CN102312840A - High pressure multistage centrifugal pump - Google Patents
High pressure multistage centrifugal pump Download PDFInfo
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- CN102312840A CN102312840A CN201110258257A CN201110258257A CN102312840A CN 102312840 A CN102312840 A CN 102312840A CN 201110258257 A CN201110258257 A CN 201110258257A CN 201110258257 A CN201110258257 A CN 201110258257A CN 102312840 A CN102312840 A CN 102312840A
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- impeller
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- centrifugal pump
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Abstract
The invention relates to a high pressure multistage centrifugal pump, which comprises a pump shaft, a water inlet section, a water outlet section, a return body, a pump base, a support plate, impellers, reverse impellers, a fluid director, forward guide vane groups and reverse guide vane groups, wherein a pressure-resistant cylinder of a motor end, the water inlet section, the water outlet section and the return body form a front cavity body, the pressure-resistant cylinder of a pump base end, the return body and the pump base form a rear cavity body, the water inlet section, the water outlet section and the support plate are tensioned and fixed through tension rods, the reverse impellers and the reverse guide vane groups are symmetrically arranged or are nearly symmetrically arranged to the impellers and the forward guide vane groups in the front cavity body and the rear cavity body of the two ends of the return body, wherein the numbers of the impellers and the forward guide vane groups are the same, and the numbers of the reverse impellers and the reverse guide vane groups are the same. The invention has the beneficial effects that: the high pressure multistage centrifugal pump can offset the axial force, a single shaft extends, the pump shaft is relatively shorter and thinner, a stamping welding part is adopted, the high pressure multistage centrifugal pump is effective, energy-saving, material-saving and light, the sealing reliability and the service life are improved, the high pressure multistage centrifugal pump has less leakage and high efficiency, the pump operational reliability is improved, and the installation and maintenance are facilitated.
Description
Technical field
The present invention relates to the centrifugal pump field, especially a kind of high-pressure multi-stage centrifugal pump.
Background technique
The multistage centrifugal pump of existing employing impeller symplex structure balancing axial thrust has disclosed technological scheme in the application publication numbers 200910032243.2; Forward impeller and stator group and reverse impeller and stator group adopt cast member and complete symmetric arrangement in this scheme; Water intake is connected with the water outlet flange not on same center line; Leak in the cavity before and after double take-off parts and bearing shell Spielpassung cause easily, and be inconvenient to assemble, two shaft extensions are arranged; Need former and later two sealings, pump shaft requires longer thicker.
Summary of the invention
The present invention will solve the shortcoming of above-mentioned existing technology, provides a kind of and is convenient to install, the shorter thinner high-pressure multi-stage centrifugal pump of pump shaft requirement.
The present invention solves the technological scheme that its technical problem adopts: this high-pressure multi-stage centrifugal pump; Comprise pump shaft, water inlet-outlet segment, reflux, pump seat, dunnage, impeller, anti-impeller, fluid director, forward stator group and reverse stator group; Motor side is withstand voltage, and tube constitutes preceding cavity with water inlet-outlet segment and reflux; The pump seat end is withstand voltage, and tube constitutes rear chamber with reflux and pump seat, and water inlet-outlet segment and dunnage are strained and fixed through pull bar, and anti-impeller, reverse stator group and impeller, forward stator group symmetric arrangement or near symmetrical are arranged in the cavity of front and back, reflux two ends; Wherein impeller is identical with the quantity of forward stator group, and anti-impeller is identical with the quantity of reverse stator group.
As preferably, impeller and anti-impeller symmetric arrangement when centrifugal pump progression is even number, impeller manyed one-level than anti-impeller when centrifugal pump progression was odd number.
As preferably, forward stator group comprises stator, water outlet stator, and reverse stator group comprises return guide vane, water outlet return guide vane, when forward stator group or reverse stator group have more than 2 grades, also comprises at interval the support stator that 1～3 grade of stator group correspondence is provided with or supports return guide vane.
As preferably, the tapered sleeve that anti-impeller is provided with cooperates with the impeller sleeve cone shape hole, and tapered sleeve has axially open, and tapered sleeve was strained and fixed on pump shaft through impeller nut and cooperating of its threaded end, and the symmetry plane otch is arranged on the impeller sleeve external diameter.
As preferably, support middle sleeve block that return guide vane is provided with through with the cooperating of impeller sleeve external diameter, follow anti-impeller and pump shaft and rotate.
As preferably, water outlet stator and water outlet return guide vane have the spiral guide vane that is uniformly distributed with space multistory, are provided with supporting base in its axis hole; Be provided with the stator axle sleeve in the supporting base; Stator axle sleeve and pump shaft Spielpassung, its water conservancy diversion loam cake expansion that stretches out on the port, outer extension mouth matches with the reflux inner flow passage.
As preferably, reflux lumen centers hole is provided with the sliding bearing II that cooperates with pump shaft.
As preferably, the cavity center of pump seat is provided with the pump shaft positioning hole groove, is provided with the sliding bearing I that cooperates with pump shaft in the pump shaft positioning hole groove, and pump shaft positioning hole groove one side is provided with the through hole of linking up the pump seat inner chamber.
As preferably, water inlet-outlet segment comprises intake pipe and outlet pipe, and its interface all adopts the cutting ferrule Placement.
As preferably, be provided with mechanical seal between intake pipe and the pump shaft.
Inventing useful effect is: the present invention can offset axial force, and single shaft is stretched, and pump shaft is compared shorter thinner, adopts the punching press weldment; Energy-efficient, material-saving is light and handy, improves the reliability and the life-span of sealing; Leak and lack the efficient height, improve the pump operation reliability, the convenient installation and maintenance.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Description of reference numerals: pump seat 1, pump shaft positioning hole groove 1-1, sliding bearing I1-2, dunnage 2, pull bar 3, fluid director 4; Impeller 5, stator 6 supports stator 7, the pump seat end is withstand voltage tube 8, water outlet stator 9, reflux 10; Sliding bearing II10-1, water outlet return guide vane 11, supporting base 11-1, stator axle sleeve 11-2, water conservancy diversion loam cake 11-3 supports return guide vane 12; Middle sleeve block 12-1, motor side is withstand voltage tube 13, anti-impeller 14, impeller sleeve 14-1, tapered sleeve 14-2, impeller nut 14-3; Return guide vane 15, water inlet-outlet segment 16, intake pipe 16-1, outlet pipe 16-2, mechanical seal 17, pump shaft 18.
Embodiment
Below in conjunction with accompanying drawing the present invention is described further:
Embodiment: like Fig. 1; This high-pressure multi-stage centrifugal pump; Comprise pump shaft 18, water inlet-outlet segment 16, reflux 10, pump seat 1, dunnage 2, impeller 5, anti-impeller 14, fluid director 4, forward stator group and reverse stator group, motor side is withstand voltage, and tube 13 constitutes preceding cavity with water inlet-outlet segment 16 and reflux 10, and the pump seat end is withstand voltage, and tube 8 constitutes rear chamber with reflux 10 and pump seat 1; Single withstand voltage tube by routine makes two withstand voltage tubes into, has improved withstand voltage tube crushing resistance.Water inlet-outlet segment 16 is strained and fixed through pull bar 3 with dunnage 2, and anti-impeller 14, reverse stator group are arranged in the cavity of front and back, reflux 10 two ends, with balancing axial thrust with impeller 5, forward stator group symmetric arrangement or near symmetrical.Impeller 5, anti-impeller 14, fluid director 4, forward stator group and reverse stator group are formed by steel plate punching press welding, have reduced cost of material, and wherein impeller 5 is identical with the quantity of forward stator group, and anti-impeller 14 is identical with the quantity of reverse stator group.
Impeller 5 and anti-impeller 14 symmetric arrangement in the present embodiment, the left and right sides everybody three grades.Forward stator group comprises stator 6, supports stator 7, water outlet stator 9, and reverse stator group comprises return guide vane 15, supports return guide vane 12, water outlet return guide vane 11.Forward stator group or reverse stator assembly have the support stator 7 of supporting structure or support return guide vane 12, can supporting & stablizing pump shaft 18.
The tapered sleeve 14-2 that anti-impeller 14 is provided with cooperates with impeller sleeve 14-1 cone shape hole; Tapered sleeve 14-2 has axially open; Tapered sleeve 14-2 through impeller nut 14-3 be strained and fixed cooperating of its threaded end on pump shaft 18, on the impeller sleeve 14-1 external diameter symmetry plane otch is arranged.Support middle sleeve block 12-1 that return guide vane 12 is provided with through with the cooperating of impeller sleeve 14-1 external diameter, follow anti-impeller 14 and pump shaft 18 rotates.Water outlet stator 9 has the spiral guide vane that is uniformly distributed with space multistory with water outlet return guide vane 11; Be provided with supporting base 11-1 in its axis hole; Be provided with stator axle sleeve 11-2 in the supporting base 11-1; Stator axle sleeve 11-2 and pump shaft 18 Spielpassung, its water conservancy diversion loam cake 11-3 expansion that stretches out on the port, outer extension mouth matches with reflux 10 inner flow passages.
