A crude oil transmission flow monitoring and control device and control method

Abstract

A crude oil transmission flow monitoring and control device and control method, including a shell, the upper end face and the lower end face of the shell are both circular end faces, the first oil inlet pipe, the second oil inlet pipe and the third oil inlet pipe connected to the inside are fixedly connected at equal intervals around the shell, the first oil inlet pipe, the second oil inlet pipe and the third oil inlet pipe are all provided with an oil pressure gauge connected to an external signal receiving end for collecting the oil pressure in the pipe, and an oil pipeline connected to the inside for oil transportation to the outside is fixedly provided protruding outwardly in the middle of the upper end face of the shell, and the inside of the shell is provided with an oil quantity regulating mechanism for regulating the flow between the first oil inlet pipe, the second oil inlet pipe and the third oil inlet pipe and the oil pipeline according to the different pressures displayed by the oil pressure gauges on the first oil inlet pipe, the second oil inlet pipe and the third oil inlet pipe, and ensuring that the oil pipeline can maintain a stable output state. The present invention reduces the input oil pressure of the transmission pipeline, reduces the interference with the input flow of other branch pipelines, and achieves the effect of integrated analysis and management.

Description

Technical Field

[0001] The present invention relates to a crude oil transmission flow control method, and in particular to a crude oil transmission flow monitoring and control device and a control method. Background Art

[0002] An oil reservoir refers to a basic accumulation of oil in a single trap with the same pressure system. If only oil is accumulated in a trap, it is called an oil reservoir. Due to the different causes of oil reservoirs, the structural circles and heights of oil reservoirs are different. Therefore, when exploiting oil reservoirs, crude oil resources are often extracted from multiple oil wells. Therefore, the crude oil extraction flow rates are different, but they will eventually flow into the total output pipeline. During the extraction process, due to the different oil pressures in the branch input pipelines, the input pipeline with a larger oil pressure has a larger flow rate. The pipeline with a larger flow rate will hinder the input of crude oil from the input pipe with a smaller flow rate. The pressure change of a single input pipe will affect the flow of the remaining input pipes, causing fluctuations in the output of crude oil from the overall output pipeline, affecting the normal operation of crude oil transportation. Therefore, it is necessary to understand, analyze, and manage the oil reservoir situation in order to ensure the normal operation of crude oil transportation. The existing reservoir analysis and management system includes crude oil extraction module, transportation module, and monitoring module. However, the transmission speed between modules in the reservoir management system is slow, and the transmission of working condition information between equipment modules will affect the actual crude oil transportation process, reducing the management efficiency of the reservoir management system, which does not conform to the concept of intelligent production. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a crude oil transmission flow monitoring and control device and a control method that can reduce interference to a branch input pipe based on the switching of a main pipeline and a secondary pipeline.

[0004] The technical solution adopted by the present invention is: a crude oil transmission flow monitoring and control device, including a shell, the upper end face and the lower end face of the shell are both circular end faces, and the periphery of the shell is evenly spaced and fixedly connected with a first oil inlet pipe, a second oil inlet pipe and a third oil inlet pipe connected to the interior, and the first oil inlet pipe, the second oil inlet pipe and the third oil inlet pipe are all provided with an oil pressure gauge connected to an external signal receiving end for collecting the oil pressure in the pipe, and an oil pipeline connected to the interior for transporting oil to the outside is fixedly provided protruding outwardly in the middle of the upper end face of the shell, and the inside of the shell is provided with an oil quantity regulating mechanism for regulating the flow between the first oil inlet pipe, the second oil inlet pipe and the third oil inlet pipe and the oil pipeline according to the different pressures displayed by the oil pressure gauges on the first oil inlet pipe, the second oil inlet pipe and the third oil inlet pipe to ensure that the oil pipeline can maintain a stable output state.

