Safety monitoring methods, systems and equipment for chemical tankers

Abstract

This disclosure provides a safety monitoring method, system, and equipment for chemical tankers, belonging to the field of ship safety. The safety monitoring method for chemical tankers includes: monitoring the actual operational process of the chemical tanker during loading and unloading operations, wherein the actual operational process includes the actual action sequence number and actual opening value of a target valve, and the target valve is a valve that is currently in operation. The actual operational process is compared with the theoretical operational process of the chemical tanker during loading and unloading operations to obtain a first comparison result, wherein the theoretical operational process includes the theoretical action sequence number and theoretical opening value of the target valve. The first comparison result includes at least one of the following: the target valve's operation is incorrect; or the actual opening value of the target valve is incorrect. Based on the first comparison result, an alarm signal is issued. This disclosure, through a chemical tanker safety monitoring system, can assist operators in monitoring operations and improve the safety of chemical tanker operations.

Description

Technical Field

[0001] This disclosure pertains to the field of ship safety, and specifically relates to a safety monitoring method, system, and equipment for chemical tankers. Background Technology

[0002] Chemical tankers are specialized cargo ships used to transport various toxic, flammable, volatile, or corrosive chemicals. During navigation and cargo loading / unloading, safety monitoring of the cargo condition, equipment condition, and operating environment is implemented to reduce the probability of accidents, minimize personal and property losses, and reduce environmental pollution caused by chemical spills, thus ensuring the safe transport of chemicals.

[0003] Currently, the monitoring of the operating environment of chemical tankers mainly relies on manual supervision, which is prone to misjudgments and omissions due to human factors, and places high demands on the supervisors. Summary of the Invention

[0004] This disclosure provides a safety monitoring method, system, and equipment for chemical tankers, which can assist operators in monitoring operations and improve the safety of chemical tanker use. The technical solution is as follows:

[0005] This disclosure provides a safety monitoring system for a chemical tanker, the safety monitoring method including:

[0006] The actual operation process of a chemical tanker during loading and unloading is monitored. This actual operation process includes the actual actuation sequence number and actual opening value of a target valve, where the target valve is the valve currently in operation. The actual operation process is compared with the theoretical operation process of the chemical tanker during loading and unloading to obtain a first comparison result. The theoretical operation process includes the theoretical actuation sequence number and theoretical opening value of the target valve. The first comparison result includes at least one of the following: the target valve's operation is incorrect; the actual opening value of the target valve is incorrect. Based on the first comparison result, an alarm signal is issued.

[0007] In another implementation of this disclosure, the step of comparing the actual operation process with the theoretical operation process of the chemical tanker during loading and unloading operations to obtain a first comparison result includes: obtaining the actual start opening and closing time and the actual end opening and closing time of the target valve according to the actual operation process; determining the actual opening and closing ranking of the target valve that has been activated in the actual operation process based on the actual start opening and closing time and the actual end opening and closing time; if the actual opening and closing ranking is consistent with the theoretical opening and closing ranking in the theoretical operation process, then the actual action sequence number is consistent with the theoretical action sequence number.

[0008] In another implementation of this disclosure, the safety monitoring method further includes: monitoring the loading and unloading status data of the cargo hold during the loading and unloading operation, the loading and unloading status data including at least one of the following physical property values ​​of the actual loading and unloading temperature, loading and unloading pressure, and actual loading and unloading liquid level of the cargo hold at different time periods when the chemical tanker is carrying out loading and unloading operations; comparing the loading and unloading status data with theoretical status data to obtain a second comparison result, the second comparison result including at least one of the following: the actual loading and unloading temperature of the cargo hold does not match the theoretical temperature, the actual loading and unloading pressure of the cargo hold does not match the theoretical pressure, and the actual loading and unloading liquid level of the cargo hold does not match the theoretical liquid level; and issuing an alarm signal based on the second comparison result.

[0009] In yet another implementation of this disclosure, the security monitoring method further includes:

[0010] The system monitors the transport status data of the cargo holds of the chemical tanker during transport. This transport status data includes at least one physical property value among the actual transport temperature, actual transport pressure, and actual transport liquid level of the cargo holds during transport. The transport status data is compared with theoretical status data to obtain a third comparison result. This third comparison result includes at least one of the following: the actual transport temperature of the cargo hold does not match the theoretical temperature; the actual transport pressure of the cargo hold does not match the theoretical pressure; and the actual transport liquid level of the cargo hold does not match the theoretical liquid level. Based on the third comparison result, an alarm signal is issued.

[0011] In another implementation of this disclosure, the safety monitoring method further includes: monitoring the opening value of the valves in the cargo holds of the chemical tanker during transportation; if the chemical tanker is in the process of transportation and the opening value of at least one valve in at least one cargo hold is greater than 0, issuing an alarm signal.

