CN202284568U - Rotor assembly capable of guaranteeing dynamic balance accuracy of multistage pump rotor - Google Patents
Rotor assembly capable of guaranteeing dynamic balance accuracy of multistage pump rotor Download PDFInfo
- Publication number
- CN202284568U CN202284568U CN2011204358648U CN201120435864U CN202284568U CN 202284568 U CN202284568 U CN 202284568U CN 2011204358648 U CN2011204358648 U CN 2011204358648U CN 201120435864 U CN201120435864 U CN 201120435864U CN 202284568 U CN202284568 U CN 202284568U
- Authority
- CN
- China
- Prior art keywords
- multistage pump
- impeller
- pump shaft
- rotor
- seal ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to a rotor assembly, in particular to a rotor assembly capable of guaranteeing dynamic balance accuracy of a multistage pump rotor, which is applied to a multistage eccentric high pressure pump. A front impeller mechanism and a rear impeller mechanism are formed by impeller groups which are continuously distributed at intervals. Each impeller comprises an impeller, a front casing sealing ring and a rear casing sealing ring, wherein the impeller is sleeved on a multistage pump shaft, the front casing sealing ring is sleeved at the front end of the impeller, the rear casing sealing ring is sleeved at the rear end of the impeller, a push plate is sleeved at the head portion of the multistage pump shaft, a coupler is sleeved at the tail of the multistage pump shaft, a balance drum is sleeved on the multistage pump shaft at the left end of the front impeller mechanism, and the rear casing sealing is composed of an upper shell and a lower shell. The rotor assembly capable of guaranteeing dynamic balance accuracy of the multistage pump rotor is simple in structure, high in assembling accuracy and capable of improving using accuracy, simplifying installation and prolonging service life.
Description
Technical field
The utility model patent relates to a kind of rotor assembly, relates in particular to a kind of rotor assembly that ensures multistage pump rotor dynamic balancing precision, is used for the multistage centrifugal high-pressure service pump.
Background technique
The rotor assembly of present multistage centrifugal high-pressure service pump of the prior art generally adopts the structure of band front and back casing ring; Wherein press the pump of inner housing horizonally split structure among multistage horizonally split BB3 structure and the bivalve body BB5 of API610 standard definition, its rotor assembly is the structure that adopts casing ring integral installation before and after the band.Because seal ring and impeller clearance are very little in such rotor assembly, can't be with the casing ring dynamic balancing; If want to let seal ring move on to that the neutral gear place carries out dynamic balancing between multi-stage impeller, then because the span of multistage pump shaft is very big to the rotor rigidity effects, the preferential wheelbase that guarantees in the design is so the front and back seal ring generally can't be clamp-oned this neutral gear.Therefore, the multistage pump rotor needs to do dynamic balancing at the state of not adorning the body seal ring, finishes need tear one time again open after the dynamic balancing and could the body seal ring be loaded onto.Adopt such design method can bring more problem, the first, after the dismounting of multistage pump rotor, the form and position tolerance that its part is installed changes some, so the rotor dynamic balancing precision after the refitting also will receive certain destruction.The second, because rotor can't carry out the dynamic balancing check by final installment state,, cause application risk to strengthen so the actual dynamic balance accuracy of rotor can not get detecting.The 3rd, need dismounting again behind the rotor dynamic balancing, increase more workload, and be easy to cause pulling of axle to knock hair etc., increased the risk of damage, also strengthened workload and repair cycle.
Summary of the invention
The utility model mainly is to solve the deficiency that exists in the existing technology; Provide a kind of simple in structure; And mainly solve the multistage pump rotor and can't once assemble and directly accomplish dynamically balanced problem, make rotor assembly realize once assembling and directly accomplish dynamic balancing, thereby improve and ensured the dynamic balance accuracy of rotor part; Simplify the workload of installation and maintenance, reduced the rotor assembly of guarantee multistage pump rotor dynamic balancing precision that repeated disassembled and assembled causes the risk of damage parts.
The above-mentioned technical problem of the utility model mainly is able to solve through following technical proposals:
A kind of rotor assembly that ensures multistage pump rotor dynamic balancing precision; Comprise multistage pump shaft, impeller mechanism and back impeller mechanism before being respectively equipped with on the described multistage pump shaft, described before impeller mechanism and back impeller mechanism respectively by impeller sets mutually consecutive intervals shape distribution form; Described impeller sets comprises impeller, front case seal ring and rear case seal ring; Described impeller set is connected on the multistage pump shaft, and the front end of described impeller is with the front case seal ring, and the rear end of described impeller is with the rear case seal ring; The head of described multistage pump shaft is with thrust disc; The afterbody of described multistage pump shaft is with coupling, is with balancing drum on the multistage pump shaft of described preceding impeller mechanism left end, and described rear case seal ring is made up of upper shell and lower shell body.
The front case seal ring is by global design, and the rear case seal ring is pressed and divided half design, divides seal ring partly to be connected by the articulation screw, and whole processing divides partly and installs.After employing should design, rotor assembly just can be realized the overall time dynamic balancing.During dynamic balancing preceding seal ring is moved to back sealing part (increasing back sealing ring is not adorned), and the design special frock fixes seal ring, rotor can be done dynamic balancing.After finishing dynamic balancing, the increasing back sealing ring that divides half is installed, rotor assembly can use.
High rotating speed in being specially adapted to, the multistage centrifugal pump that pressure is higher; For the pump of low speed, low pressure, the front and back casing ring all can adopt the structure of branch half, to be convenient for changing seal ring.Taken into full account and utilized the structural feature and the pressure-bearing characteristic of multistage pump rotor part to design.See from structural feature that at first front case seal ring seal aperture is big, rear case seal ring aperture is little, so from leakage area, the former is big, the latter is little.Secondly, from the pressure difference that seal ring bears, the pressure reduction that preceding seal ring bears is big, and the pressure reduction that bear at the increasing back sealing ring place is little.(annotate: the pressure reduction that preceding seal ring bears is the gesture lift of single-stage impeller, and the pressure reduction that bear at the increasing back sealing ring place is the moving lift of single-stage impeller, general multistage centrifugal pump impeller; Moving lift accounts for 30% of lift; The gesture lift accounts for 70% of lift, and when pump duty reduced, moving lift proportion was littler.) the 3rd, from seal ring design of part intensity, because the increasing back sealing ring aperture is little, so thicker (having living space on the structure) that the radial thickness of increasing back sealing ring can design is not yielding, preceding seal ring is this condition not then.So from these 3, increasing back sealing ring adopts and divides half design very little to inner leakage contribution, structural strength all allows.And the pressure reduction that preceding seal ring bears is big, and leakage area is big, and structural strength is poor, as adopting the structure meeting easy deformation of horizonally split, reduces precision, influences volumetric efficiency.Therefore, preceding seal ring is not taked the design of branch half.The characteristic of present technique scheme may be summarized to be: design is under the situation that does not influence the pump technical performance; Realized the dynamic balancing of multistage pump rotor assembly overall time; Improve rotor assembly dynamic balance accuracy and reliability, made things convenient for and installed and maintenance, improved the designing quality of product.
As preferably; Described thrust disc and multistage pump between centers are provided with the adjustment ring; Described adjustment ring and multistage pump shaft socket-connect; Described thrust disc and multistage pump shaft are through preceding locking screw parent phase locking, and described coupling fixes with multistage pump shaft through joining key mutually, and described coupling and multistage pump shaft are through back locking screw parent phase locking.
As preferably, described before impeller mechanism be fixedly connected through key with the back impeller mechanism, described impeller and multistage pump between centers pass through fixedly axial position of snap ring, described upper shell and lower shell body fix through screw.
The utility model provides a kind of rotor assembly that ensures multistage pump rotor dynamic balancing precision, and is simple in structure, and assembly precision is high, improves service precision, simplifies and installs, and increases the service life.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the structural representation of rear case seal ring among Fig. 1.
Embodiment
Pass through embodiment below, and combine accompanying drawing, do further bright specifically the technological scheme of the utility model.
Embodiment 1: as depicted in figs. 1 and 2, a kind of rotor assembly that ensures multistage pump rotor dynamic balancing precision comprises multistage pump shaft 1; Impeller mechanism 2 and back impeller mechanism 3 before being respectively equipped with on the described multistage pump shaft 1; Before described impeller mechanism 2 and back impeller mechanism 3 respectively by impeller sets 4 mutually consecutive intervals shape distribution form, described impeller sets 4 comprises impeller 5, front case seal ring 6 and rear case seal ring 7, described impeller 5 is socketed on the multistage pump shaft 1; The front end of described impeller 5 is with front case seal ring 6; The rear end of described impeller 5 is with rear case seal ring 7, and the head of described multistage pump shaft 1 is with thrust disc 8, and the afterbody of described multistage pump shaft 1 is with coupling 9; Be with balancing drum 10 on the multistage pump shaft 1 of impeller mechanism 2 left ends before described; Described rear case seal ring 7 is made up of upper shell 11 and lower shell body 12, and 1 of described thrust disc 8 and multistage pump shaft are provided with adjustment ring 13, and described adjustment ring 13 socket-connects with multistage pump shaft 1; Described thrust disc 8 is locked through preceding locking nut 14 with multistage pump shaft 1 mutually; Described coupling 9 fixes with multistage pump shaft 1 through joining key 19 mutually, and described coupling 9 is locked through back locking nut 15 with multistage pump shaft 1 mutually, and described preceding impeller mechanism 2 is fixedly connected through key 16 with back impeller mechanism 3; 1 of described impeller 5 and multistage pump shaft fix through snap ring 17, and described upper shell 11 fixes through screw 18 with lower shell body 12.
Claims (3)
1. rotor assembly that ensures multistage pump rotor dynamic balancing precision; It is characterized in that: comprise multistage pump shaft (1); Be respectively equipped with preceding impeller mechanism (2) and back impeller mechanism (3) on the described multistage pump shaft (1); Before described impeller mechanism (2) and back impeller mechanism (3) respectively by impeller sets (4) mutually consecutive intervals shape distribution form, described impeller sets (4) comprises impeller (5), front case seal ring (6) and rear case seal ring (7), described impeller (5) is socketed on the multistage pump shaft (1); The front end of described impeller (5) is with front case seal ring (6); The rear end of described impeller (5) is with rear case seal ring (7), and the head of described multistage pump shaft (1) is with thrust disc (8), and the afterbody of described multistage pump shaft (1) is with coupling (9); Be with balancing drum (10) on the multistage pump shaft (1) of impeller mechanism (2) left end before described, described rear case seal ring (7) is made up of upper shell (11) and lower shell body (12).
2. a kind of rotor assembly that ensures multistage pump rotor dynamic balancing precision according to claim 1; It is characterized in that: be provided with adjustment ring (13) between described thrust disc (8) and multistage pump shaft (1); Described adjustment ring (13) socket-connects with multistage pump shaft (1); Described thrust disc (8) is locked through preceding locking nut (14) with multistage pump shaft (1) mutually; Described coupling (9) fixes with multistage pump shaft (1) through joining key (19) mutually, and described coupling (9) is locked through back locking nut (15) with multistage pump shaft (1) mutually.
3. a kind of rotor assembly that ensures multistage pump rotor dynamic balancing precision according to claim 1 and 2; It is characterized in that: impeller mechanism (2) and back impeller mechanism (3) are fixedly connected through key (16) before described; Realize axially locating through snap ring (17) between described impeller (5) and multistage pump shaft (1), described upper shell (11) and lower shell body (12) fix through screw (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204358648U CN202284568U (en) | 2011-11-07 | 2011-11-07 | Rotor assembly capable of guaranteeing dynamic balance accuracy of multistage pump rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204358648U CN202284568U (en) | 2011-11-07 | 2011-11-07 | Rotor assembly capable of guaranteeing dynamic balance accuracy of multistage pump rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202284568U true CN202284568U (en) | 2012-06-27 |
Family
ID=46296092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204358648U Expired - Lifetime CN202284568U (en) | 2011-11-07 | 2011-11-07 | Rotor assembly capable of guaranteeing dynamic balance accuracy of multistage pump rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202284568U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615410A (en) * | 2013-11-26 | 2014-03-05 | 天津明贤科技有限公司 | Rotor set |
| EP3187736A1 (en) * | 2015-12-30 | 2017-07-05 | Sulzer Management AG | Multi-stage horizontal centrifugal pump for pumping a fluid and method for repairing same |
| CN107218248A (en) * | 2017-08-08 | 2017-09-29 | 内蒙古鄂尔多斯联合化工有限公司 | A kind of high pressure urea metro-methylamine pump rotor structure |
| 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 |
-
2011
- 2011-11-07 CN CN2011204358648U patent/CN202284568U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615410A (en) * | 2013-11-26 | 2014-03-05 | 天津明贤科技有限公司 | Rotor set |
| EP3187736A1 (en) * | 2015-12-30 | 2017-07-05 | Sulzer Management AG | Multi-stage horizontal centrifugal pump for pumping a fluid and method for repairing same |
| US10724526B2 (en) | 2015-12-30 | 2020-07-28 | Sulzer Management Ag | Multi-stage horizontal centrifugal pump for conveying a fluid and a method for repairing the same |
| RU2732086C2 (en) * | 2015-12-30 | 2020-09-11 | Зульцер Мэнэджмент Аг | Multistage horizontal centrifugal pump for supply of fluid medium and method of its repair |
| CN107218248A (en) * | 2017-08-08 | 2017-09-29 | 内蒙古鄂尔多斯联合化工有限公司 | A kind of high pressure urea metro-methylamine pump rotor structure |
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202284568U (en) | Rotor assembly capable of guaranteeing dynamic balance accuracy of multistage pump rotor | |
| CN103201515B (en) | Axial piston engine | |
| CN104302891A (en) | Exhaust-gas turbocharger | |
| CN104704245A (en) | Exhaust gas turbocharger shaft having an impeller | |
| US20180045213A1 (en) | Impeller for centrifugal pumps | |
| CN102287368B (en) | Composite balance single-suction double-screw pump | |
| CN204511947U (en) | With the single-stage canned pump of balancing disc structure | |
| CN202896174U (en) | Wheel hub with brake disc assembly | |
| CN205533429U (en) | Multistage centrifugal pump circumference formula stator that crumples | |
| CN205064351U (en) | Modular housing seal ring | |
| US20150285260A1 (en) | Rotor of a supercharging device | |
| CN204334214U (en) | A kind of rotor of magnetic suspension high speed motor and protection bearing arrangement thereof | |
| CN202266415U (en) | Compound balance type single-suction double-screw pump | |
| CN210509603U (en) | Horizontal single-stage single-suction centrifugal pump | |
| CN203272207U (en) | Pump spindle | |
| CN203441545U (en) | Bolt shaft tightening impeller and connection structure of impeller and turbine shaft | |
| CN208169132U (en) | A kind of first-stage double-absorption inner core axial subdivision multistage double casing volute pump | |
| CN202646172U (en) | Balance disk for multistage pump | |
| CN101220877B (en) | Shuttle type reducing check valve | |
| RU2565090C1 (en) | Rotor shaft of low pressure compressor of turbojet engine, connection assembly of rotor shaft disks of low pressure compressor of turbojet engine | |
| CN103016386A (en) | Axial adjustment structure for rotor of single-stage cantilever-type centrifugal pump | |
| RU2565141C1 (en) | Rotor shaft of low pressure compressor of turbojet engine, connection assembly of rotor shaft disks of low pressure compressor of turbojet engine, spacer of connection assembly of rotor shaft disks of low pressure compressor of turbojet engine | |
| CN209324986U (en) | A kind of quality loop of composite construction | |
| CN209115250U (en) | A kind of hydraulic motor oil distribution mechanism | |
| CN213511352U (en) | Rotor for axial flow compressor and axial flow compressor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120627 |