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Method for making air inflows of secondary air pipes of turbulent burner even and measuring device

A swirl burner and secondary air duct technology, applied in the combustion method, burner, burner for burning powder fuel, etc., can solve the problems of uneven pressure, uneven secondary air volume, etc.

Active Publication Date: 2015-11-25
NORTH CHINA ELECTRICAL POWER RES INST +1
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Problems solved by technology

[0009] The invention provides a method and a measuring device for making the air intake of the secondary air duct of the swirl burner uniform, so as to solve the problem of uneven secondary air volume entering the secondary air duct of the swirl burner due to the non-uniform internal pressure of the bellows

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  • Method for making air inflows of secondary air pipes of turbulent burner even and measuring device
  • Method for making air inflows of secondary air pipes of turbulent burner even and measuring device
  • Method for making air inflows of secondary air pipes of turbulent burner even and measuring device

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Embodiment Construction

[0030] In order to make the technical features and effects of the present invention more obvious, the technical solutions of the present invention will be further described below in conjunction with the accompanying drawings. The present invention can also be described or implemented with other different specific examples. Any person skilled in the art is within the scope of the claims. Equivalent transformations made within all belong to the protection scope of the present invention.

[0031] like figure 1 As shown, it is a flow chart of a method for uniformizing the air intake volume of the secondary air duct of a swirl burner according to an embodiment of the present invention, and the method includes:

[0032] Step S1: Detecting the pressure at the inlet of the secondary air duct of the swirl burner. Specifically, the pressure at the inlet of the secondary air duct of the swirl burner is detected by installing a pressure sensor (such as a micromanometer) at the inlet of t...

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Abstract

The invention provides a method for making the air inflows of secondary air pipes of a turbulent burner even and a measuring device. The method includes the steps that the pressure of an inlet of each secondary air pipe of the turbulent burner is detected; and according to the pressure of the inlet of each secondary air pipe of the turbulent burner, the flow area of each secondary air pipe is adjusted, so that the equation shown in the specification is satisfied, wherein Ai is the flow area of the ith secondary air pipe of the turbulent burner, Pi is the pressure of the inlet of the ith secondary air pipe of the turbulent burner, deltaPmx is the largest difference value of the pressure of the corresponding secondary air pipe of the turbulent burner and the negative pressure of a hearth, and const is a constant. By the adoption of the method and the cutter, the problems that the air inflows of the secondary air pipes of the turbulent burner are not even due to the fact that the pressures inside an air box are not uniform can be solved.

Description

technical field [0001] The invention belongs to the field of swirl burners, and particularly relates to a method and a measuring device for making the air intake volume of the secondary air duct of the swirl burner uniform. Background technique [0002] The pulverized coal burner is the main part of the boiler combustion. The performance of the burner has a great influence on the stability and economy of the combustion. Therefore, the use of a reasonable combustion method and stable combustion technology is very important to the operation of the unit. The swirl burner can use the high temperature flue gas in the central recirculation zone to ignite the air-powder mixture, which improves the stability of the flame and occupies a certain proportion in the application field of power station boilers. During the operation of the swirl burner, the primary air channel is located in the middle of the burner, the primary air is straight, and the secondary air enters from both sides o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23D1/02
Inventor 赵振宁张清峰李金晶李战国李媛园
Owner NORTH CHINA ELECTRICAL POWER RES INST
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