CN119356452A - Real-time risk management and control system for microchannel media based on multivariable measurement - Google Patents
Real-time risk management and control system for microchannel media based on multivariable measurement Download PDFInfo
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Abstract
The invention relates to the technical field of micro-reactor equipment, in particular to a micro-channel medium real-time risk management and control system based on multivariable measurement, which comprises an initial state judging module, a risk management and control plan matching module, a first monitoring sub-channel analyzing module, a second monitoring sub-channel judging module and a risk management and control plan regulating module, wherein the initial state data of a micro-channel inlet medium is firstly obtained, the initial stability is estimated, the time length of passing through a first monitoring sub-channel is estimated, and comparing the actual time length with the estimated time length, checking and then matching the risk management and control plan of the second monitoring sub-channel, analyzing the actual passing data of the first monitoring sub-channel to obtain a real-time risk assessment index, matching a first stability index, obtaining the state data of the second monitoring sub-channel, judging the stability assessment index, comparing the stability assessment index with the first stability index, and judging whether to regulate and control the risk management and control plan according to the comparison result so as to improve the real-time management and control efficiency of the micro-channel medium and the use stability of the micro-channel.
Description
Technical Field
The invention relates to the technical field of micro-reactor equipment, in particular to a micro-channel medium real-time risk management and control system based on multi-variable measurement.
Background
The micro-channel technology is a technology for controlling and processing fluid under the micro-scale, has the advantages of high efficiency, energy conservation, environmental protection and the like, is widely applied to the fields of chemical industry, material science, biomedicine and the like, and along with the continuous development of the micro-channel technology, the application range and the complexity of the micro-channel technology are also continuously increased, and higher requirements are put forward on risk management and control, so that a system capable of monitoring a plurality of variables (such as temperature, pressure, flow, concentration and the like) is required to be developed for realizing real-time risk management and control of a micro-channel medium, so that potential safety hazards can be timely found and processed.
For example, the invention patent with the publication number of CN117369551A discloses a precise temperature control device and a precise temperature control method, which relate to the technical field of precise instrument testing and comprise a cooling medium temperature control system communicated with a cooling medium transmission pipeline, a temperature control module, a precise temperature control controller and a micro-channel cold plate heat exchanger, wherein the cooling medium transmission pipeline is communicated with the micro-channel cold plate heat exchanger, the temperature control module is placed on the micro-channel cold plate heat exchanger, the temperature control module comprises a low-power density precise temperature control module, a high-power density precise temperature control module and a heat dissipation non-temperature control module, and the precise temperature control controller is placed on the micro-channel cold plate heat exchanger.
By combining the technical scheme, the technical scheme of the micro-channel reactor exists, analysis of the control effect of the micro-channel reactor is excessively stressed, and the operation risk of the micro-channel reactor in the use process is ignored, so that the control effect of the micro-channel reactor is reduced, and finally the use of the micro-channel is influenced.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a multichannel medium real-time risk management and control system based on multivariate measurement, which can effectively solve the problems related to the background art.
The method comprises the steps of acquiring real-time initial state data of a medium passing through a first monitoring sub-channel, judging initial stability evaluation indexes of the micro-channel medium by matching, acquiring estimated time length of the micro-channel medium passing through the first monitoring sub-channel, checking the estimated time length of the micro-channel medium passing through the first monitoring sub-channel with the estimated time length of the micro-channel medium passing through the first monitoring sub-channel, acquiring and according to a checking result, matching risk management and control plans of the micro-channel medium passing through a second monitoring sub-channel, analyzing real-time risk evaluation indexes of the micro-channel medium passing through the first monitoring sub-channel by the first monitoring sub-channel analysis module, acquiring stability evaluation indexes of the micro-channel medium passing through the first monitoring sub-channel by matching, judging whether the micro-channel medium passes through the first monitoring sub-channel by the second monitoring sub-channel judgment module, comparing the risk management and control plans of the micro-channel medium passing through the first monitoring sub-channel with the second monitoring sub-channel by the first monitoring sub-channel, judging whether the stability evaluation indexes of the micro-channel medium passes through the first monitoring sub-channel by the first monitoring sub-channel are obtained, and judging whether the stability evaluation indexes of the micro-channel pass through the first monitoring sub-channel are stable state data of the first monitoring sub-channel is obtained.
The method comprises the steps of determining initial stability evaluation indexes of a micro-channel medium, wherein the specific determination process comprises the steps of determining real-time initial state data of the micro-channel medium, extracting medium reference flow rate, medium reference temperature, medium reference concentration and medium reference pH value from a micro-channel medium database, and comprehensively analyzing to obtain initial stability evaluation indexes of the micro-channel medium according to the initial flow rate of the micro-channel medium at the inlet time point, the initial temperature of the micro-channel medium at the inlet time point, the initial concentration of the micro-channel medium at the inlet time point and the initial pH value of the micro-channel medium at the inlet time point, wherein the initial stability evaluation indexes comprise the following steps:
;
In the formula, For an initial stability assessment index of the microchannel media,For the initial flow rate of the medium of the microchannel medium at the inlet time point,For the medium to be referenced to the flow rate,For the initial medium temperature of the microchannel medium at the inlet time point,For the reference temperature of the medium,For the initial concentration of the medium of the microchannel medium at the inlet time point,For the reference concentration of the medium,The initial ph of the medium at the inlet time point for the microchannel medium,The pH value is initially referred to for the medium, and e is a natural constant.
The method comprises the steps of obtaining a first monitoring sub-channel, obtaining a second monitoring sub-channel, obtaining a first check result or a second check result, wherein the first check result is that the actual time length of the micro-channel medium passing through the first monitoring sub-channel is equal to the estimated time length of the micro-channel medium passing through the first monitoring sub-channel, the second check result is that the actual time length of the micro-channel medium passing through the first monitoring sub-channel is not equal to the estimated time length of the micro-channel medium passing through the first monitoring sub-channel, when the check result is displayed as the first check result, directly extracting an initial risk control plan with the estimated time length being matched from a micro-channel medium database, and recording the initial risk control plan as the risk control plan of the micro-channel medium passing through the second monitoring sub-channel, and when the check result is displayed as the second check result, extracting the initial risk control plan with the actual time length being matched from the micro-channel medium database, and recording the estimated time length of the micro-channel medium passing through the second monitoring sub-channel.
The method comprises the steps of sequentially arranging the medium flow rates of the micro-channel medium at each first passing time point according to the sequence from large to small, and recording the medium flow rates ranked at the first position as the medium maximum flow rate of the micro-channel medium in a first passing period; according to the initial stable evaluation index of the micro-channel medium, the medium reference flow corresponding to the predefined initial flow rate interval of each medium is obtained, the pressure-bearing adaptive value is obtained, according to the current value generated by the micro-channel medium at each first passing time point, the current change fold line of the micro-channel medium in the first passing period is constructed, a plurality of first passing time points corresponding to the current value larger than the predefined current reference value are extracted from the current change fold line and recorded as the abnormal current number of the micro-channel medium in the first monitoring sub-channel, the pressure-bearing adaptive value is obtained from the micro-channel medium database, according to the maximum flow rate of the medium of the micro-channel medium in the first passing period, the medium flow of the micro-channel medium in the first passing period, the maximum pressure value born by the first monitoring sub-channel in the first passing period and the abnormal current of the micro-channel medium in the first monitoring sub-channel, and matching the real-time risk evaluation index of the micro-channel medium passing through the first monitoring sub-channel with the stability evaluation index corresponding to each predefined real-time risk evaluation index interval so as to obtain the stability evaluation index of the micro-channel medium passing through the first monitoring sub-channel.
The method comprises the steps of judging a stability evaluation index of a micro-channel medium in a second monitoring sub-channel, wherein the specific judgment process comprises the steps of carrying out standard deviation processing on medium temperature of the micro-channel medium at each second passing time point to obtain medium temperature stability coefficients of the micro-channel medium in a second passing period, carrying out difference processing on the ending time point of the micro-channel medium passing through the second monitoring sub-channel and the starting time point of the micro-channel medium passing through the second monitoring sub-channel to obtain flow time of the micro-channel medium passing through the second monitoring sub-channel, carrying out matching on the flow reference time corresponding to a preset stability evaluation index interval of each first monitoring sub-channel according to the stability evaluation index of the micro-channel medium passing through the first monitoring sub-channel to obtain a flow reference time of the micro-channel medium passing through the second monitoring sub-channel, carrying out matching on risk influence coefficients corresponding to the predefined different current number intervals in the first monitoring sub-channel to obtain risk influence coefficients of the micro-channel medium in the second monitoring sub-channel, extracting from a micro-channel medium database to obtain a generated current reference value, carrying out average value and carrying out analysis on the flow time of the micro-channel medium in the second monitoring sub-channel in the second passing through period to obtain a maximum risk coefficient of the micro-channel in the second monitoring sub-channel according to the average value of the second passing through time corresponding to the micro-channel in the first monitoring sub-channel.
According to the method, whether the risk management and control plan is regulated or not is judged according to the obtained and compared medium stability evaluation result, and the specific judgment process is that the stability evaluation index of the micro-channel medium in the second monitoring sub-channel and the stability evaluation index of the micro-channel medium through the first monitoring sub-channel are subjected to difference processing to obtain a micro-channel medium stability evaluation index difference value, the micro-channel medium stability evaluation index difference value is compared with a predefined medium stability evaluation difference value permission interval, if the micro-channel medium stability evaluation index difference value belongs to the medium stability evaluation difference value permission interval, the risk management and control plan is not required to be regulated, and if the micro-channel medium stability evaluation index difference value does not belong to the medium stability evaluation difference value permission interval, the risk management and control plan is required to be regulated.
Compared with the prior art, the embodiment of the invention has at least the following advantages or beneficial effects:
(1) According to the invention, by providing a real-time risk management and control system for the microchannel medium based on multivariable measurement, initial state data of the microchannel inlet medium is firstly obtained, initial stability is evaluated, the time length of a first monitoring subchannel is estimated, the actual time length and the estimated time length are compared, the risk management and control plan of a second monitoring subchannel is matched after verification, the actual passing data of the first monitoring subchannel is analyzed, a real-time risk assessment index is obtained, the first stability index is matched, the system can timely find potential safety hazards, the plan is executed to process possible risks, the state data of the second monitoring subchannel is obtained, the stability assessment index is judged and compared with the first stability index, whether the risk management and control plan is regulated or not is judged according to the comparison result, dynamic adjustment is carried out according to the real-time state of the medium, the highest safety level can be ensured under various conditions, the process realizes effective management and control of the real-time risk of the microchannel medium and dynamic adjustment of the plan, and the real-time management and control efficiency of the microchannel medium and the use stability of the microchannel are improved.
(2) According to the invention, the initial stability evaluation index of the micro-channel medium is judged by acquiring the real-time initial state data of the medium at the micro-channel inlet, so that whether the flow state of the medium in the micro-channel is stable or not can be judged, an important basis is provided for subsequent monitoring and control, the estimated time length of the micro-channel medium passing through the first monitoring sub-channel is obtained by matching, the control system can be helped to better plan the control plan, and the control efficiency is improved.
(3) According to the invention, through comparison of the stability evaluation index of the micro-channel medium in the second monitoring sub-channel and the stability evaluation index of the micro-channel medium in the first monitoring sub-channel, the state change of the medium in the flowing process can be found in time, whether the risk management and control scheme is regulated or not is judged according to the change of the micro-channel medium, the continuity and stability of the medium management and control are maintained, and the flexibility of the risk management and control scheme is improved.
Drawings
The invention will be further described with reference to the accompanying drawings, in which embodiments do not constitute any limitation of the invention, and other drawings can be obtained by one of ordinary skill in the art without inventive effort from the following drawings.
Fig. 1 is a schematic diagram of a system module connection according to the present invention.
Fig. 2 is a current change polyline.
Reference numeral 1, current reference value straight line.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, and all other embodiments obtained by those skilled in the art without making any inventive effort based on the embodiments of the present invention are within the scope of protection of the present invention.
Referring to fig. 1, the embodiment of the invention provides a technical scheme that a microchannel medium real-time risk management and control system based on multivariate measurement comprises an initial state judging module, a risk management and control plan matching module, a first monitoring subchannel analyzing module, a second monitoring subchannel judging module and a risk management and control plan regulating module.
The embodiment of the invention provides a technical scheme that the real-time risk management and control system for a micro-channel medium based on multivariate measurement further comprises a micro-channel medium database, wherein the micro-channel medium database is used for storing preset values of medium reference flow speed, medium reference temperature, medium reference concentration, medium reference pH value, bearing pressure adaptation value, current reference value, various factors and the like.
The initial state judging module is connected with the risk management and control plan matching module and the first monitoring sub-channel analyzing module, the risk management and control plan matching module and the first monitoring sub-channel analyzing module are connected with the second monitoring sub-channel judging module, the second monitoring sub-channel judging module is connected with the risk management and control plan regulating and controlling module, and the initial state judging module, the first monitoring sub-channel analyzing module and the second monitoring sub-channel judging module are connected with the micro-channel medium database.
The initial state judging module is used for acquiring real-time initial state data of the medium at the inlet of the micro-channel, judging initial stability evaluation indexes of the micro-channel medium, and obtaining the estimated time length of the micro-channel medium passing through the first monitoring sub-channel through matching.
It should be noted that, the equivalent diameter of the micro-channels, also called micro-channel reactors, is usually in the range of 10 μm to 1000 μm, and tens of fine flow channels are arranged in the flat tubes of such reactors, and the two ends of the flat tubes are connected with round headers, and the headers are provided with partitions to divide the flow channels into several flows, and the micro-channels have a hydraulic diameter of below 0.61mm because the external dimensions may be larger, for example, up to 1.2m×4m×25.4mm, and are also called as large-scale micro-channel reactors.
A microchannel medium generally refers to a substance filled or flowing in a microchannel, in a microchannel reactor, in which a liquid such as water, a refrigerant, or the like flows as a heat transfer medium in a microchannel to transfer heat, and in which the liquid may also act as a reactant or solvent.
Specifically, the initial stability evaluation index of the microchannel medium is determined, and the specific determination process is as follows:
The real-time initial state data of the medium at the inlet of the micro-channel specifically comprises initial flow rate, initial temperature, initial concentration and initial pH value of the medium at the inlet time point.
The inlet time point refers to an instant time point when the micro-channel medium passes through the micro-channel inlet, and the initial flow rate, the initial temperature, the initial concentration and the initial pH value of the medium are all instant flow rate, instant temperature, instant concentration and instant pH value.
The initial flow rate of the medium can be obtained by monitoring through an instantaneous speed sensor, the initial temperature of the medium can be obtained by monitoring through a temperature sensor, the initial concentration of the medium can be obtained by monitoring through optical fiber sensing equipment, and the initial acid-base value of the medium can be obtained by monitoring through an acid-base detector.
And extracting the medium reference flow rate, the medium reference temperature, the medium reference concentration and the medium reference pH value from the micro-channel medium database.
According to the initial flow velocity of the medium of the micro-channel medium at the inlet time point, the initial temperature of the medium of the micro-channel medium at the inlet time point, the initial concentration of the medium of the micro-channel medium at the inlet time point and the initial pH value of the medium of the micro-channel medium at the inlet time point, the initial stability evaluation index of the micro-channel medium is obtained by comprehensive analysis, and the specific method is as follows:
;
In the formula, In this embodiment, the stability and reliability of the micro-channel medium are measured when the micro-channel medium initially enters the micro-channel, and when the stability and reliability of the micro-channel medium are higher, the higher the stability and reliability of the micro-channel medium initially enters the micro-channel, the lower the risk of the micro-channel medium in the subsequent flow process.
The initial flow rate of the medium at the inlet time point for the microchannel medium means the self flow rate at the inlet of the microchannel when the medium starts to flow into the microchannel.
The reference flow rate of the medium refers to a preset adaptation value of the flow rate of the medium.
The initial temperature of the medium at the inlet time point for the microchannel medium refers to the temperature of the medium itself at the inlet of the microchannel when the medium starts to flow into the microchannel.
The reference medium temperature refers to an adaptive value of a preset initial medium temperature.
The initial concentration of the medium at the inlet time point for the microchannel medium means the self concentration at the inlet of the microchannel when the medium starts to flow into the microchannel.
The reference concentration of the medium refers to an adaptive value of a preset initial concentration of the medium.
The initial pH of the medium at the point in time of entry for the microchannel medium is the pH of the medium itself at the point in time of entry to the microchannel when the medium begins to flow into the microchannel.
The initial reference pH value of the medium refers to the preset adaptation value of the initial pH value of the medium, and e is a natural constant.
In this embodiment, the initial temperature of the micro-channel medium affects the flow performance of the medium, for example, when the initial temperature of the micro-channel medium is higher and is far higher than the reference temperature, the viscosity and density of the medium are both increased, so that the initial flow rate of the medium is reduced, the initial stability index of the micro-channel medium is reduced because the flow rate is too high or too low, and meanwhile, when the initial temperature of the micro-channel medium is higher and is far higher than the reference temperature, the speed of certain chemical reactions in the medium is accelerated, so that the concentration distribution of the medium is changed, or when the initial temperature is higher or lower, the concentration of the medium is deviated from the reference value, the initial temperature directly affects the temperature distribution in the micro-channel, the temperature fluctuation is too high, the reaction speed and the selectivity are possibly changed, so that the stability of the system is affected, besides, the pH value stability of the medium is directly affected because the pH value is excessively high, the chemical reaction speed and the direction of the medium are possibly changed, so that the stability of the system is affected.
Further, the matching obtains the estimated time length of the micro-channel medium passing through the first monitoring sub-channel, and the specific matching process is as follows:
the method comprises the steps of obtaining a mapping set of initial stability evaluation indexes of a micro-channel medium and estimated time lengths of the micro-channel medium passing through a first monitoring sub-channel from a micro-channel medium database, determining a specific interval of the initial stability evaluation indexes of the micro-channel medium, obtaining the estimated time lengths of the micro-channel medium passing through the first monitoring sub-channel corresponding to the interval, and obtaining the estimated time lengths of the micro-channel medium passing through the first monitoring sub-channel through matching.
It should be noted that, when the initial flow rate of the micro-channel medium at the inlet time point, the initial temperature of the micro-channel medium at the inlet time point, the initial concentration of the micro-channel medium at the inlet time point, and the initial ph of the micro-channel medium at the inlet time point approach or are equal to the corresponding reference values, the initial stability evaluation index of the micro-channel medium is at the maximum value, and the initial stability of the micro-channel medium is at the optimal state, and the estimated time period of the micro-channel medium passing through the first monitoring sub-channel should be at the minimum value.
The risk management and control plan matching module is used for obtaining the actual time length of the micro-channel medium passing through the first monitoring sub-channel, checking the actual time length of the micro-channel medium passing through the first monitoring sub-channel and the estimated time length of the micro-channel medium passing through the first monitoring sub-channel, and obtaining and matching the risk management and control plan of the micro-channel medium passing through the second monitoring sub-channel according to the checking result.
The actual time length can be obtained through monitoring by a timer.
Specifically, the obtained and according to the verification result, the risk management and control plan of the microchannel medium passing through the second monitoring sub-channel is matched, and the specific analysis process is as follows:
the verification result is specifically a first verification result or a second verification result.
And the first verification result is that the actual time length of the micro-channel medium passing through the first monitoring sub-channel is equal to the estimated time length of the micro-channel medium passing through the first monitoring sub-channel.
And the second checking result is that the actual time length of the micro-channel medium passing through the first monitoring sub-channel is not equal to the estimated time length of the micro-channel medium passing through the first monitoring sub-channel.
When the verification result shows that the first verification result is obtained, an initial risk management and control plan with the estimated time length matched is directly extracted from the micro-channel medium database, and the specific matching process is that a mapping set of the estimated time length and the initial risk management and control plan is obtained from the micro-channel medium database, the estimated time length is matched with the pre-defined initial risk management and control plan corresponding to each estimated time length interval, the affiliated interval of the estimated time length is firstly determined, the initial risk management and control plan corresponding to the interval is distributed to the estimated time length, so that the initial risk management and control plan with the estimated time length matched is obtained, and the initial risk management and control plan is recorded as the risk management and control plan of the micro-channel medium through the second monitoring sub-channel.
The initial risk management and control scheme with the matched estimated duration can specifically be to monitor the medium flow rate of the micro-channel medium passing through the second monitoring sub-channel and manage and control the circulation duration of the micro-channel medium passing through the second monitoring sub-channel.
When the verification result shows that the actual duration matches the initial risk management and control plan is displayed as the second verification result, the initial risk management and control plan with the actual duration matching is extracted from the micro-channel medium database, and the specific matching process is that a mapping set of the actual duration and the initial risk management and control plan is obtained from the micro-channel medium database, the actual duration matches the initial risk management and control plan corresponding to each predefined actual duration interval, the affiliated interval of the actual duration is firstly determined, the initial risk management and control plan corresponding to the interval is distributed to the actual duration, so that the initial risk management and control plan with the actual duration matching is obtained, and the initial risk management and control plan is recorded as the risk management and control plan of the micro-channel medium passing through the second monitoring sub-channel.
The initial risk management and control scheme with the matched actual duration may specifically be monitoring a medium flow speed, a medium concentration and a generated current of the micro-channel medium passing through the second monitoring sub-channel, and managing and controlling a pressure in the second monitoring sub-channel and a circulation duration of the micro-channel medium passing through the second monitoring sub-channel when the micro-channel medium passes through the second monitoring sub-channel.
In the embodiment of the invention, the initial stability evaluation index of the micro-channel medium is judged to ensure that the micro-channel medium is in a stable state when entering the first monitoring sub-channel, so that the actual time length of the micro-channel medium passing through the first monitoring sub-channel is utilized to predict the stable state of the micro-channel medium when passing through the second monitoring sub-channel by the verification result of the estimated time length of the micro-channel medium passing through the first monitoring sub-channel, and the risk management and control scheme of the micro-channel medium passing through the second monitoring sub-channel is matched to ensure that the micro-channel medium is in the stable state when passing through the second monitoring sub-channel, thereby monitoring the circulation process of the subsequent micro-channel medium and reducing the risk condition of the medium in the circulation process of the micro-channel.
In this embodiment, an initial risk management and control plan is matched according to the estimated time length or the actual time length, specifically, a preset relation corresponding to the estimated time length or the actual time length one by one is preset according to the historical risk management and control data of the micro-channel medium in the micro-channel medium database.
The first monitoring sub-channel analysis module is used for acquiring actual passing data of the micro-channel medium passing through the first monitoring sub-channel, analyzing real-time risk assessment indexes of the micro-channel medium passing through the first monitoring sub-channel, and matching to obtain stable assessment indexes of the micro-channel medium passing through the first monitoring sub-channel.
Further, the actual passing data of the micro-channel medium through the first monitoring sub-channel specifically comprises a medium flow rate of the micro-channel medium at each first passing time point, a medium flow rate of the micro-channel medium in the first passing period, a maximum pressure value born by the first monitoring sub-channel in the first passing period and a current value generated by the micro-channel medium at each first passing time point.
The first passing time point is specifically a plurality of first passing time points in which the time points of the first passing period are divided equally, and the corresponding dividing rule may be 30 seconds, where the first passing period refers to a period of time when the micro-channel medium passes through the first monitoring sub-channel, and the determination of the first passing period is a period of time from when the micro-channel medium starts to pass through the first monitoring sub-channel to when the micro-channel medium leaves the first monitoring sub-channel.
The medium flow rate can be obtained by monitoring through an instantaneous speed sensor, the medium flow can be obtained by monitoring through a flow sensor, the pressure can be obtained by monitoring through a pressure sensor, and the current value can be obtained by monitoring through a current sensor.
Specifically, the real-time risk assessment index of the micro-channel medium passing through the first monitoring sub-channel is obtained by matching, and the specific analysis process is as follows:
and arranging the medium flow rates of the micro-channel medium at each first passing time point in sequence from large to small, and recording the medium flow rate ranked first as the medium maximum flow rate of the micro-channel medium in the first passing period.
According to the initial flow velocity of the medium of the micro-channel medium at the inlet time point, the medium reference flow velocity corresponding to each predefined medium initial flow velocity interval in the micro-channel medium database is matched, wherein the specific matching process comprises the steps of obtaining a mapping set of the initial flow velocity of the medium and the medium reference flow velocity from the micro-channel medium database, firstly determining a specific interval of the initial flow velocity of the medium of the micro-channel medium at the inlet time point, obtaining the medium reference flow velocity corresponding to the interval, and obtaining the medium reference flow velocity of the micro-channel medium in the first passing period through the matching.
According to the initial stability evaluation index of the micro-channel medium, the bearing pressure adaptation values corresponding to the predefined initial stability evaluation index intervals are matched, wherein the specific matching process comprises the steps of obtaining a mapping set between the initial stability evaluation index of the micro-channel medium and the bearing pressure adaptation values from a micro-channel medium database, and determining the specific interval of the initial stability evaluation index of the micro-channel medium, so that the bearing pressure adaptation values of the micro-channel medium in a first passing period are obtained.
According to the current value generated by the micro-channel medium at each first passing time point, constructing a current change fold line of the micro-channel medium in a first passing period, extracting a plurality of first passing time points corresponding to the current value larger than a predefined current reference value from the current change fold line, and recording the first passing time points as the abnormal current number of the micro-channel medium in a first monitoring sub-channel.
According to the current value generated by the micro-channel medium at each first passing time point, a current change broken line of the micro-channel medium in the first passing period is constructed, and as shown in fig. 2, the abscissa of the current change broken line is the first passing time point, the unit is seconds, the ordinate is the current value, and the unit is amperes.
According to the current change broken line, a current reference value straight line 1 is positioned, so that a plurality of first passing time points corresponding to the current value larger than the current reference value are counted, and the number of abnormal currents of the micro-channel medium in the first monitoring sub-channel is recorded.
And extracting from the micro-channel medium database to obtain the adapting value of the bearing pressure.
According to the maximum flow rate of the micro-channel medium in the first passing period, the medium flow rate of the micro-channel medium in the first passing period, the maximum pressure value born by the first monitoring sub-channel in the first passing period and the abnormal current number of the micro-channel medium in the first monitoring sub-channel, comprehensively analyzing to obtain a real-time risk assessment index of the micro-channel medium passing through the first monitoring sub-channel, wherein the real-time risk assessment index comprises the following steps of:
;
In the formula, In this embodiment, the real-time risk assessment index of the micro-channel medium passing through the first monitoring sub-channel is used to measure the possible risk degree of the medium when the micro-channel medium passes through the first monitoring sub-channel, when the real-time risk assessment index of the micro-channel medium passing through the first monitoring sub-channel is higher, the worse the stability of the medium passing through the first monitoring sub-channel is, the higher the risk possibility of the micro-channel medium in the circulation process of the subsequent second monitoring sub-channel is.
The maximum flow rate of the micro-channel medium in the first passing period is denoted as max, and the maximum flow rate refers to the self flow rate of the micro-channel medium when the medium flows into the first monitoring sub-channel in the first passing period.
The flow rate is referenced to the medium.
For the medium flow of the micro-channel medium in the first pass period, which means the medium volume of the micro-channel medium flowing through the first monitoring sub-channel in the first pass period, the total amount of medium flow is described, and the unit of flow is cubic micrometers per second.
The reference flow rate of the medium is an adaptation value of the medium flow rate set in advance.
The maximum pressure value born by the first monitoring sub-channel in the first passing period means that the first monitoring sub-channel needs to bear the maximum pressure generated by medium circulation when the micro-channel medium flows through the first monitoring sub-channel.
The pressure adapting value refers to a preset reference value of the micro channel capable of bearing pressure.
The number of abnormal currents in the first monitoring sub-channel is the number of abnormal current signals generated by the micro-channel medium when the micro-channel medium passes through the first monitoring sub-channel.
In this embodiment, the increase of the number of abnormal currents may mean that the flowing state of the micro-channel medium in the first monitoring sub-channel has unstable factors, which may interfere with the accuracy of stable evaluation, so that the evaluation result is difficult to truly reflect the actual flowing state of the micro-channel medium, and the increase of the number of abnormal currents may also mean that the micro-channel medium has potential failure risks in the first monitoring sub-channel, where the failures may include medium leakage, channel blockage, equipment damage, and the like, and affect the normal operation of the micro-channel.
And (5) evaluating an influence factor for real-time risk corresponding to the number of the predefined abnormal currents in the micro-channel medium database.
The real-time risk assessment influence factors corresponding to the abnormal current numbers are directly extracted from a micro-channel medium database, the real-time risk assessment influence factors are expressed as values of influence degrees of micro-channel media on real-time risk assessment indexes of the micro-channel media through a first monitoring sub-channel in the stable assessment process of the micro-channel media through the first monitoring sub-channel, a specific mapping relation exists between the abnormal current numbers and the real-time risk assessment influence factors in the micro-channel medium database, the mapping relation can be in a one-to-one or many-to-one mode, the real-time risk assessment influence factors corresponding to the real-time risk assessment influence factors can be obtained by substituting the real-time detected abnormal current numbers into the mapping set, the abnormal current numbers are used as input in the process, the real-time risk assessment influence factors are used as output, the relation between the micro-channel media and the micro-channel media is established through the mapping set, and the real-time risk assessment influence factors corresponding to the abnormal current numbers in the embodiment have a value range of (0, 1).
In the micro-channel, a direct proportional relation exists between the flow rate of the medium and the flow rate of the medium, specifically, when the cross-sectional area of the micro-channel is constant, the flow rate of the medium is larger, but when the flow rate of the medium and the flow rate of the medium are too large and deviate from the preset flow rate and flow reference value of the micro-channel, the medium can generate strong turbulence in the micro-channel, the flowing state of the medium in the micro-channel is influenced, so that the risk of medium circulation is increased, when the flow rate of the medium and the flow rate of the medium are too small and deviate from the preset flow rate and flow reference value of the micro-channel, the flowing state of the medium in the micro-channel is slow, the stay time of the medium in the micro-channel is increased, the stability of the medium in the micro-channel is also influenced, the risk is increased, and when the flow rate of the medium is increased, the flow rate is further increased, the pressure born by the micro-channel is further caused, the larger, the pressure born by the micro-channel is limited, the leakage can be caused by the too large pressure, and the pressure born by the micro-channel can be reduced, and the medium can flow in a certain range is kept, and the medium can flow stably.
The method comprises the steps of obtaining a mapping set between real-time risk evaluation indexes of the microchannel medium passing through a first monitoring sub-channel and stability evaluation indexes from a microchannel medium database, determining a specific interval of the real-time risk evaluation indexes of the microchannel medium passing through the first monitoring sub-channel, and distributing the stability evaluation indexes corresponding to the interval to the microchannel medium corresponding to the real-time risk evaluation indexes passing through the first monitoring sub-channel, so as to obtain the stability evaluation indexes of the microchannel medium passing through the first monitoring sub-channel.
The second monitoring sub-channel judging module is used for executing a risk management and control plan of the micro-channel medium passing through the second monitoring sub-channel, so that state data of the micro-channel medium passing through the second monitoring sub-channel is obtained, and a stability evaluation index of the micro-channel medium in the second monitoring sub-channel is judged.
Further, the state data of the micro-channel medium passing through the second monitoring sub-channel specifically includes a maximum pressure value born by the second monitoring sub-channel in the second passing period, a medium temperature of the micro-channel medium at each second passing time point, a starting time point of the micro-channel medium passing through the second monitoring sub-channel, an ending time point of the micro-channel medium passing through the second monitoring sub-channel, and a current average value generated by the micro-channel medium in the second passing period.
The second passing time point is specifically a plurality of second passing time points in which the second passing period is divided by time point average, and the corresponding dividing rule may be 30 seconds, where the second passing period refers to a period of time when the micro-channel medium passes through the second monitoring sub-channel, and the determination of the second passing period is a period of time from when the micro-channel medium starts to pass through the second monitoring sub-channel until all the micro-channel medium leaves the second monitoring sub-channel, and the duration of time from the beginning time point of the micro-channel medium passing through the second monitoring sub-channel to the ending time point of the micro-channel medium passing through the second monitoring sub-channel is expressed as a flow time when the micro-channel medium passes through the second monitoring sub-channel.
The pressure value can be obtained by monitoring through a pressure sensor, the medium temperature can be obtained by monitoring through a temperature sensor, the starting time point and the ending time point can be obtained by monitoring through a timer, and the current value can be obtained by monitoring through a current sensor.
Specifically, the stability evaluation index of the micro-channel medium in the second monitoring sub-channel is determined, and the specific determination process is as follows:
And carrying out standard deviation processing on the medium temperature of the micro-channel medium at each second passing time point to obtain the medium temperature stability coefficient of the micro-channel medium in the second passing period.
And carrying out difference processing on the ending time point of the micro-channel medium passing through the second monitoring sub-channel and the starting time point of the micro-channel medium passing through the second monitoring sub-channel to obtain the circulation duration of the micro-channel medium passing through the second monitoring sub-channel.
According to the stability evaluation index of the micro-channel medium passing through the first monitoring sub-channel, the circulation reference time length corresponding to the stability evaluation index interval of each first monitoring sub-channel predefined in the micro-channel medium database is matched, and the specific matching process comprises the steps of obtaining a mapping set of the stability evaluation index of the micro-channel medium passing through the first monitoring sub-channel and the circulation reference time length from the micro-channel medium database, determining the specific interval of the stability evaluation index of the micro-channel medium passing through the first monitoring sub-channel, and obtaining the circulation reference time length corresponding to the interval, thereby obtaining the circulation reference time length of the micro-channel medium passing through the second monitoring sub-channel.
The method comprises the steps of obtaining a mapping set of abnormal current numbers and risk influence coefficients of a micro-channel medium in a first monitoring sub-channel from a micro-channel medium database, determining a specific interval of the abnormal current numbers of the micro-channel medium in the first monitoring sub-channel, and obtaining the risk influence coefficient corresponding to the interval, so as to obtain the risk influence coefficient of the micro-channel medium in a second monitoring sub-channel.
And extracting the generated current reference value from the micro-channel medium database.
According to the maximum pressure value born by the second monitoring sub-channel in the second passing period, the medium temperature stability coefficient of the micro-channel medium in the second passing period, the circulation time of the micro-channel medium passing through the second monitoring sub-channel, the risk influence coefficient of the micro-channel medium in the second monitoring sub-channel and the current average value generated by the micro-channel medium in the second passing period, the stability evaluation index of the micro-channel medium in the second monitoring sub-channel is obtained by comprehensive analysis, and the specific method is as follows:
;
In the formula, In this embodiment, the stability and reliability of the micro-channel medium are measured when the micro-channel medium passes through the second monitoring sub-channel, and when the stability and reliability of the micro-channel medium passing through the second monitoring sub-channel are higher, the higher the stability and reliability of the micro-channel medium passing through the second monitoring sub-channel are, the lower the risk of the micro-channel medium in the process of flowing in the subsequent monitoring sub-channel is.
The maximum pressure value born by the second monitoring sub-channel in the second passing period means that the second monitoring sub-channel needs to bear the maximum pressure generated by medium circulation when the micro-channel medium passes through the second monitoring sub-channel.
To withstand the pressure adaptation values.
The medium temperature stability coefficient of the micro-channel medium in the second pass period refers to the fluctuation degree of the medium temperature when the micro-channel medium flows through the second monitoring sub-channel in the second pass period.
The risk influence coefficient of the micro-channel medium in the second monitoring sub-channel refers to a quantitative index of risk influence possibly generated by a system or a process when the micro-channel medium flows in the second monitoring sub-channel.
The flow duration of the micro-channel medium passing through the second monitoring sub-channel refers to a duration from when the micro-channel medium starts to pass through the second monitoring sub-channel to when the micro-channel medium leaves the second monitoring sub-channel.
The circulation reference time length refers to a preset adaptive time length of medium circulation.
The average value of the current generated by the micro-channel medium in the second pass period refers to the average value of the electric signal generated by the micro-channel medium in the micro-channel in the second pass period due to the medium flow, chemical reaction, electrochemical reaction or physical process, such as thermoelectric effect, piezoelectric effect and the like.
The reference value for generating the current refers to an adaptive value corresponding to a preset medium generated current.
Represented as a stability assessment impact factor corresponding to a predefined medium temperature stability factor in a microchannel medium database,And e is a natural constant, and is expressed as a stable evaluation influence factor corresponding to a predefined risk influence coefficient in the micro-channel medium database.
The stability evaluation influence factor corresponding to the medium temperature stability factor and the stability evaluation influence factor corresponding to the risk influence factor are directly extracted from the micro-channel medium database, and are expressed as values of influence degrees of stability evaluation indexes of the micro-channel medium passing through the second monitoring sub-channel in the process of stability evaluation of the micro-channel medium passing through the second monitoring sub-channel, in the micro-channel medium database, for example, a specific mapping relation exists between the medium temperature stability factor and the stability evaluation influence factor, the mapping relation can be in a one-to-one or many-to-one form, the medium temperature stability factor detected in real time is substituted into the mapping set, the stability evaluation influence factor corresponding to the medium temperature stability factor can be obtained, the stability evaluation influence factor is taken as an input in the process, the relationship between the stability evaluation influence factor and the stability evaluation influence factor is established through the mapping set, and the value range of the stability evaluation influence factor corresponding to the medium temperature stability evaluation influence factor and the risk influence factor is (0, 1).
In this embodiment, when the temperature stability coefficient of the medium is larger, this means that the temperature change of the medium is larger in the process of flowing, so that the flowing state of the medium is unstable, and the micro-channel needs to bear larger pressure to buffer the negative effects caused by the temperature change, if the pressure value to be borne by the micro-channel is far higher than the preset pressure reference value of the micro-channel, the possibility that the micro-channel is damaged by leakage of the medium, performance degradation of the channel, and the like is greatly increased, so as to reduce the stability of the micro-channel medium passing through the second monitoring sub-channel, and the flowing duration of the medium in the channel may affect the temperature stability of the micro-channel, for example, the flowing duration of the medium in the channel may cause the temperature of the medium to gradually increase or decrease, so as to affect the temperature stability coefficient, and the flowing duration of the medium in the channel may also affect the interactions of the medium and the channel wall surface, such as chemical reaction, adsorption, desorption, and the like, which may affect the ion concentration, charge distribution, and the like in the medium, thereby changing the current value generated by the medium, and causing the medium to deviate from the preset reference value, so as to greatly reduce the stability of the micro-channel medium.
In the embodiment, the magnitude of the risk influence coefficient directly reflects the unstable factor of the micro-channel medium in the second monitoring sub-channel, the higher the coefficient is, the larger the potential risk is, which means that the sensitivity of the stability evaluation index to micro-disturbance may be increased, so that the stability of the micro-channel medium in the second monitoring sub-channel is reduced, meanwhile, in the environment with higher risk, the stability evaluation index may be more easily interfered or misled due to the more potential unstable factors, so that the reliability of the stability evaluation index is reduced, and in sum, the risk influence coefficient of the larger micro-channel medium in the second monitoring sub-channel has a significant negative influence on the stability evaluation index of the micro-channel medium in the second monitoring sub-channel.
The risk management and control plan regulating and controlling module is used for comparing the stability evaluation index of the micro-channel medium in the second monitoring sub-channel with the stability evaluation index of the micro-channel medium through the first monitoring sub-channel to obtain and judge whether to regulate and control the risk management and control plan according to the medium stability evaluation comparison result.
Further, the step of obtaining and judging whether to regulate the risk management and control plan according to the medium stability evaluation comparison result comprises the following specific judging process:
And carrying out difference processing on the stability evaluation index of the micro-channel medium in the second monitoring sub-channel and the stability evaluation index of the micro-channel medium through the first monitoring sub-channel to obtain a micro-channel medium stability evaluation index difference value, comparing the micro-channel medium stability evaluation index difference value with a medium stability evaluation difference value permission interval predefined in a micro-channel medium database, if the micro-channel medium stability evaluation index difference value belongs to the medium stability evaluation difference value permission interval, not regulating and controlling the risk management and control plan, and if the micro-channel medium stability evaluation index difference value does not belong to the medium stability evaluation difference value permission interval, regulating and controlling the risk management and control plan.
It should be noted that, when the difference value of the stability evaluation index of the micro-channel medium belongs to the permission interval of the stability evaluation index of the medium, the difference value is regarded as a permission state no matter whether the difference value is a positive value or a negative value, and the setting is derived from the core objective of the embodiment of the present invention, namely, ensuring that the micro-channel medium maintains a stable state when circulating in the channel, so as to effectively reduce the potential risk in the medium circulating process, specifically, that a certain fluctuation exists between the stability evaluation index of the micro-channel medium in the second monitoring sub-channel and the stability evaluation index when passing through the first monitoring sub-channel, which is a reasonable and acceptable phenomenon.
Specifically, the step of controlling the risk management and control plan may specifically be performed when the difference value of the micro-channel medium stability evaluation index is greater than the maximum value of the medium stability evaluation difference value allowable interval or the difference value of the micro-channel medium stability evaluation index is less than the minimum value of the medium stability evaluation difference value allowable interval.
If the difference value of the stability evaluation indexes of the micro-channel medium is larger than the maximum value of the permission interval of the stability evaluation difference value of the medium, the stability evaluation indexes of the micro-channel medium in the second monitoring sub-channel are larger than the stability evaluation indexes of the micro-channel medium passing through the first monitoring sub-channel, and abnormal fluctuation of pressure, medium flow speed or medium temperature and the like of the micro-channel can be caused, so that the normal operation of the whole micro-channel medium circulation is influenced.
If the stability evaluation index difference of the micro-channel medium is lower than the minimum value of the medium stability evaluation difference allowable interval, the method indicates that after the risk management and control scheme is implemented on the micro-channel medium through the second monitoring sub-channel, not only the expected good effect cannot be achieved, but also the stability of the micro-channel medium is possibly adversely affected, so that the stability evaluation index of the medium in the second monitoring sub-channel is lower.
When the difference value of the stability evaluation index of the micro-channel medium is larger than the maximum value of the permission interval of the stability evaluation index of the medium, the risk management and control scheme is regulated, specifically, the power of the medium conveying pump is regulated to reduce the flow velocity of the medium, so that the circulation duration of the medium is reduced, and finally, the stability evaluation index of the micro-channel medium in the second monitoring sub-channel is reduced.
When the difference value of the stability evaluation index of the micro-channel medium is smaller than the minimum value of the permission interval of the stability evaluation index of the medium, the regulation and control of the risk management and control plan can be specifically realized by arranging a pressure regulating device such as a throttle valve, a pressure sensor and the like in the micro-channel, so that the pressure distribution in the channel can be monitored and regulated in real time, and the accurate control of the pressure distribution born in the micro-channel can be realized by regulating the working states of the devices, so that the pressure born by the micro-channel is always kept in the range of the received reference pressure, and the stability evaluation index of the micro-channel medium in the second monitoring sub-channel is increased.
The foregoing is merely illustrative of the structures of this invention and various modifications, additions and substitutions for those skilled in the art of describing particular embodiments without departing from the structures of the invention or exceeding the scope of the invention as defined by the claims.
Claims (10)
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