CN207908668U - Calibrating installation for sulfur hexafluoride density relay tester - Google Patents
Calibrating installation for sulfur hexafluoride density relay tester Download PDFInfo
- Publication number
- CN207908668U CN207908668U CN201820434668.0U CN201820434668U CN207908668U CN 207908668 U CN207908668 U CN 207908668U CN 201820434668 U CN201820434668 U CN 201820434668U CN 207908668 U CN207908668 U CN 207908668U
- Authority
- CN
- China
- Prior art keywords
- gas cylinder
- gas
- pressure
- controller
- valve
- 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.)
- Active
Links
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model discloses a kind of calibrating installations for sulfur hexafluoride density relay tester, and it includes controller, touch display screen, temperature sensor and density monitor calibration equipments to be verified；It also include the loading line being connected to the inflating port of density monitor calibration equipment to be verified；Work gas cylinder, filter, gas flowmeter and gas flow have been sequentially connected in series on the loading line；It is additionally provided with pressure sensor on the loading line, the micro-valve for adjusting gas flow in gas flow is installed on the gas flow；The micro-valve, work gas cylinder, pressure sensor are also connected to controller by circuit；Work gas cylinder is connected with external gas cylinder, and the capacity of gas cylinder is more than the capacity of work gas cylinder；It is provided with aeration valve and booster pump on pipeline between gas cylinder and work gas cylinder.
Description
Technical field
The utility model is related to a kind of calibrating installation in sulfur hexafluoride relay field, be specifically used for sulfur hexafluoride density after
The calibrating of electric appliance tester verifies.
Background technology
Sulfur hexafluoride (hereinafter referred to as sulfur hexafluoride) gas instead insulating oil is widely used in various high voltage electric equipments
As the arc extinguishing and dielectric in high voltage electric equipment.Sulfur hexafluoride gas density controller (sulfur hexafluoride gas density after
Electric appliance) it is measurement instrument for being monitored to the sulfur hexafluoride gas density in high voltage electric equipment, whether it accurate
It plays an important role for the safe operation of high voltage electric equipment；State General Administration for Quality Supervision is sent out on March 28th, 2012
Cloth implements JJG1073-2011《Pressure type sulfur hexafluoride gas density controller》National metrological verification regulations, and sulfur hexafluoride
Gas density controller tester is then the application specific standard device commonly used to be examined and determine sulfur hexafluoride gas density controller,
It is not only able to accurately control and shows pressure, and can show and store pressure value when contact switch action, moreover it is possible to
Enough temperature characterisitics according to sulfur hexafluoride gas carry out temperature-compensating or conversion to shown pressure magnitude.In recent years, the school
It tests the manufacturing firm of instrument and uses unit more and more, but due to not corresponding measurement and calibration specification, various regions measurement technology
The calibration of mechanism is different on standard, environment and calibration method, is badly in need of carrying out specification.
In general, high-precision calibration equipment is selected to may be implemented the calibrating and measuring to other testers, but special
Calibrating installation can targetedly design gas circuit, degree of regulation and air source, and the verification environment of more standard may be implemented, therefore,
The calibrating installation for sulfur hexafluoride density relay tester specially designed will be helpful to sulfur hexafluoride density relay school
Test the unified measurement calibrating of instrument.
Utility model content
The technical problem to be solved by the utility model is to the deficiencies in for the above-mentioned prior art, disclose a kind of use
In the calibrating installation of sulfur hexafluoride density relay tester, the inspection of sulfur hexafluoride density relay tester can be carried out
It is fixed, have the adjustable structure of gas pressure, accuracy of detection can be promoted, reasonable integral structure is reliable, and being advantageously implemented stabilization can
The standard verification leaned on.
