Electric reactor with heat dissipation channel
By introducing an insulating film and support strips into the reactor to form a heat dissipation channel, the problem of poor heat dissipation effect between the coil and the iron core is solved, and a better heat dissipation effect is achieved.
Patent Information
- Application Number
- CN202422435069.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-09
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2034-10-09
AI Technical Summary
The heat dissipation effect between the existing reactor coil and the iron core is poor, resulting in heat accumulation affecting the normal operation of the reactor.
Insulating film and support strips are introduced into the reactor to form a heat dissipation channel between the coil and the iron core to ensure that heat can be discharged effectively.
It improves the heat dissipation effect of the reactor, prevents heat from accumulating around the iron core, and ensures the normal operation of the reactor.
Smart Images
Figure CN223245366U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of reactors, and in particular to a reactor with a heat dissipation channel. Background Art
[0002] In industrial production, the quality of power directly impacts the quality of industrial products. In power systems, generators, power transformers, and electrical equipment all generate harmonics. Harmonic sources adversely impact power systems, causing voltage and current instability, equipment failure, and other issues. To improve power quality and ensure proper operation, LC passive filtering circuits are typically installed before distribution transformers. Reactors with a reactance ratio corresponding to the harmonic order of the grid are selected, and then voltage-level compensation capacitors are used to mitigate harmonics and provide reactive power compensation.
[0003] In the LC passive filter circuit of the power system, the filter reactor is commonly known as the series reactor. The existing reactor, such as the patent with application number CN2020211311927, includes an upper iron yoke, a lower iron yoke, a coil and an iron core. The coil is wound on the iron core, and the upper and lower iron yokes are installed on the upper and lower sides of the iron core. The inner side of the existing coil is in direct contact with the iron core. The space between the coil and the iron core is small, and heat is easily accumulated between the coil and the iron core, causing the temperature to rise, affecting the heat dissipation of the reactor. Utility Model Content
[0004] In order to solve the shortcoming of poor heat dissipation effect between the coil and the iron core of the existing reactor, the utility model provides a reactor, wherein a heat dissipation channel is formed between the coil and the iron core to improve the heat dissipation effect.
[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:
[0006] A reactor with a heat dissipation channel includes an upper iron yoke, a lower iron yoke and multiple iron cores, which are vertically installed between the upper iron yoke and the lower iron yoke. The reactor also includes an insulating film, a coil and multiple vertically placed support bars. The insulating film is wrapped around the outside of the iron core, the coil is tightly wound around the outside of the insulating film, and the multiple support bars are circumferentially supported between the iron core and the insulating film to form a heat dissipation channel between the insulating film and the iron core.
[0007] Through the above arrangement, the support bar is supported between the insulating film and the iron core, so that a heat dissipation channel is formed around the iron core to prevent heat accumulation around the iron core. Gaps are provided on the upper and lower sides of the coil to connect the upper and lower ends of the heat dissipation channel with the atmosphere, thereby facilitating the discharge of heat in the heat dissipation channel to the atmosphere and improving the heat dissipation effect of the reactor.
[0008] Furthermore, the cross section of the iron core is rectangular, and the cross section of the support bar is L-shaped, forming a right-angle groove. The support bars are arranged on the four corners of the iron core, and the corners of the iron core are embedded in the right-angle grooves of the support bars.
[0009] Through the above arrangement, the support bars support the iron core, so that heat dissipation channels are formed on the front, back, left and right sides of the iron core.
[0010] Furthermore, the iron core is composed of multiple vertically extending first silicon steel sheets stacked front to back, and supported by an upper iron yoke and a lower iron yoke; the inductor also includes a pull plate that passes through the heat dissipation channel and is attached to the front and back sides of the iron core, and the upper and lower ends of the pull plate are respectively locked on the upper iron yoke and the lower iron yoke.
[0011] Through the above arrangement, the upper iron yoke and the lower iron yoke are installed at the upper and lower ends of the iron core through the pull plates.
