CN2844531Y - Axial-forced balancing disk unit for balanced sectional multi-stage pump - Google Patents
Axial-forced balancing disk unit for balanced sectional multi-stage pump Download PDFInfo
- Publication number
- CN2844531Y CN2844531Y CN 200520046327 CN200520046327U CN2844531Y CN 2844531 Y CN2844531 Y CN 2844531Y CN 200520046327 CN200520046327 CN 200520046327 CN 200520046327 U CN200520046327 U CN 200520046327U CN 2844531 Y CN2844531 Y CN 2844531Y
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- CN
- China
- Prior art keywords
- pump
- balance
- dividing plate
- communicated
- inner chamber
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- Expired - Fee Related
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Abstract
The utility model relates to a balance disk device for balancing the axial force of multistage pumps with separate sections, which is composed of a pump body and a pump shaft of a multistage pump, wherein the pump shaft is provided with an impeller and is fixedly provided with a balance disk. The balance disk is in a cylinder shape. The inner side of the pump body is provided with a partition board which is positioned between the balance disk and the impeller. A radial clearance is arranged between the partition board and the pump shaft. A first inner cavity is arranged between the partition board and the balance disk. The radial clearance is communicated with the first inner cavity. An axial clearance is arranged between the edge part of the balance disk and the partition board. The axial clearance is communicated with the first inner cavity. A second inner cavity is arranged between the rear side of the balance disk and the pump body. The axial clearance is communicated with the second inner cavity which is communicated with an inlet of the pump body through a pipeline. The utility model uses high pressure liquid in the front of the balance disk for balancing axial force generated by the impeller, and thus, the multistage pump can run steadily and reliably and has extended service life.
Description
Technical field:
The utility model relates to fluid conveying machine, relates in particular to pump, particularly multistage segmental type pump, and concrete is a kind of axially equilibrium of forces dish device of balance multistage segmental type pump that is used for.
Background technique:
Axial force is very big in the multistage segmental type pump, use thrust bearing to bear axial force in the prior art in multistage segmental type pump, its effect is undesirable, and general thrust bearing can not bear the axial force in the multistage segmental type pump, cause pump operation instability, unreliable, the life-span of pump reduces.
Summary of the invention:
The purpose of this utility model provides a kind of axially equilibrium of forces dish device of balance multistage segmental type pump that is used for, described this be used for the balance multistage segmental type pump axially equilibrium of forces dish device to solve the technical problem that thrust bearing in the prior art can not bear the axial force in the multistage segmental type pump.
Of the present utility model this be used for the balance multistage segmental type pump axially equilibrium of forces dish device constitute by the pump housing and the pump shaft of multistage pump, described pump shaft is arranged in the pump housing, at least be provided with an impeller on the described pump shaft, wherein, be set with a Balance disc on the described pump shaft, described Balance disc is cylindrical body, described pump housing inboard is provided with dividing plate, described dividing plate is between the rear side of the front side of Balance disc and impeller, be provided with radial clearance between described dividing plate and the pump shaft, be provided with first inner chamber between described dividing plate and the Balance disc, described radial clearance is communicated with first inner chamber, be provided with axial clearance between the edge part of described Balance disc and the dividing plate, described axial clearance is communicated with first inner chamber, is provided with second inner chamber between the rear side of described Balance disc and the pump housing, described axial clearance is communicated with second inner chamber, be provided with a pipeline in the pump housing, an end of described pipeline is communicated with second inner chamber, and the other end of pipeline is communicated with pump housing inlet.
Further, be provided with strengthening sleeve between described dividing plate and the pump shaft, described strengthening sleeve is fixedlyed connected with dividing plate, is provided with radial clearance between strengthening sleeve and the pump shaft.
Further, be provided with stiffening plate between described dividing plate and the Balance disc, described stiffening plate is fixedlyed connected with dividing plate, is provided with axial clearance between stiffening plate and the Balance disc.
