Intelligent monitoring system and method for gas extraction pump station

Abstract

The invention discloses an intelligent monitoring system and method for a gas extraction pump station, and relates to the technical field of intelligent monitoring of gas extraction pump stations. By monitoring environment information and coal mining information, the gas release condition and the influence of coal mining on gas release can be known in real time, the gas release state and the coal mining intensity in an area are intelligently judged accordingly, and whether a gas extraction strategy needs to be adjusted or not is judged; the problem of excessive extraction or insufficient extraction possibly existing in a static setting extraction mode is avoided, and data support is provided for precise regulation and control of a subsequent gas extraction strategy; the frequency of the gas extraction pump is dynamically adjusted according to the specific state (environment state and coal mining intensity) in each area, so that the energy consumption and the treatment cost can be effectively reduced, the gas extraction efficiency can be improved, the safety risk caused by insufficient gas extraction is reduced, and the economic benefit is increased. And efficient operation and stability improvement of the gas extraction pump station are realized.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent monitoring of gas extraction pumping stations, and in particular to an intelligent monitoring system and method for gas extraction pumping stations. Background Art

[0002] Gas extraction pumping stations are facilities used to extract and process gas from coal mines or other underground coal seams. They play a vital role. Gas is a gas released during the coal mining process. It is not only a source of dangerous fires and explosions, but also a hazard to workers and the environment. Therefore, it is particularly important to monitor gas extraction pumping stations.

[0003] At present, gas extraction pump stations usually use a set trigger concentration to extract gas. Once the gas concentration is detected to have reached the trigger concentration, the extraction equipment is automatically started. In actual applications, this may lead to excessive gas extraction in certain periods or under specific circumstances, increasing energy consumption and processing costs; or insufficient gas extraction when the gas concentration rises rapidly in a short period of time, increasing safety risks. This shows that this static extraction method cannot be adjusted in real time according to changes in gas concentration, resulting in energy waste and safety risks. Summary of the invention

[0004] The main purpose of the present invention is to provide an intelligent monitoring system and method for a gas extraction pump station to overcome the problems mentioned in the above background technology.

[0005] To achieve the above object, according to one aspect of the present invention, there is provided a gas extraction pump station intelligent monitoring system, the system comprising: a real-time perception module, a monitoring and extraction module and an intelligent control module;

[0006] The real-time perception module is used to obtain coal mining information and environmental parameters of each area, wherein the coal mining information includes the location of the mining site, the mining concentration of gas in the mining site, the mining length and the mining width; the environmental information includes the gas concentration, the ambient temperature recorded as, the ambient pressure recorded as, the coal seam thickness recorded as and the coal seam appearance image;

[0007] The monitoring and extraction module monitors the environmental status and coal mining intensity based on the environmental information and coal mining information in the region to determine whether the region needs to adjust the gas extraction strategy, and generates a control instruction accordingly, wherein the control instruction includes regional parameters;

[0008] The intelligent control module parses the received control instructions to obtain regional parameters, and controls the frequency of the gas extraction pump in the control area accordingly; the specific steps are:

[0009] Step 1: Retrieve regional parameters, where the regional parameters include regional promotion value, mining promotion value and expression concentration. The regional promotion value is used as the bottom circle radius, the top circle radius, and the expression concentration are used as the height to draw a graph to obtain the control model corresponding to the control area at each acquisition time. The control volume is output according to the control model, thereby obtaining the control volume corresponding to each acquisition time.

[0010] Step 2: construct a two-dimensional rectangular coordinate system with time as the horizontal coordinate and the control volume as the vertical coordinate, and input each control volume into the coordinate axis according to its corresponding collection time to obtain a control volume discrete graph, use the least squares method to perform linear regression fitting to obtain a regression line, extract the value corresponding to the vertical coordinate of the regression line, and record it as the regression value; multiply the regression value by the set frequency conversion coefficient to obtain the control frequency of the gas extraction pump;

[0011] Step 3: Get the pump frequency of the gas extraction pump at the current moment, and calculate the difference between it and the control frequency to get the control distance. According to the control distance, gradually adjust the gas extraction pump until the pump frequency is equal to the control frequency:

[0012] Step 4: When the pump frequency is equal to the regulation frequency, the control of the gas extraction pump is completed once; after each control of the gas extraction pump is completed, the extraction module and the intelligent control module are repeatedly monitored.

[0013] Furthermore, the specific process of gradual adjustment is:

[0014] 201: Get the absolute value of the control distance. When the absolute value is greater than the upper limit of the set distance interval, execute 202; when the absolute value of the control distance is within the set distance interval, execute 203; when the absolute value of the control distance is less than the lower limit of the set distance interval, execute 204;

[0015] 202: Adjust the pump frequency by the magnitude of K1, reacquire the adjusted pump frequency after adjustment, and calculate the adjustment distance and the absolute value of the adjustment distance by comparing the adjustment frequency with the adjustment frequency, and return to 201:

[0016] 203: Adjust the pump frequency by the magnitude of K2, reacquire the adjusted pump frequency after adjustment, and calculate the adjustment distance and the absolute value of the adjustment distance by comparing the adjustment frequency with the adjustment frequency, and return to 201:

[0017] 204: Adjust the pump frequency by the order of magnitude of K3, reacquire the adjusted pump frequency after adjustment, and calculate the adjusted pump frequency with the control frequency to obtain the control distance and the absolute value of the control distance, and return to 201: and K1>K2>K3>0.

[0018] Furthermore, the steps for generating the control instructions are as follows:

[0019] 301: Analyze the environmental status of each region based on the environmental information of each region to obtain a regional promotion value recorded as PBj, where j = 1, 2, 3...J, J values ​​are all positive integers, J represents the total number of collection moments, and j represents the sequence number of any collection moment;

[0020] 302: Based on the coal mining information, the promotion effect of coal mining and each region is analyzed to obtain the mining promotion value, which is recorded as MBj;

[0021] 303: Calculate the average value of the gas concentration Nij at each monitoring point in the area to obtain the apparent concentration of each area, recorded as The regional promotion value PBj, mining promotion value MBj and performance concentration in the region Denoted as regional parameters, the regional parameters of each region can be obtained;

[0022] 304: Perform weighted calculation on the regional parameters of each region to obtain the strategy value at each acquisition moment, construct a strategy value change curve with time with time as the horizontal axis and the strategy value as the vertical axis, and perform trend change analysis on the strategy value to obtain the strategy adjustment value. When the strategy adjustment value is greater than or equal to the set strategy threshold, the region is recorded as a control region, and the regional parameters of the control region are integrated into a control instruction, which is sent to the intelligent control module.

[0023] Furthermore, the specific process of trend change analysis of strategy value is as follows:

[0024] Draw tangents of the curve at the strategic point, calculate the slope of each tangent using the least squares method, and obtain the tangent slope at each strategic point, which is recorded as Xj; sum up the tangent slopes greater than zero to obtain the strategy value-added, which is recorded as Z1, and sum up the tangent slopes less than zero to obtain the strategy value-reduction, which is recorded as Z2; it should be noted that a tangent slope greater than zero indicates that the strategy value at the strategic point presents an increasing trend, indicating that the gas extraction demand in the area at this time increases; correspondingly, a tangent slope less than zero indicates that the strategy value at the strategic point presents a decreasing trend, indicating that the gas extraction demand in the area at this time decreases; count the number of tangent slopes equal to zero, and record it as Z3; use the set formula Calculate and obtain the strategy adjustment value Zd, where d1, d2, and d3 are the set proportional coefficients respectively. is the mean of the tangent slopes at each strategic point.

[0025] Furthermore, the environmental status of each area is analyzed based on the environmental information of each area. The specific process is as follows:

[0026] 501: retrieve the environmental information of each monitoring point in the region at each collection time, wherein the environmental information includes gas concentration Nij, environmental temperature Tij, environmental pressure Yij, coal seam thickness Dij and coal seam appearance image; wherein i = 1, 2, 3 ... I, I values ​​are all positive integers, I represents the total number of each monitoring point in the region, i represents the serial number of any monitoring point in the region;

[0027] 502: using a photo identifier to identify the number of cracks existing in the coal seam appearance graph and the crack length and crack width corresponding to each crack; calculating the crack area by multiplying the crack length and crack width of each crack; comparing and analyzing the crack area with the set area interval to record the cracks corresponding to the crack area as high-degree cracks, medium-degree cracks and low-degree cracks; respectively counting the cumulative number of high-degree cracks, medium-degree cracks and low-degree cracks, and recording them as L1, L2, and L3 respectively; respectively summing the crack areas corresponding to the high-degree cracks, medium-degree cracks and low-degree cracks to obtain the high-degree total value, medium-degree total value and low-degree total value, and recording them as L4, L5, and L6 respectively;

[0028] Substitute L1, L2, L3, L4, L5, L6 into the set formula

[0029] The crack value at the monitoring point is calculated, where a1, a2, and a3 are the set proportional coefficients, and a1>a2>a3>1. The crack value corresponding to each monitoring point at each acquisition time is recorded as Laij;

[0030] 503: Assume that there is a release standard parameter, wherein the release standard parameter includes standard temperature and standard air pressure, which are recorded as HT and HY respectively; the ambient temperature Tij, ambient pressure Yij, coal seam thickness Dij and crack value Laij of each monitoring point are combined by the set formula The environmental promotion value Dij, temperature-pressure correlation coefficient αij and coal seam structure coefficient βij corresponding to each monitoring point at each collection time are calculated, where b1, b2, b3, b4, b5 and b6 are the set proportional coefficients respectively;

[0031] 504: Compare and analyze the environmental promotion value at each monitoring point with the set promotion interval to divide the monitoring points corresponding to the environmental promotion value into high promotion points, medium promotion points and low promotion points, and count the cumulative number of high promotion points, medium promotion points and low promotion points respectively, and record them as P1j, P2j and P3j respectively; through the set formula The regional promotion value PBj of each region is obtained by calculation, wherein b7, b8, and b9 are respectively set proportional coefficients, and b7>b8>b9>0.

[0032] Furthermore, based on the coal mining information, the promotion effect of coal mining on each region is analyzed. The specific process is as follows:

[0033] Retrieve the coal mining parameters corresponding to each acquisition time, where the coal mining parameters include the location of the mining point, the mining concentration of the mining ground gas Mj, the mining length and the mining width; calculate the mining length and the mining width to obtain the mining area, which is recorded as Bj;

[0034] Take the geographical location center of each area, and calculate the distance difference between it and the mining point to obtain the mining spacing, recorded as Sj; substitute the mining concentration Mj, mining area Bj and mining spacing Sj corresponding to each collection time into the set formula The mining promotion value of each mining point at each collection time for each area is calculated and recorded as MBj, where c1, c2, and c3 are the set proportional coefficients respectively.

[0035] In order to achieve the above object, according to another aspect of the present invention, a method for intelligent monitoring of a gas extraction pump station is provided, the method comprising the following steps:

[0036] Rand1: Obtain and save coal mining information and environmental parameters of each area;

[0037] Rand2: Based on the environmental information and coal mining information in the region, the environmental status and coal mining intensity are monitored to determine whether the region needs to adjust the gas extraction strategy, and a control instruction is generated accordingly, where the control instruction includes regional parameters; the specific judgment steps are:

[0038] Step 1: Analyze the environmental status of each region based on the environmental information of each region to obtain the regional promotion value recorded as PBj, where j = 1, 2, 3...J, J values ​​are all positive integers, J represents the total number of collection moments, and j represents the sequence number of any collection moment;

[0039] Step 2: Based on the coal mining information, the promotion effect of coal mining and each region is analyzed to obtain the mining promotion value, which is recorded as MBj;

[0040] Step 3: Calculate the mean value of the gas concentration Nij of each monitoring point in the region to obtain the apparent concentration of each region, which is recorded as Nj; record the regional promotion value PBj, mining promotion value MBj and apparent concentration Nj in the region as regional parameters, thereby obtaining the regional parameters of each region;

[0041] Step 4: Perform weighted calculation on the regional parameters of each area to obtain the strategy value at each acquisition moment, and construct a strategy value change curve with time with time as the horizontal axis and the strategy value as the vertical axis, and analyze the trend change of the strategy value based on it to obtain the strategy adjustment value. When the strategy adjustment value is greater than or equal to the set strategy threshold, the area is recorded as a control area, and the regional parameters of the control area are integrated into a control instruction and sent to the intelligent control module;

[0042] Rand3: Analyze the received control instructions to obtain regional parameters, and adjust the frequency of the gas extraction pump in the control area accordingly; the specific steps are:

[0043] Step 1: Retrieve regional parameters, where the regional parameters include regional promotion value, mining promotion value and expression concentration. The regional promotion value is used as the bottom circle radius, the top circle radius, and the expression concentration are used as the height to draw a graph to obtain the control model corresponding to the control area at each acquisition time. The control volume is output according to the control model, thereby obtaining the control volume corresponding to each acquisition time.

[0044] Step 2: construct a two-dimensional rectangular coordinate system with time as the horizontal coordinate and the control volume as the vertical coordinate, and input each control volume into the coordinate axis according to its corresponding collection time to obtain a control volume discrete graph, use the least squares method to perform linear regression fitting to obtain a regression line, extract the value corresponding to the vertical coordinate of the regression line, and record it as the regression value; multiply the regression value by the set frequency conversion coefficient to obtain the control frequency of the gas extraction pump;

[0045] Step 3: Get the pump frequency of the gas extraction pump at the current moment, and calculate the difference between it and the control frequency to get the control distance. According to the control distance, gradually adjust the gas extraction pump until the pump frequency is equal to the control frequency:

[0046] Rand4: When the pump frequency is equal to the regulating frequency, the control of the gas extraction pump is completed once; after each control of the gas extraction pump is completed, Rand2-Rand3 are repeated.

[0047] Beneficial effects of the present invention:

[0048] By monitoring environmental information and coal mining information, the present invention can understand the gas release situation and the impact of coal mining on gas release in real time, and intelligently judge the gas release status and coal mining intensity in the area based on this, and judge whether it is necessary to adjust the gas extraction strategy, thereby avoiding the problem of over-extraction or under-extraction that may exist in the static setting extraction method, and providing data support for the precise regulation of subsequent gas extraction strategies;

[0049] The present invention can gradually adjust the pump frequency of the gas extraction pump, and can automatically make fine adjustments according to actual conditions until the adjustment requirements are met, which can effectively prevent the frequency of the extraction pump from fluctuating too much due to frequency adjustment, thereby improving the stability of the extraction pump;

[0050] The present invention dynamically adjusts the frequency of the gas extraction pump according to the specific conditions in each area (environmental conditions and coal mining intensity), which can not only effectively reduce energy consumption and processing costs, but also improve the efficiency of gas extraction, reduce the safety risks caused by insufficient gas extraction, and achieve efficient operation and improved stability of the gas extraction pump station. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0052] Figure 1 It is a schematic flow chart of the method of the present invention;

[0053] Figure 2 is a schematic diagram of system module connection of the present invention;

[0054] Figure 3 is the regulatory model of the present invention;

[0055] Figure 4 It is a discrete graph of the regulation volume of the present invention. DETAILED DESCRIPTION

[0056] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0057] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0058] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so as to describe the embodiments of the present invention described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0059] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0060] According to an embodiment of the present invention, Figure 1 As shown, a gas extraction pump station intelligent monitoring system is provided, the system includes: a real-time perception module, a monitoring and extraction module and an intelligent control module;

[0061] Taking the coal mine gas extraction pump station as a specific application scenario, a detailed description is given. Since the coal mining area covers a wide range, for the safety of coal mining, it is necessary to set up several gas extraction pipelines, each of which is responsible for gas extraction in different areas; each extraction pipeline consists of a pipeline and a gas extraction pump in series, and each pipeline can be independently controlled and adjusted;

[0062] Several monitoring points are set up in each area, and various sensors are installed at each monitoring point, such as high-definition cameras, gas concentration sensors, etc. The real-time perception module communicates with various types of sensors installed in each area to obtain environmental parameters at each monitoring point in the area; in addition, the real-time perception module is also used to obtain coal mining information, where the coal mining information includes the location of the mining site, the mining concentration of gas in the mining site, the mining length and the mining width;

