CN208109324U - A kind of encapsulating structure of capacitive pressure transducer - Google Patents
A kind of encapsulating structure of capacitive pressure transducer Download PDFInfo
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- CN208109324U CN208109324U CN201820488968.7U CN201820488968U CN208109324U CN 208109324 U CN208109324 U CN 208109324U CN 201820488968 U CN201820488968 U CN 201820488968U CN 208109324 U CN208109324 U CN 208109324U
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- sensor
- shell
- filling block
- hole
- pressure transducer
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Abstract
The utility model discloses a kind of encapsulating structure of capacitive pressure transducer, including shell and the sensor being set in shell, output line is arranged in one end of sensor, output line extends to the outside of shell, pressurizing chamber is formed between shell and the other end of sensor, first through hole is arranged in the other end of shell, filling block is also set up in shell, the second through-hole is arranged in filling block, first through hole and the second through-hole are connected with pressurizing chamber, filling block is set to side of the sensor far from output line, and filling block is made of flexible material.In working sensor; liquid capacity in pressurizing chamber is limited; when liquid, which freezes, to be solidified, finite energy caused by volume expansion is not enough to damage sensor; simultaneously; filling block is made of elastic material; when liquid curing freezes, the volume of compressible filling block is that solid ice reserves expansion space, to protect the sensor from damage.
Description
Technical field
The utility model relates to detection device technical fields, more particularly to a kind of encapsulation knot of capacitive pressure transducer
Structure.
Background technique
Pressure sensor is a kind of sensor the most commonly used in industrial practice, is widely used in various industrial automatic control rings
Border, be related to water conservancy and hydropower, railway traffic, intelligent building, production automatic control, aerospace, military project, petrochemical industry, oil well, electric power, ship,
Numerous industries such as lathe, pipeline.Pressure sensor is a kind of the most widely used sensor, and traditional pressure sensor is with machine
Based on the device of tool structural type, pressure is indicated with the deformation of elastic element, but this structure size is big, quality weight, cannot provide
Electricity output.Capacitance pressure transducer, be it is a kind of using capacitance sensitive elements by tested pressure conversion at therewith at certain relationship
Electricity output pressure sensor, feature is low input power and dwarf's energy, high dynamic response, small natural effect, ring
Border adaptability is good.Capacitance pressure transducer, generally uses the electricity of circular metal film or metal-coated films as capacitor
Pole, when film is experienced pressure and deformed, the capacitance formed between film and fixed electrode changes, and passes through measuring circuit
I.e. exportable and voltage at certain relationship electric signal.
The pressure sensor housing of the prior art generallys use the mode of shape extrusion, and higher cost especially disappears in wisdom
Transducer range used in anti-, wisdom water utilities, water pump field and related smart machine concentrates within 2MPa, but practical application
In, after temperature drops to minus 20 degrees under topped up with water pressure ring border, water forms solid ice and causes sensor degradation, simultaneously because pump
The water hammer that the unlatching of valve generates also easily causes the overload damage of pressure sensor or reduces the service performance of product.
Therefore, how to solve in the prior art, pressure sensor problem easy to damage under ice-formation condition is this field skill
Art personnel are urgently to be resolved.
Utility model content
The purpose of the utility model is to provide a kind of encapsulating structures of capacitive pressure transducer, to solve the above-mentioned prior art
There are the problem of, enable the sensor to be subjected to liquid and freeze solidification and injury-free, extend the service life of sensor.
To achieve the above object, the utility model provides following scheme：The utility model provides a kind of capacitive pressure biography
The encapsulating structure of sensor, including shell and the sensor being set in the shell, output line is arranged in one end of the sensor,
The output line extends to the outside of the shell, and pressurizing chamber, institute are formed between the shell and the other end of the sensor
The other end setting first through hole of shell is stated, also sets up filling block in the shell, the second through-hole is arranged in the filling block, described
First through hole and second through-hole are connected with the pressurizing chamber, and the filling block is set to the sensor far from described
The side of output line, the filling block are made of flexible material.
Preferably, the shell includes upper cover and pedestal, and the sensor and the filling block are all set in the pedestal
Interior, the output line passes through the outside that the upper cover extends to the upper cover, and the upper cover is detachably connected with the base.
Preferably, the pedestal has installation position, and the sensor is set in the installation position, the bottom of the sensor
Portion and the installation position form the pressurizing chamber.
Preferably, sealing ring is installed between the pedestal and the sensor additional, the sealing ring is set to the installation position
It is interior.
Preferably, the first through hole, second through-hole and the installation position are coaxially disposed.
Preferably, the cross section of the filling block is hexagon, setting and the filling block formability in the pedestal
The hole location matched.
Preferably, internal screw thread is set on the inner wall of the upper cover, external screw thread, the upper cover are set on the outer wall of the pedestal
It is connected with the whorl of base.
Preferably, annular knurl is respectively provided on the outer wall of the upper cover and the pedestal.
The utility model achieves following technical effect compared with the existing technology：The capacitive pressure transducer of the utility model
Encapsulating structure, including shell and the sensor that is set in shell, output line is arranged in one end of sensor, and output line extends to
Form pressurizing chamber between the other end of the outside of shell, shell and sensor, the other end of shell is arranged first through hole, in shell
Filling block is also set up, the second through-hole is arranged in filling block, and first through hole and the second through-hole are connected with pressurizing chamber, filling block setting
In side of the sensor far from output line, filling block is made of flexible material.In working sensor, the liquid in pressurizing chamber holds
Measure it is limited, when liquid freeze solidify when volume expansion caused by finite energy be not enough to damage sensor, meanwhile, fill out
Block is filled to be made of elastic material, when liquid curing freezes, the volume of compressible filling block is that solid ice reserves expansion space, with
Protect the sensor from damage.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model
Some embodiments for those of ordinary skill in the art without any creative labor, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is the overall structure cut-away illustration of the encapsulating structure of the capacitive pressure transducer of the utility model；
Fig. 2 is the structural schematic diagram of the upper cover of the encapsulating structure of the capacitive pressure transducer of the utility model；
Fig. 3 is the pedestal of the encapsulating structure of the capacitive pressure transducer of the utility model and the structural schematic diagram of filling block；
Fig. 4 is the overall structure diagram of the filling block of the encapsulating structure of the capacitive pressure transducer of the utility model；
Fig. 5 is the cutting structural schematic diagram of the filling block of the encapsulating structure of the capacitive pressure transducer of the utility model；
Wherein, 1 is upper cover, and 2 be pedestal, and 3 be filling block, and 4 be pressurizing chamber, and 5 be sealing ring, and 6 be sensor, and 7 be output
Line.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
The purpose of the utility model is to provide a kind of encapsulating structures of capacitive pressure transducer, to solve the above-mentioned prior art
There are the problem of, enable the sensor to be subjected to liquid and freeze solidification and injury-free, extend the service life of sensor.
To keep the above objects, features, and advantages of the utility model more obvious and easy to understand, with reference to the accompanying drawing and have
Body embodiment is described in further detail the utility model.
Please refer to Fig. 1-5, wherein Fig. 1 is the overall structure of the encapsulating structure of the capacitive pressure transducer of the utility model
Cut-away illustration, Fig. 2 are the structural schematic diagram of the upper cover of the encapsulating structure of the capacitive pressure transducer of the utility model, and Fig. 3 is
The pedestal of the encapsulating structure of the capacitive pressure transducer of the utility model and the structural schematic diagram of filling block, Fig. 4 are that this is practical new
The overall structure diagram of the filling block of the encapsulating structure of the capacitive pressure transducer of type, Fig. 5 are the capacitor pressure of the utility model
The cutting structural schematic diagram of the filling block of the encapsulating structure of force snesor.
The utility model provides a kind of encapsulating structure of capacitive pressure transducer, including shell and the biography being set in shell
Output line 7 is arranged in one end of sensor 6, sensor 6, and output line 7 extends to the outside of shell, the other end of shell and sensor 6
Between form pressurizing chamber 4, first through hole is arranged in the other end of shell, and filling block 3, the setting of filling block 3 second are also set up in shell
Through-hole, first through hole and the second through-hole are connected with pressurizing chamber 4, and filling block 3 is set to one of sensor 6 far from output line 7
Side, filling block 3 are made of flexible material.
When sensor 6 works, the liquid capacity in pressurizing chamber 4 is limited, and when liquid, which freezes, to be solidified, volume expansion is produced
Raw finite energy is not enough to damage sensor 6, meanwhile, filling block 3 is made of elastic material, when liquid curing freezes
When compressible filling block 3 volume be that solid ice reserves expansion space, to protect sensor 6 not damaged.
Specifically, shell includes upper cover 1 and pedestal 2, and sensor 6 and filling block 3 are all set in pedestal 2, and output line 7 is worn
The outside that upper cover 1 extends to upper cover 1 is crossed, upper cover 1 is detachably connected with pedestal 2.Shell adopts a split structure, convenient for sensing
The progress of 6 encapsulation work of device.
Wherein, pedestal 2 has installation position, facilitates the installation of sensor 6, sensor 6 is set in installation position, sensor 6
Bottom and installation position formed pressurizing chamber 4.
In addition, installing sealing ring 5 between pedestal 2 and sensor 6 additional, sealing ring 5 is set in installation position, enable sensor 6 with
It realizes and is tightly connected between pedestal 2.
In this embodiment, first through hole, the second through-hole and installation position are coaxially disposed.
More specifically, the cross section of filling block 3 is hexagon, setting and the matched hole of 3 formability of filling block in pedestal 2
Position, in this embodiment, filling block 3 is made of rubber material.
Further, internal screw thread is set on the inner wall of upper cover 1, external screw thread, upper cover 1 and pedestal 2 are set on the outer wall of pedestal 2
It is threadedly coupled, easy disassembly.
Further, it is respectively provided with annular knurl on the outer wall of upper cover 1 and pedestal 2, increases friction, is easily installed.
The encapsulating structure of the capacitive pressure transducer of the utility model, when packaged first by pedestal 2 with filling block 3
Pedestal 2 is fixed on hexagonal mounting tool by the hole location to match, then sealing ring 5 is lain in the installation position on pedestal 2, the
Sensor 6 is placed in the installation position on pedestal 2 by three steps, then upper cover 1 is passed through work by the external screw thread of internal screw thread and pedestal 2
Have spinning on sensor 6, so that upper cover 1, pedestal 2, sealing ring 5 and sensor 6 is formed an integral sealing body, then remove whole
Filling block 3 is filled in the encapsulation that pedestal 2 completes entire sensor 6 by body seal, solves small size ceramic capacitive pressure sensing
The shape small in size of device 6 is the problem of the bad force of cylindrical body.Liquid water starts solid after environment temperature is reduced to subzero
Change and freeze, volume expansion generates mechanical stress and continues to pressurize to sensor 6, is easy to be damaged in unprotect situation lower sensor 6
Bad, the conduction for not influencing within 2 milliliters and pressure is arranged in by filling block 3 in 4 volume of pressurizing chamber by the utility model, due to
Liquid capacity in pressurizing chamber 4 is limited, and when solidifying icing, finite energy caused by volume expansion is not enough to make sensor 6
At damage, while filling block 3 is made of the rubber material with certain elastic shrinkage ability, compressible when water cure freezes to fill out
The volume for filling block 3 is that the reserved expansion space of solid ice is tested to protect sensor 6 not damaged and increases to 4MPa, ring in hydraulic pressure
Sensor 6 is not damaged when border temperature drops to subzero 30 degree of liquid water freezings.
