CN210771013U - Electrochemical corrosion protection device for inner wall of conveying pipeline - Google Patents
Electrochemical corrosion protection device for inner wall of conveying pipeline Download PDFInfo
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- CN210771013U CN210771013U CN201920592960.XU CN201920592960U CN210771013U CN 210771013 U CN210771013 U CN 210771013U CN 201920592960 U CN201920592960 U CN 201920592960U CN 210771013 U CN210771013 U CN 210771013U
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Abstract
The application relates to an electrochemical corrosion protection device for the inner wall of a conveying pipeline, which comprises a base fixed on a pipeline to be subjected to corrosion protection, wherein a gland is covered outside the base in a buckling manner; an inner seat is fixed in the base, a screw hole is formed in the upper end of the inner seat, an adjusting bolt is screwed in the screw hole, and the upper end of the adjusting bolt is in top contact with the inner end face of the gland; the detachable anode socket is installed at the lower end of the inner seat, an anode rod is inserted in the anode socket and extends into the pipeline to be protected from corrosion. According to the customized built-in sacrificial anode protection process, the anode rod extending into the pipeline can perform anticorrosion treatment on typical corrosion parts of a well head section, a station inlet manifold and the like through combination of the base and the pipeline. The anode rod installation structure is simple in structure, rapid in anode rod installation and replacement, remarkable in anticorrosion effect and long in anticorrosion duration.
Description
Technical Field
The application relates to the technical field of metal corrosion, in particular to an electrochemical corrosion protection device for the inner wall of a conveying pipeline.
Background
Corrosion protection of pipes refers to measures for slowing down or preventing corrosion and deterioration of pipes under chemical and electrochemical actions of internal and external media or by metabolic activities of microorganisms.
The existing pipeline corrosion prevention working procedure is generally more complicated and consumes longer time. Take the example of the field pipeline manual heavy-duty anticorrosion by five kinds of oil and three kinds of cloth, wherein the oil is used for substituting various anticorrosive coatings, and the cloth refers to various anticorrosive cloth, glass cloth and the like. The specific working procedures comprise derusting, brushing first oil, encapsulating first cloth, brushing second oil, encapsulating second cloth, brushing third oil, encapsulating third cloth, brushing fourth oil and brushing fifth oil. The oil brushing and encapsulating processes are repeated, the processes are complex, the consumed time is long, and the repeated work intensity of workers is high.
At present, the gathering pipeline and the single-well pipeline are treated by modes of internal insertion, coating air-conveying extrusion coating, bimetal composite pipes, glass fiber reinforced plastics and the like, and the well mouth section (the well mouth end to the heating furnace section) and the station entering manifold section which are relatively difficult to treat and implement are treated by good anticorrosion effect in recent years, so that perforation and leakage caused by corrosion are generated successively because anticorrosion measures are not applied favorably. Therefore, the problem of corrosion protection measures for the complicated process pipe section is not very mild.
Disclosure of Invention
The application aims to provide a customized electrochemical corrosion protection device with built-in sacrificial anode protection for the inner wall of a conveying pipeline, aiming at typical corrosion problems of well head sections, station-entering manifolds and other parts.
The purpose of the application is realized as follows: the electrochemical corrosion protection device for the inner wall of the conveying pipeline comprises a base fixed on the pipeline to be protected from corrosion, and a gland is covered outside the base in a buckling manner; an inner seat is fixed in the base, a screw hole is formed in the upper end of the inner seat, an adjusting bolt is screwed in the screw hole, and the upper end of the adjusting bolt is in top contact with the inner end face of the gland; the detachable anode socket is installed at the lower end of the inner seat, an anode rod is inserted in the anode socket and extends into the pipeline to be protected from corrosion.
The inner seat is connected with the base in a rotating mode, and a sealing ring is arranged between the inner seat and the base.
The base is provided with a channel, the channel is divided into an upper sealing channel and a lower mounting channel, and the inner seat is mounted in the sealing channel.
The inner diameter of the sealing channel is larger than that of the mounting channel, and the outer diameter of the inner seat is larger than that of the mounting channel.
Due to the adoption of the technical scheme, the customized built-in sacrificial anode protection process is adopted, and the anode rod extending into the pipeline can perform anticorrosion treatment on typical corrosion parts of a well head section, a station-entering manifold and the like through the combination of the base and the pipeline. The anode rod installation structure is simple in structure, rapid in anode rod installation and replacement, remarkable in anticorrosion effect and long in anticorrosion duration.
Drawings
The technical scheme of the application is given by the following drawings and embodiments:
FIG. 1 is a schematic structural diagram of an electrochemical corrosion protection device for the inner wall of a conveying pipeline;
FIG. 2 is a schematic diagram of the structure of the electrochemical corrosion protection device installed on the inner wall of the conveying pipeline.
Legend: 1. gland, 2, adjusting bolt, 3, inner base, 4, base, 5, positive pole socket, 6, positive pole stick.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
Example (b): as shown in fig. 1 and 2, the electrochemical corrosion protection device for the inner wall of the conveying pipeline comprises a base 4 fixed on the pipeline to be protected from corrosion, and a gland 1 is covered outside the base 4 in a buckling manner; an inner seat 3 is fixed in the base 4, a screw hole is formed in the upper end of the inner seat 3, an adjusting bolt 2 is screwed in the screw hole, and the upper end of the adjusting bolt 2 is in top contact with the inner end surface of the gland 1; the detachable anode socket 5 is installed at the lower end of the inner seat 3, an anode rod 6 is inserted in the anode socket 5, and the anode rod 6 extends into a pipeline to be protected from corrosion.
The inner seat 3 is connected with the base 4 in a rotating mode, and a sealing ring is arranged between the inner seat and the base.
The base 4 is provided with a channel which is divided into an upper sealing channel and a lower mounting channel, and the inner seat 3 is mounted in the sealing channel.
The inner diameter of the sealing channel is larger than that of the mounting channel, and the outer diameter of the inner seat is larger than that of the mounting channel.
According to the Cl-ion content, the electric conductivity and the working temperature in the investigation medium components, the belt-shaped or ring-shaped zinc anode, the ring-shaped or rod-shaped aluminum anode can be selected by combining the service working condition of the sacrificial anode. End ring anodes and top rod anodes are recommended in view of the contact of the mountability with the aqueous medium. In consideration of the requirements of field installation and design life, the top rod-shaped anode and the end annular anode or mixed use (the end annular anode and the middle rod-shaped anode) not only meet the field installation conditions, but also have convenient installation and standard service life, and the rod-shaped anode can be perforated under pressure relative to other two anodes, is easy to install and is more suitable for field production and application; the service lives of the strip-shaped anode and the annular anode are not easy to adjust, the service life of the rod-shaped anode is changed according to the size change, the field selection is facilitated, and the design requirement of 5-year service life on the field can be met. Therefore, the rod-shaped aluminum alloy sacrificial anode is recommended to be used for the cathodic protection of the in-situ oil pipe built-in sacrificial anode. Considering that the hole opening cost under pressure is high, the operation difficulty is high, and the economic applicability is poor, the sacrificial anode is arranged at the end part of the header.
When the anti-corrosion device is used, a through hole is formed in a pipeline to be anti-corrosion, the base 4 is fixedly welded on the through hole, the anode rod 6 is fixed on the anode socket 5, and the inner seat 3 is installed, so that the anode rod 6 enters the through hole and enters the pipeline. After the inner base 3 is installed, the adjusting bolt 2 is screwed to move upwards, and the moving distance can be adjusted as required. Finally, the gland 1 is buckled, so that the gland 1 is tightly propped against the adjusting bolt 2, and further downward pressure is applied to the inner seat 3, and the inner seat 3 is firmly combined with the base 4.
The above technical features constitute the best embodiments of the present application, which have strong adaptability and best implementation effect.
Claims (4)
1. The utility model provides a pipeline inner wall electrochemical corrosion protection device which characterized in that: comprises a base fixed on a pipeline to be protected from corrosion, and a gland is covered outside the base in a buckling manner; an inner seat is fixed in the base, a screw hole is formed in the upper end of the inner seat, an adjusting bolt is screwed in the screw hole, and the upper end of the adjusting bolt is in top contact with the inner end face of the gland; the detachable anode socket is installed at the lower end of the inner seat, an anode rod is inserted in the anode socket and extends into the pipeline to be protected from corrosion.
2. The electrochemical corrosion protection device for the inner wall of a conveying pipeline as claimed in claim 1, wherein: the inner seat is connected with the base in a rotating mode, and a sealing ring is arranged between the inner seat and the base.
3. The electrochemical corrosion protection device for the inner wall of a conveying pipeline as claimed in claim 1, wherein: the base is provided with a channel, the channel is divided into an upper sealing channel and a lower mounting channel, and the inner seat is mounted in the sealing channel.
4. The electrochemical corrosion protection device for the inner wall of a conveying pipeline as claimed in claim 3, wherein: the inner diameter of the sealing channel is larger than that of the mounting channel, and the outer diameter of the inner seat is larger than that of the mounting channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920592960.XU CN210771013U (en) | 2019-04-28 | 2019-04-28 | Electrochemical corrosion protection device for inner wall of conveying pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920592960.XU CN210771013U (en) | 2019-04-28 | 2019-04-28 | Electrochemical corrosion protection device for inner wall of conveying pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210771013U true CN210771013U (en) | 2020-06-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920592960.XU Active CN210771013U (en) | 2019-04-28 | 2019-04-28 | Electrochemical corrosion protection device for inner wall of conveying pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210771013U (en) |
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2019
- 2019-04-28 CN CN201920592960.XU patent/CN210771013U/en active Active
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