WO2022062068A1 - 一种大直径超长hdpe管道合龙方法 - Google Patents

一种大直径超长hdpe管道合龙方法 Download PDF

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WO2022062068A1
WO2022062068A1 PCT/CN2020/125366 CN2020125366W WO2022062068A1 WO 2022062068 A1 WO2022062068 A1 WO 2022062068A1 CN 2020125366 W CN2020125366 W CN 2020125366W WO 2022062068 A1 WO2022062068 A1 WO 2022062068A1
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expansion joint
closing
pipe section
diameter
pipe
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PCT/CN2020/125366
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English (en)
French (fr)
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曾凡
刘凯
薛林虎
胡汉卿
许云飞
冯振周
吴凯
左华南
甘世行
黄梓雄
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中交第四航务工程局有限公司
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Publication of WO2022062068A1 publication Critical patent/WO2022062068A1/zh

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L1/00Laying or reclaiming pipes; Repairing or joining pipes on or under water
    • F16L1/12Laying or reclaiming pipes on or under water
    • F16L1/20Accessories therefor, e.g. floats, weights
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L1/00Laying or reclaiming pipes; Repairing or joining pipes on or under water
    • F16L1/12Laying or reclaiming pipes on or under water
    • F16L1/123Devices for the protection of pipes under water
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L1/00Laying or reclaiming pipes; Repairing or joining pipes on or under water
    • F16L1/12Laying or reclaiming pipes on or under water
    • F16L1/20Accessories therefor, e.g. floats, weights
    • F16L1/235Apparatus for controlling the pipe during laying
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L1/00Laying or reclaiming pipes; Repairing or joining pipes on or under water
    • F16L1/12Laying or reclaiming pipes on or under water
    • F16L1/20Accessories therefor, e.g. floats, weights
    • F16L1/24Floats; Weights
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L1/00Laying or reclaiming pipes; Repairing or joining pipes on or under water
    • F16L1/26Repairing or joining pipes on or under water

Definitions

  • the invention relates to the fields of port engineering, traffic engineering, water conservancy engineering and highway engineering, in particular to a method for closing a large-diameter and super-long HDPE pipeline.
  • HDPE pipe High-density polyethylene pipe
  • HDPE pipe is a new type of green environmental protection building material product. It has the advantages of long service life, low fluid resistance and strong corrosion resistance. It is widely used in water supply (diversion) systems, drainage systems and gas transmission. and many other fields.
  • the purpose of the present invention is to solve at least one of the technical problems existing in the prior art, and to provide a method for closing a large-diameter and ultra-long HDPE pipe, which can greatly save construction costs.
  • a method for closing a large-diameter and ultra-long HDPE pipeline which includes closing a pipe section and an installed pipe section, and includes the following steps:
  • the blind plate device is provided with an air valve and a water valve.
  • step S2 the pipeline is inflated sequentially through the airbags to make the pipeline float, so as to adjust the nozzle to the same height.
  • step S3 one side of the rope head of the chain hoist is hung on the sling of the expansion joint flange, and the other side is hung on the Install the pipe section on the ballast block.
  • step S4 in the process of tightening the screw, it is checked whether the nozzle is fitted and whether there is a wedge-shaped gap. Completely fit, and finally tighten the limit bolts of the expansion joint seal ring.
  • step S6 a hopper unloading method is used to encapsulate the limit bolts of the sealing ring of the expansion joint with concrete.
  • Fig. 1 is the schematic diagram after closing the dragon according to the embodiment of the present invention.
  • FIG. 2 is a schematic diagram of the installation of an expansion joint according to an embodiment of the present invention.
  • Fig. 3 is the chain hoist lengthening telescopic joint according to the embodiment of the present invention.
  • Fig. 4 is the steel tie rod fixed expansion joint according to the embodiment of the present invention.
  • Fig. 5 is the GRP screw tightening flange of the embodiment of the present invention.
  • FIG. 6 is a concrete bag sealing limit bolt according to an embodiment of the present invention.
  • the azimuth description such as the azimuth or position relationship indicated by up, down, front, rear, left, right, etc.
  • the azimuth description is based on the azimuth or position relationship shown in the drawings, only In order to facilitate the description of the present invention and simplify the description, it is not indicated or implied that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
  • the meaning of several is one or more, the meaning of multiple is two or more, greater than, less than, exceeding, etc. are understood as not including this number, above, below, within, etc. are understood as including this number. If it is described that the first and the second are only for the purpose of distinguishing technical features, it cannot be understood as indicating or implying relative importance, or indicating the number of the indicated technical features or the order of the indicated technical features. relation.
  • a method for closing a large-diameter and ultra-long HDPE pipe including a closing pipe section 1 , an installed pipe section 2 , an expansion joint 3 , a chain hoist 4 , and a sling 5 , ballast block 6 and blind plate device, the pipe head of the closing pipe section 11 is provided with an expansion joint 3 and a blind plate device, and the blind plate device is provided with a water valve and an air valve, including the following steps:
  • steps S2 and S3 after the calculation of the gap length of the closed pipe section 1 of the pipeline is completed, the welding of the pipeline and the expansion joint 3 is completed on the construction platform according to the calculation result, so as to ensure that the adjustable length of the expansion joint 3 meets the closed length. Gap length of pipe segment 1.
  • the wire rope of the hoist passes through the clamps with steering rollers on both sides of the ballast block of the closed section pipe head, and the rope head of the wire rope is fixed on the clamps on both sides of the ballast block of the installed pipe section. Pull and close the pipe ends in the direction of action, fix the pipe and ensure that the pipe is straight.
  • the butt flange 7 is symmetrically penetrated into the six finishing threaded steel tie rods, and the sling 5 and the chain hoist 4 are used to connect the flange of the Helong pipe section to the land section.
  • the diver installs the formwork, pours concrete underwater using the hopper blanking method, and encapsulates the limit screw part of the expansion joint 3.
  • this method of closing the large-diameter and ultra-long HDPE pipeline after the welding of the pipeline and the expansion joint 3 is completed on the construction platform, the length of the expansion joint 3 to be installed is adjusted to meet the gap length of the closing pipe section 1, so that the nozzles on both sides are completely fitted to complete the installation.
  • the method requires less manpower and material resources, ensures the consistency and aesthetics of the material and shape of the pipe section, has low production cost and high operability.

