CN206497002U - The digital output electromechanical integration SF of high reliability6Gas density transmitter - Google Patents
The digital output electromechanical integration SF of high reliability6Gas density transmitter Download PDFInfo
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- CN206497002U CN206497002U CN201621413073.4U CN201621413073U CN206497002U CN 206497002 U CN206497002 U CN 206497002U CN 201621413073 U CN201621413073 U CN 201621413073U CN 206497002 U CN206497002 U CN 206497002U
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- pressure sensor
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Abstract
The utility model belongs to transmitter field, more particularly to a kind of digital output electromechanical integration SF of high reliability6Gas density transmitter, it includes pressure interface（1）, bourdon tube（2）, kinematic link（3）, travelling gear（4）, pointer（5）, pressure sensor（6）, electronic circuit board（16）, connecting pipe（9）And sampling air chamber（11）；Pressure interface（1）With connecting pipe（9）Port respectively with sampling air chamber（11）Communicate；Connecting pipe（9）Another port and pressure sensor seat（12）Communicate；Bourdon tube（2）One end with sampling air chamber（11）Fixation is communicated, its other end and kinematic link（3）One end be fixedly connected；Pressure sensor（6）Signal transmission port connect electronic circuit board（16）Signal transmission port.The utility model can either local pointer be indicated, output is alarmed, locking contact, and analog current signal insulating properties height, strong interference immunity can be exported again.
Description
Technical field
The utility model belongs to transmitter field, more particularly to a kind of digital output electromechanical integration SF of high reliability6Gas
Volume density transmitter.
Background technology
High-voltage switch gear is one of visual plant of power plant, transformer station, in order to which electric power safely and reliably is sent into country
Power network, it is necessary to ensure that the equipment such as high-voltage switch gear is working properly, reliability service.Due to SF6Gas-insulated intensity is high, arc quenching characteristic
It is good, it has also become the preferred insulation arc-extinguishing medium of current high voltage electric equipment.SF6The arc quenching effect of gas depends on the close of its gas
SF in degree, effective monitoring device6The density of gas, prevents it from occurring the important guarantee that leakage is such equipment safety operation.Cause
This is, it is necessary to high-voltage switch gear SF6The density of gas is monitored in real time, and the SF in high-tension switch gear is grasped in time6Density is run
State.But conventional SF6 gas density is relay can not realize the transmission and centralized management of classifying alarm and data at present.With
The requirement of intelligent grid development, it is necessary to using a kind of monitoring mode of " online, in real time, teletransmission, concentration, intelligent, reliable ", realize
Monitoring transformer running status in real time, is that transformer state evaluation, risk analysis, fault diagnosis, Strategies of Maintenance decision-making are carried
It is very necessary for technical support.
At present, the SF that in the market occurs6Gas density transmitter substantially has three kinds, and the first is most traditional pointer instrument
Table, can only export the contact point signal of alarm and locking, it is necessary to which manual site records gas pressure, gas temperature, time and tabled look-up
The parameters such as density are calculated, and have certain limitation, it is unavoidable careless and inadvertent, there is the disadvantage of a poor in timeliness in artificial inspection
End, tends not to scent a hidden danger in time.Second is electronic type, can be with output digit signals, but is indicated without local, also not
Can output alarm and locking contact point signal, the structure of transmitter only with screw thread and cushion rubber connected mode, not using spy
Different encapsulating method, the sealing of transmitter it cannot be guaranteed that, and for high-voltage switch gear instrumentation, the sealing of transmitter is again
It is vital；There is no the design of any electromagnetism interference in density transmitter, scene has various electromagnetism
Interference and electrostatic, by the housing of transmitter, are applied directly to sensor, sensor are broken.The third simple electromechanics one
Body formula, the contact point signal and simulation electricity output of alarm and locking can be exported simultaneously, without data signal output, is not easy to concentrate
Management, can not meet the requirement of intelligent grid；Anti-interference Design is simple, and Electro Magnetic Compatibility is poor, and scene is 220KV or 500KV
In the environment of super-pressure, there is various electromagnetic interferences and electrostatic in scene, and sensor and circuit, which are broken, to be easy to damage.
Utility model content
The utility model be intended to overcome in place of the deficiencies in the prior art and provide one kind can either local pointer indicate, output
Alarm locking contact, again being capable of output digit signals, good airproof performance, insulating properties height, the strong high reliability numeral of Electro Magnetic Compatibility
Formula output electromechanical integration SF6Gas density transmitter.
In order to solve the above technical problems, what the utility model was realized in.
A kind of digital output electromechanical integration SF of high reliability6Gas density transmitter, it includes pressure interface, spring
Pipe, kinematic link, the travelling gear assigned in kinematic link end, pointer, pressure sensor, pressure sensor tetrafluoro shell, change
Send device housing, connecting pipe, sampling air chamber, pressure sensor seat, insulation board, digital signal interface；Alarm and block signal interface
And electronic circuit board；The pressure interface is communicated with sampling air chamber respectively with the port of connecting pipe；One end of the bourdon tube with
Sampling air chamber, which is fixed, to be communicated, and one end of its other end and kinematic link is fixedly connected；The other end of the kinematic link is through transmission
Gear is engaged with the end gear of pointer；The pressure sensor is placed on sensor holder；Outside the pressure sensor tetrafluoro
Shell is placed in outside pressure sensor；The pressure sensor pinboard is placed in pressure sensor tetrafluoro cover top portion, and and pressure
The signal transmission port of sensor and electronic circuit board connects；The insulation board is located at outside pressure sensor tetrafluoro outer casing bottom
Between shell of transducer；Described electronic circuit board is located at the top of insulation board, and is fixedly connected with shell of transducer；It is described
The signal transmission port of electronic circuit board connects with digital signal interface；The alarm and the signal transmission end of block signal interface
Mouth connects digital signal interface.
As a kind of preferred scheme, electronic circuit board described in the utility model includes power module, excitation module, V/I and turned
Change the mold block, amplifier, temperature sensor module and temperature signal amplification module；The excitation termination electric wire of the pressure sensor
The excitation module port of road plate；The output termination V/I modular converters of the pressure sensor and the port of amplifier；The pressure
The pressure conversion of pressure interface under test gas is voltage signal by force snesor, then is transmitted to V/I modular converters and be converted into electric current
Signal；The excitation module is through the amplifier pumping signal stable to pressure sensor；The temperature sensor module is by pressure
The temperature transition of interface under test gas is electric signal, and voltage signal is converted into by temperature signal amplification module.
Further, electronic circuit board described in the utility model also includes single-chip data acquisition module and 485 communication moulds
Block；The port phase of the single-chip data acquisition module respectively with temperature signal amplification module, V/I modular converters and amplifier
Connect；The single-chip data acquisition module communication interface connects with 485 communication module ports.
Further, the bottom of pressure sensor seat described in the utility model is provided with aperture, and the connecting pipe is through described small
Hole is communicated with the cavity of pressure sensor；The electronic circuit board also includes immunity module and isolation module；It is described anti-interference
The port of module connects with the port of V/I modular converters；The isolation module input port and single-chip data acquisition module
PORT COM connects；The isolation module output port connects with 485 communication module ports.
The utility model good airproof performance, strong interference immunity, alarm, locking contact point signal and digital signal output are simultaneously deposited.
Compared with prior art, the features of the present invention is in particular in：Changed in pointer density meter built with pressure sensor, V/I
Circuit, constant-current circuit, mu balanced circuit, temperature-compensation circuit, single-chip microcomputer and 485 communicating circuits, had made integrated density transmitter both
Can local pointer indicate, output alarm, locking contact, again can output digit signals, realize SF6 The intelligence of gas density
Change, substantially increase the function of transmitter.Anti-jamming circuit, the design of isolation circuit, electric wire are included on electronic circuit board
Road plate bottom increases insulation board, and tetrafluoro shell is increased in sensor external, and tetrafluoro shell upper is connected to pinboard, substantially increased
The electromagnetic compatibility and antijamming capability of transmitter.
Brief description of the drawings
The utility model is described in further detail with reference to the accompanying drawings and detailed description.Protection model of the present utility model
Enclose the statement by following content is not only limited to.
Fig. 1 is the utility model front view.
Fig. 2 is the utility model side view.
Fig. 3 is the utility model top view.
Fig. 4 is the utility model electronic circuit board partial circuit theory diagram.
In figure：1st, pressure interface；2nd, bourdon tube；3rd, kinematic link；4th, travelling gear；5th, pointer；6th, pressure sensor；
7th, pressure sensor tetrafluoro shell；8th, shell of transducer；9th, connecting pipe；10th, pinboard；11st, sampling air chamber；12nd, pressure sensing
Device seat；13rd, insulation board；14th, digital signal interface；15th, alarm and block signal interface；16th, electronic circuit board；17th, pointer gauge
Dial plate.
Embodiment
As illustrated, the digital output electromechanical integration SF of high reliability6Gas density transmitter, including pressure interface 1,
Bourdon tube 2, kinematic link 3, the travelling gear 4 assigned in the end of kinematic link 3, pointer 5, pressure sensor 6, pressure sensor four
Fluorine shell 7, shell of transducer 8, connecting pipe 9, sampling air chamber 11, pressure sensor seat 12, insulation board 13, digital signal interface
14；Alarm and block signal interface 15 and electronic circuit board 16；The port of the pressure interface 1 and connecting pipe 9 respectively with sampling
Air chamber 11 is communicated；One end of the bourdon tube 2 is fixed with sampling air chamber 11 and communicated, and one end of its other end and kinematic link 3 is consolidated
Surely connect；The other end of the kinematic link 3 is engaged through travelling gear 4 with the end gear of pointer 5；The pressure sensor 6
It is placed on sensor holder 12；The pressure sensor tetrafluoro shell 7 is placed in outside pressure sensor 6；The pressure sensor
Pinboard 10 is placed in the top of pressure sensor tetrafluoro shell 7, and with the signal transmission end of pressure sensor 6 and electronic circuit board 16
Mouth connects；The insulation board 13 is located between the bottom external of pressure sensor tetrafluoro shell 7 and shell of transducer 8；Described electricity
Sub- wiring board 16 is located at the top of insulation board 13, and is fixedly connected with shell of transducer 8；The signal of the electronic circuit board 16 is passed
Defeated port connects with digital signal interface 14；The signal transmission port of the alarm and block signal interface 15 connects data signal and connect
Mouth 14.
The utility model the pressure sensor seat 12 bottom be provided with aperture, the connecting pipe 9 through the aperture with
The cavity of pressure sensor 6 is communicated.
Electronic circuit board 16 described in the utility model include power module, excitation module, V/I modular converters and amplifier,
Temperature sensor module and temperature signal amplification module；The excitation of the excitation termination electronic circuit board 16 of the pressure sensor 6
Module port；The output termination V/I modular converters of the pressure sensor 6 and the port of amplifier；The pressure sensor 6
It is voltage signal by the pressure conversion of the under test gas of pressure interface 1, then transmits to V/I modular converters and be converted into current signal；Institute
Excitation module is stated through the amplifier pumping signal stable to pressure sensor 6；The temperature sensor module treats pressure interface 1
The temperature transition for surveying gas is electric signal, and voltage signal is converted into by temperature signal amplification module.
Electronic circuit board 16 described in the utility model also includes single-chip data acquisition module and 485 communication modules；It is described
Port of the single-chip data acquisition module respectively with temperature signal amplification module and V/I modular converters and amplifier connects；It is described
Single-chip data acquisition module communication interface connects with 485 communication module ports.It is 20 by the pressure value compensation under arbitrary temp
DEG C when pressure value（Commonly referred to as P20 values）, single-chip data acquisition module communication interface connects with 485 communication module ports,
The direct output digit signals P20 values of the utility model；The port of the single-chip data acquisition module and the port phase of amplifier
Connect.
The bottom of pressure sensor seat 12 described in the utility model is provided with aperture, and the connecting pipe 9 is through the aperture and pressure
The cavity of force snesor 6 is communicated；The electronic circuit board 16 also includes immunity module and isolation module；The immunity module
Port connect with the port of V/I modular converters；The isolation module input port and the communication of single-chip data acquisition module
Port connects；The isolation module output port connects with 485 communication module ports.
Referring to shown in Fig. 1~3, in specific make, the utility model includes pressure interface 1, bourdon tube 2, kinematic link
Travelling gear 4, pointer 5, pressure sensor 6, pressure sensor tetrafluoro shell 7, connecting pipe 9 3rd, assigned in the end of kinematic link 3,
Pinboard 10, sampling air chamber 11, pressure sensor seat 12, insulation board 13, digital signal interface 14；Alarm and block signal interface
15 and electronic circuit board 16.
