CN204964094U - Pressure sensor - Google Patents
Pressure sensor Download PDFInfo
- Publication number
- CN204964094U CN204964094U CN201520743396.9U CN201520743396U CN204964094U CN 204964094 U CN204964094 U CN 204964094U CN 201520743396 U CN201520743396 U CN 201520743396U CN 204964094 U CN204964094 U CN 204964094U
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- CN
- China
- Prior art keywords
- magnetic core
- housing
- pressure
- pressure transducer
- 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
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- Measuring Fluid Pressure (AREA)
Abstract
The utility model discloses a pressure sensor, including casing, magnetic core and coil, the casing bottom is equipped with the opening, and the casing is located to the coil cover, and the magnetic core is located the casing, and the magnetic core bottom is equipped with sealing member, sealing member and shells inner wall sliding fit. This pressure sensor has multiple functions, and its simple structure, pressure output error are little.
Description
Technical field
The utility model relates to fields of measurement, particularly a kind of pressure transducer.
Background technology
Pressure transducer is used for medium pressure in inspection instrument, is widely used in industry.At present, the pressure detecting element of pressure transducer generally adopts the deformation indicated pressure of flexible member, and its deformation quantity is small, although have natural sensitivity, output error is larger.
Utility model content
The purpose of this utility model is to provide that a kind of output error is little, the simple pressure transducer of structure.
For achieving the above object, according to an aspect of the present utility model, a kind of pressure transducer is provided, comprise housing, magnetic core and coil, housing bottom is provided with opening, and coil is sheathed on housing, magnetic core is positioned at housing, is provided with seal bottom magnetic core, and seal and inner walls are slidably matched.Thus, when the pressure of measured medium changes, O-ring seal is moved in housing, and drives magnetic core to move up and down, and the output signal of coil is changed, and by the process to coil output signal, realizes the electrodeless output of pressure data.This pressure sensor structure is simple, output error is little.
In some embodiments, pressure transducer also comprises the spring being positioned at housing, and the bottom of spring is connected with seal, and the top of spring is connected with housing upper.Thus, when pressure increase, spring can prevent magnetic core from tilting, and ensures the consistance of coil output signal, and spring promotion magnetic core automatically resets when the pressure drops.
In some embodiments, the sidewall of housing is provided with pressure limiting mouth.Thus, in pressure survey, rise when measured medium promotes magnetic core, when pressure limiting mouth and opening in communication, measured medium can be discharged from pressure limiting mouth, makes measured medium remain on certain pressure, and therefore, this pressure sensing appliance has pressure limiting effect.When passing into larger current in coil, magnetic core rises certain distance under the influence of a magnetic field, pressure limiting mouth and opening together with, measured medium remains on normal pressure, and therefore this pressure transducer also has the effect of switch.
In some embodiments, the top of housing is provided with power switch, and the position of power switch is corresponding with magnetic core.Thus, when the larger distance of magnetic core rising, when magnetic core top and power switch offset, power switch power-off can be touched, play power-off protection effect.
The beneficial effects of the utility model are: this pressure transducer in use, be moved in housing in measured medium effect lower seal, and drive magnetic core, the output signal of coil is changed, by the process to coil output signal, realize the electrodeless output of pressure data.The setting of pressure limiting mouth makes this pressure sensing appliance have pressure limiting effect.When passing into larger current in coil, magnetic core rises certain distance under the influence of a magnetic field, pressure limiting mouth and opening together with, measured medium remains on normal pressure, and therefore this pressure transducer also has the effect of switch.When magnetic core is driven to when offseting with power switch, power switch power-off can be touched, play power-off protection effect.To sum up, this pressure transducer has several functions, and its structure is simple, Output pressure error is little.
Accompanying drawing explanation
Fig. 1 is the structural representation of the pressure transducer of the utility model embodiment 1;
Fig. 2 is the structural representation of the pressure transducer of the utility model embodiment 2;
Fig. 3 is the structural representation of the pressure transducer of the utility model embodiment 3.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Embodiment 1
As shown in Figure 1, the pressure transducer of the present embodiment, comprises housing 1, magnetic core 2 and coil 3, is provided with opening 11 bottom housing 1.Coil 3 is sheathed on housing 1.Magnetic core 2 is positioned at housing 1.Be provided with seal 4 bottom magnetic core 2, seal 4 is fixedly connected with magnetic core 2.Seal 4 and housing 1 inwall are slidably matched.
The pressure transducer of the present embodiment also comprises the spring 5 being positioned at housing 1.The bottom of spring 5 is fixedly connected with seal 4, and the top of spring 5 is fixedly connected with housing 1 top.Spring 5 is set in outside magnetic core 2.
In use, measured medium is acted on O-ring seal 4 by opening 11 pressure transducer of the present embodiment.Be moved in housing 1 in measured medium effect lower seal 4, and drive magnetic core 2, the output signal of coil 3 is changed, by the process outputed signal coil 3, realize the electrodeless output of pressure data.
Embodiment 2
As shown in Figure 2, as different from Example 1, housing 1 sidewall of the pressure transducer of the present embodiment is provided with pressure limiting mouth 12.
In pressure survey, rise when measured medium promotes magnetic core 2, when being connected to pressure limiting mouth 12 with opening 11, measured medium can be discharged from pressure limiting mouth 12, makes measured medium remain on certain pressure.
When passing into larger current in coil 3, magnetic core 2 rises certain distance under the influence of a magnetic field, pressure limiting mouth 12 and opening 11 together with, measured medium remains on normal pressure, and therefore the pressure transducer of the present embodiment also has the effect of switch.
Embodiment 3
As shown in Figure 3, as different from Example 2, housing 1 top of the pressure transducer of the present embodiment is provided with power switch 6, and the position of power switch 6 is corresponding with magnetic core 2.
When magnetic core 2 rises larger distance, when magnetic core 2 top and power switch 6 offset, power switch 6 power-off can be touched, play power-off protection effect.
Above-described is only embodiments more of the present utility model.For the person of ordinary skill of the art, under the prerequisite not departing from the utility model creation design, can also make some distortion and improvement, these all belong to protection domain of the present utility model.
Claims (4)
1. pressure transducer, it is characterized in that, comprise housing (1), magnetic core (2) and coil (3), described housing (1) bottom is provided with opening (11), described coil (3) is sheathed on housing (1), described magnetic core (2) is positioned at housing (1), described magnetic core (2) bottom is provided with seal (4), and described seal (4) and housing (1) inwall are slidably matched.
2. pressure transducer according to claim 1, it is characterized in that, also comprise the spring (5) being positioned at housing (1), the bottom of described spring (5) is connected with seal (4), and the top of described spring (5) is connected with housing (1) top.
3. pressure transducer according to claim 1 and 2, is characterized in that, the sidewall of described housing (1) is provided with pressure limiting mouth (12).
4. pressure transducer according to claim 1 and 2, is characterized in that, the top of described housing (1) is provided with power switch (6), and the position of described power switch (6) is corresponding with magnetic core (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520743396.9U CN204964094U (en) | 2015-09-23 | 2015-09-23 | Pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520743396.9U CN204964094U (en) | 2015-09-23 | 2015-09-23 | Pressure sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204964094U true CN204964094U (en) | 2016-01-13 |
Family
ID=55059150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520743396.9U Expired - Fee Related CN204964094U (en) | 2015-09-23 | 2015-09-23 | Pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204964094U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105115653A (en) * | 2015-09-23 | 2015-12-02 | 黄明书 | Pressure transducer |
-
2015
- 2015-09-23 CN CN201520743396.9U patent/CN204964094U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105115653A (en) * | 2015-09-23 | 2015-12-02 | 黄明书 | Pressure transducer |
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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 |
Granted publication date: 20160113 Termination date: 20180923 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |