Air gap adjusting type arc suppression coil with movable iron core

Abstract

The utility model provides an air gap adjusting type arc suppression coil with a movable iron core, which belongs to the technical field of arc suppression coils, and comprises a gap type arc suppression coil mechanism, the gap type arc suppression coil mechanism comprises a first support and a second support, an automatic tuning arc suppression coil is arranged between the first support and the second support, and a movable iron core is arranged between the first support and the second support. The automatic tuning arc suppression coil comprises a stator iron core, a rotor iron core and an arc suppression coil body, the arc suppression coil body is wound on the stator iron core, and the rotor iron core rotates in a cavity of the stator iron core. The impedance of the arc suppression coil is changed by utilizing the change of the air gap space, the stepping motor is adopted to drive the inductance coil iron core to adjust the air gap and compensate the inductance current, after high voltage is applied to the arc suppression coil, almost no vibration noise exists, the problems of internal looseness and larger and larger noise along with the increase of the service time do not exist, and the arc suppression coil has certain practical value.

Description

TECHNICAL FIELD

[0001] The utility model mainly relates to the technical field of arc suppression coil, specifically is a kind of adjustable air gap type arc suppression coil with movable core. BACKGROUND

[0002] Arc suppression coil is a kind of inductance coil with core, connect between the neutral point of transformer (or generator) and ground, constitute arc suppression coil grounding system, its main function is to compensate the capacitive current in power grid, make the current of grounding fault point reduce to the range that can self-extinguish, to rapidly eliminate grounding fault, avoid the generation of arc and overvoltage.

[0003] At present, in the existing arc suppression coil, core is in the arc suppression coil with direct movement mode operation, direct movement type core usually relies on mechanical transmission device to realize movement, and mechanical transmission exists inertia, friction and other problems, so that the position adjustment speed of core is limited, cannot quickly track the change of power grid parameter, difficult to realize effective compensation to capacitive current in short time, and in some occasions with higher requirement for fast response, it can not meet the demand, and during the direct movement of core, especially under high voltage, vibration will be generated between mechanical parts, and then generate larger noise, and with the growth of use time, internal mechanical structure can be more and more loose, and noise can be more and more large, which not only will cause impact on working environment, but also can affect the normal operation and monitoring of equipment. UTILITY MODEL CONTENTS

[0004] The utility model technical scheme is to the technical problem that prior art solution is too single, provides the solution significantly different from prior art, specifically the utility model mainly provides a kind of adjustable air gap type arc suppression coil with movable core to solve the technical problem that the core is in the arc suppression coil with direct movement mode operation in the above background art, but this operation mode has certain drawbacks, when high voltage is implemented on it, there is the technical problem that internal looseness and noise become larger and larger with the growth of use time.

[0005] The utility model solves the technical problem that the technical scheme is as follows:

[0006] A kind of adjustable air gap type arc suppression coil with movable core, including gap type arc suppression coil mechanism, the gap type arc suppression coil mechanism includes first support and second support, two supports are distributed in parallel, and automatic tuning arc suppression coil is provided between the first support and second support, the automatic tuning arc suppression coil includes stator core, rotor core and arc suppression coil body, and the arc suppression coil body is wound on stator core, and rotor core rotates in the cavity of stator core.

[0007] Furthermore, multiple slots are provided on both sides of the inner surface of the stator core, and the slots on both sides are symmetrically distributed, with the arc suppression coil body located inside the slots.

[0008] Furthermore, the two ends of the rotor core are rotatably connected to the first support and the second support, respectively, and a bearing is provided at the gap between the rotor core and the support.

[0009] Furthermore, the rotor core has a spindle-shaped structure.

[0010] Furthermore, the first support and the second support are both provided with a base on their lower sides, and the stator core is located on the base.

[0011] Furthermore, a stepper motor is provided on the base, and the output end of the stepper motor is connected to one end of the rotor core.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This invention, through the arrangement of a first support, a second support, a stator core, a rotor core, a wire groove, an arc-suppression coil body, and a stepper motor, achieves the fabrication of an inductor coil core with an air gap and rotatable design. The change in the air gap space alters the impedance of the arc-suppression coil. A stepper motor drives the inductor coil core to adjust the air gap, compensating for the inductor current. The stepper motor directly drives the rotor core components, ensuring high precision in air gap adjustment to meet on-site requirements. The adjustment can be performed under normal energized operation, and the ratio of the upper and lower limits of the inductance adjustment range is [insert ratio here]. Without the up-and-down moving parts found in traditional structures, it exhibits almost no vibration or noise when subjected to high pressure. It also avoids the problem of internal loosening and increasing noise over time, thus possessing practical value.

[0014] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0015] Figure 1 This is a schematic plan view of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram showing the rotation direction of the rotor core of this utility model;

[0017] Figure 3 This is a schematic diagram of the winding direction of the arc suppression coil body of this utility model;

[0018] Figure 4 The arc suppression coil body inductance of this utility model A changing coordinate graph.

[0019] In the figure: 1, gap type arc-extinguishing coil mechanism; 11, first support; 12, second support; 13, automatic tuning arc-extinguishing coil; 131, stator core; 132, rotor core; 133, wire slot; 134, arc-extinguishing coil body; 14, base; 15, stepping motor; 16, bearing.

[0020] In the figure: 1, gap type arc-extinguishing coil mechanism; 11, first support; 12, second support; 13, automatic tuning arc-extinguishing coil; 131, stator core; 132, rotor core; 133, wire slot; 134, arc-extinguishing coil body; 14, base; 15, stepping motor; 16, bearing. DETAILED DESCRIPTION

[0021] For the purpose of facilitating the understanding of the present application, the present application will be described in more detail below with reference to the relevant drawings, which show several embodiments of the present application. However, the present application can be realized in different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present application more thorough and comprehensive.

[0022] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there can be an intervening element. The terms "vertical", "horizontal", "left", "right", and similar expressions used herein are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0024] Please refer to the drawings carefully Figures 1-4 The present application provides a kind of adjustable gap type arc-extinguishing coil with movable core, including gap type arc-extinguishing coil mechanism 1, the gap type arc-extinguishing coil mechanism 1 includes first support 11 and second support 12, two supports are distributed in parallel, and automatic tuning arc-extinguishing coil 13 is arranged between the first support 11 and the second support 12, the automatic tuning arc-extinguishing coil 13 includes stator core 131, rotor core 132 and arc-extinguishing coil body 134, and arc-extinguishing coil body 134 is wound on stator core 131, and rotor core 132 rotates in the cavity of stator core 131.

[0025] Through the above structure, the iron core of the arc suppression coil is made into a rotatable type with air gap, the change of the angle between the axis direction of the arc suppression coil air gap and the axis direction of the rotor realizes the change of the magnetic resistance of the arc suppression coil, and the magnetic resistance of the magnetic circuit is changed by rotating the rotor iron core 132 to achieve the purpose of continuously adjusting the inductance.

[0026] The rotor iron core 132 is controlled by an external controller to drive the stepping motor 15 to rotate, and when the rotor rotates at different positions, since the arc suppression coil body 134 is located in different wire slots 133, the rotor rotates to different wire slots 133 positions, which is equivalent to changing the gap between the arc suppression coil body 134 and the rotor iron core 132, and changing the angle between the axis of the arc suppression coil winding and the axis of the rotor iron core 132. For the arc suppression coil body 134, the magnetic resistance in space is not the same, so that the inductance of the arc suppression coil body 134 can be periodically changed with the rotation of the rotor iron core 132, and the inductance of the arc suppression coil body 134 is continuously adjustable. , wherein , The number of turns of the arc suppression coil body 134 winding and the arrangement of the arc suppression coil body 134 on the inner surface of the stator iron core 131 are related (the correlation criterion is that when the axis direction of the rotor iron core 132 and the axis direction of the arc suppression coil winding are perpendicular, the magnetic field generated by the current in the arc suppression coil body 134 passes through the stator iron core 131, the air gap, and the rotor iron core 132 to form a closed magnetic flux path, at this time, the magnetic flux encounters the maximum magnetic resistance and the minimum magnetic conductance, and the inductance is the minimum When the axis direction of the rotor iron core 132 and the axis direction of the arc suppression coil winding are consistent, the magnetic field generated by the current in the arc suppression coil body 134 passes through the stator iron core 131, the air gap, and the rotor iron core 132 to form a closed magnetic flux path, at this time, the magnetic flux encounters the minimum magnetic resistance and the maximum magnetic conductance, and the inductance is the maximum According to the needs, the , value can be designed as shown in the accompanying drawings, Figure 4 is the angle between the axis direction of the arc suppression coil winding and the axis direction of the rotor iron core 132.

[0027] Please refer to the accompanying drawings Figure 1 and the accompanying drawings Figure 2 , the inner surface of the stator iron core 131 is provided with a plurality of wire slots 133 on both sides, and the wire slots 133 on both sides are symmetrically distributed, the arc suppression coil body 134 is located in the wire slot 133, and the winding direction of the arc suppression coil body 134 on the wire slot 133 is as shown in the accompanying drawings Figure 3 ​​As shown, the winding is introduced from direction A of the stator core 131, passes through the first slot 133, and is wound along the circumference of the stator core 131 in direction B. A second slot 133 is selected with the axis of the stator core 131 as the center symmetrical point, the winding passes through again and returns to direction A. This process is repeated to obtain the arc-suppression coil winding. The two ends of the rotor core 132 are rotatably connected to the first support 11 and the second support 12, respectively. A bearing 16 is provided at the gap between the rotor core 132 and the support, allowing the rotor core 132 to rotate stably within the stator core 131. The rotor core 132 has a spindle-shaped structure, which allows the rotor to rotate stably within the stator core 131. When rotating, the air gap magnetic field distribution between the stator and the rotor is more uniform and reasonable. Compared with other shapes, it can better adapt to the distribution of electromagnetic force inside the motor, reduce magnetic field distortion, and thus improve the electromagnetic performance of the motor, such as reducing torque pulsation, making the motor run more smoothly, and the output torque more stable, which is conducive to improving the efficiency and power factor of the motor. The first support 11 and the second support 12 are jointly provided with a base 14, and the stator core 131 is located on the base 14. A stepper motor 15 is provided on the base 14. The output end of the stepper motor 15 is connected to one end of the rotor core 132. Through the stepper motor 15, the driving force for the rotation of the rotor core 132 is realized.

[0028] The present invention has been described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.

Claims

1. An arc suppressing coil with a movable core of the regulating gap type, comprising a gap type arc suppressing coil mechanism (1) comprising a first support (11) and a second support (12), the two supports being distributed in parallel, characterized in that, The first support (11) and the second support (12) are provided with an automatically-tuned arc extinguishing coil (13), the automatically-tuned arc extinguishing coil (13) comprises a stator core (131), a rotor core (132) and an arc extinguishing coil body (134), and the arc extinguishing coil body (134) is wound on the stator core (131), and the rotor core (132) rotates in the cavity of the stator core (131).

2. The adjustable air-gap arc suppression coil with a movable core according to claim 1, characterized in that, The inner surface of the stator core (131) is provided with a plurality of wire slots (133) on both sides, and the wire slots (133) on both sides are symmetrically distributed, and the arc extinguishing coil body (134) is located in the wire slot (133).

3. The adjustable air-gap arc suppression coil with a movable core according to claim 1, characterized in that, The both ends of the rotor core (132) are rotatably connected between the first support (11) and the second support (12), and the gap position of the rotor core (132) and the support is provided with a bearing (16).

4. The adjustable air-gap arc suppression coil with a movable core according to claim 3, characterized in that, The rotor core (132) is in a spindle structure.

5. The adjustable air-gap arc suppression coil with a movable core according to claim 3, characterized in that, The lower side of the first support (11) and the second support (12) is commonly provided with a base (14), and the stator core (131) is located on the base (14).

6. The adjustable air-gap arc suppression coil with a movable core according to claim 5, characterized in that, The base (14) is provided with a stepping motor (15), and one end of the rotor core (132) is connected with the output end of the stepping motor (15).

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