CN203847394U - Self-balancing multistage centrifugal pump with balanced cooling structure - Google Patents
Self-balancing multistage centrifugal pump with balanced cooling structure Download PDFInfo
- Publication number
- CN203847394U CN203847394U CN201420197818.2U CN201420197818U CN203847394U CN 203847394 U CN203847394 U CN 203847394U CN 201420197818 U CN201420197818 U CN 201420197818U CN 203847394 U CN203847394 U CN 203847394U
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- China
- Prior art keywords
- bearing
- mechanical seal
- axle
- centrifugal pump
- bearing body
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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.)
- Expired - Lifetime
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 52
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000010791 quenching Methods 0.000 claims description 22
- 238000007789 sealing Methods 0.000 abstract description 9
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 238000011010 flushing procedure Methods 0.000 abstract description 3
- 210000004907 gland Anatomy 0.000 abstract 2
- 239000008041 oiling agent Substances 0.000 description 7
- 239000000498 cooling water Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000000110 cooling liquid Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a self-balancing multistage centrifugal pump with a balanced cooling structure. The self-balancing multistage centrifugal pump comprises an operating cavity, a shaft, a shaft bushing, a mechanical sealing gland, a front bearing and a rear bearing, wherein the mechanical sealing gland is provided with a mechanical sealing flushing hole and a mechanical sealing chilling and cooling cavity, the upper ends of the front bearing and the rear bearing are provided with upper bearing connecting ribs, the lower ends of the front bearing and the rear bearing are provided with lower bearing connecting ribs, the lower bearing connecting ribs are arranged below the mechanical sealing chilling and cooling cavity, the mechanical sealing chilling and cooling cavity is provided with a chilling water inlet and a chilling water outlet, and the upper bearing connecting ribs are provided with upper bearing connecting rib cooling cavities. The self-balancing multistage centrifugal pump is simple and reasonable in structure and capable of reducing energy consumption of users and prolonging service lives of bearings.
Description
Technical field
The utility model relates to centrifugal pump technical field, is specially a kind of self-balanced multiple-stage centrifugal pump with balanced cooling structure.
Background technique
Self-balanced multiple-stage centrifugal pump of the prior art has that performance range is wide, application is extensive, working efficiency is high and high reliability, is obviously better than common multistage centrifugal pump, is progressively replacing common multistage centrifugal pump.
But existing self-balanced multiple-stage centrifugal pump exists bearing while carrying high-temp liquid (as boiler feed water) to hold flimsy problem, by analysis and to consult related data known, complicated and unreasonable the causing by cooling structure.In existing structure, generally in the both sides of axle, sealing cooling chamber is set respectively, and at front end bearing support and rear end bearing body place, bearing support cooling chamber is set respectively, complex structure and unreasonable, and there are problems, when cooling, in sealing cooling chamber, pass into cooling water, though can stop like this heat conduction to bearing from fed sheet of a media, but the cooling effect to axle and axle sleeve is limited, and can reduce the temperature of fed sheet of a media, increase user's energy consumption, and coming self-pumping high pressure side, after cooler is cooling, to be injected into the temperature of fed sheet of a media of Seal cage still higher, therefore, warp beam and axle sleeve are still enough to cause that to the heat of bearing conduction the excessive thermal expansion of axle and the temperature rise of bearing excessively increase, and the cooling water now passing in bearing support cooling chamber, though can reduce the temperature of bearing outer ring, but the side effect one causing is the cold contraction that causes bearing outer ring, the 2nd, the water vapor in bearing chamber can be condensed into water, enter oiling agent, cause oiling agent premature failure, the shrinkage of bearing outer ring and the expansion of inner ring, the ball of bearing and the gap of Internal and external cycle are dwindled, easily cause bearing seizure, and the inefficacy of oiling agent, further shorten the life-span of bearing, therefore, be necessary existing self-balanced multiple-stage centrifugal pump structure study further and improve.
Model utility content
The technical problem that the utility model solves is to provide a kind of self-balanced multiple-stage centrifugal pump with balanced cooling structure, to overcome the shortcoming in above-mentioned background technology.
The technical problem that the utility model solves realizes by the following technical solutions:
A kind of self-balanced multiple-stage centrifugal pump with balanced cooling structure, comprise active chamber, be located at the axle that runs through described active chamber in described active chamber, be located at the axle sleeve on described axle, be located at respectively the mechanical seal cover of described axle front-end and back-end, and be located at respectively fore bearing body and the rear bearing body of described axle front-end and back-end, described mechanical seal cover is positioned at the both sides of described axle, described mechanical seal cover is provided with mechanical seal rinsing hole and mechanical seal Quench cooling chamber, described fore bearing body and rear bearing body upper end are equipped with connection rib on bearing support, described fore bearing body and rear bearing body lower end are equipped with connection rib under bearing support, described fore bearing body and rear bearing body lay respectively at the end of described axle, under described bearing support, connection rib is positioned at described mechanical seal Quench cooling chamber below, described mechanical seal Quench cooling chamber is provided with Quench water inlet and Quench osculum, on described bearing support, connection rib is provided with connection rib cooling chamber on bearing support.
Further, described active chamber is made up of suction casing, stage casing, stator, Spit Section, return guide vane, anti-suction casing, and the middle part of described axle is provided with impeller and anti-impeller.
Beneficial effect: the self-balanced multiple-stage centrifugal pump of the balanced cooling structure of the related band of the utility model, by cancelling bearing support cooling chamber, avoided the water vapor in shrinkage and the bearing chamber of bearing outer ring to be condensate in oiling agent, otherwise the situation of killing causing bearing to occur because gap is too small and damaging because of losing efficacy in advance of oiling agent occur; Cancel sealing cooling chamber simultaneously, reduced the heat loss of fed sheet of a media, be conducive to user energy-saving and cost-reducing.Specific as follows:
1. the utility model is by cancelling bearing support cooling chamber, avoided water vapor in shrinkage and the bearing chamber of bearing outer ring to be condensate in oiling agent and (referred to the 333rd page of Sinopec publishing house " refining equipment engineer handbook "), otherwise the situation of killing causing bearing to occur because gap is too small and damaging because of losing efficacy in advance of oiling agent occurs.
2. the utility model seals cooling chamber by cancellation, has reduced the heat loss of fed sheet of a media, is conducive to user energy-saving and cost-reducing.
3. on the bearing support in the utility model, connection rib is provided with cooling chamber, and meanwhile, mechanical seal cover is provided with mechanical seal rinsing hole and mechanical seal Quench cooling chamber.When pump operation, the flushing cooling liquid that introduce in mechanical seal rinsing hole on mechanical seal cover can reduce the heat to bearing conduction from axle and axle sleeve, simultaneously, in Quench cooling chamber, inject cooling water, can further reduce the heat to bearing conduction from axle and axle sleeve, and, the cooling water flowing out in Quench osculum, drop on the lower connection rib of bearing support, lower connection rib is carried out cooling, reduced the conduction of heat from from lower connection rib to bearing.Like this, the upper and lower connection rib of three approach-bearing support from fed sheet of a media to bearing, axle and axle sleeve that heat conducts from all obtain the cooling of equilibrium simultaneously, and particularly the cooling effect of axle and axle sleeve is strengthened, and has avoided the excessive thermal expansion of bearing inner race.
Brief description of the drawings
In order to be illustrated more clearly in the utility model embodiment's technological scheme, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the internal structure schematic diagram of the utility model preferred embodiment.
Reference character: 1-suction casing, 2-stage casing, 3-stator, 4-impeller, 5-Spit Section, 6-return guide vane, the anti-impeller of 7-, the anti-suction casing of 8-, 9-mechanical seal rinsing hole, connection rib cooling chamber on 10-bearing support, 11-bearing support, connection rib under 12-bearing support, 13-mechanical seal Quench cooling chamber, 14-axle sleeve, 15-axle, connection rib on 16-bearing support.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach object and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
A kind of self-balanced multiple-stage centrifugal pump with balanced cooling structure shown in Figure 1, comprise active chamber, be located at the axle 15 that runs through active chamber in active chamber, be located at the axle sleeve 14 on axle 15, be located at respectively the mechanical seal cover of axle 15 front-end and back-end, and be located at respectively fore bearing body and the rear bearing body of axle 15 front-end and back-end, mechanical seal cover is positioned at the both sides of axle 15, mechanical seal cover is provided with mechanical seal rinsing hole and mechanical seal Quench cooling chamber 13, fore bearing body and rear bearing body upper end are equipped with connection rib 16 on bearing support, fore bearing body and rear bearing body lower end are equipped with connection rib 12 under bearing support, fore bearing body and rear bearing body lay respectively at the end of axle 15, under bearing support, connection rib 12 is positioned at mechanical seal Quench cooling chamber 13 belows, mechanical seal Quench cooling chamber 13 is provided with Quench water inlet and Quench osculum, on bearing support, connection rib 16 is provided with connection rib cooling chamber 10 on bearing support.
