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A high-fidelity and high-purity flue gas sampling system applied to an indirect measurement device for high-temperature flue gas temperature

A measuring device and high-temperature flue gas technology, applied in measuring devices, thermometers, measuring heat, etc., can solve problems such as no methods and devices, and achieve the effect of avoiding pollution

Inactive Publication Date: 2017-01-04
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] After searching the prior art, it is found that there is not yet a method and device for effectively solving the above problems

Method used

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  • A high-fidelity and high-purity flue gas sampling system applied to an indirect measurement device for high-temperature flue gas temperature

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Embodiment Construction

[0016] Now, a high-fidelity and high-purity flue gas sampling system applied to the high-temperature flue gas temperature indirect measurement device of the present patent will be further described with reference to the accompanying drawings.

[0017] The variable-length flue gas sampling pipe 2 is placed inside the double-layer heat-shielding sleeve 3, which is composed of multi-sections of high-temperature-resistant lightweight ceramic pipe sections threaded and sealed with high-temperature-resistant metal gaskets 4; the outer double-layer heat-shielding sleeve 3 is made of material And the connection method is the same as that of the flue gas sampling pipe 2; the shutter separator 1 placed at the front end of the flue gas sampling pipe 2 is used to separate out the solid dust particles in the flue gas in the furnace; the flue gas rich in dust particles passes through the double-layer heat shield The annular pipeline formed by the casing 3 and the flue gas sampling pipe 2 is ...

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Abstract

The invention relates to the field of high-temperature gas temperature measurement, and particularly relates to a high-fidelity high-purity gas sampling system applied to an indirect high-temperature gas temperature measurement device, which is an indirect temperature measurement device on the basis of the principle that heat output of high-temperature gas of a heat-insulation water-cooling sleeve heat exchanger and heat absorption of a cooling medium are balanced. The invention aims at providing a high-fidelity high-purity gas sampling system which can remove solid dust particles in the high-temperature gas sample to obtain high-purity gas and ensure the high-purity gas to be conveyed in a constant temperature and constant gas element mode. The device comprises a louver separator arranged at the front end of the sampling tube, a double-layer heat-shielding sleeve, a gas sampling tube, a metal water cooling support, a support tube heat insulation sleeve, a jetting-type pumping device at the tail part of the heat shielding sleeve, a high temperature-resisting metal gasket and the like. the system can be used for acquisition of gas of a power station boiler and an industrial furnace, the system is connected with a water cooling sleeve-type heat exchanger for indirectly measuring the temperature of the high-temperature gas, and the system can be connected with a gas analyzer for analyzing the gas element and environmental protection monitoring and the like.

Description

technical field [0001] The patent relates to the field of high-temperature flue gas temperature measurement, and is a high-fidelity and high-purity flue gas sampling system applied to an indirect measurement device for high-temperature flue gas temperature. Background technique [0002] More than 85% of boilers and cement kilns in my country use pulverized coal, and the high temperature flue gas produced is generally above 900-1000 °C, and is rich in a large amount of solid ash particles. When ordinary thermocouples are used to measure the flue gas temperature in the furnace, the measurement accuracy is low and the depth of the measurement points is limited. When used for temperature measurement of flue gas with high dust content, the service life is short and the maintenance cost is high due to serious wear and tear. An indirect temperature measurement device based on the balance principle of high temperature flue gas release heat and cooling medium heat absorption of adia...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01K13/12
Inventor 徐顺生杨易霖刘明伟文礼旭樊学农赵梅青李远杨林平罗琼珍周进军王育兴阳才茂张丽娜石永斌刘飞虹武浩欧文剑王超余建赵东勇闫文滨
Owner XIANGTAN UNIV
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