CN103352876A - Horizontal multi-stage centrifugal pump with high cavitation resistance - Google Patents
Horizontal multi-stage centrifugal pump with high cavitation resistance Download PDFInfo
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- CN103352876A CN103352876A CN2013102712881A CN201310271288A CN103352876A CN 103352876 A CN103352876 A CN 103352876A CN 2013102712881 A CN2013102712881 A CN 2013102712881A CN 201310271288 A CN201310271288 A CN 201310271288A CN 103352876 A CN103352876 A CN 103352876A
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Abstract
A horizontal multi-stage centrifugal pump with high cavitation resistance comprises a stator component and a rotor component, wherein the stator component comprises a water inlet section, an inducer middle section, a middle section, a guide vane, a final-stage guide vane, a flow guide sealing ring, a water outlet section, a stuffing box, an equilibrium ring, a left bearing component and a right bearing component; the rotor component comprises a shaft, a first bearing locking nut, an inducer, a first-stage impeller, an impeller, an impeller spacer sleeve, a balance disc spacer sleeve, a balance disc, a shaft sleeve, a bearing spacer sleeve, a bearing and a second bearing locking nut; the rotor component is fixed through the bearing locking nuts at the two ends; the inducer matched with the first-stage impeller is equipped in front of the first-stage impeller; the inducer and the first-stage impeller are fixed on the shaft and is connected with the shaft through keys for transmission; the first bearing locking nut and the second bearing locking nut close to two ends are fixed in the axial direction; the flow guide sealing ring has a function of a first-stage sealing ring and is arranged on the outer side of the inducer; and the two ends of the flow guide sealing ring are fixed at the inducer middle section and the water inlet section respectively.
Description
Technical field
The present invention relates to a kind of multistage centrifugal pump, particularly a kind of be applicable to conveying water, the chemical medium such as mine, chemical industry, power plant or contain a kind of high-cavitation-resistance of the medium of a small amount of solid particle can horizontal multi-stage centrifugal pump.
Background technique
From the prior art, along with the scale of mine, power plant and chemical plant installations constantly enlarges, water pump is constantly towards large flow, high-lift future development, from design aspect, the design discharge of pump strengthens, inhaling journey will reduce, and problem of cavitation is the inevitable problem that at first solves.In order to improve water pump suction lift, reducing cavitation occurs, adopt the first stage impeller of large import, but it is limited to put forward the high suction depth value, can not satisfy usage requirement, still has cavitation phenomenons to occur, affect the working life of pump, adopt the double suction first stage impeller can carry high suction depth, but its structure is comparatively complicated, and maintenance is inconvenient.
Summary of the invention
The object of the present invention is to provide a kind of high-cavitation-resistance energy horizontal multi-stage centrifugal pump, it has the high-cavitation-resistance energy, has lower necessary net positive suction head, can satisfy the requirement of the lower device net positive suction head of user, avoid the damage of cavitation phenomenons to pump, and the suction journey that has improved pump, and its compactness rational in infrastructure, simple, axial dimension is little, operates steadily, safe and reliable, and installation, maintenance is easy to detect quick.
For achieving the above object, a kind of high-cavitation-resistance energy of the present invention horizontal multi-stage centrifugal pump, comprise stator component and rotor part, stator component comprises inlet segment, the inducer stage casing, the stage casing, stator, the final stage stator, the water conservancy diversion seal ring, water exit end, stuffing box, gimbal, the left bearing parts, the right bearing parts, wherein said inlet segment, the inducer stage casing, the stage casing, stator, the final stage stator, the water conservancy diversion seal ring, water exit end is fixed by turnbuckle and nut, described left bearing parts and right bearing parts, stuffing box by double-screw bolt be bolted to inlet segment or water exit end on; Rotor part comprises axle, clutch shaft bearing locknut, inducer, first stage impeller, impeller, impeller interstage sleeve, Balance disc interstage sleeve, Balance disc, axle sleeve, bearing interstage sleeve, bearing, the second bearing locking nut, and rotor part is fixed by clutch shaft bearing locknut and second bearing locking nut at two ends; Is furnished with the described inducer that is complementary with it before the described first stage impeller, described inducer and described first stage impeller are fixed on the axle and by key and axle connection for transmission, axially fix by two ends clutch shaft bearing locknut and the second bearing locking nut, described water conservancy diversion seal ring has chopped-off head seal ring function and is arranged on the described inducer outside, and the two ends of described water conservancy diversion seal ring are separately fixed on described inducer stage casing and the described inlet segment.
Further, described first stage impeller is the impeller of the anti-cavitation of increasing inlet-duct area.
Further, described inducer designs according to first stage impeller, and its conveyance capacity is 1.2-1.4 times of first stage impeller.
Further, the profile of described inducer is cylindrical screw shape.
Further, the structure of described inducer is uniform pitch or variable pitch formula, has two or three blades.
Further, flushing in the medium is adopted in suction side filler flushing, its flushing medium enters the cavity that described inducer stage casing, inlet segment and water conservancy diversion seal ring form by the flushing hole on the inducer stage casing, through the interior flushing hole on the inlet segment packing cavity is washed again lubricatedly, prevent that air from entering pump chamber when reducing the packing cavity temperature.
Adopt above-mentioned structure, because the structure that adopts inducer, first stage impeller and water conservancy diversion seal ring to match, make pump have the high-cavitation-resistance energy, lower necessary net positive suction head is arranged, can satisfy the requirement of the lower device net positive suction head of user, avoid the damage of cavitation phenomenons to pump, effectively prolonged the working life of pump.Some mines, chemical industry have been solved, the problem of the device pump cavitation that power plant etc. have relatively high expectations to cavitation performance.Have simultaneously compactness rational in infrastructure, simple, axial dimension is little, operates steadily, safe and reliable the installation, maintenance characteristics such as quick easy to detect.
Description of drawings
Fig. 1 is the sectional view of high-cavitation-resistance energy horizontal multi-stage centrifugal pump of the present invention.
Label declaration
Axle 1 clutch shaft bearing locknut 2
Left bearing parts 3 inducers 4
Inlet segment 5 water conservancy diversion seal rings 6
Inducer stage casing 7 first stage impellers 8
Stator 9 stage casings 10
Impeller 11 impeller interstage sleeves 12
Right bearing parts 19 axle sleeves 20
Bearing interstage sleeve 21 bearings 22
The second bearing locking nut 23 nuts 24
Turnbuckle 25.
Embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail:
Fig. 1 is the sectional view of high-cavitation-resistance energy horizontal multi-stage centrifugal pump of the present invention, and high-cavitation-resistance can comprise stator component and rotor part by horizontal multi-stage centrifugal pump.Stator component is comprised of component such as inlet segment 5, inducer stage casing 7, stage casing 10, stator 9, final stage stator 13, water conservancy diversion seal ring 6, water exit end 15, stuffing box 18, gimbal 16, left bearing parts 3, right bearing parts 19, inlet segment 5, inducer stage casing 7, stage casing 10, stator 9, final stage stator 13, water conservancy diversion seal ring 6, water exit end 15 are fixed by turnbuckle 25 and nut 24, left bearing parts 3 and right bearing parts 19, stuffing box 18 grades by double-screw bolt be bolted to inlet segment 5 or water exit end 15 on; Rotor part is comprised of component such as axle 1, bearing locking nut 2, inducer 4, first stage impeller 8, impeller 11, impeller interstage sleeve 12, Balance disc interstage sleeve 14, Balance disc 17, axle sleeve 20, bearing interstage sleeve 21, bearing 22, bearing locking nuts 23, and rotor part is fixed by the bearing locking nut 2 and 23 at two ends.
The first stage impeller 8 of high-cavitation-resistance energy horizontal multi-stage centrifugal pump is for strengthening the anti-cavitation design impeller of inlet-duct area, is furnished with the inducer 4 that is complementary with it before the first stage impeller 8, inducer 4 and first stage impeller 8 are fixed on the pump shaft and by key and axle 1 connection for transmission, axially fix by bearings at both ends nut 2; Inducer 4 outsides are provided with the water conservancy diversion seal ring 6 with chopped-off head seal ring function, and the two ends of water conservancy diversion seal ring 6 are separately fixed on inducer stage casing 7 and the inlet segment 5.
