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

Steam-turbine large hydraulic valve performance life test device

A life test, hydraulic valve technology, applied in the direction of mechanical valve testing, etc., can solve the problems of inability to rotate, low work efficiency, and tired operation.

Pending Publication Date: 2019-09-20
HANGZHOU DIANZI UNIV
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing manual reversing valve is pulled manually, and the frequency of pulling is very high. The manual reversing valve is used for clamping tools. When clamping, it is bent, and when it is released, the valve opens. The operator may need two to three minutes. Pull once, the operation is tiring, and the work efficiency is low
The spool of the existing manual reversing valve is reciprocating and cannot rotate
There is a gap between the spool and the valve sleeve. If it is still, the spool will fall off. The spool and hydraulic oil are viscous, and the valve has viscous resistance inside. The oil is dirty, the resistance is greater, and the pulling force needs to be increased. Significantly reduces work efficiency

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
  • Steam-turbine large hydraulic valve performance life test device
  • Steam-turbine large hydraulic valve performance life test device
  • Steam-turbine large hydraulic valve performance life test device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] The present invention will be further described below in conjunction with the accompanying drawings of the description.

[0031] As shown in the figure, the steam turbine large-scale hydraulic valve performance life test device includes a reversing valve driven by a driving mechanism. The driving mechanism includes a body 3, and a worm 19, a worm wheel 17, and a worm 19 are arranged in the body 3 for mutual transmission and cooperation. Driven by the motor 65 installed on the body 3, the worm gear 17 is fixedly sleeved in the middle and lower part of the stroke adjustment sleeve 16, the stroke adjustment sleeve 16 and the body 3 are rotated and matched, and the upper part of the stroke adjustment sleeve 16 is engaged with a stroke adjustment block 11 which rotates integrally. The stroke adjustment block 11 is radially slidingly matched with the stroke adjustment sleeve 16, and the outside of the stroke adjustment block 11 is tightly fitted with a fixed concentric cam 24,...

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 a steam-turbine large hydraulic valve performance life test device and belongs to the fatigue test device technology field. The device comprises a reversing valve driven by a driving mechanism. The driving mechanism comprises a machine body. A worm and a worm wheel which are mutually transmitted and cooperated are arranged in the machine body. The worm is driven by a motor installed on the machine body. The worm wheel is fixedly connected to a lower middle portion of a stroke adjusting sleeve. The stroke adjusting sleeve is rotatably cooperated with the machine body. An upper portion of the stroke adjusting sleeve is clamped with a stroke adjusting block which is integrally rotated. The stroke adjusting block and the stroke adjusting sleeve are radially and slidably cooperated. An external portion of the stroke adjusting block is firmly cooperated and fixed with a concentric cam. One side of the concentric cam forms top contact cooperation with a slide block. The slide block is linked and cooperatively connected to a main valve core of the reversing valve. By using the steam-turbine large hydraulic valve performance life test device, the driving mechanism drives the main valve core of the reversing valve to carry out left and right reciprocating motion. The device is suitable for performance testing of the reversing valve.

Description

technical field [0001] The invention belongs to the technical field of fatigue testing devices, in particular to a performance life testing device for a large hydraulic valve of a steam turbine. Background technique [0002] Whether the reversing valve works well or not requires a device to test its fatigue operation. The existing manual reversing valve is pulled manually, and the frequency of pulling is very high. The manual reversing valve is used for clamping tools. When clamping, it is bent, and when it is released, the valve opens. The operator may need two to three minutes. Pull once, the operation is tiring, and the work efficiency is low. The spool of the existing manual reversing valve reciprocates and cannot rotate. There is a gap between the spool and the valve sleeve. If it is still, the spool will fall off. The spool and hydraulic oil are viscous, and the valve has viscous resistance inside. The oil is dirty, the resistance is greater, and the pulling force ne...

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): G01M13/003
CPCG01M13/003
Inventor 许静柏燕
Owner HANGZHOU DIANZI 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