CN107340094A - A kind of pressure transmitter device that can shield electromagnetic interference - Google Patents
A kind of pressure transmitter device that can shield electromagnetic interference Download PDFInfo
- Publication number
- CN107340094A CN107340094A CN201710540021.6A CN201710540021A CN107340094A CN 107340094 A CN107340094 A CN 107340094A CN 201710540021 A CN201710540021 A CN 201710540021A CN 107340094 A CN107340094 A CN 107340094A
- Authority
- CN
- China
- Prior art keywords
- pressure transmitter
- stationary half
- lock
- pressure
- electromagnetic interference
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
- G01L9/02—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of variations in ohmic resistance, e.g. of potentiometers, electric circuits therefor, e.g. bridges, amplifiers or signal conditioning
- G01L9/04—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of variations in ohmic resistance, e.g. of potentiometers, electric circuits therefor, e.g. bridges, amplifiers or signal conditioning of resistance-strain gauges
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/06—Means for preventing overload or deleterious influence of the measured medium on the measuring device or vice versa
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/06—Means for preventing overload or deleterious influence of the measured medium on the measuring device or vice versa
- G01L19/069—Protection against electromagnetic or electrostatic interferences
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
- G01L9/0041—Transmitting or indicating the displacement of flexible diaphragms
- G01L9/0072—Transmitting or indicating the displacement of flexible diaphragms using variations in capacitance
Abstract
The invention discloses a kind of pressure transmitter device that can shield electromagnetic interference, described device includes：Pressure transmitter, the first stationary half, the second stationary half, spacing steel plate, connection steel pole, the first lock, the second lock；First stationary half and the second stationary half are arranged the pipeline external surface for being fixed on pressure transmitter detection, screen pack is installed in the measurement conduit of pressure transmitter, connection steel pole one end is fixedly connected with the first stationary half, the connection steel pole other end is connected with spacing Interal fixation, pressure transmitter is arranged on the pipeline of detection, spacing steel plate is located at directly over pressure transmitter, and distance of the spacing steel plate at the top of pressure transmitter is less than the length of pressure transmitter insertion installation screw, prevent dregs from entering test conduit by screen pack, and then prevent from testing and deposition is formed in conduit, ensure measurement accuracy, and the technique effect with anti-theft feature.
Description
Technical field
The present invention relates to pressure transmitter research field, in particular it relates to which a kind of pressure that can shield electromagnetic interference becomes
Send device device.
Background technology
Pressure transmitter is a kind of to convert pressure into pneumatic signal or electromotive signal is controlled equipment with teletransmission.
The physical pressure parameters such as gas that load cell is experienced, liquid can be transformed into the electric signal of standard by it
(such as 4~20mADC), measured with supplying the secondary meters such as indicator alarm, recorder, adjuster, indicate and process adjust
Section.
Pressure transmitter is a kind of sensor the most commonly used in industrial practice, and it is widely used in various industrial automatic control rings
Border, be related to water conservancy and hydropower, railway traffic, intelligent building, production automatic control, Aero-Space, military project, petrochemical industry, oil well, electric power, ship,
Numerous industries such as lathe, pipeline.
Pressure transmitter has electrodynamic type and the major class of pneumatic type two.DYN dynamic unified output signal be 0~10mA, 4~
The DC signals such as 20mA or 1~5V.The unified output signal of pneumatic type is 20~100Pa gas pressure.
Pressure transmitter by different transfer principles can be divided into power (torque) balanced type, condenser type, inductance type, strain-type and
Frequency type etc., it following is a brief introduction of the knowledge such as the principle, structure, use, maintenance and verification of several pressure (differential pressure) transmitter.
Pressure signal is passed to electronic equipment by the main function of pressure transmitter, and then in its principle of Computer display pressure
Generally：The mechanical signal of this pressure of hydraulic pressure is transformed into electronic signal pressure and voltage or electricity as electric current (4-20mA)
It is linear to flow size, usually proportional relation.So transmitter output voltage or electric current with pressure increase and increase by
This show that two kinds of pressure of the measured medium of the relational expression pressure transmitter of a pressure and voltage or electric current are passed through high and low two pressure
Power room, low pressure chamber pressure use atmospheric pressure or vacuum, act on the both sides isolation diaphragm of δ first (i.e. sensing element), by every
Measuring diaphragm both sides are sent to from the filling liquid in piece and element.
Pressure transmitter respectively forms a capacitor by the electrode on measuring diaphragm and both sides insulating trip.Work as pressure at both sides
When inconsistent, measuring diaphragm is caused to produce displacement, its displacement and pressure differential are directly proportional, therefore both sides capacitance is just, passes through
Vibration and demodulating link.
The electric elements that pressure transmitter experiences pressure are generally resistance strain gage, and resistance strain gage is a kind of by measured piece
On pressure conversion turn into a kind of Sensitive Apparatus of electric signal.It is at most metal resistance strain gauge and half that resistance strain gage, which is applied,
Two kinds of conductor foil gauge.Metal resistance strain gauge has two kinds of thread foil gauge and metal foil-like foil gauge again.Typically will strain
Piece is closely bonded in by special binder to be produced on mechanics strain matrix, when stress variation occurs for matrix stress, electricity
Resistance foil gauge also produces deformation together, the resistance of foil gauge is changed, is changed so that being added in ohmically voltage.
Pressure transmitter is to be connected through a screw thread to be fixed on test pipeline at work, by test conduit insertion testing tube
To be tested, but tested long afterwards in road, the dregs tested in pipeline easily deposit in test conduit, cause to block, and then
Cause test inaccurate.And because pressure transmitter cost is higher, existing pressure transmitter is easily stolen, theft personnel are only
Need to reversely rotate out pressure transmitter from mounting hole, anti-theft effect is poor.
In summary, present inventor has found above-mentioned technology extremely during the present application technical scheme is realized
Following technical problem less be present：
In the prior art, the dregs that existing pressure transmitter is present in test pipeline easily sink in test conduit
Product, causes to block, and then causes test inaccurate, and easily stolen technical problem.
The content of the invention
The invention provides a kind of pressure transmitter device that can shield electromagnetic interference, solves existing pressure inverting
The dregs that device is present in test pipeline easily deposit in test conduit, cause to block, and then cause test inaccurate, and hold
Easily stolen technical problem, prevent dregs from entering test conduit by screen pack, and then prevent from testing and deposition is formed in conduit, protect
Hinder measurement accuracy, and the technique effect with anti-theft feature.
In order to solve the above technical problems, this application provides a kind of pressure transmitter device that can shield electromagnetic interference,
Described device includes：
Pressure transmitter, the first stationary half, the second stationary half, spacing steel plate, connection steel pole, the first lock, second
Lock；First stationary half one end and second stationary half one end hinge connection, the first stationary half other end and the first lock
Connection, the second stationary half other end and the second lock connect, and the first lock is connected with the second snap fit fixes half by first
Ring and the second stationary half are arranged the pipeline external surface for being fixed on pressure transmitter detection, pacify in the measurement conduit of pressure transmitter
Equipped with screen pack, connection steel pole one end is fixedly connected with the first stationary half, and the connection steel pole other end connects with spacing Interal fixation
Connect, pressure transmitter is arranged on the pipeline of detection, and spacing steel plate is located at directly over pressure transmitter, and spacing steel plate distance pressure
Distance at the top of power transmitter is less than the length of pressure transmitter insertion installation screw.
Wherein, the principle of the application is by being provided with screen pack in the measurement conduit of pressure transmitter, passing through filtering
Net prevents dregs from entering test conduit, and then prevents from testing and deposition is formed in conduit.Traditional pressure transmitter is pacified by screw thread
Dress is fixed on detection pipeline, and theft personnel only need reversion to be stolen, and the application can be to prevent using spacing steel plate
Only invert, stop that pressure transmitter takes out from installation screw, and then progress is antitheft, is specially：Pressure transmitter is pacified first
In installation screw, then the first stationary half, the second stationary half are set on detection pipeline, then utilize the first lock
Button and the second lock carry out cooperation locking, and after locking fixes, spacing steel plate is located at directly over pressure transmitter, and spacing steel plate
Distance at the top of pressure transmitter is less than the length of pressure transmitter insertion installation screw, and then prevents pressure transmitter from taking
Go out, when needing to take out, open lock, remove spacing steel plate.
Wherein, the shell of the pressure transmitter is bilayer, and outer layer is steel, and internal layer be lead material, and outer layer and internal layer it
Between be filled with coolant.Pressure transmitter is sensitive device, and high-intensity magnetic field and high temperature can be impacted to its measurement result, caused
Measurement result is inaccurate, and steel shell is provided with the application and carries out external force protection, then there is provided stereotype internal layer, magnetic field is entered
Row shielding, then filling coolant prevents high temperature in the cavity between two layers, so as to can also carry out standard under conditions of sternness
True test, it is adaptable.
