CN102261336B - Two-stage cantilever centrifugal pump - Google Patents

Two-stage cantilever centrifugal pump Download PDF

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Publication number
CN102261336B
CN102261336B CN201010185579.5A CN201010185579A CN102261336B CN 102261336 B CN102261336 B CN 102261336B CN 201010185579 A CN201010185579 A CN 201010185579A CN 102261336 B CN102261336 B CN 102261336B
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China
Prior art keywords
impeller
pump
stage
import
stage impeller
Prior art date
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CN201010185579.5A
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Chinese (zh)
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CN102261336A (en
Inventor
白书哲
宋锡梁
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沈阳启源工业泵制造有限公司
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Priority to CN201010185579.5A priority Critical patent/CN102261336B/en
Publication of CN102261336A publication Critical patent/CN102261336A/en
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Publication of CN102261336B publication Critical patent/CN102261336B/en

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Abstract

Two-stage cantilever centrifugal pump relates to the improvement of type horizontal cantilever centrifugal pump.The object of the invention is to provide the dried up pump of the two poles of the earth cantilever that a kind of efficiency is high, net positive suction head is low, lift is high.The present invention includes pump support, be disposed with first stage impeller, secondary impeller in the pump housing on the main shaft of pump support, be stator between first stage impeller and secondary impeller, its structure outline is provided with inducer on the main shaft of the inlet of the pump housing; The internal diameter of first stage impeller import is 125mm ~ 130mm, and the vane inlet angle of attack Δ β of first stage impeller is 12 ° ~ 15 °, and the vane inlet thickness of first stage impeller is 2.5mm ~ 3.5mm; The internal diameter of secondary impeller import is 85mm ~ 90mm.

Description

Two-stage cantilever centrifugal pump

Technical field:

The present invention relates to the improvement of type horizontal cantilever centrifugal pump.

Background technique:

Existing more advanced type horizontal cantilever centrifugal pump is the structure of the patent No. 02251115.6, but efficiency is still undesirable, and its efficiency is 56%, and net positive suction head is 1.5 ~ 1.6 meters, and uses under being only suitable for general occasion; But it is such as, under under the occasion to working condition harshness, requiring the occasion that efficiency is high, cavitation performance is good just inapplicable.

Summary of the invention:

The present invention is exactly for the problems referred to above, provides the dried up pump of the two poles of the earth cantilever that a kind of efficiency is high, net positive suction head is low, lift is high.

For achieving the above object, the present invention adopts following technological scheme, the present invention includes pump support, first stage impeller, secondary impeller is disposed with in the pump housing on the main shaft of pump support, be stator between first stage impeller and secondary impeller, its structure outline is provided with inducer on the main shaft of the inlet of the pump housing; The internal diameter of first stage impeller import is 125mm ~ 130mm, and the vane inlet angle of attack Δ β of first stage impeller is 12 ° ~ 15 °, and the vane inlet thickness of first stage impeller is 2.5mm ~ 3.5mm; The internal diameter of secondary impeller import is 85mm ~ 90mm.

Beneficial effect of the present invention:

Because the present invention is provided with inducer on the main shaft of the inlet of the pump housing; The internal diameter of first stage impeller import is 125mm ~ 130mm, and the inlet incidence angle Δ β of blade is 12 ° ~ 15 °, and the import thickness of blade is 2.5mm ~ 3.5mm; The internal diameter of secondary impeller import is 85mm ~ 90mm; The experiment proved that the efficiency of pump improves 6.5%, NPSH also reaches 1.1 meters, can meet harsher use engine request; And lift of pump is doubled.

Accompanying drawing illustrates:

Below in conjunction with the drawings and specific embodiments, the present invention will be further described:

Fig. 1 is structural representation of the present invention;

Fig. 2 is the plan view of first stage impeller;

Fig. 3 is the left view of first stage impeller;

Fig. 4 is the plan view of secondary impeller;

Fig. 5 is the performance graph of former patent application (patent No. 02251115.6);

Fig. 6 is the performance graph of patent of the present invention.

Embodiment:

As shown in the figure, the present invention includes pump support 6, be disposed with first stage impeller 2, secondary impeller 4 in the pump housing 5 on the main shaft 9 of pump support 6, is stator 3 between first stage impeller 2 and secondary impeller 4, and the main shaft 9 at import 7 place of the pump housing 5 is provided with inducer 1; The internal diameter L1 of first stage impeller 2 import is 125mm ~ 130mm, and the blade 10 inlet incidence angle Δ β of first stage impeller 2 is 12 ° ~ 15 °, and the blade 10 import thickness S of first stage impeller 2 is 2.5mm ~ 3.5mm; The internal diameter L2 of secondary impeller 4 import is 85mm ~ 90mm.

Blade 10 inlet incidence angle Δ β=β 2-β 1 of first stage impeller 2.

β 2 is media flow direction and horizontal plane angle; β 1 be blade 10 importer to horizontal plane angle.

The pump housing 5 critical piece adopts stainless steel, not only high temperature resistant, corrosion-resistant, and the pump housing 5 can 120 DEG C of normally work.

Medium enters from the import 7 of the pump housing 5, enters first stage impeller 2 by inducer 1, then by stator 3, medium is imported secondary impeller 4, is finally discharged by outlet 8 from secondary impeller 4 medium out through the pump housing 5.

Claims (1)

1. two-stage cantilever centrifugal pump, comprise pump support (6), first stage impeller (2), secondary impeller (4) is disposed with in the pump housing (5) on the main shaft (9) of pump support (6), be stator (3) between first stage impeller (2) and secondary impeller (4), it is characterized in that being provided with inducer (1) on the main shaft (9) at import (7) place of the pump housing (5); The internal diameter (L1) of first stage impeller (2) import is 125mm ~ 130mm, blade (10) the inlet incidence angle Δ β of first stage impeller (2) is 12 ° ~ 15 °, and blade (10) the import thickness (S) of first stage impeller (2) is 2.5mm ~ 3.5mm; The internal diameter (L2) of secondary impeller (4) import is 85mm ~ 90mm.
CN201010185579.5A 2010-05-28 2010-05-28 Two-stage cantilever centrifugal pump CN102261336B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201010185579.5A CN102261336B (en) 2010-05-28 2010-05-28 Two-stage cantilever centrifugal pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201010185579.5A CN102261336B (en) 2010-05-28 2010-05-28 Two-stage cantilever centrifugal pump

Publications (2)

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CN102261336A CN102261336A (en) 2011-11-30
CN102261336B true CN102261336B (en) 2016-01-06

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102606485B (en) * 2012-03-27 2014-08-20 上海阿波罗机械股份有限公司 Startup water feed pump for nuclear power station
CN102996503B (en) * 2012-12-05 2015-04-08 中国海洋石油总公司 Multistage sectional type centrifugal pump with function of balancing axial force by self
CN103629161A (en) * 2013-12-17 2014-03-12 辽宁长志泵业有限公司 Second-level cantilever type small flow centrifugal pump
CN104214111A (en) * 2014-09-19 2014-12-17 无锡太博泵业有限公司 Water guiding mechanism for vertical water pump

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CN86204176U (en) * 1986-06-16 1987-06-10 中国石化销售公司山西省石油公司 Multistage horizontal centrifugal pump with induced wheel
CN2744859Y (en) * 2004-11-01 2005-12-07 义乌市第二石油化工泵厂 Guide vane type multistage self-suction centrifugal pump with strong gas-liquid separation function
CN200978836Y (en) * 2006-12-04 2007-11-21 上海连成(集团)有限公司 Long axis mounting structure for horizontal pump with guiding wheel

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Publication number Priority date Publication date Assignee Title
CN2095293U (en) * 1991-06-12 1992-02-05 机械电子工业部合肥通用机械研究所 Multi-stage overhanging centrifugal pump
CN2198420Y (en) * 1994-06-17 1995-05-24 沈阳方天水泵制造有限公司 Double casing centrifugal pump
RU2094660C1 (en) * 1995-06-22 1997-10-27 Научно-производственное предприятие "Интэп" Screw centrifugal pump
CN2584893Y (en) * 2002-12-10 2003-11-05 刘志男 Draininage pump
RU2378537C1 (en) * 2008-05-13 2010-01-10 Общество с ограниченной ответственностью "Сумский машиностроительный завод" Single-stage centrifugal pump
CN201246344Y (en) * 2008-09-04 2009-05-27 北京航天石化技术装备工程公司 Separable vertical centrifugal pump
CN201386657Y (en) * 2009-04-16 2010-01-20 沈阳启源工业泵制造有限公司 Cantilever-type condensate pump
CN101545491A (en) * 2009-05-04 2009-09-30 上海奥利泵业制造有限公司 Boiler water-feeding pump
CN201696300U (en) * 2010-05-28 2011-01-05 沈阳启源工业泵制造有限公司 Two-stage cantilever centrifugal pump

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN86204176U (en) * 1986-06-16 1987-06-10 中国石化销售公司山西省石油公司 Multistage horizontal centrifugal pump with induced wheel
CN2744859Y (en) * 2004-11-01 2005-12-07 义乌市第二石油化工泵厂 Guide vane type multistage self-suction centrifugal pump with strong gas-liquid separation function
CN200978836Y (en) * 2006-12-04 2007-11-21 上海连成(集团)有限公司 Long axis mounting structure for horizontal pump with guiding wheel

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