CN209587380U - Plastic double-walled corrugated pipe - Google Patents
Plastic double-walled corrugated pipe Download PDFInfo
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- CN209587380U CN209587380U CN201920120311.XU CN201920120311U CN209587380U CN 209587380 U CN209587380 U CN 209587380U CN 201920120311 U CN201920120311 U CN 201920120311U CN 209587380 U CN209587380 U CN 209587380U
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- pipeline section
- corrugated pipe
- plastic double
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- 229920003023 plastic Polymers 0.000 title claims abstract description 59
- 239000004033 plastic Substances 0.000 title claims abstract description 59
- 239000007787 solid Substances 0.000 claims abstract description 34
- 238000003466 welding Methods 0.000 claims description 15
- 239000012943 hotmelt Substances 0.000 claims description 9
- 230000008901 benefit Effects 0.000 abstract description 12
- 229920001903 high density polyethylene Polymers 0.000 description 8
- 239000004700 high-density polyethylene Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 238000010276 construction Methods 0.000 description 4
- 230000007704 transition Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
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- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The utility model discloses a kind of plastic double-walled corrugated pipes, plastic double-walled corrugated pipe includes inner and outer wall, plastic double-walled corrugated pipe is equipped with main body pipeline section, the both ends of main body pipeline section are respectively connected with gradient pipe segment, the outer end of gradient pipe segment is connected with solid wall pipeline section, the height of the wave crest of main body pipeline section outer wall is equal, the pitch of waves is equal and outer wall thickness is constant, and the height of the wave crest of gradient pipe segment outer wall gradually becomes smaller along main body pipeline section to the direction of solid wall pipeline section, the pitch of waves gradually becomes smaller and outer wall thickness gradually increases.Plastic double-walled corrugated pipe increases the wall thickness of solid wall pipeline section, keeps plastic double-walled corrugated pipe connection reliable, and be able to bear at the same time biggish external pressure and internal pressure, and has the advantages that light-weight, high pressure resistant, good toughness, anti-seismic performance are strong and integral loop flexibility is good.
Description
Technical field
The utility model belongs to plastic pipe technical field, and in particular to a kind of plastic double-walled corrugated pipe.
Background technique
HDPE full name in English: " High Density Polyethylene ", Chinese is high density polyethylene (HDPE), is one
Kind crystallinity height, nonpolar thermoplastic resin, are plastic tube made of raw material HDPE.HDPE plastic pipe and cast iron pipe and
Traditional tubing such as coating steel pipe is compared, have it is light-weight, corrosion-resistant, small flow resistance, energy saving, simple installation is rapid,
The more low significant advantage of cost, receives liking for pipeline engineering circle, and gradually replaces conventional plastic double-wall corrugated pipe.
Currently, it is primary raw material through extrusion molding that double-wall corrugated pipe majority in the market, which is by high density polyethylene (HDPE), in
Wall is smooth, outer wall ripple, and the adjacent crest height of the outer wall of general double-wall corrugated pipe is constant and the pitch of waves is constant.Can totally it divide
For two major classes, first is that double-wall corrugated pipe, another kind with flaring are the double-wall corrugated pipes without flaring, existing bellows is general
It is able to bear biggish external pressure, but is less able to bear internal pressure.And the double-wall corrugated pipe style sheet one produced in the prior art,
Manufacturing cost is high.
Common connection type between existing double-wall corrugated pipe plastic pipe has: clamping hoop type, hot melten type and plug-in type.
Clamping hoop type connection is the pipeline connected will to be needed to be connected together using clip, commonly used in the double-walled without flaring
Connection between bellows, although the stability and good airproof performance of clamp connection, the single parts price of clip is higher.
Plug-in type is will to have in the flaring for the double-wall corrugated pipe being flared without the insertion of the double-wall corrugated pipe of flaring, and expanding
Sealing ring is set between mouth and connection-peg, prevents junction from revealing.But the existing plastic double-wall ripple with flaring
Pipe is not easy to install in grafting tubing, the problems such as flaring cracking easily occurs, and with the increase of use time, sealing ring holds
It is easy to aging, cause grafting combination to be easy to appear the problem of tubing bellows disconnects, liquid is revealed.And the plastics with flaring are double
Wall bellows needs that one section will be cut away according to construction size for connection at plastic double-wall corrugated pipe enlarging, cuts away in production
This section will be handled as waste material, lead to the waste of material.
Hot melten type connection mainly has: hot melt spigot-and-socket connection is connected with hot melt butt welding, is with hot-melting tool respectively by two need
The tubing to be connected is heated to molten condition, is then attached, thus make two plastic double-walled corrugated pipes synthesize one it is whole
Body.Hot melten type connection has high fusion compactness and intensity, and connection protection is high.But hot melten type connects double to the plastics of weld
Wall bellows wall thickness has higher requirements, be easy to happen if plastic double-walled corrugated pipe wall thickness is small cracking or can not welding.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of plastic double-walled corrugated pipes, increase plastic double-wall wave
Line pipe junction wall thickness keeps plastic double-walled corrugated pipe connection reliable.
A kind of plastic double-walled corrugated pipe, the plastic double-walled corrugated pipe include inner and outer wall, which is characterized in that
The plastic double-walled corrugated pipe is equipped with main body pipeline section, and the both ends of the main body pipeline section are respectively connected with gradient pipe segment, institute
The outer end for stating gradient pipe segment is connected with solid wall pipeline section, and the height of the wave crest of the main body pipeline section outer wall is equal, the pitch of waves is equal and outer
Wall thickness is constant, along the main body pipeline section to the direction of the solid wall pipeline section height of the wave crest of the gradient pipe segment outer wall by
Gradual change is small, the pitch of waves gradually becomes smaller and outer wall thickness gradually increases.
Preferably, the plastic double-walled corrugated pipe is at the main body pipeline section, the gradient pipe segment and the solid wall pipeline section
Inner wall thickness it is identical.
Preferably, the plastic double-walled corrugated pipe inner wall thickness at the gradient pipe segment gradually increases, the solid wall
Double-wall corrugated pipe inner wall thickness at pipeline section is greater than inner wall thickness and the main body pipeline section inner wall thickness at the gradient pipe segment.
Preferably, the two adjacent plastic double-walled corrugated pipe hot melt butt welding connection, the end of the solid wall pipeline section is set as
Welding ends.
Compared with prior art, the utility model has the beneficial effects that
1) plastic double-walled corrugated pipe is equipped with main body pipeline section, and the both ends of main body pipeline section are respectively connected with gradient pipe segment, gradient pipe segment
Outer end be connected with solid wall pipeline section, when plastic double-walled corrugated pipe connects, the end of solid wall pipeline section heats electric smelting interface tool as it
There is weldability and be not susceptible to crack, connection is reliable when welding, and hot melt butt welding connection seam will not be due to the movement of soil
Or load effect and disconnect, welding procedure is simple, and easy for construction, pipe joint is high-quality, is not required to additional connecting pipe, work
The advantages that journey comprehensive cost low.Solve the problems, such as that bonding strength is low in prior art ripple pipe construction, connection sealing ring is easy to aging.
2) main body pipeline section outer wall is equipped with annular corrugated, remains that existing bellows is light-weight, high pressure resistant, good toughness, antidetonation
The advantage that performance is strong and critical external compressive resistance ability is strong.Solid wall pipeline section outer wall wall thickness increases, and intensity is higher than traditional bellows, and has good
The ability of good anti-internal pressure and critical external compressive resistance.The pitch of waves of the plastic double-walled corrugated pipe outer wall of gradient pipe segment is gradually reduced, crest height
It gradually becomes smaller, wall thickness accordingly gradually thickens, and is gradually transitions the double-deck solid wall pipe structure of not wave crest, has both plastic double-wall ripple
The advantages of pipe main body pipeline section and solid wall pipeline section, and preferable transitional function is played, so that double-wall corrugated pipe integral loop flexibility
Preferably.Therefore, plastic double-walled corrugated pipe is able to bear at the same time biggish external pressure and internal pressure, and light-weight, high pressure resistant, toughness
Advantage good, anti-seismic performance is strong and integral loop flexibility is good.
In conclusion plastic double-walled corrugated pipe increases the wall thickness of solid wall pipeline section, keep plastic double-walled corrugated pipe connection reliable,
And it is able to bear at the same time biggish external pressure and internal pressure, and light-weight, high pressure resistant, good toughness, anti-seismic performance be strong and integral loop flexibility
Good advantage.
Detailed description of the invention
Fig. 1 is the plastic double-walled corrugated pipe structural schematic diagram of the utility model embodiment one；
Fig. 2 is the plastic double-walled corrugated pipe structural schematic diagram of the utility model embodiment two；
In figure: a- inner wall, b- outer wall, 1- main body pipeline section, 2- gradient pipe segment, 3- solid wall pipeline section, T1The pitch of waves, T2The pitch of waves,
H1The height of wave crest, H2The height of wave crest.
Specific embodiment
Technical solutions of the utility model are described in detail in the following with reference to the drawings and specific embodiments, with further
Understand the purpose of this utility model, scheme and effect, but is not intended as the limit of the appended claims for the utility model protection scope
System.
Embodiment one
Fig. 1 is the structural schematic diagram of the plastic double-walled corrugated pipe of the utility model embodiment one, plastic double-walled corrugated pipe packet
Inner wall a and outer wall b are included, double-wall corrugated pipe is equipped with main body pipeline section 1, gradient pipe segment 2 and solid wall pipeline section 3, and the both ends of main body pipeline section 1 are equal
It is connected with gradient pipe segment 2, the outer end of gradient pipe segment 2 is connected with solid wall pipeline section 3, the height H of the wave crest of 1 outer wall b of main body pipeline section1Phase
Deng, pitch of waves T1Equal and outer wall thickness is constant, the wave crest of 2 outer wall of gradient pipe segment along main body pipeline section 1 to the direction of solid wall pipeline section 3
Height H2It gradually becomes smaller, pitch of waves T2It gradually becomes smaller and outer wall b thickness gradually increases.Double-wall corrugated pipe is located at main body pipeline section 1, gradually
It is identical with the inner wall a thickness at solid wall pipeline section 3 to become pipeline section 2.It is light-weight, high pressure resistant, tough that main body pipeline section 1 remains existing bellows
The advantage that property is good, anti-seismic performance is strong and critical external compressive resistance ability is strong.The thickness of 2 outer wall b of solid wall pipeline section increases, and intensity is higher than conventional wave
Line pipe, and the ability with good anti-internal pressure and critical external compressive resistance.The outer wall b and pitch of waves T of gradient pipe segment 22It is gradually reduced, wave crest
Height H2It gradually becomes smaller, outer wall b wall thickness accordingly gradually thickens, and is gradually transitions double-deck 3 structure of solid wall pipeline section of not wave crest, gradually
Become the advantages of pipeline section 2 has both plastic double-walled corrugated pipe main body pipeline section 1 and solid wall pipeline section 3, and play preferable transitional function,
So that double-wall corrugated pipe integral loop flexibility is preferable.Therefore, plastic double-walled corrugated pipe be integrally able to bear at the same time biggish external pressure and
Internal pressure, and have the advantages that light-weight, high pressure resistant, good toughness, anti-seismic performance are strong and integral loop flexibility is good.
Two adjacent plastic double-walled corrugated pipe hot melt butt welding connections, the end of solid wall pipeline section is set as welding ends.I.e. length is
When the double-wall corrugated pipe connection of L1, wherein the end of the solid wall pipeline section 3 of one end of a bellows and the one of another bellows
The end hot melt butt welding connection of the solid wall pipeline section 3 at end, connection is reliable, hot melt butt welding connection seam will not due to soil movement or
The effect of changing load and disconnect, welding procedure is simple, and easy for construction, pipe joint is high-quality, is not required to additional connecting pipe, work
The advantages that journey comprehensive cost low.
Common band flaring plastic double-walled corrugated pipe needs that flared part is cut away one section according to Connecting quantity, to be held
Insert connection, but since the present embodiment is when two adjacent plastic double-walled corrugated pipes connects, connected using hot melt butt welding, because without
Flaring structure is produced, it is extra at plastic double-wall corrugated pipe enlarging equally also not need to cut away when plastic double-walled corrugated pipe produces
Part shortens the production cycle, simplifies the cutting technique of plastic double-walled corrugated pipe.
Embodiment two
Embodiment two and embodiment one the difference is that: as shown in Fig. 2, at gradient pipe segment 2 and solid wall pipeline section 3
The thickness of double-wall corrugated inside pipe wall a gradually increases.The inner wall a wall thickness increase of double-wall corrugated pipe is the gradual change since gradient pipe segment 2
The inner wall outer wall of double-wall corrugated pipe at pipeline section 2 and solid wall pipeline section 3 all equably thickens, and forms an angle α, is gradually transitions solid wall
Pipeline section 3, material is thus formed the solid wall pipeline section of thickening, the performances such as weldability, resistance to pressure, splitting resistance have all been obtained significantly
Promotion.
Two kinds of double-wall corrugated pipes of embodiment one and embodiment two, the double-wall corrugated pipe in embodiment one are used for tubing
The places such as the lateral that can be strict with, each section is at the uniform velocity to produce when double-wall corrugated pipe forms.Implementation method is logical
The calculating to waveform is crossed, its material quantity (volume) is identical in the waveform of strict control tubing unit length, what realization at the uniform velocity produced
Purpose.The main pipeline that plastic double-walled corrugated pipe in embodiment two is used to have pipe performance strict demand, plastic double-wall ripple
The inner and outer wall of tube transitions section changes simultaneously, thus the process of an even speed change is needed when double-wall corrugated pipe molding.Implement
Two kinds of reasonably combined uses of plastic double-walled corrugated pipe of example one and embodiment two, performance that can be achieved is reliable, engineering comprehensive low cost
The advantages of.
The utility model is not limited to the above embodiment, all design, principle, structure and sides based on the utility model
Method, the various improvement made, is within the protection scope of the utility model.
Claims (4)
1. a kind of plastic double-walled corrugated pipe, the plastic double-walled corrugated pipe includes inner and outer wall, which is characterized in that
The plastic double-walled corrugated pipe is equipped with main body pipeline section, and the both ends of the main body pipeline section are respectively connected with gradient pipe segment, it is described gradually
The outer end for becoming pipeline section is connected with solid wall pipeline section, and the height of the wave crest of the main body pipeline section outer wall is equal, the pitch of waves is equal and outer wall thickness
Spend constant, the height of the wave crest of the gradient pipe segment outer wall gradually becomes along the main body pipeline section to the direction of the solid wall pipeline section
The small, pitch of waves gradually becomes smaller and outer wall thickness gradually increases.
2. plastic double-walled corrugated pipe as described in claim 1, which is characterized in that the plastic double-walled corrugated pipe is in the main body
Pipeline section, the gradient pipe segment are identical with the inner wall thickness at the solid wall pipeline section.
3. plastic double-walled corrugated pipe as described in claim 1, which is characterized in that the plastics at the gradient pipe segment are double
Wall bellows inner wall thickness gradually increases, and the double-wall corrugated pipe inner wall thickness at the solid wall pipeline section is greater than at the gradient pipe segment
Inner wall thickness and the main body pipeline section inner wall thickness.
4. plastic double-walled corrugated pipe as described in claim 1, which is characterized in that the two adjacent plastic double-walled corrugated pipe hot melts
Butt welding connection, the end of the solid wall pipeline section is set as welding ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920120311.XU CN209587380U (en) | 2019-01-23 | 2019-01-23 | Plastic double-walled corrugated pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920120311.XU CN209587380U (en) | 2019-01-23 | 2019-01-23 | Plastic double-walled corrugated pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209587380U true CN209587380U (en) | 2019-11-05 |
Family
ID=68380301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920120311.XU Active CN209587380U (en) | 2019-01-23 | 2019-01-23 | Plastic double-walled corrugated pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209587380U (en) |
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2019
- 2019-01-23 CN CN201920120311.XU patent/CN209587380U/en active Active
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