CN205001205U - Multistage section of thick bamboo pocket type centrifugal pump of high efficiency high pressure - Google Patents
Multistage section of thick bamboo pocket type centrifugal pump of high efficiency high pressure Download PDFInfo
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- CN205001205U CN205001205U CN201520607495.4U CN201520607495U CN205001205U CN 205001205 U CN205001205 U CN 205001205U CN 201520607495 U CN201520607495 U CN 201520607495U CN 205001205 U CN205001205 U CN 205001205U
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- impeller
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- axle
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Abstract
The utility model discloses a multistage section of thick bamboo pocket type centrifugal pump of high efficiency high pressure, including the pump body, run through the axle in the pump body and overlap and arrange epaxial impeller in, the impeller is provided with two at least, medium import and medium export have been seted up respectively to the both ends of the pump body, axis that the medium advances, exports with the axis of axle is perpendicular, pump body inboard is provided with the stator, the blade of impeller both sides presents in the hope of being improved respectively, backward sets up, the medium enters into the stator behind the impeller, the stator includes that the cross -section is circular shape stator body, and connect in the guide blade of stator body border is adjacent the runner that forms between the guide blade reaches dorsad with the forward of stator body, and the surface all communicates. The utility model discloses the open runner formula stator of well adoption, overflow regional whole visible, easily the casting with polish, great improvement the efficiency of pump.
Description
Technical field
The utility model relates to a kind of high-pressure multi-stage tubular-bag tyep centrifugal pump, is particularly useful for the charging of petrochemical industry hydrogenation and the purposes high pressure centrifugal pumps such as Jiao, steel mill's de-scaling, desalination of sea water, boiler feed water are cut in delay.
Background technique
Multistage pump is exactly the simple series connection of a lot of single-stage pump, combines.His output hydraulic pressure can be very large.The one of centrifugal pump, be also rely on impeller be rotated in acquisition centrifugal force, thus material.Treat that gas density reaches the operating range of oil-sealed rotary pump and is drawn out of, thus obtain high vacuum gradually.Multistage pump is by the change of pump chamber to realize air-breathing, compression and exhaust, and therefore it is can the centrifugal pump of capacity.
Existing multistage centrifugal pump mainly contains mono-hull sectional type multi-stage pump, opening volute type multistage pump in level, tubular-bag tyep multistage pump, and these multistage pumps also exist different problems respectively, as mono-hull sectional type multi-stage pump, interior pressure is directly born in its stage casing, in intersegmental sealing surface easily to leak and Security is poor, limit the use pressure and temperature of this kind of structure multistage pump.In addition, mono-hull limits, and need dismantle pipeline during field maintenance, engineering time is longer, and impact is produced.Opening volute type multistage pump in level, its pump housing and pump cover moulding are complicated, casting difficulty, the pump housing and pump cover processing difficulties, in open surface accuracy requirement high, therefore Economy is short of to some extent.Open face sealability in addition between the pump housing and pump cover limited, be only limitted to normal temperature and the use of mesolow operating mode.And tubular-bag tyep multistage pump is applicable to high temperature and high pressure condition, inner housing is the multistage pump of sectional type stator, and its stator generally adopts positive and negative blade to form, and in guide vane outlet and return guide vane ingress, because the uneven participant of pressure distribution produces whirlpool, lowers efficiency; Due to the existence of stator front shroud, be not easy runner of polishing, also can lower efficiency.Inner housing is the multistage pump of middle opening volute type, and face of opening in its inner pump requires high, processing difficulties; Because structure is present, during repair demolition, need the drive end from cylindrical shell and the dismounting of anti-drive end two sides, add the time changing core bag.
Model utility content
In view of the defect that above-mentioned prior art exists, the purpose of this utility model proposes a kind of high efficiency high-pressure multi-stage tubular-bag tyep centrifugal pump.
The purpose of this utility model, will be achieved by the following technical programs:
High efficiency high-pressure multi-stage tubular-bag tyep centrifugal pump, comprise the pump housing, through the axle in the pump housing and the impeller that is placed on axle, described impeller is at least provided with two, the two ends of the described pump housing offer medium entrance and media outlet respectively, described medium enters, the axis of outlet and the axes normal of described axle, stator is provided with inside the described pump housing, the blade of described impeller both sides is just respectively, reverse setting, described medium enters into stator after impeller, it is circular stator body that described stator comprises cross section, and be connected to the guide vane of described stator body border, the forward of the runner formed between adjacent described guide vane and stator body and dorsad surface are all communicated with.
Preferably, the guide vane of described stator body forward is half arrow sheet, and by the border of stator body, helically emitting shape is to external diffusion, and described stator body guide vane is dorsad half arrow, by stator body center helically emitting shape spread to the external boundary of stator body.
The utility model gives prominence to effect: adopt open type flow channel type guide blade, overcurrent region is all visible, is easy to casting and polishing, improves the efficiency of pump greatly.
Below just accompanying drawing in conjunction with the embodiments, is described in further detail embodiment of the present utility model, is easier to understand, grasp to make technical solutions of the utility model.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is guide vane structure schematic diagram of the present utility model, now illustrates the forward blade of stator.
Fig. 3 is the structural representation of the utility model stator dorsad.
Embodiment
As shown in Figure 1, the utility model provides a kind of high efficiency high-pressure multi-stage tubular-bag tyep centrifugal pump, comprise the pump housing 5, through the axle 1 in the pump housing 5 and the impeller that is placed on axle 1, described impeller is at least provided with two, be respectively first stage impeller 6.1 and intermediate impeller 6.2, the blade of impeller both sides is respectively in forward and reverse setting.The side of described pump is provided with pump cover 12.Core bag in the utility model is the core bag that can overall loose core, and is specifically made up of axle 1, inboard bearing parts 2, driving side mechanical sealing parts 3, suction casing 4, impeller, multistage stator 7, multistage stage casing, pump cover 12, non-drive side mechanical sealing parts 15 and non-drive side bearing part 16.During assembling, first core packaging is joined, in the overall loading pump housing 1, by metal wound gasket 17.1 and mating face seal, then carried out last fixing by screw bolt and nut.
The two ends of the described pump housing offer medium entrance 5.1 and media outlet 5.2 respectively, the axis of described medium inlet/outlet and the axes normal of described axle 1.Also be provided with stator 7 in the described pump housing, described medium enters into stator after impeller.
Composition graphs 2 is with shown in Fig. 3, and it is circular stator body 71 that described stator comprises cross section, and is connected to the guide vane of described stator body border, and the forward of the runner formed between adjacent described guide vane and stator body and dorsad surface are all communicated with.
Concrete, the guide vane cross section of described stator body 71 forward is half arrow sheet, and by stator body 71 border helically emitting shape to external diffusion.Described stator body 71 guide vane cross section dorsad is also half arrow sheet, by stator body center helically emitting shape spread to the external boundary of stator body, the media outlet end of forward guide vane 73 is communicated by a path with the medium entrance end of guide vane 75 dorsad, make stator body forward and dorsad between runner rounding off UNICOM, composition graphs 2, Fig. 3, the passage 72 of forward blade communicates with the passage 76 of blade dorsad, compared with prior art, medium is required no by forward and conversion dorsad.
Flowing medium, from flow passage alone, does not cross in stator with the medium in other runner, improves the efficiency of pump; And both sides are all visible, be easy to manufacturing, be easy to polishing.
Below set forth lower working principle of the present utility model:
During pump work, medium enters from medium entrance 5.1, first stage impeller 6.1 is entered by suction side 4 water conservancy diversion, stator 7 is entered through first stage impeller 6.1 pressurization of doing work, then next stage impeller is arrived, through pressurizeing step by step, finally being entered after the pump housing arrives media outlet 5.2 by final stage stator and entering follow-up process pipe.Because this working principle is same as the prior art, then this no longer describes in detail.
The utility model still has numerous embodiments, all employing equivalents or equivalent transformation and all technological schemes formed, and all drops within protection domain of the present utility model.
Claims (2)
1. high efficiency high-pressure multi-stage tubular-bag tyep centrifugal pump, comprise the pump housing, through the axle in the pump housing and the impeller that is placed on axle, described impeller is at least provided with two, the two ends of the described pump housing offer medium entrance and media outlet respectively, described medium enters, the axis of outlet and the axes normal of described axle, stator is provided with inside the described pump housing, the blade of described impeller both sides is just respectively, reverse setting, described medium enters into stator after impeller, it is characterized in that: it is circular stator body that described stator comprises cross section, and be connected to the guide vane of described stator body border, the forward of the runner formed between adjacent described guide vane and stator body and dorsad surface are all communicated with.
2. high efficiency high-pressure multi-stage tubular-bag tyep centrifugal pump according to claim 1, it is characterized in that: the guide vane of described stator body forward is half arrow sheet, and by stator body border helically emitting shape to external diffusion, described stator body guide vane is dorsad half arrow, by stator body center helically emitting shape spread to the external boundary of stator body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520607495.4U CN205001205U (en) | 2015-08-13 | 2015-08-13 | Multistage section of thick bamboo pocket type centrifugal pump of high efficiency high pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520607495.4U CN205001205U (en) | 2015-08-13 | 2015-08-13 | Multistage section of thick bamboo pocket type centrifugal pump of high efficiency high pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205001205U true CN205001205U (en) | 2016-01-27 |
Family
ID=55158096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520607495.4U Expired - Fee Related CN205001205U (en) | 2015-08-13 | 2015-08-13 | Multistage section of thick bamboo pocket type centrifugal pump of high efficiency high pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205001205U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105065284A (en) * | 2015-08-13 | 2015-11-18 | 福斯流体控制（苏州）有限公司 | Efficient and high-pressure multi-stage barrel bag type centrifugal pump |
-
2015
- 2015-08-13 CN CN201520607495.4U patent/CN205001205U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105065284A (en) * | 2015-08-13 | 2015-11-18 | 福斯流体控制（苏州）有限公司 | Efficient and high-pressure multi-stage barrel bag type centrifugal pump |
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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: 20160127 Termination date: 20210813 |