A marine electromechanical static pressure control unit

Abstract

An electromechanical static pressure control unit for a ship is used for controlling a steering engine of the ship to work and comprises a first EHA integrated valve group, a second EHA integrated valve group and a manual emergency valve group. The first EHA integrated valve group and the second EHA integrated valve group are redundant backups for each other and control a first hydraulic cylinderand a second hydraulic cylinder on the ship to work, and the manual emergency valve group is used for emergent control on working of the first hydraulic cylinder and the second hydraulic cylinder, exhausting and filling of the first EHA integrated valve group and the second EHA integrated valve group and supplementing of hydraulic oil of the first EHA integrated valve group and the second EHA integrated valve group. Using a steering engine controlled by the control unit on the ship has obvious technical advantages; when the control unit is used to replace a hydraulic energy source and pipelinesystem needing frequent maintenance, personnel allocation on the ship can be reduced, reliability can be improved effectively, and vibration noise caused by the hydraulic system is lowered greatly.

Description

Technical field [0001] The invention relates to an electromechanical static pressure control unit for ships, belonging to the technical field of ship steering gear control. Background technique [0002] The existing ship steering device in our country uses a valve-controlled hydraulic system. By changing the size of the valve port of the servo valve, the flow of the hydraulic system into the actuator is adjusted, and the speed and displacement of the hydraulic cylinder are controlled to obtain the required rotation speed and working angle of the steering device. . However, due to the limitation of the inherent structure of the servo valve, it has many insurmountable problems: [0003] 1. Servo valves have high requirements for hydraulic oil. Oil contamination during work can easily wear the servo valve and reduce work reliability. This requires improved oil filtering technology, thereby increasing costs. [0004] 2. The valve control system requires a set of constant pressure oil...

AI Technical Summary

Problems solved by technology

Oil pollution during work is easy to wear the servo valve and reduce the reliability of work

This requires improved oil filtration technology, which increases costs

[0004] 2. The valve control system requires a set of constant pressure oil source, which increases the system space and complexity, increases the cost of the system, and also limits its application in ships and other special application places with small installation space

[0005] 3. The maximum load pressure provided by the servo valve of the valve control system is only two-thirds of the oil source pressure, which makes it impossible to effectively utilize a large amount of system energy

[0006] 4. The energy loss of the valve control system is serious, the throttling and heating are relatively large, and the efficiency is low

[0007] 5. Servo valve has high processing precision and inconvenient maintenance

Images