CN102801126A - Device capable of reducing heat productivity at lapping surface of buses - Google Patents
Device capable of reducing heat productivity at lapping surface of buses Download PDFInfo
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- CN102801126A CN102801126A CN2012102773240A CN201210277324A CN102801126A CN 102801126 A CN102801126 A CN 102801126A CN 2012102773240 A CN2012102773240 A CN 2012102773240A CN 201210277324 A CN201210277324 A CN 201210277324A CN 102801126 A CN102801126 A CN 102801126A
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- bus bar
- buses
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- rectangular bus
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Abstract
The invention discloses a device capable of reducing heat productivity at a lapping surface of buses. The device capable of reducing heat productivity at the lapping surface of the buses comprises a first rectangular bus and a second rectangular bus which are ranked in a straight line shape and have the end parts overlapped. The device capable of reducing heat productivity at the lapping surface of the buses is characterized in that two sides of the overlapped part are respectively provided with a reinforced heat radiating plate. According to the invention, the joint of the lapped buses is additionally provided with the reinforced heat radiating plate which is a part made of cast steel, and with good rigidity and high strength; the rectangular buses are pressed tightly and attached together through a fastening bolt, thus the stress is relatively uniform; the effective contact area at the contact surface is increased, the contact and lapping effects are improved, and the contact resistance and heat productivity are reduced; and meanwhile, the surface of the reinforced heat radiating plate is relatively large, the diffusion of heat at the joint to the periphery is accelerated, the heat radiating effect is also intensified greatly, and the temperature rise at the joint is lowered.
Description
Technical field
The present invention relates to a kind of device that can reduce bus faying surface place caloric value; Be used for switchgear assembly in production, manufacture process; Reduce the device that the rectangular bus bar in the primary circuit generates heat in the joint in the switch cubicle, belong to and reduce the device technique field of bus in the joint heating.
Background technology
In power transmission and transformation system, switchgear assembly is extremely important part, in electric power system, is realizing the conveying and the distribution of electric energy.In the production of switchgear, manufacture process, rectangular bus bar is the conductive carrier of the most frequently used primary circuit, is connected on request, assembles with other major component (like circuit breaker etc.); The primary circuit of forming switchgear; The effect of rectangular bus bar is to compile, distribute and transmit electric energy, generally selects for use by the temperature rise principle, when in the bus during through rated current; Its temperature rise should not be elevated to allowable value; Comparatively speaking, the temperature of its joint than the temperature of other part on the bus rise sooner, caloric value is bigger, the problem of temperature rise that solves its joint is the key point of primary circuit median generatrix safety, normal operation.
At present the most frequently used in the switchgear assembly is that the cross section is the rectangular bus bar of rectangle; Its length is decided as required; Overlapping mode commonly used is to open installing hole, its assembling is firm with securing member at joint area between its bus; Make to contact between its contact-making surface well, normal current passes through in the assurance primary circuit.But, the temperature at primary circuit center tap place than the temperature of other part on the bus rise sooner, heating is bigger, mainly contains the reason of following several aspects:
1, rectangular bus bar is the section bar that forms through drawing, considers technical matters and processing cost, and its surface roughness, flatness generally are not very high, and the contact effect of contact-making surface is not very desirable during assembling;
2, the material of rectangular bus bar is generally copper or aluminium, and Material Strength is not very big, and is more yielding receiving under the external force effect, has influence on the overlap joint effect of contact-making surface;
3, when assembling with securing member, better near the contact at securing member place, because the distortion of bus, it imitates contact area is not very big away from the contact-making surface at securing member place, and contact resistance is higher, is easy to heating.
Though rectangular bus bar is far longer than its cross section at the nominal area of joint overlap joint, owing to there being aforesaid reason, its contact resistance and caloric value are bigger.When temperature is elevated to a certain degree; Can destroy its surperficial protective layer coating of (as for reducing the silver that adds or the corrosion-resistant tin of contact resistance), form the bigger oxide layer of resistance, further increase heating mechanical equivalent amount; Worsen so repeatedly; The resistance and the caloric value of joint further increase, and not only cause waste of electric energy, finally also can cause bus fusing or form other bigger accident.
According to above-mentioned reason, the overlap joint situation of improving its joint is to solve the effective method of such problem.Remove and to increase the overlay coating place in its joint, effective measures are to increase its contact pressure and thus increasing heat radiation effect, and its comprehensive benefit should be better.
Summary of the invention
It is a kind of reasonable, simple, reliable to the purpose of this invention is to provide, and can reduce the device of bus faying surface place caloric value.
In order to achieve the above object; The invention provides a kind of device that can reduce bus faying surface place caloric value; Comprise yi word pattern arrangement and overlapping first rectangular bus bar and second rectangular bus bar in end, it is characterized in that the both sides of its overlapping are respectively equipped with one and strengthen heating panel.
Preferably, two blocks of described reinforcement heating panels are the center symmetric arrangement with the faying surface of first rectangular bus bar and second rectangular bus bar.
Further, described reinforcement heating panel is the C template, and the opening of this reinforcement heating panel is outwards arranged.
Further, be provided with a slice fin at least between the end of first rectangular bus bar and second rectangular bus bar.
Further, described fin is the silver foil pad.
Further, the thickness of said silver foil pad is 0.5mm.
The present invention has increased the reinforcement heating panel in the joint of the bus that is overlapped; It is the cast steel product, and good rigidly, intensity are big, through fastening bolt rectangular bus bar are compressed and stick together; Make it stressed comparatively even; Effective contact area at contact-making surface place increases, and has improved contact, overlap joint effect, has reduced contact resistance and caloric value; Simultaneously, the surface of strengthening heating panel is bigger, speeds up what the heat of joint spread towards periphery, and its radiating effect also strengthens greatly, has reduced the temperature rise of joint.The surface area of C template is big, and promptly area of dissipation is also big; Silver foil pad quality is softer, resistance is very little, thickness is less; Under big external force effect, be easy to take place plastic deformation; Silver material can be filled in the pit on the surface of the rectangular bus bar that contacts with it; Increased the overlap joint situation at its contact-making surface place greatly, contact resistance is reduced greatly, its caloric value also is being minimizing.
The present invention has following advantage:
1, principle is novel, simple in structure, the generalization degree high, is suitable for producing in batches;
2, easy to assembly, production efficiency is high, scientific and reasonable for structure;
3, improved the service efficiency of electric energy, the operation that has reduced switchgear and maintenance cost, the equipment that guaranteed is normal, safety, reliability service.
Description of drawings
Fig. 1 is the front view of C template for the device that can reduce bus faying surface place caloric value;
Fig. 2 is the end view of Fig. 1;
Fig. 3 is the vertical view of Fig. 1;
Fig. 4 is the front view that is provided with the device that can reduce bus faying surface place caloric value of fin;
Fig. 5 is the end view of Fig. 4;
Fig. 6 is the vertical view of Fig. 4.
Among the figure:
1, first rectangular bus bar; 2, fastening bolt;
3, strengthen heating panel; 4, second rectangular bus bar;
5, fin.
Embodiment
For making the present invention more obviously understandable, now with preferred embodiment, and conjunction with figs. elaborates as follows.
Shown in Fig. 1-3; For the device that can reduce bus faying surface place caloric value provided by the invention is the structural representation of C template; Comprise first rectangular bus bar 1 and second rectangular bus bar 4 that word order and end are overlapping, be provided with two in the bilateral symmetry of its overlapping and strengthen heating panels 3, make reinforcement heating panel 3 and inboard first rectangular bus bar 1 in the outside, second rectangular bus bar 4 overlapping; In its overlapping perforate, and with fastening bolt 2 attaching nuts, bullet pad, the fastening clamping of plain cushion.First rectangular bus bar 1 and second rectangular bus bar 4 are the section bar of copper or aluminium and process.Strengthening heating panel 3 is cast steel products, and its face shaping is the C type, and to increase its surperficial area of dissipation and the intensity of self, the opening of heating heating panel 3 is outwards arranged.
Shown in Fig. 4-6; Be the structural representation that is provided with the device that can reduce bus faying surface place caloric value of fin provided by the invention; Comprise first rectangular bus bar 1 and second rectangular bus bar 4 that word order and end are overlapping; Being provided with between two ends of strengthening heating panel 3, the first rectangular bus bars 1 and second rectangular bus bar 4 in the both sides of its overlapping increases a slice fin 5.Overlapping reinforcement heating panel 3, first rectangular bus bar 1 and second rectangular bus bar 4 and the fin 5 of ecto-entad overlaps, in its overlapping perforate, and with fastening bolt 2 attaching nuts, bullet pad, the fastening clamping of plain cushion.First rectangular bus bar 1 and second rectangular bus bar 4 are the section bar of copper or aluminium and process.
Claims (6)
1. the device that can reduce bus faying surface place caloric value comprises yi word pattern arrangement and overlapping first rectangular bus bar (1) and second rectangular bus bar (4) in end, it is characterized in that, the both sides of its overlapping are respectively equipped with one and strengthen heating panel (3).
2. a kind of device that can reduce bus faying surface place caloric value as claimed in claim 1 is characterized in that two blocks of described reinforcement heating panels (3) are the center symmetric arrangement with the faying surface of first rectangular bus bar (1) and second rectangular bus bar (4).
3. a kind of device that can reduce bus faying surface place caloric value as claimed in claim 2 is characterized in that described reinforcement heating panel (3) is the C template, and the opening of this reinforcement heating panel (3) is outwards arranged.
4. a kind of device that can reduce bus faying surface place caloric value as claimed in claim 1 is characterized in that, is provided with a slice fin at least between the end of first rectangular bus bar and second rectangular bus bar.
5. a kind of device that can reduce bus faying surface place caloric value as claimed in claim 4 is characterized in that described fin is the silver foil pad.
6. a kind of device that can reduce bus faying surface place caloric value as claimed in claim 5 is characterized in that the thickness of said silver foil pad is 0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102773240A CN102801126A (en) | 2012-08-06 | 2012-08-06 | Device capable of reducing heat productivity at lapping surface of buses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102773240A CN102801126A (en) | 2012-08-06 | 2012-08-06 | Device capable of reducing heat productivity at lapping surface of buses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102801126A true CN102801126A (en) | 2012-11-28 |
Family
ID=47200145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102773240A Pending CN102801126A (en) | 2012-08-06 | 2012-08-06 | Device capable of reducing heat productivity at lapping surface of buses |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102801126A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110504559A (en) * | 2019-08-28 | 2019-11-26 | 臧龙 | A kind of power bus-bar |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3103433C2 (en) * | 1981-02-02 | 1989-08-17 | Asea Brown Boveri Ag, 6800 Mannheim, De | |
| JPH05219631A (en) * | 1992-02-06 | 1993-08-27 | Fuji Electric Co Ltd | Cooling structure at joint of conductor |
| CN201270397Y (en) * | 2008-06-24 | 2009-07-08 | 江苏希格赛斯电气有限公司 | Bus-bar unit connecting device |
| CN202013958U (en) * | 2010-12-23 | 2011-10-19 | 向荣集团有限公司 | Joint for heavy current bus |
| CN102386597A (en) * | 2011-12-03 | 2012-03-21 | 江苏省成套电气工程技术研究中心 | Heat dissipation type bus duct |
-
2012
- 2012-08-06 CN CN2012102773240A patent/CN102801126A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3103433C2 (en) * | 1981-02-02 | 1989-08-17 | Asea Brown Boveri Ag, 6800 Mannheim, De | |
| JPH05219631A (en) * | 1992-02-06 | 1993-08-27 | Fuji Electric Co Ltd | Cooling structure at joint of conductor |
| CN201270397Y (en) * | 2008-06-24 | 2009-07-08 | 江苏希格赛斯电气有限公司 | Bus-bar unit connecting device |
| CN202013958U (en) * | 2010-12-23 | 2011-10-19 | 向荣集团有限公司 | Joint for heavy current bus |
| CN102386597A (en) * | 2011-12-03 | 2012-03-21 | 江苏省成套电气工程技术研究中心 | Heat dissipation type bus duct |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110504559A (en) * | 2019-08-28 | 2019-11-26 | 臧龙 | A kind of power bus-bar |
| CN110504559B (en) * | 2019-08-28 | 2020-11-20 | 苏州市启华机电设备有限公司 | Electric power busbar |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121128 |