CN2581736Y - Ultrahigh pressure low specific speed multi-stage centrifugal pump with double case and rigid shaft - Google Patents
Ultrahigh pressure low specific speed multi-stage centrifugal pump with double case and rigid shaft Download PDFInfo
- Publication number
- CN2581736Y CN2581736Y CN 02256557 CN02256557U CN2581736Y CN 2581736 Y CN2581736 Y CN 2581736Y CN 02256557 CN02256557 CN 02256557 CN 02256557 U CN02256557 U CN 02256557U CN 2581736 Y CN2581736 Y CN 2581736Y
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- pump
- shaft
- impeller
- ultrahigh pressure
- centrifugal pump
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Abstract
The utility model discloses an ultrahigh pressure low specific speed multi-stage centrifugal pump with double shell bodies and a rigid axle, which is mainly characterized in that a pump shell (12) is in a cylinder shape. The pump shell (12) in the cylinder shape is respectively connected with a sucking pipeline (3) and a spitting pipeline (7). Both ends of the pump shell (12) in the cylinder shape respectively pass through a pump cover (9) and a half dividing end cover (2) to be tightly pressed by fasteners. A pump core is arranged in the pump shell (12) in the cylinder shape, both ends of a pump axle (15) respectively pass through the pump cover (9) and the half dividing end cover (2) and an impeller (13) is arranged on the pump axle (15) in a step shape in hot. The rotating speed of the first critical ratio of the utility model is 52, which is 5% higher than the prescribed value of GB/T13007/91 national standard and 2% to 2.5% higher than imported products in the same kind. Compared with an imported pump, the electricity cost of 560 thousand yuan can be saved in one year according to the calculation of the operation of only four hours. The ultrahigh pressure low specific speed multi-stage centrifugal pump designed according to the design theme, positive using effects can be brought to coke cutting industries.
Description
Technical field: the utility model relates to a kind of improvement invention of centrifugal pump, and what be specifically related to is a kind of invention that can continue the ultrahigh pressure bivalve body stiff shaft low-specific-speed multistage centrifugal pump of safe operation can adapt to frequent start-stop, operating mode violent change the time.
Background technique: in the prior art, traditional centrifugal pump is to be twisted with thick bolt by the stage casing of vertical fragmentation, suction casing, Spit Section to set up jointly.The turnover water pipe of centrifugal pump all is connected the suction chamber of pump by flange and the top, chamber that spues, and must pull down the turnover water pipe flange earlier during maintenance, unclamps king-bolt then, disintegrates again, and impeller, stator (stage casing) want one-level one-level ground to extract out by level.So mounting or dismounting pump work amount is big, the repair time is long.Because junction plane is many, be difficult to guarantee the concentric symmetry of each junction plane and evenly sealing in the assembling in addition, junction plane is revealed easily, poor reliability.Though this kind centrifugal pump can satisfy the place of general purpose high pressure, middle pressure or low pressure centrifugal pump, and be inapplicable to special (frequent start-stop, operating mode violent change etc.) centrifugal pump, insecure.
Summary of the invention: in view of the problem of known technology existence, the purpose of this utility model aims to provide a kind of operation and reliably is easy to bivalve body, stiff shaft structure with safeguarding, has the ultrahigh pressure bivalve body stiff shaft low-specific-speed multistage centrifugal pump of high-performance and high efficiency hydraulic characteristic simultaneously.The utility model is finished by following mode: this kind ultrahigh pressure bivalve body stiff shaft low-specific-speed multistage centrifugal pump, include pump case and pump core, described pump core is made up of stator, impeller and pump shaft, described stator and impeller set are contained on the pump shaft, it is characterized in that described pump case tubular, described tubular pump case is connected with the pipeline that spues with suction line respectively, the two ends of described tubular pump case are respectively by pump cover and divide half end cap to press with fastening piece, described pump core is located in the tubular pump case, and described pump shaft is the stepped shaft stiff shaft.The two ends of described stepped shaft stiff shaft are passed pump cover respectively and are divided half end cap, and described impeller hot charging is on step-like pump shaft.The impeller of described hot charging on the stepped shaft stiff shaft fixed by snap ring, at least two in described impeller.The utility model compared with prior art, and is reasonable in design, convenient for installation and maintenance owing to endosome (pump core) can easily be extracted out from shell (pump barrel body) or pack into, quick, accurately.And because pump shaft adopts stiff shaft, it in water first critical speed of rotation greater than more than 20% of rotating speed of pump running.According to the ultrahigh pressure bivalve body stiff shaft low-specific-speed multistage centrifugal pump of the utility model design motif made, will bring positive using effect to cutting burnt industry.
Description of drawings: the utility model has following accompanying drawing;
Fig. 1 is a structural representation of the present utility model.
Embodiment: accompanying drawing has been represented structure of the present utility model and embodiment, further describe the relevant details and the working principle of embodiment below more in conjunction with the accompanying drawings: this kind ultrahigh pressure bivalve body stiff shaft low-specific-speed multistage centrifugal pump, include pump case and pump core, described pump case 12 is a shell, described pump core is an inner casing, and pump case 12 is combined into double housing with the pump core.Described pump core is made up of stator 14, impeller 13 and pump shaft 15, described pump shaft 15 is the stepped shaft stiff shaft, described stator 14 and impeller 13 hot chargings are on the stepped shaft pump shaft, 13 at least two in described impeller, (the present embodiment impeller is 10) also is fixed on the ladder of stiff shaft 15 by snap ring 5 separately.Described pump case 12 is a tubular, and is fixed on the basis.Described pump core is located in the tubular pump case 12.Described tubular pump case 12 is provided with suction line 3 and spues pipeline 7, and described suction line 3 is corresponding with the pipeline 7 of spuing to be fixed on to suck and to send out blue 4 and send out on blue 6 with spuing, and makes to check or do not need to tear open pipeline when keeping in repair.The two ends of described tubular pump case 12 are respectively by pump cover 9 and divide half end cap, 2 usefulness fastening pieces to press, and when pulling down pump cover with the fastening piece that divides on half end cap, the pump core can be extracted out from tubular pump case 12.In the time will packing the pump core into, because the regulating action of butterfly spring 11 can be eliminated the error that repeats to assemble, and arbitrary stand by pump core is exchanged in tubular pump case 12.And needn't carry out centering again.The two ends of described pump shaft 15 are passed pump cover 9 respectively and are divided half end cap 2.The main flow passage components of pump are made up of component such as suction chamber A, impeller 13, stators 14.The function of suction chamber A is the import B that liquid is incorporated into impeller 13 from suction line 3.Impeller 13 is parts of energy being passed to liquid.When flowing through impeller 13, the fluid of per unit weight obtains energy one lift (290 meters) of specified quantity from impeller 13, and makes the hydraulic loss minimum at the quantity flow (250 meters 3/ o'clock) of regulation.Stator 14 is that impeller 13 outlet port trickles are collected, and it is sent into next stage impeller eye C.When the utility model is worked, make full of liquid in the centrifugal pump earlier, then start prime mover, because coupling 1 connects pump shaft 15, make pump shaft 15 rotations (n=3780 rev/min), the blade of impeller 13 orders about liquid and rotates, because centrifugal action liquid to the impeller outer edge diffluence, has increased kinetic energy and potential energy.Simultaneously, impeller 13 sucks liquid from suction chamber A.The liquid that impeller 13 flows out enters stator 14, and a part of kinetic energy is converted to potential energy, and the anti-blade of stator 14 is imported liquid next stage impeller eye D under favourable hydraulic characteristic.Since upper level to this process of next stage repeat whenever carry out one-level and all increase same lift (290 meters), 10 grades total head is 2900 meters.Flow is 250m
3In/time,, fluid entered into the doughnut E in the pump case, enters into the pipeline 7 that spues by discharge opening F at last, and working medium is transferred out continuously after passing through final stage stator 10.So circulation is until finishing whole job step.The first critical ratio rotating speed of present embodiment is 52, and is up to 5%, higher by 2 ~ 2.5% than similar imported product than GB/T13007/91 national Specification value.Only to move calculating in 4 hours every day, compare with import pump, can save 560,000 yuan of the electricity charge in 1 year.According to the ultrahigh pressure bivalve body stiff shaft low-specific-speed multistage centrifugal pump of the utility model design motif made, will bring positive using effect to cutting burnt industry.
