【摘要】：為研究中溫高黏度介質(zhì)雙端面機(jī)械密封主密封的傳熱和變形規(guī)律以及沖洗液的壓力和溫度對其影響,從而為密封性能改進(jìn)和沖洗液的高效控制提供依據(jù).以乳液輸送設(shè)備雙端面機(jī)械密封(AR201)為研究對象,建立傳熱計(jì)算模型,采用有限元法分析主密封溫度場,研究了密封環(huán)溫度和變形量隨沖洗液壓力和溫度的變化規(guī)律.研究表明:密封環(huán)端面的最高溫處于動靜環(huán)接觸面靠近密封腔位置處,在沖洗液的作用下,動靜環(huán)內(nèi)徑側(cè)溫度明顯低于外徑側(cè),動靜環(huán)溫度自接觸面開始沿軸向至環(huán)外側(cè)逐漸降低;端面最高溫度和最大變形量隨沖洗液溫度和壓力的升高而增大,最大變形量的大小和隨沖洗液參數(shù)變化的波動幅度與密封材料有關(guān);合理選擇沖洗液壓力和溫度是有效改善主密封性能的措施,對于AR201機(jī)械密封,將沖洗液壓力控制在0.80~0.85 MPa和較低的溫度能減少端面磨損現(xiàn)象.
[Abstract]:In order to study the heat transfer and deformation of the main seal with medium temperature and high viscosity, and the influence of the pressure and temperature of the flushing fluid on the seal, this paper provides the basis for the improvement of sealing performance and the efficient control of the flushing fluid. A heat transfer calculation model was established for the double end mechanical seal (AR201) of emulsion conveying equipment. The temperature field of the main seal was analyzed by finite element method. The variation of the temperature and deformation of the seal ring with the flushing fluid pressure and temperature was studied. The results show that the maximum temperature of the end surface of the seal ring is near the position of the seal cavity, and the temperature of the inner diameter side of the ring is obviously lower than that of the outer diameter side under the action of the flushing fluid. The temperature of the static and static ring decreases gradually from the axial direction to the outer side of the ring. The maximum temperature and maximum deformation of the end face increase with the increase of the temperature and pressure of the flushing fluid, and the magnitude of the maximum deformation and the fluctuation range with the parameters of the flushing fluid are related to the sealing material. Reasonable selection of flushing fluid pressure and temperature is an effective measure to improve the performance of main seal. For AR201 mechanical seal, the pressure of flushing fluid can be controlled at 0.80 MPa and 0.85 MPa and lower temperature can reduce the wear phenomenon of the end face.
【作者單位】： 江蘇大學(xué)能源與動力工程學(xué)院;
【基金】：國家自然科學(xué)基金資助項(xiàng)目(51279067)
【分類號】：TH136

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本文編號：2304958