Pressure release two-way rapid cutting-off method and device for gas supply system of pressure swing adsorption device

Abstract

The invention discloses a two-way quick pressure relief cutting-off method and device for a gas supply system of a pressure swing adsorption device, and relates to the technical field of gas supply and pressure relief control. The two-way rapid cutting-off method and device for pressure relief of the gas supply system of the pressure swing adsorption device comprise the following steps: S1, acquiring gas supply pressure relief data, and preprocessing the gas supply pressure relief data; s2, a sliding monitoring window is established, the expansion risk is evaluated based on the preprocessed gas supply pressure relief data, whether a pressure relief control instruction is triggered or not is judged based on an evaluation result, and an expansion risk data set is output; s3, the expansion risk data set is read, whether pressure relief is executed or not is judged according to the expansion risk assessment value, the trigger mark and the pressure relief direction, and micro pressure relief action response is controlled; and S4, evaluating the pressure relief abnormal degree based on the deviation of multiple variables in the pressure relief execution process, identifying the abnormal type, and triggering a corresponding safety response strategy in a linkage manner to realize closed-loop control. The problem that after the valve is cut off, residual gas in a dead cavity is prone to expansion overpressure, and therefore secondary explosion is caused is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of gas supply pressure relief control, and in particular to a method and device for quickly shutting off the pressure relief of a gas supply system of a pressure swing adsorption device. Background Art

[0002] Pressure swing adsorption (PSA), a core component in gas separation and purification, is widely used in industrial nitrogen and oxygen production, natural gas processing, and other fields. The safety and response efficiency of its gas supply system have a critical impact on the operational stability of the equipment. In actual operation, gas supply pipelines may experience sudden changes in pressure differentials due to leaks, blockages, or abnormal switching. If the system is slow to respond or misidentifies the direction of the cutoff, it can easily lead to abnormal gas diffusion.

[0003] Traditional pressure relief and shut-off devices are mostly based on one-way valves, which are unable to sense the direction of pressure differentials and achieve adaptive responses. Their actuation relies on electromagnetic drive and external signals, lacking intrinsic responsiveness in high-risk scenarios. Furthermore, after shut-off, the system often has dead space before and after the valve. If residual gas continues to accumulate under closed conditions, it can easily expand and overpressurize, creating a risk of localized explosion.

[0004] In addition, existing devices generally lack a real-time judgment mechanism for pressure change trends, making it difficult to capture abnormal signs before expansion, and do not have the ability to judge based on the dynamic evolution of pressure differences, which limits the system's response foresight and protection accuracy.

[0005] Therefore, in response to the above problems, a method and device for quickly shutting off the pressure relief of the gas supply system of a pressure swing adsorption device is urgently needed. Summary of the Invention

[0006] Technical problems solved

[0007] In response to the deficiencies in the prior art, the present invention provides a two-way rapid shut-off method and device for pressure relief in the gas supply system of a pressure swing adsorption device, which solves the problem that residual gas in the dead space after the valve is shut off is prone to expansion and overpressure, thereby causing a secondary explosion.

[0008] Technical Solution

[0009] To achieve the above objectives, the present invention is implemented through the following technical solutions: a two-way rapid shut-off method for pressure relief of the gas supply system of a pressure swing adsorption device, comprising the following steps: S1, real-time acquisition and control of system status feedback through multi-point sensors, obtaining gas supply pressure relief data, and preprocessing the gas supply pressure relief data; S2, establishing a sliding monitoring window, evaluating the expansion risk based on the preprocessed gas supply pressure relief data, determining whether to trigger the pressure relief control instruction based on the evaluation results, and outputting the expansion risk data set; S3, reading the expansion risk data set, comprehensively determining whether to execute pressure relief based on the expansion risk assessment value, trigger flag and pressure relief direction, and controlling the micro-pressure relief action response; S4, evaluating the degree of pressure relief abnormality based on the deviation of multiple variables in the pressure relief execution process, identifying the abnormality type and triggering the corresponding safety response strategy in linkage to achieve closed-loop control.

[0010] Furthermore, the specific steps of acquiring air supply pressure relief data and preprocessing the air supply pressure relief data by real-time acquisition and control system status feedback through multi-point sensors are as follows: acquiring air supply pressure relief data by real-time acquisition and control system status feedback through multi-point sensors, the air supply pressure relief data includes dead space pressure before valve, dead space pressure after valve, real-time pressure difference, temperature before valve, temperature after valve, valve cut-off state, dead space volume before valve, dead space volume after valve, valve action resistance and heat flux of dead space outer wall; locally smoothing the air supply pressure relief data by sliding window averaging algorithm; removing outliers from dynamic process variables in air supply pressure relief data by median filtering algorithm and stabilizing data distribution; processing energy input variables in air supply pressure relief data by time-weighted accumulation method; standardizing the air supply pressure relief data by range normalization algorithm, unifying numerical scale and completing normalization of air supply pressure relief data.

[0011] Furthermore, a sliding monitoring window is established, and the specific steps for evaluating the expansion risk based on the pre-processed air supply pressure relief data are as follows: construct a sliding monitoring window, read the pre-processed air supply pressure relief data at a fixed sampling interval, and push them into the sliding monitoring window in chronological order; within the monitoring window, calculate the dead space pressure values ​​in front of the valve at adjacent moments by a first-order difference algorithm to obtain the dead space pressure change rate in front of the valve; multiply the dead space pressure change rate in front of the valve by the dead space volume in front of the valve and then divide it by the square of the temperature in front of the valve as a pressure rise term; add one to the heat flux of the outer wall of the dead space, take the natural logarithm, and then divide it by the temperature in front of the valve as a heat flux growth term; square the valve action resistance and divide it by the dead space volume in front of the valve as a structural resistance term; add the pressure rise term, heat flux growth term, and structural resistance term in sequence to obtain an expansion risk assessment value.

[0012] Furthermore, the specific steps for determining whether to trigger the pressure relief control instruction based on the evaluation results and outputting the expansion risk data set are as follows: compare the expansion risk assessment value and the expansion risk threshold in real time; when the expansion risk assessment value is greater than or equal to the expansion risk threshold, assign a trigger flag to 1, and generate a control instruction to drive the micro pressure relief device to perform the pressure relief action; when the expansion risk assessment value is less than the expansion risk threshold, assign a trigger flag to 0, and the control instruction remains in an empty state, and continues to monitor the air supply pressure relief data; the air supply pressure relief data, the expansion risk assessment value, the expansion risk threshold and the trigger flag are combined into a data record and output as an expansion risk data set; at the same time, move the monitoring window to the next moment position and enter the next round of sampling and judgment process to achieve continuous dynamic update.

[0013] Furthermore, the specific steps of reading the expansion risk data set and comprehensively considering the expansion risk assessment value, the trigger flag and the pressure relief direction to determine whether to perform pressure relief are as follows: reading the expansion risk data set, when the trigger flag is 1 and the valve cut-off state is 1, entering the pressure relief control logic; when any condition is not met, skipping the pressure relief action of this cycle and returning to the monitoring process; comparing the dead space pressure in front of the valve with the dead space pressure behind the valve, if the dead space pressure in front of the valve is greater than the dead space pressure behind the valve, determining that the pressure relief direction is in the direction in front of the valve; if the dead space pressure behind the valve is greater than the dead space pressure in front of the valve, determining that the pressure relief direction is in the direction behind the valve; based on the expansion risk data set, calculating the pressure relief execution determination value.

[0014] Furthermore, based on the expansion risk data set, the specific steps for calculating the pressure relief execution judgment value are as follows: subtract the expansion risk threshold from the expansion risk assessment value to obtain the risk response item; divide the absolute value of the real-time pressure difference by the valve action resistance plus one to obtain the pressure difference adjustment item; calculate the exponential function value with the natural constant as the base and the negative of the product of the risk response item and the pressure relief adjustment coefficient as the exponent, add one to the exponential function value as the denominator, and use the valve cut-off state as the numerator, calculate the ratio of the numerator to the denominator, and obtain the state control item; multiply the risk response item, the pressure difference adjustment item, and the state control item in sequence to obtain the pressure relief execution judgment value.

[0015] Furthermore, the specific steps for controlling the response of the micro-pressure relief action are as follows: compare the pressure relief execution judgment value and the pressure relief execution threshold in real time. When the pressure relief execution judgment value is greater than or equal to the pressure relief execution threshold, send an open signal to the corresponding pressure relief channel; otherwise, keep the closed state and continue monitoring; continuously read the expansion risk assessment value and the real-time pressure difference during the pressure relief process. If both are lower than the expansion risk threshold and the minimum pressure difference threshold for three consecutive monitoring windows, it is determined that the pressure relief is completed and a pressure relief closing instruction is sent.

[0016] Furthermore, the specific steps for evaluating the degree of pressure relief abnormality based on the deviation of multiple variables in the pressure relief execution process are as follows: read the expansion risk assessment value, pressure relief execution judgment value, valve cut-off state, pressure relief execution threshold and air supply pressure relief data in the current monitoring window to form an abnormal state assessment variable set; quantify the abnormal degree of the pressure relief action based on the abnormal state assessment variable set: divide the square of the difference between the expansion risk assessment value and the expansion risk threshold by the square of the temperature in front of the valve to obtain the risk deviation term; calculate the square value of the difference between the pressure relief execution threshold and the pressure relief execution judgment value as the numerator, calculate the absolute value of the real-time pressure difference plus 1 as the denominator, and divide the numerator by the denominator to obtain the response lag term; divide the square of the valve action resistance by the dead space volume in front of the valve as the structural load term; invert the valve cut-off state as the action abnormality term; add the risk deviation term, response lag term, structural load term and action abnormality term in sequence to obtain the pressure relief abnormality assessment value.

[0017] Furthermore, the specific steps for identifying the abnormality type and triggering the corresponding safety response strategy in linkage to achieve closed-loop control are as follows: real-time comparison of the pressure relief abnormality assessment value and the pressure relief abnormality threshold. When the pressure relief abnormality assessment value is greater than the pressure relief abnormality threshold, the current pressure relief action is determined to be a high-level control abnormality, and the safety linkage processing process is entered: according to the trigger flag, pressure relief execution judgment value, expansion risk assessment value, real-time pressure difference, valve action resistance and valve cut-off status that constitute the pressure relief abnormality assessment value, their combination relationship is analyzed, and the abnormality type is classified into trigger failure, pressure relief invalid and valve stuck, and the current time and judgment result are recorded; the corresponding linkage strategy is executed according to the abnormality type: when the trigger fails to respond, the control logic is suspended and a risk alarm is issued; when the pressure relief is invalid, the backup pressure relief channel is switched; when the valve is stuck, a forced closing instruction is sent to the gas supply source; the abnormality type, pressure relief abnormality assessment value, response strategy and time are combined into a complete abnormality record, written into the abnormality log table, and synchronously backed up; after the linkage response is completed, the control process closes the current monitoring window, and automatically enters the next monitoring window as the gas supply pressure relief data continues to advance, forming a continuous closed-loop operation mechanism.

[0018] The second aspect of the present invention provides a two-way rapid shut-off device for pressure relief of the gas supply system of a pressure swing adsorption device, comprising: a gas supply pressure relief data acquisition and preprocessing module, an expansion risk assessment and pressure relief triggering module, a pressure relief control execution logic processing module and an abnormality recording and safety linkage response module, wherein: the gas supply pressure relief data acquisition and preprocessing module is used to collect and control system status feedback in real time through multi-point sensors, obtain gas supply pressure relief data, and preprocess the gas supply pressure relief data; the expansion risk assessment and pressure relief triggering module is used to establish a sliding monitoring window, assess the expansion risk based on the preprocessed gas supply pressure relief data, determine whether to trigger the pressure relief control instruction based on the assessment result, and output the expansion risk data set; the pressure relief control execution logic processing module is used to read the expansion risk data set, comprehensively determine whether to execute pressure relief based on the expansion risk assessment value, trigger flag and pressure relief direction, and control the micro pressure relief action response; the abnormality recording and safety linkage response module is used to assess the degree of pressure relief abnormality based on the deviation of multiple variables in the pressure relief execution process, identify the abnormality type and trigger the corresponding safety response strategy in a linkage manner to achieve closed-loop control.

