CN105221835A - The method of construction of gas pipeline system - Google Patents
The method of construction of gas pipeline system Download PDFInfo
- Publication number
- CN105221835A CN105221835A CN201510716460.9A CN201510716460A CN105221835A CN 105221835 A CN105221835 A CN 105221835A CN 201510716460 A CN201510716460 A CN 201510716460A CN 105221835 A CN105221835 A CN 105221835A
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- Prior art keywords
- pipe
- prefabricated
- gas pipeline
- pipeline system
- construction
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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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pipeline Systems (AREA)
Abstract
The invention discloses a kind of method of construction of gas pipeline system, described method comprises the following steps: (1) determines gas pipeline system material; (2) gas pipeline system pipeline, makes pipe-line system according to design drawing according to the principle of largest global; (3) under factory conditions the gas pipeline system material determined is carried out blanking, manufacturing pipeline and pipe fitting, processed finished products is the prefabricated pipe and prefabricated pipe accessory that meet design drawing requirement; (4) preparation of construction; (5) setting tool is selected; (6) position standpipe by designing requirement, prefabricated pipeline assembles, and locates with pipe clamp; Tighten prefabricated union in advance with spanner, pipe wrench, direction can regulate arbitrarily; (7) erection sequence adopts from top to down or from the installation procedure of any floor.Pipe joint of the present invention greatly reduces, and pipeline integrity improves, and reduces spillage risk.
Description
Technical field
The present invention relates to a kind of method of construction of gas pipeline system, be especially applicable to the method for construction of town gas pipe.
Background technique
Gas pipeline system uses carbon steel material pipeline for a long time always, and wherein, Coating Steel Pipe is widely used.The method of construction always continued to use due to gas pipeline system is in-site measurement, on-the-spot process pipeline screw thread, welding or mantle fiber, carries out anticorrosion or paint work after completion.The pipe fitting adopted and joint are all standard piece, make an amendment making at the scene according to specific requirement.The subject matter existed is: pipeline welding quality in job site cannot ensure effective monitoring, and weldquality cannot ensure, particularly particularly outstanding in the installation of tall building, pipe joint quantity is many, potential leakage point is also many, and pipeline and equipment heaviness, inconvenience is installed; Require high to workmen's technical merit, fixing quality control difficulty is large; Pipeline easily damages anticorrosive coat or zinc coat in transport and work progress; Pipeline poor corrosion resistance, working life is short, and later maintenance input and human cost greatly, cannot ensure the safety and reliability of gas pipeline system.
The method of construction of conventional gas pipe-line system, as illustrated in figs. ia and ib.
Fig. 1 a is indoor Pipe installing schematic diagram, and concrete enforcement operation is as follows: floor punching (having preformed hole to omit) is carried out in the position 1, determined by design drawing; 2, gage is carried out according to floor absolute altitude, blanking/pipe cutting; 3, die head threading machine processing mantle fiber is adopted to the pipeline of well cutting; 4, the pipeline that mantle fiber completes is wound around polytetrafluoroethylraw raw material band (sealing material); 5, the zinc-plated threaded fitting such as threeway or elbow is tightened with pipe wrench.
Particularly, after standpipe determines position, the galvanized pipe 1 ' good by union 11 and on-site cutting is connected, then by zinc-plated threeway 5 ', outer silk 7 ' is connected with the import of valve 4 before table, before table, the outlet of valve 4 is connected with one end of galvanized elbow 2 ', the other end of galvanized elbow is connected with one end of meter connector 6 by outer silk, the other end of meter connector is connected to the import of gas meter 8, the outlet of gas meter 8 is connected with another one galvanized elbow by outer silk, galvanized elbow successively again with the galvanized pipe of another root well cutting, galvanized elbow, ball valve 10, stove pipe 12, gas cooker 9 connects.Wherein, every section of galvanized pipe is provided with pipe clamp for fixing tube.
The shortcoming that above-mentioned this form of construction work exists is: install more time-consuming, and machinery equipment and pipeline heaviness; Because interface quantity is many, slightly just may there is interface gas leakage and cannot pass through air tightness test in carelessness.In addition, indoor weld job is also very loaded down with trivial details, and the carrying of construction equipment commute, on-the-spot gage, blanking, mantle fiber screw thread or welding, the duplication of labour is many, inefficiency.
Fig. 1 b is outdoor pipe scheme of installation, installation two kinds of methods of outdoor pipe: one is welding, and another kind of still mantle fiber is threaded.If employing welding method, tall building unavoidably needs welder to want high-lift operation, and one is there is larger security risk, and two is that welder's skill set requirements is high, once there be the defective Weld Seam Repairation of weld seam to there is very large difficulty; In addition, in any case manual welding technique does not have automatic welding technique reliability high yet.
Outdoor standpipe adopts traditional mantle fiber to be threaded, method is substantially similar with indoor Pipe installing, construct at external wall, there is the problem of operation inconvenience and pipeline heaviness equally, the mass defect that the danger of increase high-lift operation and operational inconvenience cause, once have, weld seam is defective just to have bothered.Secondly, external wall of high-rise building pipeline adopts mantle fiber to be threaded, and leaks air and is difficult to process, and safeguard from now on and change also very difficult after installation.
The material of gas pipeline system is also attempted adopting stainless steel or other composite materials, essentially, the just difference of pipe material, pipeline Placement and construction process do not obtain the raising of essence, particularly adopt the mechanical interface of press-fit, exist constructing operation require high, construction tool is heavy, the intensity of interface and sealability poor, and belong to disposable interface, to install and later maintenance all has very large difficulty.
Summary of the invention
In order to the above-mentioned defect that the method for construction overcoming gas pipeline system in prior art exists, the invention provides a kind of significantly can reduce gas pipeline system interface quantity, reduce difficulty of construction, there is good corrosion resisting property, the method for construction of gas pipeline system that long service life, security risk are low.
The technical solution used in the present invention is:
The method of construction of gas pipeline system, is characterized in that: described method comprises the following steps:
(1) according to service condition, decay resistance and welding performance three factor determination gas pipeline system materials;
(2) gas pipeline system pipeline, carry out according to largest global principle pipe fitting specific design arrange, and according to design drawing according to largest global principle make pipe-line system;
(3) according to the fabrication drawing that gas pipeline system provides, under factory conditions the gas pipeline system material determined is carried out blanking, manufacturing pipeline and pipe fitting, processed finished products is the prefabricated pipe and prefabricated pipe accessory that meet design drawing requirement;
(4) welding of prefabricated pipe and prefabricated pipe accessory adopts automatic welding technique, adopts purity to be not less than the inside and outside protection welding of argon gas of 99.99%;
(5) 100% non-destructive inspection is carried out to the pipe welding seam after welding;
(6) atmosphere protection heat treatment or acid wash passivation process are adopted to prefabricated pipe and prefabricated pipe accessory;
(7) full-automatic three-dimensional numerical controlled bending of pipe equipment is adopted to carry out bend pipe prefabricated;
(8) preparation of construction: be familiar with drawing, understands the technical requirements of pipe-line system; Check the product certificate of pipeline, gas meter and valve, quality certificate and outward appearance zero defect and corrosion situation;
(9) setting tool is selected: electric hammer, spanner, pipe wrench;
(10) position standpipe by designing requirement, prefabricated pipeline assembles, and locates with pipe clamp; Tighten prefabricated union in advance with spanner, pipe wrench, direction can regulate arbitrarily; Pipeline is assembled to ground floor or provided pipe says ground location, can adopt threaded for union or flange conversion; Prefabricated pipe passing through floors, body of wall place adopt flexible sealing material to carry out packing;
(11) erection sequence adopts from top to down or from the installation procedure of any floor, and carries out the air tightness test of pipe-line system by designing requirement.
Tensile strength >=the 485MPa of gas pipeline system material, yield strength >=205MPa, welding performance C (Kohlenstoffgehalt 0≤0.03, corrosion resistance PRE (spot corrosion equivalents) >=18, and be can 100% to reclaim, the environment-friendly materials of environmental sound.
The present invention changes prior art for the inconvenience in gas pipeline site operation process and loaded down with trivial details technique, is carrying out ductwork design in advance, is reducing joint to greatest extent, improves the integrity of pipe-line system; Pipe-line system carries out manufacturing according to design drawing in factory, then scene of transporting to is installed.
Largest global principle alleged by the present invention refers to when the conditions permit of building and install, and reduces pipe joint as far as possible, makes the integration degree of pipe fitting the highest.
Beneficial effect of the present invention is embodied in:
1, pipe joint greatly reduces, and pipeline integrity improves, and reduce spillage risk, pipe-line system reduces by 70% interface, reduces potential leakage point quantity, pipe joint intensity is high, good seal performance.
2, modern plant is transferred in the on-the-spot manufacturing of pipe-line system, realize automation lean production that is intelligent, that customize, the total quality of pipe-line system is guaranteed.
3, the environment-friendly materials of sustainable development are selected.
4, the reliability of pipe-line system and Security are improved significantly.
5, reduce difficulty of construction, improve efficiency of construction.
6, easy construction, without the need to instrument and the operative skill requirement of complexity, without the need to electricity consumption.
7, improve construction quality, reduce construction cost.
