TWI714315B - High-molecular paint spraying device and method in pipeline - Google Patents

Abstract

A spraying device for polymer paint in a pipeline, comprising: a pipeline; a spray gun module, including a frame, a spray gun, a paint delivery pipe, a first magnetism generating unit and a second magnetism generating unit, wherein the paint is conveyed The pipe is connected to the spray gun, the first magnetic generating unit is used to be fixed on the frame and arranged around the pipe, and the second magnetic generating unit is used to sleeve the spray gun; and a movement control unit, Used to move one of the pipe and the spray gun module, thereby making the first magnetism generating unit and the second magnetism generating unit move simultaneously, the second magnetism generating unit corresponds to the first magnetism generating unit, and the The magnetic action between the first and second magnetic generating units makes the spray gun positioned on the axis of the pipe.

Description

High-molecular paint spraying device and method in pipeline

The invention relates to a spraying device and method for polymer coating in pipelines, and more particularly to a spraying device and method for polymer coatings in pipelines with a high aspect ratio.

As the superiority of pipeline transportation is more and more recognized by people, the medium for constructing pipelines is becoming more and more complex, but pipeline protection measures cannot keep up. In recent decades, the perforation of a large number of pipelines has been severely damaged. In addition to causing leakage accidents and polluting the environment, it is also extremely easy to cause explosions and fires. Especially for the construction of oil and natural gas pipelines, it is very important to realize the safe operation of pipelines. Minimizing the harm caused by pipeline corrosion is not only an economic problem, but also a social problem.

At present, the anti-corrosion technology of metal pipelines has been greatly developed, but there are still unresolved technical problems. Specifically, the anti-corrosion measures of large-diameter metal pipelines are easier to implement. Limited by the size of the pipe diameter, it is difficult to implement anti-corrosion in the pipe, and it is very difficult to track the quality of the anti-corrosion layer, and the local leakage of the anti-corrosion layer will cause the corrosion failure. It can be seen that designing a device for in-pipe anti-corrosion of small diameter metal pipes is a problem that needs to be solved urgently. In addition, it is also a problem that needs to be solved by implementing a device for preventing scale in the metal pipes with high aspect ratio for geothermal heating.

The mainland patent application (Publication No. CN202909898U) discloses a small-diameter metal pipeline anticorrosion device, including a paint spraying device and a pipeline movement control device for spraying an anticorrosive coating on the inner wall of a small-diameter metal pipeline to perform painting anticorrosion operations, wherein: the pipeline The movement control device includes a walking frame for fixed installation of the small-diameter metal pipe, the walking frame is placed on a track provided on the supporting frame, and a driving device is provided on the walking frame, and the driving device drives the walking frame on the Make positive and negative linear motions on the track to make the paint spraying device enter When performing paint spraying and anticorrosion operations, relative movement between the small-diameter metal pipe on the walking frame and the paint spraying device enables the paint spraying device to spray paint on the inner wall of the small-diameter metal pipe. The utility model can perform fast and efficient internal anti-corrosion operations on various small-diameter metal pipelines, the quality of the anti-corrosion layer is reliable, and the internal anti-corrosion effect is good.

However, the patent document uses an adjustable centering element to roll in contact with the inner wall of the small-diameter metal pipe (for example, the support wheel rolls) when the paint spraying device performs the painting and anti-corrosion operation, so as to enter the small-diameter metal pipe The paint spray gun is coaxial with the small diameter metal pipe. Therefore, the spray gun must first extend into the deepest part of the pipe, and then start painting and gradually leave the pipe in the reverse direction to prevent the paint that has just been sprayed from being damaged by the support wheel, which will cause the paint to dry time Delay, thereby extending the entire process time.

Therefore, there is a need to provide a device and method for spraying polymer coatings in pipelines to solve the aforementioned problems.

One object of the present invention is to provide a spraying device for polymer paint in a pipeline, which utilizes the magnetic action between the first and second magnetism generating units to position the spray gun.

According to the above objective, the present invention provides a high-molecular paint spraying device in a pipeline, comprising: a frame, a pipeline; a spray gun module, including a spray gun, a paint delivery pipe, a first magnetic generating unit and a second A magnetic generating unit, wherein the paint delivery pipe is connected to the spray gun, the first magnetic generating unit is used to be fixed on the frame body and arranged around the pipe, and the second magnetic generating unit is used to sleeve the spray gun On; and a movement control unit for moving one of the pipe and the spray gun module, thereby causing the first magnetism generating unit and the second magnetism generating unit to move simultaneously, the second magnetism generating unit corresponding to the The first magnetism generating unit, and the magnetic action between the first and second magnetism generating units enables the spray gun to be positioned on the axis of the pipe.

When spraying, because the present invention uses the magnetic effect between the first and second magnetism generating units to position the spray gun on the axis of the pipe. In order to prevent the spray gun and the paint delivery pipe from contacting the inner wall of the pipe, the spray gun does not need to be relatively extended into the deepest part of the pipe before spraying. The spray gun of the present invention can start spraying as long as it extends into the pipeline, and the paint just sprayed will not be damaged by the movement of the spray gun, so that the drying time of the paint will be earlier and the entire process time will be shortened. Furthermore, the spray gun of the present invention can also be extended into and out of the pipe for repeated spraying, and the coating sprayed multiple times will not be damaged by the movement of the spray gun.

1‧‧‧Polymer paint spraying device in pipeline

10‧‧‧Pipe

12‧‧‧Support frame

120‧‧‧Coating

13‧‧‧Mobile control unit

130‧‧‧Walking frame

15‧‧‧Spray unit

155‧‧‧Paint Can

159‧‧‧Spray Gun Module

1590‧‧‧Frame

1591‧‧‧The first magnetic generating unit

1591a‧‧‧The first magnetic element

1592b‧‧‧The first magnetic element

1591c‧‧‧The first magnetic element

1592‧‧‧Second Magnetic Generating Unit

1592a‧‧‧Second magnetic element

1592b‧‧‧Second magnetic element

1592c‧‧‧Second magnetic element

1593‧‧‧Paint delivery pipe

1594‧‧‧Spray gun

2‧‧‧Polymer paint spraying device in pipeline

20‧‧‧Pipe

22‧‧‧Support frame

220‧‧‧Coating

23‧‧‧Mobile control unit

230‧‧‧Walking frame

259‧‧‧Spray Gun Module

2590‧‧‧Frame

2591‧‧‧The first magnetic generating unit

2592‧‧‧Second Magnetic Generating Unit

2593‧‧‧Paint delivery pipe

2594‧‧‧Spray gun

3‧‧‧Polymer paint spraying device in pipeline

30‧‧‧Pipe

301‧‧‧Elbow

32‧‧‧Support frame

320‧‧‧Coating

359‧‧‧Spray Gun Module

3591‧‧‧The first magnetic generating unit

3592‧‧‧Second Magnetic Generating Unit

3593‧‧‧Paint delivery pipe

3594‧‧‧Spray gun

F1‧‧‧Force

F1’‧‧‧Force

F2‧‧‧Force

F2’‧‧‧Force

F3‧‧‧Force

F3’‧‧‧Force

G‧‧‧weight

N‧‧‧N pole

S‧‧‧S pole

1a~1c are schematic diagrams of a spraying device for polymer coating in a pipeline according to the first embodiment of the present invention.

2 is a schematic diagram of the structure of the spray gun module and the pipe of the first embodiment of the present invention.

Fig. 3a is a schematic structural diagram of a spray gun module according to an embodiment of the present invention.

Fig. 3b is a schematic diagram of the structure of a spray gun module according to another embodiment of the present invention.

4a to 4c are schematic diagrams of a spraying device for polymer coating in a pipeline according to a second embodiment of the present invention.

FIG. 5 is a schematic diagram of the structure of the spray gun module and the pipe of the second embodiment of the present invention.

6a to 6c are schematic diagrams of a spraying device for polymer coating in a pipeline according to a third embodiment of the present invention.

Figures 7a-7c are schematic diagrams of a spraying device for polymer coating in a pipeline according to another embodiment of the present invention.

In order to make the above-mentioned objectives, features and characteristics of the present invention more obvious and understandable, the relevant embodiments of the present invention are described in detail below in conjunction with the drawings.

Please refer to FIGS. 1a to 1c, which show a schematic diagram of the polymer coating spraying device 1 in the pipeline according to the first embodiment of the present invention. In this embodiment, the pipe diameter of the pipe 10 is about 2 inches to 20 inches and the pipe length is 3 meters to 15 meters. The pipe 10 can be made of metal and used for geothermal water supply and water intake. The pipe diameter is preferably about 3 inches to 5 inches and the tube length is preferably about 4 meters to 10 meters. In other embodiments, the pipe 10 may be made of other materials (such as plastic).

The polymer coating spraying device 1 in the pipeline in this case includes a spraying unit 15, a movement control unit 13 and a support frame 12. The movement control unit 13 includes a walking frame 130 for fixed installation of the pipeline 10, the walking frame 130 is arranged on a track (not shown) provided on the support frame 12, and a driving unit (not shown) is provided on the walking frame 130 Show). For example, the drive unit may include a motor and a transmission member installed on the walking frame 130, the control end of the motor is connected to the control end of the motor controller, the transmission member includes a runner and a transmission belt, the transmission belt is sleeved on the rotation The drive shaft of the runner is connected to the output shaft of the motor through a reducer and a coupling. The runner is driven by the motor to drive the transmission belt, and then the transmission belt drives the transmission belt. The wheel on the walking frame runs. In practical applications, the motor can be a variable frequency motor, and accordingly the motor controller is a frequency converter.

The driving unit can drive the walking frame 130 to perform forward and reverse linear motions on the track, so that when the spraying unit 15 is spraying paint anti-corrosion or anti-fouling operation, the pipeline 10 on the walking frame 130 and the spraying unit 15 Relative movement is performed between them, so that the spraying unit 15 can spray the inner wall of the pipe 10. The support frame 12 can also be designed as a movable support frame.

The spraying unit 15 includes a paint tank 155 and a spray gun module 159. The spray gun module 159 includes a paint delivery pipe 1593 and a spray gun 1594. The paint delivery pipe 1593 can be a hollow hard pipe. For example, the spraying unit 15 further includes an output port of an air compressor (not shown) connected to an input port of the air tank (not shown) via a distribution valve (not shown) and a control valve (not shown). An output port of the gas storage tank is connected to an input port of the paint delivery pipe 1593 via an atomization opening and closing valve (not shown), and the other output port of the gas storage tank is connected to an input port of the paint delivery pipe 1593 via a paint tank valve (not shown) The input port of the paint tank 155 is connected, and the output port of the paint tank is connected with the other input port of the paint delivery pipe 1593. The two input ports of the paint delivery pipe 1593 are located on the side of the closed end of the paint delivery pipe 1593. The spray gun 1594 is connected to the outlet on the side of the open end of the paint delivery pipe 1593. The paint delivery pipe 1593 is fixed on the support frame 12. The spray gun 1594 It is fixed on the support frame 12 by the paint delivery pipe 1593.

Please refer to FIG. 2, the spray gun module 159 further includes a frame 1590 and a first magnetic generating unit 1591. The first magnetic generating unit 1591 is fixed to the frame 1590 and arranged around the pipe 10, such as the first A magnetic generating unit 1591 can be a permanent magnet or an electromagnet, and is fixed on the frame 1590, and the frame 1590 is fixed on the support frame 12. The first magnetic generating unit 1591 is fixed on the supporting frame 12 by the frame 1590. The spray gun 1594 also includes a second magnetism generating unit 1592 through the spray gun module 159 to be sheathed on the spray gun 1594. For example, the second magnetism generating unit 1592 can also be a permanent magnet or an electromagnet. The second magnetic generating unit 1592 is fixed on the supporting frame 12 by the spray gun 1594 and the paint delivery pipe 1593. The second magnetism generating unit 1592 is used to move simultaneously with the first magnetism generating unit 1591 and corresponds to the first magnetism generating unit 1591, and the magnetic effect between the first and second magnetism generating units 1591 and 1592 It can repel or attract each other.

