CN2859040Y - High-pressure self-balancing two-housing segment centrifugal pump - Google Patents
High-pressure self-balancing two-housing segment centrifugal pump Download PDFInfo
- Publication number
- CN2859040Y CN2859040Y CN 200520009367 CN200520009367U CN2859040Y CN 2859040 Y CN2859040 Y CN 2859040Y CN 200520009367 CN200520009367 CN 200520009367 CN 200520009367 U CN200520009367 U CN 200520009367U CN 2859040 Y CN2859040 Y CN 2859040Y
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- pump
- high pressure
- pump core
- liquid collecting
- frame
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Abstract
The present utility model relates to a double-shell sectional centrifugal pump with high pressure self balancing, which aims at high reliability and long-term running as well as quick installation and maintenance. The self balancing of axial force can come true through the combination of the rotor parts arranged symmetrically and the sectional inner shell. The staged inner holes on the outer shell and the pump core which can be loaded/unloaded integrally can form A, B, C, D four liquid cavities the flow in the pump needs, the graphite gaskets are twined by the metal strips to seal the liquid between adjacent liquid cavities and compensate for excessive location seal. The outer pipe can be acted as the reversing channels in the pump of the symmetrical arranged impellers. Compared with existing technique, the pump retains the characteristic of the wide adjusting range, at the same time, it can reach the self balancing of pump axial force without balance mechanism, and does not need to dismantle pipes and base connecting bolts when the pump core is overhaulled and replaced, so the pump has the advantages of low maintenance working and low maintenance cost.
Description
Technical field
The utility model relates to a kind ofly can satisfy steel mill's high-pressure water descaling, high oil field water injection and crude oil exporting etc., simultaneously at high pressure centrifugal pump operating mode frequent variations, the high pressure self balancing bivalve body segment segmentation centrifugal pump that has the continuous roadability of high reliability long period when carrying non-clean re-injection water and turbid circulating water etc. that three-phase flow medium [as crude oil] such as the medium of certain corrosion and moisture, gas, sand grains is arranged.
Background technique
At present, high-pressure multi-stage centrifugal pump structure form mainly contains sectional type mono-hull, axially split type mono-hull, sectional type Balance disc bivalve body and several big classes of axially split type bivalve body.
Its multi-stage impeller of sectional type mono-hull high-pressure multi-stage centrifugal pump is disposed in order in the same way, and the axial force that produces during operation is up to tens of tons, and this power is born by thrust-bearing or thrust disc for instantaneous axial force and residual axial force in the pump running by the Balance disc balance of mechanism.When the pump working conditions change, the axial force variation makes pump rotor parts play and Balance disc and the moment friction of balance seat takes place, and can kill off-axis because of balanced controls when serious.Balance sensitivity that instantaneous axial force of while and residual axial force have been born mechanics limit.Such pump is in the operating conditions frequent variations and carry two, the deadly defect of short and less reliable of life-span is arranged during three-phase stream.Such pump keeps in repair and changes necessary detaching pipelines of rotor part and basic attachment bolt simultaneously, and workload is big, the maintenance cost height.
Axially split type mono-hull high-pressure multi-stage centrifugal pump can have the symmetric arrangement impeller rotor part, and the axial force self-balancing of running rotor parts need not be provided with axial force balance mechanism and instantaneous axial force and residual axial force only need be set bear mechanism.Such pump impeller symmetric arrangement, housing are voluted type and axial subdivision, and its inner flow passage is very complicated, and the shell cast manufacturability is poor.When such pump will increase and decrease impeller modificability energy range, must make Shell model in addition, make the cost of production height, the change difficulty, each specification pump Applicable scope is restricted.Such pump maintenance and replacing rotor part must detaching pipelines.
Needn't detaching pipelines when sectional type Balance disc bivalve height presses multistage centrifugal pump to have the double-shell pump maintenance and the advantage of basic attachment bolt, adopt axial force balance mechanism to make pump sensitivity, reliability and to the deadly defect of solid-liquid two-phase flow medium bad adaptability but also exist.
Needn't detaching pipelines when though axially split type bivalve height presses multistage centrifugal pump to have axial force balance and maintenance, the advantage of basic attachment bolt, also exist the pressure parameter of pump to adjust difficulty, the weakness that each specification pump Applicable scope is restricted.
Summary of the invention
The purpose of this utility model is to provide a kind of high pressure self balancing bivalve body segment segmentation centrifugal pump, to solve the high-pressure multi-stage centrifugal pump, solve the pump maintenance, change the convenient and performance range of pump core and change and do not cause the problem that cost of production significantly raises in the problem of carrying two, long period moves safely and reliably when three-phase flow medium and operating mode frequent variations.
The purpose of this utility model can reach by following technical measures: promptly this high pressure self balancing bivalve body segment segmentation centrifugal pump, its structural type are the sectional type multistage centrifugal pump of horizontal, bivalve body, axial force self-balancing.Housing is divided into inner housing and frame, and frame is processed by forging, and water-in and water-out flanged pipe and inner flow tube are welded on the frame.Inner housing is made up of inlet segment, deflector, middle deflector, high pressure inlet segment etc.The inner housing of pump is combined into the pump core with rotor part, outer housing cover, axle envelope parts and fore bearing parts.The ladder endoporus of frame and the inlet segment of pump core form liquid collecting cavity A, form liquid collecting cavity B with the deflector of pump core and the right part of middle deflector, form liquid collecting cavity C with the high pressure inlet segment of pump core, form liquid collecting cavity D with the deflector of pump core and the left part of middle deflector, adopt external pipeline (being inner flow tube) as the runner that commutates in the required pump of impeller symmetric arrangement, A, B, C, four liquid collecting cavities of D and inner flow tube form the through-flow runner of pump together, cut off between the graphite grazing pad is with each liquid collecting cavity and compensate crossing the location sealing with the metal looping, water exit end is arranged in the middle part of frame.The rotor part of pump is made up of low pressure area pressurizing propeller and zone of high pressure pressurizing propeller, axle, axle sleeve, stuffing box gland etc., height nip pressurizing propeller quantity equates, leaning on first impeller of drive end on the axle is the pump first order [import is towards drive end], leaning on first impeller of anti-drive end on the axle is the high pressure first order [import is towards anti-drive end], and the quantity that the last impeller of whole axle is arranged back-to-back equates.Medium in the outer housing cover canned pump frame of pump and the sealing force of each deflector sealing surface, each liquid collecting cavity sealing surface is provided.
The utility model compared with prior art, because this pump organically combines rotor part and the sectional type inner housing that impeller is symmetric arrangement, concentrated the advantage of sectional type multistage centrifugal pump, axial force self-balancing formula multistage centrifugal pump, bivalve body multistage centrifugal pump.This pump adopts sectional type, can adapt to very wide performance variation scope, and the rising of manufacture cost is relatively low; Adopt the axial force self-balancing formula, need not adopt axial force balance mechanism just can realize huge end thrust autobalance in the pump chamber; Adopt two shell types, the user needn't tear pipeline open when maintenance, basic attachment bolt just can keep in repair, change the pump core easily.
Description of drawings
Fig. 1 is a plan view of the present utility model;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the structural drawing of pump core of the present utility model.
Embodiment
Below with reference to accompanying drawing concrete structure of the present utility model is further described:
Referring to Fig. 1,2,3, the utility model is a kind of high pressure self balancing bivalve body segment segmentation centrifugal pump, comprise the pump core, its key is: a frame 2, suction flange 6, outlet(discharge) flange 3 and inner flow tube 5 are welded as a whole with frame 2, and frame 2, pump core 1 and metal wound gasket 4 are connected by hold-down bolt.Suction flange 6 places are pump inlet, and outlet(discharge) flange 3 places are pump discharge.
Described pump core 1 comprises the sectional type inner housing, and the sectional type inner housing is interconnected by bolt by inlet segment 14, deflector 13, middle deflector 12, high pressure inlet segment 9 and forms; Inner housing is formed pump core 1 with rear bearing parts 7, rotor part 8, outer housing cover 10, axle envelope parts 15, fore bearing parts 16.
The impeller 11 of described rotor part 8 is the sectional type symmetric arrangement back-to-back.
Described frame 2 inner chambers are the stepped shaft endoporus, the stepped shaft endoporus of frame and the inlet segment of pump core 14 form liquid collecting cavity A, form liquid collecting cavity B with the deflector 13 of pump core and the right part of middle deflector 12, form liquid collecting cavity C with the high pressure inlet segment 9 of pump core, form liquid collecting cavity D with the deflector 13 of pump core and the left part of middle deflector 12, adopt inner flow tube 5 as the runner that commutates in the required pump of impeller symmetric arrangement, A, B, C, four liquid collecting cavities of D and inner flow tube form the through-flow runner of pump together, cut off between the graphite grazing pad is with each liquid collecting cavity and compensate crossing the location sealing with the metal looping, water exit end is arranged in the middle part of frame.
Claims (4)
1, a kind of high pressure self balancing bivalve body segment segmentation centrifugal pump, comprise the pump core, it is characterized in that: a frame (2), suction flange (6), outlet(discharge) flange (3) and inner flow tube (5) are welded as a whole with frame (2), and frame (2), pump core (1) and metal wound gasket (4) are connected by hold-down bolt.
2, high pressure self balancing according to claim 1 bivalve body segment segmentation centrifugal pump, it is characterized in that: described pump core (1) comprises the sectional type inner housing, and the sectional type inner housing is interconnected by bolt and formed by inlet segment (14), deflector (13), middle deflector (12), high pressure inlet segment (9); Inner housing is formed pump core (1) with rear bearing parts (7), rotor part (8), outer housing cover (10), axle envelope parts (15), fore bearing parts (16).
3, high pressure self balancing according to claim 2 bivalve body segment segmentation centrifugal pump, it is characterized in that: the impeller (11) of rotor part (8) is the sectional type symmetric arrangement back-to-back.
4, according to claim 1,2 described high pressure self balancing bivalve body segment segmentation centrifugal pumps, it is characterized in that: frame (2) inner chamber is the stepped shaft endoporus, the inlet segment (14) of the ladder endoporus of frame and pump core forms liquid collecting cavity A, form liquid collecting cavity B with the deflector (13) of pump core and the right part of middle deflector (12), form liquid collecting cavity C with the high pressure inlet segment (9) of pump core, form liquid collecting cavity D with the deflector (13) of pump core and the left part of middle deflector (12), adopt inner flow tube (5) as the runner that commutates in the required pump of impeller symmetric arrangement, A, B, C, four liquid collecting cavities of D and inner flow tube form the through-flow runner of pump together, cut off between the graphite grazing pad is with each liquid collecting cavity and compensate crossing the location sealing with the metal looping, water exit end is arranged in the middle part of frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520009367 CN2859040Y (en) | 2005-05-30 | 2005-05-30 | High-pressure self-balancing two-housing segment centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520009367 CN2859040Y (en) | 2005-05-30 | 2005-05-30 | High-pressure self-balancing two-housing segment centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2859040Y true CN2859040Y (en) | 2007-01-17 |
Family
ID=37611899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520009367 Expired - Lifetime CN2859040Y (en) | 2005-05-30 | 2005-05-30 | High-pressure self-balancing two-housing segment centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2859040Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101892990A (en) * | 2010-06-13 | 2010-11-24 | 西安航天泵业有限公司 | Horizontal split multi-stage pump |
| CN105840489A (en) * | 2016-05-26 | 2016-08-10 | 重庆水泵厂有限责任公司 | Double-shell pump core convenient to install |
| CN107850075A (en) * | 2015-08-10 | 2018-03-27 | 诺沃皮尼奥内技术股份有限公司 | Centrifugal pump |
| CN109973401A (en) * | 2018-10-24 | 2019-07-05 | 浙江朗庆智能科技有限公司 | Based on centrifugal urea 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 |
-
2005
- 2005-05-30 CN CN 200520009367 patent/CN2859040Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101892990A (en) * | 2010-06-13 | 2010-11-24 | 西安航天泵业有限公司 | Horizontal split multi-stage pump |
| CN101892990B (en) * | 2010-06-13 | 2011-11-16 | 西安航天泵业有限公司 | Horizontal split multi-stage pump |
| CN107850075A (en) * | 2015-08-10 | 2018-03-27 | 诺沃皮尼奥内技术股份有限公司 | Centrifugal pump |
| JP2018523055A (en) * | 2015-08-10 | 2018-08-16 | ヌオーヴォ・ピニォーネ・テクノロジー・ソチエタ・レスポンサビリタ・リミタータＮｕｏｖｏ Ｐｉｇｎｏｎｅ Ｔｅｃｎｏｌｏｇｉｅ Ｓ．Ｒ．Ｌ． | Centrifugal pump |
| US11555496B2 (en) | 2015-08-10 | 2023-01-17 | Nuovo Pignone Tecnologie Srl | Centrifugal pump |
| CN105840489A (en) * | 2016-05-26 | 2016-08-10 | 重庆水泵厂有限责任公司 | Double-shell pump core convenient to install |
| CN109973401A (en) * | 2018-10-24 | 2019-07-05 | 浙江朗庆智能科技有限公司 | Based on centrifugal urea pump |
| CN110094339A (en) * | 2018-10-24 | 2019-08-06 | 浙江朗庆智能科技有限公司 | Centrifugal urea 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 |
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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: 20150530 Granted publication date: 20070117 |