An inverted current transformer rain cover

Abstract

The utility model belongs to the electric power equipment protection technical field discloses a rain cover of inverted current transformer, including rain cover main part, the bottom and one side of rain cover main part are all open setting, the other side of rain cover main part is provided with through -hole, rain cover main part is set on the flange of inverted current transformer secondary outlet line box through the through -hole, the edge of through -hole is adapted with flange and welds fixed, rain cover main part includes baffle, baffle is set in inverted L shape, the vertical side of baffle is provided with inverted U shape through -hole, baffle is set on the outer wall of flange through inverted U shape through -hole, the opposite two side surfaces of baffle all are fixed with side baffle and weld, the utility model can effectively prevent rain to inverted current transformer's secondary junction box, and welding is convenient, does not influence product outer insulation distance and outlet line box assembly.

Description

Technical Field

[0001] This utility model relates to the field of power equipment protection technology, and in particular to a rain cover for an inverted current transformer. Background Technology

[0002] Currently, in current transformer application scenarios, more and more users are requesting that inverted current transformers be equipped with rainproof covers to ensure stable operation of the equipment in outdoor environments.

[0003] Based on the current application of rain covers for current transformers, upright current transformers, due to their structural characteristics, have readily available oil tanks, on which bow-shaped plates can be welded as rain covers. At the same time, the distance between the welded part and the low potential of the porcelain bushing is relatively large, so there are no concerns about electrical breakdown. The design and installation of their rain covers do not require additional solutions to insulation safety issues.

[0004] However, the structure of inverted current transformers differs significantly from that of upright current transformers, leading to multiple challenges in the design and installation of rain covers: First, the base of inverted current transformers is smaller, lacking sufficient space for welding rain covers, and conventional welding methods cannot be directly adapted; Second, the base area of ​​inverted current transformers is close to the low potential of the porcelain bushing, and if the shape and size of the rain cover are not properly designed, it can easily affect the external insulation distance of the product, causing electrical safety hazards; Third, when designing rain covers, the assembly requirements of the secondary outlet box must also be considered, and the structure of the rain cover must be avoided to prevent it from hindering the installation, disassembly, and subsequent maintenance of the secondary outlet box.

[0005] To address this, a rainproof cover for an inverted current transformer is proposed. Utility Model Content

[0006] The purpose of this invention is to provide a rain cover for an inverted current transformer, thereby solving or at least alleviating one or more of the aforementioned problems and other issues existing in the prior art.

[0007] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0008] A rain cover for an inverted current transformer includes a rain cover body. The bottom and one side of the rain cover body are open, and a through hole is provided on the other side of the rain cover body. The rain cover body is fitted onto the flange of the secondary output box of the inverted current transformer through the through hole. The edge of the through hole is adapted to the flange and welded to fix it.

[0009] According to the present invention, an inverted current transformer rain cover is provided, wherein the main body of the rain cover includes a baffle plate, the baffle plate is arranged in an inverted L shape, the vertical side of the baffle plate is provided with an inverted U-shaped through hole, the baffle plate is sleeved on the outer wall of the flange through the inverted U-shaped through hole, and side baffle plates are fixedly welded to the opposite two sides of the baffle plate.

[0010] According to the present invention, an inverted current transformer rain cover is provided, wherein the main body of the rain cover further includes a lower baffle, the top of the lower baffle is provided with a semi-circular notch, the lower baffle is fixedly connected to the inside of the inverted U-shaped through hole, and the semi-circular notch and the upper end of the inverted U-shaped through hole form the through hole.

[0011] In a rain cover for an inverted current transformer according to the present invention, positioning blocks are fixedly connected to both opposite sides of the lower baffle, and a positioning notch corresponding to the positioning block is provided on the side of the baffle near the inverted U-shaped through hole.

[0012] In a rain cover for an inverted current transformer according to the present invention, a reinforcing rib is fixedly welded between the baffle and the side baffle, and the reinforcing rib is located on the inner side of the rain cover body.

[0013] According to the present invention, an inverted current transformer rain cover is provided, wherein the main body of the rain cover is a stainless steel cover.

[0014] According to the present invention, an inverted current transformer rain cover is provided on the outer surface of the main body of the rain cover, wherein a hot-dip galvanized layer and a fluorocarbon coating are sequentially provided, the thickness of the hot-dip galvanized layer is 50μm-80μm, and the thickness of the fluorocarbon coating is 30μm-50μm.

[0015] In a rain cover for an inverted current transformer according to the present invention, the bend of the baffle is rounded.

[0016] This utility model has at least the following beneficial effects:

[0017] It can effectively protect the secondary junction box of the inverted current transformer from rain, and it is easy to weld without affecting the external insulation distance and junction box assembly. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2This is a schematic diagram of the structure of the baffle of this utility model;

[0021] Figure 3 This is a schematic diagram of the exploded structure of this utility model;

[0022] Figure 4 This is a structural schematic diagram from another perspective of the present invention.

[0023] Explanation of icon numbers:

[0024] 1. Rain cover body; 100. Through hole; 101. Baffle; 1011. Inverted U-shaped through hole; 1012. Positioning notch; 102. Side baffle; 103. Lower baffle; 1031. Semi-circular notch; 1032. Positioning block; 104. Reinforcing rib. Detailed Implementation

[0025] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0026] Please refer to Figures 1 to 4 As shown, an embodiment of this utility model proposes a rain cover for an inverted current transformer, including a rain cover body 1. The bottom and one side of the rain cover body 1 are open, and a through hole 100 is provided on the other side of the rain cover body 1. The rain cover body 1 is fitted onto the flange of the secondary output box of the inverted current transformer through the through hole 100. The edge of the through hole 100 is adapted to the flange and welded and fixed.

[0027] By adopting the above technical solution, the rain cover body 1 uses the openings on the bottom and one side to adapt to the installation space of the inverted current transformer secondary output box, avoiding interference with the assembly of the secondary output box; the rain cover body 1 and the flange of the secondary output box are accurately fitted through the through hole 100, and then the edge of the through hole 100 is welded to the flange to ensure that the two are firmly connected, while preventing rainwater from directly intruding into the secondary output box, thus achieving the basic rainproof function.

[0028] In this embodiment, the rain cover body 1 includes a baffle 101, which is arranged in an inverted L shape. An inverted U-shaped through hole 1011 is provided on the vertical side of the baffle 101. The baffle 101 is sleeved on the outer wall of the flange through the inverted U-shaped through hole 1011. Side baffles 102 are fixedly welded to both opposite sides of the baffle 101.

[0029] By adopting the above technical solution, the inverted L-shaped baffle 101 forms a vertical protective surface and can also assist in blocking rainwater from above through the horizontal part; the inverted U-shaped through hole 1011 provides a fitting space for the flange, ensuring the compatibility between the baffle 101 and the flange; the side baffles 102 fixedly welded on both sides of the baffle 101 form a lateral protective barrier, blocking rainwater from the side and further expanding the rainproof coverage area, while the welding fixation method ensures the connection strength between the side baffles 102 and the baffle 101.

[0030] The bend of the baffle 101 is rounded to prevent the occurrence of tip discharge.

[0031] In this embodiment, the rain cover body 1 also includes a lower baffle 103. The top of the lower baffle 103 is provided with a semi-circular notch 1031. The lower baffle 103 is fixedly connected to the inside of the inverted U-shaped through hole 1011. The semi-circular notch 1031 and the upper end of the inverted U-shaped through hole 1011 form a through hole 100.

[0032] By adopting the above technical solution, the lower baffle 103 is fixed inside the inverted U-shaped through hole 1011. The semi-circular notch 1031 at the top of the lower baffle 1031 matches the upper end of the inverted U-shaped through hole 1011, precisely forming a through hole 100 that fits the flange, thereby improving the fit between the through hole 100 and the flange. The lower baffle 103 itself can block rainwater from below, preventing rainwater from seeping in through the lower gap of the inverted U-shaped through hole 1011, thus enhancing the sealing and rainproof effect.

[0033] In this embodiment, positioning blocks 1032 are fixedly connected to both sides of the lower baffle 103. A positioning notch 1012 corresponding to the positioning block 1032 is opened on the side of the baffle 101 near the inverted U-shaped through hole 1011.

[0034] By adopting the above technical solution, the positioning block 1032 on the lower baffle 103 and the positioning notch 1012 on the baffle 101 correspond one-to-one, which can quickly achieve accurate positioning of the lower baffle 103 in the inverted U-shaped through hole 1011, avoiding offset during installation; the lower baffle 103 and the baffle 101 are more firmly connected after positioning, ensuring that the through hole 100 formed by the semi-circular notch 1031 and the inverted U-shaped through hole 1011 is accurate in size, ensuring the compatibility with the flange and the reliability of welding fixation.

[0035] In this embodiment, a reinforcing rib 104 is fixedly welded between the baffle 101 and the side baffle 102, and the reinforcing rib 104 is located on the inner side of the rain cover body 1.

[0036] By adopting the above technical solution, the reinforcing rib 104 located on the inner side of the rain cover body 1 is connected to the baffle 101 and the side baffle 102 by fixed welding, which can enhance the structural strength of the connection between the two; the inner side setting method does not affect the external contour of the rain cover body 1, does not change the distance from the low potential of the ceramic sleeve, and ensures that the external insulation performance is not affected.

[0037] In this embodiment, the rain cover body 1 is a stainless steel cover.

[0038] By adopting the above technical solution, the main body 1 of the rain cover is made of stainless steel. Stainless steel has good structural strength and corrosion resistance, which can adapt to the complex outdoor natural environment, resist the erosion of rainwater, air humidity and other factors, avoid the material corrosion leading to a decrease in the structural strength of the main body 1 of the rain cover and failure of the rainproof performance, and extend the service life of the rain cover.

[0039] In this embodiment, the outer surface of the rain cover body 1 is sequentially provided with a hot-dip galvanized layer and a fluorocarbon coating. The thickness of the hot-dip galvanized layer is 50μm-80μm, and the thickness of the fluorocarbon coating is 30μm-50μm.

[0040] By adopting the above technical solution, the hot-dip galvanized layer on the outer surface of the rain cover body 1 can enhance the electrochemical corrosion resistance of the stainless steel substrate and effectively resist the erosion of corrosive environments such as acid rain and salt spray; the outer fluorocarbon coating has excellent UV aging resistance and wear resistance, avoiding aging and peeling of the substrate surface caused by outdoor sun and rain; the two coatings work together to further improve the weather resistance and service life of the rain cover without increasing the thickness of the rain cover body 1 or affecting the external insulation distance.

[0041] Installation steps:

[0042] Clean the flange surface of the secondary output box of the inverted current transformer to remove oil, rust, dust and other impurities, and ensure that the flange surface is flat and clean to avoid affecting the welding seal and fit.

[0043] First, weld the baffle 101 to the side baffle 102;

[0044] Then the baffle 101 is fitted onto the flange of the secondary output box of the inverted current transformer through the inverted U-shaped through hole 1011;

[0045] Then, holding the lower baffle 103, align the positioning blocks 1032 on both sides of it with the positioning notches 1012 on the baffle 101, and insert them along the positioning notches 1012 to fix the lower baffle 103 inside the inverted U-shaped through hole 1011. Ensure that the semi-circular notch 1031 at the top of the lower baffle 103 precisely surrounds the upper end of the inverted U-shaped through hole 1011 to form a through hole 100 that fits the flange. The lower baffle 103 and the baffle 101 fit tightly without loosening or shifting. Then, spot weld the baffle 101 and the lower baffle 103 onto the flange. Then, use continuous welding to evenly weld along the edge of the through hole 100. The weld width is controlled at 3-5mm to ensure that the weld is firm, without any false welds or missing welds, while avoiding damage to the internal insulation components of the outlet box due to high welding temperatures.

[0046] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the present invention's conception through the foregoing teachings or related technical or knowledge. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A rainproof cover for an inverted current transformer, characterized in that, The rain cover body includes an open bottom and one side, and a through hole on the other side. The rain cover body is fitted onto the flange of the secondary output box of the inverted current transformer through the through hole. The edge of the through hole is adapted to the flange and welded to it.

2. The rainproof cover for an inverted current transformer according to claim 1, characterized in that: The rain cover body includes a baffle plate, which is arranged in an inverted L shape. An inverted U-shaped through hole is opened on the vertical side of the baffle plate. The baffle plate is sleeved on the outer wall of the flange through the inverted U-shaped through hole. Side baffle plates are fixedly welded to the opposite two sides of the baffle plate.

3. A rainproof cover for an inverted current transformer according to claim 2, characterized in that: The rain cover body also includes a lower baffle, the top of which has a semi-circular notch. The lower baffle is fixedly connected to the inside of the inverted U-shaped through hole, and the semi-circular notch and the upper end of the inverted U-shaped through hole form the through hole.

4. A rainproof cover for an inverted current transformer according to claim 3, characterized in that: Positioning blocks are fixedly connected to both opposite sides of the lower baffle, and a positioning notch corresponding to each positioning block is provided on the side of the baffle near the inverted U-shaped through hole.

5. A rainproof cover for an inverted current transformer according to claim 4, characterized in that: A reinforcing rib is fixedly welded between the baffle and the side baffle, and the reinforcing rib is located on the inner side of the rain cover body.

6. A rainproof cover for an inverted current transformer according to claim 5, characterized in that: The main body of the rain cover is made of stainless steel.

7. A rainproof cover for an inverted current transformer according to claim 6, characterized in that: The outer surface of the rain cover body is provided with a hot-dip galvanized layer and a fluorocarbon coating in sequence. The thickness of the hot-dip galvanized layer is 50μm-80μm, and the thickness of the fluorocarbon coating is 30μm-50μm.

8. A rainproof cover for an inverted current transformer according to claim 2, characterized in that: The bends of the baffle are rounded.

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