CN103352875A - Horizontal type self-balancing multistage centrifugal pump with high cavitation resistance - Google Patents
Horizontal type self-balancing multistage centrifugal pump with high cavitation resistance Download PDFInfo
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- CN103352875A CN103352875A CN2013102620856A CN201310262085A CN103352875A CN 103352875 A CN103352875 A CN 103352875A CN 2013102620856 A CN2013102620856 A CN 2013102620856A CN 201310262085 A CN201310262085 A CN 201310262085A CN 103352875 A CN103352875 A CN 103352875A
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- 239000000411 inducer Substances 0.000 claims abstract description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 230000005540 biological transmission Effects 0.000 claims abstract description 6
- 239000003344 environmental pollutant Substances 0.000 claims description 12
- 231100000719 pollutant Toxicity 0.000 claims description 12
- 238000013461 design Methods 0.000 claims description 6
- 230000000295 complement effect Effects 0.000 claims description 2
- 238000007789 sealing Methods 0.000 abstract description 6
- 230000000903 blocking effect Effects 0.000 abstract 1
- 230000006698 induction Effects 0.000 abstract 1
- 239000000126 substance Substances 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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Abstract
A horizontal type self-balancing multistage 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 flow guide sealing ring, a middle section, a front guide vane, a front final-stage guide vane, a water outlet section, a rear final-stage guide vane, a rear guide vane and a secondary induction section which are fixed through a tightening bolt assembly; the rotor component comprises a shaft, a shaft sleeve with two ends locked and fixed on the shaft through round nuts, an inducer, a first-stage impeller, a front impeller, an intermediate shaft sleeve, a rear impeller and a bearing and dirt blocking plate fixed through a bearing locking nut and a round nut; the first-stage impeller and the front impeller and the rear impeller are arranged symmetrically back to back; 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 a pump shaft and is connected with the shaft through keys for transmission; an axial direction fixes the inducer, the first-stage impeller, the front impeller and the rear impeller are fixed by the round nuts close to two ends in the axial direction; the flow guide sealing ring 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 self-balanced multiple-stage centrifugal pump.
Background technique
From the prior art, the multistage pump on the market mostly is chopped-off head single suction, the equidirectional arrangement of other impeller.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, and from design aspect, the design discharge of multistage pump strengthens, and inhales journey and will reduce, and problem of cavitation is the inevitable problem that at first solves.Sometimes medium contains a small amount of solid particle, easily balanced controls produce is destroyed, can't balancing axial thrust, and cause pump to damage, impact is normally used.
The self-balanced multiple-stage centrifugal pump that impeller is arranged symmetrically with also occurs in recent years, solved the problem of balancing axial thrust.But solving problem of cavitation still adopts first stage impeller to strengthen the method for impeller inlet area or first-stage double-absorption.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 first-stage double suction 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 the horizontal self-balanced multiple-stage centrifugal pump of a kind of high-cavitation-resistance energy, it has 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, and improve the suction journey, 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, the horizontal self-balanced multiple-stage centrifugal pump of a kind of high-cavitation-resistance energy of the present invention, comprise stator component and rotor part, stator component comprises by the fixing inlet segment of turnbuckle assembly, the inducer stage casing, the water conservancy diversion seal ring, the stage casing, pilot blade, front final stage stator, water exit end, rear final stage stator, rear guide vane, the secondary suction casing, rotor part comprises axle, be fixed on axle sleeve on the axle by two terminal circle nut check, inducer, first stage impeller, front impeller, middle axle sleeve, rear impeller and the bearing of fixing by bearing locking nut and round nut, pollutant baffle plate; Described first stage impeller and described front impeller and described rear impeller are to be arranged symmetrically with back-to-back, 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 pump shaft and by key and axle connection for transmission, axially by the two terminal circle nut described inducer, first stage impeller, front impeller and rear impeller are fixed; Described water conservancy diversion seal ring 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 described 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, described pollutant baffle plate is arranged on bearing part near the pump seal end, and pollutant baffle plate is installed on the axle, by locking nut, bearing, bearing interstage sleeve clamping and positioning, by key and axle connection for transmission.
Further, stator component comprises that also drive end bearing parts, non-driven-end bearing parts and stuffing box are separately fixed on inlet segment or the secondary suction casing by double-screw bolt or bolt.
