CN110500512B - Gas pipe burst analysis method and device - Google Patents
Gas pipe burst analysis method and device Download PDFInfo
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- CN110500512B CN110500512B CN201910763220.2A CN201910763220A CN110500512B CN 110500512 B CN110500512 B CN 110500512B CN 201910763220 A CN201910763220 A CN 201910763220A CN 110500512 B CN110500512 B CN 110500512B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
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Abstract
The invention provides a method and a device for analyzing gas pipe explosion, which have higher accuracy of pipe explosion analysis and comprise the following steps: acquiring a gas pipe explosion position; acquiring real-time state information of a key equipment node; acquiring real-time air pressure information of a pressure regulating device node, and acquiring flow direction attributes of each pipe section according to the real-time air pressure information of the pressure regulating device node; marking the gas pipe explosion position, the real-time state information of key equipment nodes and the flow direction attribute of each pipe section in a simulation pipe network; performing connectivity analysis on the simulation pipe network, and finding out all paths flowing through the pipe bursting position of the fuel gas; aiming at each path, searching the nearest non-closed controllable valve node upstream to realize valve closing analysis; and aiming at each path, searching the nearest non-closed controllable valve node downstream, and acquiring all pipe sections between the gas pipe explosion position and the nearest downstream non-closed controllable valve node to realize valve closing analysis and pipe explosion influence area analysis.
Description
Technical Field
The invention relates to the technical field of gas pipe network management, in particular to a gas pipe burst analysis method and a gas pipe burst analysis device.
Background
In recent years, with the rapid development of economy, the urbanization process of China is continuously promoted. Underground pipelines are important components of urban infrastructure, and the number and the length of the underground pipelines are rapidly expanded. Various underground pipelines greatly facilitate daily life of people, however, the explosion accidents of the underground pipelines triggered by various reasons bring great threat to social property and personal safety, and due to high danger of the explosion accidents, the emergency repair work after the explosion cannot be ignored. How to realize a perfect pipe explosion analysis function to shorten the rush-repair time and reduce the gas stopping range, thereby effectively reducing the loss caused by pipe explosion to the minimum, and being the first problem to be solved for improving the modernized management level of a pipe network.
Disclosure of Invention
The invention aims to solve the technical problems and provides a gas pipe explosion analysis method and a gas pipe explosion analysis device, which can more accurately realize upstream valve closing analysis, downstream valve closing analysis and pipe explosion influence area analysis, thereby improving emergency rescue efficiency, shortening emergency repair time, effectively shortening gas stopping range and greatly reducing loss caused by pipe explosion.
The technical scheme adopted by the invention is as follows:
a gas pipe explosion analysis method comprises the following steps: acquiring a gas pipe explosion position; acquiring real-time state information of a key equipment node; acquiring real-time air pressure information of a pressure regulating device node, and acquiring flow direction attributes of each pipe section according to the real-time air pressure information of the pressure regulating device node; marking the gas pipe explosion position, the real-time state information of the key equipment nodes and the flow direction attribute of each pipe section in a simulation pipe network; performing connectivity analysis on the simulation pipe network, and finding out all paths flowing through the gas pipe explosion position; searching the nearest non-closed controllable valve node upstream for each path to realize valve closing analysis; and aiming at each path, searching the nearest non-closed controllable valve node downstream, and acquiring all pipe sections between the gas pipe explosion position and the nearest downstream non-closed controllable valve node to realize valve closing analysis and pipe explosion influence area analysis.
The key equipment nodes comprise air sources, pressure regulating stations, pressure regulating boxes and valves, and the state information comprises maintenance, opening and closing.
The pressure regulating equipment node comprises a pressure regulating station and a pressure regulating box.
The real-time air pressure information of the pressure regulating equipment nodes is acquired node by adopting a depth-first algorithm.
