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

Hydraulic turbine drum valve electrohydraulic synchronous control system

A technology of synchronous control and water turbine, applied in the direction of hydroelectric power generation, mechanical equipment, engine components, etc., can solve problems such as application limitations

Inactive Publication Date: 2009-08-12
TIANJIN UNIV
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The electro-hydraulic synchronous control system occupies a small space, has low noise, and can control the movement speed. However, because the system cannot work when the power is off, its application is also limited to a certain extent.

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
  • Hydraulic turbine drum valve electrohydraulic synchronous control system
  • Hydraulic turbine drum valve electrohydraulic synchronous control system
  • Hydraulic turbine drum valve electrohydraulic synchronous control system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] The technical solutions of the present invention will be further described below through specific embodiments and with reference to the accompanying drawings.

[0015] The system adopts the common control method of mechanical hydraulic synchronization and electrical synchronization to realize the synchronous lifting and speed control requirements of the cylinder valve of the water turbine.

[0016] In this embodiment, six servomotors are used as the actuators of the hydraulic system. In order to realize the synchronous control technical requirements of the servomotor hydraulic cylinders, it is realized by ensuring that each servomotor hydraulic cylinder has an equal amount of oil in and out. At the same time, the motor used in this embodiment is a radial plunger hydraulic motor to divide the hydraulic oil, so as to ensure that the amount of oil in and out of each servomotor hydraulic cylinder is basically equal. Each shunt motor has two oil delivery pipes, one of which ...

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 electro-hydraulic synchronous control system of a ring gate for a hydro turbine, which consists of a pilot valve bank, diffluence motors and oil distributing modules. The output of the oil circuit of the pilot valve bank is connected respectively to six synchronous diffluence motors and six corresponding oil distributing modules. A servomotor is arranged at the end of each oil distributing module and serves as an actuating device of the hydraulic system. A radial plunger type diffluence motor is used to distribute hydraulic oil to ensure amount of inlet oil is basically equal to that of outlet oil for each servomotor hydraulic cylinder. Each oil distributing module is provided with two fine-coarse tuning magnetic ball valves which accurately control flow to the servomotor through a PLC so as to ensure the synchronous control of the six servomotors reaches the design requirement. The electro-hydraulic synchronous control system has the advantages that high-precision mechanical hydraulic electrical synchronous control and speed control are realized by controlling the speed of the servomotors through controlling flow rate of the electro-hydraulic proportional directional valve on the basis of full functional ability, safety and reliability.

Description

technical field [0001] The invention belongs to the electro-hydraulic integrated control technology, and in particular relates to a multi-hydraulic cylinder synchronous lifting electro-hydraulic control system, in particular to an electro-hydraulic synchronous control system for hydraulic turbine cylinder valves for opening and closing the hydraulic turbine cylinder valves. Background technique [0002] As a disconnect valve, the barrel valve is installed between the fixed guide vane and the movable guide vane of the turbine. When the cylinder valve is closed, it acts as a water stop valve to prevent water from passing through, so as to prevent the guide vanes from leaking too much due to sand wear; when the cylinder valve is opened, the entire cylinder retracts into the cavity between the turbine support ring and the top cover Indoors, it does not interfere with the water flow of the machine. In addition, the cylinder valve also has the function of emergency shutdown when ...

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): F03B15/12
CPCY02E10/226Y02E10/20
Inventor 肖聚亮王国栋宋伟科李晓奇洪鹰
Owner TIANJIN UNIV
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