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Hydraulic system and method for accurately controlling oil temperature

A precise control, hydraulic system technology, applied in the direction of fluid pressure actuation system components, fluid pressure actuation devices, servo motors, etc., can solve the problems of large power loss and poor temperature control accuracy, and achieve low power loss and reduction. Fever, little heat effect

Pending Publication Date: 2022-04-19
XIAN AERO ENGINE CONTROLS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a hydraulic system for precise control of oil temperature to overcome the problems of poor temperature control accuracy and large power loss existing in the existing open-loop temperature control system

Method used

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  • Hydraulic system and method for accurately controlling oil temperature
  • Hydraulic system and method for accurately controlling oil temperature
  • Hydraulic system and method for accurately controlling oil temperature

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Embodiment Construction

[0041] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation modes of the present invention will be described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Example. Based on the embodiments of the present invention, all other embodiments obtained by ordinary persons in the art without creative efforts shall fall within the protection scope of the present invention.

[0042] In the following description, a lot of specific details are set forth in order to fully understand the present invention, but the present invention can also be implemented in other ways different from those described here, and those skilled in the art can do it without departing from the meaning of the present invention. By analogy, the present invention is therefore not limited ...

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Abstract

The invention relates to a hydraulic system and method for accurately controlling oil temperature. The problems that an existing temperature control system is poor in temperature control precision, large in power loss and the like are solved. The system comprises a plunger pump, a plunger motor, an air supply device, a temperature bulb, a temperature control valve, a throttler, a first proportional valve and a hydraulic cylinder. The temperature bulb senses the oil temperature in the oil tank in real time and controls the opening degree of a cone valve in the temperature control valve, so that the flow passing through the throttler is changed, the pressure difference between the left side and the right side of the first proportional valve is changed, the working position of the first proportional valve and the opening degree of a variable valve port are changed, and the flow entering a hydraulic cylinder control cavity is changed; therefore, the angle of the swash plate of the plunger pump is changed, and the output flow of the plunger pump is further changed; the output flow of the plunger pump is changed, so that the rotating speeds of the plunger motor and the air supply device are changed, and the cooling speed of oil in the oil tank is changed. The whole control process is full-automatic control, the oil temperature can be adjusted in real time, and it is always guaranteed that the oil temperature in the oil tank is within the required temperature range.

Description

technical field [0001] The invention relates to an oil temperature control system, in particular to a hydraulic system and method for precisely controlling oil temperature. Background technique [0002] Keeping the oil temperature of hydraulic oil in a reasonable range has an important impact on the control characteristics of related precision hydraulic control systems. At present, the temperature control system in the above-mentioned system is generally a temperature open-loop control, such as figure 1 As shown, it includes plunger pump 01, plunger motor 02 and fan 03. The working principle is that plunger pump 01 continuously outputs flow, drives plunger motor 02 to drive fan 03 to rotate, and cools the oil in oil tank 04. [0003] When the system works, there are the following defects; [0004] 1) When the system is working, the plunger motor 02 drives the fan 03 to rotate at a constant speed, continuously cooling the oil in the fuel tank 04, and cannot control the temp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B21/042F15B21/0423F15B11/042F15B13/04
CPCF15B21/042F15B21/0423F15B11/0423F15B13/0401
Inventor 李斌张彩虹段士伟何增强耿攀孔䶮
Owner XIAN AERO ENGINE CONTROLS
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