CN115325459B

CN115325459B - Cutting method and device for sequential conveying of aviation kerosene and gasoline and electronic equipment

Info

Publication number: CN115325459B
Application number: CN202110503120.3A
Authority: CN
Inventors: 王佩弦; 丁凯; 王晓司; 李遵照; 李明一
Original assignee: Sinopec Dalian Petrochemical Research Institute Co ltd; China Petroleum and Chemical Corp
Current assignee: Sinopec Dalian Petrochemical Research Institute Co ltd; China Petroleum and Chemical Corp
Priority date: 2021-05-10
Filing date: 2021-05-10
Publication date: 2024-09-03
Anticipated expiration: 2041-05-10
Also published as: CN115325459A

Abstract

The invention discloses a cutting method, a cutting device and electronic equipment for sequentially conveying aviation kerosene and gasoline, wherein the method comprises the following steps: determining the most sensitive index of the aviation kerosene as chromaticity through a blending test of the aviation kerosene and the gasoline, and determining the maximum mass fraction of the blended gasoline in the aviation kerosene as x ₁ according to the chromaticity of the most sensitive index of the aviation kerosene; determining the most sensitive index of the gasoline as a distillation range through a blending test of the gasoline and the aviation kerosene, and determining the maximum mass fraction of the allowed blended aviation kerosene in the gasoline as y ₁ according to the distillation range of the most sensitive index of the gasoline; and respectively taking x ₁ and y ₁ as two critical points of oil cutting, and taking the two critical points and 50% mass fraction of the middle oil mixing section as important cutting indexes to cut the aviation kerosene and gasoline sequential conveying oil mixing section. The invention can accurately cut the aviation kerosene and gasoline mixing section, divide according to the mass fraction of the aviation kerosene and gasoline, fully utilize the quality potential of the two oils, facilitate the next oil treatment and utilization, and ensure that the pipe transportation quality meets the standard requirement.

Description

Cutting method and device for sequential conveying of aviation kerosene and gasoline and electronic equipment

Technical Field

The invention relates to the field of oil gas storage and transportation pipeline transportation, in particular to a cutting method and device for sequentially transporting aviation kerosene and gasoline and electronic equipment.

Background

Aviation kerosene is one of petroleum products, and is transparent liquid prepared by blending components such as straight-run distillate, hydrocracking, hydrofining and the like and necessary additives. Aviation kerosene is mainly used as fuel of aviation turbine engines, and as one of three main product oils, the oil is divided into aviation kerosene and kerosene for lamps, wherein aviation kerosene is a main variety of kerosene, and the aviation kerosene accounts for about 95% of the yield of kerosene at present.

Because the profitability of aviation kerosene is far more than that of common gasoline, diesel oil and other products. In recent years, the aviation kerosene device is used for the internal refinery to fight for aviation kerosene, or the aviation kerosene is increased by means of measures such as reconstruction, extension, operation optimization and the like. The production capacity of aviation kerosene per year of China petrochemical industry is more than 2000 ten thousand tons, and accounts for about 70% of the aviation kerosene production market. The mass production of aviation kerosene is in urgent need that the aviation kerosene is added into a finished product oil pipeline for sequential conveying.

For the sequential transportation of long-distance pipelines of thousands of kilometers, the quantity of generated mixed oil is huge under the combined action of convection diffusion and turbulent flow diffusion. The mode of treating the mixed oil mainly comprises blending treatment, topping treatment (separating different oil products by distillation) and refinery recycling treatment. The blending treatment is the most commonly used oil mixing treatment mode, which is to cut a small amount of mixed oil at the head and tail of the mixed oil into a front and rear oil storage tank directly according to a certain proportion, and naturally blend the mixed oil by means of the pure oil which is input subsequently. The efficient blending is based on an accurate oil cutting technology, and a reasonable cutting mode can improve the quality index of the conveyed oil and reduce the pipe conveying cost.

At present, the domestic finished oil pipeline is mainly used for conveying gasoline and diesel oil in sequence, the generated oil mixing section is generally cut into three sections according to a proportion, the oil mixing head and the oil mixing tail are cut into storage tanks of two pure oil products, and the middle section is used as a section to be treated to enter the oil mixing tank. The cutting method is relatively conservative, the cutting amount of the mixed oil is large, and the quality index of the blended oil product cannot be ensured to be qualified. In addition, no related research exists at present on the cutting mode of the aviation kerosene and gasoline sequential conveying oil mixing section.

Disclosure of Invention

Aiming at the problems existing in the prior art, the embodiment of the invention provides a cutting method, a cutting device and electronic equipment for sequentially conveying aviation kerosene and gasoline.

Specifically, the embodiment of the invention provides the following technical scheme:

in a first aspect, an embodiment of the present invention provides a method for cutting sequential delivery of aviation kerosene and gasoline, where the method is used for cutting sequential delivery of aviation kerosene and gasoline with a density difference smaller than a preset threshold, and includes:

Determining the most sensitive index of the aviation kerosene as chromaticity through a blending test of the aviation kerosene and the gasoline, and determining the maximum mass fraction of the blended gasoline in the aviation kerosene as x ₁ according to the chromaticity of the most sensitive index of the aviation kerosene;

Determining the most sensitive index of the gasoline as a distillation range through a blending test of the gasoline and the aviation kerosene, and determining the maximum mass fraction of the allowed blended aviation kerosene in the gasoline as y ₁ according to the distillation range of the most sensitive index of the gasoline;

And respectively taking x ₁ and y ₁ as two critical points of oil cutting, and taking the two critical points and 50% mass fraction of the middle oil mixing section as important cutting indexes to cut the aviation kerosene and gasoline sequential conveying oil mixing section.

Further, x ₁ and y ₁ are respectively used as two critical points of oil cutting, the middle oil mixing section takes the two critical points and 50% mass fraction as important cutting indexes, so that the cutting of the aviation kerosene and gasoline sequential conveying oil mixing section is carried out, and the method specifically comprises the following steps:

for mixed oil generated in the conveying process of sequentially conveying aviation kerosene and gasoline, the length and the position of a mixed oil section are monitored in real time along the way by using an online densimeter, and the mass fraction of the conveyed oil product is calculated by using the online densimeter at a terminal cutting section;

According to the mass fraction of the transported oil, x ₁ and y ₁ are respectively used as two critical points for cutting the oil, and the middle oil mixing section uses the two critical points and 50% mass fraction as important cutting indexes, so that the cutting of the aviation kerosene and gasoline sequential transport oil mixing section is carried out.

