CN210979329U - SF (sulfur hexafluoride)6Gas treatment auxiliary device - Google Patents
SF (sulfur hexafluoride)6Gas treatment auxiliary device Download PDFInfo
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- CN210979329U CN210979329U CN201921572628.3U CN201921572628U CN210979329U CN 210979329 U CN210979329 U CN 210979329U CN 201921572628 U CN201921572628 U CN 201921572628U CN 210979329 U CN210979329 U CN 210979329U
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Abstract
The utility model relates to a process SF6Auxiliary means for the gas, comprising a gas chamber, a plurality of SF's being connected to the gas chamber6Gas cylinders, SF6The gas cylinders are symmetrically distributed on two sides of the gas cavity and are SF6The valve of the gas cylinder body is communicated with the gas cavity through a DN10 high-pressure valve, and one side of one end of the gas cavity is communicated with SF through a first DN20 high-pressure valve6Gas treatment plant connection, SF6The gas treatment device is connected with one end of the four-way joint through a second DN20 high-pressure valve, and the other end of the four-way joint is communicated with the other side of one end of the gas cavity through a third DN20 high-pressure valve; one of the remaining two ends of the four-way joint and SF6The control system of the air chamber of the electrical equipment is connected, and the other end of the air chamber of the electrical equipment is connected with the tee joint through a DN10 high-pressure valveOne end of the connector is connected, the second end of the three-way connector is connected with a pressure reducing valve, and the pressure reducing valve is connected with the air cavity through a DN10 high-pressure valve. The utility model provides high gas quality management and control level has reduced greenhouse gas emission and high-pressure line joint connection screw thread wearing and tearing, safe and reliable, province cost.
Description
Technical Field
The utility model relates to an auxiliary device, especially a SF6Gas processing auxiliary device.
Background
SF6The gas is usually stored in 50 kg units in steel cylinders with a dead weight of 50 kg, and the total weight reaches more than 100 kg, so that a large amount of cylinders are required to store the gas. SF of transformer substation, converter station, switch station and the like6The number of the gas cylinders of the gas insulation equipment is also larger.
During maintenance, in order to reserve sufficient time for disassembling, assembling and maintaining equipment, SF is firstly used6The gas treatment device recovers the gas and presses the gas into each steel gas cylinder one by one; recovering all gas and using SF6The gas treatment device purifies the recovered gas and fills the gas into each air bottle which is vacuumized. During inflation, the qualified SF in each steel gas cylinder is compared and monitored by a high-precision pressure gauge6The gas is filled into the gas chamber through a pressure reducing valve; when the bottle is changed, the valve is opened slightly before the pipeline is connected, the pipeline connection is completed under slight positive pressure, then the valve is opened again to inflate, and the process is circulated. When inflated, SF6When the gas absorbs heat and is converted from liquid to gas, the gas can be frozen and condensed, water molecules can easily invade into the gas flow, and particularly when the micro-positive pressure is connected with the gas pipe, qualified gas is exposed in the air, so that the quality index of the qualified gas is reduced. The conventional method also has the following problems: the gas treatment time is longer, the operation frequency of replacing a gas cylinder to connect a high-pressure pipeline is increased, the screw thread is easy to damage by screwing the high-pressure pipeline joint with positive pressure, the greenhouse gas emission is increased, the gas treatment quality is reduced, and particularly the gas filling quality control level in the negative pressure (high vacuum) stage of the gas chamber is reduced.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a SF6The gas treatment auxiliary device is mainly developed aiming at saving time, reducing greenhouse gas emission, improving gas treatment quality control level and the like under the working conditions of more steel gas cylinders, larger amount of gas to be treated, pressure of a high-pressure pipeline, more disassembly and assembly frequency and the like. The auxiliary device takes 10 gas cylinders as a group and can be matched with SF after one-time connection6The gas processing device carries out pipeline vacuum pumping, fills the recycled gas into a gas cylinder and a plurality of cylindersThe gas cylinder is filled with gas into the gas chamber. The time for repeatedly disassembling and assembling the high-pressure pipeline joint under pressure is centralized to be completed at the same moment, the operation time is shortened, the operation frequency is reduced, the emission of greenhouse gas is also reduced, and particularly, the gas filling quality control level and the like in the negative pressure (high vacuum) stage of the gas chamber are improved. SF6The gas treatment auxiliary device is safe, reliable, time-saving, labor-saving and cost-saving, is simple to manufacture, can be recycled, and is convenient to store and the like, and the measuring meter is centralized.
