Low-voltage outdoor waterproof voltage transformer

Abstract

The utility model discloses a low-voltage outdoor waterproof voltage transformer, which comprises a transformer body and an insulating column arranged on the transformer body, the insulating column is provided with a conductive pressure plate and a detachable protective shell, and the protective shell is provided with a protective cover. A plurality of wire inlet pipes are uniformly distributed on the protective shell by taking a circle point as an axis and are inclined downwards, the protective shell is provided with a cavity capable of accommodating a conductive pressing plate, the protective shell is provided with an inner groove, a water retaining part is arranged on the outer wall of the upper part of the inner groove, and a first inclined surface is arranged below the inner groove. According to the utility model, through the inclined wire inlet pipe, rainwater is prevented from entering the concave cavity along the wire, the water retaining part prevents the rainwater from dripping into the inner groove, the first inclined surface enables the water to quickly flow downwards and prevents the water flow from accumulating at the inner groove, and the second inclined surface prevents the rainwater from entering the space between the inner thread groove and the outer thread groove, so that corrosion is prevented; and the product has the advantage of waterproof function.

Description

Technical Field

[0001] This utility model relates to the field of transformer technology, and in particular to a low-voltage outdoor waterproof voltage transformer. Background Technology

[0002] In the operation of power systems, ensuring stable operation is of paramount importance. In recent years, voltage transformers with fuses installed on the primary side of high voltage transformers have been favored by users for their advantages such as high safety performance, small footprint, and safe and reliable operation. Installing fuses on the primary side of high voltage transformers can effectively prevent faults in the transformer itself or its leads from affecting the normal operation of the high voltage system, and can also protect the transformer itself.

[0003] In existing outdoor voltage transformers, the conductive plate is typically electrically connected to the conductor. The conductive plate is threaded onto the insulating post of the voltage transformer. Rainwater erodes the conductive plate over a long period, causing it to oxidize and form verdigris, which reduces the contact resistance and conductivity. The current flowing through the conductive plate also causes it to generate significant heat. Furthermore, oxidation increases the coefficient of friction between the threaded grooves of the conductive plate and the threaded grooves of the insulating post, making it difficult to quickly remove the conductive plate. Therefore, the applicant has developed a useful design and found a solution to the above problems. The technical solution described below was developed in this context. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of traditional voltage transformer designs and provide a waterproof product.

[0005] To solve the above problems, the present invention adopts the following technical solution.

[0006] A low-voltage outdoor waterproof voltage transformer includes a transformer body and an insulating column disposed on the transformer body. The insulating column is provided with a voltage-conducting plate and a detachable protective shell. The protective shell is provided with a plurality of inlet pipes evenly distributed around a dot as an axis and inclined downward. The protective shell is provided with a cavity for accommodating the voltage-conducting plate and an inner groove. The upper outer wall of the inner groove is provided with a water-blocking part. The lower part of the inner groove is provided with a first inclined surface, and the bottom of the protective shell is provided with a second inclined surface.

[0007] Preferably, the insulating post is provided with a limiting step and an external threaded groove.

[0008] Preferably, the protective shell is provided with an internal threaded groove, which fits into the external threaded groove, so that the protective shell abuts against the limiting step and is connected and fixed to the insulating column.

[0009] Preferably, the inlet pipe has an inlet hole and communicates with the cavity, the inlet pipe has a bend so that the inlet hole is inclined, and a rubber post is provided at the entrance of the inlet hole, and the rubber post has a through hole.

[0010] Preferably, the water-blocking part is inclined.

[0011] Preferably, the inner groove is provided with a plurality of equally spaced heat dissipation holes.

[0012] Preferably, the detachable part is configured as an internal threaded groove.

[0013] Beneficial effects:

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This invention uses an inclined inlet pipe to prevent rainwater from entering the concave cavity along the wire, and a water-blocking part to prevent rainwater from dripping into the inner groove. When affected by wind, the water drips onto the inclined surface, and the first inclined surface causes the water to flow downwards quickly due to gravity, preventing water from accumulating in the inner groove and preventing rainwater from entering the concave cavity. The second inclined surface prevents rainwater from entering between the inner and outer thread grooves, preventing corrosion. Through the above structural design, the problems mentioned in the prior art are overcome, and the product has the advantage of waterproof function. Attached Figure Description

[0016] Figure 1 This is a side cross-sectional view of a low-voltage outdoor waterproof voltage transformer according to the present invention.

[0017] Figure 2 For this utility model Figure 1 A magnified view of a partial structure of a low-voltage outdoor waterproof voltage transformer (A).

[0018] Figure 3 This is a schematic diagram of the protective shell of a low-voltage outdoor waterproof voltage transformer according to the present invention;

[0019] The correspondence between the labels and component names in the attached figures is as follows:

[0020] Reference numerals in the attached drawings: 1. Transformer body; 2. Insulating column; 3. Conductive plate; 4. Protective shell; 5. Rubber column; 21. Limiting step; 22. External threaded groove; 41. Inlet pipe; 42. Cavity; 43. Internal groove; 44. Heat dissipation hole; 45. Water blocking part; 46. Internal threaded groove; 47. First inclined surface; 48. Second inclined surface; 411. Inlet hole; 412. Bending part; 51. Through hole. Detailed Implementation

[0021] 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.

[0022] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0023] In this embodiment of the utility model, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0024] Reference example Figures 1 to 3 A low-voltage outdoor waterproof voltage transformer includes a transformer body 1 and an insulating column 2 disposed on the transformer body 1. The insulating column 2 is provided with a voltage conducting plate 3 and a detachable protective shell 4. The protective shell 4 is provided with a plurality of inlet pipes 41 evenly distributed around a dot as the axis and inclined downward. The protective shell 4 is provided with a cavity 42 that can accommodate the voltage conducting plate 3. The protective shell 4 is provided with an inner groove 43. The upper outer wall of the inner groove 43 is provided with a water-blocking part 45. The lower part of the inner groove 43 is provided with a first inclined surface 47. The bottom of the protective shell 4 is provided with a second inclined surface 48. The second inclined surface 48 prevents rainwater from entering between the inner thread groove 46 and the outer thread groove 22, preventing corrosion and facilitating the removal of the protective shell 4 from the insulating column 2.

[0025] It is worth mentioning that the insulating post 2 is provided with a limiting step 21 and an external thread groove 22. The limiting step limits the distance that the connecting post of the conductive plate 3 can penetrate into the cavity and prevents the protective shell 4 from continuing to rotate.

[0026] It is worth mentioning that the protective shell 4 is provided with an internal threaded groove 46, which fits into the external threaded groove 22, so that the protective shell 4 abuts against the limiting step 21 and is connected and fixed to the insulating post 2;

[0027] It is worth mentioning that the inlet pipe 41 is provided with an inlet hole 411 and communicates with the cavity 42. The inlet pipe 41 is provided with a bend 412, so that the inlet hole 411 is set at an angle. A rubber column 5 is provided at the entrance of the inlet hole 411. The rubber column 5 is provided with a through hole 51. The wire passes through the through hole 51 and the inlet pipe 41 in sequence to enter the cavity 42. The rubber column 5 reduces the wear of the insulation layer of the wire and the protective shell 4. The bend 412 makes the inlet hole 411 tilt downward. The structure of the inlet pipe 41 also makes the wire bend once when entering the inlet hole 411. When rainwater flows along the wire to the entrance of the inlet hole 411, it will be blocked by the rubber column 5. The rainwater will stay at the bend of the wire and cannot go further.

[0028] It is worth mentioning that the water-blocking part 45 is inclined. When rainwater flows or drips onto the water-blocking part 45, the inclined design causes the rainwater to flow to the edge and drip onto the second inclined surface, preventing the dripping rainwater from splashing onto the inner groove 43, thereby preventing rainwater from entering the cavity 42 through the heat dissipation hole 44.

[0029] It is worth mentioning that the inner groove 43 is provided with several equally spaced heat dissipation holes 44. When the voltage plate 3 carries current and generates heat, the heat in the cavity 42 exchanges with the outside air through the heat dissipation holes 44, thereby controlling the temperature in the cavity 42 within a certain range. The inner groove 43 protects the heat dissipation holes 44 from the water-blocking part 45.

[0030] It is worth mentioning that the detachable feature is an internal threaded groove 46.

[0031] The above design scheme enables the product to have the advantage of waterproof function.

[0032] 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 low-voltage outdoor waterproof voltage transformer, comprising a transformer body (1), and an insulating column (2) arranged on the transformer body (1), wherein the insulating column (2) is provided with a conductive voltage plate (3), characterized in that: The insulating column (2) is provided with a detachable protective shell (4), the protective shell (4) is provided with a plurality of inlet pipes (41) evenly distributed around a dot as an axis and inclined downward, the protective shell (4) is provided with a cavity (42) capable of accommodating a conductive voltage plate (3), the protective shell (4) is provided with an inner groove (43), the upper outer wall of the inner groove (43) is provided with a water retaining portion (45), the lower part of the inner groove (43) is provided with a first inclined surface (47), and the bottom of the protective shell (4) is provided with a second inclined surface (48).

2. The low voltage outdoor waterproof voltage transformer according to claim 1, characterized in that: The insulating column (2) is provided with a limiting step (21), and the insulating column (2) is provided with an external thread groove (22).

3. The low voltage outdoor waterproof voltage transformer according to claim 2, characterized in that: The protective shell (4) is provided with an internal thread groove (46) and is engaged with the external thread groove (22), so that the protective shell (4) abuts against the limiting step (21) and is connected and fixed to the insulating column (2).

4. The low voltage outdoor waterproof voltage transformer according to claim 1, characterized in that: The wire inlet pipe (41) is provided with a wire inlet hole (411) and is in communication with the cavity (42). The wire inlet pipe (41) is provided with a bent portion (412) so that the wire inlet hole (411) is arranged in an inclined manner. A rubber column (5) is provided at the entrance of the wire inlet hole (411), and the rubber column (5) is provided with a through hole (51).

5. The low voltage outdoor waterproof voltage transformer according to claim 1, characterized in that: The water retaining portion (45) is arranged obliquely.

6. The low voltage outdoor waterproof voltage transformer according to claim 1, characterized in that: The inner groove (43) is provided with a plurality of heat dissipation holes (44) at equal intervals.

7. The low voltage outdoor waterproof voltage transformer according to claim 3, characterized in that: The detachable arrangement is an internal thread groove (46).

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