Plasma ignition system, control method, and applicable ultra-supercritical boiler

Abstract

The invention discloses a plasma ignition system which comprises a plasma ignition device, a plasma flame detection cooling fan and a boiler flame detection cooling fan, wherein the plasma ignition device comprises an ignition burner, a plasma generation device and a plasma flame detection probe; the plasma generation device and the plasma flame detection probe are arranged corresponding to the ignition burner; the input end of the plasma flame detection cooling fan is in communication connection with the plasma ignition device; the plasma flame detection cooling fan blows wind towards the plasma generation device; when the plasma ignition device and the plasma generation device are started up, the plasma flame detection cooling fan is triggered to start working and to supply plasma carrier wind; when the plasma generation device is shut down, the plasma flame detection cooling fan is controlled to stop working; and the boiler flame detection cooling fan is kept in a normally open state and blows wind towards the plasma flame detection probe. According to the plasma ignition system disclosed by the invention, the plasma flame detection cooling fan and the plasma ignition device are started up and shut down in a linked manner, thereby reducing the equipment operation, lowering the energy consumption, and reducing the maintenance.

Description

technical field [0001] The invention relates to boiler ignition technology, in particular to a plasma ignition system, a control method and an applicable ultra-supercritical boiler. Background technique [0002] In recent years, due to the continuous tension in the demand for traditional boiler fuels such as coal, oil, and natural gas, and the continuous rise in prices, the cost of fuel oil for commissioning and operation has been rising steadily. In order to reduce diesel consumption, most thermal power plants in my country have introduced plasma ignition systems to reduce commissioning and operating fuel costs. However, in this era of increasingly fierce competition, energy saving for enterprises is particularly important. The problem of energy consumption is particularly prominent. [0003] The plasma ignition device uses direct current to contact the arc under the condition of medium pressure 0.004 MPa ~0.03 MPa, and obtains stable power of direct current air plasma unde...

AI Technical Summary

Problems solved by technology

Since the plasma ignition device has been in an emergency standby state during the normal operation of the unit, its cooling fan has been running continuously, resulting in waste of plant power and energy loss

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