Ash deposition prevention structure of flame detector probe assembly

Abstract

The utility model discloses an ash deposition prevention structure of a flame detector probe assembly, which belongs to the technical field of flame detection, and comprises an outer guide pipe and a probe main body, a plurality of first positioning rib plates are arranged between the outer guide pipe and the probe main body, and a plurality of second positioning rib plates are arranged between the outer guide pipe and the probe main body. A plurality of spiral air guide rib plates are arranged on the inner side of the outer guide pipe, a cooling air pressurizing ring is embedded in the end, close to the lens of the probe body, of the outer guide pipe, a connecting ring is in threaded connection with the end, away from the lens of the probe body, of the outer guide pipe, and anti-skid protrusions are arranged on the outer side of the connecting ring. The flame detector probe assembly solves the problems that a large amount of dust generated by combustion of fuel in a boiler furnace can gather a large amount of dust on the surface of a lens assembly in the flame detector probe assembly, so that the light transmission rate of a lens is reduced, and visible light of combustion flame in the boiler furnace cannot be effectively conducted to a flame detector sensor; and the flame detector cannot correctly judge whether the flame of the boiler furnace exists or not.

Description

Technical Field

[0001] This utility model belongs to the field of flame detection technology, and more specifically, it relates to an anti-dust accumulation structure for a flame detector probe assembly. Background Technology

[0002] The anti-dust accumulation structure of the flame detector probe assembly is mainly used to solve the problems of decreased detection accuracy, false alarms, or malfunction caused by dust accumulation in harsh environments such as high temperature and high dust, ensuring the long-term stable operation of the flame detection system. Dust may enter the probe through gaps and adhere to the circuit board, sensor, or mechanical moving parts, causing short circuits, wear, or poor heat dissipation, thus shortening the probe's lifespan. The existing anti-dust accumulation structure of the flame detector probe assembly is fixed in the secondary air duct of the boiler burner through the rear support tube of the probe assembly. A large amount of dust generated by fuel combustion in the boiler furnace will accumulate on the surface of the lens assembly in the flame detector probe assembly, causing a decrease in the lens's light transmission rate. As a result, the visible light of the combustion flame in the boiler furnace cannot be effectively transmitted to the flame detector sensor, making it impossible for the flame detector to correctly determine the presence or absence of a flame in the boiler furnace. Therefore, an anti-dust accumulation structure for the flame detector probe assembly is proposed. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides an anti-ash accumulation structure for a flame detector probe assembly. High-pressure air is delivered to the interior of the air supply body through a threaded joint and then to the outer duct through the air supply body 8. During this process, the spiral air guide ribs cause the high-pressure air to form a cyclone, thereby cleaning the lens portion attached to the probe body. This solves the problem mentioned in the background art, where a large amount of dust generated by fuel combustion in the boiler furnace accumulates on the surface of the lens assembly in the flame detector probe assembly, causing a decrease in the lens's light transmission rate. Consequently, the visible light from the combustion flame in the boiler furnace cannot be effectively transmitted to the flame detector sensor, making it impossible for the flame detector to correctly determine the presence or absence of a flame in the boiler furnace.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an anti-dust accumulation structure for a flame detector probe assembly, comprising an outer conduit and a probe body. Multiple first positioning ribs are provided between the outer conduit and the probe body. Multiple spiral air guide ribs are provided on the inner side of the outer conduit. A cooling air pressurization ring is embedded at the lens end of the outer conduit near the probe body. A connecting ring is threadedly connected to the lens end of the outer conduit away from the probe body. An anti-slip protrusion is provided on the outer side of the connecting ring. An air supply body is threadedly connected to the outer side of the connecting ring. A threaded connector is fixed to the outside of the air supply body. Multiple second positioning ribs abut against the air supply body and the connecting ring. A sealing connector is threaded to the end of the air supply body away from the outer duct. A sealing compression sleeve is threaded to the inner side of the sealing connector. An inclined surface is provided on the side of the sealing compression sleeve near the sealing connector. An O-ring seal is abutted between the inclined surface and the sealing connector. An inner duct is provided on the inner side of the sealing compression sleeve. The inner side of the inner duct is inserted into the end of the probe body away from the lens. A bolt is threaded to the outer side of the sealing compression sleeve.

[0005] As a preferred embodiment of this utility model, the center of the probe body coincides with the center of the outer catheter.

[0006] As a preferred embodiment of this invention, the center of the air supply body coincides with the center of the probe body.

[0007] As a preferred embodiment of this utility model, the interior of the threaded joint is connected to the interior of the air supply body.

[0008] As a preferred embodiment of this utility model, one side of each of the plurality of second positioning ribs is fixedly connected to the outer side of the probe body.

[0009] As a preferred embodiment of this utility model, the center of the probe body coincides with the center of the sealing connector, the sealing compression sleeve, and the inner conduit.

[0010] As a preferred embodiment of this utility model, one end of the bolt abuts against the outer side of the inner conduit.

[0011] This utility model provides an anti-dust accumulation structure for a flame detector probe assembly, which has the following beneficial effects:

[0012] 1. The anti-ash accumulation structure of the flame detector probe assembly involves high-pressure air being delivered to the air supply body through a threaded joint and then to the outer duct. During this process, the spiral air guide ribs cause the high-pressure air to form a cyclone, thereby cleaning the lens part attached to the probe body. This solves the problem that a large amount of dust generated by fuel combustion in the boiler furnace would accumulate on the surface of the lens assembly in the flame detector probe assembly, causing a decrease in the lens's light transmission rate. Consequently, the visible light from the combustion flame in the boiler furnace could not be effectively transmitted to the flame detector sensor, making it impossible for the flame detector to correctly determine the presence or absence of a flame in the boiler furnace.

[0013] 2. The anti-ash accumulation structure of the flame detector probe assembly has an inner diameter of cooling air pressure ring smaller than that of the outer duct, which increases the airflow velocity of the lens part of the probe body. There is a certain gap between the cooling air pressure ring and the lens part of the probe body to ensure that a certain pressure vortex is formed at this position, so as to ensure that the dust from the combustion in the boiler furnace does not accumulate on the lens and prevent the accumulation of dust on the lens. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the anti-dust accumulation structure of a flame detector probe assembly according to this utility model.

[0015] Figure 2 This is a schematic diagram showing the disassembled structure of the anti-dust accumulation structure of a flame detector probe assembly according to the present invention.

[0016] Figure 3 This utility model discloses an anti-dust accumulation structure for a flame detector probe assembly. Figure 2 Enlarged diagram of point A in the diagram.

[0017] Figure 4 This utility model discloses an anti-dust accumulation structure for a flame detector probe assembly. Figure 2 Enlarged diagram of point B in the image.

[0018] In the diagram: 1. Outer duct; 2. Probe body; 3. First positioning rib; 4. Spiral air guide rib; 5. Cooling air pressurization ring; 6. Connecting ring; 7. Anti-slip protrusion; 8. Air supply body; 9. Threaded joint; 10. Second positioning rib; 11. Sealing connection body; 12. Sealing compression sleeve; 13. Inclined surface; 14. O-ring seal; 15. Inner duct; 16. Bolt. Detailed Implementation

[0019] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0020] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Please see Figures 1 to 4 This utility model provides a technical solution: an anti-dust accumulation structure for a flame detector probe assembly, comprising an outer conduit 1 and a probe body 2. Multiple first positioning ribs 3 are provided between the outer conduit 1 and the probe body 2. Multiple spiral air guide ribs 4 are provided on the inner side of the outer conduit 1. A cooling air pressurization ring 5 is embedded at the lens end of the outer conduit 1 near the probe body 2. A connecting ring 6 is threadedly connected to the lens end of the outer conduit 1 away from the probe body 2. An anti-slip protrusion 7 is provided on the outer side of the connecting ring 6. An air supply body 8 is threadedly connected to the outer side of the connecting ring 6. A threaded connector 9 is fixed to the outer side of the air supply body 8. Multiple second positioning ribs 10 abut against the air supply body 8 and the connecting ring 6. A sealing connector 11 is threadedly connected to the end of the air supply body 8 away from the outer conduit 1. A sealing compression sleeve is threadedly connected to the inner side of the sealing connector 11. 12. A bevel 13 is provided on the side of the sealing compression sleeve 12 near the sealing connector 11. An O-ring 14 abuts between the bevel 13 and the sealing connector 11. An inner guide tube 15 is provided on the inner side of the sealing compression sleeve 12. The inner side of the inner guide tube 15 is inserted and matched with the end of the probe body 2 away from the lens. A bolt 16 is threadedly connected to the outer side of the sealing compression sleeve 12. The center of the probe body 2 coincides with the center of the outer guide tube 1. The center of the air supply body 8 coincides with the center of the probe body 2. The interior of the threaded joint 9 is connected to the interior of the air supply body 8. One side of each of the multiple second positioning ribs 10 is fixedly connected to the outer side of the probe body 2. The center of the probe body 2 coincides with the center of the sealing connector 11, the sealing compression sleeve 12 and the inner guide tube 15. One end of the bolt 16 abuts against the outer side of the inner guide tube 15.

[0023] When using the anti-ash accumulation structure, it is connected to an external air pump through the threaded connector 9. High-pressure air is delivered to the inside of the air supply body 8 through the threaded connector 9, and then to the outer duct 1 through the air supply body 8. During this process, the spiral air guide rib 4 causes the high-pressure air to form a cyclone, thereby cleaning the lens part attached to the probe body 2. At the same time, the inner diameter of the cooling air pressure ring 5 is smaller than the inner diameter of the outer duct 1, which increases the airflow velocity of the lens part of the probe body 2. There is a certain gap between the cooling air pressure ring 5 and the lens part of the probe body 2 to ensure that a certain pressure vortex is formed at this position, ensuring that the dust from the combustion in the boiler furnace does not accumulate on the lens, thus preventing the accumulation of dust on the lens. Through the above process, the problem of a large amount of dust generated by fuel combustion in the boiler furnace accumulating on the surface of the lens assembly in the flame detector probe assembly is solved, which causes a decrease in the light transmission rate of the lens. As a result, the visible light of the combustion flame in the boiler furnace cannot be effectively transmitted to the flame detector sensor, making it impossible for the flame detector to correctly determine the presence or absence of a flame in the boiler furnace.

