本文關(guān)鍵詞： 海洋平臺(tái) 聲發(fā)射 智能點(diǎn)檢 狀態(tài)監(jiān)測(cè) 熱油泵　出處：《北京化工大學(xué)》2011年碩士論文　論文類型：學(xué)位論文

【摘要】：鋼質(zhì)導(dǎo)管架是很多結(jié)構(gòu)體的基礎(chǔ)構(gòu)件,但由于長(zhǎng)期工作在交變重載、沖擊腐蝕的環(huán)境中,導(dǎo)管架極易產(chǎn)生疲勞斷裂而失效；另一方面,隨著設(shè)備投入運(yùn)行時(shí)間的不斷累積,設(shè)備出現(xiàn)故障的可能性大大增加,因此,開(kāi)展并加強(qiáng)對(duì)大型結(jié)構(gòu)件和機(jī)組設(shè)備的健康監(jiān)測(cè)具有十分重要的意義。本文綜合聲發(fā)射技術(shù)和振動(dòng)測(cè)試技術(shù)在故障識(shí)別、故障評(píng)價(jià)及壽命預(yù)測(cè)等方面各自的優(yōu)勢(shì),開(kāi)展了早期故障預(yù)警機(jī)制下的海洋平臺(tái)導(dǎo)管架對(duì)AE波傳播機(jī)制影響研究及基于機(jī)組設(shè)備健康狀態(tài)監(jiān)測(cè)的設(shè)備智能點(diǎn)檢系統(tǒng)開(kāi)發(fā)。 第一篇海洋平臺(tái)導(dǎo)管架對(duì)AE波傳播機(jī)制影響研究。結(jié)合聲發(fā)射技術(shù)的特點(diǎn),針對(duì)海洋平臺(tái)整體性安全監(jiān)測(cè)的現(xiàn)狀,論證了利用聲發(fā)射技術(shù)進(jìn)行海洋平臺(tái)導(dǎo)管架監(jiān)測(cè)的可行性。從彈性波在各向同性固體介質(zhì)中傳播的角度,分析了聲發(fā)射波在鋼質(zhì)空心圓管中的波動(dòng)方程。利用聲發(fā)射數(shù)據(jù)采集系統(tǒng),開(kāi)展聲發(fā)射源在焊縫、彎管、直徑和壁厚四種不同結(jié)構(gòu)特征的鋼質(zhì)空心圓管中傳播的實(shí)驗(yàn)研究,并對(duì)不同位置的傳感器所采集的數(shù)據(jù)進(jìn)行整理和分析,提取了代表聲發(fā)射波傳播特性的參數(shù)。通過(guò)對(duì)各個(gè)參數(shù)的交叉對(duì)比,找出了空心圓管不同的結(jié)構(gòu)特征對(duì)聲發(fā)射波傳播機(jī)制的影響。 第二篇設(shè)備智能點(diǎn)檢系統(tǒng)開(kāi)發(fā)。針對(duì)現(xiàn)場(chǎng)機(jī)組設(shè)備的運(yùn)行和管理情況,利用振動(dòng)測(cè)試技術(shù)對(duì)設(shè)備狀態(tài)參數(shù)拾取的有效性,融合設(shè)備的運(yùn)行維護(hù)與故障管理,開(kāi)發(fā)了基于面向?qū)ο蟮脑O(shè)備健康監(jiān)測(cè)和綜合應(yīng)用平臺(tái)。通過(guò)設(shè)備智能點(diǎn)檢系統(tǒng)在煉油企業(yè)的實(shí)踐,成功地開(kāi)展了常減壓裝置中熱油泵在運(yùn)行過(guò)程中的故障診斷,準(zhǔn)確地定位了故障位置,快速地診斷出故障原因,科學(xué)地評(píng)估了損傷程度,并從介質(zhì)流動(dòng)的角度揭示了故障產(chǎn)生的動(dòng)力學(xué)原理。
[Abstract]:Steel jacket is the basic component of many structures, but because of long term work in alternating heavy load, impact corrosion environment, jacket is prone to fatigue fracture and failure. On the other hand, with the continuous accumulation of equipment operational time, the possibility of equipment failure greatly increased, so. It is of great significance to carry out and strengthen the health monitoring of large structural parts and unit equipment. This paper integrates acoustic emission technology and vibration testing technology in fault identification. The advantages of fault evaluation and life prediction. The influence of offshore platform jacket on AE wave propagation mechanism under early fault warning mechanism and the development of equipment intelligent spot inspection system based on unit equipment health condition monitoring are carried out. The first part is about the influence of offshore platform jacket on AE wave propagation mechanism. Combined with the characteristics of acoustic emission technology, this paper aims at the status quo of integrated safety monitoring of offshore platform. The feasibility of using acoustic emission technology to monitor the jacket of offshore platform is demonstrated from the point of view of elastic wave propagating in isotropic solid medium. The wave equation of acoustic emission wave in steel hollow circular pipe is analyzed. The acoustic emission data acquisition system is used to carry out acoustic emission source in weld seam and bend pipe. Experimental study on propagation of steel hollow circular pipe with four different structural characteristics, diameter and wall thickness, and collation and analysis of data collected by sensors at different positions. The parameters representing the propagation characteristics of acoustic emission wave were extracted and the influence of different structural characteristics of hollow circular tube on the propagation mechanism of acoustic emission wave was found by the cross-comparison of each parameter. The second part is the development of the equipment intelligent spot inspection system. According to the operation and management of the equipment in the field, the vibration test technology is used to pick up the equipment state parameters, and the operation maintenance and fault management of the equipment are combined. The equipment health monitoring and integrated application platform based on object oriented is developed. Through the practice of equipment intelligent point inspection system in oil refining enterprise, the fault diagnosis of hot oil pump in atmospheric and vacuum unit is successfully carried out. The fault location is accurately located, the cause of fault is quickly diagnosed, the degree of damage is scientifically evaluated, and the dynamic principle of fault generation is revealed from the point of view of medium flow.
【學(xué)位授予單位】：北京化工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2011
【分類號(hào)】：TH136;TH165.3

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