Flame detection device

Abstract

The invention relates to the technical field of flame detection, and discloses a flame detection device. A high-voltage generator is mounted in the mainframe box; a power supply device is fixedly connected to the interior of the mainframe box, a processor is fixedly connected to the interior of the mainframe box, an output device is fixedly connected to the interior of the mainframe box, and the power supply end of the high-voltage generator is connected with the output end of one side of the power supply device; a transmission mechanism for transmitting electric power; the cooling mechanism is used for cooling the detection cathode and the detection anode; the supporting mechanism is used for mounting and dismounting the cooling mechanism; and the thermal insulation mechanism is used for blocking heat. A power supply is input to a power supply after being rectified and filtered, and is output to a detection anode and a detection cathode through an anode transmission line and a cathode transmission line. When flames exist, the detection positive electrode and the detection negative electrode are mutually conducted, and when flames do not exist, the detection positive electrode is in an open circuit state. The influence of severe weather on the detection device is avoided, and the reliability of a detection result is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of flame detection, in particular to a flame detection device. Background Art

[0002] Currently, flame detection devices have become crucial equipment for ensuring safe operation in various combustion systems. Common flame detection methods include ultraviolet (UV) sensing, infrared (IR) radiation sensing, photoelectric sensing, and conductive sensing. Optical sensors are the most widely used, capturing the spectral signals emitted by the flame for detection.

[0003] However, this type of sensing method is extremely sensitive to the surrounding environment. It's subject to significant interference from external light sources, especially in direct sunlight, reflected light, or in welding environments, making false triggering a common problem. Furthermore, fog, vapor, and thick smoke can obstruct the sensing path, leading to frequent false or missed alarms. Simply put, with so many interference sources, reliability is difficult to control.

[0004] Furthermore, the detection device structure is generally not compact enough. Most cooling structures are passive, relying solely on natural convection for heat dissipation. Under high-temperature or prolonged ignition conditions, heat easily accumulates at the detection end, causing electronic component performance drift and even ablation. The lack of effective heat dissipation channels significantly compromises overall system stability.

[0005] At the installation level, traditional devices lack adaptability to working conditions. Mounting brackets lack angle adjustment, and interfaces are limited, resulting in poor on-site adaptability. Some devices even require the main housing to be removed for access or maintenance, posing a safety hazard. While some products offer assembly and disassembly capabilities, their fastening mechanisms are poorly designed, making them prone to loosening after repeated use.

[0006] Furthermore, some existing equipment lacks thermal insulation. When used near combustion areas, they lack effective thermal insulation structures, allowing heat to be transferred to the main unit, affecting the signal processing circuitry and causing misjudgments or system freezes. Even if some products incorporate thermal insulation coatings or double-layer casings, these insulation effects are difficult to maintain over extended periods. Summary of the Invention

[0007] The purpose of the present invention is to provide a flame detection device that solves the problems of low conductivity detection accuracy, complex structure replacement and short service life of existing flame detection devices in high temperature environments.

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: a flame detection device, comprising: A main box, wherein a high voltage generator is installed inside the main box; The mainframe is fixedly connected to a power supply, the mainframe is fixedly connected to a processor, the mainframe is fixedly connected to an output device, the power supply end of the high-voltage generator is connected to one side of the output end of the power supply, the power supply end of the processor is connected to the other side of the output end of the power supply, the sampling end of the processor is connected to the sampling port of the high-voltage generator, and the output end of the processor is connected to the output device; a transmission mechanism, one end of which is mounted on the output end of the high-voltage generator and is used to transmit power; A cooling mechanism, the outer wall of which is mounted on one end of the transmission mechanism and is used to cool the detection negative electrode and the detection positive electrode; A supporting mechanism, the outer wall of which is mounted on the lower surface of the cooling mechanism and is used for installing and disassembling the cooling mechanism; The thermal insulation mechanism has an inner wall mounted on the outer wall of the supporting mechanism for blocking heat.

[0009] Preferably, the detection negative electrode and the detection positive electrode are made of high-temperature resistant alloy material.

[0010] Furthermore, the detection negative electrode and the detection positive electrode are made of high-temperature resistant alloy materials and can work in a burning flame for a long time. When used in coastal areas and other corrosion-prone environments, the service life is extended.

[0011] Preferably, one end of the detection negative electrode is ring-shaped.

[0012] Furthermore, the detection area is larger, which can ensure that the flame is always in the middle of the electrode. When affected by wind, the flame can contact the electrode no matter which direction it deviates.

[0013] Preferably, the transmission mechanism includes a positive transmission line and a negative transmission line, one end of the positive transmission line is fixedly connected to the positive output end of the high voltage generator, and one end of the negative transmission line is fixedly connected to the negative output end of the high voltage generator.

[0014] Preferably, the outer walls of the positive transmission line and the negative transmission line are both rotatably connected to a rotating block, the internal threads of the two rotating blocks are connected to the detection negative electrode and the detection positive electrode, and the outer walls of the rotating blocks are threadedly connected to the first fixed block.

[0015] Furthermore, by pushing the movement of the positive transmission line and the negative transmission line to contact the detection negative electrode and the detection positive electrode, and then rotating the rotating block inside the first fixed block, and at the same time rotating on the outer wall of the detection negative electrode and the detection positive electrode, the rotating block is fixed to the first fixed block through the thread, and then the rotating block is removed from the inside of the first fixed block by rotating it in the opposite direction, so as to achieve the effect of convenient replacement.

[0016] Preferably, the cooling mechanism includes a cooling box, a cooling fan is fixedly connected to the interior of the cooling box, an outer wall of the cooling box is fixedly connected to the outer wall of the first fixed block, a cooling plate is fixedly connected to the interior of the cooling box, a fixed frame is slidably connected to the interior of the cooling box, and a filter is fixedly connected to the interior of the fixed frame.

[0017] Preferably, the interior of the cooling plate is slidably connected to the outer walls of the detection negative electrode and the detection positive electrode, and the lower surface of the cooling box is fixedly connected to a second fixing block.

[0018] Furthermore, by starting the cooling fan 8, the air is allowed to pass through the filter 303 and enter the interior of the cooling box 301, so that the air comes into contact with the cooling plate 302, the detection negative electrode 6 and the detection positive electrode 7, thereby cooling the detection negative electrode 6 and the detection positive electrode 7, thereby preventing the connection from being damaged by high temperature, and by pulling the fixed frame to slide in the cooling box, the filter is driven to move, and then the filter is taken out from the interior of the cooling box.

[0019] Preferably, the support mechanism includes a support plate, the internal sliding connection of the support plate is a cooling box, the internal sliding connection of the support plate is a second fixed block, the internal sliding connection of the support plate is a limiting plate, the lower surface of the limiting plate is fixedly connected to the fixing plate, the internal thread of the support plate is connected to a threaded rod, the internal thread of the fixing plate is connected to a fixing bolt, and the internal sliding connection of the support plate is to the outer wall of the detection negative pole and the detection positive pole.

[0020] Preferably, a fixing box is fixedly connected to the lower surface of the support plate, a limiting pin is slidably connected inside the fixing box, one end of the limiting pin is fixedly connected to a spring, and the other end of the spring is fixedly connected to the inner wall of the fixing box.

[0021] Furthermore, by fitting the support plate and the fixing plate onto the device to be tested, the fixing plate is fixed to the device by fixing bolts, and then the cooling box is driven to move the second fixing block, and the second fixing block is inserted into the interior of the support plate, and the limit pin is pushed by the spring to be inserted into the interior of the second fixing block, and then the cooling box is fixed to the support plate, and the spring is squeezed by pressing the limit pin to make the limit pin slide out of the second fixing block, and then the second fixing block is removed from the support plate, and the support plate is pulled to slide on the limit plate, and then the threaded rod is rotated to contact the limit plate, thereby achieving the effect of limiting the movement of the support plate.

[0022] Preferably, the insulation mechanism includes an insulation plate, the interior of the insulation plate is slidably connected to a limit rod, and the outer wall of the limit rod is fixedly connected to the outer wall of the support plate. In summary, the present invention includes at least one of the following beneficial technical effects: 1. The present invention uses a rectified and filtered power supply as input to a power supply unit, and outputs the power to the positive and negative detection electrodes via positive and negative transmission lines. When a flame is present, the weak conductivity of the flame causes the positive and negative detection electrodes to conduct. When a flame is absent, the positive detection electrode is disconnected. In both the conductive and disconnected operating states, the flame conductivity detection method is employed to prevent the impact of inclement weather such as wind, rain, and fog on the detection device, thereby improving the reliability of the detection results.

[0023] 2. The present invention starts the cooling fan to allow air to enter the interior of the cooling box through the filter, so that the air comes into contact with the cooling plate, the detection negative electrode and the detection positive electrode, thereby cooling the detection negative electrode and the detection positive electrode, thereby preventing the connection from being damaged by high temperature.

[0024] 3. The present invention drives the second fixed block to move by pushing the cooling box, and inserts the second fixed block into the interior of the support plate, and then moves the limit pin through the spring to insert into the interior of the second fixed block, thereby fixing the cooling box on the support plate, and pressing the limit pin to squeeze the spring, so that the limit pin slides out from the second fixed block, and then the second fixed block is taken out from the support plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A perspective view of the present invention; Figure 2 This is a schematic diagram of the interior of the main chassis of the present invention; Figure 3 It is a cross-sectional view of the rotating block of the present invention; Figure 4 It is a cross-sectional view of the cooling box of the present invention; Figure 5 Schematic diagram of the thermal insulation board of the present invention; Figure 6 is a cross-sectional view of a support plate of the present invention; Figure 7 It is a structural schematic diagram of the present invention; Figure 8 is a circuit diagram of the device of the present invention.

[0026] Among them, 1. main chassis; 2. transmission mechanism; 201. rotating block; 202. first fixed block; 203. positive transmission line; 204. negative transmission line; 3. cooling mechanism; 301. cooling box; 302. cooling plate; 303. filter; 304. second fixed block; 305. fixing frame; 4. supporting mechanism; 401. supporting plate; 402. fixing bolt; 403. fixing box; 404. spring; 405. limit pin; 406. fixing plate; 407. threaded rod; 408. limit plate; 5. thermal insulation mechanism; 501. thermal insulation plate; 502. limit rod; 6. negative electrode detection; 7. positive electrode detection; 8. cooling fan; 9. high voltage generator; 10. power supply; 11. processor; 12. output device. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1 -Attached Figure 8 , the present invention is described in further detail.

[0028] Please see the attached Figure 1 -Attached Figure 8 , the present invention provides a flame detection device, comprising; A main chassis 1, wherein a high voltage generator 9 is installed inside the main chassis 1; The main chassis 1 is fixedly connected to a power supply 10, the main chassis 1 is fixedly connected to a processor 11, the main chassis 1 is fixedly connected to an output device 12, the power supply end of the high-voltage generator 9 is connected to one side of the output end of the power supply 10, the power supply end of the processor 11 is connected to the other side of the output end of the power supply 10, the sampling end of the processor 11 is connected to the sampling port of the high-voltage generator 9, and the output end of the processor 11 is connected to the output device 12; Specifically, a 220V AC power source, after rectification and filtering, is input to power chips U3 and U4 of power supply unit 10. U3 supplies power to processing circuit MCU. The current output by U4 is inverted and boosted by the high-voltage generating circuit composed of U2 and LC2, and then output to the positive detection electrode 7HV and the negative detection electrode 6HD via positive transmission line 203 and negative transmission line 204. When a flame is present, the weak conductivity of the flame causes the positive detection electrode 7 and the negative detection electrode 6 to conduct with each other. When no flame is present, the positive detection electrode 7 is in an open circuit state. In the open and closed operating states, the current flowing through sampling element L1 of high-voltage generator 9 is different. The sampling circuit composed of chip U5 and peripheral components detects this current and outputs a signal to the MCU of processor 11. The processing circuit processes the signal and outputs the flame status signal through relay K1 of output unit 12.

[0029] Transmission mechanism 2, one end of the transmission mechanism 2 is installed at the output end of the high-voltage generator 9 for transmitting electricity; the transmission mechanism 2 includes a positive transmission line 203 and a negative transmission line 204, one end of the positive transmission line 203 is fixedly connected to the positive output end of the high-voltage generator 9, and one end of the negative transmission line 204 is fixedly connected to the negative output end of the high-voltage generator 9; the outer walls of the positive transmission line 203 and the negative transmission line 204 are both rotatably connected to a rotating block 201, the internal threads of the two rotating blocks 201 are connected to the detection negative electrode 6 and the detection positive electrode 7, and the outer wall of the rotating block 201 is threadedly connected to the first fixed block 202; Specifically, by pushing the positive transmission line 203 and the negative transmission line 204 to move and contact the detection negative electrode 6 and the detection positive electrode 7, and then rotating the rotating block 201 inside the first fixed block 202, and at the same time rotating on the outer wall of the detection negative electrode 6 and the detection positive electrode 7, the rotating block 201 is fixed to the first fixed block 202 through the thread, and then the rotating block 201 is removed from the inside of the first fixed block 202 by rotating the rotating block 201 in the opposite direction, so as to achieve the effect of convenient replacement. A cooling mechanism 3, the outer wall of the cooling mechanism 3 is installed at one end of the transmission mechanism 2, and is used to cool the detection negative electrode 6 and the detection positive electrode 7; the cooling mechanism 3 includes a cooling box 301, the interior of the cooling box 301 is fixedly connected to a cooling fan 8, the outer wall of the cooling box 301 is fixedly connected to the outer wall of the first fixed block 202, the interior of the cooling box 301 is fixedly connected to a cooling plate 302, the interior of the cooling box 301 is slidably connected to a fixing frame 305, and the interior of the fixing frame 305 is fixedly connected to a filter 303; the interior of the cooling plate 302 is slidably connected to the outer walls of the detection negative electrode 6 and the detection positive electrode 7, and the lower surface of the cooling box 301 is fixedly connected to the second fixed block 304; Specifically, by starting the cooling fan 8, the air is allowed to pass through the filter 303 and enter the interior of the cooling box 301, so that the air comes into contact with the cooling plate 302, the detection negative electrode 6 and the detection positive electrode 7, thereby cooling the detection negative electrode 6 and the detection positive electrode 7, thereby preventing the connection from being damaged by high temperature, and by pulling the fixing frame 305 to slide in the cooling box 301, the filter 303 is driven to move, and the filter 303 is taken out from the interior of the cooling box 301, thereby achieving the effect of facilitating the replacement of the filter 303.

[0030] The support mechanism 4 and the outer wall of the support mechanism 4 are installed on the lower surface of the cooling mechanism 3 for installing and disassembling the cooling mechanism 3; the support mechanism 4 includes a support plate 401, the internal sliding connection of the support plate 401 is provided with a cooling box 301, the internal sliding connection of the support plate 401 is provided with a second fixed block 304, the internal sliding connection of the support plate 401 is provided with a limit plate 408, the lower surface of the limit plate 408 is fixedly connected with a fixed plate 406, the internal thread of the support plate 401 is provided with a threaded rod 407, the internal thread of the fixed plate 406 is provided with a fixing bolt 402, and the internal sliding connection of the support plate 401 is provided with the outer wall of the detection negative electrode 6 and the detection positive electrode 7; the lower surface of the support plate 401 is fixedly connected with a fixing box 403, the internal sliding connection of the fixing box 403 is provided with a limit pin 405, one end of the limit pin 405 is fixedly connected with a spring 404, and the other end of the spring 404 is fixedly connected to the inner wall of the fixing box 403; Specifically, the support plate 401 and the fixing plate 406 are fitted onto the device to be tested, and the fixing plate 406 is fixed to the device by the fixing bolt 402. The cooling box 301 is then pushed to drive the second fixing block 304 to move, and the second fixing block 304 is inserted into the interior of the support plate 401. The limit pin 405 is pushed by the spring 404 to be inserted into the interior of the second fixing block 304, and the cooling box 301 is fixed to the support plate 401. The spring 404 is pressed to squeeze the limit pin 405, so that the limit pin 405 slides out of the second fixing block 304, and the second fixing block 304 is removed from the support plate 401. The support plate 401 is pulled to slide on the limit plate 408, and the threaded rod 407 is rotated to contact the limit plate 408, thereby achieving the effect of limiting the movement of the support plate 401.

[0031] The heat-insulating mechanism 5 has an inner wall mounted on the outer wall of the supporting mechanism 4 for blocking heat.

[0032] Specifically, by pushing the insulation plate 501 to move, the insulation plate 501 slides on the outer wall of the limiting rod 502, and then the insulation plate 501 is installed on the support plate 401, thereby achieving the effect of blocking heat.

[0033] The detection negative electrode 6 and the detection positive electrode 7 are made of high temperature resistant alloy material; Specifically, it is made of high-temperature resistant alloy material and can work in a burning flame for a long time.

[0034] One end of the detection negative electrode 6 is ring-shaped; Specifically, the ring-shaped design allows for a larger detection area, ensuring that the flame is always in the middle of the electrode. When affected by wind, the flame can contact the electrode no matter which direction it deviates.

[0035] Working principle: First, insert the detection negative electrode 6 and the detection positive electrode 7 into the support plate 401 and the cooling box 301, and push the positive transmission line 203 and the negative transmission line 204 to move, so that the positive transmission line 203 and the negative transmission line 204 are in contact with the detection negative electrode 6 and the detection positive electrode 7 respectively, and rotate the rotating block 201 to fix the detection negative electrode 6 and the detection positive electrode 7 on the negative transmission line 204 and the positive transmission line 203 respectively through the thread, and at the same time, rotate the rotating block 201 on the first fixed block 202, so that the rotating block 201 is fixed on the first fixed block 202, and the support plate 401 and the fixed plate 406 are attached to the device to be tested, and the fixed plate 406 is fixed to the device by the fixing bolt 402, and then the cooling box 301 is pushed to move the second fixed block 304, and the second fixed block 304 is inserted into the interior of the support plate 401, and pushed by the spring 404 The limiting pin 405 is inserted into the interior of the second fixed block 304, and then the cooling box 301 is fixed on the support plate 401. By pulling the support plate 401 to slide on the limiting plate 408, the height of the support plate 401 is adjusted, and then the threaded rod 407 is rotated to contact the limiting plate 408, thereby achieving the effect of limiting the movement of the support plate 401. By pushing the insulation plate 501 to move, the insulation plate 501 slides on the outer wall of the limiting rod 502, and then the insulation plate 501 is installed on the support plate 401, thereby achieving the effect of blocking heat. The AC220V power supply is rectified and filtered and input into the power supply chips U3 and U4 of the power supply 10. U3 supplies power to the processing circuit MCU. The current output by U4 is inverted and boosted by the high-voltage generating circuit composed of U2 and LC2, and then output to the detection positive electrode 7HV and the detection negative electrode 6HD through the positive transmission line 203 and the negative transmission line 204. When a flame is present, the weak conductivity of the flame causes the detection positive electrode 7 and the detection negative electrode 6 to conduct to each other. When there is no flame, the detection positive electrode 7 is in an open circuit state. In the open circuit and open circuit operating states, the current flowing through the sampling element L1 of the high-voltage generator 9 is different. The sampling circuit composed of the chip U5 and peripheral components detects this current and outputs a signal to the MCU of the processor 11. The processing circuit processes the signal and outputs the flame state signal through the relay K1 of the output device 12. By starting the cooling fan 8, air is passed through the filter 303 and into the interior of the cooling box 301, so that the air contacts the cooling plate 302, the detection negative electrode 6, and the detection positive electrode 7, thereby cooling the detection negative electrode 6 and the detection positive electrode 7, thereby preventing the connection from being damaged by high temperature. By pulling the fixing frame 305 to slide within the cooling box 301, the filter 303 is moved and then removed from the cooling box 301, thereby facilitating the replacement of the filter 303.

[0036] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A flame detection device, characterized in that: include; A main chassis (1), wherein a high voltage generator (9) is installed inside the main chassis (1); The mainframe (1) is fixedly connected to a power supply (10), the mainframe (1) is fixedly connected to a processor (11), the mainframe (1) is fixedly connected to an output device (12), the power supply end of the high-voltage generator (9) is connected to one output end of the power supply (10), the power supply end of the processor (11) is connected to the other output end of the power supply (10), the sampling end of the processor (11) is connected to the sampling port of the high-voltage generator (9), and the output end of the processor (11) is connected to the output device (12); A transmission mechanism (2), one end of the transmission mechanism (2) being mounted on an output end of a high-voltage generator (9) for transmitting electric power; A cooling mechanism (3), wherein the outer wall of the cooling mechanism (3) is mounted on one end of the transmission mechanism (2) and is used to cool the detection negative electrode (6) and the detection positive electrode (7); A support mechanism (4), wherein an outer wall of the support mechanism (4) is mounted on the lower surface of the cooling mechanism (3) and is used for installing and disassembling the cooling mechanism (3); A heat-insulating mechanism (5) is provided, wherein the inner wall of the heat-insulating mechanism (5) is mounted on the outer wall of the supporting mechanism (4) and is used to block heat.

2. The flame detection device according to claim 1, characterized in that: The detection negative electrode (6) and the detection positive electrode (7) are made of high-temperature resistant alloy material.

3. The flame detection device according to claim 1, characterized in that: One end of the detection negative electrode (6) is ring-shaped.

4. The flame detection device according to claim 1, characterized in that: The transmission mechanism (2) comprises a positive transmission line (203) and a negative transmission line (204), one end of the positive transmission line (203) being fixedly connected to the positive output end of the high-voltage generator (9), and one end of the negative transmission line (204) being fixedly connected to the negative output end of the high-voltage generator (9).

5. The flame detection device according to claim 4, characterized in that: The outer walls of the positive transmission line (203) and the negative transmission line (204) are both rotatably connected to a rotating block (201), the internal threads of the two rotating blocks (201) are connected to the detection negative electrode (6) and the detection positive electrode (7), and the outer walls of the rotating blocks (201) are threadedly connected to the first fixed block (202).

6. The flame detection device according to claim 1, characterized in that: The cooling mechanism (3) comprises a cooling box (301), a cooling fan (8) is fixedly connected to the interior of the cooling box (301), an outer wall of the cooling box (301) is fixedly connected to the outer wall of the first fixed block (202), a cooling plate (302) is fixedly connected to the interior of the cooling box (301), a fixing frame (305) is slidably connected to the interior of the cooling box (301), and a filter (303) is fixedly connected to the interior of the fixing frame (305).

7. The flame detection device according to claim 6, characterized in that: The interior of the cooling plate (302) is slidably connected to the outer walls of the detection negative electrode (6) and the detection positive electrode (7), and the lower surface of the cooling box (301) is fixedly connected to a second fixed block (304).

8. The flame detection device according to claim 1, characterized in that: The support mechanism (4) comprises a support plate (401), the interior of the support plate (401) is slidably connected to a cooling box (301), the interior of the support plate (401) is slidably connected to a second fixed block (304), the interior of the support plate (401) is slidably connected to a limiting plate (408), the lower surface of the limiting plate (408) is fixedly connected to a fixing plate (406), the interior of the support plate (401) is threadedly connected to a threaded rod (407), the interior of the fixing plate (406) is threadedly connected to a fixing bolt (402), and the interior of the support plate (401) is slidably connected to the outer walls of the detection negative electrode (6) and the detection positive electrode (7).

9. The flame detection device according to claim 8, characterized in that: A fixing box (403) is fixedly connected to the lower surface of the support plate (401), and a limiting pin (405) is slidably connected inside the fixing box (403). One end of the limiting pin (405) is fixedly connected to a spring (404), and the other end of the spring (404) is fixedly connected to the inner wall of the fixing box (403).

10. The flame detection device according to claim 1, characterized in that: The thermal insulation mechanism (5) comprises a thermal insulation plate (501), the interior of the thermal insulation plate (501) is slidably connected to a limiting rod (502), and the outer wall of the limiting rod (502) is fixedly connected to the outer wall of the support plate (401).

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