Reflux 10 inner chambers have outer flow passage and inner flow passage, and the front outer flow passage is connected with the reverse side inner flow passage, and the front inner flow passage is connected with the reverse side outer flow passage; The front outer flow passage does not intersect with reverse side outer flow passage space parallel; Respectively account for half outer flow passage cavity region respectively, runner inside is symmetrical set a dividing plate, reinforces the support inner flow passage; Runner is wide, and is little to liquid resistance.Reflux 10 lumen centers holes are provided with the sliding bearing II10-1 that cooperates with pump shaft 18.
The cavity center of pump seat 1 is provided with pump shaft positioning hole groove 1-1; Support and stable pump shaft 18; Be provided with the sliding bearing I1-2 that cooperates with pump shaft 18 in the pump shaft positioning hole groove 1-1, avoided unsettled and pump shaft 18 swings that cause of pump shaft 18, guaranteed the coaxality of pump shaft 18; Pump shaft positioning hole groove 1-1 one side is provided with the through hole of linking up pump seat 1 inner chamber, and there is axle head power pump shaft 18 ends.
One end of pump shaft 18 passes with motor shaft from intake pipe 16-1 and is connected; Pump shaft 18 is provided with mechanical seal 17 with the joint of intake pipe 16-1; Mechanical seal 17 has reduced bearing the structural requirement of high pressure at low pressure area, has improved the reliability and the working life of sealing.Water inlet-outlet segment 16 comprises intake pipe 16-1 and outlet pipe 16-2, and its interface all adopts the cutting ferrule Placement, convenient and fast connection, and intake pipe 16-1 and outlet pipe 16-2 make things convenient for the pipeline mounting arrangements on same center line.
Except that the foregoing description, the present invention can also have other mode of executions.All employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop on the protection domain of requirement of the present invention.
Claims (10)
1. high-pressure multi-stage centrifugal pump; Comprise pump shaft (18), water inlet-outlet segment (16), reflux (10), pump seat (1), dunnage (2), impeller (5), anti-impeller (14), fluid director (4), forward stator group and reverse stator group; It is characterized in that: motor side is withstand voltage, and tube (13) constitutes preceding cavity with water inlet-outlet segment (16) and reflux (10); The pump seat end is withstand voltage, and tube (8) constitutes rear chamber with reflux (10) and pump seat (1); Water inlet-outlet segment (16) and dunnage (2) are strained and fixed through pull bar (3); Anti-impeller (14), reverse stator group and impeller (5), forward stator group symmetric arrangement or near symmetrical are arranged in the cavity of front and back, reflux (10) two ends; Impeller (5), anti-impeller (14), fluid director (4), forward stator group and reverse stator group are formed by steel plate punching press welding, and wherein impeller (5) is identical with the quantity of forward stator group, and anti-impeller (14) is identical with the quantity of reverse stator group.
2. high-pressure multi-stage centrifugal pump according to claim 1 is characterized in that: impeller when centrifugal pump progression is even number (5) and anti-impeller (14) symmetric arrangement, impeller when centrifugal pump progression is odd number (5) manys one-level than anti-impeller (14).
3. high-pressure multi-stage centrifugal pump according to claim 1 and 2; It is characterized in that: forward stator group comprises stator (6), water outlet stator (9); Reverse stator group comprises return guide vane (15), water outlet return guide vane (11); When forward stator group or reverse stator group have more than 2 grades, also comprise 1～3 grade of support stator (7) or support return guide vane (12) that stator group correspondence is provided with at interval.
4. high-pressure multi-stage centrifugal pump according to claim 1 and 2; It is characterized in that: the tapered sleeve (14-2) that anti-impeller (14) is provided with cooperates with impeller sleeve (14-1) cone shape hole; Tapered sleeve (14-2) has axially open; Tapered sleeve (14-2) has the symmetry plane otch through being strained and fixed impeller nut (14-3) and cooperating of its threaded end on pump shaft (18) on impeller sleeve (14-1) external diameter.
5. high-pressure multi-stage centrifugal pump according to claim 3 is characterized in that: support middle sleeve block (12-1) that return guide vane (12) is provided with through with the cooperating of impeller sleeve (14-1) external diameter, follow anti-impeller (14) and pump shaft (18) and rotate.
6. high-pressure multi-stage centrifugal pump according to claim 3; It is characterized in that: water outlet stator (9) and water outlet return guide vane (11) have the spiral guide vane that is uniformly distributed with space multistory; Be provided with supporting base (11-1) in its axis hole, be provided with stator axle sleeve (11-2) in the supporting base (11-1), stator axle sleeve (11-2) and pump shaft (18) Spielpassung; Its water conservancy diversion loam cake (11-3) expansion that stretches out on the port, outer extension mouth matches with reflux (10) inner flow passage.
7. high-pressure multi-stage centrifugal pump according to claim 3 is characterized in that: reflux (10) lumen centers hole is provided with the sliding bearing II (10-1) that cooperates with pump shaft (18).