[0063] The monitoring and extraction module monitors the environmental status and coal mining intensity based on the environmental information and coal mining information in the area to determine whether the area needs to be regulated by the gas extraction strategy, and generates regulation instructions accordingly; specifically:

[0064] Environmental status monitoring:

[0065] Retrieve the environmental information of each monitoring point in the area at each collection time, where the environmental information includes gas concentration Nij, ambient temperature Tij, ambient pressure Yij, coal seam thickness Dij and coal seam appearance image; where i = 1, 2, 3 ... I, j = 1, 2, 3 ... J, I and J are both positive integers, I represents the total number of monitoring points in the area, i represents the serial number of any monitoring point in the area; J represents the total number of collection times, j represents the serial number of any collection time; it should be noted that thick coal seams usually have larger gas storage space and can store more gas, while thin coal seams have relatively small gas storage capacity and a slower release rate;

[0066] The photo recognition device is used to identify the number of cracks in the coal seam appearance graphics and the crack length and crack width corresponding to each crack. It should be noted that the more cracks there are in the coal seam, the stronger the gas permeability is, making it easier for the gas to be released. Conversely, when there are fewer cracks, the gas mainly exists in the coal body in the form of adsorption, and its release rate is slower. The crack length and crack width of each crack are multiplied to calculate the crack area, and the crack area is compared and analyzed with the set area range. When the crack area is greater than the upper limit of the set area range, it means that the crack is relatively large and the crack degree is high. When the crack area is within the set area interval, a high-level crack is accumulated; when the crack area is less than the lower limit of the set area interval, a low-level crack is accumulated; the cumulative number of high-level cracks, medium-level cracks and low-level cracks are counted respectively, and they are recorded as L1, L2, and L3 respectively; the crack areas corresponding to high-level cracks, medium-level cracks and low-level cracks are summed up to obtain the high-level total value, medium-level total value and low-level total value, and they are recorded as L4, L5, and L6 respectively; using the set formula

[0067]

[0068] The crack value at the monitoring point is calculated, where a1, a2, and a3 are the set proportional coefficients, and a1>a2>a3>1; thus, the crack value corresponding to each monitoring point at each acquisition time is recorded as Laij;

[0069] It is assumed that there is a release standard parameter, wherein the release standard parameter includes standard temperature and standard air pressure, which are respectively denoted as HT and HY; when the ambient temperature is lower than the standard temperature, it means that the ambient temperature has no promoting effect on the release of gas; when the ambient pressure is lower than the standard air pressure, it means that the ambient pressure has no obvious promoting effect on the release of gas; correspondingly, when the ambient temperature or ambient pressure is higher than the standard temperature or standard air pressure respectively, it means that the ambient temperature or ambient pressure has an obvious promoting effect on the release of gas;

[0070] The ambient temperature Tij, ambient pressure Yij, coal seam thickness Dij and crack value Laij of each monitoring point are combined by the set formula The environmental promotion value Dij, the temperature-pressure correlation coefficient αij and the coal seam structure coefficient βij corresponding to each monitoring point at each acquisition time are calculated, where b1, b2, b3, b4, b5 and b6 are the set proportional coefficients respectively; it should be noted that the greater the ambient temperature and the greater the ambient pressure than the standard parameters, the greater the temperature-pressure promotion coefficient and the greater the environmental promotion value; when there are more coal seam cracks and the thicker the coal seam, the greater the coal seam structure coefficient and the greater the environmental promotion value;

[0071] Compare and analyze the environmental promotion value at each monitoring point with the set promotion interval. When the environmental promotion value is greater than the upper limit of the set promotion interval, it means that the gas promotion effect at the monitoring point is relatively strong, and a high promotion point is accumulated; when the environmental promotion value is within the set promotion interval, a medium promotion point is accumulated; when the environmental promotion value is less than the lower limit of the set promotion interval, a low promotion point is accumulated; the cumulative number of high promotion points, medium promotion points and low promotion points is counted respectively, and they are recorded as P1j, P2j, P3j respectively; through the set formula The regional promotion value PBj of each region is obtained by calculation, wherein b7, b8, and b9 are respectively set proportional coefficients, and b7>b8>b9>0;

[0072] Coal mining intensity monitoring:

[0073] Retrieve the coal mining parameters corresponding to each acquisition time, wherein the coal mining parameters include the location of the mining point, the mining concentration Mj of the mining area, the mining length and the mining width; the mining length and the mining width are calculated to obtain the mining area, which is recorded as Bj; wherein the mining length and the mining width are calculated as follows: for example, the total mining length collected at time (j-1) is A1, and the total mining length collected at time j is A2, then the mining length corresponding to the j acquisition time is (A2-A1); that is, the mining length corresponding to the acquisition time refers to the length mined in the time period from the previous acquisition time to the current acquisition time; the mining width calculation method can be obtained in the same way;

[0074] It should be noted that the larger the mining area, the more gas will be released. The spatial distribution between different areas will affect the diffusion and aggregation of gas concentration. The areas close to the mining area are more affected by coal mining, which may lead to higher gas concentrations, while the areas far away from the mining area are less affected by coal mining.

[0075] Take the geographical location center of each area, and calculate the distance difference between it and the mining point to obtain the mining spacing, which is recorded as Sj. Due to the progress of coal mining, the mining points at different collection times are different, so the mining spacing at each collection time is also different; the mining concentration Mj, mining area Bj and mining spacing corresponding to each collection time are calculated by the set formula The mining promotion value of each mining point at each collection time to each area is calculated and recorded as MBj, where c1, c2, and c3 are the set proportional coefficients respectively;

[0076] The gas concentration Nij of each monitoring point in the area is calculated by averaging to obtain the apparent concentration of each area, which is recorded as The regional promotion value PBj, mining promotion value MBj and performance concentration in the region Denoted as regional parameters, the regional parameters of each region can be obtained;

[0077] The regional parameters of each area are weighted to obtain the strategy value of each collection time. It should be noted that the strategy value is a value that describes the degree of adjustment of the gas extraction pump. The larger the strategy value, the greater the demand for gas extraction in the area. A two-dimensional rectangular coordinate system is constructed with time as the horizontal coordinate and the strategy value as the vertical coordinate. The strategy value is input into the coordinate system according to its corresponding collection time, and the position of the strategy value in the coordinate axis is recorded as the strategy point. The strategy points are connected in sequence using a smooth curve to obtain a curve chart of the strategy value of the area changing with time. A tangent line is drawn at the strategy point, and the least squares method is used to calculate the tangent line of each tangent point. The slope of the line is obtained by recording the tangent slope at each strategy point as Xj; the tangent slopes greater than zero are summed up to obtain the strategy value-added as Z1, and the tangent slopes less than zero are summed up to obtain the strategy value-reduction as Z2; it should be noted that the tangent slope greater than zero indicates that the strategy value at the strategy point presents an increasing trend, indicating that the gas extraction demand in the area at this time is increasing; correspondingly, the tangent slope less than zero indicates that the strategy value at the strategy point presents a decreasing trend, indicating that the gas extraction demand in the area at this time is decreasing; the number of tangent slopes equal to zero is counted and recorded as Z3; using the set formula Calculate and obtain the strategy adjustment value Zd, where d1, d2, and d3 are the set proportional coefficients respectively. is the mean value of the tangent slope at each strategy point. From the formula, we can see that when the ratio between the strategy appreciation and the strategy depreciation is further away from 1, it means that the strategy value of the area changes more, and the strategy adjustment value is larger; when the tangent slope at each strategy point fluctuates more, the strategy adjustment value is larger.

[0078] When the strategy adjustment value is greater than or equal to the set strategy threshold, it means that the gas state and gas extraction demand in the area have changed significantly, and the gas extraction strategy needs to be readjusted to adapt to the gas state in the area. In this case, the area is recorded as a control area, and the regional parameters of the control area are integrated into a control instruction and sent to the intelligent control module; when the strategy adjustment value is less than the set strategy threshold, it means that the changes in the gas state and gas extraction demand in the area are relatively small and can be ignored, so there is no need to adjust the extraction strategy;

[0079] By monitoring environmental information and coal mining information, we can understand the gas release situation and the impact of coal mining on gas release in real time, and intelligently judge the gas release status and coal mining intensity in the area, and determine whether the gas extraction strategy needs to be adjusted. This avoids the problems of over-extraction or under-extraction that may exist in static extraction methods, and provides data support for the precise regulation of subsequent gas extraction strategies.

[0080] When the intelligent control module receives the control command, it analyzes the command to obtain the regional parameters; it generates the control frequency based on the comprehensive analysis of the design parameters, and controls the gas extraction pump of the extraction pipeline accordingly to realize the adaptive control of the gas extraction pump; specifically:

[0081] Step 1: Retrieve regional parameters, where regional parameters include regional promotion value PBj, mining promotion value MBj and performance concentration like Figure 3 As shown, the area promotion value PBj is the bottom circle radius, the top circle radius is MBj, and the concentration is expressed The control model corresponding to the control area at each acquisition time is obtained by high mapping, and the control volume is output according to the control model (the control volume is the volume of the control model); from the control model, it can be seen that when the regional promotion value PBj is larger, the MBj is larger, and the expression concentration The larger it is, the larger the control volume is, which means the frequency of the extraction pump is also greater; thus, the control volume corresponding to each acquisition moment can be obtained;

[0082] Step 2: If Figure 4 As shown, a two-dimensional rectangular coordinate system is constructed with time as the horizontal coordinate and the control volume as the vertical coordinate, and each control volume is input into the coordinate axis according to its corresponding collection time to obtain a control volume discrete graph, and a linear regression fitting is performed using the least squares method to obtain a regression line, wherein the regression line is a straight line parallel to the horizontal axis of time, and the value corresponding to the vertical coordinate of the regression line is extracted and recorded as the regression value; the regression value is multiplied by the set frequency conversion coefficient to obtain the control frequency of the gas extraction pump, which is recorded as W1;

[0083] Step 3: Obtain the pump frequency of the gas extraction pump at the current moment and record it as W2, and calculate the difference between it and the control frequency to obtain the control distance. When the control distance (W2-W1>0) is greater than zero, it means that the pump frequency of the gas extraction pump needs to be reduced to a value equal to the control frequency W1; when the control distance (W2-W1<0) is less than zero, it means that the pump frequency of the gas extraction pump needs to be increased to a value equal to the control frequency W1; the specific steps for controlling the pump frequency according to the control distance are:

[0084] G1: Take the absolute value of the control distance. When the absolute value is greater than the upper limit of the set distance interval, execute G2; when the absolute value of the control distance is within the set distance interval, execute G3; when the absolute value of the control distance is less than the lower limit of the set distance interval, execute G4;

[0085] G2: Adjust the pump frequency by the order of K1 (when the control distance is greater than zero, the pump frequency is reduced by the order of K1, and when the control distance is less than zero, the pump frequency is increased by the order of K1); after the adjustment, re-acquire the adjusted pump frequency, and calculate it with the control frequency to obtain the control distance and the absolute value of the control distance, and return to G1;

[0086] G3: Adjust the pump frequency by the order of K2 (when the control distance is greater than zero, the pump frequency is reduced by the order of K1, and when the control distance is less than zero, the pump frequency is increased by the order of K2); after the adjustment, re-acquire the adjusted pump frequency, and calculate it with the control frequency to obtain the control distance and the absolute value of the control distance, and return to G1;

[0087] G4: adjust the pump frequency by the order of K3 (when the control distance is greater than zero, the pump frequency is reduced by the order of K1, and when the control distance is less than zero, the pump frequency is increased by the order of K1); after the adjustment, reacquire the adjusted pump frequency, and calculate it with the control frequency to obtain the control distance and the absolute value of the control distance, and return to G1; it should be noted that K1>K2>K3>0, and its specific value is set by technicians in this field according to their needs; in this way, the progressive adjustment of the pump frequency is realized. If there is a large gap between the pump frequency and the control frequency, it can be automatically fine-tuned according to the actual situation to prevent the frequency of the extraction pump from fluctuating too much due to the frequency adjustment, thereby improving the stability of the extraction pump;

[0088] Step 4: When the pump frequency is equal to the regulation frequency, the control of the gas extraction pump is completed once; after each control of the gas extraction pump is completed, the extraction module and the intelligent control module are repeatedly monitored;

[0089] By dynamically adjusting the frequency of the gas extraction pump according to the specific conditions in each area (environmental conditions and coal mining intensity), it can not only effectively reduce energy consumption and processing costs, but also improve the efficiency of gas extraction, reduce the safety risks caused by insufficient gas extraction, and achieve efficient operation and stability improvement of the gas extraction pump station.

[0090] According to an embodiment of the present invention, Figure 2 As shown, a method for intelligent monitoring of a gas extraction pump station is also provided, the method comprising the following steps:

[0091] Rand1: Obtain and save coal mining information and environmental parameters of each area;

[0092] Rand2: Based on the environmental information and coal mining information in the region, the environmental status and coal mining intensity are monitored to determine whether the region needs to adjust the gas extraction strategy, and a control instruction is generated accordingly, where the control instruction includes regional parameters; the specific judgment steps are:

[0093] Step 1: Analyze the environmental status of each region based on the environmental information of each region to obtain the regional promotion value recorded as PBj, where j = 1, 2, 3...J, J values ​​are all positive integers, J represents the total number of collection moments, and j represents the sequence number of any collection moment;

[0094] Step 2: Based on the coal mining information, the promotion effect of coal mining and each region is analyzed to obtain the mining promotion value, which is recorded as MBj;

[0095] Step 3: Calculate the mean value of the gas concentration Nij at each monitoring point in the area to obtain the apparent concentration of each area, recorded as The regional promotion value PBj, mining promotion value MBj and performance concentration Nj in the region are recorded as regional parameters, thus the regional parameters of each region can be obtained;

[0096] Step 4: Perform weighted calculation on the regional parameters of each area to obtain the strategy value at each acquisition moment, and construct a strategy value change curve with time with time as the horizontal axis and the strategy value as the vertical axis, and analyze the trend change of the strategy value based on it to obtain the strategy adjustment value. When the strategy adjustment value is greater than or equal to the set strategy threshold, the area is recorded as a control area, and the regional parameters of the control area are integrated into a control instruction and sent to the intelligent control module;

[0097] Rand3: Analyze the received control instructions to obtain regional parameters, and adjust the frequency of the gas extraction pump in the control area accordingly; the specific steps are:

[0098] Step 1: Retrieve regional parameters, where the regional parameters include regional promotion value, mining promotion value and expression concentration. The regional promotion value is used as the bottom circle radius, the top circle radius, and the expression concentration are used as the height to draw a graph to obtain the control model corresponding to the control area at each acquisition time. The control volume is output according to the control model, thereby obtaining the control volume corresponding to each acquisition time.

[0099] Step 2: construct a two-dimensional rectangular coordinate system with time as the horizontal coordinate and the control volume as the vertical coordinate, and input each control volume into the coordinate axis according to its corresponding collection time to obtain a control volume discrete graph, use the least squares method to perform linear regression fitting to obtain a regression line, extract the value corresponding to the vertical coordinate of the regression line, and record it as the regression value; multiply the regression value by the set frequency conversion coefficient to obtain the control frequency of the gas extraction pump;

[0100] Step 3: Get the pump frequency of the gas extraction pump at the current moment, and calculate the difference between it and the control frequency to get the control distance. According to the control distance, gradually adjust the gas extraction pump until the pump frequency is equal to the control frequency:

[0101] Rand4: When the pump frequency is equal to the regulating frequency, the control of the gas extraction pump is completed once; after each control of the gas extraction pump is completed, Rand2-Rand3 are repeated.

[0102] The above are only embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. An intelligent monitoring system for a gas extraction pump station, comprising a real-time sensing module for obtaining coal mining information and environmental parameters of various areas; characterized in that: Also includes: The monitoring and extraction module monitors the environmental status and coal mining intensity based on the environmental information and coal mining information in the region to determine whether the region needs to adjust the gas extraction strategy, and generates a control instruction accordingly, wherein the control instruction includes regional parameters; The intelligent control module parses the received control instructions to obtain regional parameters, and controls the frequency of the gas extraction pump in the control area accordingly; the specific steps are: Step 1: Retrieve regional parameters, where the regional parameters include regional promotion value, mining promotion value and expression concentration. The regional promotion value is used as the bottom circle radius, the top circle radius, and the expression concentration are used as the height to draw a graph to obtain the control model corresponding to the control area at each acquisition time. The control volume is output according to the control model, thereby obtaining the control volume corresponding to each acquisition time. Step 2: construct a two-dimensional rectangular coordinate system with time as the horizontal coordinate and the control volume as the vertical coordinate, and input each control volume into the coordinate axis according to its corresponding collection time to obtain a control volume discrete graph, use the least squares method to perform linear regression fitting to obtain a regression line, extract the value corresponding to the vertical coordinate of the regression line, and record it as the regression value; multiply the regression value by the set frequency conversion coefficient to obtain the control frequency of the gas extraction pump; Step 3: Get the pump frequency of the gas extraction pump at the current moment, and calculate the difference between it and the control frequency to get the control distance. According to the control distance, gradually adjust the gas extraction pump until the pump frequency is equal to the control frequency: Step 4: When the pump frequency is equal to the regulation frequency, the control of the gas extraction pump is completed once; after each control of the gas extraction pump is completed, the extraction module and the intelligent control module are repeatedly monitored.

2. According to claim 1, a gas extraction pump station intelligent monitoring system is characterized in that: The specific process of gradual adjustment is: 201: Get the absolute value of the control distance. When the absolute value is greater than the upper limit of the set distance interval, execute 202; when the absolute value of the control distance is within the set distance interval, execute 203; when the absolute value of the control distance is less than the lower limit of the set distance interval, execute 204; 202: Adjust the pump frequency by the magnitude of K1, reacquire the adjusted pump frequency after adjustment, and calculate the adjustment distance and the absolute value of the adjustment distance by comparing the adjustment frequency with the adjustment frequency, and return to 201: 203: Adjust the pump frequency by the magnitude of K2, reacquire the adjusted pump frequency after adjustment, and calculate the adjustment distance and the absolute value of the adjustment distance by comparing the adjustment frequency with the adjustment frequency, and return to 201: 204: Adjust the pump frequency by the order of magnitude of K3, reacquire the adjusted pump frequency after adjustment, and calculate the adjusted pump frequency with the control frequency to obtain the control distance and the absolute value of the control distance, and return to 201: and K1>K2>K3>0.

3. The intelligent monitoring system for a gas extraction pump station according to claim 1 is characterized in that: The specific steps for generating control instructions are as follows: 301: Analyze the environmental status of each region based on the environmental information of each region to obtain a regional promotion value recorded as PBj, where j = 1, 2, 3...J, J values ​​are all positive integers, J represents the total number of collection moments, and j represents the sequence number of any collection moment; 302: Based on the coal mining information, the promotion effect of coal mining and each region is analyzed to obtain the mining promotion value, which is recorded as MBj; 303: Calculate the average value of the gas concentration Nij at each monitoring point in the area to obtain the apparent concentration of each area, recorded as The regional promotion value PBj, mining promotion value MBj and performance concentration in the region Denoted as regional parameters, the regional parameters of each region can be obtained; 304: Perform weighted calculation on the regional parameters of each region to obtain the strategy value at each acquisition moment, construct a strategy value change curve with time with time as the horizontal axis and the strategy value as the vertical axis, and perform trend change analysis on the strategy value to obtain the strategy adjustment value. When the strategy adjustment value is greater than or equal to the set strategy threshold, the region is recorded as a control region, and the regional parameters of the control region are integrated into a control instruction, which is sent to the intelligent control module.

4. The intelligent monitoring system for a gas extraction pump station according to claim 3 is characterized in that: The specific process of trend change analysis of strategy value is as follows: Draw tangents of the curve at the strategic point, calculate the slope of each tangent using the least squares method, and obtain the tangent slope at each strategic point, which is recorded as Xj; sum up the tangent slopes greater than zero to obtain the strategy value-added, which is recorded as Z1, and sum up the tangent slopes less than zero to obtain the strategy value-reduction, which is recorded as Z2; it should be noted that a tangent slope greater than zero indicates that the strategy value at the strategic point presents an increasing trend, indicating that the gas extraction demand in the area at this time increases; correspondingly, a tangent slope less than zero indicates that the strategy value at the strategic point presents a decreasing trend, indicating that the gas extraction demand in the area at this time decreases; count the number of tangent slopes equal to zero, and record it as Z3; use the set formula Calculate and obtain the strategy adjustment value Zd, where d1, d2, and d3 are the set proportional coefficients respectively. is the mean of the tangent slopes at each strategic point.

5. The intelligent monitoring system for a gas extraction pump station according to claim 1 is characterized in that: The environmental status of each area is analyzed based on the environmental information of each area. The specific process is as follows: 501: retrieve the environmental information of each monitoring point in the region at each collection time, wherein the environmental information includes gas concentration Nij, environmental temperature Tij, environmental pressure Yij, coal seam thickness Dij and coal seam appearance image; wherein i = 1, 2, 3 ... I, I values ​​are all positive integers, I represents the total number of each monitoring point in the region, i represents the serial number of any monitoring point in the region; 502: using a photo recognition device to identify the number of cracks existing in the coal seam appearance graph and the crack length and crack width corresponding to each crack; calculating the product of the crack length and crack width of each crack to obtain the crack area; comparing and analyzing the crack area with the set area interval to record the cracks corresponding to the crack area as high-degree cracks, medium-degree cracks and low-degree cracks; respectively counting the cumulative number of high-degree cracks, medium-degree cracks and low-degree cracks, and summing the crack areas corresponding to the high-degree cracks, medium-degree cracks and low-degree cracks to obtain the high-degree total value, medium-degree total value and low-degree total value; The cumulative number of high-degree cracks, the cumulative number of medium-degree cracks, the cumulative number of low-degree cracks, the high-degree total value, the medium-degree total value and the low-degree total value are normalized and taken as their values. The crack value at the monitoring point is obtained by numerical analysis. Thus, the crack value corresponding to each monitoring point at each acquisition time is recorded as Laij; 503: Assume that there is a release standard parameter, wherein the release standard parameter includes standard temperature and standard air pressure, which are recorded as HT and HY respectively; the ambient temperature Tij, ambient pressure Yij, coal seam thickness Dij and crack value Laij of each monitoring point are combined by the set formula The environmental promotion value Dij, temperature-pressure correlation coefficient αij and coal seam structure coefficient βij corresponding to each monitoring point at each collection time are calculated, where b1, b2, b3, b4, b5 and b6 are the set proportional coefficients respectively; 504: Compare and analyze the environmental promotion value at each monitoring point with the set promotion interval to divide the monitoring points corresponding to the environmental promotion value into high promotion points, medium promotion points and low promotion points, count the cumulative number of high promotion points, medium promotion points and low promotion points respectively, and perform formula calculation and analysis on them with the environmental promotion value to obtain the regional promotion value PBj of each area.

6. The intelligent monitoring system for a gas extraction pump station according to claim 1, characterized in that: Based on coal mining information, the promotion effect of coal mining on various regions is analyzed. The specific process is as follows: Retrieve the coal mining parameters corresponding to each acquisition time, wherein the coal mining parameters include the location of the mining point, the mining concentration of the mining ground gas, the mining length and the mining width; calculate the mining length and the mining width to obtain the mining area; The geographical location center of each area is taken, and the distance difference between it and the mining point is calculated to obtain the mining spacing; the mining concentration, mining area and mining spacing corresponding to each collection time are normalized and their values ​​are taken, and the mining promotion value of the mining point at each collection time to each area is obtained by numerical analysis and recorded as MBj.

7. A method for intelligent monitoring of a gas extraction pump station, characterized in that Applied to a gas extraction pump station intelligent monitoring system as described in any one of claims 1 to 6, the method comprises the following steps: Rand1: Obtain and save coal mining information and environmental parameters of each area; Rand2: Based on the environmental information and coal mining information in the region, the environmental status and coal mining intensity are monitored to determine whether the region needs to adjust the gas extraction strategy, and a control instruction is generated accordingly, where the control instruction includes regional parameters; the specific judgment steps are: Step 1: Analyze the environmental status of each region based on the environmental information of each region to obtain the regional promotion value recorded as PBj, where j = 1, 2, 3...J, J values ​​are all positive integers, J represents the total number of collection moments, and j represents the sequence number of any collection moment; Step 2: Based on the coal mining information, the promotion effect of coal mining and each region is analyzed to obtain the mining promotion value, which is recorded as MBj; Step 3: Calculate the mean value of the gas concentration Nij of each monitoring point in the region to obtain the apparent concentration of each region, which is recorded as Nj; record the regional promotion value PBj, mining promotion value MBj and apparent concentration Nj in the region as regional parameters, thereby obtaining the regional parameters of each region; Step 4: Perform weighted calculation on the regional parameters of each area to obtain the strategy value at each acquisition moment, and construct a strategy value change curve with time with time as the horizontal axis and the strategy value as the vertical axis, and analyze the trend change of the strategy value based on it to obtain the strategy adjustment value. When the strategy adjustment value is greater than or equal to the set strategy threshold, the area is recorded as a control area, and the regional parameters of the control area are integrated into a control instruction and sent to the intelligent control module; Rand3: Analyze the received control instructions to obtain regional parameters, and adjust the frequency of the gas extraction pump in the control area accordingly; the specific steps are: Step 1: Retrieve regional parameters, where the regional parameters include regional promotion value, mining promotion value and expression concentration. The regional promotion value is used as the bottom circle radius, the top circle radius, and the expression concentration are used as the height to draw a graph to obtain the control model corresponding to the control area at each acquisition time. The control volume is output according to the control model, thereby obtaining the control volume corresponding to each acquisition time. Step 2: construct a two-dimensional rectangular coordinate system with time as the horizontal coordinate and the control volume as the vertical coordinate, and input each control volume into the coordinate axis according to its corresponding collection time to obtain a control volume discrete graph, use the least squares method to perform linear regression fitting to obtain a regression line, extract the value corresponding to the vertical coordinate of the regression line, and record it as the regression value; multiply the regression value by the set frequency conversion coefficient to obtain the control frequency of the gas extraction pump; Step 3: Get the pump frequency of the gas extraction pump at the current moment, and calculate the difference between it and the control frequency to get the control distance. According to the control distance, gradually adjust the gas extraction pump until the pump frequency is equal to the control frequency: Rand4: When the pump frequency is equal to the regulating frequency, the control of the gas extraction pump is completed once; after each control of the gas extraction pump is completed, Rand2-Rand3 are repeated.

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