Wherein, the first stationary half, the second stationary half inwall are uniformly provided with multiple projections.Multiple projections are set to increase
The fixed effect of semi-ring is fixed, the personnel that avoid theft move stationary half.
Wherein, first stationary half, the second stationary half outer wall uniformly offer multiple fixing threaded holes, fixing screws
One end is inserted in pipeline to be detected through fixing threaded hole.Using the fixing threaded hole of insertion, may further ensure that stationary half with
The fixed effect of pipeline is detected, the personnel that avoid theft move stationary half.
One or more technical schemes that the application provides, have at least the following technical effects or advantages：
Solve the dregs that existing pressure transmitter is present in test pipeline easily to deposit in test conduit, cause to block up
Plug, and then cause test inaccurate, and easily stolen technical problem, prevent dregs from entering test conduit by screen pack,
And then prevent from testing and deposition is formed in conduit, ensure measurement accuracy, and the technique effect with anti-theft feature.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding the embodiment of the present invention, forms one of the application
Point, do not form the restriction to the embodiment of the present invention；
Fig. 1 is the structural representation for the pressure transmitter device that electromagnetic interference can be shielded in the application；
Fig. 2 is the structural representation of clamping rings in the application；
Fig. 3 is the structural representation of pressure transmitter shell in the application.
Embodiment
The invention provides a kind of pressure transmitter device that can shield electromagnetic interference, solves existing pressure inverting
The dregs that device is present in test pipeline easily deposit in test conduit, cause to block, and then cause test inaccurate, and hold
Easily stolen technical problem, prevent dregs from entering test conduit by screen pack, and then prevent from testing and deposition is formed in conduit, protect
Hinder measurement accuracy, and the technique effect with anti-theft feature.
It is below in conjunction with the accompanying drawings and specific real in order to be more clearly understood that the above objects, features and advantages of the present invention
Mode is applied the present invention is further described in detail.It should be noted that in the case where not conflicting mutually, the application's
Feature in embodiment and embodiment can be mutually combined.
Many details are elaborated in the following description to facilitate a thorough understanding of the present invention, still, the present invention may be used also
To be implemented using other different from the other modes in the range of being described herein, therefore, protection scope of the present invention is not by under
The limitation of specific embodiment disclosed in face.
Fig. 1 is refer to, this application provides a kind of pressure transmitter device that can shield electromagnetic interference, described device bag
Include：
Pressure transmitter 1, the first stationary half 6, the second stationary half 8, spacing steel plate 4, connection steel pole 5, first latch
9th, the second lock 10；First stationary half one end and second stationary half one end hinge connection, the first stationary half other end with
First lock connection, the second stationary half other end connect with the second lock, and first latches and be connected the with the second snap fit
One stationary half and the second stationary half are arranged the pipeline external surface for being fixed on pressure transmitter detection, the measurement of pressure transmitter
Screen pack 3 is installed in conduit 2, connection steel pole one end is fixedly connected with the first stationary half, connect the steel pole other end with it is spacing
Interal fixation is connected, and pressure transmitter is arranged on the pipeline 7 of detection, and spacing steel plate is located at directly over pressure transmitter, and is limited
Distance of the position steel plate at the top of pressure transmitter is less than the length of pressure transmitter insertion installation screw.
Wherein, the principle of the application is by being provided with screen pack in the measurement conduit of pressure transmitter, passing through filtering
Net prevents dregs from entering test conduit, and then prevents from testing and deposition is formed in conduit.Traditional pressure transmitter is pacified by screw thread
Dress is fixed on detection pipeline, and theft personnel only need reversion to be stolen, and the application can be to prevent using spacing steel plate
Only invert, stop that pressure transmitter takes out from installation screw, and then progress is antitheft, is specially：Pressure transmitter is pacified first
In installation screw, then the first stationary half, the second stationary half are set on detection pipeline, then utilize the first lock
Button and the second lock carry out cooperation locking, and after locking fixes, spacing steel plate is located at directly over pressure transmitter, and spacing steel plate
Distance at the top of pressure transmitter is less than the length of pressure transmitter insertion installation screw, and then prevents pressure transmitter from taking
Go out, when needing to take out, open lock, remove spacing steel plate.
Wherein, the shell of the pressure transmitter is bilayer, and outer layer 11 is steel, and internal layer 12 is lead material, and outer layer with it is interior
Coolant is filled between layer.Pressure transmitter is sensitive device, and high-intensity magnetic field and high temperature can impact to its measurement result,
Cause measurement result inaccurate, steel shell is provided with the application and carries out external force protection, then there is provided stereotype internal layer, to magnetic
Shielded, then filling coolant prevents high temperature in the cavity between two layers, so as to can also enter under conditions of sternness
Row accurately test, it is adaptable.
Wherein, the first stationary half, the second stationary half inwall are uniformly provided with multiple projections.Multiple projections are set to increase
The fixed effect of semi-ring is fixed, the personnel that avoid theft move stationary half.
Wherein, first stationary half, the second stationary half outer wall uniformly offer multiple fixing threaded holes, fixing screws
One end is inserted in pipeline to be detected through fixing threaded hole.Using the fixing threaded hole of insertion, may further ensure that stationary half with
The fixed effect of pipeline is detected, the personnel that avoid theft move stationary half.
One or more technical schemes that the application provides, have at least the following technical effects or advantages：
Solve the dregs that existing pressure transmitter is present in test pipeline easily to deposit in test conduit, cause to block up
Plug, and then cause test inaccurate, and easily stolen technical problem, prevent dregs from entering test conduit by screen pack,
And then prevent from testing and deposition is formed in conduit, ensure measurement accuracy, and the technique effect with anti-theft feature.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creation
Property concept, then can make other change and modification to these embodiments.So appended claims be intended to be construed to include it is excellent
Select embodiment and fall into having altered and changing for the scope of the invention.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these changes and modification.
Claims (4)
1. a kind of pressure transmitter device that can shield electromagnetic interference, it is characterised in that described device includes：
Pressure transmitter, the first stationary half, the second stationary half, spacing steel plate, connection steel pole, the first lock, the second lock；
First stationary half one end and second stationary half one end hinge connection, the first stationary half other end and the first lock connect,
The second stationary half other end and the second lock are connected, and the first lock is connected with the second snap fit by the first stationary half and the
Two stationary halfs are arranged the pipeline external surface for being fixed on pressure transmitter detection, are provided with the measurement conduit of pressure transmitter
Filter screen, connection steel pole one end are fixedly connected with the first stationary half, and the connection steel pole other end is connected with spacing Interal fixation, pressure
Transmitter is arranged on the pipeline of detection, and spacing steel plate is located at directly over pressure transmitter, and spacing steel plate is apart from pressure inverting
Distance at the top of device is less than the length of pressure transmitter insertion installation screw.
2. the pressure transmitter device according to claim 1 that electromagnetic interference can be shielded, it is characterised in that the pressure
The shell of transmitter is bilayer, and outer layer is steel, and internal layer is lead material, and coolant is filled between outer layer and internal layer.
3. the pressure transmitter device according to claim 1 that electromagnetic interference can be shielded, it is characterised in that first fixes
Semi-ring, the second stationary half inwall are uniformly provided with multiple projections.
4. the pressure transmitter device according to claim 1 that electromagnetic interference can be shielded, it is characterised in that described first
Stationary half, the second stationary half outer wall uniformly offer multiple fixing threaded holes, and fixing screws one end is inserted through fixing threaded hole
In pipeline to be detected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710540021.6A CN107340094A (en) | 2017-07-05 | 2017-07-05 | A kind of pressure transmitter device that can shield electromagnetic interference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710540021.6A CN107340094A (en) | 2017-07-05 | 2017-07-05 | A kind of pressure transmitter device that can shield electromagnetic interference |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107340094A true CN107340094A (en) | 2017-11-10 |
Family
ID=60218966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710540021.6A Pending CN107340094A (en) | 2017-07-05 | 2017-07-05 | A kind of pressure transmitter device that can shield electromagnetic interference |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107340094A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202101808U (en) * | 2011-05-05 | 2012-01-04 | 安徽润佳电缆集团股份有限公司 | Device for mounting pressure transmitter |
| CN205958176U (en) * | 2016-08-22 | 2017-02-15 | 天津宇创屹鑫科技有限公司 | Pressure transmitter |
| CN205981528U (en) * | 2016-08-30 | 2017-02-22 | 北京空航航空科技有限公司 | Intelligent digital pressure gauge |
-
2017
- 2017-07-05 CN CN201710540021.6A patent/CN107340094A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202101808U (en) * | 2011-05-05 | 2012-01-04 | 安徽润佳电缆集团股份有限公司 | Device for mounting pressure transmitter |
| CN205958176U (en) * | 2016-08-22 | 2017-02-15 | 天津宇创屹鑫科技有限公司 | Pressure transmitter |
| CN205981528U (en) * | 2016-08-30 | 2017-02-22 | 北京空航航空科技有限公司 | Intelligent digital pressure gauge |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171110 |