Corrosion-resistant pipeline device adopting high-frequency induction cladding heating technology

Abstract

The invention discloses a high-frequency induction cladding heating anti-corrosion technology production method for the inner wall of a pipeline, and relates to the technical field of surface treatment. The device comprises an induction cladding device consisting of a cover plate, a driven roller, a high-frequency power supply, a control system, an induction coil, a travel switch, a driving roller, a track, a limiting roller, a speed reducer and a motor, when a pipeline is derusted, the travel switch is turned on, the pipeline is rotated by the driving roller and the driven roller together, and the induction coil is heated by the high-frequency power supply, so that the pipeline is derusted; after the pipeline is heated to the expected temperature, the anti-corrosion coating is evenly sprayed on the inner wall of the pipeline through the feeding device, the cover plate is arranged on the rear side of the pipeline, the axial position of the pipeline is fixed through the limiting roller, then the pipeline is heated through the induction coil and continuously rotates at a constant speed, and the inner wall of the pipeline is evenly coated with the anti-corrosion coating so that the expected anti-corrosion function can be achieved. By arranging the induction cladding device, the problem that an existing pipeline is prone to being corroded during use is effectively solved, meanwhile, operation is single, a user can easily master the pipeline, the structure is simple, and later maintenance is facilitated.

Description

Technical Field

[0001] The present invention belongs to the field of anti-corrosion pipeline production, and particularly relates to a device for producing anti-corrosion pipelines by high-frequency induction cladding heating technology. Background Art

[0002] With the development of industries such as aerospace, electric power, coal, construction, metallurgy, and agriculture, the demand for anti-corrosion pipelines is increasing. Mainly aiming at the scientific research and equipment development of anti-corrosion and wear-resistant technologies, it is intended to solve the scientific problems of easy corrosion and wear of metal pipelines in highly corrosive enterprises such as chemical industry, coal, and cement in the Eighth Division. Traditional anti-corrosion pipeline production technologies mainly include centrifugal casting, self-propagating centrifugal casting, cast stone, pasting ceramic chips, spot welding and clamping ceramic chips, high-frequency quenching, etc. These production processes all have their inherent disadvantages, such as expensive equipment, high energy consumption, the anti-corrosion layer is not impact-resistant, the service life of the anti-corrosion layer is short, the bonding strength between the anti-corrosion layer and the base pipe is low, the production environment is harsh, the production efficiency is low, the environmental pollution is serious, there are certain restrictions on the pipeline diameter, and the length of a single section of pipeline is short. In addition to the problem of fast wear of the anti-corrosion layer, when transporting strongly corrosive gases, liquids or solids, there is also the problem that the corrosion resistance of the wear-resistant pipeline is poor and it is quickly damaged. With the increasing requirements of various industries for anti-corrosion pipelines such as wear resistance, high temperature resistance, impact resistance, and environmental protection, the above-mentioned traditional processes can no longer meet the needs of the development of the times. Therefore, the research and development of various new production technologies are essential. Therefore, an induction cladding device that can perform high-frequency induction hot cladding on pipelines and improve the anti-corrosion ability of pipelines is proposed. Summary of the Invention

[0003] In order to enhance the current anti-corrosion ability of pipelines, the present invention provides an induction cladding device, which can not only uniformly heat the pipelines, but also provide convenient operation for users.

[0004] To achieve the above object, the present invention is realized by the following technical solutions: An induction cladding device composed of rollers, a motor, a cover plate, a high-frequency power supply, an induction coil, a reducer, and a feeding device. When the pipeline is fixed on the track, the motor drives the travel switch to make the driving roller and the driven roller drive the pipeline to rotate uniformly. Then, the high-frequency power supply makes the induction coil heat up to heat the inner wall of the pipeline. The coating is sprayed on the inner wall of the pipeline through the feeding device, so that the anti-corrosion coating is evenly hot-pressed on the inner wall of the pipeline, and a layer of anti-corrosion coating is evenly applied to the inner wall of the pipeline. Then, the rear cover plate is placed on the rear side of the pipeline, the front cover plate is placed on the front side of the pipeline, and the limit roller fixes the axial position of the pipeline at the lower section of the rear cover plate to heat the pipeline at a constant speed of rotation. After the cladding is completed, the reducer decelerates the rotating pipeline, and then the motor drags the processed anti-corrosion pipeline out of the device.

[0005] Further defined, the critical thickness is less than 15 mm.

[0006] Further defined, the nozzle needs to be demagnetized when using materials that avoid generating eddy currents, and then the powder is pushed to the nozzle by high-speed air flow.

[0007] Further defined, the power of the induction power supply is 50 - 130 Kw, and the frequency is 50 - 100 KHz.

[0008] An anti-corrosion pipeline device produced by a high-frequency induction cladding heating technology provided by the present invention mainly includes the following steps:

[0009] (1) Rust removal treatment is carried out on the inner wall of the pipeline;

[0010] (2) After the treatment is completed, the pipeline is placed on the track of the device flush with the left end of the induction coil, and the motor drives the roller to drive the pipeline to rotate at a constant speed. The rotation speed is generally 100 - 180 r / min. At the same time, the induction power supply on the right side is turned on, and the corresponding heating temperature is selected according to the pipeline material. Generally, the surface of the pipeline needs to be heated to 800 - 1500 °C;

[0011] (3) After heating to the required temperature, the powder feeding device is turned on to coat the inner wall of the pipeline. After the coating is completed, the right side of the pipeline is sealed with a rear cover plate, and at the same time, the limit roller restricts the pipeline from moving back and forth in the axial position;

[0012] (4) After the cladding is completed, the reducer decelerates the rotating pipeline. When the pipeline stops rotating, the motor drags the pipeline out and cools it to room temperature in the air, completing the high-frequency induction cladding of the inner wall of the pipeline.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] 1. It can effectively carry out anti-corrosion treatment on the pipeline before use;

[0015] 2. The operation is simple, and users can easily get started;

[0016] 3. The structure is simple and convenient for later maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required in the embodiments.

[0018] Figure 1 It is the top view of the anti-corrosion pipeline production equipment of the present invention;

[0019] Figure 2 It is the left view of the anti-corrosion pipeline production equipment of the present invention;

[0020] Figure 3 It is the structural schematic diagram of the front cover plate of the present invention;

[0021] Figure 4 Structural schematic diagram of the rear cover plate of the present invention;

[0022] Figure 5 Cross-sectional view of the pipeline after the powder of the present invention is evenly spread;

[0023] Figure 6 Cross-sectional view of the finished pipeline after the powder of the present invention is melted and clad on the inner wall. Specific embodiments

[0024] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present invention.

[0025] As Figure 1 shown, a device for preparing a corrosion-resistant pipeline by high-frequency induction cladding heating technology includes pipeline ①, coating device ②, rear cover plate ③, front cover plate ④, limiting roller ⑤, motor ⑥, travel switch ⑦, driving roller ⑧, driven roller ⑨, track ⑩, high-frequency power supply Induction coil Reducer Its characteristics are that pipeline ① is in contact with track ⑩, coating device ② is placed behind the pipeline, and its feeding pipe is coaxial with the pipeline. Rear cover plate ③ is solid, front cover plate ④ is hollow, limiting roller ⑤ is placed at the lower end behind the pipeline, motor ⑥ is connected to travel switch ⑦, driving roller ⑧, motor ⑥ and forming switch ⑦ are placed on the same side, driven roller ⑨ is placed on the other side, high-frequency power supply is connected to the induction coil and installed on the front side of the pipeline, reducer is connected to the motor and installed at the lower end of the front side of the pipeline.

[0026] Through the above technical solutions.

[0027] The described device for preparing a corrosion-resistant pipeline by high-frequency induction melting and heating technology is characterized in that two front and rear cover plates of the pipeline are provided on its operating device; one of the rear cover plates ③ is set to be solid to prevent the anti-corrosion coating from leaking out from the rear side; one of the front cover plates ④ is set to be hollow to facilitate the high-frequency power supply to drive the induction coil to generate heat and heat the inner wall of the pipeline.

[0028] The described device for preparing a corrosion-resistant pipeline using high-frequency induction melting and cladding heating technology is characterized in that a number of rollers and motors are provided on its operating device; among them, the driving roller ⑧ is driven by the motor ⑥ and the travel switch ⑦ together; among them, the driven roller ⑨ is driven by the driving roller ⑧; to drive the pipeline to rotate evenly.

[0029] The described device for preparing a corrosion-resistant pipeline using high-frequency induction melting and cladding heating technology is characterized in that, according to the device for producing an anti-corrosion pipeline using the high-frequency induction melting and cladding heating technology described in claim 1, it is characterized in that: a feeding device ② is provided on its operating device at the rear side of the pipeline; among them, the feeding device is composed of a powder feeding pipe and a coating nozzle; the powder feeding pipe is coaxial with the pipeline ①.

[0030] The described device for preparing a corrosion-resistant pipeline using high-frequency induction melting and cladding heating technology is characterized in that a speed reducer is provided on its operating device To decelerate the pipeline after heating is completed.

[0031] Working principle: First, the pipeline is fixed on the track. The coating is sprayed on the inner wall of the pipeline through the feeding device. The rear cover plate is placed on one side behind the pipeline, and the front cover plate is placed on the front side of the pipeline. The limiting rollers fix the axial position of the pipeline. Then, the motor drives the travel switch to make the driving roller and the driven roller drive the pipeline to rotate evenly. The induction coil is heated by the high-frequency power supply to heat the inner wall of the pipeline, so that the anti-corrosion coating is evenly hot-applied on the inner wall of the pipeline. After meeting the engineering requirements, the speed reducer decelerates the rotating pipeline. After the pipeline stops rotating, it is taken out and cooled to room temperature in the air.

Claims

1. An anti-corrosion pipeline device produced by a high-frequency induction cladding heating technology, which consists of pipeline ①, coating device ②, rear cover plate ③, front cover plate ④, limit roller ⑤, motor ⑥, travel switch ⑦, driving roller ⑧, driven roller ⑨, ⑩ track, and high-frequency power supply Induction coil Reducer Composed of The features are as follows: The pipe ① is in contact with the track ⑩. The coating device ② is placed at the rear side of the pipe, and its feeding pipe is coaxial with the pipe. The rear cover plate ③ is solid, and the front cover plate ④ is hollow. The limiting roller ⑤ is placed at the lower end of the rear side of the pipe. The motor ⑥ is connected to the travel switch ⑦. The driving roller ⑧, the motor ⑥ and the forming switch ⑦ are placed on the same side, and the driven roller ⑨ is placed on the other side. The high-frequency power supply is connected to the induction coil and is installed on the front side of the pipe. The reducer is connected to the motor and is installed at the lower end of the front side of the pipe.

2. The anti-corrosion pipeline device produced by the high-frequency induction cladding heating technology according to claim 1, which is characterized in that: Two front and rear pipe covers are provided on its operating device; one of the rear covers ③ is set to be solid to prevent the anti-corrosion coating from leaking out from the rear side; one of the front covers ④ is set to be hollow to facilitate the high-frequency power supply to drive the induction coil to generate heat and heat the inner wall of its pipeline.

3. The anti-corrosion pipeline device produced by the high-frequency induction cladding heating technology according to claim 1, which is characterized in that : A number of rollers and motors are provided on its operating device; wherein the driving roller ⑧ is driven by the motor ⑥ and the travel switch ⑦ together; wherein the driven roller ⑨ is driven by the driving roller ⑧; driving the pipeline to rotate evenly.

4. The anti-corrosion pipeline device produced by the high-frequency induction cladding heating technology according to claim 1, which is characterized in that: A feeding device ② is provided on its operating device at the rear side of the pipeline; wherein the feeding device is composed of a powder feeding pipe and a coating nozzle; the powder feeding pipe is coaxial with the pipeline ①.

5. The anti-corrosion pipeline device produced by the high-frequency induction cladding heating technology according to claim 1, which is characterized in that: A speed reducer is provided on its operating device. After heating is completed, the pipeline is decelerated until it stops completely, and then it is removed and cooled to room temperature in the air to complete induction cladding.

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