CN203657738U - High voltage-resisting differential transformer-type angle sensor - Google Patents
High voltage-resisting differential transformer-type angle sensor Download PDFInfo
- Publication number
- CN203657738U CN203657738U CN201320865237.7U CN201320865237U CN203657738U CN 203657738 U CN203657738 U CN 203657738U CN 201320865237 U CN201320865237 U CN 201320865237U CN 203657738 U CN203657738 U CN 203657738U
- Authority
- CN
- China
- Prior art keywords
- skeleton
- coil groove
- ring body
- rotor
- secondary coil
- 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
Links
Images
Landscapes
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
The utility model discloses a high voltage-resisting differential transformer-type angle sensor. The angle sensor comprises a bushing and a rotor; the bushing is internally provided with a sealing cavity; the rotor is detachably inserted in the cavity; the rotor can rotate inside the cavity; the outer surface of the bushing is provided with a plurality of skeletons which are not contacted mutually; gaps among the plurality of skeletons and the bushing form a first secondary coil groove, a second secondary coil groove and a primary coil groove; the primary coil groove is internally provided with a primary coil; the first secondary coil groove and the second secondary coil groove are internally provided with a first secondary coil and a second secondary coil respectively; the rotor comprises a rotary shaft, a first ring body, a second ring body and a cylinder; the first ring body and the second ring body are symmetrically fixed at two ends of the cylinder; the cylinder is fixedly connected with the rotary shaft; one end of the rotary shaft sequentially passes through the first ring body, the cylinder and the second ring body; and the other end of the rotary shaft is connected with a tested piece. The high voltage-resisting differential transformer-type angle sensor has a high voltage-resisting ability.
Description
Technical field
The utility model relates to a kind of angular transducer, is specifically related to a kind of high pressure resistant differential transformer type angle sensor.
Background technology
Traditional differential transformer type angular transducer (RVDT) adopts column type flat-wise coil to coordinate segmental rotor work, arrangement centered by primary coil, secondary coil is alternative arrangement mode, respective change is done in mutual inductance when rotor between primary coil and secondary coil, after processing by subsequent conditioning circuit, can obtain corresponding angle signal, but radial dimension is larger, uses very constant, it is because its coil bore is not sealed, so it does not have high voltage bearing characteristic.
In addition, traditional differential transformer type linear displacement transducer (LVDT) is realized high voltage performance by sleeve type structure, the signal but it cannot take measurement of an angle.
Utility model content
The technical problems to be solved in the utility model is: traditional differential transformer type angular transducer (RVDT) does not have high voltage bearing characteristic, and linear working range is narrow, range is little, and temperature stability is poor, thereby a kind of high pressure resistant differential transformer type angle sensor is provided.
For achieving the above object, the technical solution of the utility model is as follows:
A kind of high pressure resistant differential transformer type angle sensor, described angular transducer comprises a sleeve pipe and a rotor, is provided with a closed cavity in described sleeve pipe, and described rotor is dismountable to be assigned in inner chamber, and described rotor can rotate in inner chamber,
The outside surface of described sleeve pipe is provided with several mutually non-touching skeletons, gap between described several skeletons and sleeve pipe form level coil groove, second subprime coil groove and a primary coil groove for the first time, in described primary coil groove, be provided with primary coil, in described the first secondary coil groove and second subprime coil groove, be respectively equipped with the first secondary coil and second subprime coil
Described rotor comprises rotating shaft, first ring body, the second annular solid and right cylinder, described first ring body and the second annular solid symmetry are fixed on cylindrical two ends, described right cylinder is fixedly connected with rotating shaft, one end of described rotating shaft is successively through first ring body, right cylinder and the second annular solid, and the other end of described rotating shaft is connected with measured piece.
In a preferred embodiment of the present utility model, described skeleton comprises the first skeleton, the second skeleton, the 3rd skeleton and the 4th skeleton, described the first skeleton end face relative with the second skeleton is oblique ring-type, and form an oblique annular first secondary coil groove together with sleeve pipe, the opposing end surface of described the second skeleton and the 3rd skeleton in the form of a ring, and form an annular primary coil groove together with sleeve pipe, the opposing end surface of described the 3rd skeleton and the 4th skeleton is oblique ring-type, and forms an oblique annular second subprime coil groove together with sleeve pipe.
In a preferred embodiment of the present utility model, described primary coil Cao center and cylindrical center coincide, and described the first secondary coil groove and second subprime coil groove are symmetricly set on primary coil groove both sides.
In a preferred embodiment of the present utility model, the center of described the first secondary coil Cao center and first ring body coincides, and the center of described second subprime coil Cao center and the second annular solid coincides.
In a preferred embodiment of the present utility model, the end face of described first ring body is parallel with the end face of the second annular solid, and end face and the rotor center axle of described first ring body and the second annular solid are an oblique angle, and angle is 30 ° to 60 °.
In a preferred embodiment of the present utility model, end face and the rotor center axle of described the first secondary coil groove and second subprime coil groove are an oblique angle, and the described oblique angle number of degrees are identical with the number of degrees at rotor center axle formation oblique angle with the end face of described first ring body and the second annular solid.
In a preferred embodiment of the present utility model, described rotating shaft two ends are respectively equipped with support ring.
By technique scheme, the beneficial effects of the utility model are:
(1) the utility model adopts oblique ring-type secondary coil to coordinate rotor annular body running, thereby linear working range is broadened, and it is large that range becomes.
(2) the utlity model has high-voltage resistance capability.
(3) structure of the present utility model adopts and is arranged symmetrically with, and has differential structure for amplifying, and temperature stability is good.
(4) the utility model is simple in structure, easy to use, and production cost is low.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is cut-open view of the present utility model;
Fig. 2 is assembling schematic diagram of the present utility model;
Fig. 3 is rotor-position in the structural representation of-90 °;
Fig. 4 is rotor-position in the structural representation of 0 °;
Fig. 5 is rotor-position in the structural representation of 90 °;
Fig. 6 is circuit theory diagrams of the present utility model;
Fig. 7 is output characteristics schematic diagram of the present utility model.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach object and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
Referring to Fig. 1 and Fig. 2, the high pressure resistant differential transformer type angle sensor of one that the utility model provides, mainly comprises sleeve pipe 100 and rotor 200.
Be provided with several mutually discrete skeletons at the outside surface of sleeve pipe 100, skeleton is made up of nylon, can make like this temperature coefficient step-down, and thermal deformation is little.
In the utility model, be respectively equipped with the first skeleton 121, the second skeleton 122, the 3rd skeleton 123 and the 4th skeleton 124 at the outside surface of sleeve pipe 100.
The end face that the first skeleton 121 is relative with the second skeleton 122 is oblique ring-type, and the gap between the first skeleton 121 end face relative with the second skeleton 122 can form in the first secondary coil groove 130, the first secondary coil grooves 130 of an oblique ring-shaped groove shape and be provided with the first secondary coil 140 together with sleeve pipe 100;
The opposing end surface of the second skeleton 122 and the 3rd skeleton 123 in the form of a ring, and the gap between the second skeleton 122 and the opposing end surface of the 3rd skeleton 123 can form an annular primary coil groove 131 together with sleeve pipe 100, is provided with primary coil 141 in primary coil groove 131;
The opposing end surface of the 3rd skeleton 123 and the 4th skeleton 124 is oblique ring-type, and the gap between the 3rd skeleton 123 and the opposing end surface of the 4th skeleton 124 forms the second subprime coil groove 132 of an oblique ring-shaped groove shape together with sleeve pipe 100, in second subprime coil groove 132, is provided with second subprime coil 142.
In the utility model, the first secondary coil groove 130 and second subprime coil groove 132 are symmetrically distributed in the both sides of primary coil groove 131, have so differential structure for amplifying, and temperature stability is very good.
In the utility model, the first secondary coil 140, primary coil 141 and second subprime coil 142 adopt high-strength paint coated copper wire coiling to form, and make simple.
By above-mentioned enforcement, make the first secondary coil 140, primary coil 141 and second subprime coil 142 be arranged on the outside surface of the seal chamber 110 of sleeve pipe 100, isolate with the rotor 200 in seal chamber 110, thereby make the utlity model has high voltage performance.
In addition, because the first secondary coil groove 130 and second subprime coil groove 132 are all oblique ring-shaped groove shape, when the rotor 200 in fitted seal cavity 110 is worked like this, can obtain wider working range and larger work range.
In the utility model, because the first secondary coil 140, primary coil 141, second subprime coil 142, first ring body 220, the second annular solid 240 and rotor 200 are all symmetric, like this by differential amplification and the common mode inhibition of subsequent conditioning circuit, coil temperature is changed and can not cause the variation of output voltage e2, thereby realize the temperature compensation of sensor.
One end of rotating shaft 210 is successively through first ring body 220, right cylinder 230 and the second annular solid 240, and the other end is connected with measured object.
Like this, rotating shaft 210 can be assigned first ring body 220, right cylinder 230 in seal chamber 110 together with the second annular solid 240, and, because first ring body 220 is fixedly connected with right cylinder 230 with the second annular solid 240, right cylinder 230 is also fixedly connected with rotating shaft 210, described when rotating shaft 210 is during in the interior rotation of seal chamber 110, first ring body 220, right cylinder 230 and the second annular solid 240 also can rotate together with rotating shaft 210.
