WO2024140752A1

WO2024140752A1 - Ladle baking device

Info

Publication number: WO2024140752A1
Application number: PCT/CN2023/142160
Authority: WO
Inventors: 李国丰; 白福猛; 孙永亮; 吴林琦; 刘彬鑫; 宁天灏; 艾树彬; 孟庆帅; 王天贺; 高杰
Original assignee: 天津喆丰环保科技有限公司
Priority date: 2022-12-27
Filing date: 2023-12-27
Publication date: 2024-07-04

Abstract

A ladle baking device, comprising an igniter (1) and a device body. A cooling bottom plate (18) and a cooling cover plate (19) are provided at the front end of the igniter (1) and the front end of the device body. A cooling cavity is formed between the cooling bottom plate (18) and the cooling cover plate (19). The edge of the cooling bottom plate (18) is connected to a small drum (20). The rear end of the small drum (20) is connected to a fire blocking plate (21). The edge of the fire blocking plate (21) is connected to a large drum (22). A cooling oxygen inlet pipe (16) and a cooling oxygen outlet pipe (17) are also connected to the cooling cover plate (19). The vacant end of the cooling oxygen outlet pipe (17) is communicated with a main oxygen pipe (5) and an epoxy pipe (7) of the device body. The provision of the fire blocking plate (21) can protect the device body and the igniter (1) effectively, and prevent the device body and the igniter (1) from being burnt at a high temperature, thereby prolonging the service life of the device body and the igniter (1).

Description

A ladle baking gun

Technical Field

The invention relates to the technical field of steelmaking, in particular to a ladle baking gun.

Background technique

The ladle generally needs to be baked after it is newly built and before it is filled with molten steel. The device used to bake the ladle is called a ladle baker. The ladle baker includes a baking box, a baking gun, and corresponding supporting pipelines. The baking gun is installed on the baking box and bakes the ladle by igniting the medium such as combustion gas and fuel oil. After the medium is ignited, the temperature at the front end of the baking gun is high, and it will form a backfire, which will burn the igniter and the gun body. The igniter and the gun body are relatively fragile and cannot withstand excessively high temperatures, which greatly reduces the service life of the igniter and the gun body.

Summary of the invention

In order to solve the above technical problems, the present invention provides a ladle baking gun.

The present application is implemented by adopting the following technical solutions.

A ladle baking gun comprises an igniter and a gun body, wherein a cooling bottom plate and a cooling cover plate are provided at the front ends of the igniter and the gun body, and a cooling cavity is formed between the cooling bottom plate and the cooling cover plate; the edge of the cooling bottom plate is connected to a small reel, the rear end of the small reel is connected to a fire baffle, and the edge of the fire baffle is connected to a large reel; a cooling oxygen inlet pipe and a cooling oxygen outlet pipe are also connected to the cooling cover plate, and the free end of the cooling oxygen outlet pipe is connected to a main oxygen pipe and an epoxy pipe of the gun body.

Furthermore, the cooling bottom plate and the cooling cover plate are provided with an igniter fixing sleeve and a gun body fixing sleeve, which are arranged at a certain angle; the igniter and the gun body are respectively inserted into the igniter fixing sleeve and the gun body fixing sleeve.

Furthermore, the free end of the cooling oxygen outlet pipe is connected to the main oxygen inlet pipe and the epoxy inlet pipe respectively through a three-way valve; the main oxygen inlet pipe is connected to the tail end of the main oxygen pipe; and the epoxy inlet pipe is connected to the side wall of the epoxy pipe.

Furthermore, the gun body includes a main oxygen pipe, a fuel gas pipe and an epoxy pipe which are sequentially sleeved from the inside to the outside; the front end of the main oxygen pipe is connected to the inner nozzle, the front end of the fuel gas pipe is connected to the outer nozzle, and the front end of the epoxy pipe is connected to the gun head.

Furthermore, a gas pipe joint is sleeved on the rear portion of the gas pipe, and a side wall opening of the gas pipe joint is connected to the gas inlet pipe.

This application has the following beneficial effects.

The present invention can effectively protect the gun body and the igniter by arranging a fire baffle, prevent the gun body and the igniter from being burned by high temperature, thereby increasing the service life of the gun body and the igniter; in addition, the present application arranges a cooling chamber at the head end of the bun baking gun, and the oxygen with a relatively low temperature is heated after passing through the cooling chamber and is sent into the gun body, which, on the one hand, reduces the temperature of the head end of the bun baking gun and extends the service life of various components in the bun baking gun; on the other hand, the heated oxygen is more easily ignited, thereby improving the utilization rate of energy.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a schematic structural diagram of the present invention;

Fig. 2 is a top view of the present invention;

Fig. 3 is a cross-sectional view along line A-A of Fig. 2 .

Among them, 1. igniter; 2. igniter gun seat; 3. igniter fixed sleeve; 4. gun body fixed sleeve; 5. main oxygen pipe; 6. gas pipe; 7. epoxy pipe; 8. inner nozzle; 9. outer nozzle; 10. gun head; 11. ball valve; 12. three-way valve; 13. epoxy air inlet pipe; 14. gas air inlet pipe; 15. gas pipe section; 16. cooling oxygen inlet pipe; 17. cooling oxygen outlet pipe; 18. cooling bottom plate; 19. cooling cover plate; 20. small reel; 21. fire baffle; 22. large reel; 23. rib plate; 24. main oxygen air inlet pipe.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

As shown in Fig. 1-3, a ladle baking gun includes an igniter 1 and a gun body.

The gun body includes a main oxygen pipe 5, a gas pipe 6 is arranged outside the main oxygen pipe 5, and an epoxy pipe 7 is arranged outside the gas pipe 6. The main oxygen pipe 5 has a main oxygen cavity, the gas cavity is between the main oxygen pipe 5 and the gas pipe 6, and the epoxy cavity is between the gas pipe 6 and the epoxy pipe 7. The front end of the main oxygen pipe 5 is connected to the inner nozzle 8, and the gas pipe 6 is connected to the inner nozzle 8. The front end is connected to the outer nozzle 9, the front end of the epoxy tube 7 is connected to the gun head 10, and the inner wall of the gun head 10 forms a certain taper, which can produce a convergence and clustering effect on the main oxygen, fuel gas and epoxy.

The rear end of the main oxygen pipe 5 is connected to the main oxygen intake pipe 24; the rear part of the gas pipe 6 is sleeved with a gas pipe segment 15, the side wall opening of the gas pipe segment 15 is connected to the gas intake pipe 14, and the gas intake pipe 14 is connected to the gas chamber.

The present application provides a cooling base plate 18 and a cooling cover plate 19 at the front end of the igniter 1 and the gun body. Specifically, the cooling base plate 18 and the cooling cover plate 19 are provided with an igniter fixing sleeve 3 and a gun body fixing sleeve 4, the gun body fixing sleeve 4 is arranged horizontally, and the igniter fixing sleeve 3 is arranged at a certain angle, the igniter 1 is inserted into the igniter fixing sleeve 3 and fixed to the end of the igniter fixing sleeve 3 through the igniter gun seat 2, and the gun body is inserted into the gun body fixing sleeve 4 and fixed through a fixing member. The present application arranges the igniter 1 at a certain angle to the gun body, which is more convenient for igniting the mixture of oxygen and fuel gas.

