Miniature energy-taking transformer and transformer application system
By designing the fixed bracket and enclosed shell structure of the micro-energy-taking transformer, combined with the application of fixed value capacitors, the problem of existing energy-taking transformers being easily damaged in thunderstorms is solved, achieving longer service life and installation cost savings.
Patent Information
- Application Number
- CN202420074371.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-11
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-01-11
AI Technical Summary
Existing energy-taking transformers are susceptible to damage caused by lightning impact during thunderstorms, resulting in a shorter service life.
A miniature energy-taking transformer is designed, adopting a C-type iron core, primary winding and secondary winding. Through a combined structure of a fixed bracket and an encapsulated shell, the fixed bracket includes a connecting frame and a connecting rod, and the encapsulated shell is made of deformable insulating material. , a fixed value capacitor is connected between the primary winding and the high voltage end, and is used to fix voltage division and direct-through communication to block lightning impact.
It effectively reduces the damage to the transformer by lightning impact, extends the service life, and saves installation brackets and costs by directly installing them inside the circuit breaker.
Smart Images
Figure CN222168072U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of power transmission and distribution facilities of electric power systems, and in particular to a micro energy harvesting transformer and a transformer application system. Background Art
[0002] With the continuous development of electronic products, the application of electronic transformers is becoming more and more extensive, and the market competition is becoming more and more fierce. In order to meet the needs of the market and customers, the design method of transformers is also constantly being optimized and improved.
[0003] The existing energy harvesting transformers are installed independently outdoors. During thunderstorms, they will be directly subjected to lightning strikes and are more likely to be damaged. Utility Model Content
[0004] In order to increase the service life of an energy extraction transformer, the present application provides a micro energy extraction transformer and a transformer application system.
[0005] The present application provides a micro energy-taking transformer, which adopts the following technical solution:
[0006] A miniature energy-taking transformer comprises a C-shaped iron core, a primary winding, a secondary winding, a fixing bracket and an encapsulating shell;
[0007] Two C-shaped iron cores are arranged opposite to each other, and the primary winding and the secondary winding are respectively wound on the same end of the two C-shaped iron cores; the fixed bracket includes a connecting frame clamped on one side of each C-shaped iron core, and a connecting rod connecting the two connecting frames;
[0008] The encapsulating shell is disposed outside the primary winding and the secondary winding.
[0009] By adopting the above technical solution, the primary winding and the secondary winding are respectively wound on the C-shaped iron core, and the C-shaped iron core is clamped between the two connecting frames, and the connecting rod connects the two connecting frames, and then the fixing bracket stably fixes the C-shaped iron core and the winding. The encapsulating shell is wrapped around the primary winding and the secondary winding. After being sealed with glue, the primary winding and the secondary winding are protected. The micro energy transformer is installed inside the circuit breaker through the connecting frame, which greatly reduces the possibility of removing lightning strikes and prolongs the service life. The micro energy transformer is small in size and is directly installed inside the circuit breaker, saving the special mounting bracket on the outdoor pole and the cost of independently installing the transformer on site.
[0010] Furthermore, the connecting frame includes a base plate, a baffle is fixed on the base plate, two connecting parts are fixed on one side of the baffle, the C-shaped iron core is installed on the base plate and is located between the two connecting parts, and the connecting rod is connected between the two connecting parts located on the same side of the C-shaped iron core.
[0011] By adopting the above technical solution, each C-type iron core is clamped on a connecting frame by a corresponding limit, and the two connecting frames are connected to each other, thereby fixing the two C-type iron cores to improve the stability of the micro energy transformer.
[0012] Furthermore, a second through hole is respectively provided at both ends of the bottom plate.
[0013] By adopting the above technical solution, the connecting frame can be easily installed inside the circuit breaker through the through hole.
[0014] Furthermore, the connecting member includes a first connecting plate and a second connecting plate which are perpendicular to each other, the first connecting plate is fixed to the baffle and is perpendicular to the baffle, the spacing between the two first connecting plates on the same connecting frame is equal to the thickness of the C-shaped iron core, and a first through hole is provided on the second connecting plate, and the connecting rod is fixed through the first through hole.
[0015] By adopting the above technical solution, the two first connecting plates on the through-connecting piece are parallel, so the C-shaped iron core can be clamped exactly between the two connecting pieces, thereby improving the stability of the C-shaped iron core.
[0016] Furthermore, the connecting rod comprises a screw rod passing through the first through hole, and a nut is threadedly fixed on the end of the screw rod.
[0017] By adopting the above technical solution, the connecting rod can adjust the distance between the two connecting frames by tightening the nut, thereby clamping the C-shaped iron core, which is convenient for assembly and adjustment.
[0018] Furthermore, potting glue is poured in the encapsulating shell, and the encapsulating shell is a deformable insulating material. The encapsulating shell includes a first shell and a second shell, and the first shell and the second shell both include side panels, and end plates are provided at both ends of the side panels. The bottom edges of the side panels of the first shell and the second shell are hinged, and rectangular notches are provided on the end plates, and the C-shaped iron core is clamped in the notch.
[0019] By adopting the above technical solution, the first shell and the second shell can be deformed, and then can be rotated open and inserted into the center of the C-shaped iron core, and then after closing, the primary winding and the secondary winding are wrapped inside, and clamped on the outer wall of the C-shaped iron core, thereby improving the sealing of the encapsulating shell, and then improving the protection of the primary winding and the secondary winding. The potting glue improves the sealing and insulation, and connects the first shell and the second shell.
[0020] Furthermore, a groove is provided on the outer side of an edge of the first shell close to the second shell, and a flange is provided on the outer side of an edge of the second shell close to the first shell, and the flange is plugged into the groove.
[0021] By adopting the above technical solution, when the first shell and the second shell are merged toward each other, the flange and the groove are clamped tightly, thereby improving the sealing performance of the first shell and the second shell.
[0022] Furthermore, a support plate is provided on the inner wall of the end plate of the first shell or the second shell, and the encapsulating shell also includes a wire management plate, and two pairs of limit plates are provided on the bottom surface of the wire management plate. The support plate is correspondingly inserted between each pair of limit plates, and at least two wire management holes are provided on the wire management plate.
[0023] By adopting the above technical solution, the support plate is connected between the two limit plates, so that the wire management plate is installed in the encapsulating shell, and the wires of the one-side winding and the two-side winding are respectively received in the wire management holes, thereby improving the convenience of assembly and the windings are orderly organized.
[0024] Furthermore, the wire management hole is communicated with an edge of the wire management plate.
[0025] By adopting the above technical solution, the winding wire can be inserted into the wire management hole through the edge of the wire management plate, which is highly convenient to use.
[0026] In a second aspect, the present application provides a transformer application system, comprising a miniature energy extraction transformer as described in any one of the first aspects, and also comprising a fixed value capacitor connected between the primary winding and the high voltage end.
[0027] By adopting the above technical solution, the fixed-value capacitor plays a role in fixing the voltage division and isolating DC and passing AC, effectively blocking lightning strikes, preventing the secondary short circuit from causing rapid heating and damaging the transformer, and improving the service life of the transformer.
[0028] In summary, the present application includes at least one of the following beneficial technical effects:
[0029] 1. The micro energy transformer is installed inside the circuit breaker through a connecting frame, which greatly reduces the possibility of removing lightning strikes and prolongs its service life;
[0030] 2. The miniature energy transformer is small in size and can be directly installed inside the circuit breaker, saving the special mounting bracket on the outdoor pole and the cost of installing the transformer independently on site;
[0031] 3. The fixed value capacitor plays a role in fixing the voltage division and isolating DC and passing AC, effectively blocking lightning strikes, preventing the secondary short circuit from causing rapid heating and damaging the transformer, and thus increasing the service life of the transformer. BRIEF DESCRIPTION OF THE DRAWINGS
[0032] Figure 1 It is a schematic diagram of the structure of the micro energy-harvesting transformer in the embodiment of the present application.
[0033] Figure 2It is a schematic diagram of the structure of the wire management board in the embodiment of the present application.
[0034] Figure 3 It is a structural schematic diagram that reflects the fixing method of the cable management plate in the embodiment of the present application.
[0035] Figure 4 It is a schematic diagram of a transformer application system in an embodiment of the present application.
[0036] Explanation of the accompanying drawings: 1. Fixed bracket; 11. Connecting frame; 111. Bottom plate; 112. Baffle; 113. Connecting piece; 1131. First connecting plate; 1132. Second connecting plate; 1133. First through hole; 114. Second through hole; 12. Connecting rod; 121. Screw; 122. Nut; 2. C-type core; 3. Primary winding; 4. Secondary winding; 5. Encapsulating shell; 51. First shell; 52. Second shell; 53. Side plate; 54. End plate; 55. Notch; 56. Groove; 57. Flange; 58. Support plate; 59. Wire management plate; 591. Limiting plate; 592. Wire management hole; 6. Fixed value capacitor. DETAILED DESCRIPTION
[0037] The following is combined with Figure 1-4 This application is described in further detail.
[0038] The present application embodiment discloses a micro energy-harvesting transformer. Figure 1 The micro energy transformer includes a fixing bracket 1, a C-shaped iron core 2, a primary winding 3, a secondary winding 4 and an encapsulating shell 5.
[0039] The micro energy transformer includes two C-shaped cores 2, and the two C-shaped cores 2 are arranged opposite to each other. The primary winding 3 and the secondary winding 4 are different in thickness, and the primary winding 3 is wound on one end of one of the C-shaped cores 2, and the secondary winding 4 is wound on one end of the other C-shaped core 2, and the ends of the C-shaped cores 2 wound with the windings are located on the same side.
[0040] Among them, the number of turns of the primary winding 3 and the secondary winding 4 is set according to actual needs. By designing the primary and secondary windings with appropriate numbers of turns, when the primary winding 3 of the micro energy transformer reaches the rated voltage, the primary inductance will not change significantly, thereby effectively suppressing the increase of the primary voltage of the transformer and achieving the effect of stable secondary output.
[0041] The fixing bracket 1 includes two connecting frames 11 arranged opposite to each other, and a connecting rod 12 connecting the two connecting frames 11. The connecting frame 11 includes a bottom plate 111, and a baffle 112 is arranged on the bottom plate 111 and is perpendicular to the bottom plate 111. The baffle 112 is located at one edge of the bottom plate 111. The height of the baffle 112 is between 0.5 and 1 times the height of the C-shaped iron core 2.
[0042] Two connecting members 113 are arranged symmetrically about the vertical center line of the baffle 112 on one side of the top of the baffle 112. The connecting member 113 is a bent L-shaped plate, and the connecting member 113 includes a first connecting plate 1131 and a second connecting plate 1132 which are perpendicular to each other. The first connecting plate 1131 is perpendicular to the baffle 112, and the second connecting plate 1132 is located on the outer side of the baffle 112, and a first through hole 1133 is opened on the second connecting plate 1132. The spacing between the two first connecting plates 1131 on the same connecting frame 11 is equal to the thickness of the C-shaped iron core 2.
[0043] The bottom of each C-shaped core 2 is located on the bottom plate 111, and one end where the arc surface is located is correspondingly clamped into a connecting frame 11 and located between two connecting members 113. The connecting rod 12 includes a screw rod 121 and a nut 122 threadedly connected to the screw rod 121. The screw rod 121 passes through the first through hole 1133 on the two second connecting plates 1132 located on the same side of the C-shaped core 2, and the nut 122 is screwed on the end of the screw rod 121. By tightening the nut 122, the connecting rod 12 fixes the two connecting frames 11 together, and the two C-shaped cores 2 are stably fixed on the fixing bracket 1.
[0044] Furthermore, a second through hole 114 is respectively provided at both ends of the bottom plate 111, so that the micro energy transformer can be easily installed inside the circuit breaker.
[0045] Reference Figure 1 and Figure 2 The encapsulating shell 5 is arranged outside the primary winding 3 and the secondary winding 4, and is made of a deformable insulating material, such as plastic or rubber, to provide protection and insulation, and has a certain degree of deformation capability, so as to be easily installed on the C-shaped core 2. The encapsulating shell 5 includes a first shell 51 and a second shell 52, and the first shell 51 and the second shell 52 both include an arc-shaped side plate 53 and an end plate 54 connected to both ends of the side plate 53, and a rectangular notch 55 is arranged on the side of the end plate 54 away from the side plate 53, and the bottoms of the first shell 51 and the second shell 52 are hinged, and when the first shell 51 and the second shell 52 are fastened toward each other, the notch 55 formed by the butt joint of the notch 55 has the same cross-sectional shape as one end of the C-shaped core 2. After the primary winding 3 and the secondary winding 4 are wound, the first shell 51 is passed through the central gap of the C-type iron core 2, and then the first shell 51 and the second shell 52 are fastened. The primary winding 3 and the secondary winding 4 are located in the encapsulating shell 5, the wire ends of the windings extend out of the encapsulating shell 5, and the C-type iron core 2 is clamped in the rectangular notch 55.
[0046] Furthermore, a groove 56 is provided on the outer side of the edge adjacent to the first shell 51 and the second shell 52 , and a flange 57 is provided on the outer side of the edge adjacent to the second shell 52 and the first shell 51 . The flange 57 is plugged into the groove 56 to improve the sealing performance of the connection between the first shell 51 and the second shell 52 .
[0047] Reference Figure 2 and Figure 3 A support plate 58 is also provided on the inner wall of the end plate 54 of the first shell 51 or the second shell 52, and the encapsulating shell 5 also includes a wire-management plate 59. Two limit plates 591 are fixed to the two ends of the bottom surface of the wire-management plate 59, and the limit plates 591 are perpendicular to the wire-management plate 59. The wire-management plate 59 is placed above the support plate 58, and the support plate 58 is located between the two limit plates 591, so that the wire-management plate 59 is stably clamped in the first shell 51 or the second shell 52. At least two wire-management holes 592 are provided on the wire-management plate 59, and the wires of the primary winding 3 and the secondary winding 4 can be placed in a corresponding wire-management hole 592 respectively. The wire-management hole 592 is connected to the edge of the wire-management plate 59, and the winding wires can be inserted into the wire-management hole 592 from the edge of the wire-management plate 59 for easy arrangement.
[0048] After the primary winding 3 and the secondary winding 4 are arranged, the encapsulating shell 5 is filled with potting glue to protect the primary winding 3 and the secondary winding 4 and fix the first shell 51 and the second shell 52 .
[0049] The implementation principle of a micro energy-taking transformer in the embodiment of the present application is as follows: the primary winding 3 and the secondary winding 4 are respectively wound on the C-type core 2, and the C-type core 2 is clamped between two connecting frames 11 arranged opposite to each other, and the connecting rod 12 connects the two connecting frames 11, and then the fixing bracket 1 stably fixes the C-type core 2 and the winding. The encapsulating shell 5 is wrapped around the primary winding 3 and the secondary winding 4, and after being sealed by glue, the primary winding 3 and the secondary winding 4 are protected. The connecting frame 11 can be fixed in the circuit breaker for use, which greatly reduces the possibility of removing lightning strikes and prolongs the service life.
[0050] The micro energy transformer uses the magnetic saturation performance of the core to control the voltage fluctuation of the product to achieve the functional effect of stable output. It is small in size and light in weight, about 1.2Kg. It is directly installed inside the circuit breaker, saving the special mounting bracket on the outdoor pole and the cost of independently installing the transformer on site.
[0051] The present application also discloses a transformer application system, referring to Figure 4 In the figure, AB is the primary winding 3, ab is the secondary winding 4, and the transformer application system includes a micro energy-taking transformer and a fixed-value capacitor 6 connected between the primary winding 3 and the high-voltage end.
[0052] The fixed value capacitor 6 plays a role in fixing the voltage division and isolating direct current and passing alternating current, thereby effectively blocking lightning impulses and preventing the secondary short circuit from causing rapid heating and damaging the transformer.
[0053] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A miniature energy-taking transformer, characterized in that: It comprises a C-shaped iron core (2), a primary winding (3), a secondary winding (4), a fixing bracket (1) and an encapsulating shell (5); Two C-shaped iron cores (2) are arranged opposite to each other, and the primary winding (3) and the secondary winding (4) are respectively wound on the same end of the two C-shaped iron cores (2); The fixed bracket (1) comprises a connecting bracket (11) respectively clamped on one side of each C-shaped iron core (2), and a connecting rod (12) connecting the two connecting brackets (11); The encapsulating shell (5) is arranged outside the primary winding (3) and the secondary winding (4).
2. A miniature energy-harvesting transformer according to claim 1, characterized in that: The connecting frame (11) comprises a bottom plate (111), a baffle (112) is fixed on the bottom plate (111), two connecting members (113) are fixed on one side of the baffle (112), the C-shaped iron core (2) is mounted on the bottom plate (111) and is located between the two connecting members (113), and the connecting rod (12) is connected between the two connecting members (113) located on the same side of the C-shaped iron core (2).
3. A miniature energy-harvesting transformer according to claim 2, characterized in that: Two ends of the bottom plate (111) are each provided with a second through hole (114).
4. A miniature energy-harvesting transformer according to claim 2, characterized in that: The connecting member (113) comprises a first connecting plate (1131) and a second connecting plate (1132) which are perpendicular to each other; the first connecting plate (1131) is fixed to the baffle (112) and is perpendicular to the baffle (112); the distance between two first connecting plates (1131) on the same connecting frame (11) is equal to the thickness of the C-shaped iron core (2); the second connecting plate (1132) is provided with a first through hole (1133); the connecting rod (12) passes through the first through hole (1133) and is fixed.
5. A miniature energy-harvesting transformer according to claim 4, characterized in that: The connecting rod (12) comprises a screw rod (121) passing through the first through hole (1133), and a nut (122) is threadedly fixed at the end of the screw rod (121).
6. The miniature energy-harvesting transformer according to claim 1, characterized in that: A potting compound is poured into the encapsulating shell (5). The encapsulating shell (5) is made of a deformable insulating material. The encapsulating shell (5) comprises a first shell (51) and a second shell (52). The first shell (51) and the second shell (52) both comprise side panels (53). End panels (54) are provided at both ends of the side panels (53). The bottom edges of the side panels (53) of the first shell (51) and the second shell (52) are hinged to each other. A rectangular notch (55) is provided on the end panels (54). The C-shaped iron core (2) is clamped in the notch (55).
7. A miniature energy-harvesting transformer according to claim 6, characterized in that: A groove (56) is provided on the outer side of an edge of the first shell (51) close to the second shell (52), and a flange (57) is provided on the outer side of an edge of the second shell (52) close to the first shell (51), and the flange (57) is plugged into the groove (56).
8. The miniature energy-harvesting transformer according to claim 6, characterized in that: A support plate (58) is provided on the inner wall of the end plate (54) of the first shell (51) or the second shell (52), and the encapsulating shell (5) also includes a wire management plate (59), and two pairs of limit plates (591) are provided on the bottom surface of the wire management plate (59), and the support plate (58) is correspondingly inserted between each pair of limit plates (591), and at least two wire management holes (592) are provided on the wire management plate (59).
9. The miniature energy-harvesting transformer according to claim 8, characterized in that: The wire management hole (592) is in communication with the edge of the wire management plate (59).
10. A transformer application system, characterized in that: It comprises a miniature energy extraction transformer as claimed in any one of claims 1 to 9, and further comprises a fixed value capacitor (6) connected between the primary winding (3) and the high voltage end.