A dual-hydraulic-cylinder pressure regulation and pressure maintenance system for pressure maintenance transfer and its control method
A dual hydraulic cylinder and hydraulic cylinder technology, which is applied to fluid pressure actuation system components, fluid pressure actuation devices, servo motors, etc., can solve problems such as inability to do further research, decomposition of natural gas hydrate, etc., and achieve a good pressure maintaining effect , low cost, easy to achieve effect
Active Publication Date: 2016-08-17
ZHEJIANG UNIV
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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
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Embodiment Construction
[0043] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments:
[0044] Such as figure 1 A pressure-regulating and pressure-maintaining system with dual hydraulic cylinders for pressure-holding transfer is shown, including hydraulic pumps, one-way valves, one-way solenoid valves, manual reversing valves 208, filters, pressure sensors, and accumulators 206, Proportional relief valve 212, relief valve 218, hydraulic cylinder and controller 301 can achieve constant pressure inside the pressure-holding transfer device; the pressure-holding transfer device includes a sampler 101, a cutting device 102, a ball valve I 103, and a ball valve II 104 connected in sequence , The clamping device 105, the manipulation chamber 106, and the sampler 101 and the cutting device 102, and the ball valve I 103 and the ball valve II 104 are respectively communicated with each other through a communicating device.
[0045] There are two hy...
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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, and particularly relates to a pressure-regulating and pressure-maintaining system with dual hydraulic cylinders for pressure-maintaining transfer and a control method thereof. Background technique [0002] With the increasing depletion of oil and coal resources on land, seabed resources have attracted more and more international attention as strategic reserves. Among them, the natural gas hydrate in deep sea sediments, as a high-quality alternative energy with abundant reserves, has attracted more and more attention in my country. Since natural gas hydrates exist stably under certain low temperature and high pressure conditions, when they are directly mined on 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] The existing deep-sea sediment sampler in China can take samples of sediment...
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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