CN201535257U - Vertical tube bag type coagulated water pump - Google Patents

Vertical tube bag type coagulated water pump Download PDF

Info

Publication number
CN201535257U
CN201535257U CN2009203131625U CN200920313162U CN201535257U CN 201535257 U CN201535257 U CN 201535257U CN 2009203131625 U CN2009203131625 U CN 2009203131625U CN 200920313162 U CN200920313162 U CN 200920313162U CN 201535257 U CN201535257 U CN 201535257U
Authority
CN
China
Prior art keywords
impeller
outer cylinder
cylinder body
pump
balancing drum
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 - Fee Related
Application number
CN2009203131625U
Other languages
Chinese (zh)
Inventor
潘新建
邓昌春
叶丹映
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Changsha Swan Industrial Pump Co., Ltd.
Original Assignee
CHANGSHA SWAN INDUSTRIAL PUMP Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by CHANGSHA SWAN INDUSTRIAL PUMP Co Ltd filed Critical CHANGSHA SWAN INDUSTRIAL PUMP Co Ltd
Priority to CN2009203131625U priority Critical patent/CN201535257U/en
Application granted granted Critical
Publication of CN201535257U publication Critical patent/CN201535257U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

The utility model discloses a vertical tube bag type coagulated water pump, wherein a primary impeller is a double-absorbing impeller (2), an impeller (4) is in a closed structure, a guide blade is a radial guide blade (5) which is mounted in a middle segment (6), a balance drum (8) which is connected with an upper shaft sleeve (10) into one body is mounted on an upper main shaft (11), a balance drum sleeve (7) which forms a narrow gap with the balance drum (8) is mounted on an inner tube body (21), a cavity on the balance drum (8) is communicated with an outer tube body (1) through a balance pipe (12), and a flow guiding plate (19) and a flow guiding cone (20) are mounted at the bottom of the outer tube body (1) and correspond to the double-absorbing impeller (2). The vertical tube bag type coagulated water pump has the characteristics of compact structure, high efficiency, stable running, excellent anti vapor etched performance and the like, and has stronger practical and popularized values.