In the present application, a cooling cavity is formed between the cooling bottom plate 18 and the cooling cover plate 19; the cooling cover plate 19 is connected with a cooling oxygen inlet pipe 16 and a cooling oxygen outlet pipe 17, and both the cooling oxygen inlet pipe 16 and the cooling oxygen outlet pipe 17 are connected to the cooling cavity. The free end of the cooling oxygen outlet pipe 17 is respectively connected to the main oxygen inlet pipe 24 and the epoxy inlet pipe 13 through a three-way valve 12; the main oxygen inlet pipe 24 is connected to the tail end of the main oxygen pipe 5 through a ball valve 11; the epoxy inlet pipe 13 is connected to the side wall of the epoxy pipe 7, and a ball valve 11 is also provided on the epoxy inlet pipe 13. The ball valve 11 is used to control the flow of gas entering the main oxygen cavity and the epoxy cavity, so that the air-fuel ratio is within the optimal range.

The edge of the cooling bottom plate 18 of the present application is connected to the small roll 20, the rear end of the small roll 20 is connected to the annular fire baffle 21, and the edge of the fire baffle 21 is connected to the large roll 22; preferably, a rib 23 for increasing the connection strength is provided between the fire baffle 21 and the large roll 22. The present application sets the above fire baffle structure outside the gun body and the igniter 1, which can effectively prevent the gun body and the igniter 1 from being burned by high temperature, and improve the service life of various components in the baking bag gun.

The working principle of the present invention is as follows: oxygen with a relatively low temperature enters the cooling chamber through the cooling oxygen inlet pipe 16, the gas performs heat exchange in the cooling chamber, the heated oxygen enters the cooling oxygen outlet pipe 17, and according to the opening of the ball valve 11, part of the oxygen enters the main oxygen chamber, and the other part of the oxygen enters the epoxy chamber. At the same time, the fuel gas enters the fuel gas chamber from the fuel gas inlet pipe 14, the main oxygen, fuel gas, and epoxy gather in the gun head 10 and spray out, after the igniter 1 is ignited, the mixed gas is ignited to achieve the baking of the ladle.

The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

A ladle baking gun comprises an igniter (1) and a gun body, characterized in that: a cooling bottom plate (18) and a cooling cover plate (19) are provided at the front ends of the igniter (1) and the gun body, and a cooling cavity is formed between the cooling bottom plate (18) and the cooling cover plate (19); the edge of the cooling bottom plate (18) is connected to a small reel (20), the rear end of the small reel (20) is connected to a fire baffle (21), and the edge of the fire baffle (21) is connected to a large reel (22); a cooling oxygen inlet pipe (16) and a cooling oxygen outlet pipe (17) are also connected to the cooling cover plate (19), and the free end of the cooling oxygen outlet pipe (17) is connected to a main oxygen pipe (5) and an epoxy pipe (7) of the gun body.
The ladle baking gun according to claim 1 is characterized in that: an igniter fixing sleeve (3) and a gun body fixing sleeve (4) are provided on the cooling bottom plate (18) and the cooling cover plate (19), and the igniter fixing sleeve (3) and the gun body fixing sleeve (4) are arranged at a certain angle; the igniter (1) and the gun body are respectively inserted into the igniter fixing sleeve (3) and the gun body fixing sleeve (4).
The ladle baking gun according to claim 1 is characterized in that: the free end of the cooling oxygen outlet pipe (17) is respectively connected to the main oxygen inlet pipe (24) and the epoxy inlet pipe (13) through a three-way valve (12); the main oxygen inlet pipe (24) is connected to the tail end of the main oxygen pipe (5); and the epoxy inlet pipe (13) is connected to the side wall of the epoxy pipe (7).
The ladle baking gun according to claim 1 is characterized in that: the gun body comprises a main oxygen pipe (5), a gas pipe (6) and an epoxy pipe (7) which are sequentially sleeved from the inside to the outside; the front end of the main oxygen pipe (5) is connected to the inner nozzle (8), the front end of the gas pipe (6) is connected to the outer nozzle (9), and the front end of the epoxy pipe (7) is connected to the gun head (10).
The ladle baking gun according to claim 4 is characterized in that a gas pipe segment (15) is sleeved on the rear of the gas pipe (6), and the side wall opening of the gas pipe segment (15) is connected to the gas inlet pipe (14).