8, job site without the need to carrying out cutting, mantle fiber and weld job, without the need to artificial Secondary Anticorrosion after completion; It is off quality that minimizing personal factor causes, without spillage of material and waste.
9, significantly reduce later maintenance cost, pipe-line system essential safety is significantly improved.
Accompanying drawing explanation
Fig. 1 a is the method for construction scheme of installation of prior art indoor standpipe gas pipeline system.
Fig. 1 b is the method for construction scheme of installation of prior art outdoor standpipe gas pipeline system.
Fig. 2 a is the method for construction scheme of installation of the present invention's indoor standpipe gas pipeline system.
Fig. 2 b is the method for construction scheme of installation of the present invention's outdoor standpipe gas pipeline system.
Embodiment
With reference to Fig. 2 a and Fig. 2 b, the method for construction of gas pipeline system, is characterized in that: described method comprises the following steps:
(1) according to service condition, decay resistance and welding performance three factor determination gas pipeline system materials;
(2) gas pipeline system pipeline, carry out according to largest global principle pipe fitting specific design arrange, and according to design drawing according to largest global principle make pipe-line system;
(3) according to the fabrication drawing that gas pipeline system provides, under factory conditions the gas pipeline system material determined is carried out blanking, manufacturing pipeline and pipe fitting, processed finished products is the prefabricated pipe and prefabricated pipe accessory that meet design drawing requirement;
(4) welding of prefabricated pipe and prefabricated pipe accessory adopts automatic welding technique, adopts purity to be not less than the inside and outside protection welding of argon gas of 99.99%;
(6) 100% non-destructive inspection is carried out to the pipe welding seam after welding;
(6) atmosphere protection heat treatment or acid wash passivation process are adopted to prefabricated pipe and prefabricated pipe accessory;
(7) full-automatic three-dimensional numerical controlled bending of pipe equipment is adopted to carry out bend pipe prefabricated;
(8) preparation of construction: be familiar with drawing, understands the technical requirements of pipe-line system; Check the product certificate of pipeline, gas meter and valve, quality certificate and outward appearance zero defect and corrosion situation;
(9) setting tool is selected: electric hammer, spanner, pipe wrench;
(10) position standpipe by designing requirement, prefabricated pipeline assembles, and locates with pipe clamp; Tighten prefabricated union in advance with spanner, pipe wrench, direction can regulate arbitrarily; Pipeline is assembled to ground floor or provided pipe says ground location, can adopt threaded for union or flange conversion; Prefabricated pipe passing through floors, body of wall place adopt flexible sealing material to carry out packing;
(11) erection sequence adopts from top to down or from the installation procedure of any floor, and carries out the air tightness test of pipe-line system by designing requirement.
Tensile strength >=the 485MPa of gas pipeline system material, yield strength >=205MPa, welding performance C≤0.03, corrosion resistance PRE >=18, and be can 100% to reclaim, the environment-friendly materials of environmental sound.
Below introduce the specific embodiments of the method for construction in lower the present embodiment, as shown in Figure 2 a and 2 b.
Fig. 2 a is the indoor Pipe installing schematic diagram in the present embodiment, particularly, after standpipe determines position, be connected with stainless steel prefabricated pipe 1 by union 11, then be connected with the import of valve 4 before table by threeway screwed pipe 5, before table, the outlet of valve 4 is connected with one end of bend pipe meter connector 2, the other end of bend pipe meter connector 2 is connected to the import of gas meter 8 by meter connector, the outlet of gas meter 8 is connected with Curved Continuous pipe thread table attachment 7 by meter connector, and Curved Continuous pipe thread table attachment 7 is connected with ball valve 10, stove pipe 12, gas cooker 9 successively.Wherein, stainless steel prefabricated pipe 1, bend pipe meter connector 2 and Curved Continuous pipe thread table attachment 7 are provided with pipe clamp 3 for fixing tube.
Method of construction in the present embodiment is that modern plant is transferred in the on-the-spot manufacturing of pipe-line system, and realize automation lean production that is intelligent, that customize, the quality of pipe-line system is guaranteed; And pipe-line system reduces by 70% interface, reduce potential leakage point quantity, pipe joint intensity is high, good seal performance.
The outdoor pipe construction method of installation of Fig. 2 b is substantially similar with indoor Pipe installing, specifically sees shown in Fig. 2 b.
Content described in this specification embodiment is only enumerating the way of realization of inventive concept; protection scope of the present invention should not be regarded as being only limitted to the concrete form that embodiment states, protection scope of the present invention also and conceive the equivalent technologies means that can expect according to the present invention in those skilled in the art.
