BODY MOVEMENT OVERSPEED LIMITER Russian patent published in 2017 - IPC F15B20/00 

FIELD: machine engineering.

SUBSTANCE: limiter is designed for the installation into the emergency protection system. The working piston changes the shutoff element position of the standard pipeline valves. The working chamber is made in the body. The volume of the working chamber depends on the working piston position. The working chamber is filled with the granular material. The granular material has the possibility to leave the working chamber only into the granular material discharge chamber through the opening. The opening internal area is smaller than the cross-section area of the working chamber. The granular material discharge chamber volume depends on the position of the discharge chamber piston. Pistons are coaxial. In the standby mode, the piston of the granular material discharge chamber is blocked by the mechanism. The mechanism loses the blocking function under the influence of the emergency factor. The working piston movement is carried out due to the granular material output from the working chamber to the granular material discharge chamber without using the energy external source.

EFFECT: reliability increase.

1 dwg