Underwater hydraulic reversing valve

Abstract

The invention relates to a submarine hydraulic directional control valve, which is mainly used for a petroleum deep water well drilling well control device and comprises two parts of a hydraulic pilot valve and a fluid control main valve, wherein, the valve body of the pilot valve is fixed on the upper part of a main valve seat; the upper part of the valve body of the pilot valve is fixed with an electromagnetic control module; the valve body of the pilot valve is provided with three oil lines, the make-and-break of the oil lines is controlled by the electromagnetic control module fixed at the junction of the three oil lines; a piston is arranged in the valve body of the pilot valve and connected with a piston rod, and the other end of the piston rod is fixed with a columnar valve core. The main valve seat is provided with an oil guide port, an oil supply port, a drainage port and a functional port; a valve hood is fixed in the main valve seat; and the valve core is positioned in the cavity of the valve hood. The submarine hydraulic directional control valve of the invention has the advantages that the oil guide port, the oil supply port and the functional port are all arranged at one side of the main valve seat, which is convenient for integration design of all the oil lines and modularization installment; the valve is mainly made of seawater corrosion resisting stainless steel materials, has good inoxidizability, reliable operation and long service life, and is applicable to the deep water well control device.

Description

technical field [0001] The invention relates to the technical field of petroleum drilling and production machinery, in particular to a valve for a deep-water drilling well control device, in general, a hydraulic control valve for controlling the main function circuit of an underwater hydraulic control system. Background technique [0002] Due to the shortage of oil resources in the world, especially onshore oil resources are becoming less and less, all countries are turning their attention to the sea. However, due to the slow development of the domestic offshore drilling equipment manufacturing industry, as the working water depth increases, the existing equipment of domestic enterprises can no longer meet the needs of offshore development. Moreover, most of the equipment for offshore drilling relies on imports, which is costly and subject to many technical restrictions. [0003] At present, various valves in the domestic market are mainly used on land, and the valves that ...

AI Technical Summary

Problems solved by technology

However, due to the slow development of the domestic offshore drilling and production equipment manufacturing industry, with the increasing depth of working water, the existing equipment of various domestic enterprises can no longer meet the needs of offshore development.

Moreover, most of the various equipment for offshore drilling relies on imports, which is costly and subject to many technical restrictions.

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