CN217483025U - For SF 6 Cold and heat source supply device for recovering and charging on site - Google Patents
For SF 6 Cold and heat source supply device for recovering and charging on site Download PDFInfo
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- CN217483025U CN217483025U CN202220910722.0U CN202220910722U CN217483025U CN 217483025 U CN217483025 U CN 217483025U CN 202220910722 U CN202220910722 U CN 202220910722U CN 217483025 U CN217483025 U CN 217483025U
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Abstract
For SF 6 A cold and heat source supply device for recovering and charging on site belongs to the SF of transformer substation 6 The technical field of gas recovery and recharging, and solves the problem of SF existing in the recovery process due to the influence of environmental temperature change 6 Incomplete liquefaction of gas and liquid SF present during refilling 6 Incomplete gasification resulting in on-site workThe problem of low industrial efficiency; the input end of the cold source supply circulation loop is hermetically connected with the third port of the plate heat exchanger, and the output end of the cold source supply circulation loop is hermetically connected with the fourth port of the plate heat exchanger; the output end of the heat source supply circulation loop is hermetically connected with the third port of the plate heat exchanger, and the input end of the heat source supply circulation loop is hermetically connected with the fourth port of the plate heat exchanger; the cold and heat source supply device ensures SF in recovery 6 Liquid SF when gas is completely liquefied and refilled 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 And recovering the charged cold and heat source supply device on site.
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 on-site recycling operations, for convenience of transportation and storage, SF is recovered from the storage in liquid form 6 When gas is required, SF is added 6 Gaseous SF in gas-insulated apparatus 6 And (5) cooling and liquefying. For SF 6 In situ recharging operations requiring storing SF in liquid form 6 The gas is fully gasified and then is refilled to SF 6 In gas-insulated apparatus, steel is often usedThe gas in the cylinder or the gas outside the steel cylinder can be used for refilling, and the SF can be realized by the gas 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.
In view of the above, there is a need for a method for SF 6 On-site recycling of charged cold and heat source supply device to improve SF 6 And the efficiency of the recharging operation is recovered on site.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to design a be used for SF 6 The cold and heat source supply device for recovering the charge on site to solve the problem of SF existing during recovery due to the influence of environmental temperature change 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 The cold and heat source supply device for recovering the charge on site is used for cooling or heating the plate heat exchanger (11), and the first port and the second port of the plate heat exchanger (11) are used for inputting and outputting gaseous or liquid SF 6 The method comprises the following steps: the cold source supply circulation loop and the heat source supply circulation loop are connected, the input end of the cold source supply circulation loop is hermetically connected with the third port of the plate heat exchanger (11), and the output end of the cold source supply circulation loop is hermetically connected with the fourth port of the plate heat exchanger (11); what is needed isThe output end of the heat source supply circulation loop is hermetically connected with the third port of the plate heat exchanger (11), and the input end of the heat source supply circulation loop is hermetically connected with the fourth port of the plate heat exchanger (11).
The cold and heat source supply device of the utility model recovers SF on site 6 In the gas phase, according to the change of the environmental temperature, the cold source is supplied to the circulating loop to cool the plate heat exchanger (11), thereby adjusting SF 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 regulating the liquid SF by heating the plate heat exchanger (11) by means of a heat source supply circulation circuit 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 cold source supply circulation loop comprises: the system comprises a second one-way 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 storage device (128), a drying filter (129), a thermostatic expansion valve (130) and a one-way valve group (131); an inlet of the second check valve (122) is hermetically connected with a third port of the plate heat exchanger (11), a fourth port of the plate heat exchanger (11) is hermetically connected with a check valve group (131), the check valve group (131) is hermetically connected with one end of a second fan condenser (127), the other end of the second fan condenser (127) is hermetically connected with a C port of a multi-way valve (126), a D port of the multi-way valve (126) is hermetically connected with an output end of the oil separator (125), an E port of the multi-way valve (126) is hermetically connected with an inlet of the second check valve (122), an S port of the multi-way valve (126) is hermetically connected with an input end of the gas-liquid separator (123), an output end of the gas-liquid separator (123) is hermetically connected with an input end of the compressor (124), a first output end of the compressor (124) is hermetically connected with a first input end of the oil separator (125), a second output end of the compressor (124) is hermetically connected with a second input end of the oil separator (125), the input end of the liquid storage device (128) is connected with the one-way valve group (131) in a sealing mode, the output end of the liquid storage device (128) is connected with the input end of the drying filter (129) in a sealing mode, the output end of the drying filter (129) is connected with the input end of the thermostatic expansion valve (130) in a sealing mode, and the output end of the thermostatic expansion valve (130) is connected with the one-way valve group (131) in a sealing mode.
