CN2200172Y - Linear displacement sensor - Google Patents
Linear displacement sensor Download PDFInfo
- Publication number
- CN2200172Y CN2200172Y CN 94205553 CN94205553U CN2200172Y CN 2200172 Y CN2200172 Y CN 2200172Y CN 94205553 CN94205553 CN 94205553 CN 94205553 U CN94205553 U CN 94205553U CN 2200172 Y CN2200172 Y CN 2200172Y
- Authority
- CN
- China
- Prior art keywords
- stator
- coil
- linear displacement
- stator body
- displacement transducer
- 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.)
- Expired - Fee Related
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- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
The utility model relates to a sensor, particularly an inductance linear displacement sensor composed of a movable iron sheathed on a stator. Relative to the stator, the movable iron can move at the external side along the axial direction of the stator. Signal lines are led out from the stator composed of a stator body, a coil and a coil jacket. The utility model realizes the conversion from linear displacement to non-contact measurement and zero wear of the inductance. Having the advantages of long service life and high measuring precision, the utility model is especially suitable for energy measurement for screw compressors.
Description
The utility model relates to a kind of sensor, particularly a kind of inductance type linear displacement transducer.
Present existing linear displacement transducer is varied.The linear displacement transducer that contact type measurement is arranged, this sensor is drawn signal wire simultaneously from stator (electric brush type resistive element), mover (electric brush type resistive element), and wearing and tearing is arranged, and influences serviceable life and measuring accuracy; The linear displacement transducer that a kind of heed contacted measure is arranged, moving iron moves in stator interior.Drive coil is under the AC signal excitation, and the displacement of moving iron is converted into the induced voltage of output winding, but because moving iron can only move, can not be fit to the usefulness of special occasions in stator interior, for example: to the measurement of screw compressor piston position.
The purpose of this utility model is in order to provide a kind of wearing and tearing of not having, life-span is long, the linear displacement transducer of measuring accuracy height, broad-spectrum, the moving noncontacting measurement straight-line displacement that iron is enclosed within on the stator, stator is drawn signal wire, straight-line displacement is converted to inductance value.
The purpose of this utility model realizes by following technical scheme.Get stator, moving iron ready, stator is made up of stator body, coil, coil jackets, and stator body is a straight-tube shape, coiling vertically on stator body, and coil jackets wraps in inside with coil; Moving iron is straight-tube shape, be enclosed within on the stator, can be outside mobile with respect to stator at stator along stator shaft orientation, draw signal wire on the stator, but the noncontacting measurement straight-line displacement promptly constitutes the linear displacement transducer that straight-line displacement is converted to the noncontacting measurement straight-line displacement of inductance value.
The xsect of moving iron can have any shape, can perforate, and tapping also can be made flange-like with its arbitrary end, so that install; Moving iron can all be made by permeability magnetic material; Perhaps can form, but wherein have at least a part to make by permeability magnetic material by a plurality of parts;
The stator body xsect can be arbitrary shape, can perforate on the stator body, and tapping also can be made flange-like with the one end, so that install; Stator body can all be made by permeability magnetic material; Perhaps can form, but wherein have at least a part to make by permeability magnetic material by a plurality of parts;
Coil can be with enameled wire or directly coiling vertically on stator body of insulated line, available insulating material reinforced insulation between stator body and the coil; Perhaps coil can be wound on the skeleton in advance, reinstalls stator body; Coil jackets wraps in inside with coil, plays the protection coil;
The thermal sensing element of on stator body, can packing into, as thermistor, integrated temperature sensor etc., thermal sensing element can provide signal to this device as the inductance value temperature compensation; On stator body, increase one or more ancillary coils; Ancillary coil is in order to compensate the non-linear of this device output characteristics.
The moving iron of the utility model is enclosed within on the stator, stator is drawn signal wire, realized that straight-line displacement is converted to the noncontacting measurement of inductance value; The utility model does not have wearing and tearing, thereby long service life, the measuring accuracy height.
Below in conjunction with drawings and Examples the utility model is described in further detail:
Fig. 1 is the utility model structural representation
Fig. 2 is another example structure synoptic diagram of the utility model
See figures.1.and.2, get stator, moving iron ［ 3 ］ ready, stator is made up of stator body ［ 2 ］, coil ［ 4 ］ coil jackets ［ 5 ］, and stator body ［ 2 ］ is a straight-tube shape, and coiling ［ 4 ］, coil jackets ［ 5 ］ wrap in inside with coil ［ 4 ］ vertically on stator body ［ 2 ］; Moving iron ［ 3 ］ is straight-tube shape, be enclosed within on the stator, can be outside mobile with respect to stator at stator along stator shaft orientation, draw signal wire ［ 1 ］ on the stator, but the noncontacting measurement straight-line displacement promptly constitutes the linear displacement transducer that straight-line displacement is converted to the noncontacting measurement straight-line displacement of inductance value.
Moving iron ［ 3 ］ can have any shape, can perforate, tapping, also flange-like can be made in its arbitrary end, so that install; Moving iron ［ 3 ］ can all be made by permeability magnetic material, perhaps is made up of a plurality of parts in addition, but wherein has at least a part to be made by permeability magnetic material;
Stator body ［ 2 ］ xsect can be arbitrary shape, can perforate on the stator body ［ 2 ］, and tapping also can be made flange-like with the one end, so that install; Stator body ［ 2 ］ can all be made by permeability magnetic material; Perhaps form, but wherein have at least a part to make by permeability magnetic material by a plurality of parts;
The directly coiling vertically on stator body of available enameled wire of coil ［ 4 ］ or insulated line can the insulating material reinforced insulation between stator body ［ 2 ］ and the coil ［ 4 ］; Perhaps coil ［ 4 ］ can be wound on the skeleton in advance, reinstalls stator body ［ 2 ］; Coil jackets ［ 5 ］ wraps in inside with coil ［ 2 ］, plays protection coil ［ 2 ］.
With reference to Fig. 2, the thermal sensing element ［ 6 ］ of on stator body, can packing into, as thermistor, integrated temperature sensor etc., thermal sensing element ［ 6 ］ can provide signal as the inductance value temperature compensation, go up the one or more ancillary coils of increase ［ 8 ］ in order to compensate the non-linear of this device output characteristics at stator body ［ 2 ］, ［ 7 ］ are convenient mounting hole of installing.
The utility model is widely used, and is specially adapted to the measurement mechanism of screw compressor piston position.
Claims (5)
1, a kind of linear displacement transducer, comprise stator, moving iron [3], the stator that it is characterized in that described linear displacement transducer is made up of stator body [2], coil [4], coil jackets [5], stator body [2] is a straight-tube shape, and coiling [4], coil jackets [5] wrap in inside with coil [4] vertically on stator body [2]; Moving iron [3] is straight-tube shape, is enclosed within on the stator, can be outside mobile with respect to stator at stator along stator shaft orientation, draw signal wire [1] on the stator, but the noncontacting measurement straight-line displacement.
2, linear displacement transducer as claimed in claim 1, it is characterized in that the directly coiling vertically on stator body ［ 2 ］ of available enameled wire of described coil ［ 4 ］ or insulated line, available insulating material reinforced insulation between stator body ［ 2 ］ and the coil ［ 4 ］.
3, linear displacement transducer as claimed in claim 1 is characterized in that described coil ［ 4 ］ can be wound on the skeleton in advance, reinstalls stator body ［ 2 ］.
4, linear displacement transducer as claimed in claim 1 is characterized in that at described stator body ［ 2 ］ thermal sensing element ［ 6 ］ of packing into.
5, linear displacement transducer as claimed in claim 1 is characterized in that going up increase ancillary coil ［ 8 ］ at described stator body ［ 2 ］.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94205553 CN2200172Y (en) | 1994-03-28 | 1994-03-28 | Linear displacement sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94205553 CN2200172Y (en) | 1994-03-28 | 1994-03-28 | Linear displacement sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2200172Y true CN2200172Y (en) | 1995-06-07 |
Family
ID=33824435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94205553 Expired - Fee Related CN2200172Y (en) | 1994-03-28 | 1994-03-28 | Linear displacement sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2200172Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101161883B (en) * | 2006-10-11 | 2011-05-18 | 特鲁菲舍尔股份有限公司及两合公司 | Apparatus on a drafting system of a spinning room machine |
| CN106286361A (en) * | 2015-06-26 | 2017-01-04 | Lg电子株式会社 | Compressor and include the refrigeration system of this compressor |
-
1994
- 1994-03-28 CN CN 94205553 patent/CN2200172Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101161883B (en) * | 2006-10-11 | 2011-05-18 | 特鲁菲舍尔股份有限公司及两合公司 | Apparatus on a drafting system of a spinning room machine |
| CN106286361A (en) * | 2015-06-26 | 2017-01-04 | Lg电子株式会社 | Compressor and include the refrigeration system of this compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |