Method and system for motion correction of remaining useful life of a liquefied gas tank

Abstract

The application discloses a liquefied gas tank remaining maintenance time motion correction method and system, the method comprises the following steps: obtaining the current pressure, reference pressure, current temperature, reference temperature, current amplitude, reference amplitude, current compression factor and reference compression factor of the liquefied gas tank, and calculating the tank pressure change rate correction factor; obtaining the filling rate of the liquefied gas tank and the effective volume in the liquefied gas tank, and calculating the liquid phase volume in the liquefied gas tank; obtaining the acceleration, speed change rate and remaining maintenance time of the liquefied gas tank, combining the adjustment factor, calculating the time correction value, obtaining the initial remaining maintenance time of the liquefied gas tank, and calculating the corrected remaining maintenance time, so as to complete the motion correction of the remaining maintenance time.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of liquefied gas tank remaining maintenance time motion correction, and more particularly, to a liquefied gas tank remaining maintenance time motion correction method and system. BACKGROUND

[0002] LNG tank water-land (waterway, railway, highway) intermodal transportation is the third new LNG logistics mode parallel to pipeline transportation and LNG bulk carrier transportation, and gradually changes from previous pilot to normal operation. The remaining maintenance time of the LNG tank is a key parameter related to the safe transportation of the LNG tank. The existing laws, regulations and related technical rules require that the safety valve of the LNG tank should not be triggered to cause leakage of flammable gas during the transportation of the LNG tank on the ship and when the vehicle carrying the LNG tank passes through the tunnel and culvert. Therefore, only by accurately predicting the remaining maintenance time of the LNG tank can the above-mentioned accidents be avoided.

[0003] However, the existing industry method for predicting the remaining maintenance time of the LNG tank is basically calculated by the ratio between the heat leakage required for the LNG tank to reach the trigger state and the static daily evaporation rate measured by the LNG tank manufacturer in the LNG tank type test. The prediction result can only be used for the evaluation of the heat insulation performance of the LNG tank, and the prediction accuracy is insufficient for the safety control of the actual LNG tank transportation process, especially the water-land intermodal transportation. The static daily evaporation rate used as the basis for prediction is converted from the static test of liquid nitrogen as the medium under standard conditions according to the national standard GB / T 18443.5. The measured value is the static daily evaporation rate under standard conditions. During the actual tank storage and transportation process, the daily evaporation rate will change significantly due to changes in environmental temperature, gas-liquid volume, tank temperature and pressure, LNG composition, and tank motion. Although the saturation average algorithm can be modified by introducing the Russian model, the influence of tank motion during transportation is still not considered.

[0004] In view of the above problems, combined with the experimental data of the actual LNG tank transportation, there is a significant error between the result calculated by the existing industry method of heat flow non-uniformity coefficient correction model and the actual lossless maintenance time of the LNG tank. The safety valve of the LNG tank is triggered before the remaining maintenance time of the LNG tank calculated by the existing industry method, which also reflects that the existing industry method has certain safety hazards when applied to the actual tank, and a model correction needs to be proposed for the change of daily evaporation rate caused by motion to reduce the error between prediction and actuality and eliminate the above-mentioned hidden dangers. SUMMARY

[0005] To solve the above technical problems, the present application provides a liquefied gas tank remaining maintenance time motion correction method, which comprises:

[0006] obtaining the current pressure, reference pressure, current temperature, reference temperature, current amplitude, reference amplitude, current reference compression factor and reference compression factor of the liquefied gas tank, calculating the tank pressure change rate correction factor;

[0007] obtaining the filling rate and the effective volume in the liquefied gas tank, calculating the liquid phase volume in the liquefied gas tank;

[0008] obtaining the acceleration, velocity change rate and remaining maintenance time of the liquefied gas tank, combining with the adjustment factor, calculating the time correction value, and obtaining the initial remaining maintenance time of the liquefied gas tank, calculating the corrected remaining maintenance time, so as to complete the motion correction of the remaining maintenance time.

[0009] Further, the calculation of the tank pressure change rate correction factor comprises:

[0010] V correction =(P / P ref )*(T ref / T)*(Z ref / Z)*(A ref / A)

[0011] Wherein, V correction is the tank pressure change rate correction factor, P is the current pressure, P ref is the reference pressure, T ref is the reference temperature, T is the current temperature, Z ref is the reference compression factor, Z is the current compression factor, A ref is the reference amplitude, and A is the current amplitude.

[0012] Further, the calculation of the liquefied gas volume in the liquefied gas tank comprises:

[0013] V corrected =F**V correction *V initial

[0014] Wherein, V corrected is the liquid phase volume in the liquefied gas tank, F is the filling rate, and V initial is the effective volume in the liquefied gas tank.

[0015] Further, the calculation of the time correction value comprises:

[0016] ΔT=k*(a+v′*t))*V corrected

[0017] Wherein, ΔT is the time correction value, k is the adjustment factor, a is the acceleration, v' is the acceleration change rate, and t is the remaining maintenance time.

[0018] Further, the calculating the corrected remaining maintenance time comprises:

[0019] T corrected = T initial - ΔT

[0020] Wherein, T corrected is the corrected remaining maintenance time, T initial is the initial remaining maintenance time. The application further provides a motion correction system for the remaining maintenance time of a liquefied gas tank, comprising:

[0021] A module for calculating the correction factor of the rate of change of the tank pressure, configured to acquire the current pressure, the reference pressure, the current temperature, the reference temperature, the current amplitude, the reference amplitude, the current reference compression factor and the reference compression factor of the liquefied gas tank, and calculate the correction factor of the rate of change of the tank pressure;

[0022] A module for calculating the volume, configured to acquire the filling rate of the liquefied gas tank and the effective volume in the liquefied gas tank, and calculate the volume of the liquid phase in the liquefied gas tank;

[0023] A motion correction module, configured to acquire the acceleration, the rate of change of the speed and the remaining maintenance time of the liquefied gas tank, combine the adjustment factor, calculate the time correction value, acquire the initial remaining maintenance time of the liquefied gas tank, and calculate the corrected remaining maintenance time, so as to complete the motion correction of the remaining maintenance time.

[0024] Further, the calculating the correction factor of the rate of change of the tank pressure comprises:

[0025] V correction = (P / P ref )*(T ref / T)*(Z ref / Z)* * (A ref / A)

[0026] Wherein, V correction is the correction factor of the rate of change of the tank pressure, P is the current pressure, P ref is the reference pressure, T ref is the reference temperature, T is the current temperature, Z ref is the reference compression factor, Z is the current compression factor, A ref is the reference amplitude, and A is the current amplitude.

[0027] Further, the calculating the volume of the liquefied gas in the liquefied gas tank comprises:

[0028] V corrected = F**V correction *V initial

[0029] wherein, V corrected is the volume of liquid phase in the liquefied gas tank, F is the filling rate, V initial is the effective volume in the liquefied gas tank.

[0030] Further, the calculation of the time correction value comprises:

[0031] ΔT=k*(a+v′*t))*V corrected

[0032] wherein, ΔT is the time correction value, k is the adjustment factor, a is the acceleration, v′ is the acceleration change rate, t is the remaining maintenance time.

[0033] Further, the calculation of the corrected remaining maintenance time comprises:

[0034] T corrected =T initial -ΔT

[0035] wherein, T corrected is the corrected remaining maintenance time, T initial is the initial remaining maintenance time.

[0036] Overall, compared with the prior art, the above technical solutions conceived by the present application have the following beneficial effects:

[0037] The present application obtains the current pressure, reference pressure, current temperature, reference temperature, current amplitude, reference amplitude, current reference compression factor and reference compression factor of the liquefied gas tank, calculates the tank pressure change rate correction factor; obtains the filling rate of the liquefied gas tank and the effective volume in the liquefied gas tank, calculates the volume of liquefied gas in the liquefied gas tank; obtains the acceleration, speed change rate and remaining maintenance time of the liquefied gas tank, and combines the adjustment factor to calculate the time correction value, and obtains the initial remaining maintenance time of the liquefied gas tank, calculates the corrected remaining maintenance time, so as to complete the motion correction of the remaining maintenance time. The present application can correct the remaining maintenance time, and improves the safety of the liquefied gas tank. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 is the flow chart of the method of embodiment 1 of the present application;

[0039] Figure 2 is the structure diagram of the system of embodiment 2 of the present application. DETAILED DESCRIPTION

[0040] In order to better understand the above technical solutions, the above technical solutions will be described in detail below in combination with the drawings in the specification and specific embodiments.

[0041] The method provided by the application can be implemented in a terminal environment, which can include one or more of the following components: a processor, a storage medium, and a display screen. The storage medium stores at least one instruction, which is loaded and executed by the processor to implement the method described in the following embodiments.

[0042] The processor can include one or more processing cores. The processor connects various parts in the entire terminal through various interfaces and lines, and performs various functions of the terminal and processes data by running or executing instructions, programs, code sets or instruction sets stored in the storage medium, and calling data stored in the storage medium.

[0043] The storage medium can include random access memory (RAM) and read-only memory (ROM). The storage medium can be used to store instructions, programs, codes, code sets or instructions.

[0044] The display screen is used to display the user interface of various application programs.

[0045] In addition, those skilled in the art can understand that the structure of the terminal described above does not constitute a limitation on the terminal, and the terminal can include more or fewer components, or combine certain components, or different component arrangements. For example, the terminal also includes radio frequency circuit, input unit, sensor, audio circuit, power supply and other components, which are not described here.

[0046] Embodiment 1

[0047] As shown in the formula (1), the application embodiment provides a liquefied gas tank box remaining maintenance time motion correction method, which includes: Figure 1

[0048] Step 101, obtaining the current pressure, reference pressure, current temperature, reference temperature, current amplitude, reference amplitude, current reference compression factor and reference compression factor of the liquefied gas tank box, calculating the tank pressure change rate correction factor;

[0049] Specifically, the calculation of the tank pressure change rate correction factor includes:

[0050] V correction = (P / P ref )*(T ref / T)*(Z ref / Z) *(A ref / A)

[0051] Wherein, V correction is the tank pressure change rate correction factor, A ref ​A is the reference amplitude, A is the current amplitude, P is the current pressure, P ref A is the reference pressure, T ref A is the reference temperature, T is the current temperature, Z ref A is the reference compression factor, Z is the current compression factor (reference compression factor (Z ref ) refers to the compression factor of the gas under reference conditions, i.e. at a specific temperature (T ref ) and pressure (P ref ) The compression factor is a parameter that describes the degree of change in volume of a gas relative to an ideal gas at a given temperature and pressure; the current compression factor (Z) refers to the compression factor of the gas under current conditions, i.e. at a specific temperature (T) and pressure (P) The compression factor is a parameter that describes the degree of change in volume of a gas relative to an ideal gas at a given temperature and pressure).

[0052] Step 102, obtaining the filling rate of the liquefied gas tank and the effective volume in the liquefied gas tank, calculating the liquid phase volume in the liquefied gas tank;

[0053] Specifically, the calculation of the volume of liquefied gas in the liquefied gas tank includes:

[0054] V corrected = F * V correction * V initial

[0055] Where V corrected is the liquid phase volume in the liquefied gas tank, F is the filling rate, and V initial is the effective volume in the liquefied gas tank.

[0056] Step 103, obtaining the acceleration, velocity change rate and remaining maintenance time of the liquefied gas tank, combining with the adjustment factor to calculate the time correction value, and obtaining the initial remaining maintenance time of the liquefied gas tank to calculate the corrected remaining maintenance time, so as to complete the motion correction of the remaining maintenance time.

[0057] Specifically, the calculation of the time correction value includes:

[0058] ΔT = k * (a + v' * t) * V corrected

[0059] Where ΔT is the time correction value, k is the adjustment factor, a is the acceleration, v' is the acceleration change rate, and t is the remaining maintenance time.

[0060] Specifically, the calculation of the corrected remaining maintenance time includes:

[0061] T corrected = T initial - ΔT

[0062] wherein, T corrected is the corrected remaining shelf life, T initial is the initial remaining shelf life.

[0063] Embodiment 2

[0064] As Figure 2 shown, the embodiment of the present application also provides a liquefied gas tank remaining shelf life motion correction system, comprising:

[0065] A tank pressure change rate correction factor calculation module is configured to obtain the current pressure, reference pressure, current temperature, reference temperature, current amplitude, reference amplitude, current reference compression factor and reference compression factor of the liquefied gas tank, and calculate a tank pressure change rate correction factor.

[0066] Specifically, the tank pressure change rate correction factor calculation module comprises:

[0067] V correction = (P / P ref )*(T ref / T)*(Z ref / Z)*(A ref / A)

[0068] wherein, V correction is the tank pressure change rate correction factor, A ref is the reference amplitude, A is the current amplitude, P is the current pressure, P ref is the reference pressure, T ref is the reference temperature, T is the current temperature, Z ref is the reference compression factor, and Z is the current compression factor (the reference compression factor (Z ref ) refers to the compression factor of the gas under the reference conditions, i.e., specific temperature (T ref ) and pressure (P ref ). The compression factor is a parameter describing the degree of change in volume of the gas relative to the ideal gas under given temperature and pressure; the current compression factor (Z) refers to the compression factor of the gas under the current conditions, i.e., specific temperature (T) and pressure (P). The compression factor is a parameter describing the degree of change in volume of the gas relative to the ideal gas under given temperature and pressure).

[0069] A volume calculation module is configured to obtain the filling rate of the liquefied gas tank and the effective volume in the liquefied gas tank, and calculate the liquid phase volume in the liquefied gas tank.

[0070] Specifically, the volume calculation module comprises:

[0071] V corrected =F**Vcorrection initial

[0072] wherein, V corrected is the liquid volume in the liquefied gas tank, F is the filling rate, V initial is the effective volume in the liquefied gas tank.

[0073] a motion correction module, configured to acquire acceleration, velocity change rate and remaining maintenance time of the liquefied gas tank, calculate a time correction value in combination with an adjustment factor, acquire initial remaining maintenance time of the liquefied gas tank, and calculate corrected remaining maintenance time so as to complete motion correction of the remaining maintenance time.

[0074] Specifically, the calculation of the time correction value comprises:

[0075] ΔT=k*(a+v′*t))*V corrected

[0076] wherein, ΔT is the time correction value, k is the adjustment factor, a is the acceleration, v′ is the acceleration change rate, and t is the remaining maintenance time.

[0077] Specifically, the calculation of the corrected remaining maintenance time comprises:

[0078] T corrected =T initial -ΔT

[0079] wherein, T corrected is the corrected remaining maintenance time, and T initial is the initial remaining maintenance time.

[0080] Embodiment 3

[0081] The embodiment of the present application also provides a storage medium, which stores a plurality of instructions for implementing the motion correction method for the remaining maintenance time of the liquefied gas tank.

[0082] Optionally, in the embodiment, the storage medium can be located in any one of computer terminals in a computer terminal group in a computer network or in any one of mobile terminals in a mobile terminal group.

[0083] Optionally, in the embodiment, the storage medium is configured to store program codes for performing the following steps: step 101, acquiring current pressure, reference pressure, current temperature, reference temperature, current amplitude, reference amplitude, current reference compression factor and reference compression factor of the liquefied gas tank, and calculating a tank pressure change rate correction factor;

[0084] Specifically, the calculation of the tank pressure change rate correction factor comprises: ​

[0085] V correction =(P / P ref )*(T ref / T)*(Z ref / Z)*(A ref / A)

[0086] wherein V correction is a tank pressure change rate correction factor, A ref is a reference amplitude, A is a current amplitude, P is a current pressure, P ref is a reference pressure, T ref is a reference temperature, T is a current temperature, Z ref is a reference compressibility factor, Z is a current compressibility factor (the reference compressibility factor (Z ref ) refers to the compressibility factor of the gas under the reference conditions, i.e., a specific temperature (T ref ) and pressure (P ref ). The compressibility factor is a parameter describing the degree of change in the volume of the gas relative to an ideal gas under a given temperature and pressure; the current compressibility factor (Z) refers to the compressibility factor of the gas under the current conditions, i.e., a specific temperature (T) and pressure (P). The compressibility factor is a parameter describing the degree of change in the volume of the gas relative to an ideal gas under a given temperature and pressure).

[0087] Step 102, obtaining the filling rate of the liquefied gas tank and the effective volume in the liquefied gas tank, and calculating the liquid phase volume in the liquefied gas tank;

[0088] Specifically, the calculation of the volume of the liquefied gas in the liquefied gas tank includes:

[0089] V corrected =F*V correction *V initial

[0090] wherein V corrected is the liquid phase volume in the liquefied gas tank, F is the filling rate, and V initial is the effective volume in the liquefied gas tank.

[0091] Step 103, obtaining the acceleration, speed change rate and remaining maintenance time of the liquefied gas tank, combining with an adjustment factor to calculate a time correction value, obtaining the initial remaining maintenance time of the liquefied gas tank, and calculating the corrected remaining maintenance time to complete the motion correction of the remaining maintenance time.

[0092] Specifically, the calculation of the time correction value includes:

[0093] ΔT=k*(a+v′*t))*V corrected

[0094] wherein, ΔT is a time correction value, k is an adjustment factor, a is an acceleration, v' is an acceleration change rate, and t is a remaining maintenance time.

[0095] Specifically, the calculating the corrected remaining maintenance time comprises:

[0096] T corrected = T initial - ΔT

[0097] wherein, T corrected is the corrected remaining maintenance time, and T initial is an initial remaining maintenance time.

[0098] Embodiment 4

[0099] The embodiment of the present application also provides an electronic device, comprising a processor and a storage medium connected to the processor, wherein the storage medium stores a plurality of instructions, and the instructions can be loaded and executed by the processor, so that the processor can execute the motion correction method for the remaining maintenance time of the liquefied gas tank.

[0100] Specifically, the electronic device of the embodiment can be a computer terminal, which can comprise one or more processors and a storage medium.

[0101] The storage medium can be used to store software programs and modules, such as the motion correction method for the remaining maintenance time of the liquefied gas tank in the embodiment of the present application, and the corresponding program instructions / modules. The processor executes various functions, applications and data processing by running the software programs and modules stored in the storage medium, that is, implements the motion correction method for the remaining maintenance time of the liquefied gas tank. The storage medium can comprise a high-speed random storage medium, and can also comprise a non-volatile storage medium, such as one or more magnetic storage systems, flash memories or other non-volatile solid-state storage media. In some examples, the storage medium can further comprise storage media remotely arranged relative to the processor, and the remote storage media can be connected to the terminal through a network. Examples of the network include but are not limited to the Internet, an intranet, a local area network, a mobile communication network and a combination thereof.

[0102] The processor can call the information and applications stored in the storage medium through a transmission system to execute the following steps: step 101, acquiring the current pressure, reference pressure, current temperature, reference temperature, current amplitude, reference amplitude, current reference compression factor and reference compression factor of the liquefied gas tank, and calculating a tank pressure change rate correction factor;

[0103] Specifically, the calculating the tank pressure change rate correction factor comprises:

[0104] Vcorrection = (P / P ref ) * (T ref / T) * (Z ref / Z) * (A ref / A)

[0105] wherein V correction is a tank pressure change rate correction factor, A ref is a reference amplitude, A is a current amplitude, P is a current pressure, P ref is a reference pressure, T ref is a reference temperature, T is a current temperature, Z ref is a reference compressibility factor, Z is a current compressibility factor (the reference compressibility factor (Z ref ) refers to the compressibility factor of the gas under the reference conditions, i.e., a specific temperature (T ref ) and pressure (P ref ). The compressibility factor is a parameter describing the degree of change in the volume of the gas relative to an ideal gas under a given temperature and pressure; the current compressibility factor (Z) refers to the compressibility factor of the gas under the current conditions, i.e., a specific temperature (T) and pressure (P). The compressibility factor is a parameter describing the degree of change in the volume of the gas relative to an ideal gas under a given temperature and pressure).

[0106] Step 102, obtaining the filling rate of the liquefied gas tank and the effective volume in the liquefied gas tank, and calculating the liquid phase volume in the liquefied gas tank;

[0107] Specifically, the calculation of the volume of the liquefied gas in the liquefied gas tank includes:

[0108] V corrected = F * V correction * V initial

[0109] wherein V corrected is the liquid phase volume in the liquefied gas tank, F is the filling rate, and V initial is the effective volume in the liquefied gas tank.

[0110] Step 103, obtaining the acceleration, speed change rate and remaining maintenance time of the liquefied gas tank, combining with an adjustment factor to calculate a time correction value, obtaining the initial remaining maintenance time of the liquefied gas tank, and calculating the corrected remaining maintenance time to complete the motion correction of the remaining maintenance time.

[0111] Specifically, the calculation of the time correction value includes:

[0112] ΔT = k * (a + v' * t) * V corrected

[0113] Wherein, AT is the time correction value, k is the adjustment factor, a is the acceleration, v' is the acceleration change rate, t is the remaining maintenance time.

[0114] Specifically, the calculating the corrected remaining maintenance time comprises:

[0115] T corrected = T initial - AT

[0116] Wherein, T corrected is the corrected remaining maintenance time, T initial is the initial remaining maintenance time.

[0117] The above-mentioned embodiment numbers of the present application are only for description, and do not represent the advantages and disadvantages of the embodiments.

[0118] In the above-mentioned embodiments of the present application, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0119] In the several embodiments of the present application, it should be understood that the disclosed technology can be implemented in other ways. Of course, the above-mentioned system embodiments are only illustrative, for example, the division of the units is only a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some interfaces, units or modules, which can be electrical or other forms.

[0120] The units described as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, that is, they can be located in one place, or they can be distributed on multiple network units. According to actual needs, part or all of the units can be selected to achieve the purpose of the present embodiment scheme.

[0121] In addition, each functional unit in each embodiment of the present application can be integrated in one processing unit, or each unit can exist physically, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be realized in the form of hardware or in the form of software functional unit.

[0122] The integrated unit, if implemented in the form of a software function unit and sold or used as an independent product, can be stored in a computer readable storage medium. Based on such an understanding, the technical solutions of the present application, essentially or in other words, the part that contributes to the prior art or the whole or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium, and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: a U disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a mobile hard disk, a magnetic disk or an optical disk, and various media that can store program codes.

[0123] Obviously, the above embodiments are only examples for clearly illustrating, but not limitation on the embodiments. For those skilled in the art, based on the above description, other different forms of changes or variations can also be made. Here, it is not necessary and also impossible to enumerate all the embodiments. The obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A method for motion correction of the remaining maintenance time of a liquefied gas tank, characterized in that, include: The current pressure, reference pressure, current temperature, reference temperature, current amplitude, reference amplitude, current reference compressibility factor, and reference compressibility factor of the liquefied gas tank are obtained, and the tank pressure change rate correction factor is calculated. The correction factor for the rate of change of pressure inside the tank includes: V correction =(P / P ref )*(T ref / T)*(Z ref / Z)*(A ref / A) Among them, V correction This is a correction factor for the rate of change of pressure inside the tank, where P is the current pressure. ref For reference pressure, T ref T is the reference temperature, Z is the current temperature, and T is the reference temperature. ref Z is the reference compression factor, and A is the current compression factor. ref A is the reference amplitude, and A is the current amplitude. Obtain the filling rate and effective volume of the liquefied gas tank, and calculate the liquid phase volume inside the liquefied gas tank; The calculation of the liquid phase volume inside the liquefied gas tank includes: V corrected =F*V correction *V initial Among them, V correccted V is the volume of liquid phase inside the liquefied gas tank, F is the filling rate, and V is the liquid volume inside the tank. initial This refers to the effective volume inside the liquefied gas tank. The acceleration, rate of change of acceleration, and remaining duration of the liquefied gas tank are obtained, and the time correction value is calculated in combination with the adjustment factor. The initial remaining duration of the liquefied gas tank is obtained, and the corrected remaining duration is calculated in order to complete the motion correction of the remaining duration. The calculation time correction value includes: ΔT=k*(a+v′*t)*V corrected Where ΔT is the time correction value, k is the adjustment factor, a is the acceleration, v′ is the rate of change of acceleration, and t is the remaining maintenance time; The calculated and corrected remaining duration includes: T corrected =T initial -ΔT Among them, T corrected T is the corrected remaining duration. initial This represents the initial remaining duration.

2. A motion correction system for the remaining maintenance time of a liquefied gas tank, characterized in that, include: The module for calculating the rate of change of pressure inside the tank is used to obtain the current pressure, reference pressure, current temperature, reference temperature, current amplitude, reference amplitude, current reference compressibility factor, and reference compressibility factor of the liquefied gas tank, and to calculate the rate of change of pressure inside the tank. The correction factor for the rate of change of pressure inside the tank includes: V correction =(P / P ref )*(T ref / T)*(Z ref / Z)*(A ref / A) Among them, V correction This is a correction factor for the rate of change of pressure inside the tank, where P is the current pressure. ref For reference pressure, T ref T is the reference temperature, Z is the current temperature, and T is the reference temperature. ref Z is the reference compression factor, and A is the current compression factor. ref A is the reference amplitude, and A is the current amplitude. The volume calculation module is used to obtain the filling rate of the liquefied gas tank and the effective volume inside the liquefied gas tank, and to calculate the liquid phase volume inside the liquefied gas tank. The calculation of the liquid phase volume inside the liquefied gas tank includes: V corrected =F*V correction *V initial Among them, V corrected V is the volume of liquid phase inside the liquefied gas tank, F is the filling rate, and V is the liquid volume inside the tank. initial This refers to the effective volume inside the liquefied gas tank. The motion correction module is used to acquire the acceleration, rate of change of acceleration, and remaining duration of the liquefied gas tank, and calculate the time correction value in combination with the adjustment factor, and acquire the initial remaining duration of the liquefied gas tank, and calculate the corrected remaining duration in order to complete the motion correction of the remaining duration. The calculation time correction value includes: ΔT=k*(a+v′*t)*V corrected Where ΔT is the time correction value, k is the adjustment factor, a is the acceleration, v′ is the rate of change of acceleration, and t is the remaining maintenance time; The calculated and corrected remaining duration includes: T corrected =T initial -ΔT Among them, T corrected T is the corrected remaining duration. initial This represents the initial remaining duration.

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