Further, the heat source supply circulation circuit includes: the system comprises a first one-way valve (120), a first fan condenser (121), a gas-liquid separator (123), a compressor (124), an oil separator (125), a multi-way valve (126), a second fan condenser (127), a liquid reservoir (128), a drying filter (129), a thermal expansion valve (130) and a one-way valve set (131); an outlet of the first check valve (120) is hermetically connected with a third port of the plate heat exchanger (11), a fourth port of the plate heat exchanger (11) is hermetically connected with a check valve group (131), the check valve group (131) is hermetically connected with one end of a second fan condenser (127), the other end of the second fan condenser (127) is hermetically connected with a port C of a multi-way valve (126), a port D of the multi-way valve (126) is hermetically connected with an output end of the oil separator (125), a port E of the multi-way valve (126) is hermetically connected with an input end of the first fan condenser (121), an output end of the first fan condenser (121) is hermetically connected with an inlet of the first check valve (120), a port S of the multi-way valve (126) is hermetically connected with an input end of the gas-liquid separator (123), an output end of the gas-liquid separator (123) is hermetically connected with an input end of the compressor (124), a first output end of the compressor (124) is hermetically connected with a first input end of the oil separator (125), the second output end of the compressor (124) is hermetically connected with the second input end of the oil separator (125), the input end of the liquid reservoir (128) is hermetically connected with the check valve bank (131), the output end of the liquid reservoir (128) is hermetically connected with the input end of the drying filter (129), the output end of the drying filter (129) is hermetically connected with the input end of the thermostatic expansion valve (130), and the output end of the thermostatic expansion valve (130) is hermetically connected with the check valve bank (131).
Further, the check valve group (131) comprises: 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 reservoir (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 thermal 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.
The utility model has the advantages that:
(1) the cold and heat source supply device of the utility model recovers SF on site 6 In the gas stage, according to the change of the environmental temperature, the cold source is supplied to the circulation loop to cool the plate heat exchanger (11), thereby adjusting SF 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 regulating the SF liquid by heating the plate exchanger (11) by means of a heat source supply circuit according to the variations 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 Complete gasification, greatly improves the efficiency of field operation.
Drawings
FIG. 1 shows a first embodiment of the present invention for SF 6 The structure of the cold and heat source supply device for on-site recovery charging.
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 of the present invention, all other embodiments obtained by a person skilled in the art without making 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 The cold and heat source supply device for recovering the charge on site comprises: 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 liquid reservoir 128 is hermetically connected with the left port of the check valve group 131 through a pipeline, the output end of the liquid reservoir 128 is hermetically connected with the input end of the drying filter 129 through a pipeline, the output end of the drying 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 reservoir 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 thermal 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 direction and gas-liquid separator 123 with the one-way valve, the plate heat exchanger 11, the second one-way valve 122 and the multi-way valve 126 and then the compressor 124 form cold source supplyA 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 to the gas-liquid separator 123 and the compressor 124 to form a heat source supply circulation circuit.
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 or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (4)
1. For SF 6 The cold and heat source supply device for recovering the charge on site is used for cooling or heating the plate heat exchanger (11), and the first port and the second port of the plate heat exchanger (11) are used for inputting and outputting gaseous or liquid SF 6 The method is characterized by comprising the following steps: the cold source supply circulation loop and the heat source supply circulation loop are connected, the input end of the cold source supply circulation loop is connected with the third port of the plate heat exchanger (11) in a sealing mode, and the output end of the cold source supply circulation loop is connected with the fourth port of the plate heat exchanger (11) in a sealing mode; the output end of the heat source supply circulation loop is hermetically connected with the third port of the plate heat exchanger (11), and the input end of the heat source supply circulation loop is hermetically connected with the fourth port of the plate heat exchanger (11).
