Electronic transformer with good lightning protection effect

Abstract

The utility model discloses an electronic transformer with a good lightning protection effect. The electronic transformer comprises an iron core, a protective shell and a lightning protection insulation mechanism, a primary coil is wound in the middle of the iron core, the outer cambered surface of the primary coil is wrapped with a first insulating tape, the outer cambered surface of the first insulating tape is wound with a secondary coil, the outer cambered surface of the secondary coil is wrapped with a second insulating tape, a fixed seat is arranged at the lower end of the iron core, and a rectifier is arranged on the surface of the fixed seat; and the protective shell covers the outside of the iron core, the fixed seat is fixedly connected with the protective shell through a bolt I, and wiring terminals are arranged on the left side surface and the right side surface of the protective shell. According to the electronic transformer with the good lightning protection effect, more comprehensive insulation protection is provided for electric appliance parts of the electronic transformer, the occurrence of insulation weak points of the electronic transformer is reduced, and the service life of the electronic transformer is prolonged. The lightning protection effect of the electronic transformer is improved, the probability that electric appliances of the electronic transformer are damaged in an outdoor lightning environment is reduced, and the service life of the electronic transformer is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic transformers, in particular to an electronic transformer with good lightning protection effect. Background Technique

[0002] An electronic transformer is a power transmission and distribution device that combines a power electronic converter (rectifier, inverter) and a high-frequency transformer to realize basic functions such as electrical quantity conversion, energy transfer, and system isolation of traditional power transformers. Since the power devices applied to the power system are lower than those of the power transmission system in terms of both capacity and withstand voltage level, it is expected that the future application of electronic transformers in the power system should first be realized in the distribution field; in the prior art, in order to ensure that the electronic transformer is not affected by the external environment, a protective housing is mostly provided outside the electronic transformer, and an insulating component is also installed between the protective housing and the electrical components of the electronic transformer to provide insulation protection for the electronic transformer. However, because the protective housing needs to provide space for the installation of electrical components, after many electronic transformers are installed, there are likely to be large gaps on the surface of the insulating component, resulting in weak insulation points. When the electronic transformer works in a lightning environment, the probability that the electrical components inside the electronic transformer are easily damaged is relatively high. For this reason, we propose an electronic transformer with good lightning protection effect. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to overcome the existing defects, provide an electronic transformer with good lightning protection effect, provide more comprehensive insulation protection for the electrical components of the electronic transformer, make the fitting between the insulating components of the electronic transformer closer, reduce the occurrence of weak insulation points of the electronic transformer, and improve the lightning protection effect of the electronic transformer, and can effectively solve the problems in the background technique.

[0004] To achieve the above object, the utility model provides the following technical solution: an electronic transformer with good lightning protection effect, including an iron core, a protective housing, and a lightning protection and insulation mechanism;

[0005] Iron core: A primary coil is wound around the middle thereof, a first insulating tape is wrapped around the outer arc surface of the primary coil, a secondary coil is wound around the outer arc surface of the first insulating tape, a second insulating tape is wrapped around the outer arc surface of the secondary coil, a fixing seat is provided at the lower end of the iron core, and a rectifier is provided on the surface of the fixing seat;

[0006] Protective housing: It covers the outside of the iron core, the fixing seat is fixedly connected to the protective housing through bolt 1, wiring terminals are provided on the left and right sides of the protective housing, the input end of the primary coil is electrically connected to the output end of the wiring terminal on the right through the rectifier on the right, and the input end of the secondary coil is electrically connected to the output end of the wiring terminal on the left through the rectifier on the left;

[0007] Lightning protection insulation mechanism: It is set inside the protective shell to provide more comprehensive insulation protection for the electrical components of the electronic transformer, make the insulation components of the electronic transformer fit more closely, reduce the occurrence of weak points in the insulation of the electronic transformer, improve the lightning protection effect of the electronic transformer, reduce the probability of damage to the electronic transformer in an outdoor lightning environment, and increase the service life of the electronic transformer.

[0008] Furthermore, the protective shell includes a lower shell, an upper shell and an L-shaped plate, there are two L-shaped plates and they are symmetrically distributed on the left and right sides, the two L-shaped plates have opposite outer sides of the vertical plates provided with wiring terminals, a lower shell is provided between the two L-shaped plates, the upper shell is placed on the upper end of the lower shell, the fixing seat is fixedly connected to the bottom wall of the lower shell by bolts, and the iron core is located inside the whole composed of the lower shell and the upper shell, so as to reduce the influence of the external environment on the electrical components.

