WO2023015686A1 - 一种内衬过程对内衬芯管无损的内衬设备及方法 - Google Patents

一种内衬过程对内衬芯管无损的内衬设备及方法 Download PDF

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Publication number
WO2023015686A1
WO2023015686A1 PCT/CN2021/120680 CN2021120680W WO2023015686A1 WO 2023015686 A1 WO2023015686 A1 WO 2023015686A1 CN 2021120680 W CN2021120680 W CN 2021120680W WO 2023015686 A1 WO2023015686 A1 WO 2023015686A1
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Prior art keywords
lining
pipe
traction
steel pipe
equipment
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PCT/CN2021/120680
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English (en)
French (fr)
Inventor
金崇阳
刘跃明
褚展鹏
褚展宙
陈江慧
霍福磊
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临海伟星新型建材有限公司
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Publication of WO2023015686A1 publication Critical patent/WO2023015686A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • B29C63/26—Lining or sheathing of internal surfaces
    • B29C63/34—Lining or sheathing of internal surfaces using tubular layers or sheathings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B29L2023/22—Tubes or pipes, i.e. rigid

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  • the invention belongs to the field of pipe material processing, and is a production equipment for lining pipes, in particular to a lining equipment and method that does not damage the lining core pipe during the lining process, and can effectively Production equipment that prevents wear of the lined core tube during the lining process.
  • Plastic pipes have the characteristics of acid resistance, alkali resistance and corrosion resistance, which can just make up for the defects of steel pipes and serve as pipelines for acid, alkali or corrosive fluid transportation. Due to the insufficient ring rigidity of the plastic pipe itself, it is difficult to withstand high delivery pressure when used alone. Therefore, the product form of plastic-lined steel pipe is usually used as a delivery pipeline for special media.
  • plastic pipes are lined into steel pipes by using a reducer to reduce the diameter, and at the same time, the plastic pipe is directly lined into the steel pipe by the motor of the reducer itself. Since the plastic pipe is not subjected to any external force after shrinking, it will rebound quickly after leaving the roller of the reducing machine. At this time, it is forcibly lined into the inside of the steel pipe, and strong friction will occur between the core pipe and the inner wall of the steel pipe, resulting in damage to the outer wall of the core pipe. At this time, there will be a gap between the core pipe and the steel pipe. When negative pressure is generated inside the core tube, the air in the gap will easily flatten the core tube, resulting in failure of the composite tube.
  • the present invention provides a lining device and method that does not damage the lining core pipe during the lining process.
  • the tractor is used to connect the head and tail ends of the lining pipe during the entire process of reducing the diameter of the lining, so as to continuously provide more stable axial stress.
  • the liner core tube continues to receive relatively stable axial stress less than its yield stress after the diameter reduction is completed, maintain the diameter reduction state, and prevent springback.
  • the outer diameter of the inner core pipe is slightly smaller than the inner diameter of the steel pipe, and it can be lined inside the steel pipe very smoothly without obvious friction, which can effectively prevent the outer surface of the inner core pipe from being worn out, which will lead to failure of the composite pipe.
  • a lining device that does not damage the lining core pipe during the lining process including an equipment frame, a multi-stage reducing module, a traction device, a fixing device, a guide wheel set, and a protective cover, and the equipment frame is used for carrying equipment
  • the main body; the multi-stage reducing module is arranged on the equipment frame for reducing the diameter of the inner liner;
  • the pipe provides continuous traction to complete the operation of lining the steel pipe;
  • the fixing device is arranged on the equipment frame to fix the steel pipe;
  • the guide wheels are respectively arranged at each position of the frame to guide transmission to reduce vibration and maintain the stability of the lining process, including a movable guide wheel and several fixed guide wheels, the movable guide wheel is set at the head of the frame, at the exit position of the steel pipe; the protective cover is set at the entrance of the steel pipe Both ends of the outlet play a protective role;
  • the centerlines of the inner liner, the multi-stage reducing module and the steel pipe are on the same straight line.
  • the above-mentioned lining equipment that does not damage the lining core pipe during the lining process also includes a wireless tension sensor connected to the outside of the pulling head near the steel pipe side, and the wireless tension sensor is externally connected to a display device to display the inner lining in real time. The pulling force of the traction cable during the process.
  • the equipment frame is a steel structure as a whole, and is composed of a plurality of independent racks with a cuboid structure, each independent rack is connected by buckles, and the bottom of each independent rack is provided with rollers to facilitate the movement of the rack.
  • the rollers are provided with a locking device, which is used to fix the frame after a selected position to prevent sliding.
  • the multi-stage diameter reduction module is composed of three independent diameter reduction modules, the main body of each diameter reduction module is a square steel frame, and a diameter reduction roller is provided on each of the upper, lower, left, and right sides, and the diameter reduction roller can be adjusted by a pitch adjustment screw. Adjust the relative position, and then realize the control of the diameter reduction.
  • the three independent diameter reduction modules are arranged side by side in the middle of the equipment frame. path.
  • the main body of the traction device is composed of a hoist, a traction head, and a traction cable.
  • the traction cable is wound in the take-up reel of the hoist. Stretch out in two directions, left and right, and after the steel cable passes through the guide wheels set at different positions of the equipment frame, it uses a special traction head to connect with the traction heads at the left and right ends of the inner core tube. At this time, after the hoist is running, one end of the steel cable will be received in the hoist take-up reel, and the steel cable on the other side will be led out of the take-up reel.
  • the traction head includes a traction outer body, a traction inner vertebral body and a threaded connection head
  • the traction outer body is a hollow conical structure with a tapered inner groove matching the traction inner cone
  • the top center of the traction outer body has a threaded through hole
  • the top center of the traction inner vertebral body has a threaded groove
  • the threaded connection head passes through the threaded through hole to connect with the threaded groove.
  • the fixing device is composed of a limit clamp and a support member, the limit clamp is arranged at both ends of the steel pipe, and the opening and closing can be realized by turning the handle connected with the thread.
  • the supporting piece is in the shape of a "Y" as a whole, and it is set between two limit fixtures, and the height is adjusted by threads to support the steel pipe.
  • the movable guide wheel is fixed in the middle of a bearing and rotates independently without being affected by the bearing.
  • the shoulders are respectively connected to two hydraulic rods, and a "back"-shaped limit device is inserted at both ends of the bearing , the inner and outer ends of the limit device are respectively provided with limit nuts passing through the bearing to limit the position of the bearing and ensure that when the hydraulic rod is pushed back and forth, the bearing moves perpendicular to the limit device.
  • the protective covers are respectively arranged at the inlet and outlet of the steel pipes, the main body is a steel structure, and an observation window made of acrylic plates is provided on both sides to observe the condition of the inner lining.
  • the present invention also proposes a lining method in which the lining process is non-destructive to the lining core pipe, which is carried out by using the above-mentioned lining equipment, including the following steps:
  • the traction cables at both ends of the hoist protrude from the left and right directions respectively.
  • the traction cables at the left end are connected to the traction head on the left after turning through several fixed guide wheels, and the traction cables at the right end pass through after turning through several guide wheels.
  • Copper pipes and multi-stage reducing modules are connected to the right traction head, so that the hoist connects the left and right traction heads through traction cables, thereby forming a traction force on the inner liner;
  • the invention discloses a lining device and method which are non-destructive to the lining core pipe during the lining process, which can realize the rapid lining of the plastic pipe into the steel pipe, and at the same time maintain the axial stress of the lining pipe during the lining process to avoid its rapid rebound Finally, it will rub against the inner wall of the steel pipe, wear the surface, and cause the composite core tube to be flattened and fail.
  • the method of front and rear double connection of the liner pipe can effectively control the axial stress of the liner pipe during the process, and maintain its diameter-shrinking state without damaging the liner pipe.
  • the wireless tension sensor is connected with an external display device, which can display and monitor the tension in real time for easy control.
  • Fig. 1 is a schematic diagram of the overall structure of the lining equipment of the present invention
  • Fig. 2 is a schematic structural diagram of a multi-stage reducing module of the lining equipment of the present invention
  • Fig. 3 is a schematic diagram of the sectional structure of the leading head of the lining equipment of the present invention.
  • Fig. 4 is a top view of part A in Fig. 1, that is, the support structure of the movable guide wheel of the present invention
  • a kind of lining equipment that does not damage the lining core pipe during the lining process includes an equipment frame 1, a multi-stage diameter reducing module 2, a traction device, a fixing device, a guide wheel group and a protective cover 9.
  • the centerlines of the liner 6, the multi-stage diameter reduction module 2 and the steel pipe 7 are on the same straight line, the two ends of the liner pipe 6 are connected to the pulling head 4 and arranged at one end of the equipment rack, and the multi-stage diameter reduction module 2 is arranged on the equipment rack
  • the middle position of the steel pipe 7 is fixed on the fixing device and arranged at the other end of the equipment frame.
  • the traction cable 5 passes through the steel pipe and the reducing module after being guided by each guide wheel and is connected to the traction head.
  • the hoist 3 provides traction to drive the inner
  • the liner completes the lined steel pipe operation.
  • the equipment rack 1 is the main body used to carry the equipment. It is a steel structure as a whole and is composed of a plurality of independent racks of cuboid structure. The independent racks are connected by buckles. Roller 12, facilitates frame to move, and described roller 12 is provided with locking device, is used for fixing frame after the selected position, prevents sliding.
  • the multi-stage diameter reduction module 2 is arranged on the equipment frame 1, and is used for reducing the diameter of the inner liner 6.
  • the multi-stage diameter reduction module 2 is composed of three independent diameter reduction modules, and each diameter reduction module
  • the main body of the module is a square steel frame 21, with a diameter-reducing roller 22 on each of the upper, lower, left, and right sides.
  • the relative position of the diameter-reducing roller 22 can be adjusted by a distance-adjusting screw 23, thereby realizing the control of the diameter reduction.
  • the diameter modules are arranged side by side in the middle of the equipment frame 1, and are gradually reduced according to the size and diameter reduction requirements of the inner liner pipe to realize the diameter reduction of the inner liner pipe.
  • the main body of the traction device is composed of a hoist 3, a traction head 4 and a traction cable 5, which are used to provide continuous traction to the inner lining pipe 6 to complete the operation of the inner steel pipe 7, and the traction cable is wound on the hoist 3 take-up reel , the take-up method is not fixed at one end, but after the traction cable is wound on the take-up reel for a certain number of turns, the two ends of the cable extend from the left and right directions respectively. At this time, after the winch is running, one end of the steel cable will be received in the winch take-up reel, and the other end of the steel cable will be led out of the take-up reel.
  • the steel cable After the steel cable passes through the guide wheels set at different positions of the frame, it is connected with the left and right ends of the lining core pipe by using a special traction head.
  • a wireless tension sensor connected to the outside of the traction head at the head position, and an external display device, which can display the tension of the section of the steel cable in real time during the lining process.
  • traction head 4 wherein comprises traction outer body 41, traction inner vertebral body 42 and threaded joint 43, and described traction outer body 41 is a hollow conical structure, and the inside has and described traction inner cone 42 matching tapered inner groove, the top center of the traction outer body 41 has a threaded through hole 44, the top center of the traction inner vertebral body 42 has a threaded groove 45, and the threaded connector 43 passes through the threaded through hole 44 and is connected with the threaded groove 45 .
  • the fixing device is arranged on the equipment frame 1 for fixing the steel pipe 7; the fixing device is composed of a limit fixture 10 and a support member 11.
  • the fixing device is composed of a limit fixture 10 and a support member 11.
  • the end can be opened and closed by turning the handle connected to the screw thread, and all clamps with locking and fixing functions in the prior art can be applied to the present invention.
  • the supporting member 11 is in the shape of a "Y" as a whole, and is arranged between the two limit fixtures 10, and its height is adjusted by threads to support the steel pipe.
  • the guide wheel group is respectively arranged at each position of the frame, guides the transmission of the traction cable 5, reduces vibration, and keeps the stability of the lining process, including a movable guide wheel 8 and several fixed guide wheels , the movable guide wheel 8 is arranged on the frame head, at the outlet position of the steel pipe 7; the movable guide wheel 8 is fixed on a bearing 13 middle position (this part of the structure is not shown in Fig. 1, shown in Fig.
  • a "back"-shaped limiter 14 is inserted into the two ends of the bearing 13, and the limiter 14 is set on the bearing steel frame, and the inner and outer ends are respectively provided with limiters that pass through the bearing.
  • Bit nut 15, bearing 13 is round, and there are threads at both ends.
  • the shoulders of the bearing 13 are respectively connected to two hydraulic rods 16, the lower end of the hydraulic rod is fixed on one end of the bearing steel frame, power is provided by the hydraulic device, and the position adjustment of the movable guide wheel 8 is realized by adjusting the hydraulic rod. 8 relative position, so as to change the tension of the traction cable, and then control the magnitude of the axial stress acting on the inner liner.
  • the purpose of controlling the stress is to maintain the shrinkage state of the lining pipe. If the stress is removed at this time, the lining pipe will rebound instantly and cannot be lined into the steel pipe; if the stress is too large and exceeds the yield stress of the material, then It will lead to plastic deformation of the inner liner, which cannot be restored to its original shape.
  • the setting direction of the hydraulic rod is the same as the moving direction of the steel cable, and its function is expansion and contraction. The effect is to drive the bearing to move back and forth and adjust the tension of the steel cable.
  • the protective cover 9 is arranged at the two ends of the inlet and outlet of the steel pipe 7 to play a protective role.
  • the main body is a steel structure, and an observation window made of acrylic plate is respectively arranged on both sides to observe the condition of the inner lining.
  • a kind of lining method of the present invention is not damaged to lining core pipe, adopts above-mentioned lining equipment to carry out, comprises the following steps:
  • the traction cables 5 at both ends of the hoist protrude from the left and right directions respectively.
  • the traction cables at the left end are connected to the traction head on the left after being steered by several fixed guide wheels, and the traction cables at the right end pass through after being steered by several rollers.
  • the copper pipe 7 and the multi-stage reducing module 2 are connected to the right traction head, so that the hoist 3 connects the left and right traction heads through the traction cable 5, thereby forming a traction force on the inner liner 6;
  • the display device connected by the wireless tension sensor can adjust the hydraulic lever of the active guide wheel part according to the real-time display of the traction force of the inner liner to realize the adjustment of the position of the guide wheel.
  • By adjusting the relative position of the active guide wheel 8 Change the tension of the entire traction cable, and then control the axial stress acting on the inner liner;
  • the present invention provides a kind of lining equipment and method that does not damage the lining core pipe during the lining process.
  • the pulling head is used to connect the head and tail ends of the lining pipe in the whole process of reducing the diameter of the lining to continuously provide relatively stable axial stress. .
  • the liner core tube continues to receive relatively stable axial stress less than its yield stress after the diameter reduction is completed, maintain the diameter reduction state, and prevent springback.
