Flue gas sampling auxiliary device suitable for high temperature positive pressure flue
A flue gas sampling and auxiliary device technology, applied in the direction of sampling devices, etc., can solve the problems of high risk, flue gas sampling holes that cannot be used for high temperature and positive pressure flue gas sampling places, etc., to prevent high temperature burns or toxic gas damage, installation The effect of flexibility and strong interface versatility
Pending Publication Date: 2019-08-16
ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY +2
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Problems solved by technology
It can be seen that the existing flue gas sampling holes are not suitable for high-temperature and positive-pressure flue gas sampling sites. If the online operation process is dangerous, if the offline operation process needs to start and stop the unit
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[0042] The specific examples described in the following embodiments of the present invention are only used as illustrations of specific embodiments of the present invention, and are not intended to limit the scope of the present invention.
[0043] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0044] figure 1 It is a structural schematic diagram of the flue gas sampling auxiliary device of the present invention when it is applied. The flue gas sampling auxiliary device includes a front external connection pipe 1, a rear external connection pipe 6, an ejector 5, a sampling pipe 3, a mixing pipe 4, a working gas source 9, and an injection pipe 7. Purge pipe 23 , emergency gas source 10 , air seal pipe 8 , first connecting piece 2 and second connecting piece 20 . Both the front external connection pipe 1 and the rear external connection pipe 6 are installed on the wall of the flue; the front extern...
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The invention discloses a flue gas sampling auxiliary device suitable for a high temperature positive pressure flue. Existing flue gas sampling holes cannot be applied to the high temperature positivepressure flue gas sampling places. In the invention a sampling tube, a first connecting member and a front external tube form a coaxial tube section perpendicular to the wall surface of the flue as aflue gas sampling hole; the air flowing into one end of the sampling tube forms a seal to the flue gas flowing into the other end, the air in the environment enters from the flue gas sampling hole that has been unplugged and turns into a mixing tube after passing through a second ball valve; at the same time, the flue gas enters the front external tube from the flue, and turns into the mixing tube through the first connecting member and the sampling tube; the air and the flue gas are sucked into an ejector together through the mixing tube, pass through a second connecting member and a rear external tube together with the compressed air, and are finally injected into the flue. The flue gas sampling auxiliary device can prevent high temperature burn or toxic gas damage caused by high temperature flue gas leakage, and can provide online smoke sampling conditions without restarting and stopping.
Description
technical field [0001] The invention belongs to the technical field of gas sampling, in particular to an auxiliary device for sampling high-temperature positive-pressure flue gas. Background technique [0002] The flue gas produced by fuel combustion flows in the flue and chimney, and the flue gas pressure in all or part of the pipe section may be positive pressure. When flue gas sampling is carried out in a positive-pressure flue or chimney, the flue gas is easy to leak, especially the high-temperature flue gas leakage, which has higher safety hazards, and may easily cause personnel poisoning, skin burns, and fires of surrounding combustibles. ACCIDENT. The flue gas sampling hole is generally composed of an external pipe section and a plug (such as a threaded cover, a flange, a plug, etc.), which is opened when the flue gas is sampled, and reinstalled when the flue gas sample is completed. However, in the high-temperature positive pressure flue or chimney place, opening t...
Claims
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IPC IPC(8): G01N1/24
CPCG01N1/24
Inventor 张晓龙吕洪坤李剑刘虎
Owner ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY