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Non-contact passive pipeline medium density measurement method

A density measurement, non-contact technology, applied in the direction of measuring devices, specific gravity measurement, instruments, etc., can solve the problems such as difficult measurement of liquid density, achieve the effect of convenient installation, improve measurement accuracy, and low measurement cost

Inactive Publication Date: 2020-04-21
CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of the deficiencies in the above-mentioned background technology, the present invention proposes a non-contact passive pipeline medium density measurement method, which solves the problem that the liquid density in the tunnel construction pipeline is not easy to measure in the prior art

Method used

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Experimental program
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Embodiment

[0019] In an embodiment, a non-contact passive pipeline medium density measurement method, the steps are as follows:

[0020] S1: Take the measurement of the slurry density of the slurry shield machine as an example, but it is not limited to this range. For a long section of slurry inlet and discharge pipeline, select a long straight rigid pipe of the mud pipeline as the target pipeline 1, and connect hose 4 at both ends of the pipeline, such as figure 1 Shown.

[0021] S2: Weighing modules 2 with the same measuring range are arranged symmetrically at the front and rear ends of the target pipeline 1; the upper and lower ends of the weighing module are stably fixed to the target pipeline and trailer through the bottom plate and bolts, and the limit device is fixed to The front and rear ends of the weighing module. The weighing module is four load cells with the same measuring range. The front end of the target pipe 1 is provided with two load cells symmetrically, and the rear end ...

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Abstract

The invention discloses a non-contact passive pipeline medium density measurement method, and solves a problem that density of a liquid in a tunnel construction pipeline is not easy to measure in theprior art. Weight of a target pipeline is measured through a weighing module, simple programming conversion is performed through a density calculation formula, the density of the liquid in the targetpipeline is output, meanwhile, through a limiting device, a situation that measurement precision is affected by inclination of an installation surface or a change of a gravity center in an upward anddownward slope tunneling process of a shield tunneling machine is effectively avoided, and the measurement precision is improved. By means of the method, the density of a medium in the pipeline can beaccurately and reliably monitored in real time, and meanwhile measurement cost is low.

Description

Technical field [0001] The invention relates to the technical field of pipeline medium density measurement, in particular to a non-contact passive pipeline medium density measurement method. Background technique [0002] With the rapid development of my country's economic construction and the advancement of urbanization, more and more urban tunnel construction uses tunnel boring machines. Generally speaking, due to the complex stratum and numerous surface buildings in cities, mud-water balance shield machines are mostly used. The mud-water balance shield machine mainly balances the water and soil pressure of the excavation surface with mud pressure, so as to maintain the stability of the excavation surface. The mud film formed on the tunnel face can reduce the pressure loss of the excavation face and make the mud pressure effectively act on the excavation face. However, the specific gravity of mud is a key factor affecting the quality of the mud film, so it needs to be monitore...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N9/04
CPCG01N9/04
Inventor 俞培德张龙飞顾永升李光周小磊袁丹郭志勇吴豪任云丰李泽魁
Owner CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD