SYSTEM FOR REGULATING PRESSURE IN A FLUID SUPPLY PIPE

摘要

The present invention relates to a system for regulating pressure in a fluid supply pipe, comprising a valve operated by a double acting piston cylinder and in which the chamber of the cylinder, the pressure of which acts on the piston to move the rod in the direction for closing the valve, communicates with transmission means for transmitting the instantaneous hydraulic pressure at a point the pipe, whereas the chamber of the cylinder, the pressure of which acts on the piston to move the rod in the direction for opening the valve, is connected to an energy accumulator accumulating energy in the form of pressurized gas at a predetermined pressure P0, which can be regulated.

主权项

1. A system (1) for regulating pressure in a fluid supply pipe (3), comprising a hydraulic valve (2) with mechanical means (4) for actuation thereof and a double acting piston cylinder (5), with first and second chambers (5a, 5b) and a rod (6) connected to the mechanical actuation means of said valve, the system further comprising transmission means (7) for transmitting the instantaneous hydraulic pressure in at least one point of the pipe to one of the chambers of the cylinder (5), the system being characterized in that
the chamber (5b) of the cylinder (5), the pressure of which acts on the piston to move the rod (6) in the direction for closing the valve (2), is the chamber that communicates with the transmission means (7) for transmitting the instantaneous hydraulic pressure of the pipe; and in that the chamber (5a) of the cylinder (5), the pressure of which acts on the piston to move the rod in the direction for opening the valve (2), is connected to an energy accumulator (11) accumulating energy in the form of pressurized gas (10) at a predetermined pressure P0; the system comprising means (12) for regulating said determined pressure P0.