徑向密封性 的英文怎麼說
中文拼音 [jìngxiàngmìfēngxìng]
徑向密封性
英文
radial impermeability-
To enhance the reliability of bearing seal of cone bit, this paper plans to adopt face - radial combination sealing structures ; that is to say, end - face and radial seal are arranged in one bit simultaneously. the nonlinear finite element method is applied to analyze and optimize the design of sealing structures
為了提高牙輪鉆頭軸承密封的可靠性,本文設計採用端面-徑向組合密封結構,即在一隻鉆頭中同時布置端面和徑向密封,採用非線性有限元方法對密封結構進行分析和優化。To ensure the charging pump working reliably, the following measures should be adopted : ( 1 ) adopting modified circular casing to reduce the radial force of the impeller and decrease the seal clearance ; ( 2 ) using radical ribs on impeller and helical sealing on shaft to realize minor pressure differential ; ( 3 ) using back pressure stuffing box to ensure sealing under small packing force ; ( 4 ) adopting self - lubricant flexible graphite stuffing for absorption of solids entering in the graphite in case of leaking
為確保灌注泵可靠工作,提出改進措施: ( 1 )採用改型環形泵體降低葉輪的徑向力,減小軸封間隙,抑制泄漏; ( 2 )採用背葉片降低葉片根部壓頭,獲得微壓,使軸封兩端承受較小壓差; ( 3 )採用螺旋密封降低軸封兩端壓差,在保持微壓的同時避免出現負壓,密封效果更好; ( 4 )採用反壓式填料密封結構,在很小的壓緊力下,即可保證密封; ( 5 )採用具有潤滑功效的柔性石墨填料,即使發生軸封泄漏,進入石墨內部的固相顆粒也將隨著石墨的消耗而被鉆井液吸收。The paper deduced the seal torque of the tri - eccentric butterfly valve and gave it a qualitative analysis. the results indicated : for the tri - eccentric butterfly valve with the same caliber, theseal torque would decrease with the butterfly disc thickness increasing ; the seal torque would increase with the radial eccentricity increasing ; however, the axis eccentricity effected on the seal torque minutely ; the seal torque would increase with the half cone angle increasing appreciably of the cone which the butterfly disc belonged to
本文還對三偏心蝶閥的密封力矩作了推導並進行了定性的分析,結果表明,對于同一口徑的三偏心蝶閥,密封力矩與蝶板的厚度近似成反比;與徑向偏心距近似成正比,變化也很明顯;而軸向偏心距對密封力矩的影響不是很大;密封力矩隨著蝶板所在的圓錐半錐角的增大而有所增加。Thermoplastics piping systems. end - load bearing joints between small diameter pressure pipes and fittings. test method for leaktightness under internal water pressure, including end thrust
塑料管道系統.小直徑壓力管與配件間的端負荷軸承連接.包含軸向推力的內部水壓下密封性試驗方法分享友人