CN114120574A - Early warning device of prevention switch board conflagration - Google Patents

Early warning device of prevention switch board conflagration Download PDF

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Publication number
CN114120574A
CN114120574A CN202111341078.6A CN202111341078A CN114120574A CN 114120574 A CN114120574 A CN 114120574A CN 202111341078 A CN202111341078 A CN 202111341078A CN 114120574 A CN114120574 A CN 114120574A
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China
Prior art keywords
fire
early warning
fixed
warning device
distribution cabinet
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CN202111341078.6A
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Chinese (zh)
Inventor
王楠
杨传辉
杨亚伟
高伟
李国昌
王吉震
李跃
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State Grid Shandong Electric Power Co Lanling County Power Supply Co
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State Grid Shandong Electric Power Co Lanling County Power Supply Co
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Application filed by State Grid Shandong Electric Power Co Lanling County Power Supply Co filed Critical State Grid Shandong Electric Power Co Lanling County Power Supply Co
Priority to CN202111341078.6A priority Critical patent/CN114120574A/en
Publication of CN114120574A publication Critical patent/CN114120574A/en
Withdrawn legal-status Critical Current

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    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/12—Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions
    • G08B17/125—Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions by using a video camera to detect fire or smoke
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
    • A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/0004—Gaseous mixtures, e.g. polluted air
    • G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
    • G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
    • G01N33/0031—General constructional details of gas analysers, e.g. portable test equipment concerning the detector comprising two or more sensors, e.g. a sensor array
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/24—Circuit arrangements for boards or switchyards
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26—Casings; Parts thereof or accessories therefor
    • H02B1/28—Casings; Parts thereof or accessories therefor dustproof, splashproof, drip-proof, waterproof or flameproof
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26—Casings; Parts thereof or accessories therefor
    • H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
    • H02B1/32—Mounting of devices therein
    • H02B1/34—Racks
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Management (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Business, Economics & Management (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Biochemistry (AREA)
  • Analytical Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Multimedia (AREA)
  • Food Science & Technology (AREA)
  • Combustion & Propulsion (AREA)
  • Public Health (AREA)
  • Fire Alarms (AREA)

Abstract

The utility model belongs to the technical field of the security protection of electrical apparatus switch board, especially, relate to an early warning device of prevention switch board conflagration, the early warning device of prevention switch board conflagration of this application detects through each gas content in the switch board in real time according to the gas composition that various insulating material produced when generating heat, partial discharge, transmits the testing result to back end clothes through data acquisition processorThe server is used for judging the insulation condition in the power distribution cabinet through some series of operation and comparison at the rear end through gas content change and increase, setting a threshold value, and automatically starting CO when the threshold value is reached2The fire extinguishing device is characterized in that the fire extinguishing device is provided with a thermal imaging device capable of rotating in the vertical direction of 360 degrees and adjusting the angle, so that the fire can be found and reduced to the maximum extent.

