CN103307014B - A kind of single suction self-balanced multiple-stage water pump - Google Patents
A kind of single suction self-balanced multiple-stage water pump Download PDFInfo
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- CN103307014B CN103307014B CN201310293327.8A CN201310293327A CN103307014B CN 103307014 B CN103307014 B CN 103307014B CN 201310293327 A CN201310293327 A CN 201310293327A CN 103307014 B CN103307014 B CN 103307014B
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Abstract
Disclosure one single suction self-balanced multiple-stage water pump, pump shaft arranges anterior impeller sets, rear portion impeller sets, pump shaft arranges pump machine coupling band near one end of anterior impeller sets, at pump shaft two ends, bearing is set, described anterior impeller sets is oppositely oriented with rear portion impeller sets, back-to-back layout, when water pump quantity is even number, two groups of impeller quantity of described anterior impeller sets and rear portion impeller sets are equal, the impeller diameter adopting the impeller diameter strengthening water pump rear portion impeller sets or reduction water pump front portion impeller sets eliminates uneven axial force, the present invention is without using balancing frame, avoid the leakage caused because using balancing frame, water pump performance and efficiency are greatly improved, enhance the suitability of water pump.
Description
Technical field
The present invention relates to drainage equipment technical field, particularly to single suction self-balanced multiple-stage water pump.
Background technology
In existing multi-stage water pump running, due to impeller front and rear cover plate area not etc., cause impeller front and rear cover plate stress not, form the uneven axial force of water pump.For balancing axial thrust, multi-stage water pump mainly leans on the axial gap of adjustment dish inner face to carry out balanced action axial force on rotor, after balancing frame is contained in impeller, rotates with pump shaft.But balancing frame is the leakage by axial gap produces pressure balance axial force, without leakage, also cannot balancing axial thrust.The leakage rate of ordinary water pump balancing frame accounts for the 4%～10% of metered flow, and so big leakage rate causes the waste dropping the end and energy of pump efficiency.It addition, because water pump actual working environment affects, often occur that the solid particle that particle diameter is bigger enters balancing frame or the situation of blocking water return pipeline, thus causing balanced controls to damage and losing efficacy, have impact on water pump performance, make water pump reduce service life.
Multi-stage water pump can adopt being arranged symmetrically with of impeller sets to eliminate uneven axial force theoretically, it is to avoid reveals, but due to following several reasons, limits the method promoting the use of in practice.
1. horizontally-mounted single-suction multilevel water pump, for improving suction vacuum and the anti-cavitation ability of draining pump, often strengthens impeller sets first stage impeller water inlet area, causes first stage impeller imbalance axial force bigger than secondary impeller, become uneven axial force.
2. odd level draining pump front and rear impeller arranges that quantity etc. does not cause axial force uneven.
3. when horizontally-mounted single-suction multilevel immersible pump runs, rear axle end face can be produced pressure by the water under high pressure after water inlet end impeller sets is pressurizeed, and causes uneven axial force.
4. when the multistage draining pump of vertical installation runs, imbalance axial force when the self gravitation of water pump rotor causes water pump operation.
Summary of the invention
In order to solve multi-stage water pump axial force imbalance problem, the present invention provides a kind of single suction self-balanced multiple-stage water pump, pump shaft arranges anterior impeller sets, rear portion impeller sets, pump shaft arranges pump machine coupling band near one end of anterior impeller sets, at pump shaft two ends, bearing is set, described anterior impeller sets is oppositely oriented with rear portion impeller sets, back-to-back layout, when water pump quantity is even number, two groups of impeller quantity of described anterior impeller sets and rear portion impeller sets are equal, the impeller diameter adopting the impeller diameter strengthening water pump rear portion impeller sets or reduction water pump front portion impeller sets eliminates uneven axial force.So can overcome balancing frame defect, water pump can be made again to reach the effect of axial force self-balancing, be particularly well-suited to solve the axial force imbalance problem of single-suction multilevel draining pump.
