High-temperature flue gas temperature measurement water cooling protection device

Abstract

The invention discloses a high-temperature flue gas temperature measurement water cooling protection device; the high-temperature flue gas temperature measurement water cooling protection device comprises a temperature measurement element, a first protection sleeve and a second protection sleeve, wherein the second protective sleeve comprises an outer sleeve and an inner sleeve, and a first cavityis formed between the outer sleeve and the inner sleeve; a second cavity is formed between the inner sleeve and the first protective sleeve; a rotary chamber communicated with the first cavity and the second cavity is further arranged; and a water inlet is formed in the outer sleeve, and an outer water outlet and an inner water outlet are formed in the outer sleeve and the inner sleeve respectively. The temperature measuring element is placed in the first protection sleeve, so that the safety of the temperature measuring element can be protected, and the water flow enters from the water inlet, water circulation is formed in the cavity, and finally flows out from the inner water outlet and the outer water outlet, so that the first protection sleeve is directly subjected to water cooling, the temperature in the first protection sleeve is reduced, and the temperature measurement element is prevented from deforming due to high temperature, the use safety of the temperature measurement element is effectively protected, and the safe temperature measuring of the high-temperature flue gas is realized.

Description

technical field [0001] The invention relates to the field of temperature detection, in particular to a water cooling protection device for temperature measurement of high-temperature flue gas. Background technique [0002] At present, thermal power generation is still the main source of electricity. The combustion efficiency of boilers in thermal power plants directly determines the efficiency of power generation. Therefore, thermal power plants need to regularly measure the temperature of the boiler furnace to determine the combustion state in the boiler. The temperature is generally above 850°C, so this has higher requirements for the temperature measuring device. [0003] The temperature measuring devices mainly include non-contact temperature measuring devices and contact temperature measuring devices. The non-contact temperature measuring devices are mainly measured by infrared thermometers. However, because the flue gas in the boiler furnace is gaseous and luminous, an...

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Problems solved by technology

[0003] The temperature measuring devices mainly include non-contact temperature measuring devices and contact temperature measuring devices. The non-contact temperature measuring devices are mainly measured by infrared thermometers. However, because the flue gas in the boiler furnace is gaseous and luminous, and the temperature distribution is uneven, The composition is not fixed, coupled with the presence of fly ash particle radiation, resulting in large measurement errors

[0004] At present, the commonly used contact temperature measuring device is mainly measured by the telescopic thermometer, but when the smoke temperature in the boiler furnace reaches a certain value, in order to protect the connection and supporting parts of the temperature measuring element in the telescopic thermometer, the telescopic thermometer must be withdrawn. Boiler furnace, poor measurement

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