[0019] Beneficial effects

[0020] The present invention has the following beneficial effects:

[0021] (1) The two-way rapid shut-off method and device for the pressure swing adsorption device gas supply system can accurately identify the thermal expansion trend of the gas in the dead space by integrating multiple gas supply pressure relief data such as the dead space pressure change rate before the valve, the dead space volume before the valve, the temperature before the valve and the heat flux of the outer wall of the dead space, so as to sense the expansion risk in advance before the pressure difference is abnormal, and effectively avoid the dead space rupture or secondary explosion caused by local overpressure.

[0022] (2) The method and device for quickly shutting off the pressure relief of the gas supply system of the pressure swing adsorption device can accurately determine the triggering conditions of the pressure relief control action by combining the expansion risk assessment value, real-time pressure difference, valve action resistance and valve cut-off status for dynamic analysis, thereby improving the response stability under actual working condition changes and avoiding pressure relief failure or frequent jitter caused by misjudgment or delayed judgment.

[0023] (3) The method and device for rapid pressure relief of the gas supply system of the pressure swing adsorption device forms a pressure relief abnormality assessment value by continuously comparing the expansion risk assessment value, the pressure relief execution judgment value, the pressure relief execution threshold, the real-time pressure difference, the valve action resistance and the valve cut-off state. It can systematically identify control abnormalities such as trigger failure, ineffective pressure relief or valve jamming, thereby ensuring the integrity and safety of the pressure relief process.

[0024] (4) The method and device for rapid bidirectional shut-off of pressure relief in the gas supply system of the pressure swing adsorption device, by establishing a linkage relationship between the pressure relief execution judgment value and the expansion risk assessment value, transforms the pressure relief action from passive response to active judgment, establishes a collaborative triggering model between pressure difference drive, structural resistance and shut-off state, and breaks through the limitation of poor adaptability of traditional single-factor control strategies to complex working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 Flow chart of the two-way rapid shut-off method for pressure relief of the gas supply system of the pressure swing adsorption device;

[0026] Figure 2 This is the structural diagram of the two-way quick-cut device for pressure relief of the gas supply system of the pressure swing adsorption device;

[0027] Figure 3 A schematic diagram of the expansion risk assessment value and trigger mark;

[0028] Figure 4 This is a fluctuation trend chart of the pressure relief execution judgment value. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] See also Figures 1-4 , an embodiment of the present invention provides a technical solution: a two-way rapid shut-off method and device for pressure relief of the gas supply system of a pressure swing adsorption device, comprising the following steps: S1, real-time acquisition and control of system status feedback through multi-point sensors to obtain gas supply pressure relief data, and pre-process the gas supply pressure relief data; S2, establishing a sliding monitoring window, evaluating the expansion risk based on the pre-processed gas supply pressure relief data, determining whether to trigger the pressure relief control instruction based on the evaluation result, and outputting the expansion risk data set; S3, reading the expansion risk data set, comprehensively determining whether to execute pressure relief based on the expansion risk evaluation value, trigger flag and pressure relief direction, and controlling the micro-pressure relief action response; S4, evaluating the degree of pressure relief abnormality based on the deviation of multiple variables in the pressure relief execution process, identifying the abnormality type and triggering the corresponding safety response strategy in linkage to achieve closed-loop control.

[0031] Specifically, the specific steps of collecting and controlling the system status feedback through multi-point sensors in real time, obtaining the air supply pressure relief data, and preprocessing the air supply pressure relief data are as follows: collecting and controlling the system status feedback through multi-point sensors in real time, obtaining the air supply pressure relief data, the air supply pressure relief data includes the dead space pressure before the valve, the dead space pressure after the valve, the real-time pressure difference, the temperature before the valve, the temperature after the valve, the valve cut-off state, the dead space volume before the valve, the dead space volume after the valve, the valve action resistance and the heat flux of the outer wall of the dead space; wherein, the dead space pressure before the valve and the dead space pressure after the valve are obtained by installing a high-precision pressure sensor; the real-time pressure difference is obtained by measuring the pressure before and after the valve and calculating the difference; the temperature before the valve and the temperature after the valve are obtained by arranging thermistors; and the heat flux of the valve control valve is obtained by reading the temperature of the valve control valve. The valve shut-off status is obtained from the controller status signal, where the valve shut-off is recorded as 1 and the valve not shut-off is recorded as 0; the dead space volume before the valve and the dead space volume after the valve are obtained through structural parameter setting and factory calibration; the valve action resistance is obtained by monitoring the actuator torque sensor signal; the heat flux of the outer wall of the dead space is obtained by installing a heat flow sensor; the air supply pressure relief data is locally smoothed by the sliding window averaging algorithm; the dynamic process variables in the air supply pressure relief data are removed by the median filtering algorithm to stabilize the data distribution; the energy input variables in the air supply pressure relief data are processed by the time-weighted accumulation method; the air supply pressure relief data are standardized by the range normalization algorithm, the numerical scale is unified, and the normalization of the air supply pressure relief data is completed.

[0032] In this implementation plan, by performing multi-point real-time collection and sliding window, filtering, median correction, time weighting and range normalization processing on the gas supply pressure relief data such as the dead space pressure before the valve, the dead space pressure after the valve, the real-time pressure difference, the temperature before the valve, the temperature after the valve, the valve cut-off status, the dead space volume before the valve, the dead space volume after the valve, the valve action resistance and the heat flux of the outer wall of the dead space, the stability, continuity and comparability of the gas supply pressure relief data are improved, providing a high-quality, low-noise and unified-dimensional input basis for subsequent risk identification and control decisions.

[0033] Specifically, the specific steps of establishing a sliding monitoring window and evaluating the expansion risk based on the pre-processed air supply pressure relief data are as follows: construct a sliding monitoring window, read the pre-processed air supply pressure relief data at a fixed sampling interval, and push them into the sliding monitoring window in chronological order to continuously evaluate the local dynamic state of the dead space area; within the monitoring window, calculate the dead space pressure values ​​before the valve at adjacent moments by the first-order difference algorithm, and obtain the dead space pressure change rate before the valve as a sensitive indicator reflecting the pressure change trend; multiply the dead space pressure change rate before the valve by the dead space volume before the valve and then divide it by the valve The square of the dead space temperature before the valve is added to obtain the pressure rise term that reflects the growth rate of volume-pressure coupling under unit thermal state; the heat flux of the outer wall of the dead space is added by one and then the natural logarithm is taken, and then divided by the temperature before the valve to obtain the heat flux growth term that reflects the degree of influence of the heat input of the structural boundary on the gas expansion; the square of the valve action resistance is divided by the volume of the dead space before the valve to obtain the structural resistance term, which is used to characterize the hysteresis factor of the structural motion characteristics to the pressure relief response; the pressure rise term, the heat flux growth term and the structural resistance term are added in sequence to obtain the expansion risk assessment value, which is used as the key input for the subsequent pressure relief trigger judgment.

