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Combined control device based on green medium

A control device and combined technology, applied in the direction of fluid pressure actuating device, servo motor assembly, fluid pressure actuating system assembly, etc., can solve the problems of pollution and medium failure, and achieve good environmental protection, perfect function and strong practicality. Sexual and generic effects

Pending Publication Date: 2020-09-22
DONGFANG ELECTRIC AUTOMATIC CONTROL ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the above-mentioned problems in the prior art and provide a combined control device based on green media with simple structure and convenient control. The present invention is mainly used in the hydraulic control system for operating the water inlet valve of pumped storage power stations On the one hand, it solves the problem of serious pollution caused by oil medium leakage into the environment caused by mutual leakage of the oil medium in the existing hydraulic control system

Method used

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  • Combined control device based on green medium
  • Combined control device based on green medium
  • Combined control device based on green medium

Examples

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Effect test

Embodiment 1

[0024] This embodiment discloses a combined control device based on green media, including an electromagnetic reversing valve, a hydraulic control reversing valve, a pilot control valve group, a servomotor, a pressure relay and two pressure measuring contacts. The directional valve includes an oil inlet control port, a water inlet, a drain port, a first control water outlet and a second control water outlet; the electromagnetic directional valve can be a double coil valve or a single coil valve, which includes Oil inlet, oil outlet and oil outlet control port; the pilot control valve group adopts a hydraulically controlled two-way valve controlled by a double chamber* (control chamber and working chamber), which includes a first hydraulically controlled two-way valve and a second hydraulically controlled two-way valve. The hydraulically controlled two-way valve, the first hydraulically controlled two-way valve and the second hydraulically controlled two-way valve both include a...

Embodiment 2

[0034]This embodiment discloses a combined control device based on green media, including an electromagnetic reversing valve, a hydraulic control reversing valve, a pilot control valve group, a servomotor, a pressure relay and two pressure measuring contacts. The directional valve includes an oil inlet control port, a water inlet, a drain port, a first control water outlet and a second control water outlet; the electromagnetic directional valve can be a double coil valve or a single coil valve, which includes Oil inlet, oil outlet and oil outlet control port; the pilot control valve group adopts a hydraulically controlled two-way valve controlled by a double chamber* (control chamber and working chamber), which includes a first hydraulically controlled two-way valve and a second hydraulically controlled two-way valve. The hydraulically controlled two-way valve, the first hydraulically controlled two-way valve and the second hydraulically controlled two-way valve both include a ...

Embodiment 3

[0046] This embodiment is basically the same as Embodiment 2, the main difference is:

[0047] The constant pressure control chambers of the hydraulically controlled two-way valves in the pilot control valve group are respectively connected to the first control water outlet and the second control water outlet of the hydraulic control reversing valve. Specifically, the constant pressure control chamber of the first hydraulically controlled two-way valve and the constant pressure control chamber of the third hydraulically controlled two-way valve are connected to the second control water outlet of the hydraulically controlled reversing valve, and the second hydraulically controlled two-way valve Both the constant pressure control chamber of the fourth hydraulic control two-way valve and the constant pressure control chamber of the fourth hydraulic control two-way valve are connected with the first control water outlet of the hydraulic control reversing valve.

[0048] The pilot ...

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Abstract

The invention discloses a combined control device based on a green medium. The combined control device comprises an electromagnetic reversing valve, a hydraulic control reversing valve, a pilot control valve group and a servomotor, wherein an oil inlet of the electromagnetic reversing valve communicates with a control oil source, and an oil outlet control port of the electromagnetic reversing valve is connected with an oil inlet control port of the hydraulic control reversing valve; a water inlet of the hydraulic control reversing valve is connected with a constant-pressure control water source, a first control water outlet and a second control water outlet of the hydraulic control reversing valve are respectively connected with working cavity control ports of a first hydraulic control two-way valve and a second hydraulic control two-way valve; a working cavity water inlet connector of the first hydraulic control two-way valve is connected with a pressure water source, a working cavitywater outlet connector of the first hydraulic control two-way valve is connected with the second hydraulic control two-way valve and a cavity opening connector of the servomotor, and a working cavitywater outlet connector of the second hydraulic control two-way valve is connected with a water return opening. The combined control device disclosed by the invention solves the problems of medium failure caused by mutual leakage and serious pollution caused by leakage into the environment when oil media are adopted in an existing hydraulic control system for coupling.

Description

technical field [0001] The invention relates to the technical field of hydraulic systems, in particular to a combined control device based on green media, which mainly uses water media to realize valve control. Background technique [0002] Hydraulic transmission uses liquid working media for energy transmission and control. There are many types of working media, including mineral oil-based hydraulic oil, water-based flame-retardant hydraulic fluid, anhydrous synthetic fluid, natural fresh water or sea water, etc. The characteristics of these media The difference is huge, and the requirements for hydraulic components are different. Because mineral oil has excellent comprehensive physical and chemical properties such as high viscosity, good lubricating performance, rust resistance, and good compatibility, it is an ideal hydraulic transmission working medium, so it is widely used and occupies a dominant position in the hydraulic system. [0003] After more than 100 years of d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B11/08F15B13/04F15B21/08
CPCF15B11/08F15B13/04F15B21/08
Inventor 陈智勇朱廷忠贾小平王志力李佳曹维福
Owner DONGFANG ELECTRIC AUTOMATIC CONTROL ENG CO LTD
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