Electromagnet of coal charging car

Abstract

The utility model belongs to the field of electromagnets, and relates to an electromagnet of a coal charging car, which has the characteristics of good heat dissipation effect and high reliability. According to the technical scheme, the device comprises a shell, an electromagnet, a magnetizer, a partition plate and cooling oil. The shell is a pipe fitting with an opening in the lower end, an oil guide channel is formed in the side wall of the shell, one end of the oil guide channel is communicated with one end of the interior of the shell, and the other end of the oil guide channel is communicated with the other end of the interior of the shell. The electromagnets are U-shaped electromagnets, the electromagnets are fixed in the shell in an array mode, each electromagnet comprises a plurality of silicon steel sheets and a coil, the silicon steel sheets are sequentially arranged in parallel, the silicon steel sheets are parallel to the vertical center line of the shell, and an oil passing gap is formed between every two adjacent silicon steel sheets. And the coil is wound to the outer sides of the plurality of silicon steel sheets to form an electromagnet.

Description

Technical Field

[0001] This utility model belongs to the field of electromagnets and relates to an electromagnet for a coal loading car. Background Technology

[0002] A coal charging car is a piece of equipment used in the coking process to transfer and add coal to the coke oven. The coal charging car is equipped with a cover-opening module, which allows the top cover of the coke oven to be opened to facilitate the addition of coal.

[0003] Currently, most furnace lid lifting modules use electromagnets to lift the lid. However, the furnace lid temperature is high, and the electromagnet may lose its magnetic force when the temperature exceeds 200℃ (the temperature of the electromagnet itself). In severe cases, this may cause the furnace lid to fall off and damage the equipment.

[0004] Generally, using heat-insulating felt at the lower end of the electromagnet and heat-resistant insulating materials for the electromagnet's excitation coil for thermal protection can significantly improve the safety factor of the cover-opening module and extend the electromagnet's lifespan. However, once the coal loading car's workload increases and the cover-opening module frequently contacts the furnace cover, there is still a possibility that the electromagnet's temperature will rise, causing a decrease in the reliability of the cover-opening module. The reason for this is that the electromagnet's iron core is in direct or indirect contact with the furnace cover, and a large amount of heat is conducted to the iron core. At the same time, the iron core's heat dissipation efficiency is low, resulting in the iron core itself being too hot, causing the electromagnet's magnetic force to decrease or even disappear completely. Utility Model Content

[0005] To overcome the shortcomings of the aforementioned related technologies, this utility model proposes an electromagnet for a coal loading car, which has the characteristics of good heat dissipation and high reliability.

[0006] To achieve the above technical objectives, this utility model provides an electromagnet for a coal loading car. The electromagnet for the coal loading car includes: a shell, an electromagnet body, a magnetic conductor, a partition plate, and cooling oil. The shell is a tubular fitting with an open lower end. An oil channel is provided on the side wall of the shell, one end of which is connected to one end inside the shell, and the other end of which is connected to the other end inside the shell. The electromagnet is a U-shaped electromagnet, and multiple electromagnets are arrayed and fixed inside the shell. Each electromagnet includes multiple silicon steel sheets and a coil. The multiple silicon steel sheets are arranged in parallel, and the silicon steel sheets are parallel to the vertical center line of the shell. An oil passage gap is provided between adjacent silicon steel sheets. The coil is wound around the outside of the multiple silicon steel sheets to form the electromagnet.

[0007] A magnetic conductor is fixed to the lower end of the outer casing. The magnetic conductor is in contact with the electromagnet, and the magnetic conductor and the outer casing are sealed together. A horizontal partition plate is arranged inside the outer casing between the two ends of the oil channel. The partition plate has multiple through holes, and an electromagnet is fixed in each through hole. The outer casing is filled with cooling oil.

[0008] Preferably, the cooling oil includes synthetic cooling oil; the width of the oil passage gap is 0.05mm to 0.5mm.

[0009] Preferably, the silicon steel sheet is a U-shaped plate. The electromagnet also includes a bracket, which is a block structure. The width of the bracket is adapted to the inner width of the silicon steel sheet. The bracket has vertically arranged slots on both sides, and the distance between two adjacent slots is consistent with the width of the oil passage gap. A silicon steel sheet is fixed in one of the two slots located on both sides and arranged opposite each other.

[0010] Preferably, the magnetic conductor comprises ferrite.

[0011] Preferably, a one-way exhaust valve is provided on the upper part of the housing, and the one-way exhaust valve is connected to the interior of the housing above the cooling oil.

[0012] Preferably, the cooling oil wets the electromagnet.

[0013] The beneficial effects of this utility model are as follows:

[0014] The present invention provides an oil passage gap between the silicon steel sheets, which allows the cooling oil near the magnetic conductor to quickly pass through the surface of the silicon steel sheets under the action of capillary effect and high temperature. This effectively removes heat from the silicon steel sheets near the magnetic conductor, improves heat dissipation efficiency, and keeps the temperature of the magnetic conductor and silicon steel sheets at a low level, so that the electromagnet and magnetic conductor can maintain sufficient magnetic force to lift the furnace lid.

[0015] This invention can improve the working time and reliability of the cover-opening module, extend the replacement time of the electromagnet, and has the advantages of good safety and reduced cost. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or related technologies, the drawings used in the description of the embodiments or related technologies 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.

[0017] Figure 1 This is a structural diagram of the present invention;

[0018] Figure 2 This is a cross-sectional view of the present invention;

[0019] Figure 3 This is a top view of the electromagnet of this utility model when it is installed inside the housing;

[0020] Figure 4For the present utility model Figure 3 Enlarged view of region A in the middle;

[0021] Figure 5 This is a side view of the electromagnet of this utility model;

[0022] Figure 6 For the present utility model Figure 5 Enlarged view of region B in the middle;

[0023] Figure 7 This is a front view of the electromagnet of this utility model;

[0024] Figure 8 This is a structural diagram of the bracket and silicon steel sheet of this utility model. Detailed Implementation

[0025] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying 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.

[0027] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0028] like Figures 1 to 8As shown, this utility model provides an electromagnet for a coal loading car. The electromagnet for the coal loading car includes: a shell 1, an electromagnet 2, a magnetic conductor 3, a partition plate 4, and cooling oil 5. The shell 1 is a pipe with an open bottom. An oil guiding channel is provided on the side wall of the shell 1. One end of the oil guiding channel is connected to one end inside the shell 1, and the other end of the oil guiding channel is connected to the other end inside the shell 1. The electromagnet 2 is a U-shaped electromagnet. Multiple electromagnets 2 are arrayed and fixed inside the shell 1. The electromagnet 2 includes multiple silicon steel sheets 22 and a coil. The multiple silicon steel sheets 22 are arranged in parallel and parallel to the vertical center line of the shell 1. An oil passage gap 23 is provided between two adjacent silicon steel sheets 22. The coil is wound around the outside of the multiple silicon steel sheets 22 to form an electromagnet.

[0029] A magnetic conductor 3 is fixed to the lower end of the outer casing 1. The magnetic conductor 3 is in contact with the electromagnet 2, and the magnetic conductor 3 and the outer casing 1 are sealed together. A partition plate 4 is horizontally arranged inside the outer casing 1 between the two ends of the oil channel. The partition plate 4 is provided with multiple through holes, and an electromagnet 2 is fixed in each through hole. The outer casing 1 is filled with cooling oil 5.

[0030] Preferably, the cooling oil 5 includes synthetic cooling oil 5; the width of the oil passage gap 23 is 0.05mm~0.5mm.

[0031] Preferably, the silicon steel sheet 22 is a U-shaped plate. The electromagnet 2 also includes a bracket 21, which is a block structure. The width of the bracket 21 is adapted to the inner width of the silicon steel sheet 22. The bracket 21 has vertically arranged slots on both sides, and the distance between two adjacent slots is the same as the width of the oil passage gap 23. A silicon steel sheet 22 is fixed in one of the two slots located on both sides and arranged opposite each other.

[0032] Preferably, the magnetic conductor 3 comprises ferrite.

[0033] Preferably, a one-way exhaust valve is provided on the upper part of the outer casing 1, and the one-way exhaust valve is connected to the interior of the outer casing 1 above the cooling oil 5.

[0034] Preferably, the cooling oil 5 wets the electromagnet 2.

[0035] It should be added that, in order to ensure that the magnetic force of the electromagnet will not weaken after the oil gap 23 is set between the silicon steel sheets 22, the total cross-sectional area of ​​the silicon steel sheets 22 in all electromagnets 2 cannot be less than the total cross-sectional area of ​​the silicon steel sheets 22 in the electromagnets in the prior art, so as to ensure that the magnetic flux of the electromagnets is the same. Therefore, the diameter of the outer shell 1 of this utility model is correspondingly larger than that of the outer shell 1 of the electromagnet in the prior art.

[0036] The specific operation process of this utility model is as follows:

[0037] The magnetic conductor 3 of this invention is made of ferrite, and the Curie temperature of the ferrite is 450°C~460°C. It can directly contact the furnace cover and maintain the magnetic force at high temperatures. At the same time, when the temperature is transferred to the inside of the outer shell 1, the cooling oil 5, driven by high temperature and capillary action, enters the outer shell 1 above the partition plate 4 through the oil passage 23. This can reduce the temperature of the magnetic conductor 3 and the silicon steel sheet 22 on the side close to the magnetic conductor 3, keeping the temperature of the magnetic conductor 3 and the silicon steel sheet 22 at a low level. Meanwhile, the cooling oil 5 dissipates heat quickly when passing through the oil passage, ensuring that the electromagnet can adapt to the high temperature environment.

[0038] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0039] The above are merely specific embodiments 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 scope of the claims.

Claims

1. An electromagnet for a coal car, characterized by include: The outer casing is a tubular fitting with an open bottom. An oil guiding channel is provided on the side wall of the outer casing. One end of the oil guiding channel is connected to one end inside the outer casing, and the other end of the oil guiding channel is connected to the other end inside the outer casing. An electromagnet, wherein the electromagnet is a U-shaped electromagnet, and an array of multiple electromagnets is fixed inside the outer shell. The electromagnet includes multiple silicon steel sheets and a coil. The multiple silicon steel sheets are arranged in parallel in sequence, and the silicon steel sheets are parallel to the vertical center line of the outer shell. An oil passage gap is provided between two adjacent silicon steel sheets. The coil is wound around the outside of the multiple silicon steel sheets to form an electromagnet. A magnetic conductor is fixed at the lower end of the outer shell. The magnetic conductor is in contact with the electromagnet and is sealed to the outer shell. A partition plate is horizontally installed inside the outer shell between the two ends of the oil guide channel. The partition plate is provided with multiple through holes, and an electromagnet is fixed in each through hole. Cooling oil, the housing is filled with cooling oil.

2. The electromagnet for a coal charging car according to claim 1, characterized by The cooling oil includes synthetic cooling oil; The width of the oil passage gap is 0.05mm to 0.5mm.

3. The electromagnet for a coal charging car according to claim 2, wherein The silicon steel sheet is a U-shaped plate; The electromagnet also includes a bracket, which is a block structure. The width of the bracket is adapted to the inner width of the silicon steel sheet. The bracket has vertical slots on both sides, and the distance between two adjacent slots is the same as the width of the oil passage gap. A silicon steel sheet is fixed in the two slots located on both sides and opposite to each other.

4. The electromagnet for a coal charging car according to claim 3, wherein The magnetic conductor includes ferrite.

5. The electromagnet for a coal charging car according to claim 4, wherein The upper part of the outer casing is provided with a one-way exhaust valve, and the one-way exhaust valve is connected to the interior of the outer casing above the cooling oil.

6. The electromagnet for a coal charging car according to claim 5, wherein The electromagnet is wetted by the cooling oil.

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