CN113074291A - Method for repairing pipe joint - Google Patents
Method for repairing pipe joint Download PDFInfo
- Publication number
- CN113074291A CN113074291A CN202010003303.4A CN202010003303A CN113074291A CN 113074291 A CN113074291 A CN 113074291A CN 202010003303 A CN202010003303 A CN 202010003303A CN 113074291 A CN113074291 A CN 113074291A
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- CN
- China
- Prior art keywords
- flange
- repairing
- flange plate
- pipe
- pipe joint
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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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
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
- F16L55/162—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe
- F16L55/165—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section
- F16L55/1658—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section the old pipe being ruptured prior to insertion of a new pipe
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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
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/028—Laying or reclaiming pipes on land, e.g. above the ground in the ground
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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
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/06—Accessories therefor, e.g. anchors
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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
- F16L23/00—Flanged joints
- F16L23/02—Flanged joints the flanges being connected by members tensioned axially
-
- 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
- F16L23/00—Flanged joints
- F16L23/02—Flanged joints the flanges being connected by members tensioned axially
- F16L23/032—Flanged joints the flanges being connected by members tensioned axially characterised by the shape or composition of the flanges
-
- 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
- F16L23/00—Flanged joints
- F16L23/16—Flanged joints characterised by the sealing means
- F16L23/18—Flanged joints characterised by the sealing means the sealing means being rings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pipe Accessories (AREA)
Abstract
A method of repairing a pipe joint, comprising the steps of: s1: digging an operation pit at a construction position; s2: partially cutting the original pipeline along the diameter direction of the original pipeline; s3: cutting off part of the original pipeline to form a fracture; s4: mounting a first flange on the complete part of the peripheral wall; s5: mounting a second flange and a first connecting piece on the end face of the incomplete part of the peripheral wall; s6: inserting a repair pipe in the original pipeline, and installing a joint at one end of the repair pipe; s7: providing a covering part, wherein a third flange plate and a second connecting piece are arranged on one end face of the covering part; s8: and mounting the covering part, so that the third flange plate is connected with the second connecting part, and the first connecting part is connected with the second connecting part. Compared with the prior art, the invention well solves the connection problem of new and old pipelines and is easy to construct.
Description
Technical Field
The invention relates to a method for repairing a pipe joint, and belongs to the technical field of pipeline repair.
Background
The existing pipeline repair belongs to relatively complex basic engineering. Generally, the pipes are usually buried under the ground, which causes some difficulty in repair. In addition, the repair of the pipe is generally performed for a portion of the problem, rather than replacing the entire length of pipe, which requires a solution to the problem of the connection between the new and old pipes.
Therefore, it is necessary to design a new method for repairing a pipe joint to solve the above technical problems.
Disclosure of Invention
The invention aims to provide a method for repairing a pipe joint, which is easy to construct.
In order to achieve the purpose, the invention adopts the following technical scheme: a method of repairing a pipe joint, comprising the steps of:
s1: digging an operation pit at a construction position to expose the original pipeline;
s2: cutting an original pipeline exposed in the operation pit along the diameter direction of the original pipeline to enable the original pipeline to comprise a cutting part and a remaining part;
s3: cutting off at least the rest part of the original pipeline to form a fracture, wherein the original pipeline comprises a peripheral wall complete part positioned on one side of the fracture and a peripheral wall incomplete part positioned on the other side of the fracture;
s4: mounting a first flange on the complete part of the peripheral wall;
s5: mounting a second flange on the end face of the incomplete part of the peripheral wall and mounting a first connecting piece on the outer wall of the incomplete part of the peripheral wall;
s6: inserting a repair pipe into the original pipeline, and installing a joint at one end of the repair pipe, wherein the joint is positioned in the fracture and comprises a first connecting part connected with the first flange and a second connecting part connected with the second flange;
s7: providing a covering part, wherein a third flange plate is arranged on one end face of the covering part, and a second connecting piece is arranged on the outer wall of the covering part;
s8: and mounting the covering part, so that the third flange plate is connected with the second connecting part, and the first connecting part is connected with the second connecting part.
As a further improvement of the present invention, in step S1, the outer wall of the original pipeline is completely exposed in the working pit.
As a further improved technical solution of the present invention, in step S2, the cutting portion is formed by cutting a half of the diameter of the original pipe.
As a further improved technical solution of the present invention, step S6 further includes a first gasket mounted between the first flange and the first connecting portion, and a second gasket mounted between the second flange and the second connecting portion; in step S8, the second gasket is also located between the third flange and the second connection portion.
As a further improved technical solution of the present invention, in step S2, the length of the discontinuity is the length of the joint + the thickness of the first gasket + the thickness of the second gasket +1 to 8 mm in step S6.
As a further improved technical solution of the present invention, in step S4, before the first flange plate is mounted, a step of grinding both sides of the fracture is further included.
As a further improved technical solution of the present invention, when the mounting position of the second flange is determined in step S5, the joint may be mounted in the fracture in advance, and the first connecting portion may be connected to the first flange; and determining the mounting position of the second flange plate according to the distance between the second flange plate and the second connecting part.
As a further improved aspect of the present invention, in step S5, after the previously installed joint is removed, the first connecting member is welded to the outer wall of the incomplete part of the peripheral wall.
As a further improved technical scheme of the invention, the second flange plate and the third flange plate are both half flange plates.
As a further improved technical solution of the present invention, in step S7, the covering part may adopt the cut part adjusted in length in step S2.
Compared with the prior art, the invention well solves the connection problem of new and old pipelines by arranging the first flange plate, the second flange plate, the third flange plate, the joint and the like, and is easy to construct.
Drawings
Fig. 1 to 15 are schematic views of the method for repairing a pipe joint of the present invention at each construction stage, in which:
FIG. 6 is an enlarged partial view of FIG. 5;
FIG. 8 is an enlarged partial view of FIG. 7;
FIG. 11 is an enlarged partial view of FIG. 10;
FIG. 13 is an enlarged partial view of FIG. 12;
fig. 15 is a partially enlarged view of fig. 14.
Detailed Description
Referring to fig. 1 to 15, the present invention discloses a method for repairing a pipe joint, which comprises the following steps:
s1: digging a working pit 1 at a construction position to expose the original pipeline 100;
s2: cutting an original pipe 100 exposed in the working pit 1 in a diameter direction thereof, so that the original pipe includes a cut portion 11 and a remaining portion 12;
s3: cutting at least part of the remaining part 12 to form a fracture 13, wherein the original pipeline 100 comprises a peripheral wall complete part 14 positioned on one side of the fracture 13 and a peripheral wall incomplete part 15 positioned on the other side of the fracture 13;
s4: a first flange 2 is mounted on the peripheral wall complete part 14;
s5: mounting a second flange 3 on the end face of the peripheral wall incomplete part 15 and mounting a first connecting piece 4 on the outer wall of the peripheral wall incomplete part 15;
s6: inserting a repair pipe 200 into the original pipeline 100, and installing a joint 300 at one end of the repair pipe 200, where the joint 300 is located in the fracture 13, and the joint 300 includes a first connection portion 301 connected to the first flange 2 and a second connection portion 302 connected to the second flange 3;
s7: providing a covering part 5, wherein a third flange plate 6 is arranged on one end face of the covering part 5, and a second connecting piece 7 is arranged on the outer wall of the covering part 5;
s8: the cover 5 is attached such that the third flange 6 is connected to the second connection portion 302 and the first connection member 4 is connected to the second connection member 7.
Specifically, referring to fig. 1, in step S1, the outer wall of the original pipe 100 is completely exposed in the work pit 1, that is, the original pipe 100 is suspended in the work pit 1. Of course, the size of the working pit 1 is determined according to the pipe diameter of the original pipeline 100.
In the illustrated embodiment of the present invention, the original conduit 100 is cylindrical. Referring to fig. 2, in step S2, the cutting part 11 is formed by cutting half of the diameter of the original pipe 100. The original pipeline 100 is cut according to a certain length, and at this time, the original pipeline 100 is not cut completely, and only half of the diameter of the original pipeline 100 is cut. In the illustrated embodiment of the invention, the cutting portion 11 is the upper half.
Referring to fig. 6, step S6 further includes a first gasket 8 installed between the first flange 2 and the first connection portion 301, and a second gasket 9 installed between the second flange 3 and the second connection portion 302; in step S8, the second gasket 9 is also located between the third flange 6 and the second connection portion 302.
In step S2, the length of the discontinuity is the length of the joint 300 + the thickness of the first gasket 8 + the thickness of the second gasket 9 +1 to 8 mm in step S6. Preferably, the length of the joint 300 + the thickness of the first gasket 8 + the thickness of the second gasket 9 +2 to 3 mm to more precisely control the mounting accuracy.
In step S4, before the first flange 2 is mounted, a step of grinding both sides of the fracture 13 is further included. Referring to fig. 4, in one embodiment of the present invention, the first flange 2 is welded to one end of the peripheral wall complete portion 14.
Referring to fig. 5 and 6, when the mounting position of the second flange 3 is determined in step S5, the joint 300 may be mounted in the fracture 13 in advance, and the first connection portion 301 may be connected to the first flange 2; the mounting position of the second flange 3 is determined according to the distance between the second flange 3 and the second connecting portion 302. It will be appreciated that the second flange 3 is a half flange. Preferably, the first gasket 8 is mounted between the first connection portion 301 and the first flange 2, and the first connection portion 301 and the first flange 2 are mounted to a degree that they are not loosened. After the installation, the second flange 3 is connected to the lower half of the joint 300, and a gap of 2 to 3 mm is reserved between the second flange 3 and the second connecting portion 302, so as to facilitate the assembly of the subsequent joint 300. In one embodiment of the invention, the second flange 3 is welded to the end face of the peripheral wall imperfection 15 after installation.
