Radiation device for gas heating value instrument and method for measuring gas heating value
A radiation device and gas calorific value technology, which is applied in the field of radiation device and gas calorific value measurement, can solve the problems of poor operation stability and high cost, and achieve the effects of preventing misfiring or tempering, convenient use, and low price
Inactive Publication Date: 2019-02-19
NORTHEASTERN UNIV
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Problems solved by technology
[0008] Aiming at the shortcomings of the gas calorific value meter in the prior art, such as poor operation stability, high instrument cost and high measurement cost, the problem to be solved by the present invention is to provide a gas calorific value meter with good operation stability and no maintenance costs. Measuring method of radiant tube on instrument and calorific value of gas
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[0039] The present invention will be further elaborated below in conjunction with the accompanying drawings of the description.
[0040] Such as figure 1 As shown, the present invention is a radiant device for gas calorific value instrument, including combustion chamber 3 and radiant tube 2, combustion chamber 3 extends into radiant tube 2 through the open end of radiant tube 2, and is connected with radiant tube 2 Installed coaxially inside the radiant tube; the bottom end of the combustion chamber 3 is connected to the flue gas pipe 8, and the flue gas pipe 8 has an auxiliary gas pipe 5 and a gas pipe 11; the outlet ends of the combustion chamber 3 and the auxiliary gas pipe 5 are located in the radiant tube ; The inlet ends of the flue gas pipes 8 are located in the radiant tube 2 .
[0041] The radiant tube 2 is provided with an aspirated thermocouple 1 for measuring the temperature distribution of the wall surface of the radiant tube 2, and the measuring points are distr...
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Abstract
The invention relates to a radiation device for a gas heating value instrument and a method for measuring a gas heating value. The radiation device comprises a combustion chamber and a radiation pipe.The combustion chamber extends into the radiation pipe through the open end of the radiation pipe and is mounted in the radiation pipe in a coaxial manner with the radiation pipe. The bottom end of the combustion chamber is connected with a flue gas pipeline, and a combustion-supporting gas pipeline and a gas pipeline are provided in the flue gas pipeline. The combustion chamber and the outlet end of the combustion-supporting gas pipeline are located in the radiation pipe. The inlet end of the flue gas pipeline is located in the radiation pipe. The method comprises the following steps: determining a gas supply amount; determining a total heat carried by the air; determining a total heat carried by a fuel; determining a total heat contained in the flue gas of the combustion product; determining a radiation heat flow obtained by heat exchange of the radiation pipe and the flue gas; and measuring a net heating value by utilizing a heat balance principle in the combustion process according to the heat balance principle in the combustion process. According to the radiation device for the gas heating value instrument and the method for measuring the gas heating value, the surface temperature of the radiation pipe is measured, the heat balance principle is applied to measure the net heating value, so that the operation is simple, the measurement is convenient, and the operation stability is good.
Description
technical field [0001] The invention relates to a gas calorific value meter, in particular to a radiation device for the gas calorific value meter and a method for measuring the gas calorific value. Background technique [0002] In the management and application of natural gas, producer gas, biogas, coke oven, blast furnace, converter gas and various mixed gas in metallurgical industry, the calorific value of gas is a basic and important parameter, and timely and accurate measurement of gas The calorific value is of great significance for scientifically and rationally organizing the energy balance of communities and enterprises, producing and efficiently utilizing gas heat energy, and saving energy. There are currently several methods of measuring calorific value: [0003] (1) Component analysis method, using a gas chromatograph to separate each chemical component in the gas, and calculating the cumulative calorific value of the gas, the gas chromatograph used in this metho...
Claims
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IPC IPC(8): G01N25/22
CPCG01N25/22
Inventor 李娜伊智李成姜潇张卫军
Owner NORTHEASTERN UNIV