CN220672354U - Hollow water-cooled reactor of foil winding electromagnetic coil - Google Patents

Abstract

The hollow water-cooled reactor comprises a shell and a reactor body, wherein the reactor body is arranged in the shell, the reactor body is a hollow water-cooled reactor, a coil of the hollow water-cooled reactor is coiled and wound by a copper foil, the section of the coil of the hollow water-cooled reactor is in a spiral line structure, and the middle of the coil of the hollow water-cooled reactor is hollow; the coil of the hollow water-cooling reactor is fixed in the metal ring and then fixed on the fixed base of the shell through the metal ring. The reactor bodies are arranged in the shell in parallel in a combined mode, the fixed bases of the two reactor bodies are respectively arranged on two opposite surfaces of the middle of the inside of the shell, and the metal rings are fixed on the fixed bases in an inclined mode through fastening screws to form a symmetrical arrangement structure of the two reactor bodies in the shell. The utility model can effectively prevent the damage to the coil under the instant heavy current.

Description

Hollow water-cooled reactor of foil winding electromagnetic coil

Technical Field

The utility model relates to an air-core water-cooling reactor (comprising various reactors, transformers and the like), in particular to an air-core water-cooling reactor of a foil winding electromagnetic coil; the hollow water-cooled reactor of the foil winding electromagnetic coil can further improve the resistance of the hollow water-cooled reactor coil to instantaneous heavy current; belongs to the technical field of manufacturing of reactors.

Background

The air-core reactor is an inductive high-voltage electric appliance used for limiting short-circuit current, reactive compensation and equal movement in an electric power system, and magnetic flux forms a loop through air, so the air-core reactor is called as an air-core reactor. The hollow reactor mainly comprises a hollow series reactor, a hollow filter reactor, a hollow shunt reactor, a hollow current-limiting reactor, a hollow split reactor, a hollow starting reactor and the like, and is commonly used for occasions such as reactive power compensation, harmonic wave filtering, current limiting and the like. 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 air-core anode reactor with a water cooling structure is required 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.

The inventor finds that the problem can be caused in the practical application process, and the problem is mainly related to the manufacturing method of the hollow anode reactor, and when the hollow anode reactor with the water cooling structure is used for manufacturing a coil of the coiled hollow water cooling reactor, most of the hollow anode reactor is wound by a winding machine, and the occurrence part of the coil is welded with an outlet busbar in general; however, because the air-core water-cooled reactor coil is formed by coiling, namely coiling one layer by one layer, the innermost and the outermost 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 electric force caused by the Lorentz force is uneven, the phenomenon of stress concentration is caused, the impact force of the whole reactor can be increased, and in the process of resisting transient high-current impact, larger current can flow in the air-core water-cooled reactor, 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 number is CN201310127220.6, and the name is "coil winding structure of air-core water-cooling reactor", and the application is: the utility model patent of the electric equipment limited company of the storian, the patent discloses a coil winding structure of an air-core water-cooled reactor, comprising two insulating end plates, right-angle dog bones, I-shaped dog bones, a positioning plate and a square shaft which are fixedly arranged relatively; a plurality of right-angle cavities and I-shaped bar cavities are formed in the center of the insulating end plate; the right-angle dog bones and the I-shaped dog bones are respectively positioned in the right-angle cavity and the I-shaped cavity; the right-angle cavity and the I-shaped cavity of the insulating end plate are fixedly connected with positioning plates; a square shaft is arranged between the insulating end plates; the square shaft penetrates through the insulating end plate and the positioning plate respectively; the positioning plate is I-shaped; the insulating end plate is fastened and connected with the positioning plate through screws.

2. Patent No. CN200810094656.9, entitled "coil structure of reactor", filed as: the utility model patent of the national grid company discloses a coil structure of a reactor, wherein the reactor comprises two or more independent reactor bodies, coils inside the reactor bodies are connected together, and the connection can be series connection or parallel connection. When the reactor adopts a double-body structure, the coils inside the two bodies can be the coils in the first body, namely one end of the first coil is a wire inlet end, the other end of the first coil is connected with one end of the coil in the second body, namely the second coil, and the other end of the second coil is a wire outlet end, so that the coils inside the reactor bodies are connected in series. The coils inside the bodies can be connected together through series connection or parallel connection. That is, the coils may be connected in series or in parallel.

3. Patent number CN202022947429.5, entitled "coil of ultra-high pressure air water-cooled reactor", applicant: the utility model patent application of cist electric equipment limited company discloses a coil of an ultra-high voltage air-core water-cooled reactor, comprising: a winding, an insulating layer and at least two terminal members. The winding adopts an inner shielding winding structure, the winding comprises a plurality of pancake coils, end insulation is arranged at two ends of the winding, inter-section insulation is arranged between every two pancake coils, the winding is wrapped by an insulation layer, at least two wiring terminal components are connected to the side face of the outer ring of the winding and extend to the outer side of the winding from the outer ring of the winding through the insulation layer, and the wiring terminal components are fixed on a supporting plate.

Although the above patents relate to hollow water-cooled reactors and improve some technical problems, none of the above patent technologies relate to the problem of how to resist the impact of instantaneous large current and prevent the explosion of the reactor coil, and the above problems still exist, so that improvement is needed.

Disclosure of Invention

The utility model aims to solve the technical problems that the existing air-core water-cooling reactor coil is not beneficial to effectively resisting the impact of instant large current and preventing the reactor coil from cracking; the hollow water-cooling reactor can effectively resist the impact of instantaneous heavy current and prevent the explosion of the reactor coil.

The utility model is mainly realized by the following technical scheme: the hollow water-cooled reactor comprises a shell and a reactor body, wherein the reactor body is arranged in the shell, the reactor body is a hollow water-cooled reactor, a coil of the hollow water-cooled reactor is coiled and wound by a copper foil, the section of the coil of the hollow water-cooled reactor is in a spiral line structure, and the middle of the coil of the hollow water-cooled reactor is hollow; the coil of the hollow water-cooling reactor is fixed in the metal ring and then fixed on the fixed base of the shell through the metal ring.

Further, the two reactor bodies are arranged in the shell in parallel in a combined mode, the fixed bases of the two reactor bodies are respectively arranged on two opposite surfaces of the middle inside the shell, and the metal rings are fixed on the fixed bases in an inclined mode through fastening screws to form an inclined symmetrical arrangement structure of the two reactor bodies in the shell.

Furthermore, the metal ring is a stainless steel cylinder, the stainless steel cylinder is wrapped on the periphery of the coil, a 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 instant heavy current, so that the coil is not deformed.

Furthermore, the stainless steel cylinder is an open cylinder, stainless steel fixing plates are welded on two sides of the opening, bolt holes are preset in the stainless steel fixing plates, and the stainless steel cylinder is contracted by fastening stainless steel bolts when the hollow water-cooled reactor is assembled, so that the coil is hooped.

Further, the inlet wire and the outlet wire end of the coil of the hollow water-cooled reactor are connected through the arc lead-out wire connector, so that the overall shape of the coil is more approximate to a circle, and Lorentz forces born by all parts of the coil under instantaneous heavy current are uniformly distributed in the radial direction.

Further, the coil is made to be more approximate to a circle in overall shape, namely the coil inner structure of the coil outlet line is arc-shaped, the first line is embedded and fixed on the coil mould core, the tail line is positioned first, and finally the tail line is fixed on the shell of the reactor; meanwhile, a gap inside the coil is continuously padded by adopting a plurality of sections of arc-shaped padding plates at the micro gap inside the coil; the same material is used to fill the gap between the outer periphery of the coil and the stainless steel cylinder when assembled with the stainless steel cylinder.

Further, the arc lead-out wire connector is arc-shaped, the section of the inner section of the coil outlet line of the air-core water-cooled reactor is internally embedded and fixed on the coil die core, so that the upper surface of the coil first line is arc-shaped, the phenomenon that the upper surface of the coil first line protrudes to influence the circular winding of the coil is eliminated, and therefore, when the adjacent coil of the coil first line is wound, the coil is more approximate to a circle, and the wound coil is approximate to the circle.

Further, the arc lead-out wire connector is formed by dividing a part for connecting the air-core water-cooling reactor coil outlet row with the air-core water-cooling reactor coil 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.

Furthermore, the elastic heat-conducting glue is integrally encapsulated in the shell, and plays a role in buffering, so that slight deformation of the coil under the lorentz force can be resisted.

Further, the coil outlet row of the coil radiates heat by water cooling, and the coil body radiates heat to the surface of a product through heat transfer of a high heat conduction material; the water cooling heat dissipation is to adhere a water cooling heat dissipation plate to the surface of the coil outlet line, so that heat of the coil is transferred to the water cooling heat dissipation plate in a conduction mode and carried by water.

The utility model has the beneficial effects that:

the utility model utilizes the combination of foil winding electromagnetic coils, and through changing the structure of the wire outlet row, the Lorentz force of the coil can be reduced by times, then the Lorentz force of the coil in the radial direction can be uniform by designing a coil with approximate circular shape, the Lorentz force is resisted by a stainless steel cylinder with special structure, and then the soft material is used for filling to absorb the Lorentz force so as to lead the coil and a structural member to generate micro deformation. Meanwhile, the flexible material with high heat conductivity and the water-cooled radiator attached to the surface of the outlet line can ensure that the heating of the product is controlled within the index range during normal operation.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a right side schematic view of FIG. 1;

FIG. 3 is a schematic top view of FIG. 2;

FIG. 4 is a schematic view of a partial A enlarged structure of FIG. 1;

FIG. 5 is a schematic view of the cross-sectional B-B structure of FIG. 1;

fig. 6 is a schematic diagram of a foil winding electromagnetic coil structure according to the present utility model.

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, the hollow water-cooled reactor 1 comprises a shell 2 and a reactor body 3, wherein the reactor body 3 is arranged in the shell 2, the reactor body 3 is a hollow water-cooled reactor, a coil 4 of the hollow water-cooled reactor is coiled and wound by a copper foil, the section of the coil 4 of the hollow water-cooled reactor is in a spiral line structure, and the middle of the coil 4 of the hollow water-cooled reactor is hollow; the coil 4 of the hollow water-cooled reactor is fixed in the metal hoop 5 and then fixed on the fixed base 6 of the shell 2 through the metal hoop 5.

The number of the reactor bodies 3 is two, the two reactor bodies 3 are arranged in the shell 2 in parallel in a combined manner, and the two reactor bodies 2 are wrapped in the metal hoops 5; the metal hoop 5 comprises a stainless steel cylinder 22, the stainless steel cylinder 22 is wrapped on the periphery of the coil, and a gap between the periphery of the coil and the stainless steel cylinder is filled with a hard material; therefore, the stainless steel cylinder can resist Lorentz force generated by instantaneous heavy current, and meanwhile, the coil is not deformed through filling of a rigid material into a gap, so that the coil can be effectively prevented from being burst. The manufacturing method comprises the steps of firstly, performing strength calculation according to the simulated lorentz force, and determining the thickness of the stainless steel cylinder; the stainless steel cylinder cannot be closed, is designed to be in an opening shape, 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 hollow water-cooling reactor is assembled, so that the coil is hooped.

Preferably, the stainless steel cylinder 22 is an open cylinder, and a notch groove 7 is formed on the circumference of the stainless steel cylinder 22 along the axis of the stainless steel cylinder 22, so that the section of the stainless steel cylinder forms a C shape; stainless steel fixing plates 8 are welded on two sides of the opening, bolt holes are preset in the stainless steel fixing plates 8, and when the hollow water-cooled reactor is assembled, the stainless steel cylinder is contracted by fastening the stainless steel bolts 9 so as to tighten the coil; thus, the reactor body 3 can be further ensured to form a compact round shape, and the explosion of the coil is effectively prevented.

The fixed bases 6 of the two metal hoops 5 are respectively arranged in the middle of the inner side of the shell 2, the two fixed bases 6 are oppositely arranged on the inner surface of the shell 2, and the mounting surfaces 9 of the fixed bases 6 are obliquely arranged, so that the stainless steel fixed plates 8 are fixed on the fixed bases 6 in an oblique mode by fastening stainless steel bolts 24, and an oblique symmetrical arrangement structure of the two reactor bodies in the shell is formed. In this way, the series-parallel combination of two or more coils changes the inductance and the current, so that the Lorentz force is effectively reduced. The inventor finds that the lorentz force can be effectively reduced by reducing the diameter of the coil in experimental study, and when a plurality of coils are arranged in the shell, the lorentz force can be reversely counteracted by connecting the coils if the coils are properly arranged, so that the influence of the lorentz force is further eliminated.

The inlet wire and the outlet wire end of the coil 4 of the hollow water-cooling reactor are connected through the arc lead-out wire connector 10, so that the overall shape of the coil 4 is more approximate to a circle, and Lorentz forces born by all parts of the coil under instantaneous heavy current are uniformly distributed in the radial direction.

The joint of the coil outgoing line row of the hollow water-cooled reactor is changed from the conventional purely square flaky joint into an arc outgoing line joint 10 with an arc-shaped section; the coil 4 of the hollow water-cooling reactor is embedded and fixed on the coil die core 11, so that the upper surface of the coil first row is arc-shaped, the phenomenon that the upper surface of the coil first row protrudes to influence the circular winding of the coil is eliminated, and therefore, when the adjacent coil of the coil 4 first row is wound, the coil is also more approximate to a circle, and the whole wound coil 4 is approximate to a circle.

Preferably, the coil 4 is made to be more nearly circular in overall shape, namely, the inner section 13 of the coil of the arc lead-out wire joint 10 of the hollow water-cooled reactor is designed into an arc shape, the first row 12 of the coil 4 is embedded and fixed on the coil die core 11, the tail row 21 of the coil 4 is positioned firstly, then is wrapped by a stainless steel cylinder, and finally is fixed on the shell of the reactor; meanwhile, a gap inside the coil is continuously padded by adopting a plurality of sections of arc-shaped padding plates 25 at the tiny gap inside the coil; the same material is used to fill the gap between the outer periphery of the coil and the stainless steel cylinder when assembled with the stainless steel cylinder.

Preferably, the arc lead-out wire connector 10 is formed by dividing the part of the hollow water-cooled reactor coil outlet row connected with the hollow water-cooled reactor coil 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.

The elastic heat-conducting glue 13 is integrally encapsulated in the shell, one or more hollow water-cooled reactor bodies are assembled and fixed and then are placed into the box body, and then the elastic heat-conducting glue 13 is integrally encapsulated, and has a buffering effect and can resist slight deformation of the coil under the lorentz force.

The arc lead-out wire connector 10 of the coil is uniformly fixed on the shell 2 by an insulating fastening assembly 15, the end part of the arc lead-out wire connector 10 is cooled by water to dissipate heat, and the coil body is transferred to the surface of a product by high heat conduction material to dissipate heat; the water cooling heat dissipation is that a water cooling heat dissipation plate 14 is mounted on the side surface of the end part of the arc lead-out wire connector 10 in a tightly attached mode through a fastening piece 16, so that heat of a coil is transferred to the water cooling heat dissipation plate in a conduction mode and carried by water; and the heat dissipation surface of the coil 4 body transfers heat to the surface of the box body through the high-heat-conductivity potting material for dissipating heat, and meanwhile, the surface of the coil outlet row 12 is stuck with a water-cooling heat dissipation plate, so that the heat of the coil is transferred to the water-cooling heat dissipation plate in a conduction mode and carried away by water. Because the reactor has the characteristics of small inductance and large current, the length of the conductor is not long, and the thermal resistance of the conductor in the length direction is not too large during heat conduction, so that a water-cooling radiator on the wire outlet row can take away a large part of coil heat.

The insulation fastening assembly 15 comprises a shell insulation sleeve 17 arranged on the shell 2, an outgoing line insulation sleeve 18 arranged on the arc outgoing line connector 10 and a locking fixing screw 19, wherein the locking fixing screw 19 penetrates through the outgoing line insulation sleeve 18 and is locked and fixed on the shell 2 by a nut 20.

Example two

The principle of the second embodiment is the same as that of the first embodiment, but the structure is different, the hollow water-cooled reactor is a single-coil foil winding electromagnetic coil, a plurality of coiling modes are adopted to coil the hollow water-cooled reactor coils, the hollow water-cooled reactor coils are placed in a shell, and the coils are coiled according to a circle when coiling, so that the coiled hollow water-cooled reactor coils are in a shape similar to the circle, the distribution state of Lorentz force of the hollow water-cooled reactor coils is improved, and the hollow water-cooled reactor coils are reinforced to prevent the hollow water-cooled reactor coils from being deformed under the condition of instantaneous heavy current to cause burst.

The number of the coils is only 4, and the coils are arranged in the shell at equal intervals in two rows; in this way, the Lorentz forces of the four coils are opposite in direction through reasonable serial-parallel connection, so that the influence of the Lorentz forces generated by a large part of coils is eliminated.

The hollow water-cooled reactor coil manufacturing at least 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 coil head of the hollow water-cooled reactor is embedded and fixed on the coil mould core, so that the upper surface of the coil head is arc-shaped, the phenomenon that the upper surface of the coil head protrudes to influence the circular winding of the coil is eliminated, and therefore, when the coil adjacent to the coil head is wound, the coil is more approximate to the circular shape, the tail row of the coil of the hollow water-cooled reactor is positioned according to the circular shape firstly and is finally fixed on the reactor shell, and the wound coil is approximate to the circular shape; the tail row of the air-core water-cooling reactor 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 shell;

7) Filling and sealing the gap in the shell; and filling the whole shell with elastic heat-conducting glue.

The hollow water-cooled reactor coil assembly needs to be noted for the following points:

1, firstly, straightening a coil, and enabling an outgoing line row to be vertical;

2, rotating the stainless steel hoop to enable a fixed plate of the stainless steel hoop to be clung to a fixed base of the bottom plate and the top plate;

filling gaps in the stainless steel hoops with backing plates, and locking the stainless steel hoops to tighten the whole coil;

4, fixing the outlet line on the top plate, paying attention to putting through the screw insulating gasket according to the illustrated position;

5, placing an insulating partition plate and an M12 penetrating bolt insulating washer between the fixing plates of the stainless steel hoops and on the fastening bolts according to the drawing;

6, assembling a side plate and a back plate;

7, integrally encapsulating heat-conducting silica gel;

8, fixing the water cooling plate on the outlet line according to the illustration;

9, connecting three water-cooling plate waterways in series by using an FEP pipe and a festo joint according to the illustration;

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 utility model improves the Lorentz force influence of the hollow water-cooled reactor coil and prevents the hollow water-cooled reactor coil from instantaneous heavy current. Has the following advantages:

1) The hollow water-cooling reactor coil is wound by the copper strips, and the shape of the hollow water-cooling reactor coil is designed to be infinitely approximate to a circle, so that the Lorentz force applied to the coil under the 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 water-cooled 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 (1)

1. The utility model provides a foil winding solenoid's air-core water-cooling reactor, air-core water-cooling reactor includes casing and reactor body, and the reactor body is installed in the casing, its characterized in that: the reactor body is an air-core water-cooling reactor, a coil of the air-core water-cooling reactor is coiled and wound by a copper foil, the section of the coil of the air-core water-cooling reactor is in a spiral line structure, and the middle of the coil of the air-core water-cooling reactor is hollow; the coil of the hollow water-cooling reactor is fixed in the metal ring and then fixed on the fixed base of the shell through the metal ring; the reactor comprises two reactor bodies, wherein the two reactor bodies are arranged in parallel in the shell in a combined manner, the fixed bases of the two metal rings are respectively arranged in the middle of the inner parts of the side surfaces of the shell, the two fixed bases are oppositely arranged on the inner surface of the shell, and the mounting surfaces of the fixed bases are obliquely arranged, so that the metal ring fixed plates are fixed on the fixed bases in an oblique manner through fastening stainless steel bolts, and an oblique symmetrical arrangement structure of the two reactor bodies in the shell is formed; the inlet wire and the outlet wire end of the coil of the hollow water-cooled reactor are connected through arc lead-out wire connectors, so that the overall shape of the coil is more approximate to a circle, and Lorentz forces born by all parts of the coil under instantaneous heavy current are uniformly distributed in the radial direction; the arc lead-out wire connector of the coil is uniformly fixed on the shell by an insulating fastening component, and the end part of the arc lead-out wire connector is cooled by water; the heat dissipation is that a water-cooling heat dissipation plate is closely mounted on the side surface of the end part of the arc lead-out wire connector through a fastener, so that the heat of the coil is transferred to the water-cooling heat dissipation plate in a conduction mode and carried away by water; the heat dissipation surface of the coil body transfers heat to the surface of the box body through the high-heat-conductivity potting material to dissipate heat, and meanwhile, the water-cooling heat dissipation plate is attached to the surface of the coil outlet line, so that the heat of the coil is transferred to the water-cooling heat dissipation plate in a conduction mode and is carried away by water; the insulation fastening assembly comprises a shell insulation sleeve arranged on the shell, an outgoing line insulation sleeve arranged on the arc outgoing line connector and a locking fixing screw rod, wherein the locking fixing screw rod penetrates through the outgoing line insulation sleeve and is fastened on the shell through a nut lock.