A tank risk warning intelligent monitoring system

Abstract

The present invention relates to the technical field of data processing, and specifically discloses an intelligent monitoring system for early warning of storage tank risks, comprising a data acquisition module, a parameter change rate calculation module, a data processing module and an early warning module; the data acquisition module is responsible for real-time monitoring of key data of the storage tank, and transmitting the monitored data to the data processing module in real time; the parameter change rate calculation module calculates the pressure change rate, temperature change rate and liquid level change rate according to the data collected by the sensor; the data processing module establishes a comprehensive evaluation model according to the data collected by the sensor and the calculated pressure change rate, temperature change rate and liquid level change rate; the early warning module analyzes the comprehensive evaluation value calculated by the comprehensive evaluation model, discovers potential dangers and takes early warning measures in time.

Description

Technical Field

[0001] The present invention relates to the field of risk early warning of liquefied petroleum gas storage tanks, and more specifically, to an intelligent monitoring system for risk early warning of storage tanks. Background Art

[0002] During the use of LPG storage tanks, the LPG stored inside is flammable and explosive. Due to fluctuations or abnormalities in key parameters such as pressure, temperature, and liquid level of LPG storage tanks, these abnormalities are often interrelated and have a huge impact. For example, when the temperature rises suddenly, the LPG will vaporize quickly, causing the pressure in the tank to rise sharply; and when the liquid level is too high, the abnormal pressure change may be further aggravated due to the expansion of the liquid when the temperature changes. If these abnormal conditions are not detected and handled in time, it is very likely to cause an explosion accident of the LPG storage tank.

[0003] The existing liquefied petroleum gas storage tank monitoring technology cannot detect potential risk changes in a timely manner, and has problems such as insufficient accuracy and long response time. Most early warning systems rely solely on a single alarm mechanism, such as issuing an alarm based only on the pressure exceeding a certain set value, but fail to conduct a comprehensive assessment of multiple risk factors. Therefore, an intelligent monitoring system is needed that can monitor various parameters of the storage tank in real time and in multiple dimensions, and comprehensively assess risks, so as to more effectively ensure the safe use of liquefied petroleum gas storage tanks and avoid tragedies.

[0004] In order to solve the above problems, a technical solution is now provided. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides an intelligent monitoring system for storage tank risk warning, which uses sensors to accurately monitor the pressure data, temperature data and liquid level height of the liquefied petroleum gas storage tank in real time, and calculates the pressure change rate, temperature change rate and liquid level change rate. A comprehensive evaluation model is established based on the above parameters to obtain a comprehensive risk assessment value. It can monitor various parameters of the storage tank in real time and in multiple dimensions, and comprehensively evaluate the risk. When the comprehensive risk assessment value exceeds the preset safety assessment threshold, an alarm is triggered to reduce the risk of accidents such as explosion, so as to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A storage tank risk early warning intelligent monitoring system includes a data acquisition module, a parameter change rate calculation module, a data processing module and an early warning module; the data processing module collects pressure data, temperature data, liquid level data, pressure change rate, temperature change rate and liquid level change rate of a liquefied petroleum gas storage tank according to the data acquisition module, establishes a comprehensive risk assessment model, and provides risk assessment for the liquefied petroleum gas storage tank. The formula of the comprehensive assessment model is:

[0008] ,

[0009] Where: For time The comprehensive risk assessment value at the moment, For time The pressure data in the liquefied petroleum gas storage tank collected by the pressure sensor at all times, is the maximum allowable working pressure data of the liquefied petroleum gas storage tank, To adjust The weight in the comprehensive risk assessment value, For time The temperature data in the liquefied petroleum gas storage tank collected by the temperature sensor at any time, is the maximum safe operating temperature of the liquefied petroleum gas storage tank, To adjust The weight in the comprehensive risk assessment value, For time The liquid level height in the liquefied petroleum gas storage tank collected by the liquid level sensor at the moment, is the maximum permissible liquid level height of the liquefied petroleum gas storage tank, To adjust The weight in the comprehensive risk assessment value, For in time The rate of change of the pressure of the LPG tank at the moment, is the preset safety threshold of the pressure change rate, For in time The rate of change of the temperature of the LPG tank at the moment, is the preset safety threshold of the temperature change rate, For time The rate of change of the liquid level in the LPG tank at the moment, It is the preset safety threshold of liquid level change rate.

