A multiple sealed voltage transformer for a locomotive

Abstract

The utility model relates to a voltage transformer technical field, and its purpose lies in providing a kind of multiple sealing voltage transformer for locomotive, including primary outgoing line A end, secondary wiring slot, secondary outgoing line end and installation insert, and the insulator capable of realizing 360 ° rotation is tightly matched and installed on primary outgoing line A end, window cover plate is provided at the window of secondary wiring slot, sealing gasket is additionally installed below window cover plate, and window cover plate is fixedly installed on the window of secondary wiring slot by lead seal screw at four corners, and all right-angle fillets of installation insert are milled and flattened and are processed angle fillets.The utility model solves the technical problem of poor installation adaptability of traditional fixed insulation structure, has the outstanding advantages such as high installation flexibility, convenient maintenance, etc., simultaneously, through the sealing structure design and installation insert structure of optimization, the long-term reliability of voltage transformer in train head and other outdoor severe environment is significantly improved, and service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of voltage transformer technology, and in particular to a multi-sealed voltage transformer for locomotives. Background Technology

[0002] Voltage transformers are electrical devices that convert high voltage to low voltage and are widely used in power systems. Locomotives also require dedicated voltage transformers for voltage measurement and conversion. However, traditional locomotive voltage transformers have several problems: First, their insulation structure is mostly fixed, resulting in poor installation adaptability and difficulty in connecting to high-voltage power sources in different locations; second, because they are installed on the exterior of the locomotive, they are exposed to the outdoor environment for extended periods, making them susceptible to corrosion from dust, moisture, and oil, affecting their reliability and service life; third, the metal parts and epoxy resin mixture are prone to cracking during temperature fluctuations, reducing product stability. Utility Model Content

[0003] The purpose of this invention is to provide a multi-sealed voltage transformer for locomotives to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A multi-sealed voltage transformer for locomotives includes a primary output terminal A, a secondary wiring slot, a secondary output terminal, and a mounting insert. An insulator capable of 360° rotation is tightly fitted onto the primary output terminal A and connected to a high-voltage power supply. A window cover is provided at the window of the secondary wiring slot, with a sealing gasket installed below the cover. The window cover is fixed to the window of the secondary wiring slot by lead-sealed screws at its four corners. All right angles and milled corners of the mounting insert are rounded.

[0005] The insulator is equipped with a fuse.

[0006] A screw is provided at the position where the primary outgoing line A connects to the insulator. The screw is used to tighten and fix the insulator in place.

[0007] The window cover is made of stainless steel.

[0008] The sealing gasket is made of soft silicone.

[0009] The secondary output terminal is equipped with an IP67-rated waterproof connector to seal the output wire.

[0010] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are: This invention solves the problem of poor installation adaptability of traditional fixed insulation structures by setting a 360-degree rotatable insulator and integrating a fuse protection device at the A end of the primary output line. It offers high installation flexibility and convenient maintenance. At the same time, the sealing structure design of the secondary wiring groove and the waterproof joint design of the secondary output line significantly improve the sealing performance of the voltage transformer in harsh outdoor environments, thereby enhancing long-term reliability. In addition, the structural optimization of the mounting insert increases the contact area with the epoxy resin mixture, reducing the probability of cracking and extending the product's service life. Attached Figure Description

[0011] Figure 1 This is a front view of an embodiment of the present utility model.

[0012] Figure 2 This is a side view of an embodiment of the present utility model.

[0013] Figure 3 This is a top view of an embodiment of the present utility model.

[0014] Figure 4 This is a schematic diagram of the structure before the installation of the insert in this embodiment of the utility model.

[0015] Figure 5 This is a schematic diagram of the optimized structure after installing the insert in an embodiment of this utility model.

[0016] Figure 6 This is a schematic diagram of the secondary outlet groove sealing in an embodiment of this utility model.

[0017] Attached Figures and Their Names: 1. Insulator; 2. Fuse Tube; 3. Primary Outgoing Line A Terminal; 4. Mounting Insert; 5. Mounting Base Plate; 6. Grounding Terminal; 7. Sealing Gasket; 8. High Voltage Power Supply Connection Terminal; 9. Screw; 10. Secondary Outgoing Line a Terminal; 11. Connecting Plate; 12. Window Cover Plate; 13. Transformer Body Grounding Terminal; 14. Primary Outgoing Line N Terminal; 15. Secondary Outgoing Line n Terminal; 16. Lifting Ring; 17. Waterproof Connector; 18. Lead Seal Screw. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0020] like Figure 1-3 As shown, this utility model discloses a multi-sealed voltage transformer for locomotives, comprising a primary output A terminal 3, a mounting insert 4, a mounting base plate 5, a grounding terminal 6, a sealing gasket 7, a high-voltage power supply connection terminal 8, a screw 9, a secondary output a terminal 10, a connecting piece 11, a window cover plate 12, a transformer body grounding terminal 13, a primary output N terminal 14, a secondary output n terminal 15, and a lifting ring 16. The primary output A terminal 3 is connected to a 360° rotatable insulator 1, which allows adjustment of the primary output direction to connect to high-voltage power supplies in different locations. The insulator 1 contains a fuse 2, which melts and trips in a very short time when responding to a fault current, quickly cutting off the circuit and preventing serious damage to the product and lines from the fault current. The insulator 1 and the primary output A terminal 3 are tightly fitted together and secured in place by the screw 9. When in use, rotate insulator 1 to a suitable angle according to the location of the high voltage power supply, and then tighten it with screw 9 to achieve a reliable connection. When a fault current occurs, the fuse tube 2 inside insulator 1 will quickly melt and cut off the circuit.

[0021] like Figure 6 As shown, it also includes a secondary wiring trough. The window of the secondary wiring trough is provided with a window cover plate 12. The window cover plate 12 is made of stainless steel. A soft silicone sealing gasket 7 is installed under the window cover plate 12 and is pressed and sealed by four lead-sealing screws 18 to ensure that dust, water vapor and oil stains cannot enter.

[0022] The secondary output terminal is equipped with an IP67-rated waterproof connector 17 to seal the lead wire and prevent external contaminants from entering, corroding the output terminal components, and causing poor contact.

[0023] like Figure 4-5 As shown, due to the different heat transfer effects between the metal parts and the epoxy resin mixture, cracking is likely to occur during alternating hot and cold periods. This increases the contact area between the mounting insert 4 and the epoxy resin mixture. To address this, all right angles of the mounting insert 4 are rounded to R2, and the milled corners of the mounting insert 4 are rounded to R5. This increases the contact area between the metal parts and the epoxy resin mixture, reducing the likelihood of cracking. Furthermore, the mounting insert 4 is rotated and its angle adjusted during assembly to increase the thickness of the epoxy resin mixture and prevent cracking.

Claims

1. A multi-sealed voltage transformer for locomotives, characterized in that: It includes a primary output A end (3), a secondary wiring groove, a secondary output end, and an installation insert (4); an insulator (1) capable of 360° rotation is tightly fitted on the primary output A end (3), and the insulator (1) is connected to the high-voltage power supply; a window cover plate (12) is provided at the window of the secondary wiring groove, and a sealing gasket (7) is installed below the window cover plate (12). The window cover plate (12) is fixedly installed on the window of the secondary wiring groove by lead-sealing screws (18) at the four corners; all right angles and milled flat corners of the installation insert (4) are rounded.

2. A multiple sealed voltage transformer for a locomotive as set forth in claim 1, wherein: The insulator (1) is equipped with a fuse (2).

3. A multiple sealed voltage transformer for a locomotive as set forth in claim 1, wherein: A screw (9) is provided at the position where the primary outgoing line A end (3) is connected to the insulator (1). The screw (9) is used to tighten and fix the insulator (1).

4. A multiple sealed voltage transformer for a locomotive as set forth in claim 1, wherein: The window cover (12) is made of stainless steel.

5. A multiple sealed voltage transformer for a locomotive as set forth in claim 1, wherein: The sealing gasket (7) is made of soft silicone.

6. A multiple sealed voltage transformer for a locomotive as set forth in claim 1, wherein: The secondary output terminal is equipped with a waterproof connector (17) with an IP67 protection rating to seal the output wire.

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