Copper-aluminum alloy intelligent bus trunk line system

Abstract

The invention discloses a copper-aluminum alloy intelligent bus trunk line system, which is used for a power transmission trunk line and power distribution in constructional engineering and comprises a bus duct starting end joint, a bus body, a variable capacitance joint, a branch unit and a bus duct terminal. A temperature detection circuit, an over-temperature alarm circuit, an over-limit cut-off power supply circuit, a circuit for detecting the voltage of a bus shell of the bus duct and an automatic cut-off power supply circuit when the voltage of the bus shell exceeds the personal safety voltage are arranged at an initial end joint and a variable capacitance joint of the bus duct; the bus body is composed of bus shells and busbars, and the joints of the adjacent sections of bus shells and busbars are respectively provided with a female groove, or/and a bus connector, or/and a bus connector with a tapping function, or/and a bus connector with an equipotential terminal, or/and a variable capacitance bus duct located in each floor of the building; all connections of the bus duct are effectively transited and perfectly combined by adopting copper-aluminum alloy, so that copper resources are saved, the construction cost is reduced, and the safety performance of a power supply system is improved.

Description

【Technical field】 [0001] The invention relates to electric energy transmission and connection technology, in particular to a copper-aluminum alloy smart bus trunk system. 【Background technique】 【Background technique】 [0002] With the emergence of modern engineering facilities and equipment, the power consumption of all walks of life is increasing rapidly, especially the emergence of many high-rise buildings and large workshops. The traditional cables used as power transmission wires can no longer meet the requirements in large current transmission systems. The parallel use of multiple cables brings a lot of inconvenience to the site installation and construction connection. As a new type of power distribution wire, the plug-in busway came into being. The busway is used for the main line of power transmission in the field of power transmission trunk line, and it is a substitute product for power cables. Compared with traditional cables, it can It fully demonstrates its su...

AI Technical Summary

Problems solved by technology

[0005] In addition, due to my country's large-scale construction and rapid industrial development, our copper consumption accounts for more than 50% of the world's total, and more than 60% of my country's copper is imported. my country has always been a country poor in copper and rich in aluminum. The resources are very rich; this leads to the problem of cutting corners in the busway, such as using copper-clad aluminum instead of copper, two ends of copper with aluminum in the middle, two ends with a large middle and a small one, due to the poor conductivity of the aluminum conductor, and the center of the busway copper bar being punched and stolen In many projects, only half of the load current busway was burned out, which brought difficulties to the quality control of the project and caused engineering safety hazards

[0006] For the TN-S power supply main line system of the busway, most projects adopt independent PE lines, and flat irons are added for equipotential grounding. The busway shell and PE cannot form an effective evacuation, resulting in the failure of the protective connection system and the PE becoming a decoration

Buried safety hazards in the project

[0007] In high-rise industrial plants, the busway line is long, and the current specification of the busway should be reduced after the branch is in the middle. However, the relevant regulations stipulate the protection levels of the power supply system, and the switch is set after the busway is changed, which does not meet the specifications. , so the project rarely changes and wastes resources

[0008] Moreover, although the cost of the aluminum conductor bus duct is low, the aluminum conductor bus is easy to oxidize. If the aluminum conductor of the bus is directly connected to the copper conductor, galvanic corrosion will occur. Therefore, the aluminum conductor bus is rarely used in engineering, but the copper price continues to rise. It has increased the cost of our country's modernization construction and affected the construction

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