| 主权项 |
1. A pressure fuse comprising:
a housing having an inlet and an outlet; a valve in fluid communication with the inlet; a trip mechanism comprising a hinge and a piston riding in a bore, and an increase in the pressure within the housing moves the piston such that it engages the hinge and the trip mechanism moves from a first state to a second state; the trip mechanism in contact with the valve and having at least two states, wherein in the first state, the valve is in an open position thereby allowing fluid flow into the inlet, and in the second state, the valve is in a closed position thereby blocking fluid flow from the inlet, wherein when the pressure within the housing is greater than or equal to a trip pressure, the trip mechanism moves from the first state to the second state; the hinge comprises a sliding pivot, a center pivot, a fixed pivot, a first piece connecting the sliding pivot to the center pivot and a second piece connecting the center pivot to the fixed pivot; and wherein the sliding pivot is in contact with the valve, and movement of the sliding pivot towards the fixed pivot closes the valve. |
