Laser transmitting and receiving device and system and method for monitoring coke falling in furnace

Abstract

The invention discloses a laser transmitting and receiving device which is arranged on the bottom of a boiler, wherein an upper-layer laser transmitting and receiving unit and a lower-layer laser transmitting and receiving unit are arranged in parallel and spaced by a certain vertical distance; each of the upper-layer laser transmitting and receiving unit and the lower-layer laser transmitting andreceiving unit comprises a plurality of uniformly arranged lasers; and the two lasers arranged on opposite walls respectively measure the horizontal distances from the lasers to coke blocks falling into the boiler. The invention also discloses an in-furnace coke falling monitoring system and method, and the height and the horizontal position of the in-furnace coke falling block can be obtained, so that the position of serious coking or large coking in the furnace can be known, and the targeted operation adjustment measure can be carried out. According to the method, the overall coking and coke falling condition in the furnace can be obtained, the coal quality condition is fed back according to the quantity of the coking quantity, and the deslagging equipment is specifically adjusted according to the coking quantity monitoring result.

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...

AI Technical Summary

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.

Images