Centrifugal pump for oil exploitation

Abstract

The invention relates to a centrifugal pump for oil exploitation applied to the technical field of oil exploitation, a centrifugal pump main body and a monitoring and supplying intelligent control mechanism, the monitoring and supplying intelligent control mechanism comprises a transfer cylinder, an oil storage tank is arranged above the transfer cylinder, and an oil guide pipe is communicated between the transfer cylinder and the oil storage tank. When petroleum supply goes wrong, the monitoring and supply analysis module can open the oil guide electromagnetic valve to supplement petroleum into the transfer cylinder, so that a compensation effect is achieved, it is guaranteed that sufficient petroleum is sucked into the centrifugal pump body, the centrifugal pump body is prevented from being damaged due to insufficient suction amount, and meanwhile the service life of the centrifugal pump body is prolonged. In addition, the monitoring and supply analysis module can also start the reminding and warning module to send out acousto-optic reminding to related technicians, so that the technicians can find the problems existing in petroleum supply in time and carry out corresponding processing in time, the reliability and stability of the centrifugal pump can be improved, and the reliability and stability of the whole petroleum conveying system can also be improved.

Description

Technical Field

[0001] The invention relates to a centrifugal pump, in particular to a centrifugal pump for oil mining applied in the technical field of oil mining. Background Art

[0002] A centrifugal pump is a pump that transports liquids by the centrifugal force generated by the rotation of the impeller. In the process of oil production, centrifugal pumps are widely used to transport crude oil, natural gas liquids and various chemical liquids. Its efficient transportation capacity ensures the continuity and stability of oil production.

[0003] The invention patent with the publication number CN115492773B discloses a centrifugal pump for offshore oil mining, including: a driving motor, a centrifugal pump box and a thermal expansion sealing mechanism, the output end of the driving motor is provided with a main shaft, the thermal expansion sealing mechanism of the main shaft is fixedly sleeved on the surface of the main shaft, one end of the main shaft penetrates to the inner side of the centrifugal pump box and is fixedly sleeved with a turbine disk, the inner side of the centrifugal pump box is fixedly installed with a heat insulating liner box and an airtight gland, and the inner side of the centrifugal pump box is provided with a liquid guide sleeve sleeved on the outer side of the main shaft. In the present invention, by setting a new sealing protection device structure, the thermal expansion sealing mechanism is used as the shaft end dynamic sealing structure of the driving motor and the centrifugal pump box, when the driving motor drives the internal turbine disk of the centrifugal pump box to rotate, the relative rotation movement of the fixed sleeve and the inner liner pipe is used as a supporting structure, and the sealing of the shaft ends of the driving motor and the centrifugal pump box is realized, thereby improving the protection capability.

[0004] In the process of oil extraction, a stable oil supply is essential for the normal operation of the centrifugal pump. However, due to various factors, oil supply problems are prone to occur, resulting in insufficient suction of the centrifugal pump, which not only affects the oil delivery efficiency but also easily damages the centrifugal pump. It is necessary to promptly discover this problem and deal with it accordingly. However, in the prior art, centrifugal pumps such as those in the above patents generally do not have the corresponding functions. Therefore, we propose a centrifugal pump for oil extraction. Summary of the invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is: how to prevent insufficient suction volume of the centrifugal pump caused by problems with the oil supply, and how to promptly detect problems with the oil supply.

[0006] In order to solve the above problems, the present invention provides a centrifugal pump for oil mining, comprising a centrifugal pump body and a monitoring and supply intelligent control mechanism, the monitoring and supply intelligent control mechanism comprising a transfer cylinder, an oil storage tank is arranged above the transfer cylinder, an oil guide pipe is connected between the transfer cylinder and the oil storage tank, and the transfer cylinder and the oil storage tank are filled with oil, the outer walls on the left and right sides of the transfer cylinder are respectively connected with a pump connecting pipe and a suction connecting pipe, the end of the pump connecting pipe away from the transfer cylinder is connected to the suction end of the centrifugal pump body, the oil guide pipe, the pump connecting pipe, and the suction connecting pipe are respectively provided with an oil guide solenoid valve, a pump connecting solenoid valve, and a suction solenoid valve, and a cylinder liquid level sensor is arranged in the transfer cylinder; The monitoring and supply intelligent control mechanism also includes a monitoring and start intelligent controller fixedly installed on the oil storage tank, on which a monitoring and start setting module, a monitoring and supply analysis module, and a reminder and alarm module are provided. The cylinder liquid level sensor and the monitoring and start setting module are all connected to the monitoring and supply analysis module by signal, and the monitoring and supply analysis module is signal-connected to the centrifugal pump body, the oil guide solenoid valve, and the reminder and alarm module.

[0007] In the above-mentioned centrifugal pump for oil mining, when there is a problem with the oil supply, the monitoring and analysis module will open the oil guide solenoid valve to add oil to the transfer cylinder to play a compensatory role, ensuring that the centrifugal pump body has sufficient oil to be sucked in, and preventing the centrifugal pump body from being damaged due to insufficient suction. At the same time, the monitoring and analysis module will also start the reminder and alarm module to send sound and light reminders to relevant technical personnel, so that the technical personnel can promptly discover the problem of oil supply and take corresponding measures in time.

[0008] As a further improvement of the present application, a fluctuation warning threshold and duration parameter are reasonably set through the monitoring and start setting module. Before starting the centrifugal pump body, the oil guide solenoid valve, the pump connecting solenoid valve and the suction solenoid valve are opened first. After the centrifugal pump body is started, the monitoring and supply analysis module will close the oil guide solenoid valve and start timing. After the timing reaches the set duration parameter, the monitoring and supply analysis module will start the barrel liquid level sensor, so that the barrel liquid level sensor monitors the liquid level of the oil in the transfer barrel, and sends the monitored liquid level data to the monitoring and supply analysis module, so that the monitoring and supply analysis module determines whether there is a problem with the oil supply by analyzing the liquid level data monitored by the barrel liquid level sensor. When the fluctuation value of the oil level in the transfer barrel exceeds the fluctuation warning threshold, the monitoring and supply analysis module will open the oil guide solenoid valve and start the reminder alarm module.

[0009] As another improvement of the present application, an electric telescopic rod is fixedly installed on the inner wall of the top end of the rotating cylinder, and the output end of the electric telescopic rod is fixedly connected to an oil squeezing plate which is slidingly sealed with the oil storage tank. A pump start control module and a control button are also provided on the monitoring and start intelligent controller.

[0010] As another improved supplement to the present application, the control button and the monitoring and starting setting module are all connected to the pump start control module signal, and the pump start control module is connected to the oil guide solenoid valve, the pump connecting solenoid valve, the suction solenoid valve, the electric telescopic rod, and the centrifugal pump body by signal, so that when the centrifugal pump is started, the monitoring and supply intelligent control mechanism can automatically inject oil into the pump body without manual injection, thereby improving the intelligence and practicality of the centrifugal pump.

[0011] As another improved supplement of the present application, the discharge end of the centrifugal pump body is connected to a tee, and the other two ends of the tee are respectively connected to a discharge connecting pipe and an oil filling pipe, and a discharge solenoid valve and an oil filling solenoid valve are respectively provided on the discharge connecting pipe and the oil filling pipe, and the end of the oil filling pipe away from the tee is connected to the oil storage tank, and a tank liquid level sensor is also provided in the oil storage tank.

[0012] As another improvement supplement to the present application, the oil filling pipe passes through the oil squeezing plate and is slidingly and sealingly connected thereto, the pump start control module is also connected to the discharge solenoid valve and the oil filling solenoid valve signals, the tank liquid level sensor is installed at the bottom end of the oil squeezing plate, and the tank liquid level sensor is connected to the pump start control module signal, so that the oil storage tank can be automatically replenished with oil without manual replenishment.

[0013] As another improvement supplement to the present application, a lower coarse exhaust pipe is embedded through the middle part of the oil squeezing plate, the top end of the lower coarse exhaust pipe is connected to the upper fine exhaust pipe, the bottom end of the lower coarse exhaust pipe is arranged in an opening shape and a breathable support net is fixedly installed, a pipe-blocking float plug is movably arranged on the breathable support net, an anti-deflection vertical rod is fixedly installed on the top of the breathable support net, the anti-deflection vertical rod passes through the pipe-blocking float plug and is slidably and sealingly connected thereto.

[0014] As another improved supplement of the present application, the upper fine exhaust pipe passes through the top outer wall of the oil storage tank and extends to the outside of the oil storage tank, and the upper fine exhaust pipe is slidably connected to the top outer wall of the oil storage tank, the inner diameter of the lower coarse exhaust pipe is larger than the inner diameter of the upper fine exhaust pipe, the pipe blocking float plug is set to be cylindrical, and the diameter of the pipe blocking float plug is smaller than the inner diameter of the lower coarse exhaust pipe and larger than the inner diameter of the upper fine exhaust pipe.

[0015] As another improvement supplement to the present application, elastic pull ropes are fixedly installed on the inner walls on both sides of the lower coarse exhaust pipe, and the end of the elastic pull rope away from the inner wall of the lower coarse exhaust pipe is fixedly connected to the pipe blocking float plug. The elastic pull rope can play a certain limiting and fixing role on the pipe blocking float plug to prevent the pipe blocking float plug from blocking the upper fine exhaust pipe when discharging air.

[0016] To sum up, through the setting of the monitoring and supply intelligent control mechanism, during the process of oil transportation, when there is a problem with the oil supply, the monitoring and supply analysis module will open the oil guide solenoid valve to add oil to the transfer cylinder to play a compensatory role, ensuring that the centrifugal pump body has sufficient oil to be sucked in, and preventing the centrifugal pump body from being damaged due to insufficient suction. At the same time, the monitoring and supply analysis module will also start the reminder and alarm module to send sound and light reminders to relevant technical personnel, so that the technical personnel can promptly discover the problems with the oil supply and take corresponding measures in time, thereby not only improving the reliability and stability of the centrifugal pump, but also improving the reliability and stability of the entire oil transportation system; through the joint setting of the electric telescopic rod, the oil squeezing plate, the pump start control module, etc., when the centrifugal pump is started, the monitoring and supply intelligent control mechanism can automatically fill the pump body with oil without manual filling, and can automatically add oil to the oil storage tank without manual replenishment, which greatly improves the intelligence and practicality of the centrifugal pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of a centrifugal pump used in oil mining in the first embodiment of the present application; Figure 2 This is a schematic cross-sectional view of the rotating drum in the first embodiment of the present application; Figure 3 This is a system structure block diagram of the monitoring intelligent controller in the first embodiment of the present application; Figure 4 This is a schematic diagram of the three-dimensional structure of a centrifugal pump used in oil mining in the second embodiment of the present application; Figure 5 This is a front view structural schematic diagram of a centrifugal pump for oil mining in the second embodiment of the present application; Figure 6 This is a schematic cross-sectional view of the oil tank in the second embodiment of the present application; Figure 7 This is a schematic cross-sectional structure diagram of the lower rough exhaust pipe in the second embodiment of the present application; Figure 8 This is a system structure block diagram of the monitoring intelligent controller in the second implementation mode of the present application.

[0018] Description of the numbers in the figure: 001, centrifugal pump body; 201, transfer cylinder; 202, oil storage tank; 203, oil guide pipe; 204, pump connecting pipe; 205, suction connecting pipe; 206, oil guide solenoid valve; 207, pump connecting solenoid valve; 208, suction solenoid valve; 003, monitoring and intelligent controller; 401, electric telescopic rod; 402, oil squeezing plate; 403, three-way pipe; 404, discharge connecting pipe; 405, oil filling pipe; 406, discharge solenoid valve; 407, oil filling solenoid valve; 408, lower coarse exhaust pipe; 409, upper fine exhaust pipe; 410, breathable support net; 411, pipe blocking float plug; 412, anti-deviation vertical rod; 413, elastic pull rope. DETAILED DESCRIPTION

[0019] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0020] The first implementation method: Figure 1-Figure 3 A centrifugal pump for oil mining is shown, including a centrifugal pump body 001 and a monitoring and supply intelligent control mechanism, the monitoring and supply intelligent control mechanism includes a rotating cylinder 201, an oil storage tank 202 is arranged above the rotating cylinder 201, an oil guide pipe 203 is connected between the rotating cylinder 201 and the oil storage tank 202, and the rotating cylinder 201 and the oil storage tank 202 are filled with oil, and the outer walls on the left and right sides of the rotating cylinder 201 are respectively connected with a pump connecting pipe 204 and a suction connecting pipe 205, and the end of the pump connecting pipe 204 away from the rotating cylinder 201 is connected to the suction end of the centrifugal pump body 001, and the oil guide pipe 203 and the pump connecting pipe 204 are connected to the suction end of the centrifugal pump body 001. The pipe 204 and the suction connecting pipe 205 are respectively provided with an oil guide solenoid valve 206, a pump solenoid valve 207 and a suction solenoid valve 208. A cylinder liquid level sensor is provided in the transfer cylinder 201. The monitoring and supply intelligent control mechanism also includes a monitoring and start intelligent controller 003 fixedly installed on the oil storage tank 202. The monitoring and start intelligent controller 003 is provided with a monitoring and start setting module, a monitoring and supply analysis module and a reminder and alarm module. The cylinder liquid level sensor and the monitoring and start setting module are all connected with the monitoring and supply analysis module by signal. The monitoring and supply analysis module is all connected with the centrifugal pump body 001, the oil guide solenoid valve 206 and the reminder and alarm module by signal.

[0021] A fluctuation warning threshold and duration parameters are reasonably set through the monitoring and start setting module. Before starting the centrifugal pump body 001, the oil guide solenoid valve 206, the pump solenoid valve 207, and the suction solenoid valve 208 are opened first. After the centrifugal pump body 001 is started, the monitoring and supply analysis module will close the oil guide solenoid valve 206 and start timing. After the timing reaches the set duration parameter, the monitoring and supply analysis module will start the barrel liquid level sensor to enable the barrel liquid level sensor to monitor the oil level in the transfer barrel 201 and send the monitored liquid level data to the monitoring and supply analysis module. When the centrifugal pump body 001 is just started, the oil level in the transfer barrel 201 will fluctuate relatively greatly, but as the centrifugal pump body 001 runs, the liquid level It will tend to be stable. Under normal circumstances, after the centrifugal pump body 001 runs stably, the oil level in the transfer drum 201 will be relatively stable and will only fluctuate within a small range. This is also the purpose of setting the duration parameter and delaying the start of the drum liquid level sensor. When setting the duration parameter, it can be set according to the time required for the centrifugal pump body 001 to run stably from start to stable operation, so that when the drum liquid level sensor is started, the centrifugal pump body 001 is already in a stable operation stage. During the oil transportation process, when there is a problem with the oil supply, the liquid level in the transfer drum 201 will drop significantly, causing the fluctuation value of the liquid level to exceed the set fluctuation warning threshold, so that the monitoring and analysis module can analyze the drum liquid level sensor The monitored liquid level data finds that there is a problem with the oil supply. When the monitoring and analysis module finds that there is a problem with the oil supply, that is, when the fluctuation value of the oil level in the transfer cylinder 201 exceeds the fluctuation warning threshold, the monitoring and analysis module will open the oil guide solenoid valve 206 and start the reminder alarm module. After the oil guide solenoid valve 206 is opened, the oil in the oil storage tank 202 will flow into the transfer cylinder 201 through the oil guide pipe 203 to replenish the oil in the transfer cylinder 201, thereby playing a compensating role, so that the centrifugal pump body 001 has sufficient oil suction, thereby preventing the suction volume of the centrifugal pump body 001 from decreasing. After the reminder alarm module is started, it will emit sound and light reminders so that relevant technical personnel can get it in time It is known that there is a problem with the oil supply. Therefore, through the setting of the monitoring and intelligent control mechanism, during the oil transportation process, when there is a problem with the oil supply, the monitoring and analysis module will open the oil guide solenoid valve 206 to add oil to the transfer cylinder 201 to play a compensatory role, ensuring that the centrifugal pump body 001 has sufficient oil to be sucked in, and preventing the centrifugal pump body 001 from being damaged due to insufficient suction. At the same time, the monitoring and analysis module will also start the reminder and alarm module to send sound and light reminders to relevant technical personnel, so that the technical personnel can promptly discover the problem of oil supply and take corresponding measures in time, thereby not only improving the reliability and stability of the centrifugal pump, but also improving the reliability and stability of the entire oil transportation system.

[0022] The second implementation method: Figure 4-Figure 8A centrifugal pump for oil mining is shown. Different from the first embodiment, an electric telescopic rod 401 is fixedly installed on the inner wall of the top end of the rotating cylinder 201, and the output end of the electric telescopic rod 401 is fixedly connected to an oil squeezing plate 402 which is slidingly sealed with an oil storage tank 202. A pump start control module and a control button are also provided on the monitoring and start intelligent controller 003. The control button and the monitoring and start setting module are all connected to the pump start control module by signal. The pump start control module is connected to the oil guide solenoid valve 206, the pump connecting solenoid valve 207, the suction solenoid valve 208, the electric telescopic rod 401, and the centrifugal pump body 001 by signal.

[0023] The control button is used to control the start and stop of the centrifugal pump. When the centrifugal pump body 001 is started, a start command can be issued to the pump start control module through the control button, so that the pump start control module opens the oil guide solenoid valve 206 and the pump solenoid valve 207 and controls the electric telescopic rod 401 to drive the oil squeezing plate 402 to move downward a certain distance (the moving distance can be set through the monitoring setting module. In addition, in this embodiment, before starting the centrifugal pump body 001, there is no need for technicians to control the opening of the oil guide solenoid valve 206, the pump solenoid valve 207, and the suction solenoid valve 208. The pump start control module will automatically control the opening of the oil guide solenoid valve 206, the pump solenoid valve 207, and the suction solenoid valve 208). The downward movement of the oil squeezing plate 402 will squeeze the oil in the oil storage tank 202, so that the oil flows into the pump body through the oil guide pipe 203, the transfer cylinder 201, and the pump pipe 204, thereby automatically pumping the oil to the centrifugal pump. The main body 001 is filled with oil without manual filling of oil. Then the pump start control module will open the suction solenoid valve 208, start the centrifugal pump main body 001 and control the electric telescopic rod 401 to drive the oil squeezing plate 402 to move upward and reset, and the centrifugal pump can be started (because the monitoring and analysis module will close the oil guide solenoid valve 206 after the centrifugal pump main body 001 is started, so there is no need for the pump start control module to close the oil guide solenoid valve 206). When shutting down the centrifugal pump, a closing command can be issued to the pump start control module through the control button, so that the pump start control module closes the connecting pump solenoid valve 207, the suction solenoid valve 208 and the centrifugal pump main body 001. Therefore, through the joint setting of the electric telescopic rod 401, the oil squeezing plate 402, the pump start control module, etc., when the centrifugal pump is started, the monitoring and intelligent control mechanism can automatically fill the pump body with oil without manual filling, thereby improving the intelligence and practicality of the centrifugal pump.

[0024] See also Figure 4-Figure 8The discharge end of the centrifugal pump body 001 is connected with a three-way pipe 403, and the other two ends of the three-way pipe 403 are respectively connected with a discharge connecting pipe 404 and an oil filling pipe 405. The discharge connecting pipe 404 and the oil filling pipe 405 are respectively provided with a discharge solenoid valve 406 and an oil filling solenoid valve 407. The end of the oil filling pipe 405 away from the three-way pipe 403 is connected with the oil storage tank 202. A tank liquid level sensor is also provided in the oil storage tank 202. The oil filling pipe 405 passes through the oil squeezing plate 402 and is connected thereto in a sliding seal. The pump start control module is also connected with the discharge solenoid valve 406 and the oil filling solenoid valve 407 by signal. The tank liquid level sensor is installed at the bottom end of the oil squeezing plate 402, and the tank liquid level sensor is connected with the pump start control module by signal. A lower coarse exhaust pipe 408 is embedded in the middle of the oil squeezing plate 402. The top of 408 is connected to an upper fine exhaust pipe 409, the bottom end of the lower coarse exhaust pipe 408 is set to an open shape and a breathable support net 410 is fixedly installed, a pipe blocking float 411 is movably provided on the breathable support net 410, and an anti-deflection vertical rod 412 is fixedly installed on the top of the breathable support net 410, the anti-deflection vertical rod 412 passes through the pipe blocking float 411 and is slidingly and sealingly connected thereto, the upper fine exhaust pipe 409 passes through the top outer wall of the oil storage tank 202 and extends to the outside of the oil storage tank 202, and the upper fine exhaust pipe 409 is slidingly connected to the top outer wall of the oil storage tank 202, the inner diameter of the lower coarse exhaust pipe 408 is larger than the inner diameter of the upper fine exhaust pipe 409, the pipe blocking float 411 is set to a cylindrical shape, and the diameter of the pipe blocking float 411 is smaller than the inner diameter of the lower coarse exhaust pipe 408 and larger than the inner diameter of the upper fine exhaust pipe 409.