  • the outer diameter of the lining core tube is smaller than the inner diameter of the steel pipe, and can be lined inside the steel pipe extremely smoothly without obvious friction, which can effectively prevent the outer surface of the lining core tube from being worn out, thereby causing the composite pipe to fail.
  • the process of the present invention is convenient and quick to operate , the effect is good, and it is suitable for industrial popularization and application.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

本发明公开了一种内衬过程对内衬芯管无损的内衬设备及方法，包括设备机架、多级缩径模块、牵引装置、固定装置、导轮组以及防护罩，内衬管、多级缩径模块以及钢管的中心线在同一直线上，内衬管两端连接牵引头设置在设备机架的一端，钢管固定在固定装置上设置在设备机架的另一端，由卷扬机提供牵引力带动内衬管完成内衬钢管操作。利用牵引头，在缩径内衬全程与内衬管头尾两端连接，向内衬管提供持续的、稳定的轴向应力，保证内衬芯管在完成缩径后，维持缩径状态，防止发生回弹。此时内衬芯管外径小于钢管内径，可以极其顺利的衬入钢管内部，不会发生明显摩擦，可有效防止内衬芯管外表面磨损，进而导致复合管失效。

Description

一种内衬过程对内衬芯管无损的内衬设备及方法 技术领域
本发明属于管材加工领域，是一种内衬管道的生产设备，具体涉及一种内衬过程对内衬芯管无损的内衬设备及方法，可以在塑料管道内衬如钢管过程中，能有效防止内衬芯管在内衬过程中发生磨损的生产设备。
背景技术
钢管是最常见的输送管道，但是在输送酸碱或者带有腐蚀性的流体时，经常出现腐蚀破损情况，导致介质泄露，即使做过防腐处理的钢管依旧难以长期使用。塑料管道具有耐酸耐碱耐腐蚀的特性，刚好可以弥补钢管缺陷，作为酸、碱或者腐蚀性流体输送管道。由于塑料管道本身环刚度不足，单独使用难以承受较高输送压力。因此，通常采用塑料内衬钢管的产品形式，作为特殊介质的输送管道。
常规塑料管道内衬入钢管的方式是利用缩径机缩径，同时，靠缩径机自身电机带动塑料管道直接内衬入钢管中。由于塑料管道缩径完之后并没有受到任何外力作用，离开缩径机滚轮后，会快速回弹。此时强行将其衬入钢管内部，芯管和钢管内壁会发生较强摩擦，致使芯管外壁受损。此时，芯管和钢管之间就会存在间隙。当芯管内部产生负压时，间隙内的空气极易将芯管压扁，导致复合管失效。
发明内容
针对上述问题情况，本发明提供一种内衬过程对内衬芯管无损的内衬设备及方法，利用牵引头，在缩径内衬全程与内衬管头尾两端连接，持续提供较为稳定的轴向应力。保证内衬芯管在完成缩径后，持续受到小于其屈服应力的较为稳定的轴向应力，维持缩径状态，防止发生回弹。此时内衬芯管外径略小于钢管内径，可以极其顺利的衬入钢管内部，不会发生明显摩擦，可有效防止内衬芯管外表面磨损，进而导致复合管失效。
为了实现上述目的，本发明采取的技术方案为：
一种内衬过程对内衬芯管无损的内衬设备，包括设备机架、多级缩径模块、牵引装置、固定装置、导轮组以及防护罩，所述设备机架，用于承载设备的主体；所述多级缩径模块设置在设备机架上，用于对内衬管进行缩径；所述牵引装置主体由卷扬机、牵引头和牵引钢索构成，用于对所述内衬管提供持续的牵引力，完成内衬钢管的操作；所述固定装置设置在设备机架上，用于对钢管进行固定；所述导轮组，分别设置在机架各位置，引导牵引钢索的传动，减少抖动，保持内衬过程的稳定，包括一个活动导轮和若干固定导轮，所述活动导轮设 置在机架头部，钢管出口位置处；所述防护罩，设置在钢管的进出口两端，起保护作用；所述内衬管、多级缩径模块以及钢管的中心线在同一直线上。
进一步的，所述的一种内衬过程对内衬芯管无损的内衬设备还包括一个无线拉力传感器，连接在靠近钢管一侧的牵引头外侧，无线拉力传感器外接显示装置，实时显示内衬过程中牵引钢索的拉力大小。
