A transformer two-bend output device

Abstract

This application relates to the field of transformer technology, and more specifically, to a transformer two-bend outlet device, comprising: an equalizing tube and an equalizing ball disposed on the equalizing tube, wherein the equalizing tube has a segmented structure and includes: two or more equalizing tube bodies; and a reversing tube body disposed between adjacent equalizing tube bodies, capable of adjusting the angle between adjacent equalizing tube bodies; wherein the equalizing ball is disposed on the outermost equalizing tube body. This application enables multi-directional adjustable connections with transformer coils and external bushings in a compact space, adapting to special customer needs, saving installation time, and facilitating subsequent transportation.

Description

Technical Field

[0001] This utility model relates to the field of transformer technology, and more specifically, to a two-bend output device for a transformer. Background Technology

[0002] Existing outgoing line devices have always used L-shaped or straight cylindrical voltage equalization pipe systems due to cost and technical reasons. When facing special or compact transformers that require two-bend directional connection, multiple sections need to be spliced, and sufficient insulation space and more voltage equalization pipes and other materials are required, which results in the outgoing line device requiring a large placement space. Utility Model Content

[0003] The main objective of this invention is to propose a more compact, more insulating, and integrated two-bend reversing cable outlet device.

[0004] To solve the above-mentioned technical problems, this utility model proposes a transformer two-bend outlet device, comprising: an equalizing pipe and an equalizing ball disposed on the equalizing pipe, characterized in that the equalizing pipe has a segmented structure and includes: The equalizing pipe body has two or more components; And a deflector tube, which is set between adjacent equalizing tubes, can adjust the angle between adjacent equalizing tubes; Among them, the two outermost equalizing tubes have a first connection end and a second connection end at their two ends, respectively. The first connection end is used to connect to the transformer coil, and the second connection end is used to connect to the equalizing ball.

[0005] In the above technical solution, the deflector body further includes: a flexible metal connector and a paper-formed component disposed on the surface of the flexible metal connector.

[0006] In any of the above technical solutions, the number of equalizing pipes is 3 and the number of deflecting pipes is 2, so that the equalizing pipe has a two-bend structure.

[0007] In any of the above technical solutions, the equalizing tube body further comprises, from the inside out, a metal tube, a bottom insulating layer, a first insulating cylinder, and a second insulating cylinder; The bottom insulating layer covers the surface of the metal tube, and there is a gap between the bottom insulating layer and the first insulating cylinder, which are connected by the first supporting member; there is a gap between the first insulating cylinder and the second insulating cylinder, which are connected by the second supporting member.

[0008] In any of the above technical solutions, the first layer support and the second layer support are both strip-shaped structures and extend along the length of the equalizing pipe body. There are multiple first layer support and second layer support, which are arranged in the circumferential direction.

[0009] Beneficial effects: Compared with the prior art, this application can realize multi-directional adjustable connection of transformer coils and external bushings in a compact space, which can meet the special needs of customers, save installation time, and facilitate subsequent transportation. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the internal structure of the equalizing tube of this utility model.

[0012] The annotations in the attached figures are explained as follows: 1. Equalizing pipe; 11. Equalizing pipe body; 111. Metal pipe; 112. Bottom insulation layer; 113. First insulation cylinder; 114. Second insulation cylinder; 115. First support component; 116. Second support component; 12. Directional pipe body; 101. First connecting end; 102. Second connecting end; 2. Equalizing ball. Detailed Implementation

[0013] Hereinafter, exemplary embodiments according to this application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely a part of the embodiments of this application, and not all of the embodiments of this application. It should be understood that this application is not limited to the exemplary embodiments described herein. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0014] It should be noted that, as shown in this application and claims, unless the context clearly indicates otherwise, the words "a," "an," "an," and / or "the" do not specifically refer to the singular and may also include the plural. Generally speaking, the terms "comprising" and "including" only indicate the inclusion of explicitly identified steps and elements, and these steps and elements do not constitute an exclusive list; the method or apparatus may also include other steps or elements.

[0015] If the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0016] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0017] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0018] Traditional outgoing line devices are functional, but their large size requires more operating space during on-site installation; they also cannot achieve a seamless two-bend reversal connection, limiting their application scenarios. Furthermore, traditional outgoing line devices need to be removed from the transformer tank for separate transport, increasing costs and increasing the risk of moisture damage, deformation, and foreign object ingress, significantly reducing performance and lifespan. Improper handling during transport can also pose risks to later operation. Therefore, this invention proposes an outgoing line device with a more compact structure, stronger insulation, and the ability to achieve a seamless two-bend reversal.

[0019] The transformer two-bend output device of this application will be described in detail below through the following embodiments.

[0020] Example 1: like Figures 1-2As shown, this embodiment proposes a transformer two-bend outlet device, including: a voltage equalization pipe 1 and a voltage equalization ball 2 disposed on the voltage equalization pipe 1; The equalizing pipe 1 has a segmented structure and includes: equalizing pipe body 11, having two or more; and deflecting pipe body 12, disposed between adjacent equalizing pipe bodies 11, capable of adjusting the angle between adjacent equalizing pipe bodies 11. The two outermost equalizing tubes 11 have a first connecting end 101 and a second connecting end 102 at their two ends, respectively. The first connecting end 101 is used to connect to the transformer coil, and the second connecting end 102 is used to connect to the equalizing ball 2.

[0021] Install this product into the transformer according to the installation method of the outgoing line device. Connect the first connection terminal 101 to the transformer coil, and extend the transformer coil lead wire from the first connection terminal 101, and pass through the equalizing tube body 11 and the deflecting bend tube in sequence, and then reach the position of the equalizing ball 2. Finally, the equalizing ball 2 is connected to the external bushing.

[0022] This product features a segmented structure for the equalizing pipe 1, incorporating a reversing pipe body 12. The reversing pipe body 12 allows the entire equalizing pipe 1 to bend, thus enabling a reversible connection between the transformer coil leads and the external bushing. During installation, the direction can be adjusted according to the actual situation, changing the angles of the two outermost equalizing pipe bodies 11. This allows for multi-directional adjustable connections with the transformer coil and external bushing within a compact space, meeting specific customer needs, saving installation time, and facilitating subsequent transportation.

[0023] It should be noted that there are 3 equalizing tubes 11 and 2 reversing tubes 12, making the equalizing tube 1 have a two-bend structure. Since the entire outgoing line device only needs to be connected to the transformer coil and the external bushing, it is only necessary to change the position of the two ends of the device. For this purpose, two reversing tubes 12 are set up to make the equalizing tube 1 have a two-bend structure to achieve this effect.

[0024] The deflecting bend 12 is an adjustable-angle bend structure, comprising: a flexible metal connector and a paper-formed component disposed on the surface of the flexible metal connector. The flexible metal connector is designed to undergo elastic or plastic deformation under stress while maintaining structural integrity and functionality. It is a flexible metal tube made of high-strength aluminum alloy or copper alloy material, such as a corrugated metal tube or braided metal hose. A paper-formed component is then laid on its surface. This paper-formed component is made of high-strength and highly insulating paper material to ensure its stability and reliability during long-term operation.

[0025] By adopting the above scheme, it can be matched with the adjacent equalizing pipe body 11 at multiple angles. After determining the angle to be used on site, the combined angle between them can be flexibly adjusted. This design allows the transformer's two-bend outgoing line device to freely and flexibly adjust the layout of the equalizing pipe body under different installation conditions to adapt to the structural requirements of different transformers.

[0026] It should be noted that the flexible metal connector has good electrical conductivity and heat resistance. Its metal exterior is also equipped with a bottom insulating layer and an insulating cylinder to ensure the safe operation of the entire device under high pressure.

[0027] In addition, the two ends of the directional pipe body 12 are provided with overlapping structures, which are connected to the adjacent equalizing pipe body 11 by overlapping, so as to achieve structural stability and angle adjustment. This connection method not only facilitates installation and maintenance, but also ensures that the components are closely matched and electrically connected during angle adjustment.

[0028] It should be noted that the entire outgoing line device can be placed inside the transformer tank as a whole. Compared with traditional outgoing line devices, due to the optimized structure, the volume of existing outgoing line devices on the market is greatly reduced, by about 55%, which also helps to reduce the volume of the transformer tank, reducing the space occupied by the transformer tank by more than 32%.

[0029] It should be noted that the outgoing line device of this application can be applied to 300-550kV AC power transformers.

[0030] Example 2: This embodiment is a further improvement based on Embodiment 1.

[0031] like Figure 2 As shown, in this embodiment, the equalizing tube 11 includes, from the inside out, a metal tube 111, a bottom insulating layer 112, a first insulating cylinder 113, and a second insulating cylinder 114. The bottom insulating layer 112 covers the surface of the metal tube 111, and there is a gap between the bottom insulating layer 112 and the first insulating cylinder 113, which are connected by the first support member 115; there is a gap between the first insulating cylinder 113 and the second insulating cylinder 114, which are connected by the second support member 116.

[0032] It should be noted that both the first layer support member 115 and the second layer support member 116 are strip-shaped structures and extend along the length of the equalizing pipe body 11. There are multiple first layer support members 115 and second layer support members 116, which are arranged in the circumferential direction.

[0033] The metal tube 111 serves as the main structure, with a bottom insulating layer 112 wrapped around its outer side. Two or more insulating cylinders are then mounted on the bottom insulating layer 112. Supports are provided between each insulating cylinder and an adjacent bottom insulating layer 112, or between two adjacent insulating cylinders. These supports fit well with the insulating layers, ensuring structural stability, convenient installation and connection, and improved support strength.

[0034] It should be noted that the use of T4 laminated paperboard with excellent insulation properties and wet-molded parts enables the support components to adapt to complex electric field environments, improving the reliability and safety of the outgoing line device. The product can be directly assembled into the transformer tank without the need for an additional riser, and it is smaller in size and has higher mechanical strength, making on-site installation more convenient for customers.

[0035] The various embodiments of this disclosure have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A transformer two-bend outlet device, comprising: The equalizing tube (1) and the equalizing ball (2) disposed on the equalizing tube (1) are characterized in that the equalizing tube (1) has a segmented structure and includes: The equalizing tube body (11) has two or more parts; And a deflector tube (12), which is disposed between adjacent equalizing tubes (11) and can adjust the angle between adjacent equalizing tubes (11); Among them, the two outermost equalizing tubes (11) have a first connection end (101) and a second connection end (102) at their two ends respectively. The first connection end (101) is used to connect the transformer coil, and the second connection end (102) is used to connect to the equalizing ball (2).

2. The transformer two-bend lead arrangement of claim 1, wherein, The deflector body (12) includes: a flexible metal connector and a paper-formed part disposed on the surface of the flexible metal connector.

3. The transformer two-bend lead arrangement of claim 1, wherein, The number of equalizing pipes (11) is 3, and the number of deflecting pipes (12) is 2, so that the equalizing pipe (1) has a two-bend structure.

4. The transformer two-bend lead arrangement of claim 1, wherein, The equalizing tube body (11) includes, from the inside out, a metal tube (111), a bottom insulating layer (112), a first insulating cylinder (113), and a second insulating cylinder (114). The bottom insulating layer (112) covers the surface of the metal tube (111), and there is a gap between the bottom insulating layer (112) and the first insulating cylinder (113), which are connected by the first support member (115); there is a gap between the first insulating cylinder (113) and the second insulating cylinder (114), which are connected by the second support member (116).

5. The transformer two-bend lead arrangement of claim 4 wherein, Both the first layer support member (115) and the second layer support member (116) are strip-shaped structures and extend along the length direction of the equalizing pipe body (11). There are multiple first layer support members (115) and second layer support members (116) and they are arranged in the circumferential direction.

Images