CN206112505U - Mixed insulating gas of sulfur hexafluoride and nitrogen gas is irritated and is filled device - Google Patents
Mixed insulating gas of sulfur hexafluoride and nitrogen gas is irritated and is filled device Download PDFInfo
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- CN206112505U CN206112505U CN201621145230.8U CN201621145230U CN206112505U CN 206112505 U CN206112505 U CN 206112505U CN 201621145230 U CN201621145230 U CN 201621145230U CN 206112505 U CN206112505 U CN 206112505U
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Abstract
Mixed insulating gas of sulfur hexafluoride and nitrogen gas is irritated and is filled device, including a mass flow controller, one is filled and irritates the gas circuit, two distribution branch roads and two vacuum tube ways, a distribution branch road is equipped with high -purity sulfur hexafluoride air supply from the inlet end to the end of giving vent to anger in proper order, vaporizer and first relief pressure valve, another distribution branch road is equipped with high -purity nitrogen gas air supply and second relief pressure valve from the inlet end to the end of giving vent to anger in proper order, fill and irritate the gas circuit and be equipped with the buffer tank from the inlet end in proper order to the end of giving vent to anger, pressure balance control system, solenoid electric valve, gas compressor, an unidirectional valve, the cushion flask, pressure sensor and quick -operation joint. The utility model discloses mix through high accuracy mass flow controller the mist according to setting for concentration, through pressure balance controlling means's adjustment, gas compressor carries out gas pressurized and irritates and fill, also can carry out the correction of concentration proportion to concentration proportion and the bigger mist of establishing proportion deviation to ensure gas filled concentration ratio and guarantee good insulating nature.
Description
Technical field
The utility model belongs to high-voltage electrical equipment insulation technology field, more particularly to a kind of sulfur hexafluoride and nitrogen mixing
Insulating gas filling device.
Background technology
Sulfur hexafluoride gas (SF6) due to excellent insulating properties and high stability, being widely used in High-Voltage Electrical Appliances
In equipment.But SF6Gas also has weak point, expensive, and liquefaction is easy under low temperature and condition of high voltage, is not suitable for tight
Cold area uses；For example, -25 DEG C can be less than in the northern area of China winter open air temperature, sulfur hexafluoride breaker is in this temperature
Degree is lower can be because of SF6Gas liquefaction and cannot normal work.General list pressure type open air SF6Specified gas pressure of the breaker at 20 DEG C
Power is 0.7MPa（Absolute pressure）, SF6Gas liquefaction temperature is -25 DEG C or so.Therefore SF is worked as6Gas pressure drops to locking pressure
During value, breaker is had to out of service.Large-area power-cuts can be caused when serious.
SF6Gas or a kind of greenhouse gases, its greenhouse effects is equivalent CO223500 times；With the feel of environmental consciousness
Wake up, control SF6To the discharge of air, usage amount of the less SF6 gases in high-voltage switch gear just become inevitable to gas.
In order to change high-purity SF6Gas is easy to the characteristic for liquefying and reduces SF6The usage amount of gas, high-purity N2With it is high-purity
SF6Mixed according to a certain percentage, mixed insulating gas meets requirement of the high-voltage electrical equipment to insulating properties, while
Overcome high-purity SF6Gas is easy to the defect for liquefying under low temperature and condition of high voltage.According to relevant document report, using SF6/N2It is mixed
Arc extinguishing, dielectric of the gas as breaker is closed, in electric corporation of the foreign countries such as ABB, Siemens application has been obtained. and take
Obtained operating experience for many years.
At this stage, domestic market is also no can be to SF6Gas and N2The device for being mixed in proportion and being filled.
Utility model content
The utility model is in order to solve weak point of the prior art, there is provided a kind of simple structure, high degree of automation,
The quantitative sulfur hexafluoride of safe and reliable, mixing match and nitrogen mix insulation gas filler.
To solve above-mentioned technical problem, the utility model is adopted the following technical scheme that：Sulfur hexafluoride and nitrogen mix insulation
Gas filler, including mass flow controller, one charge gas circuit and two distribution branch roads, a distribution branch road from
Inlet end to outlet side is sequentially provided with high-purity sulfur hexafluoride source of the gas, vaporizer and the first pressure-reducing valve, and another distribution branch road is from entering
Gas end to outlet side is sequentially provided with high pure nitrogen source of the gas and the second pressure-reducing valve, and mass flow controller has two air inlets and
Individual gas outlet, the outlet side of two distribution branch roads corresponds to be connected with an air inlet of mass flow controller respectively, charges gas
The inlet end on road is connected with the gas outlet of mass flow controller, charges gas circuit and buffering is sequentially provided with from inlet end to outlet side
Tank, pressure balance control system, solenoid electric valve, gas compressor, check valve, surge flask, pressure sensor and snap joint.
