CN208833887U - A kind of multrirange sulfur hexafluoride density relay tester - Google Patents
A kind of multrirange sulfur hexafluoride density relay tester Download PDFInfo
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- CN208833887U CN208833887U CN201821320557.3U CN201821320557U CN208833887U CN 208833887 U CN208833887 U CN 208833887U CN 201821320557 U CN201821320557 U CN 201821320557U CN 208833887 U CN208833887 U CN 208833887U
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- pressure
- verification
- sulfur hexafluoride
- pressure sensor
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Abstract
The utility model discloses a kind of multrirange sulfur hexafluoride density relay testers.The utility model includes verification shell and is mounted on the controller verified in shell, and controller connects density monitor to be verified and verification temperature sensor；Also include loading line, is sequentially connected in series air reservoir, cylinder pressure sensors and proportioning valve on the loading line；Normal pressure component and the pressure regulation cylinder for finely tuning air pressure are also set up on the loading line；The normal pressure component includes the verification pressure sensor of two different ranges, the respectively first verification pressure sensor and the second verification pressure sensor；Each verification pressure sensor passes through a solenoid valve respectively and is connected to loading line；The solenoid valve is connect with controller.The utility model verifies the sulfur hexafluoride density relay of different ranges by the verification pressure sensor of different ranges, is also equipped with the function that can recycle sulfur hexafluoride gas.
Description
Technical field
The utility model relates to the calibration equipment of sulfur hexafluoride density relay, specifically a kind of multrirange is lithium
Sulphur density relay checking instrument.
Background technique
SF6(sulfur hexafluoride) electric product has been widely used in power department, industrial and mining enterprises, promote the fast of power industry
Speed development.How to guarantee that the reliable and secure operation of SF6 electric product has become one of vital task of power department.SF6 gas
Density monitor is one of the key element of SF6 electric switch, it is used to detect SF6 gas density is in SF6 electrical equipment ontology
Variation, its performance quality directly influences the reliable and secure operation of SF6 electrical equipment.The SF6 gas of installation on site is close
Relay is spent because infrequently acting, and after one period the phenomenon that often appearance movement not flexible or poor contact of contacts, is had
It there is also temperature-compensating performance variation, SF6 gas density is relay misoperation be easy to cause to make when variation of ambient temperature.Therefore
Periodically SF6 gas density is relay should be verified.From the point of view of practical operation situation, to the SF6 gas density is relay at scene
It is to prevent trouble before it happens that device, which carries out periodic check, ensures one of the necessary means of power equipment safety reliability service.In sealing container
In, the SF6 gas pressure under certain temperature can represent SF6 gas density is.In order to unified, traditionally often SF6 at 20 DEG C
Typical value of the pressure of gas as its corresponding density.So SF6 gas density is relay is with the pressure of SF6 gas at 20 DEG C
Power is as nominal value.
A standard pressure transducer is only arranged (for providing standard ginseng in current sulfur hexafluoride density relay tester
Examine value), with the promotion that user requires checking precision, the resolution ratio of standard pressure transducer is also constantly being promoted, still
In current density monitor, the air pressure model of density monitor (or the density meter) of different indicating ranges (range) its checking procedure
It encloses widely different, if only being measured with standard pressure transducer, then the situation for causing precision not high, and is all at present
The precision of tester is constantly promoted by increasing the precision of standard pressure transducer, standard pressure transducer reaches classic
It is difficult to be promoted after precision, and chooses excessively high-precision standard pressure transducer and cause cost sharp increase.
Utility model content
The technical problem to be solved by the utility model is in view of the deficiency of the prior art, it is more provide one kind
Range sulfur hexafluoride density relay tester verifies the six of different ranges by the verification pressure sensor of different ranges
Sulfur fluoride density monitor；The utility model can also recycle sulfur hexafluoride gas.
