An oil product delivery control method and device for an oil delivery device and an oil product delivery system

Abstract

The embodiment of the present application provides an oil product conveying control method, device and system of an oil conveying equipment, and belongs to the technical field of pipeline conveying. The oil product conveying control method comprises the following steps: based on the switching demand of the current oil product conveying mode, determining the corresponding conveying switching mode, wherein the conveying switching mode comprises a feeding pump switching mode, a pure oil product switching mode and a mixed switching mode; based on the determined conveying switching mode, determining the opening and closing states of the valve device on the corresponding conveying pipeline and / or the feeding pump; and according to the determined opening and closing states of the corresponding valve device and / or the feeding pump, under the condition that the long conveying pump is opened, controlling the valve device and / or the feeding pump to perform the opening and closing actions suitable for the corresponding opening and closing states, so as to switch the oil products and / or the feeding pump within a preset time length. The embodiment of the present application can realize uninterrupted and continuous conveying of multiple oil products, reduce the mixed oil increment, and improve the efficiency and safety of oil product conveying.

Description

Technical Field

[0001] This invention relates to the field of pipeline transportation technology, and more specifically to an oil transportation control method, device, and oil transportation system for oil transportation equipment. Background Technology

[0002] Currently, the advantages of using pipelines to transport refined oil products are widely recognized worldwide. Because gasoline, diesel, and jet fuel are flammable, explosive, have high vapor pressure, and are highly volatile, and are also highly fluid liquids, pipeline transportation is a technologically advanced, economically sound, safe, and reliable closed-loop transportation method, considering its technical, economic, and environmental protection aspects.

[0003] The current sequential transport method involves transporting several types of oil with the same destination along the same pipeline in a specific order to the consumption point. However, this method can cause oil mixing at the interface between different oil types when switching between them, resulting in a mixed oil section containing both types of oil. Since this mixed oil section typically does not meet the quality standards of either type of oil, it needs to be recovered and further processed.

[0004] Therefore, intermittent transportation is used in pipelines to reduce the mixing of refined oil products. For example, gasoline, diesel, and jet fuel from refineries or oil depots are intermittently transported to downstream oil depots via the same pipeline, and then distributed to individual users by sales companies. In this intermittent operation method, after one type of oil product is transported, when switching to the next type, the long-distance feed pump and booster pump are first paused, then the oil pipeline is switched, and then the long-distance feed pump is restarted. However, this operation not only wastes valuable pipeline transportation time during oil product switching, but also increases the safety risks of long-distance pipelines due to the starting and stopping of the long-distance pump. Therefore, the current intermittent transportation method undoubtedly increases the quality control risks and operational management risks of oil products during transportation. Summary of the Invention

[0005] The purpose of this invention is to provide an oil transportation control method, device, and oil transportation system for oil transportation equipment, so as to at least partially solve the above-mentioned technical problems.

[0006] To achieve the above objectives, in a first aspect, embodiments of the present invention provide an oil transportation control method for an oil transportation equipment. The oil transportation equipment includes multiple transportation pipelines and multiple feed pumps corresponding to and connected to the multiple transportation pipelines. The multiple feed pumps are connected to a long-distance pump. Each transportation pipeline is correspondingly equipped with a finished oil tank and multiple valve devices. The oil transportation control method includes: determining a corresponding transportation switching mode based on the switching requirements of the current oil transportation mode, wherein the transportation switching mode includes a feed pump switching mode, a pure oil switching mode, and a mixed switching mode; determining the opening and closing states of the valve devices and / or feed pumps on the corresponding transportation pipelines based on the determined transportation switching mode; and, according to the determined opening and closing states of the corresponding valve devices and / or feed pumps, under the condition that the long-distance pump is open, controlling the valve devices and / or the feed pumps to perform switching actions adapted to the corresponding opening and closing states, so as to switch the oil and / or switch the feed pump within a preset time period.

[0007] Optionally, the valve device includes a shut-off valve and a regulating valve located at the inlets of the first and second oil supply pumps, and a regulating valve located at the outlets of the first and second oil supply pumps, wherein the switching valves of the first and second oil supply pumps are connected to the same finished oil tank; for the oil supply pump switching mode, determining the opening and closing state of the valve device and / or oil supply pump on the corresponding delivery pipeline includes sequentially performing the following steps for the currently operating first oil supply pump and the second oil supply pump intended to operate after switching: sequentially opening the shut-off valve and the regulating valve located at the inlet of the second oil supply pump; controlling the opening degree of the regulating valve located at the outlet of the first oil supply pump to decrease; starting the second oil supply pump and controlling the opening degree of the regulating valve located at the outlet of the second oil supply pump to increase; controlling the opening degree of the regulating valve located at the outlet of the first oil supply pump to decrease to the minimum opening degree; and shutting down the first oil supply pump and controlling the opening degree of the regulating valve located at the outlet of the second oil supply pump to increase to the maximum opening degree.

