Pump unit optimization method and system for product oil branch pipeline injection station and storage medium

Abstract

The invention relates to the technical field of product oil conveying, in particular to a product oil branch pipeline injection station pump unit optimization method and system and a storage medium. The method comprises the following steps: respectively acquiring main pipeline pressure and main pipeline elevation difference, and acquiring first pressure according to the main pipeline pressure and the main pipeline elevation difference; oil supply pressure and elevation difference of the branch pipeline are obtained respectively, and injection pressure of the injection station of the branch pipeline injected into the trunk pipeline is obtained according to the oil supply pressure and the elevation difference of the branch pipeline; and according to the first pressure and the injection pressure, the opening or closing condition of each pump in the pump unit of the injection station is judged. According to the method, the elevation difference of a main pipeline and the elevation difference and pressure of a branch pipeline serve as starting and stopping judgment factors of an injection station pump unit, so that potential energy can be effectively utilized; smooth injection of the branch pipeline injection station can be achieved, and the purposes of reducing energy consumption and conveying cost can be achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of finished oil transportation, and in particular to a method, system and storage medium for optimizing a pump unit of a finished oil branch pipeline injection station. Background Art

[0002] When refined oil is transported over long distances, some branch pipelines are often set up on the trunk pipeline according to the demand for refined oil and transportation conditions. Since refined oil has a certain pressure when it is transported in the trunk pipeline, when the refined oil in the branch pipeline is injected into the trunk pipeline, it needs to have a higher pressure.

[0003] Pump units are usually installed at injection stations where branch pipelines and trunk pipelines are interconnected. In order to ensure that the oil products in the branch pipelines can be smoothly injected into the trunk pipeline, it is generally necessary to turn on the pump to provide additional pressure. However, under the influence of factors such as terrain and transportation distance, the pressure of finished oil in the trunk pipeline and branch pipeline often changes during transportation. At the same time, since the branch station on the trunk pipeline is also equipped with a pump unit, the pump unit can be turned on or off according to different needs, which also has an important impact on the pressure of finished oil in the trunk pipeline.

[0004] At present, the output pressure of the pump unit at the injection station is generally set to be greater than the pressure of the trunk pipeline distribution station. Although this can ensure smooth injection, the cost and energy consumption are very high, making it difficult to reduce the transportation cost of refined oil. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a method, system and storage medium for optimizing a pump unit in a finished oil branch pipeline injection station.

[0006] The technical solution of the present invention to solve the above technical problems is as follows:

[0007] The present invention provides a method for optimizing a pump unit of a finished oil branch pipeline injection station, comprising the following steps:

[0008] respectively obtaining a main pipeline pressure and a main pipeline elevation difference, and obtaining a first pressure according to the main pipeline pressure and the main pipeline elevation difference;

[0009] The oil supply pressure of the branch pipeline and the elevation difference of the branch pipeline are respectively obtained, and the injection pressure of the injection station of the branch pipeline into the trunk pipeline is obtained by the oil supply pressure and the elevation difference of the branch pipeline;

[0010] The on or off status of each pump in the pump unit of the injection station is determined according to the first pressure and the injection pressure.

[0011] Based on the above technical solution, the present invention can also be improved as follows.

[0012] Furthermore, the first pressure is the pressure of the refined oil in the trunk pipeline flowing through the injection station.

[0013] Furthermore, it also includes obtaining the first pressure according to the inlet pressure of the trunk pipeline input station, the distance between the trunk pipeline input station and the injection station, and the pressure loss coefficient.

[0014] Furthermore, the elevation difference of the trunk pipeline is the elevation difference between the trunk pipeline input station and the injection station.

[0015] Furthermore, the trunk pipeline input station is located upstream of the injection station and adjacent to the injection station.

[0016] Furthermore, the elevation difference of the branch pipeline is the elevation difference between the inlet of the branch pipeline and the injection station.

[0017] Further, judging the on or off status of each pump in the pump unit of the injection station according to the first pressure and the injection pressure comprises the following steps:

[0018] When the first pressure is greater than or equal to the injection pressure, at least one pump in the pump assembly is turned on, and the output pressure of at least one pump is greater than the difference between the first pressure and the injection pressure;

[0019] When the first pressure is less than the injection pressure, each pump in the pump unit is turned off.

[0020] The present invention also provides a pump unit optimization system for a finished oil branch pipeline injection station, comprising:

[0021] A trunk pipeline monitoring unit, used to obtain the trunk pipeline pressure and the trunk pipeline elevation difference, and obtain the first pressure according to the trunk pipeline pressure and the trunk pipeline elevation difference;

[0022] A branch pipeline monitoring unit, used for obtaining the injection pressure of the injection station of the branch pipeline into the trunk pipeline according to the elevation difference of the branch pipeline;

[0023] A control unit is used to determine whether each pump in the pump unit of the injection station is turned on or off according to the first pressure and the injection pressure.

[0024] The present invention also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the above-mentioned optimization method when executing the computer program.

[0025] The present invention also provides a computer-readable storage medium, on which is stored a computer program programmed or configured to execute the above-mentioned optimization method.

[0026] The beneficial effects of the present invention are:

[0027] (1) The method for optimizing the pump unit of the finished oil branch pipeline injection station of the present invention uses the elevation difference of the trunk pipeline and the elevation difference and pressure of the branch pipeline as the judgment factors for opening and closing the pump unit of the injection station, so that the potential energy can be effectively utilized;

[0028] (2) The method for optimizing the pump unit of the injection station of the branch pipeline of the finished oil product of the present invention can optimize the working state of the pump unit of the injection station, thereby achieving smooth injection of the branch pipeline injection station and reducing energy consumption and transportation costs;

[0029] (3) The method for optimizing the pump unit of the injection station of the finished oil branch pipeline of the present invention takes into account factors such as the conveying distance and the addition of drag reducer when obtaining the pipeline pressure, so that the pressure acquisition result is more objective and accurate;

[0030] (4) The method for optimizing the pump unit of the finished oil branch pipeline injection station of the present invention can effectively reduce the transportation cost and energy consumption of the finished oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 The present invention is a flow chart of the method for optimizing the pump unit of the finished oil branch pipeline injection station. DETAILED DESCRIPTION

[0032] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0033] like Figure 1 As shown, the method for optimizing the pump unit of the finished oil branch pipeline injection station of the present invention comprises the following steps:

[0034] S1. Obtaining the main pipeline pressure and the main pipeline elevation difference respectively, and obtaining a first pressure according to the main pipeline pressure and the main pipeline elevation difference;

[0035] S2, respectively obtaining the oil supply pressure of the branch pipeline and the elevation difference of the branch pipeline, and obtaining the injection pressure of the injection station of the branch pipeline into the trunk pipeline from the oil supply pressure and the elevation difference of the branch pipeline;

[0036] S3. Determine whether each pump in the pump unit of the injection station is on or off according to the first pressure and the injection pressure.

[0037] Since the trunk pipeline and the branch pipeline have different elevation differences during long-distance transportation, the finished oil in the pipeline itself has certain potential energy. The method for optimizing the pump unit of the finished oil branch pipeline injection station of the present invention uses the elevation difference of the trunk pipeline and the elevation difference and pressure of the branch pipeline as the judgment factors for opening and closing the injection station pump unit, so that the potential energy can be effectively utilized. In this way, the working state of the injection station pump unit is optimized, so that the smooth injection of the branch pipeline injection station can be achieved, and the purpose of reducing energy consumption and transportation costs can be achieved.

[0038] It should be noted that in this field, finished oil pipelines are divided into trunk lines and branch lines. Finished oil trunk lines generally refer to finished oil pipelines with an operating pressure of 6.4MPa and above; finished oil branch lines generally refer to pipelines for injecting and unloading finished oil in the trunk line; and oil supply pressure generally refers to the pressure provided by the oil supply pump in the pump station for the fluid.

[0039] Preferably, the first pressure is the pressure of the finished oil in the trunk pipeline flowing through the injection station; using the pressure of the finished oil flowing through the injection station as the first pressure can make the judgment result more objective and accurate, further reduce the energy consumption and transportation cost of the pump unit, and at the same time ensure the smooth injection of the injection station.

[0040] The method for optimizing the pump unit of a finished oil branch pipeline injection station of the present invention also includes obtaining a first pressure based on an inlet pressure of an input station of a trunk pipeline, a distance between the input station of the trunk pipeline and the injection station, and a pressure loss coefficient; the input station of the trunk pipeline may refer to the first station where the trunk pipeline inputs finished oil, or may refer to a branch station in the trunk pipeline; when referring to the first station, the inlet pressure refers to the input pressure provided by the pump unit of the first station; when referring to a branch station, the pump units of some branch stations may not be turned on during the transportation process, and the inlet pressure at this time refers to the pressure of the finished oil itself when passing through the branch station.

[0041] As the transportation distance increases, the pressure loss of refined oil in the pipeline becomes larger and larger. In short-distance transportation, such loss is generally negligible, but in long-distance transportation, this loss will cause changes in the transportation pressure of refined oil. Taking this loss as an influencing factor for obtaining the first pressure can make the first pressure more objective and accurate.

[0042] Theoretically, the transportation pressure loss of refined oil is proportional to the transportation distance. However, in actual operation, in addition to the transportation distance, a certain amount of drag reducer is often added to the refined oil. At the same time, the inner wall of the pipeline also has a certain influence on the pressure of the refined oil. The method of the present invention sets the pressure loss coefficient according to the influence of the above factors, and uses the coefficient together with the transportation distance and the inlet pressure to calculate the first pressure, so that the acquisition result of the first pressure is more objective and accurate.

[0043] Preferably, the elevation difference of the trunk pipeline is the elevation difference between the trunk pipeline input station and the injection station; the elevation difference here specifically refers to the difference between the altitude of the trunk pipeline input station and the altitude of the injection station. The value of the elevation difference can be positive or negative. Its practical significance lies in that when the elevation difference is a positive value, it means that the terrain of the input station is higher than that of the injection station. At this time, even if the pump unit of the input station is not turned on, when the finished oil flows through the injection station, the potential energy brought by the elevation difference will be converted into a certain pressure. In order to enable the injection station to smoothly inject the finished oil, it is necessary to make the finished oil in the branch pipeline have a pressure higher than this pressure; when the elevation difference is a negative value, it means that the terrain of the input station is lower than that of the injection station. At this time, in the trunk pipeline, the transportation of the finished product itself needs to provide an initial pressure. Under the influence of various factors, when the finished oil flows through the injection station, its pressure is less than or equal to the initial pressure. Then, as long as the finished oil in the branch pipeline has a pressure value greater than or equal to the initial pressure, smooth injection can be guaranteed.

[0044] Preferably, the main pipeline input station is located upstream of the injection station and adjacent to the injection station; multiple input stations or multiple branch pipelines are often set up on the finished oil main pipeline, and at least one input station is set up between two branch pipelines. Since the oil pressure in the pipeline changes in a complex way during long-distance transportation, in order to accurately optimize the pump group of a branch pipeline injection station, the input station examined by the method of the present invention is specifically located upstream of the branch pipeline and adjacent to it. In this way, the distance between the input station and the injection station is relatively close, the pressure influencing factors are the least, the optimization steps and parameters are the simplest, and the results obtained are also the most accurate.

[0045] Preferably, the elevation difference of the branch pipeline is the elevation difference between the inlet of the branch pipeline and the injection station; same as mentioned above, the elevation difference here specifically refers to the difference between the altitude of the inlet of the branch pipeline and the altitude of the injection station. The value of the elevation difference can be positive or negative. Its practical significance lies in that when the elevation difference is a positive value, it means that the terrain of the inlet of the branch pipeline is higher than the terrain of the injection station. At this time, when the finished oil in the branch pipeline reaches the injection station, the potential energy brought by the elevation difference will be converted into pressure, so that the finished oil itself has a certain pressure; when the elevation difference is a negative value, it means that the terrain of the inlet of the branch pipeline is lower than the terrain of the injection station. At this time, a pump unit needs to be added at the inlet of the branch pipeline to provide additional pressure for the oil in the branch.

[0046] It should be noted that although the pressure of finished oil in the branch pipeline is also affected by factors such as transportation loss, in actual applications, the diameter of the branch pipeline is much smaller than that of the trunk pipeline, and the flow rate of its finished oil is even smaller. Therefore, when calculating the pressure of the finished oil in the branch pipeline when it reaches the injection station, this loss can be ignored.

[0047] Preferably, the inlet pressure is P0, the distance between the main pipeline input station and the injection station is M1, and the total mileage of the main pipeline is M T , the pressure loss coefficient is k, the main pipeline pressure is P1, the main pipeline elevation difference is H1, the pressure generated by the elevation difference is P2, and the first pressure is P; the calculation formulas of each parameter are shown in formulas (1) to (4):

[0048] k=1-(M1 / M T ) (1)

[0049] P1=P0×k (2)

[0050] P2=ρgH1 (3)

[0051] P=P1+P2 (4)

[0052] Preferably, the oil supply pressure of the branch pipeline is P0', the elevation difference is H2, the injection pressure is P', and the calculation formula of the injection pressure P' is shown in formula (5):

[0053] P'=P0'+ρgH2 (5)

[0054] In the above formulas (1) to (5), ρ represents the density of the finished oil, and g is the gravity constant.

[0055] Obtain the injection pressure of the injection station of the branch pipeline into the trunk pipeline;

[0056] Preferably, the method for optimizing the pump unit of the finished oil branch pipeline injection station of the present invention determines the opening or closing status of each pump in the pump unit of the injection station according to the first pressure and the injection pressure, and comprises the following steps:

[0057] When the first pressure is greater than or equal to the injection pressure, at least one pump in the pump unit is turned on, and the output pressure of at least one pump is greater than the difference between the first pressure and the injection pressure; at this time, the pump unit can achieve smooth injection of finished oil into the branch pipeline with the least pump turned on, thereby achieving the purpose of saving energy and reducing costs.

[0058] When the first pressure is lower than the injection pressure, each pump in the pump unit is turned off; at this time, when the finished oil in the branch pipeline is injected into the trunk pipeline, there is no need to turn on the pump, thereby achieving the purpose of saving energy consumption and reducing costs.

[0059] Preferably, in order to monitor the branch line injection situation, the inlet pressure of another branch station located on the trunk line downstream of the injection station can be monitored. When the inlet pressure of the branch station reaches a preset value, it indicates that the branch line injection can proceed smoothly.

[0060] The pump unit optimization system for a finished oil branch pipeline injection station of the present invention comprises:

[0061] The trunk pipeline monitoring unit is used to obtain the trunk pipeline pressure and the trunk pipeline elevation difference, and obtain the first pressure according to the trunk pipeline pressure and the trunk pipeline elevation difference.

[0062] The branch pipeline monitoring unit is used to obtain the injection pressure of the branch pipeline injection station into the trunk pipeline according to the elevation difference of the branch pipeline.

[0063] The control unit is used to determine whether each pump in the pump unit of the injection station is turned on or off according to the first pressure and the injection pressure.

[0064] The electronic device of the present invention comprises a memory, a processor and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the optimization method of the present invention is implemented.

[0065] The computer-readable storage medium of the present invention stores a computer program programmed or configured to execute the optimization method of the present invention.

[0066] The present invention is described in detail below through specific examples.

[0067] Example

[0068] This embodiment uses the Lanzhou-Chengdu-Chongqing refined oil pipeline as the trunk pipeline. On the Lanzhou-Chengdu trunk pipeline, a Pengzhou injection branch pipeline is set. On the trunk pipeline, the sub-transmission station located upstream and adjacent to the Pengzhou injection station is Deyang Station. The sub-transmission station located downstream and adjacent to it is Chengdu Station. This implementation specifically optimizes the injection station pump unit of the Pengzhou branch line. The basic parameters of the above trunk pipeline and branch pipeline are as follows:

[0069] On the trunk pipeline, the distance from Deyang substation to Pengzhou injection station is 37.48km (M1), with an elevation difference of -86m. The trunk distance from Deyang substation to Chongqing terminal is 433.18km (M2). T ), according to the formula, k in this embodiment is 0.9135.

[0070] The oil pump at the inlet of the Pengzhou branch pipeline can provide a pressure of 0.8MPa. The total length of the branch pipeline from the inlet to the injection station is 23.27km, the pipe diameter is Φ273mm, and the elevation difference of the first station of the branch pipeline is 118.3m. According to calculations, this elevation difference can provide an elevation pressure energy of approximately 1.2MPa.

[0071] On the trunk pipeline, the terrain from the Chengdu substation to the Chongqing terminal is relatively flat, with an elevation difference of 68m.

[0072] In the actual transportation process, the above-mentioned trunk pipeline can be opened and closed. When the trunk pipeline is opened, the pressure provided by the pump unit of the Deyang branch station is 7.7869MPa. According to the formula of the present invention, P1 is 7.1133MPa. Since the elevation difference from Deyang to the Pengzhou injection station is -86m, P2 is calculated to be about -0.6, so the first pressure P is 6.513MPa. At this time, in order to ensure the smooth input of the Pengzhou branch pipeline, the pump unit of the Pengzhou injection station is adjusted to open and provide a pressure of 5.4MPa. Without using the optimization method of the present invention, the pump unit of the Pengzhou injection station needs to provide a pressure greater than 7.7869MPa.

[0073] When the trunk pipeline is closed, the Pengzhou branch pipeline and the trunk pipeline from the injection station to Chengdu can be operated separately. At this time, the pressure of the trunk pipeline from the upstream is 0. According to the formula of the present invention, the pump unit of the Pengzhou injection station can be completely closed, and smooth injection can be achieved only by the potential pressure provided by the oil pump at the entrance and the elevation difference. In order to evaluate the effect of this situation, this embodiment examines the transportation of gasoline and diesel respectively, and calculates the power consumption and transportation cost of the finished oil to the Chengdu station after the injection of the Pengzhou injection station.

[0074] When the Pengzhou to Chengdu section is operated independently, the 3 / h flow rate of gasoline, start the oil pump at the branch pipeline entrance, and use the injection station pump unit before optimization, the main pump of the injection station pump unit is running, at this time, the power consumption is 431kW·h, the cost is 0.027 yuan / ton-kilometer; after optimization, when only the oil pump is started and the injection station pump unit is not running, the power consumption is 59kW·h, the operating cost is 0.0038 yuan / ton-kilometer, the cost is 86% lower, and 8,900 yuan in electricity can be saved for every 10,000 cubic meters injected.

[0075] At the same time, the inlet pressure of Chengdu Station located downstream was investigated to be 1.5MPa. This pressure meets the subsequent transportation pressure requirements on the trunk line, indicating that Pengzhou Injection Station can carry out branch line injection smoothly.

[0076] Example 2

[0077] This embodiment examines the situation of transporting gasoline and diesel by pipeline in Embodiment 1, wherein the trunk line is not in operation and only the oil pump of the Pengzhou branch line is turned on.

