Automatic voltage regulating device for low-voltage line

Abstract

The utility model provides a low-voltage line voltage automatic regulating device, which comprises an outer box welding assembly, a front outer door assembly is arranged at the front part of the outer box welding assembly, a rear outer door assembly is arranged at the rear part of the outer box welding assembly, the outer box welding assembly, the front outer door assembly and the rear outer door assembly form a hollow cavity structure, an automatic voltage regulating group is arranged in the cavity, and the automatic voltage regulating group is arranged in the cavity. A rear baffle assembly is installed at the rear end of the bottom of the rear outer door assembly and located between the automatic pressure adjusting assembly and the rear outer door assembly. The beneficial effects of the utility model are that better sealing performance, protection performance, insulation performance and safety are realized, and more convenient installation, disassembly, maintenance and wiring operation can be realized.

Description

Technical Field

[0001] This utility model belongs to the field of low-voltage management technology, and in particular relates to an automatic voltage adjustment device for low-voltage lines. Background Technology

[0002] With the popularization of photovoltaic power generation technology and the influence of national poverty alleviation policies, the number and capacity of rural distributed photovoltaic installations have gradually increased. However, this has also brought some problems. For example, when the photovoltaic grid connection point is far from the transformer, it is easy to cause the voltage at the end of the line to exceed the limit, increasing the risk of users' electrical appliances being burned out due to overvoltage. In addition, photovoltaic power generation has the characteristics of large diurnal cycle fluctuations and random fluctuations due to weather, and voltage exceeding the limit problem occurs frequently.

[0003] Rural residents in my country live in scattered settlements, and with social development and the continuous improvement of people's living standards, the number of electrical appliances is also constantly increasing. Qualified voltage is essential to ensure the safety, efficiency, and reliability of electrical appliances, and the voltage qualification rate is also an important indicator reflecting the quality of power supply services provided by power companies. Currently, the following issues exist regarding electricity use at the end of the rural power grid:

[0004] (1) In the early stages of establishing rural power grids in remote rural areas, the capacity of rural power grid transformers was limited, the power supply radius was large, and the transmission lines were long, which resulted in problems such as low power supply reliability and poor power quality for end users of the rural power grid.

[0005] (2) With the development of society, rural power grids have become characterized by large seasonal load differences, unbalanced three-phase loads, and large installed loads. This has resulted in serious low voltage problems at the end of rural power grids, causing most electrical equipment to malfunction and seriously affecting users' electricity demand.

[0006] To solve the above voltage problems, an automatic voltage regulation device for low-voltage lines is needed. Utility Model Content

[0007] In view of this, the present invention aims to propose an automatic voltage regulation device for low-voltage lines to solve the problems of low reliability, poor power quality and large load differences of existing devices.

[0008] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0009] An automatic voltage regulation device for low-voltage lines includes an outer casing assembly. A front outer door assembly is installed at the front of the outer casing assembly, and a rear outer door assembly is installed at the rear of the outer casing assembly. The outer casing assembly, the front outer door assembly, and the rear outer door assembly form a hollow cavity structure. An automatic voltage regulating unit is installed inside the hollow cavity structure, and a rear baffle assembly is installed at its bottom rear end. The rear baffle assembly is located between the automatic voltage regulating unit and the rear outer door assembly.

[0010] The front outer door assembly includes a transparent window, a rubber ring, and a front outer door panel. The transparent window is provided in the front outer door panel, and a rubber ring is installed between the transparent window and the front outer door panel.

[0011] Furthermore, the outer casing assembly includes an outer shell, four lifting rings are installed on the top of the outer shell, an installation block is provided below the lifting rings, a rubber pad is installed on the upper part of the outer shell between the lifting rings and the installation block, a base bracket is welded to the bottom of the outer shell, a left slide rail baffle is welded to the left side of the base bracket, and a right slide rail baffle is welded to its right side, a positioning plate is welded to the front of the base bracket, the positioning plate is located between the automatic pressure regulating group and the front outer door assembly, and a door lock is installed on the side of the outer shell.

[0012] Furthermore, a left protruding edge is installed on the top left side of the housing, and a right protruding edge is installed on its top right side. A grounding point screw hole is opened on the side of the housing, and heat dissipation holes are opened on the bottom, left and right sides of the housing.

[0013] Furthermore, mounting screw holes are provided on the side and bottom of the outer casing, and all mounting screw holes are blind holes.

