Robot for corrosion prevention of inner wall of pipeline welding seam

Abstract

The utility model provides a robot for corrosion prevention of the inner wall of a pipeline weld joint, which comprises a connecting cylinder, a connecting rod and a connecting rod, the conveying pipe is communicated with the cavity and external feeding and pressurizing equipment, and the external feeding and pressurizing equipment conveys the anticorrosive paint into the cavity through the conveying pipe; the atomizing nozzle is arranged on the outer surface of the connecting cylinder, and the atomizing nozzle is communicated with the cavity; and the walking mechanism is arranged on the outer surface of the connecting cylinder, and the walking mechanism is used for walking on the inner wall of the pipeline. According to the robot for corrosion prevention of the inner wall of the pipeline weld joint, the weld joint of the inner wall of a small-caliber pipeline is conveniently sprayed with anti-corrosion paint, and the weld joint of the inner wall of the pipeline is prevented from being corroded due to the fact that the anti-corrosion paint is damaged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pipeline anticorrosion, and particularly to a robot for anticorrosion of an inner wall of a pipeline weld. BACKGROUND

[0002] A pipeline is a device for conveying gas, liquid or fluid with particles, which is connected by pipes, pipe connectors and valves, and is widely used in water supply, drainage, heating, coal gas supply, long-distance transportation of oil and natural gas, irrigation, hydraulic engineering and various industrial devices. A pipeline is generally provided with an anticorrosion coating, which is used to avoid chemical corrosion of the pipeline itself, protect the pipeline from damage, and reduce the frictional resistance inside the pipeline.

[0003] However, the pipeline is currently connected by welding technology, and the heat generated during welding will be transferred to the anticorrosion coating, causing the coating to melt, vaporize or burn, thereby damaging the coating. The present inventors have found in the process of implementing the present application that after the original anticorrosion coating of the pipeline is damaged, the inner wall of the pipeline weld needs to be recoated, but when the diameter of the pipeline is small, workers cannot enter the inside of the pipeline for recoating. SUMMARY

[0004] The present application provides a robot for anticorrosion of an inner wall of a pipeline weld to solve the problems in the related art, and the technical solution is as follows:

[0005] The present application provides a robot for anticorrosion of an inner wall of a pipeline weld, which comprises:

[0006] The adapter cylinder has a cavity inside;

[0007] The delivery pipe is in communication with the cavity and an external material supply and pressurization device, and the external material supply and pressurization device delivers the anticorrosion coating into the cavity through the delivery pipe;

[0008] The atomizing nozzle is arranged on the outer surface of the adapter cylinder and is in communication with the cavity;

[0009] The walking mechanism is arranged on the outer surface of the adapter cylinder and is used for walking on the inner wall of the pipeline.

[0010] In an embodiment, the walking mechanism comprises a fixing ring, a fixing plate and a walking assembly, the fixing ring is sleeved on the outer surface of the adapter cylinder, the fixing plate is fixed on the fixing ring, and the walking assembly is mounted on the fixing plate.

[0011] In one embodiment, the walking assembly comprises a telescopic rod, an elastic member and a walking wheel, one end of the telescopic rod close to the fixing ring is fixed on the fixing plate, the walking wheel is installed on the end of the telescopic rod away from the fixing ring, and the elastic member is sleeved on the telescopic rod, and two ends of the elastic member are respectively abutted against the fixing plate and the walking wheel.

[0012] In one embodiment, the telescopic rod comprises a first telescopic segment and a second telescopic segment, one end of the first telescopic segment close to the fixing ring is fixed on the fixing plate, one end of the second telescopic segment close to the fixing ring is located inside the first telescopic segment, the second telescopic segment can be telescopically extended in the first telescopic segment, and the walking wheel is installed on the end of the second telescopic segment away from the fixing ring.

[0013] In one embodiment, a fixing seat is installed on the end of the telescopic rod away from the fixing ring, the walking wheel is installed on the fixing seat, the walking wheel is rotationally connected with the fixing seat, and the elastic member is abutted against the fixing seat.

[0014] In one embodiment, the fixing plate and the walking assembly are both multiple, multiple fixing plates are arranged in a circumferential array along one circle of the fixing ring, and multiple walking assemblies are respectively installed on multiple fixing plates.

[0015] In one embodiment, the walking mechanism is two, and two walking mechanisms are respectively arranged at opposite ends of the connecting cylinder.

[0016] In one embodiment, the atomizing nozzle is located between the two walking mechanisms.

[0017] In one embodiment, the atomizing nozzle is multiple, multiple atomizing nozzles are arranged in a circumferential array on the outer surface of the connecting cylinder, and the spraying areas of at least two atomizing nozzles are overlapped.

[0018] In one embodiment, one end of the conveying pipe close to the connecting cylinder is connected with the end of the connecting cylinder, and a threaded connecting pipe is installed on the end of the conveying pipe away from the connecting cylinder, and the threaded connecting pipe is connected with the external feeding and pressurizing equipment.

[0019] The above technical solution has at least the following advantages or beneficial effects:

[0020] The robot for pipeline weld inner wall corrosion prevention of the embodiment of the application comprises a connecting cylinder, a conveying pipe, an atomizing nozzle and a walking mechanism, the connecting cylinder has a cavity inside, the conveying pipe is communicated with the cavity and an external feeding pressurizing device. The atomizing nozzle is arranged on the outer surface of the connecting cylinder, and the walking mechanism is also arranged on the outer surface of the connecting cylinder. In use, the robot is placed inside a pipeline, and the connecting cylinder is pushed by the hand-held conveying pipe, and the connecting cylinder walks on the inner wall of the pipeline through the walking mechanism, so that the atomizing nozzle on the connecting cylinder is moved to the vicinity of the weld of the pipeline. Then, the external feeding pressurizing device is started, the anticorrosive coating is conveyed into the connecting cylinder through the conveying pipe, and is sprayed to the weld and the vicinity thereof of the pipeline through the atomizing nozzle. The robot for pipeline weld inner wall corrosion prevention of the embodiment of the application is convenient for spraying the anticorrosive coating to the weld of the inner wall of a small-bore pipeline, and prevents the weld of the inner wall of the pipeline from being corroded due to the anticorrosive coating being damaged.

[0021] The above summary is intended to illustrate only and is not intended to limit the application in any way. Further aspects, embodiments and features of the application will be apparent from a review of the drawings and the following detailed description. BRIEF DESCRIPTION OF DRAWINGS

[0022] In the drawings, like reference numerals will be used to indicate like or similar elements throughout the several views. The drawings are not necessarily to scale. It should be understood that the drawings only depict some embodiments in accordance with the disclosure and should not be considered limiting of the scope of the disclosure.

[0023] Fig. 1 A state diagram of the robot for pipeline weld inner wall corrosion prevention in use in a pipeline;

[0024] Fig. 2 A structural schematic diagram of the robot for pipeline weld inner wall corrosion prevention;

[0025] Fig. 3 A structural schematic diagram of the walking mechanism;

[0026] BRIEF DESCRIPTION OF DRAWINGS

[0027] 1, connecting cylinder; 2, conveying pipe; 3, atomizing nozzle; 4, walking mechanism; 5, pipeline; 41, fixing ring; 42, fixing plate; 43, walking assembly; 431, telescopic rod; 432, elastic member; 433, walking wheel; 4311, first telescopic section; 4312, second telescopic section; 434, fixing seat; 435, rotating shaft; 6, threaded connecting pipe. DETAILED DESCRIPTION

[0028] In the following, only certain exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present application. Therefore, the drawings and the description are considered to be exemplary in nature rather than limiting.

[0029] As shown in Figs. 1 to 3 The present application provides a robot for pipeline weld inner wall corrosion prevention, which comprises a connecting cylinder 1, a conveying pipe 2, an atomizing nozzle 3 and a walking mechanism 4. The connecting cylinder 1 has a cavity inside. The conveying pipe 2 is in communication with the cavity and an external feeding and pressurizing device. The external feeding and pressurizing device delivers the corrosion protection paint into the cavity through the conveying pipe 2. The atomizing nozzle 3 is arranged on the outer surface of the connecting cylinder 1 and is in communication with the cavity. The walking mechanism 4 is arranged on the outer surface of the connecting cylinder 1 and is used for walking on the inner wall of the pipeline 5.

[0030] In use, the robot is placed inside the pipeline 5, and the connecting cylinder 1 is pushed by the hand-held conveying pipe 2. The connecting cylinder 1 walks on the inner wall of the pipeline 5 by the walking mechanism 4, so that the atomizing nozzle 3 on the connecting cylinder 1 is moved to the vicinity of the weld of the pipeline 5. Then the external feeding and pressurizing device is started to deliver the corrosion protection paint into the connecting cylinder 1 through the conveying pipe 2, and the corrosion protection paint is sprayed to the weld and its vicinity of the pipeline 5 through the atomizing nozzle 3. The robot for pipeline weld inner wall corrosion prevention of the present application is convenient for spraying the corrosion protection paint to the weld of the inner wall of the small-diameter pipeline 5, and prevents the weld of the inner wall of the pipeline 5 from being corroded due to the corrosion protection coating being damaged.

[0031] In an embodiment, the external feeding and pressurizing device comprises a pressurizing pump, a feeding pipe, a storage barrel and the like (not shown in the figure). One end of the feeding pipe is connected with the storage barrel, the pressurizing pump is arranged on the feeding pipe, the feeding pipe is connected with the conveying pipe 2, and the storage barrel stores the corrosion protection paint. After the pressurizing pump is started, the pressurizing pump provides a certain pressure for the corrosion protection paint, so that the corrosion protection paint can be smoothly delivered into the connecting cylinder 1 through the conveying pipe 2, and finally sprayed out through the atomizing nozzle 3. Both ends of the connecting cylinder 1 are closed, the conveying pipe 2 is a steel pipe, one end of the conveying pipe 2 close to the connecting cylinder 1 can be connected with one end of the connecting cylinder 1 through a connecting joint, and the other end of the conveying pipe 2 away from the connecting cylinder 1 is provided with a threaded connecting pipe 6 which is screwed with the feeding pipe. The atomizing nozzle 3 can be an existing pressure atomizing nozzle 3.

[0032] In an embodiment, in order to realize the walking of the robot inside the pipeline 5, the walking mechanism 4 comprises a fixing ring 41, a fixing plate 42 and a walking assembly 43. The fixing ring 41 is sleeved on the outer surface of the connecting cylinder 1, the fixing plate 42 is fixed on the fixing ring 41, and the walking assembly 43 is installed on the fixing plate 42. The inner diameter of the fixing ring 41 is matched with the outer diameter of the connecting cylinder 1, so that the fixing ring 41 can be directly sleeved on the connecting cylinder 1 for fixation.

[0033] The walking assembly 43 comprises a telescopic rod 431, an elastic member 432 and a walking wheel 433. An end of the telescopic rod 431 close to the fixing ring 41 is fixed on the fixing plate 42, the walking wheel 433 is installed on an end of the telescopic rod 431 far from the fixing ring 41, and the elastic member 432 is sleeved on the telescopic rod 431, with both ends of the elastic member 432 abutting against the fixing plate 42 and the walking wheel 433 respectively. The telescopic rod 431 and the fixing plate 42 can be fixed by welding, threaded connection or bolt connection.

[0034] Further, the telescopic rod 431 comprises a first telescopic section 4311 and a second telescopic section 4312. An end of the first telescopic section 4311 close to the fixing ring 41 is fixed on the fixing plate 42, and an end of the second telescopic section 4312 close to the fixing ring 41 is located inside the first telescopic section 4311. The second telescopic section 4312 can be telescoped in the first telescopic section 4311, and the walking wheel 433 is installed on an end of the second telescopic section 4312 far from the fixing ring 41.

[0035] In order to realize the telescoping of the telescopic rod 431, an end of the second telescopic section 4312 close to the fixing ring 41 is located inside the first telescopic section 4311. The diameter of the first telescopic section 4311 can gradually decrease from the direction close to the fixing ring 41 to the direction far from the fixing ring 41, and the diameter of the second telescopic section 4312 can also gradually decrease from the direction close to the fixing ring 41 to the direction far from the fixing ring 41. The diameter of an end of the second telescopic section 4312 close to the fixing ring 41 is greater than the diameter of an end of the first telescopic section 4311 far from the fixing ring 41. The design of the first telescopic section 4311 and the second telescopic section 4312 makes the second telescopic section 4312 be able to telescope in the first telescopic section 4311, but the end of the second telescopic section 4312 close to the fixing ring 41 cannot be separated from the inside of the end of the first telescopic section 4311 far from the fixing ring 41. The telescopic rod 431 can also be any existing telescopic rod 431 capable of realizing telescoping.

[0036] In order to realize the installation of the walking wheel 433, a fixing seat 434 is installed on an end of the telescopic rod 431 far from the fixing ring 41, the walking wheel 433 is installed on the fixing seat 434, the walking wheel 433 is rotationally connected with the fixing seat 434, and the elastic member 432 abuts against the fixing seat 434. Further, a rotating shaft 435 can be fixed in the middle of the walking wheel 433, and both ends of the rotating shaft 435 are rotationally connected with the fixing seat 434. In an embodiment, the elastic member 432 is a spring, one end of the spring can be fixedly connected with the fixing plate 42, and the other end of the spring can be fixedly connected with the fixing seat 434.

[0037] In an embodiment, the fixing plates 42 and the walking assemblies 43 are provided in plurality, the plurality of fixing plates 42 are arranged in a circumferential array along a circle of the fixing ring 41, and the plurality of walking assemblies 43 are respectively installed on the plurality of fixing plates 42. The walking mechanisms 4 are two, and the two walking mechanisms 4 are respectively arranged at opposite ends of the adapter cylinder 1. The connection between the fixing plate 42 and the fixing ring 41, and the connection between the second telescopic section 4312 and the fixing seat 434 can be achieved by welding, threaded connection or bolted connection and the like.

[0038] Since the telescopic rod 431 and the elastic member 432 are arranged on the walking assembly 43, when the robot is placed inside the pipeline 5, the telescopic rod 431 can be telescoped by the elasticity of the spring, so that the walking wheel 433 is tightly attached to the inner wall of the pipeline 5, which facilitates the movement of the robot inside the pipeline 5, and also enables the robot to be suitable for pipelines 5 of various diameters.

[0039] The atomizing spray heads 3 are located between the two walking mechanisms 4. The atomizing spray heads 3 are provided in plurality, and the plurality of atomizing spray heads 3 are arranged in a circumferential array on the outer surface of the adapter cylinder 1, and the spraying areas of at least two atomizing spray heads 3 overlap. The atomizing spray heads 3 are provided in plurality, and a circle of the plurality of atomizing spray heads 3 is arranged along the outer surface of the adapter cylinder 1, so that the plurality of spray heads can spray at the same time when spraying the anticorrosive paint, thereby spraying the pipeline 5 in a circle. Since the spraying areas of at least two atomizing spray heads 3 overlap, the anticorrosive paint can be sprayed to the pipeline 5 when spraying.

[0040] When it is necessary to apply anticorrosive paint to the weld of the inner wall of the small-diameter pipeline 5, the adapter cylinder 1 is placed inside the pipeline 5 by the hand-held conveying pipe 2, at this time, the telescopic rod 431 is shortened due to the extrusion in the direction of the adapter cylinder 1, and the spring also elastically deforms. Then, the threaded connector 6 installed on the conveying pipe 2 is connected with the feeding pipe of the external feeding and pressurizing equipment. Then, the adapter cylinder 1 is sent to the vicinity of the weld of the pipeline 5 by the hand-held conveying pipe 2, at this time, the atomizing spray heads 3 are also in the vicinity of the weld of the pipeline 5, and the walking wheels 433 roll on the inner wall of the pipeline 5 in the process of moving the adapter cylinder 1. Then, the pressurizing pump is started, the anticorrosive paint in the storage barrel is connected to the cavity of the adapter cylinder 1 through the feeding pipe and the conveying pipe 2 behind, then enters the inner cavity of the atomizing spray head 3, and finally the anticorrosive paint is sprayed on the weld and the vicinity of the weld of the pipeline 5 by the atomizing spray head 3. The robot of the present application is convenient for applying anticorrosive paint to the weld of the inner wall of the small-diameter pipeline 5, thereby preventing the weld of the inner wall of the pipeline 5 from being chemically corroded.

[0041] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. Also, the specific features, structures, materials or characteristics described can be combined in an appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0042] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0043] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of various changes or replacements within the technical range disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A robot for corrosion protection of the inner wall of a pipe weld, characterized in that The utility model relates to a kind of anti-corrosion coating spraying device, including: Adapter barrel, the inside of the adapter barrel has cavity; Delivery pipe, the delivery pipe is communicated with the cavity and external supply pressurizing equipment, and external supply pressurizing equipment is conveyed to the cavity by the delivery pipe with anticorrosive coating; Atomizing nozzle, the atomizing nozzle is located on the outer surface of the adapter barrel, and the atomizing nozzle is communicated with the cavity; Walking mechanism, the walking mechanism is arranged on the outer surface of the adapter barrel, and the walking mechanism is used to walk on the inner wall of pipeline.

2. The robot for the anticorrosion of the internal walls of the weld of a pipe according to claim 1, characterized in that, The walking mechanism includes a fixed ring, a fixed plate, and a walking assembly, the fixed ring is sleeved on the outer surface of the adapter barrel, the fixed plate is fixed on the fixed ring, and the walking assembly is mounted on the fixed plate.

3. The robot for the anticorrosion of the internal walls of the weld of a pipe according to claim 2, characterized in that, The walking assembly includes a telescopic rod, a resilient member, and a walking wheel, one end of the telescopic rod close to the fixed ring is fixed on the fixed plate, the walking wheel is mounted on the other end of the telescopic rod away from the fixed ring, and the resilient member is sleeved on the telescopic rod, and both ends of the resilient member are respectively abutted with the fixed plate and the walking wheel.

4. The robot for the anticorrosion of the internal walls of the weld of a pipe according to claim 3, characterized in that, The telescopic rod includes a first telescopic segment and a second telescopic segment, one end of the first telescopic segment close to the fixed ring is fixed on the fixed plate, and one end of the second telescopic segment close to the fixed ring is located inside the first telescopic segment, the second telescopic segment can be telescoped in the first telescopic segment, and the walking wheel is mounted on the other end of the second telescopic segment away from the fixed ring.

5. The robot for the anticorrosion of the internal walls of the weld of a pipe according to claim 3, characterized in that, The other end of the telescopic rod away from the fixed ring is provided with a fixed seat, the walking wheel is mounted on the fixed seat, the walking wheel is rotatably connected with the fixed seat, and the resilient member abuts against the fixed seat.

6. The robot for the anticorrosion of the internal walls of the weld of a pipe according to claim 2, characterized in that, The fixed plate and the walking assembly are both multiple, the multiple fixed plates are arranged in a circumferential array along one circle of the fixed ring, and the multiple walking assemblies are respectively mounted on the multiple fixed plates.

7. The robot for the anticorrosion of the internal wall of the weld of a pipe according to any one of the claims from 1 to 6, characterized by the fact that, The walking mechanism is two, and the two walking mechanisms are respectively arranged on opposite ends of the adapter barrel.

8. The robot for the anticorrosion of the internal walls of the weld of a pipe according to claim 7, characterized in that, The atomizing nozzle is located between the two walking mechanisms.

9. The robot for the anticorrosion of the internal wall of the weld of a pipe according to any one of claims 1 to 6, characterized in that, The atomizing nozzle is multiple, the multiple atomizing nozzles are arranged in a circumferential array on the outer surface of the adapter barrel, and the spraying areas of at least two atomizing nozzles overlap.

10. The robot for the anticorrosion of the internal wall of the weld of a pipe according to any one of claims 1 to 6, characterized in that, One end of the delivery pipe close to the adapter barrel is connected with the end of the adapter barrel, and the other end of the delivery pipe away from the adapter barrel is provided with a threaded connector, and the threaded connector is connected with the external supply pressurizing equipment.

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