Split type hoisting type transformer

Abstract

The utility model relates to the technical field of transformers, in particular to a split type hoisting type transformer. The utility model provides a split type hoisting transformer which comprises a box body for accommodating an iron core, the box body adopts a split type arrangement mode of combining an upper box body and a lower box body, the iron core is fixedly arranged in the lower box body, the upper box body is arranged right above the lower box body and is connected with the lower box body through a detachable bolt, and the lower box body is arranged right above the upper box body and is connected with the lower box body through a detachable bolt. A high-voltage terminal and a low-voltage terminal are respectively arranged on two sides of the upper box body; due to the fact that the upper box body and the lower box body which are arranged in a split mode are designed for the transformer, deformation-preventing independent hoisting operation can be carried out on the iron core with the lower box body, short-distance connection operation can be carried out on the high-voltage terminal and the low-voltage terminal which are provided with the upper box body and the iron core winding, and therefore the transformer can be assembled and disassembled conveniently. The transformer solves the problems that a box cover of a transformer in the prior art is easy to deform during hoisting due to large dead weight of an iron core, and the insulating property is reduced due to the fact that a wire end of the iron core is too long and is easy to abut against a box wall.

Description

Technical Field

[0001] This application relates to the technical field of transformers, and particularly to a split-type hoisting transformer. Background Art

[0002] In the power system, a transformer is a key device for voltage transformation and power transmission; the traditional transformer design usually includes a box body and a box cover, and this design has many limitations when facing a heavy iron core; especially during the hoisting process, due to the large weight of the iron core, the box cover is prone to physical deformation, which may not only cause structural damage, but also affect the performance and safety of the transformer.

[0003] In addition, the high-voltage terminals and low-voltage terminals are usually arranged on the upper part of the box cover, which makes it necessary to reserve too long wire ends on the upper part of the iron core for connection with the high-voltage terminals and low-voltage terminals before the box cover can be closed. As a result, the too long wire ends are prone to contact with the iron core clamping parts or the box wall inside the transformer, thus affecting the insulation performance of the iron core. Summary of the Utility Model

[0004] The problem to be solved by this application is that the existing transformer not only easily causes the box cover to deform during hoisting due to the large self-weight of the iron core, but also the wire ends of the iron core are too long and prone to contact with the box wall, resulting in a reduction in insulation performance due to the arrangement of the high- and low-voltage terminals on the upper part of the box cover.

[0005] To solve the above technical problems, this application provides a split-type hoisting transformer, which includes a box body for accommodating the iron core. The box body adopts a split arrangement of an upper box body and a lower box body. The iron core is fixedly arranged inside the lower box body. The upper box body is arranged directly above the lower box body and is connected to it by detachable bolts. High-voltage terminals and low-voltage terminals are respectively arranged on both sides of the upper box body.

[0006] Since the transformer of this application designs a split upper box body and lower box body, it can not only perform independent hoisting operations to prevent deformation of the iron core with the lower box body, but also perform short-distance connection operations between the high-voltage terminals and low-voltage terminals with the upper box body and the iron core winding, solving the problems that the existing transformer not only easily causes the box cover to deform during hoisting due to the large self-weight of the iron core, but also the wire ends of the iron core are too long and prone to contact with the box wall, resulting in a reduction in insulation performance due to the arrangement of the high- and low-voltage terminals on the upper part of the box cover. Description of the Drawings

[0007] Figure 1 It is a schematic three-dimensional structure diagram of the embodiment.

[0008] Figure 2 It is a schematic front view structure diagram of the embodiment.

[0009] Figure 3 Schematic side view structure of the embodiment.

[0010] Figure 4 Schematic top view structure of the embodiment.

[0011] Figure 5 Schematic rear view structure of the embodiment.

[0012] In the figure: 1. Box cover; 2. Upper box body; 3. Lower box body; 4. Breather; 5. Filling port; 6. Lifting lug; 7. Heat sink; 8. Low-voltage terminal; 9. Channel steel; 10. High-voltage terminal. Specific implementation manner

[0013] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application. Embodiment

[0014] The present application relates to a split-type hoisting transformer, as Figures 1-5 shown, the transformer includes a box body for accommodating the iron core. In order to reduce the deformation of the box body during hoisting caused by the large self-weight of the iron core, therefore, the box body adopts a split layout method combining the upper box body 2 and the lower box body 3. The iron core is fixedly arranged inside the lower box body 3, and lifting lugs 6 for facilitating hoisting operations are arranged around the outside of the lower box body 3. Thus, according to the self-weight of the iron core, it is possible to choose to hoist the iron core or the lower box body 3 with the iron core installed. In order to avoid the lower box body 3 being easily worn or corroded when placed above the ground, therefore, channel steels 9 for lifting and supporting off the ground are symmetrically arranged at the lower part of the lower box body 3.

[0015] The upper box body 2 is arranged directly above the lower box body 3 and is connected to it by detachable bolts. In order to facilitate the connection between the high- and low-voltage terminals 8 and the iron core, and at the same time shorten the length of the winding joints for connecting the iron core, therefore, the high-voltage terminal 10 and the low-voltage terminal 8 are distributed on both sides of the upper box body 2, and a box cover 1 detachably connected to it is arranged at the top. Thus, when the upper box body 2 is placed on the upper part of the lower box body 3, the operator can reach between the upper box body 2 and the lower box body 3 along the position of the box cover 1 to perform the connection operations between the high-voltage terminal 10, the low-voltage terminal 8 and the iron core. After the connection is completed, the box cover 1 and the upper box body 2 are hermetically connected. In this way, the wiring length between the high- and low-voltage terminals 8 and the iron core can be effectively shortened, and the redundant wire length is prevented from abutting against the box wall or the iron core.

[0016] During the operation of the transformer, a relatively large amount of heat is generated in its internal iron core. Therefore, the internal iron core of the box body is usually soaked with insulating oil for heat dissipation. In order to improve the heat dissipation capacity of the insulating oil, heat sinks 7 for the flow and heat dissipation of the insulating oil can be added to the side of the box body. The heat sinks 7 are respectively connected to the upper box body 2 and the lower box body 3 through flanges, so that the insulating oil inside the box body can enter the heat sinks 7 to increase the contact area with the outside air, and then the heat of the insulating oil can be taken away by the flow of the outside air, realizing the auxiliary cooling operation of the insulating oil.

[0017] In order to make the pressure inside the transformer tend to be stable, a breather 4 communicating with the outside atmosphere is added to the upper part of the box cover 1, so as to achieve the pressure balance inside and outside the transformer through the breather 4. A filling port 5 for adding insulating oil is also arranged at the center of the upper part of the box cover 1.

[0018] During use, first place the iron core inside the lower box body 3, and then perform the hoisting and installation operation on the lower box body 3 with the iron core. After the lower box body 3 is fixed, then sleeve the upper box body 2 with high-voltage terminals 10 and low-voltage terminals 8 directly above the lower box body 3, and then connect the two through bolts. At this time, the box cover 1 is not installed yet. The operator reaches into the space between the upper box body 2 and the lower box body 3 through the position of the box cover 1, and then connects the winding joints of the iron core to the high-voltage terminals 10 and the low-voltage terminals 8 respectively (the high-voltage terminal 10 is connected to the high-voltage winding joint, and the low-voltage terminal 8 is connected to the low-voltage winding joint). Then connect the heat sinks 7 to the side walls of the upper box body 2 and the lower box body 3 respectively. Then inject insulating oil into the box body to submerge the iron core, and then connect the box cover 1 to the upper box body 2. In this way, the assembly operation of the transformer is completed. This can not only avoid the problem that the self-weight of the iron core is large, and hoisting the whole transformer is likely to cause deformation of the box cover 1 or the box body, but also arrange the high-voltage terminals 10 and the low-voltage terminals 8 on the side of the upper box body 2. After the connection between the high- and low-voltage terminals 8 and the windings of the iron core is completed and then the box cover 1 is installed, it can effectively shorten the wire length of the joints of the iron core windings and avoid the redundant wires of the joints from contacting the inner wall of the box body or the iron core.

[0019] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part depending on the context, the term "one or more" used in the text can be used to describe any feature, structure or property with a singular meaning, or can be used to describe a combination of features, structures or properties with a plural meaning. Similarly, at least in part depending on the context, terms such as "a" or "the" can also be understood as conveying singular usage or conveying plural usage.

[0020] It should be easily understood that the terms "on", "above", and "over" in this disclosure should be interpreted in the broadest manner, such that "on" not only means "directly on something", but also includes the meaning of "on something" with intermediate features or layers therebetween, and "above" or "over" not only includes the meaning of "above" or "over something", but may also include the meaning of "above" or "over something" with no intermediate features or layers therebetween (i.e., directly on something).

[0021] In addition, for ease of description, spatial relative terms may be used in the text, such as "below", "beneath", "under", "above", "upper", etc., to describe the relationship of one element or feature to other elements or features as shown in the figures. Spatial relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the figures. The device may have other orientations (rotated 90 degrees or at other orientations), and the spatial relative descriptive terms used in the text may be interpreted accordingly as well.

[0022] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A split type hoisting transformer, comprising a box for accommodating an iron core, characterized in that: The box body adopts a split layout combining an upper box body and a lower box body. The iron core is fixedly arranged inside the lower box body. The upper box body is arranged directly above the lower box body and connected to it by detachable bolts. High-voltage terminals and low-voltage terminals are arranged on both sides of the upper box body.

2. The split-type hoisting transformer according to claim 1 is characterized in that: A box cover detachably connected to the upper box body is arranged on the top of the upper box body.

3. The split-type hoisting transformer according to claim 1 is characterized in that: The inside of the box is filled with insulating oil for immersing the iron core to dissipate heat.

4. The split-type hoisting transformer according to claim 3 is characterized in that: The side of the box body is provided with a heat sink for the insulating oil to flow and dissipate heat. The heat sink is connected to the upper box body and the lower box body through flanges.

5. The split-type hoisting transformer according to claim 2 is characterized in that: A respirator connected to the outside atmosphere is arranged on the upper part of the box cover.

6. The split-type hoisting transformer according to claim 2 is characterized in that: A filling port for adding insulating oil is also arranged in the center of the upper part of the box cover.

7. The split-type hoisting transformer according to claim 1 is characterized in that: Lifting ears are arranged around the outside of the lower box body to facilitate lifting operations.

8. The split-type hoisting transformer according to claim 1, characterized in that: Channel steels for supporting the ground are symmetrically arranged at the lower part of the lower box body.

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