A deep-water winch wave compensation hydraulic drive system with load adaptability

Abstract

The invention discloses a deep water winch wave compensation hydraulic drive system with load adaptability, which includes a main lifting circuit, a braking circuit and a constant tension control circuit; in the main lifting circuit, a three-position four-way electromagnetic valve is used to select a working overflow valve , realize the switching of the system back pressure value under different working conditions, effectively reduce the power consumption of the system; the overflow valve is used to control the back pressure of the constant tension control circuit, the inlet of the fourth overflow valve is connected to the hydraulic control check valve, and the hydraulic control check valve Controlled by a two-position three-way solenoid valve, it can effectively isolate the constant tension circuit from the main lifting circuit when it is not working, and at the same time ensure the rapidity of the constant tension circuit when it is put into work; The stroke of the variable mechanism of the variable hydraulic motor changes the displacement of the hydraulic motor, thereby changing the output torque of the hydraulic motor. At the same time, the variable pump set changes the output power according to the hydraulic power demand of the variable motor to realize the stepless adjustment of the output capacity of the hydraulic winch.

Description

technical field [0001] The invention relates to a hydraulic drive system of a deep water winch, in particular to a wave compensation hydraulic drive system of a deep water winch with load adaptability. Background technique [0002] With the development of my country's marine engineering industry, the development of marine resources has moved from shallow seas to deep seas, even ultra-deep seas, and the difficulty of deep sea construction has also increased. During deep-sea construction, ships or offshore platforms will sway and heave irregularly with wind, waves and ocean currents, so that the load of the deep-water winch is always in a changing state during lowering and installation operations. In addition, when the deep-water winch is lowered for installation, as the depth of the load changes, the buoyancy of the load will change, and the weight of the cable for hoisting the load will also change. Then, if the output capacity of the winch remains unchanged, the tension in ...

AI Technical Summary

Problems solved by technology

For the solution of hydraulic cylinder plus accumulator, the pressure of the accumulator has a certain corresponding relationship with the set value of constant tension. To change the set value of constant tension, the gas pressure of the accumulator must be changed. In actual engineering The gas pressure in the accumulator is generally set in advance, and it is difficult to quickly adjust it online

For the scheme of hydraulic motor plus relief valve, hydraulic motor plus common relief valve is more widely used. The opening pressure of the relief valve can only be manually adjusted by the staff, and it is difficult to quickly adjust online; Chinese patent CN102153027A published A hydraulic winch stepless adjustment constant tension device, which uses a pilot-controlled proportional relief valve to adjust the pressure on the side of the rope, so as to achieve the purpose of quickly adjusting the constant tension setting value online, but when the load is small, the proportional relief valve overflows The flow is large, which can easily cause the system to heat up and cause power waste

Images