Heat exchange system for SF6 gas recycling and recharging device and two-stage temperature control method of heat exchange system
A technology of heat exchange system and SF6, which is applied in the field of heat exchange system and its two-stage temperature control, can solve the problems of low on-site operation efficiency, incomplete gasification, incomplete gas liquefaction, etc., so as to enhance environmental adaptability and reduce operation Cost and energy saving effect
Pending Publication Date: 2022-07-08
ANHUI XINLT POWER TECH CONSULTING
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Problems solved by technology
[0011] The purpose of the invention is to design a 6 A two-stage temperature control method for the heat exchange system of the gas recovery and recharging device to solve the problem of SF in the existing recovery and recharging device due to the influence of ambient temperature changes. 6 Incomplete gas liquefaction and liquid SF present during backfill 6 The problem of low efficiency of on-site operations caused by incomplete gasification
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Embodiment 1
[0037] like figure 1 shown, a for SF 6 The heat exchange system of the gas recovery and recharging device includes: the first manual valve S1, the second manual valve S2, the third manual valve S3, the fourth manual valve S4, the first electric ball valve V1, the second electric ball valve V2, the first electric ball valve Three electric ball valve V3, fourth electric ball valve V4, safety valve SV1, air heat exchanger 10, plate heat exchanger 11, cold and heat source supply device 12, filter 13, pressure sensor P1, temperature sensor T, 1 # Self-sealing joint, 2 # Self-sealing joint, 3 # Self-sealing joint, 4 # Self-sealing connector.
[0038] One end of the first electric ball valve V1 is connected to one end of the air heat exchanger 10 through a pipeline seal, the other end of the first electric ball valve V1 is connected to one end of the first manual valve S1 through a pipeline seal, and the other end of the first manual valve S1 is connected through a pipeline. pip...
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The invention discloses a heat exchange system for an SF6 gas recycling and recharging device and a two-stage temperature control method of the heat exchange system, belongs to the technical field of SF6 gas recycling and recharging of a transformer substation, and solves the problems that due to the influence of environment temperature change, the SF6 gas is not completely liquefied during recycling and the liquid SF6 is not completely gasified during recharging of an existing recycling and recharging device. And the problem of low field operation efficiency is solved. According to the method, in the on-site SF6 gas recovery stage, the liquefaction procedure of the SF6 gas is adjusted according to the change of the environment temperature, and the SF6 gas is rapidly cooled, liquefied and stored during recovery operation; in the on-site liquid SF6 recharging stage, the gasification process of the liquid SF6 is adjusted according to the change of the environment temperature, and safe and efficient gasification and recharging are achieved during recharging operation; the SF6 gas is completely liquefied during recycling, and the liquid SF6 is completely gasified during recharging, so that the efficiency of field operation is greatly improved.
Description
technical field [0001] The invention belongs to the substation SF 6 The technical field of gas recovery and recharging relates to a 6 A heat exchange system of a gas recovery and recharging device and a two-stage temperature control method thereof. Background technique [0002] SF 6 It is a colorless, odorless, non-toxic, non-flammable inert gas with stable chemical properties, excellent arc extinguishing and insulating properties, and its relative density in gaseous state is 6.16g / cm 3 (20℃, 0.1MPa), 1400g / cm in liquid state 3 (at 20°C). For ease of transportation and storage, SF 6 Gases are usually stored in cylinders in liquid form. [0003] SF 6 It is gaseous at normal temperature and pressure, and it is easier to liquefy into liquid under certain pressure after the temperature is lowered. When the ambient temperature rises, the corresponding liquefaction pressure rises accordingly, becoming a gas that is not easily liquefied. When the temperature exceeds SF 6 ...
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IPC IPC(8): F25B13/00F25B41/40F25B41/20F25J1/02
CPCF25B13/00F25B41/40F25B41/20F25J1/0279
Inventor 黄海龙许一力苏晓东陈以明房超武子豪方红磊孙伟
Owner ANHUI XINLT POWER TECH CONSULTING