CN204213050U - A kind of spatial guide blade of multistage sectional centrifugal pump - Google Patents
A kind of spatial guide blade of multistage sectional centrifugal pump Download PDFInfo
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- CN204213050U CN204213050U CN201420508221.5U CN201420508221U CN204213050U CN 204213050 U CN204213050 U CN 204213050U CN 201420508221 U CN201420508221 U CN 201420508221U CN 204213050 U CN204213050 U CN 204213050U
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- stator
- runner
- spatial
- centrifugal pump
- guide blade
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Abstract
The utility model relates to a kind of stator of multistage sectional centrifugal pump, particularly relates to a kind of spatial guide blade of multistage sectional centrifugal pump.The spatial guide blade of this multistage sectional centrifugal pump is made up of diversion seat, spatial warping stator, stator inner ring surface guide ring bottom stator, and single runner collection section and diffuser all complete in helically twisted runner, and runner is extended in space; The import of helically twisted runner and the outlet of helically twisted runner are twisted 180 °, and whole process is regular, gradual completing, and bend section is cancelled, guide vane structure is simple, runner is open, more easily ensures gate vane channel castability, and cleaning water passage surface casting defect is with sticky husky.Compared with radial guide vane structure, stator radial dimension can reduce more than 5%, and flow hydraulic loss is little by about 3%; Compared with flow channel type guide blade structure, stator radial dimension can reduce more than 10%, and stator axial dimension can reduce more than 5%, and flow hydraulic loss is little by about 1%.
Description
Technical field
The utility model relates to a kind of stator of multistage sectional centrifugal pump, particularly relates to a kind of spatial guide blade of multistage sectional centrifugal pump.
Background technique
In multistage sectional centrifugal pump, collect from impeller liquid stream out by stator and be transported to the import of next stage impeller, therefore, designing total requirement to stator is: 1, ensure as far as possible to collect and conveying liquid process in loss reduction, and make uniform liquid enter next stage impeller; 2, reduce stator external diameter and axial dimension as far as possible, to reduce spatial volume and the materials consumption of pump, reduce the manufacture cost of product, improve the competitiveness of product in market.At present, in multistage sectional centrifugal pump, what mostly adopt is radial stator and flow channel type guide blade.Wherein:
One, radial stator.Radial stator by guide vane, bend and return guide vane three part form.Guide vane comprises helical wire portion and diffuser part.Helical wire portion is mainly used in collecting liquid; Diffuser part is mainly used in reducing flow stream velocity, and the speed by liquid stream can be converted to pressure energy, to reduce liquid flowing to hydraulic loss in bend process.Racetrack portion is mainly used in the direction changing liquid stream, makes the raw axial motion of liquid miscarriage and centripetal motion.Return guide vane is mainly used in making the import flowing into next stage impeller from racetrack portion liquid stream out uniformly, and the liquid stream controlling next stage impeller inlet is prewhirled.
The advantage of radial stator is: 1, design is shaped, and uses the most extensive; 2, casting process is ripe, and form compare is easy; 3, external diameter and axial dimension are all little than flow channel type guide blade, can reduce spatial volume and the materials consumption of pump, reduce the manufacture cost of pump.
The defect of radial stator is: 1, the guide vane of radial stator is owing to will realize collection to liquid stream and diffusion function, therefore radial dimension can not be economized very much; 2, the racetrack portion size shape change of radial stator is greatly, the liquid stream flowed out from single stator produces irrgular movement here, collide with conflux after enter return guide vane, therefore flow hydraulic loss is larger than flow channel type guide blade, is unfavorable for the efficiency of raising pump.
Two, flow channel type guide blade.Flow channel type guide blade is independently transported to the import of next stage impeller from impeller liquid stream out separately by single runner separate collection.Single runner comprises spiral collection section, diffuser, bend section and centripetal Drainage Section.
The advantage of flow channel type guide blade is: flow through from impeller liquid out the import that spiral collection section, diffuser, bend section and centripetal Drainage Section enter next stage impeller, liquid flow movement rule, not collision with conflux, therefore flow hydraulic loss is less than radial stator, is conducive to the efficiency improving pump.
Flow channel type guide blade defect be: 1, foundry goods form compare difficulty; 2, external diameter and axial dimension larger than radial stator 10% ~ 15%, add spatial volume and the materials consumption of pump, improve the manufacture cost of pump.
In the design of well use multistage pump, the radial dimension due to pump is subject to the restriction of hole diameter size, and the stator of well use multistage pump generally adopts spatial guide blade.But the type spatial guide blade axial dimension is longer, general inadaptable also not finding that there is is applied in multistage sectional centrifugal pump.
Summary of the invention
The purpose of this utility model is the spatial guide blade that will provide a kind of multistage sectional centrifugal pump, this spatial guide blade does not need the axial dimension increasing pump, radial dimension is less than radial stator by more than 5%, independently be transported to the import of the return guide vane be arranged on water pump stage casing from impeller liquid stream out separately by single runner separate collection, flow hydraulic loses less than radial stator by about 3%.
The spatial guide blade of this multistage sectional centrifugal pump of the present utility model is made up of diversion seat, spatial warping stator, stator inner ring surface guide ring bottom stator, it is characterized in that: bottom described stator, on diversion seat, uniform intervals is provided with more than 2 spatial warping stators; In the middle part of described spatial warping stator inner ring surface, stator inner ring surface guide ring is installed; Bottom the bottom trace edge stator on described spatial warping vane inlet limit, diversion seat arcuate surface forms spiral and to go in ring curve, distortion 180 °; The top trace edge stator inner ring surface guide ring inner ring surface on described spatial warping vane inlet limit forms plane and to go in ring curve, distortion 180 °.
Working principle of the present utility model is: the spatial guide blade of this multistage sectional centrifugal pump is made up of diversion seat, spatial warping stator, stator inner ring surface guide ring bottom stator, independently be transported to the import of the return guide vane water pump stage casing from impeller liquid stream out separately by single runner separate collection, continue transported to the import of next stage impeller.The single runner of the spatial guide blade of this multistage sectional centrifugal pump is regular helically twisted runner, comprising: spiral collection section and spiral diffuser.Wherein:
1, spiral collection section.First the spiral collection section of each independent flow passage of spatial guide blade is entered from impeller liquid stream out, bottom stator diversion seat, spatial warping stator, stator inner ring surface guide ring effect under, liquid stream goes in ring along spiral, and runner runs, collection, in the runner of spiral collection section, be mainly used in controlling from impeller flow stream velocity out, pressure energy by liquid stream is converted to speed energy, so that the collection realized impeller liquid stream out and runner flow of going in ring by spiral.
2, spiral diffuser.The liquid flowed out from spiral collection section flows to into spiral diffuser, is mainly used in reducing flow stream velocity, and the speed by liquid stream can be converted to pressure energy, to reduce hydraulic loss when liquid stream exports by gate vane channel the import entering return guide vane on water pump stage casing.
The single runner of the spatial guide blade of this multistage sectional centrifugal pump is regular helically twisted runner, the import of helically twisted runner and the outlet of helically twisted runner are twisted 180 °, whole process is regular, gradual completing, different with flow channel type guide blade from radial stator, there is no bend section.
The single runner of the spatial guide blade of this multistage sectional centrifugal pump does not comprise return guide vane, and return guide vane is divided to be arranged on the stage casing of water pump.
The utility model product effect major embodiment compared with prior art products is following:
1, the utility model product single runner collection section and diffuser all complete in helically twisted runner, and runner is extended in space; The import of helically twisted runner and the outlet of helically twisted runner are twisted 180 °, and whole process is regular, gradual completing, and bend section is cancelled.Therefore, compared with radial guide vane structure, stator radial dimension can reduce more than 5%; Compared with flow channel type guide blade structure, stator radial dimension can reduce more than 10%, and stator axial dimension can reduce more than 5%.
2, the import of the helically twisted runner of the utility model product and the outlet of helically twisted runner are twisted 180 °, whole process is regular, gradual completing, do not have change in shape sharply and significant flex point in whole runner, do not collide and conflux, bend section is cancelled.Therefore, compared with radial guide vane structure, flow hydraulic loss is little by about 3%; Compared with flow channel type guide blade structure, flow hydraulic loss is little by about 1%.
3, the spatial guide blade of this multistage sectional centrifugal pump of the present utility model is made up of diversion seat, spatial warping stator, stator inner ring surface guide ring bottom stator, and return guide vane is divided to be arranged on the stage casing of water pump.Therefore, guide vane structure compares radial stator and flow channel type guide blade is all simpler.
4, spatial warping stator is twisted 180 ° from inlet side to Exit-edge blade, adopt conventional casting techniques, moulding will be very difficult, but adopt new lost foam casting process, moulding all will be more prone to than radial guide vane structure and flow channel type guide blade structure, and more easily ensure gate vane channel castability, cleaning gate vane channel surface casting defect is with sticky husky.
5, the spatial guide blade of this multistage sectional centrifugal pump of the present utility model is made up of diversion seat, spatial warping stator, stator inner ring surface guide ring bottom stator; structure is very simple; runner is opening completely, very convenient to gate vane channel anticorrosion with painting, wear-resistant protective layer.Like this, can either improve that stator is anticorrosion, wear-resisting property, reduce stator manufacture cost, extend stator working life; Stator surface flatness can be improved again, reduce the hydraulic loss of current in gate vane channel, improve pump efficiency.
6, the import of the helically twisted runner of the utility model product and the outlet of helically twisted runner are twisted 180 °, and whole process is regular, gradual completing, and does not have change in shape sharply and significant flex point in whole runner; Add upper runner opening completely, easily ensure gate vane channel castability, cleaning gate vane channel surface casting defect is with sticky husky; Adding runner can anticorrosion with painting, wear-resistant protection coating; Therefore, this structure stator is specially adapted to carry sewage, and runner fouling and plugging fault can not occur.
Accompanying drawing explanation
Accompanying drawing is the structural representation of the spatial guide blade of a kind of multistage sectional centrifugal pump described in the utility model.
Symbol description in figure: the top on diversion seat arcuate surface, 6 spatial warping vane inlet limits bottom the bottom on diversion seat, 2 spatial warping stators, 3 stator inner ring surface guide rings, 4 spatial warping vane inlet limits, 5 stators bottom 1 stator, 7 stator inner ring surface guide ring inner ring surfaces, 8 spiral collection sections, 9, spiral diffuser.
Embodiment
Below in conjunction with accompanying drawing, the embodiment to the spatial guide blade of a kind of multistage sectional centrifugal pump described in the utility model is described:
In the present embodiment, the spatial guide blade of this multistage sectional centrifugal pump of the present utility model is made up of diversion seat bottom stator 1, spatial warping stator 2, stator inner ring surface guide ring 3, it is characterized in that: bottom described stator, on diversion seat 1, uniform intervals is provided with 7 spatial warping stators 2; The medium position of described spatial warping stator 2 inner ring surface is provided with stator inner ring surface guide ring 3; Bottom the bottom 4 footprint edge stator on described spatial warping vane inlet limit, diversion seat arcuate surface 5 forms spiral and to go in ring curve, distortion 180 °; The top 6 footprint edge stator inner ring surface guide ring inner ring surface 7 on spatial warping vane inlet limit forms plane and to go in ring curve, distortion 180 °.
The single runner of the spatial guide blade of this multistage sectional centrifugal pump is regular helically twisted runner, comprising: spiral collection section 8 and spiral diffuser 9.
Claims (1)
1. the spatial guide blade of a multistage sectional centrifugal pump is made up of diversion seat, spatial warping stator, stator inner ring surface guide ring bottom stator, it is characterized in that: bottom described stator, on diversion seat, uniform intervals is provided with more than 2 spatial warping stators; In the middle part of described spatial warping stator inner ring surface, stator inner ring surface guide ring is installed; Bottom the bottom trace edge stator on described spatial warping vane inlet limit, diversion seat arcuate surface forms spiral and to go in ring curve, distortion 180 °; The top trace edge stator inner ring surface guide ring inner ring surface on described spatial warping vane inlet limit forms plane and to go in ring curve, distortion 180 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420508221.5U CN204213050U (en) | 2014-09-04 | 2014-09-04 | A kind of spatial guide blade of multistage sectional centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420508221.5U CN204213050U (en) | 2014-09-04 | 2014-09-04 | A kind of spatial guide blade of multistage sectional centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204213050U true CN204213050U (en) | 2015-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420508221.5U Expired - Fee Related CN204213050U (en) | 2014-09-04 | 2014-09-04 | A kind of spatial guide blade of multistage sectional centrifugal pump |
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| Country | Link |
|---|---|
| CN (1) | CN204213050U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107339259A (en) * | 2017-04-11 | 2017-11-10 | 宁波方太厨具有限公司 | A kind of multi-wing centrifugal fan |
-
2014
- 2014-09-04 CN CN201420508221.5U patent/CN204213050U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107339259A (en) * | 2017-04-11 | 2017-11-10 | 宁波方太厨具有限公司 | A kind of multi-wing centrifugal fan |
| CN107339259B (en) * | 2017-04-11 | 2023-09-15 | 宁波方太厨具有限公司 | Multi-wing centrifugal fan |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150318 Termination date: 20180904 |