Method and device for determining flash point decay value of diesel fuel

Abstract

The present application provides a method and device for determining the flash point decay value of diesel, which belongs to the field of oil pipeline transportation technology. The method includes: determining the amount of diesel and the transportation pipeline of diesel; determining the first flash point value of diesel after being transported through the transportation pipeline when there is no gasoline tail oil in the transportation pipeline; determining the first volume ratio corresponding to the first flash point value according to the mapping relationship between the flash point value of diesel and the volume ratio of gasoline allowed to be mixed; determining the second volume ratio based on the amount of gasoline tail oil and diesel in the transportation pipeline; determining the difference between the first volume ratio and the second volume ratio as the third volume ratio; determining the second flash point value corresponding to the third volume ratio according to the mapping relationship; determining the difference between the third flash point value and the second flash point value of diesel before transportation as the flash point decay value. The above method can ensure the accuracy of the determined flash point decay value of diesel.

Description

Technical Field

[0001] The present application relates to the technical field of oil pipeline transportation, and in particular to a method and device for determining a flash point decay value of diesel. Background Art

[0002] In the process of transporting diesel through pipelines, the flash point of diesel will attenuate to a certain extent. Therefore, only when the difference between the flash point value of the diesel entering the pipeline and the standard flash point value is not less than the flash point attenuation value of the diesel during transportation can it be ensured that the flash point value of the diesel still meets the regulations when it reaches the end of the pipeline. This requires that the flash point attenuation value of the diesel be determined before transporting the diesel.

[0003] In the related art, the flash point value of any batch of diesel before and after transportation is generally tested, and the difference between the flash point value before and after transportation is determined as the flash point decay value, which is used as the flash point decay value of each batch of diesel.

[0004] However, since the amount and flash point of each batch of diesel are different, the flash point decay value of each batch of diesel is different. Therefore, determining the flash point decay value of one batch of diesel as the flash point decay value of another batch of diesel will result in an inaccurate flash point decay value. Summary of the invention

[0005] The embodiment of the present application provides a method and device for determining the flash point decay value of diesel, which can ensure the accuracy of the determined flash point decay value of diesel. The technical solution is as follows:

[0006] In one aspect, a method for determining a flash point decay value of diesel is provided, the method comprising:

[0007] Determining the amount of diesel and a delivery pipeline for the diesel;

[0008] Determine a first flash point value of the diesel after being transported through the delivery pipeline in the absence of gasoline tail oil in the delivery pipeline;

[0009] Determine, according to a mapping relationship between a flash point value of diesel and a volume percentage of gasoline allowed to be blended, a first volume percentage corresponding to the first flash point value, wherein the first volume percentage represents a volume percentage of gasoline allowed to be blended into the diesel when the gasoline tail oil is not blended;

[0010] Based on the amount of the gasoline tail oil and the amount of the diesel oil in the delivery pipeline, determining a second volume percentage, wherein the second volume percentage represents the volume percentage of the gasoline tail oil mixed into the diesel oil;

[0011] The difference between the first volume percentage and the second volume percentage is determined as a third volume percentage, wherein the third volume percentage represents the volume percentage of gasoline that is allowed to be blended into the diesel after the gasoline tail oil is blended;

[0012] According to the mapping relationship, determining a second flash point value corresponding to the third volume percentage, wherein the second flash point value represents the flash point value of the diesel after being mixed with the gasoline tail oil;

[0013] The difference between the third flash point value and the second flash point value of the diesel before transportation is determined as the flash point decay value, and the flash point decay value represents the flash point decay value of the diesel after being transported through the transmission pipeline in which the gasoline tail oil exists.

[0014] In a possible implementation, determining the first flash point value of the diesel after being transported through the delivery pipeline when there is no gasoline tail oil in the delivery pipeline includes:

[0015] Determine a first attenuation value of the diesel based on the distance of the delivery pipeline and a diesel flash point attenuation parameter, wherein the diesel flash point attenuation parameter represents an attenuation value of the diesel flash point per unit distance when the diesel is transported through the delivery pipeline in the absence of the gasoline tail oil in the delivery pipeline;

[0016] The difference between the third flash point value and the first attenuation value is determined as the first flash point value.

[0017] In another possible implementation, before determining the first attenuation value of the diesel based on the distance of the delivery pipeline and the flash point attenuation parameter of the diesel, the method further includes:

[0018] After transporting another batch of diesel through the delivery pipeline in which the gasoline tail oil exists, detecting the flash point value before and after transportation of the pure diesel oil portion, wherein the pure diesel oil portion is located after the diesel portion mixed with the gasoline tail oil in the delivery pipeline;

[0019] The difference between the flash point value before transportation and the flash point value after transportation is determined as the total attenuation value of the pure diesel oil portion in the entire transportation pipeline;

[0020] The quotient of the total attenuation value and the pipeline length of the transport pipeline is determined as the diesel flash point attenuation parameter.

[0021] In another possible implementation, before determining the second volume proportion based on the amount of gasoline tail oil and the amount of diesel oil in the delivery pipeline, the method further includes:

[0022] After transporting another batch of diesel through the delivery pipeline where the gasoline tail oil exists, determining a position range, the position range indicating the position where the gasoline tail oil is mixed into the diesel;

[0023] Determine the diesel amount and a fourth volume ratio corresponding to a plurality of positions within the position range, wherein the fourth volume ratio represents the volume ratio of the gasoline tail oil actually mixed into the diesel portion corresponding to the position;

[0024] Determining the amount of the gasoline tail oil mixed into the diesel part corresponding to each position according to the diesel amounts corresponding to the multiple positions and the fourth volume proportion;

[0025] The sum of the amounts of the gasoline tail oil mixed into the diesel parts corresponding to the multiple positions is determined as the amount of the gasoline tail oil present in the delivery pipeline.

[0026] In another possible implementation, after transporting another batch of diesel through the delivery pipeline where the gasoline tail oil exists, determining the location range includes:

[0027] After transporting the other batch of diesel through the delivery pipeline where the gasoline tail oil exists, starting from the diesel head, sequentially detecting the flash point values ​​of multiple diesel parts passing through the detection point;

[0028] If the diesel flash point value of the current diesel portion is the same as the diesel flash point value of the previous diesel portion, the range between the position of the diesel head and the position of the previous diesel portion is determined as the position range.

[0029] In another possible implementation, determining the diesel quantities and the fourth volume proportions corresponding to the plurality of positions within the position range includes:

[0030] According to the diesel flash point values ​​of the diesel parts corresponding to the multiple positions within the position range and the mapping relationship, determining the fifth volume proportions corresponding to the multiple positions, wherein the fifth volume proportion represents the volume proportion of gasoline allowed to be blended in the diesel parts corresponding to the positions;

[0031] Determine a sixth volume percentage according to the flash point value of the pure diesel oil portion after transporting the other batch of diesel and the mapping relationship, wherein the sixth volume percentage represents the volume percentage of gasoline allowed to be blended into the pure diesel oil portion;

[0032] A difference between the sixth volume proportion and the fifth volume proportion corresponding to the multiple positions is determined as a fourth volume proportion corresponding to the multiple positions.

[0033] In another possible implementation, the mapping relationship between the flash point value of diesel and the volume percentage of gasoline allowed to be blended includes:

[0034]

[0035] Among them, K g Indicates the volume percentage of gasoline allowed to be mixed into diesel, T S Indicates the actual flash point value of the diesel, T S0 Indicates the minimum allowable flash point value of diesel.

