AUTONOMOUS THERMAL SHUT-OFF VALVE SYSTEM Russian patent published in 2023 - IPC F16K1/48 B33Y80/00 

FIELD: pipeline fittings.

SUBSTANCE: invention relates to pipeline fittings, and specifically to autonomous remotely controlled valve systems based on bellows valves, and is intended for use as autonomous remotely controlled shut-off valves on pipelines for various purposes in the chemical industry, water pipelines, oil pipelines and thermal power engineering. The substance of the invention lies in the fact that in the drive of a shut-off bellows valve of an autonomous thermal shut-off valve system, a drive stem is screwed onto the valve spindle, on which a movable cup is put on, connected to the body through a spring necessary to deform the thermoactuating element with a shape memory effect (SME) (cocking), and also connected to the drive stem by means of a latch, while when the latch is disconnected, the drive stem can move freely relative to the sleeve, which is supported by thermoactuating elements with SME, which are based on the valve body and are in a deformed (cocked) state, while the specified assembly is located inside the drive housing, on which a latch is also attached that can be connected to the drive rod, and in the initial state this latch is disconnected from the drive rod, while all the latches are spring-loaded, and to disconnect from the drive rod they are equipped with thermal actuators with SME, and all thermal actuators Elements with SME are an array of rectangular cross-section of cells of the type of a two-way spring of equal diameter, located along the perimeter of the rectangle and bounded on both sides by rectangular bases with a narrowing at the end of the base, and for the implementation of the phase transformation, thermal actuators with SME are heated using heating elements, battery operated from the mains, which is part of an autonomous thermal shut-off valve system and controlled by a power management unit.

EFFECT: proposed design, due to the presence of several disconnected latches, makes it possible to accelerate a single valve opening-closing cycle due to the separation of the drive stem and latches; the presence of a separate battery allows to use the system autonomously, without the need to connect to the central network; the power control unit of the system allows to remotely control the operation of the locking mechanism by sending commands to heat the thermal actuators with SME located under the valve cup and in each individual latch.

7 cl, 2 dwg