CN104075041A - Shaping process for prestress-reinforced composite steel tube - Google Patents
Shaping process for prestress-reinforced composite steel tube Download PDFInfo
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- CN104075041A CN104075041A CN201410011274.0A CN201410011274A CN104075041A CN 104075041 A CN104075041 A CN 104075041A CN 201410011274 A CN201410011274 A CN 201410011274A CN 104075041 A CN104075041 A CN 104075041A
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- metal tube
- moulding process
- steel tube
- prestressing force
- prestressed tendon
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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
- F16L9/00—Rigid pipes
- F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
The invention discloses a shaping process for a prestress-reinforced composite steel tube, which solves the problems of low tensile performance, bending resistance and impact resistance of the existing composite tubes, and the adopted technical scheme is as follows: the shaping process for the prestress-reinforced composite steel tube comprises preparation and installation for an inner metal tube, an outer metal tube and a location flange, pre-treatment for prestressed ribs, and mixing for composite materials; the shaping process further comprises the following steps of: a. assembling to form a tube shape; b. pouring the composite materials; c. applying a prestress; d. overall shaping. The shaping process disclosed by the invention has the beneficial effects of convenient installation, light weight, high tensile performance, bending resistance, impact resistance and anti-deformation capacity, and excellent flame-retardant anti-static performances, and can be widely used for many fields of exploitation, conveying and the like for coal mine, petroleum and natural gas.
Description
Technical field
The present invention relates to a kind of preparation process of conveyance conduit, be specifically related to the moulding process of prestressing force strengthening composite steel tube.
Background technique
A lot of fields such as colliery, oil and gas exploitation and conveying all need different bore pipeline transport gas, liquid and fluidized solid, these fields not only require pipeline to have conventional mechanical property (as bending resistance, tension, shock resistance), also need to have good chemical property (as fire-retardant, antistatic, decay resistance).
Existing metallic conduit very easily corrodes in a humid environment and loses use value, and common metal pipe is ensureing that under mechanical index condition, tube wall is thicker, weight is larger, greatly increase the difficulty of installing, make the execution of advocating the technology path taking Structural Hardware as main body run into the use under coal mine of very large difficulty, particularly large diameter pipeline.
Bulletin is that the Chinese patent of CN202158258 discloses a kind of steel reinforced type steel-plastic composite winding pipe, its basic conception is by " Π " steel band of model and coiling adhesive moulding technique, inner and outer surface coating plastic layer at steel band forms the reinforced composite steel tube of thin-walled, thereby realizes the double effects of weight reduction and guarantee mechanical index.More perfect from radial mechanical index.But, only rely on plastic hot melten gel coupling shaft to make the large degradation level of axial mechanical index to unit, comprise body integral bending and tensile strength.
Application number is that 201120387804.3 Chinese patent discloses a kind of hollow fiber-steel pipe concrete combined structure, it is made up of jointly fiber-steel pipe, concrete or reinforced concrete and interior steel pipe ecto-entad, this structural bearing capacity is high, good rigidity, ductility is good, excellent earthquake resistance, is applicable to the large scale construction element under rugged environment.But there is following technical problem in this composite structure: although concrete has stronger compressive strength, but tensile strength is low, cracking resistance is poor, opposing deformation nature is poor, the fragility of material is obvious, differ larger with the ability of anti-deformation of steel pipe and interior steel pipe, therefore, even in the time of lower tensile buckling, concrete or reinforced concrete floor very easily ftracture, cause the combination force between steel pipe, interior steel pipe and concrete less, thereby easily peel off tension, the anti-spalling of losing composite pipe between three layers.
Summary of the invention
The invention solves existing composite pipe tension, anti-deformation, problem that shock resistance is not strong, design a kind of moulding process of prestressing force strengthening composite steel tube, the inside and outside metal tube of this composite pipe is all the thin walled tubes with spiral bar that adopt lock seaming or welding procedure to process, the two ends of composite pipe are provided with the convenient installation of flange, between flange, be also provided with prestressed tendon or wire rope to improve tension, bending resistance, the shock resistance of composite pipe, between inside and outside metal tube, be filled with composite material.
The technical solution used in the present invention is: the moulding process of prestressing force strengthening composite steel tube, comprise preparation, the installation of inside and outside metal tube and locating flange, the pretreatment of prestressed tendon, composite material mixture, its key is: described moulding process also comprises following step:
A: be assembled into tubular: be sleeved on flange in the middle of inside and outside metal tube is added after adhesive and import end formation interlayer sleeve structure, tighten setscrew nut in the prestressed tendon assembly of inserting in advance;
B: perfusion composite material: the auxiliary hole perfusion composite material being processed in advance by outer metal tube;
C: prestress application: the pull bar of tensile machine is connected to the termination of every prestressed tendon, each prestressed tendon is carried out to balanced adjustment, substep are afterburning, follow-up screws setscrew nut until composite material and middle adhesive solidify;
D: integral forming: interior metal tube is applied to crimping location on flange, by outer metal pipe end opening welding location, remove stayed mast, screw anti-return nut; Plugging technology hole.
The present invention has designed prestressed tendon or wire rope in composite pipe structure, prestressed tendon or wire rope link together the flange at inside and outside metal tube two ends by nut, before filled composite materials, adjust prestressed tendon or wire rope, make prestressed tendon or wire rope be subject to pulling force, material to be composite is filled and is solidified the pulling force that rear releasing prestressed tendon or wire rope are subject to, thereby be under pressure and improve the tensility of composite pipe thereby prestressed tendon or wire rope shrink composite material after making to solidify, and prestressed tendon or wire rope the tension and the anti-deformation that have improved whole composite pipe is set, shock resistance.The flange that inside and outside metal tube two ends arrange not only can make the setting of inside and outside metal tube concentric also be convenient to prestressed tendon or wire rope to apply prestressing force, the integrated installation that facilitates composite pipe of flange and metal tube.That the inside and outside wall of composite pipe is also coated with is fire-retardant, antistatic coating or wear-resistant paint, makes this composite pipe have good flame-retardant and anti-static performance.
The invention has the beneficial effects as follows: one, metal tube two ends are provided with flange convenient installation; Two, between two end flange, be provided with prestressed tendon or wire rope, greatly improved the tension of composite pipe, anti-deformation, shock resistance; Three, the outer surface of the internal surface of interior metal tube, outer metal tube increases corrosion protection, fire-retardant, antistatic, the composite bed that improves mechanical strength, makes this composite pipe have good flame-retardant and anti-static performance; Four, inside and outside metal tube is all by the thin metallic tubd of lockstitching a border or welding procedure is made into, and has alleviated the weight of composite pipe.
Below in conjunction with accompanying drawing, the present invention is described in detail.
Brief description of the drawings
Fig. 1 is the moulding process embodiment's one of prestressing force strengthening composite steel tube of the present invention structural representation;
Fig. 2 is that the moulding process embodiment two of prestressing force strengthening composite steel tube of the present invention removes the structural representation after composite bed;
Fig. 3 is the structural representation of flange in the present invention.
In accompanying drawing, the 1st, interior metal tube, the 2nd, outer metal tube, the 3rd, flange, 3-1 imports end, and 3-2 is engaging groove, and 3-3 is interior trough rim, and the 4th, prestressed tendon, 4-1 is setscrew nut, and 4-2 is anti-return nut, and 4-3 is plastic sheath, and 4-4 is powerful packing ring, 4A is wire rope, and 4A-1 is fag end clamping plate, and 4A-2 is lifting bolt, 4A-3 is packing ring, and 4A-4 is nut, and 4A-5 is anti-return nut, 4A-6 is sleeve pipe, the 5th, and composite bed, the 6th, composite material.
Embodiment
Referring to attached Fig. 1 and 2, the moulding process of prestressing force strengthening composite steel tube, comprises preparation, the installation of inside and outside metal tube and locating flange, the pretreatment of prestressed tendon 4, composite material 6 mixtures, and its key is: described moulding process also comprises following step:
A: be assembled into tubular: be sleeved on flange 3 in the middle of inside and outside metal tube is added after adhesive and import end 3-1 formation interlayer sleeve structure, tighten setscrew nut 4-1 in the prestressed tendon assembly of inserting in advance;
B: perfusion composite material 6: the auxiliary hole perfusion composite material 6 being processed in advance by outer metal tube 2;
C: prestress application: the pull bar of tensile machine is connected to the termination of every prestressed tendon 4, each prestressed tendon 4 is carried out to balanced adjustment, substep are afterburning, follow-up screws setscrew nut 4-1 until composite material 6 and middle adhesive solidify;
D: integral forming: interior metal tube 1 is applied to crimping location on flange 3, by outer metal tube 2 port welding location, remove stayed mast, screw anti-return nut 4-2; Plugging technology hole.
Described interior metal tube 1 and outer metal tube 2 are that thin-walled steel plate is by volume Welding, or galvanized sheet is shaped by lock seaming rolling machine, in in the time selecting lock seaming rolling machine to be shaped, the inwall of metal tube 1 arranges spiral bar, the outer wall of outer metal tube 2 arranges spiral bar, and the spiral bar Hand of spiral of interior metal tube 1 and outer metal tube 2 is identical or contrary.The thin metallic tubd that adopts lock seaming technique or spiral welded technique to be made into is not only lightweight, radially be subject to force intensity also larger.
After integral forming, the internal surface of the outer surface of metal tube 2 and interior metal tube 1 increases corrosion protection, fire-retardant, antistatic, the composite bed 5 that improves mechanical strength outside, and internal surface adopts coating or centrifugal pressure casting, outer surface to adopt spraying or add Filament-wound Machine technique and realize.
The thickness of described composite bed 5 is not less than the thickness of spiral bar.The thickness of composite bed 5 is not less than the thickness of spiral bar.The patency that can ensure like this fluid in composite pipe is better.
Described composite bed 5 comprises the component of following weight proportioning: 100 parts of bisphenol A epoxide resins, 15 ~ 20 parts of conductive mica powders, 0.5 ~ 2 part of EA520/562 conducting agent, 0.5 ~ 2 part of levelling agent, 0.5 ~ 2 part of Hardening anti-wear agent, 593 25 ~ 35 parts, curing agent, 0.5 ~ 3 part of adhesion promoter, 10 ~ 50 parts of fire retardants.
The formula of described composite bed 5 is referring to table 1, and in table, data are parts by weight.
Prestressed tendon 4 adopts round steel through modified, temper, and the prestressed tendon assembly forming comprises the plastic sheath 4-3, powerful packing ring 4-4, setscrew nut 4-1 and the anti-return nut 4-2 that are filled with anti-corrosive grease.Plastic sheath 4-3 can prevent that round steel from contacting with composite material, and after preventing that prestressing force from removing, round steel separates with composite material.
Prestressed tendon 4 adopts flexible multistrand rope 4A, and the structure of the prestressed tendon assembly forming comprises and is sleeved on sleeve pipe 4A-6 outside wire rope 4A and that be filled with anti-corrosive grease, fag end clamping plate 4A-1, lifting bolt 4A-2, packing ring 4A-3, nut 4A-4 and anti-return nut 4A-5.
Referring to accompanying drawing 3, described flange processes an annular groove 3-1 on 3 exterior edge faces, and the interior trough rim 3-3 height of annular groove 3-1 is identical with the thickness of powerful packing ring 4-4; Interior card and importing end 3-1 connecting part at flange 3 are processed with an engaging groove 3-2, in the step of assembling shaping, first inject mighty bond.
Described composite material 6 adopts foam cement powder and the admixture adaptation based on sulphoaluminate phase composition to form.What described foam cement powder adopted is the CSA composite water cement foaming agent that Tangshan Polar Bear Building Material Co., Ltd. produces.
In described composite material 6, add material modified graphite whisker or chopped carbon fiber or short basalt fibre or the carbon black cut of comprising.Filled composite materials 6 can improve the compression resistance of composite pipe, and the material modified fragility that can reduce composite material 6 that adds.
The present invention is in the specific implementation:
Embodiment one, referring to accompanying drawing 1, in this enforcement, adopt wire rope as prestressed tendon 4, be filled with the sleeve pipe 4A-6 of anti-corrosive grease in wire rope 4A overcoat filling.Wire rope 4A is connected with the flange 3 at inside and outside metal tube two ends by fag end clamping plate 4A-1, lifting bolt 4A-2, packing ring 4A-3, nut 4A-4 and anti-return nut 4A-5.
Embodiment two, referring to accompanying drawing 2, in the present embodiment, adopt do prestressed tendon 4 through round steel modified, temper, the two ends of round steel are provided with screw thread.Round steel is enclosed within plastic sheath 4-3 and by powerful packing ring 4-4, setscrew nut 4-1 and anti-return nut 4-2 and fixes with flange 3.
Claims (10)
1. the moulding process of prestressing force strengthening composite steel tube, comprises preparation, the installation of inside and outside metal tube and locating flange, and the pretreatment of prestressed tendon (4), composite material (6) mixture, is characterized in that: described moulding process also comprises following step:
A: be assembled into tubular: be sleeved on flange (3) in the middle of inside and outside metal tube is added after adhesive and import end (3-1) formation interlayer sleeve structure, tighten setscrew nut (4-1) in the prestressed tendon assembly of inserting in advance;
B: perfusion composite material (6): the auxiliary hole perfusion composite material (6) being processed in advance by outer metal tube (2);
C: prestress application: the pull bar of tensile machine is connected to the termination of every prestressed tendon (4), to each prestressed tendon (4) carry out balanced adjustment, substep is afterburning, follow-up screws setscrew nut (4-1) until composite material (6) and middle adhesive are curing;
D: integral forming: interior metal tube (1) is applied on flange (3) to crimping location, by outer metal tube (2) port welding location, remove stayed mast, screw anti-return nut (4-2); Plugging technology hole.
2. the moulding process of prestressing force strengthening composite steel tube according to claim 1, it is characterized in that: described interior metal tube (1) and outer metal tube (2) are that thin-walled steel plate is by volume Welding, or galvanized sheet is shaped by lock seaming rolling machine, in in the time selecting lock seaming rolling machine to be shaped, the inwall of metal tube (1) arranges spiral bar, the outer wall of outer metal tube (2) arranges spiral bar, and interior metal tube (1) is identical or contrary with the spiral bar Hand of spiral of outer metal tube (2).
3. the moulding process of prestressing force strengthening composite steel tube according to claim 1 and 2, it is characterized in that: after integral forming, the internal surface of the outer surface of metal tube (2) and interior metal tube (1) increases corrosion protection, fire-retardant, antistatic, the composite bed (5) that improves mechanical strength outside, internal surface adopts coating or centrifugal pressure casting, outer surface to adopt spraying or add Filament-wound Machine technique and realize.
4. the moulding process of prestressing force strengthening composite steel tube according to claim 3, is characterized in that: the thickness of described composite bed (5) is not less than the thickness of spiral bar.
5. the moulding process of prestressing force strengthening composite steel tube according to claim 3, it is characterized in that: described composite bed (5) comprises the component of following weight proportioning: 100 parts of bisphenol A epoxide resins, 15 ~ 20 parts of conductive mica powders, 0.5 ~ 2 part of EA520/562 conducting agent, 0.5 ~ 2 part of levelling agent, 0.5 ~ 2 part of Hardening anti-wear agent, 593 25 ~ 35 parts, curing agent, 0.5 ~ 3 part of adhesion promoter, 10 ~ 50 parts of fire retardants.
6. the moulding process of prestressing force strengthening composite steel tube according to claim 1, it is characterized in that: prestressed tendon (4) adopts round steel through modified, temper, and the prestressed tendon assembly forming comprises and is filled with the plastic sheath (4-3) of anti-corrosive grease, powerful packing ring (4-4), setscrew nut (4-1) and anti-return nut (4-2).
7. the moulding process of prestressing force strengthening composite steel tube according to claim 1, it is characterized in that: prestressed tendon (4) adopts flexible multistrand rope (4A), the structure of the prestressed tendon assembly forming comprise be sleeved on wire rope (4A) outer and the sleeve pipe (4A-6), fag end clamping plate (4A-1), lifting bolt (4A-2), packing ring (4A-3), nut (4A-4) and the anti-return nut (4A-5) that are filled with anti-corrosive grease.
8. the moulding process of prestressing force strengthening composite steel tube according to claim 1, it is characterized in that: described flange (3) processes an annular groove (3-1) on exterior edge face, interior trough rim (3-3) height of annular groove (3-1) is identical with the thickness of powerful packing ring (4-4); Interior card and importing end (3-1) connecting part at flange (3) are processed with an engaging groove (3-2), in the step of assembling shaping, first inject mighty bond.
9. the moulding process of prestressing force strengthening composite steel tube according to claim 1, is characterized in that: described composite material (6) adopts foam cement powder and the admixture adaptation based on sulphoaluminate phase composition to form.
10. the moulding process of prestressing force strengthening composite steel tube according to claim 9, is characterized in that: in described composite material (6), added material modified graphite whisker or chopped carbon fiber or short basalt fibre or the carbon black cut of comprising.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410011274.0A CN104075041B (en) | 2014-01-10 | 2014-01-10 | The moulding process of prestressing force strengthening composite steel tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410011274.0A CN104075041B (en) | 2014-01-10 | 2014-01-10 | The moulding process of prestressing force strengthening composite steel tube |
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| Publication Number | Publication Date |
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| CN104075041A true CN104075041A (en) | 2014-10-01 |
| CN104075041B CN104075041B (en) | 2016-03-23 |
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| CN201410011274.0A Expired - Fee Related CN104075041B (en) | 2014-01-10 | 2014-01-10 | The moulding process of prestressing force strengthening composite steel tube |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1181116A (en) * | 1966-06-29 | 1970-02-11 | Baustahlgewebe Gmbh | Improvements in or relating to Reinforcements for Pipes or Other Hollow Cylindrical Concrete Structures |
| GB2254629A (en) * | 1991-04-10 | 1992-10-14 | Bekaert Sa Nv | Helically windable reinforcing strip,e.g. for concrete round a pipe |
| JPH08260448A (en) * | 1995-03-22 | 1996-10-08 | P S Co Ltd | Pressure-resistant cylindrical pipe and laying method thereof |
| CN201297453Y (en) * | 2008-10-28 | 2009-08-26 | 张东才 | Pre-stressed concrete well pipe |
| CN202132619U (en) * | 2011-06-30 | 2012-02-01 | 天津市银龙预应力钢材集团有限公司 | Pre-stressed reinforced concrete casing pipe |
-
2014
- 2014-01-10 CN CN201410011274.0A patent/CN104075041B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1181116A (en) * | 1966-06-29 | 1970-02-11 | Baustahlgewebe Gmbh | Improvements in or relating to Reinforcements for Pipes or Other Hollow Cylindrical Concrete Structures |
| GB2254629A (en) * | 1991-04-10 | 1992-10-14 | Bekaert Sa Nv | Helically windable reinforcing strip,e.g. for concrete round a pipe |
| JPH08260448A (en) * | 1995-03-22 | 1996-10-08 | P S Co Ltd | Pressure-resistant cylindrical pipe and laying method thereof |
| CN201297453Y (en) * | 2008-10-28 | 2009-08-26 | 张东才 | Pre-stressed concrete well pipe |
| CN202132619U (en) * | 2011-06-30 | 2012-02-01 | 天津市银龙预应力钢材集团有限公司 | Pre-stressed reinforced concrete casing pipe |
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| CN104075041B (en) | 2016-03-23 |
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Granted publication date: 20160323 Termination date: 20210110 |