THRUST THROTTLE Russian patent published in 2023 - IPC F16K3/26 

FIELD: pneumohydraulic automation.

SUBSTANCE: invention relates to pneumohydraulic automation and can be used in automatic control systems to control the flow of liquid flows in rocket engines. The thrust throttle comprises a body with two guides for the sleeve, made coaxially, a movable sleeve with a gear rack, a drive roller with a gear, a needle - a profile body and a leash. An additional cylindrical surface is made on the movable sleeve, installed in the guide hole in the housing wall, and on which a spring-loaded lip seal is installed. The lip seal seals the movable connection and separates the high pressure cavity from the low pressure cavity, which simplifies the design and adjustment of the throttle during manufacture. The diameter of the outer cylindrical surface is equal to the diameter of the inner surface of the liner, therefore, the forces acting on the corresponding end surfaces of the liner in the cavities of low and high pressure of the working fluid are also balanced, there are no details in the design in the flow part - in the hole of the liner, as well as materials that do not work under cryogenic temperatures.

EFFECT: invention is aimed at reducing the moment of resistance to rotation of the throttle shaft, expanding the temperature range of the throttle and simplifying the design.

1 cl, 1 dwg