CN203067340U - Efficient asymmetric guide vane body matched with annular pumping chamber - Google Patents
Efficient asymmetric guide vane body matched with annular pumping chamber Download PDFInfo
- Publication number
- CN203067340U CN203067340U CN 201320001584 CN201320001584U CN203067340U CN 203067340 U CN203067340 U CN 203067340U CN 201320001584 CN201320001584 CN 201320001584 CN 201320001584 U CN201320001584 U CN 201320001584U CN 203067340 U CN203067340 U CN 203067340U
- Authority
- CN
- China
- Prior art keywords
- pumping chamber
- blade
- guide vane
- annular pumping
- diffuser
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses an efficient asymmetric guide vane body matched with an annular pumping chamber. The efficient asymmetric guide vane body matched with the annular pumping chamber is composed of vanes (1) and a cover plate (2), the guide vane body is arranged between an impeller (3) and the annular pumping chamber (4), and the vanes (1) are fixed on the cover plate (2) and are asymmetrically arranged along the peripheral direction. A first piece of the vanes is set as a starting point, an outlet edge of an adjacent vane and an outlet edge of a front vane form an included angle theta along the rotating direction of the impeller, the included angle is relevant to the number of the vanes and is gradually increased along by 2-50, and the sum of all the included angles is 3600 degrees. A best placing angel between the radius of the outlet edge of the first piece of the vane and a central line of an outlet of the annular pumping chamber is 0-150 degrees. Structural parameters of placing angles of inlets, placing angles of outlets, wrap angles and the like of all the vanes are the same. The asymmetric structure is suitable for design of both a cylindrical radial guide vane and the design of a distortion type space guide vane. The guide vane body which is arranged asymmetrically improves waterpower matching performance of the impeller and the pumping chamber, and therefore improves efficiency and operation stability of a pump.
Description
Technical field
The utility model relates to a kind of efficient asymmetric diffuser that mates annular pumping chamber, belongs to field of fluid machinery.
Background technique
Diffuser is a kind of device that is widely used in the water pump.In some water pumps, owing to reasons such as structure and design often need be designed to pumping chamber loop configuration, because the matching properties of annular pumping chamber and impeller is lower, fluid produces bigger hydraulic loss in annular pumping chamber, cause pump efficiency lower.Diffuser can be collected from the liquid that impeller flows out and be delivered to the downstream, and the kinetic energy of part liquid stream is converted into pressure energy, eliminates the rotation of liquid stream, can improve pump efficiency significantly.Traditional diffuser blade all adopts the structure of along the circumferential direction evenly arranging, according to the fluid flowing law as can be known: the flow that flows out diffuser along the impeller sense of rotation increases gradually, when adopting the structure of the even layout of blade, flow difference in each runner will cause the liquid velocity skewness, cause hydraulic loss increase in the diffuser, reduce pump efficiency, even bring out pump housing vibration, pump operation stability is exerted an influence.Research data shows that also hydraulic loss occupies bigger ratio in the diffuser in whole pump.
Mainly concentrate on the optimization of factors such as vane type line, geometric parameter, the number of blade at present at the research of diffuser.Huang Hui etc. have studied the outlet diameter, blade exit laying angle of diffuser to the influence of impeller matching properties and pump performance.Zhang Desheng etc. have studied the influence of the diagonal pumps stator number of blade to pump performance and pressure pulsation.Zhou Ling etc. study deep-well pump, have analyzed to have two kinds of different blade shape diffusers of cylinder type and meander configuration to the influence of pump performance.Present research is research object with the diffuser that blade is evenly arranged along circumference all, as yet from the layout research stator performance of blade, with the efficient of further raising diffuser and with the matching performance of impeller, pumping chamber.Therefore the design that breaks traditions is carried out structural remodeling to diffuser and is had practical significance.
Summary of the invention
In order to improve the efficient of diffuser, the blade that the utility model breaks traditions is even arrangement along the circumferential direction, has proposed a kind of blade diffuser of asymmetric arrangement along the circumferential direction.
A kind of efficient asymmetric diffuser that mates annular pumping chamber of the utility model, this diffuser are by blade, and cover plate is formed, and diffuser is installed between impeller and the annular pumping chamber.The blade of described diffuser is starting point with first blade, along the impeller sense of rotation along the circumference asymmetric arrangement, the outlet limit of adjacent blades and the angle of last exit edge of blade are θ, this angle is relevant with the number of blade, increase gradually by 2 ~ 5 °, and all angle sums is 360 °.Optimum angle is 0 ~ 15 ° between the outlet limit place radius of first blade and the annular pumping chamber center line of discharge, and structural parameter such as the laying angle of all blades, cornerite are all identical.The non-symmetry structure that the utility model proposes all is applicable to the radially design of stator and meander configuration spatial guide blade of cylinder type.
The utility model has the advantages that: increase this characteristic according to fluid on the diffuser outlet flow section along water pump sense of rotation flow, by increasing the angle between the blade gradually, the conveyance capacity of each runner of reconstruct, meet true flowing law, the diffuser fluid velocity inside is evenly distributed, thereby reach the purpose that reduces pump internal flow loss, the diffuser of asymmetric arrangement has improved the waterpower matching performance of impeller and pumping chamber, can improve efficient and the operation stability of pump.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is asymmetric mechanism of the present utility model guide vane teunnion schematic cross-section.
Fig. 2 is the diffuser shaft section figure that traditional blade is evenly arranged.
Embodiment
After finishing diffuser by traditional design method, blade adopts the asymmetric arrangement mode as shown in Figure 1, and blade 1 is fixed on the cover plate 2, and diffuser is installed between impeller 3 and the annular pumping chamber 4.When the spatial guide blade of the radially stator that designs cylinder type and meander configuration, adopt blade along circumference asymmetric arrangement structure, be example with Fig. 1: this stator number of blade is 11, be starting point with first blade, the angle theta of second blade and first blade is 22.7 °, the outlet limit of adjacent blades and the angle of last exit edge of blade increase gradually with 2 °, it is 15 ° that the outlet limit of first blade and annular pumping chamber center line of discharge the best are laid angle, the laying angle of all blades, structural parameter such as cornerite are identical, traditional blade layout as shown in Figure 2, adopt identical impeller 3 and pumping chamber 4, stator blade 1 arranges evenly that along circumference the angle of adjacent blades is 32.7 °.Adopt the CFD means that pump performance is predicted in this example, under the condition of identical impeller and pumping chamber, when adopting asymmetrical diffuser, the efficient of pump is than adopting tradition to arrange that evenly diffuser improves 1.0%.Diffuser adopts precision casting process to finish, and guarantees the position of the relative pumping chamber of diffuser during installation.The velocity field that the utility model has improved the diffuser inner fluid distributes, make that the flow velocity degree is evenly distributed between each blade passage, reduce hydraulic loss, thereby reach the purpose that reduces pump internal flow loss, the diffuser of asymmetric arrangement has improved the matching performance of impeller and pumping chamber, and then improves efficient and the operation stability of pump.
Claims (3)
1. efficient asymmetric diffuser that mates annular pumping chamber, this diffuser are by blade (1), and cover plate (2) is formed, and diffuser is installed between impeller (3) and the annular pumping chamber (4); It is characterized in that, vanes fixed on the cover board, blade is asymmetric arrangement along the circumferential direction; Be starting point with first blade, along the impeller sense of rotation, the outlet limit of adjacent blades and the angle of last exit edge of blade are θ, and this angle is relevant with the number of blade, by 2 ~ 5
0Increase gradually, and all angle sums are 360
0
2. the efficient asymmetric diffuser of the annular pumping chamber of coupling according to claim 1 is characterized in that, the laying angle of all blades, the structural parameter of cornerite are identical.