Description

A kind of vertical barrel pocket type extraction pump
Technical field
The utility model relates to a kind of water pump, particularly relates to a kind of vertical barrel pocket type extraction pump.
Background technique
Vertical barrel pocket type extraction pump is the water pump that power plant is used to pump water of condensation, and its suction side high vacuum occurs cavitation easily and sucks air, and high especially to the anti-cavitation requirement of pump, lift is up to 150~350m simultaneously.Conventional construction is provided with inducer (15) before adopting first stage impeller, to improve the anti-cavitation performance of pump, adopts the impeller (16) of band equalizing orifice and pressure reducing sleeve (18) balance portion axial force is set, and the diffuser of employing (17) is a spatial guide blade.Adopt the barrel pocket type extraction pump of this structure to have following defective: owing to be provided with inducer before the first stage impeller, cantilever is longer, and operation stability is poor, simultaneously for guaranteeing cavitation performance, inducer and bell-mouthed gap have only 0.2~0.3mm, installation precision are required high.Impellers at different levels are provided with equalizing orifice, have upset the fluidised form of impeller inlet, have increased hydraulic loss and volumetric loss, have reduced the efficient of pump, simultaneously, the axial force that equalizing orifice can only balance 70%~80%, the load that bearing bears is still bigger.Diffuser is a spatial guide blade, and axial dimension is big, and the manufacture cost height is used for the many occasions of high-lift progression and is restricted, the overall arm length of while water pump, and operational shock is big, and the life-span is short.
The model utility content
The vertical barrel pocket type extraction pump that technical problem to be solved in the utility model provides a kind of compact structure, cost of production is low, efficient is high, operate steadily.
In order to solve the problems of the technologies described above, the vertical barrel pocket type extraction pump that the utility model provides, comprise the suction outer cylinder body, inner barrel, be installed in first stage impeller and impeller on the lower main axis, stator, the stage casing, Upper shaft sleeve, last main shaft, described first stage impeller is a double-entry impeller, described impeller is a closed type structure, described stator is the radial stator, described radial stator is installed in the described stage casing, on the main shaft balancing drum that fuses with described Upper shaft sleeve is installed on described, be equipped with on the described inner barrel and described balancing drum between be formed with the balancing drum cover of close gap, cavity above the described balancing drum is by balance tube and described outer cylinder body UNICOM, and it is corresponding with described double-entry impeller that described guide plate and flow deflecting cone are installed on described outer cylinder body bottom.
On described outer cylinder body, be provided with the positioning screwn that the pump main body is carried out radial location.
The vertical barrel pocket type extraction pump of employing technique scheme compared with prior art has following advantage:
(1), first stage impeller adopts double-entry impeller, its ingress does not need inducer, has shortened the axial dimension of pump, has reduced the installation precision requirement, has satisfied the requirement that improves the pump anti-cavitation performance simultaneously yet, moves more reliable.
(2), stator is the radial stator, hydraulic performance is superior, axial dimension is little, compact structure, cost is low, makes simply, is used for high-lift occasion and has more superiority, simultaneously, because overall jib-length shortens, moves more stable.
(3), balancing drum balancing axial thrust effect significantly, reliable, reduced the load of thrust-bearing, the working life of having improved thrust-bearing.
(4), impeller cancellation equalizing orifice, improved the fluidised form of impeller inlet, reduced hydraulic loss and volumetric loss, improved the efficient of pump.
(5), positioning screwn is installed on the outer cylinder body, and the pump main body in the outer cylinder body is carried out radial location, prevents radially rocking of pump main body, improved the stationarity of pump operation.
(6), the outer cylinder body intracavity bottom is provided with guide plate, improved first stage impeller inlet fluidised form, further improved the anti-cavitation performance of pump, also improved the efficient of pump simultaneously.
In sum, the utility model is a kind of compact structure, cost of production is low, efficient is high, operate steadily, be applicable to the vertical barrel pocket type extraction pump of high-lift occasion.
Description of drawings
Fig. 1 is a vertical barrel pocket type extraction pump structural drawing of the present utility model;
Fig. 2 is a traditional vertical barrel pocket type extraction pump structural drawing;
Fig. 3 is the enlarged view at I place among Fig. 1;
Fig. 4 is the enlarged view at II place among Fig. 1;
Fig. 5 is the A-A sectional view of outer cylinder body bottom among Fig. 1.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Referring to Fig. 1, Fig. 3, Fig. 4 and Fig. 5, first stage impeller is a double-entry impeller 2, impeller 4 is a closed type structure, stator is a radial stator 5, radial stator 5 is installed in the stage casing 6, the balancing drum 8 that fuses with Upper shaft sleeve 10 is installed on last main shaft 11, be equipped with on the inner barrel 21 and balancing drum 8 between be formed with the balancing drum cover 7 of close gap, cavity above the balancing drum 8 is by balance tube 12 and outer cylinder body 1 UNICOM, it is corresponding with double-entry impeller 2 that guide plate 19 and flow deflecting cone 20 are installed on outer cylinder body 1 bottom, is provided with the positioning screwn 14 that the pump main body is carried out radial location on outer cylinder body 1.
Referring to Fig. 1, first stage impeller is a double-entry impeller 2, is installed on the lower main axis 3.Current enter both sides about in the of 2 from double-entry impeller.Because double-entry impeller 2 is equivalent to two single suction impellers and is installed together back-to-back, the inlet flow velocity of double-entry impeller 2 is equivalent to half of single suction impeller under the identical situation of flow, has reduced entrance loss, has improved the anti-cavitation performance of pump.
Referring to Fig. 1, stator is a radial stator 5, is installed in the stage casing 6.Its axial dimension dwindles greatly, compact structure, and casting technique is simplified greatly, and manufacture cost reduces greatly, more is applicable to high-lift occasion simultaneously.
Referring to Fig. 3, balancing drum 8 fuses with Upper shaft sleeve 10, is fixed on the main shaft 11 and last main shaft 11 rotates together with minute half back-up ring 9.The external diameter of balancing drum 8 axial force of balance as required carries out accurate Calculation (but axial force of balance 90%~100%), the balancing drum 8 external cylindrical surfaces screw thread with sense of rotation coupling of getting on the bus, and and balancing drum overlaps the narrow and small gap of formation between 7 inner cylindrical surfaces, and current are flowed through, and pressure sharply reduces behind this gap.In the cavity below the balancing drum 8 is high pressure, cavity above the balancing drum 8 is by balance tube 12 and outer cylinder body 1 UNICOM, cavity pressure approaches the low pressure in the outer cylinder body 1, rely on the pressure balance axial force of balancing drum both sides about in the of 8, reduce the load of thrust-bearing, improved the working life of thrust-bearing.
Referring to Fig. 1, impeller 4 is a closed type structure, on lower main axis 3, does not have equalizing orifice on its cover plate, and hydraulic loss and volumetric loss have been eliminated in the flow through disturbance of the current that impeller 4 flows out from equalizing orifice when not receiving equalizing orifice of current, have improved the efficient of pump.
Referring to Fig. 4, positioning screwn 14 is installed on the outer cylinder body 1, after the pump main body hangs in outer cylinder body 1, adjust positioning screwn 14, it is contacted with cover plate 13 external cylindrical surfaces, return 0.2~0.3mm then, again positioning screwn 14 is welded on outer cylinder body 1 pump main body rocking in outer cylinder body 1 when preventing to move.
Referring to Fig. 5, guide plate 19, flow deflecting cone 20 are welded in outer cylinder body 1 bottom, and guide plate has been eliminated the disturbance state of the current that flow down from the outer cylinder body inner chamber, have improved the suction performance of first stage impeller, further improve the anti-cavitation performance of pump, also improved the efficient of pump simultaneously.
Referring to Fig. 1 and Fig. 2, the utility model compact structure, cost of production is low, efficient is high, operate steadily, be used for high-lift occasion has more superiority, has very strong practical and popularizing value.
Personnel in the present technique field should be realized that; the foregoing description is not with the qualification of the present utility model of opposing; as long as in connotation scope of the present utility model, any the foregoing description technique variation, flexible program are not all exceeded protection domain of the present utility model.

