CN114321740B - Combustible gas leakage point positioning method, system and readable storage module - Google Patents
Combustible gas leakage point positioning method, system and readable storage module Download PDFInfo
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Abstract
The application relates to a flammable gas leakage point positioning method, a flammable gas leakage point positioning system and a readable storage module, and relates to the technical field of flammable gas monitoring, comprising the steps of establishing a reference coordinate system in a pipeline environment and storing coordinate data of each pipeline and acquisition point data of each flammable gas sensor; establishing and storing association relations among the position data of the leakage points, the pressure drop data of each pipeline, the wind speed data in the pipeline environment, the alarm point position data and the alarm point concentration data; and calculating the leakage point position data according to the association relation based on the wind speed data, the pressure drop data of each pipeline, the alarm point position data and the alarm point concentration data in the pipeline environment. This application has the effect of being convenient for fix a position to flammable gas leak source fast.
Description
Technical Field
The application relates to the technical field of combustible gas monitoring, in particular to a combustible gas leakage point positioning method, a system and a storage module.
Background
In the production and processing processes of enterprises such as oil refineries, chemical industry parks and the like, a large amount of combustible gas can be generated, if equipment and pipelines for generating, dredging and storing the gas are not timely processed, production pollution can be caused, accidents such as poisoning and explosion can be more serious, and life and property safety is threatened.
The existing method for positioning the combustible gas leakage points mainly comprises the steps of detecting the point positions of the combustible gas sensors arranged at the interfaces of all valves, and sending out an alarm to prompt the phenomenon that the combustible gas exceeds the standard when the combustible gas sensors which are easy to generate leakage positions detect that the content of the combustible gas exceeds the standard.
Aiming at the related technology, the inventor considers that in the actual production of a factory at present, as sensors are more, once leakage is easy to find in time, but for transportation pipelines with extremely long length and complex arrangement, the combustible gas sensor cannot realize full-coverage detection, and only can determine the leakage area through surrounding sensor information, then manual investigation is carried out, so that the risk is high, time and labor are consumed, and even larger loss is possibly caused by missing the optimal repair time.
Disclosure of Invention
In order to facilitate rapid positioning of a flammable gas leakage point, the application provides a flammable gas leakage point positioning method, a flammable gas leakage point positioning system and a storage device.
In a first aspect, the present application provides a method for positioning a leakage point of a flammable gas, which adopts the following technical scheme:
a method for positioning a combustible gas leakage point, which comprises,
establishing a reference coordinate system in a pipeline environment and storing coordinate data of each pipeline and acquisition point data of each combustible gas sensor;
establishing and storing association relations among the position data of the leakage points, the pressure drop data of each pipeline, the wind speed data in the pipeline environment, the alarm point position data and the alarm point concentration data;
and calculating leakage point position data according to the association relation based on wind speed data, pressure drop data of each pipeline, alarm point position data and alarm point concentration data in the pipeline environment.
By adopting the technical scheme, in the process of leakage and diffusion of the combustible gas, the inventor finds that the position of the alarm point and the corresponding concentration data thereof have certain association with the position of the leakage point, the wind speed in the pipeline environment and the pressure drop of the leakage pipeline. Under the condition that the position data of the alarm point, the corresponding concentration data, the wind speed data in the pipeline environment and the pressure drop data of the leakage pipeline can be acquired or collected, the position data of the leakage point can be determined according to the association relation, and the low-efficiency operation mode that manual investigation can only be carried out near the alarm sensor when the traditional combustible gas leaks is changed, so that the rapid overhaul and maintenance can be carried out by staff conveniently.
Optionally, the establishing and storing the association relationship between the position data of the leakage point, the pressure drop data of each pipeline, the wind speed data in the pipeline environment, the alarm point position data and the alarm point concentration data includes:
detecting the air pressure of each pipeline in the pipeline environment, and confirming and storing the coordinate data of the leakage pipeline and the air leakage quantity according to the air pressure change data in each pipeline;
collecting wind speed data in a pipeline environment, and calculating and generating concentration data of each position of combustible gas after the combustible gas is diffused in the pipeline environment by combining the gas leakage quantity with the coordinate data of a leakage pipeline;
and acquiring coordinate data of the alarm point and corresponding concentration data of the alarm point, and calculating and generating leakage point position data by combining the concentration data of each position of the combustible gas after being diffused in the pipeline environment.
