A fire control system for a wind turbine generator cable guide ring

Abstract

The utility model discloses a kind of fire control systems for wind turbine generator unit cable guide ring, including passive radio frequency external temperature measurement label of radio frequency communication, signal transceiver and alarm controller. Passive radio frequency external temperature measurement label is located near cable guide ring, receives the radio frequency excitation signal of signal transceiver real-time collection ambient temperature and returns;Signal transceiver sends temperature data to alarm controller, controller compares preset threshold and generates early warning or fire alarm signal, issues to host computer and fan controller, fan controller corresponding executes load reduction, shutdown or recovery operation. System is matched with non-pressure storage fire extinguishing assembly of built-in passive radio frequency internal temperature measurement label, and fire is judged in combination with internal and external temperature, and aerosol gas production promotes medicament directional injection when fire alarm. The utility model is passive temperature measurement wiring-free, adapts tower drum vibration working condition, and double temperature determination reduces false alarm and miss alarm, and it has temperature measurement alarm, unit protection, on-site fire extinguishing function and unit protection, reduce high-altitude maintenance workload.

Description

Technical Field

[0001] This utility model relates to the technical field of fire protection control equipment for wind turbine generator sets, specifically to a fire protection control system for cable guide rings of wind turbine generator sets. Background Technology

[0002] This section introduces background technology that may be related to various aspects of the embodiments of this utility model, which is believed to provide useful background information to help readers better understand the various aspects of the embodiments of this utility model. Therefore, it is understood that the description in this section is for the above purposes and does not constitute an admission of the prior art.

[0003] In today's booming development of green energy, wind power, as an important component of clean energy, is seeing its installed capacity continuously increase and its service life gradually extend. A wind turbine is a device that converts wind energy into electrical energy. It uses wind power to drive the turbine blades to rotate, and then uses a speed increaser to increase the rotation speed, thereby causing the generator to produce electricity. However, with the long-term operation of wind turbine units, the risk of fire is becoming increasingly prominent. Especially in recent years, frequent fire accidents have become a safety challenge that people must face.

[0004] The power cable suspended within the wind turbine tower, being a rotating component, experiences relative movement with the cable fixing and limiting structure within the tower. During turbine yaw, the cable is lifted to some extent as it twists with the nacelle. As long as contact and relative movement exist, wear is unavoidable. The cable's resistance generates heat when current flows through it. With increasing turbine capacity and the increasing number of cables in the twisted section, these cables tend to bunch up during yaw, leading to greater heat dissipation. Furthermore, the natural swaying of the turbine causes the cable to impact the guide rings, exacerbating the fire risk due to cable wear at the guide rings.

[0005] Existing fire alarm control systems for wind turbine generators require power, typically sourced from the nacelle. The power supply and feedback cables, which rotate with the yaw, are prone to breakage, resulting in complex wiring. Furthermore, fire alarms are usually absent at cable guide rings, requiring personnel to periodically check for activation of the fire suppression components. The long-term vibration of the wind turbine tower and the rotation of the cables easily cause line breaks and poor connections, leading to a high failure rate and making them unsuitable for the long-term maintenance-free operation requirements of wind turbines.

[0006] Existing fire protection solutions for wind turbines mostly use fixed-point smoke and temperature detectors, overall sprinkler fire suppression, or whole-unit shutdown protection. They only have alarm and wind turbine shutdown protection functions, but lack local rapid fire suppression mechanisms. They cannot quickly suppress the fire in the early stages of the fire, which can easily lead to large-scale cable burning, unit shutdown, or even safety accidents. They also cannot combine ambient temperature and the internal temperature of the fire source for comprehensive fire alarm judgment, resulting in a high false alarm rate and a high missed alarm rate. Utility Model Content

[0007] The technical problem to be solved is how to provide a fire control system for cable guide rings in wind turbine generator sets.

[0008] The purpose of this utility model is to overcome the defects in the existing technology and provide a fire control system for the cable guide ring of wind turbine generator set, so as to realize the layered and accurate temperature measurement, comprehensive fire alarm judgment, fire early warning and wind turbine generator set protection action of the cable guide ring of wind turbine tower.

[0009] In a first aspect, embodiments of this utility model provide a fire control system for a cable guide ring of a wind turbine generator set, comprising: The passive radio frequency external temperature measurement tag and signal transceiver communicate via radio frequency signals, and also includes an alarm controller that communicates with the signal transceiver. The passive radio frequency external temperature measurement tag is located near the cable guide ring inside the wind turbine tower. The passive radio frequency external temperature measurement tag receives the radio frequency excitation signal sent by the signal transceiver. The passive radio frequency external temperature measurement tag senses the external ambient temperature signal in real time and sends it. The transceiver is connected to a radio frequency signal antenna and is installed inside the wind turbine tower. The transceiver transmits radio frequency excitation signals to a predetermined range on the tower through the radio frequency signal antenna. The transceiver receives the external ambient temperature signal sensed by the passive radio frequency external temperature measurement tag and transmits it to the alarm controller. The alarm controller receives the external ambient temperature signal from the signal transceiver and compares it with a preset temperature threshold to generate an early warning signal and / or a fire alarm signal, and transmits it to the host computer and the wind turbine controller of the wind turbine generator set; the wind turbine controller performs corresponding shutdown or recovery control actions according to the early warning signal and / or fire alarm signal.

[0010] In other embodiments of the fire control system described in this specification, the signal transceiver includes: An RFID radio frequency transceiver chip and an access coupling circuit that is communicatively connected to a radio frequency signal antenna, wherein the RFID radio frequency transceiver chip is communicatively connected to the access coupling circuit; The RFID radio frequency transceiver chip is also communicatively connected to the access coupling circuit, and the circuit also includes a clock circuit, a matched filter circuit, and an external filter circuit that are communicatively connected to the RFID radio frequency transceiver chip. The alarm controller includes: The main control MCU is connected to the RFID radio frequency transceiver chip via a bus communication, and the signal communication circuit and switch output circuit are connected to the main control MCU.

[0011] In other embodiments of the fire control system described in this specification, It also includes a power supply circuit electrically connected to the signal transceiver, the power supply circuit comprising: The transformer circuit, rectifier circuit, pre-stage filter and voltage regulator circuit and post-stage voltage regulator and filter circuit are electrically connected in sequence. The transformer circuit includes a transformer for stepping down the mains power and converting it into low-voltage AC power; The rectifier circuit includes a bridge rectifier for rectifying low-voltage AC power into unidirectional pulsating DC power. The pre-stage filtering and voltage regulation circuit includes a three-terminal regulator, which is used to filter and process the pulsating DC power for the first time before outputting it. The subsequent voltage regulation and filtering circuit includes a voltage regulator chip, which is used to perform secondary filtering of the power supply after the initial filtering process and output DC power.

[0012] In other embodiments of the fire control system described in this specification, It also includes a non-pressurized fire extinguishing assembly disposed on the cable guide ring, which includes: a fire extinguishing mechanism and a fire extinguishing triggering mechanism disposed at the tail of the fire extinguishing mechanism; The fire extinguishing triggering mechanism includes: a heat-sensitive connecting wire assembly and a gas-generating box, wherein the gas-generating box contains an aerosol gas-generating agent; one end of the heat-sensitive connecting wire assembly is located near the cable guide ring inside the wind turbine tower, and the other end of the heat-sensitive connecting wire assembly passes through the gas-generating box and is introduced into the gas-generating box; the heat-sensitive connecting wire assembly transfers heat information from outside the gas-generating box to the gas-generating box, causing the aerosol gas-generating agent inside the gas-generating box to burn; The fire extinguishing mechanism includes: a storage cylinder for holding extinguishing agents, a piston mechanism at the tail end of the storage cylinder, and a nozzle at the head end of the storage cylinder; the nozzle extends toward the guide ring at the position to be extinguished. The gas generating box is provided with a gas outlet, which is sealed and connected to the tail end of the piston mechanism. The aerosol gas generating agent in the gas generating box burns to generate high-pressure gas, which pushes the piston mechanism to squeeze the fire extinguishing agent in the storage cylinder and spray it out from the nozzle to extinguish the fire.

[0013] In other embodiments of the fire control system described in this specification, The gas generation box is equipped with a passive radio frequency internal temperature measurement tag. The transceiver transmits a radio frequency excitation signal to a predetermined range of the tower. The passive radio frequency internal temperature measuring tag receives the radio frequency excitation signal. The passive radio frequency internal temperature measuring tag senses and transmits the internal temperature signal in the gas generation box in real time. The transceiver receives the internal temperature signal and transmits it to the alarm controller. The alarm controller receives the external ambient temperature signal and the internal temperature signal, compares them with a preset threshold, and generates a warning signal and / or a fire alarm signal.

[0014] In some other embodiments of the fire control system described in this specification, the end of the nozzle is provided with a nozzle, the nozzle including a first spray group disposed at the root of the nozzle and a second spray group disposed away from the root of the nozzle; The first spray group includes a first spray hole and a second spray hole that are symmetrically arranged on both sides; The second spray group is provided with a third spray hole, a fourth spray hole and a fifth spray hole; the third spray hole and the fifth spray hole are symmetrically arranged on both sides of the fourth spray hole.

[0015] In some other embodiments of the fire control system described in this specification, the gas generating box includes: a box body and an initiator and an aerosol generating agent disposed in the box body, wherein the initiator is electrically connected to a thermistor connection wire assembly; The initiator ignites the gas-producing agent through the external heat transferred by the heat-sensitive connection wire group, providing the initial energy necessary for the combustion reaction; The gas produced by the combustion of the aerosol gas-generating agent is ejected from the gas outlet.

[0016] In some other embodiments of the fire control system described in this specification, the air outlet is funnel-shaped with a large inlet and a small outlet, converging high-pressure gas, and the outlet of the air outlet is connected to the tail end of the piston mechanism.

[0017] In other embodiments of the fire control system described in this specification, a nozzle is provided at the end of the nozzle pipe, and the nozzle includes a first spray group disposed at the root of the nozzle and a second spray group disposed away from the root of the nozzle; the first spray group and the second spray group spray at multiple angles in layers; The first spray group includes a first spray hole and a second spray hole that are symmetrically arranged on both sides; The second spray group is provided with a third spray hole, a fourth spray hole and a fifth spray hole; the third spray hole and the fifth spray hole are symmetrically arranged on both sides of the fourth spray hole.

[0018] In some other embodiments of the fire control system described in this specification, the spray center angle of the first spray hole, the second spray hole, the third spray hole, and the fifth spray hole is 60°; The center angle of the fourth injection hole is 90°.

[0019] In some other embodiments of the fire control system described in this specification, a dustproof membrane is provided between the sprinkler head and the nozzle.

[0020] In some other embodiments of the fire control system described in this specification, a leak-proof diaphragm is provided between the root of the nozzle and the head of the storage cylinder.

[0021] In some other embodiments of the fire control system described in this specification, the fire extinguishing agent contained in the storage cylinder occupies 2 / 3 to 4 / 5 of the total volume of the storage cylinder.

[0022] In some other embodiments of the fire control system described in this specification, the root of the nozzle is detachably connected to the head of the drug storage cylinder via threads.

[0023] In other embodiments of the fire control system described in this specification, The gas generating box includes: a box body and an initiator and an aerosol gas generating agent disposed in the box body, wherein the initiator is electrically connected to the thermistor connection wire group; The initiator ignites the gas-producing agent through the external heat transferred by the heat-sensitive connection wire group, providing the initial energy necessary for the combustion reaction; The gas produced by the combustion of the aerosol gas-generating agent is ejected from the gas outlet.

