CN218295340U - SF6 gas-filled pipeline - Google Patents
SF6 gas-filled pipeline Download PDFInfo
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- CN218295340U CN218295340U CN202222189206.6U CN202222189206U CN218295340U CN 218295340 U CN218295340 U CN 218295340U CN 202222189206 U CN202222189206 U CN 202222189206U CN 218295340 U CN218295340 U CN 218295340U
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- portable vacuum
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Abstract
An SF6 gas charging pipeline comprises a pipeline, a portable vacuum pump and a flow dividing device, wherein the pipeline is connected between equipment and a gas cylinder, one end of the pipeline is provided with an equipment switching port connected with the equipment, and the other end of the pipeline is provided with a gas cylinder switching port connected with the gas cylinder; the portable vacuum pump is connected with the pipeline and used for vacuumizing the interior of the pipeline; the flow dividing device is connected with the portable vacuum pump and comprises a three-way reversing valve, an exhaust port and a gas storage bottle, and the three-way reversing valve is connected with the portable vacuum pump; the exhaust port is connected with the three-way reversing valve and can exhaust air outwards; the gas storage cylinder is connected with the three-way reversing valve to temporarily store SF6 gas, and different evacuation treatment methods are adopted according to different residual gases in the pipeline.
Description
Technical Field
The utility model belongs to electric power construction equipment field specifically is a SF6 gas filled tube way.
Background
Sulfur hexafluoride (SF 6) gas is widely used as an insulating medium for high-voltage electrical equipment, and in most high-voltage equipment, after the sulfur hexafluoride gas is used for a period of time, the SF6 gas needs to be recovered, inflated and supplemented to ensure the safe reliability of the operation of the equipment. Since SF6 is a non-toxic but asphyxiant agent, and SF6 gas with an excessively high content in the air can suffocate the human body, it is necessary to prevent the SF6 gas from remaining in the gas transmission pipeline and leaking into the air after the processes of SF6 recovery, inflation and air supplement are performed on the equipment. Meanwhile, because the problem that air enters the pipeline exists after the process of SF6 recovery, inflation and air supplement is carried out on the equipment, part of SF6 gas is wasted for flushing the pipeline before the equipment is used next time, so that the air is discharged, otherwise, when the air in the pipeline is not completely flushed, serious consequences such as reduction of insulating capability and breakdown of the equipment can be caused after the equipment is connected into high-voltage equipment, and the improvement is needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the shortcoming of prior art, provide a SF6 gas charging line.
The utility model adopts the following technical scheme:
an SF6 gas charging pipeline comprises a pipeline, a portable vacuum pump and a flow dividing device, wherein the pipeline is connected between equipment and a gas cylinder, one end of the pipeline is provided with an equipment switching port connected with the equipment, and the other end of the pipeline is provided with a gas cylinder switching port connected with the gas cylinder; the portable vacuum pump is connected with the pipeline and used for vacuumizing the interior of the pipeline; the flow dividing device is connected with the portable vacuum pump and comprises a three-way reversing valve, an exhaust port and a gas storage bottle, and the three-way reversing valve is connected with the portable vacuum pump; the exhaust port is connected with the three-way reversing valve and can discharge air outwards; the gas storage cylinder is connected with the three-way reversing valve to temporarily store SF6 gas.
Preferably, the exhaust gas treatment device is connected with the exhaust port and comprises an air inlet pipe, a liquid storage tank and an air outlet pipe, wherein one end of the air inlet pipe is connected with the exhaust port, and the other end of the air inlet pipe extends into the liquid storage tank; the liquid storage tank is used for containing solution, and the tail end of the air inlet pipe is positioned at the bottom of the liquid storage tank; the air outlet pipe is arranged at the top of the liquid storage tank to communicate the inner space of the liquid storage tank with the outside and exhaust the air outwards.
Preferably, be provided with the decompression check valve on the pipeline, decompression check valve sets up and lies in on the pipeline and be close to gas cylinder interface one side.
Preferably, the pipeline is further provided with a high-low pressure gauge for monitoring gas pressure in the pipeline, and the high-low pressure gauge is arranged on the pipeline on one side close to the gas cylinder connector and behind the pressure reducing check valve.
Preferably, the pipeline is provided with a T-shaped pipe, the T-shaped pipe is located at the center of the pipeline, two ends of the T-shaped pipe are respectively connected with the pipeline, and the portable vacuum pump is connected with the top end of the T-shaped pipe.
