CN105115653A - Pressure transducer - Google Patents
Pressure transducer Download PDFInfo
- Publication number
- CN105115653A CN105115653A CN201510613065.8A CN201510613065A CN105115653A CN 105115653 A CN105115653 A CN 105115653A CN 201510613065 A CN201510613065 A CN 201510613065A CN 105115653 A CN105115653 A CN 105115653A
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- China
- Prior art keywords
- housing
- magnetic core
- pressure
- pressure transducer
- coil
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- 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.)
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- Measuring Fluid Pressure (AREA)
Abstract
The present invention discloses a pressure transducer including a housing, a magnetic core and a coil. The bottom of the housing is provided with an opening, the coil sleeves the housing, the magnetic core is arranged in the housing, a sealing member is arranged on the bottom of the magnetic core, and the sealing member slidingly fits with an inner wall of the housing. The pressure transducer has a plurality of functions, and the pressure transducer is simple in structure and has a slight pressure output error.
Description
Technical field
The present invention 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.
Summary of the invention
The object of this invention 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 invention, 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.
Beneficial effect of the present invention is: 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 embodiment of the present invention 1;
Fig. 2 is the structural representation of the pressure transducer of the embodiment of the present invention 2;
Fig. 3 is the structural representation of the pressure transducer of the embodiment of the present invention 3.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further detailed explanation.
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 some embodiments of the present invention.For the person of ordinary skill of the art, without departing from the concept of the premise of the invention, can also make some distortion and improvement, these all belong to protection scope of the present invention.
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 |
|---|---|---|---|
| CN201510613065.8A CN105115653A (en) | 2015-09-23 | 2015-09-23 | Pressure transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510613065.8A CN105115653A (en) | 2015-09-23 | 2015-09-23 | Pressure transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105115653A true CN105115653A (en) | 2015-12-02 |
Family
ID=54663694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510613065.8A Pending CN105115653A (en) | 2015-09-23 | 2015-09-23 | Pressure transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105115653A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108492529A (en) * | 2018-02-07 | 2018-09-04 | 中国地质大学（武汉） | A kind of landslide monitoring early-warning system |
| CN110388869A (en) * | 2019-08-23 | 2019-10-29 | 任干支 | A kind of bionics skin sensor, coil array, positioning mode and tactile collector |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4717873A (en) * | 1985-11-12 | 1988-01-05 | Westinghouse Electric Corp. | Magnetic displacement transducer system having a magnet that is movable in a tube whose interior is exposed to a fluid and having at least one magnetometer outside the tube |
| CN201867662U (en) * | 2010-10-28 | 2011-06-15 | 乔林友 | Pressure sensor for electric pressure cooker |
| CN103674401A (en) * | 2012-09-03 | 2014-03-26 | 东明机电（深圳）有限公司 | Water pump pressure detection device and water pump pressure sensor |
| CN204964094U (en) * | 2015-09-23 | 2016-01-13 | 黄明书 | Pressure sensor |
-
2015
- 2015-09-23 CN CN201510613065.8A patent/CN105115653A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4717873A (en) * | 1985-11-12 | 1988-01-05 | Westinghouse Electric Corp. | Magnetic displacement transducer system having a magnet that is movable in a tube whose interior is exposed to a fluid and having at least one magnetometer outside the tube |
| CN201867662U (en) * | 2010-10-28 | 2011-06-15 | 乔林友 | Pressure sensor for electric pressure cooker |
| CN103674401A (en) * | 2012-09-03 | 2014-03-26 | 东明机电（深圳）有限公司 | Water pump pressure detection device and water pump pressure sensor |
| CN204964094U (en) * | 2015-09-23 | 2016-01-13 | 黄明书 | Pressure sensor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108492529A (en) * | 2018-02-07 | 2018-09-04 | 中国地质大学（武汉） | A kind of landslide monitoring early-warning system |
| CN110388869A (en) * | 2019-08-23 | 2019-10-29 | 任干支 | A kind of bionics skin sensor, coil array, positioning mode and tactile collector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151202 |
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| WD01 | Invention patent application deemed withdrawn after publication |