In the present embodiment, active chamber is made up of suction casing 1, stage casing 2, stator 3, Spit Section 5, return guide vane 6, anti-suction casing 8, and the middle part of axle 15 is provided with impeller 4 and anti-impeller 7, and active chamber is the stationary part of centrifugal pump.
On bearing support in the utility model, connection rib 16 is provided with cooling chamber 10, and it can stop heat to conduct to bearing support 11 by upper connection rib 16 from fed sheet of a media, simultaneously, mechanical seal cover is provided with mechanical seal rinsing hole 9 and mechanical seal Quench cooling chamber 13, when pump operation, the flushing cooling liquid that introduce in mechanical seal rinsing hole 9 on mechanical seal cover can reduce the heat conducting to bearing support 11 from axle 15 and axle sleeve 14, simultaneously, to the interior injection cooling water of Quench cooling chamber 13, can further reduce the heat conducting to bearing support 11 from axle 15 and axle sleeve 14, and, the cooling water flowing out in Quench osculum, drop on the lower connection rib 12 of bearing support 11, carry out cooling to lower connection rib 12, reduce the heat conduction from lower connection rib 12 to bearing support 11.Like this, the upper and lower connection rib of three approach-bearing support, axle 15 and axle sleeve 14 that heat conducts to bearing support 11 from fed sheet of a media, all obtain the cooling of equilibrium, particularly the cooling effect of axle 15 and axle sleeve 14 is strengthened, and has avoided the excessive thermal expansion of bearing inner race simultaneously.
With existing self-balanced multiple-stage centrifugal pump comparison, of the present utility model simple and reasonable for structure, can reduce user's energy consumption, can extend again the operating life of bearing.
More than show and described basic principle of the present utility model, major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and specification, describes just illustrates principle of the present utility model; do not departing under the prerequisite of the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (2)
1. the self-balanced multiple-stage centrifugal pump with balanced cooling structure, comprise active chamber, be located at the axle that runs through described active chamber in described active chamber, be located at the axle sleeve on described axle, be located at respectively the mechanical seal cover of described axle front-end and back-end, and be located at respectively fore bearing body and the rear bearing body of described axle front-end and back-end, it is characterized in that, described mechanical seal cover is positioned at the both sides of described axle, described mechanical seal cover is provided with mechanical seal rinsing hole and mechanical seal Quench cooling chamber, described fore bearing body and rear bearing body upper end are equipped with connection rib on bearing support, described fore bearing body and rear bearing body lower end are equipped with connection rib under bearing support, described fore bearing body and rear bearing body lay respectively at the end of described axle, under described bearing support, connection rib is positioned at described mechanical seal Quench cooling chamber below, described mechanical seal Quench cooling chamber is provided with Quench water inlet and Quench osculum, on described bearing support, connection rib is provided with connection rib cooling chamber on bearing support.
2. the self-balanced multiple-stage centrifugal pump of the balanced cooling structure of band according to claim 1, is characterized in that, described active chamber is made up of suction casing, stage casing, stator, Spit Section, return guide vane, anti-suction casing, and the middle part of described axle is provided with impeller and anti-impeller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420197818.2U CN203847394U (en) | 2014-04-22 | 2014-04-22 | Self-balancing multistage centrifugal pump with balanced cooling structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420197818.2U CN203847394U (en) | 2014-04-22 | 2014-04-22 | Self-balancing multistage centrifugal pump with balanced cooling structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203847394U true CN203847394U (en) | 2014-09-24 |
Family
ID=51560419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420197818.2U Expired - Lifetime CN203847394U (en) | 2014-04-22 | 2014-04-22 | Self-balancing multistage centrifugal pump with balanced cooling structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203847394U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110578693A (en) * | 2019-10-31 | 2019-12-17 | 沈阳启源工业泵制造有限公司 | Small-flow ultrahigh-pressure boiler feed pump |
| CN111648997A (en) * | 2020-06-09 | 2020-09-11 | 长沙佳能通用泵业有限公司 | High-pressure end sealing mechanism of ore pulp multistage centrifugal pump |
-
2014
- 2014-04-22 CN CN201420197818.2U patent/CN203847394U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110578693A (en) * | 2019-10-31 | 2019-12-17 | 沈阳启源工业泵制造有限公司 | Small-flow ultrahigh-pressure boiler feed pump |
| CN111648997A (en) * | 2020-06-09 | 2020-09-11 | 长沙佳能通用泵业有限公司 | High-pressure end sealing mechanism of ore pulp multistage centrifugal pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140924 |