WO2010118625A1 - 薄壁多层波纹管直边端口封口装置 - Google Patents

薄壁多层波纹管直边端口封口装置 Download PDF

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Publication number
WO2010118625A1
WO2010118625A1 PCT/CN2010/000228 CN2010000228W WO2010118625A1 WO 2010118625 A1 WO2010118625 A1 WO 2010118625A1 CN 2010000228 W CN2010000228 W CN 2010000228W WO 2010118625 A1 WO2010118625 A1 WO 2010118625A1
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WO
WIPO (PCT)
Prior art keywords
frame
wheel
rear guide
corrugated pipe
walking
Prior art date
Application number
PCT/CN2010/000228
Other languages
English (en)
French (fr)
Inventor
孟宪春
王凤双
钱玉
宋红伟
Original Assignee
秦皇岛北方管业有限公司
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Application filed by 秦皇岛北方管业有限公司 filed Critical 秦皇岛北方管业有限公司
Publication of WO2010118625A1 publication Critical patent/WO2010118625A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/02—Seam welding; Backing means; Inserts
    • B23K9/028—Seam welding; Backing means; Inserts for curved planar seams
    • B23K9/0282—Seam welding; Backing means; Inserts for curved planar seams for welding tube sections
    • B23K9/0286—Seam welding; Backing means; Inserts for curved planar seams for welding tube sections with an electrode moving around the fixed tube during the welding operation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/04—Tubular or hollow articles
    • B23K2101/06—Tubes

Definitions

  • the invention relates to a welding device, in particular to a special device for sealing a straight-side port of an ultra-large-diameter thin-walled multi-layer corrugated pipe, which belongs to the technical field of pipe fitting welding.
  • the metal corrugated tube is widely used in the pipeline system, and is usually made of thin-walled multi-layer austenitic stainless steel, and the thickness of the single layer is generally between 0. 5 and 1. 2 mm, and the number of layers is generally 2 to 6 layers. The thickness is 1. 0 ⁇ 7. 2 ⁇ .
  • Metal bellows manufacturing According to the provisions of GB/12777- 1999 "General Technical Conditions for Metal Bellows Expansion Joints", the ports of the straight section of the multi-layer corrugated pipe should be sealed by argon arc welding or seam welding to make the layers of the port melt together.
  • the prior art has three methods for sealing the high-end metal bellows straight edge port sealing, one of which: using a vertical electric energy storage seam welding machine for mechanical sealing; the second: using horizontal mechanical rotating equipment, with electric energy storage The seam welder completes the sealing; the third: the manual sealing.
  • the above three methods have the following problems: When using the method, due to the limitations of the mechanical rotating equipment, the maximum straightening of the bellows within DN2500 can only be completed. At the same time, an auxiliary supporting device is needed to ensure the sealing quality; Due to the excessive space occupied by the working site, the height of the multi-layer corrugated pipe is increased, and the sealing at the straight edge of the bellows is point contact.
  • the stability during the seam welding process is difficult to control, and only DN2500 ⁇ 4000 can be completed.
  • the bellows has a height of 1000 ⁇ and the bellows straight section is sealed.
  • the artificial argon arc is used for sealing, there are problems such as low efficiency, difficulty in quality, and high labor intensity.
  • only manual argon arc welding can be used to complete the seal.
  • the technical problem to be solved by the present invention is to provide a thin-walled multi-layer corrugated pipe straight-side port sealing device with high work efficiency and stable and reliable welding quality.
  • a thin-walled multi-layer corrugated pipe straight-side port sealing device which is special: it consists of a frame and a clamping walking portion mounted on the frame, a supporting guiding portion, and a smashing gun supporting plate, the clamping walking
  • the part includes a traveling motor traveling wheel, a pressure wheel and a pressure wheel adjusting mechanism, wherein the traveling motor drives the walking wheel, and the pressure wheel and the walking wheel are arranged side by side in the horizontal direction;
  • the support guiding portion is composed of a front guiding wheel, a rear guiding wheel, a front guiding frame and a rear guiding frame, wherein the front and rear guiding wheels are respectively rotatably supported on the front and rear guiding frames, and the front and rear guiding frames are respectively hinged at Front and rear of the rack.
  • the thin-walled multi-layer corrugated pipe straight-side port sealing device wherein the pressure roller adjusting mechanism is composed of a pressure roller frame, a pressure roller spring, a pressure roller adjusting screw and a pressure roller adjusting knob, and one end of the pressure roller frame is hinged to the frame, and One end of the pressing pressure roller, the adjusting screw is transversely passed through the middle of the pressure roller frame, one end of which is fixed to the frame, and the other end is combined with the adjusting knob screw, and the pressure spring is set on the adjusting screw, between the pressure roller frame and the frame .
  • the thin-walled multi-layer corrugated pipe straight-side port sealing device wherein the welding gun support plate is provided with a welding gun holder adjusting mechanism, a moving welding torch holder and a fixed welding torch holder, wherein the moving welding torch holder and the fixed welding gun holder are arranged side by side, the welding gun holder
  • the adjusting mechanism comprises an adjusting block, a longitudinal adjusting screw and a lateral adjusting screw, wherein the longitudinal adjusting screw is screwed with the upper part of the smashing gun support, the lower end is fixed with the adjusting block, the horizontal adjusting screw is transversely passed through the yellow gun supporting plate, the adjusting block, and the adjusting block The spiral is combined and the end is fixed to move the rifle.
  • the clamping traveling portion is further provided with a balance wheel, and the balance wheel is located at a lower portion of the frame, and the outer circumferential inner end of the balance wheel corresponds to the upper and lower inner end positions of the traveling wheel.
  • the thin-walled multi-layer corrugated pipe straight-side port sealing device wherein the rear guiding frame is provided with a transverse groove, the central portion of the two side wall plates corresponding to the slot is provided with a long hole, and the rear guiding frame is further provided with a guiding adjustment component.
  • the guiding adjustment assembly is composed of a guiding adjusting screw and a column nut. The column nut is located in a transverse groove of the rear guiding frame, and the adjusting screw passes through the long hole and is spirally engaged with the column nut.
  • the present invention designs a special device for the problem that the existing equipment cannot be applied to the straight-side port sealing welding of the ultra-large diameter thin-walled multi-layer corrugated pipe.
  • the invention is small in size, light in weight, easy to install and operate, and does not occupy a fixed site and Space, there is no limit on the height of the corrugated pipe to be processed.
  • This device can be used to seal the straight edge of any large corrugated pipe above DN500 with argon arc ⁇ automatic mechanical seal.
  • the quality of the boring mouth fully meets the standard requirements. Tests have shown that the use of the present invention can improve the production efficiency by 1 to 1.5 times, and has the characteristics of safe and stable operation, simple operation and easy realization.
  • Figure 1 is a schematic view of the structure of the present invention
  • Figure 2 is a left side view of Figure 1;
  • Figure 3 is a rear elevational view of Figure 1;
  • Figure 4 is a plan view of Figure 1;
  • FIG. 5 is a plan view showing the working state of the present invention.
  • the reference numerals in the drawings are as follows: 1. front guide wheel, 2. front guide frame; 3. frame, 4. travel motor, 5. walking wheel, 6. welding torch, 7. welding gun support plate, 8. longitudinal adjustment screw 9. Move the rifle holder, 10. Fix the welding gun holder, 11. Rear guide frame, 11-1. Transverse groove; 11-2. Long hole, 12. Rear guide wheel, 13. Workpiece to be welded, 14. Guide adjustment Screw, 15. Balance wheel, 16. Lateral adjustment screw, 17. Adjustment block, 18. Column nut, 19. Pressure roller adjustment knob, 20. Pressure roller adjustment screw, 21. Pressure roller frame, 22. Pressure roller spring, 23. Pressure wheel.
  • the apparatus of the present invention comprises a frame 3 and a clamp walking portion mounted on the frame, a support guide portion, and a welding gun support plate.
  • the support guide portion is composed of a front guide frame 2 and a rear guide frame 11 respectively provided with a front guide wheel 1, a rear guide wheel 12, and the front and rear guide frames are respectively hinged at the front and the rear of the frame.
  • the front and rear guide wheels and the rear guide wheel ride over the workpiece 13 to be welded, and on the one hand, the guiding device travels along the arc of the port on the workpiece to be rubbed, and on the other hand acts as a support for the device.
  • the rear guide frame is further provided with a guiding adjustment assembly
  • the guiding adjustment assembly is composed of a guiding adjusting screw 14 and a column nut 18, and a lateral groove 11-1 is provided on the rear guiding frame 11, and both sides of the groove
  • the middle portion of the wall plate is correspondingly provided with a long hole 11-2, and the column nut is located in the transverse groove of the rear guide frame, the adjusting screw passes through the long hole, and the middle portion is screw-fitted with the column nut.
  • the clamping walking portion includes a traveling motor 4, a traveling wheel 5, a pressing wheel 23, and a pressure roller adjusting mechanism.
  • the traveling motor drives the traveling wheel
  • the traveling motor is a DC motor
  • the electronic control system passes the inverse Variable speed regulation can be used for micro speed stepless speed regulation.
  • the outer peripheral of the walking wheel is pressurized to increase the friction.
  • the pressure wheel and the walking wheel are arranged side by side in the horizontal direction, and the straight side section of the workpiece 13 to be clamped is clamped by the traveling wheel and the pressure wheel.
  • the pressure wheel adjusting mechanism is used for adjusting the clamping force generated by the traveling wheel and the pressure wheel to treat the workpiece, and the pressure wheel adjusting mechanism is composed of the pressure wheel frame 21, the pressure wheel spring 22, the pressure wheel adjusting screw 20 and the pressure wheel adjusting knob 19
  • One end of the pressure roller frame is hinged to the frame, and the other end is hinged to the pressure wheel.
  • the adjusting screw is transversely passed through the middle of the pressure roller frame, one end of which is coupled with the frame, and the other end is combined with the adjusting handle screw, and the pressure wheel spring set is adjusted.
  • the screw is located between the pressure roller frame and the frame.
  • the balance walking wheel 15 is also provided in the clamping walking portion, and the balance wheel is located In the lower part of the frame, the inner side of the outer circumference of the balance wheel corresponds to the position of the inner side of the outer circumference of the traveling wheel.
  • the inner side of the balance wheel is in close contact with the workpiece 13 to be welded and rotates with the device.
  • the welding gun support plate 7 of the device is used for fixing the squirt gun 6, the welding gun support plate is provided with a welding gun holder adjusting mechanism, the moving welding torch holder 9 and the fixed welding torch holder 10, the moving welding torch holder and the fixing
  • the welding gun racks are arranged side by side, and the position of the center connection of the two welding gun racks corresponds to the workpiece to be welded.
  • the torch holder adjustment mechanism only slightly adjusts the position of the moving torch holder 9.
  • the welding gun frame adjusting mechanism comprises an adjusting block 17, a longitudinal adjusting screw 8, and a lateral adjusting screw 16, wherein the longitudinal adjusting screw is screwed to the upper portion of the breech gun, the lower end is fixed to the adjusting block, and the vertical adjusting screw is rotated to realize the moving rifle Fine adjustment of the upper and lower positions of the frame 9; the horizontal adjustment screw 16 transversely passes through the slot and the adjustment block 17 of the welding gun support plate, and is screwed with the adjustment block, the end portion of which is fixedly attached to the movable welding gun holder 9, and the horizontal adjustment screw 16 is rotated. Fine adjustment of the horizontal position of the moving torch holder 9 (left and right in Fig. 2) can be achieved.
  • the invention has the advantages of small volume, total weight of no more than 4 kilograms, and is placed on the straight edge port of the bedding metal corrugated pipe during work, and the position of each part is adjusted, and the walking motor and the welding machine can be automatically completed to directly complete the metal bellows. Sealing of the edge port ⁇

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)

Description

薄壁多层波纹管直边端口封口装置
技术领域
本发明涉及一种焊接装置， 特别是用于超大直径薄壁多层波纹管直边端口封口焊接的专 用装置， 属管件焊接技术领域。
背景技术
金属波纹管广泛应用于管路系统中， 通常采用薄壁多层奥氏体不锈钢制造， 其单层厚度 一般在 0. 5〜1. 2mm之间， 其层数一般为 2〜6层， 总体厚度为 1. 0〜7. 2瞧。 金属波纹管制造 按 GB/12777- 1999 《金属波纹管膨胀节通用技术条件》 中的规定， 多层波纹管直边段端口应 用氩弧焊或滚焊封边，使端口各层熔为整体。现有技术对于多层金属波纹管直边段端口封 口焊接有三种方法， 其一： 采用立式电储能缝焊机进行机械封口； 其二： 采用卧式机械转动 设备， 配以电储能缝焊机完成封口； 其三： 采用人工进行封口。上述三种方法存在问题如下： 采用方法一时， 由于机械转动设备的局限， 最大仅能完成 DN2500以内的波纹管直边段封口， 同时， 需要辅助的支承装置， 以保证封口质量； 采用方法二时， 由于作业场地占用空间过大， 随着多层波纹管高度增高， 加之波纹管直边段封口处为点接触， 在缝焊过程中的稳定性较难 控制， 而且也仅能完成 DN2500〜4000、 波纹管高度为 1000誦 的波纹管直边段封口。 而若采 用人工氩弧悍封口则存有效率低、 质量难以保证、 人工劳动强度大等问题。 目前， 基于设备 的局限性，对于大于 DN4000以上的波纹管的直边段封口，只能采取人工氩弧焊封口予以完成。 发明内容
本发明所要解决的技术问题是：提供一种工作效率高、焊接质量稳定可靠的薄壁多层波 纹管直边端口封口装置。
本发明所称问题是由以下技术方案解决的：
一种薄壁多层波纹管直边端口封口装置， 其特别之处是： 它由机架和安装在机架上的夹 持行走部分、 支承导向部分、 悍枪支板组成， 所述夹持行走部分包括行走电机行走轮、 压轮 和压轮调整机构， 其中， 行走电机驱动行走轮， 压轮与行走轮在水平方向上并排设置； 所述 支承导向部分由前导向轮、 后导向轮、 前导向架、 后导向架构成，，其中， 前、 后导向轮分别 旋转支承在前、 后导向架上， 所述前、 后导向架分别铰接在机架前部和后部。
上述薄壁多层波纹管直边端口封口装置， 所述压轮调整机构由压轮架、 压轮弹簧、 压轮 调整螺杆和压轮调整旋柄构成， 压轮架一端与机架铰接、 另一端铰接压轮， 调整螺杆由压轮 架中部横向穿过， 其一端固接机架， 另一端与调整旋柄螺旋结合， 压轮弹簧套装在调整螺杆 上、 位于压轮架与机架之间。
上述薄壁多层波纹管直边端口封口装置， 所述焊枪支板上设有焊枪架调整机构、 移动焊 枪架和固定焊枪架， 所述移动焊枪架和固定焊枪架并排设置， 所述焊枪架调整机构包括调整 块、 纵向调整螺杆、 横向调整螺杆， 其中， 纵向调整螺杆与悍枪支板上部螺旋结合， 其下端 固接调整块， 横向调整螺杆横向穿过煌枪支板、 调整块， 与调整块螺旋结合， 其端部固接移 动悍枪架。
上述薄壁多层波纹管直边端口封口装置， 所述夹持行走部分还设有平衡轮， 平衡轮位于 机架下部， 平衡轮外周内侧端与行走轮外周内侧端位置上下对应。
上述薄壁多层波纹管直边端口封口装置， 所述后导向架上设有横向槽， 该槽两侧壁板中 部位置对应的设有长孔， 后导向架上还设有导向调整组件， 所述导向调整组件由导向调整螺 杆和柱状螺母组成， 所述柱状螺母位于后导向架的横向槽中， 调整螺杆穿过长孔其中部与柱 状螺母螺旋配合。
' 本发明针对现有设备不能适用于超大直径薄壁多层波纹管直边端口封口焊接的问题而设 计一种专用装置， 本发明体积小、 重量轻、 便于安装操作、 且不占用固定场地和空间， 对所 加工的波纹管高度无任何限制要求， 采用该装置可对 DN500以上任何超大波纹管直边段端口 采用氩弧悍自动机械封口， 其悍口质量完全符合标准要求。 试验表明， 采用本发明可提高生 产效率 1〜1. 5倍， 而且具有运行安全稳定、 操作简单、 易于实现的特点。
附图说明
图 1是本发明的结构示意图；
图 2是图 1的左视图；
图 3是图 1的后视图；
图 4是图 1的俯视图；
ζ5 图 5是本发明工作状态俯视图。 附图中各标号表示如下： 1. 前导向轮， 2. 前导向架； 3.机架， 4.行走电机， 5.行走轮， 6.焊枪， 7. 焊枪支板， 8. 纵向调整螺杆， 9. 移动悍枪架， 10.固定焊枪架， 11. 后导向架， 11-1.横向槽； 11-2.长孔， 12. 后导向轮， 13.待焊工件， 14. 导向调整螺杆， 15.平衡轮， 16. 横向调整螺杆， 17. 调整块， 18. 柱状螺母， 19. 压轮调整旋柄， 20. 压轮调整螺杆， 21. 压轮架， 22. 压轮弹簧， 23.压轮。
具体实施方式
参看图 1、 图 4， 本发明所述装置由机架 3和安装在机架上的夹持行走部分、 支承导向 部分、 焊枪支板组成。 支承导向部分由分别设有前导向轮 1、 后导向轮 12的前导向架 2、 后 导向架 11构成， 前、后导向架分别铰接在机架的前部和后部。前后导向轮和后导向轮骑行在 待焊工件 13上方，其作用一方面引导装置沿待悍工件上端口弧线行走，另一方面起到对装置 的支承作用。 为保证导向轮运行稳定， 后导向架上还设有导向调整组件， 导向调整组件由导 向调整螺杆 14和柱状螺母 18组成， 在后导向架 11上设有横向槽 11-1， 该槽两侧壁板中部 位置对应的设有长孔 11-2， 柱状螺母位于后导向架的横向槽中， 调整螺杆穿过长孔、 其中部 与柱状螺母螺旋配合。 参看图 5， 本装置工作时， 将其置放在待悍工件端口上， 前、 后导向 架根据待焊工件直径旋转一定的角度， 其中， 前导向架为自由转动， 后导向架旋转角度通过 转动调整螺杆 14实现，当转动调整螺杆 14时，通过柱状螺母 18的位移推动后导向架实现角 度调整。
参看图 1-图 4， 所述夹持行走部分包括行走电机 4、行走轮 5、压轮 23和压轮调整机构， 其中， 行走电机驱动行走轮， 行走电机为直流电机， 电控系统通过逆变调速可微速无级调速。 为防止行走轮打滑， 在行走轮外周机加压花处理以增加摩擦力。 压轮与行走轮在水平方向上 并排设置， 待悍工件 13直边段被行走轮和压轮所夹持，行走电机带动行走轮转动时， 装置整 体运行， 压轮随动。 压轮调整机构用于调整行走轮与压轮对待悍工件产生的夹持力大小， 压 轮调整机构由压轮架 21、压轮弹簧 22、压轮调整螺杆 20和压轮调整旋柄 19构成， 压轮架一 端与机架铰接、 另一端铰接压轮， 调整螺杆由压轮架中部横向穿过， 其一端与机架悍合， 另 一端与调整旋柄螺旋结合， 压轮弹簧套装在调整螺杆上位于压轮架与机架之间。 旋转压轮调 整旋柄 19， 即可调整压轮弹簧的伸缩， 从而实现压轮对待悍工件压力大小的调整。 为防止因 行走电机偏重倾斜使焊枪轴线偏离焊缝中心线， 夹持行走部分还设有平衡轮 15， 平衡轮位于 机架下部， 平衡轮外周内侧端与行走轮外周内侧端位置上下对应， 装置工作时平衡轮内侧紧 贴待焊工件 13， 并随装置行走转动。
85 参看图 1、 图 2， 本装置所设置的焊枪支板 7用于固定悍枪 6， 焊枪支板上设有焊枪架调 整机构、 移动焊枪架 9和固定焊枪架 10， 移动焊枪架和固定焊枪架并排设置， 两焊枪架中心 连线的位置与待焊工件对应。 焊枪架调整机构只对移动焊枪架 9的位置进行微量调整。 所述 焊枪架调整机构包括调整块 17、 纵向调整螺杆 8、 横向调整螺杆 16， 其中， 纵向调整螺杆与 悍枪支板上部螺旋结合， 其下端固接调整块， 旋转纵向调整螺杆可实现移动悍枪架 9上下位 90 置的微调； 横向调整螺杆 16横向穿过焊枪支板上的槽孔和调整块 17， 且与调整块螺旋结合， 其端部固接移动焊枪架 9， 旋转横向调整螺杆 16可实现移动焊枪架 9水平方向上（图 2左右 方向） 的微调。
本发明体积小， 总体重量不超过 4公斤， 工作时置放在被悍金属波纹管直边段端口上， 将各部分位置调整好， 开启行走电机和焊机即可自动完成对金属波纹管直边段端口的封口悍

Claims

权 利 要 求 书
1. 一种薄壁多层波纹管直边端口封口装置， 其特征在于： 它由机架（3 )和安装在机 100 架上的夹持行走部分、支承导向部分、悍枪支板组成， 所述夹持行走部分包括行走电机（4)、 行走轮 （5)、 压轮 （23 ) 和压轮调整机构， 其中， 行走电机驱动行走轮， 压轮与行走轮在水 平方向上并排设置； 所述支承导向部分由前导向轮（1 )、 后导向轮（12 )、 前导向架（2)、 后 导向架 （11 ) 构成， 其中， 前、 后导向轮分别旋转支承在前、 后导向架上， 所述前、 后导向 架分别铰接在机架前部和后部。
105 2. 根据权利要求 1所述的薄壁多层波纹管直边端口封口装置， 其特征在于： 所述压轮 调整机构由压轮架（21 )、 压轮弹簧（22)、 压轮调整螺杆（20)和压轮调整旋柄（19)构成， 压轮架一端与机架铰接、 另一端铰接压轮， 调整螺杆由压轮架中部横向穿过， 其一端固接机 架， 另一端与调整旋柄螺旋结合， 压轮弹簧套装在调整螺杆上、 位于压轮架与机架之间。
3. 根据权利要求 2所述的薄壁多层波纹管直边端口封口装置， 其特征在于： 所述焊枪 ΙίΟ 支板（7 )上设有焊枪架调整机构、 移动焊枪架（9 )和固定焊枪架（10)， 所述移动焊枪架和 固定焊枪架并排设置， 所述悍枪架调整机构包括调整块（17)、 纵向调整螺杆（8)、 横向调整 螺杆（16)， 其中， 纵向调整螺杆与悍枪支板上部螺旋结合， 其下端固接调整块， 横向调整螺 杆横向穿过焊枪支板、 调整块， 与调整块螺旋结合， 其端部固接移动焊枪架。
4. 根据权利要求 1或 2或 3所述的薄壁多层波纹管直边端口封口装置， 其特征在于： 所 (ίί 述夹持行走部分还设有平衡轮（15)， 平衡轮位于机架下部， 平衡轮外周内侧端与行走轮外周 内侧端位置上下对应。
5. 根据权利要求 4所述的薄壁多层波纹管直边端口封口装置， 其特征在于： 所述后导向 架 （11 ) 上设有横向槽 （11-1 )， 该槽两侧壁板中部位置对应的设有长孔 （11-2)， 后导向架 上还设有导向调整组件， 所述导向调整组件由导向调整螺杆 （14 ) 和柱状螺母 （18 ) 组成，
120 所述柱状螺母位于后导向架的横向槽中， 调整螺杆穿过长孔其中部与柱状螺母螺旋配合。
PCT/CN2010/000228 2009-04-17 2010-02-22 薄壁多层波纹管直边端口封口装置 WO2010118625A1 (zh)

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