CN104538879A - Box type fixed alternating-current metal-enclosed switchgear - Google Patents

Abstract

The invention relates to a box-type fixed AC metal-enclosed switchgear, which includes a low-voltage box room, a high-voltage box room, a base and a top cover. The high-voltage box room is connected to the base and the top cover respectively, and the low-voltage box room is connected to the side surface of the high-voltage box room. And connected with the top cover, the low-voltage chamber and the high-voltage chamber are equipped with at least one partition, and the inner and outer surfaces of the side plates of the low-voltage chamber and the high-voltage chamber are each equipped with at least 4 connecting holes, and the connecting holes are connected with the connecting positioning column. Connection, connection The end of the positioning column is connected to the base, the top is connected to the top cover, the base is provided with at least 3 cable holes, the lower surface is provided with a support block, and the upper surface of the top cover is provided with a ventilation fan. Compared with traditional switchgear, the present invention has simple and compact structure, greatly reduced volume and self-weight, and has flexible and convenient structural assembly and disassembly, so that on the one hand, the installation and transfer capacity of the switchgear is greatly improved, and on the other hand, it also helps Reduce the difficulty of equipment repair and maintenance construction.

Description

A box-type fixed AC metal-enclosed switchgear

technical field

The invention relates to a box-type fixed AC metal-enclosed switchgear, which belongs to the technical field of high-voltage switchgear equipment. the

Background technique

The box-type fixed AC metal-enclosed switchgear currently used is the most commonly used indoor complete power distribution device, which can be widely used in the introduction and distribution of power in large-voltage 50Hz three-phase AC power supply systems, and at the same time can protect the circuit airway , monitoring and other functions to ensure the safety and stability of power supply, so it is often necessary to install multiple electrical components and equipment inside, and requires high-voltage circuits and low-voltage circuits to run at the same time, so in order to ensure the safety of power supply, the currently used in the design When the structural design is unreasonable, the volume of the equipment is blindly increased, and the disassembly and installation are extremely difficult, which leads to the inconvenience of the current box-type fixed AC metal-enclosed switchgear for transportation, installation and daily maintenance. The box-type fixed AC metal-enclosed switchgear structure is scientifically and reasonably re-practiced to overcome many shortcomings in current use.

Contents of the invention

Aiming at the deficiencies in the prior art, the present invention provides a box-type fixed AC metal-enclosed switchgear. Compared with the traditional switchgear, the invention has a simple and compact structure, a large reduction in volume and self-weight, and has structural assembly and disassembly functions. It is flexible and convenient, which greatly improves the installation and transfer capacity of switchgear on the one hand, and helps to reduce the difficulty of equipment repair and maintenance construction on the other hand.

In order to achieve the above object, the present invention is achieved through the following technical solutions:

A box-type fixed AC metal-enclosed switchgear, characterized in that it includes a low-voltage box room, a high-voltage box room, a base and a top cover, and the low-voltage box room and the high-voltage box room are both rectangular formed by columns and side plates Cavity structure, the high-voltage chamber is connected to the base and the top cover respectively, the low-voltage chamber is connected to the side of the high-voltage chamber and connected to the top cover, and the low-voltage chamber and the high-voltage chamber are connected to each other , the low-voltage chamber and the high-pressure chamber are provided with at least one partition, the partition is slidably connected to the side plate, and the inner surface and the outer surface of the side plate of the low-voltage chamber and the high-pressure chamber are at least evenly distributed with 4 connection holes, and the connection holes of the low-voltage chamber and the high-voltage chamber are distributed coaxially, and are connected to the connection positioning column through the connection hole; the end of the connection positioning column is connected to the base, and the connection positioning column The top end is connected to the top cover, the base is provided with at least 3 cable holes, the lower surface of the base is provided with a support block, the upper surface of the top cover is provided with a ventilation fan, and the high-voltage box is respectively provided with partitions. Circuit breaker, upper isolating switch, lower isolating switch, grounding switch, current transformer, main busbar and branch busbar, relay protection element, operation switch, indicator light and monitoring equipment are respectively installed in the low-voltage box chamber through the partition.

Further, at the connection between the high-pressure chamber and the top cover, a pressure release device is additionally provided on the top cover.

Further, observation windows are provided on the low-voltage chamber and the high-voltage chamber.

Further, a high-voltage insulating gasket is provided at the contact surface between the low-voltage chamber and the high-voltage chamber.

Compared with traditional switchgear, the present invention has simple and compact structure, greatly reduced volume and self-weight, and has flexible and convenient structural assembly and disassembly, so that on the one hand, the installation and transfer capacity of the switchgear is greatly improved, and on the other hand, it also helps Reduce the difficulty of equipment repair and maintenance construction.

Description of drawings

The present invention is described in detail below in conjunction with accompanying drawing and specific embodiment;

Figure 1 is a schematic diagram of the structure of the present invention.

Detailed ways

In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

A box-type fixed AC metal-enclosed switchgear as shown in Figure 1, including a low-voltage box room 1, a high-voltage box room 2, a base 3 and a top cover 4, the low-voltage box room 1 and the high-voltage box room 2 are composed of a column 5 and the rectangular cavity structure formed by the side plate 6, the high-voltage chamber 2 is connected with the base 3 and the top cover 4 respectively, and the low-voltage chamber 1 is connected with the side surface of the high-voltage chamber 2 and connected with the top cover 4.

In this embodiment, the cavities of the low-voltage chamber 1 and the high-voltage chamber 2 are connected to each other, and at least one partition 7 is provided in the low-voltage chamber 1 and the high-pressure chamber 2, and the partition 7 is slidably connected with the side plate 6 , at least four connecting holes 8 are evenly distributed on the inner surface and outer surface of the side plate 6 of the low-voltage chamber 1 and the high-voltage chamber 2, and the connecting holes 8 of the low-voltage chamber 1 and the high-voltage chamber 2 are coaxially distributed, and through the connecting holes 8 and The connecting positioning column 9 is connected, the end of the connecting positioning column 9 is connected with the base 3, and the top end is connected with the top cover 4.

In this embodiment, at least three cable holes 10 are provided on the base 3 , a support block 11 is provided on the lower surface, and a ventilation fan 12 is provided on the upper surface of the top cover 4 .

In this embodiment, a circuit breaker 13, an upper isolating switch 14, a lower isolating switch 15, a grounding switch 16, a current transformer 17, a main bus 18 and a branch bus 19 are respectively provided in the high-voltage chamber 2 through a partition 7, The low-voltage chamber 1 is provided with a relay protection element 20, an operation switch 21, an indicator light 22 and a monitoring device 23 through a partition 7, respectively.

In this embodiment, at the joint between the high-pressure chamber 2 and the top cover 4 , a pressure release device 24 is additionally provided on the top cover 4 .

In this embodiment, the low-voltage chamber 1 and the high-voltage chamber 2 are provided with observation windows 25 .

In this embodiment, a high-voltage insulating gasket 26 is provided at the contact surface between the low-voltage chamber 1 and the high-voltage chamber 2 .

Compared with traditional switchgear, the present invention has simple and compact structure, greatly reduced volume and self-weight, and has flexible and convenient structural assembly and disassembly, so that on the one hand, the installation and transfer capacity of the switchgear is greatly improved, and on the other hand, it also helps Reduce the difficulty of equipment repair and maintenance construction.

The connection relationship and connection requirements between the circuit components in the low-voltage chamber and the high-voltage chamber are well-known technologies in the technical field, and will not be described in this application document.

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above. Those skilled in the industry should understand that the present invention is not limited by the above-mentioned embodiments. What are described in the above-mentioned embodiments and the description only illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will also have Variations and improvements are possible, which fall within the scope of the claimed invention. The protection scope of the present invention is defined by the appended claims and their equivalents.

Claims (4)

1. A box-type fixed AC metal-enclosed switchgear, characterized in that it includes a low-voltage chamber, a high-voltage chamber, a base and a top cover, and both the low-voltage chamber and the high-voltage chamber are composed of columns and side plates Rectangular cavity structure, the high-voltage chamber is connected with the base and the top cover respectively, the low-voltage chamber is connected with the side of the high-voltage chamber and connected with the top cover, and the space between the low-voltage chamber and the high-voltage chamber is The low-voltage chamber and the high-pressure chamber are provided with at least one partition, and the partition is slidably connected to the side plate. The inner and outer surfaces of the side plates of the low-voltage chamber and the high-pressure chamber are There are 4 connection holes, and the connection holes of the low-voltage chamber and the high-voltage chamber are distributed coaxially, and are connected to the connection positioning column through the connection hole; the end of the connection positioning column is connected to the base, and the connection positioning The top of the column is connected to the top cover, the base is provided with at least 3 cable holes, the lower surface of the base is provided with a support block, the upper surface of the top cover is provided with a ventilation fan, and the high-voltage box is passed through a partition A circuit breaker, an upper isolating switch, a lower isolating switch, a grounding switch, a current transformer, a main busbar and a branch busbar are provided respectively, and relay protection elements, operating switches, indicator lights and monitoring equipment are respectively provided in the low-voltage box chamber through a partition. 2. A box-type fixed AC metal-enclosed switchgear according to claim 1, characterized in that, at the joint between the high-voltage chamber and the top cover, a pressure release device is additionally provided on the top cover. 3. A box-type fixed AC metal-enclosed switchgear according to claim 1, wherein observation windows are provided on the low-voltage chamber and the high-voltage chamber. 4. A box-type fixed AC metal-enclosed switchgear according to claim 1, characterized in that a high-voltage insulating gasket is provided at the contact surface between the low-voltage chamber and the high-voltage chamber.