CN107100888A - A kind of big twisted blade type impeller by the efficient double wall dredge pump of sphere diameter - Google Patents

A kind of big twisted blade type impeller by the efficient double wall dredge pump of sphere diameter Download PDF

Info

Publication number
CN107100888A
CN107100888A CN201710366776.9A CN201710366776A CN107100888A CN 107100888 A CN107100888 A CN 107100888A CN 201710366776 A CN201710366776 A CN 201710366776A CN 107100888 A CN107100888 A CN 107100888A
Authority
CN
China
Prior art keywords
blade
impeller
pump
dredge pump
diameter
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.)
Granted
Application number
CN201710366776.9A
Other languages
Chinese (zh)
Other versions
CN107100888B (en
Inventor
庄海飞
张晴波
刘明明
王文魁
郭涛
林挺
吴腾伟
胡京招
兰剑
伍立说
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.)
CCCC National Engineering Research Center of Dredging Technology and Equipment Co Ltd
Original Assignee
CCCC National Engineering Research Center of Dredging Technology and Equipment 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 CCCC National Engineering Research Center of Dredging Technology and Equipment Co Ltd filed Critical CCCC National Engineering Research Center of Dredging Technology and Equipment Co Ltd
Priority to CN201710366776.9A priority Critical patent/CN107100888B/en
Publication of CN107100888A publication Critical patent/CN107100888A/en
Application granted granted Critical
Publication of CN107100888B publication Critical patent/CN107100888B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/24—Vanes
    • F04D29/242—Geometry, shape
    • F04D29/245—Geometry, shape for special effects
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
    • F04D7/04—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being viscous or non-homogenous

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The present invention relates to dredge pump the Hydraulic Design technical field, a kind of big twisted blade type impeller by the efficient double wall dredge pump of sphere diameter is disclosed, wherein impeller maximum is by sphere diameter is impeller suction inlet diameter 60%, and blade is three-dimensional twisted blade.The pump impeller blade of dredging of the present invention is designed to distortion type blade, vane type line improves the handling capacity of impeller channel, new impeller of pump of dredging can solve the problem that the problem of easily blocking when dredge pump conveys big rock, and reduce hydraulic loss, improve dredging pump efficiency.