By adopting the technical scheme, the inventor firstly establishes a connection with whether leakage occurs in the pipeline or not and the leakage amount when the leakage occurs through the pressure drop data in the pipeline, so that the coordinate data of the leakage pipeline and the gas leakage amount can be determined according to the pressure drop data in each pipeline. According to the gas leakage quantity and the wind speed data, the concentration data of each position of the leaked combustible gas after being diffused in the pipeline environment can be obtained, and the specific position of the alarm point can be determined by comparing the concentration data with the concentration data actually measured by the alarm point, so that the purpose of improving the specific positioning of the leakage point of the combustible gas is achieved.
Optionally, the collecting wind speed data in the pipeline environment, and calculating and generating concentration data of each position of the combustible gas after the pipeline environment is diffused by combining the gas leakage amount and the coordinate data of the leakage pipeline, includes:
generating first leakage point position range data based on the acquired wind speed data in the pipeline environment and the alarm point position coordinate data;
calculating to obtain second leakage point position range data according to the first leakage point position range data and the confirmed leakage pipeline coordinate data;
and calculating and generating concentration data of each position of the combustible gas after being diffused in the pipeline environment based on the gas leakage amount and the position range data of the second leakage point.
By adopting the technical scheme, the first leakage point position range data can be determined according to the alarm point position coordinate data and surrounding sensor data thereof and combined with wind speed information, and the range of the leakage position can be rapidly reduced by combining with the confirmed leakage pipeline coordinate data, so that the calculated amount and the calculated time of subsequent calculation are greatly reduced, and the accuracy and the speed of positioning the leakage point of the combustible gas are improved.
Optionally, the generating the first leakage point position range data based on the collected wind speed data and the alarm point position coordinate data in the pipeline environment includes:
obtaining wind direction data according to the wind speed data, establishing a first reference vector axis parallel to the wind direction data, selecting a first acquisition point position corresponding to an alarm point positioned at the upstream of the wind direction on the first reference vector axis, passing through the first acquisition point position and establishing a first section perpendicular to the first reference vector axis;
selecting a second acquisition point position corresponding to a non-alarm point positioned at the upstream of the first acquisition point based on the first reference vector axis, and establishing a second section which passes through the second acquisition point position and is perpendicular to the first reference vector axis;
establishing a second reference vector axis perpendicular to the wind direction data according to the wind direction data, selecting a third acquisition point position corresponding to a non-alarm point on the left side of the first acquisition point, passing through the third acquisition point position and establishing a third section perpendicular to the second reference vector axis;
based on the second reference vector axis, selecting a fourth acquisition point position corresponding to a non-alarm point positioned on the right side of the first acquisition point, and establishing a fourth section which passes through the fourth acquisition point position and is perpendicular to the second reference vector axis;
and obtaining the first leakage point position range data based on the first section, the second section, the third section and the fourth section.
By adopting the technical scheme, the first leakage point range can be conveniently and rapidly determined.
Optionally, the calculating, based on the gas leakage amount and the second leakage point position range data, concentration data of each position after the combustible gas is diffused in the pipeline environment includes:
selecting a first position coordinate point in the second leakage point position range data as a predicted point;
calculating and generating concentration data of each position of the combustible gas after being diffused in the pipeline environment based on the predicted point position data, the gas leakage amount and the wind speed data and a set gas diffusion model, and storing the concentration data;
and selecting a second position coordinate point in the second leakage point position range data as a predicted point based on a set detection sequence, generating and storing concentration data of each position after the combustible gas is diffused in the pipeline environment until all data in the second leakage point position range data generate corresponding concentration data of each position after the combustible gas is diffused in the pipeline environment.
By adopting the technical scheme, if a certain point in the leakage pipeline leaks, on the basis of known leakage quantity and wind speed data in the pipeline environment, the concentration data of each position of the combustible gas corresponding to the point after being diffused in the pipeline environment can be obtained, so that the concrete position of the leakage point can be conveniently judged later.
Optionally, the acquiring the coordinate data of the alarm point and the corresponding concentration data of the alarm point, and calculating and generating the leakage point position data by combining the concentration data of each position of the combustible gas after being diffused in the pipeline environment, includes:
reading stored position concentration data of the combustible gas corresponding to the first position coordinate point after being diffused in the pipeline environment, comparing the position concentration data with the alarm point position coordinate data and the alarm point concentration data corresponding to the alarm point position coordinate data, and outputting the data of the first position coordinate point if the comparison results are identical; if the first position coordinate points are not matched, the data of the first position coordinate points are not output;
reading the stored second position coordinate point and comparing and outputting until all data in the second leakage point position range data are compared;
the output data of the position coordinate points are the leakage point position data generated by calculation.
