CN114610102A - Zero-loss depth current limiting device microcomputer type closed cooling system - Google Patents
Zero-loss depth current limiting device microcomputer type closed cooling system Download PDFInfo
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- CN114610102A CN114610102A CN202210264393.1A CN202210264393A CN114610102A CN 114610102 A CN114610102 A CN 114610102A CN 202210264393 A CN202210264393 A CN 202210264393A CN 114610102 A CN114610102 A CN 114610102A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D27/00—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00
- G05D27/02—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00 characterised by the use of electric means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
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Abstract
The application discloses zero-loss degree of depth current-limiting device microcomputer type closed cooling system includes: the device comprises a device main body, a gas circulation module and a control module; an insulating cylinder is arranged on the device main body. The gas circulation module leads hot gas in the insulating cylinder out through a hot gas pipeline, and makes cold air through the cooling chamber, and the cold air enters the insulating cylinder through a cold air pipeline, so that the circulation of cold and hot air in the insulating cylinder is accelerated, and the purpose of quickly opening and closing a vacuum in the quick cooling device is realized. The control module can monitor the hot gas temperature value, the cold gas humidity value and the particle density value, and can monitor whether the gas circulation module is abnormal or not in real time. Simultaneously, through set up the filter screen that can dismantle the change between gas circulating pump and air conditioning pipeline, can reduce in the dust that produces because of the pipe-sealing is bad enters into the insulating cylinder, solve current zero loss degree of depth current limiting device and can't compromise the convenient problem that just avoids the dust to get into of heat dissipation.
Description
Technical Field
The application relates to the technical field of cooling systems, in particular to a microcomputer type closed cooling system of a zero-loss depth current limiting device.
Background
Along with the social and economic development, the scale of a power system is continuously enlarged, the connection of power grids of various voltage classes is increasingly tight, and the problem that the short-circuit current of the power grid system exceeds the rated breaking capacity of a breaker is more and more severe. When the short-circuit current of the bus of the transformer substation exceeds the standard, the power safety events such as explosion of a circuit breaker, damage of electrical equipment and the like can be caused by the fact that the feeder circuit breaker is opened and closed to avoid exceeding the standard, and economic loss can be caused.
The zero-loss deep current limiting device is a device for automatically and quickly switching on and off a deep current limiting reactor, the current limiting reactor is switched in through a quick switch at the initial stage of a short-circuit fault to limit the short-circuit current in a reliable range, and the current limiting reactor automatically exits after the fault is cut off, so that the normal operation of a power grid is not influenced.
The quick switch, the current transformer and the conducting bar of the zero-loss depth current limiting device are hermetically arranged in an insulating cylinder above the device. When the device normally operates, the fast switch and the conducting bar flow through a larger main transformer variable load current for a long time to continuously generate heat; when short circuit occurs, the fast switch is switched off, and the arc generated by cutting off the short circuit current releases huge heat. If the heat generated during normal operation and short-circuit fault removal cannot be dissipated in time when the vacuum bulb is sealed in the insulating cylinder, the vacuum bulb of the quick switch and the connecting part of the conducting bar are thermally damaged, so that accidents such as power failure and the like are caused, and serious accidents such as equipment explosion and the like can be caused due to heating. Therefore, heat dissipation problems of fast switches in zero-loss deep current limiting devices are a concern for the skilled artisan.
At present, a zero-loss deep current limiting device mostly adopts a closed structure and an open type heat radiation mode, namely, heat radiation is carried out by directly carrying out heat exchange between a device shell and air; however, the heat will be accumulated gradually when the quick switch and the conducting bar in the device flow through the main transformer and the low current for a long time, and the huge heat generated at the moment when the quick breaker cuts off the short-circuit current in the device can not be discharged in time. If the zero-loss deep current limiting device adopts ventilation and heat dissipation, the insulation strength of the quick switch can be reduced due to accumulation of moist air and dust, the free breakdown and other faults can be caused, and the accidents such as insulation breakdown, short circuit explosion and the like can be caused seriously.
Disclosure of Invention
In view of this, an object of the present application is to provide a microcomputer type closed cooling system for a zero-loss deep current limiting device, which is used to solve the problem that the existing zero-loss deep current limiting device cannot consider both the convenience of heat dissipation and the prevention of dust entering.
To achieve the above technical object, the present application provides a microcomputer type closed cooling system for a zero-loss deep current limiting device, including: the device comprises a device main body, a gas circulation module and a control module;
an insulating cylinder is arranged on the device main body;
the gas circulation module includes: a hot gas duct, a cold gas duct and a cooling chamber;
the air inlet of the hot air pipeline is positioned above the inside of the insulating cylinder and is in an inverted funnel shape;
the air outlet of the hot air pipeline is communicated with the upper part of the cooling chamber;
the air inlet of the cold air pipeline is communicated with the lower part of the cooling chamber;
the air outlet of the cold air pipeline is positioned below the inside of the insulating cylinder and is funnel-shaped;
a refrigerating piece is arranged on the cooling chamber, and a gas circulating pump is arranged in the cooling chamber;
a detachable filter screen is arranged between the gas circulating pump and the cold air pipeline;
the control module includes: the device comprises a processor, a temperature sensor, a temperature and humidity sensor and a dust detector;
the temperature sensor is arranged at the air inlet of the hot air pipeline and used for collecting the hot air temperature value of the gas entering the hot air pipeline;
the temperature and humidity sensor is arranged at the air inlet of the cold air pipeline and is used for collecting the cold air temperature value and the cold air humidity value of the gas entering the cold air pipeline;
the dust detector is arranged at the gas inlet of the gas circulating pump and is used for collecting the particle density value of the gas entering the gas circulating pump;
the treater set up in on the device main part, and with temperature sensor, temperature and humidity sensor and dust detector all communication connection.
Further, the control module further comprises: a display;
the display is arranged on the device main body, is electrically connected with the processor and is used for displaying the temperature information, the temperature and humidity information and the particle density information.
Further, the processor is used for displaying a high temperature alarm signal through the display when the hot gas temperature value is higher than a preset high temperature value within a preset time length;
the processor is also used for displaying a humidity alarm signal through the display when the cold air humidity value exceeds a preset temperature and humidity range value;
the processor is also used for displaying a refrigeration abnormal signal through the display when the temperature difference between the hot gas temperature value and the cold gas temperature value is smaller than a preset temperature difference value;
the processor is further configured to display a seal anomaly signal via the display when the particle density value exceeds a preset particle value.
Further, the refrigerating piece is a semiconductor refrigerating piece;
the semiconductor refrigerating sheet is attached to the outer surface of the cooling chamber, and the refrigerating surface is in contact with the cooling chamber;
the processor is connected with the semiconductor refrigerating piece point and used for controlling the starting and stopping of the semiconductor refrigerating piece.
Further, the cooling chamber is a vertical cuboid.
Further, the power supply stabilizing module is further included;
the power stabilizing module includes: a voltage regulator and a voltage stabilizer;
the voltage regulator and the voltage stabilizer are connected between the power input end and the control module.
Further, the outside of the filter screen is provided with a rubber sealing layer.
Further, the hot air pipeline and the cold air pipeline are both made of heat-resistant pipes and are wrapped by heat-insulating materials and insulating materials.
Further, the cooling chamber is in threaded connection with the cold air pipeline and the hot air pipeline, and the joints are sealed through rubber gaskets.
Further, a plurality of the gas circulation pumps are arranged in the cooling chamber.
According to the above technical solution, the present application provides a zero-loss deep current limiting device microcomputer type closed cooling system, including: the device comprises a device main body, a gas circulation module and a control module; an insulating cylinder is arranged on the device main body. The gas circulation module leads hot gas in the insulating cylinder out through a hot gas pipeline, and makes cold air through the cooling chamber, and the cold air enters the insulating cylinder through a cold air pipeline, so that the circulation of cold and hot air in the insulating cylinder is accelerated, and the purpose of quickly opening and closing a vacuum in the quick cooling device is achieved. The control module can monitor the hot gas temperature value, the cold gas humidity value and the particle density value, and can monitor whether the gas circulation module is abnormal or not in real time. Simultaneously, through set up the filter screen that can dismantle the change between gas circulating pump and air conditioning pipeline, can reduce in the dust that produces because of the seal for pipe joints is bad enters into the insulating cylinder, solve current zero loss degree of depth current limiting device and can't compromise the heat dissipation and make things convenient for and avoid the problem that the dust got into.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a microcomputer-type closed cooling system of a zero-loss deep current limiting device according to an embodiment of the present disclosure;
fig. 2 is an enlarged view of a cooling chamber structure of a microcomputer-type closed cooling system of a zero-loss deep current limiting device according to an embodiment of the present disclosure;
fig. 3 is a start-stop control flowchart of a microcomputer-type closed cooling system of a zero-loss deep current limiting device according to an embodiment of the present disclosure.
Detailed Description
The technical solutions of the embodiments of the present application will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are some, but not all embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the scope of protection claimed herein.
In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the embodiments of the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the embodiments of the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present application, it should be noted that the terms "mounted," "connected," and "connected" are used broadly and are defined as, for example, a fixed connection, an exchangeable connection, an integrated connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, and a communication between two elements, unless otherwise explicitly stated or limited. Specific meanings of the above terms in the embodiments of the present application can be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1, an embodiment of the present application discloses a microcomputer type closed cooling system for a zero-loss deep current limiting device, including: the device comprises a device main body 1, a gas circulation module 2 and a control module 3; the apparatus main body 1 is provided with an insulating cylinder 11. The device main body 1 may include a mechanism box, an insulating base, an upper flange 12 and a lower flange 13, the insulating cylinder 11 is mounted on the mechanism box through the lower flange, the mechanism box is disposed on the insulating base, and the upper flange 12 is hermetically mounted on the insulating cylinder 11. A current limiting reactor may be disposed outside the insulating cylinder 11.
The gas circulation module 2 includes: a hot gas duct 21, a cold gas duct 22, and a cooling chamber 23; the air inlet of the hot air pipeline 21 is positioned above the inside of the insulating cylinder 11 and is in an inverted funnel shape; the air outlet of the hot air pipeline 21 is communicated with the upper part of the cooling chamber 23; the air inlet of the cold air pipeline 22 is communicated with the lower part of the cooling chamber 23; the air outlet of the cold air pipeline 22 is positioned below the inside of the insulating cylinder 11 and is funnel-shaped; the cooling chamber 23 is provided with a refrigerating piece 24, and a gas circulating pump 25 is arranged in the cooling chamber; a detachable filter screen 26 is arranged between the gas circulation pump 25 and the cold air pipeline 22.
Specifically, in the present embodiment, the cooling member 24 is a semiconductor cooling plate; the semiconductor refrigeration piece is attached to the outer surface of the cooling chamber 23, and the refrigeration surface is in contact with the cooling chamber 23. The hot air pipeline 21 and the cold air pipeline 22 are made of heat-resistant pipes and wrapped by heat-insulating materials and insulating materials, so that a heat-insulating effect can be achieved, and mutual influence of hot air in the hot air pipeline 21 and cold air in the cold air pipeline 22 is prevented. In the present embodiment, the gas circulation pump 25 is in the unidirectional circulation mode, and the gas flow direction is ensured.
By providing the detachable filter net 26, it is possible to prevent dust entering the duct from entering the insulating cylinder 11 due to poor sealing of the duct. And, the both sides of filter screen can cladding rubber seal.
