Patent ID: 7677085
Filing Date: 2010-03-16
Classification: F16K,G01M

Abstract:
1. A gas leak detection apparatus, comprising: a main body having a first side provided with an inlet and a second side provided with an outlet and having an inside formed with a detection chamber and a valve chamber which has a first side connected to the inlet and a second side provided with a conduit connected to the outlet and the detection chamber; a magnetically operated valve mounted in the valve chamber of the main body to close or open the conduit of the valve chamber; a magnetically exciting device mounted in the valve chamber of the main body to control operation of the magnetically operated valve; a pressure sensing device mounted in the detection chamber of the main body to sense a gas pressure contained in the conduit of the valve chamber to obtain a gas pressure signal; a pressure detector mounted in the detection chamber of the main body to receive the gas pressure signal from the pressure sensing device to control operation of the magnetically exciting device; the magnetically operated valve is operated to close the conduit of the valve chamber at a normal state so as to close the outlet of the main body at a normal state; the conduit is connected between the valve chamber, the outlet and the detection chamber; the pressure sensing device is movable upward and downward in the detection chamber of the main body by a gas pressure contained in the conduit of the valve chamber; the pressure sensing device has a bottom provided with a control point that is movable with the pressure sensing device, so that the control point has a level that is changed by movement of the pressure sensing device; the pressure detector detects the level of the control point of the pressure sensing device so as to detect the gas pressure contained in the conduit of the valve chamber.