CN112581848A - Tunnel fire smoke motion measurement simulation test system - Google Patents
Tunnel fire smoke motion measurement simulation test system Download PDFInfo
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- CN112581848A CN112581848A CN202011460717.6A CN202011460717A CN112581848A CN 112581848 A CN112581848 A CN 112581848A CN 202011460717 A CN202011460717 A CN 202011460717A CN 112581848 A CN112581848 A CN 112581848A
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- 239000000779 smoke Substances 0.000 title claims abstract description 106
- 238000012360 testing method Methods 0.000 title claims abstract description 47
- 238000005259 measurement Methods 0.000 title claims abstract description 46
- 238000004088 simulation Methods 0.000 title claims abstract description 34
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 96
- 239000003546 flue gas Substances 0.000 claims abstract description 96
- 239000000700 radioactive tracer Substances 0.000 claims abstract description 93
- 230000008859 change Effects 0.000 claims abstract description 7
- 238000002485 combustion reaction Methods 0.000 claims description 44
- 239000000446 fuel Substances 0.000 claims description 16
- 238000004043 dyeing Methods 0.000 claims description 14
- 239000007921 spray Substances 0.000 claims description 5
- -1 traced flue gas Chemical compound 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 23
- 239000002245 particle Substances 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 4
- 238000012800 visualization Methods 0.000 abstract 1
- 230000008569 process Effects 0.000 description 8
- 238000000917 particle-image velocimetry Methods 0.000 description 7
- 239000003517 fume Substances 0.000 description 6
- 238000001514 detection method Methods 0.000 description 5
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- 239000000463 material Substances 0.000 description 2
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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
Abstract
The invention discloses a tunnel fire smoke movement measurement simulation test system, which comprises: the device comprises a tunnel model, a fire source system, a tracing system, a driving system and a shooting system. The tunnel model is scaled up according to the actual tunnel in proportion; the fire source system is used for generating high-temperature flue gas to be released into the tunnel model. The tracer system produces a small number of colored tracer flue gas particles for characterizing flue gas movement. Meanwhile, the temperature of the tracer particles is controllable, and the density of the tracer smoke is adjusted through the temperature, so that the density of the tracer smoke is close to that of the smoke around the tracer smoke. The shooting system adopts a shooting method to record the space positions of the traced smoke at different moments, and the smoke movement speed is obtained according to the position change of the traced smoke. The tracing system and the shooting system are fixed on the driving system and can move in the tunnel, so that the motion law of the smoke in the whole tunnel is measured. The tracing particles are good in visualization effect after being dyed, the density is controllable through temperature, and the measurement precision is high.
Description
Technical Field
The invention relates to the technical field of fire safety, in particular to a tunnel fire smoke motion measurement simulation test system.
Background
At present, a fire smoke measuring system in a tunnel mainly adopts a thermocouple temperature measuring method, a camera shooting and recording method, a single-chip light source shooting method and a PIV particle image speed measuring method to record the motion rule of smoke. The thermocouple temperature measuring method mainly utilizes the temperature difference between the flue gas and the ambient air, the position where the front edge of the flue gas arrives is measured by arranging thermocouples in space, and the moving direction of the front edge of the flue gas is further determined by the temperature change of a plurality of groups of thermocouples. The camera shooting and recording method mainly identifies according to the color difference between the smoke and the surrounding air, but only motion rules at the front edge position are limited, and the motion rules in the smoke are difficult to accurately identify. The application range of a thermocouple temperature measurement method and a camera shooting and recording method is limited, the position change of the front edge of the smoke can be measured, and the motion rule of the smoke in the whole tunnel cannot be measured. The single-chip light source shooting and recording method mainly depends on laser to clearly show the movement track of the smoke, so that the movement direction and the form of the smoke are determined, but the movement speed of the smoke cannot be quantitatively calculated. For the PIV particle image velocimetry, the motion law of the flue gas is mainly measured by tracer particles, and the method is a common method for measuring a flow field. But the density of the trace particles is required to be consistent with that of the substances in the measured flow field in the measurement process, the requirement on the trace particles is high, the temperature of the flue gas in the tunnel changes at any time, and the motion rule of the flue gas is difficult to accurately reflect by a single trace particle, so that the measurement precision is poor. This is also the reason why the PIV particle image velocimetry method can not be used in large space or large range at present. Meanwhile, the PIV particle image velocimetry has relatively high cost, and the core technology is monopolized by foreign manufacturers. Therefore, how to develop a portable tunnel smoke motion measurement demonstration device with relatively high precision and relatively low cost is of great importance to the research on the tunnel fire smoke motion law.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the invention aims to provide a tunnel fire smoke motion measurement simulation test system which can improve the convenience and accuracy of tunnel fire smoke flow field distribution measurement.
According to the embodiment of the invention, the tunnel fire smoke movement measurement simulation test system comprises: the device comprises a tunnel model, a first valve and a second valve, wherein a first outlet is arranged at one axial end of the tunnel model, and a second outlet is arranged at the other axial end of the tunnel model; the combustion flue gas generated by the fire source system is released into the tunnel model; the tracing system is arranged in the tunnel model so as to spray tracing flue gas into the tunnel model, and is provided with a temperature control device which collects the temperature of combustion flue gas in the tunnel and adjusts the temperature of the tracing flue gas according to the temperature of the combustion flue gas; and the shooting system is arranged in the tunnel model and is used for shooting the position change of the tracer smoke.
According to the tunnel fire smoke movement measurement simulation test system provided by the embodiment of the invention, smoke generated in a tunnel fire process is simulated through the fire source system arranged in the tunnel model, then tracer smoke with controllable temperature is quantitatively introduced, the tracer smoke has strong following performance on combustion smoke, flows along with the combustion smoke, and the flowing rule of the tracer smoke is recorded by utilizing the shooting system. Further, a flow field distribution rule of the fire smoke of the tunnel is obtained. Through dyeing the tracer flue gas, the tracer flue gas is obviously different with the burning flue gas, makes the visibility of flue gas flow process strong, and the shooting system of being convenient for shoots, is favorable to follow-up analysis to the photo, makes the accuracy of experimental testing result obtain improving.
In addition, the tunnel fire smoke movement measurement simulation test system according to the above embodiment of the present invention may further have the following additional technical features:
in some embodiments, the tracer system is movably disposed in the tunnel model and continuously injects tracer smoke into the tunnel, and accordingly, the camera system is movably disposed in the tunnel model.
In some embodiments, a transverse rail extending in an axial direction is provided in the tunnel model, and the tracer system is movable in the axial direction along the transverse rail.
In some embodiments, a longitudinal rail extending in a vertical direction is provided in the tunnel model, and the tracer system is movable in the vertical direction along the longitudinal rail.
In some embodiments, the tracing system includes a smoke generating device, a dyeing device and a nozzle, which are connected in sequence, and the smoke generated by the smoke generating device forms tracing smoke after being dyed by the dyeing device and is sprayed into the tunnel model through the nozzle.
In some embodiments, the opening position of the nozzle is adjustable.
In some embodiments, the temperature control device is connected to a thermocouple disposed adjacent to the nozzle.
In some embodiments, the camera of the camera system is parallel to the opening of the nozzle.
In some embodiments, the fire source system includes a fuel supply system and a combustion bowl interconnected to one another, the combustion bowl being located within the tunnel model.
In some embodiments, at least one wall of the tunnel model is provided with a transparent window, and a plurality of support structures are arranged at the bottom of the tunnel model.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a schematic structural diagram of a tunnel fire smoke movement measurement simulation test system according to an embodiment of the invention.
Reference numerals:
a tunnel fire smoke movement measurement simulation test system 100;
a tunnel model 1; a support structure 11;
a fire source system 2; a combustion tank 21; the fuel supply system 22;
a tracing system 3; a temperature control device 31; a thermocouple 311; a flue gas generating device 32; a dyeing device 33; a nozzle 34;
a photographing system 4;
a drive system 5; a cross rail 51; longitudinal rails 52.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
A tunnel fire smoke movement measurement simulation test system 100 according to an embodiment of the present invention will be described with reference to fig. 1. The tunnel fire smoke movement measurement simulation test system 100 can simulate tunnel fires under different powers, measure smoke flow laws at different positions in a tunnel, and provide reference for smoke prevention and control after the fire occurs in the tunnel.
Referring to fig. 1, a tunnel fire smoke movement measurement simulation test system 100 includes: the tunnel model 1, the fire source system 2, the tracer system 3, the camera system 4 and the drive system 5. The tunnel model 1 is provided with a first outlet at one axial end and a second outlet at the other axial end. The combustion pool 21 of the fire source system 2 is arranged at the lower part of the tunnel model 1, the tracer system 3 is arranged in the tunnel model 1, the shooting system 4 is also arranged in the tunnel model 1, and the driving system 5 is mechanically connected with the tracer system 3 and the shooting system 4. The tunnel model 1 can be scaled down according to the actual requirement and the tunnel size, and the driving system 5 can control the tracing system 3 and the photographing system 4 through the transverse guide rail 51 and the longitudinal guide rail 52 without limitation.
Specifically, as shown in fig. 1, the tunnel model 1 axially defines an inner space, the inner space is provided with a combustion pool 21, and the fire source system 2 releases flue gas through fuel combustion in the combustion pool 21. Preferably, the combustion pool 21 can be shifted relative to the tunnel model, so that fires at different positions inside the tunnel can be simulated, i.e. combustion fumes generated by the fire source system 2 can be released into the tunnel model 1 at different positions inside the tunnel model 1. Meanwhile, the fire source system 2 can adjust the combustion power, simulate the fire conditions with different severity degrees, enrich the simulation test conditions and contribute to increasing the measurement data.
Further, tracer system 3 has temperature control device 31, and temperature control device 31 has temperature measurement function and accuse temperature function, can gather the temperature of burning flue gas to adjust the temperature of tracer flue gas according to the temperature data of gathering, make the temperature of tracer flue gas approach to the temperature of burning flue gas. For gas, the temperature directly determines the corresponding density, namely, the density of the traced smoke approaches to the density of the burning smoke, and then the traced smoke can be well fused into the tunnel smoke and moves along with the smoke in the tunnel. At the moment, the fluid form of the tracer flue gas is similar to that of the surrounding flue gas, and the flow rule of the combustion flue gas can be obtained by shooting and recording the flow rule of the tracer flue gas, so that data support is provided for arrangement of fire-fighting facilities in the tunnel, arrangement height and distance of a smoke exhaust fan, personnel evacuation ways and the like.
Further, the shooting system 4 includes at least one camera, and the camera may be a high-speed camera or a common camera, and is selected according to actual conditions. At tracer system 3 to the roughly the same time point of injection tracer flue gas in the tunnel model 1, start shooting system 4, shoot in succession, shoot the position change of tracer flue gas for the flow law of burning flue gas in the analysis tunnel model 1.
In short, according to the tunnel fire smoke movement measurement simulation test system 100 provided by the embodiment of the invention, in the tunnel model 1 which is reduced in equal proportion according to the actual tunnel, the combustion smoke is released through combustion of the fire source system 2, the situation of the tunnel fire is simulated, the temperature-controllable tracer smoke is sprayed to the interior of the tunnel model 1 by using the tracer system 3 to follow the combustion smoke, the flow trajectory of the tracer smoke is shot by using the shooting system 4, and the flow rule of the combustion smoke is further obtained. Temperature-controllable tracer flue gas real-time measurement is the flue gas temperature change in the region that awaits measuring, makes tracer flue gas and flue gas density around keep unanimous basically for tracer flue gas's follower nature is strong, has improved tunnel fire flue gas motion measurement analogue test's accuracy, simultaneously, dyes the tracer flue gas, makes the eye colour be different from the flue gas in the tunnel model around, makes the tracer flue gas be convenient for observe, has strengthened tunnel fire flue gas motion measurement analogue test's accuracy.
In some embodiments of the present invention, as shown in fig. 1, the tracer system 3 is movably disposed inside the tunnel model 1, that is, the tracer system 3 can freely move in the research area inside the tunnel model 1, and supplies tracer flue gas in real time, so as to ensure that the tracer flue gas has a certain proportion, avoid being rapidly diluted, and ensure that the shooting effect can accurately reflect the fluid form of the combustion flue gas. Correspondingly, shooting system 4 is movably set up inside tunnel model 1, follows the tracer flue gas and removes, shoots the motion trail of tracer flue gas more rapidly and more clearly, has solved fixed camera system and has shot the not wide enough of scope, the unclear problem of remote shooting effect.
In a further embodiment, transverse rails 51 extending in the axial direction are provided in the tunnel model 1, and the tracer system 3 is movable in the axial direction along the transverse rails 51. In particular, the tracer system 3 can be moved along any axis inside the tunnel model 1 from the first exit to the second exit of the tunnel model 1 or from the second exit to the first exit. Meanwhile, a longitudinal guide rail 52 extending in the vertical direction is further arranged in the tunnel model 1, and the tracer system 3 can move in the vertical direction along the longitudinal guide rail 52. In particular, on a section inside the tunnel model 1, the tracer system 3 can be moved in the vertical direction from the bottom to the top or from the top to the bottom of the inner space of the tunnel model 1.
