Novel burner for baking ladle

Abstract

The utility model discloses a novel burner for a baking ladle, which comprises a baffle plate, and a flue gas pipe with a burner penetrating through the baffle plate is arranged on one side, facing the baking ladle, of the baffle plate; the burner comprises a mixed gas pipe and a gas pipe which penetrate through the baffle, a heat exchange assembly wrapping the gas pipe and the mixed gas pipe is arranged on the side, away from the baking ladle, of the baffle, and the interior of the heat exchange assembly is divided into a hot gas cavity, a heat exchange cavity and a gas cavity through an outer cover, an inner cover and a smoke baffle; the outer cover is provided with an air inlet hole enabling the heat exchange cavity to be communicated with outside air and a smoke exhaust hole enabling the smoke cavity to be communicated with the outside. The inner cover is provided with a hot air hole enabling the heat exchange cavity to be communicated with the hot air cavity. The flue gas pipe enables the baking ladle inner cavity to be communicated with the flue gas cavity, and a rod body of the flue gas pipe is located in the heat exchange cavity. The combustor is reasonable in design and simple in structure, air participating in flame retardance is preheated through smoke waste heat, therefore, the combustion temperature is increased, heat energy loss is reduced, and high practical value is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of combustion device, in particular to a novel combustion device for baking ladle. BACKGROUND

[0002] The baking ladle is a necessary device for the heat preservation and transfer of molten steel in the steel industry, and the depth and diameter of the baking ladle can reach 4 meters. During the transportation of molten steel from steelmaking to continuous casting, the ladle is preheated to about 1000 DEG C through baking. If the temperature of the baking ladle is too low, the initial temperature of the molten steel needs to be increased to compensate for the heat loss, thereby directly increasing the smelting energy consumption.

[0003] In the prior art, a combustion gun using fuel such as blast furnace gas is usually used to heat the baking ladle. However, the existing combustion gun generally uses open heating, and the flue gas after combustion is not fully utilized, which has problems such as slow heating and high energy consumption. Moreover, due to the large inner cavity of the baking ladle, the temperature uniformity is poor, and the local high temperature leads to the loss of heat insulation materials, thereby affecting the service life of the baking ladle.

[0004] Therefore, it is urgent to design a novel combustion device for baking ladle, which can fully utilize the flue gas for preheating, improve the heating speed, and reduce the energy consumption. CONTENT OF THE UTILITY MODEL

[0005] To solve the above problems, the technical scheme adopted by the utility model is as follows:

[0006] A novel combustion device for baking ladle, characterized by comprising a baffle, wherein one side of the baffle facing the baking ladle is provided with a burner and a flue gas pipe penetrating through the baffle.

[0007] The burner comprises a mixed gas pipe and a gas pipe penetrating through the baffle.

[0008] The side of the baffle away from the baking ladle is provided with a heat exchange assembly covering the flue gas pipe and the mixed gas pipe, and the heat exchange assembly is divided into a hot gas cavity, a heat exchange cavity and a flue gas cavity by an outer cover, an inner cover and a smoke baffle.

[0009] The outer cover is provided with an air inlet hole for connecting the heat exchange cavity with the outside air and a smoke exhaust hole for connecting the flue gas cavity with the outside, and the inner cover is provided with a hot gas hole for connecting the heat exchange cavity and the hot gas cavity.

[0010] The flue gas pipe connects the inner cavity of the baking ladle with the flue gas cavity, and the rod body of the flue gas pipe is located in the heat exchange cavity.

[0011] Preferably, the outer cover and the inner cover are coaxial with each other, the air inlet hole and the hot gas hole are close to each other and a partition plate is arranged between the air inlet hole and the hot gas hole, and the partition plate prolongs the airflow channel between the air inlet hole and the hot gas hole.

[0012] Preferably, the mixed gas pipes are arranged in a ring array of more than three around the gas pipe, and each mixed gas pipe is communicated with the gas pipe through a connecting pipe.

[0013] Preferably, the outer side of the gas pipe is provided with a heat insulation sleeve covering the gas pipe and protruding a baffle.

[0014] Preferably, the heat insulation sleeve is in a cylindrical structure and coaxially arranged with the inner cavity of the roasting bag.

[0015] Preferably, the material of the heat insulation sleeve is chrome steel jade.

[0016] Preferably, the smoke pipes are arranged in a ring array of more than eight around the heat insulation sleeve.

[0017] Preferably, the materials of the gas pipe, the connecting pipe and the mixed gas pipe are stainless steel.

[0018] Compared with the prior art, the beneficial effects of the present application are that:

[0019] The design is reasonable and the structure is simple, the air participating in the flame retardation is preheated by the waste heat of the smoke, so that the combustion temperature is improved and the heat energy loss is reduced, and the present application has high practical value. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a schematic diagram of the overall structure of the present application;

[0021] Figure 2 is an A-A sectional view of Figure 1 ;

[0022] Figure 3 is a B-B sectional view of Figure 1 ;

[0023] Figure 4 is a schematic diagram of the gas passage.

[0024] Wherein: the baffle 10, the burner 20, the gas pipe 21, the connecting pipe 22, the mixed gas pipe 23, the heat insulation sleeve 24, the smoke pipe 30, the partition plate 40, the heat exchange assembly 50, the outer cover 51, the inner cover 52, the hot gas hole 53, the air inlet hole 54, the hot gas cavity 55, the heat exchange cavity 56, the smoke baffle 57, the smoke cavity 58, the smoke exhaust hole 59, the roasting bag 60. DETAILED DESCRIPTION

[0025] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the related drawings. The preferred embodiments of the present application are shown in the drawings. However, the present application can be realized in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0026] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," "up," "down," "front," "back," and similar expressions used in this document are for illustrative purposes only.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0028] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments:

[0029] like Figures 1-4 As shown, a novel burner for baking bread includes a baffle 10, on the side of the baffle 10 facing the bread 60, a burner 20 and a flue gas pipe 30 passing through the baffle 10 are provided.

[0030] The burner 20 includes a mixing pipe 23 and a gas pipe 21 that penetrate the baffle 10;

[0031] The side of the baffle 10 away from the baking bag 60 is provided with a heat exchange component 50 covering the flue pipe 30 and the mixing pipe 23. The heat exchange component 50 is divided into a hot air chamber 55, a heat exchange chamber 56 and a flue gas chamber 58 by an outer cover 51, an inner cover 52 and a smoke baffle 57.

[0032] The outer cover 51 is provided with an air inlet 54 that connects the heat exchange chamber 56 to the outside air and a smoke exhaust 59 that connects the flue gas chamber 58 to the outside. The inner cover 52 is provided with a hot air hole 53 that connects the heat exchange chamber 56 and the hot air chamber 55.

[0033] The flue pipe 30 connects the inner cavity of the baking bag 60 and the flue chamber 58, and the rod of the flue pipe 30 is located in the heat exchange chamber 56.

[0034] In this embodiment, the gas pipe 21 passes through the baffle 10 and the heat exchange assembly 50 and is connected to an external combustible gas source. In other embodiments, it may also pass through the baffle 10 and be connected to the combustible gas source as needed.

[0035] Furthermore, in order to increase the air flow distance in the hot air chamber 55 and thus fully exchange heat with the flue duct 30, the outer cover 51 and the inner cover 52 are coaxial with each other, the air inlet 54 and the hot air inlet 53 are close to each other and a partition 40 is provided between them, and the partition 40 extends the airflow channel between the air inlet 54 and the hot air inlet 53.

[0036] Furthermore, in order to fully mix the flame-retardant air with the combustible gas and improve the combustion efficiency, there are three or more mixing pipes 23 arranged in a ring array with the gas pipe 21 as the center, and all mixing pipes 23 are connected to the gas pipe 21 through connecting pipes 22.

[0037] Furthermore, a heat insulation sleeve 24 is provided on the outside of the gas pipe 21, which covers the gas pipe 21 and protrudes from the baffle 10.

[0038] Furthermore, the heat insulation sleeve 24 has a cylindrical structure and is coaxially arranged with the inner cavity of the baking bag 60.

[0039] In this embodiment, a heat insulation sleeve 24 with a protruding baffle 10 is provided so that the burner 20 can be inserted into the interior of the baking bag 60, thereby optimizing the flow path of flue gas inside the baking bag and improving heating efficiency.

[0040] Furthermore, in order to improve the service life of the burner 20, the heat insulation sleeve 24 is made of chrome corundum.

