CN113781887B - Fire inversion simulation analysis system based on container type cable tunnel - Google Patents
Fire inversion simulation analysis system based on container type cable tunnel Download PDFInfo
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Abstract
The application discloses fire inversion simulation analysis system based on container type cable tunnel, including container type cable tunnel construction module, environment detection terminal sets up the module, the module is laid to the removal combustor place, place a fire inversion simulation monitoring module, analysis cloud platform and backstage display terminal, through using the container to construct cable tunnel fire inversion simulation platform as the framework, and lay a plurality of places and a plurality of check points in container inner space before fire inversion simulation test, set up the burning classification and the burning duration of fire inversion simultaneously, carry out the fire inversion simulation experiment of each burning classification with this respectively at each place, obtain the comprehensive fire environment diffusion danger coefficient of each place under each burning classification, the quantitative show of the environment diffusion danger degree of the fire condition that takes place in container inner space optional position has been realized, provide reliable reference basis for the fire rescue of fire fighter carrying out cable tunnel.
Description
Technical Field
The invention belongs to the technical field of fire inversion simulation management, and particularly relates to a fire inversion simulation analysis system based on a container type cable tunnel.
Background
Along with the development of power technology and the improvement of the living standard of people's residents for power consumption demand and power consumption quality demand constantly rise, and then have proposed the higher requirement of transmission stability to power transmission, and traditional aerial cable transmission mode is because of receiving external environment to influence great, leads to more and more not matching with the requirement that present power transmission proposed. Under the condition, a cable tunnel power transmission mode is generated, the cable tunnel power transmission mode is used for power transmission by laying cables in the cable tunnel, and the cable tunnel has the characteristics of large capacity and no influence of external environment, so that the application of the cable tunnel power transmission mode is wider and wider. However, as the air circulation in the cable tunnel is poor, the moisture is high, and the number of flammable cables such as optical fiber communication cables is large, fire accidents caused by local ignition are easy to happen in the tunnel.
When a fire disaster occurs in the cable tunnel, if the fire is not extinguished as soon as possible, light people can cause economic loss of the burnt cable, and heavy people can cause the breakdown of the power transmission system, so that normal production and domestic power consumption of people are affected, and further immeasurable loss is brought to social development and people's life. Consequently when the cable tunnel conflagration breaks out, need the fire fighter to get into the tunnel as early as possible and expand the work of putting out a fire, but because the structure in tunnel is long and narrow enclosure space, only has two exports in both ends, the fire fighter can't real time monitoring to the fire behavior temperature distribution condition in the tunnel, can produce a large amount of poison gas poison cigarette and spread to tunnel longitudinal direction rapidly during cable burning in the tunnel simultaneously, the fire fighter also can't learn the diffusion condition of poison gas poison cigarette in the tunnel. In such a situation, there is a substantial risk that fire fighters will be reluctant to enter to extinguish the fire.
Therefore, if a tunnel fire test can be carried out, the diffusion condition of toxic gas and toxic smoke in the tunnel is known in advance, and great guiding significance is provided for fire extinguishing and rescue of fire fighters. However, if the fire experiment research is carried out by using a full-size real tunnel, a large amount of manpower, material resources and financial resources are required, the method is obviously not feasible, and therefore, a cable tunnel fire inversion simulation platform is very necessary to construct for fire inversion simulation monitoring.
Disclosure of Invention
In order to achieve the above purpose, the following technical solutions are proposed in the present application:
the application discloses fire inversion simulation analysis system based on container formula cable tunnel includes: the system comprises a container type cable tunnel construction module, an environment detection terminal setting module, a mobile burner placing point laying module, a placing point fire inversion simulation monitoring module, an analysis cloud platform and a background display terminal;
the container type cable tunnel construction module is used for acquiring size parameters of a cable tunnel, scaling the size parameters of the cable tunnel according to a preset proportion, acquiring target size parameters, and constructing the container type cable tunnel according to the target size parameters;
the environment detection terminal setting module is used for uniformly distributing detection points on the inner wall of the container type cable tunnel, numbering the detection points, respectively placing environment detection terminals on the detection points and acquiring environment parameters of the detection points;
the movable combustor placing point laying module is used for obtaining a central axis in the container type cable tunnel, dividing the central axis at equal intervals and obtaining a plurality of axial placing points; the axial placement points are used for numbering the axial placement points according to the sequence from the front side surface to the rear side surface of the container type cable tunnel; the device is used for taking each axial placement point as a central point, making a plane parallel to the front side surface of the container type cable tunnel and acquiring a plane corresponding to each axial placement point; the device comprises a plurality of axial placement points, a plurality of positioning units and a control unit, wherein the axial placement points are used as a center circumference, a plurality of circumferential placement points are arranged on a plane corresponding to each axial placement point, and the plurality of circumferential placement points corresponding to each axial placement point are obtained; and a plurality of circumferential placement point numbers corresponding to each axial placement point;
the placed ignition condition inversion simulation monitoring module comprises a placed ignition condition inversion test sequence setting module, a mobile burner combustion parameter setting module and a placed ignition condition inversion simulation test module;
the placed ignition condition inversion simulation detection module is used for setting the ignition condition inversion test sequence of each axial placed point and each circumferential placed point, setting the combustion type and carrying out the ignition condition inversion simulation test on each axial placed point and each circumferential placed point by using a mobile combustor; the device is used for acquiring environmental parameters of all the axial placement points and all the circumferential placement points at all detection points under different combustion types;
the analysis cloud platform is used for acquiring comprehensive fire diffusion coefficients of the plurality of axially placed points under different combustion categories and acquiring comprehensive fire diffusion coefficients of the circumferentially placed points corresponding to the axially placed points under different combustion categories;
the background display terminal is used for displaying the environmental parameters of the detection points, displaying the comprehensive fire condition diffusion coefficients of the plurality of axially placed points under different combustion categories, and displaying the comprehensive fire condition diffusion coefficients of the circumferentially placed points corresponding to the axially placed points under different combustion categories.