The utility model electronic circuit board 16 includes power module, excitation module, V/I modular converters, amplifier, temperature
Sensor assembly, temperature signal amplification module, single-chip data acquisition module, 485 communication modules, isolation module and anti-interference electricity
Road（Referring to Fig. 4）；The utility model pressure interface 1 is connected with connecting pipe 9, sampling air chamber 11.SF6 Gas passes through pressure interface
1 be introduced into sampling air chamber 11 in, gas pressure signal is sent in bourdon tube 2 all the way by connecting pipe 9, bourdon tube by
Kinematic link 3 and the motion of travelling gear 4 is driven to drive pointer 5 to move to pressure；Connecting pipe 9 transmits another road pressure
Signal is to pressure sensor 6.
The excitation end of pressure sensor 6 described in the utility model is connected with electronic circuit board 16, pressure sensor 6
Output end is connected by signal wire with the input of the V/I modular converters on electronic circuit board 16.Pressure described in the utility model
The pressure conversion of the under test gas of pressure interface 1 is voltage signal by force snesor 6, then is transmitted to the conversion of V/I modular converters
Into current signal.
Cavity portion split-phase of the pressure sensor 6 described in the utility model by way of welding with pressure sensor seat 12
Connection；Temperature sensor module and the temperature amplification module is used to compensate gas temperature on electronic circuit board 16.
Constant-current circuit described in the utility model, mu balanced circuit, which are connected on electronic circuit board 16, to be used to pass through operation amplifier
Device gives pressure sensor 6 one stable pumping signals.
Single-chip data acquisition module described in the utility model is on electronic circuit board 16, single-chip data acquisition module
Input connect with the output port of V/I modular converters and the output end of temperature amplification module.
Isolation module described in the utility model is on electronic circuit board 16, the input and one-chip computer module of isolation module
PORT COM connects, and the output end of isolation module connects with the input port of 485 communication modules.
485 communication module described in the utility model is on electronic circuit board 16, and the input of 485 communication modules is with isolating
The output end of module connects, and the output end of 485 communication modules connects with digital signal interface 14.
Immunity module described in the utility model is on electronic circuit board 16.The port of immunity module of the present invention
Connect with the port of V/I modular converters.
Sensor tetrafluoro shell 7 described in the utility model is connected by bonding way with the shell 8 of pointer density meter,
It is wrapped in the outside of pressure sensor 6.
Pinboard 10 described in the utility model is located at the top of pressure sensor tetrafluoro shell 7, is welded and fixed by contact pin,
The signal terminal of pressure sensor 6 is connected with the V/I modular converter inputs of electronic circuit board 16 by winding displacement.
Insulation board 13 described in the utility model is located between pressure sensor tetrafluoro shell 7 and the shell 8 of density meter, in electricity
The sub- lower section of wiring board 16, the shell 8 with pointer density meter by way of screw is fixed is connected.
Electronic circuit board 16 described in the utility model is located at the top of insulation board 13, by way of screw is fixed and pointer
The shell 8 of formula density meter is connected, and electronic circuit board 16 is connected by wire with data signal line interface 14.
Gas sampling air chamber 11 of the one end of connecting pipe 9 described in the utility model by way of welding with pointer density meter
It is connected, the other end is connected by way of welding with pressure sensor seat 12.
In the utility model housing built with pressure sensor 6, temperature sensor module, temperature amplification module, V/I are included
Modular converter, constant-current circuit, mu balanced circuit, one-chip computer module and 485 communication modules.Can either local pointer instruction, output report
Alert, locking contact, again can output digit signals, realize SF6The intellectuality of gas density.
The utility model is in the design comprising anti-jamming circuit on electronic circuit board, signal isolation design, insulation
Plate design, pressure sensor tetrafluoro shelling machine, improve the electromagnetic compatibility and antijamming capability of transmitter.
It is to be understood that specifically described above with respect to of the present utility model, be merely to illustrate the utility model and not
The technical scheme described by the utility model embodiment is limited to, it will be understood by those within the art that, still can be with
The utility model is modified or equivalent substitution, to reach identical technique effect；As long as satisfaction uses needs, all in this reality
Within new protection domain.
