CN216251657U - Factory branch bus structure applied to humid environment - Google Patents

Abstract

The utility model relates to a branch bus structure for factories, which is applied to a humid environment. At present, the protection grade of a common-box bus is IP54, and various problems of bus insulation reduction, even grounding and the like exist in a humid and rainy environment. A branch bus structure for factory use applied to humid environment comprises: three-phase bus conductor (1) and insulating layer (2), three-phase bus conductor pours in the insulating layer, make three-phase bus conductor and insulating layer structure as an organic whole, three-phase bus conductor and insulating layer component pouring insulated bus entirely, three-phase bus conductor adopts the copper bar, the insulating layer adopts epoxy and quartz sand monolithic concreting to form the insulating layer together, the bottom of the insulating layer of pouring insulated bus entirely is placed on layer board (3), the layer board passes through bolt assembly and lower channel-section steel (4) fixed connection, two hoist and mount poles (5) on the right side of passing of symmetry on the lower channel-section steel. The utility model is applied to the electrical field.

Description

Factory branch bus structure applied to humid environment

Technical Field

The utility model relates to a branch bus structure for factories, which is applied to a humid environment.

Background

At present, a power supply for large and medium thermal power plants is generally taken from a plant high transformer connected with a generator outlet T, a standby power supply is provided by a starting-standby transformer, branch buses between a plant high transformer low-voltage side and a starting-standby transformer low-voltage side and a plant medium-voltage power distribution room main section line are generally connected by adopting a common-box bus scheme, the voltage grade is 6kV-10kV, and the current is 1600A-5000A. The protection grade of the common-box bus is IP54, and the problems of bus insulation reduction, even grounding and the like exist in a humid and rainy environment, so that adverse factors are brought to the safe operation of a power plant unit. The box body is easy to rust and frost in a humid environment, regular maintenance is needed every 1 and 2 years, and the operation and maintenance cost is high during operation.

Disclosure of Invention

The utility model aims to provide a branch bus structure for a plant, which is applied to a humid environment, solves the problem of insulation reduction of a connecting bus in a humid and rainy environment in the prior art, and solves the problems of lower protection level and higher operation and maintenance cost in the prior art.

The above purpose is realized by the following technical scheme:

a branch bus structure for factory use applied to humid environment comprises: the three-phase bus conductor is poured in the insulating layer, so that the three-phase bus conductor and the insulating layer are of an integral structure, the three-phase bus conductor and the insulating layer form a fully poured insulating bus, the three-phase bus conductor adopts copper bars, the insulating layer is integrally poured together by adopting epoxy resin and quartz sand to form the insulating layer, the bottom of the insulating layer of the fully poured insulating bus is placed on a supporting plate, the supporting plate is fixedly connected with a lower channel steel through a bolt assembly, and the lower channel steel symmetrically penetrates through two right hoisting rods;

the supporting plate is connected with a supporting pad, and the supporting pad supports the fully-poured insulated bus;

the top of the hoisting rod penetrates through the upper channel steel and is fixedly connected with the upper channel steel through a nut, and the bottom of the hoisting rod penetrates through the lower channel steel and is fixedly connected with the lower channel steel through a nut.

The branch bus structure for the plant applied to the humid environment is characterized in that a group of rectangular holes with the same structure are formed in the upper surface and the lower surface of an insulating layer of the fully-poured insulating bus.

The branch bus structure for the plant applied to the humid environment is characterized in that the two sections of the fully-cast insulated buses are connected through butt joint plug bushes.

The utility model has the beneficial effects that:

1. according to the utility model, a fully-cast insulated bus is adopted between a high-voltage and low-voltage side of a factory and a factory medium-voltage distribution room bus, all three-phase bus conductors are integrally cast by adopting an insulating casting material, the bus conductors adopt copper bars, the outer surfaces of the conductors are integrally cast together by adopting epoxy resin and special quartz sand to form an insulating layer, the top and the bottom of the insulating layer are arranged to be a penetrating rectangular structure, the integral weight of the insulating layer is reduced, and all buses are cast by the insulating material at intervals according to a fixed distance. The bus is produced by a factory according to a design drawing in a segmented mode, and part of connectors are formed in a cast-in-place mode. The connecting device can be suitable for connecting the factory branch buses in a humid environment and areas with more rainfall when the factory height is changed to the factory branch buses, can effectively avoid the insulation reduction accidents of the factory branch buses caused by the humid environment and the rainfall, and improves the running reliability of the unit.

2. Compared with the traditional common-box bus scheme, the occupied area and the arrangement space of the bus are greatly reduced, and the construction area is effectively saved. The service life cycle of the equipment is long, the maintenance is free during the operation, the operation and maintenance cost is low, the bus is compact in size, the size of the bus is only 20% of that of the traditional common-box bus scheme, the field arrangement space is effectively saved, and the bus is particularly suitable for narrow spaces in fields.

3. The outer surface of the conductor is integrally poured together by adopting epoxy resin and special quartz sand to form an insulating layer, so that the contact between the conductor and the air and the external environment is completely isolated, the influence of a humid environment on the insulation of the bus conductor is completely eliminated, the protection grade of the poured bus can reach IP68, the insulation level of the bus in a humid and rainy environment is greatly improved, and the insulation performance is excellent and stable.

The utility model provides a connecting scheme of the branch buses for the factory, the insulating material has high mechanical strength, wear resistance, impact resistance and aging resistance, can meet the use requirement of more than 50 years, does not need maintenance during operation, and greatly saves the operation and maintenance cost.

5. The utility model can replace the conventional way that the high-voltage and low-voltage side of a thermal power plant is connected with the bus section used by the plant by adopting the common-box bus, and the connection scheme has the defects that the protection grade of the common-box bus can only reach IP54, and the bus insulation is easy to fail in wet and rainy weather.

Description of the drawings:

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a right side view of fig. 1.

Fig. 3 is a schematic structural diagram of a fully-cast insulated bus bar.

Fig. 4 is a top view of fig. 3.

Fig. 5 is a floor plan of fig. 1.

Fig. 6 is a sectional view a-a of fig. 5.

Fig. 7 is a sectional view B-B of fig. 5.

In the figure: 1. three-phase bus conductor, 2, insulating layer, 3, layer board, 4, lower channel-section steel, 5, hoisting rod, 6, supporting pad, 7, go up the channel-section steel, 8, nut, 9, rectangular hole, 10, butt joint plug bush.

The specific implementation mode is as follows:

example 1:

a branch bus structure for factory use applied to humid environment comprises: the three-phase bus bar comprises a three-phase bus bar conductor 1 and an insulating layer 2, wherein the three-phase bus bar conductor is poured in the insulating layer to enable the three-phase bus bar conductor and the insulating layer to be of an integral structure, the three-phase bus bar conductor and the insulating layer form a full-poured insulating bus bar, the three-phase bus bar conductor adopts copper bars, the insulating layer is integrally poured together by adopting epoxy resin and quartz sand to form the insulating layer, the bottom of the insulating layer of the full-poured insulating bus bar is placed on a supporting plate 3, the supporting plate is fixedly connected with a lower channel steel 4 through a bolt assembly, and the lower channel steel symmetrically penetrates through two right hoisting rods 5; the supporting plate is connected with a supporting pad 6, and the supporting pad supports the fully-poured insulated bus; the top of the hoisting rod penetrates through the upper channel steel 7 and is fixedly connected with the upper channel steel through a nut, and the bottom of the hoisting rod penetrates through the lower channel steel and is fixedly connected with the lower channel steel through a nut 8.

Example 2:

according to the branch bus structure applied to the humid environment for the factory in the embodiment 1, the upper surface and the lower surface of the insulating layer of the all-poured insulating bus are provided with a group of rectangular holes 9 with the same structure.

Example 3:

according to the branch bus structure applied to the humid environment in the factory in the embodiment 1 or 2, the two sections of the fully-cast insulated bus are connected through the butt-joint plug bush 10.

Example 4:

the attached figure 5 is that the high height of thermal power plant changes, starts and prepares the conventional position of change and arranges, and the high height of plant changes, starts and prepares to become the low-voltage side and connects to the station with medium voltage electricity distribution room and adopt the busbar connection of pouring, and the busbar is arranged along the wall body along the main building outside, and the wall gets into the medium voltage electricity distribution room in medium voltage electricity distribution room position.

Claims (3)

1. A branch bus structure for factory use applied to humid environment comprises: three-phase bus conductor and insulating layer, characterized by: the three-phase bus conductor is poured in the insulating layer, so that the three-phase bus conductor and the insulating layer form an integral structure, the three-phase bus conductor and the insulating layer form a full-poured insulating bus, the three-phase bus conductor adopts copper bars, the insulating layer is integrally poured together by adopting epoxy resin and quartz sand to form the insulating layer, the bottom of the insulating layer of the full-poured insulating bus is placed on a supporting plate, the supporting plate is fixedly connected with a lower channel steel through a bolt assembly, and the lower channel steel symmetrically penetrates through two right hoisting rods;

the supporting plate is connected with a supporting pad, and the supporting pad supports the fully-poured insulated bus;

the top of the hoisting rod penetrates through the upper channel steel and is fixedly connected with the upper channel steel through a nut, and the bottom of the hoisting rod penetrates through the lower channel steel and is fixedly connected with the lower channel steel through a nut.

2. The service branch busbar structure for wet environments according to claim 1, wherein: a group of rectangular holes with the same structure are formed in the upper surface and the lower surface of an insulating layer of the fully-poured insulating bus.

3. The service branch busbar structure for wet environments according to claim 1, wherein: the two sections of the fully-poured insulated buses are connected through butt joint plug bushes.

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