Hydraulic driving device with moving cylinder body

Abstract

The invention relates to a hydraulic driving device with a moving cylinder body. The hydraulic driving device with the moving cylinder body comprises a fixed piston rod and a reciprocating hydraulic cylinder body, wherein a hydraulic piston is arranged in the hydraulic cylinder body, the right end of the piston rod is fixed to a fixed part, the left end of the piston rod extends into the hydrauliccylinder body and is connected with the hydraulic piston, and the interior of the hydraulic cylinder body is divided into a right first oiling cavity and a left second oiling cavity by the hydraulicpiston. The hydraulic driving device with the moving cylinder body has the advantages of the simple structure, light weight and small size, and the structural pattern that the hydraulic cylinder bodymoves and the piston rod is fixed is adopted, so that the hydraulic driving device is convenient to move in deep seas, and the problems of large occupied space, heavy body, complex system, low operating efficiency in deep seas and the like of an existing hydraulic driving device can be solved.

Description

technical field [0001] The invention relates to the field of offshore oil and gas exploitation, in particular to a cylinder moving hydraulic drive device. Background technique [0002] The deep sea ram blowout preventer is the core well control equipment to ensure the safe and reliable exploitation of deep sea oil and gas, and the hydraulic drive device for opening and closing the well of the ram blowout preventer is also an indispensable device. At present, the commonly used hydraulic power drive devices for ram preventers use the structure of piston rod movement and the hydraulic cylinder body is fixed. The driving force is mainly generated by the movement of the piston rod to promote the movement of hydraulic oil, which usually requires The hydraulic cylinder and piston rod are separately configured to form a complete hydraulic device, which is large in size, heavy in shape, complex in transmission, high in failure rate, and inconvenient in transportation, especially in d...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above technical problems, the present invention provides a cylinder-moving hydraulic drive device, which adopts a structural model in which the hydraulic cylinder moves and the piston rod is fixed. The structure is simple, light in weight, small in size, and easy to move in deep sea , which can solve the problems of existing hydraulic drive devices such as large space occupation, bulky body, complex system, and low operating efficiency in deep sea

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