CN114592193A - Sacrificial anode and cathode protector for oil pipe and preparation method thereof - Google Patents
Sacrificial anode and cathode protector for oil pipe and preparation method thereof Download PDFInfo
- Publication number
- CN114592193A CN114592193A CN202011406555.8A CN202011406555A CN114592193A CN 114592193 A CN114592193 A CN 114592193A CN 202011406555 A CN202011406555 A CN 202011406555A CN 114592193 A CN114592193 A CN 114592193A
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- sacrificial anode
- oil pipe
- anode material
- layer
- tubular support
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- 230000001012 protector Effects 0.000 title claims abstract description 37
- 238000002360 preparation method Methods 0.000 title claims description 6
- 239000010410 layer Substances 0.000 claims abstract description 59
- 239000010405 anode material Substances 0.000 claims abstract description 51
- 239000011247 coating layer Substances 0.000 claims abstract description 24
- 238000005266 casting Methods 0.000 claims abstract description 15
- 238000000137 annealing Methods 0.000 claims abstract description 12
- 238000005096 rolling process Methods 0.000 claims abstract description 12
- 238000001816 cooling Methods 0.000 claims abstract description 8
- 239000013078 crystal Substances 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 17
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052749 magnesium Inorganic materials 0.000 claims description 4
- 239000011777 magnesium Substances 0.000 claims description 4
- 229910052725 zinc Inorganic materials 0.000 claims description 4
- 239000011701 zinc Substances 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000004090 dissolution Methods 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 10
- 238000009826 distribution Methods 0.000 abstract description 7
- 239000003921 oil Substances 0.000 description 58
- 238000005260 corrosion Methods 0.000 description 15
- 230000007797 corrosion Effects 0.000 description 15
- 238000009792 diffusion process Methods 0.000 description 3
- 239000003129 oil well Substances 0.000 description 3
- 239000010779 crude oil Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- 238000009827 uniform distribution Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004210 cathodic protection Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
- C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
- C23F13/06—Constructional parts, or assemblies of cathodic-protection apparatus
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F2213/00—Aspects of inhibiting corrosion of metals by anodic or cathodic protection
- C23F2213/30—Anodic or cathodic protection specially adapted for a specific object
- C23F2213/32—Pipes
Abstract
The invention discloses a sacrificial anode cathode protector for an oil pipe, which comprises a tubular supporting body, wherein a binding layer is formed on the outer circumferential surface of the tubular supporting body, a coating layer formed by a sacrificial anode material is formed on the outer circumferential surface of the binding layer, the coating layer is formed by a plate obtained by rolling and annealing the sacrificial anode material, and the binding layer is a binding layer obtained by rapidly cooling a thin-layer structure cast by the sacrificial anode material to obtain a fine isometric crystal region. The coating layer is made of a sacrificial anode material, and the coating layer formed by a plate after rolling and annealing can realize uniform tissue distribution and stable and controllable grain size of the sacrificial anode material, avoid electrochemical nonuniformity and improve the performance of uniform activity and dissolution; and a bonding layer is arranged to realize metallurgical bonding connection of the coating layer and the tubular supporting body, and the thin-layer structure formed by casting is rapidly cooled to obtain the bonding layer of a fine isometric crystal area, so that the purpose of grain refinement can be realized, and uniform connection can be realized.
Description
Technical Field
The invention relates to the technical field of material corrosion and protection of a steel oil pipe system in the field of oil and gas field exploitation, in particular to a sacrificial anode-cathode protector for an oil pipe and a preparation method thereof.
Background
With the increasing consumption and demand of China on energy, the exploitation depth of most oil fields in western China is deeper and deeper, the non-oil components in the crude oil are more and more complex along with the increasing formation temperature, the service environment of an oil pipe is more and more severe, and the crude oil contains high H2S/CO2When the acid gas is generated, the steel oil pipe is tightly closedThe severe corrosion causes the corrosion problem of the oil pipe, influences the service life of the oil pipe, even causes severe safety accidents such as oil pipe fracture and the like, and seriously influences the safe production of the oil-gas field. Meanwhile, the sacrificial anode for protecting the oil pipe at present usually welds the sacrificial anode material to the surface of the oil pipe in a welding mode in a segmented and combined mode. The sacrificial anode slicing is easy to be dissolved preferentially from the position connected with the oil pipe welding seam, and a metal electric connection channel is lost between the anode material and the oil pipe. Corrosive media in petroleum directly enter between the sacrificial anode material and the oil pipe through the holes dissolved by corrosion to cause corrosion of the sacrificial anode material and the oil pipe, and corrosion products are stacked at the positions of the gaps and cannot diffuse automatically. With the resistance between the oil pipe and the sacrificial anode material increasing due to the continuous generation of corrosion products, the sacrificial anode cannot provide enough anode current to the surface of the steel oil pipe, so that the problem of loss of protection performance is caused. In addition, the existing cast sacrificial anode cathode protector adopts a one-time casting forming process, so that the problem of component segregation caused by uncontrollable grain size and component distribution exists, and the serious local dissolution is easy to occur in the service process to cause local falling, thereby influencing the safety of oil extraction operation in the service process of the cathode protector.
With the development of oil field exploitation, particularly the improvement of water content and salt content in the middle and later stages of an oil well, the corrosion of a steel oil pipe is more serious, the depth of the oil well is deeper and deeper, the unpredictability of oil pipe corrosion caused by local cracking due to the conventional coating protection, the thermal expansion and cooling of an inner liner oil pipe and the introduction of defects in the processing process becomes more and more important, and the passive protection effect provided by the high-reliability sacrificial anode cathodic protection is more and more important. The currently published cathode protectors include 3 patent documents, wherein, an oil pipe cathode protector with publication number CN208038556U and an oil pipe cathode protector with publication number CN202482437U can protect the oil pipe to a certain extent, but both of the two types of cathode protectors are combined by a mechanical connection method, and after a period of service, corrosive media enter between the anode material and the support pipe to corrode and form the accumulation of corrosion products, so as to greatly improve the resistance value of the anode discharge channel, and the anode dissolution current is greatly reduced, thus the high-reliability protection of the oil pipe cannot be effectively provided. The patent document of the oil pipe cathode protector with the publication number of CN204251715U solves the problem of stability of an anode dissolution discharge channel between an anode material and a support pipe to a certain extent, but because a one-step casting molding process is adopted, the problem of component segregation caused by uncontrollable grain size and component distribution exists, and the oil pipe cathode protector is easy to cause local falling due to severe local dissolution in the service process, thereby affecting the safety of oil extraction operation in the service process of the cathode protector.
In addition, the corrosion problem in the oil pipes of the Tahe oil field and the northward oil field is more prominent at present, and the corrosion protection problem of the oil pipes of the oil fields cannot be solved by the methods.
Therefore, how to provide a sacrificial anode-cathode protector for oil pipe which can solve the corrosion protection problem of oil pipe in oil field becomes a technical problem which needs to be solved urgently by those skilled in the art.
Disclosure of Invention
The invention discloses a sacrificial anode cathode protector for an oil pipe, which comprises a tubular supporting body, wherein a binding layer is formed on the outer circumferential surface of the tubular supporting body, a coating layer formed by a sacrificial anode material is formed on the outer circumferential surface of the binding layer, the coating layer is formed by a plate obtained by rolling and annealing the sacrificial anode material, and the binding layer is a binding layer obtained by rapidly cooling a thin-layer structure cast by the sacrificial anode material to obtain a fine isometric crystal area.
Preferably, the sacrificial anode material is aluminum or zinc or magnesium or an alloy of at least two of the foregoing.
Preferably, the bonding layer has a thickness of 2mm or less.
Preferably, the sum of the thicknesses of the clad layer and the bonding layer is 6 to 8 mm.
Preferably, the outer circumferential surfaces of the two end parts of the tubular supporting body are provided with screw threads, and the screw threads are matched with the thread shapes on the oil pipe connected with the tubular supporting body.
Preferably, the tubular support is a steel tubing.
The sacrificial anode cathode protector for the oil pipe has the following technical effects:
the coating layer is made of a sacrificial anode material and is formed by a plate after rolling and annealing, and the coating layer can realize uniform tissue distribution and stable and controllable grain size of the sacrificial anode material, avoid electrochemical nonuniformity and improve the performance of uniform activity and dissolution; and a bonding layer is arranged to realize metallurgical bonding connection of the coating layer and the tubular supporting body, and the thin-layer structure formed by casting is rapidly cooled to obtain the bonding layer of a fine isometric crystal area, so that the purpose of grain refinement can be realized, and uniform connection can be realized. The protector can solve the problem that the anode material is directly welded on the inner wall and the outer wall or the outer wall is coated by extrusion or the inner wall is hungry 39313in the prior art, and can avoid the phenomenon that the surface is seriously locally dissolved due to the surface electrochemical nonuniformity caused by the nonuniform grain size and components of the protector formed by the traditional casting process, thereby realizing the uniform dissolution and stable discharge of the surface.
Preferably, the sacrificial anode material is available in a wide variety of alternative types.
Preferably, the bonding layer is extremely thin and fine equiaxed regions are easily obtained.
Preferably, the screw thread is processed, so that the connection with the oil pipe is convenient to realize.
Preferably, the tubular support is a steel tubing, which is readily available.
The invention also provides a preparation method of the sacrificial anode cathode protector for the oil pipe, which comprises the following steps:
providing a tubular support body;
heating the tubular support body to the temperature of 680-700 ℃, casting a sacrificial anode material on the outer circumferential surface of the tubular support body at the temperature to form a thin layer structure, and then rapidly cooling to form a bonding layer;
and coating a coating layer formed by a plate obtained by rolling and annealing the sacrificial anode material on the outer circumferential surface of the bonding layer.
Preferably, the tubular support is heated to 680-700 ℃, maintained at that temperature for 3min and then cast, and maintained at that temperature for 4min and then cooled after casting.
Preferably, after a tubular supporting body is provided, the outer circumferential surfaces of the two end parts of the tubular supporting body are respectively provided with a screw thread, and the screw threads are matched with the thread shapes on an oil pipe connected with the tubular supporting body.
Preferably, the thickness of the thin-layer structure is 2mm or less.
The method has the following technical effects:
the tubular support body is heated to 680-700 ℃, so that the cast sacrificial anode material can be conveniently diffused to form a thin layer structure, and after the tubular support body is rapidly cooled, a fine equiaxed crystal area can be obtained, so that the controllable grain size is realized, and the casting method is different from the traditional casting method. And the outer circumferential surface of the bonding layer is coated with a coating layer formed by a plate obtained by rolling and annealing the sacrificial anode material, so that the uniform tissue distribution and stable and controllable grain size of the sacrificial anode material can be realized, the electrochemical nonuniformity can be avoided, and the uniform activity and dissolution performance can be improved.
Preferably, after the temperature is maintained at 680-700 ℃ for 3min, the tubular support body can be heated well and maintained at a higher temperature for a longer time, so that the cast sacrificial anode material can be diffused quickly to achieve the effect of thinning, and then maintained for 4min, so that the sacrificial anode material can be diffused quickly to achieve uniform distribution. Of course, the method is not limited to this, as long as it is sufficient to form a thin layer structure by rapid diffusion.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of a sacrificial anode-cathode protector for an oil pipe according to the present invention.
The reference numerals in fig. 1 are as follows:
1 tubular support, 2 binding layer, 3 coating layer and 4 screw threads.
Detailed Description
Fig. 1 is a schematic structural diagram of an embodiment of a sacrificial anode-cathode protector for an oil pipe according to the present invention.
With reference to fig. 1, the present invention provides a sacrificial anode cathode protector for an oil pipe, including a tubular supporting body 1, wherein a bonding layer 2 is formed on an outer circumferential surface of the tubular supporting body 1, a coating layer 3 formed of a sacrificial anode material is formed on an outer circumferential surface of the bonding layer 2, the coating layer 3 is a coating layer 3 formed from a plate obtained by rolling and annealing the sacrificial anode material, and the bonding layer 2 is a bonding layer 2 obtained by rapidly cooling a thin-layer structure cast from the sacrificial anode material to obtain a fine isometric region.
The coating layer 3 is made of a sacrificial anode material and is formed by a plate after rolling and annealing, the coating layer 3 can realize uniform tissue distribution and stable and controllable grain size of the sacrificial anode material, can avoid electrochemical nonuniformity and improve the performance of uniform activity and dissolution; and a bonding layer 2 is arranged to realize metallurgical bonding connection of the coating layer 3 and the tubular supporting body 1, and the bonding layer 2 is a thin layer structure formed by casting and is rapidly cooled to obtain a fine isometric crystal area, so that the purpose of grain refinement can be realized, and uniform connection can be realized. The protector can solve the problem that the anode materials are directly welded on the inner wall and the outer wall or the outer wall is coated by extrusion or the inner wall is hungry 39313in the prior art, and can avoid the phenomenon that the serious local dissolution phenomenon is caused on the surface due to the surface electrochemical nonuniformity caused by the nonuniform grain size and components of the protector formed by the traditional casting process, and realize the uniform dissolution and stable discharge of the surface.
Wherein the sacrificial anode material is aluminum or zinc or magnesium or an alloy formed by at least two of the aluminum, the zinc and the magnesium.
The sacrificial anode material is available in a wide variety of alternative types.
In this embodiment, the bonding layer 2 has a thickness of 2mm or less.
The bonding layer 2 is extremely thin and a fine equiaxed region is easily obtained.
The sum of the thicknesses of the clad layer 3 and the bonding layer 2 is 6 to 8 mm.
As shown in fig. 1, the outer circumferential surfaces of the two ends of the tubular support 1 are provided with screw threads 4, and the screw threads 4 are matched with the thread shape on the oil pipe connected with the tubular support 1.
The screw thread 4 is processed, so that the connection with the oil pipe is convenient to realize.
Further, the tubular support body 1 is a steel oil pipe.
The tubular supporting body 1 is a steel oil pipe and is convenient to obtain.
The invention also provides a preparation method of the sacrificial anode cathode protector for the oil pipe, which comprises the following steps:
providing a tubular support body 1;
heating the tubular support body 1 to the temperature of 680-700 ℃, casting a sacrificial anode material on the outer circumferential surface of the tubular support body 1 at the temperature to form a thin layer structure, and then rapidly cooling to form a bonding layer 2;
and a coating layer 3 formed by a plate obtained by rolling and annealing the sacrificial anode material is coated on the outer circumferential surface of the bonding layer 2.
The tubular support body 1 is heated to 680-700 ℃ to facilitate the diffusion of the cast sacrificial anode material to form a thin layer structure, and after rapid cooling, a fine equiaxed crystal area can be obtained, thereby realizing controllable grain size, which is different from the traditional casting. And the outer circumference of the binding layer is coated with a coating layer 3 formed by a plate which is obtained by rolling and annealing the sacrificial anode material, so that the uniform tissue distribution and stable and controllable grain size of the sacrificial anode material can be realized, the electrochemical nonuniformity can be avoided, and the uniform activity and dissolution performance can be improved.
Further, the tubular support 1 is heated to 680-700 ℃, maintained at the temperature for 3min and then cast, and maintained at the temperature for 4min and then cooled.
After the temperature is maintained at 680-700 ℃ for 3min, the tubular support body 1 can be heated well and maintained at a higher temperature for a longer time, so that the cast sacrificial anode material can be diffused quickly to achieve the effect of thinning, and then maintained for 4min, so that the sacrificial anode material can be diffused quickly to realize uniform distribution. Of course, the method is not limited to this, as long as it is sufficient to form a thin layer structure by rapid diffusion.
In the method, after a tubular supporting body 1 is provided, screw threads 4 are processed on the outer circumferential surfaces of two end parts of the tubular supporting body 1, and the screw threads 4 are matched with the thread shapes on an oil pipe connected with the tubular supporting body 1.
And the thickness of the thin layer structure is less than or equal to 2 mm.
The invention has the advantages of low cost, simple structure, easy field construction and excellent service discharge protection performance, and can be widely popularized and used in oil field fields.
Compared with the traditional cathode protector, the sacrificial anode material has the advantages that the sacrificial anode material is uniformly dissolved on the surface, the local corrosion phenomenon disappears and large-area corrosion does not occur on the surface of an oil pipe when the sacrificial anode material is applied to an oil field on site at the underground temperature of 150 ℃, and the designed cathode protector can well protect the oil pipe, so that the safe production of an oil well is guaranteed.
The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the scope of the present invention is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the invention.
Claims (10)
1. The sacrificial anode cathode protector for the oil pipe is characterized by comprising a tubular supporting body, wherein a bonding layer is formed on the outer circumferential surface of the tubular supporting body, a coating layer formed by a sacrificial anode material is formed on the outer circumferential surface of the bonding layer, the coating layer is formed by a plate of the sacrificial anode material after rolling and annealing, and the bonding layer is a bonding layer of a thin-layer structure cast by the sacrificial anode material and is rapidly cooled to obtain a fine isometric crystal area.
2. The sacrificial anode cathodic protector for an oil pipe of claim 1 wherein the sacrificial anode material is aluminum or zinc or magnesium or an alloy of at least two thereof.
3. The sacrificial anode cathodic protector for an oil pipe of claim 1 wherein the bonding layer has a thickness of 2mm or less.
4. The sacrificial anode cathodic protector for an oil pipe of claim 3 wherein the sum of the thicknesses of the clad layer and the bonding layer is 6-8 mm.
5. The sacrificial anode cathode protector for oil pipe of claim 1, wherein the tubular support body is provided with screw threads on the outer circumferential surface of both end portions thereof, the screw threads matching with the thread shape on the oil pipe to which the tubular support body is connected.
6. The sacrificial anode cathodic protector for an oil pipe of claim 5 wherein the tubular support is a steel oil pipe.
7. A preparation method of a sacrificial anode cathode protector for an oil pipe is characterized by comprising the following steps:
providing a tubular support body;
heating the tubular support body to the temperature of 680-700 ℃, casting a sacrificial anode material on the outer circumferential surface of the tubular support body at the temperature to form a thin layer structure, and then rapidly cooling to form a bonding layer;
and coating a coating layer formed by a plate obtained by rolling and annealing the sacrificial anode material on the outer circumferential surface of the bonding layer.
8. The method for preparing a sacrificial anode cathode protector for an oil pipe as claimed in claim 7, wherein the tubular support is heated to 680-700 ℃, maintained at the temperature for 3min and then cast, and maintained at the temperature for 4min and then cooled after casting.
9. The method for preparing a sacrificial anode cathode protector for an oil pipe as claimed in claim 7, wherein after providing a tubular support, the outer circumferential surfaces of both ends of the tubular support are threaded, and the threads are matched with the thread shape on the oil pipe connected to the tubular support.
10. The method of making a sacrificial anode cathodic protector for an oil pipe as recited in claim 7 wherein the thickness of the thin layer structure is less than or equal to 2 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011406555.8A CN114592193A (en) | 2020-12-04 | 2020-12-04 | Sacrificial anode and cathode protector for oil pipe and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011406555.8A CN114592193A (en) | 2020-12-04 | 2020-12-04 | Sacrificial anode and cathode protector for oil pipe and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114592193A true CN114592193A (en) | 2022-06-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011406555.8A Pending CN114592193A (en) | 2020-12-04 | 2020-12-04 | Sacrificial anode and cathode protector for oil pipe and preparation method thereof |
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| CN (1) | CN114592193A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11293372A (en) * | 1998-04-07 | 1999-10-26 | Sumitomo Light Metal Ind Ltd | Aluminum alloy clad material for heat exchanger, having high strength and high corrosion resistance |
| CN201169624Y (en) * | 2007-12-25 | 2008-12-24 | 濮阳市东昊机械电子有限公司 | Oil tube cathode protector |
| CN202022983U (en) * | 2011-03-14 | 2011-11-02 | 中国石油大学(华东) | Composite sacrificial anode oil tube short section for cathodic protection |
| CN202482437U (en) * | 2011-08-03 | 2012-10-10 | 濮阳市中发石油机械有限公司 | Oil tube cathode protector |
| CN204251715U (en) * | 2014-12-08 | 2015-04-08 | 新疆坤源石油技术开发有限公司 | Oil tube cathode protector |
| CN105378126A (en) * | 2013-07-29 | 2016-03-02 | 株式会社Uacj | Aluminum-alloy clad member, method for producing same, and heat exchanger using aluminum-alloy clad member |
| CN106756155A (en) * | 2017-01-24 | 2017-05-31 | 山东德瑞防腐材料有限公司 | Sacrificial anode continuous fusion-cast technique |
| CN107002184A (en) * | 2014-11-21 | 2017-08-01 | 株式会社Uacj | Aluminum alloy clad sheet for heat exchangers |
| CN208038556U (en) * | 2018-04-13 | 2018-11-02 | 新疆奥睿博节能科技发展有限公司 | A kind of oil tube cathode protector |
| CN109797323A (en) * | 2018-12-29 | 2019-05-24 | 上海华峰铝业股份有限公司 | A kind of highly corrosion resistant MULTILAYER COMPOSITE aluminium alloy pipe and its production method |
-
2020
- 2020-12-04 CN CN202011406555.8A patent/CN114592193A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11293372A (en) * | 1998-04-07 | 1999-10-26 | Sumitomo Light Metal Ind Ltd | Aluminum alloy clad material for heat exchanger, having high strength and high corrosion resistance |
| CN201169624Y (en) * | 2007-12-25 | 2008-12-24 | 濮阳市东昊机械电子有限公司 | Oil tube cathode protector |
| CN202022983U (en) * | 2011-03-14 | 2011-11-02 | 中国石油大学(华东) | Composite sacrificial anode oil tube short section for cathodic protection |
| CN202482437U (en) * | 2011-08-03 | 2012-10-10 | 濮阳市中发石油机械有限公司 | Oil tube cathode protector |
| CN105378126A (en) * | 2013-07-29 | 2016-03-02 | 株式会社Uacj | Aluminum-alloy clad member, method for producing same, and heat exchanger using aluminum-alloy clad member |
| CN107002184A (en) * | 2014-11-21 | 2017-08-01 | 株式会社Uacj | Aluminum alloy clad sheet for heat exchangers |
| CN204251715U (en) * | 2014-12-08 | 2015-04-08 | 新疆坤源石油技术开发有限公司 | Oil tube cathode protector |
| CN106756155A (en) * | 2017-01-24 | 2017-05-31 | 山东德瑞防腐材料有限公司 | Sacrificial anode continuous fusion-cast technique |
| CN208038556U (en) * | 2018-04-13 | 2018-11-02 | 新疆奥睿博节能科技发展有限公司 | A kind of oil tube cathode protector |
| CN109797323A (en) * | 2018-12-29 | 2019-05-24 | 上海华峰铝业股份有限公司 | A kind of highly corrosion resistant MULTILAYER COMPOSITE aluminium alloy pipe and its production method |
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