Peripheral protection unit of Beidou electric power communication equipment

Abstract

A peripheral protection unit of Beidou power communication equipment belongs to the technical field of power communication equipment, and aims to solve the problems that smoke generated by smoldering at the initial stage of an electrical fire is easily limited by a closed cabinet body due to continuous oxygen supply of an air inlet and an air outlet of cabinet type equipment of a Beidou power distribution network communication device, and peripheral monitoring is difficult to perceive in time; the power communication equipment cabinet comprises a power communication equipment cabinet and a protection unit, the power communication equipment cabinet is provided with an air inlet and an air outlet which are distributed up and down, a closing plate is arranged outside the power communication equipment cabinet, and the two plates are controlled by a switch closing device in a linkage mode; the protection unit comprises a monitoring device, a closed vacuumizing device, a reminding device, a monitoring device and a controller, and the controller is used for controlling all the devices in a linkage mode and electrically connected with the master control equipment through wireless transmission. According to the invention, the external protection unit carries out early-stage accurate monitoring, active fire control and accurate cross validation positioning, and equipment state transmission and remote inspection are realized by using the Beidou satellite.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of electric power communication equipment, and particularly relates to an external device protection unit of a Beidou electric power communication equipment. BACKGROUND

[0002] With the in-depth application of the Beidou satellite navigation system in various industries, the role of the Beidou satellite navigation system in the electric power field is increasingly prominent. The Beidou electric power communication equipment has become a crucial access communication mode in the electric power information collection system in China by virtue of the Beidou satellite communication function, and provides reliable communication support for the stable operation of the electric power industry. At present, the electric power Beidou terminal equipment is developing towards integration and miniaturization, integrates the Beidou communication system into the electric power terminal equipment, and is installed outdoors for electric power communication, thus becoming a mainstream trend of the electric power technology development.

[0003] In the prior art, a power distribution network communication device of a Beidou satellite is disclosed in application No. 201910341519.9. Each data processing transfer monitoring terminal corresponds to a plurality of power distribution electric power data collection node terminals, and each node terminal and the transfer monitoring terminal are connected in a wireless manner by using the Beidou satellite for communication. A remote monitoring center is in communication connection with each data processing transfer monitoring terminal, can monitor each power distribution network at any time, ensures the reliability of monitoring and data transmission by using the Beidou satellite communication, and can also realize positioning of a fault position.

[0004] However, the power distribution network communication device of the Beidou satellite has certain defects. Since the equipment is integrated in a cabinet, and the cabinet is usually provided with an air inlet and an air outlet to ensure heat dissipation of the equipment, in the actual operation process, the cabinet interior may catch fire due to various conditions such as line aging, short circuit, equipment fault overheating and the like. The initial stage of the electric fire is mostly "smoldering" (such as line insulation layer overheating, component short circuit fire), a large amount of smoke is generated at this stage, and then obvious temperature rise occurs. However, due to the closed characteristics of the cabinet door, the smoke generated by the initial fire is limited in the cabinet interior, and the monitoring equipment of the external device cannot timely detect the fire; meanwhile, the existence of the air inlet and the air outlet also continuously provides oxygen for the internal fire, and accelerates the spread of the fire. Under normal circumstances, the monitoring equipment can only monitor the fire when the fire is large and spreads to the outside of the cabinet, which leads to the fact that the ignition point cannot be accurately obtained, and the power supply cannot be cut off in time. In this way, not only the equipment will suffer more serious damage and cause greater economic loss, but also the fire may further expand, and even threatens the safety of the surrounding environment and personnel, and there is a great safety hazard. In view of the above problems, an external device protection unit of a Beidou electric power communication equipment is provided. SUMMARY

[0005] The application aims to provide a peripheral protection unit of a Beidou power communication device, which is used to solve the problem that the smoke generated by the initial electrical fire of the cabinet-type device of the existing Beidou power distribution network communication device is easily confined by the closed cabinet body, and the external monitoring cannot timely detect the fire, and the fire is often found to spread to the outside, which leads to the problem that the power supply cannot be timely cut off, and the device is easily damaged, the economic loss is easily expanded, and even the surrounding environment and personnel safety are threatened.

[0006] To achieve the above-mentioned purpose, the application provides the following technical scheme. A peripheral protection unit of a Beidou power communication device, comprising a power communication device cabinet and a protection unit, a side outer wall of the power communication device cabinet is provided with an air inlet at the bottom, and the other side outer wall is provided with an air outlet at the top, and the air inlet and the air outlet are both provided with a closing plate outside, and the two closing plates are connected through a closing and opening device; The protection unit comprises a monitoring device, a closing and vacuumizing device, a reminding device, a monitoring device and a controller, the controller is installed in a waterproof control box at the bottom of the power communication device cabinet, the controller is connected with an external power supply device through wires, the monitoring device is electrically connected with the controller, and is used to monitor the fire in the power communication device cabinet and feed back a signal to the controller, the closing and vacuumizing device is electrically connected with the controller, and is used to receive an instruction of the controller and perform an air extraction operation, the reminding device is electrically connected with the controller, and is used to issue a fire warning and assist positioning, the monitoring device is electrically connected with the controller, and is used to identify warning information and assist positioning, and the controller is used to control the devices in linkage, and is electrically connected with a general control device through wireless transmission, and is used to send an instruction to the general control device.

[0007] Further, the monitoring device comprises a smoke sensor, the smoke sensor is arranged in the center area of the top of the power communication device cabinet, the smoke sensor is electrically connected with the controller through wires, and the power supply of the smoke sensor is independent of the external power supply of the power communication device cabinet, so that the smoke sensor can continue to monitor after the power supply in the cabinet is cut off.

[0008] Further, the closing and opening device comprises a limiting frame, a driving motor, a shaft rod, a closing driving plate and a driving rod, the limiting frame is a double-layer hollow structure, is fixed to the outer wall of the power communication device cabinet outside the air inlet and the air outlet, the bottom of the limiting frame at the air inlet is provided with a first slot, and the top of the limiting frame at the air outlet is provided with a second slot, and the closing plate is slidably covered on the air inlet and the air outlet through the two slots respectively. The driving motor is fixed inside the power communication equipment cabinet, and its power supply is independent of the external power supply of the power communication equipment cabinet; the closing driving plate is in an inclined structure and located at the rear side of the power communication equipment cabinet; the middle part of the closing driving plate is connected with the output end of the internal driving motor through a shaft rod penetrating the rear side shell of the power communication equipment cabinet; sliding grooves are formed at both ends of the closing driving plate, and the closing plate is connected with the sliding grooves through a driving rod penetrating and sliding, so as to realize the synchronous closing of the air inlet and the air outlet.

[0009] Further, the closing vacuumizing device comprises an air pump and a smoke exhaust pipe; the air pump is located at the bottom of the waterproof plate on the top of the power communication equipment cabinet, and the air inlet of the air pump is connected with the top of the power communication equipment cabinet; the power supply of the air pump is independent of the external power supply of the power communication equipment cabinet; the smoke exhaust pipe is installed on the top of the waterproof plate, and rainproof top plates are connected with the top plates on both sides of the smoke exhaust pipe to form a smoke exhaust channel.

[0010] Further, the reminding device comprises a pipeline, an audible and visual alarm and red iron oxide powder; one-way valves are arranged at both ends of the pipeline; the red iron oxide powder is arranged in the pipeline between the two one-way valves; the pipeline inlet is connected with the outlet of the air pump; the pipeline outlet is connected with the bottom of the smoke exhaust pipe; guide vanes are arranged in the pipeline close to the air pump, so as to make the smoke fully contact and mix with the red iron oxide powder.

[0011] Further, the audible and visual alarm is installed on the top of one side of the power communication equipment cabinet and connected with the controller through wires, and its power supply is independent of the external power supply of the power communication equipment cabinet; the audible and visual alarm can continuously issue audible and visual warnings after the power supply of the power communication equipment cabinet is cut off.

[0012] Further, the monitoring device comprises a monitoring camera; the monitoring camera is installed on the obliquely upper side of the power communication equipment cabinet through an adjustable support, and the included angle between the lens axis and the outlet of the smoke exhaust pipe is 30-60°; the monitoring camera is connected with the controller in signal, and used for identifying the colored smoke exhausted from the smoke exhaust pipe and transmitting image data; the power supply of the monitoring camera is independent of the external power supply of the power communication equipment cabinet, so as to ensure that the monitoring camera can continuously work after the power supply of the power communication equipment cabinet is cut off; the controller cross-verify the camera data and the smoke sensor signal, locates the on-fire power communication equipment cabinet and sends instructions to the general control equipment.

[0013] Further, the protection unit further comprises a photographing module, a picture compression processing module and a short message communication module, the photographing module is used for shooting the image around the equipment cabinet, the picture compression processing module is used for compressing the image, and the short message communication module is connected with the controller; the modules are powered by a system independent of the external power supply of the power communication equipment cabinet, can transmit the equipment state, meteorological data and fire alarm information through the Beidou satellite, realize remote monitoring, utilize the high-precision positioning function of the Beidou satellite communication, automatically record the accurate coordinate information of the shooting position when the photographing module shoots the image around the equipment cabinet, and transmit the coordinate and the image data to the remote monitoring center through the short message communication module, so that the staff can quickly locate the geographical position of the faulty equipment and improve the emergency response speed.

[0014] Further, the controller is connected with the total control device signal, can cross-verify the smoke sensor signal and the monitoring camera image, locate the fire power communication equipment cabinet and send the cut-off instruction to the total control device; the power supply of the controller is independent of the external power supply of the power communication equipment cabinet, so that the instruction sending is not affected by the state of the power supply in the cabinet.

[0015] Further, when the total control device responds to the instruction of the controller, only the power supply of the power communication equipment installed in the power communication equipment cabinet is cut off, and the power supply of the closing switch device, the smoke sensor, the closed vacuum device, the sound-light alarm and the monitoring camera is ensured by an independent system and is not affected by the cut-off of the power supply in the cabinet, so that the protection function continuously operates, and the total control device not only cuts off the power communication equipment power supply of the cabinet body after receiving the cut-off instruction, but also sends a warning signal to the surrounding power equipment, prompts the possible fire risk of the surrounding equipment, takes precautions in advance, prevents the fire from spreading to the surrounding equipment, and ensures the safe and stable operation of the entire power system.

