A gas pipeline network leakage early warning system suitable for gas engineering

Abstract

The present application belongs to the technical field of gas leakage early warning, and is used to solve the problem of low accuracy of early warning results caused by the fact that the gas pipe network leakage early warning system in the prior art cannot effectively check the monitoring and early warning results, and specifically relates to a gas pipe network leakage early warning system suitable for gas engineering, which comprises a leakage monitoring module, a monitoring checking module and a positioning analysis module, and the leakage monitoring module, the monitoring checking module and the positioning analysis module are sequentially connected in communication; the leakage monitoring module is used for monitoring and analyzing the leakage of the gas pipe network of the gas engineering; the valve well of the gas pipe network of the gas engineering is marked as a monitoring object, and a monitoring terminal is arranged at the monitoring object; the gas concentration value and the pressure monitoring value of the monitoring object are obtained through the monitoring terminal; the present application can monitor and analyze the leakage of the gas pipe network of the gas engineering, and the monitoring terminal is used to collect and analyze the external and internal leakage parameters of the monitoring object.

Description

Technical Field

[0001] This invention belongs to the field of gas leak early warning technology, specifically a gas pipeline network leak early warning system applicable to gas engineering projects. Background Technology

[0002] Gas is a general term for gaseous substances that can be used by urban residents and industrial enterprises. With the continuous development of social science and technology and the resulting economic growth, the general public is paying more and more attention to their quality of life and living environment. Therefore, the widespread use of natural gas and coal gas has brought great convenience to people. At the same time, gas leaks can easily cause gas poisoning, gas explosions and other accidents.

[0003] Existing gas pipeline network leak early warning systems can only detect leaks based on a single monitoring standard. However, a single monitoring parameter is easily affected by factors such as temperature, gas source, and monitoring equipment failure. Therefore, the results of traditional gas pipeline network leak monitoring and early warning cannot be effectively verified, resulting in low accuracy of the early warning results and a high probability of false alarms.

[0004] To address the aforementioned technical problems, this application proposes a solution. Summary of the Invention

[0005] The purpose of this invention is to provide a gas pipeline network leakage early warning system suitable for gas engineering, which solves the problem of low accuracy of early warning results caused by the inability of existing gas pipeline network leakage early warning systems to effectively verify the monitoring and early warning results; The technical problem to be solved by this invention is: how to provide a gas pipeline network leakage early warning system suitable for gas engineering that can effectively verify the monitoring and early warning results.

[0006] The objective of this invention can be achieved through the following technical solutions: A gas pipeline network leak early warning system suitable for gas engineering includes a leak monitoring module, a monitoring verification module, and a location analysis module, wherein the leak monitoring module, the monitoring verification module, and the location analysis module are sequentially connected in communication. The leakage monitoring module is used to perform leakage monitoring and analysis on the gas pipeline network of the gas project: the valve wells of the gas pipeline network of the gas project are marked as monitoring objects and monitoring terminals are set up at the monitoring objects. The gas concentration value and pressure monitoring value of the monitoring objects are obtained through the monitoring terminals. The monitored gas concentration value and pressure monitoring value are compared with the preset gas concentration threshold and pressure monitoring threshold respectively, and the comparison results are used to determine whether the monitoring object has leakage characteristics, external leakage characteristics or external leakage characteristics. The monitoring and verification module is used to verify and analyze the leakage monitoring results: when the monitoring and verification module receives an internal verification signal, it performs internal verification and analysis of the gas pipeline network of the gas project; when the monitoring and verification module receives an external verification signal, it performs external verification and analysis of the gas pipeline network of the gas project. The location analysis module is used to locate and analyze the gas pipeline network leak location of the gas project after receiving the location analysis signal: the monitoring object with the highest gas concentration value and the monitoring object with the highest pressure value in the gas pipeline network are marked as external marker objects and internal marker objects, respectively, and it is determined whether the external marker objects and internal marker objects are the same monitoring object: if so, the corresponding monitoring object is marked as the leak object; if not, all monitoring objects between the external marker objects and internal marker objects are marked as calibration objects, and the monitoring terminals of the calibration objects are tested.

[0007] As a preferred embodiment of the present invention, the process of obtaining the gas concentration value and pressure monitoring value of the monitored object includes: the monitoring terminal includes a gas detection instrument and a gas pressure detection instrument. The gas detection instrument is used to monitor the gas concentration value outside the gas pipeline valve well in real time, and the gas pressure detection instrument is used to monitor the gas pressure value inside the gas pipeline in real time, obtain the gas pressure standard value, and mark the difference between the gas pressure standard value and the gas pressure value as the pressure monitoring value.

[0008] In a preferred embodiment of the present invention, the specific process of comparing the monitored gas concentration value and pressure monitoring value with preset gas concentration threshold and pressure monitoring threshold respectively includes: if the gas concentration value is less than the gas concentration threshold and the pressure monitoring value is less than the pressure monitoring threshold, then it is determined that the monitored object does not have leakage characteristics; if the gas concentration value is greater than or equal to the gas concentration threshold and the pressure monitoring value is less than the pressure monitoring threshold, then it is determined that the monitored object has external leakage characteristics, an internal verification signal is generated and sent to the monitoring verification module; if the gas concentration value is less than the gas concentration threshold and the pressure monitoring value is greater than or equal to the pressure monitoring threshold, then it is determined that the monitored object has internal leakage characteristics, an external verification signal is generated and sent to the monitoring verification module; if the gas concentration value is greater than or equal to the gas concentration threshold and the pressure monitoring value is greater than or equal to the pressure monitoring threshold, then it is determined that the monitored object has a leakage condition, a leakage warning signal is generated and sent to the mobile terminal of the management personnel.

[0009] As a preferred embodiment of the present invention, the specific process of the monitoring and verification module performing internal verification analysis on the gas pipeline network of the gas engineering project includes: marking the monitoring objects with external leakage characteristics as analysis objects; marking the analysis objects and the L1 monitoring objects thereafter as internal verification objects; arranging the internal verification objects according to the gas transmission direction to obtain an internal verification sequence; arranging the internal verification objects according to the pressure monitoring values ​​from large to small to obtain a pressure monitoring sequence; marking the absolute value of the difference between the sequence number of the internal verification object in the internal verification sequence and the pressure monitoring sequence as the internal verification value of the internal verification object; summing and averaging the internal verification values ​​of all internal verification objects to obtain the internal verification coefficient; comparing the internal verification coefficient with the preset internal verification threshold and determining whether the gas pipeline network has a leakage condition based on the comparison result.

[0010] As a preferred embodiment of the present invention, the specific process of comparing the internal verification coefficient with the preset internal verification threshold includes: if the internal verification coefficient is less than the internal verification threshold, it is determined that the gas pipeline network has a leakage condition, a location analysis signal is generated and sent to the location analysis module; if the internal verification coefficient is greater than or equal to the internal verification threshold, it is determined that the gas pipeline network has no leakage condition, an abnormal concentration investigation signal is generated and sent to the mobile terminal of the management personnel.

[0011] As a preferred embodiment of the present invention, the specific process of the monitoring and verification module performing external verification analysis on the gas pipeline network of the gas engineering project includes: marking the monitoring objects with internal leakage characteristics as analysis objects; marking the analysis objects and the L1 monitoring objects thereafter as external verification objects; arranging the external verification objects according to the gas delivery direction to obtain an external verification sequence; arranging the external verification objects in descending order of gas concentration value to obtain a gas concentration sequence; marking the absolute value of the difference between the sequence number of the external verification object in the external verification sequence and the gas concentration sequence as the external verification value of the external verification object; summing and averaging the external verification values ​​of all external verification objects to obtain the external verification coefficient; comparing the external verification coefficient with a preset external verification threshold and determining whether a leakage condition has occurred in the gas pipeline network based on the comparison result.

[0012] As a preferred embodiment of the present invention, the specific process of comparing the external verification coefficient with the preset external verification threshold includes: if the external verification coefficient is less than the external verification threshold, it is determined that a gas pipeline network has a leakage condition, a location analysis signal is generated and sent to the location analysis module; if the external verification coefficient is greater than or equal to the external verification threshold, it is determined that no gas pipeline network has a leakage condition, a gas pressure anomaly investigation signal is generated and sent to the mobile terminal of the management personnel.

[0013] As a preferred embodiment of the present invention, the working method of the gas pipeline network leakage early warning system applicable to gas engineering includes the following steps: Step 1: Conduct leak monitoring and analysis on the gas pipeline network of the gas project: Mark the valve wells of the gas pipeline network of the gas project as monitoring objects and set up monitoring terminals at the monitoring objects; compare the monitored gas concentration value and pressure monitoring value with the preset gas concentration threshold and pressure monitoring threshold respectively, and determine whether the monitoring object has leakage characteristics based on the comparison results; Step Two: Conduct internal or external verification analysis of the gas pipeline network of the gas project, and proceed to Step Three if a leak is detected in the gas pipeline network. Step 3: Locate and analyze the gas pipeline network leak in the gas engineering project, and mark the leaking object or calibration object through the location analysis.

[0014] The present invention has the following beneficial effects: The leak monitoring module can be used to monitor and analyze leaks in gas pipeline networks of gas engineering projects. The monitoring terminal can simultaneously collect and analyze the external and internal leak parameters of the monitored object, thereby monitoring the external and internal leak characteristics of the monitored object in parallel. When the monitored object only meets a single leak characteristic, the monitoring results can be verified to improve the accuracy of leak monitoring and early warning results of gas pipeline networks. The monitoring and verification module can verify and analyze the leakage monitoring results. By comparing the gas delivery direction in the gas pipeline network with the leakage parameter characteristics, internal or external verification coefficients can be obtained. The internal or external verification coefficients can then be used to determine whether an actual leakage condition has occurred in the gas pipeline network, thereby further improving the accuracy of the leakage monitoring and early warning results. The location analysis module can combine leak monitoring results with verification analysis results to locate and investigate the leak location in the gas pipeline network. Based on the location analysis results, the monitoring accuracy of the monitoring equipment can be evaluated, and timely maintenance and calibration can be carried out when abnormal operation of the monitoring equipment occurs. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a system block diagram of Embodiment 1 of the present invention; Figure 2 This is a flowchart of the method in Embodiment 2 of the present invention. Detailed Implementation

[0017] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] It should be understood that, when used in this specification and the appended claims, the term "comprising" indicates the presence of a described feature, integral, step, operation, element, and / or component, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or collections thereof. It should also be understood that, as used in this specification and the appended claims, the term "and / or" refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0019] Example 1, as Figure 1 As shown, a gas pipeline network leakage early warning system suitable for gas engineering includes a leakage monitoring module, a monitoring verification module, and a location analysis module, which are sequentially connected in communication.

[0020] The leak monitoring module is used to monitor and analyze leaks in gas pipeline networks of gas engineering projects. It marks the valve wells of the gas pipeline network as monitoring targets and installs monitoring terminals at these targets. The monitoring terminals include gas detection instruments and pressure detection instruments. The gas detection instruments monitor the gas concentration outside the valve wells in real time, while the pressure detection instruments monitor the gas pressure inside the pipelines in real time, obtaining a standard gas pressure value. The difference between the standard gas pressure value and the actual gas pressure value is marked as the pressure monitoring value. The monitored gas concentration value and pressure monitoring value are compared with preset gas concentration thresholds and pressure monitoring thresholds, respectively. If both the gas concentration value and pressure monitoring value are less than the gas concentration threshold and the pressure monitoring value is less than the pressure monitoring threshold, the monitored target is determined to have no leak characteristics. If the gas concentration value is greater than or equal to the gas concentration threshold and the pressure monitoring value is less than the pressure monitoring threshold, the monitored target is determined to have an external leak. The system identifies and generates an internal verification signal, which is then sent to the monitoring and verification module. If the gas concentration value is less than the gas concentration threshold and the pressure monitoring value is greater than or equal to the pressure monitoring threshold, the monitored object is determined to have internal leakage characteristics, an external verification signal is generated, and the external verification signal is sent to the monitoring and verification module. If the gas concentration value is greater than or equal to the gas concentration threshold and the pressure monitoring value is greater than or equal to the pressure monitoring threshold, the monitored object is determined to have a leakage condition, a leakage warning signal is generated, and the leakage warning signal is sent to the mobile terminal of the management personnel. This system performs leakage monitoring and analysis on the gas pipeline network of gas engineering projects. The monitoring terminal simultaneously collects and analyzes the external and internal leakage parameters of the monitored object, thereby enabling parallel monitoring of the external and internal leakage characteristics of the monitored object. When the monitored object only meets a single leakage characteristic, the monitoring results are verified, improving the accuracy of leakage monitoring and warning results for the gas pipeline network.

[0021] The monitoring and verification module is used to verify and analyze leakage monitoring results. When the monitoring and verification module receives an internal verification signal, it performs internal verification analysis on the gas pipeline network of the gas project. Monitoring objects with external leakage characteristics are marked as analysis objects. The analysis objects and the L1 subsequent monitoring objects are marked as internal verification objects. The internal verification objects are arranged according to the gas delivery direction to obtain an internal verification sequence. The internal verification objects are arranged in descending order of pressure monitoring values ​​to obtain a pressure monitoring sequence. The absolute value of the difference between the sequence number of the internal verification object in the internal verification sequence and the pressure monitoring sequence is marked as the internal verification value of the internal verification object. The internal verification values ​​of the internally verified objects are summed and averaged to obtain the internal verification coefficient. This coefficient is then compared to a preset internal verification threshold. If the internal verification coefficient is less than the threshold, a gas pipeline leak is detected, a location analysis signal is generated, and this signal is sent to the location analysis module. If the internal verification coefficient is greater than or equal to the threshold, no leak is detected, an anomaly detection signal is generated, and this signal is sent to the management personnel's mobile terminal. When the monitoring and verification module receives an external verification signal, it performs external verification analysis on the gas pipeline network of the gas project, identifying those exhibiting internal leak characteristics. The monitored objects are marked as analysis objects, and the analysis objects and the L1 monitoring objects thereafter are marked as external verification objects. The external verification objects are arranged according to the gas delivery direction to obtain an external verification sequence. The external verification objects are then arranged in descending order of gas concentration values ​​to obtain a gas concentration sequence. The absolute value of the difference between the external verification object's sequence number and its position in the external verification sequence and the gas concentration sequence is marked as the external verification value of the external verification object. The external verification values ​​of all external verification objects are summed and averaged to obtain the external verification coefficient. The external verification coefficient is compared with a preset external verification threshold: if the external verification coefficient is less than the external verification threshold... If the external verification coefficient is greater than or equal to the external verification threshold, it is determined that there is no leak in the gas pipeline network. A gas pressure anomaly investigation signal is generated and sent to the management personnel's mobile terminal. The leak monitoring results are verified and analyzed. The internal verification coefficient or external verification coefficient is obtained by comparing the gas delivery direction in the gas pipeline network with the characteristics of the leak parameters. The internal verification coefficient or external verification coefficient is then used to determine whether there is an actual leak in the gas pipeline network, thereby further improving the accuracy of the leak monitoring and early warning results.

[0022] The location analysis module is used to locate and analyze the leak location of the gas pipeline network in the gas engineering project after receiving the location analysis signal. It marks the monitoring object with the highest gas concentration value and the monitoring object with the highest pressure value in the gas pipeline network as external and internal marked objects, respectively. It determines whether the external and internal marked objects are the same monitoring object. If so, the corresponding monitoring object is marked as the leak object. If not, all monitoring objects between the external and internal marked objects are marked as calibration objects, and the monitoring terminals of the calibration objects are tested. The module combines the leak monitoring results and the verification analysis results to locate and investigate the leak location in the gas pipeline network. Based on the location and investigation analysis results, the monitoring accuracy of the monitoring equipment is evaluated, and timely maintenance and calibration are carried out when abnormal operation of the monitoring equipment occurs.

[0023] Example 2, as Figure 2 As shown, a gas pipeline network leakage early warning method applicable to gas engineering includes the following steps: Step 1: Conduct leak monitoring and analysis on the gas pipeline network of the gas project: Mark the valve wells of the gas pipeline network of the gas project as monitoring objects and set up monitoring terminals at the monitoring objects; compare the monitored gas concentration value and pressure monitoring value with the preset gas concentration threshold and pressure monitoring threshold respectively, and determine whether the monitoring object has leakage characteristics based on the comparison results; Step 2: Conduct internal or external verification analysis of the gas pipeline network of the gas project, and proceed to Step 3 if a leak is detected in the gas pipeline network; Step 3: Locate and analyze the gas pipeline network leak in the gas engineering project, and mark the leaking object or calibration object through the location analysis.

[0024] A gas pipeline network leakage early warning system applicable to gas engineering projects, during operation, marks the valve wells of the gas pipeline network as monitoring objects and sets up monitoring terminals at the monitoring objects; compares the monitored gas concentration value and pressure monitoring value with preset gas concentration threshold and pressure monitoring threshold respectively, and determines whether the monitoring object has leakage characteristics based on the comparison results; performs internal or external verification analysis on the gas pipeline network of the gas engineering project, and when a leakage condition is determined to occur in the gas pipeline network, performs location analysis on the leakage location of the gas pipeline network of the gas engineering project, and marks the leakage object or calibration object through location analysis.

[0025] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the structure of the invention or exceed the scope defined in the claims, all of which should fall within the protection scope of the present invention.

