The utility model discloses a tail fixed connecting pipe, one end opening of the pipe body is larger than the diameter of the main form, with a conical nozzle expanding type connection, the other end of the tube body is smaller than the diameter of the main pipe, and formed integrally connected shape tapered tube; the tube body in the same a longitudinal section of line segment reentrant cone nozzle cone tube wall is formed in the longitudinal section of the straight line segment relative to the inner side wall tube body formed in the longitudinal section of the inclined tube and are located in the body wall formed in the longitudinal section of the conical nozzle, expanding type cone tube straight wall formed in the longitudinal section of the straight line segment relative to the lateral pipe body wall formed in the longitudinal section of the inclined tube and are located in the body wall formed in the longitudinal section of the pipe body in full; The walls of the tubes are coated with refractory coatings. The utility model does not need welding, only the top pressure is applied, so that a pipe body is sheathed and fixed by a conical pipe mouth, so that the pipe body can be connected with each other in series.
【技术实现步骤摘要】
本技术属于管材结构的改进,特别是可首尾套接固定的连接管。
技术介绍
管材为用于做管件的材料,不同的管件要用不同的管材,管材的好坏直接决定了管件的质量,建筑工程、电厂、化工厂等多用此类管材,诸如用于高压锅炉的管材、输送流体用无缝钢管、低压锅炉用无缝钢管、石油裂化用无缝钢管以及流体输送用不锈钢无缝钢管, 常见材质有合金碳钢、不锈钢、钢管、纤维管、复合管、镀锌管等。管材冲压是指管材的第二次加工,属于管材深加工技术范畴。它是从传统的冲压工艺发展起来的一种新的加工技术。它在航空航天、汽车、摩托车、机械、化工等工业部门得到广泛应用。同时也为管材在工程上的广泛应用展示出诱人的前景。根据管材零件的技术条件及不同使用要求,应选用相应的冲压方法。在实际生产中,管材的冲压加工方法,主要有切断、剖口、弯曲、翻卷成形等。但目前现有的管材冲压装置还未出现对管材两端管口进行常温冷冲压塑形变管径的装置,而传统大多对管材两端管口进行塑形变径加工的装置其结构复杂,通常需要事先高温加热管材,利用热塑性变形冲压方法对管材进行缩口或扩口, 耗能严重,成本高昂,购置该装置的数量受到限制,难于普及。除此之 ...
【技术保护点】
1.一种可首尾套接固定的连接管,包括管体(3),其特征是:管体(3)的一端管口大于其主体管径,形成与其一体连接的扩口型锥形管口(1),管体(3)的另一端管口小于其主体管径,形成与其一体连接的缩口型锥形管口(2),缩口型锥形管口(2)的外周管壁面其全部外周管壁面或部分外周管壁面(4)为锥面,扩口型锥形管口(1)的外周管壁面其全部外周管壁面为锥面;在该管体(3)的同一纵向截面中,缩口型锥形管口(2)锥壁在纵向截面所形成的直线段相对于管体(3)管壁在纵向截面所形成的直线段倾斜且均位于管体(3)管壁在纵向截面所形成的直线段的内侧,扩口型锥形管口(1)锥壁在纵向截面所形成的直线段相对 ...
【技术特征摘要】
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