Miniature mutual inductor for single-phase intelligent electric meter

Abstract

The utility model provides a miniature mutual inductor for a single-phase intelligent electric meter, which comprises a mutual inductor body, a wire box, a lead, a fixing frame and a mounting frame, the wire box is fixed on the outer side surface of the mutual inductor body, and the lead is fixed inside the wire box; one end of the wire is connected with a coil in the mutual inductor body, and the other end of the wire is connected with a measuring unit in the single-phase intelligent electric meter; fixing frames are fixed to the two side faces of the mutual inductor body, a mounting frame is fixed to the outer side face of the mutual inductor body, and the mounting frame is fixed into the single-phase intelligent electric meter. According to the utility model, through the arrangement of the fixing frame and the mounting frame, a line needing to be measured can be fixed during use, so that displacement of the line needing to be measured is avoided, and the device can be conveniently mounted in the single-phase intelligent electric meter.

Description

Technical Field

[0001] The utility model belongs to the technical field of automotive parts, and particularly relates to a micro-transformer for a single-phase smart meter. Background Technique

[0002] A single-phase smart meter is an important part of the power system, used to accurately measure and record the electricity consumption of users. The micro-transformer is a key component in the single-phase smart meter. It is responsible for converting high voltage or large current into low voltage or small current, so that the meter can accurately measure and record. The performance of the micro-transformer directly affects the measurement accuracy and stability of the meter.

[0003] In the existing structure of the micro-transformer, it usually includes a transformer body, a wire, and a simple fixing frame. The transformer body is the core component responsible for the conversion of electrical energy; the wire is used to connect the transformer body and the measurement unit of the meter to transmit electrical energy information; the fixing frame is used to fix the transformer body inside the meter to ensure its stable operation.

[0004] However, these existing structures have some obvious disadvantages in practical applications:

[0005] First of all, the fixing device of the existing micro-transformer is usually relatively simple and cannot effectively fix the measurement line. During the operation of the meter, due to factors such as vibration, the measurement line is prone to displacement, resulting in inaccurate measurement results; secondly, the fixing frame of the existing micro-transformer is relatively simple and cannot be flexibly installed and fixed according to actual needs.

[0006] Therefore, it is very necessary to invent a micro-transformer for a single-phase smart meter. Content of the Utility Model

[0007] The purpose of the utility model is to provide a micro-transformer for a single-phase smart meter to solve the problems mentioned in the background technique.

[0008] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0009] The utility model provides a micro-transformer for a single-phase smart meter, which includes a transformer body, a wire box, a wire, a fixing frame, and an installation frame. A wire box is fixed on the outer side of the transformer body, and a wire is fixed inside the wire box; one end of the wire is connected to the coil inside the transformer body, and the other end of the wire is connected to the measurement unit inside the single-phase smart meter; fixing frames are fixed on both sides of the transformer body, and an installation frame is fixed on the outer side of the transformer body through bolts, and the installation frame is fixed inside the single-phase smart meter through bolts.

[0010] Furthermore, the fixing bracket includes a connecting column, a frame body, adjusting studs, sliding plates and rubber pads. The outer side surface of the frame body is fixedly welded with a connecting column, and the other end of the connecting column is fixed to the current transformer body; two sliding plates are slidably installed inside the frame body, one side surface of the sliding plate is fixedly provided with a rubber pad, and the other side surface of the sliding plate is connected to the adjusting stud by thread engagement; the adjusting studs are rotatably connected to the frame body. Such a setting can fix the line to be measured, avoiding displacement of the line to be measured due to factors such as vibration.

[0011] Furthermore, the rubber pad includes a limiting pad and an expanding pad. The limiting pad is fixed on one side surface of the sliding plate, and a plurality of expanding pads are sequentially slidably installed on the other side surface of the limiting pad. Different-diameter grooves are formed on the side surface of the expanding pad away from the limiting pad. Such a setting facilitates clamping and fixing of lines with different diameters.

[0012] Furthermore, the mounting bracket includes a vertical plate, a horizontal plate and a support plate. One end of the vertical plate is fixedly welded with a horizontal plate, and the vertical plate is perpendicular to the horizontal plate; support plates are fixedly welded on the side surfaces of the vertical plate and the horizontal plate, and the support plates are fixed to the current transformer body by bolts. Such a setting facilitates fixing the current transformer body inside the single-phase smart meter.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. With the setting of the fixing bracket of the utility model, after the line to be measured passes through the middle of the current transformer body, it can pass through the middle of the two sliding plates, and then by rotating the corresponding adjusting stud, the sliding plate drives the corresponding rubber pad to clamp the line to be measured, thereby fixing the line to be measured to the middle of the current transformer body, avoiding displacement of the line to be measured due to factors such as vibration. Among them, the setting of the rubber pad facilitates clamping and fixing of lines with different diameters.

[0015] 2. With the setting of the mounting bracket of the utility model, since the vertical plate and the horizontal plate are perpendicular to each other, the corresponding vertical plate or horizontal plate can be fixed to the single-phase smart meter by bolts according to the position where the current transformer body needs to be installed inside the single-phase smart meter, and the installation is relatively flexible. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts.

[0017] Figure 1 It is a schematic structural diagram of the present utility model.

[0018] Figure 2 It is a schematic structural diagram of the fixing bracket of the present utility model.

[0019] Figure 3 It is a schematic structural diagram of the rubber pad of the present utility model.

[0020] Figure 4 It is a schematic structural diagram of the mounting bracket of the present utility model.

[0021] Figure 5 It is a schematic structural diagram of the first mounting method of the present utility model.

[0022] Figure 6 It is a schematic structural diagram of the second mounting method of the present utility model.

[0023] Figure 7 It is a schematic structural diagram of the third mounting method of the present utility model.

[0024] In the figure:

[0025] 1 - Transformer body, 2 - Wire box, 3 - Wire, 4 - Fixing bracket, 41 - Connecting column, 42 - Frame body, 43 - Adjusting stud, 44 - Sliding plate, 45 - Rubber pad, 451 - Limiting pad, 452 - Extension pad, 5 - Mounting bracket, 51 - Vertical plate, 52 - Horizontal plate, 53 - Support plate, 6 - Single-phase smart electricity meter. Specific implementation manners

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with 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.

[0027] In the description of the present utility model, it should be understood that the terms "upper", "middle", "outer", "inner", "around", etc. indicating the orientation or position relationship are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0028] Please refer to Figure 1As shown in the figure, the utility model relates to a miniature current transformer for a single-phase smart meter, which comprises a current transformer body 1, a wire box 2, a wire 3, a fixing frame 4 and a mounting frame 5. The outer side of the current transformer body 1 is fixedly provided with the wire box 2, and a wire 3 is fixedly arranged inside the wire box 2; one end of the wire 3 is connected to the coil inside the current transformer body 1, and the other end of the wire 3 is connected to the measuring unit inside the single-phase smart meter 6; fixing frames 4 are fixedly arranged on both sides of the current transformer body 1, and the outer side of the current transformer body 1 is fixedly provided with the mounting frame 5 through bolts, and the mounting frame 5 is fixedly mounted inside the single-phase smart meter 6 through bolts.

[0029] As Figure 2 shown, the fixing frame 4 comprises a connecting column 41, a frame body 42, an adjusting screw 43, a sliding plate 44 and a rubber pad 45. The outer side of the frame body 42 is fixedly provided with the connecting column 41 through welding, and the other end of the connecting column 41 is fixed to the current transformer body 1; two sliding plates 44 are slidably mounted inside the frame body 42, one side of the sliding plate 44 is fixedly provided with the rubber pad 45, and the other side of the sliding plate 44 is connected to the adjusting screw 43 through thread engagement; the adjusting screws 43 are rotatably connected to the frame body 42. After the circuit to be measured passes through the middle of the current transformer body 1, the circuit to be measured can pass through the middle of the two sliding plates 44, and then by rotating the corresponding adjusting screw 43, the sliding plate 44 drives the corresponding rubber pad 45 to clamp the circuit to be measured, so as to fix the circuit to be measured to the middle of the current transformer body 1, and avoid the displacement of the circuit to be measured caused by factors such as vibration.

[0030] As Figure 3 shown, the rubber pad 45 comprises a limiting pad 451 and an extension pad 452. The limiting pad 451 is fixed to one side of the sliding plate 44, and a plurality of extension pads 452 are slidably mounted on the other side of the limiting pad 451 in sequence. Different-diameter grooves are formed on the side of the extension pad 452 away from the limiting pad 451. During use, the appropriate number of extension pads 452 can be selected according to the diameter of the circuit to be measured, so as to facilitate the clamping and fixing of circuits with different diameters.

[0031] As Figures 4 to 7 shown, the mounting frame 5 comprises a vertical plate 51, a horizontal plate 52 and a support plate 53. One end of the vertical plate 51 is fixedly provided with the horizontal plate 52 through welding, and the vertical plate 51 is perpendicular to the horizontal plate 52; support plates 53 are fixedly arranged on the sides of the vertical plate 51 and the horizontal plate 52 through welding, and the support plates 53 are fixedly connected to the current transformer body 1 through bolts. During use, since the vertical plate 51 and the horizontal plate 52 are perpendicular to each other, the corresponding vertical plate 51 or horizontal plate 52 can be fixed to the single-phase smart meter 6 through bolts according to the position where the current transformer body 1 needs to be mounted inside the single-phase smart meter 6.

[0032] Please refer to Figures 1 - 7 As shown, the present utility model is a miniature current transformer for a single-phase smart meter, and its working principle is as follows:

[0033] During installation, first fix this device to the inside of the single-phase smart meter 6 through the mounting bracket 5, then pass the line to be measured through the inside of the transformer body 1, and fix the line to be measured through the fixing bracket 4;

[0034] During use, the coil inside the transformer body 1 senses the data of the line to be measured, and then transmits this data to the measurement unit inside the single-phase smart meter 6 through the wire 3.

[0035] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0036] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific embodiments described. Obviously, according to the content of this specification, many modifications and changes can be made. This specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the art can well understand and utilize the present utility model. The present utility model is only limited by the claims and their full scope and equivalents.

Claims

1. A micro-transformer for a single-phase smart meter, comprising a transformer body (1), a wire box (2), a wire (3), a fixing bracket (4) and a mounting bracket (5), characterized in that: A wire box (2) is fixed on the outer side of the mutual inductor body (1), and a wire (3) is fixed inside the wire box (2); one end of the wire (3) is connected to the coil inside the mutual inductor body (1), and the other end of the wire (3) is connected to the measuring unit inside the single-phase smart meter (6); fixing frames (4) are fixed on both side surfaces of the mutual inductor body (1), and a mounting frame (5) is fixed on the outer side surface of the mutual inductor body (1), and the mounting frame (5) is fixed inside the single-phase smart meter (6).

2. The miniature mutual inductor for a single-phase smart meter according to claim 1, characterized in that: The fixing frame (4) includes a connecting column (41), a frame body (42), an adjusting screw (43), a sliding plate (44) and a rubber pad (45). The connecting column (41) is fixed on the outer side surface of the frame body (42), and the other end of the connecting column (41) is fixed to the mutual inductor body (1); two sliding plates (44) are slidably installed inside the frame body (42), a rubber pad (45) is fixed on one side surface of the sliding plate (44), and the other side surface of the sliding plate (44) is connected to the adjusting screw (43) through thread engagement; the adjusting screw (43) is rotatably connected to the frame body (42).

3. The miniature mutual inductor for a single-phase smart meter according to claim 2, characterized in that: The rubber pad (45) includes a limiting pad (451) and an expanding pad (452). The limiting pad (451) is fixed on one side surface of the sliding plate (44), and a plurality of expanding pads (452) are sequentially slidably installed on the other side surface of the limiting pad (451). Grooves with different diameters are formed on the side surfaces of the expanding pads (452) away from the limiting pad (451).

4. The miniature mutual inductor for a single-phase smart meter according to claim 1, characterized in that: The mounting frame (5) includes a vertical plate (51), a horizontal plate (52) and a support plate (53). One end of the vertical plate (51) is fixed with the horizontal plate (52), and the vertical plate (51) is perpendicular to the horizontal plate (52); support plates (53) are fixed on the side surfaces of the vertical plate (51) and the horizontal plate (52), and the support plates (53) are fixed to the mutual inductor body (1).

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