[0005] A control method for a crude oil transmission flow monitoring and control device, comprising:

[0006] The pipeline flow rates of the first oil inlet pipe, the second oil inlet pipe and the third oil inlet pipe are set to V1, V2 and V3 respectively, and the pipeline pressures of the first oil inlet pipe, the second oil inlet pipe and the third oil inlet pipe are set to P1, P2 and P3 respectively;

[0007] When any one of the pipeline flow rates V1, V2 and V3 of the first oil inlet pipe, the second oil inlet pipe and the third oil inlet pipe is zero, the blade in the corresponding oil pipe does not rotate, that is, the alarm rotating frame on the oil pipe does not rotate, and the spring 18.2 resets and pushes the contact in the alarm device on the oil pipe to trigger the external alarm device to alarm;

[0008] When the oil pressure gauges provided on the first oil inlet pipe, the second oil inlet pipe and the third oil inlet pipe detect the pressures P1, P2 and P3 of the corresponding pipes:

[0009] When P1>P3 and P1>P2, or when P1>P3 and P3>P2, the first oil inlet pipe is judged to be the main delivery pipe, and the external control motor drives the rotating frame to rotate the disc body through the central axis, so that the first pipeline with a larger diameter is connected to the first oil inlet pipe, and the second pipeline and the third pipeline are connected to the remaining second oil inlet pipes and third oil inlet pipes;

[0010] When P2>P1 and P2>P3, or when P2>P1 and P1>P3, the second oil inlet pipe is judged to be the main delivery pipe; the motor is controlled to drive the rotating frame to rotate the disc body through the central axis, so that the first pipeline with a larger diameter is connected to the second oil inlet pipe, and the second pipeline and the third pipeline are connected to the remaining first oil inlet pipes and third oil inlet pipes;

[0011] When P3>P1 and P3>P2, or when P3>P1 and P1>P2, the third oil inlet pipe is judged as the main delivery pipe; the motor is controlled to drive the rotating frame to drive the disc body to rotate through the central axis, so that the first pipeline with a larger diameter is connected to the third oil inlet pipe, and the second pipeline and the third pipeline are connected to the remaining first oil inlet pipes and second oil inlet pipes.

[0012] The crude oil transmission flow monitoring and control device and control method of the present invention have the following beneficial effects:

[0013] 1. The present invention monitors and measures the crude oil transportation pressure and crude oil transportation flow rate in real time during pipeline transportation through a monitoring module, and feeds back the monitoring results to the host computer. When any of the input pipeline flow rate values ​​is zero, the flow rate is controlled to correspond to the working condition alarm of the pipeline. When the oil pressure of the branch input pipeline is too high, the branch pipeline is used as the main transmission pipeline to reduce the input oil pressure of the transmission pipeline and reduce the interference with the input flow of other branch pipelines, thereby achieving the effect of integrated analysis and management and improving the processing efficiency of the integrated reservoir analysis and management system.

[0014] 2. The present invention is connected with a disk body through internal rotation of the shell. When the oil pressure gauge in any input pipe detects a large change in oil pressure, the motor is controlled to rotate so that the driving gear is engaged with the toothed disc, and the driving gear drives the rotating frame and the disk body to rotate, so that the main pipeline rotates to connect with the input pipe with the highest oil pressure. At this time, the electromagnet corresponding to the input pipe with the highest oil pressure excites the attraction connecting rod group, so that the block extends until the rotating frame rotates and is stuck in the block, thereby limiting the continued rotation of the rotating frame. At this time, the input pipe with the highest oil pressure corresponds to the main pipeline, and the other input pipes with smaller oil pressures correspond to the auxiliary pipelines. The conveying diameter of the main pipeline is larger than that of the auxiliary pipeline. The main pipeline reduces the interference of the input crude oil with the highest oil pressure on the other input crude oils, thereby achieving the effect of reducing the interference to the branch input pipe based on the switching of the main and auxiliary conveying pipelines, and reducing the volatility of the output crude oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the external structure of a crude oil transmission flow monitoring and control device of the present invention;

[0016] Figure 2 It is a structural schematic diagram of the crude oil transmission flow monitoring and control device of the present invention, in which no disk is arranged inside the housing;

[0017] Figure 3 It is a structural schematic diagram of a crude oil transmission flow monitoring and control device according to the present invention, in which a disk is arranged inside the housing;

[0018] Figure 4 yes Figure 3 Rear view of

[0019] Figure 5 It is a schematic diagram of the internal cross-section of the housing of the crude oil transmission flow monitoring and control device of the present invention;

[0020] Figure 6 It is a schematic diagram of the overall cross-sectional structure of a crude oil transmission flow monitoring and control device according to the present invention, in which a disk is arranged inside the housing;

[0021] Figure 7 It is a structural schematic diagram of a crude oil transmission flow monitoring and control device provided with a positioning mechanism according to the present invention;

[0022] Figure 8 yes Figure 6 A is a partial enlarged schematic diagram of the middle part.

[0023] In the figure

[0024] 1: Shell 1.1: Upper end surface

[0025] 1.2: Lower end surface 1.3: Guide groove

[0026] 2: First oil inlet pipe 3: Second oil inlet pipe

[0027] 4: The third oil inlet pipe 5: Oil delivery pipe

[0028] 6: Oil pressure gauge 7: Center axis

[0029] 8: Toothed disc 9: Rotating frame

[0030] 9.1: Horizontal frame 9.2: Vertical frame

[0031] 10: Disk 10.1: First pipeline

[0032] 10.2: Second pipeline 10.3: Third pipeline

[0033] 11: Motor 12: Driving gear

[0034] 13: Electromagnet 14: Connecting rod assembly

[0035] 15: Block 16: Through hole

[0036] 17: Groove 18: Alarm rotating rack

[0037] 18.1: Frame 18.2: Spring

[0038] 18.3: Centrifugal block 18.4: Contact

[0039] 19: shaft 20: connector

[0040] 21: Blade DETAILED DESCRIPTION

[0041] The following is a detailed description of a crude oil transmission flow monitoring and control device and a control method of the present invention in conjunction with the embodiments and drawings.

[0042] like Figure 1 , Figure 2 As shown, a crude oil transmission flow monitoring and control device of the present invention includes a shell 1, the upper end face 1.1 and the lower end face 1.2 of the shell 1 are both circular end faces, and the periphery of the shell 1 is evenly and fixedly connected with a first oil inlet pipe 2, a second oil inlet pipe 3 and a third oil inlet pipe 4 connected to the inside, and the first oil inlet pipe 2, the second oil inlet pipe 3 and the third oil inlet pipe 4 are all provided with an oil pressure gauge 6 connected to an external signal receiving end for collecting the oil pressure in the pipe, and an oil delivery pipe 5 for delivering oil to the outside is fixedly provided protruding outwardly from the middle part of the upper end face 1.1 of the shell 1, and the inside of the shell 1 is provided with an oil quantity regulating mechanism for regulating the flow between the first oil inlet pipe 2, the second oil inlet pipe 3 and the third oil inlet pipe 4 and the oil delivery pipe 5 according to the different pressures displayed by the oil pressure gauges 6 on the first oil inlet pipe 2, the second oil inlet pipe 3 and the third oil inlet pipe 4, and ensuring that the oil delivery pipe 5 can maintain a stable output state.

[0043] like Figure 2, Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown, the oil quantity regulating mechanism includes: a toothed disc 8, a rotating frame 9 and a disc body 10 arranged in sequence through the central axis 7 from the lower end surface 1.2 to the upper end surface 1.1 inside the housing 1, wherein the toothed disc 8 is fixed on the lower end surface 1.2 of the housing 1, one end of the central axis 7 is hinged on the toothed disc 8, the other end of the central axis 7 passes through one end of the rotating frame 9 and the center of the disc body 10 in sequence, and the central axis 7 is fixedly connected to the rotating frame 9 and the disc body 10, the other end of the rotating frame 9 is slidably connected to the lower end surface 1.2 of the housing 1, and the rotating frame 9 is provided with a device for driving the rotating frame 9 to The central shaft 7 is a driving mechanism that rotates along the circumference of the housing 1. The first pipeline 10.1, the second pipeline 10.2 and the third pipeline 10.3 are formed on the disc body 10 in a radial and equiangular manner. When the rotating frame 9 rotates, the central shaft 7 and the disc body 10 are driven to rotate with the rotating frame 9, so that the oil inlets of the first pipeline 10.1, the second pipeline 10.2 and the third pipeline 10.3 on the disc body 10 are respectively connected and communicated with the first oil inlet pipe 2, the second oil inlet pipe 3 and the third oil inlet pipe 4, and the oil outlets of the first pipeline 10.1, the second pipeline 10.2 and the third pipeline 10.3 are connected to the oil delivery pipe 5. The diameters of the second pipeline 10.2 and the third pipeline 10.3 are the same, and the diameter of the first pipeline 10.1 is larger than the diameters of the second pipeline 10.2 and the third pipeline 10.3.

[0044] like Figure 2 , Figure 5 As shown, the rotating frame 9 includes: a horizontal cross frame 9.1 arranged along the radial direction of the shell 1, one end of the horizontal cross frame 9.1 is fixedly connected to the central axis 7, and the other end of the horizontal cross frame 9.1 is integrally formed with a vertically arranged vertical frame 9.2, and the vertical frame 9.2 can be slidably embedded in a circle of guide grooves 1.3 formed on the lower end surface 1.2 of the shell 1 near the edge.

[0045] like Figure 5 , Figure 7As shown, the driving mechanism includes: a motor 11 arranged on the horizontal cross frame 9.1 of the rotating frame 9, the output end of the motor 11 passes through the horizontal cross frame 9.1 and is fixedly connected to a driving gear 12 located below the horizontal cross frame 9.1, the driving gear 12 is meshed with the toothed disc 8, when the motor 11 is driven, the driving gear 12 rotates along the toothed disc 8, driving the rotating frame 9 to rotate around the toothed disc 8, so that the central axis 7 fixedly connected to the rotating frame 9 and the disc body 10 fixedly connected to the central axis 7 rotate synchronously, and a group of positioning mechanisms are arranged on the first oil inlet pipe 2, the second oil inlet pipe 3 and the third oil inlet pipe 4 corresponding to the housing 1 when the first pipeline 10.1, the second pipeline 10.2 and the third pipeline 10.3 in the disc body 10 are rotated to connect and communicate with the first oil inlet pipe 2 or the second oil inlet pipe 3 or the third oil inlet pipe 4 to be connected, to position the disc body 10.

[0046] like Figure 2 , Figure 4 , Figure 7 As shown, the positioning mechanism includes: an electromagnet 13 arranged at the lower part of the first oil inlet pipe 2, the second oil inlet pipe 3 and the third oil inlet pipe 4, a connecting rod assembly 14 capable of being extended and retracted under the action of the electromagnet 13 is arranged on the side of the electromagnet 13 close to the housing 1, and a clamping block 15 is arranged on the top of the connecting rod assembly 14, a through hole 16 capable of penetrating the clamping block 15 is formed on the housing 1 corresponding to the clamping block 15, and a clamping block capable of being embedded in the through hole 16 is formed on the vertical frame 9.2 constituting the vertical part of the rotating frame 9 corresponding to the through hole 16. The groove 17 of the block 15, when the rotating frame 9 drives the disc body 10 to rotate so that the first pipeline 10.1 with the largest diameter in the disc body 10 is rotated to connect with the first oil inlet pipe 2 or the second oil inlet pipe 3 or the third oil inlet pipe 4 with the largest oil pressure, the electromagnet 13 drives the connecting rod assembly 14 to make the block 15 pass through the through hole 16 and be inserted into the groove 17 of the rotating frame 9 to limit the rotating frame 9. At the same time, the second pipeline 10.2 and the third pipeline 10.3 in the disc body 10 are respectively connected with the other two of the first oil inlet pipe 2, the second oil inlet pipe 3 and the third oil inlet pipe 4.

[0047] like Figure 1 , Figure 3 , Figure 6As shown, an alarm mechanism is respectively arranged on the first oil inlet pipe 2, the second oil inlet pipe 3 and the third oil inlet pipe 4, and the alarm mechanism includes an alarm rotatable frame 18 arranged on one side of the first oil inlet pipe 2, the second oil inlet pipe 3 and the third oil inlet pipe 4, the alarm rotatable frame 18 is fixedly connected to one end of the rotating shaft 19, the other end of the rotating shaft 19 radially penetrates the first oil inlet pipe 2, the second oil inlet pipe 3 and the third oil inlet pipe 4, and is hingedly connected to a connecting piece 20 arranged on the other side of the first oil inlet pipe 2, the second oil inlet pipe 3 and the third oil inlet pipe 4, and the rotating shaft 19 is fixedly connected to a blade 21 that can rotate under the impetus of oil flow in the middle part of the inner side of the first oil inlet pipe 2, the second oil inlet pipe 3 and the third oil inlet pipe 4, and the rotation of the blade 21 drives the rotation of the rotating shaft 19, and drives the rotation of the alarm rotatable frame 18 through the rotating shaft 19.

