CN117366473A - Oil product conveying control method and device of oil conveying equipment and oil product conveying system - Google Patents
Oil product conveying control method and device of oil conveying equipment and oil product conveying system Download PDFInfo
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- CN117366473A CN117366473A CN202210771110.2A CN202210771110A CN117366473A CN 117366473 A CN117366473 A CN 117366473A CN 202210771110 A CN202210771110 A CN 202210771110A CN 117366473 A CN117366473 A CN 117366473A
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- 238000000034 method Methods 0.000 title claims abstract description 53
- 230000009471 action Effects 0.000 claims abstract description 13
- 230000001276 controlling effect Effects 0.000 claims description 37
- 230000001105 regulatory effect Effects 0.000 claims description 37
- 238000005086 pumping Methods 0.000 claims description 19
- 238000003860 storage Methods 0.000 claims description 12
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims 1
- 238000002156 mixing Methods 0.000 abstract description 9
- 239000003921 oil Substances 0.000 description 454
- 230000008569 process Effects 0.000 description 15
- 238000012546 transfer Methods 0.000 description 14
- 238000010586 diagram Methods 0.000 description 13
- 238000004590 computer program Methods 0.000 description 7
- 239000002283 diesel fuel Substances 0.000 description 5
- 230000006870 function Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000003350 kerosene Substances 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
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- 238000002716 delivery method Methods 0.000 description 1
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- 239000012530 fluid Substances 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/08—Pipe-line systems for liquids or viscous products
- F17D1/086—Pipe-line systems for liquids or viscous products for explosives
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/08—Pipe-line systems for liquids or viscous products
- F17D1/14—Conveying liquids or viscous products by pumping
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
Abstract
The embodiment of the invention provides an oil product conveying control method and device of oil conveying equipment and an oil product conveying system, and belongs to the technical field of pipeline conveying. The oil product conveying control method comprises the following steps: determining a corresponding conveying switching mode based on the switching requirement of the current oil conveying mode, wherein the conveying switching mode comprises an oil feeding pump switching mode, a pure oil switching mode and a mixed switching mode; determining an open/closed state of the valve device and/or the oil feed pump on the corresponding delivery line based on the determined delivery switching pattern; and according to the determined opening and closing states of the corresponding valve device and/or the oil feed pump, under the condition that the long-distance conveying pump is opened, the valve device and/or the oil feed pump is controlled to execute the opening and closing actions which are suitable for the corresponding opening and closing states so as to switch the oil product and/or the oil feed pump within the preset time period. The embodiment of the invention can realize uninterrupted continuous conveying of various oil products, reduce the increment of oil mixing and improve the conveying efficiency and safety of the oil products.
Description
Technical Field
The invention relates to the technical field of pipeline transportation, in particular to an oil transportation control method and device of oil transportation equipment and an oil transportation system.
Background
Currently, the superiority of using pipelines to transport finished oil is widely recognized worldwide. Because gasoline, diesel oil and aviation kerosene have the characteristics of inflammability, explosiveness, higher vapor pressure, volatility and the like and are liquid substances with strong liquidity, the pipeline transportation is a closed transportation mode with advanced technology, economy, rationality, safety and reliability in the aspects of technology, economy and environmental protection.
The currently adopted sequential conveying is a conveying process for conveying a plurality of oil products with the same flow direction to a consuming place along the same pipeline according to a certain sequence. The conveying process can generate mixed oil at the interface of different oil products when the types of the oil products are switched and conveyed, so that a mixed oil section containing front and rear oil products is formed. Because the oil blending section generally does not meet the quality index of either of the two oils, it is necessary to recover and further process the oil.
Therefore, the intermittent conveying mode is adopted for conveying the finished oil through the pipeline in order to reduce the oil mixing section. For example, refinery or oil depot gasoline, diesel oil and aviation kerosene are intermittently transported to downstream oil depots through the same pipeline and distributed to individual users by sales companies. In the intermittent operation method, after the transportation of one oil product is completed, the long-distance transportation of the oil pump and the booster pump is firstly suspended when the next oil product is needed to be switched, then the operation of the oil pipeline is switched, and further the long-distance transportation of the oil pump is started. However, such operations not only can cause waste of valuable tubing transportation time during oil switching, but can also increase the safety risk of long-distance tubing due to long-distance pump start-stop. Thus, current intermittent delivery methods are undoubtedly increasing the quality control risks and operational management risks of the oil during delivery.
Disclosure of Invention
The embodiment of the invention aims to provide an oil conveying control method and device of oil conveying equipment and an oil conveying system, which are used for at least partially solving the technical problems.
In order to achieve the above object, in a first aspect, an embodiment of the present invention provides an oil delivery control method for an oil delivery device, where the oil delivery device includes a multiple-way delivery pipeline and a plurality of oil pumps correspondingly communicated with the multiple-way delivery pipeline, the plurality of oil pumps are commonly communicated with a long-distance delivery pump, where each way of delivery pipeline is correspondingly provided with a product oil tank and a plurality of valve devices; the oil product conveying control method comprises the following steps: determining a corresponding conveying switching mode based on the switching requirement of the current oil conveying mode, wherein the conveying switching mode comprises an oil feeding pump switching mode, a pure oil switching mode and a mixed switching mode; determining an open/closed state of the valve device and/or the oil feed pump on the corresponding delivery line based on the determined delivery switching pattern; and controlling the valve device and/or the oil feed pump to execute a switching action adapted to the corresponding opening and closing state according to the determined opening and closing state of the corresponding valve device and/or the oil feed pump under the condition that the long-distance conveying pump is opened, so as to switch oil products and/or switch the oil feed pump within a preset time period.
