CN107477266A - Double-wall corrugated pipe - Google Patents
Double-wall corrugated pipe Download PDFInfo
- Publication number
- CN107477266A CN107477266A CN201710817856.1A CN201710817856A CN107477266A CN 107477266 A CN107477266 A CN 107477266A CN 201710817856 A CN201710817856 A CN 201710817856A CN 107477266 A CN107477266 A CN 107477266A
- Authority
- CN
- China
- Prior art keywords
- wall
- double
- convex portion
- corrugated pipe
- recess
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- 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
- F16L9/12—Rigid pipes of plastics with or without reinforcement
- F16L9/133—Rigid pipes of plastics with or without reinforcement the walls consisting of two layers
Abstract
The invention provides a kind of double-wall corrugated pipe, including：Outer wall and inwall, the outer wall is tubular, the convex portion of ring-type first and the first recess are alternatively formed along the length direction of the outer wall, the inwall is straight-tube shape, it is sheathed in the outer wall, is connected with first recess, the first cavity is formed between first convex portion, the outer wall material is HDPE, and the inwall material is LDPE.Double-wall corrugated pipe provided by the invention, outer wall are ripple struction and the use of HDPE are former material, ensure that the ring rigidity of outer wall, internal layer is former material using LDPE, reduces bending stiffness.
Description
Technical field
The present invention relates to pipe technology field, is a kind of double-wall corrugated pipe specifically, applied to co-layer draining and assembling
Formula construction drainage.
Background technology
Double-wall corrugated pipe is mainly used in：It is the draining in city, drainage project, drainage engineering, field irrigation, sand control engineering, low
Press water system, municipal drainage, the transformation of blow-off line, electric wire, the buried sheath etc. of cable.Existing double-wall corrugated pipeline is
Interior walls be smooth, the structure that outer wall is bellows-shaped, are integrated between the trough section and inwall of outer wall by high temperature extrusion bonding.Outside
Wall wave structure in a ring, greatly strengthen the ring stiffness of tubing, so as to enhance resistance of the pipeline to soil load.Reach
To same ring stiffness bellows material 50%~70% is saved than solid wall pipe.
Can being divided into UPVC double-wall corrugated pipes and HDPE according to material, (High Density Polyethylene, high density are gathered
Ethene) double-wall corrugated pipe.UPVC double-wall corrugated pipes, also referred to as PVC-U double-wall corrugated pipes, are added by primary raw material of polyvinyl chloride
Work produces.HDPE double-wall corrugated pipes, also known as polyethylene double-wall corrugated pipe, produced by Raw material processing of high density polyethylene (HDPE).
Using identical material, and mechanical strength is higher.
The existing double-wall corrugated pipeline rigidity of structure is strong, poor toughness, it is impossible to and bend, be all several meters or more than ten meters long one,
Transport, link cost are high, and difficulty of construction is big；In addition, for construction drainage pipeline, pipe fitting is more and needs to cut, positions, calculates company
The process such as connect, it is relatively complicated；Phenomena such as some sanitary apparatus can not be accurately positioned also be present..
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of double-wall corrugated pipe, reduces its bending stiffness, is applied so as to reduce
Work difficulty, construction cost, reduce construction period.
In order to solve the above technical problems, the invention provides a kind of double-wall corrugated pipe, including：Outer wall and inwall, it is described outer
Wall is tubular, is alternatively formed the convex portion of ring-type first and the first recess along the length direction of the outer wall, the inwall is straight tube
Shape, it is sheathed in the outer wall, is connected with first recess, the first cavity is formed between first convex portion, it is described interior
Wall material matter is LDPE (Low-Density Polyethylene, low density polyethylene (LDPE)).
Further, the outer wall material is HDPE.
Further, first recess is tubular, and it is convex to be alternatively formed ring-type second along the length direction of the outer wall
Portion and the second recess, the inwall are connected with second recess, and the second cavity is formed between second convex portion.
Further, second convex portion is that arc-shaped is recessed to inner side for arc-shaped to outer projection, second recess
Enter.
Further, first recess includes second convex portion and two described second positioned at its both sides
Recess.
Further, it is additionally provided with least one groove on first recess.
Further, the groove is arc-shaped.
Further, the outer wall wall thickness is 0.05~0.14 times of double-wall corrugated pipe nominal diameter, two neighboring described
First convex portion spacing is 0.5~1.4 times of the outer wall wall thickness, the length of length direction of first convex portion in the outer wall
For 0.2~0.7 times of first convex portion spacing.
Further, the outer wall wall thickness is 0.07~0.1 times of double-wall corrugated pipe nominal diameter, two neighboring described the
One convex portion spacing is 0.7~1 times of the outer wall wall thickness, and the length of length direction of first convex portion in the outer wall is institute
State the first convex portion spacing 0.3~0.5 times.
Further, the outer wall wall thickness is 0.09 times of double-wall corrugated pipe nominal diameter, and two neighboring described first is convex
Portion's spacing is 0.9 times of the outer wall wall thickness, and the length of length direction of first convex portion in the outer wall is described first
0.4 times of convex portion spacing.
Double-wall corrugated pipe provided by the invention, outer wall is ripple struction and the use of HDPE is former material, ensure that outer wall
Ring rigidity, internal layer is former material using LDPE, reduces bending stiffness, convenient bending.Arranged for co-layer draining and assembled architecture
Water, double-wall corrugated pipe provided by the invention can arbitrarily be bent, and save the pipe fittings such as elbow, and a such as toilet only needs the row of concentration
Water accessory, without other pipe fittings, greatly save the engineering time；Double-wall corrugated pipe of the present invention can arbitrarily be bent, and greatly improved and defended
The location accuracy of raw utensil etc..
Brief description of the drawings
Fig. 1 is the structural representation of double-wall corrugated pipe of the present invention；
Fig. 2 is the enlarged drawing of partial view A in Fig. 1；
Fig. 3 is the optional embodiment one of the first recess in double-wall corrugated pipe of the present invention；
Fig. 4 is the optional embodiment two of the first recess in double-wall corrugated pipe of the present invention；
Fig. 5 is the optional embodiment three of the first recess in double-wall corrugated pipe of the present invention；
Fig. 6 is double-wall corrugated pipe bending state structural representation of the present invention.
In figure, 1. inwalls, 2. first convex portions, 3. first recesses, 31. grooves, 32. second convex portions, 33. second recesses, 34.
Two cavitys, 4. first cavitys.
Embodiment
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings, so that those skilled in the art can be with
More fully understand the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
A kind of double-wall corrugated pipe, as depicted in figs. 1 and 2, including：Outer wall and inwall 1, the outer wall is tubular, along institute
The length direction for stating outer wall is alternatively formed ring-type the first convex portion 2 and the first recess 3, and the inwall 1 is straight-tube shape, is sheathed on described
In outer wall, it is connected with first recess 3, the first cavity 4 is formed between first convex portion 2, the outer wall material is
HDPE, the material of inwall 1 are LDPE.
The material of inwall 1 is LDPE, and flexible material is easy to bend.Outer wall material selection HDPE, utilize its excellent mechanicalness
Can, there is provided ring stiffness.In addition, as shown in fig. 6, outer wall is ripple struction, on the outside of outside sweep, ripple broadens, curved interior, ripple
Compress, closely coupled between ripple, beyond bent portion, ripple is without deformation.Meanwhile bent portion, the rounding off of inwall 1, nothing
Abnormal deformation.
Production method：Double-wall corrugated pipe uses two single screw extrusion machine plasticized extrudate material, through composite machine head by material
Extrude and form two layers of wall thickness uniformly concentric base pipe, into forming machine in block combiner forming cavity, outer layer and module it
Between vacuumize, outer layer is close to module, while the charged air pressure between internal layer and outer layer, make ectonexine at crest point
From pressing the ectonexine at trough in the presence of sizing plug row module, so as to form concavo-convex double of interior walls be smooth, outer wall
Wall bellows.
In the present embodiment, outer wall is ripple struction and the use of HDPE is former material, ensure that the ring rigidity of outer wall, and internal layer makes
It is former material with LDPE, reduces bending stiffness.
In the optional embodiment of the present embodiment one, the first recess 3 is tubular as described in Figure 5, along the length of the outer wall
Direction is alternatively formed ring-type the second convex portion 32 and the second recess 33, and the inwall 1 is connected with second recess 33, with described
The second cavity 34 is formed between two convex portions 32.In present embodiment, the shape of the second convex portion 32 and the second recess 33 can be ladder
Shape, circular shape or other shapes, it is preferable that be shaped as arc-shaped.As shown in figure 5, second convex portion 32 be arc-shaped to
Outer projection, second recess 33 are that arc-shaped is recessed to inner side.In present embodiment, the first recess 3 similarly uses ripple
Line structure, the rigidity of its radial direction is on the one hand strengthened, on the other hand, reduce further the bending stiffness of double-wall corrugated pipe.
In the optional embodiment of the present embodiment one, first recess 3 includes second convex portion 32 and is located at
Two second recesses 33 of its both sides.
In the optional embodiment of the present embodiment one, as shown in Figure 3 and Figure 4, at least one is additionally provided with first recess 3
Individual groove 31.Groove 31 on the first recess 3 in a ring.Groove 31 is arranged at the outside or inner side of the first recess 3.It can set more
Individual groove 31, outside not only it had been arranged at but also had been arranged at inner side, and staggered in double-wall corrugated pipe length direction put between each other.Groove 31 is set
Purpose be for further reduce the first recess 3 mechanical strength, so as to reduce the bending stiffness of double-wall corrugated pipe.For groove 31
Cross sectional shape be not restricted, can be with rectangle, polygon or circular arc, it is preferable that the cross sectional shape of groove 31 is arc-shaped.Circular arc
Shape will not cause to produce stress concentration in BENDING PROCESS, cause to be broken.
In the optional embodiment of the present embodiment one, as shown in figure 1, the outer wall wall thickness h is double-wall corrugated pipe nominal diameter
0.05~0.14 times of dn, the two neighboring spacing k1 of first convex portion 2 is 0.5~1.4 times of the outer wall wall thickness h, described
First convex portion 2 is in 0.2~0.7 times that the length k2 of the length direction of the outer wall is the first convex portion spacing k1.Preferably,
The outer wall wall thickness h is 0.07~0.1 times of double-wall corrugated pipe nominal diameter dn, the two neighboring spacing k1 of first convex portion 2
For 0.7~1 times of the outer wall wall thickness h, the length k2 of length direction of first convex portion 2 in the outer wall is described first
0.3~0.5 times of the spacing k1 of convex portion 2.Preferably, the outer wall wall thickness h is 0.09 times of double-wall corrugated pipe nominal diameter dn, phase
Adjacent two spacing k1 of the first convex portion 2 are 0.9 times of the outer wall wall thickness h, length of first convex portion 2 in the outer wall
The length k2 in direction is 0.4 times of the spacing k1 of the first convex portion 2.
Double-wall corrugated pipe provided by the invention, outer wall is ripple struction and the use of HDPE is former material, ensure that outer wall
Ring rigidity, internal layer is former material using LDPE, reduces bending stiffness.
Protection scope of the present invention not limited to this.What those skilled in the art were made on the basis of the present invention is equal
Substitute or convert, within protection scope of the present invention.Protection scope of the present invention is defined by claims.
Claims (10)
- A kind of 1. double-wall corrugated pipe, it is characterised in that including：Outer wall and inwall, the outer wall is tubular, along the outer wall Length direction is alternatively formed the convex portion of ring-type first and the first recess, and the inwall is straight-tube shape, is sheathed in the outer wall, with institute The connection of the first recess is stated, the first cavity is formed between first convex portion, the inwall material is LDPE.
- 2. double-wall corrugated pipe as claimed in claim 1, it is characterised in that the outer wall material is HDPE.
- 3. double-wall corrugated pipe as claimed in claim 1, it is characterised in that first recess is tubular, along the outer wall Length direction be alternatively formed the convex portion of ring-type second and the second recess, the inwall is connected with second recess, with described The second cavity is formed between two convex portions.
- 4. double-wall corrugated pipe as claimed in claim 3, it is characterised in that second convex portion be arc-shaped to outer projection, Second recess is that arc-shaped is recessed to inner side.
- 5. double-wall corrugated pipe as claimed in claim 3, it is characterised in that first recess includes：One described second convex Portion and two second recesses positioned at its both sides.
- 6. double-wall corrugated pipe as claimed in claim 1, it is characterised in that be additionally provided with first recess at least one Groove.
- 7. double-wall corrugated pipe as claimed in claim 6, it is characterised in that the groove is arc-shaped.
- 8. the double-wall corrugated pipe as described in claim 1~7 is any, it is characterised in that the outer wall wall thickness is double-wall corrugated pipe 0.05~0.14 times of nominal diameter, two neighboring first convex portion spacing are 0.5~1.4 times of the outer wall wall thickness, institute The first convex portion is stated in 0.2~0.7 times that the length of the length direction of the outer wall is first convex portion spacing.
- 9. double-wall corrugated pipe as claimed in claim 8, it is characterised in that the outer wall wall thickness is double-wall corrugated pipe nominal diameter 0.07~0.1 times, two neighboring first convex portion spacing is 0.7~1 times of the outer wall wall thickness, and first convex portion exists The length of the length direction of the outer wall is 0.3~0.5 times of first convex portion spacing.
- 10. double-wall corrugated pipe as claimed in claim 9, it is characterised in that the outer wall wall thickness is that double-wall corrugated pipe nominal is straight 0.09 times of footpath, two neighboring first convex portion spacing are 0.9 times of the outer wall wall thickness, and first convex portion is described outer The length of the length direction of wall is 0.4 times of first convex portion spacing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710817856.1A CN107477266B (en) | 2017-09-12 | 2017-09-12 | Double-wall corrugated pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710817856.1A CN107477266B (en) | 2017-09-12 | 2017-09-12 | Double-wall corrugated pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107477266A true CN107477266A (en) | 2017-12-15 |
| CN107477266B CN107477266B (en) | 2020-03-06 |
Family
ID=60585214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710817856.1A Active CN107477266B (en) | 2017-09-12 | 2017-09-12 | Double-wall corrugated pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107477266B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108019572A (en) * | 2018-01-23 | 2018-05-11 | 北京拓普天品科技有限公司 | Band and its bellows of making |
| CN110067893A (en) * | 2019-04-30 | 2019-07-30 | 哈尔滨工程大学 | A kind of double-wall corrugated tubular type pipelines in deep sea connector |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2766431Y (en) * | 2005-03-01 | 2006-03-22 | 林廷海 | Wiring box |
| CN202195184U (en) * | 2011-08-15 | 2012-04-18 | 大连三垒机器股份有限公司 | Elastic double-wall corrugated pipe |
| CN202203542U (en) * | 2011-08-29 | 2012-04-25 | 长春高祥特种管道有限公司 | PE double-walled flexible corrugated pipe |
| US20150136255A1 (en) * | 2013-11-19 | 2015-05-21 | Advanced Drainage Systems, Inc. | Pipe having slits |
| CN105156777A (en) * | 2015-08-20 | 2015-12-16 | 孔少云 | High-ring-stiffness LDPE hole-free double-wall corrugated pipe and manufacturing method thereof |
-
2017
- 2017-09-12 CN CN201710817856.1A patent/CN107477266B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2766431Y (en) * | 2005-03-01 | 2006-03-22 | 林廷海 | Wiring box |
| CN202195184U (en) * | 2011-08-15 | 2012-04-18 | 大连三垒机器股份有限公司 | Elastic double-wall corrugated pipe |
| CN202203542U (en) * | 2011-08-29 | 2012-04-25 | 长春高祥特种管道有限公司 | PE double-walled flexible corrugated pipe |
| US20150136255A1 (en) * | 2013-11-19 | 2015-05-21 | Advanced Drainage Systems, Inc. | Pipe having slits |
| CN105156777A (en) * | 2015-08-20 | 2015-12-16 | 孔少云 | High-ring-stiffness LDPE hole-free double-wall corrugated pipe and manufacturing method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108019572A (en) * | 2018-01-23 | 2018-05-11 | 北京拓普天品科技有限公司 | Band and its bellows of making |
| CN110067893A (en) * | 2019-04-30 | 2019-07-30 | 哈尔滨工程大学 | A kind of double-wall corrugated tubular type pipelines in deep sea connector |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107477266B (en) | 2020-03-06 |
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