CN111678050A - Natural gas pipeline leakage detection method, system, terminal and storage medium thereof - Google Patents
Natural gas pipeline leakage detection method, system, terminal and storage medium thereof Download PDFInfo
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- CN111678050A CN111678050A CN202010415383.4A CN202010415383A CN111678050A CN 111678050 A CN111678050 A CN 111678050A CN 202010415383 A CN202010415383 A CN 202010415383A CN 111678050 A CN111678050 A CN 111678050A
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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
- F17D5/005—Protection or supervision of installations of gas pipelines, e.g. alarm
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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
Abstract
The invention relates to a natural gas pipeline leakage detection method, a natural gas pipeline leakage detection system, a terminal and a storage medium thereof, which solve the problems of low natural gas pipeline leakage detection efficiency, time consumption and labor consumption, and comprise the steps of acquiring two detection nodes selected on a pipeline and needing to be detected; acquiring flow detection information of corresponding positions according to the positions of the two detection nodes; taking the difference value of the two pieces of flow detection information as judgment information; comparing the judgment information with preset flow threshold information, and if the numerical value corresponding to the judgment information is larger than the numerical value corresponding to the flow threshold information, forming leakage information; and if the numerical value corresponding to the judgment information is less than or equal to the numerical value corresponding to the flow threshold information, forming normal information. The invention can judge whether the natural gas pipeline leaks or not through the corresponding big data analysis, thereby greatly reducing the manpower and material resources in the detection process and simultaneously improving the detection efficiency.
Description
Technical Field
The invention relates to the technical field of gas pipeline leakage detection, in particular to a natural gas pipeline leakage detection method, a natural gas pipeline leakage detection system, a natural gas pipeline leakage detection terminal and a storage medium of the natural gas pipeline leakage detection terminal.
Background
At present, natural gas is widely applied to daily production activities of people as a high-quality, high-efficiency and clean energy source. Pipeline transportation is generally adopted in the natural gas transmission and distribution process, pipeline accidents frequently occur due to construction defects, corrosion, artificial damage and the like along with the increase of pipelines and the increase of the age of pipelines, and once leakage occurs, huge dangers are brought to the lives and properties of the nation and people due to the dangerousness and pollution of the transported substances.
A natural gas pipeline system as disclosed in application No. 201911057581.1; the device comprises a plurality of first pipelines, wherein a closed box is arranged among the first pipelines, a second pipeline is sleeved on the outer side wall of each first pipeline and forms a second detection cavity, a plurality of sealing sliding rings are arranged at the second detection cavity of each first pipeline, and a transparent observation strip is arranged along the length direction of each second pipeline; and a pressure sensor and an alarm connected with the pressure sensor are arranged in the closed box.
Above-mentioned prior art scheme can realize detecting the judgement whether leaking gas to natural gas line, but in the testing process, still need artificial one section to detect on the spot, if a staff detects whole pipeline, then the time that needs expend is more, if a plurality of staff detect whole pipeline simultaneously, though can save time, comparatively extravagant manpower and materials, so certain space of improving has.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the natural gas pipeline leakage detection method which can analyze whether leakage occurs or not through big data, improve the detection efficiency and reduce manpower and material resources.
The above object of the present invention is achieved by the following technical solutions:
a natural gas pipeline leak detection method, comprising:
acquiring two detection nodes which are selected on a pipeline and need to be detected;
acquiring flow detection information of corresponding positions according to the positions of the two detection nodes;
taking the difference value of the two pieces of flow detection information as judgment information;
comparing the judgment information with preset flow threshold information, and if the numerical value corresponding to the judgment information is larger than the numerical value corresponding to the flow threshold information, forming leakage information; and if the numerical value corresponding to the judgment information is less than or equal to the numerical value corresponding to the flow threshold information, forming normal information.
By adopting the technical scheme, the flow detection information is obtained according to the two selected detection nodes needing to be detected, and whether leakage occurs is judged based on the difference condition of the two flow detection information; if the leakage does not exist, the flow detection information of the two detection nodes does not have great difference in general and only has some slight floating changes; and once the flow detection information of the two detection nodes is greatly different, the situation that leakage may occur between the two detection nodes is described, so that corresponding leakage information needs to be formed for feedback, and unnecessary risks caused by leakage but unknown are avoided.
The present invention in a preferred example may be further configured to: after the two detection nodes are obtained, the distance between the two detection nodes is analyzed, and the specific method comprises the following steps:
acquiring distance information between two detection nodes;
and comparing the distance information with preset distance threshold information, and if the value corresponding to the distance information is smaller than the value corresponding to the distance threshold information, taking the difference value of the two pieces of flow detection information corresponding to the two selected detection nodes as judgment information to judge whether leakage exists.
