CN112212074B - Large-diameter overlong HDPE pipeline closure method - Google Patents
Large-diameter overlong HDPE pipeline closure method Download PDFInfo
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- CN112212074B CN112212074B CN202011007088.1A CN202011007088A CN112212074B CN 112212074 B CN112212074 B CN 112212074B CN 202011007088 A CN202011007088 A CN 202011007088A CN 112212074 B CN112212074 B CN 112212074B
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- Prior art keywords
- pipe
- closure
- pipe section
- pipeline
- joint
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- 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
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/12—Laying or reclaiming pipes on or under water
- F16L1/20—Accessories therefor, e.g. floats, weights
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- 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
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/12—Laying or reclaiming pipes on or under water
- F16L1/123—Devices for the protection of pipes under water
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- 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
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/12—Laying or reclaiming pipes on or under water
- F16L1/20—Accessories therefor, e.g. floats, weights
- F16L1/235—Apparatus for controlling the pipe during laying
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- 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
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/12—Laying or reclaiming pipes on or under water
- F16L1/20—Accessories therefor, e.g. floats, weights
- F16L1/24—Floats; Weights
-
- 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
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/26—Repairing or joining pipes on or under water
Abstract
The invention discloses a large-diameter overlong HDPE pipeline closure method, which comprises the steps of welding a pipeline and an expansion joint on a construction platform, then launching the pipeline, and drawing and stretching the expansion joint to fit a pipe orifice through a chain block to complete pipeline closure installation.
Description
Technical Field
The invention relates to the field of port engineering, traffic engineering, hydraulic engineering and highway engineering, in particular to a closure method for a large-diameter and overlong HDPE pipeline.
Background
The high-density polyethylene pipe (HDPE pipe for short) is a novel green environment-friendly building material product, has the advantages of long service life, small fluid resistance, strong corrosion resistance and the like, and is widely applied to a plurality of fields of water supply and drainage systems, fuel gas conveying and the like.
In the application of the HDPE pipeline in water taking and drainage engineering, water in the closure section is transported out and serves as the last ring of pipeline construction, and the construction process and the construction quality of the water taking and drainage engineering have great influence on the whole project.
Disclosure of Invention
The invention aims to at least solve one of the technical problems in the prior art, and provides a large-diameter and ultra-long HDPE pipeline closure method, which can greatly save the construction cost.
According to a first aspect of the present invention, there is provided a method for pipe closure of large-diameter ultra-long HDPE pipes, comprising the steps of:
s1: welding a closure pipe section and an expansion joint on a construction platform, wherein a blind plate device is arranged at the end of the closure pipe section;
s2: adjusting the telescopic joint to the shortest state, adjusting the two pipe orifices to the same height after the pipe section is launched, disassembling the blind plate device, and symmetrically penetrating the threaded steel rod into the butt joint flange;
s3: using a hanging belt and a chain block to oppositely pull the flange plate of the expansion joint of the closure pipe section and the installed pipe section, and gradually elongating the expansion joint until the pipe orifice is attached;
s4: the flange plate continuously penetrates into the screw, the screw is continuously pulled and fastened, and a limit bolt of a sealing ring of the expansion joint is fastened to complete the butt joint of the pipelines;
s5: after the pipeline is settled for 24 hours, a diver fastens the screw underwater until the pipeline is qualified;
s6: and (3) installing a template by a diver underwater, and encapsulating the telescopic joint sealing ring limiting bolt concrete.
Has the advantages that: according to the method for closing the large-diameter and ultra-long HDPE pipelines, after the pipelines and the telescopic joints are welded on the construction platform, the pipelines are drained, the long telescopic joints are pulled by the chain block to be attached to the pipe orifices to complete pipeline closing installation, the pipe orifices can be accurately butted, the consistency and the attractiveness of pipeline materials and appearances are guaranteed, required manpower and material resources are less, the production cost is low, and the operability is high.
According to the method for closing the large-diameter ultra-long HDPE pipeline, the blind plate device is provided with an air valve and a water valve.
According to the method for closing the large-diameter and ultra-long HDPE pipe, in step S2, the pipes are floated by sequentially inflating the air bags, so that the pipe orifices can be adjusted to the same height.
