CN114484272B - Method, device and system for monitoring combined state of gas storage tank group and storage medium - Google Patents
Method, device and system for monitoring combined state of gas storage tank group and storage medium Download PDFInfo
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- CN114484272B CN114484272B CN202111537604.6A CN202111537604A CN114484272B CN 114484272 B CN114484272 B CN 114484272B CN 202111537604 A CN202111537604 A CN 202111537604A CN 114484272 B CN114484272 B CN 114484272B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
- F17C13/025—Special adaptations of indicating, measuring, or monitoring equipment having the pressure as the parameter
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/002—Details of vessels or of the filling or discharging of vessels for vessels under pressure
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L11/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/03—Control means
- F17C2250/032—Control means using computers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/04—Indicating or measuring of parameters as input values
- F17C2250/0404—Parameters indicated or measured
- F17C2250/043—Pressure
Abstract
The application relates to a method and a device for monitoring the combination state of a gas storage tank group, computer equipment and a storage medium. The method comprises the following steps: acquiring the air pressure value of the air storage tank group at each sampling point; comparing the air pressure values of different sampling points to obtain the air pressure linkage change characteristics among different air storage tanks of the air storage tank group; and when the air pressure linkage change characteristic meets the air pressure change threshold condition, judging that the combination state between the two corresponding air storage tanks is a communication state. This application is through carrying out joint analysis and judgement to the atmospheric pressure linkage change characteristic of each gas holder and gas transmission pipeline, reachs the connected state between the gas holder to the realization is to the automatic judgement of the combined state between each gas holder of gas holder crowd, has obvious high efficiency and convenience, improves experimental dispatch and management efficiency.
Description
Technical Field
The application relates to the technical field of aerodynamic force, in particular to a method, a device and a system for monitoring the combined state of an air storage tank and a storage medium.
Background
Compressed air, natural gas, special gas and the like are used as power resources and are widely applied to the fields of heating, transportation, power experiments and the like. These gas sources are usually stored in gas tanks to ensure stability of the gas supply. In the scenes of aerodynamic experiments and the like, a plurality of air storage tanks are often communicated through air transmission pipelines to form an air storage tank group, and the combined use state of each air storage tank in the air storage tank group is monitored and allocated so as to meet different air utilization requirements.
For monitoring the combination state of the gas storage tank groups, at present, statistics on the opening and closing conditions of valves on gas transmission pipelines among the gas storage tank groups is mainly relied on manually. The problem of data acquisition lag often exists in the mode, so that the combination condition of the gas storage tank group is not sufficiently known, and the experiment scheduling and management efficiency is further influenced.
Disclosure of Invention
In view of the above, it is desirable to provide a method, an apparatus, a system and a storage medium for monitoring the right combination status of a gas tank, which can improve the monitoring effectiveness of the combination status of a group of gas tanks.
A method for monitoring the combined state of a gas storage tank group comprises the following steps:
acquiring the air pressure value of the air storage tank group at each sampling point;
comparing the air pressure values of different sampling points to obtain the air pressure linkage change characteristics among different air storage tanks of the air storage tank group;
and when the air pressure linkage change characteristic meets the air pressure change threshold condition, judging that the combination state between the two corresponding air storage tanks is a communication state.
In one embodiment, each air storage tank in the air storage tank group is connected through an air transmission pipeline, and each air storage tank is provided with an associated air transmission valve on the air transmission pipeline; the sampling points comprise a first sampling point and a second sampling point which are positioned on two sides of the gas transmission valve; comparing the air pressure value between different sampling points, obtaining the air pressure linkage change characteristics between different air storage tanks of the air storage tank group including: calculating the air pressure value change among different sampling points in the air storage tank group to obtain an air pressure linkage change sequence of the air storage tank group at the current moment; when atmospheric pressure linkage change characteristic accords with atmospheric pressure change threshold value condition, judge that the composite state between corresponding two gas holders is the connected state, include: judging the combination state between two corresponding gas storage tanks based on the gas pressure change characteristic value between the first sampling points associated with different gas storage tanks in the gas pressure linkage change sequence; judging the use state of each air storage tank on the basis of the air pressure change characteristic values of the first sampling point and the second sampling point associated with each air storage tank in the air pressure linkage change sequence; verifying the combination state of the corresponding air storage tanks according to the use states of the air storage tanks; when the verification is passed, the combined state between the respective two air tanks is determined as a connected state.
In one embodiment, the first sampling points comprise internal sampling points provided within the gas tanks and/or first pipeline sampling points provided between the gas tanks and associated gas transfer valves; or the second sampling point comprises a second pipeline sampling point arranged on one side of the gas transmission valve, which is deviated from the associated gas storage tank, and an equipment sampling point arranged on a gas transmission pipeline connecting the gas storage tank group to gas equipment.
In one embodiment, calculating the air pressure value change between different sampling points in the air tank group to obtain the air pressure linkage change sequence of the air tank group at the current moment comprises: when the first sampling points associated with the air storage tanks are multiple, calculating air pressure change characteristic values among the first sampling points of a first target number associated with different air storage tanks, and when the second sampling points associated with the air storage tanks are multiple, calculating air pressure change characteristic values of each air storage tank at the first sampling points of the first target number and the second sampling points of a second target number; and generating an air pressure linkage change sequence of the air storage tank group at the current moment based on the air pressure change characteristic value.
In one embodiment, the method further comprises: comparing the air pressure linkage change sequences of the air storage tank group at the current time and the previous time to obtain an air pressure linkage change trend sequence of the air storage tank group at the current sampling period; acquiring an air pressure linkage change trend sequence of the air storage tank group in the previous sampling period; and verifying the combination state of the corresponding gas storage tanks according to the consistency of the characteristic values of the gas pressure change among the sampling points in the gas pressure linkage change trend sequence of the adjacent sampling periods.
In one embodiment, the air pressure linkage change sequence comprises a time domain change sequence and a frequency domain change sequence; calculating the air pressure value change among different sampling points in the air storage tank group to obtain the air pressure linkage change sequence of the air storage tank group at the current moment, wherein the air pressure linkage change sequence comprises the following steps: calculating the air pressure difference value between different sampling points in the air storage tank group to obtain a time domain change sequence of the air storage tank group at the current moment; extracting the frequency domain characteristics of the air pressure value of each sampling point of the air storage tank group at the current moment to obtain a frequency domain change sequence of the air storage tank group at the current moment; the method further comprises the following steps: judging the combination state of each air storage tank based on the time domain change sequence; judging the combination state among the gas storage tanks based on the frequency domain change sequence; and verifying the combination state of the air tanks determined based on the time domain change sequence according to the combination state of the air tanks determined based on the frequency domain change sequence.
In one embodiment, the gas storage tanks of the gas storage tank group are connected through a gas transmission pipeline; the method further comprises the following steps: acquiring real scene data of a gas storage tank group; the real scene data comprises the topological structure of the gas storage tank group or the diameter of the gas transmission pipeline; and dynamically determining the air pressure change threshold condition corresponding to each air storage tank according to the real scene data.
A gas storage tank group combination state monitoring device comprises:
the air pressure acquisition module is used for acquiring the air pressure value of the air storage tank group at each sampling point;
the characteristic extraction module is used for comparing air pressure values among different sampling points to obtain air pressure linkage change characteristics among different air storage tanks of the air storage tank group;
and the state monitoring module is used for judging that the combination state between the two corresponding gas storage tanks is a communication state when the air pressure linkage change characteristic accords with an air pressure change threshold condition.
A gas storage tank group combination state monitoring system is characterized in that gas storage tanks in a gas storage tank group are connected through gas transmission pipelines, each gas storage tank is provided with an associated gas transmission valve on each gas transmission pipeline, sampling points are arranged on two sides of each gas transmission valve, the system comprises a storage and a processor, and a computer program is stored in the storage.
According to the method, the device, the system and the storage medium for monitoring the combined state of the gas storage tank groups, the combined state of the gas storage tank groups is judged by measuring the change condition of the gas pressure value of the gas storage tank groups, and compared with the traditional method for judging the combined state of the gas storage tank groups by reading the data of the closed state of the gas transmission valve between the gas storage tank groups, the method can carry out combined analysis and judgment on the gas pressure linkage change characteristics of each gas storage tank and the gas transmission pipeline under the condition that the gas pressure monitoring is only carried out on the gas storage tank groups and the data of the open state of the gas transmission valve between the gas storage tank groups is not read or cannot be read, so that the communication state between the gas storage tanks is obtained, thereby realizing the automatic judgment on the combined state of each gas storage tank of the gas storage tank groups, having obvious high efficiency and convenience, and improving the efficiency of test scheduling and management.
Drawings
FIG. 1 is a diagram illustrating an exemplary embodiment of an environment in which a method for monitoring the state of a group of gas storage tanks is applied;
FIG. 2 is a schematic flow chart illustrating a method for monitoring the status of a group of gas storage tanks in one embodiment;
FIG. 3 is a schematic flow chart illustrating the steps of extracting air pressure linkage variation characteristics between different air tanks of an air tank group according to one embodiment;
FIG. 4 is a graphical illustration of a pressure change curve based on pressure data in one embodiment;
FIG. 5 is a block diagram showing an exemplary embodiment of an apparatus for monitoring the state of a group of gas storage tanks;
FIG. 6A is a diagram of the internal structure of a monitoring device in one embodiment;
fig. 6B is an internal structural view of a monitoring device in another embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of and not restrictive on the broad application.
The method for monitoring the combined state of the gas storage tank group can be applied to a system for monitoring the combined state of the gas storage tank group as shown in fig. 1. The gas tank cluster 10 includes a plurality of gas tank modules 102, a gas transmission manifold 104O connecting the gas tank modules 102 to the gas-using equipment 20, and a gas inlet manifold 104I connecting the gas tank modules 102 to the gas-filling equipment 30. Each air reservoir assembly 102 includes an air reservoir 1022, an air delivery branch 1024O connecting the air reservoir 1022 to the air delivery manifold 104O, an air intake branch 1024I connecting the air reservoir 1022 to the air intake manifold 104I, an air delivery valve 1026O disposed in the air delivery branch 1024O, and an air intake valve 1026I disposed in the air intake branch 1024I. The air storage tank 1022 can be divided into high-pressure and medium-pressure air storage tank groups according to pressure grade, and is used for storing a large amount of compressed air by pressurization at idle, and providing compressed air resources for wind tunnel test equipment through an air transmission pipeline during testing. The delivery valve 1026O is configured to open and close each of the air tanks 1022, to adjust a combination state of the air tanks 1022, and to provide compressed air resources of different capacities as required.
Each air reservoir assembly 102 also includes a plurality of air pressure sensors 1028 positioned at different sampling points. For convenience of description, the sampling points in each air reservoir assembly 1022 are divided into a first sampling point and a second sampling point, bounded by the delivery valve 1026O and the intake valve 1026I. The first sampling point is a sampling point located on a side close to the air storage tank 1022, and may be one or more sampling points, opposite to the air delivery valve 1026O and the air intake valve 1026I. For example, an internal sampling point Aij provided within the air reservoir 1022, a first pipeline sampling point Bik provided between the air reservoir 1022 and the transfer valve 1026O or the intake valve 1026I, and so on. The second sampling point is located at a side of the gas consumer 20 opposite to the gas delivery valve 1026O and the gas inlet valve 1026I, and may be one or more sampling points. For example, a second pipe sampling point Cil, a device sampling point Dm provided on a gas delivery branch connecting the gas device 20 to the gas delivery main 104O, and the like. Wherein i is the serial number of the gas tank assembly 1022, and j, k, l, and m respectively represent the serial numbers of the corresponding types of sampling points.
The gas-using device 20 is connected to the gas storage tank 1022 through the gas transmission main 104O, the gas-using branch 1024X and the gas transmission branch 1024O, and is configured to receive gas resources such as compressed air from the gas storage tank 1022, which may be specifically wind tunnel experiment devices, heating devices, and the like. The gas filling device 30 is connected to the gas storage tank 1022 through the inlet manifold 104I and the inlet branch 1024I, and is configured to add gas resources such as compressed air into the gas storage tank 1022, specifically, a compressor and the like. The monitoring device 40 is configured to read air pressure data acquired by each air pressure sensor 1028 based on a preset data interface, and execute the method for monitoring the combination state of the air tank group provided by the present application, so as to monitor the combination state of each air tank 1022 in the air tank group 10. The monitoring device 40 may specifically be a terminal such as a personal computer, a notebook computer, a smart phone, a tablet computer, or a portable wearable device, or may be an independent server or a server cluster formed by a plurality of servers, which is not limited to this.
In one embodiment, as shown in fig. 2, a method for monitoring the status of a gas storage tank group combination is provided, which is illustrated by applying the method to the monitoring device 40 in fig. 1, and includes the following steps:
step S202, acquiring the air pressure value of the air storage tank group at each sampling point.
The monitoring device reads the air pressure data collected by each air pressure sensor 1028 according to a preset frequency based on a preset data interface. The air pressure data includes air pressure values within the air reservoir 1022 and at various sampling times on the various conduits. For example, at time t1, the air pressure values collected by the air pressure sensors are sequentially [ P ] t1-A11 ，P t1-A12 ，P t1-B11 ，P t1-B12 ，P t1-C11 ，P t1-C12 ，P t1-A21 ，P t1-A22 ，P t1-B21 ……P t1-Dm ]Preferably, the first and second electrodes are formed of a metal,the monitoring device 40 performs filtering and noise reduction on the air pressure data by using a filtering algorithm to obtain air pressure data with high signal-to-noise ratio, so as to improve the monitoring accuracy of the gas tank group combination state.
And step S204, comparing the air pressure values of different sampling points to obtain the air pressure linkage change characteristics among different air storage tanks of the air storage tank group.
In one embodiment, step S204 includes: and calculating the air pressure value change among different sampling points in the air storage tank group to obtain the air pressure linkage change sequence of the air storage tank group at the current moment.
Specifically, the monitoring device may calculate the air pressure difference between any two sampling points. For example, at time t1, the difference between the air pressures collected by the a11 air pressure sensor and the a21 air pressure sensor is Δ P t1-A11-A21 . The monitoring equipment generates an air pressure linkage change sequence [ delta P ] of the air storage tank group at the time t1 based on the air pressure difference value t1-A11-A12 ，ΔP t1-A11-B11 ，ΔP t1-A11-B12 ，ΔP t1-A11-C11 ，ΔP t1-A11-C12 ，ΔP t1-A12-B11 ，ΔP t1-A12-B12 ……ΔP t1-Aij-Dm ]. The switch of each gas storage tank corresponding to the gas transmission valve can cause the fluctuation of air flow in the whole gas storage tank group, and further the linkage change phenomenon exists in the mutual air pressure value. Based on the air pressure linkage change sequence, the monitoring equipment can monitor the air pressure linkage change characteristics of the air storage tank group in time. The monitoring device may also calculate the change in the air pressure value between any two sampling points in other ways, and the following description will mainly use "air pressure difference value" as an example.
And step S206, when the air pressure linkage change characteristic meets the air pressure change threshold condition, judging that the combination state between the two corresponding air storage tanks is a communication state.
The air pressure change threshold condition is the maximum value of air pressure change which is characterized in that the two air pressure sensors are in a communication state. The corresponding air pressure change threshold conditions may be different according to different ways of calculating the air pressure value change between sampling points. For example, when the air pressure linkage change sequence is composed of air pressure difference values, the corresponding air pressure change threshold condition may be the air pressure difference value Δ P max (ii) a When the air pressure is linked to changeWhen the sequence of variations is composed of a slope of a curve, the corresponding threshold condition for the change in barometric pressure may be the slope of the curve Δ K max (ii) a When the air pressure linkage change sequence is composed of air pressure change frequencies, the corresponding air pressure change threshold condition may be an air pressure difference value Δ H max 。
In another embodiment, the method for monitoring the assembled status of the group of gas storage tanks further includes: acquiring real scene data of a gas storage tank group; the real scene data comprises the topological structure of the gas storage tank group or the diameter of the gas transmission pipeline; and dynamically determining the air pressure change threshold condition corresponding to each air storage tank according to the real scene data.
The monitoring device can dynamically determine the air pressure change threshold condition according to the topological structure of the air storage tank group, and at least one of the distance between the air delivery valve and the air storage tank in each air storage tank assembly, the pipe diameter of the air delivery branch pipe, the type of the air delivery valve, the number of the air delivery valves, and the range and precision of the air pressure sensor. The topological structure of the gas storage tank group refers to the spatial layout position relationship, the distance and the like among the gas storage tanks in the gas storage tank group. The types of gas delivery valves include, but are not limited to, mechanical valves, air valves, electromagnetic valves, and the like. The monitoring device may comprehensively consider the real scene data based on a preset linear model or other machine learning models. For example, the threshold condition for a change in barometric pressure between barometric sensors A11 and A21 can be the product of range and accuracy of barometric sensor A11 plus the product of range and accuracy of barometric sensor A21, such as Δ P max-A11-A21 ＝2Kpa。
In one embodiment, as shown in fig. 3, step S206 includes:
step S2062, based on the air pressure change characteristic value between the first sampling points associated with different air storage tanks in the air pressure linkage change sequence, the combination state between the two corresponding air storage tanks is judged.
The air pressure value between different sampling points in the air pressure linkage change sequence changes, and the communication state between different air storage tanks or the use state of a single air storage tank can be reflected. It will be readily appreciated that comparison of the air pressure data at the first sampling point on the two tank assemblies will determine whether there is communication between the two tanks, for example, when Δ P t1-A11-A21 ＜ΔP max-A11-A21 When the air storage tank 1 is communicated with the air storage tank 2, the air storage tank can be preliminarily judged; otherwise, the state is judged to be unconnected.
When there are a plurality of first sampling points of one gas storage tank, there are also a plurality of sets of pressure difference values for determining the communication state between the corresponding two gas storage tanks, for example, the pressure difference value for determining the use state of the No. 1 gas storage tank and the No. 2 gas storage tank includes Δ P t1-A11-A21 ，ΔP t1-A12-A21 ，ΔP t1-A11-A22 And Δ P t1-A12-A22 . The monitoring device can judge the probability that the two corresponding gas storage tanks are in a communicated state according to the proportion of the gas pressure difference values meeting the corresponding gas pressure change threshold value conditions. When the probability reaches a preset value, the monitoring equipment judges that the two corresponding gas storage tanks are in a communicated state; otherwise, the air storage tank is judged to be in an unconnected state. The air pressure difference values of multiple groups are mutually verified, and the accuracy of identifying the communication state between the air storage tanks can be improved.
And S2064, judging the use state of each air storage tank on the basis of the air pressure change characteristic values of the first sampling point and the second sampling point associated with each air storage tank in the air pressure linkage change sequence.
Comparing the air pressure data between the first sampling point and the second sampling point on the same air storage tank assembly can determine whether the air delivery valve and the air inlet valve corresponding to the air storage tank are opened or not, and further determine the use state and the air inlet state of the air storage tank, for example, when the Δ P is reached t1-B11-C11 ＜ΔP max-B11-C11 When the air storage tank is in the use state, the air transmission valve between the B11 air pressure sensor and the C11 air pressure sensor can be preliminarily judged to be opened, and then the No. 1 air storage tank is judged to be in the use state.
When there are a plurality of first sampling points or second sampling points of one air storage tank, there are also a plurality of groups of air pressure difference values for determining the using state of the air storage tank, for example, the air pressure difference value for determining the using state of No. 1 air storage tank includes delta P t1-A11-C12 ，ΔP t1-A12-C12 ，ΔP t1-B11-C12 ，ΔP t1-B12-C12 And the like. The monitoring device can judge the probability of the air storage tank in the use state according to the proportion of the air pressure difference values meeting the corresponding air pressure change threshold value conditions. When the probability reaches a preset value, the monitoring equipmentJudging that the air storage tank is in a use state; otherwise, the air storage tank is judged to be in a closed state. The air pressure difference values of a plurality of groups are mutually verified, so that the identification accuracy of the using state of the air storage tank can be improved.
And S2066, verifying the combination state of the corresponding air storage tanks according to the use state of the air storage tanks.
In step S2068, when the verification is passed, the combined state between the respective two air tanks is determined as the connected state.
When the two gas storage tanks are in a use state, the monitoring equipment confirms the primary judgment result that the two corresponding gas storage tanks are in a communication state; otherwise, the verification fails, and the judgment result that the two gas storage tanks are in the connected state is marked as to-be-verified or the two gas storage tanks are corrected to be in the unconnected state. When one air storage tank is in a closed state, the monitoring equipment confirms the primary judgment result that the two corresponding air storage tanks are in an unconnected state; otherwise, the verification fails, and the judgment result that the two air storage tanks are in the unconnected state is marked to be verified or corrected to be in the connected state, so that the combined state of whether any two air storage tanks are connected or not at the time of t1 can be obtained. According to the using state of the gas storage tanks, the combination state between the corresponding gas storage tanks is verified, and the monitoring accuracy of the combination state of the gas storage tank group can be improved.
The monitoring equipment automatically and circularly executes the method for monitoring the combination state of the gas storage tank group, and judges the real-time combination state of the gas storage tank group through continuous monitoring of gas pressure, so that the real-time and accurate combination state of the gas storage tank group is provided for subsequent gas resource management. And dynamically updating and displaying the monitoring result of the combination state of the gas storage tank group by the monitoring equipment, or sending the monitoring result to other display equipment for displaying.
In the embodiment, the combination state among the gas storage tank groups is judged by measuring the change condition of the air pressure value of the gas storage tank groups, and compared with the traditional method for judging the combination state among the gas storage tank groups by reading the closing state data of the gas transmission valves among the gas storage tank groups, the method can carry out combined analysis and judgment on the air pressure linkage change characteristics of each gas storage tank and a gas transmission pipeline under the condition that the air pressure is only monitored and the opening and closing state data of the gas transmission valves among the gas storage tank groups is not read or cannot be read, so that the communication state among the gas storage tanks is obtained, thereby realizing the automatic judgment on the combination state among the gas storage tanks of the gas storage tank groups, having obvious high efficiency and convenience, and improving the test scheduling and management efficiency.
In one embodiment, step S204 includes:
step S2042, when a plurality of first sampling points associated with the gas storage tank are available, calculating a characteristic value of the gas pressure change between the first sampling points of the first target number associated with different gas storage tanks.
Step S2044, when there are a plurality of second sampling points associated with the gas storage tank, calculating a gas pressure change characteristic value of each gas storage tank between the associated first sampling points of the first target number and the associated second sampling points of the second target number.
Step S2046, based on the air pressure change characteristic value, generating an air pressure linkage change sequence of the air storage tank group at the current moment.
When the first sampling points of one gas storage tank are multiple and exceed the first target number, in order to reduce the calculation amount and improve the monitoring efficiency, the monitoring equipment can randomly select several groups of the first target number for calculation at multiple groups of corresponding air pressure difference values for judging the communication state between the two corresponding gas storage tanks. When the first sampling point or the second sampling point of one air storage tank is multiple and exceeds the second target number, the monitoring device can also select several groups of the second target number from the corresponding multiple groups of the air pressure difference values for judging the use state of the air storage tank to calculate.
The monitoring device is also used for gas leakage fault monitoring. For example, when the variation of the air pressure value between different first sampling points in the same air tank assembly exceeds the air leakage threshold value, or the variation of the air pressure value between a plurality of second sampling points in the same air tank assembly exceeds the air leakage threshold value, it is determined that air leakage exists on the air tank or the air transmission branch pipe connected with the air tank.
In another embodiment, to reduce the amount of computation and improve the monitoring efficiency, the monitoring device does not calculate the variation in the air pressure between the first sampling points of the same tank assembly, and does not calculate the variation in the air pressure between the second sampling points of the same tank assembly.
In this embodiment, the first target number and the second target number are set, so that the calculation amount can be appropriately reduced under the condition that the accuracy of the determination result is ensured, and the balance between the monitoring accuracy and the monitoring efficiency is realized.
In an embodiment, the method for monitoring the combination status of the group of gas storage tanks further includes: comparing the air pressure linkage change sequences of the air storage tank group at the current moment and the previous moment to obtain an air pressure linkage change trend sequence of the air storage tank group in the current sampling period; acquiring an air pressure linkage change trend sequence of the air storage tank group in the previous sampling period; and verifying the combination state of the corresponding gas storage tanks according to the consistency of the air pressure change characteristic values between the sampling points in the air pressure linkage change trend sequence of the adjacent sampling periods.
The air pressure linkage change trend sequence of the current sampling period includes the difference (recorded as the air pressure change trend value) of each corresponding sequence value in the air pressure linkage change sequence at the current time t2 and the air pressure linkage change sequence at the previous time t1, delta Q 21 [＝ΔP t2-A11-A12 -ΔP t1-A11-A12 ，ΔP t2-A11-B11 -ΔP t1-A11-B11 ，ΔP t2-A11-B12 -ΔP t1-A11-B12 ，ΔP t2-A11-C11 -ΔP t1-A11-C11 ，ΔP t2-A11-C12 -ΔP t1-AA11-C12 ，ΔP t2-A12-B11 -ΔP t1-A12-B11 ……ΔP t2-Aij-Dm -ΔP t1-Aij-Dm ]. And the monitoring equipment compares the consistency of each air pressure change trend value in the air pressure linkage change trend sequence of two adjacent sampling periods. When the consistency meets the preset condition, the monitoring result confirms the corresponding judgment result; otherwise, the verification fails.
In this embodiment, by comparing the air pressure linkage change trend sequences of two adjacent sampling periods, the monitoring time span can be extended, and the accuracy of the preliminary determination result of the air storage tank group combination state obtained based on the air pressure linkage change characteristics between the sampling points at a single moment is further ensured.
In one embodiment, the pneumatic linkage change sequence comprises a time domain change sequence and a frequency domain change sequence; step S204 includes: calculating the air pressure difference value between different sampling points in the air storage tank group to obtain a time domain change sequence of the air storage tank group at the current moment; extracting the frequency domain characteristics of the air pressure value of each sampling point of the air storage tank group at the current moment to obtain a frequency domain change sequence of the air storage tank group at the current moment; the method for monitoring the combined state of the gas storage tank group further comprises the following steps: judging the combination state of each air storage tank based on the time domain change sequence; judging the combination state among the gas storage tanks based on the frequency domain change sequence; and verifying the combination state of the air tanks determined based on the time domain change sequence according to the combination state of the air tanks determined based on the frequency domain change sequence.
The frequency domain data can reflect the more detailed characteristics of the air pressure change compared with the time domain data. In this embodiment, the time-domain discrete air pressure data read by the monitoring device is subjected to fourier transform to obtain frequency-domain air pressure data. In another embodiment, as shown in fig. 4, the monitoring device may also plot the monitoring time period [ t0, t1 ] of each air pressure sensor at the time t1 based on the read time-domain air pressure data]And the air pressure change curve in the frequency domain is subjected to Fourier transform to obtain frequency domain air pressure data. The abscissa of the air pressure change curve is the sampling time, the ordinate is the air pressure value, and the series 1-10 respectively represent different air pressure sensors. The monitoring equipment calculates the air pressure change frequency delta H between any two sampling points based on the frequency domain air pressure data t1-A11-A21 ＝|H A11(t1-t0) -H A21(t1-t0) And further generating a frequency domain change sequence of the gas storage tank group at the time t 1.
The monitoring equipment judges the combination state between two corresponding gas storage tanks according to the gas storage tank group combination state monitoring method based on the frequency domain change characteristic values between the first sampling points associated with different gas storage tanks in the frequency domain change sequence; determining the use state of each gas storage tank based on the frequency domain change characteristic values of each gas storage tank at the associated first sampling point and second sampling point in the frequency domain change sequence; verifying the combination state of the corresponding gas storage tanks according to the use states of the gas storage tanks; when the verification is passed, the combined state between the respective two air tanks is determined as a connected state.
In another embodiment, the monitoring device may further calculate a slope of each of the pressure change curves to obtain a slope change sequence. For example, the slope of the curve of the air pressure sensor A11 is K A11(t1-t0) The slope of the curve of the baroceptor A21 is K A21(t1-t0) Then the slope of the curve between A11 and A21 is Δ K t1-A11-A21 ＝|K A11(t1-t0) -K A21(t1-t0) L. the method is used for the preparation of the medicament. And the monitoring equipment generates a slope change sequence of the gas storage tank group at the time t1 based on the curve change and the slope. The monitoring equipment judges the combination state of each gas storage tank based on the slope change sequence; determining a combination state between the air storage tanks based on the slope change sequence; and verifying the combination state between the air tanks determined based on the time domain change sequence according to the combination state between the air tanks determined based on the slope change sequence.
The application provides a verification mechanism for the judgment result of the combined state of multiple gas tank groups, the specific implementation can select one or more verification mechanisms according to actual requirements, when each selected verification mechanism passes verification, the monitoring equipment confirms the judgment result, and the accuracy of the monitoring result of the combined state of the gas tank groups is improved through multiple dimensions.
It should be understood that although the various steps in the flow diagrams of fig. 2-3 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not limited to being performed in the exact order illustrated and, unless explicitly stated herein, may be performed in other orders. Moreover, at least some of the steps in fig. 2-3 may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed in sequence, but may be performed in turn or alternately with other steps or at least some of the other steps.
In one embodiment, as shown in fig. 5, there is provided a gas tank group combination status monitoring apparatus 500, including: an air pressure acquisition module 502, a feature extraction module 504, and a status monitoring module 506, wherein:
and the air pressure acquisition module 502 is used for acquiring the air pressure value of the air storage tank group at each sampling point.
And the characteristic extraction module 504 is configured to compare air pressure values between different sampling points to obtain air pressure linkage change characteristics between different air storage tanks of the air storage tank group.
And the state monitoring module 506 is configured to determine that the combination state between the two corresponding air storage tanks is a communication state when the air pressure linkage change characteristic meets an air pressure change threshold condition.
In one embodiment, each air storage tank in the air storage tank group is connected through an air transmission pipeline, and each air storage tank is provided with an associated air transmission valve on the air transmission pipeline; the sampling points comprise a first sampling point and a second sampling point which are positioned on two sides of the gas transmission valve; the characteristic extraction module 504 is further configured to calculate a change in air pressure value between different sampling points in the air tank group, so as to obtain an air pressure linkage change sequence of the air tank group at the current time; the state monitoring module 506 is further configured to determine a combination state between two corresponding gas storage tanks based on a gas pressure change characteristic value between first sampling points associated with different gas storage tanks in the gas pressure linkage change sequence; judging the use state of each air storage tank based on the air pressure change characteristic values of each air storage tank at the associated first sampling point and second sampling point in the air pressure linkage change sequence; verifying the combination state of the corresponding air storage tanks according to the use states of the air storage tanks; when the verification is passed, the combined state between the respective two air tanks is determined as a connected state.
In one embodiment, the first sampling points comprise internal sampling points provided within the air tanks and/or first pipeline sampling points provided between the air tanks and associated gas transfer valves; or the second sampling point comprises a second pipeline sampling point arranged on one side of the gas transmission valve, which is deviated from the associated gas storage tank, and an equipment sampling point arranged on a gas transmission pipeline connecting the gas storage tank group to gas equipment.
In one embodiment, the characteristic extraction module 504 is further configured to calculate a characteristic value of a change in air pressure between a first target number of first sampling points associated with different air tanks when the first sampling points associated with the air tanks are multiple, and calculate a characteristic value of a change in air pressure of each air tank between the associated first target number of first sampling points and a second target number of second sampling points when the second sampling points associated with the air tanks are multiple; and generating an air pressure linkage change sequence of the air storage tank group at the current moment based on the air pressure change characteristic value.
In one embodiment, as shown in fig. 5, the apparatus for monitoring combination status of gas storage tank group further includes a linkage change trend verification module 508, configured to compare the air pressure linkage change sequences of the gas storage tank group at the current time and the previous time to obtain an air pressure linkage change trend sequence of the gas storage tank group in the current sampling period; acquiring an air pressure linkage change trend sequence of the air storage tank group in the previous sampling period; and verifying the combination state of the corresponding gas storage tanks according to the consistency of the air pressure change characteristic values between the sampling points in the air pressure linkage change trend sequence of the adjacent sampling periods.
In one embodiment, the air pressure linkage change sequence comprises a time domain change sequence and a frequency domain change sequence; the characteristic extraction module 504 is further configured to calculate a gas pressure difference value between different sampling points in the gas tank group, so as to obtain a time domain variation sequence of the gas tank group at the current time; extracting the frequency domain characteristics of the air pressure value of each sampling point of the air storage tank group at the current moment to obtain a frequency domain change sequence of the air storage tank group at the current moment; as shown in fig. 5, the device for monitoring the combined state of the gas storage tank group further includes a frequency domain linkage change verification module 510, configured to determine the combined state between the gas storage tanks based on the time domain change sequence; judging the combination state among the air storage tanks based on the frequency domain change sequence; and verifying the combination state of the air tanks determined based on the time domain change sequence according to the combination state of the air tanks determined based on the frequency domain change sequence.
In one embodiment, the gas storage tanks of the gas storage tank group are connected through a gas transmission pipeline; as shown in fig. 5, the device for monitoring the combination status of the gas storage tank group further includes a threshold dynamic determination module 512, configured to obtain real scene data of the gas storage tank group; the real scene data comprises the topological structure of the gas storage tank group or the diameter of the gas transmission pipeline; and dynamically determining the air pressure change threshold condition corresponding to each air storage tank according to the real scene data.
For specific limitations of the gas tank group combination status monitoring device, reference may be made to the above limitations of the gas tank group combination status monitoring method, which will not be described herein again. All modules in the gas storage tank group combination state monitoring device can be completely or partially realized through software, hardware and combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
In one embodiment, a gas storage tank group combination status monitoring system is provided, as shown in fig. 1. The monitoring device may be a server, and its internal structure diagram may be as shown in fig. 6A. The monitoring device includes a processor, a memory, and a network interface connected by a system bus. Wherein the processor of the monitoring device is configured to provide computing and control capabilities. The memory of the monitoring device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The database of the computer device is used for storing air pressure data. The network interface of the monitoring device is used for communicating with an external computer device through network connection. The computer program is executed by a processor to implement a method for monitoring the state of a group of gas storage tanks. In another embodiment, the monitoring device may be a terminal, and the internal structure thereof may be as shown in fig. 6B. The monitoring device comprises a processor, a memory, a communication interface, a display screen and an input device which are connected through a system bus. Wherein the processor of the monitoring device is configured to provide computational and control capabilities. The memory of the monitoring device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operating system and the computer program to run on the non-volatile storage medium. The communication interface of the monitoring device is used for communicating with an external terminal in a wired or wireless mode, and the wireless mode can be realized through WIFI, an operator network, NFC (near field communication) or other technologies. The computer program is executed by a processor to implement a method for monitoring the status of a group of gas storage tanks. The display screen of the monitoring device can be a liquid crystal display screen or an electronic ink display screen, and the input device of the monitoring device can be a touch layer covered on the display screen, a key, a track ball or a touch pad arranged on the shell of the monitoring device, an external keyboard, a touch pad or a mouse and the like.
It will be understood by those skilled in the art that the configurations shown in fig. 6A-6B are merely block diagrams of some of the configurations associated with the teachings of the present application and do not constitute a limitation on the monitoring devices to which the teachings of the present application may be applied, and that a particular monitoring device may include more or fewer components than those shown, or may combine certain components, or have a different arrangement of components.
In one embodiment, a computer-readable storage medium is provided, having a computer program stored thereon, which when executed by a processor, performs the steps of:
acquiring the air pressure value of the air storage tank group at each sampling point;
comparing the air pressure values of different sampling points to obtain the air pressure linkage change characteristics among different air storage tanks of the air storage tank group;
and when the air pressure linkage change characteristic meets the air pressure change threshold condition, judging that the combination state between the two corresponding air storage tanks is a communication state.
In one embodiment, each air storage tank in the air storage tank group is connected through an air transmission pipeline, and each air storage tank is provided with an associated air transmission valve on the air transmission pipeline; the sampling points comprise a first sampling point and a second sampling point which are positioned on two sides of the gas transmission valve; the computer program when executed by the processor further realizes the steps of: calculating the air pressure value change among different sampling points in the air storage tank group to obtain an air pressure linkage change sequence of the air storage tank group at the current moment; judging the combination state between two corresponding gas storage tanks based on the gas pressure change characteristic value between the first sampling points associated with different gas storage tanks in the gas pressure linkage change sequence; judging the use state of each air storage tank on the basis of the air pressure change characteristic values of the first sampling point and the second sampling point associated with each air storage tank in the air pressure linkage change sequence; verifying the combination state of the corresponding air storage tanks according to the use states of the air storage tanks; when the verification is passed, the combined state between the respective two air tanks is determined as a connected state.
In one embodiment, the first sampling points comprise internal sampling points provided within the gas tanks and/or first pipeline sampling points provided between the gas tanks and associated gas transfer valves; or the second sampling point comprises a second pipeline sampling point arranged on one side of the gas transmission valve, which is deviated from the associated gas storage tank, and an equipment sampling point arranged on a gas transmission pipeline connecting the gas storage tank group to gas equipment.
In one embodiment, the computer program when executed by the processor further performs the steps of: when the first sampling points associated with the air storage tanks are multiple, calculating air pressure change characteristic values among the first sampling points of a first target number associated with different air storage tanks, and when the second sampling points associated with the air storage tanks are multiple, calculating air pressure change characteristic values of each air storage tank at the first sampling points of the first target number and the second sampling points of a second target number; and generating an air pressure linkage change sequence of the air storage tank group at the current moment based on the air pressure change characteristic value.
In one embodiment, the computer program when executed by the processor further performs the steps of: comparing the air pressure linkage change sequences of the air storage tank group at the current moment and the previous moment to obtain an air pressure linkage change trend sequence of the air storage tank group in the current sampling period; acquiring an air pressure linkage change trend sequence of the air storage tank group in the previous sampling period; and verifying the combination state of the corresponding gas storage tanks according to the consistency of the characteristic values of the gas pressure change among the sampling points in the gas pressure linkage change trend sequence of the adjacent sampling periods.
In one embodiment, the air pressure linkage change sequence comprises a time domain change sequence and a frequency domain change sequence; the computer program when executed by the processor further realizes the steps of: calculating the air pressure difference value between different sampling points in the air storage tank group to obtain a time domain change sequence of the air storage tank group at the current moment; extracting the frequency domain characteristics of the air pressure value of each sampling point of the air storage tank group at the current moment to obtain a frequency domain change sequence of the air storage tank group at the current moment; judging the combination state of each air storage tank based on the time domain change sequence; judging the combination state among the gas storage tanks based on the frequency domain change sequence; and verifying the combination state of the air tanks determined based on the time domain change sequence according to the combination state of the air tanks determined based on the frequency domain change sequence.
In one embodiment, the gas storage tanks of the gas storage tank group are connected through a gas transmission pipeline; the computer program when executed by the processor further realizes the steps of: acquiring real scene data of a gas storage tank group; the real scene data comprises the topological structure of the gas storage tank group or the diameter of the gas transmission pipeline; and dynamically determining the air pressure change threshold condition corresponding to each air storage tank according to the real scene data.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above may be implemented by hardware that is instructed by a computer program, and the computer program may be stored in a non-volatile computer-readable storage medium, and when executed, may include the processes of the embodiments of the methods described above. Any reference to memory, storage, database or other medium used in the embodiments provided herein can include at least one of non-volatile and volatile memory. Non-volatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical storage, or the like. Volatile Memory can include Random Access Memory (RAM) or external cache Memory. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), among others.
All possible combinations of the technical features in the above embodiments may not be described for the sake of brevity, but should be considered as being within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features. The above examples only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention.
Claims (9)
1. A method for monitoring the status of a group of gas storage tanks, the method comprising:
acquiring the air pressure value of the air storage tank group at each sampling point, wherein each air storage tank in the air storage tank group is connected through an air transmission pipeline, each air storage tank is provided with an associated air transmission valve on the air transmission pipeline, and the sampling points comprise a first sampling point and a second sampling point which are positioned on two sides of the air transmission valve;
comparing the air pressure values between different sampling points to obtain the air pressure linkage change characteristics between different air storage tanks of the air storage tank group, and the method comprises the following steps:
calculating the air pressure value change among different sampling points in the air storage tank group to obtain an air pressure linkage change sequence of the air storage tank group at the current moment;
when the atmospheric pressure linkage change characteristic accords with atmospheric pressure change threshold value condition, judge that the composite state between corresponding two gas holders is the connected state, include:
determining a combination state between two corresponding gas storage tanks based on a gas pressure change characteristic value between first sampling points associated with different gas storage tanks in the gas pressure linkage change sequence;
judging the use state of each air storage tank based on the air pressure change characteristic values of the air storage tanks at the associated first sampling point and second sampling point in the air pressure linkage change sequence;
verifying the combination state of the corresponding air storage tanks according to the use states of the air storage tanks;
when the verification is passed, the combined state between the respective two air tanks is determined as a connected state.
2. The method of claim 1, wherein the first sampling points comprise internal sampling points provided within the gas tank and/or first pipeline sampling points provided between the gas tank and an associated gas transfer valve; or the second sampling point comprises a second pipeline sampling point arranged on one side of the gas transmission valve, which is deviated from the associated gas storage tank, and an equipment sampling point arranged on a gas transmission pipeline connecting the gas storage tank group to gas equipment.
3. The method of claim 1, wherein the step of calculating the air pressure value change between different sampling points in the air tank group to obtain the air pressure linkage change sequence of the air tank group at the current time comprises:
when the first sampling points associated with the air storage tanks are multiple, calculating air pressure change characteristic values between first sampling points of a first target number associated with different air storage tanks, and when the second sampling points associated with the air storage tanks are multiple, calculating air pressure change characteristic values of each air storage tank at the first sampling points of the first target number and the second sampling points of a second target number associated with the air storage tank;
and generating an air pressure linkage change sequence of the air storage tank group at the current moment based on the air pressure change characteristic value.
4. The method according to any one of claims 1-3, further comprising:
comparing the air pressure linkage change sequences of the air storage tank group at the current time and the previous time to obtain an air pressure linkage change trend sequence of the air storage tank group at the current sampling period;
acquiring an air pressure linkage change trend sequence of the air storage tank group in the previous sampling period;
and verifying the combination state of the corresponding gas storage tanks according to the consistency of the characteristic values of the gas pressure change among the sampling points in the gas pressure linkage change trend sequence of the adjacent sampling periods.
5. The method of any one of claims 1-3, wherein the pneumatic linkage change sequence comprises a time domain change sequence and a frequency domain change sequence; the calculation of the air pressure value change between different sampling points in the air storage tank group to obtain the air pressure linkage change sequence of the air storage tank group at the current moment comprises the following steps:
calculating the air pressure difference value between different sampling points in the air storage tank group to obtain a time domain change sequence of the air storage tank group at the current moment;
extracting the frequency domain characteristics of the air pressure value of each sampling point of the air storage tank group at the current moment to obtain a frequency domain change sequence of the air storage tank group at the current moment;
the method further comprises the following steps:
determining a combination state among the gas storage tanks based on the time domain variation sequence;
determining a combination state among the gas storage tanks based on the frequency domain variation sequence;
and verifying the combination state of the air tanks determined based on the time domain change sequence according to the combination state of the air tanks determined based on the frequency domain change sequence.
6. The method of claim 1, wherein each of said plurality of tanks is connected by a gas transmission pipeline;
the method further comprises the following steps:
acquiring real scene data of the gas storage tank group; the real scene data comprises the topological structure of the gas storage tank group or the diameter of the gas transmission pipeline;
and dynamically determining the air pressure change threshold value condition corresponding to each air storage tank according to the real scene data.
7. A gas storage tank group combination state monitoring device, characterized in that the device includes:
the air pressure acquisition module is used for acquiring the air pressure value of the air storage tank group at each sampling point, wherein each air storage tank in the air storage tank group is connected through an air transmission pipeline, each air storage tank is provided with an associated air transmission valve on the air transmission pipeline, and the sampling points comprise a first sampling point and a second sampling point which are positioned on two sides of the air transmission valve;
the characteristic extraction module is used for comparing the air pressure values among different sampling points to obtain the air pressure linkage change characteristics among different air storage tanks of the air storage tank group, and comprises:
calculating the air pressure value change among different sampling points in the air storage tank group to obtain an air pressure linkage change sequence of the air storage tank group at the current moment;
the state monitoring module is used for when atmospheric pressure linkage change characteristic accords with atmospheric pressure change threshold value condition, judges that the combination state between two corresponding gas holders is the connected state, includes:
determining a combination state between two corresponding gas storage tanks based on a gas pressure change characteristic value between first sampling points associated with different gas storage tanks in the gas pressure linkage change sequence;
judging the use state of each air storage tank based on the air pressure change characteristic value of each air storage tank at the associated first sampling point and second sampling point in the air pressure linkage change sequence;
verifying the combination state of the corresponding air storage tanks according to the use states of the air storage tanks;
when the verification is passed, the combined state between the respective two air tanks is determined as a connected state.
8. A gas tank cluster health monitoring system comprising a memory and a processor, the memory storing a computer program, wherein the processor implements the steps of the method according to any one of claims 1 to 6 when executing the computer program.
9. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 6.
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