[0012] In another implementation of this disclosure, the safety monitoring method further includes: monitoring the opening values ​​of the injection valve and the outlet valve of the cargo hold during the loading and unloading process of the chemical tanker; if the chemical tanker is in the loading and unloading process and the opening values ​​of the injection valve and the outlet valve of the cargo hold are both greater than 0, an alarm signal is issued.

[0013] In another implementation of this disclosure, the actual operation process also includes the actual operation time corresponding to the loading and unloading operation of the chemical tanker; the safety monitoring method further includes: issuing an alarm signal when the actual operation time exceeds the theoretical operation time and the chemical tanker has not yet completed the loading and unloading operation.

[0014] In another implementation of this disclosure, a safety monitoring system for a chemical tanker is also provided. The system includes: an actual operation process determination module for monitoring the actual operation process of the chemical tanker during loading and unloading operations, wherein the actual operation process includes the actual action sequence number and actual opening value of a target valve, and the target valve is a valve that is currently in operation; a comparison module for comparing the actual operation process with the theoretical operation process of the chemical tanker during loading and unloading operations to obtain a first comparison result, wherein the theoretical operation process includes the theoretical action sequence number and theoretical opening value of the target valve, and the first comparison result includes at least one of the following: the target valve's operation is incorrect; or the actual opening value of the target valve is incorrect; and an alarm signal prompting module for issuing an alarm signal based on the first comparison result.

[0015] In another implementation of this disclosure, the first comparison module is used to compare whether the actual action sequence number of the target valve is the same as the corresponding theoretical action sequence number in the theoretical operation process, and to determine whether the action of the target valve is correct; if the action of the target valve is correct, then compare whether the actual opening value of the target valve is the same as the corresponding theoretical value, and to determine whether the actual opening value of the target valve is correct.

[0016] In another implementation of this disclosure, a computer device is also provided, the computer device including a processor and a memory configured to store processor-executable instructions; the processor is configured to perform the above-described safety monitoring method for chemical tankers.

[0017] In another implementation of this disclosure, a computer storage medium is also provided, on which computer instructions are stored, which, when executed by a processor, implement the above-described safety monitoring method for chemical tankers.

[0018] The beneficial effects of the technical solutions provided in this disclosure are:

[0019] In this embodiment of the disclosure, the safety monitoring method can compare the actual operation process of the chemical tanker during loading and unloading with the theoretical operation process and obtain a first comparison result. Then, based on the first comparison result, an alarm signal is issued. This allows the chemical tanker to issue an alarm signal immediately if there is an error in valve opening or closing or an incorrect opening value during loading and unloading, so as to remind the crew. This avoids misjudgments and omissions that occur when relying on the judgment of the operator in related technologies, thereby improving the safety of the chemical tanker. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a flowchart of a safety monitoring method for chemical tankers provided in an embodiment of this disclosure;

[0022] Figure 2 This is a flowchart of another safety monitoring method for chemical tankers provided in this disclosure embodiment;

[0023] Figure 3 This is a schematic diagram of a module of a safety monitoring system for a chemical tanker provided in an embodiment of this disclosure;

[0024] Figure 4 This is a schematic diagram of the structure of a computer device provided in an embodiment of this disclosure. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this disclosure clearer, the embodiments of this disclosure will be described in further detail below with reference to the accompanying drawings.

[0026] During loading operations, cargo is pumped from shore tankers to the cargo holds of the chemical tanker. The cargo holds are connected to the shore tanks via pipelines, with one end of the pipeline connected to the shore tank and the other end located on the side wall of the cargo hold near the bottom. An inlet valve is installed at the other end of the pipeline; the loading rate can be adjusted by controlling the opening degree of the inlet valve. In other words, when a chemical tanker is loading, it needs to be connected to the shore tanks via pipelines and the opening and closing of the inlet valve must be controlled.

[0027] When a chemical tanker is unloading, the cargo in its holds is pumped to shore tanks using a cargo pump. The cargo pump is located at the bottom of the cargo hold. The cargo pump is connected to the shore tank via an outlet pipeline; one end of the outlet pipeline is connected to the pump's outlet via an outlet valve, and the other end is connected to the shore tank. The unloading speed can be directly adjusted by controlling the opening of the outlet valve or the pump's rotational speed. In other words, when a chemical tanker is unloading, it needs to connect to the shore tank via the outlet pipeline, start the cargo pump, and control the opening and closing of the outlet valve.

[0028] The cargo pumps mentioned above include tank washing pumps and ballast pumps. The outlet valves and inlet valves mentioned above are the valves of the cargo holds, as described below. Each cargo hold has one outlet valve and one inlet valve.

[0029] This disclosure provides a safety monitoring method for chemical tankers, which can be executed by computer equipment. Figure 1 As shown, the security monitoring method includes:

[0030] S101: Monitor the actual operation process of chemical tankers during loading and unloading operations. The actual operation process includes the actual action sequence number and actual opening value of the target valve. The target valve is the valve that is currently in operation.

[0031] S102: Compare the actual operation process with the theoretical operation process of the chemical tanker during loading and unloading operations to obtain the first comparison result. The theoretical operation process includes the theoretical action sequence number and theoretical opening value of the target valve. The first comparison result includes at least one of the following: the action of the target valve is incorrect, or the actual opening value of the target valve is incorrect.

[0032] S103: Based on the first comparison result, issue an alarm signal.

[0033] In this embodiment of the disclosure, the safety monitoring method can compare the actual operation process of the chemical tanker during loading and unloading with the theoretical operation process and obtain a first comparison result. Then, based on the first comparison result, an alarm signal is issued. This allows the chemical tanker to issue an alarm signal immediately if there is an error in valve opening or closing or an incorrect opening value during loading and unloading, so as to remind the crew. This avoids misjudgments and omissions that occur when relying on the judgment of the operator in related technologies, thereby improving the safety of the chemical tanker.

[0034] Figure 2 Another method for safety monitoring of chemical tankers provided in the embodiments of this disclosure, such as Figure 2 As shown, the security monitoring methods include:

[0035] S201: Monitor the actual operational procedures of chemical tankers during loading and unloading operations.

[0036] The actual operating procedure includes the actual actuation sequence number and actual opening value of the target valve. The target valve is the valve that is currently actuating. The valves referred to here are the inlet or outlet valves of each cargo hold.

[0037] In this embodiment, one cargo hold corresponds to one inlet valve and one outlet valve.

[0038] The actual action sequence number is used to indicate the order in which the target valve opens and closes. The opening and closing actions include the opening action and the closing action.

[0039] For example, the connection signal of the ESDS (emergency shut-down system) can be collected to determine whether a chemical tanker is in the process of loading or unloading.

[0040] If no connection signal is detected from the ESDS, it means that the chemical tanker is not carrying out loading or unloading tasks, i.e., the chemical tanker is not in the process of loading or unloading.

[0041] For example, S201 includes:

[0042] The first step is to collect the opening information of each valve at set time intervals to obtain the opening information set of each valve. This opening information set includes multiple combinations, and each combination includes the opening value and the corresponding sampling time.

[0043] The time interval can be set according to the minimum interval of continuous operation of each valve. Generally, the time interval is less than the minimum interval of continuous operation of any valve.

[0044] For example, a time interval of 10 seconds can be selected, and the collected opening information can be combined and displayed in the table below.

[0045] Table 1. Set of Opening Information

[0046]

[0047] The second step is to determine the action time of the target valve based on the opening indication information in N consecutive combinations.

[0048] If the difference between the opening values ​​of two consecutive combinations of valves is greater than 0, and one of the two consecutive combinations has an opening value of 0, the sampling time corresponding to the non-zero opening value is taken as the action time of the target valve.

[0049] In this scenario, for two consecutive combinations, the opening value before the sampling time is 0, and the opening value after the sampling time is non-zero. The sampling time corresponding to the non-zero opening value is taken as the target valve opening time. Similarly, the target valve closing action time is exactly the opposite.

[0050] Referring to Table 1, the valve remote control system detected an opening value of 0 for the inlet valve of cargo hold 1 at 1:00, and detected an opening value of 50% of the maximum opening value for the inlet valve of cargo hold 1 at both 1:10 and 1:20. At 1:30, the opening value of the inlet valve of cargo hold 1 was also detected as 0. Therefore, it can be determined that the opening action time of the inlet valve of cargo hold 1 is 1:10, and the closing action time is 1:20. All other valves showed no action.

[0051] Furthermore, since the valve opening degree is positively linearly related to the valve's input current (or input voltage), the larger the corresponding electrical signal value, the larger the valve opening degree. Therefore, the valve opening degree can be determined based on the valve's input current (or input voltage). For example, an output current (or output voltage) value of 0 indicates that the valve is closed; an output current (or output voltage) value at its maximum value indicates that the valve is fully open; and an output current (or output voltage) value between 0 and its maximum value indicates that the valve is open.

[0052] In this embodiment, the valve opening values ​​of each valve on the chemical tanker are collected during loading and unloading operations through a valve remote control system.

[0053] The valves in the cargo hold are generally solenoid valves. After the valve in the cargo hold is opened, the valve remote control system can immediately collect the valve's electrical signal (including input current value or input voltage value, etc.), and after processing the acquired electrical signal, it forms an opening information set with the corresponding acquisition time and stores it in the PLC controller.

[0054] For example, the valve remote control system is configured with an IP address, and the information collected by the valve remote control system is transmitted to the PLC controller through a switch.

[0055] The third step is to determine the action sequence number of the target valve based on its action time.

[0056] The actions of the target valve can be numbered according to the sampling time corresponding to the action of the target valve, so as to obtain the action sequence number of the target valve.

[0057] For example, referring to Table 1, when the inlet valve of cargo hold 1 is open, this opening action can be numbered as sequence number 1, that is, the opening action of valve 1 is sequence number 1. When the inlet valve of cargo hold 1 is closed, the corresponding closing action is numbered as sequence number 2, that is, the closing action of valve 1 is sequence number 2.

[0058] S202: Compare the actual operation process with the theoretical operation process of chemical tankers during loading and unloading operations to obtain the first comparison result.

[0059] The theoretical operating procedure includes the theoretical action sequence number and theoretical opening value of the target valve. The first comparison result includes at least one of the following: the target valve's action is incorrect, or the actual opening value of the target valve is incorrect.

[0060] For example, S202 includes:

[0061] 2021: Compare the actual action sequence number of the target valve with the corresponding theoretical action sequence number in the theoretical operation process to determine whether the action of the target valve is correct.

[0062] For example, if the actual action sequence number of the target valve is the same as the corresponding theoretical action sequence number in the theoretical operation process, then the action of the target valve is correct.

[0063] If the actual action sequence number of the target valve is the same as the corresponding theoretical action sequence number in the theoretical operation process, then the action of the target valve is incorrect.

[0064] 2022: If the target valve operates correctly, compare the actual opening value of the target valve with the corresponding theoretical value to determine whether the actual opening value of the target valve is correct.

[0065] If the target valve operates correctly, the actual opening value of the target valve is compared with its theoretical opening value. If the actual opening value is the same as the theoretical opening value, the actual opening value is correct. If the actual opening value is different from the theoretical opening value, the actual opening value is incorrect.

[0066] For example, during this loading operation, a chemical tanker needs to load cargo into cargo holds 1, 2, and 3. The theoretical operational procedure can be set according to the loading task as follows: First, open the inlet valve of cargo hold 2, ensuring it remains at 80% of its maximum opening, then close the inlet valve. Next, open the inlet valve of cargo hold 3, ensuring it remains at 60% of its maximum opening, then close the inlet valve.

[0067] Based on the opening information collected in Table 1, when the opening value of the No. 2 cargo hold inlet valve is collected at 1:10 as 50% of the maximum opening, the actual action sequence number of the closing action of the No. 2 cargo hold inlet valve can be assigned as 1. The theoretical action sequence number of the opening action of the No. 2 cargo hold inlet valve is also 1, indicating that they are consistent, meaning the opening action of the No. 2 cargo hold inlet valve is correct. Next, the opening value of the No. 2 cargo hold inlet valve is compared. The actual opening value is 50% of the maximum opening value, while the theoretical opening value is 80% of the maximum opening value. These two are different, indicating that the opening value of the No. 2 cargo hold inlet valve is incorrect. At this point, the first comparison result will be output, and an alarm message will be issued.

[0068] If the alarm is cleared, continue collecting the opening information of each valve. When the opening value of the No. 2 cargo hold inlet valve is collected as 0 at 1:30, the actual action sequence number of the closing action of the No. 2 cargo hold inlet valve is assigned as 2. The theoretical action sequence number of the closing action of the No. 2 cargo hold inlet valve is also 2, indicating that the two are consistent, that is, the closing action of the No. 2 cargo hold inlet valve is correct. Since the other valves have no action, there is no need to output the first comparison result, and naturally, no more alarm information will be issued.

[0069] S203: Based on the first comparison result, issue an alarm signal.

[0070] When the first comparison result is obtained, it indicates that there is an abnormality during the loading and unloading operation of the chemical tanker. At this time, an alarm signal needs to be issued to the crew to remind them to stop the operation and to inspect the cargo hold.

[0071] In this embodiment, in addition to determining that the cargo hold of a chemical tanker is abnormal during loading and unloading operations based on the first comparison result, an alarm signal also needs to be issued when the inlet valve and outlet valve of the same cargo hold are opened or closed at the same time, which is to determine that the cargo hold is abnormal.

[0072] S204: Monitor the loading and unloading status data of the cargo hold during loading and unloading operations.

[0073] The loading and unloading status data includes at least one of the following physical properties of the cargo hold at different times during loading and unloading operations of a chemical tanker: actual loading and unloading temperature, actual loading and unloading pressure, and actual loading and unloading liquid level.

[0074] In this embodiment, the cargo hold loading and unloading status data includes at least one of the following data during the loading and unloading operation of the chemical tanker: actual loading and unloading temperature, actual loading and unloading pressure, actual loading and unloading liquid level, etc.

[0075] Cargo hold loading and unloading status data is obtained through a liquid level telemetry system. The liquid level telemetry system can collect the actual loading and unloading temperature, actual loading and unloading pressure, and actual loading and unloading liquid level of the cargo hold in real time, and can transmit the collected data to the PLC controller.

[0076] The data interface of the liquid level telemetry system is configured with an IP address, and data is transmitted to the PLC controller through a switch.

[0077] S205: Compare the loading / unloading status data with the theoretical status data to obtain a second comparison result. In this embodiment, the theoretical status data includes at least one of the theoretical temperature, theoretical pressure, and theoretical liquid level of the cargo hold during the transportation and loading / unloading operations of the chemical tanker.

[0078] The second comparison result includes at least one of the following: the actual loading and unloading temperature of the cargo hold does not match the theoretical temperature, the actual loading and unloading pressure of the cargo hold does not match the theoretical pressure, and the actual loading and unloading liquid level of the cargo hold does not match the theoretical liquid level.

[0079] Theoretical state data can be preset based on the physical properties of different goods loaded in the cargo hold. Physical property data includes the melting point, boiling point, critical temperature, polymerization temperature, etc. of the goods.

[0080] In this embodiment, the physical property data of different cargoes can be obtained from the cargo information security sheet. Generally, before transporting chemical tankers, the cargo information security sheet (including the corresponding melting point, boiling point, critical temperature, polymerization temperature, etc.) is given to the crew in advance. The crew can then input the corresponding data into the PLC controller for storage. Then, the theoretical state data can be set based on the above information.

[0081] For example, the theoretical temperature may include multiple set thresholds, including a high-high threshold, a high-low threshold, and a low-low threshold. The high-high threshold is the maximum theoretical temperature, i.e., the maximum temperature the cargo hold can withstand. The low-low threshold is the critical alarm threshold for the theoretical temperature, i.e., there is a safety hazard if the cargo hold exceeds this temperature. The high-low threshold is a value between the high-high threshold and the low-low threshold.

[0082] Correspondingly, theoretical pressure and theoretical liquid level can also include multiple set thresholds. This will not be elaborated further here.

[0083] For example, if the cargo in the hold is styrene, then based on the fact that the controlled polymerization temperature of styrene is 29°C, the theoretical high-high threshold of the cargo hold can be set to 29°C, and the low-low threshold can be set to 80% * 29 = 23.2. The total high and low thresholds can then be set to 90% * 29 = 26.1.

[0084] S206: Based on the second comparison result, issue an alarm signal.

[0085] If, during loading and unloading operations, at least one of the following parameters of a chemical tanker's cargo hold—such as temperature, pressure, or liquid level—does not match the corresponding theoretical data, it indicates an abnormality in the cargo hold. In this case, an alarm signal will be issued to alert the crew of the abnormality.

[0086] In this embodiment, the mismatch mentioned above generally refers to the loading / unloading status data being higher or lower than the theoretical status data.

[0087] For example, if the cargo in the hold is styrene, the theoretical high-high threshold for the hold's temperature is set at 29°C, and the low-low threshold is set at 80% * 29 = 23.2°C. Of course, if the actual temperature in the hold is detected to be higher than 23.2°C, an alarm signal will be issued.

[0088] For example, alarm signals can be categorized according to theoretical state data settings and the severity of cargo hold anomalies. For instance, alarm signals may include Level 1, Level 2, and Level 3 alarm signals. Level 1 alarm signals are alarms requiring immediate attention. Level 2 alarm signals are alarms requiring further action. Level 3 alarm signals are alarms indicating potential safety hazards.

[0089] In this embodiment, the situations in which the cargo hold issues a Level 1 alarm signal include: when the chemical tanker is in the process of loading and unloading, if the collected data on the loading and unloading status of the cargo hold is higher than the high threshold set in the theoretical status data of the cargo hold, or if the actual action sequence number of the valve is inconsistent with the theoretical action sequence number of the valve.

[0090] The following situations trigger a Level 2 alarm signal: when a chemical tanker is in the process of loading and unloading, if the collected data on the loading and unloading status of the cargo hold is higher than the high and low thresholds set in the theoretical status data of the cargo hold.

[0091] The three-level alarm signal is issued when a chemical tanker is in the process of loading and unloading, and the collected data on the loading and unloading status of the cargo hold is higher than the low threshold set in the theoretical status data of the cargo hold.

[0092] By setting the above scenarios as different types of alarm signals, the crew can be reminded to control the cargo hold according to different emergency situations, effectively addressing abnormal situations in the cargo hold in sequence.

[0093] S207: An alarm signal is issued when the actual operation time exceeds the theoretical operation time and the chemical tanker has not yet completed the loading and unloading operation.

[0094] The theoretical work duration can be preset according to the work plan.

[0095] The actual operation time is the time interval between the start and end times of the operation. The start time is the sampling time corresponding to the first actual action sequence of the target valve, and the end time is the sampling time corresponding to the last actual action sequence of the target valve. If the loading and unloading operation has not been completed within the theoretical operation time, it indicates that the cargo hold loading and unloading operation has exceeded the time limit, and the crew needs to be reminded to speed up the loading and unloading.

[0096] S208: Monitor the transport status data of cargo holds during the transport of chemical tankers. The transport status data includes at least one of the following physical properties of the cargo holds during the transport process: actual transport temperature, actual transport pressure, and actual transport liquid level.

[0097] To determine whether any abnormalities have occurred during the transport of chemical tankers, it is also necessary to monitor the transport status data of the cargo holds during the transport process.

[0098] The method for obtaining cargo hold transport status data is the same as that for obtaining cargo hold loading and unloading status data.

[0099] S209: Compare the transport status data with the theoretical status data to obtain a third comparison result. The third comparison result includes at least one of the following: the actual transport temperature of the cargo hold does not match the theoretical temperature, the actual transport pressure of the cargo hold does not match the theoretical pressure, and the actual transport liquid level of the cargo hold does not match the theoretical liquid level.

[0100] The comparison between transportation status data and theoretical status data is similar to step S205, and will not be repeated here.

[0101] S210: Based on the third comparison result, issue an alarm signal.

[0102] Similarly, if, during the transport of a chemical tanker, at least one of the following parameters—temperature, pressure, or liquid level—is inconsistent with the corresponding theoretical data, it indicates an abnormality in the cargo hold. In this case, an alarm signal will be issued to alert the crew of the abnormality.

[0103] Alarm signals can also be classified according to the type set in step S206, including three types.

[0104] The situations in which a Level 1 alarm signal is issued also include: when a chemical tanker is in the process of transportation, if the collected transportation status data of the cargo hold is higher than the high threshold set in the theoretical status data of the cargo hold.

[0105] The situations in which a Level 2 alarm signal is issued also include: when a chemical tanker is in the process of transportation, if the collected transportation status data of the cargo hold is higher than the high and low thresholds set in the theoretical status data of the cargo hold.

[0106] The three-level alarm signal is issued when the chemical tanker is in the process of transportation and the collected transportation status data of the cargo hold is higher than the low threshold set in the theoretical status data of the cargo hold.

[0107] This disclosure also provides a safety monitoring system for chemical tankers, such as... Figure 3 As shown, the safety monitoring system includes: an actual work process determination module 301, a comparison module 302, and an alarm signal prompting module 303.

[0108] The actual operation process determination module 301 is used to monitor the actual operation process of the chemical tanker during loading and unloading operations. The actual operation process includes the actual action sequence number and actual opening value of the target valve, which is the valve that is currently in operation. The first comparison module 302 is used to compare the actual operation process with the theoretical operation process of the chemical tanker during loading and unloading operations to obtain a first comparison result. The theoretical operation process includes the theoretical action sequence number and theoretical opening value of the target valve. The first comparison result includes at least one of the following: the target valve's operation is incorrect; or the target valve's actual opening value is incorrect. The alarm signal prompting module 303 is used to issue an alarm signal based on the first comparison result.

[0109] The above security monitoring systems have the same beneficial effects as the methods described above, and will not be elaborated further here.

[0110] Optionally, the first comparison module 302 is used to compare whether the actual action sequence number of the target valve is the same as the corresponding theoretical action sequence number in the theoretical operation process, and to determine whether the action of the target valve is correct; if the action of the target valve is correct, it compares whether the actual opening value of the target valve is the same as the corresponding theoretical value, and to determine whether the opening value of the target valve is correct.

[0111] Optionally, the second comparison module 304 is used to monitor the loading and unloading status data of the cargo hold during the loading and unloading operation. The loading and unloading status data includes at least one physical property value of the actual loading and unloading temperature, loading and unloading pressure, and actual loading and unloading liquid level of the cargo hold at different time periods when the chemical tanker is carrying out loading and unloading operations. The loading and unloading status data is compared with the theoretical status data to obtain a second comparison result. The second comparison result includes at least one of the following: the actual loading and unloading temperature of the cargo hold does not match the theoretical temperature, the actual loading and unloading pressure of the cargo hold does not match the theoretical pressure, and the actual loading and unloading liquid level of the cargo hold does not match the theoretical liquid level. An alarm signal is issued based on the second comparison result.

[0112] Optionally, the third comparison module 305 is used to monitor the transportation status data of the cargo hold during the transportation of the chemical tanker. The transportation status data includes at least one of the following physical property values: actual transportation temperature, actual transportation pressure, and actual transportation liquid level, when the chemical tanker is in the transportation process. The transportation status data is compared with the theoretical status data to obtain a third comparison result. The third comparison result includes at least one of the following: the actual transportation temperature of the cargo hold does not match the theoretical temperature, the actual transportation pressure of the cargo hold does not match the theoretical pressure, and the actual transportation liquid level of the cargo hold does not match the theoretical liquid level. Based on the third comparison result, an alarm signal is issued.

[0113] Optionally, the alarm signal prompting module 303 is used to monitor the opening degree of the valves in the cargo holds of the chemical tanker during transportation; if the chemical tanker is in the process of transportation and the opening degree of at least one valve in at least one cargo hold is greater than 0, an alarm signal is issued.

[0114] Optionally, the alarm signal prompting module 303 is used to monitor the opening degree of the injection valve and outlet valve of the cargo hold during the loading and unloading process of the chemical tanker; if the chemical tanker is in the loading and unloading process and the opening degree of the injection valve and outlet valve of the cargo hold is greater than 0, an alarm signal is issued.

[0115] Optionally, the alarm signal prompting module 303 is used to issue an alarm signal when the actual operation time exceeds the theoretical operation time and the chemical tanker has not yet completed the loading and unloading operation.

[0116] Figure 4 This is a schematic diagram of the structure of a computer device provided in an embodiment of this disclosure, combined with... Figure 4 The computer device 400 may include one or more of the following components: processor 401, memory 402, communication interface 403, and bus 404.

[0117] The processor 401 includes one or more processing cores. The processor 401 executes various functional applications and information processing by running software programs and modules. The memory 402 and the communication interface 403 are connected to the processor 401 via a bus 404. The memory 402 can be used to store at least one instruction, which the processor 401 uses to execute to implement the various steps in the above method.

[0118] Furthermore, memory 402 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, including but not limited to: magnetic disks or optical disks, electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), static random access memory (SRAM), read-only memory (ROM), magnetic storage, flash memory, and programmable read-only memory (PROM).

[0119] This disclosure also provides a non-transitory computer-readable storage medium, which, when the instructions in the storage medium are executed by the processor of a computer device, enables the computer device to perform the above-described method for determining the reliability of electromechanical equipment provided in this application.

[0120] A computer program product containing instructions, when run on a computer, causes the computer to execute the reliability determination method for electromechanical equipment provided in the embodiments of this application.

[0121] The above are merely optional embodiments of this disclosure and are not intended to limit this disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the protection scope of this disclosure.

Claims

1. A safety monitoring method for chemical tankers, characterized in that, The chemical tanker includes at least one cargo hold, and each cargo hold is equipped with an inlet valve for introducing liquid cargo into the cargo hold and an outlet valve for discharging the liquid cargo from the cargo hold. The safety monitoring method includes: The opening information of the inlet valve and outlet valve in each of the cargo holds is collected at the same time intervals to obtain the opening information set of each valve. The opening information set includes multiple combinations, and each combination includes the opening value and the corresponding sampling time. When the difference between the opening values ​​of two consecutive combinations of the target valve is greater than 0, and one of the two consecutive combinations has an opening value of 0, the sampling time corresponding to the non-zero opening value is set as the action time of the target valve. The action sequence number of the target valve is determined based on the action time of the target valve; Based on the action sequence number and the opening information set, the actual operation process of the chemical tanker during loading and unloading is obtained. The actual operation process includes the actual action sequence number and actual opening value of the target valve, where the target valve is the valve that is currently in operation. The actual operation process is compared with the theoretical operation process of the chemical tanker during loading and unloading operations to obtain a first comparison result. The theoretical operation process includes the theoretical action sequence number and theoretical opening value of the target valve. The first comparison result includes at least one of the following: the action sequence number of the target valve is incorrect, or the actual opening value of the target valve is incorrect. An alarm signal is issued based on the first comparison result.

2. The security monitoring method according to claim 1, characterized in that, The step of comparing the actual operation process with the theoretical operation process of the chemical tanker during loading and unloading operations to obtain a first comparison result includes: Compare the actual action sequence number of the target valve with the corresponding theoretical action sequence number in the theoretical operation process to determine whether the action of the target valve is correct. If the target valve operates correctly, compare the actual opening value of the target valve with the corresponding theoretical value to determine whether the actual opening value of the target valve is correct.

3. The security monitoring method according to claim 1 or 2, characterized in that, The security monitoring method also includes: The loading and unloading status data of the cargo hold during the loading and unloading operation includes at least one physical property value of the actual loading and unloading temperature, loading and unloading pressure, and actual loading and unloading liquid level of the cargo hold at different time periods when the chemical tanker is carrying out loading and unloading operations. The loading and unloading status data is compared with the theoretical status data to obtain a second comparison result. The second comparison result includes at least one of the following: the actual loading and unloading temperature of the cargo hold does not match the theoretical temperature, the actual loading and unloading pressure of the cargo hold does not match the theoretical pressure, and the actual loading and unloading liquid level of the cargo hold does not match the theoretical liquid level. An alarm signal is issued based on the second comparison result.

4. The security monitoring method according to claim 1 or 2, characterized in that, The security monitoring method also includes: The transport status data of the cargo hold of the chemical tanker during the transport process includes at least one of the following physical property values: actual transport temperature, actual transport pressure, and actual transport liquid level of the cargo hold when the chemical tanker is in the transport process. The transportation status data is compared with the theoretical status data to obtain a third comparison result, which includes at least one of the following: the actual transportation temperature of the cargo hold does not match the theoretical temperature, the actual transportation pressure of the cargo hold does not match the theoretical pressure, and the actual transportation liquid level of the cargo hold does not match the theoretical liquid level. An alarm signal is issued based on the third comparison result.

5. The security monitoring method according to claim 1 or 2, characterized in that, The security monitoring method also includes: Monitor the opening degree of the valves in the cargo holds of the chemical tanker during transportation; An alarm signal is issued when the opening value of at least one valve in at least one of the cargo compartments is greater than 0. Alternatively, the security monitoring method may further include: Monitor the opening degree of the injection valve and outlet valve of the cargo hold during the loading and unloading process of the chemical tanker; An alarm signal is issued when the opening values ​​of both the injection valve and the outlet valve of the cargo hold are greater than 0.

6. The security monitoring method according to claim 1 or 2, characterized in that, The actual operation process also includes the actual operation time corresponding to the loading and unloading operations of the chemical tanker; The security monitoring method also includes: An alarm signal is issued when the actual operation time exceeds the theoretical operation time and the chemical tanker has not yet completed the loading and unloading operation.

7. A safety monitoring system for a chemical tanker, characterized in that, The chemical tanker includes at least one cargo hold, and each cargo hold is equipped with an inlet valve for introducing liquid cargo into the cargo hold and an outlet valve for discharging the liquid cargo from the cargo hold. The safety monitoring system includes: The actual operation process determination module is used to collect the opening information of the inlet valves and outlet valves in each of the cargo holds at equal time intervals to obtain the opening information set of each valve. The opening information set includes multiple combinations, and each combination includes an opening value and a corresponding sampling time. When the difference between the opening values ​​of two consecutive combinations of the target valve is greater than 0, and one of the two consecutive combinations has an opening value of 0, the sampling time corresponding to the non-zero opening value is set as the action time of the target valve. Based on the action time of the target valve, the action sequence number of the target valve is determined. Based on the action sequence number and the opening information set, the actual operation process of the chemical tanker during loading and unloading operations is obtained. The actual operation process includes the actual action sequence number and actual opening value of the target valve, and the target valve is the valve that is currently in operation. The first comparison module is used to compare the actual operation process with the theoretical operation process of the chemical tanker during loading and unloading operations to obtain a first comparison result. The theoretical operation process includes the theoretical action sequence number and theoretical opening value of the target valve. The first comparison result includes at least one of the following: the action sequence number of the target valve is incorrect, or the actual opening value of the target valve is incorrect. An alarm signal prompting module is used to issue an alarm signal based on the first comparison result.

8. The security monitoring system according to claim 7, characterized in that, The first comparison module is used to compare whether the actual action sequence number of the target valve is the same as the corresponding theoretical action sequence number in the theoretical operation process, and to determine whether the action of the target valve is correct. If the target valve operates correctly, compare the actual opening value of the target valve with the corresponding theoretical value to determine whether the actual opening value of the target valve is correct.

9. A computer device, characterized in that, The computer device includes a processor and a memory configured to store executable instructions of the processor; the processor is configured to perform the safety monitoring method for chemical tankers according to any one of claims 1 to 6.

10. A computer storage medium storing computer instructions thereon, characterized in that, When the computer instructions are executed by the processor, they implement the safety monitoring method for chemical tankers according to any one of claims 1 to 6.

Images