Technical solution adopted by the utility model to solve its technical problems is：It is verified for sulfur hexafluoride density relay
The calibrating installation of instrument, including controller, controller is connected with touch display screen, temperature sensor and density monitor to be verified
Calibration equipment；
The density monitor calibration equipment is the equipment for verifying sulfur hexafluoride density relay：The density relay
Device calibration equipment includes inflating port and signal wire interface；The controller and the density monitor calibration equipment to be verified
Signal wire interface connects；
It also include the loading line being connected to the inflating port of density monitor calibration equipment to be verified；The loading line
On be sequentially connected in series work gas cylinder, filter, gas flowmeter and gas flow；Pressure biography is additionally provided on the loading line
Sensor is equipped with the micro-valve for adjusting gas flow in gas flow on the gas flow；The micro-valve, work gas cylinder,
Pressure sensor is also connected to controller by circuit；The controller is also associated with memory and power supply；
The gas flow signals output end and controller of gas flowmeter for acquiring the gas flow on loading line
Gas flow signals input terminal be connected；The flow control command signal output end of controller and the flow control instruction of micro-valve are believed
Number input terminal is connected；The gas pressure signal output end of pressure sensor is connected with the supply gas pressure signal input part of controller；
The work gas cylinder is connected with external gas cylinder, and the capacity of gas cylinder is more than the capacity of work gas cylinder；
It is provided with aeration valve and booster pump on pipeline between gas cylinder and work gas cylinder.
A kind of preferred embodiment as the utility model：The micro-valve of the area of passage for changing gas flow
It is embedded to be mounted in gas flow.
A kind of preferred embodiment as the utility model：One end of the work gas cylinder and a three-way magnetic valve connects
It connects, the other both ends of three-way magnetic valve are connect with pressure regulation gas cylinder and intermediate gas cylinder respectively；Three-way magnetic valve and an electric impulse signal
Source connects, and makes intermediate gas cylinder alternate conduction between work gas cylinder and pressure regulation gas cylinder under the driving in the electric impulse signal source.
A kind of preferred embodiment as the utility model：The capacity of the intermediate gas cylinder is less than work gas cylinder and pressure regulation
The capacity of gas cylinder.
A kind of preferred embodiment as the utility model：The pressure measurement range of the pressure sensor is：0~
1.1MPa；Resolution ratio≤0.00002MPa of the pressure sensor.
A kind of preferred embodiment as the utility model：The work gas cylinder and gas cylinder are tempering gas bomb；
The air pressure range of the work gas cylinder is 0.9~1.1Mpa；The pressure sensor is resistance strain gage pressure sensor；It is described
Aeration valve is electrically operated valve.
A kind of preferred embodiment as the utility model：It also include shell；The shell includes hinged by hinge
The upper cover and working plate of connection；The both sides of the upper cover are equipped with handle；It is provided with master switch on the upper lid；The upper cover is also
It is provided with the RS232 interface for being communicated with external computer, RS232 interface is electrically connected with the controller；The upper cover setting
There is lug boss, the one side of the lug boss towards user are inclined surface, and the touch display screen setting is in the inclined plane；It is described
Operation bench is arranged in the lower section of touch display screen, and thermal printer is provided on operation bench；It is additionally provided on the upper lid of the shell
Temperature sensor interface, air inlet and exhaust outlet；The controller is by the data communication interface that is arranged on upper lid and waits for school
Control connection is realized after the signal wire interface connection for the density monitor calibration equipment tested.
The utility model has the following advantages compared with prior art：
Calibrating installation disclosed by the utility model for sulfur hexafluoride density relay tester, specifically, this practicality
Novel controller can carry out accurate intelligentized control method in entire calibration process, additionally it is possible to carry out reliable data transmission；
Density monitor calibration equipment to be verified generally comprises the mounting bracket for connecting sulfur hexafluoride density relay, and inflation
Mouth and data transmission interface；The data transmission communication interface of controller and the density monitor calibration equipment to be verified connects
It connects；It is capable of the data of instantaneous acquiring sulfur hexafluoride density relay calibration equipment, inflation rate is (by being integrated in controller
Timer and rate acquire sensor measurement)；Convenient for fully understanding the parameter of density monitor calibration equipment；
The utility model has been sequentially connected in series the gentle body runner of work gas cylinder on loading line；Micro-valve tune on gas flow
The cross section size of throttle body runner, to realize gas pressure flow velocity reliable adjustment；Pressure and flow velocity pass through pressure respectively
Force snesor and gas flow meter feeds back to controller, realizes that closed loop accurately controls；The utility model gas cylinder sets for outside
It is standby, the volume of internal work gas cylinder can be greatly reduced so that host is lighter and handier, remove move it is more convenient；
The controller of the utility model is also associated with memory；Memory can reliably store the ginseng of entire calibration process
Number reads convenient for long-range, final comparison and data conversion storage.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of the overlook direction of specific implementation mode of the utility model；
Fig. 2 is a kind of structural schematic diagram in the main view direction of specific implementation mode of the utility model；
Fig. 3 is a kind of structure diagram of specific implementation mode of the utility model；
Fig. 4 is a kind of structure diagram of specific implementation mode of the work gas cylinder stabipack of the utility model.
Reference sign：
100- upper covers, 200- operation bench, 400- handles, 500- master switch, 600- touch display screens, 700-RS232 interfaces,
800- air-path interfaces, 900- data communication interfaces；301- temperature sensor interfaces, 302- air inlets, 303- exhaust outlets；
1- gas cylinders, 2- work gas cylinders, 3- filters, 4- aeration valves, 5- memories, 6- controllers, 7- power supplys, 8- increase
Press pump, 9- pressure sensors, 10- density monitor calibration equipments, 11- thermal printers, 12- touch display screens, 13- temperature pass
Sensor, 14- working plates, 15- gas flowmeters, 16- micro-valves, 17- gas flows, 18- pressure regulation gas cylinders, the centres 19- gas cylinder, 20-
Three-way magnetic valve.
Specific implementation mode
The utility model is described in detail in each embodiment shown in below in conjunction with the accompanying drawings, but it should explanation,
These embodiments are not limitation of the utility model, and those of ordinary skill in the art are according to work(made by these embodiments
Energy, method or the equivalent transformation in structure or replacement, belong within the scope of protection of the utility model.
As shown in figures 1-4, it illustrates specific embodiment of the utility model；As shown, disclosed by the utility model
For the calibrating installation of sulfur hexafluoride density relay tester, including controller 6, controller is connected with touch display screen
(600,12), temperature sensor 13 and density monitor calibration equipment 10 to be verified；
The density monitor calibration equipment is the equipment for verifying sulfur hexafluoride density relay；The density relay
Device calibration equipment includes inflating port and signal wire interface；The controller and the density monitor calibration equipment to be verified
Signal wire interface connects；
It also include the loading line being connected to the inflating port of density monitor calibration equipment to be verified；The loading line
On be sequentially connected in series work gas cylinder 2, filter 3, gas flowmeter 15 and gas flow 17；It is additionally provided on the loading line
Pressure sensor 9 is equipped with the micro-valve 16 for adjusting gas flow in gas flow on the gas flow；The micro-valve,
Work gas cylinder, pressure sensor are also connected to controller by circuit；The controller is also associated with memory 5 and power supply 7；
The gas flow signals output end and controller of gas flowmeter for acquiring the gas flow on loading line
Gas flow signals input terminal be connected；The flow control command signal output end of controller and the flow control instruction of micro-valve are believed
Number input terminal is connected；The gas pressure signal output end of pressure sensor is connected with the supply gas pressure signal input part of controller；
The work gas cylinder is connected with external gas cylinder 1, and the capacity of gas cylinder is more than the capacity of work gas cylinder；
It is provided with aeration valve 4 and booster pump 8 on pipeline between gas cylinder and work gas cylinder.Aeration valve is used to mend for work gas cylinder
Gas；In order to avoid the excessively high promotion caused to equipment requirement of the air pressure in gas cylinder, booster pump can allow in gas cylinder
The gas pressure come is promoted, thus, which the pressure bearing requirements to gas cylinder itself reduce, helps to reduce cost.
Preferably, as shown in Figure 3：The insertion of micro-valve 16 of the area of passage for changing gas flow is mounted on gas
In runner.It is real by driving power input voltage using displacement bimorph actuator as executive component by taking Piezoelectric Driving micro-valve as an example
Existing displacement bimorph actuator stretches, and displacement bimorph actuator squeezes PDMS film, its is made to generate flexible deformation, changes gas stream
The area of passage in road adjusts gas pressure and flow.
Micro-valve structure and working principle is mainly made of 2 layers of PDMS pieces：Upper layer PDMS pieces and lower layer's PDMS pieces.Upper layer PDMS
Piece does not include micro-structure, is mainly used as cover plate, after the sealing of lower layer PDMS pieces, forms the micro-valve device with airtight passage.Under
Layer PDMS pieces are the functional layer of micro-valve, are integrated with the micro-structures such as valve block, valve plug, microchannel.Its middle valve plate one end is perpendicularly fixed at
The inner wall of fluid channel (400m wide, 200m high)；And valve plug is located at the left side of valve block, both ends are then all fixed in the side of microchannel
On wall, valve plug channel (width 80p.m, length 500Ixm) intermediate then that valve block center is right against by one separates.Micro-valve valve block with
There are small clearance channel between valve plug, it is mainly used for adjusting flow.
Preferably, as shown in Figure 4：The work gas cylinder is connect with one end of a three-way magnetic valve 20, three-way magnetic valve
Other both ends connect respectively with pressure regulation gas cylinder 18 and intermediate gas cylinder 19；Three-way magnetic valve is connect with an electric impulse signal source, and
Make intermediate gas cylinder alternate conduction between work gas cylinder and pressure regulation gas cylinder under the driving in the electric impulse signal source.The present embodiment is real
The stability contorting to the pressure in work gas cylinder is showed, pressure can be allowed gradually to be decreased to the pressure required by test pressure
Value；Since the capacity of intermediate gas cylinder is limited, three-way magnetic valve can drop hypobaric amplitude in each conducting and greatly reduce,
Three-way magnetic valve controls in the case that electric pulse is same duty cycle, and the present embodiment can allow the air pressure change amplitude of work gas cylinder
More small, adherence pressure controls stability and precision；Specifically, the logical external environment, that is, pressure regulation gas cylinder in three-way magnetic valve one end, one
The work gas cylinder of termination test system, the intermediate gas cylinder of a termination, when three-way magnetic valve connects work gas cylinder with intermediate gas cylinder,
The air pressure of work gas cylinder reduces, and the air pressure of intermediate gas cylinder increases；If intermediate gas cylinder and pressure regulation gas cylinder communicate, the air pressure of intermediate gas cylinder
It is reduced to pressure regulation gas cylinder, after repetitive operation so that the pressure for the gas cylinder that works reaches desired pressure value.
Preferably, as shown in Figure 4：The capacity of the intermediate gas cylinder is less than the capacity of work gas cylinder and pressure regulation gas cylinder.It is intermediate
The volume of gas cylinder is smaller, and the pressure change for the gas cylinder that works is smaller.
Preferably, as shown in the figure：The pressure measurement range of the pressure sensor is：0~1.1MPa；The pressure sensing
Resolution ratio≤0.00002MPa of device.In preferred embodiments of the present invention, the pressure measurement model of the pressure sensor
Enclose for：0~1.1MPa；Resolution ratio≤0.00002MPa of the pressure sensor.Thus, which the pressure of the utility model is surveyed
Amount range can ensure that the gamut that field is verified in density monitor measures, and the precision of pressure sensor is but also this practicality is new
The Pressure Sensor Precision of type is higher than the precision of sulfur hexafluoride density relay calibration equipment in the prior art, fully meets school
Alignment request.
Preferably, as shown in the figure：The work gas cylinder and gas cylinder are tempering gas bomb；The air pressure of the work gas cylinder
Ranging from 0.9~1.1Mpa；The pressure sensor is resistance strain gage pressure sensor；The aeration valve is electrically operated valve.
Preferably, as shown in the figure：It also include shell；The shell includes the upper cover being articulated and connected by hinge and working plate
14；The both sides of the upper cover are equipped with handle 400；It is provided with master switch 500 on the upper lid；The upper cover, which is additionally provided with, to be used for
With the RS232 interface 700 of external computer communication, RS232 interface is electrically connected with the controller；The upper cover is provided with protrusion
The one side in portion, the lug boss towards user is inclined surface, and the touch display screen setting is in the inclined plane；Described touch shows
Operation bench 200 is arranged in the lower section of display screen, and thermal printer 11 is provided on operation bench；It is additionally provided with temperature on the upper lid of the shell
Spend sensor interface 301, air inlet 302 and exhaust outlet 303；The controller is by being arranged the data communication interface on upper lid
900 connect with the signal wire interface of density monitor calibration equipment to be verified after realize control connection.
Tool of the series of detailed descriptions listed above only for the feasible embodiment of the utility model
Body illustrates that they are all without departing from made by the utility model skill spirit not to limit the scope of protection of the utility model
Equivalent implementations or change should be included within the scope of protection of this utility model.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiment being appreciated that.
Claims (7)
1. the calibrating installation for sulfur hexafluoride density relay tester, it is characterised in that：Including controller, controller connection
There are touch display screen, temperature sensor and density monitor calibration equipment to be verified；
The density monitor calibration equipment is the equipment for verifying sulfur hexafluoride density relay；The density monitor school
It includes inflating port and signal wire interface to test equipment；The signal of the controller and the density monitor calibration equipment to be verified
Line interface connects；
It also include the loading line being connected to the inflating port of density monitor calibration equipment to be verified；On the loading line according to
It is secondary to be serially connected with work gas cylinder, filter, gas flowmeter and gas flow；It is additionally provided with pressure sensing on the loading line
Device is equipped with the micro-valve for adjusting gas flow in gas flow on the gas flow；The micro-valve, work gas cylinder, pressure
Force snesor is also connected to controller by circuit；The controller is also associated with memory and power supply；
The gas of the gas flow signals output end and controller of gas flowmeter for acquiring the gas flow on loading line
Body flow signal input terminal is connected；The flow control command signal output end of controller and the flow control command signal of micro-valve are defeated
Enter end to be connected；The gas pressure signal output end of pressure sensor is connected with the supply gas pressure signal input part of controller；
The work gas cylinder is connected with external gas cylinder, and the capacity of gas cylinder is more than the capacity of work gas cylinder；High pressure
It is provided with aeration valve and booster pump on pipeline between gas cylinder and work gas cylinder.
2. being used for the calibrating installation of sulfur hexafluoride density relay tester as described in claim 1, it is characterised in that：It is described
Micro-valve insertion for changing the area of passage of gas flow is mounted in gas flow.
3. being used for the calibrating installation of sulfur hexafluoride density relay tester as described in claim 1, it is characterised in that：It is described
Work gas cylinder is connect with one end of a three-way magnetic valve, the other both ends of three-way magnetic valve respectively with pressure regulation gas cylinder and centre gas
Bottle connection；Three-way magnetic valve is connect with an electric impulse signal source, and so that intermediate gas cylinder is existed under the driving in the electric impulse signal source
Work alternate conduction between gas cylinder and pressure regulation gas cylinder.
4. being used for the calibrating installation of sulfur hexafluoride density relay tester as claimed in claim 3, it is characterised in that：It is described
The capacity of intermediate gas cylinder is less than the capacity of work gas cylinder and pressure regulation gas cylinder.
5. being used for the calibrating installation of sulfur hexafluoride density relay tester as described in claim 1, it is characterised in that：It is described
The pressure measurement range of pressure sensor is：0~1.1MPa；Resolution ratio≤0.00002MPa of the pressure sensor.
6. being used for the calibrating installation of sulfur hexafluoride density relay tester as described in claim 1, it is characterised in that：It is described
Work gas cylinder and gas cylinder are tempering gas bomb；The air pressure range of the work gas cylinder is 0.9~1.1Mpa；The pressure passes
Sensor is resistance strain gage pressure sensor；The aeration valve is electrically operated valve.
