CN207888057U - A kind of copper-aluminium joint explosion welding apparatus used for transmission line - Google Patents
A kind of copper-aluminium joint explosion welding apparatus used for transmission line Download PDFInfo
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- CN207888057U CN207888057U CN201820155612.1U CN201820155612U CN207888057U CN 207888057 U CN207888057 U CN 207888057U CN 201820155612 U CN201820155612 U CN 201820155612U CN 207888057 U CN207888057 U CN 207888057U
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- pure aluminum
- aluminum tube
- copper
- red copper
- copper bar
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Abstract
The utility model is related to copper-aluminium joint explosion welding apparatus used for transmission line,Effectively solve the production of copper-aluminium joint,Ensure product quality,The problem of meeting copper-aluminium joint used for transmission line,Red copper bar is vertically mounted at steel base upper end,And it stretches into the center for the pure aluminum tube for being placed in steel wire support center,Pure aluminum tube upper oral part is equipped with copper gasket seal,It is supported equipped with upper gap between red copper bar upper end and fine aluminium inside pipe wall,Pure aluminum tube lower end inner wall and stretching between the base outer wall in pure aluminum tube is supported equipped with lower gap,Steel wire support is fitted with the medicine frame of periphery vertically upward,Blasting explosive for explosion welding is filled in medicine frame,Pure aluminum tube is vertically arranged in medicine frame center,Plane is more than above copper gasket seal on explosive,Center position is vertically equipped with the detonator for stretching out plane on explosive above copper gasket seal,The utility model is simple in structure,Novel and unique,Easy to operate,Soldering effect is good,Good product quality,It is at low cost,It reduces environmental pollution.
Description
Technical field
The utility model is related to electrical, especially a kind of copper-aluminium joint explosion welding apparatus used for transmission line.
Background technology
Power transmission line pipeline connector it is compound, have that resistance value is low, intensity especially in high voltage, high current transmission line of electricity
High and the good copper-aluminium joint of anti-fatigue performance connection is essential, and power industry is that national economy and society is supported to send out
The infrastructural industries of exhibition, with the fast development of Chinese national economy, industrialization, the quickening of Development of China's Urbanization, to electric power according to
Bad degree is also higher and higher.In order to reduce transmission of electricity energy consumption, long range high voltage power transmission also has become reality, and China 1100kV is straight at present
Stream transmission of electricity project is also in nervous construction.It is transmitting electricity in power transformation, can often encounter copper bar, aluminium row, copper aluminum steel cable, terminals
Electrical connection problem between son, if interface both sides are copper aluminum metals with different melting point, slit clearance space will produce space
Electric discharge phenomena, differential of the arc sparklet can be such that aluminium face aoxidizes, and generate the high aluminium oxide of resistance, melt until tie point aluminium interface and break
It opens.Therefore the quality of copper-aluminium joint is related to the stability of transmission of electricity and efficiently using for energy.
Metallic explosive welding is in a specific explosive-explosion-metal system, and the chemical energy of explosive discharges rapidly,
Compound plate is driven to generate angular impact with substrate, forming a thin layer on metal interface to be combined has plastic deformation, fusing and expand
Scattered and wave character welding transition area.Explosive welding has the advantages that two is big：（1）It can prevent excessive between dissimilar metal
Reaction, can weld common fusion welding can not soldering dissimilar metals；（2）It is adapted for large area multiple working, convenient for system
It makes various covering materials, but how to be applied to the production of copper-aluminium joint of transmission line of electricity so far there are no is publicly reported.
Utility model content
For the above situation, to overcome the defect of the prior art, the purpose of the utility model to be just to provide a kind of power transmission line
Road copper-aluminium joint explosion welding apparatus can effectively solve the production of copper-aluminium joint, ensure product quality, meet used for transmission line
The problem of copper-aluminium joint.
The technical solution that the utility model solves is a kind of copper-aluminium joint explosion welding apparatus used for transmission line, including purple
Copper rod, pure aluminum tube, red copper bar are vertically mounted at steel base upper end, and stretch into the pure aluminum tube for being placed in steel wire support center
Intracardiac, pure aluminum tube upper oral part is equipped with copper gasket seal, is supported equipped with upper gap between red copper bar upper end and fine aluminium inside pipe wall, pure
Aluminum pipe lower end inner wall and stretching between the base outer wall in pure aluminum tube is supported equipped with lower gap, and steel wire support is fitted with periphery
Medicine frame vertically upward, is filled with blasting explosive for explosion welding in medicine frame, and pure aluminum tube is vertically arranged in medicine frame center, plane on explosive
More than 5cm above copper gasket seal, center position is vertically equipped with the detonator for stretching out plane on explosive above copper gasket seal,
Constitute the explosion soldering structure of red copper bar and pure aluminum tube.
The utility model is simple in structure, novel and unique, easy to operate, and soldering effect is good, good product quality, effectively meets
Needs with the copper-aluminium joint that resistance value is low, intensity is high and anti-fatigue performance is good in high voltage, high current transmission line of electricity, and at
This is low, reduces environmental pollution, there is huge economic and social benefit.
Description of the drawings
Fig. 1 is the cross-section structure front view of the utility model.
Specific implementation mode
It elaborates to specific embodiment of the present utility model below in conjunction with attached drawing.
As shown in Figure 1, a kind of copper-aluminium joint explosion welding apparatus used for transmission line of the utility model, including it is red copper bar, pure
Aluminum pipe, red copper bar 4 are vertically mounted at 11 upper end of steel base, and stretch into and be placed in the pure aluminum tube 5 that steel wire supports 10 centers
Intracardiac, 5 upper oral part of pure aluminum tube is equipped with copper gasket seal 2, and upper gap branch is housed between 5 inner wall of 4 upper end of red copper bar and pure aluminum tube
Support 3,5 lower end inner wall of pure aluminum tube and stretches between 11 outer wall of pedestal in pure aluminum tube and supports 9 equipped with lower gap, constitutes red copper bar 4
The alternate interstitial structure opened between 5 inner wall of lateral surface and pure aluminum tube, steel wire support 10 are fitted with the medicine frame of periphery vertically upward
7, medicine frame 7 is interior to be filled with blasting explosive for explosion welding 6, and pure aluminum tube 5 is vertically arranged in medicine frame center, and plane is more than that copper is close on explosive
2 top 5cm of gasket, 2 top center position of copper gasket seal are vertically equipped with the detonator 1 for stretching out plane on explosive, constitute purple
The explosion soldering structure of copper rod 4 and pure aluminum tube 5.
In order to ensure that product quality and using effect, the vertical strut upper end of the pedestal 11 have thread head 8, red copper bar
4 through the vertical spinning of lower end screwed hole of centre on thread head, ensure soldering effect；
The fine aluminium thickness of pipe wall 3-6mm, 4 diameter 20mm of red copper bar, pure aluminum tube is longer 10cm than red copper bar, up and down each length
5cm, fine aluminium inside pipe wall is in the rough surface for being less than 12.5 μm with red copper bar outer surface, to ensure the soldering of red copper bar and pure aluminum tube
Securely；
The alternate gap opened is 2-3mm between 5 inner wall of 4 lateral surface of red copper bar and pure aluminum tube；
The medicine frame 7 and 5 inner wall spacing of pure aluminum tube is 3.5-5cm, and uniformly distributed explosive welding is filled in spacing and is used and is fried
Medicine, that is to say, that the thickness of explosive is 3.5-5cm.
In the specific implementation, detailed description below can be used in the utility model：
1, by the preparation of welding metal material.
5 thickness of pure aluminum tube is 3-6mm；4 diameter 20mm of red copper bar.
In order to reduce detonator zone and boundary no welding zone as far as possible, using following several measures:
（1）Under conditions of ensureing that being cladded with tubing fully accelerates, the gap of pure aluminum tube 5 and red copper bar 4 is minimized.
（2）Pure aluminum tube is longer 10cm than red copper bar, respectively stretches out 5cm up and down, and detonator zone and the boundary effect zone of influence are drawn.
2, the cleaning of welding metal material is waited for.
It is less than 12.5 μm through cleaning treated aluminum pipe inner wall and copper rod outer surface roughness.It, will be to be combined before installation
Dirt on face is cleaned with acetone or alcohol, until it is without other solid matters and dirt.
3, the preparation of explosive.
Prepare corresponding gap and explosive charge, then carries out the experiment of series of small composite plate.Test result is for example wrong
Difference can carry out adjustment appropriate to the explosive thickness δ and spacing h calculated originally.The technology that can meet that experiment obtains is reused to want
The welding parameter asked carries out the explosion weldering of long tube.
Since gap is bigger, air flow exhaust is unsmooth to cause interface to be melted, and causes not combine or in conjunction with bad, so between
The lower limit of gap calculated value or close lower limit select the upper limit or close to the upper limit to deserved unit area explosive payload.Explosive welding explosive
The selection of thickness δ and spacing h such as table 1.
1 clearance height of table and silver plate thickness relationship figure
| Aluminum pipe thickness/mm | δ/cm | h/mm |
| 3 | 3.5 | 2 |
| 4 | 4.0 | 2 |
| 5 | 4.5 | 3 |
| 6 | 5.0 | 3 |
4, it installs
Steel base is placed in the ground grading arranged, red copper bar is placed on thread head, and ensure itself and ground
Vertically, it clears up surface to be combined and places gap, then put on pure aluminum tube, check gap, cover steel gasket, finally place medicine
Frame.
5, cloth medicine
After medicine frame is good and sound, pure aluminum tube is placed in medicine frame center, and main explosive is uniformly poured into medicine frame, it is ensured that and cloth medicine is uniform,
Until being more than 5cm or so above steel gasket.
6, detonator is placed
Detonator is vertically arranged in above steel gasket, and is in center position, ensures that one week explosive propagation of explosion is uniform.
7, it detects
（1）The detection of explosion velocity of explosive and brisance
The measurement of explosion velocity uses sonde method, is measured using multistage explosion velocity tester, and the measurement of brisance uses lead block pressure
Contracting method.
（2）Interface PT is detected
With reference to JB/T4730.5-2005 pertinent regulations, Liquid penetrant testing is carried out to copper aluminium interface.
（3）The detection of boundary strength
Boundary strength is measured with tension test.
The utility model after tested, can effectively realize the combination of pure aluminum tube and red copper bar, be machined by later stage turnning and milling,
A kind of copper-aluminium joint used for transmission line is obtained, wherein fine aluminium stick thickness is 2-6mm, a diameter of 20mm of red copper bar.It is quick-fried using explosive
The fried energy driving pure aluminum tube that generates generates high speed angular impact with red copper bar, generates solid-state diffusion and fusing soldering, interface after soldering
High temperature can radiate again into the low temperature matrix of small deformation rapidly, so that high pressure interface reference state is rapidly quenched and be fixed up, hinder
The only generation of metal excess diffusion reaction and a large amount of brittlement phases.
Pure aluminum tube and red copper bar are combined closely, soldering interface zero defect, both are reduced interface contact resistance, are reduced defeated
10% or more electric energy consumption can be used for high voltage and high current transmission line of electricity junction, anti-not easily to fall off under by frequent outer force effect
Fatigue behaviour is good, and service life extends 3 times or more, and economic and social benefit is huge.
Claims (5)
1. a kind of copper-aluminium joint explosion welding apparatus used for transmission line, including red copper bar, pure aluminum tube, which is characterized in that red copper bar
（4）It is vertically mounted at steel base（11）Upper end, and stretch into and be placed in steel wire support（10）The pure aluminum tube at center（5）Center
It is interior, pure aluminum tube（5）Upper oral part is equipped with copper gasket seal（2）, red copper bar（4）Upper end and pure aluminum tube（5）Upper end is housed between inner wall
Gap supports（3）, pure aluminum tube（5）Lower end inner wall and stretch into the pedestal in pure aluminum tube（11）It is supported equipped with lower gap between outer wall
（9）, constitute red copper bar（4）Lateral surface and pure aluminum tube（5）The alternate interstitial structure opened between inner wall, steel wire support（10）It fills above
There is the medicine frame of periphery vertically upward（7）, medicine frame（7）It is interior to be filled with blasting explosive for explosion welding（6）, pure aluminum tube（5）It is vertically arranged in medicine
Frame center, plane is more than copper gasket seal on explosive（2）Top 5cm, copper gasket seal（2）Top center position is vertical
Equipped with the detonator for stretching out plane on explosive（1）, constitute red copper bar（4）And pure aluminum tube（5）Explosion soldering structure.
2. copper-aluminium joint explosion welding apparatus used for transmission line according to claim 1, which is characterized in that the pedestal
（11）Vertical strut upper end have thread head（8）, red copper bar（4）Through the vertical spinning of lower end screwed hole of centre on thread head.
3. copper-aluminium joint explosion welding apparatus used for transmission line according to claim 1, which is characterized in that the fine aluminium
Thickness of pipe wall 3-6mm, red copper bar diameter 20mm, pure aluminum tube is longer 10cm than red copper bar, up and down each long 5cm, fine aluminium inside pipe wall and red copper
Stick outer surface is in the rough surface less than 12.5 μm, and the soldering to ensure red copper bar and pure aluminum tube is secured.
4. copper-aluminium joint explosion welding apparatus used for transmission line according to claim 1, which is characterized in that the red copper
Stick（4）Lateral surface and pure aluminum tube（5）The alternate gap opened is 2-3mm between inner wall.
5. copper-aluminium joint explosion welding apparatus used for transmission line according to claim 1, which is characterized in that the medicine frame
（7）And pure aluminum tube（5）Inner wall spacing is 3.5-5cm, and uniformly distributed blasting explosive for explosion welding is filled in spacing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820155612.1U CN207888057U (en) | 2018-01-30 | 2018-01-30 | A kind of copper-aluminium joint explosion welding apparatus used for transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820155612.1U CN207888057U (en) | 2018-01-30 | 2018-01-30 | A kind of copper-aluminium joint explosion welding apparatus used for transmission line |
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| Publication Number | Publication Date |
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| CN207888057U true CN207888057U (en) | 2018-09-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108044228A (en) * | 2018-01-30 | 2018-05-18 | 郑州宇光复合材料有限公司 | A kind of copper-aluminium joint explosion welding apparatus used for transmission line |
-
2018
- 2018-01-30 CN CN201820155612.1U patent/CN207888057U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108044228A (en) * | 2018-01-30 | 2018-05-18 | 郑州宇光复合材料有限公司 | A kind of copper-aluminium joint explosion welding apparatus used for transmission line |
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