CN114744497B - Intelligent power distribution terminal and large-scale power grid safety guarantee system - Google Patents
Intelligent power distribution terminal and large-scale power grid safety guarantee system Download PDFInfo
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- CN114744497B CN114744497B CN202210434176.2A CN202210434176A CN114744497B CN 114744497 B CN114744497 B CN 114744497B CN 202210434176 A CN202210434176 A CN 202210434176A CN 114744497 B CN114744497 B CN 114744497B
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- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 185
- 239000001301 oxygen Substances 0.000 claims abstract description 185
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 106
- 238000009423 ventilation Methods 0.000 claims abstract description 60
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 53
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 53
- 238000002955 isolation Methods 0.000 claims abstract description 31
- 238000012544 monitoring process Methods 0.000 claims abstract description 22
- 238000004891 communication Methods 0.000 claims abstract description 13
- 238000000926 separation method Methods 0.000 claims description 62
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- 238000003860 storage Methods 0.000 claims description 11
- 238000012545 processing Methods 0.000 claims description 3
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- 239000007789 gas Substances 0.000 description 6
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- 238000010586 diagram Methods 0.000 description 2
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Classifications
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- 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
-
- 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
- A62C3/14—Fire prevention, containment or extinguishing specially adapted for particular objects or places in connection with doors, windows, ventilators, partitions, or shutters, e.g. automatic closing
-
- 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
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/36—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device
- A62C37/38—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C99/00—Subject matter not provided for in other groups of this subclass
- A62C99/0009—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames
- A62C99/0018—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames using gases or vapours that do not support combustion, e.g. steam, carbon dioxide
- A62C99/0027—Carbon dioxide extinguishers
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
- G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
- G08B25/08—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using communication transmission lines
-
- 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
- H02B1/46—Boxes; Parts thereof or accessories therefor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
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- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
The invention discloses an intelligent power distribution terminal and a large-scale power grid safety guarantee system, which realize monitoring and automatic fire extinguishing of fire conditions through an emergency protection device arranged in the intelligent power distribution terminal, realize oxygen isolation of an ignition area at the first time through releasing carbon dioxide, and realize control of the opening of a ventilation opening by combining the position and size setting of an oxygen isolation plate, thereby effectively solving the problem of secondary reburning or explosion after the intelligent power distribution terminal is ignited. Meanwhile, the cloud server, the mobile terminal, the alarm system and the communication unit are matched, so that the fire is reported at the first time after the fire occurs, related personnel can make a decision whether to take further treatment measures or not, and the safety guarantee level of the power grid is comprehensively improved.
Description
Technical Field
The invention relates to the technical field of intelligent power grids, in particular to an intelligent power distribution terminal and a large-scale power grid safety guarantee system.
Background
Intelligent power distribution terminals such as a DTU cabinet and a power distribution cabinet are important components of a power system, and due to reasons such as short circuit, high temperature or overload, spontaneous combustion may occur inside the intelligent power distribution terminals to cause damage, and even regional power grid paralysis may be caused if the damage is not processed in time. Therefore, how to timely and effectively protect the power distribution terminal after spontaneous combustion is a difficult problem in the industry.
The traditional coping measures are that manual inspection is adopted so as to eliminate hidden dangers in time, and along with the increase of service life of the power distribution terminal, the coping mode requires that inspection frequency and maintenance times are gradually increased. In recent years, some intelligent power distribution terminals adopt an internal monitoring means, so that an alarm can be given in time when abnormal conditions occur, and maintenance personnel and fire fighters are prompted to go to the scene as soon as possible for troubleshooting and disposal. Although the scheme has great progress compared with manual inspection, the response speed is still slow, and the fire cannot be actively and timely extinguished in the first time of the fire.
Prior art discloses a extinguishing device suitable for switch board like chinese patent CN210674058U, including automatic gaseous flame retardant device and monitor terminal, automatic gaseous flame retardant device includes mount, carbon dioxide compressed gas cylinder, pressure sensor and controller, carbon dioxide compressed gas cylinder fixes on the mount, pressure sensor installs inside the carbon dioxide compressed gas cylinder and is connected with the controller, monitor terminal and the long-range wireless connection of communication module, communication module installs on the controller. The cylinder mouth of the carbon dioxide compressed gas cylinder is provided with a flow guide pipe and a sealing piece consisting of a metal grid plate and a hot-melting material for filling, the hot-melting material on the sealing piece falls off after a fire occurs, and carbon dioxide is sprayed out from the carbon dioxide compressed gas cylinder to extinguish fire through isolated oxygen.
The carbon dioxide is used for oxygen isolation and fire extinguishing, so that the electric elements in the power distribution terminal can be protected as far as possible, and therefore, the useful electric elements can be recovered as much as possible after the fire is controlled, and the equipment maintenance cost is reduced. However, after the carbon dioxide is released from the compression bottle, the carbon dioxide can expand for tens of times in a short time, and if a proper pressure relief opening is not provided, explosion is likely to be caused due to excessive pressure, so that more serious accidents are caused. If the pressure relief opening is formed in the surface of the power distribution terminal, after carbon dioxide is released, even if an open fire is extinguished, the temperature in the terminal is still high, and air rich in oxygen outside can enter the power distribution terminal through the pressure relief opening, so that the fire reignition is caused.
Therefore, in the prior art, the intelligent power distribution terminal which uses carbon dioxide to isolate oxygen has the disadvantages of easy re-ignition or explosion of fire and poor safety.
Disclosure of Invention
In order to solve the technical problems, the invention provides an intelligent power distribution terminal and a large-scale power grid safety guarantee system, which are used for solving the problems of fire re-ignition and explosion after the intelligent power distribution terminal is ignited, so that the safety of a large-scale power grid is guaranteed.
The shell of the intelligent power distribution terminal comprises a box body and a top cover, wherein a cavity is formed in the shell and is provided with at least two ventilation openings which are respectively arranged on opposite side surfaces of the box body; the bottom of the cavity comprises a chamber.
The intelligent power distribution terminal is further provided with an emergency protection device for emergency protection of the cavity, and the emergency protection device comprises a monitoring assembly, a driving assembly, a carbon dioxide release assembly, an oxygen isolation assembly and an industrial personal computer.
The carbon dioxide releasing assembly is arranged in the cavity and comprises a carbon dioxide storage, an exhaust pipe and an electromagnetic valve, the carbon dioxide storage releases carbon dioxide to the cavity through the exhaust pipe, and the electromagnetic valve is arranged on the exhaust pipe.
The monitoring component monitors the environment in the cavity in real time, and the monitored parameters comprise temperature parameters, particle parameters and spectrum parameters.
The driving assembly comprises a motor and a rotating shaft, an output shaft of the motor is detachably connected with the rotating shaft, and the output shaft of the motor is suitable for being linked or separated with the rotating shaft under the instruction of the industrial personal computer.
The oxygen separation component comprises an oxygen separation plate and a sliding cable, one end of the sliding cable is fixedly connected to the rotating shaft, the other end of the sliding cable is connected with the oxygen separation plate, and the oxygen separation plate is driven by the sliding cable to shield the ventilation opening of the cavity.
The industrial personal computer is connected with the monitoring assembly, the driving assembly and the carbon dioxide releasing assembly; the industrial personal computer is used for receiving the parameters monitored by the monitoring assembly, carrying out industrial control judgment and outputting a control instruction.
Through the design, once spontaneous combustion occurs, the emergency protection device can monitor and alarm the fire and automatically control fire extinguishing at the first time, and the fire spreading caused by untimely fire extinguishing is avoided. Specifically, after spontaneous combustion occurs, the industrial personal computer controls the electromagnetic valve to be opened, liquid carbon dioxide stored in the carbon dioxide storage device is vaporized in a very short time and is released into the cavity, and oxygen is blocked by the carbon dioxide to realize oxygen isolation of an ignition point.
When the carbon dioxide is released, the vent is in an open state, the high pressure in the cavity caused by vaporization and expansion of the carbon dioxide is released and explosion-proof through the vent, and meanwhile, the air rich in oxygen in the box is discharged from the vent, so that complete oxygen isolation is realized. Because the time length required by the vaporization of the carbon dioxide is less than the time for the oxygen isolation plate to move from the initial position to the designated position, the oxygen isolation plate moves to the designated position and the blocking time of the vent is later than the time for the release of the carbon dioxide, when the vent is blocked, the external fresh air is difficult to enter the intelligent power distribution terminal through the vent, and the possible re-combustion is avoided.
Preferably, the ventilation openings comprise a first lower ventilation opening, a second lower ventilation opening, a first upper ventilation opening and a second upper ventilation opening, the first lower ventilation opening and the first upper ventilation opening are arranged on the same side face of the box body, and the second lower ventilation opening and the second upper ventilation opening are arranged on the other side face of the box body.
The oxygen-isolating component is a first oxygen-isolating component matched with the first lower ventilation opening and the first upper ventilation opening, and a second oxygen-isolating component matched with the second lower ventilation opening and the second upper ventilation opening.
The first oxygen separation assembly comprises a first oxygen separation plate, a first sliding cable and a first pulley, one end of the first sliding cable is fixedly connected to the rotating shaft, the other end of the first sliding cable is connected with the first oxygen separation plate by winding around the first pulley, and the first oxygen separation plate is driven by the first sliding cable to shield the first lower ventilation opening and the first upper ventilation opening.
The second oxygen-isolating component comprises a second oxygen-isolating plate, a second sliding rope and a second pulley, one end of the second sliding rope is fixedly connected to the rotating shaft, the other end of the second sliding rope is connected with the second oxygen-isolating plate by passing through the second pulley, and the second oxygen-isolating plate is driven by the second sliding rope to shield the second lower ventilation opening and the second upper ventilation opening.
The motor controls the sliding rope through the rotating shaft, so that the oxygen isolation plate is driven to realize the isolation of the ventilation opening, the rapid displacement of the oxygen isolation plate can be realized, and the displacement control of the oxygen isolation plate is realized.
Preferably, the first oxygen separation assembly further comprises a first upper stop plate and a first lower stop plate, the first oxygen separation plate is arranged between the first upper stop plate and the first lower stop plate, and the first oxygen separation plate is suitable for shielding the first lower vent and the first upper vent when being attached to the first upper stop plate. The second oxygen-isolating assembly further comprises a second upper stop plate and a second lower stop plate, the second oxygen-isolating plate is arranged between the second upper stop plate and the second lower stop plate, and the second oxygen-isolating plate is suitable for shielding the second lower vent and the second upper vent when the second lower stop plate is attached.
Through set up in isolating oxygen subassembly and end the board with ending down, can guarantee first oxygen baffle and second and separate oxygen baffle reciprocating motion in effectual vertical stroke space. Simultaneously, the mode that sets up only board and end board down is succinct effectual vertical spacing mode, and is with low costs and structural stability is good.
Meanwhile, the first oxygen partition plate shields the first lower vent and the first upper vent when reaching the highest position, the second oxygen partition plate shields the second lower vent and the second upper vent when reaching the lowest position, namely, the vertical moving directions of the first oxygen partition plate and the second oxygen partition plate are opposite, and the first oxygen partition plate and the second oxygen partition plate move up and down in a reverse direction no matter in the moving process of opening or shielding the vent, so that the gravitational potential energy consumption required to be offset in the moving process is saved, and the output requirement on the motor is reduced.
Preferably, the mass of the first oxygen barrier is greater than the mass of the second oxygen barrier.
In the use, the emergency protection device of the intelligent power distribution terminal is in a standby state for a long time, and if the motor output shaft is stressed for a long time, the service life of the motor is reduced, so that the reliability of the emergency protection device is reduced. Therefore, in order to avoid the influence of stress on the output shaft for a long time, the present application preferably employs the output shaft to be interlockable with or separable from the rotating shaft.
Under normal conditions, the output shaft and the rotation shaft are in a separation state, at the moment, because the mass of the first oxygen isolation plate is larger than that of the second oxygen isolation plate, under the action of gravity, the first oxygen isolation plate is attached to the first lower stop plate and located at the lowest position, the second oxygen isolation plate is attached to the second upper stop plate and located at the highest position, at the moment, all the ventilation openings are in a ventilation state, and the output shaft is not stressed. When the intelligent power distribution terminal spontaneously ignites, the output shaft is linked with the rotating shaft under the instruction of the industrial personal computer, and the motor controls the first oxygen isolation plate and the second oxygen isolation plate to move, so that oxygen isolation is realized.
Preferably, the first oxygen barrier assembly further comprises a first slide rail, the first slide rail is arranged between the first upper stop plate and the first lower stop plate, and the first oxygen barrier is suitable for sliding up and down along the first slide rail. The second oxygen-isolating assembly further comprises a second sliding rail, the second sliding rail is arranged between the second upper stop plate and the second lower stop plate, and the second oxygen-isolating plate is suitable for sliding up and down along the second sliding rail.
By means of the design, the moving tracks of the first oxygen separation plate and the second oxygen separation plate are guaranteed, and the oxygen separation plate is applied to the field of intelligent power distribution terminals and has two advantages. One of them, distribution terminal range of application is extensive, sets up the environment complicacy, often can be set up in the great external environment of natural wind, utilizes the slide rail to carry on spacingly to first oxygen baffle and second oxygen baffle, has ensured that first oxygen baffle and second oxygen baffle shelter from the vent when taking place the condition of a fire. Otherwise, if the first oxygen partition plate or the second oxygen partition plate is blown away by external airflow, external natural wind enters the intelligent power distribution terminal through the vent rapidly at the moment, so that the oxygen supply amount in the intelligent power distribution terminal rapidly rises, and the fire is spread or reburning seriously. Secondly, based on reasons such as ground or installation error, intelligent distribution terminal probably has a little slope itself, if do not set up the slide rail and only rely on the strop to carry out hoist and mount to first oxygen baffle and second oxygen baffle, first oxygen baffle or second oxygen baffle are probably kept away from the box surface under the effect of gravity, even control first oxygen baffle and second oxygen baffle of separating at this moment remove the vent position, also are difficult to realize carrying out effective separation to the vent.
Preferably, the distance between the first oxygen separation plate and the first upper stop plate when the first oxygen separation plate moves to the lowest position is equal to the distance between the second oxygen separation plate and the second lower stop plate when the second oxygen separation plate moves to the highest position; the distance between the first oxygen partition plate and the upper end of the first upper vent when the first oxygen partition plate moves to the lowest position is larger than the distance between the second oxygen partition plate and the lower end of the second lower vent when the second oxygen partition plate moves to the highest position.
The distance between the first oxygen separation plate and the first upper stop plate when the first oxygen separation plate moves to the lowest position is equal to the distance between the second oxygen separation plate and the second lower stop plate when the second oxygen separation plate moves to the highest position. By adopting the design, the displacement distance of the first oxygen separation plate and the second oxygen separation plate is the same, and the wound length of the first sliding cable is equal to the released length of the second sliding cable during the rotation of the rotating shaft, and vice versa.
After the fire occurs, the first oxygen isolation plate and the second oxygen isolation plate move under the driving of the motor. Because the distance between the first oxygen partition plate and the upper end of the first upper vent is larger than the distance between the second oxygen partition plate and the lower end of the second lower vent when the first oxygen partition plate moves to the lowest position, when the second oxygen partition plate completely shields the second lower vent, a gap still exists in the first upper vent. Because the density of carbon dioxide is greater than air density, and the carbon dioxide release subassembly sets up in intelligent power distribution terminal's bottom, so carbon dioxide is from bottom to top diffusion gradually, and under vent was obstructed and first vent still remained gapped condition under the second, carbon dioxide extrudes the air on cavity upper portion via first vent more easily to the inside oxygen that separates of cavity is more easily realized.
Optionally, the vents are a third lower vent and a third upper vent.
The oxygen-isolating component is a first oxygen-isolating component matched with the third upper vent and a second oxygen-isolating component matched with the third lower vent.
The first oxygen separation assembly comprises a first oxygen separation plate, a first sliding rope and a first pulley, one end of the first sliding rope is fixedly connected to the rotating shaft, the other end of the first sliding rope is connected with the first oxygen separation plate by passing through the first pulley, and the first oxygen separation plate is driven by the first sliding rope to shield the third upper ventilation opening; the second oxygen-isolating component comprises a second oxygen-isolating plate, a second sliding rope and a second pulley, one end of the second sliding rope is fixedly connected to the rotating shaft, the other end of the second sliding rope is connected with the second oxygen-isolating plate by passing through the second pulley, and the second oxygen-isolating plate is driven by the second sliding rope to shield the third lower ventilation opening.
Under some circumstances, intelligent distribution terminal only sets up two crisscross vents of subtend, and at this moment, first oxygen baffle and second oxygen baffle only need shelter from vent and third lower vent on the third respectively, can be when the condition of a fire appearing the quick upper and lower displacement of drive of sliding cable and pulley in order to realize the separation to the vent, realize the inside basic separation with the outside air of intelligent distribution terminal, prevent that outside air from getting into in a large number the cavity aggravation intensity of a fire or the secondary catches fire.
Preferably, a baffle is arranged on the rotating shaft, and the first sliding cable and the second sliding cable are separated by the baffle.
The blocking piece is arranged on the rotating shaft, so that the first sliding cable and the second sliding cable are separated by the blocking piece, and the situation that the first sliding cable and the second sliding cable are wound to influence the folding and unfolding of the sliding cables when the rotating shaft rotates is avoided.
Preferably, a control box is arranged outside the cavity, and the control box comprises an industrial personal computer and input equipment for inputting preset parameters to the industrial personal computer.
The input equipment is used for inputting preset parameters to the industrial personal computer for comparison. And the input equipment is arranged in the control box outside the cavity, so that the operation is simpler and more convenient, and the workload of maintenance and adjustment is reduced.
The invention also provides a large-scale power grid safety guarantee system, which comprises a plurality of the intelligent power distribution terminals, and the large-scale power grid safety guarantee system comprises the following components: the communication unit is arranged on each intelligent power distribution terminal and used for receiving signals of the industrial personal computer; the cloud server is used for receiving the fire signal sent by the communication unit and processing the fire signal; the mobile terminal is internally provided with a wireless receiving module for receiving a signal sent by the cloud server and a display unit for displaying a fire; and the alarm system receives the signal sent by the cloud server and gives an alarm.
Through such design, after the cloud server receives the fire signal that communication unit sent, can start alarm system the very first time, inform relevant personnel's fire condition, inform mobile terminal through wireless receiving module simultaneously to show the fire condition at the display element. Therefore, no matter where the related personnel are, the situation can be known at the first time and whether further treatment measures are taken or not can be determined, and the safety guarantee level of the power grid is improved.
Drawings
In order that the present disclosure may be more readily and clearly understood, reference is now made to the following detailed description of the present disclosure taken in conjunction with the accompanying drawings, in which:
fig. 1 is a schematic diagram of an internal structure of the intelligent power distribution terminal according to a first embodiment of the present invention;
FIG. 2 is a schematic structural view of the first oxygen barrier assembly, the second oxygen barrier assembly and the rotating shaft according to the first embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of FIG. 1;
FIG. 4 is a schematic view showing the position relationship among the first oxygen barrier, the first upper ventilation opening and the first lower ventilation opening when the first oxygen barrier moves to the lowest position according to the first embodiment of the present invention;
FIG. 5 is a schematic view showing the position relationship among the second oxygen barrier, the second upper vent and the second lower vent when the second oxygen barrier moves to the highest position according to the first embodiment of the present invention;
fig. 6 is a flowchart of the operation of the large-scale grid security system according to the first embodiment of the present invention;
fig. 7 is a schematic diagram of an internal structure of the intelligent power distribution terminal according to the second embodiment of the present invention;
FIG. 8 is a schematic structural view of the first oxygen barrier assembly, the second oxygen barrier assembly and a rotating shaft according to a second embodiment of the present invention;
fig. 9 is a schematic cross-sectional view of fig. 7.
Description of reference numerals: 1. a box body; 2. a top cover; 3. a monitoring component; 4. a rotating shaft; 5. a carbon dioxide reservoir; 6. a first oxygen barrier; 7. a second oxygen barrier; 8. a control box; 11. a cavity; 12a, a first lower vent; 12b, a second lower vent; 12. a third lower vent; 13a, a first upper vent; 13b, a second upper vent; 13. a third upper vent; 14. a door; 31. a temperature sensor; 32. a smoke sensor; 33. a flame detector; 41. a baffle plate; 51. an exhaust pipe; 52. an electromagnetic valve; 53. a chamber; 61. a first slide rail; 62. a first pulley; 63. a first strop; 64. a first upper stop plate; 65. a first lower stop plate; 601. a first upper shielding portion; 602. a first lower shielding portion; 603. a first connection portion; 71. a second slide rail; 72. a second pulley; 73. a second strop; 74. a second upper stop plate; 75. a second lower stop plate; 701. a second upper shielding portion; 702. a second lower shielding portion; 703. a second connecting portion; 81. an industrial personal computer; 82. an input device.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Example one
As shown in fig. 1 to 6, the large-scale power grid security system includes a plurality of intelligent power distribution terminals, a communication unit, a cloud server, an alarm system, and a mobile terminal.
Each intelligent power distribution terminal comprises a box body 1, a top cover 2 and an emergency protection device, wherein the box body 1 and the top cover 2 jointly enclose a cavity 11 of the intelligent power distribution terminal, and an electrical element is arranged in the cavity 11. The box body 1 is formed with at least two ventilation openings respectively provided on opposite side surfaces of the box body 1. In this embodiment, a first lower vent 12a, a second lower vent 12b, a first upper vent 13a, and a second upper vent 13b are formed on the box body 1, the first lower vent 12a and the first upper vent 13a are disposed on the same side of the box body 1, and the first upper vent 13a is located above the first lower vent 12 a. The second lower vent 12b and the second upper vent 13b are disposed on the other side surface of the box body 1. Further, the first upper vent 13a and the second upper vent 13b are located at the same height, and the first lower vent 12a and the second lower vent 12b are located at the same height.
The emergency protection device comprises a monitoring component 3, a motor, a rotating shaft 4, a first oxygen separation component, a second oxygen separation component, a carbon dioxide release component and an industrial personal computer 81. The emergency protection device is used for carrying out emergency protection on the intelligent power distribution terminal when the intelligent power distribution terminal is spontaneously combusted.
The industrial personal computer 81 is used for receiving and judging various parameters monitored by the monitoring assembly 3 and controlling the starting and stopping of the motor. In this embodiment, an input device 82 for inputting preset parameters to the industrial personal computer 81 is further included. The industrial personal computer 81 and the input device 82 are both arranged in the control box 8 outside the cavity.
In this embodiment, the monitoring component 3 is disposed at the top of the cavity 11 of the intelligent power distribution terminal, and is used for monitoring various parameters of the environment in the intelligent power distribution terminal in real time. In particular, the monitoring assembly 3 comprises a temperature sensor 31, a smoke sensor 32 and a flame detector 33, wherein the temperature sensor 31 is used for monitoring the temperature inside the cavity 11, the smoke sensor 32 is used for monitoring the particle content inside the cavity 11, and the flame detector 33 is used for monitoring the light spectrum inside the cavity 11.
The first oxygen isolating component is used for shielding a first lower vent 12a and a first upper vent 13a on the box body 1 when a fire occurs. The first oxygen-isolating component comprises a first oxygen-isolating plate 6, a first slide rail 61, a first pulley 62, a first slide cable 63, a first upper stop plate 64 and a first lower stop plate 65.
The rotating shaft 4 is detachably and coaxially linked with an output shaft of the motor, one end of the first sliding cable 63 is fixedly connected with the first oxygen separation plate 6, and the other end of the first sliding cable is wound on the rotating shaft 4 by passing through the first pulley 62. The first oxygen barrier 6 is suitable for shielding or opening the first lower ventilation opening 12a and the first upper ventilation opening 13a under the driving of the first sliding rope 63. In this embodiment, the first slide rail 61 is disposed between the first upper stop plate 64 and the first lower stop plate 65, and the first oxygen barrier 6 is adapted to slide up and down along the first slide rail 61. Correspondingly, the first oxygen barrier 6 is also disposed between the first upper stop plate 64 and the first lower stop plate 65, and the first oxygen barrier 6 is adapted to reach its highest position when attached to the first upper stop plate 64 and block the first lower vent 12a and the first upper vent 13 a.
The second oxygen isolating component is used for shielding a second lower vent 12b and a second upper vent 13b on the box body 1 when a fire occurs. The second oxygen-isolating component comprises a second oxygen-isolating plate 7, a second sliding rail 71, a second pulley 72, a second sliding rope 73, a second upper stop plate 74 and a second lower stop plate 75.
One end of the second sliding cable 73 is fixedly connected with the second oxygen-separating plate 7, and the other end is wound on the rotating shaft 4 by winding around the second pulley 72. The second oxygen barrier 7 is suitable for blocking or opening the second lower vent 12b and the second upper vent 13b under the driving of the second sliding rope 73. In this embodiment, the second slide rail 71 is disposed between the second upper stop plate 74 and the second lower stop plate 75, and the second oxygen barrier 7 is adapted to slide up and down along the second slide rail 71. Correspondingly, the second oxygen barrier 7 is also disposed between the second upper stop plate 74 and the second lower stop plate 75, and the second oxygen barrier 7 is adapted to reach its lowest position when the second lower stop plate 75 is attached and block the second lower vent 12b and the second upper vent 13 b.
In the embodiment, the mass of the first oxygen-isolating plate 6 is greater than that of the second oxygen-isolating plate 7, and the output shaft of the motor is suitable for realizing the linkage or separation with the rotating shaft 4 under the instruction of the industrial personal computer 81.
In this embodiment, the first oxygen barrier 6 includes a first upper shielding portion 601 for blocking the first upper vent 13a and a first lower shielding portion 602 for blocking the first lower vent 12a, and the first upper shielding portion 601 and the first lower shielding portion 602 are rigidly connected by a first connecting portion 603. The second oxygen barrier 7 includes a second upper shielding portion 701 for blocking the second upper vent 13b, and a second lower shielding portion 702 for blocking the second lower vent 12b, and the second upper shielding portion 701 and the second lower shielding portion 702 are rigidly connected by a second connecting portion 703. Further preferably, the first oxygen-barrier 6 and the second oxygen-barrier 7 are both integrally formed rectangular plates.
In order to achieve the final blocking of the first upper ventilation opening 13a or the second upper ventilation opening 13b, as shown in fig. 3-5 in particular, in the present embodiment, the distance a1 between the first oxygen barrier 6 and the first upper stop 64 when moving to the lowest position and the distance a2 between the second oxygen barrier 7 and the second lower stop 75 when moving to the highest position are set to satisfy a1= a 2. Further, the distance b1 between the first oxygen baffle 6 and the upper end of the first upper vent 13a when the first oxygen baffle 6 moves to the lowest position, and the distance b2 between the second oxygen baffle 7 and the lower end of the second lower vent 12b when the second oxygen baffle 7 moves to the highest position are set to satisfy b1> b 2.
More specifically, the b1 is the distance between the first upper shielding portion 601 and the upper end of the first upper vent 13a when the first oxygen barrier 6 moves to the lowest position; the b2 is the distance between the second lower shielding portion 702 and the lower end of the second lower vent 12b when the second oxygen barrier 7 moves to the highest position. Further, when the first oxygen barrier 6 moves to the lowest position, the distance b3 between the first lower shielding portion 602 and the upper end of the first lower ventilation opening 12a, and when the second oxygen barrier 7 moves to the highest position, the distance b4 between the second upper shielding portion 701 and the lower end of the second upper ventilation opening 13b is set to satisfy b4= b1 and b3= b2, that is, "b 1= b4> b3= b 2".
In other embodiments, the relationship of b1, b2, b3 and b4 may be "b 1> b4= b3= b 2", "b 1= b4> b3> b 2" or "b 1> b4> b3= b 2", so long as it is ensured that the first upper ventilation opening 13a or the second upper ventilation opening 13b is blocked finally, and the design purpose of the present invention can be achieved.
In this embodiment, the blocking plate 41 is disposed on the rotating shaft 4, and the first sliding cable 63 and the second sliding cable 73 are respectively wound on two sides of the blocking plate 41.
The bottom of cavity 11 is provided with the cavity 53 that is used for depositing the carbon dioxide release subassembly, and cavity 53 is filled with temperature resistant thermal-insulated cotton. The carbon dioxide release assembly comprises a carbon dioxide storage 5, an exhaust pipe 51 and a solenoid valve 52. In the present embodiment, one end of the exhaust pipe 51 communicates with the carbon dioxide storage 5, and the other end communicates with the cavity 11. An electromagnetic valve 52 is arranged on the exhaust pipe 51, and the electromagnetic valve 52 receives the instruction of the industrial personal computer 81 to realize the open-close control of the exhaust pipe 51. In the present embodiment, the carbon dioxide storage 5 contains liquid carbon dioxide.
The box body 1 is provided with a door 14 at a position matched with the carbon dioxide storage 5, the upper surface of the chamber 53 is an inclined plane, and the lower end of the inclined plane is arranged below the first lower ventilation opening 12 a; the cavity 11 is divided into an upper part and a lower part by the inclined surface, the lower part is the cavity 53, and one end of the exhaust pipe penetrates through the inclined surface to be communicated with the upper part of the cavity 11.
Through such design for when rainwater gets into the cavity, the rainwater will converge near first lower vent 12a along the inclined plane, through first lower vent 12a outflow cavity 11 when the water yield is great, prevent to deposit a large amount of water in the cavity and lead to the potential safety hazard. The inclined plane is suitable for realizing the isolation of the other parts of the cavity 11 and the cavity 53, and one end of the exhaust pipe 51 communicated with the cavity 11 is arranged above the inclined plane.
In this embodiment, the communication unit is disposed in each of the intelligent power distribution terminals, and the communication unit is configured to receive a signal of the industrial personal computer 81. The cloud server is used for receiving the fire signal sent by the communication unit and processing the fire signal. The mobile terminal is internally provided with a wireless receiving module for receiving signals sent by the cloud server and a display unit for displaying fire. The alarm system is used for receiving the signal sent by the cloud server and giving an alarm.
Under normal operating mode, intelligent distribution terminal normally works, and first oxygen baffle 6 is located the lowest position this moment, and second oxygen baffle 7 is located the highest position, first vent 12a, second vent 12b, first vent 13a and the second vent 13b all are in the open mode down, rotation axis 4 and output shaft are in the separation mode, solenoid valve 52 is in the closed mode. The temperature sensor 31, the smoke sensor 32 and the flame detector 33 transmit the monitored real-time data to the industrial personal computer 81, and the industrial personal computer compares the real-time parameters with preset parameters.
When the data comparison result is abnormal, the industrial personal computer 81 sends an instruction after determining that a fire occurs, the rotating shaft 4 is linked with the output shaft, and the motor drives the first oxygen isolation plate 6 and the second oxygen isolation plate 7 to move. Since b1> b2, when the second oxygen barrier 7 is moved to completely shield the second lower vents 12b, the first upper vents 13a are not completely shielded by the first oxygen barrier 6. Meanwhile, the solenoid valve 52 is opened under the instruction of the industrial personal computer 81, the liquid carbon dioxide in the carbon dioxide storage 5 is rapidly vaporized in a short time and rapidly diffused from the bottom to the top of the chamber 11 through the exhaust pipe 51, and the oxygen-containing air at the upper part of the chamber 11 is rapidly extruded out of the chamber through the first upper vent 13a which is not completely blocked. After a short period of time, along with the continuous rotation of the rotating shaft 4, the first oxygen separation plate 6 continuously rises until the first upper vent 13a is completely shielded, so that the oxygen separation inside the cavity 11 is realized. Meanwhile, carbon dioxide absorbs a large amount of heat in the vaporization process, so that the internal environment of the cavity 11 can be cooled, and the fire extinguishing effect is further achieved. In addition, because the carbon dioxide is in a liquefied state when being stored in the carbon dioxide storage 5, the pressure in the cavity is increased after the carbon dioxide is vaporized and released into the cavity, and air with higher oxygen content outside the intelligent power distribution terminal cannot enter the cavity through the vent even if a part of gaps exist at the vent under the action of pressure difference, so that the oxygen isolation effect of the oxygen isolation assembly is further improved.
When the industrial personal computer 81 issues an instruction to the first oxygen separation assembly, the second oxygen separation assembly and the carbon dioxide release assembly, data monitored by the monitoring assembly are uploaded to the cloud server through the communication unit, and the cloud server transmits information to the alarm system and the mobile terminal to remind a person in charge.
Example two
As shown in fig. 7 to 9, a second embodiment of the present invention is different from the first embodiment in that the vent of the present embodiment includes only the third lower vent 12 and the third upper vent 13 provided at different facing heights. Suitably, the first oxygen barrier assembly is adapted to block the third upper vent 13, and the second oxygen barrier assembly is adapted to block the third lower vent 12.
Specifically, the first oxygen barrier assembly comprises a first oxygen barrier 6, a first pulley 62 and a first sliding cable 63, one end of the first sliding cable 63 is fixedly connected to the rotating shaft 4, the other end of the first sliding cable is connected with the first oxygen barrier 6 by passing through the first pulley 62, and the first oxygen barrier 6 shields the third upper vent 13 under the driving of the first sliding cable 63. The second oxygen-isolating component comprises a second oxygen-isolating plate 7, a second sliding rope 73 and a second pulley 72, one end of the second sliding rope 73 is fixedly connected to the rotating shaft 4, the other end of the second sliding rope is connected with the second oxygen-isolating plate 7 by winding the second pulley 72, and the second oxygen-isolating plate 7 is driven by the second sliding rope 73 to shield the third lower ventilation opening 12.
In the present embodiment, the first oxygen barrier 6 and the second oxygen barrier 7 are both rectangular plate members. The distance between the first oxygen-separating plate 6 and the first upper stop plate 64 when moving to the lowest position is c1, and the distance between the second oxygen-separating plate 7 and the second lower stop plate 75 when moving to the highest position is c2, which are set to satisfy c1= c 2. Further, the distance between the first oxygen partition plate 6 and the upper end of the third upper vent 13 when moving to the lowest position is d1, and the distance between the second oxygen partition plate 7 and the lower end of the third lower vent 12 when moving to the highest position is d2, which are set to satisfy d1> d 2.
Other embodiments
In other embodiments, the monitoring component 3 may also be any one or two of the temperature sensor 31, the smoke sensor 32 and the flame detector 33, or may be other monitoring manners, as long as the environmental condition inside the cavity can be monitored, so as to achieve the design purpose of the present invention.
In other embodiments, the stopper 41 may not be provided, and the first strop 63 and the second strop 73 may be provided as the same strop. Through the design, when the motor drives the rotating shaft 4 to rotate, the first oxygen separation plate 6 and the second oxygen separation plate 7 are driven to move at the same time, and the design purpose of the invention can be achieved. However, after this alternative is adopted, as long as the first strop 63 and the second strop 73 are damaged, the whole strop needs to be replaced, which is more costly to maintain than the preferred embodiment of the present embodiment.
In other embodiments, high pressure carbon dioxide gas may be used in place of hydraulic carbon dioxide.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the spirit or scope of the invention.
Claims (6)
1. An intelligent power distribution terminal is characterized in that the intelligent power distribution terminal comprises an emergency protection device, and the emergency protection device comprises a monitoring assembly (3), a driving assembly, a carbon dioxide release assembly, an oxygen isolation assembly and an industrial personal computer (81);
wherein the monitoring component (3) monitors the environment in the cavity (11) in real time;
the driving assembly comprises a motor and a rotating shaft (4), an output shaft of the motor is detachably connected with the rotating shaft (4), and the output shaft of the motor is suitable for realizing linkage or separation with the rotating shaft (4) under the instruction of an industrial personal computer (81);
the carbon dioxide releasing assembly is arranged in a cavity (53) at the bottom of the cavity and comprises a carbon dioxide storage device (5), an exhaust pipe (51) and an electromagnetic valve (52) arranged on the exhaust pipe, and the carbon dioxide storage device (5) releases carbon dioxide to the cavity (11) through the exhaust pipe (51);
the oxygen isolation assembly comprises an oxygen isolation plate and a sliding cable, one end of the sliding cable is fixedly connected to the rotating shaft (4), the other end of the sliding cable is connected with the oxygen isolation plate, and the oxygen isolation plate is driven by the sliding cable to shield the ventilation opening;
the industrial personal computer (81) is connected with the monitoring assembly (3), the driving assembly and the carbon dioxide releasing assembly; the industrial personal computer (81) is used for receiving the parameters monitored by the monitoring assembly (3), carrying out industrial control judgment and outputting a control instruction;
the four ventilation openings are respectively a first lower ventilation opening (12 a), a second lower ventilation opening (12 b), a first upper ventilation opening (13 a) and a second upper ventilation opening (13 b), the first lower ventilation opening and the first upper ventilation opening are arranged on the same side face of the box body, and the second lower ventilation opening and the second upper ventilation opening are arranged on the other side face of the box body;
the oxygen separation component comprises a first oxygen separation component matched with the first lower vent (12 a) and the first upper vent (13 a), and a second oxygen separation component matched with the second lower vent (12 b) and the second upper vent (13 b);
the first oxygen barrier (6) comprises a first upper shielding part (601) used for blocking the first upper ventilation opening (13 a) and a first lower shielding part (602) used for blocking the first lower ventilation opening (12 a), and the second oxygen barrier (7) comprises a second upper shielding part (701) used for blocking the second upper ventilation opening (13 b) and a second lower shielding part (702) used for blocking the second lower ventilation opening (12 b);
the first oxygen separation assembly comprises a first oxygen separation plate (6) in a shape of a Chinese character 'hui', a first sliding cable (63) and a first pulley (62), one end of the first sliding cable (63) is fixedly connected to the rotating shaft (4), the other end of the first sliding cable is connected with the first oxygen separation plate (6) by bypassing the first pulley (62), and the first oxygen separation plate (6) is driven by the first sliding cable (63) to shield the first lower ventilation opening (12 a) and the first upper ventilation opening (13 a);
the second oxygen-isolating assembly comprises a second oxygen-isolating plate (7) in a shape of a Chinese character 'hui', a second sliding cable (73) and a second pulley (72), one end of the second sliding cable (73) is fixedly connected to the rotating shaft (4), the other end of the second sliding cable (73) is connected with the second oxygen-isolating plate (7) by bypassing the second pulley (72), and the second oxygen-isolating plate (7) is driven by the second sliding cable (73) to shield the second lower vent (12 b) and the second upper vent (13 b);
the first oxygen separation assembly further comprises a first upper stop plate (64) and a first lower stop plate (65), the first oxygen separation plate (6) is arranged between the first upper stop plate (64) and the first lower stop plate (65), and the first oxygen separation plate (6) is suitable for shielding the first lower ventilation opening (12 a) and the first upper ventilation opening (13 a) when attached to the first upper stop plate (64);
the second oxygen-insulating assembly further comprises a second upper stop plate (74) and a second lower stop plate (75), the second oxygen-insulating plate (7) is arranged between the second upper stop plate (74) and the second lower stop plate (75), and the second oxygen-insulating plate (7) is suitable for shielding the second lower ventilation opening (12 b) and the second upper ventilation opening (13 b) when being attached to the second lower stop plate (75);
the distance between the first oxygen separation plate (6) and the first upper stop plate (64) when the first oxygen separation plate moves to the lowest position is equal to the distance between the second oxygen separation plate (7) and the second lower stop plate (75) when the second oxygen separation plate moves to the highest position; the distance between the first oxygen separation plate (6) and the upper end of the first upper vent (13 a) when the first oxygen separation plate moves to the lowest position is larger than the distance between the second oxygen separation plate (7) and the lower end of the second lower vent (12 b) when the second oxygen separation plate moves to the highest position;
when the first oxygen barrier (6) moves to the lowest position, the distance between the first lower shielding part (602) and the upper end of the first lower ventilation opening (12 a) is equal to the distance between the second oxygen barrier (7) and the lower end of the second lower ventilation opening (12 b) when the second oxygen barrier moves to the highest position; when the second oxygen partition plate (7) moves to the highest position, the distance between the second upper shielding part (701) and the lower end of the second upper vent (13 b) is equal to the distance between the first oxygen partition plate 6 and the upper end of the first upper vent (13 a) when the second upper shielding part moves to the lowest position.
2. The intelligent power distribution terminal according to claim 1, wherein the mass of the first oxygen barrier (6) is greater than the mass of the second oxygen barrier (7).
3. The intelligent power distribution terminal of claim 1, wherein the first oxygen barrier assembly further comprises a first sliding rail (61), the first sliding rail (61) being disposed between the first upper stop plate (64) and the first lower stop plate (65), the first oxygen barrier plate (6) being adapted to slide up and down the first sliding rail (61);
the second oxygen-isolating assembly further comprises a second sliding rail (71), the second sliding rail (71) is arranged between the second upper stop plate (74) and the second lower stop plate (75), and the second oxygen-isolating plate (7) is suitable for sliding up and down along the second sliding rail (71).
4. The intelligent power distribution terminal according to any one of claims 1-3, wherein a baffle (41) is disposed on the rotating shaft (4), and the first sliding cable (63) and the second sliding cable (73) are separated by the baffle (41).
5. The intelligent power distribution terminal according to claim 1, wherein a control box (8) is arranged outside the cavity (11), and the control box (8) comprises the industrial personal computer (81) and an input device (82) for inputting preset parameters to the industrial personal computer (81).
6. A large-scale grid security system comprising a plurality of intelligent power distribution terminals according to claim 5, wherein the large-scale grid security system comprises:
the communication unit is arranged on each intelligent power distribution terminal and used for receiving signals of the industrial personal computer (81);
the cloud server is used for receiving the fire signal sent by the communication unit and processing the fire signal;
the mobile terminal is internally provided with a wireless receiving module for receiving the signal sent by the cloud server and a display unit for displaying the fire;
and the alarm system receives the signal sent by the cloud server and gives an alarm.
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Address after: 410000, Room 401-16, Building 2, Xincheng Science and Technology Park, No. 588 Yuelu West Avenue, Dongfanghong Street, Xiangjiang New District, Changsha City, Hunan Province Patentee after: Hezong Technology Co.,Ltd. Country or region after: China Patentee after: BEIJING HEZONG SHIKE ELECTRIC POWER TECHNOLOGY Co.,Ltd. Address before: Room 1211 and 1212, block D, No. 9, Shangdi Third Street (Jiahua building), Haidian District, Beijing 100085 Patentee before: BEIJING HEZONG SCIENCE & TECHNOLOGY Co.,Ltd. Country or region before: China Patentee before: BEIJING HEZONG SHIKE ELECTRIC POWER TECHNOLOGY Co.,Ltd. |