CN2567861Y

CN2567861Y - V-shaped fin type explosion-proof frequency transformer

Info

Publication number: CN2567861Y
Application number: CN02243411U
Authority: CN
Inventors: 许开成; 李英; 陆文涛; 赵颖秋
Original assignee: Tangshan Kaicheng Electrical Equipment Co ltd
Current assignee: CITIC HIC Kaicheng Intelligence Equipment Co Ltd
Priority date: 2002-08-02
Filing date: 2002-08-02
Publication date: 2003-08-20
Anticipated expiration: 2012-08-02

Abstract

The utility model discloses a V-shaped fin type explosion-proof frequency transformer, which belongs to the explosion-proof frequency transforming device which is matched with the operation apparatuses of dangerous coal mine environments with coal dust and gas explosion and other worksites. An explosion-proof casing of the utility model is divided into an explosion-proof main cavity, an explosion isolating wiring cavity, and an intrinsically safe wiring cavity, the utility model is characterized in that a back plate of the explosion-proof main cavity is fixed with IGBT and a rectification bridge through an aluminum plate; the back plate is additionally fixed with a triggering plate, an IGBT driving plate and a transformer; a partition board and a cover plate are respectively fixed with a rectification plate, a power panel, a PIB testing board, and a main plate; a capacitance group is arranged on a base plate of the explosion-proof main cavity; the positive and the negative electrode plates of the capacitance group are copper plates; the back plate and the outer sides of a left side plate, a right side plate of the explosion-proof main cavity are provided with V-shaped fins. The utility model has the advantages of reasonable structure, small loop distributed inductance, good radiation effect and explosion-proof safety.

Description

V-type heat radiation type explosion-proof frequency converter

Technical field

The utility model relates to a kind of V-type heat radiation type explosion-proof frequency converter, belongs to and has in the colliery hazardous environment of coal dust, gas, blast and the matching used flame-proof converter device of other workplace implement.

Background technology

China's universal frequency converter kind is a lot of at present, and technology is comparative maturity also.But the fixed position of its power device is unreasonable, and improved cross connect is many, and capacitance group adopts copper conductor to connect in addition, control loop disturbs big, its radiating mode is general to adopt air-cooled and water-cooled, because ventilating fan can not be installed in the down-hole, so air-cooled for the difficult realization of underground work; And water-cooled not only will have the water source, and needs the dirty equipment of special-purpose row, system complex, and therefore, universal frequency converter is if be installed in down-hole and other inflammable and explosive place, and heat dissipation problem is difficult to solve, and explosion-proof performance is poor, is easy to accidents caused.

Summary of the invention

The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of power device position to be provided with rationally, the control loop distributed inductance is little, good heat dissipation effect, V-type heat radiation type explosion-proof frequency converter rational in infrastructure, safe in utilization.

The purpose of this utility model is achieved in that its explosion-proof lower box is an explosion insulation main cavity, and upper right quarter is an explosion insulation connecting line cavity, and upper left quarter is the intrinsic safety wire connection cavity; The backboard inwall of explosion insulation main cavity is the plane, and surface roughness is 3.2, is fixed with aluminium sheet on it, IGBT and rectifier bridge are fixed on the aluminium sheet, IGBT is positioned at the below of backboard, and rectifier bridge is positioned at the upper left side of backboard, between aluminium sheet and backboard, all scribble one deck heat-conducting silicone grease between IGBT and rectifier bridge and aluminium sheet; Trigger board is fixed on the rectifier bridge below, and the drive plate of IGBT is fixed on the IGBT top, and transformer is fixed on the upper right side of backboard; The left and right sides of backboard is provided with side plate, is fixed with dividing plate on the biside plate, and the right front of dividing plate is fixed with cover plate, the upper left side of dividing plate is fixed with cowling panel, the lower left is fixed with power panel, and the right side is fixed with the PIB check-out console, and mainboard is fixed on the cover plate of dividing plate right front; Electric capacity component triplex row, four of every row are fixed on the base plate of explosion insulation main cavity, and its positive plate and negative plate are copper coin, and are arranged in parallel, and are provided with insulation board between positive and negative pole plate; The backboard of explosion insulation main cavity and the left and right side plate outside are set with the V-type fin that is arranged in parallel; The inside of V-type fin is cavity.

Compared with prior art, advantage of the present utility model is:

1, the fixed position of power device is reasonable, has avoided major loop and control loop intersection cabling, and the capacitance group positive/negative plate adopts the parallel connection of copper coin, so circuit distributing inductance is little;

2, because power device is close on the backboard that is fixed on explosion-proof main chamber, and three sides are provided with the V-type fin, therefore, heat is easy to distribute, and does not need water-cooled air-cooled, and is economical convenient;

3, rational in infrastructure, to be convenient to make, explosion-proof performance is good, and is safe and reliable.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is a plan structure schematic diagram of the present utility model;

Fig. 3 is a side-looking structural representation of the present utility model;

Fig. 4 is that A of the present utility model is to partial view.

Embodiment

Below in conjunction with drawings and Examples in detail the utility model is described in detail.

The utility model comprises explosion-proof casing 1, rectifier bridge 6, transformer 5, IGBT9, cowling panel 21, power panel 27, mainboard 20, capacitance group 11, and its explosion-proof casing 1 bottom is an explosion insulation main cavity 4, and upper right quarter is an explosion insulation connecting line cavity 2, and upper left quarter is an intrinsic safety wire connection cavity 3; Backboard 19 inwalls of explosion insulation main cavity 4 are the plane, surface roughness is 3.2, be fixed with aluminium sheet 18 on it, IGBT9 and rectifier bridge 6 are fixed on the aluminium sheet 18, IGBT9 is positioned at the below of backboard 19, rectifier bridge 6 is positioned at the upper left side of backboard 19, and 18 of 19 of aluminium sheet 18 and backboards, IGBT9 and rectifier bridge 6 and aluminium sheets all scribble one deck heat-conducting silicone grease 26; Trigger board 12 is fixed on rectifier bridge 6 belows, and the drive plate 8 of IGBT9 is fixed on the IGBT9 top, and transformer 5 is fixed on the upper right side of backboard 19; The left and right sides of backboard 19 is provided with side plate 13, be fixed with dividing plate 14 on the biside plate 13, the right front of dividing plate 14 is fixed with cover plate 16, the upper left side of dividing plate 14 is fixed with cowling panel 21, the lower left is fixed with power panel 27, the right side is fixed with PIB check-out console 15, and mainboard 20 is fixed on the cover plate 16 of dividing plate 14 right fronts; 11 fens triplex rows of capacitance group, four of every row are fixed on the base plate 10 of explosion insulation main cavity 4, and its positive plate 23 and negative plate 25 are copper coin, and are arranged in parallel, and 23,25 are provided with insulation board 24 between positive and negative pole plate; The backboard 19 of explosion insulation main cavity 4 and left and right side plate 22 outsides are set with the V-type fin 7 that is arranged in parallel; The inside of V-type fin 7 is cavity 17.

During the utility model work, the heat that IGBT9 and rectifier bridge 6 constant power devices send, by aluminium sheet 18 and heat-conducting silicone grease 26, reach V-type fin 7, because of being cavity 17 in the middle of the V-type fin 7, hot-air moves upward along cavity 17, and cold air is then constantly replenished by the bottom, formation air stream reaches better heat radiating effect.

The utility model is applicable in the colliery hazardous environment of coal dust, gas, blast and other workplace, is particularly suitable for the following low power frequency conversion device of 45KW.

Claims

1, a kind of V-type heat radiation type explosion-proof frequency converter comprises explosion-proof casing, rectifier bridge, transformer, IGBT, cowling panel, power panel, mainboard, capacitance group, it is characterized in that:

A, explosion-proof lower box are explosion insulation main cavity, and upper right quarter is an explosion insulation connecting line cavity, and upper left quarter is the intrinsic safety wire connection cavity;

The backboard inwall of b, explosion insulation main cavity is the plane, surface roughness is 3.2, be fixed with aluminium sheet on it, IGBT and rectifier bridge are fixed on the aluminium sheet, IGBT is positioned at the below of backboard, rectifier bridge is positioned at the upper left side of backboard, between aluminium sheet and backboard, all scribble one deck heat-conducting silicone grease between IGBT and rectifier bridge and aluminium sheet;

C, trigger board are fixed on the rectifier bridge below, and the drive plate of IGBT is fixed on the IGBT top, and transformer is fixed on the upper right side of backboard;

The left and right sides of d, backboard is provided with side plate, is fixed with dividing plate on the biside plate, and the right front of dividing plate is fixed with cover plate, the upper left side of dividing plate is fixed with cowling panel, the lower left is fixed with power panel, and the right side is fixed with the PIB check-out console, and mainboard is fixed on the cover plate of dividing plate right front;

E, electric capacity component triplex row, four of every row are fixed on the base plate of explosion insulation main cavity, and its positive plate and negative plate are copper coin, and are arranged in parallel, and are provided with insulation board between positive and negative pole plate;

The backboard of f, explosion insulation main cavity and the left and right side plate outside are with being provided with the V-type fin that is arranged in parallel surely;

2, a kind of V-type heat radiation type explosion-proof frequency converter according to claim 1, the inside that it is characterized in that the V-type fin is cavity.