CN106781987A - A kind of metro depot hybrid ventilation analogue experiment installation and experimental technique - Google Patents
A kind of metro depot hybrid ventilation analogue experiment installation and experimental technique Download PDFInfo
- Publication number
- CN106781987A CN106781987A CN201710134215.6A CN201710134215A CN106781987A CN 106781987 A CN106781987 A CN 106781987A CN 201710134215 A CN201710134215 A CN 201710134215A CN 106781987 A CN106781987 A CN 106781987A
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- 238000009423 ventilation Methods 0.000 title claims abstract description 51
- 238000002474 experimental method Methods 0.000 title claims abstract description 42
- 238000009434 installation Methods 0.000 title claims abstract description 20
- 238000004088 simulation Methods 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 5
- 239000000446 fuel Substances 0.000 claims description 13
- 239000011229 interlayer Substances 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 150000002739 metals Chemical class 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 9
- 239000003546 flue gas Substances 0.000 abstract description 9
- 238000009792 diffusion process Methods 0.000 abstract description 5
- 239000000779 smoke Substances 0.000 abstract description 5
- 238000004458 analytical method Methods 0.000 abstract description 4
- 239000002245 particle Substances 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000011161 development Methods 0.000 abstract description 2
- 230000004913 activation Effects 0.000 abstract 1
- 238000009529 body temperature measurement Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 7
- 238000011160 research Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 241001269238 Data Species 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 239000002355 dual-layer Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000004021 metal welding Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B25/00—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes
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- Engineering & Computer Science (AREA)
- Business, Economics & Management (AREA)
- Physics & Mathematics (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Ventilation (AREA)
Abstract
The present invention relates to a kind of metro depot hybrid ventilation analogue experiment installation and experimental technique, including building structure analogue means, and it is located at its internal temperature measuring equipment, ventilation unit, guiding device and burner, the data is activation detected by data acquisition device collecting temperature measurement apparatus is to computer, study Temperature Distribution when building interior occurs fire under hybrid ventilation effect, flue gas diffusion velocity, the rules such as smoke settlement speed, are that the development of correlation values analogue technique provides the foundation theory support.Beneficial effects of the present invention are:It is simple and easy to use, low cost, and temperature variations in building are can accurately measure, the experimental provision described in the invention is all-transparent structure, by observation analysis air flow path by trace particle, is easy to same numerical simulation result to compare.
Description
Technical field
The present invention relates to be used to having the metro depot hybrid ventilation of upper cover material industry smoke evacuation system in case of fire
The research field of operating efficiency, more particularly to a kind of metro depot hybrid ventilation analogue experiment installation and experimental technique.
Background technology
In recent years, as the metro depot containing upper cover material industry is on the increase, for the ventilating system of the type building
Continue to develop, develop from the basis of traditional gravity-flow ventilation and force ventilation and a kind of mixed ventilation pattern.For large-scale public affairs
Build together and build, the rejection ability and smoke evacuation for first having to ensure its control ability and flue gas diffusion under fire conditions to flue gas layer are imitated
Rate, and currently for the research of ventilation system for buildings security, mainly carried out by experimental provision and numerical simulation technology
's.For emerging hybrid ventilation, mainly conducted a research by numerical simulation technology and theoretical calculation, but there is no at present
Related Experimental Study., due to having lacked experimental study, therefore overall operation characteristic and building interior air-flow to hybrid ventilation
The research of the characteristics of motion is difficult to deeply, simultaneously as lacking enough experimental datas, it is impossible to set up complete accurate numerical model,
So being also difficult to flue gas when reflecting that hybrid ventilation runs of entirely accurate by numerical simulation technology in building interior
Kinetic characteristic.Therefore, the temperature point when building interior occurs fire under hybrid ventilation is acted on is studied by experimental provision
The rules such as cloth, flue gas diffusion velocity, smoke settlement speed, while for the development of correlation values analogue technique provides the foundation theory
Support, the security to improving hybrid ventilation also has and is of great significance.
The content of the invention
To solve the above problems, the invention provides a kind of metro depot hybrid ventilation analogue experiment installation and reality
Proved recipe method, it can be used for metro depot of the research containing upper cover material industry when there is fire, and the diffusion of the flue gas in building is fast
Degree, smoke settlement speed, the flue gas velocity of discharge and flue gas layer interfacial level Changing Pattern etc. are hybrid ventilation containing upper lid
The safety research applied in property metro depot provides direct experimental verification and theories integration, while being follow-up Numerical-Mode
Intend research and substantial amounts of data supporting is provided, to improve numerical model, improve simulation precision.
A kind of metro depot hybrid ventilation analogue experiment installation of the present invention and experimental technique, what it was used
Technical scheme is:Including building structure analogue means, burner, ventilation unit, guiding device, temperature measuring equipment, data
Harvester and computer, the building structure analogue means include bottom and the interlayer being located above the bottom, the bottom
Layer is the cuboid-type structure of inner hollow, and it includes base plate and top board in parallel, between the base plate and the top board
Connected by side plate, some side windows be equidistantly provided with each described side plate, the interlayer includes cover plate and several support columns,
The cover plate is parallel to be located at the top board top, and the cover plate is connected by some support columns with the top board, the top
Plate lower section is provided with smoke-proof pendant wall, and some penetrating openings are uniformly provided with the top board, and each described overthe openings is equipped with perpendicular
Well, wherein two vertical shafts positioned at bottom center are arranged right below the ventilation unit, it is perpendicular above each described ventilation unit
Well is equipped with the guiding device, and the center of the base plate is provided with the burner, parallel in the bottom and be equidistantly provided with
Some through holes are transversely provided with from top to bottom in some columns, each described column, in each through hole of the column at least one
The temperature measuring equipment is provided with, the temperature measuring equipment is connected by data wire with the data acquisition device, the number
It is connected with the computer by data wire according to harvester.
The building structure analogue means is integrally made up of fireproof glass and metal framework, wherein the cover plate, the bottom
The top board and side window of layer are fireproof glass, its all-transparent structure, by observation analysis air flow path by trace particle, are easy to
Compared with numerical simulation result;Embedded sensor arrangement, it is to avoid sensor and attachment means are to internal gas flow
Interference, improves result accuracy.
Further improve, a length of 2.2m of the building structure analogue means, a width of 1.4m, a height of 0.39m, wherein described
The thickness of cover plate, the top board and the base plate is 0.05m, the clear height of interlayer(I.e. cover plate lower surface to cover top surface it
Between distance)With the clear height of bottom(I.e. top board lower surface to plate upper surface distance)It is 0.12m.
Further improve, the edge spacing of the two neighboring side window is 0.08m on each side plate, each described side window
Length be 0.08m, its height is 0.036m.
Further improve, the length and width of each vertical shaft are 0.12m, height and are 0.096m, the adjacent vertical shaft of each two
Between central cross spacing 0.44m, its center longitudinal pitch 0.34m.
Further improve, the burner is adjustable square fuel tray, and the A/F of the fuel tray is
0.05m, its length is 0-0.1m, and the fuel dish opening depth is 0.05m.
Further improve, the ventilation unit includes jet blower, the jet blower is removably located at the top board
Lower wall on, upwards, it is driven by the motor with frequency modulator for the air outlet of the jet blower.
, less than the height of bottom top board, the guiding device guiding is by jet wind for the height of the highest point of the jet blower
The air-flow that machine accelerates is along interlayer top board uniform flow to outer boundary.
Further improve, if the guiding device includes the curved sheet metal of dry plate, some sheet metal welding structures
Into the curved face type structure that curved surface angle is 90 degree.
Further improve, the smoke-proof pendant wall is four roads, it constitutes " well " word structure, the test of four road smoke-proof pendant wall
Distance is 0.01m.
The present invention solve another problem is that being entered using above-mentioned metro depot hybrid ventilation analogue experiment installation
The method of row experiment, its step is,
(1)Assemble the building structure analogue means, burner, ventilation unit, guiding device, temperature measuring equipment, data
Harvester and computer, then carry out test calibration to data collecting system and temperature sensor, it is ensured that it uses normal;
(2)Ventilation needed for calculating, adjustment frequency converter makes the air quantity of the jet blower reach specified wind speed;
(3)Power needed for burner described in condition calculating according to required simulation, by adjusting calibrated burner
Opening size, the power of burner is adjusted to respective value;
(4)Demarcate used fuel and light to being filled in burner, by data acquisition device start recording data;
(5)After experiment proceeds to the specified time, stop data acquisition, extinguish the burner flame, the jet blower
Full-speed operation cooling experiment device is to room temperature.
Step(4)Described in fuel adding amount every time no more than 1/3rd of tray for combustion depth, fuel can be as pure
Spend the ethanol for 99.97%, experimental period is no more than 600 seconds, deformed upon with the inequality of being heated of each several part in avoiding device, influence
Internal gas flow kinetic stability, causes to increase experimental error.
For experimental data, can analyze high according to different height sensing data situation of change in vertical direction upper pillar stand
Wet flow layer thickness;Start the time of change according to temperature at different height, calculate High Temperature Gas fluid layer sinking speed;According to phase
Different column inner sensor temperature changes in same level face, analysis flue gas layer diffusion velocity in the horizontal direction, in this approach
Restore the kinetic characteristic and the working condition of ventilation unit of thermal current on space interior three-dimensional yardstick.
Beneficial effects of the present invention are:Establish containing upper cover material industry metro depot mixed ventilation analogue experiment installation, its
It is simple and easy to use, low cost, and can accurately measure temperature variations in building;Can be by adjusting different burning things which may cause a fire disaster intensity
And ventilation speed, comprehensively the performance of test ventilating system, improves the scope of application of device;Experimental provision described in the invention
It is all-transparent structure, by observation analysis air flow path by trace particle, is easy to same numerical simulation result to compare;It is embedded
Sensor arrangement, it is to avoid the interference of sensor and attachment means to internal gas flow, improves result accuracy.
Brief description of the drawings
In order that present disclosure is easier to be clearly understood, it is right below according to specific embodiment and with reference to accompanying drawing
The present invention is described in further detail.
Fig. 1 is dimensional structure diagram of the invention.
Fig. 2 is overlooking the structure diagram of the invention.
Fig. 3 is main structure diagram of the invention.
Fig. 4 is main view cross-sectional view of the invention
Fig. 5 is the vertical shaft and guiding device main structure diagram.
Fig. 6 is the column inner void and temperature sensor present position schematic diagram.
Wherein, 1- interlayers, 11- cover plates, 12- support columns, 2- bottoms, 21- base plates, 22- top boards, 23- side plates, 24- side windows,
3- data acquisition devices, 4- guiding devices, 5- ventilation units, 51- jet blowers, 6- vertical shafts, 7- columns, 8- smoke-proof pendant walls, 9-
Burner, 10- through holes, 11- data wires, 13- computers, 14- temperature measuring equipments.
Specific embodiment
As shown in figures 1 to 6, a kind of analogue experiment installation of metro depot hybrid ventilation, including building structure is simulated
Device, data acquisition device 3, guiding device 4, ventilation unit 5, burner 9, computer 13 and temperature measuring equipment 14, institute
State building structure analogue means be Dual-layer structure BUILDINGS MODELS, its size be 2.2m long, width 1.4m, 0.39m high, it is described
Building structure analogue means includes bottom 2 and sets interlayer 1 above it;The bottom 2 includes base plate 21 and in parallel
Top board 22, the base plate 21 and the top board 22 connect and compose the cuboid-type structure of inner hollow, institute by four side plates 23
Stating interlayer 1 includes cover plate 11 and several support columns 12, and the cover plate 11 is parallel to be located at the top of the top board 22, the cover plate 11
It is connected with the top board 22 by some support columns 12, the interlayer is in unenclosed construction, it is impartial on each described side plate
Away from some side windows 24 are provided with, the adjacent edge spacing of the adjacent side window 24 of each two is 0.08m, each described side window on each side plate
Length be 0.08m, its height is 0.036m.
The lower section of the top board 22 is provided with four roads into the smoke-proof pendant wall 8 of " well " font structure, under shown four road smoke-proof pendant wall
Visit distance and be 0.01m;Some penetrating openings are uniformly provided with the top board 22, each described overthe openings is equipped with vertical shaft
6, the length and width of each vertical shaft are 0.12m, height and are 0.096m, between the central cross between each two adjacent vertical shaft
Away from 0.44m, its center longitudinal pitch 0.34m;The ventilation that is arranged right below wherein positioned at two vertical shafts 6 of center is filled
5 are put, the vertical shaft 6 of each top of the ventilation unit 5 is equipped with the guiding device 4, and the center of the base plate 21 is provided with
The burner 9, the burner 9 is adjustable square fuel tray, and the A/F of the fuel tray is 0.05m,
Its length is 0-0.1m, and the fuel dish opening depth is 0.05m.
It is parallel and be equidistantly provided with some columns 7 between the base plate and top board, it is horizontal from top to bottom in each described column
To some through holes 10 are provided with, the temperature measuring equipment 14, the temperature are provided with least one through hole 10 of each column 7
Degree measurement apparatus 14 are connected by data wire 11 with the data acquisition device 12, and the data acquisition device 3 passes through data wire
11 are connected with the computer 13.
Wherein, the temperature measuring equipment 14 is the Pt-100 platinum heat of model WZP-187 stainless steels waterproof heat-resisting probe
Electric resistance sensor, its probe stretches out of length no more than 0.005m of through hole, to reduce bad shadow of the measuring system to experimental precision
Ring.
The ventilation unit 5 includes jet blower 51, and the jet blower 51 is removably located under the top board 22
On the wall of side, upwards, it is driven the air outlet of the jet blower 51 by the motor with frequency modulator, and the height of its highest point is less than
The height of bottom top board.
The model 8025-EC-220 of jet blower, size is 0.08m*0.08m*0.03m, the intelligent capital of frequency modulator model-
220, upwards, its maximum height is less than bottom top for the air outlet of the jet blower 5, if the guiding device 4 includes
The curved sheet metal of dry plate, some sheet metals are formed by welding the curved face type structure that curved surface angle is 90 degree.
The data acquisition device is PAC-I7015, and data acquiring frequency is 2Hz, 0.01 degree of accuracy.
Experimental technique is carried out using a kind of above-mentioned metro depot hybrid ventilation analogue experiment installation, its step is,
(1)By above-mentioned analogue experiment installation assembling finish after be placed on horizontal experimental bench calibrate, test data collection system and
Temperature sensor working condition, completes the demarcation of acquisition system and sensor;
(2)Adjustment frequency converter, makes the air quantity of the jet blower reach specified wind speed;
(3)Power needed for condition calculating burner according to required simulation, by adjusting calibrated burner open-mouth ruler
It is very little, the power of burner is adjusted to respective value;
(4)It is 99.97% ethanol and lights to purity is filled in burner, three points of adding amount no more than tray for combustion depth
One of, by data acquisition device start recording data;
(5)After experiment proceeds to the specified time, stop data acquisition, extinguish the burner flame, the jet blower
Then full-speed operation cooling experiment device can start next group of experiment to room temperature.
Preferred scheme of the invention is the foregoing is only, limitation of the invention further is not intended as, it is every using this
The various equivalence changes that description of the invention and accompanying drawing content are made are within protection scope of the present invention.
Claims (9)
1. a kind of metro depot hybrid ventilation analogue experiment installation and experimental technique, it is characterised in that tied including building
Structure analogue means, burner, ventilation unit, guiding device, temperature measuring equipment, data acquisition device and computer, it is described
Building structure analogue means includes bottom and the interlayer being located above the bottom, and the bottom is the cuboid-type of inner hollow
Structure, it includes base plate and top board in parallel, is connected by side plate between the base plate and the top board, each described side
Some side windows are equidistantly provided with plate, the interlayer includes cover plate and several support columns, and the cover plate is parallel to be located at the top
Plate top, the cover plate is connected by some support columns with the top board, and the top board lower section is provided with smoke-proof pendant wall, described
Some penetrating openings are uniformly provided with top board, each described overthe openings is equipped with vertical shaft, wherein positioned at the two of bottom center
Individual vertical shaft is arranged right below the ventilation unit, and the vertical shaft above each described ventilation unit is equipped with the guiding device, institute
The center for stating base plate is provided with the burner, parallel in the bottom and be equidistantly provided with some columns, in each described column
Some through holes are transversely provided with from top to bottom, and the temperature measuring equipment, institute are provided with each through hole of the column at least one
State temperature measuring equipment to be connected with the data acquisition device by data wire, the data acquisition device passes through data wire and institute
State computer connection.
2. a kind of metro depot hybrid ventilation analogue experiment installation according to claim 1 and experimental technique, its
It is characterised by, a length of 2.2m of the building structure analogue means, a width of 1.4m, a height of 0.39m, wherein the cover plate, described
The thickness of top board and the base plate is 0.05m.
3. a kind of metro depot hybrid ventilation analogue experiment installation according to claim 2 and experimental technique, its
It is characterised by, the edge spacing of the two neighboring side window is 0.08m on each side plate, and the length of each side window is
0.08m, its height is 0.036m.
4. a kind of metro depot hybrid ventilation analogue experiment installation according to claim 2 and experimental technique, its
It is characterised by, the length and width of each vertical shaft are 0.12m, height and are 0.096m, the center between the adjacent vertical shaft of each two
Horizontal spacing 0.44m, its center longitudinal pitch 0.34m.
5. a kind of metro depot hybrid ventilation analogue experiment installation according to claim 2 and experimental technique, its
It is characterised by, the burner is adjustable square fuel tray, and the A/F of the fuel tray is 0.05m, its length
It is 0-0.1m, the fuel dish opening depth is 0.05m.
6. a kind of metro depot hybrid ventilation analogue experiment installation according to claim 2 and experimental technique, its
It is characterised by, the ventilation unit includes jet blower, the jet blower is removably located in the lower wall of the top board,
Upwards, it is driven the air outlet of the jet blower by the motor with frequency modulator.
7. a kind of metro depot hybrid ventilation analogue experiment installation according to claim 2 and experimental technique, its
It is characterised by, if the guiding device includes the curved sheet metal of dry plate, some sheet metals are formed by welding curved surface angle
It is 90 degree of curved face type structure.
8. a kind of metro depot hybrid ventilation analogue experiment installation according to claim 2 and experimental technique, its
It is characterised by, the smoke-proof pendant wall is four roads, it constitutes " well " word structure, and the test distance of four road smoke-proof pendant wall is
0.01m。
9. reality is carried out using a kind of metro depot hybrid ventilation analogue experiment installation described in claim any one of 1-8
Proved recipe method, its step is,
(1)Assemble the building structure analogue means, burner, ventilation unit, guiding device, temperature measuring equipment, data
Harvester and computer, then carry out test calibration to data collecting system and temperature sensor, it is ensured that it uses normal;
(2)Ventilation needed for calculating, adjustment frequency converter makes the air quantity of the jet blower reach specified wind speed;
(3)Power needed for burner described in condition calculating according to required simulation, by adjusting calibrated burner
Opening size, the power of burner is adjusted to respective value;
(4)Demarcate used fuel and light to being filled in burner, by data acquisition device start recording data;
(5)After experiment proceeds to the specified time, stop data acquisition, extinguish the burner flame, the jet blower
Full-speed operation cooling experiment device is to room temperature.
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CN201710134215.6A CN106781987A (en) | 2017-03-08 | 2017-03-08 | A kind of metro depot hybrid ventilation analogue experiment installation and experimental technique |
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CN201710134215.6A CN106781987A (en) | 2017-03-08 | 2017-03-08 | A kind of metro depot hybrid ventilation analogue experiment installation and experimental technique |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN111931428A (en) * | 2020-07-06 | 2020-11-13 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Method and system for optimizing ocean nuclear power platform |
CN113457043A (en) * | 2021-07-08 | 2021-10-01 | 中国安全生产科学研究院 | Electric smoke blocking vertical wall-based fire smoke discharging system and method for atrium subway station |
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CN201465406U (en) * | 2009-07-15 | 2010-05-12 | 中国安全生产科学研究院 | Fire simulation experiment platform of subway station |
CN102750848A (en) * | 2012-06-08 | 2012-10-24 | 中国科学技术大学 | Subway station fire experiment simulation device |
CN103761918A (en) * | 2014-01-29 | 2014-04-30 | 中国科学技术大学 | High-rise building stairwell or vertical shaft fire experimental simulation device under action of external wind |
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CN1937006A (en) * | 2006-10-18 | 2007-03-28 | 中国安全生产科学研究院 | Subway disaster accident simulation testing platform |
CN101476973A (en) * | 2008-12-30 | 2009-07-08 | 中国科学技术大学 | Flue gas plume movement simulated experiment apparatus in thermal stratification surroundings |
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Publication number | Priority date | Publication date | Assignee | Title |
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CN111931428A (en) * | 2020-07-06 | 2020-11-13 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Method and system for optimizing ocean nuclear power platform |
CN111931428B (en) * | 2020-07-06 | 2023-06-20 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Method and system for optimizing ocean nuclear power platform |
CN113457043A (en) * | 2021-07-08 | 2021-10-01 | 中国安全生产科学研究院 | Electric smoke blocking vertical wall-based fire smoke discharging system and method for atrium subway station |
CN113457043B (en) * | 2021-07-08 | 2022-02-01 | 中国安全生产科学研究院 | Electric smoke blocking vertical wall-based fire smoke discharging system and method for atrium subway station |
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