CN201193758Y - Electrochemical alloy nano coated anti-corrosive insulating pipe - Google Patents
Electrochemical alloy nano coated anti-corrosive insulating pipe Download PDFInfo
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- CN201193758Y CN201193758Y CNU2007201177983U CN200720117798U CN201193758Y CN 201193758 Y CN201193758 Y CN 201193758Y CN U2007201177983 U CNU2007201177983 U CN U2007201177983U CN 200720117798 U CN200720117798 U CN 200720117798U CN 201193758 Y CN201193758 Y CN 201193758Y
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Abstract
The utility model discloses an electrochemical alloy nanometer coating anti-septic insulating tube with a plurality of protective functions. A metallic tube (1) serves as the base body of the insulating tube; an anti-septic coating (2) is arranged in the inner surface of the metallic tube (1); an alloy layer (3), a thermal insulation layer (4) and a protection layer (5) are arranged in the outer surface of the metallic tube (1) in order. The service life of the anti-septic insulating tube after the alloyage treatment is prolonged as the phenomenon of cathode screen of the insulating tube is eliminated due to the existence of the alloy coating.
Description
Technical field:
The utility model relates to a kind of directly buried type anti-corrosion heat insulation pipe, and concrete is to utilize electrochemistry and coating pipeline to be carried out the anti-corrosion heat insulation pipe of duplicate protection.
Background technique:
At present the main structure of anti-corrosion heat insulation pipe is that steel pipe is followed successively by corrosion-inhibiting coating, thermal insulation layer, protective coating outward, and wherein anticorrosive coat mostly is petroleum tar, epoxide coal bituminous, fusion epoxy powder etc.; Thermal insulation layer generally adopts polyurethane foam etc.The corrosion-inhibiting coating of this kind anti-corrosion heat insulation pipe is thicker, and cladding material itself has certain anti-corrosion capability, but the physicochemical property of coating and body differs greatly, and causes anti-corrosion pipe in use for some time, anticorrosive coat aliquation, obscission just occur.After the thermal insulation layer breakage; the iron-based body of anticorrosive coat rent promptly directly contacts with aggressive medium; cause body serious accelerated corrosion to occur; adopt well-known electrochemical protection method (impressed current, heap bury anode) but the cathode screen because of thermal insulation layer lost efficacy; cause the corrosion of thermal insulation layer infiltration depths even more serious, this problem does not still have effective workaround so far.
The model utility content:
Technical problem to be solved in the utility model is to solve the problem that exists in the background technique, a kind of long service life is provided, maintenance expenses is low and has the corrosion-resistanting insulation pipe of the directly buried type of multiple protective effect.
For achieving the above object, technical solution of the present utility model is: the matrix of electrochemistry alloy nano coating anti-corrosion heat insulation pipe is a metal tube, be coated with at the internal surface of metal tube and be coated with corrosion-inhibiting coating, outer surface is alloy-layer, thermal insulation layer, protective coating successively, between thermal insulation layer and protective coating, along metal tube circumferentially be provided with support, this support inserts in thermal insulation layer.
Preferred corrosion-inhibiting coating is a nano coating, and alloy-layer is zinc, aluminium or chromium alloy layer, and the thermal insulating material of thermal insulation layer is a polyurethane, and protective coating is to be enclosed within the outer plastic tube of thermal insulation layer.
Technique effect of the present utility model is: because of the alloy-layer of electrochemistry alloy nano coating anti-corrosion heat insulation pipe adopt be the zinc that on the steel and iron parts surface, obtains of hot dip galvanizing method, aluminium and (or) zinc-iron alloy layer, the polarization potential of zinc, aluminum ratio iron and steel is more negative, can also provide anode loss protection to parent metal when hot galvanized layer is impaired in corrosive environment, promptly provide from the cathode polarization function; Some corrosion-resistanting insulation pipe has also adopted cathodic protection simultaneously in the prior art, but there is the cathode screen phenomenon in conventional cathode protecting process, make thermal insulation layer infiltration depths become the blind area of electrochemical protection, and through the anti-corrosion heat insulation pipe after the Alloying Treatment, eliminated the cathode screen phenomenon of thermal insulation pipe because of the existence of alloy layer, so under non-heavy corrosion condition, the corrosion-resistant life with anti-corrosion heat insulation pipe of hot galvanized layer can reach 25～40 years; The inwall of anti-corrosion heat insulation pipe scribbles nano coating in addition, has performances such as extremely strong antiscale, anticorrosion, wax control, so electrochemistry alloy nano coating anti-corrosion heat insulation pipe protects the pipeline matrix from many aspects, has prolonged working life.
Description of drawings:
Fig. 1 is a structural representation of the present utility model.
Embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing.
By shown in Figure 1, the matrix of electrochemistry alloy nano coating anti-corrosion heat insulation pipe is a metal tube 1, internal surface at metal tube 1 is that corrosion-inhibiting coating 2, outer surface are alloy-layer 3, thermal insulation layer 4, protective coating 5 successively, between thermal insulation layer 4 and protective coating 5, along metal tube circumferentially be provided with support 6, this support 6 inserts in thermal insulation layers 4.Wherein corrosion-inhibiting coating 2 is a nano coating, and alloy-layer 3 is zinc or aluminium alloy layer, and thermal insulation layer 4 is a polyurethane insulation coating, and protective coating 5 is for being enclosed within the plastic tube outside the thermal insulation layer 4.
Wherein alloy-layer 4 thickness are preferably 60 μ m～200 μ m, and nano coating 2 thickness are preferably more than 100 μ m.
The nano coating of electrochemistry alloy nano coating anti-corrosion heat insulation pipe can adopt conventional spraying method to apply.The allumen layer can adopt the dry method hot dip galvanizing process.Be about to through the surface of pretreatment do not have oil, metal tube rustless, that expose the iron-based body impregnated in the water-soluble fluxing agent, and then oven dry, 170～200 ℃ of drying oven heating-up temperatures, remove immerse again in the zinc liquid behind the moisture of solvent layer zinc-plated.Usually coating be formed with three steps: (1) metal tube surface is formed the alloy phase layer by the dissolving of zinc-aluminium liquid; Zinc-aluminium atom in the alloy-layer further spreads to matrix; Alloy-layer surface envelope the skim pure zinc-aluminium layer, i.e. the top layer of coating.So just formed the Trinitarian metallographic combination of top layer, intermediate alloy layer and matrix.Soft the plaing in top layer subtracts the effect of hitting, and intermediate alloy layer hardness ratio common tube can improve about 50%, and impact resistance and wear resistance all greatly improve.
Thermal insulation layer adopts one-step method production process of the prior art, promptly inject the foaming technology, the operating process of injecting is: press formula rate, after the evenly abundant mixing of urethane raw, inject mould, carry out foaming when chemical reaction takes place after, extrusioning plastics makes thermal insulation layer in die for molding from extruder.
This product is on-the-spot on probation at Daqing oil field, and reflection is respond well after trying out.
Claims (6)
1. electrochemistry alloy nano coating anti-corrosion heat insulation pipe, it is characterized in that: matrix is metal tube (1), internal surface at metal tube (1) is that corrosion-inhibiting coating (2), outer surface are alloy-layer (3), thermal insulation layer (4), protective coating (5) successively, between thermal insulation layer (4) and protective coating (5), along metal tube (1) circumferentially be provided with support (6), this support (6) inserts in the thermal insulation layer (4).
2. according to the described electrochemistry alloy nano of claim 1 coating anti-corrosion heat insulation pipe, it is characterized in that: described corrosion-inhibiting coating (2) is a nano coating.
3. according to the described electrochemistry alloy nano of claim 1 coating anti-corrosion heat insulation pipe, it is characterized in that: described alloy-layer (3) is zinc, aluminium or chromium alloy layer.
4. according to the described electrochemistry alloy nano of claim 1 coating anti-corrosion heat insulation pipe, it is characterized in that: the material of described thermal insulation layer (4) is a polyurethane.
5. according to the described electrochemistry alloy nano of claim 1 coating anti-corrosion heat insulation pipe, it is characterized in that: described protective coating (5) is for being enclosed within the plastic tube outside the thermal insulation layer (4).
6. according to the described electrochemistry alloy nano of claim 1 coating anti-corrosion heat insulation pipe, it is characterized in that: described alloy-layer (4) thickness is 60 μ m～200 μ m, and corrosion-inhibiting coating (2) thickness is greater than 100 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201177983U CN201193758Y (en) | 2007-12-27 | 2007-12-27 | Electrochemical alloy nano coated anti-corrosive insulating pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201177983U CN201193758Y (en) | 2007-12-27 | 2007-12-27 | Electrochemical alloy nano coated anti-corrosive insulating pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201193758Y true CN201193758Y (en) | 2009-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201177983U Expired - Fee Related CN201193758Y (en) | 2007-12-27 | 2007-12-27 | Electrochemical alloy nano coated anti-corrosive insulating pipe |
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| CN (1) | CN201193758Y (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102003595A (en) * | 2009-09-02 | 2011-04-06 | 霓佳斯株式会社 | Thermal insulation material |
| CN102809023A (en) * | 2012-08-22 | 2012-12-05 | 柳州宇特能源科技有限公司 | Composite insulating pipe |
| CN103292068A (en) * | 2013-06-04 | 2013-09-11 | 无锡金顶石油管材配件制造有限公司 | Insulation oil pipe with inside and outside reinforcing rib structures |
| CN103291227A (en) * | 2013-06-04 | 2013-09-11 | 无锡金顶石油管材配件制造有限公司 | High-temperature-resistant and antioxidative heat-insulating petroleum pipe |
| CN103292066A (en) * | 2013-06-04 | 2013-09-11 | 无锡金顶石油管材配件制造有限公司 | Novel oil delivery insulating pipe |
| CN103291226A (en) * | 2013-06-04 | 2013-09-11 | 无锡金顶石油管材配件制造有限公司 | Multi-trunking petroleum pipe structure |
| CN103307372A (en) * | 2013-06-04 | 2013-09-18 | 无锡金顶石油管材配件制造有限公司 | Detachable type double-layer petroleum pipe fitting |
| CN104061665A (en) * | 2013-03-18 | 2014-09-24 | 浙江三花股份有限公司 | Gas collection pipe element and combinatorial method thereof |
| CN106629929A (en) * | 2017-01-20 | 2017-05-10 | 上海为然环保科技有限公司 | Energy saving high-efficient and environmentally-protective sewage device |
| CN106704729A (en) * | 2015-07-28 | 2017-05-24 | 江苏吉华化工有限公司 | Transferring pipe for chemical use |
| CN111520571A (en) * | 2020-05-07 | 2020-08-11 | 安徽唐道电子科技有限公司 | Hot-dip galvanized pipe |
-
2007
- 2007-12-27 CN CNU2007201177983U patent/CN201193758Y/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102003595A (en) * | 2009-09-02 | 2011-04-06 | 霓佳斯株式会社 | Thermal insulation material |
| CN102809023A (en) * | 2012-08-22 | 2012-12-05 | 柳州宇特能源科技有限公司 | Composite insulating pipe |
| CN104061665A (en) * | 2013-03-18 | 2014-09-24 | 浙江三花股份有限公司 | Gas collection pipe element and combinatorial method thereof |
| CN103307372A (en) * | 2013-06-04 | 2013-09-18 | 无锡金顶石油管材配件制造有限公司 | Detachable type double-layer petroleum pipe fitting |
| CN103292066A (en) * | 2013-06-04 | 2013-09-11 | 无锡金顶石油管材配件制造有限公司 | Novel oil delivery insulating pipe |
| CN103291226A (en) * | 2013-06-04 | 2013-09-11 | 无锡金顶石油管材配件制造有限公司 | Multi-trunking petroleum pipe structure |
| CN103291227A (en) * | 2013-06-04 | 2013-09-11 | 无锡金顶石油管材配件制造有限公司 | High-temperature-resistant and antioxidative heat-insulating petroleum pipe |
| CN103292068A (en) * | 2013-06-04 | 2013-09-11 | 无锡金顶石油管材配件制造有限公司 | Insulation oil pipe with inside and outside reinforcing rib structures |
| CN103292068B (en) * | 2013-06-04 | 2015-08-19 | 无锡金顶石油管材配件制造有限公司 | A kind of thermal insulatnig petroleum pipeline with inside and outside reinforcing rib structure |
| CN103292066B (en) * | 2013-06-04 | 2016-04-13 | 无锡金顶石油管材配件制造有限公司 | A kind of oil transportation heat-insulated pipe |
| CN106704729A (en) * | 2015-07-28 | 2017-05-24 | 江苏吉华化工有限公司 | Transferring pipe for chemical use |
| CN106629929A (en) * | 2017-01-20 | 2017-05-10 | 上海为然环保科技有限公司 | Energy saving high-efficient and environmentally-protective sewage device |
| CN106629929B (en) * | 2017-01-20 | 2020-03-27 | 潍坊滨海环保设备有限公司 | Energy-concerving and environment-protective sewage equipment |
| CN111520571A (en) * | 2020-05-07 | 2020-08-11 | 安徽唐道电子科技有限公司 | Hot-dip galvanized pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090211 Termination date: 20161227 |