PRESSURE CONTROLLER Russian patent published in 2012 - IPC G05D16/08 

FIELD: construction.

SUBSTANCE: invention relates to a pressure controller (reducer) designed for controlled reduction of transported medium pressure in networks of cold and hot water supply, water heating, pneumatic drives of compressed air, and also in other process pipelines that transport liquids and gases. The pressure controller comprises a body 1, arranged with a through cavity 2 and an element 3 at the side of the first end 4 for connection to the pipeline, a plug 5, rigidly connected with the body 1 at the side of its second end 6, arranged with a through cavity 7 and an element 8 for connection to the pipeline at the side opposite to location of the body 1, a shell 16, arranged inside the cavity 2 of the body 1 and rigidly fixed in it, also made with a through cavity 17, a valve 9, installed in the plug 5 as capable of longitudinal displacement and fixation of position with provision of transported medium passage via the through cavity 7 of the plug 5, a bushing 21, arranged with a through cavity 22 and installed in the through cavity 17 of the shell 16 with the possibility of longitudinal displacement and interaction of one end surface 26 with the valve 9 for prevention of transported medium motion, a compression spring 20, arranged in the shell 16 with the possibility of interaction with a bushing 21 with compression in direction of bushing 21 movement towards the valve 9. The area of projection to the transverse plane of the end surface 26 of the bushing 21, free for interaction with the transported medium at the side of the plug 5, is less than the area of projection at the transverse plane of the end surface 27 of the bushing 21, free for interaction with the transported medium at the side of the first end 4 of the body 1.

EFFECT: expanded arsenal of facilities to control pressure of transported liquid or gaseous medium, which provides for automatic control of pressure in a range tuned previously in a post-mode with elimination of possibility of non-authorised access to variation of tuning parameters.

9 cl, 2 dwg