Flushing in the medium is adopted in suction side filler flushing, its flushing medium enters the cavity that inducer stage casing 7, inlet segment 5 and water conservancy diversion seal ring 6 form by the flushing hole on the inducer stage casing 7, through the interior flushing hole on the inlet segment 5 packing cavity is washed again lubricatedly, prevent that air from entering pump chamber when reducing the packing cavity temperature.
Inducer 4 is used in conjunction with first stage impeller 8, and inducer 4 anti-cavitation performances own are better, and produce certain pressure, reduce the net positive suction head of first stage impeller 8.Thereby greatly improve the anti-cavitation performance of pump, avoided the damage of cavitation phenomenons to pump, effectively prolonged the working life of pump.Some mines, chemical industry have been solved, the problem of the device pump cavitation that power plant etc. have relatively high expectations to cavitation performance.
Although most preferred embodiment of the present invention has illustrated purposes, those skilled in the art can not break away from the scope of its specification and the spirit of invention is carried out different modifications, replenishes and substituted.And embodiments of the invention are just in order to illustrate technological thought scope of the present invention, rather than only only limit to embodiments of the invention.
Claims (6)
1. a high-cavitation-resistance can horizontal multi-stage centrifugal pump, comprise stator component and rotor part, stator component comprises inlet segment, inducer stage casing, stage casing, stator, final stage stator, water conservancy diversion seal ring, water exit end, stuffing box, gimbal, left bearing parts, right bearing parts, wherein said inlet segment, inducer stage casing, stage casing, stator, final stage stator, water conservancy diversion seal ring, water exit end etc. are fixed by turnbuckle and nut, described left bearing parts and right bearing parts, stuffing box by double-screw bolt be bolted to inlet segment or water exit end on; Rotor part comprises axle, the clutch shaft bearing locknut, inducer, first stage impeller, impeller, the impeller interstage sleeve, the Balance disc interstage sleeve, Balance disc, axle sleeve, the bearing interstage sleeve, bearing, the second bearing locking nut, rotor part is fixed by clutch shaft bearing locknut and second bearing locking nut at two ends, it is characterized in that: be furnished with the described inducer that is complementary with it before the described first stage impeller, described inducer and described first stage impeller are fixed on the axle and by key and axle connection for transmission, axially fix by clutch shaft bearing locknut and second bearing locking nut at two ends, described water conservancy diversion seal ring has chopped-off head seal ring function and is arranged on the described inducer outside, and the two ends of described water conservancy diversion seal ring are separately fixed on described inducer stage casing and the described inlet segment.
2. high-cavitation-resistance as claimed in claim 1 can horizontal multi-stage centrifugal pump, it is characterized in that: described first stage impeller is the impeller of the anti-cavitation that strengthens inlet-duct area.
3. high-cavitation-resistance as claimed in claim 2 can horizontal multi-stage centrifugal pump, and it is characterized in that: described inducer designs according to the first stage impeller performance, its conveyance capacity be first stage impeller 1.2-1.4 doubly.
4. high-cavitation-resistance as claimed in claim 2 can horizontal multi-stage centrifugal pump, and it is characterized in that: the profile of described inducer is cylindrical screw shape.
5. high-cavitation-resistance as claimed in claim 2 can horizontal multi-stage centrifugal pump, and it is characterized in that: the structure of described inducer is uniform pitch or variable pitch type, has two or three blades.
6. high-cavitation-resistance as claimed in claim 1 can horizontal multi-stage centrifugal pump, it is characterized in that: flushing in the medium is adopted in filler flushing in suction side, its flushing medium enters the cavity that described inducer stage casing, inlet segment and water conservancy diversion seal ring form by the flushing hole on the inducer stage casing, through the interior flushing hole on the inlet segment packing cavity is washed again lubricatedly, prevent that air from entering pump chamber when reducing the packing cavity temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102712881A CN103352876A (en) | 2013-06-27 | 2013-07-01 | Horizontal multi-stage centrifugal pump with high cavitation resistance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310262227.9 | 2013-06-27 | ||
| CN201310262227 | 2013-06-27 | ||
| CN2013102712881A CN103352876A (en) | 2013-06-27 | 2013-07-01 | Horizontal multi-stage centrifugal pump with high cavitation resistance |
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| CN103352876A true CN103352876A (en) | 2013-10-16 |
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| CN2013102712881A Pending CN103352876A (en) | 2013-06-27 | 2013-07-01 | Horizontal multi-stage centrifugal pump with high cavitation resistance |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104728124A (en) * | 2015-04-20 | 2015-06-24 | 杨海霞 | Multi-stage centrifugal pump |
| CN104791253A (en) * | 2015-04-20 | 2015-07-22 | 杨海霞 | Novel multistage centrifugal pump |
| CN109185217A (en) * | 2018-11-28 | 2019-01-11 | 无锡艾比德泵业有限公司 | A kind of suction inlet is the water inlet segment structure of the centrifugal multistage pump multiple centrifugal pump of fish mouth type |
| CN109488602A (en) * | 2018-12-21 | 2019-03-19 | 上海邦浦实业集团有限公司 | A kind of high salt tolerant BPMC type horizontal multi-stage centrifugal pump mentioning lithium applied to salt lake embrane method |
| CN111980930A (en) * | 2020-08-10 | 2020-11-24 | 大连双龙泵业制造有限公司 | Novel inducer segment guide vane type multistage centrifugal pump |
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| US3361073A (en) * | 1964-10-30 | 1968-01-02 | Sulzer Ag | Casing for multi-stage centrifugal pump |
| CN101545491A (en) * | 2009-05-04 | 2009-09-30 | 上海奥利泵业制造有限公司 | Boiler water-feeding pump |
| CN201377434Y (en) * | 2009-04-18 | 2010-01-06 | 赵景权 | Mining horizontal type multistage pump with high suction lift |
| CN201428643Y (en) * | 2009-07-09 | 2010-03-24 | 西安泵阀总厂有限公司 | Sealed cycle structure of medium self-flushing machine |
| CN203374532U (en) * | 2013-06-27 | 2014-01-01 | 上海第一水泵厂有限公司 | High-cavitation-resistant-performance horizontal multi-stage centrifugal pump |
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2013
- 2013-07-01 CN CN2013102712881A patent/CN103352876A/en active Pending
Patent Citations (5)
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| US3361073A (en) * | 1964-10-30 | 1968-01-02 | Sulzer Ag | Casing for multi-stage centrifugal pump |
| CN201377434Y (en) * | 2009-04-18 | 2010-01-06 | 赵景权 | Mining horizontal type multistage pump with high suction lift |
| CN101545491A (en) * | 2009-05-04 | 2009-09-30 | 上海奥利泵业制造有限公司 | Boiler water-feeding pump |
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| 成心德: "《叶片式泵·通风机·压缩机（原理、设计、运行、强度）》", 31 July 2011, 机械工业出版社 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104728124A (en) * | 2015-04-20 | 2015-06-24 | 杨海霞 | Multi-stage centrifugal pump |
| CN104791253A (en) * | 2015-04-20 | 2015-07-22 | 杨海霞 | Novel multistage centrifugal pump |
| CN104791253B (en) * | 2015-04-20 | 2017-04-12 | 江苏庆海石油机械有限公司 | Multistage centrifugal pump |
| CN109185217A (en) * | 2018-11-28 | 2019-01-11 | 无锡艾比德泵业有限公司 | A kind of suction inlet is the water inlet segment structure of the centrifugal multistage pump multiple centrifugal pump of fish mouth type |
| CN109488602A (en) * | 2018-12-21 | 2019-03-19 | 上海邦浦实业集团有限公司 | A kind of high salt tolerant BPMC type horizontal multi-stage centrifugal pump mentioning lithium applied to salt lake embrane method |
| CN111980930A (en) * | 2020-08-10 | 2020-11-24 | 大连双龙泵业制造有限公司 | Novel inducer segment guide vane type multistage centrifugal pump |
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Application publication date: 20131016 |
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