[0008] Optionally, the valve device includes a shut-off valve, a regulating valve, and a switching valve located on the first and second delivery pipelines, wherein the first and second delivery pipelines are connected to an oil pump. For the pure oil switching mode, determining the opening and closing status of the valve device and / or the oil pump on the corresponding delivery pipeline includes sequentially performing the following steps for the first delivery pipeline delivering the current oil type and the second delivery pipeline delivering the switched oil type: with the switching valve on the second pipeline closed and the first oil pump open, sequentially open the shut-off valve, regulating valve, and switching valve on the second pipeline; and sequentially close the switching valve, shut-off valve, and regulating valve on the first delivery pipeline.

[0009] Optionally, the valve device includes a shut-off valve and a regulating valve located on the first delivery pipeline and the second delivery pipeline, wherein the first delivery pipeline and the second delivery pipeline are respectively connected to the first feed pump and the second feed pump, and the valve device further includes regulating valves located at the outlets of the first feed pump and the second feed pump, respectively; for the mixed switching mode, determining the opening and closing status of the valve device and / or feed pump on the corresponding delivery pipeline includes determining the currently operating first feed pump, the second feed pump intended to operate after switching, the first delivery pipeline delivering the current oil type, and the first delivery pipeline delivering the switched oil type. The two delivery pipelines sequentially perform the following steps: sequentially open the regulating valve and the shut-off valve on the second delivery pipeline; control the opening degree of the regulating valve located at the outlet of the first oil pump to decrease; start the second oil pump and control the opening degree of the regulating valve located at the outlet of the second oil pump to increase; control the opening degree of the regulating valve located at the outlet of the first oil pump to the minimum opening degree and shut down the first oil pump; close the shut-off valve and the regulating valve on the first delivery pipeline; control the opening degree of the regulating valve located at the outlet of the second oil pump to the maximum opening degree.

[0010] Optionally, after switching the type of oil being transported and / or the oil pump used to pump the oil, the oil transport control method further includes: monitoring the pipeline pressure of the transport pipeline in real time, and controlling the opening and closing degree of the regulating valve on the transport pipeline when the pipeline pressure exceeds a pressure threshold.

[0011] Optionally, the control duration for controlling the valve device and / or the oil pump to perform switching actions adapted to the corresponding opening and closing states meets a preset time threshold.

[0012] Secondly, embodiments of the present invention provide an oil transportation control device for an oil transportation equipment. The oil transportation equipment includes multiple transportation pipelines and multiple feed pumps corresponding to and connected to the multiple transportation pipelines. The multiple feed pumps are connected to a long-distance pump. Each transportation pipeline is correspondingly equipped with a finished oil tank and multiple valve devices. The oil transportation control device includes: a switching mode determination unit, used to determine a corresponding transportation switching mode based on the switching requirements of the current oil transportation mode, wherein the transportation switching mode includes a feed pump switching mode, a pure oil switching mode, and a mixed switching mode; a switching sequence determination unit, used to determine the opening and closing states of the valve devices and / or feed pumps on the corresponding transportation pipelines based on the determined transportation switching mode; and a control unit, used to control the valve devices and / or feed pumps to perform switching actions adapted to the corresponding opening and closing states when the long-distance pump is open, according to the determined opening and closing states of the corresponding valve devices and / or feed pumps, so as to switch the oil and / or switch the feed pump within a preset time period.

[0013] Thirdly, embodiments of the present invention provide an oil delivery control device, the oil delivery control device comprising: a memory storing a program capable of running on a processor; and the processor configured to implement the oil delivery control method described in any of the first aspects when executing the program.

[0014] Fourthly, embodiments of the present invention provide an oil conveying system, the oil conveying system including the oil conveying control device described in the second or third aspect.

[0015] Fifthly, embodiments of the present invention provide a machine-readable storage medium storing instructions for causing a machine to perform the oil delivery control method described in any of the first aspects.

[0016] Through the above technical solutions, the embodiments of the present invention can realize the uninterrupted continuous transportation of various oil products, reduce the increase of mixed oil, and avoid the safety risks to pipelines caused by the shutdown of long-distance pumps, effectively improve the efficiency and safety of oil transportation, save oil resources, and improve economic benefits.

[0017] Other features and advantages of the embodiments of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is a schematic diagram of an oil transportation device according to an exemplary embodiment;

[0020] Figure 2 This is a schematic flowchart illustrating an oil transportation control method for an oil transportation device according to an exemplary embodiment;

[0021] Figure 3 This is a schematic diagram of a control flow for switching modes of an oil pump, according to an exemplary embodiment.

[0022] Figure 4 This is a schematic diagram of the control flow for a pure oil switching mode according to an exemplary embodiment;

[0023] Figure 5 This is a schematic diagram of the control flow of a hybrid switching mode according to an exemplary embodiment;

[0024] Figure 6This is a schematic block diagram of an oil delivery control device according to an exemplary embodiment.

[0025] Explanation of reference numerals in the attached figures

[0026] 10: Finished oil tank; 20: Electric gate valve; 30: Electric butterfly valve; 40: Electric ball valve; 50a: First oil supply pump; 50b: Second oil supply pump; 50c: Long-distance pump. Detailed Implementation

[0027] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of the present invention.

[0028] Typically, oil products are pressurized by feed pumps and long-distance pumps to enable long-distance transport along pipelines. The current intermittent transport method involves transporting different oil products along the same long-distance pipeline. When switching oil products, both the long-distance pump and feed pump must be paused, and then restarted after the switch is complete. This not only wastes valuable transport time during oil product switching but also causes the newly entering oil to wedge into the previously existing oil during the alternation of the two different oil products within the pipeline due to changes in fluid flow patterns. This results in oil mixing, and the longer the pause, the greater the mixing distance and ultimately the larger the amount of mixed oil, reducing the effective utilization rate of the finished oil. Furthermore, the frequent start-stop of pumps in intermittent transport can cause pipeline damage due to water hammer, posing a significant safety hazard.

[0029] To address the aforementioned problems, the oil transportation equipment of this invention includes multiple transportation pipelines and multiple feed pumps corresponding to and connected to these pipelines. These feed pumps are collectively connected to a long-distance transportation pump. Each transportation pipeline is equipped with a finished oil tank and valve devices. Oil is output from the corresponding finished oil tank and, via the pumping force of the feed pumps and the long-distance transportation pump, is transported over long distances along the transportation pipelines. Figure 1 This is a schematic diagram of an oil transfer device according to an exemplary embodiment, such as... Figure 1 As shown, the oil transportation equipment includes multiple transportation pipelines, one end of which is equipped with a refined oil tank 10 storing different types of oil, namely refined oil A, refined oil B, and refined oil C. The valve device mainly includes shut-off valves, switching valves, and regulating valves. In this embodiment of the invention, an electric ball valve is used as the shut-off valve, an electric gate valve as the regulating valve, and an electric butterfly valve as the switching valve. An electric gate valve 20 and an electric butterfly valve 30 are sequentially installed at the outlet of each refined oil tank 10. Figure 1The oil transfer equipment includes two oil pumps, namely oil pump 50a and oil pump 50b, and each finished oil tank 10 is connected to oil pump 50a and oil pump 50b respectively. An electric gate valve 20 and an electric ball valve 40 are installed on the connected transfer pipelines respectively. An electric gate valve 20 is installed at the outlet of each of the first oil pumps 50a and 50b. Oil pumps 50a and 50b are connected to a long-distance pump 50c, and an electric ball valve 40 and an electric gate valve 20 are installed at the inlet and outlet of the long-distance pump 50c respectively.

[0030] Based on the oil transportation equipment described above, this invention discloses a schematic flowchart of an oil transportation control method, as follows: Figure 2 As shown, the oil transportation control method includes the following steps:

[0031] Step S210: Based on the switching requirements for the current oil transportation method, determine the corresponding transportation switching mode.

[0032] The delivery switching modes include a feed pump switching mode, a pure oil switching mode, and a mixed switching mode. The feed pump switching mode refers to stopping the currently operating feed pump from pumping the finished oil, and switching to the operating feed pump from which the finished oil is being pumped. The pure oil switching mode stops delivering the current type of oil, and switches to delivering the new type of oil. The mixed switching mode stops the currently operating feed pump from pumping the current type of finished oil, and switches to the new feed pump from pumping the new type of finished oil.

[0033] For example, combined Figure 1 Assuming the type of refined oil currently being transported is refined oil A, and the operating oil supply pump is oil supply pump 50a, then the requirements for switching the transport mode include:

[0034] 1) Switching the type of finished oil being transported. For example, if the type of finished oil being transported is switched from finished oil A to finished oil B, and the oil supply pump still operates as oil supply pump 50a, then the transport switching mode determined for this switching requirement is the pure oil switching mode.

[0035] 2) Switching the operating feed pump. For example, if the operating feed pump is switched from feed pump 50a to feed pump 50b, and the type of finished oil being transported is still finished oil A, then the transport switching mode determined for this switching requirement is the feed pump switching mode.

[0036] 3) Simultaneous switching of refined oil type and feed pump. For example, if the operating feed pump is switched from feed pump 50a to feed pump 50b, and the type of refined oil being transported is switched from refined oil A to refined oil B, then the transport switching mode determined for this switching requirement is a mixed switching mode.

[0037] Step S220: Based on the determined delivery switching mode, determine the opening and closing status of the valve devices and / or oil pumps on the corresponding delivery pipeline.

