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Non-intruding type waterpower test method in building draining system

A technology for building drainage and testing methods, which is used in fluid dynamics testing, testing of machine/structural components, measuring devices, etc., can solve the problem of large measurement deviation, inability to test the accurate drainage volume of rainwater drainage risers, inability to obtain pipeline water flow velocity and Water flow cross-sectional data, etc.

Inactive Publication Date: 2016-08-10
SUNS CASTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to solve the problem of large measurement deviation in the hydraulic testing method of the existing building drainage pipeline system, the inability to obtain the data of the water flow velocity and the water flow cross-section in the drainage process when the pipeline is partially filled, and the inability to test the characteristic air bubbles. The technical problem of the accurate displacement of the water-mixed rainwater drainage riser provides a non-invasive hydraulic test method in the building drainage system, which can measure the drainage flow, pressure and water seal loss of the building drainage system at the same time. Obtain accurate test data of flow velocity, flow rate, fluid form and water flow section distribution at different pipe heights during the drainage test, so as to provide more accurate and reliable data for the research and verification of the basic theory of building drainage, the structural design of drainage pipes and fittings, and the engineering design of drainage systems. Test basis

Method used

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  • Non-intruding type waterpower test method in building draining system
  • Non-intruding type waterpower test method in building draining system
  • Non-intruding type waterpower test method in building draining system

Examples

Experimental program
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Embodiment 1

[0025] Such as figure 1 As shown, a non-invasive hydraulic testing method in a building drainage system in the present embodiment, the steps are:

[0026] 1) An electrical capacitance tomography system sensor 3 is installed on the outer wall of the insulating standpipe 1 below the water discharge horizontal branch pipe 2 in the measured pipeline system of the building drainage pipeline with a height of more than 30 meters;

[0027] 2) According to the preset drainage flow rate and the drainage duration of constant flow rate, water is discharged in the water discharge lateral branch pipe 2, and the internal section or spatial projection data of the insulating riser 1 pipe during the drainage process is collected by the sensor 3 of the capacitance tomography system. The data is processed and stored by computer;

[0028] 3) Move the capacitance tomography system sensor 3 installed on the outer wall of the insulating riser 1 down by a sensor length, install the capacitance tomogr...

Embodiment 2

[0032] Such as figure 2 As shown, a non-invasive hydraulic testing method in a building drainage system in the present embodiment, the steps are:

[0033] 1) A test made by adding a section of insulating material with the same inner diameter and roughness as the metal pipe to be tested is installed in the metal standpipe 6 below the water discharge horizontal branch pipe 2 in the pipe system under test of the building drainage pipe with a height of more than 30 meters. The pipeline 4, the electrical capacitance tomography system sensor 3 is installed on the outer wall of the testing pipeline 4;

[0034] 2) According to the preset drainage flow rate and the drainage duration of the constant flow rate, water is discharged in the water discharge lateral branch pipe 2, and the cross-section or spatial projection data of the test pipeline 4 during the drainage process is collected by the sensor 3 of the capacitance tomography system. The collected data processed and stored by com...

Embodiment 3

[0039] Such as image 3 As shown, a non-invasive hydraulic testing method in a building drainage system in the present embodiment, the steps are:

[0040] 1) Install an electrical capacitance tomography system sensor 3 on the outer wall of the water discharge horizontal branch pipe 2 in the measured pipeline system of the building drainage pipeline with a height of more than 30 meters;

[0041] 2) According to the preset drainage flow rate and the drainage duration of constant flow, water is discharged in the water discharge lateral branch pipe 2, and the internal section or spatial projection data of the water discharge lateral branch pipe 2 pipe during the drainage process is collected by the sensor 3 of the capacitance tomography system. The data is processed and stored by computer;

[0042] 3) Move the capacitance tomography system sensor 3 installed on the outer wall of the water discharge horizontal branch pipe 2 horizontally for a sensor length distance, install the capa...

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Abstract

The invention belongs to the hydraulics measurement method technology field and particularly relates to a non-intruding type waterpower test method in a building draining system. The non-intruding type waterpower test method in the building draining system mainly solves the technical problem that methods in the prior art cannot accurately measure the drainage performance of the building drainage system. According to the technical scheme adopted by the invention, the non-intruding type waterpower test method in the building draining system comprises steps of 1) installing a capacitance tomography imaging system sensor in a detected pipe system, 2) collecting data through the capacitance tomography imaging system sensor, processing the data through the computer and storing the data, 3) moving the capacitance tomography imaging system sensor down for a length of a sensor to perform measurement according to the prior step, 4) performing a reciprocating test according to the step 2) and 3), and 5) establishing a data system and a three-dimensional animation model according to all measured data. The non-intruding type waterpower test method in the building draining system provides direct data to the drainage theory study and the drainage system quantitative analysis through testing and analyzing the three-dimensional data.

Description

technical field [0001] The invention belongs to the technical field of hydraulic measuring methods, in particular to a non-invasive hydraulic testing method in a building drainage system. Background technique [0002] Construction sewage and wastewater drainage systems are generally gravity flow drainage of gas-liquid two-phase flow. During engineering design, in order to prevent the harmful waste gas in the sewage pipe from overflowing into the living room, it is necessary to ensure that the peak value of the air pressure fluctuation in the pipe is under the maximum design drainage flow. And water seal loss does not exceed the specified value. Due to pipes with different pipe diameters and different surface roughnesses, the peak pressure fluctuations and water seal losses in the pipes are very different under different flow rates and different fluid forms. Therefore, the hydraulic test of building drainage piping system is an important means to carry out theoretical resear...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01P5/08G01F1/56G01M10/00
CPCG01P5/08G01F1/56G01M10/00
Inventor 吴克建任少龙
Owner SUNS CASTING CO LTD