CN204421829U - Plane formula High Pressure Eddy Current Displacement Sensor - Google Patents
Plane formula High Pressure Eddy Current Displacement Sensor Download PDFInfo
- Publication number
- CN204421829U CN204421829U CN201520154469.0U CN201520154469U CN204421829U CN 204421829 U CN204421829 U CN 204421829U CN 201520154469 U CN201520154469 U CN 201520154469U CN 204421829 U CN204421829 U CN 204421829U
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- CN
- China
- Prior art keywords
- high pressure
- displacement sensor
- eddy current
- metal shell
- current displacement
- 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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Abstract
The utility model discloses a kind of plane formula High Pressure Eddy Current Displacement Sensor, form the end cap (4) comprising metal shell (2) and complexed metal housing (2) and arrange, in metal shell (2), middle part is provided with iron core (1), iron core (1) is provided with inductive coil (3), described metal shell (2) top is provided with induction metal (5), and metal shell (2) outer wall is provided with screw thread.The utility model has the feature of high pressure resistant, anti-interference strong, compact conformation.
Description
Technical field
The utility model relates to non-electrical quantity measurement technology field, particularly a kind of plane formula High Pressure Eddy Current Displacement Sensor.
Background technology
Traditional eddy current displacement sensor adopts inductive coil as probe, passes into high-frequency ac current and produce alternating magnetic field in coil, measures object and under high frequency magnetic field effect, produces ring-type induction current, i.e. current vortex; Current vortex can resist magnetic fields, and the power of eddy effect changes along with the change of the relative position measured between object and high frequency probe; Thus cause the change of inductive coil parameter, and obtain corresponding displacement signal by subsequent process circuit.It has highly sensitive, non-cpntact measurement, frequency response advantages of higher; But its deficiency is that its not high pressure resistant and by ambient temperature impact is larger, is therefore rarely used in hydraulic pressure occasion.
Utility model content
The purpose of this utility model is, provides a kind of plane formula High Pressure Eddy Current Displacement Sensor.The utility model has the feature of high pressure resistant, anti-interference strong, compact conformation.
The technical solution of the utility model: plane formula High Pressure Eddy Current Displacement Sensor, it is characterized in that: the end cap comprising metal shell and the setting of complexed metal housing, in metal shell, middle part is provided with iron core, iron core is provided with inductive coil, be provided with induction metal above described metal shell, metal shell outer wall is provided with screw thread.
In aforesaid plane formula High Pressure Eddy Current Displacement Sensor, described metal shell comprises the round-meshed housing end face of center tool and housing side, be provided with cylinder in circular hole, described cylinder and housing side are made up of soft magnetic material, and described housing end face is made up of high pressure resistant non-magnet material.
In aforesaid plane formula High Pressure Eddy Current Displacement Sensor, described cylinder and housing side are made up of the iron of magnetic conduction.
In aforesaid plane formula High Pressure Eddy Current Displacement Sensor, described housing end face is made up of high pressure resistant stainless steel.
In aforesaid plane formula High Pressure Eddy Current Displacement Sensor, described inductive coil is for putting down around formula inductive coil.
Compared with prior art, the utility model has the following advantages:
1, adopt metal shell to bear high pressure, realize the high pressure resistant function of eddy current displacement sensor;
2, coil adopts flat around formula, and resistance is little, and temperature drift is little;
3, structure is simple, and antijamming capability is strong, and cost is low;
4, volume is little, is easy to use.
Therefore the utility model can be applicable to Cylindrical Gear Meter middle gear radial displacement measurement in hyperbaric environment.
In addition, cylinder and housing side are that the iron of magnetic conduction is made, and magnetic flux can be derived in housing; Shell ends face portion adopts high pressure resistant metal material stainless steel to make, can effective isolated high-voltage environment, the peripheral components such as protection coil; Outside is cut screw thread, can be directly installed in equipment near measured body or device with screw thread, fast easy for installation.The utility model has the feature of high pressure resistant, anti-interference strong, compact conformation.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Being labeled as in accompanying drawing: 1-iron core, 2-metal shell, 3-inductive coil, 4-end cap, 5-responds to metal, 6-housing side, 7-housing end face, 8-cylinder.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described, but not as the foundation limited the utility model.
