Steel pipe inner wall treatment device based on high-energy laser

Abstract

The utility model discloses a steel pipe inner wall treatment device based on high-energy laser, which relates to the technical field of steel pipe inner wall treatment and comprises a laser treatment device, a gas supply device, a dust removal device and a trolley in the pipe, the whole process is high in automation degree, low in working labor intensity and high in efficiency, and few dust and harmful gas are discharged in the treatment process; the treatment process is protected by nitrogen and is closed after treatment, so that the inner wall can be prevented from being oxidized; in the high-energy laser treatment process, high-temperature metal is protected by blowing nitrogen in real time, certain nitriding can be promoted to be generated on the inner wall, and enhancement of the surface of the inner wall is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of steel pipe inner wall treatment technology, and in particular to a steel pipe inner wall treatment device based on high-energy laser. Background Technology

[0002] With the rapid development of petrochemical, marine engineering, and energy transportation industries, the requirements for corrosion resistance and wear resistance of pipelines are becoming increasingly stringent. Lining steel pipes with polymer composite materials or ceramic coatings has become the mainstream process in the industry, and its performance directly depends on the quality of the pretreatment of the inner wall of the base steel pipe. Traditional inner wall pretreatment processes have significant technical bottlenecks: mechanical grinding causes significant damage to the pipe wall and easily generates metal dust pollution; while chemical pickling can effectively remove the oxide layer, it faces strict environmental regulations. Therefore, a technology is needed to overcome this deficiency. Utility Model Content

[0003] The purpose of this invention is to provide a steel pipe inner wall treatment device based on high-energy laser in order to solve the above problems.

[0004] To address the aforementioned problems, this utility model provides a technical solution: a steel pipe inner wall treatment device based on high-energy laser, comprising a laser treatment device, a gas supply device, a dust removal device, and an in-pipe trolley; the in-pipe trolley is disposed within the steel pipe, and a take-up reel is provided on the right side of the steel pipe; the laser treatment device, the gas supply device, and the dust removal device are all connected to the in-pipe trolley; the specific structure of the in-pipe trolley includes an installation chamber, elastic arms, drive wheels, springs, and an installation tube; the installation tube is fixedly connected to the installation chamber; three elastic arms are hinged in a circular array on the outer surface of the right end of the installation tube; springs are connected between each elastic arm and the installation chamber; a drive wheel is connected to the other end of each elastic arm, and the drive wheel contacts the steel pipe.

[0005] Preferably, the laser processing device comprises a rotatable laser head, a laser generator, and a laser fiber; the rotatable laser head is movably connected to the left side of the mounting tube; the laser fiber is disposed in the mounting tube; one end of the laser fiber is connected to the rotatable laser head, and the other end is connected to the laser generator via a take-up reel.

[0006] Preferably, the gas supply device comprises a nitrogen nozzle, a gas supply unit, and a gas supply pipe; the nitrogen nozzle is connected to the left side of the mounting pipe; the gas supply pipe is installed in the mounting pipe; one end of the gas supply pipe is connected to the nitrogen nozzle, and the other end is connected to the gas supply unit via a take-up reel.

[0007] Preferably, the dust removal device comprises a miniature vortex blower, an annular negative pressure chamber, an exhaust pipe, and a filter; the miniature vortex blower is connected to the left side of the mounting pipe, and the annular negative pressure chamber is connected to the miniature vortex blower; the exhaust pipe is disposed in the mounting pipe; one end of the exhaust pipe is connected to the miniature vortex blower, and the other end is connected to the filter via a take-up reel; the filter is connected to the air supply unit via a pipe.

[0008] Preferably, the laser generator has a power of 5-8KW, and the rotatable laser head is a 45mm universal laser head.

[0009] Preferably, the gas supply unit is an external nitrogen supply device with a gas flow rate of 5-10 L / min. The nitrogen nozzle and the gas supply pipe are connected by a movable seal, and the blowing direction of the nitrogen nozzle always points to the laser processing position.

[0010] Preferably, the micro vortex blower has a vacuum degree of -50kPa to 100kPa and a flow rate of 5 to 10L / min. The exhaust port of the micro vortex blower is equipped with a gas-solid separation device, which achieves gas-solid separation through electrostatic adsorption filter.

[0011] The beneficial effects of this utility model are: the whole process of this utility model has a high degree of automation, low labor intensity, high efficiency, and low emission of dust and harmful gases during the processing; the process is protected by nitrogen and sealed after processing to prevent oxidation of the inner wall; during the high-energy laser processing, the high-temperature metal is protected by nitrogen in real time, which can promote a certain amount of nitriding of the inner wall and help to strengthen the inner wall surface. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] 1-Steel pipe; 2-Rotating laser head; 3-Nitrogen nozzle; 4-Miniature vortex fan; 5-Annular negative pressure chamber; 6-Installation chamber; 7-Elastic arm; 8-Drive wheel; 9-Spring; 10-Installation pipe; 11-Exhaust pipe; 12-Laser generator; 13-Gas supply unit; 14-Filter; 15-Laser fiber; 16-Gas supply pipe; 17-Take-up reel. Detailed Implementation

[0014] like Figure 1As shown, this specific embodiment adopts the following technical solution: a steel pipe inner wall treatment device based on high-energy laser, including a laser treatment device, a gas supply device, a dust removal device, and an inner pipe trolley; the inner pipe trolley is set in the steel pipe 1, and a take-up reel 17 is provided on the right side of the steel pipe 1; the laser treatment device, the gas supply device, and the dust removal device are all connected to the inner pipe trolley; the specific structure of the inner pipe trolley includes an installation chamber 6, elastic arms 7, drive wheels 8, springs 9, and an installation tube 10; the installation tube 10 is fixedly connected in the installation chamber 6; three elastic arms 7 are hinged in a circular array on the outer surface of the right end of the installation tube 10; springs 9 are connected between each elastic arm 7 and the installation chamber 6; drive wheels 8 are connected to the other end of each elastic arm 7, and the drive wheels 8 are in contact with the steel pipe 1.

[0015] like Figure 1 As shown, the specific structure of the laser processing device includes a rotatable laser head 2, a laser generator 12, and a laser fiber 15; the rotatable laser head 2 is movably connected to the left side of the mounting tube 10; the laser fiber 15 is disposed in the mounting tube 10; one end of the laser fiber 15 is connected to the rotatable laser head 2, and the other end is connected to the laser generator 12 via a take-up reel 17.

[0016] like Figure 1 As shown, the specific structure of the gas supply device includes a nitrogen nozzle 3, a gas supply machine 13, and a gas supply pipe 16; the nitrogen nozzle 3 is connected to the left side of the mounting pipe 10; the gas supply pipe 16 is installed in the mounting pipe 10; one end of the gas supply pipe 16 is connected to the nitrogen nozzle 3, and the other end is connected to the gas supply machine 13 via a take-up reel 17.

[0017] like Figure 1 As shown, the specific structure of the dust removal device includes a miniature vortex blower 4, an annular negative pressure chamber 5, an exhaust pipe 11, and a filter 14; the miniature vortex blower 4 is connected to the left side of the mounting pipe 10, and the annular negative pressure chamber 5 is connected to the miniature vortex blower 4; the exhaust pipe 11 is installed in the mounting pipe 10; one end of the exhaust pipe 11 is connected to the miniature vortex blower 4, and the other end is connected to the filter 14 through a take-up reel 17; the filter 14 is connected to the air supply unit 13 through a pipe.

[0018] The laser generator 12 has a power of 5-8KW, and the rotatable laser head 2 is a 45mm universal laser head. The gas supply unit 13 is an external nitrogen supply device with a gas flow rate of 5-10L / min. The nitrogen nozzle 3 and the gas supply pipe 16 are connected by a movable seal, and the blowing direction of the nitrogen nozzle 3 always points to the laser processing position. The micro vortex fan 4 has a vacuum degree of -50kPa to 100kPa and a flow rate of 5-10L / min. The exhaust port of the micro vortex fan 4 is equipped with a gas-solid separation device, which achieves gas-solid separation through electrostatic adsorption filter.