[0025] When the centrifugal pump body 001 is started, a start command is issued to the pump start control module through the control button. After receiving the command, the pump start control module opens the oil guide solenoid valve 206 and the pump connection solenoid valve 207, and also opens the discharge solenoid valve 406 to discharge the air in the pump body through the three-way pipe 403 and the discharge connection pipe 404. In the process of the pump start control module controlling the electric telescopic rod 401 to drive the oil squeezing plate 402 to move downward, when the oil squeezing plate 402 does not touch the oil, it can be discharged to the outside through the lower coarse exhaust pipe 408 and the upper fine exhaust pipe 409. The air below the oil squeezing plate 402, on the one hand, can better fill the oil into the pump body, and on the other hand, can prevent air from being filled into the pump body. After the oil squeezing plate 402 touches the oil, part of the oil will enter the lower coarse exhaust pipe 408. Under the action of buoyancy, the pipe blocking float 411 will float upward and block the bottom end of the upper fine exhaust pipe 409 to prevent oil leakage. After the oil is poured into the pump body, the pump start control module opens the suction solenoid valve 208, starts the centrifugal pump body 001 and controls the electric telescopic rod 401 to drive the oil squeezing plate 402 upward. When the movement is reset, the discharge solenoid valve 406 will be closed, the oil filling solenoid valve 407 will be opened, and the suction solenoid valve 208 will be started, so that the centrifugal pump body 001 can transport the oil to the oil storage tank 202 through the three-way pipe 403 and the oil filling pipe 405, thereby achieving the purpose of automatically replenishing the oil into the oil storage tank 202, without the need to manually replenish the oil into the oil storage tank 202. In addition, relevant technicians can set a liquid level threshold through the monitoring setting module. After the tank liquid level sensor is started, it can monitor the liquid level of the oil in the oil storage tank 202 and monitor the level of the oil in the oil storage tank 202. The liquid level data is sent to the pump start control module. When the oil level in the oil storage tank 202 reaches the liquid level threshold, the oil is replenished. The pump start control module will close the tank level sensor and the oil filling solenoid valve 407 and open the discharge solenoid valve 406 to start transporting the oil. Therefore, through the joint arrangement of the three-way pipe 403, the discharge connecting pipe 404, the oil filling pipe 405, etc., the oil can be better poured into the pump body, and the oil storage tank 202 can be automatically replenished with oil without manual replenishment, which further improves the intelligence and practicality of the centrifugal pump.

[0026] See also Figure 7 Elastic pull ropes 413 are fixedly installed on the inner walls on both sides of the lower coarse exhaust cylinder 408. The end of the elastic pull rope 413 away from the inner wall of the lower coarse exhaust cylinder 408 is fixedly connected to the pipe blocking float plug 411. The elastic pull rope 413 can play a certain role in limiting and fixing the pipe blocking float plug 411 to prevent the pipe blocking float plug 411 from blocking the upper fine exhaust pipe 409 when discharging air.

[0027] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A centrifugal pump for oil mining, comprising a centrifugal pump body (001), characterized in that: The invention also comprises a monitoring and supply intelligent control mechanism, wherein the monitoring and supply intelligent control mechanism comprises a rotating cylinder (201), an oil storage tank (202) is arranged above the rotating cylinder (201), an oil guide pipe (203) is connected between the rotating cylinder (201) and the oil storage tank (202), and the rotating cylinder (201) and the oil storage tank (202) are both filled with petroleum, and the outer walls on the left and right sides of the rotating cylinder (201) are respectively connected with a pump connecting pipe (204) and a suction connecting pipe (205), and one end of the pump connecting pipe (204) away from the rotating cylinder (201) is connected with the suction end of the centrifugal pump body (001), and the oil guide pipe (203), the pump connecting pipe (204), and the suction connecting pipe (205) are respectively provided with an oil guide solenoid valve (206), a pump connecting solenoid valve (207), and a suction solenoid valve (208), and a cylinder liquid level sensor is arranged in the rotating cylinder (201); The monitoring and supply intelligent control mechanism also includes a monitoring and start intelligent controller (003) fixedly mounted on the oil storage tank (202); the monitoring and start intelligent controller (003) is provided with a monitoring and start setting module, a monitoring and supply analysis module, and a reminder and alarm module; the cylinder liquid level sensor and the monitoring and start setting module are both connected to the monitoring and supply analysis module by signal; the monitoring and supply analysis module is connected to the centrifugal pump body (001), the oil guide solenoid valve (206), and the reminder and alarm module by signal.

2. A centrifugal pump for oil mining according to claim 1, characterized in that: A fluctuation warning threshold and duration parameter are reasonably set through the monitoring and starting setting module. Before starting the centrifugal pump body (001), the oil guide solenoid valve (206), the pump connecting solenoid valve (207), and the suction solenoid valve (208) are opened first. After the centrifugal pump body (001) is started, the monitoring and supply analysis module closes the oil guide solenoid valve (206) and starts timing. When the timing reaches the set duration parameter, the monitoring and supply analysis module starts the barrel liquid level sensor, so that the barrel liquid level sensor monitors the oil level in the transfer barrel (201) and sends the monitored liquid level data to the monitoring and supply analysis module, so that the monitoring and supply analysis module determines whether there is a problem with the oil supply by analyzing the liquid level data monitored by the barrel liquid level sensor. When the fluctuation value of the oil level in the transfer barrel (201) exceeds the fluctuation warning threshold, the monitoring and supply analysis module opens the oil guide solenoid valve (206) and starts the reminder alarm module.

3. A centrifugal pump for oil mining according to claim 1, characterized in that: An electric telescopic rod (401) is fixedly mounted on the inner wall of the top end of the rotating cylinder (201); an output end of the electric telescopic rod (401) is fixedly connected to an oil squeezing plate (402) that is slidably and sealingly connected to the oil storage tank (202); and a pump start control module and a control button are also provided on the monitoring and start intelligent controller (003).

4. A centrifugal pump for oil mining according to claim 3, characterized in that: The control button and the monitoring and starting setting module are both connected to the pump starting control module by signal, and the pump starting control module is connected to the oil guide solenoid valve (206), the pump connecting solenoid valve (207), the suction solenoid valve (208), the electric telescopic rod (401), and the centrifugal pump body (001) by signal.

5. A centrifugal pump for oil mining according to claim 4, characterized in that: The discharge end of the centrifugal pump body (001) is connected to a three-way pipe (403), and the other two ends of the three-way pipe (403) are respectively connected to a discharge connecting pipe (404) and an oil filling pipe (405). A discharge solenoid valve (406) and an oil filling solenoid valve (407) are respectively provided on the discharge connecting pipe (404) and the oil filling pipe (405). One end of the oil filling pipe (405) away from the three-way pipe (403) is connected to an oil storage tank (202), and a tank liquid level sensor is also provided in the oil storage tank (202).

6. A centrifugal pump for oil mining according to claim 5, characterized in that: The oil filling pipe (405) passes through the oil squeezing plate (402) and is slidably sealed therewith; the pump start control module is also signal-connected to the discharge solenoid valve (406) and the oil filling solenoid valve (407); the tank liquid level sensor is mounted at the bottom end of the oil squeezing plate (402), and the tank liquid level sensor is signal-connected to the pump start control module.

7. A centrifugal pump for oil mining according to claim 6, characterized in that: A lower coarse exhaust pipe (408) is embedded in the middle of the oil squeezing plate (402), the top of the lower coarse exhaust pipe (408) is connected to an upper fine exhaust pipe (409), the bottom of the lower coarse exhaust pipe (408) is arranged in an open shape and fixedly installed with a breathable support net (410), a pipe blocking float (411) is movably arranged on the breathable support net (410), an anti-deflection vertical rod (412) is fixedly installed on the top of the breathable support net (410), and the anti-deflection vertical rod (412) passes through the pipe blocking float (411) and is slidably and sealingly connected thereto.

8. A centrifugal pump for oil mining according to claim 7, characterized in that: The upper fine exhaust pipe (409) passes through the top outer wall of the oil storage tank (202) and extends to the outside of the oil storage tank (202), and the upper fine exhaust pipe (409) is slidably connected to the top outer wall of the oil storage tank (202), the inner diameter of the lower coarse exhaust cylinder (408) is larger than the inner diameter of the upper fine exhaust pipe (409), the pipe blocking float (411) is configured to be cylindrical, and the diameter of the pipe blocking float (411) is smaller than the inner diameter of the lower coarse exhaust cylinder (408) and larger than the inner diameter of the upper fine exhaust pipe (409).

9. A centrifugal pump for oil mining according to claim 8, characterized in that: Elastic pull ropes (413) are fixedly mounted on the inner walls on both sides of the lower rough exhaust cylinder (408), and one end of the elastic pull rope (413) away from the inner wall of the lower rough exhaust cylinder (408) is fixedly connected to a pipe-blocking float plug (411).

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