[0026] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0027] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A gas pipeline network leak early warning system suitable for gas engineering, characterized in that, It includes a leakage monitoring module, a monitoring verification module, and a location analysis module, which are sequentially connected in communication. The leakage monitoring module is used to perform leakage monitoring and analysis on the gas pipeline network of the gas project: The valve wells of the gas pipeline network are marked as monitoring objects, and monitoring terminals are set up at the monitoring objects. The gas concentration value and pressure monitoring value of the monitoring objects are obtained through the monitoring terminals. The monitored gas concentration value and pressure monitoring value are compared with preset gas concentration thresholds and pressure monitoring thresholds, respectively. If the gas concentration value is less than the gas concentration threshold and the pressure monitoring value is less than the pressure monitoring threshold, the monitoring object is determined to have no leakage characteristics. If the gas concentration value is greater than or equal to the gas concentration threshold and the pressure monitoring value is less than the pressure monitoring threshold, the monitoring object is determined to have external leakage characteristics, an internal verification signal is generated, and the internal verification signal is sent to the monitoring verification module. If the gas concentration value is less than the gas concentration threshold and the pressure monitoring value is greater than or equal to the pressure monitoring threshold, the monitoring object is determined to have internal leakage characteristics, an external verification signal is generated, and the external verification signal is sent to the monitoring verification module. If the gas concentration value is greater than or equal to the gas concentration threshold and the pressure monitoring value is greater than or equal to the pressure monitoring threshold, it is determined that the monitored object has a leakage condition, a leakage warning signal is generated and sent to the mobile terminal of the management personnel; The monitoring and verification module is used to verify and analyze the leakage monitoring results: when the monitoring and verification module receives the internal verification signal, it performs internal verification and analysis on the gas pipeline network of the gas project; When the monitoring and verification module receives an external verification signal, it performs external verification analysis on the gas pipeline network of the gas project. The location analysis module is used to locate and analyze the gas pipeline network leak location of the gas project after receiving the location analysis signal: the monitoring object with the highest gas concentration value and the monitoring object with the highest pressure value in the gas pipeline network are marked as external and internal marked objects, respectively, and it is determined whether the external and internal marked objects are the same monitoring object: if so, the corresponding monitoring object is marked as the leak object; if not, all monitoring objects between the external and internal marked objects are marked as calibration objects, and the monitoring terminals of the calibration objects are tested. The specific process of the monitoring and verification module to perform internal verification analysis on the gas pipeline network of the gas project includes: marking the monitoring objects with external leakage characteristics as analysis objects; marking the analysis objects and the L1 monitoring objects thereafter as internal verification objects; arranging the internal verification objects according to the gas transmission direction to obtain an internal verification sequence; arranging the internal verification objects according to the pressure monitoring values ​​from large to small to obtain a pressure monitoring sequence; marking the absolute value of the difference between the sequence number of the internal verification object in the internal verification sequence and the pressure monitoring sequence as the internal verification value of the internal verification object; summing and averaging the internal verification values ​​of all internal verification objects to obtain the internal verification coefficient; comparing the internal verification coefficient with the preset internal verification threshold; and determining whether the gas pipeline network has a leakage condition based on the comparison result. The specific process of the monitoring and verification module for external verification analysis of the gas pipeline network of the gas project includes: marking the monitoring objects with internal leakage characteristics as analysis objects; marking the analysis objects and the L1 monitoring objects thereafter as external verification objects; arranging the external verification objects according to the gas delivery direction to obtain an external verification sequence; arranging the external verification objects in descending order of gas concentration value to obtain a gas concentration sequence; marking the absolute value of the difference between the sequence number of the external verification object in the external verification sequence and the gas concentration sequence as the external verification value of the external verification object; summing and averaging the external verification values ​​of all external verification objects to obtain the external verification coefficient; comparing the external verification coefficient with the preset external verification threshold; and determining whether a leakage condition has occurred in the gas pipeline network based on the comparison result.

2. A gas pipeline network leak early warning system suitable for gas engineering as described in claim 1, characterized in that, The process of obtaining the gas concentration value and pressure monitoring value of the monitored object includes: the monitoring terminal includes a gas detection instrument and a gas pressure detection instrument. The gas detection instrument is used to monitor the gas concentration value outside the gas pipeline valve well in real time, and the gas pressure detection instrument is used to monitor the gas pressure value inside the gas pipeline in real time, obtain the standard value of gas pressure, and mark the difference between the standard value of gas pressure and the gas pressure value as the pressure monitoring value.

3. A gas pipeline network leak early warning system suitable for gas engineering according to claim 1, characterized in that, The specific process of comparing the internal verification coefficient with the preset internal verification threshold includes: if the internal verification coefficient is less than the internal verification threshold, it is determined that there is a leak in the gas pipeline network, a location analysis signal is generated and sent to the location analysis module; if the internal verification coefficient is greater than or equal to the internal verification threshold, it is determined that there is no leak in the gas pipeline network, an abnormal concentration investigation signal is generated and sent to the mobile terminal of the management personnel.

4. A gas pipeline network leak early warning system suitable for gas engineering according to claim 1, characterized in that, The specific process of comparing the external verification coefficient with the preset external verification threshold includes: if the external verification coefficient is less than the external verification threshold, it is determined that there is a leak in the gas pipeline network, a location analysis signal is generated and sent to the location analysis module; if the external verification coefficient is greater than or equal to the external verification threshold, it is determined that there is no leak in the gas pipeline network, a gas pressure anomaly investigation signal is generated and sent to the mobile terminal of the management personnel.

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