Optionally, the size parameters of the cable tunnel include length, width and height of the cable tunnel.
Optionally, the inner walls of the container type cable tunnel include a left side wall, a right side wall, a top wall and a bottom wall.
Optionally, the environment detection terminal comprises a temperature sensor, a carbon monoxide sensor, a smoke concentration sensor, a hydrogen chloride sensor and a PM10 dust monitor; the environmental parameters of the detection points comprise: temperature, carbon monoxide concentration, smoke concentration, hydrogen chloride concentration, and PM10 concentration at each detection point.
Optionally, the placed fire inversion test sequence setting module is configured to set a fire inversion simulation test sequence of each axially placed point according to the serial numbers of the plurality of axially placed points; and the fire inversion simulation test sequence of each circumferential placing point corresponding to each axial placing point is set according to the serial numbers of the plurality of circumferential placing points corresponding to each axial placing point.
Optionally, the combustion parameter setting module of the mobile combustor is configured to set combustion categories and combustion durations of the mobile combustor, where the combustion categories include 3, and each combustion category corresponds to one cable combustion fire source; and for the combustion class number A, B, C.
Optionally, the ignition inversion simulation test module is configured to perform the following steps:
s1, sequentially moving a movable combustor to each axially placed point according to the fire inversion simulation test sequence of each axially placed point, and sequentially igniting combustion fire sources corresponding to each combustion type at each axially placed point to the movable combustor according to the sequencing sequence of the combustion types, so that each axially placed point sequentially presents flames corresponding to each combustion type to form a fire;
s2, dividing the set combustion duration according to a preset time interval, and numbering each divided combustion time point according to a time sequence;
s3, collecting the environmental parameters of the axial placement points at each detection point under each combustion category at each combustion time point;
s4, after the fire inversion simulation test corresponding to each axial placing point is finished, sequentially moving the movable combustor to each circumferential placing point corresponding to each axial placing point according to the fire inversion simulation test sequence corresponding to each circumferential placing point of each axial placing point, and forming a fire at each circumferential placing point corresponding to each axial placing point according to the method in the step S1;
and S5, collecting the environmental parameters of the circumferential placement points corresponding to the axial placement points at each combustion type at each combustion time point.
Optionally, the acquiring the comprehensive fire diffusion coefficient of the plurality of axially-placed points under different combustion categories includes the following steps:
h1, forming an environment parameter set G of each axial placement point in the A combustion category by the environment parameters of each detection point in each combustion time point in the A combustion category w iAa (g w iAa 1，g w iAa 2，...，g w iAa t，...，g w iAa k)，g w iAa t is a numerical value corresponding to the environmental parameter of the ith axially placed point at the tth combustion time point of the a-th detection point in the A-th combustion category, w is an environmental parameter, w = r1, r2, r3, r4 and r5 are respectively represented as temperature, carbon monoxide concentration, smoke concentration, hydrogen chloride concentration and PM10 concentration;
h2: comparing the environmental parameters of the axial placement points at the detection points in the environmental parameter set under the A-th combustion category to obtain an environmental parameter adjacent combustion time point comparison set delta G under the A-th combustion category w iAa [Δg w iAa 1，Δg w iAa 2，...，Δg w iAa (t-1)，...，Δg w iAa (k-1)]，Δg w iAa (t-1) is expressed as a comparison difference between the environmental parameter of the ith axially placed point at the tth combustion time point at the ith detection point under the A combustion category and the environmental parameter of the t-1 th combustion time point, so that the diffusion degree value of each environmental parameter corresponding to each detection point under the A combustion category of each axially placed point is counted according to the comparison set of the adjacent combustion time points of each axially placed point under the A combustion category and the adjacent combustion time points of each axially placed point under the A combustion category
w＝r1，r2，r3，r4，r5，η w iA a is expressed as the diffusion degree value of each environmental parameter corresponding to the ith detection point of the ith axially placed point under the A combustion type, and T is expressed as the set combustion time;
h3: evaluating the comprehensive fire environment diffusion danger coefficient of each axial placement point in the A combustion category according to the diffusion degree value of each environmental parameter corresponding to each detection point of each axial placement point in the A combustion category
ξ iA Expressed as the diffusion risk coefficient of the comprehensive fire environment of the ith axially placed point under the A combustion category, and alpha 1, alpha 2, alpha 3, alpha 4 and alpha 5 are respectively expressed as temperature, carbon monoxide concentration, smoke concentration, hydrogen chloride concentration and PM10 concentrationA corresponding diffusion risk weight value;
h4: processing according to the method of the steps H1-H3, and evaluating the comprehensive fire environment diffusion risk coefficient of each axial placement point under the B-th combustion category, and recording as zeta iB ；
H5: processing according to the method of the steps H1-H3, evaluating the comprehensive fire environment diffusion danger coefficient of each axial placement point under the C combustion category, and recording as xi iC 。
Optionally, the acquiring of the comprehensive fire diffusion coefficient corresponding to each circumferential placement point corresponding to each axial placement point under different combustion categories includes the following steps:
d1: according to the method of the step H1, the environmental parameters of all the axial placement points, corresponding to all the circumferential placement points, at all the combustion time points under the A combustion type form an environmental parameter set of all the axial placement points, corresponding to all the circumferential placement points, under the A combustion type;
d2: processing according to the method of the step H2, counting diffusion degree values of each detection point corresponding to each circumferential placing point under the A-th combustion category corresponding to each environmental parameter corresponding to each axial placing point, and recording as sigma w ijA a；
D3: processing according to the method of the step H3, and evaluating the comprehensive fire environment diffusion danger coefficients of the axial placement points and the circumferential placement points under the A-th combustion category, and recording the comprehensive fire environment diffusion danger coefficients as
D4: processing according to the method of the steps D1-D3, evaluating the comprehensive fire environment diffusion danger coefficients of the circumferential placement points corresponding to the axial placement points under the B-th combustion category, and recording the comprehensive fire environment diffusion danger coefficients as
D5: processing according to the method of the steps D1-D3, evaluating the comprehensive fire environment diffusion danger coefficients of the circumferential placement points corresponding to the axial placement points under the C-th combustion category, and recording the comprehensive fire environment diffusion danger coefficients as
Optionally, the analysis cloud platform further sequences the environmental parameters of the detection points of the axial placement points in different combustion categories in the order of diffusion degree values from large to small, obtains a sequencing result of the diffusion degree of the environmental parameters of the detection points of the axial placement points in different combustion categories, processes the environmental parameters corresponding to the detection points of the circumferential placement points in different combustion categories according to the method, obtains a sequencing result of the diffusion degree of the environmental parameters corresponding to the circumferential placement points in different combustion categories, and sends the sequencing result to the background display terminal for background display.
The invention has the following beneficial effects:
the cable tunnel fire inversion simulation platform is constructed by taking the container as a framework in the process of constructing the cable tunnel fire inversion simulation platform, the construction mode is low in construction cost and convenient to move and install, and compared with the mode of adopting a reduced-size tunnel model as the cable tunnel fire inversion simulation platform, the construction mode is more flexible and convenient to construct and has the characteristic of strong practicability.
When the container type cable tunnel is adopted to carry out fire inversion simulation tests, a plurality of placing points are distributed in the inner space of the container, and meanwhile, the detecting points are uniformly arranged on the inner wall of the inner space of the container, so that the fire inversion simulation tests are respectively carried out on the placing points, the comprehensive fire environment diffusion danger coefficients corresponding to the placing points are obtained, the quantitative display of the environment diffusion danger degree of fire at any position of the inner space of the container is realized, and the reliable reference basis is provided for firemen to carry out fire rescue of the cable tunnel.
In the process of arranging the placing points in the inner space of the container, the axial placing points and the circumferential placing points corresponding to the axial placing points are arranged, so that on one hand, a fireman can compare comprehensive fire environment diffusion danger coefficients corresponding to the axial placing points with each other to extract an environmental parameter diffusion rule of a fire condition in the container in the axial direction, on the other hand, the fireman can compare the comprehensive fire environment diffusion danger coefficients corresponding to the axial placing points with each circumferential placing point with each other to extract the environmental parameter diffusion rule of the fire condition circumferentially on the plane of each axial placing point in the container, and regular rescue guidance is provided for the fireman to rescue the cable tunnel fire.
According to the invention, before the fire inversion simulation test is carried out on each placement point in the container, the combustion type of the fire inversion is set, so that the fire inversion simulation test of each combustion type is realized at each placement point, the fire inversion simulation test of the fire inversion is enriched, and compared with the fire inversion simulation test carried out by adopting a single fire, the fire inversion simulation test of each combustion type at each placement point can provide a rescue reference basis of multiple fires for a fireman to carry out cable tunnel fire rescue subsequently.
