A pipeline inner wall pretreatment system

Abstract

The application discloses a pipeline inner wall pretreatment system and relates to the technical field of pipeline inner wall processing. The pipeline inner wall pretreatment system comprises a main pipe, a supporting part, a cleaning assembly, a air-drying assembly and a traction device. The supporting part is arranged on the main pipe and is used for cooperating in a pipeline to be processed to separate the inner cavity of the pipeline to be processed. The cleaning assembly comprises a first nozzle used for spraying cleaning materials. The air-drying assembly comprises a second nozzle used for spraying gas. The first nozzle and the second nozzle can rotate around the axis of the main pipe to perform circumferential processing on the inner wall of the pipeline to be processed. The traction device is connected with the front end of the main pipe and is used for driving the main pipe to move along the axial direction of the pipeline to be processed in the pipeline to be processed. The pipeline inner wall pretreatment system can safely and efficiently clean and process the inner wall of the pipeline and guarantees the rust-proof effect of the inner wall of the pipeline.

Description

Technical Field

[0001] This invention relates to the field of pipe inner wall processing technology, and more specifically, to a pipe inner wall pretreatment system. Background Technology

[0002] In related technologies, pretreatment methods for the inner walls of small-diameter pipes typically include sandblasting and water pressure rust removal. However, sandblasting is not environmentally friendly and can damage personnel's health, and it can easily cause sand and gravel to break and become embedded in the pipe wall. In water pressure rust removal, the water jet from the nozzle is fan-shaped and cannot completely cover the inner wall of the pipe, resulting in poor cleaning effect and the residual moisture can easily cause corrosion of the inner wall of the pipe. Summary of the Invention

[0003] The present invention aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, this invention proposes a pipe inner wall pretreatment system that can safely and efficiently clean the inner wall of a pipe, ensuring the rust prevention effect of the inner wall.

[0005] The pipe inner wall pretreatment system of this invention includes:

[0006] The main pipe and the support section are provided around the main pipe and are used to fit inside the pipe to be treated and to divide the inner cavity of the pipe to be treated.

[0007] A cleaning assembly is disposed at the front end of the main pipe. The cleaning assembly includes a first connecting pipe and a first nozzle. The first nozzle is located on the front side of the support. The first connecting pipe passes through the main pipe and is connected to the first nozzle for conveying cleaning material to the first nozzle. The first nozzle is used to spray the cleaning material onto the inner wall of the pipe to be treated.

[0008] A drying assembly is provided at the rear end of the main pipe. The drying assembly includes a second connecting pipe and a second nozzle. The second nozzle is located on the rear side of the support. The second connecting pipe is connected to the second nozzle and is used to deliver gas to the second nozzle. The second nozzle is used to spray the gas onto the inner wall of the pipe to be treated.

[0009] The first nozzle can rotate around the main axis under the reaction force of the cleaning material and the second nozzle can rotate under the reaction force of the gas to perform circumferential treatment on the inner wall of the pipe to be treated.

[0010] A traction device is connected to the front end of the main pipe and is used to move the main pipe along the axial direction of the pipe to be treated within the pipe to be treated.

[0011] The pipe inner wall pretreatment system of this invention can safely and efficiently clean the inner wall of the pipe, ensuring the rust prevention effect of the inner wall of the pipe.

[0012] In some embodiments, the traction device is a feeding robot;

[0013] Alternatively, the traction device includes a traction rope and a winch, the traction rope being wound around the winch and connected to the main pipe, the winch being used to tighten the traction rope to move the main pipe.

[0014] In some embodiments, the other end of the first connecting pipe is connected to a first pump and a second pump, respectively. The first pump is used to deliver water into the first connecting pipe, and the second pump is used to deliver abrasive into the first connecting pipe.

[0015] In some embodiments, the end of the first connecting pipe is connected to a first branch pipe and a second branch pipe, the first branch pipe is connected to the first pump, the second branch pipe is connected to the second pump, and the first branch pipe and the second branch pipe are used to mix the water and the abrasive in the first connecting pipe.