3. the efficient asymmetric diffuser of the annular pumping chamber of coupling according to claim 1 is characterized in that, angle is 0 ~ 15 between the outlet limit place radius of first blade and the center line of discharge of annular pumping chamber
0
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320001584 CN203067340U (en) | 2013-01-04 | 2013-01-04 | Efficient asymmetric guide vane body matched with annular pumping chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320001584 CN203067340U (en) | 2013-01-04 | 2013-01-04 | Efficient asymmetric guide vane body matched with annular pumping chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203067340U true CN203067340U (en) | 2013-07-17 |
Family
ID=48766130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320001584 Expired - Fee Related CN203067340U (en) | 2013-01-04 | 2013-01-04 | Efficient asymmetric guide vane body matched with annular pumping chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203067340U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032370A (en) * | 2013-01-04 | 2013-04-10 | 江苏大学 | Efficient asymmetric guide blade body matched with annular pumping chamber |
| CN103883558A (en) * | 2014-03-13 | 2014-06-25 | 江苏大学 | Efficient non-uniform wrap angle guide vane body matched with annular pumping chamber |
| CN108019374A (en) * | 2017-11-10 | 2018-05-11 | 江苏大学 | A kind of centrifugal pump asymmetric impeller |
-
2013
- 2013-01-04 CN CN 201320001584 patent/CN203067340U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032370A (en) * | 2013-01-04 | 2013-04-10 | 江苏大学 | Efficient asymmetric guide blade body matched with annular pumping chamber |
| CN103032370B (en) * | 2013-01-04 | 2015-06-10 | 江苏大学 | Efficient asymmetric guide blade body matched with annular pumping chamber |
| CN103883558A (en) * | 2014-03-13 | 2014-06-25 | 江苏大学 | Efficient non-uniform wrap angle guide vane body matched with annular pumping chamber |
| CN108019374A (en) * | 2017-11-10 | 2018-05-11 | 江苏大学 | A kind of centrifugal pump asymmetric impeller |
| CN108019374B (en) * | 2017-11-10 | 2020-02-21 | 江苏大学 | Asymmetric impeller for centrifugal pump |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103032370B (en) | Efficient asymmetric guide blade body matched with annular pumping chamber | |
| EP3364044B1 (en) | Centrifugal compressor comprising a gas-supplementing structure | |
| CN203067340U (en) | Efficient asymmetric guide vane body matched with annular pumping chamber | |
| CN201083177Y (en) | Draft tube | |
| CN104832460B (en) | A kind of diffused guide ring for matching pump radial asymmetrical diffuser | |
| CN103775377A (en) | Torque flow pump hydraulic design method by adopting long-short vanes | |
| CN104100537A (en) | LNG (liquefied natural gas) immersed centrifugal pump | |
| CN103089709B (en) | Vortex-segregating stream-guiding water inlet structure of axial flow pump | |
| CN103438025B (en) | Pump with double-layer sleeve-type inlet and outlet flow channels | |
| CN203035616U (en) | Pumping chamber for volute mixed-flow pump | |
| CN103277342A (en) | Flow backing device of nuclear power centrifugation type excess heat discharge pump | |
| CN208578778U (en) | A kind of spatial guide blade | |
| CN103016410A (en) | Space guide vane body with suction surface back vane | |
| CN203146425U (en) | Water pump with fluid director | |
| CN202441654U (en) | Elbow-shaped water inlet flow channel | |
| CN110159538B (en) | Centrifugal pump device for water pipe system | |
| CN201843821U (en) | Radial guide vane of sectional multi-stage centrifugal pump | |
| CN103883558B (en) | Efficient non-uniform wrap angle guide vane body matched with annular pumping chamber | |
| CN113864248A (en) | Streamline splitter ring matched with space guide vane type centrifugal pump | |
| CN203476813U (en) | Elbow diversion device of centrifugal compressor inlet pipeline | |
| CN203067360U (en) | Space guide vane body provided with suction surface auxiliary vanes | |
| CN103206412A (en) | Elbow-shaped inlet conduit | |
| CN105275826B (en) | A kind of ball-type pumping chamber and the mixed-flow pump of impeller arranged off-centre | |
| CN201982377U (en) | Air guider for centrifugal compressor | |
| CN204921477U (en) | Radially intake body structure with be equipped with this multistage centrifugal pump of radially intaking body structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130717 Termination date: 20160104 |