CN217482511U - SF (sulfur hexafluoride) 6 Efficient recycling and recharging device - Google Patents
SF (sulfur hexafluoride) 6 Efficient recycling and recharging device Download PDFInfo
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Abstract
SF (sulfur hexafluoride) 6 An efficient recycling and recharging device belongs to the SF of a transformer substation 6 The technical field of gas recovery and recharging, and solves the problem that the prior recovery and recharging device has SF (sulfur hexafluoride) during recovery due to the influence of environmental temperature change 6 Incomplete liquefaction of gas and liquid SF present during refilling 6 Incomplete gasification and low efficiency of field operation(ii) a Recovery of SF in situ 6 In the gas stage, a recovery pipeline is designed, and SF is adjusted through a heat exchange fan HR and a cold and heat source device ZL in the recovery pipeline 6 Liquefaction temperature of gas, SF in energy recovery operation 6 Rapidly cooling, liquefying and storing the gas; in situ return of liquid SF 6 Stage, designing recharging pipeline, regulating liquid SF by heat-exchange fan HR and cold-heat source device ZL in recharging pipeline 6 The gasification temperature of the gasification furnace is safe and efficient during the recharging operation; is not affected by environmental temperature changes such as winter, summer, day and night, and region, and SF is recovered 6 Complete liquefaction of gas, liquid SF during refilling 6 And the gasification is complete, and the efficiency of field operation is greatly improved.
Description
Technical Field
The utility model belongs to the SF of transformer substation 6 The technical field of gas recovery and refilling, and relates to SF 6 The efficient recovery recharging device.
Background
In recent years, with the rapid development of global energy internet, a large amount of SF 6 The gas insulation equipment is generally used on ultrahigh voltage, extra-high voltage and totally-enclosed combined electrical appliances. At the same time, with many SF's in our country 6 Increase in operational life of gas-insulated apparatus and SF 6 /N 2 The mixed gas gradually replaces SF 6 SF, a trend of insulating media in electrical equipment 6 The tasks of field recovery and refilling (mostly outdoor and open-air operation) are increased year by year.
At present, the recovery and recharge devices in the existing market have various types and specifications and aim at SF (sulfur hexafluoride) 6 The on-site recovery operation is mostly carried out by liquefying, storing and recovering by adopting a high-pressure liquefying or low-temperature freezing method, but the operation is carried out by SF 6 After compression in the compressor, at an excessive ambient temperature, SF 6 The self temperature is easy to reach or exceed the critical temperature, resulting in SF 6 The gas can not be liquefied or the liquefaction effect is not good, thereby seriously affecting SF 6 Efficiency of the on-site recovery operation.
For SF 6 Recharging operation in situ, requiring storage in SF 6 SF stored in liquid form in a qualified gas storage device 6 The gas is fully gasified and then is backfilled to SF 6 In the gas insulation equipment, the gas is usually recharged by gasifying in or out of the steel cylinder, and SF can be realized by gasifying and recharging in the steel cylinder 6 The gas enters the equipment, but the recharging efficiency is extremely low, the outside of the steel cylinder is gasified and recharged to SF after the liquid flows out from the inverted steel cylinder for heat exchange 6 In gas insulation equipment, two methods of environment heat exchange or electric heating indirect heat exchange are usually adopted, the gasification recharging efficiency outside a steel cylinder is high, the residual gas in the steel cylinder is less, but the environment heat exchange mode is easily influenced by too low field environment temperature, so that the gasification effect is poor, the electric heating indirect heat exchange can be efficiently gasified and recharged without being influenced by the environment temperature, oil or water is conventionally adopted as a conversion medium for heat exchange, so that the safety risk exists to a certain degree, the electric heat conversion efficiency is 1:1, and the liquid SF is in a liquid state 6 The gasification can be completed only by absorbing a large amount of heat, so that the heat exchange efficiency is improved, the safety and environmental protection are realized, and the low-energy heat exchange gasification has important significance in carrying out the recharging operation.
The Chinese utility model patent 'sulfur hexafluoride gas recovery and recharging device' with application number of 200920088732.5 and publication date of 2009, 12 and 23 adopts simple pipeline design to realize the on-site recovery and recharging of sulfur hexafluoride gas, but the device is in SF 6 The liquefaction effect is poor and SF exists during the on-site recovery operation 6 The problem of low efficiency of the on-site recovery operation is in SF 6 Presence of liquid SF during recharging in situ 6 SF destruction caused by incomplete gasification and low temperature 6 Risk of insulating material inside the gas-insulated apparatus.
In view of the above, there is an urgent need for SF 6 The high-efficiency recovery recharging device can be used for quickly cooling, liquefying, storing during recovery operation, safely and efficiently gasifying and recharging during recharging operation, can also reduce the engineering field operation cost, and is suitable for fault maintenance and expansion of ultrahigh-voltage and extra-high-voltage electrical equipment and fully-closed combined electrical appliancesConstruction and other projects which need large air quantity to be recovered and charged provide effective means.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to design a SF 6 An efficient recovery and recharge device for solving the problem that the prior recovery and recharge device has SF during recovery due to the influence of the change of the environmental temperature 6 Incomplete liquefaction of gas and liquid SF present during refilling 6 The gasification is incomplete, and the field operation efficiency is low.
The utility model discloses a solve above-mentioned technical problem through following technical scheme:
SF (sulfur hexafluoride) 6 High-efficient recovery recharging device includes: a recovery pipeline and a recharge pipeline; the recovery pipeline includes: the system comprises a first manual valve V1, a first pressure gauge P1, a first electromagnetic valve MV1, a flow meter F1, a first filter PF1, a parallel air inlet pipeline, a buffer tank BT, a first safety valve SV1, a second pressure gauge P2, a pressurization pipeline, a fifth electromagnetic valve MV5, a heat exchange fan HR, a cold and heat source device ZL, a fifth pressure gauge P5 and a fourth manual valve V4; the refill line includes: a third manual valve V3, an eighth electromagnetic valve MV8, a second filter PF2, a second reducing valve RV2 and a sixth electromagnetic valve MV 6;
one end of the first manual valve V1 is used as a first port of the recycling and recharging device, the other end of the first manual valve V1 is hermetically connected with one end of a first electromagnetic valve MV1, the other end of the first electromagnetic valve MV1 is hermetically connected with one end of a flow meter F1, the other end of the flow meter F1 is hermetically connected with the input end of a first filter PF1, the output end of the first filter PF1 is hermetically connected with the input end of a parallel air inlet pipeline, the output end of the parallel air inlet pipeline is hermetically connected with the input end of a buffer tank BT, the output end of the buffer tank BT is hermetically connected with the input end of a booster pipeline, the output end of the booster pipeline is hermetically connected with one end of a fifth electromagnetic valve MV5, the other end of a fifth electromagnetic valve MV5 is hermetically connected with one end of a heat exchange fan HR, the other end of the heat exchange fan HR is hermetically connected with one end of a cold and heat source device ZL, and the other end of the cold and heat source device ZL is hermetically connected with one end of a fourth manual valve V4, the other end of the fourth manual valve V4 is used as a second port of the recovery and recharge device; a first pressure gauge P1 is sealingly mounted between the first manual valve V1 and the first solenoid valve MV 1; a fifth pressure gauge P5 is hermetically arranged between the cold and heat source device ZL and the fourth manual valve V4, and the second pressure gauge P2 and the first safety valve SV1 are hermetically arranged on the buffer tank BT;
one end of the third manual valve V3 is hermetically arranged between the fifth electromagnetic valve MV5 and the heat exchange fan HR, and the other end of the third manual valve V3 is used as a third port of the recovery and recharging device; one end of an eighth electromagnetic valve MV8 is hermetically connected between the fifth electromagnetic valve MV5 and the heat exchange fan HR, the other end of the eighth electromagnetic valve MV8 is hermetically connected with the input end of a second filter PF2, the input end of the second filter PF2 is also hermetically connected between a cold and heat source device ZL and a fourth manual valve V4, the output end of the second filter PF2 is hermetically connected with the input end of a second reducing valve RV2, the output end of the second reducing valve RV2 is hermetically connected with one end of a sixth electromagnetic valve MV6, and the other end of the sixth electromagnetic valve MV6 is hermetically connected between a flow meter F1 and the first filter PF 1.
The SF of the utility model 6 Recovery of SF in situ 6 In the gas stage, a recovery pipeline is designed, and SF is adjusted through a heat exchange fan HR and a cold and heat source device ZL in the recovery pipeline according to the change of the environmental temperature 6 Liquefaction temperature of gas, SF in energy recovery operation 6 Rapidly cooling, liquefying and storing the gas; in situ return of liquid SF 6 Stage, designing recharging pipeline, regulating liquid SF by heat exchange fan HR and cold and heat source device ZL in recharging pipeline according to change of environmental temperature 6 The gasification temperature is safe and efficient during recharging operation; is not affected by environmental temperature changes such as winter, summer, day and night, and region, and SF is recovered 6 Complete liquefaction of gas, liquid SF during refilling 6 Complete gasification, greatly improves the efficiency of field operation.
Further, the parallel air intake circuit comprises: a second electromagnetic valve MV2, a first reducing valve RV1, a third electromagnetic valve MV3, a fourth electromagnetic valve MV4, a second compressor YS2 and a second electric valve DV 2; one end of the second electromagnetic valve MV2 is hermetically connected with the output end of the first filter PF1, the other end of the second electromagnetic valve MV2 is hermetically connected with one end of a first pressure reducing valve RV1, and the other end of the first pressure reducing valve RV1 is hermetically connected with the input end of the buffer tank BT; one end of a third electromagnetic valve MV3 is hermetically connected between the first filter PF1 and the second electromagnetic valve MV2, and the other end of the third electromagnetic valve MV3 is hermetically connected between a first pressure reducing valve RV1 and the input end of the buffer tank BT; one end of the fourth electromagnetic valve MV4 is hermetically connected between the first filter PF1 and the second electromagnetic valve MV2, the other end of the fourth electromagnetic valve MV4 is hermetically connected with the input end of the second compressor YS2, the output end of the second compressor YS2 is hermetically connected with one end of the second electric valve DV2, and the other end of the second electric valve DV2 is hermetically connected between the first reducing valve RV1 and the input end of the buffer tank BT.
Further, the pressurization pipeline comprises: a third compressor YS3, a first check valve CV1, a fourth compressor YS4, a second check valve CV2, a third pressure gauge P3 and a second safety valve SV 2; the output end of the buffer tank BT is simultaneously in sealing connection with the input end of a third compressor YS3 and the input end of a fourth compressor YS4, the output end of the third compressor YS3 is in sealing connection with the input end of a first one-way valve CV1, the output end of the fourth compressor YS4 is in sealing connection with the input end of a second one-way valve CV2, the output end of the first one-way valve CV1 and the output end of the second one-way valve CV2 are simultaneously in sealing connection with one end of a fifth electromagnetic valve MV5, and a third pressure gauge P3 and a second safety valve SV2 are both hermetically installed between the first one-way valve CV1 and the fifth electromagnetic valve MV 5.
Further, the SF 6 The high-efficient recharge device that retrieves still includes: residual gas recovery pipeline, residual gas recovery pipeline include: a seventh electromagnetic valve MV7, an air storage tank AT, a fourth pressure gauge P4 and a third electric valve DV 3; one end of the seventh electromagnetic valve MV7 is hermetically connected between the output end of the supercharging pipeline and the fifth electromagnetic valve MV5, the other end of the seventh electromagnetic valve MV7 is hermetically connected with the input end of the air storage tank AT, the output end of the air storage tank AT is hermetically connected with one end of the third electromagnetic valve DV3, the other end of the third electromagnetic valve DV3 is hermetically connected between the flow meter F1 and the first filter PF1, and the fourth pressure gauge P4 is hermetically installed on the air storage tank AT.
Further, the SF 6 The high-efficient recharge device that retrieves still includes: an evacuation line, the evacuation line comprising: the second manual valve V2, the vacuum gauge ZK, the first electric valve DV1 and the first compressor YS 1; one end of the second manual valve V2 is hermetically connected between the first manual valve V1 and the first electromagnetic valve MV1, the other end of the second manual valve V2 is hermetically connected with one end of the first electric valve DV1, the other end of the first electric valve DV1 is hermetically connected with the input end of the first compressor YS1, the output end of the first compressor YS1 is used as an emptying port of the recycling and recharging device, and the vacuum gauge ZK is hermetically installed between the second manual valve V2 and the first electric valve DV 1.
The utility model has the advantages that:
1) the SF of the utility model 6 High efficiency recovery recharging device for on-site recovery of SF 6 In the gas stage, a recovery pipeline is designed, and SF is adjusted through a heat exchange fan HR and a cold and heat source device ZL in the recovery pipeline according to the change of the environmental temperature 6 Liquefaction temperature of gas, SF in energy recovery operation 6 Rapidly cooling, liquefying and storing the gas; in situ return of liquid SF 6 Stage, designing refilling pipeline, regulating liquid SF by heat exchange fan HR and cold-heat source device ZL in refilling pipeline according to change of environmental temperature 6 The gasification temperature of the gasification furnace is safe and efficient during the recharging operation; is not affected by environmental temperature changes such as winter, summer, day and night, and region, and SF is recovered 6 Complete liquefaction of gas, liquid SF during refilling 6 Complete gasification, greatly improves the efficiency of field operation.
2) By designing the parallel air inlet pipeline, different air inlet paths are selected according to the pressure value of the first pressure gauge P1, and SF is increased 6 The gas recovery rate saves the cost;
3) after recovery, due to the presence of SF in the device 6 Residual gas, SF on the one hand 6 Residual gas can not be directly emptied, the environment can be polluted, on the other hand, the residual gas in the pipeline can be recovered in time and the expansion pressure can be increased, certain potential safety hazards exist, and by designing the residual gas recovery pipeline, the purpose of recovering SF (sulfur hexafluoride) is achieved 6 Zero emission in the gas process.
Drawings
FIG. 1 shows an SF according to a first embodiment of the present invention 6 Structure diagram of high-efficient recovery refilling device.
Detailed Description
To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the embodiments of the present invention are clearly and completely described below in combination with the technical solution of the embodiments of the present invention, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The technical solution of the present invention is further described with reference to the drawings and specific embodiments:
example one
As shown in FIG. 1, a SF 6 High-efficient recovery recharging device includes: a first manual valve V1, a second manual valve V2, a third manual valve V3 and a fourth manual valve V4; a first solenoid valve MV1, a second solenoid valve MV2, a third solenoid valve MV3, a fourth solenoid valve MV4, a fifth solenoid valve MV5, a sixth solenoid valve MV6, a seventh solenoid valve MV7 and an eighth solenoid valve MV 8; a first pressure relief valve SV1, a second pressure relief valve SV 2; a first electric valve DV1, a second electric valve DV2 and a third electric valve DV 3; a first pressure reducing valve RV1, a second pressure reducing valve RV 2; a first one-way valve CV1, a second one-way valve CV 2; a first pressure gauge P1, a second pressure gauge P2, a fourth pressure gauge P4, a third pressure gauge P3, a fifth pressure gauge P5; a first compressor YS1, a second compressor YS2, a third compressor YS3, and a fourth compressor YS 4; a first filter PF1, a second filter PF 2; the system comprises a vacuum gauge ZK, a flow meter F1, a gas storage tank AT, a buffer tank BT, a heat exchange fan HR and a cold and heat source device ZL.
One end of a first manual valve V1 is used as a first port of the recycling and recharging device, the other end of the first manual valve V1 is connected with one end of a first electromagnetic valve MV1 in a sealing way through a pipeline, the other end of the first electromagnetic valve MV1 is connected with one end of a flow meter F1 in a sealing way through a pipeline, the other end of the flow meter F1 is connected with the input end of a first filter PF1 in a sealing way through a pipeline, the output end of the first filter PF1 is connected with one end of a second electromagnetic valve MV2 in a sealing way through a pipeline, the other end of a second electromagnetic valve MV2 is connected with one end of a first reducing valve RV1 in a sealing way through a pipeline, the other end of the first reducing valve RV1 is connected with the input end of the buffer tank BT in a sealing way, one end of a third electromagnetic valve MV3 is connected with the pipeline between the first filter PF1 and the second electromagnetic valve MV2 in a sealing way, the other end of the third electromagnetic valve MV3 is connected with the pipeline between the RV1 and the input end of the buffer tank BT in a sealing way, one end of a fourth solenoid valve MV4 is hermetically connected on a pipeline between the first filter PF1 and the second solenoid valve MV2, the other end of the fourth solenoid valve MV4 is hermetically connected with the input end of a second compressor YS2 through a pipeline, the output end of the second compressor YS2 is hermetically connected with one end of a second electric valve DV2 through a pipeline, the other end of the second electric valve DV2 is hermetically connected on a pipeline between a first pressure reducing valve RV1 and the input end of a buffer tank BT, the output end of the buffer tank BT is simultaneously connected with the input end of a third compressor YS3 and the input end of the fourth compressor YS4 through pipelines, the output end of the third compressor YS3 is hermetically connected with the input end of a first check valve CV1 through a pipeline, the output end of the fourth compressor YS4 is hermetically connected with the input end of a second check valve CV2 through a pipeline, the output end of the first check valve CV1 and the output end of the second check valve CV2 are simultaneously hermetically connected with one end of a fifth solenoid valve MV5 through pipelines, the other end of the fifth electromagnetic valve MV5 is hermetically connected with one end of a heat exchange fan HR through a pipeline, the other end of the heat exchange fan HR is hermetically connected with one end of a cold and heat source device ZL through a pipeline, the other end of the cold and heat source device ZL is hermetically connected with one end of a fourth manual valve V4 through a pipeline, and the other end of the fourth manual valve V4 is used as a second port of the recycling and recharging device; one end of a third manual valve V3 is hermetically arranged on a pipeline between the fifth electromagnetic valve MV5 and the heat exchange fan HR, and the other end of the third manual valve V3 is used as a third port of the recovery and recharging device; a first pressure gauge P1 is sealingly mounted on the conduit between the first manual valve V1 and the first solenoid valve MV 1; the second pressure gauge P2 and the first safety valve SV1 are hermetically arranged on the buffer tank BT; a third pressure gauge P3 and a second safety valve SV2 are both sealingly mounted on the conduit between the first check valve CV1 and the fifth solenoid valve MV 5; the fifth pressure gauge P5 is hermetically installed on a pipe between the cold/heat source device ZL and the fourth manual valve V4.
One end of the second manual valve V2 is hermetically connected to a pipeline between the first manual valve V1 and the first electromagnetic valve MV1, the other end of the second manual valve V2 is hermetically connected with one end of the first electric valve DV1 through a pipeline, the other end of the first electric valve DV1 is hermetically connected with the input end of the first compressor YS1 through a pipeline, the output end of the first compressor YS1 is used as an emptying port of the recycling and recharging device, and the vacuum gauge ZK is hermetically installed on a pipeline between the second manual valve V2 and the first electric valve DV 1.
One end of an eighth electromagnetic valve MV8 is hermetically connected to a pipeline between the fifth electromagnetic valve MV5 and the heat exchange fan HR, the other end of the eighth electromagnetic valve MV8 is hermetically connected with the input end of a second filter PF2 through a pipeline, the input end of the second filter PF2 is also hermetically connected between a cold and heat source device ZL and a fourth manual valve V4 through a pipeline, the output end of the second filter PF2 is hermetically connected with the input end of a second reducing valve RV2 through a pipeline, the output end of the second reducing valve RV2 is hermetically connected with one end of a sixth electromagnetic valve MV6 through a pipeline, and the other end of the sixth electromagnetic valve MV6 is hermetically connected to a pipeline between a flow meter F1 and the first filter PF 1.
