CN101637769A - Blowing method of pipeline - Google Patents

Blowing method of pipeline Download PDF

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Publication number
CN101637769A
CN101637769A CN200910091514A CN200910091514A CN101637769A CN 101637769 A CN101637769 A CN 101637769A CN 200910091514 A CN200910091514 A CN 200910091514A CN 200910091514 A CN200910091514 A CN 200910091514A CN 101637769 A CN101637769 A CN 101637769A
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CN
China
Prior art keywords
pipeline
explosion
gas
compressed gas
blowing
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Pending
Application number
CN200910091514A
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Chinese (zh)
Inventor
赵华军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Huaye Group Co Ltd
Original Assignee
MCC Huaye Resources Development Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by MCC Huaye Resources Development Co Ltd filed Critical MCC Huaye Resources Development Co Ltd
Priority to CN200910091514A priority Critical patent/CN101637769A/en
Publication of CN101637769A publication Critical patent/CN101637769A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a blowing method of a pipeline, comprising the following steps: at the connection position of the pipeline, adopting flanges for connection; using a blind plate to block otherpipelines and clamping a blasting plate between the flanges at one end of the pipeline to be cleaned; introducing compressed gas in the pipeline continuously, leading the blasting plate to blast by means of the pressure of the compressed gas, exhausting the gas in the pipeline from the inside thereof and discharging the impurities therein. The blowing method can improve the cleanness of the pipeline well, save time, have short construction period, reduce the manual investment and the consumption of materials and achieve better technical effect.

Description

A kind of blowing method of pipeline
Technical field
The present invention relates to a kind of blowing method of pipeline, especially refer to a kind of pipeline air purge cleaning method.
Background technology
Gas combined cycle generation technology is a kind of efficient, clean energy resource engineering, has the generating efficiency height, and water consumption is few, own demand is low, and environment protecting is good, and the construction period is short, therefore the generating equipment of characteristics such as floor space is little, and startup and variable load are fast has obtained using comparatively widely.
The operation principle of gas turbine fuel coal gas, be from the high temperature of coal press machine discharge, the pressurized gas of high pressure, and be transported to the combustion chamber of combustion machine by a pipeline, therefore, this root pipeline is a very high pipeline of requirement clean-up performance, if in work progress, welding requirements sneaked into foreign matters such as welding slag in the tight or unit running process, will cause accidents such as damage or casing explosion to turbines vane.Therefore in the process of pipeline installation, must check one by one each pipe joint road, simultaneously, the per pass weld bond all adopts the argon arc welding bottoming, improve weldquality, after whole process is finished, finally also need to adopt the method for pipeline purging, constantly purge this root pipe, improve the clean-up performance of pipeline, the effect that is able to keep the safety in production.
Mostly the method for purging pipeline traditionally is to adopt the method for single air purge, and the principle of this method is to be medium with the air, by means of carrying gas medium, blows down dirty foreign material residual on the pipeline.
But this kind purging mode exists following problem: the length that the first, expends time in, adopt this kind blowing method, and need a large amount of time the impurity in the pipeline could to be blown away; The second, purge poor effect, because the problem of gas flow rate, inside foreign material in the pipeline, particularly the little heavy for example stone of volume, steel quarrel etc. often can not be cleaned out, therefore, adopt this kind method, be difficult to meet the requirements of cleanliness factor, for the better requirement of satisfying production, need a kind of more efficiently blowing method of pipeline.
Summary of the invention
It is not thorough to the present invention is directed to traditional blowing method, the problem that cleannes are not high, proposed a kind of respond well, can reach the more blowing method of high cleanliness, its technical scheme is:
A kind of blowing method of pipeline is characterized in that, adopts gas to purge, and comprises the following steps:
In the junction of pipeline, adopt flange to connect;
Seal other pipeline with blind plate, and in the middle of pipeline one end flanges that will clean, accompany the explosion plate;
Constantly feed Compressed Gas in pipeline, by means of the pressure of Compressed Gas, make explosion plate generation explosion, the gas in the pipeline is discharged from its inside, and impurity is wherein discharged.
As of the present invention a kind of preferred, used Compressed Gas, its pressure are 0.6MPa.
As of the present invention a kind of preferred, used explosion plate adopts aluminium sheet.
As of the present invention a kind of preferred, used Compressed Gas is compressed air.
Preferred as another kind of the present invention, used Compressed Gas is compressed nitrogen.
Technical scheme of the present invention, be that an end of pipeline is isolated, the other end at the feeding gas of pipeline increases the explosion plate, then, to pipe interior input compressed air, because the bearing capacity of explosion plate is lower than the bearing capacity of pipeline, when the pressure of pipeline reaches certain degree, the explosion plate is broken, at this moment, the pressure in the pipeline descends rapidly, and then produces high pressure draught fast, because the differential pressure in the pipeline is very big, what common air purge method was difficult to eliminate can be purged away easily attached to the iron rust on the tube wall etc.
After adopting the present invention, can be good at improving the cleannes of pipeline, and save time, the integral construction duration is short, quality good, has reduced artificial input, has reduced supplies consumption, thereby improved the installing engineering economic benefit, obviously the reduction of erection time, reached better technical effect.
Description of drawings
Fig. 1 is the schematic diagram of one embodiment of the present of invention
The specific embodiment
Below in conjunction with the drawings and specific embodiments the present invention is done further detailed description, so that better understand the technical program.
The schematic diagram of embodiment as shown in Figure 1, pipeline 3 is a pipeline to be cleaned, end at pipeline 3 is equipped with flange 1, accompany explosion plate 2 in the middle of the flange, compressed air enters from an end of pipeline, and by the open and close of valve 4 control Compressed Gas, a termination of admission line 5 has source of the gas, and an end links to each other with pipeline 3.
Explosion sweeping method of the present invention, its principle is that an end of pipeline 3 is isolated, in the middle of the flange 1 of the relative other end of the feeding gas of pipeline, increase explosion plate 2, give in the pipeline 3 then and feed Compressed Gas, because the bearing capacity of explosion plate is lower than the bearing capacity of pipeline, when the pressure of pipeline 3 reaches certain degree, explosion plate 2 is broken, at this moment, pressure in the pipeline 3 descends rapidly, and then produces air-flow fast, because the pressure differential in the pipeline 3 changes very greatly, can purge away attached to iron rust on the tube wall etc., and then can reach and purge effect preferably.
Before pipeline purges, at first, must check in the process of pipeline installation that simultaneously, the per pass weld bond all adopts the argon arc welding bottoming one by one to each pipe joint road.
During purging, end flanges place at the pipeline that will clean is equipped with the aluminium sheet that a thickness is 0.5mm, and other pipeline carried out shutoff with blind plate, termination at pipeline has admission line 5, the valve 4 that enters and close in order to control gas is arranged above the admission line, and a termination of admission line 5 has source of the gas.
When purging beginning, need slowly supply gas, when checking that outlet has air to discharge, can add atm number to required amount gradually and purge, in case cause system overpressure or air compressor system is broken down because of incorrect reasons such as valve, blind plates to pipeline.
In an embodiment, used source of the gas is a compressed air.
Because source of the gas has adopted compressed air, therefore, obtaining of source of the gas can utilize the large-scale compressor of compressible air to provide, because it can provide Compressed Gas apace, the system that therefore can well finish purges; Certainly, also can adopt the compressor compresses air running of other types to provide.
In further preferred embodiment, used Compressed Gas adopts compressed nitrogen, because nitrogen is not easy to react with other materials, therefore, under the high situation of requirements for pipes, can adopt compressed nitrogen, to satisfy the effect to pipeline, equipment protection.
In addition, explosion is purged reach ideal effect, need to satisfy requirement pressure, gas flow, flow velocity, therefore, the pressure of used Compressed Gas is preferably 0.6MPa, under the condition of this air pressure, can satisfy can the short time explosion, and the impurity in the pipeline is taken out of outside the pipe.Certainly, also can apply the Compressed Gas bigger than this gas pressure, but the highest pressure design scope that should not exceed pipeline, in addition, in explosion purges, also need enough tolerance, to guarantee that gas has enough momentum, to purge out the remaining attachment in pipeline and the equipment.
In purging carries out, only after up-stream system is qualified, purging air could enter down-stream system by normal flow, the method of inspection is as follows, when pulling down aluminium sheet after the explosion, has foreign matters such as welding slag, oxide skin at burner opening, as pull down that cleaner no-sundries is qualified behind the aluminium sheet, change another pipeline again, purge one by one, valve and pipeline are recovered in qualified back.
It should be noted that; during purging; need be with all instrument measurement component disassemblings of installing on the pipeline; the dirty foreign material that flow when preventing to purge damage the instrument components and parts; also tackle control valve simultaneously and take suitable safeguard measure; in addition; must be before equipment entrance sides such as burner blank off, only remaining that the upstream purges can access arrangement after qualified, in addition; should select interim purging valve for use; during purging, safety valve and pipeline junction should be disconnected, and blank off or baffle plate; in order to avoid dirty foreign material are purged at the bottom of the valve, make safety valve bottom sealing surface wear.
In addition, though utilize the technical characterictic identical with concrete structural element etc. and the embodiment and the figure of qualification that the present invention has been described, this is in order to help more fully to understand the present invention, and the present invention is not limited to the foregoing description.All can carry out numerous variations and distortion one of ordinary skill in the art of the present invention by above-mentioned record.
Therefore, thought of the present invention is not limited to the embodiment of above explanation, and thought category of the present invention not only comprises the scope of claims record, also comprises with claim being equal to or distortion of equal value.