Claims (2)

1. vertical barrel pocket type extraction pump, comprise and suck outer cylinder body (1), inner barrel (21), be installed in first stage impeller and impeller (4) on the lower main axis (3), stator, stage casing (6), Upper shaft sleeve (10), last main shaft (11), it is characterized in that: described first stage impeller is double-entry impeller (2), described impeller (4) is a closed type structure, described stator is radial stator (5), described radial stator (5) is installed in the described stage casing (6), on the main shaft (11) balancing drum (8) that fuses with described Upper shaft sleeve (10) is installed on described, be equipped with on the described inner barrel (21) and described balancing drum (8) between be formed with the balancing drum cover (7) of close gap, cavity above the described balancing drum (8) is by balance tube (12) and described outer cylinder body (1) UNICOM, and it is corresponding with described double-entry impeller (2) that described guide plate (19) and flow deflecting cone (20) are installed on described outer cylinder body (1) bottom.
2. vertical barrel pocket type extraction pump according to claim 1 is characterized in that: be provided with the positioning screwn (14) that the pump main body is carried out radial location on described outer cylinder body (1).
CN2009203131625U 2009-10-23 2009-10-23 Vertical tube bag type coagulated water pump Expired - Fee Related CN201535257U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009203131625U CN201535257U (en) 2009-10-23 2009-10-23 Vertical tube bag type coagulated water pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009203131625U CN201535257U (en) 2009-10-23 2009-10-23 Vertical tube bag type coagulated water pump

Publications (1)

Publication Number Publication Date
CN201535257U true CN201535257U (en) 2010-07-28

Family

ID=42535036

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2009203131625U Expired - Fee Related CN201535257U (en) 2009-10-23 2009-10-23 Vertical tube bag type coagulated water pump

Country Status (1)

Country Link
CN (1) CN201535257U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN105422463A (en) * 2015-12-31 2016-03-23 镇江江大泵业科技有限公司 Condensate pump for large thermal power plant

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN105422463A (en) * 2015-12-31 2016-03-23 镇江江大泵业科技有限公司 Condensate pump for large thermal power plant

Similar Documents

Publication Publication Date Title
CN101225833A (en) Vertical barrel pocket type extraction pump
CN100432443C (en) Centrifugal pump for deep well
CN104389796A (en) Two-stage impeller embedded submersible axial-flow pump
CN100365289C (en) Multi-stage centrifugal pump capable of self-balancing axial force by impeller
CN102003408B (en) Low specific speed centrifugal impeller with radial backflow holes
CN201535257U (en) Vertical tube bag type coagulated water pump
CN205349865U (en) Novel blower inlet casing structure
CN201627724U (en) Vertical multi-stage centrifugal pump
CN206943014U (en) A kind of barrel pocket type extraction pump structure
CN101603541B (en) Electric diving pump
CN202500816U (en) Open type rotary jet pump
CN201546966U (en) Centrifugal pump
CN204921450U (en) Reverse osmosis seawater desalts multistage high -pressure pump
CN105422473A (en) Large-flow low-lift axial flow pump
CN206770269U (en) Double suction Turo pump
CN206874490U (en) Axial subdivision three-level centrifugal pump
CN101718282B (en) Centrifugal pump
CN206221299U (en) A kind of novel deep well submerged pump
CN200978839Y (en) Vertical multistage pump
CN103807179A (en) Novel self-balancing type vertical type multistage pump
CN201461460U (en) Submersible motor pump
CN204646750U (en) Centrifugal pump hydraulic power part structure
CN216077694U (en) Balance pipe system for improving cavitation resistance and axial force balance capability of multistage pump
CN203023135U (en) High-efficiency energy-saving vertical barrel-type condensate pump
CN210343739U (en) Double-suction submersible pump

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C56 Change in the name or address of the patentee

Owner name: CHANGSHA LI'OU SWAN INDUSTRIAL PUMP CO., LTD.

Free format text: FORMER NAME: CHANGSHA SWAN INDUSTRIAL PUMP CO., LTD.

CP01 Change in the name or title of a patent holder

Address after: 410114 Hunan province Changsha Datuo Town City Tianxin Tianxin Environmental Protection Industrial Park

Patentee after: Changsha Swan Industrial Pump Co., Ltd.

Address before: 410114 Hunan province Changsha Datuo Town City Tianxin Tianxin Environmental Protection Industrial Park

Patentee before: Changsha Swan Industrial Pump Co., Ltd.

CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20100728

Termination date: 20151023

EXPY Termination of patent right or utility model