According to the method for closing the large-diameter and ultra-long HDPE pipeline, in step S3, one side of the rope end of the chain block is hung on the sling of the telescopic joint flange, and the other side of the rope end of the chain block is hung on the ballast block of the installed pipe section.
According to the method for closing the large-diameter and ultra-long HDPE pipeline, in the step S4, in the process of fastening the screw rod, whether the pipe orifices are attached and whether wedge-shaped gaps exist are checked, and when the pipe orifices on two sides are completely attached, the limit bolts of the telescopic joint sealing rings are fastened.
According to the method for closing the large-diameter and ultra-long HDPE pipeline, in step S6, the concrete is made to encapsulate the limit bolt of the telescopic joint sealing ring by using a funnel feeding mode.
Drawings
The invention is further described below with reference to the accompanying drawings and examples;
FIG. 1 is a schematic diagram of the embodiment of the present invention after completion of closure;
FIG. 2 is a schematic view of an embodiment of the invention illustrating the installation of a telescopic joint;
FIG. 3 is a drawing illustration of a chain block extending expansion joint according to an embodiment of the present invention;
FIG. 4 is a perspective view of a steel tension rod fixing expansion joint according to an embodiment of the present invention;
FIG. 5 is a GRP screw fastening flange according to an embodiment of the present invention;
fig. 6 shows a concrete bag sealing limit bolt according to an embodiment of the invention.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Referring to fig. 1 to 6, according to a first aspect embodiment of the present invention, there is provided a large-diameter ultra-long HDPE pipeline closure method, including a closure pipe section 1, an installed pipe section 2, an expansion joint 3, a chain block 4, a sling 5, a ballast block 6, and a blind plate device, where a pipe head of the closure pipe section 11 is provided with the expansion joint 3 and the blind plate device, and the blind plate device is provided with a water valve and an air valve, including the following steps:
s1: welding a closure pipe section 1 and an expansion joint 3 on a construction platform, wherein a blind plate device is arranged at the end of the closure pipe section 1;
s2: adjusting the telescopic joint 3 to be in the shortest state, sequentially inflating the air bags to enable the pipeline to float upwards after the pipe section 1 is launched, adjusting the two pipe orifices to be at the same height by traction of a winch, disassembling a blind plate device, and fixing the telescopic joint 3 by enabling two section steels to penetrate through a nearest ballast block 6 and a flange 7 so as to prevent the telescopic joint 3 from being damaged due to bumping during launching;
s3: a hanging belt 5 and a chain block 4 are used for oppositely pulling a ring flange 7 of an expansion joint of a closure pipe section and an installed pipe section, one side of a rope head of the chain block 4 is hung on the hanging belt of the ring flange of the expansion joint 3, so that a steel chain of the chain block 4 is prevented from directly contacting with a pipeline and damaging the pipeline, the other side of the chain block is hung on a ballast block 6 of the installed pipe section 2, and the expansion joint 3 is gradually elongated until a pipe opening is attached;
s4: the flange 7 continuously penetrates into the GRP screw 8, the GRP screw 8 is continuously pulled and fastened, whether pipe orifices are attached or not and whether a wedge-shaped gap exists or not are detected in the process of fastening the GRP screw 8, when the pipe orifices on two sides are completely attached, the limit bolts of the sealing rings of the telescopic joints 3 are fastened, and the butt joint of pipelines is completed;
s5: after the pipeline is sunk for 24 hours, the diver fastens the GRP screw rod 8 underwater until the acceptance is qualified;
s6: a diver installs a template underwater, the telescopic joint 3 sealing ring limit bolt is encapsulated with concrete, and the telescopic joint 3 sealing ring limit bolt is encapsulated with concrete in a funnel blanking mode.
In some embodiments, in steps S2 and S3, after the calculation of the length of the gap of the pipeline closure pipe section 1 is completed, the pipeline and the telescopic joint 3 are welded on the construction platform according to the calculation result, so that the adjustable length of the telescopic joint 3 is ensured to meet the length of the gap of the closure pipe section 1.