[0036] In another possible implementation, the method further includes:

[0037] In the case where the diesel has multiple delivery pipelines, the sum of the flash point decay values ​​corresponding to the multiple delivery pipelines is determined as the total flash point decay value, and the total flash point decay value represents the flash point decay value of the diesel after being transported through the multiple delivery pipelines where the gasoline tail oil exists.

[0038] On the other hand, a device for determining a flash point decay value of diesel is provided, the device comprising:

[0039] A delivery pipeline determination module, configured to determine the amount of diesel and a delivery pipeline for the diesel;

[0040] A first flash point determination module is configured to determine a first flash point value of the diesel after being transported through the delivery pipeline in the absence of gasoline tail oil in the delivery pipeline;

[0041] A first proportion determination module is configured to determine a first volume proportion corresponding to the first flash point value according to a mapping relationship between the flash point value of diesel and the volume proportion of gasoline allowed to be mixed, wherein the first volume proportion represents the volume proportion of gasoline allowed to be mixed into the diesel when the gasoline tail oil is not mixed;

[0042] A second proportion determination module is configured to determine a second volume proportion based on the amount of the gasoline tail oil and the amount of the diesel oil in the delivery pipeline, wherein the second volume proportion indicates the volume proportion of the gasoline tail oil mixed into the diesel;

[0043] A third volume ratio determination module is configured to determine the difference between the first volume ratio and the second volume ratio as a third volume ratio, wherein the third volume ratio represents the volume ratio of gasoline that is allowed to be blended into the diesel after the gasoline tail oil is blended;

[0044] A second flash point determination module is configured to determine a second flash point value corresponding to the third volume percentage according to the mapping relationship, wherein the second flash point value represents the flash point value of the diesel after being mixed with the gasoline tail oil;

[0045] The flash point decay determination module is configured to determine the difference between the third flash point value of the diesel before transportation and the second flash point value as a flash point decay value, wherein the flash point decay value represents the flash point decay value of the diesel after being transported through the transmission pipeline where the gasoline tail oil exists.

[0046] In a possible implementation, the first flash point determination module is configured to determine a first attenuation value of the diesel based on the distance of the delivery pipeline and a diesel flash point attenuation parameter, wherein the diesel flash point attenuation parameter represents an attenuation value of the diesel flash point per unit distance when the diesel is transported through the delivery pipeline when the gasoline tail oil is not present in the delivery pipeline; and determine a difference between the third flash point value and the first attenuation value as the first flash point value.

[0047] In another possible implementation, the first flash point determination module is further configured to detect the flash point value before transportation and the flash point value after transportation of the pure diesel oil portion after transporting another batch of diesel through the delivery pipeline in which the gasoline tail oil exists, wherein the pure diesel oil portion is located after the diesel portion mixed with the gasoline tail oil in the delivery pipeline; determine the difference between the flash point value before transportation and the flash point value after transportation as the total attenuation value of the pure diesel oil portion in the entire delivery pipeline; and determine the quotient of the total attenuation value and the pipeline length of the delivery pipeline as the diesel flash point attenuation parameter.

[0048] In another possible implementation, the device further includes:

[0049] a position range determination module, configured to determine a position range after transporting another batch of diesel through the delivery pipeline where the gasoline tail oil exists, wherein the position range indicates a position where the gasoline tail oil is mixed into the diesel;

[0050] a fourth proportion determination module, configured to determine the diesel quantity and a fourth volume proportion corresponding to a plurality of positions within the position range, wherein the fourth volume proportion indicates the volume proportion of the gasoline tail oil actually mixed into the diesel portion corresponding to the position;

[0051] A first oil quantity determination module is configured to determine the oil quantity of the gasoline tail oil mixed into the diesel part corresponding to each position according to the diesel quantities corresponding to the multiple positions and the fourth volume proportion;

[0052] The second oil quantity determination module is configured to determine the sum of the oil quantities of the gasoline tail oil mixed into the diesel parts corresponding to the multiple positions as the oil quantity of the gasoline tail oil existing in the transmission pipeline.

[0053] In another possible implementation, the position range determination module is configured to, after transporting the other batch of diesel through the delivery pipeline where the gasoline tail oil exists, detect the diesel flash point values ​​of multiple diesel parts passing through the detection point in sequence, starting from the diesel head; if the diesel flash point value of the current diesel part is the same as the diesel flash point value of the previous diesel part, then the range between the position of the diesel head and the position of the previous diesel part is determined as the position range.

[0054] In another possible implementation, the fourth proportion determination module is configured to determine the fifth volume proportion corresponding to the multiple positions within the position range according to the diesel flash point value of the diesel parts corresponding to the multiple positions and the mapping relationship, the fifth volume proportion indicating the volume proportion of gasoline allowed to be blended into the diesel parts corresponding to the positions; determine the sixth volume proportion according to the flash point value of the pure diesel oil part after transporting the other batch of diesel and the mapping relationship, the sixth volume proportion indicating the volume proportion of gasoline allowed to be blended into the pure diesel oil part; and determine the difference between the sixth volume proportion and the fifth volume proportion corresponding to the multiple positions as the fourth volume proportion corresponding to the multiple positions.

[0055] In another possible implementation, the mapping relationship between the flash point value of diesel and the volume percentage of gasoline allowed to be blended includes:

[0056]

[0057] Among them, K g Indicates the volume percentage of gasoline allowed to be mixed into diesel, T S Indicates the actual flash point value of the diesel, T S0 Indicates the minimum allowable flash point value of diesel.

[0058] In another possible implementation, the flash point decay determination module is further configured to determine the sum of the flash point decay values ​​corresponding to the multiple delivery pipelines as a total flash point decay value when the diesel has multiple delivery pipelines. The total flash point decay value represents the flash point decay value of the diesel after being transported through the multiple delivery pipelines where the gasoline tail oil exists.

[0059] The beneficial effects brought by the technical solution provided by the embodiment of the present application include at least:

[0060] The technical solution provided in the embodiment of the present application utilizes the mapping relationship between the flash point value of diesel and the volume percentage of gasoline allowed to be blended, and determines the flash point decay value of the diesel to be transported in a pipeline according to the amount of diesel oil to be transported in a pipeline and the flash point value, so that the accuracy of the determined flash point decay value can be guaranteed. In addition, when determining the flash point decay value of diesel, two reasons for the decay of the flash point value of diesel during the pipeline transportation process are taken into account: the decay of the flash point value caused by the transportation of pure diesel, and the decay of the flash point value caused by the blending of the gasoline tail oil in the transportation pipeline into the pure diesel. Therefore, the flash point value of the diesel after transportation is first determined in the case where there is no gasoline tail oil in the transportation pipeline, and then the flash point value of the diesel after blending with the gasoline tail oil is determined based on the flash point value, so that the flash point decay value finally determined includes both the flash point decay value caused by the transportation of pure diesel and the flash point decay value caused by the blending of the gasoline tail oil, and has high accuracy. Furthermore, when determining the flash point value of diesel after being mixed with gasoline tail oil, the volume percentage of gasoline allowed to be mixed in the diesel before being mixed with gasoline tail oil and the volume percentage of gasoline allowed to be mixed in the diesel after being mixed with gasoline tail oil are used to determine the volume percentage of gasoline that is still allowed to be mixed in the diesel after being mixed with gasoline tail oil. Then, using the mapping relationship between the flash point value of diesel and the volume percentage of gasoline allowed to be mixed, the volume percentage of gasoline that is still allowed to be mixed in the diesel after being mixed with gasoline tail oil is mapped to the flash point value of diesel after being mixed with gasoline tail oil. The method is scientific, and the determined flash point value of diesel after being mixed with gasoline tail oil has high accuracy, thereby ensuring the accuracy of the determined flash point attenuation value. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0062] Figure 1 It is a flow chart of a method for determining a flash point decay value of diesel provided in an embodiment of the present application;

[0063] Figure 2 It is a flow chart of a method for determining a flash point decay value of diesel provided in an embodiment of the present application;

[0064] Figure 3 It is a block diagram of a device for determining a flash point attenuation value of diesel provided in an embodiment of the present application. DETAILED DESCRIPTION

[0065] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0066] The terms "first", "second", "third", "fourth", etc. used in this application may be used herein to describe various concepts, but unless otherwise specified, these concepts are not limited by these terms. These terms are only used to distinguish one concept from another. For example, without departing from the scope of this application, a first flash point value may be referred to as a flash point value, and similarly, a second flash point value may be referred to as a first flash point value.

[0067] The terms "at least one", "a plurality of", "each", and "any" used in this application include one, two, or more than two, a plurality of includes two or more than two, each refers to each of the corresponding plurality, and any refers to any one of the plurality. For example, the plurality of delivery pipelines include three delivery pipelines, and each refers to each of the three delivery pipelines, and any refers to any one of the three delivery pipelines, which may be the first, the second, or the third.

[0068] Figure 1 This is a flow chart of a method for determining a flash point decay value of diesel provided in an embodiment of the present application. The execution subject is a device for determining a flash point decay value of diesel. Figure 1 , the method comprises the following steps.

[0069] 101: Determine the diesel fuel volume and diesel delivery pipeline.

[0070] 102: Determine the first flash point value of diesel after being transported through a pipeline in the absence of gasoline tail oil in the pipeline.

[0071] 103: According to the mapping relationship between the flash point value of diesel and the volume percentage of gasoline allowed to be mixed, determine the first volume percentage corresponding to the first flash point value, and the first volume percentage represents the volume percentage of gasoline allowed to be mixed in diesel when gasoline tail oil is not mixed.

[0072] 104: Based on the amount of gasoline tail oil and diesel oil in the transmission pipeline, determine a second volume ratio, where the second volume ratio represents the volume ratio of gasoline tail oil mixed in diesel.

[0073] 105: The difference between the first volume percentage and the second volume percentage is determined as the third volume percentage, and the third volume percentage represents the volume percentage of gasoline that is allowed to be mixed into the diesel after the gasoline tail oil is mixed.

[0074] 106: According to the mapping relationship, determine a second flash point value corresponding to the third volume ratio, the second flash point value represents the flash point value of the diesel after being mixed with gasoline tail oil.

[0075] 107: The difference between the third flash point value and the second flash point value of the diesel before transportation is determined as the flash point decay value, and the flash point decay value represents the flash point decay value of the diesel after being transported through a pipeline with gasoline tail oil.

[0076] The technical solution provided in the embodiment of the present application utilizes the mapping relationship between the flash point value of diesel and the volume percentage of gasoline allowed to be blended, and determines the flash point decay value of the diesel to be transported in a pipeline according to the amount of diesel oil to be transported in a pipeline and the flash point value, so that the accuracy of the determined flash point decay value can be guaranteed. In addition, when determining the flash point decay value of diesel, two reasons for the decay of the flash point value of diesel during the pipeline transportation process are taken into account: the decay of the flash point value caused by the transportation of pure diesel, and the decay of the flash point value caused by the blending of the gasoline tail oil in the transportation pipeline into the pure diesel. Therefore, the flash point value of the diesel after transportation is first determined in the case where there is no gasoline tail oil in the transportation pipeline, and then the flash point value of the diesel after blending with the gasoline tail oil is determined based on the flash point value, so that the flash point decay value finally determined includes both the flash point decay value caused by the transportation of pure diesel and the flash point decay value caused by the blending of the gasoline tail oil, and has high accuracy. Furthermore, when determining the flash point value of diesel after being mixed with gasoline tail oil, the volume percentage of gasoline allowed to be mixed in the diesel before being mixed with gasoline tail oil and the volume percentage of gasoline allowed to be mixed in the diesel after being mixed with gasoline tail oil are used to determine the volume percentage of gasoline that is still allowed to be mixed in the diesel after being mixed with gasoline tail oil. Then, using the mapping relationship between the flash point value of diesel and the volume percentage of gasoline allowed to be mixed, the volume percentage of gasoline that is still allowed to be mixed in the diesel after being mixed with gasoline tail oil is mapped to the flash point value of diesel after being mixed with gasoline tail oil. The method is scientific, and the determined flash point value of diesel after being mixed with gasoline tail oil has high accuracy, thereby ensuring the accuracy of the determined flash point attenuation value.

[0077] In a possible implementation, determining a first flash point value of diesel after being transported through a transmission pipeline in the absence of gasoline tail oil in the transmission pipeline includes:

[0078] Determine a first attenuation value of diesel based on the distance of the transmission pipeline and a diesel flash point attenuation parameter, wherein the diesel flash point attenuation parameter represents an attenuation value of the diesel flash point per unit distance when the diesel is transported through the transmission pipeline in the absence of gasoline tail oil in the transmission pipeline;

[0079] The difference between the third flash point value and the first attenuation value is determined as the first flash point value.

[0080] In another possible implementation, before determining the first attenuation value of the diesel based on the distance of the transmission pipeline and the flash point attenuation parameter of the diesel, the method further includes:

[0081] After transporting another batch of diesel through a pipeline with gasoline tailing oil, testing the flash point value before and after transportation of the pure diesel oil portion, where the pure diesel oil portion is located after the diesel portion mixed with gasoline tailing oil in the pipeline;

[0082] The difference between the flash point value before transportation and the flash point value after transportation is determined as the total attenuation value of the pure diesel oil portion in the entire transportation pipeline;

[0083] The quotient of the total attenuation value and the pipeline length of the transmission pipeline is determined as the diesel flash point attenuation parameter.

[0084] In another possible implementation, based on the amount of gasoline tail oil and the amount of diesel oil in the delivery pipeline, before determining the second volume percentage, the method further includes:

[0085] After transporting another batch of diesel through a pipeline where gasoline tail oil is present, a position range is determined, the position range indicating the position where gasoline tail oil is mixed into the diesel;

[0086] Determine the diesel amount and the fourth volume ratio corresponding to the plurality of positions within the position range, wherein the fourth volume ratio indicates the volume ratio of the gasoline tail oil actually mixed into the diesel part corresponding to the position;

[0087] Determine the amount of gasoline tail oil mixed into the diesel part corresponding to each position according to the diesel amount corresponding to the plurality of positions and the fourth volume ratio;

[0088] The sum of the amounts of gasoline tail oil mixed into the diesel parts corresponding to multiple positions is determined as the amount of gasoline tail oil present in the transmission pipeline.

[0089] In another possible implementation, after another batch of diesel is transported through a pipeline with gasoline tail oil, the location range is determined, including:

[0090] After transporting another batch of diesel through a pipeline with gasoline tail oil, starting from the head of the diesel, the flash point values ​​of multiple diesel parts passing through the test point are tested in sequence;

[0091] If the diesel flash point value of the current diesel portion is the same as the diesel flash point value of the previous diesel portion, the range between the position of the diesel head and the position of the previous diesel portion is determined as the position range.

[0092] In another possible implementation, determining the diesel quantities and the fourth volume proportions corresponding to a plurality of positions within the position range includes:

[0093] Determine the fifth volume proportions corresponding to the plurality of positions according to the diesel flash point values ​​and mapping relationships of the diesel parts corresponding to the plurality of positions within the position range, wherein the fifth volume proportion indicates the volume proportion of gasoline allowed to be blended into the diesel parts corresponding to the positions;

[0094] According to the flash point value and mapping relationship of the pure diesel oil portion after transporting another batch of diesel, the sixth volume percentage is determined, and the sixth volume percentage represents the volume percentage of gasoline allowed to be blended into the pure diesel oil portion;

[0095] The difference between the sixth volume proportion and the fifth volume proportion corresponding to the plurality of positions is determined as the fourth volume proportion corresponding to the plurality of positions.

[0096] In another possible implementation, the mapping relationship between the flash point value of diesel and the volume percentage of gasoline allowed to be blended includes:

[0097]

[0098] Among them, K g Indicates the volume percentage of gasoline allowed to be mixed into diesel, T S Indicates the actual flash point value of diesel, T S0 Indicates the minimum allowable flash point value of diesel.

[0099] In another possible implementation, the method further includes:

[0100] In the case where diesel has multiple delivery pipelines, the sum of the flash point decay values ​​corresponding to the multiple delivery pipelines is determined as the total flash point decay value, which represents the flash point decay value of diesel after being transported through multiple delivery pipelines with gasoline tail oil.

[0101] All the above optional technical solutions can be arbitrarily combined to form optional embodiments of the present application, which will not be described one by one here.

[0102] Figure 2 This is a flow chart of a method for determining a flash point decay value of diesel provided in an embodiment of the present application. The execution subject is a computer device. Figure 2 , the method comprises the following steps.

[0103] 201: Computer equipment determines the amount of diesel fuel and the diesel fuel delivery pipeline.

[0104] The diesel refers to the batch of diesel to be transported through pipelines. The diesel pipeline refers to the pipeline used to transport the diesel. Exemplarily, the diesel has multiple pipelines, that is, the diesel needs to be transported through the multiple pipelines in sequence.

[0105] Computer equipment includes any device that can perform computing functions, such as terminals and servers. Terminals also include computers, mobile phones, etc.

[0106] Exemplarily, the computer device obtains the diesel oil volume and the diesel oil delivery pipeline input by the user. Accordingly, after the user learns the diesel oil volume and the diesel oil delivery pipeline, he or she can input the diesel oil volume and the diesel oil delivery pipeline into the computer device.

[0107] For example, the computer device obtains the transportation start point and transportation end point of diesel fuel input by the user, and then the computer device determines the transportation pipeline of diesel fuel according to the stored start point and end point of each transportation pipeline. In this way, when there are many transportation pipelines, the user does not need to input each transportation pipeline, but only needs to input the transportation start point and transportation end point, and the computer device can determine the transportation pipeline used to transport diesel fuel, thereby improving the efficiency of determining the transportation pipeline.

[0108] 202: The computer device determines a first attenuation value of the diesel based on the distance of the transmission pipeline and the flash point attenuation parameter of the diesel.

[0109] The diesel flash point attenuation parameter indicates the attenuation value of the diesel flash point per unit distance when the diesel is transported through a pipeline when there is no gasoline tail oil in the pipeline.

[0110] The flash point of diesel refers to the lowest temperature at which a fire source causes the diesel sample vapor to flash instantly under specified test conditions. The flash point of diesel is both an indicator for controlling the volatility of diesel and an indicator for ensuring the safety of diesel. GB19147-2016 "Automotive Diesel" stipulates that the flash point of No. 0 diesel cannot be lower than 60°C.

[0111] It should be noted that, in the process of pipeline transportation of finished oil, gasoline and diesel are transported in an alternating order, so a part of gasoline tail oil will be mixed into the diesel head part, and after the diesel is canned at the destination station, the gasoline tail oil in the diesel head part will be remixed with the diesel, which will cause the flash point of the diesel to produce a certain attenuation value. Therefore, there are two main reasons for the attenuation of the flash point value of diesel during pipeline transportation: the flash point value attenuation caused by pure diesel transportation, that is, the flash point attenuation caused by the transportation pipeline itself, and the flash point value attenuation caused by the gasoline tail oil existing in the transportation pipeline being mixed into the pure diesel. Therefore, the embodiment of the present application is to determine the flash point attenuation values ​​caused by these two reasons respectively, and the sum of the flash point attenuation values ​​caused by these two reasons is determined as the final flash point attenuation value of diesel, so that the accuracy of the determined flash point attenuation value of diesel can be guaranteed. The above step 202 is to determine the flash point attenuation value caused by pure diesel transportation.

[0112] In a possible implementation, the computer device determines the first attenuation value of the diesel based on the distance of the delivery pipeline and the flash point attenuation parameter of the diesel as follows: the computer device determines the product of the distance of the delivery pipeline and the flash point attenuation parameter of the diesel as the first attenuation value of the diesel. Exemplarily, in the case where the diesel has multiple delivery pipelines, for each delivery pipeline, the computer device determines the product of the distance of the delivery pipeline and the flash point attenuation parameter of the diesel in the delivery pipeline as the first attenuation value of the diesel in the delivery pipeline. Since the flash point attenuation parameter of the diesel in each delivery pipeline is different, in the embodiment of the present application, the first attenuation value corresponding to each delivery pipeline is determined by the flash point attenuation parameter of the diesel in each delivery pipeline, and the accuracy of the determined flash point attenuation value is high.

[0113] Exemplarily, the distance of each delivery pipeline and the diesel flash point attenuation parameter are stored in the computer device. After the delivery pipeline is determined, the first attenuation value of each delivery pipeline can be determined based on the stored distance of each delivery pipeline and the diesel flash point attenuation parameter.

[0114] In a possible implementation, the computer device detects the flash point decay parameter of the delivery pipeline before determining the first decay value of the diesel based on the distance of the delivery pipeline and the flash point decay parameter of the diesel. The steps include: after the computer device transports another batch of diesel through the delivery pipeline with gasoline tail oil, it detects the flash point value before and after transportation of the pure diesel oil; determines the difference between the flash point value before and after transportation as the total decay value of the pure diesel oil in the entire delivery pipeline; and determines the quotient of the total decay value and the pipeline length of the delivery pipeline as the flash point decay parameter of the diesel.

[0115] Among them, in the transportation pipeline, the diesel pure oil part is behind the diesel part mixed with gasoline tail oil. Due to the alternating transportation of gasoline and diesel, the diesel head part will be mixed with gasoline tail oil, but because the amount of diesel is much larger than the amount of tail oil, the diesel part behind will not be mixed with gasoline tail oil, so the diesel in the diesel part behind is still pure diesel.

[0116] In an embodiment of the present application, the flash point decay parameters of the diesel in the delivery pipeline are determined by the flash point value of the pure diesel part, so that the determined total decay value only includes the flash point decay value caused by the delivery pipeline itself, and does not include the flash point decay value caused by the mixing of gasoline tail oil. In this way, the influence of gasoline tail oil can be eliminated, so that the determined diesel flash point decay parameters are highly accurate, and thus the final determined diesel flash point decay value is highly accurate.

[0117] For example, since the flash point value of the diesel part mixed with gasoline tail oil is lower than the flash point value of the diesel pure oil part, the computer equipment can set a detection point at the tail end of the transmission pipeline, starting from the diesel head, and sequentially detect the flash point values ​​of multiple diesel parts passing through the detection point until the flash point value no longer increases. This flash point value is the flash point value of the diesel pure oil part after transportation. This method is simple and efficient.

[0118] It should be noted that the above method for determining the flash point decay parameters of diesel in the delivery pipeline is only an exemplary description of determining the flash point decay parameters of diesel. Of course, the flash point decay parameters of diesel can also be determined in other ways, for example, another batch of diesel is directly transported through the delivery pipeline without gasoline tail oil, the flash point value before transportation and the flash point value after transportation of the diesel are detected, and then the difference between the flash point value before transportation and the flash point value after transportation is determined as the total decay value of diesel in the entire delivery pipeline; the quotient of the total decay value and the pipeline length of the delivery pipeline is determined as the flash point decay parameter of diesel. The embodiments of the present application are not limited to this.

[0119] 203: The computer device determines the difference between the third flash point value of the diesel before transportation and the first attenuation value as the first flash point value.

[0120] The first flash point value refers to the first flash point value of diesel after being transported through a transportation pipeline when there is no gasoline tail oil in the transportation pipeline.

[0121] 204: The computer device determines a first volume ratio corresponding to a first flash point value according to a mapping relationship between a flash point value of diesel and a volume ratio of gasoline that is allowed to be mixed, wherein the first volume ratio represents a volume ratio of gasoline that is allowed to be mixed into diesel when no gasoline tail oil is mixed.

[0122] It should be noted that the volume ratio of gasoline blended into diesel in the embodiments of the present application refers to the ratio of the amount of gasoline blended into the total amount of gasoline and diesel after blending with gasoline. The volume ratio of gasoline allowed to be blended into diesel refers to the maximum permissible value of the ratio of the amount of gasoline blended into the total amount of gasoline and diesel after blending with gasoline.

[0123] In a possible implementation, the mapping relationship between the flash point value of diesel and the volume percentage of gasoline allowed to be blended includes the following formula (1).

[0124]

[0125] Among them, K g Indicates the volume percentage of gasoline allowed to be mixed into diesel, T S Indicates the actual flash point value of diesel, T S0 Indicates the minimum allowable flash point value of diesel.

[0126] Correspondingly, the computer device determines the first volume ratio corresponding to the first flash point value based on the mapping relationship between the flash point value of diesel and the volume ratio of gasoline allowed to be mixed in. The computer device substitutes the first flash point value into the formula as the actual flash point value, and calculates the first volume ratio corresponding to the first flash point value.

[0127] For example, the volume percentage is in the format of percentage. The flash point value is in the unit of ° C. For example, the minimum allowable flash point value of diesel is 60 ° C.

[0128] In another possible implementation, the mapping relationship between the flash point value of diesel and the volume percentage of gasoline allowed to be mixed is a mapping table between the flash point value of diesel and the volume percentage of gasoline allowed to be mixed, in which each flash point value of diesel corresponds to a volume percentage of gasoline allowed to be mixed, and accordingly, the computer device determines the first volume percentage corresponding to the first flash point value according to the mapping relationship between the flash point value of diesel and the volume percentage of gasoline allowed to be mixed in the following implementation: the computer device queries the mapping table according to the first flash point value to obtain the volume percentage of gasoline allowed to be mixed corresponding to the first flash point value. In this way, the time for calculating the volume percentage is saved, and the efficiency of determining the volume percentage can be improved.

[0129] 205: The computer device determines a second volume ratio based on the amount of gasoline tail oil and diesel oil in the transmission pipeline, where the second volume ratio represents the volume ratio of gasoline tail oil mixed with diesel.

[0130] Exemplarily, this step is implemented as follows: the computer device determines the sum of the amount of gasoline tail oil and the amount of diesel as the total oil amount, and determines the quotient of the amount of gasoline tail oil and the total oil amount as the second volume percentage.

[0131] Before determining the second volume percentage based on the amount of gasoline tail oil and diesel oil in the pipeline, the computer device must first determine the amount of gasoline tail oil in the pipeline. The implementation method includes the following steps (1)-(4).

[0132] (1) After the computer equipment transports another batch of diesel through a pipeline where gasoline tail oil exists, it determines a position range, and the position range represents the position where the gasoline tail oil is mixed into the diesel.

[0133] For example, starting from the diesel head, the diesel part within a distance of 1000 meters in the transmission pipeline is mixed with gasoline tail oil, so the position range is the diesel part within the 1000-meter distance.

[0134] Optionally, the implementation of this step is as follows: after the computer device transports another batch of diesel through a delivery pipeline with gasoline tail oil, starting from the diesel head, the diesel flash point values ​​of multiple diesel parts passing through the detection point are detected in sequence; if the diesel flash point value of the current diesel part is the same as the diesel flash point value of the previous diesel part, the range between the position of the diesel head and the position of the previous diesel part is determined as the position range. Optionally, the detection point is set at the tail of the delivery pipeline or other positions, and this application does not limit this.

[0135] Since the flash point value of the diesel part mixed with gasoline tail oil is lower than the flash point value of the pure diesel part, and the greater the amount of gasoline tail oil mixed, the lower the flash point value, therefore, starting from the diesel head, the flash point value of each diesel part mixed with gasoline tail oil in the diesel will gradually decrease until it reaches the pure diesel part, and the flash point value will no longer decrease. Therefore, if the diesel flash point value of the current diesel part is the same as the diesel flash point value of the previous diesel part, it means that the current diesel part and the previous diesel part are both pure diesel parts, and the range between the position of the diesel head and the position of the previous diesel part is the diesel part mixed with gasoline tail oil. Therefore, determining the position range by this method is scientific and accurate.

[0136] (2) The computer device determines the diesel quantity and the fourth volume ratio corresponding to multiple positions within the position range, and the fourth volume ratio represents the volume ratio of the gasoline tail oil actually mixed into the diesel part corresponding to the position.

[0137] In one possible implementation, the computer device determines the amount of diesel corresponding to multiple positions within a position range, including: the computer device determines the amount of diesel corresponding to the multiple positions based on the length of the delivery pipeline occupied by the diesel parts corresponding to the multiple positions and the diameter of the delivery pipeline.

[0138] In one possible implementation, the computer device determines a fourth volume share corresponding to multiple positions within the position range, including: the computer device determines a fifth volume share corresponding to the multiple positions according to the diesel flash point value and a mapping relationship of the diesel parts corresponding to the multiple positions within the position range, the fifth volume share indicating the volume share of gasoline allowed to be blended into the diesel parts corresponding to the positions; determines a sixth volume share according to the flash point value and a mapping relationship of the pure diesel oil part after transporting the other batch of diesel, the sixth volume share indicating the volume share of gasoline allowed to be blended into the pure diesel oil part; and determines the difference between the sixth volume share and the fifth volume share corresponding to the multiple positions as the fourth volume share corresponding to the multiple positions.

[0139] In the embodiment of the present application, since the fifth volume ratio represents the volume ratio of gasoline allowed to be mixed into the diesel part corresponding to the position, and the sixth volume ratio represents the volume ratio of gasoline allowed to be mixed into the pure diesel oil part, the difference between the sixth volume ratio and the fifth volume ratio is the volume ratio of gasoline tail oil actually mixed into the diesel part corresponding to the position, and the difference is determined as the fourth volume ratio corresponding to the position, which is scientific and accurate.

[0140] (3) The computer device determines the amount of gasoline tail oil mixed into the diesel part corresponding to each position based on the diesel amounts corresponding to the multiple positions and the fourth volume ratio.

[0141] After the computer device obtains the diesel quantity and the fourth volume proportion corresponding to each position, it determines the product of the diesel quantity corresponding to the position and the fourth volume proportion as the amount of gasoline tail oil mixed into the diesel part corresponding to the position.

[0142] (4) The computer device determines the sum of the amounts of gasoline tail oil mixed into the diesel parts corresponding to the multiple positions as the amount of gasoline tail oil existing in the transmission pipeline.

[0143] Optionally, after the computer device determines the amount of gasoline tail oil in the delivery pipeline, the amount of oil is stored, and when the amount of gasoline tail oil in the delivery pipeline is needed later, it can be directly obtained.

[0144] 206: The computer device determines the difference between the first volume ratio and the second volume ratio as a third volume ratio, where the third volume ratio represents the volume ratio of gasoline that is allowed to be mixed into the diesel after the gasoline tail oil is mixed.

[0145] Since the first volume percentage indicates the volume percentage of gasoline allowed to be mixed into diesel when no gasoline tail oil is mixed in, and the second volume percentage indicates the volume percentage of gasoline tail oil mixed into diesel, the difference between the first volume percentage and the second volume percentage is the volume percentage of gasoline allowed to be mixed into diesel after the gasoline tail oil is mixed in. This method of determining the volume percentage of gasoline allowed to be mixed into diesel after the gasoline tail oil is mixed in is scientific and accurate.

[0146] 207: The computer device determines a second flash point value corresponding to the third volume ratio according to the mapping relationship, where the second flash point value represents the flash point value of the diesel after being mixed with gasoline tail oil.

[0147] Since the mapping relationship is a mapping relationship between the flash point value of diesel and the volume percentage of gasoline allowed to be blended, and the third volume percentage represents the volume percentage of gasoline allowed to be blended into the diesel after blending with the gasoline tail oil, the third volume percentage can be mapped to the flash point value of the diesel after blending with the gasoline tail oil according to the mapping relationship.

[0148] 208: The computer device determines the difference between the third flash point value and the second flash point value of the diesel before transportation as the flash point decay value, and the flash point decay value represents the flash point decay value of the diesel after being transported through a pipeline with gasoline tail oil.

[0149] Since the second flash point value is determined based on the first flash point value, the first flash point value represents the first flash point value of diesel after being transported through the pipeline without the presence of gasoline tail oil in the pipeline, and the second flash point value represents the flash point value of diesel after being mixed with gasoline tail oil, therefore, the difference between the first flash point value and the second flash point value actually represents the flash point attenuation value caused by the mixing of gasoline tail oil, and the difference between the third flash point value and the first flash point value represents the flash point attenuation value caused by the transportation of pure diesel, that is, the flash point attenuation caused by the pipeline itself, therefore, the difference between the third flash point value and the second flash point value can represent the flash point attenuation value of diesel after being transported through the pipeline with gasoline tail oil. That is, the flash point attenuation value includes the flash point attenuation values ​​caused by two reasons.

[0150] Exemplarily, the method for determining the flash point decay value in the embodiment of the present application can be expressed by the following formula (2).

[0151] T=K*L+(T S -T S1 ) (2)

[0152] Where T represents the flash point decay value of diesel after being transported through a pipeline with gasoline tail oil, K represents the flash point decay parameter of diesel, L represents the distance of the pipeline, and T S It indicates the flash point value of diesel after being transported through the pipeline without the presence of gasoline tail oil in the pipeline, that is, the first flash point value mentioned above, T S1 It indicates the flash point value of diesel after being mixed with gasoline tail oil, that is, the second flash point value mentioned above.

[0153] Exemplarily, the unit of the flash point decay value is °C, the unit of the flash point decay parameter of diesel is °C / km, the unit of the distance of the transmission pipeline is km, and the unit of the flash point value is °C.

[0154] In one possible implementation, diesel has multiple delivery pipelines. In this case, the computer device determines the sum of the flash point decay values ​​corresponding to the multiple delivery pipelines as the total flash point decay value, and the total flash point decay value represents the flash point decay value of diesel after being transported through multiple delivery pipelines with gasoline tail oil. Among them, the flash point decay value corresponding to any delivery pipeline represents the flash point decay value of diesel after being transported through the delivery pipeline with gasoline tail oil. And the method for determining the flash point decay value corresponding to each delivery pipeline is similar. That is, in the case where diesel has multiple delivery pipelines, the computer device must determine the flash point decay value corresponding to each delivery pipeline through the above method, and then add the determined multiple flash point decay values ​​to obtain the total flash point decay value.

[0155] In the embodiment of the present application, considering that the flash point decay parameters of diesel fuel in different delivery pipelines are different, and the amount of gasoline tail oil in different delivery pipelines is also different, therefore, when determining the flash point decay value of diesel fuel, the flash point decay value of diesel fuel in each delivery pipeline will be determined according to the parameters of each delivery pipeline, so that the accuracy of the flash point decay value corresponding to each delivery pipeline can be guaranteed, and then the sum of the flash point decay values ​​corresponding to multiple delivery pipelines is determined as the total flash point decay value, thereby ensuring the accuracy of the total flash point decay value. In addition, since the method for determining the flash point decay value of diesel fuel provided in the embodiment of the present application can ensure the accuracy of the flash point decay value, therefore, the flash point margin of the diesel fuel to be transported in pipelines is determined according to the flash point decay value, that is, the difference between the flash point of the diesel fuel to be transported in pipelines and the specified minimum allowable flash point value of diesel fuel, so as to ensure that the flash point value of diesel fuel after pipeline transportation still meets the regulations.

[0156] The following is a specific application of the method for determining the flash point decay value of diesel:

[0157] The volume of a batch of diesel is 40000m 3 There are three diesel pipelines. The flash point decay values ​​of this batch of diesel on each pipeline are determined to be 0.9°C, 2.0°C and 2.6°C respectively by the method provided in the embodiment of this application. The total flash point decay value of this batch of diesel is 5.5°C. Downstream users require that the flash point value of the diesel received cannot be lower than 62°C. Therefore, the flash point requirement for this batch of diesel is not lower than 67.5°C. The flash point of diesel before on-site transportation is 69°C. After being transported through the pipeline, the flash point of diesel measured at the downstream user is 63.5 degrees. The difference is 5.5°C, which is consistent with the result determined by the method provided in this application, verifying the feasibility of this method.

[0158] The technical solution provided in the embodiment of the present application utilizes the mapping relationship between the flash point value of diesel and the volume percentage of gasoline allowed to be blended, and determines the flash point decay value of the diesel to be transported in a pipeline according to the amount of diesel oil to be transported in a pipeline and the flash point value, so that the accuracy of the determined flash point decay value can be guaranteed. In addition, when determining the flash point decay value of diesel, two reasons for the decay of the flash point value of diesel during the pipeline transportation process are taken into account: the decay of the flash point value caused by the transportation of pure diesel, and the decay of the flash point value caused by the blending of the gasoline tail oil in the transportation pipeline into the pure diesel. Therefore, the flash point value of the diesel after transportation is first determined in the case where there is no gasoline tail oil in the transportation pipeline, and then the flash point value of the diesel after blending with the gasoline tail oil is determined based on the flash point value, so that the flash point decay value finally determined includes both the flash point decay value caused by the transportation of pure diesel and the flash point decay value caused by the blending of the gasoline tail oil, and has high accuracy. Furthermore, when determining the flash point value of diesel after being mixed with gasoline tail oil, the volume percentage of gasoline allowed to be mixed in the diesel before being mixed with gasoline tail oil and the volume percentage of gasoline allowed to be mixed in the diesel after being mixed with gasoline tail oil are used to determine the volume percentage of gasoline that is still allowed to be mixed in the diesel after being mixed with gasoline tail oil. Then, using the mapping relationship between the flash point value of diesel and the volume percentage of gasoline allowed to be mixed, the volume percentage of gasoline that is still allowed to be mixed in the diesel after being mixed with gasoline tail oil is mapped to the flash point value of diesel after being mixed with gasoline tail oil. The method is scientific, and the determined flash point value of diesel after being mixed with gasoline tail oil has high accuracy, thereby ensuring the accuracy of the determined flash point attenuation value.

[0159] Figure 3 is a block diagram of a device for determining a flash point decay value of diesel provided in an embodiment of the present application. Figure 3 , the device comprises:

[0160] The delivery pipeline determination module 301 is configured to determine the amount of diesel and the delivery pipeline of diesel;

[0161] The first flash point determination module 302 is configured to determine a first flash point value of diesel after being transported through a transmission pipeline in the absence of gasoline tail oil in the transmission pipeline;

[0162] The first proportion determination module 303 is configured to determine a first volume proportion corresponding to the first flash point value according to a mapping relationship between the flash point value of diesel and the volume proportion of gasoline allowed to be mixed, wherein the first volume proportion indicates the volume proportion of gasoline allowed to be mixed into diesel when no gasoline tail oil is mixed;

[0163] The second proportion determination module 304 is configured to determine a second volume proportion based on the amount of gasoline tail oil and the amount of diesel oil in the transmission pipeline, wherein the second volume proportion indicates the volume proportion of gasoline tail oil mixed into diesel;

[0164] The third volume ratio determination module 305 is configured to determine the difference between the first volume ratio and the second volume ratio as a third volume ratio, wherein the third volume ratio indicates the volume ratio of gasoline that is allowed to be blended into the diesel after the gasoline tail oil is blended;

[0165] The second flash point determination module 306 is configured to determine a second flash point value corresponding to the third volume percentage according to the mapping relationship, where the second flash point value represents the flash point value of the diesel after being mixed with gasoline tail oil;

[0166] The flash point decay determination module 307 is configured to determine the difference between the third flash point value and the second flash point value of the diesel before transportation as the flash point decay value, which represents the flash point decay value of the diesel after being transported through a pipeline with gasoline tail oil.

[0167] In one possible implementation, the first flash point determination module 302 is configured to determine a first attenuation value of diesel based on the distance of the transmission pipeline and a diesel flash point attenuation parameter, where the diesel flash point attenuation parameter represents the attenuation value of the diesel flash point per unit distance when the diesel is transported through the transmission pipeline in the absence of gasoline tail oil in the transmission pipeline; and the difference between the third flash point value and the first attenuation value is determined as the first flash point value.

[0168] In another possible implementation, the first flash point determination module 302 is further configured to detect the flash point value before and after transportation of the pure diesel oil portion after transporting another batch of diesel through a delivery pipeline in which gasoline tail oil exists, wherein the pure diesel oil portion is located after the diesel portion mixed with gasoline tail oil in the delivery pipeline; determine the difference between the flash point value before and after transportation as the total attenuation value of the pure diesel oil portion in the entire delivery pipeline; and determine the quotient of the total attenuation value and the pipeline length of the delivery pipeline as the diesel flash point attenuation parameter.

[0169] In another possible implementation, the device further includes:

[0170] A position range determination module is configured to determine a position range after another batch of diesel is transported through a delivery pipeline where gasoline tail oil exists, wherein the position range indicates a position where gasoline tail oil is mixed into the diesel;

[0171] A fourth proportion determination module is configured to determine the diesel volume and a fourth volume proportion corresponding to a plurality of positions within the position range, wherein the fourth volume proportion indicates the volume proportion of the gasoline tail oil actually mixed into the diesel part corresponding to the position;

[0172] A first oil quantity determination module is configured to determine the oil quantity of gasoline tail oil mixed into the diesel part corresponding to each position according to the diesel quantity corresponding to the plurality of positions and the fourth volume ratio;

[0173] The second oil quantity determination module is configured to determine the sum of the oil quantities of gasoline tail oil mixed into the diesel parts corresponding to multiple positions as the oil quantity of gasoline tail oil existing in the transmission pipeline.

[0174] In another possible implementation, the position range determination module is configured to detect the diesel flash point values ​​of multiple diesel parts passing through the detection point in sequence, starting from the diesel head, after transporting another batch of diesel through a delivery pipeline with gasoline tail oil; if the diesel flash point value of the current diesel part is the same as the diesel flash point value of the previous diesel part, then the range between the position of the diesel head and the position of the previous diesel part is determined as the position range.

[0175] In another possible implementation, the fourth proportion determination module is configured to determine the fifth volume proportion corresponding to the multiple positions according to the diesel flash point value and the mapping relationship of the diesel parts corresponding to the multiple positions within the position range, the fifth volume proportion indicating the volume proportion of gasoline allowed to be blended into the diesel part corresponding to the position; determine the sixth volume proportion according to the flash point value and the mapping relationship of the pure oil part of diesel after transporting another batch of diesel, the sixth volume proportion indicating the volume proportion of gasoline allowed to be blended into the pure oil part of diesel; and determine the difference between the sixth volume proportion and the fifth volume proportion corresponding to the multiple positions as the fourth volume proportion corresponding to the multiple positions.

[0176] In another possible implementation, the mapping relationship between the flash point value of diesel and the volume percentage of gasoline allowed to be blended includes:

[0177]

[0178] Among them, K g Indicates the volume percentage of gasoline allowed to be mixed into diesel, T S Indicates the actual flash point value of diesel, T S0 Indicates the minimum allowable flash point value of diesel.

[0179] In another possible implementation, the flash point decay determination module 307 is further configured to determine the total flash point decay value as the sum of the flash point decay values ​​corresponding to the multiple delivery pipelines when the diesel has multiple delivery pipelines. The total flash point decay value represents the flash point decay value of the diesel after being transported through multiple delivery pipelines with gasoline tail oil.

[0180] The technical solution provided in the embodiment of the present application utilizes the mapping relationship between the flash point value of diesel and the volume percentage of gasoline allowed to be blended, and determines the flash point decay value of the diesel to be transported in a pipeline according to the amount of diesel oil to be transported in a pipeline and the flash point value, so that the accuracy of the determined flash point decay value can be guaranteed. In addition, when determining the flash point decay value of diesel, two reasons for the decay of the flash point value of diesel during the pipeline transportation process are taken into account: the decay of the flash point value caused by the transportation of pure diesel, and the decay of the flash point value caused by the blending of the gasoline tail oil in the transportation pipeline into the pure diesel. Therefore, the flash point value of the diesel after transportation is first determined in the case where there is no gasoline tail oil in the transportation pipeline, and then the flash point value of the diesel after blending with the gasoline tail oil is determined based on the flash point value, so that the flash point decay value finally determined includes both the flash point decay value caused by the transportation of pure diesel and the flash point decay value caused by the blending of the gasoline tail oil, and has high accuracy. Furthermore, when determining the flash point value of diesel after being mixed with gasoline tail oil, the volume percentage of gasoline allowed to be mixed in the diesel before being mixed with gasoline tail oil and the volume percentage of gasoline allowed to be mixed in the diesel after being mixed with gasoline tail oil are used to determine the volume percentage of gasoline that is still allowed to be mixed in the diesel after being mixed with gasoline tail oil. Then, using the mapping relationship between the flash point value of diesel and the volume percentage of gasoline allowed to be mixed, the volume percentage of gasoline that is still allowed to be mixed in the diesel after being mixed with gasoline tail oil is mapped to the flash point value of diesel after being mixed with gasoline tail oil. The method is scientific, and the determined flash point value of diesel after being mixed with gasoline tail oil has high accuracy, thereby ensuring the accuracy of the determined flash point attenuation value.

[0181] It should be noted that: the device for determining the flash point attenuation value of diesel provided in the above embodiment only uses the division of the above functional modules as an example to illustrate when determining the flash point attenuation value of diesel. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device for determining the flash point attenuation value of diesel is divided into different functional modules to complete all or part of the functions described above. In addition, the device for determining the flash point attenuation value of diesel provided in the above embodiment and the method for determining the flash point attenuation value of diesel belong to the same concept. The specific implementation process is detailed in the method embodiment and will not be repeated here.

[0182] A person skilled in the art will understand that all or part of the steps to implement the above embodiments may be accomplished by hardware or by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a disk or an optical disk, etc.

[0183] The above description is only an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A method for determining the flash point decay value of diesel, characterized in that: The method comprises: Determining the amount of diesel and a delivery pipeline for the diesel; Determine a first flash point value of the diesel after being transported through the delivery pipeline in the absence of gasoline tail oil in the delivery pipeline; Determine, according to a mapping relationship between a flash point value of diesel and a volume percentage of gasoline allowed to be blended, a first volume percentage corresponding to the first flash point value, wherein the first volume percentage represents a volume percentage of gasoline allowed to be blended into the diesel when the gasoline tail oil is not blended; Based on the amount of the gasoline tail oil and the amount of the diesel oil in the delivery pipeline, determining a second volume percentage, wherein the second volume percentage represents the volume percentage of the gasoline tail oil mixed into the diesel oil; The difference between the first volume percentage and the second volume percentage is determined as a third volume percentage, wherein the third volume percentage represents the volume percentage of gasoline that is allowed to be blended into the diesel after the gasoline tail oil is blended; According to the mapping relationship, determining a second flash point value corresponding to the third volume percentage, wherein the second flash point value represents the flash point value of the diesel after being mixed with the gasoline tail oil; The difference between the third flash point value and the second flash point value of the diesel before transportation is determined as the flash point decay value, and the flash point decay value represents the flash point decay value of the diesel after being transported through the transmission pipeline in which the gasoline tail oil exists.

2. The method according to claim 1, characterized in that The determining of the first flash point value of the diesel after being transported through the delivery pipeline when there is no gasoline tail oil in the delivery pipeline comprises: Determine a first attenuation value of the diesel based on the distance of the delivery pipeline and a diesel flash point attenuation parameter, wherein the diesel flash point attenuation parameter represents an attenuation value of the diesel flash point per unit distance when the diesel is transported through the delivery pipeline in the absence of the gasoline tail oil in the delivery pipeline; The difference between the third flash point value and the first attenuation value is determined as the first flash point value.

3. The method according to claim 2, characterized in that Before determining the first attenuation value of the diesel based on the distance of the delivery pipeline and the flash point attenuation parameter of the diesel, the method further includes: After transporting another batch of diesel through the delivery pipeline in which the gasoline tail oil exists, detecting the flash point value before and after transportation of the pure diesel oil portion, wherein the pure diesel oil portion is located after the diesel portion mixed with the gasoline tail oil in the delivery pipeline; The difference between the flash point value before transportation and the flash point value after transportation is determined as the total attenuation value of the pure diesel oil portion in the entire transportation pipeline; The quotient of the total attenuation value and the pipeline length of the transport pipeline is determined as the diesel flash point attenuation parameter.

4. The method according to claim 1, characterized in that: Before determining the second volume proportion based on the amount of gasoline tail oil and the amount of diesel oil in the delivery pipeline, the method further includes: After transporting another batch of diesel through the delivery pipeline where the gasoline tail oil exists, determining a position range, the position range indicating the position where the gasoline tail oil is mixed into the diesel; Determine the diesel amount and a fourth volume ratio corresponding to a plurality of positions within the position range, wherein the fourth volume ratio represents the volume ratio of the gasoline tail oil actually mixed into the diesel portion corresponding to the position; Determining the amount of the gasoline tail oil mixed into the diesel part corresponding to each position according to the diesel amounts corresponding to the multiple positions and the fourth volume proportion; The sum of the amounts of the gasoline tail oil mixed into the diesel parts corresponding to the multiple positions is determined as the amount of the gasoline tail oil present in the delivery pipeline.

5. The method according to claim 4, characterized in that After transporting another batch of diesel through the delivery pipeline where the gasoline tail oil exists, determining the location range includes: After transporting the other batch of diesel through the delivery pipeline where the gasoline tail oil exists, starting from the diesel head, sequentially detecting the flash point values ​​of multiple diesel parts passing through the detection point; If the diesel flash point value of the current diesel portion is the same as the diesel flash point value of the previous diesel portion, the range between the position of the diesel head and the position of the previous diesel portion is determined as the position range.

6. The method according to claim 4, characterized in that The determining of the diesel quantity and the fourth volume ratio corresponding to the plurality of positions within the position range comprises: According to the diesel flash point values ​​of the diesel parts corresponding to the multiple positions within the position range and the mapping relationship, determining the fifth volume proportions corresponding to the multiple positions, wherein the fifth volume proportion represents the volume proportion of gasoline allowed to be blended in the diesel parts corresponding to the positions; Determine a sixth volume percentage according to the flash point value of the pure diesel oil portion after transporting the other batch of diesel and the mapping relationship, wherein the sixth volume percentage represents the volume percentage of gasoline allowed to be blended into the pure diesel oil portion; A difference between the sixth volume proportion and the fifth volume proportion corresponding to the multiple positions is determined as a fourth volume proportion corresponding to the multiple positions.

7. The method according to claim 1, characterized in that The mapping relationship between the flash point value of diesel and the volume percentage of gasoline allowed to be blended includes: Among them, K g Indicates the volume percentage of gasoline allowed to be mixed into diesel, T s Indicates the actual flash point value of the diesel, T S0 Indicates the minimum allowable flash point value of diesel.

8. The method according to claim 1, characterized in that The method further comprises: In the case where the diesel has multiple delivery pipelines, the sum of the flash point decay values ​​corresponding to the multiple delivery pipelines is determined as the total flash point decay value, and the total flash point decay value represents the flash point decay value of the diesel after being transported through the multiple delivery pipelines where the gasoline tail oil exists.

9. A device for determining the flash point decay value of diesel, characterized in that: The device comprises: A delivery pipeline determination module, configured to determine the amount of diesel and a delivery pipeline for the diesel; A first flash point determination module is configured to determine a first flash point value of the diesel after being transported through the delivery pipeline in the absence of gasoline tail oil in the delivery pipeline; A first proportion determination module is configured to determine a first volume proportion corresponding to the first flash point value according to a mapping relationship between the flash point value of diesel and the volume proportion of gasoline allowed to be mixed, wherein the first volume proportion represents the volume proportion of gasoline allowed to be mixed into the diesel when the gasoline tail oil is not mixed; A second proportion determination module is configured to determine a second volume proportion based on the amount of gasoline tail oil and the amount of diesel oil in the delivery pipeline, wherein the second volume proportion indicates the volume proportion of the gasoline tail oil mixed into the diesel; A third volume ratio determination module is configured to determine the difference between the first volume ratio and the second volume ratio as a third volume ratio, wherein the third volume ratio represents the volume ratio of gasoline that is allowed to be blended into the diesel after the gasoline tail oil is blended; A second flash point determination module is configured to determine a second flash point value corresponding to the third volume percentage according to the mapping relationship, wherein the second flash point value represents the flash point value of the diesel after being mixed with the gasoline tail oil; The flash point decay determination module is configured to determine the difference between the third flash point value of the diesel before transportation and the second flash point value as a flash point decay value, wherein the flash point decay value represents the flash point decay value of the diesel after being transported through the transmission pipeline where the gasoline tail oil exists.

10. The device according to claim 9, characterized in that The first flash point determination module is configured to determine a first attenuation value of the diesel based on the distance of the transport pipeline and a diesel flash point attenuation parameter, wherein the diesel flash point attenuation parameter represents an attenuation value of the diesel flash point per unit distance when the diesel is transported through the transport pipeline in the absence of the gasoline tail oil in the transport pipeline; and determine a difference between the third flash point value and the first attenuation value as the first flash point value.

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