CN101841085A - Improvement on copper-aluminum equipment wire clamp assembly and device and method thereof - Google Patents
Improvement on copper-aluminum equipment wire clamp assembly and device and method thereof Download PDFInfo
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- CN101841085A CN101841085A CN201010118724A CN201010118724A CN101841085A CN 101841085 A CN101841085 A CN 101841085A CN 201010118724 A CN201010118724 A CN 201010118724A CN 201010118724 A CN201010118724 A CN 201010118724A CN 101841085 A CN101841085 A CN 101841085A
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Abstract
The invention provides an improvement on a copper-aluminum equipment wire clamp assembly and a device and a method thereof. An improved copper equipment wire clamp and two copper-aluminum transition equipment gaskets form a set of assembly for matched use, wherein the improved copper equipment wire clamp is made of full-aluminum alloy, and two sides of a wire clamp body are provided with vertically upturned reinforcing ribs; and the two copper-aluminum transition equipment gaskets are compounded into a double-layer structure by a copper plate and an aluminum alloy plate, wherein the thickness of the copper plate is 1/4 to 1/3 total thickness of the gaskets, and the thickness of the aluminum alloy plate is 3/4 to 2/3 total thickness of the gaskets. The improvement on the device and the method is characterized in that in the two copper-aluminum transition equipment gaskets in the assembly, one surface of the copper plate is contacted with a copper terminal, and one surface of the aluminum plate is contacted with an aluminum equipment wire. The improvement saves a transition part of the traditional copper-aluminum equipment wire clamp, reforms a manufacturing process, eradicates the defect that the copper-aluminum equipment wire clamp is easy to break, and improves the reliability of power supply equipment and the reliability of power supply; and a process for manufacturing the copper-aluminum equipment wire clamp assembly is simple and saves a large amount of precious copper materials.
Description
Affiliated technical field
The present invention relates to a kind of wire clamp of copper-aluminum apparatus, especially the improvement of its structure and installation method thereof.
Background technology
At present, the outlet terminal of electric equipment commonly used has copper and the aluminium qualitative classification, and device clamp is used with the outlet terminal of bus downlead with electric equipment (as transformer, circuit breaker, instrument transformer, isolating switch, wall bushing etc.) and is connected.And lead-out wire mostly is aluminium stranded conductor or steel reinforced aluminium conductor, so device clamp is divided into aluminum equipment wire clamp and two series of copper-aluminium transition equipment cable clamp.The tie point of copper adopts copper to connect between converting equipment, and the tie point of aluminium adopts aluminium to connect, and will use copper-aluminium transition equipment cable clamp between the copper aluminium contact.
What electric power system was used in a large number is the 110kV copper-aluminium transition equipment cable clamp of flash welding, friction welding (FW), flash welding technology has been included national standard in, friction welding (FW) is widely used in the binding post manufacturing of 240mm2 with lower wire already, and the following device clamp of ampacity 1000A will adopt the soldering processes manufacturing.The product of technologies such as flash welding requires very strict during fabrication to technological parameter, there is potential destabilizing factor in the quality of product own, and the quality that copper and aluminium welding connects the interface is subjected to such environmental effects such as high temperature, vibrations fatigue, corrosion easily, and mechanical strength is reduced.All can cause product surface aging as salt fog, sour gas erosion and harsh weather, degree of oxidation is inconsistent, causes the product fracture.
