CN105351677A - Method for repairing gas pipeline system in gas delivering process - Google Patents
Method for repairing gas pipeline system in gas delivering process Download PDFInfo
- Publication number
- CN105351677A CN105351677A CN201510701366.6A CN201510701366A CN105351677A CN 105351677 A CN105351677 A CN 105351677A CN 201510701366 A CN201510701366 A CN 201510701366A CN 105351677 A CN105351677 A CN 105351677A
- Authority
- CN
- China
- Prior art keywords
- gas
- pipe line
- gas pipe
- cylinder
- tubular structure
- 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.)
- Granted
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Classifications
-
- 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
- F16L55/168—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe
- F16L55/17—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe by means of rings, bands or sleeves pressed against the outside surface of the pipe or hose
- F16L55/172—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe by means of rings, bands or sleeves pressed against the outside surface of the pipe or hose the ring, band or sleeve being tightened by a tangentially arranged threaded pin and a nut
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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
- F16L55/168—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe
- F16L55/175—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe by using materials which fill a space around the pipe before hardening
Abstract
The invention provides a method for repairing a gas pipeline system in the gas delivering process. The method for repairing the gas pipeline system in the gas delivering process includes the steps that firstly, two cylinder holding pieces are prepared in advance, a tubular structure provided with the thick middle and the two thin ends and surrounding a gas pipeline is formed when the two cylinder holding pieces are oppositely buckled to the gas pipeline, and the interior of the middle of the tubular structure is communicated with the outer side through feeding pipes on the cylinder holding pieces; secondly, a gas leakage point is confirmed, and the two cylinder holding pieces are oppositely buckled to the portion, near the gas leakage point, of the gas pipeline, so that the gas leakage point is located in the middle of the tubular structure formed by the two cylinder holding pieces; thirdly, the tubular structure is filled with a sizing agent through the feeding pipes, and the sizing agent is solidified till the preset strength is reached; and fourthly, welding sealing is conducted on a gap between the cylinder holding pieces, gaps between the cylinder holding pieces and the gas pipeline and pipe openings of the feeding pipes. By the adoption of the method, when the gas leakage point of the gas pipeline system is repaired, production outage and gas supply stop are not needed, repair efficiency is high, safety is high, cost is low, and quality is good.
Description
Technical field
The invention belongs to industrial pipeline and repair field, specifically, relate to a kind of gas pipe line system band gas method for repairing and mending.
Background technique
Industrial, the gas pipe line system for transmitting coal gas comprises gas pipe line and is connected to the compensator between gas pipe line.The dilatation that compensator produces because of thermal stress for compensating pipeline, the most frequently used compensator take bellows as the compensator of primary component.After long-play, gas pipe line system there will be gas leakage point, particularly there will be gas leakage point in compensator part, causes gas leakage, for safety in production brings great hidden danger.Usually, in order to remove a hidden danger, must stop production and stop the supple of gas or steam, then the gas leakage point of gas pipe line system be repaired or changed.But so, can production be affected, thus cause very large economic loss.
Summary of the invention
In order to solve above technical problem, the invention provides a kind of gas pipe line system band gas method for repairing and mending, when adopting the method to repair the gas leakage point of gas pipe line system, without the need to stopping the supple of gas or steam, and repairing efficiency is high, high safety, cost are low, quality good.
To achieve these goals, the invention provides a kind of gas pipe line system band gas method for repairing and mending, the method comprises the steps:
1) two armful cylinder sheets that can relatively be fastened on gas pipe line are prepared in advance, wherein, embrace cylinder sheet forms this gas pipe line of the encirclement thin tubular structure in thick two, centre when being relatively fastened on gas pipe line for these two, and two of this tubular structure is closely enclosed within this gas pipe line, the inside middle of this tubular structure communicates with the external world by being located at the supply pipe embraced on cylinder sheet described at least one;
2) in gas pipe line system, determine the point that leaks gas, and described two armfuls of cylinder sheets are relatively fastened on the gas pipe line near this gas leakage point, make this gas leakage point be in the inside middle of the tubular structure that described two armfuls of cylinder sheets are formed;
3) inside of the tubular structure formed to described armful of cylinder sheet by the supply pipe on described armful of cylinder sheet fills grouting material, and makes this grouting material solidify to reach predetermined strength;
4) to the gap between described armful of cylinder sheet, carry out welded seal to the gap between described armful of cylinder sheet and described gas pipe line and to the mouth of pipe of described supply pipe.
