Emergency turn-off device of electrohydraulic valve

A valve, emergency technology, applied in the direction of valve device, valve operation/release device, fluid pressure actuation device, etc., can solve the problems of inability to judge valve position, inconvenience, complexity, etc., to improve equipment reliability and easy operation. , the effect of simplifying the system

Inactive Publication Date: 2018-06-15
BAODING XINHUA PETROCHEM EQUIP MFG
View PDF5 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The system is slightly complicated due to the use of 3 solenoid valves and 2 hydraulic control valves to control the 2 working states of the valve; and 2 position sensors are used to detect the state of the valve. When the valve moves between the 2 sensors, the computer cannot judge valve position, which is inconvenient in some cases

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
  • Emergency turn-off device of electrohydraulic valve
  • Emergency turn-off device of electrohydraulic valve
  • Emergency turn-off device of electrohydraulic valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0013] exist figure 1 A schematic diagram of how the hydraulic system works is shown in . figure 1 Among them, the front end of the hydraulic pump 11 is a high-pressure oil circuit, and the rear part is an oil supply circuit. The oil supply circuit is composed of an oil filter 12 and a pipeline, and the hydraulic oil is drawn from the oil tank 13 to supply the hydraulic pump 11 . The high-pressure oil route consists of check valve 16, accumulator 1, pressure gauge 2, pressure sensor 3, manual valve 4, normally open solenoid valve 5, overflow valve 10, normally closed solenoid valve 9 and pipelines. The pressure gauge 2 displays the pipeline pressure, and the pressure sensor 3 transmits the pipeline pressure data to the computer. When the pipeline pressure is lower than the set minimum pressure value, the computer starts the hydraulic pump 11, injects o...

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 relates to an emergency turn-off device of an electrohydraulic valve, and the emergency turn-off device is controlled by a computer, uses an energy accumulator for energy accumulating, and is driven by a hydraulic cylinder. A system uses two solenoid valves and two hydraulic-controlled valves to control opening and closing of the valve, and when power off occurs, the normally-open solenoid valve is opened, and the electrohydraulic valve is automatically closed by using energy of the energy accumulator.

Description

technical field [0001] The invention relates to an electro-hydraulic valve driving device, which is used for a valve of a dangerous liquid storage tank and is a safety guarantee device. The device uses a hydraulic transmission system, accumulator energy storage, computer control, and the valve can still be closed in the event of power interruption. Background technique [0002] The electro-hydraulic valve emergency shut-off device currently used in China is a foreign product. The main device is a hydraulic system, which uses a computer to control three solenoid valves to control the oil circuit, and a hydraulic cylinder to drive the valve stem to realize the valve switch action. The hydraulic system uses an accumulator to store energy. When the power supply is interrupted, the energy stored in the accumulator is used to drive the hydraulic cylinder and drive the valve. The system is slightly complicated due to the use of 3 solenoid valves and 2 hydraulic control valves to c...

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
IPC IPC(8): F16K31/122F16K31/06F16K37/00F15B21/08
CPCF16K31/122F15B21/087F16K31/06F16K37/0083
Inventor 王庆宪
Owner BAODING XINHUA PETROCHEM EQUIP MFG
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap