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WO2025086589A1 - 一种组合结构螺旋焊接钢管的连续生产设备及制造方法 - Google Patents

一种组合结构螺旋焊接钢管的连续生产设备及制造方法 Download PDF

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Publication number
WO2025086589A1
WO2025086589A1 PCT/CN2024/090717 CN2024090717W WO2025086589A1 WO 2025086589 A1 WO2025086589 A1 WO 2025086589A1 CN 2024090717 W CN2024090717 W CN 2024090717W WO 2025086589 A1 WO2025086589 A1 WO 2025086589A1
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WIPO (PCT)
Prior art keywords
steel strip
composite
spiral
steel
roller
Prior art date
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Pending
Application number
PCT/CN2024/090717
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English (en)
French (fr)
Inventor
战福军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing Dade Steel Pipe Co Ltd
Original Assignee
Nanjing Dade Steel Pipe Co Ltd
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Publication date
Priority claimed from CN202311398383.8A external-priority patent/CN117206359A/zh
Priority claimed from CN202410407518.0A external-priority patent/CN118060804A/zh
Application filed by Nanjing Dade Steel Pipe Co Ltd filed Critical Nanjing Dade Steel Pipe Co Ltd
Publication of WO2025086589A1 publication Critical patent/WO2025086589A1/zh
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/16—Rigid pipes wound from sheets or strips, with or without reinforcement
    • F16L9/165—Rigid pipes wound from sheets or strips, with or without reinforcement of metal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16S—CONSTRUCTIONAL ELEMENTS IN GENERAL; STRUCTURES BUILT-UP FROM SUCH ELEMENTS, IN GENERAL
    • F16S3/00—Elongated members, e.g. profiled members; Assemblies thereof; Gratings or grilles

Definitions

  • the invention relates to the technical field of steel pipe welding, and in particular to continuous production equipment and a manufacturing method for a combined structure spiral welded steel pipe.
  • This application designs a composite structural steel pipe, reference application number: 202211023603.4, name: A composite structural wall large diameter spiral welded steel pipe and its manufacturing method prior application, the steel pipe is made of continuous composite steel strips after spiral rolling and welding, wherein the composite steel strip is made of two upper and lower flat steel strips with a vertical steel strip (reinforcement rib) welded in the middle, as shown in Figures 1 and 2.
  • the vertical steel strip and the lower steel strip (outer steel strip) will produce large plastic deformation, and there will be the following problems:
  • the lower steel belt will have a large stretch and plastic deformation, and the weld between the lower steel belt and the vertical steel belt will be stretched and damaged;
  • connection between the lower steel belt and the vertical steel belt will form a convex spiral pattern, and the surface of the corrugated tube is uneven, as shown in Figure 3;
  • the upper steel belt (inner steel belt) shrinks severely. When the upper steel belt is thin, it may buckle and wrinkle.
  • the first purpose of the present invention is to disclose a continuous production equipment for a combined structure spiral welded steel pipe; the second purpose is to disclose a method for manufacturing a combined structure spiral welded steel pipe using the above-mentioned continuous production equipment.
  • the continuous production equipment of the combined structure spiral welded steel pipe disclosed in the present invention is formed by continuous rolling and welding of composite steel strips, the composite steel strips are formed by welding the upper steel strip, the lower steel strip and the vertical steel strips therebetween which are arranged in parallel, the upper steel strip and the vertical steel strip are welded to first form a first composite steel strip,
  • the rolling equipment comprises a delivery mechanism, a spiral rolling mechanism, a guide roller and a welding mechanism, the spiral rolling mechanism comprises a leading roller, a pressing roller and a rolling roller behind the delivery mechanism, the first composite steel strip is delivered by the delivery mechanism, and the vertical steel strip is rolled outwardly by the spiral rolling mechanism to form a spiral seam between the upper steel strip of the first composite steel strip which has just passed the pressing roller position and the upper steel strip of the previous section which has become the pipe body by the welding mechanism, the lower steel strip is guided by the guide roller to fit with the vertical steel strip of the first composite steel strip which has passed the leading roller, and when the fitting point passes the pressing
  • the guide roller and the lower steel belt are arranged laterally below the spiral rolling mechanism, at a position after the first composite steel belt completes the full-circle spiral rolling.
  • the lower steel belt is led out through the guide roller and attached to the first composite steel belt after the full-circle rolling is completed, and the joint between the first composite steel belt and the lower steel belt is welded.
  • the guide roller and the lower steel belt are arranged above the tube body on which the first composite steel belt has completed spiral rolling.
  • the lower steel belt is led out through the guide roller and attached to the first composite steel belt that has completed rolling, and the joint between the first composite steel belt and the lower steel belt is welded.
  • the guide roller is composed of a plurality of rollers with adjustable angles, whose angles match the advancing direction of the first composite steel belt, the upper steel belt is close to the outer wall of the roller, the rollers are arranged at intervals, and the gaps between the rollers are used to pass and clamp the guide vertical steel belt.
  • the rolling roller is composed of a plurality of rollers with adjustable angles, the angle of which matches the forward direction of the first composite steel strip, the upper steel strip is close to the outer wall of the roller, the rollers are arranged at intervals, and the gaps at the intervals are used to pass and clamp the guide vertical steel strips and assist the vertical steel strips in rolling.
  • the continuous production equipment also includes a clamping and guiding device for stabilizing the vertical steel strip, one or more of which are arranged in the circumferential direction of the spiral roll of the first composite steel strip.
  • the clamping guide device includes a guide shaft, which is provided with a clamping guide wheel corresponding to the vertical steel strip on the first composite steel strip through a guide bearing sleeve, and a positioning spacer sleeve 705 is set between adjacent clamping guide wheels 703.
  • a clamping groove for the vertical steel strip to be embedded is provided on the outer periphery of the clamping guide wheel, and the angle of the clamping guide device matches the angle of the first composite steel strip.
  • the clamping and guiding device may also be composed of a plurality of rollers with adjustable angles, the angles of which match the advancing direction of the first composite steel strip.
  • the rollers are arranged at intervals, and the gaps at the intervals are used to clamp and guide the vertical steel strip.
  • the spiral weld of the upper steel strip is staggered with the spiral weld of the lower steel strip.
  • the width of the lower steel strip matches the size of the first composite steel strip.
  • a method for manufacturing a composite structure spiral welded steel pipe, using the above-mentioned continuous production equipment for composite structure spiral welded steel pipe comprises the following steps:
  • a spiral joint is welded between the rolled lower steel strip and the upper lower steel strip that has become the pipe body at the top of the pipe body.
  • the first composite steel strip in the composite steel strip is first rolled into a circle, and then welded to the lower steel strip.
  • the welding point with the lower steel strip is located behind the rounding roller. At this time, the first composite steel strip has completed the plastic deformation after rolling.
  • the lower steel belt (outer steel plate) does not need to be stretched any more and will not produce tensile deformation.
  • the production line does not need to provide additional tensile force, and its power demand is reduced;
  • the height of the vertical steel belt can be increased, the thickness can be reduced, and it is not easy to deform
  • the lower steel strip is a whole plate with the same width as the upper steel strip, rather than a stripped plate.
  • the weld between the vertical steel strip and the outer tube wall is in the inner cavity of the double-layer tube wall, which reduces the visible weld on the outer wall, ensuring the strength of the tube body and making the appearance of the tube body beautiful.
  • the vertical steel belt can realize clamping and guiding at multiple positions and is not easy to buckle
  • the guide rollers and the lower steel belt can be moved out from under the rolling mechanism, and the entire production line does not need to be dug or lifted high;
  • the space is easy to arrange fixtures and equipment with different functions
  • the propulsion force of the device acts on the first composite steel belt.
  • the cross-section of the first composite steel belt is a "T"-shaped structure. Its cross-sectional moment of inertia is large, and it can withstand a large pushing force when pushed and is not easy to buckle. At the same time, the pushing wheel can form full contact with the upper steel belt, so that the delivery clamping area is larger and the pushing force that can be applied is also larger.
  • FIG1 is a cross-sectional view of a composite steel strip welded as a whole
  • FIG2 is a schematic diagram of a spirally rolled composite steel strip welded as a whole
  • FIG3 is a schematic diagram of a convex spiral pattern structure
  • FIG4 is a structural diagram of a continuous production equipment form 1 of the present invention.
  • FIG5 is a schematic top view of the intersection of the guide roller and the first composite steel belt structure of the present invention.
  • FIG6 is a schematic diagram of the structure of the clamping guide device of the present invention.
  • FIG7 is a structural diagram of a second continuous production equipment according to the present invention.
  • FIG8 is a structural diagram of a third continuous production equipment according to the present invention.
  • FIG9 is a schematic diagram of the structure of a first composite steel strip according to the present invention.
  • FIG10 is a schematic diagram of the structure of the first composite steel belt, the lower steel belt and the guide rollers of the present invention.
  • FIG11 is a schematic diagram of welding points of the first composite steel strip and the lower steel strip of the present invention.
  • FIG12 is a processing schematic diagram of the present invention when the guide rollers and the lower steel belt are located laterally below the rolling forming mechanism;
  • FIG13 is a top view of a third continuous production device according to the present invention.
  • FIG. 14 is a top view schematic diagram of the winding roller and the rolling roller of the present invention.
  • the continuous production equipment of the combined structure spiral welded steel pipe as shown in Figure 4 the combined structure spiral welded steel pipe is formed by continuous rolling and welding of a composite steel strip, the composite steel strip is formed by welding an upper steel strip 1, a lower steel strip 2 and a vertical steel strip 3 arranged in parallel, and the upper steel strip 1 and the vertical steel strip 3 are welded to first form a first composite steel strip.
  • the upper steel strip 1 and the lower steel strip 2 have the same size, so that the width of the lower steel strip 2 matches the size of the first composite steel strip.
  • the rolling equipment includes a delivery mechanism 4, a spiral rolling mechanism 5, a guide roller 6 and a welding mechanism.
  • the spiral rolling mechanism 5 includes a leading roller 501, a pressing roller 502 and a rolling roller 503 behind the delivery mechanism 4.
  • the first composite steel strip is delivered by the delivery mechanism 4, and is rolled outward by the spiral rolling mechanism 5.
  • the welding mechanism welds the spiral joint between the upper steel strip 1 of the first composite steel strip that has just passed the pressing roller 502 and the upper steel strip of the previous section that has become the tube body.
  • the lower steel strip 2 is guided by the guide roller 6 to fit with the vertical steel strip 3 of the first composite steel strip that has passed the leading roller 501.
  • the pressing roller 502 that is, the plastic deformation point of the first composite steel strip
  • the joint between the first composite steel strip and the lower steel strip is welded by the welding mechanism, and the steel strip is continuously spirally rolled and welded.
  • the guide roller 501 is composed of a plurality of rollers arranged at intervals and having adjustable angles, the angle of which matches the advancing direction of the first composite steel strip, the upper steel strip is close to the outer wall of the roller, the rollers are arranged at intervals, and the gaps at the intervals are used to pass and clamp the guide vertical steel strip 3;
  • the rolling roller 503 is composed of a plurality of rollers with adjustable angles that can be spaced and arranged, and the angle thereof matches the forward direction of the first composite steel strip.
  • the upper steel strip is close to the outer wall of the roller, and the rollers are spaced apart, and the gaps at the intervals are used to pass and clamp the guiding vertical steel strip 3 and assist in rolling the vertical steel strip.
  • the continuous production equipment further includes a clamping guide device 7 for stabilizing the vertical steel strip 3, one or more of which are arranged in the circumferential direction of the spiral roll of the first composite steel strip.
  • the clamping guide device 7 includes a guide shaft 701, the guide shaft 701 is sleeved with a clamping guide wheel 703 corresponding to the vertical steel strip 3 on the first composite steel strip through a guide bearing 702, and a positioning spacer 705 is sleeved between adjacent clamping guide wheels 703.
  • the outer circumference of the clamping guide wheel 703 is provided with a The clamping groove 704 in which the vertical steel strip 3 is embedded.
  • the angle of the clamping guide device matches the angle of the first composite steel strip.
  • the clamping and guiding device may also be composed of a plurality of rollers with adjustable angles, the angles of which match the advancing direction of the first composite steel strip.
  • the rollers are arranged at intervals, and the gaps at the intervals are used to clamp and guide the vertical steel strip.
  • the lower steel strip is located directly below the composite steel strip that is being rolled, the space at this position is narrow, and it is necessary to set up clamping and guiding devices to prevent the vertical reinforcement from being deformed during processing, and to set up multiple welding guns to interfere with each other.
  • the lower steel coil is directly below the rolling and forming device, and a deep pit needs to be dug to place the steel coil, which also makes it difficult to hoist the steel coil into place.
  • the deformation and quality of the weld between the upper steel strip of the upper section of the composite steel strip and the vertical steel strip after rolling and spiral rolling cannot be immediately inspected.
  • the verticality of the spiral reinforcement and the inner and outer pipe walls may change, which may affect the overall performance of the structure.
  • Improvement 1 As shown in Figure 7, the guide roller 6 and the lower steel belt 2 are arranged above the tube body on which the first composite steel belt has completed spiral rolling.
  • the lower steel belt 2 is led out through the guide roller 6 and attached to the first composite steel belt that has completed rolling, and the joint between the first composite steel belt and the lower steel belt 2 is welded.
  • the guide roller 6 and the lower steel belt 2 are arranged laterally and downwardly of the spiral rolling mechanism 5, at a position after the first composite steel belt completes the full-circle spiral rolling.
  • the lower steel belt 2 is led out through the guide roller 6 and attached to the first composite steel belt after the full-circle rolling is completed, and the joint between the first composite steel belt and the lower steel belt 2 is welded.
  • the production method of the continuous production equipment of the combined structure spiral welded steel pipe based on the second improvement comprises the following steps:
  • the lower steel strip 2 is introduced by the guide roller 6 and is bonded to the first composite steel strip that has been rolled;

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Description

一种组合结构螺旋焊接钢管的连续生产设备及制造方法 技术领域
本发明涉及钢管焊接技术领域，尤其是涉及一种组合结构螺旋焊接钢管的连续生产设备及制造方法。
背景技术
本申请设计有一种组合结构钢管，参考申请号：202211023603.4，名称：一种复合结构壁大口径螺旋焊接钢管及其制造方法的在先申请，钢管由连续的复合钢带经螺旋卷圆及焊接后制成，其中的复合钢带是由上下两条平钢带中间焊接竖向的钢带(加强筋)制成，如图1和2所示。上述复合钢带在螺旋卷圆过程中，其中的竖向钢带及下钢带(外钢带)会产生很大的塑性变形，会存在以下问题：
1、由上钢带、下钢带及竖钢带构成的复合钢带直接焊接为一体后，截面性矩比单层钢板大很多，设备的动力要求过高；
2、复合钢带焊接为一体后，在卷圆时，竖向钢带受到外层钢带卷圆时的由于拉伸变形产生的径向压力太大，会产生失稳屈曲，特别是下钢带(外层钢带)在塑性变形拉伸时对竖向钢带的压力；
3、下钢带会产生很大的伸展，塑性变形大，下钢带与竖向钢带之间的焊缝会拉伸破坏；
4、下钢带与竖向钢带连接处在成管后会形成凸出的螺旋纹，成波纹状管表面不平整，如图3所示；
5、上钢带(内钢带)收缩严重，上钢带较薄时，可能会屈曲起皱。
发明内容
发明目的：为了克服背景技术的不足，本发明第一目的是公开一种组合结构螺旋焊接钢管的连续生产设备；第二目的是公开采用上述连续生产设备的组合结构螺旋焊接钢管制造方法。
技术方案：本发明所公开的组合结构螺旋焊接钢管的连续生产设备，所述组合结构螺旋焊接钢管由复合钢带连续卷圆焊接而成，所述复合钢带由平行设置的上钢带、下钢带及两者之间竖钢带焊接形成，所述上钢带和竖钢带焊接首先形成第一复合钢带，所述卷圆设备包括递送机构、螺旋卷圆机构、导引托辊及焊接机构，所述螺旋卷圆机构包括递送机构后方的先导辊、压圆辊及卷圆辊，所述第一复合钢带由递送机构递送，经螺旋卷圆机构竖钢带朝外卷圆成型，焊接机构焊接刚刚通过了压圆辊位置的第一复合钢带的上钢带与已经成为管体的上一节上钢带之间的螺旋接缝，所述下钢带经导引托辊导引与已经通过了先导辊的第一复合钢带的竖钢带贴合，当贴合点经过压圆辊后，即第一复合 钢带塑性变形点，通过焊接机构焊接第一复合钢带与下钢带之间的接缝，连续螺旋卷圆并焊接。
进一步的，所述导引托辊及下钢带设置于螺旋卷圆机构的侧向的下方、第一复合钢带完成整圆螺旋卷圆结束后的位置，所述下钢带经导引托辊引出并贴合在完成整圆卷圆后的第一复合钢带上，焊接第一复合钢带与下钢带之间的接缝。
进一步的，所述导引托辊及下钢带设置在第一复合钢带已完成螺旋卷圆的管体的上方，所述下钢带经导引托辊引出并贴合在完成卷圆的第一复合钢带上，并焊接第一复合钢带与下钢带之间的接缝。
进一步的，所述先导辊由多个可调节角度的滚轮组成，其角度与第一复合钢带前进方向相匹配，所述上钢带紧贴滚轮外壁，所述滚轮间隔设置，其间隔处的空隙用来通过及夹持导向竖钢带。
进一步的，所述卷圆辊由多个可调节角度的滚轮组成，其角度与第一复合钢带前进方向相匹配，所述上钢带紧贴滚轮外壁，所述滚轮间隔设置，其间隔处的缝隙用来通过及夹持导向竖钢带，并协助竖钢带卷圆。
进一步的，所述连续生产设备还包括用于稳定竖钢带的夹持导向装置，在第一复合钢带螺旋卷圆的周向布设一个或者多个。
进一步的，所述夹持导向装置包括导向轴，所述导向轴通过导向轴承套设有与第一复合钢带上的竖钢带对应的夹持导向轮，相邻夹持导向轮703之间套设定位隔套705，所述夹持导向轮外周开设供竖钢带嵌入的夹持槽，所述夹持导向装置的角度与第一复合钢带的角度相匹配。
所述夹持导向装置还可以由多个可调节角度的滚轮组成，其角度与第一复合钢带前进方向相匹配，所述滚轮间隔设置，其间隔处的缝隙用来夹持导向竖钢带。
进一步的，所述组合结构螺旋焊接钢管成型后，上钢带的螺旋焊缝与下钢带的螺旋焊缝错开。
进一步的，所述下钢带的宽度与第一复合钢带的尺寸相匹配。
一种组合结构螺旋焊接钢管的制造方法，采用上述组合结构螺旋焊接钢管的连续生产设备，包括以下步骤：
S1、由钢卷放出上钢带，并在上钢带上焊接竖钢带，形成第一复合钢带；
S2、将第一复合钢带翻转180°，使竖钢带朝下，再由递送机构递送至螺旋卷圆机构，以上钢带作为内圈，竖钢带向外卷圆；
S3、焊接刚刚通过压圆辊正下方位置，即第一复合钢带完成塑性变形的位置的第一复合钢带的上钢带与已经成为管体的上一节上钢带之间的螺旋接缝；
S4、将下钢带由导引托辊导入，并与第一复合钢带贴合；
S5、当下钢带与第一复合钢带贴合后，且贴合点通过了压圆辊后，用焊枪伸入上下钢带和竖钢带之间的空腔内，焊接腔内焊接缝；
S6、在管体顶部焊接完成卷圆的下钢带与已经成为管体的上一节下钢带之间的螺旋接缝。
有益效果：与现有技术相比，本发明的优点为：
1、复合钢带中第一复合钢带首先卷圆，然后再与下钢带焊接，与下钢带的焊接点位于压圆辊之后，此时的第一复合钢带已完成卷圆后的塑性变形；
2、下钢带(外层钢板)无需再拉伸，不会产生拉伸变形，另外，生产线不需要额外提供拉伸力，其动力需求减小；
3、成形后的管体表面不会有螺旋波纹状变形；
4、下钢带和竖钢带之间的焊道不会进行拉伸，不会产生损坏；
5、下钢带和竖钢带的焊缝在结构内部，结合处不会形成钢管的螺旋焊缝凸纹；
6、竖钢带的高度可以提高，厚度可以减薄，且不易变形；
7、下钢带是与上钢带等宽的整板，而不是分条的板，竖钢带与外管壁的焊缝在双层管壁的内腔，这样使外壁的可见焊缝减少，在管体强度保证的同时，管体外观美观；
8、竖钢带可实现多个位置的夹持及导向，不易屈曲；
9、可保证竖钢带与内外管壁垂直，有利于螺旋接缝的焊接质量；
10、导引托辊及下钢带可以移出卷圆机构正下方，整条生产线不用挖坑或高抬；
11、空间易于布置不同功能的工装夹具及设备；
12、易于对内钢带与竖钢带焊缝加工过程中的质量监控；
13、易于在上钢带、下钢带、竖钢带上设置剪力钉及其他构件；
14、本装置推进力作用于第一复合钢带，第一复合钢带截面为“T”型结构，其截面惯性矩大，推送时可以承受较大的推送力，不易屈曲；同时，推送轮可以与上钢带形成全接触，使得递送夹持面积较大，可施加的推送力也较大。
附图说明
图1为焊接为整体的复合钢带截面图；
图2为焊接为整体的复合钢带螺旋卷圆示意图；
图3为凸出的螺旋纹结构示意图；
图4为本发明连续生产设备形式一结构图；
图5为本发明先导辊与第一复合钢带结构交汇处俯视示意图；
图6为本发明夹持导向装置结构示意图；
图7为本发明连续生产设备形式二结构图；
图8为本发明连续生产设备形式三结构图；
图9为本发明第一复合钢带结构示意图；
图10为本发明第一复合钢带、下钢带及导引托辊结构示意图；
图11为本发明第一复合钢带和下钢带焊点示意图；
图12为本发明导引托辊及下钢带的位置位于卷圆成型机构侧向下方时的加工示意图；
图13为本发明连续生产设备形式三的俯视图；
图14为本发明卷圆辊及卷圆辊滚轮卷圆俯视示意图。
具体实施方式
下面结合附图和具体实施方式对本发明进一步详细描述。
如图4所示的组合结构螺旋焊接钢管的连续生产设备，所述组合结构螺旋焊接钢管由复合钢带连续卷圆焊接而成，所述复合钢带由平行设置的上钢带1、下钢带2及两者之间竖钢带3焊接形成，所述上钢带1和竖钢带3焊接首先形成第一复合钢带。
上钢带1和下钢带2尺寸一致，使得下钢带2的宽度与第一复合钢带的尺寸相匹配。
所述卷圆设备包括递送机构4、螺旋卷圆机构5、导引托辊6及焊接机构，所述螺旋卷圆机构5包括递送机构4后方的先导辊501、压圆辊502及卷圆辊503，所述第一复合钢带由递送机构4递送，经螺旋卷圆机构5竖钢带朝外卷圆成型，焊接机构焊接刚刚通过了压圆辊502位置的第一复合钢带的上钢带1与已经成为管体的上一节上钢带之间的螺旋接缝，所述下钢带2经导引托辊6导引与已经通过了先导辊501的第一复合钢带的竖钢带3贴合，当贴合点经过压圆辊502后，即第一复合钢带塑性变形点，通过焊接机构焊接第一复合钢带与下钢带之间的接缝，连续螺旋卷圆并焊接。
如图5所示，所述先导辊501由多个间隔设置并排列的可调节角度的滚轮组成，其角度与第一复合钢带前进方向相匹配，所述上钢带紧贴滚轮外壁，所述滚轮间隔设置，其间隔处的空隙用来通过及夹持导向竖钢带3；
所述卷圆辊503由多个可间隔设置并排列的调节角度的滚轮组成，其角度与第一复合钢带前进方向相匹配，所述上钢带紧贴滚轮外壁，所述滚轮间隔设置，其间隔处的缝隙用来通过及夹持导向竖钢带3，并协助竖钢带卷圆。
如图6所示，所述连续生产设备还包括用于稳定竖钢带3的夹持导向装置7，在第一复合钢带螺旋卷圆的周向布设一个或者多个。所述夹持导向装置7包括导向轴701，所述导向轴701通过导向轴承702套设有与第一复合钢带上的竖钢带3对应的夹持导向轮703，相邻夹持导向轮703之间套设定位隔套705，所述夹持导向轮703外周开设供 竖钢带3嵌入的夹持槽704。所述夹持导向装置的角度与第一复合钢带的角度相匹配。
所述夹持导向装置还可以由多个可调节角度的滚轮组成，其角度与第一复合钢带前进方向相匹配，所述滚轮间隔设置，其间隔处的缝隙用来夹持导向竖钢带。
考虑到下钢带位于正在压圆的复合钢带正下方，此位置空间狭窄，既要设置防止竖向加强筋加工变形的夹持及导向装置，又要设置多个焊枪，相互干扰，另外，下钢卷在压圆及成型装置正下方，需要挖深坑放置钢卷，钢卷的吊装就位也存在难度；另外复合钢带上节上钢带与竖钢带之间的焊缝在经过压圆及螺旋卷圆后的变形情况及质量的即时检控也无法实现；其次，螺旋卷圆后，螺旋加强筋与内外管壁的垂直度可能会改变，可能会影响结构的整体性能。
基于上述组合结构螺旋焊接钢管的连续生产设备提出进一步改进。
改进之一：如图7所示，所述导引托辊6及下钢带2设置在第一复合钢带已完成螺旋卷圆的管体的上方，所述下钢带2经导引托辊6引出并贴合在完成卷圆的第一复合钢带上，并焊接第一复合钢带与下钢带2之间的接缝。
改进之二：如图8及图13所示，所述导引托辊6及下钢带2设置于螺旋卷圆机构5的侧向下方、第一复合钢带完成整圆螺旋卷圆结束后的位置，所述下钢带2经导引托辊6引出并贴合在完成整圆卷圆后的第一复合钢带上，焊接第一复合钢带与下钢带2之间的接缝。
基于改进之二的组合结构螺旋焊接钢管的连续生产设备的生产方法，包括以下步骤：
S1、由钢卷放出上钢带1，并在上钢带1上焊接竖钢带3，形成第一复合钢带，如图9所示；
S2、将第一复合钢带翻转180°，使竖钢带3朝下，再由递送机构4递送至螺旋卷圆机构5，以上钢带1作为内圈，竖钢带3向外卷圆，如图8、12、13及14所示；
S3、焊接刚刚完成卷圆的上钢带1与已经成为管体的上一节上钢带之间的螺旋接缝，如图12所示；
S4、将下钢带2由导引托辊6导入，并与已经卷圆完成的第一复合钢带贴合；
S5、当下钢带2与第一复合钢带贴合后，且贴合点通过了压圆辊后，用焊枪伸入上下钢带和竖钢带之间的空腔内，焊接腔内焊接缝，如图12和13所示；
S6、焊接完成卷圆的下钢带2与已经成为管体的上一节下钢带2之间的螺旋接缝，如图13所示，所述组合结构螺旋焊接钢管成型后，上钢带1的螺旋焊缝与下钢带2的螺旋焊缝错开。

Claims (11)

  1. 一种组合结构螺旋焊接钢管的连续生产设备，所述组合结构螺旋焊接钢管由复合钢带连续卷圆焊接而成，其特征在于：所述复合钢带由平行设置的上钢带(1)、下钢带(2)及两者之间竖钢带(3)焊接形成，所述上钢带(1)和竖钢带(3)焊接首先形成第一复合钢带，卷圆设备包括递送机构(4)、螺旋卷圆机构(5)、导引托辊(6)及焊接机构，所述螺旋卷圆机构(5)包括递送机构(4)后方的先导辊(501)、压圆辊(502)及卷圆辊(503)，所述第一复合钢带由递送机构(4)递送，经螺旋卷圆机构(5)竖钢带朝外卷圆成型，焊接机构焊接刚刚通过了压圆辊(502)位置的第一复合钢带的上钢带(1)与已经成为管体的上一节上钢带之间的螺旋接缝，所述下钢带(2)经导引托辊(6)导引与已经通过了先导辊(501)的第一复合钢带的竖钢带(3)贴合，当贴合点经过压圆辊(502)后，即第一复合钢带塑性变形点，通过焊接机构焊接第一复合钢带与下钢带之间的接缝，连续螺旋卷圆并焊接。