Optionally, the valve device comprises a cut-off valve and a regulating valve at the inlet of the first oil feed pump and the second oil feed pump and a regulating valve at the outlet of the first oil feed pump and the second oil feed pump, wherein the first oil feed pump and the second oil feed pump switching valve are communicated with the same product oil tank; for the feed pump switching mode, determining the open-closed state of the valve means and/or feed pump on the corresponding delivery line comprises, for a first feed pump currently operating and a second feed pump intended to operate after switching, performing the following steps in sequence: sequentially opening a cut-off valve and an adjusting valve which are positioned at the inlet of the second oil feed pump; controlling the opening and closing degree of an adjusting valve positioned at the outlet of the first oil feed pump to be reduced; starting the second oil feed pump, and controlling the opening and closing degree of an adjusting valve at the outlet of the second oil feed pump to be increased; and controlling the opening and closing degree of the regulating valve at the outlet of the first oil feed pump to be reduced to the minimum opening and closing degree, and stopping the first oil feed pump and controlling the opening and closing degree of the regulating valve at the outlet of the second oil feed pump to be increased to the maximum opening and closing degree.
Optionally, the valve device comprises a cut-off valve, a regulating valve and a switching valve which are positioned on a first path of conveying pipeline and a second path of conveying pipeline, wherein the first path of conveying pipeline and the second path of conveying pipeline are commonly connected with an oil feeding pump; for the pure oil switching mode, determining the open-closed state of the valve device and/or the oil feed pump on the corresponding conveying pipeline comprises sequentially performing the following steps for a first conveying pipeline conveying the current oil type and a second conveying pipeline conveying the switched oil type: sequentially opening a cut-off valve, an adjusting valve and a switching valve on the second pipeline under the condition that the switching valve on the second pipeline is closed and the first oil feeding pump is opened; and sequentially closing the switching valve, the cut-off valve and the regulating valve on the first path of conveying pipeline.
Optionally, the valve device comprises a shut-off valve and a regulating valve which are positioned on a first path of conveying pipeline and a second path of conveying pipeline, wherein the first path of conveying pipeline and the second path of conveying pipeline are respectively connected with the first oil feed pump and the second oil feed pump, and the valve device further comprises a regulating valve which is positioned at the outlet of the first oil feed pump and the outlet of the second oil feed pump respectively; for the hybrid switching mode, determining the open-closed state of the valve device and/or the oil feed pump on the corresponding delivery line comprises sequentially performing the following steps for a first oil feed pump currently in operation, a second oil feed pump intended to be operated after switching, a first delivery line delivering the current oil type, and a second delivery line delivering the switched oil type: sequentially opening the regulating valve and the cut-off valve on the second path of conveying pipeline; controlling the opening and closing degree of the regulating valve at the outlet of the first oil feed pump to be reduced; starting the second oil feed pump, and controlling the opening and closing degree of the regulating valve at the outlet of the second oil feed pump to be increased; controlling the opening and closing degree of the regulating valve at the outlet of the first oil feed pump to be the minimum opening and closing degree and closing the first oil feed pump; closing the shut-off valve and the regulating valve on the first path of conveying pipeline; and controlling the opening and closing degree of the regulating valve at the outlet of the second oil feeding pump to be the maximum opening and closing degree.
Optionally, after switching the type of the currently delivered oil and/or the oil feed pump for pumping the oil, the oil delivery control method further comprises: and monitoring the pipeline pressure of the conveying pipeline in real time, and controlling the opening and closing degree of the regulating valve on the conveying pipeline when the pipeline pressure exceeds a pressure threshold value.
Optionally, a control duration for controlling the valve means and/or the oil feed pump to perform a switching action adapted to the respective open-closed state satisfies a preset time threshold.
In a second aspect, an embodiment of the present invention provides an oil delivery control device for an oil delivery apparatus, where the oil delivery apparatus includes a multiple-way delivery pipeline and a plurality of oil pumps correspondingly communicated with the multiple-way delivery pipeline, where the plurality of oil pumps are commonly communicated with a long-distance delivery pump, and each way of delivery pipeline is correspondingly provided with a product oil tank and a plurality of valve devices; the oil product conveying control device comprises: the switching mode determining unit is used for determining a corresponding conveying switching mode based on the switching requirement on the current oil conveying mode, wherein the conveying switching mode comprises an oil feeding pump switching mode, a pure oil switching mode and a mixed switching mode; a switching sequence determining unit for determining an open/closed state of the valve device and/or the oil feed pump on the corresponding delivery line based on the determined delivery switching pattern; and the control unit is used for controlling the valve device and/or the oil feed pump to execute a switching action suitable for the corresponding opening and closing state according to the determined opening and closing state of the corresponding valve device and/or the oil feed pump under the condition that the long-distance conveying pump is opened so as to switch oil products and/or switch the oil feed pump within a preset time period.
In a third aspect, an embodiment of the present invention provides an oil delivery control apparatus, including: a memory storing a program capable of running on a processor; and the processor is configured to implement the oil delivery control method of any one of the above first aspects when executing the program.
In a fourth aspect, an embodiment of the present invention provides an oil delivery system, where the oil delivery system includes the oil delivery control device in the second aspect or the third aspect.
In a fifth aspect, an embodiment of the present invention provides a machine-readable storage medium having stored thereon instructions for causing a machine to perform the oil delivery control method of any one of the first aspects.
Through the technical scheme, the embodiment of the invention can realize uninterrupted continuous conveying of various oil products, reduce oil mixing increment, simultaneously avoid safety risk to pipelines caused by long-distance pump shut-down, effectively improve the efficiency and safety of oil product conveying, save oil resources and improve economic benefit.
Additional features and advantages of embodiments of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings are included to provide a further understanding of embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain, without limitation, the embodiments of the invention. In the drawings:
FIG. 1 is a schematic diagram of an oil delivery apparatus according to an exemplary embodiment;
FIG. 2 is a schematic flow diagram of an oil delivery control method for an oil delivery apparatus according to an exemplary embodiment;
FIG. 3 is a control flow diagram illustrating a mode of switching an oil feed pump according to an exemplary embodiment;
FIG. 4 is a control flow diagram illustrating a pure oil switching mode according to an exemplary embodiment;
FIG. 5 is a control flow diagram illustrating a hybrid switching mode according to an exemplary embodiment;
FIG. 6 is a schematic block diagram of an oil delivery control device according to an exemplary embodiment.
Description of the reference numerals
10: a finished oil tank; 20: an electric gate valve; 30: an electric butterfly valve; 40: an electric ball valve; 50a: a first oil feed pump; 50b: a second oil feed pump; 50c: long-distance delivery pump.
Detailed Description
The following describes the detailed implementation of the embodiments of the present invention with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the invention, are not intended to limit the invention.
In general, when oil is transported, the oil needs to be pressurized by an oil feed pump and a long-distance transport pump to be able to achieve long-distance transport on a transport line. The intermittent conveying mode adopted at present is that different oils are conveyed along the same long conveying line, when the oils are switched, the long conveying pump and the oil feeding pump are required to be suspended, after the oil is switched, the long conveying pump and the oil feeding pump are restarted, so that precious conveying time is wasted when the oils are switched, two different oils are caused to be alternately in the oil pipeline due to the flow state change in the pipeline, the wedge-shaped oil which is fed into the pipeline later enters the oil which is in the pipeline at the earlier stage, mixed oil is formed, the longer the suspension time is, the longer the mixed oil distance generated by the liquid oil in the pipeline is, the larger the mixed oil is finally caused, and meanwhile, the effective utilization rate of the finished oil is reduced. In addition, the intermittent conveying mode also causes damage to the pipeline due to the 'water hammer' effect due to frequent start and stop of the pump, and has great potential safety hazard.
In order to solve the above problems, the oil delivery device according to the embodiment of the present invention includes a multiplex delivery pipeline and a plurality of oil pumps correspondingly communicated with the multiplex delivery pipeline, the plurality of oil pumps being commonly communicated with a long-distance delivery pump; wherein each conveying pipeline is correspondingly provided with a finished oil tank and a valve device. The oil is output from the corresponding product tank and is transported along the transportation pipeline for a long distance by the pumping forces of the oil feeding pump and the long-distance transportation pump. Fig. 1 is a schematic view of an oil delivery apparatus according to an exemplary embodiment, and as shown in fig. 1, the oil delivery apparatus includes a multi-way delivery line, wherein one end of the delivery line is provided with a product tank 10 storing different oil types, in which product oil a, product oil B, and product oil C are stored, respectively. The valve device mainly comprises a cut-off valve, a switching valve and an adjusting valve. In the embodiment of the invention, an electric ball valve is used as a cut-off valve, an electric gate valve is used as an adjusting valve, and an electric butterfly valve is used as a switching valve. An electric gate valve 20 and an electric butterfly valve 30 are sequentially arranged at the outlet of each product oil tank 10. The oil delivery apparatus in fig. 1 includes two oil feed pumps, namely, an oil feed pump 50a and an oil feed pump 50b, and each product tank 10 is respectively communicated with the oil feed pump 50a and the oil feed pump 50b, and an electric gate valve 20 and an electric ball valve 40 are respectively provided on the communicated delivery lines. The electric gate valves 20 are provided at the outlets of the first oil feed pump 50a and the oil feed pump 50b, respectively. The oil feed pump 50a and the oil feed pump 50b are commonly connected to the long-distance pump 50c, and the electric ball valve 40 and the electric gate valve 20 are respectively provided at the inlet and outlet of the long-distance pump 50 c.
Based on the above oil transportation equipment, the embodiment of the invention discloses a flow diagram of an oil transportation control method, as shown in fig. 2, the oil transportation control method comprises the following steps:
step S210, determining a corresponding conveying switching mode based on the switching requirement of the current oil conveying mode.
The conveying switching mode comprises an oil feeding pump switching mode, a pure oil switching mode and a mixing switching mode. The oil feed pump switching mode refers to stopping the current operation of the oil feed pump to pump the product oil, and changing the operation of the oil feed pump after switching to pump the product oil. The pure oil switching mode is to stop conveying the current oil type and change the conveying switching mode into the oil type after conveying switching. The hybrid switching mode refers to stopping the currently running oil feed pump from pumping the currently conveyed product oil type and changing the type into the type of the finished oil after switching.
For example, in connection with fig. 1, assuming that the type of product oil currently being delivered is product oil a and the operating oil feed pump is oil feed pump 50a, the delivery mode switching requirements include:
1) The type of finished oil delivered is switched. For example, if the type of product oil being delivered is changed from product oil a to product oil B and the operating oil feed pump is still oil feed pump 50a, then the delivery change-over mode determined for that change-over demand is a pure oil change-over mode.
2) And switching the running oil feed pump. For example, if the operating oil feed pump is switched from the oil feed pump 50a to the oil feed pump 50b and the type of product oil to be fed is still product oil a, the feed switching mode determined for the switching demand is the oil feed pump switching mode.
3) The product oil type and the oil feed pump are switched simultaneously. For example, if the operating oil feed pump is switched from the oil feed pump 50a to the oil feed pump 50B and the type of the delivered product oil is switched from the product oil a to the product oil B, the delivery switching mode determined for the switching demand is the hybrid switching mode.
Step S220 of determining an open/closed state of the valve device and/or the oil feed pump on the corresponding delivery line based on the determined delivery switching pattern.