For this purpose, the technical scheme adopted by the utility model to solve the technical problem is as follows: a kind of multrirange sulfur hexafluoride is close
Relay checking instrument is spent, comprising verification shell and the controller being mounted in verification shell, the controller connection touches aobvious
Display screen, density monitor to be verified, thermal printer and verification temperature sensor；
Also include loading line, is sequentially connected in series air reservoir, cylinder pressure sensors and proportioning valve, institute on the loading line
It states and also sets up normal pressure component and the pressure regulation cylinder for finely tuning air pressure on loading line；The normal pressure component includes two
The verification pressure sensor of a difference range, the respectively first verification pressure sensor and the second verification pressure sensor；Each
Verification pressure sensor passes through a solenoid valve respectively and is connected to loading line；The solenoid valve is connect with controller；
The gas outlet of the air reservoir connects the cylinder pressure sensors, and the air inlet of air reservoir passes through piping connection temperature
Spend sensor, air compressor machine and filter；Setting is for the gas supply for air reservoir gas supply on the corresponding verification shell of filters locations
The connection air-path interface of gas cylinder；
Setting is for the gas supply branch for density monitor to be verified gas supply, the gas supply branch road on the loading line
Intake valve and density monitor to be verified are installed；Gas supply branch is also connected with exhaust apparatus；The exhaust apparatus includes exhaust valve；Institute
It states exhaust valve and recycling gas cylinder passes through piping connection；The pressure of the recycling gas cylinder is lower than the pressure on the pipeline of exhaust valve, institute
State the pressure for being greater than air reservoir for the pressure of gas bottle.
A kind of preferred embodiment as the utility model: the range ability of the first verification pressure sensor is 0-
1 megapascal；The range ability of the second verification pressure sensor is 0-0.2 megapascal.
A kind of preferred embodiment as the utility model: resolution ratio≤0.00002MPa of pressure sensor is verified.
A kind of preferred embodiment as the utility model: the controller includes to pass for automatically controlled switching first pressure
The valve transfer circuit of solenoid valve either on or off on sensor and second pressure sensor.
A kind of preferred embodiment as the utility model: it is also set up on the pipeline between the air reservoir and air compressor machine
Vacuum pump；The density monitor to be verified includes inflating port and signal wire interface；The controller and the signal wire interface
Electrical connection is realized after connection.
A kind of preferred embodiment as the utility model: it is arranged on the verification shell for installing density to be verified
The checking joint of relay, the checking joint include U-shaped folder plate, and U-shaped folder plate includes upper clamp plate and lower clamp plate, are pacified on lower clamp plate
For assembling the mounting head of gas supply branch and density monitor gas path joint to be verified, mounting head bottom is located under lower clamp plate dress
Side, top edge are arranged flange, pressure spring are arranged between flange and lower clamp plate；Opened up on upper clamp plate for across density to be verified after
The via hole of the gas path joint of electric appliance, U-shaped folder plate two sides are symmetrical arranged two bolts, are tightened and loosened so that U by bolt
Extended distance between the upper clamp plate and lower clamp plate of type clamping plate reduces and increases.
A kind of preferred embodiment as the utility model: the open-topped internal installation clamping of the mounting head
Mouthful, clamp port is tightening for the bolt being set with outside comprising the identical insert of four structures, the distance between insert by clamp port
It is adjusted with loosening.
A kind of preferred embodiment as the utility model: the controller is also connected with touch display screen.
A kind of preferred embodiment as the utility model: the controller is also connected with thermal printer.
Compared with the prior art, the utility model has the following advantages:
A kind of multrirange sulfur hexafluoride density relay tester of the utility model, increases pressure regulation cylinder, Ke Yijin
The pressure on one step solar term road promotes precision, and proportioning valve is used for air pressure coarse adjustment, and pressure regulation cylinder is used for air pressure accurate adjustment；The standard
Pressure assembly includes the verification pressure sensor of two different ranges, the respectively first verification pressure sensor and the second verification pressure
Force snesor；Each verification pressure sensor passes through a solenoid valve respectively and is connected to loading line；The solenoid valve and control
Device connection；Originally verification pressure sensor all the way devises two-way in the present invention, and can pass through solenoid valve respectively
Control.
The recycling gas cylinder of the utility model recycles sulfur hexafluoride gas, verifies gas by providing sulfur hexafluoride for gas bottle
Body designs the smooth quick of the smooth high speed and gas recovery for realizing gas supply by pressure difference；The temperature sensing of the utility model
The setting of device, air compressor machine, filter and cylinder pressure sensors is so that the gas supply of air reservoir part is examined by a series of pressure
It surveys, temperature detection, time timer etc. makes air compressor machine work, and fast aeration to air reservoir provides required pressure.
Detailed description of the invention
Fig. 1 is a kind of structural block diagram of specific embodiment of the utility model；
Fig. 2 is the structural schematic diagram in a kind of main view direction of specific embodiment of the checking joint of the utility model；
Fig. 3 is a kind of structural schematic diagram of the overlook direction of specific embodiment of the checking joint of the utility model.
Description of symbols:
1- verifies shell, 2- pressure regulation cylinder, 3- cylinder pressure sensors, 4- air reservoir, 5- temperature sensor, 6- pneumatics
Machine, 7- verify pressure sensor for gas bottle, 8- filter, 9- first, and 10- proportioning valve, 11- controller, 12-, which is touched, to be shown
Screen, 13- verify temperature sensor, 14- exhaust valve, and 15- recycles gas cylinder, 16- density monitor to be verified, 17- intake valve, 18-
Second solenoid valve, the first solenoid valve of 19-, 20- second verify pressure sensor, 21- thermal printer；
201- pressure spring, 202- flange, 203- clamp port, 204- via hole, 205- lower clamp plate, 206- upper clamp plate, 207- bolt,
208-U type clamping plate；The first insert of 231-, the second insert of 232-, 233- third insert, the 4th insert of 234-.
Specific embodiment
The utility model is described in detail in each embodiment shown in reference to the accompanying drawing, but it should be stated that,
These embodiments are not limitation of the utility model, those of ordinary skill in the art according to these embodiments made by function
Energy, method or equivalent transformation or substitution in structure, belong within the protection scope of the utility model.
As shown in Figure 1-3, it illustrates specific embodiment of the utility model；As shown, one kind of the utility model
Multrirange sulfur hexafluoride density relay tester includes verification shell 1 and the controller 11 being mounted in verification shell, control
Device connects touch display screen 12, density monitor to be verified 16, thermal printer 12 and verification temperature sensor 13；Also comprising filling
Air pipe has been sequentially connected in series air reservoir 4, cylinder pressure sensors 3 and proportioning valve 10 on the loading line；The loading line
On also set up normal pressure component and the pressure regulation cylinder 2 for finely tuning air pressure；The normal pressure component includes two not same amounts
The verification pressure sensor of journey, the respectively first verification pressure sensor 9 and the second verification pressure sensor 20；Each verification pressure
Force snesor passes through a solenoid valve respectively and is connected to loading line；Each verification pressure sensor passes through a solenoid valve respectively
(the first solenoid valve 19 and second solenoid valve 18) is connected to loading line；When actually going into operation, verifies and be arranged on the shell of component
The button of two corresponding control solenoid valves, the opening and closing of the first solenoid valve and second solenoid valve are controlled by button, thus
The manual switching for realizing different range measurements, it is of course also possible to select the solenoid valve switching circuit in following preferred embodiments
To control.The solenoid valve is connect with controller 11；Pressure regulation cylinder, which can be, to be manually adjusted, and is also possible to automatically controlled adjusting, manually
Adjusting is to realize piston moving forward and backward (in such as Chinese patent 022608907 in cylinder block by the rotation of handwheel
" air pressure adjustment is rigid "), motorized adjustment is to be moved forward and backward by motor control piston rod cylinder is intracorporal.
The gas outlet of the air reservoir 4 connects the cylinder pressure sensors 3, and the air inlet of air reservoir passes through piping connection
Temperature sensor 5, air compressor machine 6 and filter 8；Setting for air reservoir for supplying on the corresponding verification shell 1 of filters locations
The connection air-path interface for gas bottle 7；Setting is for the confession for density monitor 16 to be verified gas supply on the loading line
Gas branch；The gas supply branch road is installed into air valve 17 and density monitor to be verified 16；Gas supply branch is additionally attached to exhaust dress
It sets；The exhaust apparatus includes exhaust valve 14；The exhaust valve 14 passes through piping connection with recycling gas cylinder 15；The recycling gas
The pressure of bottle is greater than the pressure of air reservoir 4 lower than the pressure on the pipeline of exhaust valve, the pressure for gas bottle 7；Gas is set
Pressure size relation is in order to which pressure difference is arranged, so that supplying and recycling more efficient.
The range ability of the first verification pressure sensor is 0-1 megapascal；The amount of the second verification pressure sensor
Journey range is 0-0.2 megapascal.
Preferably, resolution ratio≤0.00002MPa of pressure sensor is verified.
