CN209470800U - A kind of pressure transmitter configurations - Google Patents
A kind of pressure transmitter configurations Download PDFInfo
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- CN209470800U CN209470800U CN201920329764.3U CN201920329764U CN209470800U CN 209470800 U CN209470800 U CN 209470800U CN 201920329764 U CN201920329764 U CN 201920329764U CN 209470800 U CN209470800 U CN 209470800U
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- watchcase
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Abstract
The utility model discloses a kind of pressure transmitter configurations, including watchcase, measuring chamber, measuring chamber bottom is connected with pipe fitting, axial vertical multi-diameter shaft is equipped in measuring chamber, multi-diameter shaft is made of the circular shaft that multiple diameters successively reduce, the circular shaft lower end of bottom is equipped with resistance strain gage, the stepped locations of remaining each circular shaft are respectively equipped with resistance strain gage, signal acquisition module is equipped in watchcase, A/D module, processor module, resistance strain gage is connect with signal acquisition module input terminal respectively, signal acquisition module output end is connected by the signal input part of A/D module and processor module.The utility model can obtain pressure with the change rate of height change, and then can get accurate pressure value, improve accuracy of measurement.
Description
Technical field
The utility model relates to pressure transmitter field, specifically a kind of pressure transmitter configurations.
Background technique
Pressure transmitter is common pressure-measuring instrument, and under test gas or liquid are introduced into measuring chamber by pipe fitting
Resistance strain gage is arranged in body in measuring chamber, is transformed into the gas experienced, liquid physics pressure parameter by resistance strain gage
The electric signal of standard, to realize the measurement of pressure.Prior art pressure transmitter is mostly single strain gage testing, pipe fitting
Axial length cannot generally design it is too long, otherwise gas or liquid enter after pipe fitting highly rise can when can loss section partial pressure
Power causes measuring result error big.
Utility model content
The purpose of the utility model is to provide a kind of pressure transmitter configurations, to solve to manage in prior art pressure transmitter
Joint length can not be too long problem.
In order to achieve the above object, the technology employed by the present utility model is
A kind of pressure transmitter configurations, including watchcase, watchcase bottom are connected with measuring chamber, and measuring chamber bottom is connected with pipe and connects
Head, it is characterised in that: axial vertical multi-diameter shaft is equipped in measuring chamber, multi-diameter shaft is sequentially coaxially connected and composed by multiple circular shafts,
It is successively reduced in the diameter of the multiple circular shafts of vertical direction, the circular shaft lower end of bottom is equipped with resistance strain gage, remaining each circular shaft
Lower end stepped locations be respectively equipped with the resistance strain gage with step shape in a ring, signal acquisition mould is equipped in the watchcase
The resistance strain gage of block, A/D module, processor module, each circular shaft lower end is connect with signal acquisition module input terminal respectively, letter
Number acquisition module output end is connect with A/D module input terminal, the signal input part connection of A/D module output end and processor module.
A kind of pressure transmitter configurations, it is characterised in that: in multi-diameter shaft, the axial length of each circular shaft is equal,
The circular shaft lower end area of bottom is equal with the annular step surface area of remaining each circular shaft.
A kind of pressure transmitter configurations, it is characterised in that: the pipe fitting, which is connected to, is equipped with proportioning valve, in watchcase
Equipped with power supply, ratio valve-driving circuit, voltage comparator circuit, metal-oxide-semiconductor switching circuit, power supply passes through metal-oxide-semiconductor switching circuit, ratio
Valve-driving circuit is connect with proportioning valve, passes through metal-oxide-semiconductor switching circuit, proportioning valve drive circuitry to proportioning valve, place by power supply
Reason device module by signal output end is connect with one input terminal of voltage comparator circuit, and A/D module output end is also another with voltage comparator circuit
One input terminal connection, voltage comparator circuit output end are connect with metal-oxide-semiconductor switching circuit control terminal.
In the utility model, resistance strain gage is installed by multi-diameter shaft, can measure using the resistance strain gage of different height
Pressure value at different height can obtain pressure with the change of height change in processor module based on the pressure value of different height
Rate in conjunction with own dimensions and then can get accurate pressure value.Compared with prior art, the measurement result of the utility model
It not will receive the limitation of own dimensions bring error, improve accuracy of measurement.
Detailed description of the invention
Fig. 1 is the utility model structure diagram.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and examples.
As shown in Figure 1, a kind of pressure transmitter configurations, including watchcase 1,1 bottom of watchcase are connected with measuring chamber 2, measuring chamber 2
Bottom is connected with pipe fitting 3, and axial vertical multi-diameter shaft 4 is equipped in measuring chamber 2, and multi-diameter shaft 4 is sequentially coaxially connected by multiple circular shafts
Composition is connect, is successively reduced in the diameter of the multiple circular shafts of vertical direction, the circular shaft lower end of bottom is equipped with resistance strain gage 5, remaining
The lower end stepped locations of each circular shaft are respectively equipped with the resistance strain gage 6 with step shape in a ring, adopt in watchcase 1 equipped with signal
Collect module 7, A/D module 8, processor module 9, the resistance strain gage of each circular shaft lower end respectively with 7 input terminal of signal acquisition module
Connection, 7 output end of signal acquisition module are connect with 8 input terminal of A/D module, the signal of A/D module 8 output end and processor module 9
Input terminal connection.
In multi-diameter shaft, the axial length of each circular shaft is equal, circular shaft lower end area and remaining each circular shaft of bottom
Annular step surface area is equal.
The connection of pipe fitting 3 is equipped with proportioning valve 10, is equipped with power supply 11, ratio valve-driving circuit 12, voltage in watchcase 1 and compares
Circuit 13, metal-oxide-semiconductor switching circuit 14, power supply 11 are connected by metal-oxide-semiconductor switching circuit 14, ratio valve-driving circuit 12 and proportioning valve 10
It connects, proportioning valve 10,9 signal of processor module is supplied power to by metal-oxide-semiconductor switching circuit 14, ratio valve-driving circuit 12 by power supply 11
Output end is connect with 13 1 input terminals of voltage comparator circuit, and also another is defeated with voltage comparator circuit 13 for 8 output end of A/D module
Enter end connection, 13 output end of voltage comparator circuit is connect with 14 control terminal of metal-oxide-semiconductor switching circuit.Processor module compares to voltage
Circuit provides a reference voltage, and when there is instantaneous high pressure, voltage comparator circuit, which generates output signal, makes metal-oxide-semiconductor switching circuit
Conducting, and then so that proportioning valve is worked to be adjusted into the Fluid pressure of pipe fitting, prevent instantaneous high pressure from damaging internal sensor devices.
Claims (3)
1. a kind of pressure transmitter configurations, including watchcase, watchcase bottom is connected with measuring chamber, and measuring chamber bottom is connected with pipe and connects
Head, it is characterised in that: axial vertical multi-diameter shaft is equipped in measuring chamber, multi-diameter shaft is sequentially coaxially connected and composed by multiple circular shafts,
It is successively reduced in the diameter of the multiple circular shafts of vertical direction, the circular shaft lower end of bottom is equipped with resistance strain gage, remaining each circular shaft
Lower end stepped locations be respectively equipped with the resistance strain gage with step shape in a ring, signal acquisition mould is equipped in the watchcase
The resistance strain gage of block, A/D module, processor module, each circular shaft lower end is connect with signal acquisition module input terminal respectively, letter
Number acquisition module output end is connect with A/D module input terminal, the signal input part connection of A/D module output end and processor module.
2. a kind of pressure transmitter configurations according to claim 1, it is characterised in that: in multi-diameter shaft, the axis of each circular shaft
To equal length, the circular shaft lower end area of bottom is equal with the annular step surface area of remaining each circular shaft.
3. a kind of pressure transmitter configurations according to claim 1, it is characterised in that: the pipe fitting connection is equipped with ratio
Example valve, watchcase is interior to be equipped with power supply, ratio valve-driving circuit, voltage comparator circuit, metal-oxide-semiconductor switching circuit, and power supply is opened by metal-oxide-semiconductor
Powered-down road, ratio valve-driving circuit are connect with proportioning valve, pass through metal-oxide-semiconductor switching circuit, proportioning valve drive circuitry by power supply
To proportioning valve, processor module signal output end is connect with one input terminal of voltage comparator circuit, A/D module output end also with electricity
The connection of another input terminal of comparison circuit is pressed, voltage comparator circuit output end is connect with metal-oxide-semiconductor switching circuit control terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920329764.3U CN209470800U (en) | 2019-03-15 | 2019-03-15 | A kind of pressure transmitter configurations |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920329764.3U CN209470800U (en) | 2019-03-15 | 2019-03-15 | A kind of pressure transmitter configurations |
Publications (1)
| Publication Number | Publication Date |
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| CN209470800U true CN209470800U (en) | 2019-10-08 |
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| CN201920329764.3U Active CN209470800U (en) | 2019-03-15 | 2019-03-15 | A kind of pressure transmitter configurations |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109974923A (en) * | 2019-03-15 | 2019-07-05 | 上海电仪仪器仪表有限公司 | A kind of pressure transmitter configurations |
-
2019
- 2019-03-15 CN CN201920329764.3U patent/CN209470800U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109974923A (en) * | 2019-03-15 | 2019-07-05 | 上海电仪仪器仪表有限公司 | A kind of pressure transmitter configurations |
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