CN102192383B - Online repair method for asbestos type expansion joint of pipeline - Google Patents
Online repair method for asbestos type expansion joint of pipeline Download PDFInfo
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- CN102192383B CN102192383B CN2010101154687A CN201010115468A CN102192383B CN 102192383 B CN102192383 B CN 102192383B CN 2010101154687 A CN2010101154687 A CN 2010101154687A CN 201010115468 A CN201010115468 A CN 201010115468A CN 102192383 B CN102192383 B CN 102192383B
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- fiber cloth
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Abstract
The invention discloses an online repair method for an asbestos type expansion joint of a pipeline, and the method comprises the following steps: firstly, manufacturing two bracket disks, wherein the centers of the bracket disks are provided with through holes and the outer rings of the bracket disks are provided with shoulders; respectively welding the bracket disks at the outer rings of two flanges which are connected with the two ends of the expansion joint; welding a first press plate which is provided with screw holes at intervals between the two ends of the two bracket disks; screwing bolts into the screw holes; wrapping a nickel-chromium ceramic fiber cloth at the outer rings of the two bracket disks and overlapping; coating the overlapped position with a sealant and positioning on the first press plate; pressing a second press plate which is provided with through holes at intervals on the first press plate; ensuring the bolts on the first press plate to penetrate through the overlapped position of the nickel-chromium ceramic fiber cloth and the through holes of the second press plate and screwing down by utilizing nuts; and arranging two cushion blocks respectively at the shoulders of the two bracket disks and tightly pressing the cushion blocks, the nickel-chromium ceramic fiber cloth and the shoulders of the bracket disks by virtue of bolts. In the method disclosed by the invention, online repair is carried out on the expansion joint of the pipeline, and the pipeline is prevented from being damaged because of expansion with heat and contraction with cold; and the method has the advantages of simplicity and convenience in construction and low cost, and guarantees the continuous delivery of a pipeline medium, thereby guaranteeing normal production.
Description
Technical field
The present invention relates to a kind of online restorative procedure of pipeline asbestos type slip joint.
Background technique
For avoiding long-distance pipe owing to expanding with heat and contract with cold caused damage, pipeline is provided with the asbestos type slip joint that connects through flange usually, and slip joint stretches or shrinks with high temperature or low temperature, has guaranteed the intact of pipeline.Because most of pipeline is arranged at the field, the nonmetal asbestos cloth of slip joint is damaged with natural aging by long-term high temperature Exposure to Sunlight, causes the slip joint inefficacy, possibly cause the reduction of seal for pipe joints performance; Usually after slip joint damages, adopt new product to change, the operation of need breaking during replacing, cause pipeline stop fail, influenced normal production; Usually the new product of changing simultaneously can adopt bellows slip joint or carbon steel inside and outside sleeve type slip joint; But bellows slip joint cost is high, will greatly improve maintenance cost, and carbon steel inside and outside sleeve type slip joint weight is big; Change constructional difficulties, need adopt the loop wheel machine construction for large-scale pipeline.Change new product and all need the pipeline shutdown operation, obviously can't change the new product slip joint for the pipeline that does not allow to stop failing.
Summary of the invention
Technical problem to be solved by this invention provides a kind of online restorative procedure of pipeline asbestos type slip joint; This method can online pipe-repairing asbestos type slip joint, the damage of having avoided pipeline to be expanded with heat and contract with cold, its easy construction; With low cost, guaranteed the sealability and the ordinary production of pipeline.
For solving the problems of the technologies described above, the online restorative procedure of pipeline asbestos type slip joint of the present invention comprises two flange plate that connect asbestos type slip joint two ends, and this method comprises the steps:
Step 1, two tray decks of making; Said tray deck center has the through hole with said flange plate outer ring coupling; Said tray deck outer ring is provided with shoulder; Export-oriented respectively the stretching, extension also of said tray deck shoulder vertically is provided with screw, and said two tray deck central through bores are welded in said two flange plate outer ring respectively;
Step 2, between two tray deck tops the welding first pressing plate, said first pressing plate has some screws at interval, is screwed into bolt in some screws of said first pressing plate;
Step 3, with the nickel chromium triangle ceramic fiber cloth be wrapped in said two tray deck outer rings and the overlap joint; The lap-joint of nickel chromium triangle ceramic fiber cloth applies sealer; Shoulder and lap-joint that nickel chromium triangle ceramic fiber cloth two ends are positioned at said two tray decks are positioned on said first pressing plate; Adopt second pressing plate to be pressed on said nickel chromium triangle ceramic fiber cloth lap-joint outer surface; Said second pressing plate has some through holes at interval and matees with the said first pressing plate lead to the hole site, and the bolt of twisting on first pressing plate passes the through hole of the said nickel chromium triangle ceramic fiber cloth and second pressing plate and passes through nut screwing clamping;
Step 4, two cushion blocks that will be provided with through hole are located at the shoulder of said two tray decks respectively and are positioned at the outer surface of said nickel chromium triangle ceramic fiber cloth lap-joint, and the through hole and the nickel chromium triangle ceramic fiber cloth that adopt bolt to pass said cushion block are twisted in the screw of said tray deck shoulder.
