An oil well pipe thread protector ring and pure argon gas welding device

Abstract

The utility model discloses an oil well pipe thread protection ring and pure argon gas welding device relates to oil well pipe maintenance technical field, the utility model discloses a base, protection ring automatic fixed subassembly and welding smoke removal subassembly are connected with the welding mechanism in the front fixed connection of base, the top of base is swinged in the front and rear and is connected with the rotating roller, protection ring automatic fixed subassembly includes the limiting mechanism, and the top of limiting mechanism is fixedly connected with the bottom of base, the utility model discloses a protection ring automatic fixed subassembly, utilizes drive mechanism to drive rotating wheel rotation, and rotating wheel and protection ring body contact produce frictional force drive protection ring body rotates in the rotating ring, and the protection ring body is pushed, when its thread engagement with oil well pipe, makes it automatic with oil well pipe thread engagement fixed, need not manual repeated adjustment axial and circumferential position, greatly shortens the installation time, solves the problem that traditional protection ring operation is complicated.

Description

Technical Field

[0001] This utility model belongs to the field of oil well pipe repair technology, and in particular relates to an oil well pipe thread protection ring and a pure argon gas welding device. Background Technology

[0002] Oil well tubing is a key steel pipe component used in the petroleum industry for oil and gas well drilling, completion, and oil and gas transportation. Classified by purpose, casing is used to support the well wall and prevent formation fluids from flowing, tubing is responsible for transporting oil and gas from the bottom of the well to the surface, and drill pipe connects the drill bit and transmits drilling power. According to the manufacturing process, it can be divided into seamless pipe and welded pipe, and its performance is directly related to the safety and efficiency of oilfield production.

[0003] In oil well pipe welding repair operations, the high-temperature heat radiation, molten metal droplet splashes, and large amounts of harmful fumes generated in the welding area can easily cause thermal damage, slag adhesion, or corrosive contamination to the precision threads of adjacent pipe ends. Although traditional thread protection rings can provide physical isolation, they have obvious defects in actual installation. They lack a quick positioning structure, and operators need to repeatedly adjust the axial and circumferential positions of the protection ring and the thread to achieve precise coverage, which cannot be completed quickly. This results in workers spending a lot of time on oil well pipe repair operations. Secondly, the harmful fumes cannot be collected during the welding process, causing air pollution and corrosive contamination of the threads, which is detrimental to their use.

[0004] To address these issues, we provide an oil well pipe thread protection ring and a pure argon gas welding device. Utility Model Content

[0005] The purpose of this utility model is to provide a protective ring for oil well pipe threads and a pure argon gas welding device. By combining the automatic fixing component for the protective ring and the welding fume removal component, the existing technology solves the problems of cumbersome operation of installing the protective ring at the thread when welding and repairing oil well pipes and the lack of welding fume purification function.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0007] This utility model relates to a protective ring for oil well pipe threads and a pure argon gas welding device, comprising a base, an automatic protective ring fixing assembly, and a welding fume removal assembly. A welding mechanism is fixedly connected to the front side of the base. Rotating rollers are movably connected to both the front and rear sides of the top of the base. The automatic protective ring fixing assembly includes a limiting mechanism, the top of which is fixedly connected to the bottom of the base. A fixed seat is fixedly connected to the left side of the limiting mechanism, and a rotating ring is fixedly connected to the top of the fixed seat. The protective ring body is slidably connected to the inner wall of the rotating ring. A driving mechanism is fixedly connected to the right side of the fixed seat. The welding fume removal assembly includes a dust extraction hood, the bottom of which is fixedly connected to the base. A filter shell is fixedly connected to the rear side of the base. The top of the filter shell and the dust extraction hood are connected via a conduit. A baffle is provided on the front side of the filter shell, and a filter screen is fixedly connected to the rear side of the baffle. An exhaust fan is connected to the bottom of the filter shell.

[0008] The present invention is further configured such that the welding mechanism includes a guide rail, a support frame is slidably connected to the inner cavity of the guide rail, a fixing sleeve is fixedly connected to the front side of the support frame, a rotating ball is slidably connected to the inner cavity of the fixing sleeve, and a welding head is provided in the inner cavity of the rotating ball. The guide rail facilitates the left and right sliding of the support frame, and the fixing sleeve and rotating ball enable the welding head to move at multiple angles, enabling it to weld and repair broken parts on the surface of the oil well pipe. By providing stable support for the welding head, it prevents the worker's hand from shaking during the welding process, which could cause the welding head to deviate.

[0009] The present invention is further configured such that the limiting mechanism includes two sliding rods, the top of the sliding rods is fixedly connected to the base, the surface of the sliding rods is slidably connected to a sliding sleeve, a limiting frame is fixedly connected between the two sliding sleeves, the left side of the limiting frame is fixedly connected to the fixed seat, and the sliding rods and sliding sleeves can cooperate with the limiting frame to limit the fixed seat, so that it can be smoothly adjusted to the left and right positions.

[0010] The present invention is further configured such that the driving mechanism includes a motor, the left side of the motor is fixedly connected to the fixed base, the left side of the output end of the motor passes through the fixed base and is fixedly connected to a rotating wheel, the top of the rotating wheel passes through a rotating ring and fits against the protective ring body, the motor can control the rotating wheel to rotate, and the rotating wheel will control the protective ring body to rotate through friction during the rotation process, and the installation work can be automatically completed after the protective ring body is threadedly connected to the oil well pipe, without the need for the staff to manually fix the protective ring body.

[0011] The present invention is further configured such that a cleaning mechanism is fixedly connected to the top of the rear side of the baffle. The cleaning mechanism includes an electric cylinder, the front side of which is fixedly connected to the baffle. A mounting bracket is fixedly connected to the left side of the output end of the electric cylinder. Scrapers are fixedly connected to both sides of the bottom of the mounting bracket. The cleaning mechanism can clean the top of the filter screen to prevent it from becoming clogged. The electric cylinder is used to control the position of the mounting bracket and the scraper. The scraper cleans the top of the filter screen during its movement.

[0012] The present invention is further configured such that handles are fixedly connected to both sides of the front side of the baffle, and slide rails for cooperating with the filter screen are fixedly connected to both sides of the inner cavity of the filter shell. The handles make it easy for the staff to open the baffle and pull out the filter screen, so as to facilitate the staff to centrally process the impurities and dust filtered by the filter screen. The slide rails can limit the position of the filter screen.

[0013] The present invention is further configured such that mounting plates are fixedly connected to the front and rear sides of the bottom of both sides of the base, and mounting holes are provided on the top of the mounting plates. The mounting plates and mounting holes can stably install the base in the designated position and prevent it from shifting during use.

[0014] The present invention has the following beneficial effects.

[0015] 1. This utility model uses an automatic protective ring fixing component. The drive mechanism drives the rotating wheel to rotate. The rotating wheel contacts the protective ring body and generates friction to drive the protective ring body to rotate inside the rotating ring. When the protective ring body engages with the thread of the oil well pipe, it automatically engages and fixes with the thread of the oil well pipe. There is no need for manual repeated adjustment of the axial and circumferential positions, which greatly shortens the installation time and solves the problem of cumbersome operation of traditional protective rings.

[0016] 2. This utility model utilizes a welding fume extraction component. During welding, a dust collection hood collects high-temperature fumes, which are then guided into a filter housing via a conduit. Harmful particles are intercepted by the filter screen, and an exhaust fan accelerates the airflow to expel purified gas, preventing fumes from corroding threads or polluting the environment. A cleaning mechanism located behind the baffle uses an electric cylinder to control a scraper to reciprocate and remove impurities from the filter screen surface to prevent clogging. By filtering and purifying the welding fumes, this invention prevents them from polluting the surrounding air and oil well pipe threads, thus improving the protection of oil well pipe threads. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0018] Figure 1 A perspective view of an oil well pipe thread protection ring and a pure argon gas welding device; Figure 2 A side view of an oil well pipe thread protection ring and a pure argon gas welding device; Figure 3 A schematic diagram of the drive mechanism in an oil well pipe thread protection ring and a pure argon gas welding device; Figure 4 A cross-sectional view of a protective ring for oil well pipe threads and a welding mechanism in a pure argon gas welding device; Figure 5 This is an exploded view of a protective ring for oil well pipe threads and a welding smoke removal component in a pure argon gas welding device.

[0019] In the attached diagram: 1. Base; 2. Welding mechanism; 3. Rotating roller; 4. Automatic fixing assembly for protective ring; 41. Limiting mechanism; 42. Fixed seat; 43. Rotating ring; 44. Protective ring body; 45. Drive mechanism; 5. Welding smoke removal assembly; 51. Dust hood; 52. Filter shell; 53. Baffle; 54. Filter screen; 55. Exhaust fan; 21. Guide rail; 22. Support frame; 23. Fixing sleeve; 24. Rotating ball; 25. Welding head; 411. Sliding rod; 412. Sliding sleeve; 413. Limiting frame; 451. Motor; 452. Rotating wheel; 6. Cleaning mechanism. Detailed Implementation

[0020] The technical solutions of the present invention will be described below with reference to the accompanying drawings of the embodiments of the present invention. The described embodiments are only some embodiments of the present invention, and not all embodiments.

[0021] Example 1

[0022] Please see Figure 1-5 This utility model relates to a protective ring for oil well pipe threads and a pure argon gas welding device, comprising a base 1, an automatic protective ring fixing assembly 4, and a welding fume removal assembly 5. A welding mechanism 2 is fixedly connected to the front side of the base 1, and rotating rollers 3 are movably connected to the front and rear sides of the top of the base 1. The automatic protective ring fixing assembly 4 includes a limiting mechanism 41, the top of which is fixedly connected to the bottom of the base 1. A fixing seat 42 is fixedly connected to the left side of the limiting mechanism 41, and a rotating ring is fixedly connected to the top of the fixing seat 42. 43. A protective ring body 44 is slidably connected to the inner wall of the rotating ring 43. A drive mechanism 45 is fixedly connected to the right side of the fixed base 42. The welding smoke removal assembly 5 includes a dust collection hood 51. The bottom of the dust collection hood 51 is fixedly connected to the base 1. A filter shell 52 is fixedly connected to the rear side of the base 1. The top of the filter shell 52 and the dust collection hood 51 are connected through a conduit. A baffle 53 is provided on the front side of the filter shell 52. A filter screen 54 is fixedly connected to the rear side of the baffle 53. An exhaust fan 55 is connected to the bottom of the filter shell 52.

[0023] Specifically: Welding mechanism 2 can weld and maintain the damaged or cracked parts of the oil well pipe; rotating roller 3 can cooperate with base 1 to limit the oil well pipe, allowing it to rotate on top of base 1, making it easy to rotate the damaged position directly below welding head 25; limiting mechanism 41 can limit fixed seat 42 and protective ring body 44, allowing them to move smoothly left and right; rotating ring 43 can limit protective ring body 44; driving mechanism 45 can control the rotation of protective ring body 44; when its internal thread engages with the thread on the surface of the oil well pipe, it can automatically control the protective ring body 44 to shield and protect the thread of the oil well pipe, eliminating the need for manual installation of the protective ring body 44; dust hood 51 can draw welding fumes into filter shell 52; filter screen 54 is used to filter the fumes; baffle 53 facilitates the installation and fixation of filter screen 54; exhaust fan 55 can draw fumes into dust hood 51.

