CN211255978U

CN211255978U - Iron-adding aerial fog dust-suppression fire-control device in front of converter

Info

Publication number: CN211255978U
Application number: CN201922147851.XU
Authority: CN
Inventors: 杨正府; 唐荣琼; 王会超; 陆忠庆; 韦高海; 宋艳珂; 李智; 韦远华; 陈明辉; 覃廷和
Original assignee: Liuzhou Iron and Steel Co Ltd
Current assignee: Liuzhou Iron and Steel Co Ltd
Priority date: 2019-12-04
Filing date: 2019-12-04
Publication date: 2020-08-14
Anticipated expiration: 2029-12-04

Abstract

The utility model discloses a converter stokehold hot metal charging aerial fog dust suppression fire control device, which relates to the mechanical field and comprises a main air supply pipe and a main water supply pipe which are arranged side by side and a plurality of spray guns communicated with the main air supply pipe and the main water supply pipe; the main air supply pipe is communicated with the air supply control pipeline through a main air inlet arranged in the middle of the main air supply pipe; the main water supply pipe is communicated with the water supply control pipeline through a main water inlet arranged in the middle of the main water supply pipe. The utility model can solve the problems that the current converter iron charging process is serious in flue gas dust overflow and the environment in the factory building is quite bad due to the fact that the flame rushes to the tower top, and has great potential safety hazard.

Description

Iron-adding aerial fog dust-suppression fire-control device in front of converter

Technical Field

The utility model relates to the technical field of smelting, in particular to a device for suppressing dust and controlling fire by using aerial fog in the process of adding iron in front of a converter.

Background

The control and recovery equipment of the flue gas and dust in the converter steelmaking process is necessary, and common smelting systems are provided with dust removal equipment in the converting period, such as a primary dust removal fan and flue system, a secondary dust removal fan and a smoke collection hood system. Before molten iron is charged into a converter, in the process of adding iron in the converter and after the process of adding iron is finished, a large amount of smoke and dust overflow from the ladle, particularly in the process of adding iron in the converter, smoke and dust overflow is serious, and flame rushes to the tower. The links are that no special equipment is used for recovering and controlling smoke dust and flame, a large amount of overflowing smoke dust and flame cause severe environment in a factory building, and can cause the equipment such as a secondary dust removal and smoke collection hood in front of the furnace, a girder of a travelling crane rail, a travelling crane body, transmission mechanical electrical equipment, a metal hose of a tower oxygen lance system and the like to be corroded and burnt, so that the service cycle of corresponding spare parts is short, the replacement work is frequent, the outer layer of the metal hose is directly burnt through and burst, the electrical equipment above the travelling crane body is burnt and cannot run, and the normal operation of production is directly influenced. Meanwhile, the influence on the environment of each floor of the tower is very large, the content of the diffused gas of the smoke and the dust of the tower is increased in the whole iron mixing process, and personnel cannot continue to work, so that great potential safety hazards exist. Under the condition that the factory building is not provided with three times of dust removal equipment, smoke dust frequently rushes out of the top of the factory building directly, and the factory building smokes frequently. In view of the above problems and hidden troubles, it is imperative to develop a set of dust suppression and fire control device.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a converter stokehold is converted iron aerial fog and is pressed down dirt accuse fire device is provided, it can solve current converter and convert the process of iron, and the excessive serious and flame of flue gas dust rushes to the tower top and causes the factory building internal environment very abominable, has the problem of very big potential safety hazard.

In order to solve the above problem, the technical scheme of the utility model is that: the converter stokehole iron-charging aerial fog dust-suppression fire-control device comprises a main air supply pipe, a main water supply pipe and a plurality of spray guns, wherein the main air supply pipe and the main water supply pipe are arranged side by side, and the spray guns are communicated with the main air supply pipe and the main water supply pipe; the main air supply pipe is communicated with the air supply control pipeline through a main air inlet arranged in the middle of the main air supply pipe; the main water supply pipe is communicated with the water supply control pipeline through a main water inlet arranged in the middle of the main water supply pipe.

In the above technical solution, a more specific solution may also be: the spray gun comprises a spray gun body, a spray gun nozzle arranged at the front end of the spray gun body, a spray gun water supply pipe and a spray gun air supply pipe which are arranged in the spray gun body; one end of the spray gun water supply pipe is communicated with the water supply connecting ports distributed on the main water supply pipe, and the other end of the spray gun water supply pipe is communicated with the spray nozzle of the spray gun; and one end of the spray gun air supply pipe is communicated with an air supply connector distributed on the main air supply pipe, and the other end of the spray gun air supply pipe is communicated with the spray nozzle of the spray gun.

Further: the air supply control pipeline and the water supply control pipeline are connected in series by a first main valve, a computer-controlled pneumatic valve and a second main valve and then connected with the bypass valve in parallel, and the computer-controlled pneumatic valve is connected with a controller controlled by a computer on a console.

Further: the main gas supply pipe and the main water supply pipe are both annular closed pipes and are welded and fixed side by side; the spray gun is provided with 7 rods, and one end of each 7 rod of the spray gun is arranged on the main water supply pipe at equal intervals; the spray gun air supply pipe is welded with an air supply connector on the main air supply pipe, and the spray gun water supply pipe is welded with a water supply connector on the main water supply pipe.

Due to the adoption of the technical scheme, the utility model discloses following beneficial effect has:

1. the smoke flame overflow in the process of adding iron in front of the furnace is controlled, and the environment is greatly improved;

2. faults of the travelling crane and auxiliary equipment thereof caused by flame burning loss are zero;

3. equipment in the smelting tower area is effectively protected, and the annual spare part cost is saved by about 60 ten thousand yuan;

4. the safety of the operation personnel in the smelting tower area is guaranteed, and the potential safety hazard is eliminated.

Drawings

FIG. 1 is a general plan view of the present invention;

FIG. 2 is a layout view of the air supply pipe of the present invention;

fig. 3 is a layout view of the water supply pipe of the present invention;

FIG. 4 is a front view of the spray gun body of the present invention;

figure 5 is a cross-sectional view of the spray gun nozzle of the present invention;

fig. 6 is an overall schematic view of the connection of the present invention with a control system;

fig. 7 is a schematic view of the installation position on site of the present invention.

The reference numbers in the figures denote:

1. a main gas supply pipe; 2. a main water supply pipe; 3. a spray gun body; 4. A spray gun nozzle; 5. An air supply connector; 6. A water supply connection port; 7. a total air inlet; 8. a main water inlet; 9. a spray gun water supply pipe; 10. a spray gun air supply pipe 11, a first main valve 12, a computer controlled pneumatic valve 13, a second main valve 14, a bypass valve 15, a converter 16, a collecting cover 17, a ladle, A, nitrogen, B and water.

Detailed Description

The invention will be further described with reference to the following figures and examples:

the converter stokehold hot metal charging aerial fog dust suppression fire control device shown in fig. 1 to 5 comprises a main air supply pipe 1 and a main water supply pipe 2 which are arranged side by side and a 7-rod spray gun communicated with the main air supply pipe 1 and the main water supply pipe 2; the main gas inlet 7 of the main gas supply pipe 1 is connected to a medium-pressure nitrogen distribution pipe at the production site, as indicated by the arrow a in fig. 6; the main water inlet 8 of the main water supply pipe 2 is connected with the equipment cooling water distribution pipe of the production site, as shown by an arrow B in figure 6; two kinds of pipes (nitrogen and water) can be arranged, namely a main air supply pipe 1 and a main water supply pipe 2, and are welded and fixed side by side.

The spray gun comprises a spray gun body 3, a spray gun nozzle 4 arranged at the front end of the spray gun body 3, a spray gun water supply pipe 9 and a spray gun air supply pipe 10 which are arranged in the spray gun body 3; one end of the spray gun water supply pipe 9 is welded and communicated with a water supply connector 6 which is distributed at the opening position on the main water supply pipe 2, and the other end is communicated with the cavity of the spray gun nozzle 4; one end of the spray gun air supply pipe 10 is communicated with the air supply connectors 5 distributed on the main air supply pipe 1 in a welding way, and the other end is communicated with the cavity of the spray gun nozzle 4. 7 spray guns 3 are arranged on the main water supply pipe 2 at equal intervals, the spray gun nozzles 4 are of the same type, and the structure of the spray gun nozzles is shown in figures 4 and 5. The cooling water distribution pipe and the medium-pressure nitrogen distribution pipe (namely, the water and nitrogen main pipes on the site) of the equipment on the production site are respectively provided with a stop valve, as shown in figure 6, a first main valve 11, a computer-controlled pneumatic valve 12 and a second main valve 13 are connected in series and then connected with a bypass valve 14 in parallel, the computer-controlled pneumatic valve 12 is connected with a controller of a computer, the computer in front of the furnace can automatically operate, the opening is carried out before the iron charging is started, and the closing is carried out after the iron charging is finished.