Also include two vacuum-pumping pipelines, two vacuum-pumping pipelines have same outlet side, the outlet side is connected with takes out true
Empty joint, is respectively equipped with a magnetic valve in two vacuum-pumping pipelines, the inlet end of a vacuum-pumping pipeline is connected to electromagnetism control
Charging in gas circuit between valve processed and gas compressor, the inlet end of another vacuum-pumping pipeline is connected to surge flask and unidirectional
Charging in gas circuit between valve.
Using above-mentioned technical proposal, during distribution, canned high-purity SF6Gas is formed high-purity lithium after bus-bar
Sulphur source of the gas, high-purity sulfur hexafluoride gas of high-purity sulfur hexafluoride source of the gas release first pass through the vaporization of vaporizer and become gaseous state, Jing the
After the decompression of one pressure-reducing valve, gas pressure is stabilized to 0.15-0.2Mpa, is entered then into one of mass flow controller
Gas port；At the same time, canned high pure nitrogen reduces pressure also by high pure nitrogen source of the gas, high pure nitrogen Jing second is formed after bus-bar
After valve will reduce pressure, gas pressure is stabilized to 0.15-0.2Mpa, enters into another air inlet of mass flow controller；Two
Person carries out the preparation of quality and flow by mass flow controller, and configuration proportion can preset, and ultimately generate certain proportioning
Sulfur hexafluoride gas and nitrogen mixed gas.
Snap joint is connected to into mixed gas high-tension apparatus, gas can be filled to mixed gas high-tension apparatus.Quality stream
The sulfur hexafluoride and nitrogen mixed gas that amount controller is prepared enters surge tank, and mixed gas are by pressure balance control system
Adjustment, makes the tolerance for entering surge tank be equal to the air inflow of gas compressor air inlet, and pressure balance control system performs PID and calculates
Method, the result adjusted by pid algorithm is to ensure that the pressure inside surge tank is normal pressure, i.e. mass flow controller output is not suppressed
Pressure, it is ensured that the accuracy of mass flow controller output flow.Mixed gas are eventually passed after the supercharging of gas compressor, then
It is filled in the middle of high-voltage electrical equipment through check valve, surge flask and snap joint.Pressure sensor is used for monitoring to high-tension electricity
The pressure inflated in device equipment, when the blowing pressure of gas compressor is larger or smaller, due to there is part to mix in surge flask
Gas, it can be ensured that the continuity of inflation.
In order to reduce impact of the air inside the utility model and in high-voltage electrical equipment to gas-filling concentration, increase
Two vacuum-pumping pipelines.The utility model will be taken out when first being vacuumized to inside of the present utility model using front needs
The external vavuum pump of vacuum adapter, open two magnetic valves, start vavuum pump, you can to mass flow controller charge gas circuit and
Vacuumized inside two distribution branch roads and all parts；Snap joint is connected to into high-voltage electrical equipment, also can be simultaneously right
Mixed gas high-voltage electrical equipment inside and connecting line are vacuumized.By vacuumize can the utility model inside and
Air or foreign gas in high-voltage electrical equipment is taken away, weakens the impact of the mixed gas to preparing.
In sum, the utility model simple structure, high degree of automation, highly reliable, high pure nitrogen and high-purity six
Sulfur fluoride is mixed by high accuracy mass flow controller according to setting concentration, by the tune of pressure-equalizing control device
It is whole, gas boosting output is carried out with oil-less gas compressor, fill in mix insulation gas high pressure electric equipment, it is also possible to
Concentration ratio amendment is carried out to concentration ratio and the larger mixed gas of setting ratio deviation ratio, so that it is guaranteed that the concentration of inflation is matched somebody with somebody
Than ensureing good insulating properties.
Description of the drawings
Fig. 1 is structural representation of the present utility model.
