CN109859561A - Meet under fire working cup difference towards the platform and method of gravity-flow ventilation - Google Patents

Meet under fire working cup difference towards the platform and method of gravity-flow ventilation Download PDF

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Publication number
CN109859561A
CN109859561A CN201910280113.4A CN201910280113A CN109859561A CN 109859561 A CN109859561 A CN 109859561A CN 201910280113 A CN201910280113 A CN 201910280113A CN 109859561 A CN109859561 A CN 109859561A
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cup
fire
acquisition instrument
instrument group
platform
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CN109859561B (en
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邓玲
韩峥
杨晓菡
王炯
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Sichuan Institute Of Fire Protection Ministry Of Emergency Management
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Sichuan Institute Of Fire Protection Ministry Of Emergency Management
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Abstract

The invention discloses meet cup difference under fire working mainly to solve the problems, such as existing in the prior art there is no for the means and scheme that smoke proof staircase cup difference is studied towards the ventilation effect reliability of natural ventilation port under fire working towards the platform and method of gravity-flow ventilation.The platform includes staircase ontology, the cup being connect with staircase ontology, the room on fire being connected to cup, the casement window being provided on cup wall, air curtain system on the outside of cup is set, it is mounted in staircase ontology, cup and room on fire and is used for the acquisition instrument group of temperature collection, smoke density and wind speed, the data collector connecting with acquisition instrument group by signal, and is connect by data line with data collector and is used to show the PC machine with statistics gatherer data.Through the above scheme, invention achieves to the different purposes tested towards natural ventilation port ventilation effect, there is very high practical value and promotional value.

Description

Meet under fire working cup difference towards the platform and method of gravity-flow ventilation
Technical field
The invention belongs to fire-fighting domains, in particular, being to be related to meeting under fire working cup difference towards gravity-flow ventilation Platform and method.
Background technique
Cup, which is the stream of people, is entering Fire lift, smoke proof staircase or not before the enclosed stairwell of gravity-flow ventilation Excessive space is usually set to Fire lift entrance for personnel's passage, the cubicle of evacuation, or is set to smoke proof staircase Entrance is to prevent flue gas from entering the cubicle of smoke proof staircase, its Smoke prevention measure includes nature smoke-stop and machinery under normal conditions Two kinds of Smoke prevention.
3.1.3 item in " building Smoke prevention smoke evacuation system technical standard " GB51251-2017 proposes (" fire protection design of building rule Model " the 8.5.1 item in GB50016-2014 is similar, and is strong item), public building of the building height less than or equal to 50m and industry Building, building height be less than or equal to 100m residential housing, smoke proof staircase, independent cup, common antechamber, share cup and The room before the fire hydrant elevator should use natural ventilation system;When that natural ventilation system cannot be arranged, Ying Caiyong mechanism contact type sensor system System.
The selection of fume-resisting system should meet when independent cup or common antechamber meet following condition for the moment, and staircase can It is not provided with fume-resisting system: (1) using open balcony or recessed corridor, (2) open exterior window equipped with two or more difference direction, And independent two exterior window areas of cup are not less than 2.0m respectively2, two exterior window areas of common antechamber are not less than 3.0m respectively2
" cup or common antechamber have different directions open exterior window " in provision does not have in related specifications and standard Have the definition of clearly different directions, regulation do not made between the distance the exterior window of different directions yet, when design it is possible that The case where meeting code requirement but cannot be guaranteed natural draught system effect.Therefore, one kind is designed dedicated for Smoke prevention under fire working The full-scale platform of staircase cup difference towards gravity-flow ventilation reliability consideration becomes skilled artisan urgently The technical issues of solution.
Summary of the invention
The purpose of the present invention is to provide meet platform and method of the cup difference towards gravity-flow ventilation, master under fire working Solve it is existing in the prior art there is no under fire working smoke proof staircase cup difference towards natural ventilation port The problem of means and scheme that ventilation effect reliability is studied.
To achieve the goals above, The technical solution adopted by the invention is as follows:
Meet the platform of cup difference under fire working towards gravity-flow ventilation, including staircase ontology, with staircase ontology The cup connected by fire resistant doorsets is connected to cup by door opening and is used to simulate room on fire on fire, several to be provided with cup The air curtain system that air quantity and wind direction on the outside of cup and to external ambient wind are adjusted is arranged in casement window on different walls System is mounted in staircase ontology, cup and room on fire and is used for the acquisition instrument group of temperature collection, smoke density and wind speed, with The data collector that acquisition instrument group is connected by signal, and by data line connect with data collector and be used for display and The PC machine of statistics gatherer data.
Further, the acquisition instrument group include be separately positioned on staircase ontology, cup and room wall on fire and The first acquisition instrument group, the second acquisition instrument group and the third acquisition instrument group being connect with data collector signal.
Further, the first acquisition instrument group is distributed on this walling of staircase including four and acquires with data First thermocouple of device signal connection.
Further, the second acquisition instrument group include five be distributed on cup wall and with data collector signal Second thermocouple of connection, four are distributed on cup wall and the anemobiagraph connecting with data collector signal and one For monitoring the smoke density instrument of smoke density.
Specifically, the third acquisition instrument group include three be distributed on room wall on fire and with data collector signal The third thermocouple of connection, wherein the first thermocouple, the second thermocouple are identical with third thermocouple structure.
Meet cup difference under fire working to include the following steps: towards the method for gravity-flow ventilation
(S1) platform as claimed in any one of claims 1 to 5 is built, lights fire source in interior on fire;
(S2) according to different experiment conditions, it is determined whether to enable casement windows and fire resistant doorsets;
(S3) staircase sheet is acquired by the first acquisition instrument group, the second acquisition instrument group and third acquisition instrument group respectively Body, cup and indoor relevant parameter information on fire, and pass through signal transmission form for collected parameter through data collector It is sent in PC machine and shows and save;
(S4) it moving air curtain system and is configured according to air quantity and wind direction of the experiment demand to ambient wind in platform;
(S5) phase of the first acquisition instrument group, the second acquisition instrument group and the acquisition of third acquisition instrument group is shown by PC machine It closes parameter information and saves;
(S6) after testing, the monitoring information stored in PC machine is analyzed, judged, is arranged.
Compared with prior art, the invention has the following advantages:
(1) proposed by the present invention a kind of logical towards natural ventilation port dedicated for smoke prevention staircase cup difference under fire working The reliability and associated safety enhancements of wind effect carry out the platform of research and experimental verification, have filled up in industry in the field Research blank;By the platform applied the present invention under fire working, the research achievement of acquisition can be existing fire protection rule System revision solid technical support is provided, make the design of the natural draught system mouth of smoke proof staircase cup and build to examine have method can According to, have something to base on;And the configuration of the present invention is simple, design are rationally, easy to use, precisely simultaneously by acquisition instrument group institute measured data And it is representative strong.
(2) natural draught system mouth of the present invention is opened flat window position and fire source power and can be adjusted according to actual needs, this Sample both can more truely and accurately reflect different fire scenarios;This platform high degree of automation simultaneously, air curtain system can be real Now to the adjusting of air quantity and wind direction, thermocouple, smoke density instrument and the collected data of anemobiagraph can also pass through data collector reality When be transmitted to Computer display and storage.
(3) present invention not only allows for entirety and has also contemplated key in the arrangement of thermocouple, smoke density instrument and anemobiagraph Position is provided with collection point in the middle part of room on fire, cup and staircase, is also provided with collection point at the multiple natural mouths of cup, Ensure that the representativeness and authenticity of the acquired data of the present invention.
Detailed description of the invention
Fig. 1 is system structure diagram of the invention.
Fig. 2 is the mounting structure schematic diagram of the first acquisition instrument group of the invention.
Fig. 3 is the mounting structure schematic diagram of the second acquisition instrument group of the invention.
Fig. 4 is the mounting structure schematic diagram of third acquisition instrument group of the invention.
In above-mentioned attached drawing, the corresponding component names of appended drawing reference are as follows:
1- staircase ontology, 2- cup, the room on fire 3-, 4- casement window, 5- air curtain system, 6- data collector, 7-PC machine, The first thermocouple of 8-, the second thermocouple of 9-, 10- anemobiagraph, 11- smoke density instrument, 12- third thermocouple, 13- fire source.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples, and embodiments of the present invention include but is not limited to The following example.
Embodiment
As shown in Figures 1 to 4, meet cup difference under fire working platform and method towards gravity-flow ventilation, including building Ontology 1 between ladder, the cup 2 being connect with staircase ontology 1 by fire resistant doorsets are connected to cup 2 by door opening and are used to simulate The room on fire 3 of fire, several casement windows 4 being provided on the different walls of cup 2, setting is in 2 outside of cup and to external ambient wind Air quantity and the air curtain system 5 that is adjusted of wind direction, be mounted in staircase ontology 1, cup 2 and room on fire 3 and for acquiring The acquisition instrument group of temperature, smoke density and wind speed, the data collector 6 being connect with acquisition instrument group by signal, and pass through Data line connect with data collector 6 and for showing and the PC machine 7 of statistics gatherer data.
It is bulky and hulking in order to avoid platform when carrying out platform building, therefore 2 part of cup is set using conventional full-size Meter, staircase ontology 1 and room on fire 3 are designed using reduced scale, which can take into account true and reliable and compact-sized two side Face characteristic.
Early-stage preparations: 13 position of fire source is arranged at the middle part of room 3 on fire, and three third thermocouples 12 have been mounted on The surface of fiery 3 fire source 13 of room is in genesis analysis, and the position distribution apart from ceiling is 0m, 0.5m and 1m (such as Fig. 4);And it puts down The casement window 4 of platform is to be provided on all positions that can be opened a window of cup 2, and meet the related request in background technique, is put down Windowing 4 specifically opens up situation as shown in Figure 1, the side that air curtain system 5 is located at 2 wall of cup (is not the building connecting with cup 2 3 place side of ontology 1 and room on fire between ladder), 5 equipment of air curtain system itself can move placement position, and the air outlet in system is also The adjustment of wind speed and direction can be carried out according to experiment demand, the present invention can more truely and accurately be reflected not using above equipment Same fire scenario, greatly extends the scope of application of the invention.It is distributed and pacifies in the centre of cup 2, door opening and the window's position Anemobiagraph 10 is filled, three are located at three face wall bodies of cup, can be moved to corresponding position according to the difference of windowing position, in addition One is located on cup 2 and the fire resistant doorsets of 1 junction of staircase ontology, and is located in cup 2, five second heat set in addition Wherein four set-up modes of galvanic couple 9 are identical as anemobiagraph 10, and in addition one is set to 2 medium position of cup, while by cigarette Densimeter 11 is mounted on the inside (such as Fig. 3) of cup 2, and wherein the best door opening of smoke density instrument 11 is installed in parallel;In staircase ontology 1 It is middle by four the first thermocouple genesis analysis in staircase ontology 1, and simulate conventional home building height and be configured, it is average Interval height is 3m (such as Fig. 2).
When test: lighting fire source 13, it is determined whether to enable casement windows 4 and fire resistant doorsets according to different experiment conditions, and will Air curtain system 5 accesses power supply preparation, after fire source 13 blazes up, in interconnected cup 2 and room on fire 3 inherently It heats up and is full of smog, second and third thermocouple being arranged in cup 2 and room on fire 3 at this time is real by collected temperature information When transferred information in data collector 6 by wired or wireless transmission mode, with data collector 6 pass through data line connect The PC machine 7 that connects carries out real-time display and the smoke density instrument 11 that saves, while being arranged in cup 2 is by indoor smokescope information It feeds back in PC machine 7, with the increase of smokescope, air curtain system 5 is moved in not timing, and according to experiment demand pair The air quantity and wind direction of ambient wind are configured in platform, to observe the wind speed information of the acquisition of anemobiagraph 10, and PC machine 7 is observed In the case where different wind directions, the data situation of each anemobiagraph 10, smoke density instrument 11 and second and third thermocouple monitoring, Simultaneously because staircase ontology 1 is connect with cup 2 by fire resistant doorsets, since fire resistant doorsets can obstruct certain heat and smog, By PC machine 7 observe staircase ontology 1 in the first thermocouple 8 monitoring information, then sustained combustion after a certain period of time, to PC The monitoring data information saved in machine 7 is analyzed and determined, wherein the air curtain system and data collector in the present invention are existing There is technology, therefore no longer its working principle is repeated in the present invention.
The type of different experiment conditions according to whether open casement window, open casement window position, whether open it is anti- Vent and different, such as experiment scene A: opening west side and each one square of the window in east side, staircase ontology and cup it is anti- Vent is closed, and air curtain system is closed;Experiment scene B: east side and each one square of the window in southern side are opened, staircase ontology is with before The fire resistant doorsets of room are opened, and air curtain system is closed;Experiment scene C: west side and each one square of the window in southern side, staircase sheet are opened The fire resistant doorsets of body and cup are closed, and air curtain system is opened, and setting wind direction is west wind, and wind speed is 2m/s etc., wherein west side, east side The equal nouns of locality are described according to the positional relationship in Fig. 1, and the north side that staircase ontology in Fig. 1 is located at cup is defaulted.
By the platform applied the present invention under fire working, the research achievement of acquisition can be the system of existing fire protection rule Revision provides solid technical support, and examining the design of the natural draught system mouth of smoke proof staircase cup and building, equal there are laws to abide by, has According to can follow;And the configuration of the present invention is simple, design are rationally, easy to use, and generation accurate by acquisition instrument group institute measured data Table is strong.
Above-described embodiment is merely a preferred embodiment of the present invention, and it is not intended to limit the protection scope of the present invention, as long as using Design principle of the invention, and the non-creative variation worked and made is carried out on this basis, it should belong to of the invention Within protection scope.

Claims (6)

1. meeting under fire working cup difference towards the platform of gravity-flow ventilation, which is characterized in that including staircase ontology (1), The cup (2) being connect with staircase ontology (1) by fire resistant doorsets is connected to cup (2) by door opening and is used to simulate on fire Room (3) on fire, several casement windows (4) being provided on the different walls of cup (2), setting is on the outside of cup (2) and to external rings The air curtain system (5) that the air quantity and wind direction of border wind are adjusted is mounted on staircase ontology (1), cup (2) and room on fire (3) In and be used for the acquisition instrument group of temperature collection, smoke density and wind speed, data acquisition connect with acquisition instrument group by signal Device (6), and connect by data line with data collector (6) and be used to show and the PC machine of statistics gatherer data (7).
2. the cup difference according to claim 1 that meets under fire working is towards the platform of gravity-flow ventilation, which is characterized in that The acquisition instrument group includes being separately positioned on staircase ontology (1), cup (2) and room on fire (3) wall and adopting with data The first acquisition instrument group, the second acquisition instrument group and the third acquisition instrument group of storage (6) signal connection.
3. the cup difference according to claim 2 that meets under fire working is towards the platform of gravity-flow ventilation, which is characterized in that The first acquisition instrument group includes four and is distributed on staircase ontology (1) wall and connect with data collector (6) signal The first thermocouple (8).
4. the cup difference according to claim 3 that meets under fire working is towards the platform of gravity-flow ventilation, which is characterized in that The second acquisition instrument group include five be distributed on cup (2) wall and connect with data collector (6) signal second Thermocouple (9), four anemobiagraphs (10) for being distributed on cup (2) wall and being connect with data collector (6) signal, Yi Jiyi Prop up the smoke density instrument (11) for monitoring smoke density.
5. the cup difference according to claim 4 that meets under fire working is towards the platform of gravity-flow ventilation, which is characterized in that The third acquisition instrument group include three be distributed on room on fire (3) wall and connect with data collector (6) signal the Three thermocouple (12), wherein the first thermocouple (8), the second thermocouple (9) are identical with third thermocouple (12) structure.
6. meeting under fire working cup difference towards the method for gravity-flow ventilation, which comprises the steps of:
(S1) platform as claimed in any one of claims 1 to 5 is built, lights fire source in interior on fire;
(S2) according to different experiment conditions, it is determined whether to enable casement windows and fire resistant doorsets;
(S3) by the first acquisition instrument group, the second acquisition instrument group and third acquisition instrument group acquire respectively staircase ontology, Cup and indoor relevant parameter information on fire, and transmitted collected parameter through data collector by signal transmission form It shows and saves on to PC machine;
(S4) it moving air curtain system and is configured according to air quantity and wind direction of the experiment demand to ambient wind in platform;
(S5) related ginseng that the first acquisition instrument group, the second acquisition instrument group and third acquisition instrument group acquire is shown by PC machine Number information simultaneously saves;
(S6) after testing, the monitoring information stored in PC machine is analyzed, judged, is arranged.
CN201910280113.4A 2019-04-09 2019-04-09 Platform and method for meeting natural ventilation of front chamber in different directions under fire working condition Active CN109859561B (en)

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CN114622744A (en) * 2022-01-14 2022-06-14 上海品览数据科技有限公司 Automatic judgment method for smoke prevention measures of heating and ventilation special staircases and front rooms
CN114626121A (en) * 2022-01-14 2022-06-14 上海品览数据科技有限公司 Automatic arrangement method for pressurization system of ground part of central building in heating and ventilation profession

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