Device for opening gap between outgoing copper bar and iron core of low-voltage coil
By using a combination device of strap pads and bolts between the low-voltage coil and the iron core, the problems of insulation damage and poor heat dissipation during the assembly process in the prior art are solved, and better heat dissipation effect and assembly stability are achieved, reducing the The cost.
Patent Information
- Application Number
- CN202420795945.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-17
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-04-17
AI Technical Summary
The assembly process of the strap between the low-voltage coil and the core gap in the prior art is prone to damage the insulation, is not tight and is prone to tilt, resulting in poor heat dissipation of the transformer and unstable transportation, which increases costs.
A device including a strap pad and a bolt is adopted, and the strap pad is penetrated through the strap pad and fixed to the low-pressure coil to form an air duct to improve the heat dissipation effect, and to enhance stability through the symmetric distribution of multiple nylon bolts.
It effectively reduces the temperature rise of the coil, improves the appearance and stability of the assembly, avoids insulation damage and transportation drop problems, and saves materials.
Smart Images
Figure CN222281734U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of transformers, in particular to a device for expanding the gap between a low-voltage coil outlet copper bar and an iron core. Background Art
[0002] The temperature rise of dry-type transformers has always been an important factor affecting the overall cost of transformers. How to reduce the temperature rise while saving materials is a major problem we need to overcome. In the past, the process required that the gap between the copper bar and the core column in the low-voltage coil be close to each other or filled with fillers, and the hottest place of the low-voltage coil when the transformer is running is generally concentrated on the upper end of the copper bar of the low-voltage coil. This structure is not conducive to the heat dissipation of the low-voltage coil. A large number of product tests have proved that an airway is reserved between the gap between the copper bar and the core column in the low-voltage coil, which increases the heat dissipation area at the copper bar, effectively reducing the temperature rise of the entire coil by about 3 to 5K.
[0003] In the prior art, a stay is often used to place a spacing between the low-voltage coil copper bar and the iron core column. However, after the transformer is assembled, the stay is inserted from the upper end of the iron core between the low-voltage inner copper bar and the iron core. During the assembly process, the outer insulation of the iron core column is easily scratched, causing a short circuit in the transformer. In addition, the lower part of the stay is in a suspended state, which is not tightly supported and is easy to tilt. The transformer is more likely to fall off after bumpy transportation, and it is not beautiful. Utility Model Content
[0004] The purpose of the utility model is to provide a device for expanding the gap between the copper bar and the iron core of a low-voltage coil outlet line, so as to solve the above-mentioned problems existing in the prior art.
[0005] Technical solution: A device for propping up the gap between the copper bar and the iron core of a low-voltage coil outlet line, comprising two components: a support pad and a bolt. The support pad has a predetermined operating length and supporting force, and can perform corresponding load-bearing and position-limiting operations. The bolt is connected to the support pad, has a predetermined operating length, passes through the support pad, and can perform corresponding position-limiting operations.
[0006] In a further embodiment, the working surface of the support pad is provided with corresponding through holes, and the bolts pass through the support pad through the through holes provided in the support pad; and the bolts and the support pad are provided with multiple through holes.
[0007] In a further embodiment, the bolts are nylon bolts, and a plurality of the bolts are symmetrically distributed on the working surface of the support pad, with a predetermined working distance between the plurality of the bolts.
[0008] Beneficial effects: The utility model relates to a device for propping up the gap between the copper bar of the low-voltage coil outlet and the iron core, and relates to the technical field of transformers, including a support pad and a bolt. The support pad has a predetermined working length and supporting force, and can perform corresponding load-bearing and position-limiting operations. The bolt is connected to the support pad, has a predetermined working length, passes through the support pad, and can perform corresponding position-limiting operations. During assembly, a threaded hole for fixing the support pad is opened on the copper bar of the low-voltage coil outlet. After the low-voltage coil is wound into a finished product, the support pad is fixed to the copper bar of the low-voltage line outlet by bolts and becomes one with the low-voltage coil, and then assembled into a finished dry-type transformer. A heat dissipation airway is supported by the support pad between the copper bar and the iron core column of the low-voltage coil, which is conducive to air circulation and reduces the temperature rise of the coil. It not only improves the process appearance, but also saves costs more effectively. At the same time, it also avoids the problem that the transformer is more likely to fall off after bumpy transportation. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 It is an adaptation diagram of this application.