[0016] In some embodiments, the support portion is provided in two parts, namely a first support portion and a second support portion, the first support portion and the second support portion are arranged at an axial distance along the main pipe, and the first support portion is located in front of the second support portion.

[0017] In some embodiments, the main tube includes a connecting segment, the two ends of which are respectively connected to the first support portion and the second support portion, and the connecting segment is made of a flexible material.

[0018] In some embodiments, the first support portion and the second support portion have the same structure. The first support portion includes an inner ring portion, a connecting portion, an outer ring portion and a protective portion. The inner ring portion is connected to the main pipe. Multiple connecting portions are spaced apart along the circumference of the inner ring portion. The connecting portions are elastic and their two ends are respectively connected to the inner ring portion and the outer ring portion. The protective portion is sleeved on the outer ring portion and is used to abut against the inner wall of the pipe to be treated.

[0019] In some embodiments, the drying assembly includes a third pump and a heating assembly, the third pump being used to deliver gas to the second nozzle through the second connecting pipe, and the heating assembly being disposed in the second connecting pipe and used to heat the gas delivered to the second nozzle.

[0020] In some embodiments, the first nozzle employs a Laval nozzle structure, and / or the second nozzle employs a Laval nozzle structure.

[0021] In some embodiments, the angle between the spray direction of the first nozzle and the radial direction of the pipe to be treated is an acute angle, and / or, the angle between the spray direction of the second nozzle and the radial direction of the pipe to be treated is an acute angle. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the pipe inner wall pretreatment system according to an embodiment of the present invention.

[0023] Figure 2 This is a schematic diagram of the structure of the first support part in the pipe inner wall pretreatment system according to an embodiment of the present invention.

[0024] Figure label:

[0025] Supervisor 1;

[0026] Cleaning assembly 2; First nozzle 21; First pump 22; Second pump 23; First branch pipe 24; Second branch pipe 25;

[0027] Air drying component 3; second nozzle 31; heating component 32;

[0028] Traction device 4;

[0029] First support part 5; first inner ring part 51; first connecting part 52; first outer ring part 53; first protective part 54;

[0030] Second support section 6. Detailed Implementation

[0031] Embodiments of the present invention are described in detail below, with examples of the embodiments illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0032] like Figure 1 and Figure 2As shown, the pipe inner wall pretreatment system of this embodiment includes a main pipe 1, a support part, a cleaning component 2, a drying component 3, and a traction device 4. The support part is located around the main pipe 1 and is used to fit inside the pipe to be treated and to divide the inner cavity of the pipe. The cleaning component 2 is located at the front end of the main pipe 1 and includes a first connecting pipe and a first nozzle 21. The first nozzle 21 is located in front of the support part. The first connecting pipe passes through the main pipe 1 and is connected to the first nozzle 21 to deliver cleaning material to the first nozzle 21. The first nozzle 21 is used to spray cleaning material onto the inner wall of the pipe to be treated. The drying component 3 is located around the main pipe 1. At the rear end of the main pipe 1, the drying assembly 3 includes a second connecting pipe and a second nozzle 31. The second nozzle 31 is located on the rear side of the support. The second connecting pipe is connected to the second nozzle 31 and is used to supply gas to the second nozzle 31. The second nozzle 31 is used to spray gas onto the inner wall of the pipe to be treated. The first nozzle 21 can rotate around the axis of the main pipe 1 under the action of the reaction force of the cleaning material and the second nozzle 31 can rotate under the action of the reaction force of the gas to perform circumferential treatment on the inner wall of the pipe to be treated. The traction device 4 is connected to the front end of the main pipe 1 and is used to drive the main pipe 1 to move along the axial direction of the pipe to be treated inside the pipe to be treated.

[0033] In use, the pipe inner wall pretreatment system of this invention involves attaching a support to the end of the pipe to be treated and moving the main pipe 1 via a traction device 4. This causes the support, the first nozzle 21, and the second nozzle 31 to move along the axis of the pipe to be treated. Simultaneously, the first nozzle 21 rotates around the axis of the main pipe 1 to spray cleaning material onto the inner wall of the pipe to be treated. During the movement, the support scrapes away debris from the inner wall of the pipe to be treated, reducing the adhesion of the cleaning material. The second nozzle 31 rotates around the axis of the main pipe 1 to spray gas onto the inner wall of the pipe to be treated, accelerating the drying of the inner wall of the pipe to be treated, thereby achieving continuous rust removal treatment of the inner wall of the pipe to be treated.

[0034] The pipe inner wall pretreatment system of this invention can safely and efficiently clean the inner wall of the pipe, ensuring the rust prevention effect of the inner wall of the pipe.

[0035] Optionally, a plurality of first nozzles 21 are provided at circumferential intervals in the main pipe 1, and a plurality of second nozzles 31 are provided at circumferential intervals in the main pipe 1.

[0036] In some embodiments, such as Figure 1 As shown, the traction device 4 is a feeding robot.

[0037] The feeding robot is used to move along the axis of the pipe to be processed, thereby moving the main pipe 1 and the support part. It is easy to operate.

[0038] Optionally, the feeding robot is a snake-shaped robot made of plastic, with the tail end of the snake-shaped robot connected to the end of the main tube 1.

[0039] In some embodiments, the traction device 4 includes a traction rope and a winch. The traction rope is wound around the winch and connected to the main pipe 1. The winch is used to tighten the traction rope to move the main pipe 1.

[0040] The winch winds up the traction rope, which in turn drives the main pipe 1 and the support to move, thereby enabling the first and second nozzles to move at a constant speed along the axial direction of the pipe to be treated, ensuring that the first and second nozzles spray evenly inside the pipe.

[0041] In some embodiments, such as Figure 1 As shown, the other end of the first connecting pipe is connected to a first pump 22 and a second pump 23 respectively. The first pump 22 is used to deliver water into the first connecting pipe, and the second pump 23 is used to deliver abrasive into the first connecting pipe.

[0042] The first pump 22 and the second pump 23 are connected to the end of the first connecting pipe, so that the cleaning material is a mixture of water and abrasive. This ensures the rust removal pressure on the inner wall of the pipe to be treated, and avoids the problem of the cleaning material embedding or adhering to the inner wall of the pipe to be treated, making it easier to clean the inner wall of the pipe to be treated.

[0043] In some embodiments, such as Figure 1 As shown, the end of the first connecting pipe is connected to a first branch pipe 24 and a second branch pipe 25. The first branch pipe 24 is connected to the first pump 22, and the second branch pipe 25 is connected to the second pump 23. The first branch pipe 24 and the second branch pipe 25 are used to mix water and abrasive in the first connecting pipe.

[0044] The first branch pipe 24 and the second branch pipe 25 are set up to mix the water and abrasive in the first connecting pipe, which is convenient to operate and accelerates the mixing efficiency of water and abrasive.

[0045] In some embodiments, such as Figure 1 As shown, there are two support parts, namely the first support part 5 and the second support part 6. The first support part 5 and the second support part 6 are arranged at intervals along the axial direction of the main pipe 1, and the first support part 5 is located in front of the second support.

[0046] The first support part 5 and the second support part 6 are provided to facilitate the separation of the first nozzle 21 and the second nozzle 31 by a set distance. The first support part 5 and the second support part 6 can achieve two scrapings of the inner wall of the pipe to be treated, avoiding the adhesion of cleaning material inside the pipe. At the same time, the working interval between the first nozzle 21 and the second nozzle 31 at the same position inside the pipe to be treated is extended, ensuring the drying effect of the second nozzle 31 on the inner wall of the pipe to be treated.

[0047] In some embodiments, the main tube 1 includes a connecting section, the two ends of which are connected to the first support portion 5 and the second support portion 6 respectively, and the connecting section is made of a flexible material.

[0048] The first support part 5 and the second support part 6 are connected by a connecting section. The connecting section is flexible. When processing the pipe to be processed with a bend, the first support part 5 and the second support part 6 pass through the bend in sequence under the drive of the traction device 4, so as to be suitable for processing the inner wall of the pipe to be processed in a bend.