[0041] Furthermore, in order to optimize the flue gas flow path and ensure sufficient heat exchange, the flue gas pipe 30 is arranged in a ring array of eight or more, with the heat insulation sleeve 24 (24) as the center.

[0042] Furthermore, in order to improve the service life of the pipeline, the gas pipe 21, connecting pipe 22 and mixing gas pipe 23 are made of stainless steel.

[0043] In this embodiment, the baffle 10 is tightly fitted to the baking bag 60. The gas pipe 21 and the air inlet 54 are connected to natural gas and the blower, respectively. The blower sends air into the heat exchange chamber 56. Under the action of the baffle 40, the cold air surrounds the heat exchange chamber 56 and thus fully exchanges heat with the flue gas pipe 30. Then, the heated air enters the hot air chamber 55 through the hot air inlet 53 and finally enters the mixing pipe 23 to mix with natural gas for combustion. The flue gas generated by combustion enters the flue gas chamber 58 through the flue gas pipe 30 and then enters the flue gas treatment device through the exhaust port 59.

[0044] This utility model has a reasonable design and simple structure. It uses the waste heat of flue gas to preheat the air involved in flame retardation, thereby increasing the combustion temperature and reducing heat loss, and has high practical value.

[0045] For those skilled in the art, other various corresponding changes and modifications can be made according to the technical solutions and concepts described above, and all these changes and modifications shall belong to the protection scope of the patent claims of the present application.

Claims

1. A novel type of combustion burner for ladle heating, characterized in that: The baffle (10) is provided with a burner (20) on one side of the baffle (10) facing the baking bag (60) and a flue gas pipe (30) penetrating the baffle (10); The burner (20) comprises a mixed gas pipe (23) and a gas pipe (21) penetrating the baffle (10); The baffle (10) is provided with a heat exchange assembly (50) covering the flue gas pipe (30) and the mixed gas pipe (23) on the side away from the baking bag (60), and the heat exchange assembly (50) is internally divided into a hot gas cavity (55), a heat exchange cavity (56) and a flue gas cavity (58) by an outer cover (51), an inner cover (52) and a smoke baffle (57); The outer cover (51) is provided with an air inlet hole (54) for connecting the heat exchange cavity (56) with the outside air and a smoke exhaust hole (59) for connecting the flue gas cavity (58) with the outside, and the inner cover (52) is provided with a hot gas hole (53) for connecting the heat exchange cavity (56) and the hot gas cavity (55); The flue gas pipe (30) connects the inner cavity of the baking bag (60) with the flue gas cavity (58), and the rod body of the flue gas pipe (30) is located in the heat exchange cavity (56).

2. A new type of combustion burner for baking ladle according to claim 1, characterized in that: The outer cover (51) and the inner cover (52) are coaxial with each other, the air inlet hole (54) and the hot gas hole (53) are close to each other and a partition plate (40) is arranged between the air inlet hole (54) and the hot gas hole (53), and the partition plate (40) prolongs the airflow channel between the air inlet hole (54) and the hot gas hole (53).

3. A new type of combustion burner for baking ladle as claimed in claim 1, characterized in that: The mixed gas pipe (23) is arranged in a ring array with more than three around the gas pipe (21), and all the mixed gas pipes (23) are respectively connected with the gas pipe (21) through connecting pipes (22).

4. A new type of combustion burner for baking ladle according to claim 1, characterized in that: The outer side of the gas pipe (21) is provided with a heat insulation sleeve (24) covering the gas pipe (21) and protruding from the baffle (10).

5. A novel burner for baking ladle as claimed in claim 4, wherein: The heat insulation sleeve (24) is in a cylindrical structure and coaxially arranged with the inner cavity of the baking bag (60).

6. A new type of combustion burner for baking ladle as claimed in claim 4, characterized in that: The material of the heat insulation sleeve (24) is chromium steel jade.

7. A new type of combustion burner for baking ladle as claimed in claim 1, characterized in that: The flue gas pipe (30) is arranged in a ring array with more than eight around the heat insulation sleeve (24).

8. A new type of combustion burner for baking ladle as claimed in claim 1, characterized in that: The materials of the gas pipe (21), the connecting pipe (22) and the mixed gas pipe (23) are stainless steel.

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