One end of the seventh electromagnetic valve MV7 is hermetically connected to a pipeline between the first one-way valve CV1 and the fifth electromagnetic valve MV5, the other end of the seventh electromagnetic valve MV7 is hermetically connected to the input end of the air storage tank AT through a pipeline, the output end of the air storage tank AT is hermetically connected to one end of the third electromagnetic valve DV3 through a pipeline, the other end of the third electromagnetic valve DV3 is hermetically connected to a pipeline between the flow meter F1 and the first filter PF1, and the fourth pressure gauge P4 is hermetically installed on the air storage tank AT.
The working flow of the device is as follows:
1. recovery function of the device
Open the first manual valve V1, the first solenoid valve MV1, SF 6 After the gas sequentially flows through the first manual valve V1, the first electromagnetic valve MV1, the flow meter F1 and the first filter PF1, an air inlet path is selected according to the pressure value of the first pressure gauge P1：
When P1 is more than or equal to 0.5MPa, the second electromagnetic valve MV2 is opened, SF 6 The gas flows through an air inlet path formed by the second electromagnetic valve MV2 and the first reducing valve RV1 and then enters the buffer tank BT;
when 0.1MPa < P1 < 0.5MPa, the second electromagnetic valve MV2 and the third electromagnetic valve MV3 are opened simultaneously, SF 6 The gas simultaneously flows through an air inlet path formed by the second electromagnetic valve MV2 and the first reducing valve RV1 and an air inlet path formed by the third electromagnetic valve MV3 and then enters the buffer tank BT;
when P1 is less than or equal to 0.1MPa, the fourth electromagnetic valve MV4 and the second electric valve DV2 are opened, the second compressor YS2 is started, and SF 6 The gas flows through an air inlet path formed by the fourth electromagnetic valve MV4 and the second electric valve DV2 of the second compressor YS2 and then enters the buffer tank BT;
opening the fifth solenoid valve MV5, and starting the third compressor YS3 or the fourth compressor YS4, SF 6 After passing through the first check valve CV1 or the second check valve CV2, the gas passes through the fifth electromagnetic valve MV5, enters the heat exchange fan HR for first heat dissipation and temperature reduction, and then enters the cold and heat source device ZL for second temperature reduction and liquefaction to form liquid SF 6 Finally, the fourth manual valve V4 is opened, and the SF in liquid state is discharged through the fourth manual valve V4 6 After the recovery, the first manual valve V1 and the fourth manual valve V4 are closed.
2. Residual gas recovery function of device
After recovery, due to the presence of SF in the device 6 Residual gas, SF 6 The residual gas cannot be directly discharged, and the environment is polluted, so that SF is required 6 Recovering residual gas, opening a seventh electromagnetic valve MV7, starting a third compressor YS3 or a fourth compressor YS4, and recovering SF in the device 6 Residual air sequentially passes through a second filter PF2, a second pressure reducing valve RV2, a sixth electromagnetic valve MV6, a first filter PF1, an air inlet path, a buffer tank BT, a third compressor YS3 or a fourth compressor YS4 and a seventh electromagnetic valve MV7 to enter an air storage tank AT, when the pressure of a fifth pressure gauge P5 reaches 0.15MPa, the third compressor YS3 or the fourth compressor YS4 is closed, all valves are closed, and SF is controlled by the control system 6 And finishing the recovery of residual gas.
3. Evacuation function of the device
In recharging SF 6 Before, vacuumizing the device, closing the first manual valve V1, the third manual valve V3 and the fourth manual valve V4, opening all the other valves and starting the first compressor YS1, vacuumizing the device, closing the first compressor YS1 and all the valves when the numerical value of the flow meter F1 reaches a qualified value, and finishing the vacuumizing of the device.
4. Recharging function of the device
1) When the outside temperature is higher, the liquid SF in the steel cylinder 6 Can be completely vaporized by the outside temperature, and at the moment, the first manual valve V1, the third manual valve V3, the first electromagnetic valve MV1, the sixth electromagnetic valve MV6 and the eighth electromagnetic valve MV8 are opened, and the liquid SF is added 6 And when the first pressure gauge P1 detects that the pressure in the gas using device meets the requirement, the third manual valve V3 is closed, and the recharging is stopped.