3a, in this embodiment, when the first magnetic generating unit 1591 includes at least three first magnetic elements 1591a, 1591b, 1591c to generate N poles inwardly, the second magnetic generating unit 1592 also includes at least three When the second magnetic elements 1592a, 1592b, 1592c generate N poles outward, and the three second magnetic elements 1592a, 1592b, 1592c correspond to the three first magnetic elements 1591a, 1591b, 1591c, then the first and The magnetic effects between the second magnetic generating units 1591 and 1592 can repel each other. For example, the polymer paint spraying device in the pipeline further includes a processor, which has a plurality of chips and IC integrated circuits, and can adjust the first magnetic elements 1591a, 1591b, 1591c or the second magnetic elements 1592a, 1592b, 1592c (such as electromagnet) magnetic force. Adjusting the force F1, F2, F3 generated by the repulsive action on the spray gun 1594, so that the total force of the force F1, F2, F3 and the weight G of the spray gun 1594 can make the spray gun 1594 suspend in the spray gun 1594. Near the axis of the pipe 10. For example, if the weight G of the spray gun 1594 is 500 grams, the vertical component of F1 can be adjusted to 1500 grams, and the vertical components of F2 and F3 are both 500 grams, so that the forces F1, F2, F3 and The vertical component of the weight G The sum of is zero, and the spray gun 1594 is suspended. Please refer to FIG. 2 again, if the pipe 10 has paramagnetism, the three first magnetic elements 1591a, 1591b, 1591c will conduct the magnetic conduction of the pipe 10 to generate N poles inward.

Please refer to FIG. 3b. In another embodiment, when the first magnetic generating unit 1591 includes at least three first magnetic elements 1591a, 1591b, 1591c (for example, generating S poles inward), the second magnetic generating unit 1592 also It includes at least three second magnetic elements 1592a, 1592b, 1592c (for example, N-poles are generated outward), and the three second magnetic elements 1592a, 1592b, 1592c correspond to the three first magnetic elements 1591a, 1591b, 1591c, respectively At this time, the magnetic effects between the first and second magnetic generating units 1591 and 1592 can attract each other. In the same way, adjust the forces F1', F2', F3' generated by the above-mentioned attraction on the spray gun 1594, so that the total of the forces F1', F2', F3' and the weight G of the spray gun 1594 The combined force can make the spray gun 1594 float near the axis of the pipe 10. Please refer to FIG. 2 again. If the pipe 10 has paramagnetism, the three first magnetic elements 1591a, 1591b, 1591c will conduct the magnetic conduction of the pipe 10 to generate S poles inward.

During the spraying of the paint 120, the magnetic action between the first and second magnetism generating units 1591 and 1592 can position the spray gun 1594 near the axis of the pipe 10, thereby enabling the spray gun 1594 and the paint to be transported The pipe 1593 does not contact the inner wall of the pipe 10, and the spray gun 1594 entering the pipe 10 is coaxial with the pipe 10. The coaxial design is beneficial to uniform spraying. Adjusting the diameter around the second magnetic generating unit 1592 can be applied to pipes of various pipe diameters.

Please refer to Figures 1a~1c again, the workflow of the present invention is:

1. Work preparation:

Install and fix the pipeline 10 in the pipeline that needs to be treated with anti-corrosion or anti-scale treatment on the walking frame 130. The walking frame 130 is arranged on the track of the supporting frame 12, and the pipeline 10 can move synchronously with the walking frame 130. The motor 135 is controlled by the motor control unit 137 to control the linear motion direction and the motion speed of the walking frame 130 on the track.

Second, carry out the spraying of polymer coatings (such as paint) on the inner wall of the pipeline industry:

The motor 135 controls the walking frame 130 to move to the right (Figures 1a and 1b show that the walking frame 130 moves from right to left) so that the pipe 10 moves to the right, while the stationary spray gun 1594 relatively extends into the pipe 10, and Adjust the walking frame 30 to an appropriate moving speed. When the walking frame 130 moves, it also turns on the air compressor, opens the control valve, and inflates the air tank. After the compressed gas is filled to the specified pressure, the paint tank valve is opened and the air tank outputs the compressed air to the paint tank 155 to make the paint tank The paint 120 in the 155 is pressurized to facilitate the flow and spraying of the paint 120, so the paint 120 enters the spray gun 1594 through the paint delivery pipe 1593. Then the atomization opening and closing valve is opened, and the compressed air output from the air tank controls the spray gun 1594 to open, and the spray gun 1594 atomizes the paint 120, so that the spray gun 1594 starts spraying.

When the spray gun 1594 and the paint delivery pipe 1593 relatively extend into the deepest part of the pipe 10 (the leftmost end of the pipe 10 in Fig. 1b), at this time, stop the drive of the motor by the motor control unit, and the walking frame 130 stops moving to close the fog Chemical opening and closing valve, because no compressed air is delivered to the spray gun 1594, the spray gun 1594 stops spraying, and the control valve and the paint tank valve are closed.

The motor controls the walking frame 130 to move to the left (Figures 1b and 1c show that the walking frame 130 moves from left to right) so that the pipe 10 moves to the left, so that the spray gun 1594 relatively leaves the pipe 10 (the most of the pipe 10 in Figure 1c). Outside the right end), the spraying operation is completed.

In actual use, the initial position of the walking frame 130 can be appropriately arranged according to the requirements of the anti-corrosion or scale-proof range in the pipe (such as the entire pipe). Through the spraying of the coating of the present invention, the entire pipeline inner wall and the partial inner wall of the pipeline can be treated with anti-corrosion or anti-scaling in the pipeline.

When spraying, because the present invention utilizes the magnetic effect between the first and second magnetism generating units to position the spray gun near the axis of the pipe, and then make the spray gun, the paint delivery pipe and the inner part of the pipe The wall will not touch, so the spray gun does not need to be relatively extended into the deepest part of the pipe before spraying. The spray gun of the present invention can start spraying as long as it extends into the pipe, and it has just finished spraying The paint will not be damaged by the movement of the spray gun, which will make the drying time of the paint earlier and shorten the entire process time. Furthermore, the spray gun of the present invention can also be extended into and out of the pipe for repeated spraying, and the coating sprayed multiple times will not be damaged by the movement of the spray gun.

Please refer to FIGS. 4a to 4c, which show a schematic diagram of a polymer coating spraying device in a pipeline according to a second embodiment of the present invention. The polymer paint spraying device 2 of the second embodiment is substantially similar to the polymer paint spraying device 1 of the first embodiment, and similar components are marked with similar numbers. The polymer paint spraying device 2 of the second embodiment is different from the polymer paint spraying device 1 of the first embodiment in that: the support frame 22 is used to support the pipe 20 (for example, the pipe 20 is installed by means of roller support. On the support frame 22 (not shown in the figure), the movement control unit 23 is used to move the spray gun module 259 (that is, the spray gun module 259 is set on the walking frame 230 and moves with the walking frame 230). The paint delivery pipe 2593 is fixed on the traveling frame 230 of the movement control unit 23, and the spray gun 2594 is fixed on the travel frame 230 of the movement control unit 23 by the paint delivery pipe 2593.

Please refer to FIG. 5, when the spray gun 2594 is inserted into the pipe 20, the first magnetic generating unit 2591 is fixed on the frame 2590 and arranged around the pipe 20, and the frame 2590 is fixed on the movement control unit 23 On the walking frame 230. The first magnetic generating unit 2591 is fixed on the traveling frame 230 of the movement control unit 23 by the frame body 2590. The second magnetic generating unit 2592 is sleeved on the spray gun 2594. The second magnetism generating unit 2592 is fixed on the traveling frame 230 of the movement control unit 23 by the spray gun 2594 and the paint delivery pipe 2593. The second magnetism generating unit 2592 is used to move simultaneously with the first magnetism generating unit 2591 and corresponds to the first magnetism generating unit 2591, and the magnetic effect between the first and second magnetism generating units 2591 and 2592 It can repel or attract each other.

When the paint 220 is sprayed, the magnetic action between the first and second magnetism generating units 2591 and 2592 enables the spray gun 2594 to be positioned near the axis of the pipe 20, so that the spray gun 2594 and the paint can be transported The pipe 2593 does not contact the inner wall of the pipe 20, and makes the spray gun 2594 entering the pipe 20 It is coaxial with the pipe 20, and the coaxial design is conducive to uniform spraying.

Since the present invention utilizes the magnetic action between the first and second magnetism generating units to position the spray gun near the axis of the pipeline, so that the spray gun and the paint delivery pipe will not contact the inner wall of the pipeline, Therefore, the spray gun does not need to be relatively extended into the deepest part of the pipe before spraying can be started. The spray gun of the present invention can start spraying as long as it extends into the pipeline, and the paint just sprayed will not be damaged by the movement of the spray gun, so that the drying time of the paint will be earlier and the entire process time will be shortened. Furthermore, the spray gun of the present invention can also be extended into and out of the pipe for repeated spraying, and the coating sprayed multiple times will not be damaged by the movement of the spray gun.

Please refer to FIGS. 6a to 6c, which show a schematic diagram of a spraying device for polymer coating in a pipeline according to a third embodiment of the present invention. The polymer paint spraying device 3 of the third embodiment is substantially similar to the polymer paint spraying device 2 of the second embodiment, and similar components are marked with similar numbers. The polymer paint spraying device 3 of the third embodiment differs from the polymer paint spraying device 2 of the second embodiment in that: the polymer paint spraying device 3 of the third embodiment does not require the above-mentioned movement control unit; the spray gun mold The group 359 includes a plurality of first magnetism generating units 3591, which are arranged around the pipe 30 in sequence; the spray gun module 359 further includes a plurality of second magnetism generating units 3592, which are arranged in sequence on the spray gun 3594 And the paint conveying pipe 3593; the support frame 32 is used to support the pipe 30 and the first magnetic generating units 3591. Preferably, the pipe 30 is not paramagnetic.

For example, it is possible to adjust the repulsion or attraction between the first magnetism generating units 3591 and the second magnetism generating units 3592 similar to the driving principle of the maglev train moving forward and backward to make the spray gun mold The spray gun 3594, the paint delivery pipe 3593 and the first magnetism generating units 3591 of the group 359 move forward or backward. Furthermore, when the paint is sprayed, the magnetic action between the first magnetism generating units 3591 and the second magnetism generating units 3592 can also enable the spray gun 3594 and the paint delivery pipe 3593 to be positioned at the Near the axis of the pipe 30, the spray gun 3594 and the paint delivery pipe 3593 will not be connected to the inner wall of the pipe 30 And make the spray gun 3594 that enters the pipe 30 coaxial with the pipe 30, and the coaxial design is conducive to uniform spraying.

Please refer to FIGS. 7a-7c. In another embodiment, when the paint delivery pipe 3593 is a hollow hose, the spraying module 359 can be used for spraying the pipe 30 with the bend 301.

When spraying, because the present invention utilizes the magnetic effect between the first magnetism generating units and the second magnetism generating units to position the spray gun near the axis of the pipe, so that the spray gun and the The paint delivery pipe does not touch the inner wall of the pipe, so the spray gun does not need to be relatively extended into the deepest part of the pipe before spraying. The spray gun of the present invention can start spraying as long as it extends into the pipeline, and the paint just sprayed will not be damaged by the movement of the spray gun, so that the drying time of the paint will be earlier and the entire process time will be shortened. Furthermore, the spray gun of the present invention can also be extended into and out of the pipe for repeated spraying, and the coating sprayed multiple times will not be damaged by the movement of the spray gun.

The present invention further provides a method for spraying polymer paint in a pipeline, including the following steps: providing a pipeline and a spray gun module, wherein the spray gun module has a frame, including a spray gun, a paint delivery pipe, and a first magnetic generating unit And a second magnetism generating unit, the paint delivery pipe is connected to the spray gun, and the first magnetism generating unit is used to be fixed on the frame and arranged around the pipe, and the second magnetism generating unit is used for sheathing On the spray gun; move one of a pipe and a spray gun module to make the first magnetism generating unit and the second magnetism generating unit move simultaneously, the second magnetism generating unit corresponding to the first magnetism generating unit, and The magnetic action between the first and second magnetism generating units makes the spray gun positioned on the axis of the pipe; and when the spray gun extends into the pipe, spraying is started.

To sum up, it only describes the preferred implementations or examples of the technical means adopted by the present invention to solve the problems, and is not used to limit the scope of implementation of the patent of the present invention. That is to say, all the equivalent changes and modifications made in accordance with the scope of the patent application of the present invention or made in accordance with the scope of the patent of the present invention are covered by the scope of the present patent.

1‧‧‧Polymer paint spraying device in pipeline

10‧‧‧Pipe

12‧‧‧Support frame

120‧‧‧Coating

13‧‧‧Mobile control unit

130‧‧‧Walking frame

15‧‧‧Spray unit

155‧‧‧Paint Can

159‧‧‧Spray Gun Module

1591‧‧‧The first magnetic generating unit

1592‧‧‧Second Magnetic Generating Unit

1593‧‧‧Paint delivery pipe

1594‧‧‧Spray gun

Claims (10)

A spraying device for polymer paint in a pipeline, comprising: a pipeline; a spray gun module, including a frame, a spray gun, a paint delivery pipe, a first magnetism generating unit and a second magnetism generating unit, wherein the paint is conveyed The tube is connected to the spray gun, the first magnetism generating unit is used to be fixed on the frame and arranged around the pipe, and the second magnetism generating unit is used to sleeve the spray gun; a movement control unit is used To move one of the pipe and the spray gun module, the first magnetism generating unit and the second magnetism generating unit are moved simultaneously. The second magnetism generating unit corresponds to the first magnetism generating unit, and the The repulsive magnetic action between the first and second magnetism generating units makes the spray gun levitate and position on the axis of the pipe, so that the spray gun and the paint delivery pipe will not contact the inner wall of the pipe; and a support frame , To support the other of the pipe and the spray gun module. As described in the first item of the scope of patent application, the polymer paint spraying device in the pipeline, wherein when the first magnetic generating unit includes at least three first magnetic elements, the second magnetic generating unit also includes at least three second magnetic elements And when the three second magnetic elements respectively correspond to the three first magnetic elements, the magnetic effects between the first and second magnetism generating units can repel each other. For example, the polymer paint spraying device in the pipeline described in the second item of the scope of patent application, wherein if the pipeline has paramagnetism, the three first magnetic elements will conduct the magnetic permeability of the pipeline. As described in the first item of the scope of patent application, the polymer paint spraying device in the pipeline, wherein the first and second magnetic generating units are permanent magnets or electromagnets. The polymer paint spraying device in the pipeline as described in the first item of the scope of patent application, wherein: when the movement control unit moves the pipeline, the first magnetism generating unit is fixed on the support frame by the frame, and The second magnetism generating unit is fixed on the support frame by the spray gun and the paint delivery pipe; and, when the movement control unit moves the spray gun module, the first magnetism generating unit is formed by the frame body It is fixed on the movement control unit, and the second magnetism generating unit is fixed on the movement control unit by the spray gun and the paint delivery pipe. For example, the polymer coating spraying device in the pipeline described in the first item of the scope of patent application, wherein the diameter of the pipeline is 2 to 20 inches and the length of the pipeline is 3 meters to 15 meters. A spraying device for polymer paint in a pipeline, comprising: a pipeline; a spray gun module, including a spray gun, a paint delivery pipe, a plurality of first magnetism generating units and a plurality of second magnetism generating units, wherein the paint delivery pipe is connected In the spray gun, the first magnetism generating units are used to sequentially surround the pipe, and the second magnetism generating units are used to sequentially nest the spray gun and the paint delivery pipe to adjust the first The repulsion or attraction between the magnetism generating unit and the second magnetism generating units causes the spray gun, the paint conveying pipe and the first magnetism generating units of the spray gun module to move forward or backward, The spray gun and the paint delivery pipe are also positioned on the axis of the pipe; and a support frame is used to support the pipe and the first magnetic generating units. For example, the polymer paint spraying device in the pipeline as described in item 7 of the scope of patent application, wherein when the paint delivery pipe is a hollow hose, the spraying unit is used for spraying the pipe with a bend. A method for spraying polymer paint in a pipeline includes the following steps: providing a pipeline and a spray gun module, wherein the spray gun module has a frame, including a spray gun, a paint delivery pipe, a first magnetic generating unit and a second A magnetic generating unit, the paint delivery pipe is connected to the spray gun, and the first magnetic generating unit is used to be fixed on the frame and arranged around the pipe, and the second magnetic generating unit is used to sleeve the spray gun ; Move one of a pipe and a spray gun module so that the first magnetic generating unit and the second magnetic generating unit move simultaneously, the second magnetic generating unit corresponds to the first magnetic generating unit, and the first and Repulsion between the second magnetic generating units The magnetic effect of the spray gun makes the spray gun suspended and positioned on the axis of the pipe, so that the spray gun and the paint delivery pipe will not contact the inner wall of the pipe; and when the spray gun extends into the pipe, spraying is started. The method for spraying polymer paint in pipelines as described in item 9 of the scope of patent application, wherein when the first magnetic generating unit includes at least three first magnetic elements, the second magnetic generating unit also includes at least three second magnetic elements And when the three second magnetic elements respectively correspond to the three first magnetic elements, the magnetic effects between the first and second magnetism generating units can repel each other.

Images