The utility model relates to a heat exchange tube with an internal longitudinal fin structure, which can solve the problem of overall structural strength reduction caused by the reduction of the number of heat exchange tubes in the structural optimization of the traditional light tube heat exchanger. The utility model comprises a heat exchange tube main body, wherein the inner longitudinal wing of the cross heat exchange tube is arranged in the main tube of the heat exchange tube along the circumference of the inner wall; the outer ring wing is arranged in the outer part of the heat exchange tube main body along the axial direction of the heat exchange tube, when the fluid in the tube passes through the inner longitudinal wing, the heat exchange is carried out with the outer fluid through the tube wall and the outer ring wing of the heat exchange tube main body. The utility model is used for the cooling heat exchanger of the airborne electronic equipment, which can ensure the efficient heat exchange between the internal cooling working medium and the external cooling air. By introducing the inner longitudinal wing and outer ring wing, the heat exchange area of the contact surface between the inner and outer fluid and the pipe wall is increased, and the heat exchange of a single heat exchange pipe is increased. Under the condition that the structural strength is not reduced, the number of heat exchange pipes is reduced, the weight of the heat exchanger is reduced, the overall structure is simplified, and the airtight reliability is improved.
【技术实现步骤摘要】
一种具有内部纵翅结构的换热管
本技术涉及管路结构
,具体涉及一种具有内部纵翅结构的换热管。
技术介绍
在工程应用中,换热器是一种用来将热量从热流体传递到冷流体且满足一定工艺要求的的设备,一般可分为间壁式换热器、混合式换热器和蓄热式换热器。在间壁式换热器中,冷、热流体由壁面间隔开来而分别位于壁面两侧,其常见的套管式、管壳式和交叉流式换热器多采用换热管分隔冷热流体。对于光管型换热管,其内部无异型扰流结构,管程流阻小,且外部壁面对换热流体流向无选择性,可广泛应用顺流、逆流和交叉流型间壁换热器。但光管型换热管存在换热面积小的不足,在换热温差和换热量相同的条件下,对换热管的数量需求更高。在航空、航天等非地面应用场合,当换热器的体积、重量、结构强度和可靠性是主要限制因素时,光管型换热管的应用会受较大限制。换热管的一种有效换热强化方式为增大流体与壁面的接触面积,可通过增加翅片的方式实现,在光管的基础表面上引入扩展表面形成翅片以增大换热面从而提升换热效率。应用于交叉流换热器的换热管可采用外部环翅的结构方案,环翅通常由环套和焊接金属薄片的方式加工而成,可有效的增加换热管外表面积从而提升交叉流换热效率,但该型换热管的轴向结构强度和直翅(纵翅)型换热管相比较低。在航空机载条件下,用于舱内电子设备冷却的换热器受舱段体积和工作环境限制,流经其换热管内部的冷却工质和外部冷空气的流动方式一般为交叉流,且换热管两端连接换热器壳体需同时兼顾轴向支撑作用,并满足机载条件下的力学环境要求。故采用外部环翅换热管并以最少用量满足换热要求,以实现 ...
【技术保护点】
1.一种具有内部纵翅结构的换热管,包括换热管主体(1),其特征在于:所述换热管主体(1)管内沿内壁周向布置横贯换热管的内部纵翅(4);/n所述换热管主体(1)外部沿换热管轴向布置外部环翅(2),管内流体经所述内部纵翅(4)时,通过所述换热管主体(1)的管壁和所述外部环翅(2)与外部流体进行换热。/n
【技术特征摘要】
1.一种具有内部纵翅结构的换热管,包括换热管主体(1),其特征在于:所述换热管主体(1)管内沿内壁周向布置横贯换热管的内部纵翅(4);
所述换热管主体(1)外部沿换热管轴向布置外部环翅(2),管内流体经所述内部纵翅(4)时,通过所述换热管主体(1)的管壁和所述外部环翅(2)与外部流体进行换热。
2.根据权利要求1所述的具有内部纵翅结构的换热管,其特征在于:所述换热管主体(1)的外部还设置预留焊接面(3),所述预留焊接面(3)设置在换热管主体(1)两端台阶外端面处。
3.根据权利要求2所述的具有内部纵翅结构的换热管,其特征在于:所述内部纵翅(4)的翅片在换热管主体(1)内部周向等距排列,高低交错布置。
...
【专利技术属性】
技术研发人员:绳春晨,罗高乔,张银,
申请(专利权)人:中国电子科技集团公司第十六研究所,
类型:新型
国别省市:安徽;34
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