More specifically, after the installed pipe section is launched, a steel wire rope of the winch penetrates through the clamps with the steering rollers on the two sides of the ballast block of the pipe head of the closure section, the rope ends of the steel wire rope are fixed on the clamps on the two sides of the ballast block of the installed pipe section, the pipe end is closed by pulling in the action direction of the winch, and the pipeline is fixed and is ensured to be straight. After two butt joint pipe orifices are adjusted to the same height through an air bag and a crawler crane, six finish rolling threaded steel pull rods are symmetrically penetrated into a butt joint flange plate 7, a pipe section flange plate and a land section pipeline are pulled oppositely by using a hanging belt 5 and a chain block 4, a telescopic joint 3 sealing ring fastening bolt is unscrewed, a diver fastens the block and the pull rods continuously, the telescopic joint 3 extends gradually, the pipe orifices are gradually attached, a GRP (glass-fiber reinforced plastic) screw rod penetrates, the GRP screw rod 8 is pulled continuously and fastened, the pipeline butt joint is completed, the gap between the flange plates 7 is checked, and after the GRP screw rod 8 is fastened completely, the telescopic joint 3 sealing ring bolts are fastened, so that the sealing rings are tightly attached to the pipeline to play a water stopping function, the air bags are released in sequence, and the final sinking of the pipeline is completed.
After the GRP screw rods 8 are connected and completely finished for 24 hours, a diver needs to perform underwater fastening for the second time, a 2mm feeler gauge is used for detecting a gap of a butt joint, if the gap is detected to be qualified, the pipeline butt joint construction is completely finished, and if the gap is detected to be unqualified, one round of screwing and detection is needed until the gap is detected to be qualified.
After all the GRP screws 8 are fastened and checked, a diver installs a template, and underwater concrete pouring is carried out by adopting a funnel blanking mode, and the limiting screw part of the telescopic joint 3 is encapsulated. According to the method for closing the large-diameter overlong HDPE pipeline, after the pipeline and the expansion joint 3 are welded on the construction platform, the length of the expansion joint 3 is adjusted by launching the pipeline to be installed to meet the length of the gap of the closed pipeline section 1, so that the pipe orifices on two sides are completely attached to complete installation, the method is less in needed manpower and material resources, the consistency and the attractiveness of the pipeline section material and appearance are guaranteed, the production cost is low, and the operability is high.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (6)
1. A large-diameter overlong HDPE pipeline closure method comprises a closure pipe section and an installed pipe section, and is characterized by comprising the following steps:
s1: welding a closure pipe section and an expansion joint on a construction platform, wherein a blind plate device is arranged at the end of the closure pipe section;
s2: adjusting the telescopic joint to the shortest state, adjusting the two pipe orifices to the same height after the pipe section is launched, disassembling the blind plate device, and symmetrically penetrating the threaded steel rod into the butt joint flange;
s3: using a hanging belt and a chain block to oppositely pull the flange plate of the expansion joint of the closure pipe section and the installed pipe section, and gradually elongating the expansion joint until the pipe orifice is attached;
s4: the flange plate continuously penetrates into the screw, the screw is continuously pulled and fastened, and a limit bolt of a sealing ring of the expansion joint is fastened to complete the butt joint of the pipelines;
s5: after the pipeline is settled for 24 hours, a diver fastens the screw underwater until the pipeline is qualified;
s6: and (3) installing a template by a diver underwater, and encapsulating the telescopic joint sealing ring limiting bolt concrete.
2. The large-diameter ultra-long HDPE pipe closure method according to claim 1, characterized in that: the blind plate device is provided with an air valve and a water valve.
3. The large-diameter ultra-long HDPE pipe closure method according to claim 1, characterized in that: in step S2, the tubes are floated by sequentially inflating the airbags, thereby achieving adjustment of the tube openings to the same height.
4. The large-diameter ultra-long HDPE pipe closure method according to claim 1, characterized in that: in step S3, one side of the rope end of the chain block is hung on the sling of the telescopic joint flange, and the other side is hung on the ballast block of the installed pipe section.
5. The large-diameter ultra-long HDPE pipe closure method according to claim 1, characterized in that: in step S4, in the process of fastening the screw, it is checked whether the pipe orifices are attached and whether a wedge gap exists, and when the pipe orifices on both sides are completely attached, the telescopic joint sealing ring limit bolt is fastened again at last.