Further, the mass fraction of the delivered oil product is calculated in the end point cutting section by using an on-line densitometer, and the method specifically comprises the following steps:

Calculating the oil quality fraction of the forward oil at the current moment according to the oil density of the end-point section of the pipeline and the relation model; wherein the relation model is c= (ρ - ρ _B)/(ρ_A-ρ_B);

wherein c represents the oil quality fraction of the forward oil at the current moment, ρ represents the oil density of the cross section passing through the end point of the pipeline, ρ _A represents the oil density of the forward oil, and ρ _B represents the oil density of the backward oil.

Further, according to the mass fraction of the transported oil product, x ₁ and y ₁ are respectively used as two critical points for cutting the oil product, the middle oil mixing section uses the two critical points and 50% mass fraction as important cutting indexes, so as to cut the oil mixing section for transporting aviation kerosene and gasoline sequentially, and the method specifically comprises the following steps:

If the oil mass fraction c of the forward oil product at the current moment meets the first condition (1-x ₁) to 100%, controlling the oil product to enter an oil tank of the oil product A; the oil product A is aviation kerosene;

If the oil mass fraction c of the forward oil at the current moment meets a second condition (1-2 x ₁)/4～(1-x₁), controlling the oil to enter an oil tank doped with the low-mass fraction oil B for the subsequent blending of the high-quality oil A; the oil B is gasoline;

If the oil mass fraction c of the forward oil at the current moment meets the third condition of 50% -1-2 x ₁)/4, controlling the oil to enter an oil tank doped with the oil B with high mass fraction for the subsequent blending of the low-quality oil A;

If the oil mass fraction c of the forward oil product at the current moment meets the fourth condition (1-2 y ₁)/4-50%, controlling the oil product to enter an oil tank doped with the oil product A with high mass fraction for the subsequent blending of the low-quality oil product B;

If the oil quality fraction c of the forward oil at the current moment meets the fifth condition y ₁～(1-2y₁)/4, controlling the oil to enter an oil tank doped with the low-quality fraction oil A for the subsequent blending of the high-quality oil B;

And if the oil mass fraction c of the forward oil product at the current moment meets the sixth condition of 0-y ₁, controlling the oil product to enter the oil tank of the oil product B.

In a second aspect, an embodiment of the present invention further provides a cutting device for sequentially conveying aviation kerosene and gasoline, where the cutting device is used for sequentially conveying aviation kerosene and gasoline with a density difference smaller than a preset threshold, and the cutting device includes:

The first determining module is used for determining the most sensitive index of the aviation kerosene as chromaticity through a blending test of the aviation kerosene and the gasoline, and determining the maximum mass fraction of the blended gasoline in the aviation kerosene as x ₁ according to the chromaticity of the most sensitive index of the aviation kerosene;

The second determining module is used for determining that the most sensitive index of the gasoline is a distillation range through a blending test of the gasoline and the aviation kerosene, and determining that the maximum mass fraction of the allowed blending aviation kerosene in the gasoline is y ₁ according to the distillation range of the most sensitive index of the gasoline;

And the cutting module is used for respectively taking x ₁ and y ₁ as two critical points for oil cutting, and the middle oil mixing section takes the two critical points and 50% mass fraction as important cutting indexes so as to cut the aviation kerosene and gasoline sequential conveying oil mixing section.

Further, the cutting module is specifically configured to:

For mixed oil generated in the conveying process of sequentially conveying aviation kerosene and gasoline, monitoring the length and the position of a mixed oil section in real time along the way by using an online densimeter, and calculating the mass fraction of the conveyed oil product by using the online densimeter at a terminal cutting section;

Further, when the cutting module calculates the mass fraction of the transported oil product by using an online densitometer in the end cutting section, the cutting module is specifically configured to:

Further, when the cutting module uses x ₁ and y ₁ as two critical points for cutting the oil product according to the mass fraction of the transported oil product, and the middle oil mixing section uses the two critical points and 50% mass fraction as important cutting indexes, the cutting module is specifically used for cutting the aviation kerosene and gasoline sequential transport oil mixing section:

In a third aspect, an embodiment of the present invention further provides an electronic device, including a memory, a processor, and a computer program stored on the memory and capable of running on the processor, where the processor implements the cutting method for sequentially conveying aviation kerosene and gasoline according to the first aspect when the processor executes the computer program.

In a fourth aspect, embodiments of the present invention also provide a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements a method of cutting a sequential delivery of aviation kerosene and gasoline according to the first aspect.

According to the cutting method, the cutting device and the electronic equipment for sequentially conveying aviation kerosene and gasoline provided by the embodiment of the invention, for the sequentially conveyed aviation kerosene and gasoline, the most sensitive index of the aviation kerosene is determined to be chromaticity through a blending test of the aviation kerosene and the gasoline, and the maximum mass fraction of the blended gasoline in the aviation kerosene is determined to be x ₁ according to the chromaticity of the most sensitive index of the aviation kerosene; determining the most sensitive index of the gasoline as a distillation range through a blending test of the gasoline and the aviation kerosene, and determining the maximum mass fraction of the allowed blended aviation kerosene in the gasoline as y ₁ according to the distillation range of the most sensitive index of the gasoline; and respectively taking x ₁ and y ₁ as two critical points of oil cutting, and taking the two critical points and 50% mass fraction of the middle oil mixing section as important cutting indexes to cut the aviation kerosene and gasoline sequential conveying oil mixing section. Therefore, the invention fully utilizes the quality potential of the pipe-conveyed oil product, and performs refined oil product cutting, and the invention can accurately cut the aviation kerosene and gasoline mixed oil section, thereby ensuring that the quality of the aviation kerosene after pipe conveying meets the standard requirements and further improving the economic benefit of pipe conveying.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings that are necessary for the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention and that other drawings can be obtained from these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a flow chart of a cutting method for sequentially conveying aviation kerosene and gasoline according to an embodiment of the invention;

FIG. 2 is a schematic diagram of a cutting principle of sequential transportation of aviation kerosene and gasoline according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a cutting device for sequentially conveying aviation kerosene and gasoline according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of a cutting system for sequentially conveying aviation kerosene and gasoline according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.

Detailed Description

The following describes the embodiments of the present invention further with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present invention, and are not intended to limit the scope of the present invention.

In the invention, in order to fully utilize the quality potential of the pipe-conveyed oil product and perfect the sequential conveying cutting theory after the aviation kerosene is conveyed, it is necessary to invent a cutting method which can accurately cut the aviation kerosene mixing section, fully utilize the aviation kerosene quality potential, ensure that the aviation kerosene quality after pipe conveying meets the standard requirement and improve the economic benefit of pipe conveying.

Fig. 1 shows a flowchart of a method for cutting sequential delivery of aviation kerosene and gasoline according to an embodiment of the present invention, as shown in fig. 1, where the method for cutting sequential delivery of aviation kerosene and gasoline according to an embodiment of the present invention is used for cutting sequential delivery of aviation kerosene and gasoline with a density difference smaller than a preset threshold, and specifically includes the following:

Step 101: determining the most sensitive index of the aviation kerosene as chromaticity through a blending test of the aviation kerosene and the gasoline, and determining the maximum mass fraction of the blended gasoline in the aviation kerosene as x ₁ according to the chromaticity of the most sensitive index of the aviation kerosene;

step 102: determining the most sensitive index of the gasoline as a distillation range through a blending test of the gasoline and the aviation kerosene, and determining the maximum mass fraction of the allowed blended aviation kerosene in the gasoline as y ₁ according to the distillation range of the most sensitive index of the gasoline;

Step 103: and respectively taking x ₁ and y ₁ as two critical points of oil cutting, and taking the two critical points and 50% mass fraction of the middle oil mixing section as important cutting indexes to cut the aviation kerosene and gasoline sequential conveying oil mixing section.

In this embodiment, it should be noted that the cutting method provided in this embodiment is based on quality control indexes and test methods specified in GB 6537-2018 "No. 3 jet fuel" and GB 17930-2016 "motor gasoline", a blending test of aviation kerosene and gasoline is performed, and the most sensitive quality index of aviation kerosene and gasoline is determined, and this quality index is used as a cutting basis.

GB 6537-2018 jet fuel No. 3 prescribes that the quality indexes of aviation kerosene mainly comprise freezing point, distillation range, density, chromaticity, actual colloid and the like. The process for determining the most sensitive index of aviation kerosene by blending test of aviation kerosene and gasoline is as follows:

① According to Gb 6537-2018, the aviation kerosene freezing point is not higher than 47 ℃. The blending test data of aviation kerosene and gasoline are analyzed, and the mass fraction of the aviation kerosene and the blending gasoline meets the linear relation, namely

z＝ax+b

Wherein z- - -the freezing point of aviation kerosene; x- -the mass fraction of blended gasoline; a. b- -a constant, and a is less than 0;

After gasoline is doped, the freezing point of aviation kerosene is always lower than the requirements of national standards on the freezing point of aviation kerosene, so the freezing point is not a sensitive index.

② According to Gb 6537-2018, the temperature of the 10% distillation of aviation kerosene is not higher than 205 ℃, the temperature of the 50% distillation is not higher than 232 ℃, and the temperature of the final distillation point is not higher than 300 ℃. With the continuous improvement of the blending mass fraction of the gasoline, the distillation temperature of the aviation kerosene is kept unchanged or slightly reduced. Wherein, the 10 percent distillation temperature of aviation kerosene and the blending mass fraction of gasoline satisfy the linear relation, namely

z＝ax+b

Wherein z- - -the temperature at which aviation kerosene is distilled 10%; x- -the mass fraction of blended gasoline; a. b- -a constant, and a is less than 0;

after gasoline is doped, the distillation range of aviation kerosene is always lower than the national standard, so that the distillation range is not a sensitive index.

③ According to Gb 6537-2018, the chroma of aviation kerosene is not less than 25 degrees. Along with the continuous improvement of the blending mass fraction of the gasoline, the chroma of aviation kerosene can be continuously reduced. Fitting by blending test data to obtain the product meeting the quadratic relation, namely

z＝ax²+bx+c

Wherein z- - -avionics; x- -the mass fraction of blended gasoline; a. b, c- - -a constant and a is greater than 0;

when the mass fraction of the blended gasoline reaches x ₁, the chroma of the aviation kerosene is set to be smaller than 25 degrees, and the aviation kerosene does not meet the index requirement any more.

④ According to Gb 6537-2018, the density index of aviation kerosene at 20 ℃ is 775-830kg/m ³, and the density of gasoline (92 is exemplified) at 20 ℃ is 720-775kg/m ³, so as the mass fraction of gasoline is continuously increased, the density of aviation kerosene is continuously reduced until the density index is lower than the lower limit. As known from the fitting of blending test data of aviation kerosene and gasoline, the mass fraction of the aviation kerosene and the blended gasoline satisfies a linear relation, and the relation is that

z＝ax+b

Wherein z- - -aviation kerosene density; x- -the mass fraction of blended gasoline; a. b- -a constant, and a is less than 0;

When the mass fraction of the blended gasoline reaches x ₂, the density of the aviation kerosene is set to be smaller than 775kg/m ³, and the aviation kerosene does not meet the index requirement any more.

⑤ According to Gb 6537-2018, the aviation kerosene colloid content is not more than 7mg/100mL. According to the analysis of blending test data, after gasoline is blended, the actual colloid of aviation kerosene is always lower than the requirement of national standards on colloid content, so that the actual colloid is not a sensitive index.

Comparing the mass fraction x ₁、x₂ of the blended gasoline under different conditions, it can be known that the mass fraction x ₁ of the blended gasoline is the smallest, so that the chromaticity of aviation kerosene can be determined as the most sensitive index when the gasoline is conveyed sequentially.

In addition, GB 17930-2016 "motor gasoline" specifies that the quality index of gasoline mainly comprises the value of sulfur octane, distillation range, actual gum, sulfur content, density and the like. Similarly, according to a blending test of gasoline and aviation kerosene, the final distillation point of the gasoline is known to be the most sensitive index, and the mass fraction critical value of the blended aviation kerosene is set to be y ₁.

The method comprises the steps of determining the most sensitive index of aviation kerosene as chromaticity through a blending test of the aviation kerosene and gasoline, and determining the maximum mass fraction of the blended gasoline in the aviation kerosene as x ₁; and determining that the most sensitive index of the gasoline is a distillation range through a blending test of the gasoline and the aviation kerosene, and enabling the maximum mass fraction of the blended aviation kerosene to be y ₁. And respectively taking x ₁ and y ₁ as two critical points of oil cutting, wherein the middle oil mixing section takes the two critical points and 50% mass fraction (which refers to the mass fraction of the forward oil in the oil mixing section) as important cutting indexes, and the two critical points and the 50% mass fraction are taken as a cutting method for sequentially conveying the aviation kerosene and the gasoline.

In the embodiment, the blending test of the aviation kerosene and the gasoline is used for determining that the most sensitive index of the aviation kerosene is chromaticity, and then the maximum mass fraction of the allowable blended gasoline in the aviation kerosene is x ₁ according to the chromaticity of the most sensitive index of the aviation kerosene, meanwhile, the blending test of the gasoline and the aviation kerosene is used for determining that the most sensitive index of the gasoline is distillation range, and then the maximum mass fraction of the allowable blended aviation kerosene in the gasoline is y ₁ according to the distillation range of the most sensitive index of the gasoline, and then the maximum mass fraction of the allowable blended gasoline in the aviation kerosene is x ₁ according to the distillation range of the most sensitive index of the gasoline, and the maximum mass fraction of the allowable blended aviation kerosene in the gasoline is y ₁, so that the accurate segmentation of the mixed oil section can be realized. Therefore, the cutting theory research of the aviation kerosene and gasoline sequential conveying oil mixing section is perfected, the aviation kerosene and gasoline oil mixing section is accurately cut, the quality potential of the aviation kerosene is fully utilized, the quality of the aviation kerosene after pipe conveying is ensured to meet the standard requirement, and the pipe conveying economic benefit is improved.

In the embodiment, aviation kerosene and gasoline are sequentially conveyed to generate mixed oil in the conveying process, the length and the position of a mixed oil section are monitored in real time along the way by using an on-line densimeter, and the mass fraction of an oil product is reversely calculated and conveyed by using the on-line densimeter in a terminal cutting section: assume that the forward oil and the backward oil are oil A and oil B, respectively. Given that the density of aviation kerosene (set as oil A) is ρ _A, the density of gasoline (set as oil B) is ρ _B, the mass fraction of the forward oil A in the section where the end point cutting section is located is c, when the density of the oil measured by the on-line densimeter is ρ, the following relationship is satisfied:

ρ＝cρ_A+(1-c)ρ_B

thereby, can obtain:

c＝(ρ-ρ_B)/(ρ_A-ρ_B)

In this embodiment, after the mass fraction of the oil product a is calculated by the online densitometer, as shown in fig. 2, the opening of the electric valve is controlled by the communication cable, when the mass fraction of the oil product a is (1-x₁)～100％、(1-2x₁)/4～(1-x₁)、50％～(1-2x₁)/4、(1-2y₁)/4～50％、y₁～(1-2y₁)/4、0％～y₁, as shown in fig. 4, different electric valves are correspondingly opened to control the oil product to enter different oil mixing tanks, so as to obtain the oil product a tank, the oil tank doped with the oil product B with low mass fraction, the oil tank doped with the oil product B with high mass fraction, the oil tank doped with the oil product a with low mass fraction, and the oil product B tank respectively. The six oil tanks are divided according to the mass fraction of the oil A, B, so that the mass potential of the two oil products can be fully utilized, and the next oil product treatment and utilization are facilitated.

It should be noted that, the aviation kerosene has a high-low quality division, and the gasoline also has a high-low quality division of 92/95/98, so in this embodiment, by setting 50% of nodes, and then dividing y ₁ -50% into 2 sections, the first half section is used for blending high-quality gasoline (because the aviation kerosene quality fraction in gasoline is small), and the second half section is used for blending low-quality gasoline (the aviation kerosene quality fraction in gasoline is large). Similarly, the second half 50% - (1-x ₁) is also divided into 2 sections for blending high-quality aviation kerosene and low-quality aviation kerosene, so that it can be seen that the embodiment fully utilizes the quality potential of two kinds of oil products, divides the oil products according to the mass fraction of the oil products A, B, and makes finer division between 50% - (1-x ₁) and y ₁ -50% by setting 50% of nodes, so that not only can the precise division of the oil mixing section be obtained, but also the high-quality aviation kerosene and gasoline with high-quality and low-quality aviation kerosene can be further obtained, thereby facilitating the processing and utilization of the oil products in the next step. For example, in this embodiment, the oil in the oil tank blended with the high-quality fraction oil a may be 92 gasoline, the oil in the oil tank blended with the low-quality fraction oil a may be 95 gasoline or 98 gasoline, and the oil in the oil tank B may be pure gasoline or 98 gasoline.

The cutting method for sequentially conveying the aviation kerosene and the gasoline, provided by the embodiment, perfects the cutting theoretical research of the aviation kerosene and the gasoline sequential conveying oil mixing section, accurately cuts the aviation kerosene and the gasoline oil mixing section, fully utilizes the quality potential of the aviation kerosene, ensures that the quality of the aviation kerosene after pipe conveying meets the standard requirement, and improves the economic benefit of pipe conveying.

