Self-stripping anode for paraffin precipitation container

Abstract

The utility model provides a self-stripping anode for a paraffin precipitation container, which comprises a mounting seat, an anode and a spiral metal wire are mounted on the mounting seat, the spiral metal wire is spirally wound on the periphery of the anode, a gap is reserved between the spiral metal wire and the anode, and the anode and the spiral metal wire are respectively connected with an external power supply. The self-stripping anode can strip a wax deposition layer on the surface of the anode, and the use limitation of an impressed current system in a wax deposition container is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-corrosion protection, in particular to a self-peeling anode for a wax-depositing container. Background Art

[0002] With the development of the petroleum and petrochemical refining industries, the demand for the storage of crude oil production water and chemical treatment liquids is increasing. Due to the strong corrosiveness of the production water and chemical treatment liquids, storage containers need to be provided with additional anti-corrosion measures. The most common anti-corrosion measure is cathodic protection. At present, the anti-corrosion means for wax-depositing storage tanks mainly rely on the cathodic protection method of anodes. However, due to the extremely harsh corrosion environment (high temperature, high pressure, high corrosiveness, small space, etc.), the efficiency and service life of the anodes are greatly reduced, the anodes are consumed too quickly, and the too frequent replacement greatly reduces the economic performance and use effect. Relatively speaking, the cathodic protection method with impressed current is more reliable. However, the traditional auxiliary anodes generally have the problem of wax deposition on the anode surface in the container. Once the thickness of the wax deposition layer on the auxiliary anode surface reaches a certain level, the entire impressed current cathodic protection system will completely fail, and the wax-depositing container will not be effectively protected. Content of the Utility Model

[0003] In order to solve the above technical problems, the utility model provides a self-peeling anode for a wax-depositing container, which can peel the wax deposition layer on the anode surface and solve the use limitation of the impressed current system in the wax-depositing container.

[0004] The specific technical solution is as follows: A self-peeling anode for a wax-depositing container includes a mounting base, on which an anode and a spiral metal wire are mounted. The spiral metal wire is spirally wound around the outer periphery of the anode, and there is a gap between the spiral metal wire and the anode. The anode and the spiral metal wire are respectively connected to an external power supply.

[0005] Through the above technical solution, the anode, the external power supply and the wax-depositing container form an impressed current cathodic protection circuit. When a wax deposition layer is formed on the anode surface during use, the external power supply provides current for the spiral metal wire to heat and melt the wax deposition layer on the anode surface. After a part of the wax deposition layer on the anode surface melts and peels off, the negative pole of the external power supply disconnects the connection with the spiral metal wire and is connected to the anode. At this time, the external power supply, the anode and the spiral metal wire form an electrolytic circuit, causing cathodic peeling of the wax deposition layer on the anode surface. After the wax deposition layer is peeled off, the external power supply connects the anode and the wax-depositing container to form an impressed current cathodic protection circuit to continue the anti-corrosion protection of the wax-depositing container.

[0006] Preferably, the spiral metal wire is a spiral molybdenum wire or a spiral nickel-chromium alloy wire.

[0007] Through the above technical solution, the molybdenum wire and the nickel-chromium alloy wire have good corrosion resistance, high temperature resistance, high pressure resistance characteristics, and are easy to form, and are more suitable for the harsh environment inside the wax-accumulating container.

[0008] Preferably, the anode is an MMO anode or a platinum anode.

[0009] Through the above technical solution, using an MMO anode or a platinum anode makes the anode more stable.

[0010] Preferably, a wiring cavity is provided on the mounting seat, a cavity cover is installed on the mounting seat at the wiring cavity, a conductive rod is installed on the mounting seat, one end of the conductive rod is connected to the anode, and the other end is located in the wiring cavity and connected to an external power supply. Both ends of the spiral metal wire pass through the mounting seat and are connected to the external power supply in the wiring cavity.

[0011] Through the above technical solution, providing a wiring cavity facilitates the connection of the cable of the external power supply to the anode or the spiral metal wire during the installation of the self-peeling anode, making the installation of the self-peeling anode more convenient.

[0012] Preferably, a sealing ring is installed between the mounting seat and the cavity cover.

[0013] Through the above technical solution, the sealing performance of the wiring cavity is improved to improve the connection stability of the cable to the anode or the spiral metal wire.

[0014] Preferably, a flange is provided on the mounting seat.

[0015] Through the above technical solution, the flange can facilitate the installation of the self-peeling anode on the wax-accumulating container.

[0016] The beneficial effects of the present utility model are as follows:

[0017] 1. Through the cooperation of the self-peeling anode and the external power supply, impressed current cathodic protection can be achieved. When wax accumulates on the anode surface, electric heating wire heating peeling and cathodic peeling of the wax layer can be realized, solving the use limitation of the impressed current system in wax-accumulating containers.

[0018] 2. The spiral molybdenum wire or nickel-chromium alloy wire has good corrosion resistance, high temperature resistance, high pressure resistance characteristics, and is easy to form, and is suitable for the harsh environment inside the wax-accumulating container.

[0019] 3. The self-peeling anode is connected to the wax-accumulating container through a flange and connected to the cable through a wiring cavity, making the installation of the self-peeling anode more convenient. Description of the Drawings

[0020] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the attached drawings required for the description of the embodiments. Obviously, the attached drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other attached drawings can be obtained based on these drawings. Among them:

[0021] Figure 1 is a schematic structural diagram of the present application;

[0022] Figure 2 is Figure 1 a sectional view taken along line A-A;

[0023] Figure 3 is a schematic structural diagram after hiding the flange and the outer shell of the wiring cavity;

[0024] 1. Mounting seat, 2. Anode, 3. Spiral metal wire, 11. Wiring cavity, 12. Cavity cover, 13. Conductive rod, 14. Sealing ring, 15. Flange. Specific embodiments

[0025] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the following will make a detailed description of the specific embodiments of the present utility model in conjunction with the attached drawings of the specification. Many specific details are set forth in the following description to fully understand the present utility model, but the present utility model can also be implemented in other ways different from those described herein. Those skilled in the art can make similar generalizations without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0026] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that can be included in at least one implementation manner of the present utility model. The "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it an independent or selectively exclusive embodiment from other embodiments.

[0027] Embodiment 1

[0028] As Figures 1 - 3 shown, a self-peeling anode for a wax-accumulating container includes a mounting seat 1, on which an anode 2 (MMO anode is used in this embodiment) and a spiral metal wire 3 (spiral molybdenum wire is used in this embodiment) are mounted. The spiral molybdenum wire is spirally wound around the outer periphery of the MMO anode. There is a gap between the spiral molybdenum wire and the MMO anode. The MMO anode and the spiral molybdenum wire are respectively connected to an external power source.

[0029] The MMO anode, the external power supply, and the wax - forming container form an impressed - current cathodic protection circuit. When a wax - forming layer is formed on the anode surface during use, the external power supply provides current to the spiral molybdenum wire, causing it to heat up and melt the wax - forming layer on the MMO anode surface. After part of the wax - forming layer on the MMO anode surface melts and peels off, the negative pole of the external power supply disconnects from the spiral molybdenum wire and connects to the MMO anode. At this time, the external power supply, the MMO anode, and the spiral molybdenum wire form an electrolytic circuit, causing cathodic stripping of the wax - forming layer on the MMO anode surface. After the wax - forming layer is completely stripped, the external power supply connects the MMO anode and the wax - forming container to form an impressed - current cathodic protection circuit, continuing to provide anti - corrosion protection for the wax - forming container.

[0030] A flange 15 is provided on the mounting base 1. A wiring cavity 11 is provided on the mounting base 1. A cavity cover 12 is installed on the mounting base 1 at the wiring cavity 11. A sealing ring 14 is installed between the mounting base 1 and the cavity cover 12. A conductive rod 13 is installed on the mounting base 1. One end of the conductive rod 13 is connected to the anode 2, and the other end is located in the wiring cavity 11 and connected to the external power supply. Both ends of the spiral metal wire 3 pass through the mounting base 1 and are connected to the external power supply in the wiring cavity 11.

[0031] Embodiment 2

[0032] As Figures 1 - 3 shown, a self - stripping anode for a wax - forming container includes a mounting base 1. An anode 2 (a platinum anode is used in this embodiment) and a spiral metal wire 3 (a spiral nickel - chromium alloy wire is used in this embodiment) are installed on the mounting base 1. The spiral nickel - chromium alloy wire is spirally wound around the outer periphery of the platinum anode. There is a gap between the spiral nickel - chromium alloy wire and the platinum anode. The platinum anode and the spiral nickel - chromium alloy wire are respectively connected to the external power supply.

[0033] The platinum anode, the external power supply, and the wax - forming container form an impressed - current cathodic protection circuit. When a wax - forming layer is formed on the platinum anode surface during use, the external power supply provides current to the spiral nickel - chromium alloy wire, causing it to heat up and melt the wax - forming layer on the platinum anode surface. After part of the wax - forming layer on the platinum anode surface melts and peels off, the negative pole of the external power supply disconnects from the spiral nickel - chromium alloy wire and connects to the platinum anode. At this time, the external power supply, the platinum anode, and the spiral nickel - chromium alloy wire form an electrolytic circuit, causing cathodic stripping of the wax - forming layer on the platinum anode surface. After the wax - forming layer is completely stripped, the external power supply connects the platinum anode and the wax - forming container to form an impressed - current cathodic protection circuit, continuing to provide anti - corrosion protection for the wax - forming container.

[0034] A flange 15 is provided on the mounting base 1. A wiring cavity 11 is provided on the mounting base 1. A cavity cover 12 is installed on the mounting base 1 at the wiring cavity 11. A sealing ring 14 is installed between the mounting base 1 and the cavity cover 12. A conductive rod 13 is installed on the mounting base 1. One end of the conductive rod 13 is connected to the anode 2, and the other end is located in the wiring cavity 11 and connected to an external power supply. Both ends of the spiral metal wire 3 pass through the mounting base 1 and are connected to an external power supply in the wiring cavity 11.

[0035] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A self-stripping anode for a wax deposition container, characterized in that: The invention comprises a mounting seat (1), on which an anode (2) and a spiral metal wire (3) are mounted, wherein the spiral metal wire (3) is spirally wound around the outer periphery of the anode (2), a gap is provided between the spiral metal wire (3) and the anode (2), and the anode (2) and the spiral metal wire (3) are respectively connected to an external power source.

2. A self-stripping anode for a wax deposition container according to claim 1, characterized in that: The spiral metal wire (3) is a spiral molybdenum wire or a spiral nickel-chromium alloy wire.

3. A self-stripping anode for a wax deposition container according to claim 1, characterized in that: The anode (2) is a MMO anode or a platinum anode.

4. A self-stripping anode for a wax deposition container according to claim 1, characterized in that: The mounting seat (1) is provided with a wiring cavity (11), a cavity cover (12) is installed on the mounting seat (1) at the wiring cavity (11), a conductive rod (13) is installed on the mounting seat (1), one end of the conductive rod (13) is connected to the anode (2), and the other end is located in the wiring cavity (11) and connected to an external power supply, and the two ends of the spiral metal wire (3) respectively pass through the mounting seat (1) and are connected to the external power supply in the wiring cavity (11).

5. A self-stripping anode for a wax deposition container according to claim 1, characterized in that: A sealing ring (14) is installed between the mounting seat (1) and the cavity cover (12).

6. A self-stripping anode for a wax deposition container according to claim 1, characterized in that: The mounting seat (1) is provided with a flange (15).

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