7. being used for the calibrating installation of sulfur hexafluoride density relay tester as described in claim 1, it is characterised in that：Also wrap
Containing shell；The shell includes the upper cover being articulated and connected by hinge and working plate；The both sides of the upper cover are equipped with handle；Institute
It states and is provided with master switch on lid；The upper cover is additionally provided with the RS232 interface for being communicated with external computer, RS232 interface
It is electrically connected with the controller；The upper cover is provided with lug boss, and the one side of the lug boss towards user are inclined surface, described
Touch display screen is arranged in the inclined plane；Operation bench is arranged in the lower section of the touch display screen, and temperature-sensitive is provided on operation bench
Printer；It is additionally provided with temperature sensor interface, air inlet and exhaust outlet on the upper lid of the shell；The controller is by setting
It sets and realizes control after the data communication interface on upper lid is connect with the signal wire interface of density monitor calibration equipment to be verified
System connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820434668.0U CN207908668U (en) | 2018-03-19 | 2018-03-19 | Calibrating installation for sulfur hexafluoride density relay tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820434668.0U CN207908668U (en) | 2018-03-19 | 2018-03-19 | Calibrating installation for sulfur hexafluoride density relay tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207908668U true CN207908668U (en) | 2018-09-25 |
Family
ID=63559638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820434668.0U Active CN207908668U (en) | 2018-03-19 | 2018-03-19 | Calibrating installation for sulfur hexafluoride density relay tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207908668U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111781094A (en) * | 2020-08-18 | 2020-10-16 | 云南电网有限责任公司德宏供电局 | Automatic density relay calibration system |
-
2018
- 2018-03-19 CN CN201820434668.0U patent/CN207908668U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111781094A (en) * | 2020-08-18 | 2020-10-16 | 云南电网有限责任公司德宏供电局 | Automatic density relay calibration system |
| CN111781094B (en) * | 2020-08-18 | 2022-12-30 | 云南电网有限责任公司德宏供电局 | Automatic sulfur hexafluoride density relay calibration system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104215290B (en) | Differential pressure type volume measurement method | |
| EP0861423A1 (en) | System for measuring a gas mass flow | |
| CN104655367A (en) | Manifold assembly for portable leak tester | |
| CN203837782U (en) | Diaphragm gas meter metering performance isothermal calibrating apparatus under conditions of limiting temperature | |
| CN103837215B (en) | Commutation valve type p.V.T.t method gas flow meter | |
| CN106769667B (en) | Nanoscale gas flow rule experiment system and method | |
| CN111237485B (en) | Valve for monitoring gas flow in real time and valve flow measuring method | |
| CN100585359C (en) | Gas pressure regulator test device | |
| CN105116363A (en) | Calibrating device for SF6 density relay checking instrument | |
| CN208833887U (en) | A kind of multrirange sulfur hexafluoride density relay tester | |
| CN207908668U (en) | Calibrating installation for sulfur hexafluoride density relay tester | |
| CN213579975U (en) | Fuel cell system air tightness testing device | |
| CN111543969A (en) | Calibrating device of blood pressure measuring equipment | |
| CN204043747U (en) | Differential pressure type device for measuring volume | |
| CN102879037B (en) | Verifying device for gas drainage comprehensive parameter tester | |
| CN107368629A (en) | A kind of pressure-reducing valve solid liquid interation parameter identification method | |
| CN208805264U (en) | Electronics soap-film flow automatic calibrator | |
| CN216669176U (en) | Portable air tightness detector | |
| CN215811476U (en) | Flow type air tightness testing device | |
| CN109470432B (en) | Tightness detector and application method thereof | |
| CN209470800U (en) | A kind of pressure transmitter configurations | |
| JP2005077310A (en) | Gas measuring device and self-diagnosis method therefor | |
| CN102749180A (en) | On-line leak rate detection device for stop valve | |
| CN215893936U (en) | Slide valve performance testing device | |
| CN214843611U (en) | Pneumatic silencer noise testing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |