A multifunctional integrated ship LNG filling device

Abstract

The present invention discloses a multifunctional integrated ship LNG filling device, including a frame and connecting pipelines, and also includes integrated in the frame: a pressurization system: by partially gasifying the liquid in the tank truck and returning it to the tank truck, the tank truck is self-pressurized; a gasification system: converting the liquid stored in the tank truck into gas and transporting it to the ship storage tank; an auxiliary heating system: increasing the temperature of the liquid after gasification; a pipeline system: cooperating with the liquid in the tank truck to pass into the ship storage tank. In the present invention, firstly, by integrating and integrating the inerting process, the replacement process and the unloading process, the filling equipment meets the effect of good mobility and low cost. Secondly, the ship storage tank is protected by gradually reducing the temperature. When the temperature conditions in the ship storage tank meet the standards, the liquid in the tank truck can be directly transported to the ship storage tank through the connecting pipeline, so as to improve the filling efficiency of the ship LNG while ensuring safety.

Description

Technical Field

[0001] The present invention relates to the technical field of LNG filling, and in particular to a multifunctional integrated ship LNG filling device. Background Art

[0002] With the rapid development of global trade and shipping, ship emissions have become one of the important sources of air pollution in shipping routes and port cities. LNG, as a ship fuel, has become the most practical way to reduce carbon emissions and costs due to its green and economic advantages. The domestic and foreign LNG ship bunkering industry has emerged as the times require. After several years of exploration and development, it has now become a booming industry.

[0003] In the existing technology, LNG ship refueling modes can be divided into three categories: tank truck refueling, shore-based refueling and refueling ship refueling.

[0004] Tank truck refueling refers to the LNG tank truck providing LNG fuel refueling services to the receiving ship at a specific terminal. The tank truck is refueled at the LNG receiving station and the LNG fuel is transported to the destination terminal for refueling of LNG-powered ships. This refueling method needs to be carried out at a specific terminal.

[0005] Shore-based bunkering refers to the construction of a ship bunkering station at a shore-based terminal to provide LNG fuel bunkering services to the receiving ships. Small LNG storage tanks are arranged at the terminal and hoses are used to carry out bunkering operations. This type of bunkering requires the construction of a special bunkering station at the terminal.

[0006] Bunkering by bunkering ship refers to the use of bunkering ships to provide LNG fuel bunkering services to receiving ships at loading and unloading terminals or anchorages. This type of bunkering requires a special bunkering ship.

[0007] The first two modes have the problem of insufficient maneuverability and require the bunkering ships to go to fixed locations for refueling. Although the third refueling mode is highly maneuverable, the bunkering ships are expensive and require large investments.

[0008] Based on this situation, the market is in urgent need of a refueling equipment with good mobility and low investment; however, the current refueling device has a certain room for optimization in terms of intelligent control. The existing refueling device lacks a comprehensive and real-time monitoring system and cannot accurately and continuously monitor the key links in the refueling process, such as the flow, pressure, temperature and other parameters of the fuel. Potential problems in the refueling process may not be detected in time, affecting the safety and efficiency of refueling. Therefore, a multifunctional integrated ship LNG refueling device is provided. Summary of the invention

[0009] The purpose of the present invention is to propose a multifunctional integrated ship LNG filling device in order to solve the above problems.

[0010] In order to achieve the above-mentioned object, the present invention adopts the following technical solution: a multifunctional integrated ship LNG filling device, including a frame and connecting pipelines, and also including:

[0011] Pressurization system: The tank truck is self-pressurized by partially vaporizing the liquid in the tank truck and returning it to the tank truck;

[0012] Gasification system: converts the liquid stored in the tank truck into gas and transports it to the ship's storage tank;

[0013] Auxiliary heating system: to increase the temperature of the liquid after vaporization;

[0014] Pipeline system: to connect the liquid in the tank truck to the ship's storage tank;

[0015] Control management platform, including real-time monitoring module, safety diagnosis module, environmental analysis module, adaptive analysis module and control module;

[0016] The real-time monitoring module is used to monitor the real-time monitoring data, environmental information and status information of each part of the device;

[0017] The environmental analysis module is used to analyze the environmental information of each part of the device and obtain the environmental impact value corresponding to the part;

[0018] The adaptive analysis module is used to analyze the real-time monitoring data of each part to obtain the deviation impact value corresponding to the parameter in the real-time monitoring data; set the deviation threshold corresponding to the parameter. If the deviation impact value is greater than the deviation threshold, it means that the value of the parameter deviates from the expected value of the parameter, and an adaptive adjustment signaling is generated;

[0019] The deviation influence values ​​of all parameters in the real-time monitoring data corresponding to the part are weighted to obtain the control value corresponding to the part; the control value corresponding to the part is processed with the environmental influence value to obtain the adaptive control coefficient;