Preferably, described two buckling surfaces embracing cylinder sheets can be provided with flange, by the screw on this flange and the bolt that coordinates with this screw, described two can be made to embrace cylinder sheets and be relatively fastened on gas pipe line.
Preferably, the supply pipe on described armful of cylinder sheet can also be provided with valve or block.
Preferably, when being relatively fastened on the gas pipe line near described gas leakage point by described two armfuls of cylinder sheets, can rubber pad or teflon strip be used to seal between the buckling surface of described armful of cylinder sheet and between described armful of cylinder sheet and the surface of contact of described gas pipe line.
Preferably, when welded seal is carried out to the gap between described armful of cylinder sheet, can first weld non-bolt position, then bolt be cut off, and weld the position after cutting off bolt.
From description above and put into practice, when adopting the gas leakage point of method of the present invention to gas pipe line system to repair, a pair armful of cylinder sheet is first utilized to set up an enclosed space near gas leakage point, then, grouting material is injected in this enclosed space, and grouting material is solidified, just temporarily the leakage of coal gas has been stopped with regard to sample, then, seal welding is carried out when not stopping the supple of gas or steam, thus repairing quality can be ensured for a long time, and ensure to cause secondary gas leakage because grouting material produces crack after repairing.Whole mending course is band gas mending course, and without the need to stopping the supple of gas or steam, and repairing efficiency is high, high safety, cost are low, quality good.
Accompanying drawing explanation
Fig. 1 is transverse side view, shows to embrace by two the tubular structure that cylinder sheets fasten and thick two, centre of being formed is thin described in one embodiment of the present of invention;
Fig. 2 is longitudinal side view, shows the tubular structure Fig. 1 from another angle;
Fig. 3 is sectional view, shows the longitudinal section of the tubular structure in Fig. 1;
Fig. 4 is transverse side view, shows the state being relatively fastened on by two armfuls of cylinder sheets on the gas pipe line near putting that leaks gas described in one embodiment of the present of invention;
Fig. 5 is sectional view, and two armfuls of cylinder sheets shown in Fig. 4 are relatively fastened on the state on the gas pipe line near gas leakage point;
Fig. 6 is sectional view, shows the state injecting grouting material in the tubular structure that two armfuls of cylinder sheets are formed described in one embodiment of the present of invention.
Embodiment
The embodiment of gas pipe line system band gas method for repairing and mending of the present invention is described below with reference to the accompanying drawings.Those of ordinary skill in the art can recognize, when without departing from the spirit and scope of the present invention, can revise by various different mode to described embodiment.Therefore, accompanying drawing is illustrative with being described in essence, instead of for limiting the protection domain of claim.In addition, in this manual, accompanying drawing draws not in scale, and identical reference character represents identical part.
Gas pipe line system band gas method for repairing and mending described in one embodiment of the present of invention comprises the steps:
First, prepare two armful cylinder sheets that can relatively be fastened on gas pipe line in advance, wherein, embrace cylinder sheet forms this gas pipe line of the encirclement thin tubular structure in thick two, centre when being relatively fastened on gas pipe line for these two, and two of this tubular structure is closely enclosed within this gas pipe line, the inside middle of this tubular structure communicates with the external world by being located at the supply pipe embraced on cylinder sheet described at least one.
Fig. 1 is transverse side view, show and embrace by two the tubular structure that cylinder sheets fasten and thick two, centre of being formed is thin described in one embodiment of the present of invention, Fig. 2 is longitudinal side view, the tubular structure Fig. 1 is shown from another angle, Fig. 3 is sectional view, shows the longitudinal section of the tubular structure in Fig. 1.As shown in Figure 1 to Figure 3, two sizes identical, symmetrical shape armful cylinder sheet 1a, 1b can form the middle tubular structure 1 that slightly two is thin by relatively fastening.At least one armful of cylinder sheet (such as embracing a sheet 1a) is wherein provided with supply pipe 2.Two buckling surfaces embracing cylinder sheet 1a, 1b can be provided with flange 3, and embracing cylinder sheet 1a, a 1b by the screw on flange 3 and 4, two, bolt coordinating with this screw can fasten tightly.The present invention is not limited thereto, in fact, two also can be made to embrace cylinder sheet 1a, 1b by band and tightly fasten.In addition, the supply pipe 2 embraced on cylinder sheet can also be provided with valve 5 or block.
After getting out above-mentioned armful of cylinder sheet, in gas pipe line system, determine the point that leaks gas.Gas pipe line system comprises gas pipe line and is connected to the compensator between gas pipe line.Usually easily leaking air a little at compensator place, in the present embodiment, occurred gas leakage point at compensator place, in other embodiments, also can be that gas leakage point has appearred in gas pipe line.After determining gas leakage point, embrace cylinder sheet 1a, 1b by aforesaid two and be relatively fastened on the gas pipe line near this gas leakage point, make this gas leakage point be in the inside middle of the tubular structure 1 that two armfuls of cylinder sheets 1a, 1b are formed.Fig. 4 is transverse side view, show the state being relatively fastened on by two armfuls of cylinder sheets on the gas pipe line near putting that leaks gas described in one embodiment of the present of invention, Fig. 5 is sectional view, and two armfuls of cylinder sheets shown in Fig. 4 are relatively fastened on the state on the gas pipe line near gas leakage point.As illustrated in figures 4-5, because two of tubular structure 1 can closely be enclosed within gas pipe line 6, again due to thick between the detail of tubular structure 1 two, therefore, just an enclosed space is formed near gas leakage point on compensator 7 in gas pipe line system, this enclosed space (that is, the inside middle of tubular structure 1) communicates with the external world by being located at the supply pipe 2 embraced on cylinder sheet.
It should be noted that, before two armfuls of cylinder sheets 1a, 1b are fastened on gas pipe line 6, preferably gas pipe line 6 is contacted the position of embracing cylinder sheet 1a, 1b to clean out, when on gas pipe line 6, cylinder sheet 1a, 1b are embraced in installation, the instruments such as the spanner crowbar used preferably all adopt copper instrument, and best coating butter, in case electrostatic fire.Resuscitation apparatus and gas leak detector need be worn during operator's operation.
In order to seal better, by two embrace cylinder sheet 1a, 1b be relatively fastened on gas leakage point near gas pipe line 6 on time, can embrace cylinder sheet 1a, 1b buckling surface between and embrace use rubber pad or teflon strip 8 to seal between cylinder sheet 1a, 1b and the surface of contact of gas pipe line 6.
After two armfuls of cylinder sheets 1a, 1b being relatively fastened on the gas pipe line 6 near gas leakage point, grouting material 9 is filled to the inside of embracing the tubular structure 1 that cylinder sheet 1a, 1b are formed by the supply pipe 2 embraced on cylinder sheet, and make grouting material 9 solidify to reach predetermined strength, so just temporarily stop gas leakage.Fig. 6 is sectional view, shows the state injecting grouting material in the tubular structure that two armfuls of cylinder sheets are formed described in one embodiment of the present of invention.
The selection of grouting material does not limit, and grouting material preferably has following features: self drainage is good, fast hard, early strong, ungauged regions, microdilatancy and not aging.
After grouting material 9 is solidified to predetermined strength, checks and determine without any gas leakage, then, to embracing gap between cylinder sheet 1a, 1b, to the gap of embracing between cylinder sheet 1a, 1b and gas pipe line 6 and carry out welded seal to the mouth of pipe of supply pipe 2.