By adopting the technical scheme, the leakage point position data can be obtained by rapid comparison.
Optionally, the collecting wind speed data in the pipeline environment, and calculating to generate concentration data of each position of the combustible gas after being diffused in the pipeline environment by combining the gas leakage amount and the coordinate data of the leakage pipeline, further includes:
acquiring temperature data, humidity data and air pressure data in a pipeline environment;
and acquiring wind speed data in a pipeline environment, and calculating and generating concentration data of each position of the combustible gas after being diffused in the pipeline environment by combining the gas leakage quantity and the coordinate data of the leakage pipeline based on the temperature data, the humidity data and the air pressure data.
By adopting the technical scheme, when the leakage points on the leakage pipeline data are leaked, the concentration data of each position of the combustible gas after being diffused in the pipeline environment can be obtained more accurately, and the accuracy of the positioning result is improved.
Optionally, the calculating based on the wind speed data, the pressure drop data of each pipeline, the alarm point position data and the alarm point concentration data in the pipeline environment according to the association relation to obtain the leakage point position data further includes:
based on the reference coordinate system, visually outputting the coordinate data of each pipeline and the acquisition point position data of each combustible gas sensor;
and marking the predicted positions of the leakage points on the visual output interface.
By adopting the technical scheme, all data are visually output on the display, so that staff can quickly and intuitively learn the positions of the leakage points in the pipeline environment.
In a second aspect, the present application provides a readable storage module for positioning a flammable gas leakage point, which adopts the following technical scheme:
the combustible gas leakage point positioning readable storage module comprises a memory, wherein the memory stores program data corresponding to the combustible gas leakage point positioning method used for executing any one of the above technologies.
By adopting the technical scheme, the combustible gas sends out an alarm signal when the combustible gas is collected to exceed the standard, the processor reads and starts the program data in the memory after receiving the alarm signal, the program firstly reads the data in each sensor according to the instruction, analyzes and processes the data, and stores and outputs the processing result after the processing is completed, so that the method is convenient for a worker to determine the accurate position of the combustible gas leakage point according to the output data, and is convenient for popularization and use.
In a third aspect, the application provides a flammable gas leakage point positioning system, which adopts the following technical scheme:
a combustible gas leakage point positioning system comprises,
the sensing module comprises a sensing module, wherein the sensing module comprises,
the wind speed sensor is arranged in the pipeline environment and used for acquiring wind speed data in the pipeline environment;
the combustible gas sensors are distributed in the pipeline environment and are used for collecting the concentration data of the combustible gas in the pipeline environment and sending out alarm signals when the concentration exceeds the standard;
the pressure sensors are distributed at the inlet end and the outlet end of each pipeline and are used for detecting pressure data in each pipeline;
the transmission module is in signal connection with the wind speed sensor, the combustible gas sensor and the pressure sensor and is used for collecting and transmitting the detection data acquired by the sensing module;
a computer readable storage module as described in the above-described technology;
and the processing module is in signal connection with the transmission module and in data connection with the computer-readable storage module, receives the detection data transmitted by the transmission module, and processes the detection data based on the program data corresponding to the flammable gas leakage point positioning method stored in the computer-readable storage module to obtain the flammable gas leakage point position data.
And the processing module is in signal connection with the transmission module, receives the data transmitted by the transmission module, and processes the data to obtain the position data of the leakage point of the combustible gas.
By adopting the technical scheme, the sensing module monitors various data in the pipeline environment in real time through the sensors, the monitored detection data are sent to the transmission module, the transmission module transmits the detection data to the readable computer medium, the processing module rapidly processes the detection data according to the data in the readable computer medium and outputs the processing result, and the output processing result is the position information data of the combustible gas leakage point.