Preferably, the controller includes on automatically controlled switching first pressure sensor and second pressure sensor
The valve transfer circuit of solenoid valve either on or off.Valve transfer circuit can specifically be controlled using valve circuit in the prior art
Technology, the circuit control technology of especially existing gas circuit valve.
Preferably, vacuum pump is also set up on the pipeline between the air reservoir and air compressor machine；The density relay to be verified
Device includes inflating port and signal wire interface；The controller realizes electrical connection after connecting with the signal wire interface.Vacuum is set
Pumping can first vacuumize before initialization operation, allow entire pipeline and air reservoir etc. are internal thoroughly to empty；
Preferably, as shown in Figure 2,3: being arranged on the verification shell and connect for installing the verification of density monitor to be verified
Head, the checking joint include U-shaped folder plate 208, and U-shaped folder plate includes upper clamp plate 206 and lower clamp plate 205, install and use on lower clamp plate
In the mounting head of assembling gas supply branch and density monitor gas path joint to be verified, mounting head bottom is located at below lower clamp plate, top
Flange 202 is arranged in portion edge, and pressure spring 201 is arranged between flange and lower clamp plate；It is opened up on upper clamp plate for across density to be verified
The via hole 204 of the gas path joint of relay, U-shaped folder plate two sides are symmetrical arranged two bolts 207, and bolt, which is tightened and loosened, to be made
The extended distance between the upper clamp plate and lower clamp plate of U-shaped folder plate is obtained to reduce and increase.In order to realize checking joint to density relay
The quick fixation of the gas path joint of device, the present embodiment realize upper and lower compression by the structure of U-shaped folder plate, pass through following implementations
The insert of example realizes the compression of openings of sizes, and such fixation procedure is quick, and different specifications can also be applied.
Preferably, as shown in Figure 2,3: the open-topped internal installation clamp port 203 of the mounting head, clamp port is packet
Containing the identical insert of four structures (the first insert 231, the second insert 232, third insert 233, the 4th insert 234), insert it
Between distance tighten and loosen adjusting by the bolt that is set with outside clamp port.Since the design of insert is so that along radial direction
The adjusting of openings of sizes have possibility, simplest mode is exactly that four insert flares are located remotely from each other, and is led at this time
The screw thread engaging bolt threads of insert outer surface are crossed, bolt makes tubaeform opening shrink realization clamping；It is of course also possible to allow insert
In horizontal mode by spring forces towards grip block center movement, this elastic compression makes installation fixation more quick.
Tool of the series of detailed descriptions listed above only for the feasible embodiment of the utility model
Body explanation, they are all without departing from made by the utility model skill spirit not to limit the protection scope 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 embodiments being understood that.
Claims (9)
1. a kind of multrirange sulfur hexafluoride density relay tester includes verification shell and the control being mounted in verification shell
Device, it is characterised in that: controller connection touch display screen, density monitor to be verified, thermal printer and the verification temperature
Spend sensor；
Also include loading line, is sequentially connected in series air reservoir, cylinder pressure sensors and proportioning valve on the loading line, it is described to fill
Normal pressure component and the pressure regulation cylinder for finely tuning air pressure are also set up on air pipe；The normal pressure component include two not
With the verification pressure sensor of range, the respectively first verification pressure sensor and the second verification pressure sensor；Each verification
Pressure sensor passes through a solenoid valve respectively and is connected to loading line；The solenoid valve is connect with controller；
The gas outlet of the air reservoir connects the cylinder pressure sensors, and the air inlet of air reservoir is passed by piping connection temperature
Sensor, air compressor machine and filter；Setting is for being air reservoir gas supply for gas bottle on the corresponding verification shell of filters locations
Connection air-path interface；
Setting is installed for the gas supply branch for density monitor to be verified gas supply, the gas supply branch road on the loading line
Intake valve and density monitor to be verified；Gas supply branch is also connected with exhaust apparatus；The exhaust apparatus includes exhaust valve；The row
Air valve and recycling gas cylinder pass through piping connection；The pressure of the recycling gas cylinder is lower than the pressure on the pipeline of exhaust valve, the confession
The pressure of gas bottle is greater than the pressure of air reservoir.
2. multrirange sulfur hexafluoride density relay tester according to claim 1, which is characterized in that first school
The range ability for testing pressure sensor is 0-1 megapascal；The range ability of the second verification pressure sensor is 0-0.2 megapascal.
3. multrirange sulfur hexafluoride density relay tester according to claim 1 or 2, which is characterized in that verification pressure
Resolution ratio≤0.00002MPa of force snesor.
4. multrirange sulfur hexafluoride density relay tester according to claim 1 or 2, which is characterized in that the control
Device processed includes to cut for the automatically controlled valve for switching first pressure sensor and the solenoid valve either on or off on second pressure sensor
Change circuit.
5. multrirange sulfur hexafluoride density relay tester according to claim 1 or 2, which is characterized in that the storage
Vacuum pump is also set up on pipeline between cylinder and air compressor machine；The density monitor to be verified includes that inflating port and signal wire connect
Mouthful；The controller realizes electrical connection after connecting with the signal wire interface.
6. multrirange sulfur hexafluoride density relay tester according to claim 1 or 2, which is characterized in that the school
The checking joint being arranged for installing density monitor to be verified is tested on shell, and the checking joint includes U-shaped folder plate, U-shaped folder
Plate includes upper clamp plate and lower clamp plate, and installation supplies branch and density monitor gas path joint to be verified for assemble on lower clamp plate
Mounting head, mounting head bottom are located at below lower clamp plate, and flange is arranged in top edge, and pressure spring is arranged between flange and lower clamp plate；On
The via hole of the gas path joint for passing through density monitor to be verified is opened up on clamping plate, U-shaped folder plate two sides are symmetrical arranged two
A bolt is tightened by bolt and is loosened so that the extended distance between the upper clamp plate and lower clamp plate of U-shaped folder plate reduces and increases.
7. multrirange sulfur hexafluoride density relay tester according to claim 6, which is characterized in that the mounting head
It is open-topped it is internal clamp port is installed, clamp port is comprising the identical insert of four structures, and the distance between insert passes through
The bolt being set with outside clamp port is tightened and is loosened to adjust.
8. multrirange sulfur hexafluoride density relay tester according to claim 1 or 2, which is characterized in that described
Controller is also connected with touch display screen.
9. multrirange sulfur hexafluoride density relay tester according to claim 1 or 2, which is characterized in that described
Controller is also connected with thermal printer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821320557.3U CN208833887U (en) | 2018-08-15 | 2018-08-15 | A kind of multrirange sulfur hexafluoride density relay tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821320557.3U CN208833887U (en) | 2018-08-15 | 2018-08-15 | A kind of multrirange sulfur hexafluoride density relay tester |
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| Publication Number | Publication Date |
|---|---|
| CN208833887U true CN208833887U (en) | 2019-05-07 |
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ID=66309459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821320557.3U Active CN208833887U (en) | 2018-08-15 | 2018-08-15 | A kind of multrirange sulfur hexafluoride density relay tester |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110888054A (en) * | 2019-12-27 | 2020-03-17 | 常州捷卓智能科技有限公司 | Electrified calibration equipment of sulfur hexafluoride density relay |
| CN111952105A (en) * | 2020-07-07 | 2020-11-17 | 国家电网有限公司 | Full-range high-precision remote transmission type sulfur hexafluoride gas density relay |
| CN112002608A (en) * | 2020-09-03 | 2020-11-27 | 西安亚能电气有限责任公司 | Assembling process of sulfur hexafluoride gas density relay |
| CN116008116A (en) * | 2023-03-17 | 2023-04-25 | 国网湖北省电力有限公司电力科学研究院 | Sulfur hexafluoride gas recovery rate measuring device and method |
-
2018
- 2018-08-15 CN CN201821320557.3U patent/CN208833887U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110888054A (en) * | 2019-12-27 | 2020-03-17 | 常州捷卓智能科技有限公司 | Electrified calibration equipment of sulfur hexafluoride density relay |
| CN111952105A (en) * | 2020-07-07 | 2020-11-17 | 国家电网有限公司 | Full-range high-precision remote transmission type sulfur hexafluoride gas density relay |
| CN112002608A (en) * | 2020-09-03 | 2020-11-27 | 西安亚能电气有限责任公司 | Assembling process of sulfur hexafluoride gas density relay |
| CN116008116A (en) * | 2023-03-17 | 2023-04-25 | 国网湖北省电力有限公司电力科学研究院 | Sulfur hexafluoride gas recovery rate measuring device and method |
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