2. For SF according to claim 1 6 The cold and heat source supply device for recovering the charge on site is characterized in that the cold source supply circulating loop comprises: a second check valve (122),The system comprises a gas-liquid separator (123), a compressor (124), an oil separator (125), a multi-way valve (126), a second fan condenser (127), a liquid reservoir (128), a drying filter (129), a thermostatic expansion valve (130) and a one-way valve group (131); an inlet of the second check valve (122) is hermetically connected with a third port of the plate heat exchanger (11), a fourth port of the plate heat exchanger (11) is hermetically connected with a check valve group (131), the check valve group (131) is hermetically connected with one end of a second fan condenser (127), the other end of the second fan condenser (127) is hermetically connected with a C port of a multi-way valve (126), a D port of the multi-way valve (126) is hermetically connected with an output end of the oil separator (125), an E port of the multi-way valve (126) is hermetically connected with an inlet of the second check valve (122), an S port of the multi-way valve (126) is hermetically connected with an input end of the gas-liquid separator (123), an output end of the gas-liquid separator (123) is hermetically connected with an input end of the compressor (124), a first output end of the compressor (124) is hermetically connected with a first input end of the oil separator (125), a second output end of the compressor (124) is hermetically connected with a second input end of the oil separator (125), the input end of the liquid storage device (128) is hermetically connected with the one-way valve group (131), the output end of the liquid storage device (128) is hermetically connected with the input end of the drying filter (129), the output end of the drying filter (129) is hermetically connected with the input end of the thermostatic expansion valve (130), and the output end of the thermostatic expansion valve (130) is hermetically connected with the one-way valve group (131).
3. For SF according to claim 1 6 A cold and heat source supply device for recovering a charge on site, said heat source supply circuit comprising: the system comprises a first one-way valve (120), a first fan condenser (121), a gas-liquid separator (123), a compressor (124), an oil separator (125), a multi-way valve (126), a second fan condenser (127), a liquid reservoir (128), a drying filter (129), a thermal expansion valve (130) and a one-way valve set (131); an outlet of the first check valve (120) is in sealing connection with a third port of the plate heat exchanger (11), a fourth port of the plate heat exchanger (11) is in sealing connection with the check valve group (131), the check valve group (131) is in sealing connection with one end of the second fan condenser (127), the other end of the second fan condenser (127) is in sealing connection with a port C of the multi-way valve (126), and a port D of the multi-way valve (126) is in sealing connection with oilThe output end of the separator (125) is hermetically connected, the E port of the multi-way valve (126) is hermetically connected with the input end of the first fan condenser (121), the output end of the first fan condenser (121) is hermetically connected with the inlet of the first one-way valve (120), the S port of the multi-way valve (126) is hermetically connected with the input end of the gas-liquid separator (123), the output end of the gas-liquid separator (123) is hermetically connected with the input end of the compressor (124), the first output end of the compressor (124) is hermetically connected with the first input end of the oil separator (125), the second output end of the compressor (124) is hermetically connected with the second input end of the oil separator (125), the input end of the liquid reservoir (128) is hermetically connected with the one-way valve group (131), the output end of the liquid reservoir (128) is hermetically connected with the input end of the drying filter (129), the output end of the drying filter (129) is hermetically connected with the input end of the thermal expansion valve (130), the output end of the thermostatic expansion valve (130) is hermetically connected with the check valve group (131).
4. For SF according to claim 2 or 3 6 The cold and heat source supply device capable of being recharged on site is characterized in that the check valve group (131) comprises: 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 accumulator (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 thermal 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.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220910722.0U CN217483025U (en) | 2022-04-19 | 2022-04-19 | For SF 6 Cold and heat source supply device for recovering and charging on site |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220910722.0U CN217483025U (en) | 2022-04-19 | 2022-04-19 | For SF 6 Cold and heat source supply device for recovering and charging on site |
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| CN217483025U true CN217483025U (en) | 2022-09-23 |
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| CN202220910722.0U Active CN217483025U (en) | 2022-04-19 | 2022-04-19 | For SF 6 Cold and heat source supply device for recovering and charging on site |
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