CN2752491Y - Vertical multi-stage centrifugal pump - Google Patents
Vertical multi-stage centrifugal pump Download PDFInfo
- Publication number
- CN2752491Y CN2752491Y CN 200420095367 CN200420095367U CN2752491Y CN 2752491 Y CN2752491 Y CN 2752491Y CN 200420095367 CN200420095367 CN 200420095367 CN 200420095367 U CN200420095367 U CN 200420095367U CN 2752491 Y CN2752491 Y CN 2752491Y
- Authority
- CN
- China
- Prior art keywords
- double seal
- seal rings
- model
- utility
- rotor
- Prior art date
- 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
- 230000008878 coupling Effects 0.000 claims abstract description 5
- 238000010168 coupling process Methods 0.000 claims abstract description 5
- 238000005859 coupling reaction Methods 0.000 claims abstract description 5
- 230000008676 import Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 abstract description 7
- 230000000694 effects Effects 0.000 description 5
- 230000000153 supplemental effect Effects 0.000 description 4
- 238000007789 sealing Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
- Control Of Non-Positive-Displacement Pumps (AREA)
Abstract
The utility model relates to a vertical multistage centrifugal pump, which comprises a motor, a shaft coupling, a motor frame, a mechanical seal, a shaft, an outer cylinder, a guide bearing and inlet and outlet sections. The utility model is characterized in that the utility model also comprises an impeller with the structure of double seal rings and a balance hole, and a guide blade with the structure of double seal rings; the impeller with the structure of double seal rings and a balance hole and the guide blade with the structure of double seal rings are arranged on one same shaft and are positioned in the outer cylinder. The utility model has reasonable structure, can better balance the axial force of a rotor and simultaneously reduces the volume loss of liquid steam which passes through gaps of the seal rings and the balance hole, and thus, the efficiency of the pump is increased. Because of the auxiliary support of the double seal rings under the function of the dynamic pressure of liquid, the wet criticality rotary speed of the rotor is increased and the running smoothness of the rotor is increased.
Description
Technical field
The utility model relates to a kind of centrifugal pump, particularly a kind of vertical multi-stage centrifugal pump.
Background technique
Common MODEL VERTICAL MULTISTAGE PUMP, under the acting in conjunction of gravity and liquid water thrust, the rotor of being made up of the rotating part of axle, impeller, mechanical seal, coupling etc. is subjected to a downward axial force.Equilibrator commonly used has Balance disc, balancing drum and single seal ring.Balance disc and balancing drum balancing axial thrust also need balance tube to cooperate, and device is complicated, and reliability is low, and the maintenance rate height will improve the stationarity of rotor simultaneously, will increase the diameter of axle, and the result has reduced the area of passage of impeller eye, has reduced the cavitation performance of pump.Shortcomings such as though single seal ring balancing axial thrust is simple in structure, and it is big to exist leakage rate, and volumetric efficiency is low, and counterbalance effect is bad.
The model utility content
It is a kind of rational in infrastructure that the purpose of this utility model is to provide, and the axial force of balancing rotor has reduced the volumetric loss by sealing ring gap and equalizing orifice simultaneously well, thereby improved the vertical multi-stage centrifugal pump of pump efficiency.
The purpose of this utility model can reach by following measure: a kind of vertical multi-stage centrifugal pump, comprise motor, coupling, motor frame, mechanical seal, axle, urceolus, guide bearing, import and export section, it is characterized in that: also comprise the impeller with double seal ring and equalizing orifice structure, stator with double seal ring structure, impeller with double seal ring and equalizing orifice structure is coaxially installed on the axle with the stator with double seal ring structure, and is positioned at urceolus.
The utility model has following advantage compared to existing technology:
1, rational in infrastructure, the axial force of balancing rotor has reduced the volumetric loss by sealing ring gap and equalizing orifice liquid stream simultaneously well, thereby has improved the efficient of pump.
2, owing to the supplemental support of double seal ring under the Hydrodynamic effect, improved the wet criticality rotating speed of rotor, strengthened the stationarity of rotor operation.
Description of drawings
Fig. 1 is a structure sectional view of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing (embodiment):
With reference to Fig. 1, the utility model comprises motor 1, coupling 2, motor frame 3, mechanical seal 4, axle 5, has the impeller 6 of double-sealing and equalizing orifice structure, the stator 7 with double seal ring structure, urceolus 8, guide bearing 9, imports and exports section 10 etc.Impeller 6 with double seal ring and equalizing orifice structure is coaxially installed on the axle 5 with the stator 7 with double seal ring structure, and is positioned at urceolus 8, forms axial thrust balancing devices and increases rotor operation stationarity device.
After adopting said structure, export the highly pressurised liquid of outflow behind the micro-gap of two seals ring of flowing through from impeller 6, pressure progressively reduces, flow back to impeller eye from equalizing orifice at last, on this situation, the back shroud of impeller back does not reduce when the pressure ratio in zone has seal ring within the little seal ring greatly, near inlet pressure, thereby reduced downward axial force; If suitably transfer two seals ring diameter and size, just can realize the equilibrant of different sizes, thus balancing axial thrust well.And wherein liquid current control so reduced volumetric loss, has improved pump efficiency to minimum because the micro-gap of two seals ring will be flowed through.Double seal ring has played the effect of supplemental support to whole rotor part under the dynamic pressure effect of liquid, the gap is few more, and this effect is just obvious more; If pump has n level impeller, just have n supplemental support at least vertically.The supplemental support interaction energy improves the wet criticality rotating speed of rotor, strengthens the stationarity of rotor operation.If the prerequisite guaranteeing the wet criticality rotating speed suitably reduces the diameter of axle, can under the constant situation of pump efficiency, improve the cavitation performance of pump.
Claims (1)
1, a kind of vertical multi-stage centrifugal pump, comprise motor (1), coupling (2), motor frame (3), mechanical seal (4), axle (5), urceolus (8), guide bearing (9), import and export sections (10), it is characterized in that: also comprise the impeller (6) with double seal ring and equalizing orifice structure, stator (7) with double seal ring structure, impeller (6) with double seal ring and equalizing orifice structure is coaxially installed on the axle (5) with the stator (7) with double seal ring structure, and is positioned at urceolus (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420095367 CN2752491Y (en) | 2004-11-19 | 2004-11-19 | Vertical multi-stage centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420095367 CN2752491Y (en) | 2004-11-19 | 2004-11-19 | Vertical multi-stage centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2752491Y true CN2752491Y (en) | 2006-01-18 |
Family
ID=35913900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420095367 Expired - Lifetime CN2752491Y (en) | 2004-11-19 | 2004-11-19 | Vertical multi-stage centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2752491Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103321950A (en) * | 2013-07-02 | 2013-09-25 | 台州豪贝泵业有限公司 | Self-adaptive opening ring adjusting device for pump |
| CN107524603A (en) * | 2017-10-20 | 2017-12-29 | 项达章 | A kind of vertical two-stage centrifugal pump |
| CN108194372A (en) * | 2018-02-10 | 2018-06-22 | 山东心传矿山机电设备有限公司 | Amphibious vertical sand pump |
| WO2024016570A1 (en) * | 2022-07-18 | 2024-01-25 | 利欧集团浙江泵业有限公司 | Multistage centrifugal pump |
-
2004
- 2004-11-19 CN CN 200420095367 patent/CN2752491Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103321950A (en) * | 2013-07-02 | 2013-09-25 | 台州豪贝泵业有限公司 | Self-adaptive opening ring adjusting device for pump |
| CN103321950B (en) * | 2013-07-02 | 2015-09-16 | 台州豪贝泵业有限公司 | A kind of pump adaptivity regulates choma device |
| CN107524603A (en) * | 2017-10-20 | 2017-12-29 | 项达章 | A kind of vertical two-stage centrifugal pump |
| CN108194372A (en) * | 2018-02-10 | 2018-06-22 | 山东心传矿山机电设备有限公司 | Amphibious vertical sand pump |
| CN108194372B (en) * | 2018-02-10 | 2024-03-22 | 山东心传矿山机电设备有限公司 | Amphibious vertical sand pump |
| WO2024016570A1 (en) * | 2022-07-18 | 2024-01-25 | 利欧集团浙江泵业有限公司 | Multistage centrifugal pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: GUANGZHOU BAIYUN PUMP GROUP CO., LTD. Free format text: FORMER NAME OR ADDRESS: BAIYUN PUMP MANUFACTURE CO., LTD., GUANGZHOU |
|
| CP03 | Change of name, title or address |
Address after: 510555, Nine West Buddha Road, Baiyun District, Guangdong, Guangzhou 563 Patentee after: Guangzou Baiyun Pump Group Ltd. Address before: 510555, Nine West Buddha Road, Baiyun District, Guangdong, Guangzhou 563 Patentee before: Baiyun Pump Manufacture Co., Ltd., Guangzhou |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20141119 Granted publication date: 20060118 |