Gas pipeline transformation method applying pipeline installation auxiliary device

Abstract

The invention discloses a gas pipeline transformation method applying a pipeline mounting auxiliary device, which comprises the following steps: dismounting, inner wall treatment and mounting, the pipeline mounting auxiliary device is used for both dismounting and mounting, and a pipeline robot is used for cleaning the dismounted gas pipeline section by section and spraying a protective layer from the inside in the inner wall treatment. The pipeline mounting auxiliary device has the beneficial effects that during dismounting and mounting, the pipeline mounting auxiliary device is used for synchronously clamping the two gas pipelines to guarantee the coaxiality of the two gas pipelines, so that dismounting and mounting are convenient, and flange deformation, bolt shearing and instant falling of the gas pipelines during dismounting and mounting are avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of gas pipeline reconstruction, and in particular to a gas pipeline reconstruction method using a pipeline installation auxiliary device. Background Art

[0002] The inner wall of the gas pipeline will corrode due to self-oxidation, corrosion caused by impurities in the gas, etc. Therefore, solving this corrosion problem is one of the main goals of gas pipeline reconstruction.

[0003] In an attempt to solve the above-mentioned corrosion problem, CN212236419U discloses a gas filter device, which intercepts impurities mixed in the gas by installing a filter device in the gas pipeline, in the hope of solving the corrosion problem. However, the filter device only has a partial effect on the corrosion of impurities mixed in the gas, but does not help the oxidation of the inner wall of the gas pipeline at all, resulting in its limited anti-corrosion effect.

[0004] In addition, when renovating a gas pipeline, it is usually necessary to dismantle the gas pipeline in sequence, clean the inner wall, and reinstall it. During dismantling and installation, only a wrench tool is usually used to remove and tighten the bolts fixed between the gas pipelines through the flange. When removing or installing the bolts, misalignment may occur between two adjacent gas pipelines, which may cause deformation of the flange and shearing of the bolts.

[0005] Therefore, in order to solve the above technical problems, the present invention provides a gas pipeline reconstruction method using a pipeline installation auxiliary device. Summary of the invention

[0006] The purpose of the present invention is to provide a gas pipeline reconstruction method using a pipeline installation auxiliary device. During disassembly and installation, the pipeline installation auxiliary device is used to synchronously clamp two gas pipelines to ensure the coaxiality of the two gas pipelines, thereby facilitating disassembly and installation and avoiding flange deformation, bolt shearing and instantaneous falling of the gas pipeline during disassembly and installation.

[0007] To achieve the above object, the present invention is implemented by adopting the following technical solutions:

[0008] The present invention provides a gas pipeline modification method using a pipeline installation auxiliary device, which comprises the following steps:

[0009] Disassembly: Use pipeline installation auxiliary equipment to disassemble the connection position of the gas pipeline into multiple sections;

[0010] Inner wall treatment: use pipeline robots to clean and spray protective layers on the dismantled gas pipeline section by section from the inside;

[0011] Installation, using the pipeline installation auxiliary device to sequentially connect multiple sections of gas pipelines with treated inner walls, the pipeline installation auxiliary device includes:

[0012] A pre-positioning assembly, the pre-positioning assembly comprising a pre-positioning plate, a first connecting column and a first electromagnet, the pre-positioning plates are two and fixedly connected by the first connecting column, the pre-positioning plate forms an arc that is adapted to the end of the gas pipeline and has a central angle of ≤180°, and the first electromagnet is evenly arranged along the circumference of the pre-positioning plate;

[0013] A centering assembly, the centering assembly includes a centering plate, a second connecting column and a second electromagnet, the centering plate is two and fixedly connected by the second connecting column, the centering plate forms an arc that is compatible with the end of the gas pipeline and has a central angle of ≤180°, the second electromagnet is evenly arranged along the circumference of the centering plate, and the centering plate is detachably connected to the pre-positioning plate.

[0014] Furthermore, the first electromagnet and the second electromagnet are respectively mounted on the pre-positioning plate and the centering plate in an adjustably manner along their respective radial directions.

[0015] Furthermore, the pipeline robot comprises:

[0016] body;

[0017] A crawling mechanism, installed on the fuselage, for providing a driving force for the fuselage to crawl along the inner wall of the gas pipeline;

[0018] A cleaning mechanism is installed on the fuselage and cleans the inner wall of the gas pipeline as the fuselage crawls;

[0019] A spraying mechanism is installed on the fuselage and sprays an anti-corrosion layer on the inner wall of the gas pipeline as the fuselage crawls. The cleaning mechanism, the crawling mechanism and the spraying mechanism are arranged in sequence along the crawling direction of the fuselage. A waste box fixed to the fuselage and opening upward is also provided between the cleaning mechanism and the crawling mechanism.

[0020] Furthermore, the pipeline robot further comprises a controller, wherein:

[0021] The cleaning mechanism also includes a cleaning detection unit configured to detect the cleanliness of the gas pipeline;

[0022] The controller is configured as follows:

[0023] If the cleaning degree is qualified, the crawling mechanism drives the fuselage to continue crawling and the spraying mechanism continues spraying;

[0024] If the cleaning degree is unqualified, the spraying mechanism stops and the crawling mechanism drives the body to retreat to a position where the cleaning degree is qualified.

[0025] Furthermore, the crawling mechanism comprises:

[0026] a first distance adjustment component;

[0027] There are at least three crawling assemblies which are evenly arranged around the central axis, and each crawling assembly is adjustable in distance from the central axis through a first distance adjustment assembly.

[0028] Further, the first distance adjustment assembly includes a first motor, a first hydraulic pump, and a first hydraulic cylinder, and the first motor drives the first hydraulic pump to operate so that the working end of the first hydraulic cylinder is extended and retracted, thereby adjusting the distance between the crawling assembly and the central axis;

[0029] The crawling assembly includes a crawling motor and a crawling wheel. The crawling motor is rotatably mounted on the working end of the first hydraulic cylinder. The rotation axis of the crawling motor is perpendicular to the central axis. The crawling wheel is sleeved on the outer edge of the crawling motor.

[0030] Furthermore, the cleaning mechanism comprises:

[0031] a second distance adjustment component;

[0032] There are at least one group of cleaning components, each group of cleaning components has at least three components and is evenly arranged around the central axis, and each cleaning component is adjustable in distance to the central axis through a second distance adjustment component.

[0033] Further, the second distance adjustment component includes a second motor, a second hydraulic pump and a second hydraulic cylinder, and the second motor drives the second hydraulic pump to work so that the working end of the second hydraulic cylinder is extended and retracted, thereby adjusting the distance between the cleaning component and the central axis;

[0034] The cleaning assembly includes a cleaning motor and a cleaning head. The housing of the cleaning motor is fixed to the working end of the second hydraulic cylinder. The cleaning head is rotatably arranged under the drive of the cleaning motor, and the rotation axis of the cleaning head is parallel to the central axis.

[0035] Furthermore, the cleaning components are in at least two groups, and the at least two groups of cleaning components are arranged in sequence along the central axis.

[0036] Furthermore, the spraying mechanism comprises:

[0037] A feeding pump, connected to the controller signal and disposed separately from the body;

[0038] A nozzle is fixed to the machine body, and a discharge port of the nozzle extends outward;

[0039] A feeding pipe has a first end connected to the spray head and a second end connected to a feeding pump capable of providing high-pressure spray material.

[0040] The beneficial effects of the present invention are as follows:

[0041] During disassembly and installation, use pipeline installation auxiliary devices to clamp the two gas pipelines synchronously to ensure the coaxiality of the two gas pipelines, thereby facilitating disassembly and installation and avoiding flange deformation, bolt shearing and instantaneous fall of the gas pipeline during disassembly and installation;

[0042] The pipeline installation auxiliary device ensures the coaxiality of the gas pipeline by the following means:

[0043] First, use the pre-positioning assembly to pre-position. First, buckle the inner side of the pre-positioning plate to the outer wall of the gas pipeline, and the inner side of the first electromagnet plate is in close contact with the outer wall of the gas pipeline (the force is applied by the attraction provided by the first electromagnet), and the two pre-positioning plates are respectively in close contact with the end of a gas pipeline to complete the pre-positioning of the pre-positioning plate;

[0044] Then use the centering assembly for centering, buckle the centering plate and the pre-positioning plate, and then fix them with a detachable connector. After fixation, the first electromagnet and the second electromagnet enclose an internal space and maintain a small gap (such as 0.1-0.5mm) with the gas pipeline. Then the first electromagnet and the second electromagnet are started to provide magnetic attraction to attract the pre-positioning plate and the centering plate to the gas pipeline. The first connecting column and the second connecting column are slightly deformed by the tensile stress directed to the inside of the gas pipeline, thereby avoiding deformation or even damage of the gas pipeline due to pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 A side view of an embodiment of an assembly state of a pipeline installation auxiliary device and a gas pipeline;

[0046] Figure 2 A perspective view of an embodiment of a pipeline robot crawling along the inner wall of a gas pipeline;

[0047] Figure 3 It is a schematic diagram of the three-dimensional structure of an embodiment of a pipeline robot from a first viewing angle;

[0048] Figure 4 for Figure 3 A schematic diagram of a three-dimensional structure from a second viewing angle;

[0049] Figure 5This is the control schematic diagram of the pipeline robot.

[0050] In the figure:

[0051] 1. Gas pipeline;

[0052] 2. Pipeline installation auxiliary device;

[0053] 21. Pre-positioning assembly; 211. Pre-positioning plate; 212. First connecting column; 213. First electromagnet;

[0054] 22. Centering assembly; 221. Centering plate; 222. Second connecting column; 223. Second fixed magnet;

[0055] 23. Adjusting bolt;

[0056] 3. Pipeline robot;

[0057] 31. Fuselage;

[0058] 32. Crawling mechanism;

[0059] 321, first distance adjustment component; 3211, first motor; 3212, first hydraulic cylinder; 322, crawling component; 3221, crawling motor; 3222, crawling wheel;

[0060] 33. Cleaning agency;

[0061] 331, second distance adjustment component; 3311, second motor; 3312, second hydraulic pump; 3313, second hydraulic cylinder;

[0062] 332, cleaning component; 3321, cleaning motor; 3322, cleaning head; 3323, cleaning detection unit;

[0063] 34. Spraying mechanism; 341. Feeding pump; 342. Feeding pipe; 343. Spraying head;

[0064] 35. Controller;

[0065] 4. Central axis;

[0066] 5. Waste box. DETAILED DESCRIPTION

[0067] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific implementation disclosed below.

[0068] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0069] The present invention discloses a gas pipeline modification method using a pipeline installation auxiliary device. Figures 1 to 5 , which comprises the steps of:

[0070] Disassembly: Use the pipeline installation auxiliary device 2 (and a wrench, the pipeline installation auxiliary device 2 is used to ensure the coaxiality of two adjacent sections of the gas pipeline 1, and the wrench is used to remove the bolts connected by the flange) to disassemble the connection position of the gas pipeline 1 into multiple sections;

[0071] Inner wall treatment: using the pipeline robot 3 to clean the disassembled gas pipeline 1 section by section from the inside and spray a protective layer;

[0072] Installation, use the pipeline installation auxiliary device 2 (and a wrench, the pipeline installation auxiliary device 2 is used to ensure the coaxiality of two adjacent sections of the gas pipeline 1, and the wrench is used to remove the bolts connected by the flange) to connect the multiple sections of the gas pipeline 1 with the treated inner wall in sequence, and the pipeline installation auxiliary device 2 includes:

[0073] A pre-positioning component 21, the pre-positioning component 21 comprises a pre-positioning plate 211, a first connecting column 212 and a first electromagnet 213, the pre-positioning plate 211 is two and fixedly connected by the first connecting column 212, the pre-positioning plate 211 forms an arc with a central angle of ≤180° that matches the end of the gas pipeline 1, and the first electromagnet 213 is evenly arranged along the circumference of the pre-positioning plate 211;

[0074] The centering component 22 includes a centering plate 221, a second connecting column 222 and a second electromagnet 223. The centering plate 221 is two and fixedly connected by the second connecting column 222. The centering plate 221 forms an arc with a central angle of ≤180° that is compatible with the end of the gas pipeline 1. The second electromagnet 223 is evenly arranged along the circumference of the centering plate 221. The centering plate 221 is detachably connected to the pre-positioning plate 211.

[0075] During disassembly and installation, the pipeline installation auxiliary device 2 is used to synchronously clamp the two gas pipelines 1 to ensure the coaxiality of the two gas pipelines 1, thereby facilitating disassembly and installation and avoiding flange deformation, bolt shearing and instantaneous falling of the gas pipeline 1 during disassembly and installation;

[0076] The pipeline installation auxiliary device 2 ensures the coaxiality of the gas pipeline 1 by the following means:

[0077] First, use the pre-positioning assembly 21 to perform pre-positioning. First, buckle the inner side of the pre-positioning plate 211 to the outer wall of the gas pipeline 1, and the inner side of the first electromagnet 213 plate is in close contact with the outer wall of the gas pipeline 1 (the force is applied by the attraction provided by the first electromagnet 213), and the two pre-positioning plates 211 are respectively in close contact with the vicinity of the end of a gas pipeline 1, and the pre-positioning of the pre-positioning plate 211 is completed;

[0078] Then, use the centering assembly 22 for centering, buckle the centering plate 221 with the pre-positioning plate 211, and then use a detachable connector (not shown in the figure, a lock, etc. can be used) to fix it. After fixation, the first electromagnet 213 and the second electromagnet 223 enclose an internal space and maintain a small gap (such as 0.1-0.5mm) with the gas pipeline 1. Then the first electromagnet 213 and the second electromagnet 223 are started to provide a magnetic attraction force to attract the pre-positioning plate 211 and the centering plate 221 to the gas pipeline 1. The first connecting column 212 and the second connecting column 222 are slightly deformed by the tensile stress directed to the inside of the gas pipeline 1, thereby avoiding deformation or even damage of the gas pipeline 1 due to pressure.

[0079] It should be noted that there are multiple first connecting columns 212, second connecting columns 222 and bolts. The first connecting columns 212 are arranged at intervals relative to the bolts, and the second connecting columns 222 are arranged at intervals relative to the bolts to provide operating space for the wrench for twisting.

[0080] In addition, the first electromagnet 213 and the second electromagnet 223 are respectively installed on the pre-positioning plate 211 and the centering plate 221 in an adjustably radial direction (the first electromagnet 213 and the second electromagnet 223 are respectively installed with the pre-positioning plate 211 and the centering plate 221 through the adjusting bolt 23, and the adjusting bolt 23 is threadedly connected with the pre-positioning plate 211 and the centering plate 221 and then rotatably connected with the first electromagnet 213 and the second electromagnet 223). By adjusting the radial position of the first electromagnet 213 and the second electromagnet 223, the size of the internal space enclosed by the first electromagnet 213 and the second electromagnet 223 can be adjusted to adapt to gas pipelines 1 of different diameters, or the size of the magnetic attraction can be adjusted under the premise that the power of the two electromagnets is constant (it can be seen from the above that the size of the magnetic attraction corresponds to the degree of deformation of the first connecting column 212 and the second connecting column 222).

[0081] In addition, power supply wires for the first electromagnet 213 and the second electromagnet 223 are not shown.

[0082] See also Figure 3 and Figure 4 A specific structure of the pipeline robot 3 is that it includes a body 31, a cleaning mechanism 33, a crawling mechanism 32 and a spraying mechanism 34 which are arranged in sequence along the front (the crawling direction of the body 31 is the front) and rear directions of the body 31.

[0083] The crawling mechanism 32 is installed on the fuselage 31, and is used to provide a driving force for the fuselage 31 to crawl along the inner wall of the gas pipeline 1. Through the setting of the crawling mechanism 32, the fuselage 31 can crawl along the pipeline in both directions.

[0084] The cleaning mechanism 33 is installed on the body 31 and cleans the inner wall of the gas pipeline 1 as the body 31 crawls.

[0085] The spraying mechanism 34 is installed on the fuselage 31 and sprays an anti-corrosion layer on the inner wall of the gas pipeline 1 (to isolate it from contact with the air and avoid oxidation) as the fuselage 31 crawls. The cleaning mechanism 33, the crawling mechanism 32 and the spraying mechanism 34 are arranged in sequence along the crawling direction of the fuselage 31.

[0086] In addition, the pipeline robot 3 may also include a controller 35, see Figure 5 The cleaning mechanism 33 further includes a cleaning detection unit 3323 configured to detect the cleanliness of the gas pipeline 1; the controller 35 is configured as follows:

[0087] If the cleaning degree is qualified, the crawling mechanism 32 drives the body 31 to continue crawling and the spraying mechanism 34 continues spraying;

[0088] If the cleaning degree is unqualified, the spraying mechanism 34 stops, and the crawling mechanism 32 drives the fuselage 31 to retreat to a position where the cleaning degree is qualified.

[0089] By detecting in real time whether the cleaning degree is qualified, it is determined whether to continue crawling or retreat a certain distance (until the cleaning degree is qualified) and then continue cleaning. In this way, the cleaning degree can be automatically detected and crawled automatically to ensure the cleaning effect.

[0090] The inspection of whether the cleanliness level is qualified can be carried out through machine vision. Of course, considering the poor lighting inside the gas pipeline 1, auxiliary lighting can also be configured. It can also be carried out by detecting the roughness of the inner wall of the pipeline. The higher the cleanliness level, the more thorough the treatment of corrosion such as rust on the inner wall, the smoother the surface, and the lower the roughness. The roughness detection can be carried out by a probe, which is installed in the body 31 in a floating manner and can remain attached to the inner wall of the gas pipeline 1 as the body 31 crawls, so that the roughness of the inner wall of the pipeline is detected and converted into an electrical signal and output to the controller 35, which is compared with a set value pre-stored in the controller 35 to complete the judgment.

[0091] A specific structure of the crawling mechanism 32 is shown in FIG. Figure 3 and Figure 4 , which includes: a first distance adjustment component 321; crawling components 322, which are at least three in number and are evenly arranged on the circumference of the central axis 4, and each of the crawling components 322 is adjustable in distance from the central axis 4 through one of the first distance adjustment components 321.

[0092] The distance between the crawling assembly 322 and the central axis 4 is adjusted by the first distance adjustment assembly 321, thereby adjusting the lateral (perpendicular to the plane of the central axis 4) position of multiple crawling assemblies 322 to adapt to gas pipelines 1 with different inner diameters, thereby ensuring the scope of application of the embodiment of the present invention.

[0093] A structure of the first distance adjustment component 321, see Figure 3 and Figure 4 , which includes a first motor 3211, a first hydraulic pump, and a first hydraulic cylinder 3213. The first motor 3211 drives the first hydraulic pump to work so that the working end of the first hydraulic cylinder 3213 is extended and retracted, thereby adjusting the distance between the crawling assembly 322 and the central axis 4. The first motor 3211 drives the first hydraulic pump to work, and then drives the first hydraulic cylinder 3213 to work, thereby driving the working end (such as a piston) fixed to the first hydraulic cylinder 3213 to extend and retract. Of course, the embodiment of the present invention may also include a speed sensor or an acceleration sensor to detect the motion state of the pipeline robot 3. When the pipeline robot 3 crawls and stalls (falls due to insufficient extension of the crawling assembly 322 when crawling a vertical gas pipeline 1), the crawling assembly 322 can be driven to increase the lateral expansion degree to provide a greater pressure between the crawling assembly 322 and the inner wall of the gas pipeline 1, that is, to provide a greater crawling force, thereby avoiding falling.

[0094] A specific structure of the crawling assembly 322 is that it includes a crawling motor 3221 and a crawling wheel 3222, wherein the crawling motor 3221 is rotatably mounted on the working end of the first hydraulic cylinder 3213, the rotation axis of the crawling motor 3221 is perpendicular to the central axis 4, and the crawling wheel 3222 is sleeved on the outer edge of the crawling motor 3221. The crawling motor 3221 is connected to the controller 35 by signal, and the controller 35 controls the working state of the crawling motor 3221 (such as start and stop, forward and reverse rotation, and rotation speed, thereby controlling the overall working, stopping, crawling direction, and crawling speed of the crawling assembly 322).

[0095] A structure of the cleaning mechanism 33, see Figure 3 and Figure 4, which includes: a second distance adjustment component 331; a cleaning component 332, the number of which is at least one group, each group of the cleaning components is at least three and is evenly arranged on the circumference of the central axis 4, and each of the cleaning components 332 is adjustable in distance from the central axis 4 through one of the second distance adjustment components 331.

[0096] By setting the second distance adjustment component 331, the distance from the cleaning component 332 to the central axis 4 can be adjusted, thereby adjusting the pressure applied by the cleaning component 332 to the inner wall of the gas pipeline 1, that is, the cleaning force, thereby adjusting the size of the cleaning force, especially when used in conjunction with the aforementioned cleanliness detection component. When the cleaning degree is unqualified, the lateral extension distance of the cleaning component 332 is increased, thereby providing greater cleaning force and improving the cleaning effect.

[0097] A specific structure of the second distance adjustment component 331 is shown in Figure 3 and Figure 4 , which includes a second motor 3311, a second hydraulic pump 3312 and a second hydraulic cylinder 3313. The second motor 3311 drives the second hydraulic pump 3312 to operate, so that the working end of the second hydraulic cylinder 3313 is extended and retracted, thereby adjusting the distance between the cleaning component 332 and the central axis 4. The second motor 3311 drives the second hydraulic pump 3312 to operate, driving the working end of the second hydraulic cylinder 3313 to extend and retract, thereby driving the cleaning component 332 fixed to the working end of the second hydraulic cylinder 3313 to extend or retract laterally.

[0098] A specific structure of the cleaning assembly 332, see the figure, includes a cleaning motor 3321 and a cleaning head 3322, the housing of the cleaning motor 3321 is fixed to the working end of the second hydraulic cylinder 3313, the cleaning head 3322 is rotatably arranged under the drive of the cleaning motor 3321, and the rotation axis of the cleaning head 3322 is parallel to the central axis 4. The cleaning motor 3321 drives the cleaning head 3322 to rotate, and the cleaning motor 3321 is controlled by the controller 35 to adjust the working state.

[0099] Regarding the cleaning components 332, there are at least two groups (two groups are shown in the figure), and the at least two groups of cleaning components 332 are arranged in sequence along the central axis 4. At least two groups of cleaning components 332 and at least three crawling components 322 are arranged in sequence from top to bottom to form at least three contact positions, which is conducive to the crawling of the fuselage 31 as a whole.

[0100] A specific structure of the spraying mechanism 34 is shown in FIG. Figure 3 and Figure 4 ,include:

[0101] A feed pump 341 is connected to the controller 35 by signal and is disposed separately from the body 31;

[0102] A nozzle 343 is fixed to the body 31, and a discharge port of the nozzle 343 extends outward;

[0103] The feeding pipe 342 has a first end connected to the spray head 343 and a second end connected to a feeding pump 341 capable of providing high-pressure spray material.

[0104] The feed pump 341 is controlled by the controller 35 to adjust its working state. Since the feed pump 341 is set separately from the fuselage 31, when the controller 35 is set on the fuselage 31, the feed pump 341 can be connected to the controller 35 signal through wireless communication protocols such as Bluetooth and Lora. The feed pump 341 drives the spray paint to be sprayed out through the feed pipe 342 and the nozzle 343 in sequence. The feed pipe 342 can be a hose to increase the follow-up performance of the crawling of the fuselage 31. Various steel pipe imitation agents can be used for spraying, such as grease paint, raw lacquer paint, phenolic resin paint, epoxy resin paint, etc.

[0105] Finally, a waste box 5 fixed to the body 31 with an opening 51 facing upward is provided between the cleaning mechanism 33 and the crawling mechanism 32. The rust attached to the inner wall of the gas pipe 1 is scraped and brushed off by the cleaning mechanism 33 and enters the waste box 5 through the opening 51, which greatly reduces (very little rust will fall through the narrow gap between the waste box 5 and the inner wall of the gas pipe 1, and the degree of reduction can be controlled by the size of the gap, such as the gap is 1-5mm) the secondary pollution caused by the rust falling on the inner wall of the cleaned gas pipe 1, and also avoids falling on the crawling mechanism 32 and the spraying mechanism 34 to affect crawling and spraying, thereby ensuring the reliable operation of the embodiment of the present invention.

[0106] The basic principles and main features of the present invention and the advantages of the present invention are shown and described above. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention, and any figure marks in the claims should not be regarded as limiting the claims involved.

[0107] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A gas pipeline reconstruction method using a pipeline installation auxiliary device, characterized in that: Includes steps: Disassembly: Use pipeline installation auxiliary equipment to disassemble the connection position of the gas pipeline into multiple sections; Inner wall treatment: use pipeline robots to clean and spray protective layers on the dismantled gas pipeline section by section from the inside; Installation, using the pipeline installation auxiliary device to sequentially connect multiple sections of gas pipelines with treated inner walls, the pipeline installation auxiliary device includes: A pre-positioning assembly, the pre-positioning assembly comprising a pre-positioning plate, a first connecting column and a first electromagnet, the pre-positioning plates are two and fixedly connected by the first connecting column, the pre-positioning plate forms an arc that is adapted to the end of the gas pipeline and has a central angle of ≤180°, and the first electromagnet is evenly arranged along the circumference of the pre-positioning plate; A centering assembly, the centering assembly includes a centering plate, a second connecting column and a second electromagnet, the centering plate is two and fixedly connected by the second connecting column, the centering plate forms an arc that is compatible with the end of the gas pipeline and has a central angle of ≤180°, the second electromagnet is evenly arranged along the circumference of the centering plate, and the centering plate is detachably connected to the pre-positioning plate.

2. The gas pipeline reconstruction method using the pipeline installation auxiliary device according to claim 1 is characterized in that: The first electromagnet and the second electromagnet are respectively mounted on the pre-positioning plate and the centering plate in an adjustable manner along their respective radial directions.

3. The gas pipeline reconstruction method using the pipeline installation auxiliary device according to claim 1 or 2, characterized in that: The pipeline robot comprises: body; A crawling mechanism, installed on the fuselage, for providing a driving force for the fuselage to crawl along the inner wall of the gas pipeline; A cleaning mechanism is installed on the fuselage and cleans the inner wall of the gas pipeline as the fuselage crawls; A spraying mechanism is installed on the fuselage and sprays an anti-corrosion layer on the inner wall of the gas pipeline as the fuselage crawls. The cleaning mechanism, the crawling mechanism and the spraying mechanism are arranged in sequence along the crawling direction of the fuselage. A waste box fixed to the fuselage and opening upward is also provided between the cleaning mechanism and the crawling mechanism.

4. The gas pipeline reconstruction method using the pipeline installation auxiliary device according to claim 3 is characterized in that: The pipeline robot also includes a controller, wherein: The cleaning mechanism also includes a cleaning detection unit configured to detect the cleanliness of the gas pipeline; The controller is configured as follows: If the cleaning degree is qualified, the crawling mechanism drives the fuselage to continue crawling and the spraying mechanism continues spraying; If the cleaning degree is unqualified, the spraying mechanism stops and the crawling mechanism drives the body to retreat to a position where the cleaning degree is qualified.

5. The gas pipeline reconstruction method using the pipeline installation auxiliary device according to claim 4 is characterized in that: The crawling mechanism comprises: a first distance adjustment component; There are at least three crawling assemblies which are evenly arranged around the central axis, and each crawling assembly is adjustable in distance from the central axis through a first distance adjustment assembly.

6. The gas pipeline reconstruction method using the pipeline installation auxiliary device according to claim 5 is characterized in that: The first distance adjustment assembly includes a first motor, a first hydraulic pump, and a first hydraulic cylinder, wherein the first motor drives the first hydraulic pump to operate so that the working end of the first hydraulic cylinder is extended and retracted, thereby adjusting the distance between the crawling assembly and the central axis; The crawling assembly includes a crawling motor and a crawling wheel. The crawling motor is rotatably mounted on the working end of the first hydraulic cylinder. The rotation axis of the crawling motor is perpendicular to the central axis. The crawling wheel is sleeved on the outer edge of the crawling motor.

7. The gas pipeline reconstruction method using the pipeline installation auxiliary device according to claim 4 is characterized in that: The cleaning mechanism comprises: a second distance adjustment component; There are at least one group of cleaning components, each group of cleaning components has at least three components and is evenly arranged around the central axis, and each cleaning component is adjustable in distance to the central axis through a second distance adjustment component.

8. The gas pipeline reconstruction method using the pipeline installation auxiliary device according to claim 7 is characterized in that: The second distance adjustment assembly includes a second motor, a second hydraulic pump and a second hydraulic cylinder, wherein the second motor drives the second hydraulic pump to operate so that the working end of the second hydraulic cylinder is extended and retracted, thereby adjusting the distance between the cleaning assembly and the central axis; The cleaning assembly includes a cleaning motor and a cleaning head. The housing of the cleaning motor is fixed to the working end of the second hydraulic cylinder. The cleaning head is rotatably arranged under the drive of the cleaning motor, and the rotation axis of the cleaning head is parallel to the central axis.

9. The gas pipeline reconstruction method using the pipeline installation auxiliary device according to claim 7 is characterized in that: The cleaning components are in at least two groups, and the at least two groups of cleaning components are arranged in sequence along the central axis.

10. The gas pipeline reconstruction method using the pipeline installation auxiliary device according to claim 4, characterized in that: The spraying mechanism comprises: A feeding pump, connected to the controller signal and disposed separately from the body; A nozzle is fixed to the machine body, and a discharge port of the nozzle extends outward; A feeding pipe has a first end connected to the spray head and a second end connected to a feeding pump capable of providing high-pressure spray material.

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