CN219739332U - Novel copper-aluminum transition integrated connecting terminal - Google Patents
Novel copper-aluminum transition integrated connecting terminal Download PDFInfo
- Publication number
- CN219739332U CN219739332U CN202321020158.6U CN202321020158U CN219739332U CN 219739332 U CN219739332 U CN 219739332U CN 202321020158 U CN202321020158 U CN 202321020158U CN 219739332 U CN219739332 U CN 219739332U
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- Prior art keywords
- aluminum
- copper
- terminal
- transition piece
- aluminum transition
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- 230000007704 transition Effects 0.000 title claims abstract description 49
- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 title claims abstract description 48
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 45
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 42
- 230000000149 penetrating effect Effects 0.000 claims abstract description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- 239000004411 aluminium Substances 0.000 claims description 3
- 238000002788 crimping Methods 0.000 abstract description 4
- 230000020169 heat generation Effects 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 description 8
- 238000010276 construction Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 230000008602 contraction Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000004080 punching Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 238000004451 qualitative analysis Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Landscapes
- Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
Abstract
The utility model discloses a novel copper-aluminum transition integrated connection terminal, a wire and an aluminum terminal which is fixed at one end of the wire in a crimping way, wherein a copper-aluminum transition piece is arranged on the aluminum terminal, and through holes penetrating through the aluminum terminal and the copper-aluminum transition piece are formed in the aluminum terminal and the copper-aluminum transition piece; the device has simple structure, the aluminum terminal and the copper-aluminum transition piece are directly fixed and connected into a whole, and the problem of gaps between the aluminum terminal and the copper-aluminum transition piece caused by insecurity of bolts can be avoided; the heat generation rate of the copper-aluminum transition terminal can be effectively reduced, and the operation safety of the distribution network is improved.
Description
Technical Field
The utility model relates to the technical field of high-voltage switches, in particular to a novel copper-aluminum transition integrated connecting terminal.
Background
With the rapid development of social economy, the social electricity consumption is increased year by year. In order to meet the requirements of electricity reliability and load increase, the distribution network adopts a hand-in-hand power supply mode, and the quantity of distribution network equipment is greatly improved while the quantity of power supply points is increased. The equipment wire clamp is a connecting terminal of a wire and power equipment, and in actual use, a heating fault phenomenon often occurs, so that how to reduce the heating fault rate and improve the operation reliability of the distribution network becomes an important subject for the research of the distribution network field.
At present, the heating problem of the equipment wire clamp is widely paid attention to by practitioners in the power field, but most of related researches are oriented to the main network side, only qualitative analysis is carried out on heating phenomena, preventive measures and the like, and quantitative researches are carried out in the absence of related data;
the equipment wire clamp is often faced with various different operation conditions when in use, and the conditions such as current change, environmental weather change and the like lead to frequent fluctuation of the temperature of the equipment wire clamp, and repeated expansion and contraction are caused. The thermal expansion coefficient of copper metal is 17.7X10-6/DEG C, the thermal expansion coefficient of aluminum metal is 23×10-6/DEG C, and the difference of the copper metal and the aluminum metal causes different deformation of the two materials in the repeated thermal expansion and contraction processes, so that gaps are generated at the connecting positions to enable air to enter, the resistance is increased, and the equipment wire clamp heats. Meanwhile, as aluminum metal has creep property, deformation can be generated after long service time, and a copper-aluminum gap can be enlarged, so that the equipment wire clamp generates heat.
The lap joint of the drainage plate of the power equipment and the equipment wire clamp is fastened by adopting a double-hole bolt. Once the fastening is improper, when equipment is operated for a long time and is influenced by aspects such as wind blowing vibration, thermal expansion and contraction of bolts, corrosion and the like, the fastening bolts can loosen to lead to the reduction of the contact pressure between the drainage plate and the equipment wire clamp, the contact resistance is increased, and the heating hidden trouble is formed. The bolt gasket is used as an auxiliary iron piece and is easy to ignore, constructors can use the bolt gasket at will, and once the bolt gasket is used, the corrosion of the wire clamp can be caused.
The problem of heat generation caused by uneven field construction process cannot be solved.
The aluminum terminal is matched with the copper-aluminum transition piece, needs to be subjected to secondary punching processing, and has higher requirements on installation and construction processes; and moreover, the copper-aluminum transition piece is connected with the isolating switch only through bolts, so that when the construction process is not standard or the isolating switch is used for a long time, a gap is easily generated between the copper-aluminum transition piece and the isolating switch, the contact resistance is increased, and the terminal is heated. The hidden trouble exists in the safe operation of the distribution network.
Disclosure of Invention
The utility model aims to provide a novel copper-aluminum transition integrated connecting terminal so as to solve the problems in the background technology.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
a novel copper aluminum transition integrated connection terminal, comprising:
the aluminum terminal is provided with a copper-aluminum transition piece, and through holes penetrating through the aluminum terminal and the copper-aluminum transition piece are formed in the aluminum terminal and the copper-aluminum transition piece.
Preferably, the aluminum terminal is provided with a clamping groove matched with the outer contour of the copper-aluminum transition piece.
Preferably, the copper-aluminum transition piece is mounted on the aluminum terminal through a bolt assembly, or the copper-aluminum transition piece is welded and fixed on the aluminum terminal, or the copper-aluminum transition piece is pressed and fixed on the aluminum terminal.
Preferably, friction grooves are uniformly formed in the side wall of the copper-aluminum transition piece around the through hole.
Compared with the prior art, the utility model has the beneficial effects that:
the device has simple structure, the aluminum terminal and the copper-aluminum transition piece are directly connected into a whole, and the lead and the aluminum terminal are connected into a whole before leaving the factory, so that the problem of gaps caused by unstable connection of the lead and the aluminum terminal due to irregular operation in site construction can be avoided; the heat generation rate of the copper-aluminum transition terminal can be effectively reduced, and the operation safety of the distribution network is improved;
the crimping between the lead and the aluminum terminal and the punching of the copper-aluminum transition piece are directly completed by manufacturers, so that the standardization of the installation and construction process can be well ensured, and the heating problem of the copper-aluminum transition connection terminal is solved at the source.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the structure of the present utility model before assembly;
FIG. 2 is a schematic diagram of the assembled structure of the present utility model;
FIG. 3 is a schematic view of the structure of the copper-aluminum transition piece of the utility model.
1. A wire; 2. an aluminum terminal; 22. a clamping groove; 3. copper-aluminum transition piece.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
According to the characteristics of the copper-aluminum transition performance, the advantages and the disadvantages of the various types of equipment clamps and the like, and in combination with the temperature rise test results, the comparison results of the various types of equipment clamps are summarized as shown in the following table:
according to the comparison, the aluminum terminal is matched with the copper-aluminum transition piece, so that the aluminum terminal has better copper-aluminum transition performance, the structure is simple and reliable, a bolt-free structure is arranged between the aluminum terminal and the lead, the problem of bolt loosening is avoided, heating is generated, and the aluminum terminal is better in performance in a temperature rise test. Compared with a hot tinned copper terminal, the hot tinned copper terminal is more suitable for outdoor humid environment and has lower cost. Therefore, the method can be preferentially recommended to be used in the distribution network electrical equipment on the premise of standardizing the construction process.
From the above analysis, although the aluminum terminal is better applicable in cooperation with the copper-aluminum transition piece, the aluminum terminal has a certain problem, and the problem of frequent heating of the equipment wire clamp cannot be completely solved. For example, the copper-aluminum transition piece is required to be subjected to secondary punching processing, the aluminum terminal and the lead are also required to be connected through crimping, and the requirements on field installation and construction technology are high; moreover, the aluminum terminal, the copper-aluminum transition piece and the isolating switch are connected through bolts, so that gaps are easy to generate after long-time use, and the contact resistance is increased.
Examples:
as shown in fig. 1-3:
one end of the lead 1 is directly connected with the aluminum terminal 2 by crimping and fixing into a whole by a manufacturer before leaving the factory, the copper-aluminum transition piece 3 is welded/crimped/fixed on the aluminum terminal 2 by using a bolt, and at the moment, the through hole of the aluminum terminal 2 is just aligned with the through hole of the copper-aluminum transition piece 3.
The aluminum terminal 2 is provided with the clamping groove 22, the shape of the clamping groove 22 is matched with the outline of the copper-aluminum transition piece 3, and the alignment of the through holes when the copper-aluminum transition piece 3 is welded/pressed with the aluminum terminal 2 is facilitated;
through evenly offer the friction groove around the through-hole of aluminium face/copper face at copper aluminium transition piece 3, the friction groove can play the locking effect with the cooperation of outside antiskid anti-loosening belt pad nut, improves and presss from both sides tight fixed effect. Friction grooves may be formed uniformly around the through holes of the aluminum terminals 2.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the utility model disclosed above are intended only to assist in the explanation of the utility model. The preferred embodiments are not exhaustive or to limit the utility model to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best understand and utilize the utility model. The utility model is limited only by the claims and the full scope and equivalents thereof.
Claims (2)
1. Novel copper aluminium transition integrated connection terminal, its characterized in that: comprising the following steps:
the aluminum terminal (2) is provided with a copper-aluminum transition piece (3), and through holes penetrating through each other are formed in the aluminum terminal (2) and the copper-aluminum transition piece (3);
a clamping groove (22) which is matched with the outer contour of the copper-aluminum transition piece (3) is formed in the aluminum terminal (2);
friction grooves are uniformly formed in the side wall of the copper-aluminum transition piece (3) around the through hole.
2. The novel copper-aluminum transition integrated connection terminal according to claim 1, wherein: the copper-aluminum transition piece (3) is installed on the aluminum terminal (2) through the bolt assembly, or the copper-aluminum transition piece (3) is welded and fixed on the aluminum terminal (2), or the copper-aluminum transition piece (3) is pressed and fixed on the aluminum terminal (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321020158.6U CN219739332U (en) | 2023-04-28 | 2023-04-28 | Novel copper-aluminum transition integrated connecting terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321020158.6U CN219739332U (en) | 2023-04-28 | 2023-04-28 | Novel copper-aluminum transition integrated connecting terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219739332U true CN219739332U (en) | 2023-09-22 |
Family
ID=88025356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321020158.6U Active CN219739332U (en) | 2023-04-28 | 2023-04-28 | Novel copper-aluminum transition integrated connecting terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219739332U (en) |
-
2023
- 2023-04-28 CN CN202321020158.6U patent/CN219739332U/en active Active
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