The purpose of the utility model is realized through the following technical scheme:
SF (sulfur hexafluoride)6Gas processing auxiliary device, comprising a gas chamber, a plurality of SF connected with the gas chamber6Gas cylinders, SF6The gas cylinders are distributed on two sides of the gas cavity and are SF6The valve of the gas cylinder body is communicated with the gas cavity through a DN10 high-pressure valve, and one side of one end of the gas cavity is communicated with SF through a first DN20 high-pressure valve6Gas treatment plant connection, SF6The gas treatment device is connected with one end of the four-way joint through a second DN20 high-pressure valve, and the other end of the four-way joint is communicated with the other side of one end of the gas cavity through a third DN20 high-pressure valve; one of the remaining two ends of the four-way joint and SF6The control system of the air chamber of the electrical equipment is connected, the other end of the air chamber of the electrical equipment is connected with one end of a three-way joint through a DN10 high-pressure valve, the second end of the three-way joint is connected with a pressure reducing valve, and the pressure reducing valve is connected with the air chamber through a DN10 high-pressure valve.
Further, the third end of the three-way joint is connected with a high-precision pressure gauge.
Furthermore, one end of the air cavity is also provided with a standby valve which is connected with the air valve through a stainless steel high-pressure steel pipe.
Furthermore, DN10 high-pressure valve is connected with the air cavity through stainless steel high-pressure steel pipe, SF6The valve of the gas cylinder body is connected with the DN10 high-pressure valve through a polytetrafluoroethylene transparent colorful high-pressure pipe.
Furthermore, DN10 high pressure valve, pressure reducing valve, three-way joint and four-way joint are all connected through stainless steel high pressure pipe, and four-way joint and SF6The control systems of the air chambers of the electrical equipment are connected through steel cage protecting pipes.
Furthermore, the front end of the air cavity is connected with a high-precision vacuum pressure gauge through a high-pressure valve.
Further, the first DN20 high pressure valve is connected with SF6The gas treatment device is connected through a steel protective cage pipe, SF6The gas treatment device is connected with the second DN20 high-pressure valve through a steel cage protection pipe, the second DN20 high-pressure valve is connected with the four-way joint through a stainless steel high-pressure pipe, and the other end of the four-way joint is connected with the third DN20 high-pressure valve through a stainless steel high-pressure pipe.
Compared with the prior art, the beneficial effects of the utility model are as follows:
(1) the utility model discloses use 10 gas cylinders as a set of, once only connect high-pressure line, can carry out high-pressure line evacuation, compress air to the gas cylinder in following the air chamber. During inflation, the SF6 gas processing device is inflated into the gas chamber in a negative pressure (high vacuum) stage; in the positive pressure stage, under the condition that the monitoring unit is closed, the plurality of bottles are simultaneously filled with qualified gas and the like from the gas bottle into the gas chamber, the whole pipeline is completely closed, the contact of the qualified gas and air is avoided, the gas quality control level is improved, the emission of greenhouse gas is reduced, and the pressure of a high-pressure pipeline joint, the abrasion of a connecting screw thread and the like are reduced.
(2) The utility model discloses a high pressure valve's switching can change the state of certain or some several gas cylinders in ten gas cylinders of group wantonly, can only single bottle pursue the gas filled operating mode before the change, can the many bottles be optionalized and aerify simultaneously in to the air chamber to inflation time has been shortened.