According to data introduction and investigation; the welding performance of copper, aluminium (particularly aluminium) is relatively poor; even if the welding of same material generally all will take corresponding householder method could obtain intensity preferably, need use welding powder as brazing, the aluminium weldering needs to adopt to isolate welds (as Buchholz protection).And the transition junction of wire clamp of copper-aluminum apparatus is the welding of two kinds of different metals, and its production technology is if adopt flash welding or friction welding (FW), and the mechanical strength of its soldering opening can only reach the mechanical strength value of the aluminium that intensity is minimum in two kinds of mother metals in the ideal case.Owing to can not make the interface of two kinds of mother metals when welding, form " molten bath " fully and fully, the fusing point of aluminium is far below copper in addition, therefore, its crystalline phase tissue does not reach mutually fully " melting ", its microstructure is inhomogeneous, some crackle or crack even naked eyes get final product identification, thereby the mechanical strength reality of its interface often will be had a greatly reduced quality.Again because the welded section of copper-aluminium transition part is long-pending narrower, therefore, the object condition of this copper-aluminium transition equipment cable clamp inadequate natural endowment has just caused the tension that copper-aluminium transition partly locates, the main cause of bending resistance mechanical strength deficiency, device clamp should bear wire tension, also will bear shearing when installing and work, just rupture at the copper-aluminium transition weld easily; Secondly reason is that the heat cold removing comes throughout the year, outdoor climate variability, lead-in wire, device clamp are constantly expanded with heat and contract with cold, and the coefficient of expansion of aluminium and copper is different, objectively can worsen the stress condition of interface, under the effect of external carbuncle, device clamp generation mechanical fatigue also can be sent out fracture at weld in being subjected to for a long time; Because of loose contact, its connection interface resistance is big in addition, and temperature rise is big, long-term current overload operation, and the high temperature heating has produced couple corrosion, also causes the product fracture easily; In addition, equipment is in operation, and work moment acts on interface and causes stress to concentrate, thus the easier fatigue fracture that causes wire clamp, and because the mechanical strength of aluminium alloy is lower than copper, therefore physical rupture at first takes place generally to show as aluminium alloy.
It is very big to the safe operation harm of electrical network that fracture takes place copper-aluminium transition equipment cable clamp, gently then the separate unit distribution transforming has a power failure, heavy then whole piece circuit single-phase earthing, fault trip, cause category-A power grid accident, category-B power grid accident even large area blackout, so being one, it is easy to unheeded major safety risks, it is related to the security reliability of power supply unit, the reliability of power supply, is related to the local economy and the people's livelihood.
Summary of the invention
At this defective hidden danger and deficiency, the invention provides a kind of wire clamp of copper-aluminum apparatus group, the especially improvement of its structure and installation method thereof, it is formed a sleeve assembly by an improved aluminum equipment wire clamp and two copper-aluminium transition equipment packing rings and is used.Wherein the equipment of improved aluminum equipment wire clamp assembling end has been cancelled traditional copper-aluminium transition part, but directly make with all aluminium alloy, its outward appearance basic size all meets the standard of GB5273-1985, standard series size under the different nominal current conditions is arranged, it is characterized in that being shaped on the reinforcement of digging vertically upward in the both sides that the equipment assembling of aluminum equipment wire clamp body is held, do not hinder simultaneously the assembling of aluminum equipment wire clamp tension disc, it is to make simultaneously when the aluminum equipment wire clamp body is sheared punch process, operation is simple, however its tension, the bending resistance mechanical strength but is multiplied; In the wire clamp of copper-aluminum apparatus group, two copper-aluminium transition equipment packing rings are in order to the copper-aluminium transition part on the copper-aluminium transition equipment cable clamp that replaces the tradition use, it is characterized in that packing ring is double-decker by copper plate and aluminium alloy plate are compound, its outward appearance basic size all meets the standard of GB/T5286-2001, standard series size under the different nominal current conditions is also arranged, its outside diameter is between 12mm-200mm, diameter of bore is between 5mm-110mm, gross thickness is between 1.2mm-16mm, copper plate and aluminium alloy plate adopt explosion weld process compound, reformed the manufacturing process of traditional copper aluminium transition equipment cable clamp, in the middle of the composite bed that adopts this technology to weld distinct joint interface layer is arranged, it belongs to the crystal molecule melting layer, the bond strength height, contact resistance is little, electric conductivity is splendid, wherein the thickness of copper plate is packing ring gross thickness 1/4-1/3, the thickness of aluminium alloy plate is packing ring gross thickness 3/4-2/3, to reach mechanical strength and the electric property that neither influences the copper-aluminium transition equipment packing ring, can save a large amount of copper materials again, reduce material cost; Apparatus of the present invention method feature is must form a sleeve assembly with a full aluminum equipment wire clamp and two copper-aluminium transition equipment packing rings to be used, different according to installation method and version, aluminum equipment wire clamp among the present invention also is divided into compression-type and screw bolt-type, it is different with installation electric equipment terminal angulation that the wire clamp of every kind of form is pressed downlead again, is divided into 0 °, 45 °, 30 °, 90 ° four kinds.Usually electric equipment is (as transformer, circuit breaker, instrument transformer, isolating switch, drop switch etc.) outlet terminal is copper coin, the tension disc of aluminum equipment wire clamp relies on common stove bolt assembly and aluminum equipment wire clamp body that aluminium stranded conductor (or steel reinforced aluminium conductor) is fastenedly connected formation downlead part during use, aluminum equipment wire clamp body equipment assembling end is all aluminium alloy system, the through hole that has above on a through hole and the equipment outlet terminal matches, rely on another Steel Bolt (or copper bolt) to pass a copper-aluminium transition equipment packing ring through hole among the present invention earlier, inferiorly pass the through hole that aluminum equipment wire clamp and equipment outlet terminal are matching, pass the copper-aluminium transition equipment packing ring through hole among another the present invention again, and the steel nut (or copper nut) of screwing on closely links together device clamp and equipment outlet terminal, so just constituted apparatus of the present invention.It should be noted that: in the assembling up and down two copper-aluminium transition equipment packing rings must be copper plate one side contacts with equipment copper coin terminal, the one side of aluminium alloy plate contacts with aluminum equipment wire clamp, so just the part of the copper-aluminium transition in the former normally used copper-aluminium transition equipment cable clamp is transferred to dexterously all good aluminum equipment wire clamp end position of a mechanical strength and electric property, and traditional copper-aluminium transition equipment cable clamp can be eliminated.
The invention has the beneficial effects as follows: make copper-aluminium transition type device clamp generation phenomenon of rupture obtain eradicating, effectively guaranteed the safe operation of network system, the reliability of power supply unit and the reliability of power supply have been improved greatly, and the copper-aluminium transition equipment packing ring manufacturing process among the present invention is simple, saved the copper material of a large amount of preciousnesses, its economic benefit and social benefit are fairly obvious.
The invention will be further described below in conjunction with drawings and Examples.
Description of drawings
Fig. 1 is the front view of the copper-aluminium transition equipment cable clamp device embodiment of traditional former typing.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is the front view of the improved aluminum equipment wire clamp device of the present invention embodiment.
Fig. 4 is the vertical view of Fig. 3.
Fig. 5 is the front view of the copper-aluminium transition equipment packing ring among the present invention.
Fig. 6 be Fig. 5 vertically to cutaway view.
Fig. 7 is the front view of another outdoor embodiment of the improved wire clamp of copper-aluminum apparatus device of the present invention.
Fig. 8 is the front view of the present invention with the improved device embodiment of former aluminum equipment wire clamp.
Among the figure 1, the device clamp body, 2, copper-aluminium transition part, 3, the equipment of wire clamp assembling end, 4, steel (or copper) bolt assembly, 5, tension disc, 6, downlead, 7, equipment outlet terminal, 8, reinforcement, 9, the transition reinforcement, 10, the copper plate composite bed of copper-aluminium transition equipment packing ring, 11, the aluminium alloy plate composite bed of copper-aluminium transition equipment packing ring, 12, boundary layer, 13, through hole, 14, this contact level of device clamp, 15, thin layer conductive paste, 16, common stove bolt assembly, 17, the downlead expansion loop,, 18, magnetic insulation isolates and to copy.
Embodiment
The copper-aluminium transition equipment cable clamp of former typing is divided into screw bolt-type and compression-type two classes by version and installation method traditionally, and wire clamp is pressed downlead with arrangement terminal angulation difference, have be divided into, 45 °, 30 °, 90 ° four kinds.At accompanying drawing 1, in 2, illustrate the embodiment of 0 ° of copper-aluminium transition equipment cable clamp device of traditional screw bolt-type: device clamp body (1) is made with aluminium alloy, its equipment assembling end (3) here is made of copper, so that contact with equipment outlet terminal (7) coupling that copper becomes, link to each other with electric equipment by steel (or copper) bolt assembly (4), downlead (6) generally all is aluminium stranded conductor or steel reinforced aluminium conductor, the tension disc that it is made by aluminium alloy (5) is pressed in device clamp body (1) the downlead end of aluminum, rely on four common stove bolt assemblies (16) to be clamped, link to each other with bus again, traditional wire clamp of copper-aluminum apparatus is to be connected as a single entity with the equipment assembling end (3) that the device clamp body (1) that the welding procedure of flash welding or friction welding (FW) is made aluminium alloy becomes with copper, so just formed copper-aluminium transition part (2) at the middle part of wire clamp of copper-aluminum apparatus body (1), its welded section is narrow, the mechanical strength of soldering opening is relatively poor, it is also relatively poor to cross electrical property, is the copper-aluminium transition equipment cable clamp part that ruptures easily.
Accompanying drawing 5, Fig. 6 is the signal of the copper-aluminium transition equipment packing ring among the present invention: the outward appearance basic size of copper-aluminium transition equipment packing ring all meets the standard of GB/T5286-2001 among the figure, one through hole (13) is arranged in the middle of the packing ring, it has the standard series size under the different nominal current conditions, its outside diameter is between 12mm-200mm, diameter of bore is between 5mm-110mm, gross thickness is between 1.2mm-16mm, to be packing ring by copper plate and aluminium alloy plate adopt feature that explosion weld process is compound to be double-decker, distinct joint interface layer (12) is arranged in the middle of the composite bed of welding, it belongs to the crystal molecule melting layer, bond strength is high, contact resistance is very little, electric conductivity is splendid, the thinner thickness of copper plate composite bed (10) wherein, be the 1/4-1/3 of packing ring gross thickness, and the thickness of aluminium alloy plate composite bed (11) is thicker, be the 3/4-2/3 of packing ring gross thickness, to reach mechanical strength and the electric property that neither influences the copper-aluminium transition equipment packing ring, can save a large amount of copper materials again.
Accompanying drawing 3, Fig. 4 is the signal of the improved aluminum equipment wire clamp device of the present invention embodiment, it is characterized in that being shaped on the reinforcement of digging vertically upward (8) in the both sides that the equipment assembling of aluminum equipment wire clamp body (1) is held, its height of digging is 1.1-1.5 a times of aluminum equipment wire clamp body (1) aluminium plate thickness, it is to be made of simultaneously when shearing punch process aluminum equipment wire clamp body, operation is simple, and both sides reinforcement (8) the transition reinforcement (9) of ining succession is progressively received little, it does not hinder the assembling of aluminum equipment wire clamp tension disc (5), yet its tension, the bending resistance mechanical strength but is multiplied, the one side that two copper-aluminium transition equipment packing rings must be copper plates in the assembling contacts with equipment copper coin terminal, the copper plate composite bed (10) of copper-aluminium transition equipment packing ring contact with equipment outlet terminal (7) (Fig. 4) promptly, and the one side of aluminium alloy plate should contact with aluminum equipment wire clamp, the aluminium alloy plate composite bed (11) of copper-aluminium transition equipment packing ring contacts (Fig. 4) with aluminum equipment wire clamp body (1) promptly, so just the copper-aluminium transition in the copper-aluminium transition equipment cable clamp that uses in the tradition is partly transferred to dexterously a mechanical strength and electric property all on the appropriate position of good aluminum equipment wire clamp.In order to obtain better power delivery effect, all scribbling thin layer conductive paste (15) between the contact-making surface of steel (or copper) bolt (4) and two copper-aluminium transition equipment packing rings or between downlead (6) and tension disc (5) and aluminum equipment wire clamp body (1) phase-contact surface.
Fig. 7 is the signal of another outdoor embodiment of the improved wire clamp of copper-aluminum apparatus device of the present invention, it is characterized in that: downlead (6) changes to some extent at fit on, a magnetic insulation that to be it repeat to pass before being clamped by tension disc (5) and aluminum equipment wire clamp body (1) is isolated and is copied (18) and curve a downlead expansion loop (17), the magnetic insulation isolation is copied and is shaped on the through hole that two internal diameters are slightly larger than downlead (6) external diameter on (18), it copies downlead versatilely as copying son, guarantee that device clamp is being subjected to external force or is expanding with heat and contract with cold to alleviate deformation when producing stress, guarantee again that simultaneously downlead (6) is not subjected to the influence of strong wind and rocks, its is with order gram out of doors, circuit breaker, effective especially on the isolating switch.
Fig. 8 is the signal of the present invention with the improved device embodiment of former aluminum equipment wire clamp, it is characterized in that: directly adopt former conventional aluminium device clamp, on this contact level of aluminum equipment wire clamp (14), there is not reinforcement (8), its use that needs to match with two copper-aluminium transition equipment packing rings among the present invention, be used on the indoor stressed less electric equipment, its security performance and electric conductivity are in the same actively useful effect of the present invention that reaches aspect the copper-aluminium transition.
Claims (6)
1. the improvement of its installation method of wire clamp of copper-aluminum apparatus group, it is characterized in that: it is made up of an improved aluminum equipment wire clamp and two copper-aluminium transition equipment packing rings, improved aluminum equipment wire clamp is made with all aluminium alloy, be shaped on the reinforcement of digging vertically upward in the wire clip body both sides, its height of digging of reinforcement is 1.1-1.5 a times of aluminum equipment wire clamp body (1) aluminium plate thickness, it is double-decker that two copper-aluminium transition equipment packing rings adopt explosion weld process compound by copper plate and aluminium alloy plate, distinct joint interface layer is arranged in the middle of the composite bed, wherein the thickness of copper plate is the 1/4-1/3 of packing ring gross thickness, the thickness of aluminium alloy plate is the 3/4-2/3 of packing ring gross thickness, the one side that two copper-aluminium transition equipment packing rings must be copper coins when device used contacts with copper tip, and the one side of aluminium sheet contacts with aluminum equipment wire clamp.
2. the improvement of a kind of its installation method of wire clamp of copper-aluminum apparatus group according to claim 1, it is characterized in that: improved aluminum equipment wire clamp is divided into compression-type and screw bolt-type, it is different with installation electric equipment terminal angulation that the wire clamp of every kind of form is pressed downlead again, be divided into 0 °, 45 °, 30 °, 90 ° four kinds, its outward appearance basic size all meets the standard of GB5273-1985, and the standard series size under the different nominal current conditions is arranged.
3. the improvement of a kind of its installation method of wire clamp of copper-aluminum apparatus group according to claim 1, it is characterized in that: two its overall dimensions of copper-aluminium transition equipment packing ring all meet the standard of GB5273-1985, standard series size under the different nominal current conditions is arranged, its outside diameter is between 12mm-200mm, diameter of bore is between 5mm-110mm, and gross thickness is between 1.2mm-16mm.
4. the improvement of a kind of its installation method of wire clamp of copper-aluminum apparatus group according to claim 1, it is characterized in that: the tension disc of improved aluminum equipment wire clamp relies on four common stove bolt assemblies and aluminum equipment wire clamp body that aluminium stranded conductor (or steel reinforced aluminium conductor) is fastenedly connected formation downlead part, the through hole that has on a through hole and the equipment outlet terminal above the equipment assembling end of aluminum equipment wire clamp body matches, rely on another Steel Bolt (or copper bolt) to pass a copper-aluminium transition equipment packing ring through hole earlier, inferiorly pass the through hole that aluminum equipment wire clamp and equipment outlet terminal are matching, pass another copper-aluminium transition equipment packing ring through hole again, and the steel nut (or copper nut) of screwing on closely links together device clamp and equipment outlet terminal, copper-aluminium transition in traditional copper-aluminium transition equipment cable clamp is partly transferred to all good postmedian positions of aluminum equipment wire clamp of a mechanical strength and electric property, constitute the improvement of this installation method thus.
5. the improvement of a kind of its installation method of wire clamp of copper-aluminum apparatus group according to claim 1, it is characterized in that downlead (6) has another embodiment on assembly method, a magnetic insulation that to be downlead (6) repeat to pass before being clamped by tension disc (5) and aluminum equipment wire clamp body (1) is isolated and is copied (18) and curve a downlead expansion loop (17), the magnetic insulation isolation is copied and is shaped on the through hole that two internal diameters are slightly larger than downlead (6) external diameter on (18), can copy downlead versatilely as copying son.
6. the improvement of a kind of its installation method of wire clamp of copper-aluminum apparatus group according to claim 1, it is characterized in that: directly adopt former conventional aluminium device clamp, on this contact level of aluminum equipment wire clamp (14), there is not reinforcement (8), its use that needs to match with two copper-aluminium transition equipment packing rings among the present invention constitutes another embodiment of this installation method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010118724A CN101841085A (en) | 2010-02-02 | 2010-02-02 | Improvement on copper-aluminum equipment wire clamp assembly and device and method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010118724A CN101841085A (en) | 2010-02-02 | 2010-02-02 | Improvement on copper-aluminum equipment wire clamp assembly and device and method thereof |
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| CN101841085A true CN101841085A (en) | 2010-09-22 |
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| CN201010118724A Pending CN101841085A (en) | 2010-02-02 | 2010-02-02 | Improvement on copper-aluminum equipment wire clamp assembly and device and method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102709719A (en) * | 2012-05-28 | 2012-10-03 | 江苏省电力公司检修分公司 | Lap-joint type copper-aluminum transition wire clip |
| CN102759645A (en) * | 2011-04-25 | 2012-10-31 | 湖北省电力公司随州供电公司 | Voltage wired copper-aluminum wiring clamp of electric meter provided with current transformer |
| CN102760516A (en) * | 2012-07-05 | 2012-10-31 | 中国石油天然气股份有限公司 | Application and preparation method of copper-aluminum transitional composite connecting bar and multistage composite connecting bar |
| CN103151624A (en) * | 2013-03-07 | 2013-06-12 | 河南省电力公司驻马店供电公司 | Connecting clamp of distribution transformer bushing lead screw rod and line wire |
| CN105633607A (en) * | 2014-11-07 | 2016-06-01 | 江苏嘉盟电力设备有限公司 | Line connection device used for street lamp |
| CN106816724A (en) * | 2017-03-29 | 2017-06-09 | 国网山东省电力公司威海市文登区供电公司 | The wire clamp of copper-aluminum apparatus and its angle adjusting method of a kind of angle variable |
| CN108305812A (en) * | 2018-02-01 | 2018-07-20 | 贵州电网有限责任公司 | The novel dismountable low pressure isolation switch for changing safety plate |
| CN109301533A (en) * | 2018-11-12 | 2019-02-01 | 国网新疆电力有限公司博尔塔拉供电公司 | Anti-fracture Transition wire clip |
-
2010
- 2010-02-02 CN CN201010118724A patent/CN101841085A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102759645A (en) * | 2011-04-25 | 2012-10-31 | 湖北省电力公司随州供电公司 | Voltage wired copper-aluminum wiring clamp of electric meter provided with current transformer |
| CN102709719A (en) * | 2012-05-28 | 2012-10-03 | 江苏省电力公司检修分公司 | Lap-joint type copper-aluminum transition wire clip |
| CN102709719B (en) * | 2012-05-28 | 2015-11-18 | 国家电网公司 | A kind of lap jointing type copper-aluminium transition wire clip |
| CN102760516A (en) * | 2012-07-05 | 2012-10-31 | 中国石油天然气股份有限公司 | Application and preparation method of copper-aluminum transitional composite connecting bar and multistage composite connecting bar |
| CN103151624A (en) * | 2013-03-07 | 2013-06-12 | 河南省电力公司驻马店供电公司 | Connecting clamp of distribution transformer bushing lead screw rod and line wire |
| CN105633607A (en) * | 2014-11-07 | 2016-06-01 | 江苏嘉盟电力设备有限公司 | Line connection device used for street lamp |
| CN106816724A (en) * | 2017-03-29 | 2017-06-09 | 国网山东省电力公司威海市文登区供电公司 | The wire clamp of copper-aluminum apparatus and its angle adjusting method of a kind of angle variable |
| CN108305812A (en) * | 2018-02-01 | 2018-07-20 | 贵州电网有限责任公司 | The novel dismountable low pressure isolation switch for changing safety plate |
| CN109301533A (en) * | 2018-11-12 | 2019-02-01 | 国网新疆电力有限公司博尔塔拉供电公司 | Anti-fracture Transition wire clip |
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Application publication date: 20100922 |