[0012] Furthermore, a first rivet hole is provided on the first silicon steel sheet, and a plurality of first silicon steel sheets are riveted together through the first rivet hole.
[0013] Furthermore, a gap plate is provided between the upper iron yoke and the iron core, and between the lower iron yoke and the iron core, and a first waist-shaped hole is provided on the gap plate.
[0014] Through the above arrangement, the gap plate separates the upper iron yoke from the iron core, and separates the lower iron yoke from the iron core, so that gaps are formed on the upper and lower sides of the coil.
[0015] Furthermore, a circular mounting hole is provided at the lower end of the pull plate, and a second waist-shaped hole extending vertically is provided at the upper end of the pull plate. A lower fastener passes through the mounting hole to lock the lower end of the pull plate to the front and rear sides of the lower iron yoke, and an upper fastener passes through the second waist-shaped hole to lock the upper end of the pull plate to the front and rear sides of the upper iron yoke.
[0016] Through the above arrangement, even when the gaps are different, the upper end of the pull plate can be locked on the upper iron yoke.
[0017] Furthermore, the coil is vertically wound with insulating tape on the front, back, left and right sides of the iron core.
[0018] Through the above arrangement, the stability of the coil is increased to prevent the coil from shifting up and down.
[0019] Furthermore, support plates are vertically inserted into the heat dissipation channels on the front and rear sides of the iron core, the outer sides of the support plates are in contact with the insulating tape, and the inner sides of the support plates are in contact with the pull plates.
[0020] The above arrangement can prevent the first silicon steel sheet and the pulling plate from bending and deforming due to heat.
[0021] Furthermore, the reactor also includes an upper clamp arranged on the front and rear sides of the upper iron yoke, and a lower clamp arranged on the front and rear sides of the lower iron yoke. The end of the upper clamp is provided with a lifting groove with a notch facing downward. The upper fastener passes through the upper clamp to lock the upper clamp on the upper iron yoke, and the lower fastener passes through the lower clamp to lock the lower clamp on the lower iron yoke.
[0022] The above arrangement makes it convenient to hoist the reactor through the hoisting slot.
[0023] Furthermore, the structures of the upper iron yoke and the lower iron yoke are basically the same, and both are composed of multiple vertically placed second silicon steel sheets stacked front to back. The second silicon steel sheets are provided with connecting holes, and the upper fasteners extend into the connecting holes of the upper iron yoke to lock it on the upper iron yoke, and the lower fasteners extend into the connecting holes of the lower iron yoke to lock it on the lower iron yoke. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 Schematic diagram of a reactor according to an embodiment.
[0025] Figure 2 1 is an exploded view of the reactor of the embodiment.
[0026] Figure 3 1 is a top view of the core and coil of the embodiment.
[0027] Figure 4 Schematic diagram of the iron core of the embodiment.
[0028] Figure 5 Schematic diagram of the upper iron yoke of the embodiment. DETAILED DESCRIPTION
[0029] The technical solution of the present invention will be further specifically described below with reference to embodiments and in conjunction with the accompanying drawings.
[0030] like Figures 1 to 5 As shown, a reactor with a heat dissipation channel includes an upper iron yoke 3, a lower iron yoke 4 and multiple iron cores 5. The multiple iron cores 5 are vertically installed between the upper iron yoke 3 and the lower iron yoke 4. The reactor also includes an insulating film 6, a coil 27 and multiple vertically placed support bars 7. The insulating film 6 is wrapped around the outside of the iron core 5, and the coil is tightly wound around the outside of the insulating film 6. The multiple support bars 7 are circumferentially supported between the iron core 5 and the insulating film 6 to form a heat dissipation channel 8 between the insulating film 6 and the iron core 5.
[0031] Through the above-mentioned arrangement, the support bar 7 is supported between the insulating film 6 and the iron core 5, so that a heat dissipation channel 8 is formed around the iron core 5 to prevent heat accumulation around the iron core 5. Gaps are provided on the upper and lower sides of the coil to connect the upper and lower ends of the heat dissipation channel 8 with the atmosphere, thereby facilitating the discharge of heat in the heat dissipation channel 8 to the atmosphere and improving the heat dissipation effect of the reactor.
[0032] The upper iron yoke 3 and the lower iron yoke 4 of the present application are basically rectangular structures extending left and right along the inductor, and three iron cores 5 are provided, which are basically rectangular structures extending up and down; the upper side of the insulating film 6 is basically flush with the upper side of the iron core 5, and the lower side is basically flush with the lower side of the iron core 5, which is used to isolate the coil from the iron core 5; the coil is tightly wound around the outside of the insulating film 6 to press the support bar 7 around the iron core 5, so that heat dissipation channels 8 are provided around the iron core 5 to ensure good heat dissipation; the upper side of the coil extends outward from the upper side of the insulating film 6 to form an upper terminal 9, and the lower side of the coil extends outward from the lower side of the insulating film 6 to form an almond-shaped lower terminal 10, and both the upper terminal 9 and the lower terminal 10 are equipped with terminal noses 11 for convenient wiring.
[0033] As an implementation method, the cross-section of the iron core 5 is rectangular, and the cross-section of the support bar 7 is L-shaped, forming a right-angle groove. The support bar 7 is arranged on the four corners of the iron core 5, and the corners of the iron core 5 are embedded in the right-angle groove of the support bar 7.
[0034] Through the above arrangement, the support bars 7 support the iron core 5 , so that heat dissipation channels 8 are formed on the front, back, left and right sides of the iron core 5 .
[0035] The upper end of the support bar 7 of the present application is flush with the upper side of the iron core 5, and the lower end of the support bar 7 is flush with the lower side of the iron core 5. The outer side of the support bar 7 is provided with a rounded corner to increase the bending radius of the insulating film 6 and the coil at the support bar 7, thereby reducing the concentrated stress of the insulating film 6 and the coil.
[0036] As an implementation method, the iron core 5 is composed of multiple vertically extending first silicon steel sheets stacked front to back, and supported by the upper iron yoke 3 and the lower iron yoke 4; the inductor also includes a pull plate 12 that passes through the heat dissipation channel 8 and is attached to the front and back sides of the iron core 5, and the upper and lower ends of the pull plate 12 are respectively locked on the upper iron yoke 3 and the lower iron yoke 4.
[0037] Through the above arrangement, the upper iron yoke 3 and the lower iron yoke 4 are installed at the upper and lower ends of the iron core 5 through the pull plates 12 .
[0038] In this application, the first silicon steel sheet is a rectangular plate placed vertically. The upper iron yoke 3 and the lower iron yoke 4 prevent the iron core 5 from moving up and down. A pull plate 12 is provided on the front and back sides of each iron core 5. The upper and lower ends of the pull plate 12 are connected to the upper iron yoke 3 and the lower iron yoke 4. The pull plate 12 clamps the front and back sides of the iron core 5 to prevent the iron core 5 from moving back and forth.
[0039] As an implementation manner, a first rivet hole 13 is provided on the first silicon steel sheet, and a plurality of first silicon steel sheets are riveted together through the first rivet hole 13 .
[0040] As an implementation method, a gap plate 14 is provided between the upper iron yoke 3 and the iron core 5 , and between the lower iron yoke 4 and the iron core 5 , and a first waist-shaped hole 15 is provided on the gap plate 14 .
[0041] Through the above arrangement, the gap plate 14 separates the upper iron yoke 3 from the iron core 5, and separates the lower iron yoke 4 from the iron core 5, so that gaps are formed on the upper and lower sides of the coil.
[0042] The gap plate 14 of the present application is made of silicon steel sheet and has good magnetic conductivity. A plurality of first waist-shaped holes 15 are provided at both ends and the middle of the gap plate 14 to reduce the contact area between the gap plate 14 and the iron core 5, so that glue is not easily overflowed from the upper and lower ends of the iron core 5.
[0043] As an implementation method, a circular mounting hole ( Figure 2 A second waist-shaped hole 17 extending vertically is provided at the upper end of the pull plate 12, and a lower fastener 19 passes through the mounting hole to lock the lower end of the pull plate 12 to the front and rear sides of the lower iron yoke 4, and an upper fastener 18 passes through the second waist-shaped hole 17 to lock the upper end of the pull plate 12 to the front and rear sides of the upper iron yoke 3.
[0044] Through the above arrangement, even when the gaps are different, the upper end of the pull plate 12 can be locked on the upper iron yoke 3.
[0045] The lower fastener 19 and the upper fastener 18 of the present application can both be set as bolts. The lower fastener 19 passes through the mounting hole and is threadedly connected to the lower iron yoke 4. The lower fastener 19 is tightened to lock the lower end of the pull plate 12 on the lower iron yoke 4. The thickness of the gap plate 14 is different, and the height of the upper iron yoke 3 is different, that is, the gap between the iron core 5 and the upper iron yoke 3, and the gap between the iron core 5 and the lower iron yoke 4 are different. The upper fastener 18 can be tightened on the upper iron yoke 3 through the second waist-shaped hole 17 to lock the upper end of the pull plate 12 on the upper iron yoke 3.
[0046] As an implementation method, the coil is vertically wound with insulating tape 20 on the front, back, left and right sides of the iron core 5.
[0047] Through the above arrangement, the stability of the coil is increased to prevent the coil from shifting up and down.
[0048] As an implementation method, support plates 21 are vertically inserted into the heat dissipation channels 8 on the front and rear sides of the iron core 5 , with the outer sides of the support plates 21 abutting against the insulating tape 20 and the inner sides of the support plates 21 abutting against the pull plates 12 .
[0049] The above arrangement can prevent the first silicon steel sheet and the pulling plate 12 from bending and deforming due to heat.
[0050] The support plate 21 of the present application is squeezed by the coil and the insulating film 6 and is tightly attached to the front and rear sides of the pulling plate 12. After the pulling plate 12 and the first silicon steel sheet of the iron core 5 are squeezed by the support plate 21, they are not easily bent or deformed.
[0051] As an implementation method, the reactor also includes an upper clamp 22 arranged on the front and rear sides of the upper iron yoke 3, and a lower clamp 23 arranged on the front and rear sides of the lower iron yoke 4. The end of the upper clamp 22 is provided with a lifting groove 24 with a notch facing downward. The upper fastener 18 passes through the upper clamp 22 to lock the upper clamp 22 on the upper iron yoke 3, and the lower fastener 19 passes through the lower clamp 23 to lock the lower clamp 23 on the lower iron yoke 4.
[0052] The above arrangement facilitates the hoisting of the reactor through the hoisting slot 24 .
[0053] The upper iron yoke 3 of the present application is provided with an upper clamp 22 on both the front and rear sides. One end of the front upper clamp 22 is provided with the above-mentioned lifting groove 24, and the other end of the rear upper clamp 22 is provided with a lifting groove 24, which is convenient for lifting equipment, such as a hand hoist, to hook the end of the upper clamp 22 to lift the inductor; as an implementation method, a thermal protector is provided between the iron core 5 and the insulating film 6, and a terminal is installed on the outside of one of the upper clamps 22. The thermal protector is connected to the terminal through a wire to detect the temperature of the iron core 5.
[0054] As an implementation method, the upper iron yoke 3 and the lower iron yoke 4 have basically the same structure, and are both composed of multiple vertically placed second silicon steel sheets stacked front to back. The second silicon steel sheets are provided with connecting holes 25. The upper fastener 18 extends into the connecting hole 25 of the upper iron yoke 3 to be locked on the upper iron yoke 3, and the lower fastener 19 extends into the connecting hole 25 of the lower iron yoke 4 to be locked on the lower iron yoke 4.
[0055] A second rivet hole 26 is provided on the second silicon steel sheet of the present application, and the second silicon steel sheets are riveted together through the second rivet hole 26. The upper fastener and the lower fastener can be screws, which pass through the connecting holes of the upper iron yoke and the lower iron yoke and cooperate with the nut thread. The nut is tightened to lock the upper splint and the lower splint on the corresponding upper iron yoke and the lower iron yoke.
[0056] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the claims attached to this utility model.
Claims
1. A reactor with a heat dissipation channel, characterized in that: It includes an upper iron yoke, a lower iron yoke and multiple iron cores, and the multiple iron cores are vertically installed between the upper iron yoke and the lower iron yoke. The inductor also includes an insulating film, a coil and multiple vertically placed support bars. The insulating film is wrapped around the outside of the iron core, and the coil is tightly wound around the outside of the insulating film. The multiple support bars are circumferentially supported between the iron core and the insulating film to form a heat dissipation channel between the insulating film and the iron core. There are gaps between the uppermost side of the coil and the upper iron yoke, and between the lowermost side of the coil and the lower iron yoke.
2. The reactor with a heat dissipation channel according to claim 1, characterized in that: The cross section of the iron core is rectangular, the cross section of the support bar is L-shaped, forming a right-angle groove, the support bar is arranged on the four corners of the iron core, and the corners of the iron core are embedded in the right-angle grooves of the support bar.
3. The reactor with a heat dissipation channel according to claim 1, characterized in that: The iron core is composed of multiple vertically extending first silicon steel sheets stacked front to back, and supported by the upper iron yoke and the lower iron yoke; the inductor also includes a pull plate passing through the heat dissipation channel and attached to the front and back sides of the iron core, and the upper and lower ends of the pull plate are respectively locked on the upper iron yoke and the lower iron yoke.
4. The reactor with a heat dissipation channel according to claim 3, characterized in that: The first silicon steel sheet is provided with a first rivet hole, and a plurality of the first silicon steel sheets are riveted together through the first rivet hole.
5. The reactor with a heat dissipation channel according to claim 3, characterized in that: A gap plate is provided between the upper iron yoke and the iron core, and between the lower iron yoke and the iron core, and a first waist-shaped hole is provided on the gap plate.
6. The reactor with a heat dissipation channel according to claim 3, characterized in that: A circular mounting hole is provided at the lower end of the pull plate, and a second waist-shaped hole extending vertically is provided at the upper end of the pull plate. A lower fastener passes through the mounting hole to lock the lower end of the pull plate to the front and rear sides of the lower iron yoke, and an upper fastener passes through the second waist-shaped hole to lock the upper end of the pull plate to the front and rear sides of the upper iron yoke.
7. The reactor with a heat dissipation channel according to claim 1, characterized in that: The coil is vertically wound with insulating tapes on the front, back, left and right sides of the iron core.
8. The reactor with a heat dissipation channel according to claim 3, characterized in that: Support plates are vertically inserted into the heat dissipation channels on the front and rear sides of the iron core, the outer sides of the support plates abut against the insulating tape, and the inner sides of the support plates abut against the pull plates.
9. The reactor with a heat dissipation channel according to claim 6, characterized in that: The reactor also includes an upper clamp arranged on the front and rear sides of the upper iron yoke, and a lower clamp arranged on the front and rear sides of the lower iron yoke. The end of the upper clamp is provided with a lifting groove with the notch facing downward. The upper fastener passes through the upper clamp to lock the upper clamp on the upper iron yoke, and the lower fastener passes through the lower clamp to lock the lower clamp on the lower iron yoke.
10. The reactor with a heat dissipation channel according to claim 9, characterized in that: The upper iron yoke and the lower iron yoke have basically the same structure, and are both composed of multiple vertically placed second silicon steel sheets stacked front to back. The second silicon steel sheets are provided with connecting holes. The upper fasteners extend into the connecting holes of the upper iron yoke to be locked on the upper iron yoke, and the lower fasteners extend into the connecting holes of the lower iron yoke to be locked on the lower iron yoke.