(3) At the malleation stage of aerifing, can be through changing the utility model discloses a branch pipeline goes up the state of both sides high-pressure valve door, realizes monitoring unit's switching.
(4) The utility model discloses safe and reliable, save time, laborsaving, save cost, simple manufacture recycles, and the measurement table meter is concentrated, is convenient for keep etc..
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
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 examples of the present invention, not all examples. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without any creative effort belong to the protection scope of the present invention.
As shown in FIG. 1, SF6The gas processing auxiliary device comprises a gas cavity 4 and 10 SF connected with the gas cavity 46 Gas cylinder 15, SF6The gas cylinders 15 are symmetrically distributed on both sides of the gas cavity 4 and are SF6The valve 2 of the gas cylinder 15 body is communicated with the gas chamber 4 through the DN10 high-pressure valve 1, one side of one end of the gas chamber 4 is communicated with the SF through the first DN20 high-pressure valve 86Gas treatment plant 9 connected, SF6The gas processing device 9 is connected with one end of a four-way joint 14 through a second DN20 high-pressure valve 8, and the other end of the four-way joint 14 is communicated with the other side of one end of the gas cavity 4 through a third DN20 high-pressure valve 8; one of the remaining two ends of the four-way joint 14 is connected to SF6The control system of the air chamber 10 of the electrical equipment is connected, the other end of the air chamber is connected with one end of a three-way joint 7 through a DN10 high-pressure valve 1, the second end of the three-way joint 7 is connected with a pressure reducing valve 5, and the pressure reducing valve 5 is connected with the air chamber 4 through a DN10 high-pressure valve 1.
The third end of the three-way joint 7 is connected with a high-precision pressure gauge 6. One end of the air cavity 4 is also provided with a standby valve 3, and the standby valve 3 is connected with the air valve 4 through a stainless steel high-pressure steel pipe 11. The standby valve 3 adopts a DN10 high-pressure valve and is always in a closed state.
DN10 high-pressure valve 1 is connected with air cavity 4 through stainless steel high-pressure steel pipe 11, SF6The gas cylinder body valve 2 is connected with the DN10 high-pressure valve 1 through a polytetrafluoroethylene transparent colorful high-pressure pipe 12.
In a bypass at one side of the air cavity, DN10 high-pressure valve 1, pressure reducing valve 5, three-way joint 7 and four-way joint 14 are all connected by stainless steel high-pressure pipe 11, and four-way joint 14 is connected with SF6The control systems of the air chambers 10 of the electrical equipment are connected through steel cage protecting pipes 13.
First DN20 high-pressure valve 8 and SF6The gas treatment device 9 is connected through a steel protective cage pipe 13, SF6The gas treatment device 9 is connected with the second DN20 high-pressure valve 8 through a steel protective cage pipe 13, the second DN20 high-pressure valve 8 is connected with the four-way joint 14 through a stainless steel high-pressure pipe 13, and the other end of the four-way joint 14 is connected with the third DN20 high-pressure valve 8 through a stainless steel high-pressure pipe 11. The front end of the air cavity is connected with a high-precision vacuum pressure gauge 16 through a high-pressure valve.
SF of the example6And 15 stainless steel pipelines connected with a high-pressure valve are welded on a stainless steel air cavity of the gas treatment auxiliary device. The high-pressure valve is connected to the stainless steel pipeline interface.
By SF6When the gas processing device recovers gas from the SF6 gas equipment gas chamber into the gas cylinder, the operation is as follows: and respectively connecting 10 high-pressure air pipes to 10 steel gas cylinder interfaces, and closing high-pressure valves at two sides of each monitoring unit (a monitoring unit is composed of a pressure reducing valve, a high-precision pressure gauge and a connected pipeline and the high-pressure valves). Connecting high-pressure gas pipe to SF6 gas equipment gas chamber and SF6The gas processing device interface. And (3) placing the first air bottle on the weighbridge scale, opening the high-pressure valves at two sides of the first air bottle, and closing the high-pressure valves at two sides of the other 9 air bottles. Opening the gas chamber valve of SF6 gas equipment and starting SF6Gas treatment plant, slow start of SF6Gas processing plant high pressure valve. The high-pressure valves on two sides of the first steel gas cylinder are closed when the weight of gas in the cylinder is monitored to 50 kilograms in real time through the weighbridge, meanwhile, the high-pressure valves on two sides of the high-pressure pipeline of the second steel gas cylinder are opened, the weighbridge is placed under the second steel gas cylinder to monitor the weight of the gas, and the process is repeated.
By SF6When the gas treatment device vacuumizes the gas cylinder and the high-pressure pipeline through the device, the operation is as follows: and respectively connecting 10 high-pressure air pipes to 10 steel gas cylinder connectors. Connecting high-pressure gas pipes to SF respectively6Apparatus (gas cell) and SF6The gas processing device interface. All high pressure valves connected to the air cavity and 10 air bottles were opened. The high pressure valve is opened and the high precision vacuum pressure gauge 16 detects the pressure.
Shut down of SF6Valve of the plant (gas chamber), start SF6And (4) vacuumizing the gas treatment device by using a vacuum pump until the pressure is 5Pa, continuously vacuumizing for 10min, closing all valves, and stopping the machine. And the process is circulated.
From the cylinder inwards to SF6When the equipment (air chamber) is filled with qualified gas, the negative pressure (high vacuum) stage is operated as follows: and respectively connecting 10 high-pressure air pipes to 10 steel gas cylinder connectors. Connecting high-pressure gas pipes on the gas chamber to SF respectively6Gas processing apparatus and SF6The equipment (air chamber) interface. And closing the high-pressure valves at the two sides of the other 9 air bottles, and opening the high-pressure valves at the two sides connected with the first air bottle. Opening the high-pressure valves at both sides of the monitoring unit and starting SF6Gas treatment plant, open SF6And (4) opening a valve of the equipment (air chamber) slowly, and circulating the steps until the pressure in the air chamber reaches the micro-positive pressure. The operation of the chamber from slight positive pressure (above 0 pressure) to rated pressure is as follows: and closing the high-pressure valves at two sides of the monitoring unit, opening the high-pressure valves at two sides of the multi-cylinder steel gas cylinder, monitoring the pressure by using a gas chamber body density relay, and opening the monitoring unit to fill the gas into the gas chamber one by one until the rated pressure is reached to close the valves, wherein the process is repeated.
The SF6 gas processing device is a special auxiliary device for SF6 gas processing, which integrates the functions of vacuumizing, recovering, aerating, purifying and the like. Is an existing mature product and is specially used for installation, maintenance and other work of SF6 gas equipment.
SF of the example6The layout of the gas treatment auxiliary device is divided into three devices: the upper platform comprises an air cavity, a high-pressure pipeline interface, a high-pressure valve, a monitoring unit and the like; the middle platform is a coil pipe fixing frame and a special spanner jack; the lower platform is provided with a movable wheel; a frame, a lifting ring, dustproof and rainproof protection and the like are arranged outside the device.
The air cavity of the device is a hollow closed clean cavity, and stainless steel pipes connected with the outside are all welded. 10 stainless steel high-pressure valves of DN10 on the device pass through 10 polytetrafluoroethylene high-pressure transparent tubes and 10 SF respectively6The gas cylinder is connected with the gas chamber of the device, and the state regulation and control are carried out through 10 stainless steel high-pressure valves of DN10 and 10 high-pressure valves carried by the gas cylinder.
The air cavity is also respectively provided with 3 stainless steel high-pressure valves of DN20, one is a four-way valve and SF6The air cavities of the auxiliary gas treatment device are connected, one is a cross joint and SF6The other is SF6Gas chamber and SF for gas processing auxiliary device6The gas processing devices are connected with each other.
The pressure reducing valve and the T-connection lead-out are connected with a stainless steel high-pressure valve with DN10 at two ends of a tee joint of the high-precision pressure gauge respectively, the tee joint connected with the high-precision pressure gauge is connected with a reducing cross through a DN10 stainless steel high-pressure valve, and the other three sides of the reducing cross are connected with an SF four-way valve respectively6Air chamber of electrical equipment, SF6Gas processing apparatus and SF6Gas chambers of gas processing aids, for convenience of functional management, connected to SF6Gas processing apparatus and SF6A DN20 stainless steel high pressure valve is respectively arranged on the branch of the gas chamber of the gas processing auxiliary device. The switching monitoring unit is realized by changing the states of the valves on the two sides of the branch pipeline of the monitoring unit. And comparing the accurate pressure in the monitoring air chamber by using a high-precision pressure gauge.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. SF (sulfur hexafluoride)6The gas processing auxiliary device is characterized in that: comprising an air cavity, a plurality of SFs connected with the air cavity6Gas cylinders, SF6The gas cylinders are distributed on two sides of the gas cavity and are SF6The valve of the gas cylinder body is communicated with the gas cavity through a DN10 high-pressure valve, and one side of one end of the gas cavity is communicated with SF through a first DN20 high-pressure valve6Gas treatment plant connection, SF6The gas treatment device is connected with one end of the four-way joint through a second DN20 high-pressure valve, and the other end of the four-way joint is communicated with the other side of one end of the gas cavity through a third DN20 high-pressure valve; one of the remaining two ends of the four-way joint and SF6The control system of the air chamber of the electrical equipment is connected,the other end of the air cylinder is connected with one end of a three-way joint through a DN10 high-pressure valve, the second end of the three-way joint is connected with a pressure reducing valve, and the pressure reducing valve is connected with the air cavity through a DN10 high-pressure valve.
2. SF according to claim 16The gas processing auxiliary device is characterized in that: the third end of the three-way joint is connected with a high-precision pressure gauge.
3. SF according to claim 16The gas processing auxiliary device is characterized in that: one end of the air cavity is also provided with a standby valve which is connected with the air valve through a stainless steel high-pressure steel pipe.
4. SF according to claim 16The gas processing auxiliary device is characterized in that: DN10 high-pressure valve is connected with the air cavity through stainless steel high-pressure steel pipe, SF6The valve of the gas cylinder body is connected with the DN10 high-pressure valve through a polytetrafluoroethylene transparent colorful high-pressure pipe.
5. SF according to claim 16The gas processing auxiliary device is characterized in that: DN10 high-pressure valve, pressure-reducing valve, three-way joint and four-way joint are all connected by stainless steel high-pressure pipe, and the four-way joint is connected with SF6The control systems of the air chambers of the electrical equipment are connected through steel cage protecting pipes.
6. SF according to claim 16The gas processing auxiliary device is characterized in that: the front end of the air cavity is connected with a high-precision vacuum pressure gauge through a high-pressure valve.
7. SF according to claim 16The gas processing auxiliary device is characterized in that: first DN20 high-pressure valve and SF6The gas treatment device is connected through a steel protective cage pipe, SF6The gas treatment device is connected with a second DN20 high-pressure valve through a steel protective cage pipe, the second DN20 high-pressure valve is connected with a four-way joint through a stainless steel high-pressure pipe, and the other end of the four-way joint is connected with a third connectorThe DN20 high-pressure valve is connected through a stainless steel high-pressure pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921572628.3U CN210979329U (en) | 2019-09-20 | 2019-09-20 | SF (sulfur hexafluoride)6Gas treatment auxiliary device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921572628.3U CN210979329U (en) | 2019-09-20 | 2019-09-20 | SF (sulfur hexafluoride)6Gas treatment auxiliary device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210979329U true CN210979329U (en) | 2020-07-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921572628.3U Active CN210979329U (en) | 2019-09-20 | 2019-09-20 | SF (sulfur hexafluoride)6Gas treatment auxiliary device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210979329U (en) |
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- 2019-09-20 CN CN201921572628.3U patent/CN210979329U/en active Active
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