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A Hydraulic Cylinder Type Passive Heave Compensation System Based on Hydraulic Transformer

A passive heave compensation and hydraulic transformer technology, which is applied in the direction of fluid pressure actuators, servo motors, servo motor components, etc., can solve the problem that the passive heave compensation system cannot achieve compensation performance, the ability of load heave movement is poor, and the mother ship The problem of limited deck area can avoid the collision between the piston of the compensation cylinder and the cylinder head, reduce the accuracy requirements, and avoid the back pressure caused by insufficient oil.

Active Publication Date: 2019-02-22
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the actual system performs heave compensation, the volume change of the rodless cavity causes the pressure to change, resulting in poor ability of the system to reduce load heave motion and low compensation accuracy
CN105275414A proposes a method for increasing the gas volume of the accumulator to reduce the method for compensating the pressure change in the rodless cavity of the oil cylinder, but this method increases the volume of the entire system at the same time, and the deck area of ​​the mother ship where the system is installed is limited
In addition, when the sea state changes, the passive heave compensation system cannot achieve the optimal compensation performance
Therefore, the current passive heave compensation system has the problems of low compensation accuracy and poor adaptability

Method used

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  • A Hydraulic Cylinder Type Passive Heave Compensation System Based on Hydraulic Transformer

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Embodiment Construction

[0021] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0022] A hydraulic cylinder passive heave compensation system based on a hydraulic transformer, used to compensate the heave of the towing body, including a winch 1, a compensation cylinder 3, an accumulator 9 and an oil tank 7, the winch 1 is fixed on the mother ship, and the winch 1 is compensated by The oil cylinder 3 is connected with the drag body, and also includes a hydraulic transformer 8, a rod chamber safety control valve 4, a rodless chamber safety control valve 5, a hydraulic motor safety valve 6, an accumulator safety valve 10, an overflow valve 11, an oil inlet Oil filter 12, charge pump 13, electric motor 14, charge check valve 15. Wherein, the hydraulic transformer 8 includes a primary motor 81 and a secondary motor 82 connected to the output shaft, the primary motor 81 and the secondary motor 82 are variable hydraulic motors; ...

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Abstract

The invention discloses a hydraulic cylinder type passive heave compensation system based on a hydraulic transformer. The hydraulic cylinder type passive heave compensation system based on the hydraulic transformer comprises a winch, a pulley, a compensating cylinder, a safety control valve with a rod cavity, a safety control valve without a rod cavity, a hydraulic motor safety valve, a fuel tank,the hydraulic transformer, an energy accumulator, an energy accumulator safety valve, an overflow valve, an oil outlet oil filter, an oil supplementary pump, a motor, an oil supplementary one-way valve, a pressure sensor without a rod cavity, an energy accumulator pressure sensor, a primary motor swash plate tilt sensor, a secondary motor swash plate tilt sensor, a mother ship acceleration sensorand a controller. The hydraulic transformer is installed between the compensating cylinder and the energy accumulator. According to the hydraulic cylinder type passive heave compensation system basedon the hydraulic transformer, the heave compensation is achieved by controlling the tilt angles of variable motors of the hydraulic transformer so as to keep the pressure of the compensating cylinderwithout a rod cavity constant. Compared with a traditional passive heave compensation system, the hydraulic cylinder type passive heave compensation system based on the hydraulic transformer has theadvantages of high compensation accuracy, low installed power, good adaptability and high reliability, and is applicable to working conditions of large depth, large load and changing sea conditions.

Description

technical field [0001] The invention relates to the marine technical field of an underwater towing system, in particular to a hydraulic cylinder type passive heave compensation system based on a hydraulic transformer. Background technique [0002] Disturbed by waves, ocean currents, and sea winds, surface ships will move in six degrees of freedom in the ocean. Among them, the movement in the vertical direction, that is, the heave movement, makes the depth of the towed body and the tension of the towed cable of the underwater towed system drastically change. If the heave motion of the towing body is not compensated, the working efficiency of the towing body will be reduced, and even the towing cable will be broken or the equipment will be damaged, resulting in serious economic losses and safety accidents. Therefore, it is necessary to adopt heave compensation technology to ensure the safe and reliable operation of the underwater towing system. [0003] The heave compensatio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B11/16F15B1/04F15B13/02
CPCF15B1/04F15B11/166F15B13/02
Inventor 魏建华于欢方锦辉孙戈张杭军冯瑞琳
Owner ZHEJIANG UNIV
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