A gas booster analysis device, comprising: the system comprises a pipe network simulation module, a data processing module and a data processing module, wherein the pipe network simulation module is used for acquiring a gas pipe burst position, real-time state information of key equipment nodes and real-time air pressure information of pressure regulating equipment nodes, acquiring flow direction attributes of all pipe sections according to the real-time air pressure information of the pressure regulating equipment nodes, and marking the gas pipe burst position, the real-time state information of the key equipment nodes and the flow direction attributes of all the pipe sections in a simulation pipe network; and the pipe explosion analysis module is used for performing connectivity analysis on the simulation pipe network, searching all paths flowing through the gas pipe explosion position, searching the nearest non-closed controllable valve node upstream for each path to realize valve closing analysis, searching the nearest non-closed controllable valve node downstream for each path, and acquiring all pipe sections between the gas pipe explosion position and the nearest downstream non-closed controllable valve node to realize valve closing analysis and pipe explosion influence area analysis.
The key equipment nodes comprise air sources, pressure regulating stations, pressure regulating boxes and valves, and the state information comprises maintenance, opening and closing.
The pressure regulating equipment node comprises a pressure regulating station and a pressure regulating box.
The pipe network simulation module adopts a depth-first algorithm to acquire real-time air pressure information of the pressure regulating equipment nodes node by node.
The invention has the beneficial effects that:
the invention can more accurately realize the upstream valve closing analysis, the downstream valve closing analysis and the pipe burst influence area analysis by statically marking the real-time state information of key equipment nodes and carrying out real-time pipe network simulation of pipe segment dynamic flow direction analysis and implementing communication analysis and multi-path searching pipe burst analysis based on real-time pipe network simulation data, thereby improving the emergency rescue efficiency, shortening the emergency repair time, effectively shortening the gas stopping range and greatly reducing the loss caused by pipe burst.
Drawings
Fig. 1 is a flowchart of a gas pipe burst analysis method according to an embodiment of the present invention;
FIG. 2 is a depth-first algorithm traversal diagram according to an embodiment of the present invention;
FIG. 3 is a flow chart of obtaining real-time barometric pressure information according to an embodiment of the present invention;
FIG. 4 is a flow diagram of connectivity analysis in accordance with one embodiment of the present invention;
FIG. 5 is a flow diagram of upstream tracing according to one embodiment of the present invention;
FIG. 6 is a flow diagram of downstream tracing according to one embodiment of the present invention;
fig. 7 is a schematic block diagram of a gas explosion analysis device according to an embodiment of the present invention.
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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the gas pipe explosion analysis method according to the embodiment of the present invention includes the following steps:
and S1, acquiring the position of gas pipe explosion.
And S2, acquiring the real-time state information of the key equipment node.
And S3, acquiring the real-time air pressure information of the pressure regulating equipment node, and acquiring the flow direction attribute of each pipe section according to the real-time air pressure information of the pressure regulating equipment node.
And S4, marking the real-time state information of the gas pipe explosion position and the key equipment node and the flow direction attribute of each pipe section in the simulation pipe network.
In one embodiment of the invention, the key equipment nodes may include gas sources, pressure regulating stations, pressure regulating boxes, valves, etc., and the status information may include maintenance, opening, closing, etc. Specifically, the real-time status information of the air source, the pressure regulating station, the pressure regulating box, the valve and other devices can be acquired through an EAM (Enterprise Asset Management) system or other business systems.
In one embodiment of the invention, the voltage regulating device node may comprise a voltage regulating station, a voltage regulating box, or the like. Specifically, a depth-first algorithm may be adopted to obtain real-time air pressure information of the pressure regulating device node by node. The depth-first algorithm And the breadth-first algorithm are basically the same in time complexity, And under the condition of no pressure regulation, the gas pressures of all pipe sections through which the gas flows are assumed to be equal (the factors influencing the small-scale change of the gas pressure, such as pipe friction, are ignored here to improve the analysis efficiency).
The traversal procedure of depth first algorithm (DFS) can refer to FIG. 2, from a certain vertex V in the graph1Starting: (1) visit vertex V1(ii) a (2) In turn from V1Starting from the non-accessed adjacent points, performing depth-first traversal on the graph; until the figure neutralizes V1Vertices with path communication are all visited; (3) if the vertex in the graph is not accessed, starting from an unvisited vertex, performing depth-first traversal again until all the vertices in the graph are accessed.
Aiming at the embodiment of the invention, the processing logic judgment can be added to complete the calculation of the air pressure value of each pipe section, and the processed node is marked to support the judgment of not traversing the pressure regulating station and the pressure regulating box. The processing logic is as shown in fig. 3, and can first obtain the current node information, the previous node information, and the pipe section information formed by the current node and the previous node, and then judge whether the current node is in a maintenance or closed state; if yes, the air pressure of the pipe section is taken as the air pressure of a node, and if not, whether the current node is a pressure regulating station or a pressure regulating box is judged; if the current node is not a pressure regulating station or a pressure regulating box, the air pressure of the pipe section is the air pressure of the previous node, and if the current node is the pressure regulating station or the pressure regulating box, the topological flow information of the pipe section is further acquired; judging whether the direction is the outlet direction; if yes, the air pressure of the pipe section is taken as the air pressure of a previous node, and if not, the air pressure of the pipe section is taken as the air pressure of the current node. After the air pressure of the pipe sections is obtained, the current nodes are marked to be searched, the flow direction is marked according to the air pressure, namely the real-time air pressure of each pipe section is recorded, and the flow direction attribute of each pipe section is analyzed and marked in real time according to the characteristic that fuel gas flows from the high position to the low position of the air pressure for subsequent use. Further, whether the current node is in a maintenance or closing state can be judged, if not, the next node is subjected to deep search, if so, the previous branch node is traced back, namely when the equipment node with the marked maintenance or closing state is encountered, the current deep search is stopped, and the previous pipe section is traced back to continue analysis until all the pipe sections flow to the whole state.
Through the traversal, the related air pressure information of the pipe section with the complete topological relation is completed, the topological relation is disconnected, the unmarked gas source station, the pressure regulating station and the box can be found out, and the processing is carried out again according to the depth-first algorithm until no situation occurs.
And S5, performing connectivity analysis on the simulation pipe network, and finding out all paths flowing through the position of the gas explosion.
The flow of connectivity analysis is shown in fig. 4, and may perform real-time flow direction analysis to extract a full graph connectivity list, where the full graph connectivity list may be open source data, may be directly obtained by query, and includes data of the connectivity list according to the flow direction. Then inquiring whether to be communicated or not, if so, giving a communication prompt and giving all communication paths; and if not, giving a disconnected prompt.
S6, for each path, looking up the nearest non-closing controllable valve node upstream to implement the valve closing analysis.
The step is an upstream tracing process, and a specific flow is as shown in fig. 5, after a full graph connectivity list is extracted, all paths with numbers of pipe explosion nodes (where a pipe explosion position is described as a node, and a pipe explosion position is also a starting point of the whole pipe explosion analysis process) can be searched, if one or more paths exist, one of the paths is extracted, the nearest valve node is searched upwards, and after the valve node is found, valve information is extracted until all paths are processed, and all valve information is given. All valves given in this flow are valves that need to be closed upstream of the location of the pipe burst.
S7, aiming at each path, searching the nearest non-closed controllable valve node downstream, and acquiring all pipe sections between the gas pipe explosion position and the nearest downstream non-closed controllable valve node, so as to realize valve closing analysis and pipe explosion influence area analysis.
The step is a downstream tracking process, a specific flow is shown in fig. 6, after a full graph connectivity list is extracted, all paths with pipe explosion node numbers can be searched, if one or more paths exist, one of the paths is extracted, the nearest pressure regulating station, box and valve node is searched downwards to serve as a stop node, after the stop node is found, all path information from the pipe explosion node to the stop node is extracted until all paths are processed, and affected pipe section information is given. The valve in the cut-off node searched by the process is the valve needing to be closed at the downstream of the pipe explosion position, and the given pipe section information of the influence is the pipe section of the pipe explosion influence area.
It should be appreciated that the valve closed status is addressed when obtaining flow direction attributes of a pipe segment prior to the upstream trace and downstream trace processes, thereby avoiding analytical errors caused by an uncontrollable valve.
The execution sequence of steps S1-S3 and the execution sequence of steps S6-S7 are not limited to the sequence shown in fig. 1, and steps S1-S3 may be executed in other sequences or in parallel, and steps S6-S7 may be executed in other sequences or in parallel when actually executed. The upstream trace and the downstream trace described above support only a non-circular pipe network.
According to the gas pipe burst analysis method provided by the embodiment of the invention, the static mark of the real-time state information of the key equipment nodes and the real-time pipe network simulation of the pipe section dynamic flow direction analysis are included, and the pipe burst analysis of communication analysis and multipath searching is implemented based on the real-time pipe network simulation data, so that the upstream valve closing analysis, the downstream valve closing analysis and the pipe burst influence area analysis can be more accurately realized, the emergency rescue efficiency can be improved, the emergency repair time can be shortened, the gas stopping range can be effectively reduced, and the loss caused by pipe burst can be greatly reduced.
In order to realize the gas pipe explosion analysis method of the embodiment, the invention further provides a gas pipe explosion analysis device.
As shown in fig. 7, the gas pipe explosion analysis device according to the embodiment of the present invention includes a pipe network simulation module 10 and a pipe explosion analysis module 20. The pipe network simulation module 10 is configured to obtain a gas pipe burst position, real-time state information of a key device node, and real-time air pressure information of a pressure regulating device node, obtain a flow direction attribute of each pipe segment according to the real-time air pressure information of the pressure regulating device node, and mark the gas pipe burst position, the real-time state information of the key device node, and the flow direction attribute of each pipe segment in a simulation pipe network; the pipe explosion analysis module 20 is configured to perform connectivity analysis on the simulation pipe network, find out all paths that flow through the pipe explosion position of the gas, find the nearest non-closed controllable valve node upstream for each path to implement valve closing analysis, find the nearest non-closed controllable valve node downstream, and obtain all pipe segments between the pipe explosion position of the gas and the nearest non-closed controllable valve node downstream, so as to implement valve closing analysis and pipe explosion influence area analysis.
In one embodiment of the invention, the key equipment nodes may include gas sources, pressure regulating stations, pressure regulating boxes, valves, etc., the status information may include maintenance, opening, closing, etc., and the pressure regulating equipment nodes may include pressure regulating stations, pressure regulating boxes, etc.
In an embodiment of the present invention, the pipe network simulation module 10 may use a depth-first algorithm to obtain real-time air pressure information of the pressure regulating device nodes node by node. The depth-first algorithm and the breadth-first algorithm are basically the same in time complexity, and under the condition of no pressure regulation, the gas pressures of all pipe sections through which the gas flows are assumed to be equal (factors influencing small-scale changes of the gas pressure, such as pipe friction, are ignored here to improve analysis efficiency).
The traversal process of the depth-first algorithm can refer to FIG. 2, and a vertex V in the graph is obtained1Starting: (1) visit vertex V1(ii) a (2) In turn from V1Starting from the non-accessed adjacent points, performing depth-first traversal on the graph; until the figure neutralizes V1Vertices with path communication are all visited; (3) if the vertex in the graph is not accessed, starting from an unvisited vertex, performing depth-first traversal again until all the vertices in the graph are accessed.
For further functions of the pipe network simulation module 10 and the pipe explosion analysis module 20, reference may be made to the related embodiments of the gas pipe explosion analysis method, which are not described herein again.
According to the gas pipe explosion analysis device provided by the embodiment of the invention, real-time pipe network simulation is carried out through the pipe network simulation module, wherein the real-time pipe network simulation comprises static marks of real-time state information of key equipment nodes and dynamic flow direction analysis of pipe sections, and the pipe explosion analysis module is used for carrying out communication analysis and multi-path searching pipe explosion analysis based on real-time pipe network simulation data, so that the upstream valve closing analysis, the downstream valve closing analysis and the pipe explosion influence area analysis can be more accurately realized, the emergency rescue efficiency can be improved, the emergency repair time can be shortened, the gas stopping range can be effectively reduced, and the loss caused by pipe explosion can be greatly reduced.
In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
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 are not necessarily intended to 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. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (2)
1. A gas pipe explosion analysis method is characterized by comprising the following steps:
acquiring a gas pipe explosion position;
acquiring real-time state information of key equipment nodes, wherein the key equipment nodes comprise an air source, a pressure regulating station, a pressure regulating box and a valve, and the state information comprises maintenance, opening and closing;
the method comprises the steps of obtaining real-time air pressure information of a pressure regulating device node, obtaining flow direction attributes of all pipe sections according to the real-time air pressure information of the pressure regulating device node, wherein the pressure regulating device node comprises a pressure regulating station and a pressure regulating box, specifically, firstly obtaining current node information, previous node information and pipe section information formed by the current node and the previous node, and then judging whether the current node is in a maintenance or closing state; if yes, the air pressure of the pipe section is taken as the air pressure of a node, and if not, whether the current node is a pressure regulating station or a pressure regulating box is judged; if the current node is not a pressure regulating station or a pressure regulating box, the air pressure of the pipe section is the air pressure of the previous node, and if the current node is the pressure regulating station or the pressure regulating box, the topological flow information of the pipe section is further acquired; judging whether the direction is the outlet direction; if yes, the air pressure of the pipe section is taken as the air pressure of a previous node, and if not, the air pressure of the pipe section is taken as the air pressure of the current node; after the air pressure of the pipe sections is obtained, marking the searched current nodes, marking the flow direction according to the air pressure, namely analyzing and marking the flow direction attribute of each pipe section in real time by recording the real-time air pressure of each pipe section according to the characteristic that the fuel gas flows from the high position to the low position of the air pressure;
marking the gas pipe explosion position, the real-time state information of the key equipment nodes and the flow direction attribute of each pipe section in a simulation pipe network;
performing connectivity analysis on the simulation pipe network, finding out all paths flowing through the gas pipe explosion position, specifically performing real-time flow direction analysis, and extracting a full-graph connectivity list, wherein the full-graph connectivity list comprises communication list data according to the flow direction;
aiming at each path, searching the nearest non-closed controllable valve node upstream to realize valve closing analysis, specifically searching all paths with pipe explosion node numbers, if one or more paths exist, extracting one of the paths, searching the nearest valve node upwards, extracting valve information after the valve node is found, and giving out all valve information after all paths are processed;
and aiming at each path, searching a nearest non-closed controllable valve node downstream, acquiring all the pipe sections between the gas pipe explosion position and the nearest downstream non-closed controllable valve node to realize valve closing analysis and pipe explosion influence area analysis, specifically searching all the paths with pipe explosion node numbers, if one or more paths exist, extracting one of the paths, searching a nearest pressure regulating station, a pressure regulating box and a valve node downwards as a stop node, extracting all path information from the pipe explosion node to the stop node after the stop node is found, giving the influenced pipe section information until all the paths are processed, wherein the valve in the searched stop node is the valve needing to be closed downstream of the pipe explosion position, and the given influenced pipe section information is the pipe section of the pipe explosion influence area.
