SU1654342A1 - Method for replacement of annular air duct for hot blowing of blast furnace - Google Patents

Abstract

The invention is fire-resistant to ferrous metallurgy, in particular, to the domain production, and can be used n-iiio when replacing the ring air duct with a hot blow. The purpose of the invention is to reduce the time of a simple furnace during repairs and reduce the labor intensity of installation work. The dismantled nodes of the old air duct transport the operating zone of the assembly All-Kan in a state freely suspended from the new air duct by rolling out the assemblies of its sections, moving the annular guides of the old air duct along the operative elements of the air duct. 8 il.

Description

The invention relates to ferrous metallurgy, in particular, to blast furnace production, and can be used when replacing a ring air duct with a hot blast during major repairs of a blast furnace.

The purpose of the invention is to reduce the time just to repair the furnace, reducing the labor intensity of the installation work.

PA figure 1 shows a dismountable annular air duct, cut; figure 2 - the location of the old air duct during its transportation to the area of the mounting beam, the section; on fig.Z - the location of the new air duct during its installation, section; on figa - installation of the new air duct, the plan; FIG. 3 shows the transportation of the old air duct to the zone of the mounting beam, the plan; figure 6 - node I in figure 2; 7 - node II in FIG. 3; on Fig - dismountable

annular air duct (option of the upper location of the duct),

The method is carried out as follows.

After stopping the furnace, the old air pipe 1 (Fig.1) is disconnected from the columns of the blast furnace and lowered onto the supports 2. The annular guides 3 are mounted on it (Fig.2) and the lined sections 4 are rolled over it (Fig. 3 and 4) a new air duct 5 to the design position around the furnace, welding sections 4 among themselves. The assembled new air duct 5 is suspended by removing the supports 2 on the suspensions 6 (FIG. 2) to the columns 7 of the blast furnace support system. The disassembled air pipe 1 is removed from the repair zone by rolling out in the state of the nodes of its sections 8, rehiming SP, freely suspended from the new air pipe 5.

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 1I i urn nt tit.it and smzlyuschie Z onopii Hi To the longitudinal elements 9 of the new case, 5,

Rnolnye supporting elements 9 ras u / ench in russia Yu Koltsevykh

and 3 swindle in the cross section of the “HUH f jopny I-beams of the village i u vV- Onpono i: 1 of this psi installation of the air duct 5 of the supporting

Onts ktnoy surface 11 (Fig. 6) gchukit inner surface 12 of the lower-1 and ITU IKV 1 it LETSRO guide}, ii 1 t demountable sharp air - i t (iH r.bl - internal by, t ng (tt I - to | 15-SHELF 15,

vtT-, g IT; -PT X NTRVLIUII T1, i-I L, h J nd C P ZO -

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 g „KIVYA f - (SHCH G1Ya

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 . Kochtseg yuyu-joff-ekdtt b, installed-F reystsy mounting installation of an air conditioner Ti3 repair area have high 5 17 in FIG. 7) dt output from the 10 oTiopn tx strip of roller ete. gt 9 o

., 1 thre-h 1 ut1 i g p -bo: by e i p

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 veto t-bluff horizontally- ir-,, i h lsh e1-1goch furnace straight jwL, 4li pgcn 1 with ic duct 1 -, IH, I g-michnoy furnace, ъ

) TP with T C g 3 Gob 1 NOYA WIDG fia 9D01CHY -, h G vi jt i KOLY1SOSOGO

3) mount the guides 3 Touchet-ug t zone L of the action baht of section 4 (fig, 4) of the new branch door s, through the notches 16 (Ligth L): Oolikov gd dreaming H (ftg.W), mount-TCHFORPNPYG iii lower part of the new air ipop vv1 5 are located, 10 kochtsevt nasravl yushchi starogeporodorod K 10 are located inside the cavities. internal surface 12 iiiiKHCw shelves 1 J The installation of the new air of the OPERATOR 5 (Fig. 3.4) of the r-hc displacement of its 4 kOe sections. | I’m looking for 3 old i 1g1vod 1 K net, next docking us not alone. Then PRONZIL., G tzku supports 2 (Fig. "2) and a new air is supplied in PI ri

25

543424

wire 5 on hangers 6 to the columns 7 of the blast furnace. In this case, the old air duct 1 is freely suspended,. neck on the new air duct 5, and its annular guides 3 (figure 5) are located with the support of the inner surface 14 of the upper flange 15 on the supporting roller elements 9 new

S duct 5.

The disassembled air line 1 is cut into sections 8 (Fig. 7) and the latter are alternately rolled out into the L zone of the mounting beam, moving annular guides 3 along the roller bearing elements 9 of the new air line 5. On the ringed directions 1x3 (Fig. 7) each section 8 installed in the zone L of the action of the monotone beam, cut out the slots 17

To inject the supporting roller elements 9 of the new air duct 5 from the cavities 10 and, posting onto the hook of the mounting beam, remove section 8 from the repair zone.

The application of the invention significantly reduces the labor costs for repair work, eliminates the work with the use of electric winch to remove the dismantled components from the repair area, simplifies the execution of work, allows to mechanize these works, using an easy-to-make device for these purposes. Dates just furnace repair reduced by 20 hours.

Claims (1)

Invention Formula A method for replacing an annular air duct with a hot blast of a blast furnace, including disconnecting the old air duct from the furnace, lowering the assembled form onto the supports and mounting the annular guides on it, installing the new duct sections with supporting elements on the annular guides design position by moving each section on its supporting elements along the annular guides followed by connecting the sections between themselves and with the furnace, transporting sections of the old air guide gadfly into the zone of action of the mounting beam, characterized in that, in order to reduce the time just for the furnace during repair, reduce the labor intensity of the installation, transport of the dismantled sections of the steel 35 40 45 50 55 2 Mr J r r-i -aU1 vD m 1.8 V 5 Wfl FIG. eight Compiled by I.Logacheva Gedaklir PLUnko Tehred A. Kravchuk Proofreader N.Revska 1,14,15 FIG. 7