[0048] like Figure 8 As shown, the alarm rotating frame 18 includes a frame body 18.1 fixedly connected to the rotating shaft 19, and a spring 18.2 and a centrifugal block 18.3 connected to the spring 18.2 are arranged inside the frame body 18.1. The centrifugal block 18.3 is connected to a contact 18.4 capable of triggering an external alarm device to alarm on a side away from the spring 18.2. When the frame body 18.1 rotates, the spring 18.2 contracts under the action of centrifugal force, and the centrifugal block 18.3 and the contact 18.4 contract together, and the contact 18.4 does not trigger the external alarm device to alarm. When the frame body 18.1 does not rotate, the spring 18.2 extends, pushing the contact 18.4 to trigger the external alarm device to alarm.

[0049] A control method of a crude oil transmission flow monitoring and control device of the present invention specifically includes:

[0050] The pipeline flow rates of the first oil inlet pipe 2, the second oil inlet pipe 3 and the third oil inlet pipe 4 are set to V1, V2 and V3 respectively, and the pipeline pressures of the first oil inlet pipe 2, the second oil inlet pipe 3 and the third oil inlet pipe 4 are set to P1, P2 and P3 respectively;

[0051] When any one of the pipeline flow rates V1, V2 and V3 of the first oil inlet pipe 2, the second oil inlet pipe 3 and the third oil inlet pipe 4 is zero, the blade 21 in the corresponding oil inlet pipe does not rotate, that is, the alarm rotating frame 18 does not rotate, and the spring 18.2 resets and pushes the contact 18.4 in the alarm device on the oil pipe to trigger the external alarm device to alarm;

[0052] The oil pressure gauges 6 provided on the first oil inlet pipe 2, the second oil inlet pipe 3 and the third oil inlet pipe 4 detect the pressures P1, P2 and P3 of the corresponding pipes:

[0053] When P1>P3 and P1>P2, or when P1>P3 and P3>P2, the first oil inlet pipe 2 is judged to be the main delivery pipe, and the external control motor 11 drives the rotating frame 9 to drive the disc body 10 to rotate through the central axis 7, so that the first pipeline 10.1 with a larger diameter is connected to the first oil inlet pipe 2, and the second pipeline 10.2 and the third pipeline 10.3 are connected to the remaining second oil inlet pipes 3 and third oil inlet pipes 4;

[0054] When P2>P1 and P2>P3, or when P2>P1 and P1>P3, the second oil inlet pipe 3 is judged to be the main delivery pipe; the motor 11 is controlled to drive the rotating frame 9 to drive the disc body 10 to rotate through the central axis 7, so that the first pipeline 10.1 with a larger diameter is connected to the second oil inlet pipe 3, and the second pipeline 10.2 and the third pipeline 10.3 are connected to the remaining first oil inlet pipe 2 and the third oil inlet pipe 4;

[0055] When P3>P1 and P3>P2, or when P3>P1 and P1>P2, the third oil inlet pipe 4 is judged as the main delivery pipe; the control motor 11 drives the rotating frame 9 to drive the disc body 10 to rotate through the central axis 7, so that the first pipeline 10.1 with a larger diameter is connected to the third oil inlet pipe 4, and the second pipeline 10.2 and the third pipeline 10.3 are connected to the remaining first oil inlet pipe 2 and the second oil inlet pipe 3.

[0056] In the above four cases, when the first pipeline 10.1 with a larger diameter is connected to the first oil inlet pipe 2 or the second oil inlet pipe 3 or the third oil inlet pipe 4, the electromagnet 13 located at the first oil inlet pipe 2 or the second oil inlet pipe 3 or the third oil inlet pipe 4 connected to the first pipeline 10.1 is energized by external control, and an electromagnetic force is generated to attract the connecting rod assembly 14 so that the block 15 passes through the through hole 16 and is inserted into the groove 17 of the rotating frame 9 to limit the rotating frame 9.

[0057] The crude oil transmission flow monitoring and control device and control method of the present invention, during use, firstly connect the oil pressure gauge, alarm device 11, and motor to an external host computer with signal receiving and display. During crude oil production, the host computer monitors the crude oil transportation pressure and crude oil transportation flow rate in the pipeline transportation process in real time. When any one of the pipeline flow rates V1, V2, and V3 of the first oil inlet pipe (2), the second oil inlet pipe (3), and the third oil inlet pipe (4) is zero, the blade 21 in the corresponding oil pipe does not rotate, that is, the alarm rotating frame 18 on the oil pipe does not rotate, and the spring 18.2 resets and pushes the contact 18.4 in the alarm device on the oil pipe to trigger the external alarm device to alarm, and notify the staff to carry out corresponding processing.

[0058] When the pressures P1, P2 and P3 of the corresponding pipelines are detected by the oil pressure gauges (6) arranged on the first oil inlet pipe (2), the second oil inlet pipe (3) and the third oil inlet pipe (4), when P1>P3 and P1>P2 or when P1>P3 and P3>P2, the first oil inlet pipe is judged to be the main delivery pipeline, and the staff controls the first pipeline to connect with the first oil inlet pipe; when P2>P1 and P2>P3 or P2>P1 and P1>P3, the second oil inlet pipe is judged to be the main delivery pipeline, and the staff controls the first pipeline to connect with the second oil inlet pipe; when P3>P1 and P3>P2 or P3>P1 and P1>P2, the third oil inlet pipe is judged to be the main delivery pipeline, and the staff controls the first pipeline to connect with the third oil inlet pipe. In this way, the input oil pressure of the oil inlet pipe with high pressure is reduced, that is, the interference with the input flow of the other oil inlet pipes is reduced, so as to achieve the effect of integrated analysis and management, and improve the processing efficiency of the integrated reservoir analysis and management system.

[0059] When the first pipeline is connected to the oil inlet pipe with high pressure, the electromagnet located at the oil inlet pipe connected to the first pipeline is energized by external control, generating electromagnetic force to attract the connecting rod assembly so that the block passes through the through hole and is inserted into the groove of the rotating frame to limit the rotating frame.

[0060] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A crude oil transmission flow monitoring and control device, comprising a housing (1), characterized in that: The upper end surface (1.1) and the lower end surface (1.2) of the shell (1) are both circular end surfaces. A first oil inlet pipe (2), a second oil inlet pipe (3) and a third oil inlet pipe (4) which are connected to the interior are fixedly connected at equal intervals on the periphery of the shell (1). The first oil inlet pipe (2), the second oil inlet pipe (3) and the third oil inlet pipe (4) are all provided with an oil pressure gauge (6) which is connected to an external signal receiving end and is used to collect the oil pressure in the pipe. An oil delivery pipe (5) which is connected to the interior and is used to deliver oil to the outside is fixedly provided protruding outwardly at the middle part of the upper end surface (1.1) of the shell (1). An oil quantity regulating mechanism is provided inside the shell (1) for regulating the flow between the first oil inlet pipe (2), the second oil inlet pipe (3) and the third oil inlet pipe (4) and the oil delivery pipe (5) according to the different pressures displayed by the oil pressure gauges (6) on the first oil inlet pipe (2), the second oil inlet pipe (3) and the third oil inlet pipe (4) to ensure that the oil delivery pipe (5) can maintain a stable output state. The first oil inlet pipe (2), the second oil inlet pipe (3) and the third oil inlet pipe (4) are each provided with an alarm mechanism, the alarm mechanism comprising an alarm rotating frame (18) arranged on one side of the first oil inlet pipe (2), the second oil inlet pipe (3) and the third oil inlet pipe (4), the alarm rotating frame (18) being fixedly connected to one end of a rotating shaft (19), the other end of the rotating shaft (19) penetrating the first oil inlet pipe (2), the second oil inlet pipe (3) and the third oil inlet pipe (4) in the radial direction of the first oil inlet pipe (2), the second oil inlet pipe (3) and the third oil inlet pipe (4), and being hingedly connected to a connecting piece (20) arranged on the other side of the first oil inlet pipe (2), the second oil inlet pipe (3) and the third oil inlet pipe (4), the rotating shaft (19) being fixedly connected to a blade (21) capable of rotating under the impetus of the oil flow rate at the middle part of the inner side of the first oil inlet pipe (2), the second oil inlet pipe (3) and the third oil inlet pipe (4) The rotation of the blade (21) drives the rotation of the rotating shaft (19), and drives the rotation of the alarm rotating frame (18) through the rotating shaft (19); the alarm rotating frame (18) includes a frame body (18.1) fixedly connected to the rotating shaft (19), a spring (18.2) and a centrifugal block (18.3) connected to the spring (18.2) are arranged inside the frame body (18.1), and the centrifugal block (18.3) is away from the spring (18 .2) is connected to one side of the frame (18.4) which can trigger an external alarm device to sound an alarm. When the frame (18.1) rotates, the spring (18.2) contracts under the action of centrifugal force, and the centrifugal block (18.3) and the contact (18.4) contract together, and the contact (18.4) does not trigger the external alarm device to sound an alarm. When the frame (18.1) does not rotate, the spring (18.2) extends, pushing the contact (18.4) to trigger the external alarm device to sound an alarm. The oil quantity regulating mechanism comprises: a toothed disc (8), a rotating frame (9) and a disc body (10) which are arranged in sequence through a central axis (7) from a lower end surface (1.2) to an upper end surface (1.1) inside the housing (1), wherein the toothed disc (8) is fixed to the lower end surface (1.2) of the housing (1), one end of the central axis (7) is hinged to the toothed disc (8), the other end of the central axis (7) passes through one end of the rotating frame (9) and the center of the disc body (10) in sequence, and the central axis (7) is fixedly connected to the rotating frame (9) and the disc body (10), the other end of the rotating frame (9) is slidably connected to the lower end surface (1.2) of the housing (1), and the rotating frame (9) is provided with a device for driving the rotating frame (9) to adjust the oil quantity. The central axis (7) is a driving mechanism that rotates along the circumference of the shell (1). The disc (10) is integrally formed with a first pipeline (10.1), a second pipeline (10.2) and a third pipeline (10.3) radially and at equal angles. When the rotating frame (9) rotates, the central axis (7) and the disc (10) are driven to rotate along with the rotating frame (9), so that the oil inlets of the first pipeline (10.1), the second pipeline (10.2) and the third pipeline (10.3) on the disc (10) are respectively connected to and communicated with the first oil inlet pipe (2), the second oil inlet pipe (3) and the third oil inlet pipe (4), and the oil outlets of the first pipeline (10.1), the second pipeline (10.2) and the third pipeline (10.3) are connected to the oil delivery pipe (5). The diameters of the second pipeline (10.2) and the third pipeline (10.3) are the same, and the diameter of the first pipeline (10.1) is larger than the diameters of the second pipeline (10.2) and the third pipeline (10.3).

2. A crude oil transmission flow monitoring and control device according to claim 1, characterized in that: The rotating frame (9) comprises: a horizontal cross frame (9.1) arranged along the radial direction of the shell (1), one end of the horizontal cross frame (9.1) being fixedly connected to the central axis (7), and the other end of the horizontal cross frame (9.1) being integrally formed with a vertically arranged vertical frame (9.2), and the vertical frame (9.2) being slidably embedded in a circle of guide grooves (1.3) formed on the lower end surface (1.2) of the shell (1) near the edge.

3. The crude oil transmission flow monitoring and control device according to claim 1 is characterized in that: The driving mechanism comprises: a motor (11) arranged on a horizontal cross frame (9.1) of the rotating frame (9); an output end of the motor (11) passes through the horizontal cross frame (9.1) and is fixedly connected to a driving gear (12) located below the horizontal cross frame (9.1); the driving gear (12) is meshed with the toothed disc (8); when the motor (11) is driven, the driving gear (12) rotates along the toothed disc (8), driving the rotating frame (9) to rotate around the toothed disc (8), thereby causing the rotating frame (9) fixed to the rotating frame (9) to rotate around the toothed disc (8). The central shaft (7) connected thereto and the disc body (10) fixedly connected thereto rotate synchronously, and the first oil inlet pipe (2), the second oil inlet pipe (3) and the third oil inlet pipe (4) corresponding to the housing (1) are each provided with a group of positioning mechanisms for positioning the disc body (10) when the first pipeline (10.1), the second pipeline (10.2) and the third pipeline (10.3) in the disc body (10) are rotated to be connected to the first oil inlet pipe (2) or the second oil inlet pipe (3) or the third oil inlet pipe (4) to be connected thereto.

4. A crude oil transmission flow monitoring and control device according to claim 3, characterized in that: The positioning mechanism comprises: an electromagnet (13) arranged at the bottom of the first oil inlet pipe (2), the second oil inlet pipe (3) and the third oil inlet pipe (4); a connecting rod assembly (14) which can be extended and retracted under the action of the electromagnet (13) and is arranged on a side of the electromagnet (13) close to the housing (1) and corresponds to the electromagnet (13); a clamping block (15) is arranged at the top of the connecting rod assembly (14); a through hole (16) which can penetrate the clamping block (15) is formed on the housing (1) and corresponds to the through hole (16); and a clamping block (15) which can be embedded in the through hole (16) is formed on the vertical frame (9.2) constituting the vertical part of the rotating frame (9) and corresponds to the through hole (16). When the rotating frame (9) drives the disc (10) to rotate so that the first pipeline (10.1) with the largest diameter in the disc (10) rotates to connect with the first oil inlet pipe (2) or the second oil inlet pipe (3) or the third oil inlet pipe (4) with the largest oil pressure, the electromagnet (13) drives the connecting rod assembly (14) to make the clamping block (15) pass through the through hole (16) and clamp into the groove (17) of the rotating frame (9) to limit the rotating frame (9), and at the same time, the second pipeline (10.2) and the third pipeline (10.3) in the disc (10) are respectively connected with the other two of the first oil inlet pipe (2), the second oil inlet pipe (3) and the third oil inlet pipe (4).

5. The crude oil transmission flow monitoring and control device according to claim 4 is characterized in that: Control methods include: The pipeline flow rates of the first oil inlet pipe (2), the second oil inlet pipe (3) and the third oil inlet pipe (4) are set to V1, V2 and V3 respectively, and the pipeline pressures of the first oil inlet pipe (2), the second oil inlet pipe (3) and the third oil inlet pipe (4) are set to P1, P2 and P3 respectively; When any one of the pipeline flow velocities V1, V2 and V3 of the first oil inlet pipe (2), the second oil inlet pipe (3) and the third oil inlet pipe (4) is zero, the blade (21) in the corresponding oil inlet pipe does not rotate, that is, the alarm rotating frame (18) on the oil inlet pipe does not rotate, and the spring (18.2) resets and pushes the contact (18.4) in the alarm device on the oil inlet pipe to trigger the external alarm device to alarm; When the oil pressure gauges (6) provided on the first oil inlet pipe (2), the second oil inlet pipe (3) and the third oil inlet pipe (4) detect the pressures P1, P2 and P3 of the corresponding pipes: When P1>P3 and P1>P2, or when P1>P3 and P3>P2, it is determined that the first oil inlet pipe (2) is the main delivery pipe, and the external control motor (11) drives the rotating frame (9) to rotate the disc body (10) through the central axis (7), so that the first pipeline (10.1) with a larger diameter is connected to the first oil inlet pipe (2), and the second pipeline (10.2) and the third pipeline (10.3) are connected to the remaining second oil inlet pipes (3) and the third oil inlet pipes (4); When P2>P1 and P2>P3, or when P2>P1 and P1>P3, it is determined that the second oil inlet pipe (3) is the main delivery pipe; the motor (11) is controlled to drive the rotating frame (9) to drive the disc body (10) to rotate through the central axis (7), so that the first pipeline (10.1) with a larger diameter is connected to the second oil inlet pipe (3), and the second pipeline (10.2) and the third pipeline (10.3) are connected to the remaining first oil inlet pipe (2) and the third oil inlet pipe (4); When P3>P1 and P3>P2, or when P3>P1 and P1>P2, the third oil inlet pipe (4) is determined to be the main delivery pipe; the control motor (11) drives the rotating frame (9) to drive the disc body (10) to rotate through the central axis (7), so that the first pipeline (10.1) with a larger diameter is connected to the third oil inlet pipe (4), and the second pipeline (10.2) and the third pipeline (10.3) are connected to the remaining first oil inlet pipe (2) and the second oil inlet pipe (3).

6. The crude oil transmission flow monitoring and control device according to claim 5 is characterized in that: When the first pipeline (10.1) with a larger diameter is connected to the first oil inlet pipe (2) or the second oil inlet pipe (3) or the third oil inlet pipe (4), an external control is performed to energize the electromagnet (13) located at the first oil inlet pipe (2) or the second oil inlet pipe (3) or the third oil inlet pipe (4) connected to the first pipeline (10.1), thereby generating an electromagnetic force to attract the connecting rod assembly (14) so ​​that the clamping block (15) passes through the through hole (16) and is clamped into the groove (17) of the rotating frame (9) to limit the rotating frame (9).

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