By adopting the technical scheme, if the distance between the two detection nodes is large, the corresponding leakage point cannot be quickly positioned, so that the distance between the two selected detection nodes is analyzed and judged, and if the distance between the two detection nodes is smaller than the preset distance, whether leakage occurs between the two detection nodes is directly judged.
The present invention in a preferred example may be further configured to: if the numerical value corresponding to the distance information is larger than the numerical value corresponding to the distance threshold information, acquiring other detection nodes which are positioned on the pipeline and between the two selected detection nodes;
judging whether other detection nodes exist between the two selected detection nodes;
if no other detection node exists between the two selected detection nodes, the difference value of the two flow detection information corresponding to the two selected detection nodes is used as judgment information to judge whether leakage exists;
if at least one other detection node exists between the two selected detection nodes; and acquiring the traffic detection information corresponding to other detection nodes, and sequentially taking the difference value of the two traffic detection information corresponding to the two adjacent detection nodes as judgment information to judge whether leakage exists.
By adopting the technical scheme, once the distance between two detection nodes is greater than the preset distance, whether other detection nodes exist between the two detection nodes needs to be judged, and if no other detection nodes exist, the flow detection information of the two selected detection nodes is directly analyzed to judge whether leakage occurs; if other detection nodes exist, analyzing and judging the flow detection information of every two adjacent detection nodes, and determining the leakage position by analyzing the leakage condition between the two detection nodes.
The present invention in a preferred example may be further configured to: in the process of judging whether leakage occurs or not, if the difference value of two pieces of flow detection information corresponding to two detection nodes is larger than the numerical value corresponding to the flow threshold information, marking the two adjacent detection nodes to leak the marking information.
By adopting the technical scheme, the two detection nodes with leakage conditions are marked so as to be convenient for subsequent calling.
The present invention in a preferred example may be further configured to: calling leakage position information of a position corresponding to the marked detection node according to the leakage marking information;
forming a search area by using the leakage position information as a central point and a preset diameter;
acquiring personnel positioning information of maintenance personnel;
judging whether the personnel positioning information is located in the search area;
if no personnel positioning information exists in the search area, expanding the corresponding diameter to update the corresponding search area, and judging whether the personnel positioning information exists in the search area until the personnel positioning information exists in the search area again;
if a person positioning information exists in the search area, sending maintenance task information to a person corresponding to the person positioning information;
and if at least two pieces of personnel positioning information exist in the search area, sending maintenance task information on the principle of near according to the distances between the plurality of pieces of personnel positioning information and the leakage position information.
By adopting the technical scheme, relevant maintenance personnel are directly distributed after leakage mark information is formed; in the distribution process, acquiring personnel positioning information of maintenance personnel, realizing distribution according to whether the personnel positioning information is positioned in a search area, and if no maintenance personnel exist in the search area, enlarging the diameter of the search area and judging and analyzing again; if a maintenance person exists in the search area, directly assigning maintenance task information to the maintenance person; if the search area has a plurality of maintenance personnel, the maintenance task information is assigned to the corresponding maintenance personnel according to the principle of proximity.
The present invention in a preferred example may be further configured to: acquiring repair information of designated maintenance personnel;
according to the repair information, the difference value of two pieces of flow detection information of two adjacent detection nodes corresponding to the leakage marking information is used as judgment information to judge whether leakage exists or not;
if the numerical value corresponding to the judgment information is larger than the numerical value corresponding to the flow threshold value information, leakage information is still formed and fed back to designated maintenance personnel;
and if the numerical value corresponding to the judgment information is less than or equal to the numerical value corresponding to the flow threshold information, deleting the leakage marking information.
By adopting the technical scheme, the corresponding repair information is fed back after the maintenance personnel finish the maintenance, the secondary detection and judgment are carried out according to the repair information, and if the leakage is judged to still be leaked, the leakage information is continuously fed back to the corresponding maintenance personnel; if it is judged that the leakage has not occurred any more, the leakage flag information is directly deleted.
The present invention in a preferred example may be further configured to: if the numerical value corresponding to the judgment information is larger than the numerical value corresponding to the flow threshold information, further judging whether the judgment is misjudgment, wherein the specific method comprises the following steps:
judging whether an air outlet node exists between two detection nodes which correspondingly form judgment information;
if the air outlet node does not exist, leakage information is formed;
if at least one air outlet node exists, acquiring flow detection information corresponding to the air outlet node; analyzing according to the flow detection information corresponding to all the air outlet nodes and the flow detection information corresponding to the two detection nodes forming the judgment information to judge whether air leakage occurs or not;
sequentially defining two detection nodes forming judgment information as a front detection node and a rear detection node according to the natural gas transmission direction;
sequentially subtracting the flow detection information corresponding to all the air outlet nodes and the flow detection information corresponding to the rear detection node from the flow detection information corresponding to the front detection node to form checking information;
if the numerical value corresponding to the checking information is larger than the numerical value corresponding to the flow threshold information, leakage information is formed; and if the numerical value corresponding to the checking information is less than or equal to the numerical value corresponding to the flow threshold information, forming normal information.
By adopting the technical scheme, an air outlet node may exist between two detection nodes in the urban natural gas pipeline, and if the air outlet node is in an open state, the flow detection information of the two detection nodes is greatly changed; therefore, whether the air outlet node exists between the two detection nodes is judged, and the risk of misjudgment is reduced; in the judging process, if the number corresponding to the checking information is larger than the flow threshold, the leakage condition is possibly generated; otherwise, it is indicated that the large change of the flow detection information of the two detection nodes is caused by the fact that the air outlet node is in the open state.
The invention also aims to provide a natural gas pipeline leakage detection system which can analyze whether leakage occurs or not through big data, improve the detection efficiency and reduce manpower and material resources.
The second aim of the invention is realized by the following technical scheme:
a natural gas pipeline leakage detection system comprises a gas pipeline,
a node acquisition module: acquiring two detection nodes which are selected on a pipeline and need to be detected;
a flow acquisition module: acquiring flow detection information of corresponding positions according to the positions of the two detection nodes; and the number of the first and second groups,
a judgment analysis module: taking the difference value of the two pieces of flow detection information as judgment information;
comparing the judgment information with preset flow threshold information, and if the numerical value corresponding to the judgment information is larger than the numerical value corresponding to the flow threshold information, forming leakage information; and if the numerical value corresponding to the judgment information is less than or equal to the numerical value corresponding to the flow threshold information, forming normal information.
The third purpose of the invention is to provide a computer readable storage medium, which can store corresponding programs, is convenient for analyzing whether leakage occurs through big data, improves the detection efficiency and reduces manpower and material resources.
The third object of the invention is realized by the following technical scheme:
a computer readable storage medium comprising a program which is capable of being loaded and executed by a processor to implement a natural gas pipeline leak detection method as described above.
The invention aims to provide the intelligent terminal which can analyze whether leakage occurs or not through big data, improve the detection efficiency and reduce manpower and material resources.
The fourth object of the invention is realized by the following technical scheme:
an intelligent terminal comprises a memory, a processor and a program stored on the memory and capable of running on the processor, wherein the program can be loaded and executed by the processor to realize the natural gas pipeline leakage detection method.
In summary, the invention has the following beneficial technical effects: whether the natural gas pipeline leaks can be judged through corresponding big data analysis, manpower and material resources in the detection process are greatly reduced, and the detection efficiency is improved.
Drawings
FIG. 1 is a schematic flow diagram of a natural gas pipeline leak detection method.
Fig. 2 is a flow chart diagram of a method for rapidly locating a leak location.
Fig. 3 is a flowchart illustrating a specific maintenance task assignment method.
Fig. 4 is a flowchart illustrating a method for rechecking a specific maintenance task.
Fig. 5 is a flowchart illustrating a further determination of whether the determination is an erroneous determination.
Fig. 6 is a schematic structural diagram of a natural gas pipeline leak detection system.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
The embodiment of the invention provides a natural gas pipeline leakage detection method, which comprises the following steps: acquiring two detection nodes which are selected on a pipeline and need to be detected; acquiring flow detection information of corresponding positions according to the positions of the two detection nodes; taking the difference value of the two pieces of flow detection information as judgment information; comparing the judgment information with preset flow threshold information, and if the numerical value corresponding to the judgment information is larger than the numerical value corresponding to the flow threshold information, forming leakage information; and if the numerical value corresponding to the judgment information is less than or equal to the numerical value corresponding to the flow threshold information, forming normal information.
In the embodiment of the invention, the flow detection information is obtained according to the two selected detection nodes needing to be detected, and whether leakage occurs is judged based on the difference condition of the two flow detection information; if the leakage does not exist, the flow detection information of the two detection nodes does not have great difference in general and only has some slight floating changes; and once the flow detection information of the two detection nodes is greatly different, the situation that leakage may occur between the two detection nodes is described, so that corresponding leakage information needs to be formed for feedback, and unnecessary risks caused by leakage but unknown are avoided.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. 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.
In addition, the term "and/or" herein is only one kind of association relationship describing an associated object, and means that there may be three kinds of relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship, unless otherwise specified.
The embodiments of the present invention will be described in further detail with reference to the drawings attached hereto.
The embodiment of the invention provides a natural gas pipeline leakage detection method, and the main flow of the method is described as follows.
As shown in fig. 1:
step 1000: and acquiring two detection nodes which are selected on the pipeline and need to be detected.
The natural gas pipeline is preset with a plurality of detection nodes, and the detection nodes can be uniformly distributed on the natural gas pipeline; the detection nodes can also be unevenly distributed on the natural gas pipeline, namely, the detection nodes are arranged according to actual requirements. In the process of selecting two detection nodes, the two detection nodes can be selected manually, or the two detection nodes can be selected randomly by a system or according to a set rule; if the detection node is manually selected, manually triggering a corresponding button to acquire two corresponding detection nodes, wherein the triggered button can be a mechanical button or a virtual button on a touch screen; if the system selects the detection node, the detection node selected by the system can be directly obtained.
Step 2000: and acquiring the flow detection information of the corresponding position according to the positions of the two detection nodes.
The method comprises the steps that a plurality of detection nodes are preset on a natural gas pipeline, each detection node is provided with a flow sensor, and the flow sensors are used for acquiring flow detection information of the detection nodes at the current positions.
Step 3000: taking the difference value of the two pieces of flow detection information as judgment information; and comparing the judgment information with preset flow threshold information.
The method for judging whether leakage occurs is judged based on a flow balance method, namely flow detection information at two detection nodes of a pipeline is analyzed and judged by utilizing the principle that fluid is transmitted in the pipeline and flows in and out; if the difference exists between the numbers corresponding to the two pieces of flow detection information, the leakage of the pipeline can be judged to possibly occur; to avoid the effects of some interference, traffic threshold information is set for comparison.
Step 4100: and if the numerical value corresponding to the judgment information is larger than the numerical value corresponding to the flow threshold information, leakage information is formed.
Step 4200: and if the numerical value corresponding to the judgment information is less than or equal to the numerical value corresponding to the flow threshold information, forming normal information.
If there is no leakage, the traffic detection information of the two detection nodes will not have a large difference and will only have some slight floating changes in general; and once the flow detection information of the two detection nodes is greatly different, the situation that leakage may occur between the two detection nodes is described, so that corresponding leakage information needs to be formed for feedback, and unnecessary risks caused by leakage but unknown are avoided.
In the process of laying pipelines of urban natural gas, the lengths of partial pipelines are relatively long, so that the positions where leakage occurs can be quickly located, the distance between two detection nodes is analyzed after the two detection nodes are obtained, once the distance between the two detection nodes is large, further analysis and judgment are carried out, the step can be independently carried out or can be carried out after the step 1000, and adjustment and setting can be carried out according to actual conditions; as shown in fig. 2, the method specifically related to the fast location of the leak is as follows:
step 5100: and acquiring distance information between the two detection nodes.
Each detection node is a preset position, so that the distance between two adjacent detection nodes is stored in a corresponding database in advance, namely the distance between the two detection nodes can be obtained through accumulation calculation according to the two selected detection nodes.
Step 5200: the distance information is compared with preset distance threshold information.
Wherein, the distance area information can be set according to the actual situation. Whether the distance between the two selected detection nodes is too long or not is judged by comparing the distance information with the distance threshold value information, and the situation that the specific leakage position is not easy to know due to the fact that the distance between the two detection nodes is too long is avoided.
Step 5310: and if the value corresponding to the distance information is smaller than the value corresponding to the distance threshold information, taking the difference value of the two pieces of flow detection information corresponding to the two selected detection nodes as judgment information to judge whether the leakage exists.
The distance between the two detection nodes is smaller than the preset distance, which indicates that the distance between the two detection nodes is smaller, so that whether leakage occurs between the two detection nodes can be directly judged.
Step 5320: and if the numerical value corresponding to the distance information is larger than the numerical value corresponding to the distance threshold information, acquiring other detection nodes on the pipeline and between the two selected detection nodes.
If the distance between the two detection nodes is greater than the preset distance, the distance between the two detection nodes is larger, and the corresponding leakage point cannot be quickly located, so that whether other detection nodes exist between the two selected detection nodes is analyzed and judged.
Step 5321: and judging whether other detection nodes exist between the two selected detection nodes.
Step 5322: and if no other detection node exists between the two selected detection nodes, taking the difference value of the two pieces of flow detection information corresponding to the two selected detection nodes as judgment information to judge whether leakage exists.
Step 5323: if at least one other detection node exists between the two selected detection nodes; and acquiring the traffic detection information corresponding to other detection nodes, and sequentially taking the difference value of the two traffic detection information corresponding to the two adjacent detection nodes as judgment information to judge whether leakage exists.
The method comprises the steps that once the distance between two detection nodes is larger than a preset distance, whether other detection nodes exist between the two detection nodes needs to be judged, and if the other detection nodes do not exist, the flow detection information of the two selected detection nodes is directly analyzed to judge whether leakage occurs; if other detection nodes exist, analyzing and judging the flow detection information of every two adjacent detection nodes, and determining the leakage position by analyzing the leakage condition between the two detection nodes. As for the method for determining whether leakage occurs, the determination methods in step 3000, step 4100 and step 4200 may be directly adopted, that is, the difference between two pieces of traffic detection information corresponding to two detection nodes is used as determination information, and the determination information is compared with the traffic threshold information; if the numerical value corresponding to the judgment information is larger than the numerical value corresponding to the flow threshold information, leakage information is formed; and if the numerical value corresponding to the judgment information is less than or equal to the numerical value corresponding to the flow threshold information, forming normal information.
Once a leakage occurs, maintenance needs to be performed as soon as possible, so that a corresponding maintenance person needs to be allocated to a position where the leakage occurs, as shown in fig. 3, a specific maintenance task allocation method is as follows:
step 6100: in the process of judging whether leakage occurs or not, if the difference value of two pieces of flow detection information corresponding to two detection nodes is larger than the numerical value corresponding to the flow threshold information, marking the two adjacent detection nodes to leak the marking information.
The marking mode can adopt a color changing mode, and can also adopt a mode of highlighting and displaying two detection nodes needing to be marked, such as thickening and displaying; after the mark is finished, the staff can be reminded to process, and meanwhile, follow-up calling is facilitated.
Step 6200: and calling leakage position information of the position corresponding to the marked detection node according to the leakage mark information.
The position of each detection node is pre-stored in the corresponding database, so that the position corresponding to the marked detection node can be called according to the marked detection node corresponding to the leakage marking information, and the position is defined as the leakage position information.
Step 6300: forming a search area by using the leakage position information as a central point and a preset diameter.
In order to quickly execute the maintenance task, the position corresponding to the leakage position information is used as a central point to search for the maintenance personnel, the maintenance personnel can be ensured to reach the position corresponding to the leakage position information in time, and the diameter corresponding to the search area can be set according to the actual situation.
Step 6400: and acquiring personnel positioning information of maintenance personnel.
The maintenance personnel have a mobile terminal, which can be a portable terminal such as a mobile phone and a tablet personal computer, and the portable terminal is loaded with corresponding software so as to realize functions of receiving maintenance tasks, feeding back maintenance results and the like; the portable terminal has a GPS positioning element by which the person positioning information of the corresponding person is acquired.
Step 6500: and judging whether the personnel positioning information is positioned in the searching area.
Step 6510: if no personnel positioning information exists in the search area, the corresponding diameter is enlarged to update the corresponding search area, and whether the personnel positioning information exists in the search area is judged again until the personnel positioning information exists in the search area.
Step 6520: and if the personnel positioning information exists in the search area, sending maintenance task information to personnel corresponding to the personnel positioning information.
Step 6530: and if at least two pieces of personnel positioning information exist in the search area, sending maintenance task information on the principle of near according to the distances between the plurality of pieces of personnel positioning information and the leakage position information.
Wherein, directly distributing related maintenance personnel after forming leakage mark information; in the distribution process, acquiring personnel positioning information of maintenance personnel, realizing distribution according to whether the personnel positioning information is positioned in a search area, and if no maintenance personnel exist in the search area, enlarging the diameter of the search area and judging and analyzing again; if a maintenance person exists in the search area, directly assigning maintenance task information to the maintenance person; if the search area has a plurality of maintenance personnel, the maintenance task information is assigned to the corresponding maintenance personnel according to the principle of proximity.
After the maintenance is completed, the position where the leakage occurs is detected again to ensure that the maintenance task is completed satisfactorily, as shown in fig. 4, the specific method for rechecking the maintenance task is as follows:
step 7100: and acquiring the repair information of the designated maintenance personnel.
The maintenance personnel have a mobile terminal through which relevant repair information can be fed back, and the feedback process can be fed back in a mechanical key triggering mode or a virtual key triggering mode.
Step 7200: and according to the repair information, the difference value of the two pieces of flow detection information of the two adjacent detection nodes corresponding to the leakage marking information is used as judgment information to judge whether leakage exists.
Step 7310: and if the numerical value corresponding to the judgment information is larger than the numerical value corresponding to the flow threshold information, forming the still leakage information and feeding the still leakage information back to the designated maintenance personnel.
Step 7320: and if the numerical value corresponding to the judgment information is less than or equal to the numerical value corresponding to the flow threshold information, deleting the leakage marking information.
After the maintenance personnel finish the maintenance, feeding back corresponding repair information, carrying out detection judgment again according to the repair information, and if the repair information is judged to be still leakage, continuously feeding back the leakage information to the corresponding maintenance personnel; if it is judged that the leakage has not occurred any more, the leakage flag information is directly deleted.
In an urban natural gas pipeline, an air outlet node may exist between two detection nodes, and if the air outlet node is in an open state, the flow detection information of the two detection nodes is greatly changed; therefore, whether the air outlet node exists between the two detection nodes is judged, and the risk of misjudgment is reduced; the specific misjudgment detection method comprises the following steps:
if the value corresponding to the determination information is greater than the value corresponding to the flow threshold information, further determining whether the determination is a false determination, as shown in fig. 5, the specific method is as follows:
step 8100: and judging whether an air outlet node exists between the two detection nodes which correspondingly form the judgment information.
The natural gas pipeline is preset with a plurality of gas outlet nodes, and the gas outlet nodes are positions for accessing users; the position corresponding to each air outlet node is stored in a corresponding database so as to be called later; in the process of judging whether the air outlet node exists between the two detection nodes, the data in the database is directly called to obtain the result.
Step 8200: and if the air outlet node does not exist, leakage information is formed.
Step 8300: and if at least one air outlet node exists, acquiring flow detection information corresponding to the air outlet node.
Step 8400: and analyzing according to the flow detection information corresponding to all the air outlet nodes and the flow detection information corresponding to the two detection nodes forming the judgment information to judge whether air leakage occurs or not.
Step 8500: sequentially defining two detection nodes forming judgment information as a front detection node and a rear detection node according to the natural gas transmission direction; and sequentially subtracting the flow detection information corresponding to all the air outlet nodes and the flow detection information corresponding to the rear detection node from the flow detection information corresponding to the front detection node to form verification information.
Step 8600: and if the numerical value corresponding to the checking information is larger than the numerical value corresponding to the flow threshold information, forming leakage information.
Step 8700: and if the numerical value corresponding to the checking information is less than or equal to the numerical value corresponding to the flow threshold information, forming normal information.
If the air outlet node does not exist, the condition that the numerical value corresponding to the judgment information is larger than the numerical value corresponding to the flow threshold information is caused by leakage, and temporary large-amplitude change is not caused by user use; if the air outlet node exists, the flow of all the air outlet nodes and the flow of the rear detection node are sequentially subtracted from the flow of the front detection node, the calculation result is used as checking information, and if the number corresponding to the checking information is larger than the flow threshold value, the leakage condition is possibly caused; otherwise, it is indicated that the large change of the flow detection information of the two detection nodes is caused by the fact that the air outlet node is in the open state.
Embodiments of the present invention provide a computer-readable storage medium including instructions that, when loaded and executed by a processor, implement the methods of fig. 1-5. The individual steps described in the flow.
The computer-readable storage medium includes, for example: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
Based on the same inventive concept, an embodiment of the present invention provides an intelligent terminal, which includes a memory, a processor, and a program stored in the memory and executable on the processor, where the program is capable of being loaded and executed by the processor to implement fig. 1 to 5. The natural gas pipeline leakage detection method in the flow.
Based on the same inventive concept, as shown in fig. 6, an embodiment of the invention provides a natural gas pipeline leakage detection system, which can analyze whether leakage occurs through big data, improve detection efficiency, and reduce manpower and material resources; the system comprises an intelligent terminal and a mobile terminal, wherein the intelligent terminal is used for analyzing whether the natural gas pipeline leaks, and the mobile terminal is used for receiving maintenance tasks, feeding back maintenance results, acquiring personnel positioning information and the like.
