The invention provides a free compensating tube heat exchanger, which solves the problems of the traditional tube heat exchanger that the heat exchanger's heat exchanger's heat exchanger's heat exchanger's heat exchanger's joint is not firmly bonded, which causes easy cracking and tube body to break, and that the heat exchanger's tube is difficult to be replaced and can not be mixed used. The technical scheme includes an outer tube, a heat exchanger tube, a head and a tube plate, and the outer tube has cooling water inlet and a cold water inlet. But for water outlet, the heads at both ends are respectively provided with medium inlet and medium outlet, and the heat exchange tube is inserted between the tube sheets at both ends of the outer cylinder. The technical points are as follows: the tube sheet is provided with multiple guide holes, the end of the heat exchange tube is inserted in the corresponding guide holes, and a sealing ring for sealing between the guide holes and the heat exchange tube is arranged in the guide holes. It avoids easy cracking at the interface of heat exchanger tubes and effectively prevents the tube from breaking. It has stable performance, long service life and high pressure resistance. It can replace heat exchanger tubes independently on site, and is convenient for maintenance. It can be mixed with heat exchanger tubes of various materials.
【技术实现步骤摘要】
自由补偿式列管热交换器
本专利技术涉及工业防腐热交换设备,特别是一种自由补偿式列管热交换器,适用于工业生产中对腐蚀性液体或汽体进行热交换。
技术介绍
目前我国在化工、制药、化肥、金属冷轧酸洗和电镀等行业的生产工艺中存在大量的化学反应工艺过程,形成放热反应或加热快速反应。热交换设备通常采用卧式的筒状外壳,内部设置热交换列管,外壳上设置有用于热交换的冷却水入口和冷却水出口,两端分别设置带有介质入口和出口的封头。设备在生产中会发生频繁的加热、冷却、膨胀和收缩现象,热交换列管伸缩范围在0至30mm之间,设备在这种复杂工作条件下运行会出现换热管会被拉断,接口开焊等问题,造成设备腐蚀液体的泄漏,严重影响正常生产。国内生产企业对腐蚀性液体或汽体的热交换基本上采用的是酚醛树脂改性石墨列管式换热器和聚丙烯改性石墨列管式换热器。如图4所示,酚醛树脂浸渍的石墨列管式换热器的制造工艺是金属筒体两端设有浸渍石墨固定头和游动头21,固定头上加工成若干销孔,热交换列管5两端用树脂胶泥贴结在固定头的销孔内,进行固化连接成一体。以换热面积为300m²的列管换热器为例,设备直径为1600mm,游动头∮1400mm,厚度500mm,重1400kg,体积和重量都很大,设备在受热、冷却时热交换列管拉不动游动头,游动头无法隨热交换列管游动,从而造成石墨换热管拉断,使设备严重泄漏,严重的造成昂贵的设备报废。还有一种热交换设备采用聚丙烯改性石墨列管式换热器,热交换列管通过管板固定在筒状外壳两端,制造工艺是用电烙铁将石墨管的两端熔接到管板上,这种连接方式在石墨管的热胀冷缩和腐蚀液体冲击震动中更容易开裂,造 ...
【技术保护点】
1.一种自由补偿式列管热交换器,它包括外筒和内部的热交换列管,在外筒两端固定设置有封头和管板,外筒带有冷却水入口和冷却水出口,两端的封头分别带有介质入口和介质出口,热交换列管插接在外筒两端的管板之间,其特征在于:所述管板设置有多个导向孔,热交换列管端部插入在对应的导向孔内,在导向孔内设置有用于导向孔与热交换列管之间密封的密封环。
【技术特征摘要】
1.一种自由补偿式列管热交换器,它包括外筒和内部的热交换列管,在外筒两端固定设置有封头和管板,外筒带有冷却水入口和冷却水出口,两端的封头分别带有介质入口和介质出口,热交换列管插接在外筒两端的管板之间,其特征在于:所述管板设置有多个导向孔,热交换列管端部插入在对应的导向孔内,在导向孔内设置有用于导向孔与热交换列管之间密封的密封环。2.根据权利要求1所述的自由补偿式列管热交换器,其特征在于:所述导向孔内设置有朝向外侧的止口,密封环利用外螺纹压套压接在导向孔止口。3.根据权利要求2所述的自由补偿式列管热交换器,其特征在于:所述压套的压套底端面向内倾斜。4.根据权利要求3所述的自由补偿式列管热交换器,其特征在于:所述压套底端面与压套轴向夹角为40度。5.据权利要求1至4任意一项所述的自由补偿式列管热交换器,其特征在于:所述热交换列管两端部的管板之间设置有...
【专利技术属性】
技术研发人员:孙浩,孙永伦,
申请(专利权)人:沈阳科发防腐设备技术有限公司,
类型:发明
国别省市:辽宁,21
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