Embodiment.Plane formula High Pressure Eddy Current Displacement Sensor, form as shown in Figure 1, comprise the end cap 4 of metal shell 2 and complexed metal housing 2 setting, in metal shell 2, middle part is provided with iron core 1, iron core 1 is provided with inductive coil 3, be provided with induction metal 5 above described metal shell 2, metal shell 2 outer wall is provided with screw thread.
Be preferably, described metal shell 2 comprises the round-meshed housing end face 7 of center tool and housing side 6, is provided with cylinder 8 in circular hole, and described cylinder 8 and housing side 6 are made up of soft magnetic material, and described housing end face 7 is made up of high pressure resistant non-magnet material.
Be more preferably, described cylinder 8 and housing side 6 are made up of the iron of magnetic conduction.Described housing end face 7 is made up of high pressure resistant stainless steel.
Be more preferably, described inductive coil 3 is for putting down around formula inductive coil.
The openend of described metal shell 2 is provided with step, arranges end cap 4 in step, and end cap 4 is provided with through wires hole.
Described iron core is corresponding with cylinder to be arranged
Use principle of the present utility model: inductive coil passes into high frequency alternating current, excites induced field.By the magnetic conduction effect of permeability magnetic material, outside housing, there is induced field.When measured conductor is near sensor, the conductor top layer within the scope of magnetic fields, just creates current vortex.Therefore the distance of measured conductor and sensor can be obtained by the impedance detecting inductive coil.
Form full-bridge circuit in inductive coil place in circuit, full-bridge circuit is by alternating current source forcing, and centre tap output voltage signal, therefore the impedance variation of inductive coil can be converted into as voltage signal exports by full bridge measurement circuit.
Claims (5)
1. plane formula High Pressure Eddy Current Displacement Sensor, it is characterized in that: comprise the end cap (4) that metal shell (2) and complexed metal housing (2) are arranged, in metal shell (2), middle part is provided with iron core (1), iron core (1) is provided with inductive coil (3), described metal shell (2) top is provided with induction metal (5), and metal shell (2) outer wall is provided with screw thread.
2. plane formula High Pressure Eddy Current Displacement Sensor according to claim 1, it is characterized in that: described metal shell (2) comprises the round-meshed housing end face (7) of center tool and housing side (6), cylinder (8) is provided with in circular hole, described cylinder (8) and housing side (6) are made up of soft magnetic material, and described housing end face (7) is made up of high pressure resistant non-magnet material.
3. plane formula High Pressure Eddy Current Displacement Sensor according to claim 2, is characterized in that: described cylinder (8) and housing side (6) are made up of the iron of magnetic conduction.
4. plane formula High Pressure Eddy Current Displacement Sensor according to claim 2, is characterized in that: described housing end face (7) is made up of high pressure resistant stainless steel.
5. the plane formula High Pressure Eddy Current Displacement Sensor according to any one of claim 1-4, is characterized in that: described inductive coil (3) is for putting down around formula inductive coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520154469.0U CN204421829U (en) | 2015-03-18 | 2015-03-18 | Plane formula High Pressure Eddy Current Displacement Sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520154469.0U CN204421829U (en) | 2015-03-18 | 2015-03-18 | Plane formula High Pressure Eddy Current Displacement Sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204421829U true CN204421829U (en) | 2015-06-24 |
Family
ID=53472188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520154469.0U Expired - Fee Related CN204421829U (en) | 2015-03-18 | 2015-03-18 | Plane formula High Pressure Eddy Current Displacement Sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204421829U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110793424A (en) * | 2019-10-30 | 2020-02-14 | 西北工业大学 | High-temperature-resistant high-precision eddy current type micro-gap measuring sensor probe and application |
-
2015
- 2015-03-18 CN CN201520154469.0U patent/CN204421829U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110793424A (en) * | 2019-10-30 | 2020-02-14 | 西北工业大学 | High-temperature-resistant high-precision eddy current type micro-gap measuring sensor probe and application |
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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: 20150624 Termination date: 20160318 |