[0019] The utility model is used as follows: In use, the laser treatment device, gas supply device, and dust removal device are activated. The trolley inside the pipe begins to move, carrying the laser treatment device and other components to treat the pipe wall. The laser treatment device emits a high-energy laser to remove oil and rust from the inner wall of the steel pipe. The gas supply device blows away the contaminants while simultaneously performing nitriding protection on the inner wall of the steel pipe heated by the high-energy laser. The generated contaminants are then sucked out by the dust removal device. The inner wall surface treatment is completed as the trolley moves from one end of the steel pipe to the other. After treatment, the flanges at both ends are sealed with a thin film to prevent oxidation.

[0020] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0021] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications may be made to this utility model without departing from its spirit and scope. All such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

[0023] The control method of this utility model is to control the device by manually starting and stopping the switch. The wiring diagram of the power element and the supply of power are common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and wiring layout will not be explained in detail.

Claims

1. A device for treating the inner wall of a steel pipe based on high-energy laser, characterized in that: It includes a laser processing unit, a gas supply unit, a dust removal unit, and an in-tube trolley; The trolley inside the pipe is set in the steel pipe (1), and a take-up reel (17) is provided on the right side of the steel pipe (1). The laser processing device, gas supply device, and dust removal device are all connected to the trolley inside the tube. The specific structure of the trolley inside the tube includes an installation chamber (6), an elastic arm (7), a drive wheel (8), a spring (9), and an installation tube (10). An installation pipe (10) is fixedly connected in the installation chamber (6); Three elastic arms (7) are hinged in a circular array on the outer surface of the right end of the mounting tube (10). A spring (9) is connected between the elastic arm (7) and the mounting chamber (6); Each of the elastic arms (7) is connected to a drive wheel (8) at the other end, and the drive wheel (8) is in contact with the steel pipe (1).

2. The steel pipe inner wall treatment device based on high-energy laser according to claim 1, characterized in that: The specific structure of the laser processing device includes a rotatable laser head (2), a laser generator (12), and a laser fiber (15). A rotatable laser head (2) is movably connected to the left side of the mounting tube (10); The laser fiber (15) is disposed in the mounting tube (10); One end of the laser fiber (15) is connected to the rotatable laser head (2), and the other end is connected to the laser generator (12) via the take-up reel (17).

3. The steel pipe inner wall treatment device based on high-energy laser according to claim 1, characterized in that: The specific structure of the gas supply device includes a nitrogen nozzle (3), a gas supply machine (13), and a gas supply pipe (16). A nitrogen nozzle (3) is connected to the left side of the mounting pipe (10); The gas supply pipe (16) is installed in the installation pipe (10); One end of the gas supply pipe (16) is connected to the nitrogen nozzle (3), and the other end is connected to the gas supply machine (13) via the take-up reel (17).

4. The steel pipe inner wall treatment device based on high-energy laser according to claim 1, characterized in that: The dust removal device has a specific structure including a micro vortex fan (4), an annular negative pressure chamber (5), an exhaust pipe (11), and a filter (14). The left side of the mounting pipe (10) is connected to a micro vortex fan (4), and the micro vortex fan (4) is connected to an annular negative pressure chamber (5). The exhaust pipe (11) is disposed in the mounting pipe (10); One end of the exhaust pipe (11) is connected to the micro vortex fan (4), and the other end is connected to the filter (14) via the take-up reel (17); The filter (14) is connected to the gas supply unit (13) via a pipe.

5. The steel pipe inner wall treatment device based on high-energy laser according to claim 2, characterized in that: The laser generator (12) has a power of 5-8KW, and the rotatable laser head (2) is a 45mm universal laser head.

6. The steel pipe inner wall treatment device based on high-energy laser according to claim 3, characterized in that: The gas supply unit (13) is an external nitrogen supply device with a gas flow rate of 5-10 L / min. The nitrogen nozzle (3) and the gas supply pipe (16) are connected by a movable seal, and the blowing direction of the nitrogen nozzle (3) always points to the laser processing position.

7. The steel pipe inner wall treatment device based on high-energy laser according to claim 4, characterized in that: The micro vortex blower (4) has a vacuum of -50kPa to 100kPa and a flow rate of 5 to 10L / min. The exhaust port of the micro vortex blower (4) is equipped with a gas-solid separation device, which achieves gas-solid separation through electrostatic adsorption filter.

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