CN217483024U - For SF 6 Heat exchange system of gas recovery and recharging device - Google Patents
For SF 6 Heat exchange system of gas recovery and recharging device Download PDFInfo
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- CN217483024U CN217483024U CN202220910721.6U CN202220910721U CN217483024U CN 217483024 U CN217483024 U CN 217483024U CN 202220910721 U CN202220910721 U CN 202220910721U CN 217483024 U CN217483024 U CN 217483024U
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Abstract
For SF 6 A heat exchange system of a gas recovery and recharge device belongs to a transformer substation SF 6 The technical field of gas recovery and refilling; the input end of the recovery branch is hermetically connected with the recovery recharging device, and the output end of the recovery branch is hermetically connected with the storage tank; input end of recharging branch and SF 6 Qualified gas storage device is sealed evenThe output end of the recharging branch is connected with SF 6 The gas insulation equipment is connected in a sealing way; the heat exchange device is simultaneously connected between the input end and the output end of the recovery branch circuit and between the input end and the output end of the recharge branch circuit in series in a sealing manner; recovering or recharging in situ, regulating the temperature by means of heat exchange devices according to the variation of the ambient temperature, SF being recovered 6 Complete liquefaction of gas, liquid SF during refilling 6 Complete gasification, greatly improves the efficiency of field operation.
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 a gas recovery device for SF 6 A heat exchange system of the gas 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 SF 6 In the case of on-site recycling operations, it is usually stored in liquid form in cylinders or tanks for ease of transportation and storage. 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, so that SF 6 The gas being non-liquefiable or liquefiablePoor effect and severe influence on SF 6 Efficiency of on-site recovery operations. 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 heat exchange pipeline for the gas recovery and recharging device can be used for quickly cooling, liquefying and storing during recovery operation, safely and efficiently gasifying and recharging during recharging operation, can be combined with the existing recovery and recharging device, greatly reduces the engineering field operation cost, and is suitable for fault maintenance and extension of ultrahigh-voltage and ultrahigh-voltage electrical equipment and fully-closed combined electrical appliancesAnd an effective means is provided for recycling and recharging operation projects needing large air quantity.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to design a be used for SF 6 A heat exchange system of a gas recovery and recharge device, which aims to solve 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:
for SF 6 A heat exchange system for a gas recovery and recharge device, comprising: a recovery branch, a recharging branch and a heat exchange device; the input end of the recovery branch is hermetically connected with the recovery and recharging device, and the output end of the recovery branch is hermetically connected with the storage tank; the input end of the recharging branch and the SF 6 The qualified gas storage device is hermetically connected with the output end of the refilling branch and the SF 6 The gas insulation equipment is connected in a sealing way; the heat exchange device is simultaneously connected between the input end and the output end of the recovery branch and between the input end and the output end of the recharging branch in series in a sealing manner.
The heat exchange pipeline of the utility model recovers SF on site 6 Gas phase, SF being regulated by heat exchange means according to variations in ambient temperature 6 Liquefying temperature of gas, SF in energy recovery operation 6 Rapidly cooling, liquefying and storing the gas; in situ return of liquid SF 6 Stage of conditioning the liquid SF by means of heat exchange devices according to the variation of the ambient 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 heat exchange device comprises: an air heat exchanger (10), a plate heat exchanger (11), and a cold and heat source supply device (12); the input end of the air heat exchanger (10) is respectively in sealed connection with the input end of the recovery branch and the input end of the recharging branch, the output end of the air heat exchanger (10) is in sealed connection with the first port of the plate type heat exchanger (11), and the second port of the plate type heat exchanger (11) is respectively in sealed connection with the output end of the recovery branch and the output end of the recharging branch; and the heat source output end and the cold source output end of the cold and heat source supply device (12) are correspondingly and hermetically connected with the third port and the fourth port of the plate heat exchanger (11).
Further, the input end of the recovery branch comprises: 1 # A self-sealing joint, a first manual valve S1, a first electric ball valve V1, the self-sealing joint 1 # The self-sealing joint is connected with one end of a first manual valve S1 in a sealing mode, the other end of the first manual valve S1 is connected with one end of a first electric ball valve V1 in a sealing mode, and the other end of the first electric ball valve V1 is connected with the input end of the air heat exchanger (10) in a sealing mode.
Further, the output end of the recovery branch comprises: a second electric ball valve V2 and second manual valves S2, 4 # One end of the second electric ball valve V2 is hermetically connected with the first output end of the plate heat exchanger (11), the other end of the second electric ball valve V2 is hermetically connected with one end of a second manual valve S2, and the other end of the second manual valve S2 is hermetically connected with 4 # The self-sealing joints are connected in a sealing way.
Further, the input end of the recharging branch comprises: 3 # A self-sealing joint, a third manual valve S3, a third electric ball valve V3, 3 # The self-sealing joint is hermetically connected with one end of a third manual valve S3, the other end of the third manual valve S3 is hermetically connected with one end of a third electric ball valve V3, and the other end of the third electric ball valve V3 is hermetically connected with the input end of the air heat exchanger (10).
Further, the output end of the recharging branch comprises: a fourth electric ball valve V4, a filter (13), and fourth manual valves S4, 2 # One end of a fourth electric ball valve V4 is hermetically connected with the first output end of the plate heat exchanger (11), the other end of the fourth electric ball valve V4 is hermetically connected with the input end of a filter (13), and the filter(13) Is hermetically connected with one end of a fourth manual valve S4, and the other end of the fourth manual valve S4 is connected with 2 # The self-sealing joints are connected in a sealing way.
Further, the heat exchange device further comprises: and the pressure sensor P1 is hermetically arranged at the first output end of the plate heat exchanger (11) by the pressure sensor P1.
Further, the heat exchange device further comprises: and the temperature sensor T is hermetically arranged on the plate heat exchanger (11).
The utility model has the advantages that:
(1) the heat exchange pipeline of the utility model recovers SF on site 6 Gas phase, SF being regulated by heat exchange means according to variations in ambient temperature 6 Liquefaction temperature of gas, recovery of SF 6 Rapidly cooling, liquefying and storing the gas; in situ return of liquid SF 6 Stage of conditioning the liquid SF by means of heat exchange devices according to the variation of the ambient 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 And the gasification is complete, and the efficiency of field operation is greatly improved.
(2) The utility model discloses a different joint hose of heat exchange pipeline accessible can be connected with the recovery recharging device of different producer production, the at utmost utilizes the on-the-spot equipment that has now, greatly reduced engineering site operations cost, utilize air heat transfer and compressor work doing doublestage heat exchange, improve heat exchange efficiency ratio greatly, required energy consumption when reducing the operation, winter summer when having overcome the operation, round the clock, environmental impact difficult problems such as regional, strengthen the current environmental suitability of recovery recharging device, carry out on-the-spot SF for safe high efficiency 6 An effective implementation way is provided for the gas recovery and refilling operation; the method provides an effective means for the work projects of ultrahigh-voltage and extra-high-voltage electrical equipment, totally-enclosed combined electrical equipment, and the like which need large air quantity recycling and recharging.
Drawings
FIG. 1 is an embodiment of the present inventionOne of examples I for SF 6 The structure schematic diagram of the heat exchange system of the gas recovery recharging device;
fig. 2 is a diagram of a first embodiment of the present invention for SF 6 The structure schematic diagram of the cold and heat source supply device of the heat exchange system of the gas recovery and recharging 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 combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative 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 method for SF 6 A heat exchange system for a gas recovery and recharge device, comprising: a first manual valve S1, a second manual valve S2, a third manual valve S3, a fourth manual valve S4, a first electric ball valve V1, a second electric ball valve V2, a third electric ball valve V3, a fourth electric ball valve V4, a safety valve SV1, an air heat exchanger 10, a plate heat exchanger 11, a cold and heat source supply device 12, a filter 13, a pressure sensor P1, a temperature sensor T, 1, a temperature sensor T, 13 # Self-sealing joint, 2 # Self-sealing joint, 3 # Self-sealing joint, 4 # Self-sealing joint.
