CN209744060U - SF6 gas recovery device with gas cooling function - Google Patents
SF6 gas recovery device with gas cooling function Download PDFInfo
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- CN209744060U CN209744060U CN201920515940.2U CN201920515940U CN209744060U CN 209744060 U CN209744060 U CN 209744060U CN 201920515940 U CN201920515940 U CN 201920515940U CN 209744060 U CN209744060 U CN 209744060U
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Abstract
The utility model relates to a SF6 gas recovery unit with gas cooling function, which comprises an air inlet, an air outlet, a vacuum pump, a vacuum gauge, a pressure vessel, a manual ball valve V1-V7 and a condenser; the air outlet is connected with SF6 electrical equipment and is connected with the air inlet through an air conveying hose, and the manual ball valve V2 and the manual ball valve are arranged on the air conveying hose between the air inlet and the air outlet; the pressure container is connected to the GIS tank body through an air hose, the manual ball valve V7 is arranged at the air inlet end of the air hose between the pressure container and the GIS tank body, and the manual ball valve V4 is arranged at the air outlet end of the air hose between the pressure container and the GIS tank body; one end of the condenser is connected to the pressure container through a manual ball valve V5, and the other end of the condenser is connected to the GIS tank body through a manual ball valve V6. When the room temperature exceeds 5 ℃, the heat generation of the air chamber of the SF6 electrical equipment is reduced, the large temperature difference in a short time is avoided, the aging of the equipment is delayed, and the long-term operation of the equipment is facilitated.
Description
Technical Field
The utility model relates to a SF6 gas recovery device, in particular to SF6 gas recovery device with gas cooling function.
Background
The SF6 gas as an insulating gas has the advantages of no toxicity, incombustibility, good insulating property, high insulating strength and good arc extinguishing property, and is widely applied to SF6 electric appliances. Since the SF6 gas is expensive and can be decomposed to produce toxic components under the action of electric arc, electric spark and corona discharge. Therefore, after the SF6 electrical equipment is applied for a period of time, the SF6 gas needs to be recovered and refilled with new gas. The SF6 gas recovery device is a special device for recovering and charging SF6 gas when manufacturing and maintaining SF6 electrical equipment.
When SF6 gas is inflated for SF6 electrical equipment, heat is generated due to gas compression, so that the SF6 electrical equipment has large temperature difference in a short time, and the aging of the equipment is easy to accelerate.
SUMMERY OF THE UTILITY MODEL
therefore, the SF6 gas recovery device with the gas cooling function is needed to be provided, and the problem that when SF6 gas is inflated to SF6 electrical equipment in the prior art, the SF6 electrical equipment generates heat due to gas compression, so that large temperature difference occurs in a short time, and equipment aging is easily accelerated is solved.
In order to achieve the aim, the inventor provides an SF6 gas recovery device with a gas cooling function, which comprises a gas inlet, a gas outlet, a vacuum pump, a vacuum gauge, a pressure container, a manual ball valve V1-V7 and a condenser;
The air outlet is connected with SF6 electrical equipment and is connected with the air inlet through an air conveying hose, and the manual ball valve V2 and the manual ball valve are arranged on the air conveying hose between the air inlet and the air outlet;
The air exhaust end of the vacuum pump is connected with an air hose between the manual ball valve V2 and the manual ball valve V3 through an air hose, and the manual ball valve V1 is arranged at the air exhaust end of the vacuum pump;
The vacuum gauge is connected with a gas transmission hose between the manual ball valve V2 and the manual ball valve V3 through the gas transmission hose;
The pressure container is connected to the GIS tank body through an air hose, the manual ball valve V7 is arranged at the air inlet end of the air hose between the pressure container and the GIS tank body, and the manual ball valve V4 is arranged at the air outlet end of the air hose between the pressure container and the GIS tank body;
One end of the condenser is connected to the pressure container through a manual ball valve V5, and the other end of the condenser is connected to the GIS tank body through a manual ball valve V6.
further optimizing, still include SF6 recovery compressor and relief pressure valve, SF6 retrieves the bleed end of compressor and passes through relief pressure valve and manual ball valve V8 and connect the pressure vessel, and the air-out end is connected in the air-supply pipe between manual ball valve V4 and the manual ball valve V7.
Further preferably, the air outlet end of the SF6 recovery compressor is provided with a one-way valve.
Further optimizing, SF6 retrieves the compressor's air outlet end filtration system.
Further preferably, the air outlet end of the SF6 recovery compressor is provided with a drying heater.