[0024] Example 2

[0025] Please see Figure 1-5 Based on Embodiment 1, the welding mechanism 2 includes a guide rail 21, a support frame 22 slidably connected to the inner cavity of the guide rail 21, a fixed sleeve 23 fixedly connected to the front side of the support frame 22, a rotating ball 24 slidably connected to the inner cavity of the fixed sleeve 23, and a welding head 25 disposed in the inner cavity of the rotating ball 24. The limiting mechanism 41 includes two sliding rods 411, the top of the sliding rods 411 fixedly connected to the base 1, a sliding sleeve 412 slidably connected to the surface of the sliding rods 411, a limiting frame 413 fixedly connected between the two sliding sleeves 412, and the left side of the limiting frame 413 fixedly connected to the fixed seat 42. The driving mechanism 45 includes a motor 451, the left side of the motor 451 fixedly connected to the fixed seat 42. A rotating wheel 452 is fixedly connected to the left side of the output end of the machine 451 through the fixed base 42. The top of the rotating wheel 452 passes through the rotating ring 43 and fits against the protective ring body 44. A cleaning mechanism 6 is fixedly connected to the top of the rear side of the baffle 53. The cleaning mechanism 6 includes an electric cylinder. The front side of the electric cylinder is fixedly connected to the baffle 53. A mounting bracket is fixedly connected to the left side of the output end of the electric cylinder. Scrapers are fixedly connected to both sides of the bottom of the mounting bracket. Handles are fixedly connected to both sides of the front side of the baffle 53. Slide rails that cooperate with the filter screen 54 are fixedly connected to both sides of the inner cavity of the filter shell 52. Mounting plates are fixedly connected to the front and rear sides of the bottom of both sides of the base 1. Mounting holes are opened on the top of the mounting plates.

[0026] Specifically: the guide rail 21 facilitates the left and right sliding of the support frame 22; the fixed sleeve 23 and the rotating ball 24 enable the welding head 25 to move at multiple angles, allowing it to weld and repair broken areas on the surface of the oil well pipe. By providing stable support for the welding head 25, it prevents hand slippage during welding, thus preventing the welding head 25 from shifting. The sliding rod 411 and sliding sleeve 412 cooperate with the limiting frame 413 to limit the fixed seat 42, allowing for smooth left and right position adjustment. The motor 451 controls the rotation of the rotating wheel 452, which, during rotation, controls the rotation of the protective ring body 44 through friction. Once the protective ring body 44 is threadedly connected to the oil well pipe, the installation can be completed automatically without the need for manual fixing. The cleaning mechanism 6 can clean the top of the filter screen 54 to prevent clogging. The electric cylinder is used to control the position of the mounting bracket and the scraper. The scraper cleans the top of the filter screen 54 during movement. The handle allows the operator to open the baffle 53 and pull out the filter screen 54, facilitating the centralized treatment of impurities and dust filtered by the filter screen 54. The slide rail can limit the position of the filter screen 54. The mounting plate and mounting holes can stably install the base 1 in the designated position to prevent displacement during use.

[0027] The working principle of this utility model is as follows: The oil well pipe to be repaired is placed on the rotating roller 3 at the top of the base 1. The position of the welding mechanism 2 is adjusted so that it is aligned with the damaged part of the oil well pipe. Then, the motor 451 is started to drive the rotating wheel 452 to rotate. The rotating wheel 452 causes the protective ring body 44 to rotate inside the rotating ring 43 due to friction, pushing the protective ring body 44 to the thread of the oil well pipe. The protective ring body 44 automatically screws into the thread end of the oil well pipe to complete the coverage. At the same time, the sliding rod 411 and the sliding sleeve 412 work together with the limiting frame 413 to fix the fixing seat 42, ensuring that the movement trajectory of the protective ring body 44 is accurate. During the welding process... The welding head 25 performs argon-protected welding on the damaged area. At the same time, the exhaust fan 55 is started, generating negative pressure to draw the welding fumes into the duct through the dust suction hood 51. After the fumes enter the filter shell 52, they are filtered by the filter screen 54. Clean gas is discharged from the bottom. When dust accumulates on the filter screen 54, the cleaning mechanism 6 scrapes off the dust on the surface of the filter screen 54, enabling it to perform filtering work for a long time. Periodically pulling the handle on the front side of the baffle 53 allows the filter screen 54 to be pulled out along the slide rail to clean the dust and impurities. By filtering and purifying the welding fumes, it is prevented from polluting the surrounding air and oil well pipe threads, thus improving the protection effect on the oil well pipe threads.

[0028] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific implementation methods described. The present specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the art can better understand and utilize the present utility model.

Claims

1. A protective ring for oil well pipe threads and a pure argon gas welding device, comprising a base (1), an automatic fixing assembly for the protective ring (4), and a welding fume removal assembly (5), characterized in that: A welding mechanism (2) is fixedly connected to the front side of the base (1), and a rotating roller (3) is movably connected to the front and rear sides of the top of the base (1). The automatic fixing assembly (4) for the protective ring includes a limiting mechanism (41). The top of the limiting mechanism (41) is fixedly connected to the bottom of the base (1). A fixing seat (42) is fixedly connected to the left side of the limiting mechanism (41). A rotating ring (43) is fixedly connected to the top of the fixing seat (42). A protective ring body (44) is slidably connected to the inner wall of the rotating ring (43). A driving mechanism (45) is fixedly connected to the right side of the fixing seat (42). The welding smoke removal assembly (5) includes a dust collection hood (51), the bottom of which is fixedly connected to the base (1), and a filter shell (52) is fixedly connected to the rear side of the base (1). The top of the filter shell (52) and the dust collection hood (51) are connected through a conduit. A baffle (53) is provided on the front side of the filter shell (52), and a filter screen (54) is fixedly connected to the rear side of the baffle (53). An exhaust fan (55) is connected to the bottom of the filter shell (52).

2. An apparatus for protecting threads of an oil well pipe and for pure argon gas welding according to claim 1, characterized in that: The welding mechanism (2) includes a guide rail (21), a support frame (22) is slidably connected to the inner cavity of the guide rail (21), a fixed sleeve (23) is fixedly connected to the front side of the support frame (22), a rotating ball (24) is slidably connected to the inner cavity of the fixed sleeve (23), and a welding head (25) is provided in the inner cavity of the rotating ball (24).

3. An apparatus for protecting threads of an oil well pipe and for pure argon gas welding according to claim 1, characterized in that: The limiting mechanism (41) includes two slide rods (411), the top of the slide rods (411) is fixedly connected to the base (1), and the surface of the slide rods (411) is slidably connected to the slide sleeves (412). A limiting frame (413) is fixedly connected between the two slide sleeves (412), and the left side of the limiting frame (413) is fixedly connected to the fixed seat (42).

4. An apparatus for protecting threads of an oil well pipe and for pure argon gas welding according to claim 1, characterized in that: The drive mechanism (45) includes a motor (451), the left side of which is fixedly connected to the fixed seat (42). The left side of the output end of the motor (451) passes through the fixed seat (42) and is fixedly connected to a rotating wheel (452). The top of the rotating wheel (452) passes through a rotating ring (43) and is in contact with the protective ring body (44).

5. An apparatus for protecting threads of an oil well pipe and for pure argon gas welding according to claim 1, characterized in that: A cleaning mechanism (6) is fixedly connected to the top of the rear side of the baffle (53). The cleaning mechanism (6) includes an electric cylinder. The front side of the electric cylinder is fixedly connected to the baffle (53). A mounting bracket is fixedly connected to the left side of the output end of the electric cylinder. Scrapers are fixedly connected to both sides of the bottom of the mounting bracket.

6. An oil country tubular good threaded protector ring and pure argon gas welding apparatus as claimed in claim 1, wherein: Handles are fixedly connected to both sides of the front side of the baffle (53), and slide rails that cooperate with the filter screen (54) are fixedly connected to both sides of the inner cavity of the filter shell (52).

7. An apparatus for protecting threads of an oil well pipe and for pure argon gas welding according to claim 1, characterized in that: Mounting plates are fixedly connected to the front and rear sides of the bottom of both sides of the base (1), and mounting holes are provided on the top of the mounting plates.

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