[0010] As a further solution of the present invention, the data acquisition module is responsible for real-time monitoring of key data of the storage tank and transmitting the monitored data to the data processing module in real time, including the following specific contents:

[0011] When liquefied petroleum gas is in a liquefied state, the pressure in the tank is usually high, so it is very important to monitor the pressure changes in the tank in real time. The data acquisition module monitors the pressure data in real time through pressure sensors installed on the top and bottom of the liquefied petroleum gas tank. The pressure sensor can accurately measure the pressure of the liquid in the oil tank and convert the pressure signal into an electrical signal that can be processed by the data processing module. The pressure value monitored by the pressure sensor helps to determine whether there is an abnormal pressure change in the tank. If the pressure value exceeds the set safety threshold, it may mean that there is a leak, temperature increase or other failure inside the tank, which may cause safety hazards. For example, if the gas pressure in the tank continues to rise, it may cause the risk of explosion of the tank. If the pressure is too low, it may indicate Liquefied petroleum gas leaks or the amount of gas in the tank decreases; the data acquisition module monitors the temperature changes inside the liquefied petroleum gas tank in real time through the temperature sensors installed at the bottom and top of the liquefied petroleum gas tank, and promptly detects abnormal temperature. Too high a temperature may cause the vapor pressure of the liquefied petroleum gas to increase, thereby increasing the pressure inside the tank, which may cause an explosion in severe cases, while too low a temperature may cause the liquid level to change, and may even affect the operation of the tank and the storage state of the gas. The temperature inside the liquefied petroleum gas tank is not only closely related to the gasification state of the liquid inside the tank, but also interacts with the atmospheric temperature outside the liquefied petroleum gas tank. A relationship model between the atmospheric temperature and the temperature change of the liquefied petroleum gas tank is established, and the formula of the relationship model is:

[0012] ,

[0013] Where: is the internal temperature of the liquefied petroleum gas storage tank, For time, is the thermal diffusion coefficient, is the heat exchange coefficient, is the external atmospheric temperature of the liquefied petroleum gas storage tank, For temperature The spatial rate of change of temperature, which describes the degree of temperature change in all directions;

[0014] The data acquisition module monitors the liquid level changes of the liquid inside the liquefied petroleum gas storage tank in real time through the liquid level sensor. Too high a liquid level may cause the tank to overload, increase the pressure inside the tank, and then cause an explosion. Too low a liquid level may cause dangerous situations such as gas leakage or empty tank operation. The liquid level sensor can provide high-precision liquid level data and transmit it to the data processing module through digital signals.

[0015] As a further solution of the present invention, the parameter change rate calculation module calculates the pressure change rate, temperature change rate and liquid level change rate according to the data collected by the sensor, including the following specific contents:

[0016] The parameter change rate calculation module calculates the change rate of each parameter by performing real-time analysis on the pressure data, temperature data and liquid level data collected by the sensor. Real-time understanding of the change rate of each parameter can effectively identify potential risks. The pressure change rate refers to the change in the internal pressure of the tank per unit time. In the liquefied petroleum gas storage tank, the pressure change rate is calculated by discretizing the pressure data collected by the sensor and then calculating its change value within a certain time interval. The calculation formula of the pressure change rate is:

[0017] ,

[0018] Where: For in time The rate of change of the pressure of the LPG tank at the moment, For time The pressure data in the liquefied petroleum gas storage tank collected by the pressure sensor at the moment, For in time Moment before moment The pressure value in the liquefied petroleum gas storage tank collected by the pressure sensor, is the time interval, and satisfy , through the calculation formula of the pressure change rate, the parameter change rate calculation module can monitor the change trend of the tank pressure in real time;

[0019] The temperature change rate refers to the speed at which the temperature inside the storage tank changes. During the storage process of liquefied petroleum gas, the change in temperature directly affects the pressure of the gas, and thus affects the safety of the storage tank. If the temperature inside the liquefied petroleum gas storage tank is too high, it may cause gas expansion or other dangers. The temperature data collected by the temperature sensor will be sent to the parameter change rate calculation module. The parameter change rate calculation module can perform differential calculation based on the temperature difference between two time points to obtain the temperature change rate. The calculation formula for the temperature change rate is:

[0020] ,

[0021] Where: For in time The rate of change of the temperature of the LPG tank at the moment, For time The temperature data in the liquefied petroleum gas storage tank collected by the temperature sensor at the moment, For in time Moment before moment The temperature data in the liquefied petroleum gas storage tank collected by the temperature sensor, is the time interval, and satisfy By calculating the temperature change rate, the parameter change rate calculation module can understand the temperature change trend of the storage tank in real time. If the temperature change rate increases abnormally, it may mean that an overheating reaction occurs in the storage tank or the external environment causes the temperature to rise rapidly;

[0022] The liquid level change rate refers to the change rate of the liquid height inside the storage tank. In the liquefied petroleum gas storage tank, the liquid level is an important indicator to measure the volume of the liquid in the storage tank, and the abnormal change of the liquid level is often related to the abnormal pressure or temperature inside the storage tank. The liquid level sensor continuously monitors the liquid level height inside the storage tank and sends the collected data to the parameter change rate calculation module. The parameter change rate calculation module calculates the change rate of the liquid level according to the change of the liquid level through the liquid level change rate calculation formula. The liquid level change rate calculation formula is:

[0023] ,

[0024] Where: For time The rate of change of the liquid level in the LPG tank at the moment, For time The liquid level height in the liquefied petroleum gas storage tank collected by the liquid level sensor at the moment, For in time Moment before moment The liquid level height in the liquefied petroleum gas storage tank collected by the liquid level sensor, is the time interval, and satisfy The calculation of the liquid level change rate can help the parameter change rate calculation module understand the consumption or accumulation of the tank liquid. In the liquefied petroleum gas tank, a low liquid level may mean leakage or excessive evaporation of the tank, while a high liquid level may mean that the liquid is not released in time, causing the internal pressure of the tank to exceed the standard.

[0025] As a further solution of the present invention, the early warning module analyzes the comprehensive evaluation value calculated by the comprehensive evaluation model, finds potential dangers, and takes early warning measures in time, including the following specific contents:

[0026] When the comprehensive evaluation value exceeds the predetermined safety assessment threshold, it indicates that the state of the liquefied petroleum gas storage tank has entered a high-risk area, and the early warning module is activated in time. The various parameters in the comprehensive evaluation model, such as pressure data, temperature data, liquid level change rate and threshold setting, will directly affect the sensitivity and response speed of the early warning trigger. If the pressure change rate is too fast or the temperature data rises sharply, the early warning module can quickly identify that the storage tank may face the risk of overpressure or explosion, and then trigger an early warning. After the early warning is triggered, the early warning module sends out an audible and visual signal alarm.

[0027] As a further solution of the present invention, the parameter change rate calculation module is connected to the data acquisition module, the data processing module is connected to the data acquisition module and the parameter change rate calculation module respectively, and the early warning module is connected to the data processing module.

[0028] The technical effects and advantages of the intelligent monitoring system for early warning of storage tank risks of the present invention are as follows:

[0029] The present invention utilizes a pressure sensor, a temperature sensor and a liquid level sensor through a data acquisition module to accurately monitor key data of a storage tank in real time. The pressure sensor can determine pressure anomalies, the temperature sensor can detect temperature anomalies and conduct in-depth analysis based on a model of the relationship between the atmosphere and the storage tank temperature, and the liquid level sensor can monitor liquid level changes to provide an accurate basis for subsequent evaluations. The parameter change rate calculation module calculates the change rates of each parameter, which can effectively identify potential risks. The comprehensive evaluation model established by the data processing module calculates risk assessment values ​​by comprehensively considering multiple factors. The early warning module is based on the analysis of the comprehensive evaluation value, and can be quickly triggered when the storage tank enters a high-risk area, and can promptly remind with an audible and visual signal alarm. The model parameters affect the early warning sensitivity and response speed. The overall system can effectively ensure the safe operation of the liquefied petroleum gas storage tank, overcome the defects of the prior art such as insufficient accuracy, slow response, and a single alarm mechanism, reduce the risk of accidents such as explosions, and reduce casualties and property losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of a storage tank risk early warning intelligent monitoring system of the present invention. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Example 1

[0033] See also Figure 1 As shown in the structural schematic diagram, an embodiment of the present invention provides an intelligent monitoring system for early warning of storage tank risks, including a data acquisition module, a parameter change rate calculation module, a data processing module and an early warning module; the data acquisition module is responsible for real-time monitoring of key data of the storage tank, and transmitting the monitored data to the data processing module in real time; the parameter change rate calculation module calculates the pressure change rate, temperature change rate and liquid level change rate according to the data collected by the sensor; the data processing module establishes a comprehensive evaluation model according to the data collected by the sensor and the calculated pressure change rate, temperature change rate and liquid level change rate; the early warning module analyzes the comprehensive evaluation value calculated by the comprehensive evaluation model, and takes early warning measures in time when potential dangers are found.

[0034] Furthermore, the data acquisition module is responsible for real-time monitoring of the key data of the storage tank and transmitting the monitored data to the data processing module in real time, including the following specific contents:

[0035] When liquefied petroleum gas is in a liquefied state, the pressure in the tank is usually high, so it is very important to monitor the pressure changes in the tank in real time. The data acquisition module monitors the pressure data in real time through pressure sensors installed on the top and bottom of the liquefied petroleum gas tank. The pressure sensor can accurately measure the pressure of the liquid in the oil tank and convert the pressure signal into an electrical signal that can be processed by the data processing module. The pressure value monitored by the pressure sensor helps to determine whether there is an abnormal pressure change in the tank. If the pressure value exceeds the set safety threshold, it may mean that there is a leak, temperature increase or other failure inside the tank, which may cause safety hazards. For example, if the gas pressure in the tank continues to rise, it may cause the risk of explosion of the tank. If the pressure is too low, it may indicate Liquefied petroleum gas leaks or the amount of gas in the tank decreases; the data acquisition module monitors the temperature changes inside the liquefied petroleum gas tank in real time through the temperature sensors installed at the bottom and top of the liquefied petroleum gas tank, and promptly detects abnormal temperature. Too high a temperature may cause the vapor pressure of the liquefied petroleum gas to increase, thereby increasing the pressure inside the tank, which may cause an explosion in severe cases, while too low a temperature may cause the liquid level to change, and may even affect the operation of the tank and the storage state of the gas. The temperature inside the liquefied petroleum gas tank is not only closely related to the gasification state of the liquid inside the tank, but also interacts with the atmospheric temperature outside the liquefied petroleum gas tank. A relationship model between the atmospheric temperature and the temperature change of the liquefied petroleum gas tank is established, and the formula of the relationship model is:

[0036] ,

[0037] Where: is the internal temperature of the liquefied petroleum gas storage tank, For time, is the thermal diffusion coefficient, is the heat exchange coefficient, is the external atmospheric temperature of the liquefied petroleum gas storage tank, For temperature The spatial rate of change of temperature, which describes the degree of temperature change in all directions;

[0038] The data acquisition module monitors the liquid level changes of the liquid inside the liquefied petroleum gas storage tank in real time through the liquid level sensor. Too high a liquid level may cause the tank to overload, increase the pressure inside the tank, and then cause an explosion. Too low a liquid level may cause dangerous situations such as gas leakage or empty tank operation. The liquid level sensor can provide high-precision liquid level data and transmit it to the data processing module through digital signals.

[0039] Furthermore, the parameter change rate calculation module calculates the pressure change rate, temperature change rate and liquid level change rate according to the data collected by the sensor, including the following specific contents:

[0040] The parameter change rate calculation module calculates the change rate of each parameter by performing real-time analysis on the pressure data, temperature data and liquid level data collected by the sensor. Real-time understanding of the change rate of each parameter can effectively identify potential risks. The pressure change rate refers to the change in the internal pressure of the tank per unit time. In the liquefied petroleum gas storage tank, the pressure change rate is calculated by discretizing the pressure data collected by the sensor and then calculating its change value within a certain time interval. The calculation formula of the pressure change rate is:

[0041] ,

[0042] Where: For in time The rate of change of the pressure of the LPG tank at the moment, For time The pressure data in the liquefied petroleum gas storage tank collected by the pressure sensor at the moment, For in time Moment before moment The pressure value in the liquefied petroleum gas storage tank collected by the pressure sensor, is the time interval, and satisfy , through the calculation formula of the pressure change rate, the parameter change rate calculation module can monitor the change trend of the tank pressure in real time;

[0043] The temperature change rate refers to the speed at which the temperature inside the storage tank changes. During the storage process of liquefied petroleum gas, the change in temperature directly affects the pressure of the gas, and thus affects the safety of the storage tank. If the temperature inside the liquefied petroleum gas storage tank is too high, it may cause gas expansion or other dangers. The temperature data collected by the temperature sensor will be sent to the parameter change rate calculation module. The parameter change rate calculation module can perform differential calculation based on the temperature difference between two time points to obtain the temperature change rate. The calculation formula for the temperature change rate is:

[0044] ,

[0045] Where: For in time The rate of change of the temperature of the LPG tank at the moment, For time The temperature data in the liquefied petroleum gas storage tank collected by the temperature sensor at the moment, For in time Moment before moment The temperature data in the liquefied petroleum gas storage tank collected by the temperature sensor, is the time interval, and satisfy By calculating the temperature change rate, the parameter change rate calculation module can understand the temperature change trend of the storage tank in real time. If the temperature change rate increases abnormally, it may mean that an overheating reaction occurs in the storage tank or the external environment causes the temperature to rise rapidly;

[0046] The liquid level change rate refers to the change rate of the liquid height inside the storage tank. In the liquefied petroleum gas storage tank, the liquid level is an important indicator to measure the volume of the liquid in the storage tank, and the abnormal change of the liquid level is often related to the abnormal pressure or temperature inside the storage tank. The liquid level sensor continuously monitors the liquid level height inside the storage tank and sends the collected data to the parameter change rate calculation module. The parameter change rate calculation module calculates the change rate of the liquid level according to the change of the liquid level through the liquid level change rate calculation formula. The liquid level change rate calculation formula is:

[0047] ,

[0048] Where: For time The rate of change of the liquid level in the LPG tank at the moment, For time The liquid level height in the liquefied petroleum gas storage tank collected by the liquid level sensor at the moment, For in time Moment before moment The liquid level height in the liquefied petroleum gas storage tank collected by the liquid level sensor, is the time interval, and satisfy The calculation of the liquid level change rate can help the parameter change rate calculation module understand the consumption or accumulation of the tank liquid. In the liquefied petroleum gas tank, a low liquid level may mean leakage or excessive evaporation of the tank, while a high liquid level may mean that the liquid is not released in time, causing the internal pressure of the tank to exceed the standard.

[0049] Furthermore, the data processing module establishes a comprehensive evaluation model based on the data collected by the sensor and the calculated pressure change rate, temperature change rate and liquid level change rate, including the following specific contents:

[0050] The data processing module establishes a comprehensive risk assessment model based on the pressure data monitored by the pressure sensor, the temperature data monitored by the temperature sensor, the liquid level data monitored by the liquid level sensor, and the pressure change rate, temperature change rate, and liquid level change rate calculated by the parameter change rate calculation module to provide risk assessment for the liquefied petroleum gas storage tank and ensure the safe operation of the liquefied petroleum gas storage tank. The formula of the comprehensive assessment model is:

[0051] ,

[0052] Where: For time The comprehensive risk assessment value at the moment, For time The pressure data in the liquefied petroleum gas storage tank collected by the pressure sensor at the moment, is the maximum allowable working pressure data of the liquefied petroleum gas storage tank, To adjust The weight in the comprehensive risk assessment value, For time The temperature data in the liquefied petroleum gas storage tank collected by the temperature sensor at the moment, is the maximum safe operating temperature of the liquefied petroleum gas storage tank, To adjust The weight in the comprehensive risk assessment value, For time The liquid level height in the liquefied petroleum gas storage tank collected by the liquid level sensor at the moment, is the maximum permissible liquid level height of the liquefied petroleum gas storage tank, To adjust The weight in the comprehensive risk assessment value, For in time The rate of change of the pressure of the LPG tank at the moment, is the preset safety threshold of the pressure change rate, For in time The rate of change of the temperature of the LPG tank at the moment, is the preset safety threshold of the temperature change rate, For time The rate of change of the liquid level in the LPG tank at the moment, It is the preset safety threshold of liquid level change rate.

[0053] Furthermore, the early warning module analyzes the comprehensive evaluation value calculated by the comprehensive evaluation model and takes early warning measures in time when potential dangers are found, including the following specific contents:

[0054] When the comprehensive evaluation value exceeds the predetermined safety assessment threshold, it indicates that the state of the liquefied petroleum gas storage tank has entered a high-risk area, and the early warning module is activated in time. The various parameters in the comprehensive evaluation model, such as pressure data, temperature data, liquid level change rate and threshold setting, will directly affect the sensitivity and response speed of the early warning trigger. If the pressure change rate is too fast or the temperature data rises sharply, the early warning module can quickly identify that the storage tank may face the risk of overpressure or explosion, and then trigger an early warning. After the early warning is triggered, the early warning module sends out an audible and visual signal alarm.

[0055] In this embodiment, the parameter change rate calculation module is connected to the data acquisition module, the data processing module is connected to the data acquisition module and the parameter change rate calculation module respectively, and the early warning module is connected to the data processing module.

[0056] The data acquisition module of the present invention uses pressure sensors, temperature sensors and liquid level sensors to monitor the key data of the storage tank in real time and accurately. The pressure sensor can judge the pressure anomaly, the temperature sensor can not only detect the temperature anomaly, but also conduct in-depth analysis based on the atmosphere and storage tank temperature relationship model, and the liquid level sensor can monitor the liquid level change. The parameter change rate calculation module calculates the parameter change rate, which can efficiently identify potential risks. The comprehensive evaluation model constructed by the data processing module considers many factors to calculate the risk assessment value. The early warning module can quickly start when the storage tank enters the high-risk area by analyzing the comprehensive evaluation value, and give timely reminders through sound and light signal alarms. The model parameters have an important influence on the early warning sensitivity and response speed, which ensures the safe operation of the liquefied petroleum gas storage tank, effectively overcomes the disadvantage of the single alarm mechanism in the existing technology, and reduces the risk of explosion accidents.

[0057] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

[0058] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A storage tank risk early warning intelligent monitoring system, characterized in that: It includes a data acquisition module, a parameter change rate calculation module, a data processing module and an early warning module; the data processing module collects pressure data, temperature data, liquid level data, pressure change rate, temperature change rate and liquid level change rate of the liquefied petroleum gas storage tank according to the data acquisition module, establishes a comprehensive risk assessment model, and provides risk assessment for the liquefied petroleum gas storage tank. The formula of the comprehensive assessment model is: ， Where: For time The comprehensive risk assessment value at the moment, For time The pressure data in the liquefied petroleum gas storage tank collected by the pressure sensor at all times, is the maximum allowable working pressure data of the liquefied petroleum gas storage tank, To adjust The weight in the comprehensive risk assessment value, For time The temperature data in the liquefied petroleum gas storage tank collected by the temperature sensor at any time, is the maximum safe operating temperature of the liquefied petroleum gas storage tank, To adjust The weight in the comprehensive risk assessment value, For time The liquid level height in the liquefied petroleum gas storage tank collected by the liquid level sensor at the moment, is the maximum permissible liquid level height of the liquefied petroleum gas storage tank, To adjust The weight in the comprehensive risk assessment value, For in time The rate of change of the pressure of the LPG tank at the moment, is the preset safety threshold of the pressure change rate, For in time The rate of change of the temperature of the LPG tank at the moment, is the preset safety threshold of the temperature change rate, For time The rate of change of the liquid level in the LPG tank at the moment, It is the preset safety threshold of liquid level change rate.

2. According to claim 1, a storage tank risk early warning intelligent monitoring system is characterized in that The data acquisition module monitors the pressure data in real time through the pressure sensors installed at the top and bottom of the liquefied petroleum gas storage tank. The pressure sensors are used to measure the pressure of the liquid in the oil storage tank and convert the pressure signal into an electrical signal for processing by the data processing module; the data acquisition module monitors the temperature changes inside the liquefied petroleum gas storage tank in real time through the temperature sensors installed at the bottom and top of the liquefied petroleum gas storage tank, and promptly detects abnormal temperature conditions; the data acquisition module monitors the liquid level changes of the liquid inside the liquefied petroleum gas storage tank in real time through the liquid level sensor. The liquid level sensor provides liquid level data and transmits it to the data processing module through digital signals.

3. The intelligent monitoring system for storage tank risk warning according to claim 2 is characterized in that The temperature inside the liquefied petroleum gas storage tank is related to the atmospheric temperature outside the liquefied petroleum gas storage tank. A relationship model between the atmospheric temperature and the temperature change of the liquefied petroleum gas storage tank is established to describe the influence of the atmospheric temperature change on the temperature change inside the liquefied petroleum gas storage tank. The formula of the relationship model is: ， Where: is the internal temperature of the liquefied petroleum gas storage tank, For time, is the thermal diffusion coefficient, is the heat exchange coefficient, is the external atmospheric temperature of the liquefied petroleum gas storage tank.

4. The intelligent monitoring system for storage tank risk warning according to claim 1 is characterized in that: The parameter change rate calculation module calculates the change rate of each parameter by performing real-time analysis on the pressure data, temperature data and liquid level data collected by the sensor. The pressure change rate refers to the change in the internal pressure of the storage tank per unit time. In the liquefied petroleum gas storage tank, the pressure change rate calculation formula is: ， Where: For in time The rate of change of the pressure of the LPG tank at the moment, For time The pressure data in the liquefied petroleum gas storage tank collected by the pressure sensor at the moment, For in time Moment before moment The pressure value in the liquefied petroleum gas storage tank collected by the pressure sensor, is the time interval, and satisfy ; Through the calculation formula of the pressure change rate, the parameter change rate calculation module can monitor the change trend of the tank pressure in real time.

5. The intelligent monitoring system for storage tank risk warning according to claim 1 is characterized in that: The temperature change rate is the speed at which the temperature inside the storage tank changes. The temperature sensor sends the collected temperature data to the parameter change rate calculation module. The parameter change rate calculation module performs differential calculation based on the temperature difference between two time points to obtain the temperature change rate. The calculation formula of the temperature change rate is: ， Where: For in time The rate of change of the temperature of the LPG tank at the moment, For time The temperature data in the liquefied petroleum gas storage tank collected by the temperature sensor at the moment, For in time Moment before moment The temperature data in the liquefied petroleum gas storage tank collected by the temperature sensor, is the time interval, and satisfy ; By calculating the temperature change rate, the parameter change rate calculation module can understand the temperature change trend of the storage tank in real time.

6. The intelligent monitoring system for storage tank risk warning according to claim 1 is characterized in that: The liquid level change rate is the change rate of the liquid height inside the storage tank. The liquid level sensor continuously monitors the liquid level height inside the storage tank and sends the collected data to the parameter change rate calculation module. The parameter change rate calculation module calculates the change rate of the liquid level according to the change of the liquid level through the liquid level change rate calculation formula. The liquid level change rate calculation formula is: ， Where: For time The rate of change of the liquid level in the LPG tank at the moment, For time The liquid level height in the liquefied petroleum gas storage tank collected by the liquid level sensor at the moment, For in time Moment before moment The liquid level height in the liquefied petroleum gas storage tank collected by the liquid level sensor, is the time interval, and satisfy ; The liquid level change rate calculation formula is used by the parameter change rate calculation module to understand the consumption or accumulation of liquid in the storage tank.

7. The intelligent monitoring system for storage tank risk warning according to claim 1 is characterized in that: The parameter change rate calculation module is connected to the data acquisition module, the data processing module is connected to the data acquisition module and the parameter change rate calculation module respectively, and the early warning module is connected to the data processing module.

8. The intelligent monitoring system for storage tank risk warning according to claim 1 is characterized in that: When the comprehensive risk assessment value exceeds the predetermined safety assessment threshold, it indicates that the state of the liquefied petroleum gas storage tank has entered a high-risk area. The early warning module is activated in time. The various parameters in the comprehensive assessment model will directly affect the sensitivity and response speed of the early warning trigger. If the pressure change rate is too fast or the temperature data rises sharply, the early warning module can quickly identify that the liquefied petroleum gas storage tank is facing the risk of overpressure or explosion, and then trigger an early warning. After the early warning is triggered, the early warning module sends out an audible and visual signal alarm.

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