Electric reactor with inductance coil insulating part for relieving influence of voltage sag

Abstract

The utility model provides an electric reactor with an inductance coil insulation part capable of relieving voltage sag influence, which belongs to the technical field of voltage sag, and comprises an input end, an electric reactor body and an output end, the electric reactor comprises an iron core and a winding, at least one section of insulation sleeve is arranged on the coil on the outermost layer of the winding, and the coil on the outermost layer of the winding is provided with at least one section of insulation sleeve. The insulation sleeve comprises an outer insulation sleeve located on the outer side of the coil and an inner insulation sleeve located on the inner side of the coil, the outer insulation sleeve is used for wrapping the outer side of the electric reactor, the inner insulation sleeve is in a strip-shaped plate shape, one face of the inner insulation sleeve is a flat plate and is connected with the outer insulation sleeve in a buckled mode, and the surface of the other face of the inner insulation sleeve is provided with at least one protrusion. The stress applying device is used for applying stress to an internal coil to prevent coil displacement caused by vibration; the outer insulation sleeve is detachably connected with the inner insulation sleeve; the utility model can solve the problem of displacement of the reactor coil.

Description

Technical Field

[0001] The utility model belongs to the technical field of voltage sag, and in particular relates to a reactor with an inductor coil insulation component capable of alleviating the influence of voltage sag. Background Art

[0002] A reactor is an electrical component used to introduce inductance or capacitance into a circuit to change the characteristics of the current. It can adjust the impedance of the circuit and affect the flow of current to achieve the goals of various circuit designs and applications.

[0003] Voltage sag, also known as voltage drop, is defined as a rapid drop in the effective value of the supply voltage to 90% to 10% of the rated value, lasting for 0.5 cycles to 1 minute. Under the same duration, the effective value of the voltage rises rapidly to 110% to 180% of the rated value, which is defined as a voltage swell. If the duration exceeds 1 minute, it is considered to be low voltage or high voltage. A short power outage is defined as a complete loss of power supply, lasting at least 1.5 cycles. The problem of voltage sag has become the focus of international attention on power quality issues because its frequency of occurrence is much greater than that of short power outages. Even a fault hundreds of kilometers away may cause a drop in the local voltage amplitude.

[0004] In combating voltage sag, the reactor is an important component of the power system. By using the reactor together with the DVR equipment, the voltage change can be reduced and the impact of large voltage fluctuations on the equipment in the circuit can be avoided.

[0005] These reactors may face some problems during operation. One of them is the inside of the reactor. Since the coils are wound in many layers, the amplitudes and forces inside and outside are different. The outermost winding is subject to greater forces and is prone to winding coil displacement. The displacement of the winding coil may affect the inductance value of the reactor, and affect the performance and service life of the reactor. Utility Model Content

[0006] In view of this, the utility model provides a reactor with an inductor coil insulation component for alleviating the influence of voltage sag, which can solve the problem of reactor coil displacement.

[0007] The utility model is achieved in this way:

[0008] The utility model provides a reactor with an inductive coil insulating component for alleviating the influence of voltage sag, comprising: an input end, a reactor body, and an output end, wherein the reactor comprises an iron core and a winding, and an outermost coil on the winding is provided with at least one section of a force-relieving insulating sleeve along the axial surface of the winding, the insulating sleeve comprises an outer insulating sleeve located on the outer side of the coil and an inner insulating sleeve located on the inner side of the coil, the outer insulating sleeve is used to wrap the outer side of the reactor, the inner insulating sleeve is strip-shaped, and has at least one protrusion on the surface, which is used to apply stress to the internal coil to prevent the displacement of the coil caused by vibration; the outer insulating sleeve is detachably connected to the inner insulating sleeve.

[0009] The protrusion on the surface of the inner insulating sleeve is hemispherical and is used to increase the pressure at the protruding position of the inner insulating sleeve.

[0010] Preferably, the snap connection between the outer insulating sleeve and the inner insulating sleeve comprises:

[0011] The side of the outer insulating sleeve that fits the inner insulating sleeve has plug connectors at the upper and lower ends, and the corresponding position of the inner insulating sleeve has a matching plug slot to achieve a snap-on structure.

[0012] Preferably, the end faces of the two longer sides of the outer insulating sleeve (11) have a plurality of the plug connectors (21) on one side and a plurality of the plug slots (22) on the other side, so as to achieve splicing with another outer insulating sleeve (11).

[0013] Preferably, the plug connector is cylindrical, the side wall of the cylinder is provided with a circumferential protrusion, and the side cross-section of the protrusion is arc-shaped.

[0014] Preferably, a ring cap is provided on the top of the plug connector, and the ring cap is conical and fixedly connected to the cylinder.

[0015] Preferably, the ring caps of each plug connector are stacked in plurality.

[0016] Preferably, the radius of the plug groove is between the radius of the bottom of the plug connector and the maximum radius of the ring cap.

[0017] Compared with the prior art, the beneficial effect of the inductor provided by the utility model, which has an inductor coil insulating component for alleviating the impact of voltage sag, is that by arranging an insulating sleeve, it can be achieved that when the voltage is temporarily reduced, the inductor can effectively relieve the force due to the difference in internal and external amplitudes caused by poor power quality during operation, thereby reducing the replacement and maintenance of the winding insulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments of the utility model will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 A schematic diagram of an outer insulating sleeve of a reactor having an inductor coil insulating component for alleviating the influence of voltage sag;

[0020] Figure 2 A cross-sectional view of an insulating sleeve of a reactor having an inductor coil insulating component for alleviating the effects of voltage sag;

[0021] Figure 3 A schematic diagram of an inner insulating sleeve of a reactor having an inductor coil insulating component for alleviating the influence of voltage sag;

[0022] Figure 4 A schematic diagram of a plug connector of a first embodiment of a reactor having an inductor coil insulation component for alleviating the influence of voltage sag;

[0023] Figure 5 A schematic cross-sectional view of a plug connector of a first embodiment of a reactor having an inductor coil insulation component for alleviating the influence of voltage sag;

[0024] Figure 6 A schematic diagram of a plug connector of a second embodiment of a reactor having an inductor coil insulation component for alleviating the influence of voltage sag;

[0025] Figure 7 A schematic cross-sectional view of a plug connector of a second embodiment of a reactor having an inductor coil insulating component for alleviating the influence of voltage sag;

[0026] Figure 8 A schematic diagram of the electrical connection of a reactor having an inductor coil insulation component for alleviating the effect of voltage sag;

[0027] Fig. 9 A schematic diagram of a reactor having an inductor coil insulation component for alleviating the effects of voltage sag;

[0028] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0029] 11. Outer insulating sleeve; 12. Inner insulating sleeve; 21. Plug connector; 211. Ring cap; 22. Plug slot. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the implementation mode of the present invention clearer, the technical solution in the implementation mode of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the implementation mode of the present invention.

[0031] like Figure 1 , Figure 2 , Figure 3 , Figure 8 , Fig. 9 As shown, it is a first embodiment of a reactor with an inductive coil insulating component for alleviating the influence of voltage sag provided by the utility model. In this embodiment, it includes: an input end of the reactor, a reactor body, and an output end, wherein the reactor includes an iron core and a winding, and on the outermost coil of the winding, along the axial surface of the winding, at least one section of a force-relieving insulating sleeve is provided, and the insulating sleeve 1 includes an outer insulating sleeve 11 located on the outer side of the coil and an inner insulating sleeve 12 located on the inner side of the coil, the outer insulating sleeve is used to wrap the outer side of the reactor, and the inner insulating sleeve 12 is strip-shaped, and has at least one protrusion on the surface, which is used to apply stress to the internal coil to prevent the coil displacement caused by vibration; the outer insulating sleeve 11 and the inner insulating sleeve 12 are detachably connected.

[0032] By setting up the insulating sleeve, it can be achieved that when the voltage is temporarily reduced, the reactor is working, resulting in different internal and external amplitudes due to poor power quality, which can effectively relieve the force and reduce the replacement and maintenance of the winding insulation.

[0033] Among them, in the above technical solution, the protrusion on the surface of the inner insulating sleeve 12 is hemispherical, which is used to increase the pressure at the protruding position of the inner insulating sleeve 12.

[0034] Among them, in the above technical solution, the snap connection between the outer insulating sleeve 11 and the inner insulating sleeve 12 includes:

[0035] The side of the outer insulating sleeve 11 that fits the inner insulating sleeve 12 has plug connectors 21 at the upper and lower ends, and the corresponding position of the inner insulating sleeve 12 has a mating plug slot 22 to achieve a snap-on structure.

[0036] By adopting such a structure, the inner and outer insulating sleeve components can be fixedly connected, the wrapping force is strong, and the movement of the inner insulating sleeve 12 is restricted, thereby achieving better stability.

[0037] Among them, in the above technical solution, the end faces of the two longer sides of the outer insulating sleeve 11 have a plurality of the plug connectors 21 on one side and a plurality of the plug slots 22 on the other side to achieve splicing with another outer insulating sleeve 11.

[0038] By adopting this structure, the extruded inner insulating sleeve can be strengthened at one position on the winding of the reactor to achieve a better local fixing effect and reduce the coil displacement caused by the vibration of the winding.

[0039] Among them, in the above technical solution, the plug connector 21 is cylindrical, and the side wall of the cylinder is provided with a circumferential protrusion, and the side cross-section of the protrusion is arc-shaped to avoid deformation of the outer insulating sleeve.

[0040] like Figure 6 , Figure 7 As shown, it is a schematic diagram of a second embodiment of a reactor with an inductor coil insulation component for alleviating the influence of voltage sag provided by the utility model, wherein in the above technical scheme, a ring cap 211 is provided on the top of the plug connector 21, and the ring cap 211 is conical and fixedly connected to the cylinder.

[0041] In the above technical solution, the ring caps 211 of each plug connector 21 are stacked in a plurality, so as to achieve a tight fit with the inner insulating sleeve.

[0042] Among them, in the above technical solution, the radius of the plug groove 22 is between the bottom radius of the plug connector 21 and the maximum radius of the ring cap 211.

[0043] Specifically, the principle of the utility model is: when in use, one or more outer insulating sleeves 11 are combined together through the plug-in structure 2, the inner insulating sleeve 12 is located at the end of the outer insulating sleeve 11, and the outer insulating sleeve 11 is sleeved on the outside of the reactor coil. At this time, the inner insulating sleeve 12 is perpendicular to the outer insulating sleeve 11, and the protrusion of the inner insulating sleeve 12 is embedded in the coil. When the coil vibrates, the protrusion of the inner insulating sleeve 12 is just stuck inside the coil, preventing the displacement of the coil. In the embodiment, the recommended width of the insulating sleeve is 1 to 2 cm, the thickness of the protrusion is 0.5 to 1 cm, and the distribution of the protrusion is one in the middle, and / or one at each end close to the plug-in slot.

Claims

1. A reactor having an inductor coil insulation component for alleviating the effect of voltage sag, characterized in that: The reactor includes: An input end, a reactor body, and an output end, wherein the reactor comprises an iron core and a winding, and the outermost coil of the winding is provided with at least one section of a force-relieving insulating sleeve along the axial surface of the winding, the insulating sleeve (1) comprises an outer insulating sleeve (11) located outside the coil and an inner insulating sleeve (12) located inside the coil, the outer insulating sleeve is used to wrap the outer side of the reactor, the inner insulating sleeve (12) is in the shape of a strip plate, one side of which is a flat plate and is snap-connected to the outer insulating sleeve (11), and the other side of which has at least one protrusion, which is used to apply stress to the internal coil to prevent the displacement of the coil caused by vibration; the outer insulating sleeve (11) and the inner insulating sleeve (12) are detachably connected.

2. A reactor having an inductor coil insulation component for alleviating the influence of voltage sag according to claim 1, characterized in that: The protrusion on the surface of the inner insulating sleeve (12) is hemispherical and is used to increase the pressure at the protruding position of the inner insulating sleeve (12).

3. A reactor having an inductor coil insulation component for alleviating the influence of voltage sag according to claim 2, characterized in that: The snap connection between the outer insulating sleeve (11) and the inner insulating sleeve (12) comprises: The side of the outer insulating sleeve (11) that fits the inner insulating sleeve (12) has plug connectors (21) at the upper and lower ends, and the corresponding position of the inner insulating sleeve (12) has a mating plug slot (22) to achieve a snap-on structure.

4. The reactor having an inductor coil insulation component for alleviating the influence of voltage sag according to claim 3, characterized in that: Also includes: The end faces of the two longer sides of the outer insulating sleeve (11) are provided with a plurality of plug connectors (21) on one side and a plurality of plug slots (22) on the other side, so as to achieve splicing with another outer insulating sleeve (11).

5. The reactor having an inductor coil insulation component for alleviating the influence of voltage sag according to claim 4, characterized in that: The plug connector (21) is cylindrical, the side wall of the cylinder is provided with a circumferential protrusion, and the side cross-section of the protrusion is arc-shaped.

6. The reactor having an inductor coil insulation component for alleviating the influence of voltage sag according to claim 5, characterized in that: A ring cap (211) is provided on the top of the plug connector (21); the ring cap (211) is conical and fixedly connected to the cylinder.

7. The reactor having an inductor coil insulation component for alleviating the influence of voltage sag according to claim 6, characterized in that: Each of the plug connectors (21) has a plurality of ring caps (211) stacked one on top of the other.

8. The reactor having an inductor coil insulation component for alleviating the influence of voltage sag according to claim 7, characterized in that: The radius of the plug-in groove (22) is between the bottom radius of the plug connector (21) and the maximum radius of the ring cap (211).

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