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A hydraulic intelligent control valve

A technology of intelligent control and pressure control, applied in the field of hydraulic control valves, to simplify hardware design, facilitate manufacturing costs, and reduce hardware types

Active Publication Date: 2020-12-29
HAOGAO MECHATRONICS TECH SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above-mentioned problems that exist when a large number of hydraulic control valves with different structures need to be used in the existing hydraulic system, the present invention proposes a hydraulic intelligent control valve

Method used

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  • A hydraulic intelligent control valve
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Examples

Experimental program
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Effect test

Embodiment 1

[0034]CombineFigure 1 to Figure 3As shown, in this embodiment, the electronically controlled main valve selects a high-speed switching proportional pilot valve, and the spool of the proportional pilot valve acts under the combined action of the proportional solenoid force and the spring force to achieve the valve port Adjust the size of the opening between closed and fully open.

[0035]In this embodiment, the control signal is a valve opening control signal. The control unit of the microprocessor receives the valve port opening control signal, and directly controls the change of the valve port opening of the electronically controlled main valve accordingly, so as to complete the control of the liquid flow through the electronically controlled main valve according to the flow formula. The throttle valve control function of the electronically controlled main valve.

[0036]Among them, the flow formula corresponding to the hydraulic throttling element is:

[0037]

[0038]In the formula, Q(τ)—flo...

Embodiment 2

[0046]Combinefigure 1 withFigure 4 As shown, the electronically controlled main valve with the same structure as that of the first embodiment is adopted. The difference is that the control signal includes a valve port opening control signal and a pressure detection signal. The control unit of the microprocessor receives the valve port opening control signal and the pressure detection signal, and controls the valve port opening change of the electronically controlled main valve according to the relationship between the inlet pressure and the outlet pressure. Among them, when the inlet pressure P1Greater than outlet pressure P2When the valve port opening of the electronically controlled main valve changes according to the change of the valve port opening control signal, on the contrary, when the inlet pressure P1Less than or equal to outlet pressure P2At this time, the valve port opening of the electronic control main valve is at the maximum state, that is, the electronic control main...

Embodiment 3

[0049]Combinefigure 1 withFigure 5 As shown, the electronically controlled main valve with the same structure as that of the first embodiment is adopted. The difference is that the control signal includes the valve port opening control signal and the pressure detection signal. The control unit of the microprocessor receives the valve port opening control signal and the pressure detection signal, and controls the valve port opening change of the electronically controlled main valve according to the relationship between the inlet pressure and the outlet pressure. Among them, the valve port opening control signal and the inlet pressure P1And outlet pressure P2The pressure difference between is correlated, and the microprocessor is based on the inlet pressure P1And outlet pressure P2The pressure difference changes between the two, adjust the valve port opening control signal input to the electronic control main valve, so that the inlet pressure P1And outlet pressure P2The pressure diffe...

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Abstract

The invention belongs to the technical field of hydraulic control valves. In order to solve the problems existing when an existing hydraulic system uses lots of hydraulic control valves in different types, the invention discloses a hydraulic intelligent control valve. The hydraulic intelligent control valve comprises an electronic control main valve, a micro processor and a detecting unit; the detecting unit comprises two pressure sensors which are fixed to the inlet position and the outlet position of the electronic control main valve correspondingly and used for detecting the inlet pressureand the outlet pressure of the electronic control main valve, and a pressure detecting signal is formed and is sent to the micro processor; the micro processor receives the pressure detecting signal and a control signal, and is connected with the electronic control main valve to be used for controlling the magnitude changing of the opening degree of a valve port of the electronic control main valve; and the control signal comes from a signal source beyond the hydraulic intelligent control valve. According to the hydraulic intelligent control valve, the micro processor adjusts and controls theopening degree of the valve port of the electronic control main valve according to the detecting result on the electronic control main valve by the detecting unit, and control functions of different hydraulic valves are achieved in the manner of throttling control.

Description

Technical field[0001]The invention belongs to the technical field of hydraulic control valves, and specifically relates to a hydraulic intelligent control valve.Background technique[0002]The hydraulic control valve is a control element used to control the pressure, flow and direction of the liquid in a hydraulic transmission system or a hydraulic control system. According to different uses, hydraulic control valves are designed in different structural forms to achieve different control functions, such as pressure control valves for pressure control, flow control valves for flow control, and flow control for on, off and flow. Hydraulic control valves with various structures and functions such as directional control valves.[0003]At present, in a complete hydraulic transmission system or hydraulic control system, in order to ensure the accurate realization and stable and safe operation of the hydraulic transmission system or hydraulic control system functions, it is usually necessary t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B13/02F16K31/06
Inventor 许仰曾高峰朱小明隆跃进黄宇吴顺明
Owner HAOGAO MECHATRONICS TECH SHANGHAI
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