[0024] As can be seen from the above technical solution, addressing the technical problem of difficult maintenance of high-voltage fire-fighting equipment in the prior art, this utility model embodiment provides a fire control system for cable guide rings of wind turbine generator sets. This system solves the technical problems of low monitoring accuracy, lack of on-site fire extinguishing capability, high false alarm rate, and complex deployment and maintenance of cable guide rings in the prior art. It achieves layered and accurate temperature measurement of the cable guide rings on the wind turbine tower, integrated dual-temperature fire alarm judgment, and fire early warning. This utility model embodiment adopts a non-pressurized method, eliminating the pressure maintenance difficulties and leakage risks of traditional pressurized devices, improving the safety, reliability, and adaptability to different installation environments of the device, and achieving efficient and stable fire extinguishing function. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the system structure of a fire control system for a cable guide ring of a wind turbine generator set in one embodiment of the present invention; Figure 2 This is a schematic diagram showing the usage status of a fire control system for a cable guide ring of a wind turbine generator set in one embodiment of the present invention; Figure 3 This is a schematic diagram of the circuit structure of a fire control system for a cable guide ring of a wind turbine generator set in one embodiment of the present invention. Figure 4 This is a schematic diagram of the working process of a fire control system for a cable guide ring of a wind turbine generator set in one embodiment of the present invention; Figure 5 This is a schematic diagram of the power circuit structure of a fire control system for a cable guide ring of a wind turbine generator set in one embodiment of the present invention. Figure 6 This is a schematic diagram of the overall structure of a fire control system for a cable guide ring of a wind turbine generator set in one embodiment of the present invention; Figure 7 This is a longitudinal cross-sectional structural schematic diagram of a fire control system for a wind turbine generator cable guide ring according to another embodiment of the present invention. Figure 8 This is a longitudinal cross-sectional view of the gas generation box of a fire control system for a wind turbine generator cable guide ring, according to another embodiment of the present invention. Figure 9 for Figure 6 The illustrated embodiment is a schematic diagram of the longitudinal structure of a piston mechanism in a fire control system for a wind turbine generator cable guide ring. Figure 10 for Figure 6 The illustrated embodiment shows a side view of a sprinkler head structure for a fire control system used in a wind turbine generator cable guide ring. Figure 11 for Figure 6 The illustrated embodiment shows a front view of a sprinkler head in a fire control system for a wind turbine generator cable guide ring. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0028] like Figures 1 to 4This utility model embodiment provides a fire control system for a cable guide ring of a wind turbine generator set, including: a passive radio frequency external temperature measuring tag and a signal transceiver connected via radio frequency signals, and an alarm controller communicatively connected to the signal transceiver; the passive radio frequency external temperature measuring tag is located near the cable guide ring inside the wind turbine generator set tower, the passive radio frequency external temperature measuring tag receives radio frequency excitation signals sent by the signal transceiver, and the passive radio frequency external temperature measuring tag senses and transmits external ambient temperature signals in real time; the signal transceiver is connected to a radio frequency signal antenna, and the signal transmission and reception... The transceiver is installed inside the wind turbine tower. It transmits a radio frequency excitation signal within a predetermined range on the tower via a radio frequency signal antenna. The transceiver receives the ambient temperature signal sensed by the passive radio frequency external temperature sensor and transmits it to the alarm controller. The alarm controller receives the ambient temperature signal from the transceiver and compares it with a preset temperature threshold to generate a warning signal and / or a fire alarm signal, which is then transmitted to the host computer and the wind turbine controller of the wind turbine. The wind turbine controller executes corresponding shutdown or recovery control actions based on the warning signal and / or fire alarm signal. The following is a detailed description of a fire control system for a cable guide ring of a wind turbine provided by this embodiment of the invention.

[0029] In this embodiment, the transceiver is installed on the back of the yaw platform base of the wind turbine generator set, receiving the temperature signal transmitted by the passive RF external temperature measurement tag. The transceiver is connected to an RF signal antenna, and the wiring harness connecting the RF signal antenna is connected to the antenna's interface. The number and orientation of the RF signal antennas are selected according to the actual detection distance. Multiple transceivers can be installed within the wind turbine generator set's tower for each set of cable guide rings, as needed. The passive RF external temperature measurement tag is an RFID passive temperature sensing tag. The passive RF external temperature measurement tag can sense the temperature near each layer of cable guide rings within the wind turbine generator set's tower, as needed. The transceiver continuously transmits RF excitation signals outward through the RF signal antenna. After acquiring RF energy, the passive RF external temperature measurement tag collects the ambient temperature signal of the external space at the cable guide ring in real time, and transmits the ambient temperature signal value and the tag's unique number back to the transceiver via RF signal. For example, the passive RF external temperature measurement tag uploads temperature signals, including [device ID + real-time temperature + sensor online heartbeat code], to the signal transceiver every 1 second. The signal transceiver employs a multi-channel RF self-organizing network mechanism. Multiple sets of the passive RF external temperature measurement tags on the multi-layer guide rings of the wind turbine tower upload temperature signals in time slots, automatically assigning time slot IDs to avoid wireless signal conflicts and enabling parallel interactive data acquisition by multiple devices without the need for multiple wired communication buses. The signal transceiver adopts a layered bidirectional interactive communication architecture: the bottom layer uses RFID RF wireless bidirectional interaction (the signal transceiver sends excitation signals, and the passive RF external temperature measurement tags return temperature / heartbeat feedback). Each guide ring is equipped with an independent passive RF external temperature measurement tag with a unique ID code, which can individually identify the temperature of a single layer or single ring cable, eliminating the problems of temperature confusion and inability to distinguish hotspot locations across multiple guide rings.

[0030] like Figures 1 to 4As shown in the embodiment of this utility model, the signal transceiver includes: an RFID radio frequency transceiver chip and an access coupling circuit communicatively connected to the radio frequency signal antenna. The RFID radio frequency transceiver chip is communicatively connected to the access coupling circuit. The radio frequency signal antenna is an ASA-127127.1 model antenna with an input impedance of 50Ω. The coupling circuit uses a thin-film directional coupler CP0805A0902DW manufactured by AVX Corporation. The coupling circuit achieves isolation between transmitted and received signals, preventing backflow of transmitted signals from damaging the receiving path. The RFID radio frequency transceiver chip is a UHF RFID radio frequency transceiver chip (Impinj E710 architecture). Since the uplink signal from the passive radio frequency external temperature measurement tag is weak, it needs to be amplified. A signal amplification circuit is also communicatively connected between the RFID radio frequency transceiver chip and the access coupling circuit. The signal amplification circuit includes two stages of low-noise amplifiers (RFX8891) connected in series, used to amplify the weak uplink radio frequency signal returned by the passive radio frequency external temperature measurement tag. The signal transceiver also includes a clock circuit, a matched filter circuit, and an external filter circuit, all communicatively connected to the RFID radio frequency transceiver chip. The clock circuit provides a reference clock for the RFID radio frequency transceiver chip. The matched filter circuit (choke inductor + bypass capacitor) outputs a radio frequency carrier signal, which is transmitted via a coupling circuit and then through a radio frequency signal antenna. The external filter circuit filters out high-frequency components and noise from the error signal, smoothing the control signal to ensure loop performance and increase system stability. The external filter circuit includes a power decoupling network and a phase-locked loop (PLL loop filter RC network). The signal transceiver amplifies and processes the received external ambient temperature signal before transmitting it to the alarm controller, which then performs data processing.

[0031] like Figures 1 to 5As shown in this embodiment of the invention, the alarm controller includes: a main control MCU that is connected to the RFID radio frequency transceiver chip via an SPI bus, a signal communication circuit and a switch output circuit that are connected to the main control MCU. The main control MCU is a single-chip microcomputer GD32F030F4P6. The main control MCU is connected to the serial control bus (SCLK, MOSI, MISO, reset, status indication signal) of the RFID radio frequency transceiver chip via an SPI bus. The main control MCU configures the radio frequency chip parameters (transmit power, frequency modulation, modulation mode), parses the data returned by the RFID tag, and receives upper-layer instructions. The signal communication circuit is led out through the GPIO port of the main control MCU and divided into multiple channels. Each channel first passes through an RC current-limiting resistor and a high-speed optocoupler (isolation device) to achieve strong and weak current electrical isolation and block interference. After isolation, the signal is sent to the bus transceiver chip (typical layout of RS485 driver chip). The external communication port finally leads out an RS485 communication bus (A / B differential signal line, power, ground) as a data interaction interface between the reader / writer and the host computer (main control system). The switch output circuit includes a transistor auxiliary drive circuit to enable and control the RS485 transmission and reception direction. The switch output circuit also incorporates opto-isolation and surge protection circuits to ensure uninterrupted bidirectional communication under conditions of low-frequency tower vibration and lightning surges, improving communication reliability in harsh wind power operating conditions and overcoming the limitations of traditional unidirectional data transmission.

[0032] like Figures 1 to 4 As shown in this embodiment of the invention, the main control MCU of the alarm controller sends an RF control command to the RFID RF transceiver chip. The RFID RF transceiver chip executes the RF control command, generating a 915MHz UHF RF signal. This signal is then transmitted through a matched filter circuit and a coupling circuit via an RF signal antenna to wake up the passive RF external temperature measurement tag. Driven by the RF signal, the passive RF external temperature measurement tag uploads a temperature signal (device ID + real-time temperature + sensor online heartbeat code) to the transceiver every 1 second. After receiving the temperature signal, the RF signal antenna transmits it through a coupling circuit and a signal amplification circuit to the RFID RF transceiver chip. The RFID RF transceiver chip then demodulates the signal and transmits it to the MCU for processing via the SPI bus.

[0033] like Figures 1 to 4As shown in this embodiment of the invention, the main control MCU of the alarm controller reads the external ambient temperature signal and compares it with a preset temperature threshold to generate a warning signal and / or a fire alarm signal. For example, if the temperature signal exceeds the preset temperature threshold T1 (70°C), a high-temperature warning signal is generated; if the temperature signal exceeds the preset temperature threshold T2 (80°C), a fire alarm signal is generated. Generating a warning signal indicates a potential hazard warning signal is being pushed out during the stage of cable insulation softening and terminal heating but before fire, allowing maintenance personnel to climb the tower in advance to tighten terminals and replace damaged cables. A fire alarm signal indicates a fire is occurring, requiring maintenance personnel to monitor the unit's status and whether it needs to be shut down, thus cutting off the fire at its source. The warning signal and / or fire alarm signal and temperature signal are optically isolated, driven by RS485, and transmitted to the host computer via a differential bus, while simultaneously outputting to the wind turbine controller. The wind turbine controller performs a secondary confirmation based on this signal. For example, a warning signal requires the wind turbine to reduce its speed and frequency. A fire alarm signal requires the wind turbine to stop operating, and the wind turbine controller performs a protective action to stop the wind turbine operation based on the fire alarm signal. The wind turbine controller triggers a turbine shutdown by retracting the propeller and a power outage in the tower cable circuit. Operation is restored only after maintenance personnel inspect the wind turbine or confirm via video.

[0034] like Figure 5As shown in the embodiment of this utility model, it further includes a power supply circuit electrically connected to the signal transceiver. The power supply circuit includes: a transformer circuit, a rectifier circuit, a pre-stage filter and voltage regulator circuit, and a post-stage voltage regulator and filter circuit, which are electrically connected in sequence. The transformer circuit includes a transformer to step down the mains power and convert it into low-voltage AC power. The transformer circuit converts 220V AC power through transformer T1 into 9V low-voltage AC power, completing the initial voltage reduction and converting the high-voltage mains power into a low voltage that can be processed by subsequent circuits. The rectifier circuit includes a bridge rectifier to rectify the low-voltage AC power into unidirectional pulsating DC power. The rectifier circuit feeds the low-voltage AC power into a bridge rectifier D1 composed of four diodes, converting the alternating low-voltage AC power into unidirectional pulsating DC power. The pre-stage filter and voltage regulator circuit includes a three-terminal regulator to filter and output the pulsating DC power for the first time. The pre-stage filtering and voltage regulation circuit filters the rectified pulsating DC power through capacitors C1 and C2, significantly reducing voltage ripple and obtaining a smoother DC voltage, which is then fed into the input terminal of the voltage regulator chip. After passing through switch S1, C3 and C4 further filter the output voltage, optimizing the purity of the power supply. A power indicator circuit composed of R1 and LED D2 illuminates when power is applied, visually displaying the 5V output status, and finally outputting a stable 5V DC power supply VCC1. The post-stage voltage regulation and filtering circuit includes a voltage regulator chip, which performs a secondary filter on the power supply after the initial filtering process, outputting a DC power supply. The DC power is filtered by capacitors C5 and C6 and then fed into the voltage regulator chip U2 (AMS1117-3.3). C7 and C8 further filter the output voltage, ultimately outputting a stable 3.3V DC power supply VCC.

[0035] like Figures 6 to 11As shown in the embodiment of this utility model, the fire control system for the cable guide ring of a wind turbine generator set further includes a non-pressurized fire extinguishing component, which includes: a fire extinguishing mechanism 1 and a fire extinguishing triggering mechanism 2 disposed at the tail of the fire extinguishing mechanism 1; the fire extinguishing triggering mechanism 2 includes: a heat-sensitive connecting wire assembly 21 and an aerosol generating box 20, the aerosol generating box 20 containing an aerosol generating agent; the heat-sensitive connecting wire assembly 21 passes through the aerosol generating box 20 and is introduced into the aerosol generating box 20; the heat-sensitive connecting wire assembly 21 transmits heat information from outside the aerosol generating box 20 to the aerosol generating box 20, causing the gas inside the aerosol generating box 20 to... The aerosol-generating agent burns; the fire extinguishing mechanism 1 includes: a storage cylinder 10 for holding extinguishing agent 16, a piston mechanism 11 is provided at the tail end of the storage cylinder 10, and a nozzle 12 is provided at the head end of the storage cylinder 10; the nozzle 12 extends towards the guide ring to the position to be extinguished; the aerosol generating box 20 is provided with an outlet 200, the outlet is sealed and connected to the tail end of the piston mechanism 11, and the aerosol-generating agent in the aerosol generating box 20 burns to generate high-pressure gas, which pushes the piston mechanism 11 to squeeze the extinguishing agent 16 in the storage cylinder 10 and spray it out from the nozzle 12 to extinguish the fire.

[0036] like Figures 1 to 11As shown in this embodiment of the invention, the gas-generating box 20 includes: a box body and an initiator 22 and an aerosol gas-generating agent 24 housed within the box body. An outlet 200 is provided at the front end of the gas-generating box 20. The initiator 22 is electrically connected to a thermistor connection wire assembly 21. The initiator 22 provides the aerosol gas-generating agent with the initial energy necessary for the combustion reaction through heat. The thermistor connection wire assembly 21 can be a heat-conducting metal wire, a thermoplastic lead wire, or a thermistor cable. The gas generated after the aerosol gas-generating agent 24 burns is ejected from the outlet 200. For example, after the heat signal sensed by the thermistor connection wire assembly 21 is transmitted to the initiator 22, the electric initiator 22 uses an electric ignition head (heating resistor) as the initiating element to heat and ignite the aerosol gas-generating agent 24. The initiator 22 provides the aerosol gas-generating agent 24 with the initial energy necessary for the combustion reaction through heat. The gas-generating box 20 is also equipped with a feedback element, which is a disc-shaped non-resettable temperature-sensitive switch with a set operating temperature of 105°C. After the aerosol propellant is burned, the internal temperature of the chamber rises rapidly. Once the threshold is reached, the feedback element activates (engages or disconnects), and the feedback loop is either connected or disconnected. The signal for the feedback loop to connect or disconnect is a passive switching signal. The feedback element transmits the feedback signal indicating whether the fire extinguishing component has activated to the outside of the gas-generating box 20 via a feedback lead. The feedback signal is then transmitted through the feedback loop to an external fire alarm controller or other main control system. A removable silicone rubber plug 23 is provided at the rear of the gas-generating box 20. The thermal connection wire group 21 and the feedback lead pass through the silicone rubber plug 23 and are fixed therein, thus sealing the rear of the gas-generating box 20. The silicone rubber plug 23 effectively prevents moisture from entering the gas-generating box 20 and affecting the activation performance of the aerosol gas-generating agent. In this embodiment of the invention, to prevent the aerosol gas generator from becoming damp or cracking, a silicone coating layer 25 is provided on the outside of the aerosol gas generator 24. This ensures the dryness and uniformity of combustion of the aerosol gas generator 24, effectively preventing uneven combustion and subsequent explosion caused by cracking of the aerosol gas generator 24. Since the flue gas temperature after combustion of the aerosol gas generator 24 reaches 800–1200°C, to prevent the high-temperature, high-pressure gas generated by the combustion of the aerosol gas generator 24 from directly igniting surrounding combustibles and causing a secondary fire, a cooling material layer 201 is also coated on the inner side of the outlet 200. The cooling material layer 201 undergoes decomposition, dehydration, phase change, and endothermic reactions upon heating, while the physical filler undergoes convective heat transfer, reducing the temperature of the outlet 200 to below 100°C, preventing high-temperature ignition of items within the protected area. The cooling material layer 201 is divided into physical cooling filler and chemical coolant: chemical coolant (melamine 35% + ammonium polyphosphate 40% + potassium carbonate 20% + phenolic binder 5%): mainly absorbs heat, decomposes to produce gas, chemically inhibits combustion, and quenches sparks; physical cooling filler (ceramic particles): secondary heat exchange and cooling, physically blocks residues, prolongs the heat exchange contact time of flue gas, and enhances the cooling and filtration effect.Furthermore, an outlet 200 is provided at the front end of the gas generating box 20. The outlet 200 has a funnel-shaped structure with a large inlet and a small outlet. The outlet 200, with its large inlet and small outlet, gathers high-pressure gas and its outlet connects to the tail end of the piston mechanism 11. The funnel-shaped outlet 200 can gather high-pressure combustion gas and increase gas thrust; the outlet 200 is sealed to the piston mechanism 11 located at the tail end of the drug storage cylinder 10. The funnel-shaped outlet 200 can concentrate the high-pressure gas produced, increase the squeezing thrust of the piston mechanism 11, and enable the device to quickly start spraying after a fire occurs, improving the timeliness of fire extinguishing.

[0037] like Figures 1 to 11 As shown in this embodiment of the invention, a passive radio frequency (RF) internal temperature measuring tag 29 is installed inside the gas generating box. The signal transceiver transmits an RF excitation signal to a predetermined range. The passive RF internal temperature measuring tag 29 receives the RF excitation signal and senses the internal temperature signal inside the gas generating box in real time and transmits it. The signal transceiver receives the internal temperature signal and transmits it to the alarm controller. The alarm controller receives the external ambient temperature signal and the internal temperature signal and compares them with a preset threshold to generate a warning signal and / or a fire alarm signal. When the built-in temperature sensor continuously heats up to the preset temperature threshold T3 (90°C), the fire extinguishing component is automatically released. The alarm controller transmits the fire alarm signal to the fan controller and the host computer via communication. The fan controller triggers the unit to stop the propeller and disconnects the power to the tower cable circuit. If the passive RF internal temperature measuring tag 29 senses that the internal temperature signal inside the gas generating box is higher than the preset temperature threshold T1 (70°C) and the external ambient temperature signal is lower than the preset temperature threshold T2 (80°C), the alarm controller continuously generates a warning signal. The passive radio frequency internal temperature measurement tag 29 senses that the internal temperature signal in the gas generation box is higher than the preset temperature threshold T3 (90°C), and the external ambient temperature signal is higher than T2 (80°C), and the alarm controller continuously generates a fire alarm signal.

[0038] After the fire extinguishing component performs fire extinguishing discharge, the passive radio frequency external temperature measuring tag and the passive radio frequency internal temperature measuring tag automatically and continuously collect the ambient temperature. The alarm controller performs secondary verification and feedback. After the temperature drops back to the safe threshold T4 (60℃), a fire elimination feedback is generated and uploaded to the host computer. The alarm controller automatically uploads the fault work order. When the fan nacelle loses power and network connection, the non-pressurized fire extinguishing component independently completes all monitoring and fire extinguishing actions locally. After power and communication are restored, the alarm controller automatically re-uploads all offline historical data.

[0039] like Figures 6 to 9As shown in this embodiment of the invention, the side of the piston mechanism 11 facing the outlet 200 is a flat, circular pressure-bearing plane. The high-temperature, high-pressure gas generated by the combustion of the aerosol gas-generating agent acts evenly on the entire circular pressure-bearing plane, resulting in balanced force and allowing the piston mechanism 11 to slide forward smoothly without jamming. A fire extinguishing agent separator 110 is provided on the side of the piston mechanism 11 away from the outlet 200. The fire extinguishing agent separator 110 is made of polytetrafluoroethylene (PTFE) membrane, which normally prevents the high-temperature combustion gas in the gas-generating chamber from mixing with the fire extinguishing agent. For easy disassembly and maintenance, the outlet 200 of the gas-generating box 20 is detachably connected to the tail end of the storage cylinder 10 via threads. A sealing ring is provided between the outlet 200 of the gas-generating box 20 and the tail end of the storage cylinder 10 via threads.

[0040] like Figures 6 to 11As shown, in this embodiment of the invention, the nozzle 12 is made of a flexible, bendable tube, and the bending angle can be adjusted according to actual needs to ensure that the extinguishing agent is sprayed in a predetermined direction through the nozzle 12. To adapt to different fire extinguishing environments and different wind turbine units, the root of the nozzle 12 is detachably connected to the head of the storage cylinder 10 via a thread. A sealing ring is provided between the nozzle 12 and the head of the storage cylinder 10. The nozzle 12 can be disassembled and installed with specific lengths and bending angles according to the characteristics of different units. Furthermore, a nozzle head 13 is provided at the end of the nozzle 12. The nozzle head 13 includes a first spray group 138 disposed at the root of the nozzle head 13 and a second spray group 139 disposed away from the root of the nozzle head 13; the spray directions of the first spray group 138 and the second spray group 139 are within the same semi-circular fan-shaped area. The first spray group 138 includes a first spray hole 131 and a second spray hole 132 symmetrically arranged; the spray center angle of the first spray hole 131 and the second spray hole 132 is 60°. The second spray group 139 is provided with a third spray hole 133, a fourth spray hole 134, and a fifth spray hole 135. The third spray hole 133 and the fifth spray hole 135 are symmetrically arranged on both sides of the fourth spray hole 134; the center spray angle of the third spray hole 133 and the fifth spray hole 135 is 60°. The center spray angle of the fourth spray hole 134 is 90°. The spray fan-shaped areas of the first spray group 138 and the second spray group 139 are staggered along the radial circumference of the nozzle. The spray range of the first spray group 138 and the second spray group 139 effectively covers the interior of the guide ring by more than 120°. The first spray group 138 and the second spray group 139 spray in layers at multiple angles to eliminate blind spots in cable fire extinguishing. The third spray hole 133, the fourth spray hole 134, and the fifth spray hole 135 are arranged along the outer periphery of the nozzle 13. The multiple spray holes of the first spray group 138 and the second spray group 139 spray the extinguishing agent 16 in layers and at multiple angles. The extinguishing agent 16 can penetrate the gaps of densely bundled cables. Three units of the single guide ring are arranged in a ring to completely cover the entire cable area of ​​the inner ring of the guide ring, which solves the defects of traditional equipment that sprays on one side and has blind spots in extinguishing fire.

[0041] like Figures 6-11As shown, in this embodiment of the invention, a dustproof diaphragm 130 is provided between the nozzle 13 and the nozzle 12 to prevent dust from entering and clogging the nozzle. When high-pressure gas passes through the nozzle 12, it will break through the dustproof diaphragm 130, allowing the extinguishing agent 16 to be sprayed out smoothly. In this embodiment of the invention, a leak-proof diaphragm 102 is provided between the root of the nozzle 12 and the head of the storage cylinder 10. The leak-proof diaphragm 102 prevents the extinguishing agent 16 from leaking while effectively increasing the kinetic energy of the device during spraying. When the extinguishing agent 16 in the storage cylinder 10 reaches its vaporization point due to the high temperature of the external fire, the excessive pressure in the storage cylinder 10 will break through the leak-proof diaphragm 102 and spray out from the nozzle 12. At room temperature, if the extinguishing agent 16 in the storage cylinder 10 is filled too full, the excessive vaporization pressure of the extinguishing agent 16 in the storage cylinder 10 may rupture the leak-proof diaphragm 102, causing leakage. To avoid this problem, the extinguishing agent 16 in the storage cylinder 10 is filled to 2 / 3-4 / 5 of the total volume of the storage cylinder 10. Even if a small amount of extinguishing agent 16 vaporizes in the storage cylinder 10, perfluorohexanone begins to gradually vaporize at 30°C, and the reserved space in the storage cylinder 10 can effectively slow down the pressure filling, preventing excessive pressure from rupturing the leak-proof diaphragm 102 and causing leakage. In this embodiment of the invention, the extinguishing agent 16 may be perfluorohexanone (PERFLUORO). Of course, it is understood that this embodiment of the invention is not limited to this, and other extinguishing agents with equivalent extinguishing performance can still be used. The leak-proof diaphragm 102 and the dustproof diaphragm 130 are made of polyethylene, and the sealing ring is made of nitrile rubber. The drug storage cylinder 10 eliminates the high-pressure gas storage chamber, and the long-term low-frequency vibration of the fan will not cause sealing loosening or drug pressure loss and leakage; there is no need for annual high-altitude pressure resistance testing and gas replenishment operations.

[0042] like Figures 1 to 11The working process of the fire control system for the cable guide ring of a wind turbine generator set, as shown in this embodiment of the present invention, is executed according to the following procedure: The fire control system for the cable guide ring of the wind turbine generator set is deployed inside the wind turbine generator set tower (multiple sets of passive radio frequency external temperature measuring tags and passive radio frequency internal temperature measuring tags can be deployed according to actual needs to achieve 360° blind-spot-free detection of the inner ring of the guide ring). The signal transceiver transmits radio frequency excitation signals to a predetermined range. The passive radio frequency external temperature measuring tag receives the radio frequency excitation signals and senses and transmits the external ambient temperature signals in real time. The signal transceiver receives the external ambient temperature signals and transmits them to the alarm controller. The alarm controller receives the external ambient temperature signals and compares them with a preset threshold to generate a warning signal and / or a fire alarm signal, and transmits them to the host computer and the wind turbine controller of the wind turbine generator set. The wind turbine controller performs protection actions according to the warning signal and / or fire alarm signal. At the same time, multiple sets of non-pressurized fire extinguishing components are deployed inside the wind turbine generator set tower. The nozzle 12 of suitable length is selected, and the nozzle 12 is bent and twisted to correspond to the easily worn parts of the cable at the guide ring. At room temperature, the storage cylinder 10 is in a non-pressurized state, eliminating the risk of high-pressure gas leakage or pressure loss. The passive radio frequency external temperature sensor monitors the cable surface temperature in real time. The thermally sensitive connecting wire group 21 is wound around the cable surface within the cable guide ring. The passive radio frequency internal temperature sensor 29 senses and transmits the internal temperature signal within the gas-generating box in real time. The signal transceiver receives the internal temperature signal and transmits it to the alarm controller. When a fire occurs inside the generator tower due to cable wear and overheating, resulting in a short circuit, the large amount of heat generated by the fire is introduced into the gas-generating box 20 through the thermally sensitive connecting wire group 21. The igniter ignites the gas-generating agent through the external heat transferred by the thermally sensitive connecting wire group 21; or the igniter receives the fire alarm electrical signal output by the alarm controller and ignites the gas-generating agent. Simultaneously, the large amount of heat generated by the fire also heats the storage cylinder 10, causing the fire extinguishing agent 16 contained within the storage cylinder 10 to vaporize. At the same time, the aerosol gas-generating agent 24 within the gas-generating box is fully combusted. The gas produced by the combustion of the aerosol gas-generating agent is ejected from the outlet. The high-pressure gas generated by the combustion of the aerosol gas-generating agent 24 in the gas-generating box 20 pushes the piston mechanism 11 to compress the fire extinguishing agent 16 contained in the storage cylinder 10, which is then ejected from the nozzle 12 to extinguish the fire at the predetermined location. The fire extinguishing agent 16 is evenly dispersed into the gaps of the bundled cables, rapidly absorbing heat, isolating oxygen, and quickly extinguishing the fire source. It completely extinguishes open flames on the cables within 3 seconds, leaving no solid residue or high-temperature burn marks on the cable surface after spraying. Unlike aerosol high-temperature burning and dry powder dust accumulation, perfluorohexanone completely evaporates after atomization, leaving no solid residue adhering to the cables. After accidental triggering, there is no need to stop the unit to clean the cables, avoiding economic losses due to unit downtime.

[0043] In summary, the fire control system for wind turbine cable guide rings provided by this utility model uses passive radio frequency temperature tags for temperature measurement, eliminating the need for wiring and power supply. These tags are layered near each layer of cable guide rings, enabling layered and refined temperature monitoring. The system is simple to deploy, requires minimal maintenance, and offers high stability. It completely solves the problems of traditional linear temperature-sensing cables and platinum resistance sensors, which suffer from line breakage, joint corrosion, and short-circuit failure due to long-term tower vibration and cable twisting. The equipment requires no long-term maintenance, significantly reducing the frequency of high-altitude maintenance and labor costs in wind farm operations. It uses a dual-dimensional approach of external ambient temperature and internal temperature of the fire extinguishing components to comprehensively determine fire alarms, greatly reducing false alarms and missed alarms caused by temperature misjudgments, resulting in more accurate fire detection. The system uses non-pressurized perfluorohexanone fire extinguishing components, eliminating the risk of high-pressure container leakage. The nozzles can be screwed and replaced according to actual conditions, adapting to various wind turbine guide rings. The diaphragm structure enhances pressure resistance, leakage resistance, and vibration performance while also improving dust resistance. The device is compact and easy to install.

[0044] Finally, it should be noted that in the description of this utility model, the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" 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.

[0045] Furthermore, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations, nor should they be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by a statement does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal interconnected interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0046] Numerous specific details are set forth in this specification. However, it is understood that embodiments of this utility model can be practiced without these specific details. In the description of this specification, references to terms such as “one embodiment,” “some embodiments,” “example,” “specific example,” or “some examples,” etc., 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 utility model. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification. Similarly, it should be understood that, in order to streamline the disclosure of this utility model and aid in the understanding of one or more aspects of the various utility models, in the above description of exemplary embodiments of this utility model, various features of the utility model are sometimes grouped together in a single embodiment, figure, or description thereof. However, this method of disclosure should not be interpreted as reflecting an intention that the claimed utility model requires more features than are expressly recited in each claim. Rather, as reflected in the claims, an aspect of the utility model lies in fewer than all the features of the single embodiment disclosed above. Therefore, the claims following the specific embodiments are hereby expressly incorporated into those specific embodiments, wherein each claim itself is a separate embodiment of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiments or examples. It should be noted that, without conflict or contradiction, the embodiments in this application and the specific features, structures, materials, or characteristics described therein can be combined with each other. The present invention is not limited to any single aspect, nor to any single embodiment, nor to any combination and / or substitution of these aspects and / or embodiments. Furthermore, without contradiction, those skilled in the art can use each aspect and / or embodiment of the present invention alone or in combination with one or more other aspects and / or embodiments thereof.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A fire control system for a guide ring in a wind turbine generator cable, characterized in that, include: The passive radio frequency external temperature measurement tag and signal transceiver communicate via radio frequency signals, and also includes an alarm controller that communicates with the signal transceiver. The passive radio frequency external temperature measurement tag is located near the cable guide ring inside the wind turbine tower. The passive radio frequency external temperature measurement tag receives the radio frequency excitation signal sent by the signal transceiver. The passive radio frequency external temperature measurement tag senses the external ambient temperature signal in real time and sends it. The transceiver is connected to a radio frequency signal antenna and is installed inside the wind turbine tower. The transceiver transmits radio frequency excitation signals to a predetermined range on the tower through the radio frequency signal antenna. The transceiver receives the external ambient temperature signal sensed by the passive radio frequency external temperature measurement tag and transmits it to the alarm controller. The alarm controller receives the external ambient temperature signal from the signal transceiver and compares it with a preset temperature threshold to generate an early warning signal and / or a fire alarm signal, and transmits it to the host computer and the wind turbine controller of the wind turbine generator set; the wind turbine controller performs corresponding shutdown or recovery control actions according to the early warning signal and / or fire alarm signal.

2. The fire control system according to claim 1, characterized in that, The signal transceiver includes: An RFID radio frequency transceiver chip and an access coupling circuit that is communicatively connected to a radio frequency signal antenna, wherein the RFID radio frequency transceiver chip is communicatively connected to the access coupling circuit; The RFID radio frequency transceiver chip is also communicatively connected to the access coupling circuit, and the circuit also includes a clock circuit, a matched filter circuit, and an external filter circuit that are communicatively connected to the RFID radio frequency transceiver chip. The alarm controller includes: The main control MCU is connected to the RFID radio frequency transceiver chip via a bus communication, and the signal communication circuit and switch output circuit are connected to the main control MCU.

3. The fire control system according to claim 1, characterized in that, It also includes a power supply circuit electrically connected to the signal transceiver, the power supply circuit comprising: The transformer circuit, rectifier circuit, pre-stage filter and voltage regulator circuit and post-stage voltage regulator and filter circuit are electrically connected in sequence. The transformer circuit includes a transformer for stepping down the mains power and converting it into low-voltage AC power; The rectifier circuit includes a bridge rectifier for rectifying low-voltage AC power into unidirectional pulsating DC power. The pre-stage filtering and voltage regulation circuit includes a three-terminal regulator, which is used to filter and output the pulsating DC power for the first time. The subsequent voltage regulation and filtering circuit includes a voltage regulator chip, which is used to perform secondary filtering of the power supply after the initial filtering process and output DC power.

4. The fire control system according to claim 1, characterized in that, It also includes a non-pressurized fire extinguishing assembly disposed on the cable guide ring, which includes: a fire extinguishing mechanism and a fire extinguishing triggering mechanism disposed at the tail of the fire extinguishing mechanism; The fire extinguishing triggering mechanism includes: a heat-sensitive connecting wire assembly and a gas-generating box, wherein the gas-generating box contains an aerosol gas-generating agent; one end of the heat-sensitive connecting wire assembly is located near the cable guide ring inside the wind turbine tower, and the other end of the heat-sensitive connecting wire assembly passes through the gas-generating box and is introduced into the gas-generating box; the heat-sensitive connecting wire assembly transfers heat information from outside the gas-generating box to the gas-generating box, causing the aerosol gas-generating agent inside the gas-generating box to burn; The fire extinguishing mechanism includes: a storage cylinder for holding extinguishing agents, a piston mechanism at the tail end of the storage cylinder, and a nozzle at the head end of the storage cylinder; the nozzle extends toward the guide ring at the position to be extinguished. The gas generating box is provided with a gas outlet, which is sealed and connected to the tail end of the piston mechanism. The aerosol gas generating agent in the gas generating box burns to generate high-pressure gas, which pushes the piston mechanism to squeeze the fire extinguishing agent in the storage cylinder and spray it out from the nozzle to extinguish the fire.

5. The fire control system according to claim 4, characterized in that, The gas generation box is equipped with a passive radio frequency internal temperature measurement tag. The transceiver transmits a radio frequency excitation signal to a predetermined range of the tower. The passive radio frequency internal temperature measuring tag receives the radio frequency excitation signal. The passive radio frequency internal temperature measuring tag senses and transmits the internal temperature signal in the gas generation box in real time. The transceiver receives the internal temperature signal and transmits it to the alarm controller. The alarm controller receives the external ambient temperature signal and the internal temperature signal, compares them with a preset threshold, and generates a warning signal and / or a fire alarm signal.

6. The fire control system according to claim 4, characterized in that, The nozzle is provided with a nozzle at its end, and the nozzle includes a first spray group disposed at the root of the nozzle and a second spray group disposed away from the root of the nozzle; the first spray group and the second spray group spray in layers at multiple angles; The first spray group includes a first spray hole and a second spray hole that are symmetrically arranged on both sides; The second spray group is provided with a third spray hole, a fourth spray hole and a fifth spray hole; the third spray hole and the fifth spray hole are symmetrically arranged on both sides of the fourth spray hole.

7. The fire control system according to claim 6, characterized in that, A dustproof membrane is provided between the nozzle and the spray pipe; A leak-proof diaphragm is provided between the root of the nozzle and the head of the drug storage cylinder.

8. The fire control system according to claim 4, characterized in that, The fire extinguishing agent contained in the storage cylinder occupies 2 / 3 to 4 / 5 of the total volume of the storage cylinder.

9. The fire control system according to claim 4, characterized in that, The root of the nozzle is detachably connected to the head of the drug storage cylinder via a thread; The gas outlet of the gas generating box is detachably connected to the tail end of the medicine storage cylinder via a thread.

10. The fire control system according to claim 4, characterized in that, The gas generating box includes: a box body and an initiator and an aerosol gas generating agent disposed in the box body, wherein the initiator is electrically connected to the thermistor connection wire group; The initiator ignites the gas-producing agent through the external heat transferred by the heat-sensitive connection wire group, providing the initial energy necessary for the combustion reaction; The gas produced by the combustion of the aerosol gas-generating agent is ejected from the gas outlet.

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