[0020] The safety diagnosis module is used to diagnose and analyze the status information corresponding to the parts to obtain the daily status abnormal value; set the daily status deviation threshold. If the daily status abnormal value is greater than the daily status deviation threshold, it indicates that the status of the component in the monitoring time zone is abnormal or deviates from expectations, and generate a daily status abnormal signal. The daily status abnormal value, status parameter abnormal value, status parameter difference, status parameter mean, status parameter fluctuation value and daily monitoring time zone corresponding to the daily status abnormal signal are marked as daily diagnosis results; set the recent monitoring time zone, and perform mean and standard deviation analysis on the daily status abnormal values ​​of all daily monitoring time zones in the recent monitoring time zone. Calculate and obtain the recent state abnormal mean value and the recent state abnormal trend value; perform weighted processing on the daily state abnormal value, the recent state abnormal mean value and the recent state abnormal trend value to obtain the recent state impact value; mark the daily state abnormal value, the recent state abnormal mean value and the recent state abnormal trend value as the recent diagnosis result; perform weighted processing on the recent state impact values ​​of all parts in the filling device to obtain the recent comprehensive abnormal value; set the state signaling range group, including the value range of the safe state, abnormal state and dangerous state signaling; match the recent comprehensive abnormal value with the state signaling range group to obtain the corresponding state signaling;

[0021] The control module is used to receive corresponding signaling to perform corresponding operations, specifically:

[0022] When receiving the adaptive adjustment signaling, real-time adjustment is performed according to the adaptive adjustment coefficient corresponding to the part;

[0023] When receiving the daily status abnormal signaling, the daily diagnosis result is sent to the maintenance personnel corresponding to the component.

[0024] Preferably, the boosting system is a booster, the gasification system is a gasifier, and the auxiliary heating system is a recuperator.

[0025] Preferably, the boosting system is a booster, the gasification system is a gasifier, and the auxiliary heating system is a recuperator.

[0026] Preferably, the pipeline system comprises:

[0027] Pressurized liquid phase pipeline: the supercharger is connected to the tank truck pressurized liquid phase interface through a connecting pipeline for the tank truck liquid to flow in;

[0028] Liquid phase pipeline: The vaporizer is connected to a tank truck liquid phase interface through a connecting pipeline for liquid inflow from a tank truck, the vaporizer is connected to a reheater through a connecting pipeline, the reheater is connected to a liquid outlet through a connecting pipeline for gas and liquid injection from a ship storage tank, and a connecting pipeline is connected between the liquid outlet and the tank truck liquid phase interface for directly transporting liquid from the tank truck to the ship storage tank;

[0029] Supercharged gas phase pipeline: the supercharger is connected to the gas phase interface of the tank truck through a connecting pipeline;

[0030] Divergence pipeline: the pressurized liquid phase pipeline, liquid phase pipeline and pressurized gas phase pipeline are all connected with a divergence pipeline for pressure relief;

[0031] Spare pipeline: The vaporizer is connected to a spare vaporizer interface through a connecting pipeline for use in parallel with another vaporizer.

[0032] Preferably, valves for controlling the opening and closing of the channels are provided in the connecting pipeline and the diverging pipeline, and a nitrogen bottle group connected to the liquid outlet through the connecting pipeline is also integrated in the frame.

[0033] Analyze the environmental information of each part of the device, specifically:

[0034] Set the expected value corresponding to any environmental parameter in the environmental information corresponding to the part, calculate the difference between the environmental parameter in the environmental information and the expected value corresponding to the environmental parameter, and obtain the expected difference value of the environmental parameter;

[0035] Set the environment change time zone, calculate the mean and standard deviation of the expected difference of the environmental parameters within the environment change time zone, and obtain the environmental mean and environmental parameter fluctuation value;

[0036] Perform weighted calculation on the expected difference value of environmental parameters, the average value of environmental parameters, and the fluctuation value of environmental parameters to obtain the environmental parameter impact value corresponding to the environmental parameters in the environmental information;

[0037] The environmental impact value is obtained by weighting the environmental impact values ​​of all environmental parameters in the environmental information.

[0038] Preferably, the real-time monitoring data of each part is analyzed, specifically:

[0039] Set the standard value of any parameter in the real-time monitoring data corresponding to the part, calculate the difference between the numerical value of any parameter in the real-time monitoring data and the standard value corresponding to the parameter, and obtain the data difference; set the allowable floating range corresponding to the parameter in the real-time monitoring data, if the data difference is not within the allowable floating range, mark the parameter corresponding to the data difference as a deviation parameter, and generate a deviation self-adjustment analysis signal;

[0040] The deviation analysis signaling is used to analyze the deviation parameters, set the deviation monitoring time zone with the generation time of the deviation parameters as the end point, and record the number of deviation parameters in the deviation monitoring time zone as the deviation number; if the deviation number is greater than two, record the generation time of the deviation parameters, and calculate the time difference between the generation times of adjacent deviation parameters to obtain the adjacent time difference value, and calculate the standard deviation of all adjacent time difference values ​​in the deviation monitoring time zone to obtain the deviation time fluctuation value;

[0041] Obtain the parameter value of the parameter corresponding to the deviation parameter at any collection time in the deviation monitoring time zone, and calculate the mean and standard deviation of the parameter values ​​in the deviation monitoring time zone to obtain the deviation mean and deviation fluctuation value;

[0042] The data difference, deviation number, skew fluctuation value, deviation from the mean, and deviation fluctuation value are weighted to obtain the deviation impact value corresponding to the parameter.

[0043] Preferably, the status information corresponding to the parts is diagnosed and analyzed, specifically:

[0044] The standard value of any parameter in the state information corresponding to the set part is calculated by difference calculation between the parameter value in the state information and the standard value corresponding to the parameter to obtain the state parameter difference;

[0045] Set the daily monitoring time zone, calculate the mean and standard deviation of the state parameter difference within the daily monitoring time zone, and obtain the state parameter mean and state parameter fluctuation value;

[0046] Perform weighted calculation on the state parameter difference, state parameter mean, and state parameter fluctuation value to obtain the state parameter abnormal value;

[0047] The abnormal values ​​of the state parameters of all parameters in the state information corresponding to the parts are weighted to obtain the daily state abnormality.

[0048] Preferably, the control management platform also includes a communication module, a registration module, and a storage module;

[0049] A storage module for storing and accessing the device's real-time monitoring data, environmental information, environmental analysis results, adaptive analysis data, and daily and recent diagnostic results;

[0050] Communication module, responsible for managing the information transmission between modules within the device and data exchange with external systems;

[0051] The registration module is used to allow users to register and submit personal information, and provide authorized login accounts for users who have passed the registration; the authorized login accounts are used to remotely log in to the control and management platform through the communication module.

[0052] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0053] 1. In the present application, by integrating the tank truck pressurized liquid phase interface, tank truck liquid phase interface, tank truck gas phase interface, supercharger, vaporizer and reheater and other equipment into a framework, the inerting process, replacement process and unloading process are integrated and integrated, and LNG can be refueled to the receiving ship at any dock and at any location of the dock. After the refueling is completed, the equipment can be transported away immediately without occupying the dock space for a long time, so that the refueling equipment meets the effect of good mobility and low cost.

[0054] 2. In this application, the ship's storage tank is protected by gradually lowering the temperature. When the temperature conditions in the ship's storage tank meet the standards, the liquid in the tank truck can be directly transported to the ship's storage tank through the connecting pipeline, thereby improving the LNG filling efficiency of the ship while ensuring safety.

[0055] 3. In the present application, through the coordinated work of the real-time monitoring module, the adaptive analysis module and the control module in the control management platform, the real-time monitoring data of each part of the device can be accurately analyzed and processed, and adaptive adjustment signals can be generated according to the deviation impact value to achieve real-time and precise control of the device to ensure the stable operation and efficient operation of the device. For example, when the parameters of key parts such as the supercharger or gasifier deviate, they can be adjusted in time to avoid affecting the filling efficiency and quality; and combined with the environmental analysis module, it helps the device to perform adaptive adjustments under different environmental conditions, thereby enhancing the environmental adaptability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Figure 1 An overall schematic diagram of a filling device provided according to an embodiment of the present invention is shown.

[0057] Figure 2 A principle block diagram of a control and management platform for a filling device provided according to an embodiment of the present invention is shown.

[0058] Legend:

[0059] 1. Frame; 2. Tank truck liquid phase interface; 3. Tank truck pressurized liquid phase interface; 4. Tank truck gas phase interface; 5. Supercharger; 6. Connecting pipeline; 7. Valve; 8. Standby vaporizer interface; 9. Vaporizer; 10. Divergence pipeline; 11. Nitrogen bottle group; 12. Reheater; 13. Liquid outlet. DETAILED DESCRIPTION

[0060] 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.

[0061] See also Figure 1-2 The present invention provides a technical solution: a multifunctional integrated ship LNG filling device, including a frame 1 and a connecting pipeline 6, and also includes integrated in the frame 1:

[0062] Pressurization system: The tank truck is self-pressurized by partially vaporizing the liquid in the tank truck and returning it to the tank truck;

[0063] Gasification system: converts the liquid stored in the tank truck into gas and transports it to the ship's storage tank;

[0064] Auxiliary heating system: to increase the temperature of the liquid after vaporization;

[0065] Pipeline system: to connect the liquid in the tank truck to the ship's storage tank;

[0066] Control management platform, including real-time monitoring module, safety diagnosis module, environmental analysis module, adaptive analysis module and control module;

[0067] The real-time monitoring module is used to monitor the real-time monitoring data, environmental information and status information of each part in the device; it should be noted that each part includes the supercharger 5, the vaporizer 9, the reheater 12, the tank truck pressurized liquid phase interface 3, the tank truck liquid phase interface 2, the tank truck gas phase interface 4, the connecting pipeline 6 and the diverging pipeline 10, and the nitrogen cylinder group 11. The real-time monitoring data, environmental information, and status information corresponding to each part are specifically set according to the parameters that the components need to collect;

[0068] The environmental analysis module is used to analyze the environmental information of each part of the device, specifically:

[0069] Set the expected value corresponding to any environmental parameter in the environmental information corresponding to the part, calculate the difference between the environmental parameter in the environmental information and the expected value corresponding to the environmental parameter, and obtain the expected difference value YQ1 of the environmental parameter;

[0070] Set the environment change time zone, calculate the mean and standard deviation of the expected difference of the environmental parameters within the environment change time zone, and obtain the environmental mean value YQ2 and environmental parameter fluctuation value YQ3;

[0071] The expected difference of the ring parameter, the ring mean value, and the ring parameter fluctuation value are weighted and calculated using the formula , get the environmental parameter impact value YQ corresponding to the environmental parameter in the environmental information; where a1, a2, and a3 represent the weighted impact factors corresponding to the environmental parameter expected difference, the environmental mean, and the environmental parameter fluctuation value, respectively;

