A centrifugal multi-stage energy-saving mud pump for oil extraction

Abstract

The present invention relates to the technical field of rotary centrifugal pumps, and discloses a centrifugal multi-stage energy-saving mud pump for oil extraction, comprising a mounting plate, a first fixed centrifugal pump housing being provided on the upper side of the mounting plate, a rotating impeller being provided inside the first centrifugal pump housing, a second guide box being fixedly installed at one end of the first centrifugal pump housing, a first guide box being fixedly installed at the end of the first centrifugal pump housing away from the second guide box, and a connecting barrel being fixedly installed at the end of the first guide box away from the first centrifugal pump housing. In the present invention, the rotating blades are driven to rotate by a rotating ring, and during the rotation process, the rotating blades draw gas from the position of a fifth connecting pipe into the interior of the connecting barrel and then inject it into the interior of the first mounting pipe through the second mounting pipe. The high-speed gas flows inside the first mounting pipe to drive the movement speed of the fluid, thereby accelerating the extraction speed and improving the extraction efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of rotary centrifugal pumps, in particular to a centrifugal multi-stage energy-saving mud pump used for oil extraction. Background Art

[0002] Oil extraction is the construction of a complete process technology for oil and gas collection, separation, processing, metering, storage and transportation in the oil field, so that the mixed fluids such as oil, gas and water extracted from the oil well can be separated and preliminarily processed to obtain as much oil and gas products as possible. The water can be reinjected or utilized to prevent environmental pollution.

[0003] During the mining process, when the mined oil contains a large amount of asphaltene, wax or high-viscosity components, the oil may exhibit non-Newtonian fluid properties and certain elastic behavior. The viscous liquid flows slowly during the mining process and the mining efficiency is low. The existing multi-stage mud pumps often use multiple impellers at the same time when in use. When mining some oil mines with less mud, such a high-power mud pump is not needed. High-power mud pumps often cause waste of electricity when in use and have poor applicability to the use environment. For this reason, we propose a centrifugal multi-stage energy-saving mud pump for oil mining. Summary of the Invention

[0004] The present invention mainly solves the technical problems existing in the above-mentioned prior art and provides a centrifugal multi-stage energy-saving mud pump for oil production.

[0005] In order to achieve the above-mentioned object, the present invention adopts the following technical scheme: a centrifugal multi-stage energy-saving mud pump for oil extraction, comprising a mounting plate, a fixed first centrifugal pump housing is provided on the upper side of the mounting plate, a rotating impeller is provided inside the first centrifugal pump housing, a second guide box is fixedly installed on one end of the first centrifugal pump housing, the first guide box is fixedly installed on the end of the first centrifugal pump housing away from the second guide box, a connecting barrel is fixedly installed on the end of the first guide box away from the first centrifugal pump housing, a second centrifugal pump housing is fixedly installed on the end of the connecting barrel away from the first guide box, a rotating impeller is provided inside the second centrifugal pump housing, a third guide box is fixedly installed on the side of the second centrifugal pump housing away from the connecting barrel, a fifth connecting pipe is fixedly installed on the side of the third guide box, a fourth connecting pipe and a third connecting pipe are fixedly installed on the side of the connecting barrel, the second connecting pipe is fixedly installed on the side of the first guide box, the first connecting pipe is fixedly installed on the side of the second guide box, a detachable first mounting pipe is installed on the end surface of the second connecting pipe, a detachable third mounting pipe is installed on the end surface of the fourth connecting pipe, and a fourth mounting pipe is fixedly installed on the end corresponding to the first mounting pipe The cam is fixedly mounted on one end of the first mounting tube, and the cam is fixedly mounted on one end of the third connecting tube. The cam is extended to the inside of the first mounting tube away from the end of the third connecting tube. A rotating column is provided inside the second guide box, the first centrifugal pump housing, the first guide box and the connecting barrel. A rotating ring is provided inside the mounting block. The rotating column passes through the interior of the rotating ring. A third guide block that rotates with the rotating column is movably mounted on the outside of the rotating column. A fourth guide block is fixedly mounted on one end of the rotating ring corresponding to the third guide block. A rotating ring away from the fourth guide block is provided on one end of the rotating ring. A rotating blade is fixedly installed at the end, a first guide block is fixedly installed on the end face of the rotating column, a movable adapter column is arranged inside the third guide box, the second centrifugal pump casing and the connecting barrel, one end of the adapter column is fixedly installed with a connecting shaft, and the end of the adapter column away from the connecting shaft is fixedly installed with a second guide block, the interior of the second mounting tube is provided with a first solenoid valve, the interior of the fourth mounting tube is provided with a third solenoid valve, and the interior of the fifth mounting tube is provided with a second solenoid valve, the rotating column is fixedly connected to the impeller inside the first centrifugal pump casing, and the adapter column is movably and slidingly connected to the impeller inside the second centrifugal pump casing.

[0006] Preferably, the first mounting tube, the fourth mounting tube and the third mounting tube are combined into a "U"-shaped structure, the second mounting tube is a "V"-shaped pipe, one end of the second mounting tube extends into the interior of the first mounting tube and is fixedly installed with the sixth mounting tube, and the direction of the sixth mounting tube is parallel to the direction of the first mounting tube.

[0007] Preferably, a mounting bracket is fixedly mounted on the upper side of the mounting plate, a first rotating motor is fixedly mounted on the upper side of the mounting bracket, and an output end of the first rotating motor is fixedly connected to the end face of the rotating column.

[0008] Preferably, a mounting block is fixedly installed on the upper side of the mounting plate, a first expander is fixedly installed inside the mounting block, a fixed column is fixedly installed on the output end of the first expander, a coupling is fixedly installed on one end of the fixed column, and one end of the coupling is movably connected to one end of the connecting shaft.

[0009] Preferably, two symmetrically distributed connecting rods are fixedly installed on the inner side of the connecting barrel, a constraint groove is provided on the outer side of the rotating ring, and a fourth mounting ring is fixedly installed on the position of the constraint groove on the corresponding side of the two connecting rods, and the fourth mounting ring is rotatably installed inside the constraint groove.

[0010] Preferably, a first installation cavity is provided inside the rotating column corresponding to the outer side of the second guide box, and a second installation cavity is provided inside the rotating column corresponding to the inner side of the connecting barrel. A movable cavity is provided at one end corresponding to the first installation cavity and the second installation cavity, and a movable rod is movably installed inside the movable cavity. A first sliding groove is provided on the side of the rotating column corresponding to the position of the first installation cavity, and a sliding block is fixedly installed on the end surface of the movable rod corresponding to the position of the first sliding groove. The sliding block is slidably installed inside the first sliding groove, and a second sliding groove is provided on the outer side of the rotating column corresponding to the position of the second installation cavity. A first connecting block is fixedly installed on one end of the movable rod corresponding to the inner side of the second installation cavity, and the first connecting block passes through the second sliding groove and is fixedly installed on the inner side of the third guide block.

[0011] Preferably, a third mounting cavity is provided on the side of the mounting frame, a fixed second retractor is provided inside the third mounting cavity, a second connecting block is fixedly installed on the output end of the second retractor, a fifth mounting ring is fixedly installed on the upper end of the second connecting block, an adapter ring is provided on the inner side of the fifth mounting ring, and the sliding block is movably installed inside the adapter ring.

[0012] Preferably, a second mounting ring is fixedly mounted on the outer side of the mounting block. The second mounting ring is a circular ring. Two second supporting legs are symmetrically fixedly mounted on the side of the second mounting ring. The end of the second supporting leg away from the second mounting ring is fixedly mounted on the upper side of the mounting plate.

[0013] Preferably, a first mounting ring is fixedly installed on the outer side of the second guide box, and two first supporting legs are symmetrically fixedly installed on the side of the first mounting ring, and one end of the first supporting leg away from the first mounting ring is fixedly installed on the upper side of the mounting plate, and a third mounting ring is fixedly installed on the outer side of the third guide box, and two third supporting legs are symmetrically fixedly installed on the side of the third mounting ring, and one end of the third supporting leg away from the third mounting ring is fixedly installed on the upper side of the mounting plate.

[0014] Preferably, the third guide block, the fourth guide block, the first guide block and the second guide block are circular rings and arc grooves are formed on the outer sides at equal distances around the circumference. Beneficial effects

[0015] The present invention provides a centrifugal multi-stage energy-saving mud pump for oil production. It has the following beneficial effects:

[0016] (1) The centrifugal multi-stage energy-saving mud pump used for oil extraction, when the extracted oil contains a large amount of asphaltene, wax or high-viscosity components, the oil may show non-Newtonian fluid characteristics and certain elastic behavior. The viscosity of this fluid is large. During the extraction process, the first solenoid valve and the second solenoid valve are opened, the third solenoid valve is closed, and then the flywheel inside the first centrifugal pump housing is started to rotate, so that the fluid can flow from the fifth installation pipe into the interior of the first installation pipe, and the rotating ring drives the rotating blades to rotate. During the rotation process, the rotating blades suck the gas from the position of the fifth connecting pipe into the interior of the connecting barrel and then inject it into the interior of the first installation pipe through the second installation pipe. The high-speed gas flows inside the first installation pipe to drive the movement speed of the fluid, accelerate the extraction speed, and improve the extraction efficiency.

[0017] (2) The centrifugal multi-stage energy-saving mud pump for oil extraction can open only the second solenoid valve and close the first and third solenoid valves when extracting some oil with normal viscosity. The flywheel inside the first centrifugal pump housing rotates to guide the oil to the inside of the first centrifugal pump housing through the fifth installation pipe for extraction. When it is necessary to increase the extraction speed, the first and second solenoid valves are closed and the third solenoid valve is opened. The liquid is adsorbed through the fifth connecting pipe and then discharged through the first connecting pipe. When in use, the flywheel inside the first centrifugal pump housing and the second centrifugal pump housing rotates to achieve multi-stage acceleration to adapt to different extraction environments. In a simple environment, it is only necessary to open the second solenoid valve and close the first and third solenoid valves to realize the extraction function, thereby saving energy.

[0018] (3) The centrifugal multi-stage energy-saving mud pump for oil extraction supports the connecting barrel by means of a second mounting ring and a second supporting leg arranged on the outside of the connecting barrel, supports the second guide box by means of a first mounting ring and a first supporting leg arranged on the outside of the second guide box, and supports the third guide box by means of a third mounting ring and a third mounting ring arranged on the outside of the third guide box, thereby improving stability during movement.

[0019] (4) When cleaning the interior of the centrifugal multi-stage energy-saving mud pump used for oil extraction, it is only necessary to close the second solenoid valve, and inject the cleaning liquid through the first connecting pipe, so that the impellers inside the first centrifugal pump housing and the second centrifugal pump housing rotate in the direction, and then the rotating blades rotate in the opposite direction, so that the internal cleaning liquid can flow through the interior of the entire device to flush the inner wall of the device, making it easy to clean. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely illustrative, and those skilled in the art can derive other implementation drawings based on the provided drawings without inventive effort.

[0021] The structures, proportions, sizes, etc. illustrated in this specification are intended solely to complement the contents disclosed herein and to facilitate understanding and reading by persons skilled in the art. They are not intended to limit the conditions under which the present invention may be implemented and therefore have no substantive technical significance. Any structural modifications, changes in proportions, or adjustments in sizes, without affecting the efficacy and objectives of the present invention, shall remain within the scope of the technical contents disclosed herein.

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 Schematic diagram of the partial structure of the sixth mounting tube of the present invention;

[0024] Figure 3 It is a schematic diagram of the partial structure of the rotating column of the present invention;

[0025] Figure 4 is a cross-sectional view of the rotating column of the present invention;

[0026] Figure 5 For the present invention Figure 4 A in the middle is an enlarged structural diagram;

[0027] Figure 6 For the present invention Figure 4 Enlarged structural diagram at point B in the middle.

[0028] Legend:

[0029] 1. Mounting plate; 211. First centrifugal pump housing; 212. First guide box; 213. Second guide box; 214. Connecting barrel; 215. Second centrifugal pump housing; 216. Third guide box; 217. First connecting pipe; 218. Second connecting pipe; 219. Third connecting pipe; 2110. Fourth connecting pipe; 2111. Fifth connecting pipe; 231. First mounting ring; 232. First support leg; 233. Second mounting ring; 234. Second support leg; 235. Third mounting ring; 236. Third support leg; 241. First mounting pipe; 242. Second mounting pipe; 243. Third mounting pipe; 244. Fourth mounting pipe; 245. Fifth mounting pipe; 246. First solenoid valve; 247. Second solenoid valve; 248. Third solenoid valve; 249. Sixth mounting pipe; 311. First Rotating motor; 312, rotating column; 313, first guide block; 314, mounting block; 315, first telescope; 316, fixed column; 317, coupling; 318, connecting shaft; 319, adapter column; 3110, second guide block; 321, third guide block; 322, rotating ring; 323, fourth guide block; 324, rotating blade; 331, connecting rod; 332, constraint groove; 333, fourth mounting ring; 341, first mounting cavity; 342, movable cavity; 343, second mounting cavity; 344, first slide groove; 345, second slide groove; 346, movable rod; 347, sliding block; 348, first connecting block; 351, second telescope; 352, second connecting block; 353, fifth mounting ring; 354, adapter ring; 361, mounting bracket; 362, third mounting cavity. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] like Figures 1-6As shown, a centrifugal multi-stage energy-saving mud pump for oil extraction includes a mounting plate 1, a first centrifugal pump housing 211 is fixedly provided on the upper side of the mounting plate 1, a rotating impeller is provided inside the first centrifugal pump housing 211, a second guide box 213 is fixedly installed at one end of the first centrifugal pump housing 211, a first guide box 212 is fixedly installed at one end of the first centrifugal pump housing 211 away from the second guide box 213, a connecting barrel 214 is fixedly installed at one end of the first guide box 212 away from the first centrifugal pump housing 211, a second centrifugal pump housing 215 is fixedly installed at one end of the connecting barrel 214 away from the first guide box 212, a rotating impeller is provided inside the second centrifugal pump housing 215, and the second centrifugal pump housing 215 is away from the connecting barrel 214. A third guide box 216 is fixedly installed on one end of the barrel 214, a fifth connecting tube 2111 is fixedly installed on the side of the third guide box 216, a fourth connecting tube 2110 and a third connecting tube 219 are fixedly installed on the side of the connecting barrel 214, a second connecting tube 218 is fixedly installed on the side of the first guide box 212, a first connecting tube 217 is fixedly installed on the side of the second guide box 213, a detachable first mounting tube 241 is installed on the end surface of the second connecting tube 218, a detachable third mounting tube 243 is installed on the end surface of the fourth connecting tube 2110, a fourth mounting tube 244 is fixedly installed on one end of the third mounting tube 243 corresponding to the first mounting tube 241, and a fifth mounting tube 245 is fixedly installed on one end of the first mounting tube 241. A second mounting tube 242 is fixedly mounted on one end of the third connecting tube 219, and the second mounting tube 242 extends to the interior of the first mounting tube 241 away from the end of the third connecting tube 219. A rotating rotating column 312 is provided inside the second guide box 213, the first centrifugal pump housing 211, the first guide box 212 and the connecting barrel 214. A rotating rotating ring 322 is provided inside the mounting block 314. The rotating column 312 passes through the interior of the rotating ring 322. A third guide block 321 is movably mounted on the outer side of the rotating column 312 so as to rotate with the rotating column 312. A fourth guide block 323 is fixedly mounted on one end of the rotating ring 322 corresponding to the third guide block 321, and a rotating blade 330 is fixedly mounted on the end of the rotating ring 322 away from the fourth guide block 323. 24. A first guide block 313 is fixedly installed on the end surface of the rotating column 312. A movable adapter column 319 is provided inside the third guide box 216, the second centrifugal pump housing 215, and the connecting barrel 214. A connecting shaft 318 is fixedly installed on one end of the adapter column 319, and a second guide block 3110 is fixedly installed on the end of the adapter column 319 away from the connecting shaft 318. A first solenoid valve 246 is provided inside the second mounting tube 242, a third solenoid valve 248 is provided inside the fourth mounting tube 244, and a second solenoid valve 247 is provided inside the fifth mounting tube 245. The rotating column 312 is fixedly connected to the impeller inside the first centrifugal pump housing 211, and the adapter column 319 is movably and slidably connected to the impeller inside the second centrifugal pump housing 215.When the extracted oil contains a large amount of asphaltene, wax or high-viscosity components, the oil may exhibit non-Newtonian fluid characteristics and certain elastic behavior. During the collection process, first connect the fifth installation pipe 245 with the oil inlet, close the third solenoid valve 248, keep the second solenoid valve 247 and the first solenoid valve 246 open, so that the impeller inside the first centrifugal pump housing 211 rotates, and the suction generated by the impeller sucks the viscous oil into the fifth installation pipe 245. Move the third guide block 321 so that the third guide block 321 is docked with the fourth guide block 323. The rotating rotating column 312 drives the rotating ring 322 to rotate, and the rotating ring 322 drives the rotating blades 324 to rotate. The rotating blades 324 make the gas The oil flows through the fifth connecting pipe 2111, the third guide box 216, and the second centrifugal pump housing 215 to the interior of the connecting barrel 214, and then through the third connecting pipe 219 and the second mounting pipe 242 to the interior of the first mounting pipe 241. The high-speed airflow mixes with the viscous oil to accelerate the flow of the oil and improve the collection efficiency. During normal use, the second solenoid valve 247 and the first solenoid valve 246 are closed, and the third solenoid valve 248 is in the open state. The adapter column 319 is moved so that the adapter column 319 drives the second guide block 3110 to dock with the first guide block 313. The third guide block 321 and the fourth guide block 323 are in a separated state. The rotating rotating column 312 drives the adapter column 319 to rotate. The adapter column 319 drives the impeller inside the second centrifugal pump housing 215 to rotate, and the oil enters the interior of the third guide box 216 through the fifth connecting pipe 2111, and then passes through the second centrifugal pump housing 215, the connecting barrel 214, the fourth connecting pipe 2110, the third installation pipe 243, the fourth installation pipe 244, the first installation pipe 241, the second connecting pipe 218, the first guide box 212, the first centrifugal pump housing 211 and the second guide box 213 in sequence and is discharged through the first connecting pipe 217. When it is necessary to flush the internal oil, the second solenoid valve 247 is closed and the first solenoid valve 246 and the third solenoid valve 248 are opened. The cleaning liquid is injected through the first connecting pipe 217, and the rotating column 312 is rotated in the opposite direction to clean the oil. The washing liquid moves to the inside of the first installation tube 241 along with the second guide box 213, the first centrifugal pump housing 211, the first guide box 212, and the second connecting pipe 218. The cleaning liquid inside the first installation tube 241 moves to the inside of the connecting barrel 214 through the fourth installation tube 244, the third installation tube 243 and the fourth connecting pipe 2110. The cleaning liquid inside the first installation tube 241 moves to the inside of the connecting barrel 214 through the second installation tube 242. The counter-rotating rotating blades 324 drive the cleaning liquid to move out through the second centrifugal pump housing 215, the second centrifugal pump housing 215 and the fifth connecting pipe 2111. The first installation tube 241, the fourth installation tube 244 and the third installation tube 243 are combined into a "U"-shaped structure.The second installation pipe 242 is a V-shaped pipe. One end of the second installation pipe 242 extends into the interior of the first installation pipe 241 and is fixedly mounted with a sixth installation pipe 249. The direction of the sixth installation pipe 249 is parallel to the direction of the first installation pipe 241. The airflow from the sixth installation pipe 249 and the oil flowing in the first installation pipe 241 are in the same direction, thereby preventing collision between the airflow and the oil and improving oil transportation efficiency.

[0032] A mounting bracket 361 is fixedly mounted on the upper side of the mounting plate 1, and a first rotating motor 311 is fixedly mounted on the upper side of the mounting bracket 361. The output end of the first rotating motor 311 is fixedly connected to the end face of the rotating column 312. When the first rotating motor 311 is started, the first rotating motor 311 drives the rotating column 312 to rotate, and the rotating column 312 drives the impeller inside the first centrifugal pump housing 211 to rotate. A mounting block 314 is fixedly mounted on the upper side of the mounting plate 1, and a first retractor 315 is fixedly mounted inside the mounting block 314. A fixing column 316 is fixedly mounted on the output end of the first retractor 315, and a coupling 31 is fixedly mounted on one end of the fixing column 316. 7. One end of the coupling 317 is movably connected to one end of the connecting shaft 318. The connecting shaft 318 rotates through the coupling 317 to start the first telescopic device 315. The first telescopic device 315 drives the fixed column 316, the coupling 317, the connecting shaft 318, the adapter column 319 and the second guide block 3110 to move. Two symmetrically distributed connecting rods 331 are fixedly installed on the inner side of the connecting barrel 214. A constraint groove 332 is opened on the outer side of the rotating ring 322. A fourth mounting ring 333 is fixedly installed on the corresponding side of the two connecting rods 331 at the position corresponding to the constraint groove 332. The fourth mounting ring 333 is rotatably installed inside the constraint groove 332. The rotating ring 322 is rotatably mounted inside the connecting barrel 214 through the connecting rod 331, the constraint groove 332 and the fourth mounting ring 333. The interior of the rotating column 312 is provided with a first mounting cavity 341 corresponding to the outer side of the second guide box 213. The interior of the rotating column 312 corresponds to the second mounting cavity 343 inside the connecting barrel 214. A movable cavity 342 is provided at one end corresponding to the first mounting cavity 341 and the second mounting cavity 343. A movable rod 346 is movably installed inside the movable cavity 342. A first sliding groove 344 is provided on the side of the rotating column 312 corresponding to the position of the first mounting cavity 341. The end surface of the movable rod 346 corresponds to the first sliding groove 344. The sliding block 347 is fixedly installed at the position of the first guide groove 344, and the sliding block 347 is slidably installed in the inside of the first guide groove 344. The second guide groove 345 is opened at the position of the outer side of the rotating column 312 corresponding to the second installation cavity 343. The first connecting block 348 is fixedly installed at one end of the movable rod 346 corresponding to the inside of the second installation cavity 343. The first connecting block 348 passes through the second guide groove 345 and is fixedly installed on the inner side of the third guide block 321. The movable rod 346 is moved, and the movable rod 346 drives the first connecting block 348 to move. The first connecting block 348 drives the third guide block 321 to move, and the moved third guide block 321 can be docked with the fourth guide block 323.

[0033] A third mounting cavity 362 is provided on the side of the mounting frame 361, and a fixed second retractor 351 is provided inside the third mounting cavity 362. A second connecting block 352 is fixedly installed on the output end of the second retractor 351, and a fifth mounting ring 353 is fixedly installed on the upper end of the second connecting block 352. An adaptor ring 354 is provided on the inner side of the fifth mounting ring 353, and a sliding block 347 is movably installed inside the adaptor ring 354. The second connecting block 352 is moved laterally by the second retractor 351, and the second connecting block 352 drives the fifth mounting ring 353 and the sliding block 347 to move laterally. The sliding block 347 can rotate inside the adaptor ring 354, and a second mounting ring 233 is fixedly installed on the outer side of the mounting block 314. The second mounting ring 233 is a circular ring, and two second supporting legs 234 are symmetrically fixedly installed on the side of the second mounting ring 233. The second supporting legs 234 are symmetrically fixedly installed on the side of the second mounting ring 234. One end away from the second mounting ring 233 is fixedly mounted on the upper side of the mounting plate 1. The connecting barrel 214 is supported by the second mounting ring 233 and two second supporting legs 234. A first mounting ring 231 is fixedly mounted on the outer side of the second guide box 213. Two first supporting legs 232 are symmetrically fixedly mounted on the side of the first mounting ring 231. The end of the first supporting leg 232 away from the first mounting ring 231 is fixedly mounted on the upper side of the mounting plate 1. A third mounting ring 235 is fixedly mounted on the outer side of the third guide box 216. Two third supporting legs 236 are symmetrically fixedly mounted on the side of the third mounting ring 235. The end of the third supporting leg 236 away from the third mounting ring 235 is fixedly mounted on the upper side of the mounting plate 1. The third guide block 321, the fourth guide block 323, the first guide block 313, and the second guide block 3110 are circular rings with arcuate grooves equidistantly formed on the outer sides.

[0034] Working principle of the present invention:

[0035] During use, when the extracted oil contains a large amount of asphaltene, wax or high-viscosity components, the oil may exhibit non-Newtonian fluid characteristics and certain elastic behavior. During the collection process, the fifth installation pipe 245 is first connected to the oil inlet, the third solenoid valve 248 is closed, the second solenoid valve 247 and the first solenoid valve 246 are kept open, and the impeller inside the first centrifugal pump housing 211 is rotated. The suction generated by the impeller sucks the viscous oil into the inside of the fifth installation pipe 245, and the third guide block 321 is moved so that the third guide block 321 is docked with the fourth guide block 323. The rotating rotating column 312 drives the rotating ring 322 to rotate, and the rotating ring 322 drives the rotating blades 324 to rotate. The rotating blades 324 make the gas The oil flows through the fifth connecting pipe 2111, the third guide box 216 and the second centrifugal pump housing 215 to the interior of the connecting barrel 214, and then moves to the interior of the first mounting pipe 241 through the third connecting pipe 219 and the second mounting pipe 242. The high-speed airflow mixes with the viscous oil to accelerate the flow of the oil and improve the collection efficiency. During normal use, the second solenoid valve 247 and the first solenoid valve 246 are closed so that the third solenoid valve 248 is in the open state. The adapter column 319 is moved so that the adapter column 319 drives the second guide block 3110 to dock with the first guide block 313. The third guide block 321 and the fourth guide block 323 are in a separated state. The rotating rotating column 312 drives the adapter column 319 to rotate. The adapter column 319 The impeller inside the second centrifugal pump housing 215 is driven to rotate, and the oil enters the interior of the third guide box 216 through the fifth connecting pipe 2111, and then passes through the second centrifugal pump housing 215, the connecting barrel 214, the fourth connecting pipe 2110, the third installation pipe 243, the fourth installation pipe 244, the first installation pipe 241, the second connecting pipe 218, the first guide box 212, the first centrifugal pump housing 211 and the second guide box 213 through the first connecting pipe 217. When it is necessary to flush the internal oil, the second solenoid valve 247 is closed and the first solenoid valve 246 and the third solenoid valve 248 are opened. The cleaning liquid is injected through the first connecting pipe 217, and the rotating column 312 rotates in the opposite direction. The cleaning liquid flows along with the second guide box 21 3. The first centrifugal pump housing 211, the first guide box 212, and the second connecting pipe 218 move into the interior of the first mounting pipe 241. The cleaning liquid in the first mounting pipe 241 moves into the interior of the connecting barrel 214 through the fourth mounting pipe 244, the third mounting pipe 243, and the fourth connecting pipe 2110. The cleaning liquid in the first mounting pipe 241 moves into the interior of the connecting barrel 214 through the second mounting pipe 242. The counter-rotating rotating blades 324 drive the cleaning liquid to move out through the second centrifugal pump housing 215, the second centrifugal pump housing 215, and the fifth connecting pipe 2111. The airflow coming out of the sixth mounting pipe 249 is in the same direction as the oil flowing in the first mounting pipe 241, thereby avoiding collision between the airflow and the oil and improving the oil transportation efficiency.The first rotating motor 311 is started, and the first rotating motor 311 drives the rotating column 312 to rotate. The rotating column 312 drives the impeller inside the first centrifugal pump housing 211 to rotate. The connecting shaft 318 rotates through the coupling 317. The first retractor 315 is started, and the first retractor 315 drives the fixed column 316, the coupling 317, the connecting shaft 318, the adapter column 319 and the second guide block 3110 to move. The rotating ring 322 is installed inside the connecting barrel 214 through the restraint rotation of the connecting rod 331, the restraint groove 332 and the fourth mounting ring 333. The movable rod 346 is moved, which drives the first connecting block 348 to move. The first connecting block 348 drives the third guide block 321 to move. The moved third guide block 321 can dock with the fourth guide block 323. The second retractor 351 causes the second connecting block 352 to move laterally. The second connecting block 352 drives the fifth mounting ring 353 and the sliding block 347 to move laterally. The sliding block 347 can rotate inside the adapter ring 354. The connecting barrel 214 is supported by the second mounting ring 233 and the two second support legs 234.

[0036] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A centrifugal multi-stage energy-saving mud pump for oil production, comprising a mounting plate (1), wherein a first centrifugal pump housing (211) is fixedly provided on the upper side of the mounting plate (1), characterized in that: A second guide box (213) is fixedly mounted on one end of the first centrifugal pump housing (211), a first guide box (212) is fixedly mounted on one end of the first centrifugal pump housing (211) away from the second guide box (213), a connecting barrel (214) is fixedly mounted on one end of the first guide box (212) away from the first centrifugal pump housing (211), a second centrifugal pump housing (215) is fixedly mounted on one end of the connecting barrel (214) away from the first guide box (212), a third guide box (216) is fixedly mounted on one end of the second centrifugal pump housing (215) away from the connecting barrel (214), and a fifth connecting pipe (216) is fixedly mounted on the side of the third guide box (216). 111), a fourth connecting tube (2110) and a third connecting tube (219) are fixedly installed on the side of the connecting barrel (214), a second connecting tube (218) is fixedly installed on the side of the first guide box (212), a first connecting tube (217) is fixedly installed on the side of the second guide box (213), a detachable first mounting tube (241) is installed on the end surface of the second connecting tube (218), a detachable third mounting tube (243) is installed on the end surface of the fourth connecting tube (2110), a fourth mounting tube (244) is fixedly installed on one end of the third mounting tube (243) corresponding to the first mounting tube (241), and one end of the first mounting tube (241) is fixedly installed A fifth mounting tube (245) is provided, one end of the third connecting tube (219) is fixedly mounted with a second mounting tube (242), one end of the second mounting tube (242) is away from the third connecting tube (219) and extends to the interior of the first mounting tube (241), a rotating column (312) is provided inside the second guide box (213), the first centrifugal pump housing (211), the first guide box (212) and the connecting barrel (214), a rotating rotating column (312) is provided inside the mounting block (314), a rotating rotating ring (322) is provided inside the rotating column (312), the rotating column (312) passes through the interior of the rotating ring (322), and a third guide that rotates with the rotating column (312) is movably mounted on the outer side of the rotating column (312). The third guide block (321) is fixedly mounted on one end of the rotating ring (322) corresponding to the third guide block (321), and a fourth guide block (323) is fixedly mounted on one end of the rotating ring (322) away from the fourth guide block (323). A rotating blade (324) is fixedly mounted on the end surface of the rotating column (312). A movable adapter column (319) is provided inside the third guide box (216), the second centrifugal pump housing (215) and the connecting barrel (214). A connecting shaft (318) is fixedly mounted on one end of the adapter column (319), and a second guide block (3110) is fixedly mounted on one end of the adapter column (319) away from the connecting shaft (318). A first solenoid valve (246) is provided inside the second mounting tube (242), a third solenoid valve (248) is provided inside the fourth mounting tube (244), and a second solenoid valve (247) is provided inside the fifth mounting tube (245).

2. A centrifugal multi-stage energy-saving mud pump for oil production according to claim 1, characterized in that: A rotating impeller is provided inside the first centrifugal pump housing (211), and a rotating impeller is provided inside the second centrifugal pump housing (215). The rotating column (312) is fixedly connected to the impeller inside the first centrifugal pump housing (211), and the adapting column (319) is movably and slidingly connected to the impeller inside the second centrifugal pump housing (215). The first mounting tube (241), the fourth mounting tube (244), and the third mounting tube (243) are combined into a "U"-shaped structure. The second mounting tube (242) is a "V"-shaped pipe. One end of the second mounting tube (242) extends into the interior of the first mounting tube (241) and is fixedly installed with a sixth mounting tube (249). The direction of the sixth mounting tube (249) is parallel to the direction of the first mounting tube (241).

3. A centrifugal multi-stage energy-saving mud pump for oil production according to claim 2, characterized in that: A mounting frame (361) is fixedly mounted on the upper side of the mounting plate (1), a first rotating motor (311) is fixedly mounted on the upper side of the mounting frame (361), and an output end of the first rotating motor (311) is fixedly connected to an end surface of the rotating column (312).

4. A centrifugal multi-stage energy-saving mud pump for oil production according to claim 3, characterized in that: A mounting block (314) is fixedly mounted on the upper side of the mounting plate (1), a first retractor (315) is fixedly mounted inside the mounting block (314), a fixed column (316) is fixedly mounted on the output end of the first retractor (315), a coupling (317) is fixedly mounted on one end of the fixed column (316), and one end of the coupling (317) is movably connected to one end of the connecting shaft (318).

5. A centrifugal multi-stage energy-saving mud pump for oil production according to claim 4, characterized in that: Two symmetrically distributed connecting rods (331) are fixedly mounted on the inner side of the connecting barrel (214); a restraining groove (332) is provided on the outer side of the rotating ring (322); a fourth mounting ring (333) is fixedly mounted on one side of the two connecting rods (331) corresponding to the position of the restraining groove (332); and the fourth mounting ring (333) is rotatably mounted inside the restraining groove (332).

6. A centrifugal multi-stage energy-saving mud pump for oil production according to claim 5, characterized in that: The interior of the rotating column (312) is provided with a first installation cavity (341) corresponding to the outer side of the second guide box (213), the interior of the rotating column (312) is provided with a second installation cavity (343) corresponding to the interior of the connecting barrel (214), a movable cavity (342) is provided at one end corresponding to the first installation cavity (341) and the second installation cavity (343), a movable rod (346) is movably installed inside the movable cavity (342), a first sliding groove (344) is provided on the side of the rotating column (312) corresponding to the position of the first installation cavity (341), and a movable rod (346) is provided inside the movable cavity (342). A sliding block (347) is fixedly installed on the end surface of the rod (346) at a position corresponding to the first slide groove (344), and the sliding block (347) is slidably installed inside the first slide groove (344). A second slide groove (345) is opened on the outer side of the rotating column (312) at a position corresponding to the second installation cavity (343). A first connecting block (348) is fixedly installed on one end of the movable rod (346) corresponding to the inside of the second installation cavity (343). The first connecting block (348) passes through the second slide groove (345) and is fixedly installed on the inner side of the third guide block (321).

7. A centrifugal multi-stage energy-saving mud pump for oil production according to claim 6, characterized in that: A third mounting cavity (362) is provided on the side of the mounting frame (361), a second retractor (351) is fixedly provided inside the third mounting cavity (362), a second connecting block (352) is fixedly installed on the output end of the second retractor (351), a fifth mounting ring (353) is fixedly installed on the upper end of the second connecting block (352), an adaptor ring (354) is provided on the inner side of the fifth mounting ring (353), and a sliding block (347) is movably installed inside the adaptor ring (354).

8. A centrifugal multi-stage energy-saving mud pump for oil production according to claim 7, characterized in that: A second mounting ring (233) is fixedly mounted on the outer side of the mounting block (314); the second mounting ring (233) is a circular ring; two second supporting legs (234) are symmetrically fixedly mounted on the side of the second mounting ring (233); one end of the second supporting leg (234) away from the second mounting ring (233) is fixedly mounted on the upper side of the mounting plate (1).

9. A centrifugal multi-stage energy-saving mud pump for oil production according to claim 8, characterized in that: A first mounting ring (231) is fixedly mounted on the outer side of the second guide box (213), two first supporting legs (232) are symmetrically fixedly mounted on the side of the first mounting ring (231), and one end of the first supporting leg (232) away from the first mounting ring (231) is fixedly mounted on the upper side of the mounting plate (1). A third mounting ring (235) is fixedly mounted on the outer side of the third guide box (216), two third supporting legs (236) are symmetrically fixedly mounted on the side of the third mounting ring (235), and one end of the third supporting leg (236) away from the third mounting ring (235) is fixedly mounted on the upper side of the mounting plate (1).

10. A centrifugal multi-stage energy-saving mud pump for oil production according to claim 9, characterized in that: The third guide block (321), the fourth guide block (323), the first guide block (313) and the second guide block (3110) are circular rings and have arc-shaped grooves formed on their outer sides at equal distances from the circumference.

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