CN102486246A - Polyethylene pipeline hot-melt conjunction construction method - Google Patents
Polyethylene pipeline hot-melt conjunction construction method Download PDFInfo
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- CN102486246A CN102486246A CN2010105749901A CN201010574990A CN102486246A CN 102486246 A CN102486246 A CN 102486246A CN 2010105749901 A CN2010105749901 A CN 2010105749901A CN 201010574990 A CN201010574990 A CN 201010574990A CN 102486246 A CN102486246 A CN 102486246A
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Abstract
The invention relates to a polyethylene pipeline hot-melt conjunction construction method. According to the construction method, polyethylene pipeline material hot-melt conjunction is realized by virtue of verifying pipelines and pipe fittings, preparing soldering, milling the end part of a conjunction part and calibrating the coaxiality, measuring the dragging force, soldering under controllable pressure, sweeping the pipeline, testing pressure and other steps. The method is suitable for construction at the trench and in the trench, is convenient, safe and reliable. The polyethylene pipeline belongs to an olefin polymer compound, and the molecule of the polyethylene pipeline consists of carbon and hydrogen elements, so that the polyethylene pipeline does not contain harmful elements, and is clean and reliable. In processing, using and abandoning processes, the polyethylene pipeline cannot bring adverse impact to human bodies or environment, thus being an environmentally-friendly construction material. The polyethylene pipeline has the advantages of good toughness and flexibility, excellent soldering performance, reliable soldering effect in the pipeline connection process, low cost, excellent air-tightness and corrosion resistance and excellent anti-cracking quick transfer capability, and can be widely applied in construction fields, such as municipal engineering, petroleum, chemical engineering, gas and the like.
Description
Technical field
The present invention relates to the method for construction in engineering construction field, particularly a kind of polyethylene pipe hot melt connection construction method.
Background technique
Polyethylene pipe material belongs to the TPO polymeric compound, and its molecule is made up of carbon, protium, no harmful element, and health is reliable.Processing, use and discarded process in, can not cause adverse effect to human body and environment, be green building material.Polyvinyl piping materials is toughness, flexible good not only, and welding performance is splendid, in the pipeline connection procedure welding reliable for effect, cost is low; Have good air-tightness, corrosion resistance and the good quick transmission capacity of opposing crackle simultaneously, thereby be widely used in construction fields such as municipal administration, oil, chemical industry, combustion gas.
The thermofussion welding welding is to utilize heating tool to be heated to about 210 ℃ with pipeline or with the pipe fitting end face (specifically to provide parameter to be as the criterion with producer; General 190 ℃～240 ℃); Certain time under controllable pressure makes the both ends of the surface fusion be one, forms the pipeline welded joint that conforms to quality requirements.Different polythene material heating-up temperatures are different, and the welding parameter that specifically provides according to the manufacture of materials merchant is confirmed.
Summary of the invention
The technical problem that the present invention will solve provides a kind of polyethylene pipe hot melt connection construction method, and this method not only had been useful in the pipe trench limit but also had been useful in the pipe trench carries out, convenient convenient, safe and reliable.
For solving the problems of the technologies described above, described polyethylene pipe hot melt connection construction method comprises the steps:
(1) examination of pipeline, pipe fitting, pipeline, pipe fitting should be selected pipe fitting and flange and valves such as supporting isometrical, reducing elbow and threeway for use according to construction requirement;
(2) welding is prepared, and takes turns doing following inspection before the welding: should check earlier whether site environment meets the environmental requirement of hot melt, when site environment can not satisfy execution conditions, should take corresponding measure to make it to satisfy the hot melt requirement; Whether inspection welding machine situation satisfies job requirement, and the fastening piece at each position of inspection facility has or not and comes off or loosening; Whether the checking machine electric line connects correct, reliable; Whether hydraulic oil is sufficient in the inspection hydraulic fluid tank; Confirm the input of power supply and facility requires whether to be complementary; Whether the inspection heating plate meets the requirements; Whether inspection milling cutter and pump switch be normal;