For example, after determining the delivery switching mode, the current open-closed state of each valve device and/or oil feed pump on the corresponding delivery line and the switched open-closed state need to be determined for the determined delivery switching mode. Also taking the above-described example explanation as an example of the pure oil switching mode, when the switching mode is determined, the electric gate valve 20 and the electric ball valve 40 on the line delivering the product oil a (the line in which the product oil tank 10 storing the product oil a communicates with the oil feed pump 50 a) need to be switched from the current open state to the closed state, and the electric gate valve 20 and the electric gate valve 40 on the line delivering the product oil B (the line in which the product oil tank 10 storing the product oil B communicates with the oil feed pump 50 a) need to be switched from the current closed state to the open state.
And step S230, according to the determined opening and closing states of the corresponding valve device and/or the oil feed pump, under the condition that the long-distance conveying pump is opened, controlling the valve device and/or the oil feed pump to execute a switching action suitable for the corresponding opening and closing states so as to switch the type of the currently conveyed oil product and/or the oil feed pump for pumping the oil product.
For example, based on the open/close state determined in step S220, each valve device and the oil feed pump are controlled to sequentially perform corresponding switching actions for completing the disconnection and connection of the corresponding conveying pipeline in the corresponding switching mode. The specific control process will be described in detail in the following embodiments.
According to the above steps S210-S230, according to different switching requirements, the embodiment of the invention can realize the switching of the conveying modes under the condition of continuous output of oil products by controlling the valve device and/or the oil feeding pump on the conveying pipeline under the condition that the long-distance conveying pump is not stopped, thereby effectively reducing the safety risk caused by frequent start and stop of the long-distance conveying pump.
The following is a further detailed description of the three oil switching modes.
(1) Oil feed pump switching mode
The valve device comprises a cut-off valve and an adjusting valve which are positioned at the inlet of the first oil feed pump and the inlet of the second oil feed pump, and an adjusting valve which is positioned at the outlet of the first oil feed pump and the outlet of the second oil feed pump, wherein the first oil feed pump and the second oil feed pump switching valve are communicated with the same product oil tank. As shown in fig. 3, for the feed pump switching mode, determining the open-closed state of the valve device and/or feed pump on the corresponding delivery line includes sequentially performing the following steps for a first feed pump currently operating and a second feed pump intended to operate after switching:
Step S310, a cut-off valve and a regulating valve which are positioned at the inlet of the second oil feeding pump are sequentially opened.
For example, as shown in fig. 1, assuming that the type of product oil to be delivered is product oil a, the first oil feed pump currently operating is oil feed pump 50a, and the oil feed pump intended to be operated after switching is oil feed pump 50b. Specifically, the electric ball valve 40 and the electric gate valve 20 at the inlet of the oil feed pump 50b are sequentially opened. The delivery state at this time is such that the product oil a is still pumped by the oil feed pump 50a, and the delivery line between the product oil tank 10 storing the product oil a and the oil feed pump 50b is conducted due to the valve means at the inlet of the oil feed pump 50b being opened.
And step S320, controlling the opening and closing degree of the regulating valve at the outlet of the first oil feeding pump to be reduced.
For example, as shown in connection with fig. 1, when the valve means at the inlet of the oil feed pump 50b is opened, the opening and closing degree of the electric gate valve 20 at the outlet of the currently operated oil feed pump 50a is controlled to be reduced. For example, assuming that the current opening/closing degree of the electric gate valve 20 is 100%, the opening/closing degree after the reduction is 60%. The purpose of this step is to reduce the pumping capacity of the oil feed pump 50a for the product oil a by reducing the opening and closing degree of the electric gate valve 20 at the outlet of the current oil feed pump 50a after the oil feed pump 50b is ready to pump the product oil a.
Step S330, starting the second oil feed pump, and controlling the opening and closing degree of the regulating valve at the outlet of the second oil feed pump to increase.
For example, as shown in fig. 1, the oil feed pump 50b is started, and the oil feed pump 50b starts pumping the product oil a, and at this time, the opening and closing degree of the electric gate valve 20 at the outlet of the oil feed pump 50b is controlled to be increased. For example, the valve is in the initial state of closed state, and the opening and closing degree is 0, so that the opening and closing degree can be increased to 60%. The purpose of this step is to increase the pumping capacity of the switched oil feed pump 50b for the product oil a while decreasing the pumping capacity of the current oil feed pump 50a for the product oil a.
Step S340, controlling the opening and closing degree of the regulating valve at the outlet of the first oil feeding pump to be reduced to the minimum opening and closing degree, and stopping the first oil feeding pump and controlling the opening and closing degree of the regulating valve at the outlet of the second oil feeding pump to be increased to the maximum opening and closing degree.
For example, as shown in fig. 1, after the oil feed pump 50b starts pumping the product oil a, the opening and closing degree of the electric gate valve 20 at the outlet of the oil feed pump 50a is controlled to be reduced to the minimum opening and closing degree, for example, the minimum opening and closing degree may be set to 0, that is, the opening and closing degree of the electric gate valve 20 at the outlet of the oil feed pump 50a is reduced to 0 from 60% in the above step 320, thereby closing the electric gate valve 20, and stopping the operation of the oil feed pump 50 a. Further, the opening and closing degree of the electric gate valve 20 at the outlet of the oil feed pump 50b is controlled to be increased to the maximum opening and closing degree. For example, the maximum opening and closing degree may be set to 100%, and the opening and closing degree of the electric gate valve 20 at the outlet of the oil feed pump 50b is increased from 60% opening and closing degree to 100% opening and closing degree in the above step S330. The purpose of this step is to shut off pumping of the oil feed pump 50a after the oil feed pump 50b starts to operate, and to control the oil feed pump 50b to pump the product oil a at the maximum opening and closing degree, completing switching from the oil feed pump 50a to the oil feed pump 50 b.