[0016] Compared with the prior art, the present application has the following advantages: 1. The peripheral protection unit of the present Beidou power communication equipment realizes early and accurate fire monitoring, solves the problem of late discovery of hidden fire, and solves the defect that the initial smoke is difficult to detect due to the closed cabinet body in the prior art. The present application sets a smoke sensor in the center area of the top of the cabinet, can capture the fire signal at the first time in the "smoldering" stage of the electrical fire, compared with the traditional external monitoring mode, the response time is advanced by several minutes to several tens of minutes, avoids the passive situation that the fire is discovered after the fire spreads, and greatly reduces the risk of equipment damage.

[0017] 2. The application actively blocks the spread of fire conditions and improves the initial fire control capability. The closing device drives the closing plate to synchronously close the inlet and outlet, and the air extraction pump extracts air to form a low-pressure environment in the cabinet, thereby physically cutting off the oxygen supply and suppressing combustion. Meanwhile, the combination of the exhaust pipe and the red iron oxide powder allows the fire signal to be quickly transmitted through colored smoke, solving the problem of difficulty in feeding back the fire condition outside the closed cabinet.

[0018] 3. The application innovatively adopts a cross-verification mechanism of smoke sensor signals and monitoring camera images, combined with the high-precision positioning function of Beidou short message communication, to accurately lock the location of the on-fire cabinet. Compared with the existing technology, the application can quickly send a cut-off instruction to the total control device, avoiding misoperation or missed operation, and at the same time, the total control device sends a warning to the surrounding equipment to form a regional protection network.

[0019] 4. In view of the defect that the existing technology is prone to failure due to power failure under fire conditions, the smoke sensor, closing device, and air extraction pump core components in the application all use a power supply system independent of the cabinet power supply, and the controller is installed in a waterproof control box outside the cabinet, ensuring that the protection function does not be interrupted after the cabinet power is cut off. This design solves the pain point of the failure of traditional equipment protection under fire conditions and improves the reliability in extreme situations.

[0020] 5. The application uses the Beidou satellite to realize device state transmission and remote inspection in a public network-free environment through the short message communication module and the photographing module, making up for the deficiency of the existing technology that can only achieve basic monitoring and lacks outdoor complex environment adaptation capability. It is especially suitable for power communication equipment in remote areas, providing real-time data support for operation and maintenance personnel and reducing the cost of manual inspection. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is the isometric view of the power communication equipment cabinet of the application; Figure 2 is a structural schematic view of the closing device of the application; Figure 3 is a schematic view of the connection structure of the air extraction pump and the exhaust pipe of the application; Figure 4 is a schematic view of the pipeline structure of the application; Figure 5 is the Figure 3 is an enlarged view of area A in the middle of the application; Figure 6 is a side sectional view of the power communication equipment cabinet of the application; Figure 7 is a whole control block diagram of the application; Figure 8 is a working flow module block diagram of the protection unit of the application.

[0022] In the figure: 1, power communication equipment cabinet; 11, air inlet; 12, air outlet; 13, closing plate; 14, photographing module; 15, picture compression processing module; 16, short message communication module; 2, switch closing device; 20, limiting frame; 201, first inlet slot; 202, second inlet slot; 21, driving motor; 22, shaft; 23, closing driving plate; 231, sliding groove; 24, driving rod; 3, pipeline; 30, one-way valve; 31, audible and visual alarm; 32, red iron oxide powder; 33, guide vane; 4, smoke sensor; 5, monitoring camera; 7, air pump; 72, smoke exhaust pipe; 721, vertical plate; 722, rainproof roof. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0024] In the present application, each device adopts a conventional model in the prior art, and the control mode is controlled by a controller. The control circuit of the controller can be realized by simple programming by those skilled in the art, and belongs to the common knowledge in the art. Therefore, the present application will not be explained in detail.

[0025] Please refer to the drawings Figure 1 , Figure 2 , Figure 6 - Figure 8As shown, a kind of peripheral protection unit of beidou power communication equipment includes power communication equipment cabinet 1 and protection unit, power communication equipment cabinet 1 is the cabinet for outdoor use, with good waterproof, anticorrosive ability, power communication equipment cabinet 1 one side outer wall lower portion is equipped with air inlet 11, the other side outer wall upper portion is equipped with air outlet 12, air inlet 11 and air outlet 12 outside are equipped with closure plate 13, two closure plates 13 are connected by switch closing device 2, synchronous opening or closing can be realized. Protection unit includes monitoring device, closed vacuum device, reminding device, monitoring device and controller, controller is used for linkage control each device, and is electrically connected with total control equipment by wireless transmission, for sending instruction to total control equipment. Controller is installed in the waterproof control box of power communication equipment cabinet 1 bottom independent, and controller is connected with external power supply equipment by wire, ensure that with the power supply isolation of equipment in cabinet, guarantee continuous work when fire. Monitoring device is electrically connected with controller, for monitoring fire in power communication equipment cabinet 1 and feedback signal to controller;Monitoring device includes smoke sensor 4, smoke sensor 4 is arranged in the top center area in power communication equipment cabinet 1, and smoke sensor 4 is electrically connected with controller by wire, and its power supply is independent of the power supply outside power communication equipment cabinet 1, ensure that still can continuously monitor after the power supply in cabinet is cut off, for the characteristics of electrical fire "smoldering before heating", smoke sensor can quickly capture signal in the early stage of fire (only produce smoke without obvious heating), solve the problem of existing equipment dependence on external monitoring, discovery lag, using the power supply design independent of the power supply in cabinet, even if the power supply in cabinet is cut off, still can continuously monitor fire change, avoid monitoring interruption.

[0026] The switch closing device 2 is used for closing the air inlet 11 and the air outlet 12 to prevent external oxygen from entering the cabinet, and the switch closing device 2 comprises a limiting frame 20, a driving motor 21, a shaft rod 22, a closing driving plate 23 and a driving rod 24. The limiting frame 20 is in a double-layer hollow structure and is fixed to the outer wall of the power communication equipment cabinet 1 outside the air inlet 11 and the air outlet 12. The bottom of the limiting frame 20 at the air inlet 11 is provided with a first inlet slot 201, and the top of the limiting frame 20 at the air outlet 12 is provided with a second inlet slot 202. The closing plate 13 covers the air inlet 11 and the air outlet 12 through the two slots respectively. The driving motor 21 is fixed inside the power communication equipment cabinet 1, and its power supply is independent of the external power supply of the power communication equipment cabinet 1. The closing driving plate 23 is in an inclined structure and is located at the rear side of the power communication equipment cabinet 1. The middle part of the closing driving plate 23 penetrates the rear side shell of the power communication equipment cabinet 1 through the shaft rod 22 and is connected with the output end of the internal driving motor 21. The two ends of the closing driving plate 23 are provided with sliding grooves 231, and the closing plate 13 is connected with the sliding grooves 231 through the driving rod 24. The air inlet 11 and the air outlet 12 are synchronously closed. When the smoke sensor 4 detects a fire in the cabinet, the smoke sensor 4 transmits the detected data to the controller. After receiving the data, the controller processes the data and starts the driving motor 21. The driving motor 21 drives the closing driving plate 23 to rotate forward through the shaft rod 22. At the same time, the driving rod 24 moves along the sliding grooves 231 of the closing driving plate 23 and synchronously pushes the two closing plates 13 to slide along the inlet slots of the limiting frame 20, so as to seal and cover the air inlet 11 and the air outlet 12. The air inlet 11 and the air outlet 12 are synchronously closed through the mechanical linkage structure, the air leakage caused by one-side closing is avoided, the sealing performance is improved, the driving motor 21 is independently powered, and the edge of the closing plate 13 is tightly matched with the limiting frame 20, so that the cabinet will not be caused by power failure or mechanical jam failure in the fire.

[0027] When the fire is caused by line aging, short circuit, etc. in the power communication equipment cabinet 1, the smoke generated in the initial "smoldering" stage will be captured by the smoke sensor 4 arranged in the center area of the top of the cabinet. The smoke sensor 4 transmits the detected smoke signal to the controller in real time through the wire. After receiving the signal of the smoke sensor 4, the controller (installed in the waterproof control box at the bottom of the cabinet, powered by external power supply) immediately processes the data, confirms the fire risk, and then starts the linkage control, sends the closing instruction to the switch closing device 2, and synchronously activates the closing vacuum device, the reminding device and the monitoring device. After receiving the instruction, the drive motor 21 (independent power supply) of the switch closing device 2 starts, drives the inclined closing drive plate 23 at the rear side of the cabinet to rotate forward through the shaft 22, and in the process of rotation, the closing plate 13 moves along the sliding groove 231 of the closing drive plate 23 through the drive rod 24, so that the two closing plates 13 slide along the first inlet slot 201 of the limiting frame 20 at the air inlet 11 and the second inlet slot 202 of the limiting frame 20 at the air outlet 12 respectively, and finally synchronously seal and cover the air inlet 11 and the air outlet 12, blocking the outside oxygen from entering the cabinet.

[0028] Please refer to the attached Figure 1 、 Figure 3 - Figure 8As shown, the closed vacuum device is electrically connected with the controller for receiving the controller instructions and performing the air extraction operation; the closed vacuum device includes an air extraction pump 7 and a smoke exhaust pipe 72; the air extraction pump 7 is located at the bottom of the waterproof plate on the top of the electric power communication equipment cabinet 1, and the air inlet of the air extraction pump 7 is connected with the top of the electric power communication equipment cabinet 1 through a hole, and the power supply of the air extraction pump 7 is independent of the external power supply of the electric power communication equipment cabinet 1; the smoke exhaust pipe 72 is installed on the top of the waterproof plate, and rainproof top plates 722 are connected to the top of the two sides of the smoke exhaust pipe 72 through vertical plates 721, the rainproof top plates 722 form a smoke exhaust channel with the top of the smoke exhaust pipe 72, and the rainproof top plates 722 of the smoke exhaust pipe 72 are designed to avoid rain and snow from entering and adapt to complex outdoor environments; after the air inlet 11 and the air outlet 12 are closed, the air extraction pump 7 starts to extract air to form a low-pressure environment in the cabinet, reduce the oxygen concentration to suppress combustion, and suppress the expansion of the fire, which is more proactive than the passive waiting for external fire extinguishing of the existing equipment. The reminding device is electrically connected with the controller for issuing fire warning and assisting positioning; the reminding device includes a pipeline 3, an audible and visual alarm 31 and iron oxide red powder 32, one-way valves 30 are arranged at both ends of the pipeline 3, the iron oxide red powder 32 is located in the pipeline 3 between the two one-way valves 30 (fluorescent powder can be mixed in the iron oxide red powder 32 for consideration of night monitoring and timely monitoring), the inlet of the pipeline 3 is connected with the outlet of the air extraction pump 7, the outlet of the pipeline 3 is connected with the bottom of the smoke exhaust pipe 72, and guide vanes 33 are arranged in the pipeline 3 close to the air extraction pump 7 for making the smoke passing through the guide vanes 33 fully contact and mix with the iron oxide red powder 32; the audible and visual alarm 31 is installed on the top of one side of the electric power communication equipment cabinet 1 and connected with the controller through wires, and the power supply of the audible and visual alarm 31 is independent of the external power supply of the electric power communication equipment cabinet 1, which can continuously issue audible and visual warnings after the power supply in the electric power communication equipment cabinet 1 is cut off, the iron oxide red powder 32 forms a colored smoke column after being discharged with the smoke, and the monitoring camera 5 can quickly locate the cabinet body on fire, solving the problem that the fire in the closed cabinet is difficult to identify, the audible and visual alarm 31 issues sound and light signals, giving consideration to visual and audible warnings, and being suitable for rapid response in complex outdoor environments. The monitoring device is electrically connected with the controller for identifying warning information and assisting positioning; the external protection unit of the Beidou electric power communication equipment realizes early and accurate monitoring of fire, and solves the problem of late discovery of hidden fire.

[0029] The monitoring device comprises a monitoring camera 5 installed at 1-2 m obliquely above the power communication equipment cabinet 1 through an adjustable support, adopts night vision, the angle between the lens axis and the outlet of the smoke exhaust pipe 72 is 30°-60°, to ensure covering the smoke exhaust direction, the monitoring camera 5 is signal connected with the controller, for identifying the colored smoke exhaust by the smoke exhaust pipe 72 and transmitting image data; the power supply thereof is independent of the external power supply of the power communication equipment cabinet 1, to ensure that the cabinet can still work continuously after the power supply in the cabinet is cut off; the controller positions the on-fire power communication equipment cabinet 1 through cross-verification of the camera data and the smoke sensor 4 signal and sends an instruction to the general control equipment, the controller cross- verifies the colored smoke image captured by the camera and the smoke sensor signal, avoids false alarm of a single sensor, improves the fire condition judgment accuracy, adopts independent power supply, has wide dynamic range and night vision function, and ensures stable operation in day and night and complex light environment.

[0030] After the closed vacuumizing device is synchronously activated, the air exhaust pump 7 is started, the internal air is extracted through the through hole at the top of the cabinet body, a low-pressure environment is formed in the cabinet, the oxygen concentration is reduced, and the fire spread is inhibited; the extracted smoke is transported to the smoke exhaust pipe 72 through the pipeline 3, when the smoke flows through the pipeline 3, the smoke is fully mixed with the red iron oxide powder 32 in the pipeline 3 under the action of the guide vane 33, a colored smoke column is formed and discharged from the smoke exhaust pipe 72, at the same time, the sound and light alarm 31 is started, and sound and light warning is issued. After the monitoring camera 5 (installed obliquely above the cabinet body, the lens is aimed at the outlet of the smoke exhaust pipe 72) captures the colored smoke column, image data is transmitted to the controller. The controller cross- verifies the signal of the smoke sensor 4 and the camera image, accurately positions the on-fire cabinet, the controller sends a cut-off instruction to the general control equipment through wireless transmission, the general control equipment only cuts off the power supply of the power communication equipment in the cabinet body, and the protection unit (smoke sensor, driving motor, air exhaust pump and camera) continuously works due to the independent power supply system. At the same time, the general control equipment sends a warning signal to the surrounding associated power equipment, to prevent the fire from spreading and ensure the safety of the system.

[0031] Please refer to the attached Figure 7 and Figure 8As shown, the protection unit also includes a photographing module 14, a picture compression processing module 15 and a short message communication module 16. The photographing module 14 is used to shoot the image of the periphery of the equipment cabinet, covering the key areas such as the surface of the cabinet, the periphery circuit and the installation foundation, to provide visual basis for remote inspection. The picture compression processing module 15 performs image compression processing using the JPEG2000 algorithm, which greatly reduces the file size and reduces the data transmission bandwidth pressure on the premise that the image definition meets the identification requirements. The short message communication module 16 is connected with the controller and serves as the core hub of data transmission. Through the Beidou satellite communication network, the compressed image data, equipment running state (such as temperature, voltage), weather data (such as humidity, wind speed) and fire alarm information are packaged and transmitted to the remote monitoring center. At the same time, relying on the high-precision positioning function of the Beidou satellite, the accurate geographic coordinates of the equipment cabinet are automatically recorded when the photographing module 14 works, and the coordinates are transmitted synchronously with the image data. The above modules are powered by a system independent of the external power supply of the power communication equipment cabinet 1. The equipment state, weather data and fire alarm information can be transmitted through the Beidou satellite to realize remote monitoring. The high-precision positioning function of the Beidou satellite communication is used to automatically record the accurate coordinate information of the shooting position when the photographing module 14 shoots the image of the periphery of the equipment cabinet, and the coordinates are transmitted to the remote monitoring center together with the image data through the short message communication module 16, which facilitates the staff to quickly locate the geographic position of the faulty equipment and improves the emergency response speed. The controller is connected with the total control device signal, which can cross-verify the smoke sensor 4 signal and the monitoring camera 5 image, locate the fire power communication equipment cabinet 1 and send the cut-off instruction to the total control device. The power supply of the controller is independent of the external power supply of the power communication equipment cabinet 1, which ensures that the instruction sending is not affected by the power state in the cabinet. When the total control device responds to the controller instruction, only the power supply of the power communication equipment installed in the power communication equipment cabinet 1 is cut off, while the power supply of the closing device 2, the smoke sensor 4, the closed vacuumizing device, the sound-light alarm 31 and the monitoring camera 5 is guaranteed by an independent system and is not affected by the power cut-off in the cabinet, which ensures the continuous operation of the protection function. After receiving the cut-off instruction, the total control device not only cuts off the power communication equipment power supply of the cabinet body, but also sends a warning signal to the surrounding associated power equipment to prompt the possible fire risk of the surrounding equipment, take preventive measures in advance to prevent the fire from spreading to the surrounding equipment, and ensure the safe and stable operation of the entire power system.

[0032] The photographing module 14 is started in real time when the preset trigger fire condition is met, and images of the key areas around the power communication equipment cabinet, the surface of the cabinet body and the surrounding lines are shot, thereby providing intuitive basis for remote inspection. After shooting, the picture compression processing module 15 uses the JPEG2000 algorithm to compress the images, reduces the file size to less than 30% of the original size under the premise of ensuring the clarity to meet the identification requirements, and reduces the data transmission pressure; the short message communication module 16 receives the compressed image data and synchronously collects the equipment operation state and the fire alarm signal. At the same time, relying on the high-precision positioning function of the Beidou satellite, the accurate geographic coordinates of the equipment cabinet are automatically recorded, and the coordinates are packaged and integrated with all the above data. Subsequently, the short message communication module 16 transmits the data packet to the remote monitoring center through the Beidou satellite communication network, thereby realizing remote monitoring in the environment without public network.

[0033] When the smoke sensor 4 detects the smoke signal in the cabinet and transmits it to the controller, the controller does not directly trigger the action, but waits for the image feedback of the monitoring camera 5. If the camera captures the colored smoke gas (mixed with red iron oxide powder) discharged from the smoke exhaust pipe 72, the controller cross- verifies the two signals, confirms the authenticity of the fire, and enters the next step of operation; if the signals are inconsistent, it is determined as a false alarm and the device self-check is started.

[0034] After the controller confirms the fire, the cut-off instruction is sent to the total control device through wireless transmission, and the position of the cabinet on fire is determined (combined with the Beidou positioning coordinates). When the total control device responds to the instruction, only the power supply of the internal power communication equipment (switch, Beidou module and device) of the power communication equipment cabinet 1 is cut off, while the key components of the protection unit (switch closing device, smoke sensor, air pump, sound and light alarm, monitoring camera, etc.) still work normally due to independent power supply, ensuring that the fire control is not interrupted. The total control device sends a warning signal to the surrounding associated power equipment (such as adjacent cabinet, line node) at the same time when cutting off the power supply of the cabinet on fire, prompting it to enter the state of alert, preventing the spread of fire or failure from the system level, and ensuring the safe and stable operation of the entire power system.

[0035] Workflow: When the fire caused by line aging, short circuit, etc. in the power communication equipment cabinet 1, the smoke generated by the initial smoldering is captured by the smoke sensor 4 at the top center of the cabinet, and the sensor transmits the signal to the controller installed in the waterproof control box at the bottom of the cabinet. After receiving the signal, the controller immediately starts the linkage control and sends the closing instruction to the switch closing device 2, and activates the closing vacuum device, the reminding device and the monitoring device. The driving motor 21 of the switch closing device 2 starts, drives the inclined closing drive plate 23 at the rear side of the cabinet to rotate through the shaft rod 22, drives the rod 24 to move along the sliding groove 231, and pushes the two closing plates 13 to slide along the first inlet slot 201 of the air inlet 11 and the second inlet slot 202 of the air outlet 12 respectively, synchronously sealing and covering the air inlet 11 and the air outlet 12 to block the oxygen from the outside into the cabinet. The air pump 7 of the closing vacuum device starts to extract the internal air through the through hole at the top of the cabinet, so as to form a low pressure environment in the cabinet to suppress the combustion; the extracted smoke is fully mixed with the red iron oxide powder 32 in the pipeline 3 under the action of the guide vane 33, and the colored smoke column is discharged from the exhaust pipe 72. At the same time, the sound and light alarm 31 starts to issue sound and light warning. The monitoring camera 5 installed 1-2m above the cabinet captures the colored smoke column and transmits the image data to the controller. The controller cross- verifies the smoke sensor signal and the camera image, accurately locates the cabinet on fire after confirming the fire, and sends the cutting instruction containing the Beidou positioning coordinates to the total control equipment through wireless transmission. The total control equipment only cuts off the power supply of the power communication equipment in the cabinet, while the key components (switch closing device, sensor and air pump) of the protection unit continue to work due to independent power supply. At the same time, the total control equipment sends a warning to the surrounding associated power equipment, prompting it to enter the "alert state" to prevent the spread of fire. The photographing module 14 takes pictures of the surrounding of the cabinet at a preset frequency or when the fire is triggered, and after compression processing by the picture compression processing module 15, the device state, weather data, fire alarm information and Beidou high-precision coordinates are integrated by the short message communication module 16, transmitted to the remote monitoring center through Beidou satellite, and remote inspection and positioning in the public network environment are realized.

[0036] The present application is aimed at the characteristics of electrical fire smoldering prior to heating, the smoke sensor responds quickly in the early stage of fire, and the visual warning of colored smoke column solves the problem of late discovery of fire caused by the closure of the cabinet in traditional equipment, and the response time is advanced by several minutes to several tens of minutes.

[0037] Further, by synchronously closing the air inlet 11 and the air outlet 12, the active measure of air pumping and oxygen reduction can effectively suppress the spread of fire from the root, which greatly reduces the damage and economic loss compared with the passive waiting mode of external fire extinguishing of the existing equipment.

[0038] Further, the cross verification mechanism of the smoke sensor 4 and the monitoring camera 5 reduces false alarms; the protection unit core components all adopt a power supply system independent of the power supply in the cabinet, ensuring that the control link is not interrupted in case of fire, solving the pain point of traditional devices "fire power off, protection failure".

[0039] Further, relying on Beidou satellite to realize image transmission and high-precision positioning in a public network-free environment, combined with a surrounding device early warning mechanism, a point-to-surface combined global protection network is formed, which is especially suitable for power equipment in remote areas, reduces the cost of manual inspection, and improves the emergency response speed.

[0040] It should be noted that in this text, relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the term "includes", "contains" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device.

[0041] Although embodiments of the present application have been shown and described, it will be understood by those having ordinary skill in the art that various changes, modifications, substitutions and alterations can be made thereto without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An external protection unit for a Beidou power communication device, comprising a power communication equipment cabinet (1) and a protection unit, characterized in that: The power communication equipment cabinet (1) has an air inlet (11) on the lower side of one outer wall and an air outlet (12) on the upper side of the other outer wall. Both the air inlet (11) and the air outlet (12) are equipped with a closing plate (13) on the outside. The two closing plates (13) are connected by a switch closing device (2). The protection unit includes a monitoring device, a closed vacuum device, an alert device, a monitoring device, and a controller. The controller is installed in an independent waterproof control box at the bottom of the power communication equipment cabinet (1). The controller is connected to an external power supply device via a wire. The monitoring device is electrically connected to the controller and is used to monitor the fire situation inside the power communication equipment cabinet (1) and send a signal back to the controller. The closed vacuum device is electrically connected to the controller and is used to receive commands from the controller and perform air extraction operations. The alert device is electrically connected to the controller and is used to issue a fire warning and assist in positioning. The monitoring device is electrically connected to the controller and is used to identify warning information and assist in positioning. The controller is used to control each device in a coordinated manner and is electrically connected to the main control device via wireless transmission to send commands to the main control device.

2. The peripheral protection unit of a Beidou power communication device according to claim 1, characterized in that: The monitoring device includes a smoke sensor (4), which is installed in the top center area of ​​the power communication equipment cabinet (1). The smoke sensor (4) is electrically connected to the controller through a wire, and its power supply is independent of the external power supply of the power communication equipment cabinet (1), so as to ensure that the monitoring can continue even after the power supply inside the cabinet is cut off.

3. The peripheral protection unit of a Beidou power communication device according to claim 1, characterized in that: The switch closing device (2) includes a limiting frame (20), a drive motor (21), a shaft (22), a closing drive plate (23), and a drive rod (24). The limiting frame (20) has a double-layer hollow structure and is fixed on the outer wall of the power communication equipment cabinet (1) outside the air inlet (11) and the air outlet (12). The bottom of the limiting frame (20) at the air inlet (11) is provided with a first slot (201), and the top of the limiting frame (20) at the air outlet (12) is provided with a second slot (202). The closing plate (13) slides to cover the air inlet (11) and the air outlet (12) through the two slots respectively. The drive motor (21) is fixed inside the power communication equipment cabinet (1), and its power supply is independent of the external power supply of the power communication equipment cabinet (1). The closing drive plate (23) is located on the rear side of the power communication equipment cabinet (1) with an inclined structure. The middle part of the closing drive plate (23) is connected to the output end of the internal drive motor (21) through the rear shell of the power communication equipment cabinet (1) via the shaft (22). The closing drive plate (23) has sliding grooves (231) at both ends. The closing plate (13) is slidably connected to the sliding grooves (231) through the drive rod (24) to realize the synchronous closing of the air inlet (11) and the air outlet (12).

4. The peripheral protection unit of a Beidou power communication device according to claim 1, characterized in that: The closed vacuum device includes a vacuum pump (7) and a smoke exhaust pipe (72); the vacuum pump (7) is located at the bottom of the top waterproof plate of the power communication equipment cabinet (1), and the air inlet of the vacuum pump (7) is connected to the top of the power communication equipment cabinet (1) through it. Its power supply is independent of the external power supply of the power communication equipment cabinet (1); the smoke exhaust pipe (72) is installed on the top of the waterproof plate, and the top of both sides is connected to a rainproof top plate (722) through a vertical plate (721). The rainproof top plate (722) and the top of the smoke exhaust pipe (72) form a smoke exhaust channel.

5. The peripheral protection unit of a Beidou power communication device according to claim 4, characterized in that: The reminder device includes a pipe (3), an audible and visual alarm (31), and iron oxide red powder (32). One-way valves (30) are provided at both ends of the pipe (3). The iron oxide red powder (32) is located in the pipe (3) between the two one-way valves (30). The inlet of the pipe (3) is connected to the outlet of the air pump (7). The outlet of the pipe (3) is connected to the bottom of the exhaust pipe (72). A guide vane (33) is provided in the end of the pipe (3) near the air pump (7) to make the flowing flue gas fully contact and mix with the iron oxide red powder (32).

6. The peripheral protection unit of a Beidou power communication device according to claim 5, characterized in that: The audible and visual alarm (31) is installed on the top side of the power communication equipment cabinet (1) and connected to the controller via a wire. Its power supply is independent of the external power supply of the power communication equipment cabinet (1). It can continuously emit audible and visual warnings after the power supply inside the power communication equipment cabinet (1) is cut off.

7. The peripheral protection unit of a Beidou power communication device according to claim 1, characterized in that: The monitoring device includes a monitoring camera (5), which is installed 1-2m above the power communication equipment cabinet (1) by an adjustable bracket. The angle between the lens axis and the outlet of the smoke exhaust pipe (72) is 30-60°. The monitoring camera (5) is connected to the controller and is used to identify the colored smoke discharged from the smoke exhaust pipe (72) and transmit image data. Its power supply is independent of the external power supply of the power communication equipment cabinet (1) to ensure that it can continue to work after the power supply inside the cabinet is cut off. The controller locates the burning power communication equipment cabinet (1) by cross-verifying the camera data and the smoke sensor (4) signal and sends instructions to the main control device.

8. The peripheral protection unit of a Beidou power communication device according to claim 1, characterized in that: The protection unit also includes a photo-taking module (14), an image compression processing module (15), and a short message communication module (16). The photo-taking module (14) is used to take pictures of the area around the equipment cabinet. The image compression processing module (15) compresses the images. The short message communication module (16) is connected to the controller. All of the above modules are powered by a system independent of the external power supply of the power communication equipment cabinet (1). The system can transmit equipment status, meteorological data, and fire alarm information through the Beidou satellite to achieve remote monitoring. Utilizing the high-precision positioning function of the Beidou satellite communication, when the photo-taking module (14) takes pictures of the area around the equipment cabinet, it automatically records the precise coordinate information of the shooting position and transmits the coordinates and image data together to the remote monitoring center through the short message communication module (16). This facilitates staff to quickly locate the geographical location of the faulty equipment and improves the emergency response speed.

9. The peripheral protection unit of a Beidou power communication device according to claim 1, characterized in that: The controller is connected to the main control device and can cross-verify the signal of the smoke sensor (4) and the image of the monitoring camera (5). After locating the fire power communication equipment cabinet (1), it sends a cut-off command to the main control device. The power supply of the controller is independent of the external power supply of the power communication equipment cabinet (1), ensuring that the command is not affected by the power status inside the cabinet.

10. The peripheral protection unit of a Beidou power communication device according to claim 1, characterized in that: When the main control device responds to the controller command, it only cuts off the power supply to the power communication equipment installed inside the power communication equipment cabinet (1). The power supply to the switch closing device (2), smoke sensor (4), closing vacuum device, audible and visual alarm (31) and monitoring camera (5) is guaranteed by an independent system and is not affected by the power cut-off inside the cabinet, ensuring the continuous operation of the protection function. After receiving the cut-off command, the main control device not only cuts off the power supply to the power communication equipment in the fire cabinet, but also sends a warning signal to the surrounding related power equipment to indicate the potential fire risk of the surrounding equipment, so as to take protective measures in advance to prevent the fire from spreading to the surrounding equipment and ensure the safe and stable operation of the entire power system.

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