CN207394355U - A kind of SF6 Mixed gas insulations equipment air charging system - Google Patents
A kind of SF6 Mixed gas insulations equipment air charging system Download PDFInfo
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- CN207394355U CN207394355U CN201721509998.3U CN201721509998U CN207394355U CN 207394355 U CN207394355 U CN 207394355U CN 201721509998 U CN201721509998 U CN 201721509998U CN 207394355 U CN207394355 U CN 207394355U
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- 238000009413 insulation Methods 0.000 title claims abstract description 45
- 238000002156 mixing Methods 0.000 claims abstract description 48
- 239000003085 diluting agent Substances 0.000 claims abstract description 20
- 229910018503 SF6 Inorganic materials 0.000 claims description 58
- 238000003860 storage Methods 0.000 claims description 10
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 claims description 5
- 239000012895 dilution Substances 0.000 claims description 3
- 238000010790 dilution Methods 0.000 claims description 3
- 229960000909 sulfur hexafluoride Drugs 0.000 claims description 2
- 239000000203 mixture Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 248
- 238000000034 method Methods 0.000 description 10
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 230000001502 supplementing effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 3
- 239000013589 supplement Substances 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009421 internal insulation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000009469 supplementation Effects 0.000 description 1
Landscapes
- Gas-Insulated Switchgears (AREA)
Abstract
The utility model provides a kind of SF6Mixed gas insulation equipment air charging system, air charging system include：SF6Gas inlet, diluent gas air inlet, mixed gas inlet and outlet, first gas blending tank, vacuum pump and gas compressor；SF6Gas inlet, diluent gas air inlet are connected to first gas blending tank by pipeline, vacuum pump and gas compressor are connected by pipeline with first gas blending tank, mixed gas inlet and outlet are connected by pipeline with vacuum pump and gas compressor, and second gas blending tank is imported and exported by pipeline with first gas blending tank, mixed gas respectively, vacuum pump and gas compressor are connected.The utility model can be directed to SF6The changed equipment of ratio of gas mixture carries out gas ratio adjusting, specified ratio and rated pressure is reached, it is also possible to for the SF leaked6Mixed gas insulation equipment carries out tonifying Qi, reaches rated pressure, can meet the needs of Mixed gas insulation equipment cavity inflation.
Description
Technical Field
The utility model relates to a mixed gas insulation equipment overhauls technique, and specific saying is an SF6An inflator for mixed gas insulation equipment.
Background
In high latitude and low temperature areas, due to SF6The liquefaction of the gas may cause the insulation breakdown or failure of the bus or the switchgear, so the SF is mostly adopted in the areas6The mixed gas insulates the device. At the same time, due to SF6The greenhouse effect produced is CO223900 times of that of SF used in the apparatus6Mixed gas replacing SF6Gas asThe insulating medium meets the requirement of the international implementation of environment-friendly gas.
At present, the internal insulation media of the mixed gas insulation equipment at home and abroad mainly comprise: SF6Air, SF6/CO2、SF6/CF4、SF6/N2And the like. SF6Mixed gas replacing pure SF6The gas is used as the insulating and arc-extinguishing medium of the equipment, and is adopted by some switch manufacturers at home and abroad. When the equipment needs to be supplemented with SF6When mixed gas is used, whether the requirements of rated gas mixing proportion and rated pressure can be met or not directly influences the low-temperature, insulation or arc extinguishing performance of equipment, so that the quick, safe and quantitative filling of the mixed gas is very important. SF6The supplement of the mixed gas can be divided into two conditions of cavity filling before the equipment is put into operation or after the equipment is overhauled and air supplementing filling after the equipment leaks.
In practical production operation application, because the technical threshold of the partial pressure gas supplementing method is low, the partial pressure gas supplementing method is frequently used under the condition of filling the cavity of the mixed gas insulation equipment, but the method is difficult to meet the gas supplementing requirement after the equipment leaks, and the gas mixing proportion of the filled mixed gas cannot be accurately controlled. In the process of long-term operation of the mixed gas insulation equipment, due to the problems of equipment manufacturing quality, equipment aging, equipment operation environment or equipment damage and the like, the condition of equipment air leakage may occur. And the supplement of pure SF is adopted for the mixed gas insulation equipment with gas leakage in more places6The method of gas or pure diluted gas can cause the change of the gas-mixing ratio in the equipment, and further influence the low-temperature, insulation or arc extinguishing performance of the equipment. The existing mixed gas inflation and gas supplementation device mostly adopts a method of fully exhausting and reconfiguring mixed gas for recharging for adjusting the mixed gas proportion, and the original mixed gas cannot be fully utilized, thereby causing waste.
Along with SF in China6The usage amount of the mixed insulating gas electrical equipment is increased day by day to ensure SF6The reliability requirements for the inflation and air make-up of mixed insulating gas equipment are becoming higher and higher. Therefore, there is a need for an SF6Mixed gas insulation deviceThe method and the device for filling gas on the standby site to meet the requirement of SF6Precise replenishment of mixed insulating gas and SF6And (5) regulating the gas mixing proportion of the mixed insulating gas.
SUMMERY OF THE UTILITY MODEL
For solving the problem of SF in the prior art6The embodiment of the utility model provides a not enough of mist insulation equipment tonifying qi, inflation technique, the utility model provides a SF6Gas-filled apparatus of mixed gas insulated equipment, SF6The mixed gas insulation equipment inflator includes: SF6The gas mixing device comprises a gas inlet, a diluent gas inlet, a mixed gas inlet and outlet, a first gas mixing tank, a vacuum pump and a gas compressor; wherein,
the SF6The gas inlet and the diluent gas inlet are connected with the first gas mixing tank through pipelines, the vacuum pump and the gas compressor are connected with the first gas mixing tank through pipelines, and the mixed gas inlet and outlet are connected with the vacuum pump and the gas compressor through pipelines;
and the second gas mixing tank is respectively connected with the first gas mixing tank, the mixed gas inlet and outlet, the vacuum pump and the gas compressor through pipelines.
In the embodiment of the present invention, the SF6The mixed gas insulation equipment inflator further includes: two flow quality controllers, said SF6The gas inlet and the dilution gas inlet are respectively connected to the first gas mixing tank through the flow mass controller.
In the embodiment of the present invention, the SF6The mixed gas insulation equipment inflator further includes: and the gas storage equipment is respectively connected with the second gas mixing tank, the mixed gas inlet and outlet, the vacuum pump and the gas compressor through pipelines.
The SF of the utility model6The inflation device of the mixed gas insulation equipment can realizeUnder the condition of less or no waste of the original mixed gas of the mixed gas insulated electrical equipment, the mixed gas filled in the mixed gas insulated electrical equipment is supplemented, and the proportion and the pressure of the mixed gas can be adjusted.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 shows an SF according to the present invention6A block diagram of an inflator for a mixed gas insulated apparatus;
FIG. 2 shows SF in an embodiment of the present invention6A block diagram of an inflator for a mixed gas insulated apparatus;
FIG. 3 shows SF in an embodiment of the present invention6Block diagram of an inflator for a mixed gas insulated apparatus.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model discloses a SF6Inflation device for mixed gas insulated equipment, as shown in figure 1, the utility model discloses an SF6The mixed gas insulation equipment inflator includes: SF6A gas inlet 101, a diluent gas inlet 102, a mixed gas inlet and outlet 103, a first gas mixing tank 104, a vacuum pump 105 and a gas compressor 106;
SF6the gas inlet 101 and the diluent gas inlet 101 are connected to a first gas mixing tank 104 through a pipeline 100, the vacuum pump 105 and the gas compressor 106 are connected to the first gas mixing tank 104 through pipelines, and the mixed gas inlet and outlet 103 is connected to the vacuum pump 105 and the gas compressor 106 through pipelines;
and a second gas mixing tank 107, wherein the second gas mixing tank 107 is respectively connected with the first gas mixing tank 104, the mixed gas inlet/outlet 103, the vacuum pump 105 and the gas compressor 106 through pipelines.
Meanwhile, as shown in FIG. 2, in the embodiment of the present invention, SF6The mixed gas insulation equipment inflator further includes: flow quality controllers 108 and 109, SF6The gas inlet 101, the dilution gas inlet 102 are connected to the first gas mixing tank 104 through a flow mass controller 108 and a flow mass controller 109, respectively.
In this example, SF6The mixed gas insulation equipment inflator further includes: and the gas storage device 110 is connected with the second gas mixing tank, the mixed gas inlet and outlet, the vacuum pump and the gas compressor through pipelines respectively.
The technical solution of the present invention will be described in further detail with reference to specific embodiments.
