An auxiliary fire suppression system for alternative fuel delivery equipment

Abstract

This invention discloses an auxiliary fire suppression system for an alternative fuel delivery equipment, comprising a fire detection device and a fire suppression device, which are installed at the head and tail of the delivery equipment. The fire detection device is used to monitor whether a fire has occurred and includes video surveillance, a flame detector, and a temperature sensor. The fire suppression device is used to extinguish on-site fires and includes a control valve and open nozzles. The auxiliary fire suppression system for the alternative fuel delivery equipment also includes a control system, which is electrically connected to the fire detection device and controls the alarm device or the fire suppression device to operate based on the monitoring results of the fire detection device. This auxiliary fire suppression system for the alternative fuel delivery equipment reduces the chance of false alarms by incorporating multiple sensors, and the control system also has different response methods for fire alarm signals.

Description

Technical Field

[0001] This invention relates to the field of fire extinguishing, and more specifically, to an auxiliary fire extinguishing system for an alternative fuel delivery device. Background Technology

[0002] RDF solid waste is a good source of renewable energy. In terms of calorific value, every 2 tons of RDF waste can replace nearly 1 ton of standard coal. The cement industry is a major consumer of coal resources and is one of the key industries for energy conservation and emission reduction in my country. Utilizing RDF solid waste in cement kilns can reduce coal consumption and NOx emissions, and is an effective way to promote "low-carbon, environmentally friendly, and emission-reduced" cement production.

[0003] In cement production, the transportation of flammable materials such as alternative fuels is a critical step. These flammable materials are transported within the plant using various conveying equipment, such as belt conveyors, bucket elevators, and tubular belt conveyors. However, due to the flammability of these materials, the conveying equipment poses a fire risk during operation, thus requiring the installation of effective fire suppression systems to ensure production safety.

[0004] Currently, fire suppression systems used in cement plants mainly rely on traditional fire detection technologies and extinguishing devices. While these systems provide a certain level of safety, they also have some significant shortcomings. In particular, the high false alarm rate causes considerable disruption to normal plant production.

[0005] False alarms typically occur when fire detectors misinterpret signals other than fire signals. For example, conveyor equipment may generate high temperatures, steam, dust, or other disturbances during operation. These factors can easily be mistaken by temperature sensors as fire signals, triggering the fire suppression system. False alarms not only lead to unnecessary fire suppression operations but also disrupt production processes, increasing equipment downtime and maintenance costs. Furthermore, frequent false alarms can reduce staff trust in the fire suppression system and may even cause staff to ignore alarm signals when a real fire occurs, thus delaying fire suppression efforts and increasing fire damage.

[0006] Besides false alarms, existing fire suppression systems have other shortcomings. For example, some systems are not designed flexibly enough to accurately extinguish fires at critical points on different conveying equipment; some fire suppression devices are complex to operate, making it difficult for on-site personnel to operate them quickly and intuitively; and some systems may cause secondary damage to conveying equipment during the fire suppression process, further affecting production recovery. Summary of the Invention

[0007] The purpose of this invention is to provide an auxiliary fire extinguishing system for alternative fuel delivery equipment. This system reduces the chance of false alarms by setting up multiple sensors, and the control system also has different response methods for fire alarm signals.

[0008] To achieve the above objectives, the present invention provides an auxiliary fire extinguishing system for an alternative fuel conveying equipment, including a fire detection device and a fire extinguishing device, wherein the fire detection device and the fire extinguishing device are disposed at the head and tail of the conveying equipment.

[0009] Fire detection equipment is used to monitor whether a fire has occurred, including video surveillance, flame detectors, and temperature sensors;

[0010] Fire extinguishing equipment is used to extinguish fires on site, including control valves and open nozzles;

[0011] The auxiliary fire suppression system for alternative fuel delivery equipment also includes a control system, which is electrically connected to the fire detection equipment and controls the alarm or fire suppression equipment to operate based on the monitoring results of the fire detection equipment.

[0012] Preferably, the fire extinguishing equipment includes a control valve and an open sprinkler head. The control valve is installed on the fire water pipe, and the open sprinkler head is installed at the end of the fire water pipe. The control system is electrically connected to the control valve to control the operation of the control valve.

[0013] Preferably, the control system and the control valve are electrically connected via a field start button.

[0014] Preferably, the on-site start button can be manually controlled.

[0015] Preferably, a bypass manual valve is provided in parallel with the control valve.

[0016] Preferably, multiple open nozzles are arranged along the length of the conveying equipment.

[0017] Preferably, multiple temperature sensors are arranged along the length of the conveying equipment.

[0018] Preferably, the control system independently controls the fire detection and extinguishing equipment at the head and tail of the conveying equipment.

[0019] According to the above technical solution, the fire detection equipment of the present invention is used to determine whether a fire has occurred, including video surveillance, a flame detector and a temperature sensor. The video surveillance uses a camera to collect on-site video in real time and uses computer vision algorithms to analyze image features.

[0020] In one implementation, video surveillance performs feature recognition on flames by detecting specific color, shape changes, or flashing frequency (flames typically flash at a frequency of 3-30Hz) of dynamic flames to determine whether a target in the video is a flame.

[0021] In another implementation, video surveillance can determine the fire situation through smoke identification: recognizing the diffusion patterns of grayish-white / black plumes of smoke. Alternatively, thermal radiation analysis can be used to determine the fire situation: infrared cameras can capture abnormal thermal radiation distribution in high-temperature areas.

[0022] Video surveillance offers advantages such as wide coverage and intuitive fire source location. Furthermore, combining it with AI algorithms can reduce false alarm rates. However, because it requires cameras to capture images and perform special recognition based on those images, it is easily affected by ambient light, fog, or smoke, necessitating regular lens cleaning.

[0023] Temperature sensors can detect sudden temperature rises (e.g., above a 70°C threshold) or rate of temperature increase (e.g., 5°C / min) at the sensor's location. These sensors primarily detect temperature changes through a sensing medium and are unaffected by smoke or light. Therefore, temperature sensors can effectively complement video surveillance.

[0024] Therefore, using multiple devices to monitor fire conditions can effectively avoid the problem of false alarms caused by using only one device.

[0025] When any of the video surveillance, flame detectors, or temperature sensors sends a fire alarm signal, the control system will activate the alarm device to emit an audible and visual alarm signal to avoid false alarms. This alarm signal is used to remind personnel to check the scene for a fire or the risk of a fire. If a fire is confirmed manually, the control valve can be opened manually. If no fire is confirmed manually, the alarm can be reset directly in the system to cancel the alarm.

[0026] Because temperature sensors can only detect sudden temperature rises at their location, when one of the multiple temperature sensors issues a fire alarm, the control system activates an alarm system that emits an audible and visual alarm to alert personnel to check for fire or the potential for fire. When two or more temperature sensors issue fire alarms, the probability of a fire on site increases significantly. Furthermore, adjacent temperature sensors are typically spaced apart; two sensors indicating a sudden temperature rise suggest that the fire may have begun to spread and cover a certain area. In this case, the control system activates the control valve, immediately opening the open sprinkler heads to extinguish the fire.

[0027] If a fire is detected in the central control room via video surveillance, the control valves can be activated directly through the control system to extinguish the fire on site.

[0028] Therefore, the auxiliary fire extinguishing system of this alternative fuel delivery equipment reliably identifies the fire situation on site by using a variety of different sensors, reducing the probability of false alarms. Moreover, the control system can provide different responses to the fire alarm signals fed back by the fire detection equipment. When only one device feeds back a fire alarm signal, the control system only issues an alarm message, thereby effectively avoiding false alarms and malfunctions. When two devices or two temperature sensors issue fire alarm signals, the control system will immediately activate the fire extinguishing equipment, thereby avoiding delays in fire extinguishing.

[0029] Other features and advantages of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0030] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the following detailed description to explain the invention, but do not constitute a limitation thereof. In the drawings:

[0031] Figure 1 This is a schematic diagram illustrating the working principle of an auxiliary fire extinguishing system for an alternative fuel delivery device.

[0032] Figure 2 It is a control principle diagram of a control system;

[0033] Figure 3 This is a flowchart illustrating the workflow of an auxiliary fire suppression system for alternative fuel delivery equipment.

[0034] Explanation of reference numerals in the attached figures

[0035] 11 Video surveillance 12 Flame detectors

[0036] 13 Temperature sensor 21 Control valve

[0037] 22-type open sprinkler head 3 alarm device

[0038] 23 Fire water pipe 24 Bypass manual valve

[0039] 4. On-site start button 5. Control system

[0040] 10 Conveying Equipment Detailed Implementation

[0041] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0042] In this invention, unless otherwise stated, directional terms such as "head," "tail," and "length direction" included in the terminology represent only the orientation of the term in its conventional use or are common terms understood by those skilled in the art, and should not be regarded as limitations on the term.

[0043] See Figure 1 The auxiliary fire extinguishing system for an alternative fuel conveying equipment includes an alarm device 3, a fire detection device, and a fire extinguishing device, with the fire detection device and the fire extinguishing device installed at the head and tail of the conveying equipment.

[0044] Fire detection equipment is used to determine whether a fire has occurred, including video surveillance 11, flame detector 12 and temperature sensor 13;

[0045] The fire extinguishing equipment is used to extinguish on-site fires and includes a control valve 21 and an open nozzle 22.

[0046] The auxiliary fire extinguishing system for alternative fuel delivery equipment also includes a control system. The control system is electrically connected to the alarm device 3 and the fire detection device, and controls the alarm device 3 or the fire extinguishing device to operate based on the detection results of the fire detection device.

[0047] Through the implementation of the above technical solution, the fire detection equipment is used to determine whether a fire has occurred, including video surveillance 11, flame detector 12 and temperature sensor 13. Among them, video surveillance 11 collects on-site video in real time through a camera and analyzes image features using computer vision algorithms.

[0048] In one embodiment, the video surveillance 11 performs feature recognition on the flame, and determines whether the target in the video is a flame by detecting the specific color, shape changes or flashing frequency of the dynamic flame (flames usually flash at a frequency of 3-30Hz).

[0049] In another implementation, video surveillance 11 can determine the fire situation through smoke identification: identifying the diffusion pattern of grayish-white / black plumes of smoke. Alternatively, it can determine the fire situation through thermal radiation analysis: an infrared camera can capture abnormal thermal radiation distribution in high-temperature areas.

[0050] Video surveillance offers advantages such as wide coverage and intuitive fire source location. Furthermore, combining it with AI algorithms can reduce false alarm rates. However, because the camera needs to capture images and perform special recognition based on those images, it is easily affected by ambient light, fog, or smoke, requiring regular lens cleaning.

[0051] Temperature sensor 13 can detect sudden temperature rises (e.g., >70°C threshold) or temperature rise rates (e.g., 5°C / min) at its location. When using temperature sensor 13, it primarily detects temperature changes through a sensing medium and is unaffected by smoke or light. Therefore, temperature sensor 13 can effectively complement video surveillance 11.

[0052] Therefore, using multiple devices to monitor fire conditions can effectively avoid the problem of false alarms caused by using only one device.

[0053] When any of the video surveillance devices 11, flame detector 12, and temperature sensor 13 issues a fire alarm signal, the control system will activate alarm device 3 to issue an audible and visual alarm signal to avoid false alarms. This audible and visual alarm signal is used to remind personnel to check whether there is a fire or a fire hazard on site. If a fire is indeed found after manual confirmation, control valve 21 can be manually opened. If no fire is found after manual confirmation, the system can be reset to cancel the alarm.

[0054] Since temperature sensor 13 can only detect sudden temperature rises at its location, when one of the multiple temperature sensors 13 issues a fire alarm signal, the control system will activate alarm device 3 to issue an audible and visual alarm signal. This alarm signal is used to remind personnel to check whether there is a fire or a fire hazard at the scene. When two or more temperature sensors 13 issue fire alarm signals, the probability of a fire at the scene increases significantly. Moreover, there is usually a certain distance between adjacent temperature sensors 13. If two temperature sensors 13 indicate a sudden temperature rise, it means that the fire may have started to spread and cover a certain area. At this time, the control system will activate control valve 21 and immediately open open sprinkler heads 22 to extinguish the fire at the scene.

[0055] If the central control room detects a fire through video monitoring 11, it can directly activate control valve 21 through the control system to extinguish the fire on site.

[0056] Therefore, the auxiliary fire extinguishing system of this alternative fuel delivery equipment reliably identifies the fire situation on site by using a variety of different sensors, reducing the probability of false alarms. Moreover, the control system can provide different responses to the fire alarm signals fed back by the fire detection equipment. When only one device feeds back a fire alarm signal, the control system only issues an alarm message, thereby effectively avoiding false alarms and malfunctions. When two devices or two temperature sensors issue fire alarm signals, the control system will immediately activate the fire extinguishing equipment, thereby avoiding delays in fire extinguishing.

[0057] In this embodiment, preferably, the fire extinguishing equipment includes a control valve 21 and an open sprinkler head 22. The control valve 21 is installed on the fire water pipe 23, and the open sprinkler head 22 is installed at the end of the fire water pipe 23. The control system is electrically connected to the control valve 21 to control the operation of the control valve 21.

[0058] When the fire detection equipment detects a fire and the fire extinguishing equipment needs to be activated, the control system can directly activate the control valve 21. After the control valve 21 is opened, the fire water in the fire water pipe can directly enter the open sprinkler head 22 and be sprayed out by the open sprinkler head 22 to extinguish the fire on site.

[0059] In this embodiment, preferably, the control system and the control valve 21 are electrically connected via a field start button 4.

[0060] The control valve 21 is set as an electric ball valve, which is controlled by the field start button 4. The control system can open and close the control valve 21 by controlling the field start button 4.

[0061] In this embodiment, preferably, the on-site start button 4 can be manually controlled.

[0062] If the fire detection equipment does not detect a fire, but the on-site inspection personnel discover a fire during their inspection, or if the fire is discovered during an inspection after an audible and visual alarm, they can activate the fire extinguishing equipment by pressing the on-site activation button 4 to extinguish the fire on the on-site conveyor equipment.

[0063] In this embodiment, preferably, a bypass manual valve 24 is provided in parallel with the control valve 21.

[0064] When the control valve 21 malfunctions and cannot be opened, the fire extinguishing equipment can be opened by opening the bypass manual valve 24.

[0065] In this embodiment, preferably, multiple open nozzles 22 are arranged along the length of the conveying equipment.

[0066] Multiple open-type sprinklers 22 are installed along the length of the conveying equipment. When the fire extinguishing equipment is activated, all open-type sprinklers 22 will operate, and all open-type sprinklers 22 installed at the head or tail of the conveying equipment will activate to extinguish the fire in the conveying equipment within their coverage area.

[0067] In this embodiment, preferably, multiple temperature sensors 13 are arranged along the length of the conveying device.

[0068] Multiple temperature sensors 13 are arranged along the length of the conveying equipment, and a certain distance is set between two adjacent temperature sensors 13, so that multiple temperature sensors 13 can cover all the positions that need to be detected in the most economical way.

[0069] In this embodiment, preferably, the control system independently controls the fire detection equipment and fire extinguishing equipment at the head and tail of the conveying equipment.

[0070] The fire detection equipment and the fire extinguishing equipment are used together as a fire extinguishing system. A fire extinguishing system is installed at the head of the conveyor equipment and another fire extinguishing system is installed at the tail of the conveyor equipment. The two fire extinguishing systems are electrically connected to the control system.

[0071] The two fire extinguishing systems operate independently under the control of the control system and do not affect each other.

[0072] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0073] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not describe the various possible combinations separately.

[0074] Furthermore, various different embodiments of the present invention can be combined in any way, as long as they do not violate the spirit of the present invention, they should also be regarded as the content disclosed by the present invention.

Claims

1. An auxiliary fire extinguishing system for an alternative fuel delivery apparatus, characterized by It includes fire detection equipment and fire extinguishing equipment, which are installed at the head and tail of the conveyor equipment; Fire detection equipment is used to monitor whether a fire has occurred, including video surveillance (11), flame detectors (12) and temperature sensors (13); Fire extinguishing equipment is used to extinguish on-site fires, including control valves (21) and open nozzles (22); The auxiliary fire extinguishing system for alternative fuel delivery equipment also includes a control system, which is electrically connected to the fire detection equipment and controls the alarm equipment (3) or the fire extinguishing equipment to operate based on the monitoring results of the fire detection equipment.

2. The supplemental fire extinguishing system for an alternative fuel delivery apparatus of claim 1, wherein, The fire extinguishing equipment includes a control valve (21) and an open sprinkler head (22). The control valve (21) is installed on the fire water pipe (23), and the open sprinkler head (22) is installed at the end of the fire water pipe (23). The control system is electrically connected to the control valve (21) to control the operation of the control valve (21).

3. The supplemental fire suppression system for an alternative fuel delivery apparatus of claim 2, wherein, The control system and the control valve (21) are electrically connected via the field start button (4).

4. The supplemental fire suppression system for an alternative fuel delivery apparatus of claim 3, wherein, The on-site start button (4) can be manually controlled.

5. The supplemental fire extinguishing system for an alternative fuel delivery apparatus of claim 2, wherein, A bypass manual valve (24) is provided in parallel with the control valve (21).

6. The supplemental fire extinguishing system for an alternative fuel delivery apparatus of claim 1, wherein, Multiple open nozzles (22) are set along the length of the conveying equipment.

7. The supplemental fire extinguishing system for an alternative fuel delivery apparatus of claim 1, wherein, Multiple temperature sensors (13) are installed along the length of the conveying equipment.

8. The supplemental fire extinguishing system for an alternative fuel delivery apparatus of any of claims 1-7, wherein, The control system independently controls the fire detection and extinguishing equipment at the head and tail of the conveying equipment.

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