Abstract

一种大直径超长HDPE管道合龙方法,在施工平台完成管道和伸缩节的焊接后,进而管道下水,通过手拉葫芦牵引拉长伸缩节至管口贴合完成管道合龙安装,该方法能精确对接管口,并且保证了管道材料以及外形的一致性和美观,并且所需人力和物力较少,保证了生产成本小、可操作性高。

Description

一种大直径超长HDPE管道合龙方法 技术领域
本发明涉及港口工程、交通工程、水利工程、公路工程领域,特别涉及一种大直径超长HDPE管道合龙方法。
背景技术
高密度聚乙烯管(以下简称HDPE管)是新型绿色环保建材产品,具有使用寿命长、流体阻力小和耐腐性能强等优点,被广泛应用于给(引)水系统、排水系统和燃气输送等多个领域。
在HDPE管道的取排水工程应用中,合龙段出运下水作为管道施工的最后一环,其施工工艺和施工质量对整个项目影响重大。
发明内容
本发明的目的在于至少解决现有技术中存在的技术问题之一,提供一种大直径超长HDPE管道合龙方法,能够大幅节约施工成本。
根据本发明的第一方面实施例,提供一种大直径超长HDPE管道合龙方法,包括合龙管段、已安装管段,包括以下步骤:
S1:在施工平台焊接合龙管段和伸缩节,在合龙管段端头设置有盲板装置;
S2:调节所述伸缩节至最短状态,合龙管段下水后,将两个管口调节至相同高度,拆卸盲板装置,对接法兰盘对称穿入螺纹钢杆;
S3:使用吊带和手拉葫芦将合龙管段伸缩节法兰盘与已安装管段对拉,伸缩节逐渐拉长至管口贴合;
S4:法兰盘继续穿入螺杆,持续拉合并紧固螺杆,紧固伸缩节密封圈限位螺栓,完成管道对接;
S5:完成管道沉放24小时后,潜水员水下紧固螺杆,直至验收合格;
S6:潜水员水下安装模板,将伸缩节密封圈限位螺栓混凝土包封。
有益效果:此大直径超长HDPE管道合龙方法,在施工平台完成管道和伸缩节的焊接后,进而管道下水,通过手拉葫芦牵引拉长伸缩节至管口贴合完成管道合龙安装,该方法能精确对接管口,并且保证了管道材料以及外形的一致性和美观,并且所需人力和物力较少,保证了生产成本小、可操作性高。
根据本发明第一方面实施例所述的大直径超长HDPE管道合龙方法,所述盲板装置设有气阀和水阀。
根据本发明第一方面实施例所述的大直径超长HDPE管道合龙方法,在步骤S2中,通过气囊顺序充气使管道上浮,从而实现调节管口至相同高度。
根据本发明第一方面实施例所述的大直径超长HDPE管道合龙方法,在步骤S3中,手拉葫芦的绳头一侧挂在伸缩节法兰盘的吊带上,另一侧挂在已安装管段的压载块上。
根据本发明第一方面实施例所述的大直径超长HDPE管道合龙方法,在步骤S4中,在紧固螺杆的过程中,检验管口是否贴合以及是否存在楔形缝隙,当两侧管口完全贴合,最后再紧固伸缩节密封圈限位螺栓。
根据本发明第一方面实施例所述的大直径超长HDPE管道合龙方法,在步骤S6中,采用漏斗下料方式使混凝土包封伸缩节密封圈限位螺栓。
附图说明
下面结合附图和实施例对本发明进一步地说明;
图1为本发明实施例合龙完成后示意图;
图2为本发明实施例伸缩节安装示意图;
图3为本发明实施例手拉葫芦拉长伸缩节;
图4为本发明实施例钢拉杆固定伸缩节;
图5为本发明实施例GRP螺杆紧固法兰盘;
图6为本发明实施例混凝土包密封限位螺栓。
具体实施方式
本部分将详细描述本发明的具体实施例,本发明之较佳实施例在附图中示出,附图的作用在于用图形补充说明书文字部分的描述,使人能够直观地、形象地理解本发明的每个技术特征和整体技术方案,但其不能理解为对本发明保护范围的限制。
在本发明的描述中,需要理解的是,涉及到方位描述,例如上、下、前、后、左、右等指示的方位或位置关系为基于附图所示的方位或位置关系,仅是为了便于描述本发明和简化描述,而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作,因此不能理解为对本发明的限制。
