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Blocking failure judgment method of CFB (Circulating Fluidized Bed) boiler return system

A technology for fault judgment and material return, which is applied in the combustion method, the fuel burning in the molten state, and the geophysical measurement. It can solve the problems of poor timeliness of fault judgment, long cooling time, and high safety risks, and achieve accurate judgment and high safety. , to ensure the effect of safety

Active Publication Date: 2019-12-17
HMEI THREAD CO LTD OF YINBIN SICHUAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing method has poor timeliness for fault judgment, and the temperature needs to be lowered to below 40°C, which takes a long time to cool down; the safety risk is high, and personnel enter the separator to observe during the inspection, and ash flow is very easy to occur during the opening of the return valve manhole and the dredging process spray burn accident

Method used

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  • Blocking failure judgment method of CFB (Circulating Fluidized Bed) boiler return system
  • Blocking failure judgment method of CFB (Circulating Fluidized Bed) boiler return system
  • Blocking failure judgment method of CFB (Circulating Fluidized Bed) boiler return system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The method for judging the clogging fault of the CFB boiler return system includes the following steps:

[0040] Step (1) The auscultation personnel carry the auscultation equipment and prepare at the return valve, and the detection object 2 release personnel carry 3 pieces of detection object 2 and prepare at the manhole 1 of the CFB boiler separator;

[0041] Step (2) After the auscultation personnel are ready for the auscultation, the auscultation personnel issue an instruction to release the detection object 2 to the detection object 2 release personnel;

[0042] Step (3) The test object 2 release personnel releases a piece of test object 2 into the separator; at the same time, the auscultation personnel at the return valve perform auscultation;

[0043] Step (4) After waiting for 1 minute, repeat steps (2) (3) until the detection substance 2 is released;

[0044] Step (5) Judge the inspection result.

[0045] The method for troubleshooting the clogging of the CFB...

Embodiment 2

[0052] (1) One person with 23 test objects, 1 part of the contact equipment to the boiler separator manhole 1 is the person who released the test object 2; two people with auscultation equipment, and the contact equipment to the return valve are the auscultation personnel; (2) when After the auscultation personnel at the return valve are ready for auscultation, use the contact device to release the test object 2 at the separator to issue an instruction to release the test object 2; (3) The test object 2 release personnel releases a piece of the test object 2 into the separator after hearing the instruction Test object 2; auscultate at the return valve. Two people judge whether the return system is blocked according to whether they hear the sound of test object 2 hitting the return air distribution plate; (4) Wait for one minute and repeat (2) (3) Step until the detection substance 2 is released; (5) Judging the inspection result.

[0053] After the release of the three pieces ...

Embodiment 3

[0057]Implementation steps: (1) One person takes one piece of contact equipment to the ash discharge pipe 6 in the return air chamber as an observer, opens the valve 6 of the ash discharge pipe in the return air chamber, and vents the remaining ash in the return air chamber; (2) two One part of the contact device, the special return device detection and dredging device to the manhole 1 of the boiler separator as dredging personnel; (3) After the return valve is emptied, the dredging personnel will carry the dredging device with the heavy object 4 from the separator. Put hole 1 to the blockage position of the boiler return system, and fix the other end outside the furnace; at this time, the dredging personnel judge the blockage position according to the length of the dredging device (this method can also be used as a method for judging the blockage fault of the CFB boiler return system); ( 4) The dredging personnel lift and lower the dredging device repeatedly, so that the heavy...

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Abstract

The invention relates to a blocking failure judgment method of a CFB (Circulating Fluidized Bed) boiler return system. The blocking failure judgment method comprises the following steps that (1) auscultation personnel carry auscultation equipment to prepare in the position of a return valve, and detection object releasing personnel carry three detection objects to prepare in the position of a manhole of a CFB boiler separator; (2) after the auscultation personnel prepare for auscultation, the auscultation personnel send a detection object releasing instruction to the detection object releasingpersonnel; (3) the detection object releasing personnel release one detection object to the separator, and the auscultation personnel in the position of the return valve auscultate at the same time;(4) the steps (2) and (3) are repeated until all of the detection objects are released after waiting for one minute; and (5) the inspection result is judged. According to the blocking failure judgmentmethod, the blocking failure of the CFB boiler return system is judged outside a boiler, so that the safety is high, the operating process shows the people oriented idea, and safety accidents are avoided.

Description

technical field [0001] The invention relates to the field of boiler fault judgment, in particular to a method for judging a blockage fault of a CFB boiler return system. Background technique [0002] The material return system is one of the key parts of the CFB boiler. If a failure occurs, the amount of circulating materials in the furnace will be insufficient, and the bed temperature will rise sharply and be difficult to control, endangering the load and normal and stable operation of the boiler. The phenomenon of blockage of the feeder is a frequent failure of the feeder system in the operation of domestic CFB boilers. Experts and scholars from all over the world are doing research and discussion in this area, mainly from the optimization of the design of the reformed feeder system itself and from the operation Make adjustments to reduce the frequency of CFB boiler return blockage. [0003] At present, the return system of the CBF boiler has a failure in the return system...

Claims

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Application Information

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IPC IPC(8): F23C10/18G01V1/00
CPCF23C10/18G01V1/00
Inventor 张西平胡代强熊孝勇
Owner HMEI THREAD CO LTD OF YINBIN SICHUAN
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