CN209102282U - A kind of diaphragm pressure sensor prover - Google Patents
A kind of diaphragm pressure sensor prover Download PDFInfo
- Publication number
- CN209102282U CN209102282U CN201822259513.0U CN201822259513U CN209102282U CN 209102282 U CN209102282 U CN 209102282U CN 201822259513 U CN201822259513 U CN 201822259513U CN 209102282 U CN209102282 U CN 209102282U
- Authority
- CN
- China
- Prior art keywords
- pressure sensor
- cylinder body
- diaphragm pressure
- calibration
- air bag
- 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
Links
Abstract
The utility model relates to a kind of diaphragm pressure sensor provers, including appliance stand, the holding plane placed for respective films pressure sensor is provided on appliance stand, multiple calibration units are distributed on appliance stand on the upside of the holding plane, each calibration unit includes the calibration cylinder body for being used to fill liquid made of rigid material being vertically arranged, the lower end of each calibration cylinder body is equipped with the air bag being respectively used to the counter electrode point pressure on diaphragm pressure sensor, air bag is fabricated from a flexible material, air bag is communicated with the inner cavity of the calibration cylinder body, guiding movement is equipped with loading piston along the vertical direction for the upper end of calibration cylinder body, loading piston upper end has the loading end placed for corresponding counterweight, diaphragm pressure sensor prover further includes for detecting pressure sensor hydraulic in the calibration cylinder body.The utility model provides a kind of diaphragm pressure sensor prover of not easy damaged diaphragm pressure sensor.
Description
Technical field
The utility model relates to the diaphragm pressure sensor provers in calibrator (-ter) unit.
Background technique
Diaphragm pressure sensor is a kind of common pressure sensor, existing diaphragm pressure sensor such as Chinese patent
Pressure sensor disclosed in CN105806517A, the pressure sensor include that upper electrode layer, lower electrode layer and being arranged in powers on
Pole layer, the insulating layer between lower electrode layer are provided with lead to corresponding with the electrode on upper electrode layer, lower electrode layer on insulating layer
The electrode points of the corresponding arrangement of multiple groups are distributed on upper electrode layer, lower electrode layer for hole.When diaphragm pressure sensor is pressurized, above and below
Resistance on electrode layer between corresponding electrode points changes, and calculates film according to the resistance variation between counter electrode point
Pressure suffered by pressure sensor corresponding position.
For the measurement accuracy for guaranteeing diaphragm pressure sensor, need regularly to calibrate diaphragm pressure sensor, and
Due to the special construction of diaphragm pressure sensor, rigidity calibrating installation in the prior art presses to diaphragm pressure sensor
When, it is particularly easy to damage diaphragm pressure sensor, causes the expendable damage of diaphragm pressure sensor.
Utility model content
The purpose of this utility model is to provide a kind of diaphragm pressure sensors of not easy damaged diaphragm pressure sensor
Prover.
In order to solve the above technical problems, the technical solution in the utility model is as follows:
A kind of diaphragm pressure sensor prover, including appliance stand are provided with for respective films pressure on appliance stand
Multiple calibration units, each school is distributed on appliance stand in the holding plane that force snesor is placed on the upside of the holding plane
Quasi- unit include be vertically arranged made of rigid material for filling the calibration cylinder body of liquid, under each calibration cylinder body
End is equipped with the air bag being respectively used to the counter electrode point pressure on diaphragm pressure sensor, and air bag is fabricated from a flexible material,
Air bag is communicated with the inner cavity of the calibration cylinder body, and calibrating the upper end of cylinder body, guiding movement is equipped with loading piston along the vertical direction,
Loading piston upper end has the loading end placed for corresponding counterweight, and diaphragm pressure sensor prover further includes for detecting
State pressure sensor hydraulic in calibration cylinder body.
The pressure sensor is the ceramic pressure sensor being installed on the downside of loading piston.
Mounting groove is offered on loading piston lower end surface, the ceramic pressure sensor is installed in the mounting groove.
The calibration cylinder body includes Master cylinder body and the internal diameter major diameter section cylinder body bigger than Master cylinder body for being set to Master cylinder body upper end,
The air bag is set to the Master cylinder body lower end, and the inner wall guiding of the loading piston and major diameter section cylinder body is slidably matched.
The bottom of air bag is plane.
The utility model has the following beneficial effects: diaphragm pressure is passed when needing to calibrate diaphragm pressure sensor
Sensor is placed on the loading end of appliance stand, places counterweight on the loading end of corresponding calibration unit, counterweight drives loading piston
It moves and to calibrate the intracorporal liquid generation pressure of cylinder, which is acted on the counter electrode of diaphragm pressure sensor by cylinder
Point pressure, the counter electrode point of diaphragm pressure sensor is calibrated by the pressure sensor of calibration unit, air bag with it is thin
It is flexible contact between membrane pressure sensor, excessive damage will not be caused to diaphragm pressure sensor, is effectively protected thin
Membrane pressure sensor.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of one embodiment of the utility model.
Specific embodiment
A kind of embodiment of diaphragm pressure sensor prover includes appliance stand as shown in Figure 1:, under appliance stand includes
Layer bracket 13 and the upper layer bracket 4 being connected by four guide posts 5 with lower floor support, upper layer bracket, lower floor support and guide post
It is fixed relationship, multiple calibration units 1 is distributed in upper layer bracket 4, each calibration unit 1 is distributed in array, and each calibration is single
Member includes being vertically arranged for filling the calibration cylinder body 2 of liquid, calibrates and is provided with pouring orifice on cylinder body, calibration cylinder body is fixed
In in upper layer bracket 4, the present embodiment alignment cylinder body is made of the rigid material of metal material, length 30cm.Each calibration
The lower end of cylinder body is equipped with the air bag 14 being respectively used to the counter electrode point pressure on diaphragm pressure sensor, air bag and calibration
Cylinder body communicates, and the upper end of air bag is fixed to be placed on calibration cylinder body lower end, and air bag is fabricated from a flexible material, and air bag is by Buddhist nun in the present embodiment
Imperial material is made, and does not have elasticity, the lower end surface of air bag is a plane, to facilitate the conversion of pressure value.Calibrating cylinder body includes
Master cylinder body and the internal diameter for the being set to Master cylinder body upper end major diameter section cylinder body 3 bigger than Master cylinder body, in major diameter section cylinder body 3 along the vertical direction
Guiding movement is equipped with loading piston 17, and the upper surface of loading piston constitutes the loading end placed for corresponding counterweight 18, carrying
The lower end of piston 17 offers mounting groove, is equipped in mounting groove for pressure sensor 16 hydraulic in testing calibration cylinder body,
Pressure sensor in the present embodiment is ceramic pressure sensor, and ceramic pressure sensor is the new generation connection in Shenzhen in the present embodiment
The AP801 type Ceramic Piezoresistive Pressure Transducer of Co., Ltd, section production, is patty structure, can be installed on loading piston
Downside, not to impacting on the upside of loading piston, therefore what be can be convenient places counterweight on loading piston.Loading piston
The sealing ring realized and sealed between the two is provided between major diameter section cylinder body.
Pressure sensor can measure the liquid pressure in calibration unit, the contact according to air bag with diaphragm pressure sensor
Area can converse contact pressure, and the internal diameter of Master cylinder body is less than the internal diameter of major diameter section cylinder body, to facilitate setting for pressure sensor
Set the processing with loading piston.
About the 3 major diameter section cylinder body of two neighboring calibration unit is staggeredly arranged, the major diameter section cylinder of two neighboring calibration unit
The projection of body in above-below direction has overlapping region.Guiding movement is equipped with placement plate 6 along the vertical direction in each guide post, places
The upper face of plate constitutes the holding plane placed for diaphragm pressure sensor 17, is provided with driving placement plate on lower floor support 13
The placement plate driving mechanism moved along guide post.The guide groove 9 extended in left-right direction, placement plate are offered on lower floor support 13
Driving mechanism includes the left jacking block 12 that guiding movement is assemblied in guide groove and right jacking block 11, and placement plate driving mechanism is also wrapped
The turn-screw 8 that axis extends in left-right direction is included, the right end coaxial line of turn-screw is fixed with handwheel 7, left jacking block, right top
Rise block and have and be threadedly engaged with turn-screw and oppositely oriented motion thread, left jacking block, right jacking block upper end have and incline
Wedge surface 10 tiltedly is jacked towards opposite jacking block, the lower end of placement plate has and corresponding jacking wedge surface adaptation sliding contact cooperation
Placement plate wedge surface.