在本发明的描述中,若干的含义是一个或者多个,多个的含义是两个以上,大于、小于、超过等理解为不包括本数,以上、以下、以内等理解为包括本数。如果有描述到第一、第二只是用于区分技术特征为目的,而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量或者隐含指明所指示的技术特征的先后关系。
本发明的描述中,除非另有明确的限定,设置、安装、连接等词语应做广义理解,所属技术领域技术人员可以结合技术方案的具体内容合理确定上述词语在本发明中的具体含义。
参照图1至图6,根据本发明的第一方面实施例,提供一种大直径超长HDPE管道合龙方法,包括合龙管段1、已安装管段2、伸缩节3、手拉葫芦4、吊带5、压载块6以及盲板装置,合龙管段11的管头设有伸缩节3和盲板装置,盲板装置设有水阀和气阀,包括以下步骤:
S1:在施工平台焊接合龙管段1和伸缩节3,在合龙管段1端头设置有盲板装置;
S2:调节伸缩节3至最短状态,合龙管段1下水后,通过气囊顺序充气使管道上浮,并通过卷扬机牵引从而将两个管口调节至相同高度,拆卸盲板装置,用 两根型钢穿过最近的压载块6和法兰盘7,固定好伸缩节3部分,不至于伸缩节3在下水时颠簸出现损坏;
S3:使用吊带5和手拉葫芦4将合龙管段伸缩节法兰盘7与已安装管段对拉,手拉葫芦4的绳头一侧挂在伸缩节3法兰盘的吊带上,防止手拉葫芦4的钢链条直接与管道接触,损伤管道,另一侧挂在已安装管段2的压载块6上,伸缩节3逐渐拉长至管口贴合;
S4:法兰盘7继续穿入GRP螺杆8,持续拉合并紧固GRP螺杆8,在紧固GRP螺杆8的过程中,检验管口是否贴合以及是否存在楔形缝隙,当两侧管口完全贴合,最后再紧固伸缩节3密封圈限位螺栓,紧固伸缩节3密封圈限位螺栓,完成管道对接;
S5:完成管道沉放24小时后,潜水员水下紧固GRP螺杆8,直至验收合格;
S6:潜水员水下安装模板,将伸缩节3密封圈限位螺栓混凝土包封,采用漏斗下料方式使混凝土包封伸缩节3密封圈限位螺栓。
在其中的一些实施例中,在步骤S2和S3中,在完成计算管道合龙管段1缺口长度后,根据计算结果在施工平台完成管道与伸缩节3的焊接,保证伸缩节3可调节长度满足合龙管段1的缺口长度。
更具体的是,待安装管段下水后,卷扬机钢丝绳穿过合龙段管头压载块两侧带转向滚轮的夹具,钢丝绳的绳头固定在已安装管段压载块两侧夹具上,通过卷扬机的作用方向拉合管端,固定管道并保证管道顺直。通过气囊和履带吊将两个对接管口调节至相同高度后,对接法兰盘7对称穿入六根精轧螺纹钢拉杆,并使用吊带5和手拉葫芦4将合龙管段法兰盘与陆上段管道对拉,拧开伸缩节3密封圈紧固螺栓,潜水员通过不断收紧葫芦和拉杆,伸缩节3逐渐伸长,管口逐渐贴合,穿入GRP螺杆,继续拉合并紧固GRP螺杆8,完成管道对接,检查法兰盘7间无间隙,且GRP螺杆8全部紧固后,紧固伸缩节3密封圈螺栓,使密封圈紧贴管道发挥止水作用,并按照顺序释放气囊,完成管道的最终沉放。
GRP螺杆8连接全部完成24小时后,潜水员需要进行第二次水下紧固,并 使用2mm塞尺检测对接头缝隙,如果检测合格,则管道对接施工全部完成,如果检测不合格,需再进行一轮拧紧、检测,直至检测合格。
所有GRP螺杆8紧固验收完成后,潜水员安装模板,采用漏斗下料方式进行水下浇筑混凝土,将伸缩节3限位螺杆部位包封。此大直径超长HDPE管道合龙方法,在施工平台完成管道和伸缩节3的焊接后,待安装管道下水调节伸缩节3长度满足合龙管段1缺口长度,使两侧管口完全贴合完成安装,该方法所需人力和物力较少,保证了管段材料和外形的一致性和美观性,生产成本小、可操作性高。
上面结合附图对本发明实施例作了详细说明,但是本发明不限于上述实施例,在所述技术领域普通技术人员所具备的知识范围内,还可以在不脱离本发明宗旨的前提下作出各种变化。

Claims (6)

  1. 一种大直径超长HDPE管道合龙方法,包括合龙管段、已安装管段,其特征在于,包括以下步骤:
    S1:在施工平台焊接合龙管段和伸缩节,在合龙管段端头设置有盲板装置;
    S2:调节所述伸缩节至最短状态,合龙管段下水后,将两个管口调节至相同高度,拆卸盲板装置,对接法兰盘对称穿入螺纹钢杆;
    S3:使用吊带和手拉葫芦将合龙管段伸缩节法兰盘与已安装管段对拉,伸缩节逐渐拉长至管口贴合;
    S4:法兰盘继续穿入螺杆,持续拉合并紧固螺杆,紧固伸缩节密封圈限位螺栓,完成管道对接;
    S5:完成管道沉放24小时后,潜水员水下紧固螺杆,直至验收合格;
    S6:潜水员水下安装模板,将伸缩节密封圈限位螺栓混凝土包封。
  2. 根据权利要求1所述的大直径超长HDPE管道合龙方法,其特征在于:所述盲板装置设有气阀和水阀。
  3. 根据权利要求1所述的大直径超长HDPE管道合龙方法,其特征在于:在步骤S2中,通过气囊顺序充气使管道上浮,从而实现调节管口至相同高度。
  4. 根据权利要求1所述的大直径超长HDPE管道合龙方法,其特征在于:在步骤S3中,手拉葫芦的绳头一侧挂在伸缩节法兰盘的吊带上,另一侧挂在已安装管段的压载块上。
  5. 根据权利要求1所述的大直径超长HDPE管道合龙方法,其特征在于:在步骤S4中,在紧固螺杆的过程中,检验管口是否贴合以及是否存在楔形缝隙,当两侧管口完全贴合,最后再紧固伸缩节密封圈限位螺栓。
  6. 根据权利要求1所述的大直径超长HDPE管道合龙方法,其特征在于:在步骤S6中,采用漏斗下料方式使混凝土包封伸缩节密封圈限位螺栓。
PCT/CN2020/125366 2020-09-23 2020-10-30 一种大直径超长hdpe管道合龙方法 WO2022062068A1 (zh)

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