CN220672353U - Hollow electromagnetic coil capable of resisting instant electromagnetic force shock wave - Google Patents
Hollow electromagnetic coil capable of resisting instant electromagnetic force shock wave Download PDFInfo
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- CN220672353U CN220672353U CN202320381134.7U CN202320381134U CN220672353U CN 220672353 U CN220672353 U CN 220672353U CN 202320381134 U CN202320381134 U CN 202320381134U CN 220672353 U CN220672353 U CN 220672353U
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Abstract
A hollow electromagnetic coil capable of resisting instant electromagnetic force shock waves, wherein the hollow electromagnetic coil is a hollow electromagnetic coil with a coiled structure; the middle is a hollow structure, and the coil body is formed by coiling a copper strip with an involute section from the center to the outside; when the coil is coiled, the coil is coiled according to the whole circular shape, so that the whole coiled hollow electromagnetic coil is approximately circular; and the first row and the last row of the coil body are respectively connected with a first row of drain wire connecting busbar and a last row of drain wire connecting busbar. According to the utility model, the coiled structure of the hollow electromagnetic coiled coil is changed, so that the hollow electromagnetic coiled coil formed by coiling is approximately circular, the Lorentz force distribution of the hollow electromagnetic coiled coil can be effectively improved, and the influence of the Lorentz force on the coil under the instant heavy current is reduced.
Description
Technical Field
The utility model relates to a manufacturing method of an air core coil of a reactor, in particular to an air core electromagnetic coil capable of resisting instant electromagnetic force shock waves; the hollow electromagnetic coil capable of resisting instant electromagnetic shock waves can further improve the instant heavy current resistance of the hollow electromagnetic coil; belongs to the technical field of manufacturing hollow anode reactors.
Background
The hollow electromagnetic coil is an electromagnetic coil with hollow inside, which is formed by coiling a copper plate or a copper foil plate; the hollow electromagnetic coil is hollow and is generally wound on a mold core, and magnetic flux forms a loop through the mold core and air, and is mainly used for limiting short-circuit current, reactive compensation and moving equal inductive high-voltage appliances.
In the field of direct current power transmission and distribution, in order to limit the current rising rate and transient steep slope surge voltage when the thyristors are switched on, and simultaneously in order to cooperate with the damping circuit, the non-uniform voltage distribution among thyristors connected in series is improved, and the non-periodic triggering stress and the stress when the front surge voltage are generated during interference and normal phase change are reduced, an anode reactor needs to be connected in series in a loop. The working condition of the system in a fault state is that a very large short-circuit current can be generated when the system is in a short-circuit fault, the short-circuit current can reach hundreds of kiloamperes, and electromagnetic force can reach hundreds of thousands of kilonewtons; the instantaneous release of energy can cause the product to explode like a bomb, and the shock waves and fragments generated by the explosion can cause damage to other components in the equipment, thereby causing the whole system to fail.
According to the research of the inventor on the phenomenon, the problem is mainly related to the manufacturing method of the air core reactor, particularly when the coiled air core electromagnetic coil is manufactured, most of the coils are wound by a winding machine, and the occurrence part of the coil is welded with an outlet busbar; however, because the coil is coiled, that is, the coil is coiled layer by layer to form an air-core electromagnetic coil, the innermost and the outermost coil outlet bus bars are respectively provided with an outlet bus bar, when the outlet bus bars are welded on the ports of the coil, the whole coil can be eccentric when the coil is coiled, the eccentric force can cause uneven Lorentz force acting on the coil wire, so that the phenomenon of uneven electric force caused by the Lorentz force and stress concentration can be caused, the impact force of the whole reactor can be increased, and larger current can flow in the air-core reactor in the process of resisting transient high current impact, so that the electric force is increased rapidly, and the explosion fault of the reactor can be caused to a certain extent. It is therefore necessary to improve on how this is wound.
