本文選題：球塞泵 + 定子軌道�。� 參考：《南昌大學(xué)》2012年碩士論文

【摘要】：球塞泵以高精度陶瓷球為活塞,采用軸配流,其缸孔內(nèi)壁噴涂有一層耐磨工程塑料,利用其彈塑性和球塞的剛性建立起密封面,大大降低泄漏流量。但由于高速往復(fù)運動,球塞表面與缸孔表面有極大摩擦,會造成材料磨損等疲勞破壞。同時,球塞副在壓縮沖程中,由于偏心力的作用,球塞偏向缸孔一側(cè),對缸孔壁的側(cè)向壓力較大。缸孔變形嚴重,不利于其潤滑。 本課題主要從以下兩個方面展開研究：一方面,建立球塞泵的運動學(xué)模型,研究整個運動過程中球塞沿定子軌道的運動軌跡,在此基礎(chǔ)上研究球塞對定子軌道的接觸應(yīng)力變化規(guī)律。同時,以同心球塞副柱坐標(biāo)下的特性方程為基礎(chǔ),根據(jù)球塞副的實際偏心情況,求解偏心球塞副接觸的應(yīng)力和應(yīng)變分布特性,從理論上研究球塞副的接觸特性。 另一方面,對之前進行的球塞泵接觸應(yīng)力理論分析展開實驗研究以驗證理論分析的正確性。建立試驗臺,設(shè)計和加工工作壓力在5MPa左右的海軍黃銅質(zhì)的球塞泵以及球塞副摩擦磨損和壓差泄漏流量測試裝置,對其進行球塞泵球塞副壓差泄漏流量測試。 通過理論建模和數(shù)值仿真相結(jié)合的方法來研究球塞副的接觸與應(yīng)力應(yīng)變特性,為球塞副接觸應(yīng)力應(yīng)變特性的實驗研究提供本質(zhì)特征準(zhǔn)數(shù)；基于流體彈性力學(xué)方程建立描述球塞副的變形模型,并以測量球塞副特定工況條件下的泄漏流量來間接評判變形所形成的密封的可靠性。將上述所有研究結(jié)合起來,最終探明球塞泵的應(yīng)力應(yīng)變特性。
[Abstract]:The ball plug pump uses a high-precision ceramic ball as a piston. The inner wall of the cylinder is sprayed with a layer of wear-resistant engineering plastics, which uses its elastic plasticity and the rigidity of the ball plug to establish a dense cover, which greatly reduces the leakage flow. However, because of the high speed reciprocating movement, the surface of the ball plug has a great friction with the surface of the cylinder hole, and it will cause fatigue damage such as material wear and so on. In the compression stroke, the ball plug in the compression stroke, because of the effect of eccentric force, the ball slug to the side of the cylinder hole, the lateral pressure on the cylinder bore wall is larger. The cylinder hole is deformed seriously and is not conducive to its lubrication.
This subject is mainly studied in the following two aspects: on the one hand, the kinematic model of the ball plug pump is established, and the motion trajectory of the ball plug along the stator track during the whole movement is studied. On this basis, the change law of the contact stress of the ball plug on the stator track is studied. The actual eccentricity of the ball plug pair is solved to solve the stress and strain distribution characteristics of the eccentric plug pair contact, and the contact characteristics of the ball plug pair are theoretically studied.
On the other hand, the theoretical analysis of the contact stress of the ball plug pump has been carried out to verify the correctness of the theoretical analysis. The test rig, the naval brass ball plug pump with the design and processing pressure of about 5MPa and the test device for the friction and wear and differential leakage flow of the ball plug, and the differential pressure difference between the ball plug pump and the ball plug pump are set up. Leakage flow test.
Through the combination of theoretical modeling and numerical simulation, the contact and stress strain characteristics of the ball plug pair are studied, and the essential characteristics are provided for the experimental research on the stress and strain characteristics of the ball plug contact. Based on the fluid elastic equation, the deformation model describing the ball plug pair is established, and the leakage flow under the condition of the ball plug pair is measured. In order to indirectly evaluate the reliability of the seal formed by the deformation, the stress and strain characteristics of the ball pump are finally determined by combining all the above studies.
【學(xué)位授予單位】：南昌大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2012
【分類號】：TH38

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本文編號：2084179