is embedded in the cavity of housing by filler and diaphragm seal, fairlead is arranged in the housing, the end that goes between is connected the formula sensitive element and connects with carbon, the other end is drawn from fairlead, and diaphragm seal is on the housing of carbon resistance formula sensitive element outside.
Housing global shape described in the utility model is cylindrical, carbon resistance formula sensitive element is arranged on the front end of housing, and housing front end outer setting has connecting thread, and outstanding position, middle part is provided with a ring-shaped groove, fairlead is arranged on the rear portion of housing, and lead-in wire is drawn from the rear portion of housing.
Housing described in the utility model is flat structure, and carbon resistance formula sensitive element is embedded in the cavity at housing middle part by filler, and fairlead is arranged on a side of housing, and lead-in wire is drawn from the housing sidepiece.
Between diaphragm described in the utility model and the housing by laser bonding.
Filler described in the utility model is the high strength mixture that brown fused alumina micropowder and glue form.
The beneficial effects of the utility model are as follows:
High pressure sensor described in the utility model mainly is comprised of housing, diaphragm and filler etc., and simple and reliable for structure, the principal ingredient of filler is brown corundum, and intensity is high, and is little to the transmission loss of pressure, is suitable for the measurement of high dynamic pressure.Adopt this kind encapsulating structure, be conducive to the calibration of sensor and install and use.The sensor sensing element adopts cheaply carbon resistance component, and measuring principle is simple, and supporting measuring system is easy.High pressure sensor of the present utility model has simple in structure, dependable performance, and the advantage such as with low cost is with a wide range of applications.
Description of drawings
Fig. 1 is present embodiment 1 structural representation.
Fig. 2 is embodiment 2 structural representations.
Among the figure: 1, housing, 2, diaphragm, 3, carbon resistance formula sensitive element, 4, filler, 5, fairlead, 6, lead-in wire.
Embodiment
By reference to the accompanying drawings, specific embodiment of the utility model is described.
Embodiment 1:
With reference to the accompanying drawings 1, the high pressure sensor of screw connection structure of the present utility model is mainly by housing 1, diaphragm 2, carbon resistance formula sensitive element 3, filler 4, fairlead 5 with go between and 6 consist of, carbon resistance formula sensitive element 3 is embedded in the cavity of housing 1 by filler, fairlead 5 is arranged in the housing, 6 one ends that go between are connected the formula sensitive element and connect with carbon, the other end is drawn from fairlead 5, and diaphragm seal is on the housing of carbon resistance formula sensitive element outside.Described housing 1 global shape is cylindrical, and carbon resistance formula sensitive element is arranged on the front end of housing 1, and housing 1 front end outer setting has connecting thread, the middle part has a projecting platform, be provided with a ring-shaped groove on it, fairlead 5 is arranged on the rear portion of housing, and lead-in wire 6 is drawn from the rear portion of housing 1.
Be full of the filler 4 that is formed by brown fused alumina micropowder and glue around the carbon resistance component 3 in described housing 1 cavity, filler is full of bonnet upper diaphragm 2, and fixes fairlead 5 and lead-in wire 6 with glue; After the colloid mixture of brown fused alumina micropowder and glue formation solidifies, again diaphragm 2 and housing 1 are used laser bonding.Can place the red copper pad in the ring groove on the housing, end face installation high-voltage sealing when being used for pick up calibration and use.Wherein carbon resistance formula sensitive element 3 is the potpourri of graphite, carbon black, terpinol, phenolics, contracting butanols etc., makes it have certain resistance value by the content of controlling carbon, and the size of resistance value changes with the variation of pressure; Adopt above-mentioned steps namely to finish the processing and fabricating of described sensor.
Embodiment 2:
With reference to the accompanying drawings 2, the high pressure sensor of flat structure of the present utility model is mainly by housing 1, diaphragm 2, carbon resistance component 3, filler 4, fairlead 5 with go between and 6 consist of.1 one-tenth flat structure of described housing, be processed with a cavity in housing 1, carbon resistance formula sensitive element 3 is embedded in by filler in the cavity of housing 1, and fairlead 5 is arranged in the housing, 6 one ends that go between are connected the formula sensitive element and connect with carbon, the other end is drawn from the side of housing 1 by fairlead 5.Be full of the filler 4 that is formed by brown fused alumina micropowder and glue around the carbon resistance component 3 in housing 1 cavity, filler is full of bonnet upper diaphragm 2, and fixes fairlead 5 and lead-in wire 6 with glue; After the colloid mixture of brown fused alumina micropowder and glue formation solidifies, again diaphragm 2 and housing 1 are used laser bonding.Adopt above-mentioned steps namely to finish the processing and fabricating of described sensor.
Above-mentioned two embodiment pressure when measuring is delivered to carbon resistance formula sensitive element 3 by diaphragm 2 and filler 4, thereby causes the change in resistance of carbon resistance formula sensitive element 3.At first obtain the change in resistance size of carbon resistance component 3 and the relation curve of pressure by calibration, converse by the size of measuring pressure by the change in resistance that detects carbon resistance component 3 during measurement.