(3) gentle coaxality check and correction is milled in the connection part end: the dirt of removing ends of tubes with clean cloth; Then tubing is placed in the frame slips; The length that the butt joint two ends are stretched out should shorten about equally and under the situation that satisfies milling and heating requirements as far as possible; The part of tubing beyond frame holds up with supporting frame, makes tubing axis and frame central line be in sustained height, uses slips fastening good then; Insert milling cutter, open the milling cutter power switch earlier, slowly close up two tubing welding endss then, and in addition suitable pressure, all there is continuous smear metal to occur up to both ends of the surface, remove pressure, slightly wait a moment, withdraw from movable frame again, turn off the milling cutter power supply; Chip thickness should be 0.5～1.0mm, the thickness of the Height Adjustable smear metal through regulating milling cutter; Take out milling cutter, close up the two ends pipe, inspection justify align situation;
(4) measure dilatory force, because the difference of each site condition, the surface friction drag that can cause moving anchor clamps has nothing in common with each other; This surface friction drag of considered in practice of construction, it and process parameter pressure superposition obtain actual working pressure together; After tubing clips in anchor clamps, slowly move anchor clamps, the power that record this moment is dilatory force, can be read by pressure gauge, carries out record;
(5) welding under controllable pressure: when doing homework, open heating plate under the normal condition earlier and preheat, the time is about Ke Da setting temperature about 20 minutes; After temperature of heating plate reaches setting value, put into frame, exert pressure, pressure was reduced to specified value when minimum crimping reached Rack up to both sides, absorbed heat; The heat absorption time is backed out movable frame after satisfying, and takes out heating plate rapidly, closes up two pipe ends then; Switching time should be short as far as possible, can not surpass specified value, when taking off heating plate, should avoid bumping with the end face of fusion, if take place, should after the end face that has melted thoroughly cools off, restart whole welding process; The rapid closing anchor clamps, and in scheduled time, evenly pressure is adjusted to welding pressure, press button cool time simultaneously, write down cool time; When boosting after the anchor clamps closure, should evenly boost, can not be too soon or too slow, should in scheduled time, accomplish, in order to avoid form dry joint, rosin joint; This process pressurize natural cooling process; After being cooled to scheduled time, slips is unclamped in release, takes out to connect the tubing of accomplishing, and indicates numbering and welder's mark, the welding of preparing next interface at the weld bond place with pen; Must system pressure be reduced to zero before unloading pipe; If need to move welding machine, should pull down the hydraulic pressure lead, and in time carry out the dustproof work at head place; Qualified weld seam should have two flange, and the welding bead turnup is to the pipe excircle, and the shape of two flange, big or small uniformity, pore-free, bubbling and crackle, the root in the slit between two flange are not less than the surface of institute's welded tube;
(6) pipeline purges and pressure testing, and pipeline purges and pressure testing should be carried out by " fuel gas polyethylene pipeline engineering rules " and " engineering construction of city gas transmission & distribution and acceptance specification " relevant regulations.
Wherein, in said step (3), the magnitude of misalignment of tubing should not surpass the higher value among 10% or the 1mm of pipe thickness, can proofread and correct to a certain extent through adjustment tubing straightness accuracy and degree of tightness slips; Should there be obvious slit between the tubing both ends of the surface when closing up; Gap width can not surpass: and 0.3mm (D≤225mm), 0.5mm (225mm＜D≤400mm) or 1.0mm (D＞400mm); As do not satisfy above-mentioned requirements milling once more, till satisfying, D is the diameter of pipe.
Compared with prior art, polyethylene pipe hot melt connection construction method of the present invention is used polyethylene pipe material, and this material belongs to the TPO polymeric compound, and its molecule is made up of carbon, protium, no harmful element, and health is reliable.Processing, use and discarded process in, can not cause adverse effect to human body and environment, be green building material.Polyvinyl piping materials is toughness, flexible good not only, and welding performance is splendid, in the pipeline connection procedure welding reliable for effect, cost is low; Have good air-tightness, corrosion resistance and the good quick transmission capacity of opposing crackle simultaneously, thereby be widely used in construction fields such as municipal administration, oil, chemical industry, combustion gas.
Description of drawings
Fig. 1 is the workflow diagram of polyethylene pipe hot melt connection construction method of the present invention.
Embodiment
Polyethylene pipe hot melt connection construction method as shown in Figure 1, the polyethylene pipe hot melt connection construction method comprises the steps:
(1) examination of pipeline, pipe fitting, pipeline, pipe fitting should be selected pipe fitting and flange and valves such as supporting isometrical, reducing elbow and threeway for use according to construction requirement;
(2) welding is prepared, and takes turns doing following inspection before the welding: should check earlier whether site environment meets the environmental requirement of hot melt, when site environment can not satisfy execution conditions, should take corresponding measure to make it to satisfy the hot melt requirement; Whether inspection welding machine situation satisfies job requirement, and the fastening piece at each position of inspection facility has or not and comes off or loosening; Whether the checking machine electric line connects correct, reliable; Whether hydraulic oil is sufficient in the inspection hydraulic fluid tank; Confirm the input of power supply and facility requires whether to be complementary; Whether the inspection heating plate meets the requirements; Whether inspection milling cutter and pump switch be normal;
(3) gentle coaxality check and correction is milled in the connection part end: the dirt of removing ends of tubes with clean cloth; Then tubing is placed in the frame slips; The length that the butt joint two ends are stretched out should shorten about equally and under the situation that satisfies milling and heating requirements as far as possible; The part of tubing beyond frame holds up with supporting frame, makes tubing axis and frame central line be in sustained height, uses slips fastening good then; Insert milling cutter, open the milling cutter power switch earlier, slowly close up two tubing welding endss then, and in addition suitable pressure, all there is continuous smear metal to occur up to both ends of the surface, remove pressure, slightly wait a moment, withdraw from movable frame again, turn off the milling cutter power supply; Chip thickness should be 0.5～1.0mm, the thickness of the Height Adjustable smear metal through regulating milling cutter; Take out milling cutter, close up the two ends pipe, inspection justify align situation;
(4) measure dilatory force, because the difference of each site condition, the surface friction drag that can cause moving anchor clamps has nothing in common with each other; This surface friction drag of considered in practice of construction, it and process parameter pressure superposition obtain actual working pressure together; After tubing clips in anchor clamps, slowly move anchor clamps, the power that record this moment is dilatory force, can be read by pressure gauge, carries out record;
(5) welding under controllable pressure: when doing homework, open heating plate under the normal condition earlier and preheat, the time is about Ke Da setting temperature about 20 minutes; After temperature of heating plate reaches setting value, put into frame, exert pressure, pressure was reduced to specified value when minimum crimping reached Rack up to both sides, absorbed heat; The heat absorption time is backed out movable frame after satisfying, and takes out heating plate rapidly, closes up two pipe ends then; Switching time should be short as far as possible, can not surpass specified value, when taking off heating plate, should avoid bumping with the end face of fusion, if take place, should after the end face that has melted thoroughly cools off, restart whole welding process; The rapid closing anchor clamps, and in scheduled time, evenly pressure is adjusted to welding pressure, press button cool time simultaneously, write down cool time; When boosting after the anchor clamps closure, should evenly boost, can not be too soon or too slow, should in scheduled time, accomplish, in order to avoid form dry joint, rosin joint; This process pressurize natural cooling process; After being cooled to scheduled time, slips is unclamped in release, takes out to connect the tubing of accomplishing, and indicates numbering and welder's mark, the welding of preparing next interface at the weld bond place with pen; Must system pressure be reduced to zero before unloading pipe; If need to move welding machine, should pull down the hydraulic pressure lead, and in time carry out the dustproof work at head place; Qualified weld seam should have two flange, and the welding bead turnup is to the pipe excircle, and the shape of two flange, big or small uniformity, pore-free, bubbling and crackle, the root in the slit between two flange are not less than the surface of institute's welded tube;
(6) pipeline purges and pressure testing, and pipeline purges and pressure testing should be carried out by " fuel gas polyethylene pipeline engineering rules " and " engineering construction of city gas transmission & distribution and acceptance specification " relevant regulations.
Wherein, in said step (3), the magnitude of misalignment of tubing should not surpass the higher value among 10% or the 1mm of pipe thickness, can proofread and correct to a certain extent through adjustment tubing straightness accuracy and degree of tightness slips; Should there be obvious slit between the tubing both ends of the surface when closing up; Gap width can not surpass: and 0.3mm (D≤225mm), 0.5mm (225mm＜D≤400mm) or 1.0mm (D＞400mm); As do not satisfy above-mentioned requirements milling once more, till satisfying, D is the diameter of pipe.
Compared with prior art, polyethylene pipe hot melt connection construction method of the present invention is used polyethylene pipe material, and this material belongs to the TPO polymeric compound, and its molecule is made up of carbon, protium, no harmful element, and health is reliable.Processing, use and discarded process in, can not cause adverse effect to human body and environment, be green building material.Polyvinyl piping materials is toughness, flexible good not only, and welding performance is splendid, in the pipeline connection procedure welding reliable for effect, cost is low; Have good air-tightness, corrosion resistance and the good quick transmission capacity of opposing crackle simultaneously, thereby be widely used in construction fields such as municipal administration, oil, chemical industry, combustion gas.
Claims (2)
1. a polyethylene pipe hot melt connection construction method comprises the steps:
(1) examination of pipeline, pipe fitting, pipeline, pipe fitting should be selected pipe fitting and flange and valves such as supporting isometrical, reducing elbow and threeway for use according to construction requirement;
(2) welding is prepared, and takes turns doing following inspection before the welding: should check earlier whether site environment meets the environmental requirement of hot melt, when site environment can not satisfy execution conditions, should take corresponding measure to make it to satisfy the hot melt requirement; Whether inspection welding machine situation satisfies job requirement, and the fastening piece at each position of inspection facility has or not and comes off or loosening; Whether the checking machine electric line connects correct, reliable; Whether hydraulic oil is sufficient in the inspection hydraulic fluid tank; Confirm the input of power supply and facility requires whether to be complementary; Whether the inspection heating plate meets the requirements; Whether inspection milling cutter and pump switch be normal;
(3) gentle coaxality check and correction is milled in the connection part end: the dirt of removing ends of tubes with clean cloth; Then tubing is placed in the frame slips; The length that the butt joint two ends are stretched out should shorten about equally and under the situation that satisfies milling and heating requirements as far as possible; The part of tubing beyond frame holds up with supporting frame, makes tubing axis and frame central line be in sustained height, uses slips fastening good then; Insert milling cutter, open the milling cutter power switch earlier, slowly close up two tubing welding endss then, and in addition suitable pressure, all there is continuous smear metal to occur up to both ends of the surface, remove pressure, slightly wait a moment, withdraw from movable frame again, turn off the milling cutter power supply; Chip thickness should be 0.5～1.0mm, the thickness of the Height Adjustable smear metal through regulating milling cutter; Take out milling cutter, close up the two ends pipe, inspection justify align situation;
(4) measure dilatory force, because the difference of each site condition, the surface friction drag that can cause moving anchor clamps has nothing in common with each other; This surface friction drag of considered in practice of construction, it and process parameter pressure superposition obtain actual working pressure together; After tubing clips in anchor clamps, slowly move anchor clamps, the power that record this moment is dilatory force, can be read by pressure gauge, carries out record;
(5) welding under controllable pressure: when doing homework, open heating plate under the normal condition earlier and preheat, the time is about Ke Da setting temperature about 20 minutes; After temperature of heating plate reaches setting value, put into frame, exert pressure, pressure was reduced to specified value when minimum crimping reached Rack up to both sides, absorbed heat; The heat absorption time is backed out movable frame after satisfying, and takes out heating plate rapidly, closes up two pipe ends then; Switching time should be short as far as possible, can not surpass specified value, when taking off heating plate, should avoid bumping with the end face of fusion, if take place, should after the end face that has melted thoroughly cools off, restart whole welding process; The rapid closing anchor clamps, and in scheduled time, evenly pressure is adjusted to welding pressure, press button cool time simultaneously, write down cool time; When boosting after the anchor clamps closure, should evenly boost, can not be too soon or too slow, should in scheduled time, accomplish, in order to avoid form dry joint, rosin joint; This process pressurize natural cooling process; After being cooled to scheduled time, slips is unclamped in release, takes out to connect the tubing of accomplishing, and indicates numbering and welder's mark, the welding of preparing next interface at the weld bond place with pen; Must system pressure be reduced to zero before unloading pipe; If need to move welding machine, should pull down the hydraulic pressure lead, and in time carry out the dustproof work at head place; Qualified weld seam should have two flange, and the welding bead turnup is to the pipe excircle, and the shape of two flange, big or small uniformity, pore-free, bubbling and crackle, the root in the slit between two flange are not less than the surface of institute's welded tube;
(6) pipeline purges and pressure testing, and pipeline purges and pressure testing should be carried out by " fuel gas polyethylene pipeline engineering rules " and " engineering construction of city gas transmission & distribution and acceptance specification " relevant regulations.
2. polyethylene pipe hot melt connection construction method as claimed in claim 1; It is characterized in that: in said step (3); The magnitude of misalignment of tubing should not surpass the higher value among 10% or the 1mm of pipe thickness, can proofread and correct to a certain extent through adjustment tubing straightness accuracy and degree of tightness slips; Should there be obvious slit between the tubing both ends of the surface when closing up; Gap width can not surpass: and 0.3mm (D≤225mm), 0.5mm (225mm＜D≤400mm) or 1.0mm (D＞400mm); As do not satisfy above-mentioned requirements milling once more, till satisfying, D is the diameter of pipe.
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| CN2010105749901A CN102486246A (en) | 2010-12-06 | 2010-12-06 | Polyethylene pipeline hot-melt conjunction construction method |
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| CN2010105749901A CN102486246A (en) | 2010-12-06 | 2010-12-06 | Polyethylene pipeline hot-melt conjunction construction method |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104260334A (en) * | 2014-07-15 | 2015-01-07 | 宁国市东兴实业有限公司 | Hot-melt docking method for PE pipes |
| CN104482298A (en) * | 2014-07-14 | 2015-04-01 | 中冶交通（沈阳）建设工程有限公司 | HDPE (high-density polyethylene) steel-plastic composite spiral winding drainage pipe installation construction method |
| CN108724741A (en) * | 2018-08-13 | 2018-11-02 | 常熟力登维汽车部件有限公司 | PE moldings butting tooling and system of processing |
| CN109016526A (en) * | 2018-08-22 | 2018-12-18 | 四川省新艺源科技有限公司 | A kind of PE pipe hot melt welding method |
| CN110107759A (en) * | 2019-05-14 | 2019-08-09 | 云南联塑科技发展有限公司 | A kind of ultrahigh molecular weight polyethylene tubing heat-melting butt-joint method |
| CN110253892A (en) * | 2019-07-17 | 2019-09-20 | 成都市岷江自来水厂双流聚乙烯管材生产车间 | Plastic conduit welds installation and adjustment bracket and application method |
| CN110253897A (en) * | 2019-06-24 | 2019-09-20 | 山东超高管业有限公司 | A kind of ultra-high molecular weight polyethylene pipe material for water supply Rapid hot-melting butt weld technologies for steel |
| CN113638433A (en) * | 2021-06-29 | 2021-11-12 | 中铁电气化局集团北京建筑工程有限公司 | Construction method for foundation raft penetrating through ground source side circulating pipe of ground source heat pump system |
| CN113878884A (en) * | 2021-08-30 | 2022-01-04 | 中建七局安装工程有限公司 | Method for improving pipeline welding efficiency |
| CN113895043A (en) * | 2021-09-03 | 2022-01-07 | 江西联塑科技实业有限公司 | Hot-melt welding method for PVC-U drainage pipe |
-
2010
- 2010-12-06 CN CN2010105749901A patent/CN102486246A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104482298A (en) * | 2014-07-14 | 2015-04-01 | 中冶交通（沈阳）建设工程有限公司 | HDPE (high-density polyethylene) steel-plastic composite spiral winding drainage pipe installation construction method |
| CN104260334A (en) * | 2014-07-15 | 2015-01-07 | 宁国市东兴实业有限公司 | Hot-melt docking method for PE pipes |
| CN108724741A (en) * | 2018-08-13 | 2018-11-02 | 常熟力登维汽车部件有限公司 | PE moldings butting tooling and system of processing |
| CN109016526A (en) * | 2018-08-22 | 2018-12-18 | 四川省新艺源科技有限公司 | A kind of PE pipe hot melt welding method |
| CN110107759A (en) * | 2019-05-14 | 2019-08-09 | 云南联塑科技发展有限公司 | A kind of ultrahigh molecular weight polyethylene tubing heat-melting butt-joint method |
| CN110253897A (en) * | 2019-06-24 | 2019-09-20 | 山东超高管业有限公司 | A kind of ultra-high molecular weight polyethylene pipe material for water supply Rapid hot-melting butt weld technologies for steel |
| CN110253892A (en) * | 2019-07-17 | 2019-09-20 | 成都市岷江自来水厂双流聚乙烯管材生产车间 | Plastic conduit welds installation and adjustment bracket and application method |
| CN113638433A (en) * | 2021-06-29 | 2021-11-12 | 中铁电气化局集团北京建筑工程有限公司 | Construction method for foundation raft penetrating through ground source side circulating pipe of ground source heat pump system |
| CN113638433B (en) * | 2021-06-29 | 2023-03-14 | 中铁电气化局集团北京建筑工程有限公司 | Construction method for foundation raft penetrating through ground source side circulating pipe of ground source heat pump system |
| CN113878884A (en) * | 2021-08-30 | 2022-01-04 | 中建七局安装工程有限公司 | Method for improving pipeline welding efficiency |
| CN113878884B (en) * | 2021-08-30 | 2023-12-19 | 中建七局安装工程有限公司 | Method for improving pipeline welding efficiency |
| CN113895043A (en) * | 2021-09-03 | 2022-01-07 | 江西联塑科技实业有限公司 | Hot-melt welding method for PVC-U drainage pipe |
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| DD01 | Delivery of document by public notice |
Addressee: Shanghai Huolong Industrial Co.,Ltd. Document name: Notification of Passing Preliminary Examination of the Application for Invention |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120606 |