The utility model discloses on-the-spot mounted position is shown in fig. 7, the utility model discloses install on collecting cover 16, spray gun nozzle 4 aims at the clearance between converter 15 and the ladle 17, the jet effect of aerial fog is guaranteed in the global design, the converter is converted iron and is opened this device water supply air supply main pipeline valve before beginning computer operation, the aqueous vapor is through spray gun body to nozzle department, be fan-shaped overlapping spray form, to reach the effect that inhibits the converter and convert iron process smoke and dust flame's excessive, the factory building environment improves great, equipment and production obtain normal operating, guarantee tower regional operation personnel's safety simultaneously.

The operation procedures of the iron-adding aerial fog dust-suppression fire-control device in front of the attached converter are as follows:

1. before the converter is charged with molten iron, opening a computer 'spray dedusting' picture, and opening a water valve and a nitrogen valve in sequence: the water valve is opened by point striking, and the nitrogen valve is automatically opened after 3 seconds, so that the valve can be normally used.

2. After the molten iron is added into the converter, before the fire door is closed, opening a computer 'spray dedusting' picture, and closing a water valve and a nitrogen valve in sequence: and clicking to close the water valve, and automatically closing the nitrogen valve after 10 seconds.

3. In the use, when the water valve and the nitrogen gas valve are out of order and the computer is operated and can not be opened, the personnel in front of the furnace arrive at the valve station and manually open the bypass valve of the water and nitrogen gas valve group: and opening the water bypass valve → opening the nitrogen bypass valve, and then the water bypass valve can be used normally. And after the iron adding is finished, manually closing the water and nitrogen bypass valves, and simultaneously informing the operator on duty to check.

4. When the water valve and the nitrogen valve are failed and the computer operation cannot be closed in the using process, stokehold personnel can manually close the main valve or the main valve of the water valve and the nitrogen valve group main pipe and inform operators on duty to check and process.

Claims

1. A converter stokehold adds iron aerial fog and presses down dirt accuse fire device which characterized in that: comprises a main air supply pipe (1) and a main water supply pipe (2) which are arranged side by side and a plurality of spray guns which are communicated with the main air supply pipe (1) and the main water supply pipe (2); the main air supply pipe (1) is communicated with an air supply control pipeline through a main air inlet (7); the main water supply pipe (2) is communicated with the water supply control pipeline through a main water inlet (8).

2. The converter stokehole iron-charging aerial fog dust-suppression fire-control device according to claim 1, characterized in that: the spray gun comprises a spray gun body (3), a spray gun nozzle (4) arranged at the front end of the spray gun body (3), a spray gun water supply pipe (9) and a spray gun air supply pipe (10) which are arranged in the spray gun body (3); one end of the spray gun water supply pipe (9) is communicated with a water supply connector (6) on the main water supply pipe (2), and the other end is communicated with the spray gun nozzle (4); and one end of the spray gun air supply pipe (10) is communicated with an air supply connector (5) on the main air supply pipe (1), and the other end of the spray gun air supply pipe is communicated with the spray gun nozzle (4).

3. The converter stokehole hot metal charging aerial fog dust suppression fire control device according to claim 1 or 2, characterized in that: the air supply control pipeline and the water supply control pipeline are connected in parallel with the bypass valve (14) after being connected in series through a first main valve (11), a computer control pneumatic valve (12) and a second main valve (13), and the computer control pneumatic valve (12) is connected with a controller controlled by a computer on a console.

4. The converter stokehole iron-charging aerial fog dust-suppression fire-control device according to claim 2, characterized in that: the main gas supply pipe (1) and the main water supply pipe (2) are both annular closed pipes and are welded and fixed side by side; the spray gun is provided with 7 rods, and one end of each 7 rod of the spray gun is arranged on the main water supply pipe (2) at equal intervals; the spray gun air supply pipe (10) is welded with an air supply connector (5) on the main air supply pipe (1), and the spray gun water supply pipe (9) is welded with a water supply connector (6) on the main water supply pipe (2).