CN1327979C - Method of rust cleaning, scale removing, film coating and corrosion preventing for large and middle sized pipeline inside wall - Google Patents
Method of rust cleaning, scale removing, film coating and corrosion preventing for large and middle sized pipeline inside wall Download PDFInfo
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- CN1327979C CN1327979C CNB2005100240909A CN200510024090A CN1327979C CN 1327979 C CN1327979 C CN 1327979C CN B2005100240909 A CNB2005100240909 A CN B2005100240909A CN 200510024090 A CN200510024090 A CN 200510024090A CN 1327979 C CN1327979 C CN 1327979C
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Abstract
The present invention relates to a method for removing rust and scale from the inner wall of a large/medium pipeline and coating a film for corrosion resistance on the inner wall of the large/medium pipeline, which relates to the technology of the rust and scale removal and film coating for corrosion resistance of a pipeline of large/medium caliber and is suitable for the rust and scale removal and film coating for corrosion resistance of the inner wall of a long-range laid water supply pipe, water conveying pipe, gas pipe, oil pipe, etc. which have equal caliber. In the present invention, a pipeline needing to be cleaned is split into segments, and one of the segments is used as an air storage tank; under the action of an air flow (a cyclone), rust and scale removal and cleaning are performed on the inner wall of the pipeline after the pipeline is connected with a cleaning device; with a fluid coating material, the inner wall of the pipeline is coated with a coating film which has the functions of protecting the inner wall of the pipeline, preventing rust, resisting scale and smoothing the transformation of gas and liquid. The method of the present invention has the advantages of short time of pipeline cleaning, less energy consumption, high speed of construction progress, no pollution, no excavation of large-area ground surface (belonging to the technology of non-excavation repair), low cost of construction and good economic benefit and social benefit.
Description
Technical field
Large and medium-sized inner-walls of duct rust removing and contaminant releasing and film anticorrosion method, relate to pipeline rust cleaning, the scale removal aseptic technic of centering, large-scale bore, be applicable to the feed pipe that long distance is laid, feed pipe, appendix, the rust cleaning of round inner-walls of duct such as petroleum pipeline, scale removal and the retaining wall of filming are anticorrosion.
Background technology
In the world inner-walls of duct rust cleaning, scale removal and inner wall anti-corrosive are handled at present following several big class methods are arranged: 1, mechanical means.2 chemical methodes adopt chemical agent to pour in the pipeline, deposit a period of time, make that the fouling in the pipe is softened, come off, and reach the scale removal purpose.3. vibrating method, by pipeline is vibrated (as, knock pipeline) reach descale effect after rust staining in the pipeline and fouling are come off.4. electromagnetic method stops inner-walls of duct fouling and scale removal by electromagnetic field.5. lining method is by serving as a contrast the further corrosion that plastic tube prevents inner-walls of duct again on the inner-walls of duct of corrosion.6. the air-flow method adopts high pressure gas, water to inner-walls of duct rust cleaning, scale removal and retaining wall.Though above-mentioned these methods have obtained utilization widely, and good social benefit and economic benefit have also been produced, but said method is also deposited deficiency separately, as: with the air-flow method to large diameter pipeline eliminate rust, scale removal and inner wall anti-corrosive, jumbo air accumulator (bag) then must be set, to guarantee to be cleaned enough tolerance be arranged in the large diameter pipeline, the cost of rust cleaning, scale removal will be very high like this, and the construction technology complexity, rust cleaning, scale removal and anticorrosion operation are very inconvenient.For bigbore pipeline, the rust, the dirt that generally adopt mechanical means will tie on inner-walls of duct strike off at present, but this method inefficiency, especially can not to turn or vertically disposed in, large diameter pipeline eliminates rust, scale removal and film anticorrosion.
Summary of the invention
Deficiency at above-mentioned centering, the rust cleaning of large diameter pipeline inwall, scale removal and film anticorrosion, the inventor is through research and practice, proposed a kind of in the process that large and medium-sized pipeline (300 millimeters～1000 millimeters of calibers) is coated with clearly, earlier the pipeline that is coated with is clearly carried out segmentation, a utilization pipeline section storing compressed air wherein is as air accumulator, adopt air compressor to the air accumulator gas transmission, by gas, water, sand to large and medium-sized inner-walls of duct eliminate rust, the method for scale removal and film anticorrosion.
