Internal resistance pipe butt welder
    1.
    发明授权
    Internal resistance pipe butt welder 失效
    内阻管对接焊机

    公开(公告)号:US4273985A

    公开(公告)日:1981-06-16

    申请号:US36166

    申请日:1979-05-04

    CPC分类号: B23K11/0935

    摘要: A welder arranged inside pipes to be welded comprises a housing with the longitudinal axis thereof matched with the axis of the pipes. On the housing are a welding transformer and two mechanisms clamping the pipes, each having a drive moving the mechanism along the axis of the housing, and each being electrically connected to the transformer. The housing has mounted thereon a pipe flashing and upsetting mechanism with its own hydraulic drive, kinematically coupled to one of the pipe clamping mechanisms, a hydraulic pump supplying fluid to the drives, and a mechanism driving the welder along the pipes' axis. The housing carries two bearing discs secured at opposite ends and three clips mounted on roller supports and movable along the housing's axis. Two clips are incorporated in the first and second clamping mechanisms, respectively, and the third is part of the flashing and upsetting mechanism. The clip incorporated in the first pipe clamping mechanism is interposed between the bearing disc and the clip of the second clamping mechanism and is coupled to the bearing disc by means of its hydraulic drive. Another kinematic coupling is between this clip and the bearing disc. The clip of the flashing and upsetting mechanism is close to the second bearing disc and coupled thereto by its own hydraulic drive. The clip of the second clamping mechanism is interposed between the clip of the first clamping mechanism and that of the flashing and upsetting mechanism and is coupled to the clip of the flashing and upsetting mechanism by its hydraulic drive; and an additional kinematic coupling is between the clip of the second clamping mechanism and said clip of the flashing and upsetting mechanism.

    摘要翻译: 布置在要焊接的管道内的焊工包括其纵轴与管的轴线匹配的壳体。 在壳体上是焊接变压器和夹紧管道的两个机构,每个机构具有沿着壳体的轴线移动机构的驱动器,并且每个机构电连接到变压器。 壳体上安装有管状闪光和镦锻机构,其具有其自身的液压驱动器,其运动地联接到管夹紧机构中的一个,向驱动器供应流体的液压泵以及沿着管轴驱动焊机的机构。 外壳带有固定在相对端的两个轴承盘,三个夹子安装在滚子支架上,并可沿壳体的轴线移动。 两个夹子分别结合在第一和第二夹紧机构中,第三个是闪光和镦锻机构的一部分。 结合在第一管夹紧机构中的夹子介于轴承盘和第二夹紧机构的夹子之间,并且通过其液压驱动器联接到轴承盘。 另一种运动耦合在该夹子和轴承盘之间。 闪光和镦锻机构的夹子靠近第二轴承盘并通过其自身的液压驱动器与其连接。 第二夹持机构的夹子插入在第一夹紧机构的夹子和闪光和镦锻机构的夹子之间,并且通过其液压驱动器联接到闪光和镦锻机构的夹子; 并且另外的运动耦合在第二夹紧机构的夹子和闪光和镦锻机构的所述夹子之间。

    Apparatus for flash welding of pipes
    5.
    发明授权
    Apparatus for flash welding of pipes 失效
    管道闪光焊接设备

    公开(公告)号:US4490599A

    公开(公告)日:1984-12-25

    申请号:US295568

    申请日:1981-08-24

    CPC分类号: B23K11/0935

    摘要: An internal apparatus for flash welding pipes together in end to end relationship both under factory conditions and in the field, for example in laying trunk pipelines, comprises an elongate supporting member carrying an axially movable clamping assembly with electrode jaws for clamping one pipe, an axially immovable clamping assembly with electrode jaws for clamping the other pipe, and a doughnut-type welding transformer. The welding transformer is disposed at the side of the axially immovable clamping assembly, which is distant from the joint. The axially immovable clamping assembly is mounted on the elongate supporting member in a manner to provide an annular clearance therebetween such that there are extending therethrough two coaxial contact tubes, which are electrically insulated from one another and connect the welding transformer with the electrode jaws, whereby in operation a welding circuit is established.

    摘要翻译: 用于在工厂条件和现场的端到端关系中将管子一起闪光焊接在一起的内部装置,例如在铺设干线管道中包括一个细长的支撑构件,该支撑构件承载具有用于夹紧一个管子的电极爪的可轴向移动的夹紧组件, 不可移动的夹紧组件,带有用于夹紧另一根管子的电极爪和一个环形焊接变压器。 焊接变压器设置在远离接头的轴向不可移动的夹紧组件的侧面。 轴向不可移动的夹紧组件以在其间提供环形间隙的方式安装在细长支撑构件上,使得其中延伸穿过两个彼此电绝缘并且将焊接变压器与电极钳口连接的两个同轴接触管,由此 在操作中建立了焊接电路。

    Pipe resistance butt welding apparatus
    6.
    发明授权
    Pipe resistance butt welding apparatus 失效
    管电阻对焊机

    公开(公告)号:US4436974A

    公开(公告)日:1984-03-13

    申请号:US294416

    申请日:1981-08-19

    CPC分类号: B23K11/0935 B23C3/124

    摘要: A pipe resistance butt welding apparatus comprises a body with an elongatedarrying member and two internal expanding clamps including current-feeding shoes. One of the clamps is rigidly attached to the body, whereas the other is movably mounted on the elongated carrying member and connected with a drive intended to communicate reciprocating motion to the other clamp. A trimming mechanism for removing flash is mounted on at least one of the internal expanding clamps. The body of the apparatus mounts centering supporting rollers and driving wheels, the former and the latter being secured thereto by means of spring-loaded levers. The driving wheels are connected with a rotation drive intended to rotate the wheels. The body carries a powder cylinder and spring-loaded three-arm rockers, the latter being turnably mounted. The first arm of each of said three-arm rockers carries a driving wheel, the second arm carries an additional supporting roller, and the third arm is connected with a rod of the power cylinder.

