A processor protection device based on flame detection technology

Abstract

This utility model discloses a processor protection device based on flame detection technology, belonging to the field of flame detector technology. The technical solution adopted by this utility model is a processor protection device based on flame detection technology, comprising a split-type signal receiving component, a signal transmission component, and a signal processing component. The two ends of the signal transmission component are electrically connected to the signal receiving component and the signal processing component, respectively. The signal receiving component includes a detector housing, with probes and a first connector for connecting to the signal transmission component at both ends. This utility model, through its split-type design combined with the L-shaped first connector, forms a physical isolation barrier, preventing sulfuric acid vapors from entering the signal processing component along the connection points, thereby reducing the risk of circuit corrosion, decreasing the frequency of false alarms, and significantly improving the long-term operational stability of the equipment in a low-NOx combustion environment.

Description

Technical Field

[0001] This utility model belongs to the field of flame detector technology, specifically relating to a processor protection device based on flame detection technology. Background Technology

[0002] Low-NOx combustion technology effectively reduces nitrogen oxide emissions by recirculating combustion exhaust gases back to the burner for secondary combustion. However, the combustion of fuels with high hydrogen content, such as coke oven gas, produces a large amount of sulfuric acid-containing water vapor. Traditional integrated flame detectors have significant drawbacks: acidic vapors easily penetrate the detector from the detection end, causing corrosion of internal circuit components. This corrosion not only causes abnormal signal transmission and false alarms but also significantly shortens the detector's lifespan. In particular, vapor condensation easily forms at the detector joints, exacerbating the risk of short circuits. Existing technologies lack effective protective structures against acidic environments, making it difficult to meet the requirements for long-term stable monitoring of low-NOx burners. Therefore, existing technologies urgently need improvement to address these issues. Utility Model Content

[0003] This invention provides a processor protection device based on flame detection technology to solve at least one of the above-mentioned technical problems.

[0004] The technical solution adopted in this utility model is as follows: A processor protection device based on flame detection technology includes a split-design signal receiving component, a signal transmission component, and a signal processing component. The two ends of the signal transmission component are electrically connected to the signal receiving component and the signal processing component, respectively. The signal receiving component includes a detector housing. The two ends of the detector housing are respectively provided with a probe and a first connector for connecting the signal transmission component. The first connector is L-shaped so that the end of the first connector is perpendicular to the detector housing and upward.

[0005] Furthermore, this application also proposes that the signal transmission component includes a signal transmission cable, both ends of which are provided with plugs, and the end of the first connector is provided with a first slot that mates with the plug, and the first slot and the plug are connected by an interference fit.

[0006] Furthermore, this application also proposes that the signal processing component includes a signal processor, the end of which is provided with a second slot that mates with the plug, and the second slot is connected to the plug by an interference fit.

[0007] Furthermore, this application also proposes that the outer wall of the first connector is provided with a heat dissipation groove structure.

[0008] Furthermore, this application also proposes that the plug is an explosion-proof plug.

[0009] Furthermore, this application also proposes that the signal processor is positioned above the first connector.

[0010] Furthermore, this application also proposes that the detector housing sidewall is provided with a mounting plate, and the mounting plate is provided with a plurality of slots.

[0011] Due to the adoption of the above technical solution, the beneficial effects achieved by this utility model are as follows: 1. This solution isolates sensitive electronic components within independent chambers using a split structure. The L-shaped connector's directional design alters the vapor conduction characteristics of traditional straight connectors, utilizing the weight of the condensate to create a liquid seal effect. In existing technologies, when connectors are horizontally arranged, vapor can diffuse along the inner wall via capillary action. In this solution, the vertically upward-facing connector end prevents liquid from rising against gravity, effectively preventing acidic vapors from intruding into the signal processing area and avoiding signal distortion and equipment damage caused by corrosion of electrical components. The split structure reduces thermal conduction interference between components, improving signal transmission stability. The physical barrier effect of the L-shaped connector, working in conjunction with the split layout, significantly extends the detector's lifespan in high-temperature, high-humidity, and corrosive gas environments.