Specific case is applied in the utility model to be expounded the principles of the present invention and embodiment, it is above
The explanation of embodiment is merely used to help understand the method and its core concept of the utility model；Meanwhile for the one of this field
As technical staff, based on the idea of the present invention, there will be changes in the specific implementation manner and application range.To sum up
Described, the content of the present specification should not be construed as a limitation of the present invention.
Claims (8)
1. a kind of encapsulating structure of capacitive pressure transducer, it is characterised in that：Including shell and the biography being set in the shell
Sensor, one end of the sensor are arranged output line, and the output line extends to the outside of the shell, the shell with it is described
Pressurizing chamber is formed between the other end of sensor, the other end of the shell is arranged first through hole, also sets up and fill out in the shell
Block is filled, the second through-hole is arranged in the filling block, and the first through hole and second through-hole are connected with the pressurizing chamber, institute
It states filling block and is set to side of the sensor far from the output line, the filling block is made of flexible material.
2. the encapsulating structure of capacitive pressure transducer according to claim 1, it is characterised in that：The shell includes upper cover
And pedestal, the sensor and the filling block are all set in the pedestal, the output line passes through the upper cover and extends to
The outside of the upper cover, the upper cover are detachably connected with the base.
3. the encapsulating structure of capacitive pressure transducer according to claim 2, it is characterised in that：The pedestal has installation
Position, the sensor are set in the installation position, and the bottom of the sensor and the installation position form the pressurizing chamber.
4. the encapsulating structure of capacitive pressure transducer according to claim 3, it is characterised in that：The pedestal and the biography
Install sealing ring between sensor additional, the sealing ring is set in the installation position.
5. the encapsulating structure of capacitive pressure transducer according to claim 3, it is characterised in that：The first through hole, institute
It states the second through-hole and the installation position is coaxially disposed.
6. the encapsulating structure of capacitive pressure transducer according to claim 2, it is characterised in that：The filling block it is transversal
Face is hexagon, setting and the matched hole location of filling block formability in the pedestal.
7. the encapsulating structure of capacitive pressure transducer according to claim 2, it is characterised in that：On the inner wall of the upper cover
Internal screw thread is set, external screw thread is set on the outer wall of the pedestal, the upper cover is connected with the whorl of base.
8. the encapsulating structure of capacitive pressure transducer according to claim 2, it is characterised in that：The upper cover and the bottom
Annular knurl is respectively provided on the outer wall of seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820488968.7U CN208109324U (en) | 2018-04-04 | 2018-04-04 | A kind of encapsulating structure of capacitive pressure transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820488968.7U CN208109324U (en) | 2018-04-04 | 2018-04-04 | A kind of encapsulating structure of capacitive pressure transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208109324U true CN208109324U (en) | 2018-11-16 |
Family
ID=64119955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820488968.7U Active CN208109324U (en) | 2018-04-04 | 2018-04-04 | A kind of encapsulating structure of capacitive pressure transducer |
Country Status (1)
| Country | Link |
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| CN (1) | CN208109324U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108562392A (en) * | 2018-04-04 | 2018-09-21 | 合肥皖科智能技术有限公司 | A kind of encapsulating structure of capacitive pressure transducer |
| CN112291958A (en) * | 2020-10-15 | 2021-01-29 | 黄山弗兰德控制设备股份有限公司 | Intelligent electric actuating mechanism controlled through human-computer interface |
-
2018
- 2018-04-04 CN CN201820488968.7U patent/CN208109324U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108562392A (en) * | 2018-04-04 | 2018-09-21 | 合肥皖科智能技术有限公司 | A kind of encapsulating structure of capacitive pressure transducer |
| CN112291958A (en) * | 2020-10-15 | 2021-01-29 | 黄山弗兰德控制设备股份有限公司 | Intelligent electric actuating mechanism controlled through human-computer interface |
| CN112291958B (en) * | 2020-10-15 | 2022-11-08 | 钜盛装备股份有限公司 | Intelligent electric actuating mechanism controlled through human-computer interface |
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