A power distribution transformer

Abstract

The utility model discloses a distribution transformer, including transformer body, the transformer body inner wall is located at the top fixed mounting has the baffle, and the baffle top surface and transformer body inner wall between form the incoming line cavity, the transformer body outer wall is set up and has the incoming line mouth, install the incoming line sleeve in the incoming line mouth, the incoming line sleeve includes fixed cylinder, fixed plate, connecting cylinder and locking head, one end of fixed cylinder is fixedly connected with fixed plate, the fixed plate's far from fixed cylinder one end fixedly connected with connecting cylinder, the outer wall surface of connecting cylinder is set up and has the external thread, the locking head rotates in the incoming line cavity, the one end of connecting cylinder passes the incoming line mouth and is connected with the locking head threadedly through the external thread.

Description

Technical Field

[0001] This utility model relates to the field of power distribution transformer technology, specifically a power distribution transformer. Background Technology

[0002] A distribution transformer, or simply "distribution transformer," is a static electrical device in a power distribution system that transmits AC power by transforming AC voltage and current according to the law of electromagnetic induction. In some regions, power transformers with voltage levels below 35 kV (mostly 10 kV and below) are called distribution transformers, and the place where a distribution transformer is installed is called a substation. Currently, the applications requiring transformers are becoming increasingly widespread.

[0003] However, existing distribution transformers have a cable inlet bend fixed to the casing with screws for easy cable entry. In open-air conditions, rainwater and other liquids can easily flow into the transformer through the gap between the bend and the transformer casing, thus affecting the service life of the distribution transformer. Summary of the Invention

[0004] The purpose of this utility model is to provide a distribution transformer to solve the problem mentioned in the background art that the existing distribution transformer shell is equipped with an inlet bend fixed by screws for easy inlet. However, in the case of open-air conditions, rainwater and other liquids can easily flow into the distribution transformer through the gap between the bend and the distribution transformer shell, thereby affecting the service life of the distribution transformer.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a distribution transformer, comprising a transformer body, a partition plate fixedly installed on the upper part of the inner wall of the transformer body, and an inlet cavity formed between the top surface of the partition plate and the inner wall of the transformer body, an inlet port opened on the outer wall of the transformer body, an inlet sleeve installed in the inlet port, the inlet sleeve comprising a fixed cylinder, a fixed plate, a connecting cylinder and a locking head, a fixed plate fixedly connected to one end of the fixed cylinder, a connecting cylinder fixedly connected to the end of the fixed plate away from the fixed cylinder, an external thread opened on the outer wall surface of the connecting cylinder, the locking head rotating in the inlet cavity, and one end of the connecting cylinder passing through the inlet port and threadedly connected to the locking head through the external thread.

[0006] Preferably, the fixed cylinder is in communication with the connecting cylinder.

[0007] Preferably, an annular sealing ring is fixedly installed on the surface of the fixing plate at one end of the connecting cylinder, and the outer wall of the annular sealing ring is in contact with the outer wall of the transformer body.

[0008] Preferably, the fixing cylinder, fixing plate, and connecting cylinder adopt an integral molding structure design.

[0009] Preferably, the locking head has multiple protrusions evenly distributed and fixedly connected on its surface.

[0010] Beneficial effects

[0011] Compared with existing technologies, the beneficial effects of this utility model are as follows:

[0012] By combining the structural design of this utility model, the inlet sleeve is fixedly installed at the inlet by the threaded connection between the connecting cylinder and the locking head. At the same time, the locking head is threadedly connected to the connecting cylinder. When the locking head rotates on the surface of the connecting cylinder, the distance between the locking head and the fixing plate is shortened. Under the rotation of the locking head, the surface of the fixing plate is in contact with the outer wall of the transformer body, thereby effectively solving the problems mentioned in the background art. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of the transformer body of this utility model;

[0015] Figure 3 This is a schematic diagram of the inlet sleeve structure of this utility model.

[0016] The correspondence between the labels and component names in the attached figures is as follows:

[0017] 1. Transformer body; 2. Partition plate; 3. Inlet cavity; 4. Inlet port; 5. Inlet sleeve; 51. Fixing sleeve;

[0018] 52. Connecting cylinder; 53. Fixing plate; 54. Locking head; 55. External thread; 56. Annular sealing ring;

[0019] 57. Bump. Detailed Implementation

[0020] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "front," "rear," "inner," "outer," "vertical," and "horizontal," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the invention 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," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] like Figure 1-3 This is a schematic diagram of the structure of a distribution transformer according to a preferred embodiment of the present invention. In this embodiment, the distribution transformer includes a transformer body 1. A partition 2 is fixedly installed on the upper part of the inner wall of the transformer body 1, and an inlet cavity 3 is formed between the top surface of the partition 2 and the inner wall of the transformer body 1. An inlet port 4 is opened on the outer wall of the transformer body 1. An inlet sleeve 5 is installed in the inlet port 4. The inlet sleeve 5 includes a fixed cylinder 51, a fixed plate 53, a connecting cylinder 52, and a locking head 54. One end of the fixed cylinder 51 is fixedly connected to the fixed plate 53. A connecting cylinder 52 is fixedly connected to the end of the fixed plate 53 away from the fixed cylinder 51. The outer wall surface of the connecting cylinder 52 is provided with an external thread 55. The locking head 54 rotates in the inlet cavity 3. One end of the connecting cylinder 52 passes through the inlet 4 and is threadedly connected to the locking head 54 through the external thread 55, thereby realizing the function of fixing the inlet sleeve 5 to the inlet 4. This method is easy to disassemble and assemble, replaces the traditional screw fixing method, reduces the generation of connection holes, and reduces the risk of rainwater and other liquids entering. At the same time, the connecting cylinder 52 extends into the inlet cavity 3, which is beneficial to the waterproof performance during use.

[0023] In this embodiment, the fixing cylinder 51 is connected to the connecting cylinder 52, which facilitates the cable inlet connection.

[0024] In this embodiment, an annular sealing ring 56 is fixedly installed on the surface of the fixing plate 53 at one end of the connecting cylinder 52, and the outer wall of the annular sealing ring 56 is in contact with the outer wall of the transformer body 1. When the locking head 54 rotates on the surface of the connecting cylinder 52, the distance between the locking head 54 and the fixing plate 53 is shortened. Under the rotation of the locking head 54, the surface of the fixing plate 53 is in contact with the transformer body 1. The setting of the annular sealing ring 56 improves the contact ability between the surface of the fixing plate 53 and the surface of the transformer body 1 and reduces the generation of gaps.

[0025] In this embodiment, the fixing cylinder 51, fixing plate 53 and connecting cylinder 52 adopt an integral molding structure design, which increases the connection strength between them and reduces production costs.

[0026] In this embodiment, the locking head 54 is uniformly and fixedly connected with multiple protrusions 57. The protrusions 57 facilitate the operator to rotate the locking head 54 more easily.

[0027] Working principle

[0028] In practical use, the connecting cylinder 52 is aligned with the inlet 4 and passes through it so that the connecting cylinder 52 is located in the inlet cavity 3. The locking head 54 is threaded to the external thread 55 on the outer wall of the connecting cylinder 52. When the locking head 54 rotates on the surface of the connecting cylinder, the distance between the locking head 54 and the fixing plate 53 is shortened. Under the rotation of the locking head 54, the surface of the fixing plate 53 is in contact with the surface of the transformer body 1, thereby achieving the function of fixing.

[0029] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.

Claims

1. A distribution transformer, comprising a transformer body (1), characterized in that: A partition plate (2) is fixedly installed on the upper part of the inner wall of the transformer body (1), and an inlet cavity (3) is formed between the top surface of the partition plate (2) and the inner wall of the transformer body (1). An inlet port (4) is opened on the outer wall of the transformer body (1). An inlet sleeve (5) is installed in the inlet port (4). The inlet sleeve (5) includes a fixed cylinder (51), a fixed plate (53), a connecting cylinder (52), and a locking head (54). One end of the fixed cylinder (51) is fixedly connected to the fixed plate (53), and the end of the fixed plate (53) away from the fixed cylinder (51) is fixedly connected to the connecting cylinder (52). An external thread (55) is opened on the outer wall surface of the connecting cylinder (52). The locking head (54) rotates in the inlet cavity (3). One end of the connecting cylinder (52) passes through the inlet port (4) and is threadedly connected to the locking head (54) through the external thread (55).

2. A distribution transformer according to claim 1, characterized in that: The fixed cylinder (51) is connected to the connecting cylinder (52).

3. A distribution transformer according to claim 1, characterized in that: An annular sealing ring (56) is fixedly installed on the surface of the fixing plate (53) at one end of the connecting cylinder (52), and the outer wall of the annular sealing ring (56) is in contact with the outer wall of the transformer body (1).

4. A distribution transformer according to claim 2, characterized in that: The fixed cylinder (51), fixed plate (53) and connecting cylinder (52) adopt an integrated molding structure design.

5. A distribution transformer according to claim 1, characterized in that: The locking head (54) has multiple protrusions (57) evenly distributed and fixedly connected on its surface.

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