Large pipeline heat treatment temperature rise and heat preservation integrated inductor

Abstract

The utility model relates to the electrical field, and discloses a large pipeline heat treatment temperature rise and heat preservation integrated inductor which comprises an inductor body, the inductor body is a cube and is provided with two side end plates opposite to each other left and right, a front end plate and a rear end plate opposite to the front end plate, and the inductor body is provided with a pipeline containing cavity. The pipeline accommodating cavity penetrates through the front end plate and the rear end plate, and is characterized in that the inner wall of the pipeline accommodating cavity is a knotting layer with an insulating property, and a cylindrical inner hole for accommodating a steel pipe to be processed is formed; a heating section induction coil, a magnetic shielding ring and a heat preservation section induction coil which are sequentially arranged from front to back in the axial direction of the knotting layer are embedded in the knotting layer and are integrally connected. The heating belt shielding ring and the heat preservation belt shielding ring are of an integral structure, one-time hoisting, installation and water and electricity connection can be achieved, and concentricity adjustment can be omitted. When a factory needs to produce steel pipes with different sizes, the work of field equipment and operators is greatly simplified, the fault probability is reduced, and the quality of steel pipe heat treatment products is improved.

Description

Technical Field

[0001] The utility model belongs to the electrical field, and in particular relates to a device for induction heating of heat treatment of metal pipelines. Background Art

[0002] Existing sensors generally use two independent induction coils and independent magnetic shielding rings. The distance between the heating section induction coil and the insulation section induction coil is relatively far, and there is no insulation in between. After the metal pipe comes out of the heating section induction coil and before entering the insulation section induction coil, the temperature drops significantly, which does not meet the requirements of the heat treatment process.

[0003] When different pipelines need to be produced and the induction coil needs to be replaced, the three components, namely the heating section induction coil, the insulation section induction coil and the shielding ring, need to be replaced, and all three components need to be mechanically aligned during installation. The workload of mechanical installation and electrical and water connection is large. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a large-scale pipeline heat treatment heating and insulation integrated sensor, which designs the heating section induction coil, the insulation section induction coil and the magnetic shielding ring as an integrated structure, brazes the screw on each turn of the coil and the magnetic shielding ring, and uses a plurality of high-temperature resistant axial peripheral support bars for positioning to form a complete whole. The heating and insulation belt shielding ring is an integrated structure that can be lifted, installed and connected to water and electricity at one time, and the concentricity adjustment can be eliminated. When the factory needs to produce steel pipes of different sizes, the work of on-site equipment and operators is greatly simplified, and the probability of failure is reduced, and the quality of steel pipe heat treatment products is improved.

[0005] The technical solution adopted by the utility model to solve the above-mentioned technology is: to provide a large-scale pipeline heat treatment heating and insulation integrated sensor, including a sensor body, the sensor body is a cube, has two left and right opposite side end plates, a front end plate and a rear end plate opposite to the front end plate, the sensor body has a pipeline accommodating cavity, the pipeline accommodating cavity runs through the front end plate and the rear end plate, and is characterized in that: the inner wall of the pipeline accommodating cavity is a knotted layer with insulating properties, forming a cylindrical inner hole for accommodating the steel pipe to be treated; the knotted layer is embedded with a heating section induction coil, a magnetic shielding ring and a heat preservation section induction coil arranged in sequence from front to back along its axial direction, and the three are connected as one.

[0006] According to the utility model, further, the inner surfaces of the heating section induction coil, the magnetic shielding ring and the insulation section induction coil are embedded in the knotted layer, and the outer surfaces coincide with the outer peripheral surface of the knotted layer, and high-temperature resistant cross braces 150 are arranged on the outer surfaces of the heating section induction coil, the magnetic shielding ring and the insulation section induction coil to fix the three into an integrated structure.

[0007] According to the utility model, further, the high temperature resistant cross brace is arranged along the axial direction of the knotted layer, and passes through the heating section induction coil, the magnetic shielding ring and the insulation section induction coil in sequence from front to back, fixing the three into an integrated structure.

[0008] According to the utility model, further, the outer surface of the side end plate is provided with a first connecting copper busbar for energizing the induction coil of the heating section; the outer surface of the side end plate is also provided with a second connecting copper busbar for energizing the induction coil of the insulation section.

[0009] According to the utility model, further, two pairs of cooling water interfaces are opened on the surface of the side end plate, which correspond to the induction coil of the heating section and the induction coil of the insulation section respectively, and are used for cooling the corresponding induction coils.

[0010] According to the utility model, further, three pairs of cooling water interfaces are opened on the surface of the side end plate, two pairs of cooling water interfaces correspond to the induction coils in the heating section, and one pair of cooling water interfaces corresponds to the induction coils in the insulation section, for cooling the corresponding induction coils.

[0011] According to the utility model, further, relative induction coil fixing plates are arranged on the outer peripheral surfaces of the heating section induction coil, magnetic shielding ring and insulation section induction coil, and the induction coil fixing plates are fitted with the corresponding coil or magnetic shielding ring at the top and fixed with the fixing surface at the bottom.

[0012] According to the utility model, further, the induction coil fixing plates are multiple and distributed along the axial direction of the knotted layer.

[0013] According to the utility model, further, a hanging ring is arranged on the top of the sensor body.

[0014] According to the utility model, further, an infrared temperature measuring hole is opened in the side end plate, penetrating the outer peripheral surface of the knotted layer to its inner surface, and the temperature of the steel pipe is detected by an infrared thermometer.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. The induction coil of the heating section, the induction coil of the insulation section, and the magnetic shielding ring are processed into an integral structure, and the water channel and circuit structure are greatly simplified, which is convenient for users to lift, replace, and repair; the product reliability is also improved.

[0017] 2. The utility model uses high-temperature refractory knotting material to solidify the heating section induction coil, the insulation section induction coil and the magnetic shielding ring together to form a whole. At the same time, the refractory knotting layer also has insulation, heat resistance, wear resistance and certain thermal insulation effects.

[0018] 3. The utility model can be applied to the online or offline heat treatment of various metal material pipes such as austenite, ferrite, martensite, duplex steel, titanium alloy, etc., and is applicable to various pipe diameters.

[0019] 4. It solves the defects of traditional equipment in the field application process, improves product reliability, improves the on-site working environment, and improves the quality of steel pipes produced by users. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of the large-scale pipeline heat treatment heating and heat preservation integrated sensor of the utility model;

[0021] Figure 2 for Figure 1 A side view structural schematic diagram of;

[0022] in:

[0023] 100-sensor body, 110-side end plate, 111-first connecting copper bar, 112-second connecting copper bar, 113-cooling water interface, 120-front end plate, 130-rear end plate, 140-pipe accommodating cavity, 141-knotting layer, 142-heating section induction coil, 143-magnetic shielding ring, 144-insulation section induction coil, 150-high temperature resistant cross brace, 160-induction coil fixing plate, 170-hanging ring, 180-infrared temperature measuring hole, 190-bottom plate, 191-screw hole. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to this application.

[0025] like Figure 1-2As shown, the utility model provides a large-scale pipeline heat treatment heating and heat preservation integrated sensor, including a sensor body 100, the sensor body 100 is a cube, with two side end plates 110 opposite to each other, a front end plate 120 and a rear end plate 130 opposite to the front end plate 120, and the sensor body 100 has a pipeline accommodating cavity 140, the pipeline accommodating cavity 140 penetrates the front end plate 120 and the rear end plate 130, and is used to place metal pipelines and perform heat treatment on the pipelines. The inner wall of the pipeline accommodating cavity 140 is a knotted layer 141 with high temperature resistant insulation performance, forming a solid cylindrical inner hole, and the steel pipe passes through this inner hole, and the heat treatment process is completed after being heated and insulated; it has a certain heat preservation and heat insulation capacity, which can prevent the temperature of the steel pipe from excessively dropping in the middle section; the knotted layer 140 is embedded with a heating section induction coil 142, a magnetic shielding ring 143 and a heat preservation section induction coil 144 arranged in sequence from front to back along its axial direction, and the three are connected in one piece. Among them, the heating section induction coil 142 is connected to the heating section medium frequency induction heating power supply, the coil is wound by a rectangular hollow copper tube with a certain wall thickness, the outer wall is passed through a medium frequency current, and the copper tube is cooled by water; the magnetic shielding ring 143 has a closed circuit inside, which is wound by a rectangular hollow copper tube with a certain wall thickness, and the copper tube is cooled by water; the insulation section induction coil 144 is connected to the insulation section medium frequency induction heating power supply, the coil is wound by a rectangular hollow copper tube with a certain wall thickness, the outer wall is passed through a medium frequency current, and the copper tube is cooled by water. The heating section induction coil 142 is used to heat the metal pipe, and the insulation section induction coil 144 is used to heat the metal pipe to meet the process requirements of metal heat treatment. The heating current or power of these two channels can be controlled independently, so they can be suitable for different metal pipe diameters and different heat treatment temperatures. A magnetic shielding ring 143 is set between the two to reduce the mutual coupling and interference between the heating section induction coil 142 and the insulation section induction coil 144. At the same time, certain measures are taken in the power supply to ensure stable and reliable operation of the system.

[0026] The heating section induction coil 142 and the insulation section induction coil 144 can be wrapped with multiple layers of alkali-free glass fiber tape on the coil copper tube and impregnated with high-temperature insulating varnish for curing, so that even when the knotted lining cracks, metal pipe oxides or foreign objects enter the coil, the coil copper tube can be prevented from discharging.

[0027] Furthermore, the inner surfaces of the heating section induction coil 142, the magnetic shielding ring 143 and the insulation section induction coil 144 are embedded in the knotting layer 140, and the outer surfaces coincide with the outer peripheral surface of the knotting layer 140. High temperature resistant cross braces 150 are arranged on the outer surfaces of the three to fix the three into an integrated structure. Preferably, the high temperature resistant cross braces 150 are arranged along the axial direction of the knotting layer 140, and sequentially penetrate the heating section induction coil 142, the magnetic shielding ring 143 and the insulation section induction coil 144 from front to back to fix the three into an integrated structure. Specifically, according to the size of the sensor pipe accommodating cavity 140, 2 to 12 high temperature resistant cross braces 150 can be designed, evenly distributed around the circumference.

[0028] Furthermore, a first connecting copper bus 111 for energizing the induction coil 142 of the heating section is provided on the surface of the side end plate 110 facing outward, and is connected to the medium-frequency induction heating power supply of the heating section by a water-cooling cable assembly; a second connecting copper bus 112 for energizing the induction coil 144 of the insulation section is also provided on the surface of the side end plate 110 facing outward on the same side, and is connected to the medium-frequency induction heating power supply of the insulation section by a water-cooling cable assembly.

[0029] Furthermore, a cooling water interface 113 is provided on the surface of the side end plate 110 . There are two pairs of cooling water interfaces 113 , which correspond to the heating section induction coil 142 and the insulation section induction coil 144 respectively, and are used to cool down the corresponding induction coils.

[0030] In this embodiment, in order to make the utility model applicable to larger power, the cooling water interface 113 is three pairs, two pairs are connected to the temperature rising section induction coil 142, and one pair is connected to the heat preservation section induction coil 144.

[0031] Furthermore, the front end plate 120 is made of an aluminum alloy plate, which is relatively thick and has good anti-collision performance, and is grooved at the top and bottom to prevent the formation of an eddy current circuit.

[0032] In order to prevent the heating section induction coil 142, the magnetic shielding ring 143 and the insulation section induction coil 144 from rotating along the outer peripheral surface of the knotting layer 140, a relative induction coil fixing plate 160 is arranged on the outer peripheral surface of the three, and the heating section induction coil 142, the magnetic shielding ring 143 and the insulation section induction coil 144 are clamped to avoid rotational displacement. There are multiple induction coil fixing plates 160, which are distributed along the axial direction of the knotting layer 140. Each induction coil fixing plate 160 is fitted with the corresponding coil or magnetic shielding ring 143 on the top and fixed with the load-bearing bottom plate on the bottom. The whole inductor has 6-8 induction coil fixing plates 160. Since the frequency of the high-power induction heating power supply used in large steel pipes is between 500Hz and 3000Hz, if the inductor is poorly designed, it will generate large noise. The induction coil fixing plate 160 and the overall refractory knotting structure of the utility model (i.e., the heating section induction coil, the magnetic shielding ring and the insulation section induction coil are embedded in the knotting layer) can reduce noise to a great extent.

[0033] In order to facilitate the movement of the sensor body 100, a lifting ring 170 is provided on the top of the sensor body 100 so that the sensor can be lifted as a whole. Preferably, there are four lifting rings 170 evenly distributed around the circumference.