2. The utility model provides a gas explodes tub analytical equipment which characterized in that includes:
the pipe network simulation module is used for acquiring the gas pipe explosion position, the real-time state information of key equipment nodes and the real-time air pressure information of pressure regulating equipment nodes, and the flow direction attribute of each pipe section is obtained according to the real-time air pressure information of the pressure regulating equipment node, and marking the gas pipe explosion position, the real-time state information of the key equipment nodes and the flow direction attribute of each pipe section in a simulation pipe network, the key equipment nodes comprise an air source, a pressure regulating station, a pressure regulating box and a valve, the state information comprises maintenance, opening and closing, the pipe network simulation module firstly acquires current node information, previous node information and pipe section information formed by the current node and the previous node, and then judges whether the current node is in a maintenance or closed state; if yes, the air pressure of the pipe section is taken as the air pressure of a node, and if not, whether the current node is a pressure regulating station or a pressure regulating box is judged; if the current node is not a pressure regulating station or a pressure regulating box, the air pressure of the pipe section is the air pressure of the previous node, and if the current node is the pressure regulating station or the pressure regulating box, the topological flow information of the pipe section is further acquired; judging whether the direction is the outlet direction; if yes, the air pressure of the pipe section is taken as the air pressure of a node, and if not, the air pressure of the pipe section is taken as the air pressure of the current node; after the air pressure of the pipe sections is obtained, marking the searched current nodes, marking the flow direction according to the air pressure, namely analyzing and marking the flow direction attribute of each pipe section in real time by recording the real-time air pressure of each pipe section according to the characteristic that the fuel gas flows from the high position to the low position of the air pressure;
a pipe explosion analysis module, which is used for analyzing the connectivity of the simulation pipe network, finding out all paths flowing through the position of the gas pipe explosion, finding the nearest non-closing controllable valve node upstream for each path to realize valve closing analysis, finding the nearest non-closing controllable valve node downstream, and obtaining all pipe sections between the position of the gas pipe explosion and the nearest non-closing controllable valve node downstream to realize valve closing analysis and pipe explosion influence area analysis, and the pipe explosion analysis module is used for specifically performing real-time flow direction analysis, extracting a full graph connectivity list, wherein the full graph connectivity list comprises communication list data according to the flow direction, finding out all paths with pipe explosion node numbers, if one or more paths exist, extracting one of the paths, finding the nearest valve node upwards, and extracting valve information after finding out the valve node, and giving out all valve information until all paths are processed, searching all paths with pipe explosion node numbers, if one or more paths exist, extracting one path, downwards searching the nearest pressure regulating station, pressure regulating box and valve node to serve as a stop node, extracting all path information from the pipe explosion node to the stop node after the stop node is found, giving out affected pipe section information until all paths are processed, wherein the found valve in the stop node is a valve needing to be closed at the downstream of the pipe explosion position, and the given affected pipe section information is a pipe section in the pipe explosion affected area.
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| CN111102476B (en) * | 2019-12-14 | 2021-11-09 | 西安建筑科技大学 | Pipe burst searching method based on three-dimensional underground pipeline |
| CN111814289B (en) * | 2020-09-08 | 2020-12-22 | 成都同飞科技有限责任公司 | Water supply pipe network pipe burst analysis method and analysis system based on schema theory |
| CN112214648A (en) * | 2020-10-13 | 2021-01-12 | 合肥小龟快跑信息科技有限公司 | Method for realizing tube burst analysis logic according to abnormal information fed back by acquisition points |
| CN113483270B (en) * | 2021-07-09 | 2023-05-02 | 中国人民解放军63796部队 | Online detection method for closed cavity of low-temperature liquid pipe network |
| CN117091079B (en) * | 2023-10-19 | 2024-01-16 | 杭州缥缈峰科技有限公司 | Valve closing method and system based on multi-air-source urban gas pipe network |
| CN117408006B (en) * | 2023-12-14 | 2024-03-05 | 上海叁零肆零科技有限公司 | Rush repair scheme generation method, device, equipment and medium based on urban fuel pipe network |
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