It is right from the above-mentioned description of the utility model discloses, compare with prior art, the beneficial effect of the utility model is that: when SF6 gas needs to be conveyed or recovered into the equipment, a pipeline is connected between a gas bottle and the equipment, switching ports at two ends of the pipeline are closed, a three-way reversing valve is adjusted to a gas outlet to be communicated with a portable vacuum pump, then the portable vacuum pump is started, the gas in the pipeline is pumped out and directly discharged into the air from the gas outlet, then the switching ports are opened, the gas bottle is opened, and the SF6 gas begins to be filled into the equipment, so that the problem that the safety of the equipment is influenced because residual air in the pipeline is conveyed into the equipment is avoided; after the conveying or the recovery of the SF6 gas is finished, the adapters at the two ends are closed, the three-way reversing valve is adjusted to enable the portable vacuum pump to be communicated with the gas storage bottle, then the portable vacuum pump is opened to collect the residual SF6 gas in the pipeline into the gas storage bottle for collection, the residual SF6 gas can be recovered and reused, meanwhile, the SF6 gas is prevented from leaking when the pipeline is disassembled, different treatment modes can be made for different gases through the three-way reversing valve, and the three-way reversing valve has high practicability;
when the pipeline is disassembled, a small amount of SF6 gas mixed in the air is prevented from being discharged from the exhaust port, so that the tail gas is introduced into the solution through the tail gas treatment device, and because the SF6 is slightly soluble in water and the residual SF6 gas in the air is not much, the water is used as the tail gas treatment solution to finish the collection of the residual SF 6;
the check valve can prevent the reverse flow in the SF6 gas conveying process;
the high-pressure gauge monitors the air pressure condition of the air bottle outlet, and the low-pressure gauge monitors the air pressure condition of the pipeline inlet, so that manual identification operation is facilitated.
Drawings
Fig. 1 is a schematic structural view of the present invention;
in the figure: 1-pipeline, 11-equipment adapter, 12-gas cylinder adapter, 13-pressure reducing check valve, 14-high-low pressure meter, 15-T-shaped pipe, 2-portable vacuum pump, 3-flow divider, 31-three-way reversing valve, 32-exhaust port, 33-gas storage cylinder, 4-tail gas treatment device, 41-gas inlet pipe, 42-liquid storage tank and 43-gas outlet pipe.
Detailed Description
The present invention will be further described with reference to the following detailed description.
Referring to fig. 1, the SF6 gas charging pipeline comprises a pipeline 1, a portable vacuum pump 2, a flow dividing device 3 and an exhaust gas treatment device 4.
Pipeline 1 is connected between equipment and gas cylinder, and one end is provided with the equipment switching mouth 11 of being connected with equipment, and the other end is provided with the gas cylinder switching mouth 12 of being connected with the gas cylinder, and accessible equipment switching mouth 11 and the removable transition switching mouth of the different specifications of gas cylinder switching mouth 12 collocation can most signal device of adaptation and gas cylinder. The pipeline 1 is provided with a pressure reducing check valve 13 and a high-low pressure meter 14, the pressure reducing check valve 13 is arranged on the pipeline 1 and is positioned at one side close to the gas cylinder interface, and the pressure reducing check valve 13 is used for unidirectionally transmitting SF6 gas conveyed by a gas cylinder, reducing the gas pressure and controlling the gas flow, so that stable inflation is ensured and air and moisture pollution can be effectively prevented; high-low pressure table 14 sets up and lies in being close to gas cylinder interface one side and lie in decompression check valve 13 rear on pipeline 1, and the atmospheric pressure condition of gas cylinder delivery outlet is monitored to the high-pressure table, and the manual identification operation of being convenient for is operated to the atmospheric pressure condition of 1 input ports of low-pressure table monitoring pipeline.
The portable vacuum pump 2 is connected with the pipeline 1, and vacuumizes the interior of the pipeline 1. Specifically, a T-shaped pipe 15 is arranged on the pipeline 1, the T-shaped pipe 15 is located at the center of the pipeline 1, two ends of the T-shaped pipe 15 are respectively connected with the pipeline 1, and the portable vacuum pump 2 is connected with the top end of the T-shaped pipe 15.
The flow dividing device 3 is connected with the portable vacuum pump 2 and comprises a three-way reversing valve 31, an exhaust port 32 and a gas storage bottle 33, and the three-way reversing valve 31 is connected with the portable vacuum pump 2; the exhaust port 32 is connected with the three-way reversing valve 31 and can discharge air outwards; the gas bomb 33 is connected with the three-way reversing valve 31 to temporarily store SF6 gas, the portable vacuum pump 2 is respectively communicated with the gas cylinder and the gas outlet 32 by adjusting the three-way reversing valve 31, different treatments can be made for different gases in the pipeline 1, and the gas bomb has high practicability.
The tail gas treatment device 4 is connected with the exhaust port 32 and comprises a gas inlet pipe 41, a liquid storage tank 42 and a gas outlet pipe 43, one end of the gas inlet pipe 41 is connected with the exhaust port 32, and the other end of the gas inlet pipe extends into the liquid storage tank 42; the liquid storage tank 42 is used for containing solution, and the tail end of the air inlet pipe 41 is positioned at the bottom of the liquid storage tank 42; the air outlet pipe 43 is provided at the top of the reservoir tank 42 to communicate the inner space of the reservoir tank 42 with the outside and exhaust air to the outside. When dismantling pipeline 1, avoided mixing the gaseous discharge from gas vent 32 of a small amount of SF6 in the air, so through tail gas processing apparatus 4, let in tail gas in the solution, because SF6 is slightly soluble in water and remaining SF6 is gaseous not much in the air, so adopt water to do tail gas treatment solution, accomplish the collection to remaining SF 6.
