20090248210 | TIME PULSE PILOT FOR PRESSURE REGULATING CONTROL VALVE - In the industry, a way to control fluid pressure circulating through pipes is by means of pilot operated diaphragm pressure controlling valves. This invention specifically relates to pilots of these valves. The pilots of the previous art are mechanical devices comprising diaphragms, springs, throttling elements and slideable shafts. These mechanical devices lose reliability because they get blocked, they deregulate and break; thereby requiring frequent maintenance, and moreover, they do not have the capacity of communication with other control processes. The pilot of the present invention solves these problems because it basically comprises electronic elements which require minimal maintenance and it possesses a capacity to send data signals to other control processes. The invention consists of a pressure regulating pilot characterized by the communication of the valve chamber to high or low pressure sources being performed by time pulses during which throttling elements which communicate the chamber with such sources are opened. The frequency and duration of pulses are determined by an electronic controller, which also reads the pressure to be controlled through a pressure sensor and then compares this value to a pressure target value previously received by the controller. The electronic controller has the capacity to send and receive data signals to communicate with other devices. | 10-01-2009 |