CN2107472U

CN2107472U - Free expansion gap seal ring for rotary furnace flue

Info

Publication number: CN2107472U
Application number: CN 91231081
Authority: CN
Inventors: 姜金陵; 朱继宏; 朱志强; 蒋慧玲; 李昌德
Original assignee: Shanghai Institute of Metallurgy of CAS
Current assignee: Shanghai Institute of Optics and Fine Mechanics of CAS
Priority date: 1991-12-24
Filing date: 1991-12-24
Publication date: 1992-06-17

Abstract

The utility model relates to a free expansion gap sealing ring for a rotary furnace flue, which comprises a shim, screws 2, a press plate 4, an inner and an outer thermal insulation cover plates 3 and 6 which comprises a cylindrical thermal shield 7, flanges 8 and 9 and a connecting ribbed plate 10, and an asbestos expansion ring 5, wherein, a thermal shield of the outer thermal insulation cover plate 6 is sheathed on a thermal shield of the inner thermal insulation cover plate 3; the asbestos expansion ring 5 is positioned between the inner thermal insulation cover plate 3 and the outer thermal insulation cover plate 6; the expansion ring 5 is fixed on the flange 8 of the inner and the outer thermal insulation cover plates 3 and 6 by the screws 2 and the press plate 4. The utility model is used by converters of SHANGHAI NO. 3 STEEL WORKS.

Description

Free expansion gap seal ring for rotary furnace flue

A kind of converter flue free expansion slot wear ring.The utility model relates to smelting equipment field in the smelting iron and steel.

For a long time, the converter flue of being made up of upper and lower flue is that usage indigo plant is fixed together upper and lower flue, and when the flue expanded by heating, upper and lower flue expanded by heating is inconsistent.When lower flue upwards expands in temperature-rise period, owing to the supression that is subjected to huge upper flue stands stress, in the course of time lower flue just very easily damages, otherwise the upper flue situation is as the same, for making flue energy free expansion between the converter on-stream period, my institute has done improvement in design, leaves slot between upper and lower flue, but the existence of slot has but brought gas leakage, heat radiation phenomenon.

The purpose of this utility model is exactly to design the slot of a kind of wear ring with the free expansion of sealing converter flue, effectively prevents gas leakage and heat radiation phenomenon.

Now in conjunction with the accompanying drawings the utility model is illustrated.

Accompanying drawing 1 is the synoptic diagram of the utility model under user mode.A is the free expansion slot of upper and lower flue.

Accompanying drawing 2 is the utility model synoptic diagram.

1 is pad among the figure, and 2 is screw, and 3 is interior heat insulation cover plate, and 4 is pressing plate, and 5 is the asbestos expansion ring, and 6 is outer heat insulation cover plate.

Accompanying drawing 3 is the synoptic diagram of interior heat insulation cover plate 3 and outer heat insulation cover plate 6.

7 is the insulation plate of a cylinder among the figure, and 8,9 is method indigo plant, and 10 is the blue gusset that connects of method.

The utility model is except including pad 1, and screw 2 outside the pressing plate 4, also includes interior heat insulation cover plate 3, asbestos expansion ring 5 and outer heat insulation cover plate 6.

The bottom of interior heat insulation cover plate 3 and outer heat insulation cover plate 6 is the heat shield 7 of a cylinder, the heat shield drum diameter of outer heat insulation cover plate 6 is bigger than the heat shield drum diameter of interior heat insulation cover plate 3, be welded with method blue 8 and 9 on one end end of heat shield 7 and the cylinder, respectively have several holes on the method blue 8 and 9, be welded with the blue gusset 10 that connects of method between two methods blue 8 and 9, the heat shield 7 of outer heat insulation cover plate 6 is enclosed within the outside of the heat shield 7 of interior heat insulation cover plate 3. Between inside and outside heat insulation cover plate 3 and 6, putting asbestos expansion ring 5, and be fixed in screw 2 and pressing plate 4 on the method indigo plant 9 of inside and outside heat insulation cover plate 3 and 6, during use as long as screw 2 is fixed on the method indigo plant 8 on inside and outside heat insulation cover plate 3 and 6 on the method indigo plant of upper and lower flue collector pipe, the places fixed of useful screw 2 all be lined with pad 1.

When the converter running, on, when lower flue is opened temperature, in the cause, outer heat insulation cover plate 3 and 6, and the effect of asbestos expansion ring 5, just can not cause because of last, the existence of free slot a between the lower flue and heat is scattered and disappeared, and asbestos expansion ring 5 also can be with interior, outer heat insulation cover plate 3 and 6 collapse and breathing, therefore the effusion of having stopped gas among the slot a fully, in addition, in, outer heat insulation cover plate 3 and 6 has only an end and last, the method of lower flue header is blue fixing, thereby when last, during the free expansion of lower flue difference, in, outer heat insulation cover plate 3 and 6 each free expansion thereupon, never have in any supression, the resistance of lower flue free expansion has been guaranteed the effect of slot a.

Of the present utility model being characterised in that, except including pad 1, screw 2 is outside the pressing plate 4.Heat insulation cover plate 3 in also including, asbestos expansion ring 5 and outer heat insulation cover plate 6, heat insulation cover plate 3 and outer heat insulation cover plate 6 include the heat insulation cover plate 7 of cylinder in said, method blue 8 and 9, and the blue gusset 10 that connects of method, the insulation plate cylinder diameter of outer heat insulation cover plate 6 is bigger than the insulation plate drum diameter of interior heat insulation cover plate 3, the insulation plate of heat insulation cover plate 3 outside in the insulation plate of outer heat insulation cover plate 6 is enclosed within, in asbestos expansion ring 5 is seated in, between the outer heat insulation cover plate 3 and 6, in screw 2 and pressing plate 4 are fixed on asbestos expansion ring 5, on outer heat insulation cover plate 3 and 6 the method indigo plant 8, institute useful screw 2 fixed places all are lined with pad 1.

The utility model uses in the converter of last steel three factories, finding no flue gas after the use overflows from the free expansion slot a between upper and lower flue, and wear ring collar extension temperature is substantially near the flue outside wall temperature, in a year and a half of using so far, upper and lower flue all is not damaged, and lower flue was using about two months just to need to repair usually in the past.

Claims

1, a kind of converter flue free expansion slot wear ring, it includes pad 1, screw 2, pressing plate 4, heat insulation cover plate 3 in it is characterized in that also including, asbestos expansion ring 5 and outer heat insulation cover plate 6, heat insulation cover plate 3 and outer heat insulation cover plate 6 include cylinder insulation plate 7 in said, method blue 8 and 9, and the blue gusset 10 that connects of method, the insulation plate cylinder diameter of outer heat insulation cover plate 6 is bigger than the insulation plate drum diameter of interior heat insulation cover plate 3, the insulation plate of heat insulation cover plate 3 outside in the insulation plate of outer heat insulation cover plate 3 is enclosed within, in asbestos expansion ring 5 is seated in, between the outer heat insulation cover plate 3 and 6, in screw 2 and pressing plate 4 are fixed on asbestos expansion ring 5, on outer heat insulation cover plate 3 and 6 the method indigo plant 8, institute useful screw 2 fixed places all are lined with pad 1.