A new type of low-load stable combustion high-temperature corrosion-resistant combustion device

Abstract

The utility model discloses a novel low load steady combustion high temperature corrosion combustion device, including burner machine shell, be equipped with auxiliary pressure reducing tank in burner machine shell below, the utility model discloses being equipped with respectively in the auxiliary pressure reducing tank and is pressed into the warehouse with the pressure pipe, and the pressure pipe middle part is equipped with respectively first baffle and second baffle, and simultaneously first baffle side surface is equipped with circle insertion groove part and the cooperation of circle insertion block part in second baffle, be equipped with a plurality of triangular blocks between first baffle and second baffle, and triangular block both sides upper middle part is equipped with guide column and sliding block respectively, and simultaneously guide column inserts into the strip hole part of second baffle, and the sliding groove part cooperation of sliding block and first baffle side surface is equipped with, be equipped with worm wheel tooth surface on second baffle side surface, and worm wheel tooth surface and worm engage, adopt the cooperation between the internal structure of auxiliary pressure reducing tank, effectively reduce and constant to the high load of burner machine shell inside, avoid the influence of the use of the subsequent boiler after the slagging of combustion.

Description

Technical Field

[0001] This utility model relates to the field of combustion device technology, specifically to a novel low-load stable combustion and high-temperature corrosion resistant combustion device. Background Technology

[0002] The main function of a boiler burner is to achieve high-efficiency combustion, stable flame morphology, and reduced pollutant emissions by precisely controlling the mixing ratio of fuel and air and the combustion process. Specifically, its core functions can be summarized as follows: It mixes pulverized coal, natural gas, and other fuels with primary / secondary air in a specific ratio, forming a uniform combustible mixture through atomizing nozzles or swirl devices. Using swirl or direct-flow structures (such as swirl burners and direct-flow burners), it enhances turbulent mixing through aerodynamic field design, improving combustion efficiency. Through pre-combustion chambers, bluff bodies, and other structures (such as bluff body burners), it creates a high-temperature recirculation zone near the nozzle, entraining hot flue gas from the furnace and providing a heat source for fuel ignition. Employing staged combustion or rich-lean separation technology (such as rich-lean burners), it creates localized high temperatures in high-concentration areas, shortening the ignition distance and enhancing combustion stability. By adjusting the primary / secondary air ratio, damper opening, and fuel supply, it flexibly responds to changes in boiler load and the demand for different coal types. For example, hot primary air is used to preheat pulverized coal, while cold primary air regulates the mixing temperature and optimizes thermal efficiency. Existing traditional burners cause slagging after combustion when operating in boilers at high loads, affecting subsequent boiler operation. Therefore, a novel low-load, stable-fire, high-temperature corrosion-resistant combustion device is proposed to address this problem. Utility Model Content

[0003] The purpose of this invention is to provide a novel low-load, stable-fire, high-temperature corrosion-resistant combustion device to solve the problems mentioned in the background.

[0004] To solve the above-mentioned technical problems, this utility model specifically provides the following technical solution: a novel low-load, stable-fire, high-temperature corrosion-resistant combustion device, comprising a burner housing, an auxiliary pressure reducing box located below the burner housing, and an inlet pressure chamber and an outlet pressure pipe respectively located within the auxiliary pressure reducing box. The inlet pressure chamber is connected to the outlet pressure pipe on one side below. A first baffle and a second baffle are respectively fitted around the middle of the outlet pressure pipe, and multiple triangular blocks are arranged between the first and second baffles. These multiple triangular blocks are combined and disposed within the outlet pressure pipe. One end of a baffle is inserted into one side of a second baffle and rotatably connected. A groove is provided on one side of the first baffle, and multiple strip-shaped holes are provided in the second baffle. A guide post and a slider are fixedly connected to the upper middle part of the two sides of the triangular block, respectively. The guide post is inserted into the strip-shaped hole, and the slider is inserted into the groove. A worm gear tooth surface is provided on the side of the second baffle, and a worm is engaged below the worm gear tooth surface. A rotating rod is inserted into one end of the worm, and the other end of the rotating rod passes through the auxiliary pressure reducing box and the burner housing. The end of the rotating rod is connected to the throttle.

[0005] Preferably, the auxiliary pressure reducing box has an inlet at the top center, which is connected to the inside of the burner housing, and an outlet at the center of one side, which is connected to the pressure outlet pipe.

[0006] Preferably, the pressure outlet pipe has two sections, and one end of the pressure outlet pipe is fixedly connected to the middle of the side of the first baffle, and the pressure outlet pipe is connected to the middle of the first baffle.

[0007] Preferably, the other end of the pressure outlet pipe is rotatably connected to the middle of the side of the second baffle, and the other end of the pressure outlet pipe, the second baffle, and the outlet are connected.

[0008] Preferably, a ring slot is provided on one side of the first baffle, and a groove is provided inside one end of the second baffle.

[0009] Preferably, one end of the first baffle is inserted into the groove, and a ring insert is provided on the side wall of the groove, while the ring insert is engaged in the ring slot.

[0010] Preferably, a plurality of merged triangular blocks are placed on one side of the groove, and the two sides of the triangular blocks are respectively in close contact with one end face of the first baffle and the inner sidewall of the groove.

[0011] Preferably, the burner housing is provided with AA secondary air duct, A primary air duct, AB oil secondary air duct, B primary rich air duct, BC oil secondary air duct, C primary air duct, CD secondary air duct, D primary air duct, DE oil secondary air duct, E primary air duct, EE secondary air duct, B primary lean air duct, and air outlet from bottom to top.

[0012] Compared with the prior art, this utility model has the following advantages:

[0013] This invention features an auxiliary pressure reducing chamber with an inlet chamber and an outlet pipe. The outlet pipe has a first baffle and a second baffle in its middle section. The first baffle has a slot on its side that engages with a block in the second baffle. Multiple triangular blocks are positioned between the first and second baffles, with guide posts and sliders located on the upper center of each side. The guide posts are inserted into the slots of the second baffle, and the sliders engage with the grooves on the side of the first baffle. A worm gear tooth surface is located on the side of the second baffle, meshing with a worm. This design utilizes the coordination between the internal structures of the auxiliary pressure reducing chamber to effectively reduce and stabilize the high load inside the burner casing, preventing slagging after combustion that could affect the boiler's subsequent operation. Attached Figure Description

[0014] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a side view schematic diagram of the connection between the auxiliary pressure reducing box and the burner housing of this utility model;

[0017] Figure 3 This is an enlarged schematic diagram of point A in this utility model;

[0018] Figure 4 This is a schematic diagram of the second baffle and worm gear of this utility model.

[0019] Figure 5 This is a front view schematic diagram of the first baffle and the triangular block of this utility model;

[0020] Figure 6 This is a schematic diagram showing the connection between the first baffle and the triangular block of this utility model;

[0021] Figure 7 This is a schematic diagram of the back structure of the triangular block of this utility model.

[0022] The labels in the attached diagram represent the following:

[0023] 1. Burner housing; 2. Auxiliary pressure reducing box; 201. Inlet section; 202. Outlet section; 3. Pressure inlet chamber; 4. Pressure outlet pipe; 5. First baffle; 501. Ring slot section; 502. Slide groove section; 6. Second baffle; 601. Ring insert block section; 602. Groove section; 603. Strip hole section; 7. Worm gear tooth surface; 8. Triangular block; 9. Guide column; 10. Slider; 11. Worm; 12. Rotating rod; 13. Rotary handle; 14. AA secondary air duct; 15. A primary air duct; 16. AB oil secondary air duct; 17. B primary rich air duct; 18. BC oil secondary air duct; 19. C primary air duct; 20. CD secondary air duct; 21. D primary air duct; 22. DE oil secondary air duct; 23. E primary air duct; 24. EE secondary air duct; 25. B primary lean air duct; 26. Air outlet. Detailed Implementation

[0024] 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.

[0025] Please see Figure 1-7 As shown, this utility model provides a novel low-load, stable-fire, high-temperature corrosion-resistant combustion device, including a burner housing 1. An auxiliary pressure-reducing box 2 is located below the burner housing 1, and the auxiliary pressure-reducing box 2 contains an inlet pressure chamber 3 and an outlet pressure pipe 4. The inlet pressure chamber 3 is connected to the outlet pressure pipe 4 on one side below. A first baffle 5 and a second baffle 6 are respectively fitted around the middle of the outlet pressure pipe 4, and multiple triangular blocks 8 are located between the first baffle 5 and the second baffle 6. These multiple triangular blocks 8 are combined and disposed within the outlet pressure pipe 4. One end of the first baffle 5 is inserted into one side of the second baffle 6 for rotational connection. The first baffle 5 has a groove 502 on one side, and the second baffle 6 has multiple strip holes 603. The upper middle part of the two sides of the triangular block 8 is fixedly connected to the guide post 9 and the slider 10, respectively. The guide post 9 is inserted into the strip hole 603, and the slider 10 is inserted into the groove 502. The side of the second baffle 6 has a worm gear tooth surface 7, and the worm gear tooth surface 7 meshes with the worm 11. One end of the worm 11 is inserted into the rotating rod 12, and the other end of the rotating rod 12 passes through the auxiliary pressure reducing box 2 and the burner housing 1. The end of the rotating rod 12 is connected to the handle 13.

