CN103321911A - Pull-rod modularized guide vane type diagonal flow pump - Google Patents
Pull-rod modularized guide vane type diagonal flow pump Download PDFInfo
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- CN103321911A CN103321911A CN2013101784172A CN201310178417A CN103321911A CN 103321911 A CN103321911 A CN 103321911A CN 2013101784172 A CN2013101784172 A CN 2013101784172A CN 201310178417 A CN201310178417 A CN 201310178417A CN 103321911 A CN103321911 A CN 103321911A
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- urceolus
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Abstract
The invention relates to a high-flow and low-lift water pump used in medium-and large-scale water conservancy projects, and discloses a pull-rod modularized guide vane type diagonal flow pump. The diagonal flow pump comprises parts of square outer barrel and inlet pipe connecting sections, square outer barrels, pull rods, impeller blades, blade hubs, guide vane hubs, guide vane blades, streamlined ribbed plates, a pump shaft, guide vane body flanges, hydrocones, screws, press plates, oil seals, bend pipe sections, rolling bearings, mechanical seals, couplers and the likeother parts. The diagonal flow pump is characterized in that impeller casings and guide vane body outer walls are integrated to form the outer barrels, a cross section of each outer barrel adopts an square outside and round inside shape, the left sides of the outer barrels can be directly clamped in the connecting sections for positioning, so that fast butt joint is achieved, and the left sides require no fastening part; and moreover, the right sides of the outer barrels are connected and fixed with the guide vane body flanges and flanges on the left sides of the bend pipe sections through the pull rods and the nuts. Pull-rod connection is adopted, the guide vane bodies are connected with the outer barrels and the bend pipe sections, therefore, compared with a traditional diagonal flow pump, the pull-rod modularized guide vane type diagonal flow pump is more convenient to dismount and mount, facilitates maintenance and detection, and can be used for observing cavitation bubbles produced due to internal cavitation of the diagonal flow pump.
Description
Affiliated technical field
The present invention relates to a kind of large flow, low-lift pump type of using for big-and-middle-sized hydraulic engineering pumping plant, especially relate to the improvement to traditional mixed flow pump structure.
Background technique
Diagonal pumps are the higher pump types of a kind of specific speed, are performance and the structure pumps between axial-flow pump and centrifugal pump.It is mainly used in agricultural drainage and irrigation, municipal plumbing, power plant for circulating water, regional water transfer etc., is being applied aspect nuclear power, the naval vessel hydraulic jet propulsion in recent years.The first-selected pump type of project of South-to-North water diversion namely is diagonal pumps.As everyone knows, the hydraulic performance of centrifugal pump is good, but complex structure; Although axial-flow pump has simple in structure, lightweight, the advantage that floor space is little, efficient district is narrow, and using scope is not wide, can not move under small flow; And diagonal pumps have absorbed the advantage of axial-flow pump and centrifugal pump, adapt to that the lift excursion greatly, is efficiently distinguished wide, lift and power curve is smooth, can close near the advantage such as turn round the dead point, and the scope of using is to the expanded range of conventional centrifugal pump and axial-flow pump.
Through retrieval, Chinese patent discloses a kind of vertical full regulating type mixed flow pump, and (notice of authorization number: CN201650830), it mainly comprises wheel member, water pump body, pump shaft, adjustable lever etc., adjusting machine etc.But the impeller of the mixed flow pump of this structure is to be positioned at different housings with diffuser, inlet tube and blade wheel chamber, blade wheel chamber are all to be to cooperate with screw, nut, packing ring etc. to install with installation between diffuser outer wall and diffuser outer wall and the bend loss flange, in the time will dismantling, need each screw of dismounting, nut, process is loaded down with trivial details, trouble, and workload is large, consume the plenty of time, need a large amount of manpowers.When pump problem occurs and need to overhaul, need the numerous parts of dismounting, maintenance detects inconvenient.The out-of-flatness of pump case leading portion is the raised section, and out-of-shape has promoted difficulty of processing.
Summary of the invention
Loaded down with trivial details in order to solve the existing processing of traditional diagonal pumps, installation, dismounting trouble, the problem of maintenance, detection inconvenience etc. the invention provides a kind of pull-rod type modularization guide-vane diagonal pumps, and this pump not only cost is lower, and simple in structure, easy accessibility.
