A pipeline renewal boring machine and its construction method

A technology of roadheader and pipeline, which is applied in the field of pipeline renewal roadheader and its construction, and can solve the problems of difficulty in cleaning fluid medium, elevation, interruption of operation and dredging of small pipeline lines, etc.

Active Publication Date: 2021-11-19
CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

Moreover, the update of small pipelines will also interrupt the operation of pipeline lines. Even the latest foreign patented technologies (such as the patented technical solutions with application numbers JPA 2014185492 and JPA 2015059417) must intercept the updated section and use auxiliary bypass Pass
In addition, the internal environment of the underground pipeline is complex, and the settlement of the fluid medium circulation throughout the year has brought about sludge residues that raise the water level inside the pipeline, making it difficult to clean and maintain the fluid medium inside the pipeline. How to ensure the fluid medium inside the old pipeline It is a major challenge for current trenchless pipeline renewal technology to completely clean it up and make it have a good pass-through function during the pipeline renewal process

Method used

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  • A pipeline renewal boring machine and its construction method
  • A pipeline renewal boring machine and its construction method
  • A pipeline renewal boring machine and its construction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 5

[0086] Embodiment 5: A kind of slag clearing device used for pipeline renewal roadheader, such as Figure 7~10 As shown, it includes a dredging head 11 and a power transmission shaft tube 12, the front end of the power transmission shaft tube 12 is connected with the dredging head 11, and the rear end of the power transmission shaft tube 12 is connected with the digging cutter head 5 of the tunneling main engine 2 .

[0087] Such as Figure 13 As shown, the dredging head 11 includes a leading cutter head 11-1, and the leading cutter head 11-1 includes at least two knife beams 11-1-1 arranged at equal angles, and three or more knife beams can be set as required. 4 or more, the cutter beam 11-1-1 is evenly distributed with cutters 11-1-2, the cutters can be cutters or scrapers, and the middle part of the cutter beam can be provided with a fishtail knife to improve the dredging ability. A drive shaft tube 11-2 is provided on the back side of the leading cutter head 11-1, and at...

Embodiment 6

[0090] Embodiment 6: A kind of slag-removing and ensuring-passing device for pipeline renewal roadheader, such as Figure 11 , 12 As shown, two pigs 11-3 are fixed on the drive shaft tube 11-2, the drive shaft tube 11-2 and the pigs 11-3 are coaxially arranged, and the two adjacent pigs 11-3 3 are connected by a support sleeve 11-6, and a filter plate 11-7 is provided at the front end of the pig 11-3 near the leading cutter head 11-1 to filter out larger foreign matters in the sewage. On the one hand, the filter plate and the pipe pig can isolate the sewage, prevent the surrounding soil from being polluted, and achieve the effect of sealing and isolating the second mud tank on the rear side of the pipe pig; The sewage can completely enter the internal hollow drive shaft tube from the leading cutter head at the front end of the pig, and then enter the protection circulation system through the power transmission shaft tube for sewage circulation. The power transmission shaft t...

Embodiment 7

[0093] Embodiment 7: A kind of slag clearing device used for pipeline renewal roadheader, such as Figure 14 , 15 As shown, the dredging head 11 includes a central axis tube 11-2a, and the central axis tube is hollow. The front end of the central axis pipe 11-2a is provided with a conical grille head 11-1a. The conical grille head 11-1a can not only carry out drilling and dredging of the silt, but also allow the sewage to enter the central shaft through the conical grille. Tube. Two pigs 11-3 are fixed on the central axis pipe 11-2a, the central axis pipe 11-2a and the pipe pigs 11-3 are arranged on the same axis, and pass between two adjacent pipe pigs 11-3 The support sleeve 11-6 is connected, and the front end of the pipe cleaner 11-3 near the conical grid head 11-1a is provided with a wire brush 11-7a; the wire brush and the rubber cup of the pipe cleaner can not only realize auxiliary sewage discharge function, and achieve a closed and isolated effect on the excavation...

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Abstract

The invention discloses a tunneling machine for updating pipelines and a construction method thereof. It comprises a tunneling main engine and a ventilation protection circulation system. A slag cleaning and ventilation device is provided at the front of the tunneling main engine. system is connected. The excavation host includes a shield body and a digging cutter head, a main drive is arranged in the shield body, the main drive is connected with the digging cutter head, an excavation cabin is arranged between the digging cutter head and the main drive, and an excavation cabin is arranged on the upper part of the excavation cabin. There is a slurry inlet pipe, and a slag discharge system is connected to the lower part of the excavation cabin. The slag removal device of the present invention passes through the tunneling main engine and is connected with the ventilation circulation system. During the excavation process, it goes ahead of the cutter head of the tunneling main engine to desilt the silt in the pipeline, and the sewage in the pipeline flows backward through the ventilation circulation system. Circulation, to ensure the circulation of the fluid medium in the pipeline to be renewed during the construction process, so that the pipeline renewal has the ability to ensure flow without closure, and realize the simultaneous completion of pipeline demolition and renewal laying.

Description

technical field [0001] The invention relates to the technical field of pipeline renewal, in particular to a pipeline renewal roadheader and a construction method thereof. Background technique [0002] With the development of urbanization, the old urban pipe network is not only facing years of damage, but also faces the problem that the original pipe diameter is too small to meet the requirements of urban underground pipes. Therefore, there is a significant need for pipeline renewal technology. [0003] Pipeline repair and renewal technologies are mainly divided into two categories: open cut method and trenchless technology. With the rapid development of the city, the open and cut method has been difficult to meet the complex requirements of the urban core area. In the 1980s, Europe took the lead in carrying out relevant research on trenchless technology, and my country has gradually carried out research in this field in recent years. As research progresses, trenchless pip...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/087E21D11/08E21D9/06E21D9/093E21D9/12
CPCE21D9/0873E21D11/08E21D9/12E21D9/0621E21D9/093E21B7/30E21D9/06
Inventor 贾连辉薛广记谭顺辉范磊王杜娟冯琳龚廷民苏明浩于少辉李光叶蕾冯战勇
Owner CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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