In order to solve multi-stage water pump axial force imbalance problem, the present invention also provides for a kind of single suction self-balanced multiple-stage water pump, pump shaft arranges anterior impeller sets, rear portion impeller sets, pump shaft arranges pump machine coupling band near one end of anterior impeller sets, at pump shaft two ends, bearing is set, described anterior impeller sets is oppositely oriented with rear portion impeller sets, back-to-back layout, when water pump quantity is odd number, two groups of impeller quantity of described anterior impeller sets and rear portion impeller sets are not etc., a unnecessary impeller is placed in water pump rear portion impeller sets, the impeller diameter regulating water pump front portion impeller sets or rear portion impeller sets is adopted to reach the self-balancing of water pump axial force again.
Beneficial effects of the present invention is as follows: a kind of single suction self-balanced multiple-stage water pump disclosed by the invention, it is under the premise of layout oppositely oriented at water pump vane, back-to-back, according to impeller number, the uneven axial force produced when single-suction multilevel draining pump runs by regulating impeller diameter to compensate, so that water pump axial force realizes self-balancing.This single suction self-balanced multiple-stage water pump is without using balancing frame, thus avoid because using balancing frame and the leakage that causes, thus water pump performance and efficiency are greatly improved, and the extreme enrichment balance method of China's single-suction multilevel draining pump, enhance the suitability of water pump.
Accompanying drawing explanation
Fig. 1 is horizontally-mounted single suction self-balanced multiple-stage submersible pump structure schematic diagram；
Fig. 2 is horizontally-mounted single suction self-balanced multiple-stage water pump structure schematic diagram；
Fig. 3 is the left view of Fig. 2.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, present invention is described.
Fig. 1 is horizontally-mounted single suction self-balanced multiple-stage submersible pump structure schematic diagram；Fig. 2 is horizontally-mounted single suction self-balanced multiple-stage water pump structure schematic diagram；Fig. 3 is the left view of Fig. 2.
As Figure 1-3, a kind of single suction self-balanced multiple-stage water pump provided by the invention, pump shaft 5 arranges anterior impeller sets 3, rear portion impeller sets 4, pump shaft 5 arranges pump machine coupling band 7 near one end of anterior impeller sets 3, at pump shaft 5 two ends, bearing 6 is set, described anterior impeller sets 3 is oppositely oriented with rear portion impeller sets 4, back-to-back layout, when water pump quantity is even number, two groups of impeller quantity of described anterior impeller sets 3 and rear portion impeller sets 4 are equal, the impeller diameter adopting the impeller diameter strengthening water pump rear portion impeller sets 4 or reduction water pump front portion impeller sets 3 eliminates uneven axial force.
The present invention also provides for another kind of single suction self-balanced multiple-stage water pump, pump shaft 5 arranges anterior impeller sets 3, rear portion impeller sets 4, pump shaft 5 arranges pump machine coupling band 7 near one end of anterior impeller sets 3, at pump shaft 5 two ends, bearing 6 is set, described anterior impeller sets 3 is oppositely oriented with rear portion impeller sets 4, back-to-back layout, when water pump quantity is odd number, two groups of impeller quantity of described anterior impeller sets 3 and rear portion impeller sets 4 are not etc., a unnecessary impeller is placed in water pump rear portion impeller sets 4, the impeller diameter regulating water pump front portion impeller sets 3 or rear portion impeller sets 4 is adopted to reach the self-balancing of water pump axial force again.
The present invention is by can be calculated the size of uneven axial force in multi-stage water pump operation, and computing formula is as follows:
1. horizontally-mounted single-suction multilevel draining pump, if water pump vane group single-stage lift is, pressure be, water pump front portion impeller sets first order impeller intake area is, all the other impeller intake areas be.The axial force now produced。
2. horizontally-mounted single-suction multilevel immersible pump, if water pump front portion impeller sets single-stage lift is, pressure be, in the impeller sets of water pump front portion, impeller quantity is, the cross-sectional area of pump shaft is.The axial force produced。
3. the multi-stage water pump of vertical installation, rotor weight also produces power axially downwards.
Specifically, the present invention includes: water inlet 1, outlet 2, water pump front portion impeller sets 3, water pump rear portion impeller sets 4, pump shaft 5, bearing 6, pump machine connected body 7.Water pump is connected with the same power source by pump machine connected body 7, described anterior impeller sets 3 and rear portion impeller sets 4 layout oppositely oriented, back-to-back, the impeller number of water pump can be odd number or even number, when water pump quantity is even number, two groups of impeller quantity are equal, adopt to strengthen water pump rear portion impeller diameter or reduce water pump front portion impeller diameter and carry out balance those imbalance axial force；When water pump quantity is odd number, unnecessary one stage impeller not etc., is not placed in water pump rear portion impeller sets by two groups of impeller quantity, then adopts and regulate water pump front portion impeller diameter and realize the self-balancing of water pump axial force.Following example are in conjunction with horizontally-mounted single-suction multilevel water pump, and the water pump of vertical installation only need to additionally balance the uneven axial force produced by water pump rotor.
Embodiment one: when water pump vane number is even number, in Fig. 1, the uneven axial force produced when horizontally-mounted single-suction multilevel immersible pump is run, impeller sets 3 is pointed in direction；In Fig. 2, the uneven axial force produced when horizontally-mounted single-suction multilevel draining pump is run, impeller sets front portion impeller sets 3 is pointed in direction.The impeller diameter that can increase water pump rear portion impeller sets 4 eliminates uneven axial force.
Embodiment two: when water pump vane number is odd number, unnecessary water wheels are placed in water pump rear portion impeller sets 4.In Fig. 1, the uneven axial force produced when horizontally-mounted single-suction multilevel immersible pump is run；In Fig. 2, the uneven axial force produced when horizontally-mounted single-suction multilevel draining pump is run.When above-mentioned value be on the occasion of time, uneven axial force points to rear portion impeller sets 4, the impeller diameter increasing anterior impeller sets 3 now should be adopted to eliminate uneven axial force, or adopt the impeller diameter reducing rear portion impeller sets 4 to eliminate uneven axial force；When this value is negative value, uneven axial force points to anterior impeller sets 3, and the impeller diameter increasing rear portion impeller sets 4 now should be adopted to eliminate uneven axial force.
Beneficial effects of the present invention is as follows: one disclosed by the invention is to rotation self-balanced multiple-stage water pump, it is under the premise that rotation is arranged by water pump vane, according to impeller number, the uneven axial force produced during by regulating impeller diameter and compensating single-suction multilevel water pump operation, so that water pump axial force realizes self-balancing.This single suction self-balanced multiple-stage water pump is without using balancing frame, thus avoid because using balancing frame and the leakage that causes, thus water pump performance and efficiency are greatly improved, and the extreme enrichment balance method of China's single-suction multilevel water pump, enhance the suitability of water pump.
It should be noted that; above-mentioned specific embodiment is merely exemplary; under the above-mentioned instruction of the present invention; those skilled in the art can carry out various improvement and deformation on the basis of above-described embodiment and such as will be kept above in containment in gate nacelle pressure and become the negative pressure etc. kept in nacelle outside lower than containment, and these improve or deformation all falls within protection scope of the present invention.It will be understood by those skilled in the art that specific descriptions above are intended merely to the explanation purpose of the present invention, be not intended to limit the present invention.Protection scope of the present invention is limited by claim and equivalent thereof.
Claims (1)
- null1. a single suction self-balanced multiple-stage draining pump，Pump shaft (5) arranges anterior impeller sets (3)、Rear portion impeller sets (4)，In pump shaft (5) upper one end near anterior impeller sets (3), pump machine coupling band (7) is set，At pump shaft (5) two ends, bearing (6) is set，It is characterized in that: described anterior impeller sets (3) is oppositely oriented with rear portion impeller sets (4)、Back-to-back layout，When water pump quantity is even number，Two groups of impeller quantity of described anterior impeller sets (3) and rear portion impeller sets (4) are equal，The impeller diameter adopting the impeller diameter strengthening water pump rear portion impeller sets (4) or reduction water pump front portion impeller sets (3) eliminates uneven axial force，When water pump quantity is odd number，Two groups of impeller quantity of described anterior impeller sets (3) and rear portion impeller sets (4) are not etc.，A unnecessary impeller is placed in water pump rear portion impeller sets (4)，The impeller diameter regulating water pump front portion impeller sets (3) or rear portion impeller sets (4) is adopted to reach the self-balancing of water pump axial force again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310293327.8A CN103307014B (en) | 2013-07-15 | 2013-07-15 | A kind of single suction self-balanced multiple-stage water pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310293327.8A CN103307014B (en) | 2013-07-15 | 2013-07-15 | A kind of single suction self-balanced multiple-stage water pump |
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| Publication Number | Publication Date |
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| CN103307014A CN103307014A (en) | 2013-09-18 |
| CN103307014B true CN103307014B (en) | 2016-07-06 |
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| CN201310293327.8A Expired - Fee Related CN103307014B (en) | 2013-07-15 | 2013-07-15 | A kind of single suction self-balanced multiple-stage water pump |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU205739U1 (en) * | 2019-07-15 | 2021-08-04 | Общество с ограниченной ответственностью "Нефтекамский машиностроительный завод" (ООО "НКМЗ") | Centrifugal sectional pump with two parallel flows of the pumped medium |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108331759A (en) * | 2018-04-18 | 2018-07-27 | 合肥恒大江海泵业股份有限公司 | A kind of impeller asymmetric arrangement balanced type single-suction multistage centrifugal pump |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1055413A (en) * | 1991-04-05 | 1991-10-16 | 山西省通利水泵技工贸联合服务部 | Single suction opposed type high-lift submersible pump |
| CN1439812A (en) * | 2002-10-15 | 2003-09-03 | 甘肃工业大学 | Axial-flow self-balancing air oil mixed transfer pump and control system thereof |
| CN101892990A (en) * | 2010-06-13 | 2010-11-24 | 西安航天泵业有限公司 | Horizontal split multi-stage pump |
| CN201786684U (en) * | 2010-04-09 | 2011-04-06 | 烟台恒邦集团有限公司泵业分公司 | Self-balancing multistage submerged pump |
| CN202811460U (en) * | 2012-10-25 | 2013-03-20 | 浙江佳力科技股份有限公司 | Multistage middle-open type centrifugal pump axial force balance structure |
| CN202971307U (en) * | 2012-12-05 | 2013-06-05 | 中国海洋石油总公司 | Multi-stage sectional centrifugal pump capable of self-balancing axial force |
-
2013
- 2013-07-15 CN CN201310293327.8A patent/CN103307014B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1055413A (en) * | 1991-04-05 | 1991-10-16 | 山西省通利水泵技工贸联合服务部 | Single suction opposed type high-lift submersible pump |
| CN1439812A (en) * | 2002-10-15 | 2003-09-03 | 甘肃工业大学 | Axial-flow self-balancing air oil mixed transfer pump and control system thereof |
| CN201786684U (en) * | 2010-04-09 | 2011-04-06 | 烟台恒邦集团有限公司泵业分公司 | Self-balancing multistage submerged pump |
| CN101892990A (en) * | 2010-06-13 | 2010-11-24 | 西安航天泵业有限公司 | Horizontal split multi-stage pump |
| CN202811460U (en) * | 2012-10-25 | 2013-03-20 | 浙江佳力科技股份有限公司 | Multistage middle-open type centrifugal pump axial force balance structure |
| CN202971307U (en) * | 2012-12-05 | 2013-06-05 | 中国海洋石油总公司 | Multi-stage sectional centrifugal pump capable of self-balancing axial force |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU205739U1 (en) * | 2019-07-15 | 2021-08-04 | Общество с ограниченной ответственностью "Нефтекамский машиностроительный завод" (ООО "НКМЗ") | Centrifugal sectional pump with two parallel flows of the pumped medium |
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| CN103307014A (en) | 2013-09-18 |
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Granted publication date: 20160706 Termination date: 20180715 |