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The Study on Steam Dryness Controller Used in Oil Field Steam Boiler

Author: DongWeiWei
Tutor: BaiShan
School: Shenyang University of Technology
Course: Power Electronics and Power Drives
Keywords: Steam injection Dryness of steam Steam pressure Colorimeter Fuzzy Control
CLC: TP273.4
Type: Master's thesis
Year: 2010
Downloads: 207
Quote: 2
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Abstract


Oilfield DC steam injection is the key equipment in the production of high-pressure steam . Steam dryness injection is an important parameter in the safe operation of steam boilers , is also an important indicator of the impact of heavy oil thermal recovery effect . Steam dryness by multiple parameters , to achieve effective control with a certain degree of difficulty , the steam dryness . The steam injection Since its introduction since the 1980s , has been the progressive realization of the localization of dryness detection is still an artificial laboratory , the detection efficiency is low , dryness control still remains in the original technical level . With the advanced control theory , computer technology continues to evolve , the fuzzy control and other advanced control technology used in steam injection boiler control , improve control efficiency of the boiler control system of the steam injection has become a trend . Looking for a convenient and accurate detection of dryness is also imperative. This paper first introduces the the steam dryness various measurement principles and methods , with reference to the the artificial laboratory ( visual colorimetric ) method , the application of chemical and optical principle, design the steam dryness spectroscopy detection device currently in use . The device implements the titration process automation and intelligent analysis , auto-complete titration process and Spectral Analysis , steam quality can be analyzed after the end of the whole process , without human intervention . Experimental verification apparatus in a stable operation at the same time having a higher detection accuracy . And then analyze the factors that affect the dryness of steam , steam dryness is a strong coupling of the controlled variable , the single-loop PID control anti - disturbance capability is not strong , this paper presents a fuzzy PID controller based on TS model , the first fuzzy reasoning, after pieces using PID control output TS - PID fuzzy controller combines the advantages of fuzzy control and PID control , improve the system of rapid response and anti-jamming capability . Finally, this paper, the design of steam dryness spectroscopy line detection device and TS - PID fuzzy control strategy combining control dryness , experimental results show that the detection of dryness and dryness control have achieved good results . In this paper, the design of the steam dryness spectroscopy detection device has been successfully applied in a steam injection in the Liaohe Oilfield .

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CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation systems > Automatic control,automatic control system > Fuzzy control, fuzzy control system
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