Claims (4)
1. a kind of digital output electromechanical integration SF of high reliability6Gas density transmitter, it is characterised in that connect including pressure
Mouthful（1）, bourdon tube（2）, kinematic link（3）, assigned in kinematic link（3）The travelling gear of end（4）, pointer（5）, pressure sensing
Device（6）, pressure sensor tetrafluoro shell（7）, shell of transducer（8）, connecting pipe（9）, sampling air chamber（11）, pressure sensor seat
（12）, insulation board（13）, digital signal interface（14）；Alarm and block signal interface（15）And electronic circuit board（16）；It is described
Pressure interface（1）With connecting pipe（9）Port respectively with sampling air chamber（11）Communicate；The bourdon tube（2）One end and sampling
Air chamber（11）Fixation is communicated, its other end and kinematic link（3）One end be fixedly connected；The kinematic link（3）The other end
Through travelling gear（4）With pointer（5）End gear engagement；The pressure sensor（6）It is placed in sensor holder（12）On；Institute
State pressure sensor tetrafluoro shell（7）It is placed in pressure sensor（6）It is outside；The pressure sensor pinboard（10）It is placed in pressure
Sensor tetrafluoro shell（7）Top, and and pressure sensor（6）And electronic circuit board（16）Signal input port connect；Institute
State insulation board（13）Positioned at pressure sensor tetrafluoro shell（7）Bottom external and shell of transducer（8）Between；Described electric wire
Road plate（16）Positioned at insulation board（13）Top, and and shell of transducer（8）It is fixedly connected；The electronic circuit board（16）Letter
Number transmission port and digital signal interface（14）Connect.
2. the digital output electromechanical integration SF of high reliability according to claim 16Gas density transmitter, its feature
It is：The electronic circuit board（16）Including power module, excitation module, V/I modular converters, amplifier, temperature sensor mould
Block and temperature signal amplification module；The excitation module port of the excitation termination electronic circuit board of the pressure sensor；The pressure
Force snesor（6）Output termination V/I modular converters and amplifier port；The pressure sensor（6）By pressure interface
（1）The pressure conversion of under test gas is voltage signal, then transmits to V/I modular converters and be converted into current signal；The excited modes
Block is through amplifier to pressure sensor（6）Stable pumping signal；The temperature sensor module is by pressure interface（1）Gas to be measured
The temperature transition of body is electric signal, and voltage signal is converted into by temperature signal amplification module.
3. the digital output electromechanical integration SF of high reliability according to claim 26Gas density transmitter, its feature
It is：The electronic circuit board（16）Also include single-chip data acquisition module and 485 communication modules；The single-chip data is adopted
Collect port of the module respectively with temperature signal amplification module, V/I modular converters and amplifier to connect；The single-chip data is adopted
Collection module communication interface connects with 485 communication module ports.
4. the digital output electromechanical integration SF6 gas density is transmitter of high reliability according to claim 3, its feature
It is：The pressure sensor seat（12）Bottom be provided with aperture, the connecting pipe（9）Through the aperture and pressure sensor
（6）Cavity communicate；The electronic circuit board (16) also includes immunity module and isolation module；The end of the immunity module
Mouth connects with the port of V/I modular converters；The isolation module input port and the PORT COM of single-chip data acquisition module
Connect；The isolation module output port connects with 485 communication module ports.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621413073.4U CN206497002U (en) | 2016-12-22 | 2016-12-22 | The digital output electromechanical integration SF of high reliability6Gas density transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621413073.4U CN206497002U (en) | 2016-12-22 | 2016-12-22 | The digital output electromechanical integration SF of high reliability6Gas density transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206497002U true CN206497002U (en) | 2017-09-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621413073.4U Active CN206497002U (en) | 2016-12-22 | 2016-12-22 | The digital output electromechanical integration SF of high reliability6Gas density transmitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206497002U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110567840A (en) * | 2019-09-04 | 2019-12-13 | 上海乐研电气有限公司 | Overvoltage-resistant gas density transmitter and monitoring system |
-
2016
- 2016-12-22 CN CN201621413073.4U patent/CN206497002U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110567840A (en) * | 2019-09-04 | 2019-12-13 | 上海乐研电气有限公司 | Overvoltage-resistant gas density transmitter and monitoring system |
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