Non-intrusive flow measuring device for industrial gas pipeline

A flow measurement device and industrial gas technology, applied in the application of thermal effects to detect fluid flow, etc., can solve the problems of difficult gas measurement, lack of mature technology and products, etc., achieve convenient and fast flow monitoring, avoid unnecessary losses, and save energy Effect

Active Publication Date: 2011-07-20
BEIHANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The non-intrusive measurement of gas is difficult,

Method used

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  • Non-intrusive flow measuring device for industrial gas pipeline
  • Non-intrusive flow measuring device for industrial gas pipeline
  • Non-intrusive flow measuring device for industrial gas pipeline

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Experimental program
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Embodiment Construction

[0022] exist figure 1 Among them, the equipment main body 4 and the equipment auxiliary body 1 have been installed on the pipe 11 as required, the restraint devices 7 and 10 make the equipment close to the pipe wall, and the heat pulse generating device 6 sends out heat pulses as required, and the pulse runs along the pipe wall against The direction of the airflow propagates upstream. The closer downstream temperature sensor 8 first measures the heat pulse, and then the farther upstream temperature sensor 2 measures the pulse. Due to the influence of distance and gas flow heat dissipation, the temperatures measured by the two sensors There is a time difference in the signal, and the host 5 converts the time difference and corrects it with reference to the existing data to obtain the actual gas flow and display it. exist figure 2 Among them, the U-shaped aluminum alloy frame 3 is designed so that the thermal pulse generating device can be attached to the outer wall of the tub...

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Abstract

The invention discloses a non-intrusive flow measuring device for an industrial gas pipeline, which is used in the fields of industrial production, energy metering, aerospace and the like to realize the non-intrusive measurement of the air flow in the pipeline and realize the energy-saving, quick and convenient flow monitoring. Mainly based on a thermal type principle, the device adopts a measurement technique based on temperature change and time difference as well as corresponding analysis methods to create innovation in and make improvement on the thermal type flow measuring devices available on the market to improve the application performance and range of these devices. Therefore, the device has an unprecedented development prospect in related fields. The hardware part of the device mainly comprises a thermal pulse generator, a temperature sensor, a temperature controller and a signal acquiring and processing machine. The flow rate is reflected by the influences of the air flow in the pipeline on the time of the transmission of the thermal pulse by the pipe wall, and thus, the non-intrusive measurement is realized. The data process program in the signal acquiring and processing machine can effectively solve the problems such as environmental interferences, so that correct and accurate measurement is realized.

Description

technical field [0001] The invention belongs to the field of flow measurement and relates to a non-intervention measuring device applicable to gas flow in industrial pipelines. Background technique [0002] Flow measurement is a science that studies the quality change of substances, and plays a pivotal role in the development of modern society. Gas is one of the main objects of flow measurement. As a form of energy or an energy carrier, gas is more and more widely used in industry. [0003] Traditional flowmeters used for gas flow measurement are all invasive devices that need to be connected in series to pipelines. Not only is the operation complicated, but it also interferes with the original flow, and there are problems such as pressure loss and fouling of the probe. Non-intrusive measurement technology can avoid the above disadvantages by performing flow measurement without dismantling the original pipeline, and can also realize the advantages of multi-point measuremen...

Claims

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Application Information

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IPC IPC(8): G01F1/68
Inventor 范子川蔡茂林
Owner BEIHANG UNIV
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