A filter reactor core adjustment structure

Abstract

The present invention discloses a filter reactor core adjustment structure, specifically relating to the technical field of filter reactors, comprising a base plate, with downwardly bent support ears connected to both ends of the base plate, a plurality of rubber sleeves installed on the surface of the base plate, a top cover installed on the top of the plurality of rubber sleeves, a winding assembly located inside the rubber sleeve installed at the bottom of the top cover, a spacing between the bottom end of the winding assembly and the surface of the base plate, a connecting pipe provided at the bottom of the inner cavity of the plurality of rubber sleeves, the height of the connecting pipe being the same as the spacing between the bottom end of the winding assembly and the surface of the base plate. The present invention wraps an insulating heat-conducting sleeve around the outside of the iron core to conduct the heat of the iron core to the outside for passive heat dissipation, and provides a plurality of hole and slot structures on the outside of the insulating heat-conducting sleeve, and uses the method of actively controlling the airflow to force the heat to be dissipated from the inside of the rubber sleeve to the outside, thereby achieving active heat dissipation and effectively achieving the temperature regulation effect of the reactor core.

Description

Technical Field

[0001] The present invention relates to the technical field of filter reactors, and more particularly to a filter reactor core adjustment structure. Background Art

[0002] Power grids contain numerous harmonic sources, such as rectifiers, converters, and frequency converters. The high-order harmonics they generate can seriously endanger the safe operation of the main transformer and other electrical equipment in the system. Filter reactors are widely used in high- and low-voltage filter cabinets. Connected in series with filter capacitors and tuned to a specific resonant frequency, they absorb harmonic currents of corresponding frequencies in the power grid. Reactance ratios range from 1%, 5.67%, 6%, 12%, and 13%, respectively, and can eliminate harmonics of the third, fifth, seventh, eleventh, and thirteenth orders, and higher. When connected in series with capacitors, filter reactors not only effectively absorb power grid harmonics but also improve the system's power factor, significantly contributing to its safe operation.

[0003] Filter reactors have two types of losses: core (cell) loss and coil loss. When the reactor's input harmonics are high, core (cell) loss accounts for a significant proportion. When reactor size limitations prevent the installation of extensive cooling ducts, heat dissipation becomes a crucial consideration in reactor design. Therefore, the filter reactor's core structure must be designed and adjusted to suit the operating scenario. Summary of the Invention

[0004] To achieve the above-mentioned object, the present invention provides the following technical solution: a filter reactor core adjustment structure, comprising a base plate, with downwardly bent support ears connected to both ends of the base plate, a plurality of rubber sleeves mounted on the surface of the base plate, a top cover mounted on the top ends of the plurality of rubber sleeves, a winding assembly located inside the rubber sleeves mounted on the bottom of the top cover, a gap being left between the bottom end of the winding assembly and the surface of the base plate, a connecting tube being provided at the bottom of the inner cavity of the plurality of rubber sleeves, the height of the connecting tube being the same as the gap between the bottom end of the winding assembly and the surface of the base plate, the top end of the connecting tube being connected to the bottom end of the winding assembly;

[0005] Multiple through holes are opened on the base plate, and the multiple through holes connect the bottom of the base plate with the inside of the rubber sleeve on the surface of the base plate. Multiple drainage components are installed at the bottom of the base plate. The number of drainage components, through holes, rubber sleeves and winding components is the same, and the winding components, through holes and drainage components are arranged in sequence from top to bottom.

[0006] In a preferred embodiment, the winding assembly includes an iron core located in a rubber sleeve, an insulating thermally conductive sleeve sleeved on the outer wall of the iron core, and a winding coil wound around the outside of the insulating thermally conductive sleeve. The bottom end of the iron core is connected to a connecting tube, and the inner diameter of the connecting tube is the same as the diameter of the iron core.

[0007] In a preferred embodiment, the bottom end of the connecting pipe is fixed on the base plate, the through hole is located directly below the connecting pipe, and a plurality of first air holes are evenly opened on the connecting pipe.

[0008] In a preferred embodiment, a ventilation groove is passed through the middle of the iron core, and the ventilation groove extends from the bottom end of the iron core to the top end of the iron core.

[0009] In a preferred embodiment, the top cover includes a top plate fixed to the top of the rubber sleeve and side plates fixed at the edges of both sides of the long axis of the top plate. The top plate is provided with upper holes with the same number as the iron cores, and the upper holes are located directly above the air vents.

[0010] In a preferred embodiment, a plurality of second air holes are provided on the top plate between the iron core and the rubber sleeve, a cover plate fixed to the top end of the side plate is provided above the top plate, and a plurality of third air holes are provided on the side plate.

[0011] In a preferred embodiment, the number of the drainage components and the through holes is consistent, and the drainage component includes a drainage fan fixed on the base plate, the drainage fan is located directly below the through hole, and the thickness of the drainage fan is less than the height of the support ear.

[0012] In a preferred embodiment, fixing plates are connected to both sides of the plurality of rubber sleeves, and the fixing plates are fixed on the base plate.

[0013] The technical effects and advantages of the present invention are as follows:

[0014] The present invention wraps an insulating thermally conductive sleeve around the outside of the iron core to conduct the heat of the iron core to the outside for passive heat dissipation, and arranges multiple hole and slot structures on the outside of the insulating thermally conductive sleeve. The heat is forced to be dissipated from the inside of the rubber sleeve to the outside by actively controlling the airflow, thereby realizing active heat dissipation and effectively achieving the temperature regulation effect of the reactor core. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0016] Figure 2 This is a schematic diagram of the structure after the cover plate of the present invention is removed.

[0017] Figure 3 It is a schematic diagram of the internal structure of the rubber sleeve of the present invention.

[0018] The figures are marked as follows: 1 base plate, 2 support ear, 3 rubber sleeve, 4 connecting pipe, 5 through hole, 6 iron core, 7 winding coil, 8 insulating thermal sleeve, 9 first air vent, 10 air vent groove, 11 top plate, 12 side plate, 13 upper hole, 14 second air vent, 15 third air vent, 16 drainage fan, 17 fixing plate, 18 cover plate. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] like Figure 1-3 The illustrated structure shows a filter reactor core adjustment structure, comprising a base plate 1, with downwardly bent support ears 2 connected to both ends of the base plate 1. A plurality of rubber sleeves 3 are mounted on the surface of the base plate 1, a top cover is mounted on the top ends of the plurality of rubber sleeves 3, a winding assembly located within the rubber sleeves 3 is mounted on the bottom of the top cover, a gap is left between the bottom end of the winding assembly and the surface of the base plate 1, a connecting tube 4 is provided at the bottom of the inner cavity of the plurality of rubber sleeves 3, the height of the connecting tube 4 being the same as the gap between the bottom end of the winding assembly and the surface of the base plate 1, and the top end of the connecting tube 4 is connected to the bottom end of the winding assembly;

[0021] When in use, the filter reactor is mounted on the working equipment through the support ears 2, and the rubber sleeve 3 provides protection for the winding components inside the filter reactor.

[0022] Wherein, fixing plates 17 are connected to both sides of the plurality of rubber sleeves 3 , and the fixing plates 17 are fixed on the base plate 1 . The fixing plates 17 fix and support the plurality of rubber sleeves 3 to prevent them from shaking.

[0023] A plurality of through holes 5 are provided on the base plate 1, and the plurality of through holes 5 connect the bottom of the base plate 1 with the interior of the rubber sleeve 3 on the surface of the base plate 1. A plurality of drainage components are installed on the bottom of the base plate 1. The number of drainage components, through holes 5, rubber sleeves 3 and winding components is the same, and the winding components, through holes 5 and drainage components are arranged in sequence from top to bottom;

[0024] Furthermore, the number of the drainage components and the through holes 5 is the same, and the drainage component includes a drainage fan 16 fixed to the base plate 1, and the drainage fan 16 is located directly below the through holes 5, and the thickness of the drainage fan 16 is less than the height of the support ears 2;

[0025] On the basis of the above, the drainage component is a drainage fan 16, which drives the air below the base plate 1 to flow upward from the through hole 5 to the inside of the rubber sleeve 3 and into the connecting pipe 4 at the bottom of the rubber sleeve 3 when it is working.

[0026] Furthermore, the winding assembly includes an iron core 6 located in a rubber sleeve 3, an insulating heat-conducting sleeve 8 sleeved on the outer wall of the iron core 6, and a winding coil 7 wound around the outside of the insulating heat-conducting sleeve 8. The bottom end of the iron core 6 is connected to a connecting tube 4, and the inner diameter of the connecting tube 4 is the same as the diameter of the iron core 6.

[0027] Among them, the insulating thermally conductive sleeve 8 is made of thermally conductive silicone, and the connecting tube 4 and the base plate 1 are both made of aluminum alloy. The insulating thermally conductive sleeve 8 provides insulation and protection, and at the same time conducts the heat generated during the operation of the iron core 6. The bottom end of the insulating thermally conductive sleeve 8 is in contact with the connecting tube 4, and the heat is transferred to the connecting tube 4, and then conducted to the bottom base plate 1 through the connecting tube 4 to increase the heat dissipation area and improve the heat dissipation efficiency.

[0028] Furthermore, the bottom end of the connecting pipe 4 is fixed on the base plate 1, the through hole 5 is located directly below the connecting pipe 4, and a plurality of first air holes 9 are evenly opened on the connecting pipe 4;

[0029] On the basis of the above, the air entering the connecting tube 4 from the through hole 5 will flow from the first air vent 9 to the outside of the connecting tube 4, that is, into the space between the connecting tube 4 and the rubber sleeve 3, and then continue to flow upward, guiding the heat of the iron core 6 upward;

[0030] Among them, in addition to connecting the insulating heat-conducting sleeve 8 and the iron core 6 to the base plate 1 for heat conduction, the connecting pipe 4 and the first air vent 9 can also discharge the air entering the connecting pipe 4 from the through hole 5 into the rubber sleeve 3, and blow on the connecting pipe 4 and the iron core 6 during the air flow process, thereby accelerating the rate of temperature drop of the two.

[0031] Furthermore, a ventilation groove 10 is passed through the middle of the iron core 6, and the ventilation groove 10 extends from the bottom end of the iron core 6 to the top end of the iron core 6;

[0032] On the basis of the above, part of the air entering the connecting pipe 4 enters the rubber sleeve 3 through the first air hole 9 , and the other part flows directly upward from the air groove 10 to cool the iron core 6 .

[0033] The top cover comprises a top plate 11 fixed to the top of the rubber sleeve 3 and side plates 12 fixed to the edges of both sides of the long axis of the top plate 11. The top plate 11 is provided with the same number of upper holes 13 as the number of the iron cores 6. The upper holes 13 are located directly above the vent grooves 10.

[0034] A plurality of second air holes 14 are provided on the top plate 11 between the iron core 6 and the rubber sleeve 3 , a cover plate 18 fixed to the top end of the side plate 12 is provided above the top plate 11 , and a plurality of third air holes 15 are provided on the side plate 12 .

[0035] On the basis of the above, during operation, when the temperature of the iron core 6 is within the normal range, the drainage fan 16 stops working, and the heat is dissipated by passive heat dissipation between the insulating heat-conducting sleeve 8, the connecting pipe 4, the base plate 1 and the multiple air holes;

[0036] When the temperature of the iron core 6 is too high and needs to be adjusted, the ventilation fan 16 is used to actively suck the external air from the through hole 5 into the connecting pipe 4. Part of the heat enters the rubber sleeve 3 from the first air hole 9 along with the gas, and is discharged to the top from the second air hole 14 at the top. The other part of the heat flows directly upward from the air groove 10 along with the gas, and is discharged to the top from the upper hole 13. Then the heat is discharged outward from the ports at both ends of the cover plate 18 and the top plate 11 and the third air hole 15 along with the air.

[0037] The cover plate 18 and the side plate 12 provide shielding for the multiple air holes and the upper hole 13 on the top plate 11 to prevent them from being blocked by dust and debris.

[0038] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may refer to mechanical or electrical connections, internal communication between two components, or direct connection. "Up," "down," "left," "right," etc. are only used to indicate relative positional relationships. When the absolute positions of the objects being described change, the relative positional relationships may also change.

[0039] Secondly: The drawings of the embodiments disclosed in the present invention only involve structures related to the embodiments disclosed in the present invention. Other structures may refer to conventional designs. The same embodiment and different embodiments of the present invention may be combined with each other without conflict.

[0040] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A filter reactor core adjustment structure, characterized in that: The invention comprises a base plate, wherein both ends of the base plate are connected to downwardly bent support ears, a plurality of rubber sleeves are installed on the surface of the base plate, a top cover is installed on the top of the plurality of rubber sleeves, a winding assembly located inside the rubber sleeve is installed on the bottom of the top cover, a gap is left between the bottom end of the winding assembly and the surface of the base plate, a connecting pipe is provided at the bottom of the inner cavity of the plurality of rubber sleeves, the height of the connecting pipe is the same as the gap between the bottom end of the winding assembly and the surface of the base plate, and the top end of the connecting pipe is connected to the bottom end of the winding assembly; A plurality of through holes are opened on the base plate, and the plurality of through holes connect the bottom of the base plate with the inside of the rubber sleeve on the surface of the base plate. A plurality of drainage components are installed on the bottom of the base plate. The number of drainage components, through holes, rubber sleeves and winding components is the same, and the winding components, through holes and drainage components are arranged in sequence from top to bottom; The winding assembly includes an iron core located in a rubber sleeve, an insulating heat-conducting sleeve sleeved on the outer wall of the iron core, and a winding coil wound around the outside of the insulating heat-conducting sleeve. The bottom end of the iron core is connected to a connecting pipe, and the inner diameter of the connecting pipe is the same as the diameter of the iron core. A ventilation groove is provided through the middle of the iron core, and the ventilation groove extends from the bottom end of the iron core to the top end of the iron core; The bottom end of the connecting pipe is fixed to the base plate, the through hole is located directly below the connecting pipe, and a plurality of first air holes are evenly opened on the connecting pipe; The top cover comprises a top plate fixed to the top of the rubber sleeve and side plates fixed to the edges of both sides of the long axis of the top plate. The top plate is provided with the same number of upper holes as the number of the iron cores, and the upper holes are located directly above the venting grooves. A plurality of second air holes are provided on the top plate between the iron core and the rubber sleeve, a cover plate fixed on the top end of the side plate is provided above the top plate, and a plurality of third air holes are provided on the side plate.

2. The filter reactor core adjustment structure according to claim 1, characterized in that: The number of the drainage components is consistent with that of the through holes. The drainage component includes a drainage fan fixed on the base plate. The drainage fan is located directly below the through holes, and the thickness of the drainage fan is less than the height of the supporting ears.

3. The filter reactor core adjustment structure according to claim 1, characterized in that: A fixing plate is connected to both sides of the plurality of rubber sleeves, and the fixing plate is fixed on the base plate.

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