When SF6 gas needs to be conveyed or recovered into the equipment, the pipeline 1 is connected between the gas cylinder and the equipment, the adapter ports at two ends of the pipeline 1 are closed, the three-way reversing valve 31 is adjusted to the exhaust port 32 to be communicated with the portable vacuum pump 2, then the portable vacuum pump 2 is started, the gas in the pipeline 1 is evacuated and directly discharged into the air from the exhaust port 32, then the adapter ports are opened, the gas cylinder is opened, and the SF6 gas begins to be filled into the equipment, so that the problem that the safety of the equipment is influenced because residual air in the pipeline 1 is conveyed into the equipment is avoided; after conveying or retrieving SF6 gas, before need dismantling pipeline 1, close the both ends adapter, adjust tee bend switching-over valve 31 to making portable vacuum pump 2 and gas bomb 33 intercommunication, then open portable vacuum pump and collect in pipeline 1 remaining SF6 gas collects to gas bomb 33 in, can recycle remaining SF6 gas recovery, SF6 gas leakage when avoiding pipeline 1 to dismantle simultaneously, and can make different treatment methods to different gases through tee bend switching-over valve 31, have very high practicality.
The above description is only a preferred embodiment of the present invention, and therefore the scope of the present invention should not be limited thereby, and all equivalent changes and modifications made within the scope of the claims and the specification should be considered within the scope of the present invention.
Claims (5)
1. An SF6 gas charging pipeline, characterized in that: the device comprises a pipeline, a portable vacuum pump and a flow dividing device, wherein the pipeline is connected between equipment and a gas cylinder, one end of the pipeline is provided with an equipment switching port connected with the equipment, and the other end of the pipeline is provided with a gas cylinder switching port connected with the gas cylinder; the portable vacuum pump is connected with the pipeline and used for vacuumizing the interior of the pipeline; the flow dividing device is connected with the portable vacuum pump and comprises a three-way reversing valve, an exhaust port and a gas storage bottle, and the three-way reversing valve is connected with the portable vacuum pump; the exhaust port is connected with the three-way reversing valve and can discharge air outwards; the gas storage cylinder is connected with the three-way reversing valve to temporarily store SF6 gas.
2. An SF6 gas filling pipe according to claim 1, wherein: the tail gas treatment device is connected with the exhaust port and comprises a gas inlet pipe, a liquid storage tank and a gas outlet pipe, wherein one end of the gas inlet pipe is connected with the exhaust port, and the other end of the gas inlet pipe extends into the liquid storage tank; the liquid storage tank is used for containing solution, and the tail end of the air inlet pipe is positioned at the bottom of the liquid storage tank; the air outlet pipe is arranged at the top of the liquid storage tank to communicate the inner space of the liquid storage tank with the outside and exhaust the air outwards.
3. An SF6 gas filling pipe according to claim 1, wherein: the pipeline is provided with a pressure-reducing check valve, and the pressure-reducing check valve is arranged on the pipeline and is close to one side of the gas cylinder connector.
4. An SF6 gas injection pipeline as claimed in claim 3, wherein: the pipeline is also provided with a high-low pressure meter for monitoring the gas pressure in the pipeline, and the high-low pressure meter is arranged on the pipeline and is positioned on one side close to the gas cylinder connector and behind the pressure reduction check valve.
5. An SF6 gas injection pipeline as claimed in claim 3, wherein: the pipeline is provided with a T-shaped pipe, the T-shaped pipe is located at the center of the pipeline, two ends of the T-shaped pipe are respectively connected with the pipeline, and the portable vacuum pump is connected with the top end of the T-shaped pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222189206.6U CN218295340U (en) | 2022-08-19 | 2022-08-19 | SF6 gas-filled pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222189206.6U CN218295340U (en) | 2022-08-19 | 2022-08-19 | SF6 gas-filled pipeline |
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| Publication Number | Publication Date |
|---|---|
| CN218295340U true CN218295340U (en) | 2023-01-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222189206.6U Active CN218295340U (en) | 2022-08-19 | 2022-08-19 | SF6 gas-filled pipeline |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117053092A (en) * | 2023-10-11 | 2023-11-14 | 常州优达电子科技有限公司 | SF6 vacuumizing and inflating device |
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2022
- 2022-08-19 CN CN202222189206.6U patent/CN218295340U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117053092A (en) * | 2023-10-11 | 2023-11-14 | 常州优达电子科技有限公司 | SF6 vacuumizing and inflating device |
| CN117053092B (en) * | 2023-10-11 | 2023-12-22 | 常州优达电子科技有限公司 | SF6 vacuumizing and inflating device |
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