Sulfur hexafluoride gas supplementing system and method

Abstract

The invention discloses a sulfur hexafluoride gas supplementing system and method. By the adoption of the sulfur hexafluoride gas supplementing system and method, a gas inlet and a gas charging port are more convenient to use; layout and fixation in a shell are more reasonable and reliable by means of a battery protective assembly frame, an electromagnetic valve assembly frame and a pressure sensor assembly frame; vacuumizing operation can be conducted, remote control is achieved beneficially, and damage is avoided. A gas inflow rapid plug and a charging rapid plug in the sulfur hexafluoride gas supplementing system are arranged on the surface, provided with a displayer, of the shell. The shell comprises an upper shell body and a lower shell body which are mutually buckled. The displayer is installed on the upper shell body. A gas exhaust pipeline is connected with a vacuumizing pipeline. A vacuum pipeline electromagnetic valve, a vacuum gauge and a vacuum pump are installed on the vacuumizing pipeline. A controller is further arranged in the shell. The controller is electrically connected with the electromagnetic valve, the displayer, the vacuum pump, a pressure sensor and a temperature sensor. The controller is connected with a remote mobile phone and a master control room through a wireless communication module.

Description

technical field [0001] The invention relates to a gas replenishing device for sulfur hexafluoride equipment, which is specifically used for regularly supplementing sulfur hexafluoride gas for sulfur hexafluoride circuit breakers, switch cabinets, GIS and other related sulfur hexafluoride equipment. Background technique [0002] During the use of sulfur hexafluoride circuit breakers, switchgears, GIS and other related sulfur hexafluoride equipment based on sulfur hexafluoride gas insulation technology, the phenomenon of insufficient internal gas pressure often occurs. The effect of reliable insulation cannot be achieved, and immediate and regular gas replenishment must be carried out; [0003] Specifically, because SF6 gas has excellent insulation and arc extinguishing properties, SF6 gas has been widely used in high-voltage electrical equipment in recent years. SF6 gas insulated equipment has become the development direction of high voltage electrical equipment. At present...

AI Technical Summary

Problems solved by technology

[0002] During the use of sulfur hexafluoride circuit breakers, switchgears, GIS and other related sulfur hexafluoride equipment based on sulfur hexafluoride gas insulation technology, the phenomenon of insufficient internal gas pressure often occurs. The effect of reliable insulation cannot be achieved, and immediate and regular gas replenishment must be carried out;

[0006] (1) The air path connection in Reference 1 is mainly realized by the integrated block, which has a compact structure and high precision. However, in actual use, it is found that if it is necessary to add functional components such as sensors to the air supply host of the air supply device, it is necessary to Manifolds are customized and modified or even completely discard the original reserved holes and channels, so the scalability is poor; but if the structure of the manifold is discarded, how to achieve the optimal fixed arrangement of the main components such as solenoid valves and pressure sensors is problems that need to be addressed;

[0007] (2) The (lithium battery) battery in Comparative Document 1 is fixed separately, without reliable fixation, and without a protective limit device. The air supply host is easy to make the battery loose when it is carried and used, causing damage to the core components; We have tried adding a cover to cover the battery, but the cover is not conducive to heat dissipation;

[0008] (3) There is no flow monitoring structure in the comparison document 1, so the inflation flow cannot be controlled very accurately. The start and stop of the solenoid valve can only be controlled based on experience and the display of the sulfur hexafluoride equipment meter, which is not conducive to the standardized control of inflation. It is easy to inflate too much or too fast due to negligence in observation, causing influence; (too much inflation must be deflated, and too fast inflation may easily cause instability of gas circuit equipment);

[0009] (4) Comparative Document 1 has no detection function for the gas purity of sulfur hexafluoride gas cylinders, because the core technology of the gas replenishment device is the gas replenishment host, so the gas replenishment host will be purchased in large quantities, and then the gas in the gas cylinder at the gas replenishment site The source of sulfur hexafluoride gas is relatively complicated, and whether the purity reaches the standard will directly affect the impact of the charged sulfur hexafluoride gas on the overall insulation reliability

[0010] (5) The handle in Reference 1 is on the side for portability, but with the increase of the expansion function of the air supply device, the side single handle method is not easy to lift after the weight increases, and on the other hand, it is necessary to lift the air supply main unit from the side Reliably reinforce the side alone, but also design feet to support the other side, which increases the cost of the portable structure

[0011] (6) The air inlet and the air charging port of the comparison document 1 are located on both sides of the air supply main engine shell, and the engineer takes care of too many positions during the connection and removal of the pipeline, which is not easy to operate; specifically, the engineer even It is necessary to observe, control, etc. from the front (the surface with the display screen) during work. The connection at both ends not only takes up too much space on both sides, but also makes the engineer (user) too busy to operate

[0012] (7) When using the technical product in Comparative Document 1, we found that there is often residual gas or water vapor in the pipeline, which leads to debris in the pipeline before inflation, which affects the effect of gas supplementation

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