进一步的，所述设备机架整体为钢结构，由多个长方体结构的独立机架组成，各独立机架之间通过卡扣连接，每个独立机架底部设有滚轮，方便机架移动，所述滚轮设有抱死装置，选定位置后用于固定机架，防止滑动。
进一步的，所述多级缩径模块由三个独立缩径模块构成，每个缩径模块主体为正方形钢架，上下左右四边各设有一个缩径滚轮，缩径滚轮可通过一个调距螺丝调节相对位置，进而实现对缩径量的控制，所述三个独立缩径模块并列设置在设备机架中部位置，根据内衬管尺寸及缩径量要求，逐级递减，实现内衬管缩径。
进一步的，牵引装置主体由卷扬机、牵引头和牵引钢索构成，所述牵引钢索缠绕在卷扬机收线盘内，牵引钢索在收线盘缠绕一定圈数之后，两端牵引钢索分别从左右两个方向伸出，钢索经过设定在设备机架不同位置的导轮组之后，利用专用牵引头，与内衬芯管左右两端的牵引头连接。此时，运转卷扬机后，一端钢索会收入卷扬机收线盘，另一边的钢索则会被引出收线盘。
进一步的，所述牵引头包括牵引外体、牵引内椎体以及螺纹连接头，所述牵引外体为中空的锥形结构，内部具有与所述牵引内锥体相配合的锥形内槽，牵引外体的顶部中央具有螺纹通孔，牵引内椎体的顶部中央具有螺纹槽，螺纹连接头穿过螺纹通孔与螺纹槽连接。
进一步的，固定装置由限位夹具和一个支撑件组成，所述限位夹具设置在钢管两端，通过转动连接螺纹的把手实现开合。支撑件整体呈“Y”形，设置在两个限位夹具中间，通过螺纹调节高度，用以支撑钢管。
进一步的，所述活动导轮固定在一根轴承中部位置，独立转动，不受轴承影响，双肩位置分别与两个液压杆连接，所述轴承两端分别插入一个“回”字型限位装置，所述限位装置内外两端分别设有穿过轴承的限位螺母，用以限制轴承位置，保证液压杆前后推动时，轴承垂直于限位装置运动，通过调节液压杆，实现活动导轮相对位置的调节，从而改变牵引钢索的张紧情况，进而控制作用在内衬管上轴向应力的大小。
更进一步的，所述防护罩分别设置在钢管进出口，主体为钢结构，两侧分别设有一个由亚克力板构成的观察窗口，用以观察内衬情况。
本发明还提出了一种内衬过程对内衬芯管无损的内衬方法，采用上述内衬设备进行，包括如下步骤：
(1)选用合适长度的钢管，将钢管放在支撑件上，并通过两端的夹具将钢管固定；
(2)选择合适缩径量的缩径模块，将选择好的缩径模块安装在设备机架上；
(3)将内衬管两端固定连接在两侧的牵引头上；
(4)卷扬机两端牵引钢索分别从左右两个方向伸出，左端牵引钢索经过数个固定导轮转向后与左侧牵引头连接，右端牵引钢索经过数个导轮转向后穿过铜管、多级缩径模块后与右侧牵引头连接，从而卷扬机通过牵引钢索将左右牵引头连接起来，从而对内衬管形成牵引力；
(5)盖上防护罩，启动卷扬机，牵引钢索拉动牵引头向前移动，进而带动内衬管移动，内衬管通过缩径模块后发生缩径变形，进入到钢管的内腔内；
(6)通过通过无线拉力传感器连接的显示装置，根据实时显示内衬管所受牵引力的大小，调节活动导轮部分的液压杆，实现活动导轮位置的调节，通过调节该活动导轮相对位置，改变整条牵引钢索的张紧情况，使得作用在内衬管轴向方向上的应力维持在材料屈服应力以内一个安全范围中，维持内衬管的缩径状态，进而控制作用在内衬管上轴向应力的大小；
(7)当内衬管两端全部牵引至钢管内部时，停止卷扬机运行，并收缩液压杆，放松钢索，释放作用在内衬管轴向上的应力，静置时间8h，待内衬管自然回弹之后，将其放置于80℃恒温烘箱，促使其二次回弹，回弹时间为8h，内衬管实现充分回弹，利用内衬管自身的回弹性，使穿衬于钢管内的内衬管紧紧地粘贴在钢管内壁上，即完成内衬塑料管的钢管制备。
有益效果
本发明公开了一种内衬过程对内衬芯管无损的内衬设备及方法，可实现塑料管道快速衬入钢管，同时在内衬过程中保持内衬管轴向应力，避免其快速回弹后与钢管内壁产生摩擦，磨损表面，造成复合管芯管压扁失效。
(1)采用内衬管前后双连接的方式，可以有效控制过程中，内衬管轴向应力大小，在不损坏内衬管的前提下，维持其缩径状态。
(2)钢管出口处设有一个可调节导轮，通过液压杆调节导轮相对位置，进而控制钢索张紧程度，最终实现对轴向应力的控制。
(3)无线拉力传感器，外接显示装置，可以实时显示监测拉力大小，便于控制。
附图说明
图1为本发明内衬设备整体结构示意图；
图2为本发明内衬设备多级缩径模块结构示意图；
图3为本发明内衬设备牵引头剖面结构示意图；
图4为图1中A部分即本发明活动导轮支承结构俯视图；
图中：1、设备机架；2、多级缩径模块；21、正方形钢架；22、缩径滚轮；23、调距螺丝；3、卷扬机；4、牵引头；41、牵引外体；42、牵引内锥体；43、螺纹连接头；44、螺纹通孔；45、螺纹槽；5、牵引钢索；6、内衬管；7、钢管；8、活动导轮；9、防护罩；10、夹具；11、支撑件；12、滚轮；13、轴承；14、限位装置；15、限位螺母；16、液压杆。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
需要说明的是，本发明的说明书和权利要求书及上述附图中的术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
如图1所示，一种内衬过程对内衬芯管无损的内衬设备，包括设备机架1、多级缩径模块2、牵引装置、固定装置、导轮组以及防护罩9，内衬管6、多级缩径模块2以及钢管7的中心线在同一直线上，内衬管6两端连接牵引头4设置在设备机架的一端，多级缩径模块2设置在设备机架的中部位置，钢管7固定在固定装置上设置在设备机架的另一端，牵引钢索5通过各个导轮导向后穿过钢管和缩径模块连接在牵引头上，由卷扬机3提供牵引力带动内衬管完成内衬钢管操作。
其中，设备机架1，是用于承载设备的主体，整体为钢结构，由多个长方体结构的独立机架组成，各独立机架之间通过卡扣连接，每个独立机架底部设有滚轮12，方便机架移动，所述滚轮12设有抱死装置，选定位置后用于固定机架，防止滑动。
如图2所示，多级缩径模块2设置在设备机架1上，用于对内衬管6进行缩径，多级缩径模块2由三个独立缩径模块构成，每个缩径模块主体为正方形钢架21，上下左右四边各设有一个缩径滚轮22，缩径滚轮22可通过一个调距螺丝23调节相对位置，进而实现对缩径量的控制，所述三个独立缩径模块并列设置在设备机架1中部位置，根据内衬管尺寸 及缩径量要求，逐级递减，实现内衬管缩径。
牵引装置主体由卷扬机3、牵引头4和牵引钢索5构成，用于对所述内衬管6提供持续的牵引力，完成内衬钢管7的操作，牵引钢索缠绕在卷扬机3收线盘内，其收线方式并非一端固定，而是牵引钢索在收线盘缠绕一定圈数之后，两端钢索分别从左右两个方向伸出。此时，运转卷扬机后，一端钢索会收入卷扬机收线盘，另一边的钢索则会被引出收线盘。钢索经过设定在机架不同位置的导轮组之后，利用专用牵引头，与内衬芯管左右两端连接。头部位置的牵引头外侧还连接有一个无线拉力传感器，外接显示装置，可实时显示内衬过程中该段钢索的拉力大小。
如图3所示，其中的牵引头4包括牵引外体41、牵引内椎体42以及螺纹连接头43，所述牵引外体41为中空的锥形结构，内部具有与所述牵引内锥体42相配合的锥形内槽，牵引外体41的顶部中央具有螺纹通孔44，牵引内椎体42的顶部中央具有螺纹槽45，螺纹连接头43穿过螺纹通孔44与螺纹槽45连接。
固定装置设置在设备机架1上，用于对钢管7进行固定；固定装置由限位夹具10和一个支撑件11组成，本实施例中限位夹具10为两个，分别设置在钢管7两端，通过转动连接螺纹的把手实现开合，现有技术中具有锁合固定功能的夹具都可适用于本发明。支撑件11整体呈“Y”形，设置在两个限位夹具10中间，通过螺纹调节高度，用以支撑钢管。
参考图1和图4，所述导轮组，分别设置在机架各位置，引导牵引钢索5的传动，减少抖动，保持内衬过程的稳定，包括一个活动导轮8和若干固定导轮，所述活动导轮8设置在机架头部，钢管7出口位置处；活动导轮8固定在一根轴承13中部位置(该部分结构在图1中未画出，参照图4所示)，独立转动，不受轴承影响，轴承13两端分别插入一个“回”字型限位装置14，所述限位装置14设置在轴承钢架上，内外两端分别设有穿过轴承的限位螺母15，轴承13是圆形的，两端车有螺纹，连接时，从一端来看，先旋转进一个限位螺母，然后轴承插入“回”字型限位器中，在外侧再拧一颗限位螺母。以此进行限位，保证轴承只能前后在限位装置内运动。
所述轴承13双肩位置分别与两个液压杆16连接，液压杆下端固定在轴承钢架一端，通过液压装置提供动力，通过调节液压杆，实现活动导轮8位置的调节，通过调节活动导轮8相对位置，从而改变牵引钢索的张紧情况，进而控制作用在内衬管上轴向应力的大小。此处控制应力大小是为了维持内衬管的缩径状态，如果此时撤掉应力，则内衬管会瞬间回弹，无法衬入钢管；如果应力过大，超过该材料的屈服应力，则会导致内衬管发生塑性形变，无法回复原装。液压杆设置方向同钢索运动方向，功能为伸缩，效果是带动轴承前后运 动，调整钢索张紧度。
防护罩9，设置在钢管7的进出口两端，起保护作用，主体为钢结构，两侧分别设有一个由亚克力板构成的观察窗口，用以观察内衬情况。
本发明一种内衬过程对内衬芯管无损的内衬方法，采用上述内衬设备进行，包括如下步骤：
(1)选用合适长度的钢管7，将钢管7放在支撑件11上，并通过两端的夹具10将钢管固定；
(2)选择合适缩径量的缩径模块2，将选择好的缩径模块2安装在设备机架1上；
(3)将内衬管6两端固定连接在两侧的牵引头4上，具体在连接时，牵引外体41和牵引内锥体42之间存在间隙，内衬管6插入到该间隙中，螺纹连接头43穿过螺纹通孔44连接在螺纹槽45上，通过螺纹之间牵引力从而使的内衬管6紧密连接在牵引外体41和牵引内锥体42中，进而实现内衬管6与牵引头4的固定；
(4)卷扬机两端牵引钢索5分别从左右两个方向伸出，左端牵引钢索经过数个固定导轮转向后与左侧牵引头连接，右端牵引钢索经过数个滚轮转向后穿过铜管7、多级缩径模块2后与右侧牵引头连接，从而卷扬机3通过牵引钢索5将左右牵引头连接起来，从而对内衬管6形成牵引力；
(5)盖上防护罩，启动卷扬机9，牵引钢索5拉动牵引头向前移动，进而带动内衬管6移动，内衬管6通过缩径模块后发生缩径变形，逐步进入到钢管的内腔内；
(6)通过无线拉力传感器连接的显示装置，根据实时显示内衬管所受牵引力的大小，调节活动导轮部分的液压杆，实现导轮位置的调节，通过调节该活动导轮8相对位置，改变整条牵引钢索的张紧情况，进而控制作用在内衬管上轴向应力的大小；
(7)当内衬管两端全部牵引至钢管内部时，停止卷扬机运行，并收缩液压杆，放松钢索，释放作用在内衬管轴向上的应力，静置时间8h，待内衬管自然回弹之后，将其放置于80℃恒温烘箱，促使其二次回弹，回弹时间为8h，内衬管实现充分回弹，利用内衬管自身的回弹性，使穿衬于钢管内的内衬管紧紧地粘贴在钢管内壁上，即完成内衬塑料管的钢管制备。
本发明提供的一种内衬过程对内衬芯管无损的内衬设备及方法，利用牵引头，在缩径内衬全程与内衬管头尾两端连接，持续提供较为稳定的轴向应力。保证内衬芯管在完成缩径后，持续受到小于其屈服应力的较为稳定的轴向应力，维持缩径状态，防止发生回弹。此时内衬芯管外径小于钢管内径，可以极其顺利的衬入钢管内部，不会发生明显摩擦，可有效防止内衬芯管外表面磨损，进而导致复合管失效，本发明工艺操作方便快捷，效果好，适合 工业推广应用。

Claims (10)

  1. 一种内衬过程对内衬芯管无损的内衬设备，包括设备机架(1)、多级缩径模块(2)、牵引装置、固定装置、导轮组以及防护罩(9)，其特征在于：
    所述设备机架(1)，用于承载设备的主体；
    所述多级缩径模块(2)设置在设备机架(1)中部位置，用于对内衬管(6)进行缩径；
    所述牵引装置，主体由卷扬机(3)、牵引头(4)和牵引钢索(5)构成，用于对所述内衬管(6)提供持续稳定的轴向牵引力，完成内衬钢管(7)的操作；
    所述固定装置，设置在设备机架(1)上，用于对钢管(7)进行固定；
    所述导轮组，分别设置在设备机架不同位置，引导牵引钢索(5)的传动，减少抖动，保持内衬过程的稳定，包括一个活动导轮(8)和若干固定导轮，所述活动导轮(8)设置在钢管(7)出口位置处；
    所述防护罩(9)，设置在钢管(7)的进出口两端，起保护作用；
    所述内衬管(6)、多级缩径模块(2)以及钢管(7)的中心线在同一直线上，内衬管(6)两端连接牵引头(4)设置在设备机架的一端，多级缩径模块(2)设置在设备机架的中部位置，钢管(7)固定在固定装置上设置在设备机架的相对另一端，牵引钢索(5)连接卷扬机(3)通过各个导轮导向后穿过钢管(7)和多级缩径模块(2)连接在牵引头上，由卷扬机(3)提供牵引力带动内衬管完成内衬钢管操作。
  2. 根据权利要求1所述的一种内衬过程对内衬芯管无损的内衬设备，其特征在于，还包括一个无线拉力传感器，连接在靠近钢管一端牵引头外侧，无线拉力传感器外接显示装置，实时显示内衬过程中牵引钢索的轴向拉力大小。
  3. 根据权利要求1所述的一种内衬过程对内衬芯管无损的内衬设备，其特征在于，所述设备机架(1)整体为钢结构，由多个长方体结构的独立机架组成，各独立机架之间通过卡扣连接，每个独立机架底部设有滚轮(12)，方便机架移动，所述滚轮(12)设有抱死装置，选定位置后用于固定机架，防止滑动。
  4. 根据权利要求1所述的一种内衬过程对内衬芯管无损的内衬设备，其特征在于，所述多级缩径模块(2)由三个独立缩径模块构成，每个缩径模块主体为正方形钢架(21)，上下左右四边各设有一个缩径滚轮(22)，缩径滚轮(22)通过一个调距螺丝(23)调节相对位置，实现对缩径量的控制，所述三个独立缩径模块并列设置在设备机架(1)中部位置，根据内衬管尺寸及缩径量要求，逐级递减，实现内衬管缩径。
  5. 根据权利要求1所述的一种内衬过程对内衬芯管无损的内衬设备，其特征在于，牵引装置主体由卷扬机(3)、牵引头(4)和牵引钢索(5)构成，所述牵引钢索(5)缠绕在卷扬 机(3)收线盘内，牵引钢索(5)在收线盘缠绕一定圈数之后，两端牵引钢索(5)分别从左右两个方向伸出，牵引钢索经过设定在设备机架不同位置的导轮组之后，利用专用牵引头，与内衬芯管左右两端的牵引头连接。
  6. 根据权利要求5所述的一种内衬过程对内衬芯管无损的内衬设备，其特征在于，所述牵引头(4)包括牵引外体(41)、牵引内椎体(42)以及螺纹连接头(43)，所述牵引外体(41)为中空的锥形结构，内部具有与所述牵引内锥体(42)相配合的锥形内槽，牵引外体(41)的顶部中央具有螺纹通孔(44)，牵引内椎体(42)的顶部中央具有螺纹槽(45)，螺纹连接头(43)穿过螺纹通孔(44)与螺纹槽(45)连接。
  7. 根据权利要求1所述的一种内衬过程对内衬芯管无损的内衬设备，其特征在于，固定装置由限位夹具(10)和一个支撑件(11)组成，所述限位夹具(10)设置在钢管(7)两端，通过转动连接螺纹的把手实现开合，支撑件(11)整体呈“Y”形，设置在两个限位夹具(10)中间，通过螺纹调节高度，用以支撑钢管。
  8. 根据权利要求1所述的一种内衬过程对内衬芯管无损的内衬设备，其特征在于，所述活动导轮(8)固定在一根轴承(13)中部位置，独立转动，不受轴承影响，双肩位置分别与两个液压杆(16)连接，所述轴承(13)两端分别插入一个“回”字型限位装置(14)，所述限位装置(14)内外两端分别设有穿过轴承的限位螺母(15)，用以限制轴承(13)位置，保证液压杆(16)前后推动时，轴承(13)垂直于限位装置运动，通过调节液压杆，实现活动导轮(8)相对位置的调节，从而改变牵引钢索的张紧情况，进而控制作用在内衬管上轴向应力的大小。
  9. 根据权利要求1所述的一种内衬过程对内衬芯管无损的内衬设备，其特征在于，所述防护罩(9)分别设置在钢管(7)进出口位置，主体为钢结构，两侧分别设有一个由亚克力板构成的观察窗口，用以观察内衬情况。
  10. 一种内衬过程对内衬芯管无损的内衬方法，其特征在于，采用权利要求1-9任意一项所述的内衬设备进行，包括如下步骤：
    (1)选用合适长度的钢管(7)，将钢管(7)放在支撑件(11)上，并通过两端的夹具(10)将钢管固定；
    (2)选择合适缩径量的缩径模块(2)，将选择好的缩径模块(2)安装在设备机架(1)上；
    (3)将内衬管(6)两端固定连接在两侧的牵引头(4)上；
    (4)卷扬机(3)两端牵引钢索(5)分别从左右两个方向伸出，左端牵引钢索经过数个固 定导轮转向后与左侧牵引头连接，右端牵引钢索经过数个滚轮转向后穿过铜管(7)、多级缩径模块(2)后与右侧牵引头连接，卷扬机(3)通过牵引钢索(5)将左右牵引头(4)连接起来，从而对内衬管(6)形成持续稳定的轴向牵引力；
    (5)盖上防护罩，启动卷扬机(9)，牵引钢索(5)拉动牵引头向前移动，进而带动内衬管(6)移动，内衬管(6)通过缩径模块后发生缩径变形，逐步进入到钢管的内腔内；
    (6)通过无线拉力传感器连接的显示装置，根据实时显示内衬管所受牵引力的大小，调节活动导轮部分的液压杆，实现活动导轮位置的调节，通过调节该活动导轮(8)相对位置，改变整条牵引钢索的张紧情况，使得作用在内衬管轴向方向上的应力维持在材料屈服应力以内一个安全范围中，维持内衬管的缩径状态，进而控制作用在内衬管上轴向应力的大小；
    (7)当内衬管(6)两端全部牵引至钢管(7)内部时，停止卷扬机(3)运行，并收缩液压杆，放松钢索，释放作用在内衬管轴向上的应力，静置时间8h，待内衬管自然回弹之后，将其放置于80℃恒温烘箱，促使其二次回弹，回弹时间为8h，内衬管实现充分回弹，利用内衬管(6)自身的回弹性，使穿衬于钢管(7)内的内衬管紧紧地粘贴在钢管(7)内壁上，即完成内衬塑料管的钢管制备。
PCT/CN2021/120680 2021-08-11 2021-09-26 一种内衬过程对内衬芯管无损的内衬设备及方法 WO2023015686A1 (zh)

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