[0012] 2. This solution eliminates the gap at the insertion interface through an interference fit, resulting in a superior sealing effect compared to conventional O-ring seals, without requiring additional sealing components. This application effectively prevents acidic vapors from combustion exhaust from entering the detector's interior through the signal transmission components, avoiding increased contact resistance at the plug-slot contact surface due to corrosion, thereby maintaining signal transmission stability and extending the service life of electrical components.

[0013] 3. This solution eliminates connection gaps through interference fit. Even with mechanical vibration or temperature changes, the plug and the second slot can maintain a tight contact, effectively preventing acidic vapors from seeping into the internal circuit through the signal processor connection. This avoids signal distortion caused by oxidation of metal contacts, reduces the probability of false alarms caused by poor contact, and significantly extends the service life of the signal processing module in corrosive environments.

[0014] 4. The external heat dissipation tank structure actively reduces the operating temperature of the connector, while the channel guides the condensate, reducing the risk of acidic substances corroding the connection parts. This effectively reduces the operating temperature of the first connector in high temperature and high humidity environments, slows down the deformation of metal parts caused by thermal stress, and extends the stability of the connection between the connector and the slot. At the same time, it reduces the residence time of acidic condensate on the connector surface, preventing liquid from seeping into the slot and causing short circuits, thus improving the durability of the signal transmission components.

[0015] 5. This solution forms a unidirectional flow path by utilizing the spatial height difference, fundamentally cutting off the possibility of reverse liquid permeation. It effectively blocks the path of acidic condensate entering the signal processor through the signal transmission components, avoiding circuit board corrosion and short circuit failures, and significantly improving the operational stability of the flame detector in sulfur-containing flue gas environments. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of a specific embodiment of the present utility model; Figure 2 This is a front view of a specific embodiment of the present utility model.

[0017] The accompanying drawings, which are provided to further illustrate the present invention and constitute a part of the present invention, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present invention.

[0018] In the attached diagram: 1. Detector housing; 11. Probe; 12. Mounting plate; 2. First connector; 21. First slot; 3. Signal transmission cable; 31. Plug; 4. Signal processor; 41. Second slot. Detailed Implementation

[0019] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0020] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0021] Furthermore, it should be understood in the description of this utility model that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "implementation," "example," "aspect," or "specific example" 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 this 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.

[0024] Reference Figures 1 to 2 A processor protection device based on flame detection technology includes a split-design signal receiving component, a signal transmission component, and a signal processing component. The two ends of the signal transmission component are electrically connected to the signal receiving component and the signal processing component, respectively. The signal receiving component includes a detector housing 1. The detector housing 1 has a probe 11 and a first connector 2 for connecting the signal transmission component at both ends. The first connector 2 is L-shaped so that the end of the first connector 2 is perpendicular to the detector housing 1 and upward.

[0025] The split-type design refers to the signal receiving component, signal transmission component, and signal processing component being independent modules connected in a detachable manner. Specifically, standardized interfaces can be used to achieve physical separation between the components. This design prevents acidic vapors from forming a continuous permeation channel between the components. The L-shaped connector refers to the connecting component being bent at a right angle, and can be made of cast metal or injection molded engineering plastic. Its vertically upward layout at the end prevents the condensate from flowing upwards along the inner wall of the connector due to gravity, thus blocking the migration path of the vapor to the signal processing component. The detector housing 1 is the protective structure enclosing the probe 11 and the front-end circuitry, and can be made of stainless steel or a corrosion-resistant alloy. The sealed connection between the housing and the probe 11 prevents external vapors from directly intruding into the housing.

[0026] Specifically, after the signal receiving component acquires the flame light signal through the probe 11, it undergoes preliminary processing by the internal circuitry of the housing before connecting to the signal transmission component via an L-shaped connector. Because the vertical section of the L-shaped connector forms a physical barrier, the acidic vapors generated during combustion condense at the probe 11 end and flow downwards along the housing surface, preventing them from entering the vertically upward-facing connector. The signal transmission component only transmits electrical signals and does not create a gas passage, thus isolating the signal processing component outside the vapor-affected area. The mounting plate 12, located on the side wall of the detector housing 1, is fixed to the outer wall of the burner through slots, ensuring a safe distance between the probe 11 and the combustion zone.

[0027] Compared to existing technologies, traditional integrated detectors suffer from long-distance vapor permeation due to their internal interconnected structure. This solution, however, isolates sensitive electronic components within independent chambers using a split structure. The L-shaped connector's directional design alters the vapor conduction characteristics of traditional straight connectors, utilizing the condensate's own weight to create a liquid seal effect. In existing technologies, when connectors are horizontally arranged, vapor can diffuse along the inner wall via capillary action. In this solution, the vertically upward-facing connector end prevents liquid from rising against gravity.

[0028] Through the above technical solution, this application effectively prevents acidic vapors from entering the signal processing area, avoiding signal distortion and equipment damage caused by corrosion of electrical components. The split structure reduces thermal conduction interference between components and improves signal transmission stability. The physical barrier effect of the L-shaped connector works in conjunction with the split layout to significantly extend the service life of the detector in high-temperature, high-humidity, and corrosive gas environments.

[0029] As a specific implementation of the signal transmission component, refer to Figure 1 and Figure 2 The signal transmission component includes a signal transmission cable 3, with plugs 31 at both ends. A first connector 2 has a first slot 21 at its end that mates with the plug 31. The first slot 21 and the plug 31 are connected by an interference fit. The plug 31 is a contact component used to establish an electrical connection, and can be made of silver-plated copper alloy with a plating thickness of 0.2-0.5 micrometers to enhance conductivity and oxidation resistance. The first slot 21 is a groove structure that matches the plug 31, and can be made of a flexible copper sheet with a thickness of 0.1-0.3 mm to provide sufficient clamping force. An interference fit means that the outer diameter of the plug 31 is slightly larger than the inner diameter of the slot. Specifically, a tolerance grade of H7 / p6 can be used; for example, if the diameter of the plug 31 is 5.0 mm, the inner diameter of the slot is 4.98 mm, resulting in an interference of 0.02 mm.

[0030] Specifically, when the plugs 31 at both ends of the signal transmission cable 3 are pressed into the first slots 21 at the end of the first connector 2, the interference fit between the plugs 31 and the slot generates radial pressure, causing the outer wall of the plug 31 to fit tightly against the inner wall of the slot. This mechanical pressure not only achieves a stable electrical connection but also forms a physical sealing barrier, preventing external acidic vapors from penetrating along the insertion interface. During assembly, the contact surfaces of the plugs 31 and the slots can be coated with a silicone-based waterproofing medium to aid in sealing.

[0031] This solution eliminates the gap at the insertion interface through an interference fit, resulting in a superior sealing effect compared to conventional O-ring seals, without requiring additional sealing components. This application effectively prevents acidic vapors from combustion exhaust from entering the detector through the signal transmission components, avoiding increased contact resistance due to corrosion at the contact surface between the plug 31 and the slot, thereby maintaining signal transmission stability and extending the service life of electrical components.

[0032] As a specific implementation of the signal processing component, refer to Figures 1-2 The signal processing component includes a signal processor 4, and the end of the signal processor 4 is provided with a second slot 41 that mates with the plug 31. The second slot 41 and the plug 31 are connected by an interference fit.

[0033] Signal processor 4 refers to an electronic device used to receive and process flame signals. It can be implemented using a metal housing structure with an integrated circuit board, internally integrating a signal amplification module and a logic analysis module. The second slot 41 refers to the interface structure located at the end of signal processor 4, which can be implemented using an embedded groove made of copper alloy. The inner wall of the groove is provided with elastic contact pieces to form a conductive path. The interference fit refers to a mechanical connection method where the outer diameter of the plug 31 is slightly larger than the inner diameter of the slot. This can be achieved using a fit dimension with a tolerance grade of H7 / p6, generating radial clamping force through the elastic deformation of the metal material.

[0034] Specifically, the signal processor 4 is physically connected to the plug 31 of the signal transmission cable 3 via the second slot 41 at its end. When the plug 31 is inserted into the second slot 41, the friction generated by the interference fit prevents axial displacement at the connection point, while the elastic contact piece and the surface of the plug 31 form a continuous conductive surface. This connection method requires no additional fasteners and can maintain stable electrical conductivity even in high-temperature and vibration environments. The housing of the signal processor 4 adopts a fully sealed structure, which, together with the interference fit interface of the second slot 41, forms a double anti-permeability barrier.

[0035] Compared with existing technologies, traditional flame detectors' signal processors 4 often use threaded connections or gap-fit ​​plug-in methods. These connections are prone to gaps due to thermal expansion and contraction, allowing acidic vapors to enter the processor through the gap between the plug 31 and the slot. This solution eliminates these gaps through an interference fit, ensuring a tight contact between the plug 31 and the second slot 41 even under mechanical vibration or temperature changes.

[0036] Through the above technical solution, this application effectively prevents acidic vapor from seeping into the internal circuit through the connection part of the signal processor 4, avoids signal distortion caused by oxidation of metal contacts, reduces the probability of false alarms caused by poor contact, and significantly extends the service life of the signal processing module in corrosive environments.

[0037] As a preferred embodiment of the first connector 2, refer to Figure 1 and Figure 2 The outer wall of the first connector 2 is provided with a heat dissipation groove structure. The heat dissipation groove structure refers to the grooves or channels distributed circumferentially or axially along the outer wall of the connector. It can be implemented by milling or die casting, and promotes the diffusion of heat to the surrounding environment by increasing the heat dissipation surface area. The outer wall refers to the surface area of ​​the first connector 2 exposed to the external environment. It can be formed by processing metal material. The groove structure guides the condensate to flow along the grooves to avoid accumulation.

[0038] Specifically, the heat dissipation groove structure is distributed along the outer wall surface of the first connector 2. When the flame detector is in a high-temperature operating environment, the heat generated inside the connector is conducted to the outer wall through the metal material. The heat dissipation groove structure accelerates heat dissipation by increasing the contact area between the outer wall and the air. At the same time, droplets formed by the condensation of acidic vapor on the connector surface can flow downwards along the groove, avoiding stagnation at the connection between the connector and the slot. For example, the depth and width of the groove can be adjusted according to the connector size to ensure a balance between heat dissipation efficiency and anti-liquid accumulation function.

[0039] This solution actively reduces the operating temperature of the connector through an external heat dissipation tank structure. At the same time, it uses the channel to guide condensate, reducing the risk of acidic substances corroding the connection parts. This effectively reduces the operating temperature of the first connector 2 in high temperature and high humidity environments, slows down the deformation of metal components caused by thermal stress, and extends the stability of the connection between the connector and the slot. It also reduces the residence time of acidic condensate on the connector surface, preventing liquid from seeping into the slot and causing short circuits, thus improving the durability of the signal transmission components.

[0040] Preferably, the plug 31 is an explosion-proof plug 31. The explosion-proof plug 31 is a sealed connector capable of blocking electrical sparks. Specifically, it can be achieved by encasing the contact parts in a metal shell and filling them with an explosion-proof medium, with multiple layers of insulation inside. The sealed structure of the explosion-proof plug 31 can prevent external corrosive gases from penetrating into the connection area, while eliminating the risk of electrical sparks generated during insertion and removal igniting flammable gases.

[0041] The plugs 31 at both ends of the signal transmission cable 3 adopt a fully enclosed explosion-proof structure. When the plug 31 is connected to the first slot 21 and the second slot 41, the annular sealing ring on the outer wall of the plug 31 is deformed under pressure to form an airtight interface. The conductive terminals inside the plug 31 are wrapped with ceramic insulators, and the terminal spacing is designed to exceed the gas breakdown distance. The outer shell of the plug 31 is made of 316L stainless steel and the surface is anodized to enhance corrosion resistance.

[0042] Compared to existing technologies, the signal plug 31 of a conventional flame detector lacks an explosion-proof structure. When plugged in or unplugged in an environment containing hydrogen, it is prone to generating electrical sparks, posing a safety hazard of igniting an explosive gas mixture. Furthermore, the ordinary plug 31 lacks a sealing design, allowing acidic vapors to easily penetrate along the joint gaps, leading to corrosion of the metal contacts.

[0043] Through the above technical solution, this application effectively eliminates the source of electric sparks at the connector, blocks the penetration path of acidic vapor through the plug interface, enables the flame detector to reach the Exd IICT6 standard in hydrogen-containing flammable environments, and extends the corrosion resistance life of the plug 31 connection to more than 3 times that of ordinary products.

[0044] As a preferred embodiment of this application, refer to Figure 1 and Figure 2 The signal processor 4 is positioned higher than the first connector 2. The signal processor 4 is fixedly installed in the upper part of the inner wall of the burner housing, while the first connector 2 is located at the end of the detector housing 1 and extends to the bottom of the housing. When acidic vapors generated during combustion condense on the surface of the signal transmission cable 3, liquid water flows downwards along the transmission cable to the first connector 2 under gravity and is discharged through the heat dissipation grooves on the outside of the connector. Because the signal processor 4 is positioned high, the condensate cannot flow backwards along the transmission cable into the processor.

[0045] This solution creates a unidirectional flow path by utilizing the spatial height difference, fundamentally cutting off the possibility of reverse liquid permeation. It effectively blocks the path of acidic condensate entering the signal processor 4 through the signal transmission component, avoiding circuit board corrosion and short circuit failures, and significantly improving the operational stability of the flame detector in sulfur-containing flue gas environments.

[0046] Preferably, the detector housing 1 has a mounting plate 12 on its side wall, and the mounting plate 12 has several slots. The mounting plate forms an adjustable connection with the external support frame through the slots. When the flame detector needs to be fixed at different positions on the burner, the bolts can be moved along the length of the slots to match the bolt hole spacing of the support frame. The vertical connection between the mounting plate 12 and the side wall of the detector housing 1 ensures that the center of gravity of the flame detector is close to the side wall of the burner, avoiding vibration displacement caused by the cantilever structure. The edges of the slots are chamfered to form a smooth transition surface, preventing metal debris residue during installation. This solution, through the independently set mounting plate 12 and the adjustable slot structure, allows the flame detector to adapt to support surfaces at different angles inside the burner, while avoiding the problem of thermal deformation of the housing caused by welding. It enables rapid installation of the flame detector at multiple points inside the burner and effectively disperses the vibration load during equipment operation. The airflow gap formed by the slot structure accelerates the dissipation of acidic vapors, prevents condensate from accumulating on the surface of the mounting plate 12, and extends the service life of the internal circuit components of the detector.

[0047] For any parts not mentioned in this utility model, existing technologies can be used or referenced.

[0048] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0049] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A processor protection device based on flame detection technology, characterized in that, The device includes a split-type signal receiving component, a signal transmission component, and a signal processing component. The two ends of the signal transmission component are electrically connected to the signal receiving component and the signal processing component, respectively. The signal receiving component includes a detector housing (1). The two ends of the detector housing (1) are respectively provided with a probe (11) and a first connector (2) for connecting the signal transmission component. The first connector (2) is L-shaped so that the end of the first connector (2) is set upward perpendicular to the detector housing (1).

2. The processor protection device based on flame detection technology according to claim 1, characterized in that, The signal transmission component includes a signal transmission cable (3), both ends of which are provided with plugs (31). The first connector (2) is provided with a first slot (21) that mates with the plug (31) at its end. The first slot (21) and the plug (31) are connected by an interference fit.

3. A processor protection device based on flame detection technology according to claim 2, characterized in that, The signal processing component includes a signal processor (4), and the end of the signal processor (4) is provided with a second slot (41) that mates with the plug (31). The second slot (41) and the plug (31) are connected by an interference fit.

4. A processor protection device based on flame detection technology according to claim 1, characterized in that, The outer wall of the first connector (2) is provided with a heat dissipation groove structure.

5. A processor protection device based on flame detection technology according to claim 3, characterized in that, The plug (31) is an explosion-proof plug.

6. A processor protection device based on flame detection technology according to claim 3, characterized in that, The signal processor (4) is positioned above the first connector (2).

7. A processor protection device based on flame detection technology according to any one of claims 1-6, characterized in that, The detector housing (1) has a mounting plate (12) on its side wall, and the mounting plate (12) has several slots.

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