CN110513325B - Spiral axial-flow pump impeller with postposition reverse thickening splitter blade - Google Patents
Spiral axial-flow pump impeller with postposition reverse thickening splitter blade Download PDFInfo
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- CN110513325B CN110513325B CN201910873615.8A CN201910873615A CN110513325B CN 110513325 B CN110513325 B CN 110513325B CN 201910873615 A CN201910873615 A CN 201910873615A CN 110513325 B CN110513325 B CN 110513325B
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- splitter blade
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/181—Axial flow rotors
Abstract
The invention relates to the technical field of oil-gas mixed transportation, in particular to a spiral axial-flow pump impeller with a rear-mounted reverse thickening splitter blade, which comprises a hub and a spiral axial-flow blade; a plurality of spiral axial flow type blades are fixed on the outer ring surface of the hub in a spiral shape, and the space among the spiral axial flow type blades forms a flow channel; and a reverse thickened splitter blade is arranged in the flow channel of each spiral axial-flow blade, which is close to the outlet. The pressure and reverse thickening characteristics of the two-phase medium at the outlet of the splitter blade apply force to the two-phase medium, so that the efficiency of the mixing pump is improved.
Description
Technical Field
The invention relates to the technical field of oil-gas mixed transportation, in particular to a spiral axial-flow pump impeller with a rear-mounted reverse thickening splitter blade.
Background
With the development of the world economy, the demand of various countries for oil and natural gas is increasing day by day. With the progress of science and technology, the exploitation process of petroleum and natural gas is continuously innovated. The oil gas gathering and transportation is an important component in the oil and natural gas exploitation process, and particularly refers to the whole process of gathering the crude oil, natural gas and other products produced by an oil well and transporting the gathered crude oil, natural gas and other products to an oil refinery and natural gas users through processing and processing, and mainly comprises the processes of oil gas separation and metering, crude oil dehydration, natural gas purification, light hydrocarbon recovery and the like. Oil and gas gathering and transportation can be divided into two categories of oil and gas gathering and transportation respectively and oil and gas gathering and transportation in a mixed manner. In recent decades, as the construction of offshore oil and gas fields has increased, the amount of pipelines to be laid can be reduced without adding a separation device, and the oil and gas mixed transportation pump is suitable for long-distance transportation of crude oil mixtures, and a large amount of capital can be saved in development. At present, the technology of the United states, the British, the Germany and the Japan is relatively mature internationally, China is still in a research stage, and no product is exported abroad for a while.
The performance of the oil-gas mixed transportation pump mainly has three measurement indexes: pressure, oil-gas ratio application range and efficiency. If all three criteria are high, the better the performance. In terms of current research, the screw pump can adapt to large oil-gas ratio more than a single screw pump, and can reach 90% of gas content. A few countries, such as the united states, have been able to process 100% liquid to 100% gas. The characteristics of the pump are not clear in theory, and the problem of heat generation of the pump caused by long-term operation when the gas content is increased is not solved well; the pressure of the liquid ring pump adopting the novel structure can be increased to (10-15) x 105Pa, but the efficiency is low; generally, the centrifugal pump cannot work normally when a little air is mixed in. At present, through structural modification, 20% of mixed gas can still work, but the requirement of oil-gas mixed transportation is far less met.
Disclosure of Invention
The invention aims to provide a spiral axial-flow pump impeller with a rear-mounted reverse thickening splitter blade, which is reasonable in design and can apply force to two-phase media at an outlet through the characteristics of pressurization and reverse thickening of the splitter blade, so that the efficiency of a mixed delivery pump is improved.
In order to achieve the purpose, the invention adopts the following technical scheme: it comprises a hub and a spiral axial flow blade; a plurality of spiral axial flow type blades are fixed on the outer ring surface of the hub in a spiral shape, and the space among the spiral axial flow type blades forms a flow channel; and a reverse thickened splitter blade is arranged in the flow channel of each spiral axial-flow blade, which is close to the outlet.
Further, each reverse thickening splitter blade is fixed perpendicularly on the outer ring surface of the hub.
Furthermore, the reverse thickening splitter blade is of a cambered surface sheet structure, a flow channel with gradually changed diameter is formed between the surface of the reverse thickening splitter blade and the surface of the spiral axial flow blade, and the thickness from the position connected with the hub to the position of the wheel rim is gradually increased.
The working principle of the invention is as follows: the reverse thickening splitter blade is additionally arranged at the outlet of the blade and used for improving the static pressure at the outlet of the impeller, so that the oil-gas separation degree is reduced; meanwhile, the increased splitter blade is set to be reversely thickened by utilizing the structural characteristic that the splitter blade is reversely thickened, and when a liquid phase is subjected to larger centrifugal force and is separated from a gas phase, the reversely thickened splitter blade applies acting force opposite to the centrifugal force to the liquid phase, so that the gas phase and the liquid phase are more fully mixed.
After adopting the structure, the invention has the beneficial effects that: the invention provides a spiral axial-flow pump impeller with a postposition reverse thickening splitter blade, which applies force to a two-phase medium at an outlet through the characteristics of pressurization and reverse thickening of the splitter blade, thereby improving the efficiency of a mixed delivery pump.
Description of the drawings:
fig. 1 is a schematic structural view of the present invention.
Description of reference numerals:
the spiral axial flow type turbine blade comprises a hub 1, a spiral axial flow type blade 2 and a reverse thickening splitter blade 3.
The specific implementation mode is as follows:
the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the following technical solutions are adopted in the present embodiment: it comprises a hub 1 and a spiral axial flow blade 2; a plurality of spiral axial flow type blades 2 are fixed on the outer ring surface of the hub 1 in a spiral shape, and the space among the spiral axial flow type blades 2 forms a flow channel; a reverse thickened splitter blade 3 is arranged in a flow channel of each spiral axial-flow blade 2 close to the outlet; every reverse thickening splitter blade 3 is all vertical fixation on wheel hub 1's outer anchor ring, and reverse thickening splitter blade 3 is cambered surface lamellar structure, form the runner of gradual change reducing between its surface and spiral axial flow blade 2's the surface, be gradually increasing gradually the formula setting from the thickness of being connected department with wheel hub 1 to rim position department, when the liquid phase received great centrifugal force and with gas phase separation, reverse thickening splitter blade 3 applyed the effort opposite with centrifugal force to it, and then made the two-phase more intensive mixing of gas-liquid.
The working principle of the specific embodiment is as follows: when a traditional spiral axial-flow pump is used for conveying a mixed medium of oil gas, due to the density difference of two phases of the oil gas, centrifugal forces borne by an impeller when the impeller applies work to the oil gas and the mixed medium are different, so that gas-phase media are gathered at two thirds of hubs at the outlet of blades of the impeller, and after the reverse thickening splitter blade 3 is additionally arranged, static pressure at the outlet of the impeller can be improved, so that the separation degree of the oil gas is reduced, and the efficiency of the mixed delivery pump is improved; the purpose of setting to reverse thickening utilizes reverse thickening splitter blade 3's structural feature, and when the liquid phase received great centrifugal force and separated with the gaseous phase, reverse thickening splitter blade 3 applyed the effort opposite with centrifugal force to it, and then made the double-phase intensive mixing more of gas-liquid.
After adopting above-mentioned structure, this embodiment's beneficial effect is: the specific embodiment provides a spiral axial-flow pump impeller with a postposition reverse thickening splitter blade, and the two-phase medium at the outlet is pressurized and applied with force by the characteristics of reverse thickening through the splitter blade, so that the efficiency of a mixed delivery pump is improved.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (4)
1. The utility model provides a spiral axial-flow pump impeller with rearmounted reverse thickening splitter blade which characterized in that: the spiral axial flow type turbine comprises a hub (1) and a spiral axial flow type blade (2); a plurality of spiral axial flow type blades (2) are fixed on the outer annular surface of the hub (1) in a spiral shape, and the spaces among the spiral axial flow type blades (2) form a flow channel; a reverse thickened splitter blade (3) is arranged in a flow channel of each spiral axial-flow blade (2) close to the outlet; a flow channel with gradually changed diameter is formed between the surface of the reverse thickening splitter blade (3) and the surface of the spiral axial flow blade (2), and the thickness from the position connected with the hub (1) to the position of the wheel rim is gradually increased.
2. A helical axial flow pump impeller with a rear oppositely thickened splitter vane as claimed in claim 1 wherein: each reverse thickening splitter blade (3) is vertically fixed on the outer ring surface of the hub (1).
3. A helical axial flow pump impeller with a rear oppositely thickened splitter vane as claimed in claim 1 wherein: the reverse thickening splitter blade (3) is of a cambered surface sheet structure.
4. The utility model provides a spiral axial-flow pump impeller with rearmounted reverse thickening splitter blade which characterized in that: the working principle is as follows: the reverse thickening splitter blade is additionally arranged at the outlet of the blade and used for improving the static pressure at the outlet of the impeller, so that the oil-gas separation degree is reduced; meanwhile, the increased splitter blade is set to be reversely thickened by utilizing the structural characteristic that the splitter blade is reversely thickened, and when a liquid phase is subjected to larger centrifugal force and is separated from a gas phase, the reversely thickened splitter blade applies acting force opposite to the centrifugal force to the liquid phase, so that the gas phase and the liquid phase are more fully mixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910873615.8A CN110513325B (en) | 2019-09-17 | 2019-09-17 | Spiral axial-flow pump impeller with postposition reverse thickening splitter blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910873615.8A CN110513325B (en) | 2019-09-17 | 2019-09-17 | Spiral axial-flow pump impeller with postposition reverse thickening splitter blade |
Publications (2)
| Publication Number | Publication Date |
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| CN110513325A CN110513325A (en) | 2019-11-29 |
| CN110513325B true CN110513325B (en) | 2020-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910873615.8A Active CN110513325B (en) | 2019-09-17 | 2019-09-17 | Spiral axial-flow pump impeller with postposition reverse thickening splitter blade |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114183375B (en) * | 2021-11-24 | 2023-05-09 | 江苏大学 | Non-rotating shaft type axial flow pump |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2602200Y (en) * | 2002-12-30 | 2004-02-04 | 石油大学(北京) | Polyphase supercharging device |
| EP2628958A2 (en) * | 2012-02-17 | 2013-08-21 | E.G.O. ELEKTRO-GERÄTEBAU GmbH | Diffuser for an impeller pump and impeller pump |
| CN204783809U (en) * | 2015-05-22 | 2015-11-18 | 罗永福 | Impeller of water pump |
| CN106650105A (en) * | 2016-12-25 | 2017-05-10 | 宁波至高点工业设计有限公司 | Design method for mixed-flow pump impeller |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640742B (en) * | 2016-12-06 | 2022-10-11 | 西华大学 | Spiral axial-flow type oil-gas mixed transportation pump impeller |
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- 2019-09-17 CN CN201910873615.8A patent/CN110513325B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2602200Y (en) * | 2002-12-30 | 2004-02-04 | 石油大学(北京) | Polyphase supercharging device |
| EP2628958A2 (en) * | 2012-02-17 | 2013-08-21 | E.G.O. ELEKTRO-GERÄTEBAU GmbH | Diffuser for an impeller pump and impeller pump |
| CN103557156A (en) * | 2012-02-17 | 2014-02-05 | E.G.O.电气设备制造股份有限公司 | Diffuser for an impeller pump and impeller pump |
| CN204783809U (en) * | 2015-05-22 | 2015-11-18 | 罗永福 | Impeller of water pump |
| CN106650105A (en) * | 2016-12-25 | 2017-05-10 | 宁波至高点工业设计有限公司 | Design method for mixed-flow pump impeller |
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| CN110513325A (en) | 2019-11-29 |
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