[0072] The environmental parameter impact values ​​of all environmental parameters in the environmental information are weighted and the formula is used , and obtain the environmental impact value Y; where j represents the number of the environmental parameter in the environmental information, D represents the total number of environmental parameters in the environmental information, jYQ and jy represent the environmental parameter impact value of environmental parameter j in the environmental information and its corresponding weight, respectively, and b1 is the environmental impact constant;

[0073] The adaptive analysis module is used to analyze the real-time monitoring data of each part, specifically:

[0074] Set the standard value of any parameter in the real-time monitoring data corresponding to the part, calculate the difference between the numerical value of any parameter in the real-time monitoring data and the standard value corresponding to the parameter, and obtain the data difference SL1; set the allowable floating range corresponding to the parameter in the real-time monitoring data, if the data difference is not within the allowable floating range, mark the parameter corresponding to the data difference as a deviation parameter, and generate a deviation self-adjustment analysis signal;

[0075] The deviation analysis signaling is used to analyze the deviation parameters, set the deviation monitoring time zone with the generation time of the deviation parameters as the end point, and record the number of deviation parameters in the deviation monitoring time zone as the deviation number; if the deviation number is greater than two, record the generation time of the deviation parameters, and calculate the time difference between the generation times of adjacent deviation parameters to obtain the adjacent time difference value LC1, and calculate the standard deviation of all adjacent time difference values ​​in the deviation monitoring time zone to obtain the deviation time fluctuation value LC2;

[0076] Obtain the parameter value of the parameter corresponding to the deviation parameter at any collection time in the deviation monitoring time zone, and calculate the mean and standard deviation of the parameter values ​​in the deviation monitoring time zone to obtain the deviation mean SL2 and the deviation fluctuation value SL3;

[0077] The data difference, deviation number, time fluctuation value, deviation from the mean, and deviation from the fluctuation value are weighted and the formula is used. , and obtain the deviation influence value P corresponding to the parameter; where z1, z2, z3, z4, and z5 represent the weights corresponding to the data difference, deviation from the mean, deviation fluctuation value, deviation number, and deviation time fluctuation value, respectively;

[0078] A deviation threshold corresponding to the parameter is set. If the deviation impact value is greater than the deviation threshold, it means that the value of the parameter deviates from the expected value of the parameter, and an adaptive adjustment signaling is generated;

[0079] The deviation influence values ​​of all parameters in the real-time monitoring data corresponding to the part are weighted and the formula is used , get the control value T corresponding to the part; where i represents the number of the parameter in the real-time monitoring data corresponding to the part, N represents the total number of parameters in the real-time monitoring data, iP and im represent the deviation influence value and corresponding weight of parameter i in the real-time monitoring data corresponding to the part respectively;

[0080] The control value corresponding to the part and the environmental impact value are processed, and the formula is used , and obtain the adaptive control coefficient S; where d1 and d2 represent the weights corresponding to the control value and the environmental impact value of the part respectively;

[0081] The safety diagnosis module is used to diagnose and analyze the status information corresponding to the parts, specifically:

[0082] The standard value of any parameter in the state information corresponding to the set part is calculated by difference between the parameter value in the state information and the standard value corresponding to the parameter to obtain the state parameter difference ZC1;

[0083] Set the daily monitoring time zone, calculate the mean and standard deviation of the state parameter difference within the daily monitoring time zone, and obtain the state parameter mean ZC2 and state parameter fluctuation value ZC3;

[0084] The state parameter difference, state parameter mean, and state parameter fluctuation value are weighted and calculated using the formula , and obtain the abnormal value ZC of the state parameter; where w1, w2, and w3 represent the weights corresponding to the state parameter difference, the state parameter mean, and the state parameter fluctuation value, respectively;

[0085] The abnormal values ​​of the state parameters of all parameters in the state information corresponding to the part are weighted and the formula is used to calculate the abnormal values ​​of the state parameters of all parameters in the state information corresponding to the part. , and obtain the daily state abnormal value G; where f represents the number of the parameter in the state information, F represents the total number of parameters in the state information, fZC and fh represent the state parameter abnormal value of parameter f in the state information and its corresponding weight respectively;

[0086] Set a daily state deviation threshold. If the daily state abnormal value is greater than the daily state deviation threshold, it indicates that the state of the component in the monitoring time zone is abnormal or deviates from expectations. Generate a daily state abnormal signaling, and mark the daily state abnormal value, state parameter abnormal value, state parameter difference, state parameter mean, state parameter fluctuation value and daily monitoring time zone corresponding to the daily state abnormal signaling as daily diagnosis results;

[0087] Set a recent monitoring time zone, calculate the mean and standard deviation of the daily state abnormal values ​​of all daily monitoring time zones within the recent monitoring time zone, and obtain the recent state abnormal mean G1 and the recent state abnormal trend value G2;

[0088] The daily state abnormal value, the recent state abnormal mean, and the recent state abnormal trend value are weighted and the formula is used to calculate the abnormal value. , get the recent state impact value E; where e0, e1, and e2 represent the weights corresponding to the daily state abnormal value, the recent state abnormal mean, and the recent state abnormal trend value, respectively; mark the daily state abnormal value, the recent state abnormal mean, and the recent state abnormal trend value as recent diagnosis results;

[0089] The recent status impact values ​​of all parts in the filling device are weighted and the formula is used , obtain the recent comprehensive abnormal value R; wherein v represents the number of the corresponding part in the filling device, P represents the total number of parts in the filling device, vG and vδ represent the recent state impact value corresponding to the part v in the filling device and its corresponding weight respectively; set the state signaling range group, including the value range of the safe state, abnormal state, and dangerous state signaling; match the recent comprehensive abnormal value with the state signaling range group to obtain the corresponding state signaling;

[0090] The control module is used to receive corresponding signaling to perform corresponding operations, specifically:

[0091] When receiving the adaptive adjustment signaling, real-time adjustment is performed according to the adaptive adjustment coefficient corresponding to the part;

[0092] It should be noted that, in more detail:

[0093] If the deviation impact value of the pressure corresponding to the supercharger 5 is greater than the deviation threshold corresponding to the pressure, an adaptive regulation signal corresponding to the pressure of the supercharger 5 is generated; after receiving the signal, the control module increases the power of the supercharger or adjusts the opening of the relevant valve according to the adaptive regulation coefficient corresponding to the supercharger 5 to increase the pressure and ensure the pressure is stable during the filling process; wherein, the relevant valves include the liquid inlet valve, regulating valve and pressure release valve matched with the supercharger 5, and the relevant valves are existing mature technologies, so they are not clearly stated in the specification;

[0094] If the deviation impact value corresponding to the temperature of the gasifier 9 is greater than the deviation threshold corresponding to the temperature, an adaptive adjustment signaling corresponding to the temperature of the gasifier 9 is generated; after receiving the signaling, the control module reduces the heating power or increases the cooling measures according to the adaptive control coefficient of the gasifier 9, so that the temperature of the gasifier is restored to the normal range, thereby ensuring the safety and efficiency of the gasification process;

[0095] If the deviation impact value corresponding to the flow rate monitored by the flow sensor in the connecting pipeline 6 is greater than the deviation threshold corresponding to the flow rate, an adaptive regulation signal corresponding to the flow rate of the connecting pipeline 6 is generated; after receiving the signal, the control module adjusts the relevant valves according to the adaptive regulation coefficient corresponding to the connecting pipeline 6 to restore the normal flow rate and ensure smooth filling;

[0096] When the deviation impact value corresponding to the efficiency of the recuperator 12 is greater than the deviation threshold corresponding to its efficiency, an adaptive adjustment signaling corresponding to the efficiency of the recuperator 12 is generated; after receiving the signaling, the control module adjusts the operating parameters of the recuperator 12, such as temperature setting or flow rate, according to the adaptive control coefficient corresponding to the efficiency of the recuperator 12, so as to optimize the efficiency of the recuperator 12;

[0097] When the deviation impact value corresponding to the liquid level in the tank truck pressurized liquid phase interface 3 or the tank truck liquid phase interface 2 is greater than the deviation threshold corresponding to the liquid level, an adaptive adjustment signal corresponding to the liquid level of the tank truck pressurized liquid phase interface 3 or the tank truck liquid phase interface 2 is generated; after receiving the signal, the control module adjusts the operating parameters of the delivery pump corresponding to the tank truck pressurized liquid phase interface 3 or the tank truck liquid phase interface 2 according to the adaptive control coefficient corresponding to the liquid level to maintain the stability of the liquid level;

[0098] When the deviation impact value corresponding to the pressure in the gas phase interface 4 of the tank truck is greater than the deviation threshold corresponding to the pressure, an adaptive regulation signal corresponding to the pressure of the gas phase interface 4 of the tank truck is generated; after receiving the signal, the control module adjusts the pressure relief or pressurization operation according to the adaptive regulation coefficient corresponding to the pressure to ensure pressure balance;

[0099] When the deviation impact value corresponding to the pressure in the divergent pipe 10 is greater than the deviation threshold corresponding to the pressure, an adaptive regulation signal corresponding to the pressure of the divergent pipe 10 is generated; after receiving the signal, the control module controls the opening of the pressure relief valve according to the adaptive regulation coefficient corresponding to the pressure to release the excess pressure and prevent system damage;

[0100] When the deviation impact value corresponding to the pressure in the nitrogen cylinder group 11 is greater than the deviation threshold corresponding to the pressure, an adaptive regulation signal corresponding to the pressure of the nitrogen cylinder group 11 is generated; after receiving the signal, the control module starts the spare nitrogen cylinder or increases the supply pressure according to the adaptive regulation coefficient corresponding to the pressure to ensure the stability of the nitrogen supply of the system;

[0101] When receiving the daily status abnormal signaling, the daily diagnosis results are sent to the maintenance personnel corresponding to the component;

[0102] When receiving the safety status signaling, it indicates that the filling device is operating normally and no action is required;

[0103] When receiving abnormal status signaling, it indicates that the filling device has an abnormal situation, obtains the recent status impact values ​​of all parts in the filling device and generates a maintenance list in order of size; sends the maintenance list and the location of the corresponding parts and the recent diagnosis results to the corresponding maintenance personnel;

[0104] When receiving the dangerous state signal, the surface filling device is in a dangerous state. According to the safety protocol, the device operation is stopped immediately or the dangerous part is isolated.

[0105] The boosting system is a booster 5 , the gasification system is a gasifier 9 , and the auxiliary heating system is a recuperator 12 .

