High-temperature flue gas flow on-line measuring probe

Abstract

The invention discloses a high-temperature flue gas flow on-line measuring probe which is used for monitoring the flow of a high-temperature flue gas outlet pipe and comprises an outer pipe and an inner pipe concentrically arranged in the outer pipe, the outer pipe and the inner pipe each comprise a vertical section and a horizontal section, and the end of the vertical section of the outer pipe and the end of the vertical section of the inner pipe are both opposite to the flowing direction of high-temperature flue gas; the outer part of the horizontal section of the outer pipe is sleeved with a mounting flange, and the outer pipe is fixed on the high-temperature flue gas outlet pipe through the mounting flange; the lower end of the vertical section of the inner pipe is provided with a total pressure hole, the end of the horizontal section of the inner pipe extends out of the outer pipe and is communicated with an external total pressure pipe, the vertical section of the outer pipe is provided with a static pressure hole, and the end of the horizontal section of the outer pipe is connected with a static pressure pipe; the outer part of the outer pipe is concentrically sleeved with a cooling pipe; the cooling pipe is used for cooling the probe, heat conduction of external high-temperature flue gas is isolated, the purpose of measuring the flue gas flow in a high-temperature environment is achieved, and the service life of the probe is prolonged.

Description

technical field [0001] The invention relates to the technical field of flue gas measurement, in particular to an online measuring probe for high-temperature flue gas flow. Background technique [0002] Petroleum refining and petrochemical industries will produce a large amount of VOCs (volatile organic compounds) emissions during oil production, storage, and transportation. Most VOCs are toxic and irritating, and will cause great harm to human health. For To meet the country's increasingly stringent VOCs emission standards, environmental protection treatment devices mostly use incineration to dispose of VOCs. [0003] The waste gas containing VOCs enters the environmental protection treatment device, and the waste gas is incinerated to produce high-temperature flue gas. In order to check whether the incineration efficiency of the environmental protection treatment device meets the environmental protection standards, it is generally necessary to measure the flue gas flow rate...

AI Technical Summary

Problems solved by technology

[0004] Technical purpose: In view of the deficiency that the existing flue gas flow measurement probe cannot continue to work in a high temperature environment, the present invention discloses a high temperature flue gas with a self-cooling function, which can withstand high temperature flue gas burning, and can measure flue gas volume flow online. Flow online measurement probe

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