Can relatively rotate around the central shaft of sleeve pipe 100 and sleeve pipe 100 for the ease of rotor 200, be provided with support ring 250 at the two ends of rotating shaft 210.
In the utility model, the end face of first ring body 220 and the second annular solid 240 and rotor 200 central shafts are an oblique angle, and angle is 30 ° to 60 °;
The first secondary coil groove 130 is an oblique angle with end face and rotor 200 central shafts of second subprime coil groove 132, and the oblique angle number of degrees are identical with the number of degrees at rotor 200 central shafts formation oblique angles with the end face of first ring body 220 and the second annular solid 240.
Referring to Fig. 6, primary coil 141 can produce excitation field after passing into high-frequency ac voltage em, at this moment, also can be in excitation field with the right cylinder 230 of primary coil groove 131 in unified center in seal chamber 110, and this exciting flux is passed to respectively to first ring body 220 and the second annular solid 240;
The second annular solid 240 receives after exciting flux, just can sense flux change, and produce induced voltage es2, and form mutual inductance M2 between primary coil 141 with the second annular solid 240 in concentric second subprime coil 142;
Referring to Fig. 3 and Fig. 7, in the time that rotor 200 corners are-90 °, first ring body 220 and the first secondary coil 140 are nearest, at this moment mutual inductance M1 is in maximum, and the second annular solid 240 from second subprime coil 132 farthest, at this moment mutual inductance M2 is in minimum, at this moment induced voltage e2 is an extreme value, along with the increase gradually of corner, away from first ring body 220 becomes gradually from the first secondary coil 140, mutual inductance M1 can reduce gradually, and close to the second annular solid 240 becomes gradually from second subprime coil 132, mutual inductance M2 can increase gradually;
Referring to Fig. 4 and Fig. 7, in the time that the corner of rotor is 0 °, at this moment, first ring body 220 equals the distance of the second annular solid 240 from second subprime coil 132 from the distance of the first secondary coil 140, at this moment mutual inductance M1 equals mutual inductance M2, and induced voltage e2 is output as 0, when corner continues to increase, mutual inductance M1 can continue to reduce, and mutual inductance M2 can continue to increase;
Referring to Fig. 5 and Fig. 7, in the time that the corner of rotor is 90 °, first ring body 220 from the first secondary coil 140 farthest, at this moment mutual inductance M1 is in minimum, and the second annular solid 240 is nearest from second subprime coil 132, at this moment mutual inductance M2 is in maximum, and induced voltage e2 is at this moment again another extreme value.
Referring to Fig. 7, by above-mentioned enforcement, make the corner of induced voltage e2 and rotor 200 be a linear relationship, thereby can draw the proportional voltage signal of corner of sensor output and rotor 200.
By above-mentioned enforcement, make the utility model both there is high pressure ability, signal can take measurement of an angle again.
More than show and described ultimate principle of the present utility model and principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and instructions, describes just illustrates principle of the present utility model; do not departing under the prerequisite of the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (7)
1. a high pressure resistant differential transformer type angle sensor, described angular transducer comprises a sleeve pipe and a rotor, it is characterized in that, is provided with a closed cavity in described sleeve pipe, and described rotor is dismountable to be assigned in inner chamber, and described rotor can rotate in inner chamber,
The outside surface of described sleeve pipe is provided with several mutually non-touching skeletons, gap between described several skeletons and sleeve pipe form level coil groove, second subprime coil groove and a primary coil groove for the first time, in described primary coil groove, be provided with primary coil, in described the first secondary coil groove and second subprime coil groove, be respectively equipped with the first secondary coil and second subprime coil
Described rotor comprises rotating shaft, first ring body, the second annular solid and right cylinder, described first ring body and the second annular solid symmetry are fixed on cylindrical two ends, described right cylinder is fixedly connected with rotating shaft, one end of described rotating shaft is successively through first ring body, right cylinder and the second annular solid, and the other end of described rotating shaft is connected with measured piece.
2. the high pressure resistant differential transformer type angle sensor of one according to claim 1, it is characterized in that, described skeleton comprises the first skeleton, the second skeleton, the 3rd skeleton and the 4th skeleton, described the first skeleton end face relative with the second skeleton is oblique ring-type, and form an oblique annular first secondary coil groove together with sleeve pipe, the opposing end surface of described the second skeleton and the 3rd skeleton in the form of a ring, and form an annular primary coil groove together with sleeve pipe, the opposing end surface of described the 3rd skeleton and the 4th skeleton is oblique ring-type, and form an oblique annular second subprime coil groove together with sleeve pipe.
3. the high pressure resistant differential transformer type angle sensor of one according to claim 1, it is characterized in that, described primary coil Cao center and cylindrical center coincide, and described the first secondary coil groove and second subprime coil groove are symmetricly set on primary coil groove both sides.
4. the high pressure resistant differential transformer type angle sensor of one according to claim 1, it is characterized in that, the center of described the first secondary coil Cao center and first ring body coincides, and the center of described second subprime coil Cao center and the second annular solid coincides.
5. the high pressure resistant differential transformer type angle sensor of one according to claim 1, it is characterized in that, the end face of described first ring body is parallel with the end face of the second annular solid, and end face and the rotor center axle of described first ring body and the second annular solid are an oblique angle, and angle is 30 ° to 60 °.
6. the high pressure resistant differential transformer type angle sensor of one according to claim 5, it is characterized in that, end face and the rotor center axle of described the first secondary coil groove and second subprime coil groove are an oblique angle, and the described oblique angle number of degrees are identical with the number of degrees at rotor center axle formation oblique angle with the end face of described first ring body and the second annular solid.
7. the high pressure resistant differential transformer type angle sensor of one according to claim 1, is characterized in that, described rotating shaft two ends are respectively equipped with support ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320865237.7U CN203657738U (en) | 2013-12-25 | 2013-12-25 | High voltage-resisting differential transformer-type angle sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320865237.7U CN203657738U (en) | 2013-12-25 | 2013-12-25 | High voltage-resisting differential transformer-type angle sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203657738U true CN203657738U (en) | 2014-06-18 |
Family
ID=50924116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320865237.7U Expired - Fee Related CN203657738U (en) | 2013-12-25 | 2013-12-25 | High voltage-resisting differential transformer-type angle sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203657738U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104697425A (en) * | 2015-03-20 | 2015-06-10 | 沈阳理岩控制技术有限公司 | Method and device for detecting position information of rotor and sensor |
-
2013
- 2013-12-25 CN CN201320865237.7U patent/CN203657738U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104697425A (en) * | 2015-03-20 | 2015-06-10 | 沈阳理岩控制技术有限公司 | Method and device for detecting position information of rotor and sensor |
| CN104697425B (en) * | 2015-03-20 | 2017-07-28 | 沈阳理岩控制技术有限公司 | A kind of method, device and sensor for detecting rotor position information |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103615573A (en) | Pre-tensioning - pre-twisting full-bridge 2D electro-hydraulic proportional directional valve | |
| CN203009429U (en) | Double-vane rotary-valve-type electro-hydraulic servo valve | |
| CN104748661B (en) | Differential transformer displacement transducer | |
| CN103615572A (en) | Pre-tensioning - pre-twisting type simplified full-bridge 2D electro-hydraulic proportional directional valve | |
| CN103675342B (en) | Novel range-adjustable magnetic liquid acceleration sensor | |
| CN203657738U (en) | High voltage-resisting differential transformer-type angle sensor | |
| CN102979777A (en) | Rotary valve type large torque hydraulic corner self-servo valve | |
| CN208075953U (en) | Duplex two dimension piston-type flow-meter | |
| CN104748667A (en) | High voltage-resisting differential transformer-type angle sensor | |
| CN207333720U (en) | Strip permanent magnet arranged radially magnetic fluid seal device | |
| CN106352771B (en) | A kind of oval inner diameter measuring device | |
| CN103115036A (en) | Double-vane hydraulic self-servo oscillating cylinder | |
| CN104006916B (en) | A kind of mutual inductance type magnetic-liquid micro differential pressure sensor | |
| CN207906350U (en) | A kind of coil external MR damper with parallel liquid flowing channel structure | |
| CN201953372U (en) | Pressure-bearing type resistivity sensor | |
| CN203201491U (en) | Metal air-tight seal rotary bead type drill rod joint | |
| CN204944381U (en) | A kind of can the measurement mechanism of Quick Measurement trisection impeller of rotor external diameter | |
| CN208074011U (en) | Gas-static main shaft throttle orifice aperture adjusting device | |
| CN203627917U (en) | Pretensioning-pretwisting type full bridge 2D electric-hydraulic proportional reversing valve | |
| CN205981091U (en) | Miniaturized differential transformer angle sensor | |
| CN205120024U (en) | Iron gallium alloy displacement sensor | |
| CN206945186U (en) | A kind of New Magnetic Field Controlled torsion-testing frock | |
| CN104198109B (en) | A kind of magnetic-liquid micro differential pressure sensor of band arm | |
| CN204240884U (en) | A kind of measurer for prototype gear force-output shaft hip cross size | |
| CN107420376A (en) | A kind of built-in pilot valve core vibration displacement signal on-line measuring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140618 Termination date: 20201225 |