It can be seen that in this embodiment, firstly, the sequentially conveyed aviation kerosene and gasoline are sampled, blending tests of the aviation kerosene and gasoline and the aviation kerosene are respectively performed, the maximum mass fraction x ₁ of the allowable blending gasoline in the aviation kerosene and the maximum mass fraction y ₁ of the allowable blending aviation kerosene in the gasoline are obtained, and then the aviation kerosene and the gasoline are sequentially pumped into a starting blending section of a pipeline by a centrifugal pump, and blended at the contact surface of the two oils to generate mixed oil. The sequentially conveyed oil products sequentially pass through a starting metering section, a middle metering section and an end metering section of the pipeline, the density of the oil products in the pipeline is detected in real time by an on-line densimeter, and the flowmeter is used for measuring the flow of the finished oil conveyed by the pipeline in real time. And the oil product enters the end point cutting section through the end point metering section, the density of the oil product passing through the end point section of the pipeline is detected by the online densimeter, and the quality fraction of the oil product at the moment is calculated reversely. The oil mixing section can be cut according to the mass fraction of the oil, for example, the oil can be cut as follows: when the quality fractions of the prior oil products are (1-x₁)～100％、(1-2x₁)/4～(1-x₁)、50％～(1-2x₁)/4、(1-2y₁)/4～50％、y₁～(1-2y₁)/4、0％～y₁ respectively, the opening of different electric valves is controlled through a communication cable, so that the oil products enter different oil mixing tanks. The oil products sequentially enter an oil product A (aviation kerosene) tank, an oil tank doped with low-quality-fraction oil product B, an oil tank doped with high-quality-fraction oil product A, an oil tank doped with low-quality-fraction oil product A and an oil product B (gasoline) tank, and the oil product cutting process is completed. In this embodiment, it should be noted that, the low-mass fraction oil B is an oil B with a mass fraction less than a first threshold, the high-mass fraction oil B with a mass fraction greater than the first threshold, the high-mass fraction oil a with a mass fraction greater than a second threshold, and the low-mass fraction oil a with a mass fraction less than the second threshold.

According to the technical scheme, in the cutting method for sequentially conveying aviation kerosene and gasoline provided by the embodiment of the invention, for the sequentially conveyed aviation kerosene and gasoline, the most sensitive index of the aviation kerosene is determined to be chromaticity through a blending test of the aviation kerosene and the gasoline, and the maximum mass fraction of the blended gasoline in the aviation kerosene is determined to be x ₁ according to the chromaticity of the most sensitive index of the aviation kerosene; determining the most sensitive index of the gasoline as a distillation range through a blending test of the gasoline and the aviation kerosene, and determining the maximum mass fraction of the allowed blended aviation kerosene in the gasoline as y ₁ according to the distillation range of the most sensitive index of the gasoline; and respectively taking x ₁ and y ₁ as two critical points of oil cutting, and taking the two critical points and 50% mass fraction of the middle oil mixing section as important cutting indexes to cut the aviation kerosene and gasoline sequential conveying oil mixing section. Therefore, the invention fully utilizes the quality potential of the pipe-conveyed oil product, and performs refined oil product cutting, and the invention can accurately cut the aviation kerosene and gasoline mixed oil section, thereby ensuring that the quality of the aviation kerosene after pipe conveying meets the standard requirements and further improving the economic benefit of pipe conveying.

Based on the above embodiment, in this embodiment, x ₁ and y ₁ are respectively used as two critical points for cutting an oil product, and the middle oil mixing section uses the two critical points and 50% mass fraction as important cutting indexes, so as to cut the oil mixing section for sequentially conveying aviation kerosene and gasoline, which specifically includes:

Based on the above description of the embodiments, in this embodiment, the mass fraction of the delivered oil is calculated at the end cutting stage by using an on-line densitometer, which specifically includes:

According to the cutting method for sequentially conveying aviation kerosene and gasoline, which is provided by the embodiment, the oil quality fraction of the forward oil product at the current moment is calculated according to the oil density of the cross section of the end point of the pipeline, so that the oil product can be accurately segmented according to the oil quality fraction of the forward oil product at the current moment, for example, if the oil quality fraction c of the forward oil product at the current moment meets a first condition (1-x ₁) to 100%, the oil product is controlled to enter an oil tank of the oil product A; the oil product A is aviation kerosene; if the oil mass fraction c of the forward oil product at the current moment meets a second condition (1-2 x ₁)/4～(1-x₁), controlling the oil product to enter an oil tank doped with the low-mass fraction oil product B; The oil B is gasoline; if the oil mass fraction c of the forward oil product at the current moment meets the third condition of 50% -1-2 x ₁)/4, controlling the oil product to enter an oil tank doped with the oil product B with high mass fraction; if the oil mass fraction c of the forward oil product at the current moment meets the fourth condition (1-2 y ₁)/4-50%, controlling the oil product to enter an oil tank doped with the oil product A with high mass fraction; If the oil mass fraction c of the forward oil product at the current moment meets the fifth condition y ₁～(1-2y₁)/4, controlling the oil product to enter an oil tank doped with the low-mass fraction oil product A; and if the oil mass fraction c of the forward oil product at the current moment meets the sixth condition of 0-y ₁, controlling the oil product to enter the oil tank of the oil product B. Therefore, the embodiment realizes the cutting theoretical research of the sequential conveying oil mixing section of the aviation kerosene and the gasoline through the blending test of the aviation kerosene and the gasoline, determines the most sensitive index of the aviation kerosene as chromaticity through the blending test of the aviation kerosene and the gasoline, further determines the maximum mass fraction of the blended gasoline in the aviation kerosene as x ₁ according to the chromaticity of the most sensitive index of the aviation kerosene, determines the most sensitive index of the gasoline as a distillation range through the blending test of the gasoline and the aviation kerosene, further determines the maximum mass fraction of the blended aviation kerosene in the gasoline as y ₁ according to the distillation range of the most sensitive index of the gasoline, The accurate segmentation of the mixed oil section can be realized by adopting an accurate segmentation model of a six-step method according to the maximum mass fraction of the allowable blended gasoline in the aviation kerosene of x ₁ and the maximum mass fraction of the allowable blended aviation kerosene in the gasoline of y ₁. Therefore, the cutting theory research of the aviation kerosene and gasoline sequential conveying oil mixing section is perfected, the aviation kerosene and gasoline oil mixing section is accurately cut, the quality potential of the aviation kerosene is fully utilized, the quality of the aviation kerosene after pipe conveying is ensured to meet the standard requirement, and the pipe conveying economic benefit is improved.

Based on the foregoing embodiment, in this embodiment, according to the mass fraction of the transported oil product, x ₁ and y ₁ are respectively used as two critical points for cutting the oil product, and the middle oil mixing section uses the two critical points and 50% mass fraction as important cutting indexes, so as to cut the oil mixing section for sequentially transporting aviation kerosene and gasoline, which specifically includes:

According to x ₁ and y ₁, the oil mixing section is segmented by adopting a six-step accurate segmentation model, wherein the six-step accurate segmentation model is as follows:

① If the oil mass fraction c of the forward oil product at the current moment meets the first condition (1-x ₁) to 100%, controlling the oil product to enter an oil tank of the oil product A; the oil product A is aviation kerosene;

② If the oil mass fraction c of the forward oil at the current moment meets a second condition (1-2 x ₁)/4～(1-x₁), controlling the oil to enter an oil tank doped with the low-mass fraction oil B for the subsequent blending of the high-quality oil A; the oil B is gasoline;

③ If the oil mass fraction c of the forward oil at the current moment meets the third condition of 50% -1-2 x ₁)/4, controlling the oil to enter an oil tank doped with the oil B with high mass fraction for the subsequent blending of the low-quality oil A;

④ If the oil mass fraction c of the forward oil product at the current moment meets the fourth condition (1-2 y ₁)/4-50%, controlling the oil product to enter an oil tank doped with the oil product A with high mass fraction for the subsequent blending of the low-quality oil product B;

⑤ If the oil quality fraction c of the forward oil at the current moment meets the fifth condition y ₁～(1-2y₁)/4, controlling the oil to enter an oil tank doped with the low-quality fraction oil A for the subsequent blending of the high-quality oil B;

⑥ And if the oil mass fraction c of the forward oil product at the current moment meets the sixth condition of 0-y ₁, controlling the oil product to enter the oil tank of the oil product B.

In this embodiment, the high-quality oil product a refers to the mixed oil product having a mass fraction of the oil product a greater than a preset value 1, and the low-quality oil product a refers to the mixed oil product having a mass fraction of the oil product a less than the preset value 1. The high-quality oil B refers to the mass fraction of the oil B in the mixed oil being greater than a preset value 2, and the low-quality oil B refers to the mass fraction of the oil B in the mixed oil being less than the preset value 2.

Fig. 3 is a schematic structural diagram of a cutting device for sequentially conveying aviation kerosene and gasoline according to an embodiment of the present invention, as shown in fig. 3, where the cutting device for sequentially conveying aviation kerosene and gasoline according to the embodiment of the present invention is used for cutting aviation kerosene and gasoline with a density difference smaller than a preset threshold, and includes:

The first determining module 201 is configured to determine, through a blending test of aviation kerosene and gasoline, that a most sensitive index of the aviation kerosene is chromaticity, and determine, according to the chromaticity of the most sensitive index of the aviation kerosene, that a maximum mass fraction of the blending gasoline in the aviation kerosene is x ₁;

the second determining module 202 is configured to determine, through a blending test of gasoline and aviation kerosene, that a most sensitive index of the gasoline is a distillation range, and determine, according to the distillation range of the most sensitive index of the gasoline, that a maximum mass fraction of the aviation kerosene allowed to be blended in the gasoline is y ₁;

And the cutting module 203 is used for respectively taking x ₁ and y ₁ as two critical points of oil cutting, and the middle oil mixing section takes the two critical points and 50% mass fraction as important cutting indexes so as to cut the aviation kerosene and gasoline sequential conveying oil mixing section.

Based on the foregoing embodiments, in this embodiment, the cutting module is specifically configured to:

Based on the foregoing embodiment, in this embodiment, when the cutting module calculates the mass fraction of the delivered oil product in the end cutting section by using an online densitometer, the cutting module is specifically configured to:

Based on the foregoing embodiment, in this embodiment, when the cutting module uses x ₁ and y ₁ as two critical points for cutting the oil product according to the mass fraction of the transported oil product, and the middle oil mixing section uses the two critical points and 50% mass fraction as important cutting indexes, the cutting module is specifically configured to:

The cutting device for sequentially conveying aviation kerosene and gasoline provided by the embodiment can be used for executing the cutting method for sequentially conveying aviation kerosene and gasoline provided by the embodiment, and the working principle and the beneficial effects of the cutting device are similar, and are not described in detail herein.

Another embodiment of the present invention provides a cutting system for sequentially conveying aviation kerosene and gasoline, as shown in fig. 4, the system comprising: a starting point blending section, a starting point metering section, an intermediate metering section, a terminal metering section and a terminal cutting section;

the starting point blending section comprises a finished oil tank, a valve and a centrifugal pump, wherein aviation kerosene and gasoline to be conveyed are stored in the finished oil tank, the centrifugal pump sequentially pumps the aviation kerosene and gasoline into a pipeline, and blending occurs at the contact surface of the two oil products to generate mixed oil;

The starting point metering section comprises an online densimeter, a flowmeter, a receiving and transmitting ball cylinder and a valve; the online densimeter is used for detecting the density of oil products passing through the section of the starting point of the pipeline in real time, the flowmeter is used for measuring the flow of finished oil conveyed by the starting point of the pipeline, and the receiving and dispatching ball cylinder is used for sending a pipe cleaner;

the middle metering section comprises an online densimeter, a flowmeter and a valve; the on-line densimeter is used for detecting the density of the oil product passing through the middle section of the pipeline in real time, and the flowmeter is used for measuring the flow rate of the finished oil conveyed by the middle section of the pipeline;

The terminal metering section comprises a ball receiving and sending cylinder, an online densimeter, a flowmeter and a valve; the receiving and dispatching ball cylinder is used for receiving a pipe cleaner, the online densimeter is used for detecting the density of oil products passing through the end point section of the pipeline in real time, and the flowmeter is used for measuring the flow of finished oil conveyed by the end point of the pipeline;

The terminal cutting section comprises a mixing tank, an online densimeter and a flowmeter; the online densimeter is used for detecting the oil density in real time and calculating the oil quality fraction at the moment according to the oil density detected in real time, and taking the relation between the oil quality fraction at the moment and the maximum mass fraction x ₁ of the allowable blending gasoline in the aviation kerosene and the maximum mass fraction y ₁ of the allowable blending aviation kerosene of the gasoline under the condition of meeting the quality requirement as a cutting basis, controlling the oil to enter different oil mixing tanks, and completing the oil cutting process;

The flowmeter is used for measuring the oil mixing amount entering different oil mixing tanks; the oil mixing tank is used for storing the cut oil mixture for the next treatment.

Referring to fig. 4, 1 denotes a aviation kerosene tank, 2 denotes a gasoline tank, 3,4, 10, 11, 12, 14, 19, 20, 21, 23, 24 denotes valves, 5, 6, 8 denotes centrifugal pumps, 7, 15, 17, 25 denotes flow meters, 8, 16, 18, 26 denotes an on-line densitometer, 13, 22 denotes a receiving ball cylinder, 27, 29, 31, 33, 35, 37 denotes an electric valve, 28, 30, 32, 34, 36, 38 denotes different oil mixing tanks, and 39 denotes communication cables. As shown in fig. 4, the cutting system for sequentially conveying aviation kerosene and gasoline provided by the embodiment comprises finished oil tanks (1, 2), valves (3, 4, 10, 11, 12, 14, 19, 20, 21, 23, 24), centrifugal pumps (5, 6, 8), flow meters (7, 15, 17, 25), on-line densitometers (8, 16, 18, 26), ball receiving and transmitting cylinders (13, 22), electric valves (27, 29, 31, 33, 35, 37), oil mixing tanks (28, 30, 32, 34, 36, 38) and communication cables (39).

It can be understood that aviation kerosene and gasoline are respectively stored in the finished oil tanks (1 and 2), when the aviation kerosene and gasoline are sequentially conveyed, the valve (3) and the centrifugal pump (5) are firstly opened, after the transportation of the aviation kerosene in the aviation kerosene tank (1) is completed, the valve (3) and the centrifugal pump (5) are closed, the valve (4) and the centrifugal pump (6) are opened, the finished oil in the gasoline tank (2) is conveyed to the starting point blending section of the pipeline, the aviation kerosene is the forward oil product, and the gasoline is the backward oil product. The finished oil sequentially conveyed enters a starting point metering section, the flow and density are detected sequentially through a flowmeter (7) and an online densimeter (8), when ball receiving and transmitting operations are not carried out, valves (12 and 14) are in a closed state, and the finished oil sequentially enters an intermediate metering section through valves (10 and 11); When the ball receiving and transmitting cylinder is operated, the valve (11) is closed, so that the oil products which are sequentially conveyed enter the middle metering section through the valve (12), the ball receiving and transmitting cylinder (13) and the valve (14). In the middle metering section, the oil product sequentially passes through a flowmeter (15) and an online densimeter (16), and the flow and the density of the oil product are detected in real time. Finally, the finished oil enters a final metering section, when the ball receiving and transmitting operation is not carried out in the final metering section, the valves (21, 23) are in a closed state, and the finished oil sequentially enters a final cutting section through the valves (19, 20, 24); when the ball receiving and transmitting cylinder is operated, the valve (20) is closed, so that the oil products which are sequentially conveyed enter the end cutting section through the valve (21), the ball receiving and transmitting cylinder (22), the valve (23) and the valve (24). It will be appreciated that in the end-point cutting section, the flow meter (25) meters the flow of oil into each mixing tank, and the on-line densitometer (26) is used to detect the oil density in real time and calculate the oil mass fraction at that time back as the cutting basis. When the mass fraction of the current oil product, namely aviation kerosene, is (1-x ₁) to 100 percent, the electric valve (27) is controlled to be opened through the communication cable (39), and the oil product enters the oil mixing tank (28); when the mass fraction is (1-2 x ₁)/4～(1-x₁), the electric valve (29) is controlled to be opened through the communication cable (39), and oil products enter the oil mixing tank (30); When the mass fraction is 50% -1-2 x ₁)/4, the electric valve (31) is controlled to be opened through the communication cable (39), and oil products enter the oil mixing tank (32); when the mass fraction is (1-2 y ₁)/4-50%, the electric valve (33) is controlled to be opened through the communication cable (39), and oil products enter the oil mixing tank (34); when the mass fraction is y ₁～(1-2y₁)/4, the electric valve (35) is controlled to be opened through the communication cable (39), and oil products enter the oil mixing tank (36). when the mass fraction is 0-y ₁, the electric valve (37) is controlled to be opened through the communication cable (39), and oil products enter the oil mixing tank (38). The oil mixing tanks (28, 30, 32, 34, 36, 38) are respectively a forward oil tank, an oil tank doped with low-quality-fraction backward oil, an oil tank doped with high-quality-fraction forward oil, an oil tank doped with low-quality-fraction forward oil, and a backward oil tank. And finally, finishing the oil product sequential conveying and mixed oil cutting processes, and storing the oil in the oil tank for the next treatment and utilization.

The cutting system for sequentially conveying aviation kerosene and gasoline provided by the embodiment can be used for executing the cutting method for sequentially conveying aviation kerosene and gasoline provided by the embodiment, and the working principle and the beneficial effects of the cutting system are similar, and are not described in detail herein.

Based on the same inventive concept, a further embodiment of the present invention provides an electronic device, see fig. 5, comprising in particular: a processor 301, a memory 302, a communication interface 303, and a communication bus 304;

Wherein, the processor 301, the memory 302, and the communication interface 303 complete communication with each other through the communication bus 304; the communication interface 303 is used for realizing information transmission between devices;

The processor 301 is configured to invoke a computer program in the memory 302, where the processor executes the computer program to implement all the steps of the above-mentioned cutting method for sequentially delivering aviation kerosene and gasoline, for example, the processor executes the computer program to implement the following steps: determining the most sensitive index of the aviation kerosene as chromaticity through a blending test of the aviation kerosene and the gasoline, and determining the maximum mass fraction of the blended gasoline in the aviation kerosene as x ₁ according to the chromaticity of the most sensitive index of the aviation kerosene; determining the most sensitive index of the gasoline as a distillation range through a blending test of the gasoline and the aviation kerosene, and determining the maximum mass fraction of the allowed blended aviation kerosene in the gasoline as y ₁ according to the distillation range of the most sensitive index of the gasoline; and respectively taking x ₁ and y ₁ as two critical points of oil cutting, and taking the two critical points and 50% mass fraction of the middle oil mixing section as important cutting indexes to cut the aviation kerosene and gasoline sequential conveying oil mixing section.

Based on the same inventive concept, a further embodiment of the present invention provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements all the steps of the above-described cutting method for sequential delivery of aviation kerosene and gasoline, for example, the processor implementing the following steps when executing the computer program: determining the most sensitive index of the aviation kerosene as chromaticity through a blending test of the aviation kerosene and the gasoline, and determining the maximum mass fraction of the blended gasoline in the aviation kerosene as x ₁ according to the chromaticity of the most sensitive index of the aviation kerosene; determining the most sensitive index of the gasoline as a distillation range through a blending test of the gasoline and the aviation kerosene, and determining the maximum mass fraction of the allowed blended aviation kerosene in the gasoline as y ₁ according to the distillation range of the most sensitive index of the gasoline; and respectively taking x ₁ and y ₁ as two critical points of oil cutting, and taking the two critical points and 50% mass fraction of the middle oil mixing section as important cutting indexes to cut the aviation kerosene and gasoline sequential conveying oil mixing section.

Further, the logic instructions in the memory described above may be implemented in the form of software functional units and stored in a computer-readable storage medium when sold or used as a stand-alone product. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules can be selected according to actual needs to achieve the purpose of the embodiment of the invention. Those of ordinary skill in the art will understand and implement the present invention without undue burden.

From the above description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus necessary general hardware platforms, or of course may be implemented by means of hardware. Based on such understanding, the foregoing technical solution may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as a ROM/RAM, a magnetic disk, an optical disk, etc., and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method for cutting the sequential delivery of aviation kerosene and gasoline in accordance with the various embodiments or some parts of the embodiments.

Furthermore, in the present disclosure, such as "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

Moreover, in the present invention, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Furthermore, in the description herein, reference to the terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. The cutting method for sequentially conveying aviation kerosene and gasoline is characterized by comprising the following steps of:

Taking x ₁ and y ₁ as two critical points of oil cutting respectively, taking the two critical points and 50% mass fraction of the middle oil mixing section as important cutting indexes, and cutting the aviation kerosene and gasoline sequentially conveyed oil mixing section;

According to the mass fraction of the transported oil, x ₁ and y ₁ are respectively used as two critical points for cutting the oil, the middle oil mixing section uses the two critical points and 50% mass fraction as important cutting indexes, so as to cut the aviation kerosene and gasoline sequential transport oil mixing section, and the method specifically comprises the following steps:

If the oil mass fraction c of the forward oil at the current moment meets a second condition (1-2 x ₁）/4~(1-x₁), controlling the oil to enter an oil tank doped with the low-mass fraction oil B for the subsequent blending of the high-quality oil A; the oil B is gasoline;

If the oil quality fraction c of the forward oil at the current moment meets the fifth condition y ₁~（1-2y₁)/4, controlling the oil to enter an oil tank doped with the low-quality fraction oil A for the subsequent blending of the high-quality oil B;

And if the oil mass fraction c of the forward oil product at the current moment meets the sixth condition of 0% -y ₁, controlling the oil product to enter an oil tank of the oil product B.

2. The method for cutting aviation kerosene and gasoline in accordance with claim 1, wherein x ₁ and y ₁ are respectively used as two critical points for cutting oil products, the middle oil mixing section uses the two critical points and 50% mass fraction as important cutting indexes, so as to cut the aviation kerosene and gasoline in order, and the method specifically comprises the following steps:

3. The method for cutting aviation kerosene and gasoline in accordance with claim 2, wherein the mass fraction of the oil transported is calculated by an on-line densitometer at the end cutting stage, specifically comprising:

Calculating the oil quality fraction of the forward oil at the current moment according to the oil density of the end-point section of the pipeline and the relation model; wherein the relationship model is ；

Wherein c represents the oil quality fraction of the forward oil at the current moment,Indicating the density of the oil product passing through the end section of the pipeline,Indicating the oil density of the forward oil,Indicating the oil density of the post-run oil.

4. The utility model provides a cutting device that aviation kerosene and petrol carried in order, its characterized in that is used for the cutting of aviation kerosene and petrol carried in order that the density difference is less than the preset threshold value, includes:

The cutting module is used for respectively taking x ₁ and y ₁ as two critical points of oil cutting, and the middle oil mixing section takes the two critical points and 50% mass fraction as important cutting indexes so as to cut the aviation kerosene and gasoline sequential conveying oil mixing section;

The cutting module is used for taking x ₁ and y ₁ as two critical points for cutting oil products respectively according to the mass fraction of the transported oil products, and the middle oil mixing section takes the two critical points and 50% mass fraction as important cutting indexes, so that when the aviation kerosene and gasoline are transported in sequence for cutting the oil mixing section, the cutting module is specifically used for:

5. Cutting device for sequential delivery of aviation kerosene and petrol according to claim 4, characterised in that said cutting module is specifically adapted to:

6. The cutting device for sequential delivery of aviation kerosene and gasoline in accordance with claim 5, wherein said cutting module is adapted to, when calculating the mass fraction of the delivered oil by an on-line densitometer at the end cutting stage:

7. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor, when executing the computer program, implements a method of cutting a sequential delivery of aviation kerosene and gasoline according to any one of claims 1 to 3.

8. A non-transitory computer readable storage medium having stored thereon a computer program, which when executed by a processor, implements a method of cutting a sequential delivery of aviation kerosene and gasoline according to any one of claims 1 to 3.