[0034] The specific calculation formula for the inflation risk assessment value is:

[0035] ;

[0036] Where R represents the expansion risk assessment value, D represents the dead space pressure change rate before the valve, V represents the dead space volume before the valve, T represents the temperature before the valve, H represents the heat flux of the outer wall of the dead space, and M represents the valve action resistance.

[0037] In this embodiment, Table 1 is a data table of expansion risk assessment values, which lists the key physical parameters of the air supply pressure relief data under 5 monitoring windows and the corresponding expansion risk assessment results, and is used to quantify the degree of influence of the dead space expansion trend on the pressure relief trigger judgment under different working conditions. Among them, in window 1, the dead space pressure change rate before the valve is 2500, the dead space volume before the valve is 0.0050, the temperature before the valve is 298, the heat flux of the dead space outer wall is 35, and the valve action resistance is 0.7, and the corresponding calculated expansion risk assessment value is 98.01; in window 2, the dead space pressure change rate before the valve is 3000, the dead space volume before the valve is 0.0045, the temperature before the valve is 303, the heat flux of the dead space outer wall is 40, and the valve action resistance is 0.8, and the corresponding expansion risk assessment value is 142.24; the dead space pressure change rate before the valve in window 3 is 2700, the dead space volume before the valve is 0.0048, and the temperature before the valve is 0. The dead space pressure in window 4 is 2600, the dead space volume in front of the valve is 0.0052, the temperature in front of the valve is 300, the heat flux of the dead space outer wall is 42, the valve action resistance is 0.65, and the calculated expansion risk assessment value is 81.26; the dead space pressure in front of window 5 is 2400, the dead space volume in front of the valve is 0.0049, the temperature in front of the valve is 295, the heat flux of the dead space outer wall is 36, the valve action resistance is 0.72, and the expansion risk assessment value is 105.81.

[0038] Table 1 Expansion risk assessment value data table

[0039]

[0040] like Figure 3 The figure below shows a schematic diagram of the expansion risk assessment value and trigger flag, visually illustrating their changes over five consecutive monitoring windows. In window 1, the expansion risk assessment value was slightly below the expansion risk threshold, and the trigger flag was 0. In windows 2 and 3, the expansion risk assessment values ​​reached 142.24 and 117.20, respectively, significantly exceeding the expansion risk threshold, and the trigger flags were both 1. In window 4, the expansion risk assessment value was 81.26, below the expansion risk threshold, corresponding to a trigger flag of 0. In window 5, the assessment value rose again to 105.81, and the trigger flag was reset to 1. The overall trend reflects the expansion risk assessment value's ability to accurately drive the triggering state of the pressure relief control command, effectively demonstrating the dynamic response characteristics of the determination mechanism.

[0041] In this implementation scheme, by constructing a sliding monitoring window and constructing the pressure rise term, heat flux growth term and structural resistance term based on the air supply pressure relief data such as the dead space pressure change rate in front of the valve, the dead space volume in front of the valve, the temperature in front of the valve, the heat flux of the outer wall of the dead space and the valve action resistance, the core change characteristics reflecting the expansion trend can be extracted in real time, and the expansion risk assessment value can be effectively formed, providing a judgment basis with dynamic sensitivity and physical rationality for the subsequent pressure relief execution judgment.

[0042] Specifically, the specific steps for determining whether to trigger the pressure relief control instruction based on the evaluation results and outputting the expansion risk data set are as follows: real-time comparison of the expansion risk assessment value and the expansion risk threshold; when the expansion risk assessment value is greater than or equal to the expansion risk threshold, it indicates that there is a gas expansion risk in the current dead space, the trigger flag is assigned a value of 1, and a control instruction is generated to drive the micro pressure relief device to perform the pressure relief action. The control instruction serves as an execution signal for the change of the air supply path state; when the expansion risk assessment value is less than the expansion risk threshold, it indicates that the current working condition does not meet the pressure relief condition, the trigger flag is assigned a value of 0, the control instruction remains in an empty state, and the air supply pressure relief data at the current moment is continued to be monitored; the air supply pressure relief data, expansion risk assessment value, expansion risk threshold and trigger flag under the current round are combined into a complete data record and output as an expansion risk data set. The expansion risk data set is used to support the subsequent pressure relief action execution and control abnormality judgment; at the same time, the sliding monitoring window is moved to the next moment position, maintaining the continuity of the time sequence, and entering the next round of air supply pressure relief data sampling and judgment process to realize a dynamic update mechanism based on continuous sampling.

[0043] In this implementation scheme, by comparing the expansion risk assessment value with the expansion risk threshold in real time, combining the dynamic assignment of the trigger mark with the time series integration of the air supply pressure relief data, it is possible to continuously output a structurally complete expansion risk data set, establish a judgment mechanism that drives the control instructions based on the expansion trend, and ensure that the pressure relief action is accurately triggered based on the air supply pressure relief data such as the dead space pressure change rate in front of the valve, the dead space volume in front of the valve, the temperature in front of the valve, the heat flux of the outer wall of the dead space and the valve action resistance, so as to achieve the orderly sliding of the monitoring window and the closed-loop advancement of the judgment process.

[0044] Specifically, the specific steps of reading the expansion risk data set and comprehensively considering the expansion risk assessment value, the trigger flag and the pressure relief direction to determine whether to perform pressure relief are as follows: reading the expansion risk data set, which consists of the air supply pressure relief data, the expansion risk assessment value, the expansion risk threshold and the trigger flag; when the trigger flag is 1 and the valve cut-off state is 1, the pressure relief control logic is entered, and the valve cut-off state is extracted from the air supply pressure relief data, indicating that the micro pressure relief device is in an executable state; when any condition is not met, the pressure relief action of this cycle is skipped, and the monitoring process is returned to continue to receive the next round of air supply pressure relief data; the dead space pressure before the valve is compared with The dead space pressure behind the valve is compared. The dead space pressure before the valve and the dead space pressure after the valve are both real-time physical quantities in the air supply pressure relief data. If the dead space pressure before the valve is greater than the dead space pressure after the valve, the pressure relief direction is determined to be in the direction before the valve. At this time, the pressure gradient is released from the air supply source side to the outside; if the dead space pressure after the valve is greater than the dead space pressure before the valve, the pressure relief direction is determined to be in the direction after the valve. At this time, the residual gas inside the structure is preferentially released to the downstream path; based on the expansion risk data set, combined with the expansion risk assessment value, real-time pressure difference, valve action resistance, valve cut-off state and pressure relief adjustment coefficient, the pressure relief execution judgment value is calculated for subsequent control instruction generation and pressure relief action decision.

[0045] In this implementation plan, by reading the expansion risk data set and combining it with the trigger flag, valve cut-off status, dead space pressure before the valve, dead space pressure after the valve, real-time pressure difference, valve action resistance and pressure relief adjustment coefficient and other air supply pressure relief data, the execution conditions and direction of the pressure relief action can be clarified, and a linkage judgment mechanism based on expansion trend and pressure distribution can be established to ensure that the pressure relief control logic is accurately started when the trigger requirements are met, and automatically falls back to the monitoring process when the conditions are not met, thereby improving the response consistency and execution accuracy of the control chain.

[0046] Specifically, based on the expansion risk data set, the specific steps for calculating the pressure relief execution judgment value are as follows: subtract the expansion risk threshold from the expansion risk assessment value to obtain the risk response item; divide the absolute value of the real-time pressure difference by the valve action resistance plus one to obtain the pressure difference adjustment item. The real-time pressure difference and the valve action resistance are both process variables in the air supply pressure relief data, which are used to reflect the correction effect of the current pressure relief resistance on the pressure release capacity; calculate the exponential function value with the natural constant as the base and the negative number of the product of the risk response item and the pressure relief adjustment coefficient as the exponent, add one to the exponential function value as the denominator, and use the valve cut-off state as the numerator to calculate the numerator and numerator. The mother ratio value is obtained to obtain the state control item, which reflects the possibility of effective response of the pressure relief action under the current control instruction; among them, a nonlinear relationship model is established between the historical expansion risk assessment value and the actual pressure relief action response data through the exponential fitting algorithm, and the slope parameter is extracted from it to obtain the pressure relief adjustment coefficient, and the value range of the pressure relief adjustment coefficient is [0,1]; the risk response item, the pressure difference adjustment item and the state control item are multiplied in sequence to obtain the pressure relief execution judgment value. The pressure relief execution judgment value is used as the core quantitative basis for determining whether to issue a pressure relief instruction, and is used for subsequent comparison with the pressure relief execution threshold to guide the pressure relief device to execute the action.

[0047] The specific calculation formula for the pressure relief execution judgment value is:

[0048] ;

[0049] Where, E represents the pressure relief execution judgment value, R represents the expansion risk assessment value, represents the inflation risk threshold, Indicates the real-time pressure difference, M indicates the valve action resistance, F indicates the valve cut-off state, and k indicates the pressure relief adjustment coefficient.

[0050] In this embodiment, Table 2 is a pressure relief execution determination value data table, which lists the expansion risk assessment values ​​and key control parameters under 45 monitoring windows. It is used to analyze the calculation process of the pressure relief execution determination value and its corresponding control state under different working conditions. Specifically, in the C01 monitoring window, the expansion risk assessment value is 103.2, the expansion risk threshold is 100, the real-time pressure difference is 12.8, the valve action resistance is 0.70, the valve cut-off state is 1, and the calculated pressure relief execution determination value is 12.10; in the C02 monitoring window, the expansion risk assessment value is 104.5, the real-time pressure difference is 12.0, the valve action resistance is 0.75, the valve cut-off state is 1, and the pressure relief execution determination value is 15.47; in C03, the expansion risk assessment value is 103. 9, the real-time pressure difference is 12.4, the valve action resistance is 0.75, the valve cut-off state is 1, and the pressure relief execution judgment value is 13.84; in C04, the expansion risk assessment value is 104.0, the real-time pressure difference is 13.7, the valve action resistance is 0.78, the valve cut-off state is 1, and the pressure relief execution judgment value is 15.46; in C05, the expansion risk assessment value is 103.7, the real-time pressure difference is 12.8, the valve action resistance is 0.70, the valve cut-off state is 1, and the pressure relief execution judgment value is 14.10.

[0051] Table 2 Pressure relief execution judgment value data table

[0052]

[0053] like Figure 4 As shown, it is a fluctuation trend diagram of the pressure relief execution judgment value, which shows the dynamic change trend of the pressure relief execution judgment value under multiple monitoring windows, and intuitively marks the trigger status at each moment in combination with the pressure relief execution threshold. The vertical axis in the figure is the pressure relief execution judgment value, the horizontal axis is the monitoring window number, and the red dotted line represents the pressure relief execution threshold, which is used to distinguish between triggered and non-triggered states. In windows C02, C04 and C05, the pressure relief execution judgment value exceeds the pressure relief execution threshold, the trigger flag is 1, and the pressure relief control process enters; while in C01 and C03, the pressure relief execution judgment value does not reach the pressure relief execution threshold, the trigger flag is 0, and the monitoring state is maintained. This figure verifies the judgment logic and response accuracy of the pressure relief control system under different monitoring cycles.

[0054] In this implementation scheme, by jointly modeling the air supply pressure relief data such as the expansion risk assessment value, expansion risk threshold, real-time pressure difference, valve action resistance, pressure relief adjustment coefficient and valve cut-off status, a multi-factor relationship between the risk response item, the pressure difference adjustment item and the state control item is constructed. This can quantify the triggering strength of the pressure relief action and form a pressure relief execution judgment value with dynamic response capability, which is used to accurately judge whether the actual conditions for executing pressure relief are met at the current moment.

[0055] Specifically, the specific steps for controlling the response of the micro-pressure relief action are as follows: compare the pressure relief execution judgment value and the pressure relief execution threshold in real time. When the pressure relief execution judgment value is greater than or equal to the pressure relief execution threshold, send an open signal to the corresponding pressure relief channel to drive the micro-pressure relief device to respond to the current working conditions; otherwise, remain in the closed state, continue to monitor the air supply pressure relief data, and re-judge after the triggering conditions are met; continuously read the expansion risk assessment value and the real-time pressure difference during the pressure relief process. The expansion risk assessment value is used to reflect the expansion trend inside the dead space, and the real-time pressure difference is used to reflect the degree of pressure release during the pressure relief process. If the expansion risk assessment value is lower than the expansion risk threshold for three consecutive monitoring windows, and the real-time pressure difference is lower than the minimum pressure difference threshold for three consecutive monitoring windows, it is determined that the pressure relief process has reached the target release state, and a pressure relief closing instruction is sent to terminate this round of pressure relief action and return to the data monitoring process.

[0056] In this implementation scheme, by continuously comparing the pressure relief execution judgment value with the pressure relief execution threshold, and combining the expansion risk assessment value with the continuous change trend of the real-time pressure difference in multiple monitoring windows, the precise triggering and automatic closing control of the micro-pressure relief action can be achieved, ensuring that the pressure relief process is terminated in time when the gas supply pressure relief data conditions such as the valve cut-off state, sufficient pressure differential release and the elimination of expansion risk are met, thereby improving the closed-loop reliability of the pressure relief behavior and the working condition matching of the response rhythm.

[0057] Specifically, the specific steps for evaluating the degree of pressure relief abnormality based on the deviation of multiple variables in the pressure relief execution process are as follows: read the expansion risk assessment value, pressure relief execution judgment value, valve cut-off state, pressure relief execution threshold and gas supply pressure relief data in the current monitoring window to form an abnormal state assessment variable set, which is used to support the calculation basis of abnormality identification; based on the abnormal state assessment variable set, quantify the abnormal degree of pressure relief action: divide the square of the difference between the expansion risk assessment value and the expansion risk threshold by the square of the temperature before the valve to obtain the risk deviation term, the temperature before the valve is derived from the gas supply pressure relief data, and reflects the risk fluctuation amplitude under hot conditions; calculate the square value of the difference between the pressure relief execution threshold and the pressure relief execution judgment value as the numerator, calculate the absolute value of the real-time pressure difference plus 1 as the denominator, and calculate the real-time pressure difference. The pressure difference is also taken from the air supply pressure relief data, which is used to describe the driving strength of the pressure relief process. The numerator is divided by the denominator to obtain the response hysteresis term, which is used to describe the degree of delay between the pressure relief judgment and the execution action; the square of the valve action resistance is divided by the dead space volume in front of the valve as the structural load term, which reflects the degree of interference of mechanical resistance on the pressure relief behavior during the valve opening process; the valve cut-off state is inverted as the action abnormality item. The valve cut-off state is obtained in real time from the air supply pressure relief data. When the state value is 0, it means that the pressure relief command has not been executed; the risk deviation item, response hysteresis item, structural load item and action abnormality item are added in sequence to obtain the pressure relief abnormality assessment value, which is used to characterize the overall deviation degree of the pressure relief action under the current monitoring window, and provide a quantitative basis for the judgment of the subsequent response strategy.

[0058] The specific calculation formula for the pressure relief abnormality assessment value is:

[0059] ;

[0060] In the formula, S represents the pressure relief abnormality assessment value, R represents the expansion risk assessment value, Indicates the expansion risk threshold, T indicates the temperature before the valve, and E indicates the pressure relief execution judgment value. Indicates the pressure relief execution threshold. Indicates the real-time pressure difference, M indicates the valve action resistance, V indicates the dead space volume before the valve, and F indicates the valve cut-off state.

[0061] In this implementation plan, by extracting air supply pressure relief data such as expansion risk assessment value, pressure relief execution judgment value, pressure relief execution threshold, real-time pressure difference, valve action resistance, valve cut-off status, valve front temperature and valve front dead space volume, a deviation structure of risk deviation item, response lag item, structural load item and action abnormality item is constructed, which can comprehensively measure the degree of abnormality in the pressure relief execution process, form a pressure relief abnormality assessment value with identification ability, and provide judgment support for subsequent determination of control abnormality type and activation of safety response process.

[0062] Specifically, the specific steps for identifying the abnormality type and triggering the corresponding safety response strategy in linkage to achieve closed-loop control are as follows: real-time comparison of the pressure relief abnormality assessment value and the pressure relief abnormality threshold. When the pressure relief abnormality assessment value is greater than the pressure relief abnormality threshold, the current pressure relief action is determined to be a high-level control abnormality, and the safety linkage processing flow is entered: according to the trigger flag, pressure relief execution judgment value, expansion risk assessment value, real-time pressure difference, valve action resistance and valve cut-off status that constitute the pressure relief abnormality assessment value, their combination relationship is analyzed, and the abnormality type is classified into trigger failure, pressure relief invalid and valve stuck, and the current time and judgment result are recorded; the corresponding linkage strategy is executed according to the abnormality type: when the trigger fails to respond, the control logic is suspended and a risk alarm is issued; when the pressure relief is invalid, the backup pressure relief channel is switched; when the valve is stuck, a forced closing instruction is sent to the gas supply source; the abnormality type, pressure relief abnormality assessment value, response strategy and time are combined into a complete abnormality record, written into the abnormality log table, and synchronously backed up; after the linkage response is completed, the control process closes the current monitoring window, and automatically enters the next monitoring window as the gas supply pressure relief data continues to advance, forming a continuous closed-loop operation mechanism.

[0063] In this implementation scheme, by comparing the pressure relief abnormality assessment value with the pressure relief abnormality threshold in real time, and combining the combination relationship between variables such as the trigger mark, pressure relief execution judgment value, expansion risk assessment value, real-time pressure difference, valve action resistance and valve cut-off status of the air supply pressure relief data analysis, the control abnormality type in the pressure relief process can be accurately identified, and dynamically classified as trigger failure, pressure relief ineffective or valve stuck, and the linkage strategy of suspending control, switching channels or forced valve closing is matched and executed. After establishing a complete abnormality record, the monitoring window is automatically advanced to realize a closed-loop safety control mechanism based on the continuous evolution of the pressure relief process.

[0064] like Figure 2 As shown, the second aspect of the present invention provides a two-way quick shut-off device for pressure relief of the gas supply system of a pressure swing adsorption device, including: a gas supply pressure relief data acquisition and preprocessing module, an expansion risk assessment and pressure relief triggering module, a pressure relief control execution logic processing module and an abnormality recording and safety linkage response module, wherein: the gas supply pressure relief data acquisition and preprocessing module is used to collect and control system status feedback in real time through multi-point sensors, obtain gas supply pressure relief data, and preprocess the gas supply pressure relief data; the expansion risk assessment and pressure relief triggering module is used to establish a sliding monitoring window, assess the expansion risk based on the preprocessed gas supply pressure relief data, determine whether to trigger the pressure relief control instruction based on the assessment result, and output the expansion risk data set; the pressure relief control execution logic processing module is used to read the expansion risk data set, comprehensively determine whether to execute pressure relief based on the expansion risk assessment value, trigger flag and pressure relief direction, and control the micro pressure relief action response; the abnormality recording and safety linkage response module is used to assess the degree of pressure relief abnormality based on the deviation of multiple variables in the pressure relief execution process, identify the abnormality type and trigger the corresponding safety response strategy in a linkage manner to achieve closed-loop control.

[0065] In this implementation plan, by collecting and preprocessing the air supply pressure relief data such as the dead space pressure before the valve, the dead space pressure after the valve, the real-time pressure difference, the temperature before the valve, the temperature after the valve, the valve cut-off status, the dead space volume before the valve, the dead space volume after the valve, the valve action resistance and the heat flux of the outer wall of the dead space, a sliding monitoring window is constructed to dynamically evaluate the expansion risk, determine the pressure relief triggering conditions and generate an expansion risk data set, and control the micro-pressure relief action response in combination with the pressure relief direction and the triggering status. The expansion risk assessment value, the pressure relief execution judgment value, the pressure relief execution threshold, the pressure relief abnormality assessment value and the degree of deviation from the monitoring variable are compared in real time, and the abnormal types such as trigger failure, invalid pressure relief and valve sticking are classified and identified, and the corresponding safety response strategy is executed to realize the closed-loop control of the whole process based on the continuous evolution of the air supply pressure relief data.

[0066] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0067] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A method for rapid bidirectional shutoff of pressure relief in a gas supply system of a pressure swing adsorption device, characterized in that: The following steps are involved: S1, acquires gas supply and pressure relief data through real-time collection and control of system status feedback via multi-point sensors, and pre-processes the gas supply and pressure relief data; S2: Establish a sliding monitoring window, evaluate the expansion risk based on the pre-processed air supply pressure relief data, determine whether to trigger the pressure relief control instruction based on the evaluation results, and output the expansion risk data set; S3, read the expansion risk data set, comprehensively consider the expansion risk assessment value, trigger flag and pressure relief direction to determine whether to perform pressure relief, and control the micro-pressure relief action response; S4, based on the deviation of multiple variables during the pressure relief execution process, evaluates the degree of pressure relief abnormality, identifies the abnormality type and triggers the corresponding safety response strategy to achieve closed-loop control.

2. A method for rapid two-way shutoff of pressure relief in a gas supply system of a pressure swing adsorption device according to claim 1, characterized in that: The specific steps of acquiring gas supply pressure relief data by real-time acquisition and control of system status feedback through multi-point sensors and preprocessing the gas supply pressure relief data are as follows: Through multi-point sensors, real-time data collection and control of system status feedback are used to obtain gas supply pressure relief data, including dead space pressure before the valve, dead space pressure after the valve, real-time pressure difference, temperature before the valve, temperature after the valve, valve cut-off status, dead space volume before the valve, dead space volume after the valve, valve action resistance and heat flux of the outer wall of the dead space; The air supply pressure relief data is locally smoothed using the sliding window averaging algorithm; the dynamic process variables in the air supply pressure relief data are removed with the median filtering algorithm to stabilize the data distribution; the energy input variables in the air supply pressure relief data are processed using the time-weighted accumulation method; the air supply pressure relief data are standardized using the range normalization algorithm to unify the numerical scale and complete the normalization of the air supply pressure relief data.

3. A method for rapid bidirectional shutoff of pressure relief in a gas supply system of a pressure swing adsorption device according to claim 1, characterized in that: The specific steps of establishing a sliding monitoring window and evaluating the expansion risk based on the pre-processed gas supply pressure relief data are as follows: A sliding monitoring window is constructed to read pre-processed air supply pressure relief data at fixed sampling intervals and push them into the sliding monitoring window in chronological order. Within the monitoring window, the dead space pressure values ​​before the valve at adjacent moments are calculated using a first-order difference algorithm to obtain the dead space pressure change rate before the valve. The pressure rise term is obtained by multiplying the pressure change rate of the dead space in front of the valve by the volume of the dead space in front of the valve, and then dividing it by the square of the temperature in front of the valve. The heat flux growth term is obtained by adding one to the heat flux of the outer wall of the dead space, taking the natural logarithm, and then dividing it by the temperature in front of the valve. The structural resistance term is obtained by dividing the square of the valve action resistance by the volume of the dead space in front of the valve. The pressure rise term, the heat flux growth term, and the structural resistance term are added in sequence to obtain the expansion risk assessment value.

4. A method for rapid bidirectional shutoff of pressure relief in a gas supply system of a pressure swing adsorption device according to claim 1, characterized in that: The specific steps of determining whether to trigger the pressure relief control instruction based on the evaluation results and outputting the expansion risk data set are as follows: The expansion risk assessment value and the expansion risk threshold are compared in real time. If the expansion risk assessment value is greater than or equal to the expansion risk threshold, the trigger flag is assigned a value of 1, and a control instruction is generated to drive the micro pressure relief device to perform a pressure relief action. If the expansion risk assessment value is less than the expansion risk threshold, the trigger flag is assigned a value of 0, the control instruction remains in an empty state, and the air supply pressure relief data continues to be monitored. The gas supply pressure relief data, expansion risk assessment value, expansion risk threshold and trigger flag are combined into a data record and output as an expansion risk data set; at the same time, the monitoring window is moved to the next moment position to enter the next round of sampling and judgment process to achieve continuous dynamic update.

5. A method for rapid two-way shutoff of pressure relief in a gas supply system of a pressure swing adsorption device according to claim 1, characterized in that: The specific steps of reading the inflation risk data set and determining whether to perform pressure relief based on the inflation risk assessment value, the trigger flag, and the pressure relief direction are as follows: Read the expansion risk data set. When the trigger flag is 1 and the valve cut-off state is 1, enter the pressure relief control logic. If any of the conditions are not met, skip the pressure relief action of this cycle and return to the monitoring process. Compare the dead space pressure before the valve with the dead space pressure after the valve. If the dead space pressure before the valve is greater than the dead space pressure after the valve, determine that the pressure relief direction is in the direction before the valve; if the dead space pressure after the valve is greater than the dead space pressure before the valve, determine that the pressure relief direction is in the direction after the valve. Calculate the pressure relief execution judgment value based on the expansion risk data set.

6. A method for rapid bidirectional shutoff of pressure relief in a gas supply system of a pressure swing adsorption device according to claim 5, characterized in that: The specific steps of calculating the pressure relief execution determination value based on the inflation risk data set are as follows: Subtract the expansion risk threshold from the expansion risk assessment value to obtain the risk response item; divide the absolute value of the real-time pressure difference by the valve action resistance plus one to obtain the pressure difference adjustment item; calculate the exponential function value with the natural constant as the base and the negative of the product of the risk response item and the pressure relief adjustment coefficient as the exponent, add one to the exponential function value as the denominator, and use the valve cut-off state as the numerator, calculate the ratio of the numerator and denominator to obtain the state control item; multiply the risk response item, the pressure difference adjustment item and the state control item in sequence to obtain the pressure relief execution judgment value.

7. A method for rapid bidirectional shutoff of pressure relief in a gas supply system of a pressure swing adsorption device according to claim 1, characterized in that: The specific steps of controlling the micro pressure relief action response are as follows: Compare the pressure relief execution judgment value and the pressure relief execution threshold in real time. When the pressure relief execution judgment value is greater than or equal to the pressure relief execution threshold, send an opening signal to the corresponding pressure relief channel; otherwise, keep the closed state and continue monitoring; During the pressure relief process, the expansion risk assessment value and the real-time pressure difference are continuously read. If both are lower than the expansion risk threshold and the minimum pressure difference threshold for three consecutive monitoring windows, the pressure relief is determined to be complete and a pressure relief shutdown command is sent.

8. The method for rapid bidirectional shutoff of pressure relief in a gas supply system of a pressure swing adsorption device according to claim 1, characterized in that: The specific steps of evaluating the degree of pressure relief abnormality based on the deviation of multiple variables during the pressure relief execution process are as follows: Read the expansion risk assessment value, pressure relief execution judgment value, valve cut-off status, pressure relief execution threshold and gas supply pressure relief data within the current monitoring window to form an abnormal state assessment variable set; Based on the abnormal state assessment variable set, the abnormal degree of the pressure relief action is quantified: the square of the difference between the expansion risk assessment value and the expansion risk threshold is divided by the square of the valve inlet temperature to obtain the risk deviation term; Calculate the square value of the difference between the pressure relief execution threshold and the pressure relief execution judgment value as the numerator, calculate the absolute value of the real-time pressure difference plus 1 as the denominator, divide the numerator by the denominator to obtain the response lag term; divide the square of the valve action resistance by the dead space volume in front of the valve as the structural load term; invert the valve cut-off state as the action abnormality term; add the risk deviation term, response lag term, structural load term and action abnormality term in sequence to obtain the pressure relief abnormality assessment value.

9. A method for rapid bidirectional shutoff of pressure relief in a gas supply system of a pressure swing adsorption device according to claim 1, characterized in that: The specific steps for identifying the abnormality type and triggering the corresponding security response strategy to achieve closed-loop control are as follows: Compare the pressure relief abnormality assessment value and the pressure relief abnormality threshold in real time. When the pressure relief abnormality assessment value is greater than the pressure relief abnormality threshold, the current pressure relief action is judged to be a high-level control abnormality, and enter the safety linkage processing process: according to the trigger flag, pressure relief execution judgment value, expansion risk assessment value, real-time pressure difference, valve action resistance and valve cut-off status that constitute the pressure relief abnormality assessment value, analyze their combined relationship, classify the abnormality type into trigger failure, pressure relief invalid and valve stuck, and record the current time and judgment result; execute the corresponding linkage strategy according to the abnormality type: suspend the control logic and issue a risk alarm when the trigger fails to respond; switch to the backup pressure relief channel when the pressure relief is invalid; send a forced closing instruction to the air supply source when the valve is stuck; Combine the anomaly type, pressure relief anomaly assessment value, response strategy, and time into a complete anomaly record, write it into the anomaly log table, and synchronize the backup; After the linkage response is completed, the control process closes the current monitoring window and automatically enters the next monitoring window as the gas supply pressure relief data continues to advance, forming a continuous closed-loop operation mechanism.

10. A two-way quick shut-off device for pressure relief of the gas supply system of a pressure swing adsorption device, characterized by: include: Gas supply pressure relief data acquisition and preprocessing module, expansion risk assessment and pressure relief trigger module, pressure relief control execution logic processing module and abnormality recording and safety linkage response module, including: The gas supply pressure relief data acquisition and preprocessing module is used to acquire gas supply pressure relief data in real time through multi-point sensors and control system status feedback, and preprocess the gas supply pressure relief data; The expansion risk assessment and pressure relief triggering module is used to establish a sliding monitoring window, assess the expansion risk based on the pre-processed gas supply pressure relief data, determine whether to trigger the pressure relief control instruction based on the assessment result, and output the expansion risk data set; The pressure relief control execution logic processing module is used to read the expansion risk data set, comprehensively determine whether to execute pressure relief based on the expansion risk assessment value, the trigger flag and the pressure relief direction, and control the micro pressure relief action response; The abnormality record and safety linkage response module is used to evaluate the degree of pressure relief abnormality based on the deviation of multiple variables during the pressure relief execution process, identify the abnormality type and trigger the corresponding safety response strategy in a linkage manner to achieve closed-loop control.

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