Anti-theft device in oil exploitation well

Abstract

The utility model discloses an anti-theft device in an oil exploitation well, which relates to the field of oil exploitation and comprises a well casing, and a connecting ring is welded on the inner wall of the well casing. The connecting ring is arranged to clamp and fix the first magnetic block, after the first magnetic block is firmly fixed to the connecting ring, due to the fact that the first magnetic block has strong magnetism, the first magnetic block and the second magnetic block can generate strong magnetic attraction, the second magnetic block is installed on the anti-theft needle cover in advance, and when the anti-theft needle cover is close to a combination body of the connecting ring and the first magnetic block, the anti-theft needle cover is not prone to falling off. Under the action of magnetic force, the second magnetic block can automatically approach to the first magnetic block, so that the installation personnel do not need to carry out accurate manual alignment in a narrow and dark underground space with effort due to the magnetic attraction guide mode, and the magnetic force can guide the anti-theft needle cover to be automatically adjusted to a correct installation position along the direction of a magnetic line of force; installation errors caused by improper manual operation in a traditional installation mode are effectively avoided, and the installation efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of oil extraction, specifically an anti-theft device for oil wells. Background Technology

[0002] Petroleum, known as the "lifeblood of industry," is an extremely important industrial resource. During the oil extraction process, oil is pumped to the surface through wells. However, due to the high economic value of oil, oil theft at oil wellheads is a serious problem. Unscrupulous individuals often illegally open oil wellheads to steal oil, causing huge economic losses. This can also lead to crude oil leaks, which in turn pollute the surrounding land and cause environmental damage. Therefore, an anti-theft device for oil wells is needed.

[0003] Existing anti-theft devices in oil wells have exposed opening mechanisms without effective shielding, making it easy to learn their opening patterns and bypass them. Furthermore, the narrow, dimly lit, and humid environment in the well makes alignment difficult, leading to jamming and misalignment during installation, requiring multiple attempts and reducing efficiency. Therefore, there is an urgent need for an anti-theft device for oil wells. Utility Model Content

[0004] Based on this, the purpose of this utility model is to provide an anti-theft device for oil wells, in order to solve the problems of existing anti-theft devices in oil wells, where the opening method is exposed and not effectively shielded, making it easy to understand the opening pattern and target and crack them. At the same time, when installing the anti-theft device, the underground space is narrow, the light is dim, and the environment is humid, making it difficult to assist in alignment. During the installation process, jamming and misalignment may occur, requiring multiple attempts to complete the installation, which reduces the installation efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an anti-theft device for oil wells, comprising a well pipe, a connecting ring welded to the inner wall of the well pipe, a first magnetic block adhered to the inner wall of each connecting ring, a second magnetic block attached to the outer wall of the first magnetic block, an anti-theft needle cover adhered to the outer wall of the second magnetic block, and a fixing sleeve fixedly connected to the outer wall of each connecting ring.

[0006] The outer wall of the anti-theft needle cover is in contact with steel balls, the outer wall of the steel balls is in contact with iron rings, the outer wall of the iron rings is in contact with springs, one end of the spring is welded with an anti-theft fixing cover, the outer wall of the anti-theft fixing cover is fitted with an unlocking cover, the inner wall of the unlocking cover is bonded with a magnetic ring, and one end of the unlocking cover is provided with a pull rope.

[0007] Preferably, the inner wall of the connecting ring is in close contact with the outer wall of the first magnetic block, and the first magnetic block is arranged in a ring array on the inner wall of the connecting ring.

[0008] Preferably, the outer wall of the second magnetic block is tightly fitted to the inner wall of the anti-theft pin cover, and the second magnetic blocks are arranged in a ring array on the inner wall of the anti-theft pin cover.

[0009] Preferably, the connecting ring engages with the anti-theft needle cover, and the inner wall of the anti-theft needle cover has an open design.

[0010] Preferably, the connecting ring is threaded to the fixing sleeve, and the outer wall of the connecting ring is threaded.

[0011] Preferably, the iron ring is movably connected to the anti-theft fixing cover, and the inner wall of the anti-theft fixing cover has a slotted design.

[0012] Preferably, the unlocking cover is engaged with the magnetic ring, and the inner diameter of the unlocking cover is larger than the outer diameter of the magnetic ring.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model uses a connecting ring to lock and fix the first magnetic block. After the first magnetic block is firmly fixed to the connecting ring, it has strong magnetism and can generate a strong magnetic attraction with the second magnetic block. The second magnetic block is pre-installed on the anti-theft needle cover. When the anti-theft needle cover approaches the combination of the connecting ring and the first magnetic block, the second magnetic block will automatically move closer to the first magnetic block under the action of magnetic force. This magnetic attraction guide method eliminates the need for installers to perform precise manual alignment in the small and dark space underground. The magnetic force will guide the anti-theft needle cover to automatically adjust to the correct installation position along the direction of the magnetic field line, effectively avoiding installation errors caused by improper manual operation in the traditional installation method and greatly improving installation efficiency.

[0015] 2. This utility model uses an anti-theft pin cover to lock and fix the anti-theft fixing cover. Inside the anti-theft fixing cover, a spring, an iron ring, and a steel ball form an ingenious locking assembly. One end of the spring is fixed to the inner wall of the anti-theft fixing cover, and the other end is connected to the iron ring. In its natural state, the spring is compressed and has strong elasticity. When the anti-theft pin cover is inserted, the spring is further compressed, and the resulting elasticity pushes the iron ring towards the anti-theft pin cover. The iron ring is annular, and its inner side has an arc-shaped groove that matches the steel ball. As the iron ring moves, the arc-shaped groove pushes the steel ball outward. During the movement, the steel ball is precisely embedded in the groove on the outer surface of the anti-theft pin cover, forming a firm lock and tightly fixing the anti-theft pin cover and the anti-theft fixing cover together. The anti-theft fixing cover blocks the fixing sleeve, making it difficult to determine the opening pattern of the anti-theft device through conventional observation and probing methods, and also making it impossible to use targeted tools to damage or break the fixing sleeve. Attached Figure Description

[0016] Figure 1 This is a perspective view of the present utility model;

[0017] Figure 2 This is a structural schematic diagram of the present invention viewed from a height and disassembled.

[0018] Figure 3 This is a schematic diagram of the structure of this utility model from a vertical sectional view;

[0019] Figure 4 This utility model Figure 2 Enlarged structural diagram of section A in the middle.

[0020] In the diagram: 1. Well casing; 2. Connecting ring; 3. First magnetic block; 4. Second magnetic block; 5. Anti-theft needle cover; 6. Fixing sleeve; 7. Steel ball; 8. Iron ring; 9. Spring; 10. Anti-theft fixing cover; 11. Unlocking cover; 12. Magnetic ring; 13. Pull rope. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0022] The embodiments of this utility model will be described below based on its overall structure.

[0023] Please see Figure 1-4An anti-theft device for an oil well includes a well casing 1. A connecting ring 2 is welded to the inner wall of the well casing 1. First magnetic blocks 3 are adhered to the inner wall of each connecting ring 2. The inner wall of the connecting ring 2 is tightly fitted to the outer wall of the first magnetic blocks 3, and the first magnetic blocks 3 are arranged in a ring array on the inner wall of the connecting ring 2. Second magnetic blocks 4 are adhered to the outer wall of the first magnetic blocks 3. An anti-theft needle cover 5 is adhered to the outer wall of the second magnetic blocks 4, and the outer wall of the second magnetic blocks 4 is tightly fitted to the inner wall of the anti-theft needle cover 5, and the second magnetic blocks 4 are arranged in a ring array on the inner wall of the anti-theft needle cover 5. The connecting ring 2 and the anti-theft needle cover 5 are engaged and connected. The inner wall of the anti-theft needle cover 5 has an open design. A fixing sleeve 6 is fixedly connected to the outer wall of each connecting ring 2. The connecting ring 2 and the fixing sleeve 6 are threaded together, and the outer wall of the connecting ring 2 is threaded. The device is designed with a connecting ring 2 to engage and secure the first magnetic block 3. Once firmly fixed to the connecting ring 2, the first magnetic block 3, due to its strong magnetism, generates a strong magnetic attraction with the second magnetic block 4. The second magnetic block 4 is pre-installed on the anti-theft needle cover 5. When the anti-theft needle cover 5 approaches the combination of the connecting ring 2 and the first magnetic block 3, the second magnetic block 4 will automatically move towards the first magnetic block 3 under the action of the magnetic force. This magnetic attraction method eliminates the need for installers to perform precise manual alignment in the confined and dimly lit space underground. The magnetic force guides the anti-theft needle cover 5 to automatically adjust to the correct installation position along the magnetic field lines, effectively avoiding installation errors caused by improper manual operation in traditional installation methods and greatly improving installation efficiency.

[0024] Please see Figure 1-4An anti-theft device for oil wells includes an anti-theft needle cover 5 whose outer wall is abutted by steel balls 7, whose outer wall is abutted by iron rings 8, whose outer wall is abutted by springs 9, and an anti-theft fixing cover 10 welded to one end of the springs 9. The iron rings 8 are movably connected to the anti-theft fixing cover 10, and the inner wall of the anti-theft fixing cover 10 has a slotted design. An unlocking cover 11 is installed on the outer wall of the anti-theft fixing cover 10, and a magnetic ring 12 is adhered to the inner wall of the unlocking cover 11. The unlocking cover 11 and the magnetic ring 12 are engaged, and the inner diameter of the unlocking cover 11 is larger than the outer diameter of the magnetic ring 12. A pull rope 13 is provided at one end of the unlocking cover 11. The anti-theft pin cover 5 is set to lock and fix the anti-theft fixing cover 10. Inside the anti-theft fixing cover 10, the spring 9, the iron ring 8 and the steel ball 7 form an ingenious locking component. One end of the spring 9 is fixed to the inner wall of the anti-theft fixing cover 10, and the other end is connected to the iron ring 8. In its natural state, the spring 9 is in a compressed state and has strong elasticity. When the anti-theft pin cover 5 is inserted, the spring 9 is squeezed and further compressed. The resulting elasticity pushes the iron ring 8 to move towards the anti-theft pin cover 5. The iron ring 8 is ring-shaped, and its inner side has an arc-shaped groove that matches the steel ball 7. As the iron ring 8 moves, the arc-shaped groove pushes the steel ball 7 to move outward. During the movement, the steel ball 7 fits into the groove on the outer surface of the anti-theft needle cover 5, forming a firm engagement that tightly fixes the anti-theft needle cover 5 and the anti-theft fixing cover 10 together. The anti-theft fixing cover 10 blocks the blocking fixing sleeve 6, making it difficult to grasp the opening pattern of the anti-theft device through conventional observation and probing methods, and also making it impossible to use targeted tools to damage or break the fixing sleeve 6.

[0025] Working principle: In use, take out the device and place it in the designated position. Engage and fix the connecting ring 2 to the first magnetic block 3. Engage and fix the second magnetic block 4 to the anti-theft pin cover 5. Use the connecting ring 2 to guide and engage the anti-theft pin cover 5. Thread the fixing sleeve 6 onto the connecting ring 2. Press the anti-theft pin cover 5 onto the anti-theft fixing cover 10. This compresses the spring 9, and the resulting elastic force pushes the iron ring 8 towards the anti-theft pin cover 5. The iron ring 8 is annular, with an arc-shaped groove on its inner side that matches the steel ball 7. As the iron ring 8 moves, the arc-shaped groove pushes the steel ball 7 outward. During this movement, the steel ball 7... The anti-theft needle cover 5 is embedded in the groove on the outer surface of the device to form a firm engagement, which securely fixes the anti-theft needle cover 5 and the anti-theft fixing cover 10 together. The connection between the connecting ring 2 and the anti-theft needle cover 5 is blocked. Finally, when it is necessary to open the device, the unlocking cover 11 is engaged and glued to the magnetic ring 12, the unlocking cover 11 is engaged to the anti-theft fixing cover 10, the magnetic ring 12 is magnetically attracted to the steel ball 7 and the iron ring 8 and lifted, the anti-theft fixing cover 10 is removed, the fixing sleeve 6 is unscrewed, and the anti-theft needle cover 5 is removed and opened. This completes the use of the device. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0026] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An anti-theft device for an oil well, comprising a well casing (1), characterized in that: The inner wall of the well pipe (1) is welded with a connecting ring (2), and the inner wall of the connecting ring (2) is bonded with a first magnetic block (3). The outer wall of the first magnetic block (3) is attached with a second magnetic block (4), and the outer wall of the second magnetic block (4) is bonded with an anti-theft needle cover (5). The outer wall of the connecting ring (2) is fixedly connected with a fixing sleeve (6). The outer wall of the anti-theft needle cover (5) is in contact with steel balls (7), the outer wall of the steel balls (7) is in contact with iron rings (8), the outer wall of the iron rings (8) is in contact with springs (9), one end of the springs (9) is welded with an anti-theft fixing cover (10), the outer wall of the anti-theft fixing cover (10) is equipped with an unlocking cover (11), the inner wall of the unlocking cover (11) is bonded with a magnetic ring (12), and one end of the unlocking cover (11) is provided with a pull rope (13).

2. The anti-theft device for an oil well according to claim 1, characterized in that: The inner wall of the connecting ring (2) is closely fitted with the outer wall of the first magnetic block (3), and the first magnetic block (3) is arranged in a ring array on the inner wall of the connecting ring (2).

3. The anti-theft device for an oil well according to claim 1, characterized in that: The outer wall of the second magnetic block (4) is closely fitted with the inner wall of the anti-theft pin cover (5), and the second magnetic block (4) is arranged in a ring array on the inner wall of the anti-theft pin cover (5).

4. The anti-theft device for an oil well according to claim 1, characterized in that: The connecting ring (2) is engaged with the anti-theft needle cover (5), and the inner wall of the anti-theft needle cover (5) is designed with openings.

5. The anti-theft device for an oil well according to claim 1, characterized in that: The connecting ring (2) is threadedly connected to the fixed sleeve (6), and the outer wall of the connecting ring (2) is threaded.

6. The anti-theft device for an oil well according to claim 1, characterized in that: The iron ring (8) is movably connected to the anti-theft fixing cover (10), and the inner wall of the anti-theft fixing cover (10) is a slotted design.

7. The anti-theft device for an oil well according to claim 1, characterized in that: The unlocking cover (11) is engaged with the magnetic ring (12), and the inner diameter of the unlocking cover (11) is larger than the outer diameter of the magnetic ring (12).

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