Claims (4)
1. a carbon hinders formula high pressure sensor, it is characterized in that: it is made of housing (1), diaphragm (2), carbon resistance formula sensitive element (3), filler (4) fairlead (5) and lead-in wire (6), carbon resistance formula sensitive element (3) is embedded in the cavity of housing (1) by filler (4) and diaphragm (2) sealing, fairlead (5) is arranged in the housing (1), lead-in wire (6) one ends are connected formula sensitive element (3) and connect with carbon, the other end is drawn from fairlead (5).
2. carbon according to claim 1 hinders formula high pressure sensor, it is characterized in that: described housing (1) global shape is cylindrical, carbon resistance formula sensitive element (3) is arranged on the front end of housing (1), housing (1) front end outer setting has connecting thread, the middle part has projecting platform, be provided with a ring-shaped groove on it, fairlead (5) is arranged on the rear portion of housing, and lead-in wire (6) is drawn from the rear portion of housing.
3. carbon according to claim 1 hinders formula high pressure sensor, it is characterized in that: described housing (1) is flat structure, carbon resistance formula sensitive element (3) is embedded in the cavity at housing middle part by filler (4), and fairlead is arranged on a side of housing, and lead-in wire is drawn from the housing sidepiece.
4. carbon according to claim 1 resistance formula high pressure sensor is characterized in that: between described diaphragm and the housing by laser bonding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220560695 CN202853821U (en) | 2012-10-30 | 2012-10-30 | Carbon resistance type high pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220560695 CN202853821U (en) | 2012-10-30 | 2012-10-30 | Carbon resistance type high pressure sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202853821U true CN202853821U (en) | 2013-04-03 |
Family
ID=47985005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220560695 Withdrawn - After Issue CN202853821U (en) | 2012-10-30 | 2012-10-30 | Carbon resistance type high pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202853821U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102928134A (en) * | 2012-10-30 | 2013-02-13 | 中国人民解放军总参谋部工程兵科研三所 | Carbon-resistance high pressure sensor |
| CN111795770A (en) * | 2020-05-19 | 2020-10-20 | 北京航空航天大学 | Pressure probe for measuring fluid pulse dynamic pressure |
-
2012
- 2012-10-30 CN CN 201220560695 patent/CN202853821U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102928134A (en) * | 2012-10-30 | 2013-02-13 | 中国人民解放军总参谋部工程兵科研三所 | Carbon-resistance high pressure sensor |
| CN102928134B (en) * | 2012-10-30 | 2014-10-15 | 中国人民解放军总参谋部工程兵科研三所 | Carbon-resistance high pressure sensor |
| CN111795770A (en) * | 2020-05-19 | 2020-10-20 | 北京航空航天大学 | Pressure probe for measuring fluid pulse dynamic pressure |
| CN111795770B (en) * | 2020-05-19 | 2021-07-16 | 北京航空航天大学 | Pressure probe for measuring fluid pulse dynamic pressure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101659528B1 (en) | Universal pressure sensor for automobile | |
| CN101718605B (en) | Sensor for measuring pressure of water in soil at bottom of dam, river and lake and measuring method | |
| CN202141554U (en) | Ceramic structure metal sensitive diaphragm capacitance pressure transducer | |
| CN104458073A (en) | Implantable concrete three-dimensional space stress monitoring sensor | |
| CN208833416U (en) | A kind of high temperature modification film absolute pressure sensor | |
| CN202853821U (en) | Carbon resistance type high pressure sensor | |
| CN102928134B (en) | Carbon-resistance high pressure sensor | |
| CN103712730B (en) | A kind of fiber grating dynamic high-pressure sensor | |
| CN1140782C (en) | High-temperature pressure sensor | |
| CN207636232U (en) | A kind of strain-type differential pressure pickup | |
| CN205138672U (en) | Quick response fiber grating temperature sensor steady in a long -term | |
| CN201535706U (en) | Permeable membrane soil hydraulic pressure sensor | |
| CN103439034A (en) | Multifunctional force cell sensor | |
| CN105758576B (en) | A kind of Lazer's sensing unit pen type free-field blast pressure "pencil" sensor | |
| CN103438817B (en) | Realize accurately measuring the Fibre Optical Sensor of metal stresses strain | |
| CN105784252B (en) | A kind of overall structure cake type free-field blast pressure "pencil" sensor | |
| CN202256819U (en) | Sensing cable for simultaneously distributed monitoring of temperature and pressure in oil-well oil tube | |
| CN101694409A (en) | Method for manufacturing all-silica pressure chips of SOI oil pressure sensor | |
| CN204679199U (en) | Split type sputtered thin film pressure transducer | |
| CN201476928U (en) | High-precision and high-frequency piezoelectric type pressure sensor | |
| CN207197705U (en) | Temperature-compensating graphene pressure sensor in a kind of piece | |
| CN201141790Y (en) | High-temperature high-frequency response double-membrane oil-filled pressure transducer | |
| CN207263225U (en) | High temperature wide range pressure sensor with temperature measurement function | |
| CN102778309A (en) | Piezoelectric pressure sensor with spherical induction head | |
| Ajovalasit | The measurement of large strains using electrical resistance strain gages |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130403 Effective date of abandoning: 20141015 |
|
| RGAV | Abandon patent right to avoid regrant |