The inventive method is when work, at first look and to be coated with pipe condition clearly and to determine the segmentation of pipeline, segmentation place block pipeline and connect clear coating device (length of disconnected pipe equates with clear coating device, to the inwall of the pipe that breaks eliminate rust in addition, scale removal, cleaning and the processing of coating coating).Utilizing wherein one section is that the pipeline section of storing compressed air is as air accumulator, determine compressed-air actuated pressure,, be coated with work gas demand clearly to satisfy, and can make it in the big or medium-sized pipeline that is coated with clearly, form " willy-willy " to the air accumulator gas transmission by air compressor.Through add after the voltage stabilizing clear water, sand grains under the effect of high speed air flow with sand grains to foreign material such as the rust of inner-walls of duct, dirt clash into, rubbing makes rust staining and fouling pulverize to come off and takes the pipeline that is cleaned with air-flow out of, with compressed air, water tube wall is cleaned again, with air-flow tube wall is dried up, and liquid coating by the air flow band and be coated on the inner-walls of duct equably and dry up and form one deck cuticula, make the inner-walls of duct fouling of no longer getting rusty.At last, will replace, link into an integrated entity the rust cleaning of whole pipe, scale removal, cleaning and coating coating end-of-job with former pipeline through the disconnected pipe that rust cleaning, scale removal, cleaning and coating coating are handled.This method is underground for being embedded in, in the long distance, large-scale pipeline, does not need to carry out that extensive ground excavation just can eliminate rust easily piecemeal, scale removal, cleans and carry out film anticorrosion.
The clear coating device that the inventive method adopts is connected and composed by valve by two sections taper pipeline sections, on two taper pipeline sections, some valves are set respectively, on the valve of one section taper pipeline section, water tank is set, sand tank, paint can, water tank, sand tank, paint can is communicated with another taper pipeline section by the valve on tube connector and another conical pipe.The sand grains that the inventive method adopts is quartz sand, rubble, iron sand grain or steel sand grain.
Advantage of the present invention is fairly obvious; The inventive method is carried out segmentation to pipeline and is utilized be coated with pipeline clearly one section as air accumulator, simplified to pipeline be coated with operation clearly, do not need special caisson, that just can satisfy engineering uses the gas requirement.The clear coating device that adopts is simple in structure, installation and easy to operate, to in using, large diameter pipeline is coated with clearly, no matter how complicated it moves towards to distribute, how long length has, need not carry out the large number of ground excavation, just can remove the foreign material such as rust, dirt of inner-walls of duct, can carry out film anticorrosion to the inner-walls of duct that is cleaned again, easy and simple to handle, the engineering time is short, cost is low, construction operation is little to social influence, meets country to environmental protection requirement, especially to long distance bury underground in, large diameter pipeline also is the method that desirable non-excavation is safeguarded reparation.
Description of drawings
Accompanying drawing is an embodiment of the invention schematic diagram, the present invention do not limited, wherein:
Fig. 1 is the inventive method implementation schematic flow sheet.
Fig. 2 be clearly coating device and work schematic diagram.
The specific embodiment
In conjunction with above-mentioned accompanying drawing the inventive method is described further:
1 pair of the inventive method workflow is described with reference to the accompanying drawings:
When the inventive method is implemented, at first according to the material that is coated with pipeline clearly, pipeline moves towards the execution conditions of position and periphery, determine the position of the disconnected pipe of segmentation, the position of air compression plant and the position of exhaust are set, block pipeline and connect clear coating device by the length of clear coating device, determine that earlier one section pipeline section is used for gas storage as air accumulator and definite air pressure, adopt air compressor manufacturing Compressed Gas and import air accumulator, and carry out voltage stabilizing, open connecting valve then enters compressed gas to be cleaned in the pipeline section, form high pressure draught (willy-willy), add clear water this moment, sand grains, sand grains constantly clashes into inner-walls of duct under the effect of air-flow, friction, make rust staining, fouling is pulverized, come off and taken out of discharge of pipes by air-flow, by air-flow and water tube wall is cleaned then, with air-flow inner-walls of duct is dried up again, at last liquid coating is joined in the air-flow, liquid coating is coated on the inner-walls of duct equably under the air-flow effect, to be filmed by air-flow and dry up in coating end back, form one deck cuticula at inner-walls of duct, it is anticorrosion to play inner-walls of duct, the good antiscale property effect.
