A submersible centrifugal pump with integrated machine and pump

Abstract

The invention discloses a submersible centrifugal pump with a machine and a pump integrated therein, comprising: a main body unit, comprising a base and a protective shell which is fixedly connected to the upper surface of the base by snap-fitting, and a snap-fitting rod is inserted into the lower outer surface of the protective shell; the invention utilizes a separation air hole funnel, a spring and a lifting ring plate to make the crude oil entering the lower conical funnel and the upper conical funnel flow into an upper material pipe, thereby utilizing a rotating shaft to drive a spiral blade to rotate, and the spiral blade drives the crude oil to rotate, so that a strong rotational motion is generated in the oil-gas mixture, thereby achieving separation, so that the crude oil, under the action of the spiral blade and through the grid structure at the center of the partition plate, causes the gas to rise into a gas collection frame, and then the separated gas is discharged to the outside through an exhaust pipe, thereby avoiding cavitation during the contact between a large amount of gas carried in the crude oil and the blades in the subsequent extraction process.

Description

Technical Field

[0001] The invention relates to the technical field of submersible centrifugal pump structures, and in particular to a submersible centrifugal pump with a motor and a pump integrated therein. Background Art

[0002] Submersible centrifugal pump (abbreviated as submersible electric pump) is a multi-stage centrifugal pump working underground. It uses oil pipe to lower the centrifugal pump and submersible motor into the well. The motor drives the multi-stage centrifugal pump to rotate to generate centrifugal force, and lifts the crude oil in the well to the ground. It is a rodless pump oil production equipment that is widely used in various oil fields.

[0003] Most of the existing submersible centrifugal pumps are designed as an integral structure. This design cannot be partially assembled or disassembled with current technology. When part of the structure is damaged, the entire equipment must be disassembled to assemble and disassemble the parts in the upper and lower joints, making equipment maintenance an inefficient and tedious task. While disassembling and assembling the pump body many times, it will also cause damage to the various connection parts of the device, thereby reducing the service life of the equipment. Summary of the invention

[0004] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] In view of the problems existing in the existing submersible centrifugal pump with integrated motor and pump, the present invention is proposed.

[0006] Therefore, an object of the present invention is to provide a submersible centrifugal pump with an integrated motor and pump, which is suitable for solving the problems of filter blockage and reduced heat exchange efficiency.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a submersible centrifugal pump with integrated motor and pump, the submersible centrifugal pump comprising:

[0008] The main unit comprises a base and a protective shell fixedly connected to the upper surface of the base, a clamping rod is inserted into the lower outer surface of the protective shell, one end of the clamping rod is fixedly connected to a conical rubber pad, and a load-bearing ring plate is fixedly connected to the upper outer surface of the protective shell;

[0009] A separation and feeding unit, comprising a first support rod fixedly connected to the upper surface of a load-bearing ring plate and a lower conical funnel connected to the upper surface of a protective shell by clamping, the upper surface of the lower conical funnel is connected to the upper conical funnel by a connecting pipe, and the outer surface of the connecting pipe is fixedly connected to an auxiliary mounting ring;

[0010] A rotating material guiding unit comprises an upper conical funnel with a feeding pipe fixedly connected to the upper surface of the feeding pipe and a protective tube fixedly connected to the upper surface of the feeding pipe, the outer surface of the protective tube is fixedly connected to a plurality of circumferentially distributed connecting blocks, the number of the protective tubes is several, and the plurality of protective tubes are equidistantly engaged with each other, and the outer surface of the protective tube is fixedly connected to a fixing block.

[0011] As a preferred solution of the submersible centrifugal pump with integrated machine and pump described in the present invention, wherein: an embedded block is fixedly connected in the base, a feed filter plate is fixedly connected to one side of the embedded block, the feed filter plate is snap-connected to the inner surface of the base, a snap-fit ​​casing is fixedly connected to the inner surface of the protective shell, a stator is fixedly connected in the snap-fit ​​casing, a central axis rod is rotatably connected in the snap-fit ​​casing, and a rotor is fixedly connected to the outer surface of the central axis rod.

[0012] As a preferred solution of the submersible centrifugal pump with integrated machine and pump described in the present invention, wherein: a sealing cover plate is fixedly connected to the upper surface of the engaging casing, a rotating shaft is fixedly connected to the upper surface of the central axis rod, and one end of the rotating shaft passes through one side of the sealing cover plate, a feed groove is provided in the base, connecting grooves are provided on both sides of the conical rubber pad, bolts are arranged in the connecting grooves, and a fixing ring rod is fixedly connected to the lower surface of the sealing cover plate.

[0013] As a preferred solution of the machine-pump integrated submersible centrifugal pump described in the present invention, wherein: an insert rod is inserted into the first support rod, the insert rod is fixedly connected to the second support rod at one end away from the first support rod, a support ring plate is fixedly connected to the upper surface of the second support rod, and a first screw rod is connected through one side of the first support rod and the insert rod.

[0014] As a preferred solution of the machine-pump integrated submersible centrifugal pump described in the present invention, one end of the first screw is threadedly connected to the outer surface of the auxiliary mounting ring, the support ring plate is fixedly connected to the outer surface of the feeding pipe, the outer surface of the rotating shaft is fixedly connected to a separation pore funnel, the outer surface of the separation pore funnel is fixedly connected to a spiral sheet, the upper surface of the separation pore funnel is rotatably connected to a partition plate, the outer side of the partition plate is fixedly connected to the inner surface of the feeding pipe, the lower surface of the partition plate is provided with a trapezoidal groove, and a lifting ring plate is slidably connected in the trapezoidal groove.

[0015] As a preferred solution of the submersible centrifugal pump with integrated machine and pump described in the present invention, wherein: the lower surface of the lifting ring plate is fixedly connected to a spring, the lower surface of the spring is fixedly connected to the upper surface of the partition plate, the upper surface of the partition plate is fixedly connected to a gas collecting frame, the outer surface of the gas collecting frame is fixedly connected to an air guide pipe, and an air distribution groove is opened in the feeding pipe.

[0016] As a preferred solution of the submersible centrifugal pump with integrated machine and pump described in the present invention, wherein: the feeding pipe and the protective pipe are fixedly connected with a silo, the inner surface of the silo is fixedly connected with a first blocking ring and a second blocking ring, the first blocking ring and the second blocking ring are rotatably connected with a rotating plate, and the upper surface of the rotating plate is fixedly connected with blades.

[0017] As a preferred solution of the machine-pump integrated submersible centrifugal pump described in the present invention, wherein: a connecting support rod is fixedly connected to the upper surface of the second support rod, one end of the connecting support rod passes through the upper surface of the support ring plate, the upper surface of the connecting support rod is inserted and connected to the lower surface of the fixed block, the lower surface of the connecting block is fixedly connected with an insert plate, one side of the insert plate and one side of the fixed block are fixedly connected by a second screw, and the other side of the blade is fixedly connected to a rotating disk.

[0018] As a preferred solution of the submersible centrifugal pump with integrated machine and pump described in the present invention, wherein: the outer side of the rotating disk is an inclined plane, a stop plate is provided on the side of the rotating disk away from the blades, the feeding pipe and one side of the protective pipe are fixedly connected with a guide pipe, one group of the protective pipes is fixedly connected to the outer surface with a discharge pipe, the upper surface of the protective pipe is fixedly connected to a traction rope cover plate, one end of the air guide pipe is fixedly connected to an exhaust pipe, and the upper surface of the exhaust pipe passes through the traction rope cover plate.

[0019] As a preferred solution of the submersible centrifugal pump with integrated machine and pump described in the present invention, wherein: the center position of the partition plate is a grid structure, an oil inlet pipe is fixedly connected to one side of the outer surface of the upper conical funnel, an insertion plate is fixedly connected to the lower surface of the through-traction rope cover plate, a circular groove is provided at the center of the rotating plate, the first blocking ring and the second blocking ring have the same structure, and the first blocking ring and the second blocking ring are symmetrically distributed.

[0020] Beneficial effects of the present invention:

[0021] 1. The base, protective housing, stator, rotor, central axis and snap-on housing are used to make the area between the protective housing and the snap-on housing suck the crude oil at the bottom of the base into the equipment, so that the feed filter plate filters the crude oil, preventing the equipment from sucking impurities in the crude oil into the equipment during the extraction process, thereby preventing the equipment from being damaged due to impurities. Furthermore, through the mutual cooperation between the stator and the rotor, the central axis drives the rotating shaft to rotate, thereby driving other structures to rotate through the rotating shaft, and through the connection and combination between the various components, the equipment is assembled in an integrated manner, so that the damaged position can be quickly disassembled and repaired;

[0022] 2. The separation pore funnel, gas collection frame, auxiliary mounting ring, spiral sheet, partition plate, spring and lifting ring plate are used to make the crude oil entering the lower conical funnel and the upper conical funnel flow into the upper material pipe, so that the spiral sheet is driven to rotate by the rotating shaft, and the crude oil is driven to rotate by the spiral sheet, so that the oil-gas mixture generates a strong rotational motion inside, thereby achieving separation, and the crude oil moves upward along the inner wall of the upper material pipe under the action of the spiral sheet. Further, the lifting ring plate is lifted upward by the extrusion force during the rising process of the crude oil, so that the lifting ring plate allows the crude oil to enter the equipment during the lifting process. At the same time, the separation pore funnel is used to filter the gas carried in the crude oil, so that the light gas moves closer to the center of the rotating shaft during the rotation of the crude oil, and the gas rises to the gas collection frame through the grid structure at the center of the partition plate, and then the separated gas is discharged outward through the exhaust pipe, so as to avoid cavitation during the contact between a large amount of gas carried in the crude oil and the blades in the subsequent extraction process;

[0023] 3. The crude oil entering the feeding pipe is introduced into the protective pipe on the lower surface of the traction rope cover through the guide pipe by using the guide pipe, the insert plate, the protective pipe, the discharge pipe, the rotating disk, the first blocking ring and the second blocking ring, so that the guide pipe can divert the crude oil entering the feeding pipe, so that the rotating shaft drives the rotating disk to rotate, and the blades drive the crude oil inside the equipment to be extracted, and at the same time, multiple sets of first blocking rings and second blocking rings are used to gradually increase the flow speed of the crude oil, so that the crude oil can be extracted from the inside of the equipment to the outside through the discharge pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0025] Figure 1 This is a schematic diagram of the overall structure of a submersible centrifugal pump with integrated motor and pump proposed by the present invention;

[0026] Figure 2 This is a schematic diagram of the overall cross-sectional structure of a submersible centrifugal pump with integrated motor and pump proposed by the present invention;

[0027] Figure 3 This is a schematic diagram of the structure of a conical rubber pad of a submersible centrifugal pump with integrated motor and pump proposed by the present invention;

[0028] Figure 4 A schematic diagram of the stator and rotor distribution structure of a submersible centrifugal pump with integrated motor and pump proposed by the present invention;

[0029] Figure 5 This is a schematic structural diagram of a separation and feeding unit of a submersible centrifugal pump with integrated motor and pump proposed by the present invention;

[0030] Figure 6 This is a schematic structural diagram of a rotary material guide unit of a submersible centrifugal pump with integrated machine and pump proposed by the present invention;

[0031] Figure 7 A schematic diagram of the blade distribution structure of a submersible centrifugal pump with integrated motor and pump proposed by the present invention;

[0032] Figure 8 This is a schematic diagram of the distribution structure of the first blocker ring and the second blocker ring of a submersible centrifugal pump with integrated machine and pump proposed by the present invention.

[0033] Description of the drawings: 100, main unit; 101, base; 102, conical rubber pad; 103, protective shell; 104, load-bearing ring plate; 105, embedded block; 106, feed filter plate; 107, feed trough; 108, stator; 109, rotor; 110, central axis rod; 111, snap-fit ​​housing; 112, snap-fit ​​rod; 113, connecting groove; 114, bolt; 115, fixing ring rod; 116, sealing cover plate; 117, rotating shaft; 200, separation and feeding unit; 201, lower conical funnel; 202, first support rod; 203, first screw; 204, second support rod; 205, upper conical funnel; 206, support ring plate; 207, connecting pipe; 208, separation pore Funnel; 209, gas collecting frame; 210, gas distribution groove; 211, plug-in rod; 212, auxiliary mounting ring; 213, spiral sheet; 214, partition plate; 215, spring; 216, lifting ring plate; 217, air guide pipe; 300, rotating material guide unit; 301, feeding pipe; 302, connecting support rod; 303, guide pipe; 304, insertion plate; 305, protection pipe; 306, discharge pipe; 307, connecting block; 308, traction rope cover plate; 309, fixed block; 310, rotating plate; 311, exhaust pipe; 312, first blocking ring; 313, blade; 314, rotating disk; 315, second screw; 316, second blocking ring; 317, back plate; 318, silo. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0035] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0036] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it an embodiment that is mutually exclusive with other embodiments, either individually or selectively.

[0037] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0038] Embodiment 1:

[0039] Reference Figure 1 - Figure 8 , which is an embodiment of the present invention, provides a submersible centrifugal pump with an integrated machine and pump, including a main unit 100, a separation and feeding unit 200 and a rotating material guiding unit 300.

[0040] The main unit 100 includes a base 101 and a protective shell 103 fixedly connected to the upper surface of the base 101, a clamping rod 112 is inserted into the lower outer surface of the protective shell 103, one end of the clamping rod 112 is fixedly connected to the conical rubber pad 102, and a load-bearing ring plate 104 is fixedly connected to the upper outer surface of the protective shell 103;

[0041] Secondly, the separation and loading unit 200 includes a first support rod 202 fixedly connected to the upper surface of the load-bearing ring plate 104 and a lower conical funnel 201 connected to the upper surface of the protective shell 103 by clamping, and the upper surface of the lower conical funnel 201 is connected to the upper conical funnel 205 by clamping through a connecting pipe 207, and the outer surface of the connecting pipe 207 is fixedly connected to an auxiliary mounting ring 212;

[0042] Finally, the rotating material guiding unit 300 includes an upper conical funnel 205 with a feeding tube 301 fixedly connected to the upper surface of the feeding tube 301 and a protective tube 305 fixedly connected to the upper surface of the feeding tube 301, a plurality of circumferentially distributed connecting blocks 307 fixedly connected to the outer surface of the protective tube 305, a plurality of protective tubes 305 are equidistantly engaged with each other, and a fixing block 309 is fixedly connected to the outer surface of the protective tube 305.

[0043] Furthermore, an embedded block 105 is fixedly connected inside the base 101, a feed filter plate 106 is fixedly connected to one side of the embedded block 105, the feed filter plate 106 is snap-connected to the inner surface of the base 101, a snap-connected casing 111 is fixedly connected to the inner surface of the protective shell 103, a stator 108 is fixedly connected inside the snap-connected casing 111, a central axis rod 110 is rotatably connected inside the snap-connected casing 111, a rotor 109 is fixedly connected to the outer surface of the central axis rod 110, wherein the lower surface of the central axis rod 110 is connected to the inner lower surface of the snap-connected casing 111 through a bearing, so that the central axis rod 110 can rotate quickly under the action of the stator 108 and the rotor 109, further, the space between the snap-connected casing 111 and the protective shell 103 is utilized to assist in the extraction of raw materials, thereby assisting the oil inlet pipe to increase the amount of oil entering the equipment.

[0044] Furthermore, a sealing cover plate 116 is fixedly connected to the upper surface of the locking casing 111, a rotating shaft 117 is fixedly connected to the upper surface of the central axis rod 110, and one end of the rotating shaft 117 passes through one side of the sealing cover plate 116, a feeding groove 107 is opened in the base 101, connecting grooves 113 are opened on both sides of the conical rubber pad 102, bolts 114 are arranged in the connecting grooves 113, and a fixing ring rod 115 is fixedly connected to the lower surface of the sealing cover plate 116, wherein the conical rubber pad 102 is spliced ​​with two semicircular rings, so that the locking rod 112 can be inserted into it in turn when in use, so that while improving the sealing effect of the equipment, the connection effect between the base 101 and the protective shell 103 is improved.

[0045] Furthermore, an insert rod 211 is inserted into the first support rod 202, and the insert rod 211 is fixedly connected to the second support rod 204 at one end away from the first support rod 202. The upper surface of the second support rod 204 is fixedly connected to the support ring plate 206, and the first support rod 202 and one side of the insert rod 211 are penetrated by the first screw rod 203, wherein the rotating material guiding unit 300 above the equipment is supported by multiple groups of symmetrically distributed first support rods 202 to prevent the connecting pipe 207 from bearing too much weight during operation, which may cause damage to the equipment, thereby improving the protection capability of the equipment to a certain extent.

[0046] Furthermore, a spring 215 is fixedly connected to the lower surface of the lifting ring plate 216, and the lower surface of the spring 215 is fixedly connected to the upper surface of the partition plate 214. A gas collecting frame 209 is fixedly connected to the upper surface of the partition plate 214, and an air guide pipe 217 is fixedly connected to the outer surface of the gas collecting frame 209. A gas separation groove 210 is opened in the feeding pipe 301, wherein the lifting ring plate 216 is pulled by the spring 215 to prevent it from being in a normal state. The lifting ring plate 216 and the partition plate 214 can block the trapezoidal groove under the action of the elastic potential energy of the spring 215 to prevent the crude oil from flowing back into the bottom of the equipment.

[0047] Furthermore, the center position of the partition plate 214 is a grid structure, an oil inlet pipe is fixedly connected to one side of the outer surface of the upper conical funnel 205, an insertion plate 304 is fixedly connected to the lower surface of the traction rope cover plate 308, and a circular groove is provided at the center of the rotating plate 310. The first blocking ring 312 and the second blocking ring 316 have the same structure, and the first blocking ring 312 and the second blocking ring 316 are symmetrically distributed. Among them, the grid structure at the center position of the partition plate 214 does not rotate synchronously with the rotating shaft 117, so that the gas separated from the crude oil can move upward through the grid structure in the middle of the partition plate 214. Furthermore, the oil inlet pipe is used to improve the effect of crude oil entering the interior of the equipment.

[0048] Working principle: The base 101, the protective shell 103, the stator 108, the rotor 109, the central shaft 110 and the engaging shell 111 are used to make the area between the protective shell 103 and the engaging shell 111 suck the crude oil at the bottom of the base 101 into the equipment, so that the feed filter plate 106 filters the crude oil, preventing the equipment from sucking impurities in the crude oil into the equipment during the extraction process, thereby preventing the equipment from being damaged due to impurities. Furthermore, through the mutual cooperation of the stator 108 and the rotor 109, the central shaft 110 drives the rotating shaft 117 to rotate, thereby driving other structures to rotate through the rotating shaft 117. Through the connection and combination between the various components, the equipment is assembled in an integrated manner, so that the damaged position can be quickly disassembled and repaired;

[0049] The separation pore funnel 208, the gas collection frame 209, the auxiliary mounting ring 212, the spiral piece 213, the partition plate 214, the spring 215 and the lifting ring plate 216 are used to make the crude oil entering the lower conical funnel 201 and the upper conical funnel 205 flow into the upper material pipe 301, so that the spiral piece 213 is driven to rotate by the rotating shaft 117, and the crude oil is driven to rotate by the spiral piece 213, so that the oil-gas mixture generates a strong rotational motion inside, thereby achieving separation, and the crude oil moves upward along the inner wall of the upper material pipe 301 under the action of the spiral piece 213, and further, the crude oil rises and passes through the upper material pipe 301. The extrusion force during the process lifts the lifting ring plate 216 upward, so that the lifting ring plate 216 allows the crude oil to enter the equipment during the lifting process. At the same time, the separation pore funnel 208 is used to filter the gas carried in the crude oil, so that the light gas moves toward the center of the rotating shaft 117 during the rotation of the crude oil, and the gas rises to the gas collection frame 209 through the grid structure at the center of the partition plate 214, and then the separated gas is discharged to the outside through the exhaust pipe 311, thereby avoiding cavitation during the contact between a large amount of gas carried in the crude oil and the blades 313 during the subsequent extraction process;

[0050] By using the guide pipe 303, the insert plate 304, the protective pipe 305, the discharge pipe 306, the rotating disk 314, the first blocking ring 312 and the second blocking ring 316, the crude oil entering the feeding pipe 301 is introduced into the protective pipe 305 on the lower surface of the traction rope cover 308 through the guide pipe 303, so that the guide pipe 303 diverts the crude oil entering the feeding pipe 301, so that the rotating shaft 117 drives the rotating disk 314 to rotate, and the blades 313 drive the crude oil inside the equipment to be extracted, and at the same time, multiple groups of first blocking rings 312 and second blocking rings 316 are used to gradually increase the flow speed of the crude oil, so that the crude oil is extracted from the inside of the equipment to the outside through the discharge pipe 306.

[0051] Embodiment 2

[0052] Reference Figure 5 - Figure 8 , compared with the first embodiment, the difference lies in that: a silo 318 is fixedly connected to the feeding pipe 301 and the protection pipe 305, a first blocking ring 312 and a second blocking ring 316 are fixedly connected to the inner surface of the silo 318, a rotating plate 310 is rotatably connected to the first blocking ring 312 and the second blocking ring 316, and a blade 313 is fixedly connected to the upper surface of the rotating plate 310, wherein the first blocking ring 312 opens to discharge oil in a downward direction, and the second blocking ring 316 opens to discharge oil in an upward direction, so that the two can supply crude oil to the middle position together for oil processing, so that the flow rate in the crude oil extraction process is improved to a certain extent.

[0053] Furthermore, one end of the first screw 203 is threadedly connected to the outer surface of the auxiliary mounting ring 212, the support ring plate 206 is fixedly connected to the outer surface of the feeding tube 301, the outer surface of the rotating shaft 117 is fixedly connected to the separation pore funnel 208, the outer surface of the separation pore funnel 208 is fixedly connected to the spiral sheet 213, the upper surface of the separation pore funnel 208 is rotatably connected to the partition plate 214, the outer side of the partition plate 214 is fixedly connected to the inner surface of the feeding tube 301, the lower surface of the partition plate 214 is provided with a trapezoidal groove, and the lifting ring plate 216 is slidably connected in the trapezoidal groove, wherein the outer surface of the spiral sheet 213 contacts the inner surface of the upper conical funnel 205, and the outer surface of the spiral sheet 213 needs to slide with the surface of the upper conical funnel 205, further, the spiral sheet 213 is used to drive the crude oil to rotate and rise in the upper conical funnel 205 and the feeding tube 301, so that the air carried in the crude oil is separated during the rotation process, thereby reducing the gas carried by the crude oil during the rising process to a certain extent.

[0054] Furthermore, a connecting rod 302 is fixedly connected to the upper surface of the second support rod 204, one end of the connecting rod 302 passes through the upper surface of the supporting ring plate 206, the upper surface of the connecting rod 302 is inserted and connected to the lower surface of the fixing block 309, and the lower surface of the connecting block 307 is fixedly connected with an insertion plate 304, one side of the insertion plate 304 and one side of the fixing block 309 are fixedly connected by a second screw 315, and the other side of the blade 313 is fixedly connected to a rotating disk 314, wherein, through the cooperation of the connecting rod 302, the fixing block 309 and the connecting block 307, the feeding pipe 301 and the protective pipe 305 are assembled, so that the overall equipment can be quickly installed in an integrated manner, and at the same time, the assembled structure is used to enable the blade 313 to be disassembled and maintained at a fixed point when damaged.

[0055] Furthermore, the outer side of the rotating disk 314 is an inclined plane, and a stop plate 317 is provided on the side of the rotating disk 314 away from the blade 313. The feed pipe 301 and the protective tube 305 are fixedly connected to one side with a guide tube 303, and a discharge pipe 306 is fixedly connected to the outer surface of one group of protective tubes 305, and a traction rope cover plate 308 is fixedly connected to the upper surface of the protective tube 305. An exhaust pipe 311 is fixedly connected to one end of the air guide tube 217, and the upper surface of the exhaust pipe 311 passes through the traction rope cover plate 308, wherein the crude oil entering the feed pipe 301 is guided by the guide tube 303, and the traction rope cover plate 308 is used to connect the external rope and pipeline, thereby improving the pulling effect on the equipment to a certain extent, so that the equipment as a whole can rise or fall in the channel.

[0056] Working principle: First, the main unit 100 sucks crude oil through the feed trough 107 of the base 101. The feed filter plate 106 embedded in the base 101 performs preliminary filtration on the crude oil, intercepts impurities, and avoids internal wear of the equipment. An annular channel is formed between the protective shell 103 and the engaging shell 111. After the stator 108 is energized, it drives the rotor 109 to rotate, driving the central axis rod 110 to rotate at high speed, thereby sucking the crude oil under the base 101 upward. The conical rubber pad 102 is composed of two semicircular rings, which are fixed by the engaging rod 112 and the bolt 114 to ensure the sealing of the base 101 and the protective shell 103, and support quick disassembly and assembly. The engaging shell 111 is independent of the protective shell 103 and is connected to the sealing cover plate 116 through the fixing ring rod 115. When the thrust bearing or the sealing device needs to be maintained, it is only necessary to disassemble the engaging shell 111 without disassembling the pump as a whole, which significantly reduces the complexity of maintenance.

[0057] Secondly, the crude oil enters the upper conical funnel 205 through the lower conical funnel 201, and the spiral blade 213 driven by the rotating shaft 117 drives the crude oil to rotate, forming a centrifugal force field, and the lighter gas gathers toward the center of the rotating shaft 117, while the crude oil rises along the inner wall of the feeding pipe 301. The pores on the surface of the separation pore funnel 208 accelerate the escape of the gas, and the gas rises to the gas collection frame 209 through the grid structure in the center of the partition plate 214. The air guide pipe 217 is connected to the exhaust pipe 311 to discharge the separated gas out of the equipment to avoid damage to the blades 313 by cavitation. The lifting ring plate 216 is elastically connected to the partition plate 214 through the spring 215. When the crude oil rises, the extrusion force pushes the lifting ring plate 216 to move upward to allow the crude oil to pass; when the pressure decreases, the spring 215 is reset to block the trapezoidal groove to prevent the crude oil from flowing back to the bottom;

[0058] Next, after the crude oil enters the feeding pipe 301, it is diverted to the silo 318 in the protection pipe 305 through the guide pipe 303. The opening directions of the first blocking ring 312 and the second blocking ring 316 are opposite, forming a two-way constraint, forcing the crude oil to concentrate in the middle, and the flow rate gradually increases. The inclined plane of the rotating disk 314 cooperates with the blades 313 to further accelerate the flow of the crude oil, and finally outputs it at high pressure through the discharge pipe 306. The protection pipe 305 is connected by the connecting block 307, the fixing block 309 and the second screw 315 to form an expandable modular structure. If the blade 313 is damaged, it is only necessary to disassemble the connecting support rod 302 and the insert plate 304 of the corresponding protection pipe 305, without disassembling the pump body as a whole, which greatly shortens the maintenance time;

[0059] Finally, the first blocking ring 312 and the second blocking ring 316 arranged in the silo 318 form a "two-way convergence" flow channel, which improves the flow efficiency by restricting the crude oil from flowing to the middle area. The linkage design of the rotating plate 310 and the blade 313 uses the inclined plane of the rotating disk 314 to offset the fluid impact and reduce the impact of vibration on the equipment. The components such as the locking rod 112, the plug-in rod 211, and the connecting block 307 can achieve rapid disassembly and assembly, support local maintenance, and avoid repeated disassembly and assembly of the entire pump body. The spiral blade 213 works together with the separation pore funnel 208, combined with the gas collection frame 209 for directional exhaust, to reduce the risk of cavitation. The blocking ring cooperates with the rotating disk 314 to gradually increase the crude oil flow rate and ensure high-pressure stable output. The spring 215 and the lifting ring plate 216 are linked to seal, and the conical rubber pad 102 has a double sealing design to improve equipment reliability.

[0060] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A submersible centrifugal pump with integrated motor and pump, characterized in that: The submersible centrifugal pump comprises: A main unit (100) comprises a base (101), a rotating shaft (117), and a protective shell (103) fixedly connected to the upper surface of the base (101), a snap-fitting rod (112) inserted into the lower outer surface of the protective shell (103), one end of the snap-fitting rod (112) fixedly connected to a conical rubber pad (102), and a load-bearing ring plate (104) fixedly connected to the upper outer surface of the protective shell (103); A separation and loading unit (200) comprises a first support rod (202) fixedly connected to the upper surface of a load-bearing ring plate (104) and a lower conical funnel (201) snap-fitted to the upper surface of a protective housing (103); an upper conical funnel (205) is snap-fitted to the upper surface of the lower conical funnel (201) via a connecting tube (207); an auxiliary mounting ring (212) is fixedly connected to the outer surface of the connecting tube (207); the first support rod (202) An insertion rod (211) is inserted inside, and the insertion rod (211) is fixedly connected to the second support rod (204) at one end away from the first support rod (202), and the upper surface of the second support rod (204) is fixedly connected to the support ring plate (206). A first screw rod (203) is connected through one side of the first support rod (202) and the insertion rod (211), and one end of the first screw rod (203) is threadedly connected to the outer surface of the auxiliary mounting ring (212). The support ring plate (206) is fixedly connected to the outer surface of the feeding tube (301). A separation pore funnel (208) is fixedly connected to the outer surface of the rotating shaft (117), and a spiral sheet (213) is fixedly connected to the outer surface of the separation pore funnel (208). A partition plate (214) is rotatably connected to the upper surface of the separation pore funnel (208), and the outer side of the partition plate (214) is fixedly connected to the inner surface of the feeding tube (301). The partition plate (214) A trapezoidal groove is provided on the lower surface, and a lifting ring plate (216) is slidably connected in the trapezoidal groove; a spring (215) is fixedly connected to the lower surface of the lifting ring plate (216); the lower surface of the spring (215) is fixedly connected to the upper surface of the partition plate (214); a gas collection frame (209) is fixedly connected to the upper surface of the partition plate (214); a gas guide pipe (217) is fixedly connected to the outer surface of the gas collection frame (209); and a gas separation groove (210) is provided in the feeding pipe (301); The rotating material guiding unit (300) comprises an upper conical funnel (205) having a feeding tube (301) fixedly connected to the upper surface thereof and a protective tube (305) fixedly connected to the upper surface of the feeding tube (301); the outer surface of the protective tube (305) having a plurality of circumferentially distributed connecting blocks (307) fixedly connected thereto; the number of the protective tubes (305) is a plurality, and the plurality of protective tubes (305) are equidistantly engaged with each other; and the outer surface of the protective tube (305) having a fixing block (309) fixedly connected thereto.

2. The submersible centrifugal pump with integrated motor and pump according to claim 1, characterized in that: An embedded block (105) is fixedly connected inside the base (101), a feed filter plate (106) is fixedly connected to one side of the embedded block (105), the feed filter plate (106) is snap-connected to the inner surface of the base (101), a snap-connected housing (111) is fixedly connected to the inner surface of the protective shell (103), a stator (108) is fixedly connected inside the snap-connected housing (111), a central axis rod (110) is rotatably connected inside the snap-connected housing (111), and a rotor (109) is fixedly connected to the outer surface of the central axis rod (110).

3. The submersible centrifugal pump with integrated motor and pump according to claim 2, characterized in that: A sealing cover plate (116) is fixedly connected to the upper surface of the locking housing (111), a rotating shaft (117) is fixedly connected to the upper surface of the central axis rod (110), and one end of the rotating shaft (117) passes through one side of the sealing cover plate (116), a feed groove (107) is provided in the base (101), connecting grooves (113) are provided on both sides of the conical rubber pad (102), bolts (114) are provided in the connecting grooves (113), and a fixing ring rod (115) is fixedly connected to the lower surface of the sealing cover plate (116).

4. The submersible centrifugal pump with integrated motor and pump according to claim 1, characterized in that: A material bin (318) is fixedly connected to the feeding pipe (301) and the protection pipe (305); a first blocking ring (312) and a second blocking ring (316) are fixedly connected to the inner surface of the material bin (318); a rotating plate (310) is rotatably connected to the first blocking ring (312) and the second blocking ring (316); and a blade (313) is fixedly connected to the upper surface of the rotating plate (310).

5. The submersible centrifugal pump with integrated motor and pump according to claim 4, characterized in that: A connecting rod (302) is fixedly connected to the upper surface of the second support rod (204), one end of the connecting rod (302) passes through the upper surface of the supporting ring plate (206), the upper surface of the connecting rod (302) is inserted and connected to the lower surface of the fixed block (309), and the lower surface of the connecting block (307) is fixedly connected to an insertion plate (304), one side of the insertion plate (304) and one side of the fixed block (309) are fixedly connected by a second screw rod (315), and the other side of the blade (313) is fixedly connected to a rotating disk (314).

6. The submersible centrifugal pump with integrated motor and pump according to claim 5, characterized in that: The outer side of the rotating disk (314) is an inclined plane. A stop plate (317) is provided on the side of the rotating disk (314) away from the blades (313). The feed pipe (301) and the protective pipe (305) are both fixedly connected to a guide pipe (303) on one side. A discharge pipe (306) is fixedly connected to the outer surface of one group of the protective pipes (305). A traction rope cover plate (308) is fixedly connected to the upper surface of the protective pipe (305). One end of the air guide pipe (217) is fixedly connected to an exhaust pipe (311). The upper surface of the exhaust pipe (311) passes through the traction rope cover plate (308).

7. The submersible centrifugal pump with integrated motor and pump according to claim 6, characterized in that: The center position of the partition plate (214) is a grid structure, one side of the outer surface of the upper conical funnel (205) is fixedly connected to an oil inlet pipe, the lower surface of the through-traction rope cover plate (308) is fixedly connected to an insertion plate (304), and a circular groove is provided at the center of the rotating plate (310). The first blocking ring (312) and the second blocking ring (316) have the same structure, and the first blocking ring (312) and the second blocking ring (316) are symmetrically distributed.

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