Deep-sea shaftless screw axial flow oil and gas mixed transport pump

Abstract

The present application relates to oil and gas delivery pump technical field, especially be a kind of deep sea shaftless helical axial oil and gas mixed transport pump, comprising: pump body, pump body is provided with flow passage, the two sides of flow passage are respectively provided with inlet connecting pipe and outlet main pipeline;Flow guide assembly, flow guide assembly includes inlet flow guide mechanism, pumping mechanism, driving mechanism and guide vane mechanism;Pressure lead cooling assembly, pressure lead cooling assembly is used to cool pump body using liquid in pump;Air suction assembly, air suction assembly includes air extraction mechanism and air extraction pipe;Cleaning assembly, cleaning assembly includes energy conversion mechanism, storage mechanism and scraping mechanism.The liquid delivery mode in flow passage is all shaftless driving, there is no blade tip gap in impeller rim position, can significantly reduce pump volume loss and hydraulic loss, improve the operating efficiency of pump;Cleaning assembly realizes self-energy supply by kinetic energy-electric energy conversion, combined with scraping mechanism, automatically maintain air extraction pipe unobstructed, prolong the service life of equipment.

Description

Technical Field

[0001] This invention relates to the field of oil and gas transfer pump technology, specifically a deep-sea shaftless spiral axial flow oil and gas mixed transfer pump. Background Technology

[0002] Helical axial flow oil and gas mixed transport pumps are widely used in deep-sea oil and gas extraction and long-distance transportation. Commonly known helical axial flow oil and gas mixed transport pumps operate by driving a hub to rotate via a central shaft, which in turn drives a semi-open impeller.

[0003] The helical axial flow oil-gas mixed transport pump with semi-open impeller blades has the following obvious defects during operation:

[0004] (1) When the spiral axial flow oil-gas mixed pump is working, the gas phase density is much smaller than the liquid phase density, so the centrifugal force on the gas phase is much smaller than that on the liquid phase. Therefore, a large amount of gas phase accumulates at the impeller hub, while the liquid phase accumulates at the impeller rim, eventually leading to gas-liquid separation. As gas-liquid separation occurs, a large number of bubbles merge at the impeller hub, eventually forming a large gas cloud that blocks the flow channel. In severe cases, air lock may occur, thus affecting the pump performance.

[0005] (2) There is a tip clearance between the semi-open impeller blades and the pump body in the spiral axial flow oil-gas mixed transport pump. When the pump is working, under the action of the pressure difference between the working surface and the back surface of the blade, a leakage flow will be formed at the tip clearance. The leakage flow interacts with the main flow of the impeller and the laminar flow on the wall to induce leakage vortices, which in turn causes a large volumetric loss and hydraulic loss.

[0006] (3) Since the central shaft and hub occupy a large amount of flow space, in order to ensure that the spiral axial flow oil-gas mixed pump has sufficient flow area when it is working, the outer diameter of the blade is usually designed to be large. However, this will result in the outer edge linear velocity of the blade being too large, which will lead to a large pressure difference between the working surface and the back surface of the blade, further aggravating the leakage of the blade tip gap.

[0007] (4) The central shaft is inside the pump body, while the motor is outside the pump body, which causes two problems. First, the central shaft is too long and is prone to vibration, resulting in poor stability during pump operation. Second, the seal between the central shaft and the pump body is a dynamic-static seal structure, so it is impossible to achieve zero oil and gas leakage. In the extreme environment of the deep sea, the above problems are extremely harmful. Summary of the Invention

[0008] The purpose of this invention is to provide a deep-sea shaftless helical axial flow oil and gas mixing pump to solve the problems mentioned in the background art.

[0009] To achieve the above objectives, the present invention provides the following technical solution:

[0010] A deep-sea shaftless helical axial flow oil and gas mixing pump includes:

[0011] The pump body is provided with a flow channel, and an inlet pipe and an outlet main pipe are respectively provided on both sides of the flow channel;

[0012] A flow guiding assembly includes an inlet flow guiding mechanism, a pumping mechanism, a driving mechanism, and a guide vane mechanism. The inlet flow guiding mechanism is used to input fluid entering the inlet pipe into the flow channel. The pumping mechanism is used to transport the fluid to the outlet main pipe. The driving mechanism is used to drive the inlet flow guiding mechanism and the pumping mechanism to work. Guide vane mechanisms are provided on both sides of the pumping mechanism to guide the fluid flow direction.

[0013] A pressure-cooling assembly is used to cool the pump body using liquid inside the pump;

[0014] An air extraction assembly includes an air extraction mechanism and an air extraction pipe. The air extraction pipe is driven by the air extraction mechanism, which is used to extract the air generated by the rotation of the guide vane mechanism and deliver it to the pump outlet main pipe.

[0015] The cleaning component includes an energy conversion mechanism, a storage mechanism, and a scraping mechanism. The energy conversion mechanism converts the kinetic energy of the suction pipe into electrical energy and stores it in the storage mechanism. The scraping mechanism removes the deposits from the air inlet of the suction pipe.

[0016] Preferably, the inlet guiding mechanism includes a guiding agitator, the guiding agitator having helical blades inside, the guiding agitator being used to input the fluid entering the inlet pipe into the flow channel.

[0017] Preferably, the pumping mechanism includes a pump impeller disposed in the flow channel, and the pump impeller is used to transport fluid to the outlet main pipe.

[0018] Preferably, the guide vane mechanism includes an inlet guide vane and an outlet guide vane, the inlet guide vane being disposed between the pump impeller and the flow guide agitator, and the inlet guide vane and the outlet guide vane being disposed on both sides of the pump impeller.

[0019] Preferably, the drive mechanism includes a drive motor, a drive gear one, a drive gear two, a transmission gear one, and a transmission gear two. The drive motor is connected to the drive gear one via a key, and the drive gear one is connected to the drive gear two via a key. The drive gear one and the transmission gear one mesh with each other. The transmission gear one is sleeved on the outside of the pump impeller. The drive gear two and the transmission gear two mesh with each other and are sleeved on the outside of the flow guide agitator.

[0020] Preferably, the pressure-cooling assembly includes a pressure-tapping pipe, one end of which is connected to the outlet of the pump impeller, and the other end of which is connected to the inlet of the flow-guiding agitator.

[0021] Preferably, the pumping mechanism includes a liquid ring vacuum pump and an exhaust pipe. The pumping end of the liquid ring vacuum pump is connected to the pumping pipe, the exhaust end of the liquid ring vacuum pump is connected to one end of the exhaust pipe, and the other end of the exhaust pipe is connected to the main outlet pipe.

[0022] Preferably, the energy conversion mechanism includes a fixed ring, spring steel plates, connecting rods, striking blocks, an equipment box, and a piezoelectric ceramic block. The fixed ring is sleeved on the outside of the suction pipe, and a clamping cavity is formed inside the fixed ring. Several spring steel plates are arranged around the clamping cavity. Each spring steel plate is provided with a connecting rod, and the connecting rod is connected to the striking block. The striking block is movably connected to the equipment box, and a piezoelectric ceramic block is arranged inside the equipment box.

[0023] Preferably, the storage mechanism includes a toroidal energy storage battery electrically connected to the piezoelectric ceramic block, and the toroidal energy storage battery is used to rectify and store the electrical energy generated by the piezoelectric ceramic block.

[0024] Preferably, the scraping mechanism includes a connecting rod, a mounting platform, a scraping push rod, and a scraping block. The two ends of the connecting rod are respectively connected to the fixing block and the mounting platform. The scraping push rod is electrically connected to the annular energy storage battery. The scraping push rod is connected to the scraping block, and the scraping block is sleeved on the outside of the suction pipe.

[0025] Compared with the prior art, the beneficial effects of this invention are as follows: The present application adopts a shaftless design in its structure, with all liquid transport within the pump body flow channel driven by a shaftless mechanism. There is no tip clearance at the impeller rim, thus eliminating tip clearance leakage and significantly reducing pump volumetric and hydraulic losses, thereby improving pump operating efficiency. An integrated pressure-cooling system utilizes the medium's own pressure to achieve efficient heat dissipation, adapting to extreme deep-sea conditions. The coordination between air extraction and the guide vane mechanism optimizes the gas-liquid two-phase flow, enhancing mixed transport stability. The cleaning component achieves self-powered operation through kinetic-electrical energy conversion, and combined with the scraping mechanism, automatically maintains unobstructed air extraction pipes, extending equipment lifespan. The overall layout is compact, with the flow channel and guide components collaboratively optimizing the fluid path, significantly improving the efficiency and reliability of oil and gas mixed transport, providing more efficient equipment support for deep-sea oil and gas resource development. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the axial view structure of the present invention;

[0027] Figure 2This is a schematic cross-sectional view of the present invention;

[0028] Figure 3 This is a schematic diagram of the internal structure of the pump body of the present invention. Figure 1 ;

[0029] Figure 4 This is a schematic diagram of the internal structure of the pump body of the present invention. Figure 2 (The imported guide vanes are concealed.)

[0030] Figure 5 This is a schematic diagram of the inlet guide vane structure of the present invention;

[0031] Figure 6 This is a schematic diagram showing the positional structure of drive gear one, drive gear two, transmission gear one, and transmission gear two of the present invention;

[0032] Figure 7 This is a schematic diagram showing the location and structure of the main outlet pipe and the extraction pipe of the present invention;

[0033] Figure 8 This is a schematic diagram showing the location and structure of the air extraction pipe and the scraping mechanism of the present invention;

[0034] Figure 9 This is a schematic diagram of the connection structure of the fixing ring, spring steel sheet and connecting rod of the present invention;

[0035] Figure 10 This is a schematic diagram of the internal structure of the fixing ring of the present invention (the fixing ring is rendered in perspective).

[0036] Figure 11 This is a schematic diagram of the internal structure of the device box of the present invention (the device box has been rendered in perspective).

[0037] In the diagram: 1. Pump body, 2. Flow channel, 3. Extraction pipe, 4. Guide agitator, 5. Pump impeller, 6. Inlet guide vane, 7. Outlet guide vane, 8. Drive motor, 9. Drive gear one, 10. Drive gear two, 11. Transmission gear one, 12. Transmission gear two, 13. Pressure tapping pipe, 14. Liquid ring vacuum pump, 15. Exhaust pipe, 16. Fixing ring, 17. Spring steel sheet, 18. Connecting rod, 19. Impact block, 20. Equipment box, 21. Piezoelectric ceramic block, 22. Ring energy storage battery, 23. Connecting rod, 24. Mounting platform, 25. Scraping push rod, 26. Scraping block, 101. Inlet connecting pipe, 102. Outlet main pipe. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] Please see Figure 1-11 The present invention provides a technical solution:

[0040] A deep-sea shaftless helical axial flow oil-gas mixed transport pump, as per the instruction manual. Figure 1 As shown, it includes:

[0041] Pump body 1, pump body 1 is provided with flow channel 2, and inlet pipe 101 and outlet main pipe 102 are respectively provided on both sides of flow channel 2;

[0042] The flow guiding assembly includes an inlet flow guiding mechanism, a pumping mechanism, a driving mechanism, and a guide vane mechanism. The inlet flow guiding mechanism is used to input the fluid entering the inlet pipe 101 into the flow channel 2. The pumping mechanism is used to transport the fluid to the outlet main pipe 102. The driving mechanism is used to drive the inlet flow guiding mechanism and the pumping mechanism to work. Guide vane mechanisms are provided on both sides of the pumping mechanism to guide the flow direction of the fluid.

[0043] Pressure cooling assembly, which is used to cool the pump body 1 using the liquid inside the pump;

[0044] An air extraction assembly includes an air extraction mechanism and an air extraction pipe 3. The air extraction pipe 3 is driven by the air extraction mechanism, which is used to extract the air generated by the rotation of the guide vane mechanism and deliver it to the pump outlet main pipe 102.

[0045] The cleaning component includes an energy conversion mechanism, a storage mechanism, and a scraping mechanism. The energy conversion mechanism converts the kinetic energy of the suction pipe 3 into electrical energy and stores it in the storage mechanism. The scraping mechanism removes the deposits from the air inlet of the suction pipe 3.

[0046] The inlet guiding mechanism includes a guiding agitator 4, which has helical blades inside. The guiding agitator 4 is used to enter the fluid input channel 2 of the inlet pipe 101. The pumping mechanism includes a pump impeller 5, which is located in the channel 2 and is used to transport the fluid to the outlet main pipe 102. The blades of the guiding agitator 4 and the pump impeller 5 are both helical blades. In actual use, different numbers of blades can be arranged through parameter calculation to achieve efficient operation and improve the pump's operating efficiency. The axial force generated by the guiding agitator 4 and the pump impeller 5 during operation is mainly borne directly by the thrust bearings on both sides of the impeller in the guiding agitator 4 and the pump impeller 5, thereby achieving balance. The inner ring of the bearing is interference-fitted with the impeller and fixed by retaining rings on both sides of the impeller to prevent the pump from malfunctioning during operation. An accident occurred due to slippage of the inner ring of the bearing during the process. The outer ring of the bearing is axially fixed to the stepped surface on the pump body 1 cover, and the outer ring of the bearing is radially fixed by a partial interference fit with the pump body 1 cover, thereby preventing movement during installation and operation and ensuring stable operation of the pump unit. During operation, to prevent the liquid being pumped into the oil tank inside the pump body 1, a special magnetic seal and fixing ring are designed on the outermost side of the impeller, which effectively solves the problem of lubricating oil failure caused by liquid entering the oil tank inside the pump. The liquid inside the pump body and the oil tank inside the pump body are sealed by magnetic sealing, which is highly efficient and reliable. The pump impeller 5 is composed of multiple blades, which are installed at a specific angle. Driven by the drive mechanism, it rotates at high speed and can generate a large centrifugal force, thereby efficiently transporting the fluid to the outlet main pipeline 102.

[0047] The guide vane mechanism includes an inlet guide vane 6 and an outlet guide vane 7. The inlet guide vane 6 is located between the pump impeller 5 and the flow agitator 4. The inlet guide vane 6 and the outlet guide vane 7 are respectively located on both sides of the pump impeller 5. The main function of the inlet guide vane 6 is to initially guide and rectify the fluid coming out of the flow agitator 4, so that the fluid can enter the pump impeller 5 at a relatively stable and appropriate angle, reducing the impact of the fluid on the pump impeller 5 and improving the working efficiency of the pump impeller 5. The outlet guide vane 7 further guides the fluid after it has been accelerated by the pump impeller 5, so that the fluid can flow more smoothly and steadily to the outlet main pipe 102, effectively reducing the turbulence and energy loss of the fluid during the flow process, and further improving the pump's delivery efficiency and performance.

[0048] The drive mechanism includes a drive motor 8, a drive gear 9, a drive gear 10, a transmission gear 11, and a transmission gear 12. The drive motor 8 is connected to the drive gear 9 via a key, and the drive gear 9 is connected to the drive gear 10 via a key. The drive gear 9 and the transmission gear 11 mesh with each other. The transmission gear 11 is sleeved on the outside of the pump impeller 5, and the transmission gear 11 and the pump impeller 5 are fixedly connected. Therefore, when the transmission gear 11 rotates, it will drive the pump impeller 5 to rotate. The drive gear 10 and the transmission gear 12 mesh with each other. The transmission gear 12 is sleeved on the outside of the flow guide agitator 4, and the transmission gear 12 and the flow guide agitator 4 are fixedly connected. Therefore, when the transmission gear 12 rotates, it will drive the flow guide agitator 4 to rotate. The drive motor 8, as the power source of the entire drive mechanism, has the characteristics of high power and high torque output, which can provide sufficient power to the pump impeller 5 and the flow guide agitator 4, ensuring their stable and efficient operation in the deep-sea environment. Drive gear 9 and drive gear 10 play a role in transmitting and regulating power during the transmission process. Their meshing with transmission gear 11 and transmission gear 12 achieves precise power distribution, enabling the pump impeller 5 and the flow guide agitator 4 to operate at predetermined speeds and directions. Transmission gear 11 and transmission gear 12 are connected to the pump impeller 5 and the flow guide agitator 4 respectively, accurately transmitting the power from the drive motor 8 to the corresponding components, ensuring the coordinated operation of the entire pumping system.

[0049] The pressure cooling assembly includes a pressure pipe 13, one end of which is connected to the outlet of the pump impeller 5, and the other end of which is connected to the inlet of the flow guide agitator 4.

[0050] The air extraction mechanism includes a liquid ring vacuum pump 14 and an exhaust pipe 15. The pumping end of the liquid ring vacuum pump 14 is connected to a pumping pipe 3, and the exhaust end of the liquid ring vacuum pump 14 is connected to one end of the exhaust pipe 15. The other end of the exhaust pipe 15 is connected to the main outlet pipe 102. The liquid ring vacuum pump 14 utilizes the circulation of liquid to create a vacuum environment, enabling it to quickly and efficiently extract the air generated by the blade rotation. The pumping pipe 3 connected to its pumping end is rationally designed to ensure that there are no leaks or blockages during the extraction process, guaranteeing the continuity and stability of the extraction. The exhaust pipe 15 is responsible for delivering the extracted air to the main outlet pipe 102.

[0051] The energy conversion mechanism includes a fixed ring 16, spring steel plates 17, connecting rods 18, striking blocks 19, an equipment box 20, and piezoelectric ceramic blocks 21. The fixed ring 16 is sleeved on the outside of the suction pipe 3, and a clamping cavity is opened inside the fixed ring 16. Several spring steel plates 17 are arranged around the clamping cavity. Each spring steel plate 17 is equipped with a connecting rod 18, which is connected to the striking block 19. The striking block 19 is movably connected to the equipment box 20. The piezoelectric ceramic blocks 21 are arranged inside the equipment box 20. When the suction pipe 3 shakes, it will cause the spring steel plates 17 to deform. The force generated by the deformation of the spring steel plates 17 is transmitted to the striking blocks 19 through the connecting rods 18, causing the striking blocks 19 to reciprocate within the equipment box 20. The reciprocating motion of the striking block 19 continuously impacts the piezoelectric ceramic block 21. Based on the piezoelectric effect, the piezoelectric ceramic block 21 efficiently converts mechanical energy into electrical energy and stores it in the toroidal energy storage battery 22.

[0052] The storage mechanism includes a toroidal energy storage battery 22, which is electrically connected to the piezoelectric ceramic block 21. A rectifier is installed inside the toroidal energy storage battery 22, which is used to rectify and store the electrical energy generated by the piezoelectric ceramic block 21.

[0053] The scraping mechanism includes a connecting rod 23, a mounting platform 24, a scraping push rod 25, and a scraping block 26. The connecting rod 23 is connected at both ends to a fixed block and the mounting platform 24, respectively. The scraping push rod 25 is electrically connected to a toroidal energy storage battery 22. The scraping push rod 25 is connected to the scraping block 26, which is fitted onto the outside of the suction pipe 3. When the controller of the toroidal energy storage battery 22 controls the output of electrical energy, the scraping push rod 25 starts working under electrical drive, generating linear reciprocating motion. This motion of the scraping push rod 25 causes the connected scraping block 26 to slide along the outside of the suction pipe 3. During the sliding process, the surface of the scraping block 26 contacts the deposits at the air inlet of the suction pipe 3, and scrapes the deposits off the suction pipe 3 through pressure and friction. The mounting platform 24 provides stable support and a mounting position for the scraping push rod 25 and the scraping block 26, ensuring the stability and reliability of the scraping mechanism during operation. The connecting rod 23 serves to connect the fixing block and the mounting platform 24. The wire connecting the drive motor 8 passes through the inside of the connecting rod 23 and is used to connect the annular energy storage battery 22 and the scraping push rod 25.

[0054] Working principle: When the deep-sea shaftless spiral axial flow oil and gas mixed transport pump starts to work, the fluid first enters through the inlet pipe 101. The flow guide agitator 4 of the inlet flow guide mechanism uses its internal spiral blades to initially guide and stir the fluid, so that the fluid has a force pointing in the direction of the outlet, making it move more smoothly along the flow channel 2 of the pump body 1.

[0055] The drive motor 8 drives the drive gear 9 to rotate. The drive gear 9, through meshing with the transmission gear 11, drives the pump impeller 5 to rotate. The pump impeller 5 rotates at high speed in the flow channel 2, conveying the fluid to the outlet main pipe 102. On the other hand, the drive gear 9 drives the drive gear 10 to rotate. The drive gear 10, through meshing with the transmission gear 12, drives the flow guide agitator 4 to work, continuously guiding the incoming fluid.

[0056] During fluid transport, the inlet guide vanes 6 and outlet guide vanes 7, located on both sides of the pump impeller 5, guide the flow direction of the fluid (the inlet guide vanes 6 straighten the liquid entering the pump impeller 5 to the same direction, and the outlet guide vanes 7 straighten the liquid exiting the pump impeller 5 to the same direction), so that the fluid flows in a predetermined direction and improves the transport efficiency.

[0057] The pressure cooling assembly plays a role. One end of the pressure pipe 13 is connected to the outlet of the pump impeller 5, and the other end is connected to the inlet of the flow guide agitator 4. The flow of liquid in the pump in the pressure pipe 13 cools the pump body 1 and prevents the pump body 1 from overheating due to long-term operation, which would affect its performance.

[0058] At the same time, the rotation of the guide vane mechanism generates air, and the liquid ring vacuum pump 14 of the air pumping component starts to work. The air pumping pipe 3 connected to its pumping end is driven by the liquid ring vacuum pump 14 to pump away the air generated by the rotation of the guide vane mechanism and deliver it to the pump outlet main pipe 102 through the exhaust pipe 15.

[0059] During the operation of the suction pipe 3, factors such as fluid flow may cause the suction pipe 3 to shake. The energy conversion mechanism of the cleaning component starts to work. The fixing ring 16 is sleeved on the outside of the suction pipe 3. When the suction pipe 3 shakes, it drives the spring steel plate 17 to vibrate. The spring steel plate 17 causes the striking block 19 to move inside the equipment box 20 through the connecting rod 18. The striking block 19 strikes the piezoelectric ceramic block 21, converting the kinetic energy of the shaking of the suction pipe 3 into electrical energy.

[0060] The converted electrical energy is rectified and stored in the toroidal energy storage battery 22 of the storage mechanism. When it is necessary to clean the deposits at the air inlet of the suction pipe 3, the toroidal energy storage battery 22 supplies power to the scraping push rod 25 of the scraping mechanism. The scraping push rod 25 pushes the scraping block 26 to reciprocate on the outside of the suction pipe 3 to scrape off the deposits at the air inlet of the suction pipe 3, ensuring the normal operation of the suction pipe 3.

[0061] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A deep sea shaftless helico-axial flow multiphase pump characterized in that, The utility model relates to a pump, which comprises: a pump body provided with a flow channel, an inlet pipe and an outlet pipe arranged on both sides of the flow channel respectively; a flow guide assembly, which comprises an inlet flow guide mechanism, a pumping mechanism, a driving mechanism and a guide vane mechanism, the inlet flow guide mechanism is used for inputting fluid entering the inlet pipe into the flow channel, the pumping mechanism is used for conveying fluid to the outlet pipe, the driving mechanism is used for driving the inlet flow guide mechanism and the pumping mechanism to work, and the pumping mechanism is provided with the guide vane mechanism on both sides thereof, the guide vane mechanism is used for guiding the flow direction of fluid; a pressure lead cooling assembly, which is used for cooling the pump body by using liquid in the pump; an air pumping assembly, which comprises a pumping mechanism and a pumping pipe, the pumping pipe is driven by the pumping mechanism, the pumping mechanism is used for pumping away air generated by the rotation of the guide vane mechanism and conveying the air to the outlet pipe of the pump; a cleaning assembly, which comprises an energy conversion mechanism, a storage mechanism and a scraping mechanism, the energy conversion mechanism is used for converting the shaking kinetic energy of the pumping pipe into electric energy and inputting the electric energy into the storage mechanism for storage, and the scraping mechanism is used for scraping attachments on the air inlet of the pumping pipe; the pumping mechanism comprises a liquid ring vacuum pump and an exhaust pipe, the pumping pipe is connected to the pumping end of the liquid ring vacuum pump, the exhaust end of the liquid ring vacuum pump is connected to one end of the exhaust pipe, and the other end of the exhaust pipe is connected to the outlet pipe; the energy conversion mechanism comprises a fixed ring, spring steel sheets, connecting rods, a percussion block, a device box and a piezoelectric ceramic block, the fixed ring is sleeved outside the pumping pipe, a clamping cavity is formed in the fixed ring, a plurality of spring steel sheets are arranged around the clamping cavity, each spring steel sheet is provided with a connecting rod, the connecting rod is connected to the percussion block, the percussion block is movably connected to the device box, and the device box is internally provided with a piezoelectric ceramic block.

2. The deep-sea shaftless helico-axial flow oil and gas multiphase pump according to claim 1, characterized in that: the inlet flow guide mechanism comprises a flow guide stirrer, the flow guide stirrer is internally provided with a spiral blade, and the flow guide stirrer is used for inputting fluid entering the inlet pipe into the flow channel.

3. The deepwater shaftless helico-axial mixed-flow pump according to claim 2, characterized in that: the pumping mechanism comprises a pump impeller, the pump impeller is arranged in the flow channel, and the pump impeller is used for conveying fluid to the outlet pipe.

4. The deepwater shaftless helico-axial mixed-flow pump according to claim 3, characterized in that: the guide vane mechanism comprises inlet guide vanes and outlet guide vanes, the inlet guide vanes are arranged between the pump impeller and the flow guide stirrer, and the inlet guide vanes and the outlet guide vanes are arranged on both sides of the pump impeller respectively.

5. A deep sea shaftless helico-axial mixed flow pump for oil and gas according to claim 4, characterized in that: the driving mechanism comprises a driving motor, a driving gear one, a driving gear two, a transmission gear one and a transmission gear two, the driving motor is connected with the driving gear one through a key, the driving gear one is connected with the driving gear two through a key, the driving gear one and the transmission gear one are meshed with each other, the transmission gear one is sleeved outside the pump impeller, the driving gear two and the transmission gear two are meshed with each other, and the transmission gear two is sleeved outside the flow guide stirrer.

6. A deep sea shaftless helico-axial flow multiphase pump according to claim 4, characterized in that: The pressure leading cooling assembly comprises a pressure leading pipe, one end of which is connected to the outlet of the pump impeller, and the other end of which is connected to the inlet of the flow guide stirrer.

7. The deep-sea shaftless helico-axial flow oil and gas multiphase pump according to claim 1, characterized in that: The storage mechanism comprises a ring-shaped energy storage battery electrically connected to the piezoelectric ceramic block, which is used to rectify and store the electric energy generated by the piezoelectric ceramic block.

8. The deepwater shaftless helico-axial flow multiphase pump according to claim 7, characterized in that: The scraping mechanism comprises a connecting rod, a mounting table, a scraping push rod and a scraping block, the connecting rod is connected to the fixed block and the mounting table at two ends respectively, the scraping push rod is electrically connected to the ring-shaped energy storage battery, the scraping push rod is connected with the scraping block, and the scraping block is sleeved outside the air exhaust pipe.

Images