CN2184181Y

CN2184181Y - High efficiency cooling structure on conductor for arc furnace

Info

Publication number: CN2184181Y
Application number: CN 93218885
Authority: CN
Inventors: 郑景峰
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-07-14
Filing date: 1993-07-14
Publication date: 1994-11-30
Anticipated expiration: 2003-07-14

Abstract

The utility model relates to a high efficiency cooling structure for conductors on arc furnaces, mainly comprising a transformer, a rigid copper pipe, a flexible water-cooled electric cable, the conductor on the arc furnace, an electrode bar, etc., wherein, the conductor on the arc furnace is fixed on the upper end of a raising and falling frame; the electrode bar can be held by the electrode arm and is inserted in the arc furnace. The utility model is characterized in that the conductor on the arc furnace is formed by the way that the electrode arm is arranged in a copper conductor, and the space is remained between the copper conductor and the electrode arm to form a cooling water jacket which can effectively cool the copper conductor. The weight of the conductor on the arc furnace can be reduced, and the driving load of the raising and falling frame can be further decreased.

Description

High efficiency cooling structure on conductor for arc furnace

The utility model relates to electric arc furnaces stove upper conductor structural improvement, relates in particular to a kind of efficient cooling structure of electric arc furnaces stove upper conductor.

Electric arc furnaces upper conductor cooling structure at present commonly used system adopts and passes to recirculated water cool off in copper conductor a, copper conductor a is made of rigidity copper pipe a1 and flexible water-cooled cable a2 two parts, be connected between transformer b and the electrode bar c, and a part of rigidity copper pipe a1 is fixed on (as shown in Figure 1) on the horn d.Said structure and keeps certain distance with horn d top because copper pipe a1 is erected on the support d1 on the horn d, so make rigidity copper pipe a1 produce vibration because of load constantly changes in steelmaking process; Again since the horn of rigidity of support copper pipe a1 also with rocking that support distances f is directly proportional, and general stove upper conductor relative distance g limited (as shown in Figure 2), short circuit produces the problem of damaging electric arc furnaces so very easily cause the contact between array stove upper conductor.

Secondly, on the horn d of said structure, include two layers of steel pipe, several support d1 and rigidity copper pipe a1 member altogether, thereby increase this construction weight, will increase the power of drive electrode crane on foot, thereby cause cost to increase and power wastage.

The utility model purpose is to provide a kind of efficient cooling structure of novel electric arc furnaces stove upper conductor, make conductor reduce vibrations, avoid taking place to be in contact with one another and short circuit between conductor, can have favorable cooling effect again, and alleviate the integral body of conductor, to reduce the driving load of electrode bar elevating mechanism.

Above-mentioned new structure, comprise: transformer, rigidity copper pipe, flexible water-cooled cable, stove upper conductor and electrode bar, it is characterized in that stove upper conductor and horn are combined into overall structure, promptly establish a horn in a copper conductor inside, and between copper conductor and horn, be provided with the space, thereby overcome the defective of original structure with the formation cooling jacket.

Below by drawings and Examples, the utility model is illustrated.

Accompanying drawing:

Fig. 1 is electric arc furnaces device side view commonly used.

Fig. 2 is the vertical view of Fig. 1.

Fig. 3 is a combination schematic diagram of the present utility model.

Fig. 4 is the three-dimensional generalized section of stove upper conductor of the present utility model.

Embodiment:

The utility model structure includes: transformer 1, rigidity copper pipe 2, flexible water-cooled cable 3, stove upper conductor 4 and electrode bar 5, wherein stove upper conductor 4 is fixed on the upper end of rise fall of electrodes frame 6, flexible water-cooled cable 3 is connected with stove upper conductor 4, electrode bar 5 is gripped by stove upper conductor 4 and inserts among the electric arc electric furnace 7, it is characterized in that stove upper conductor and horn are combined into overall structure, wherein stove upper conductor 4 is to form a copper conductor 41 by the sheet conductive copper plate, establish horn 42 in copper conductor 41 inside, and between copper conductor 41 and horn 42, be provided with the space to form cooling jacket 43.

During said structure work, electric current is directed at electrode bar 5 by rigidity copper pipe 2, flexible water-cooled cable 3, stove upper conductor 4 after transformer 1 transformation, is produced electric arc and is fused the scrap iron piece by scrap iron piece one end in electrode bar 5 bottoms and the stove.

The advantage of said structure is: copper conductor 41 itself is the part of stove upper conductor 4, and becomes one with the horn 42 in it, thus can not produce the shortcoming that conductor shakes and rocks on horn, thus avoid being in contact with one another and short circuit between two conductors; Again because copper conductor 41 directly contacts with its interior cooling water and contact-making surface is bigger, so have high efficient cooling effect; This part-structure of the utility model structure electric arc furnaces commonly used is saved material, in light weight in addition, and can alleviate the driving power of crane 6, so that the manufacturing cost of electric arc furnaces and use cost can both decrease.

As seen by above-mentioned, the utility model really can be realized, avoids conductor to produce in electric arc furnaces uses and shakes and rock, so that being in contact with one another and short circuit between conductor taken place; Can realize having favorable cooling effect again, and alleviate the overall weight of conductor, reduce elevating mechanism and drive purposes such as load.

Claims

1, the efficient cooling structure of electric arc furnaces stove upper conductor, comprise transformer (1), rigidity copper pipe (2), flexible water-cooled cable (3), stove upper conductor (4) and electrode bar (5), wherein stove upper conductor (4) is fixed on the upper end of rise fall of electrodes frame (6), flexible water-cooled cable (3) is connected with stove upper conductor (4), electrode bar (5) is gripped by stove upper conductor (4) and inserts among the electric arc electric furnace (7), it is characterized in that stove upper conductor and horn are combined into overall structure, wherein stove upper conductor (4) is to form a copper conductor (41) by the sheet conductive copper plate, establish horn (42) in copper conductor (41) inside, and between copper conductor (41) and horn (42), be provided with the space to form cooling jacket (43).