| 摘要 |
Disclosed is a pressure-reducing safety valve for a liquefied gas tank, belonging to the field of valve manufacturing. The pressure-reducing safety valve is structurally divided into a magnetic core sleeve (6), a sealing sleeve (8), a valve cover (15) and a valve body (1), wherein the sealing sleeve is connected to the valve body in a threaded manner. When the pressure-reducing safety valve for a liquefied gas tank works normally, a sealing cap is separated from the valve body, and when the external environmental temperature rises abnormally, a temperature-sensing element (11) extends, wherein the generated elasticity drives the valve cover and a magnetic ring (16) to move axially upwards as a whole, and the magnetic ring generates a downward repelling force on an inner magnetic core (5) so as to push the magnetic core sleeve to move downwards, so that the sealing cap (3) mounted at the bottom end of the magnetic core sleeve blocks a gas outlet of the valve body, thereby cutting off the supply of liquefied petroleum gas. The same effect can also be achieved by manually pulling the valve cover to move same upwards instead of using the temperature-sensing element. |
