| 摘要 |
The technical result of the invention is that of increasing the range of means for regulating the pressure of a liquid or gaseous medium undergoing transport, and providing automatic downstream pressure regulation within a pre-set range while preventing unauthorized access to change the set parameters. The pressure regulator comprises a housing (1) provided with a through cavity (2) and a member (3) at the first end (4) for connection to a pipe, a plug (5) rigidly connected to the housing (1) at the second end (6) and provided with a through cavity (7) and a member (8) for connection to the pipe on the opposite side of the housing (1), a collar (16) situated inside the cavity (2) of the housing (1) and rigidly fastened thereto and also being provided with a through cavity (17), a valve (9) mounted in the plug (5) such as to be capable of longitudinal movement and of maintaining a fixed position to allow the passage of the transported medium through the through cavity (7) of the plug (5), a sleeve (21) provided with a through cavity (22) and mounted in the through cavity (17) of the collar (16) such as to be capable of longitudinal movement and of interacting via one end surface (26) with the valve (9) in order to prevent the movement of the transported medium, and a compression spring (20) situated in the collar (16) such as to be capable of interacting with the sleeve (21), with compression in the direction of the movement of the sleeve (21) towards the valve (9). The area of projection onto a transverse plane of the end surface (26) of the sleeve (21) which is free to interact with the transported medium at the plug (5) end is less than the area of projection onto a transverse plane of the end surface (27) of the sleeve (21) which is free to interact with the transported medium at the first end (4) of the housing (1). |
