Composite detection automatic fire extinguishing system and method suitable for closed small space

Abstract

The invention provides a composite detection automatic fire extinguishing system and method suitable for a closed small space, the system comprises a fire extinguishing component, a nozzle, a composite detector, a signal communication component and a power supply module, the fire extinguishing component is connected with the nozzle, the fire extinguishing component is connected with the signal communication component through a signal line, and the composite detector is connected with the signal communication module. The method comprises the following steps: configuring a corresponding number of composite detection automatic fire extinguishing devices according to the number of electrical screen cabinets, and selecting signal communication according to the type of a detector and a communication protocol; fire characteristic data in each screen cabinet are monitored in real time by using a composite detector or a detector group, and the data are uploaded to a signal communication part in real time; the signal communication part compares the fire characteristic data with a set threshold value, and if the fire characteristic data exceeding the threshold value exist, an early warning signal is sent out; and if not, the signal communication component performs data processing and environmental parameter acquisition compensation.

Description

Technical Field

[0001] The invention belongs to the field of fire protection, and in particular relates to a composite detection automatic fire extinguishing system and method suitable for a closed small space. Background Art

[0002] With the rapid economic development and the continuous growth of industrial output value, the demand for electricity has been rising year by year. As essential equipment, electrical equipment such as distribution cabinets and electric control cabinets have also seen an increasing number of electrical equipment in operation. However, in this process, the number of cases of fire in distribution cabinets has also shown an increasing trend year by year, which has become a problem that needs to be solved urgently. This is because electrical equipment such as distribution cabinets and electric control cabinets usually have a large number of wires, cables and electrical components inside. During long-term operation, these equipment will generate a lot of heat and sparks, which may cause fires. In addition, if the fire is not handled in time, it will also pose a more serious threat to personnel and property. Therefore, fire safety management of electrical equipment such as distribution cabinets and electric control cabinets is very important.

[0003] At present, most of the closed spaces such as power distribution cabinets and switch cabinets are not equipped with automatic fire extinguishing equipment. In general, only simple passive fire extinguishing equipment such as cart-type dry powder and portable dry powder are installed in the power distribution room. In this way, the staff needs to operate the fire extinguisher to extinguish the fire, which is relatively laborious. At present, the protection forms of electrical cabinets such as power distribution cabinets are mainly divided into two basic types: overall protection of the electrical room and individual protection of the electrical cabinet. For the overall protection of scenes such as large power distribution rooms, the cabinet-type heptafluoropropane fire extinguishing system, aerosol fire extinguishing system or dry powder fire extinguishing system usually designed and arranged is also a full flooding fire extinguishing system designed according to the volume of the room. Under the overall space protection form of the room, when a fire occurs in an electrical equipment cabinet, the automatic fire extinguishing device will release the fire extinguishing agent to all electrical cabinets in the entire space, which cannot solve the initial fire in a single power distribution cabinet, will miss the best fire extinguishing time, and cause greater fire losses. In addition, this indiscriminate release method will cause a lot of waste, making it difficult to effectively control the cost of fire extinguishing. The protection form in the electrical cabinet generally adopts internal pressure storage or external pressure storage perfluorohexanone automatic fire extinguishing device as the main means of fire extinguishing. These automatic fire extinguishing devices usually rely on detectors such as temperature sensors or smoke sensors for fire detection. Once the detector detects abnormal temperature or smoke concentration, it will transmit the abnormal signal to the controller or control switch, thereby triggering the agent release switch to continuously diffuse the fire extinguishing agent throughout the electrical cabinet to achieve the purpose of fire extinguishing. The fire extinguishing device for cabinet protection usually adopts a single fire detection method, does not have the ability of composite detection, and has lag. In small cabinets and small confined spaces with fire hazards, there is often no automatic monitoring and active fire extinguishing application system. When a fire occurs, there is no personnel on duty. Even if the fire extinguishing device has been activated, the remote on-duty personnel cannot know the situation on the scene in time, and cannot promptly launch subsequent air defense measures and linkage operations, causing unnecessary losses.

[0004] Therefore, providing an active fire extinguishing system suitable for small enclosed spaces, which can timely monitor the initial fire in the cabinet, respond quickly, and provide timely feedback and linkage, has become an urgent problem to be solved. Summary of the invention

[0005] In order to solve the deficiencies in the prior art, the present invention provides a composite detection automatic fire extinguishing system suitable for closed small spaces, which realizes the fire alarm and prevention and control functions in the electrical cabinet by monitoring and analyzing a variety of fire characteristic data.

