초록 ▼

A seismic safety valve has a housing with a fluid inlet, a fluid outlet and a fluid passageway interconnecting the inlet and outlet. A recess is formed inside the housing along the fluid passageway, with a valve seat located adjacent to and below the recess. A valve member, made of a magnetic materi

A seismic safety valve has a housing with a fluid inlet, a fluid outlet and a fluid passageway interconnecting the inlet and outlet. A recess is formed inside the housing along the fluid passageway, with a valve seat located adjacent to and below the recess. A valve member, made of a magnetic material, is in the fluid passageway and movable between a first position in the recess and a second position on the valve seat. The valve member closes the fluid passageway in the second position and opens the fluid passageway in the first position. The recess supports the valve member so that the valve member is movable from the recess upon the housing being subjected to a predetermined amount of seismic activity under forces generated by the predetermined amount of seismic activity and gravity. At least one electromagnet is on the housing outside of the fluid passageway. The electromagnet can be used to automatically activate the valve by moving the valve member, or may be used to reset the valve after the valve has been activated.

대표청구항 ▼

[ What is claimed is:] [1.] A seismic safety valve comprising:a housing having a fluid inlet and a fluid outlet and a fluid flow path extending between said fluid inlet and said fluid outlet;a valve seat in said housing along said fluid flow path;a valve member support in said housing adjacent to sa

[ What is claimed is:] [1.] A seismic safety valve comprising:a housing having a fluid inlet and a fluid outlet and a fluid flow path extending between said fluid inlet and said fluid outlet;a valve seat in said housing along said fluid flow path;a valve member support in said housing adjacent to said valve seat;a valve member movable between a first position on said valve member support in which fluid flow along said fluid flow path is not cut off and a second position on said valve seat in which fluid flow is cut off between said fluid inlet and said fluid outlet, wherein said valve seat and said valve member support are positioned relative to each other such that the application of a seismic disturbance to said housing can cause said valve member to be dislodged from said valve member support and fall by gravity on to said valve seat; andan electromagnetic actuator that is positioned at a location relative to said valve member support such that when said valve member is in said first position and a current pulse is applied to said electromagnetic actuator said valve member is moved from said first position to a degree sufficient to allow said valve member to move to said second position.