CN105305287A - Busbar chamber pressure relief apparatus and PT feeder line cabinet using same - Google Patents

Abstract

The invention relates to high-voltage switch equipment, in particular to a busbar chamber pressure relief apparatus and a PT feeder line cabinet using the same, wherein the busbar chamber pressure relief apparatus comprises a busbar chamber pressure relief channel and a voltage transformer chamber arranged on the back side of the busbar chamber pressure relief channel; the busbar chamber pressure relief channel and the voltage transformer chamber are isolated from each other; pressure relief ports are formed in the top, the left side and/or the right side of the busbar chamber pressure relief channel; and the PT feeder line cabinet with a circuit comprises a busbar chamber arranged at the upper part of the cabinet body, and also comprises the busbar chamber pressure relief apparatus. The structure does not influence the arrangement of the busbar chamber pressure relief channel, and can keep out a space for the installation of the voltage transformer; compared with the prior art, the installation height of the voltage transformer is increased, so that the voltage transformer is convenient to install; the problem of possible influence on the voltage transformer from the pressure relief apparatus is avoided; and meanwhile, the problem that the voltage transformer cannot be installed in a transformer box due to an overhigh height caused by that the pressure relief channel is arranged on the top of the cabinet body for installing the voltage transformer is avoided as well.

Description

Pressure relief device for busbar room and PT feeder cabinet using the device

technical field

The invention relates to a high-voltage switchgear, in particular to a pressure relief device for a bus room and a PT feeder cabinet using the device.

Background technique

With the continuous development of switch technology, the application of inflatable cabinets in power systems is becoming more and more common. The inflatable cabinet generally includes a busbar room, a cable room, a circuit breaker room, and a control room. Above the switch cabinet, the cable room is set under the busbar room, and the transformer is set in the cable room. In order to ensure the safe operation of the equipment, the busbar room and cable room are equipped with pressure relief devices and corresponding pressure relief channels. Due to the heavy weight and large volume of the transformer, many people are required to install it with the help of engineering trolleys at the project site. The installation is difficult, the operation efficiency is low, and the labor intensity of the workers is high.

The PT feeder cabinet with line is also a kind of inflatable cabinet. The existing PT feeder cabinet with line is a kind of voltage transformer cabinet. The structure of the cabinet is similar, but the circuit breaker room is set under the busbar room, and the cable room is set under the circuit breaker room. The position is lower and the space is smaller, so the problem when installing the voltage transformer is more prominent. If the voltage transformer is installed above the circuit breaker room, affected by the pressure relief channel of the bus room, when an arcing fault occurs in the bus room, the hot and overpressure gas in the pressure relief channel of the bus room can easily cause damage to the voltage transformer.

Contents of the invention

The purpose of the present invention is to provide a pressure relief device for a busbar room and a PT feeder cabinet with a line PT feeder using the device, so as to solve the problem that in the prior art, the voltage transformer is arranged below the circuit breaker room and is difficult to install and is arranged above the circuit breaker room. Susceptibility to busbar compartment pressure relief problems.

The technical scheme adopted by the busbar chamber pressure relief device in the present invention is: the busbar chamber pressure relief device includes a busbar chamber pressure relief channel and a voltage transformer chamber arranged on the rear side of the busbar chamber pressure relief channel, and the busbar chamber pressure relief channel The pressure channel and the voltage transformer room are isolated from each other, and the top, left side and/or right side of the busbar room pressure relief channel are provided with pressure relief ports.

The left and right sides of the bus chamber pressure relief channel are provided with two or more spaced apart pressure relief through holes, and the pressure relief port is formed by the pressure relief through holes.

The pressure relief through holes on the left and right sides of the pressure relief channel of the busbar chamber are arranged symmetrically.

The voltage transformer chamber is detachably connected to the pressure relief channel of the busbar chamber.

The voltage transformer chamber includes a hollow frame and a rear sealing plate detachably arranged at the rear of the hollow frame.

The rear sealing plate at the rear of the voltage transformer chamber has a convex part, and a transformer accommodating space is provided in the convex part.

An explosion-proof membrane is provided between the busbar chamber and the pressure relief channel of the busbar chamber.

The technical solution adopted by the PT feeder cabinet with lines in the present invention is: the PT feeder cabinet with lines includes a busbar room arranged on the upper part of the cabinet body, and also includes a busbar room pressure relief device. The busbar room pressure relief device is the above-mentioned busbar room discharge pressure device.

Further, the busbar room, busbar room pressure relief channel and voltage transformer room are all arranged above the circuit breaker room, and the cable room with line PT feeder cabinet is arranged below the circuit breaker room.

Further, the circuit breaker chamber is provided with a circuit breaker pressure relief passage, and the circuit breaker pressure relief passage is arranged behind the circuit breaker chamber and below the voltage transformer chamber.

The present invention adopts the above-mentioned technical scheme, and the pressure relief device of the busbar room is installed behind the busbar room, so that the PT feeder cabinet with lines adopts a structure in which the busbar room, the pressure relief channel of the busbar room and the voltage transformer room are arranged in sequence from front to back, and the pressure relief of the busbar room There are pressure relief ports on the top, left and/or right sides of the passage, which will not affect the layout of the pressure relief passage in the bus room, and can also leave space for the installation of voltage transformers. Compared with the existing technology, the The installation height of the voltage transformer is improved, the installation is convenient, and the problem that the pressure relief of the pressure relief channel may affect the voltage transformer is avoided. The height is too high to fit into the box change problem.

Description of drawings

Fig. 1 is the front view of the overall structure of the PT feeder cabinet with lines of the present invention;

Figure 2 is a perspective view of the PT feeder cabinet with lines in Figure 1 after the control room, cable room, and circuit breaker room pressure relief channels are removed (the right sealing plate of the frame and the rear sealing plate of the frame are in an open state);

Fig. 3 is the front view of Fig. 2;

Fig. 4 is the sectional view of Fig. 3;

Fig. 5 is a schematic diagram of the combination of PT feeder cabinets with lines according to the present invention.

The names corresponding to the reference signs in the figure are: 10-control room, 20-cable room, 30-circuit breaker room, 31-circuit breaker room pressure relief channel, 40-busbar room, 50-busbar room pressure relief channel, 51 -Pressure relief through hole, 52-Explosion-proof membrane, 60-Separator, 70-Voltage transformer room, 71-Hollow frame, 72-Frame top plate, 73-Frame bottom plate, 74-Frame left seal plate, 75-Frame right seal board, 76-frame rear sealing plate, 80-voltage transformer.

detailed description

An embodiment of the PT feeder cabinet with lines of the present invention is shown in Figures 1 to 5, including a control room 10, a bus room 40, a circuit breaker room 30, a cable room 20 and a bus room pressure relief device arranged behind the bus room 40, The busbar room pressure relief device is divided into front and rear parts, the front part is the busbar room pressure relief channel 50, and the rear part is the voltage transformer room 70. The busbar chamber 40 and the pressure relief device for the busbar chamber are arranged in front and back and are arranged above the circuit breaker chamber 30 at the same time, the cable chamber 20 is arranged below the circuit breaker chamber 30, and the control room 10 is arranged in front of the busbar chamber 40, the circuit breaker chamber 30 and the cable chamber 20 .

The busbar chamber pressure relief passage 50 is arranged corresponding to the busbar chamber 40 , and an explosion-proof membrane 52 is provided on the side wall between the busbar chamber 40 and the busbar chamber pressure relief passage 50 . The voltage transformer chamber 70 is arranged on the rear side of the bus chamber pressure relief passage 50 and is isolated from the bus chamber pressure relief passage 50 by a partition 60 . Two pressure relief through-holes 51 are respectively provided on the left and right sides of the bus chamber pressure relief channel 50 to form a pressure relief port. In order to facilitate the connection of cabinets, the pressure relief through holes 51 on the left and right sides of the pressure relief channel 50 of the bus room are arranged symmetrically, so that they can match and correspond to each other when the cabinets are combined.

The voltage transformer chamber 70 is fixed on the circuit breaker chamber 30 and the pressure relief channel 50 of the busbar chamber by screws. It adopts a frame structure, including a hollow frame 71 and a frame rear sealing plate 76 arranged at the rear of the hollow frame 71. The hollow frame 71 The frame top plate 72, the frame bottom plate 73, the frame left cover plate 74 and the frame right cover plate 75 are fixed together by rivets to form a whole, the whole can be disassembled freely, the overall structure is simple and compact, and the adopted frame structure saves materials. The voltage transformer 80 is fixed in the voltage transformer chamber 70, wherein the rear cover plate 76 of the frame is provided with a convex part, and there is a transformer accommodation space in the rear convex part, and the rear part of the voltage transformer 80 extends into the transformer accommodation space In this way, the front and rear dimensions of the cabinet can be reduced, and the installation of the voltage transformer 80 can be facilitated.

A circuit breaker chamber pressure relief passage 31 is arranged behind the circuit breaker chamber 30, which is separated from the busbar chamber pressure relief passage.

When installing the voltage transformer 80 on site, first remove the frame rear sealing plate 76, and then connect the whole body composed of the hollow frame 71, the frame top plate 72, the frame bottom plate 73, the frame left sealing plate 74, and the frame right sealing plate 75 with the busbar room. The pressure relief channel 50 is separated, and then the voltage transformer 80 is inserted and fixed, and then the removed part is fixed with screws. When an arcing fault occurs in the busbar chamber 40 , the busbar chamber pressure relief channel 50 discharges the high-pressure gas from both sides, and the partition plate 60 prevents the high-pressure gas from causing damage to the voltage transformer 80 .

As shown in Figure 5, in the engineering site, the feeder cabinets can be arranged in a cabinet-combining manner. The left and right sides of the busbar room pressure relief channel 50 are connected to the busbar room pressure relief channels 50 of the other two same feeder cabinets, and the voltage transformer room The left and right sides of the feeder cabinet are also connected to the voltage transformer chambers of other feeder cabinets. At this time, the pressure relief ports of the busbar chamber pressure relief channels 50 of adjacent feeder cabinets are connected to each other, which is convenient for pressure relief to both sides.

An embodiment of the busbar chamber pressure relief device in the present invention is the busbar chamber pressure relief device described in the above embodiment of the PT feeder cabinet with lines, which will not be repeated here.

In the above-mentioned embodiments, the pressure relief ports are arranged on the left and right sides of the pressure relief channel 50 in the bus room, and each side includes two spaced apart pressure relief through holes 51. In other embodiments of the present invention, the pressure relief ports It can also be arranged on the top of the pressure relief channel 50 in the busbar room. In the case that cabinets do not need to be combined, the pressure relief port can only be set on one side of the left and right directions, and the pressure relief through hole 51 can also be replaced by other forms. For example, a whole through hole or more than three through holes.

In the above embodiments, the voltage transformer chamber 70 adopts a frame structure, including a hollow frame 71 and a sealing plate, and the sealing plate can be disassembled. In other embodiments, the voltage transformer chamber 70 can also adopt other forms, such as a semi-closed structure , so that one side can be opened to load and unload the voltage transformer.

Claims (10)

1. The busbar room pressure relief device is characterized in that: it includes a busbar room pressure relief channel and a voltage transformer room arranged on the rear side of the busbar room pressure relief channel, and the busbar room pressure relief channel and the voltage transformer room are isolated from each other, and pressure relief ports are provided on the top, left and/or right sides of the pressure relief channel of the busbar chamber. 2. The busbar room pressure relief device according to claim 1, characterized in that: the left and right sides of the busbar room pressure relief channel are provided with two or more spaced apart pressure relief through holes, and the pressure relief port is formed by The pressure relief through hole is formed. 3. The busbar chamber pressure relief device according to claim 2, characterized in that: the pressure relief through holes on the left and right sides of the busbar chamber pressure relief passage are arranged symmetrically. 4. The busbar chamber pressure relief device according to claim 1, characterized in that: the voltage transformer chamber is detachably connected to the busbar chamber pressure relief channel. 5. The busbar room pressure relief device according to claim 4, characterized in that: the voltage transformer room comprises a hollow frame and a rear sealing plate detachably arranged at the rear of the hollow frame. 6 . The pressure relief device for busbar room according to claim 4 , characterized in that: the rear sealing plate at the rear of the voltage transformer room has a convex part, and there is a transformer accommodation space in the convex part. 7 . 7. The busbar room pressure relief device according to claim 1, characterized in that: an explosion-proof membrane is provided between the busbar room and the busbar room pressure relief channel. 8. PT feeder cabinet with lines, including a busbar room arranged on the upper part of the cabinet, characterized in that it also includes a busbar room pressure relief device, and the busbar room pressure relief device is described in any one of claims 1-7 Pressure relief device for the busbar room. 9. The PT feeder cabinet with lines according to claim 8, characterized in that: the busbar room, the pressure relief channel of the busbar room and the voltage transformer room are all arranged above the circuit breaker room, and the cables of the PT feeder cabinet with lines The chamber is arranged below the circuit breaker chamber. 10. The PT feeder cabinet with lines according to claim 8, characterized in that: the circuit breaker room is provided with a circuit breaker pressure relief channel, and the circuit breaker pressure relief channel is arranged behind the circuit breaker room and set at the voltage Below the transformer compartment.