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Double-hydraulic-cylinder pressure regulating and maintaining system for pressure maintaining transfer and control method thereof

A technology of dual hydraulic cylinders and hydraulic cylinders is applied in the directions of fluid pressure actuating system components, fluid pressure actuating devices, servo motors, etc., which can solve the problems of natural gas hydrate decomposition and inability to conduct further research, and achieves low cost and high maintenance. The pressure effect is good and the effect of precise control is achieved

Active Publication Date: 2015-04-29
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since natural gas hydrates exist stably in certain low-temperature and high-pressure conditions, when they are directly exploited to the sea surface at normal temperature and pressure, most of the natural gas hydrates in them will decompose, and further research cannot be done

Method used

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  • Double-hydraulic-cylinder pressure regulating and maintaining system for pressure maintaining transfer and control method thereof
  • Double-hydraulic-cylinder pressure regulating and maintaining system for pressure maintaining transfer and control method thereof

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Embodiment Construction

[0043] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0044] Such as figure 1 A dual hydraulic cylinder pressure regulation and pressure maintenance system for pressure maintenance and transfer is shown, including a hydraulic pump, a one-way valve, a one-way solenoid valve, a manual reversing valve 208, a filter, a pressure sensor, an accumulator 206, Proportional overflow valve 212, overflow valve 218, hydraulic cylinder and controller 301 can realize constant pressure inside the pressure maintaining transfer device; the pressure maintaining transfer device includes sampler 101, cutting device 102, ball valve I 103, ball valve II 104 connected in sequence , the clamping device 105 , the manipulation chamber 106 , and the connection between the sampler 101 and the cutting device 102 , and between the ball valve I 103 and the ball valve II 104 are respectively communicated by means of connectors.

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Abstract

The invention relates to the technical field of hydraulic transmission, and aims to provide a double-hydraulic-cylinder pressure regulating and maintaining system for pressure maintaining transfer and a control method of the double-hydraulic-cylinder pressure regulating and maintaining system. The double-hydraulic-cylinder pressure regulating and maintaining system for pressure maintaining transfer comprises hydraulic pumps, one-way valves, one-way solenoid valves, a hand-operated reversing valve, filters, pressure sensors, an energy accumulator, a proportional overflow valve, an overflow valve and hydraulic cylinders. The control method comprises the steps of a pressurizing and pressure maintaining process of a pressure maintaining transfer device, a pressurizing and pressure maintaining process of a sub-sample transfer tube, and a process of installation of a communicating device between a ball valve I and a ball valve II and pressurization. According to the double-hydraulic-cylinder pressure regulating and maintaining system for pressure maintaining transfer and the control method of the double-hydraulic-cylinder pressure regulating and maintaining system, the mode that the seawater hydraulic cylinder and the oil-filled hydraulic cylinder are combined is adopted, the ratio of the piston area of the oil-filled hydraulic cylinder to the piston area of the seawater hydraulic cylinder is increased, the working pressure in the hydraulic cylinder II can be remarkably reduced, and therefore selection of a corrosion-resistant high-pressure seawater pump with high manufacturing cost is avoided, and the parameter requirement and the manufacturing cost of the hydraulic oil pumps are remarkably reduced.

Description

technical field [0001] The invention relates to the technical field of hydraulic transmission, in particular to a dual hydraulic cylinder pressure regulating and maintaining system for maintaining and transferring pressure and a control method thereof. Background technique [0002] With the depletion of oil, coal and other resources on land, seabed resources as a strategic reserve have attracted more and more international attention. Among them, natural gas hydrate in deep-sea sediments, as a high-quality alternative energy source with abundant reserves, has attracted more and more attention in my country. Since natural gas hydrates exist stably in certain low-temperature and high-pressure conditions, when they are directly exploited to the sea surface at normal temperature and pressure, most of the natural gas hydrates in them will decompose, and further research cannot be done. [0003] China's existing deep-sea sediment sampler can take samples such as sediment, water, g...

Claims

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Application Information

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IPC IPC(8): F15B1/02F15B11/17F15B21/02
CPCF15B1/02F15B11/17F15B21/02
Inventor 陈刚陈家旺刘俊波罗高生顾临怡
Owner ZHEJIANG UNIV
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