CN219936823U - High-power vertical wind cooling reactor - Google Patents

Abstract

The utility model provides a high-power vertical-winding air-cooled reactor, which comprises: an iron core mounted between the upper yoke and the lower yoke; a plurality of turns, wherein the turns are sleeved on the iron core and are spaced from each other, so that inter-turn gaps are formed; and filling a positioning structure for reducing relative movement between adjacent turns in the inter-turn gaps so that a plurality of turns form an integrally fixed coil. According to the utility model, the heat shrinkage cloth or the comb-shaped insulating plate with the wavy positioning structure is used for ensuring the inter-turn gaps of the standing winding coil, the inter-turn gaps can be quickly plugged and tensioned by the fastening piece, the integrally fixed coil is formed, the efficiency of manufacturing the finished product reactor is improved, and the manufacturing and popularization of the reactor with the coil with the standing winding structure are facilitated.

Description

High-power vertical wind cooling reactor

Technical Field

The utility model relates to the technical field of reactors, in particular to a high-power vertical-winding air-cooled reactor.

Background

The reactor is also called an inductor, and when one conductor is electrified, a magnetic field is generated in a certain space occupied by the conductor, so that all the conductors capable of carrying current have a common sense of inductance. However, the inductance of the electrified long straight conductor is smaller, and the generated magnetic field is not strong, so that the actual reactor is in a form of a solenoid formed by winding a wire, namely an air core reactor; sometimes, in order to make the solenoid have a larger inductance, a core, called a core reactor, is inserted into the solenoid. Reactance is classified into inductive reactance and capacitive reactance, and a comparatively scientific classification is that inductive reactance and capacitive reactance are collectively called a reactor, however, since an inductor has been previously known in the past and is called a reactor, a capacitor is now called a capacitive reactance, and a reactor is exclusively called an inductor.

Reactors employed in power systems are commonly known as series reactors and shunt reactors. Series reactors are mainly used to limit short-circuit currents, and also in series or parallel with capacitors in filters to limit higher harmonics in the grid. Reactors in power grids of 10kV, 35kV, etc. are used to absorb the charging capacitive reactive power of the cabling. The operating voltage can be adjusted by adjusting the number of shunt reactors. The ultra-high voltage shunt reactor has a plurality of functions for improving the reactive power related running condition of the power system.

Currently, since high-power (higher than 100 kVA) reactors need to be quiet and stable in operation, coils (or coils) are mostly foil-wound structures, i.e., copper or aluminum foil is wound into a desired coil by a foil winding machine. In the foil winding structure, the coil is wound by copper or aluminum foil in a circle-by-circle mode, and the copper or aluminum foil is subjected to surface insulation treatment, and the layers are directly wrapped and pressed without considering the space (the air passage is reserved), so that the coil has a good silencing effect in operation. The vertical winding structure is influenced by the structure of the coil, so that the coil volume and the noise generated during operation are large, and the vertical winding structure cannot be popularized and used all the time.

Disclosure of Invention

The utility model aims to provide a high-power vertical winding air-cooled reactor so as to solve the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

a high power vertical wind air cooled reactor comprising:

an iron core mounted between the upper yoke and the lower yoke;

a plurality of turns, wherein the turns are sleeved on the iron core and are spaced from each other, so that inter-turn gaps are formed;

and filling a positioning structure for reducing relative movement between adjacent turns in the inter-turn gaps so that a plurality of turns form an integrally fixed coil.

Preferably, the upper yoke and the lower yoke are fastened by a fastener penetrating through the mounting lugs of the upper yoke and the lower yoke.

Preferably, terminals connected to the coils are mounted on the upper yoke and the lower yoke.

Preferably, the positioning structure comprises a flexible or anti-flexible member.

Preferably, the flexible piece comprises heat-shrinkable cloth, the heat-shrinkable cloth is wavy and is provided with a notch, and the opening size of the notch is matched with the thickness of the coil.

Preferably, the protruding portion is a flexible protrusion, the flexible protrusion is fixed with the insulating plate, the clamping portion is a notch, and the opening size of the notch is matched with the thickness of the coil.

Preferably, the protruding portion is a rigid protrusion, the rigid protrusion is movably connected with the insulating plate, and the clamping portion is a bayonet with variable spacing.

Preferably, an insulating spacer is installed between the coil and the upper and lower yokes.

Preferably, an L-shaped stay is arranged between the coil and the iron core.

Preferably, an outer plate is arranged around the coil, and the positioning structure is positioned on the outer side of the coil.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the coil is vertically wound with the flat copper wire or the flat aluminum wire, so that the size and the weight of the whole coil can be effectively reduced, and the positioning structure is convenient to use, so that the positioning structure is attached to the coil.

According to the utility model, through the positioning structure, the heat-shrinkable cloth or the comb-shaped insulating plate is in a wave shape, so that gaps among turns of the vertical winding coil are ensured, and the following effects are achieved: the coil heat dissipation area is greatly increased, the temperature rise is lower, the inter-turn electrical safety distance is large under the condition of inter-turn gaps, the product iron core and the coil are safer, the material consumption is small, the size is small, the inter-turn operation is fixed, the coil vibration and the coil size are reduced while the heat dissipation is ensured, the mass production operation is convenient, and the coil and the reactor with the mute structure can be rapidly manufactured. Because the thermal shrinkage cloth or the comb-shaped insulating plate is adopted, the inter-turn gap can be quickly plugged and tensioned by the fastener, the integrally fixed coil is formed, the efficiency of manufacturing the finished product reactor is improved, and the reactor of the coil with the vertical winding structure is convenient to manufacture, popularize and use.

According to the utility model, the L-shaped stay is arranged between the coil and the iron core, so that the insulation distance is ensured, and the air duct of the coil and the iron core is increased, thereby facilitating heat dissipation.

According to the utility model, the outer plate is added on the periphery of the reactor, and the wind speed is increased so as to be better cooled.

Drawings

FIG. 1 is a three-dimensional schematic view of the overall structure of the present utility model;

FIG. 2 is a schematic illustration of a portion of an outer panel of the present utility model removed;

FIG. 3 is a schematic illustration of the lower yoke of FIG. 2 with the lower yoke removed in accordance with the present utility model;

FIG. 4 is a schematic view of a positioning structure and a coil according to the present utility model;

FIG. 5 is a schematic diagram of a positioning structure and coil according to another embodiment of the present utility model;

FIG. 6 is a second schematic diagram of the positioning structure and coil of the present utility model;

FIG. 7 is a flow chart of a method of making the present utility model;

fig. 8 is a coil schematic of a foil wound structure.

In the figure: 1 coil, 2 upper yoke, 3 insulating baffle, 4 mounting ear, 5 location structure, 6 planking, 7 fastener, 8 terminal, 9 turns, 10 inter-turn gaps, 11 pyrocondensation cloth, 12 insulation board, 13 breach, 14 flexible protrusion, 15 lower yoke, 16 rigid protrusion, 17 bayonet socket, 18 iron core, 19L formula stay, 20 copper or aluminium foil.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. 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.

Examples:

referring to fig. 1 to 8, the present utility model provides a technical solution:

a high-power vertical wind air-cooled reactor:

an iron core 18 is arranged on the lower yoke 15, and the lower yoke 15 is provided with an insulating partition plate 3 and then the iron core 18;

making a plurality of turns 9 by adopting flat wires, sequentially sleeving the turns 9 on an iron core 18, and forming inter-turn gaps 10 by spacing adjacent turns 9;

the inter-turn gaps 10 are filled with positioning structures 5 for reducing relative movement between adjacent turns 9, so that a plurality of turns 9 form an integrally fixed coil 1, and the coil 1 is spiral;

the upper yoke 2 is covered on the coil 1, then a plurality of turns 9 and a positioning structure 5 filled in a turn-to-turn gap 10 part are tensioned through the mounting lugs 4 of the upper yoke 2 and the lower yoke 15 by using a fastener 7, and the specific upper yoke 2 is firstly provided with an insulating partition plate 3 and then is covered on the coil 1;

terminals 8 are respectively mounted to the upper yoke 2 and the lower yoke 15 and connected with the coil 1 to form a reactor, which is a high-power vertical wind cooling reactor, and the power range is preferably 100KVA to 1000KVA.

In the utility model, the coil 1 adopts the vertically wound flat copper wire or the vertically wound flat aluminum wire, so that the size and the weight of the whole coil can be effectively reduced, and the positioning structure 5 is convenient to use, so that the positioning structure 5 is attached to the coil 1.

Specifically, an outer plate 6 is installed around the formed reactor, and the positioning structure 5 is located outside the coil 1

In particular, the positioning structure 5 comprises a flexible or anti-flexible member. The flexible piece comprises heat-shrinkable cloth 11, wherein the heat-shrinkable cloth 11 is wavy and is provided with a notch 13, and the opening size of the notch 13 is matched with the thickness of the coil 9.

In the utility model, the positioning structure 5 is adopted to prevent the coil 1 from vibrating during operation, so that the noise generated by the coil 1 during operation can be reduced. In addition, when manufacturing the reactor, since the positioning structure 5 is an integrated component, the coil 1 can be inserted into the inter-turn gap 10 after being mounted on the iron core 18, and the manufacturing efficiency of the reactor, particularly the vertical winding structure coil reactor, is greatly improved.

As shown in fig. 4, the heat shrinkage cloth 11 has flexibility, and is in a wave shape or square wave shape, a serpentine shape, an S shape and a W shape along the side surface of the vertical coil 1, so as to fill the inter-turn gaps 10, prevent vibration between the turns 9 when the coil 1 works, and form an air duct with the outer plate 6 to increase the heat dissipation area.

Specifically, the flex comprises an insulating plate 12, protruding portions are arranged on the insulating plate 12, clamping portions are formed between adjacent protruding portions, the clamping portions are used for clamping the side edges of the turns 9, and the whole flex is comb-shaped.

As shown in fig. 5, the protruding portion is a flexible protrusion 14, and the flexible protrusion 14 is fixed to the insulating plate 12, the clamping portion is a notch 13, and the opening size of the notch 13 is adapted to the thickness of the turn 9. Because the protrusions are flexible, the coil 1 can be compressed when the upper yoke 2 and the lower yoke 15 are tightened by the fastener 7, so that the inter-turn gap 10 is relatively reduced, and the flexible protrusions 14 filled in the inter-turn gap 10 have a certain ductility, so that the extrusion caused by the relatively reduced inter-turn gap 10 can be adapted. Since the coil 1 is made of flat wire, and by compressing the coil 1, the volume of the coil 1 (especially the height of the coil 1) can be relatively reduced, and the flexible protrusions 14 can meet the requirement that an inter-turn gap 10 with a very small distance is arranged between adjacent turns 9, so that the heat dissipation performance and the insulation performance of the coil are ensured, and vibration between the turns 9 can be relieved or avoided.

Specifically, as shown in fig. 6, the protruding portion is a rigid protrusion 16, the rigid protrusion 16 is movably connected with the insulating plate 12, and the clamping portion is a bayonet 17 with a variable interval. The protruding portion is a rigid protruding portion 16, in contrast to the flexible protruding portion 14, but in order to better adapt to the extrusion caused by the relatively reduced inter-turn gap 10, the rigid protruding portion 16 is movably connected with the insulating plate 12, specifically, a sliding groove is formed in the side surface of the insulating plate 12, one end of the rigid protruding portion 16 is located in the sliding groove, and can slide in the sliding groove, and the two may be in interference fit. The rigid protrusions 16 can slide, so that the gap between turns 10 can be changed along with the change of the gap between turns 10, the gap between turns 10 can be better adapted, meanwhile, the heat dissipation performance and the insulation performance of the coil can be realized, and vibration between turns 9 can be relieved or avoided.

The material of the insulating plate 12 may be an epoxy plate or a high temperature rubber mat.

Specifically, an insulating spacer 3 is installed between the coil 1 and the upper yoke 2 and the lower yoke 15. An L-shaped stay 19 is provided between the coil 1 and the core 18. An L-shaped stay 19 is arranged between the coil 1 and the iron core 18, so that the insulation distance is ensured, and the air duct of the coil 1 and the iron core 19 is increased, thereby facilitating heat dissipation.

In the present utility model, the same layer of turns 9 has a greater height in the axial direction of the coil 1 than in the radial direction. In the foil winding structure, as shown in fig. 8, since the coil 1 is wound around copper or aluminum foil 20, it is wound around flat. The A face represents the face with the width and the B face represents the narrow face. The A-side width is greater than the B-side thickness. Therefore, the flat coil 1 is a plurality of coils in the radial direction, which results in thicker coil 1 and larger volume, and the heat dissipation effect is poor because of the close contact between the coils. The narrow side/surface of the flat wire is wound vertically, the B surface is used for unwinding, and the whole wire is vertical. Compared with the prior art, the coil has the advantages that 1 circle of coils is vertically wound in the radial direction, the volume is small, and heat dissipation is convenient.

According to the utility model, the outer plate 6 is added on the periphery of the reactor, and the wind speed is increased so as to be better cooled.

The method for manufacturing the reactor is shown in fig. 7.

According to the utility model, through the positioning structure 5, the positioning structure 5 is a wave-shaped heat shrinkage cloth 11 or a comb-shaped insulating plate 12, so that gaps among turns of the standing coil are ensured, and the following effects are achieved: 1. the coil radiating area is greatly increased, the temperature rise is lower, the inter-turn electrical safety distance is large and safer under the condition of having inter-turn gaps 10, 3, the product iron core and the coil are few in material consumption, the size is small, 4, the coil is fixed during inter-turn operation, the coil 1 vibration and the coil size are reduced while the heat dissipation is ensured, 5, the structure is convenient for mass production operation, and the coil 1 and the reactor with the mute structure can be rapidly manufactured. 6. Because the thermal shrinkage cloth 11 or the comb-shaped insulating plate 12 is adopted, the inter-turn gap 10 can be quickly plugged and tensioned by the fastener 7, an integrally fixed coil is formed, the efficiency of manufacturing a finished reactor is improved, and the reactor of the coil 1 with the vertical winding structure is convenient to manufacture, popularize and use.

According to the utility model, the flat wire narrow side/surface vertical winding is adopted, the original loose coil 1 is not vibrated any more, so that a whole is formed, the technical problem of high vibration noise of the high-power vertical winding air-cooled reactance coil is solved, meanwhile, the processing is simple and quick, the large-scale production, the manufacturing and the popularization are convenient, and the reactor has the advantages of small volume, low cost, material saving and the like aiming at the traditional foil winding high-power air-cooled reactance, and is more competitive.

The remaining non-described portions of the present utility model may be the same as, or known in the art or may be implemented using, the prior art, and are not described in detail herein.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. A high power vertical wind air-cooled reactor, comprising:

an iron core (18), the iron core (18) being mounted between the upper yoke (2) and the lower yoke (15);

a plurality of turns (9), wherein the turns (9) are sleeved on the iron core (18), and adjacent turns (9) are spaced, so that inter-turn gaps (10) are formed;

the inter-turn gaps (10) are filled with positioning structures (5) for reducing relative movement between adjacent turns (9) so that the turns (9) form an integrally fixed coil (1).

2. A high power vertical wind air-cooled reactor according to claim 1, characterized in that the upper yoke (2) and the lower yoke (15) are fastened by fasteners (7) through the mounting lugs (4) of the upper yoke (2) and the lower yoke (15).

3. A high power vertical wind air cooled reactor as claimed in claim 1, wherein terminals (8) connected to the coil (1) are mounted on the upper yoke (2) and the lower yoke (15).

4. A high power vertical wind air cooled reactor as in claim 1, wherein the positioning structure (5) comprises a flexible or flex resistant member.

5. The high-power vertical wind air-cooled reactor according to claim 4, wherein the flexible piece comprises heat-shrinkable cloth (11), the heat-shrinkable cloth (11) is wavy and is provided with a notch (13), the opening size of the notch (13) is matched with the thickness of the coil (9), the flex comprises an insulating plate (12), protruding portions are arranged on the insulating plate (12), clamping portions are formed between adjacent protruding portions, and the clamping portions are used for clamping in the side edges of the coil (9).

6. The high-power vertical-winding air-cooled reactor according to claim 5, wherein the protruding part is a flexible protrusion (14), the flexible protrusion (14) is fixed with the insulating plate (12), the clamping part is a notch (13), and the opening size of the notch (13) is matched with the thickness of the coil (9).

7. The high-power vertical wind air-cooled reactor according to claim 5, wherein the protruding part is a rigid protrusion (16), the rigid protrusion (16) is movably connected with the insulating plate (12), and the clamping part is a bayonet (17) with a variable interval.

8. A high power vertical wind air cooled reactor as claimed in claim 1, wherein an insulating spacer (3) is mounted between the coil (1) and the upper (2) and lower (15) yokes.

9. A high power vertical wind air cooled reactor as in claim 1, wherein an L-shaped stay (19) is provided between the coil (1) and the core (18).

10. A high power vertical wind air cooled reactor as in claim 1, wherein an outer plate (6) is mounted around the coil (1), and the positioning structure (5) is located outside the coil (1).