Be different from prior art, above-mentioned technical scheme when needs aerify SF6 electrical equipment, closes all manual ball valves, opens manual ball valve V1 and V3, carries out the evacuation to the gas transmission hose between gas outlet and air inlet through the vacuum pump, according to the reading of vacuum gauge, when the reading of vacuum gauge reached stably and is less than 1mbar, closes manual ball valve V1 and V3, and the evacuation is accomplished. When the SF6 electrical equipment is inflated, when the room temperature is lower than 5 ℃, cooling is not needed, manual ball valves V2, V3, V4 and V7 are opened, pressure is provided through a pressure container, the SF6 electrical equipment is inflated, when the room temperature exceeds 5 ℃, cooling is needed, manual ball valves V2, V3, V5 and V6 are opened, gas input into the SF6 electrical equipment is cooled through a condenser, whether the counting of a vacuum gauge reaches the needed pressure or not is observed in the process of inflating, when the needed pressure is reached, the SF6 is indicated to be inflated, all the manual ball valves are closed, and inflation is completed. When the room temperature exceeds 5 ℃, the heat generation of the air chamber of the SF6 electrical equipment is reduced, the large temperature difference in a short time is avoided, the aging of the equipment is delayed, and the long-term operation of the equipment is facilitated.
Drawings
fig. 1 is a schematic structural diagram of an SF6 gas recovery device with a gas cooling function according to an embodiment.
Detailed Description
to explain technical contents, structural features, and objects and effects of the technical solutions in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.
Referring to fig. 1, the SF6 gas recycling device with gas cooling function in this embodiment includes a gas inlet, a gas outlet, a vacuum pump, a vacuum gauge, a pressure vessel, a manual ball valve V1-V7, and a condenser S1;
The air outlet is connected with SF6 electrical equipment and is connected with the air inlet through an air conveying hose, and the manual ball valve V2 and the manual ball valve are arranged on the air conveying hose between the air inlet and the air outlet;
the air exhaust end of the vacuum pump is connected with an air hose between the manual ball valve V2 and the manual ball valve V3 through an air hose, and the manual ball valve V1 is arranged at the air exhaust end of the vacuum pump;
the vacuum gauge is connected with a gas transmission hose between the manual ball valve V2 and the manual ball valve V3 through the gas transmission hose;
The pressure container is connected to the GIS tank body through an air hose, the manual ball valve V7 is arranged at the air inlet end of the air hose between the pressure container and the GIS tank body, and the manual ball valve V4 is arranged at the air outlet end of the air hose between the pressure container and the GIS tank body;
One end of the condenser S1 is connected to the pressure vessel through a manual ball valve V5, and the other end is connected to the GIS tank through a manual ball valve V6.
wherein, in the initial state, all manual ball valves are in a closed state. Before the SF6 electrical equipment needs to be inflated, the air transmission hose between the SF6 electrical equipment and the recovery device needs to be vacuumized. And closing all the manual ball valves, simultaneously avoiding opening an air chamber valve of SF6 electrical equipment, then opening the manual ball valves V1 and V3, vacuumizing an air conveying hose between an air outlet and an air inlet through a vacuum pump, closing the manual ball valves V1 and V3 when the reading of the vacuum gauge is stable and less than 1mbar according to the reading of the vacuum gauge, and finishing evacuation. When the SF6 electrical equipment is inflated, when the room temperature is lower than 5 ℃, cooling is not needed, manual ball valves V2, V3, V4 and V7 are opened, pressure is provided through a pressure container, the SF6 electrical equipment is inflated, when the room temperature exceeds 5 ℃, cooling is needed, manual ball valves V2, V3, V5 and V6 are opened, gas input into the SF6 electrical equipment is cooled through a condenser S1, whether the count of a vacuum gauge reaches the needed pressure or not is observed in the inflation process, when the needed pressure is reached, the SF6 is indicated to be inflated, all manual ball valves are closed, and inflation is completed. When the room temperature exceeds 5 ℃, the heat generation of the air chamber of the SF6 electrical equipment is reduced, the large temperature difference in a short time is avoided, the aging of the equipment is delayed, and the long-term operation of the equipment is facilitated.
in this case, in order to avoid the situation that the inflation pressure in the pressure container is insufficient and the inflation cannot be completed, the pressure container further comprises an SF6 recovery compressor and a pressure reducing valve, wherein the air exhaust end of the SF6 recovery compressor is connected to the pressure container through the pressure reducing valve and a manual ball valve V8, and the air outlet end of the SF6 recovery compressor is connected to the air pipe between the manual ball valve V4 and the manual ball valve V7. When the pressure of the pressure container is insufficient, when the room temperature is lower than 5 ℃, keeping the manual ball valves V3 and V4 open, closing the manual ball valve V7, opening the manual ball valves V8 and SF6 to recycle the compressor, regulating the pressure reducing valve V61 to pressurize the SF6 recycle compressor, inflating SF6 electrical equipment, and when the reading of the vacuum gauge is observed to reach the required pressure, closing all the manual ball valves and the SF6 to recycle the compressor to finish inflation; and when the room temperature exceeds 5 ℃, keeping the manual ball valves V3, V5 and V6 open, closing the manual ball valve V7, opening the manual ball valves V8 and SF6 to recycle the compressor, pressurizing the SF6 recycle compressor by adjusting the pressure reducing valve V61, inflating SF6 electrical equipment, cooling inflation gas by a condenser S1, and closing all the manual ball valves and the SF6 recycle compressor to finish inflation when the reading of the vacuum gauge reaches the required pressure. Meanwhile, according to the fact that the saturated vapor pressure of pure SF6 gas is related to the temperature, under the condition of the same inflation pressure, the lower inflation temperature can enable more SF6 gas to be flushed into a gas chamber of SF6 electrical equipment, the requirement for the compressor is lowered, and the work load of the compressor is relieved.