Claims (3)
1, a kind of ultrahigh pressure bivalve body stiff shaft low-specific-speed multistage centrifugal pump, include pump case and pump core, described pump core is by stator (14), impeller (13) and pump shaft (15) are formed, described stator (14) is sleeved on the pump shaft (15) with impeller (13), it is characterized in that described pump case (12) is tubular, described tubular pump case (12) is connected with the pipeline that spues (7) with suction line (3) respectively, the two ends of described tubular pump case (12) are respectively by pump cover (9) and divide half end cap (2) to press with fastening piece, described pump core is located in the tubular pump case (12), the two ends of described pump shaft (15) are passed pump cover (9) respectively and are divided half end cap (2), described pump shaft (15) is the stepped shaft pump shaft, and described impeller (13) hot charging is on step-like pump shaft (15).
2, a kind of ultrahigh pressure as claimed in claim 1 bivalve body stiff shaft low-specific-speed multistage centrifugal pump is characterized in that the impeller (13) of described hot charging on stepped shaft pump shaft ladder is fixing by snap ring (5), (13) at least two in described impeller.
3, a kind of ultrahigh pressure as claimed in claim 1 bivalve body stiff shaft low-specific-speed multistage centrifugal pump is characterized in that described pump shaft (15) is a stiff shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02256557 CN2581736Y (en) | 2002-09-24 | 2002-09-24 | Ultrahigh pressure low specific speed multi-stage centrifugal pump with double case and rigid shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02256557 CN2581736Y (en) | 2002-09-24 | 2002-09-24 | Ultrahigh pressure low specific speed multi-stage centrifugal pump with double case and rigid shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2581736Y true CN2581736Y (en) | 2003-10-22 |
Family
ID=33724751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02256557 Expired - Lifetime CN2581736Y (en) | 2002-09-24 | 2002-09-24 | Ultrahigh pressure low specific speed multi-stage centrifugal pump with double case and rigid shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2581736Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101454578B (en) * | 2006-05-26 | 2012-03-14 | 西门子公司 | Multi-stage turbo compressor |
| CN102691534A (en) * | 2011-03-24 | 2012-09-26 | 阿特拉斯·科普柯能源有限公司 | Turbo machine |
| CN101666316B (en) * | 2008-09-03 | 2012-10-10 | 上海阿波罗机械股份有限公司 | Auxiliary water supply electric pump in nuclear power plant |
| CN103306986A (en) * | 2012-03-05 | 2013-09-18 | 株式会社荏原制作所 | Multi-stage pump |
| 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 |
| CN105485505A (en) * | 2016-01-03 | 2016-04-13 | 詹白勺 | Quick start vertical multistage centrifugal oil pump with sealed valve element and valve cover |
| CN106574621A (en) * | 2014-07-29 | 2017-04-19 | Ksb 股份公司 | Barrel-type pump with venting device and associated method |
| CN109026737A (en) * | 2018-08-02 | 2018-12-18 | 广州市能动机电设备有限公司 | A kind of centrifugal water pump |
-
2002
- 2002-09-24 CN CN 02256557 patent/CN2581736Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101454578B (en) * | 2006-05-26 | 2012-03-14 | 西门子公司 | Multi-stage turbo compressor |
| CN101666316B (en) * | 2008-09-03 | 2012-10-10 | 上海阿波罗机械股份有限公司 | Auxiliary water supply electric pump in nuclear power plant |
| CN102691534A (en) * | 2011-03-24 | 2012-09-26 | 阿特拉斯·科普柯能源有限公司 | Turbo machine |
| CN103306986A (en) * | 2012-03-05 | 2013-09-18 | 株式会社荏原制作所 | Multi-stage pump |
| CN103306986B (en) * | 2012-03-05 | 2017-03-01 | 株式会社荏原制作所 | Multistage pump |
| CN106574621A (en) * | 2014-07-29 | 2017-04-19 | Ksb 股份公司 | Barrel-type pump with venting device and associated method |
| 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 |
| CN105485505A (en) * | 2016-01-03 | 2016-04-13 | 詹白勺 | Quick start vertical multistage centrifugal oil pump with sealed valve element and valve cover |
| CN109026737A (en) * | 2018-08-02 | 2018-12-18 | 广州市能动机电设备有限公司 | A kind of centrifugal water pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20120924 Granted publication date: 20031022 |