[0026] In this embodiment, an inlet 201 is provided in the middle of the upper part of the auxiliary pressure reducing box 2, and the inlet 201 is connected to the inside of the burner housing 1. An outlet 202 is provided in the middle of one side of the auxiliary pressure reducing box 2, and the outlet 202 is connected to the pressure outlet pipe 4.

[0027] Furthermore, the pressure outlet pipe 4 is divided into two sections, and one end of the pressure outlet pipe 4 is fixedly connected to the middle of the side of the first baffle 5, and the pressure outlet pipe 4 is connected to the middle of the first baffle 5.

[0028] Furthermore, the other end of the pressure outlet pipe 4 is rotatably connected to the middle of the side of the second baffle 6, and the other end of the pressure outlet pipe 4, the second baffle 6, and the outlet 202 are connected.

[0029] The auxiliary pressure reducing chamber 2 is equipped with an inlet chamber 3 and an outlet pipe 4. The inlet chamber 3 is used to relieve the negative pressure of the burner casing 1, which can be discharged through the outlet pipe 4. The first baffle 5 and the second baffle 6 are respectively provided in the outlet pipe 4 to adjust the amount of pressure discharged inside the outlet pipe 4.

[0030] In this embodiment, a ring slot portion 501 is provided on one side of the first baffle 5, and a groove portion 602 is provided in one end of the second baffle 6.

[0031] Furthermore, one end of the first baffle 5 is inserted into the groove 602, and a ring insert 601 is provided on the side wall of the groove 602, while the ring insert 601 is engaged in the ring slot 501.

[0032] Furthermore, multiple merged triangular blocks 8 are placed on one side of the groove 602, and the two sides of the triangular blocks 8 are tightly fitted to one end face of the first baffle 5 and the inner sidewall of the groove 602, respectively.

[0033] The ring slot 501 on the side of the first baffle 5 is inserted into the ring insert 601 in the second baffle 6, so that the second baffle 6 rotates along the first baffle 5. At the same time, the multiple triangular blocks 8 between the first baffle 5 and the second baffle 6 will open or close as the second baffle 6 rotates.

[0034] In this embodiment, the burner housing 1 is provided with the following structures from bottom to top: AA secondary air duct 14, A primary air duct 15, AB oil secondary air duct 16, B primary rich air duct 17, BC oil secondary air duct 18, C primary air duct 19, CD secondary air duct 20, D primary air duct 21, DE oil secondary air duct 22, E primary air duct 23, EE secondary air duct 24, B primary lean air duct 25, and air outlet 26. These internal structures cooperate with each other to complete the internal combustion process and provide corresponding loads to the inside of the burner housing 1.

[0035] Working principle:

[0036] An auxiliary pressure reducing chamber 2 is located below the interior of the burner housing 1. The load generated inside the burner housing 1 during production enters the auxiliary pressure reducing chamber 2. The auxiliary pressure reducing chamber 2 contains an inlet pressure chamber 3 and an outlet pressure pipe 4. A first baffle 5 and a second baffle 6 are respectively installed in the middle of the outlet pressure pipe 4. The first baffle 5 has a ring slot 501 on its side that engages with the ring insert 601 in the second baffle 6, allowing the second baffle 6 to rotate relative to the first baffle 5. Multiple triangular blocks 8 are located between the first baffle 5 and the second baffle 6. Guide posts 9 and sliders 10 are respectively located in the upper middle part of both sides of the triangular blocks 8. The guide posts 9 are inserted into the strip-shaped holes 603 of the second baffle 6. The sliders 10 and the grooves on the side of the first baffle 5 are also connected. The part 502 is in cooperation with the second baffle 6. The side of the second baffle 6 is provided with a worm gear tooth surface 7, and the worm gear tooth surface 7 meshes with the worm 11. At the same time, the worm 11 connects the rotating rod 12 and the handle 13. When the handle 13 is turned, the rotating rod 12 and the worm 11 are driven to rotate, so that the second baffle 6 rotates. Then the strip hole part 603 drives the guide post 9 to move, causing the slider 10 to move in the sliding groove part 502, and the multiple triangular blocks 8 can open or close. Since the pressure pipe 4 is connected to the middle of the first baffle 5 and the second baffle 6, and the multiple triangular blocks 8 are closed at the middle of the connection between the first baffle 5 and the second baffle 6 after closing, the pressure pipe 4 can be unobstructed after the triangular blocks 8 are opened. The distance between the multiple triangular blocks 8 can be opened according to the internal load of the burner casing 1.

