CN102211407B - Manufacturing method of pipeline elbow made of composite material - Google Patents
Manufacturing method of pipeline elbow made of composite material Download PDFInfo
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- CN102211407B CN102211407B CN 201110140482 CN201110140482A CN102211407B CN 102211407 B CN102211407 B CN 102211407B CN 201110140482 CN201110140482 CN 201110140482 CN 201110140482 A CN201110140482 A CN 201110140482A CN 102211407 B CN102211407 B CN 102211407B
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- unidirectional fibre
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Abstract
The invention provides a manufacturing method of a pipeline elbow made of a composite material, which comprises the following steps of: producing an integral elbow male die, wherein the diameter of the integral elbow male die is 6-10mm larger than that of an elbow die, and producing an inner one-way fiber shell and an outer one-way fiber shell on the integral elbow male die, wherein centering angles of cross sections of the inner one-way fiber shell and the outer one-way fiber shell are 90-180 DEG; producing a lining layer on the elbow die by using one layer of surface mat, two layers of chopped strand mats and annularly wound continuous fiber winding yarns, wherein the outer diameter of the lining layer is equal to the diameter of the integral elbow male die; mounting the inner one-way fiber shell and the outer one-way fiber shell on the lining layer, and arranging the continuous fiber winding yarns and roving cloths alternately to reach a designed thickness; and demolding the elbow die to complete the production after the curing. In the invention, the of designability advantage of the composite material is sufficiently utilized, a laminated structure is optimized, the capacity of bearing a draw-press stress produced by a bending moment of the elbow is improved, risks of leakage and fracture of the elbow are reduced, weak links in a glass steel pipeline are solved, and the stability of the whole pipeline is improved.
Description
Technical field
The present invention relates to a kind of manufacturing technology of channel bend, particularly a kind of minor diameter (manufacture method of composite material conduit elbow of D≤450mm).
Background technology
(the composite material conduit elbow of D≤450mm), the manufacture method that adopts is to use unidirectional fibre and grid cloth to carry out hoop at the elbow formpiston of having made to twine, treat the resin solidification aftershaping now for minor diameter.For the composite material elbow that this technology is made, the intensity between the fibre bundle is with much lower along the intensity of machine direction.When pipeline is subjected to higher interior pressure or water hammer, is easy to generate crackle between hoop fibre bundle and the woven roving overlap joint, thereby causes seepage or break.
Summary of the invention
The technical problem to be solved in the present invention is at the deficiencies in the prior art, has proposed a kind ofly to prevent the elbow seepage, break, and improves the manufacture method of the composite material conduit elbow of reliability of products.
The technical problem to be solved in the present invention is achieved through the following technical solutions, and a kind of manufacture method of composite material conduit elbow is characterized in:
⑴ in make, outer unidirectional fibre shell: make an one piece elbow formpiston than the big 6 ~ 10mm of diameter of elbow module, lay release cloth on the surface of one piece elbow formpiston earlier, lay the unidirectional fibre yarn of resin impregnated at medial surface and the lateral surface of one piece elbow formpiston then, the direction that the unidirectional fibre yarn is laid is to lay to the direction of another end face along an end face of one piece elbow formpiston, the shop layer thickness of unidirectional fibre yarn is 3mm-10mm, outer surface at the shop of unidirectional fibre yarn layer is laid outside release cloth, treat curing and demolding, in finishing, the making of outer unidirectional fibre shell;
⑵ make inner liner: the surperficial felt of spreading one deck resin impregnated on elbow module earlier, repave the weak point that two layers of resin soaks into and cut felt, tie tight with gauze, the hoop continuous fiber that twines resin impregnated twines yarn then, when making the equal diameters of the external diameter of inner liner and above-mentioned one piece elbow formpiston, stop to twine;
⑶ make outer shell: the inside and outside unidirectional fibre shell that will make is contained on the inner liner, hoop twines the continuous fiber winding yarn of one deck resin impregnated then, re-lay the woven roving of one deck resin impregnated, press later the sequence alternate laying that one deck continuous fiber twines yarn, one deck woven roving, up to the thickness that reaches design;
⑷ curing and demolding is finished making.
The technical problem to be solved in the present invention can also be come to realize that further the centering angle of inside and outside unidirectional fibre shell cross section is 90 ~ 180 ° by the following technical programs.
The present invention compared with prior art, stretching, compressive strength for the interior outside of improving elbow arrange the unidirectional fibre shell between inner liner and outer shell.The linearity of unidirectional yarn is very good, the hot strength height, and tension and compression deformation is little.The present invention has taken full advantage of the advantage of composite designability, has optimized shop layer structure; Improved elbow and born the ability of the tension and compression stress of moment of flexure generation, thereby reduced the seepage of composite material elbow, the risk of breaking, the rate of reducing the number of rejects and seconds improves reliability of products; Solve weak link in the glass steel pipeline, improved the stability of whole piece pipeline.
The specific embodiment
A kind of manufacture method of composite material conduit elbow,
⑴ make inside and outside unidirectional fibre shell: make an one piece elbow formpiston than the big 6 ~ 10mm of diameter of elbow module; Use hand to stick with paste technology, lay release cloth on the surface of one piece elbow formpiston earlier, lay the unidirectional fibre yarn of resin impregnated at medial surface and the lateral surface of one piece elbow formpiston then.The direction that the unidirectional fibre yarn is laid is to lay to the direction of another end face along an end face of one piece elbow formpiston, the shop layer thickness of unidirectional fibre yarn is 3mm-10mm, outer surface at the shop of unidirectional fibre yarn layer is laid outside release cloth, treat curing and demolding, finish the making of inside and outside unidirectional fibre shell;
One piece elbow formpiston medial surface is namely towards a side of the center of curvature, and lateral surface i.e. a side of the center of curvature dorsad.The centering angle of inside and outside unidirectional fibre shell cross section is 90 ~ 180 °;
⑵ make inner liner: the surperficial felt of spreading one deck resin impregnated on elbow module earlier, repave the weak point that two layers of resin soaks into and cut felt, tie tight with gauze, the hoop continuous fiber that twines resin impregnated twines yarn then, when making the equal diameters of the external diameter of inner liner and above-mentioned one piece elbow formpiston, stop to twine;
⑶ make outer shell: the inside and outside unidirectional fibre shell that will make is contained on the inner liner, hoop twines the continuous fiber winding yarn of one deck resin impregnated then, re-lay the woven roving of one deck resin impregnated, press later the sequence alternate laying that one deck continuous fiber twines yarn, one deck woven roving, up to the thickness that reaches design;
⑷ curing and demolding is finished making.
The manufacture method of composite material conduit elbow of the present invention is particularly useful for the making of the elbow of diameter D≤450mm.
Claims (2)
1. the manufacture method of a composite material conduit elbow is characterized in that:
⑴ in make, outer unidirectional fibre shell: make an one piece elbow formpiston than the big 6 ~ 10mm of diameter of elbow module, lay release cloth on the surface of one piece elbow formpiston earlier, lay the unidirectional fibre yarn of resin impregnated at medial surface and the lateral surface of one piece elbow formpiston then, the direction that the unidirectional fibre yarn is laid is to lay to the direction of another end face along an end face of one piece elbow formpiston, the shop layer thickness of unidirectional fibre yarn is 3mm-10mm, outer surface at the shop of unidirectional fibre yarn layer is laid outside release cloth, treat curing and demolding, in finishing, the making of outer unidirectional fibre shell;
⑵ make inner liner: the surperficial felt of spreading one deck resin impregnated on elbow module earlier, repave the weak point that two layers of resin soaks into and cut felt, tie tight with gauze, the hoop continuous fiber that twines resin impregnated twines yarn then, when making the equal diameters of the external diameter of inner liner and above-mentioned one piece elbow formpiston, stop to twine;
⑶ make outer shell: the inside and outside unidirectional fibre shell that will make is contained on the inner liner, hoop twines the continuous fiber winding yarn of one deck resin impregnated then, re-lay the woven roving of one deck resin impregnated, press later the sequence alternate laying that one deck continuous fiber twines yarn, one deck woven roving, up to the thickness that reaches design;
⑷ curing and demolding is finished making.
2. the manufacture method of composite material conduit elbow according to claim 1, it is characterized in that: the centering angle of inside and outside unidirectional fibre shell cross section is 90 ~ 180 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110140482 CN102211407B (en) | 2011-05-27 | 2011-05-27 | Manufacturing method of pipeline elbow made of composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110140482 CN102211407B (en) | 2011-05-27 | 2011-05-27 | Manufacturing method of pipeline elbow made of composite material |
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| Publication Number | Publication Date |
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| CN102211407A CN102211407A (en) | 2011-10-12 |
| CN102211407B true CN102211407B (en) | 2013-10-09 |
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| CN 201110140482 Active CN102211407B (en) | 2011-05-27 | 2011-05-27 | Manufacturing method of pipeline elbow made of composite material |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105109076B (en) * | 2015-07-31 | 2017-09-29 | 武汉理工大学 | A kind of design and preparation method of the composite material tube deformed with macrobending |
| CN105922606B (en) * | 2016-05-23 | 2018-06-08 | 苏州市木易船舶设备有限公司 | The winding shaping process of fiber glass epoxy elbow |
| CN106079475B (en) * | 2016-07-22 | 2018-08-21 | 威海光威复合材料股份有限公司 | The manufacturing method of the solid head tube material of one end closure of composite material |
| CN114440051A (en) * | 2020-11-04 | 2022-05-06 | 中国石油化工股份有限公司 | Electrothermal repair method for glass steel tube |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101204770A (en) * | 2007-01-15 | 2008-06-25 | 北京安科管道工程科技有限公司 | Pressure structure clamp and fiber compound material combination expander technology |
| CN101328993A (en) * | 2007-08-17 | 2008-12-24 | 大连宇星净水设备有限公司 | Glass fiber reinforced plastic pressure pipe and preparing method thereof |
| CN101758621A (en) * | 2008-12-25 | 2010-06-30 | 哈尔滨理工大学 | Composite material elbow winding machine control mechanism and winding method thereof |
| CN101793338A (en) * | 2010-03-10 | 2010-08-04 | 华瀚科技有限公司 | Plastic-steel spirally-wound pipe elbow and manufacturing method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK2262636T3 (en) * | 2008-03-31 | 2012-10-22 | Vestas Wind Sys As | Process for producing a laminated composite article by a winding process, related apparatus and product |
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2011
- 2011-05-27 CN CN 201110140482 patent/CN102211407B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101204770A (en) * | 2007-01-15 | 2008-06-25 | 北京安科管道工程科技有限公司 | Pressure structure clamp and fiber compound material combination expander technology |
| CN101328993A (en) * | 2007-08-17 | 2008-12-24 | 大连宇星净水设备有限公司 | Glass fiber reinforced plastic pressure pipe and preparing method thereof |
| CN101758621A (en) * | 2008-12-25 | 2010-06-30 | 哈尔滨理工大学 | Composite material elbow winding machine control mechanism and winding method thereof |
| CN101793338A (en) * | 2010-03-10 | 2010-08-04 | 华瀚科技有限公司 | Plastic-steel spirally-wound pipe elbow and manufacturing method thereof |
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| CN102211407A (en) | 2011-10-12 |
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