CN107606328A - A kind of corrosion resistant plastic-coated steel for facilitating local replacing - Google Patents
A kind of corrosion resistant plastic-coated steel for facilitating local replacing Download PDFInfo
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- CN107606328A CN107606328A CN201710785083.3A CN201710785083A CN107606328A CN 107606328 A CN107606328 A CN 107606328A CN 201710785083 A CN201710785083 A CN 201710785083A CN 107606328 A CN107606328 A CN 107606328A
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- parts
- corrosion
- resistant plastic
- steel pipe
- inner tube
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
Abstract
The invention discloses a kind of corrosion resistant plastic-coated steel for facilitating local replacing, including steel pipe, steel pipe includes inner tube, outer tube is connected by elastic buffer support in inner tube, interior corrosion-resistant plastic layer and interior epoxy resin powder last layer are sequentially connected in inner tube, outer corrosion-resistant plastic layer and outer epoxy resin powder last layer are sequentially connected on the outside of outer tube；One group of connecting portion is provided with steel pipe；Also include the jointing of the first joint, connecting tube and the second joint composition.Advantages of the present invention：Steel pipe is double-decker, buffering stand is set between steel pipe, it can effectively disperse and mitigate stress, steel pipe uses anti-corrosion treatment simultaneously, steel body is firmly combined with modeling pipe, and the antiseptic property of steel pipe is good, effectively solves the technical problem that existing plastic-coated steel produces seepage because of corrosion, rapid, good sealing effect is connected by jointing simultaneously.
Description
Technical field
The present invention relates to pipe technology field, more particularly to a kind of corrosion resistant plastic-coated steel for facilitating local replacing.
Background technology
Plastic-coated steel is to play protection steel pipe inner wall by heating one layer of plastic layer on steel pipe inner wall with plastic spraying
A kind of pipeline, typically need to handle the inwall of steel pipe before plastic-coated, such as ball blast, derusting operation, make the interior of steel pipe
Wall is as far as possible bright and clean, increases the being firmly combined with property of coating layer and steel pipe inner wall, but plastic-coated steel often occurs in normal use
The phenomenon of coating layer rupture, this be due to the thermal coefficient of expansion gap of steel pipe and coating layer it is too big caused by, in the identical temperature difference
Under, the thermal volume expansion of coating layer will be far longer than the thermal volume expansion of steel pipe in itself, so in the larger situation of difference variation
Under, coating layer easily produces retractility stripping, separates and comes off with steel pipe when serious, loses the protective effect of coating layer, and this
Kind elongation percentage difference increases as temperature raises, especially when caliber is larger, the deformation of big lining area relative accumulation
Amount is big, and coating is more prone to shrink, ftractures, separate and comes off, and steel pipe is easily corroded generation seepage after a long time use for this,
Reduce the reliability used.
And the connection of existing plastic-coated steel has many defects, as long as current connected mode, plugs together connection：In steel pipe
One end enlarging, the other end necking of steel pipe or maintain normal bore, the flared end of two neighboring plastic-coated steel and necking end or
Normal bore end plugs together connection, then contact point is welded or done other preservative treatments, during welding, certainly will cause solder joint
Coming off for position anticorrosive coat, influences service life.End pipe welding manner：For what is welded using end pipe, i.e. one end weldering of end pipe
The end of a steel pipe is connected on, the other end of end pipe is welded on the end of another steel pipe, passes through end pipe two Clad Steels of series connection
Pipe, also easily exist solder joint come off cause leakage the problem of.The mating connection mode of groove and pipe collar：In the outer of the both ends of steel pipe
Groove is set on wall, after two plastic-coated steels are docked, is buckled in using pipe collar on the groove of two plastic-coated steels, is locked by pipe collar
Two plastic-coated steels are made to be together in series after tight groove, although this mode has a wide range of application, use is simple and easy, still, at present
Pipe collar anti-corrosion it is most use corrosion resistant coating, antiseptic effect is bad, causes pipe collar to corrode and releases the problem of in turn resulting in leakage and be
There are generation, and the existing plastic-coated steel instrument that needs aid in connection, and connect bothersome laborious.
The content of the invention
The invention aims to solve shortcoming present in prior art, and a kind of local replacing that facilitates proposed
Corrosion resistant plastic-coated steel.
To achieve these goals, present invention employs following technical scheme：
A kind of corrosion resistant plastic-coated steel for facilitating local replacing, it is characterised in that including：
Steel pipe, steel pipe include inner tube, and outer tube is socketed in the outside of inner tube, passes through elastic buffer support between inner tube and socket outer tube
Be connected, elastic buffer support leads to tubular structure, and it be wavy shaped configuration that property buffering stand, which leads to the cross section of cylinder, inner tube with
Elastomeric layer is also filled up in annular housing between socket outer tube；
By corrosion-resistant plastic layer in the connection of interior mucigel in inner tube, the epoxy resin in spraying on the inside of the interior corrosion-resistant plastic layer
Powder bed, outer corrosion-resistant plastic layer is connected by outer mucigel in the outside of outer tube, sprayed in the outside of outer corrosion-resistant plastic layer
Outer epoxy resin powder last layer；
One group of connecting portion is provided with steel pipe, connecting portion includes the connecting rod that circumference uniform distribution is set, the inner tube in connecting rod both sides
The first screwed pipe is equipped between outer tube, reinforced pipe is filled between outer corrosion-resistant plastic layer and interior corrosion-resistant plastic layer；
Jointing, jointing include the first joint, and the first joint connects the second joint by connecting tube, the first joint and the
Two joint designs are identical, and they all include body, and through hole is provided with body, are provided with the side of body and carry externally threaded ring
Shape groove, card cylinder is provided with the opposite side of body, the second screwed pipe being connected with the first screwed pipe is provided with card cylinder, is set in connecting tube
There is the internal thread being connected with annular groove；
The steel pipe is handled using following methods：
A, pickling, at room temperature, steel pipe is immersed in pickle, goes the oxide layer of skim-coat；
B, plating is helped, steel tube surface is covered in liquid fluxing agent film layer；
C, drying, the drying of workpiece surface to be plated is kept；
D, zinc is soaked；
E, it is surface-treated, blasting treatment is carried out in the inwall of inner tube and the outer wall of outer tube；
The interior corrosion-resistant plastic layer 10 is identical with the outer raw material of epoxy resin powder last layer 8, and their raw material includes by weight：Phenol
80~100 parts of formaldehyde epoxy resin, 50~60 parts of nano silicon, 4~6 parts of phenols curing agent, 3~4 parts of function additive, nitric acid
20~30 parts of the mixture of lanthanum and samaric nitrate, 1~1.5 part of levelling agent, the mixture 5- of zirconium oxide, titanium oxide and zinc oxide three
8 parts, 5~8 parts of calcium carbonate, 3~6 parts of calcium phosphate.
Preferably, in the longitudinally disposed interior raised line of one group of the inwall circumference uniform distribution of said inner tube, the raised line in any two
Between inner tube wall on be equipped with one group of internal projection.
Preferably, in the longitudinally disposed outer raised line of one group of the outer wall circumference uniform distribution of the outer tube, the raised line outside any two
Between outer tube outer wall on be equipped with one group of outer lug.
Preferably, the interior corrosion-resistant plastic layer 10 and the raw material of outer epoxy resin powder last layer 8 include by weight：Phenolic aldehyde
90 parts of epoxy resin, 55 parts of nano silicon, 5 parts of phenols curing agent, 3.5 parts of function additive, lanthanum nitrate and samaric nitrate mix
25 parts of compound, 1.2 parts of levelling agent, 6 parts of the mixture of zirconium oxide, titanium oxide and zinc oxide three, 6 parts of calcium carbonate, calcium phosphate 5
Part.
Preferably, 12 parts of the lanthanum nitrate, 13 parts of the samaric nitrate.
Preferably, 1 part of the zirconium oxide, 2 parts of titanium oxide, 3 parts of zinc oxide three.
The advantage of the invention is that：The steel pipe of the present invention is arranged to double-decker, and buffering branch is set between two layers of steel pipe
Frame, it can effectively disperse and mitigate stress, while steel pipe uses anti-corrosion treatment, steel body is consistent with expanding with heat and contract with cold for modeling pipe,
The stabilization of pipe is moulded, is firmly combined with, will not release, the antiseptic property of steel pipe is good, effectively solves existing plastic-coated steel
The technical problem of seepage is produced because of corrosion.
The present apparatus is simple to operate, and connection is rapid, good sealing effect, while jointing carries out the zinc-plated processing of antirust, and
Corrosion-resistant plastic layer is equipped with the inner side and outer side of jointing, makes its favorable anti-corrosion effect, considerably increases its service life.
Brief description of the drawings
Fig. 1 is a kind of structural representation of corrosion resistant plastic-coated steel for facilitating local replacing provided by the present invention；
Fig. 2 is Fig. 1 side view partial sectional view；
Fig. 3 is jointing structural representation.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
As shown in figure 1, a kind of corrosion resistant plastic-coated steel for facilitating local replacing provided by the invention, including：
Steel pipe 1, steel pipe 1 include inner tube 2, and outer tube 3 is socketed in the outside of inner tube 2, passes through elasticity between inner tube 2 and socket outer tube 3
Buffering stand 4 is connected, and elastic buffer support 4 leads to tubular structure, and it is waveform knot that property buffering stand 4, which leads to the cross section of cylinder,
Structure, elastomeric layer 5 is also filled up in inner tube 2 and the annular housing being socketed between outer tube 3.In the inwall circumference uniform distribution of inner tube 2
One group of longitudinally disposed interior raised line 14, one group of internal projection 15 is equipped with the inwall of inner tube 2 in any two between raised line 14.
Interior corrosion-resistant plastic layer 10 is connected by interior mucigel 9 in inner tube 2, sprayed in the interior inner side of corrosion-resistant plastic layer 10
Interior epoxy resin powder last layer 11, outer corrosion-resistant plastic layer 7 is connected by outer mucigel 6 in the outside of outer tube 3, corrosion-resistant modeling outside
The outside of the bed of material 7 sprays outer epoxy resin powder last layer 8.In the longitudinally disposed outer raised line 12 of one group of the outer wall circumference uniform distribution of outer tube 3,
One group of outer lug 13 is equipped with the outer wall of outer tube 3 outside any two between raised line 12.
By interior raised line 14, internal projection 15, outer raised line 12 and outer lug 13, steel ensure that body and that moulds pipe expands with heat and contract with cold one
Cause, mould the stabilization of pipe, be firmly combined with, will not release.
With reference to shown in Fig. 2, one group of connecting portion 17 is provided with steel pipe 1, connecting portion 17 includes the connection that circumference uniform distribution is set
Bar 18, the first screwed pipe 16 is equipped between the inner tube 2 of the both sides of connecting rod 18 and outer tube 3, in outer corrosion-resistant plastic layer 7 and Nei Nai
Reinforced pipe 19 is filled between corrosion plastic layer 10.
With reference to shown in Fig. 3, jointing, jointing includes the first joint 20, and the first joint 20 is connected by connecting tube 22
The second joint 21 is connect, the first joint 20 is identical with the structure of the second joint 21, and they all include body, and through hole is provided with body
26, it is provided with the side of body and carries externally threaded annular groove 23, card cylinder 24 is provided with the opposite side of body, in card cylinder 24
The internal thread being connected with annular groove 23 is provided with provided with the second screwed pipe 25 being connected with the first screwed pipe 16, in connecting tube 22.
First joint 20, the joint 21 of connecting tube 22 and second by the zinc-plated processing of antirust, and in the inner side of three and
Outside is equipped with corrosion-resistant plastic layer, plays and is connected with etch-proof effect.
When needing removable parts plastic-coated steel, cut off and then from the connecting portion 17 of removable parts both sides is needed by connecing
Head connects new plastic-coated steel, easy to connect quick.
The steel pipe 1 is handled using following methods：
A, pickling, at room temperature, steel pipe 1 is immersed in pickle, goes the oxide layer of skim-coat；
B, plating is helped, helps depositing process to use prior art, the surface of steel pipe 1 is covered in liquid fluxing agent film layer；
C, drying, the drying of workpiece surface to be plated is kept；
D, zinc is soaked, dip galvanizing technique uses prior art；
E, it is surface-treated, blasting treatment is carried out in the inwall of inner tube 2 and the outer wall of outer tube 3；
The interior corrosion-resistant plastic layer 10 is identical with the outer raw material of epoxy resin powder last layer 8, and their raw material includes by weight：Phenol
80~100 parts of formaldehyde epoxy resin, 50~60 parts of nano silicon, 4~6 parts of phenols curing agent, 3~4 parts of function additive, nitric acid
20~30 parts of the mixture of lanthanum and samaric nitrate, 1~1.5 part of levelling agent, the mixture 5- of zirconium oxide, titanium oxide and zinc oxide three
8 parts, 5~8 parts of calcium carbonate, 3~6 parts of calcium phosphate.
Formula as below is used by weight for above-mentioned raw materials：90 parts of novolac epoxy resin, 55 parts of nano silicon, phenol
25 parts of the mixture of 5 parts of class curing agent, 3.5 parts of function additive, lanthanum nitrate and samaric nitrate, 1.2 parts of levelling agent, zirconium oxide, oxidation
6 parts of titanium and the mixture of zinc oxide three, 6 parts of calcium carbonate, 5 parts of calcium phosphate.Wherein 12 parts of lanthanum nitrate, 13 parts of the samaric nitrate,
1 part of zirconium oxide, 2 parts of titanium oxide, 3 parts of zinc oxide three.
Claims (6)
- A kind of 1. corrosion resistant plastic-coated steel for facilitating local replacing, it is characterised in that including：Steel pipe（1）, steel pipe（1）Including inner tube（2）, in inner tube（2）Outside socket outer tube（3）, inner tube（2）With socket outer tube （3）Between pass through elastic buffer support（4）It is connected, elastic buffer support（4）Logical tubular structure, and property buffering stand（4） The cross section of logical cylinder is wavy shaped configuration, in inner tube（2）With socket outer tube（3）Between annular housing in also fill up elastomeric material Layer（5）；In inner tube（2）It is interior to pass through interior mucigel（9）Corrosion-resistant plastic layer in connection（10）, in interior corrosion-resistant plastic layer（10）Inner side Epoxy resin powder last layer in spraying（11）, in outer tube（3）Outside pass through outer mucigel（6）The outer corrosion-resistant plastic layer of connection（7）, In outer corrosion-resistant plastic layer（7）Outside spray outer epoxy resin powder last layer（8）；In steel pipe（1）It is provided with one group of connecting portion（17）, connecting portion（17）The connecting rod set including circumference uniform distribution（18）, even Extension bar（18）The inner tube of both sides（2）And outer tube（3）Between be equipped with the first screwed pipe（16）, in outer corrosion-resistant plastic layer（7）With it is interior Corrosion-resistant plastic layer（10）Between fill reinforced pipe（19）；Jointing, jointing include the first joint（20）, the first joint（20）Pass through connecting tube（22）Connect the second joint （21）, the first joint（20）With the second joint（21）Structure is identical, and they all include body, and through hole is provided with body（26）, It is provided with the side of body and carries externally threaded annular groove（23）, card cylinder is provided with the opposite side of body（24）, in card cylinder（24） It is interior to be provided with and the first screwed pipe（16）Second screwed pipe of connection（25）, connecting tube（22）Inside it is provided with and annular groove（23）What is connected is interior Screw thread；The steel pipe（1）Handled using following methods：A, pickling, at room temperature, by steel pipe（1）It is immersed in pickle, goes the oxide layer of skim-coat；B, plating is helped, steel pipe is covered in liquid fluxing agent film layer（1）Surface；C, drying, the drying of workpiece surface to be plated is kept；D, zinc is soaked；E, it is surface-treated, in inner tube（2）Inwall and outer tube（3）Outer wall carry out blasting treatment；The interior corrosion-resistant plastic layer（10）With outer epoxy resin powder last layer（8）Raw material is identical, and their raw material wraps by weight Include：80~100 parts of novolac epoxy resin, 50~60 parts of nano silicon, 4~6 parts of phenols curing agent, function additive 3~4 Part, 20~30 parts of the mixture of lanthanum nitrate and samaric nitrate, 1~1.5 part of levelling agent, zirconium oxide, titanium oxide and zinc oxide three Mixture 5-8 parts, 5~8 parts of calcium carbonate, 3~6 parts of calcium phosphate.
- A kind of 2. corrosion resistant plastic-coated steel for facilitating local replacing according to claim 1, it is characterised in that：Described Inner tube（2）The longitudinally disposed interior raised line of one group of inwall circumference uniform distribution（14）, the raised line in any two（14）Between inner tube （2）One group of internal projection is equipped with inwall（15）.
- A kind of 3. corrosion resistant plastic-coated steel for facilitating local replacing according to claim 1, it is characterised in that：Described Outer tube（3）The longitudinally disposed outer raised line of one group of outer wall circumference uniform distribution（12）, the raised line outside any two（12）Between outer tube （3）One group of outer lug is equipped with outer wall（13）.
- A kind of 4. corrosion resistant plastic-coated steel for facilitating local replacing according to claim 1, it is characterised in that：In described Corrosion-resistant plastic layer（10）With outer epoxy resin powder last layer（8）Raw material include by weight：90 parts of novolac epoxy resin, nanometer 25 parts of the mixture of 55 parts of silica, 5 parts of phenols curing agent, 3.5 parts of function additive, lanthanum nitrate and samaric nitrate, levelling agent 1.2 Part, 6 parts of the mixture of zirconium oxide, titanium oxide and zinc oxide three, 6 parts of calcium carbonate, 5 parts of calcium phosphate.
- A kind of 5. corrosion resistant plastic-coated steel for facilitating local replacing according to claim 4, it is characterised in that：The nitre Sour 12 parts of lanthanum, 13 parts of the samaric nitrate.
- A kind of 6. corrosion resistant plastic-coated steel for facilitating local replacing according to claim 4, it is characterised in that：The oxygen Change 1 part of zirconium, 2 parts of titanium oxide, 3 parts of zinc oxide three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710785083.3A CN107606328B (en) | 2017-09-04 | 2017-09-04 | Make things convenient for corrosion-resistant plastic-coated steel pipe of local change |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710785083.3A CN107606328B (en) | 2017-09-04 | 2017-09-04 | Make things convenient for corrosion-resistant plastic-coated steel pipe of local change |
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| Publication Number | Publication Date |
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| CN107606328A true CN107606328A (en) | 2018-01-19 |
| CN107606328B CN107606328B (en) | 2023-03-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710785083.3A Active CN107606328B (en) | 2017-09-04 | 2017-09-04 | Make things convenient for corrosion-resistant plastic-coated steel pipe of local change |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110925499A (en) * | 2019-11-08 | 2020-03-27 | 安徽莱鑫精密特种钢管有限公司 | High-strength small-caliber seamless stainless steel pipe |
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| JP2004169741A (en) * | 2002-11-18 | 2004-06-17 | Kubota Corp | Inner pipe holding device for heat insulation double pipe |
| JP2009299752A (en) * | 2008-06-12 | 2009-12-24 | Sekisui Chem Co Ltd | Composite pipe |
| CN101915064A (en) * | 2010-09-14 | 2010-12-15 | 衡阳华菱钢管有限公司 | Bimetal compound pipe |
| CN104295847A (en) * | 2014-08-18 | 2015-01-21 | 江苏中冶能源设备制造有限公司 | Steel pipe connecting structure |
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| CN205447060U (en) * | 2016-02-23 | 2016-08-10 | 蚌埠市志诚涂装设备科技有限公司 | Plastic -coated steel tube connects sealing connection pipe soon |
| CN106287011A (en) * | 2016-08-29 | 2017-01-04 | 浙江奇爱管业有限公司 | A kind of high Anti-leakage type gas bellows |
| CN206112294U (en) * | 2016-10-07 | 2017-04-19 | 天津浩康科技发展有限公司 | Shock -resistant tubular product |
-
2017
- 2017-09-04 CN CN201710785083.3A patent/CN107606328B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004169741A (en) * | 2002-11-18 | 2004-06-17 | Kubota Corp | Inner pipe holding device for heat insulation double pipe |
| JP2009299752A (en) * | 2008-06-12 | 2009-12-24 | Sekisui Chem Co Ltd | Composite pipe |
| CN101915064A (en) * | 2010-09-14 | 2010-12-15 | 衡阳华菱钢管有限公司 | Bimetal compound pipe |
| CN104295847A (en) * | 2014-08-18 | 2015-01-21 | 江苏中冶能源设备制造有限公司 | Steel pipe connecting structure |
| CN205447060U (en) * | 2016-02-23 | 2016-08-10 | 蚌埠市志诚涂装设备科技有限公司 | Plastic -coated steel tube connects sealing connection pipe soon |
| CN205401976U (en) * | 2016-03-02 | 2016-07-27 | 湖北鑫汉通管业有限公司 | Outer PE's of interior epoxy plastic -coated steel tube |
| CN106287011A (en) * | 2016-08-29 | 2017-01-04 | 浙江奇爱管业有限公司 | A kind of high Anti-leakage type gas bellows |
| CN206112294U (en) * | 2016-10-07 | 2017-04-19 | 天津浩康科技发展有限公司 | Shock -resistant tubular product |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110925499A (en) * | 2019-11-08 | 2020-03-27 | 安徽莱鑫精密特种钢管有限公司 | High-strength small-caliber seamless stainless steel pipe |
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| Publication number | Publication date |
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| CN107606328B (en) | 2023-03-14 |
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