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What is a hydraulic power unit?

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What is a hydraulic power unit?

Date of release:2019-07-08 Author: Click:

Hydraulic machinery industry, mechanical and electrical industry is a noun.Hydraulic power can be used by the power transmission mode, known as hydraulic transmission.Hydraulic pressure can also be used as a control mode, called hydraulic control.Hydraulic control is a pressure liquid as the control signal transmission mode, hydraulic power unit operation is relatively simple mechanical power unit.What is a hydraulic power unit?

The hydraulic power unit (HPU) is used as an oil supply device connected to multiple hydraulic cylinders through an external piping system to control multiple sets of valves.Fuel tank, oil pump and accumulator form a separate closed power system.Gas stations can be equipped with a PLC control system that controls all internal hydraulic functions and generates signals for exchange with the control room (DCS).A control element such as a hydraulic servo valve is mounted directly on the hydraulic cylinder through which high-pressure oil is pressed into or out of the cylinder.

Under normal circumstances, the oil pump supplies oil to the system, automatically maintains the rated pressure of the system, and realizes the valve holding function in any position through the lock of the control valve.In the working state, the hydraulic actuator is controlled by the solenoid valve, the system command signal solenoid valve starts to control the oil pressure and energy release of the accumulator, so as to control the cylinder slide valve, and drive the valve through the mechanical transmission mechanism to achieve rapid closure, normal opening and closing and test control.High-pressure cylinders may be fixed to the stem or used directly as actuators.Excess hydraulic oil is returned to the hydraulic station, allowing the piping system to control multiple valves in parallel through a return line and a return line.The hydraulic station adopts special drive technology to control the actuators of the main steam valve and the turbine bypass system.Power unit is optimized for a wide variety of applications, such as the bad environment in the truck, the long-term use of heavy duty operation and other needs of high performance and high quality should be that led to an extremely common platforms, it USES the standard components to handle most of the application conditions required by the market, minimize customer hydraulic components inventory, and greatly reduce the workload of non-standard design.

What is a hydraulic power unit?

Compared with mechanical and electrical transmission, hydraulic transmission has the following advantages:

1, hydraulic transmission of various components, according to the need to be convenient and flexible to arrange.

2. Light weight, small volume, small motion inertia and fast reaction speed.

3, convenient control, can achieve a wide range of stepless speed regulation (speed regulation range up to 2000:1).

4. Overload protection can be realized automatically.

5, generally using mineral oil as the working medium, relative to the movement surface can be self-lubrication, long service life.

6. It is easy to achieve linear motion.

7, it is easy to realize the automation of the machine, when the use of electro-hydraulic joint control, not only to achieve a higher degree of automatic control process, but also to achieve remote control. 

什么是液压动力单元?



什么是液压动力单元?




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Contact:Cao jingshan

Phone:13586888865

Tel:0574-86301550

E-mail:cjs@nb-entiandi.com

Address:No. 6007, zhenpu road, xiepu town, zhenhai district, Ningbo


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