By searching, the same technical report is found, only technical documents in the related field are closest to the technical report, and the technical report is obtained by the following steps:
1. patent No. cn98103554.X, entitled "foil air-core reactor", applicant: the utility model relates to a foil type air-core reactance coil, which is characterized in that a plurality of air duct strips are supported among turns to form an air duct, a curable insulating tape is wound on the outermost layer of the coil, flow guide rows are respectively fixed on the diagonal lines of the starting end and the terminal end of the coil, end frames are fixed at the upper end and the lower end of the coil, and hollow corona-preventing devices are arranged at the end parts of the end frames.
2. Patent number CN202221937600.7, entitled "a loose-proof air coil", applicant: the utility model provides a Shenzhen's city is honest and technology limited company's utility model patent, this patent application discloses an anti-loosening hollow coil, which comprises a bracket, the winding has the wire on the support, be provided with the buckling pole on the support, and the lower extreme position department of support is equipped with the chucking frame, the chucking frame includes fixed block and draw-in groove, the draw-in groove is seted up on the fixed block, and fixed block fixed mounting is on the support, be equipped with on the support and support tight frame, and support tight frame and include flexible pole and inserted bar, fixed connection between flexible pole and the inserted bar, and flexible pole connects between the support, and the support includes winding inner tube, bottom plate and roof. Through the bending rod that sets up, the chucking frame is being used in the cooperation, can carry out the centre gripping to the wire tip fixedly, guarantees the steadiness of wire tip, takes place not hard up when preventing the coil use, adopts to support tight frame, plays to support tight spacing effect to the wire, can further prevent the loosening of coil.
3. Patent number CN97209310.9, entitled "foil air reactor", applicant: the utility model patent of the university of Chinese university and Xu Ji transformer Co., ltd. Discloses an epoxy insulating foil type air-core reactor. The metal foil is adopted to wind K multiplied by N unit coils, each unit coil is provided with m NK turn windings, an axial air passage is arranged between the coil windings, and the coil windings can be connected in parallel or in series. The metal foil is notched or slotted in the direction of rolling. The integral reactor can be cast and insulated by epoxy resin.
Although the above patents all relate to foil-type air coils and improve some technical problems, the patent technologies relate to the problem of how to resist the impact of instantaneous large current and prevent the explosion of the reactor, so that the problems still exist, and therefore, the improvement is necessary.
Disclosure of Invention
The utility model aims to solve the technical problems that the conventional foil type hollow electromagnetic coil is not beneficial to effectively resisting the impact of instant large current and preventing the explosion of a reactor, and provides a manufacturing method of the hollow reactor; the hollow reactor manufactured by the manufacturing method of the hollow reactor can effectively resist the impact of instantaneous large current and prevent the explosion of the reactor.
The utility model is mainly realized by the following technical scheme: a hollow electromagnetic coil capable of resisting instant electromagnetic force shock waves, wherein the hollow electromagnetic coil is a hollow electromagnetic coil with a coiled structure; the middle is a hollow structure, and the coil body is formed by coiling a copper strip with an involute section from the center to the outside; when the coil is coiled, the coil is coiled according to the whole circular shape, so that the whole coiled hollow electromagnetic coil is approximately circular; and the first row and the last row of the coil body are respectively connected with a first row of drain wire connecting busbar and a last row of drain wire connecting busbar.
Further, the copper strip is a foil-type copper strip, and the formed hollow electromagnetic coil is a foil-type winding electromagnetic coil; an interlayer insulation is provided between each layer of the hollow electromagnetic coil, and an end insulation is provided at an end of the hollow electromagnetic coil.
Further, the first row of the hollow electromagnetic coil is fixedly embedded on the coil die core, and the first discharge wires of the arc-shaped structures are connected with the first row of the coil die core respectively at the wire outlet ends of the first row, so that the upper surface of the first row of the coil becomes arc-shaped, the phenomenon that the round winding of the coil is influenced by the protruding upper surface of the first row of the coil is eliminated, and therefore, when the adjacent coils of the first row of the coil are wound, the coils are more approximate to the round shape, and the wound coils are approximate to the round shape.