One end of the first electric ball valve V1 is connected with one end of the air heat exchanger 10 in a sealing way through a pipeline, the other end of the first electric ball valve V1 is connected with one end of the first manual valve S1 in a sealing way through a pipeline, and the other end of the first manual valve S1 is connected with the air heat exchanger 1 through a pipeline in a sealing way # The self-sealing joint is in sealing connection, the other end of the air heat exchanger 10 is in sealing connection with the first port of the plate heat exchanger 11 through a pipeline, and the second port of the plate heat exchanger 11 is in sealing connection with the second electric ball valve V2One end of the second electric ball valve V2 is hermetically connected with one end of the second manual valve S2 through a pipeline, and the other end of the second manual valve S2 is hermetically connected with the second manual valve 2 through a pipeline # The self-sealing joint is connected in a sealing mode, the temperature sensor T is installed on the plate heat exchanger 11 in a sealing mode, the pressure sensor P1 and the safety valve SV1 are installed on a pipeline between the plate heat exchanger 11 and the second electric ball valve V2 in a sealing mode, and the cold and heat source supply device 12 is connected with the plate heat exchanger 11 in a sealing mode through the pipeline;
one end of a third electric ball valve V3 is hermetically connected between the first electric ball valve V1 and the air heat exchanger 10 through a pipeline, the other end of the third electric ball valve V3 is hermetically connected with one end of a third manual valve S3 through a pipeline, and the other end of the third manual valve S3 is hermetically connected with the 3 rd manual valve through a pipeline # The self-sealing joints are connected in a sealing way;
one end of a fourth electric ball valve V4 is hermetically connected between the plate heat exchanger 11 and the second electric ball valve V2 through a pipeline, the other end of the fourth electric ball valve V4 is hermetically connected with one end of a filter 13 through a pipeline, the other end of the filter 13 is hermetically connected with one end of a fourth manual valve S4 through a pipeline, and the other end of the fourth manual valve S4 is hermetically connected with the other end of the fourth manual valve S4 through a pipeline and 4 # The self-sealing joints are connected in a sealing way.
As shown in fig. 2, the cold heat source supply device 12 includes: the system comprises a first check valve 120, a first fan condenser 121, a second check valve 122, a gas-liquid separator 123, a compressor 124, an oil separator 125, a multi-way valve 126, a second fan condenser 127, a liquid accumulator 128, a drying filter 129, a thermal expansion valve 130 and a check valve group 131.
An outlet of the first check valve 120 is hermetically connected with a third port of the plate heat exchanger 11 through a pipeline, a fourth port of the plate heat exchanger 11 is hermetically connected with a bottom port of the check valve group 131 through a pipeline, a top port of the check valve group 131 is hermetically connected with one end of the second fan condenser 127 through a pipeline, the other end of the second fan condenser 127 is hermetically connected with a C port of the multi-way valve 126 through a pipeline, a D port of the multi-way valve 126 is hermetically connected with an output end of the oil separator 125 through a pipeline, an E port of the multi-way valve 126 is hermetically connected with an input end of the first fan condenser 121 through a pipeline, an output end of the first fan condenser 121 is hermetically connected with an inlet of the first check valve 120 through a pipeline, an S port of the multi-way valve 126 is hermetically connected with an input end of the gas-liquid separator 123 through a pipeline, and an output end of the gas-liquid separator 123 is hermetically connected with an input end of the compressor 124 through a pipeline, the first output end of the compressor 124 is hermetically connected with the first input end of the oil separator 125 through a pipeline, the second output end of the compressor 124 is hermetically connected with the second input end of the oil separator 125 through a pipeline, the inlet of the second check valve 122 is hermetically connected between the first check valve 120 and the plate heat exchanger 11 through a pipeline, the outlet of the second check valve 122 is hermetically connected with the input end of the first fan condenser 121 through a pipeline, the input end of the reservoir 128 is hermetically connected with the left port of the check valve group 131 through a pipeline, the output end of the reservoir 128 is hermetically connected with the input end of the dry filter 129 through a pipeline, the output end of the dry filter 129 is hermetically connected with the input end of the thermostatic expansion valve 130 through a pipeline, and the output end of the thermostatic expansion valve 130 is hermetically connected with the right port of the check valve group 131 through a pipeline.
The check valve group 131 includes: 1 # Check valve, 2 # Check valve, 3 # Check valve, 4 # A one-way valve; 1 is as follows # Input end of one-way valve and 3 # The output ends of the one-way valves are hermetically connected, 1 # Output end of one-way valve and 2 # The output ends of the one-way valves are hermetically connected, 2 # Input end of one-way valve and 4 # The output ends of the one-way valves are hermetically connected, 3 # Input end of one-way valve and 4 # The input ends of the one-way valves are hermetically connected; the fourth port of the plate heat exchanger 11 is hermetically connected with the second port 2 # Input end of one-way valve and 4 # The output end of the one-way valve is connected with a common point, and one end of the second fan condenser 127 is hermetically connected with 1 # Input end of one-way valve and 3 # The output end of the one-way valve is connected with a common point, and the input end of the liquid storage device 128 is hermetically connected with 1 # Output end of one-way valve and 2 # The output end of the one-way valve is connected with a common point, and the output end of the thermostatic expansion valve 130 is hermetically connected with 3 # Input end of one-way valve and 4 # The input ends of the one-way valves are connected to a common point.
Working process of the cold and heat source supply device:
1. by the work of the compressor 124, the refrigerant medium inside the compressor 124 flows along the oil separator 125, the DC direction of the multi-way valve 126, the second fan condenser 127 and the 1 on the upper left side of the check valve set 131 in sequence # One-way valve, reservoir 128, dry filter 129, thermostatic expansion valve 130, one-way valve set 131 right and lower side 4 # The ES of the check valve, the plate heat exchanger 11, the second check valve 122, and the multi-way valve 126 returns to the gas-liquid separator 123 and the compressor 124 to form a cold source supply circulation loop.
2. By the work of the compressor 124, the heat medium in the compressor 124 flows along the oil separator 125, the DE direction of the multi-way valve 126, the first fan condenser 121, the first check valve 120, the plate heat exchanger 11, and the lower left side 2 of the check valve set 131 in sequence # One-way valve, liquid reservoir 128, dry filter 129, thermostatic expansion valve 130, 3 on the upper right side of one-way valve group 131 # The CS of the check valve, the second fan condenser 127, and the multi-way valve 126 returns the heat source supply circulation circuit to the gas-liquid separator 123 and the compressor 124.
The working flow of the heat exchange pipeline is as follows:
1. on-site recovery operation
Will 1 # Self-sealing joint, 4 # The self-sealing joint passes through the high-pressure corrugated hose and the recovery and recharge device 14 respectively 1 # Outlet, storage tank 17 1 # Interface sealing connection, recovery of 2 of the refilling device 14 # The inlet passes through the high-pressure corrugated hose and the SF 6 1 of gas-insulated apparatus 15 # The interface is connected in a sealing way.
(1) When the environmental temperature is less than the set parameter value, the environmental temperature is lower, and the high-temperature SF can be reduced by the environmental temperature 6 The temperature of the gas is controlled by opening a first manual valve S1 and a second manual valve S2, opening a first electric ball valve V1 and a second electric ball valve V2, opening the air heat exchanger 10 for cooling, and starting the recovery and recharge device 14 to recycle SF 6 SF in gas-insulated apparatus 15 6 SF at high temperature after gas compression 6 Gas flows through the first handThe movable valve S1 and the first electric ball valve V1 are cooled through the air heat exchanger 10, and then are pressed into the storage tank 17 for storage after passing through the second electric ball valve V2 and the second manual valve S2.
(2) When the environmental temperature is not less than the set parameter value, the environmental temperature is higher, and the high-temperature SF cannot be reduced by the environmental temperature 6 Opening a first manual valve S1 and a second manual valve S2, opening a first electric ball valve V1 and a second electric ball valve V2, opening the air heat exchanger 10 to cool, simultaneously opening the cold and heat source supply device 12 to cool the plate heat exchanger 11, and starting the recovery and recharging device 14 to recycle SF gas 6 SF in gas-insulated apparatus 15 6 After gas compression, high temperature SF 6 The gas flows through the first manual valve S1 and the first electric ball valve V1, is cooled for the first time through the air heat exchanger 10, is cooled for the second time through the plate heat exchanger 11, and is pressed into the storage tank 17 for storage after passing through the second electric ball valve V2 and the second manual valve S2.
2. Evacuation before refilling
Will 1 # Self-sealing joint, 2 # 2 from the sealing joint lead to respectively cross high-pressure corrugated hose and retrieve recharging device 14 # Entry, SF 6 1 of gas-insulated apparatus 15 # Interface sealing connection, 3 # The self-sealing joint passes through the high-pressure corrugated hose and the SF 6 Qualified gas storage device 16 1 # The interface is connected in a sealing way.
Opening the first manual valve S1 and the fourth manual valve S4, opening the first electric ball valve V1, the third electric ball valve V3 and the fourth electric ball valve V4, starting the recovery and recharge device 14 and slowly opening SF 6 Valves of gas-insulated equipment 15, recovery/recharge device 14 for each line and SF 6 And (3) vacuumizing an air chamber of the gas insulation equipment 15, and when the vacuum degree meets the requirement, closing the fourth manual valve S4 and the first manual valve S1, closing the recovery and recharge device 14, the first electric ball valve V1, the third electric ball valve V3 and the fourth electric ball valve V4 in sequence, ending the vacuumizing operation, and entering a recharge operation stage.
3. Recharging on-site
(1) When the ambient temperature isWhen the environmental temperature is higher than the set parameter value, opening a third manual valve S3, a third electric ball valve V3, a fourth manual valve S4 and a fourth electric ball valve V4, and opening the air heat exchanger 10 for heating, wherein SF is the same as the set parameter value 6 Liquid SF in the conforming gas storage device 16 6 After passing through the third manual valve S3 and the third electric ball valve V3, the temperature is raised and the gasified SF is obtained by the air heat exchanger 10 6 The gas passes through a fourth electric ball valve V4, a filter 13 and a fourth manual valve S4 in sequence and is filled into SF 6 In the gas insulated apparatus 15, SF is generated due to the high ambient temperature and the heating and gasification by the temperature rise of the air heat exchanger 10 6 Liquid SF in the conforming gas storage device 16 6 Can be completely gasified and then filled with SF 6 A gas-insulated device 15.
(2) When the environmental temperature is lower than the parameter value, the third manual valve S3, the third electric ball valve V3, the fourth manual valve S4 and the fourth electric ball valve V4 are opened, the air heat exchanger 10 is started to heat, the cold and heat source supply device 12 is started to heat the plate heat exchanger 11, and the SF is heated 6 Liquid SF in the conforming gas storage device 16 6 After passing through a third manual valve S3 and a third electric ball valve V3, the temperature is raised and the gas is gasified through an air heat exchanger 10, and then the temperature is raised and the gas is gasified through a plate heat exchanger 11, so that the gasified SF 6 The gas passes through a fourth electric ball valve V4, a filter 13 and a fourth manual valve S4 in sequence and is filled into SF 6 In the gas-insulated apparatus 15, SF in liquid state 6 After twice temperature rise gasification, even if the environmental temperature is very low, the liquid SF can be ensured 6 Completely gasified and then filled with SF 6 A gas-insulated device 15.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; 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 (8)
1. For SF 6 The heat exchange system of the gas recovery recharging device is characterized by comprising: a recovery branch, a recharging branch and a heat exchange device; the input end of the recovery branch is hermetically connected with the recovery and recharging device, and the output end of the recovery branch is hermetically connected with the storage tank; the input end of the recharging branch and the SF 6 The qualified gas storage device is hermetically connected, and the output end of the recharging branch is connected with the SF 6 The gas insulation equipment is connected in a sealing way; the heat exchange device is simultaneously connected between the input end and the output end of the recovery branch and between the input end and the output end of the recharging branch in series in a sealing mode.
2. For SF according to claim 1 6 The heat exchange system of the gas recovery recharging device is characterized in that the heat exchange device comprises: an air heat exchanger (10), a plate heat exchanger (11), and a cold/heat source supply device (12); the input end of the air heat exchanger (10) is respectively in sealed connection with the input end of the recovery branch and the input end of the recharging branch, the output end of the air heat exchanger (10) is in sealed connection with the first port of the plate type heat exchanger (11), and the second port of the plate type heat exchanger (11) is respectively in sealed connection with the output end of the recovery branch and the output end of the recharging branch; and the heat source output end and the cold source output end of the cold and heat source supply device (12) are correspondingly and hermetically connected with the third port and the fourth port of the plate heat exchanger (11).
3. For SF according to claim 2 6 The heat exchange system of the gas recovery recharging device is characterized in that the input end of the recovery branch comprises: 1 # A self-sealing joint, a first manual valve S1, a first electric ball valve V1, the self-sealing joint 1 # The self-sealing joint is connected with one end of a first manual valve S1 in a sealing mode, the other end of the first manual valve S1 is connected with one end of a first electric ball valve V1 in a sealing mode, and the other end of the first electric ball valve V1 is connected with the input end of the air heat exchanger (10) in a sealing mode.
4. For SF according to claim 2 6 The heat exchange system of the gas recovery and recharging device is characterized in that the output end of the recovery branch comprises: a second electric ball valve V2 and second manual valves S2, 4 # One end of the second electric ball valve V2 is hermetically connected with the first output end of the plate heat exchanger (11), the other end of the second electric ball valve V2 is hermetically connected with one end of a second manual valve S2, and the other end of the second manual valve S2 is hermetically connected with 4 # The self-sealing joints are connected in a sealing way.
5. For SF according to claim 2 6 The heat exchange system of the gas recovery recharging device is characterized in that the input end of the recharging branch comprises: 3 # A self-sealing joint, a third manual valve S3, a third electric ball valve V3, 3 # The self-sealing joint is hermetically connected with one end of a third manual valve S3, the other end of the third manual valve S3 is hermetically connected with one end of a third electric ball valve V3, and the other end of the third electric ball valve V3 is hermetically connected with the input end of the air heat exchanger (10).
6. For SF according to claim 2 6 The heat exchange system of the gas recovery recharging device is characterized in that the output end of the recharging branch comprises: a fourth electric ball valve V4, a filter (13), and fourth manual valves S4, 2 # One end of the fourth electric ball valve V4 is hermetically connected with the first output end of the plate heat exchanger (11), the other end of the fourth electric ball valve V4 is hermetically connected with the input end of the filter (13), the output end of the filter (13) is hermetically connected with one end of a fourth manual valve S4, and the other end of the fourth manual valve S4 is hermetically connected with the second output end of the plate heat exchanger (2) # The self-sealing joints are connected in a sealing way.
7. For SF according to claim 2 6 The heat exchange system of the gas recovery and recharging device is characterized in that the heat exchange device further comprises: a pressure sensor P1, the pressure sensor P1 is hermetically arranged at the first part of the plate heat exchanger (11)And an output terminal.
8. For SF according to claim 2 6 The heat exchange system of the gas recovery recharging device is characterized in that the heat exchange device further comprises: and the temperature sensor T is hermetically arranged on the plate type heat exchanger (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220910721.6U CN217483024U (en) | 2022-04-19 | 2022-04-19 | For SF 6 Heat exchange system of gas recovery and recharging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220910721.6U CN217483024U (en) | 2022-04-19 | 2022-04-19 | For SF 6 Heat exchange system of gas recovery and recharging device |
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| Publication Number | Publication Date |
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| CN217483024U true CN217483024U (en) | 2022-09-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220910721.6U Active CN217483024U (en) | 2022-04-19 | 2022-04-19 | For SF 6 Heat exchange system of gas recovery and recharging device |
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| Country | Link |
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| CN (1) | CN217483024U (en) |
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2022
- 2022-04-19 CN CN202220910721.6U patent/CN217483024U/en active Active
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