[0014] Furthermore, the number of automatic voltage regulating units placed inside the outer casing assembly is 1-3, and the type of automatic voltage regulating unit is single-phase automatic voltage regulating or three-phase automatic voltage regulating.

[0015] Furthermore, the automatic pressure regulating group includes a first group of automatic pressure regulating units, a second group of automatic pressure regulating units, a third group of automatic pressure regulating units, and a folding handle. The top of the first group of automatic pressure regulating units, the second group of automatic pressure regulating units, and the third group of automatic pressure regulating units are all equipped with folding handles.

[0016] Furthermore, the rear bumper assembly includes a rear bumper, which is mounted by a nut.

[0017] Furthermore, the transparent window is made of tempered glass or acrylic, and its position is directly opposite the screen of the automatic voltage regulating unit.

[0018] Furthermore, the rear outer door assembly has heat dissipation holes.

[0019] Furthermore, the paint around the grounding point screw hole is removed.

[0020] Compared with existing technologies, the low-voltage line voltage automatic adjustment device of this utility model has the following advantages:

[0021] This utility model discloses an automatic voltage regulating device for low-voltage lines. It innovatively addresses the problems of existing voltage regulating devices, such as large size, poor sealing, low protection level, poor insulation, and lack of anti-collision safety devices. The device achieves excellent sealing, miniaturization, modularity, and anti-disassembly. It also boasts an attractive appearance, convenient wiring, easy maintenance, high safety, comprehensive functions, simple operation, high insulation, and a high protection level, thus increasing safety. It facilitates wiring and maintenance, saving repair time. The sealed structure improves the protection level and insulation, especially in humid indoor conditions, preventing external water from entering and ensuring the dryness of the internal electronic components, thus avoiding malfunctions caused by short circuits or moisture aging of electronic component circuits. Attached Figure Description

[0022] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0023] Figure 1 This is a schematic diagram of the overall disassembly structure of the machine according to an embodiment of the present utility model;

[0024] Figure 2 This is a sealed cross-sectional view of the transparent window of the front outer door assembly described in this utility model;

[0025] Figure 3 This is a right-side view of the complete machine described in this utility model;

[0026] Figure 4 An oblique view of the bottom and side surfaces of the outer casing welded component described in this utility model;

[0027] Figure 5 This is a cross-sectional view of the sealing at the lifting ring described in this utility model;

[0028] Figure 6 This is a slanted view of the automatic pressure regulating assembly and the left slide rail baffle described in this utility model;

[0029] Figure 7 This is a slanted view of the automatic pressure regulating assembly and the right-side slide rail baffle described in this utility model;

[0030] Figure 8 This is an assembly diagram of the automatic pressure regulating unit and the rear baffle described in this utility model;

[0031] Figure 9 This is a schematic diagram of the sealing at the installation point of the outer casing welded component described in this utility model.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Front outer door assembly; 11. Transparent window; 12. Rubber ring; 13. Front outer door panel; 2. Outer casing welded parts; 21. Hanging ring; 22. Rubber pad; 23. Outer shell; 231. Left protruding edge; 232. Right protruding edge; 233. Grounding point screw hole; 234. Heat dissipation hole; 24. Mounting block; 241. Mounting screw hole; 25. Base bracket; 26. Left slide rail baffle; 27. Right slide rail baffle; 28. Door lock; 29. ​​Positioning plate; 3. Automatic pressure regulating group; 31. First automatic pressure regulating unit; 32. Second automatic pressure regulating unit; 33. Third automatic pressure regulating unit; 34. Folding handle; 4. Rear baffle assembly; 41. Rear baffle; 42. Nut; 5. Rear outer door assembly. Detailed Implementation

[0034] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0035] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0036] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0038] like Figures 1 to 9As shown, a low-voltage line voltage automatic adjustment device includes an outer casing welded component 2. A front outer door assembly 1 is installed at the front of the outer casing welded component 2, and a rear outer door assembly 5 is installed at the rear of it. The outer casing welded component 2, the front outer door assembly 1, and the rear outer door assembly 5 form a hollow cavity structure. An automatic voltage regulating group 3 is installed inside the cavity, and a rear baffle assembly 4 is installed at its bottom rear end. The rear baffle assembly 4 is located between the automatic voltage regulating group 3 and the rear outer door assembly 5.

[0039] The specific implementation method is as follows:

[0040] In a preferred embodiment of this utility model, the front outer door assembly 1 includes a transparent window 11, a rubber ring 12, and a front outer door panel 13. The transparent window 11 is provided on the front outer door panel 13, and the rubber ring 12 is installed between the transparent window 11 and the front outer door panel 13. The transparent window 11 is made of tempered glass or acrylic, and its position is directly opposite the screen of the automatic voltage regulating group 3. In this embodiment, the front outer door assembly 1 can be opened without climbing a pole to conveniently observe and record the displayed values ​​of parameters such as voltage and current on the ground, reducing later maintenance costs and providing convenience and speed. The transparent window 11 and the rubber ring 12 are sealed together, with the transparent window 11 embedded in the rubber ring 12, and the front outer door panel 13 embedded in the rubber ring 12 on the other side. The protection level is high, meeting the conditions for outdoor use and preventing rainwater from entering the inside of the chassis.

[0041] In a preferred embodiment of this utility model, a left protruding edge 231 is installed on the top left side of the outer casing 23, and a right protruding edge 232 is installed on its top right side. A grounding screw hole 233 is provided on the side of the outer casing 23. Heat dissipation holes 234 are provided on the bottom, left, and right sides of the outer casing 23. Heat dissipation holes 234 are also provided on the rear outer door assembly 5. In this embodiment, the protruding edges function similarly to a rain cover, increasing the rainproof area and preventing rainwater from flowing into the chassis, thus further improving the protection level. As the heat generated by the components increases during operation, ventilation from all sides facilitates heat dissipation and does not affect the operating efficiency of the components.

[0042] In a preferred embodiment of this utility model, the outer casing assembly 2 includes an outer shell 23. Four lifting rings 21 are installed on the top of the outer shell 23. An installation block 24 is provided below the lifting rings 21. A rubber pad 22 is installed on the upper part of the outer shell 23 between the lifting rings 21 and the installation block 24. A base bracket 25 is welded to the bottom of the outer shell 23. A left slide rail baffle 26 is welded to the left side of the base bracket 25, and a right slide rail baffle 27 is welded to its right side. A positioning plate 29 is welded to the front of the base bracket 25. The positioning plate 29 is located between the automatic pressure regulating group 3 and the front outer door assembly 1. A door lock 28 is installed on the side of the outer shell 23. In this embodiment, the four lifting rings 21 have a large load-bearing capacity, which facilitates safe lifting and installation of equipment and protects the safety of personnel and equipment. There is a rubber gasket 22 between the lifting rings 21 and the mounting block 24 for sealing. The screw holes on the mounting block 24 are blind holes, which increases the sealing performance. The front outer door assembly 1 and the rear outer door assembly 5 are fixed to the front and rear of the outer box assembly 2 with door locks 28. They open in the same direction on the same side. The door locks 28 are on the side of the utility pole, which makes it convenient for personnel to climb the pole and open the door to connect, install and maintain the equipment.

[0043] In a preferred embodiment of this invention, the paint around the grounding screw hole 233 is removed, and mounting screw holes 241 are provided on the side and bottom of the outer casing 23. All mounting screw holes 241 are blind holes. In this embodiment, the grounding screw hole 233 design is more suitable for packaging and transportation than an external screw rod. The mounting screw holes 241 on the side and bottom improve the protection level, facilitate installation on a mounting bracket, and the side mounting screw holes 241 prevent the equipment from tilting, thus improving safety.

[0044] In a preferred embodiment of this utility model, the automatic pressure regulating group 3 includes a first automatic pressure regulating unit 31, a second automatic pressure regulating unit 32, a third automatic pressure regulating unit 33, and a folding handle 34. The top of the first automatic pressure regulating unit 31, the second automatic pressure regulating unit 32, and the third automatic pressure regulating unit 33 are all equipped with folding handles 34. The rear baffle assembly 4 includes a rear baffle 41, which is installed by nuts 42. In this embodiment, the folding handle 34 can be folded 90°, and the automatic voltage regulating unit 3 can be pushed along the left slide baffle 26 and the right slide baffle 27 to the positioning plate 29. Finally, the automatic voltage regulating unit 3 is fixed by installing the rear baffle 41 with the nut 42, which facilitates quick and accurate installation of the automatic voltage regulating unit 3. The gap between the slide and the automatic voltage regulating unit 3 is very small, which also acts as a baffle to prevent mechanical vibration from causing internal parts to fall off. One to three automatic voltage regulating units can be placed inside the outer casing assembly 2, namely single-phase automatic voltage regulating and three-phase automatic voltage regulating. The first automatic voltage regulating unit 31, the second automatic voltage regulating unit 32 and the third automatic voltage regulating unit 33 can automatically regulate voltage independently without affecting each other. Each automatic voltage regulating unit is assembled and wired outside the casing, which reduces labor time and facilitates single-unit replacement during maintenance.

[0045] The advantages and beneficial effects of this utility model are as follows:

[0046] This utility model discloses an automatic voltage regulating device for low-voltage lines. It innovatively addresses the problems of existing voltage regulating devices, such as large size, poor sealing, low protection level, poor insulation, and lack of anti-collision safety devices. The device achieves excellent sealing, miniaturization, modularity, and anti-disassembly. It also boasts an attractive appearance, convenient wiring, easy maintenance, high safety, comprehensive functions, simple operation, high insulation, and a high protection level, thus increasing safety. It facilitates wiring and maintenance, saving repair time. The sealed structure improves the protection level and insulation, especially in humid indoor conditions, preventing external water from entering and ensuring the dryness of the internal electronic components, thus avoiding malfunctions caused by short circuits or moisture aging of electronic component circuits.

[0047] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A low-voltage line voltage automatic adjustment device, characterized in that: The device includes an outer casing assembly (2), a front outer door assembly (1) is installed at the front of the outer casing assembly (2), and a rear outer door assembly (5) is installed at the rear of the outer casing assembly (2). The outer casing assembly (2), the front outer door assembly (1) and the rear outer door assembly (5) form a hollow cavity structure. An automatic pressure regulating assembly (3) is installed inside the hollow cavity structure, and a rear baffle assembly (4) is installed at the bottom rear end of the cavity. The rear baffle assembly (4) is located between the automatic pressure regulating assembly (3) and the rear outer door assembly (5). The front outer door assembly (1) includes a transparent window (11), a rubber ring (12) and a front outer door panel (13). The front outer door panel (13) has a transparent window (11) and a rubber ring (12) is installed between the transparent window (11) and the front outer door panel (13).

2. The low-voltage line voltage automatic adjustment device according to claim 1, characterized in that: The outer casing assembly (2) includes an outer shell (23), four lifting rings (21) are installed on the top of the outer shell (23), an installation block (24) is provided below the lifting rings (21), a rubber pad (22) is installed on the upper part of the outer shell (23) between the lifting rings (21) and the installation block (24), a base bracket (25) is welded to the bottom of the outer shell (23), a left slide rail baffle (26) is welded to the left side of the base bracket (25), and a right slide rail baffle (27) is welded to its right side, a positioning plate (29) is welded to the front of the base bracket (25), the positioning plate (29) is located between the automatic pressure regulating group (3) and the front outer door assembly (1), and a door lock (28) is installed on the side of the outer shell (23).

3. The low-voltage line voltage automatic adjustment device according to claim 2, characterized in that: The outer casing (23) has a left protruding edge (231) installed on the top left side and a right protruding edge (232) installed on the top right side. The outer casing (23) has a grounding screw hole (233) on its side and heat dissipation holes (234) on its bottom, left and right sides.

4. The low-voltage line voltage automatic adjustment device according to claim 2, characterized in that: The outer casing (23) has mounting screw holes (241) on its side and bottom, and the mounting screw holes (241) are all blind holes.

5. The low-voltage line voltage automatic adjustment device according to claim 1, characterized in that: The number of automatic voltage regulating units placed inside the outer casing assembly (2) is 1-3, and the type of automatic voltage regulating unit is single-phase automatic voltage regulating or three-phase automatic voltage regulating.

6. The low-voltage line voltage automatic adjustment device according to claim 5, characterized in that: The automatic pressure regulating group (3) includes a first automatic pressure regulating unit (31), a second automatic pressure regulating unit (32), a third automatic pressure regulating unit (33) and a folding handle (34). The top of the first automatic pressure regulating unit (31), the second automatic pressure regulating unit (32) and the third automatic pressure regulating unit (33) are all equipped with folding handles (34).

7. The low-voltage line voltage automatic adjustment device according to claim 1, characterized in that: The rear baffle assembly (4) includes a rear baffle (41) which is mounted by a nut (42).

8. The low-voltage line voltage automatic adjustment device according to claim 1, characterized in that: The transparent window (11) is made of tempered glass or acrylic and is positioned directly opposite the screen of the automatic voltage regulating group (3).

9. The low-voltage line voltage automatic adjustment device according to claim 1, characterized in that: The rear outer door assembly (5) has heat dissipation holes (234).

10. The low-voltage line voltage automatic adjustment device according to claim 2, characterized in that: The paint around the grounding point screw hole (233) is removed.

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