Power station boiler multi-tubular multifunctional sampling gun

Abstract

A power station boiler multi-tubular multifunctional sampling gun comprises a thermocouple sheath (1), a fixed ring (3), a plurality of sampling tubes (4) with different lengths, a step tube base (5), three-way tubes (6) with control valves, the control valves (7), a mixer (8), a mixed sampling tube (9) and a thermocouple temperature brake (10). The surface of the thermocouple sheath (1) is provided with holes (2) and is also provided with thermocouples and output brakes same to steel tubes in quantity and length. Every sampling tube is provided with the three-way tube with the control valve behind the step tube base and is provided with the control valve in front of the mixer. The mixer (8) and the mixed sampling tube (9) gather all sampled smoke components into the mixer. The control valves are adjusted to realize simultaneous sampling of sampling points with different lengths in flue through the plurality of tubes, and also realize a single-tube sampling function. The control valves are sequentially operated to realize sequential sampling function of the plurality of the sampling tubes, and prevent the air leaking phenomenon in the single-tube extracting and poking process.

Description

technical field [0001] The invention relates to a multi-tube multifunctional sampling gun for a power station boiler, which belongs to the technical field of gas sampling and measurement. Background technique [0002] In the combustion process of power plant boilers, combustion in the furnace is an important indicator of boiler control. Oxygen, carbon monoxide, carbon dioxide, nitrogen oxides, and sulfur dioxide produced in the flue gas during the combustion process are all important monitoring data, especially for boiler efficiency calculations, air Accurate sampling of flue gas components is very important in the calculation of the air leakage rate of the preheater and the emission value. At the same time, under the pressure of environmental protection, energy saving and environmental protection are becoming more and more new. Today, more accurate flue gas sampling devices are required, which also puts forward higher requirements for flue gas sampling devices. At present,...

AI Technical Summary

Problems solved by technology

At present, the flue gas sampling of power plant boilers mostly uses a single fixed-length sampling steel pipe. The sampling of a single steel pipe is time-consuming and labor-intensive with poor accuracy, and the measured data is not representative, and it cannot meet the requirements of the national standard grid method measurement.

Images