本文關(guān)鍵詞： 超高壓 節(jié)流閥 密封件 研制　出處：《西南石油大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：節(jié)流閥作為井口節(jié)流降壓裝置,是天然氣在開采過程中必不可少的設(shè)備之一。國內(nèi)某高壓氣田,由于其天然氣工況惡劣,所屬的油田公司均與國外知名公司合作,選用他們的產(chǎn)品。但是在這些進口節(jié)流閥使用過程中,卻也存在著不少問題,如可靠性低、采購周期長、易損件價格日益昂貴等,國內(nèi)相關(guān)氣田對實現(xiàn)該類節(jié)流閥國產(chǎn)化的呼聲越來越大。結(jié)合市場需要,同時為了打破國外廠家的壟斷,國內(nèi)某廠家已成功研制出了適用于該氣田的超高壓籠式節(jié)流閥。而密封件作為節(jié)流閥上必不可少的配件,它的成功研制是保證國產(chǎn)節(jié)流閥成功應(yīng)用的必要條件。 本文從密封件的使用工況入手,分析出該密封件的使用工況為高壓、高溫、強腐蝕,且同時含有靜密封和動密封兩種密封形式。結(jié)合密封件的使用工況、閥門常用密封件和實際調(diào)研,選擇了泛塞封作為本文所涉及節(jié)流閥的密封件,而在泛塞封常用的三種彈簧中,根據(jù)彈簧特性和實際使用效果,選擇了Slantciol彈簧為泛塞封的彈力補償件。在密封件外形設(shè)計時,首先根據(jù)密封溝槽尺寸和初定密封預(yù)變形量,設(shè)計出密封件外形尺寸,再利用ABAQUS仿真軟件模擬其密封效果,并分析討論了不同預(yù)變形量下的密封效果,選擇出了最佳預(yù)變形量。 泛塞封的基體一般為聚四氟乙烯復(fù)合物,本文分析了各種改性方法及其優(yōu)點,結(jié)合密封件的使用工況,同時經(jīng)多次1：1工裝密封試驗,確定了所設(shè)計密封件的配方為純聚四氟乙烯+10%碳纖維。為驗證所研制密封件的氣密封效果,設(shè)計和制造了一種能測試所有密封件密封性能的工裝,并選擇105Mpa和70Mpa氣壓模擬節(jié)流閥進出口壓力進行壓力試驗。試驗結(jié)果表明,所研制的密封件能承受158Mpa的液壓和105Mpa的氣壓。 本研究所研制的超高壓密封產(chǎn)品已在相關(guān)高壓氣田進行了現(xiàn)場試用,且試用效果得到了相關(guān)油田的高度評價。
[Abstract]:As the wellhead throttle valve throttling device, is one of the essential equipment of natural gas in the mining process. A high pressure gas field, because of its natural gas condition, the oil companies have cooperation with well-known foreign companies, choose their products. But in the inlet throttle, the use of the process, but there are also many the problems, such as low reliability, long procurement cycle, the price of more expensive parts, domestic related fields to achieve localization of the throttle valve is getting louder. According to the needs of the market, at the same time in order to break the monopoly of foreign manufacturers, domestic manufacturers have developed super high voltage cage type throttle valve for the gas field the seals. As an essential part of the throttle valve on the parts, it is necessary to ensure the successful development of the domestic valve successful application.
This paper starts from the use of the seal conditions, analysis of the working condition of the seal for high pressure, high temperature, strong corrosion, and also contain static sealing and dynamic sealing two kinds of sealed form. Combined with the working conditions of seals, valve seals and practical research, chose the pan sealing seal as mentioned in this article the throttle valve, and in the pan three plug spring seal used in the spring, according to the characteristics and actual effect, elastic compensation chose Slantciol spring for the pan. In the design of sealing plug shape seal, according to seal groove size and initial deformation of pre fixed seal design, seal out of shape and size to simulate the sealing effect using the ABAQUS simulation software, and discuss the different pre deformation amount of the sealing effect, select the best pre deformation.
The pan matrix plug sealing usually PTFE composite, this paper analyzes the various advantages and modified method, combined with the operating conditions of the seal at the same time after repeated 1:1 tooling seal test, the seal design formula of pure PTFE +10% carbon fiber. In order to verify the development of seal gas sealing effect the design and manufacture, a sealing performance test all tooling, and select 105Mpa and 70Mpa pressure and outlet pressure pressure test simulation of the throttle valve. The experimental results show that the hydraulic pressure and 105Mpa seals can withstand 158Mpa developed.
The ultra-high pressure seals developed in this study have been tested in the related high pressure gas fields, and the trial results have been highly evaluated in the related fields.

【學(xué)位授予單位】：西南石油大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TE931;TB42

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本文編號：1516364