CN205860978U - A kind of multichannel differential transformer displacement transducer - Google Patents
A kind of multichannel differential transformer displacement transducer Download PDFInfo
- Publication number
- CN205860978U CN205860978U CN201620626428.1U CN201620626428U CN205860978U CN 205860978 U CN205860978 U CN 205860978U CN 201620626428 U CN201620626428 U CN 201620626428U CN 205860978 U CN205860978 U CN 205860978U
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- pull bar
- skeleton
- differential transformer
- displacement transducer
- union joint
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Abstract
The utility model discloses a kind of multichannel differential transformer displacement transducer, it includes shell and circular union joint, described shell be respectively arranged at two ends with drive end bearing bracket and rear end cap, the inside of described shell is embedded with multiple skeleton with tubular structure；It is embedded with pull bar in described skeleton, the outside of described skeleton is arranged with coil, described pull bar runs through described drive end bearing bracket, described pull bar is positioned at described intraskeletal one end and is fixedly connected with moving iron core, described pull bar stretches out the one end outside described skeleton and is located on described circular union joint, and described pull bar is used for driving described moving iron core to move linearly in described skeleton；The outer face of described circular union joint is provided with the installation screw for connecting tested moving component.Compared with prior art, this utility model is integrated with multiple independent Measurement channel in a sensor, and it has the following technical effect that and improves certainty of measurement and Measurement reliability, and has effectively saved installing space, reduced measurement cost.
Description
Technical field
This utility model relates to sensor and manufactures field, especially a kind of multichannel differential transformer displacement transducer.
Background technology
It is high, dynamic that differential transformer displacement transducer has reliable operation, easy to maintenance, length in service life, repeatable accuracy
The advantages such as step response is good, simple in construction, volume are little, are particularly suitable for being in the severe on-the-spot motion portion such as high temperature, high humidity, greasy dirt
The displacement measurement of part.
But, the measurement stability of single differential transformer displacement transducer and reliability are still difficult to ensure that.In order to
Realizing the high accuracy to some key measurement point, high reliability displacement measurement, existing solution is, pacifies at key measurement point
Fill the differential transformer displacement transducer of multiple same size, measure the misalignment of this key measurement point simultaneously, to realize
Mutually comparison, to ensure the accuracy of measurement result.
Existing solution has following defects that to be needed to install multiple sensor, causes the raising measuring cost；Install
Multiple sensors, need to take bigger installing space；Easily produce electromagnetic interference between multiple sensors, reduce measurement essence
Degree.
Utility model content
In order to solve above-mentioned technical problem, this utility model provides a kind of multichannel differential transformer type displacement sensing
Device, its technical scheme is as follows:
A kind of multichannel differential transformer displacement transducer, it includes shell and circular union joint, the two of described shell
End is respectively equipped with drive end bearing bracket and rear end cap, is embedded with multiple skeleton with tubular structure in described shell；Wear in described skeleton
Being provided with pull bar, the outside of described skeleton is arranged with coil, and described pull bar runs through described drive end bearing bracket, and described pull bar is positioned at described skeleton
Interior one end is fixedly connected with moving iron core, and described pull bar stretches out the one end outside described skeleton and is fixedly connected on described circular connection
On head, described pull bar is used for driving described moving iron core to move linearly in described skeleton；The outer face of described circular union joint
It is provided with the installation screw for connecting tested moving component.
As further improvement of the utility model, the outer sheath of described coil is provided with the electromagnetic shielding with tubular structure
Layer.
As further improvement of the utility model, it also includes the connection with tubular structure being embedded in described shell
Moving chamber and be located in the gangbar of described linkage intracavity, described gangbar runs through described drive end bearing bracket, and described gangbar is positioned at described
One end of linkage intracavity is fixedly connected with support member, and described support member is inconsistent with the inwall in described linkage chamber, described
Lever is stretched out the one end in described linkage chamber and is fixedly connected on described circular union joint.
As further improvement of the utility model, described support member is made up of wear-resisting nonmetallic materials.
As further improvement of the utility model, described rear end cap is equipped with line outlet.
Compared with prior art, this utility model is integrated with multiple independent Measurement channel in a sensor, its tool
There is following technique effect: improve certainty of measurement and Measurement reliability, and effectively saved installing space, reduced and measure into
This.
Accompanying drawing explanation
Fig. 1 is this utility model structural representation in a specific embodiment；
Fig. 2 is the left view of Fig. 1；
Fig. 3 is operation principle schematic diagram of the present utility model.
Detailed description of the invention
For make above-mentioned purpose of the present utility model, feature and advantage, can become apparent from understandable, below in conjunction with the accompanying drawings and tool
This utility model is described in further detail by body embodiment.
