CN2522402Y

CN2522402Y - Super-high-temp. lifting electromagnet

Info

Publication number: CN2522402Y
Application number: CN 02210141
Authority: CN
Inventors: 赵光国
Original assignee: Fushun Longi Magnet Co Ltd
Current assignee: Fushun Longi Magnet Co Ltd
Priority date: 2002-02-05
Filing date: 2002-02-05
Publication date: 2002-11-27
Anticipated expiration: 2012-02-05

Abstract

The utility model discloses a super-high-temperature lifting electromagnet which is used in the continuous casting and rolling process in the metallurgical industry. The lifting electromagnet includes a magnetic frame with an non magnetic end guard plate and a fundic magnetic pole, and a winding. The utility model is characterized in that the winding is arranged in a hermetic box by insulation treatment; the hermetic box is arranged in the magnetic frame and a clearance is left between the hermetic box and the magnetic frame. A cold-air entrance and a heat quantity exit are arranged on the non magnetic end guard plate of the magnetic frame. The utility model adopts the technical scheme. When the lifting electromagnet hoists a hot rolled object, the cold-air enters the magnetic frame as the lifting electromagnet is working, so the temperature of the winding decreases, the hot state current increases and the suction force boosts, which greatly prolongs the service life. The utility model completely meets the requirement of the continuous casting and rolling process in the metallurgical industry.

Description

Super high-temperature lifting electromagnet

One, technical field

The utility model relates to a kind of hoisting sling that the metallurgy industry casting and rolling process uses---super high-temperature lifting electromagnet that is used for.

Two, background technology

Along with developing rapidly of China's metallurgy industry, also more and more higher in the requirement of aspect of performance for lifting electromagnet.The Applicable temperature of the high temperature resistant electromagnet of Shi Yonging is within ℃ scope of 100 ℃＜t＜500 in the past, therefore, its structure still adopts the structure of passing through usefulness, being about to coil, to be placed on magnetic be in the framework, be fixing (see figure 1) between the framework with potting compound with coil and magnetic then, just make and revise aspect the winding wire at insulating material and employing fire coat aluminium strip (paper tinsel).

At present and since control golden industry on the technology, constantly undergo technological transformation on the equipment and innovate, casting and rolling process is generally applied, the steel billet that casts out is at hot rolling section bar, sheet material, dish circle or the like just sent to.Do like this and improved the initial temperature that steel billet is heated for the second time, saved a large amount of energy.Therefore, this just need can be suitable for this technological requirement as the lifting electromagnet of hoisting sling, the temperature of absorbate body is brought up to 700 ℃ from original 500 ℃, particularly for produce the rail industry in the optimum temperature that " dehydrogenation " arranged on the technology between 680--700 ℃, this just requires lifting electromagnet the rail of this temperature directly can be delivered to finish dehydrogenation in " burial pit " to handle.

Because of F ∝ (IW) ², F is the suction of electromagnet, and I is the electric current in the coil, and W is a coil turn.When coil turn was constant, suction was directly proportional with current squaring.When the coil temperature rising, then resistance increases, and electric current just diminishes, and so, the suction of electromagnet reduces greatly.Therefore, this has just determined the high temperature resistant electromagnet that uses in the past because radiating effect is bad, the incompatible requirement of metallurgy industry casting and rolling process now.

Three, summary of the invention

The purpose of this utility model provides a kind of good heat dissipation effect, can be applicable to the super high-temperature lifting electromagnet that the metallurgy industry casting and rolling process uses.This lifting electromagnet comprises that the magnetic with non magnetic endshield, end magnetic pole is framework and coil.Being characterized in that coil is handled through insulation is loaded in the seal box, and seal box being loaded on magnetic again is in the framework, and seal box and magnetic are to leave the gap between framework; Be to be provided with cold air inlet port and heat discharge orifice on the non magnetic endshield of framework at magnetic.The utility model adopts technique scheme, after this lifting electromagnet is sling hot rolling steel billet (or other absorbate), central and the air caused by relative motion circulating air in operation, the cold air inlet port of cold air below lifting electromagnet entered, hot gas is discharged from top discharge orifice, coil temperature is reduced, and it is big that hot electric current becomes, and suction increases greatly.Prolonged the service life of electromagnet, the temperature that makes the absorbate body is brought up to more than 700 ℃ by original 500 ℃, meets the requirement of metallurgy industry casting and rolling process fully.

Four, description of drawings

Fig. 1 is the structural representation of the high temperature resistant electromagnet that uses in the past;

Fig. 2 is the A-A cutaway view of Fig. 1;

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

Fig. 4 is the B-B cutaway view of Fig. 3;

Fig. 5 is the structure of seal box scheme drawing among Fig. 3;

Fig. 6 is the C-C cutaway view of Fig. 5.

Five, the specific embodiment

Magnetic shown in Fig. 3, Fig. 4 is that framework 1 adopts the welding of Q234-A material to make, and magnetic is on the framework 1 hanger to be arranged, and magnetic is the non magnetic endshield 2 of the side of framework 1 for employing 1Cr18Ni9Ti material.Seal box 3 shown in Fig. 5, Fig. 6 is made of inside and outside coaming plate 11,12 and base plate, loam cake, and the inside and outside coaming plate of seal box 3 is provided with fixed block 13.The insulation processing of coil 5 is meant Kapton and insulcrete is cemented in bottom and side in the seal box 3 with epoxy resin, the sticking again one deck asbestos board in bottom, pack into after treatment coil 5 in the seal box 3 and use the potting compound embedding, spread Kapton and insulcrete then, and cement with epoxy resin, with upper cover plate and sealing box body solder together, the outlet of the upper cover plate of seal box has out wire casing again.4 is insulating barrier among the figure.With the magnetic that it is good that packaged seal box 3 places welding is framework 1, seal with backplate of the non

magnetic end

7,6 for magnetic be the end magnetic sheet of framework 1 bottom.For the heat that coil 5 sends and the heat of end magnetic pole 6 conduction are in time distributed, seal box 3 and magnetic are to leave the gap between the framework 1, and its gap is about 10mm.Because of seal box 3 sides have fixed block 13, when installing, its side play reserved, upper and lower gap is adjusted with cushion block 14, magnetic is that the upper and lower part of the non magnetic end expansion plate 2 of framework 1 side has heat discharge orifice 10 and cold air inlet port 9 respectively, just can to enter magnetic from the cold air inlet port 9 of bottom be in the framework to cold air like this, carries out interchange of heat the heat of generation is discharged from the heat discharge orifice on top.8 is the absorbate body.

The utility model is reasonable in design.The super high-temperature lifting electromagnet that adopts the technical solution of the utility model to make, compare with the high temperature resistant lifting electromagnet that uses in the past, show through test results, under the identical situation of coil turn, temperature can reduce by 50%, then suction can improve about 20%, can reach more than 3 times of past its service life.

Claims

1, super high-temperature lifting electromagnet, comprise that the magnetic with non magnetic endshield (2), end magnetic pole (6) is framework (1) and coil (5), it is characterized in that coil 5 is loaded in the seal box (3) through the insulation processing, again seal box (3) being loaded on magnetic is in the framework 1, and seal box (3) and magnetic are to leave the gap between framework (1); Be to be provided with cold air inlet port (9) and heat discharge orifice (10) on the non magnetic endshield (2) of framework (1) at magnetic.

2, super high-temperature lifting electromagnet according to claim 1 is characterized in that described seal box (3) is made of inside and outside coaming plate (11), (12) and base plate, loam cake, and all there is fixed block (13) on the surface, medial and lateral of seal box (3).