2) When the outside temperature is low, the liquid SF in the steel cylinder 6 Can not be gasified by the outside temperature, and at the moment, the liquid SF needs to be heated to be gasified 6 When the gas is completely gasified, the first manual valve V1, the third manual valve V3, the first electromagnetic valve MV1 and the sixth electromagnetic valve MV6 are opened, and the liquid SF 6 The gas is completely gasified after being sequentially heated by the heat exchange fan HR and the cold and heat source device ZL, and then is charged into the gas using device through the second filter PF2, the second reducing valve RV2, the sixth electromagnetic valve MV6, the flow meter F1, the first electromagnetic valve MV1 and the first manual valve V1, and when the first pressure gauge P1 detects that the pressure in the gas using device meets the requirement, the third manual valve V3, the heat exchange fan HR and the cold and heat source device ZL are closed, and the recharging is stopped.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (5)
1. SF (sulfur hexafluoride) 6 High-efficient recovery recharging device, its characterized in that includes: a recovery pipeline and a recharge pipeline; the recovery pipeline includes: a first manual valve V1, a first pressure gauge P1, a first electromagnetic valve MV1, a flow meter F1, a first filter PF1, a parallel air inlet pipe, a buffer tank BT, a first safety valve SV1, a second pressure gauge P2, a pressure boost pipe, a fifth electromagnetic valve MV5, a heat exchange fan HR, a cold and heat source device ZL, a fifth pressure gauge P5, and a fourth manual valve V4; the refill line includes: a third manual valve V3, an eighth electromagnetic valve MV8, a second filter PF2, a second reducing valve RV2 and a sixth electromagnetic valve MV 6;
one end of the first manual valve V1 is used as a first port of the recycling and recharging device ZL, the other end of the first manual valve V1 is connected with one end of a first electromagnetic valve MV1 in a sealing mode, the other end of the first electromagnetic valve MV1 is connected with one end of a flow meter F1 in a sealing mode, the other end of the flow meter F1 is connected with the input end of a first filter PF1 in a sealing mode, the output end of the first filter PF1 is connected with the input end of a parallel air inlet pipeline in a sealing mode, the output end of the parallel air inlet pipeline is connected with the input end of a buffer tank BT in a sealing mode, the output end of the buffer tank BT is connected with the input end of a boosting pipeline in a sealing mode, the output end of the boosting pipeline is connected with one end of a fifth electromagnetic valve MV5 in a sealing mode, the other end of a fifth electromagnetic valve MV5 is connected with one end of a heat exchange fan HR in a sealing mode, the other end of the heat source device HR is connected with one end of a fourth manual valve V4 in a sealing mode, the other end of the fourth manual valve V4 is used as a second port of the recovery and recharging device; a first pressure gauge P1 is sealingly mounted between the first manual valve V1 and the first solenoid valve MV 1; a fifth pressure gauge P5 is hermetically arranged between the cold and heat source device ZL and the fourth manual valve V4, and the second pressure gauge P2 and the first safety valve SV1 are hermetically arranged on the buffer tank BT;
one end of the third manual valve V3 is hermetically arranged between the fifth electromagnetic valve MV5 and the heat exchange fan HR, and the other end of the third manual valve V3 is used as a third port of the recovery and recharging device; one end of an eighth electromagnetic valve MV8 is hermetically connected between the fifth electromagnetic valve MV5 and the heat exchange fan HR, the other end of the eighth electromagnetic valve MV8 is hermetically connected with the input end of a second filter PF2, the input end of the second filter PF2 is also hermetically connected between a cold and heat source device ZL and a fourth manual valve V4, the output end of the second filter PF2 is hermetically connected with the input end of a second reducing valve RV2, the output end of the second reducing valve RV2 is hermetically connected with one end of a sixth electromagnetic valve MV6, and the other end of the sixth electromagnetic valve MV6 is hermetically connected between a flow meter F1 and the first filter PF 1.
2. SF according to claim 1 6 The efficient recycling and recharging device is characterized in that the parallel air inlet pipeline comprises: a second electromagnetic valve MV2, a first reducing valve RV1, a third electromagnetic valve MV3, a fourth electromagnetic valve MV4, a second compressor YS2 and a second electric valve DV 2; one end of the second electromagnetic valve MV2 is hermetically connected with the output end of the first filter PF1, the other end of the second electromagnetic valve MV2 is hermetically connected with one end of a first pressure reducing valve RV1, and the other end of the first pressure reducing valve RV1 is hermetically connected with the input end of the buffer tank BT; one end of a third electromagnetic valve MV3 is hermetically connected between the first filter PF1 and the second electromagnetic valve MV2, and the other end of the third electromagnetic valve MV3 is hermetically connected between a first pressure reducing valve RV1 and the input end of the buffer tank BT; one end of the fourth electromagnetic valve MV4 is hermetically connected between the first filter PF1 and the second electromagnetic valve MV2, the other end of the fourth electromagnetic valve MV4 is hermetically connected with the input end of the second compressor YS2, the output end of the second compressor YS2 is hermetically connected with one end of the second electric valve DV2, and the other end of the second electric valve DV2 is hermetically connected between the first reducing valve RV1 and the input end of the buffer tank BT.
3. SF according to claim 1 6 The efficient recycling and recharging device is characterized in that the pressurizing pipeline comprises: a third compressor YS3, a first check valve CV1, a fourth compressor YS4, a second check valve CV2, a third pressure gauge P3 and a second safety valve SV 2; the output end of the buffer tank BT is simultaneously connected with the input end of the third compressor YS3 and the fourth compressionThe input end of machine YS4 is connected in a sealing mode, the output end of third compressor YS3 is connected with the input end of first check valve CV1 in a sealing mode, the output end of fourth compressor YS4 is connected with the input end of second check valve CV2 in a sealing mode, the output end of first check valve CV1 and the output end of second check valve CV2 are simultaneously connected with one end of fifth electromagnetic valve MV5 in a sealing mode, and third pressure gauge P3 and second safety valve SV2 are both installed between first check valve CV1 and fifth electromagnetic valve MV5 in a sealing mode.
4. SF according to claim 1 6 High-efficient recovery recharging device, its characterized in that still includes: residual gas recovery pipeline, residual gas recovery pipeline include: a seventh electromagnetic valve MV7, an air storage tank AT, a fourth pressure gauge P4 and a third electric valve DV 3; one end of the seventh electromagnetic valve MV7 is hermetically connected between the output end of the pressurization pipeline and the fifth electromagnetic valve MV5, the other end of the seventh electromagnetic valve MV7 is hermetically connected with the input end of the air storage tank AT, the output end of the air storage tank AT is hermetically connected with one end of the third electric valve DV3, the other end of the third electric valve DV3 is hermetically connected between the flow meter F1 and the first filter PF1, and the fourth pressure gauge P4 is hermetically installed on the air storage tank AT.
5. SF according to claim 1 6 High-efficient recovery recharging device, its characterized in that still includes: an evacuation line, the evacuation line comprising: the second manual valve V2, the vacuum gauge ZK, the first electric valve DV1 and the first compressor YS 1; one end of the second manual valve V2 is hermetically connected between the first manual valve V1 and the first electromagnetic valve MV1, the other end of the second manual valve V2 is hermetically connected with one end of the first electric valve DV1, the other end of the first electric valve DV1 is hermetically connected with the input end of the first compressor YS1, the output end of the first compressor YS1 is used as an emptying port of the recycling and recharging device, and the vacuum gauge ZK is hermetically installed between the second manual valve V2 and the first electric valve DV 1.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220903796.1U CN217482511U (en) | 2022-04-19 | 2022-04-19 | SF (sulfur hexafluoride) 6 Efficient recycling and recharging device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220903796.1U CN217482511U (en) | 2022-04-19 | 2022-04-19 | SF (sulfur hexafluoride) 6 Efficient recycling and recharging device |
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