A painting device for anticorrosive coating of the inner wall of a steel pipe

Abstract

The utility model belongs to the technical field of spraying device, especially relates to a kind of coating device for steel pipe inner wall anticorrosive coating, it includes walking assembly and spraying assembly;Walking assembly includes frame and at least three walking parts, and all walking parts are equidistantly arranged in the circumference of frame;Spraying assembly is set in frame, and the nozzle of spraying assembly is located in the tail of frame, and nozzle can rotate around the horizontal center line of frame, and the included angle between the axis of the jet port of nozzle and the horizontal center line of frame is greater than 0 and less than 90 degree.The walking assembly in the coating device can transport spraying assembly to steel pipe, and the multiple walking parts in walking assembly can ensure that walking assembly moves stably along the axial direction of steel pipe, then the nozzle rotating on spraying assembly evenly sprays anticorrosive coating to the inner wall of steel pipe, instead of staff to complete anticorrosive coating spraying operation in steel pipe, to improve spraying efficiency, thereby improve the construction efficiency of pumped storage power station.

Description

Technical Field

[0001] This utility model belongs to the technical field of spraying equipment, and specifically relates to a coating device for anti-corrosion coating of the inner wall of steel pipe. Background Technology

[0002] Currently, the water transmission pipelines between the intake pumping station and the booster pumping station in pumped storage power stations are mostly constructed by connecting multiple sections of small-diameter steel pipes (800mm in diameter); among them,

[0003] The steel pipe is required to have a corrosion resistance rating of Sa2.5 and an inner wall coating of 400μm ultra-thick solvent-free wear-resistant epoxy coating (corrosion protection coating).

[0004] In existing technologies, when spraying anti-corrosion coatings on the inner wall of steel pipes, workers need to enter the steel pipe with handheld spraying equipment to carry out the spraying operation. During the spraying operation, the workers are constrained by the size of the steel pipe (it is difficult to stand upright and turn inside the steel pipe), making the spraying operation of the anti-corrosion coating on the inner wall of the steel pipe a confined space operation, which reduces the spraying efficiency and affects the construction efficiency of pumped storage power stations. Utility Model Content

[0005] This utility model provides a coating device for anti-corrosion coating on the inner wall of steel pipes, in order to solve the technical problem in the prior art that when workers carry out spraying operations on steel pipes, they are constrained by the size of the steel pipes, which leads to a decrease in the workers' work efficiency and thus affects the construction efficiency of pumped storage power stations.

[0006] This utility model is achieved through the following technical solution:

[0007] A coating apparatus for applying an anti-corrosion coating to the inner wall of a steel pipe, comprising a traveling assembly and a spraying assembly;

[0008] The running gear includes a frame and at least three running parts, all of which are circumferentially arranged around the frame at equal intervals, and all of which travel in the same direction.

[0009] The painting assembly is installed in the frame. The nozzle of the painting assembly is located at the rear of the frame and can rotate around the horizontal center line of the frame. The angle between the axis of the nozzle's spray port and the horizontal center line of the frame is greater than 0° and less than 90°.

[0010] To better realize this utility model, the above structure is further optimized, and the frame is an equilateral triangular frame structure;

[0011] The number of the running gear is three, and the three running gears are respectively located at the three top corners of the frame.

[0012] To better realize this utility model, the above structure is further optimized, and the walking part includes a drive motor and a tracked pulley block;

[0013] The tracked pulley block is mounted on the chassis, and the direction of travel of the tracked pulley block is parallel to the horizontal center line of the chassis;

[0014] The drive motor is mounted on the tracked pulley block, and the driving end of the drive motor is connected to the tracked pulley block for transmission.

[0015] To better realize this utility model, further optimizations are made to the above structure, wherein the tracked pulley block includes a wheel frame, a rubber track, and multiple rollers;

[0016] The wheel frame is a rectangular frame structure, and the wheel frame is mounted on the frame. The long axis of the wheel frame is parallel to the center line of the frame.

[0017] Multiple rollers are equidistantly spaced along the long axis of the wheel frame and are rotatably mounted on the wheel frame;

[0018] Rubber tracks are wrapped around multiple rollers;

[0019] The drive motor is mounted on the wheel frame, and the actuating end of the drive motor is connected to one of the rollers via a transmission connection.

[0020] To better realize this utility model, further optimizations are made to the above structure, and the spraying assembly also includes a paint bucket;

[0021] The paint bucket is mounted on the chassis, and a suction pump is installed inside the paint bucket.

[0022] The nozzle is mounted on the paint bucket and rotates around the center line of the vehicle frame, with the outlet of the suction pump connected to the liquid inlet of the nozzle.

[0023] To better realize this utility model, the above structure is further optimized, and the coating device also includes a detection component for detecting the quality of the anti-corrosion coating;

[0024] The detection component is mounted on the painting component, and the detection end of the detection component is located at the rear of the vehicle frame.

[0025] To better realize this utility model, the above structure is further optimized, and the detection component includes a magnetic thickness gauge for detecting the thickness of the anti-corrosion coating.

[0026] To better realize this utility model, the above structure is further optimized, and the detection component includes an infrared laser detection device for detecting the uniformity of the anti-corrosion coating.

[0027] Compared with the prior art, this utility model has the following advantages:

[0028] The traveling component in the coating device provided by this utility model can transport the spraying component into the steel pipe. The multiple traveling parts in the traveling component can ensure that the traveling component moves smoothly along the axial direction of the steel pipe. Then, the rotating nozzle on the spraying component sprays the anti-corrosion coating evenly onto the inner wall of the steel pipe, replacing the workers to complete the anti-corrosion coating spraying operation in the steel pipe, thereby improving the spraying efficiency and thus improving the construction efficiency of the pumped storage power station. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of a coating device for applying anti-corrosion coating to the inner wall of steel pipes, provided by this utility model.

[0031] Figure 2 This is a schematic diagram of the structure of a coating device for anti-corrosion coating of the inner wall of steel pipe provided by this utility model during use.

[0032] Figure 3 This is a cross-sectional view of a coating device for applying anti-corrosion coating to the inner wall of steel pipes, provided by this utility model, during use.

[0033] In the picture:

[0034] 1. Running gear; 11. Frame; 12. Running gear;

[0035] 2. Spraying components; 21. Paint bucket; 22. Nozzle;

[0036] 3. Detection components;

[0037] 4. Steel pipes. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0039] In the description of this utility model, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0041] In the embodiments of this application, such as Figures 1 to 3 As shown, the coating device is mainly used for anti-corrosion spraying of the inner wall of steel pipe 4. In this embodiment, steel pipe 4 refers to the small-diameter steel pipe with a diameter of 800mm mentioned in the background art. It can also be used for steel pipes with a diameter of less than 800mm. Of course, it can also be used for steel pipes with a diameter of more than 800mm to replace manual spraying operations, thereby reducing labor costs and improving spraying efficiency.

[0042] The coating device includes a traveling assembly 1 and a spraying assembly 2; wherein...

[0043] See Figure 1 and Figure 3 The walking assembly 1 includes a frame 11 and at least three walking parts 12. All the walking parts 12 are circumferentially arranged around the frame 11 at equal intervals, and all the walking parts 12 have the same walking direction.

[0044] The spraying assembly 2 is installed in the frame 11. The nozzle 22 of the spraying assembly 2 is located at the rear of the frame 11, and the nozzle 22 can rotate around the horizontal center line of the frame 11. The angle between the axis of the spraying port of the nozzle 22 and the horizontal center line of the frame 11 is greater than 0° and less than 90°. That is, the spraying port of the nozzle 22 faces the inner wall of the steel pipe 4, so as to uniformly spray the inner wall of the steel pipe 4.

[0045] When using this coating device, the operator can insert the walking component 1 into the steel pipe 4 from one end of the steel pipe 4 and make the walking direction of the walking part 12 parallel to the axis of the steel pipe 4 so that the walking component 1 can move smoothly along the axis of the steel pipe 4, providing a basis for uniform spraying of the anti-corrosion coating.

[0046] When the tail of the walking component 1 enters the steel pipe 4, the operator can start the spraying component 2 and make the nozzle 22 in the spraying component 2 rotate around the horizontal center line of the frame 11. During the rotation of the nozzle 22, the walking component 1 stops moving, and the spraying component 2 sprays the anti-corrosion coating onto the inner wall of the corresponding steel pipe 4 through the nozzle 22.

[0047] After the nozzle 22 rotates around the horizontal center line of the frame 11 and completes the spraying of the anti-corrosion coating, the operator controls the walking component 1 to move along the axial direction of the steel pipe 4 by one unit stroke, and transports the spraying component 2 to the next position to continue the spraying of the anti-corrosion coating until the walking component 1 is moved out from the other end of the steel pipe 4 and the inner wall of the steel pipe 4 is completely sprayed with the anti-corrosion coating.

[0048] This coating device can replace workers entering the steel pipe 4 to complete the anti-corrosion coating spraying operation, thereby improving the spraying efficiency and thus improving the construction efficiency of the pumped storage power station.

[0049] It is worth noting that the above-mentioned unit travel distance is the distance moved by the walking component 1 in a single movement, such as... Figure 3 As shown, the diameter of the unit stroke is equal to the diameter of the spraying area of ​​the nozzle 22. That is, after the traveling component 1 moves one unit stroke, the traveling component 1 can drive the spraying component 2 to move one unit stroke together. The nozzle 22 just enters the next spraying range to carry out the spraying operation. The spraying range is connected with the previous spraying range to ensure the uniformity of the sprayed anti-corrosion coating.

[0050] In some embodiments, the coating device can be controlled remotely, or a controller can be installed on the walking component 1 for automatic control. In this embodiment, the coating device is controlled remotely, and both the walking component 1 and the spraying component 2 are connected to the remote control signal. The operator can remotely control the alternating intermittent movements of the walking component 1 and the spraying component 2 to improve the spraying effect.

[0051] The aforementioned alternating intermittent action refers to the following: when the traveling component 1 is moving, the nozzle 22 in the spraying component 2 stops spraying; and when the nozzle 22 in the spraying component 2 is spraying, the traveling component 1 stops moving. The two alternate between starting and stopping to ensure the uniformity and completeness of the sprayed anti-corrosion coating.

[0052] In some embodiments, the frame 11 described above is an equilateral triangular frame structure, see [reference]. Figure 1 and Figure 2 ;in,

[0053] There are three traveling parts 12, which are respectively located at the three top corners of the frame 11. The distance from the inner part of the frame 11 to the end of the traveling part 12 (the end that contacts the steel pipe 4) is equal to the radius of the steel pipe 4. That is, when the traveling assembly 1 enters the interior of the steel pipe 4, the ends of the three traveling parts 12 are close to the inner wall of the steel pipe 4 so that the traveling assembly 1 can move smoothly along the axial direction of the steel pipe 4, ensuring the smooth progress of the spraying operation.

[0054] In some embodiments, the aforementioned walking unit 12 includes a drive motor and a tracked pulley system; wherein,

[0055] The tracked pulley block is mounted on the chassis 11, and the direction of travel of the tracked pulley block is parallel to the horizontal center line of the chassis 11.

[0056] The drive motor is mounted on the tracked pulley block, and the driving end of the drive motor is connected to the tracked pulley block for transmission.

[0057] The drive motor is connected to the aforementioned remote control signal to control the start and stop of the drive motor, making the control of the walking component 1 more convenient.

[0058] It is worth noting that the tracked pulley block can prevent the walking component 1 from shifting during movement, thus ensuring the smooth progress of the spraying operation.

[0059] In some embodiments, the tracked pulley system described above includes a wheel frame, a rubber track, and a plurality of rollers; wherein,

[0060] The wheel frame has a rectangular frame structure and is mounted on the frame 11. The long axis of the wheel frame is parallel to the center line of the frame 11.

[0061] Multiple rollers are equidistantly spaced along the long axis of the wheel frame and are rotatably mounted on the wheel frame;

[0062] Rubber tracks are wrapped around multiple rollers;

[0063] The drive motor is mounted on the wheel frame, and the driving end of the drive motor is connected to one of the rollers to drive the roller to rotate. The roller drives all the rollers to rotate through the rubber track, so that the walking component 1 can move smoothly along the axis of the steel pipe 4. The rubber track can prevent the tracked pulley block from slipping inside the steel pipe 4, so that the movement of the walking component 1 is more stable.

[0064] In some embodiments, the spraying assembly 2 further includes a paint bucket 21; wherein,

[0065] A paint bucket 21 is mounted on the frame 11, and a suction pump (not shown in the figure) is installed inside the paint bucket 21.

[0066] The nozzle 22 is rotatably mounted on the paint bucket 21 around the horizontal center line of the frame 11, and the liquid outlet of the suction pump is connected to the liquid inlet of the nozzle 22. The suction pump is connected to the aforementioned remote control signal, and the operator can control the start and stop of the suction pump through remote control, that is, control the start and stop of the spraying assembly 2.

[0067] It is worth noting that the motors in the drive motor and suction pump mentioned above are all rechargeable motors, which reduces the wiring layout. At the same time, the setting of paint bucket 21 can eliminate the need for a liquid supply pipe (the pipeline that provides paint), so as to avoid the situation where the pipeline (line and liquid supply pipe) comes into contact with the undried and damaged anti-corrosion coating during the spraying process, which would affect the spraying quality.

[0068] The aforementioned remote control can achieve signal connection with the drive motor and suction pump through existing mature technologies such as infrared, Bluetooth, and WiFi, which are commonly used wireless connection methods in existing technologies.

[0069] In some embodiments, the coating apparatus further includes a detection component 3; the detection component 3 is disposed on the spraying component 2, and the detection end of the detection component 3 is located at the rear of the vehicle frame 11, and the detection component 3 is connected to a terminal (computer, smartphone, tablet computer, etc.) via signal.

[0070] During the spraying operation, the detection component 3 can detect the quality of the anti-corrosion coating on the inner wall of the steel pipe 4 and feed the detected quality information back to the terminal. The staff can understand the quality of the anti-corrosion coating through the terminal and take remedial measures in time when there are problems with the quality of the anti-corrosion coating.

[0071] Preferably, the detection component 3 includes a magnetic thickness gauge and an infrared laser detection device. The magnetic thickness gauge measures the thickness of the anti-corrosion coating, and the infrared laser detection device detects the uniformity of the anti-corrosion coating to ensure the uniformity of the anti-corrosion coating spraying.

[0072] The aforementioned magnetic thickness gauges can be the DR260 magnetic coating thickness gauge and the ZXL-820 magnetic thickness gauge, etc.; the infrared laser detection equipment can be the Nicolet iS50 Pro+ Fourier transform infrared spectrometer.

[0073] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A coating device for applying an anti-corrosion coating to the inner wall of steel pipes, characterized in that: Includes a walking assembly (1) and a painting assembly (2); The traveling assembly (1) includes a frame (11) and at least three traveling parts (12), all of which are circumferentially arranged around the frame (11) at equal intervals, and all of which travel in the same direction. The spraying assembly (2) is installed in the frame (11). The nozzle (22) of the spraying assembly (2) is located at the rear of the frame (11), and the nozzle (22) can rotate around the center line of the frame (11). The angle between the axis of the spraying port of the nozzle (22) and the horizontal center line of the frame (11) is greater than 0° and less than 90°.

2. The coating apparatus according to claim 1, characterized in that: The frame (11) is an equilateral triangular frame structure; The number of the walking parts (12) is three, and the three walking parts (12) are respectively located at the three top corners of the frame (11).

3. The coating apparatus according to claim 2, characterized in that: The walking unit (12) includes a drive motor and a tracked pulley system; The tracked pulley block is mounted on the frame (11), and the direction of travel of the tracked pulley block is parallel to the horizontal center line of the frame (11); The drive motor is mounted on the tracked pulley block, and the driving end of the drive motor is connected to the tracked pulley block for transmission.

4. The coating apparatus according to claim 3, characterized in that: The tracked pulley system includes a wheel frame, a rubber track, and multiple rollers; The wheel frame is a rectangular frame structure, and the wheel frame is mounted on the frame (11). The long axis of the wheel frame is parallel to the center line of the frame (11). Multiple rollers are equidistantly spaced along the long axis of the wheel frame and are rotatably mounted on the wheel frame; Rubber tracks are wrapped around multiple rollers; The drive motor is mounted on the wheel frame, and the actuating end of the drive motor is connected to one of the rollers via a transmission connection.

5. The coating apparatus according to claim 1, characterized in that: The spraying assembly (2) also includes a paint bucket (21); A paint bucket (21) is mounted on the frame (11), and a suction pump is installed inside the paint bucket (21); The nozzle (22) is rotatably mounted on the paint bucket (21) around the center line of the frame (11), and the outlet end of the suction pump is connected to the liquid inlet end of the nozzle (22).

6. The coating apparatus according to claim 1, characterized in that: It also includes a testing component (3) for detecting the quality of anti-corrosion coatings; The detection component (3) is disposed on the spraying component (2), and the detection end of the detection component (3) is located at the rear of the frame (11).

7. The coating apparatus according to claim 6, characterized in that: The detection component (3) includes a magnetic thickness gauge for detecting the thickness of the anti-corrosion coating.

8. The coating apparatus according to claim 6, characterized in that: The detection component (3) includes an infrared laser detection device for detecting the uniformity of the anti-corrosion coating.

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