Further, the tail row of the hollow electromagnetic coil is positioned according to the circle, the wire outlet end of the tail row is connected with the tail discharge wire connecting busbar of the arc structure, and the hollow electromagnetic coil is integrally wrapped in a stainless steel cylinder, so that the shape of the coiled hollow electromagnetic coil is circular, and the shape of the coil is fixed.
Further, the head exhaust line connecting busbar and the tail exhaust line connecting busbar are respectively formed by two parts; one part is an arc-shaped section part, and the other part is a 7-shaped flat plate structure.
Further, the arc line is inserted into the inner face of the coil, the insertion part of the first discharge line connecting busbar and the tail discharge line connecting busbar is slotted with the part connected with the coils of the first coil row and the tail coil row, the first coil row and the tail coil row are respectively clamped at the slotting positions of the first discharge line connecting busbar and the tail discharge line connecting busbar, and the arc line connecting is formed between the first coil row and the first coil row through welding connection, so that the whole coil is more beneficial to being circular when coiled.
Further, the side face of the 7-shaped flat plate structure part is connected with a water cooling plate, so that heat of the coil is transferred to the water cooling plate in a conduction mode and carried away by water.
Further, the micro gap between the layers of the hollow electromagnetic coil is filled with a plurality of sections of arc-shaped base plates, gaps inside the coils are continuously padded, and the coils are prevented from being deformed under the action of Lorentz force when gaps between the coils are instantaneously subjected to heavy current.
Furthermore, the gap between the stainless steel cylinder and the periphery of the hollow electromagnetic coil is filled with hard materials, and the hollow electromagnetic coil is hooped by the stainless steel cylinder, so that the hollow electromagnetic coil is more approximate to a circle on one hand, and the stainless steel cylinder resists Lorentz force generated by instantaneous heavy current on the other hand, so that the coil is not deformed.
Furthermore, the stainless steel cylinder is an open cylinder, stainless steel plates are welded on two sides of the opening, bolt holes are preset in the stainless steel plates, and the stainless steel cylinder is contracted by fastening stainless steel bolts when the air core reactor is assembled, so that the coil is hooped.
Further, the stainless steel cylinder is fixed on the base in the closed box body by fastening stainless steel bolts, and is distributed in a symmetrical arrangement structure.
Furthermore, the elastic heat-conducting glue is filled and sealed in the whole closed box body, and the water-cooling heat-dissipating plate is stuck on the surface of the coil, which extends out of the box body, of the coil, wherein the head discharge line connection busbar and the tail discharge line connection busbar, so that heat of the coil is transferred to the water-cooling heat-dissipating plate in a conduction mode and is carried away by water.
The utility model has the beneficial effects that:
the improved hollow electromagnetic coil structure is adopted, so that the whole coil is more approximate to a round shape, the influence of Lorentz force is effectively reduced, and the hollow electromagnetic coil is prevented from instantaneous heavy current. Has the following advantages:
1) The hollow electromagnetic coil is wound by the copper strips, and the shape of the hollow electromagnetic coil is designed to be infinitely approximate to a circle, so that Lorentz force applied to the coil under instant heavy current is uniformly distributed in the radial direction;
2) The gaps which cannot be eliminated in the coil are filled with the hard material, so that the space for stressed deformation of the coil is reduced;
3) According to the utility model, the stainless steel cylinder is wrapped on the periphery of the coil, the gap between the periphery of the coil and the stainless steel cylinder is filled with a hard material, and the stainless steel cylinder resists Lorentz force generated by instantaneous heavy current, so that the coil is not deformed;
4) The combination of a plurality of air coils reduces the Lorentz force as much as possible by changing the current and inductance of a single coil, and the method can also connect various series-parallel structures according to the requirement of the appearance volume;
5) The hollow reactor is assembled and fixed and then is placed into the box body, and then the elastic heat-conducting glue is integrally encapsulated, and the elastic heat-conducting glue plays a role in buffering, so that slight deformation of the coil under the lorentz force can be resisted.
Drawings
FIG. 1 is a schematic cross-sectional view of a hollow electromagnetic coil body of the present utility model;
FIG. 2 is a schematic view of a hollow electromagnetic coil wrapped with stainless steel round in a cylinder according to the present utility model;
FIG. 3 is a schematic view of a cylinder wrapped stainless steel round structure according to the present utility model;
FIG. 4 is a schematic side elevational view of FIG. 3;
FIG. 5 is a schematic view of a busbar structure for outlet connection according to the present utility model;
FIG. 6 is a schematic side view of a busbar for outlet connection according to the present utility model;
fig. 7 is a schematic structural view of the hollow electromagnetic coil of the present utility model in a reactor;
fig. 8 is a schematic diagram of an arrangement of the hollow electromagnetic coil of the utility model in a reactor.
Detailed Description
The utility model will now be described in detail with reference to the drawings and to specific embodiments.
Example 1
As shown in fig. 1-5, a hollow electromagnetic coil of a reactor, wherein the hollow electromagnetic coil 1 is a hollow electromagnetic coil with a coil structure; the middle is a hollow structure, the coil body 2 is formed by coiling a copper strip with an involute section from the center outwards, and coils are coiled according to the whole circle shape during coiling, so that the whole coiled hollow electromagnetic coil is approximately circular; the outlet ends of the head row 3 and the tail row 4 of the coil body 2 are respectively connected with a head discharge wire connecting busbar 5 and a tail discharge wire connecting busbar 6.
The copper strips are foil-type copper strips, and the hollow electromagnetic coil formed by the copper strips is a foil-type winding electromagnetic coil; an interlayer insulation is provided between each layer of the hollow electromagnetic coil, and an end insulation is provided at an end of the hollow electromagnetic coil.
The first row 3 of the hollow electromagnetic coil is fixedly embedded on the coil die core 7, and the outgoing line ends of the first row 3 are respectively connected with the first discharge line connecting busbar 5 with an arc structure, so that the upper surface and the lower surface of the first row of the coil are arc-shaped, the phenomenon that the circular winding of the coil is influenced by the protrusion of the upper surface of the first row of the coil is eliminated, and therefore, when the adjacent coils of the first row of the coil are wound, the coil is more approximate to a circle, and the wound coil is approximate to the circle.
The tail row 4 of the hollow electromagnetic coil is also positioned according to a circle, the wire outlet end of the tail row 4 is connected with the tail discharge wire connecting busbar 6 with an arc structure, and the hollow electromagnetic coil is integrally wrapped in a stainless steel cylinder 8, so that the shape of the coiled hollow electromagnetic coil with the coiled structure is more circular, and the shape of the coil is fixed.
The head discharge line connecting busbar 5 and the tail discharge line connecting busbar 6 are respectively formed by two parts; one part is an arc-shaped section part 15, and the other part is a 7-shaped flat plate structure; the arc line is inserted into the inner surface of the coil, and the part of the insertion part of the first discharge line connecting busbar 5 and the tail discharge line connecting busbar 6, which is connected with the coils of the first coil row and the tail coil row, is provided with an arc groove 17, so that the first coil row and the tail coil row are respectively clamped at the arc groove 17 of the first discharge line connecting busbar 5 and the arc groove 17 of the tail discharge line connecting busbar 6, and then are connected by welding, so that the arc line connection is formed between the first coil row and the first coil row, and the whole coil is more beneficial to being circular when coiled; the side face of the 7-shaped flat plate structure part 16 is connected with a water-cooling heat dissipation plate 14, so that heat of the coil is transferred to the water-cooling heat dissipation plate in a conduction mode and carried away by water.
The hollow electromagnetic coil of the coil body 2 is filled with a plurality of sections of arc-shaped base plates 9 at the inner small gaps between the coil layers, gaps inside the coils are continuously padded, and the coils are prevented from being deformed under the action of Lorentz force when gaps between the coils are instantaneously subjected to heavy current.
The stainless steel cylinder is tightly hooped with the hollow electromagnetic coil, so that the hollow electromagnetic coil is more round, and the stainless steel cylinder resists Lorentz force generated by instantaneous heavy current, so that the coil is not deformed.
The stainless steel cylinder 8 is an open cylinder, an open groove 10 is formed in a cylinder body 12 of the cylinder, stainless steel plates 11 are welded on two sides of the open groove 10, bolt holes 13 are preset in the stainless steel plates 11, and the stainless steel cylinder is contracted by fastening stainless steel bolts when the air reactor is assembled, so that a coil is hooped.
The stainless steel cylinder 8 is fixed on a base 19 in the closed box 18 by fastening stainless steel bolts and is arranged in a symmetrical arrangement structure; the 7-shaped flat plate structure part 16 of the head discharge line connecting busbar 5 and the tail discharge line connecting busbar 6 extends out of the closed box 18, and the side surface is connected with the water cooling plate 14.
Example two
The principle of the second embodiment is the same as that of the first embodiment, but the structure is different, and the hollow electromagnetic coil capable of resisting instant electromagnetic shock waves is a single coil, the hollow electromagnetic coil is wound in a winding mode, and when the coil is wound, the coil is wound according to a round shape, so that the wound hollow electromagnetic coil is in a shape similar to the round shape, the distribution state of lorentz force of the hollow electromagnetic coil is improved, and the hollow electromagnetic coil is reinforced by the hollow electromagnetic coil to prevent the hollow electromagnetic coil from being deformed under the instant heavy current condition to cause burst.
The coil is wound according to the circle, the section of the coil inner section of the coil outlet line of the hollow electromagnetic coil is set to be arc-shaped, the first line of the hollow electromagnetic coil is embedded and fixed on the coil mould core, the upper surface of the first line of the coil is arc-shaped, the phenomenon that the upper surface of the first line of the coil protrudes to influence the circular winding of the coil is eliminated, and therefore when the adjacent coils of the first line of the coil are wound, the coil is more approximate to the circle, and the wound coil is approximate to the circle.
The section of the coil inner section of the hollow electromagnetic coil outlet line is set to be arc-shaped, and the part of the hollow electromagnetic coil outlet line connected with the hollow electromagnetic coil is divided into two parts; one part is arc-shaped section, the arc is inserted into the inner face of the coil, and the part of the insertion part of the outgoing line row connected with the first line of the coil is slotted, so that the first line of the coil is clamped at the slotted part of the outgoing line row, and the arc connection is formed between the outgoing line row and the first line of the coil by welding connection, thereby being more beneficial to forming a round shape when the whole coil is coiled.
When the coil is coiled, gaps inside the coil are continuously padded by adopting a plurality of sections of arc-shaped backing plates at the micro gaps inside the coil, so that the coil is prevented from being deformed under the action of Lorentz force when the gaps between the coils are instantaneously subjected to high current.
The tail row of the hollow electromagnetic coil is positioned according to a circle and is finally fixed on the reactor shell, so that after the hollow electromagnetic coil is wound, the appearance of the hollow electromagnetic coil with the formed winding structure is circular, and the appearance of the coil is fixed.
The hollow electromagnetic coil is reinforced by wrapping the stainless steel cylinder around the periphery of the hollow electromagnetic coil, gaps between the periphery of the coil and the stainless steel cylinder are filled with hard materials, and the hollow electromagnetic coil is tightly hooped by the stainless steel cylinder, so that the hollow electromagnetic coil is more approximate to a circle on one hand, and the stainless steel cylinder resists Lorentz force generated by instantaneous heavy current on the other hand, so that the coil is not deformed.
The stainless steel cylinder is an open cylinder, stainless steel plates are welded on two sides of the opening, bolt holes are preset in the stainless steel plates, and the stainless steel cylinder is contracted by fastening the stainless steel bolts when the air core reactor is assembled, so that the coil is hooped.
The hollow electromagnetic coil is reinforced by the hollow electromagnetic coil, the hollow electromagnetic coil wrapped by the stainless steel cylinders is arranged in the closed box body, then the whole box body is filled with elastic heat-conducting glue, the elastic heat-conducting glue plays a role in buffering, and deformation of the coil under Lorentz force is further resisted. The plurality of hollow reactors are assembled and fixed and then are arranged in the box body, and then the elastic heat-conducting glue is integrally encapsulated and used for buffering, so that slight deformation of the coil under the lorentz force can be resisted.
The hollow electromagnetic coil is a single coil, so that the problem of a plurality of coils is solved; this is also possible for large space situations, but the construction of the monocoil needs to be stronger.
The surface of the coil outlet extending out of the box body is stuck with a water-cooling heat-dissipating plate, so that the heat of the coil is transferred to the water-cooling heat-dissipating plate in a conduction mode and carried by water.
The manufacturing of the hollow electromagnetic coil comprises the following steps:
1) Firstly, manufacturing an outgoing line, wherein the part of the outgoing line extending into the coil is arc-shaped, and the arc degree is determined according to the diameter of the coil so as to eliminate the influence of the protrusion of the upper surface of the first line of the coil on the circular winding of the coil;
2) Welding the winding copper strip on a notch of the outgoing line row, so that the winding copper strip and the outgoing line row are in arc shapes; welding requirements are as follows: the welding is firm, the welding path is smooth, the file is used for smoothing after the welding, burrs are removed, then sand paper is used for polishing, and copper scraps cannot fall onto an insulation and winding die;
3) Coiling the coil, wherein the whole copper strip is ensured to be round during coiling; the hollow electromagnetic coil head row is embedded and fixed on the coil mould core, so that the upper surface of the coil head row is arc-shaped, the phenomenon that the upper surface of the coil head row protrudes to influence the circular winding of the coil is eliminated, and therefore, when the coil head row adjacent to the coil head row is coiled, the coil is more approximate to the circular shape, the tail row of the hollow electromagnetic coil is positioned according to the circular shape firstly and is finally fixed on the reactor shell, and the coiled coil is approximate to the circular shape; the tail row of the hollow electromagnetic coil is positioned according to a circle and is finally fixed on the reactor shell, so that the coiled coil is approximate to the circle; thickness of interlayer insulation and terminal insulation determined according to insulation requirements) is pulled out of the pad under the copper strip during coiling; the insulation is about 100mm beyond the copper strip position; when the copper bar is wound by one turn, the grown insulation is folded on the copper bar for reinforcing insulation;
4) When 1.2 turns are wound, checking whether the coil is round or not, and whether the two ends are flat or not, otherwise, correcting the flatness and continuing winding;
5) After winding is completed, carrying out paint dipping treatment on the coil; drying after paint dipping;
6) Wrapping the coil subjected to insulation treatment by using a stainless steel cylinder, locking by using a locking bolt, and fixing the coil in a box body;
7) Filling and sealing the gap in the box body; and filling the whole box body with the elastic heat-conducting glue.
The above-listed embodiments are only to clearly and completely describe the technical solution of the present utility model in conjunction with the accompanying drawings; it should be understood that the embodiments described are only some embodiments, but not all embodiments, and that the terms such as "upper", "lower", "front", "rear", "middle", etc. used in this specification are also for descriptive purposes only and are not intended to limit the scope of the utility model in which the utility model may be practiced, but rather the relative relationships thereof may be altered or modified without materially altering the technology to the extent that the utility model may be practiced. Meanwhile, the structures, proportions, sizes and the like shown in the drawings are only used for being matched with the disclosure of the specification, so that people skilled in the art can know and read the structures, proportions and sizes, and the like, and are not limited by the practical limit conditions of the utility model, so that the structure modification, the proportion relation change or the size adjustment do not have any technical significance, and all fall within the scope covered by the technical disclosure of the utility model under the condition that the effect and the achieved aim of the utility model are not affected. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The utility model has the beneficial effects that:
the improved hollow electromagnetic coil structure is adopted, so that the whole coil is more approximate to a round shape, the influence of Lorentz force is effectively reduced, and the hollow electromagnetic coil is prevented from instantaneous heavy current. Has the following advantages:
1) The hollow electromagnetic coil is wound by the copper strips, and the shape of the hollow electromagnetic coil is designed to be infinitely approximate to a circle, so that Lorentz force applied to the coil under instant heavy current is uniformly distributed in the radial direction;
2) The gaps which cannot be eliminated in the coil are filled with the hard material, so that the space for stressed deformation of the coil is reduced;
3) According to the utility model, the stainless steel cylinder is wrapped on the periphery of the coil, the gap between the periphery of the coil and the stainless steel cylinder is filled with a hard material, and the stainless steel cylinder resists Lorentz force generated by instantaneous heavy current, so that the coil is not deformed;
4) The combination of a plurality of air coils reduces the Lorentz force as much as possible by changing the current and inductance of a single coil, and the method can also connect various series-parallel structures according to the requirement of the appearance volume;
5) The hollow reactor is assembled and fixed and then is placed into the box body, and then the elastic heat-conducting glue is integrally encapsulated, and the elastic heat-conducting glue plays a role in buffering, so that slight deformation of the coil under the lorentz force can be resisted.
Claims (4)
1. A hollow electromagnetic coil capable of resisting instant electromagnetic force shock waves, wherein the hollow electromagnetic coil is a hollow electromagnetic coil with a coiled structure; the middle is hollow structure, its characterized in that: the coil body is formed by coiling a copper strip from the center to the outside with the section as an involute shape; when the coil is coiled, the coil is coiled according to the whole circular shape, so that the whole coiled hollow electromagnetic coil is approximately circular; the first row and the last row of the coil body are respectively connected with a first row of drain wire connecting bus bars and a last row of drain wire connecting bus bars; the copper strips are foil-type copper strips, and the hollow electromagnetic coil formed by the copper strips is a foil-type winding electromagnetic coil; interlayer insulation is arranged between each layer of the hollow electromagnetic coil, and end insulation is arranged at the end part of the hollow electromagnetic coil; the first row of the hollow electromagnetic coil is fixedly embedded on the coil mould core, and the outlet ends of the first row are respectively connected with a first discharge wire connecting busbar with an arc-shaped structure, so that the upper surface of the first row of the coil is arc-shaped; the tail row of the hollow electromagnetic coil is also positioned according to a circle, the outlet end of the tail row is connected with the tail outlet wire connecting busbar of the arc structure, and the hollow electromagnetic coil is integrally wrapped in a stainless steel cylinder, so that the shape of the hollow electromagnetic coil of the wound coil structure is more circular, and the shape of the coil is fixed; the stainless steel cylinder is an open cylinder, stainless steel plates are welded on two sides of the opening, bolt holes are preset in the stainless steel plates, and the stainless steel cylinder is contracted by fastening stainless steel bolts when the air-core reactor is assembled, so that the coil is hooped; the stainless steel cylinder is fixed on the base in the closed box body by fastening stainless steel bolts and is distributed in a symmetrical arrangement structure.
2. A hollow electromagnetic coil resistant to transient electromagnetic shock waves as recited in claim 1, wherein: the head discharge line connecting busbar and the tail discharge line connecting busbar are respectively composed of two parts; one part is an arc-shaped section part, and the other part is a 7-shaped flat plate structure.
3. A hollow electromagnetic coil resistant to transient electromagnetic shock waves as recited in claim 2, wherein: the side face of the 7-shaped flat plate structure part is connected with a water-cooling heat dissipation plate.
4. A hollow electromagnetic coil resistant to transient electromagnetic shock waves as recited in claim 3, wherein: the hollow electromagnetic coil is characterized in that a plurality of sections of arc-shaped base plates are filled in the small gaps inside the layers of the hollow electromagnetic coil, and gaps inside the coil are continuously padded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320381134.7U CN220672353U (en) | 2023-03-03 | 2023-03-03 | Hollow electromagnetic coil capable of resisting instant electromagnetic force shock wave |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320381134.7U CN220672353U (en) | 2023-03-03 | 2023-03-03 | Hollow electromagnetic coil capable of resisting instant electromagnetic force shock wave |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220672353U true CN220672353U (en) | 2024-03-26 |
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