In step S5, after removing the pre-installed joint 300, the first connecting member 4 is welded to the outer wall of the peripheral wall non-integral portion 15 (see fig. 7 and 8).
In step S6, after inserting the repair tube 200, a length is reserved to install the joint 300. After the joint 300 and the repair tube 200 are assembled, the joint 300 is placed in the fracture 13, and the first connecting portion 301 is connected to the first flange 2 by bolts and nuts, and the second connecting portion 302 is connected to the second flange 3 by bolts and nuts.
It will be appreciated that the third flange 6 is also a half flange. The second flange plate 3 and the third flange plate 6 are spliced into a complete flange plate.
The cover 5 and the cutting portion 11 may be two different pieces. Preferably, in step S7, the cover 5 may adopt the cut part 11 adjusted in length in step S2 to save cost. Referring to fig. 12 and 13, one end of the cutting portion 11 cut previously is welded to the third flange 6, and the length is confirmed. At the time of the length confirmation, the excess portion can be cut off against the length confirmation marking line a of the cutting portion 11. Wherein the length confirmation identification line a is aligned with the right side of the remainder 12. The excess portion is cut off, and the position of the second link 7 is confirmed in comparison with the position of the first link 4.
In step S8, the first connector 4 and the second connector 7 are assembled by the screw 71, and after the screw 71 is tightened, the external corrosion prevention treatment is performed.
The above embodiments are only used for illustrating the present invention and not for limiting the technical solutions described in the present invention, and the understanding of the present specification should be based on the technical personnel in the technical field, such as the directional descriptions of "front", "back", "left", "right", "upper", "lower", etc., although the present specification has described the present invention in detail with reference to the above embodiments, the ordinary skilled in the art should understand that the technical personnel in the technical field can still make modifications or equivalent substitutions on the present invention, and all the technical solutions and modifications thereof without departing from the spirit and scope of the present invention should be covered in the claims of the present invention.
Claims (10)
1. A method of repairing a pipe joint, comprising the steps of:
s1: digging an operation pit (1) at a construction position to expose the original pipeline (100);
s2: cutting an original pipeline (100) exposed in the working pit (1) along the diameter direction of the original pipeline, so that the original pipeline (100) comprises a cutting part (11) and a residual part (12);
s3: -cutting at least the remaining part (12) of the section to form a break (13), the original pipe (100) comprising a peripheral wall finish (14) on one side of the break (13) and a peripheral wall non-finish (15) on the other side of the break (13);
s4: a first flange (2) is arranged on the complete part (14) of the peripheral wall;
s5: a second flange (3) is arranged on the end surface of the peripheral wall incomplete part (15) and a first connecting piece (4) is arranged on the outer wall of the peripheral wall incomplete part (15);
s6: inserting a repair pipe (200) into the original pipeline (100), and installing a joint (300) at one end of the repair pipe (200), wherein the joint (300) is located in the fracture (13), and the joint (300) comprises a first connecting part (301) connected with the first flange plate (2) and a second connecting part (302) connected with the second flange plate (3);
s7: providing a covering part (5), wherein a third flange plate (6) is arranged on one end face of the covering part (5), and a second connecting piece (7) is arranged on the outer wall of the covering part (5);
s8: and mounting the covering part (5), so that the third flange plate (6) is connected with the second connecting part (302), and the first connecting piece (4) is connected with the second connecting piece (7).
2. The method of repairing a pipe joint according to claim 1, wherein: in step S1, the outer wall of the existing pipe (100) is completely exposed in the work pit (1).
3. The method of repairing a pipe joint according to claim 1, wherein: in step S2, the cutting part (11) is formed by cutting half of the diameter of the original pipe (100).
4. The method of repairing a pipe joint according to claim 1, wherein: the step S6 further comprises a first sealing gasket (8) arranged between the first flange plate (2) and the first connecting part (301), and a second sealing gasket (9) arranged between the second flange plate (3) and the second connecting part (302); in step S8, the second gasket (9) is also located between the third flange (6) and the second connection (302).
5. The method of repairing a pipe joint according to claim 4, wherein: in step S2, the length of the discontinuity (13) is the length of the joint (300) in step S6 + the thickness of the first gasket (8 + the thickness of the second gasket (9) +1 to 8 mm.
6. The method of repairing a pipe joint according to claim 1, wherein: in step S4, before the first flange plate (2) is mounted, a step of grinding both sides of the fracture (13) is further included.