Claims (5)

1, a kind of blowing method of pipeline utilizes air to purge, and it is characterized in that, comprises the following steps:
In the junction of pipeline, adopt flange to connect;
Seal other pipeline with blind plate, and in the middle of pipeline one end flanges that will clean, accompany the explosion plate;
Constantly feed Compressed Gas in pipeline, by means of the pressure of Compressed Gas, make explosion plate generation explosion, the gas in the pipeline is discharged from its inside, and impurity is wherein discharged.
2, explosion sweeping method as claimed in claim 1 is characterized in that, used Compressed Gas, its pressure are 0.6MPa.
3, explosion sweeping method as claimed in claim 1 or 2 is characterized in that, used explosion plate adopts aluminium sheet or other metallic plates.
4, explosion sweeping method as claimed in claim 1 or 2 is characterized in that, used Compressed Gas is compressed air.
5, explosion sweeping method as claimed in claim 1 or 2 is characterized in that, used Compressed Gas is compressed nitrogen.
CN200910091514A 2009-08-26 2009-08-26 Blowing method of pipeline Pending CN101637769A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200910091514A CN101637769A (en) 2009-08-26 2009-08-26 Blowing method of pipeline

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN200910091514A CN101637769A (en) 2009-08-26 2009-08-26 Blowing method of pipeline

Publications (1)

Publication Number Publication Date
CN101637769A true CN101637769A (en) 2010-02-03

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN200910091514A Pending CN101637769A (en) 2009-08-26 2009-08-26 Blowing method of pipeline

Country Status (1)

Country Link
CN (1) CN101637769A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103162549A (en) * 2011-12-15 2013-06-19 上海宝钢化工有限公司 Blow method of blocking objects in tube-type heating furnace and tube opening plugging device of tube-type heating furnace
CN103191893A (en) * 2013-03-27 2013-07-10 深圳市广前电力有限公司 Cleaning method and deivce of lubricating oil pipeline
CN109513693A (en) * 2018-11-21 2019-03-26 锐驰高科股份有限公司 Large Diameter Pipeline complex pipeline cleaning method
CN109764742A (en) * 2018-11-27 2019-05-17 宁波亚洲浆纸业有限公司 A kind of processing method of pipeline deposit adhesion object
CN110523718A (en) * 2019-08-31 2019-12-03 上海宝冶集团有限公司 The long range blowing method of sled sled racing track ammonia refrigeration pipeline
CN111014196A (en) * 2019-12-25 2020-04-17 中国海洋石油集团有限公司 Continuous blasting and purging device for pipeline and blasting and purging method thereof
CN113000495A (en) * 2021-02-22 2021-06-22 中国长江电力股份有限公司 Cold and hot water positive and negative water-gas interaction pulse cleaning and drying device and method

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103162549A (en) * 2011-12-15 2013-06-19 上海宝钢化工有限公司 Blow method of blocking objects in tube-type heating furnace and tube opening plugging device of tube-type heating furnace
CN103162549B (en) * 2011-12-15 2014-10-22 上海宝钢化工有限公司 Blow method of blocking objects in tube-type heating furnace and tube opening plugging device of tube-type heating furnace
CN103191893A (en) * 2013-03-27 2013-07-10 深圳市广前电力有限公司 Cleaning method and deivce of lubricating oil pipeline
CN109513693A (en) * 2018-11-21 2019-03-26 锐驰高科股份有限公司 Large Diameter Pipeline complex pipeline cleaning method
CN109513693B (en) * 2018-11-21 2021-08-31 锐驰高科股份有限公司 Method for cleaning large-caliber complex pipeline
CN109764742A (en) * 2018-11-27 2019-05-17 宁波亚洲浆纸业有限公司 A kind of processing method of pipeline deposit adhesion object
CN110523718A (en) * 2019-08-31 2019-12-03 上海宝冶集团有限公司 The long range blowing method of sled sled racing track ammonia refrigeration pipeline
CN111014196A (en) * 2019-12-25 2020-04-17 中国海洋石油集团有限公司 Continuous blasting and purging device for pipeline and blasting and purging method thereof
CN113000495A (en) * 2021-02-22 2021-06-22 中国长江电力股份有限公司 Cold and hot water positive and negative water-gas interaction pulse cleaning and drying device and method

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