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

Optimum design method of hydraulic ship lifter valve system with anti-vibration performance

A system optimization and design method technology, applied in the direction of vertical lifting of ship machinery, ship lifting devices, buildings, etc., can solve problems such as increased vibration of valves and pipelines, high-frequency vibration of pipelines, etc., to improve anti-cavitation performance and eliminate low-frequency vibrations , is conducive to the effect of structural stability

Active Publication Date: 2017-05-10
NANJING HYDRAULIC RES INST +1
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 3) The cavitation collapse area of ​​the valve is attached to the inner wall of the valve rear fork pipe, which causes the vibration of the valve and the pipeline to intensify, which is the main reason for the high-frequency vibration of the pipeline in the valve section

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
  • Optimum design method of hydraulic ship lifter valve system with anti-vibration performance
  • Optimum design method of hydraulic ship lifter valve system with anti-vibration performance
  • Optimum design method of hydraulic ship lifter valve system with anti-vibration performance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Aiming at the valve system of hydraulic shiplift with one main valve and two auxiliary valves, the method of the present invention is to optimize the arrangement of three groups of valves so that they are arranged in a spatial "product" shape, and at the same time cancel the valve rear fork pipe body shape, and replace it with " Anti-vibration body with "circular" cross-section. The invention can improve the flow state behind the valve, provide a buffer for the water flow behind the valve, reduce the pressure pulsation of the pipeline behind the valve, improve the anti-cavitation performance of the valve system, eliminate the vibration source, and have an anti-vibration effect.

[0027] Such as figure 2 As shown, the hydraulic shiplift valve system includes a valve front trigeminal pipe, three valves (a main valve 1, two auxiliary valves 2) connected to the valve front trigeminal pipe, and an anti-vibration body 3. The anti-vibration body 3 is a hollow structure with thre...

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 optimum design method of a hydraulic ship lifter valve system with an anti-vibration performance. In order to reduce the vibration of the hydraulic ship lifter water delivery valve system generated under a high water head condition, the optimum design method provided by the invention is characterized by combining manners of 'optimizing a spatial arrangement type of three valves and improving a valve back pipeline shape', changing the original parallel arrangement of the three valves located at the same height into the spatial arrangement in a shape of the Chinese character 'Pin', and meanwhile, replacing a valve back multi-branch pipe joining section with an anti-vibration body with a 'cylindrical' shape, so that a valve back low-pressure vortex area is eliminated, the pulsating pressure is reduced, the flow velocity is reduced, and thus the aim of vibration resistance is achieved. According to the optimum design method of the hydraulic ship lifter valve system with the anti-vibration performance provided by the invention, the optimally designed anti-vibration body is provided with a circular flow section, so that the problem of stress concentration of vertex angles of a square structure is avoided, and design and construction can be carried out conveniently. A model test proves that the pulsating pressure of a valve back water flow and the vibration amplitude of a side wall of a pipeline can be effectively reduced, the valve back multi-branch pipe shape is simplified, and the safe operation of the hydraulic ship lifter water delivery valve system is ensured.

Description

Technical field [0001] The invention relates to an optimized design method for a hydraulic shiplift valve system with anti-vibration performance, in particular to a valve system applied to the hydraulic shiplift "one main and two auxiliary" to reduce its high water head Optimal layout of valves that vibrate under conditions and methods for piping shape transformation. Background technique [0002] The hydraulic shiplift uses a water delivery valve to control the running speed of the cabin. The water delivery valve includes a main valve with a larger flow coefficient and two auxiliary valves with a smaller flow coefficient. The main valve is used to increase the running speed of the cabin. The auxiliary valve is used to control the precise docking of the cabin. The three valves are arranged side by side. The main valve is located in the middle and the auxiliary valves are located on both sides of the main valve. The front and back are merged to the main water pipeline by fork pip...

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 Applications(China)
IPC IPC(8): E02C5/00
CPCE02C5/00
Inventor 胡亚安李中华薛淑严秀俊郭超李云宣国祥程璐吴波李学义王蛟
Owner NANJING HYDRAULIC RES INST
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