In summary, the present application includes at least one of the following beneficial technical effects:
1. in the process of leakage and diffusion of combustible gas, the inventor finds that certain association exists between the position of the alarm point and the corresponding concentration data thereof, the position of the leakage point, the wind speed in the pipeline environment and the pressure drop of the leakage pipeline. Under the condition that the position data of the alarm point, the corresponding concentration data, the wind speed data in the pipeline environment and the pressure drop data of the leakage pipeline can be acquired or collected, the position data of the leakage point can be determined according to the association relation, and the low-efficiency operation mode that manual investigation can only be carried out near the alarm sensor when the traditional combustible gas leaks is changed, so that the rapid overhaul and maintenance can be carried out by staff conveniently;
2. the inventor firstly establishes a relation with whether leakage occurs in the pipeline or not and the leakage amount when the leakage exists through the pressure drop data in the pipeline, so that the coordinate data of the leakage pipeline and the gas leakage amount can be determined according to the pressure drop data in each pipeline. According to the gas leakage quantity and the wind speed data, concentration data of each position of the leaked combustible gas after each point on the leakage pipeline leaks can be obtained, the concentration data are compared with the concentration data actually measured by the alarm points, and the specific position of the alarm points can be determined, so that the purpose of improving the specific positioning of the leakage points of the combustible gas is achieved;
3. according to the position coordinate data of the alarm points and the surrounding sensor data, the position range data of a first leakage point can be determined by combining the wind speed information, and the range of the leakage position can be rapidly reduced by combining the confirmed leakage pipeline coordinate data, so that the calculated amount and the calculated time of subsequent calculation are greatly reduced, and the positioning precision and the positioning speed of the leakage point of the combustible gas are improved;
4. by collecting and adding temperature data, humidity data and air pressure data in the pipeline environment, the concentration data of each position of the combustible gas after being diffused in the pipeline environment can be obtained more accurately when leakage points on the leakage pipeline data are leaked, and the accuracy of a positioning result is improved.
Drawings
FIG. 1 is a flowchart of steps of a method for locating a leakage point of a flammable gas according to an embodiment of the present application.
Fig. 2 is a flowchart of the present application S2.
FIG. 3 is a pipeline environment diagram of a method for locating a flammable gas leakage point according to an embodiment of the present application.
Fig. 4 is a flowchart of the present application S3.
FIG. 5 is a block flow diagram of a combustible gas leak location system in accordance with an embodiment of the present application.
Reference numerals illustrate: 1. a perception module; 11. a wind speed sensor; 12. a combustible gas sensor; 13. a pressure sensor; 2. a transmission module; 3. a computer readable storage module; 4. and a processing module.
Detailed Description
For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
The execution sequence of the method steps described in the embodiments of the present application may be performed in the order described in the specific embodiments, or the execution sequence of each step may be adjusted on the premise of solving the technical problem according to actual needs, which is not listed here.
Embodiments of the present application are described in further detail below with reference to the drawings attached hereto.
The present application is described in further detail below in conjunction with figures 1-4.
The embodiment of the application discloses a flammable gas leakage point positioning method. Referring to fig. 1, the method includes the steps of:
s1, establishing a reference coordinate system in a pipeline environment and storing coordinate data of each pipeline and acquisition point position data of each combustible gas sensor;
s2, establishing and storing association relations among the position data of the leakage point, the pressure drop data of each pipeline, the wind speed data in the pipeline environment, the alarm point position data and the alarm point concentration data;
s3, acquiring coordinate data of alarm points and corresponding concentration data of the alarm points, and calculating and generating leakage point position data by combining the concentration data of each position of the combustible gas after being diffused in a pipeline environment;
s4, based on a reference coordinate system, carrying out visual output on the coordinate data of each pipeline and the data of the acquisition point position of each combustible gas sensor;
s5, marking the predicted positions of the leakage points on a visual output interface.
Specifically, step S1 includes selecting an arbitrary point in the pipeline environment as an origin of coordinates, and forming a reference coordinate system based on the origin of coordinates by taking an x-axis and a y-axis in a horizontal direction and taking a z-axis in a vertical direction. Based on this reference coordinate system, the line coordinate data is recorded, which is stored in the form of a line segment equation or in the form of a data lattice.
Meanwhile, a plurality of flammable gas sensor acquisition points are distributed in the pipeline environment, and in the embodiment, the flammable gas sensor acquisition points are distributed according to the pipeline distribution density, and in other embodiments, the flammable gas sensor acquisition points can be distributed at all electromagnetic valves, pipeline interfaces or directly and uniformly distributed in the pipeline environment. And (3) finishing arrangement and recording the acquisition point position data of each combustible gas sensor, wherein the acquisition point position data of the combustible gas sensors are stored in the form of point coordinates.
Referring to fig. 2 and 3, step S2 specifically includes the following two steps:
s21, detecting the air pressure of each pipeline in the pipeline environment, and confirming and storing the coordinate data of the leakage pipeline and the air leakage quantity according to the air pressure change data in each pipeline;
s22, collecting wind speed data in a pipeline environment, and calculating and generating concentration data of each position of the combustible gas after the combustible gas is diffused in the pipeline environment by combining the gas leakage quantity and the coordinate data of the leakage pipeline. The area indicated by a in fig. 3 is a flammable gas leakage area, and B is a pipeline in which gas leakage occurs.
Specifically, step S21 includes setting up pressure sensors upstream and downstream of each pipeline in the pipeline environment in advance, where pressure drop data between the two pressure sensors set up upstream and downstream will remain unchanged or slightly change within a certain constant interval when no leakage occurs in each pipeline in the pipeline environment. When the leakage point is generated once, the pressure drop data generates a variation, and the pipeline corresponding to the pressure drop data generated by the variation is the leakage pipeline, and the coordinate data of the leakage pipeline is stored. Meanwhile, the leakage amount of the combustible gas can be determined according to the variation and the time difference between the alarm of the combustible gas sensor and the variation of the pressure sensor.
Specifically, step S22 includes three steps:
s221, generating first leakage point position range data based on acquired wind speed data in the pipeline environment and alarm point position coordinate data; as shown in fig. 3, the area indicated by C is the first leakage point position range.
S222, calculating second leakage point position range data according to the first leakage point position range data and the confirmed leakage pipeline coordinate data;
s223, calculating concentration data of each position after the generated combustible gas is diffused in the pipeline environment based on the gas leakage amount and the position range data of the second leakage point.
In conjunction with fig. 3, S221 specifically includes the following five steps:
s2211, wind direction data are obtained according to wind speed data, a first reference vector axis is established parallel to the wind direction data, a first acquisition point position corresponding to an alarm point located at the upstream of the wind direction on the first reference vector axis is selected, and a first section is established after passing through the first acquisition point position and being perpendicular to the first reference vector axis.
The first acquisition point selects the position of the sensor of the most upstream alarm point in the wind direction, a first section is established through the position point, and the upstream position of the leakage point in the first section can be determined.
S2212, based on the first reference vector axis, selecting a second acquisition point position corresponding to a non-alarm point located at the upstream of the first acquisition point, and establishing a second section through the second acquisition point position and perpendicular to the first reference vector axis.
The second acquisition point selects the position of the non-alarm point sensor closest to the first acquisition point at the upstream of the wind direction, and the position of the leakage point at the downstream of the second section can be determined through the second section established by the position point.
S2213, a second reference vector axis is established perpendicular to wind direction data according to the wind direction data, a third acquisition point position corresponding to a non-alarm point, which is positioned on the left side of the first acquisition point, of the second reference vector axis is selected, and a third section is established through the third acquisition point position and perpendicular to the second reference vector axis.
The third acquisition point is selected as the position of the non-alarm point sensor closest to the first acquisition point to the left side of the crosswind, and the position of the leakage point on the right side of the third section can be determined through the third section established by the position point.
S2214, selecting a fourth acquisition point position corresponding to a non-alarm point positioned on the right side of the first acquisition point based on the second reference vector axis, and establishing a fourth section through the fourth acquisition point position and perpendicular to the second reference vector axis;
the fourth acquisition point selects the position of the non-alarm point sensor closest to the first acquisition point to the right of the crosswind, and the position of the leakage point on the left side of the fourth section can be determined through the fourth section established by the position point.
S2215, based on the first section, the second section, the third section and the fourth section, first leakage point position range data are obtained.
Specifically, the first section, the second section, the third section and the fourth section form a spatial range in the vertical direction, and the spatial range is the first leakage point position range data.
Specifically, step S222 includes, comparing the first leakage point position range data obtained in step S2215 with the leakage pipeline coordinate data obtained in step S21, and obtaining an intersection of the two data to obtain second leakage point position range data, where the second leakage point position range data is substantially smaller than the first leakage point position range data and the leakage pipeline data, so that the calculation amount and the calculation time of subsequent calculation are effectively reduced.
Step S223 specifically includes the following three steps:
s2231, selecting the first position coordinate point in the second leakage point position range data as a predicted point.
Specifically, in this embodiment, the first position coordinate point selects an intersection point of the first leakage point range data and the leakage pipe coordinate data, and in other embodiments, the first leakage point may also be selected as a midpoint of the leakage pipe within the second leakage point range.
