A boiler furnace air conditioning and distribution device

Abstract

This utility model relates to the technical field of boiler furnace air conditioning and distribution devices, and discloses a boiler furnace air conditioning and distribution device, including a furnace body, which is the combustion space of the boiler and has a hollow structure; a primary air inlet duct connected to the bottom of the furnace body for inputting primary air; a secondary air inlet duct connected to different height positions in the upper middle part of the furnace body for inputting secondary air; a primary air volume regulating valve installed on the primary air inlet duct for regulating the primary air volume; and a secondary air volume regulating valve installed on the secondary air inlet duct for regulating the secondary air volume. In this utility model, the inclined air outlet of the air cap at the bottom of the primary air inlet duct and the air distributor in the upper middle part of the secondary air inlet duct cooperate to achieve precise stratified distribution of air in the furnace body. The tangential primary air and the downwardly inclined secondary air form a composite flow field, enhancing the mixing efficiency of fuel and air and improving combustion completeness.

Description

Technical Field

[0001] This utility model relates to the technical field of boiler furnace air conditioning and distribution devices, and in particular to a boiler furnace air conditioning and distribution device. Background Technology

[0002] The boiler furnace is the key area in a boiler used to burn fuel and generate heat energy. It ensures the boiler's efficient operation through effective heat conversion and transfer. During boiler operation, the temperature distribution and combustion efficiency within the furnace directly affect the boiler's performance; therefore, a reasonable furnace design is crucial for ensuring the stability and efficiency of the combustion process.

[0003] A traditional boiler furnace typically consists of several important parts, including the furnace body, burners, heat exchange surfaces, and flue gas ducts. These parts work together to ensure that fuel is fully combusted in the furnace, while the heat generated is transferred to boiler water or other media through a heat exchange process, thereby producing the required steam or hot water.

[0004] Uneven air distribution in the furnace of traditional boilers is usually caused by design problems with airflow rate and path. For example, improper burner location and quantity, or uneven air supply distribution, can lead to incomplete combustion in some areas. Uneven air distribution means that some fuel does not receive sufficient oxygen, resulting in incomplete combustion, which in turn reduces thermal efficiency, increases pollutant emissions, and may even damage the boiler equipment. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a boiler furnace air conditioning and distribution device, which aims to improve the problem of uneven air distribution in traditional boiler furnaces causing incomplete combustion and thus reducing thermal efficiency.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a boiler furnace air conditioning and distribution device, comprising:

[0007] The main furnace, which serves as the combustion space for the boiler, has a hollow structure.

[0008] The primary air intake duct is connected to the bottom of the furnace body and is used to input primary air;

[0009] Secondary air intake ducts are connected to different height positions in the upper part of the furnace body for inputting secondary air;

[0010] The primary air volume regulating valve is installed on the primary air inlet duct and is used to regulate the primary air volume.

[0011] The secondary air volume regulating valve is installed on the secondary air inlet duct and is used to regulate the secondary air volume.

[0012] Air caps, multiple air caps are evenly distributed at the bottom of the furnace body and the connection with the primary air inlet pipe, and the surface is provided with multiple air outlet holes;

[0013] The wind shield, located on top of each wind cap, has a truncated cone structure with a base diameter larger than the top diameter of the wind cap, and multiple ventilation gaps on its surface;

[0014] The air distribution ring main pipe is located in the upper middle part of the furnace body and is connected to the secondary air intake pipe.

[0015] Air distribution branch pipes, multiple air distribution branch pipes extend from the main air distribution ring pipe and are evenly distributed, with downward-sloping air outlets at the ends;

[0016] Temperature sensors are installed at different heights inside the furnace body to monitor the temperature inside the furnace.

[0017] The controller is electrically connected to the primary air volume regulating valve, the secondary air volume regulating valve, and the temperature sensor. Based on the temperature signal fed back by the temperature sensor, it controls the opening degree of the primary and secondary air volume regulating valves.

[0018] As a further description of the above technical solution:

[0019] The air outlet of the hood is opened at an angle, so that the primary air blown out has a certain tangential angle.

[0020] As a further description of the above technical solution:

[0021] The secondary air volume regulating valve has different adjustment ranges depending on its height on the secondary air inlet duct, with the lower secondary air volume regulating valve having a larger adjustment range than the upper secondary air volume regulating valve.

[0022] As a further description of the above technical solution:

[0023] The air distribution annular main pipe is connected to the secondary air intake pipe via a rotatable joint, allowing the air distribution annular main pipe to rotate within a certain angle range.

[0024] As a further description of the above technical solution:

[0025] Both the primary and secondary air intake ducts are wrapped with an insulation layer to reduce heat loss.

[0026] As a further description of the above technical solution:

[0027] The furnace body is provided with an observation window on its wall to observe the combustion and air distribution inside the furnace.

[0028] This utility model has the following beneficial effects:

[0029] 1. In this utility model, the inclined air outlet of the air cap at the bottom of the primary air inlet pipe and the air distributor in the upper part of the secondary air inlet pipe are used to achieve precise stratified distribution of air in the furnace body. The tangential primary air and the downward inclined secondary air form a composite flow field, which enhances the mixing efficiency of fuel and air and improves the completeness of combustion.

[0030] 2. In this utility model, the primary air volume regulating valve and the secondary air volume regulating valve are adjusted in conjunction with the temperature sensor and the controller. The air volume can be dynamically matched according to the furnace temperature. Combined with the rotatable air distribution ring main pipe and the layered air valves with different adjustment ranges, the combustion efficiency can be optimized and the heat loss can be reduced through the insulation layer, thereby reducing the operating energy consumption. Attached Figure Description

[0031] Figure 1 This is a perspective view of a boiler furnace air conditioning and distribution device proposed in this utility model;

[0032] Figure 2 This is a schematic diagram of the main body of a boiler furnace air conditioning and distribution device proposed in this utility model;

[0033] Figure 3 This is a schematic diagram of the air cap of a boiler furnace air conditioning and distribution device proposed in this utility model.

[0034] Legend:

[0035] 1. Furnace body; 2. Primary air inlet duct; 3. Secondary air inlet duct; 4. Primary air volume regulating valve; 5. Secondary air volume regulating valve; 6. Air cap; 7. Air outlet; 8. Windproof cover; 9. Ventilation gap; 10. Air distribution ring main pipe; 11. Air distribution branch pipe; 12. Air outlet; 13. Temperature sensor; 14. Controller; 15. Insulation layer; 16. Observation window. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] Reference Figures 1-3 One embodiment of this utility model is a boiler furnace air conditioning and distribution device, characterized in that it includes:

[0038] The main furnace body 1 is the combustion space of the boiler and has a hollow structure;

[0039] The primary air intake duct 2 is connected to the bottom of the furnace body 1 and is used to input primary air;

[0040] Secondary air intake pipe 3 is connected to different height positions in the upper part of the furnace body 1 for inputting secondary air;

[0041] The primary air volume regulating valve 4 is installed on the primary air inlet duct 2 and is used to regulate the primary air volume;

[0042] The secondary air volume regulating valve 5 is installed on the secondary air inlet duct 3 and is used to regulate the secondary air volume.

[0043] Air caps 6, multiple air caps 6 are evenly distributed at the bottom of the furnace body 1 and the connection between the primary air inlet pipe 2, and multiple air outlet holes 7 are provided on the surface;

[0044] A wind shield 8 is set on top of each wind cap 6, and has a truncated cone structure. The diameter of the bottom surface is larger than the diameter of the top surface of the wind cap 6, and the surface is provided with multiple ventilation gaps 9.

[0045] The air distribution annular main pipe 10 is located in the upper middle part of the furnace body 1 and is connected to the secondary air intake pipe 3.

[0046] Air distribution branch pipe 11, multiple air distribution branch pipes 11 extend from the air distribution annular main pipe 10 and are evenly distributed, with downwardly inclined air outlets 12 at the ends;

[0047] Temperature sensors 13 are installed at different heights inside the furnace body 1 to monitor the temperature inside the furnace.

[0048] The controller 14 is electrically connected to the primary air volume regulating valve 4, the secondary air volume regulating valve 5, and the temperature sensor 13. Based on the temperature signal fed back by the temperature sensor 13, it controls the opening of the primary air volume regulating valve 4 and the secondary air volume regulating valve 5. The air outlet 7 of the air cap 6 is opened at an angle, so that the blown primary air has a certain tangential angle. The secondary air volume regulating valve 5 has different adjustment ranges depending on its height on the secondary air inlet duct 3. The adjustment range of the lower secondary air volume regulating valve 5 is larger than that of the upper secondary air volume regulating valve 5. The air distribution annular main pipe 10 is connected to the secondary air inlet duct 3 through a rotatable joint, so that the air distribution annular main pipe 10 can rotate within a certain angle range. The primary air inlet duct 2 and the secondary air inlet duct 3 are both wrapped with a heat insulation layer 15 to reduce heat loss. An observation window 16 is provided on the wall of the furnace body 1 for observing the combustion and air distribution in the furnace.

[0049] Working Principle: During operation, primary air enters the furnace through the primary air inlet duct 2 and the air cap 6 installed at the bottom of the furnace body 1. The inclined air outlet 7 on the air cap 6 causes the primary air to be blown out at a tangential angle, forming a bottom airflow field. Secondary air enters through the secondary air inlet duct 3, passes through the air distribution annular main pipe 10 and air distribution branch pipe 11 in the upper part of the furnace body 1, and is sent into the furnace through the downwardly inclined air outlet 12 to assist combustion. During operation, temperature sensors 13 distributed at different heights within the furnace body 1 monitor the temperature in real time and feed the data back to the controller 14. The controller 14 controls the primary air volume regulating valve 4 and the secondary air volume regulating valve 5 to adjust the air volume according to the preset curve. At the same time, the secondary air volume regulating valves 5 at different heights on the secondary air inlet duct 3 achieve stratified air distribution due to the difference in their adjustment ranges. In addition, the air distribution annular main pipe 10 can be rotated to adjust the secondary air distribution angle, the insulation layer 15 outside the primary air intake pipe 2 and the secondary air intake pipe 3 reduces heat loss, and the operator can also view the situation inside the furnace through the observation window 16, ultimately achieving efficient and precise air distribution and combustion optimization inside the furnace.

[0050] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A boiler furnace air conditioning and distribution device, characterized in that, include: The main body of the furnace (1) is the combustion space of the boiler and has a hollow structure; The primary air intake pipe (2) is connected to the bottom of the furnace body (1) for inputting primary air; Secondary air intake pipe (3) is connected to different height positions in the upper part of the furnace body (1) for inputting secondary air; A primary air volume regulating valve (4) is installed on the primary air inlet duct (2) to regulate the primary air volume; A secondary air volume regulating valve (5) is installed on the secondary air inlet pipe (3) to regulate the secondary air volume; Air caps (6), multiple air caps (6) are evenly distributed at the bottom of the furnace body (1) and the connection between the primary air inlet pipe (2), and multiple air outlet holes (7) are provided on the surface; Windproof cover (8) is set on the top of each wind cap (6), and has a truncated cone structure. The bottom diameter is larger than the top diameter of the wind cap (6), and the surface is provided with multiple ventilation gaps (9). An air distribution ring main pipe (10) is located in the upper middle part of the furnace body (1) and is connected to the secondary air intake pipe (3); Air distribution branch pipe (11), multiple air distribution branch pipes (11) extend from the air distribution ring main pipe (10) and are evenly distributed, with downward-sloping air outlets (12) at the ends. Temperature sensors (13) are installed at different heights inside the furnace body (1) to monitor the temperature inside the furnace. The controller (14) is electrically connected to the primary air volume regulating valve (4), the secondary air volume regulating valve (5) and the temperature sensor (13). Based on the temperature signal fed back by the temperature sensor (13), the controller controls the opening degree of the primary air volume regulating valve (4) and the secondary air volume regulating valve (5).

2. The boiler furnace air conditioning and distribution device according to claim 1, characterized in that: The air outlet (7) of the wind cap (6) is opened at an angle, so that the primary air blown out has a certain tangential angle.

3. The boiler furnace air conditioning and distribution device according to claim 1, characterized in that: The secondary air volume regulating valve (5) has different adjustment ranges depending on its height on the secondary air inlet duct (3). The adjustment range of the lower secondary air volume regulating valve (5) is greater than that of the upper secondary air volume regulating valve (5).

4. The boiler furnace air conditioning and distribution device according to claim 1, characterized in that: The air distribution annular main pipe (10) is connected to the secondary air intake pipe (3) through a rotatable joint, so that the air distribution annular main pipe (10) can rotate within a certain angle range.

5. A boiler furnace air conditioning and distribution device according to claim 1, characterized in that: Both the primary air intake duct (2) and the secondary air intake duct (3) are wrapped with an insulation layer (15) to reduce heat loss.

6. The boiler furnace air conditioning and distribution device according to claim 1, characterized in that: The furnace body (1) is provided with an observation window (16) on its wall surface for observing the combustion and air distribution inside the furnace.

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