CN-122006172-A - Method and system for regulating and controlling jet flow fire extinguishment of terminal building based on concurrent interference judgment

CN122006172ACN 122006172 ACN122006172 ACN 122006172ACN-122006172-A

Abstract

The application discloses a station building jet fire extinguishing regulation and control method and system based on concurrent interference judgment. Building geometry data, fire scene parameters and jet device working condition information of a fire alarm area are obtained after a regulation and control request is received, a three-dimensional barrier-free jet coverage network combining structural barriers and height attributes is constructed, and a feasible jet track pedigree is generated based on water supply pressure and flow conditions. Further, a jet flow covering configuration with instant inhibition and expected protection capability is generated according to the fire position and the diffusion trend, and the cooperative judgment of the space and the dynamic interference of the concurrent execution of the multiple devices is carried out, so that the safe implementation of the configuration is ensured. The method realizes modeling, intelligent configuration and collaborative control of jet fire extinguishment in a high space of the terminal building, ensures overall collaborative performance and operational reliability of concurrent execution of multiple jet flows at a system level, and comprehensively improves the efficiency of the high space fire extinguishment.

Inventors

LIU CHAO
Ye Guanjie
CHEN MIN
ZHANG LIANGYU
Zeng Saitang
ZHAN GUOQIANG
He Kongsheng
WU XIONGFEI
FENG DELIANG
MA ZHONGGANG

Assignees

中建三局集团有限公司
云南机场建设发展有限公司

Dates

Publication Date: 20260512
Application Date: 20260305

Claims (10)

1. A method for regulating and controlling jet flow fire extinguishment of a terminal building based on concurrent interference judgment is characterized by comprising the following steps: s1, when a jet fire extinguishing regulation and control request sent by a fire alarm system is received, determining a fire alarm area identifier according to the request, and acquiring corresponding station building geometric data, fire scene data, a jet device space coordinate set and device water supply working condition data based on the identifier, wherein the fire scene data comprises space coordinates and diffusion vectors of a fire occurrence point, the station building geometric data comprises three-dimensional space coordinates and area height attributes of all structural surfaces and barriers corresponding to the fire alarm area identifier, and the device water supply working condition data comprises pressure intervals, flow ranges and jet head working modes of each jet device water supply unit associated with the fire alarm area identifier; S2, performing jet network construction processing under space constraint on the building geometric data of the terminal building and the space coordinate set of the jet device, so as to obtain an unobstructed jet network model, wherein the jet network construction processing under the space constraint is to build a three-dimensional jet coverage network by combining the space position of an obstacle and the height attribute of an area; s3, performing jet parameter space mapping processing on the barrier-free jet network model and the device water supply working condition data so as to obtain a jet track pedigree, wherein the jet parameter space mapping processing is based on a fluid dynamic relationship to match a feasible pressure flow mode working parameter for each geometric track in the barrier-free network; s4, carrying out dynamic coverage configuration processing on the jet flow track pedigree and fire scene data so as to obtain an adaptive jet flow track group, wherein the dynamic coverage configuration processing is to construct jet flow track configuration simultaneously comprising instant inhibition and expected protection according to fire space coordinates and diffusion vectors; S5, carrying out system concurrency and cooperative judgment processing on the adaptive jet flow track group, and sending an execution instruction to a fire extinguishing system when no jet flow interference is confirmed, wherein the system concurrency and cooperative judgment processing is to verify the space and dynamic interference state among jet flows of a plurality of jet flow devices when the jet flow devices run simultaneously according to the track group.
2. The method for regulating and controlling jet fire extinguishing of a terminal building based on concurrency interference determination as set forth in claim 1, wherein the step S2 comprises the following substeps: S201, carrying out space reachable domain analysis processing on the building geometric data of the terminal building and the space coordinate set of the jet devices so as to obtain device reachable domain data, wherein the space reachable domain analysis processing is used for calculating barrier-free coverage domains of the jet devices in three-dimensional space based on barrier space positions and region height attributes; S202, performing network topology synthesis processing on the device reachable domain data to obtain an unobstructed jet network model, wherein the network topology synthesis processing is to perform spatial superposition and association on unobstructed coverage domains of all devices to form a unified jet coverage network.
3. The method for regulating and controlling jet fire extinguishing of a terminal building based on concurrency interference determination as set forth in claim 1, wherein the step S3 comprises the following substeps: S301, carrying out track parameter coupling solving processing on the barrier-free jet network model and the device water supply working condition data so as to obtain a jet working point parameter set, wherein the track parameter coupling solving processing is to traverse geometric tracks in the barrier-free jet network model, calculate feasible pressure and flow combinations of the tracks in the device water supply working condition data range for each track through a jet kinematic equation and an atomization critical criterion, and associate corresponding jet working modes; S302, carrying out track envelope reconstruction processing on the jet flow working point parameter set so as to obtain a jet flow track pedigree, wherein the track envelope reconstruction processing is to integrate a discrete track set with specific working parameters into a parameterized curved surface model representing the executable jet flow range of the whole space.
4. A method of fire extinguishing control of a terminal jet based on concurrent interferometry according to any of claims 1-3, wherein step S4 comprises the sub-steps of: S401, performing instant inhibition track construction processing on the jet flow track pedigree and fire scene data so as to obtain a basic jet flow track configuration, wherein the instant inhibition track construction processing is to establish a jet flow track set directly acting on a fire source area in the jet flow track pedigree based on fire space coordinates; And S402, performing protective boundary construction processing on the basic jet flow track configuration and the fire scene data so as to obtain an adaptive jet flow track group, wherein the protective boundary construction processing is to form a protective jet flow boundary for inhibiting fire spreading on the outer edge of the basic jet flow track configuration based on a diffusion vector.
5. The method for regulating and controlling jet fire extinguishing of a terminal building based on concurrency interference determination as set forth in claim 4, wherein the step S5 comprises the following substeps: S501, carrying out concurrent interference analysis processing on the adaptive jet flow track group so as to obtain an interference analysis result, wherein the concurrent interference analysis processing is to identify potential conflicts with water column collision or mutual weakening of kinetic energy by calculating the superposition effect of a space intersection relation and a flow field of any two or more tracks in the jet flow group under the current jet flow working condition; S502, carrying out cooperative feasibility judging processing on the interference analysis result so as to send an execution instruction to a fire extinguishing system when no jet flow interference is confirmed, wherein the cooperative feasibility judging processing is based on the interference analysis result, judges that all potential conflicts are lower than a preset threshold value, and confirms that the adaptive jet flow track group can be executed concurrently as a whole system without interference.
6. The method for controlling fire extinguishing by using the jet flow of the terminal building based on the concurrent interference judgment according to claim 2 is characterized in that the spatial reachable domain analysis processing in S201 is to calculate a barrier-free coverage domain of each jet device in a three-dimensional space based on the spatial position and the regional height attribute of the barrier, the barrier-free coverage domain comprises initial jet envelope generation processing and three-dimensional space shielding analysis processing, and the network topology synthesis processing in S202 is to perform spatial superposition and association on the barrier-free coverage domain of each device to form a unified jet flow coverage network, and the voxelized spatial unified modeling processing and adjacency graph construction processing are included.
7. The method for fire extinguishing regulation and control of the jet flow of the terminal building based on concurrent interference judgment according to claim 3, wherein the track parameter coupling solving process in the step S301 is to traverse geometric tracks in a barrier-free jet flow network model, a feasible pressure and flow combination of each track in a device water supply working condition data range is calculated through a jet flow kinematic equation and an atomization critical criterion, a corresponding jet head working mode is associated and comprises track dynamic parameter solving process and atomization critical state verifying process, the track envelope reconstructing process in the step S302 is to integrate a discrete track set with specific working parameters into a parameterized curved surface model representing the whole space executable jet flow range, and the parameterized curved surface fitting process and the dynamic jet flow capacity modeling process are included.
8. The method for controlling fire extinguishment of a terminal building jet based on concurrency interference determination according to claim 4, wherein the immediate inhibition track construction process in S401 is a process of establishing a jet track set directly acting on a fire source area in a jet track pedigree based on fire space coordinates and comprises a fire source coordinate mapping process and an optimal track screening process, and the protection boundary construction process in S402 is a process of forming a protection jet boundary for inhibiting fire spreading along an extension direction outside a basic jet track configuration based on a diffusion vector and comprises a spreading path prediction process and a boundary track generation process.
9. The method for controlling fire extinguishing by using the jet flow of the terminal building based on the concurrent interference judgment according to claim 5, wherein the concurrent interference analysis processing in S501 is to identify potential conflicts with water column collision or mutual weakening of kinetic energy by calculating the spatial intersection relation and flow field superposition effect of any two or more tracks in a jet flow group under the current jet flow working condition, the potential conflicts comprise jet flow track spatial collision detection processing and concurrent flow field superposition analysis processing, the collaborative feasibility judgment processing in S502 is to judge that all potential conflicts are lower than a preset threshold value based on the interference analysis result, and the adaptive jet flow track group can be used as a non-interference overall system to concurrently execute the conflict index threshold value comparison processing and the overall system feasibility judgment processing.
10. A terminal building jet fire extinguishing regulation and control system based on concurrent interference determination, the system comprising: The system comprises a fire alarm system, an acquisition unit, a device water supply working condition data acquisition unit and a control unit, wherein the fire alarm system is used for receiving a jet flow fire extinguishing regulation and control request sent by the fire alarm system, determining a fire alarm area identifier according to the request, and acquiring corresponding station building geometric data, fire scene data, a jet flow device space coordinate set and device water supply working condition data based on the identifier, wherein the fire scene data comprises space coordinates and diffusion vectors of a fire occurrence point; The jet network construction unit is used for carrying out jet network construction processing under space constraint on the building geometric data of the terminal building and the space coordinate set of the jet device so as to obtain an unobstructed jet network model, wherein the jet network construction processing under the space constraint is to build a three-dimensional jet coverage network by combining the space position of an obstacle and the height attribute of an area; The parameter mapping unit is used for performing jet parameter space mapping processing on the barrier-free jet network model and the device water supply working condition data so as to obtain a jet track pedigree, wherein the jet parameter space mapping processing is based on a fluid dynamic relationship to match a feasible pressure flow mode working parameter for each geometrical track in the barrier-free network; the dynamic covering configuration unit is used for carrying out dynamic covering configuration processing on the jet flow track pedigree and fire scene data so as to obtain an adaptive jet flow track group, wherein the dynamic covering configuration processing is used for constructing jet flow track configuration simultaneously comprising instant inhibition and expected protection according to fire space coordinates and diffusion vectors; And the cooperative judgment unit is used for carrying out system concurrency cooperative judgment processing on the adaptive jet flow track group so as to send an execution instruction to the fire extinguishing system when no jet flow mutual interference is confirmed, wherein the system concurrency cooperative judgment processing is used for verifying the space and dynamic interference state among jet flows of a plurality of jet flow devices when the jet flow devices run simultaneously according to the track group.

Description

Method and system for regulating and controlling jet flow fire extinguishment of terminal building based on concurrent interference judgment Technical Field The invention relates to the field of fire engineering, in particular to a station building jet fire extinguishing regulation and control method and system based on concurrent interference judgment. Background The terminal building is used as a typical high-space building, and has high internal altitude, large span, complex structure and a large number of fixed barriers. In case of fire in such space, the fire is rapidly developed and is influenced by the heated smoke plume and the building structure to present a complex three-dimensional spreading trend. Traditional fire extinguishing means face many challenges such as difficulty in jet flow to effectively reach a fire source, limited coverage range and the like in such environments, so that highly intelligent and accurate jet flow fire extinguishing regulation and control technology is needed to deal with the challenges. In the prior art, the automatic jet fire extinguishing system in a large space mostly adopts a preset scheme based on region division. Specifically, the system presets grouping and starting logic of the spray heads according to functional partitions of the building plane, and after fire alarm is triggered, a group of jet devices in or adjacent to a protection area to which an alarm point belongs are started generally according to the protection area. The jet parameters of the device are often set according to conservative experience covering the maximum protection radius, and the working mode is relatively fixed. The whole fire extinguishing strategy generation process mainly depends on the matching of the plane position mapping of the alarm signal and preset logic. However, the prior art solutions have significant limitations. The planning of the jet flow coverage area fails to deeply fuse the accurate three-dimensional space coordinates of the building component and the obstacle, so that the theoretical coverage area is not matched with the actual reachable space, and the jet flow is blocked or a protection blind area appears. The lack of strict hydrodynamic coupling between the setting of the working parameters and the actual motion trail of the jet in the three-dimensional space cannot ensure that the jet still has enough fire extinguishing kinetic energy at the end of the specific trail. The strategy generation mechanism is static and preset, and a fire extinguishing configuration with immediate inhibition and expected protection is difficult to dynamically construct according to the real-time position and the diffusion vector of the fire. More importantly, when the multi-device concurrent fire extinguishing is started, the prior scheme lacks of pre-analysis and verification of the mutual interference of space collision and aerodynamic field generated between jet flows, and the system internal consumption caused by the lack of cooperative interference verification directly leads to the reduction and even failure of the overall fire extinguishing efficiency. Disclosure of Invention In view of the above-mentioned actual situation, the application provides a method and a system for controlling the fire extinguishing of jet flow of a terminal building based on concurrent interference judgment, so as to solve the technical limitations that in the prior art, jet flow coverage is not matched with a building space, working parameters are disjointed with a three-dimensional motion track, a fire extinguishing strategy cannot be dynamically adapted to fire, and the overall efficiency of the system is reduced or even fails due to lack of cooperative interference verification when multiple devices are concurrently executed. A method for regulating and controlling jet flow fire extinguishment of a terminal building based on concurrent interference judgment comprises the following steps: s1, when a jet fire extinguishing regulation and control request sent by a fire alarm system is received, determining a fire alarm area identifier according to the request, and acquiring corresponding station building geometric data, fire scene data, a jet device space coordinate set and device water supply working condition data based on the identifier, wherein the fire scene data comprises space coordinates and diffusion vectors of a fire occurrence point, the station building geometric data comprises three-dimensional space coordinates and area height attributes of all structural surfaces and barriers corresponding to the fire alarm area identifier, and the device water supply working condition data comprises pressure intervals, flow ranges and jet head working modes of each jet device water supply unit associated with the fire alarm area identifier; S2, performing jet network construction processing under space constraint on the building geometric data of the terminal building and the space coordinate set o