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

Multi-target experimental device based on transient hydraulic model

A technology of hydraulic model and experimental device, which is applied in the direction of measuring device, fluid dynamics test, machine/structural component test, etc., can solve the problems of infiltration of water supply pipe network, poor test applicability, and pollutants entering the pipe, and achieve Applicable effect

Active Publication Date: 2021-08-03
ZHUZHOU ZHUHUA SMART WATER TECH CO LTD +2
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, water hammer is the main cause of leakage and pipe burst. It not only causes water waste, but also creates water quality risks. Threats to the water supply network include groundwater infiltration into the pipe network and pipe rupture when the water pressure is low or under negative pressure. when entering pollutants, etc.
[0003] Patent No. CN110131588B discloses a water hammer test device for long-distance water supply pipelines. Therefore, it is necessary to design an experimental device combined with a transient hydraulic model for hydraulic analysis to monitor the pressure, flow, speed and pressure parameters at the pipeline air valve during the transient hydraulic transition process. By fitting the obtained test results with the hydraulic model simulation results to verify the safety of the water hammer protection measures and the accuracy of the hydraulic model simulation, and provide water hammer protection solutions for engineering design

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
  • Multi-target experimental device based on transient hydraulic model
  • Multi-target experimental device based on transient hydraulic model
  • Multi-target experimental device based on transient hydraulic model

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Two SLOW80-280(I)A water pumps in the pumping station were used to run the full stop pump test, and the design flow rate was 190m 3 / h, the design head is 70m, the efficiency is 77.5%, and the speed is 2950r / min. In order to simulate the most unfavorable situation of the pumping station, the two pumps were operated in parallel for the test. like figure 2 As shown, the water pump pumps water to the 20m, 35m and 50m water towers respectively through the DN300 water supply pipeline. When the operation is stable, the two water pumps are completely stopped. The check valves at the water pump outlets are multi-functional water pump control valves. This test does not need to use the winding pipeline and the corresponding components on the winding pipeline.

[0039] The purpose of this test is: 1) to verify the deviation between the calculation results of the hydraulic model and the actual test; 2) to verify the function of the water hammer monitoring system; 3) to test the ...

Embodiment 2

[0052] This embodiment is also a test with the pump completely shut down, and the operation is consistent with that of Embodiment 1, except that the water pump pumps water to the 20m, 35m and 50m water towers respectively through the DN800 water supply pipeline.

Embodiment 3

[0054] The water hammer protection comparison test of the check valve in this embodiment does not need to use the bypass pipeline and the corresponding components on the bypass pipeline, such as image 3 As shown, two SLOW80-280(I)A pumps in the pumping station pump water to the 20m, 35m and 50m water towers respectively through the DN300 water supply pipeline. When the operation is stable, the two pumps are completely stopped. The check valve at the outlet is a multifunctional water pump control valve, and the check valve at the outlet of the other pump is a micro-resistance slow-closing check valve or a swing-type check valve or a slow-closing noise-absorbing check valve, etc., which can be tested according to needs The object of the pumping station is changed to simulate the most unfavorable situation of the pumping station, and the two pumps are operated in parallel.

[0055] The purpose of this test is: 1) to verify the function of the water hammer monitoring system; 2) t...

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 the technical field of water hammer protection, and discloses a multi-target experimental device based on a transient hydraulic model to solve the problem that existing transient hydraulic model analysis lacks key control assembly experimental data. The multi-target experimental device comprises a water pool, a multi-layer water tower and a pump station for pumping water flow of the water pool, and the pump station is provided with at least two water pumps. The water pumps run in series or in parallel; water in the water tank is pumped to the water tower through the water feeding pipeline; pressure sensors are arranged in front of and behind a water pump control valve of the water pump, a check valve is arranged at a water pump outlet, an electromagnetic flowmeter is arranged on a water pump outlet catchment header pipe, and a rotating speed sensor is arranged at the rotating shaft of the water pump. The device is high in applicability and can be used for tests such as full pump stopping, pipe explosion simulation, check valve comparison, water distribution opening valve closing and tail end valve closing, performance parameter data of a key control assembly are obtained through cooperative operation of all parts of the device, and therefore a model can accurately reflect the hydraulic characteristics of an actual water conveying system during software simulation; and the protection design of the engineering water hammer is safer, more reliable and more economical.

Description

technical field [0001] The invention relates to the technical field of water hammer protection, in particular to a multi-objective experimental device based on a transient hydraulic model. Background technique [0002] At present, the design of piping systems often focuses on steady-state hydraulic analysis. For transient hydraulic model analysis, due to the lack of experimental data on key control components, the dynamic characteristics of check valves and air valves are often idealized. Therefore, when designing water hammer protection measures, if the parameter design assumption of the check valve deviates from the dynamic characteristics of the actual valve, higher valve closing water hammer may occur, which will affect the safe operation of the pumping station. For the pump lifting system, there are problems such as pumping station water hammer, pipeline burst, pipeline suction, pipeline surge, and water pump runaway; for gravity flow systems, there are problems such as...

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): G01M10/00
CPCG01M10/00
Inventor 徐秋红蒋丽云黄靖罗剑宾殷建国欧立涛曹叶芝黄浩发
Owner ZHUZHOU ZHUHUA SMART WATER TECH CO LTD
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