Hydraulic control system for a stowing pipeline coupling

摘要

The hydraulic control system is intended for a hydraulically adjustable coupling with which the stowing pipes of a stowing pipeline which are connected to form a piping string are alternately connected and released. The coupling has a displacing cylinder 1 for displacing the stowing pipes in the axial direction, as well as a pivoting cylinder 2 with which the stowing pipes released from one another can be pivoted transversely to the axial direction for the discharge of the stowing waste. Both cylinders 1 and 2 can be controlled together in mutual dependency by an operating element 3. In the swing-out position of the operating element 3, the pivoting cylinder 2 only extends when the displacing cylinder 1 has extended, and in the other operating position the displacing cylinder 1 only retracts when the pivoting cylinder 2 has retracted. A 3/2-way valve 5 is actuated by the operating element 3. Furthermore, a 3/2-way valve 9 which can be acted upon by an operating piston 8, the non-return valves 7 and 10, which can be opened hydraulically, and the limit switches 6 and 12 are provided for the control system. <IMAGE>