[0034] In order to facilitate the installation of the sensor body 100, a bottom plate 190 is fixedly connected to the bottom of the sensor body 100. The bottom plate 190 is provided with mounting screw holes 191 for fixing the sensor body 100 to the tooling bracket of the production line.

[0035] In order to facilitate temperature monitoring of the steel pipe to be heat treated, an infrared temperature measuring hole 180 is provided on the side end plate 110, penetrating the outer peripheral surface of the knotting layer 140 to its inner surface, and the temperature of the steel pipe can be detected by an infrared thermometer. Preferably, there are three infrared temperature measuring holes 180, which respectively monitor the heating outlet temperature of the heating section, the inlet temperature of the insulation section, and the outlet temperature of the insulation section.

[0036] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A large-scale pipeline heat treatment temperature rise and heat preservation integrated sensor, including a sensor body, the sensor body is a cube, has two side end plates opposite to each other, a front end plate and a rear end plate opposite to the front end plate, the sensor body has a pipeline accommodating cavity, the pipeline accommodating cavity passes through the front end plate and the rear end plate, and is characterized in that: The inner wall of the pipe accommodating cavity is a knotted layer with insulating properties, forming a cylindrical inner hole for accommodating the steel pipe to be processed; the knotted layer is embedded with a heating section induction coil, a magnetic shielding ring and a heat preservation section induction coil arranged in sequence from front to back along its axial direction, and the three are connected as one.

2. A large-scale pipeline heat treatment temperature rise and heat preservation integrated sensor as claimed in claim 1, characterized in that: The inner surfaces of the heating section induction coil, the magnetic shielding ring and the insulation section induction coil are embedded in the knotted layer, and the outer surfaces coincide with the outer peripheral surface of the knotted layer. High temperature resistant cross braces (150) are arranged on the outer surfaces of the heating section induction coil, the magnetic shielding ring and the insulation section induction coil to fix the three into an integrated structure.

3. A large-scale pipeline heat treatment temperature rise and heat preservation integrated sensor as claimed in claim 2, characterized in that: The high temperature resistant cross brace is arranged along the axial direction of the knotted layer, and passes through the heating section induction coil, the magnetic shielding ring and the insulation section induction coil in sequence from front to back, fixing the three into an integrated structure.

4. A large-scale pipeline heat treatment temperature rise and heat preservation integrated sensor as claimed in claim 1, characterized in that: The outer surface of the side end plate is provided with a first connecting copper bar for energizing the induction coil of the heating stage; the outer surface of the side end plate is also provided with a second connecting copper bar for energizing the induction coil of the insulation stage.

5. A large-scale pipeline heat treatment temperature rise and heat preservation integrated sensor as claimed in claim 1 or 4, characterized in that: The side end plate surface is provided with two pairs of cooling water interfaces, which correspond to the induction coils in the heating section and the induction coils in the insulation section respectively, and are used to cool down the corresponding induction coils.

6. A large-scale pipeline heat treatment temperature rise and heat preservation integrated sensor as claimed in claim 1 or 4, characterized in that: The side end plate surface is provided with three pairs of cooling water interfaces, two pairs of cooling water interfaces correspond to the induction coils in the heating section, and one pair of cooling water interfaces corresponds to the induction coils in the insulation section, for cooling the corresponding induction coils.

7. The large-scale pipeline heat treatment temperature rise and heat preservation integrated sensor as claimed in claim 1, characterized in that: Relative induction coil fixing plates are arranged on the outer peripheral surfaces of the heating section induction coil, magnetic shielding ring and insulation section induction coil. The upper side of the induction coil fixing plate is in contact with the corresponding coil or magnetic shielding ring and the lower side is fixed to the fixing surface.

8. A large-scale pipeline heat treatment temperature rise and heat preservation integrated sensor as claimed in claim 7, characterized in that: There are multiple induction coil fixing plates distributed along the axial direction of the knotted layer.

9. A large-scale pipeline heat treatment heating and heat preservation integrated sensor as described in any one of claims 1-4, 7-8, characterized in that: A hanging ring is arranged on the top of the sensor body.

10. The large-scale pipeline heat treatment temperature rise and heat preservation integrated sensor as claimed in claim 1, characterized in that: An infrared temperature measuring hole is opened in the side end plate, penetrating the outer peripheral surface of the knotted layer to its inner surface, and the temperature of the steel pipe is detected by an infrared thermometer.

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