CN206246409U - The centrifugal multistage pump multiple centrifugal pump of half-opened impeller and the low discharge ultrahigh pump lift using the impeller - Google Patents
The centrifugal multistage pump multiple centrifugal pump of half-opened impeller and the low discharge ultrahigh pump lift using the impeller Download PDFInfo
- Publication number
- CN206246409U CN206246409U CN201621190440.9U CN201621190440U CN206246409U CN 206246409 U CN206246409 U CN 206246409U CN 201621190440 U CN201621190440 U CN 201621190440U CN 206246409 U CN206246409 U CN 206246409U
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- China
- Prior art keywords
- pump
- impeller
- blade
- centrifugal
- rotating shaft
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- 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
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Abstract
The utility model discloses the centrifugal multistage pump multiple centrifugal pump of a kind of half-opened impeller and the low discharge ultrahigh pump lift using half-opened impeller, including housing, entrance and exit on the housing is set, rotating shaft is provided with the housing, gap is provided with half-opened impeller in the rotating shaft, the half-opened impeller is respectively provided on two sides with stator and middle segment, the stator and middle segment form an impeller assembly by the both sides that bearing pin is fixed on the half-opened impeller, and the impeller assembly arrangement is socketed in the rotating shaft.The beneficial effects of the utility model are mainly reflected in：With low discharge, high-lift waterpower, can also be run under 2 grades of rotating speeds；Half-opened impeller of the present utility model is employed, working condition requirement is disclosure satisfy that and pumped (conveying) medium there can be air content higher；Equipped with integrated mechanical sealing and rolling bearing, it is not necessary to external auxiliary lubricating system or component cooling water, the utility model is used to replace plunger displacement pump, and stable performance is vibrated low.
Description
Technical field
The utility model is related to pump class, specifically, more particularly to a kind of centrifugal multistage pump multiple centrifugal pump of low discharge ultrahigh pump lift, with
And its half-opened impeller for using.
Background technology
The centrifugal force that centrifugal pump is produced when referring to and being rotated by impeller conveys the pump of liquid, is rotated using impeller and sends out water
Raw centrifugal motion carrys out work.Water pump is before activation, it is necessary to makes in pump case and suction hose full of water, then starts motor, makes pump
Axle impeller and water do high speed rotary motion, and water occurs centrifugal motion, impeller outer edge is thrown toward, through the runner stream of volute pump case
Enter the pressure pipe road of water pump.
The occasion of nuclear power station low discharge ultrahigh pump lift was all originally to use plunger displacement pump abroad, but plunger pump vibration and fortune
Row integrity problem is continuous.
Utility model content
The purpose of this utility model is to overcome the shortcomings of that prior art is present, there is provided the rill that a kind of suitable nuclear power station is used
Measure the centrifugal multistage pump multiple centrifugal pump of ultrahigh pump lift, and its half-opened impeller for using.
The purpose of this utility model is achieved through the following technical solutions：
The utility model discloses a kind of half-opened impeller, including wheel hub, and the matrix for radially extending, the base
The surface of body is provided with blade, and the blade includes the first blade and the second blade, and the length of first blade is the base
The outer peripheral face of body to the wheel hub distance, the length of second blade less than first blade length, described first
Blade and the second blade stagger are distributed on the surface of described matrix；The height of the blade is from the wheel hub to described matrix
It is to set from high to low on the direction of outer peripheral face；It is provided between first blade and the second blade through the flat of described matrix
Weighing apparatus.
The utility model further discloses a kind of multistage centrifugal of the low discharge ultrahigh pump lift using above-mentioned half-opened impeller
Pump, including housing, set entrance and exit on the housing, and rotating shaft, gap in the rotating shaft are provided with the housing
It is provided with half-opened impeller, the half-opened impeller is respectively provided on two sides with stator and middle segment, and the stator and middle segment pass through
The both sides that bearing pin is fixed on the half-opened impeller form an impeller assembly, and the impeller assembly arrangement is socketed in the rotating shaft
On.
Preferably, the stator is intended for the side of the half-opened impeller and is provided with runner, and the runner is half-open with described
The blade passage conducting of formula impeller.
Preferably, the stator side of the impeller assembly that the middle segment is abutted against is provided with spiral guiding plate.
Preferably, the entrance and exit is fixed on the housing by flange.
Preferably, the half-opened impeller is arranged in the rotating shaft by spline.
Preferably, the input side of the rotating shaft is provided with rolling bearing, and the output end side of the rotating shaft is provided with corner connection
Touch ball bearing.
Preferably, there is elastomeric seal, described elastomeric seal is into m types between adjacent impeller assembly.
Preferably, the output end side of the rotating shaft is additionally provided with balancing frame, and the housing is provided with an import positioned at shell
In vitro, import is located at the balance pipe in the balancing frame.
Preferably, the two ends of the rotating shaft are stretched out at the housing and are provided with mechanical seal.
The beneficial effects of the utility model are mainly reflected in：With low discharge, high-lift waterpower, under 2 grades of rotating speeds also
Can run；Half-opened impeller of the present utility model is employed, working condition requirement is disclosure satisfy that and pumped (conveying) medium there can be higher containing
Tolerance；Equipped with integrated mechanical sealing and rolling bearing, it is not necessary to external auxiliary lubricating system or component cooling water, this practicality
It is new for replacing plunger displacement pump, stable performance is vibrated low.
Brief description of the drawings
Technical solutions of the utility model are described further below in conjunction with the accompanying drawings：
Fig. 1：The schematic perspective view of the utility model half-opened impeller；
Fig. 2：The front view of the utility model half-opened impeller；
Fig. 3：The right view of the utility model half-opened impeller；
Fig. 4：The schematic perspective view of the utility model stator；
Fig. 5：The schematic perspective view of segment in the utility model；
Fig. 6：The schematic diagram of the utility model elastomeric seal；
Fig. 7：The schematic perspective view of the utility model centrifugal multistage pump multiple centrifugal pump.
Specific embodiment
The utility model is described in detail below with reference to specific embodiment shown in the drawings.But these embodiment party
Formula is not limited to the utility model, structure that one of ordinary skill in the art is made according to these implementation methods, method or
Conversion functionally is all contained in protection domain of the present utility model.
As shown in Figures 1 to 3, the utility model discloses a kind of half-opened impeller, including wheel hub 111, and radially
The matrix 112 of extension, the surface of described matrix 112 is provided with blade, and the blade includes the first blade 113 and the second blade
114, the length of first blade 113 is the outer peripheral face of described matrix 112 to the distance of the wheel hub 111, second leaf
The length of piece 114 is less than the length of first blade 113, and the blade 114 of first blade 113 and second is uniform staggered with institute
State on the surface of matrix 112；The height of the blade is from the wheel hub 111 to being on the direction of the outer peripheral face of described matrix 112
Set from high to low；The balance pipe through described matrix 112 is provided between the blade 114 of first blade 113 and second
115.The deviated splitter vane advantage of half-opened impeller is the cavitation resistive property for effectively improving pump, and principle is by the radial direction of partial blade
Size shortens（In impeller inlet side position, external diameter keeps constant）, the area of impeller eye in a disguised form is increased, reduce inflow leaf
Take turns the velocity of medium of eye.According to the law of the conservation of energy, in closed system, the summation of pressure energy and the speed energy of fluid is constant
's.Velocity of medium increases, and pressure energy is smaller；The smaller easier cavitation erosion of pressure energy, so the design of the utility model deviated splitter vane is relative
Than general equal length blade design, cavitation resistive property is more preferable.
As shown in fig. 7, the utility model further discloses a kind of low discharge ultrahigh pump lift using above-mentioned half-opened impeller
Centrifugal multistage pump multiple centrifugal pump, including housing 1, the entrance 2 being arranged on the housing 1 and outlet 3, the entrance 2 and outlet 3 pass through method
Blue 4 are fixed on the housing 1.Rotating shaft 5 is provided with the housing 1, gap is provided with half-opened impeller 11 in the rotating shaft 5,
The half-opened impeller 11 is arranged in the rotating shaft 5 by spline 14.The input side of the rotating shaft 5 is provided with rolling bearing
7.The output end side of the rotating shaft 5 is provided with angular contact ball bearing 8., the output end side of the rotating shaft 5 is additionally provided with balancing frame 9,
The housing 1 is provided with an import positioned at the balance pipe 10 that housing 1 is outer, import is in the balancing frame 9.The rotating shaft 5
Two ends stretch out mechanical seal 6 be provided with the housing 1.Employ impeller balance hole and balancing frame 9 carrys out balancing axial thrust, greatly
Axial force during pump operation is reduced, special thrust bearing can not be used, and use angular contact ball bearing, facilitate spare part
Buying and reduction consumable accessory maintenance cost, it is not necessary to which extra forced feed lubrication petrol station reduces pump group purchase cost.Supporting use
Mechanical seal, service life is longer, it is not necessary to which external flushing water, stable equipment operation is higher.In addition, axle of the present utility model
Case outer surface arranging multiplayer radiating rib plate is held, cooling bearing case is carried out by air-cooled, it is not necessary to external bearing housing cooling water.
In the utility model, the half-opened impeller 11 is respectively provided on two sides with stator 12 and middle segment 13, the stator
12 and middle segment 13 by bearing pin be fixed on the half-opened impeller 11 both sides formed an impeller assembly, the impeller assembly
Arrangement is socketed in the rotating shaft 5.With reference to shown in Fig. 4, the side that the stator 12 is intended for the half-opened impeller 11 is provided with
Runner 121, the runner 121 is turned on the blade passage of the half-opened impeller.With reference to shown in Fig. 5, the middle segment 13 is supported
The side of stator 12 by adjacent impeller assembly is provided with spiral guiding plate 131.
The utility model centrifugal multistage pump multiple centrifugal pump employs half-opened impeller so that the diameter of axle can increase, relative to double shrouded wheel
The diameter of axle can be thicker, and the rigidity of rotor is more preferably；Due to no impeller and pump housing choma, the axial length of rotor is also compared to enclosed
Impeller is shorter, and the span of bearing is shorter, and rotor stability is higher.Prior art has using the design of double shrouded wheel, but enclosed leaf
Take turns that diffusion in runner is more serious, impeller pumped (conveying) medium reflux ratio is more serious, and half-opened impeller has very high raising
The features such as journey coefficient and the rill rating curve little with changes in flow rate temperature, and with the positive slope ascent stage.This
Utility model centrifugal multistage pump multiple centrifugal pump only impeller and housing uses casting, and other pressure-bearing parts are processed system using forging blank
Make, cylinder with import and export flange ability bolt connection, it is to avoid the inservice inspection of the weld of nuclear power station（RT）, reduce equipment and exist
RT inspections during labour, reduce maintenance cost.The pressure-containing members such as cylinder are forging, are also convenient for carrying out various nondestructive testings,
The intensity and material isotropic of forging are more stable.
With reference to shown in Fig. 6 and Fig. 7, there is elastomeric seal, described high resiliency sealing between adjacent impeller assembly
Part is into m types.Prior art typically uses O-ring or metal wound gasket, is disposable sealing, and each pump disintegrates and is both needed to change, its
It is consumable accessory, and processing dimension error and fitted position error cannot be compensated.And the high resiliency that is used in the utility model is close
Sealing can not only play the function of stage casing interstage seal, additionally it is possible to supplement stage casing part by the deformation of distinctive m types structure
Processing dimension error and fitted position error, and it uses stainless steel, is not belonging to the consumable accessory of centrifugal pump, can be repeatedly
Dismounting is used, and saves user cost.
After the utility model uses above-mentioned architectural feature, the performance parameter that can be reached：Flow：11.36-42.02m3/ h,
Lift：1949.4-1692m, design temperature：200℃；Design point efficiency：41.8%, design point flow：34.07 m3/ h, lift：
1801.3m.NPSHr：Design point NPSHr：4.6m, maximum flow point NPSHr：6.2m.
It should be understood that, although the present specification is described in terms of embodiments, but not each implementation method only includes one
Individual independent technical scheme, this narrating mode of specification is only that for clarity, those skilled in the art will should say
Used as an entirety, technical scheme in each implementation method can also be through appropriately combined, and forming those skilled in the art can for bright book
With the other embodiment for understanding.
The a series of tool described in detail only for feasibility implementation method of the present utility model of those listed above
Body illustrates that they are simultaneously not used to limit protection domain of the present utility model, all to be made without departing from the utility model skill spirit
Equivalent implementations or change should be included within protection domain of the present utility model.
Claims (10)
1. a kind of half-opened impeller, it is characterised in that：Including wheel hub（111）, and the matrix for radially extending（112）, institute
State matrix（112）Surface be provided with blade, the blade includes the first blade（113）With the second blade（114）, described first
Blade（113）Length be described matrix（112）Outer peripheral face to the wheel hub（111）Distance, second blade（114）
Length be less than first blade（113）Length, first blade（113）With the second blade（114）It is uniform staggered with
Described matrix（112）Surface on；The height of the blade is from the wheel hub（111）To described matrix（112）Outer peripheral face
It is to set from high to low on direction；First blade（113）With the second blade（114）Between be provided with through described matrix
（112）Balance pipe（115）.