Description

A kind of big twisted blade type impeller by the efficient double wall dredge pump of sphere diameter
Technical field
The present invention relates to it is a kind of be used to dredging, can convey in mining industry field large rock mass, mineral it is big high by sphere diameter Industrial pump is imitated, mainly a kind of handling capacity is the 60% of dredge pump suction inlet diameter, can effectively prevent the dredge pump of ratchel blocking.
Background technology
Dredge pump is the key equipment of dredger, when cutter suction dredger is digging decomposed rock, coral hermatolith or contains larger stone During the sandy soil of block, it may occur that stone gets lodged in the situation of dredging pump impeller import, construction must not be interrupted, dredge pump inlet short pipe of dismantling, The stone of impeller inlet is cleared, dredge pump frequent jams, it is impossible to ensure the continuity of construction, seriously reduce strand suction and dredge Efficiency of construction of the ship in such a soil property operating mode.With existing 3500m3Exemplified by the dredge pump applied on/h cutter suction dredgers, either The common dredge pump of five leaf impellers or the efficient dredge pump of three blade impellers, by particle diameter be dredge pump suction inlet diameter 35-40%, when The a diameter of 850mm of dredge pump suction inlet, i.e. dredge pump maximum are 340mm by sphere diameter, when block sizes are more than 340mm, it is easy to It is blocked in mouth piece position.Dredging pump impeller it is relatively small by sphere diameter, be dredge pump occurs frequent jams when conveying sillar Main cause.During for Subgrade soils such as large rock masses, dredge pump key flow passage components, which do not require nothing more than its runner, should comply with Dredged marerial Running orbit, and flow channels are big, reduce dredge pump and block.
The content of the invention
The problem of easily blocking when conveying rock for existing excavating pump, it can pass through it is an object of the invention to provide one kind The bigger impeller of pump of object external diameter, using the dredge pump maximum of the Impeller Design by sphere diameter up to the 60% of dredge pump suction inlet diameter, When a diameter of 850mm of dredge pump suction inlet, i.e. dredge pump maximum are 510mm by sphere diameter, the conveying energy of big rock is enhanced Power, effectively prevents dredge pump from blocking, while having higher efficiency under various working, improves the efficiency of construction of dredger.
The present invention needs the technical scheme to be protected to be：
A kind of big twisted blade type impeller by the efficient double wall dredge pump of sphere diameter, the excessively stream part of the impeller is by impeller protecgulum Plate, back shroud of impeller, fair water cone, blade, wheel hub 5 surround that (this part-structure is related to building block, position relationship, annexation All it is already belonging to prior art).And the innovative point of the present invention, it is characterised in that：
Described blade 3 is distortion type blade, and the number of blade is three, and adjacent is in 120 degree of intervals, and blade exit width is leaf The 60% of suction inlet diameter is taken turns, impeller channel is by the 60% of a diameter of impeller suction inlet diameter of maximum spheroid, and blade is from import to going out Mouth is uniform to be thickeied, and vane thickness value is 80~120mm, 120 °~150 ° of subtended angle of blade value.Vane type line equation is by two It is grouped into, blade and front shroud intersection equation and blade and back shroud intersection equation：
The blade and front shroud intersection equation：
The blade and back shroud intersection equation：
Wherein, r1For impeller suction inlet radius, unit mm；θ is angle of the blade in circumferencial direction, and vane inlet is starting 0 °, blade exit is terminal It is 135 °, r for subtended angle of blade, in Fig. 1s(θ) and rh(θ) is respectively front shroud intersection and bonnet Any point is to the distance of impeller central, unit mm on plate intersection.Blade is after front shroud intersection and back shroud intersection setting-out, Xiang Ye Wheel outer rim direction is thickeied in the thickness range set.
Based on above technical scheme, a kind of efficient excavating pump of big orifice for conveying rock can be designed, inner chamber is by the present invention Cantilevered shrouded centrifugal impellor and single channel spiral case composition, internal impeller and the spiral case of outside are using rich chromium cast iron casting Into.
The excessively stream part of impeller is surrounded by front shroud of impeller, back shroud of impeller, fair water cone, blade, wheel hub 5.Pump shaft and leaf Wheel wheel hub is connected through a screw thread, and impeller suction inlet, which has, abrasionproof bushing at wearing ring, suction inlet, there is abrasion-resistant lining plate between impeller and pump cover. Blade is distortion type blade, and the number of blade is three, and impeller channel passes through the 60% of a diameter of impeller suction inlet diameter of maximum spheroid.
Spiral case is supported and fixed by liner plate, pump cover, and spiral casing flow passage section configuration is round rectangle, and spiral casing flow passage width value takes The gap width sum of impeller channel width and impeller front and rear cover plate thickness value and impeller cover and abrasion-proof backing block, impeller front and rear covers Thickness of slab angle value takes 50-60mm, and the gap width of impeller cover and abrasion-proof backing block takes 3-5mm, and the inside and outside edge of spiral case is helix Type.