    摘要翻译: 管电阻对接焊设备包括具有细长承载构件的主体和包括馈电鞋的两个内部扩展夹具。 夹具中的一个刚性地附接到主体,而另一个夹具可移动地安装在细长承载构件上并且与用于将往复运动传递到另一个夹具的驱动器连接。 用于去除闪光的修整机构安装在至少一个内部扩展夹具上。 装置的主体安装定心支撑辊和驱动轮,前者和后者通过弹簧加载杆固定到其上。 驱动轮与用于旋转车轮的旋转驱动器连接。 身体带有一个粉末圆筒和弹簧加载的三臂摇臂,后者可转动地安装。 所述三臂摇臂中的每一个的第一臂承载驱动轮,第二臂承载附加的支撑辊,并且第三臂与动力缸的杆连接。

    Pipe resistance butt welding apparatus
    8.
    发明授权
    Pipe resistance butt welding apparatus 失效
    管电阻对焊机

    公开(公告)号:US4323752A

    公开(公告)日:1982-04-06

    申请号:US136698

    申请日:1980-04-02

    CPC分类号: B23K11/0935

    摘要: A pipe resistance butt welding apparatus disposable within the pipes to be welded comprises a fixed expanding clamp and a movable expanding clamp, provided with clamping elements and actuating cylinders and intended to fix the pipes to be welded with respect to the apparatus. A cylinder to effect an axial movement of the movable expanding clamp is installed at the end at which this expanding clamp is located; the axial movement provides for drawing together the ends of the pipes to be welded in the course of fusion and upsetting. The cylinder for the axial movement of the movable expanding clamp is coupled with the actuating cylinder of the same clamp and with the clamping elements. The devices making up the apparatus and the cylinders are coaxially installed within a body wherefrom the clamp elements extend outwardly to engage the inner surface of the pipes being welded. Modifications of the apparatus for weld-joining of medium and large diameter pipes respectively are also described.

    摘要翻译: 在待焊接的管道中一次性使用的管电阻对接焊接设备包括固定膨胀夹具和可移动膨胀夹具,其设置有夹紧元件和致动缸,并且旨在相对于设备固定待焊接的管。 用于实现可移动膨胀夹具的轴向运动的缸体安装在该膨胀夹具所在的端部处; 轴向移动可以在融合和镦锻的过程中将被焊接管的端部拉制在一起。 用于可移动膨胀夹具的轴向运动的缸体与相同夹具的致动缸和夹紧元件联接。 构成设备和气缸的装置同轴地安装在主体内,夹紧元件从外部向外延伸以接合被焊接管的内表面。 还描述了分别用于中等和大直径管道焊接装置的修改。

    Doughnut-type transformer for resistance butt welding
    10.
    发明授权
    Doughnut-type transformer for resistance butt welding 失效
    环形变压器用于电阻对接焊接

    公开(公告)号:US4297665A

    公开(公告)日:1981-10-27

    申请号:US149734

    申请日:1980-05-14

    CPC分类号: H01F27/16 H01F30/16

    摘要: The doughnut-type transformer comprises a spirally wound core consisting of several individual annular cores each tightened by rod members. The annular core is surrounded by transformer sections comprising the primary and the secondary windings. Each winding is composed of turns shaped as sectors in the plane of the transformer cross-section, a cooled turn of the secondary winding being placed between the turns of the primary winding in each transformer section. The turns of the windings surround the annular core so that the geometric center of each winding is displaced from the geometric center of the annular core in the cross-sectional plane thereof and the geometric center of the annular core is farther from the transformer axis. Each turn of the secondary winding is provided with a passage for cooling water to circulate therethrough, which water being supplied and discharged through one and the same contact ring and is first cooling one half of the whole number of the transformer sections and then the other half.

    摘要翻译: 环形变压器包括由多个单独的环形芯组成的螺旋卷绕的芯,每个环形芯由杆构件紧固。 环形芯由包括初级和次级绕组的变压器部分围绕。 每个绕组由成形为变压器横截面的平面中的扇形的匝组成,次级绕组的冷却转弯位于每个变压器部分的初级绕组的匝之间。 绕组的匝围绕环形芯,使得每个绕组的几何中心在其横截面中从环形芯的几何中心位移,并且环形芯的几何中心离变压器轴线更远。 次级绕组的每一回转都设置有用于冷却水循环的通道,该通道由同一个接触环供给和排出,并且首先将整个变压器部分的一半冷却,然后另一半 。