本文選題：PCS7 + 正壓法��； 參考：《哈爾濱工業(yè)大學》2015年碩士論文

【摘要】：濕氣在天然氣生產(chǎn)過程中有很大的影響,由于油氣生產(chǎn)過程中必然伴隨著液相和氣相的混合,因此需要對濕氣的流量計量進行研究,分析液相的存在對于氣體流量計的氣體計量準確的影響。氣體流量計在濕氣環(huán)境下的計量標定需要一個檢定試驗裝置,可以利用臨界流音速噴嘴計量檢定的方法對氣體流量計進行濕氣環(huán)境下的計量標定。本課題主要是研制濕氣檢定裝置,因而重點提出了濕氣檢定裝置的整體設計方案和具體分系統(tǒng)的實現(xiàn)方案。首先整體設計方案設計分析了系統(tǒng)的構成,各個分系統(tǒng)的實現(xiàn)方案和相應指標,濕氣檢定系統(tǒng)由穩(wěn)壓氣路,音速噴嘴校準器,高壓霧化混合和濕氣輸出組成。其次是分析了臨界流音速噴嘴檢定氣體流量計的理論和穩(wěn)壓罐體的數(shù)學模型,為后期檢定軟件設計和穩(wěn)壓罐體的壓力控制提供理論依據(jù)。再次詳細描述了PCS7集散控制系統(tǒng)的軟硬件實現(xiàn)的過程,對氣體回路進行實時監(jiān)控,遠程監(jiān)控各設備的運行狀態(tài),同時PCS7全集成系統(tǒng)實現(xiàn)濕氣環(huán)境下對待檢儀表的檢定,記錄相關數(shù)據(jù)依據(jù)各型號的儀表檢定規(guī)程得出相應的檢定報告。最后對進入音速噴嘴的上游的氣源壓力的穩(wěn)壓效果進行現(xiàn)場測試,驗證了減壓閥和穩(wěn)壓罐體聯(lián)合作用的穩(wěn)壓效果,同時對濕氣加濕量的穩(wěn)態(tài)過程進行仿真,為后期濕氣加濕硬件實現(xiàn)奠定基礎。
[Abstract]:The wet gas has a great influence in the natural gas production process. Because the mixture of liquid and gas is inevitable in the process of oil and gas production, it is necessary to study the flow measurement of wet gas. The influence of liquid phase on gas measurement of gas Flowmeter is analyzed. The calibration of gas Flowmeter in wet gas environment requires a calibration test device, and it can be calibrated in wet environment by using the method of critical flow sonic nozzle measurement and calibration. The main task of this paper is to develop the wet gas verification device, so the whole design scheme of the wet gas verification device and the realization scheme of the concrete sub-system are put forward. Firstly, the whole design scheme is designed and analyzed. The system is composed of steady pressure gas path, sonic nozzle calibrator, high pressure atomization mixing and moisture output. Secondly, the theory of critical flow nozzle calibration gas Flowmeter and the mathematical model of steady pressure tank are analyzed, which provides the theoretical basis for the later verification software design and the pressure control of steady pressure tank. The software and hardware realization of PCS7 distributed control system is described in detail again. The real-time monitoring of gas loop and the remote monitoring of the running state of each equipment are carried out. At the same time, the PCS7 integrated system realizes the verification of the inspection instrument under the wet gas environment. Record relevant data according to each type of instrument verification regulation to obtain the corresponding verification report. Finally, the steady pressure effect of the upstream gas source pressure entering the sonic nozzle is tested on the spot, which verifies the stabilizing effect of the combined action of the pressure reducing valve and the steady pressure tank. At the same time, the steady state process of the wet gas humidification is simulated. Lay the foundation for the later wet air humidification hardware realization.
【學位授予單位】：哈爾濱工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TE967

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本文編號：1810492