In addition, in the above-mentioned oil feed pump switching mode, the electric gate valve 20, the electric ball valve 40 and the electric butterfly valve 30a which are connected to the electric gate valve 20 and the product tank 10 storing the product oil a at the inlet of the oil feed pump 50a are all kept in an open state, and are not required to be closed, so that the pressure in the conveying pipeline is balanced in the conveying mode switching process, and the safety of the conveying pipeline is ensured.
As can be seen from the steps S310 to S340, in the oil feed pump switching process of the embodiment of the invention, on one hand, the long-distance pump does not need to be stopped, so that the oil feed pump switching in the oil product conveying process is realized, and the continuous conveying of the oil product is ensured; on the other hand, through adjusting the degree of opening and shutting of corresponding valve device, effectively avoid the defect of the great pressure impact of transfer line in the adjustment process, under the circumstances of guaranteeing continuous transportation, improve the security of transfer line and oil feed pump.
(2) Pure oil switching mode
The valve device comprises a cut-off valve, an adjusting valve and a switching valve which are positioned on a first pipeline and a second pipeline, wherein the first pipeline and the second pipeline are connected with a first oil feeding pump together, the first oil feeding pump is in an open state, and the second oil feeding pump is in a stop state. As shown in fig. 4, for the pure oil switching mode, determining the open/close state of the valve device and/or the oil feed pump on the corresponding delivery line includes sequentially performing the following steps for a first delivery line delivering the current oil type and a second delivery line delivering the switched oil type:
Step S410, closing the switching valve on the second conveying pipeline, and sequentially opening the cut-off valve, the regulating valve and the switching valve on the second conveying pipeline.
For example, as shown in fig. 1, let-off oil pump be oil pump 50a, the type of oil currently delivered be product oil a, and the type of oil delivered after the switch be product oil B. The transfer line between the product oil tank 10 storing the product oil a and the oil feed pump 50a is a first-path transfer line, and the transfer line between the product oil tank 10 storing the product oil B and the oil feed pump 50a is a second-path transfer line. The electric gate valve 20, the electric ball valve 40 and the electric butterfly valve 30 of the first path of conveying pipeline are all in an open state, the electric gate valve 20 and the electric ball valve 40 on the second path of conveying pipeline are in a closed state, and the electric butterfly valve 30 is in an open state. Based on the above-mentioned valve opening and closing state, it is preferable to close the electric butterfly valve 30 on the transfer line between the product oil tank 10 storing the product oil B and the oil feed pump 50a, and to sequentially open the electric gate valve 40B, the electric ball valve 50B, and the electric butterfly valve 30 on the transfer line between the product oil tank 10 storing the product oil B and the oil feed pump 50 a. The step aims to perform a preparation action for conveying the finished oil B, so that timely and effective connection can be ensured in oil type switching in the subsequent step.
Step S420, sequentially closing a switching valve, a cut-off valve and an adjusting valve on the first path of conveying pipeline.
For example, as shown in fig. 1, the electric butterfly valve 30a, the electric ball valve 40 and the electric gate valve 20 on the transfer line between the product tank 10 storing the product oil B and the oil feed pump 50a are sequentially closed to complete the switching of the oil types.
As can be seen from the steps S410 to S420, in the embodiment of the present invention, the switching sequence of the valve device on the conveying pipeline is controlled to realize the connection and switching of the oil types, so as to effectively reduce the oil mixing increment.
(3) Hybrid switching mode
The valve device comprises a cut-off valve and an adjusting valve which are positioned on a first path of conveying pipeline and a second path of conveying pipeline, wherein the first path of conveying pipeline and the second path of conveying pipeline are respectively connected with the first oil feed pump and the second oil feed pump, and the valve device further comprises an adjusting valve which is positioned at the outlet of the first oil feed pump and the outlet of the second oil feed pump. As shown in fig. 5, for the hybrid switching mode, determining the open/closed state of the valve device and/or the oil feed pump on the corresponding delivery line includes sequentially performing the following steps for the first oil feed pump currently in operation, the second oil feed pump intended to be operated after switching, the first delivery line delivering the current oil type, and the second delivery line delivering the switched oil type:
And step S510, sequentially opening the regulating valve and the cut-off valve on the second path of conveying pipeline.
For example, as shown in fig. 1, let the first oil feed pump currently running be the oil feed pump 50a, the second oil feed pump intended to run after switching be the oil feed pump 50B, the type of the currently delivered oil be the product oil a, and the type of the delivered oil after switching be the product oil B. The transfer line that communicates between the product oil tank 10 storing the product oil a and the oil feed pump 50a is a first-path transfer line, and the transfer line that communicates between the product oil tank 10 storing the product oil B and the oil feed pump 50B is a second-path transfer line. First, the electric gate valve 20 and the electric ball valve 40 on the transfer line that communicates between the product tank 10 storing the product oil B and the oil feed pump 50B are sequentially opened. The purpose of this step is to perform the preparatory actions of oil type and oil feed pump switching.
And step S520, controlling the opening and closing degree of the regulating valve at the outlet of the first oil feeding pump to be reduced.
For example, as shown in fig. 1, the opening/closing degree of the electric gate valve 20 at the outlet of the oil feed pump 50b is controlled to be reduced, for example, the current opening/closing degree of the electric gate valve 20 is set to be 100%, and the reduced opening/closing degree is set to be 60%. The purpose of this step is to reduce the amount of pumping of product oil a via the current oil feed pump 50 a.
Step S530, starting the second oil feed pump, and controlling the opening and closing degree of the regulating valve at the outlet of the second oil feed pump to increase.
For example, as shown in fig. 1, after the pumping amount of the product oil a pumped by the current oil feed pump 50a is reduced, the oil feed pump 50b is started, and the opening and closing degree of the electric gate valve 20 at the outlet of the oil feed pump 50b is controlled to be increased, for example, the valve is initially in a closed state, and the opening and closing degree is 0, so that the opening and closing degree can be increased to 60%. The purpose of this step is to begin pumping of product oil B by oil feed pump 50B while reducing the amount of product oil a currently pumped by oil feed pump 50a so as to enable an efficient switching engagement of the oil type and oil feed pump.
And S540, controlling the opening and closing degree of the regulating valve at the outlet of the first oil feed pump to be the minimum opening and closing degree and stopping the first oil feed pump.
For example, as shown in fig. 1, after the oil feed pump 50B starts pumping the product oil B, the opening and closing degree of the electric gate valve 20 at the outlet of the oil feed pump 50a is controlled to be reduced to the minimum opening and closing degree. For example, the minimum opening and closing degree may be set to 0, that is, the opening and closing degree of the electric gate valve 20 at the outlet of the oil feed pump 50a is reduced to 0 from 60% in the above step 520, thereby closing the electric gate valve 20, and stopping the operation of the oil feed pump 50 a. The purpose of this step is to close the electric gate valve 20 at the outlet of the currently operated oil feed pump 50a and to shut down the oil feed pump 50a after the oil feed pump 50B operated after switching pumps the product oil B, so as to effectively reduce the amount of oil mixing at the inlet of the long-distance pump caused when the oil type switching is performed.
And step S550, closing the cut-off valve and the regulating valve on the first path of conveying pipeline.
For example, as shown in connection with fig. 1, after shutting down the oil feed pump 50a, the electric gate valve 20 and the electric ball valve 40 on the delivery line that communicates between the product tank 10 storing the product oil a and the oil feed pump 50a are closed. This step aims at completely cutting off the delivery of the product oil a.
And step S560, controlling the opening and closing degree of the regulating valve at the outlet of the second oil feeding pump to be the maximum opening and closing degree.
For example, as shown in fig. 1, after the delivery of the product oil a is completely cut off, the opening and closing degree of the electric gate valve 20 at the outlet of the oil feed pump 50b is controlled to be increased to the maximum opening and closing degree, for example, the maximum opening and closing degree may be set to 100%, and the opening and closing degree of the electric gate valve 20 at the outlet of the oil feed pump 50b is increased from 60% opening and closing degree to 100% opening and closing degree in step S530. The purpose of this step is to ensure normal pumping of the product oil B via the oil feed pump 50B by adjusting the opening and closing degree of the electric gate valve at the outlet of the oil feed pump 50B after the delivery of the product oil a is completely shut off.
As can be seen from the steps S510 to S560, according to the embodiment of the invention, by controlling the opening sequence of the valve and the oil feed pump, the simultaneous switching of the oil type and the oil feed pump in the oil conveying process is effectively realized, and meanwhile, the opening and closing degree of the valve device is controlled, so that the safety risk caused by the impact on the pipeline pressure in the switching process is avoided.
In the above three modes, the long-distance pump 50c and the electric gate valve 20 and the electric ball valve 40 at the outlet and inlet of the long-distance pump 50c are kept in an open state.
In a preferred embodiment, after switching the type of oil currently being delivered and/or the oil feed pump for pumping the oil, the oil delivery control method further comprises: and monitoring the pipeline pressure of the conveying pipeline in real time, and controlling the opening and closing degree of the regulating valve on the conveying pipeline when the pipeline pressure exceeds a pressure threshold value.
For example, after the above-mentioned switching for different switching modes is completed, the embodiment of the present invention may further monitor the pressure of the conveying pipeline in real time by arranging the sensing device in the pipeline, and adjust the opening and closing degree of the valve device in real time according to the pressure requirement for the conveying pipeline, so that the pipeline pressure meets the required pressure range, and damage to the pipeline caused by excessive pressure is avoided. The method can be equally applied to the switching process of oil types and/or oil feed pumps.
In a preferred embodiment, the control duration for controlling the valve means and/or the oil feed pump to perform the switching action adapted to the respective open/close state satisfies a preset time threshold.
For example, in the embodiment of the present invention, the preset time threshold may be set to 15s, that is, the switching duration of the oil delivery mode is controlled within 15 s. It should be noted that the time threshold 15s is only set preferably, and those skilled in the art can flexibly set the time threshold according to the type of the oil transportation device and the actual requirement. According to the embodiment of the invention, the control time length is set, so that the conveying mode switching is completed in a shorter time, the oil mixing increment is effectively reduced, and the oil quality is improved.
The embodiment of the invention can also preset the switching period of the oil product or the oil feeding pump so as to periodically switch.
For example, according to the embodiment of the invention, the switching conditions for switching the oil conveying mode and the conveying switching modes corresponding to the different switching conditions can be preset according to the conveying days of different oil products and/or the switching period of the oil feeding pump, so that the switching is performed according to the preset conveying switching modes when the preset switching conditions are met. For example, a long conveying line for conveying in sequence, in terms of 35 batches/year, the conveying days of one batch of gasoline, diesel oil and aviation kerosene are respectively 4 days, 5 days and 1 day, and every 15 days, the oil pump needs to be switched. And (3) counting the number of transportation days, setting transportation timings of the gasoline, the diesel oil and the aviation kerosene as n1, n2 and n3, setting operation timings of different oil feeding pumps as m1 and m2, and starting to transport the gasoline, judging that diesel oil transportation needs to be switched and oil feeding pump input does not need to be carried out when n1 = 4 and m1<15, determining that the switching mode is an oil transportation switching mode, and entering control of the oil transportation switching mode. When n2=1 and m1=15, it is determined that the oil feed pump is required to be switched, and the oil type is not required to be switched, and if the switching mode is determined to be the oil feed pump switching mode, the control of the oil feed pump conveying switching mode is entered. When n3=1 and m2=15, it is determined that oil type and oil feed pump switching are required simultaneously, and if it is determined that the switching mode is a hybrid switching mode, control of the hybrid switching mode is entered.
The embodiment of the invention can preset the switching conditions, and when the preset switching conditions are met, the switching of the oil conveying mode is automatically completed, and the automatic operation of oil conveying is realized without manual operation.
In summary, the oil product conveying control method provided by the embodiment of the invention has the following advantages: 1) Under the condition that the long-distance delivery pump is not stopped, the oil delivery mode is switched, and continuous and efficient delivery of oil is realized; 2) The times and the interval time of pump stopping are reduced, the oil mixing increment caused by pump stopping is avoided, and the economic benefit is increased; 3) The damage to the pipeline equipment caused by frequent start and stop of the long-distance pump is avoided, the water hammer generated by fluid in the long-distance pipeline caused by the start and stop of the long-distance pump is reduced, and the running safety of the long-distance pipeline is improved; 4) The times and the interval time of pump stopping can be reduced under the condition of tight oil conveying tasks, and high-quality qualified oil materials can be conveyed in a large quantity, so that the requirement of users on oil conveying capacity is met, and the customer satisfaction is greatly improved; 5) The equipment is ensured to be in a perfect standby state, the oil feed pump is periodically switched, the service life of the oil feed pump is prolonged, and the conveying efficiency is further improved.
Accordingly, based on the same inventive concept as the oil delivery control method described above, the embodiment of the present invention further provides an oil delivery control device, where the oil delivery control device is connected to an oil delivery apparatus, as shown in fig. 6, and the oil delivery control device 600 includes:
The switching mode determining unit 610 is configured to determine a corresponding delivery switching mode based on a switching requirement for a current oil delivery mode, where the delivery switching mode includes an oil feed pump switching mode, a pure oil delivery switching mode, and a mixed switching mode.
A switching sequence determining unit 620 for determining the open/close state of the valve device and/or the oil feed pump on the corresponding delivery line based on the determined delivery switching pattern.
And the control unit 630 is configured to control the valve device and/or the oil feed pump to perform a switching action adapted to the corresponding open/close state according to the determined open/close state of the corresponding valve device and/or the oil feed pump under the condition that the long-distance pump is opened, so as to switch the oil product and/or the oil feed pump within a preset period of time.
The embodiment of the invention also provides an oil product conveying system, which comprises the oil product conveying control device, wherein the oil product conveying control device can control each valve device and each pumping device on the oil product conveying equipment.
The embodiment of the invention also provides an oil product conveying control device, which comprises: a memory storing a program capable of running on a processor; and the processor is configured to implement the oil delivery control method according to the above embodiment when executing the program.
Wherein the switching mode determining unit, the switching sequence determining unit, the control unit and the like are stored in the memory as program units, and the processor executes the program units stored in the memory to realize corresponding functions.
The processor includes a kernel, and the kernel fetches the corresponding program unit from the memory. The core may be provided with one or more cores for switching the type of oil currently being delivered and/or the oil feed pump for pumping the oil by adjusting the core parameters.
The memory may include volatile memory, random Access Memory (RAM), and/or nonvolatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM), among other forms in computer readable media, the memory including at least one memory chip.
The embodiment of the invention provides a storage medium, wherein a program is stored on the storage medium, and the program realizes the oil product conveying control method when being executed by a processor.
The embodiment of the invention provides equipment, which comprises a processor, a memory and a program which is stored in the memory and can run on the processor, wherein the processor realizes the oil product conveying control method when executing the program. The device herein may be a server, PC, PAD, cell phone, etc.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may 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, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may 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, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In one typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include volatile memory in a computer-readable medium, random Access Memory (RAM) and/or nonvolatile memory, etc., such as Read Only Memory (ROM) or flash RAM. Memory is an example of a computer-readable medium.
Computer readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of storage media for a computer 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 technology, compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium, which can be used to store information that can be accessed by a computing device. Computer-readable media, as defined herein, does not include transitory computer-readable media (transmission media), such as modulated data signals and carrier waves.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises an element.
The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and changes may be made to the present application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. which are within the spirit and principles of the present application are intended to be included within the scope of the claims of the present application.
Claims (10)
1. The oil conveying control method of the oil conveying equipment is characterized in that the oil conveying equipment comprises a plurality of conveying pipelines and a plurality of oil feeding pumps correspondingly communicated with the plurality of conveying pipelines, the plurality of oil feeding pumps are communicated with a long-distance conveying pump together, and each conveying pipeline is correspondingly provided with a finished oil tank and a plurality of valve devices; the oil product conveying control method comprises the following steps:
determining a corresponding conveying switching mode based on the switching requirement of the current oil conveying mode, wherein the conveying switching mode comprises an oil feeding pump switching mode, a pure oil switching mode and a mixed switching mode;
determining an open/closed state of the valve device and/or the oil feed pump on the corresponding delivery line based on the determined delivery switching pattern; and
and controlling the valve device and/or the oil feed pump to execute a switching action suitable for the corresponding opening and closing state under the condition that the long-distance conveying pump is opened according to the determined opening and closing state of the corresponding valve device and/or the oil feed pump so as to switch oil products and/or switch the oil feed pump.
2. The oil delivery control method of claim 1 wherein said valve means comprises shut-off and regulator valves at the inlets of a first oil feed pump and a second oil feed pump and regulator valves at the outlets of said first oil feed pump and said second oil feed pump, wherein said first oil feed pump and said second oil feed pump switch valves are in communication with the same product tank; for the feed pump switching mode, determining the open-closed state of the valve means and/or feed pump on the corresponding delivery line comprises, for a first feed pump currently operating and a second feed pump intended to operate after switching, performing the following steps in sequence:
sequentially opening a cut-off valve and an adjusting valve which are positioned at the inlet of the second oil feed pump;
controlling the opening and closing degree of an adjusting valve positioned at the outlet of the first oil feed pump to be reduced;
starting the second oil feed pump, and controlling the opening and closing degree of an adjusting valve at the outlet of the second oil feed pump to be increased; and
and controlling the opening and closing degree of the regulating valve at the outlet of the first oil feed pump to be reduced to the minimum opening and closing degree, and stopping the first oil feed pump and controlling the opening and closing degree of the regulating valve at the outlet of the second oil feed pump to be increased to the maximum opening and closing degree.
3. The oil delivery control method according to claim 1, wherein the valve means comprises a shut-off valve, a regulating valve and a switching valve in a first delivery line and a second delivery line, wherein the first delivery line and the second delivery line are commonly connected to an oil feed pump; for the pure oil switching mode, determining the open-closed state of the valve device and/or the oil feed pump on the corresponding conveying pipeline comprises sequentially performing the following steps for a first conveying pipeline conveying the current oil type and a second conveying pipeline conveying the switched oil type:
closing a switching valve on the second conveying pipeline, and sequentially opening a cut-off valve, an adjusting valve and a switching valve on the second conveying pipeline; and
and sequentially closing the switching valve, the cut-off valve and the regulating valve on the first path of conveying pipeline.
4. The oil delivery control method according to claim 1, wherein the valve device includes a shut-off valve and a regulating valve in a first delivery line and a second delivery line, respectively, which connect the first oil feed pump and the second oil feed pump, respectively, the valve device further including a regulating valve in outlets of the first oil feed pump and the second oil feed pump, respectively; for the hybrid switching mode, determining the open-closed state of the valve device and/or the oil feed pump on the corresponding delivery line comprises sequentially performing the following steps for a first oil feed pump currently in operation, a second oil feed pump intended to be operated after switching, a first delivery line delivering the current oil type, and a second delivery line delivering the switched oil type:
Sequentially opening an adjusting valve and a cut-off valve on the second path of conveying pipeline;
controlling the opening and closing degree of an adjusting valve positioned at the outlet of the first oil feed pump to be reduced;
starting the second oil feed pump, and controlling the opening and closing degree of the regulating valve at the outlet of the second oil feed pump to be increased;
controlling the opening and closing degree of an adjusting valve at the outlet of the first oil feed pump to be the minimum opening and closing degree and closing the first oil feed pump;
closing a cut-off valve and an adjusting valve on the first path of conveying pipeline;
and controlling the opening and closing degree of the regulating valve at the outlet of the second oil feeding pump to be the maximum opening and closing degree.
5. The oil delivery control method according to any one of claims 1 to 4, characterized in that after switching the type of oil currently delivered and/or an oil feed pump for pumping the oil, the oil delivery control method further comprises:
and monitoring the pipeline pressure of the conveying pipeline in real time, and controlling the opening and closing degree of the regulating valve on the conveying pipeline when the pipeline pressure exceeds a pressure threshold value.
6. The oil delivery control method according to claim 1, wherein a control duration for controlling the valve device and/or the oil feed pump to perform a switching action adapted to the respective open-close states satisfies a preset time threshold.
7. The oil conveying control device of the oil conveying equipment is characterized by comprising a plurality of conveying pipelines and a plurality of oil feeding pumps correspondingly communicated with the plurality of conveying pipelines, wherein the plurality of oil feeding pumps are communicated with a long-distance conveying pump together, and each conveying pipeline is correspondingly provided with a finished oil tank and a plurality of valve devices; the oil product conveying control device comprises:
the switching mode determining unit is used for determining a corresponding conveying switching mode based on the switching requirement on the current oil conveying mode, wherein the conveying switching mode comprises an oil feeding pump switching mode, a pure oil switching mode and a mixed switching mode;
a switching sequence determining unit for determining an open/closed state of the valve device and/or the oil feed pump on the corresponding delivery line based on the determined delivery switching pattern; and
and the control unit is used for controlling the valve device and/or the oil feed pump to execute a switching action suitable for the corresponding opening and closing state according to the determined opening and closing state of the corresponding valve device and/or the oil feed pump under the condition that the long-distance conveying pump is opened so as to switch oil products and/or switch the oil feed pump within a preset time period.
8. An oil delivery control device, characterized in that the oil delivery control device comprises:
A memory storing a program capable of running on a processor; and
the processor configured to implement the oil delivery control method of any of the above claims 1-6 when executing the program.
9. An oil delivery system comprising the oil delivery control device of claim 7 or 8.
10. A machine-readable storage medium having instructions stored thereon for causing a machine to perform the oil delivery control method of any of claims 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210771110.2A CN117366473A (en) | 2022-06-30 | 2022-06-30 | Oil product conveying control method and device of oil conveying equipment and oil product conveying system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210771110.2A CN117366473A (en) | 2022-06-30 | 2022-06-30 | Oil product conveying control method and device of oil conveying equipment and oil product conveying system |
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| CN117366473A true CN117366473A (en) | 2024-01-09 |
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| CN202210771110.2A Pending CN117366473A (en) | 2022-06-30 | 2022-06-30 | Oil product conveying control method and device of oil conveying equipment and oil product conveying system |
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| CN (1) | CN117366473A (en) |
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