本文選題：軸流泵 + 原油輸送�。� 參考：《大連理工大學(xué)》2011年碩士論文

【摘要】：新型多缸圓周分布斜盤式柱塞泵在遼河油田試用原油管道集輸。在遼河油田曙光采油廠現(xiàn)場(chǎng)測(cè)試表明,柱塞泵由注水改為輸送原油后,由于原油動(dòng)力粘度大,泵液力部進(jìn)閥門處水力損失大大增加；在柱塞吸油行程的時(shí)間內(nèi),原油無(wú)法在大氣壓力的作用下順利充滿柱塞液缸。柱塞泵排量降低,無(wú)法達(dá)到額定流量值,振動(dòng)噪聲增加。根據(jù)能量守恒原理,柱塞泵排量下降可以通過(guò)提高入口前原油位能的辦法來(lái)解決,為此設(shè)計(jì)一種原油輸送軸流泵加裝在柱塞泵入口前來(lái)達(dá)到提高原油能量的目的,保證柱塞泵輸出額定排量。 傳統(tǒng)軸流泵設(shè)計(jì)方法輪轂和輪緣葉片安放角差值大,葉片扭曲嚴(yán)重；等軸面速度和出口環(huán)量相等的設(shè)計(jì)實(shí)際效果并不理想。軸流泵采用流線法設(shè)計(jì)水力模型,沖角的選擇方式從輪轂到輪緣逐漸增加,取值范圍為0°～3°。原油比水動(dòng)力粘度大,軸流泵輸送水和原油介質(zhì)時(shí)的特性曲線有差異；利用FLUENT數(shù)值模擬,對(duì)比分析兩種介質(zhì)時(shí)的特性曲線,通過(guò)調(diào)整葉片輪轂翼型弦長(zhǎng)繞旋轉(zhuǎn)中心旋轉(zhuǎn)角確定原油輸送軸流泵的樣機(jī)加工參數(shù)。在實(shí)驗(yàn)室進(jìn)行加裝軸流泵和未加裝軸流泵的兩組柱塞泵原油流動(dòng)的性能試驗(yàn),對(duì)比分析柱塞泵性能的改善效果。 數(shù)值模擬結(jié)果表明兩種介質(zhì)特性曲線是幾何相似的,而原油流動(dòng)時(shí)揚(yáng)程有所下降且粘性力作用消耗掉50%的水力效率,而相似曲線流量區(qū)間同輸送水時(shí)相比更寬,適應(yīng)性更好,工況可調(diào)節(jié)性更好。在柱塞泵可調(diào)節(jié)流量范圍內(nèi)對(duì)比0～-4°輪轂翼型弦長(zhǎng)繞旋轉(zhuǎn)中心旋轉(zhuǎn)角時(shí)發(fā)現(xiàn),-4°旋轉(zhuǎn)角時(shí)可以保證所需揚(yáng)程且水力效率高更為節(jié)能,將其作為樣機(jī)加工參數(shù)。實(shí)驗(yàn)室試驗(yàn)數(shù)據(jù)表明柱塞泵排口壓力從1.0MPa逐漸升高至額定壓力2.5MPa時(shí),安裝軸流泵后,柱塞泵的排量明顯提高,額定壓力時(shí)泵效率高于85%。遼河油田現(xiàn)場(chǎng)測(cè)試表明加裝軸流泵的柱塞泵在額定壓力時(shí)流量和效率達(dá)到額定值,柱塞泵效率較未安裝軸流泵時(shí)提高31.6%,振動(dòng)噪聲符合限值要求。 柱塞泵入口端通過(guò)加裝軸流泵增壓,對(duì)改善原油輸送柱塞泵流量下降、泵效率下降及振動(dòng)噪聲增大的狀況具有實(shí)際的借鑒意義。
[Abstract]:A new multi cylinder circumferential distribution of swashplate axial piston pump in the trial of crude oil pipeline in Liaohe oilfield gathering. That in the field of Shuguang oil production plant of Liaohe Oilfield by water injection test, plunger pump to transport crude oil, because oil dynamic viscosity, pump fluid into the valve of the hydraulic loss is greatly increased; the plunger suction stroke time, crude oil not under the action of atmospheric pressure smooth full plunger hydraulic cylinder. Piston pump displacement is reduced, unable to reach the rated flow value, vibration and noise. According to the principle of conservation of energy, the plunger pump displacement can be solved by improving the entrance decline before the original level can approach for the design of a crude oil conveying shaft installed in the plunger pump to reach the entrance to improve the energy of the oil pump, ensure the piston pump rated output displacement.
The traditional design method of axial flow pump blade hub and the rim angle difference, leaf distortion; actual effect design of axis plane velocity and outlet ring is equal to the quantity is not ideal. The streamline method of axial flow pump hydraulic model design, selection of the incidence angle from hub to tip gradually increased, the range of 0 DEG 3 degrees. Crude oil than water dynamic viscosity, the characteristic curve of the axial flow pump conveying water and oil medium are different; using the FLUENT numerical simulation, comparative analysis of two kinds of medium characteristic curve by adjusting the blade hub around the center of rotation of the length of the chord angle to determine the processing parameters of the prototype oil conveying axial flow pump performance test. Two groups of crude oil flow piston pump installation without axial flow pump and axial flow pump in the laboratory, comparative analysis of piston pump performance improvement.
Numerical simulation results show that the two kinds of medium characteristic curve is geometrically similar, while crude oil flow has decreased and the efficiency of hydraulic lift and viscous force consume 50%, while a similar curve flow interval compared with the transport of water is more wide, better adaptability, better conditions can be adjusted. The plunger pump can adjust the flow within the scope of comparison found 0 to -4 degrees around the center of rotation of the hub airfoil chord angle, rotation angle of -4 degrees can guarantee the required lift and hydraulic efficiency such as the more high, prototype machining parameters. The experimental data table of the plunger pump outlet pressure from the 1.0MPa gradually increased to the rated pressure of 2.5MPa, after the installation of axial flow pump the displacement of the piston pump, improve the pump efficiency, the rated pressure is higher than 85%. in Liaohe oil field tests show that the piston pump with axial flow pump flow at rated pressure reaches the rated value and efficiency, pump efficiency When the axial flow pump is not installed, it is increased by 31.6%, and the vibration noise is in accordance with the limit requirement.
The inlet port of the plunger pump is booster by adding axial pump, which has a practical reference for improving the flow rate of the crude oil delivery piston pump, lowering the pump efficiency and increasing the vibration and noise.

【學(xué)位授予單位】：大連理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2011
【分類號(hào)】：TH312

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本文編號(hào)：1737353