The 2 pairs of clear coating devices and enforcement are described with reference to the accompanying drawings:
During the invention process, at first according to the pipeline that will be coated with clearly, determine that by situation on the spot disconnected pipe place blocks pipeline by the length of clear coating device 1, pipeline is divided into A section, B section, at A section, the intersegmental fixedly connected clear coating device 1 of B, what the disconnected pipe that cuts down carried out rust removing and contaminant releasing in addition is coated with processing clearly.The terminal airtight air accumulator of A segment pipe as Compressed Gas, air compressor is communicated with the A depot siding, and in the A pipeline section, imports compressed air, the not end of B segment pipe opens wide.When in the A segment pipe, reaching required compression gas-pressure, opening valve 3 allows high pressure gas enter in the B segment pipe, also Open valve (4) adds an amount of water in the B segment pipe from water tank 5, sand tank 6 simultaneously, sand to the B segment pipe eliminate rust, scale removal, cleaning, the air pressure of A segment pipe valve-off 3 when dropping to a nearly atmospheric pressure, maintenance is carried out the gas storage voltage stabilizing to A pipeline injecting compressed air, continue then to the B segment pipe eliminate rust, scale removal, repeat rust cleaning, scale removal for several times like this, until the B inner-walls of duct is cleaned up, and inwall is dried up.Open valve 4 adds an amount of liquid coating in the B segment pipe from paint can 7 then, and the air-flow of rotation is coated in liquid coating on the B segment pipe inwall equably, and coating is dried up, and makes at B segment pipe inwall and forms one deck protection corrosion prevention film.The B segment pipe be coated with end-of-job clearly.
Otherwise, when the A segment pipe is cleaned rust cleaning, scale removal, do not hold airtight mouthful to open the A segment pipe, the airtight air accumulator of B segment pipe as stores compression gas, with air compressor and the connection of B segment pipe, and in the B segment pipe injecting compressed air.And 7 transposings of water tank 5, sand tank 6, paint can are set to the opposite side of coating device 1 clearly, the connection of tube connector is opposite when being coated with the B segment pipe clearly.According to the program that is coated with the B segment pipe clearly and method to A segment pipe inwall eliminate rust, scale removal, cleaning and coating coating, finish the work that is coated with clearly at last to A segment pipe inwall.
After the work that is coated with clearly of A segment pipe and B segment pipe is finished,, be linked to be a pipeline again the connection that fuses of the disconnected pipe that was coated with clearly and A segment pipe and B segment pipe.
Claims (2)
1, greatly, medium-sized inner-walls of duct rust removing and contaminant releasing and film anticorrosion method, it is characterized in that: the pipeline that be coated with is clearly carried out segmentation, utilize wherein one section storing compressed air, as air accumulator, disconnected pipe place connects clear coating device (1) in segmentation, by air compressor gas transmission and definite pressure in air accumulator, exit in the pipeline section that is coated with clearly through Open valve after the voltage stabilizing (3), Open valve (4) is from water tank (5) simultaneously, added clear water in the pipeline to being coated with clearly in the sand tank (6), sand grains under action of high-speed airflow with the rust of sand grains to inner-walls of duct, dirt clashes into, friction makes rust staining and fouling pulverize to come off and takes out of with air-flow and is coated with discharge of pipes clearly, use compressed air again, water is cleaned inner-walls of duct, with air-flow inner-walls of duct is dried up, Open valve (4) is added liquid coating to being coated with clearly in the pipeline from paint can (7), be coated in coating on the inner-walls of duct equably and dry up by air-flow to form one deck cuticula.
2, method according to claim 1 is characterized in that: clear coating device (1) by two sections conical pipes (2) in its tapered portion by linking into an integrated entity with valve (3), the bottom opening of conical pipe (2), its diameter is identical with the diameter that will be coated with pipeline clearly; On two conical pipes (2), be respectively equipped with valve (4), on the valve (4) of one section conical pipe (2), water tank (5) be set, sand tank (6), paint can (7); Water tank (5), sand tank (6), paint can (7) are connected with valve (4) on another section conical pipe (2) by tube connector respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100240909A CN1327979C (en) | 2005-02-28 | 2005-02-28 | Method of rust cleaning, scale removing, film coating and corrosion preventing for large and middle sized pipeline inside wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100240909A CN1327979C (en) | 2005-02-28 | 2005-02-28 | Method of rust cleaning, scale removing, film coating and corrosion preventing for large and middle sized pipeline inside wall |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1654135A CN1654135A (en) | 2005-08-17 |
| CN1327979C true CN1327979C (en) | 2007-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2005100240909A Expired - Fee Related CN1327979C (en) | 2005-02-28 | 2005-02-28 | Method of rust cleaning, scale removing, film coating and corrosion preventing for large and middle sized pipeline inside wall |
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| CN (1) | CN1327979C (en) |
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| CN101518773B (en) * | 2009-03-24 | 2011-06-15 | 李常胜 | Method and device for clearing rust-dirt and performing anticorrosion coating on metal pipelines |
| CN101554631A (en) * | 2009-05-18 | 2009-10-14 | 项炳荣 | Cleaning and dredging method of pipelines |
| CN101767098B (en) * | 2010-03-09 | 2012-05-16 | 上海松下等离子显示器有限公司 | Piping cleaning method |
| CN101788094B (en) * | 2010-03-11 | 2012-01-25 | 陕西天元石化建设工程有限公司 | Inner wall anti-corrosive construction process of buried pipeline |
| CN101823065A (en) * | 2010-04-30 | 2010-09-08 | 苏州德华机械设备有限公司 | Device for descaling and derusting for pipeline and coating to form anti-corrosion coat and application method |
| CN102172572B (en) * | 2011-03-16 | 2013-01-09 | 中国石油化工股份有限公司 | Inner wall washing and coating corrosion resisting method for manifold pipelines in oil fields |
| CN104415950A (en) * | 2013-08-27 | 2015-03-18 | 常州苏丞不锈钢有限公司 | High-pressure pipeline and manufacturing method thereof |
| CN104190676B (en) * | 2014-08-06 | 2016-04-06 | 苏州热工研究院有限公司 | The cleaning of nuclear power station pipeline inner wall corrosion product and coating coating unit |
| CN105642620A (en) * | 2014-11-13 | 2016-06-08 | 广东核电合营有限公司 | Method and device for cleaning and coating of interior of nuclear power station pipeline through aerodynamic force |
| CN104480309A (en) * | 2014-12-31 | 2015-04-01 | 耒阳市焱鑫有色金属有限公司 | Blockage cleaning device and method for smoke dust airflow conveying main line |
| CN104785416B (en) * | 2015-03-14 | 2017-07-21 | 四川迅升油气工程技术有限公司 | The online coating method of high sulfur Gas Fields gathering line and internal pressure vessel walls |
| CN105414121A (en) * | 2015-10-30 | 2016-03-23 | 王筱均 | Method for scale removal and coating wall protection of pipeline based on vacuum process and device thereof |
| CN106475913A (en) * | 2016-04-13 | 2017-03-08 | 吉林省天德立管道工程科技有限公司 | The rust cleaning of swirling eddy method inner-walls of duct snaking, coating antiseptic technology |
| CN106078482A (en) * | 2016-06-17 | 2016-11-09 | 龙滩水电开发有限公司龙滩水力发电厂 | A kind of batch iron chains New Rust-removing Process |
| CN106761495B (en) * | 2017-01-16 | 2023-01-17 | 济宁学院 | Hole washing device for coal mine gas extraction hole |
| CN109985792A (en) * | 2018-10-11 | 2019-07-09 | 马付林 | A kind of long range coated lining anti-corrosion method of inner wall of steel pipe |
| CN109373101A (en) * | 2018-11-12 | 2019-02-22 | 北京扬帆凯程科技有限公司 | A kind of detection of new old pipeline, reparation, anti-corrosion method |
| CN112090878A (en) * | 2020-09-08 | 2020-12-18 | 陈广萍 | Degreasing and cleaning method for inner wall of high-pressure oxygen pipeline |
| CN114570714B (en) * | 2020-12-02 | 2023-06-30 | 中国石油天然气股份有限公司 | Treatment method of oil delivery pipe |
| CN115213179A (en) * | 2022-06-06 | 2022-10-21 | 东营汇聚丰石油科技有限公司 | High-speed cyclonic pipeline cleaning device and method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1557624A (en) * | 2004-02-10 | 2004-12-29 | 广州励进新技术有限公司 | Method and apparatus for producing inside and outside anticorrosion steel-plastic composite pipe |
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2005
- 2005-02-28 CN CNB2005100240909A patent/CN1327979C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1557624A (en) * | 2004-02-10 | 2004-12-29 | 广州励进新技术有限公司 | Method and apparatus for producing inside and outside anticorrosion steel-plastic composite pipe |
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| Publication number | Publication date |
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| CN1654135A (en) | 2005-08-17 |
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Effective date of registration: 20160414 Address after: 137000 Baicheng City, Jilin province Tao North Economic Development Zone Patentee after: JILIN TIANDELI PIPELINE ENGINEERING TECHNOLOGY CO.,LTD. Address before: 200082 Shanghai city Yangpu District Huaide Road Lane 287 No. 1 Room 601 Patentee before: Wang Xiaojun Patentee before: Wang Xiaomin |
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Address after: No.6b01, building A3, no.2355, sightseeing Road, wisdom City, China Merchants Group, Guangming District, Shenzhen City, Guangdong Province Patentee after: Shenzhen tiandeli Technology Co.,Ltd. Address before: 137000 Baicheng City, Jilin province Tao North Economic Development Zone Patentee before: JILIN TIANDELI PIPELINE ENGINEERING TECHNOLOGY Co.,Ltd. |
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Granted publication date: 20070725 |
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| CF01 | Termination of patent right due to non-payment of annual fee |