Description

Early warning device of prevention switch board conflagration
Technical Field
The application belongs to the technical field of electrical appliance power distribution cabinet security and protection, and particularly relates to an early warning device for preventing a power distribution cabinet fire disaster.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
In the operation of power equipment, because of reasons such as overload, environmental condition change, electrical equipment insulation aging, very easily make equipment have fire safety hidden danger, and once the conflagration takes place, because the particularity of electric power industry often can cause huge economic loss, serious endanger personal safety. Therefore, in the power industry, huge manpower and material resources are usually paid for power equipment routing inspection and electrical insulation judgment, and the fire safety hidden danger is reduced to the maximum extent.
At present, a very common mode for treating fire disasters is to adopt fire detectors such as light sensation, smoke sensation and the like, the principle of the fire detectors is to judge the occurrence of the fire by using fire light and smoke generated during the occurrence of the fire, and then to adopt alarming and fire extinguishing measures, but in practice, once the fire happens, even if the fire is put out in time, loss is often caused, and the loss can only be reduced as far as possible. In the power industry, the occurrence of fire is often accompanied by electrical faults such as discharge, short circuit and the like, and the loss caused by the faults is difficult to estimate at even one moment.
Because the fire in the power distribution cabinet often occurs in the situations of poor insulation, partial discharge and the like, the fundamental reasons are mostly insulation aging and poor insulation; whileFor the insulating materials of PVC, chloroprene rubber and chlorinated polyethylene, a large amount of HCL, CO and CO can be generated during poor insulation or partial discharge2Gas, chlorinated polyethylene, also produces SO2(ii) a For insulating materials of polyethylene, ethylene propylene rubber and nylon materials, a large amount of CO and CO can be generated during poor insulation or partial discharge2(ii) a Therefore, the internal insulation condition and the discharge condition of the power distribution cabinet can be judged according to the change of the gas components, the trend of possible fire is further judged, and measures are taken to process before the fire occurs.
In view of this, the device capable of performing judgment and early warning at the initial stage of a fire is provided, so that the occurrence of the fire is avoided as much as possible, and the device has great significance for normal and stable operation in the power industry.
Disclosure of Invention
The technical problem that this application will solve is: the shortcomings of the prior art are overcome, and the early warning device for preventing the fire of the power distribution cabinet is provided by analyzing and processing the change of gas components in the power distribution cabinet before the fire occurs.
The technical scheme that this application solved the problem that prior art exists adopted is:
the application provides a warning device of prevention switch board conflagration, comprising a base plate, from left to right be fixed with power module, wireless receiving module, data collection station, controller and detection chamber in proper order on the bottom plate, it has CO gas detector, CO to detect on the intracavity wall respectively fixed mounting2Gas detector, SO2A gas detector, a HCL gas detector; it has an trompil to detect chamber shell bottom, fixed mounting has axial fan in the trompil, the trompil bottom is located and detects chamber below integrated into one piece and has inside hollow silk head, silk head threaded connection has a filter piece, it has last impeller through a trompil fixed mounting to detect chamber left side shell top, and left side shell below has lower impeller through another trompil fixed mounting, it has a wire hole in addition to detect chamber left side shell below, it has step motor and fixed bolster to detect the positive fixed mounting of chamber shell, step motor's motor shaft threaded connection has thermal imaging device, thermal imaging device is last to go upArticulated have the articulated elements, articulated elements and metal pipeline fixed connection, metal pipeline is located one side fixedly connected with hose that detects the chamber, hose and gas circuit pipeline fixed connection, the gas circuit pipeline is fixed on the fixed bolster and CO pipeline2The fire extinguishing device is fixedly connected;
the thermal imaging device is wirelessly connected with the back-end server; the power supply module is electrically connected with the CO gas detector, the CO2 gas detector, the SO2 gas detector, the HCL gas detector, the controller, the data acquisition unit and the wireless receiving module, and the wireless receiving module is wirelessly connected with the rear-end server II.
Preferably, the thermal imaging device comprises a fixed rod, one end of the fixed rod is hollow, the inner wall of the fixed rod is an internal thread, and the internal thread is in threaded connection with an external thread on a motor shaft of the stepping motor; the other end of the fixed rod is integrally formed with two parallel fixed blocks, a lug is arranged in the middle of each fixed block, and the two fixed blocks and the lug are fixedly connected through a round hole in the middle of each fixed block and the corresponding lug by bolts; the convex block is fixedly provided with one side of a connecting piece, the other side of the connecting piece is fixedly provided with a thermal imager, and the middle part of the connecting piece is hinged with a hinged piece.
Preferably, it includes a filter shell to filter the piece, it has the detachable filter screen to filter the built-in, the filter screen top is located and filters the inside internal thread that is of piece shell, filter the internal thread and detect the silk head threaded connection of chamber bottom.
Preferably, the CO is2The fire extinguishing device comprises a fire extinguisher body, a fire extinguisher gas outlet, a carrying handle and a pressure handle, the fire extinguisher gas outlet is fixedly connected with a gas circuit, a second stepping motor is fixedly arranged below the carrying handle, a motor shaft of the second stepping motor is hinged to the carrying handle, a limiting block is arranged on the motor shaft above the carrying handle, the upper half part of the motor shaft of the second stepping motor is of an external thread structure and penetrates through a limiting hole in the middle of the pressure handle and is in threaded connection with a sliding bolt, the sliding bolt is located in a limiting groove fixedly arranged on the pressure handle, and the second stepping motor is electrically connected with a controller.
Preferably, the power supply module is a lithium battery outputting DC12V or a rectifying power supply module rectifying an input AC220V or AC380V voltage into a DC12V and a DC5V voltage and outputting the voltage.
Preferably, the cylinder is connected with the electromagnetic valve and the air storage tank through an air path, and the electromagnetic valve is electrically connected with the controller.
Preferably, the diameter of the opening of the axial flow fan fixed at the bottom of the detection cavity is larger than or equal to the diameter of the opening of the upper ventilation impeller fixed on the shell on the left side of the detection cavity plus the diameter of the opening of the lower ventilation impeller fixed on the shell on the left side of the detection cavity.
Preferably, a clamping groove is formed in the back face of the bottom plate, and two fixing clips are arranged at the bottom of the clamping groove.
Preferably, a hollow plug is installed in the wire outlet hole, one side of the plug is in threaded connection with the wire outlet hole, and the other side of the plug is in threaded connection with the plug cap.
Preferably, the thermal imager is internally provided with a lithium battery.
Compared with the prior art, the beneficial effect of this application is:
1. before the fire disaster happens, a fire disaster early warning is provided, the possibility of the fire disaster is qualitatively judged, and the hidden danger of the fire disaster is reduced to the minimum.
2. The thermal imaging device can observe the heat distribution in the power distribution cabinet in real time through the computer monitoring platform and can rotate 360 degrees for observation.
3. The gas sensor used in the application can be changed correspondingly according to the model of the cable used in the power distribution cabinet, and the application range is wide.
4. The device of the application is small in size and convenient to install.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
FIG. 1 is a schematic diagram of the overall structure of an early warning device for preventing fire in a power distribution cabinet according to the present application,
FIG. 2 is a schematic diagram of a detection cavity of the early warning device for preventing fire in a power distribution cabinet according to the present application,
FIG. 3 is a schematic diagram of the fire alarm device for a distribution cabinet according to the present application when the distribution cabinet is installed,
FIG. 4 is a schematic structural diagram of a thermal imaging device of an early warning device for preventing fire in a power distribution cabinet according to the present application,
FIG. 5 is a schematic view of an installation structure of an axial flow fan at the bottom of a detection cavity of a pre-warning device for preventing a fire of a power distribution cabinet according to the present application,
FIG. 6 is a schematic view of a plug structure in a wire outlet of the early warning device for preventing fire of a power distribution cabinet according to the present invention,
FIG. 7 is a schematic diagram of a filtering member of an early warning device for preventing fire in a power distribution cabinet according to the present application,
FIG. 8 shows an early warning device CO for preventing fire of a power distribution cabinet2The switch part of the fire extinguishing device is in a schematic structural view,
FIG. 9 shows an early warning device CO for preventing fire of a power distribution cabinet2The top structure of the switch part of the fire extinguishing device is schematically shown,
fig. 10 is a block diagram of a working flow of an early warning device for preventing a fire of a power distribution cabinet according to the present application.
In the figure:
1. bottom plate, 2, power module, 3, controller, 4, wireless receiving module, 5, detect the chamber, 6, filter, 7, go up ventilation impeller, 8, lower ventilation impeller, 9, the wire hole, 10, the clamping, 11, step motor, 12, thermal imaging device, 13, axial fan, 14, the dead lever, 15, the set screw, 16, the fixed block, 17, the bolt, 18, the lug, 19, the connecting piece, 20, thermal imager, 21, the articulated elements, 22, the metal pipeline, 23, the gaseous detector of CO, 24, CO2Gas detector, 25, SO2The gas detector 26, the HCL gas detector 27, the plug 28, the plug cap 29, the internal thread of the filter element 30, the filter screen 31, the filter element shell 32, the screw head 33, the rear end server I, the rear end server II, the rear end server 35, the hose 36, the gas circuit 37, the fixing bracket 38, the fire extinguisher body 39, the limiting hole 40, the data receiver 41, the second step motor 42, the carrying handle 43, the pressing handle 44, the limiting block 45 and the motor shaft,46. spacing groove, 47, sliding bolt.
The specific implementation mode is as follows:
the present application will be further described with reference to the following drawings and examples.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
In the present disclosure, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only relational terms determined for convenience in describing structural relationships of the parts or elements of the present disclosure, and do not refer to any parts or elements of the present disclosure, and are not to be construed as limiting the present disclosure.
Fig. 1 to 7 are schematic structural diagrams of an early warning device for preventing a fire hazard of a power distribution cabinet in the embodiment, which include a bottom plate 1, a clamping groove is formed in a back surface of the bottom plate 1, two fixing clips 10 are arranged at a bottom of the clamping groove, a power module 2, a wireless receiving module 4, a data collector 40, a controller 3 and a detection cavity 5 are sequentially fixed on the bottom plate 1 from left to right, an opening is formed at a bottom of the detection cavity 5, an axial flow fan 13 is fixedly installed in the opening, a power supply of the axial flow fan 13 is DC12V, an air direction is upward after the power supply is powered on, a hollow screw head 32 is integrally formed at a bottom of the opening below the detection cavity 5, the screw head 32 is in threaded connection with an internal thread 29 of a filter element 6, the filter element 6 includes a filter element housing 31, and a detachable filter screen 30 is arranged in the filter element housing 31;
it has last ventilation impeller 7 to detect 5 left sides shells top in chamber through a trompil fixed mounting, and ventilation impeller 8 down is installed through another trompil fixed mounting to left side shell below, go up ventilation impeller 7 and lowerThe ventilation impeller 8 can freely rotate, a wire outlet hole 9 is further formed in the lower portion of the shell on the left side of the detection cavity 5, a hollow plug 27 is mounted in the wire outlet hole 9, one side of the plug 27 is in threaded connection with the wire outlet hole 9, the other side of the plug 27 is in threaded connection with a plug cap 28, and a CO gas detector 23 are fixedly mounted on the inner wall of the detection cavity 5 respectively2Gas detector 24, SO2A gas detector 25, a HCL gas detector 26; a stepping motor 11 and a fixed support 37 are fixedly mounted on the front surface of the shell of the detection cavity 5, the distance between the fixed support 37 and the stepping motor 11 in the vertical direction of a motor shaft is not more than 6cm, the stepping motor 11 is powered by a DC12V power supply, the motor shaft of the stepping motor 11 is in threaded connection with a fixed rod 14 of which one end hollow inner wall of a thermal imaging device 12 is provided with an internal thread 22, two parallel fixed blocks 16 are integrally formed at the other end of the fixed rod 14, a convex block 18 is arranged in the middle of each fixed block 16, and the two fixed blocks 16 and the convex block 18 are fixedly connected through a round hole in the middle of each fixed block 16 and the convex block 18 by a bolt 17; the lithium battery thermal imaging device is characterized in that one side of a connecting piece 19 is fixedly mounted on the bump 18, a thermal imager 20 is fixedly mounted on the other side of the connecting piece 19, a lithium battery is arranged in the thermal imager 20, an articulated piece 21 is articulated at the middle part of the connecting piece 19, the articulated piece 21 is fixedly connected with a metal pipeline 22, the metal pipeline 22 is located at one end of the detection cavity 5 and is fixedly connected with a hose 35, the hose 35 is fixedly connected with an air pipeline 36, and the air pipeline 36 is fixed on a fixed support 37 and is connected with a CO (carbon monoxide) pipeline 362The air outlet of the fire extinguisher of the fire extinguishing device is fixedly connected with the CO2The fire extinguishing device further comprises a fire extinguisher body 38, a carrying handle 42 and a pressure handle 43, wherein a second stepping motor 41 is fixedly mounted below the carrying handle 42, a motor shaft of the second stepping motor 41 is hinged to the carrying handle 42, a limiting block 44 is arranged on the motor shaft above the carrying handle 42, the upper half part of the motor shaft of the second stepping motor 41 is of an external thread structure and penetrates through a limiting hole 39 in the middle of the pressure handle 43 to be in threaded connection with a sliding bolt 47, the sliding bolt 47 is located in a limiting groove 46 fixedly mounted on the pressure handle 43, the sliding bolt 47 can slide in the limiting groove 46, and the second stepping motor 42 is electrically connected with the controller 3 and the power module 2.
The thermal imaging device 12 is wirelessly connected with the first back-end server 33, the power module 2 selects a lithium battery outputting DC12V in this embodiment, the power module 2 is electrically connected with the CO gas detector 23, the CO2 gas detector 24, the SO2 gas detector 25, the HCL gas detector 26, the controller 3, the data collector 40, and the wireless receiving module 4, the wireless receiving module 4 is wirelessly connected with the second back-end server 34, and the data collector 40 selects a data collector supporting a remote function and a short message notification function.
Referring to fig. 2, in the present embodiment, the CO gas detector 23, CO2Gas detector 24, SO2 Gas detection ware 25, gaseous detector 26 of HCL all adopt wall-hanging, it selects 120mm to detect the trompil diameter that 5 bottoms in chamber are fixed with axial fan 13, detect the trompil diameter of 5 left side shells in chamber fixed upper ventilating impeller 7, detect the trompil diameter of 5 left side shells in chamber fixed lower ventilating impeller 8 and all select 60mm, just so can guarantee that the amount of wind of the department of admitting air is greater than the amount of wind of single department of giving vent to anger, and wire hole 9 department passes the cable and installs end cap 27, like this when this device circular telegram axial fan 13 rotates the back, gaseous in the switch board gets into through axial fan 13 and detects chamber 5, simultaneously under the effect of pressure, the gas that gets into and detects chamber 5 gets back to the switch board inside after going out from upper ventilating impeller 7 and lower ventilating impeller 8 respectively, the mounting structure sketch map of this device in the switch board is shown in figure 3.
As shown in fig. 10, in the use of the device, the attendant can read the parameter values, which are read from the data collector 40 and received by the back-end server two 34, of the CO gas detector 23, the CO2 gas detector 24, the SO2 gas detector 25 and the HCL gas detector 26 from the computer monitoring platform B, take the read parameter values as the calibration values of the gas parameters, respectively, and judge the change of the gas components in the power distribution cabinet by comparing the measurement values of the CO gas detector 23, the CO2 gas detector 24, the SO2 gas detector 25 and the HCL gas detector 26 with the calibration values and judging the change trend at the same time in the later operation of the power distribution cabinet;
as shown in fig. 8, for the thermal imaging device 12, a monitoring person can open a thermal imaging graph, which is received by the first back-end server 33 and acquired by the thermal imaging device 12 in real time, on the computer monitoring platform a, and can determine an area where heat is more centralized and a highest temperature in the power distribution cabinet according to a heat distribution condition in the thermal imaging graph; when needed, a signal can be transmitted to the wireless receiving module 4 through the rear-end server II 34 on the computer monitoring platform B, so that the wireless receiving module 4 sends an instruction to the controller 3, the controller 3 is further controlled to enable the stepping motor 11 to rotate, the thermal imaging device 12 can rotate 360 degrees to acquire a thermal imaging image, and the rotating speed of the stepping motor 11 is controlled to be below 5 r/min.
Fig. 5 shows the installation structure of the axial flow fan at the bottom of the detection cavity 5 and the structure of the screw head 32 in threaded connection with the filter member 6 in the present embodiment, fig. 7 shows the structure of the filter member 6, the filter member 6 is in threaded connection with the screw head 32 through the filter member internal thread 29, and the filter screen 30 located inside the filter member 6 plays a role of filtering large particles in air and can be detached and replaced.
When the device is used, firstly, the normal operation of the power distribution cabinet is determined, then the power distribution cabinet is fixed on a guide rail in the power distribution cabinet through two fixing clips 10 at the bottom of a clamping groove in the back of a bottom plate 1, then a fixing screw 15 is unscrewed, a fixing rod 14 is rotated to a proper position on a motor shaft of a stepping motor 11 through internal threads in the fixing rod 14, so that a thermal imaging device 12 is convenient to shoot, and then the fixing screw 15 is screwed to fix the fixing rod 14; then the bolt 17 is loosened, the angle of the connecting piece 19 of the thermal imaging device 12 is adjusted, and the bolt 17 is screwed after the adjustment, so that the thermal imaging device 12 is positioned and fixed.
For the external circuit that needs to be connected to the external power supply of the power module 2 and the device is powered on, in this embodiment, the power module 2 adopts a lithium battery with an output DC12V, the lithium battery is additionally provided with an optocoupler and a pull-down resistor when supplying power to the controller 3, and the controller 3 is supplied with power by using a DC5V voltage; after the corresponding lithium battery is installed and the operation is stable, the CO gas detector 23 and CO are recorded on the computer monitoring platform B2Gas detector 24, SO2The values of the parameters a measured by the gas detector 25 and the HCL gas detector 260、b0、c0、d0As a calibration value for each gas. Because the gas components in the power distribution cabinet are slightly different under different environments, the device is providedWhen the gas distribution cabinet is in use, the gas component in the cabinet is a calibration value according to the normal operation or initial state of the power distribution cabinet, and a0、b0、c0、d0Numerical value is the standard, when each gas composition changes and reaches certain extent in the switch board, probably is that switch board inner part has produced physics or chemical change.
Then the power distribution cabinet is powered on to keep normal operation, and the CO gas detector 23 and CO gas detector at the time t are recorded on the computer monitoring platform B of the back-end server II 34 in real time2Gas detector 24, SO2The values of the parameters a measured by the gas detector 25 and the HCL gas detector 260(t)、b0(t)、c0(t)、d0(t)Forming an electronic recording table and a recording curve, and comparing the real-time measured value with a calibration value a0、b0、c0、d0Difference and trend of change:
1. when the parameter a is0、b0、c0、d0When the numerical value change fluctuates within 50ppm, the monitoring is kept;
namely Ia0(t)-a0I is less than or equal to 50 and Ib0(t)-b0I is less than or equal to 50 and ic0(t)-c0I is less than or equal to 50 and id0(t)-d0When the I is less than or equal to 50, the monitoring is kept;
2. when the parameter a is0、b0、c0、d0When the magnitude of the change of any one value or some or all of the values exceeds a set range, or the value of the parameter a0、b0、c0、d0Wherein the increase trend of any one value or some or all values measured in real time does not exceed the set value but keeps continuously increasing for 1 day, namely 50 < Ia0(t)-a0I < 300 or 50 < Ib0(t)-b0I < 300 or 50 < ic0(t)-c0I < 300 or 50 < Id0(t)-d0When I is less than 300 or a lasts for 1 day0(t)-a0> 0 or 1 consecutive day b0(t)-b0> 0 or 1 consecutive day c0(t)-c0> 0 or 1 day d0(t)-d0When the value is more than 0, the following measures are taken:
acquiring a captured picture of a thermal imaging device 12 in real time through wireless transmission from a computer monitoring platform A of a first rear-end server 33, simultaneously sending an instruction through a wireless sending module arranged in a server by a computer monitoring platform B of a second rear-end server 34, sending the instruction to a controller 3 by a wireless receiving module 4 after receiving the instruction, enabling the controller 3 to control a stepping motor 11 to rotate, and further controlling the thermal imaging device 12 to realize 360-degree rotation for acquiring and recording a thermal imaging picture in a power distribution cabinet;
when the environmental temperature collected by the thermal imaging instrument of the thermal imaging device 12 exceeds the maximum allowable value set on the computer monitoring platform a, the computer monitoring platform a generates an alarm signal, the alarm signal is transmitted to the computer monitoring platform B, the computer monitoring platform B sends a signal to the wireless receiving module 4 through the wireless sending module arranged in the rear-end server two 34, the wireless receiving module 4 immediately sends the signal to the controller 3 after receiving the signal, the controller 3 firstly controls the stepping motor 11 to stop rotating, so that the thermal imaging instrument 20 is opposite to the position where the detected temperature exceeds the maximum allowable value, then the controller 3 sends a signal to the second stepping motor 41, so that the second stepping motor 41 can rotate forwards, as shown in fig. 8 and 9, as the motor shaft of the second stepping motor 41 is hinged with the carrying handle 42 and hinged with the sliding bolt 47 in the limiting groove 46 fixed on the pressing handle 43, the rotation and the displacement in the vertical direction of the sliding bolt 47 are limited by the limiting groove 46, so when the second stepping motor 41 rotates forwards, the pressing handle 43 moves downwards under the action of the threaded transmission force between the motor shaft and the sliding bolt 47, and in the process, the pressing handle 43 and the lifting handle 42 form a certain angle, so that the limiting hole 39 is formed in the pressing handle 43 in the design of the application, and in the process that the pressing handle 43 descends, the sliding bolt 47 can slowly move inwards along the limiting hole 39, so that the threaded transmission process is smoother; the outer ring of the motor shaft 45 of the lifting handle 42 is fixedly provided with a limiting block 44 to prevent the pressing handle 43 from pressing a certain range. When the pressing handle 43 is pressed to a certain angle, the controller 3 controls to stopA two-step motor 41, at this time CO2When the fire extinguisher is opened, fire extinguishing gas passes through the gas path 36, the hose 35 and the metal pipeline 22 from the gas outlet of the fire extinguisher and is sprayed out from the pipe orifice of the metal pipeline 22, as shown in figure 4, because the metal pipeline 22 is hinged with the connecting piece 19 through the hinged piece 21, the metal pipeline 22 and the connecting piece 19 face to the same direction, when CO is in the fire extinguisher2Coming out in exactly the same area as measured by the thermal imager 20.
If the device with the overhigh temperature is found, but the temperature does not exceed the maximum temperature allowable value, sending an early warning short message to an on-duty person through a first back-end server 33, and carrying out power-off inspection processing on the on-duty person according to the thermal imaging acquisition condition of the thermal imaging device 12;
if the temperature abnormality is not found, increasing the polling frequency of the field power distribution cabinet, and meanwhile, mainly observing the change condition of each subsequent parameter value;
3. when the parameter a is0、b0、c0、d0Wherein the magnitude of the change of any one value or some or all of the values exceeds the maximum setting range, or the value of the parameter a0、b0、c0、d0When the increasing trend of the numerical value measured in real time by any one numerical value or some numerical values or all numerical values exceeds the set value, namely Ia0(t)-a0I is not less than 300 or Ib0(t)-b0I is not less than 300 or ic0(t)-c0I is not less than 300 or id0(t)-d0When I is more than or equal to 300 or (a)0(t)-a0)/a0> 2 or (b)0(t)-b0)/b0> 2 or (c)0(t)-c0)/c0> 2 or (d)0(t)-d0)/d0When the temperature is higher than 2, the same as the ambient temperature acquired by the thermal imager of the thermal imaging device 12 exceeds the maximum allowable value set on the computer monitoring platform a, namely, the computer monitoring platform a sends a signal to the wireless receiving module 4 through the built-in wireless sending module, the wireless receiving module 4 sends the signal to the controller 3 immediately after receiving the signal, the controller 3 firstly controls the stepping motor 11 to stop rotating, so that the thermal imager 20 is rightFor the position exceeding the maximum allowable temperature, the controller 3 then sends a signal to the second stepping motor 41 to enable the second stepping motor 41 to rotate the second stepping motor 41 forward, as shown in fig. 8 and 9, since the motor shaft of the second stepping motor 41 is hinged to the handle 42 and is in threaded connection with the sliding bolt 47 located in the limiting groove 46 fixed on the pressing handle 43, and the limiting groove 46 limits the rotation and the displacement in the vertical direction of the sliding bolt 47, when the second stepping motor 41 rotates forward, the pressing handle 43 moves downward under the action of the threaded transmission of the motor shaft and the sliding bolt 47, and in the process, since the pressing handle 43 forms a certain angle with the handle 42, the pressing handle 43 is provided with a limiting hole 39, and in the process that the pressing handle 43 descends, the sliding bolt 47 moves inward along the limiting hole 39 slowly, the thread transmission process is smoother; the outer ring of the motor shaft 45 of the lifting handle 42 is fixedly provided with a limiting block 44 to prevent the pressing handle 43 from pressing a certain range. When the handle 43 is pressed to a certain angle, the controller 3 stops the second stepping motor 41, and CO is in the process2When the fire extinguisher is opened, fire extinguishing gas passes through the gas path 36, the hose 35 and the metal pipeline 22 from the gas outlet of the fire extinguisher and is sprayed out from the pipe orifice of the metal pipeline 22, as shown in figure 4, because the metal pipeline 22 is hinged with the connecting piece 19 through the hinged piece 21, the metal pipeline 22 and the connecting piece 19 face to the same direction, when CO is in the fire extinguisher2When the fire is out, the fire is just in the same area measured by the thermal imaging instrument 20, and the fire is extinguished in a fixed-point area.
The utility model provides an early warning device of prevention switch board conflagration, before the conflagration does not take place, provide conflagration early warning, and judge the possibility that the conflagration took place qualitatively, can in time inform the site personnel to handle, fall to the conflagration hidden danger minimum, furthest has avoided the emergence of conflagration, while simple structure, simple to operate, thermal imaging device can pass through the interior heat distribution of computer monitoring platform real-time observation switch board, and can 360 rotatory observation cabinets in the condition.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Although the embodiments of the present application have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present application, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive effort by those skilled in the art.

Claims (10)

1. The utility model provides a warning device of prevention switch board conflagration which characterized in that: the device comprises a bottom plate (1), a power module (2), a wireless receiving module (4), a data acquisition unit (40), a controller (3) and a detection cavity (5) are sequentially fixed on the bottom plate (1) from left to right, and a CO gas detector (23), a CO gas detector (23) and a CO gas detector (5) are respectively and fixedly mounted on the inner wall of the detection cavity (5)2Gas detector (24), SO2A gas detector (25), a HCL gas detector (26); there is a trompil detection chamber (5) shell bottom, fixed mounting has axial fan (13) in the trompil, the trompil bottom is located detection chamber (5) below integrated into one piece has inside hollow silk head (32), silk head (32) threaded connection has a filter piece (6), it has last ventilation impeller (7) through a trompil fixed mounting to detect chamber (5) left side shell top, there is lower ventilation impeller (8) through another trompil fixed mounting to left side shell below, it has wire hole (9) in addition to detect chamber (5) left side shell below, it openly fixed mounting has step motor (11) and fixed bolster (37) to detect chamber (5) shell, the motor shaft threaded connection of step motor (11) has thermal imaging device (12), it has articulated elements (21) to articulate on thermal imaging device (12), articulated elements (21) and metal pipeline (22) fixed connection, the metal pipeline (22) is located on one side of the detection cavity (5) and is fixedly connected with a hose (35), the hose (35) is fixedly connected with an air channel pipeline (36), and the air channel pipeline (36) is fixed on a fixing support (37) and is connected with CO2The fire extinguishing device is fixedly connected;
the thermal imaging device (12) is wirelessly connected with a first back-end server (33); the power module (2) is electrically connected with the CO gas detector (23), the CO2 gas detector (24), the SO2 gas detector (25), the HCL gas detector (26), the controller (3), the data acquisition unit (40) and the wireless receiving module (4), and the wireless receiving module (4) is wirelessly connected with the rear-end server II (34).
2. The early warning device for preventing the fire of the power distribution cabinet according to claim 1, characterized in that:
the thermal imaging device (12) comprises a fixing rod (14), one end of the fixing rod (14) is hollow, the inner wall of the fixing rod is an internal thread (22), and the internal thread (22) is in threaded connection with an external thread on a motor shaft of the stepping motor (11); the other end of the fixed rod (14) is integrally formed with two parallel fixed blocks (16), a convex block (18) is arranged in the middle of each fixed block (16), and the two fixed blocks (16) and the convex block (18) are fixedly connected through a round hole in the middle of each fixed block (16) and the corresponding convex block (18) through bolts (17); the projection (18) is fixedly provided with one side of a connecting piece (19), the other side of the connecting piece (19) is fixedly provided with a thermal imaging instrument (20), and the middle part of the connecting piece (19) is hinged with a hinge piece (21).
3. The early warning device for preventing the fire of the power distribution cabinet according to claim 1, characterized in that:
filter piece (6) including filtering a shell (31), it has detachable filter screen (30) to filter piece shell (31) built-in, filter screen (30) top is located and filters inside for filtering a piece internal thread (29) of shell (31), filter a silk head (32) threaded connection of internal thread (29) and detection chamber (5) bottom.
4. The early warning device for preventing the fire of the power distribution cabinet according to claim 1, characterized in that:
the CO is2The fire extinguishing device comprises a fire extinguisher body (38), a fire extinguisher gas outlet, a carrying handle (42) and a pressure handle (43), the fire extinguisher gas outlet is fixedly connected with a gas path (36), a second stepping motor (41) is fixedly arranged below the carrying handle (42), a motor shaft of the second stepping motor (41) is hinged to the carrying handle (42), a limiting block (44) is arranged on the motor shaft above the carrying handle (42), and the second stepping motor is characterized in thatThe upper half part of a motor shaft of the stepping motor (41) is of an external thread structure and penetrates through a limiting hole (39) in the middle of the pressing handle (43) to be in threaded connection with a sliding bolt (47), the bolt is positioned in a limiting groove (46) fixedly installed on the pressing handle (43), and the second stepping motor (42) is electrically connected with the controller (3).
5. The early warning device for preventing the fire of the power distribution cabinet according to claim 1, characterized in that:
the power supply module (2) is a lithium battery outputting DC12V, or a rectifying power supply module rectifying input AC220V or AC380V voltage into DC12V and DC5V voltage and outputting the voltage.
6. The early warning device for preventing the fire of the power distribution cabinet according to claim 1, characterized in that:
the air cylinder (41) is connected with the electromagnetic valve (39) and the air storage tank (42) through an air path, and the electromagnetic valve (39) is electrically connected with the controller (3).
7. The early warning device for preventing the fire of the power distribution cabinet according to claim 1, characterized in that:
the diameter of the opening of the axial flow fan (13) fixed at the bottom of the detection cavity (5) is larger than or equal to the diameter of the opening of the upper ventilation impeller (7) fixed on the shell on the left side of the detection cavity (5) and the diameter of the opening of the lower ventilation impeller (8) fixed on the shell on the left side of the detection cavity (5).
8. The early warning device for preventing the fire of the power distribution cabinet according to claim 1, characterized in that:
the back of the bottom plate (1) is provided with a clamping groove, and the bottom of the clamping groove is provided with two fixing clamps (10).
9. The early warning device for preventing the fire of the power distribution cabinet according to claim 1, characterized in that:
a hollow plug (27) is installed in the wire outlet hole (9), one side of the plug (27) is in threaded connection with the wire outlet hole (9), and the other side of the plug (27) is in threaded connection with the plug cap (28).
10. The early warning device for preventing the fire disaster of the power distribution cabinet according to the claim 1 or 2, characterized in that:
the thermal imager (20) is internally provided with a lithium battery.
CN202111341078.6A 2021-11-12 2021-11-12 Early warning device of prevention switch board conflagration Withdrawn CN114120574A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111341078.6A CN114120574A (en) 2021-11-12 2021-11-12 Early warning device of prevention switch board conflagration

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111341078.6A CN114120574A (en) 2021-11-12 2021-11-12 Early warning device of prevention switch board conflagration

Publications (1)

Publication Number Publication Date
CN114120574A true CN114120574A (en) 2022-03-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111341078.6A Withdrawn CN114120574A (en) 2021-11-12 2021-11-12 Early warning device of prevention switch board conflagration

Country Status (1)

Country Link
CN (1) CN114120574A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115085384A (en) * 2022-07-25 2022-09-20 深圳市朝阳辉电气设备有限公司 Intelligent power consumption monitoring terminal device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115085384A (en) * 2022-07-25 2022-09-20 深圳市朝阳辉电气设备有限公司 Intelligent power consumption monitoring terminal device
CN115085384B (en) * 2022-07-25 2022-11-18 深圳市朝阳辉电气设备有限公司 Intelligent power consumption monitoring terminal device

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