CN211784184U - Fire safety research simulation device for long and narrow space - Google Patents
Fire safety research simulation device for long and narrow space Download PDFInfo
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- CN211784184U CN211784184U CN202020348240.1U CN202020348240U CN211784184U CN 211784184 U CN211784184 U CN 211784184U CN 202020348240 U CN202020348240 U CN 202020348240U CN 211784184 U CN211784184 U CN 211784184U
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Abstract
The patent of the utility model relates to a conflagration safety technical field specifically is a conflagration safety research analogue means in long and narrow space, take place system, fire extinguishing systems, data acquisition system and central control system including experimental channel, air current system, fire source. The device can control the factors of the length, the inclination, the position of a fire source, the type of a combustion object, the ventilation speed, the caliber of a ventilation opening and a fire extinguishing system, so that the simulation of a fire experiment in a long and narrow space is carried out under different working conditions, and the influence of the change of multiple factors in the long and narrow space on a fire development rule, a temperature field, a smoke field and a flow velocity field is analyzed. The method has wide application prospect and important practical guiding significance for smoke control, fire fighting rescue and risk evaluation of fire in a narrow and long space.
Description
Technical Field
The patent of the utility model relates to a conflagration safety technical field specifically is a conflagration safety research analogue means in long and narrow space.
Background
An elongated space is a type of space whose longitudinal length is much greater than the length and width of the cross-section. With the rapid development of city modernization in China and the importance of effective utilization of urban space, long and narrow space has the characteristics of high construction speed, large quantity and high urban space utilization rate in cities. The long and narrow space is visible everywhere in people's life, has building passageway, long and narrow building on the ground, has tunnel, utility tunnel, underpass under the ground. The construction of the narrow space provides an effective way for the effective utilization of the urban space.
The long and narrow space fire simulation experiment device disclosed in the prior art has relatively single function and cannot comprehensively research various influence factors of the fire characteristics of the long and narrow space. The chinese patent application No. 201820960612.9 provides a "simulation apparatus for studying fire overflow spreading in a narrow and long limited space in a wind environment", which can simulate and study the influence of different wind speeds, different narrow and long limited space widths, fire source power, opening sizes of firing rooms, and firing room structures on fire overflow spreading characteristics in the narrow and long limited space, and does not mention the influence of fire extinguishing systems, long and long space lengths, and the like on fire characteristics in the narrow and long limited space. Chinese patent application No. 201821613238.1 provides an experimental device for controlling a fire disaster in a damp and hot wind narrow and long space by using fine water mist, and only researches on control of a damp and hot wind narrow and long space fire disaster by using a fine water mist fire extinguishing system. Namely, the existing researches are all one-sided researches and have certain limitations.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem in order to overcome the shortcoming of prior art, the utility model provides a conflagration safety research analogue means in long and narrow space.
The utility model provides a technical scheme that its technical problem adopted does: a fire safety research simulation device for a long and narrow space is characterized by comprising an experimental channel, an airflow system, a fire source generation system, a fire extinguishing system, a data acquisition system and a central control system;
the experiment channel is formed by connecting a plurality of identical single experiment channels, the length of the experiment channel is adjustable, the experiment channel is placed on a flat plate with the inclination adjustable through an electric hydraulic jack, and two ends of the experiment channel are provided with detachable doors;
the airflow system comprises a mechanical intelligent regulation and control device, an air inlet, a variable frequency fan, an air outlet and a flue gas collection and treatment device, wherein the mechanical intelligent regulation and control device is connected with the air inlet through an air pipe, the air inlet and the air outlet are respectively connected with one variable frequency fan through air pipes, and the air outlet is connected with the flue gas collection and treatment device through an air pipe;
the fire source generating system comprises an electric track arranged on the center line of the floor of the experimental channel, a moving platform positioned on the electric track, a tray positioned on the moving platform, an igniter positioned on the edge of the tray and an ignition controller for controlling the igniter;
the fire extinguishing system is a water mist fire extinguishing system, and is connected with the central control system;
the data acquisition system comprises a temperature information acquisition system, a flue gas information acquisition system, an image information acquisition system and a flow field information acquisition system.
The bottom plate, the floor and the wall body on one side of the experimental channel are fireproof wall bodies, the wall body on the other side of the experimental channel is integrally fireproof glass, and the length-width-height ratio of the single experimental channel is 2-10: 1: 2-10.
The air inlet and the air outlet are respectively arranged at two ends of a top plate of the experiment channel, and the caliber of the air inlet can be adjusted through a central control system.
The wind speed of the fan can be adjusted through a central control system.
The mechanical intelligent regulation and control device and the variable frequency fan are connected with the central control system through the signal controller.
The electric rail with the movable platform is used for remotely controlling the position of the movable platform through a central control system, the igniter is controlled by an ignition controller, and the ignition controller is connected with the central control system.
The temperature information acquisition system comprises a thermocouple group arranged in the experimental channel and a temperature data processing device for receiving data measured by the thermocouple group; the smoke information acquisition system comprises a smoke analyzer, a probe and a smoke data processing device; the image information acquisition system comprises a laser sheet light source, a high-definition camera and an infrared imager which are arranged in the experiment channel; the flow field information acquisition system comprises a pitot tube, a micro-differential pressure sensor and a flow field data processing device.
The utility model has the advantages that: the device can control the factors of the length, the inclination, the position of a fire source, the type of a combustion object, the ventilation speed, the caliber of a ventilation opening and a fire extinguishing system, so that the simulation of a fire experiment in a long and narrow space is carried out under different working conditions, and the influence of the change of multiple factors in the long and narrow space on a fire development rule, a temperature field, a smoke field and a flow velocity field is analyzed. The method has wide application prospect and important practical guiding significance for smoke control, fire fighting rescue and risk evaluation of fire in a narrow and long space.
Drawings
FIG. 1 is a schematic diagram of the experimental apparatus of the present invention;
wherein, in the figure, 1 is a central control system; 2-an ignition controller; 3-an infrared imager; 4-high definition camera; 5, a tray; 6-an electric hydraulic jack; 7, an air inlet; 8, a mechanical intelligent regulation and control device; 9-water mist fire extinguishing system; 10-an air outlet; 11-variable frequency fan; 12, a flue gas collecting and processing device;
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the intended purpose of the present invention, the following detailed description is given to the embodiments, structures, features and effects according to the present invention in conjunction with the accompanying drawings and preferred embodiments.
Example one
As shown in fig. 1, a fire safety research simulation device for a long and narrow space is characterized by comprising an experimental channel, an air flow system, a fire source generation system, a fire extinguishing system, a data acquisition system and a central control system (1);
the experiment channel is formed by connecting a plurality of identical single experiment channels, the length of the experiment channel is adjustable, the experiment channel is placed on a flat plate with the inclination adjustable through electric hydraulic jacks (6) (6), and two ends of the experiment channel are provided with detachable doors;
the airflow system comprises a mechanical intelligent regulation and control device (8), an air inlet (7), a variable frequency fan (11), an air outlet (10) and a flue gas collection and treatment device (12), wherein the mechanical intelligent regulation and control device (8) is connected with the air inlet (7) through an air pipe, the air inlet (7) and the air outlet (10) are respectively connected with the variable frequency fan (11) through air pipes, and the air outlet (10) is connected with the flue gas collection and treatment device (12) through the air pipes;
the fire source generating system comprises an electric track arranged on the center line of the floor of the experimental channel, a moving platform positioned on the electric track, a tray (5) positioned on the moving platform, an igniter positioned at the edge of the tray (5) and an ignition controller (2) for controlling the igniter;
the fire extinguishing system is a water mist fire extinguishing system (9) and is connected with the central control system (1);
the data acquisition system comprises a temperature information acquisition system, a flue gas information acquisition system, an image information acquisition system and a flow field information acquisition system.
The bottom plate, the floor and the wall body on one side of the experimental channel are fireproof wall bodies, the wall body on the other side of the experimental channel is integrally fireproof glass, and the length-width-height ratio of the single experimental channel is 2-10: 1: 2-10.
The air inlet and the air outlet are respectively arranged at two ends of a top plate of the experiment channel, and the caliber of the air inlet (7) can be adjusted through the central control system (1).
The wind speed of the variable frequency fan (11) can be adjusted through the central control system (1).
The mechanical intelligent regulation and control device (8) and the variable frequency fan (11) are connected with the central control system (1) through a signal controller.
The electric rail with the movable platform is used for remotely controlling the position of the movable platform through a central control system (1), the igniter is controlled by an ignition controller (2), and the ignition controller (2) is connected with the central control system (1).
The temperature information acquisition system comprises a thermocouple group arranged in the experimental channel and a temperature data processing device for receiving data measured by the thermocouple group; the smoke information acquisition system comprises a smoke analyzer, a probe and a smoke data processing device; the image information acquisition system comprises a laser sheet light source, a high-definition camera (4) and an infrared imager (3), wherein the laser sheet light source, the high-definition camera and the infrared imager are arranged in an experiment channel; the flow field information acquisition system comprises a pitot tube, a micro-differential pressure sensor and a flow field data processing device.
Specifically, the thermocouple group is uniformly arranged in the experiment channel by adopting iron wires and fixing devices, and the temperature data processing device can process the acquired temperature information in real time and display the temperature change in the experiment channel on a display screen of the central controller; the probe sets are distributed on the central line of the experiment channel, and the smoke data processing device displays the concentration distribution of different gases in the experiment channel on the display screen of the central controller; the high-definition camera (4) is respectively arranged on one side of the fireproof glass and on the middle line position of one end of the test channel, the arrangement position of the infrared imager (3) changes along with the position of a fire source, and the image acquisition system presents a flame height curve and a smoke layer thickness curve, a flame development image and a smoke spreading flow image which change along with time on a display screen; the flow field data processing device can process the flow field change in the experimental channel in real time and display the flow field change on a display screen of the central controller.
One side of this device is the whole fire prevention glass that is of wall body, and for the data record and the image observation in the convenience of experiment, the experiment passageway both ends are equipped with can dismantle the door to the formation of the connection and the airtight space condition of a plurality of experiment passageways.
Combustible materials are arranged in the tray of the device, the position of the movable tray can be adjusted through the central control system, and the ignition controller is controlled to ignite.
The central control system of the device comprises a data processing device for processing and analyzing data, a computer for controlling factor change and a data display screen. The inclination of the experimental channel, the position of a fire source, ignition starting, the mechanical ventilation air speed, the caliber of a ventilation opening and a fire extinguishing starter can be adjusted and controlled through a computer, so that the simulation of a fire experiment in a long and narrow space is carried out under different working conditions, and the influence of the change of multiple factors in the long and narrow space on a fire development rule, a temperature field, a smoke field and a flow velocity field is analyzed. The method has wide application prospect and important practical guiding significance for smoke control, fire fighting rescue and risk evaluation of fire in a narrow and long space.
The above, only be the utility model discloses a preferred embodiment, it is not right the utility model discloses do any restriction, all according to the utility model discloses the technical entity all still belongs to any simple modification, change and the equivalent structure change of doing above embodiment the utility model discloses technical scheme's within the scope of protection.
Claims (7)
1. A fire safety research simulation device for a long and narrow space is characterized by comprising an experimental channel, an airflow system, a fire source generation system, a fire extinguishing system, a data acquisition system and a central control system (1);
the experiment channel is formed by connecting a plurality of identical single experiment channels, the length of the experiment channel is adjustable, the experiment channel is placed on a flat plate with the inclination adjustable through an electric hydraulic jack (6), and two ends of the experiment channel are provided with detachable doors;
the airflow system comprises a mechanical intelligent regulation and control device (8), an air inlet (7), a variable frequency fan (11), an air outlet (10) and a flue gas collection and treatment device (12), wherein the mechanical intelligent regulation and control device (8) is connected with the air inlet (7) through an air pipe, the air inlet (7) and the air outlet (10) are respectively connected with the variable frequency fan (11) through air pipes, and the air outlet (10) is connected with the flue gas collection and treatment device (12) through the air pipes;
the fire source generating system comprises an electric track arranged on the center line of the floor of the experimental channel, a moving platform positioned on the electric track, a tray (5) positioned on the moving platform, an igniter positioned at the edge of the tray (5) and an ignition controller (2) for controlling the igniter;
the fire extinguishing system is a water mist fire extinguishing system (9) and is connected with the central control system (1);
the data acquisition system comprises a temperature information acquisition system, a flue gas information acquisition system, an image information acquisition system and a flow field information acquisition system.
2. The fire safety research simulation device for an elongated space according to claim 1, wherein the top plate, the floor and one side wall of the experimental channel are fireproof walls, the other side wall of the experimental channel is integrally made of fireproof glass, and the length-width-height ratio of the single experimental channel is 2-10: 1: 2-10.
3. The fire safety research simulation device for the narrow and long space according to claim 1, wherein the air inlet (7) and the air outlet (10) are respectively arranged at two ends of the top plate of the experimental channel, and the caliber size of the air inlet (7) can be adjusted through the central control system (1).
4. An elongate space fire safety research simulator according to claim 1, wherein the wind speed of the variable frequency fan (11) is adjustable by the central control system (1).
5. A fire safety research simulator of an elongated space according to claim 1, characterized in that the mechanical intelligent control device (8) and the variable frequency fan (11) are connected to the central control system (1) through signal controllers.
6. An elongated space fire safety research simulator according to claim 1, wherein said motorized track is remotely controlled by a central control system (1), said ignition controller (2) being connected to the central control system (1).
7. A fire safety research simulation apparatus for an elongated space according to claim 1, wherein the temperature information collecting system includes a thermocouple group disposed in the experimental passage and a temperature data processing device for receiving data measured by the thermocouple group; the smoke information acquisition system comprises a smoke analyzer, a probe and a smoke data processing device; the image information acquisition system comprises a laser sheet light source, a high-definition camera (4) and an infrared imager (3), wherein the laser sheet light source, the high-definition camera and the infrared imager are arranged in an experiment channel; the flow field information acquisition system comprises a pitot tube, a micro-differential pressure sensor and a flow field data processing device.
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| CN202020348240.1U CN211784184U (en) | 2020-03-19 | 2020-03-19 | Fire safety research simulation device for long and narrow space |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113091798A (en) * | 2021-04-08 | 2021-07-09 | 清华大学合肥公共安全研究院 | Oil pan moving device for pipe gallery fire experiment |
| CN113398508A (en) * | 2021-06-16 | 2021-09-17 | 国网湖南省电力有限公司 | High-repeatability fire extinguishing test system and method for mountain fire helicopter |
-
2020
- 2020-03-19 CN CN202020348240.1U patent/CN211784184U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113091798A (en) * | 2021-04-08 | 2021-07-09 | 清华大学合肥公共安全研究院 | Oil pan moving device for pipe gallery fire experiment |
| CN113398508A (en) * | 2021-06-16 | 2021-09-17 | 国网湖南省电力有限公司 | High-repeatability fire extinguishing test system and method for mountain fire helicopter |
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