As shown in Figures 1 and 2, in a specific embodiment, multichannel differential transformer type displacement of the present utility model
Sensor includes shell 1 and circular union joint 7, described shell 1 be respectively arranged at two ends with drive end bearing bracket 4 and rear end cap 5, described shell
Four skeletons 2 with tubular structure it are embedded with in 1.
Being equipped with pull bar 3 in described skeleton 2, the outside of described skeleton 2 is arranged with coil, described pull bar 3 run through described before
End cap 4, described pull bar 3 is positioned at one end of described skeleton 2 and is fixedly connected with moving iron core 6, and described pull bar 3 stretches out described skeleton
One end outside 2 is fixedly connected on described circular union joint 7, and described pull bar 3 is used for driving described moving iron core 6 at described skeleton
Rectilinear movement in 2, thus change the Distribution of Magnetic Field of described coil, final generation displacement measurement signal.
The outer face of described circular union joint 7 is provided with the installation screw 11 for connecting tested moving component.By institute
State installation screw 11 and can realize the connection of tested moving component and described circular union joint 7.
In the case of the described coil electricity of sensor, when tested moving component is subjected to displacement, it is connected to described circle
Four described pull bars 3 on shape union joint 7 produce synchronizing moving, and drive corresponding four described moving iron cores 3 respective
Rectilinear movement in described skeleton 2, so that the Distribution of Magnetic Field of four described coils synchronizes to change, four positions of final generation
Shift measurement signal.
In order to shield the electromagnetic interference between each described coil, the outside of the described coil on each described skeleton 2
It is arranged with the electro-magnetic screen layer 10 with tubular structure.It is described that described electro-magnetic screen layer 10 makes outside each described skeleton 2
Coil, internal described pull bar 3 and described moving iron core 6 constitute an independent Measurement channel, each described Measurement channel
A displacement measurement signal can be produced independently.
Use the multichannel differential transformer displacement transducer in the present embodiment, be equivalent at described tested moving component
On be simultaneously connected with four independent differential transformer displacement transducers, it has been obviously improved displacement measurement accuracy and reliable
Property.
Multichannel differential transformer displacement transducer in the present embodiment also includes being embedded having in described shell 1
The linkage chamber of tubular structure and be located in the gangbar 8 of described linkage intracavity, described gangbar 8 runs through described drive end bearing bracket 4, described
Gangbar 8 is positioned at one end of described linkage intracavity and is fixedly connected with the support member 9 being made up of wear-resisting nonmetallic materials, described
Support part part 9 is inconsistent with the inwall in described linkage chamber, and described gangbar 8 is stretched out the one end in described linkage chamber and is fixedly connected on described
On circular union joint 7.In the present embodiment, the material of described support member 9 is politef.
As in figure 2 it is shown, in the present embodiment, four described pull bars 3 are evenly spaced in the axis of described housing 1, described
Gangbar 8 is positioned on the axis of described housing 1, and the distance of the described pull bar of described gangbar 8 to four 3 is equal.Described gangbar 8
For main torque transmitting parts, it ensure that the synchronous coordination of four described pull bars 3 moves, and has extended described pull bar
The service life of 3.
Several line outlets 12 it are equipped with, for drawing the displacement measurement of four described Measurement channel on described rear end cap 5
Signal.
In other embodiments, the Measurement channel of other numbers according to practical measurement requirement, can be set.
With reference to Fig. 3, it illustrates operation principle of the present utility model, the most as described below:
The coil of each Measurement channel of the present utility model is made up of primary coil P, secondary coil S1 and secondary coil S2.
Primary coil P is around being located at the centre position of skeleton 2, and secondary coil S1 and secondary coil S2 is rotating around being located at the two of primary coil P
Side, secondary coil S1 and secondary coil S2 differential concatenation.
External power source is after the alternating voltage Usr of primary coil P supply certain frequency, when tested moving component is subjected to displacement
Time, under the transmission of pull bar 3, moving iron core 6 occurs respective straight to move in skeleton 2, causes the Distribution of Magnetic Field in space to occur
Change, thus change mutual induction amount M1 between primary coil P and secondary coil S1 and between primary coil P and secondary coil S2
Mutual induction amount M2, the difference in voltage ES (differential output voltage) finally causing secondary coil S1 and secondary coil S2 to export becomes
Change, specific as follows:
1, when the moving iron core 6 centre position in skeleton 2 (at primary coil P), mutual induction amount M1 and mutual induction amount M2 phase
With, electromotive force ES1 with ES2 that secondary coil S1 and secondary coil S2 produces is equal, and therefore differential output voltage ES is zero.
2, when moving iron core 6 shifts to secondary coil S1, mutual induction amount M1 increases, and mutual induction amount M2 reduces, and secondary coil S1 produces
Electromotive force ES2, differential output voltage ES that raw electromotive force ES1 produces more than secondary coil S2 are more than zero, and moving iron core 6 is shifted to
The amount of movement of secondary coil S1 is the biggest, and differential output voltage ES is the biggest.
3, when moving iron core 6 shifts to secondary coil S2, mutual induction amount M1 reduces, and mutual induction amount M2 increases, and secondary coil S1 produces
The electromotive force ES2 that raw electromotive force S1 produces less than secondary coil S2, differential output voltage is less than zero, and moving iron core 6 is shifted to secondary
The amount of movement of level coil S2 is the biggest, and the absolute value of differential output voltage ES is the biggest.
Owing to differential output voltage ES is linear with the displacement of moving iron core 6, it is possible to according to differential voltage ES
Value calculate displacement size and the direction of moving iron core 6.
Above this utility model has been carried out the most detailed description with certain particularity.Common in art
It is to be understood by the skilled artisans that what the description in embodiment was merely exemplary, without departing from true spirit of the present utility model and
Making on the premise of scope is changed all should belong to protection domain of the present utility model.This utility model is required for protection
Scope is defined by described claims rather than is limited by the foregoing description in embodiment.
Claims (5)
1. a multichannel differential transformer displacement transducer, it is characterised in that: it includes shell and circular union joint,
Described shell be respectively arranged at two ends with drive end bearing bracket and rear end cap, be embedded with multiple bone with tubular structure in described shell
Frame；
Being equipped with pull bar in described skeleton, the outside of described skeleton is arranged with coil, and described pull bar runs through described drive end bearing bracket, described
Pull bar is positioned at described intraskeletal one end and is fixedly connected with moving iron core, and it is fixing even that described pull bar stretches out the one end outside described skeleton
Being connected on described circular union joint, described pull bar is used for driving described moving iron core to move linearly in described skeleton；
The outer face of described circular union joint is provided with the installation screw for connecting tested moving component.
2. multichannel differential transformer displacement transducer as claimed in claim 1, it is characterised in that: the outside of described coil
It is arranged with the electro-magnetic screen layer with tubular structure.
3. multichannel differential transformer displacement transducer as claimed in claim 1, it is characterised in that: it also includes being embedded
The linkage chamber with tubular structure in described shell and be located in the gangbar of described linkage intracavity, described gangbar runs through institute
Stating drive end bearing bracket, described gangbar is positioned at one end of described linkage intracavity and is fixedly connected with support member, described support member and institute
The inwall stating linkage chamber is inconsistent, and described gangbar is stretched out the one end in described linkage chamber and is fixedly connected on described circular union joint
On.
4. multichannel differential transformer displacement transducer as claimed in claim 3, it is characterised in that: described support member by
Wear-resisting nonmetallic materials are made.
5. multichannel differential transformer displacement transducer as claimed in claim 1, it is characterised in that: set on described rear end cap
There is line outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620626428.1U CN205860978U (en) | 2016-06-23 | 2016-06-23 | A kind of multichannel differential transformer displacement transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620626428.1U CN205860978U (en) | 2016-06-23 | 2016-06-23 | A kind of multichannel differential transformer displacement transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205860978U true CN205860978U (en) | 2017-01-04 |
Family
ID=57636538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620626428.1U Active CN205860978U (en) | 2016-06-23 | 2016-06-23 | A kind of multichannel differential transformer displacement transducer |
Country Status (1)
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| CN (1) | CN205860978U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106839966A (en) * | 2017-03-20 | 2017-06-13 | 中国恩菲工程技术有限公司 | For the furnace expansion displacement detection system of metallurgical industrial furnace |
| CN109633232A (en) * | 2018-12-20 | 2019-04-16 | 安徽感航电子科技有限公司 | The design method of small stroke LVRT bucking coil |
| CN114659438A (en) * | 2022-05-20 | 2022-06-24 | 山东华东风机有限公司 | Detection device and detection method for differential displacement sensor |
-
2016
- 2016-06-23 CN CN201620626428.1U patent/CN205860978U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106839966A (en) * | 2017-03-20 | 2017-06-13 | 中国恩菲工程技术有限公司 | For the furnace expansion displacement detection system of metallurgical industrial furnace |
| CN109633232A (en) * | 2018-12-20 | 2019-04-16 | 安徽感航电子科技有限公司 | The design method of small stroke LVRT bucking coil |
| CN114659438A (en) * | 2022-05-20 | 2022-06-24 | 山东华东风机有限公司 | Detection device and detection method for differential displacement sensor |
| CN114659438B (en) * | 2022-05-20 | 2022-08-05 | 山东华东风机有限公司 | Detection device and detection method for differential displacement sensor |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |