CN114887256A - Direct current conflagration system of fleing of transformer substation based on lithium iron phosphate battery - Google Patents
Direct current conflagration system of fleing of transformer substation based on lithium iron phosphate battery Download PDFInfo
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- CN114887256A CN114887256A CN202210520786.4A CN202210520786A CN114887256A CN 114887256 A CN114887256 A CN 114887256A CN 202210520786 A CN202210520786 A CN 202210520786A CN 114887256 A CN114887256 A CN 114887256A
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- 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
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B23/00—Filters for breathing-protection purposes
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/04—Control of fire-fighting equipment with electrically-controlled release
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
A transformer substation direct-current fire escape system based on a lithium iron phosphate storage battery is characterized in that a system partition door is arranged on a partition wall, a direct-current system access door is arranged on a direct-current load chamber or a storage battery chamber, a mechanical door closer and a door body magnetic attraction device are arranged on the system partition door and the direct-current system access door, laser lamp belts are arranged on two sides of the ground of an opening and closing passage of the system partition door and the direct-current system access door, laser transmitters distributed at intervals are arranged on the laser lamp belts and can emit upward laser, a plurality of spaced escape guidance belts are arranged between the two laser lamp belts, escape direction light belts are arranged on the escape guidance belts, and an escape control cabinet is arranged in the direct-current load chamber. Utilize the fire control controller and personnel to flee and guide the communication linkage of controller for when the battery room takes place the condition of a fire and starts the fire control, can detect the location and flee for one's life and guide to the personnel rapidly, make abundant time of fleing fully shorten, and can provide fine fire control effect.
Description
Technical Field
The invention relates to the technical field of direct current systems of substations, in particular to a direct current fire escape system of a substation based on a lithium iron phosphate storage battery.
Background
The P-O bond in the lithium iron phosphate crystal is stable and difficult to decompose, and the structure of the lithium iron phosphate crystal does not collapse and generate heat or form a strong oxidizing substance like lithium cobaltate even at high temperature or during overcharge, so the lithium iron phosphate crystal has good safety. The cycle life of the long-life lead-acid battery is about 300 times, namely 500 times of lithium iron phosphate batteries, while the cycle life of the lithium iron phosphate power battery reaches more than 2000 times, and the standard charging (5 hour rate) can reach 2000 times. The lead-acid battery with the same quality is 'new half year, old half year, and half year after maintenance', the maximum time is 1-1.5 years, and the theoretical life of the lithium iron phosphate battery can reach 7-8 years when the lithium iron phosphate battery is used under the same conditions. Comprehensively considered, the cost performance is more than 4 times of that of the lead-acid battery theoretically.
Due to the characteristics, the lithium iron phosphate battery is widely applied to new energy power batteries, and the cost advantage of the lithium iron phosphate battery is fully exerted. However, in a direct current system of a transformer substation, a lead-acid storage battery is always used in a storage battery part due to technical inheritance, the self-discharge rate of the lead-acid storage battery is high, the self-discharge current is 1 mA/Ah, and the full capacity is ensured only through long-term floating charge. The lithium iron phosphate battery has low self-discharge rate, basically does not need to supplement self-discharge capacity, and can cause overcharge of the lithium battery if floating charge is carried out for a long time, so that the danger of the lithium iron phosphate battery is increased, therefore, the lithium iron phosphate battery cannot be directly replaced by a lithium iron phosphate storage battery in a direct current system, and the safety of matching the lithium iron phosphate storage battery with the direct current system of a transformer substation also needs to be subjected to long-term experimental study.
In order to ensure the application of the lithium iron phosphate storage battery in a direct current system of a transformer substation, the fire protection of the battery needs to be processed in a perfect way, when the storage battery is short-circuited, leaked and the like to cause thermal runaway, the fire potential can be expanded to be uncontrollable within 5 to 10 seconds, when maintenance workers or inspection workers and other personnel exist in a direct current system room, the escape of personnel needs to be guaranteed preferentially during fire protection operation, the personnel escape time and the fire rescue time become a spear shield body, when the fire protection system is started, the existing fire smoke and the fire powder or gas often cause the indoor personnel to be unable to identify the direction and the path, and the personnel escape becomes difficult abnormally.
Disclosure of Invention
The invention aims to provide a transformer substation direct-current fire escape system based on a lithium iron phosphate storage battery, which can quickly organize internal personnel to escape when a fire disaster happens or fire fighting operation is carried out.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a transformer substation direct-current fire escape system based on a lithium iron phosphate storage battery comprises a power supply direct-current bus KM & lt- & gt, wherein the power supply direct-current bus KM & lt- & gt is connected with a direct-current charging screen CHC, a lithium iron phosphate storage battery screen BAT and a direct-current feed screen DISC, the direct-current charging screen CHC and the direct-current feed screen DISC are placed in a direct-current load chamber, the lithium iron phosphate storage battery screen BAT is placed in a storage battery chamber, a partition wall is arranged between the direct-current load chamber and the storage battery chamber, the power supply direct-current bus KM & lt- & gt penetrates through the partition wall to connect screens at two sides, a system partition door is arranged on the partition wall, a direct-current system access door is arranged on the direct-current load chamber or the storage battery chamber, a mechanical door closer and a door body magnetic attraction device are arranged on the system partition door and the direct-current system access door, laser lamp belts are arranged on two sides of an opening and closing channel ground of the system partition door and the direct-current system access door, and laser transmitters are arranged at intervals, the laser emitting device comprises a laser emitting device, a plurality of spaced escape guidance belts are arranged between two laser light belts, escape direction light belts are arranged on the escape guidance belts, an escape control cabinet is arranged in a direct current load room and is in communication connection with a fire controller on a lithium iron phosphate storage battery panel BAT, the escape control cabinet controls a laser emitter, the escape direction light belts and a door body magnetic attraction device to start and stop, an outdoor escape completion confirmation key is arranged outside a direct current system entrance door, and the outdoor escape completion confirmation key is electrically connected with the escape control cabinet.
The upper ends of the inner side walls of the direct-current load chamber and the storage battery chamber in the vertical direction are provided with escape detection and guidance devices, the escape detection and guidance devices can rotate at least two shafts, life detectors and laser guidance generators are arranged on the escape detection and guidance devices, the directions of the life detectors and the laser guidance generators are consistent, and the escape detection and guidance devices are controlled by an escape control cabinet.
The direct current load room or the storage battery room is internally provided with an indoor escape broadcasting device, an outdoor escape finishing broadcasting device is arranged outside an entrance of the direct current system entering the door, and the indoor escape broadcasting device and the outdoor escape finishing broadcasting device are controlled by an escape control cabinet.
The escape guiding belt is also provided with a human body inductor, and the human body inductor is connected with the escape control cabinet.
The direct current load chamber and the wall body at the top of the storage battery chamber are provided with emergency illuminating lamps, and the emergency illuminating lamps are electrically connected with the escape control cabinet.
Foretell escape control cabinet is equipped with personnel and flees and guide the controller, personnel flee and guide the controller and be connected with the driver communication, the driver is to the rotation of axle of detection and director of fleing, life detection and laser emission control, personnel flee and guide the output and the laser emitter of controller, the direction light area of fleing, the device is inhaled to door body magnetism, indoor broadcast ware of fleing, outdoor flee and accomplish broadcast broadcaster and emergency lighting lamp electricity and be connected, personnel flee and guide the input of controller and flee outdoors and accomplish and confirm the keying electricity and be connected, personnel flee and guide the controller and be connected with the fire control ware communication.
Foretell switch board of fleing is placed and is keeping away from direct current charging screen CHC and direct current feed screen DISC one side, and the personnel flee and guide controller, laser emitter, the direction light band of fleing, human sensor, outdoor flee and accomplish the broadcaster, outdoor flee and accomplish confirm the button, indoor broadcast ware of fleing, flee and detect and guide ware, urgent light and the door body magnetism device are supplied power by uninterrupted power supply UPS alone.
The personnel escape guidance controller is in communication connection with the escape man-machine interaction screen.
According to the transformer substation direct-current fire escape system based on the lithium iron phosphate storage battery, the communication linkage of the fire-fighting controller and the personnel escape guidance controller is utilized, so that when the storage battery chamber is in a fire situation to start fire fighting, personnel can be rapidly detected, positioned and guided for escape, the sufficient escape time is fully shortened, and a good fire fighting effect can be provided.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
fig. 1 is a first plan view (front view) of a dc system;
FIG. 2 is a schematic plan view (top view) of a DC system;
FIG. 3 is an enlarged partial schematic view of FIG. 5;
fig. 4 is a schematic plan view of a lithium iron phosphate battery panel BAT;
FIG. 5 is a schematic diagram of the electrical principle of the battery module;
FIG. 6 is an electrical schematic diagram of the escape control cabinet;
fig. 7 is a schematic view of the escape detection and guidance device shown in fig. 6.
In the figure: the system comprises a direct current load room 1, a storage battery room 2, a partition wall 3, a fire-fighting controller 4, a storage battery communication management machine 5, a storage battery screen man-machine interaction screen 6, a temperature detector 7, an entrance guard management server 8, an entrance guard communication server 9, an intelligent key 10, a key adapter 11, an intelligent entrance guard lock 12, a personnel escape guidance controller 13, a system partition 14, a direct current system entrance door 15, a laser lamp strip 16, a laser emitter 161, an escape guidance strip 17, an escape direction light strip 171, an outdoor escape completion broadcaster 18, an outdoor escape completion confirmation button 19, an indoor escape broadcaster 20, an escape detection and guidance device 21, a life detector 216, a laser guidance generator 217, a fire-fighting device 22, a driver 23, an escape man-machine interaction screen 24, an emergency lighting lamp 25, an escape control cabinet 26 and a magnetic door body device 27.
Detailed Description
As shown in fig. 1-7, a transformer substation direct current fire escape system based on a lithium iron phosphate storage battery comprises a power supply direct current bus KM +, KM-, the power supply direct current bus KM +, KM-is connected with a direct current charging screen CHC, a lithium iron phosphate storage battery screen BAT and a direct current feed screen DISC, the direct current charging screen CHC and the direct current feed screen DISC are placed in a direct current load chamber 1, the lithium iron phosphate storage battery screen BAT is placed in a storage battery chamber 2, a partition wall 3 is arranged between the direct current load chamber 1 and the storage battery chamber 2, the power supply direct current bus KM +, KM-passes through the partition wall 3 to connect screens at two sides, a system partition door 14 is arranged on the partition wall 3, a direct current system entrance door 15 is arranged on the direct current load chamber 1 or the storage battery chamber 2, a mechanical door closer and a door magnetic attraction device 27 are arranged on the system partition door 14 and the direct current system entrance door 15, laser lamp strips 16 are arranged at two sides of an opening and closing passage of the system partition door 14 and the direct current system entrance door 15, the laser light belts 16 are provided with laser transmitters 161 distributed at intervals and can emit upward laser, a plurality of spaced escape guidance belts 17 are arranged between the two laser light belts 16, the escape guidance belts 17 are provided with escape direction light belts 171, an escape control cabinet 26 is arranged in the direct current load room 1, the escape control cabinet 26 is in communication connection with the fire-fighting controller 4 on the lithium iron phosphate storage battery BAT, the escape control cabinet 26 controls the laser transmitters 161, the escape direction light belts 171 and the magnetic door body device 27 to start and stop, an outdoor escape completion confirmation key 19 is arranged outside the direct current system entrance door 15, and the outdoor escape completion confirmation key 19 is electrically connected with the escape control cabinet 26.
The system partition door 14 and the direct current system entrance door 15 are made of fireproof materials, a mechanical door closer on the mechanical door closer can automatically close two doors, the mechanical door closer plays a role of physical isolation when a fire disaster occurs and prevents the fire from spreading, but the mechanical door closer does not lock the doors and can still be opened by manpower in consideration of personnel escape, under the condition that the fire disaster occurs or a fire protection system is started, the fire protection controller 4 sends a fire signal or a fire protection starting signal to the escape control cabinet 26, the escape control cabinet 26 controls the laser emitter 161 and the escape direction light band 171 to be started, laser can form a light column, the escape passage where the doors are located can be identified, the light column phenomenon in light smoke at the initial stage of the fire disaster is more obvious particularly by the strong penetrability of the laser, the passage can be identified well, and the escape direction light band 171 can guide personnel in the direction lost in smoke, when people escape outdoors and press the outdoor escape completion confirmation button 19, the escape control cabinet 26 controls the door magnetic attraction device 27 to attract the two door bodies, so as to prevent the door body from being opened due to overlarge fire and the fire from spreading to a direct current load part.
The upper ends of the vertical directions of the inner side walls of the direct current load chamber 1 and the storage battery chamber 2 are provided with escape detection and guidance devices 21, the escape detection and guidance devices 21 can rotate at least two shafts, the escape detection and guidance devices 21 are provided with life detectors 216 and laser guidance generators 217, the directions of the life detectors 216 and the laser guidance generators 217 are consistent, and the escape detection and guidance devices 21 are controlled by an escape control cabinet 26.
As shown in fig. 7, the escape detection and guidance device 21 has two rotation axes, and the life detector 216 and the laser guidance generator 217 of the escape detection and guidance device 21 can scan the whole indoor area when rotating along the two rotation axes.
When fire control controller 4 sends out the conflagration emergence or the fire control starts, life detection appearance 216 on the detection and director of fleing 21 scans through multiaxis rotational positioning in direct current load room 1 and the battery room 2 fast and detects, whether someone exists in the check room, if detect someone, laser guide generator 217 sends laser light column and shines the human body, laser light column moves to the escape route department in two laser lamp areas 16 with the shortest distance from the human body position, the people flee and guide, it is wrong to prevent that indoor personnel from taking place to escape when disorderly because of smog.
An indoor escape broadcaster 20 is provided in the dc load room 1 or the battery room 2, an outdoor escape completion broadcaster 18 is provided outside an entrance of the dc system entrance door 15, and the indoor escape broadcaster 20 and the outdoor escape completion broadcaster 18 are controlled by an escape control cabinet 26.
When fire fighting is started, the indoor escape broadcaster 20 is started indoors to broadcast escape methods and escape cautions, people are guided to escape according to the guidance of laser, the outdoor escape completion broadcaster 18 broadcasts to people who have escaped outdoors to remind people to check whether all people have escaped, and if yes, the outdoor escape completion confirmation key 19 is pressed down to lock the door body.
The escape guidance belt 17 is further provided with a human body sensor, and the human body sensor is connected with an escape control cabinet 26.
Whether the escape direction of the indoor personnel is correct or not is automatically judged by the sequence of the human body passing through the escape guidance belt 17 through the human body inductor, and the indoor escape broadcaster 20 is used for reminding.
And emergency illuminating lamps 25 are arranged on the top wall bodies of the direct current load chamber 1 and the storage battery chamber 2, and the emergency illuminating lamps 25 are electrically connected with an escape control cabinet 26.
Be equipped with personnel in foretell escape control cabinet 26 and flee and guide controller 13, personnel flee and guide controller 13 and driver 23 communication connection, driver 23 is to the rotation of the axle of detection and director 21 of fleing, life detection and laser emission control, personnel flee and guide controller 13's output and laser emitter 161, escape direction light area 171, door body magnetism device 27, indoor broadcast ware 20 of fleing, outdoor flee and accomplish broadcaster 18 and emergency lighting lamp 25 electricity and be connected, personnel flee and guide controller 13's input and outdoor flee and accomplish confirm that button 19 is electric to be connected, personnel flee and guide controller 13 and fire control controller 4 communication connection.
The escape control cabinet 26 is placed at one side far away from the direct current charging screen CHC and the direct current feed screen DISC, and the personnel escape guidance controller 13, the laser emitter 161, the escape direction light band 171, the human body sensor, the outdoor escape completion broadcaster 18, the outdoor escape completion confirmation button 19, the indoor escape broadcaster 20, the escape detection and guidance device 21, the emergency lighting lamp 25 and the door magnetic attraction device 27 are independently powered by the uninterruptible power supply UPS.
The independent power supply of the escape equipment and the UPS can still work normally to guide people to escape under the condition that the whole direct current system is broken down.
The person escape guidance controller 13 is in communication connection with the escape man-machine interaction screen 24.
The escape parameters can be set through the escape man-machine interaction screen 24.
Claims (8)
1. Direct current conflagration system of fleing of transformer substation based on lithium iron phosphate battery, direct current system includes power supply direct current generating line KM +, KM-, be connected with direct current charging screen CHC on the power supply direct current generating line KM +, KM-, lithium iron phosphate battery screen BAT and direct current feed screen DISC, direct current charging screen CHC and direct current feed screen DISC are placed in direct current load room (1), lithium iron phosphate battery screen BAT is placed in battery room (2), be equipped with between direct current load room (1) and battery room (2) partition wall (3), power supply direct current generating line KM +, KM-pass partition wall (3) and couple together the screen on both sides, its characterized in that: the escape system comprises a partition wall (3), a system partition door (14) is arranged on the partition wall (3), a direct-current system entrance door (15) is arranged on a direct-current load chamber (1) or a storage battery chamber (2), a mechanical door closer and a door magnetic attraction device (27) are arranged on the system partition door (14) and the direct-current system entrance door (15), laser lamp belts (16) are arranged on two sides of the ground of an opening and closing channel of the system partition door (14) and the direct-current system entrance door (15), laser transmitters (161) distributed at intervals are arranged on the laser lamp belts (16), upward laser can be emitted, a plurality of spaced escape guidance belts (17) are arranged between the two laser lamp belts (16), an escape direction light belt (171) is arranged on the escape guidance belts (17), an escape control cabinet (26) is arranged in the direct-current load chamber (1), the escape control cabinet (26) is in communication connection with a fire-fighting controller (4) on a lithium iron phosphate storage battery screen BAT, and the escape control cabinet (26) controls the laser transmitters (161), The escape direction light belt (171) and the door body magnetic attraction device (27) are started and stopped, an outdoor escape completion confirmation key (19) is arranged outside the direct current system entrance door (15), and the outdoor escape completion confirmation key (19) is electrically connected with the escape control cabinet (26).
2. The transformer substation direct-current fire escape system based on the lithium iron phosphate storage battery as claimed in claim 1, wherein the upper ends of the inner side walls of the direct-current load chamber (1) and the storage battery chamber (2) in the vertical direction are provided with escape detection and guidance devices (21), the escape detection and guidance devices (21) can rotate at least through two shafts, the escape detection and guidance devices (21) are provided with life detectors (216) and laser guidance generators (217), the life detectors (216) and the laser guidance generators (217) face in the same direction, and the escape detection and guidance devices (21) are controlled by an escape control cabinet (26).
3. A substation direct-current fire escape system based on a lithium iron phosphate storage battery as claimed in claim 2, characterized in that an indoor escape broadcaster (20) is arranged in the direct-current load room (1) or the storage battery room (2), an outdoor escape completion broadcaster (18) is arranged outside an entrance of the direct-current system entrance door (15), and the indoor escape broadcaster (20) and the outdoor escape completion broadcaster (18) are controlled by an escape control cabinet (26).
4. The transformer substation direct-current fire escape system based on the lithium iron phosphate storage battery as claimed in claim 3, wherein a human body sensor is further arranged on the escape guidance belt (17), and the human body sensor is connected with the escape control cabinet (26).
5. The transformer substation direct-current fire escape system based on the lithium iron phosphate storage battery as claimed in claim 4, wherein emergency lighting lamps (25) are arranged on the top wall bodies of the direct-current load chamber (1) and the storage battery chamber (2), and the emergency lighting lamps (25) are electrically connected with an escape control cabinet (26).
6. The lithium iron phosphate battery-based substation direct-current fire escape system according to claim 5, the escape control cabinet is characterized in that a person escape guide controller (13) is arranged in the escape control cabinet (26), the person escape guide controller (13) is in communication connection with a driver (23), the driver (23) controls the axial rotation of escape detection and the guide device (21), life detection and laser emission, the output end of the person escape guide controller (13) is electrically connected with a laser emitter (161), an escape direction optical band (171), a magnetic suction door body device (27), an indoor escape broadcaster (20), an outdoor escape completion broadcaster (18) and an emergency lighting lamp (25), the input end of the person guide escape controller (13) is electrically connected with an outdoor escape completion confirmation key (19), and the person guide escape controller (13) is in communication connection with a fire control device (4).
7. The transformer substation direct-current fire escape system based on the lithium iron phosphate storage battery is characterized in that the escape control cabinet (26) is placed at one side far away from the direct-current charging screen CHC and the direct-current feeding screen DISC, and a person escape guidance controller (13), a laser transmitter (161), an escape direction optical band (171), a human body sensor, an outdoor escape completion broadcaster (18), an outdoor escape completion confirmation key (19), an indoor escape broadcaster (20), an escape detection and guidance device (21), an emergency lighting lamp (25) and a door body magnetic attraction device (27) are independently powered by an Uninterruptible Power Supply (UPS).
8. The substation direct-current fire escape system based on the lithium iron phosphate storage battery as claimed in claim 7, wherein the personnel escape guidance controller (13) is in communication connection with the escape man-machine interaction screen (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210520786.4A CN114887256B (en) | 2022-05-13 | 2022-05-13 | Direct current conflagration system of fleing of transformer substation based on lithium iron phosphate battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210520786.4A CN114887256B (en) | 2022-05-13 | 2022-05-13 | Direct current conflagration system of fleing of transformer substation based on lithium iron phosphate battery |
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| Publication Number | Publication Date |
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| CN114887256A true CN114887256A (en) | 2022-08-12 |
| CN114887256B CN114887256B (en) | 2023-02-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210520786.4A Active CN114887256B (en) | 2022-05-13 | 2022-05-13 | Direct current conflagration system of fleing of transformer substation based on lithium iron phosphate battery |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU44131U1 (en) * | 2004-10-27 | 2005-02-27 | Открытое Акционерное Общество "Метрогипротранс" | FLAT STATION OF THE METRO |
| CN201230148Y (en) * | 2008-07-22 | 2009-04-29 | 夏曙光 | Ground buried type transforming station having escape duct |
| CN201791279U (en) * | 2010-05-13 | 2011-04-13 | 付少华 | Laser-guided emergency evacuation device |
| CN205302538U (en) * | 2016-01-05 | 2016-06-08 | 西南大学 | Sparse system of intelligence conflagration based on laser aiming |
| US20190323206A1 (en) * | 2018-04-20 | 2019-10-24 | Joy Global Surface Mining Inc | Medium voltage room for a mining shovel |
-
2022
- 2022-05-13 CN CN202210520786.4A patent/CN114887256B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU44131U1 (en) * | 2004-10-27 | 2005-02-27 | Открытое Акционерное Общество "Метрогипротранс" | FLAT STATION OF THE METRO |
| CN201230148Y (en) * | 2008-07-22 | 2009-04-29 | 夏曙光 | Ground buried type transforming station having escape duct |
| CN201791279U (en) * | 2010-05-13 | 2011-04-13 | 付少华 | Laser-guided emergency evacuation device |
| CN205302538U (en) * | 2016-01-05 | 2016-06-08 | 西南大学 | Sparse system of intelligence conflagration based on laser aiming |
| US20190323206A1 (en) * | 2018-04-20 | 2019-10-24 | Joy Global Surface Mining Inc | Medium voltage room for a mining shovel |
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| Title |
|---|
| 杨鼎家等: "《现代员工防灾避险应急手册》", 31 March 2012, 中国言实出版社 * |
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| CN114887256B (en) | 2023-02-07 |
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