The pump impeller blade of dredging of the present invention is designed to distortion type blade, and vane type line improves passing through for impeller channel Ability, present invention impeller of pump of dredging can solve the problem that when dredge pump conveys big rock the problem of easily blocking, and reduce waterpower damage Lose, improve dredging pump efficiency.
The dredge pump of the present invention has greatly by sphere diameter, high efficiency, passes through the logical of sphere diameter dredge pump product more existing than market Cross sphere diameter and improve 50%, effectively reduce the blocking probability of dredging large rock mass, and dredge pump clear water efficiency is up to 85%, it is ensured that apply Work continuity and economical, obvious benefit lifting is brought to enterprise.
Brief description of the drawings
Fig. 1 is impeller axis projection and blade type line chart.
Fig. 2 is impeller water body runner graphics and passes through sphere diameter figure.
Fig. 3 is three-dimensional blades part drawing, 1- front shrouds, 2- fair water cones, 3- blades, 4- back shrouds, 5- wheel hubs.
Fig. 4 is double wall dredge pump three-dimensional installation diagram, 6- spiral cases (inner bag), 7- abrasion-proof backing blocks, the big lids of 8-, 9- front pump covers, 10- leaves Wheel, 11- impeller suction inlet wearing rings, 12- shells, 13- bearing cartridge modules, 14- pump shafts, 15- bearing cartridge brackets.
Fig. 5 is the dredge pump clean water performance curve using Impeller Design of the present invention.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings：
Shown in Fig. 1, impeller channel axis plane projection and vane type line, the number of blade are 3, impeller outer diameter D2For 2040mm, impeller Suction inlet diameter 850mm, impeller impeller channel exit width B2 are impeller suction inlet diameter D160%, i.e. impeller channel exit width B2For 510mm, subtended angle of blade takes 135 °, is calculated according to equation (1) and equation (2) and obtains vane type line coordinate such as following table.Blade After front shroud intersection and back shroud intersection setting-out, thicken 80mm to impeller outer edge direction and obtain.
θ(°) 0 10 20 30 40 50 60 70 80 90 100 110 120 130 135
rs(θ)(mm) 231 277 323 382 433 490 541 600 654 708 755 805 857 912 1020
rh(θ)(mm) 429 448 474 498 529 556 591 626 669 708 755 805 857 912 1020
Shown in Fig. 2, impeller of the present invention it is maximum by the way that sphere diameter is impeller suction inlet diameter D1 in Fig. 1 60%, i.e., 510mm。
Shown in Fig. 3, the excessively stream part of impeller is by front shroud of impeller 1, fair water cone 2, blade 3 and back shroud of impeller 4, wheel hub 5 Surround, and foregoing five parts are integrated casting.Blade 3 is distortion type blade, and the number of blade is three, and impeller channel passes through maximum Sphere diameter is the 60% of impeller suction inlet diameter.
Shown in Fig. 4, pump shaft 14 is connected through a screw thread with impeller 10, and impeller 10 is connected with impeller suction inlet wearing ring 11 by bolt Connect, impeller 10 is located in the cavity that spiral case (inner bag) 6 and abrasion-proof backing block 7 are constituted, and spiral case (inner bag) 6 is bolted on outer On shell 12, cavity between spiral case (inner bag) 6 and shell 12 has balanced the pressure in dredge pump runner full of water under high pressure, impeller 10 with There is abrasion-proof backing block 7 between front pump cover 9 and shell 12, abrasion-proof backing block 7 is connected by bolt and front pump cover 9 and shell 12, front pump cover 9 leads to Cross and be bolted on big lid 8, big lid 8 is bolted on shell 12, pump shaft 14 is located inside bearing cartridge 13, bearing cartridge 13 are fixed on bearing cartridge bracket 15, and bearing cartridge bracket 15 is connected by bolt with shell 7, bearing cartridge bracket 15 and shell 12 It is bolted in deck in ship structure.
Spiral case (inner bag) width of flow path value take impeller channel width and impeller front and rear cover plate thickness value and impeller cover with The gap width sum of abrasion-proof backing block, impeller front and rear cover plate thickness value takes 60mm, and the gap width of impeller cover and abrasion-proof backing block takes 4mm, i.e. spiral case (inner bag) width of flow path value takes 578mm.
Shown in Fig. 5, the performance curve of dredge pump of the present invention, flow 12000-14000m are obtained by numbered analog simulation3/ h, Hydraulic efficiency is up to 83%-85%, and hydraulic performance is excellent.Examine, enhanced according to the impeller that the present invention is designed through production practices The conveying capacity of big rock, effectively prevents dredge pump from blocking, and improves the construction continuity of dredger, and then improves and dredge The efficiency of construction of ship, with higher economic benefit.Dredge pump of the cutter suction dredger under severe soil property can be greatly reduced to block Probability, reduces maintenance time, improves ship construction continuity, increases effective construction duration of cutter suction dredger, improve the daily output, So as to cost-effective, increase the benefit.
Illustrating for patent of the present invention, but the present invention is not limited to above-described embodiment above, also comprising structure of the present invention Other embodiment or variation in the range of think of.

