Heat accumulating type combustion temperature control air guide structure

Abstract

The utility model belongs to the technical field of heat accumulating type combustion, and particularly relates to a heat accumulating type combustion temperature control air guide structure which comprises a combustion furnace, a first burner, a second burner and an air guide mechanism. The air guide mechanism comprises a first guide plate, a second guide plate, a third guide plate, a fourth guide plate, a high-speed port, a low-speed port, a circulation pipe, a circulation cavity and a screwed plug. Through the air guide mechanism, the high-speed port, the low-speed ports, the circulation pipe and the circulation cavity, combustion air (or fuel gas) passing through the high-speed port can continuously circulate at a high speed, high-temperature combustion is maintained, a core high-temperature area is formed in the combustion furnace, on the contrary, the combustion air (or fuel gas) can circulate at a low speed when passing through the two sets of large low-speed ports, and the combustion effect is improved. The wall of the combustion furnace is protected, heat loss is reduced, airflow distribution, path and direction can be adjusted, gradient temperature is formed, and temperature distribution in the combustion furnace is balanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of regenerative combustion, in particular to a regenerative combustion temperature control air guide structure. BACKGROUND

[0002] Regenerative combustion technology is a kind of high-efficiency energy-saving combustion technology, which is widely used in industrial furnaces (such as steel, glass, ceramic industries, etc.), and the combustion air or gas is preheated by recovering the waste heat of flue gas, which significantly improves the thermal efficiency and reduces the energy consumption. Temperature control is mainly controlled by the exchange function of heat storage and release of the regenerator system.

[0003] The combustion furnace cannot adjust the distribution, flow path, speed and direction of the combustion air (or gas) inside, which affects the combustion process and temperature field, resulting in uneven temperature. Therefore, an air guide structure is needed to adjust the distribution of combustion air (or gas) in the burner. CONTENT OF THE UTILITY MODEL

[0004] In view of the deficiencies of the prior art, the utility model provides a regenerative combustion temperature control air guide structure to solve the problems raised in the above background technology.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a regenerative combustion temperature control air guide structure, comprising a combustion furnace, a first burner, a second burner, an air guide mechanism, the first burner is provided with an air guide mechanism at the outer end, one side of the combustion furnace is provided with a first regenerative chamber, the other side of the combustion furnace is provided with a second regenerative chamber, a connecting pipe is arranged between the first regenerative chamber and the second regenerative chamber, a four-way reversing valve is arranged on the connecting pipe, an air inlet pipe is arranged at one end of the four-way reversing valve, and an exhaust pipe is arranged at the other side of the four-way reversing valve.

[0006] The air guide mechanism comprises a first guide plate, a second guide plate, a third guide plate, a fourth guide plate, a high-speed port, a low-speed port, a flow pipe, a flow cavity and a plug, the high-speed port is formed between the second guide plate and the third guide plate, the low-speed port is formed between the first guide plate and the second guide plate and between the third guide plate and the fourth guide plate, the plug is arranged at the outer end of the flow pipe, the flow cavity is arranged in the fourth guide plate, and the flow pipe is arranged on both sides of the fourth guide plate.

[0007] As a preferred technical scheme of the utility model: the outer end of the first burner and the second burner is fixedly installed with an air guide mechanism, the air guide mechanism has two groups in total, and the second burner has two groups in total.

[0008] As a preferred technical scheme of the utility model: the first guide plate, the second guide plate, the third guide plate and the fourth guide plate are integrally formed with the air guide mechanism.

[0009] As a preferred technical scheme of the utility model: the air guide mechanism is formed by 310S stainless steel processing, and the opening section of the high-speed opening is smaller than that of the low-speed opening.

[0010] As a preferred technical scheme of the utility model: the first guide plate, the second guide plate, the third guide plate and the fourth guide plate are all provided with flow-through cavities, and the first guide plate, the second guide plate, the third guide plate and the fourth guide plate are both connected with flow-through pipes, the flow-through pipes and the flow-through cavities are in communication with each other, the outer ends of the flow-through pipes extend out of the combustion furnace, the flow-through pipes and the combustion furnace are sealed, and the plug and the flow-through pipe are matched.

[0011] As a preferred technical scheme of the utility model: the first burner is connected with the first regenerative chamber and the combustion furnace, the second burner is connected with the second regenerative chamber and the combustion furnace, and the first regenerative chamber and the second regenerative chamber are both provided with regenerative bodies.

[0012] As a preferred technical scheme of the utility model: the connecting pipe is connected with the first regenerative chamber and the second regenerative chamber, the connecting pipe connects two ports of the four-way reversing valve, and the air inlet pipe and the smoke exhaust pipe connect the other two ports of the four-way reversing valve.

[0013] Compared with the prior art, the utility model provides a regenerative combustion temperature control air guide structure, which has the following beneficial effects:

[0014] The regenerative combustion temperature control air guide structure is provided with an air guide mechanism, a high-speed opening, a low-speed opening, a flow-through pipe and a flow-through cavity, and the first burner is taken as an example. When the combustion air (or gas) is sprayed from the first burner, it will pass through the air guide mechanism, and the combustion air (or gas) is divided into several strands and discharged into the combustion furnace from the high-speed opening with a small opening in the middle and the two groups of low-speed openings with large openings distributed above and below. The combustion air (or gas) passing through the high-speed opening can continuously flow at high speed, maintain high-temperature combustion, form a core high-temperature zone in the combustion furnace, and conversely, the combustion air (or gas) passing through the two groups of low-speed openings with large openings will flow at low speed, protect the combustion furnace wall and reduce heat loss, adjust the airflow distribution, path and direction, form a gradient temperature, and balance the temperature distribution in the combustion furnace. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a schematic view of the air guide mechanism of the utility model in the combustion furnace.

[0016] Figure 2 It is a structural schematic view of the air guide mechanism of the utility model.

[0017] Figure 3 It is a schematic view of the flow-through cavity of the utility model.

[0018] Figure 4 The utility model discloses a flow pipe and plug structure schematic diagram.

[0019] In the figure: 1, combustion furnace;2, first burner;3, second burner;4, air guide mechanism;401, first guide plate;402, second guide plate;403, third guide plate;404, fourth guide plate;405, high speed through port;406, low speed through port;407, flow pipe;408, flow cavity;409, plug;5, first regenerative chamber;6, second regenerative chamber;7, air inlet pipe;8, connecting pipe;9, four-way reversing valve;10, flue. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0021] Please refer to Figures 1-4 In the embodiment, the air guide structure for controlling the temperature of regenerative combustion comprises a combustion furnace 1, a first burner 2, a second burner 3 and an air guide mechanism 4. The air guide mechanism 4 is arranged at the outer end of the first burner 2. The combustion furnace 1 is provided with a first regenerative chamber 5 on one side and a second regenerative chamber 6 on the other side. The first regenerative chamber 5 and the second regenerative chamber 6 are connected by a connecting pipe 8. The connecting pipe 8 is provided with a four-way reversing valve 9. The four-way reversing valve 9 is provided with an air inlet pipe 7 at one end and a flue 10 at the other end.

[0022] The air guide mechanism 4 can adjust the air distribution, path and direction, so that the gradient temperature is formed and the temperature distribution in the combustion furnace 1 is balanced.

[0023] The air guide mechanism 4 comprises a first guide plate 401, a second guide plate 402, a third guide plate 403, a fourth guide plate 404, a high speed through port 405, a low speed through port 406, a flow pipe 407, a flow cavity 408 and a plug 409. The high speed through port 405 is formed between the second guide plate 402 and the third guide plate 403. The low speed through port 406 is formed between the first guide plate 401 and the second guide plate 402 and between the third guide plate 403 and the fourth guide plate 404. The plug 409 is arranged at the outer end of the flow pipe 407. The flow cavity 408 is arranged in the fourth guide plate 404. The flow pipe 407 is arranged on the two sides of the fourth guide plate 404.

[0024] The first guide plate 401, the second guide plate 402, the third guide plate 403 and the fourth guide plate 404 are internally ventilated by the flow-through cavity 408 and the flow-through pipe 407, so that the cooling effect is achieved, and high-temperature deformation is avoided.

[0025] In the embodiment, the air guide mechanism 4 is fixedly installed at the outer end of the first burner 2 and the second burner 3, and there are two groups of the air guide mechanism 4, and there are two groups of the second burner 3. The first guide plate 401, the second guide plate 402, the third guide plate 403 and the fourth guide plate 404 are integrally formed with the air guide mechanism 4.

[0026] Specifically, the first burner 2 and the second burner 3 can catalyze the combustion of the combustion-supporting air (or gas).

[0027] In the embodiment, the air guide mechanism 4 is formed by processing 310S stainless steel. The opening cross section of the high-speed through port 405 is smaller than that of the low-speed through port 406. The flow-through cavity 408 is arranged in the first guide plate 401, the second guide plate 402, the third guide plate 403 and the fourth guide plate 404. The flow-through pipe 407 is connected to the two sides of the first guide plate 401, the second guide plate 402, the third guide plate 403 and the fourth guide plate 404. The flow-through pipe 407 and the flow-through cavity 408 are in communication with each other. The outer end of the flow-through pipe 407 extends out of the combustion furnace 1. The flow-through pipe 407 and the combustion furnace 1 are sealed. The plug 409 is matched with the flow-through pipe 407.

[0028] Specifically, the high-speed through port 405 can continuously flow the combustion-supporting air (or gas) at high speed, maintain high-temperature combustion, and form a core high-temperature zone in the combustion furnace 1. The low-speed through port 406 can flow the combustion-supporting air (or gas) at low speed, protect the wall of the combustion furnace 1 and reduce heat loss.

[0029] In the embodiment, the first burner 2 is connected to the first regenerator 5 and the combustion furnace 1. The second burner 3 is connected to the second regenerator 6 and the combustion furnace 1. The first regenerator 5 and the second regenerator 6 are internally provided with regenerators. The connection pipe 8 is connected to the first regenerator 5 and the second regenerator 6. The connection pipe 8 is connected to two ports of the four-way reversing valve 9. The gas inlet pipe 7 and the smoke exhaust pipe 10 are connected to the other two ports of the four-way reversing valve 9.

[0030] Specifically, the four-way reversing valve 9 can flexibly adjust the passageway between the gas inlet pipe 7, the smoke exhaust pipe 10 and the connection pipe 8 according to requirements.

[0031] The working principle and use process of the utility model are as follows: adjusting the four-way reversing valve 9, combustion-supporting air (or gas) enters from the air inlet pipe 7, enters the first regenerator 5 through the connecting pipe 8 and makes it burn in the combustion furnace 1 to produce high-temperature flue gas through the first burner 2, the high-temperature flue gas enters the second regenerator 6 from the second burner 3, the heat is absorbed by the heat storage body in the second regenerator 6, and the flue gas is discharged from the flue gas discharge pipe 10, then the air flow direction is switched through the four-way reversing valve 9, the combustion-supporting air (or gas) enters the second regenerator 6 and absorbs the heat of the heat storage body in the second regenerator 6, the combustion-supporting air (or gas) is preheated to high temperature, then enters and is sprayed out from the second burner 3 and generates high-temperature flue gas in the combustion chamber, the high-temperature flue gas enters the first regenerator 5 from the first burner 2, the heat is absorbed by the heat storage body in the first regenerator 5, and the flue gas is discharged from the flue gas discharge pipe 10, and the above process is repeated to realize efficient heat recovery;

[0032] In the heat recovery process, taking the first burner 2 as an example, the combustion-supporting air (or gas) sprayed out from the first burner 2 passes through the air guide mechanism 4, and the combustion-supporting air (or gas) is finally divided into several parts and discharged into the combustion furnace 1 from the middle high-speed through port 405 with small opening and the two groups of low-speed through ports 406 with large opening distributed above and below, because the opening of the high-speed through port 405 is small, the cross-sectional area is reduced, so that the flow rate is increased to maintain constant flow, therefore the combustion-supporting air (or gas) passing through the high-speed through port 405 can continuously flow at high speed, maintain high-temperature combustion, and form a core high-temperature area in the combustion furnace 1, on the contrary, the combustion-supporting air (or gas) passing through the two groups of low-speed through ports 406 with large opening flows at low speed, protects the wall of the combustion furnace 1 and reduces heat loss, can adjust the air flow distribution, path and direction, forms a gradient temperature, balances the temperature distribution in the combustion furnace 1, and the principle of the air guide mechanism 4 of the second burner 3 is the same as the above, the plug 409 on the flow-through pipe 407 on the two sides of the air guide mechanism 4 is removed, so that the external air can flow in the flow-through cavity 408, and the flow of the air can appropriately cool the first guide plate 401, the second guide plate 402, the third guide plate 403 and the fourth guide plate 404, and prevent high-temperature deformation.

[0033] Finally, it should be noted that: the above only for preferred embodiments of the utility model, and does not limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features. Any modification, equivalent replacement, improvement etc. within the spirit and principle of the utility model, should be included in the protection scope of the utility model.

Claims

1. A heat accumulating combustion temperature control air guide structure, comprising a combustion furnace (1), a first burner (2), a second burner (3), and an air guide mechanism (4), characterized in that: The first burner (2) is provided with an air guide mechanism (4), one side of the combustion furnace (1) is provided with a first regenerator (5), the other side of the combustion furnace (1) is provided with a second regenerator (6), the first regenerator (5) and the second regenerator (6) are provided with a connecting pipe (8), the connecting pipe (8) is provided with a four-way reversing valve (9), one end of the four-way reversing valve (9) is provided with an air inlet pipe (7), the other side of the four-way reversing valve (9) is provided with a smoke exhaust pipe (10). The air guide mechanism (4) comprises a first guide plate (401), a second guide plate (402), a third guide plate (403), a fourth guide plate (404), a high-speed through hole (405), a low-speed through hole (406), a flow pipe (407), a flow cavity (408) and a thread protector (409), the high-speed through hole (405) is formed between the second guide plate (402) and the third guide plate (403), the low-speed through hole (406) is formed between the first guide plate (401) and the second guide plate (402) and between the third guide plate (403) and the fourth guide plate (404), the thread protector (409) is arranged at the outer end of the flow pipe (407), the flow cavity (408) is arranged in the fourth guide plate (404), and the flow pipe (407) is arranged on both sides of the fourth guide plate (404).

2. The heat accumulating combustion temperature control air guide structure according to claim 1, characterized in that: The outer ends of the first burner (2) and the second burner (3) are fixedly installed with air guide mechanisms (4), and the air guide mechanisms (4) are provided in two groups.

3. The heat accumulating combustion temperature control air guide structure according to claim 1, characterized in that: The first guide plate (401), the second guide plate (402), the third guide plate (403) and the fourth guide plate (404) are integrally formed with the air guide mechanism (4).

4. The heat accumulating combustion temperature control air guide structure according to claim 1, characterized in that: The air guide mechanism (4) is formed by processing 310S stainless steel, and the opening cross section of the high-speed through hole (405) is smaller than that of the low-speed through hole (406).

5. The heat accumulating combustion temperature control air guide structure according to claim 1, characterized in that: Flow cavities (408) are arranged in the first guide plate (401), the second guide plate (402), the third guide plate (403) and the fourth guide plate (404), flow pipes (407) are connected to both sides of the first guide plate (401), the second guide plate (402), the third guide plate (403) and the fourth guide plate (404), the flow pipes (407) and the flow cavities (408) are in communication with each other, the outer ends of the flow pipes (407) extend out of the combustion furnace (1), the flow pipes (407) are sealed with the combustion furnace (1), and the thread protector (409) is matched with the flow pipe (407).

6. The heat storage combustion temperature control air guide structure according to claim 1, characterized in that: The first burner (2) is connected with the first regenerator (5) and the combustion furnace (1), the second burner (3) is connected with the second regenerator (6) and the combustion furnace (1), and the first regenerator (5) and the second regenerator (6) are provided with regenerators.

7. The heat accumulating combustion temperature control air guide structure according to claim 1, characterized in that: The connecting pipe (8) is connected with the first regenerator (5) and the second regenerator (6), the connecting pipe (8) is connected with two ports of the four-way reversing valve (9), the air inlet pipe (7) and the smoke exhaust pipe (10) are connected with the other two ports of the four-way reversing valve (9).

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