CN2286935Y - Fire-retardant bus slot - Google Patents

Abstract

The utility model relates to a fire-retardant bus slot, comprising a conductive copper bar, a threaded bolt with a casing, a joint cap plate, a slot body, etc., wherein, the slot body comprises a slot cover and a casing; both the slot cover and the casing have a sandwich structure: an outer layer, a core layer and an inner layer. The core layers of the slot cover and the casing are thermal baffles of a thermal expansion type; an interval is arranged between the thermal baffles and the outer layers; both the outer layers of the thermal baffles and the casing are provided with heat radiation holes. The bus slot has a good heat radiation performance under a normal condition, which is favorable for the running of the circuit. A copper bar of close arranging type can be adopted, which reduces the electric energy loss. When a fire hazard occurs, the thermal baffles of a thermal expansion type expand and isolate heat and electricity can be supplied for some time at the initial stage of the fire hazard, providing power for fighting the fire.

Description

Fire resistant busbar

The utility model relates to a kind of fire resistant busbar, and particularly a kind of fire initial stage can continue for some time the fire resistant busbar of power supply.

At present, the bus duct of known transmission of electric energy is not fire-resistant, can make whole circuit outage when meeting fire and causing short circuit, to enterprise produce, people's lives bring the tremendous economic loss, therefore, be necessary to provide a kind of fire resistant busbar to replace flame retardant cable and common bus duct.

The purpose of this utility model provides a kind of fire resistant busbar, and this bus duct has fire resistance, in energy continued power a period of time at fire initial stage, and under normal circumstances has heat dispersion preferably.

For achieving the above object, the utility model adopts following structure, and fire resistant busbar comprises conducting copper, the bolt of tape insulation sleeve pipe, joint cover plate, cell body, described cell body comprise groove lid and housing, the groove lid joins with housing, described groove lid and housing are sandwich structure, are divided into skin, sandwich layer and internal layer, and their sandwich layer is the thermal expansion type thermal insulation board, thermal insulation board and the skin gap that is separated by, the skin of thermal insulation board, housing all has louvre.

Described thermal expansion type thermal insulation board is the sheet material of being made up of the heat insulation expanded perlite of light-weight refractory, amino resins, blowing agent, polyalcohol, polyphosphate, thickness of slab 5-25mm.

The utility model is described in further detail below in conjunction with accompanying drawing

Fig. 1: the utility model cross-sectional view

Fig. 2: the enlarged drawing of A among Fig. 1

Fig. 3: the utility model copper bar connection diagram

Among Fig. 1,1,8 are respectively the last groove lid and the following groove lid of bus duct, on, following groove is stamped the support 2 as internal layer, 7, they form sandwich, its sandwich layer is the thermal expansion type thermal insulation board, thermal insulation board thickness between 5-25mm, on, following groove covers and is connected as housing outer field 3, and housing also is to be sandwich structure, its internal layer has a strutting piece 5, sandwich layer as sandwich also is a thermal expansion type thermal insulation board 4, all leaves between sandwich layer in the above-mentioned sandwich structure and the skin at interval, and gap size and thickness of slab ratio are controlled between the 0.5-2, central layer has the hole, the housing skin also has the hole, and various ways can be adopted in the hole, and for example venetian blind type is asked for an interview Fig. 2.

Among Fig. 3,6 is copper bar, and 9 is the bolt of tape insulation sleeve pipe, and 10 is side plate.

Above-mentioned thermal expansion type thermal insulation board can be by the heat insulation expanded perlite of light-weight refractory, expanded vermiculite, to float pearl be main body, adopt a kind of in polyvinyl acetate, neoprene emulsion, amino resins, the EVA resin etc. or their mixture as bonding agent, be added with the sheet material that blowing agent and polyalcohol polyphosphate are processed into again.

The utility model advantage: this bus groove is the sandwich type cell body, and the thermal expansion type thermal insulation board is met fiery sending out in the cell body Thermal expansion plays heat insulation effect, can continue one section power-on time at during Initial Stage of Fire because the skin of housing, every Hot plate all has the heat radiation hole, and under normal circumstances perfect heat-dissipating is conducive to the circuit operation, and this bus groove can make Copper row dense arrangement reduces electric energy loss.

Claims (3)

1, a kind of fire resistant busbar, it comprises conducting copper, the bolt of tape insulation sleeve pipe, joint cover plate, cell body, it is characterized in that described cell body comprises groove lid and housing, the groove lid joins with housing, and described groove lid and housing are sandwich structure, be divided into skin, sandwich layer and internal layer, their sandwich layer is the thermal expansion type thermal insulation board, thermal insulation board and the skin gap that is separated by, and the skin of thermal insulation board, housing all has louvre.

2, fire resistant busbar according to claim 1 is characterized in that: the sheet material of described thermal expansion type thermal insulation board for being made up of the heat insulation expanded perlite of light-weight refractory, amino resins, blowing agent, polyalcohol, polyphosphate, thickness of slab 5-25mm.

3, fire resistant busbar according to claim 1 and 2 is characterized in that: described thermal insulation board and outer standoff distance are 0.5-2 times of thickness of slab.

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