2. a kind of usage right requires the centrifugal multistage pump multiple centrifugal pump of the low discharge ultrahigh pump lift of the half-opened impeller described in 1, and its feature exists
In：Including housing（1）, it is arranged on the housing（1）On entrance（2）And outlet（3）, the housing（1）Inside it is provided with rotating shaft
（5）, the rotating shaft（5）Upper gap is provided with half-opened impeller（11）, the half-opened impeller（11）Be respectively provided on two sides with stator
（12）With middle segment（13）, the stator（12）With middle segment（13）The half-opened impeller is fixed on by bearing pin（11）Two
Side forms an impeller assembly, and the impeller assembly arrangement is socketed in the rotating shaft（5）On.
3. the centrifugal multistage pump multiple centrifugal pump of low discharge ultrahigh pump lift according to claim 2, it is characterised in that：The stator（12）Face
To in the half-opened impeller（11）Side be provided with runner（121）, the runner（121）With the blade of the half-opened impeller
Runner is turned on.
4. the centrifugal multistage pump multiple centrifugal pump of low discharge ultrahigh pump lift according to claim 3, it is characterised in that：The middle segment（13）
The stator of the impeller assembly for abutting against（12）Side is provided with spiral guiding plate（131）.
5. according to the centrifugal multistage pump multiple centrifugal pump of any described low discharge ultrahigh pump lifts of claim 2-4, it is characterised in that：The entrance
（2）And outlet（3）By flange（4）It is fixed on the housing（1）On.
6. according to the centrifugal multistage pump multiple centrifugal pump of any described low discharge ultrahigh pump lifts of claim 2-4, it is characterised in that：It is described half-open
Formula impeller（11）By spline（14）It is arranged on the rotating shaft（5）On.
7. according to the centrifugal multistage pump multiple centrifugal pump of any described low discharge ultrahigh pump lifts of claim 2-4, it is characterised in that：The rotating shaft
（5）Input side be provided with rolling bearing（7）, the rotating shaft（5）Output end side be provided with angular contact ball bearing（8）.
8. according to the centrifugal multistage pump multiple centrifugal pump of any described low discharge ultrahigh pump lifts of claim 2-4, it is characterised in that：Adjacent leaf
There is elastomeric seal, described elastomeric seal is into m types between wheel assembly.
9. according to the centrifugal multistage pump multiple centrifugal pump of any described low discharge ultrahigh pump lifts of claim 2-4, it is characterised in that：The rotating shaft
（5）Output end side be additionally provided with balancing frame（9）, the housing（1）An import is provided with positioned at housing（1）Outward, import position
In the balancing frame（9）Interior balance pipe（10）.
10. according to the centrifugal multistage pump multiple centrifugal pump of any described low discharge ultrahigh pump lifts of claim 2-4, it is characterised in that：Described turn
Axle（5）Two ends stretch out the housing（1）Place is provided with mechanical seal（6）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621190440.9U CN206246409U (en) | 2016-10-28 | 2016-10-28 | The centrifugal multistage pump multiple centrifugal pump of half-opened impeller and the low discharge ultrahigh pump lift using the impeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621190440.9U CN206246409U (en) | 2016-10-28 | 2016-10-28 | The centrifugal multistage pump multiple centrifugal pump of half-opened impeller and the low discharge ultrahigh pump lift using the impeller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206246409U true CN206246409U (en) | 2017-06-13 |
Family
ID=59000489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621190440.9U Expired - Fee Related CN206246409U (en) | 2016-10-28 | 2016-10-28 | The centrifugal multistage pump multiple centrifugal pump of half-opened impeller and the low discharge ultrahigh pump lift using the impeller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206246409U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106438457A (en) * | 2016-10-28 | 2017-02-22 | 福斯流体控制（苏州）有限公司 | Half-opened impeller and low-flow super high-lift multiple-stage centrifugal pump with same |
-
2016
- 2016-10-28 CN CN201621190440.9U patent/CN206246409U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106438457A (en) * | 2016-10-28 | 2017-02-22 | 福斯流体控制（苏州）有限公司 | Half-opened impeller and low-flow super high-lift multiple-stage centrifugal pump with same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20170613 Termination date: 20211028 |