| 摘要 |
FIELD: gas oil producing and transfer facilities. ^ SUBSTANCE: proposed drive is designed for shutoff and control valves used on gas and oil pipelines. Drive contains series-connected electropneumatic control device, jet motor, regulator and slotted-link screw slewing mechanism. Rotor of jet motor and first stage of regulator are arranged in chamber connected with exhaust channel of jet motor, and output shaft of first stage of regulator is connected with subsequent stages of regulator through sealing device. Electropneumatic control device contains explosion proof chamber, switching elements, electromagnets, pneumatic valves, input shaft passing inside explosionproof chamber and levers coupled with said shaft and arranged outside explosionproof chamber and permanent magnets secured on levers. ^ EFFECT: enlarged sphere of application, improved reliability and convenience in operation. ^ 10 cl, 5 dwg |