As shown in FIG. 3, the SF used in the present embodiment6The on-site inflation and air supplement device of the mixed gas insulation equipment has the schematic diagram, and the disclosed device specifically comprises:
SF6gas inlet 1 and SF6The gas is connected with a flow mass controller 3, a diluent gas inlet 2 is connected with a flow mass controller 4 for diluent gas, and then is respectively connected with a mixed gas premixing tank 8 through respective pipelines;
the vacuum pump 6 is respectively connected with a mixed gas inlet and outlet 5 connected with electrical equipment to be supplemented with gas or charged with gas, gas storage equipment 7 such as a steel cylinder, a mixed gas premixing tank 8 and a replaceable gas mixing tank 10 through pipelines;
the gas compressor 9 is respectively connected with a mixed gas inlet and outlet 5 connected with electrical equipment, gas storage equipment 7 such as a steel cylinder, a mixed gas premixing tank 8 and a replaceable gas mixing tank 10 through pipelines.
In one embodiment of the present invention, when SF6When the mixed gas insulation equipment leaks and the proportion of the mixed gas changes, the pure SF can be used6Gas and SF6The gas inlet 1 is communicated with the diluent gas inlet 2, the valves of the two gases are opened to output the gases, and then the gases respectively pass through SF6The gas flow mass controller 3 and the diluent gas flow mass controller 4 enter a mixed gas premixing tank 8 for mixing after flow mass control; furthermore, SF is pumped by vacuum pump 66The gas in the mixed gas insulation equipment is pumped into the replaceable gas mixing tank 10 from the mixed gas inlet and outlet 5 connected with the electrical equipment, and the pumped gas quantity and SF are6The mixed gas proportion and the gas capacity in the mixed gas insulation equipment are related, and the gas pumping quantity is enabled to reach SF6The rated pressure of the mixed gas insulation equipment and the rated mixed gas proportion are the standard, the mixed gas insulation equipment can be completely pumped out or partially pumped out, and the capacity of the replaceable gas mixing tank 10 can be replaced according to the capacity requirement; then, the mixed gas in the mixed gas premixing tank 8 is filled into the replacement type gas mixing tank 10, after the mixed gas is mixed, the gas is filled into the leaked SF from the mixed gas inlet and outlet 5 connected with the electrical equipment through the gas compressor 96In a mixed gas insulated apparatus; for excess exhaust gas, canThe gas is charged into a gas storage device 7 such as a steel cylinder through a gas compressor 9.
In one embodiment of the present invention, when SF6When the mixed gas insulation equipment is at the rated pressure but the mixed gas proportion does not meet the rated requirement, pure SF can be used6Gas and SF6The gas inlet 1 is communicated with the diluent gas inlet 2, the valves of the two gases are opened to output the gases, and then the gases respectively pass through SF6The gas flow mass controller 3 and the diluent gas flow mass controller 4 enter a mixed gas premixing tank 8 for mixing after flow mass control; furthermore, SF is pumped by a vacuum pump 66The gas in the mixed gas insulation equipment is pumped into the replaceable gas mixing tank 10 from a mixed gas inlet and outlet 5 connected with the electrical equipment, and the pumped gas quantity and SF are6The mixed gas proportion and the gas capacity in the mixed gas insulation equipment are related, and the gas pumping quantity can reach the SF6The rated pressure of the mixed gas insulation equipment and the rated mixed gas proportion are the standard, the mixed gas insulation equipment can be completely pumped out or partially pumped out, and the capacity of the replaceable gas mixing tank 10 can be replaced according to the capacity requirement; then, the mixed gas in the mixed gas premixing tank 8 is filled into the replacement type gas mixing tank 10, after the mixed gas is mixed, the gas is filled into the leaked SF from the mixed gas inlet and outlet 5 connected with the electrical equipment through the gas compressor 96In a mixed gas insulated apparatus; for the surplus exhaust gas, the gas can be charged into a gas storage device 7 such as a steel cylinder by a gas compressor 9.
In one embodiment of the present invention, when SF6When the mixed gas insulation equipment leaks but the proportion of the mixed gas is not changed, pure SF can be used6Gas and SF6The gas inlet 1 is communicated with the diluent gas inlet 2, the valves of the two gases are opened to output the gases, and then the gases respectively pass through SF6The gas flow mass controller 3 and the diluent gas flow mass controller 4 are controlled by the flow mass, and then mixed in the mixed gas premixing tank 8, and after mixing, the gas is mixed by the gas compressor 9 connected from the electric equipmentSF gas leakage is filled into the gas inlet and outlet 56In a mixed gas insulated apparatus.
