CN210512154U - Electromagnetic vortex hot-blast stove - Google Patents

Abstract

The utility model provides an electromagnetic eddy current type hot blast stove, which belongs to the technical field of fluid heating equipment. It has solved the big scheduling problem of prior art design heat loss. The electromagnetic eddy current type hot blast stove comprises a box body, wherein an electromagnetic heating type heating structure is arranged in the box body, and the electromagnetic eddy current type hot blast stove is characterized in that the heating structure comprises a plurality of cable sleeves which are transversely arranged on two opposite sides of the box body and are made of magnetic conductive materials and are used for heating cables to penetrate through, and the plurality of cable sleeves are arranged side by side from top to bottom and the like. The electromagnetic vortex hot blast stove has the advantages that: the inner side of the tank body is provided with a plurality of cable sleeves made of magnetic materials in a run-through mode, a single heating cable penetrates through two opposite cable sleeves back and forth to form a plurality of ring-shaped coil structures, liquid in the tank body is heated through formed electromagnetic eddy currents after the heating cable is electrified, and the structure enables the electromagnetic eddy current heating loss to be small.

Description

Electromagnetic vortex hot-blast stove

Technical Field

The utility model belongs to the technical field of fluid heating equipment, especially, relate to an electromagnetism vortex type hot-blast furnace.

Background

The electromagnetic heating is based on the electromagnetic eddy current principle, the existing electromagnetic heating equipment adopts the heating mode that a current coil is spirally wound on the circumferential outer side of a cylindrical or tubular part made of a magnetic conductive material, and a substance to be heated is placed in the cylindrical or tubular part, because the current coil is externally arranged and the current coil cannot be coated with a heat insulation layer, if the heat insulation layer is coated, the temperature of the current coil is increased due to the fact that the current coil cannot dissipate heat, the outer skin of the current coil is fused or burnt possibly, and potential safety hazards occur, so that a considerable part of heat generated by eddy current is lost, the heating effect is poor, in order to improve the heating effect, namely to improve the current of the current coil, only the cross section of a conducting wire in the current coil can be increased, and the existing electromagnetic heating equipment is a thick conducting wire with a large cross section, the thickening of the wire inevitably leads to the reduction of the resistance, and the size of the resistance is in direct proportion to the size of the heat generated by the eddy current.

At present, most of the existing devices for producing hot air use coal as fuel, and the hot air is taken out by a blower after a medium is heated. The device has the disadvantages of low thermal efficiency, large volume, large occupied area and environmental pollution, and people select the hot blast stove which generates heat by electromagnetism for the purpose, but the electromagnetic heating equipment in the existing hot blast stove which adopts the electromagnetic heating adopts a mode that a current coil is wound on the outer side of a magnetizer, for example, patent documents disclose the electromagnetic heating hot blast stove [ application number: CN201821203077.9], including the furnace body, the front end of furnace body is equipped with the air outlet, and the rear end of furnace body is equipped with the air intake, and the furnace body outside is equipped with the insulating layer, and the winding has high temperature high frequency wire outside the insulating layer, is equipped with a plurality of circles of copper fin in the furnace body, and every circle all includes a plurality of copper fin, and the outer end of every copper fin all welds on the furnace body inner wall, and the inner of every copper fin all faces the furnace body centre of a circle. Gaps are reserved between adjacent radiating fins positioned in the same circle, gaps are reserved between adjacent circles of radiating fins, and the like, so that the problems of serious heat loss and low utilization rate of heat efficiency exist.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned problem, provide an electromagnetic eddy current type hot-blast furnace of problem that reasonable in design, the solution current electromagnetic heating equipment heat loss is big, the heat utilization efficiency is low.

In order to achieve the above purpose, the utility model adopts the following technical proposal: the utility model discloses an electromagnetism vortex formula hot-blast furnace, including the box, be equipped with electromagnetic heating formula's heating structure in the box, its characterized in that, heating structure include a plurality of horizontal cable sleeve pipes of making by magnetic material that supply heating cable on locating box relative both sides wear to establish, and these a plurality of cable sleeve pipes are from top to bottom and set up side by side, and an at least independent heating cable passes the coil structure of lumen in arbitrary two in all cable sleeve pipes in order to form a plurality of circles shape many times.

Preferably, the cable sleeve is a heat dissipating double-edged tube.

Preferably, the cable bushing is disposed on the open end of the housing.

Preferably, the opening end on the box body is communicated with an induced draft cover in a sealing mode, and the cross section of the induced draft cover close to one end of the box body is large, and the cross section of the induced draft cover far away from one end of the box body is small.

Preferably, the number of cable bushings is even; the heating cable is formed by twisting a plurality of strands of thin conductive wires; when all the heating cables penetrating through the cable sleeve are electrified, the current flows into the coil structure made of the heating cables in the same direction.

Preferably, a plurality of loops are wound between the tube cavities of any adjacent pair of all the cable sleeves by a single heating cable.

Preferably, the heating cable is wound around both of the cable sleeves with at least 10 turns.

Compared with the prior art, the electromagnetic vortex hot blast stove has the advantages that:

A. the heating cable is different from the prior art that the heating cable is wound on the circumferential outer side of the whole to-be-heated equipment, but a plurality of check pipes made of magnetic conductive materials are arranged on the inner side of the to-be-heated equipment in a penetrating way, a single heating cable is arranged in two opposite check pipes in a penetrating way to form a plurality of ring-shaped coil structures, and the check pipes are added through electromagnetic eddy currents formed after being electrified;

B. the heating cable in the scheme is different from the prior art that thick conductive wires with large cross sections are adopted, the total number of strands is small, but thin conductive wires with relatively small cross sections are adopted, the total number of strands is more than that of the conventional total strands, and the more the total number of strands in one heating cable is, the smaller the area of the cross section of each strand is, the larger the load power is according to the Faraday's electromagnetic induction law and other principles;

C. when a plurality of circles are wound by a single heating cable between any adjacent pair of tube cavities in all the sheet checking tubes in the box body, the generated load power is maximum, and the heating effect is finally realized;

D. the air guide cover communicated with the opening end on the box body in a sealing mode not only reduces loss caused by outflow of hot air to the outside, but also is beneficial to improvement of hot air conveying speed.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 provides a schematic front view of a winding manner of a heating cable according to an embodiment of the present invention.

Fig. 2 provides a schematic front view of another winding method of a heating cable according to an embodiment of the present invention.

Fig. 3 provides a schematic side view in an embodiment of the invention.

In the figure, a heating cable 103, a cable sleeve 104, a box 401, and an air draft cover 402 are shown.

Detailed Description

As shown in fig. 1 to 3, the present electromagnetic vortex hot blast stove includes, but is not limited to, the following examples.

The electromagnetic vortex type hot blast stove comprises a box body 401, wherein an electromagnetic heating type heating structure is arranged in the box body 401, and the electromagnetic vortex type hot blast stove is characterized in that the heating structure comprises a plurality of cable sleeves 104 which are transversely arranged on two opposite sides of the box body 401 and are made of magnetic conductive materials, the cable sleeves 104 are arranged side by side from top to bottom, and at least one independent heating cable 103 penetrates through tube cavities in any two of the cable sleeves 104 for multiple times so as to form a plurality of ring-shaped coil structures. The heating cable 103 here is typically a high temperature wire, typically several hundred to several thousand volts high.

Additionally, the cable sleeve 104 is a heat dissipating double wall tube. The heating cable 103 is arranged in the heat dissipation part of the existing hot blast stove product, the heating cable 103 is arranged in the heat dissipation part in the existing hot blast stove product, the sheet check pipe is of a hollow structure in the axial direction, the heating cable 103 is heated by the hollow structure and the heat dissipation performance of the existing parts, and the heat of the sheet check pipe is well conveyed out.

Specifically, as shown in fig. 1, after passing through the tube cavities in any two of all the cable sleeves 104 for multiple times to form a plurality of loop-shaped coil structures, one heating cable 103 continues to enter another two cable sleeves 104 that are not passed through by the heating cable 103 and are passed through again for multiple times to form another plurality of loop-shaped coil structures, for example, a secondary type can be passed through by the required number of cable sleeves 104 according to needs, but the heating cable 103 here can also be multiple, as shown in fig. 2, each heating cable 103 can be passed through only one pair of cable sleeves 104, or one heating cable 103 can be passed through several pairs but not all of all the cable sleeves 104, specifically according to needs.

Additionally, a cable sleeve 104 is disposed over the open end on the housing 401.

Preferably, an air draft cover 402 is hermetically communicated with an opening end of the box 401, and the cross section of one end, close to the box 401, of the air draft cover 402 is large, and the cross section of one end, far away from the box 401, of the air draft cover is small. The arrangement of the induced draft cover 402 hermetically communicated with the opening end of the box 401 not only reduces the loss caused by the outflow of hot air to the outside, but also is beneficial to the improvement of the hot air conveying speed.

Alternatively, the number of cable sleeves 104 is even, so that each cable sleeve 104 is available;

preferably, the heating cable 103 is formed by twisting a plurality of thin conductive wires, wherein the number of the plurality of wires is generally more than tens of wires, and some wires even reach hundreds of wires, so as to increase the load power, and the maximum allowable current is larger than that of the existing external winding manner. The heating cable 103 is different from the prior art that each strand of thick conductive wire with a large cross section is adopted, the total strand number is small, but each strand of thin conductive wire with a relatively small cross section is adopted, the total strand number is more than the prior total strand number, and the more the total strand number in one heating cable 103 is, the smaller the cross section area of each strand is, the larger the load power is according to the Faraday's electromagnetic induction law and other principles; when all the heating cables 103 passing through the cable sleeve 104 are energized, the direction in which current flows into each coil structure made of the heating cables 103 is the same. The directions of magnetic fluxes generated by the plurality of coil structures are the same, so that negative influence among the coil structures is prevented, and the load power is weakened;

when all the heating cables 103 passing through the cable sleeve 104 are energized, the direction in which current flows into each coil structure made of the heating cables 103 is the same. The directions of magnetic fluxes generated by the plurality of coil structures are the same to prevent negative influence between each other, thereby weakening load power.

Additionally, a plurality of loops of the single heating cable 103 are wound between the lumens of any adjacent pair of the cable sleeves 104. The load power is improved.

Additionally, the number of turns of the coil of the heating cable 103 wound on the two cable sleeves 104 is at least 10, which depends on the size of the cable sleeves 104, the cross-section of the heating cable 103 and the specific requirements.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although terms like heating cable 103, cable bushing 104, box 401, air draft shield 402 are used more here, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims (7)

1. The utility model provides an electromagnetism vortex formula hot-blast furnace, includes box (401), box (401) in be equipped with electromagnetic heating formula's heating structure, its characterized in that, heating structure include a plurality of horizontal locate box (401) supply heating cable (103) on the relative both sides wear to establish by cable sleeve (104) that magnetic material made, these a plurality of cable sleeve (104) are from top to bottom and set up side by side, at least one independent heating cable (103) pass all cable sleeve (104) in arbitrary two in the lumen in order to form the coil structure of a plurality of rings shape.

2. Electromagnetic vortex hot blast stove according to claim 1, characterized in that the cable sleeve (104) is a heat dissipating double-edged tube.

3. An electromagnetic vortex hot blast stove according to claim 1, characterised in that the cable sleeve (104) is arranged on an open end on the box (401).

4. The electromagnetic vortex hot blast stove according to claim 1, characterized in that the open end of the box body (401) is in sealed communication with an induced draft hood (402), and the induced draft hood (402) has a larger cross section at one end close to the box body (401) and a smaller cross section at one end far away from the box body (401).

5. Electromagnetic vortex hot blast stove according to any of claims 1 to 4, characterized in that the number of cable bushings (104) is even; the heating cable (103) is formed by twisting a plurality of strands of thin conducting wires; when all the heating cables (103) penetrating through the cable sleeve (104) are electrified, the current flows into each coil structure formed by winding the heating cables (103) in the same direction.

6. An electromagnetic vortex hot blast stove according to claim 5, characterized in that a plurality of loops are wound from a single heating cable (103) between the tube cavities of any adjacent pair of all the cable sleeves (104).

7. An electromagnetic vortex hot blast stove according to claim 5, characterized in that the heating cable (103) is wound simultaneously around two cable sleeves (104) with a number of turns of at least 10.

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