This intelligent terminal includes:
the node acquisition module is used for acquiring a detection node and an air outlet node on the pipeline;
the flow acquisition module is used for acquiring flow detection information of a corresponding position according to the position of the detection node or the air outlet node;
the distance acquisition module is used for acquiring distance information between the two detection nodes;
the marking module is used for marking the detection nodes with leakage;
a judgment analysis module comprising:
a distance determination unit: the distance between the two detection nodes is judged;
comparing the distance information with preset distance threshold information, and if the value corresponding to the distance information is smaller than the value corresponding to the distance threshold information, taking the difference value of two pieces of flow detection information corresponding to the selected two detection nodes as judgment information to judge whether leakage exists;
a leakage determination unit: used for judging whether leakage occurs or not;
the function of the first flow detection device is to take the difference value of the two flow detection information as judgment information; comparing the judgment information with preset flow threshold information, and if the numerical value corresponding to the judgment information is larger than the numerical value corresponding to the flow threshold information, forming leakage information; if the numerical value corresponding to the information is judged to be less than or equal to the numerical value corresponding to the flow threshold information, normal information is formed;
the second function is to judge whether other detection nodes exist between the two selected detection nodes; if no other detection node exists between the two selected detection nodes, the difference value of the two flow detection information corresponding to the two selected detection nodes is used as judgment information to judge whether leakage exists; if at least one other detection node exists between the two selected detection nodes; acquiring flow detection information corresponding to other detection nodes, and taking the difference value of two flow detection information corresponding to two adjacent detection nodes as judgment information to judge whether leakage exists or not;
thirdly, if the numerical value corresponding to the judgment information is larger than the numerical value corresponding to the flow threshold information, further judging whether the judgment is wrong; specifically, judging whether an air outlet node exists between two detection nodes which correspondingly form judgment information; if the air outlet node does not exist, leakage information is formed; if at least one air outlet node exists, acquiring flow detection information corresponding to the air outlet node; analyzing according to the flow detection information corresponding to all the air outlet nodes and the flow detection information corresponding to the two detection nodes forming the judgment information to judge whether air leakage occurs or not; sequentially defining two detection nodes forming judgment information as a front detection node and a rear detection node according to the natural gas transmission direction; sequentially subtracting the flow detection information corresponding to all the air outlet nodes and the flow detection information corresponding to the rear detection node from the flow detection information corresponding to the front detection node to form checking information; if the numerical value corresponding to the checking information is larger than the numerical value corresponding to the flow threshold information, leakage information is formed; if the value corresponding to the check information is less than or equal to the value corresponding to the flow threshold information, normal information is formed;
a maintenance task allocation module: for assigning corresponding maintenance tasks;
calling leakage position information of a position corresponding to the marked detection node according to the leakage marking information; forming a search area by using the leakage position information as a central point and a preset diameter; acquiring personnel positioning information of maintenance personnel; judging whether the personnel positioning information is located in the search area; if no personnel positioning information exists in the search area, expanding the corresponding diameter to update the corresponding search area, and judging whether the personnel positioning information exists in the search area until the personnel positioning information exists in the search area again; if a person positioning information exists in the search area, sending maintenance task information to a person corresponding to the person positioning information; if at least two pieces of personnel positioning information exist in the search area, sending maintenance task information according to the principle of proximity between the plurality of pieces of personnel positioning information and the leakage position information; and the number of the first and second groups,
a maintenance task rechecking module: rechecking whether the leakage is no longer leaked according to the repair information fed back by the maintenance personnel;
according to the repair information, the difference value of two pieces of flow detection information of two adjacent detection nodes corresponding to the leakage marking information is used as judgment information to judge whether leakage exists or not; if the numerical value corresponding to the judgment information is larger than the numerical value corresponding to the flow threshold value information, leakage information is still formed and fed back to designated maintenance personnel; if the numerical value corresponding to the judgment information is less than or equal to the numerical value corresponding to the flow threshold information, deleting the leakage mark information
This remove end includes:
the positioning acquisition module is used for acquiring the position of a maintenance worker;
the maintenance task receiving module is used for receiving the maintenance task;
the rechecking application module is used for acquiring repair information according to the triggering of the maintenance personnel, wherein the repair information corresponds to the completed maintenance task; and the number of the first and second groups,
and the data sending module is used for feeding back information to be sent to the intelligent terminal.
The above embodiments are only used to describe the technical solutions of the present application in detail, but the above embodiments are only used to help understanding the method and the core idea of the present invention, and should not be construed as limiting the present invention. Those skilled in the art should also appreciate that they can easily conceive of various changes and substitutions within the technical scope of the present disclosure.
Claims (10)
1. A natural gas pipeline leakage detection method is characterized by comprising the following steps:
acquiring two detection nodes which are selected on a pipeline and need to be detected;
acquiring flow detection information of corresponding positions according to the positions of the two detection nodes;
taking the difference value of the two pieces of flow detection information as judgment information;
comparing the judgment information with preset flow threshold information, and if the numerical value corresponding to the judgment information is larger than the numerical value corresponding to the flow threshold information, forming leakage information; and if the numerical value corresponding to the judgment information is less than or equal to the numerical value corresponding to the flow threshold information, forming normal information.
2. The natural gas pipeline leak detection method according to claim 1, wherein the distance between the two detection nodes is analyzed after the two detection nodes are obtained, and the method is as follows:
acquiring distance information between two detection nodes;
and comparing the distance information with preset distance threshold information, and if the value corresponding to the distance information is smaller than the value corresponding to the distance threshold information, taking the difference value of the two pieces of flow detection information corresponding to the two selected detection nodes as judgment information to judge whether leakage exists.
3. The natural gas pipeline leak detection method according to claim 2, characterized in that:
if the numerical value corresponding to the distance information is larger than the numerical value corresponding to the distance threshold information, acquiring other detection nodes which are positioned on the pipeline and between the two selected detection nodes;
judging whether other detection nodes exist between the two selected detection nodes;
if no other detection node exists between the two selected detection nodes, the difference value of the two flow detection information corresponding to the two selected detection nodes is used as judgment information to judge whether leakage exists;
if at least one other detection node exists between the two selected detection nodes; and acquiring the traffic detection information corresponding to other detection nodes, and sequentially taking the difference value of the two traffic detection information corresponding to the two adjacent detection nodes as judgment information to judge whether leakage exists.
4. The natural gas pipeline leak detection method according to claim 1, characterized by: in the process of judging whether leakage occurs or not, if the difference value of two pieces of flow detection information corresponding to two detection nodes is larger than the numerical value corresponding to the flow threshold information, marking the two adjacent detection nodes to leak the marking information.
5. The natural gas pipeline leak detection method according to claim 4, characterized in that:
calling leakage position information of a position corresponding to the marked detection node according to the leakage marking information;
forming a search area by using the leakage position information as a central point and a preset diameter;
acquiring personnel positioning information of maintenance personnel;
judging whether the personnel positioning information is located in the search area;
if no personnel positioning information exists in the search area, expanding the corresponding diameter to update the corresponding search area, and judging whether the personnel positioning information exists in the search area until the personnel positioning information exists in the search area again;
if a person positioning information exists in the search area, sending maintenance task information to a person corresponding to the person positioning information;
and if at least two pieces of personnel positioning information exist in the search area, sending maintenance task information on the principle of near according to the distances between the plurality of pieces of personnel positioning information and the leakage position information.
6. The natural gas pipeline leak detection method according to claim 5, characterized in that: acquiring repair information of designated maintenance personnel;
according to the repair information, the difference value of two pieces of flow detection information of two adjacent detection nodes corresponding to the leakage marking information is used as judgment information to judge whether leakage exists or not;
if the numerical value corresponding to the judgment information is larger than the numerical value corresponding to the flow threshold value information, leakage information is still formed and fed back to designated maintenance personnel;
and if the numerical value corresponding to the judgment information is less than or equal to the numerical value corresponding to the flow threshold information, deleting the leakage marking information.
7. A natural gas pipeline leak detection method according to claim 1, 2, 3, 4, 5 or 6, wherein: if the numerical value corresponding to the judgment information is larger than the numerical value corresponding to the flow threshold information, further judging whether the judgment is misjudgment, wherein the specific method comprises the following steps:
judging whether an air outlet node exists between two detection nodes which correspondingly form judgment information;
if the air outlet node does not exist, leakage information is formed;
if at least one air outlet node exists, acquiring flow detection information corresponding to the air outlet node; analyzing according to the flow detection information corresponding to all the air outlet nodes and the flow detection information corresponding to the two detection nodes forming the judgment information to judge whether air leakage occurs or not;
sequentially defining two detection nodes forming judgment information as a front detection node and a rear detection node according to the natural gas transmission direction;
sequentially subtracting the flow detection information corresponding to all the air outlet nodes and the flow detection information corresponding to the rear detection node from the flow detection information corresponding to the front detection node to form checking information;
if the numerical value corresponding to the checking information is larger than the numerical value corresponding to the flow threshold information, leakage information is formed; and if the numerical value corresponding to the checking information is less than or equal to the numerical value corresponding to the flow threshold information, forming normal information.
8. A natural gas pipeline leakage detection system is characterized by comprising,
a node acquisition module: acquiring two detection nodes which are selected on a pipeline and need to be detected;
a flow acquisition module: acquiring flow detection information of corresponding positions according to the positions of the two detection nodes; and the number of the first and second groups,
a judgment analysis module: taking the difference value of the two pieces of flow detection information as judgment information;
comparing the judgment information with preset flow threshold information, and if the numerical value corresponding to the judgment information is larger than the numerical value corresponding to the flow threshold information, forming leakage information; and if the numerical value corresponding to the judgment information is less than or equal to the numerical value corresponding to the flow threshold information, forming normal information.
9. A computer-readable storage medium storing a program which when loaded and executed by a processor implements a natural gas pipeline leak detection method according to any one of claims 1 to 7.
10. An intelligent terminal, comprising a memory, a processor and a program stored on the memory and executable on the processor, the program being capable of being loaded and executed by the processor to implement the method of detecting a natural gas pipeline leak as claimed in any one of claims 1 to 7.
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