CN104006002A - Balancing drum for multistage pump - Google Patents
Balancing drum for multistage pump Download PDFInfo
- Publication number
- CN104006002A CN104006002A CN201410260054.1A CN201410260054A CN104006002A CN 104006002 A CN104006002 A CN 104006002A CN 201410260054 A CN201410260054 A CN 201410260054A CN 104006002 A CN104006002 A CN 104006002A
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- CN
- China
- Prior art keywords
- balancing drum
- pump
- balancing
- multistage pump
- groove
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The invention relates to the technical field of mechanical engineering pumps, in particular to a balancing drum for a multistage pump. The balancing drum is provided with a balancing pump body, and is characterized in that an annular comb groove is formed in the outer surface of the balancing drum body in the axial direction, and the cross section of the comb groove is rectangular; when the pump operates, rotational flow is prevented from being generated in the clearance of an outer circle of the balancing drum, and the pump operating reliability is increased. Through the structure, the balancing drum has the advantages of being novel in structure, stable in operating, high in balancing performance and the like.
Description
Technical field
The present invention relates to mechanical engineering pump technical field, specifically a kind of balancing drum for multistage pump of multistage pump.
Background technique
As everyone knows, feed water pump is multistage centrifugal pump, when work, due to very large to pressure reduction between delivery side of pump and entrance, will produce like this one by outlet side (high pressure side) vertically to the end thrust of inlet side (low voltage side), under the effect of this end thrust, make to produce axial displacement to the rotor of pump, direction is also to have outlet side to move to inlet side, for balance is to the end thrust of pump generation in the time working, control axial displacement moving to pump, in the safety range of quiet gap, so balancing drum is being housed to after the high pressure side impeller of pump, the pressure of quoting high pressure side water outlet withstands and is contained in to balancing drum on pump rotor, and then the end thrust that produces during to pump work of balance, control axial displacement.High pressure water finally, by this balance tube, get back to the entrance to pump, and the outer surface of existing balancing drum is generally smooth outer surface, when balancing drum rotation, easily produce eddy flow at balancing drum outer rim gap location, thereby while causing multistage pump running, balancing drum balance quality is poor, running unstability.
Summary of the invention
The object of the invention is to solve above-mentioned the deficiencies in the prior art, provide that a kind of novel structure, running are stable, the balancing drum for multistage pump of the much higher level of balance quality pump.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of balancing drum for multistage pump of multistage pump, be provided with balancing drum body, it is characterized in that this external surface of balancing drum is provided with ring-type broach groove vertically, the transverse section of described broach groove is triangular in shape, in the time that pump turns round, avoid balancing drum cylindrical gap place to produce eddy flow, increased the reliability of pump operation.
The spacing of adjacent fingers groove of the present invention is unequal spacing, and the degree of depth of described adjacent fingers groove is not identical, has greatly offset the eddy flow of the on-stream generation of balancing drum.
The present invention is owing to adopting said structure, has that novel structure, running are stable, balance quality advantages of higher.
brief description of the drawings
Fig. 1 is the structural representation of prior art.
Fig. 2 is structural representation of the present invention.
Fig. 3 be in Fig. 2 B to or the sectional view of Z-direction.
Reference character: balancing drum body 1, broach groove 2.
Embodiment:
Below in conjunction with accompanying drawing, the present invention is further described:
As shown in drawings, a kind of balancing drum for multistage pump of multistage pump, be provided with balancing drum body 1, it is characterized in that balancing drum body 1 outer surface is provided with ring-type broach groove 2 vertically, the transverse section of described broach groove 2 is triangular in shape, in the time that pump turns round, avoid balancing drum cylindrical gap place to produce eddy flow, increase the reliability of pump operation.
The spacing of adjacent fingers groove 2 of the present invention is unequal spacing, and the degree of depth of described adjacent fingers groove 2 is not identical, has greatly offset the eddy flow of the on-stream generation of balancing drum.
Most preferred embodiment of the present invention: a kind of balancing drum for multistage pump of multistage pump, be provided with balancing drum body 1, described balancing drum body 1 outer surface is provided with ring-type broach groove 2 vertically, the transverse section of described broach groove 2 is triangular in shape, the spacing of described adjacent fingers groove 2 is unequal spacing, the degree of depth of described adjacent fingers groove 2 is not identical, greatly offset the eddy flow of the on-stream generation of balancing drum, in the time that pump turns round, eddy flow the stopping through broach groove 2 producing when balancing drum running, offset the eddy flow that balancing drum cylindrical gap place produces, increased the reliability of pump operation.
The present invention is owing to adopting said structure, has that novel structure, running are stable, balance quality advantages of higher.
Claims (2)
1. the balancing drum for multistage pump of multistage pump, is provided with balancing drum body, it is characterized in that this external surface of balancing drum is provided with ring-type broach groove vertically, and the transverse section of described broach groove is triangular in shape.
2. the balancing drum for multistage pump of a kind of grade of pump according to claim 1, the spacing that it is characterized in that adjacent fingers groove is unequal spacing, the degree of depth of described adjacent fingers groove is not identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410260054.1A CN104006002A (en) | 2014-06-12 | 2014-06-12 | Balancing drum for multistage pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410260054.1A CN104006002A (en) | 2014-06-12 | 2014-06-12 | Balancing drum for multistage pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104006002A true CN104006002A (en) | 2014-08-27 |
Family
ID=51366829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410260054.1A Pending CN104006002A (en) | 2014-06-12 | 2014-06-12 | Balancing drum for multistage pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104006002A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265675A (en) * | 2014-10-08 | 2015-01-07 | 中国船舶重工集团公司第七0四研究所 | Double-gap high-flow-resistance balance device |
| CN107178518A (en) * | 2017-07-06 | 2017-09-19 | 沈阳鼓风机集团石化泵有限公司 | A kind of centrifugal pump axial force balance mechanism |
| CN107956700A (en) * | 2017-12-16 | 2018-04-24 | 山东双轮股份有限公司 | Multistage pump throttling sealing waterline |
-
2014
- 2014-06-12 CN CN201410260054.1A patent/CN104006002A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265675A (en) * | 2014-10-08 | 2015-01-07 | 中国船舶重工集团公司第七0四研究所 | Double-gap high-flow-resistance balance device |
| CN107178518A (en) * | 2017-07-06 | 2017-09-19 | 沈阳鼓风机集团石化泵有限公司 | A kind of centrifugal pump axial force balance mechanism |
| CN107956700A (en) * | 2017-12-16 | 2018-04-24 | 山东双轮股份有限公司 | Multistage pump throttling sealing waterline |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140827 |
|
| WD01 | Invention patent application deemed withdrawn after publication |