The control module 3 includes: a processor 31, a temperature sensor 33, a temperature and humidity sensor 32, and a dust detector 34; the temperature sensor 33 is arranged at the air inlet of the hot air pipeline 21 and is used for collecting the hot air temperature value of the gas entering the hot air pipeline 21; the temperature and humidity sensor 32 is disposed at an air inlet of the cold air duct 22, and is configured to collect a cold air temperature value and a cold air humidity value of the air entering the cold air duct 22; the dust detector 34 is arranged at the gas inlet of the gas circulating pump 25 and is used for collecting the particle density value of the gas entering the gas circulating pump 25; the processor 31 is disposed on the apparatus main body 1, and is in communication connection with the temperature sensor 33, the temperature and humidity sensor 32, and the dust detector 34. The processor 31 is electrically connected to the semiconductor chilling plates and used for controlling the start and stop of the semiconductor chilling plates, for example, the processor 31 may be connected to the auxiliary contact of the vacuum fast switch of the zero-loss deep current limiting device 18 to collect a switch action signal and control the start of the gas circulation pump 25 and the semiconductor chilling plates.
Specifically, the external structure of the cooling chamber 23 is as shown in fig. 2, the cooling chamber 23, the cold air duct 22 and the hot air duct 21 are all in threaded connection through nuts 4, and the joints are sealed by rubber gaskets, so that the sealing connection effect is achieved, and dust is prevented from entering the pipeline.
Further, the control module 3 further includes: a display; the display is disposed on the device body 1, and electrically connected to the processor 31, and is configured to display temperature information, temperature and humidity information, and particle density information.
The gas circulation module 2 can be monitored by the control module 3. Particularly, the processor 31 can monitor the hot gas temperature value in the hot gas pipeline 21 through the temperature sensor 33, and when the hot gas temperature value is in the preset time span, if all be higher than in twenty minutes when presetting the high temperature value, then show high temperature alarm signal through the display, when the cold air humidity value surpasses preset humiture scope value, show humidity alarm signal through the display, when the difference in temperature of hot gas temperature value and cold air temperature value is less than preset the temperature difference value, show refrigeration anomaly signal through the display, and when granule density value surpassed preset granule value, show sealed anomaly signal through the display, thereby when arbitrary again appearing unusually, the staff can obtain the abnormal conditions through the display, in time make the adjustment. The processor 31 may send the abnormal warning signal to the background monitor of the substation through the optocoupler relay and the common measurement and control device of the substation when monitoring the abnormality.
Further, the processor can be used for controlling the starting and stopping of the refrigerating element 24 according to the hot gas temperature value, the cold air temperature value and the cold air humidity value.
Specifically, the processor 31 may also be configured to control the refrigeration element 24 to start when the hot air temperature value exceeds a preset high temperature start threshold value, for example, 50 degrees celsius, or when a vacuum fast switch in the zero-loss deep current limiting device performs a switching on/off operation.
Further, the cooling chamber 23 is a vertical rectangular parallelepiped, that is, the cooling chamber 23 is a flat cube to enlarge a contact area of the gas flowing through the cooling chamber 23 and the cooling chamber 23.
Further, the power supply stabilizing module is also included; the power stabilizing module includes: a voltage regulator and a voltage stabilizer; the voltage regulator and the voltage stabilizer are connected between the power input end and the control module 3.
Further, a plurality of gas circulating pumps 25 are arranged in the cooling chamber 23, so that the condition that one gas circulating pump 25 is damaged to cause the system to be incapable of working is prevented.
The flow chart of the start and stop of the microcomputer type closed cooling system of the zero-loss depth current limiting device provided by the scheme is shown in fig. 3, and when the cold air temperature value received by the processor is lower than the low-temperature stop threshold value, for example, 20 ℃, the gas circulating pump 25 and the refrigerating element 24 are controlled to stop working.
Although the present invention has been described in detail with reference to examples, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention.
Claims (10)
1. A zero-loss deep current limiting device microcomputer type closed cooling system is characterized by comprising: the device comprises a device main body, a gas circulation module and a control module;
an insulating cylinder is arranged on the device main body;
the gas circulation module includes: a hot gas duct, a cold gas duct and a cooling chamber;
the air inlet of the hot air pipeline is positioned above the inside of the insulating cylinder and is in an inverted funnel shape;
the air outlet of the hot air pipeline is communicated with the upper part of the cooling chamber;
the air inlet of the cold air pipeline is communicated with the lower part of the cooling chamber;
the air outlet of the cold air pipeline is positioned below the inside of the insulating cylinder and is funnel-shaped;
a refrigerating piece is arranged on the cooling chamber, and a gas circulating pump is arranged in the cooling chamber;
a detachable filter screen is arranged between the gas circulating pump and the cold air pipeline;
the control module includes: the device comprises a processor, a temperature sensor, a temperature and humidity sensor and a dust detector;
the temperature sensor is arranged at the air inlet of the hot air pipeline and used for collecting the hot air temperature value of the gas entering the hot air pipeline;
the temperature and humidity sensor is arranged at the air inlet of the cold air pipeline and is used for collecting the cold air temperature value and the cold air humidity value of the gas entering the cold air pipeline;
the dust detector is arranged at the gas inlet of the gas circulating pump and is used for collecting the particle density value of the gas entering the gas circulating pump;
the treater set up in on the device main part, and with temperature sensor, temperature and humidity sensor and dust detector all communication connection.
2. The zero-loss, deep current limiting device, microcomputer-based closed cooling system of claim 1, wherein the control module further comprises: a display;
the display is arranged on the device main body, is electrically connected with the processor and is used for displaying the temperature information, the temperature and humidity information and the particle density information.
3. The microcomputer type closed cooling system for the zero-loss deep current limiting device according to claim 2, wherein the processor is configured to display a high temperature alarm signal through the display when the hot gas temperature value is higher than a preset high temperature value within a preset time period;
the processor is also used for displaying a humidity alarm signal through the display when the cold air humidity value exceeds a preset temperature and humidity range value;
the processor is also used for displaying a refrigeration abnormal signal through the display when the temperature difference between the hot gas temperature value and the cold gas temperature value is smaller than a preset temperature difference value;
the processor is further configured to display a seal anomaly signal via the display when the particle density value exceeds a preset particle value.
4. The microcomputer-type closed cooling system for the zero-loss deep current limiting device according to claim 1, wherein the refrigerating member is a semiconductor refrigerating sheet;
the semiconductor refrigerating sheet is attached to the outer surface of the cooling chamber, and the refrigerating surface is in contact with the cooling chamber;
the processor is connected with the semiconductor refrigerating piece point and used for controlling the starting and stopping of the semiconductor refrigerating piece.
5. The zero-loss depth current-limiting device microcomputer type closed cooling system according to claim 1, wherein the cooling chamber is a vertical cuboid.
6. The microcomputer-type closed cooling system for the zero-loss deep current limiting device according to claim 1, further comprising a power stabilizing module;
the power stabilizing module includes: a voltage regulator and a voltage stabilizer;
the voltage regulator and the voltage stabilizer are connected between the power input end and the control module.
7. The zero-loss deep flow-limiting device microcomputer type closed cooling system of claim 1, wherein a rubber sealing layer is arranged outside the filter screen.
8. The microcomputer-based closed cooling system for zero-loss deep current limiting devices of claim 1, wherein the hot air pipeline and the cold air pipeline are made of heat-resistant pipes and are wrapped with thermal insulation materials and insulating materials.
9. The microcomputer-based closed cooling system for zero-loss deep current limiting devices of claim 1, wherein the cooling chamber is in threaded connection with both the cold air duct and the hot air duct, and the joints are sealed by rubber gaskets.
10. The zero-loss deep current limiting device microcomputer type closed cooling system according to claim 1, wherein a plurality of the gas circulation pumps are provided in the cooling chamber.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210264393.1A CN114610102B (en) | 2022-03-17 | 2022-03-17 | Microcomputer type closed cooling system of zero-loss depth current limiting device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210264393.1A CN114610102B (en) | 2022-03-17 | 2022-03-17 | Microcomputer type closed cooling system of zero-loss depth current limiting device |
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| CN114610102B CN114610102B (en) | 2023-08-18 |
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| CN114610102B (en) | 2023-08-18 |
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