CN105697382A - Radially split double-shell multiple-stage centrifugal pump - Google Patents
Radially split double-shell multiple-stage centrifugal pump Download PDFInfo
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- CN105697382A CN105697382A CN201410709625.5A CN201410709625A CN105697382A CN 105697382 A CN105697382 A CN 105697382A CN 201410709625 A CN201410709625 A CN 201410709625A CN 105697382 A CN105697382 A CN 105697382A
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Abstract
The invention discloses a radially split double-shell multiple-stage centrifugal pump. The centrifugal pump comprises a pump barrel, a pump cover, a core cladding, a balance pipe and a bearing part, wherein an outlet pipe and an inlet pipe are arranged on the pump barrel; the core cladding comprises a suction section, a middle section, an intermediate section, a radial guide blade, a first stage impeller, a secondary stage impeller and an axis, the core cladding is radially split and can be put in or pumped out from one end of the pump as a whole; the first stage impeller is a double-suction impeller; the secondary stage impeller is a single-suction impeller. The pump in the structure disclosed by the invention is compact, convenient to repair, good in cavitation property and high in reliability, the axial force is automatic balancing.
Description
Technical field
The present invention relates to a kind of multistage pump, be specifically related to a kind of radially subdivision Double-casing multi-stage centrifugal pump。
Background technology
In multistage pump, first stage impeller double suction, secondary impeller are arranged symmetrically with the cavitation performance that can improve pump automatic balancing rotor axial force。
At present, the feature technology that the centrifugal multistage pump multiple centrifugal pump of axial subdivision has realized first stage impeller double suction, secondary impeller is arranged symmetrically with, but the housing of this type of pump has that molding is complicated, be easily generated defect, processing difficulties, the shortcoming such as involve great expense。
It addition, radially subdivision centrifugal multistage pump multiple centrifugal pump typically requires and improves pump cavitation performance by installing inducer additional。
Furthermore, some mono-hull radially subdivision centrifugal multistage pump multiple centrifugal pump also to pass through to realize impeller in hull outside connection " commutation runner " and be arranged symmetrically with, this centrifugal multistage pump multiple centrifugal pump complex contour, maintenance difficulty, and sections inter-stage exists potential leakage probability。
Summary of the invention
In order to solve above-mentioned technical problem, the present invention is thus providing a kind of first-stage double-absorption, secondary single-suction (single-in let) impeller to be arranged symmetrically with radially subdivision Double-casing multi-stage centrifugal pump。
For reaching above-mentioned purpose, technical scheme is as follows:
A kind of radially subdivision Double-casing multi-stage centrifugal pump, described centrifugal pump is made up of pump barrel body, pump cover, core bag, balance pipe, parts of bearings, described pump barrel body is provided with outlet and inlet tube, described core bag is made up of suction casing, stage casing, interlude, radial vane, first stage impeller, secondary impeller, axle, described core bag is radial direction subdivision, overall can loading from one end of pump or extract out, described first stage impeller is double-entry impeller, and described secondary impeller is single-suction (single-in let) impeller。
In a preferred embodiment of the invention, described secondary impeller includes the first single-suction (single-in let) impeller and the second single-suction (single-in let) impeller, described first single-suction (single-in let) impeller and the second single-suction (single-in let) impeller reversed arrangement on axle。
In a preferred embodiment of the invention, described radial vane includes the first radial vane and the second radial vane, described first radial vane and the second radial vane reversed arrangement。
In a preferred embodiment of the invention, described suction casing is synthesized by the first suction casing and second suction casing two parts, have the first cavity in described first suction casing, in described second suction casing, have the second cavity and the 3rd runner, the entrance connection of described 3rd runner and the first single-suction (single-in let) impeller。
In a preferred embodiment of the invention, described stage casing includes the first stage casing and the second stage casing, described first stage casing and the second stage casing reversed arrangement。
In a preferred embodiment of the invention, described interlude is between the first stage casing and the second stage casing, described interlude is provided with first flow and the second runner, and the entrance connection of described first flow and the second single-suction (single-in let) impeller, described second runner connects with outlet。
In a preferred embodiment of the invention, described centrifugal pump is additionally provided with balance pipe。
By technique scheme, the invention has the beneficial effects as follows:
The pump outward appearance of present configuration is clean and tidy, and maintenance is convenient, and cavitation performance is good, axial force automatic balancing, and reliability is high。And, meet the later stage core is wrapped single parts repair, the fine setting of the hydraulic performance such as replacing。
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is only embodiments of the invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings。
Fig. 1 is the structural representation of the present invention。
Detailed description of the invention
For the technological means making the present invention realize, creation characteristic, reach purpose and effect and be easy to understand, below in conjunction with being specifically illustrating, the present invention is expanded on further。
Referring to Fig. 1, a kind of radially subdivision Double-casing multi-stage centrifugal pump provided by the invention, it mainly includes a cylinder 100, is provided with the outlet 110 and inlet tube 120 that connect with pump barrel body 100 at pump barrel body 100 outer surface, is provided with pump cover 140 in cylinder 100 side。
Outside medium can be input in pump barrel body 100 by inlet tube 120, and outlet 110 is for by the medium output after work in pump barrel body 100。
Be provided with in pump barrel body 100 can the overall core bag loaded and extract out, core bag adopts radially subdivision structure, and it overall can load from one end of pump barrel body 100 or extract out；Core bag is specifically made up of suction casing, stage casing, interlude, radial vane, first stage impeller 420, secondary impeller 410, axle 410。
Axle 410 crosses pump barrel body 100, and it can rotate in pump barrel body 100, and axle 410 passes through inboard bearing parts 411 and non-drive side parts of bearings 412 support rotary at two ends；
First stage impeller 420 is double-entry impeller, and secondary impeller 410 is single-suction (single-in let) impeller, and first stage impeller 420 and secondary impeller 410 are arranged on axle 410。
Secondary impeller 410 includes the first single-suction (single-in let) impeller 430 and the second single-suction (single-in let) impeller 440, the first single-suction (single-in let) impeller and 430 second single-suction (single-in let) impeller 440 differential concatenations and is arranged on axle 410。
Suction casing, it includes the first suction casing 610 and the second suction casing 620, the first cavity 310 is had in first suction casing 610, second suction casing 620 has the second cavity 320, first cavity 310 connects with inlet tube 120 respectively with the second cavity 320, medium is transported in the first cavity 310 and the second cavity 320 by inlet tube 120, and first stage impeller 420 is positioned between the first suction casing 610 and the second suction casing 620, and the medium in the first cavity 310 and the second cavity 320 can be done work by first stage impeller 420；It is provided with the 3rd runner 421 between first-stage double suction impeller 420 and the entrance of the first single-suction (single-in let) impeller 430。
Stage casing includes the first stage casing 521 and the second stage casing 531, and radial vane includes the first radial vane 522 and the second radial vane 532；
In first stage casing 521, first radial vane 522 is installed, with the first single-suction (single-in let) impeller 430 auxiliary work；
In second stage casing 531, second radial vane 532 is installed, with the second single-suction (single-in let) impeller 440 auxiliary work；
Interlude 510, it is arranged between the first stage casing 521 and the second stage casing 531, it is the conveying hinge of the first single-suction (single-in let) impeller 430 and the second single-suction (single-in let) impeller 440, interlude 510 is provided with first flow 511 and the second runner 512, first flow 511 connects with the entrance of the second single-suction (single-in let) impeller 440, and the second runner 512 connects with outlet 110。
The specific works engineering of the present invention is presented herein below:
During work, medium respectively enters the first cavity 310 and the second cavity 320 by pump inlet pipe 120, the first stage impeller 420 then passed through between the first suction casing 610 and the second suction casing 620 does work, first stage impeller 420 by the medium after acting by being flowed into the entrance of the first single-suction (single-in let) impeller 430 to the 3rd runner 421, then through the first single-suction (single-in let) impeller 430 in the first stage casing 521 with and the first radial vane 521 coordinate acting；
Then the medium after acting is flowed in the first flow 511 of interlude 510, it is flowed into cavity 700 by first flow 511, arrive the entrance of the second single-suction (single-in let) impeller 440, then pass through the second single-suction (single-in let) impeller 440 in the second stage casing 531 and the second radial vane 532 coordinates acting, medium after acting is flowed in the second runner 512 of interlude 510, flows out finally by inlet tube 120。
Owing to first stage impeller 420 itself does not produce axial force, and the first single-suction (single-in let) impeller 430 of interlude 510 both sides and the second single-suction (single-in let) impeller 440 are when pump operation, the axial force that single impeller produces is directed to the import direction of this impeller, so the axial force that the first single-suction (single-in let) impeller 430 and the second single-suction (single-in let) impeller 440 produce also can balance mutually, so can save the bascule (such as balancing frame, balancing drum) of complexity, structurally improve the reliability of the type pump。
Balance pipe 130 it is additionally provided with outside pump barrel body 100, so can balanced residue axial force further。
The ultimate principle of the present invention and principal character and advantages of the present invention have more than been shown and described。Skilled person will appreciate that of the industry; the present invention is not restricted to the described embodiments; described in above-described embodiment and description is that principles of the invention is described; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements both fall within the claimed scope of the invention。Claimed scope is defined by appending claims and equivalent thereof。
Claims (7)
1. a radial direction subdivision Double-casing multi-stage centrifugal pump, described centrifugal pump is made up of pump barrel body, pump cover, core bag, balance pipe, parts of bearings, described pump barrel body is provided with outlet and inlet tube, described core bag is made up of suction casing, stage casing, interlude, radial vane, first stage impeller, secondary impeller, axle, it is characterized in that: described core bag is radially subdivision, overall can loading from one end of pump or extract out, described first stage impeller is double-entry impeller, and described secondary impeller is single-suction (single-in let) impeller。
2. a kind of radially subdivision Double-casing multi-stage centrifugal pump according to claim 1, it is characterised in that: described secondary impeller includes the first single-suction (single-in let) impeller and the second single-suction (single-in let) impeller, described first single-suction (single-in let) impeller and the second single-suction (single-in let) impeller reversed arrangement on axle。
3. a kind of radially subdivision Double-casing multi-stage centrifugal pump according to claim 1, it is characterised in that: described radial vane includes the first radial vane and the second radial vane, described first radial vane and the second radial vane reversed arrangement。
4. a kind of radially subdivision Double-casing multi-stage centrifugal pump according to claim 2, it is characterized in that: described suction casing is synthesized by the first suction casing and second suction casing two parts, the first cavity is had in described first suction casing, the second cavity and the 3rd runner is had, the entrance connection of described 3rd runner and the first single-suction (single-in let) impeller in described second suction casing。
5. a kind of radially subdivision Double-casing multi-stage centrifugal pump according to claim 1, it is characterised in that: described stage casing includes the first stage casing and the second stage casing, described first stage casing and the second stage casing reversed arrangement。
6. a kind of radially subdivision Double-casing multi-stage centrifugal pump according to claim 1 or 2 or 5, it is characterized in that: described interlude is between the first stage casing and the second stage casing, described interlude is provided with first flow and the second runner, the entrance connection of described first flow and the second single-suction (single-in let) impeller, described second runner connects with outlet。
7. a kind of radially subdivision Double-casing multi-stage centrifugal pump according to claim 1, it is characterised in that: described centrifugal pump is additionally provided with balance pipe。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410709625.5A CN105697382A (en) | 2014-11-28 | 2014-11-28 | Radially split double-shell multiple-stage centrifugal pump |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410709625.5A CN105697382A (en) | 2014-11-28 | 2014-11-28 | Radially split double-shell multiple-stage centrifugal pump |
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| CN105697382A true CN105697382A (en) | 2016-06-22 |
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| CN201410709625.5A Pending CN105697382A (en) | 2014-11-28 | 2014-11-28 | Radially split double-shell multiple-stage centrifugal pump |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105909526A (en) * | 2016-04-19 | 2016-08-31 | 湖南天奥星泵业有限公司 | Radial dissection two-end support type four-stage centrifugal pump |
| CN107542670A (en) * | 2017-09-27 | 2018-01-05 | 上海阿波罗机械股份有限公司 | Small pump and small pump pump group |
| CN107559206A (en) * | 2017-10-13 | 2018-01-09 | 嘉利特荏原泵业有限公司 | First-stage double-absorption structure Double-casing symmetrical expression radial direction subdivision centrifugal multistage pump multiple centrifugal pump |
| CN108412775A (en) * | 2018-04-13 | 2018-08-17 | 沈阳格瑞德泵业有限公司 | A kind of first-stage double-absorption inner core axial subdivision multistage double casing volute pump |
| CN111648967A (en) * | 2020-06-15 | 2020-09-11 | 长沙佳能通用泵业有限公司 | Self-balancing multistage pump four-volute chamber water outlet section |
| CN112628146A (en) * | 2020-12-31 | 2021-04-09 | 上海凯泉泵业（集团）有限公司 | Multistage double suction pump with vertical structure |
| EP3862567A1 (en) * | 2020-02-06 | 2021-08-11 | Curtiss-Wright Electro-Mechanical Corporation | Apparatus for transferring pressurized fluid in a back-to-back multi-stage pump |
| CN113417856A (en) * | 2021-08-02 | 2021-09-21 | 上海凯泉泵业（集团）有限公司 | High-pressure safety injection pump of water-water high-energy reactor third-generation nuclear power unit |
| CN114909293A (en) * | 2022-05-20 | 2022-08-16 | 宜昌市西峡泵业有限公司 | Double-suction high-lift balance type odd-level centrifugal pump and operation method |
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| CN204312359U (en) * | 2014-11-28 | 2015-05-06 | 上海凯泉泵业（集团）有限公司 | A kind of radial subdivision Double-casing multi-stage centrifugal pump |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105909526A (en) * | 2016-04-19 | 2016-08-31 | 湖南天奥星泵业有限公司 | Radial dissection two-end support type four-stage centrifugal pump |
| CN107542670A (en) * | 2017-09-27 | 2018-01-05 | 上海阿波罗机械股份有限公司 | Small pump and small pump pump group |
| CN107559206A (en) * | 2017-10-13 | 2018-01-09 | 嘉利特荏原泵业有限公司 | First-stage double-absorption structure Double-casing symmetrical expression radial direction subdivision centrifugal multistage pump multiple centrifugal pump |
| CN108412775A (en) * | 2018-04-13 | 2018-08-17 | 沈阳格瑞德泵业有限公司 | A kind of first-stage double-absorption inner core axial subdivision multistage double casing volute pump |
| EP3862567A1 (en) * | 2020-02-06 | 2021-08-11 | Curtiss-Wright Electro-Mechanical Corporation | Apparatus for transferring pressurized fluid in a back-to-back multi-stage pump |
| US11441577B2 (en) | 2020-02-06 | 2022-09-13 | Curtiss-Wright Electro-Mechanical Corporation | Apparatus for transferring pressurized fluid in a back-to-back multi-stage pump |
| CN111648967A (en) * | 2020-06-15 | 2020-09-11 | 长沙佳能通用泵业有限公司 | Self-balancing multistage pump four-volute chamber water outlet section |
| CN112628146A (en) * | 2020-12-31 | 2021-04-09 | 上海凯泉泵业（集团）有限公司 | Multistage double suction pump with vertical structure |
| CN113417856A (en) * | 2021-08-02 | 2021-09-21 | 上海凯泉泵业（集团）有限公司 | High-pressure safety injection pump of water-water high-energy reactor third-generation nuclear power unit |
| CN113417856B (en) * | 2021-08-02 | 2024-05-17 | 上海凯泉泵业（集团）有限公司 | High-pressure safety injection pump of third-generation nuclear power unit of water-water high-energy reactor |
| CN114909293A (en) * | 2022-05-20 | 2022-08-16 | 宜昌市西峡泵业有限公司 | Double-suction high-lift balance type odd-level centrifugal pump and operation method |
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Application publication date: 20160622 |