Drawings
In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a container-based fire inversion simulation analysis system disclosed in an embodiment of the present application;
fig. 2 is a schematic view of a container type cable tunnel structure disclosed in an embodiment of the present application;
fig. 3 is a schematic structural diagram of an inversion simulation monitoring module for placing an ignition situation disclosed in an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring to fig. 1, a fire inversion simulation analysis system based on container formula cable tunnel, including container formula cable tunnel structure module, environment detection terminal sets up the module, the module is laid to the mobile burner point of placing, place the ignition inversion simulation monitoring module, analysis cloud platform and backstage display terminal, wherein container formula cable tunnel structure module is laid the module with environment detection terminal sets up the module respectively and mobile burner places the point and is connected, the module is laid to the mobile burner point of placing and is connected with placing the ignition inversion simulation monitoring module, it is connected with analysis cloud platform to place the ignition inversion simulation monitoring module, analysis cloud platform is connected with backstage display terminal.
The container type cable tunnel construction module is used for obtaining size parameters of a cable tunnel, scaling the size parameters of the cable tunnel according to a preset proportion, obtaining target size parameters and constructing the container type cable tunnel according to the target size parameters; the dimensional parameters of the cable tunnel include the length, width and height of the cable tunnel. The length, width, and height of the cable tunnel are scaled to appropriate sizes to construct a container-type cable tunnel, the inner walls of which include a left side wall, a right side wall, a top wall, and a bottom wall, as shown in fig. 2. When the cable tunnel is not sized, the container type cable tunnel is constructed with a 20-foot container.
This embodiment uses the container to construct cable tunnel fire inversion simulation platform as the framework at the construction cable tunnel fire inversion simulation platform in-process, and cable tunnel's inner space seals, can't observe inside fire after the conflagration breaing out, and the construction mode construction cost in this application is low, and is convenient for remove and install, compares and adopts reduced size tunnel model as cable tunnel fire inversion simulation platform, and this kind of construction mode structure is more nimble, convenient, has the characteristics that the practicality is strong.
This embodiment all adopts thermal-insulated and heat preservation facility in the both sides wall and the bottom of the container formula cable tunnel of structure for the emergence scope that makes the condition of a fire is injectd inside the container, avoids the intensity of a fire to stretch away, and this application can cooperate quick extinguishing device, and the condition of a fire in time finishes after the assurance test, avoids taking place danger.
The environment detection terminal setting module is used for uniformly distributing detection points on the inner wall of the container type cable tunnel, numbering the detection points, marking the detection points as 1,2, a, x, respectively, placing an environment detection terminal at each detection point, and acquiring environment parameters of each detection point; the environment detection terminal comprises a temperature sensor, a carbon monoxide sensor, a smoke concentration sensor, a hydrogen chloride sensor and a PM10 dust monitor. The environmental parameters of the detection points comprise: temperature, carbon monoxide concentration, smoke concentration, hydrogen chloride concentration, and PM10 concentration at each detection point.
The reason why the temperature, the carbon monoxide concentration, the smoke concentration, the hydrogen chloride concentration and the PM10 concentration are selected as the fire inversion environmental parameters in the embodiment is that the environmental parameters all affect the rescue risk of fire fighters and are key factors influencing rescue.
The embodiment is through evenly laying the check point on the inner wall at container inner space for environmental parameter when container inner space homoenergetic was gathered the fire and is inverted provides convenience for the follow-up diffusion degree analysis that carries out each check point and correspond each environmental parameter.
The mobile burner placing point laying module is used for obtaining a central axis in the container type cable tunnel, dividing the central axis at equal intervals and obtaining a plurality of axial placing points; and a controller for numbering the plurality of axially placed points according to a sequence from a front side to a rear side of the container type cable tunnel, labeled 1,2, · i, · n, respectively; the device is used for taking each axial placement point as a central point, making a plane parallel to the front side surface of the container type cable tunnel and acquiring a plane corresponding to each axial placement point; the device comprises a plurality of axial placement points, a plurality of positioning units and a control unit, wherein the axial placement points are used as a center circumference, a plurality of circumferential placement points are arranged on a plane corresponding to each axial placement point, and the plurality of circumferential placement points corresponding to each axial placement point are obtained; and a plurality of circumferential placement point numbers for each axial placement point, respectively labeled 1,2, ·, j, ·, m.
In the process of arranging the placing points in the inner space of the container, the embodiment has the advantages that the axial placing points and the circumferential placing points corresponding to the axial placing points are evenly arranged according to the characteristics of the cable tunnel in a planning way, so that the reliability of the test is greatly enhanced,
this application on the one hand is convenient for the fire fighter to carry out the mutual contrast with the corresponding comprehensive condition of a fire environment diffusion danger coefficient of each axial placement point, from the environmental parameter diffusion law that the condition of a fire takes place for axial direction in the extraction container, on the other hand is convenient for the fire fighter to correspond corresponding comprehensive condition of a fire environment diffusion danger coefficient of each circumferential placement point with same axial placement point and carry out the mutual contrast, from the extraction container in the environmental parameter diffusion law that the condition of a fire takes place for each axial placement point circumference on the plane, provide the rescue of regularity and guide for the fire fighter carries out the conflagration rescue in cable tunnel.
Referring to fig. 3, the placed ignition condition inversion simulation monitoring module comprises a placed ignition condition inversion test sequence setting module, a mobile burner combustion parameter setting module and a placed ignition condition inversion simulation test module;
the placed fire condition inversion test sequence setting module is used for setting a fire condition inversion simulation test sequence of each axial placed point according to the serial numbers of the plurality of axial placed points; and the fire inversion simulation test sequence of each circumferential placing point corresponding to each axial placing point is set according to the serial numbers of the plurality of circumferential placing points corresponding to each axial placing point.
The mobile burner combustion parameter setting module is used for setting combustion types and combustion duration of the mobile burner, the number of the combustion types is 3, and each combustion type corresponds to one cable combustion fire source; and for numbering the combustion class A, B, C. The setting of the combustion duration is used for setting the combustion duration of each time of the movable burner, and the combustion durations corresponding to the combustion categories at the placing points are kept consistent.
The put ignition inversion simulation test module is used for executing the following steps:
s1, sequentially moving the mobile burner to each axial placement point according to a fire inversion simulation test sequence of each axial placement point, and sequentially igniting combustion fire sources corresponding to each combustion type at each axial placement point to the mobile burner according to a sequencing sequence of the combustion types, so that each axial placement point sequentially presents flames corresponding to each combustion type to form a fire;
s2, dividing the set burning duration according to a preset time interval, and numbering the divided burning time points according to the time sequence;
s3, collecting the environmental parameters of each axial placement point at each combustion type at each combustion time point;
s4, after the fire inversion simulation test corresponding to each axial placement point is finished, sequentially moving the movable burner to each circumferential placement point corresponding to each axial placement point according to the fire inversion simulation test sequence corresponding to each circumferential placement point of each axial placement point, and forming a fire at each circumferential placement point corresponding to each axial placement point according to the method of the step S1;
and S5, collecting the environmental parameters of the circumferential placement points corresponding to the axial placement points at each combustion type at each combustion time point.
The placed ignition condition inversion simulation detection module is used for setting the ignition condition inversion test sequence of each axial placed point and each circumferential placed point, setting the combustion type and carrying out the ignition condition inversion simulation test on each axial placed point and each circumferential placed point by using a mobile combustor; the device is used for acquiring environmental parameters of each axial placement point and each circumferential placement point at each detection point under different combustion types;
the reason why the mobile burner is adopted to replace the real cable combustion for carrying out the fire inversion simulation experiment in the embodiment is that the mobile burner is more convenient to operate than the real cable combustion, can be moved randomly for combustion, and can control the combustion duration.
This embodiment is before carrying out fire inversion analogue test to each place in the container, set up the burning classification of fire inversion to the fire inversion realizes the fire inversion analogue test of each burning classification at each place, the fire classification of fire inversion has been richened, the fire that adopts the unicity is compared and is carried out fire inversion analogue test, this mode of carrying out the fire inversion analogue test of each burning classification to each place can provide the rescue reference basis of many-sided conflagration for the fire fighter follow-up cable tunnel fire rescue that carries on.
In this embodiment, after the fire inversion simulation experiment for each combustion category is completed at each placement point, the subsequent experiment is performed after the ventilation and the exhaust of the flue gas generated inside the container are performed, so that the interference of the previous fire inversion simulation experiment result on the next fire inversion simulation experiment caused by the situation that the ventilation and the exhaust are not performed is avoided.
The method for acquiring the comprehensive fire diffusion coefficients of the plurality of axially placed points under different combustion categories comprises the following steps:
h1: the environmental parameters of all the axially placed points in the A-th combustion type at all the detection points at all the combustion time points form an environmental parameter set G of all the axially placed points in the A-th combustion type w iAa (g w iAa 1，g w iAa 2，...，g w iAa t，...，g w iAa k)，g w iAa t is a numerical value corresponding to the environmental parameter of the ith axially-placed point at the tth combustion time point of the ith detection point in the combustion category A, w is the environmental parameter, and w = r1, r2, r3, r4 and r5 are respectively expressed as temperature, carbon monoxide concentration, smoke concentration, hydrogen chloride concentration and PM10 concentration;
h2: comparing the environmental parameters of the axial placement points at the detection points in the environmental parameter set under the A combustion category to obtain an environmental parameter adjacent combustion time point comparison set delta G under the A combustion category w iAa [Δg w iAa 1，Δg w iAa 2，...，Δg w iAa (t-1)，...，Δg w iAa (k-1)]，Δg w iAa (t-1) at combustion A as the ith axially disposed pointThe comparison difference value between the environmental parameter of the ith detection point at the tth combustion time point and the environmental parameter of the t-1 th combustion time point under the category is calculated according to the comparison set of the adjacent combustion time points of the environmental parameters of the axial placement points under the A combustion category to calculate the diffusion degree value of each environmental parameter corresponding to each detection point of each axial placement point under the A combustion category
w＝r1，r2，r3，r4，r5，η w iA a is expressed as the diffusion degree value of each environmental parameter corresponding to the ith detection point of the ith axially placed point under the A combustion type, and T is expressed as the set combustion time;
h3: evaluating the comprehensive fire environment diffusion danger coefficient of each axial placement point under the A combustion category according to the diffusion degree value of each environment parameter corresponding to each detection point under the A combustion category of each axial placement point
ξ iA The diffusion danger coefficients of the comprehensive fire environment of the ith axially placed point under the A combustion category are represented, and alpha 1, alpha 2, alpha 3, alpha 4 and alpha 5 are respectively represented as diffusion danger weight values corresponding to temperature, carbon monoxide concentration, smoke concentration, hydrogen chloride concentration and PM10 concentration; and the values of alpha 1, alpha 2, alpha 3, alpha 4 and alpha 5 can be respectively 0.2, 0.3, 0.2, 0.1 and 0.2, wherein the larger the diffusion risk coefficient of the comprehensive fire environment is, the higher the diffusion risk degree of the comprehensive fire environment is;
h4: processing according to the method of the steps H1-H3, and evaluating the comprehensive fire environment diffusion risk coefficient of each axial placement point under the B-th combustion category, and recording as zeta iB ；
H5: processing according to the method of the steps H1-H3, and evaluating the comprehensive fire environment diffusion risk coefficient of each axial placement point under the C combustion category, and recording as zeta iC 。
The method for acquiring the comprehensive fire condition diffusion coefficients corresponding to the circumferential placement points corresponding to the axial placement points under different combustion categories comprises the following steps:
d1: according to the method of the step H1, the environmental parameters of all the axial placement points, corresponding to all the circumferential placement points, at all the combustion time points under the A combustion type form an environmental parameter set of all the axial placement points, corresponding to all the circumferential placement points, under the A combustion type;
d2: processing according to the method in the step H2, counting diffusion degree values of the environmental parameters corresponding to the detection points of the circumferential placement points under the A-th combustion category and corresponding to the axial placement points, and recording the diffusion degree values as sigma w ijA a；
D3: processing according to the method of the step H3, and evaluating the comprehensive fire environment diffusion danger coefficients of the axial placement points and the circumferential placement points under the A-th combustion category, and recording the comprehensive fire environment diffusion danger coefficients as
D4: processing according to the method of the steps D1-D3, evaluating the comprehensive fire environment diffusion danger coefficients of the circumferential placement points corresponding to the axial placement points under the B-th combustion category, and recording the comprehensive fire environment diffusion danger coefficients as
D5: processing according to the method of the steps D1-D3, evaluating the comprehensive fire environment diffusion danger coefficients of the circumferential placement points corresponding to the axial placement points under the C-th combustion category, and recording the comprehensive fire environment diffusion danger coefficients as
This embodiment is when carrying out the fire inversion analogue test to container formula cable tunnel, carries out the fire inversion analogue test respectively through each placement point at container inner space, obtains the corresponding comprehensive fire environment diffusion danger coefficient of each placement point, has realized that the environment diffusion danger degree's of the container inner space optional position condition emergence fire quantization show, provides reliable reference basis for the fire fighter carries out cable tunnel's fire rescue.
Meanwhile, the analysis cloud platform also sequences the environmental parameters corresponding to the detection points of the axial placement points in the A, B, C combustion type in the descending order of diffusion degree values to obtain an environmental parameter diffusion degree sequencing result of the detection points of the axial placement points in the A, B, C combustion type, and simultaneously processes the environmental parameters corresponding to the circumferential placement points in the A, B, C combustion type to obtain an environmental parameter diffusion degree sequencing result of the circumferential placement points in the A, B, C combustion type, so that the sequencing result is sent to a background display terminal.
In the embodiment, the environmental parameter diffusion degrees of the detection points of the placement points in the A, B, C combustion category are sequenced, so that fire fighters can know the environmental parameter with the maximum diffusion degree and the environmental parameter with the minimum diffusion degree corresponding to the detection points when the placement points in the container are in a fire, the diffusion distribution condition of the environmental parameters in the container is visually shown for the fire fighters, and then a rescue route reference basis is provided for real rescue in the later period.
The background display terminal is used for displaying background on the comprehensive fire environment diffusion danger coefficients corresponding to the axial placement points, the comprehensive fire environment diffusion danger coefficients corresponding to the circumferential placement points, the environment parameter diffusion degree sequencing results of the detection points of the axial placement points in the A, B, C combustion type and the environment parameter diffusion degree sequencing results of the detection points of the circumferential placement points corresponding to the axial placement points in the A, B, C combustion type, so that the internal condition of the container when a fire occurs is visually displayed, and how to rescue in the tunnel when the fire occurs is taken as a basis.
The foregoing is merely illustrative and explanatory of the present invention and various modifications, additions or substitutions may be made to the specific embodiments described by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.
The present application has been described in detail with reference to specific embodiments and illustrative examples, but the description is not intended to limit the application. Those skilled in the art will appreciate that various equivalent substitutions, modifications or improvements may be made to the embodiments and implementations thereof without departing from the spirit and scope of the present application, and are within the scope of the present application. The protection scope of this application is subject to the appended claims.
Claims (6)
1. The utility model provides a fire inversion simulation analysis system based on container formula cable tunnel which characterized in that includes: the system comprises a container type cable tunnel construction module, an environment detection terminal setting module, a mobile burner placing point laying module, a placing point fire inversion simulation monitoring module, an analysis cloud platform and a background display terminal;
the container type cable tunnel construction module is used for acquiring the size parameter of a target cable tunnel, scaling the size parameter of the target cable tunnel according to a preset proportion to acquire a target size parameter, and constructing a container type cable tunnel according to the target size parameter;
the environment detection terminal setting module is used for uniformly distributing detection points on the inner wall of the container type cable tunnel, numbering the detection points, respectively placing environment detection terminals on the detection points and acquiring environment parameters of the detection points;
the movable combustor placing point laying module is used for obtaining a central axis in the container type cable tunnel, dividing the central axis at equal intervals and obtaining a plurality of axial placing points; the axial placement points are used for numbering the axial placement points according to the sequence from the front side surface to the rear side surface of the container type cable tunnel; the device is used for taking each axial placement point as a central point, making a plane parallel to the front side surface of the container type cable tunnel and acquiring a plane corresponding to each axial placement point; the device comprises a plurality of axial placement points, a plurality of positioning units and a control unit, wherein the axial placement points are used as a center circumference, a plurality of circumferential placement points are arranged on a plane corresponding to each axial placement point, and the plurality of circumferential placement points corresponding to each axial placement point are obtained; and a plurality of circumferential placement point numbers corresponding to each axial placement point;
the placed ignition condition inversion simulation monitoring module comprises a placed ignition condition inversion test sequence setting module, a mobile burner combustion parameter setting module and a placed ignition condition inversion simulation test module;
the placed fire inversion simulation monitoring module is used for setting a fire inversion test sequence of each axial placed point and each circumferential placed point, setting a combustion type and performing a fire inversion simulation test on each axial placed point and each circumferential placed point by using a mobile combustor; the device is used for acquiring environmental parameters of all the axial placement points and all the circumferential placement points at all detection points under different combustion types;
the analysis cloud platform is used for acquiring comprehensive fire diffusion coefficients of the plurality of axially placed points under different combustion categories and acquiring comprehensive fire diffusion coefficients of the circumferentially placed points corresponding to the axially placed points under different combustion categories;
the background display terminal is used for displaying the environmental parameters of the detection points, displaying the comprehensive fire condition diffusion coefficients of the plurality of axially placed points under different combustion categories, and displaying the comprehensive fire condition diffusion coefficients corresponding to the circumferentially placed points corresponding to the axially placed points under different combustion categories;
the placed fire condition inversion test sequence setting module is used for setting a fire condition inversion simulation test sequence of each axial placed point according to the serial numbers of the plurality of axial placed points; the fire inversion simulation test sequence of each circumferential placement point corresponding to each axial placement point is set according to the serial numbers of the plurality of circumferential placement points corresponding to each axial placement point;
the mobile burner combustion parameter setting module is used for setting combustion types and combustion duration of the mobile burner, the number of the combustion types is 3, and each combustion type corresponds to one cable combustion fire source; and for numbering the combustion class A, B, C;
the put ignition inversion simulation test module is used for executing the following steps:
s1, sequentially moving the mobile burner to each axial placement point according to a fire inversion simulation test sequence of each axial placement point, and sequentially igniting combustion fire sources corresponding to each combustion type at each axial placement point to the mobile burner according to a sequencing sequence of the combustion types, so that each axial placement point sequentially presents flames corresponding to each combustion type to form a fire;
s2, dividing the set burning duration according to a preset time interval, and numbering the divided burning time points according to the time sequence;
s3, collecting the environmental parameters of each axial placement point at each combustion type at each combustion time point;
s4, after the fire inversion simulation test corresponding to each axial placement point is finished, sequentially moving the movable burner to each circumferential placement point corresponding to each axial placement point according to the fire inversion simulation test sequence corresponding to each circumferential placement point of each axial placement point, and forming a fire at each circumferential placement point corresponding to each axial placement point according to the method of the step S1;
s5, collecting the environmental parameters of the circumferential placement points corresponding to the axial placement points at each combustion type at each combustion time point;
the method for acquiring the comprehensive fire diffusion coefficients of the plurality of axially placed points under different combustion categories comprises the following steps:
h1, forming an environment parameter set G of each axial placement point in the A-th combustion type by using the environment parameters of each detection point in each combustion time point in the A-th combustion type w iAa (g w iAa 1,g w iAa 2,...,g w iAa t,...,g w iAa k),g w iAa t is a numerical value corresponding to the environmental parameter of the ith axially-placed point at the tth combustion time point of the ith detection point in the combustion category A, w is the environmental parameter, and w = r1, r2, r3, r4 and r5 are respectively expressed as temperature, carbon monoxide concentration, smoke concentration, hydrogen chloride concentration and PM10 concentration;
h2, carrying out adjacent combustion time point-to-point comparison on the environmental parameters of all the axially placed points in all the detection points in the environmental parameter set under the A-th combustion categoryObtaining an environmental parameter adjacent combustion time point comparison set delta G of each axial placement point under the A combustion category w iAa [△g w iAa 1,△g w iAa 2,...,△g w iAa (t-1),...,△g w iAa (k-1)]，△g w iAa (t-1) is expressed as a comparison difference between the environmental parameter of the ith axially placed point at the tth combustion time point at the ith detection point under the A combustion category and the environmental parameter of the t-1 th combustion time point, so that the diffusion degree value of each environmental parameter corresponding to each detection point under the A combustion category of each axially placed point is counted according to the comparison set of the adjacent combustion time points of each axially placed point under the A combustion category and the adjacent combustion time points of each axially placed point under the A combustion category
w＝r1,r2,r3,r4,r5，η w iA a is expressed as the diffusion degree value of each environmental parameter corresponding to the ith detection point of the ith axially placed point under the A combustion type, and T is expressed as the set combustion time;
h3, evaluating the comprehensive fire environment diffusion danger coefficient of each axial placement point in the A combustion category according to the diffusion degree value of each environmental parameter corresponding to each detection point of each axial placement point in the A combustion category
ξ iA The comprehensive fire environment diffusion danger coefficient of the ith axially placed point under the A combustion category is represented, and alpha 1, alpha 2, alpha 3, alpha 4 and alpha 5 are respectively represented as diffusion danger weight values corresponding to temperature, carbon monoxide concentration, smoke concentration, hydrogen chloride concentration and PM10 concentration;
h4, processing according to the method of the steps H1-H3, evaluating the comprehensive fire environment diffusion danger coefficient of each axial placing point under the B-th combustion category, and recording as xi iB ；
H5, processing according to the method of the steps H1-H3, evaluating the comprehensive fire environment diffusion danger coefficient of each axial placement point under the C combustion category, and recording as xi iC 。
2. The system of claim 1, wherein the dimensional parameters of the cable tunnel include length, width and height of the cable tunnel.
3. The fire inversion simulation analysis system based on container type cable tunnel according to claim 1, wherein the inner walls of the container type cable tunnel comprise a left side wall, a right side wall, a top wall and a bottom wall.
4. The fire inversion simulation analysis system based on the container type cable tunnel as claimed in claim 1, wherein the environment detection terminal comprises a temperature sensor, a carbon monoxide sensor, a smoke concentration sensor, a hydrogen chloride sensor and a PM10 dust monitor; the environmental parameters of the detection points comprise: temperature, carbon monoxide concentration, smoke concentration, hydrogen chloride concentration, and PM10 concentration at each detection point.
5. The fire inversion simulation analysis system based on the container type cable tunnel according to claim 1, wherein the step of obtaining the comprehensive fire diffusion coefficient corresponding to each circumferential placement point corresponding to each axial placement point under different combustion categories comprises the following steps:
d1: according to the method in the step H1, the environmental parameters of all the axial placement points corresponding to all the circumferential placement points under the A-th combustion category and all the detection points at all the combustion time points form an environmental parameter set of all the axial placement points corresponding to all the circumferential placement points under the A-th combustion category;
d2: processing according to the method in the step H2, counting diffusion degree values of the environmental parameters corresponding to the detection points of the circumferential placement points under the A-th combustion category and corresponding to the axial placement points, and recording the diffusion degree values as sigma w ijA a；
D3: processing according to the method of the step H3 to evaluate the comprehensive fire environment expansion of each axial placing point corresponding to each circumferential placing point under the A combustion categoryScattering risk coefficient, as
D4: processing according to the method of the steps D1-D3, evaluating the comprehensive fire environment diffusion danger coefficients of the circumferential placement points corresponding to the axial placement points under the B-th combustion category, and recording the comprehensive fire environment diffusion danger coefficients as
D5: processing according to the method of the steps D1-D3, evaluating the comprehensive fire environment diffusion danger coefficients of the circumferential placement points corresponding to the axial placement points under the C-th combustion category, and recording the comprehensive fire environment diffusion danger coefficients as
6. The fire inversion simulation analysis system based on the container type cable tunnel according to claim 1, wherein the analysis cloud platform further sorts the environmental parameters of the detection points of the axial placement points under different combustion categories in an order from large diffusion degree values to small diffusion degree values, obtains the environmental parameter diffusion degree sorting results of the detection points of the axial placement points under different combustion categories, simultaneously processes the environmental parameters corresponding to the detection points of the circumferential placement points under different combustion categories according to the method to obtain the environmental parameter diffusion degree sorting results of the circumferential placement points corresponding to the axial placement points under different combustion categories, and sends the sorting results to the background display terminal for background display.
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