Automatic fire extinguishing system of high-voltage power distribution cabinet
By introducing an automatic fire extinguishing system with signal integration and activation modules into the high-voltage distribution cabinet, the problem of damaged extinguishing agent nozzles or damaged channels is solved, achieving a highly efficient fire extinguishing effect and ensuring that fires are controlled in a timely manner.
Patent Information
- Application Number
- CN202423155465.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2034-12-20
AI Technical Summary
In existing technologies, the extinguishing agent nozzles of high-voltage distribution cabinets are easily damaged by explosions or the channels are destroyed during a fire, resulting in the extinguishing agent being unable to spray normally and affecting the fire extinguishing efficiency.
An automatic fire extinguishing system for a high-voltage distribution cabinet was designed, comprising a detection module, a control module, and an execution module. Through a signal integration module and two sets of start-up modules, the system monitors the status of the extinguishing agent in real time, ensuring that at least one set of extinguishing modules works normally, and adjusts the spray volume or speed to ensure timely spraying of the extinguishing agent.
Effectively prevents the waste of fire extinguishing agents, ensures that fires inside high-voltage distribution cabinets are extinguished in a timely manner, avoids the spread of fire, and protects equipment safety.
Smart Images
Figure CN223914554U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to fire prevention and control technical field, specifically, relate to a kind of high-voltage switchboard automatic fire extinguishing system. BACKGROUND
[0002] High-voltage switchboard is the key equipment for power generation, transmission, distribution, power conversion and consumption in power system. The internal structure of high-voltage switchboard is complex, and the equipment value is high. In actual operation, if the joint of the wiring cable is not properly handled, or the cable diameter is too small, then during the peak load period, oxidation heating may occur. Once the oxidation heating reaches a certain degree, it will cause a fire. When a fire occurs, sparks may spread rapidly from the burning electronic equipment to other electronic equipment along the cable, which causes other equipment to be ignited, thereby causing the fire to spread and making it more difficult to extinguish the fire. Once a fire occurs, it is very difficult to put out, which may cause power supply interruption and production stoppage, and may also cause damage to expensive equipment. More seriously, some electronic equipment, such as capacitors used for circuit compensation, is prone to explosion, which may adversely affect the fire extinguishing device and affect the normal operation of the fire extinguishing device.
[0003] A Chinese utility model patent with the title "Full-fluorine hexanone composite automatic fire extinguishing system" and the publication number CN208660189U has been disclosed. The patent includes a controller, a fire extinguishing agent storage device, a starting device, a plurality of sensors to form a starting signal triggering device, an atomizing nozzle, and a signal feedback device. When the starting signal triggering device receives a fire signal, the signal feedback device feeds back a signal to the controller. The controller controls the fire extinguishing agent storage device to transmit fire extinguishing agent through the starting device. The fire extinguishing agent is sprayed through the atomizing nozzle to extinguish the fire. The utility model patent can automatically identify and start the fire extinguishing device to extinguish the fire. The full-fluorine hexanone fire extinguishing agent makes the device able to quickly and effectively put out electrical fires occurring inside the switchboard. However, the patent does not consider the situation that some electronic equipment (such as capacitors) may explode during an electrical fire. If the explosion damages the fire extinguishing agent nozzle or blocks it, the fire extinguishing agent cannot be normally sprayed, which affects the fire extinguishing efficiency. SUMMARY
[0004] The purpose of the present application is to provide a high-voltage switchboard automatic fire extinguishing system, which solves the technical problem that the fire extinguishing agent nozzle is damaged by explosion or the fire extinguishing agent channel is damaged, causing the fire extinguishing agent to be unable to be normally sprayed.
[0005] To solve the above technical problems, the application adopts the following solutions:
[0006] The utility model provides a kind of high-voltage power distribution cabinet automatic fire extinguishing system, including detection module, control module, execution module, the detection module is connected by the control module and the execution module;Its characterized in that: the control module includes processor, fire extinguishing agent control module, the input end of fire extinguishing agent control module is connected as the input end of control module with the detection module, fire extinguishing agent control module, processor, execution module are pairwise interconnected;
[0007] The fire extinguishing agent control module processes the signals transmitted by the detection module and monitors the output state of the fire extinguishing agent in the execution module.
[0008] The processor adjusts the injection amount or injection speed of the fire extinguishing agent in the execution module according to the control signal transmitted by the fire extinguishing agent control module.
[0009] In some embodiments, the fire extinguishing agent control module includes a signal integration module and two groups of start modules, the input end of the signal integration module is connected as the input end of the fire extinguishing agent control module, the output end of the signal integration module and the input end of the two groups of start modules are connected, the output end of the start module is connected with the input end of the execution module; the output end of the execution module is connected with the input end two of the start module;
[0010] The signal integration module is used to integrate the signals transmitted by the detection module and output control signals to the start module.
[0011] The start module is used to start the execution module for fire extinguishing operation, and the execution module outputs feedback signals to the start module, and the start module controls the output or stop of the fire extinguishing agent according to the feedback signals.
[0012] In some embodiments, the start module includes a switch assembly, a transistor, an AND gate, an OR gate, and a delay circuit, the control end of the switch assembly is set as the input end of the start module, the output end of the switch assembly is connected with the input end of the delay circuit, and the output end one of the start module is arranged at this connection; the output end of the delay circuit and the input end one of the AND gate are connected, and the output end two of the start module is arranged at this connection; the input end two of the AND gate is set as a control end for receiving fire extinguishing agent flow abnormal signal, the output end of the AND gate is connected with the input end one of the OR gate, the input end two of the OR gate, the output end of the OR gate, and the base of the transistor are connected, and the output end three of the start module is arranged at this connection, the collector of the transistor is connected with a power supply, and the emitter of the transistor is connected with the control end of the switch assembly.
[0013] In some embodiments, the switch assembly includes a field effect transistor, which is a PMOS tube with model number AO3401A.
[0014] In some embodiments, the signal integration module comprises an AND gate, a transistor, and a resistor, the input end of the AND gate is the input end of the signal integration module, the output end of the AND gate and the base of the transistor are connected, the collector of the transistor is connected to the power supply through the resistor, and the collector of the transistor is provided with an output end as the output end of the signal integration module at the connection position with the resistor; the emitter of the transistor is grounded.
[0015] In some embodiments, the detection module comprises an infrared flame detector and a smoke temperature composite detector, the output end of the infrared flame detector and the output end of the smoke temperature composite detector are respectively connected to the input end of the control module.
[0016] In some embodiments, the execution module comprises two groups of fire extinguishing modules, an alarm module, a power-off module, and a flow monitoring module, and the two groups of fire extinguishing modules and the alarm module, the power-off module, and the flow monitoring module are respectively connected to the control module.
[0017] In some embodiments, the model of the processor is STM32L431CCT6.
[0018] The technical scheme of the present application has at least the following advantages and beneficial effects:
[0019] The utility model discloses a fire extinguishing control module, and the fire extinguishing control module comprises a signal integration module and two groups of starting modules. BRIEF DESCRIPTION OF DRAWINGS
[0020] Figure 1 It is the overall signal flow chart of the utility model;
[0021] Figure 2 It is the signal integration module circuit diagram of the utility model;
[0022] Figure 3 It is the starting module circuit diagram of the utility model. DETAILED DESCRIPTION
[0023] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.
[0024] It should be noted that similar reference numerals and letters refer to similar items in the following drawings, and therefore, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings. If the terms "center", "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the application is usually placed, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. It should also be noted that, unless otherwise explicitly specified and limited, if the terms "providing", "installing", "connecting" appear, they should be understood broadly, for example, they can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; and can be connected inside two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.
[0025] Embodiment 1
[0026] Please refer to Figures 1-3 The present application provides a kind of high-voltage power distribution cabinet automatic fire extinguishing system, same as prior art, including detection module, control module, execution module, detection module is connected by control module and execution module;
[0027] Detection module is used to detect whether fire occurs, and it includes infrared flame detector, smoke temperature composite detector, the output end of infrared flame detector, the output end of smoke temperature composite detector is connected with the input end of control module respectively;
[0028] It should be noted that in the present embodiment, the model of infrared flame detector is SYP-011FLM;The model of smoke temperature composite detector is ZT-FBGY-2.
[0029] Execution module, it includes two groups of fire extinguishing module, alarm module, power-off module, flow monitoring module, two groups of fire extinguishing module and alarm module, power-off module, flow monitoring module are connected with control module respectively;
[0030] An alarm module is configured to alarm an abnormal condition during the fire extinguishing process.
[0031] A power-off module is configured to control the high-voltage power distribution cabinet to be powered off by the processor after a fire occurs in the high-voltage power distribution cabinet.
[0032] A flow monitoring module is configured to monitor the flow of the fire extinguishing agent during the transmission process, and indirectly determine whether the fire extinguishing device is working normally.
[0033] In this embodiment, the flow monitoring module includes a flow sensor, and the model of the flow sensor is FR03H-H0A.
[0034] A fire extinguishing module includes a fire extinguishing agent, a storage tank for storing the fire extinguishing agent, and a valve device.
[0035] In this embodiment, two fire extinguishing modules are included. Under normal circumstances, the two fire extinguishing modules spray the fire extinguishing agent at the same time to ensure that the power distribution cabinet is quickly flooded with the fire extinguishing agent. When one of the fire extinguishing modules fails, the control module controls the spraying amount or spraying speed of the fire extinguishing agent in the other normal working fire extinguishing module to ensure that the power distribution cabinet is timely flooded with the fire extinguishing agent to suppress the fire. The fire extinguishing module is a prefabricated perfluorohexanone fire extinguishing device, and the model is YF4 / 1.6N-MAMO.
[0036] It should be noted that each sensor in the detection module and each module in the execution module belong to the prior art, and therefore will not be described in detail here.
[0037] Unlike the prior art, the control module includes a processor and a fire extinguishing agent control module. The input end of the fire extinguishing agent control module is connected to the detection module as the input end of the control module. The fire extinguishing agent control module, the processor, and the execution module are connected to each other in pairs.
[0038] The fire extinguishing agent control module processes the signals transmitted by the detection module and monitors the output state of the fire extinguishing agent in the execution module.
[0039] The processor adjusts the spraying amount or spraying speed of the fire extinguishing agent in the execution module according to the control signals transmitted by the fire extinguishing agent control module.
[0040] It should be noted that the model of the processor is STM32L431CCT6.
[0041] The fire extinguishing agent control module includes a signal integration module and two groups of starting modules. The input end of the signal integration module is connected to the fire extinguishing agent control module as the input end of the fire extinguishing agent control module. The output end of the signal integration module and the input end of the two groups of starting modules are connected. The output end of the starting module is connected to the input end of the execution module. The output end of the execution module is connected to the input end of the second starting module.
[0042] The signal integration module is configured to integrate the signal transmitted by the detection module and output a control signal to the starting module.
[0043] The starting module is configured to start the execution module to perform the fire extinguishing operation, and the execution module outputs a feedback signal to the starting module, and the starting module controls the output or stop of the fire extinguishing agent according to the feedback signal.
[0044] Further, the starting module comprises a switch component, a triode, an AND gate, an OR gate, and a delay circuit, the control end of the switch component is set as the input end of the starting module, the output end of the switch component is connected with the input end one of the delay circuit, and the output end of the delay circuit and the input end one of the AND gate are connected, and the output end two of the starting module is arranged at the connection position; the input end two of the AND gate is set as the control end for receiving the fire extinguishing agent flow abnormal signal, the output end of the AND gate is connected with the input end one of the OR gate, the input end two of the OR gate, the output end of the OR gate, and the base of the triode are connected, and the output end three of the starting module is arranged at the connection position, the collector of the triode is connected with the power supply, and the emitter of the triode is connected with the control end of the switch component.
[0045] In the embodiment, the switch component comprises a field effect tube, and the field effect tube is a PMOS tube with the model number of AO3401A.
[0046] Further, the AND gate U2, the OR gate U3, the field effect tube Q2, the triode Q3, the diodes D2 and D3, and the capacitors C2, C3, C4, and C5, and the resistors R4, R5, R6, R7, R8, and R9.
[0047] The delay circuit comprises the resistor R7, the capacitor C4, and the capacitor C5, and the delay circuit is configured to ensure that the flow detection module starts to work after the starting module is started, so as to prevent the starting module from being closed in advance due to the signal transmission error.
[0048] Specifically, as shown in FIG. 2, the starting module comprises a switch component, a triode, an AND gate, an OR gate, and a delay circuit. Figure 3As shown, one end of resistor R4 is set as the TEM_IN input terminal. The other end of resistor R4 is connected to the cathode of diode D3, one end of capacitor C3, and the gate of MOSFET Q2. The source of MOSFET Q2 is connected to one end of resistor R5, one end of capacitor C2, and one end of resistor R6. The other end of resistor R6 is connected to the power supply. The other end of resistor R5 and the other end of capacitor C2 are connected and grounded. The drain of MOSFET Q2 is connected to one end of resistor R7 and one end of capacitor C4, and the P_OUT output terminal is set here. The other end of resistor R7, one end of capacitor C5, and pin 1 of AND gate U2 are connected, and the F_OUT output terminal is set here. The other end of capacitor C3, the other end of capacitor C4, and capacitor C... The other end of 5 is connected to ground; the anode of diode D3, one end of resistor R9, and the emitter of transistor Q3 are connected together, the collector of transistor Q3 is connected to the power supply, the base of transistor Q3, the anode of diode D2, and one end of resistor R8 are connected together, the other end of resistor R9 is connected to the cathode of diode D2 and grounded; the other end of resistor R8, pin 2 of OR gate U3, and pin 4 of OR gate U3 are connected together and set as COM_OUT output terminal here; pin 2 of AND gate U2 is set as F_IN input terminal, pin 3 of AND gate U2 and pin 3 of OR gate U3 are connected together and grounded; pin 5 of AND gate U2 and pin 5 of OR gate U3 are connected together and connected to the power supply, pin 4 of AND gate U2 and pin 1 of OR gate U3 are connected together.
[0049] It should be noted that the AND gate U2 is model number 74LVC1G04DBVRG; the OR gate U3 is model number 74LVC1G32GW; and the transistor Q1 is an NPN type, model number S8050.
[0050] It should be noted that the P_OUT output terminal is connected to the fire suppression module, the F_OUT output terminal is connected to the control terminal of the flow monitoring module, the F_IN input terminal is connected to the output terminal of the flow monitoring module, and the CON_OUT output terminal is connected to the processor's pin PA0.
[0051] The signal integration module includes an AND gate, a transistor, and a resistor. The input terminal of the AND gate serves as the input terminal of the signal integration module, and the output terminal of the AND gate is connected to the base of the transistor. The collector of the transistor is connected to the power supply through the resistor, and an output terminal is provided at the connection between the collector of the transistor and the resistor, which serves as the output terminal of the signal integration module. The emitter of the transistor is grounded.
[0052] Furthermore, in this embodiment, the signal integration module includes an AND gate U1, a transistor Q1, a diode D1, resistors R1, R2, and R3, and a capacitor C1;
[0053] Specifically, such as Figure 2As shown, pins 1 and 2 of AND gate U1 are set as input terminals A_IN1 and A_IN2, respectively. Pin 3 of AND gate U1 is grounded. Pin 5 of AND gate U1 is connected to one end of capacitor C1 and one end of resistor R2. The other end of capacitor C1 is grounded. The other end of resistor R2 is connected to one end of resistor R3 and grounded. The other end of resistor R3 is connected to the collector of transistor Q1, and the A_OUT output terminal is set here. Pin 4 of AND gate U1 is connected to one end of resistor R1. The other end of resistor R1 is connected to the base of transistor Q1 and the anode of diode D1. The cathode of diode D1 is connected to the emitter of transistor Q1 and grounded.
[0054] It should be noted that the AND gate U1 is model number SN74AHC1G08DBVR; the transistor Q1 is an NPN type, model number S8050;
[0055] It should be noted that the A_IN1 and A_IN2 input terminals are connected to the output terminals of the infrared flame detector and the smoke and temperature composite detector, respectively, and the A_OUT output terminal is connected to the TEM_IN input terminal.
[0056] To facilitate understanding, the fire suppression dispatch module is explained below:
[0057] When both A_IN1 and A_IN2 input terminals receive a high level output from the detection module, AND gate U1 outputs a high level to transistor Q1, transistor Q1 is turned on, and A_OUT outputs a low level.
[0058] When the TEM_IN input receives a low level, the field-effect transistor Q2 turns on. At this time, the P_OUT output first outputs a high level to the fire suppression module for fire suppression. Then, the high level output by the P_OUT output is output from the F_OUT output to the flow monitoring module through a delay circuit.
[0059] The flow monitoring module starts monitoring. When it detects an abnormality in the transmission of extinguishing agent, it outputs a control signal to the F_IN input terminal. At this time, AND gate U2 outputs a high level to OR gate U3. The high level output of OR gate U3 is transmitted to the gate of MOSFET Q2 through transistor Q3. MOSFET Q2 is turned off, and P_OUT and F_OUT output terminals output a low level. At this time, OR gate U3 is always in the high-level output state to prevent the startup module from restarting.
[0060] For ease of understanding, the system is explained below:
[0061] When a fire occurs in the distribution cabinet, the detection module detects the fire in the high-voltage distribution cabinet and transmits a signal to the control module and processor. The processor cuts off the power to the equipment in the distribution cabinet through the power-off module and notifies the staff through the alarm module. At the same time, the control module activates the two fire extinguishing modules to spray fire extinguishing agent through the signal integration module and the two sets of activation modules in sequence.
[0062] If the flow detection module detects an abnormality in the transmission of extinguishing agent in a certain fire extinguishing module, the flow detection module transmits a control signal to the start-up module. The start-up module stops the corresponding fire extinguishing module and the flow detection module from working, and at the same time feeds back the abnormality to the processor. The processor adjusts the working mode of another normally functioning fire extinguishing module based on this signal to ensure that the extinguishing agent can extinguish the fire in the high-voltage distribution cabinet in a timely manner.
[0063] It should be explained that the working method of the fire extinguishing module includes, but is not limited to, adjusting the spray volume or spray speed of the fire extinguishing agent.
[0064] It should be noted that the causes of abnormal fire extinguishing agent transmission include, but are not limited to, damage to the nozzle or damage to the fire extinguishing agent transmission channel.
[0065] The electronic components and equipment used in this embodiment can all be purchased in domestic and international markets.
[0066] The various embodiments of this utility model have now been described in detail. To avoid obscuring the concept of this utility model, some details known in the art have not been described. Those skilled in the art will fully understand how to implement the technical solution of this utility model based on the above description. The scope of this utility model is defined by the appended claims.
Claims
1. An automatic fire extinguishing system for a high-voltage switchgear, comprising a detection module, a control module, and an execution module, wherein the detection module is connected to the execution module through the control module; characterized in that: The control module includes a processor and a fire extinguishing agent regulation module. The input terminal of the fire extinguishing agent regulation module is connected to the detection module as the input terminal of the control module. The fire extinguishing agent regulation module, the processor, and the execution module are interconnected in pairs. The extinguishing agent control module processes the signals transmitted by the detection module and monitors the output status of the extinguishing agent in the execution module. The processor adjusts the amount or speed of fire extinguishing agent sprayed in the execution module according to the control signal transmitted by the fire extinguishing agent control module.
2. The automatic fire extinguishing system for high-voltage distribution cabinets according to claim 1, characterized in that, The extinguishing agent control module includes a signal integration module and two sets of activation modules. The input terminal of the signal integration module serves as the input terminal of the extinguishing agent control module. The output terminal of the signal integration module is connected to one of the input terminals of the two sets of activation modules. The output terminal of the activation module is connected to the input terminal of the execution module. The output terminal of the execution module is connected to the other two input terminals of the activation modules. The signal integration module is used to integrate the signals transmitted by the detection module and output control signals to the start-up module; The starting module is used to start the execution module to perform fire extinguishing operations. At the same time, the execution module outputs a feedback signal to the starting module, and the starting module controls the output or stops of the fire extinguishing agent according to the feedback signal.
3. The automatic fire extinguishing system for a high-voltage distribution cabinet according to claim 2, characterized in that, The starting module includes a switching assembly, a transistor, an AND gate, an OR gate, and a delay circuit. The control terminal of the switching assembly is set as the input terminal of the starting module, and the output terminal of the switching assembly is connected to the input terminal of the delay circuit, with the first output terminal of the starting module located at this connection. The output terminal of the delay circuit is connected to the first input terminal of the AND gate, with the second output terminal of the starting module located at this connection. The second input terminal of the AND gate is set as a control terminal for receiving abnormal signals of fire extinguishing agent flow. The output terminal of the AND gate is connected to the first input terminal of the OR gate. The second input terminal of the OR gate, the output terminal of the OR gate, and the base of the transistor are connected, with the third output terminal of the starting module located at this connection. The collector of the transistor is connected to a power supply, and the emitter of the transistor is connected to the control terminal of the switching assembly.
4. The automatic fire extinguishing system for a high-voltage distribution cabinet according to claim 3, characterized in that, The switching assembly includes a field-effect transistor, which is a PMOS transistor with the model number AO3401A.
5. The automatic fire extinguishing system for a high-voltage distribution cabinet according to claim 2, characterized in that, The signal integration module includes an AND gate, a transistor, and a resistor. The input terminal of the AND gate serves as the input terminal of the signal integration module. The output terminal of the AND gate is connected to the base of the transistor. The collector of the transistor is connected to the power supply through the resistor, and an output terminal is provided at the connection between the collector of the transistor and the resistor, which serves as the output terminal of the signal integration module. The emitter of the transistor is grounded.
6. The automatic fire extinguishing system for high-voltage distribution cabinets according to claim 1, characterized in that, The detection module includes an infrared flame detector and a smoke-temperature composite detector. The output terminals of the infrared flame detector and the smoke-temperature composite detector are respectively connected to the input terminal of the control module.
7. The automatic fire extinguishing system for high-voltage distribution cabinets according to claim 1, characterized in that, The execution module includes two sets of fire extinguishing modules, an alarm module, a power-off module, and a flow monitoring module. The two sets of fire extinguishing modules, as well as the alarm module, power-off module, and flow monitoring module, are respectively connected to the control module.
8. The automatic fire extinguishing system for a high-voltage distribution cabinet according to claim 1, characterized in that, The processor is an STM32L431CCT6.
Citation Information
Patent Citations
Own ketone combined type automatic fire extinguishing system of perfluor
CN208660189U