CN207554995U - Feedwater bimetallic tube - Google Patents
Feedwater bimetallic tube Download PDFInfo
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- CN207554995U CN207554995U CN201721790928.XU CN201721790928U CN207554995U CN 207554995 U CN207554995 U CN 207554995U CN 201721790928 U CN201721790928 U CN 201721790928U CN 207554995 U CN207554995 U CN 207554995U
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- tube
- bimetallic
- inner tube
- feedwater
- outer tube
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Abstract
This patent application discloses a kind of feedwater bimetallic tubes, are related to the plastics rigid pipe field of double-layer tube wall.The inner tube of outer tube and PE resins including PE materials, the end of the outer tube is equipped with for the convenient hot melt portion with adjacent channel hot-melt adhesive paste, the end of the inner tube is equipped with for the flange portion with adjacent channel flanged joint, heat-fused portion is not fixedly connected with the both ends of outer tube, flange portion is fixedly connected respectively with the both ends of inner tube, and flange portion is located at the inside of inner tube.This programme solves the technical issues of double water pipe manufactured in the prior art is susceptible to leakage upon connection, and suitable for excavating, no-dig technique drinks Hydraulic Projects, rural potable water improvement project.
Description
Technical field
The utility model is related to the plastics rigid pipe field of double-layer tube wall, more particularly to a kind of feedwater bimetallic tube.
Background technology
Water pipe is the pipeline to supply water, and modern times finishing water pipe is all to use to bury wall construction, and there are three types of the classification of water pipe, first
Class is metal tube, such as hot dip cast iron pipe, copper pipe, the stainless steel tube of interior slush moulding material.Second class is the multiple metal tube of modeling, such as moulds multiple steel
Pipe, aluminum plastic composite pipe etc..Third class is plastic tube, such as PB, PE, PP-R.
PE is a kind of thermoplastic, its performance depends on distribution, molecular weight and its distribution and the semi-crystal of short-chain branch
Structure.Molecular weight is the principal element for determining the polymer performance related with durability, such as long-term strength, toughness, plasticity and tired
Lao Xing.It molecular weight and its plays an important role in terms of being distributed in rheological property or even tube extrusion process, molecular weight and short
Branch determines the mechanical performance of tubing.Its Short-lived attributes such as hardness can be explained by the crystalline state of material；And long-term properties are as resisted
Environmental Stress Cracking, the involvement depending on long chain in amorphousness.For the application on tubing, stiffness and resistance to
Stress cracking resistance is most important performance indicator, both performances is required to reach balance in the design of material.
The raw material of PE pipelines is divided into 3 ranks, respectively PE63 grades PE80 grades and PE100 grades, in contrast holds for PE100 grades
Pressure performance is best, and flexibility is worst, and PE63 load performances are worst, and flexibility is best, and PE80 falls between.PEl00 has
Bimodal molecular weight distribution, two polyethylene molecules are one very short, and another is then considerably long, and high molecular weight segment obtains double
Peak distributed shunt connects more molecules, and this structure gives resin fabulous physical property, while remains preferable technique
Property, so as to reach creep resistance, crack resistance and the perfect combination of good workability.
PE feed pipes are made of the polythene materials of different densities, are usually utilized to transport natural gas, oil, city water
Deng.Usually its construction method is relatively simple, and the welding of joint is easy, and intensity is also very high.With traditional metal material
Material compared to it will not occur first on become rusty the phenomenon that, while will not because usage time is long and bacteria breed situation.It is producing
In the process, metal material is often required for brushing corresponding anti-corrosion material, prevents situation about corroding occur after being used for a long time,
And it is without any relative program, therefore the cost for not only reducing production can improve process again.But it also has
Some itself the shortcomings that, such as high temperature resistant is unable to, there is reflection for the chemical solvent of strong corrosive, hardness is big etc. without metal.
Coextrusion process is generally used for processing film and electric wire processing, such as courier bag and milk bag, is not required to compared to composite membrane
Want adhesive.Black and white film belongs to double-layer coextrusion film, and there are two heads when plastic extrusion to squeeze out black PE films and white simultaneously
Color PE films are bonded together when film is also in semi liquid state, and co-extrusion film compares composite membrane moisture resistance and impact resistance in performance
Property is all improved, and is unlikely to deform at high temperature.
Flange is the part being connected with each other between pipe and pipe, and for the connection between pipe end, common flange has
For injecting the ring flange of the protrusion in pipeline and Connection protrusion, flange is made to be fixed with pipeline ring flange and pipeline welding, but
The problem of being this fixed form or being susceptible to leakage, and flange can not use the mode of welding to carry out with plastic conduit
It is fixed.
Utility model content
The utility model is intended to provide a kind of feedwater bimetallic tube, to solve the double water pipe manufactured in the prior art even
The technical issues of leakage is susceptible to after connecing.
Feedwater bimetallic tube in this programme, the inner tube of outer tube and PE resins including PE materials, the outer tube
End be equipped with for the convenient hot melt portion with adjacent channel hot-melt adhesive paste, the end of the inner tube, which is equipped with, to be used for and adjacent tubes
The flange portion of road flanged joint, heat-fused portion are not fixedly connected with the both ends of outer tube, flange portion respectively with the both ends of inner tube
It is fixedly connected, flange portion is located at the inside of inner tube.
Using outer tube made of PE material mixes, make outer tube have PE feed pipes low-temperature impact-resistant, cracking resistance,
The features such as ageing-resistant, resistant to chemical etching；PE resins are only made of two kinds of elements of carbon and hydrogen, compared to PE outer tubes or other materials
Water pipe, do not add any additive, therefore avoid additive and polluted caused by water quality, at the same compared to addition carbon black addition
The PE tubing resistance to pressures of agent are more preferable；It is individually raw compared to first by outer tube and inner tube one-pass molding by the way of double-layer coextrusion
Outer tube and inner tube are produced, then outer tube and inner tube are used to the mode of adhesive bonding, since the method for this programme is one
Secondary molding, therefore the production cycle is shorter, it is not required that adhesive, therefore more cost-effective, two connected using electric heating melting mode
There is no seam between root bimetallic tube, avoid water resource and flowed out from the gap between two pipes, other pipelines include steel pipe, copper
Pipe, aluminum plastic composite pipe are convenient and efficient using flanged joint.
The bimetallic tube of this programme can use difference due to using double layer design according to the different demand of ectonexine
Material, reach the outer layer performance identical with common PE feed pipe, then the PE feed pipe logical compared to figure has safety, health to internal layer
The characteristics of.
It, only need to be two when this programme is using by the hot melt portion for being arranged on outer layer tube end so that being connected between two bimetallic tubes
Two bimetallic tubes can be seamlessly connected together, in this way using the mode of electric heating melting in the hot melt portion of root bimetallic tube
It will not be there are gap, compared to staying apertured situation there is no gap in height between pipeline between the bimetallic tube to link together
The lower expansion of temperature becomes larger and leads to pipe leakage, therefore solve the double water pipe manufactured in the prior art and be susceptible to upon connection and ooze
In addition the technical issues of leakage, is equipped with when being connect with other pipelines the bimetallic tube of this programme using flanged joint, inner tube
Flange portion causes flange closely to be connect with inner tube, reduces the probability of leakage.
Further, the hot melt portion is is sleeved on the bimetallic tube end clamping ring identical with bimetallic tube material, the connection outside
The internal diameter of circle is identical with the outer diameter of bimetallic tube, and clamping ring is fixedly connected with outer tube.
After setting in this way, when electric heating melting mode is used to be attached two bimetallic tubes, clamping ring and the bilayer of thawing
Pipe combines so that bimetallic tube leaves no gaps upon connection, and clamping ring forms interference with outer tube and connect so that is using electric heating melting
Mode can be evenly heated in bimetallic tube seam crossing when connecting two bimetallic tubes, it is excessive compared to clamping ring internal diameter so that one
Be divided to clamping ring do not melt to cause between two bimetallic tubes generate gap.
Further, the inner wall of the inner tube is equipped with several bar-shaped troughs, and the bar-shaped trough is evenly distributed on inner tube
On inner wall, the depth of bar-shaped trough is the half of inner tube wall thickness, and the width of bar-shaped trough is bar-shaped trough deep equality.
In this way set after, for bimetallic tube at high temperature volume expansion when leave expansion space, so as to avoid bimetallic tube swollen
Crack is generated during swollen or in retraction process.
Further, the end of the outer tube is equipped with external screw thread, and clamping ring is threadedly coupled with outer tube.
In this way set after, when being attached using the mode of electric heating melting to two bimetallic tubes, clamping ring melt after with outer spiral shell
Line combines, and increases the resistance of two bimetallic tubes of longitudinal extension.
Further, the flange portion is the raised line for several annulars for being arranged on internal layer inside pipe wall, the spacing between raised line with
The width of raised line is equal, and the height of raised line is equal with the width of raised line.
When bimetallic tube and other pipelines, such as steel pipe are needed when hard pipeline connects using flanged joint, by inside
Ring rib is set on layer pipe, when the protrusion of flange enters inner tube and is attached, ring rib deforms the protrusion for wrapping flange,
Reduce the gap between flange and inner tube, so as to increase stability when being connected between bimetallic tube and other pipelines.
Further, the outer tube is PE100 grades of feed pipes, and the inner tube is PE100 grade resins feed pipes.
Using outer tube made of PE100 grades of materials compared to the pressure-bearing property of PE63 grades of feed pipes and PE80 grades of feed pipes more
Good, PE100 grade resins are only made of two kinds of elements of carbon and hydrogen, because not adding additive, therefore will not be because of additive to water
Matter causes secondary pollution, it is ensured that water hygiene safety, while there is corrosion-resistant, small flow resistance, relative to tradition
PE feed pipes, sanitation performance are further promoted.
Description of the drawings
Fig. 1 is the stereoscopic schematic diagram of the embodiment 1 of the utility model feedwater bimetallic tube；
Fig. 2 is the stereoscopic schematic diagram of the embodiment 2 of the utility model feedwater bimetallic tube.
Specific embodiment
PE double-skin ducts have a variety of construction technologies, can be with other than traditional digging mode may be used and constructed
It using a variety of trenchless technologies such as directional drilling, bushing pipe, splits the modes such as pipe, push pipe and constructs, this does not allow out some
The place of digging is uniquely to select, therefore PE double-skin duct application fields are more extensive.
Below by the further details of explanation of specific embodiment：
Reference numeral in Figure of description includes：Outer tube 1, inner tube 2, clamping ring 3, external screw thread 4, ring rib 5,
Bar-shaped trough 6.
Embodiment 1 is substantially as shown in Figure 1：
Feedwater bimetallic tube in the present embodiment, including outer tube 1 and inner tube 2, the material of outer tube 1 is adopted is containing proportion
The PE100 grade material mixes of the carbon additive of 2-2.5% are made, and the material of inner tube 2 is PE100 grade resins, outer layer
Pipe 1 and the one-pass molding by the way of double-layer coextrusion of inner tube 2, when connecting two bimetallic tubes by the way of electric heating melting, this
Using flanged joint when the bimetallic tube of scheme connects other pipelines.
It uses containing proportion as outer tube 1 made of the PE100 grade material mixes of the carbon additive of 2-2.5%,
Outer tube 1 is enabled to absorb ultraviolet light, tubing can be not exposed to ultraviolet radiation in outdoor outdoor storage or using 50 years
Damage, while also there is PE feed pipes low-temperature impact-resistant, cracking resistance, ageing-resistant, resistant to chemical etching, compared to PE63 grades
Feed pipe and PE80 grades of feed pipes, the crushing resistance of PE100 grades of feed pipes are more preferable；PE100 grade resins are only by two kinds of elements of carbon and hydrogen
Composition, because not adding additive, therefore will not cause secondary pollution because of additive to water quality, it is ensured that water hygiene is pacified
Entirely, while there is corrosion-resistant, small flow resistance, relative to traditional PE feed pipes, sanitation performance is further promoted, simultaneously
PE tubing resistance to pressures compared to addition carbon additive are more preferable.
By outer tube 1 and the one-pass molding by the way of double-layer coextrusion of inner tube 2, compared to first individually produce outer tube 1 with
Inner tube 2, then the mode by outer tube 1 and the use adhesive bonding of inner tube 2, since the method for this programme is one-pass molding,
Therefore the production cycle is shorter, it is not required that adhesive, therefore it is more cost-effective；Finally, electric heating melting side is used between bimetallic tube
After formula connection, the intensity of connector is than bimetallic tube higher itself so that and connection is reliable, when other pipelines are connect with bimetallic tube, due to
The connection mode of electric heating melting cannot be used, therefore using conveniently flanged joint, and be arranged on the flange portion in inner tube
So that inner tube is reduced when being contacted with the projection portion of flange.
Embodiment 2 is substantially as shown in Figure 2：
The present embodiment is substantially the same manner as Example 1, and the convex of annular that have three layers is set on the inner wall the difference lies in inner tube 2
Item, the end of the outer tube 1 are cased with clamping ring 3, and the internal diameter of clamping ring 3 is identical with the outer diameter of outer tube 1, the end of outer tube 1
Portion is equipped with external screw thread, and the inner wall of inner tube 2 is equipped with 8 bar-shaped troughs, after setting bar-shaped trough 6 on the inner wall of inner tube 2, is
Bimetallic tube at high temperature volume expansion when leave expansion space, so as to avoid bimetallic tube in expansion process or in retraction process
Middle generation crack；After being cased with clamping ring 3 in the end of bimetallic tube, two bimetallic tubes are attached using electric heating melting mode
When, the clamping ring 3 of thawing is combined with outer tube 1 so that outer tube 1 leaves no gaps upon connection, the outer diameter and outer layer of clamping ring 3
Clamping ring 3 can be needed to stretch and is a little sleeved on outside bimetallic tube when the internal diameter of pipe 1 is identical so that be connected in the mode for using electric heating melting
It can be evenly heated during two bimetallic tubes in bimetallic tube seam crossing, it is excessive compared to 3 internal diameter of clamping ring so that a part of clamping ring 3
Do not melt to cause between two bimetallic tubes generate gap；After being equipped with external screw thread 4 on the end of bimetallic tube, electric heating melting is used
When mode is attached two bimetallic tubes, clamping ring 3 is combined after melting with external screw thread 4, increases two bilayers of longitudinal extension
The resistance of pipe；After being equipped with ring rib 5 on bimetallic tube, when bimetallic tube and other pipelines, such as the hard such as steel pipe pipeline connect
When, it needs using flanged joint, by setting ring rib 5 in inner tube, the protrusion of flange enters inner tube and is attached
When, ring rib 5 deforms the protrusion for wrapping flange, reduces the gap between flange and inner tube, so as to increase bimetallic tube
Stability when being connected between other pipelines.
Above-described is only the embodiment of the utility model, and the common sense such as well known concrete structure and characteristic are herein in scheme
It does not describe excessively, the affiliated technology neck of utility model before one skilled in the art know the applying date or priority date
All ordinary technical knowledges in domain can know the prior art all in the field, and with using normal before the date
The ability of laboratory facilities is advised, one skilled in the art can be complete with reference to self-ability under the enlightenment that the application provides
It is apt to and implements this programme, some typical known features or known method should not becomes one skilled in the art's reality
Apply the obstacle of the application.It should be pointed out that for those skilled in the art, in the premise for not departing from the utility model structure
Under, several modifications and improvements can also be made, these should also be considered as the scope of protection of the utility model, these are not all interfered with
The effect and practical applicability that the utility model is implemented.This application claims protection domain should be with the content of its claim
Subject to, the records such as specific embodiment in specification can be used for explaining the content of claim.
Claims (6)
1. feedwater bimetallic tube, it is characterised in that：The inner tube of outer tube and PE resins including PE materials, the outer tube
End is equipped with for the convenient hot melt portion with adjacent channel hot-melt adhesive paste, and the end of the inner tube, which is equipped with, to be used for and adjacent channel
The flange portion of flanged joint, heat-fused portion are not fixedly connected with the both ends of outer tube, and flange portion is consolidated respectively with the both ends of inner tube
Fixed connection, flange portion are located at the inside of inner tube.
2. feedwater bimetallic tube according to claim 1, it is characterised in that：The hot melt portion is is sleeved on bimetallic tube end outside
The clamping ring identical with bimetallic tube material, the internal diameter of the clamping ring is identical with the outer diameter of bimetallic tube, and clamping ring is consolidated with outer tube
Fixed connection.
3. feedwater bimetallic tube according to claim 1, it is characterised in that：The inner wall of the inner tube is equipped with several
Shape slot, the bar-shaped trough are evenly distributed on the inner wall of inner tube, and the depth of bar-shaped trough is the half of inner tube wall thickness, bar-shaped trough
Width be bar-shaped trough deep equality.
4. feedwater bimetallic tube according to claim 3, it is characterised in that：The end of the outer tube is equipped with outer spiral shell
Line, clamping ring are threadedly coupled with outer tube.
5. feedwater bimetallic tube according to claim 1, it is characterised in that：The flange portion is is arranged on internal layer inside pipe wall
Several annulars raised line, the spacing between raised line is equal with the width of raised line, and the height of raised line is equal with the width of raised line.
6. feedwater bimetallic tube according to claim 1, it is characterised in that：The outer tube be PE100 grades of feed pipes, institute
Inner tube is stated as PE100 grade resins feed pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721790928.XU CN207554995U (en) | 2017-12-19 | 2017-12-19 | Feedwater bimetallic tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721790928.XU CN207554995U (en) | 2017-12-19 | 2017-12-19 | Feedwater bimetallic tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207554995U true CN207554995U (en) | 2018-06-29 |
Family
ID=62664619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721790928.XU Active CN207554995U (en) | 2017-12-19 | 2017-12-19 | Feedwater bimetallic tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207554995U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111828740A (en) * | 2020-06-29 | 2020-10-27 | 申蕾 | Steel band reinforcing PVC pipe |
-
2017
- 2017-12-19 CN CN201721790928.XU patent/CN207554995U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111828740A (en) * | 2020-06-29 | 2020-10-27 | 申蕾 | Steel band reinforcing PVC pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 402160 No. 2408, Xinglong Avenue, Yongchuan District, Chongqing Patentee after: Ad pipeline (Chongqing) Co.,Ltd. Address before: 402160 No. 2408, Xinglong Avenue, Yongchuan District, Chongqing Patentee before: CHONGQING YONGGAO PLASTIC DEVELOPMENT Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |