Auxiliary combustion device of gasification furnace

Abstract

The utility model discloses a gasifier auxiliary combustion device, including furnace end structure and automatic ignition device, furnace end structure includes furnace end jacket, a plurality of combustion-supporting tuyeres and air volume regulation structure, combustion-supporting tuyeres are located inside the furnace end jacket, the air volume regulation structure is located outside the furnace end jacket. According to the utility model, the furnace end structure, the combustion-supporting tuyere, the central pipe, the air volume adjusting structure, the automatic ignition device, the circuit control structure and the air supply mechanism are arranged, the furnace end structure comprises the furnace end outer sleeve and the furnace end inner sleeve, the automatic ignition device comprises the flame monitoring terminal and the automatic ignition terminal, and air can be blown to the combustion-supporting tuyere through the air supply mechanism to realize the combustion-supporting effect; and flames can be detected in real time through the flame monitoring terminal, and when the flames at the secondary combustion port are suddenly extinguished in the combustion process of the gasification furnace, ignition is performed through the automatic ignition terminal, so that the complexity of manual ignition is avoided, and the leakage of harmful gas during manual ignition is also avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary combustion of solid fuel gasifiers, in particular to an auxiliary combustion device for a gasifier. Background Art

[0002] To meet the increasingly strict national requirements for environmental protection, the solid fuel all-gasification furnace technology suitable for rural use (Patent No.: ZL202323088741.3, Patent No.: ZL202321200203.6) has emerged. This all-gasification furnace can convert traditional energy sources such as coal, biomass pellets and briquettes into combustible gas, and through the secondary combustion of the combustible gas, achieve the effect of smokeless, dust-free and pollution-free to the environment.

[0003] However, the following two problems have occurred in the practice of this all-gasification furnace:

[0004] 1. When the combustible gas burns in the secondary combustion chamber, the ratio with the combustion-supporting air cannot be accurately adjusted, and it is difficult to reach the optimal ratio required for the combustion of air and combustible gas, which affects the combustion efficiency of the combustible gas.

[0005] 2. When the combustible gas burns in the combustion chamber, it encounters some special situations (such as when adding fuel and opening the feeding port, or when opening the furnace cover above the flame of the secondary combustion chamber to cook or boil water, due to the sudden change of the air flow and pressure in the furnace), which often causes the flame burning in the secondary combustion chamber to suddenly go out (since the gas produced by this gasifier is low-temperature gas, and the flame cannot auto-ignite after going out). At this time, if manual ignition is required, it is not only very inconvenient but also prone to leakage of toxic gases (a large amount of carbon monoxide is contained in the combustible gas). Therefore, it is extremely necessary to develop a new type of burner head that can not only effectively adjust the combustion ratio of air and combustible gas but also timely detect and automatically ignite in the case of sudden flame extinction.

[0006] In view of the above disadvantages, the utility model proposes an auxiliary combustion device for a gasifier, which is used in combination with all-gasification furnaces such as gasifiers (Patent No.: ZL202323088741.3, Patent No.: ZL202321200203.6), which will not only make it more convenient and safe for ordinary people to use this gasifier, but also bring better energy-saving and environmental protection effects. Summary of the Utility Model

[0007] The purpose of the utility model is to solve the shortcomings existing in the prior art, and to propose an auxiliary combustion device for a gasifier.

[0008] To achieve the above object, the utility model adopts the following technical solution: An auxiliary combustion device for a gasifier, comprising a burner head structure and an automatic ignition device. The burner head structure includes a burner head outer casing, a plurality of combustion air inlets and an air volume adjustment structure. The combustion air inlets are located inside the burner head outer casing, and the air volume adjustment structure is located outside the burner head outer casing. A passage is provided for communicating between the combustion air inlets and the air volume adjustment structure. The automatic ignition device includes a flame monitoring terminal, an automatic ignition terminal and a circuit control structure. The flame monitoring terminal and the automatic ignition terminal are both connected to the circuit control structure by electric wires, and at least one combustion air inlet is located below the flame monitoring terminal and the automatic ignition terminal.

[0009] Further, a air supply mechanism is provided in matching with the air volume adjustment structure, and a passage is provided for communicating between the air supply mechanism and the air volume adjustment structure.

[0010] Further, a burner head inner casing is provided inside the burner head outer casing, and the combustion air inlets are arranged on the burner head inner casing.

[0011] Further, a central pipe is provided inside the burner head outer casing, and the combustion air inlets are distributed on the central pipe.

[0012] Advantages of the utility model:

[0013] When the utility model is in use, for the auxiliary combustion device of the gasifier, the burner head structure, the combustion air inlets, the central pipe, the air volume adjustment structure, the automatic ignition device, the circuit control structure and the air supply mechanism are provided. The burner head structure includes a burner head outer casing and a burner head inner casing. The automatic ignition device includes a flame monitoring terminal and an automatic ignition terminal. The air supply mechanism can blow air into the combustion air inlets to achieve the effect of assisting combustion. The combustion air is adjusted by the air volume adjustment structure and then ejected from the combustion air inlets through the passage to achieve the optimal ratio of the combustion air to the combustible gas, improving the combustion efficiency. And the flame can be detected in real time through the flame monitoring terminal. When the flame at the secondary combustion port suddenly goes out during the combustion process of the gasifier, ignition is carried out again through the automatic ignition terminal, eliminating the cumbersome manual ignition and avoiding the leakage of harmful gases during manual ignition. Description of the drawings

[0014] In order to more clearly illustrate the technical solution of the utility model, the drawings required for use in the following description of the specific embodiments will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0015] Figure 1 : Perspective view of the first embodiment of the utility model;

[0016] Figure 2: Cross-sectional view of the first embodiment of the present utility model;

[0017] Figure 3 : Perspective view of the second embodiment of the present utility model;

[0018] Figure 4 : Cross-sectional view of the second embodiment of the present utility model;

[0019] Figure 5 : Schematic diagram of the replacement scheme of the combustion-supporting air inlet of the second embodiment of the present utility model;

[0020] Figure 6 : Schematic diagram of the replacement scheme of the automatic ignition device of the second embodiment of the present utility model.

[0021] The reference numerals are as follows:

[0022] 1. Burner head structure; 101. Burner head outer sleeve; 102. Burner head inner sleeve; 2. Combustion-supporting air inlet; 3. Central pipe; 4. Air volume adjustment structure; 5. Automatic ignition device; 6. Circuit control structure; 7. Air supply mechanism. Detailed implementation manners

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0024] Embodiment 1

[0025] As Figure 1 - Figure 2 shown, it relates to an auxiliary combustion device for a gasifier, which includes a burner head structure 1 and an automatic ignition device 5. The burner head structure 1 includes a burner head outer sleeve 101, a plurality of combustion-supporting air inlets 2 and an air volume adjustment structure 4. The combustion-supporting air inlets 2 are located inside the burner head outer sleeve 101, and the air volume adjustment structure 4 is located outside the burner head outer sleeve 101. A channel is used to connect the combustion-supporting air inlets 2 and the air volume adjustment structure 4. The automatic ignition device 5 includes a flame monitoring terminal, an automatic ignition terminal and a circuit control structure 6. The flame monitoring terminal and the automatic ignition terminal are both connected to the circuit control structure 6 through wires, and at least one combustion-supporting air inlet 2 is located below the flame monitoring terminal and the automatic ignition terminal.

[0026] In this embodiment, the flame monitoring terminal and the automatic ignition terminal can be in a split form or a combined form. The flame monitoring terminal is a flame ionization sensor needle, and the model of the automatic ignition terminal is a high-voltage electronic ignition needle. Through the flame monitoring terminal, it is possible to monitor in real time whether the flame in the furnace head structure 1 is extinguished, and feedback the monitoring signal to the circuit control structure 6. If the flame goes out, the circuit control structure 6 controls the automatic ignition terminal to re-ignite. The circuit control structure 6 here can be independent or connected to the controller of the gasifier itself.

[0027] A blower mechanism 7 is provided to match the air volume adjustment structure 4, and the blower mechanism 7 and the air volume adjustment structure 4 are connected through a channel.

