CN202142822U

CN202142822U - Novel bus duct

Info

Publication number: CN202142822U
Application number: CN201120197614U
Authority: CN
Inventors: 仲明振; 崔静; 段毅; 王阳; 韩东明; 王沙
Original assignee: TIANJIN TIANZHUAN ELECTRIC CONTROL POWER DISTRIBUTION CO Ltd; Tianjin Electric Transmission Design And Research Institute
Current assignee: Tianjin Design & Research Institute Of Electric Drive Co ltd; TIANJIN TIANCHUAN ELECTRIC CONTROL POWER DISTRIBUTION CO LTD; Electric Power Research Institute of State Grid Tianjin Electric Power Co Ltd
Priority date: 2011-06-13
Filing date: 2011-06-13
Publication date: 2012-02-08
Anticipated expiration: 2021-06-13

Abstract

The utility model relates to a novel bus duct. The novel bus duct is composed of a case structure and buses arranged therein, wherein the case structure is composed of a left aluminium magnesium alloy side plate and a right aluminium magnesium alloy side plate, and an upper aluminium magnesium alloy cover plate and a lower aluminium magnesium alloy cover plate. The buses are uniformly arranged between insulating supports up and down at intervals. The buses are copper aluminium composite buses. Copper is covered outside each bus, the inner core of each bus is aluminium, and the outer copper cross section accounts for 20% of the whole cross section of each bus. An insulating layer is arranged outside each copper aluminium composite bus. The aluminium magnesium alloy side plates and the aluminium magnesium alloy cover plates are mounted without bolts. The novel bus duct is simple in structure, low in impedance, low in voltage drop, low in energy consumption, low in cost and high in using reliability. The bus duct is provided with a temperature monitoring system and an electric leakage monitoring system, such that the operating temperature of the bus duct can be automatically detected, and the leakage current of a power supply line can be automatically detected. In addition, alarming for over-limit is carried out, thereby guaranteeing the safety of a power supply system. Therefore, the novel bus duct is an intelligent and energy-saving bus duct with low cost, and exhibits a wide application prospect.

Description

A kind of novel bus groove

Technical field

The utility model belongs to the controller switching equipment of power domain, especially a kind of novel bus groove.

Background technology

China's electric power industry development is rapid; Driven increasing substantially of copper demand, the copper conductor cost accounts for more than 70% of total cost in bus duct, and the copper material price went up more than 4 times in recent years; Bring immense pressure for bus duct manufacturing enterprise; Force enterprise to have to reduce cross-sectional area of conductor and deal with, not only reduced the security performance of bus duct thus, and increased energy consumption.The rich aluminium of the poor copper of China; Copper aluminium composite conductor fundamental performance parameter is near copper conductor, but the cost reduction is made bus duct with copper aluminium composite conductor more than 40%; Not only can significantly reduce cost; And can alleviate the dependence of bus duct to copper material in short supply, and use the lower cost increasing section, obtain bigger energy-saving effect.

In addition, existing bus duct does not have monitoring temperature and electric leakage monitoring function, thereby is difficult to prevent Yin Wendu to uprise and causes ageing of insulation, causes the accident of short circuit, and prevention causes electrical fire because of electric leakage.

Through retrieval, do not find the patent documentation relevant as yet with present patent application.

Summary of the invention

The purpose of the utility model is to overcome the weak point of prior art, provides a kind of performance index with low cost, various excellent novel bus groove.

The purpose of the utility model is achieved in that

A kind of novel bus groove; Be made up of the almag side plate of both sides, the bus installed in the formed body structure of almag cover plate and the casing up and down, bus is uniformly distributed with at interval and is installed between the upper and lower insulating support, and it is characterized in that: said bus is the copper aluminium composite bus; Its skin is a copper; Inner core is an aluminium, and outer copper cross section accounts for 20% of whole cross section, and this copper aluminium composite bus has one deck insulating barrier outward and is uniformly distributed with and is installed between the upper and lower insulating support at interval; Outside insulating support, press-fit a keeper plate of steel, copper aluminium composite bus, insulating support and keeper plate of steel adopt fastening bolt and almag side plate to be solidly installed each other; The installation of said almag side plate and almag cover plate adopts non-bolt to install.

And; Said almag side plate and almag cover plate adopt the installation form of non-bolt to be: the two ends at the almag side plate all are shaped on groove; Almag cover plate lower edge is shaped on chimb, and the chimb on the cover plate sticks in the side plate groove, simultaneously; One jump ring is installed on the fastening bolt of fastening copper aluminium composite bus, is leaned on the elastic force chucking almag cover plate of two ends jump ring.

And, be laid with the dentation fin on the said almag side plate.

And, one group of temperature sensor is installed on the insulating support of bus duct junction, the temperature indicator of this temperature sensor is installed on the almag cover plate.

And the leading-out terminal of switch is equipped with a residual current transformer in the jack box of bus duct.

And the outer insulating barrier of said copper aluminium composite bus is the PET polyester film.

The advantage and the good effect of the utility model are:

1, this bus duct is done bus with copper aluminium composite conductor, and skin is a copper, and its antioxygenic property is strong; Contact resistance is little, and is identical with copper conductor, and inner core is an aluminium; In light weight, cost is low, and outer copper cross section accounts for 20% of whole cross section; Reach the optimality price ratio, and because the effect of kelvin effect, the ampacity of copper aluminium composite conductor is near the T2 copper bar.

2, the almag shell of this bus duct by left side plate and up and down cover plate form, side plate is provided with the dentation fin, two ends are provided with triangular groove; These designs have increased area of dissipation; Improved ampacity, also strengthened shell rigidity, triangular groove is convenient to trip bus duct installed simultaneously.

3, this bus duct is provided with groove on the side plate of both sides, and cover plate is provided with chimb, and the side plate upper groove is advanced in cover plate epirelief checkpost, simultaneously, and fastening jump ring on bolt, and lean on the elastic force of jump ring, realize that non-bolt connects, good looking appearance has also improved the shell protection grade.

4, on the insulating support of this bus duct temperature detection sensor is housed, temperature indicator is housed on the cover plate, temperature sensor is connected on the temperature indicator with special wire, forms temperature monitoring system, in real time temperature on the supervision conductor; And; The residual current transducer is equipped with in the switch outlet in busway inserting case; Leakage current on can detection line is delivered to watch-dog and is monitored in real time, realizes monitoring temperature and electric leakage monitoring; Can prevent Yin Wendu to uprise the accident that causes ageing of insulation and cause short circuit, also can prevent to cause electrical fire because of electric leakage.

5, the utility model is simple in structure; Low ESR, low pressure drop, low energy consumption, low cost, dependability is high, can detect operating temperature of bus duct and leakage current automatically; And overload alarm; Guaranteeing the safety of electric power system, is a kind of bus duct of intelligent low-cost energy-saving, is with a wide range of applications.

Description of drawings

Fig. 1 is the front view (partly cuing open) of the utility model;

Fig. 2 is the A bilge construction enlarged diagram of Fig. 1;

Fig. 3 is the perspective view of the utility model;

Fig. 4 is the stereochemical structure enlarged diagram of the utility model cross-over block;

Fig. 5 is the jack box panel front view of the utility model.

Embodiment

Be described in detail the embodiment of the utility model below in conjunction with accompanying drawing; Need to prove that present embodiment is narrative, is not determinate, can not limit the protection range of the utility model with this.

A kind of novel bus groove, its structure such as Fig. 1, Fig. 3 are made up of the almag side plate 8 of both sides, the copper aluminium composite bus 4 installed in almag cover plate 1 formed body structure and the casing up and down, and copper aluminium composite bus skin is a copper; Inner core is an aluminium, adopts the preparation of solid-liquid fusion process, and copper aluminium interface bond strength is high; Outer copper cross section accounts for 20% of whole cross section, and this composite construction makes whole bus antioxygenic property strong, and contact resistance is little; In light weight, cost is low, and ampacity is near the T2 copper bar.The copper aluminium composite bus has one deck insulating barrier 5 outward; This insulating barrier adopts the manufacturing of PET polyester film; Its effect is a phase insulation; The copper aluminium composite bus is uniformly distributed with at interval and is installed between the upper and lower insulating support 3, outside insulating support, press-fits a keeper plate of steel 2, and copper aluminium composite bus, insulating support and keeper plate of steel adopt fastening bolt 6 and almag side plate to be solidly installed each other.

Be laid with dentation fin 9 on the almag side plate, so that heat radiation; The installation of almag side plate almag cover plate adopts non-bolt to install, and promptly all is shaped on groove 11 at the two ends of almag side plate, referring to Fig. 2; Almag cover plate lower edge is shaped on chimb 10, and the chimb on the cover plate sticks into the side plate groove, simultaneously; One jump ring 7 is installed on the fastening bolt of fastening copper aluminium composite bus; Lean on the elastic force chucking almag cover plate of jump ring, not only good looking appearance has also improved the shell protection grade.

One group of temperature sensor (not shown) is installed in insulating support,, temperature indicator 12 is installed on the almag cover plate referring to Fig. 3.Temperature sensor is connected on the temperature indicator with special wire, forms temperature monitoring system, with temperature on the real-time supervision conductor

The leading-out terminal of the switch 13 of busway inserting case 14 is equipped with residual current transformer 15, with automatic detection supply line leakage current in service, and overload alarm, the safety of assurance electric power system.

Claims

1. novel bus groove; Be made up of the almag side plate of both sides, the bus installed in the formed body structure of almag cover plate and the casing up and down, bus is uniformly distributed with at interval and is installed between the upper and lower insulating support, and it is characterized in that: said bus is the copper aluminium composite bus; Its skin is a copper; Inner core is an aluminium, and outer copper cross section accounts for 20% of whole cross section, and this copper aluminium composite bus has one deck insulating barrier outward and is uniformly distributed with and is installed between the upper and lower insulating support at interval; Outside insulating support, press-fit a keeper plate of steel, copper aluminium composite bus, insulating support and keeper plate of steel adopt fastening bolt and almag side plate to be solidly installed each other; The installation of said almag side plate and almag cover plate adopts non-bolt to install.

2. novel bus groove according to claim 1; It is characterized in that: said almag side plate and almag cover plate adopt the installation form of non-bolt to be: the two ends at the almag side plate all are shaped on groove; Almag cover plate lower edge is shaped on chimb, and the chimb on the cover plate sticks in the side plate groove, simultaneously; One jump ring is installed on the fastening bolt of fastening copper aluminium composite bus, is leaned on the elastic force chucking almag cover plate of two ends jump ring.

3. novel bus groove according to claim 2 is characterized in that: be laid with the dentation fin on the said almag side plate.

4. novel bus groove according to claim 1 is characterized in that: one group of temperature sensor is installed on the insulating support of bus duct junction, and the temperature indicator of this temperature sensor is installed on the almag cover plate.

5. novel bus groove according to claim 1 is characterized in that: the leading-out terminal of switch is equipped with a residual current transformer in the jack box of bus duct.

6. novel bus groove according to claim 1 is characterized in that: the outer insulating barrier of said copper aluminium composite bus is the PET polyester film.