Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A hydraulic accumulator pressure active control system and control method

A technology of active control system and hydraulic accumulator, applied in fluid pressure actuation system components, fluid pressure actuation devices, mechanical equipment, etc., to avoid release difficulties and improve energy utilization

Active Publication Date: 2018-08-10
HUAQIAO UNIVERSITY
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention aims at the problem of active pressure control of hydraulic accumulators, and its main purpose is to provide an active pressure control system for hydraulic accumulators, which can effectively solve the problem of hydraulic accumulator recovery and release pressure being affected by circuit pressure and Improve the efficiency and reuse rate of hydraulic energy recovery by solving the problem of the impact of air bag pressure

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A hydraulic accumulator pressure active control system and control method
  • A hydraulic accumulator pressure active control system and control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] refer to figure 2 As shown, it shows the specific structure of the preferred embodiment of the present invention, including a hydraulic accumulator (1), a first high-speed switch valve (2), a gas cylinder (3), a second high-speed switch valve (4), booster cylinder (5), two-position two-way pneumatic reversing valve (6), controller (7), quantitative pump (8), overflow valve (9), one-way valve (10), mechanical Arm hydraulic cylinder (11); where:

[0027] The hydraulic accumulator (1) includes a cavity, one side inside the cavity is a retractable air bag cavity, and the rest of the cavity outside the air bag cavity is an oil cavity.

[0028] The oil chamber of the hydraulic accumulator (1) is connected with the rodless chamber of the mechanical arm hydraulic cylinder (11) and the one-way valve (10); the oil inlet of the one-way valve (10) is connected with the oil outlet of the quantitative pump (8), The oil inlet port of the overflow valve (9) is connected; the oil out...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an active control system and control method for the pressure of a hydraulic accumulator. The active control system comprises high-speed switch gas valves, a pressurizing cylinder, the hydraulic accumulator, a gas bottle, a two-position two-way air-operated reversing valve, a controller and the like. When the hydraulic accumulator is in an oil liquid recycling state, nitrogen in a gas bag is gradually pressed into the gas bottle through the pressurizing cylinder while hydraulic oil enters the hydraulic accumulator, and then active control over the pressure of the hydraulic accumulator is achieved; when the hydraulic accumulator is in an oil liquid releasing state, high-pressure gas in the gas bottle enters the gas bag of the hydraulic accumulator through the high-speed switch gas valves to press stored oil liquid into a system loop, and then the pressure of the hydraulic accumulator is controlled to be at a constant value. According to the active control system and control method, active control over the pressure of the hydraulic accumulator can be achieved, the problem that in a hydraulic energy recycling system, the recycled pressure oil releasing process is uncontrollable and incomplete due the fact that the pressure of the hydraulic accumulator is passively controlled is solved, and the energy recycling rate and utilizing rate are increased.

Description

technical field [0001] The invention relates to a pressure control system characterized by electro-hydraulic gas control technology, in particular to an active pressure control system of a hydraulic accumulator. Background technique [0002] With the increasingly serious problems of energy shortage and environmental pollution worldwide, it is of great practical significance to study the energy recovery of construction machinery. Hydraulic excavator is a kind of engineering machinery with relatively large power, but its total utilization rate of energy is low, so energy recovery technology has received attention from all aspects. [0003] According to the type of energy storage components, the forms of energy recovery currently used in construction machinery can be divided into electrical and hydraulic. Among them, hydraulic energy recovery has been widely applied and researched due to its high power density, fast storage and release of pressure oil, and simple structure. Th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F15B1/02F15B21/14
CPCF15B1/02F15B21/14
Inventor 林添良周圣炎缪骋赵永前王文龙任好玲付胜杰陈其怀
Owner HUAQIAO UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com