[0006] The present invention adopts the following technical solution.

[0007] The present invention provides a composite detection automatic fire extinguishing system suitable for a closed small space, comprising:

[0008] A fire extinguishing component, a sprinkler, a composite detector, a signal communication component and a power module. The fire extinguishing component is connected to the sprinkler, the fire extinguishing component is connected to the signal communication component through a signal line, and the composite detector is connected to the signal communication module.

[0009] Preferably, the fire extinguishing component is used to provide perfluorohexanone fire extinguishing medium, spray the fire extinguishing medium through the nozzle, and transmit the start-up feedback signal to the signal communication component.

[0010] Preferably, the composite detector is used to detect multiple fire signals in the protected space, and after analysis and judgment by the signal communication component, a start signal is transmitted to the fire extinguishing component.

[0011] The present invention also provides a composite detection automatic fire extinguishing method applicable to a closed small space, the method is a method for using the aforementioned composite detection automatic fire extinguishing system applicable to a closed small space, comprising:

[0012] Step 1: Configure the corresponding number of composite detection automatic fire extinguishing devices according to the number of electrical cabinets, and select signal communication according to the detector type and communication protocol;

[0013] Step 2: Use a composite detector or a detector group to monitor the fire characteristic data in each panel cabinet in real time, and upload the data to the signal communication component in real time;

[0014] Step 3: The signal communication component compares the fire characteristic data with the set threshold value. If there is fire characteristic data exceeding the threshold value, an early warning signal is issued; if not, jump to step 4;

[0015] Step 4: The signal communication component performs data processing and environmental parameter collection and compensation, and then jumps to step 2.

[0016] Preferably, the step 1 comprises:

[0017] Step 1.1: Configure n composite detection automatic fire extinguishing devices for n cabinets, and set the detectors to uniformly configure the 485 interface for bus acquisition, or use different types of parameter CAN bus acquisition;

[0018] Step 1.2: Use a fire alarm controller or transmission control host of the same type and compatible communication protocol as the detector as the control host.

[0019] Preferably, step 2 includes using a composite detector or a detector group to monitor the fire characteristic data in each cabinet in real time, including: smoke concentration, temperature, carbon monoxide, volatile organic compounds (VOC) and hydrogen, and uploading the data to the signal communication component.

[0020] Preferably, step 3 comprises:

[0021] Step 3.1, set the smoke concentration threshold to aobs / m, when the smoke concentration exceeds the smoke concentration threshold, the controller outputs a warning signal; set the temperature threshold to b℃, when the temperature exceeds the temperature threshold, the controller outputs a warning signal; if there is no abnormality in the temperature and smoke concentration, jump to step 3.2;

[0022] Step 3.2, set the carbon monoxide concentration threshold to cppm. When the carbon monoxide concentration exceeds the carbon monoxide concentration threshold, the controller outputs a warning signal; set the hydrogen concentration threshold to dppm. When the hydrogen concentration exceeds the hydrogen concentration threshold, the controller outputs a warning signal; if there is no abnormality in the carbon monoxide concentration and the hydrogen concentration, jump to step 3.3;

[0023] Step 3.3, set the VOC concentration threshold to eppm. When the VOC concentration exceeds the VOC concentration threshold, the controller outputs a warning signal; if the VOC concentration is normal, jump to step 4.

[0024] Preferably, the step 3 further comprises:

[0025] The smoke concentration threshold a is 0.5, the temperature threshold b is 180, the carbon monoxide concentration threshold c is 200, the hydrogen concentration threshold d is 100, and the VOC concentration threshold e is 150.

[0026] The present invention also provides a terminal, including a processor and a storage medium;

[0027] The storage medium is used to store instructions;

[0028] The processor is configured to operate according to the instructions to execute the steps according to the aforementioned method.

[0029] The present invention also provides a computer-readable storage medium on which a computer program is stored, and when the program is executed by a processor, the steps of the above method are implemented.

[0030] The beneficial effect of the present invention is that, compared with the prior art, it adopts a fire composite detection technology, integrates the detection functions of multiple characteristic factors such as smoke, temperature, hydrogen and VOC, conducts all-round detection and analysis of multiple fire characteristics in the protection area, and outputs an alarm signal. It can sensitively detect parameters such as smoke, temperature, and combustible gas concentration in the area, breaking through the drawbacks of single detection signals and detection lag of traditional detectors, solving the problems of single monitoring data and few early warning situations in the prior art, effectively monitoring the fire situation, and providing a fire extinguishing start control signal for the composite detection automatic fire extinguishing system to realize timely detection of abnormalities in the area and early warning alarm.

[0031] The highly integrated miniaturized design greatly saves space, can realize detection and fire extinguishing deployment in limited space, realize internal fire air defense in small closed spaces such as power distribution cabinets and electrical cabinets, and respond in time to avoid further spread and expansion of fire. The device signal transmission can support multiple communication methods such as dry contact, CAN, and 485. The real-time data detected can be transmitted to the monitoring background to realize remote monitoring and linkage control, from passive to active. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the structure of a composite detection automatic fire extinguishing system suitable for a closed small space in the present invention;

[0033] Figure 2 The present invention is a schematic flow chart of a composite detection automatic fire extinguishing method suitable for a closed small space.

[0034] Figure numerals: 1-fire extinguishing component, 2-sprinkler, 3-composite detector, 4-signal communication component, 5-power module. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the present invention clearer, the technical scheme of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The embodiments described in this application are only part of the embodiments of the present invention, not all of them. Based on the spirit of the present invention, other embodiments obtained by ordinary technicians in this field without creative work are all within the scope of protection of the present invention.

[0036] like Figure 1 As shown, embodiment 1 of the present invention provides a composite detection automatic fire extinguishing system suitable for a closed small space, comprising a fire extinguishing component 1, a nozzle 2, a composite detector 3, a signal communication component 4 and a power module 5, wherein the fire extinguishing component 1 is connected to the nozzle 2, the fire extinguishing component 1 is connected to the signal communication component 4 via a signal line, and the composite detector 3 is connected to the signal communication module 4;

[0037] The fire extinguishing component 1 is used to provide perfluorohexanone fire extinguishing medium (or other fire extinguishing medium can be selected), spray the fire extinguishing medium through the nozzle 2, and transmit the start feedback signal to the signal communication component 4, which can be fed back to the monitoring background according to the on-site requirements.

[0038] In practical applications, the fire extinguishing component 1 provides a high-speed spray of perfluorohexanone fire extinguishing medium, which is dispersed in the protection area. The airflow will spray toward the fire point in the area, which has a suffocating effect of isolating oxygen and realizing full immersion fire extinguishing. The present invention has the advantage of good fire extinguishing effect.

[0039] The composite detector 3 is used to detect various fire signals in the protected space, and after being analyzed and judged by the signal communication component 4, a start signal is transmitted to the fire extinguishing component 1.

[0040] When a fire occurs, the composite detector 4 monitors the changes in smoke, temperature and VOC concentration in the protected area, and draws an alarm judgment through multi-parameter composite early warning analysis. The start signal is transmitted to the fire extinguishing component 1 through the signal communication module 4 to start it, and the start signal is fed back to the signal communication component 4. The signal communication component 4 can upload the alarm information to the monitoring background.

[0041] like Figure 2 As shown, Embodiment 2 of the present invention provides a composite detection automatic fire extinguishing system suitable for a closed small space, comprising:

[0042] Step 1: Configure the corresponding number of composite detection automatic fire extinguishing devices according to the number of electrical cabinets, and select signal communication according to the detector type and communication protocol;

[0043] Step 1.1: Configure n composite detection automatic fire extinguishing devices for n cabinets. The detectors can be set to uniformly configure 485 interfaces for bus data collection, or different types of parameter CAN bus data collection can be used.

[0044] Step 1.2: Use a fire alarm controller or transmission control host of the same type and compatible with the communication protocol as the detector as the control host;

[0045] Considering installation, commissioning and economic benefits, try to choose detectors of the same type and compatible communication protocol or detection sensors that can realize multi-parameter composite at the same time with a single protocol.

[0046] Step 2: Use a composite detector or a detector group to monitor the fire characteristic data in each panel cabinet in real time, and upload the data to the signal communication module in real time;

[0047] Use composite detectors or detector groups to monitor the fire characteristic data in each cabinet in real time, including smoke concentration, temperature, carbon monoxide, volatile organic compounds (VOC), hydrogen, and upload the data to the signal communication module;

[0048] Step 3: The battery voltage, temperature, and current set by the BMS are generally transmitted using the CAN interface or 485 interface communication protocol.

[0049] Step 3.1, set the smoke concentration threshold to a (the present invention sets a to 0.5) obs / m, when the smoke concentration exceeds the smoke concentration threshold, the controller outputs a warning signal; set the temperature threshold to b (the present invention sets b to 180) °C, when the temperature exceeds the temperature threshold, the controller outputs a warning signal; if there is no abnormality in the temperature and smoke concentration, jump to step 3.2;

[0050] Step 3.2, set the carbon monoxide concentration threshold to c (the present invention sets c to 200) ppm. When the carbon monoxide concentration exceeds the carbon monoxide concentration threshold, the controller outputs a warning signal; set the hydrogen concentration threshold to d (the present invention sets d to 100) ppm. When the hydrogen concentration exceeds the hydrogen concentration threshold, the controller outputs a warning signal; if there is no abnormality in both the carbon monoxide concentration and the hydrogen concentration, jump to step 3.3;

[0051] Step 3.3, set the VOC concentration threshold to e (the present invention sets e to 150) ppm. When the VOC concentration exceeds the VOC concentration threshold, the controller outputs a warning signal; if the VOC concentration is normal, jump to step 4;

[0052] Step 4: The signal communication component 4 performs data processing and environmental parameter collection compensation, and then jumps to step 2.

[0053] The beneficial effect of the present invention is that, compared with the prior art, it adopts a fire composite detection technology, integrates the detection functions of multiple characteristic factors such as smoke, temperature, hydrogen and VOC, conducts all-round detection and analysis of multiple fire characteristics in the protection area, and outputs an alarm signal. It can sensitively detect parameters such as smoke, temperature, and combustible gas concentration in the area, breaking through the drawbacks of single detection signals and detection lag of traditional detectors, solving the problems of single monitoring data and few early warning situations in the prior art, effectively monitoring the fire situation, and providing a fire extinguishing start control signal for the composite detection automatic fire extinguishing system to realize timely detection of abnormalities in the area and early warning alarm.

[0054] The highly integrated miniaturized design greatly saves space, can realize detection and fire extinguishing deployment in limited space, realize internal fire air defense in small closed spaces such as power distribution cabinets and electrical cabinets, and respond in time to avoid further spread and expansion of fire. The device signal transmission can support multiple communication methods such as dry contact, CAN, and 485. The real-time data detected can be transmitted to the monitoring background to realize remote monitoring and linkage control, from passive to active.

[0055] The present disclosure may be a system, a method and / or a computer program product. The computer program product may include a computer-readable storage medium carrying computer-readable program instructions for causing a processor to implement various aspects of the present disclosure.

[0056] A computer-readable storage medium may be a tangible device that can hold and store instructions used by an instruction execution device. A computer-readable storage medium may be, for example, but not limited to, an electrical storage device, a magnetic storage device, an optical storage device, an electromagnetic storage device, a semiconductor storage device, or any suitable combination of the foregoing. More specific examples of computer-readable storage media (a non-exhaustive list) include: a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a static random access memory (SRAM), a portable compact disk read-only memory (CD-ROM), a digital versatile disk (DVD), a memory stick, a floppy disk, a mechanical encoding device, such as a punch card or a raised structure in a groove on which instructions are stored, and any suitable combination of the foregoing. As used herein, a computer-readable storage medium is not to be interpreted as a transient signal per se, such as a radio wave or other freely propagating electromagnetic wave, an electromagnetic wave propagating through a waveguide or other transmission medium (e.g., a light pulse through a fiber optic cable), or an electrical signal transmitted through a wire.

[0057] The computer-readable program instructions described herein can be downloaded from a computer-readable storage medium to each computing / processing device, or downloaded to an external computer or external storage device via a network, such as the Internet, a local area network, a wide area network, and / or a wireless network. The network can include copper transmission cables, optical fiber transmissions, wireless transmissions, routers, firewalls, switches, gateway computers, and / or edge servers. The network adapter card or network interface in each computing / processing device receives the computer-readable program instructions from the network and forwards the computer-readable program instructions for storage in the computer-readable storage medium in each computing / processing device.

[0058] The computer program instructions for performing the operation of the present disclosure may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-related instructions, microcode, firmware instructions, state setting data, or source code or object code written in any combination of one or more programming languages, including object-oriented programming languages, such as Smalltalk, C++, etc., and conventional procedural programming languages, such as "C" language or similar programming languages. Computer-readable program instructions may be executed completely on a user's computer, partially on a user's computer, as an independent software package, partially on a user's computer, partially on a remote computer, or completely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer via any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., using an Internet service provider to connect via the Internet). In some embodiments, an electronic circuit, such as a programmable logic circuit, a field programmable gate array (FPGA), or a programmable logic array (PLA), may be customized by utilizing the state information of the computer-readable program instructions, and the electronic circuit may execute the computer-readable program instructions, thereby realizing various aspects of the present disclosure.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents, and any modifications or equivalent replacements that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A composite detection automatic fire extinguishing system suitable for a closed small space, comprising: A fire extinguishing component, a sprinkler, a composite detector, a signal communication component and a power module. The fire extinguishing component is connected to the sprinkler, the fire extinguishing component is connected to the signal communication component through a signal line, and the composite detector is connected to the signal communication module.

2. A composite detection automatic fire extinguishing system suitable for a closed small space according to claim 1, characterized in that: The fire extinguishing component is used to provide perfluorohexanone fire extinguishing medium, spray the fire extinguishing medium through the nozzle, and transmit the start feedback signal to the signal communication component.

3. A composite detection automatic fire extinguishing system suitable for a closed small space according to claim 2, characterized in that: The composite detector is used to detect various fire signals in the protected space, and after being analyzed and judged by the signal communication component, a start signal is transmitted to the fire extinguishing component.

4. A composite detection automatic fire extinguishing method applicable to a small enclosed space, the method being a method for using a composite detection automatic fire extinguishing system applicable to a small enclosed space as claimed in any one of claims 1 to 3, comprising: Step 1: Configure the corresponding number of composite detection automatic fire extinguishing devices according to the number of electrical cabinets, and select signal communication according to the detector type and communication protocol; Step 2: Use a composite detector or a detector group to monitor the fire characteristic data in each panel cabinet in real time, and upload the data to the signal communication component in real time; Step 3: The signal communication component compares the fire characteristic data with the set threshold value. If there is fire characteristic data exceeding the threshold value, an early warning signal is issued; if not, jump to step 4; Step 4: The signal communication component performs data processing and environmental parameter collection and compensation, and then jumps to step 2.

5. A composite detection automatic fire extinguishing method applicable to a closed small space according to claim 4, characterized in that: The step 1 comprises: Step 1.1: n composite detection automatic fire extinguishing devices are configured for n cabinets, and the detectors are configured with a unified 485 interface for bus data collection, or different types of parameter CAN bus data collection are used; Step 1.2: Use a fire alarm controller or transmission control host of the same type and compatible communication protocol as the detector as the control host.

6. A composite detection automatic fire extinguishing method applicable to a closed small space according to claim 5, characterized in that: The step 2 includes using a composite detector or a detector group to monitor the fire characteristic data in each cabinet in real time, including: smoke concentration, temperature, carbon monoxide, volatile organic compounds (VOC) and hydrogen, and uploading the data to the signal communication component.

7. A composite detection automatic fire extinguishing method applicable to a closed small space according to claim 6, characterized in that: The step 3 comprises: Step 3.1, set the smoke concentration threshold to aobs / m, when the smoke concentration exceeds the smoke concentration threshold, the controller outputs a warning signal; set the temperature threshold to b℃, when the temperature exceeds the temperature threshold, the controller outputs a warning signal; if there is no abnormality in the temperature and smoke concentration, jump to step 3.2; Step 3.2, set the carbon monoxide concentration threshold to cppm. When the carbon monoxide concentration exceeds the carbon monoxide concentration threshold, the controller outputs a warning signal; set the hydrogen concentration threshold to dppm. When the hydrogen concentration exceeds the hydrogen concentration threshold, the controller outputs a warning signal; if there is no abnormality in the carbon monoxide concentration and the hydrogen concentration, jump to step 3.3; Step 3.3, set the VOC concentration threshold to eppm. When the VOC concentration exceeds the VOC concentration threshold, the controller outputs a warning signal; if the VOC concentration is normal, jump to step 4.

8. The composite detection automatic fire extinguishing method applicable to a closed small space according to claim 7, characterized in that: The step 3 also includes: The smoke concentration threshold a is 0.5, the temperature threshold b is 180, the carbon monoxide concentration threshold c is 200, the hydrogen concentration threshold d is 100, and the VOC concentration threshold e is 150.

9. A terminal comprising a processor and a storage medium; characterized in that: The storage medium is used to store instructions; The processor is configured to operate according to the instructions to execute the steps of the method according to any one of claims 1-8.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the steps of the method according to any one of claims 1 to 8 are implemented.

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