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公开(公告)号:US20160153440A1
公开(公告)日:2016-06-02
申请号:US14904412
申请日:2014-07-11
Applicant: WESTPORT POWER INC.
Inventor: Ziyuan REN , Raymundo A. SAENZ , Robbi L. MCDONALD , Ankur H. VAYEDA , Gregory C. HARPER , Kenneth W. KRATSCHMAR , Michael EBBEHOJ
CPC classification number: F04B39/121 , F04B15/08 , F04B37/08 , F04B39/12 , F04B39/123 , F04C15/06 , F04C29/12 , F04C2240/30 , F04C2240/806 , F04C2250/10 , F04C2250/102 , Y10S417/901
Abstract: A flange (50) for a pump (10) comprises a first face (65); a second faces (85); a passageway (110) for cryogenic fluid flow extending from the first face (65) to the second face (85), and the passageway (110) for a pipe (40) and comprising a first portion (120) of a first diameter and a second portion (130) of a second diameter greater than the first diameter, wherein when the pipe (40) has an outer diameter that is smaller than the second diameter, a gap (140) is formed between the pipe (40) and the passageway (110) where the pipe (40) passes through the second portion (130); and a first annular groove (155) in one of the first face (65) and the second face (85) and extending around the passageway (111), wherein the first annular groove (155) in cooperation with the passageway (111) forms a bellows. The gap (140) and bellows increase the thermal resistance between the passageway (111) and the flange (50), and the bellows allows for flexure during thermal contractions of the flange reducing thermal stress on welded fluid seals.
Abstract translation: 一种用于泵(10)的凸缘(50)包括第一面(65); 第二面(85); 用于从第一面(65)延伸到第二面(85)的低温流体流的通道(110)和用于管道(40)的通道(110),并且包括第一直径的第一部分(120)和 第二直径大于第一直径的第二部分(130),其中当管(40)具有小于第二直径的外径时,在管(40)和管(40)之间形成间隙 通道(110),其中管道(40)穿过第二部分(130); 以及在所述第一面(65)和所述第二面(85)之一中并且围绕所述通道(111)延伸的第一环形槽(155),其中与所述通道(111)配合的所述第一环形槽(155)形成 一个波纹管。 间隙(140)和波纹管增加了通道(111)和凸缘(50)之间的热阻,并且波纹管允许在凸缘的热收缩期间弯曲,从而减少焊接流体密封件上的热应力。