[0078] For gasoline and diesel, the unit consumption comparison under different outputs of Pengzhou injection station is shown in Table 1:

[0079] Table 1 Comparison of unit consumption under different injection rates in Pengzhou

[0080]

[0081] When the gasoline flow rate is 208m3 / h or diesel (95#) flow rate is 214m 3 / h, the unit consumption comparison of the oil pump of Pengzhou injection station is shown in Table 2:

[0082] Table 2 Comparison of unit consumption of injection-only oil pump in Pengzhou

[0083] <![CDATA[Volume flow rate (m 3 / h)]]> 208 214(95#) Mass flow rate (t) 156 161 Power consumption of the first fuel pump (kW·h) 58 59 Power consumption of the second fuel pump (kW·h) 373 0 Total power consumption (kW·h) 431 59 Total Price 215.5 29.5 Turnover (t km) 7644 7889 Unit consumption (kW·h / t·km) 0.056 0.0074 Unit consumption (yuan / t·km) 0.0282 0.0037

[0084] It can be seen that after the optimization method of the present invention is adopted, the power consumption and transportation cost can be significantly reduced regardless of whether gasoline or diesel is transported.

[0085] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0086] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0087] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0088] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0089] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0090] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for optimizing a pump unit of a finished oil branch pipeline injection station, characterized in that: The following steps are involved: Respectively obtaining a trunk pipeline pressure and a trunk pipeline elevation difference of the trunk pipeline, and obtaining a first pressure according to the trunk pipeline pressure and the trunk pipeline elevation difference; Respectively obtaining the oil supply pressure of the branch pipeline and the elevation difference of the branch pipeline, and obtaining the injection pressure of the injection station of the branch pipeline into the trunk pipeline according to the oil supply pressure and the elevation difference of the branch pipeline; The on or off status of each pump in the pump unit of the injection station is determined according to the first pressure and the injection pressure.

2. A method for optimizing a pump unit of a finished oil branch pipeline injection station according to claim 1, characterized in that: The first pressure is the pressure of the finished oil in the trunk pipeline flowing through the injection station.

3. A method for optimizing a pump unit of a finished oil branch pipeline injection station according to claim 2, characterized in that: The trunk pipeline pressure includes the inlet pressure of the input station of the trunk pipeline; the obtaining the first pressure according to the trunk pipeline pressure and the trunk pipeline elevation difference includes: Obtaining the distance between the input station of the trunk pipeline and the injection station; Determine a pressure loss coefficient according to the distance, wherein a larger pressure loss coefficient indicates a smaller pressure loss; The first pressure is calculated according to the inlet pressure of the input station of the trunk pipeline and the pressure loss coefficient.

4. A method for optimizing a pump unit of a finished oil branch pipeline injection station according to claim 3, characterized in that: The elevation difference of the trunk pipeline is the elevation difference between the input station and the injection station of the trunk pipeline.

5. The method for optimizing the pump unit of a finished oil branch pipeline injection station according to claim 3, characterized in that: The input station of the trunk pipeline is located upstream of the injection station and adjacent to the injection station.

6. A method for optimizing a pump unit at a product oil branch pipeline injection station according to any one of claims 1 to 5, characterized in that: The branch pipeline elevation difference is the elevation difference between the inlet of the branch pipeline and the injection station.

7. A method for optimizing a pump unit at a product oil branch pipeline injection station according to any one of claims 1 to 5, characterized in that: The step of judging the on or off status of each pump in the pump unit of the injection station according to the first pressure and the injection pressure comprises the following steps: When the first pressure is greater than or equal to the injection pressure, at least one pump in the pump assembly is turned on, and the output pressure of at least one pump is greater than the difference between the first pressure and the injection pressure; When the first pressure is less than the injection pressure, each pump in the pump unit is turned off.

8. A pump unit optimization system for a finished oil branch pipeline injection station, characterized in that: include: A trunk pipeline monitoring unit, used to obtain the trunk pipeline pressure and the trunk pipeline elevation difference, and obtain a first pressure according to the trunk pipeline pressure and the trunk pipeline elevation difference; A branch pipeline monitoring unit, used for obtaining the injection pressure of the injection station of the branch pipeline into the trunk pipeline according to the elevation difference of the branch pipeline; A control unit is used to determine whether each pump in the pump unit of the injection station is turned on or off according to the first pressure and the injection pressure.

9. An electronic device, characterized in that: The invention comprises a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor implements the optimization method according to any one of claims 1 to 7 when executing the computer program.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program programmed or configured to execute the optimization method according to any one of claims 1 to 7.

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