8. high-pressure multi-stage centrifugal pump according to claim 3; It is characterized in that: the cavity center of pump seat (1) is provided with pump shaft positioning hole groove (1-1); Be provided with the sliding bearing I (1-2) that cooperates with pump shaft (18) in the pump shaft positioning hole groove (1-1), pump shaft positioning hole groove (1-1) side is provided with the through hole of linking up pump seat (1) inner chamber.
9. high-pressure multi-stage centrifugal pump according to claim 3 is characterized in that: water inlet-outlet segment (16) comprises intake pipe (16-1) and outlet pipe (16-2), and its interface all adopts the cutting ferrule linkage structure.
10. high-pressure multi-stage centrifugal pump according to claim 9 is characterized in that: be provided with mechanical seal (17) between intake pipe (16-1) and the pump shaft (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110258257A CN102312840A (en) | 2011-09-02 | 2011-09-02 | High pressure multistage centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110258257A CN102312840A (en) | 2011-09-02 | 2011-09-02 | High pressure multistage centrifugal pump |
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| CN102312840A true CN102312840A (en) | 2012-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110258257A Pending CN102312840A (en) | 2011-09-02 | 2011-09-02 | High pressure multistage centrifugal pump |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2600662C1 (en) * | 2015-09-17 | 2016-10-27 | Общество с ограниченной ответственностью "Нефтекамский машиностроительный завод" (ООО "НКМЗ") | Horizontal multistage sectional centrifugal pump unit |
| CN107013466A (en) * | 2015-12-02 | 2017-08-04 | 格兰富控股联合股份公司 | Multistage pump |
| CN108757491A (en) * | 2018-05-31 | 2018-11-06 | 金华金力士泵业有限公司 | A kind of water pump |
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| CN200964953Y (en) * | 2006-10-28 | 2007-10-24 | 浙江佳力科技股份有限公司 | Horizontal split multi-stage diffuser pump |
| CN201401338Y (en) * | 2009-03-23 | 2010-02-10 | 天津金星永恒电机有限公司 | Horizontal multi-stage stainless steel centrifugal pump |
| CN101922451A (en) * | 2009-06-09 | 2010-12-22 | 江苏双达工程技术研究中心有限公司 | Multistage centrifugal pump |
| CN201747615U (en) * | 2009-12-07 | 2011-02-16 | 上海天泉泵业集团有限公司 | Light centrifugal pump |
| EP2302201A2 (en) * | 2009-09-29 | 2011-03-30 | Hitachi Plant Technologies, Ltd. | Pump system having energy recovery apparatus |
| CN201843786U (en) * | 2010-10-19 | 2011-05-25 | 上海东方泵业(集团)有限公司 | Multistage shielding chemical pump with novel structure |
| CN202273912U (en) * | 2011-09-02 | 2012-06-13 | 南方泵业股份有限公司 | High pressure multistage centrifugal pump |
-
2011
- 2011-09-02 CN CN201110258257A patent/CN102312840A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200964953Y (en) * | 2006-10-28 | 2007-10-24 | 浙江佳力科技股份有限公司 | Horizontal split multi-stage diffuser pump |
| CN201401338Y (en) * | 2009-03-23 | 2010-02-10 | 天津金星永恒电机有限公司 | Horizontal multi-stage stainless steel centrifugal pump |
| CN101922451A (en) * | 2009-06-09 | 2010-12-22 | 江苏双达工程技术研究中心有限公司 | Multistage centrifugal pump |
| EP2302201A2 (en) * | 2009-09-29 | 2011-03-30 | Hitachi Plant Technologies, Ltd. | Pump system having energy recovery apparatus |
| CN201747615U (en) * | 2009-12-07 | 2011-02-16 | 上海天泉泵业集团有限公司 | Light centrifugal pump |
| CN201843786U (en) * | 2010-10-19 | 2011-05-25 | 上海东方泵业(集团)有限公司 | Multistage shielding chemical pump with novel structure |
| CN202273912U (en) * | 2011-09-02 | 2012-06-13 | 南方泵业股份有限公司 | High pressure multistage centrifugal pump |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2600662C1 (en) * | 2015-09-17 | 2016-10-27 | Общество с ограниченной ответственностью "Нефтекамский машиностроительный завод" (ООО "НКМЗ") | Horizontal multistage sectional centrifugal pump unit |
| CN107013466A (en) * | 2015-12-02 | 2017-08-04 | 格兰富控股联合股份公司 | Multistage pump |
| CN107013466B (en) * | 2015-12-02 | 2019-05-03 | 格兰富控股联合股份公司 | Multistage pump |
| CN108757491A (en) * | 2018-05-31 | 2018-11-06 | 金华金力士泵业有限公司 | A kind of water pump |
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Application publication date: 20120111 |