Claims (2)
1. the method for construction of gas pipeline system, is characterized in that: described method comprises the following steps:
(1) according to service condition, decay resistance and welding performance three factor determination gas pipeline system materials;
(2) gas pipeline system pipeline, carry out according to largest global principle pipe fitting specific design arrange, and according to design drawing according to largest global principle make pipe-line system;
(3) according to the fabrication drawing that gas pipeline system provides, under factory conditions the gas pipeline system material determined is carried out blanking, manufacturing pipeline and pipe fitting, processed finished products is the prefabricated pipe and prefabricated pipe accessory that meet design drawing requirement;
(4) welding of prefabricated pipe and prefabricated pipe accessory adopts automatic welding technique, adopts purity to be not less than the inside and outside protection welding of argon gas of 99.99%;
(5) 100% non-destructive inspection is carried out to the pipe welding seam after welding;
(6) atmosphere protection heat treatment or acid wash passivation process are adopted to prefabricated pipe and prefabricated pipe accessory;
(7) full-automatic three-dimensional numerical controlled bending of pipe equipment is adopted to carry out bend pipe prefabricated;
(8) preparation of construction: be familiar with drawing, understands the technical requirements of pipe-line system; Check the product certificate of pipeline, gas meter and valve, quality certificate and outward appearance zero defect and corrosion situation;
(9) setting tool is selected: electric hammer, spanner, pipe wrench;
(10) position standpipe by designing requirement, prefabricated pipeline assembles, and locates with pipe clamp; Tighten prefabricated union in advance with spanner, pipe wrench, direction can regulate arbitrarily; Pipeline is assembled to ground floor or provided pipe says ground location, can adopt threaded for union or flange conversion; Prefabricated pipe passing through floors, body of wall place adopt flexible sealing material to carry out packing;
(11) erection sequence adopts from top to down or from the installation procedure of any floor, and carries out the air tightness test of pipe-line system by designing requirement.
2. the method for construction of gas pipeline system as claimed in claim 1, is characterized in that: the tensile strength >=485MPa of gas pipeline system material, yield strength >=205MPa, welding performance C≤0.03, corrosion resistance PRE >=18.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510716460.9A CN105221835A (en) | 2015-10-29 | 2015-10-29 | The method of construction of gas pipeline system |
| PCT/CN2015/094221 WO2017070987A1 (en) | 2015-10-29 | 2015-11-10 | Construction method for gas pipeline system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510716460.9A CN105221835A (en) | 2015-10-29 | 2015-10-29 | The method of construction of gas pipeline system |
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| Publication Number | Publication Date |
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| CN105221835A true CN105221835A (en) | 2016-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510716460.9A Pending CN105221835A (en) | 2015-10-29 | 2015-10-29 | The method of construction of gas pipeline system |
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| Country | Link |
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| CN (1) | CN105221835A (en) |
| WO (1) | WO2017070987A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106641439A (en) * | 2017-01-22 | 2017-05-10 | 高新伟 | Fabricated construction method for above-ground public gas pipeline system |
| CN109519617A (en) * | 2018-12-28 | 2019-03-26 | 宁波中迪机械有限公司 | Corrosion resistant type control system |
| CN110005883A (en) * | 2019-04-09 | 2019-07-12 | 雷洋 | A kind of connection method that gas pipeline is not got angry |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114427620A (en) * | 2022-01-13 | 2022-05-03 | 北京城建集团有限责任公司 | Pipeline connection method for temporary water use |
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| CN101846216A (en) * | 2010-07-12 | 2010-09-29 | 中国化学工程第四建设公司 | Construction method for connecting natural gas pipelines with gas |
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- 2015-10-29 CN CN201510716460.9A patent/CN105221835A/en active Pending
- 2015-11-10 WO PCT/CN2015/094221 patent/WO2017070987A1/en active Application Filing
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| JP2005282839A (en) * | 2004-03-31 | 2005-10-13 | Sekisui Chem Co Ltd | Construction method for pipeline |
| US20110041925A1 (en) * | 2009-08-19 | 2011-02-24 | Thermacor Process, Lp | Method of Installing Pre-Insulated Piping |
| CN101846216A (en) * | 2010-07-12 | 2010-09-29 | 中国化学工程第四建设公司 | Construction method for connecting natural gas pipelines with gas |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106641439A (en) * | 2017-01-22 | 2017-05-10 | 高新伟 | Fabricated construction method for above-ground public gas pipeline system |
| CN109519617A (en) * | 2018-12-28 | 2019-03-26 | 宁波中迪机械有限公司 | Corrosion resistant type control system |
| CN110005883A (en) * | 2019-04-09 | 2019-07-12 | 雷洋 | A kind of connection method that gas pipeline is not got angry |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2017070987A1 (en) | 2017-05-04 |
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| CB03 | Change of inventor or designer information |
Inventor after: Feng Guoping Inventor before: Gao Xinwei |
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20160106 |