Adopt this structure, because its first stage impeller and front impeller and rear guide vane are the back-to-back self-balance structures that is arranged symmetrically with, solve axial force balance mechanism and damaged the problem that affects the normal operation of pump, simultaneously 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 the horizontal self-balanced multiple-stage centrifugal pump of high-cavitation-resistance energy of filler-sealing type of the present invention;
Fig. 2 is the sectional view of the horizontal self-balanced multiple-stage centrifugal pump of high-cavitation-resistance energy of Mechanical Sealed Type of the present invention.
Label declaration
Axle 1 bearing locking nut 2
Drive end bearing parts 3 bearings 4
Pollutant baffle plate 5 round nuts 6
Axle sleeve 7 inducers 8
Water conservancy diversion seal ring 9 inlet segments 10
Inducer stage casing 11 first stage impellers 12
Pilot blade 13 stage casings 14
Front impeller 15 front final stage stators 16
Axle sleeve 19 in the middle of the water exit end 17
Rear final stage stator 20 rear impellers 21
Bearing 31 round nuts 32.
Embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail:
Fig. 1 is the sectional view of the horizontal self-balanced multiple-stage centrifugal pump of high-cavitation-resistance energy of filler-sealing type of the present invention, and the high-cavitation-resistance among Fig. 1 can comprise stator component and rotor part by horizontal multi-stage centrifugal pump.Stator component is comprised of component such as inlet segment 10, inducer stage casing 11, water conservancy diversion seal ring 9, stage casing 14, pilot blade 13, front final stage stator 16, water exit end 17, rear final stage stator 20, rear guide vane 22, secondary suction casing 23, stuffing box 26, drive end bearing parts 3, non-driven-end bearing parts 28.
Rotor part is comprised of axle 1, bearing locking nut 2, bearing 4, pollutant baffle plate 5, round nut 6, axle sleeve 7, inducer 8, first stage impeller 12, front impeller 15, middle axle sleeve 19, rear impeller 21, axle sleeve 27, round nut 29, pollutant baffle plate 30, bearing 31 and round nut 32.
Axle sleeve 7, inducer 8, first stage impeller 12, front impeller 15, middle axle sleeve 19, rear impeller 21, axle sleeve 27 are locked on axle 1 by two terminal circle nut 6 and round nut 29.Pollutant baffle plate 5, round nut 6, pollutant baffle plate 30, bearing 31 are fixed on the axle 1 by bearing locking nut 2 and round nut 32 respectively.
Because its first stage impeller and front impeller are the self-balance structures that is arranged symmetrically with back-to-back with rear guide vane all, have solved axial force balance mechanism and damaged the problem that affects the normal operation of pump.The first stage impeller 12 of pump is for strengthening the anti-cavitation impeller of inlet-duct area method design.Be furnished with the inducer 8 that matches before the first stage impeller 12, inducer 8 and first stage impeller 12 are fixed on the pump shaft and by key and axle 1 connection for transmission, axial dimension is fixing by two terminal circle nut 6 and round nut 29.Inducer designs according to the performance of first stage impeller, and its conveyance capacity is 1.2-1.4 times of first stage impeller.The profile of inducer is cylindrical screw shape.The structure of inducer is uniform pitch or variable pitch formula, has two or three blades.Inducer 8 outsides are provided with the water conservancy diversion seal ring 9 with chopped-off head seal ring function, and the two ends of water conservancy diversion seal ring 9 are separately fixed on inducer stage casing 11 and the inlet segment 10.Inducer 8 is used in conjunction with first stage impeller 12, and inducer 8 anti-cavitation performances own are better, and produce certain pressure, reduce the net positive suction head of first stage impeller 12.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.
Fig. 2 is the sectional view of the horizontal self-balanced multiple-stage centrifugal pump of high-cavitation-resistance energy of Mechanical Sealed Type of the present invention.It is that sealing means is different from the difference of Fig. 1, and corresponding axle sleeve 7 structures change to some extent, and other stators are all identical with rotor part.
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 (7)
1. a high-cavitation-resistance can horizontal self-balanced multiple-stage centrifugal pump, comprise stator component and rotor part, stator component comprises inlet segment, inducer stage casing, water conservancy diversion seal ring, stage casing, pilot blade, front final stage stator, water exit end, rear final stage stator, rear guide vane, the secondary suction casing of fixing by the turnbuckle assembly, and rotor part comprises axle, is fixed on axle sleeve, inducer, first stage impeller, front impeller, middle axle sleeve, the rear impeller on the axle and bearing, the pollutant baffle plate of fixing by bearing locking nut and round nut by two terminal circle nut check; It is characterized in that: described first stage impeller and described front impeller and described rear impeller are to be arranged symmetrically with back-to-back, 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 pump shaft and by key and axle connection for transmission, axially by the two terminal circle nut described inducer, first stage impeller, front impeller and rear impeller are fixed; Described water conservancy diversion seal ring 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 self-balanced multiple-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 self-balanced multiple-stage centrifugal pump, and it is characterized in that: described inducer designs according to described first stage impeller, its conveyance capacity be described first stage impeller 1.2-1.4 doubly.
4. high-cavitation-resistance as claimed in claim 2 can horizontal self-balanced multiple-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 self-balanced multiple-stage centrifugal pump, and it is characterized in that: the structure of described inducer is uniform pitch or variable pitch formula, has two or three blades.
6. high-cavitation-resistance as claimed in claim 1 can horizontal self-balanced multiple-stage centrifugal pump, it is characterized in that: described pollutant baffle plate is arranged on bearing part near the pump seal end, described pollutant baffle plate is installed on the described axle, by locking nut, bearing, bearing interstage sleeve clamping and positioning, by key and axle connection for transmission.
7. high-cavitation-resistance as claimed in claim 1 can horizontal self-balanced multiple-stage centrifugal pump, and it is characterized in that: stator component comprises that also drive end bearing parts, non-driven-end bearing parts and stuffing box are separately fixed on described inlet segment or the described secondary suction casing by double-screw bolt or bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102620856A CN103352875A (en) | 2013-06-27 | 2013-06-27 | Horizontal type self-balancing multistage centrifugal pump with high cavitation resistance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102620856A CN103352875A (en) | 2013-06-27 | 2013-06-27 | Horizontal type self-balancing multistage centrifugal pump with high cavitation resistance |
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| CN103352875A true CN103352875A (en) | 2013-10-16 |
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| CN2013102620856A Pending CN103352875A (en) | 2013-06-27 | 2013-06-27 | Horizontal type self-balancing multistage centrifugal pump with high cavitation resistance |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953583A (en) * | 2014-04-04 | 2014-07-30 | 上海第一水泵厂有限公司 | Horizontal self-balanced centrifugal pump with first-stage compound impeller |
| 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 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2276287C1 (en) * | 2005-03-16 | 2006-05-10 | Владимир Дмитриевич Анохин | Multistage centrifugal pump |
| CN201377434Y (en) * | 2009-04-18 | 2010-01-06 | 赵景权 | Mining horizontal type multistage pump with high suction lift |
| CN201972929U (en) * | 2011-03-10 | 2011-09-14 | 赵景权 | Flow rate and lift variable type self-balancing axial force multistage centrifugal pump |
| CN102758775A (en) * | 2012-07-19 | 2012-10-31 | 扬州华尔机泵制造有限公司 | Axial force self-balancing multistage centrifugal pump |
| CN203348177U (en) * | 2013-06-27 | 2013-12-18 | 上海第一水泵厂有限公司 | Horizontal type self-balancing multiple-stage centrifugal pump with high-cavitation-resistant performance |
-
2013
- 2013-06-27 CN CN2013102620856A patent/CN103352875A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2276287C1 (en) * | 2005-03-16 | 2006-05-10 | Владимир Дмитриевич Анохин | Multistage centrifugal pump |
| CN201377434Y (en) * | 2009-04-18 | 2010-01-06 | 赵景权 | Mining horizontal type multistage pump with high suction lift |
| CN201972929U (en) * | 2011-03-10 | 2011-09-14 | 赵景权 | Flow rate and lift variable type self-balancing axial force multistage centrifugal pump |
| CN102758775A (en) * | 2012-07-19 | 2012-10-31 | 扬州华尔机泵制造有限公司 | Axial force self-balancing multistage centrifugal pump |
| CN203348177U (en) * | 2013-06-27 | 2013-12-18 | 上海第一水泵厂有限公司 | Horizontal type self-balancing multiple-stage centrifugal pump with high-cavitation-resistant performance |
Non-Patent Citations (1)
| Title |
|---|
| 成心德: "《叶片式泵·通风机·压缩机（原理、设计、运行、强度）》", 31 July 2011, article "叶片式泵·通风机·压缩机（原理、设计、运行、强度）", pages: 140 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953583A (en) * | 2014-04-04 | 2014-07-30 | 上海第一水泵厂有限公司 | Horizontal self-balanced centrifugal pump with first-stage compound impeller |
| 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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| PB01 | Publication | ||
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Application publication date: 20131016 |