CN201016118Y

CN201016118Y - Furnace wall oxygen gun protective equipment

Info

Publication number: CN201016118Y
Application number: CNU2007200188069U
Authority: CN
Inventors: 张海涛; 郭玉隆; 杜振民; 杨波
Original assignee: JISENG MATALLURGICAL APPARATUS CO Ltd YANTAI CITY
Current assignee: JISENG MATALLURGICAL APPARATUS CO Ltd YANTAI CITY
Priority date: 2007-02-09
Filing date: 2007-02-09
Publication date: 2008-02-06
Anticipated expiration: 2017-02-09

Abstract

The utility model discloses a protecting device for fire wall oxygen lance, comprising a body(2). The utility model is characterized in that a dregs hanging rib(1) is arranged on the body(2); the body(2) is internally provided with a water cooled channel(10) which is connected with a cooled water inlet and outlet pipe(8); the body(2) is still internally provided with an oxygen lance inserting hole(3) which is connected with a branch seat(9) through a connecting shaft(7). The utility model realizes more effective protection to the oxygen lance with small section area, small heated radiation, narrow cooled water channel and good cooled effect; head of the oxygen lance is not easy to be adhered with slag; the lance is easy to be pulled out with the advantages of convenient dismounting and wide use scope, which has a comparatively flexible position on the stove.

Description

A kind of wall lance protector

Technical field:

The utility model designs a kind of wall lance protector, belongs to the Electric Furnace Steelmaking field.

Background technology:

Electric furnace steel making is very general in Iron and Steel Production, in order to shorten the heat, reduces consuming, and oxygen blast has obtained widespread usage in electric furnace, and main the employing has the oxygen blast etc. of fluxing of the artificial oxygen blast of oxygen hose, the oxygen blast of fire door mechanical manipulator, furnace wall.But these devices are being shortened the heat with oxygen intensity and all lower with oxygen efficiency, and aspect effects such as reduction consumption are very limited, especially can not satisfy the decarburization requirement of the hot metal charge technology of present rise.In order to address this problem, electric stove wall oxygen lance spraying oxygen technology is arisen at the historic moment, and it has extremely strong penetrativity, to promoting slag-metal reaction, evenly molten steel composition and temperature reduce splash, improve oxygen utilization rate, raising recovery rate of iron etc. all has fairly obvious effect.But this wall lance is the stroke that reduces oxygen jet to be guaranteed jet intensity must to stretch into burner hearth inside, so oxygen rifle scaling loss very easily, the easy scaling loss seepage of oxygen rifle rifle head, the oxygen rifle is too short work-ing life, and it is too fast to change frequency, extend hot stoppage time greatly, had a strong impact on and restricted the performance of its advantage.

And the oxygen rifle protector that occurs at present; sectional area is big, and thermal radiation is big, and water stream channel is wide; cooling performance is not good; oxygen rifle rifle head stretches out jack, makes the rifle head be stained with slag easily, loading and unloading oxygen rifle difficulty; and the oxygen rifle is dumb in the intravital position of stove; the length that the oxygen rifle inserts in the stove is short, and melting waste steel and decarburization efficient are low, cause electric furnace applicatory with it to be limited in scope.

The utility model content:

The purpose of this utility model is to overcome the deficiency of above-mentioned prior art and provides a kind of realization to the more efficiently protection of oxygen rifle; sectional area is little; thermal radiation is little; cooling water channel is narrow, good cooling results, and oxygen rifle rifle head is difficult for being stained with slag; draw guns easily; easy to loading and unloading, applied widely, at body of heater position wall lance protector more flexibly is set.

The purpose of this utility model can reach by following measure: a kind of wall lance protector; it has body 2; it is characterized in that body 2 is provided with slag hanging bar 1; the inside of body 2 is provided with water-cooling channel 10; water-cooling channel 10 connects water coolant water inlet pipe and water outlet pipe 8; body 2 inside are provided with oxygen rifle jack 3, and body 2 connects bearing 9 by coupling shaft 7.

In order further to realize the purpose of this utility model, described body 2 is a rectangular parallelepiped, 60～100 centimetres of length, and sectional area is 25～30 * 25～30 square centimeters.

In order further to realize the purpose of this utility model, described body 2 rear upper end are provided with upper plate 4.

In order further to realize the purpose of this utility model, the left and right sides, described body 2 rear portion is provided with side plate 5.

In order to realize that further the purpose of this utility model, described body 2 rear ends are provided with back plate 6.

In order further to realize the purpose of this utility model, the front end of described oxygen rifle jack 3 is cylindrical.

In order to realize that further the purpose of this utility model, the front end of described oxygen rifle jack 3 are conical.

In order further to realize the purpose of this utility model, it adopts fine copper to make.

The utility model can produce following positively effect compared with the prior art: this protector is fixedly mounted on the furnace wall of steel-smelting electric furnace; front end extend into body of heater inside; the effect of bar shaped slag hanging structure forms certain thickness slag blanket around being to make protector; of the etch of molten steel backwash can be effectively reduced, and the possibility that this device is damaged in striking can be significantly reduced device body.This device cross-sectional area is little, and sectional area is 25～30 * 25～30 square centimeters, and thermal radiation is little, and water stream channel is narrow, and flow velocity is accelerated, and good cooling results makes the life-span of this device obtain prolonging.The jack front end combines closely with the oxygen rifle, and the slit is very little, and slag is difficult for entering the slit.Oxygen rifle rifle head does not stretch out jack simultaneously, makes the rifle head can not be stained with slag, draws guns easily, makes the oxygen rifle easy to loading and unloading.Bearing and body adjustable angle are applicable to the various type of furnaces, and it is more flexible at body of heater the position to be set.Body is the rectangular parallelepiped of 60～100 centimetres of length, can stretch into the intravital useful length of stove and strengthen, and has shortened the distance of oxygen lance spraying loophole to molten steel, has improved and has fluxed and the efficient of decarburization.

Under normal circumstances can reach 6 to 8 months work-ing life of the present utility model, and can repair under the not serious condition of damage, guaranteed normally carrying out of STEELMAKING PRODUCTION, improves and smelt rhythm, shortens the heat, and guaranteed the blowing oxygen effect, reduces power consumption.

Description of drawings:

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

Fig. 2 is the left side synoptic diagram of Fig. 1;

Fig. 3 is the right side synoptic diagram of Fig. 1;

Fig. 4 is the sectional view of a kind of embodiment of the present utility model;

Fig. 5 is the sectional view of another a kind of embodiment of the present utility model.

Embodiment:

Below in conjunction with accompanying drawing preferred forms of the present utility model is elaborated:

Embodiment 1: a kind of wall lance protector is (referring to Fig. 1; Fig. 2; Fig. 3; Fig. 4); it adopts fine copper to make; it has body 2; body is a rectangular parallelepiped; 60～100 centimetres of length; sectional area is 25～30 * 25～30 square centimeters; body 2 forward upper end and front end are provided with bar shaped slag hanging bar 1, and the upper end at body 2 rear portions is provided with upper plate 4, and the left and right sides is provided with side plate 5; the rear end is provided with back plate 6; the inside of body 2 is provided with spiral water-cooling channel 10, and water-cooling channel 10 connects water coolant water inlet pipe and water outlet pipe 8, and body 2 inside are provided with oxygen rifle jack 3; the front end of oxygen rifle jack 3 is cylindrical; suitable front is columniform oxygen rifle, and columniform big I is made according to the size of oxygen rifle front end, and the jack front end is combined closely with the oxygen rifle; body 2 connects bearing 9 by coupling shaft 7, and the angle of body 2 and bearing 9 can be adjusted.

Embodiment 2: a kind of wall lance protector (referring to Fig. 1, Fig. 2, Fig. 3, Fig. 5); its structure is substantially with embodiment 1; just the front end of oxygen rifle jack 3 is conical; suitable front is conical oxygen rifle; conical big I is made according to the size of oxygen rifle front end, and the jack front end is combined closely with the oxygen rifle.

Claims

1. wall lance protector; it has body (2); it is characterized in that body (2) is provided with slag hanging bar (1); the inside of body (2) is provided with water-cooling channel (10); water-cooling channel (10) connects water coolant water inlet pipe and water outlet pipe (8); body (2) inside is provided with oxygen rifle jack (3), and body (2) connects bearing (9) by coupling shaft (7).

2. a kind of wall lance protector according to claim 1 is characterized in that described body (2) is a rectangular parallelepiped, 60～100 centimetres of length, and sectional area is 25～30 * 25～30 square centimeters.

3. a kind of wall lance protector according to claim 1 and 2 is characterized in that described body (2) rear upper end is provided with upper plate (4).

4. a kind of wall lance protector according to claim 1 and 2 is characterized in that described body (2) left and right sides, rear portion is provided with side plate (5).

5. a kind of wall lance protector according to claim 1 and 2 is characterized in that described body (2) rear end is provided with back plate (6).

6. a kind of wall lance protector according to claim 1, the front end that it is characterized in that described oxygen rifle jack (3) is cylindrical.

7. a kind of wall lance protector according to claim 1, the front end that it is characterized in that described oxygen rifle jack (3) is for conical.

8. a kind of wall lance protector according to claim 1 is characterized in that it adopts fine copper to make.