Pipeline inner wall rust removal device for natural gas storage and transportation

Abstract

The invention discloses a pipeline inner wall rust removal device for natural gas storage and transportation, and relates to the technical field of rust removal devices. Comprising a driving part, a rust removal part and a purging part, the driving part comprises a first driving piece and a middle shaft; the derusting part comprises a first derusting assembly and a second derusting assembly, the first derusting assembly is provided with a first brush head, the second derusting assembly is provided with a second brush head, and the purging part is fixedly connected to the middle shaft and arranged between the first derusting assembly and the first driving part at an interval. The device can solve the problems that manual pipeline interior rust removal operation is low in efficiency and poor in rust removal and cleaning effect, and huge potential safety hazards are caused by operation in a narrow space.

Description

Technical Field

[0001] This application relates to the field of rust removal equipment technology, and in particular to a rust removal device for the inner wall of a natural gas storage and utilization pipeline. Background Technology

[0002] Pipelines are crucial for transporting various media during natural gas storage and transportation. To ensure efficient and safe transport of natural gas, the inner walls of pipelines must be kept in good condition. However, over time, due to environmental factors and the characteristics of the media, corrosion can occur on the inner walls of pipelines. Corrosion not only reduces the service life of pipelines but may also affect the quality of the transported media, impacting production quality and posing safety hazards.

[0003] The patent application, CN 214110099 U, describes a rust removal device for natural gas pipeline installation. It includes a rust removal rod with a handle on its right side and an external connector at the right end of the handle. A cleaning pipe is located in the middle of the rust removal rod and connects to the external connector. A side water outlet pipe is located at the left end of the cleaning pipe. Four sets of central water outlet pipes are arranged at equal angles in the middle of the cleaning pipe. Several sets of rust removal frames are arranged at equal angles on the sides of the rust removal rod, and a rust removal brush is fixedly installed in the middle of each frame. The rust removal rod is inserted into the natural gas pipeline to be cleaned from left to right by holding the handle. Cleaning fluid is discharged through the cleaning pipe and the external connector, spraying onto the pipe wall to assist in rust removal. The cleaning fluid softens the surface rust and carries away rust debris as it flows out. Rotating the rust removal rod allows for rust removal through friction between the rust removal brush and the debris. However, manual rust removal is still required.

[0004] However, it was found that manual rust removal inside pipes is inefficient, has poor cleaning results, and poses significant safety hazards when operating in confined spaces.

[0005] Therefore, the above problems urgently need to be solved. Summary of the Invention

[0006] The purpose of this application is to provide a rust removal device for the inner wall of natural gas storage and utilization pipelines, so as to solve the problems of low efficiency, poor rust removal and cleaning effect, and huge safety hazards caused by manual rust removal operations inside pipelines, and the operation in a confined space.

[0007] To solve the above-mentioned technical problems, this application provides the following technical solution: This application provides a rust removal device for the inner wall of a natural gas storage and utilization pipeline, comprising: The drive unit includes a first drive member and a central shaft, with the first drive member connected to one end of the central shaft; The rust removal section includes a first rust removal component and a second rust removal component. The first rust removal component and the second rust removal component are connected at a distance from the central shaft, and the second rust removal component is further away from the first driving member than the first rust removal component. The first rust removal component is provided with a first brush head, and the second rust removal component is provided with a second brush head. The first rust removal component is also provided with a second driving member. The driving end of the second driving member is connected to the first brush head to drive the first brush head to rotate, and the axis of rotation is perpendicular to the central shaft. A purging unit is fixedly connected to the central shaft and spaced apart between the first rust removal component and the first driving component; The first driving component drives the central shaft to rotate, which in turn drives the first rust removal component, the second rust removal component, and the blowing unit to rotate. The blowing unit rotates to blow towards the first rust removal component.

[0008] Furthermore, in the aforementioned rust removal device for the inner wall of natural gas storage pipelines, the hardness of the second brush head is greater than that of the first brush head; and / or, The first rust removal component also includes a first support body and a first bracket. The first support body is annular, and multiple first brush heads are evenly spaced along the outer edge of the first support body. The first bracket is connected to the inner edge of the first support body and fixedly connected to the central shaft in the middle. The second rust removal component also includes a second support body and a second bracket. The second support body is annular, and multiple second brush heads are evenly spaced along the outer edge of the second support body. The second bracket is connected to the inner edge of the second support body and fixedly connected to the central shaft in the middle.

[0009] Furthermore, in the aforementioned rust removal device for the inner wall of a natural gas storage and utilization pipeline, a first annular support body has a first through hole corresponding to the first brush head, a first bracket has a first groove at one end corresponding to the first brush head and facing the inner edge of the first support body, and the first rust removal component also has a first telescopic component, which passes through the first through hole, and one end of the first telescopic component is elastically connected to the bottom of the first groove, and the other end of the first telescopic component is connected to the first brush head; a second annular support body has a second through hole corresponding to the second brush head, a second bracket has a second groove at one end corresponding to the second brush head and facing the inner edge of the second support body, and the second rust removal component also has a second telescopic component, which passes through the second through hole, and one end of the second telescopic component is elastically connected to the bottom of the second groove, and the other end of the second telescopic component is connected to the second brush head.

[0010] Furthermore, in the aforementioned natural gas storage pipeline inner wall rust removal device, the purging section includes multiple blades, which are evenly and alternately arranged along the outer edge of the central axis. The blades are bent toward the direction from the first rust removal component to the first driving component, and the thickness of the blades decreases along their length direction away from the central axis.

[0011] Furthermore, the aforementioned rust removal device for the inner wall of the natural gas storage and utilization pipeline has a guide section in the central axis, which is located between the purging section and the first rust removal component. The guide section has a spiral groove, and the depth of the spiral groove decreases along the direction from the purging section to the first rust removal component.

[0012] Furthermore, the aforementioned rust removal device for the inner wall of the natural gas storage and utilization pipeline also includes a cleaning section. The cleaning section is fixedly connected to the central shaft and is spaced apart on the side of the second rust removal component away from the first rust removal component. An outlet is provided on the outer edge of the cleaning section. The first driving component drives the central shaft to rotate, thereby causing the cleaning section to rotate. The outlet of the cleaning section discharges liquid as the central shaft rotates.

[0013] Furthermore, the cleaning unit includes a cleaning fluid storage tank, a compressor pump, and a distribution box. The two ends of the compressor pump are connected to the cleaning fluid storage tank and the distribution box, respectively. The distribution box is disc-shaped and mounted on the central shaft. Multiple distribution channels are opened inside the distribution box, and the ends of the distribution channels are connected to liquid outlets for spraying cleaning fluid under the action of the compressor pump.

[0014] Furthermore, the aforementioned rust removal device for the inner wall of a natural gas storage pipeline also includes a sliding part, which comprises a support member and a sliding assembly. The support member is fixedly connected to the periphery of the first driving member, and the sliding assembly is disposed at the end of the support member away from the first driving member.

[0015] Furthermore, in the aforementioned rust removal device for the inner wall of the natural gas storage pipeline, the sliding component includes a telescopic rod and a pulley. The two ends of the telescopic rod are respectively connected to a support and the pulley, and the telescopic rod drives the pulley to move closer to or away from the support.

[0016] Furthermore, the aforementioned rust removal device for the inner wall of a natural gas storage and utilization pipeline further includes: a barrier section, which is a circular plate sleeved on the central shaft and spaced between the first driving member and the purging section; the outer edge of the barrier section is elastic and its dimensions correspond to those of the driving member; and / or, The positioning unit is fixedly connected to the periphery of the first driving component and is used to collect position information.

[0017] Through the above technical solution, the rust removal device for the inner wall of natural gas storage and utilization pipelines of this application has at least the following advantages: This application achieves simultaneous operation of the three processes of cleaning, rust removal and blowing by driving the central shaft to rotate through the first driving component, realizing an integrated and optimized pipeline rust removal solution. It replaces manual labor, greatly improves the efficiency of rust removal on the inner wall of the pipeline, and avoids the safety hazards caused by manual operation in confined spaces. The cleaning section is located at the front end of the device and can prioritize cleaning and softening the rust on the inner wall of the pipeline, reducing the workload of the rust removal section and improving the cleaning effect.

[0018] In this application, a two-stage rust removal and cleaning process is formed by setting a first rust removal component and a second rust removal component. By setting the hardness of the second brush head to be greater than that of the first brush head, the second brush head with higher hardness can effectively remove stubborn rust and thick dirt in the first cleaning step, ensuring the quality of the initial cleaning. Meanwhile, the first brush head with lower hardness can more carefully handle residual small rust stains and uneven surfaces in the second cleaning step.

[0019] This application uses a second driving component connected to a first brush head to drive the first brush head to rotate along a rotation axis perpendicular to the central axis. While the first brush head is rotated by the central axis, it also rotates on its own under the action of the second driving component, so that the first brush head forms a spiral cleaning path on the inner wall of the pipe, thereby improving the rust removal effect under fine cleaning.

[0020] This application uses a purging section spaced between the first rust removal component and the first drive component. By blowing out airflow, the rust debris cleaned by the rust removal section is swept away from the inner wall of the pipeline in the direction of the device's movement, preventing the rust debris from rolling back and contaminating the cleaned area, thus improving the overall cleaning efficiency of the device. Furthermore, the air blown out by the purging section passes through a guide section with a spiral groove on the central shaft, which can form a spiral airflow. During the rotation of the spiral airflow, centrifugal force is generated, which accelerates the airflow and pushes it towards the inner wall of the pipeline, improving the purging effect and thus ensuring the efficient, safe, and reliable operation of natural gas storage and transportation.

[0021] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, the preferred embodiments of this application are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 The schematic diagram illustrates the structure of a rust removal device for the inner wall of a natural gas storage and utilization pipeline provided in an embodiment of this application; Figure 2 The diagram illustrates the structure of the first rust removal component of a rust removal device for the inner wall of a natural gas storage and utilization pipeline provided in an embodiment of this application. Figure 3 The diagram illustrates the structure of the second rust removal component of a rust removal device for the inner wall of a natural gas storage and utilization pipeline provided in an embodiment of this application. Figure 4The diagram schematically illustrates a partial cross-sectional view of the guide section of the central axis of a rust removal device for the inner wall of a natural gas storage and utilization pipeline provided in an embodiment of this application. Figure 5 A schematic diagram of another rust removal device for the inner wall of a natural gas storage and utilization pipeline provided in an embodiment of this application is shown.

[0024] Explanation of icon numbers 1. Drive unit; 11. First drive component; 12. Central shaft; 121. Guide section; 1211. Spiral groove; 2. Rust removal section; 21. First rust removal component; 22. Second rust removal component; 211. First brush head; 212. First support body; 213. First bracket; 214. First telescopic component; 221. Second brush head; 222. Second support body; 223. Second bracket; 224. Second telescopic component; 2121. First through hole; 2131. First groove; 2221. Second through hole; 2231. Second groove; 3. Purging section; 31. Blades; 4. Cleaning section; 41. Cleaning fluid storage tank; 42. Compression pump; 43. Flow box; 44. Liquid outlet; 431. Flow channel; 5. Sliding part; 51. Support component; 52. Sliding assembly; 521. Telescopic rod; 522. Pulley; 6. Barrier section. Detailed Implementation

[0025] The embodiments of this disclosure will be further described in detail below with reference to the accompanying drawings and examples. The detailed description of the embodiments and the accompanying drawings are used to illustrate the principles of this disclosure by way of example, but should not be used to limit the scope of this disclosure. This disclosure can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0026] These embodiments are provided to make the disclosure thorough and complete, and to fully express the scope of the disclosure to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, material composition, numerical expressions, and values ​​set forth in these embodiments should be interpreted as exemplary only and not as limiting.

[0027] It should be noted that, in the description of this disclosure, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientation or positional relationship, are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0028] Furthermore, the terms "first," "second," and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. "Vertical" is not strictly vertical, but within the permissible margin of error. "Parallel" is not strictly parallel, but within the permissible margin of error. Terms such as "including" or "contains" mean that the element preceding the word encompasses the element listed after the word, and do not exclude the possibility of encompassing other elements as well.

[0029] It should also be noted that, in the description of this disclosure, unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this disclosure depending on the specific circumstances. When a particular device is described as being located between a first device and a second device, an intermediary device may or may not be present between the particular device and the first or second device.

[0030] All terms used in this disclosure have the same meaning as understood by one of ordinary skill in the art to which this disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and not as idealized or highly formalized, unless expressly defined herein.

[0031] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0032] This application provides a rust removal device for the inner wall of a natural gas storage and utilization pipeline, including a drive unit 1, a rust removal unit 2, and a purging unit 3. The drive unit 1 includes a first drive member 11 and a central shaft 12, with the first drive member 11 connected to one end of the central shaft 12. The rust removal unit 2 includes a first rust removal component 21 and a second rust removal component 22, which are spaced apart from the central shaft 12, with the second rust removal component 22 being further away from the first drive member 11 than the first rust removal component 21. The first rust removal component 21 is provided with a first brush head 211, and the second rust removal component 22 is provided with a second brush head 221. The second brush head 221 has a higher hardness than the first brush head 211. The first rust removal assembly 21 is also provided with a second driving member (not shown in the figure). The driving end of the second driving member is connected to the first brush head 211. The second driving member drives the first brush head 211 to rotate and the axis of rotation is perpendicular to the central axis 12. The blowing part 3 is fixedly connected to the central axis 12 and is spaced between the first rust removal assembly 21 and the first driving member 11. The first driving member 11 drives the central axis 12 to rotate, which in turn drives the first rust removal assembly 21, the second rust removal assembly 22, and the blowing part 3 to rotate. The blowing part 3 rotates to blow towards the first rust removal assembly 21.

[0033] This application provides drive through the first driving component 11, which drives the first rust removal component 21, the second rust removal component 22, and the blowing unit 3 to rotate, realizing the synchronous operation of the rust removal unit 2 and the blowing unit 3, achieving an integrated and optimized pipeline rust removal solution, replacing manual labor and greatly improving the rust removal efficiency of the pipeline inner wall. The rust removal unit 2 is equipped with the first rust removal component 21 and the second rust removal component 22 to form a two-stage rust removal and cleaning step. The blowing unit 3 is spaced between the first rust removal component 21 and the first driving component 11, and blows the rust debris cleaned by the rust removal unit 2 towards the direction of the device's movement by blowing out airflow, avoiding the rust debris from rolling back and contaminating the cleaned area, and improving the overall cleaning efficiency of the device.

[0034] like Figure 1As shown, an embodiment of this application provides a rust removal device for the inner wall of a natural gas storage and utilization pipeline, including a drive unit 1, a rust removal unit 2, a purging unit 3, and a cleaning unit 4. The drive unit 1 includes a first drive member 11 and a central shaft 12, with the first drive member 11 connected to one end of the central shaft 12. The rust removal unit 2 includes a first rust removal assembly 21 and a second rust removal assembly 22, which are spaced apart from the central shaft 12, with the second rust removal assembly 22 being further away from the first drive member 11 than the first rust removal assembly 21. The first rust removal assembly 21 is provided with a first brush head 211, and the second rust removal assembly 22 is provided with a second brush head 221. The hardness of the second brush head 221 is greater than that of the first brush head 211. The first rust removal assembly 21 is also provided with a second drive member (not shown in the figure), the drive end of which is connected to the first brush head 211. The second driving member drives the first brush head 211 to rotate with the rotation axis perpendicular to the central shaft 12; the blowing part 3 is fixedly connected to the central shaft 12 and is spaced between the first rust removal component 21 and the first driving member 11; the cleaning part 4 is fixedly connected to the central shaft 12 and is spaced between the second rust removal component 22 on the side away from the first rust removal component 21, and the outer edge of the cleaning part 4 is provided with a liquid outlet 44; wherein, the central shaft 12 has a guide section 121, the guide section 121 is located between the blowing part 3 and the first rust removal component 21, the guide section 121 has a spiral groove 1211, the first driving member 11 drives the central shaft 12 to rotate, thereby driving the cleaning part 4, the first rust removal component 21, the second rust removal component 22 and the blowing part 3 to rotate, the liquid outlet 44 of the cleaning part 4 discharges liquid as the central shaft 12 rotates, and the blowing part 3 rotates to blow towards the first rust removal component 21.

[0035] Specifically, this application provides drive through the first driving component 11, which drives the cleaning section 4, the first rust removal component 21, the second rust removal component 22, and the blowing section 3 to rotate, realizing the synchronous operation of the three processes of the cleaning section 4, the rust removal section 2, and the blowing section 3, achieving an integrated and optimized pipeline rust removal solution. This greatly improves the efficiency of rust removal on the inner wall of the pipeline by replacing manual labor. The cleaning section 4 is located at the front end of the device and can prioritize cleaning and softening the rust on the inner wall of the pipeline, reducing the workload of the rust removal section 2 and improving the cleaning effect. The rust removal section 2 is equipped with the first rust removal component 21 and the second rust removal component 22 to form a two-stage rust removal and cleaning step. The blowing section 3 is spaced between the first rust removal component 21 and the first driving component 11. By blowing out airflow, it blows the rust debris cleaned by the rust removal section 2 onto the inner wall of the pipeline in the direction of the device's movement, avoiding the rust debris from rolling back and contaminating the cleaned area, thus improving the overall cleaning efficiency of the device.

[0036] The first driving component 11 drives the central shaft 12, which can be in the form of a DC motor, hydraulic motor, etc., and is not limited in any specific way. It can drive the cleaning part 4, the first rust removal component 21, the second rust removal component 22 and the blowing part 3 to rotate so as to remove rust from the inner wall of the pipe.

[0037] The rust removal unit 2, by providing a first rust removal component 21 and a second rust removal component 22, forms a two-stage rust removal and cleaning process. Furthermore, by setting the hardness of the second brush head 221 to be greater than that of the first brush head 211, the harder second brush head 221, as the first cleaning step, can preferentially and effectively remove stubborn rust and thick layers of dirt, ensuring the quality of the initial cleaning. Meanwhile, the softer first brush head 211, as the second cleaning step, can more meticulously handle residual fine rust stains and uneven surfaces. In some embodiments, the harder second brush head 221 can be a wire brush, stainless steel brush, tungsten carbide wire brush, etc., while the softer first brush head 211 can be a nylon brush, polyurethane brush, natural fiber brush, etc., with no specific limitation.

[0038] Depending on the actual rust removal needs, more rust removal components can be set to form a multi-stage rust removal and cleaning process, with no specific limitations. Furthermore, the hardness of the brush heads of multiple rust removal components can be set to decrease progressively or in stages. For example, when there are four rust removal components, the hardness of the first to fourth brush heads can be gradually reduced, or the first two brush heads can have a hardness of the first value, and the last two brush heads can have a hardness of the second value, making the first hardness value greater than the second hardness value. In embodiments with other numbers of rust removal components, the settings can be implemented according to the above logic, and will not be elaborated further here.

[0039] The first brush head 211 is also connected to a second driving component to drive the first brush head 211 to rotate along a rotation axis perpendicular to the central shaft 12. This allows the first brush head 211 to rotate simultaneously with the central shaft 12 and under the action of the second driving component, creating a spiral cleaning path on the inner wall of the pipe. This improves the rust removal effect during fine cleaning. The second driving component can be a DC motor, hydraulic motor, or any other type, as long as it can drive the first brush head 211 to rotate. Alternatively, this application can provide a third driving component for the second brush head 221 to drive the third brush head to rotate along a rotation axis perpendicular to the central shaft 12, thereby improving the quality of the initial cleaning.

[0040] The blowing unit 3 in this application generates airflow due to its rotation, which blows air towards the first rust removal component 21. This promptly removes rust debris brushed off by the first brush head 211 and the second brush head 221 from the rust-removed area of ​​the pipe, preventing rust debris from accumulating on the cleaned pipe wall and reducing the risk of secondary contamination. Simultaneously, the blowing unit 3's airflow towards the first rust removal component 21 helps maintain the cleanliness of the first brush head 211 and the second brush head 221, extending their service life and ensuring effective rust removal. The blowing unit 3 can be a fan-blade structure, with no restrictions on the material, size, or number of blades, as long as sufficient airflow is provided to blow out the rust debris. Deflectors or other structures can also be installed in front of or behind the fan-blade structure of the blowing unit 3 to control the airflow direction and improve the cleaning effect on rust debris.

[0041] To further improve the purging effect of the purging section 3, this application has a guide section 121 in the central shaft 12. The guide section 121 is located between the purging section 3 and the first rust removal component 21. The guide section 121 has a spiral groove 1211 so that the air blown out by the purging section 3 can form a spiral airflow by passing through the guide section 121 with the spiral groove 1211 in the central shaft 12. The spiral airflow will generate centrifugal force during rotation, which will accelerate the airflow and push it towards the inner wall of the pipe, thereby improving the purging effect.

[0042] This application incorporates a cleaning section 4 into the rust removal device for the inner wall of natural gas storage and utilization pipelines. Cleaning fluid is sprayed onto the inner wall of the pipeline through the outlet 44, softening stubborn rust before the brush head contacts the pipeline wall for rust removal, thus improving cleaning efficiency and effectiveness. Simultaneously, it protects the rust removal section 2, extending its service life. The cleaning section 4 can be a ring spray structure, a spiral spray structure, a pulse spray structure, etc., with no specific limitation, as long as it can spray cleaning fluid onto the inner wall of the pipeline through the outlet 44. This application achieves simultaneous operation of the cleaning section 4, the rust removal section 2, and the purging section 3 by driving the central shaft 12 to rotate via the first driving component 11, realizing an integrated and optimized pipeline rust removal solution that significantly improves the efficiency of rust removal from the inner wall of the pipeline, replacing manual labor.

[0043] This application provides a rust removal device for the inner wall of a natural gas storage and utilization pipeline, comprising a drive unit 1, a rust removal unit 2, a purging unit 3, and a cleaning unit 4. The drive unit 1 includes a first drive component 11 and a central shaft 12, with the first drive component 11 connected to one end of the central shaft 12. The rust removal unit 2 includes a first rust removal assembly 21 and a second rust removal assembly 22, which are spaced apart from the central shaft 12, with the second rust removal assembly 22 being further away from the first drive component 11 than the first rust removal assembly 21. The first rust removal assembly 21 is provided with a first brush head 211, and the second rust removal assembly 22 is provided with a second brush head 221. The hardness of the second brush head 221 is greater than that of the first brush head 211. The first rust removal assembly 21 is also provided with a second drive component 4. The first rust removal component 21 and the second rust removal component 22 are connected to the first brush head 211. The second drive component drives the first brush head 211 to rotate, and the rotation axis is perpendicular to the central shaft 12. The blowing part 3 is fixedly connected to the central shaft 12 and is spaced between the first rust removal component 21 and the first drive component 11. The cleaning part 4 is fixedly connected to the central shaft 12 and is spaced between the second rust removal component 22 and the side away from the first rust removal component 21. The outer edge of the cleaning part 4 is provided with a liquid outlet 44. The first drive component 11 drives the central shaft 12 to rotate, which drives the cleaning part 4, the first rust removal component 21, the second rust removal component 22 and the blowing part 3 to rotate. The liquid outlet 44 of the cleaning part 4 discharges liquid as the central shaft 12 rotates. The blowing part 3 rotates to blow towards the first rust removal component 21.This application achieves simultaneous operation of the three processes—cleaning section 4, rust removal section 2, and blowing section 3—by driving the central shaft 12 to rotate using the first driving component 11. This integrated and optimized pipeline rust removal solution replaces manual labor, greatly improving the efficiency of rust removal on the inner wall of the pipeline and avoiding the safety hazards associated with manual operation in confined spaces. The cleaning section 4, located at the front end of the device, prioritizes cleaning and softening rust on the inner wall of the pipeline, reducing the workload of the rust removal section 2 while improving the cleaning effect. The rust removal section 2, by setting a first rust removal component 21 and a second rust removal component 22, forms a two-stage rust removal and brushing step. Furthermore, by setting the hardness of the second brush head 221 to be greater than that of the first brush head 211, the higher-hardness second brush head 221, as the first-stage brushing step, can effectively remove stubborn rust and thick layers of dirt, ensuring the quality of the initial cleaning. Meanwhile, the lower-hardness first brush head 211, as the second-stage brushing step, can more meticulously handle residual fine rust stains and uneven surfaces. The first brush head 211 is also connected to a second driving component to drive the first brush head 211 to rotate along a rotation axis perpendicular to the central axis 12. This causes the first brush head 211 to rotate while being driven by the central axis 12, and simultaneously rotate under the action of the second driving component. This creates a spiral cleaning path on the inner wall of the pipe, improving the rust removal effect under meticulous cleaning. The blowing section 3 is spaced between the first rust removal component 21 and the first driving component 11. By blowing out airflow, it sweeps the rust debris cleaned by the rust removal section 2 from the inner wall of the pipe towards the direction of the device's movement, preventing rust debris from rolling back and contaminating the cleaned area, thus improving the overall cleaning efficiency of the device. Furthermore, the air blown out by the blowing section 3 passes through the guide section 121 of the central axis 12, which has a spiral groove 1211, forming a spiral airflow. During rotation, the spiral airflow generates centrifugal force, accelerating the airflow towards the inner wall of the pipe, improving the blowing effect, and thus ensuring the efficient, safe, and reliable operation of natural gas storage and transportation. The application of this application solves the problems of low efficiency, poor rust removal and cleaning effect, and huge safety hazards caused by manual rust removal in confined spaces.

[0044] like Figure 2 and Figure 3 As shown, in some embodiments, the first rust removal component 21 is further provided with a first support body 212 and a first bracket 213. The first support body 212 is annular, and multiple first brush heads 211 are evenly spaced along the outer edge of the first support body 212. The first bracket 213 is connected to the inner edge of the first support body 212 and fixedly connected to the central shaft 12 in the middle. The second rust removal component 22 is further provided with a second support body 222 and a second bracket 223. The second support body 222 is annular, and multiple second brush heads 221 are evenly spaced along the outer edge of the second support body 222. The second bracket 223 is connected to the inner edge of the second support body 222 and fixedly connected to the central shaft 12 in the middle.

[0045] Specifically, for the first rust removal component 21, this application arranges multiple first brush heads 211 evenly spaced along the outer edge of the first support body 212. This allows the first brush heads 211 to effectively contact and clean the inner wall of the pipe as the first support body 212 rotates with the central shaft 12, ensuring cleanliness throughout the circumferential direction and improving the overall efficiency of the cleaning operation. The first bracket 213 is connected to the inner edge of the first support body 212 and fixedly connected to the central shaft 12 in the middle, providing mechanical support for the annular first support body 212 and ensuring its stability during rotation.

[0046] For the second rust removal component 22, this application arranges multiple second brush heads 221 evenly spaced along the outer edge of the second support body 222, enabling the second brush heads 221 to effectively contact and clean the inner wall of the pipe as the second support body 222 rotates with the central shaft 12, ensuring cleanliness throughout the circumferential direction and improving the overall efficiency of the cleaning operation. The second bracket 223 is connected to the inner edge of the second support body 222 and fixedly connected to the central shaft 12 in the middle, providing mechanical support for the annular second support body 222 and ensuring its stability during rotation.

[0047] like Figure 2 and Figure 3 As shown, in some embodiments, the annular first support body 212 has a first through hole 2121 corresponding to the first brush head 211, and the first bracket 213 is provided with a first groove 2131 at one end facing the inner edge of the first support body 212, corresponding to the first brush head 211. The first rust removal component 21 is also provided with a first telescopic component 214, which passes through the first through hole 2121 and is elastically connected at one end to the bottom of the first groove 2131, and at the other end to the first brush head 211. The annular second support body 222 has a second through hole 2221 corresponding to the second brush head 221, and the second bracket 223 is provided with a second groove 2231 at one end facing the inner edge of the second support body 222, and the second rust removal component 22 is also provided with a second telescopic component 224, which passes through the second through hole 2221 and is elastically connected at one end to the bottom of the second groove 2231, and at the other end to the second brush head 221.

[0048] Specifically, for the first rust removal component 21, this application provides a first telescopic component 214, which passes through the first through hole 2121 opened in the first support body 212, and its two ends are elastically connected to the bottom of the first groove 2131 and the first brush head 211, respectively. This allows the first brush head 211 to automatically adjust its extension length according to the actual condition of the inner wall of the pipe through which the device passes. When the diameter of the pipe through which the device passes changes, or when there is a thick rust layer on the inner wall of the pipe, the first telescopic component 214 can drive the first brush head 211 to extend and retract flexibly, ensuring that the first brush head 211 always maintains appropriate contact pressure with the inner wall of the pipe, thereby ensuring the consistency of the cleaning effect.

[0049] For the second rust removal component 22, this application provides a second telescopic component 224, which passes through the second through hole 2221 opened in the second support body 222. The two ends are elastically connected to the bottom of the second groove 2231 and the second brush head 221, respectively. This allows the second brush head 221 to automatically adjust its extension length according to the actual condition of the inner wall of the pipe through which the device passes. When the diameter of the pipe through which the device passes changes, or when there is a thick rust layer on the inner wall of the pipe, the second telescopic component 224 can drive the second brush head 221 to extend and retract flexibly, ensuring that the second brush head 221 always maintains appropriate contact pressure with the inner wall of the pipe, thereby ensuring the consistency of the cleaning effect.

[0050] The first telescopic component 214 and the second telescopic component 224 may include a combination structure of a spring, a rubber buffer, a polyurethane buffer, a linear spring damper and a guide rod, or a bellows telescopic component, etc., whichever is more specific.

[0051] like Figure 1 As shown, in some embodiments, the blowing part 3 includes a plurality of blades 31, which are evenly and alternately arranged along the outer edge of the central axis 12. The blades 31 are bent toward the direction from the first rust removal component 21 to the first drive member 11, and the thickness of the blades 31 decreases along its length direction away from the central axis 12.

[0052] Specifically, the purging section 3 of this application includes multiple blades 31, which are rotated by the central shaft 12 to generate airflow, which is then directed toward the first rust removal component 21. The multiple blades 31 are evenly and alternately arranged along the outer edge of the central shaft 12 to increase the airflow coverage and effectively purge the inner wall of the pipe. This application designs the blades 31 with decreasing thickness along their length away from the central shaft 12, thus balancing the airflow path, reducing turbulence and energy loss, and improving the purging efficiency. The decreasing thickness also makes the blades 31 thinner at the tips, reducing air resistance, increasing the speed and momentum of the generated airflow, and enhancing the purging capability.

[0053] like Figure 1 and Figure 4 As shown, in some embodiments, the depth of the spiral groove 1211 decreases along the direction from the blowing section 3 to the first rust removal component 21.

[0054] Specifically, in order to further improve the purging effect, this application also sets the depth of the spiral groove 1211 to decrease along the direction from the purging section 3 to the first rust removal component 21, so that the cross-section of the spiral groove 1211 gradually becomes smaller. Assuming that the airflow rate blown out by the purging section 3 remains unchanged, according to the relationship between flow rate, cross-section and velocity in the law of conservation of mass, it can be known that the smaller cross-section will increase the airflow velocity through the spiral groove 1211, further improving the purging effect. Moreover, the increase in airflow velocity will increase the centrifugal force, pushing the airflow to move more efficiently toward the inner wall of the pipe. The gradually decreasing depth setting makes the spiral groove 1211 play a guiding role in shifting toward the inner wall of the pipe, improving the uniformity of airflow coverage of the inner wall of the pipe and improving the purging effect.

[0055] like Figure 1 As shown, in some embodiments, the cleaning unit 4 includes a cleaning fluid storage tank 41, a compressor pump 42, and a distribution box 43. The two ends of the compressor pump 42 are respectively connected to the cleaning fluid storage tank 41 and the distribution box 43. The distribution box 43 is disc-shaped and sleeved on the central shaft 12. Multiple distribution channels 431 are opened in the distribution box 43. The ends of the distribution channels 431 are connected to the liquid outlets 44 for spraying out the cleaning fluid under the action of the compressor pump 42.

[0056] Specifically, this application provides a cleaning section 4 on one side of the rust removal device for the inner wall of a natural gas storage and utilization pipeline. Through the outlet 44, a cleaning liquid can be sprayed onto the inner wall of the pipeline under the action of a compression pump 42. Before the brush head contacts the inner wall of the pipeline to perform rust removal, the cleaning liquid softens the stubborn rust, improving cleaning efficiency and effect. At the same time, it protects the first brush head 211 and the second brush head 221 of the rust removal section 2, reducing the workload of the rust removal section 2 and increasing its service life.

[0057] The cleaning fluid in the storage tank 41 is drawn in by the compressor pump 42 and pushed into the distribution box 43. The fluid is then distributed through multiple distribution channels 431 in the distribution box 43 and sprayed out through the outlet 44. Since the cleaning unit 4 is connected to the central shaft 12, this application provides a rotary spraying mode to spray the cleaning fluid before the brush head contacts the inner wall of the pipe for rust removal. The cleaning fluid can be water. When it is necessary to corrode and soften the rust stains on the inner wall of the pipe, the cleaning fluid can also be EDTA (Ethylene Diamine Tetraacetic Acid), oxalic acid, citric acid, etc., selected according to the pipe material and the type of rust in the pipe.

[0058] like Figure 1 As shown, in some embodiments, it further includes a sliding part 5, which includes a support member 51 and a sliding component 52. The support member 51 is fixedly connected to the periphery of the first driving member 11, and the sliding component 52 is disposed at the end of the support member 51 away from the first driving member 11.

[0059] Specifically, during the forward movement of the rust removal device on the inner wall of the natural gas storage and utilization pipeline, the sliding component 52 makes sliding contact with the inner wall of the pipeline, reducing friction between the rust removal device and the inner wall, thus ensuring smooth progress of the rust removal operation. Furthermore, the support member 51 and the sliding component 52 support the first driving member 11, ensuring its centering within the pipeline and guaranteeing the central axis 12's alignment within the pipeline, thereby ensuring the rust removal effect of the rust removal section 2 and the purging section 3. The support member 51 is fixedly connected to the periphery of the first driving member 11 using bolts, screws, or other methods. The sliding component 52 is located at the end of the support member 51 opposite to the first driving member 11, allowing it to slide against the inner wall of the pipeline during operation via a single pulley 522 or a set of pulleys 522 for chip removal.

[0060] like Figure 1 As shown, in some embodiments, the sliding assembly 52 includes a telescopic rod 521 and a pulley 522. The two ends of the telescopic rod 521 are respectively connected to the support member 51 and the pulley 522. The telescopic rod 521 drives the pulley 522 to move closer to or away from the support member 51.

[0061] Specifically, the telescopic movement of the telescopic rod 521 can improve the adaptability of the rust removal device for the inner wall of the natural gas storage and utilization pipeline during its movement within the pipeline. Simultaneously, it provides a buffering effect on the contact between the pulley 522 and the inner wall of the pipeline, improving the safety and reliability of the rust removal operation. The pulley 522 can be configured as a caster wheel for flexible sliding on the inner wall of the pipeline, or a limiting structure can be provided for the caster wheel to restrict its sliding trajectory; the specific configuration is not limited. The number of sliding components 52 in this application is not limited and can be adjusted adaptively according to actual conditions.

[0062] like Figure 5 As shown, in some embodiments, it further includes: a blocking part 6, which is a circular plate sleeved on the central shaft 12 and spaced between the first driving member 11 and the blowing part 3. The outer edge of the blocking part 6 is elastic and the size of the outer edge corresponds to that of the driving part 1.

[0063] Specifically, in order to protect the first drive component 11 in the rust removal device for the inner wall of the natural gas storage and utilization pipeline, this application provides a barrier 6 between the first drive component 11 and the purging section 3. This effectively prevents dust, debris, and other impurities from entering the interior of the first drive component 11, helping to maintain the cleanliness of the first drive component 11 and avoiding mechanical failures caused by foreign objects. In addition, the barrier 6 can guide the airflow generated by the purging section 3, creating a vortex effect that effectively blows towards the first rust removal assembly 21.

[0064] Furthermore, the outer edge of the barrier portion 6 in this application is elastic, and the size of the outer edge corresponds to that of the drive portion 1. This allows the barrier portion 6 to form a dynamic seal inside the pipeline during device operation. Simultaneously, the elastic outer edge can adapt to different pipeline wall conditions, improving stability. The barrier portion 6 can be a metal or plastic circular plate fitted with a rubber retaining ring, or it can be a one-piece molded circular plate with an elastic outer edge; the specific design is not limited.

[0065] In some embodiments, it further includes: a positioning part (not shown in the figure), which is fixedly connected to the periphery of the first driving member 11, and is used to collect position information.

[0066] Specifically, this application utilizes a locator to collect the location information of the rust removal device within the natural gas storage and utilization pipeline during operation. This prevents the rust removal device from stopping due to pipeline damage or deep corrosion, thus ensuring its location is detected and affecting subsequent rust removal work. The locating unit can be an IMU (Inertial Measurement Unit), a laser rangefinder, or other suitable device.

[0067] The embodiments of this disclosure have now been described in detail. To avoid obscuring the concept of this disclosure, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0068] While specific embodiments of this disclosure have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of this disclosure. Those skilled in the art should understand that modifications can be made to the above embodiments or equivalent substitutions can be made to some technical features without departing from the scope and spirit of this disclosure. In particular, as long as there is no structural conflict, the technical features mentioned in the various embodiments can be combined in any manner.

Claims

1. A device for removing rust from the inner wall of a pipeline for natural gas storage and transportation, characterized in that, The device comprises a driving part (1), a rust removing part (2) and a blowing part (3). The driving part (1) comprises a first driving member (11) and a middle shaft (12), and the first driving member (11) is connected to one end of the middle shaft (12). The rust removing part (2) comprises a first rust removing assembly (21) and a second rust removing assembly (22), and the first rust removing assembly (21) and the second rust removing assembly (22) are connected to the middle shaft (12) at intervals, the second rust removing assembly (22) is farther away from the first driving member (11) than the first rust removing assembly (21), the first rust removing assembly (21) is provided with a first brush head (211), the second rust removing assembly (22) is provided with a second brush head (221), and the first rust removing assembly (21) is further provided with a second driving member, the driving end of the second driving member is connected to the first brush head (211) to drive the first brush head (211) to rotate and the rotation axis is perpendicular to the middle shaft (12). The blowing part (3) is fixedly connected to the middle shaft (12) and is arranged at intervals between the first rust removing assembly (21) and the first driving member (11). The first driving member (11) drives the middle shaft (12) to rotate, and drives the first rust removing assembly (21), the second rust removing assembly (22) and the blowing part (3) to rotate, and the blowing part (3) rotates to blow towards the first rust removing assembly (21).

2. The device according to claim 1, wherein the hardness of the second brush head (221) is greater than that of the first brush head (211); and / or the first rust removing assembly (21) is further provided with a first support body (212) and a first support frame (213), the first support body (212) is in the shape of a ring, a plurality of first brush heads (211) are arranged at intervals along the outer edge of the first support body (212), and the first support frame (213) is connected to the inner edge of the first support body (212) and is fixedly connected to the middle shaft (12) at the middle part; and / or the second rust removing assembly (22) is further provided with a second support body (222) and a second support frame (223), the second support body (222) is in the shape of a ring, a plurality of second brush heads (221) are arranged at intervals along the outer edge of the second support body (222), and the second support frame (223) is connected to the inner edge of the second support body (222) and is fixedly connected to the middle shaft (12) at the middle part.

3. The device according to claim 2, wherein ​ ​ ​ The first support body (212) is circular, and a first through hole (2121) is formed in the first support body (212) corresponding to the first brush head (211); the first support (213) is arranged corresponding to the first brush head (211) and is provided with a first groove (2131) at one end of the inner edge of the first support body (212); the first rust removal assembly (21) is further provided with a first telescopic assembly (214), the first telescopic assembly (214) is arranged in the first through hole (2121), one end of the first telescopic assembly (214) is elastically connected to the bottom of the first groove (2131), and the other end of the first telescopic assembly (214) is connected to the first brush head (211); The second support body (222) is circular, and a second through hole (2221) is formed in the second support body (222) corresponding to the second brush head (221); the second support (223) is arranged corresponding to the second brush head (221) and is provided with a second groove (2231) at one end of the inner edge of the second support body (222); the second rust removal assembly (22) is further provided with a second telescopic assembly (224), the second telescopic assembly (224) is arranged in the second through hole (2221), one end of the second telescopic assembly (224) is elastically connected to the bottom of the second groove (2231), and the other end of the second telescopic assembly (224) is connected to the second brush head (221).

4. The natural gas storage and transportation pipeline inner wall rust removal device according to claim 1, characterized in that, The blowing part (3) comprises a plurality of blades (31), the plurality of blades (31) are arranged along the outer edge of the central shaft (12) in a staggered manner, the blades (31) are curved towards the direction from the first rust removal assembly (21) to the first driving element (11), and the thickness of the blades (31) decreases along the length direction away from the central shaft (12).

5. The natural gas storage and transportation pipeline inner wall rust removal device according to claim 1, characterized in that, The central shaft (12) has a flow guide section (121), the flow guide section (121) is located between the blowing part (3) and the first rust removal assembly (21), the flow guide section (121) is provided with a spiral groove (1211), and the depth of the spiral groove (1211) decreases along the direction from the blowing part (3) to the first rust removal assembly (21).

6. The natural gas storage and transportation pipeline inner wall rust removal device according to claim 1, characterized in that, The device further comprises a cleaning part (4), the cleaning part (4) is fixedly connected to the central shaft (12) and is arranged on the side, away from the first rust removal assembly (21), of the second rust removal assembly (22) in a spaced manner, and a liquid outlet (44) is arranged on the outer edge of the cleaning part (4); The first driving element (11) drives the central shaft (12) to rotate, thereby driving the cleaning part (4) to rotate, and the liquid outlet (44) of the cleaning part (4) discharges liquid along with the rotation of the central shaft (12).

7. The natural gas storage and transportation pipeline inner wall rust removal device according to claim 6, characterized in that, The cleaning part (4) comprises a cleaning liquid storage tank (41), a compression pump (42) and a shunt tank (43), two ends of the compression pump (42) are connected with the cleaning liquid storage tank (41) and the shunt tank (43) respectively, the shunt tank (43) is in the form of a disc and is sleeved on the middle shaft (12), a plurality of shunt channels (431) are formed in the shunt tank (43), and the shunt channels (431) are connected with the liquid outlet (44) at the end portions thereof to spray cleaning liquid under the action of the compression pump (42).

8. The device for removing rust from the inner wall of a pipeline for storing and transporting natural gas according to claim 1, characterized in that, Further comprising: The sliding part (5) comprises a support (51) and a sliding assembly (52), the support (51) is fixedly connected with the periphery of the first driving part (11), and the sliding assembly (52) is arranged at the end of the support (51) away from the first driving part (11).

9. The natural gas storage and transportation pipeline inner wall rust removal device according to claim 8, characterized in that, The sliding assembly (52) comprises a telescopic rod (521) and a pulley (522), two ends of the telescopic rod (521) are connected with the support (51) and the pulley (522) respectively, and the telescopic rod (521) drives the pulley (522) to move close to or away from the support (51).

10. The device for removing rust from the inner wall of a pipeline for storing and transporting natural gas according to claim 1, characterized in that, Further comprising: The blocking part (6) is in the form of a disc and is sleeved on the middle shaft (12), is arranged between the first driving part (11) and the blowing part (3) at intervals, the outer edge of the blocking part (6) is elastic, and the size of the outer edge corresponds to the driving part (1); and / or, The positioning part is fixedly connected with the periphery of the first driving part (11), and is used for collecting position information.

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