[0038] For example, after determining the delivery switching mode, it is necessary to determine the current open / closed state of each valve device and / or oil pump on the corresponding delivery pipeline, as well as the open / closed state after the switch, for the determined delivery switching mode. Continuing with the above example, taking the pure oil product switching mode as an example, after determining this switching mode, the electric gate valve 20 and electric ball valve 40 on the pipeline delivering refined oil A (the pipeline connecting the refined oil tank 10 storing refined oil A to the oil pump 50a) need to be switched from the current open state to the closed state, while the electric gate valve 20 and electric gate valve 40 on the pipeline delivering refined oil B (the pipeline connecting the refined oil tank 10 storing refined oil B to the oil pump 50a) need to be switched from the current closed state to the open state.

[0039] Step S230: Based on the determined opening and closing state of the corresponding valve device and / or the oil supply pump, under the condition that the long-distance pump is open, control the valve device and / or the oil supply pump to perform switching actions adapted to the corresponding opening and closing state, so as to switch the type of oil currently being transported and / or the oil supply pump used to pump the oil.

[0040] For example, based on the open / closed state determined in step S220, each valve device and oil pump is controlled to sequentially execute corresponding switching actions to complete the cutting off and opening of the corresponding delivery pipeline under the corresponding switching mode. The specific control process will be described in detail in the following embodiments.

[0041] As can be seen from the above steps S210-S230, the embodiments of the present invention can switch the delivery mode under continuous oil output by controlling the valve device and / or oil pump on the delivery pipeline according to different switching requirements, without stopping the long-distance pump, effectively reducing the safety risks caused by frequent start-stop of the long-distance pump.

[0042] The following sections provide further details on the three oil switching modes mentioned above.

[0043] (1) Oil pump switching mode

[0044] The valve device includes a shut-off valve and a regulating valve located at the inlets of the first and second oil supply pumps, and a regulating valve located at the outlets of the first and second oil supply pumps, wherein the switching valves of the first and second oil supply pumps are connected to the same finished oil tank. Figure 3 As shown, for the oil pump switching mode, determining the opening and closing status of the valve devices and / or oil pumps on the corresponding delivery pipeline includes sequentially performing the following steps for the currently operating first oil pump and the second oil pump intended to operate after the switch:

[0045] Step S310: Sequentially open the shut-off valve and the regulating valve located at the inlet of the second oil pump.

[0046] For example, combined Figure 1 As shown, the type of finished oil being transported is finished oil A, and the currently operating first oil supply pump is oil supply pump 50a. The intended operating oil supply pump after the switch is oil supply pump 50b. Specifically, the electric ball valve 40 and the electric gate valve 20 at the inlet of oil supply pump 50b are opened sequentially. At this time, the transport state is that finished oil A is still pumped by oil supply pump 50a, and because the valve device at the inlet of oil supply pump 50b is opened, the transport pipeline between the finished oil tank 10 storing finished oil A and oil supply pump 50b is connected.

[0047] Step S320: Control the opening degree of the regulating valve located at the outlet of the first oil pump to decrease.

[0048] For example, combined Figure 1 As shown, after opening the valve device at the inlet of the feed pump 50b, the opening degree of the electric gate valve 20 located at the outlet of the currently operating feed pump 50a is reduced. For example, if the current opening degree of the electric gate valve 20 is 100%, the reduced opening degree is 60%. The purpose of this step is to reduce the pumping rate of feed pump 50a for finished oil A by reducing the opening degree of the electric gate valve 20 at the outlet of the current feed pump 50a after feed pump 50b is ready to pump finished oil A.

[0049] Step S330: Start the second oil pump and control the opening degree of the regulating valve located at the outlet of the second oil pump to increase.

[0050] For example, combined Figure 1 As shown, the feed pump 50b is started, and feed pump 50b begins pumping finished oil A. At this time, the opening degree of the electric gate valve 20 at the outlet of feed pump 50b is increased. For example, if the valve is initially closed with an opening degree of 0, its opening degree can be increased to 60%. The purpose of this step is to increase the pumping rate of finished oil A by the switched feed pump 50b while reducing the current pumping rate of feed pump 50a.

[0051] Step S340: Control the opening degree of the regulating valve located at the outlet of the first oil pump to decrease to the minimum opening degree, and shut down the first oil pump and control the opening degree of the regulating valve located at the outlet of the second oil pump to increase to the maximum opening degree.

[0052] For example, combined Figure 1As shown, after the oil pump 50b starts pumping finished oil A, the opening degree of the electric gate valve 20 located at the outlet of the oil pump 50a is reduced to the minimum opening degree. For example, the minimum opening degree can be set to 0, that is, the electric gate valve 20 located at the outlet of the oil pump 50a is reduced from the 60% opening degree in step 320 above to 0, thereby closing the electric gate valve 20 and stopping the operation of the oil pump 50a. Further, the opening degree of the electric gate valve 20 located at the outlet of the oil pump 50b is increased to the maximum opening degree. For example, the maximum opening degree can be set to 100%, and the opening degree of the electric gate valve 20 located at the outlet of the oil pump 50b is increased from the 60% opening degree in step S330 above to the 100% opening degree. The purpose of this step is to cut off the pumping of oil pump 50a after oil pump 50b starts running, and to control oil pump 50b to pump finished oil A at its maximum opening degree, thus completing the switch from oil pump 50a to oil pump 50b.

