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Hydraulic control system of double-ring-beam hydraulic bolt lifting device

A technology of hydraulic control system and lifting device, which is applied in the direction of fluid pressure actuation device, fluid pressure actuation system components, servo motor, etc., and can solve problems such as instability

Active Publication Date: 2022-02-18
KEEN OFFSHORE ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the problem of instability in the lifting process of the hull in the prior art, the present invention provides a hydraulic control system of a double-ring beam hydraulic bolt lifting device, which sets multiple circuits with different back pressures to ensure that the back pressure of the oil circuit meets the pressure of the lifting cylinder

Method used

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  • Hydraulic control system of double-ring-beam hydraulic bolt lifting device
  • Hydraulic control system of double-ring-beam hydraulic bolt lifting device
  • Hydraulic control system of double-ring-beam hydraulic bolt lifting device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Such as figure 1 Shown is an embodiment of a hydraulic control system of a double-ring beam hydraulic bolt lifting device, including a first ring beam lifting cylinder assembly 1, a second ring beam lifting cylinder assembly 2, a first ring beam bolt cylinder assembly 3, and a second ring beam lifting cylinder assembly. Beam bolt oil cylinder assembly 4 and oil supply assembly 5;

[0041] The fuel supply assembly 5 includes at least two sets of fuel supply pumps and an oil distribution module 501; the fuel supply pumps are respectively a first fuel supply pump 502 and a second fuel supply pump 503, and the first fuel supply pump 502 includes at least a first motor 5021 and the first hydraulic pump 5022, the second oil supply pump group 503 includes at least a second motor 5031 and a second hydraulic pump 5032; the oil distribution module 501 includes a first oil distribution valve group communicated with the first oil supply pump group 502 and a The second oil distribu...

Embodiment 2

[0060] Embodiment 2 of a hydraulic control system of a double-ring beam hydraulic bolt lifting device is different from Embodiment 1 in that there are at least two sets of first oil supply pump group 502 and second oil supply pump group 503 . When one set of oil supply assemblies 5 is damaged, another set of oil supply assemblies 5 can be used to keep the hydraulic system running.

[0061] The remaining features and working principles of this embodiment are consistent with those of Embodiment 1.

Embodiment 3

[0063] Embodiment 3 of a hydraulic control system of a double-ring beam hydraulic bolt lifting device differs from Embodiment 1 in that, preferably, both the first ring beam lifting cylinder assembly 1 and the second ring beam lifting cylinder assembly 2 are provided with at least four Group; the first ring beam lifting cylinder assembly 1 and the second ring beam lifting cylinder assembly 2 are both provided with a displacement sensor for detecting the position of the piston rod, the displacement sensor is electrically connected to the stroke controller, and the stroke controller is connected to the first rodless chamber combined valve 102. The first combined valve with rod cavity 104, the second combined valve with rodless cavity 202 and the second combined valve with rod cavity 204 are electrically connected. The displacement sensor can feed back the extended position of the piston rod of the oil cylinder where it is located to the stroke controller. By analyzing the inform...

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Abstract

The invention relates to a hydraulic control system of a double-ring-beam hydraulic bolt lifting device. The hydraulic control system comprises a first ring beam lifting oil cylinder assembly, a second ring beam lifting oil cylinder assembly, a first ring beam bolt oil cylinder assembly, a second ring beam bolt oil cylinder assembly and an oil supply assembly. Back pressure valve groups consisting of back pressure valves with different back pressure thresholds are arranged on oil return paths of rod cavities and rodless cavities of lifting oil cylinders of the first ring beam lifting oil cylinder assembly and the second ring beam lifting oil cylinder assembly, so that the hydraulic system can provide back pressure matching the pressure of the oil cylinders when the lifting oil cylinders return oil; therefore, no matter how the external load changes, the lifting oil cylinders keep the movement stability, and the risk of falling is avoided.

Description

technical field [0001] The invention relates to the field of marine lifting platforms, and more specifically, to a hydraulic control system of a double-ring beam hydraulic bolt lifting device. Background technique [0002] Offshore elevating platforms are generally suitable for operations in shallow sea areas. Due to their advantages of low cost, less steel consumption, unaffected by environmental conditions and high efficiency, they are widely used in offshore oil development. The marine lifting platform is usually provided with a lifting device for controlling the lifting or lowering of the lifting platform. The double-ring beam hydraulic bolt lifting device is widely used in lifting platforms. The lifting device includes: an upper ring beam, a lower ring beam, an upper pin, a lower pin, and a lifting cylinder. Among them, the upper pin and the lower pin can be inserted on the leg of the lifting platform through the pin cylinder to fix the moving ring beam or the fixed r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B11/22F15B13/06F15B15/28F15B21/02
CPCF15B11/22F15B13/06F15B15/2815F15B21/02
Inventor 吴平平张帅君陆军谭孝维兰秀国黄银来吴柏荣刘会涛苏伟民赖雨薇
Owner KEEN OFFSHORE ENG CO LTD