Working principle of the present utility model is: the pressure in the pump housing, before the radial clearance is exactly the pressure at the impeller back side, and second inner chamber behind the Balance disc is communicated with the inlet of pump, and pressure wherein is near the inlet pressure of pump.There is pressure reduction between the pressure in the pressure before the radial clearance and second inner chamber, liquid is subjected to this differential pressure action, flow through radial clearance and enter first inner chamber, pressure descends, flow through axial clearance again and enter second inner chamber, pressure further descends and equals pressure in second inner chamber, and liquid flows to the inlet of pump at last.Because pressure is greater than pressure in second inner chamber in first inner chamber, liquid produces backward active force to Balance disc, and direction is opposite with axial force on the impeller.When the axial force on the impeller during greater than the suffered active force of Balance disc, pump rotor can move forward, axial clearance is reduced, increase the drag losses of liquid, thereby reduced the leakage rate of liquid, after leakage rate reduced, the pressure drop-out value that flow of liquid is crossed radial clearance reduced, thereby had improved the pressure in first inner chamber.The rising of the pressure in first inner chamber has increased the suffered active force of Balance disc.Rotor constantly moves forward, and the suffered active force of Balance disc also constantly increases, and during to some positions, suffered active force of Balance disc and axial force equate, reach balance.Equally, when axial force during less than equilibrant, rotor will move backward, and after moving a certain distance, the suffered active force of axial force and Balance disc reaches balance.
The utility model and prior art contrast, and its effect is actively with tangible.The utility model is provided with Balance disc on the pump shaft of multistage pump, the axial force of utilizing the preceding highly pressurised liquid balance impeller of Balance disc to produce makes the multistage pump stable and reliable operation, and the life-span prolongs.
Description of drawings:
Fig. 1 is the axially structural representation of equilibrium of forces dish device of balance multistage segmental type pump that is used for of the present utility model.
Embodiment:
As shown in Figure 1, of the present utility model be used for the balance multistage segmental type pump axially equilibrium of forces dish device constitute by the pump housing 1 and the pump shaft 2 of multistage pump, described pump shaft 2 is arranged in the pump housing 1, at least be provided with an impeller 3 on the described pump shaft 2, wherein, be set with a Balance disc 4 on the described pump shaft 2, described Balance disc 4 is cylindrical body, the described pump housing 1 inboard is provided with dividing plate 5, described dividing plate 5 is between the rear side of the front side of Balance disc 4 and impeller 3, be provided with radial clearance between described dividing plate 5 and the pump shaft 2, be provided with first inner chamber between described dividing plate 5 and the Balance disc 4, described radial clearance is communicated with first inner chamber, be provided with axial clearance between the edge part of described Balance disc 4 and the dividing plate 5, described axial clearance is communicated with first inner chamber, be provided with second inner chamber between the rear side of described Balance disc 4 and the pump housing 1, described axial clearance is communicated with second inner chamber, 1 is provided with a pipeline 6 in the pump housing, one end of described pipeline 6 is communicated with second inner chamber, and the other end of pipeline 6 is communicated with the pump housing 1 inlet.
Further, be provided with strengthening sleeve 7 between described dividing plate 5 and the pump shaft 2, described strengthening sleeve 7 is fixedlyed connected with dividing plate 5, is provided with radial clearance between strengthening sleeve 7 and the pump shaft 2.
Further, be provided with stiffening plate 8 between described dividing plate 5 and the Balance disc 4, described stiffening plate 8 is fixedlyed connected with dividing plate 5, is provided with axial clearance between stiffening plate 8 and the Balance disc 4.
Claims (3)
1. one kind is used for axially equilibrium of forces dish device of balance multistage segmental type pump, the pump housing and pump shaft by multistage pump constitute, described pump shaft is arranged in the pump housing, at least be provided with an impeller on the described pump shaft, it is characterized in that: be set with a Balance disc on the described pump shaft, described Balance disc is cylindrical body, described pump housing inboard is provided with dividing plate, described dividing plate is between the rear side of the front side of Balance disc and impeller, be provided with radial clearance between described dividing plate and the pump shaft, be provided with first inner chamber between described dividing plate and the Balance disc, described radial clearance is communicated with first inner chamber, be provided with axial clearance between the edge part of described Balance disc and the dividing plate, described axial clearance is communicated with first inner chamber, is provided with second inner chamber between the rear side of described Balance disc and the pump housing, described axial clearance is communicated with second inner chamber, be provided with a pipeline in the pump housing, an end of described pipeline is communicated with second inner chamber, and the other end of pipeline is communicated with pump housing inlet.
2. the axially equilibrium of forces dish device of balance multistage segmental type pump that is used for as claimed in claim 1, it is characterized in that: be provided with strengthening sleeve between described dividing plate and the pump shaft, described strengthening sleeve is fixedlyed connected with dividing plate, is provided with radial clearance between strengthening sleeve and the pump shaft.
3. the axially equilibrium of forces dish device of balance multistage segmental type pump that is used for as claimed in claim 1, it is characterized in that: be provided with stiffening plate between described dividing plate and the Balance disc, described stiffening plate is fixedlyed connected with dividing plate, is provided with axial clearance between stiffening plate and the Balance disc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520046327 CN2844531Y (en) | 2005-11-07 | 2005-11-07 | Axial-forced balancing disk unit for balanced sectional multi-stage pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520046327 CN2844531Y (en) | 2005-11-07 | 2005-11-07 | Axial-forced balancing disk unit for balanced sectional multi-stage pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2844531Y true CN2844531Y (en) | 2006-12-06 |
Family
ID=37486481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520046327 Expired - Fee Related CN2844531Y (en) | 2005-11-07 | 2005-11-07 | Axial-forced balancing disk unit for balanced sectional multi-stage pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2844531Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102312841A (en) * | 2011-09-09 | 2012-01-11 | 长沙天鹅工业泵股份有限公司 | Energy-saving multistage centrifugal pump with fixed clearance of balancing disc |
| CN109281860A (en) * | 2018-09-29 | 2019-01-29 | 四川德胜集团钒钛有限公司 | Balance device for water pump and balance method in high vanadium titanium steel production |
| CN109595173A (en) * | 2018-12-08 | 2019-04-09 | 烟台龙港泵业股份有限公司 | A kind of cantilever pump suitable for inlet high pressure |
| CN110925244A (en) * | 2019-12-13 | 2020-03-27 | 徐亮 | Low-noise shielding pump with axial force balance tube structure |
| CN112197972A (en) * | 2020-12-07 | 2021-01-08 | 中国航发上海商用航空发动机制造有限责任公司 | Axial force control device and axial force control method |
| CN114060286A (en) * | 2020-08-07 | 2022-02-18 | 日立安斯泰莫株式会社 | Two-stage centrifugal pump |
-
2005
- 2005-11-07 CN CN 200520046327 patent/CN2844531Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102312841A (en) * | 2011-09-09 | 2012-01-11 | 长沙天鹅工业泵股份有限公司 | Energy-saving multistage centrifugal pump with fixed clearance of balancing disc |
| CN109281860A (en) * | 2018-09-29 | 2019-01-29 | 四川德胜集团钒钛有限公司 | Balance device for water pump and balance method in high vanadium titanium steel production |
| CN109595173A (en) * | 2018-12-08 | 2019-04-09 | 烟台龙港泵业股份有限公司 | A kind of cantilever pump suitable for inlet high pressure |
| CN110925244A (en) * | 2019-12-13 | 2020-03-27 | 徐亮 | Low-noise shielding pump with axial force balance tube structure |
| CN114060286A (en) * | 2020-08-07 | 2022-02-18 | 日立安斯泰莫株式会社 | Two-stage centrifugal pump |
| CN114060286B (en) * | 2020-08-07 | 2023-09-22 | 日立安斯泰莫株式会社 | Two-stage centrifugal pump |
| CN112197972A (en) * | 2020-12-07 | 2021-01-08 | 中国航发上海商用航空发动机制造有限责任公司 | Axial force control device and axial force control method |
| CN112197972B (en) * | 2020-12-07 | 2021-02-26 | 中国航发上海商用航空发动机制造有限责任公司 | Axial force control device and axial force control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |