CN103185025A - Centrifugal water pump with on-line adjustable vanes - Google Patents
Centrifugal water pump with on-line adjustable vanes Download PDFInfo
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- CN103185025A CN103185025A CN2013101209096A CN201310120909A CN103185025A CN 103185025 A CN103185025 A CN 103185025A CN 2013101209096 A CN2013101209096 A CN 2013101209096A CN 201310120909 A CN201310120909 A CN 201310120909A CN 103185025 A CN103185025 A CN 103185025A
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Abstract
The invention discloses a centrifugal water pump with on-line adjustable vanes. The centrifugal water pump comprises a vane wheel arranged in a pump body by a rotation shaft, wherein the vane wheel comprises a hub, a cover plate and a plurality of vanes arranged on the hub, each vane is divided into two parts, namely a fixed vane on the hub and a moving vane near a peripheral outlet of the vane wheel, each moving vane is hinged on the cover plate, a plurality of radial oil cylinder jacking devices respectively matched with the moving vanes are arranged on the rotation shaft, one end of the rotation shaft is provided with a pipeline and is communicated with the oil cylinder jacking devices, and the pipeline is communicated with an externally hydraulic system through a rotary joint by the end. The centrifugal water pump disclosed by the invention has the characteristics that by adjusting the outlet angle of each vane of the centrifugal pump in an on-line manner, the diameter of the vane wheel can be changed, and thus performance parameters of the water pump are changed, the flux and the head of delivery are improved or reduced, and the problem that the vane angle of the existing centrifugal pump can not be adjusted so as to change operating parameters is solved.
Description
Technical field
The invention belongs to water pump, be specifically related to the online adjustable centrifugal water pump of a kind of blade.
Background technique
Along with ambient temperature or the variation of producing load, the situation that required flow and pressure need change often appears producing in industrial and mining enterprise's circulation, and technical experts are researching and developing certain technology always, and hope can be satisfied this requirement.
Parameter adjustment in the centrifugal water pump running is the key issue of water pump operation always.Former, adopt valve regulated and motor speed-regulating ways such as (comprise and present speed governing etc. in speed reducer adjusting, Coupler speed governing, viscous coupling speed governing, the speed governing of motor pole logarithm, motor decompression speed, the motor) respectively, but the energy consumption of the valve regulated method in the above way is too big, the method of motor speed-regulating has floor space big, the cost height, shortcomings such as rate of fault height.
Present industrial technology is at axial-flow pump, and mixed flow pump has direct adjustment impeller angle to reach the technology that changes pump group Operational Limits.Because the structural feature of centrifugal pump, present domestic and international pump industry does not all have a kind of centrifugal pump by adjusting the technology that blade angle changes Operational Limits always.
Summary of the invention
The objective of the invention is the deficiency that exists at prior art, provide a kind of and can adjust blade angle immediately and change the online adjustable centrifugal water pump of blade of Operational Limits.
Technological scheme of the present invention is achieved in that
The online adjustable centrifugal water pump of blade comprises by rotating shaft being located at impeller in the pump housing that impeller comprises wheel hub, is located at cover plate and some blades on the wheel hub; Each blade is divided into two-part, comprises the stator blade on the wheel hub and the moving vane that exports near impeller outer edge, and moving vane is on the cover board hinged; Described rotating shaft is provided with some oil cylinder jacking apparatus radially and matches with described moving vane respectively, and described rotating shaft is provided with pipeline from an end and is communicated with described oil cylinder jacking apparatus, and this end makes pipeline be communicated with external hydraulic system by swivel joint.
Described oil cylinder jacking apparatus comprises the oil cylinder that radially is located in the rotating shaft and piston, the push rod that is connected with piston, described piston is connected with push rod by spring, described push rod matches with the bottom of described moving vane, and corresponding each moving vane is provided with position limit pin on the described cover plate.
Described wheel hub is provided with the guiding groove that cooperates with described push rod.
Second technological scheme of the present invention is: the online adjustable centrifugal water pump of blade comprises by rotating shaft being located at impeller in the pump housing that impeller comprises wheel hub, is located at cover plate and some blades on the wheel hub; Each blade is divided into two-part, comprises the stator blade on the wheel hub and is located at the spring leaf that the close impeller outer edge on the stator blade exports; Described rotating shaft is provided with corresponding with spring leaf respectively radially branch pipe(tube), and described rotating shaft is provided with axial main pipe from an end and is communicated with described branch pipe(tube); Being connected with wire rope corresponding branch pipe(tube) and main pipe in rotating shaft on the described spring leaf respectively is connected with rope tension unit outside the rotating shaft.
The 3rd technological scheme of the present invention is: the online adjustable centrifugal water pump of blade comprises by rotating shaft being located at impeller in the pump housing that impeller comprises wheel hub, is located at cover plate and some blades on the wheel hub; Each blade is divided into two-part, comprises the stator blade on the wheel hub and is located at the spring leaf that the close impeller outer edge on the stator blade exports; Described rotating shaft is provided with the rolling disc that rotates around the axis, radially be provided with airtight hydraulic space between rolling disc and the rotating shaft, rotating shaft is provided with the radially branch pipe(tube) that is communicated with hydraulic space, described rotating shaft is provided with axial main pipe from an end and is communicated with described branch pipe(tube), and this end makes main pipe be communicated with external hydraulic system by swivel joint; Being connected with wire rope on the described spring leaf respectively is connected with described rolling disc.
Described rolling disc comprises a hollow disk body, the biside plate of disk body and rotating shaft sealing, be provided with in the disk body one with the dividing plate of rotating shaft sealing, the rotating shaft in the disk body is provided with radially a baffle plate, forms described hydraulic space between the baffle plate in the disk body of rolling disc, dividing plate and the rotating shaft diametrically.
The 4th technological scheme of the present invention is: the online adjustable centrifugal water pump of blade comprises by rotating shaft being located at impeller in the pump housing that impeller comprises wheel hub, is located at cover plate and some blades on the wheel hub; Each blade is divided into two-part, comprises the stator blade on the wheel hub and is located at the spring leaf that the close impeller outer edge on the stator blade exports; Described rotating shaft is provided with corresponding with each spring leaf respectively electromagnet and branch pipe(tube) radially, and rotating shaft is provided with axial main pipe from an end and is communicated with described branch pipe(tube); The iron block that wheel hub is provided with radial motion is corresponding with described electromagnet, and iron block is connected with spring leaf by wire rope; The lead corresponding branch pipe(tube) in rotating shaft that connects electromagnet is connected with external control gear by brush with main pipe.
Characteristics of the present invention are can impeller diameter be changed, thereby change the performance parameter of water pump, flow and lift are improved or reduction.Can be under the situation that original motor power does not exceed standard for transforming pump, former impeller performance parameter ± carry out online adjustment in 10～15% scopes, require parameter adjustable under the situation of pump operation, having solved existing centrifugal pump can not the adjusting vane angle and change the problem of Operational Limits, and solves present industrial and mining enterprise circulation and the problem that required flow and pressure demand change often occurs producing.
The present invention need not to increase other accessorys, just can change the Operational Limits of water pump by the adjusting to water pump vane, thereby change total discharge and the pressure of system, and no matter make the energy consumption waste reach minimum, be from effect or energy saving aspect, and good performance is arranged.
Further specify technological scheme of the present invention below in conjunction with accompanying drawing.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention 1.
Fig. 2 is that the AA of Fig. 1 is to view.
Fig. 3 is the schematic representation that the push rod in the embodiment of the invention 1 matches with wheel hub.
Fig. 4 is the structural representation of the embodiment of the invention 2.
Fig. 5 is that the BB of Fig. 4 is to view.
Fig. 6 is the structural representation of the embodiment of the invention 3.
Fig. 7 is that the CC of Fig. 6 is to view.
Fig. 8 is the structural representation of rolling disc in the embodiment of the invention 3.
Fig. 9 is that the DD of Fig. 8 is to view.
Figure 10 is the working state schematic representation of rolling disc in the embodiment of the invention 3.
Figure 11 is the structural representation of the embodiment of the invention 4.
Figure 12 is that the EE of Figure 11 is to view.
Embodiment
See Fig. 1, Fig. 2, the online adjustable centrifugal water pump of blade comprises by rotating shaft 1 being located at impeller in the pump housing, and impeller comprises by key 13 and is fixed on wheel hub 3 in the rotating shaft 1, is located at cover plate 2 and some blades on the wheel hub 3; Each blade is divided into two-part, comprises the stator blade 4 on the wheel hub 3 and the moving vane 6 that exports near impeller outer edge, and moving vane 6 is hinged on the cover plate 2 by hinge 5; Described rotating shaft 1 is provided with some oil cylinder jacking apparatus radially and matches with described moving vane 6 respectively; Described oil cylinder jacking apparatus comprises piston 11, the push rod 7 that radially is located at the oil cylinder 12 in the rotating shaft 1 and establishes seal ring 14, piston 11 by spring 8 be located at wheel hub 3 on guiding groove in push rod 7 be connected, push rod 7 matches with the bottom of moving vane 6, and spring 8 can guarantee that push rod 7 is close to moving vane 6 constantly; Corresponding each moving vane 6 is provided with position limit pin 9 on the cover plate 2, is used for the angle change location of restraint blade 6 maximums; Be provided with the radially branch pipe(tube) 10 that is communicated with oil cylinder 12 in the described rotating shaft 1, rotating shaft 1 is provided with axial main pipe 15 from an end and is communicated with the branch pipe(tube) 10 that is connected oil cylinder 12, and this end makes main pipe 15 be communicated with external hydraulic system 17 by swivel joint 16.
The mated condition of push rod and wheel hub as shown in Figure 3, upstream face 71 and the back side 72 of push rod 7 are designed to taper and trapezoidal respectively, so not only can reduce energy loss, can also reduce the area of contact of push rod 7 and wheel hub 2, prevent that push rod 7 is stuck.
The present invention also can add the sheet rubber (not shown) at the jointing of stator blade 4 and moving vane 6, and anti-sealing is leaked by running clearance between the two, causes a large amount of losses of efficient.
Working principle: when control hydraulic system 17 is oily to the oil cylinder jacking apparatus supply pressure in the rotating shaft 1 by main pipe 15 and branch pipe(tube) 10, piston 11 will pass through spring 8 outside penetrator rams 7, push rod 7 promotes moving vane 6 and outwards rotates, angle of run becomes greatly, impeller diameter becomes big, and flow and lift that centrifugal pump offers system improve; On the contrary, when the pressure oil of supply reduces, be subjected to the active force of water at moving vane 6() compressing under, piston 11 is motion inwardly, moving vane 6 angle of run diminish, impeller diameter diminishes, and flow and lift that this pump offers system reduce, thereby realize that water pump is online adjustable.
See Fig. 4, Fig. 5, the online adjustable centrifugal water pump of blade of the present invention comprises by rotating shaft 1 being located at impeller in the pump housing, and impeller comprises by key 13 and is fixed on wheel hub 3 in the rotating shaft 1, is located at cover plate 2 and some blades on the wheel hub 3; Each blade is divided into two-part, comprises the stator blade 4 on the wheel hub 3 and is located at the spring leaf 18 that the close impeller outer edge on the stator blade 4 exports; Described rotating shaft 1 is provided with respectively the radially branch pipe(tube) 10 corresponding with spring leaf 18, and described rotating shaft 1 is provided with axial main pipe 15 from an end and is communicated with described branch pipe(tube) 10; Be connected with wire rope 19 corresponding branch pipe(tube) 10 and main pipe 15 in rotating shaft 1 on the described spring leaf 18 respectively and be connected with rope tension unit 20 outside the rotating shaft 1, rope tension unit 20 can adopt the ratchet capstan arrangement of routine.
Present embodiment can utilize rope tension unit 20, thereby pulling wire rope 19 bends spring leaf 18, and the exit angle of blade, impeller diameter are reduced.Make spring leaf 18 under the effect of self elastic force, return to original form (spring leaf 18 bending resistance yield stresses are much larger than the pressure of water to spring leaf 18) thereby unclamp wire rope 19, the exit angle of blade, impeller diameter are increased.
See Fig. 6, Fig. 7, the online adjustable centrifugal water pump of blade of the present invention comprises by rotating shaft 1 being located at impeller in the pump housing that impeller comprises wheel hub 3, is located at cover plate 2 and some blades on the wheel hub 3; Each blade is divided into two-part, comprises the stator blade 4 on the wheel hub 3 and is located at the spring leaf 18 that the close impeller outer edge on the stator blade 4 exports; Described rotating shaft 1 is provided with 1 rolling disc 22 that rotates around the shaft, rolling disc 22(is referring to Fig. 8,9) comprise a hollow disk body, the biside plate 223 of disk body and rotating shaft 1 sealing, be provided with in the disk body one with the dividing plate 221 of rotating shaft 1 sealing, rotating shaft 1 in the disk body is provided with radially a baffle plate 21, form airtight hydraulic space 222 diametrically between the baffle plate 21 in the disk body of rolling disc 22, dividing plate 221 and the rotating shaft 1, disk body is provided with a circle convex tendon 224 outward, and convex tendon 224 is provided with the hole 225 corresponding with spring leaf 18; Rotating shaft 1 is provided with the radially branch pipe(tube) 10 that is communicated with hydraulic space 222, and described rotating shaft 1 is provided with axial main pipe 15 from an end and is communicated with described branch pipe(tube) 10, and this end makes main pipe 15 be communicated with external hydraulic system 17 by swivel joint 16; Being connected with wire rope 19 on the described spring leaf 18 respectively is connected with hole 225 on described rolling disc 22 convex tendons 224.
During present embodiment work, when control hydraulic system 17 is oily to hydraulic space 222 supply pressures between rotating shaft 1 and the rolling disc 22 by main pipe 15 and branch pipe(tube) 10, rolling disc 22 will rotate (referring to Figure 10) along the direction of arrow, thereby reel and spur wire rope 19 spring leaf 18 is bent, the exit angle of blade, impeller diameter are reduced.When the pressure that reduces to control in the hydraulic system 17, spring leaf 18 pulling wire rope 19 under the effect of self elastic force drives rolling discs 22 and returns to original form (spring leaf 18 bending resistance yield stresses are much larger than the pressure of water to spring leaf 18, and the frictional force between axle 1 and the rolling disc 22), the exit angle of blade, impeller diameter are increased.
See Figure 11, Figure 12, the online adjustable centrifugal water pump of blade of the present invention comprises by rotating shaft 1 being located at impeller in the pump housing that impeller comprises wheel hub 3, is located at cover plate 2 and some blades on the wheel hub 3; Each blade is divided into two-part, comprises the stator blade 4 on the wheel hub 3 and is located at the spring leaf 18 that the close impeller outer edge on the stator blade 4 exports; Described rotating shaft 1 is provided with respectively the electromagnet 23 corresponding with each spring leaf 18 and branch pipe(tube) 10 radially, wheel hub 3 is provided with guiding groove 27, the iron block 24 that is provided with radial motion in the guiding groove 27 is corresponding with described electromagnet 23, and iron block 24 is connected with spring leaf 18 by wire rope 19; Rotating shaft 1 is provided with axial main pipe 15 from an end and is communicated with described branch pipe(tube) 10, and the lead corresponding branch pipe(tube) 10 in rotating shaft 1 that connects electromagnet 23 is connected with external control gear 26 by brush 25 with main pipe 15.
During present embodiment work, can allow the magnetic force of the electromagnet 23 in the rotating shaft 1 change by control gear 17 control size of current, increase the electric current [strength of electromagnet 23, iron block 24 is attracted inwardly motion by electromagnet 23, thereby pulling wire rope 19 bends spring leaf 18, and the exit angle of blade, impeller diameter are reduced; Reduce electric current [strength, electromagnet 23 magnetic force are diminished, spring leaf 18 returns to original form (spring leaf 18 bending resistance yield stresses are much larger than the pressure of water to blade 18) under the effect of self elastic force, and the exit angle of blade, impeller diameter are increased.
Claims (7)
1. online adjustable centrifugal water pump of blade comprises by rotating shaft being located at impeller in the pump housing that impeller comprises wheel hub, is located at cover plate and some blades on the wheel hub; It is characterized in that each blade is divided into two-part, comprise the stator blade on the wheel hub and the moving vane that exports near impeller outer edge, moving vane is on the cover board hinged; Described rotating shaft is provided with some oil cylinder jacking apparatus radially and matches with described moving vane respectively, and described rotating shaft is provided with pipeline from an end and is communicated with described oil cylinder jacking apparatus, and this end makes pipeline be communicated with external hydraulic system by swivel joint.
2. the online adjustable centrifugal water pump of blade according to claim 1, it is characterized in that described oil cylinder jacking apparatus comprises the oil cylinder that radially is located in the rotating shaft and piston, the push rod that is connected with piston, described piston is connected with push rod by spring, described push rod matches with the bottom of described moving vane, and corresponding each moving vane is provided with position limit pin on the described cover plate.
3. the online adjustable centrifugal water pump of blade according to claim 2 is characterized in that described wheel hub is provided with the guiding groove that cooperates with described push rod.
4. online adjustable centrifugal water pump of blade comprises by rotating shaft being located at impeller in the pump housing that impeller comprises wheel hub, is located at cover plate and some blades on the wheel hub; It is characterized in that each blade is divided into two-part, comprise the stator blade on the wheel hub and be located at the spring leaf that the close impeller outer edge on the stator blade exports; Described rotating shaft is provided with corresponding with spring leaf respectively radially branch pipe(tube), and described rotating shaft is provided with axial main pipe from an end and is communicated with described branch pipe(tube); Being connected with wire rope corresponding branch pipe(tube) and main pipe in rotating shaft on the described spring leaf respectively is connected with rope tension unit outside the rotating shaft.
5. online adjustable centrifugal water pump of blade comprises by rotating shaft being located at impeller in the pump housing that impeller comprises wheel hub, is located at cover plate and some blades on the wheel hub; It is characterized in that each blade is divided into two-part, comprise the stator blade on the wheel hub and be located at the spring leaf that the close impeller outer edge on the stator blade exports; Described rotating shaft is provided with the rolling disc that rotates around the axis, radially be provided with airtight hydraulic space between rolling disc and the rotating shaft, rotating shaft is provided with the radially branch pipe(tube) that is communicated with hydraulic space, described rotating shaft is provided with axial main pipe from an end and is communicated with described branch pipe(tube), and this end makes main pipe be communicated with external hydraulic system by swivel joint; Being connected with wire rope on the described spring leaf respectively is connected with described rolling disc.
6. the online adjustable centrifugal water pump of blade according to claim 5, it is characterized in that described rolling disc comprises a hollow disk body, the biside plate of disk body and rotating shaft sealing, be provided with in the disk body one with the dividing plate of rotating shaft sealing, rotating shaft in the disk body is provided with radially a baffle plate, forms described hydraulic space between the baffle plate in the disk body of rolling disc, dividing plate and the rotating shaft diametrically.
7. online adjustable centrifugal water pump of blade comprises by rotating shaft being located at impeller in the pump housing that impeller comprises wheel hub, is located at cover plate and some blades on the wheel hub; It is characterized in that each blade is divided into two-part, comprise the stator blade on the wheel hub and be located at the spring leaf that the close impeller outer edge on the stator blade exports; Described rotating shaft is provided with corresponding with each spring leaf respectively electromagnet and branch pipe(tube) radially, and rotating shaft is provided with axial main pipe from an end and is communicated with described branch pipe(tube); The iron block that wheel hub is provided with radial motion is corresponding with described electromagnet, and iron block is connected with spring leaf by wire rope; The lead corresponding branch pipe(tube) in rotating shaft that connects electromagnet is connected with external control gear by brush with main pipe.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310120909.6A CN103185025B (en) | 2013-04-09 | 2013-04-09 | The online adjustable centrifugal water pump of a kind of blade |
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| CN201310120909.6A CN103185025B (en) | 2013-04-09 | 2013-04-09 | The online adjustable centrifugal water pump of a kind of blade |
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| CN103185025A true CN103185025A (en) | 2013-07-03 |
| CN103185025B CN103185025B (en) | 2015-08-19 |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134645A (en) * | 2015-09-01 | 2015-12-09 | 兰州理工大学 | Impeller and centrifugal pump provided with same |
| CN106194553A (en) * | 2015-05-29 | 2016-12-07 | 高彦龙 | Water-energy power machine |
| CN107131145A (en) * | 2016-02-26 | 2017-09-05 | 江苏江进泵业有限公司 | A kind of centrifugal pump impeller with straightener(stator) blade |
| US20180172010A1 (en) * | 2016-12-21 | 2018-06-21 | Saudi Arabian Oil Company | Centrifugal pump with adaptive pump stages |
| CN109505779A (en) * | 2018-12-10 | 2019-03-22 | 浙江理工大学 | The experimental provision and method that back blade cornerite size influences centrifugal pump axial force |
| CN109980894A (en) * | 2019-04-12 | 2019-07-05 | 宁波方太厨具有限公司 | The slow driving device of water pump vane |
| CN110080835A (en) * | 2019-03-21 | 2019-08-02 | 华电电力科学研究院有限公司 | A kind of high revolving speed direct acting leaf of steam turbine high efficiency and its application method |
| CN111306074A (en) * | 2018-10-30 | 2020-06-19 | 杭州富阳锦丰纸业有限公司 | Urea filling pump for diesel vehicle |
| CN111322252A (en) * | 2018-10-30 | 2020-06-23 | 杭州富阳锦丰纸业有限公司 | A filling pump for urea |
| CN113819089A (en) * | 2021-09-27 | 2021-12-21 | 合肥恒大江海泵业股份有限公司 | Integral type submerged motor pump blade adjusting device |
| US11499563B2 (en) | 2020-08-24 | 2022-11-15 | Saudi Arabian Oil Company | Self-balancing thrust disk |
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| US11644351B2 (en) | 2021-03-19 | 2023-05-09 | Saudi Arabian Oil Company | Multiphase flow and salinity meter with dual opposite handed helical resonators |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194553A (en) * | 2015-05-29 | 2016-12-07 | 高彦龙 | Water-energy power machine |
| CN105134645A (en) * | 2015-09-01 | 2015-12-09 | 兰州理工大学 | Impeller and centrifugal pump provided with same |
| CN105134645B (en) * | 2015-09-01 | 2017-10-17 | 兰州理工大学 | A kind of impeller and the centrifugal pump for being provided with the impeller |
| CN107131145A (en) * | 2016-02-26 | 2017-09-05 | 江苏江进泵业有限公司 | A kind of centrifugal pump impeller with straightener(stator) blade |
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| US10533558B2 (en) * | 2016-12-21 | 2020-01-14 | Saudi Arabian Oil Company | Centrifugal pump with adaptive pump stages |
| US11268520B2 (en) | 2016-12-21 | 2022-03-08 | Saudi Arabian Oil Company | Centrifugal pump with adaptive pump stages |
| US11268519B2 (en) | 2016-12-21 | 2022-03-08 | Saudi Arabian Oil Company | Centrifugal pump with adaptive pump stages |
| CN111306074A (en) * | 2018-10-30 | 2020-06-19 | 杭州富阳锦丰纸业有限公司 | Urea filling pump for diesel vehicle |
| CN111322252A (en) * | 2018-10-30 | 2020-06-23 | 杭州富阳锦丰纸业有限公司 | A filling pump for urea |
| CN111350673A (en) * | 2018-10-30 | 2020-06-30 | 杭州富阳锦丰纸业有限公司 | Urea filling pump |
| CN109505779A (en) * | 2018-12-10 | 2019-03-22 | 浙江理工大学 | The experimental provision and method that back blade cornerite size influences centrifugal pump axial force |
| CN109505779B (en) * | 2018-12-10 | 2023-12-29 | 浙江理工大学 | Experimental device and method for influence of wrap angle of back vane on axial force of centrifugal pump |
| CN110080835A (en) * | 2019-03-21 | 2019-08-02 | 华电电力科学研究院有限公司 | A kind of high revolving speed direct acting leaf of steam turbine high efficiency and its application method |
| CN110080835B (en) * | 2019-03-21 | 2021-08-17 | 华电电力科学研究院有限公司 | High-efficiency high-rotation-speed straight movable blade of steam turbine and using method thereof |
| CN109980894A (en) * | 2019-04-12 | 2019-07-05 | 宁波方太厨具有限公司 | The slow driving device of water pump vane |
| CN109980894B (en) * | 2019-04-12 | 2021-02-23 | 宁波方太厨具有限公司 | Water pump impeller slow-speed driving device |
| US11499563B2 (en) | 2020-08-24 | 2022-11-15 | Saudi Arabian Oil Company | Self-balancing thrust disk |
| US11920469B2 (en) | 2020-09-08 | 2024-03-05 | Saudi Arabian Oil Company | Determining fluid parameters |
| US11644351B2 (en) | 2021-03-19 | 2023-05-09 | Saudi Arabian Oil Company | Multiphase flow and salinity meter with dual opposite handed helical resonators |
| US11591899B2 (en) | 2021-04-05 | 2023-02-28 | Saudi Arabian Oil Company | Wellbore density meter using a rotor and diffuser |
| US11913464B2 (en) | 2021-04-15 | 2024-02-27 | Saudi Arabian Oil Company | Lubricating an electric submersible pump |
| CN113819089A (en) * | 2021-09-27 | 2021-12-21 | 合肥恒大江海泵业股份有限公司 | Integral type submerged motor pump blade adjusting device |
| CN113819089B (en) * | 2021-09-27 | 2022-09-27 | 合肥恒大江海泵业股份有限公司 | Integral type submerged motor pump blade adjusting device |
| US11994016B2 (en) | 2021-12-09 | 2024-05-28 | Saudi Arabian Oil Company | Downhole phase separation in deviated wells |
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