[0024] The specific usage and function of this embodiment: When installing the anti-dust accumulation structure of this utility model, the air supply body 8 and the outer duct 1 are connected by the connecting ring 6. During this process, the second positioning rib 10 is clamped between the connecting ring 6 and the air supply body 8, thereby fixing the probe body 2 in the middle of the air supply body 8 and the outer duct 1. Multiple first positioning ribs 3 are provided between the probe part on the probe body 2 and the outer duct 1, which play a limiting role, so that the center of the probe body 2 coincides with the center of the outer duct 1, and at the same time, protect the probe. The function of the main body 2 is to prevent the probe body 2 from becoming loose. Then, the air supply body 8 is threadedly connected to the sealing connector 11. The inner duct 15 is inserted into the sealing compression sleeve 12 and abutted by the bolt 16. The sealing connector 11 and the sealing compression sleeve 12 are threadedly connected. An O-ring 14 is installed between the sealing connector 11 and the sealing compression sleeve 12. The inclined surface 13 squeezes the O-ring 14 so that the O-ring 14 is tightly attached to the outside of the inner duct 15, preventing the inner duct 15 from having a gap with the sealing compression sleeve 12.

[0025] When using the anti-ash accumulation structure, it is connected to an external air pump through the threaded joint 9. High-pressure air is delivered to the inside of the air supply body 8 through the threaded joint 9, and then to the outer duct 1 through the air supply body 8. During this process, the spiral air guide rib 4 causes the high-pressure air to form an air vortex, thereby cleaning the lens part attached to the probe body 2. At the same time, the inner diameter of the cooling air pressure ring 5 is smaller than the inner diameter of the outer duct 1, which increases the airflow velocity of the lens part of the probe body 2. There is a certain gap between the cooling air pressure ring 5 and the lens part of the probe body 2 to ensure that a certain pressure vortex is formed at this position, ensuring that the dust from the combustion in the boiler furnace does not accumulate on the lens, thus preventing the occurrence of ash accumulation on the lens.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A dust-proof structure for a flame detector probe assembly, comprising an outer conduit (1) and a probe body (2), characterized in that: Multiple first positioning ribs (3) are provided between the outer conduit (1) and the probe body (2). Multiple spiral air guide ribs (4) are provided on the inner side of the outer conduit (1). A cooling air pressurization ring (5) is embedded at the lens end of the outer conduit (1) near the probe body (2). A connecting ring (6) is threadedly connected to the lens end of the outer conduit (1) away from the probe body (2). An anti-slip protrusion (7) is provided on the outer side of the connecting ring (6). An air supply body (8) is threadedly connected to the outer side of the connecting ring (6). A threaded joint (9) is fixed on the outer side of the air supply body (8). Multiple second positioning ribs abut against the air supply body (8) and the connecting ring (6). The air supply body (8) is threaded to a sealing connector (11) at one end away from the outer duct (1). A sealing compression sleeve (12) is threaded to the inner side of the sealing connector (11). An inclined surface (13) is provided on the side of the sealing compression sleeve (12) near the sealing connector (11). An O-ring (14) abuts between the inclined surface (13) and the sealing connector (11). An inner duct (15) is provided on the inner side of the sealing compression sleeve (12). The inner side of the inner duct (15) is inserted into the end of the probe body (2) away from the lens. A bolt (16) is threaded to the outer side of the sealing compression sleeve (12).

2. The anti-dust accumulation structure of a flame detector probe assembly according to claim 1, characterized in that: The center of the probe body (2) coincides with the center of the outer catheter (1).

3. The anti-dust accumulation structure of a flame detector probe assembly according to claim 1, characterized in that: The center of the air supply body (8) coincides with the center of the probe body (2).

4. The anti-dust accumulation structure of a flame detector probe assembly according to claim 1, characterized in that: The interior of the threaded joint (9) is connected to the interior of the air supply body (8).

5. The anti-dust accumulation structure of a flame detector probe assembly according to claim 1, characterized in that: One side of each of the multiple second positioning ribs (10) is fixedly connected to the outside of the probe body (2).

6. The anti-dust accumulation structure of a flame detector probe assembly according to claim 1, characterized in that: The center of the probe body (2) coincides with the center of the sealing connector (11), the sealing compression sleeve (12), and the inner conduit (15).

7. The anti-dust accumulation structure of a flame detector probe assembly according to claim 1, characterized in that: One end of the bolt (16) abuts against the outside of the inner conduit (15).

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