Casing anode for petroleum pipeline

Abstract

The utility model discloses a casing anode for a petroleum pipeline, and relates to the technical field of petroleum pipelines, in particular to the casing anode for the petroleum pipeline, which comprises a casing body, a semi-ring anodic oxidation plate and a cavity connecting block, a T-shaped positioning block is mounted at the top of the semi-ring anodic oxidation plate, and a semi-ring sealing block is mounted at the bottom of the semi-ring anodic oxidation plate. A strip-shaped sealing block and a clamping block are installed on one side face of the semi-ring anodic oxidation plate, and an L-shaped cavity positioning block is installed on the outer surface of the semi-ring anodic oxidation plate. The casing pipe anode for the petroleum pipeline has the effect of facilitating splicing connection among the multiple semi-ring anode oxidation plates, the multiple anode oxidation plates are buckled with one another and enclasped on the casing pipe, corrosion prevention of the casing pipe is achieved through sacrificial anode oxidation plates, and through cooperation of the T-shaped positioning blocks and the clamping blocks, the casing pipe anode is convenient to assemble and disassemble, and the service life of the casing pipe is prolonged. And the multiple semi-ring anodic oxidation plates can be conveniently spliced and connected, and the purpose of improving the practicability is achieved.

Description

Technical Field

[0001] This utility model relates to the field of oil pipeline technology, specifically to a sleeve anode for oil pipelines. Background Technology

[0002] During oil extraction, the produced fluids from oil wells cause electrochemical corrosion to the casing of oil and water wells, resulting in a shorter service life than expected and frequent occurrences of tubing perforation and sucker rod breakage. Currently, the main anti-corrosion technology for oilfield casings is surface coating protection, often using anti-rust paint. However, the anti-corrosion effect is unsatisfactory, and the protection period is short.

[0003] In the existing technology, the casing anode for oil pipelines uses multiple anodic oxide plates that are interlocked and tightly bound to the casing, sacrificing the anodic oxide plates to achieve corrosion protection for the casing. This method is not convenient for splicing and connecting multiple anodic oxide plates, and the existing casing anode for oil pipelines has poor stability in the connection between multiple anodic oxide plates. The present invention provides a casing anode for oil pipelines that solves the above problems. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a casing anode for oil pipelines, which solves the problems mentioned in the background section.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: A casing anode for oil pipelines includes a casing body, a semi-annular anodized plate, and a cavity connecting block. A T-shaped positioning block is installed on the top of the semi-annular anodized plate, a semi-annular sealing block is installed on the bottom of the semi-annular anodized plate, a strip-shaped sealing block and a locking block are installed on one side of the semi-annular anodized plate, an L-shaped cavity positioning block is installed on the outer surface of the semi-annular anodized plate, a limit spring is installed inside the L-shaped cavity positioning block, a mating block is installed at the end of the limit spring, a rectangular slider is installed at the top and bottom of the mating block, a trapezoidal limit block is installed at the end of the mating block away from the limit spring, a reset spring is installed inside the cavity connecting block, a push plate is installed at one end of the reset spring, a strip-shaped slider is installed at the top and bottom of the push plate, and a push block is installed at the end of the push plate near the reset spring.

[0008] Optionally, a T-shaped positioning groove is provided on the outer surface of the semi-annular anodized plate, and the end of the T-shaped positioning block is inserted into the interior of the T-shaped positioning groove.

[0009] Optionally, a semi-annular anodized plate is fitted onto the outer surface of the sleeve body, and the push plate is located inside the cavity connecting block.

[0010] Optionally, a slot with a depth direction in the left-right direction is provided on the side of the semi-annular anodized plate away from the card block, and the end of the card block is inserted into the inside of the slot.

[0011] Optionally, the cavity connecting block has an L-shaped positioning groove with the vertical direction as the depth direction, and the end of the L-shaped cavity positioning block is inserted into the L-shaped positioning groove.

[0012] Optionally, the length of the L-shaped cavity positioning block is equal to the length of the cavity connecting block, and the position of the push block corresponds to the position of the trapezoidal limiting block.

[0013] Optionally, the L-shaped cavity positioning block has a rectangular groove inside with the vertical direction as the depth direction and the horizontal direction as the length direction. The end of the rectangular slider is located inside the rectangular groove, and the rectangular slider can slide along the length direction of the rectangular groove.

[0014] Optionally, the cavity connecting block has a strip groove inside with the vertical direction as the depth direction and the horizontal direction as the length direction. The end of the strip slider is located inside the strip groove and the strip slider can slide along the length direction of the strip groove. The cavity connecting block has a limit groove inside and the end of the trapezoidal limit block is inserted into the limit groove.

[0015] This utility model provides a casing anode for oil pipelines, which has the following advantages:

[0016] 1. This oil pipeline casing anode, through the setting of semi-ring anodized plates, cavity connecting blocks, T-shaped positioning blocks, semi-ring sealing blocks, strip seals, and clamping blocks, enables the oil pipeline casing anode to facilitate the splicing and connection of multiple semi-ring anodized plates. By interlocking and clamping multiple anodized plates onto the casing, the casing is protected against corrosion by sacrificing the anodized plates. The cooperation of T-shaped positioning blocks and clamping blocks facilitates the splicing and connection of multiple semi-ring anodized plates, thereby improving practicality.

[0017] 2. The casing anode for oil pipelines, through the arrangement of L-shaped cavity positioning blocks, limiting springs, mating blocks, rectangular sliders, trapezoidal limiting blocks, reset springs, push plates, strip sliders, and push blocks, enables the casing anode for oil pipelines to improve the stability of the splicing connection between semi-ring anodized plates. The cooperation of L-shaped cavity positioning blocks, trapezoidal blocks, and cavity connecting blocks facilitates the restriction of the position of the semi-ring anodized plates, improves the stability of the splicing between the semi-ring anodized plates, and achieves the purpose of improving practicality. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a side view of the structure of this utility model;

[0020] Figure 3 This is a top view sectional diagram of the present invention.

[0021] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A;

[0022] Figure 5 This is a structural schematic diagram of the present invention in frontal cross-section;

[0023] Figure 6 This utility model Figure 5 Enlarged structural diagram at point B.

[0024] In the diagram: 1. Sleeve body; 2. Semi-ring anodized plate; 3. Cavity connecting block; 4. T-shaped positioning block; 5. Semi-ring sealing block; 6. Strip sealing block; 7. Clamping block; 8. L-shaped cavity positioning block; 9. Limiting spring; 10. Mating block; 11. Rectangular slider; 12. Trapezoidal limiting block; 13. Reset spring; 14. Push plate; 15. Strip slider; 16. Push block. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Example 1

[0027] Please see Figures 1 to 4This utility model provides a technical solution: a casing anode for oil pipelines, comprising a casing body 1, a semi-annular anodized plate 2, and a cavity connecting block 3. A T-shaped positioning groove is formed on the outer surface of the semi-annular anodized plate 2, and the end of the T-shaped positioning block 4 is inserted into the T-shaped positioning groove. The semi-annular anodized plate 2 is sleeved on the outer surface of the casing body 1. A push plate 14 is located inside the cavity connecting block 3. A groove with a left-right depth direction is formed on the side of the semi-annular anodized plate 2 away from the locking block 7, and the end of the locking block 7 is inserted into the groove. An L-shaped positioning groove with a vertical depth direction is formed inside the cavity connecting block 3. The L-shaped cavity positioning block 8 is inserted into the L-shaped positioning groove. The cavity connecting block 3 has a strip-shaped sliding groove with the depth direction in the vertical direction and the length direction in the horizontal direction. The end of the strip slider 15 is located inside the strip-shaped sliding groove and can slide along the length direction of the strip-shaped sliding groove. The cavity connecting block 3 has a limit groove. The end of the trapezoidal limit block 12 is inserted into the limit groove. A T-shaped positioning block 4 is installed on the top of the semi-annular anodized plate 2. A semi-annular sealing block 5 is installed on the bottom of the semi-annular anodized plate 2. A strip-shaped sealing block 6 and a locking block 7 are installed on one side of the semi-annular anodized plate 2.

[0028] When splicing the semi-ring anodized plates 2, first fit the two semi-ring anodized plates 2 onto the outside of the sleeve body 1, aligning the locking block 7 on one semi-ring anodized plate 2 with the locking groove on the other semi-ring anodized plate 2, and inserting the end of the locking block 7 into the inside of the locking groove. The setting of the strip sealing block 6 improves the sealing performance of the side connection between the two semi-ring anodized plates 2. When splicing the semi-ring anodized plates 2 vertically, move the other semi-ring anodized plate 2 so that the end of the T-shaped positioning block 4 on the semi-ring anodized plate 2 inserts into the inside of the T-shaped positioning groove on the already spliced ​​semi-ring anodized plate 2, which facilitates the splicing between the upper and lower semi-ring anodized plates 2. The setting of the semi-ring sealing block 5 improves the sealing performance of the connection between the upper and lower semi-ring anodized plates 2, facilitates quick splicing, and improves practicality.

[0029] Example 2

[0030] Please see Figures 1 to 6This utility model provides a technical solution: an anode for a casing of oil pipelines, wherein an L-shaped cavity positioning block 8 is installed on the outer surface of a semi-annular anodized plate 2, the length of the L-shaped cavity positioning block 8 is equal to the length of the cavity connecting block 3, the position of the push block 16 corresponds to the position of the trapezoidal limiting block 12, and a rectangular groove is formed inside the L-shaped cavity positioning block 8 with the vertical direction as the depth direction and the horizontal direction as the length direction. The end of the rectangular slider 11 is located inside the rectangular groove, and the rectangular slider 11 can move along the length of the rectangular groove. The L-shaped cavity positioning block 8 has a limit spring 9 installed inside. A mating block 10 is installed at the end of the limit spring 9. A rectangular slider 11 is installed at the top and bottom of the mating block 10. A trapezoidal limit block 12 is installed at the end of the mating block 10 away from the limit spring 9. A reset spring 13 is installed inside the cavity connecting block 3. A push plate 14 is installed at one end of the reset spring 13. A strip slider 15 is installed at the top and bottom of the push plate 14. A push block 16 is installed at the end of the push plate 14 near the reset spring 13.

[0031] In use, to improve the stability of the splicing between the semi-annular anodized plates 2, move the cavity connecting block 3 so that the L-shaped positioning groove on the cavity connecting block 3 is aligned with the L-shaped cavity positioning block 8. Move the cavity connecting block 3 so that the L-shaped cavity positioning block 8 enters the interior of the L-shaped positioning groove on the cavity connecting block 3. When the inclined surface of the trapezoidal limiting block 12 abuts against the edge of the L-shaped positioning groove, the trapezoidal limiting block 12 is subjected to a horizontal component force, and the end of the rectangular slider 11 is located inside the rectangular groove. This causes the trapezoidal limiting block 12 to drive the mating block 10 and the rectangular slider 11 to move, causing the rectangular slider 11 to slide along the length of the rectangular groove. This causes the limiting spring 9 to contract under force, allowing the end of the trapezoidal limiting block 12 to enter the interior of the L-shaped cavity positioning block 8. When the L-shaped cavity positioning block 8 is completely inside the L-shaped positioning groove, the trapezoidal limiting block 12 is aligned with the limiting groove, and the limiting spring 9... The elastic tension allows the end of the trapezoidal limiting block 12 to be inserted into the interior of the limiting groove, which facilitates the restriction of the position of the L-shaped cavity positioning block 8 and improves the stability of the splicing between multiple semi-ring anodized plates 2. Conversely, when disassembling multiple semi-ring anodized plates 2, the push plate 14 is pushed, which causes the push plate 14 to drive the strip slider 15 and the push block 16 to move. The strip slider 15 slides along the length of the strip groove, causing the return spring 13 to contract under force. The position of the push block 16 corresponds to the position of the trapezoidal limiting block 12. The push block 16 abuts against the trapezoidal limiting block 12 and drives the trapezoidal limiting block 12 to move, so that the trapezoidal limiting block 12 completely leaves the limiting groove. Then, the cavity connecting block 3 is moved, so that the L-shaped cavity positioning block 8 leaves the L-shaped positioning groove, making it easy to remove the cavity connecting block 3. Then, the semi-ring anodized plates 2 are moved, making it easy to separate the semi-ring anodized plates 2 and expose the sleeve body 1, which is convenient for disassembly and improves practicality.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A casing anode for oil pipelines, comprising a casing body, a semi-annular anodized plate, and a cavity connecting block, characterized in that: A T-shaped positioning block is installed on the top of the semi-ring anodized plate, a semi-ring sealing block is installed on the bottom of the semi-ring anodized plate, a strip sealing block and a locking block are installed on one side of the semi-ring anodized plate, an L-shaped cavity positioning block is installed on the outer surface of the semi-ring anodized plate, a limit spring is installed inside the L-shaped cavity positioning block, a mating block is installed at the end of the limit spring, a rectangular slider is installed on the top and bottom of the mating block, a trapezoidal limit block is installed at the end of the mating block away from the limit spring, a reset spring is installed inside the cavity connecting block, a push plate is installed at one end of the reset spring, a strip slider is installed on the top and bottom of the push plate, and a push block is installed at the end of the push plate near the reset spring.

2. The casing anode for oil pipelines according to claim 1, characterized in that: The outer surface of the semi-annular anodized plate is provided with a T-shaped positioning groove, and the end of the T-shaped positioning block is inserted into the inside of the T-shaped positioning groove.

3. The casing anode for oil pipelines according to claim 1, characterized in that: The semi-annular anodized plate is sleeved on the outer surface of the sleeve body, and the push plate is located inside the cavity connecting block.

4. The casing anode for oil pipelines according to claim 1, characterized in that: The side of the semi-annular anodized plate away from the card block has a card slot with the left-right direction as the depth direction, and the end of the card block is inserted into the inside of the card slot.

5. The casing anode for oil pipelines according to claim 1, characterized in that: The cavity connecting block has an L-shaped positioning groove with the vertical direction as the depth direction, and the end of the L-shaped cavity positioning block is inserted into the L-shaped positioning groove.

6. The casing anode for oil pipelines according to claim 1, characterized in that: The length of the L-shaped cavity positioning block is equal to the length of the cavity connecting block, and the position of the push block corresponds to the position of the trapezoidal limiting block.

7. The casing anode for oil pipelines according to claim 1, characterized in that: The L-shaped cavity positioning block has a rectangular groove inside, with the vertical direction as the depth direction and the horizontal direction as the length direction. The end of the rectangular slider is located inside the rectangular groove, and the rectangular slider can slide along the length direction of the rectangular groove.

8. The casing anode for oil pipelines according to claim 1, characterized in that: The cavity connecting block has a strip-shaped groove inside, with the vertical direction as the depth direction and the horizontal direction as the length direction. The end of the strip slider is located inside the strip groove, and the strip slider can slide along the length direction of the strip groove. The cavity connecting block has a limit groove inside, and the end of the trapezoidal limit block is inserted into the limit groove.

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