[0037] In addition, after multiple devices inside the burner housing 1 generate load, the load enters the pressure chamber 3 through the inlet 201 above the auxiliary pressure reducing box 2, and then enters the pressure outlet pipe 4. It can be adjusted by the first baffle 5, multiple triangular blocks 8 and the second baffle 6 provided in the middle of the pressure outlet pipe 4.

[0038] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0039] The above embodiments are merely exemplary embodiments of this application and are not intended to limit this application. The scope of protection of this application is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to this application within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of this application.

Claims

1. A novel low-load, stable-fire, high-temperature corrosion-resistant combustion device, comprising a burner housing (1), characterized in that: An auxiliary pressure reducing box (2) is provided below the burner housing (1), and an inlet pressure chamber (3) and an outlet pressure pipe (4) are respectively provided in the auxiliary pressure reducing box (2). At the same time, the inlet pressure chamber (3) is connected to the outlet pressure pipe (4) on one side. A first baffle (5) and a second baffle (6) are respectively sleeved on the middle of the outlet pressure pipe (4), and multiple triangular blocks (8) are provided between the first baffle (5) and the second baffle (6). The multiple triangular blocks (8) are combined and disposed in the outlet pressure pipe (4). One end of the first baffle (5) is inserted into the side of the second baffle (6) for rotational connection, and a sliding groove (502) is opened on one side of the first baffle (5). Meanwhile, the second baffle (6) has multiple strip-shaped holes (603). The upper middle part of the two sides of the triangular block (8) is fixedly connected to the guide post (9) and the slider (10). The guide post (9) is inserted into the strip-shaped hole (603), and the slider (10) is inserted into the groove (502). The side of the second baffle (6) is provided with a worm gear tooth surface (7), and the worm gear tooth surface (7) meshes with the worm (11) below. One end of the worm (11) is inserted into the rotating rod (12), and the other end of the rotating rod (12) passes through the auxiliary pressure reducing box (2) and the burner housing (1). The end of the rotating rod (12) is connected to the throttle (13).

2. The novel low-load, stable-fire, high-temperature corrosion-resistant combustion device according to claim 1, characterized in that: The auxiliary pressure reducing box (2) has an inlet (201) at the top center, and the inlet (201) is connected to the inside of the burner housing (1). The auxiliary pressure reducing box (2) has an outlet (202) at the center of one side, and the outlet (202) is connected to the pressure outlet pipe (4).

3. The novel low-load, stable-fire, high-temperature corrosion-resistant combustion device according to claim 2, characterized in that: The pressure outlet pipe (4) is divided into two sections, and one end of the pressure outlet pipe (4) is fixedly connected to the middle of the side of the first baffle (5), and the pressure outlet pipe (4) is connected to the middle of the first baffle (5).

4. The novel low-load stable combustion and high-temperature corrosion resistant combustion device according to claim 3, characterized in that: The other end of the pressure outlet pipe (4) is rotatably connected to the middle of the side of the second baffle (6), and the other end of the pressure outlet pipe (4), the second baffle (6), and the outlet (202) are connected.

5. The novel low-load, stable-fire, high-temperature corrosion-resistant combustion device according to claim 1, characterized in that: The first baffle (5) has a ring slot (501) on one side and the second baffle (6) has a groove (602) in one end.

6. The novel low-load, stable-fire, high-temperature corrosion-resistant combustion device according to claim 5, characterized in that: One end of the first baffle (5) is inserted into the groove (602), and a ring insert (601) is provided on the side wall of the groove (602), while the ring insert (601) is inserted into the ring slot (501).

7. The novel low-load, stable-fire, high-temperature corrosion-resistant combustion device according to claim 6, characterized in that: Multiple combined triangular blocks (8) are placed on one side of the groove (602), and the two sides of the triangular blocks (8) are tightly attached to one end face of the first baffle (5) and the inner sidewall of the groove (602).

8. The novel low-load, stable-fire, high-temperature corrosion-resistant combustion device according to claim 1, characterized in that: The burner housing (1) is provided with the following secondary air ducts from bottom to top: AA secondary air duct (14), A primary air duct (15), AB oil secondary air duct (16), B primary rich air duct (17), BC oil secondary air duct (18), C primary air duct (19), CD secondary air duct (20), D primary air duct (21), DE oil secondary air duct (22), E primary air duct (23), EE secondary air duct (24), B primary lean air duct (25), and air outlet (26).

Images