Diagonal pumps of the present invention comprise linkage section, impeller, diffuser, pump shaft, square urceolus, bend loss and mechanical seal etc.Impeller and pump shaft are fixed by fastening screw trip bolt, rotate with pump shaft; Impeller and diffuser are positioned at square urceolus; Linkage section, square urceolus, diffuser flange are connected pull bar and connect and fix with bend loss; Be provided with oil sealing and bearing in the stator wheel hub of diffuser, prevented the corrosion of bearing, utilize bearing to realize being connected with the rolling of pump shaft; Utilize concavo-convex chimericly between the right flange of square urceolus, diffuser flange and the left flange of bend loss, guaranteed each their mutual concentricity, prevent circular runout and guaranteed gap between impeller and urceolus.
Described square urceolus regular shape, left side are stuck in the right side draw-in groove of linkage section, realize rapid abutting joint, utilize the flange on square plexiglass urceolus right side to realize accurately location, utilize pull bar to be connected and fixed.
Streamline inwardly spreads in the wheel hub of described diffuser, structure shape rule, and performance not.
In order to realize better fast assembling-disassembling, convenient for maintaining detects, and impeller housing, diffuser outer wall are integrated, simple in structure; Utilize pull bar to be connected and fixed and connect section, pump case, diffuser and bend loss, greatly shortened the disassembly and assembly time of pump and saved the labour force.
The junction of linkage section and urceolus, urceolus and diffuser flange and diffuser flange and bend loss all is sealed with the O RunddichtringO, can stop the overflow in the urceolus, thereby forms sealing.
Compare with traditional mixed flow pump, the invention has the beneficial effects as follows: be simple in structure, easy to process, modularization, can realize rapid abutting joint, maintenance, easy to detect utilizes pull bar to be connected and fixed, easy accessibility, reduce the amount of labour, saved the time, utilize the concavo-convex chimeric concentricity that has guaranteed between parts between the flange plate, and prevented circular runout, guaranteed the gap between impeller and urceolus.The transparent urceolus of square plexiglass has reduced the refraction metaboly of pump housing external observation pump interior flow field, can use cavitation produces in the high-speed motion picture camera observation pump cavity position and development and blasting process.
Description of drawings
Below in conjunction with accompanying drawing and the present invention is further described.
Fig. 1 is the assembling schematic diagram (can be vertical also can be horizontal) of a kind of pull-rod type modularization of the present invention guide-vane diagonal pumps.
Fig. 2 is the schematic diagram of plexiglass and inlet tube linkage section.
Fig. 3 is the schematic diagram of square plexiglass urceolus.
Fig. 4 is that urceolus, diffuser flange, bend loss utilize the separately mutual concavo-convex chimeric schematic diagram of flange.
Among Fig. 1,1. plexiglass and inlet tube linkage section, 2. nut, 3. square plexiglass urceolus, 4. pull bar, 5. impeller blade, 6. impeller hub, 7. stator wheel hub, 8. stator blade, 9. streamlined floor, 10. pump shaft, 11.O RunddichtringO, 12. water guide cone, 13. fastening screw trip bolts, 14. screws, 15. pressing plates, 16. the left oil sealing of bearing, 17. deep groove ball bearings, the right oil sealing of 18. bearings, 19. diffuser flanges, 20. bend loss, 21. mechanical seals, 22. angular contact ball bearings, 23. coupling.
Embodiment
The present invention is further detailed explanation below in conjunction with accompanying drawing and embodiment.
As seen from Figure 1, these diagonal pumps are by urceolus and inlet tube linkage section (1), bolt structure heavy series hexagon nut (2), square urceolus (3), pull bar (4), impeller blade (5), impeller hub (6), stator wheel hub (7), stator blade (8), streamlined floor (9), pump shaft (10), O RunddichtringO (11), water guide cone (12), screw (13), slotted raised countersunk oval head screw (14), pressing plate (15), J type oil seal without framework (16) (18), bend loss (20), deep groove ball bearing (17), mechanical seal (21), the parts such as angular contact ball bearing (22) and coupling (23) form.By pressing plate (15) and slotted raised countersunk oval head screw (14) impeller blade (5) is fixed on the impeller hub (6), forms impeller; The end of diffuser flange (19) with streamlined floor (9) is welded and fixed, the other end of streamlined floor (9) and stator wheel hub (7) are fixing, stator blade (8) is also fixing with stator wheel hub (7), has jointly formed diffuser; Impeller, diffuser all are positioned at square urceolus (3); (12 fixing and impeller hubs (6) to impeller water inlet performance guide functions, can also be determined the axial position of impeller hub (6) on pump shaft (10) simultaneously to fastening screw trip bolt (13), play positioning action with water guide cone; The feed-water end of square urceolus (3) is stuck in the draw-in groove of linkage section (1), realize rapid abutting joint, the other end is by flange and diffuser flange (19), bend pipe flange, utilizes pull bar (4) and bolt structure accurately to locate with heavy series hexagon nut (2) and fixing; The stator wheel hub is in-built J type oil seal without framework (16) (18) and deep groove ball bearing (17), two oil sealings lay respectively at bearing (17) both sides, play waterproof, anti-impurity effect, if fear bearing rust, also bearing can be made of water-proofing material; The junction of linkage section and urceolus, urceolus and diffuser flange and diffuser flange and bend loss adopts the O RunddichtringO to seal; On bend loss (19) right side mechanical seal (21) and pair of horns contact ball bearing (22) are set, coupling (23) connects pump shaft (10) and motor output shaft.
The advantage of patent of the present invention: one, impeller housing and diffuser outer wall mold blocking, become one, be convenient to maintenance and detection, urceolus adopts square urceolus, section configuration inner circle foreign side, in-profile is similar to the overall profile of traditional mixed flow pump pump case, but outside regular shape, be beneficial to processing, save time; Can satisfy simultaneously and take position and development and the blasting process that the inner cavitation of pump produces cavity.Two, square urceolus left side can with linkage section draw-in groove rapid abutting joint, utilize the right side flange accurately to locate.Utilize pull bar to be connected and fixed inducer, square urceolus, diffuser flange and bend pipe flange, namely pull bar has replaced traditional screw, nut to cooperate link, makes pump structure simple, and easy accessibility has been saved the time greatly.Three, urceolus right side flange, diffuser flange and bend loss left side flange difference boss reasonable in design, so that can be concavo-convex chimeric between each flange, concentricity in the time of can guaranteeing to install well, the circular runout of diffuser and blade when also having prevented pump operation simultaneously, guarantee the gap between impeller and urceolus, guaranteed the stable operation of pump.
Claims (6)
1. pull-rod type modularization guide-vane diagonal pumps comprise impeller, diffuser, urceolus and inlet tube linkage section (1), square urceolus (3), pull bar (4), streamlined floor (9), pump shaft (10) and bend loss (19); Described square urceolus (3) docks by the draw-in groove on the linkage section with described linkage section (1); Described impeller, diffuser are all in square urceolus (3); Described impeller is fixedly connected with by fastening screw trip bolt (12) with described pump shaft (10), rotates with pump shaft; Between described square urceolus (3) and the bend loss (19) diffuser flange (18) is arranged; Described urceolus and inlet tube linkage section (1), square urceolus (3), diffuser flange (18) are connected and fixed by pull bar (4) with bend loss left side flange; Described square urceolus (3), diffuser and bend loss (19) utilize the concavo-convex chimeric concentricity that keeps of flange between them; Described impeller is fixed on the impeller hub (6) by pressing plate (14) and screw; Described diffuser is fixedly connected with formation by stator blade (8), stator wheel hub (7), streamlined floor (9) and diffuser flange (18).It is characterized in that: described square plexiglass urceolus (3) can be realized rapid abutting joint with the draw-in groove on linkage section (1) right side, connects diffuser flange (18) and bend pipe left side flange by pull bar, realizes accurately location.
2. a kind of pull-rod type modularization guide-vane diagonal pumps according to claim 1 is characterized in that, the modularization of impeller housing, diffuser outer wall becomes one, and can realize quick mounting, and maintenance, easy to detect is saved time.
3. a kind of pull-rod type modularization guide-vane diagonal pumps according to claim 1, it is characterized in that, the inducer of described square plexiglass urceolus (3) is straight, compares regular shape with traditional mixed flow pump pump case inducer projection, be convenient to processing, save time.
4. a kind of pull-rod type modularization guide-vane diagonal pumps according to claim 1, it is characterized in that, the flange on urceolus (3) right side, the flange in diffuser flange and bend loss (19) left side utilizes the concavo-convex chimeric concentricity of guaranteeing, prevent circular runout, and guaranteed the gap between impeller and the urceolus.
5. a kind of pull-rod type modularization guide-vane diagonal pumps according to claim 1 is characterized in that, described stator wheel hub (7) streamline inwardly spreads, and performance not.
6. a kind of pull-rod type modularization guide-vane diagonal pumps according to claim 1, it is characterized in that, described linkage section (1) has O RunddichtringO sealing with diffuser flange (18), diffuser flange (18) with the junction of bend loss (19) with square urceolus (3), square urceolus (3), when fast and easy is installed, also guaranteed the sealing of liquid in the pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101784172A CN103321911A (en) | 2013-05-03 | 2013-05-03 | Pull-rod modularized guide vane type diagonal flow pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101784172A CN103321911A (en) | 2013-05-03 | 2013-05-03 | Pull-rod modularized guide vane type diagonal flow pump |
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| CN103321911A true CN103321911A (en) | 2013-09-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013101784172A Pending CN103321911A (en) | 2013-05-03 | 2013-05-03 | Pull-rod modularized guide vane type diagonal flow pump |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105673553A (en) * | 2016-03-18 | 2016-06-15 | 江苏大学 | Diagonal flow pump |
| CN105805046A (en) * | 2016-01-25 | 2016-07-27 | 江苏大学 | Device for improving internal flow stability of diagonal flow pump |
| CN105909535A (en) * | 2016-04-18 | 2016-08-31 | 浙江理工大学 | Inducer visualization test experiment device |
| CN108692126A (en) * | 2018-04-13 | 2018-10-23 | 江苏大学 | A kind of mixed-flow pipeline heater based on electromagnetic induction |
| CN110056543A (en) * | 2019-06-05 | 2019-07-26 | 高邮环流泵业有限公司 | A kind of bend pipe |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB348032A (en) * | 1930-02-04 | 1931-05-04 | James Herbert Wainwright Gill | Improvements in or relating to rotors for axial flow hydraulic machines |
| CN201526507U (en) * | 2009-09-16 | 2010-07-14 | 上海连成（集团）有限公司 | 90 degree elbow structure for a submersible pump outlet capable of rotating at arbitrary angle |
| CN102312839A (en) * | 2011-09-02 | 2012-01-11 | 南方泵业股份有限公司 | Efficient high pressure-bearing horizontal multistage centrifugal pump |
| CN202789561U (en) * | 2012-04-10 | 2013-03-13 | 江苏大学 | Axial flow pump used for velocity measurement for particle picture |
-
2013
- 2013-05-03 CN CN2013101784172A patent/CN103321911A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB348032A (en) * | 1930-02-04 | 1931-05-04 | James Herbert Wainwright Gill | Improvements in or relating to rotors for axial flow hydraulic machines |
| CN201526507U (en) * | 2009-09-16 | 2010-07-14 | 上海连成（集团）有限公司 | 90 degree elbow structure for a submersible pump outlet capable of rotating at arbitrary angle |
| CN102312839A (en) * | 2011-09-02 | 2012-01-11 | 南方泵业股份有限公司 | Efficient high pressure-bearing horizontal multistage centrifugal pump |
| CN202789561U (en) * | 2012-04-10 | 2013-03-13 | 江苏大学 | Axial flow pump used for velocity measurement for particle picture |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105805046A (en) * | 2016-01-25 | 2016-07-27 | 江苏大学 | Device for improving internal flow stability of diagonal flow pump |
| CN105673553A (en) * | 2016-03-18 | 2016-06-15 | 江苏大学 | Diagonal flow pump |
| CN105909535A (en) * | 2016-04-18 | 2016-08-31 | 浙江理工大学 | Inducer visualization test experiment device |
| CN108692126A (en) * | 2018-04-13 | 2018-10-23 | 江苏大学 | A kind of mixed-flow pipeline heater based on electromagnetic induction |
| CN110056543A (en) * | 2019-06-05 | 2019-07-26 | 高邮环流泵业有限公司 | A kind of bend pipe |
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Application publication date: 20130925 |