[0049] In some embodiments, such as Figure 2 As shown, the first support part 5 includes a first inner ring part 51, a first connecting part 52, a first outer ring part 53 and a first protective part 54. The first inner ring part 51 is connected to the main pipe 1. Multiple first connecting parts 52 are provided at intervals along the circumference of the first inner ring part 51. The two ends of the first connecting part 52 are respectively connected to the first inner ring part 51 and the first outer ring part 53. The first protective part 54 is sleeved on the first outer ring part 53 and is used to abut against the inner wall of the pipe to be treated.

[0050] A first elastic connecting part 52 is provided between the first inner ring part 51 and the first outer ring part 53. During the movement of the first support part 5, the first connecting part 52 can maintain the connection between the first inner ring part 51 and the first outer ring part 53 through its own elastic force, and make the main pipe 1 have a certain radial displacement relative to the first outer ring part 53, so as to ensure the stability of the first support part 5 during use.

[0051] Optionally, the first connecting part 52 is a spring.

[0052] Optionally, the first protective part 54 is a rubber sealing ring.

[0053] In some embodiments, the second support portion 6 includes a second inner ring portion, a second connecting portion, a second outer ring portion, and a second protective portion. The second inner ring portion is connected to the main pipe 1. Multiple second connecting portions are provided at intervals along the circumference of the second inner ring portion. The two ends of the second connecting portions are respectively connected to the second inner ring portion and the second outer ring portion. The second protective portion is sleeved on the second outer ring portion and is used to abut against the inner wall of the pipe to be treated.

[0054] A second elastic connecting part is provided between the second inner ring and the second outer ring. During the movement of the second support part 6, the second connecting part can maintain the connection between the second inner ring and the second outer ring through its own elastic force, and make the main pipe 1 have a certain radial displacement relative to the second outer ring, so as to ensure the stability of the second support part 6 during use.

[0055] Optionally, the second connecting part is a spring.

[0056] Optionally, the second protective part is a rubber sealing ring.

[0057] In some embodiments, such as Figure 1 As shown, the air-drying assembly 3 includes a third pump and a heating assembly 32. The third pump is used to deliver gas to the second nozzle 31 through the second connecting pipe, and the heating assembly 32 is disposed on the second connecting pipe and is used to heat the gas delivered to the second nozzle 31.

[0058] The heating component 32 is provided to heat the gas in the second connecting pipe that is used to supply gas to the second nozzle 31, so as to accelerate the drying efficiency of the gas sprayed by the second nozzle 31 on the inner wall of the pipe to be treated.

[0059] In some embodiments, the first nozzle 21 adopts a Laval nozzle structure.

[0060] By adopting a Laval nozzle structure for the first nozzle 21, the injection pressure of the cleaning material at the nozzle 21 and the central angle of the corresponding spray fan are increased under the same pumping pressure.

[0061] In some embodiments, the second nozzle 31 adopts a Laval nozzle structure.

[0062] By adopting a Laval nozzle structure for the second nozzle 31, the injection pressure of the gas at the nozzle orifice of the second nozzle 31 and the central angle of the injection fan are increased under the same pumping pressure.

[0063] In some embodiments, the angle between the spray direction of the first nozzle 21 and the radial direction of the pipe to be treated is an acute angle.

[0064] The cleaning material ejected from the first nozzle 21 impacts the inner wall of the pipe to be treated at a set angle, which facilitates rust removal from the inner wall of the pipe and allows the cleaning material to bounce off the inner wall of the pipe, preventing the cleaning material from becoming embedded in the inner wall of the pipe.

[0065] Optionally, the angle between the spray direction of the first nozzle 21 and the radial direction of the pipe to be treated is 30°.

[0066] Optionally, the first nozzle 21 is tilted toward the forward direction of the main pipe 1.

[0067] In some embodiments, the angle between the spray direction of the second nozzle 31 and the radial direction of the pipe to be treated is an acute angle.

[0068] The gas ejected from the second nozzle 31 impacts the inner wall of the pipe to be treated at a set angle, causing the water on the inner wall of the pipe to move in a set direction, and at the same time facilitating the drying of the water on the inner wall of the pipe.

[0069] Optionally, the spray direction of the second nozzle 31 forms an angle of 30° with the radial direction of the pipe to be treated.

[0070] Optionally, the second nozzle 31 is tilted toward the forward direction of the main pipe 1.

[0071] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0072] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0073] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0074] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0075] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0076] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A pipe inner wall pretreatment system, characterized in that, include: The main pipe and the support section are provided around the main pipe and are used to fit inside the pipe to be treated and to divide the inner cavity of the pipe to be treated. A cleaning assembly is disposed at the front end of the main pipe. The cleaning assembly includes a first connecting pipe and a first nozzle. The first nozzle is located on the front side of the support. The first connecting pipe passes through the main pipe and is connected to the first nozzle for conveying cleaning material to the first nozzle. The first nozzle is used to spray the cleaning material onto the inner wall of the pipe to be treated. A drying assembly is provided at the rear end of the main pipe. The drying assembly includes a second connecting pipe and a second nozzle. The second nozzle is located on the rear side of the support. The second connecting pipe is connected to the second nozzle and is used to deliver gas to the second nozzle. The second nozzle is used to spray the gas onto the inner wall of the pipe to be treated. The first nozzle can rotate around the main axis under the reaction force of the cleaning material and the second nozzle can rotate under the reaction force of the gas to perform circumferential treatment on the inner wall of the pipe to be treated. A traction device, which is connected to the front end of the main pipe and is used to move the main pipe along the axial direction of the pipe to be treated within the pipe to be treated; The other end of the first connecting pipe is connected to a first pump and a second pump, respectively. The first pump is used to deliver water into the first connecting pipe, and the second pump is used to deliver abrasive into the first connecting pipe. The support portion is provided in two parts, namely a first support portion and a second support portion. The first support portion and the second support portion are arranged at intervals along the axial direction of the main pipe, and the first support portion is located in front of the second support portion. The first support and the second support have the same structure. The first support includes an inner ring, a connecting part, an outer ring, and a protective part. The inner ring is connected to the main pipe. Multiple connecting parts are spaced apart along the circumference of the inner ring. The connecting parts are elastic and their two ends are connected to the inner ring and the outer ring, respectively. The protective part is sleeved on the outer ring and is used to abut against the inner wall of the pipe to be treated.

2. The pipe inner wall pretreatment system according to claim 1, characterized in that, The traction device is a feeding robot; Alternatively, the traction device includes a traction rope and a winch, the traction rope being wound around the winch and connected to the main pipe, the winch being used to tighten the traction rope to move the main pipe.

3. The pipe inner wall pretreatment system according to claim 1, characterized in that, The first connecting pipe has a first branch pipe and a second branch pipe connected to its end. The first branch pipe is connected to the first pump, and the second branch pipe is connected to the second pump. The first branch pipe and the second branch pipe are used to mix the water and the abrasive in the first connecting pipe.

4. The pipe inner wall pretreatment system according to claim 1, characterized in that, The main tube includes a connecting section, the two ends of which are respectively connected to the first support part and the second support part, and the connecting section is made of a flexible material.

5. The pipe inner wall pretreatment system according to claim 1, characterized in that, The air-drying assembly includes a third pump and a heating assembly. The third pump is used to deliver gas to the second nozzle through the second connecting pipe, and the heating assembly is disposed in the second connecting pipe and is used to heat the gas delivered to the second nozzle.

6. The pipe inner wall pretreatment system according to claim 1, characterized in that, The first nozzle adopts a Laval nozzle structure, and / or the second nozzle adopts a Laval nozzle structure.

7. The pipe inner wall pretreatment system according to claim 1, characterized in that, The angle between the spray direction of the first nozzle and the radial direction of the pipe to be treated is an acute angle, and / or the angle between the spray direction of the second nozzle and the radial direction of the pipe to be treated is an acute angle.

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