6. The large-diameter ultra-long HDPE pipe closure method according to claim 1, characterized in that: in step S6, a funnel blanking method is used to encapsulate the telescopic joint sealing ring limit bolt with concrete.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011007088.1A CN112212074B (en) | 2020-09-23 | 2020-09-23 | Large-diameter overlong HDPE pipeline closure method |
| PCT/CN2020/125366 WO2022062068A1 (en) | 2020-09-23 | 2020-10-30 | Large-diameter ultra-long hdpe pipe closure method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011007088.1A CN112212074B (en) | 2020-09-23 | 2020-09-23 | Large-diameter overlong HDPE pipeline closure method |
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| Publication Number | Publication Date |
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| CN112212074A CN112212074A (en) | 2021-01-12 |
| CN112212074B true CN112212074B (en) | 2021-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011007088.1A Active CN112212074B (en) | 2020-09-23 | 2020-09-23 | Large-diameter overlong HDPE pipeline closure method |
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| Country | Link |
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| CN (1) | CN112212074B (en) |
| WO (1) | WO2022062068A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114322710B (en) * | 2021-12-07 | 2022-10-25 | 江苏华财管道有限公司 | Inner diameter inspection device of injection molding equipment for plastic pipeline production |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3795115A (en) * | 1972-09-05 | 1974-03-05 | Lockheed Petroleum Services | Method and apparatus for joining subsea pipelines |
| FR2475184A1 (en) * | 1980-02-05 | 1981-08-07 | Thome Paul | Repair of pipelines on sea-bed - where each end of replacement pipe is located inside chamber permitting welding at atmos. pressure |
| IT1277185B1 (en) * | 1995-03-23 | 1997-11-05 | Snam Progetti | METHOD FOR CONNECTING SUBMARINE PIPES PARTICULARLY SUITABLE FOR HIGH DEPTHS AND LARGE DIAMETERS |
| FR2888305B1 (en) * | 2005-07-11 | 2008-12-12 | Technip France Sa | METHOD AND INSTALLATION FOR CONNECTING A RIGID UNDERWATER DRIVE AND A FLEXIBLE SUBMARINE CONDUCT |
| JP2007092772A (en) * | 2005-09-27 | 2007-04-12 | Kajima Corp | Pipe line and construction method for pipe line |
| CN101968139B (en) * | 2009-11-13 | 2012-02-29 | 天津大学 | Submarine pipeline buckle arrestor with spiral side plates and fixing method thereof |
| CN102927363B (en) * | 2012-10-29 | 2014-09-24 | 中国华冶科工集团有限公司 | Construction method for extracting blind plate under coal gas |
| CN104989875A (en) * | 2015-05-19 | 2015-10-21 | 中国海洋石油总公司 | Submarine pipeline flange underwater abutting joint installation method |
| CN106120859B (en) * | 2016-07-02 | 2021-07-16 | 天鸿建设集团有限公司 | Construction method for river crossing by multi-pipe-section immersed tube |
| CN107166092B (en) * | 2017-06-23 | 2019-07-05 | 中交四航局第二工程有限公司 | A kind of pipeline underwater mating method |
| CN108050301B (en) * | 2017-11-01 | 2019-08-16 | 中交第四航务工程局有限公司 | A kind of great diameter and long HDPE pipeline immersing method |
| CN107676104A (en) * | 2017-11-03 | 2018-02-09 | 中交公路规划设计院有限公司 | Integrated immersed tube tube coupling and its installation method, the installation closure method of immersed tube tube coupling |
| CN108194732A (en) * | 2018-03-02 | 2018-06-22 | 无锡华毅管道有限公司 | Prestressed concrete cylinder pipe pipeline repairs spare gathering pipe |
| CN110726019A (en) * | 2019-10-15 | 2020-01-24 | 宁夏森源重工设备有限公司 | Driving type expansion joint and application thereof |
| CN111692429A (en) * | 2020-05-19 | 2020-09-22 | 中交第四航务工程局有限公司 | Underwater closure method for large-diameter HDPE (high-density polyethylene) pipeline |
-
2020
- 2020-09-23 CN CN202011007088.1A patent/CN112212074B/en active Active
- 2020-10-30 WO PCT/CN2020/125366 patent/WO2022062068A1/en active Application Filing
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| Publication number | Publication date |
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| CN112212074A (en) | 2021-01-12 |
| WO2022062068A1 (en) | 2022-03-31 |
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