SHUTOFF VALVE WITH INDEPENDENT SEALING SYSTEM Russian patent published in 2013 - IPC F16K31/64 

FIELD: machine building.

SUBSTANCE: shutoff valve with an independent sealing system consists of a housing with inlet and outlet connection pipes, a shutoff element, a seat and a temperature sensing element. The latter is made from material having shape memory effect. A temperature sensing element control device is independently controlled. The temperature sensing element is made in the form of a hollow flattened cylinder. One end surface of the above cylinder is fixed in the seat, and the other one is located with a gap relative to the shutoff element. Along the perimetre of inner surface of the temperature sensing element there arranged in a sealed casing is a temperature sensing element control device. The above device is made of Peltier elements that are electrically connected in series.

EFFECT: excluding the possibility of leaks under working medium high temperature and pressure conditions.

1 cl, 6 dwg