[0106] The liquid nitrogen or liquid natural gas in the tank truck is introduced into the booster 5 through the pipeline system, and after being pressurized to a high-pressure gas state, it returns to the tank truck through the pipeline system to increase the internal pressure of the tank truck, so that the liquid stored in the tank truck is first discharged into the vaporizer 9 through the pipeline system under the action of pressure, and then introduced into the reheater 12 through the pipeline system after being vaporized and heated. The reheater 12 will further heat the partially vaporized natural gas to reach the required temperature, and finally the heated gas is discharged into the ship storage tank through the pipeline system.

[0107] The liquid in the tank truck passes through the above system to discharge the heated and converted gas into the ship's storage tank in a gradually cooled manner, so that the temperature environment in the ship's storage tank gradually decreases with the temperature change of the liquid after vaporization, avoiding a sudden drop in the ship's storage tank temperature, causing thermal expansion and contraction of the gas storage tank material. This change may increase the structural stress of the gas storage tank and may even cause cracks or deformation.

[0108] The ship's storage tank is protected by gradually lowering the temperature. When the temperature in the ship's storage tank reaches the standard, the liquid in the tank truck can be directly transported to the ship's storage tank through the connecting pipeline 6, thereby improving the efficiency of LNG filling in the ship while ensuring safety.

[0109] The filling of LNG is divided into the following steps:

[0110] 1. Inerting process: Before injecting natural gas into the ship's storage tank via a tank truck, nitrogen is first introduced into the ship's storage tank through the filling device via a tank truck filled with liquid nitrogen for inerting treatment.

[0111] 2. Replacement process: When nitrogen is introduced into the ship's storage tank, the tank is ventilated to reduce the hydrocarbon gas content in the cargo oil tank and ensure that no flammable air in the cargo tank is brought into the storage tank during the degassing process;

[0112] 3. Unloading process: After nitrogen is injected and the required inert environment is reached, natural gas injection can begin.

[0113] Specifically, Figure 1 As shown, the piping system includes:

[0114] Pressurized liquid phase pipeline: the supercharger 5 is connected to the tank truck pressurized liquid phase interface 3 through the connecting pipeline 6, which is matched with the tank truck liquid inflow;

[0115] Liquid phase pipeline: the vaporizer 9 is connected to the tank truck liquid phase interface 2 through the connecting pipeline 6 for the inflow of liquid from the tank truck. The vaporizer 9 is connected to the reheater 12 through the connecting pipeline 6. The reheater 12 is connected to the liquid outlet 13 through the connecting pipeline 6 for the injection of gas and liquid from the ship storage tank. The liquid outlet 13 and the tank truck liquid phase interface 2 are connected to a connecting pipeline 6 for directly transporting the liquid in the tank truck to the ship storage tank.

[0116] Pressurized gas phase pipeline: The supercharger 5 is connected to the gas phase interface 4 of the tank truck through the connecting pipeline 6.

[0117] By connecting the tank truck pressurized liquid phase interface 3 and the tank truck gas phase interface 4 to the tank truck's gas tank, a self-pressurization method is first used to allow a small amount of liquid to flow into the supercharger 5 and be vaporized, and then pass into the gas tank from the tank truck gas phase interface 4, thereby increasing the pressure in the gas tank, so that the liquid in the tank truck enters the vaporizer 9 through the tank truck liquid phase interface 2. The vaporizer 9 heats the liquid natural gas LNG stored at low temperature to a gaseous state, and then inputs the gaseous LNG into the reheater 12 through the connecting pipeline 6. The reheater 12 further heats the partially vaporized natural gas to reach the required temperature for entering the ship's storage tank, and finally injects it into the ship's storage tank through the liquid outlet 13.

[0118] Divergence pipeline: The pressurized liquid phase pipeline, the liquid phase pipeline and the pressurized gas phase pipeline are all connected with a divergence pipeline 10 for pressure relief.

[0119] In order to ensure the safety of the filling process, all liquid or gas fuel delivery pipelines that may be isolated are connected to the diverging pipeline 10, and valves 7 for releasing pressure are installed in the diverging pipeline 10. These valves 7 are used to release pressure when the pressure exceeds the set value, thereby ensuring the safety, efficiency and accuracy of the filling process.

[0120] Spare pipeline: The vaporizer 9 is connected to a spare vaporizer interface 8 through a connecting pipeline 6 for use in parallel with another vaporizer 9 .

[0121] The standby gasifier interface 8 enables the parallel use of two gasifiers 9. When the ambient temperature is greater than 15 degrees Celsius, gas can be delivered to the transport ship storage tank through a single gasifier 9, or two gasifiers 9 can be connected in parallel to deliver gas to the transport ship through the standby gasifier interface 8.

[0122] When the ambient temperature is less than or equal to 15 degrees Celsius, the gas can be transported to the storage tank of the transport ship after being reheated by two gasifiers 9 connected in parallel and reheated by the reheater 12.

[0123] Specifically, Figure 1 As shown, valves 7 for controlling the opening and closing of the channels are provided in the connecting pipeline 6 and the diverging pipeline 10 , and a nitrogen bottle group 11 connected to the liquid outlet 13 through the connecting pipeline 6 is also integrated in the frame 1 .

[0124] The liquid phase pipeline and gas phase pipeline responsible for each workstation are connected in parallel, and a valve 7 responsible for opening and closing the channel is provided in the pipeline to control the connectivity of the pipeline.

[0125] The control and management platform also includes a communication module, a registration module, and a storage module;

[0126] A storage module for storing and accessing the device's real-time monitoring data, environmental information, environmental analysis results, adaptive analysis data, and daily and recent diagnostic results;

[0127] Communication module, responsible for managing the information transmission between modules within the device and data exchange with external systems;

[0128] The registration module is used to allow users to register and submit personal information, and provide authorized login accounts for users who have passed the registration; the authorized login accounts are used to remotely log in to the control and management platform through the communication module.

[0129] Under the synergistic effect of the communication module, storage module and registration module, firstly, the storage module properly stores key data, the communication module ensures the stability and accuracy of data transmission, and the registration module limits access rights to prevent unauthorized operations, which together ensure that data is not leaked, tampered with or lost, and improve the security and reliability of data; secondly, the data exchange between the communication module and the external system enables the filling device to adapt to new needs and new technologies that may appear in the future, improving the scalability and compatibility of the system; the large-capacity storage capacity of the storage module reserves space for the subsequent addition of new functions and data types, and the registration module can conveniently manage the access of new users and new devices; thirdly, users obtain authorized login accounts through the registration module, and use the communication module to remotely log in to the control and management platform to obtain the required information at any time. The storage module provides users with historical data query functions, which helps users make decisions and analysis, and improves user experience and management efficiency.

[0130] During the LNG filling process, due to the extremely volatile nature of LNG, the tank pressure in the ship will gradually increase over time. The nitrogen cylinder group 11 provides necessary nitrogen in this process to maintain automatic control of the nitrogen pressure of the primary and secondary insulation layers and ensure the stability of the tank pressure.

[0131] In the LNG filling system, all liquid or gas fuel pipelines that may be isolated must be equipped with pressure relief valves. The nitrogen cylinder group 11 provides necessary nitrogen to ensure that the pressure can be released in time when the pressure exceeds the set value, thereby ensuring system safety.

[0132] The above description of the embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A multifunctional integrated ship LNG filling device, comprising a frame (1) and a connecting pipeline (6), It is characterized in that Also included are the following integrated into the framework (1): Pressurization system: The tank truck is self-pressurized by partially vaporizing the liquid in the tank truck and returning it to the tank truck; Gasification system: converts the liquid stored in the tank truck into gas and transports it to the ship's storage tank; Auxiliary heating system: to increase the temperature of the liquid after vaporization; Pipeline system: to connect the liquid in the tank truck to the ship's storage tank; Control management platform, including real-time monitoring module, safety diagnosis module, environmental analysis module, adaptive analysis module and control module; The real-time monitoring module is used to monitor the real-time monitoring data, environmental information and status information of each part of the device; The environmental analysis module is used to analyze the environmental information of each part of the device and obtain the environmental impact value corresponding to the part; The adaptive analysis module is used to analyze the real-time monitoring data of each part to obtain the deviation impact value corresponding to the parameter in the real-time monitoring data; set the deviation threshold corresponding to the parameter. If the deviation impact value is greater than the deviation threshold, it means that the value of the parameter deviates from the expected value of the parameter, and an adaptive adjustment signaling is generated; The deviation influence values ​​of all parameters in the real-time monitoring data corresponding to the part are weighted to obtain the control value corresponding to the part; the control value corresponding to the part is processed with the environmental influence value to obtain the adaptive control coefficient; Safety diagnosis module, used to diagnose and analyze the status information corresponding to the parts and obtain abnormal values ​​of daily status; Set a daily state deviation threshold. If the daily state abnormal value is greater than the daily state deviation threshold, it indicates that the state of the component in the monitoring time zone is abnormal or deviates from expectations. Generate a daily state abnormal signaling, and mark the daily state abnormal value, state parameter abnormal value, state parameter difference, state parameter mean, state parameter fluctuation value and daily monitoring time zone corresponding to the daily state abnormal signaling as daily diagnosis results; Set a recent monitoring time zone, calculate the mean and standard deviation of the daily status abnormal values ​​of all daily monitoring time zones within the recent monitoring time zone, and obtain the recent status abnormal mean and recent status abnormal trend value; The daily state abnormal value, the recent state abnormal mean value, and the recent state abnormal trend value are weighted to obtain the recent state impact value; the daily state abnormal value, the recent state abnormal mean value, and the recent state abnormal trend value are marked as recent diagnosis results; The recent state influence values ​​of all parts in the filling device are weighted to obtain the recent comprehensive abnormal value; Set the state signaling range group, including the value ranges of safe state, abnormal state, and dangerous state signaling; match the recent comprehensive abnormal value with the state signaling range group to obtain the corresponding state signaling; The control module is used to receive corresponding signaling to perform corresponding operations, specifically: When receiving the adaptive adjustment signaling, real-time adjustment is performed according to the adaptive adjustment coefficient corresponding to the part; When receiving the daily status abnormal signaling, the daily diagnosis result is sent to the maintenance personnel corresponding to the component.

2. A multifunctional integrated ship LNG filling device according to claim 1, It is characterized in that The boosting system is a booster (5), the gasification system is a gasifier (9), and the auxiliary heating system is a recuperator (12).

3. A multifunctional integrated ship LNG filling device according to claim 2, It is characterized in that The pipeline system comprises: Pressurized liquid phase pipeline: the pressure booster (5) is connected to a tank truck pressurized liquid phase interface (3) through a connecting pipeline (6) for the tank truck liquid to flow in; Liquid phase pipeline: the vaporizer (9) is connected to a tank truck liquid phase interface (2) through a connecting pipeline (6) for the inflow of liquid from a tank truck; the vaporizer (9) is connected to a reheater (12) through a connecting pipeline (6); the reheater (12) is connected to a liquid outlet (13) through a connecting pipeline (6) for the injection of gas and liquid into a ship storage tank; a connecting pipeline (6) is connected between the liquid outlet (13) and the tank truck liquid phase interface (2) for the direct transport of liquid from the tank truck to the ship storage tank; Pressurized gas phase pipeline: the supercharger (5) is connected to the tank truck gas phase interface (4) via a connecting pipeline (6); Divergence pipeline: the pressurized liquid phase pipeline, the liquid phase pipeline and the pressurized gas phase pipeline are all connected to a divergence pipeline (10) for pressure relief; Spare pipeline: The vaporizer (9) is connected to a spare vaporizer interface (8) through a connecting pipeline (6) for use in parallel with another vaporizer (9).

4. A multifunctional integrated ship LNG filling device according to claim 3, It is characterized in that The connecting pipeline (6) and the diverging pipeline (10) are provided with valves (7) for controlling the opening and closing of the channels. The frame (1) is also integrated with a nitrogen bottle group (11) connected to the liquid outlet (13) via the connecting pipeline (6).

5. A multifunctional integrated ship LNG filling device according to claim 1, It is characterized in that Analyze the environmental information of each part of the device, specifically: Set the expected value corresponding to any environmental parameter in the environmental information corresponding to the part, calculate the difference between the environmental parameter in the environmental information and the expected value corresponding to the environmental parameter, and obtain the expected difference value of the environmental parameter; Set the environment change time zone, calculate the mean and standard deviation of the expected difference of the environmental parameters within the environment change time zone, and obtain the environmental mean and environmental parameter fluctuation value; Perform weighted calculation on the expected difference value of environmental parameters, the average value of environmental parameters, and the fluctuation value of environmental parameters to obtain the environmental parameter impact value corresponding to the environmental parameters in the environmental information; The environmental impact value is obtained by weighting the environmental impact values ​​of all environmental parameters in the environmental information.

6. A multifunctional integrated ship LNG filling device according to claim 1, It is characterized in that Analyze the real-time monitoring data of each part, specifically: The standard value of any parameter in the real-time monitoring data corresponding to the set part is calculated, and the value of any parameter in the real-time monitoring data is calculated with the standard value corresponding to the parameter to obtain the data difference; Set the allowable floating range corresponding to the parameter in the real-time monitoring data. If the data difference is not within the allowable floating range, mark the parameter corresponding to the data difference as a deviation parameter and generate a deviation self-adjustment analysis signal; The deviation analysis signaling is used to analyze the deviation parameters, set the deviation monitoring time zone with the generation time of the deviation parameters as the end point, and record the number of deviation parameters in the deviation monitoring time zone as the deviation number; if the deviation number is greater than two, record the generation time of the deviation parameters, and calculate the time difference between the generation times of adjacent deviation parameters to obtain the adjacent time difference value, and calculate the standard deviation of all adjacent time difference values ​​in the deviation monitoring time zone to obtain the deviation time fluctuation value; Obtain the parameter value of the parameter corresponding to the deviation parameter at any collection time in the deviation monitoring time zone, and calculate the mean and standard deviation of the parameter values ​​in the deviation monitoring time zone to obtain the deviation mean and deviation fluctuation value; The data difference, deviation number, skew fluctuation value, deviation from the mean, and deviation fluctuation value are weighted to obtain the deviation impact value corresponding to the parameter.

7. A multifunctional integrated ship LNG filling device according to claim 1, It is characterized in that Perform diagnostic analysis on the status information corresponding to the parts, specifically: The standard value of any parameter in the state information corresponding to the set part is calculated by difference calculation between the parameter value in the state information and the standard value corresponding to the parameter to obtain the state parameter difference; Set the daily monitoring time zone, calculate the mean and standard deviation of the state parameter difference within the daily monitoring time zone, and obtain the state parameter mean and state parameter fluctuation value; Perform weighted calculation on the state parameter difference, state parameter mean, and state parameter fluctuation value to obtain the state parameter abnormal value; The abnormal values ​​of the state parameters of all parameters in the state information corresponding to the parts are weighted to obtain the daily state abnormality.

8. The multifunctional integrated ship LNG filling device according to claim 1, It is characterized in that The control and management platform also includes a communication module, a registration module, and a storage module; A storage module for storing and accessing the device's real-time monitoring data, environmental information, environmental analysis results, adaptive analysis data, and daily and recent diagnostic results; Communication module, responsible for managing the information transmission between modules within the device and data exchange with external systems; The registration module is used to allow users to register and submit personal information, and provide authorized login accounts for users who have passed the registration; The authorized login account is used to remotely log in to the control management platform through the communication module.

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