[0009] Furthermore, the protective shell also includes a connecting plate, which is respectively arranged at the left and right ends of the upper shell, and the connecting plates are fixedly connected to the L-shaped plate by bolts 2, so as to facilitate the connection between the upper shell and the L-shaped plate.

[0010] Furthermore, the lightning protection insulation mechanism includes an insulating base plate, which is arranged on the bottom wall of the lower shell, and the surface of the insulating base plate is respectively provided with a clearance hole that is installed in cooperation with a bolt, so as to provide insulation between the fixing seat and the lower shell.

[0011] Furthermore, the lightning protection insulation mechanism also includes a U-shaped insulation plate and an insulation top cover, the U-shaped insulation plate is arranged on the upper surface of the insulation bottom plate, the insulation top cover is arranged on the top wall of the upper shell, and the iron core and the rectifier are both located inside the U-shaped insulation plate, providing more comprehensive insulation protection for electrical components.

[0012] Furthermore, the lightning protection insulation mechanism also includes a wire threading groove, which is respectively arranged at the left and right ends of the circular insulation plate and the insulation top cover to provide space for laying the connection lines.

[0013] Furthermore, mounting holes are respectively provided on the upper surfaces of the transverse plates of the L-shaped plates to facilitate installation and fixation of the overall device.

[0014] Compared with the prior art, the utility model has the following beneficial effects: the electronic transformer with good lightning protection effect has the following advantages:

[0015] After the overall device is installed, through the cooperation of the lower housing and the upper housing, protection is provided for the electrical components to avoid the influence of the external environment on the electrical components. At the same time, an insulating bottom plate provides insulation between the fixed seat and the lower housing. The iron core and the rectifier are covered by the return-shaped insulating plate and the insulating top cover. The insulating top cover is pressed by the upper housing and fits tightly with the return-shaped insulating plate, reducing the gap between the return-shaped insulating plate and the insulating top cover. During use, the external alternating current is rectified into direct current by the rectifier on the right and then transmitted to the primary coil. Through the principle of electromagnetic induction, the secondary coil outputs the required voltage, and then after secondary rectification by the rectifier on the left, it is supplied for external electrical appliances. It provides more comprehensive insulation protection for the electrical components of the electronic transformer, makes the fitting between the insulating components of the electronic transformer closer, reduces the occurrence of weak insulation points of the electronic transformer, improves the lightning protection effect of the electronic transformer, reduces the probability of electrical damage of the electronic transformer in the outdoor lightning environment, and improves the service life of the electronic transformer. Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of the present utility model;

[0017] Figure 2 It is a schematic structural diagram of the explosion of the protective housing of the present utility model;

[0018] Figure 3 It is a schematic structural diagram of the front view section of the overall device of the present utility model.

[0019] In the figure: 1 iron core, 2 primary coil, 3 first insulating tape, 4 secondary coil, 5 second insulating tape, 6 fixed seat, 7 protective housing, 71 lower housing, 72 upper housing, 73 connecting plate, 74 L-shaped plate, 8 lightning protection and insulation mechanism, 81 return-shaped insulating plate, 82 wire slot, 83 insulating top cover, 84 insulating bottom plate, 9 rectifier, 10 mounting hole, 11 terminal. Detailed Embodiment

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0021] Please refer to Figures 1-3 , this embodiment provides a technical solution: an electronic transformer with good lightning protection effect, including an iron core 1, a protective housing 7 and a lightning protection and insulation mechanism 8;

[0022] Iron core 1: A primary coil 2 is wound around its middle part. The outer arc surface of the primary coil 2 is wrapped with a first insulating tape 3. The outer arc surface of the first insulating tape 3 is wound with a secondary coil 4. The outer arc surface of the secondary coil 4 is wrapped with a second insulating tape 5. The first insulating tape 3 is used to insulate between the primary coil 2 and the secondary coil 4, and the second insulating tape 5 is used to insulate between the secondary coil 4 and the outside. A fixing base 6 is provided at the lower end of the iron core 1 to facilitate the fixing of the position of the voltage conversion component. A rectifier 9 is provided on the surface of the fixing base 6. The external alternating current is rectified into direct current by the rectifier 9 on the right and then transmitted to the primary coil 2. Through the principle of electromagnetic induction, the secondary coil 4 outputs the required voltage, and then it is secondarily rectified by the rectifier 9 on the left for external electrical appliances to use;

[0023] Protective housing 7: It covers the outside of the iron core 1. The fixing base 6 is fixedly connected to the protective housing 7 through bolt 1. Wiring terminals 11 are provided on the left and right sides of the protective housing 7. The input end of the primary coil 2 is electrically connected to the output end of the wiring terminal 11 on the right through the rectifier 9 on the right. The input end of the secondary coil 4 is electrically connected to the output end of the wiring terminal 11 on the left through the rectifier 9 on the left, which facilitates the connection of the overall device to the external circuit. The protective housing 7 includes a lower housing 71, an upper housing 72, and L-shaped plates 74. There are two L-shaped plates 74 and they are symmetrically distributed left and right. Wiring terminals 11 are provided on the outer sides of the vertical plates of the two L-shaped plates 74 facing away from each other. A lower housing 71 is provided between the two L-shaped plates 74. The upper housing 72 is placed on the upper end of the lower housing 71. The fixing base 6 is fixedly connected to the bottom wall of the lower housing 71 through bolt 1. The iron core 1 is located inside the whole formed by the lower housing 71 and the upper housing 72. The protective housing 7 further includes a connecting plate 73. The connecting plates 73 are respectively arranged at the left and right ends of the upper housing 72. The connecting plates 73 are respectively fixedly connected to the L-shaped plates 74 through bolt 2, which facilitates the connection between the upper housing 72 and the L-shaped plates 74. Under the connection action of the L-shaped plates 74, the positions of the lower housing 71 and the upper housing 72 are fixed. Through the cooperation of the lower housing 71 and the upper housing 72, protection is provided for the electrical components to avoid the influence of the external environment on the electrical components. Mounting holes 10 are respectively provided on the upper surfaces of the horizontal plates of the L-shaped plates 74 to facilitate the fixing of the position of the overall device;

[0024] Lightning protection insulation mechanism 8: arranged inside the protective shell 7, the lightning protection insulation mechanism 8 includes an insulating bottom plate 84, the insulating bottom plate 84 is arranged on the bottom wall of the lower shell 71, and the surface of the insulating bottom plate 84 is respectively provided with a clearance hole for mounting with a bolt, the lightning protection insulation mechanism 8 also includes a circular insulating plate 81 and an insulating top cover 83, the circular insulating plate 81 is arranged on the upper surface of the insulating bottom plate 84, and the insulating top cover 83 is arranged on the top wall of the upper shell 72. The iron core 1 and the rectifier 9 are both located inside the circular insulating plate 81, and the insulating bottom plate 84 is used to provide insulation between the fixing seat 6 and the lower shell 71. The insulating plate 81 and the insulating top cover 83 cover the iron core 1 and the rectifier 9. The insulating top cover 83 is pressed by the upper shell 72 and fits tightly with the circular insulating plate 81, reducing the gap between the circular insulating plate 81 and the insulating top cover 83, providing more comprehensive insulation protection for electrical components, reducing the occurrence of weak insulation points, improving the lightning protection effect of the overall device, and reducing the probability of damage to the overall device in an outdoor lightning environment. The lightning protection insulation mechanism 8 also includes a wire threading groove 82, which is respectively arranged at the left and right ends of the circular insulating plate 81 and the insulating top cover 83 to provide a clearance space for the laying of connecting lines.

[0025] The working principle of an electronic transformer with good lightning protection effect provided by the utility model is as follows: during installation, the lower shell 71, the upper shell 72 and the L-shaped plate 74 are fixed by bolts. After installation, the lower shell 71 and the upper shell 72 cooperate to provide protection for the electrical components to avoid the influence of the external environment on the electrical components. At the same time, the insulating bottom plate 84 is used to provide insulation between the fixing seat 6 and the lower shell 71. The iron core 1 and the rectifier 9 are covered by the circular insulating plate 81 and the insulating top cover 83. The insulating top cover 83 is pressed by the upper shell 72 and is in contact with the circular insulating plate 81. Tightly fit, reduce the gap between the circular insulating plate 81 and the insulating top cover 83, provide more comprehensive insulation protection for electrical components, reduce the occurrence of weak insulation points, improve the lightning protection effect of the overall device, and reduce the probability of damage to the overall device in an outdoor lightning environment. During use, the overall device is connected to the circuit through the terminal 11, and the external alternating current is rectified into direct current by the rectifier 9 on the right and then transmitted to the primary coil 2. Through the principle of electromagnetic induction, the secondary coil 4 outputs the required voltage, and then is rectified by the rectifier 9 on the left for use by external electrical appliances.

[0026] It is worth noting that the rectifier 9 disclosed in the above embodiment can be freely configured according to the actual application scenario, and it is recommended to use the ATC230M20 III model high-frequency rectifier.

[0027] The above are only the embodiments of the present utility model, and thus do not limit the patent scope of the present utility model. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall similarly be included within the patent protection scope of the present utility model.

Claims

1. An electronic transformer with good lightning protection effect, characterized in that: It comprises an iron core (1), a protective shell (7) and a lightning protection insulation mechanism (8); An iron core (1): a primary coil (2) is wound around the middle thereof, the outer arc surface of the primary coil (2) is wrapped with a first insulating tape (3), a secondary coil (4) is wound around the outer arc surface of the first insulating tape (3), and the outer arc surface of the secondary coil (4) is wrapped with a second insulating tape (5); a fixing seat (6) is provided at the lower end of the iron core (1), and a rectifier (9) is provided on the surface of the fixing seat (6); A protective shell (7): the protective shell (7) covers the outside of the iron core (1); the fixing seat (6) is fixedly connected to the protective shell (7) by bolts; the left and right sides of the protective shell (7) are provided with wiring terminals (11); the input end of the primary coil (2) is electrically connected to the output end of the wiring terminal (11) on the right side through the rectifier (9) on the right side; the input end of the secondary coil (4) is electrically connected to the output end of the wiring terminal (11) on the left side through the rectifier (9) on the left side; Lightning protection insulation mechanism (8): arranged inside the protective housing (7).

2. The electronic transformer with good lightning protection effect according to claim 1, characterized in that: The protective shell (7) comprises a lower shell (71), an upper shell (72) and an L-shaped plate (74). There are two L-shaped plates (74) which are symmetrically distributed on the left and right sides. The two L-shaped plates (74) have opposite outer sides of the vertical plates and are provided with connection terminals (11). A lower shell (71) is provided between the two L-shaped plates (74). The upper shell (72) is placed on the upper end of the lower shell (71). The fixing seat (6) is fixedly connected to the bottom wall of the lower shell (71) by bolts. The iron core (1) is located inside the whole formed by the lower shell (71) and the upper shell (72).

3. The electronic transformer with good lightning protection effect according to claim 2, characterized in that: The protective shell (7) further comprises a connecting plate (73), wherein the connecting plates (73) are respectively arranged at the left and right ends of the upper shell (72), and the connecting plates (73) are respectively fixedly connected to the L-shaped plate (74) by bolts 2.

4. The electronic transformer with good lightning protection effect according to claim 2, characterized in that: The lightning protection insulation mechanism (8) comprises an insulation bottom plate (84), which is arranged on the bottom wall of the lower shell (71), and the surface of the insulation bottom plate (84) is respectively provided with clearance holes for fitting with bolts.

5. An electronic transformer with good lightning protection effect according to claim 4, characterized in that: The lightning protection insulation mechanism (8) further comprises a circular insulating plate (81) and an insulating top cover (83); the circular insulating plate (81) is arranged on the upper surface of the insulating bottom plate (84); the insulating top cover (83) is arranged on the top wall of the upper shell (72); and the iron core (1) and the rectifier (9) are both located inside the circular insulating plate (81).

6. The electronic transformer with good lightning protection effect according to claim 5, wherein: The lightning protection insulation mechanism (8) further comprises a wire threading groove (82), wherein the wire threading groove (82) is respectively arranged at the left and right ends of the circular insulation plate (81) and the insulation top cover (83).

7. An electronic transformer with good lightning protection effect according to claim 2, characterized in that: The upper surface of the transverse plate body of the L-shaped plate (74) is respectively provided with mounting holes (10).

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