Claims (2)

1. a kind of big twisted blade type impeller by the efficient double wall dredge pump of sphere diameter, the excessively stream part of the impeller is by impeller protecgulum Plate, back shroud of impeller, fair water cone, blade, wheel hub 5 surround that (this part-structure is related to building block, position relationship, annexation All it is already belonging to prior art), it is characterised in that
Described blade 3 is distortion type blade, and the number of blade is three, and adjacent is in 120 degree of intervals, and blade exit width is inhaled for impeller The 60% of mouth diameter, impeller channel is by the 60% of a diameter of impeller suction inlet diameter of maximum spheroid, and blade is equal from import to outlet Even to thicken, vane thickness value is 80~120mm, 120 °~150 ° of subtended angle of blade value.
2. impeller as claimed in claim 1, it is characterised in that vane type line equation is made up of two parts, blade and front shroud Intersection equation and blade and back shroud intersection equation：
Blade and front shroud intersection equation：rs(θ)=0.9863e0.0059θr1
Blade and back shroud intersection equation：rh(θ)=(0.0125 θ+0.5273) r1
Wherein, r1For impeller suction inlet radius, unit mm；θ is angle of the blade in circumferencial direction, and vane inlet is 0 ° of starting, blade Export as terminal It is 135 °, r for subtended angle of blade, in Fig. 1s(θ) and rh(θ) is respectively front shroud intersection and back shroud intersection Upper any point is to the distance of impeller central, unit mm.Blade is after front shroud intersection and back shroud intersection setting-out, to impeller outer edge Direction is thickeied in the thickness range set.
CN201710366776.9A 2017-05-23 2017-05-23 Twisted blade type impeller of large-pass spherical-diameter efficient double-shell mud pump Active CN107100888B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710366776.9A CN107100888B (en) 2017-05-23 2017-05-23 Twisted blade type impeller of large-pass spherical-diameter efficient double-shell mud pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710366776.9A CN107100888B (en) 2017-05-23 2017-05-23 Twisted blade type impeller of large-pass spherical-diameter efficient double-shell mud pump

Publications (2)

Publication Number Publication Date
CN107100888A true CN107100888A (en) 2017-08-29
CN107100888B CN107100888B (en) 2023-06-16

Family

ID=59669901

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710366776.9A Active CN107100888B (en) 2017-05-23 2017-05-23 Twisted blade type impeller of large-pass spherical-diameter efficient double-shell mud pump

Country Status (1)

Country Link
CN (1) CN107100888B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108150448A (en) * 2017-10-19 2018-06-12 浙江理工大学 A kind of method for designing impeller of not equidistant runner pump
CN109404332A (en) * 2018-12-13 2019-03-01 湖南万通科技股份有限公司 A kind of impeller and coke delivery pump
CN110454433A (en) * 2019-08-27 2019-11-15 陕西科技大学 A kind of immersible pump blade wheel structure
CN113719469A (en) * 2021-09-03 2021-11-30 中交疏浚技术装备国家工程研究中心有限公司 Design method for impeller blade of short-row-pitch dredge pump

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4406338A1 (en) * 1994-02-26 1995-09-07 Fink Gerhard Double curved impeller blade
US6220819B1 (en) * 2000-01-12 2001-04-24 Industrial Technology Research Institute Centrifugal pump impeller
US20060127211A1 (en) * 2003-06-16 2006-06-15 Weir Warman Lrd Pump impeller
JP2006291917A (en) * 2005-04-14 2006-10-26 Shin Meiwa Ind Co Ltd Impeller for centrifugal pump and centrifugal pump having the same
CN101368574A (en) * 2008-10-15 2009-02-18 许洪元 Design method of two phase flow pump impeller
KR100950454B1 (en) * 2009-12-23 2010-04-02 (주)제일파워펌프 Solids self priming pumps
CN103438022A (en) * 2013-09-16 2013-12-11 江苏大学 Centrifugal pump with greatly distorted blades
CN103994077A (en) * 2014-05-29 2014-08-20 戴年歌 Vertical type slime pump
CN105240310A (en) * 2015-12-03 2016-01-13 浙江工业大学之江学院 Hydraulic design method for double-blade non-block centrifugal impeller
CN207064319U (en) * 2017-05-23 2018-03-02 中交疏浚技术装备国家工程研究中心有限公司 It is a kind of to pass through the twisted blade type impeller of the efficient double wall dredge pump of sphere diameter greatly

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4406338A1 (en) * 1994-02-26 1995-09-07 Fink Gerhard Double curved impeller blade
US6220819B1 (en) * 2000-01-12 2001-04-24 Industrial Technology Research Institute Centrifugal pump impeller
US20060127211A1 (en) * 2003-06-16 2006-06-15 Weir Warman Lrd Pump impeller
JP2006291917A (en) * 2005-04-14 2006-10-26 Shin Meiwa Ind Co Ltd Impeller for centrifugal pump and centrifugal pump having the same
CN101368574A (en) * 2008-10-15 2009-02-18 许洪元 Design method of two phase flow pump impeller
KR100950454B1 (en) * 2009-12-23 2010-04-02 (주)제일파워펌프 Solids self priming pumps
CN103438022A (en) * 2013-09-16 2013-12-11 江苏大学 Centrifugal pump with greatly distorted blades
CN103994077A (en) * 2014-05-29 2014-08-20 戴年歌 Vertical type slime pump
CN105240310A (en) * 2015-12-03 2016-01-13 浙江工业大学之江学院 Hydraulic design method for double-blade non-block centrifugal impeller
CN207064319U (en) * 2017-05-23 2018-03-02 中交疏浚技术装备国家工程研究中心有限公司 It is a kind of to pass through the twisted blade type impeller of the efficient double wall dredge pump of sphere diameter greatly

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108150448A (en) * 2017-10-19 2018-06-12 浙江理工大学 A kind of method for designing impeller of not equidistant runner pump
CN108150448B (en) * 2017-10-19 2023-09-29 浙江理工大学 Impeller design method of unequal-spacing runner pump
CN109404332A (en) * 2018-12-13 2019-03-01 湖南万通科技股份有限公司 A kind of impeller and coke delivery pump
CN110454433A (en) * 2019-08-27 2019-11-15 陕西科技大学 A kind of immersible pump blade wheel structure
CN110454433B (en) * 2019-08-27 2024-04-05 陕西科技大学 Impeller structure for submersible pump
CN113719469A (en) * 2021-09-03 2021-11-30 中交疏浚技术装备国家工程研究中心有限公司 Design method for impeller blade of short-row-pitch dredge pump
CN113719469B (en) * 2021-09-03 2023-11-17 中交疏浚技术装备国家工程研究中心有限公司 Design method for impeller blades of short-row-distance mud pump

Also Published As

Publication number Publication date
CN107100888B (en) 2023-06-16

Similar Documents

Publication Publication Date Title
CN107100888A (en) A kind of big twisted blade type impeller by the efficient double wall dredge pump of sphere diameter
CN207064319U (en) It is a kind of to pass through the twisted blade type impeller of the efficient double wall dredge pump of sphere diameter greatly
CN203892243U (en) Impeller for coal water slurry pump
AU2015318812B2 (en) Slurry pump impeller
CN106837856A (en) The blade impeller method for designing of high-efficiency abrasion-proof excavating pump three and impeller
CN108331763B (en) Design realization method of durable mud pump with prolonged service life
AU2017380455B2 (en) Impeller with rotor blades for centrifugal pump
CA2819779C (en) Centrifugal pump and a double bent rotor blade for use in such a centrifugal pump
CN113623231B (en) Non-blocking rotational flow pump
CN206608372U (en) Noise-reducing peripheral pump
CN113719469B (en) Design method for impeller blades of short-row-distance mud pump
CN207554357U (en) The efficient dual channel dredge pump of anti-clogging
CN206626013U (en) High-efficiency abrasion-proof is dredged impeller of pump
CN203146425U (en) Water pump with fluid director
CA2310062C (en) Stage in a submerged multiple-stage pump
CN208763909U (en) Durable type dredge pump
CN216617988U (en) Low-lift dredge pump impeller
CN114790989A (en) Anti-blocking wear-resistant multistage pump
EP2383471A1 (en) Slurry pump
CN207646775U (en) Cutter suction dredger
CN216044460U (en) Non-blocking vortex pump structure
JP2000045979A (en) Suction sand pump
CN220487875U (en) Low-abrasion mud pump
CN216617989U (en) Anti-winding semi-open type impeller mechanism
CN114076121A (en) Novel method for realizing abrasion resistance by applying guide vanes to centrifugal mud pump

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant