Pipeline welded junction anti-corrosion construction device and construction method thereof
By designing the anti-corrosion construction device of the pipe weld, the rotation paint and compaction of the brush roller are achieved by using the annular bracket and the brush roller bracket, the problem of poor construction effect and efficiency in the prior art is solved, and the quality and efficiency of the anti-corrosion treatment of the pipe weld is improved.
Patent Information
- Application Number
- CN202510663911.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-22
- Publication Date
- 2025-08-15
AI Technical Summary
In the prior art, during the anti-corrosion construction process of pipeline welds, the construction effect and efficiency are difficult to ensure, and it mainly depends on the experience of construction personnel, resulting in uneven coating and compaction.
A pipe welded anti-corrosion construction device is designed, including an annular bracket and a brush roller bracket. A brush roller and a paint storage tank are installed on the brush roller bracket, which can walk along the axial direction of the pipe, and the brush roller is driven to rotate around the circumference of the pipe through the brush roller bracket, achieving uniform painting and compaction of the heat shrink sleeve.
The construction efficiency and quality of anti-corrosion treatment of pipeline welds is improved, ensuring uniform coating of primer and uniform compaction of heat shrink sleeves is ensured, and reliance on construction personnel's experience is reduced.
Smart Images
Figure CN120479673A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of pipeline construction, and in particular to a pipeline weld anti-corrosion construction device. Background Art
[0002] After welding, the pipeline needs to continue to anti-corrosion treatment on the weld joint. Currently, the more common method is to use an open heat shrink sleeve for anti-corrosion treatment. During the treatment process, the weld joint generally needs to be polished, primed, and installed with a heat shrink sleeve. The heat shrink sleeve is set around the weld joint and connected through a fixed plate. It is then heated and shrunk by a torch and wrapped around the weld joint. The heat shrink sleeve is then further compacted at the weld joint using a pressure roller. Finally, the remaining primer is applied to the connection between the fixed plate and the heat shrink sleeve to prevent the fixed plate from warping and complete the anti-corrosion treatment.
[0003] During the construction process, the pipeline is generally installed horizontally at the construction site. Construction workers need to use a brush roller to paint and roll the welds in a surrounding and full-coverage manner. Whether the primer is evenly applied and the heat shrink sleeve is evenly compacted depends entirely on the construction workers' experience. Construction results and efficiency are difficult to guarantee. Summary of the Invention
[0004] The present invention aims at the problems existing in the pipeline weld anti-corrosion construction treatment process in the prior art and provides a pipeline weld anti-corrosion construction device and a construction method thereof.
[0005] In order to solve the above technical problems, the present invention is solved by the following technical solutions: The pipeline weld anti-corrosion construction device includes a device body that can move along the pipeline outer wall along the pipeline axial direction. The device body includes two annular brackets that are connected to each other and can be supported on the pipeline outer wall. A rotatable brush roller bracket is connected between the two annular brackets. The brush roller bracket is equipped with a brush roller that can be fitted at the pipeline weld and a paint storage tank for supplying primer to the brush roller. When the brush roller bracket rotates, it can drive the brush roller to rotate around the pipeline circumference.
[0006] Preferably, the annular support is provided with two symmetrically arranged support frames, each comprising a support plate disposed inside the annular support, the support plate being arranged along the radial direction of the pipeline, and having rollers mounted on both ends of the support plate along the longitudinal direction thereof that can move along the axial direction of the pipeline. The provision of the rollers enables the device body to move smoothly on the pipeline.
[0007] Preferably, a guide rod and a roller mounting shaft are further installed on the support plate, the guide rod passes through the annular bracket and slides with the annular bracket, the roller mounting shaft passes through the support plate and slides with the support plate, and the end of the roller mounting shaft is provided with a roller mounting seat for mounting the roller, and the roller mounting shaft is provided with a roller spring for driving the roller mounting seat to move toward the outer wall of the pipe; An adjustment screw, axially parallel to the guide rod, is threaded onto the annular bracket. This screw presses the support plate against the pipe's outer wall, securing the device's main body against the pipe's weld, ensuring a secure position during subsequent painting.
