| 摘要 |
<p>A method for preventing sulfur hexafluoride gas liquefaction of a high-voltage electrical equipment. A sulfur hexafluoride auxiliary gas storage tank (1), a heating apparatus (3) and a connection pipe (2) are provided on the high-voltage electrical equipment, and a sulfur hexafluoride gas chamber (12) of the high-voltage electrical equipment is in communication with the sulfur hexafluoride auxiliary gas storage tank through the connection pipe. By way of detecting the ambient temperature, the gas temperature and the gas density, when the reduction of the ambient temperature of a high-voltage electrical equipment body makes the sulfur hexafluoride gas liquefaction likely, the heating apparatus begins to heat a sulfur hexafluoride auxiliary gas storage tank, and then the temperature of the gas inside the auxiliary gas storage tank rises, so that a temperature difference is produced between the gas inside the auxiliary gas storage tank and the sulfur hexafluoride gas inside the sulfur hexafluoride gas chamber and then heat convection is formed, and heat is quickly transferred directly to the sulfur hexafluoride gas chamber of the sulfur hexafluoride high-voltage electrical equipment. Thus the temperature of the sulfur hexafluoride gas inside the sulfur hexafluoride gas chamber is increased; the liquefaction or excessive liquefaction of the gas is prevented; and the safe operation of the high-voltage electrical equipment is guaranteed.</p> |
