CN201561199U - Mining wear-resistant steel-plastic composite pipeline - Google Patents
Mining wear-resistant steel-plastic composite pipeline Download PDFInfo
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- CN201561199U CN201561199U CN2009202551111U CN200920255111U CN201561199U CN 201561199 U CN201561199 U CN 201561199U CN 2009202551111 U CN2009202551111 U CN 2009202551111U CN 200920255111 U CN200920255111 U CN 200920255111U CN 201561199 U CN201561199 U CN 201561199U
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Abstract
The utility model belongs to the technical field of pipelines and discloses a mining wear-resistant steel-plastic composite pipeline. The utility model adopts the technical scheme that the wear-resistant steel-plastic composite pipeline comprises a steel pipe outer wall inside which a high molecular weight polyethylene inner lining layer is arranged, and an intermediate bonding layer made of low molecular weight polyethylene modified by grafting copolymerization of maleic anhydride and used for sticking the high molecular weight polyethylene inner lining layer and the steel pipe outer wall into a whole is arranged between the high molecular weight polyethylene inner lining layer and the steel pipe outer wall. In the provided mining wear-resistant steel-plastic composite pipeline, the steel pipe outer wall is taken as the pressure bearing body with high pressure bearing ability, the high molecular weight polyethylene inner lining layer is taken as the wear-resistant anticorrosive layer and can be used for delivering slurry, paste, corrosive fluid and other mediums with different diameters of particles, the intermediate bonding layer made of low molecular weight polyethylene modified by grafting copolymerization of maleic anhydride is used for compounding the three layers of materials into a whole, and the expansion and shrinkage coefficients inside and outside are the same, therefore, the phenomenon of end surface deformation of the plastic pipe and blocking due to delaminating of the steel-plastic composite pipeline is overcome.
Description
Technical field
The utility model belongs to the pipe technology field, discloses a kind of mine wear-resistant composite metal plastic pipe concretely.
Background technique
At present, the wear-resisting pipeline that industries such as nonferrous mine such as gold mine, silver ore, iron ore, copper mine, molybdenum ore and power plant are used for tailings conveying, filling, ash transfer is based on steel pipe, and part producer adopts ceramic composite steel pipe and polyvinyl piping materials.Because steel pipe than great, not wear-resisting, not anticorrosion, has therefore been wasted a large amount of energy consumption resources; Though and ceramic composite steel pipe is wear-resisting, exist quality big, the shortcoming that install, operating expenses is high, more fatal defective are that the rear inner lining sinter layer that is hit is frangible, therefore can not get popularization and application; Though polyvinyl piping materials is anticorrosion, wear-resisting, the bearing capacity deficiency, so the steel-plastic composite pipe of steel pipe and the simple suit of polyvinyl piping materials has appearred on the market.Suit certainly exists the gap, because the coefficient of thermal expansion and contraction of two kinds of materials is different, therefore very easily mould pipe and steel pipe delamination in use, cause the pipeline blockage phenomenon, and tubing deposits in the process, and weather conditions change the pipe end face of moulding that forms and exceed or retraction steel pipe end face phenomenon.
The model utility content
The technical problems to be solved in the utility model just provides a kind of bearing capacity height, wear resistance is good, anticorrosive property is good mine wear-resistant composite metal plastic pipe.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: comprise that inside is provided with the outer wall of steel pipe of High molecular weight polyethylene inside liner, be provided with the middle adhesive layer of the maleic anhydride graft modification by copolymerization low molecular weight polyethylene that both are bonded as one between described High molecular weight polyethylene inside liner and outer wall of steel pipe.
Its additional technical feature is: the thickness of described outer wall of steel pipe is 3～12mm, and the thickness of adhesive layer is 0.5～1.0mm in the middle of the maleic anhydride graft modification by copolymerization low molecular weight polyethylene, the High molecular weight polyethylene inside liner thickness be 7～12mm;
Described High molecular weight polyethylene inside liner is LLDPE inside liner, high density polyethylene (HDPE) inside liner or ultra-high molecular weight polyethylene inside liner;
The end of described outer wall of steel pipe is provided with the flange plate that has groove, and the end flange of High molecular weight polyethylene inside liner snaps in groove;
The end of described outer wall of steel pipe is provided with flexible shoulder shape pipe joint.
Mine wear-resistant composite metal plastic pipe provided by the utility model compared with prior art is provided with the middle adhesive layer of the maleic anhydride graft modification by copolymerization low molecular weight polyethylene that both are bonded as one between High molecular weight polyethylene inside liner and outer wall of steel pipe.Like this, outer wall of steel pipe is as the pressure-bearing body, and tubing has the mechanical strength that is equal to steel pipe, and the bearing capacity height can satisfy Intermediate High Pressure requirement under the different service conditions and shock resistance, flexural strength requirement.The High molecular weight polyethylene inside liner of different molecular weight is as wear-resisting, anticorrosive coat, can carry the media such as slurry, lotion, corrosive fluid of variable grain diameter, and water resistance is very little, has overcome the thin shortcoming of plastics coated tube coating.Adhesive layer is commonly called as hot melt adhesive in the middle of the maleic anhydride graft modification by copolymerization low molecular weight polyethylene, with trilaminate material compound be one, outer field coefficient of thermal expansion and contraction is identical in the pipeline, overcome mould in pipe end face deformation and the using process steel of existing product plastic lining layer when storage, transportation and moulded the plugging phenomenon that delamination takes place and cause, steel pipe, steel stoneware pipe light specific gravity compared to same function, it is convenient to install, construct, and cost performance is largely increased.According to different situations, mine wear-resistant composite metal plastic pipe can adopt flange plate to connect or rapid pipe joint connects.When adopting flange plate to connect, have the flange plate of groove in the end welding of outer wall of steel pipe, the end flange of High molecular weight polyethylene inside liner is snapped in groove.When adopting rapid pipe joint to connect, the upward flexible shoulder shape of the end welding pipe joint of outer wall of steel pipe is used for clamp band type rapid pipe joint and connects.
Description of drawings
Fig. 1 is the structural representation of the utility model mine wear-resistant composite metal plastic pipe;
Fig. 2 is first kind of connection diagram of mine wear-resistant composite metal plastic pipe;
Fig. 3 is second kind of connection diagram of mine wear-resistant composite metal plastic pipe.
Embodiment
Be described in further detail below in conjunction with the structure of accompanying drawing mine wear-resistant composite metal plastic pipe provided by the utility model:
As shown in Figure 1, the mine wear-resistant composite metal plastic pipe that the utility model provides comprises outer wall of steel pipe 1, the middle adhesive layer 2 of maleic anhydride graft modification by copolymerization low molecular weight polyethylene and High molecular weight polyethylene inside liner 3 from outside to inside successively, and adhesive layer 2 is bonded as one High molecular weight polyethylene inside liner 3 and outer wall of steel pipe 1 in the middle of the maleic anhydride graft modification by copolymerization low molecular weight polyethylene.The thickness of outer wall of steel pipe 1 is 3～12mm, the thickness of adhesive layer 2 is 0.5～1.0mm in the middle of the maleic anhydride graft modification by copolymerization low molecular weight polyethylene, High molecular weight polyethylene inside liner 3 thickness be 7～12mm, High molecular weight polyethylene inside liner 3 can be LLDPE inside liner, high density polyethylene (HDPE) inside liner or ultra-high molecular weight polyethylene inside liner.
During use, outer wall of steel pipe 1 is as the pressure-bearing body, and the bearing capacity height can satisfy Intermediate High Pressure requirement under the different service conditions and shock resistance, flexural strength requirement.The High molecular weight polyethylene inside liner 3 of different molecular weight is as wear-resisting, anticorrosive coat, can carry the media such as slurry, lotion, corrosive fluid of variable grain diameter, and water resistance is very little, has overcome the thin shortcoming of plastics coated tube coating.In the middle of the maleic anhydride graft modification by copolymerization low molecular weight polyethylene adhesive layer 2 with trilaminate material compound be one, outer field coefficient of thermal expansion and contraction is identical in the pipeline, overcome mould in pipe end face deformation and the using process steel of existing product plastic lining layer when storage, transportation and moulded the plugging phenomenon that delamination takes place and cause, steel pipe, steel stoneware pipe light specific gravity compared to same function, it is convenient to install, construct, and cost performance is largely increased.
When mine wear-resistant composite metal plastic pipe is installed, can adopt flange plate to connect as shown in Figure 2 or rapid pipe joint connection as shown in Figure 3.Adopt when flange plate connects as shown in Figure 2, have the flange plate 5 of groove 4 in the end welding of outer wall of steel pipe 1, the end flange of High molecular weight polyethylene inside liner 3 is snapped in groove 5, and the groove 4 with adjacent flanges dish 5 is oppositely arranged and installs seal rubber pad 6 then, connects with bolt 7 to get final product.When adopting rapid pipe joint as shown in Figure 3 to connect, flexible shoulder shape pipe joint 8 is gone up in the end welding of outer wall of steel pipe 1, connects fast with the clip 10 that has cushion rubber 9.
Claims (5)
1. mine wear-resistant composite metal plastic pipe, comprise that inside is provided with the outer wall of steel pipe of High molecular weight polyethylene inside liner, is characterized in that: be provided with the middle adhesive layer of the maleic anhydride graft modification by copolymerization low molecular weight polyethylene that both are bonded as one between described High molecular weight polyethylene inside liner and outer wall of steel pipe.
2. mine wear-resistant composite metal plastic pipe according to claim 1, it is characterized in that: the thickness of described outer wall of steel pipe is 3～12mm, the thickness of adhesive layer is 0.5～1.0mm in the middle of the maleic anhydride graft modification by copolymerization low molecular weight polyethylene, the High molecular weight polyethylene inside liner thickness be 7～12mm.
3. mine wear-resistant composite metal plastic pipe according to claim 1 and 2 is characterized in that: described High molecular weight polyethylene inside liner is LLDPE inside liner, high density polyethylene (HDPE) inside liner or ultra-high molecular weight polyethylene inside liner.
4. mine wear-resistant composite metal plastic pipe according to claim 1 and 2 is characterized in that: the end of described outer wall of steel pipe is provided with the flange plate that has groove, and the end flange of High molecular weight polyethylene inside liner snaps in groove.
5. mine wear-resistant composite metal plastic pipe according to claim 1 and 2 is characterized in that: the end of described outer wall of steel pipe is provided with flexible shoulder shape pipe joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202551111U CN201561199U (en) | 2009-12-17 | 2009-12-17 | Mining wear-resistant steel-plastic composite pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202551111U CN201561199U (en) | 2009-12-17 | 2009-12-17 | Mining wear-resistant steel-plastic composite pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201561199U true CN201561199U (en) | 2010-08-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202551111U Expired - Fee Related CN201561199U (en) | 2009-12-17 | 2009-12-17 | Mining wear-resistant steel-plastic composite pipeline |
Country Status (1)
| Country | Link |
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| CN (1) | CN201561199U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101725774B (en) * | 2009-12-17 | 2011-07-27 | 河北金菱管业股份有限公司 | Mine wear-resistant composite metal plastic pipe, special preparation equipment thereof and preparation method thereof |
| WO2013033465A1 (en) * | 2011-08-30 | 2013-03-07 | E. I. Du Pont De Nemours And Company | Multilayer protective liner |
| CN106481933A (en) * | 2016-11-03 | 2017-03-08 | 江苏昊晟塑业科技有限公司 | Polyethylene Foam Insulating Pipe road |
| CN106496722A (en) * | 2016-09-26 | 2017-03-15 | 中国科学院兰州化学物理研究所 | Compound pipeline complex pipeline and its preparation technology |
| CN108361450A (en) * | 2018-01-30 | 2018-08-03 | 廊坊德源建材有限公司 | Wet desulphurization mineral slurry conveys the corrosion-resistant multiple tube of high abrasion and preparation |
| CN108916535A (en) * | 2018-08-30 | 2018-11-30 | 天津开发区天水华源机电设备技术有限公司 | A kind of flexible compound liner pipe fitting |
| CN112325001A (en) * | 2020-10-29 | 2021-02-05 | 安徽杰蓝特新材料有限公司 | Reinforced wear-resistant PE water supply pipe for trenchless construction and preparation method thereof |
| CN113833918A (en) * | 2021-08-27 | 2021-12-24 | 北京工业大学 | Lining structure of high-pressure water injection composite pipeline in oil field |
-
2009
- 2009-12-17 CN CN2009202551111U patent/CN201561199U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101725774B (en) * | 2009-12-17 | 2011-07-27 | 河北金菱管业股份有限公司 | Mine wear-resistant composite metal plastic pipe, special preparation equipment thereof and preparation method thereof |
| WO2013033465A1 (en) * | 2011-08-30 | 2013-03-07 | E. I. Du Pont De Nemours And Company | Multilayer protective liner |
| CN103747950A (en) * | 2011-08-30 | 2014-04-23 | 纳幕尔杜邦公司 | Multilayer protective liner |
| CN103747950B (en) * | 2011-08-30 | 2016-03-16 | 纳幕尔杜邦公司 | multilayer protective liner |
| CN106496722A (en) * | 2016-09-26 | 2017-03-15 | 中国科学院兰州化学物理研究所 | Compound pipeline complex pipeline and its preparation technology |
| CN106481933A (en) * | 2016-11-03 | 2017-03-08 | 江苏昊晟塑业科技有限公司 | Polyethylene Foam Insulating Pipe road |
| CN108361450A (en) * | 2018-01-30 | 2018-08-03 | 廊坊德源建材有限公司 | Wet desulphurization mineral slurry conveys the corrosion-resistant multiple tube of high abrasion and preparation |
| CN108916535A (en) * | 2018-08-30 | 2018-11-30 | 天津开发区天水华源机电设备技术有限公司 | A kind of flexible compound liner pipe fitting |
| CN112325001A (en) * | 2020-10-29 | 2021-02-05 | 安徽杰蓝特新材料有限公司 | Reinforced wear-resistant PE water supply pipe for trenchless construction and preparation method thereof |
| CN113833918A (en) * | 2021-08-27 | 2021-12-24 | 北京工业大学 | Lining structure of high-pressure water injection composite pipeline in oil field |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100825 Termination date: 20131217 |