[0008] Preferably, the brush roller bracket includes a ring-shaped bracket body and two brush roller mounting plates fixed to the bracket body, a brush roller mounting seat is installed between the two brush roller mounting plates, the paint storage tank is installed on the brush roller mounting seat, and the bottom of the paint storage tank is connected to a brush roller mounting shell, and the brush roller mounting shell is in the shape of a long shell with one end open and the open end facing the outer wall of the pipe. The brush roller is installed horizontally on the brush roller installation housing and the axial direction of the brush roller is consistent with the length direction of the brush roller installation housing. A paint inlet is formed at the upper end of the paint storage tank and a filling cover is provided at the paint inlet. A paint flow channel is provided between the bottom of the paint storage tank and the brush roller mounting shell. The paint flow channel includes a paint outlet hole provided on the bottom surface of the paint storage tank and a paint outlet extension cavity provided on the inner wall of the brush roller mounting shell and extending in length to both ends of the brush roller. The paint outlet hole can connect the paint storage tank and the paint outlet extension cavity.
[0009] The arrangement of the paint storage tank and the brush roller mounting housing enables the primer to be better delivered to the brush roller, thereby ensuring smooth progress of the brush roller painting process.
[0010] Preferably, the brush roller mounting base is provided with a paint tank mounting slot, within which the paint tank can move radially along the pipe. A paint tank compression spring is provided within the slot to drive the paint tank toward the outer wall of the pipe. The paint tank compression spring ensures that the brush roller remains in contact with the outer wall of the pipe weld during rotation, ensuring uniform paint application.
[0011] Preferably, a piston assembly is provided within the paint reservoir. The piston assembly comprises a piston rod and a piston. The piston is located at the end of the piston rod that is within the paint reservoir. The end of the piston rod, distal to the piston, extends beyond the potting cap and is provided with a toggle block. The provision of the piston assembly ensures that primer flows smoothly onto the brush roller, ensuring sufficient primer is applied to the brush roller and ensuring paint quality.
[0012] Preferably, the brush roller mounting seat is provided with connecting assemblies at both ends facing the two brush roller mounting plates, the connecting assemblies comprising connecting holes provided on the brush roller mounting plates and connecting pins provided on the brush roller mounting seat and capable of being retracted into the brush roller mounting seat. The brush roller mounting seat is further provided with a push spring for pushing the connecting pin toward the connecting hole and extending outward, and a toggle plate provided on the connecting pin for toggling the connecting pin into the brush roller mounting seat. The installation form of the brush roller mounting seat on the brush roller bracket makes it easy to install and remove, and can facilitate cleaning or replacement of the brush roller.
[0013] Preferably, the ends of the two annular brackets facing the brush roller bracket are provided with support steps with an L-shaped cross section, and the brush roller bracket is rotatably arranged on the support steps; The support step comprises a vertically mounted annular plate with a semicircular retaining groove. The end face of the connecting pin extending from the connecting hole is circular and retains within the retaining groove. The brush roller mounting bracket is secured to the annular bracket by the connecting pin, preventing the brush roller bracket from rotating during movement, ensuring stability during movement.
[0014] Preferably, both annular supports are provided with connecting seats, which are connected by a transversely arranged connecting screw. A pull lug is mounted on the outer wall of the paint storage tank, which is located outside the brush roller mounting seat. One end of the pull lug is connected to the outer wall of the paint storage tank, and the other end extends toward the connecting screw. The provision of the pull lug enables the paint storage tank to be pulled up when the device body is moved, thereby allowing the brush roller to be separated from the outer wall of the pipe during movement of the device body, thereby facilitating movement of the device body.
[0015] The pipeline weld anti-corrosion construction method is implemented using the aforementioned pipeline weld anti-corrosion construction device, and specifically includes the following steps: Step S1, grinding the pipeline weld; Step S2, installing the device body at the pipe weld so that the brush roller fits the pipe weld; Step S3, adding primer into the paint storage tank; Step S4: The primer is delivered to the brush roller, and the brush roller bracket is rotated to drive the brush roller to rotate circumferentially around the pipe weld, thereby applying the primer to the pipe weld A; Step S5: After the painting is completed, the device body is moved on the pipeline to the pipeline weld B adjacent to the pipeline weld A to paint the weld; at the same time, the construction personnel install a heat shrink sleeve on the pipeline weld A that has been painted with primer; Step S6: After the heat shrink sleeve is installed at the pipe weld A and the primer at the pipe weld B is also applied, the device body is moved back to the pipe weld A where the heat shrink sleeve has been installed, and the heat shrink sleeve and the fixing plate are compacted by the brush roller and the primer remaining thereon, thereby completing the anti-corrosion treatment of the pipe weld A; Step S7: Install the heat shrink sleeve at the pipe weld B while compacting the heat shrink sleeve and the fixing plate at the pipe weld A. Then move the device body to the pipe weld B again to compact the heat shrink sleeve and the fixing plate to complete the anti-corrosion treatment of the pipe weld B.
[0016] The present invention has significant technical effects due to the adoption of the above technical solutions: The present invention uses a construction device to apply primer to the pipeline weld and compact the heat shrink sleeve, which can effectively improve the construction efficiency and quality of the anti-corrosion treatment of the entire pipeline weld. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a structural diagram of embodiment 1 of the present invention.
[0018] Figure 2 yes Figure 1 Half-section diagram of .
[0019] Figure 3 yes Figure 2 A partial enlarged view of part A.
[0020] Figure 4 yes Figure 1 Schematic diagram of the internal structure.
[0021] Figure 5 yes Figure 4 Schematic diagram of the structure of the middle support frame.
[0022] Figure 6 yes Figure 1 Schematic diagram of the structure of the middle brush roller mounting seat.
[0023] Figure 7 yes Figure 6 Half-section diagram of . DETAILED DESCRIPTION
[0024] The present invention is further described in detail below with reference to the accompanying drawings and embodiments.
[0025] Example 1 This embodiment provides a pipeline weld anti-corrosion construction device, such as Figure 1-Figure 7 As shown, it includes a device body 2 that can move along the axial direction of the pipeline 1 on the outer wall of the pipeline 1. The device body 2 includes two annular supports 201 that are connected to each other and can be supported on the outer wall of the pipeline 1.
[0026] Specifically, the two annular supports 201 are each provided with a connecting seat 234, which is connected to each other via a transversely arranged connecting screw 235 and a connecting guide rod 209. When connecting, the two connecting seats 234 can be pre-fixed by connecting the guide rod 209 first, and then fixedly connected by the connecting screw 235 to achieve a fixed connection between the two annular supports 201. In order to ensure the stability of the connection between the two annular supports, connecting seats 234 are provided on opposite sides of the annular supports 201, so that the two annular supports 201 are connected to each other at the top and bottom, ensuring their stability on the pipeline 1.
[0027] A rotatable brush roller bracket 205 is connected between the two annular brackets 201. The annular bracket 201 and the brush roller bracket 205 are both formed by docking two semicircular ring brackets, and the ends of the two annular brackets 201 facing the brush roller bracket 205 are provided with support steps 231 with an L-shaped cross-section. The brush roller bracket 205 is rotatably set on the support steps 231, and the two ends of the brush roller bracket 205 are respectively overlapped on the support steps 231. In order to ensure the smooth rotation of the brush roller bracket 205, an annular slide rail can also be provided between the support steps 231 and the brush roller bracket 205 to achieve smooth rotation of the brush roller bracket 205.
[0028] The brush roller bracket 205 is equipped with a brush roller 203 that can be attached to the weld of the pipe 1 and a paint storage tank 204 for supplying primer to the brush roller 203. When the brush roller bracket 205 rotates, it can drive the brush roller 203 to rotate circumferentially around the pipe 1, and then after the brush roller bracket 205 rotates one circle, it drives the brush roller 203 to rotate one circle around the weld of the pipe 1. Compared with repeatedly brushing the weld of the pipe 1 manually, this method can be more uniform and efficient, and it is also more convenient for brushing the weld on the lower side of the pipe 1.
[0029] Specifically, in this embodiment, the brush roller bracket 205 includes a ring-shaped bracket body 214 and two brush roller mounting plates 215 fixed to the bracket body 214. A brush roller mounting seat 216 is installed between the two brush roller mounting plates 215. The paint storage tank 204 is installed on the brush roller mounting seat 216. The brush roller mounting seat 216 is provided with a paint storage tank mounting groove 222. The lower part of the paint storage tank 204 extends into the paint storage tank mounting groove 222, and the upper end extends out of the paint storage tank mounting groove 222. The paint tank 204 can move radially along the pipe 1 in the paint tank mounting groove 222. A paint tank compression spring 223 is provided in the paint tank mounting groove 222 for driving the paint tank 204 to move toward the outer wall of the pipe 1. The paint tank compression spring 223 can achieve the compression force of the paint tank 204, thereby ensuring that the brush roller 203 can fit tightly on the weld of the pipe 1 during the painting process.
[0030] A brush roller mounting housing 217 is connected to the bottom of the paint storage tank 204. The brush roller mounting housing 217 is in the shape of a long shell with one end open, and the open end faces the outer wall of the pipe 1. The brush roller 203 is horizontally mounted on the brush roller mounting housing 217, and the axial direction of the brush roller 203 is consistent with the length direction of the brush roller mounting housing 217. The brush roller 203 can rotate freely in the brush roller mounting housing 217. The diameter of the brush roller 203 is greater than the depth of the brush roller mounting housing 217, thereby allowing the outer side of the brush roller 203 to extend out of the brush roller mounting housing 217 and fit onto the outer wall of the pipe 1. A paint inlet is formed at the upper end of the paint storage tank 204 and a filling cover 218 is provided at the paint inlet. The filling cover 218 is connected to the paint inlet by a threaded manner, which is convenient to open and has better sealing. A paint flow channel 219 is provided between the bottom of the paint storage tank 204 and the brush roller mounting shell 217. The paint flow channel 219 includes a paint outlet hole 220 provided on the bottom surface of the paint storage tank 204 and a paint outlet extension cavity 221 provided on the inner wall of the brush roller mounting shell 217 and extending in length to both ends of the brush roller 203. The paint outlet hole 220 can connect the paint storage tank 204 and the paint outlet extension cavity 221.
[0031] The paint discharging extension cavity 221 is composed of a long groove formed by the inner wall of the brush roller mounting shell 217 and the outer wall of the brush roller 203 that can cover the open end of the long groove. The primer in the paint storage tank 204 flows from the paint discharging hole 220 to the paint discharging extension cavity 221 and contacts the outer surface of the brush roller 203. In the initial state, the brush roller 203 is in a non-rotating state. The primer will gradually disperse from the center position of the brush roller 203 to the two ends of the brush roller 203 in the paint discharging extension cavity 221 and gradually penetrate into the outer surface of the brush roller 203. Inside the bristles, during the painting process, the brush roller 203 rotates on itself on the one hand, and revolves around the pipe 1 on the other hand, so that the primer in the paint extension cavity 221 is gradually brushed onto the weld of the pipe 1. The painting process can make the brush roller bracket 205 rotate 2-3 circles until the primer in the paint storage tank 204 is basically brushed out, so as to ensure the uniformity and thickness of the paint. At the same time, the setting of the paint extension cavity 221 can also realize the dispersion of the primer on the brush roller 203, so as to ensure the painting range at the weld of the pipe 1.
[0032] In this embodiment, in order to ensure that the primer in the paint storage tank 204 flows smoothly to the brush roller 203, a piston assembly is provided in the paint storage tank 204. The piston assembly includes a piston rod 224 and a piston 225. The piston 225 is arranged at the end of the piston rod 224 in the paint storage tank 204, and the end of the piston rod 224 away from the piston 225 extends out of the filling cover 218 and is provided with a toggle block 226.
[0033] During the painting process, the construction worker can directly apply force to the brush roller mounting seat 216 when rotating the brush roller bracket 205 to rotate the brush roller bracket 205 and at the same time slowly press the toggle block 226 with his fingers, so that the piston 225 pushes the primer through the paint outlet hole 220 to the paint outlet extension cavity 221, and then is brushed onto the weld of the pipe 1 under the action of the brush roller 203.
[0034] In this embodiment, in order to facilitate the installation and movement of the support frame 206 on the pipeline 1, two symmetrically arranged support frames 206 are provided on the annular bracket 201. The support frame 206 includes a support plate 207 arranged on the inner side of the annular bracket 201. The length direction of the support plate 207 is arranged along the radial direction of the pipeline 1, and rollers 208 that can move axially along the pipeline 1 are installed at both ends of the length direction of the support plate 207.
[0035] A guide rod 209 and a roller mounting shaft 210 are also installed on the support plate 207. The guide rod 209 passes through the annular bracket 201 and slides with the annular bracket 201. The roller mounting shaft 210 passes through the support plate 207 and slides with the support plate 207. The end of the roller mounting shaft 210 is provided with a roller mounting seat 211 for mounting the roller 208. The roller mounting shaft 210 is provided with a roller spring 212 for driving the roller mounting seat 211 to move toward the outer wall of the pipe 1; an adjusting screw 213 axially parallel to the guide rod 209 is threadedly connected to the annular bracket 201, and the adjusting screw 213 can press the support plate 207 against the outer wall of the pipe 1.
[0036] In addition, a pull ear 236 is installed on the outer wall of the paint storage tank 204 outside the brush roller mounting base 216. One end of the pull ear 236 is connected to the outer wall of the paint storage tank 204, and the other end extends toward the connecting screw 235.
[0037] When painting, the support plate 207 is pressed against the outer wall of the pipe 1 under the action of the adjusting screw 213 to achieve relative fixation of the position between the annular bracket 201 and the weld of the pipe 1, which facilitates the stable progress of the painting process.
[0038] After the paint is finished, it is necessary to further wrap the heat shrink sleeve on this position. At this time, the adjusting screw 213 can be rotated to release the pressure on the support plate 207. Then, the support plate 207 will be separated from the outer wall of the pipe 1 under the action of the roller spring 212, and the roller 208 will contact the outer wall of the pipe 1. At this time, the annular bracket 201 is in a walking preparation state. Then the construction worker can apply force to the connecting screw 235 at the connecting seat 234, and pull the pull ear 236 upward with his finger, so that the paint storage tank 204 drives the brush roller 203 to separate from the outer wall of the pipe 1. At this time, the entire device body 2 is in a walking preparation state, and the construction worker can now more conveniently move the entire device body 2 to the next pipe 1 weld for the next step of construction. In order to ensure that the center position of the brush roller 203 can be better aligned with the pipe 1 weld, the brush roller bracket 205 can be made of a transparent acrylic plate, so that the construction worker can directly observe the pipe 1 weld position and the subsequent painting situation.
[0039] In order to facilitate cleaning or replacement of the brush roller 203, the brush roller 203 in this embodiment is detachably mounted on the brush roller bracket 205. The specific structure is as follows: The brush roller mounting seat 216 is provided with connecting components at both ends facing the two brush roller mounting plates 215. The connecting components include a connecting hole 227 arranged on the brush roller mounting plate 215 and a connecting pin 228 arranged on the brush roller mounting seat 216 and capable of being retracted into the brush roller mounting seat 216. The brush roller mounting seat 216 is also provided with a pushing spring 229 for pushing the connecting pin 228 to extend toward the connecting hole 227 and a toggle plate 230 installed on the connecting pin 228 for toggling the connecting pin 228 to retract the brush roller mounting seat 216.
[0040] During the installation process, the construction workers operate the toggle plate 230 to align the connecting pin 228 with the connecting hole 227, and then the connecting pin 228 is inserted into the connecting hole 227 under the action of the push spring 229. The disassembly process is similar. When the connecting pin 228 is withdrawn from the connecting hole 227, the entire brush roller mounting seat 216 and the paint storage tank 204, brush roller 203, etc. thereon can be removed from the inside of the brush roller bracket 205, so that the brush roller 203 can be removed for cleaning or replacement. The operation is quick and convenient.
[0041] In addition, in order to ensure that the brush roller bracket 205 does not rotate when the device body 2 is moving, a brush roller bracket 205 limiting mechanism is provided, that is, a limiting groove 233 is provided on the annular bracket 201. Specifically: The supporting step 231 includes an annular plate 232 vertically arranged on the plate surface, and a semicircular limiting groove 233 is provided on the annular plate 232. The end face of the connecting pin 228 extending out of the connecting hole 227 is constructed in a circular arc surface and can be stuck in the limiting groove 233. When the end of the connecting pin 228 is stuck in the limiting groove 233, the brush roller bracket 205 cannot rotate freely, which makes it convenient for construction personnel to walk on the device body 2; in addition, the semicircular structure on the limiting groove 233 and the connecting pin 228 enables it to exit the limiting groove 233 under the action of external force, thereby ensuring the normal progress of the painting process. During the design process, in order to make the rotation of the brush roller bracket 205 more stable, an annular shallow groove corresponding to the limiting groove 233 can also be set on the annular plate 232. The depth of the limiting groove 233 is greater than the depth of the annular shallow groove. When the brush roller bracket 205 rotates, the end of the connecting pin 228 slides in the annular shallow groove. When it rotates into the limiting groove 233, it can be limited by the limiting groove 233. The limiting groove 233 is set on the upper side of the device body 2, which is convenient for construction personnel to operate the brush roller mounting seat 216.
[0042] Example 2 This embodiment provides a pipeline weld anti-corrosion construction method, which is implemented using the pipeline weld anti-corrosion construction device in Example 1, and specifically includes the following steps: Step S1, grinding the weld of pipeline 1; Step S2, installing the device body 2 at the weld of the pipe 1 so that the brush roller 203 fits the weld of the pipe 1; Step S3: adding primer into the paint storage tank 204; Step S4: The primer is delivered to the brush roller 203, and the brush roller bracket 205 is rotated to drive the brush roller 203 to rotate circumferentially around the weld of the pipe 1, thereby applying the primer to the weld A of the pipe 1; Step S5: After the painting is completed, the device body 2 is moved on the pipe 1 to the pipe 1 weld B adjacent to the pipe 1 weld A, new primer is first added to the paint storage tank 204, and then the pipe 1 weld B is painted; at the same time, the construction personnel install a heat shrink sleeve on the pipe 1 weld A that has been painted with primer; Step S6: After the heat shrink sleeve is installed at the weld A of the pipe 1 and the primer is applied to the weld B of the pipe 1, the device body 2 is moved back to the weld A of the pipe 1 where the heat shrink sleeve has been installed. The heat shrink sleeve and the fixing plate are compacted by the brush roller 203 and the primer remaining thereon (mainly the primer in the paint outlet extension cavity 221 and on the brush bristles), thereby completing the anti-corrosion treatment of the weld A of the pipe 1. Step S7: Install the heat shrink sleeve at the weld joint B of pipe 1 while compacting the heat shrink sleeve and the fixing plate at the weld joint A of pipe 1. Then move the device body 2 to the weld joint B of pipe 1 again to compact the heat shrink sleeve and the fixing plate, completing the anti-corrosion treatment of the weld joint B of pipe 1.
[0043] This embodiment can realize the synchronous construction of the welds of two adjacent pipelines 1 and fully utilize the construction interval time during the construction of the two welds, thereby having high construction efficiency.
[0044] In addition, during the entire pipeline 1 construction process, there is no need to remove the device body 2 from the pipeline 1, but the construction of the next pipeline 1 weld can be continued, which is well suitable for the anti-corrosion construction of a long pipeline 1 spliced together with multiple pipelines 1.
[0045] It is easy to understand that those skilled in the art can combine, split, reorganize, etc. the embodiments of the present application based on one or several embodiments provided in the present application to obtain other embodiments, and these embodiments do not exceed the scope of protection of the present application.
[0046] In short, the above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made according to the scope of the patent application of the present invention should fall within the scope of the patent of the present invention.
Claims
1. Pipeline weld anti-corrosion construction device, characterized by: The invention comprises a device body (2) capable of moving along the axial direction of the pipeline (1) on the outer wall of the pipeline (1), the device body (2) comprising two annular brackets (201) connected to each other and capable of being supported on the outer wall of the pipeline (1), a rotatable brush roller bracket (205) being connected between the two annular brackets (201), a brush roller (203) capable of being attached to the weld of the pipeline (1) and a paint storage tank (204) for supplying primer to the brush roller (203) being mounted on the brush roller bracket (205), and the brush roller bracket (205) being capable of driving the brush roller (203) to rotate circumferentially around the pipeline (1) when the brush roller bracket (205) rotates.
2. The pipeline weld anti-corrosion construction device according to claim 1, characterized in that: Two symmetrically arranged support frames (206) are provided on the annular support (201), and the support frames (206) include a support plate (207) arranged inside the annular support (201), the support plate (207) being arranged along the radial direction of the pipeline (1) in its length direction, and rollers (208) capable of moving along the axial direction of the pipeline (1) are installed at both ends of the support plate (207) in its length direction.
3. The pipeline weld anti-corrosion construction device according to claim 2, characterized in that: A guide rod (209) and a roller mounting shaft (210) are also mounted on the support plate (207). The guide rod (209) passes through the annular bracket (201) and is in sliding engagement with the annular bracket (201). The roller mounting shaft (210) passes through the support plate (207) and is in sliding engagement with the support plate (207). A roller mounting seat (211) for mounting the roller (208) is provided at the end of the roller mounting shaft (210). A roller spring (212) for driving the roller mounting seat (211) to move toward the outer wall of the pipe (1) is provided on the roller mounting shaft (210). An adjusting screw (213) is threadedly connected to the annular bracket (201) and is arranged axially parallel to the guide rod (209). The adjusting screw (213) can press the support plate (207) against the outer wall of the pipe (1).
4. The pipeline weld anti-corrosion construction device according to claim 1, characterized in that: The brush roller bracket (205) comprises a ring-shaped bracket body (214) and two brush roller mounting plates (215) fixed to the bracket body (214) and arranged opposite to each other. A brush roller mounting seat (216) is installed between the two brush roller mounting plates (215). The paint storage tank (204) is installed on the brush roller mounting seat (216). The bottom of the paint storage tank (204) is connected to a brush roller mounting shell (217). The brush roller mounting shell (217) is in the shape of a long shell with one end open, and the open end faces the outer wall of the pipe (1). The brush roller (203) is transversely mounted on the brush roller mounting housing (217), and the axial direction of the brush roller (203) is consistent with the length direction of the brush roller mounting housing (217). A paint inlet is formed at the upper end of the paint storage tank (204) and a filling cover (218) is provided at the paint inlet. A paint passage (219) is provided between the bottom of the paint storage tank (204) and the brush roller mounting housing (217). The paint passage (219) includes a paint outlet hole (220) provided on the bottom surface of the paint storage tank (204) and a paint outlet extension cavity (221) provided on the inner wall of the brush roller mounting housing (217) and extending in a length direction to both ends of the brush roller (203). The paint outlet hole (220) can communicate with the paint storage tank (204) and the paint outlet extension cavity (221).
5. The pipeline weld anti-corrosion construction device according to claim 4, characterized in that: A paint tank mounting groove (222) is provided on the brush roller mounting seat (216), and the paint tank (204) can move radially along the pipeline (1) in the paint tank mounting groove (222). A paint tank pressing spring (223) for driving the paint tank (204) to move toward the outer wall of the pipeline (1) is provided in the paint tank mounting groove (222).
6. The pipeline weld anti-corrosion construction device according to claim 4, characterized in that: A piston assembly is provided in the paint storage tank (204), the piston assembly comprising a piston rod (224) and a piston (225), the piston (225) being provided at the end of the piston rod (224) located in the paint storage tank (204), and the end of the piston rod (224) away from the piston (225) extending out of the filling cover (218) and provided with a toggle block (226).
7. The pipeline weld anti-corrosion construction device according to claim 4, characterized in that: Both ends of the brush roller mounting seat (216) facing the two brush roller mounting plates (215) are provided with connecting assemblies, the connecting assemblies comprising connecting holes (227) provided on the brush roller mounting plates (215) and connecting pins (228) provided on the brush roller mounting seat (216) and capable of being retracted into the brush roller mounting seat (216), the brush roller mounting seat (216) also being provided with a pushing spring (229) for pushing the connecting pin (228) to extend toward the connecting hole (227), and a toggling plate (230) provided on the connecting pin (228) for toggling the connecting pin (228) to retract the brush roller mounting seat (216).
8. The pipeline weld anti-corrosion construction device according to claim 7, characterized in that: The ends of the two annular supports (201) facing the brush roller support (205) are provided with support steps (231) with an L-shaped cross section, and the brush roller support (205) is rotatably arranged on the support steps (231); The supporting step (231) comprises an annular plate (232) vertically arranged on the plate surface. A semicircular arc-shaped limiting groove (233) is provided on the annular plate (232). The end surface of the connecting pin (228) extending out of the connecting hole (227) is in the form of an arc surface and can be stuck in the limiting groove (233).
9. The pipeline weld anti-corrosion construction device according to claim 4, characterized in that: The two annular supports (201) are each provided with a connecting seat (234), and the connecting seats (234) are connected via a transversely arranged connecting screw (235). A pull ear (236) is installed on the outer wall of the paint storage tank (204) outside the brush roller mounting seat (216), and one end of the pull ear (236) is connected to the outer wall of the paint storage tank (204), and the other end extends toward the connecting screw (235).
10. The pipeline weld anti-corrosion construction method is characterized by: The method is implemented by using the pipeline weld anti-corrosion construction device according to claim 1, and specifically comprises the following steps: Step S1, grinding the weld of the pipeline (1); Step S2, installing the device body (2) at the weld of the pipeline (1) so that the brush roller (203) fits the weld of the pipeline (1); Step S3, adding primer into the paint storage tank (204); Step S4: The primer is conveyed to the brush roller (203), and the brush roller support (205) is rotated to drive the brush roller (203) to rotate circumferentially around the weld of the pipeline (1), thereby applying the primer to the weld A of the pipeline (1); Step S5: After the painting is completed, the device body (2) is moved on the pipe (1) to the pipe (1) weld B adjacent to the pipe (1) weld A to paint the weld; at the same time, the construction personnel install a heat shrink sleeve on the pipe (1) weld A that has been painted with primer; Step S6: After the heat shrink sleeve is installed at the weld joint A of the pipeline (1), the primer at the weld joint B of the pipeline (1) is also applied, and the device body (2) is moved back to the weld joint A of the pipeline (1) where the heat shrink sleeve has been installed. The heat shrink sleeve and the fixing plate are compacted by the brush roller (203) and the primer remaining thereon, thereby completing the anti-corrosion treatment of the weld joint A of the pipeline (1); Step S7: Install the heat shrink sleeve at the weld joint B of the pipeline (1) while compacting the heat shrink sleeve and the fixing plate at the weld joint A of the pipeline (1). Then, move the device body (2) again to the weld joint B of the pipeline (1) to compact the heat shrink sleeve and the fixing plate, thereby completing the anti-corrosion treatment of the weld joint B of the pipeline (1).