A laser emitting and receiving device, a furnace coke loss monitoring system and method

Abstract

The invention discloses a laser emitting and receiving device, which is arranged at the bottom of a boiler, and comprises two upper layer laser emitting and receiving units and a lower layer laser emitting and receiving unit arranged in parallel and separated by a certain vertical distance. The receiving units respectively include several uniformly arranged lasers, and the two lasers arranged on opposite walls respectively measure the horizontal distance from the lasers to the coke blocks dropped in the boiler. Also disclosed is a coke drop monitoring system and method in the furnace, which can obtain the height and horizontal position of the coke pieces falling in the furnace, so as to know the location of serious coking or large coke in the furnace, so as to carry out targeted operation adjustments measure. The overall coking and coke loss status in the furnace can be obtained, and the coal quality can be fed back according to the amount of coke, and the slagging equipment can be adjusted according to the monitoring results of the coke amount.

Description

technical field [0001] The invention relates to the technical field of thermal power generation, in particular to a laser emitting and receiving device, a coke drop monitoring system and method in a furnace. Background technique [0002] With the need for the sustainable development of my country's electric power industry and the national economy, clean energy such as wind power, solar energy, and nuclear power are connected on a large scale, and the installed capacity of thermal power is severely surplus. More and more power plants have to reduce power generation by burning economical coal. The cost has led to the increasingly prominent problem of boiler coking, seriously affecting the safe and economical operation of the unit, and increasing the workload of power plant operation and maintenance personnel. At the same time, with the development of information technology in recent years, the willingness to build a smart power plant has become stronger. The basis of a smart po...

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Problems solved by technology

[0002] With the need for the sustainable development of my country's electric power industry and the national economy, clean energy such as wind power, solar energy, and nuclear power are connected on a large scale, and the installed capacity of thermal power is severely surplus. More and more power plants have to reduce power generation by burning economical coal. cost, leading to increasingly prominent boiler coking problems, seriously affecting the safe and economical operation of the unit, and increasing the workload of power plant operation and maintenance personnel

At the same time, with the development of information technology in recent years, the willingness to build a smart power plant has become stronger. The basis of a smart power plant is the improvement of the terminal monitoring system. Since the coking problem occurs in a high-temperature environment in the furnace, the monitoring of coking in the furnace is very important. Difficult. At present, the technicians only judge the coke loss inside the boiler through the flame detection signal and experience, and determine which wall the coke falls to. At present, there is no reliable technical means to accurately determine the coking position during the hot operation process.

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