[0010] Figure 2 It is a schematic diagram of the support pad described in this application.
[0011] Figure 3 It is a schematic diagram of the bolt described in this application.
[0012] The reference numerals in the figures are: support pad 1, bolt 2. DETAILED DESCRIPTION
[0013] In the following description, a large number of specific details are given to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the utility model, some technical features known in the art are not described.
[0014] Embodiment 1:
[0015] The device for propping up the gap between the copper bar and the iron core of the low-voltage coil outlet proposed in this embodiment includes two components: a support pad 1 and a bolt 2. The support pad 1 has a predetermined operating length and supporting force, and can perform corresponding load-bearing and limiting operations. The bolt 2 is connected to the support pad 1, has a predetermined operating length, passes through the support pad 1, and can perform corresponding limiting operations. In the later operation process, the gap between the copper bar and the iron core of the low-voltage coil can be propped up by the cooperation of the support pad 1 and the bolt 2, which can facilitate air circulation and reduce the temperature rise of the coil. The working surface of the support pad 1 is provided with corresponding through holes, and the bolt 2 passes through the support pad 1 through the through holes provided in the support pad 1; and the bolt 2 and the support pad 1 are both provided with multiple through holes. The number of through holes provided on the working surface of the support pad 1 is adapted to the number of the bolts 2. In a further preferred embodiment, two through holes are provided on the working surface of the support pad 1 and are adapted to accommodate two of the bolts 2. In the later operation process, the two bolts 2 respectively pass through the support pad 1.
[0016] Embodiment 2:
[0017] On the basis of the first embodiment, the bolt 2 is a nylon bolt 2, and a plurality of the bolts 2 are symmetrically distributed on the working surface of the support pad 1, and a predetermined working distance is left between the plurality of the bolts 2. In the later operation process, a corresponding threaded hole for fixing the support pad 1 can be first opened at a predetermined position on the copper bar of the low-voltage coil outlet line, and the threaded holes are multiple and sequentially distributed at different positions on the working surface of the copper bar of the low-voltage coil outlet line. After the low-voltage coil is made into a finished product, the support pad 1 (insulating material) is fixed to the copper bar of the low-voltage coil outlet line through the bolt 2 (nylon bolt 2, insulating material) to become one with the low-voltage coil, and then assembled into a finished dry-type transformer. The support pad 1 supports a heat dissipation airway between the copper bar and the iron core of the low-voltage coil to facilitate air circulation and reduce the temperature rise of the coil. It not only improves the appearance of the process, but also avoids the problem of easily scratching the outer insulation of the core column during assembly. At the same time, since there are multiple support pads 1, which are placed in sections at different positions of the outgoing copper busbar in the low-voltage coil, the working position can be flexibly adjusted according to actual needs, thereby avoiding the problems of loose support, easy tilting, and easier falling of the transformer after bumpy transportation.
[0018] As described above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be interpreted as limiting the present invention itself. Various changes can be made to it in form and detail without departing from the spirit and scope of the present invention defined in the appended claims.
Claims
1. A device for expanding the gap between the copper bar and the iron core of a low-voltage coil outlet, characterized in that include: The stay pad has a predetermined operating length and supporting force, and can perform corresponding load-bearing and position-limiting operations; The bolt is connected to the support pad and has a predetermined operating length. The bolt passes through the support pad and can perform corresponding limiting operations.
2. The device for expanding the gap between the copper bar and the iron core of a low-voltage coil outlet according to claim 1, characterized in that: The working surface of the support pad is provided with corresponding through holes, and the bolts pass through the support pad through the through holes provided in the support pad; and the bolts and the support pad are provided with multiple through holes.
3. The device for expanding the gap between the copper bar and the iron core of a low-voltage coil outlet according to claim 2, characterized in that: The bolts are nylon bolts, and a plurality of the bolts are symmetrically distributed on the working surface of the support pad, with a predetermined working distance between the plurality of bolts.