[0028] In this embodiment, the blower mechanism 7 can be a combustion-supporting blower or the original air supply device of the furnace body. The air volume adjustment structure 4 uses an air volume valve. When blowing air to the combustion-supporting air inlet 2 through the blower mechanism 7, the size of the air volume can be adjusted through the air volume adjustment structure 4, so that flexible adjustment can be made according to the actual usage situation.

[0029] Inside the furnace head outer sleeve 101, there is a furnace head inner sleeve 102, and the combustion-supporting air inlet 2 is arranged on the furnace head inner sleeve 102.

[0030] In this embodiment, the combustion-supporting air inlets 2 are distributed in a circle along the side wall of the furnace head inner sleeve 102 and are equally spaced. The air blown through the blower mechanism 7 to the combustion-supporting air inlets 2 can enter the furnace head inner sleeve 102 evenly from all around along the combustion-supporting air inlets 2, achieving the combustion-supporting effect.

[0031] Embodiment Two

[0032] As Figure 3 - Figure 4 shown, as an alternative to the position distribution of the combustion-supporting air inlets 2 in Embodiment One, in this embodiment, a central pipe 3 is provided inside the furnace head outer sleeve 101, and the combustion-supporting air inlets 2 are distributed on the central pipe 3.

[0033] In this embodiment, the combustion-supporting air inlets 2 are distributed in a circle along the top of the central pipe 3 and are equally spaced. When the air blown by the blower mechanism 7 enters the central pipe 3 along the channel, it will be discharged from the combustion-supporting air inlets 2, realizing the air intake from the middle of the furnace head structure 1 and achieving the combustion-supporting effect.

[0034] As Figure 5 shown, among them, the combustion-supporting air inlets 2 can also be annular slits.

[0035] As Figure 6 shown, in this embodiment, the flame monitoring terminal and the automatic ignition terminal in the automatic ignition device 5 can also be in a split form.

[0036] Working principle: The burner head structure 1 is installed in the secondary combustion chamber of the gasifier. During the fuel combustion process, the air supply mechanism 7 is started. The air supply mechanism 7 sends air into the burner head structure 1 along the channel and the air volume regulating structure 4, and then the air is discharged along the combustion-aiding air vents 2 to achieve the combustion-aiding effect. If the flame goes out during the combustion process, the flame monitoring terminal will feedback a signal to the circuit control structure 6, and the circuit control structure 6 will control the automatic ignition terminal to re-ignite.

[0037] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to only the specific implementation manners. Obviously, according to the content of this specification, many modifications and changes can be made. These embodiments are selected and specifically described in this specification to better explain the principle and practical application of the present utility model, so that those skilled in the relevant technical field can well understand and utilize the present utility model. The present utility model is only limited by the claims and their full scope and equivalents.

Claims

1. An auxiliary combustion device for a gasifier, characterized in that: It includes a burner head structure (1) and an automatic ignition device (5). The burner head structure (1) includes a burner head outer casing (101), a plurality of combustion air inlets (2) and an air volume adjustment structure (4). The combustion air inlets (2) are located inside the burner head outer casing (101), and the air volume adjustment structure (4) is located outside the burner head outer casing (101). A channel is used to connect the combustion air inlets (2) and the air volume adjustment structure (4). The automatic ignition device (5) includes a flame monitoring terminal, an automatic ignition terminal and a circuit control structure (6). The flame monitoring terminal and the automatic ignition terminal are both connected to the circuit control structure (6) by wires, and at least one combustion air inlet (2) is located below the flame monitoring terminal and the automatic ignition terminal.

2. The auxiliary combustion device of a gasifier according to claim 1, characterized in that: A air supply mechanism (7) is provided to match the air volume adjustment structure (4), and a channel is used to connect the air supply mechanism (7) and the air volume adjustment structure (4).

3. The auxiliary combustion device for a gasifier according to claim 1, characterized in that: A burner head inner casing (102) is provided inside the burner head outer casing (101), and the combustion air inlets (2) are arranged on the burner head inner casing (102).

4. An auxiliary combustion device for a gasifier according to claim 1, characterized in that: A central pipe (3) is provided inside the burner head outer casing (101), and the combustion air inlets (2) are distributed on the central pipe (3).

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