CN114336382B - Multi-functional outdoor intelligent low-voltage switchgear - Google Patents
Multi-functional outdoor intelligent low-voltage switchgear Download PDFInfo
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- CN114336382B CN114336382B CN202210217706.8A CN202210217706A CN114336382B CN 114336382 B CN114336382 B CN 114336382B CN 202210217706 A CN202210217706 A CN 202210217706A CN 114336382 B CN114336382 B CN 114336382B
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Abstract
The invention relates to the field of distribution equipment, and particularly discloses a multifunctional outdoor intelligent low-voltage switch cabinet which comprises a cabinet body, and a temperature measuring component, a cooling component, a circuit breaking component, a fire fighting component and a control system which are arranged on the cabinet body, wherein the temperature measuring component comprises a thermal radiation receiver, a converter and a signal processor, the thermal radiation receiver is used for simultaneously and real-timely measuring thermal radiation light emitted by components in the cabinet body to obtain corresponding thermal radiation light signals, the thermal radiation light signals are converted into corresponding electric signals through the converter, and the electric signals are subjected to fitting analysis through the signal processor to obtain temperature data and temperature distribution conditions in the cabinet body, so that the on-off of current can be automatically controlled according to the temperature in the cabinet body, the safety of the components and circuits in the switch cabinet can be intelligently protected, and the multifunctional outdoor intelligent low-voltage switch cabinet has the advantages of simple and reasonable structure, low cost, and capability of automatically controlling the temperature of the switch cabinet body, Good effect and strong practicability.
Description
Technical Field
The invention relates to the field of power distribution equipment, in particular to a multifunctional outdoor intelligent low-voltage switch cabinet.
Background
The switch power distribution cabinet is mainly used for opening and closing, controlling and protecting electric equipment in the process of generating, transmitting, distributing and converting electric energy of an electric power system. The components in the switch cabinet mainly comprise a circuit breaker, an isolating switch, a load switch, an operating mechanism, a mutual inductor, various protection devices and the like.
However, the current switch power distribution cabinet still has many disadvantages. One is that when a traditional cooling system cools a switch cabinet, cooling gas is directly discharged into the cabinet body, the cooling gas has no recycling function, and the cooling gas can run into the external environment, so that the cooling effect is reduced and the resource waste is caused, and when the cabinet body needs to be cooled to a certain temperature value, more cooling power is often needed; secondly, the switch cabinet does not have the function of intelligent power-off, and when the temperature of the cabinet body is abnormal, the switch cabinet cannot automatically power off so as to protect a circuit; thirdly, the switch cabinet does not have the functions of automatic monitoring and troubleshooting, cannot automatically monitor the operation condition of the components in the cabinet body, is usually maintained and overhauled after the components break down, and needs to be troubleshot one by one in the overhauling process, thereby wasting labor and time and wasting more labor force; fourthly, the switch cabinet does not have the automatic fire extinguishing function, and after the cabinet body is in a fire, the switch cabinet cannot automatically extinguish fire.
Disclosure of Invention
The invention overcomes the defects of the prior art and provides a multifunctional outdoor intelligent low-voltage switch cabinet.
In order to achieve the aim, the invention adopts the technical scheme that: a multifunctional outdoor intelligent low-voltage switch cabinet comprises a cabinet body, and a temperature measuring component, a cooling component, a circuit breaking component, a fire-fighting component and a control system which are arranged on the cabinet body;
the temperature measurement assembly comprises a thermal radiation receiver, a converter and a signal processor, wherein the thermal radiation receiver is used for measuring thermal radiation light emitted by components in the cabinet body to obtain corresponding thermal radiation optical signals, the thermal radiation optical signals are converted into corresponding electric signals through the converter, and the electric signals are subjected to fitting analysis through the signal processor to obtain temperature data and temperature distribution conditions in the cabinet body;
the cooling assembly comprises a cooling cavity and a condenser, the output end of the condenser is connected with an air outlet pipe in a matching way, the input end of the condenser is connected with an air inlet pipe in a matching way, the air outlet pipe is connected to the bottom of the cooling cavity, and the air inlet pipe is connected to the top of the cooling cavity, so that the air in the cooling cavity can circularly flow on the condenser;
the circuit breaking assembly comprises a circuit breaking switch, the circuit breaking switch is connected to a bus circuit of the switch cabinet, and the circuit breaking switch can cut off the main circuit current of the switch cabinet;
the fire-fighting assembly comprises an aerosol sprayer, the aerosol sprayer is detachably mounted above the inside of the cabinet, and the aerosol sprayer can be used for extinguishing fire of the switch cabinet.
Further, in a preferred embodiment of the present invention, the gas in the cooling chamber enters the condenser through the gas inlet pipe, is cooled by the condenser, and then flows back into the cooling chamber through the gas outlet pipe, and the gas outlet pipe is provided with a pressure sensor.
Further, in a preferred embodiment of the present invention, the circuit breaker includes a housing, a first thermal deformation sheet, a first push rod, an elastic sheet, and a first mounting seat are disposed in the housing, one end of the first push rod is connected to the first thermal deformation sheet in a matching manner, the other end of the first push rod is connected to the elastic sheet in a matching manner, two ends of the first thermal deformation sheet are fixed to the first mounting seat, the elastic sheet includes a movable sheet and a fixed sheet, the fixed sheet is fixedly connected to an inner wall of the housing, and the movable sheet can slide along the housing.
Further, in a preferred embodiment of the present invention, the circuit breaker further includes a fixed contact and a movable contact, the fixed contact is fixed on the housing through a fixed seat, the movable contact is disposed on the movable plate, a sliding slot is disposed at the bottom of the housing, a protruding block is disposed on the movable contact, the protruding block is embedded in the sliding slot, so that the movable contact can move up and down along the sliding slot, and photoelectric sensors are disposed in the sliding slot at intervals along the length direction.
Further, in a preferred embodiment of the present invention, the fixed contact is connected to an input line of the internal bus circuit of the switch cabinet in a matching manner, and the movable contact is connected to an output line of the internal bus circuit of the switch cabinet in a matching manner, so that the current of the internal bus circuit of the switch cabinet can be cut off after the movable contact is separated from the fixed contact.
Further, in a preferred embodiment of the present invention, the aerosol injector includes a second thermal deformation piece, a second push rod, a nozzle, and an air storage cavity, one end of the second push rod is connected to the second thermal deformation piece in a matching manner, the second thermal deformation piece is fixedly mounted at the bottom of the aerosol injector through a second mounting seat, the other end of the second push rod is connected to a plug in a matching manner, and a locking gasket is disposed below the plug.
Further, in a preferred embodiment of the present invention, the spray head is connected to the gas storage chamber through a conveying pipe, and an air outlet of the conveying pipe is blocked by a plug.
The invention provides a temperature measuring method of a multifunctional outdoor intelligent low-voltage switch cabinet, which is applied to any multifunctional outdoor intelligent low-voltage switch cabinet and comprises the following steps:
acquiring temperature information corresponding to a plurality of different areas through a thermal radiation receiver;
determining a central point of the temperature active region and recording coordinate information of the central point according to the obtained temperature information;
comparing the coordinate information of the central point with the coordinate information of each component in a database to determine the component with abnormal temperature;
after determining the component with abnormal temperature, uploading the temperature abnormal information of the component to a control system, and recording the temperature abnormal information of the component by the control system to monitor the component in real time;
and if the temperature abnormal accumulation times of the same component reach a first preset value or reach a second preset value within preset time, generating alarm information, and sending the alarm information to a remote user side by the control system.
Further, in a preferred embodiment of the present invention, the method for acquiring temperature information corresponding to a plurality of different areas by using the thermal radiation receiver further comprises the following steps:
thermal radiation light emitted by different areas in the cabinet body is collected through a thermal radiation receiver to obtain an electric signal corresponding to a thermal radiation light signal;
amplifying and filtering the electric signal;
fitting and analyzing the electric signals through a signal processor to obtain temperature data and temperature distribution conditions inside the cabinet body;
according to the temperature data, the interior of the cabinet body is cooled through the cooling assembly, so that the temperature in the cabinet body is kept within a certain range.
Further, in a preferred embodiment of the present invention, when the temperature data is less than a first preset threshold, the cooling module does not cool the cabinet; when the temperature data is larger than a first preset threshold and smaller than a second preset threshold, the cooling assembly cools the cabinet body at a first cooling rate; when the temperature data is greater than a second pre-threshold, the cooling assembly cools the cabinet at a second cooling rate.
According to the multifunctional outdoor intelligent low-voltage switch cabinet, the cabinet body is cooled through the cooling assembly, cooling gas can be recycled in the whole process, energy is saved, the whole device is automatically controlled, and the cooling gas cannot permeate to the outside in the cooling process of the cooling gas, so that the cooling efficiency is improved, resources are saved, and the economic benefit is improved; the switch cabinet can automatically control the on-off of the current according to the temperature in the cabinet body, so as to protect the safety of components and circuits in the switch cabinet, and meanwhile, the switch cabinet has the advantages of simple and reasonable structure, low cost, good effect and strong practicability; after taking place the condition of a fire in the cubical switchboard, can be timely put out, can avoid the condition of a fire to extend to external environment in, and then avoid causing bigger calamity, whole process of putting out a fire does not need electric control, even consequently the circuit is blown also can not influence the function of putting out a fire, and the practicality is strong, and the effect is better.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings of the embodiments can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic perspective view of a switchgear;
FIG. 2 is a schematic view of another perspective structure of the switch cabinet;
FIG. 3 is a schematic view of the internal structure of the cooling chamber;
FIG. 4 is a schematic diagram of an internal front view of the circuit breaker;
FIG. 5 is a schematic diagram of an internal three-dimensional structure of the circuit breaker;
FIG. 6 is a schematic cross-sectional view of an aerosol spray dispenser;
FIG. 7 is a flow chart of a method of measuring temperature of a switchgear;
FIG. 8 is a flow chart of a method of measuring temperature of a switchgear;
the reference numerals are explained below: 101. a cabinet body; 102. a thermal radiation receiver; 103. a cooling chamber; 104. a condenser; 105. an air outlet pipe; 106. an air inlet pipe; 107. a circuit breaker; 108. a housing; 109. a first heat conversion sheet; 201. a first push rod; 202. an elastic sheet; 203. a first mounting seat; 204. a fixed contact; 205. a movable contact; 206. a chute; 207. an aerosol sprayer; 208. a second heat conversion sheet; 209. a second push rod; 301. a spray head; 302. a gas storage cavity; 303. a plug; 304. a locking washer; 305. a delivery conduit; 306. and (5) controlling the system.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and the detailed description, wherein the drawings are simplified schematic drawings and only the basic structure of the present invention is illustrated schematically, so that only the structure related to the present invention is shown, and it is to be noted that the embodiments and features of the embodiments in the present application can be combined with each other without conflict.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting of the scope of the present application. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.
In the description of the present application, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art through specific situations.
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
The first embodiment is as follows:
the invention provides a multifunctional outdoor intelligent low-voltage switch cabinet, which comprises a cabinet body 101, and a temperature measuring component, a cooling component, a circuit breaking component, a fire-fighting component and a control system 306 which are arranged on the cabinet body 101.
As shown in fig. 1, 2 and 3, the temperature measurement assembly includes a thermal radiation receiver 102, a converter and a signal processor, the thermal radiation receiver 102 is used for measuring thermal radiation light emitted by components in the cabinet 101 to obtain corresponding thermal radiation optical signals, the thermal radiation optical signals are converted into corresponding electrical signals through the converter, and then the electrical signals are subjected to fitting analysis through the signal processor to obtain temperature data and temperature distribution conditions inside the cabinet 101.
The cooling assembly comprises a cooling cavity 103 and a condenser 104, an output end of the condenser 104 is connected with an air outlet pipe 105 in a matching mode, an input end of the condenser 104 is connected with an air inlet pipe 106 in a matching mode, the air outlet pipe 105 is connected to the bottom of the cooling cavity 103, and the air inlet pipe 106 is connected to the top of the cooling cavity 103, so that air in the cooling cavity 103 can flow on the condenser 104 in a circulating mode.
The gas in the cooling cavity 103 enters the condenser 104 through the gas inlet pipe 106, is cooled by the condenser 104, and then flows back to the cooling cavity 103 through the gas outlet pipe 105, and the gas outlet pipe 105 is provided with a pressure sensor.
It should be noted that, when the switch cabinet is operated for a long time, the phenomena of overload operation, switch aging and the like inevitably occur, and the phenomena easily cause the local temperature inside the switch cabinet to rise, so that potential safety hazards occur, and if the potential safety hazards are not eliminated in time, a fire disaster is easily caused. This device passes through the inside temperature data of thermal radiation receiving instrument 102 cubical switchboard cabinet 101 and the temperature distribution condition, when the internal temperature data of cabinet 101 reaches a certain predetermined threshold value, control system 306 controls condenser 104 work, make condenser 104 prepare cooling gas, make cooling gas enter into cooling chamber 103 by condenser 104's outlet duct 105 in, thereby to the cooling of cooling in the cabinet body 101, and cooling chamber 103 is inside to be the interlayer space, consequently cooling gas can not permeate to the outside of cubical switchboard, very big improvement cooling efficiency. The whole cooling process is realized by the following steps: after cooling gas entered the bottom of cooling chamber 103 through outlet duct 105 of condenser 104, cooling gas can be filled up whole cooling chamber 103 by supreme packing, and then make the hot gas of cooling chamber 103 discharge by the cooling chamber 103 top (this process has utilized the principle that the total mass of cooling gas is greater than the total mass of hot gas), then the hot gas just takes away the heat in the cabinet body 101, and then accomplish the cooling process, and hot gas can be discharged to condenser 104 in by in the intake pipe 106, cool off the back through condenser 104 to the hot gas, again by discharging back to cooling chamber 103 in outlet duct 105, cooling gas can cyclic utilization in the whole process, the energy can be saved more, whole device is automated control, cooling gas can not permeate to the outside, and then improve cooling efficiency, and resources are saved, and economic benefits are improved. It should be noted that the condenser is provided with an air outlet pump and an air pump, the air outlet pump can pump the cooling air prepared by the condenser to the bottom of the cooling cavity along the air outlet pipe 105, and the air pump can pump the air in the cooling cavity to the condenser along the air inlet pipe 106.
It should be noted that, be provided with pressure sensor on the outlet duct 105 of condenser 104, if the air outlet pump on condenser 104 damages unable back of working because of various reasons, the cooling gas that condenser 104 prepared just can't be taken out to the cooling intracavity along the outlet duct, outlet duct 105 just can not have the cooling gas to pass through this moment, the data that pressure sensor detected this moment just can be zero, pressure sensor just can be on signal transmission 306 this moment, on sending the fault information that the air outlet pump has damaged to long-range client, make the user can quick definite fault location, do not need gradual investigation, save time.
As shown in fig. 4 and 5, the circuit breaking assembly includes a circuit breaking switch 107, the circuit breaking switch 107 is connected to the bus of the switch cabinet, and the circuit breaking switch 107 can cut off the total line current of the switch cabinet.
The circuit breaker 107 includes a housing 108, a first thermal change piece 109, a first push rod 201, an elastic piece 202 and a first mounting seat 203 are arranged in the housing 108, one end of the first push rod 201 is connected with the first thermal change piece 109 in a matching way, the other end of the first push rod is connected with the elastic piece 202 in a matching way, two ends of the first thermal change piece 109 are fixed on the first mounting seat 203, the elastic piece 202 comprises a movable piece and a fixed piece, the fixed piece is fixedly connected on the inner wall of the housing 108, and the movable piece can be slid in the housing 108.
The circuit breaker 107 further includes a fixed contact 204 and a movable contact 205, the fixed contact 204 is fixed on the housing 108 through a fixing seat, the movable contact 205 is disposed on the movable plate, a sliding slot 206 is disposed at the bottom of the housing 108, a protruding block is disposed on the movable contact 205, the protruding block is embedded in the sliding slot 206, so that the movable contact 205 can move up and down along the sliding slot 206, and photoelectric sensors are disposed in the sliding slot 206 at intervals along the length direction.
The fixed contact 204 is connected with an input line of the switch cabinet internal bus in a matching way, and the movable contact 205 is connected with an output line of the switch cabinet internal bus in a matching way, so that the current of the switch cabinet internal bus can be cut off after the movable contact 205 is separated from the fixed contact 204.
In addition, when an abnormal condition such as a severe overload occurs in a circuit, the temperature of components in the switch cabinet is suddenly and rapidly increased, and if the temperature of the circuit is simply reduced by the cooling module, the temperature of the circuit may not be reduced in time, and the components may be burned or even a fire may occur, so that the power-off process of the main circuit in the switch cabinet needs to be performed by the circuit breaker 107 in order to protect the safety of the circuit and the components.
The operating principle of the circuit breaker 107 is as follows: when the temperature in the switch cabinet body 101 is higher than a certain specific value, the first thermal change sheet 109 is instantly deformed to push the first push rod 201, so that the first push rod 201 pushes the movable sheet on the elastic sheet 202, the movable contact 205 slides downwards, the movable contact 205 is separated from the fixed contact 204, and the current in the main circuit of the switch cabinet is disconnected; when the temperature in the switch cabinet is reduced to a certain specific value, the first thermal change sheet 109 deforms and rebounds to the initial state, and meanwhile, the first push rod 201 is pushed to move upwards through the elastic force of the elastic sheet 202, so that the movable contact 205 slides upwards, the movable contact 205 is further contacted with the fixed contact 204, and then the current in the main circuit in the switch cabinet is restored to be connected. Therefore, the switch cabinet can automatically control the on-off of the current according to the temperature in the cabinet body 101, can intelligently protect the safety of components and circuits in the switch cabinet, and has the advantages of simple and reasonable structure, low cost, good effect and strong practicability.
It should be noted that the sliding groove 206 is provided with photoelectric sensors at intervals along the length direction, and the photoelectric sensors are interconnected by signals, so that whether the elastic piece 202 has a failure can be detected by the photoelectric sensors. For example, when the elastic piece 202 loses elasticity or the elastic force is weakened, after the first thermal change piece 109 returns to the initial state, if the current in the switch cabinet still cannot be recovered, the position information of the movable contact 205 is checked through the photoelectric sensor, and it can be analyzed whether the movable contact 205 cannot slide to the original position due to the loss of elasticity according to the position information of the movable contact 205, so that a maintainer can efficiently and accurately repair and replace the movable contact 205 without checking faults one by one, and the maintenance efficiency is improved.
As shown in fig. 6, the fire fighting module includes an aerosol sprayer 207, the aerosol sprayer 207 is detachably mounted on the upper portion inside the cabinet 101, and the aerosol sprayer 207 can perform fire extinguishing treatment on the switch cabinet.
The spray head 301 is connected with the gas storage cavity 302 through a conveying pipeline 305, and an air outlet of the conveying pipeline 305 is tightly plugged through a plug 303.
The gas storage chamber 302 is filled with a compressed fire extinguishing gas, such as carbon dioxide gas, and the plug 303 can block the outlet of the delivery pipe 305. When the electric current sharply increases suddenly in the circuit, the temperature of components and parts can sharp increase in the cubical switchboard this moment, after the temperature is higher than the ignition point of electric wire or components and parts, even carry out the outage through circuit breaker 107 to the master circuit in the cubical switchboard this moment and handle, the condition of a fire still can take place in the cubical switchboard, if the condition of a fire in the cabinet body 101 of putting out of time, then the condition of a fire just very probably extends the external environment, and then lead to the fact bigger condition of a fire, thereby cause bigger economic loss, and the cubical switchboard is installed at open air, people are difficult for discovering the condition of a fire and the rescue that is difficult for quick is put out a fire. Therefore, it is necessary to install an intelligent gas mist sprayer 207 in the switch cabinet to automatically extinguish the fire.
It should be noted that, during the in-service use, can acquire the material information of each components and parts in the cubical switchboard in advance, determine the ignition point of each components and parts according to the material information of each components and parts, then select minimum ignition point from the middle of, and mark this minimum ignition point as the temperature value of catching fire, after the temperature in the cubical switchboard is greater than the temperature value of catching fire, then explain that the condition of fire has taken place in the cubical switchboard, aerial fog sprayer 207 just can put out a fire to in the cubical switchboard this moment. The operating principle of aerosol sprayer 207 is: when temperature is greater than or equal to the temperature value of catching fire in the cubical switchboard, thereby second heat distortion piece 208 warp in the twinkling of an eye promotes second push rod 209, make second push rod 209 upwards promote, lock gasket 304 can infer under the thrust of second push rod 209, and then make lock gasket 304 not having the locking effect, make end cap 303 also along with second push rod 209 rebound, at this moment, compressed gas in the gas storage chamber 302 just can be along with pipeline 305 blowout, then compressed gas is by further pressurizing again through shower nozzle 301 thereby the blowout to the cabinet body 101 of cubical switchboard, and then accomplish the function of putting out a fire. So, after taking place the condition of a fire in the cubical switchboard, just can in time put out a fire through aerial fog sprayer 207, can avoid the condition of a fire to extend to external environment in, can avoid causing bigger calamity, whole process of putting out a fire does not need power control, consequently even the circuit is blown also can not influence the function of putting out a fire, and the practicality is strong, and the effect is better. In addition, if a fire occurs in the switch cabinet, the control system 306 can send alarm information to a remote user terminal to inform the user of overhauling the switch cabinet and timely replace the new aerosol sprayer 207.
It should be noted that the deformation temperature of first heat variation patch 109 is less than the deformation temperature of second heat variation patch 208, and the deformation temperature of first heat variation patch may be selected according to actual use conditions, but the deformation temperature thereof needs to be lower than the ignition temperature value. When the temperature in the cabinet does not reach the fire temperature value, which indicates that no fire occurs in the cabinet, the circuit breaker 107 triggers the power-off treatment of the cabinet without triggering the aerosol injector 207; if the temperature in the cabinet body rises sharply within a very short time and is higher than the fire temperature value, it indicates that a fire has occurred in the cabinet body, and at this time, the circuit breaker 107 triggers the power-off treatment of the cabinet body and triggers the aerosol sprayer 207 to extinguish the cabinet body.
Example two:
the second aspect of the present invention provides a temperature measurement method for a multifunctional outdoor intelligent low-voltage switchgear, which is applied to any one of the multifunctional outdoor intelligent low-voltage switchgear, as shown in fig. 7, and includes the following steps:
s102: acquiring temperature information corresponding to a plurality of different areas through a thermal radiation receiver;
s104: determining a central point of the temperature active region and recording coordinate information of the central point according to the obtained temperature information;
s106: comparing the coordinate information of the central point with the coordinate information of each component in a database to determine the component with abnormal temperature;
s108: after determining the component with abnormal temperature, uploading the temperature abnormal information of the component to a control system, and recording the temperature abnormal information of the component by the control system to monitor the component in real time;
s110: and if the temperature abnormal accumulation times of the same component reach a first preset value or reach a second preset value within preset time, generating alarm information, and sending the alarm information to a remote user side by the control system.
The temperature abnormal information comprises the type and the position of an abnormal component and the total abnormal times of the abnormal component.
It should be noted that, in actual application, the position coordinates corresponding to each component may be determined in advance according to the installation position of each component in the switch cabinet, a database is established according to the position coordinates corresponding to each component, and then the data in the database is stored in the data storage library of the switch cabinet in advance.
It should be noted that, if a component in the switch cabinet suddenly generates heat due to an abnormality, the temperature is radiated from the center of the component, at this time, the temperature with the component as the center of the area is the highest, and the temperature around the component is gradually decreased, so that the temperature information of different areas in the switch cabinet can be detected in real time by the heat radiation receiver, if the temperature of a certain area suddenly increases, it is indicated that the component in the area is abnormal, it is indicated that the area is a temperature active area, at this time, the center of the area is calibrated and abnormal coordinate data is generated, then the abnormal coordinate data is imported into the database, the abnormal coordinate data is compared with the position coordinate data in the database, and it is determined which component is abnormal, and then the abnormal information is recorded. If a certain component only happens to be in abnormal temperature condition accidentally and the total abnormal times of the component is not more than five times, the abnormal conditions are possibly caused by external factors, and at the moment, the component is still in a safe range and does not need to be overhauled; when a certain unitary device is abnormal for three times or more than three times continuously in a short time, the component is described to have a fault, the component needs to be overhauled, or when the accumulated abnormal times of the component is more than five times, the internal parts of the component are damaged to a certain extent under the influence of multiple high temperatures, the component also needs to be repaired, at the moment, the control system 306 sends alarm information to a remote user end through a wireless end, the overhaul personnel is reminded to overhaul and replace the component in time, the switch cabinet has an automatic fault detection function, the safety of the switch cabinet is guaranteed, a fire disaster caused by the fault of the component can be avoided to a certain extent, and therefore great economic loss is formed. It should be noted again that, when a certain component in the switch cabinet body 101 has a high temperature due to an abnormality, although the component can be cooled by the cooling module, if the number of times of the abnormality occurrence of the component is accumulated to five times, it is described that the component may have abnormal conditions such as aging, overload, and the like, and at this time, for safety, a maintenance worker needs to be reminded to repair and replace the component, so that the probability of causing a fire is reduced, and a greater economic loss is avoided.
Wherein, gather the temperature information that a plurality of different regions correspond through the thermal radiation receiving instrument, as shown in fig. 8, still include the following step:
s202: acquiring thermal radiation light emitted by different areas in the cabinet body through a thermal radiation receiver to obtain an electric signal corresponding to a thermal radiation light signal;
s204: amplifying and filtering the electric signal;
s206: fitting and analyzing the electric signals through a signal processor to obtain temperature data and temperature distribution conditions inside the cabinet body;
s208: according to the temperature data, the interior of the cabinet body is cooled through the cooling assembly, so that the temperature in the cabinet body is kept within a certain range.
When the temperature data is smaller than a first preset threshold value, the cooling assembly does not cool the cabinet body; when the temperature data is larger than a first preset threshold and smaller than a second preset threshold, the cooling assembly cools the cabinet body at a first cooling rate; when the temperature data is greater than a second pre-threshold, the cooling assembly cools the cabinet at a second cooling rate.
After the thermal radiation receiver 102 detects the temperature data in the cabinet 101, the control system 306 specifies the corresponding processing measures according to the temperature data. When the temperature data is smaller than a first preset threshold, it is indicated that the cabinet body 101 can perform heat dissipation and cooling through the heat dissipation holes of the cabinet body 101, and the cabinet body 101 does not need to be cooled through a cooling assembly; when the temperature data is greater than the first preset threshold and less than the second preset threshold, the temperature is still within a relatively safe range, but at this time, the heat dissipation holes of the cabinet body 101 cannot be effectively cooled, and the cooling assembly needs to be started to cool the cabinet body 101; when temperature data is greater than the second preset threshold, it shows that the temperature is already in a dangerous scope at this moment, and the cabinet body 101 needs to be rapidly cooled by a cooling assembly at a high cooling rate, so that the situation that components are burnt due to overhigh temperature or even fire is caused is avoided. It should be noted that, can go out air pump and aspiration pump power size and then adjust the cooling rate size through adjusting the condenser, for example when needs cool off the cabinet body 101 with great cooling rate, can increase the power of going out air pump and aspiration pump in the condenser, and then accelerate gaseous speed at the cooling chamber circulation, and then accelerate the cold and hot exchange's of cooling chamber efficiency, and then increase the cooling rate to the cabinet body.
While the foregoing is directed to embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (8)
1. The utility model provides a multi-functional outdoor intelligence low-voltage switchgear, includes the cabinet body and sets up temperature measurement subassembly, cooling module, the subassembly that opens circuit, fire control subassembly and the control system on the cabinet body, its characterized in that:
the temperature measurement assembly comprises a thermal radiation receiver, a converter and a signal processor, wherein the thermal radiation receiver is used for measuring thermal radiation light emitted by components in the cabinet body to obtain corresponding thermal radiation optical signals, the thermal radiation optical signals are converted into corresponding electric signals through the converter, and the electric signals are subjected to fitting analysis through the signal processor to obtain temperature data and temperature distribution conditions in the cabinet body;
the cooling assembly comprises a cooling cavity and a condenser, an output end of the condenser is connected with an air outlet pipe in a matching way, an input end of the condenser is connected with an air inlet pipe in a matching way, the air outlet pipe is connected to the bottom of the cooling cavity, and the air inlet pipe is connected to the top of the cooling cavity, so that the air in the cooling cavity can circularly flow on the condenser;
the circuit breaking assembly comprises a circuit breaking switch, the circuit breaking switch is connected to a bus circuit of the switch cabinet, and the circuit breaking switch can cut off the main circuit current of the switch cabinet;
the fire-fighting assembly comprises an aerosol sprayer which is detachably arranged above the inside of the cabinet body, and the aerosol sprayer can perform fire extinguishing treatment on the switch cabinet;
the aerosol sprayer comprises a second thermal deformation sheet, a second push rod, a spray head and a gas storage cavity, wherein one end of the second push rod is connected with the second thermal deformation sheet in a matched mode, the second thermal deformation sheet is fixedly installed at the bottom of the aerosol sprayer through a second installation seat, the other end of the second push rod is connected with a plug in a matched mode, and a locking gasket is arranged below the plug;
the spray head is connected with the gas storage cavity through a conveying pipeline, and a gas outlet of the conveying pipeline is tightly blocked through a plug.
2. The multifunctional outdoor intelligent low-voltage switch cabinet according to claim 1, characterized in that: the interior gas of cooling chamber gets into the condenser through the intake pipe and after the condenser cooling, rethread outlet duct flows back to the cooling intracavity, be provided with pressure sensor on the outlet duct.
3. The multifunctional outdoor intelligent low-voltage switch cabinet according to claim 1, characterized in that: the circuit breaker comprises a shell, wherein a first heat change piece, a first push rod, an elastic piece and a first mounting seat are arranged in the shell, one end of the first push rod is connected with the first heat change piece in a matched mode, the other end of the first push rod is connected with the elastic piece in a matched mode, two ends of the first heat change piece are fixed on the first mounting seat, the elastic piece comprises a movable piece and a fixed piece, the fixed piece is fixedly connected to the inner wall of the shell, and the movable piece can be arranged in the shell in an sliding mode.
4. A multifunctional outdoor intelligent low-voltage switchgear, according to claim 3, characterized in that: the circuit breaker further comprises a fixed contact and a movable contact, the fixed contact is fixed on the shell through a fixing seat, the movable contact is arranged on the movable piece, a sliding groove is formed in the bottom of the shell, a protruding block is arranged on the movable contact and embedded into the sliding groove, so that the movable contact can move up and down along the sliding groove, and photoelectric sensors are arranged in the sliding groove at intervals along the length direction.
5. The multifunctional outdoor intelligent low-voltage switch cabinet according to claim 4, characterized in that: the fixed contact is connected with an input line of the switch cabinet internal bus in a matching way, and the movable contact is connected with an output line of the switch cabinet internal bus in a matching way, so that the current of the switch cabinet internal bus can be cut off after the movable contact is separated from the fixed contact.
6. A temperature measuring method of a multifunctional outdoor intelligent low-voltage switch cabinet is applied to the multifunctional outdoor intelligent low-voltage switch cabinet as claimed in any one of claims 1 to 5, and is characterized by comprising the following steps:
acquiring temperature information corresponding to a plurality of different areas through a thermal radiation receiver;
determining a central point of the temperature active region and recording coordinate information of the central point according to the obtained temperature information;
comparing the coordinate information of the central point with the coordinate information of each component in a database to determine the component with abnormal temperature;
after determining the component with abnormal temperature, uploading the temperature abnormal information of the component to a control system, and recording the temperature abnormal information of the component by the control system to monitor the component in real time;
and if the temperature abnormal accumulation times of the same component reach a first preset value or reach a second preset value within preset time, generating alarm information, and sending the alarm information to a remote user side by the control system.
7. The method as claimed in claim 6, wherein the thermal radiation receiver collects temperature information corresponding to a plurality of different areas, further comprising the steps of:
acquiring thermal radiation light emitted by different areas in the cabinet body through a thermal radiation receiver to obtain an electric signal corresponding to a thermal radiation light signal;
amplifying and filtering the electric signal;
fitting and analyzing the electric signals through a signal processor to obtain temperature data and temperature distribution conditions inside the cabinet body;
according to the temperature data, the cabinet body is cooled through the cooling assembly, so that the temperature in the cabinet body is kept within a certain range.
8. The method for measuring the temperature of the multifunctional outdoor intelligent low-voltage switch cabinet according to claim 6, wherein the method comprises the following steps: when the temperature data is smaller than a first preset threshold value, the cooling assembly does not cool the cabinet body; when the temperature data is larger than a first preset threshold and smaller than a second preset threshold, the cooling assembly cools the cabinet body at a first cooling rate; when the temperature data is greater than a second pre-threshold, the cooling assembly cools the cabinet at a second cooling rate.
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| CN114650693B (en) * | 2022-05-18 | 2022-08-16 | 深圳市泛联信息科技有限公司 | Server cabinet system with intelligent identification function and method |
| CN116069079B (en) * | 2023-04-06 | 2023-07-25 | 山东海冠电气有限公司 | Intelligent heat dissipation control method and system for intelligent switch cabinet |
| CN116594445B (en) * | 2023-07-18 | 2023-10-10 | 湘潭宏光变流电气有限公司 | Intelligent monitoring and temperature control system for rectifier cabinet unit |
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| JPH0865825A (en) * | 1994-08-26 | 1996-03-08 | Mitsubishi Electric Corp | Control panel |
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| US8953317B2 (en) * | 2011-10-26 | 2015-02-10 | International Business Machines Corporation | Wicking vapor-condenser facilitating immersion-cooling of electronic component(s) |
| CN202855553U (en) * | 2012-10-12 | 2013-04-03 | 浙江工贸职业技术学院 | Thin-film capacitor having self-protection function |
| DE102015100399B4 (en) * | 2015-01-13 | 2016-07-28 | Hochschule Für Technik Und Wirtschaft Berlin | Arrangement consisting of a fuse and arranged on the fuse measuring device and measuring device |
| CN105444914B (en) * | 2015-12-29 | 2018-01-23 | 江苏省电力公司电力科学研究院 | Transformer oil temperature detecting system |
| CN205984801U (en) * | 2016-07-22 | 2017-02-22 | 佛山市德沁电器有限公司 | Screw terminal temperature controller |
| CN108873978A (en) * | 2018-06-20 | 2018-11-23 | 国网江苏省电力有限公司泰州供电分公司 | A kind of power distribution cabinet detecting and controlling internal temperature state automatically |
| CN111446647A (en) * | 2020-03-20 | 2020-07-24 | 安徽富煌电力装备科技有限公司 | High-low voltage switch cabinet system based on Internet of things |
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| JPH0865825A (en) * | 1994-08-26 | 1996-03-08 | Mitsubishi Electric Corp | Control panel |
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