  2. 根据权利要求1所述的组合结构螺旋焊接钢管的连续生产设备，其特征在于：所述导引托辊(6)及下钢带(2)设置于螺旋卷圆机构(5)的侧向的下方、第一复合钢带完成整圆螺旋卷圆结束后的位置，所述下钢带(2)经导引托辊(6)引出并贴合在完成整圆卷圆后的第一复合钢带上，焊接第一复合钢带与下钢带(2)之间的接缝。
  3. 根据权利要求1所述的组合结构螺旋焊接钢管的连续生产设备，其特征在于：所述导引托辊(6)及下钢带(2)设置在第一复合钢带已完成螺旋卷圆的管体的上方，所述下钢带(2)经导引托辊(6)引出并贴合在完成卷圆的第一复合钢带上，并焊接第一复合钢带与下钢带(2)之间的接缝。
  4. 根据权利要求1所述的组合结构螺旋焊接钢管的连续生产设备，其特征在于：所述先导辊(501)由多个可调节角度的滚轮组成，其角度与第一复合钢带前进方向相匹配，所述上钢带紧贴滚轮外壁，所述滚轮间隔设置，其间隔处的空隙用来通过及夹持导向竖钢带(3)。
  5. 根据权利要求1所述的组合结构螺旋焊接钢管的连续生产设备，其特征在于：所述卷圆辊(503)由多个可调节角度的滚轮组成，其角度与第一复合钢带前进方向相匹配，所述上钢带紧贴滚轮外壁，所述滚轮间隔设置，其间隔处的缝隙用来通过及夹持导向竖钢带(3)，并协助竖钢带卷圆。
  6. 根据权利要求1所述的组合结构螺旋焊接钢管的连续生产设备，其特征在于：所述连续生产设备还包括用于稳定竖钢带(3)的夹持导向装置(7)，在第一复合钢带螺旋卷圆的周向布设一个或者多个。
  7. 根据权利要求6所述的组合结构螺旋焊接钢管的连续生产设备，其特征在于：所述夹持导向装置(7)包括导向轴(701)，所述导向轴(701)通过导向轴承(702)套设有与第一复合钢带上的竖钢带(3)对应的夹持导向轮(703)，相邻夹持导向轮(703) 之间套设定位隔套(705)，所述夹持导向轮(703)外周开设供竖钢带(3)嵌入的夹持槽(704)，所述夹持导向装置的角度与第一复合钢带的角度相匹配。
  8. 根据权利要求6所述的组合结构螺旋焊接钢管的连续生产设备，其特征在于：所述夹持导向装置(7)由多个可调节角度的滚轮组成，其角度与第一复合钢带前进方向相匹配，所述滚轮间隔设置，其间隔处的缝隙用来夹持导向竖钢带(3)。
  9. 根据权利要求1所述的组合结构螺旋焊接钢管的连续生产设备，其特征在于：所述组合结构螺旋焊接钢管成型后，上钢带(1)的螺旋焊缝与下钢带(2)的螺旋焊缝错开。
  10. 根据权利要求1所述的组合结构螺旋焊接钢管的连续生产设备，其特征在于：所述下钢带(2)的宽度与第一复合钢带的尺寸相匹配。
  11. 一种组合结构螺旋焊接钢管的制造方法，其特征在于，采用权利要求1所述的组合结构螺旋焊接钢管的连续生产设备，包括以下步骤：
    S1、由钢卷放出上钢带(1)，并在上钢带(1)上焊接竖钢带(3)，形成第一复合钢带；
    S2、将第一复合钢带翻转180°，使竖钢带(3)朝下，再由递送机构(4)递送至螺旋卷圆机构(5)，以上钢带(1)作为内圈，竖钢带(3)向外卷圆；
    S3、焊接刚刚通过压圆辊(502)正下方位置的第一复合钢带的上钢带(1)与已经成为管体的上一节上钢带之间的螺旋接缝；
    S4、将下钢带(2)由导引托辊(6)导入，并与第一复合钢带贴合；
    S5、当下钢带(2)与第一复合钢带贴合后，且贴合点通过了压圆辊后，用焊枪伸入上下钢带和竖钢带之间的空腔内，焊接腔内焊接缝；
    S6、在管体顶部焊接完成卷圆的下钢带(2)与已经成为管体的上一节下钢带(2)之间的螺旋接缝。
PCT/CN2024/090717 2023-10-26 2024-04-30 一种组合结构螺旋焊接钢管的连续生产设备及制造方法 Pending WO2025086589A1 (zh)

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