High-speed rail vehicle-mounted isolation transformer

Abstract

The utility model discloses a high-speed rail vehicle-mounted isolation transformer which comprises a transformer body and a box body, the transformer body is installed in the box body, a cover plate is arranged on the side face of the box body, and the cover plate faces the advancing direction of a high-speed rail. A hollow hole is formed in one side, away from the cover plate, of the box body; a hollow window is formed in the cover plate, a plurality of baffle plates are vertically arranged at the hollow window, and an S-shaped air inlet channel is defined by every two adjacent baffle plates. According to the vehicle-mounted isolation transformer, the hollow-out window and the hollow-out hole are formed in the advancing direction of the box body, the vertical baffle plate is installed at the hollow-out window, sand dust in air is intercepted through the baffle plate, the situation that a surface insulating layer of the isolation transformer is damaged due to sand dust impact is avoided, and the service life of the vehicle-mounted isolation transformer is prolonged; the bidirectional fan is installed on the side, away from the cover plate, of the box body, air cooling can be conducted on the isolation transformer in the parking state of the high-speed rail, reverse blowing can be conducted on sundries gathered on the baffle plates, and the cooling efficiency is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, and in particular to a high-speed railway vehicle-mounted isolation transformer. Background Art

[0002] An isolation transformer is a transformer with electrical isolation between its input and output windings. It provides isolation, voltage reduction, and filtering, and is widely used in power transmission and distribution facilities such as rail vehicles, high-rise buildings, airports, and tunnels. In high-speed rail power systems, onboard isolation transformers are essential safety measures. Currently, these transformers are typically suspended beneath the train, utilizing the wind for cooling during travel.

[0003] However, when the train is moving, external sand and dust will enter the isolation transformer box, damage the surface insulation of the isolation transformer, and cause the isolation transformer to malfunction; and installing a dustproof net will reduce the air flow rate and affect the heat dissipation of the isolation transformer.

[0004] Based on the above technical problems, the present application proposes a high-speed railway onboard isolation transformer. Utility Model Content

[0005] The purpose of this utility model is to provide a high-speed rail vehicle-mounted isolation transformer to solve the technical problems mentioned in the background technology. The purpose of this utility model is achieved through the following technical solutions:

[0006] A high-speed rail on-board isolation transformer includes a transformer body and a box body. The transformer body is installed in the box body. A cover plate is provided on the side of the box body, and the cover plate faces the travel direction of the high-speed rail. A hollow hole is provided on the side of the box body away from the cover plate. A hollow window is provided on the cover plate, and a plurality of baffles are vertically provided at the hollow window. Two adjacent baffles separate an S-shaped air inlet channel.

[0007] Furthermore, the air inlet channel includes an air inlet section, a deflection section and an air outlet section. The air outlet section is connected to the air inlet section through the deflection section, and the air outlet section is staggered with the air inlet section.

[0008] Furthermore, a horizontal baffle is fixed on the top of the deflector.

[0009] Furthermore, reinforcing ribs are provided between the baffles.

[0010] Furthermore, a bidirectional fan is provided on a side of the box away from the cover plate.

[0011] The technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0012] 1. By opening hollow windows and hollow holes in the direction of travel of the box, and installing vertical baffles at the hollow windows, the baffles are used to intercept sand and dust in the air to prevent the surface insulation layer of the isolation transformer from being damaged due to sand and dust impact, thereby extending the service life of the vehicle-mounted isolation transformer;

[0013] 2. By installing a bidirectional fan on the side of the box away from the cover, the isolation transformer can be cooled by air when the high-speed rail is stopped, and the debris accumulated on the baffle can be back-blown to ensure cooling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings in the specification, which constitute a part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0015] Figure 1 This is a schematic diagram of the front structure of an embodiment of the present application;

[0016] Figure 2 This is a cross-sectional view of the cover plate of an embodiment of the present application;

[0017] Figure 3 for Figure 2 A partial enlarged view of

[0018] Figure 4 This is a schematic diagram of the installation of the transformer body according to the embodiment of the present application;

[0019] Figure 5 This is a schematic diagram of the back structure of an embodiment of the present application.

[0020] Markings in the attached figure: 1. Box body; 11. Cover; 111. Hollow window; 12. Hollow hole; 2. Transformer body; 3. Bidirectional fan; 31. Wind cover; 32. Motor; 33. Blade; 4. Baffle; 41. Air inlet section; 42. Baffle section; 43. Air outlet section; 5. Reinforcement rib; 6. Horizontal baffle. DETAILED DESCRIPTION

[0021] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the drawings and specific implementation methods of the specification. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present utility model and its application or use. Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present utility model.

[0022] like Figure 1-5The illustrated example shows an isolation transformer mounted on a high-speed train, comprising a housing 1, a transformer body 2, and a bidirectional fan 3. The housing 1 is a rectangular stainless steel shell, with a cover plate 11 mounted on the front end. The cover plate 11 is bolted to the side of the housing 1 facing the direction of high-speed train travel.

[0023] like Figure 1-Figure 3 As shown, the cover plate 11 is provided with a rectangular hollow window 111. Several baffles 4 are vertically mounted at the hollow window 111. Adjacent baffles 4 define an air inlet channel with an S-shaped horizontal cross-section, which extends through the upper and lower ends of the channel. The air inlet channel comprises an air inlet section 41, a baffle section 42, and an air outlet section 43. The air outlet section 43 is connected to the air inlet section 41 through the baffle section 42. The air inlet section 41 is parallel to the air outlet section 43, and the baffle section 42 is inclined relative to the air inlet section 41 and the air outlet section 43, so that the air inlet section 41 and the air outlet section 43 are horizontally offset.

[0024] like Figure 1 、 Figure 3 As shown, two reinforcing ribs 5 are fixed between the front ends of the baffles 4. The two reinforcing ribs 5 are located in the middle and bottom of the baffles 4 respectively. The reinforcing ribs 5 connect the multiple baffles 4, thereby improving the stability of the baffles 4. A horizontal baffle 6 is fixed to the top of the baffle 4. The horizontal baffle 6 can prevent sand and dust from falling into the box body 1 from the top and also support and fix the top of the baffle 4.

[0025] like Figure 4 、 Figure 5 As shown, the transformer body 2 is installed in the box body 1. The back of the box body 1 is provided with a plurality of hollow holes 12 in an array. The hollow holes 12 are opposite the hollow windows 111. When the high-speed train is running, wind can pass through the baffles 4, enter the box body 1 through the hollow windows 111, and flow out through the hollow holes 12, thereby cooling the transformer body 2. The three coils of the transformer body 2 are placed parallel to the plane of the cover plate 11 to increase the windward area of the transformer body 2 and improve the cooling efficiency of the transformer body 2.

[0026] like Figure 5 As shown, the bidirectional fan 3 is installed on the back of the housing 1. The bidirectional fan 3 includes a fan cover 31, which is a hemispherical hollow structure and is fixed to the back of the housing 1 by bolts. A motor 32 is installed in the center of the fan cover 31, and the output shaft of the motor 32 extends into the fan cover 31. The blades 33 are fixed to the output shaft of the motor 32.

[0027] The working principle of the embodiment of this application is as follows:

[0028] When the high-speed train is in motion, air enters the housing 1 through the air inlet ducts between the baffles 4 and flows out through the hollow holes 12 on the back of the housing 1, dissipating heat generated by the transformer body and cooling the transformer body 2. Dust in the air slows down when it hits the baffles 4 and falls along them, preventing it from entering the housing 1.

[0029] When the high-speed train is stopped, the motor 32 is started to rotate the blades 33, allowing air to pass through the box 1 from front to back, cooling the transformer body 2. When the front surface of the baffle 4 is blocked by debris, affecting ventilation, the fan 32 is started to rotate the blades 33 in the opposite direction, blowing back the baffle 4 and removing the debris.

[0030] The technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0031] 1. By opening hollow windows and hollow holes in the direction of travel of the box, and installing vertical baffles at the hollow windows, the baffles are used to intercept sand and dust in the air to prevent the surface insulation layer of the isolation transformer from being damaged due to sand and dust impact, thereby extending the service life of the vehicle-mounted isolation transformer;

[0032] 2. By installing a bidirectional fan on the side of the box away from the cover, the isolation transformer can be cooled by air when the high-speed rail is stopped, and the debris accumulated on the baffle can be back-blown to ensure cooling efficiency.

[0033] In the description of the present invention, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention: the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0034] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A high-speed railway vehicle-mounted isolation transformer, characterized in that: It includes a transformer body and a box body, the transformer body is installed in the box body, a cover plate is provided on the side of the box body, and the cover plate faces the direction of travel of the high-speed rail; a hollow hole is provided on the side of the box body away from the cover plate; a hollow window is provided on the cover plate, and a number of baffles are vertically provided at the hollow window, and two adjacent baffles separate an S-shaped air inlet channel.

2. The high-speed railway vehicle-mounted isolation transformer according to claim 1, characterized in that: The air inlet channel includes an air inlet section, a deflection section and an air outlet section. The air outlet section is connected to the air inlet section through the deflection section, and the air outlet section is staggered with the air inlet section.

3. The high-speed railway vehicle-mounted isolation transformer according to claim 1, characterized in that: A horizontal baffle is fixed on the top of the baffle.

4. The high-speed railway vehicle-mounted isolation transformer according to claim 1, characterized in that: Reinforcement ribs are provided between the baffles.

5. The high-speed railway vehicle-mounted isolation transformer according to claim 1, characterized in that: A bidirectional fan is provided on one side of the box away from the cover plate.

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