Preferably, when welded seal is carried out to the gap of embracing between cylinder sheet 1a, 1b, can first weld non-bolt position, then bolt 4 be cut off, and weld the position after cutting off bolt 4.Can ensure that the sealing of welding part is good like this.
By above-mentioned method for repairing and mending, the gas leakage of gas pipe line point can be guaranteed for a long time to mend.Until during whole audience maintenance, gas pipe line is stopped the supple of gas or steam, then removes this repair part, the gas pipe line more renewed or compensator.
From the above description with put into practice known, when adopting the gas leakage point of method of the present invention to gas pipe line system to repair, a pair armful of cylinder sheet is first utilized to set up an enclosed space near gas leakage point, then, grouting material is injected in this enclosed space, and grouting material is solidified, the leakage of coal gas has temporarily just been stopped with regard to sample, then, seal welding is carried out when not stopping the supple of gas or steam, thus repairing quality can be ensured for a long time, and ensure to cause secondary gas leakage because grouting material produces crack after repairing.Whole mending course is band gas mending course, and without the need to stopping the supple of gas or steam, and repairing efficiency is high, high safety, cost are low, quality good.This method for repairing and mending workmen used is few, the duration is short, applicability and workable, can not only eliminate safe hidden trouble in time, ensure normal safety in production, can also save a large amount of maintenance expenses.
It will be appreciated by those skilled in the art that the gas pipe line system band gas method for repairing and mending that the invention described above is proposed, various improvement and combination can also be made on the basis not departing from content of the present invention.Therefore, protection scope of the present invention should be determined by the content of appending claims.
Claims (5)
1. a gas pipe line system band gas method for repairing and mending, comprises the steps:
1) two armful cylinder sheets that can relatively be fastened on gas pipe line are prepared in advance, wherein, embrace cylinder sheet forms this gas pipe line of the encirclement thin tubular structure in thick two, centre when being relatively fastened on gas pipe line for these two, and two of this tubular structure is closely enclosed within this gas pipe line, the inside middle of this tubular structure communicates with the external world by being located at the supply pipe embraced on cylinder sheet described at least one;
2) in gas pipe line system, determine the point that leaks gas, and described two armfuls of cylinder sheets are relatively fastened on the gas pipe line near this gas leakage point, make this gas leakage point be in the inside middle of the tubular structure that described two armfuls of cylinder sheets are formed;
3) inside of the tubular structure formed to described armful of cylinder sheet by the supply pipe on described armful of cylinder sheet fills grouting material, and makes this grouting material solidify to reach predetermined strength;
4) to the gap between described armful of cylinder sheet, carry out welded seal to the gap between described armful of cylinder sheet and described gas pipe line and to the mouth of pipe of described supply pipe.
2. gas pipe line system band gas method for repairing and mending as claimed in claim 1, wherein, embrace the buckling surfaces of cylinder sheets and be provided with flange for described two, by the screw on this flange and the bolt that coordinates with this screw, described two can be made to embrace cylinder sheets and be relatively fastened on gas pipe line.
3. gas pipe line system band gas method for repairing and mending as claimed in claim 1, wherein, the supply pipe on described armful of cylinder sheet is also provided with valve or block.
4. gas pipe line system band gas method for repairing and mending as claimed in claim 1, wherein, when being relatively fastened on the gas pipe line near described gas leakage point by described two armfuls of cylinder sheets, between the buckling surface of described armful of cylinder sheet and between described armful of cylinder sheet and the surface of contact of described gas pipe line, rubber pad or teflon strip is used to seal.
5. gas pipe line system band gas method for repairing and mending as claimed in claim 2, wherein, when carrying out welded seal to the gap between described armful of cylinder sheet, first welds non-bolt position, is then cut off by bolt, and welds the position after cutting off bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510701366.6A CN105351677B (en) | 2015-10-26 | 2015-10-26 | Gas piping system band gas method for repairing and mending |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510701366.6A CN105351677B (en) | 2015-10-26 | 2015-10-26 | Gas piping system band gas method for repairing and mending |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105351677A true CN105351677A (en) | 2016-02-24 |
| CN105351677B CN105351677B (en) | 2017-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510701366.6A Active CN105351677B (en) | 2015-10-26 | 2015-10-26 | Gas piping system band gas method for repairing and mending |
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| Country | Link |
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| CN (1) | CN105351677B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105627027A (en) * | 2016-04-01 | 2016-06-01 | 西南石油大学 | Pipeline plugging device tightly jacked and sealed through hydraulic pressure |
| CN105757373A (en) * | 2016-04-22 | 2016-07-13 | 无锡商业职业技术学院 | Pipeline sealing device integrating air leakage detecting and filling |
| CN106523848A (en) * | 2016-11-16 | 2017-03-22 | 深圳市燃气集团股份有限公司 | City gas polyethylene pipe safe operation maintenance realization method and system |
| CN113137530A (en) * | 2021-05-07 | 2021-07-20 | 江苏永钢集团有限公司 | Online leakage blocking device and method for gas pipeline |
| CN115143340A (en) * | 2022-07-26 | 2022-10-04 | 北京市燃气集团有限责任公司 | Gas pipeline welded junction gas leakage rapid first-aid repair and monitoring method and system |
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| CN201145123Y (en) * | 2008-01-22 | 2008-11-05 | 重庆钢铁(集团)有限责任公司 | Seal cover for first-aid repairing gas pipeline |
| CN202419036U (en) * | 2012-01-04 | 2012-09-05 | 中国海洋大学 | Expansion type self-stress grouting clamp |
| JP2012215474A (en) * | 2011-03-31 | 2012-11-08 | Mitsubishi Heavy Ind Ltd | Coolant piping structure |
| CN203023737U (en) * | 2012-12-28 | 2013-06-26 | 中国海洋大学 | Short-bolt type expansive self-stress grouting hoop |
| CN204254140U (en) * | 2014-10-30 | 2015-04-08 | 中国石油天然气股份有限公司 | The seal clamp of pipe fitting |
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2015
- 2015-10-26 CN CN201510701366.6A patent/CN105351677B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201145123Y (en) * | 2008-01-22 | 2008-11-05 | 重庆钢铁(集团)有限责任公司 | Seal cover for first-aid repairing gas pipeline |
| JP2012215474A (en) * | 2011-03-31 | 2012-11-08 | Mitsubishi Heavy Ind Ltd | Coolant piping structure |
| CN202419036U (en) * | 2012-01-04 | 2012-09-05 | 中国海洋大学 | Expansion type self-stress grouting clamp |
| CN203023737U (en) * | 2012-12-28 | 2013-06-26 | 中国海洋大学 | Short-bolt type expansive self-stress grouting hoop |
| CN204254140U (en) * | 2014-10-30 | 2015-04-08 | 中国石油天然气股份有限公司 | The seal clamp of pipe fitting |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105627027A (en) * | 2016-04-01 | 2016-06-01 | 西南石油大学 | Pipeline plugging device tightly jacked and sealed through hydraulic pressure |
| CN105757373A (en) * | 2016-04-22 | 2016-07-13 | 无锡商业职业技术学院 | Pipeline sealing device integrating air leakage detecting and filling |
| CN106523848A (en) * | 2016-11-16 | 2017-03-22 | 深圳市燃气集团股份有限公司 | City gas polyethylene pipe safe operation maintenance realization method and system |
| CN113137530A (en) * | 2021-05-07 | 2021-07-20 | 江苏永钢集团有限公司 | Online leakage blocking device and method for gas pipeline |
| CN115143340A (en) * | 2022-07-26 | 2022-10-04 | 北京市燃气集团有限责任公司 | Gas pipeline welded junction gas leakage rapid first-aid repair and monitoring method and system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105351677B (en) | 2017-07-28 |
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