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Gas flow measurement system

A gas flow and measurement technology, which is applied in the field of measurement systems, can solve the problems such as the inability to implement exhaust gas emission flow control and the inability to be detected online, and achieve the effect of solving the inability to be detected online.

Active Publication Date: 2019-08-27
THERMO FISHER SCI SHANGHAI INSTR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is currently no effective way to detect the pressure gauge of the gas flow measurement system online. To judge whether it is in normal operation, it often needs to be carried out by engineering personnel on site, so that the flow control of exhaust gas emission cannot be implemented.
[0004] Therefore, how to solve the problem that the pressure gauge in the gas flow measurement system cannot be detected online has become a technical issue of concern in the industry.

Method used

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Examples

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no. 1 example

[0015] see Figure 1 to Figure 2 , is a schematic diagram of the first embodiment of the gas flow measurement system of the present invention. As shown in the figure, the gas flow measurement system 1 of this embodiment can be installed in the discharge pipeline of exhaust gas, and has a static pressure gauge 11, a total pressure gauge 12, an atmospheric gauge 14, a pressure gauge 15, a static pressure pipeline 131 and Full pressure line 132. Among them, for example, the pressure gauge 15 is a pressure differential pressure gauge. The static pressure gauge 11 and the total pressure gauge 12 are used to respectively receive the static pressure and the total pressure of the gas flow in the measurement environment, and the measurement environment is the inner space of the discharge pipeline. One end of the static pressure pipeline 131 and the total pressure pipeline 132 are connected to the static pressure gauge 11 and the total pressure gauge 12 respectively, and the other end...

no. 2 example

[0027] see image 3 , is a schematic diagram of the second embodiment of the gas flow measurement system of the present invention. The main difference between this embodiment and the above-mentioned first embodiment is that a seventh gate valve 1322 that is opened in a normal state is added on the total pressure pipeline 132, wherein the seventh gate valve 1322 is close to the pressure gauge 15, and can cut off the pressure gauge 15 from the total pressure. The communication of pipeline 132.

[0028] When the gas flow measurement system of the present invention performs the third abnormality detection, the controller 19 will close the second gate valve 1321 and the seventh gate valve 1322, thereby cutting off the communication between the total pressure gauge 12 and the pressure gauge 15 and the total pressure pipeline 132 . Next, make the air pressure source 17 supply gas to the detection pipeline 133, so that the air pressure inside the full pressure pipeline 132 conforms ...

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Abstract

The present invention relates to the technical field of measurement systems, and provides a gas flow measurement system, a pressure gauge can be obtained by measuring the ambient airflow static pressure and differential pressure of the total pressure, for estimating a flow rate of the ambient air flow measurement, on-line to the timing automatic fashion, for detecting the air pressure of the pressure gauge is input to an analog pressure gauge, thereby judging whether or not abnormal, even the full pressure pipeline input analog detection, thereby judging whether the air pressure is abnormal or not full pressure pipeline.

Description

technical field [0001] The invention relates to the technical field of measurement systems, in particular to a gas flow measurement system for estimating flow through the pressure difference between static pressure and total pressure. Background technique [0002] Due to the advancement of human industry, the air pollution in the living environment has gradually increased. For humans, air pollution will affect human health and cause respiratory and other diseases. For example, it will cause asthma, dry cough, headache and eye, nose, etc. Allergies with throat. [0003] Therefore, how to reduce air pollution has become a common topic for major industrial countries in the world. In Taiwan, the Environmental Protection Agency has required the discharge of exhaust gas to be controlled by flow, so that a gas flow measurement system is usually installed in the exhaust gas discharge pipeline, and the pressure gauge in the gas flow measurement system is used to measure The pressur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01F1/34G01L27/00
Inventor 张健国
Owner THERMO FISHER SCI SHANGHAI INSTR CO LTD