Safety protection type combustor

Abstract

The utility model discloses a safety protection type combustor, which relates to the technical field of combustors, and comprises two combustor side plates, an air inlet hole and a second fire row positioning plate are fixedly arranged between the opposite surfaces of the two combustor side plates, and the air inlet hole is positioned on the front side of the second fire row positioning plate. A plurality of fire rows are evenly and fixedly installed between the opposite faces of the air inlet holes and the second fire row positioning plate, an air leakage mechanism is arranged on the rear side of the second fire row positioning plate, the output ends of the tops of the multiple fire rows are connected with anti-backfire installation frames in a clamped mode, and first-stage grating plates are fixedly installed on the inner rings of the multiple anti-backfire installation frames. According to the anti-backfire burner, the anti-backfire mounting frame, the first-stage grating plate, the second-stage vortex flow guide plate and the rotational flow holes are matched with one another, so that when flames abnormally move back, the flames are cut, a flame propagation path is destroyed, a backfire path is blocked, a fire row of the burner is effectively prevented from backfire, and the use safety of the burner is improved.

Description

Technical Field

[0001] This utility model relates to the field of burner technology, specifically to a safety-protected burner. Background Technology

[0002] A burner is a high-efficiency combustion device primarily used to convert fuel into heat energy. Its core function is to ensure the complete combustion of fuel oil or gas and the efficient utilization of heat energy. A burner typically consists of multiple flame holes arranged longitudinally and wavy laterally, increasing the surface area of ​​the flame holes and the contact area with air. This design allows the air and fuel gas to mix inside the injector tube and be ignited as they pass through the flame holes. The flame can fully contact the external air on the flame hole surface, thus achieving more complete combustion. However, existing technologies have the following problems:

[0003] To prevent backfire, existing burner grilles typically use backfire prevention grilles. However, traditional backfire prevention grilles rely solely on physical gaps to block flame backfire, which can easily fail when there are pressure fluctuations or changes in the composition of the combustion gas. Although the published patent CN221403030U includes a thermocouple sensor for early warning, it does not involve an active backfire suppression structure. At the same time, the existing flameout protection devices of burner grilles have a certain delay in response, and residual combustion gas accumulates in the combustion chamber and cannot be discharged, which can easily cause detonation when reignition occurs. Utility Model Content

[0004] This invention provides a safety-protected burner to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A safety-protected burner includes two burner side plates. An air inlet and a second burner positioning plate are fixedly installed between the opposite surfaces of the two burner side plates. The air inlet is located on the front side of the second burner positioning plate. A plurality of burners are evenly fixedly installed between the air inlet and the opposite surface of the second burner positioning plate. A venting mechanism is provided on the rear side of the second burner positioning plate. A backfire prevention mounting frame is snapped onto the top output end of the plurality of burners. A primary grid plate is fixedly installed on the inner ring of each of the plurality of backfire prevention mounting frames. Inclined secondary vortex guide plates are fixedly installed on the left and right sides of the top of the primary grid plate. A plurality of swirl holes are opened on the two secondary vortex guide plates at the top of the plurality of primary grid plates.

[0007] A further improvement of the present invention is that: each of the several anti-backfire mounting frames is fixedly mounted with a mounting plate on its front side, and each of the several mounting plates is provided with a positioning bolt on its top, and each of the several mounting plates is fixedly mounted on the top of the fire vent positioning plate one using the positioning bolt.

[0008] A further improvement of the present invention is that the venting mechanism includes a venting pipe, which is located behind several burners and fixedly installed between the opposite faces of two burner side plates. Several burner connecting pipes are uniformly fixedly installed on the front side of the venting pipe, and the several burner connecting pipes are respectively fixedly connected to the rear side of several burners and pass through their inner cavities.

[0009] A further improvement of this utility model is that: an outlet pipe is fixedly installed on the rear side of the vent pipe, penetrating its inner cavity; an electric control valve is provided on the outer wall of the outlet pipe; the electric control valve includes a signal receiving module and a signal sending module; the signal receiving module is used to receive the burner flameout protection electrical signal; and an auxiliary venting mechanism is provided at the rear end of the outlet pipe.

[0010] A further improvement of this utility model is that: the auxiliary venting mechanism includes a connecting cylinder, which is connected to the exhaust pipe from front to back; an exhaust fan is fixedly installed in the inner cavity of the connecting cylinder; the exhaust fan includes a motor and a controller; and the signal sending module of the electric control valve can send an electrical signal when it is turned on to the controller of the exhaust fan and start the motor.

[0011] A further improvement of this utility model is that a protective mounting frame is fixedly installed at the rear end of the connecting cylinder, and a number of protective railings are evenly fixedly installed on the inner ring of the protective mounting frame.

[0012] A further improvement of the present invention is that the primary grid plate is made of high-temperature resistant chromium-nickel alloy, the grid gap is 1.8mm, the swirl hole diameter is 2mm, and the hole axis forms a 45-degree angle with the primary grid plate.

[0013] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0014] 1. This utility model provides a safety protection burner. Through the cooperation of the anti-backfire mounting frame, the primary grid plate, the secondary vortex guide plate, and the swirl hole, when the flame abnormally backfires, it cuts the flame, destroys the flame propagation path, and blocks the backfire path, effectively preventing backfire of the burner's flame outlet and improving the safety of the burner's use.

[0015] 2. This utility model provides a safety protection type burner, which, through the cooperation of the vent pipe, the burner connecting pipe, the gas outlet pipe, the electric control valve, and the auxiliary venting mechanism, can quickly discharge the gas generated in the burner combustion chamber due to the delay of the flameout protection device, thereby preventing gas explosion during the next reignition. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the overall inverted structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the firebox structure of this utility model;

[0018] Figure 3 This is an exploded view of the anti-tempering mounting frame of the present invention.

[0019] Figure 4 This is a schematic diagram of the venting mechanism of the present invention;

[0020] Figure 5 This is a schematic diagram of the auxiliary venting mechanism of the present invention.

[0021] In the diagram: 1. Burner side plate; 2. Flame rack positioning plate one; 3. Air inlet; 4. Flame rack; 41. Anti-backfire mounting frame; 411. Primary grille plate; 412. Secondary vortex guide plate; 413. Swirl hole; 42. Mounting plate; 43. Positioning bolt; 5. Venting mechanism; 51. Venting pipe; 52. Flame rack connecting pipe; 53. Gas outlet pipe; 54. Electrically controlled valve; 55. Auxiliary venting mechanism; 551. Connecting cylinder; 552. Exhaust fan; 553. Protective mounting frame; 554. Protective railing; 6. Flame rack positioning plate two. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] like Figure 1 , Figure 2 , Figure 3As shown, this utility model provides a safety-protected burner, including two burner side plates 1. An air inlet 3 and a second burner positioning plate 6 are fixedly installed between the opposite surfaces of the two burner side plates 1. The air inlet 3 is located on the front side of the second burner positioning plate 6. A plurality of burners 4 are evenly fixedly installed between the opposite surfaces of the air inlet 3 and the second burner positioning plate 6. A venting mechanism 5 is provided on the rear side of the second burner positioning plate 6. A backfire prevention mounting frame 41 is snapped onto the top output end of the plurality of burners 4. A primary grid plate 411 is fixedly installed on the inner ring of the plurality of backfire prevention mounting frames 41. The top left and right sides of the primary grid plate 411 are... Inclined secondary vortex guide plates 412 are fixedly installed on each of the primary grid plates 411. Each of the two secondary vortex guide plates 412 at the top of the primary grid plates 411 has several swirl holes 413. Mounting plates 42 are fixedly installed on the front side of each of the anti-backfire mounting frames 41. Each of the mounting plates 42 has a positioning bolt 43 on its top. Each of the mounting plates 42 is fixedly installed on the top of the fire rack positioning plate 2 using the positioning bolt 43. The primary grid plates 411 are made of high-temperature resistant chromium-nickel alloy with a grid gap of 1.8 mm and a swirl hole 413 diameter of 2 mm. The hole axis forms a 45-degree angle with the primary grid plate 411.

[0024] In use, the gas pipeline connects to several burners 4 through the air inlet 3, allowing the gas to enter the inner cavity of the burner 4 and be ignited after being ejected through the anti-backfire mounting frame 41. When the flame abnormally backfires, the primary grid plate 411 in the inner cavity of the anti-backfire mounting frame 41 will cut the flame first. After the flame that has not been completely extinguished comes into contact with the secondary vortex guide plate 412, the vortex hole 413 guides the airflow to form a local vortex, which disrupts the flame propagation path. At the same time, the inclined plate guides the high-temperature airflow to diffuse upward, blocking the backfire path, actively disrupting the flame stability, and improving the backfire blocking rate. At the same time, when the primary grid plate 411 with small gaps is blocked, the mounting plate 42 and the entire anti-backfire mounting frame 41 can be quickly removed from the top of the burner 4 by removing the positioning bolts 43, which makes it convenient to clean the primary grid plate 411.

[0025] like Figure 4As shown, the venting mechanism 5 includes a venting pipe 51, which is located behind several burners 4 and fixedly installed between the opposite faces of two burner side plates 1. Several burner connecting pipes 52 are evenly fixedly installed on the front side of the venting pipe 51. The several burner connecting pipes 52 are respectively fixedly connected to the rear side of several burners 4 and pass through their inner cavity. An exhaust pipe 53 that passes through its inner cavity is fixedly installed on the rear side of the venting pipe 51. An electric control valve 54 is provided on the outer wall of the exhaust pipe 53. The electric control valve 54 includes a signal receiving module and a signal sending module. The signal receiving module is used to receive the burner flameout protection electrical signal. An auxiliary venting mechanism 55 is provided at the rear end of the exhaust pipe 53. Both the venting pipe 51 and the exhaust pipe 53 are made of heat-resistant ceramic integral sintering, which is more resistant to high temperature. The electric control valve 54 is selected from existing models that are resistant to high temperature and can be electrically controlled. It is sufficient to have high temperature resistance and the ability to receive signals to start and stop. It is existing technology and will not be described in detail here.

[0026] When the existing burner triggers the flameout protection, the electronically controlled valve 54 on the outer wall of the gas outlet pipe 53 can be opened synchronously by sending a signal. This allows the gas in the inner chambers of several burners 4 to enter the inner chamber of the vent pipe 51 through the burner connecting pipe 52 and then enter the gas outlet pipe 53. After the flameout protection device ends the protection state, it can synchronously control the electronically controlled valve 54 to close, so as not to affect the gas discharge of the burner 4.

[0027] like Figure 5 As shown, the auxiliary venting mechanism 55 includes a connecting cylinder 551, which is connected to the air outlet pipe 53. An exhaust fan 552 is fixedly installed in the inner cavity of the connecting cylinder 551. The exhaust fan 552 includes a motor and a controller. The signal sending module of the electric control valve 54 can send an electrical signal when it is turned on to the controller of the exhaust fan 552 and start the motor. A protective mounting frame 553 is fixedly installed at the rear end of the connecting cylinder 551. Several protective railings 554 are evenly fixedly installed on the inner ring of the protective mounting frame 553.

[0028] When the electric control valve 54 is started, the exhaust fan 552 inside the connecting cylinder 551 can be started simultaneously. The exhaust fan 552 can quickly discharge the gas in the cavity of the outlet pipe 53 to the rear through the protective railing 554 of the inner ring of the protective mounting frame 553. It can also be connected to the rear end of the connecting cylinder 551 through a pipeline to discharge the gas to the outside, which is safer. The protective railing 554 can effectively prevent foreign objects from entering the connecting cylinder 551 and causing blockage when the exhaust fan 552 is not in use.

[0029] The working principle of this safety-protected burner will be explained in detail below.

[0030] like Figure 1-5As shown, during use, the gas pipeline connects to several burners 4 through the air inlet 3, allowing the gas to enter the inner cavity of the burner 4 and be ignited after being ejected through the anti-backfire mounting frame 41. When the flame abnormally flashes back, the primary grille plate 411 inside the anti-backfire mounting frame 41 will first cut the flame. After the unextinguished flame comes into contact with the secondary vortex guide plate 412, the vortex hole 413 guides the airflow to form a local vortex, disrupting the flame propagation path. At the same time, the inclined plate guides the high-temperature airflow to diffuse upward, blocking the backfire path, actively disrupting flame stability, and improving the backfire blocking rate. Meanwhile, when the primary grille plate 411 with small gaps becomes blocked, the mounting plate 42 and the entire anti-backfire mounting frame 41 can be quickly removed from the top of the burner 4 by removing the positioning bolts 43, thus facilitating the cleaning of the primary grille plate 411. At the same time, when the existing burner is burning... When the burner triggers the flameout protection, the electronically controlled valve 54 on the outer wall of the gas outlet pipe 53 can be opened synchronously by sending a signal. This allows the gas in the inner chambers of several burners 4 to enter the inner chamber of the vent pipe 51 through the burner connecting pipe 52 and then into the gas outlet pipe 53. When the electronically controlled valve 54 is activated, the exhaust fan 552 in the inner chamber of the connecting cylinder 551 can be activated simultaneously. The exhaust fan 552 can quickly discharge the gas in the inner chamber of the gas outlet pipe 53 through the protective railing 554 on the inner ring of the protective mounting frame 553. The gas can also be discharged outdoors through a pipeline connected to the rear end of the connecting cylinder 551, which is safer. The protective railing 554 can effectively prevent foreign objects from entering the connecting cylinder 551 and causing blockage when the exhaust fan 552 is not in use. After the flameout protection device ends the protection state, the electronically controlled valve 54 can be closed synchronously, so as not to affect the gas discharge of the burners 4.

[0031] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A safety-protected burner, comprising two burner side plates (1), characterized in that: An air inlet (3) and a second burner positioning plate (6) are fixedly installed between the opposite surfaces of the two burner side plates (1). The air inlet (3) is located on the front side of the second burner positioning plate (6). Several burners (4) are evenly fixedly installed between the opposite surfaces of the air inlet (3) and the second burner positioning plate (6). A venting mechanism (5) is provided on the rear side of the second burner positioning plate (6). A backfire prevention mounting frame (41) is snapped onto the top output end of several burners (4). A primary grid plate (411) is fixedly installed on the inner ring of several backfire prevention mounting frames (41). Inclined secondary vortex guide plates (412) are fixedly installed on the top left and right sides of the primary grid plate (411). Several swirl holes (413) are opened on the two secondary vortex guide plates (412) at the top of several primary grid plates (411).

2. The safety-protected burner according to claim 1, characterized in that: A mounting plate (42) is fixedly installed on the front side of each of the aforementioned backfire prevention mounting frames (41), and a positioning bolt (43) is provided on the top of each of the aforementioned mounting plates (42). The aforementioned mounting plates (42) are fixedly installed on the top of the fire vent positioning plate (2) using the positioning bolt (43).

3. A safety-protected burner according to claim 1, characterized in that: The venting mechanism (5) includes a venting pipe (51), which is located behind several burners (4) and fixedly installed between the opposite sides of two burner side plates (1). Several burner connecting pipes (52) are evenly fixedly installed on the front side of the venting pipe (51). The several burner connecting pipes (52) are respectively fixedly connected to the rear side of several burners (4) and pass through their inner cavity.

4. A safety-protected burner according to claim 3, characterized in that: An exhaust pipe (53) is fixedly installed on the rear side of the exhaust pipe (51) and passes through its inner cavity. An electric control valve (54) is provided on the outer wall of the exhaust pipe (53). The electric control valve (54) includes a signal receiving module and a signal sending module. The signal receiving module is used to receive the burner flameout protection electrical signal. An auxiliary exhaust mechanism (55) is provided at the rear end of the exhaust pipe (53).

5. A safety-protected burner according to claim 4, characterized in that: The auxiliary venting mechanism (55) includes a connecting cylinder (551), which is connected to the air outlet pipe (53) from front to back. An exhaust fan (552) is fixedly installed in the inner cavity of the connecting cylinder (551). The exhaust fan (552) includes a motor and a controller. The signal sending module of the electric control valve (54) can send an electrical signal when it is turned on to the controller of the exhaust fan (552) and start the motor.

6. A safety-protected burner according to claim 5, characterized in that: A protective mounting frame (553) is fixedly installed at the rear end of the connecting cylinder (551), and a number of protective railings (554) are evenly fixedly installed on the inner ring of the protective mounting frame (553).

7. A safety-protected burner according to claim 1, characterized in that: The primary grid plate (411) is made of high-temperature resistant chromium-nickel alloy with a grid gap of 1.8 mm. The swirl hole (413) has a diameter of 2 mm and the hole axis forms a 45-degree angle with the primary grid plate (411).

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