Preferably, the transverse guide rails 51 and the longitudinal guide rails 52 are connected with a driving system 5, the driving system 5 may comprise a horizontal stepping motor and a vertical stepping motor, the horizontal stepping motor controls the tracer system 3 to move transversely along the transverse guide rails 51, and the vertical stepping motor controls the tracer system 3 to move longitudinally along the longitudinal guide rails, that is, the longitudinal guide rails 52 can move transversely along the transverse guide rails 51, and the transverse guide rails 51 can move longitudinally along the longitudinal guide rails 52. Wherein, the driving system 5 is connected with the tracing system 3, and the shooting system 4 is connected with the driving system 5.
That is, through transverse guide 51 and longitudinal rail 52 cooperation, tracer system 3 can adjust the inside suitable position of tunnel model 1 according to actual need, sprays the tracer flue gas in the inside a plurality of positions of tunnel model 1, makes the tracer flue gas flow along with the flue gas of tunnel model 1 interior different positions department, has enlarged tunnel fire flue gas motion measurement analogue test's detection range to the at utmost. It will be appreciated that the density and height of the combustion fumes produced by the combustion power of different powers are different, and therefore the mobility of the tracer system 3 in the horizontal and vertical directions ensures that the different forms of combustion fumes are accurately photographed.
In some embodiments of the invention, the tracer system 3 further comprises a fume-generating device 32, a dyeing device 33 and a nozzle 34 connected in series. The smoke generating device 32 is used for generating common white smoke, the white smoke passes through the dyeing device 33 to form tracing smoke with special colors, and the special colors need to be guaranteed to have obvious discrimination with colors of burning smoke in the tunnel. For example, the dyeing device 33 may be a red dyeing device 33 to enhance the distinction between the tracer flue gas and the combustion flue gas in the tunnel model 1. Further, the tracer gas formed by the dyeing device 33 is transmitted to the nozzle 34, and is injected into the interior of the tunnel model 1 through the nozzle 34.
It will be appreciated that the combustion fumes are grey and the tracer fumes are of a particular colour, which can be clearly distinguished. At the in-process that the tracer flue gas flows along with the burning flue gas, just can see the flow path of tracer flue gas directly perceivedly through eyes, just can clearly note the flow path of tracer flue gas through the shooting system, further the flow law of analysis burning flue gas improves tunnel fire flue gas motion measurement analogue test's accuracy.
Furthermore, the nozzle 34 is provided with an adjustable position opening. Through changing open-ended direction, can adjust the angle of blowout spike flue gas, make the blowout spike flue gas keep certain shape, can not dissipate fast, further strengthened the followability of spike flue gas to the burning flue gas. Meanwhile, the method is beneficial to continuous detection of tunnel fire smoke motion measurement simulation tests.
In some embodiments of the present invention, the temperature control device 31 is connected to a thermocouple 311, and the thermocouple 311 serves as a temperature measuring element to directly measure the ambient temperature and transmit a temperature signal to the connected temperature control device 31. The temperature control device 31 receives and processes the temperature signal, and controls the temperature of the sprayed tracer smoke to approach the temperature around the thermocouple 311. Further, a thermocouple 311 is provided in the vicinity of the nozzle 34, i.e., the thermocouple 311 is used to measure the temperature in the vicinity of the nozzle 34. Before the tracer smoke is sprayed into the tunnel model 1, the tracer system 3 is moved to the area where the measurement is planned through the transverse guide rails 51 and the longitudinal guide rails 52. At this time, the nozzle 34 is also moved to the area where the measurement is planned, and the vicinity of the nozzle 34 is the combustion fumes of the area to be measured.
That is, thermocouple 311 is used for measuring the temperature of the burning flue gas of waiting to detect the region, and temperature control device 31 adjusts the temperature of spike flue gas through the testing data, and then controls the density of spike flue gas, strengthens the followability of spike flue gas to the burning flue gas.
Preferably, the camera system 4 is connected at a distance to the tracer system 3, and the camera of the camera system 4 is parallel to the opening of the nozzle 34. When the tracer system 3 is moved to different positions inside the tunnel model 1 by the transverse guide 51 and the longitudinal guide 52, the camera system 4 also moves following the tracer system 3 and always keeps the camera 41 parallel to the opening of the nozzle 34. After tracer system 3 sprays the tracer flue gas to tunnel model 1 inside, because the camera is parallel with the opening of the nozzle 34 of release tracer flue gas, interval between them is less simultaneously, and the position of tracer flue gas can be shot fast and clearly to the camera, improves the accuracy of detection data.
In some embodiments of the present invention, the fire source system 2 includes a fuel supply system 22 and a combustion pond 21 connected to each other, the combustion pond 21 is located at a lower portion of an inner space of the tunnel model 1, the fuel supply system 22 is located outside the tunnel model 1, and the fuel supply system 22 and the combustion pond 21 are connected by a pipe. The fuel supply system 22 is arranged outside the tunnel model 1, so that the risks of test failure and personnel injury caused by leakage or explosion of the fuel supply system 22 in a tunnel fire smoke motion measurement simulation test are effectively avoided, and the safety of the tunnel fire smoke motion measurement simulation test is greatly enhanced.
In a preferred embodiment of the invention, at least one wall of the tunnel model 1 is provided with a transparent window, and a plurality of support structures 11 are provided at the bottom of the tunnel model 1. Wherein at least one of the front wall surface, the rear wall surface and the upper wall surface of the tunnel model 1 is provided with a transparent window. Usually all set up transparent window at two walls, be convenient for observe the position of spike flue gas among the tunnel fire flue gas motion measurement analogue test on the one hand, on the other hand, transparent window can the printing opacity, and good light can improve the shooting effect of shooting system 4. The number of the support structures 11 is two or more, and as shown in fig. 1, the support structures 11 may be respectively disposed at four corners of the bottom of the tunnel model 1. The support structure 11 is generally a solid cylinder to maintain the stability of the tunnel model 1, and the support structure 11 may also be a pulley with a supporting capability for moving the tunnel model 1, so as to facilitate the replacement of the test site.
In one embodiment of the present invention, the tunnel fire smoke motion measurement simulation test system 100 includes all of the features of the above-described embodiments.
Specifically, the tunnel fire smoke movement measurement simulation test system 100 includes: the tunnel model 1, the fire source system 2, the tracer system 3, the camera system 4 and the drive system 5.
The tunnel model 1 is constructed in a scaling-down mode according to the actual tunnel size, the accuracy of a simulation test is improved, meanwhile, the transverse guide rail 51, the longitudinal guide rail 52 and the driving system 5 connected with the two guide rails are arranged inside the tunnel model 1, and transparent windows are arranged on the front wall face, the rear wall face and the upper wall face of the tunnel model 1, so that the test process can be observed conveniently.
The fire source system 2 is composed of a combustion pool 21 and a fuel supply system 22, the combustion pool 21 is arranged on the bottom surface inside the tunnel model 1, the fuel supply system 22 is arranged outside the tunnel model 1, the explosion risk of the fuel supply system 22 in the test process is avoided, the combustion pool 21 is supplied with fuel by the fuel supply system 22 through pipeline connection, and smoke required by the simulation test is released through combustion.
The tracer system 3 is arranged on the transverse guide rail 51 and the longitudinal guide rail 52, the tracer system 3 can move along with the transverse guide rail 51 and the longitudinal guide rail 52 through the driving of the driving system 5, tracer smoke is sprayed at different positions of an internal space defined by the tunnel model 1, and the detection range of the tunnel fire smoke motion measurement simulation test is enlarged to the greatest extent. Further, the tracer system 3 is provided with a smoke generating device 32, a dyeing device 33, a nozzle 34, a temperature control device 31 and a thermocouple 311 for measuring temperature, which are connected in sequence, wherein the smoke generating device 32 is used for generating white smoke, the white smoke passes through the dyeing device 33 to form tracer smoke with a special color, and finally the tracer smoke is sprayed into the tunnel model 1 through the nozzle 34. The nozzle 34 can adjust the angle that the tracer flue gas got into tunnel model 1, makes the tracer flue gas be difficult to dissipate, and temperature control device 31 can detect the temperature of burning flue gas through thermocouple 311 to the temperature of control tracer flue gas is close to the temperature of burning flue gas, makes it have good followability to burning flue gas, improves analogue test's accuracy.
The shooting system 4 comprises a high-speed camera, the high-speed camera is also arranged on the transverse guide rail 51 and the longitudinal guide rail 52, and the openings of the high-speed camera and the nozzle 34 are arranged at short intervals in the parallel direction, so that the position of the trace smoke can be shot quickly and clearly, and the accuracy of detection data is improved.
The operation process of the tunnel fire smoke movement measurement simulation test system 100 of the above embodiment is substantially as follows: firstly, the fuel in the fuel supply system 22 is conveyed to the combustion pool 21 in the tunnel model 1 through a pipeline to be combusted to generate grey combustion flue gas; then, selecting a region to be measured in the tunnel model 1, and moving the tracing system 3 and the shooting system 4 to the region to be measured through the driving system 5; then, the thermocouple 311 detects the temperature of the surrounding combustion flue gas and transmits the temperature to the temperature control device 31, meanwhile, the white flue gas generated by the flue gas generation device 32 flows to the dyeing device 33 to form red tracer flue gas, the temperature control device 31 adjusts the temperature of the tracer flue gas to enable the temperature of the tracer flue gas to be close to the temperature of the combustion flue gas, and the nozzle 34 adjusts the opening direction to spray the tracer flue gas to the area to be detected; and then, the shooting system 4 is started while the tracer smoke is sprayed, and continuously shoots the positions of the tracer smoke to obtain the motion law of the tracer smoke. Furthermore, the flow rule of the combustion flue gas is obtained through tracing the flow rule of the flue gas, and the distribution of the flue gas flow field in the tunnel when a tunnel fire disaster occurs is deduced through calculation and analysis, so that tunnel managers are helped to reasonably design smoke exhaust ports and reasonably formulate a smoke prevention and exhaust scheme of the tunnel fire disaster.
It should be noted that, the working process of the tunnel fire smoke movement measurement simulation test system is only illustrative, and is not a limitation to the scope of the present invention.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
In the description of the present invention, it is to be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be considered as limiting.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. The utility model provides a tunnel fire flue gas motion measurement analogue test system which characterized in that includes:
the device comprises a tunnel model, a first valve and a second valve, wherein a first outlet is arranged at one axial end of the tunnel model, and a second outlet is arranged at the other axial end of the tunnel model;
the fire source system is used for directly releasing smoke generated by combustion of the fire source system into the tunnel model;
the tracing system is arranged in the tunnel model so as to spray colored flue gas, namely traced flue gas, into the tunnel model, and is provided with a temperature control device which collects the temperature of the combustion flue gas and adjusts the temperature of the traced flue gas according to the temperature of the combustion flue gas;
and the shooting system is arranged in the tunnel model and is used for shooting the position change of the tracer smoke.
2. The tunnel fire smoke motion measurement simulation test system of claim 1, wherein the tracer system is movably disposed within the tunnel model and continuously injects tracer smoke into the tunnel, and correspondingly, the camera system is movably disposed within the tunnel model.
3. The tunnel fire smoke motion measurement simulation test system of claim 2, wherein a transverse guide rail extending in an axial direction is arranged in the tunnel model, and the tracing system can move in the axial direction along the transverse guide rail.
4. The tunnel fire smoke motion measurement simulation test system of claim 3, wherein a longitudinal rail extending in a vertical direction is provided in the tunnel model, and the tracer system is movable in the vertical direction along the longitudinal rail.
5. The tunnel fire smoke motion measurement simulation test system of claim 1, wherein the tracer system comprises a smoke generating device, a dyeing device and a nozzle which are connected in sequence, smoke generated by the smoke generating device forms tracer smoke after being dyed by the dyeing device, and the tracer smoke is sprayed into the tunnel model through the nozzle.
6. The tunnel fire smoke motion measurement simulation test system of claim 5, wherein the opening position of the nozzle is adjustable.
7. The tunnel fire smoke motion measurement simulation test system of claim 5, wherein the temperature control device is connected to a thermocouple, the thermocouple being disposed adjacent to the nozzle.
8. The tunnel fire smoke motion measurement simulation test system of claim 5, wherein a camera of the shooting system is parallel to an opening of the nozzle.
9. The tunnel fire smoke motion measurement simulation test system of claim 1, wherein the fire source system comprises a fuel supply system and a combustion cell connected to each other, the combustion cell being located within the tunnel model.
10. The tunnel fire smoke motion measurement simulation test system of claim 1, wherein at least one wall of the tunnel model is provided with a transparent window, and a plurality of support structures are provided at the bottom of the tunnel model.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011460717.6A CN112581848A (en) | 2020-12-11 | 2020-12-11 | Tunnel fire smoke motion measurement simulation test system |
Applications Claiming Priority (1)
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