For guaranteeing that the pipeline expansion joint after the reparation has the better seal performance, the bolt between above-mentioned first pressing plate and second pressing plate and said cushion block and the tray deck shoulder is tightened after applying sealer.
Because the online restorative procedure of pipeline asbestos type slip joint of the present invention has adopted technique scheme; Promptly make two centers and have the tray deck that through hole, outer ring are provided with shoulder; Two tray decks are located at two flange plate outer ring that connect asbestos type slip joint two ends respectively through welding; Be welded with first pressing plate that has screw at interval between two tray deck tops; Be screwed into bolt in the screw; The nickel chromium triangle ceramic fiber cloth is wrapped in two tray deck outer ring overlap joints and is positioned at two tray deck shoulders, and lap-joint applies sealer and is positioned on first pressing plate, is pressed with second pressing plate that has through hole at interval on first pressing plate; Bolt on first pressing plate passes the nickel chromium triangle ceramic fiber cloth and the second pressing plate through hole and adopts nut screwing clamping, and two cushion blocks are located at the shoulder of two tray decks respectively and are compressed cushion block, nickel chromium triangle ceramic fiber cloth and tray deck shoulder through bolt; This method can online pipe-repairing asbestos type slip joint, having avoided changing again cost that slip joint causes increases and has reduced to produce and shut down, its easy construction is with low cost, has guaranteed ordinary production.
Description of drawings
Below in conjunction with accompanying drawing and mode of execution the present invention is done further detailed description:
Fig. 1 is the schematic representation of the online restorative procedure of pipeline asbestos type slip joint of the present invention.
Embodiment
As shown in Figure 1, diagram is the top schematic representation behind the slip joint longitudinally cutting, and the online restorative procedure of pipeline asbestos type slip joint of the present invention comprises two flange plate 8 that connect asbestos type slip joint 9 two ends, and this method comprises the steps:
Step 1, two tray decks 1 of making; Said tray deck 1 center has the through hole with said flange plate 8 outer rings coupling; Said tray deck 1 outer ring is provided with shoulder 11; Said tray deck shoulder 11 outwards stretches respectively and vertically is provided with screw, and said two tray deck 1 central through bores are welded in said two flange plate 8 outer rings respectively;
Step 2, between two tray deck 1 tops welding first pressing plate 2, said first pressing plate 2 has some screws at interval, is screwed into bolt 7 in some screws of said first pressing plate 2;
Step 3, with nickel chromium triangle ceramic fiber cloth 4 be wrapped in said two tray deck 1 outer rings and the overlap joint; The lap-joint of nickel chromium triangle ceramic fiber cloth 4 applies sealer; Shoulder 11 and lap-joint that nickel chromium triangle ceramic fiber cloth 4 two ends are positioned at said two tray decks 1 are positioned on said first pressing plate 2; Adopt second pressing plate 3 to be pressed on said nickel chromium triangle ceramic fiber cloth 4 lap-joint's outer surfaces; Said second pressing plate 3 has some through holes at interval and matees with said first pressing plate, 2 lead to the hole site, and the bolt 7 of twisting on first pressing plate 2 passes the through hole of the said nickel chromium triangle ceramic fiber cloth 4 and second pressing plate 3 and passes through nut screwing clamping;
Step 4, two cushion blocks 5 that will be provided with through hole are located at the shoulder 11 of said two tray decks 1 respectively and are positioned at the outer surface of said nickel chromium triangle ceramic fiber cloth 4 lap-joints, and the through hole and the nickel chromium triangle ceramic fiber cloth 4 that adopt bolt 6 to pass said cushion block 5 are twisted in the screw of said tray deck shoulder 11.
For guaranteeing that the pipeline expansion joint after the reparation has the better seal performance, after applying sealers, tightens by the bolt 6 between above-mentioned first pressing plate 2 and second pressing plate 3 and said cushion block 5 and the tray deck shoulder 11 and 7.
This method is applicable to various low pressure, and the slip joint on non-inflammable and explosive, the non-toxic and harmful conveyance conduit is like pipeline of dust collector, blower fan inlets and putlets of ventilation slip joint etc.; This method need not be produced shutdown; Asbestos type slip joint that need not be removing damaged; Directly the welding support dish and first pressing plate on two flange plate of crude asbestos type slip joint, through nickel chromium triangle ceramic fiber cloth, second pressing plate and cushion block being set and adopting bolton, the lap-joint of nickel chromium triangle ceramic fiber cloth applies sealer; The tray deck of nickel chromium triangle ceramic fiber cloth parcel has played the stretching, extension and the contraction of crude asbestos type slip joint; The possibility of having avoided pipeline to be expanded with heat and contract with cold and damage has sealed the crude asbestos type slip joint that damages simultaneously, has guaranteed the sealing of pipeline; This method easy construction has been avoided removing damaged inconvenience, effectively reduces rehabilitation cost, has guaranteed the normal conveying of pipeline medium.
Claims (2)
1. the online restorative procedure of a pipeline asbestos type slip joint comprises two flange plate that connect asbestos type slip joint two ends, it is characterized in that this method comprises the steps:
Step 1, two tray decks of making; Said tray deck center has the through hole with said flange plate outer ring coupling; Said tray deck outer ring is provided with shoulder; Export-oriented respectively the stretching, extension also of said tray deck shoulder vertically is provided with screw, and said two tray deck central through bores are welded in said two flange plate outer ring respectively;
Step 2, between two tray deck tops the welding first pressing plate, said first pressing plate has some screws at interval, is screwed into bolt in some screws of said first pressing plate;
Step 3, with the nickel chromium triangle ceramic fiber cloth be wrapped in said two tray deck outer rings and the overlap joint; The lap-joint of nickel chromium triangle ceramic fiber cloth applies sealer; Shoulder and lap-joint that nickel chromium triangle ceramic fiber cloth two ends are positioned at said two tray decks are positioned on said first pressing plate; Adopt second pressing plate to be pressed on said nickel chromium triangle ceramic fiber cloth lap-joint outer surface; Said second pressing plate has some through holes at interval and matees with the said first pressing plate lead to the hole site, and the bolt of twisting on first pressing plate passes the through hole of the said nickel chromium triangle ceramic fiber cloth and second pressing plate and passes through nut screwing clamping;
Step 4, two cushion blocks that will be provided with through hole are located at the shoulder of said two tray decks respectively and are positioned at the outer surface of said nickel chromium triangle ceramic fiber cloth lap-joint, and the through hole and the nickel chromium triangle ceramic fiber cloth that adopt bolt to pass said cushion block are twisted in the screw of said tray deck shoulder.
2. the online restorative procedure of pipeline asbestos type slip joint according to claim 1 is characterized in that: the bolt between said first pressing plate and second pressing plate and said cushion block and the tray deck shoulder is tightened after applying sealer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101154687A CN102192383B (en) | 2010-03-01 | 2010-03-01 | Online repair method for asbestos type expansion joint of pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101154687A CN102192383B (en) | 2010-03-01 | 2010-03-01 | Online repair method for asbestos type expansion joint of pipeline |
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| Publication Number | Publication Date |
|---|---|
| CN102192383A CN102192383A (en) | 2011-09-21 |
| CN102192383B true CN102192383B (en) | 2012-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010101154687A Active CN102192383B (en) | 2010-03-01 | 2010-03-01 | Online repair method for asbestos type expansion joint of pipeline |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1316327A (en) * | 2001-04-16 | 2001-10-10 | 濮阳市中拓管道清洗修复工程有限公司 | Method for in-situ repairing used pipeline by inserting high-density polyethylene pipe |
| CN1378051A (en) * | 2002-01-29 | 2002-11-06 | 陈悦 | Live leaking-stopping technology |
| CN1632363A (en) * | 2004-12-21 | 2005-06-29 | 上海宝钢综合开发公司 | Gas pipe-line composite reinforcement construction and construction method thereof |
| CN101187435A (en) * | 2007-11-29 | 2008-05-28 | 东营力诺玻璃制品有限责任公司 | Perforation mending method for water pipeline under pressure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7165579B2 (en) * | 2004-09-29 | 2007-01-23 | Dresser, Inc. | Pipeline repair system and method of installation |
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2010
- 2010-03-01 CN CN2010101154687A patent/CN102192383B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1316327A (en) * | 2001-04-16 | 2001-10-10 | 濮阳市中拓管道清洗修复工程有限公司 | Method for in-situ repairing used pipeline by inserting high-density polyethylene pipe |
| CN1378051A (en) * | 2002-01-29 | 2002-11-06 | 陈悦 | Live leaking-stopping technology |
| CN1632363A (en) * | 2004-12-21 | 2005-06-29 | 上海宝钢综合开发公司 | Gas pipe-line composite reinforcement construction and construction method thereof |
| CN101187435A (en) * | 2007-11-29 | 2008-05-28 | 东营力诺玻璃制品有限责任公司 | Perforation mending method for water pipeline under pressure |
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| CN102192383A (en) | 2011-09-21 |
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