RU94074U1 - COMPLETE DC DISTRIBUTION DEVICE FOR INPUT, ELECTRICITY DISTRIBUTION AND CONTROL - Google Patents

Abstract

The utility model relates to the field of electrical engineering, namely, to complete DC switchgears for input, distribution of electricity and control. A complete DC switchgear for inputting, distributing electricity and controlling comprises at least one cabinet including a functional equipment compartment, an instrument compartment, a cable connection compartment, a vertical bus compartment, a bus trunk compartment. The functional equipment compartment consists of blocks, which in height form a system built on a modular basis. Blocks of different heights differ by a multiple of one module, equal to 25 mm. Each block from the facade is closed by a door with a lock. Alarm devices, signs with inscriptions are installed on the unit’s door, as well as elements of the mnemonic diagram, forming a single mnemonic diagram of the entire device. Functional equipment is installed inside the unit on a vertical circuit board. The circuit boards of the blocks are mounted on the racks of the frame with a gap between themselves. The blocks of the functional compartment are separated vertically from each other by horizontal partitions. On the basis of each partition there is a group of rectangular holes. The trailing edge of the partition is installed in the gap between the mounting plates, and the front side of the partition is fixed through round holes, which are located in the front of the side edges bent upwards, using a screw connection on the racks of the cabinet frame. In the back of the partition there is an angular cutout, which can be increased by separating part of the partition by biting the bridges between the rectangular holes, which are made along the contour of the corner cutout. The front edge of the septum is bent down. The functional equipment compartment includes a battery charging current monitoring device, which includes a measuring shunt installed in the battery circuit. When the charging current flows on the shunt, a voltage drop is created, which is amplified by normalizing converters for display by the measuring device. To the left of the functional equipment compartment is the instrument compartment, which is closed from the facade by a door with locks. Instruments are installed on the door of the instrument compartment, showing the parameters of current and voltage of the electrical circuits of the cabinet. The instrument compartment is separated from the functional apparatus compartment by a vertically oriented duct placed along the entire height of the cabinet and secured with screw connections to the frame. The electrical connection between the instrument compartment and the functional equipment compartment is provided by electric wires passing through the holes in the walls of the instrument compartment and the blocks of the functional equipment compartment. At the rear of the functional equipment compartment, under the busbar compartment, is the cable connection compartment, closed on the outside by a door with locks and divided in height into mounting zones corresponding to the blocks of the functional equipment compartment. The assembly area of the cable connection compartment and the functional equipment compartment block are located at the same level and occupy the same number of modules in the cabinet. In the installation zone, there are terminal blocks for connecting the electrical wires of the secondary circuits of the unit, adapter busbars for connecting the unit equipment to the vertical buses, closed by partitions, as well as connecting elements for connecting the unit equipment with an electric cable to external electricity consumers. The vertical busbar compartment is closed on the outside by the panel and is separated from the cable compartment by cable dividers. The upper part of the vertical tires is bolted to the busbars. The busbar compartment is located in the upper part of the cabinet and includes a system of horizontally located busbars, which includes the “+” bus and the “-" bus. From below, the busbar compartment is separated by a partition. The trunk busbars of the cabinet are connected by adapter busbars using bolted connections through openings located at the ends of the busbars to the busbars of adjacent cabinets. The main busbars are installed in the busbar supports, including the support and screed, securing the main busbars in the insulators with the help of studs. An increase in the number of trunk bus systems is made by installing new “+” tires and “-” tires in longer bushes. A complete DC switchgear for input, distribution of electricity and control allows you to assemble a switchboard from several cabinets for various purposes, the location of the elements of the complete switchgear ensures its convenient and safe operation and maintenance.

Description

The utility model relates to the field of electrical engineering, namely, to complete DC switchgears for input, distribution of electricity and control.

Known complete switchgear low voltage, which contains the first, second and third cabinets, input busbars, output busbars and bipolar protective devices designed to connect consumers to the output busbars (RU, patent No. 57521 U1, H02B 11/02, 2006) .

This solution is selected as a prototype for the claimed device according to this utility model.

The disadvantage of the prototype is the input of different poles into the opposite cabinets of the shield and the lack of trunk bus because of this, the layout of the shield from a large number of cabinets is difficult, the two-sided arrangement of protective devices in the cabinets on the partition, which makes it difficult to service the back of the device, and leads to inconvenience when controlling devices on both sides of the shield.

The objective of the described utility model, characterizing a complete DC switchgear for input, distribution of electricity and control, is:

- transition to a design that allows you to assemble a shield from several cabinets for various purposes;

- the location of the elements of the complete switchgear in such a way as to ensure its convenient and safe operation and maintenance.

The specified technical results in a complete DC switchgear for input, distribution of electricity and control are achieved through the following solutions:

- A complete DC switchgear for input, distribution of electric power and control comprises at least one cabinet including a functional equipment compartment, an instrument compartment, a cable connection compartment, a vertical bus compartment, a bus trunk compartment;

- The functional equipment compartment is located on the front of the cabinet and is divided into blocks in height. The blocks of the functional compartment in height are made according to the modular principle;

- The instrument compartment is located on the front of the cabinet to the right of the functional apparatus compartment and is separated from the functional apparatus compartment and the vertical busbar compartment by a duct;

- The cable connection compartment is located behind the functional compartment under the busbar compartment and is divided in height according to the modular principle into mounting zones;

- The functional compartment block and the mounting area of the cable connection compartment are located at the same level and occupy the same number of modules;

- The vertical busbar compartment is located in the side of the cabinet and interconnects the busbars and functional equipment;

- The busbar compartment is located at the top of the cabinet across the width of the cabinet. The buses of the busbar compartment are designed to transmit DC power between the cabinets and have the ability to connect to the busbars of adjacent cabinets.

This useful model is illustrated by a concrete example, which, however, is not the only possible one, but clearly demonstrates the possibility of achieving the required technical result with the given set of features.

In Fig.1 shows a front view of the device, Fig.2 is a rear view of the device, Fig.3 is a front view of the functional compartment block, Fig.4 is a rear view of the functional compartment block, Fig.5 is a horizontal partition of the functional equipment compartment , Fig.6 is a diagram of a charging current monitoring device, Fig.7 is a bus with one bus system, Fig.8 is a bus with two bus systems.

The complete DC switchgear for input, distribution of electricity and control consists of the following main elements:

a) frame 1;

b) compartment of the main tires 2;

c) compartment for vertical tires 3;

g) compartment functional equipment 4;

d) instrument compartment 5

e) cable connection compartment 6;

The functional equipment compartment consists of blocks 7. In height, the blocks form a system built on a modular basis. Blocks of different heights differ by a multiple of one module. The modulus is constant and equal to 25 mm. Each block from the facade is closed by a door 8 with a lock. Alarm devices 9 are installed on the door of the unit, showing the state of the unit's equipment, plates 10 with inscriptions, and elements of the mimic diagram 11 are shown that reveal the function of the unit. The mimic diagrams of the blocks form the mnemonic diagram of the cabinet of the complete switchgear. Functional equipment 13 is installed inside the block on the vertical mounting plate 12. The circuit boards of the blocks are mounted on racks 14 of the cabinet frame with a gap between each other. The blocks of the functional compartment are separated vertically from each other by horizontal partitions 15. On the basis of each partition there is a group of rectangular openings 16 that provide air flow for ventilation of the compartment of the functional equipment. The trailing edge 17 of the partition is installed in the gap between the mounting plates, and the front side of the partition is fixed through round holes 18, which are located in the front of the side edges 19 bent upwards, by means of a screw connection on the racks 20 of the cabinet frame. In the back of the partition there is an angular cutout 21, which allows electric wires to pass between the blocks. With a large number of wires, the angular cutout increases due to the separation of part of the partition by biting the jumpers between the rectangular holes 22, which are made along the contour of the angular cutout. The front edge 23 of the partition, bent down, allows you to provide protection against penetration from the outside of the cabinet into the block, through the gap between the doors of adjacent blocks, solid objects.

The functional equipment compartment includes a battery charging current monitoring device, which includes a measuring shunt 24 installed in the battery circuit 25. When the charging current flows on the shunt, a voltage drop is created, which is amplified by the normalizing transducers 26 to the required value for display by the measuring device 27.

To the left of the functional equipment compartment is the instrument compartment, which is closed from the facade by a door 28 with locks. Instruments 29 are installed on the door of the instrument compartment, showing current and voltage parameters of the cabinet electrical circuits. The instrument compartment is separated from the functional equipment compartment by a vertically oriented duct 30. The duct is located along the entire height of the DC switchgear and is screwed to the frame. The electrical connection between the instrument compartment and the functional equipment compartment is provided by electric wires passing through the openings 31 in the walls of the instrument compartment and the functional compartment compartment blocks.

At the back of the functional equipment compartment, under the busbar compartment, is a cable connection compartment, closed on the outside by a door 32 with locks and divided in height into mounting zones corresponding to the blocks of the functional equipment compartment. The assembly area of the cable connection compartment and the functional equipment compartment block are located at the same level and occupy the same number of modules in the cabinet. In the installation zone, terminal blocks 33 are located for connecting the electrical wires of the secondary circuits of the unit, adapter busbars 34 for connecting the unit's equipment to the vertical buses 35 are closed by partitions 36, which provide protection against contact with the elements of the power electric circuit when servicing disconnected secondary electric circuits, as well as connecting elements 37 for connecting the unit equipment with an electric cable with external consumers of electricity.

The vertical busbar compartment is closed on the outside by the panel 38 and is separated from the cable compartment by the partitions 39 to provide protection against contact with the elements of the power circuit when servicing disconnected secondary circuits. The upper part of the vertical tires is connected by bolted connections 40 with the busbars 41.

The busbar compartment is located in the upper part of the enclosure of the complete switchgear and includes a horizontal busbar system, which includes the bus "+" 42 and the bus "- 43. The busbar compartment is separated by a partition 44 from the bottom. The busbars of the cabinet are connected by adapter buses using bolted connections through openings 45 located at the ends of the busbars with the busbars of adjacent cabinets, thus forming a single busbar system for the transmission of electricity between wardrobes. For spatial orientation and fastening of the busbars, the design of busbar supports is used, which includes a support 46 and a coupler 47 fastening the busbars in the insulators 48 with the help of pins 49. The design of the busbar compartment provides the opportunity to increase the number of busbar systems by installing new tires "+" 50 and tires "-" 51 in the longer busbar supports 52.

The described complete DC switchgear for input, distribution of electricity and control allows you to assemble a switchboard from several cabinets for various purposes, the location of the elements of the complete switchgear ensures its convenient and safe operation and maintenance.

Claims (7)

1. A low-voltage complete DC device for input, distribution of electricity and control, comprising at least one cabinet including a functional equipment compartment, an instrument compartment, a cable connection compartment, a vertical bus compartment, a bus trunk compartment, characterized in that the functional equipment compartment is divided on blocks made by the modular principle. 2. The low-voltage complete DC device according to claim 1, characterized in that each block of the functional equipment compartment is separated from the other by a horizontal partition, the front side of which is fixed by screw connection to the vertical racks of the cabinet frame, and the trailing edge is installed in the gap between the mounting plates blocks of the compartment of functional equipment, while the partition is rectangular in shape with bent side and front edges, and the side edges are bent up, front down, in edney each side edge portion has a circular hole, and on the basis of the partition there is a group of rectangular holes, moreover, at the rear corners of the partitions has a corner cutout, the contour of which is formed a series of rectangular openings, separated from each other by webs. 3. The low-voltage complete DC device according to claim 1, characterized in that a mimic diagram is made on the door of each block of the functional equipment compartment, while the mnemonic diagrams of the blocks form a single mnemonic diagram of the entire device. 4. The low-voltage complete DC device according to claim 1, characterized in that to the left of the functional equipment compartment there is an instrument compartment, a door closed from the facade, separated from the functional equipment compartment by a vertically oriented box, the box being placed along the entire height of the complete DC switchgear and fixed by screw connections to the frame. 5. The low-voltage complete DC device according to claim 1, characterized in that the mounting zones of the cable compartment are made in a modular fashion. 6. The low-voltage complete DC device according to claim 1, characterized in that the functional equipment compartment unit and the cable connection compartment mounting area are located at the same level and occupy the same number of modules. 7. The low-voltage complete DC device according to claim 1, characterized in that the busbar compartment contains at least one bus system including a “+” bus and a “-" bus.