LOCKING ACCESSORIES Russian patent published in 2010 - IPC F16K31/70 F16K17/38 F16K11/04 

FIELD: mechanical engineering.

SUBSTANCE: invention refers to pipeline accessories and is intended for oil and gas pipelines, heat power engineering, engine and turbo-engineering and for chemical industry. Locking accessories consist of a case with two channels of supply, of a channel of working medium withdrawing and of a circular bimetallic element. The circular bimetallic element is located in the centre of the case in stops preventing its horizontal travel. Locking valves are installed in the channels of working medium supply; said valves are designed to travel along axis of locking accessories. The valves are connected with the circular bimetallic element via rods, and they contact seats. The seats are arranged at input of the channels. The circular bimetallic element consists of an external layer made out of material with a shape memory effect and internal layer made out of material, coefficient of volume expansion of which is less, than that of material with the shape memory effect.

EFFECT: expanded functionalities and simplification of design of locking accessories.

2 cl, 2 dwg