CN206420951U - A kind of bus duct joint apparatus for warning overload - Google Patents

Abstract

The utility model relates to the technical field of bus ducts, in particular to an overload alarm device for bus duct joints; the utility model comprises a bus duct and an alarm box. A single-chip microcomputer with a built-in alarm is installed, and a current comparator and an A/D converter connected to each other are installed in the support plate; It is converted into a digital signal by the A/D converter, and the received digital signal is filtered and rectified by the single-chip microcomputer for output. The single-chip microcomputer is equipped with an alarm. The alarm will be activated, realizing the real-time monitoring and alarming of the overload condition of the busway joints. The structure is simple, the monitoring is convenient, and the safety performance is high.

Description

An overload alarm device for bus duct joints

technical field

The utility model relates to the technical field of bus ducts, in particular to an overload alarm device for bus duct joints.

Background technique

Busway refers to a closed metal device composed of copper and aluminum busbar columns, which is used to distribute large power to various components of the decentralized system.

The busway is developed by the United States, a new circuit called "Bus-Way-System", which uses copper or aluminum as a conductor, supported by non-olefinic insulation, and then installed in a metal groove to form a new type conductor.

With the emergence of modern engineering facilities and equipment, the electricity consumption of all walks of life has increased rapidly, especially the emergence of many high-rise buildings and large workshops, and now it has become indispensable in electrical equipment and power systems such as high-rise buildings and factories. The wiring method; the traditional cable as a transmission wire can no longer meet the requirements in the large current transmission system, the parallel use of multiple cables brings a lot of inconvenience to the site installation and construction connection and due to the needs of various buildings such as buildings and factories , and this need has a tendency to increase year by year. Using the original circuit wiring method, that is, the pipe-through method, brings many difficulties during construction. Moreover, when it is necessary to change the power distribution system, it is almost impossible to make it simpler. However, if the busway is used, it is very easy to achieve the purpose, and it can also make the building more beautiful.

Compared with the traditional cables, the bus duct fully demonstrates its superiority in the transmission of large currents. At the same time, due to the adoption of new technology and new technology, it greatly reduces the cost of the connection at the two ends of the bus duct and the insertion of the branch port. contact resistance and temperature rise, and high-quality insulating materials are used in the busway, which improves the safety and reliability of the busway and makes the whole system more perfect.

The characteristics of the bus duct are series matching, commercial production, small size, large capacity, short design and construction period, convenient assembly and disassembly, non-combustible, safe and reliable, and long service life.

At present, the damage of the bus duct is mostly caused by long-term overload operation. The overload of the bus duct is mainly due to heat dissipation. When the load current exceeds the rated current, the copper bars inside the bus duct will heat up and the internal temperature will rise. Because the bus duct itself has no overload protection measures, it often runs for a long time, which will cause the bus duct and its distribution lines to be in a state of temperature rise for a long time, so the contacts and terminals of the conductor will be lost, and the insulation performance of the line will also be reduced, which will accelerate the aging effect. The service life of the bus duct. If it is seriously overloaded for a long time, the temperature of the busway and its distribution lines will rise sharply, and the insulation of the lines will soften and collapse, which will cause a series of hazards such as short circuit and burnout of the lower circuit breaker, which will bring safety hazards to people's lives and cause serious damage. Large property loss; therefore, it is particularly important to provide an overload alarm device for bus duct joints to maintain the normal operation of electrical equipment.

Contents of the invention

In order to overcome the above-mentioned deficiencies, the purpose of this utility model is to provide an overload alarm device for bus duct joints. Converter to digital signal, and the received digital signal is filtered and rectified by the single-chip microcomputer to output. The single-chip microcomputer is equipped with an alarm. Start up, and realize the real-time monitoring and alarm of the overload condition of the bus duct joint.

The technical scheme that the utility model solves its technical problem is:

An overload alarm device for bus duct joints, which includes a bus duct and an alarm box, the alarm box is connected between adjacent bus ducts, one end of the bus duct is provided with a joint part, and the joint part is provided with clamping column; the alarm box is provided with two connecting plates and a supporting plate, the two ends of the supporting plate are respectively connected to the inner side wall of the connecting plate, and the inner side wall is installed on the outer side wall of the connecting plate. A single-chip microcomputer with an alarm, a current comparator and an A/D converter connected to each other are installed in the support plate, the A/D converter is connected to the single-chip microcomputer, and the clamping post is connected to the connecting plate , the bus bar of the bus bar duct is connected with the support plate.

As an improvement of the utility model, the alarm is a buzzer.

In the utility model, the bus bar is connected to the support plate, and the clamping column is connected to the connection plate, so that the current comparator in the support plate can better compare the current of the input end of the bus bar, and pass the received analog signal through A The /D converter is converted into a digital signal, and then processed by the single-chip microcomputer. When the current overload control alarm is detected, the alarm will be alarmed, so as to perform maintenance in time and eliminate hidden dangers; The received analog signal is converted into a digital signal through the A/D converter, and the received digital signal is filtered and rectified by the single-chip microcomputer, and the single-chip microcomputer is equipped with an alarm. , the alarm on the single-chip microcomputer will start, realizing the real-time monitoring and alarming of the overload condition of the bus duct joint, with simple structure, convenient monitoring and high safety performance.

Description of drawings

For ease of description, the utility model is described in detail by the following preferred embodiments and accompanying drawings.

Fig. 1 is the internal connection structure schematic diagram of the present utility model;

Reference signs: 1-busway, 11-connector, 12-busbar, 13-clip post, 2-alarm box, 21-connecting board, 22-supporting board, 23-single-chip microcomputer, 24-current comparator, 25- A/D converter, 26-alarm.

detailed description

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

As shown in FIG. 1 , an overload alarm device for a bus duct joint of the present invention includes a bus duct 1 and an alarm box 2 , and the alarm box 2 is connected between adjacent bus ducts 1 .

One end of the bus duct 1 is provided with a joint part 11 , and the joint part 11 is provided with a locking post 13 .

Two connecting plates 21 and a support plate 22 are arranged in the alarm box 2, and the two ends of the supporting plate 22 are respectively connected on the inner side wall of the connecting plate 21, and a single-chip microcomputer with a built-in alarm 26 is installed on the outer wall of the connecting plate 21 23. A current comparator 24 and an A/D converter 25 connected to each other are installed in the support plate 22. The A/D converter 25 is connected to the single-chip microcomputer 23, and the clamping post 13 is connected to the connecting plate 21. The bus bar 12 of the bus duct 1 Connect with the support plate 22.

In the utility model, the busbar 12 is connected with the support plate 22, and the clamping column 13 is connected with the connection plate 21, so that the current comparator 24 in the support plate 22 can better compare the current of the input end of the busbar 12, and the The received analog signal is converted into a digital signal through the A/D converter 25, and then processed by the single-chip microcomputer 23. When the current overload control alarm 26 is detected to give an alarm, maintenance is carried out in time to eliminate hidden dangers.

The utility model provides an embodiment of the alarm 26, and the alarm 26 is a buzzer.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (2)

1. a kind of bus duct joint apparatus for warning overload, it is characterised in that including bus duct and warning box, the warning box connection Between the adjacent bus duct, one end of the bus duct is provided with connector portions, and the connector portions are provided with clip-connecting rod；It is described Two pieces of connecting plates and one piece of supporting plate are provided with warning box, the two ends of the supporting plate are connected to the interior of the connecting plate On the wall of side, be provided with the lateral wall of the connecting plate in set to be provided with the single-chip microcomputer of alarm, the supporting plate and be connected Current comparator and A/D converter, the A/D converter is connected with the single-chip microcomputer, the clip-connecting rod and the connecting plate Connection, the bus of the bus duct is connected with the supporting plate.

2. a kind of bus duct joint apparatus for warning overload according to claim 1, it is characterised in that the alarm is honeybee Ring device.