Specific embodiment
As shown in figure 1, sulfur hexafluoride of the present utility model and nitrogen mix insulation gas filler, including a quality
Flow controller 8, one charges 3, two distribution branch roads 1 of gas circuit and two vacuum-pumping pipelines 20, and a distribution branch road 1 is from air inlet
Hold to outlet side and be sequentially provided with high-purity sulfur hexafluoride source of the gas 5, the pressure-reducing valve 7 of vaporizer 6 and first, another distribution branch road 1 is from entering
Gas end to outlet side is sequentially provided with the pressure-reducing valve 10 of high pure nitrogen source of the gas 9 and second, and mass flow controller 8 has two air inlets
With a gas outlet, the outlet side of two distribution branch roads 1 is corresponding respectively to be connected with an air inlet of mass flow controller 8,
The inlet end for charging gas circuit 3 is connected with the gas outlet of mass flow controller 8, charges gas circuit 3 from inlet end to outlet side successively
Be provided with surge tank 12, pressure balance control system 13, solenoid electric valve 14, gas compressor 15, check valve 16, surge flask 17,
Pressure sensor 18 and snap joint 4.
Two vacuum-pumping pipelines 20 have same outlet side, and the outlet side is connected with vacuumizing joint 19, and two vacuumize
A magnetic valve 21 is respectively equipped with pipeline 20, the inlet end of a vacuum-pumping pipeline 20 is connected to solenoid electric valve 14 and gas
Charging in gas circuit 3 between compressor 15, the inlet end of another vacuum-pumping pipeline 20 is connected to surge flask 17 and check valve 16
Between charge in gas circuit 3.
During distribution, canned high-purity SF6Gas forms high-purity sulfur hexafluoride source of the gas 5, high-purity hexafluoro after bus-bar
High-purity sulfur hexafluoride gas of the release of change sulphur source of the gas 5 first pass through the vaporization of vaporizer 6 and become gaseous state, and the first pressure-reducing valves of Jing 7 reduce pressure
Afterwards, gas pressure is stabilized to 0.15-0.2Mpa, then into an air inlet of mass flow controller 8；It is same with this
When, canned high pure nitrogen will reduce pressure also by high pure nitrogen source of the gas 9, the second pressure-reducing valves of high pure nitrogen Jing 10 is formed after bus-bar
Afterwards, gas pressure is stabilized to 0.15-0.2Mpa, enters into another air inlet of mass flow controller 8；Both pass through
Mass flow controller 8 carries out the preparation of quality and flow, and configuration proportion can preset, and ultimately generate the hexafluoro of certain proportioning
Change the mixed gas of sulphur gas and nitrogen.
Snap joint 4 is connected to into mixed gas high-tension apparatus, gas can be filled to mixed gas high-tension apparatus.Quality stream
The sulfur hexafluoride and nitrogen mixed gas that amount controller 8 is prepared enters surge tank 12, and mixed gas are by pressure balance control
The adjustment of system 13, makes the tolerance for entering surge tank 12 be equal to the air inflow of the air inlet of gas compressor 15, pressure balance control system
System 13 performs pid algorithm, and the result adjusted by pid algorithm is to ensure that the pressure inside surge tank 12 is normal pressure, i.e. quality stream
Amount controller 8 is exported and not built the pressure, it is ensured that the accuracy of the output flow of mass flow controller 8.Mixed gas eventually pass gas
After the supercharging of gas compressor 15, then it is filled in the middle of high-voltage electrical equipment through check valve 16, surge flask 17 and snap joint 4.
Pressure sensor 18 is used for the pressure that monitoring is inflated in high-voltage electrical equipment, when the blowing pressure of gas compressor 15 is larger or
When less, due to having part mixed gas in surge flask 17, it can be ensured that the continuity of inflation.
In order to reduce impact of the air inside the utility model and in high-voltage electrical equipment to gas-filling concentration, increase
Two vacuum-pumping pipelines 20.The utility model, will when first being vacuumized to inside of the present utility model using front needs
The external vavuum pump of vacuumizing joint 19, opens two magnetic valves 21, starts vavuum pump, you can to filling for mass flow controller 8
Vacuumized inside aeration road 3 and two distribution branch roads 1 and all parts；Snap joint 4 is connected to into high-voltage electrical equipment,
Also mixed gas high-voltage electrical equipment inside and connecting line can be vacuumized simultaneously.Can be this practicality by vacuumizing
Air or foreign gas in new internal and high-voltage electrical equipment is taken away, weakens the shadow of the mixed gas prepared to this patent
Ring.
The present embodiment not makees any pro forma restriction, every foundation to shape of the present utility model, material, structure etc.
Any simple modification, equivalent variations and modification that technical spirit of the present utility model is made to above example, belong to this reality
With the protection domain of new technique scheme.
