An automatic descaling and cleaning device for high-pressure water injection pipelines in oil fields

Abstract

This utility model discloses an automatic descaling and cleaning device for high-pressure water injection pipelines in oilfields. It includes a central pipe with an end plate fixed to one end. An air bladder is fixed to the surface of the end plate and communicates with the interior of the central pipe. Multiple support components are fixed to the outer wall of the central pipe near the air bladder. A sleeve is rotatably connected to the surface of the central pipe away from the end plate via a bearing. In this utility model, a central pipe, end plate, air bladder, support components, sleeve, cleaning components, and a drive component are provided. Inflating the central pipe with a valve causes the air bladder to swell and fit tightly against the inner wall of the water pipe. Simultaneously, the support components are also expanded to contact the inner wall of the water pipe. Water is then injected into the water pipe, and the water pressure pushes the air bladder to move within the pipe, thereby moving the device within the pipe. During this movement, the cleaning components clean the inner wall of the water pipe, thus improving the cleaning effect.

Description

Technical Field

[0001] This utility model relates to the field of descaling technology for oilfield water injection pipelines, and in particular to an automatic descaling and cleaning device for high-pressure water injection pipelines in oilfields. Background Technology

[0002] The water injection network is a crucial link in the oilfield production system for maintaining formation pressure, responsible for reinjecting treated oily wastewater underground. However, the reinjected wastewater has a complex composition, containing residual crude oil, suspended solids, dissolved salts, and microorganisms. These substances continuously deposit on the inner wall of the pipeline, gradually forming a dense composite scale layer, mainly composed of carbonates, sulfates, corrosion products, and organic matter. Scale formation not only significantly reduces pipeline flow efficiency but also causes serious secondary pollution—scale peeling can carry pollutants back into the water injection system, while uneven scale formation can induce localized electrochemical corrosion, accelerating pipe wall perforation.

[0003] A search revealed that patent CN220879801U discloses a descaling device for oilfield water injection pipelines. This device, with its descaling pipe, primary baffle, primary filter plate, secondary baffle, secondary motor, gears, guide plate, and rack, facilitates the filtration of scale, ensures sufficient flushing force, and improves descaling effectiveness. However, this device still has drawbacks. When flushing the inner wall of the water pipe, the friction between the water and the pipe wall is low, making it impossible to completely remove stubborn scale from the pipe wall using only flushing, resulting in poor cleaning performance. Therefore, further improvements are needed. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and propose an automatic descaling and cleaning device for high-pressure water injection pipelines in oil fields.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an automatic descaling and cleaning device for high-pressure water injection pipelines in oil fields, comprising a central pipe, an end plate fixed to one end of the central pipe, an air bladder fixed to the surface of the end plate, the air bladder being connected to the interior of the central pipe, multiple support components fixed to the outer wall of the central pipe near the air bladder, a sleeve rotatably connected to the surface of the central pipe away from the end plate via a bearing, multiple cleaning components fixed to the outer wall of the sleeve, and a drive component for driving the sleeve to rotate installed on the outer wall of the central pipe near the sleeve.

[0006] Furthermore, the airbag has an air hole on the side near the central tube, and the air hole is connected to the central tube.

[0007] Furthermore, an air valve is fixedly installed at the end of the central tube away from the airbag.

[0008] Furthermore, the support assembly includes a side tube fixed to the outer wall of the central tube, and the side tube communicates with the interior of the central tube. A sliding sleeve is slidably fitted on the surface of the side tube, and a U-shaped plate is fixed to the other end of the sliding sleeve. A roller is rotatably connected inside the U-shaped plate.

[0009] Furthermore, a sealing ring is fixed to the outer wall of the side tube.

[0010] Furthermore, the cleaning assembly includes a side rod fixed to the outer wall of the sleeve, a sleeve slidably connected to the surface of the side rod, a brush fixedly connected to the other end of the sleeve, and a spring fixedly connected between the inner wall of the sleeve and the side rod.

[0011] Furthermore, an external gear ring is fixed to the outer wall of the sleeve, and the drive assembly includes a housing fixed to the outer wall of the central tube. A motor and a battery are installed inside the housing. The motor output shaft passes through the side wall of the housing and is fixed with a gear. The motor output shaft and the housing are rotatably connected by a sealed bearing. The gear meshes with the external gear ring, and the motor is electrically connected to the battery.

[0012] The beneficial effects of this utility model are:

[0013] In use, this utility model relates to an automatic descaling and cleaning device for high-pressure water injection pipelines in oilfields. It comprises a central pipe, end plates, an air bladder, a support assembly, a sleeve, a cleaning assembly, and a drive assembly. Inflation of the central pipe via a valve causes the air bladder to inflate and fit tightly against the inner wall of the water pipe. Simultaneously, the support assembly is also expanded to contact the inner wall of the water pipe. Water is then injected into the water pipe, and the water pressure propels the air bladder within the pipe, thereby moving the device. During this movement, the cleaning assembly cleans the inner wall of the water pipe, thus improving the cleaning effect. This device can clean water pipes of various sizes, enhancing its versatility. Attached Figure Description

[0014] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 : Overall perspective view of this utility model;

[0016] Figure 2 : A cross-sectional view of the present invention located inside a water pipe;

[0017] Figure 3 The present utility model Figure 2 Enlarged view of point A in the middle;

[0018] Figure 4 The present utility model Figure 2 Enlarged view of section B in the middle.

[0019] The attached figures are labeled as follows:

[0020] 1. Central tube; 2. End plate; 3. Airbag; 31. Air hole; 4. Support assembly; 41. Side tube; 42. Sliding sleeve; 43. U-shaped plate; 44. Roller; 5. Sleeve; 51. External toothed ring; 6. Cleaning assembly; 61. Side rod; 62. Sleeve; 63. Spring; 64. Brush; 7. Valve nozzle; 8. Drive assembly; 81. Housing; 82. Motor; 83. Gear; 84. Battery; 9. Water pipe. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figures 1-4 As shown, an automatic descaling and cleaning device for high-pressure water injection pipelines in oil fields is disclosed. The device includes a central pipe 1, an end plate 2 fixed to one end of the central pipe 1, an air bladder 3 fixed to the surface of the end plate 2, and the air bladder 3 communicating with the interior of the central pipe 1. Multiple support components 4 are fixed to the outer wall of the central pipe 1 near the air bladder 3. A sleeve 5 is rotatably connected to the surface of the central pipe 1 away from the end plate 2 via a bearing. Multiple cleaning components 6 are fixed to the outer wall of the sleeve 5. A drive component 8 for driving the sleeve 5 to rotate is installed on the outer wall of the central pipe 1 near the sleeve 5.

[0023] An air hole 31 is provided on the side of the airbag 3 near the central tube 1, and the air hole 31 is connected to the central tube 1.

[0024] In this embodiment, the airbag 3 is made of rubber. When air is inflated into the central tube 1, air will pass through the air hole 31 and enter the airbag 3, causing the airbag 3 to expand.

[0025] An air valve 7 is fixedly installed at the end of the central tube 1 away from the airbag 3.

[0026] In this embodiment, the valve 7 adopts the same structure as the valve on a car tire. By connecting the air pump to the valve 7, the central tube 1 and the airbag 3 can be inflated.

[0027] The support assembly 4 includes a side tube 41 fixed to the outer wall of the central tube 1, and the side tube 41 communicates with the interior of the central tube 1. A sliding sleeve 42 is slidably fitted on the surface of the side tube 41, and a U-shaped plate 43 is fixed to the other end of the sliding sleeve 42. A roller 44 is rotatably connected inside the U-shaped plate 43.

[0028] When air is inflated into the central tube 1, air will enter not only the airbag 3 but also the side tube 41 and the sliding sleeve 42, thereby pushing the sliding sleeve 42 to slide along the surface of the side tube 41 until the roller 44 is in contact with the inner wall of the water pipe 9, thus using the support assembly 4 to support the device.

[0029] A sealing ring is fixed to the outer wall of the side tube 41. The sealing ring can increase the sealing between the side tube 41 and the sliding sleeve 42, and prevent air from leaking along the gap between the side tube 41 and the sliding sleeve 42 during inflation.

[0030] The cleaning component 6 includes a side rod 61 fixed to the outer wall of the sleeve 5, a sleeve 62 slidably connected to the surface of the side rod 61, a brush 64 fixedly connected to the other end of the sleeve 62, and a spring 63 fixedly connected between the inner wall of the sleeve 62 and the side rod 61.

[0031] When the device is placed inside the water pipe 9, the spring 63 compresses and pushes the sleeve 62 to move away from the central pipe 1, causing the brush 64 to fit against the inside of the water pipe 9. As the device moves, the brush 64 can clean the inner wall of the water pipe 9. The brush 64 can be set in an arc shape so that it can fit better against the inner wall of the water pipe 9.

[0032] An external gear ring 51 is fixed to the outer wall of the sleeve 5. The drive assembly 8 includes a housing 81 fixed to the outer wall of the central tube 1. A motor 82 and a battery 84 are installed inside the housing 81. The output shaft of the motor 82 passes through the side wall of the housing 81 and is fixed with a gear 83. The output shaft of the motor 82 is rotatably connected to the housing 81 by a sealed bearing. The gear 83 meshes with the external gear ring 51. The motor 82 is electrically connected to the battery 84.

[0033] In this embodiment, a remote control switch is installed inside the outer casing 81, and a remote control is provided to match the remote control switch. The remote control switch controls the start and stop of the motor 82. The motor 82 drives the gear 83 to rotate, which in turn drives the external gear ring 51 to rotate, thereby driving the sleeve 5 to rotate. The cleaning component 6 on the surface of the sleeve 5 can then rotate synchronously with the sleeve 5, thus cleaning the inner wall of the sleeve 5. The battery 84 is a rechargeable battery, and the charging port is located on the surface of the outer casing 81 and is sealed with a waterproof cover. The waterproof cover can be opened to charge the battery during use.

[0034] Working principle: The device is placed into the water pipe 9 to be cleaned. Then, the air pump's inflation pipe is connected to the valve 7, and air is inflated into the central tube 1 and the air bladder 3. As the air bladder 3 inflates, the sliding sleeve 42 moves along the side tube 41 until the air bladder 3 and the roller 44 are in contact with the inner wall of the water pipe 9. At this time, the motor 82 is started to rotate the sleeve 5 and the cleaning component 6. Water is then injected into the water pipe 9, near the end of the air bladder 3. The water pressure pushes the air bladder 3 to move within the water pipe 9, thereby moving the device. In this way, the cleaning component 6 cleans the inside of the water pipe 9.

[0035] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An automatic descaling cleaning device for oilfield high-pressure water injection pipe network, comprising a central pipe (1), characterized in that: One end of the central tube (1) is fixed with an end plate (2), and an airbag (3) is fixed on the surface of the end plate (2). The airbag (3) is connected to the interior of the central tube (1). Multiple support components (4) are fixed on the outer side of the central tube (1) near the airbag (3). A sleeve (5) is rotatably connected to the surface of the central tube (1) away from the end plate (2) through a bearing. Multiple cleaning components (6) are fixed on the outer side of the sleeve (5). A drive component (8) for driving the sleeve (5) to rotate is installed on the outer side of the central tube (1) near the sleeve (5).

2. The automatic descaling and cleaning device for oilfield high-pressure water injection pipe network according to claim 1, characterized in that: The airbag (3) has an air hole (31) on the side near the central tube (1), and the air hole (31) is connected to the central tube (1).

3. The automatic descaling and cleaning device for oilfield high-pressure water injection pipe network according to claim 2, characterized in that: An air valve (7) is fixedly installed at the end of the central tube (1) away from the airbag (3).

4. The automatic descaling cleaning device for oilfield high-pressure water injection pipe network of claim 1, characterized in that: The support assembly (4) includes a side tube (41) fixed to the outer wall of the central tube (1), and the side tube (41) communicates with the interior of the central tube (1). A sliding sleeve (42) is slidably sleeved on the surface of the side tube (41), and a U-shaped plate (43) is fixed to the other end of the sliding sleeve (42). A roller (44) is rotatably connected inside the U-shaped plate (43).

5. The automatic descaling and cleaning device for oilfield high-pressure water injection pipe network according to claim 4, characterized in that: A sealing ring is fixed to the outer wall of the side tube (41).

6. The automatic descaling and cleaning device for high-pressure water injection pipelines in oilfields according to claim 1, characterized in that: The cleaning component (6) includes a side rod (61) fixed to the outer wall of the sleeve (5), a sleeve (62) slidably connected to the surface of the side rod (61), a brush (64) fixedly connected to the other end of the sleeve (62), and a spring (63) fixedly connected between the inner wall of the sleeve (62) and the side rod (61).

7. The automatic descaling cleaning device for oilfield high-pressure water injection pipe network according to claim 1, characterized in that: An external gear ring (51) is fixed to the outer wall of the sleeve (5). The drive assembly (8) includes a housing (81) fixed to the outer wall of the central tube (1). A motor (82) and a battery (84) are installed inside the housing (81). The output shaft of the motor (82) passes through the side wall of the housing (81) and is fixed with a gear (83). The output shaft of the motor (82) is rotatably connected to the housing (81) by a sealed bearing. The gear (83) meshes with the external gear ring (51). The motor (82) is electrically connected to the battery (84).

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