Hydraulic system applied to multi-spud leg lifting mechanism

A lifting mechanism and hydraulic system technology, applied in the field of hydraulic system, can solve the problem that only one row can be raised or lowered, and achieve the effects of fast lifting speed, stable operation and high transmission efficiency

Inactive Publication Date: 2011-11-16
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the traditional hydraulic jacking type lifting mechanism, the lifting cylinder and the bolt cylinder on each leg are synchronously acting respectivel

Method used

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  • Hydraulic system applied to multi-spud leg lifting mechanism
  • Hydraulic system applied to multi-spud leg lifting mechanism
  • Hydraulic system applied to multi-spud leg lifting mechanism

Examples

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Example Embodiment

[0027] A specific embodiment of the present invention will be further described in detail below with reference to the accompanying drawings:

[0028] Such as figure 2 As shown, a hydraulic system of the present invention applied to a multi-leg lifting mechanism includes a main oil circuit, a bolt oil circuit and a control oil circuit, wherein:

[0029] The main oil circuit includes high-pressure pump 10, M-type functional three-position four-way electro-hydraulic directional valve 20, balance valves 27, 34, reverse-connected hydraulic control check valves 29, 32, one-way throttle valves 30, 33, A lifting cylinder group 4 and a second lifting cylinder group 6. The input end of the high pressure pump 10 is in communication with the oil tank, and the output end is in communication with the P port of the M-type functional three-position four-way electro-hydraulic directional valve 20. The T port of the M-type functional three-position four-way electro-hydraulic directional valve 20 ...

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Abstract

The invention discloses a hydraulic system applied to a multi-spud leg lifting mechanism and relates to the field of self-elevating offshore drilling platforms and wind turbine installation vessels. The hydraulic system comprises a main oil passage, a bolt oil passage and a control oil passage, wherein the main oil passage comprises a high-pressure pump, an M-shaped function three-position four-way electro-hydraulic reversing valve, a first lifting cylinder group and a second lifting cylinder group; the bolt oil passage comprises a bolt medium-pressure pump, two Y-shaped function three-position four-way electromagnetic reversing valves, a first bolt cylinder group and a second bolt cylinder group; and the control oil passage comprises a control medium-pressure pump, a two-position four-way electromagnetic reversing valve and a hydraulic reversing valve with a one-way damper, which are sequentially connected. By applying the system, the two groups of lifting cylinders and bolt cylinders work cooperatively, a platform main body can ascend or descend for two strokes after one working condition is completed, and the motion of the platform main body can be regarded as continuous motion(the intermittent time is shorter relative to the climbing time), therefore the lifting speed is high and the transmission efficiency is high.

Description

technical field [0001] The invention specifically relates to a hydraulic system applied to a multi-leg lifting mechanism in fields such as jack-up offshore drilling platforms and wind power installation ships. Background technique [0002] With the increasing energy problems, people pay more and more attention to oil and gas development, and with the in-depth study of offshore survey work, the ocean has become the development area of ​​global oil and gas resources. The exploration and development of offshore oil and gas basically takes the offshore platform as the carrier, so the governments and enterprises of various countries are increasing the research on the offshore platform. Jack-up offshore platforms play a very important role in my country's offshore oil and gas development. There are more than a dozen jack-up offshore platforms operating in the Bohai Sea and the South China Sea. In addition to drilling functions, some have been transformed into production platforms....

Claims

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Application Information

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IPC IPC(8): B66C23/80B66C23/52E02B17/08
Inventor 陈定方张争艳车畅张华张晶华李涛涛陈天沛谢瑜娴阳学进柯柏杰陆宁洲
Owner WUHAN UNIV OF TECH
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