Safety on-line monitor for water circulation of boiler

A technology of water circulation and monitoring instrument, which is applied in the field of measurement, can solve problems such as boiler water wall tube burst, difficulty in finding boiler water wall tube stagnation, backflow, overtemperature, pulsation, leakage, etc., and achieve the effect of accurate diagnosis of faults

Inactive Publication Date: 2008-02-13
TOHOKU DENRYOKU GAKUIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to discontinuous data collection and untimely analysis and control, it is impossible to accurately and timely reflect the boiler water circulation status, make trend predictions, and find stagnation, backflow, over-temperature, pulsation and other phenomena in boiler water-wall tubes, and even boiler water-wall Severe accidents such as pipe burst and leakage occur, forcing the boiler to shut down and causing economic losses

Method used

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  • Safety on-line monitor for water circulation of boiler
  • Safety on-line monitor for water circulation of boiler
  • Safety on-line monitor for water circulation of boiler

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0014] The present invention will be further described below using the embodiments shown in the accompanying drawings.

[0015] Referring to Fig. 1, the boiler water circulation safety online monitor is to connect the pipeline 3a of the boiler steam drum 8 to the differential pressure transmitter 6a through the high-pressure valve 4a and instrument valve 5a connected to the pipeline 3a, and the boiler steam drum 8 is lowered The lower header 19 of the pipe 20 is connected to the parallel instrument valves 5b and 5c through the high pressure valve 4b connected to the lower header 19, the instrument valve 5b is connected to the differential pressure transmitter 6a, and the instrument valve 5c is connected to the pressure transmitter 7a , the instrument valve 5a is connected with the instrument valve 5b through the instrument valve 5d, the boiler steam drum 8 water wall tube 1 is equipped with a velocity measuring tube 2, and the velocity measuring tube 2 is connected with the par...

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Abstract

The invention relates to boiler water circulation safety on-line monitoring apparatus. Its features are that it includes high pressure valve a on boiler drum pipeline; appliance valve a is connected to differential pressure transmitter a; high pressure valve b on the boiler drum down collecting box is connected to the parallel appliance valve b, c; the b is connected to differential pressure transmitter a; the c is connected to pressure transmitter a; the high pressure valve c is connected to parallel appliance valve e, f; the e is connected to pressure transmitter b; the f is connected to differential pressure transmitter b; the high pressure valve a on boiler drum pipeline is connected to appliance valve g; the g is connected to differential pressure transmitter b; the differential pressure transmitter a, b, pressure transmitter a, b, are respectively electrically connected to pressure measuring resistance; thermocouple of the boiler drum is connected the temperature measuring resistance; the resistances are electrically connected to data collector and computer. The invention has the advantages of auto monitoring, and exact failure diagnosis.

Description

technical field [0001] The invention relates to the field of measurement, and is an online safety monitor for boiler water circulation. Background technique [0002] With the development of boilers with large capacity, ultra-high parameters or supercritical parameters, the working conditions of the process in the boiler pot are deteriorating day by day, and the failure rate is high. At present, most of the supervision work of the water cycle in our country is still in the stage of manual meter reading and manual data analysis. Due to discontinuous data collection and untimely analysis and control, it is impossible to accurately and timely reflect the boiler water circulation status, make trend predictions, and find stagnation, backflow, over-temperature, pulsation and other phenomena in boiler water-wall tubes, and even boiler water-wall Serious accidents such as tube burst and leakage occur, forcing the boiler to shut down and causing economic losses. Contents of the inv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01D21/02G01M10/00
Inventor 周云龙张毅孙斌洪文鹏关跃波张玲郭婷婷
Owner TOHOKU DENRYOKU GAKUIN
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