[0053] It should also be noted that, under the above-mentioned oil pump switching mode, the electric gate valve 20, the electric ball valve 40 located at the inlet of the oil pump 50a, and the electric butterfly valve 30a connected to the electric gate valve 20 and the finished oil tank 10 containing finished oil A are all kept open and do not need to be closed, so as to balance the pressure in the delivery pipeline during the switching of the delivery mode and ensure the safety of the delivery pipeline.

[0054] As can be seen from the above steps S310 to S340, during the oil pump switching process of the embodiment of the present invention, on the one hand, it is not necessary to stop the long-distance pump, so as to realize the switching of the oil pump during the oil transportation process and ensure the continuous transportation of oil; on the other hand, by adjusting the opening and closing degree of the corresponding valve device, the defect of large pressure shock in the transportation pipeline during the adjustment process is effectively avoided, thereby improving the safety of the transportation pipeline and the oil pump while ensuring continuous transportation.

[0055] (2) Pure oil switching mode

[0056] The valve device includes a shut-off valve, a regulating valve, and a switching valve located on the first and second delivery pipelines, wherein the first and second pipelines are connected to a first oil supply pump, and the first oil supply pump is in the open state while the second oil supply pump is in the stopped state. Figure 4 As shown, for the pure oil switching mode, determining the opening and closing status of the valve devices and / or oil pumps on the corresponding delivery pipeline includes sequentially performing the following steps for the first delivery pipeline delivering the current oil type and the second delivery pipeline delivering the switched oil type:

[0057] Step S410: Close the switching valve on the second delivery pipeline, and sequentially open the shut-off valve, regulating valve and switching valve on the second delivery pipeline.

[0058] For example, combined Figure 1 As shown, the oil pump is designated as oil pump 50a, the current oil type being transported is refined oil A, and the oil type to be transported after the switch is refined oil B. The pipeline between the refined oil tank 10 storing refined oil A and oil pump 50a is the first transport pipeline, and the pipeline between the refined oil tank 10 storing refined oil B and oil pump 50a is the second transport pipeline. The electric gate valve 20, electric ball valve 40, and electric butterfly valve 30 of the first transport pipeline are all in the open state, while the electric gate valve 20 and electric ball valve 40 of the second transport pipeline are in the closed state, and the electric butterfly valve 30 is in the open state. Based on the above valve open / closed states, the electric butterfly valve 30 of the transport pipeline between the refined oil tank 10 storing refined oil B and oil pump 50a is closed first, and then the electric gate valve 40b, electric ball valve 50b, and electric butterfly valve 30 of the transport pipeline between the refined oil tank 10 storing refined oil B and oil pump 50a are opened sequentially. The purpose of this step is to prepare for the transportation of finished oil product B, ensuring a timely and effective transition during the subsequent oil type switching process.

[0059] Step S420: Sequentially close the switching valve, shut-off valve, and regulating valve on the first delivery pipeline.

[0060] For example, combined Figure 1 As shown, the electric butterfly valve 30a, electric ball valve 40, and electric gate valve 20 on the delivery pipeline between the finished oil tank 10 storing finished oil B and the oil pump 50a are closed in sequence to complete the switching of oil type.

[0061] As can be seen from the above steps S410 to S420, the embodiments of the present invention achieve seamless switching of oil types by controlling the opening and closing sequence of valve devices on the delivery pipeline, effectively reducing the increase in mixed oil volume.

[0062] (3) Hybrid switching mode

[0063] The valve device includes a shut-off valve and a regulating valve located on the first and second delivery pipelines, wherein the first and second delivery pipelines are respectively connected to the first and second oil supply pumps. The valve device also includes regulating valves located at the outlets of the first and second oil supply pumps, respectively. Figure 5 As shown, for the hybrid switching mode, determining the opening and closing status of the valve devices and / or feed pumps on the corresponding delivery pipelines includes sequentially performing the following steps for the currently operating first feed pump, the second feed pump intended to operate after the switch, the first delivery pipeline delivering the current oil type, and the second delivery pipeline delivering the switched oil type:

[0064] Step S510: Sequentially open the regulating valve and the shut-off valve on the second delivery pipeline.

[0065] For example, combined Figure 1 As shown, the currently operating first oil supply pump is oil supply pump 50a, and the second oil supply pump to be operated after the switch is oil supply pump 50b. The current oil type being transported is refined oil A, and the oil type to be transported after the switch is refined oil B. The pipeline connecting the refined oil tank 10 storing refined oil A and oil supply pump 50a is the first transport pipeline, and the pipeline connecting the refined oil tank 10 storing refined oil B and oil supply pump 50b is the second transport pipeline. First, the electric gate valve 20 and the electric ball valve 40 on the transport pipeline connecting the refined oil tank 10 storing refined oil B and oil supply pump 50b are opened sequentially. The purpose of this step is to prepare for the switch of oil type and oil supply pump.

[0066] Step S520: Control the opening degree of the regulating valve located at the outlet of the first oil pump to decrease.

[0067] For example, combined Figure 1 As shown, the opening degree of the electric gate valve 20 at the outlet of the oil pump 50b is reduced. For example, if the current opening degree of the electric gate valve 20 is 100%, the reduced opening degree is 60%. The purpose of this step is to reduce the pumping rate of finished oil A pumped by the current oil pump 50a.

[0068] Step S530: Start the second oil pump and control the opening degree of the regulating valve located at the outlet of the second oil pump to increase.

[0069] For example, combined Figure 1 As shown, after reducing the pumping rate of finished oil A from the current feed pump 50a, feed pump 50b is started, and the opening degree of the electric gate valve 20 located at the outlet of feed pump 50b is increased. For example, if the valve is initially closed with an opening degree of 0, its opening degree can be increased to 60%. The purpose of this step is to start pumping finished oil B from feed pump 50b while reducing the pumping rate of finished oil A from the current feed pump 50a, so as to achieve effective switching between oil type and feed pump.

[0070] Step S540: Control the opening degree of the regulating valve located at the outlet of the first oil pump to the minimum opening degree and shut down the first oil pump.

[0071] For example, combined Figure 1As shown, after the feed pump 50b starts pumping finished oil B, the opening degree of the electric gate valve 20 at the outlet of the feed pump 50a is reduced to the minimum opening degree. For example, the minimum opening degree can be set to 0, that is, the electric gate valve 20 at the outlet of the feed pump 50a is reduced from the 60% opening degree in step 520 above to 0, thereby closing the electric gate valve 20 and stopping the operation of the feed pump 50a. The purpose of this step is to close the electric gate valve 20 at the outlet of the currently operating feed pump 50a and shut down the feed pump 50a after the feed pump 50b, which is now operating after switching, is pumping finished oil B, effectively reducing the amount of mixed oil at the inlet of the long-distance pump caused by the oil type switching.

[0072] Step S550: Close the shut-off valve and regulating valve on the first delivery pipeline.

[0073] For example, combined Figure 1 As shown, after shutting down the oil supply pump 50a, the electric gate valve 20 and electric ball valve 40 on the delivery pipeline connecting the finished oil tank 10 storing finished oil A and the oil supply pump 50a are closed. The purpose of this step is to completely cut off the delivery of finished oil A.

[0074] Step S560: Control the opening degree of the regulating valve located at the outlet of the second oil pump to the maximum opening degree.

[0075] For example, combined Figure 1 As shown, after completely cutting off the supply of finished oil A, the opening degree of the electric gate valve 20 at the outlet of the feed pump 50b is increased to the maximum opening degree. For example, the maximum opening degree can be set to 100%, and the opening degree of the electric gate valve 20 at the outlet of the feed pump 50b is increased from the 60% opening degree in step S530 to 100% opening degree. The purpose of this step is to ensure the normal pumping of finished oil B via the feed pump 50b by adjusting the opening degree of the electric gate valve at the outlet of the feed pump 50b after completely cutting off the supply of finished oil A.

[0076] As can be seen from the above steps S510 to S560, the embodiments of the present invention effectively achieve simultaneous switching of oil type and oil pump during oil transportation by controlling the opening sequence of valves and oil pumps, while controlling the opening degree of valve devices to avoid safety risks caused by the impact on pipeline pressure during the switching process.

[0077] It should be noted that in the above three modes, the long-distance pump 50c and the electric gate valve 20 and electric ball valve 40 located at the outlet and inlet of the long-distance pump 50c are all kept in the open state.

[0078] In a preferred embodiment, after switching the type of oil being transported and / or the oil pump used to pump the oil, the oil transport control method further includes: monitoring the pipeline pressure of the transport pipeline in real time, and controlling the opening and closing degree of the regulating valve on the transport pipeline when the pipeline pressure exceeds a pressure threshold.

[0079] For example, after the switching between different modes is completed, embodiments of the present invention can also monitor the pressure of the delivery pipeline in real time by installing a sensor in the pipeline, and adjust the opening and closing degree of the valve device in real time according to the pressure requirements of the delivery pipeline, so that the pipeline pressure meets the required pressure range and avoids damage to the pipeline due to excessive pressure. This method can also be applied to the process of switching oil types and / or oil pumps.

[0080] In a preferred embodiment, the control duration for controlling the valve device and / or the oil pump to perform switching actions adapted to the corresponding opening and closing states meets a preset time threshold.

[0081] For example, in this embodiment of the invention, the preset time threshold can be set to 15 seconds, meaning the switching time for oil delivery methods is controlled within 15 seconds. It should be noted that this 15-second time threshold is only a preferred setting; those skilled in the art can flexibly set the time threshold based on the selection of the oil delivery equipment and actual needs. By setting the control duration, this embodiment of the invention ensures that the switching of delivery methods is completed within a short time, effectively reducing the increase in mixed oil and improving oil quality.

[0082] The embodiments of the present invention can also preset the switching cycle for oil or oil pump for periodic switching.

[0083] For example, embodiments of the present invention can preset switching conditions for oil product transportation mode switching and corresponding transportation switching modes based on the number of days of transportation for different oil products and / or the switching cycle of the fuel pump, so that when the preset switching conditions are met, the switching is performed according to the preset transportation switching mode. For example, on a long-distance transmission line with sequential transportation, based on 35 batches / year, the transportation days for a batch of gasoline, diesel, and jet fuel are 4 days, 5 days, and 1 day, respectively, and the fuel pump needs to be switched every 15 days. The transportation days are timed, let the transportation time for the above-mentioned gasoline, diesel, and jet fuel be n1, n2, and n3, and the operation time for different fuel pumps be m1 and m2. Starting from the beginning of gasoline transportation, when n1 = 4 and m1 < 15, it is determined that diesel transportation needs to be switched and no fuel pump input is required. The switching mode is determined to be the oil product switching mode, and the control of the oil product transportation switching mode is entered. When n2 = 1 and m1 = 15, it is determined that a fuel pump switch is required, but a fuel type switch is not required. The switching mode is determined to be the fuel pump switching mode, and the control enters the fuel pump delivery switching mode. When n3 = 1 and m2 = 15, it is determined that both fuel type and fuel pump switches are required. The switching mode is determined to be the mixed switching mode, and the control enters the mixed switching mode.

[0084] The embodiments of the present invention can preset switching conditions. When the preset switching conditions are met, the switching of oil delivery mode is automatically completed without manual operation, thereby realizing the automated operation of oil delivery.

[0085] In summary, the oil transportation control method of this invention has the following advantages: 1) It can switch oil transportation modes without stopping the operation of the long-distance pump, achieving continuous and efficient oil transportation; 2) It reduces the number of pump stops and the interval time, avoiding the increase in mixed oil caused by pump stops and increasing economic benefits; 3) It avoids damage to pipeline equipment caused by frequent start-ups and shutdowns of long-distance pumps, reduces water hammer caused by the start-ups and shutdowns of long-distance pumps, and improves the safety of long-distance pipeline operation; 4) It can reduce the number of pump stops and the interval time when oil transportation tasks are tight, and transport a large amount of high-quality qualified oil, meeting the user's requirements for oil transportation volume and greatly improving customer satisfaction; 5) It ensures that the equipment is in good standby condition, and regularly switches the oil pump, improving the service life of the oil pump and thus improving transportation efficiency.

[0086] Accordingly, based on the same inventive concept as the above-described oil transportation control method, this embodiment of the invention also provides an oil transportation control device, which is connected to oil transportation equipment, such as... Figure 6 As shown, the oil delivery control device 600 includes:

[0087] The switching mode determination unit 610 is used to determine the corresponding transmission switching mode based on the switching requirements of the current oil transmission mode, wherein the transmission switching mode includes oil pump switching mode, pure oil switching mode and mixed switching mode.

[0088] The switching sequence determination unit 620 is used to determine the opening and closing status of valve devices and / or oil pumps on the corresponding delivery pipeline based on the determined delivery switching mode.

[0089] The control unit 630 is configured to control the valve device and / or the oil pump to perform switching actions adapted to the corresponding opening and closing states, based on the determined opening and closing states of the corresponding valve device and / or the oil pump, under the condition that the long-distance pump is open, so as to switch the oil and / or switch the oil pump within a preset time period.

[0090] This invention also provides an oil conveying system, which includes the aforementioned oil conveying control device, wherein the oil conveying control device can control various valve devices and pumping devices on the oil conveying equipment.

[0091] This invention also provides an oil delivery control device, which includes: a memory storing a program that can run on a processor; and the processor configured to implement the oil delivery control method described in the above embodiments when executing the program.

[0092] The aforementioned switching mode determination unit, switching sequence determination unit, and control unit are all stored as program units in the memory, and the processor executes the aforementioned program units stored in the memory to realize the corresponding functions.

[0093] The processor contains a kernel, which retrieves the corresponding program unit from memory. One or more kernels can be configured, and adjusting kernel parameters can switch the type of oil being delivered and / or the feed pump used to pump the oil.

[0094] The memory may include non-permanent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM, and the memory includes at least one memory chip.

[0095] This invention provides a storage medium storing a program that, when executed by a processor, implements the oil delivery control method.

[0096] This invention provides a device including a processor, a memory, and a program stored in the memory and executable on the processor. When the processor executes the program, it implements the aforementioned oil delivery control method. The device described herein can be a server, PC, PAD, mobile phone, etc.

[0097] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0098] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0099] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0100] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0101] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0102] Memory may include non-persistent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. Memory is an example of computer-readable media.

[0103] Computer-readable media includes both permanent and non-permanent, removable and non-removable media that can store information using any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic magnetic disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transient computer-readable media, such as modulated data signals and carrier waves.

[0104] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0105] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A method for controlling oil transport in an oil conveying system, characterized in that, The oil transportation equipment includes multiple transportation pipelines and multiple feed pumps connected to each of the multiple transportation pipelines. The multiple feed pumps are all connected to a long-distance pump. Each transportation pipeline is equipped with a finished oil tank and multiple valve devices. The oil transportation control method includes: Based on the need to switch the current oil transportation method, the corresponding transportation switching mode is determined, wherein the transportation switching mode includes oil pump switching mode, pure oil switching mode and mixed switching mode; Based on the determined delivery switching mode, determine the opening and closing status of the valve devices and / or oil pumps on the corresponding delivery pipeline; and Based on the determined opening and closing states of the corresponding valve device and / or feed pump, under the condition that the long-distance pump is open, control the valve device and / or the feed pump to perform switching actions adapted to the corresponding opening and closing states, so as to switch the oil type and / or switch the feed pump. The valve device includes a shut-off valve and a regulating valve located at the inlets of the first and second oil pumps, and a regulating valve located at the outlets of the first and second oil pumps, wherein the switching valves of the first and second oil pumps are connected to the same finished oil tank. For the aforementioned oil pump switching mode, determining the open / closed status of the valve devices and / or oil pumps on the corresponding delivery pipeline includes sequentially performing the following steps for the currently operating first oil pump and the second oil pump intended to operate after the switch: Open the shut-off valve and regulating valve located at the inlet of the second oil pump in sequence; The opening degree of the regulating valve located at the outlet of the first oil pump is reduced; Start the second oil supply pump and increase the opening degree of the regulating valve located at the outlet of the second oil supply pump; and The opening degree of the regulating valve located at the outlet of the first oil pump is reduced to the minimum opening degree, and the first oil pump is shut down while the opening degree of the regulating valve located at the outlet of the second oil pump is increased to the maximum opening degree.

2. The oil transportation control method according to claim 1, characterized in that, After switching the currently delivered oil type and / or the feed pump used to pump the oil, the oil delivery control method further includes: The pipeline pressure of the delivery pipeline is monitored in real time, and the opening and closing degree of the regulating valve on the delivery pipeline is controlled when the pipeline pressure exceeds the pressure threshold.

3. The oil transportation control method according to claim 1, characterized in that, The control duration for controlling the valve device and / or the oil pump to perform switching actions adapted to the corresponding opening and closing states meets a preset time threshold.

4. An oil conveying control device for an oil transportation equipment, characterized in that, The oil transportation equipment includes multiple transportation pipelines and multiple feed pumps connected to each of the multiple transportation pipelines. The multiple feed pumps are all connected to a long-distance pump. Each transportation pipeline is equipped with a finished oil tank and multiple valve devices. The oil transportation control device includes: The switching mode determination unit is used to determine the corresponding transmission switching mode based on the switching requirements of the current oil transmission mode, wherein the transmission switching mode includes oil pump switching mode, pure oil switching mode and mixed switching mode; The switching sequence determination unit is used to determine the opening and closing status of valve devices and / or oil pumps on the corresponding delivery pipeline based on the determined delivery switching mode; and The control unit is configured to, based on the determined open / closed state of the corresponding valve device and / or the feed pump, and under the condition that the long-distance pump is open, control the valve device and / or the feed pump to perform switching actions adapted to the corresponding open / closed state, so as to switch the oil type and / or switch the feed pump within a preset time period. The valve device includes a shut-off valve and a regulating valve located at the inlets of the first and second oil supply pumps, and a regulating valve located at the outlets of the first and second oil supply pumps. The switching valves for the first and second oil supply pumps are connected to the same finished oil tank. For the oil supply pump switching mode, determining the open / closed state of the valve device and / or oil supply pump on the corresponding delivery pipeline includes sequentially performing the following steps for the currently operating first oil supply pump and the second oil supply pump intended for operation after the switch: Open the shut-off valve and regulating valve located at the inlet of the second oil pump in sequence; The opening degree of the regulating valve located at the outlet of the first oil pump is reduced; Start the second oil supply pump and increase the opening degree of the regulating valve located at the outlet of the second oil supply pump; and The opening degree of the regulating valve located at the outlet of the first oil pump is reduced to the minimum opening degree, and the first oil pump is shut down while the opening degree of the regulating valve located at the outlet of the second oil pump is increased to the maximum opening degree.

5. An oil product conveying control device, characterized in that, The oil delivery control device includes: Memory, which stores programs that can run on a processor; and The processor is configured to implement the oil delivery control method according to any one of claims 1-3 when executing the program.

6. An oil conveying system, characterized in that, The oil delivery system includes the oil delivery control device as described in claim 4 or 5.

7. A machine-readable storage medium storing instructions for causing a machine to perform the oil delivery control method according to any one of claims 1-3.

Images