in this embodiment, in order to avoid gas backflow, the outlet end of the SF6 recovery compressor is provided with a one-way valve. The one-way valve is arranged at the air outlet end of the SF6 recovery compressor, so that the inflation gas of the SF6 recovery compressor can only flow to SF6 electrical equipment in a one-way mode, and the inflation gas in the pressure container is prevented from flowing to the SF6 recovery compressor to influence inflation.
In this embodiment, to ensure that the SF6 recovers the purity of the charge gas output by the compressor, the SF6 recovers the outlet end filtration system of the compressor. Inflation gas output by the SF6 recovery compressor is filtered through the filtering system, and purity of the inflation gas output by the SF6 recovery compressor is guaranteed. The filtering system can adopt the existing filtering system, such as activated carbon filtering and the like.
in the embodiment, in order to ensure the drying of the inflation gas output by the SF6 recovery compressor, the air outlet end of the SF6 recovery compressor is provided with a drying heater. The inflation gas output by the SF6 recovery compressor is filtered by the drying heater, so that the inflation gas output by the SF6 recovery compressor is ensured to be dried.
It should be noted that, although the above embodiments have been described herein, the scope of the present invention is not limited thereby. Therefore, based on the innovative concept of the present invention, the changes and modifications of the embodiments described herein, or the equivalent structure or equivalent process changes made by the contents of the specification and the drawings of the present invention, directly or indirectly apply the above technical solutions to other related technical fields, all included in the protection scope of the present invention.
Claims (5)
1. an SF6 gas recovery device with a gas cooling function is characterized by comprising a gas inlet, a gas outlet, a vacuum pump, a vacuum gauge, a pressure container, a manual ball valve V1-V7 and a condenser;
the air outlet is connected with SF6 electrical equipment and is connected with the air inlet through an air conveying hose, and the manual ball valve V2 and the manual ball valve are arranged on the air conveying hose between the air inlet and the air outlet;
The air exhaust end of the vacuum pump is connected with an air hose between the manual ball valve V2 and the manual ball valve V3 through an air hose, and the manual ball valve V1 is arranged at the air exhaust end of the vacuum pump;
The vacuum gauge is connected with a gas transmission hose between the manual ball valve V2 and the manual ball valve V3 through the gas transmission hose;
The pressure container is connected to the GIS tank body through an air hose, the manual ball valve V7 is arranged at the air inlet end of the air hose between the pressure container and the GIS tank body, and the manual ball valve V4 is arranged at the air outlet end of the air hose between the pressure container and the GIS tank body;
one end of the condenser is connected to the pressure container through a manual ball valve V5, and the other end of the condenser is connected to the GIS tank body through a manual ball valve V6.
2. the SF6 gas recovery device with gas cooling function of claim 1, further comprising an SF6 recovery compressor and a pressure reducing valve, wherein the air exhaust end of the SF6 recovery compressor is connected to the pressure vessel through the pressure reducing valve and a manual ball valve V8, and the air outlet end is connected to the air pipe between the manual ball valve V4 and the manual ball valve V7.
3. The SF6 gas recovery device with gas cooling function of claim 2, wherein a check valve is provided at the outlet of the SF6 recovery compressor.
4. The SF6 gas recovery device with gas cooling function of claim 2, wherein the SF6 recovery compressor's outlet end filtration system.
5. The SF6 gas recovery device with gas cooling function of claim 2, wherein a dry heater is provided at the outlet end of the SF6 recovery compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920515940.2U CN209744060U (en) | 2019-04-16 | 2019-04-16 | SF6 gas recovery device with gas cooling function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920515940.2U CN209744060U (en) | 2019-04-16 | 2019-04-16 | SF6 gas recovery device with gas cooling function |
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| CN209744060U true CN209744060U (en) | 2019-12-06 |
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| CN201920515940.2U Active CN209744060U (en) | 2019-04-16 | 2019-04-16 | SF6 gas recovery device with gas cooling function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114857492A (en) * | 2022-04-19 | 2022-08-05 | 安徽新力电业科技咨询有限责任公司 | Sectional type pressurization and continuous storage SF 6 On-site gas recovery device |
-
2019
- 2019-04-16 CN CN201920515940.2U patent/CN209744060U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114857492A (en) * | 2022-04-19 | 2022-08-05 | 安徽新力电业科技咨询有限责任公司 | Sectional type pressurization and continuous storage SF 6 On-site gas recovery device |
| CN114857492B (en) * | 2022-04-19 | 2023-10-31 | 安徽新力电业科技咨询有限责任公司 | Sectional type supercharged and continuously stored SF 6 Gas on-site recovery device |
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