In one embodiment of the present invention, when SF6When the mixed gas insulation equipment is in a cavity state, the electric equipment can be connected with the mixed gas inlet and outlet 5, and the SF is pumped by the vacuum pump 66Vacuumizing the mixed gas insulation equipment to obtain pure SF6Gas and SF6The gas inlet 1 is communicated with the diluent gas inlet 2, the valves of the two gases are opened to output the gases, and then the gases respectively pass through SF6The gas flow mass controller 3 and the diluent gas flow mass controller 4 enter a mixed gas premixing tank 8 for mixing after flow mass control, and after mixing, the gas is filled into leaked SF from a mixed gas inlet and outlet 5 connected with electrical equipment through a gas compressor 96In a mixed gas insulated apparatus.
The utility model relates to an embodiment, when configuring the mist as large-traffic gas distribution appearance, can be with gas storage equipment 7 such as steel bottle, take out to the vacuum through gas storage equipment 7 such as vacuum pump 6 with the steel bottle, with pure SF6Gas and SF6The gas inlet 1 is communicated with the diluent gas inlet 2, the valves of the two gases are opened to output the gases, and then the gases respectively pass through SF6The gas flow mass controller 3 and the diluent gas flow mass controller 4 enter a mixed gas premixing tank 8 for mixing after flow mass control, and after mixing is finished, the gas is filled into gas storage equipment 7 such as a steel cylinder through a gas compressor 9.
The technical scheme of the utility model can be to SF6The equipment with the changed mixed gas proportion adjusts the gas proportion to reach the rated proportion and the rated pressure, and simultaneously, the equipment can also aim at the leaked SF6The mixed gas insulation equipment is used for supplementing gas to enable the mixed gas insulation equipment to reach rated pressure, the requirement of cavity inflation of the mixed gas insulation equipment can be met, and the mixed gas insulation equipment can be used as a large-flow gas distribution instrument.
The present invention has been explained by using specific embodiments, and the explanation of the above embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.
Claims (3)
1. SF (sulfur hexafluoride)6The gas filling device for the mixed gas insulation equipment is characterized in that the SF6The mixed gas insulation equipment inflator includes: SF6The gas mixing device comprises a gas inlet, a diluent gas inlet, a mixed gas inlet and outlet, a first gas mixing tank, a vacuum pump and a gas compressor; wherein,
the SF6The gas inlet and the diluent gas inlet are connected with the first gas mixing tank through pipelines, the vacuum pump and the gas compressor are connected with the first gas mixing tank through pipelines, and the mixed gas is led to the inlet and the outletThe pipeline is connected with a vacuum pump and a gas compressor;
and the second gas mixing tank is respectively connected with the first gas mixing tank, the mixed gas inlet and outlet, the vacuum pump and the gas compressor through pipelines.
2. The SF according to claim 16The mixed gas insulation equipment inflation device is characterized in that the device further comprises: two flow quality controllers, said SF6The gas inlet and the dilution gas inlet are respectively connected to the first gas mixing tank through the flow mass controller.
3. The SF according to claim 16The mixed gas insulation equipment inflation device is characterized in that the device further comprises: and the gas storage equipment is respectively connected with the second gas mixing tank, the mixed gas inlet and outlet, the vacuum pump and the gas compressor through pipelines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721509998.3U CN207394355U (en) | 2017-11-14 | 2017-11-14 | A kind of SF6 Mixed gas insulations equipment air charging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721509998.3U CN207394355U (en) | 2017-11-14 | 2017-11-14 | A kind of SF6 Mixed gas insulations equipment air charging system |
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| Publication Number | Publication Date |
|---|---|
| CN207394355U true CN207394355U (en) | 2018-05-22 |
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| CN201721509998.3U Active CN207394355U (en) | 2017-11-14 | 2017-11-14 | A kind of SF6 Mixed gas insulations equipment air charging system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107830402A (en) * | 2017-11-14 | 2018-03-23 | 华北电力科学研究院有限责任公司 | A kind of SF6Mixed gas insulation equipment aerating device and method |
-
2017
- 2017-11-14 CN CN201721509998.3U patent/CN207394355U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107830402A (en) * | 2017-11-14 | 2018-03-23 | 华北电力科学研究院有限责任公司 | A kind of SF6Mixed gas insulation equipment aerating device and method |
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