In use, under the pressure of counterweight 18, calibrating the intracorporal hydraulic oil of cylinder in 17 upper ends counterweight 18 of loading piston
Generate pressure.Handwheel is rotated, the cooperation of motion thread on turn-screw and left jacking block, right jacking block, turn-screw band are passed through
Move left jacking block, right jacking block is moved away from, during left jacking block, right jacking block are moved away from, pass through jacking block jacking
The cooperation of wedge surface and placement plate wedge surface, placement plate is jacked up, up to diaphragm pressure sensor and corresponding balloon contacts, in calibration essence
Spend it is not high in the case where, the contact area S of the P and air bag and diaphragm pressure sensor that are measured by pressure sensor can be in the hope of
Base measuring pressure F=PS is obtained, in the higher situation of calibration accuracy, it may be considered that liquid height brings pressure values changing factor to school
The influence of quasi- result, base measuring pressure F=(P1+ ρ gh) S, ρ indicate that fluid density, h indicate pressure sensor apart from air bag bottom
Highly, g indicates acceleration of gravity.Placement plate driving mechanism uses the turn-screw structure of lateral arrangement, advantageously reduces product
Whole height；The projection of the major diameter section cylinder body of two neighboring calibration unit in above-below direction has overlapping region, advantageous in this way
In the radial dimension for reducing product entirety, so that the structure of product entirety is more compact.In other realities of the utility model
Apply in example: placement plate driving mechanism can also be the driving mechanism that can be realized driving placement plate and move up and down of other forms,
Placement plate is driven to move up and down say by driving cylinder；Certain placement plate can also be the fixation that a height is unable to adjust
Placement plate.
Claims (5)
1. a kind of diaphragm pressure sensor prover, including appliance stand, it is characterised in that: be provided on appliance stand for phase
The holding plane of diaphragm pressure sensor placement is answered, it is single that multiple calibrations are distributed on appliance stand on the upside of the holding plane
Member, each calibration unit include the calibration cylinder body for being used to fill liquid made of rigid material being vertically arranged, each calibration
The lower end of cylinder body is equipped with the air bag being respectively used to the counter electrode point pressure on diaphragm pressure sensor, and air bag is by flexible material
Material is made, and air bag is communicated with the inner cavity of the calibration cylinder body, and calibrating the upper end of cylinder body, guiding movement is equipped with and holds along the vertical direction
Piston is carried, loading piston upper end has the loading end placed for corresponding counterweight, and diaphragm pressure sensor prover further includes using
In pressure sensor hydraulic in the detection calibration cylinder body.
2. diaphragm pressure sensor prover according to claim 1, it is characterised in that: the pressure sensor is installation
Ceramic pressure sensor on the downside of loading piston.
3. diaphragm pressure sensor prover according to claim 2, it is characterised in that: loading piston opens up on lower end surface
There is mounting groove, the ceramic pressure sensor is installed in the mounting groove.
4. diaphragm pressure sensor prover according to claim 2, it is characterised in that: the calibration cylinder body includes master cylinder
Body and the internal diameter for the being set to Master cylinder body upper end major diameter section cylinder body bigger than Master cylinder body, the air bag are set under the Master cylinder body
The inner wall guiding at end, the loading piston and major diameter section cylinder body is slidably matched.
5. diaphragm pressure sensor prover described in any one according to claim 1 ~ 4, it is characterised in that: the bottom of air bag
It is plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822259513.0U CN209102282U (en) | 2018-12-30 | 2018-12-30 | A kind of diaphragm pressure sensor prover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822259513.0U CN209102282U (en) | 2018-12-30 | 2018-12-30 | A kind of diaphragm pressure sensor prover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209102282U true CN209102282U (en) | 2019-07-12 |
Family
ID=67163653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822259513.0U Expired - Fee Related CN209102282U (en) | 2018-12-30 | 2018-12-30 | A kind of diaphragm pressure sensor prover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209102282U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109489899A (en) * | 2018-12-30 | 2019-03-19 | 河南工业大学 | Diaphragm pressure sensor prover |
-
2018
- 2018-12-30 CN CN201822259513.0U patent/CN209102282U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109489899A (en) * | 2018-12-30 | 2019-03-19 | 河南工业大学 | Diaphragm pressure sensor prover |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190712 Termination date: 20201230 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |