A connection device between the tube plate and the heat exchange tube on the vertical heat exchanger, which relates to a heat exchanger device, a connection device between the tube plate and the heat exchange tube on the vertical heat exchanger, which is characterized in that the device comprises a tube plate and a heat exchange tube, a heat transfer tube (1) and a tube plate (2), and then the heat exchange tube (1) and the tube plate (2). The groove is expanded, and two annular grooves are arranged in the tube plate hole, and the heat exchange tube 1 is inserted into the tube plate (2) hole. The joint of the upper end of the tube and the tube plate is welded by fillet welds. The device uses the strength welding of the upper end of the heat transfer tube and the tube plate hole and the strength expansion joint of two ring grooves on the tube plate hole, which has high connection strength, strong anti axial pull ability, and the outer surface of the heat transfer tube is closely fitted to the tube plate hole, especially suitable for the large temperature difference of the cold and hot medium, resulting in a large axial temperature difference stress condition.
【技术实现步骤摘要】
一种立式换热器上管板与换热管的连接装置
本技术涉及一种换热器装置,特别是涉及一种立式换热器上管板与换热管的连接装置。
技术介绍
换热器在化工、石油化工、炼油、制药、轻工、食品和能源等行业中应用广泛,主要用来实现冷热介质的热量交换,其数量占总设备的60-70%,是过程工业的关键设备。然而在实际生产中,换热器失效却屡见不鲜,其主要形式之一就是换热管和管板在轴向变形不协调从而引起换热管从管板孔中拉脱,因此换热管与管板的连接结构最为关键。常见的管板与换热管的连接结构有四种:焊接、胀接、焊胀并用和爆炸胀接成型等四种方法。基于立式换热器上管板在停车时不能积存管程液体的特点,常采用换热管上端部缩(凹)进管板孔3~5mm焊接结构,但这种型式由于结构的原因,只能采用一圈角焊缝焊接,施焊困难,焊接质量不易保证,抗拉脱性能差,受较大轴向力时易失效。
技术实现思路
本技术的目的在于提供一种立式换热器上管板与换热管的连接装置,该装置采用换热管上端与管板孔强度焊接和在管板孔上开设两个环形槽的强度胀接并用结构,其连接强度高,抗轴向拉脱能力强,换热管外表面与管板孔贴合严密,尤其适用于冷热介质温差较大,产生较大轴向温差应力情况。本技术的目的是通过以下技术方案实现的:一种立式换热器上管板与换热管的连接装置,所述装置包括管板与换热管,换热管与管板焊接,然后换热管再与管板进行开槽胀接;管板孔中开两个环形沟槽;换热管1插入管板孔中。所述的一种立式换热器上管板与换热管的连接装置,所述换热管上管端一圈与管板连接处为角焊缝焊接。本技术的优点与效果是:1.本技术采用换热管上端与管板孔强度焊接和在管板孔上开设两 ...
【技术保护点】
1.一种立式换热器上管板与换热管的连接装置,其特征在于,所述装置包括管板与换热管,换热管(1)与管板(2)焊接,然后换热管(1)再与管板(2)进行开槽胀接;管板孔中开两个环形沟槽;换热管(1)插入管板(2)孔中。
【技术特征摘要】
1.一种立式换热器上管板与换热管的连接装置,其特征在于,所述装置包括管板与换热管,换热管(1)与管板(2)焊接,然后换热管(1)再与管板(2)进行开槽胀接;管板孔中开...
【专利技术属性】
技术研发人员:王麒宇,闫绍峰,张启东,
申请(专利权)人:辽宁工业大学,
类型:新型
国别省市:辽宁,21
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