Claims (2)
1. sulfur hexafluoride and nitrogen mix insulation gas filler, it is characterised in that：Including a mass flow controller, one
Individual to charge gas circuit and two distribution branch roads, a distribution branch road is sequentially provided with high-purity sulfur hexafluoride gas from inlet end to outlet side
Source, vaporizer and the first pressure-reducing valve, another distribution branch road is sequentially provided with high pure nitrogen source of the gas and from inlet end to outlet side
Two pressure-reducing valves, mass flow controller has two air inlets and a gas outlet, and the outlet side of two distribution branch roads is right respectively
Should be connected with mass flow controller air inlet, the gas outlet of the inlet end and mass flow controller that charge gas circuit connects
Connect, charge gas circuit and surge tank, pressure balance control system, solenoid electric valve, gas pressure are sequentially provided with from inlet end to outlet side
Contracting machine, check valve, surge flask, pressure sensor and snap joint.
2. sulfur hexafluoride according to claim 1 and nitrogen mix insulation gas filler, it is characterised in that：Also include
Two vacuum-pumping pipelines, two vacuum-pumping pipelines have same outlet side, and the outlet side is connected with vacuumizing joint, and two are taken out true
A magnetic valve is respectively equipped with blank pipe road, the inlet end of a vacuum-pumping pipeline is connected to solenoid electric valve and gas compressor
Between charge in gas circuit, the inlet end of another vacuum-pumping pipeline is connected between surge flask and check valve and charges gas circuit
On.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621145230.8U CN206112505U (en) | 2016-10-21 | 2016-10-21 | Mixed insulating gas of sulfur hexafluoride and nitrogen gas is irritated and is filled device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621145230.8U CN206112505U (en) | 2016-10-21 | 2016-10-21 | Mixed insulating gas of sulfur hexafluoride and nitrogen gas is irritated and is filled device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206112505U true CN206112505U (en) | 2017-04-19 |
Family
ID=58526511
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621145230.8U Expired - Fee Related CN206112505U (en) | 2016-10-21 | 2016-10-21 | Mixed insulating gas of sulfur hexafluoride and nitrogen gas is irritated and is filled device |
Country Status (1)
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| CN (1) | CN206112505U (en) |
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| CN107588322A (en) * | 2017-09-19 | 2018-01-16 | 国网安徽省电力公司电力科学研究院 | Sulfur hexafluoride gas mixture Recovery Purifying distribution making-up air device and its operating method |
| CN107726043A (en) * | 2017-09-08 | 2018-02-23 | 国家电网公司 | A kind of mixed gas remodeling method of 110kV sulfur hexafluoride gas insulation current transformers |
| CN108119749A (en) * | 2017-12-20 | 2018-06-05 | 国网河北省电力有限公司电力科学研究院 | A kind of SF6And N2Mixed gas air charging system and accurate inflation method |
| CN108194827A (en) * | 2018-02-12 | 2018-06-22 | 国家电网公司 | A kind of insulating gas processing unit and its control method |
| CN108227767A (en) * | 2017-12-20 | 2018-06-29 | 国网安徽省电力公司电力科学研究院 | A kind of mixed gas concentration real-time monitoring system |
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| CN108710067A (en) * | 2018-05-24 | 2018-10-26 | 国网陕西省电力公司电力科学研究院 | A kind of test device and method for testing insulating gas condensing temperature |
| CN108760796A (en) * | 2018-05-24 | 2018-11-06 | 国网陕西省电力公司电力科学研究院 | A kind of insulating gas condensing temperature test device and method based on Schering bridge |
| CN109237304A (en) * | 2018-06-04 | 2019-01-18 | 国网安徽省电力有限公司电力科学研究院 | Electrical equipment mix insulation gas prepares filling system |
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- 2016-10-21 CN CN201621145230.8U patent/CN206112505U/en not_active Expired - Fee Related
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| CN107726043A (en) * | 2017-09-08 | 2018-02-23 | 国家电网公司 | A kind of mixed gas remodeling method of 110kV sulfur hexafluoride gas insulation current transformers |
| CN107588322B (en) * | 2017-09-19 | 2024-05-17 | 国网安徽省电力公司电力科学研究院 | Gas distribution and supplementing device for purifying and recycling sulfur hexafluoride mixed gas and operation method thereof |
| CN107588322A (en) * | 2017-09-19 | 2018-01-16 | 国网安徽省电力公司电力科学研究院 | Sulfur hexafluoride gas mixture Recovery Purifying distribution making-up air device and its operating method |
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