S2232, calculating and generating concentration data of each position of the combustible gas after being diffused in the pipeline environment based on the predicted point position data, the gas leakage amount and the wind speed data and based on the set gas diffusion model, and storing the concentration data.
Specifically, the position data of the predicted point is taken as the leakage point, and in combination with the gas leakage amount obtained in the step S21 and the known wind speed data, in this embodiment, concentration data of each position after the combustible gas leaked from the leakage point is generated and diffused in the pipeline environment is calculated and stored based on the UDM gas diffusion model, and in other embodiments, concentration data of each position after the combustible gas leaked from the leakage point is generated by adopting other gas diffusion models based on the temperature data, the humidity data and the air pressure data.
S2233, based on the set detection sequence, selecting a second position coordinate point in the second leakage point position range data as a prediction point, generating and storing concentration data of each position after the combustible gas is diffused in the pipeline environment until all data in the second leakage point position range data generate corresponding concentration data of each position after the combustible gas is diffused in the pipeline environment.
Specifically, in this embodiment, the detection sequence is set to take the first position coordinate point as a starting point, take the length of 20cm on the leakage pipeline in the position range data of the first leakage point as an increment, and sequentially select the second position coordinate point and the nth position coordinate point of the third position coordinate point … … until the predicted point exceeds the position range data of the second leakage point. And generating and storing concentration data of all positions of the combustible gas corresponding to all the predicted points after the combustible gas is diffused in the pipeline environment.
Referring to fig. 4, S3 specifically includes two steps:
s31, reading stored concentration data of each position of the combustible gas corresponding to the first position coordinate point after being diffused in the pipeline environment, comparing the stored concentration data with alarm point position coordinate data and alarm point concentration data corresponding to the alarm point position coordinate data, and outputting data of the first position coordinate point if comparison results are identical; if the first position coordinate points are not matched, the data of the first position coordinate points are not output.
Specifically, firstly, concentration data of each position of the combustible gas corresponding to the first position coordinate point after being diffused in the pipeline environment is extracted, the estimated concentration data of the position is searched according to the position coordinate data of the alarm point, the estimated concentration data is compared with the concentration data of the alarm point, in the embodiment, the comparison result is considered to be identical when the difference of the comparison result is lower than 10PPM (the threshold value can be adjusted according to the components of different combustible gases), and the comparison result is considered to be not identical when the difference of the comparison result exceeds the difference. Particularly, when a plurality of alarm point position coordinate data are generated, all alarm points need to be compared, and all comparison results are lower than 10PPM and are regarded as coincidence of comparison results. When the comparison result is identical, the first position point is output, and if the comparison result is not identical, the first position point is not output.
S32, reading the stored second position coordinate points, comparing and outputting until all data in the second leakage point position range data are compared, wherein the output position coordinate point data are calculated and generated leakage point position data.
Specifically, the step S31 is repeated for all the predicted points in the second leakage point position range data in the step S2233 until all the predicted points generate corresponding predicted results, and finally the output data of the position coordinate points is the calculated leakage point position data.
Further, the data in steps S4 and S5 are performed in the visualization software OpenCV.
The embodiment of the application also discloses a computer readable storage module.
Specifically, the computer-readable storage module stores a computer program that can be loaded by a processor and that performs the flammable gas leak location method as described above, for example, the computer-readable storage module includes: a U-disk, a removable hard disk, a Read-only memory (ROM), a random access memory (RandomAccessMemory, RAM), a magnetic disk, an optical disk, or other various media capable of storing program codes.
Based on the computer readable storage module, in order to realize the flammable gas leakage point positioning method, the embodiment of the application also discloses a flammable gas leakage point positioning system.
Referring to fig. 4, a combustible gas leak location system includes a sensing module 1, a transmission module 2, a computer readable storage module 3, and a processing module 4.
In particular, the perception module 1 comprises,
the wind speed sensor 11 is arranged in a pipeline environment and is in signal connection with the transmission module 2, and in the embodiment of the application, the wind speed sensor 11 is selected as a wireless wind speed/wind direction sensor-WSD 202-EX and is connected with the transmission module 2 through a 5G signal or an optical fiber signal for collecting wind speed and wind direction data in the pipeline environment.
The flammable gas sensor 12 is arranged in a pipeline environment according to pipeline distribution density distribution, is used for collecting the concentration data of the flammable gas in the pipeline environment and sending out an alarm signal when the concentration exceeds the standard, and in the embodiment of the application, the flammable gas sensor 12 is selected as a BBS-GD/H3000W flammable (toxic) gas detector and is connected with the transmission module 2 through a 5G signal or an optical fiber signal.
The pressure sensors 13 are distributed at the inlet end and the outlet end of each pipeline and are used for detecting pressure data in each pipeline, and in the embodiment of the application, the pressure sensors 13 are BRW800-2100 type diffusion silicon pressure sensors 13.
The transmission module 2 is in signal connection with the wind speed sensor 11, the combustible gas sensor 12 and the pressure sensor 13, and is used for collecting and transmitting detection data acquired by the sensing module 1, in the embodiment of the application, the transmission module 2 is a WRG-GDS series explosion-proof intelligent wireless device, and the wireless collection of the detection data in the pipeline environment is performed in real time and the transmission function is performed on the processing module 4 through a network switch.
The computer readable storage module 3 in this embodiment is selected to serve a software disk for the flammable gas leak location method program.
The processing module 4 is in signal connection with the transmission module 2, receives data transmitted by the transmission module 2, and processes the data to obtain the position data of the combustible gas leakage point, and in the embodiment of the application, the processing module 4 adopts a mode of processing the field workstation and the cloud server simultaneously, so that smooth operation of the system is ensured when problems occur in the field workstation.
The present embodiment is only for explanation of the present invention and is not to be construed as limiting the present invention, and modifications to the present embodiment, which may not creatively contribute to the present invention as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present invention.
Claims (8)
1. A flammable gas leakage point positioning method is characterized in that: comprising the steps of (a) a step of,
establishing a reference coordinate system in a pipeline environment and storing coordinate data of each pipeline and acquisition point data of each combustible gas sensor;
establishing and storing association relations among the position data of the leakage points, the pressure drop data of each pipeline, the wind speed data in the pipeline environment, the alarm point position data and the alarm point concentration data;
calculating to obtain leakage point position data according to the association relation based on wind speed data, pressure drop data of each pipeline, alarm point position data and alarm point concentration data in the pipeline environment;
the establishing and storing of the association relation between the leakage point position data, the pressure drop data of each pipeline, the wind speed data in the pipeline environment, the alarm point position data and the alarm point concentration data comprises the following steps:
detecting the air pressure of each pipeline in the pipeline environment, and confirming and storing the coordinate data of the leakage pipeline and the air leakage quantity according to the air pressure change data in each pipeline;
collecting wind speed data in a pipeline environment, and calculating and generating concentration data of each position of combustible gas after the combustible gas is diffused in the pipeline environment by combining the gas leakage quantity with the leakage pipeline coordinate data;
the wind speed data in the pipeline environment is collected, and the concentration data of each position of the combustible gas after being diffused in the pipeline environment is calculated and generated by combining the gas leakage quantity and the leakage pipeline coordinate data, and the method comprises the following steps:
generating first leakage point position range data based on the acquired wind speed data in the pipeline environment and the alarm point position coordinate data;
calculating to obtain second leakage point position range data according to the first leakage point position range data and the confirmed leakage pipeline coordinate data;
and calculating and generating concentration data of each position of the combustible gas after being diffused in the pipeline environment based on the gas leakage amount and the position range data of the second leakage point.
2. The method for locating a combustible gas leak source of claim 1 wherein: based on the collected wind speed data and alarm point position coordinate data in the pipeline environment, generating first leakage point position range data comprises the following steps:
obtaining wind direction data according to the wind speed data, establishing a first reference vector axis parallel to the wind direction data, selecting a first acquisition point position corresponding to an alarm point positioned at the upstream of the wind direction on the first reference vector axis, passing through the first acquisition point position and establishing a first section perpendicular to the first reference vector axis;
selecting a second acquisition point position corresponding to a non-alarm point positioned at the upstream of the first acquisition point based on the first reference vector axis, and establishing a second section which passes through the second acquisition point position and is perpendicular to the first reference vector axis;
establishing a second reference vector axis perpendicular to the wind direction data according to the wind direction data, selecting a third acquisition point position corresponding to a non-alarm point on the left side of the first acquisition point, passing through the third acquisition point position and establishing a third section perpendicular to the second reference vector axis;
based on the second reference vector axis, selecting a fourth acquisition point position corresponding to a non-alarm point positioned on the right side of the first acquisition point, and establishing a fourth section which passes through the fourth acquisition point position and is perpendicular to the second reference vector axis;
and obtaining the first leakage point position range data based on the first section, the second section, the third section and the fourth section.
3. The method for locating a combustible gas leak source of claim 1 wherein: calculating concentration data of each position of the generated combustible gas after being diffused in the pipeline environment based on the gas leakage amount and the second leakage point position range data, wherein the method comprises the following steps:
selecting a first position coordinate point in the second leakage point position range data as a predicted point;
calculating and generating concentration data of each position of the combustible gas after being diffused in the pipeline environment based on the predicted point position data, the gas leakage amount and the wind speed data and a set gas diffusion model, and storing the concentration data;
and selecting a second position coordinate point in the second leakage point position range data as a predicted point based on a set detection sequence, generating and storing concentration data of each position after the combustible gas is diffused in the pipeline environment until all data in the second leakage point position range data generate corresponding concentration data of each position after the combustible gas is diffused in the pipeline environment.
4. A method of locating a flammable gas leak as recited in claim 3, wherein: based on wind speed data, pressure drop data of each pipeline, alarm point position data and alarm point concentration data in the pipeline environment, calculating to obtain leakage point position data according to the association relation, wherein the method comprises the following steps:
reading stored position concentration data of the combustible gas corresponding to the first position coordinate point after being diffused in the pipeline environment, comparing the position concentration data with the alarm point position coordinate data and the alarm point concentration data corresponding to the alarm point position coordinate data, and outputting the data of the first position coordinate point if the comparison results are identical; if the first position coordinate points are not matched, the data of the first position coordinate points are not output;
and reading the stored second position coordinate point and comparing and outputting until all data in the second leakage point position range data are compared, wherein the output position coordinate point data are the leakage point position data generated by calculation.
5. The method for locating a combustible gas leak source of claim 1 wherein: establishing and storing the association relation between the position data of the leakage point, the pressure drop data of each pipeline and the wind speed data in the pipeline environment, the alarm point position data and the alarm point concentration data, and further comprising:
acquiring temperature data, humidity data and air pressure data in a pipeline environment;
and acquiring wind speed data in a pipeline environment, and establishing and storing the association relation among the position data of the leakage point, the pressure drop data of each pipeline, wind speed data in the pipeline environment, temperature data, humidity data, air pressure data, alarm point position data and alarm point concentration data based on the temperature data, the humidity data and the air pressure data.
6. The method for locating a combustible gas leak source of claim 1 wherein: based on wind speed data, pressure drop data of each pipeline, alarm point position data and alarm point concentration data in the pipeline environment, after the position data of the leakage point is calculated according to the association relation, the method further comprises the following steps:
based on the reference coordinate system, visually outputting the coordinate data of each pipeline and the acquisition point position data of each combustible gas sensor;
and marking the predicted positions of the leakage points on the visual output interface.
7. A computer-readable storage module, characterized by: comprising a memory storing program data for executing a method for locating a leak of a combustible gas according to any one of claims 1-6.
8. A combustible gas leak location system, characterized by: the system comprises:
a perception module (1) comprising,
the wind speed sensor (11) is arranged in the pipeline environment and is used for acquiring wind speed data in the pipeline environment;
the combustible gas sensors (12) are distributed in the pipeline environment and are used for collecting the concentration data of the combustible gas in the pipeline environment and sending out alarm signals when the concentration exceeds the standard;
the pressure sensors (13) are distributed at the inlet end and the outlet end of each pipeline and are used for detecting pressure data in each pipeline;
the transmission module (2) is in signal connection with the wind speed sensor (11), the combustible gas sensor (12) and the pressure sensor (13) and is used for collecting and transmitting detection data acquired by the sensing module (1);
the computer readable storage module (3) of claim 7;
and the processing module (4) is in signal connection with the transmission module (2) and in data connection with the computer readable storage module (3), receives the detection data transmitted by the transmission module (2), and processes the detection data based on program data corresponding to the flammable gas leakage point positioning method stored in the computer readable storage module (3) to obtain the flammable gas leakage point position data.
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| CN101625071B (en) * | 2009-08-07 | 2012-11-28 | 天津大学 | Method for measuring and locating leakage of gas pipelines |
| CN104834017A (en) * | 2015-04-30 | 2015-08-12 | 华南理工大学 | Positioning method for hazardous gas leakage diffusion accident source |
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