7. The method of repairing a pipe joint according to claim 1, wherein: when the mounting position of the second flange (3) is determined in step S5, the joint (300) may be mounted in the break (13) in advance, and the first connection portion (301) may be connected to the first flange (2); and determining the installation position of the second flange plate (3) according to the distance between the second flange plate (3) and the second connecting part (302).
8. The method of repairing a pipe joint according to claim 7, wherein: in step S5, after the previously installed joint (300) is removed, the first connecting piece (4) is welded to the outer wall of the peripheral wall incomplete part (15).
9. The method of repairing a pipe joint according to claim 1, wherein: the second flange plate (3) and the third flange plate (6) are both half flange plates.
10. The method of repairing a pipe joint according to claim 1, wherein: in step S7, the covering part (5) may adopt the cut part (11) adjusted in length in step S2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010003303.4A CN113074291A (en) | 2020-01-06 | 2020-01-06 | Method for repairing pipe joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010003303.4A CN113074291A (en) | 2020-01-06 | 2020-01-06 | Method for repairing pipe joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113074291A true CN113074291A (en) | 2021-07-06 |
Family
ID=76608715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010003303.4A Pending CN113074291A (en) | 2020-01-06 | 2020-01-06 | Method for repairing pipe joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113074291A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5207533A (en) * | 1990-02-01 | 1993-05-04 | Gaz De France | Process and device for replacing an underground pipe |
| CN2644844Y (en) * | 2003-08-21 | 2004-09-29 | 李崇荣 | Combination style three-way coupling pipe with two halves |
| JP2006083608A (en) * | 2004-09-16 | 2006-03-30 | Kanaflex Corporation | Method of repairing drain pipe |
| JP3129464U (en) * | 2006-12-01 | 2007-02-22 | 日本エア−テック株式会社 | Assembly structure of pipe connection end |
| CN201897025U (en) * | 2010-09-02 | 2011-07-13 | 杭州南方特种泵业股份有限公司 | Split flange |
| CN104405998A (en) * | 2014-10-16 | 2015-03-11 | 烟台中泰管业工程有限公司 | Repairing method for adding liner on underground pipe |
| WO2016162011A1 (en) * | 2015-04-10 | 2016-10-13 | Egeplast International Gmbh | Device for connecting a connection pipeline to a rehabilitated pipeline |
| CN107345601A (en) * | 2017-09-05 | 2017-11-14 | 深圳市巍特工程技术有限公司 | Pipeline configuration and water supply line restorative procedure |
| CN107940161A (en) * | 2017-10-09 | 2018-04-20 | 中国石油化工股份有限公司 | Pipe repairing method and pipeline for pipeline rehabilitation are met and discussed connection structure |
| KR20180125720A (en) * | 2017-05-16 | 2018-11-26 | 정호근 | Non-excavating repair method for water pipe |
| KR101935402B1 (en) * | 2018-03-08 | 2019-04-03 | 주식회사 삼명이엔씨 | Pipeline repairing method |
-
2020
- 2020-01-06 CN CN202010003303.4A patent/CN113074291A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5207533A (en) * | 1990-02-01 | 1993-05-04 | Gaz De France | Process and device for replacing an underground pipe |
| CN2644844Y (en) * | 2003-08-21 | 2004-09-29 | 李崇荣 | Combination style three-way coupling pipe with two halves |
| JP2006083608A (en) * | 2004-09-16 | 2006-03-30 | Kanaflex Corporation | Method of repairing drain pipe |
| JP3129464U (en) * | 2006-12-01 | 2007-02-22 | 日本エア−テック株式会社 | Assembly structure of pipe connection end |
| CN201897025U (en) * | 2010-09-02 | 2011-07-13 | 杭州南方特种泵业股份有限公司 | Split flange |
| CN104405998A (en) * | 2014-10-16 | 2015-03-11 | 烟台中泰管业工程有限公司 | Repairing method for adding liner on underground pipe |
| WO2016162011A1 (en) * | 2015-04-10 | 2016-10-13 | Egeplast International Gmbh | Device for connecting a connection pipeline to a rehabilitated pipeline |
| KR20180125720A (en) * | 2017-05-16 | 2018-11-26 | 정호근 | Non-excavating repair method for water pipe |
| CN107345601A (en) * | 2017-09-05 | 2017-11-14 | 深圳市巍特工程技术有限公司 | Pipeline configuration and water supply line restorative procedure |
| CN107940161A (en) * | 2017-10-09 | 2018-04-20 | 中国石油化工股份有限公司 | Pipe repairing method and pipeline for pipeline rehabilitation are met and discussed connection structure |
| KR101935402B1 (en) * | 2018-03-08 | 2019-04-03 | 주식회사 삼명이엔씨 | Pipeline repairing method |
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