CN101210565A - Axial force balance structure for submersible axial flow pump - Google Patents
Axial force balance structure for submersible axial flow pump Download PDFInfo
- Publication number
- CN101210565A CN101210565A CNA2006101478938A CN200610147893A CN101210565A CN 101210565 A CN101210565 A CN 101210565A CN A2006101478938 A CNA2006101478938 A CN A2006101478938A CN 200610147893 A CN200610147893 A CN 200610147893A CN 101210565 A CN101210565 A CN 101210565A
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- CN
- China
- Prior art keywords
- impeller
- pump
- diffuser
- guide vane
- vane body
- 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.)
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Abstract
The invention relates to an axial force balanced structure for a submersible axial flow pump, which is composed of a water pump guide vane body, a pump shaft, an impeller and a pump body. The guide vane body is arranged inside the pump body, and presents a taper shape; a layer of clapboard is arranged in the guide vane body, and the pump shaft is arranged on the clapboard; a bearing and a mechanical seal are arranged between the pump shaft and the clapboard; the impeller is arranged at the lower end of the pump shaft and at the lower side of the guide vane body, a water inlet is arranged at the lower side of the impeller, and a water outlet channel is arranged among the upper part of the impeller, the guide vane body and the pump body; a pressure release hole is arranged on the sidewall of the guide vane body, and a sealing ring is arranged at the upper part of the impeller. The invention arranges the sealing ring at the upper part of the impeller, makes use of the antihunt action caused by the sealing ring to lead pressure water in the impeller outlet to pass through the pressure release hole on the guide vane body to release the pressure, reduces the axial force caused by the sectional area of a wheel hub, and enhances the reliability and the whole service life of the submersible pump with rather outstanding effect.
Description
Technical field:
The present invention relates to mechanical field, relate in particular to pump, particularly submersible axial flow pump, concrete is a kind of axial force balance structure that is used for submersible axial flow pump.
Background technique:
In the prior art, axial-flow pump, or claim mixed flow pump, have big flow, be applicable in the characteristics used of low lift, control flood and drain flooded fields, fields such as field irrigation, water conservancy construction are used widely.And the submersible type axial-flow pump, compact structure, convenient for installation and maintenance, the pumping plant investment is little, favored by the user, is the Updated product of traditional axial flow pump unit.The submersible type axial-flow pump is by the water pump diffuser, pump shaft, the impeller and the pump housing constitute, described diffuser is arranged at the inside of the described pump housing, it is coniform that diffuser is, be provided with one deck dividing plate in the diffuser, dividing plate is divided into two inner chambers with diffuser, described pump shaft is arranged on the described dividing plate, be provided with bearing and mechanical seal between described pump shaft and the dividing plate, the top inner chamber of dividing plate is the chamber, grease chamber, described impeller is arranged on the pump shaft lower end, the downside of diffuser, inner chamber between impeller and the dividing plate is the mechanical seal chamber, the bottom of impeller is provided with water intake, upper impeller, be provided with exhalant canal between the diffuser and the pump housing, owing to lack balance of axial force mechanism, the water pressure in the mechanical seal chamber on impeller hub top equals impeller outlet pressure, and the axial force that impeller is subjected to is all born by the bearing in motor bearings or the bearing support, need the self-contained bearing physical dimension to increase, cause the cost height, shaft strength is big, easily heating, the problem of the lost of life.
Summary of the invention:
The object of the present invention is to provide a kind of axial force balance structure that is used for submersible axial flow pump, the described this axial force balance structure that is used for submersible axial flow pump will solve the interior suffered axial force of impeller of prior art submersible axial flow pump and all bear, causes the big technical problem of shaft strength by the bearing in motor bearings or the bearing support.
This axial force balance structure of submersible axial flow pump that is used for of the present invention is by the water pump diffuser, pump shaft, the impeller and the pump housing constitute, described diffuser is arranged on the inside of the described pump housing, it is coniform that diffuser is, be provided with one deck dividing plate in the diffuser, described pump shaft is arranged on the described dividing plate, be provided with bearing and mechanical seal between pump shaft and the dividing plate, described impeller is arranged on the pump shaft lower end, the downside of diffuser, the bottom of impeller is provided with water intake, upper impeller, be provided with exhalant canal between the diffuser and the pump housing, wherein, the sidewall of described diffuser is provided with a relief hole, and the top of described impeller is provided with a seal ring.
Working principle of the present invention is: the seal ring that upper impeller is provided with produces damping function, the press water of impeller outlet, enter the cavity that forms between seal ring top and the water pump diffuser by seal ring, flow out the diffuser outside by the relief hole on the diffuser again, be in the pond, water pressure release in the Seal cage like this, thereby act on the water pressure of Transverse plane very little (near 0) on the impeller hub, be active force very I ignore, promptly the suffered total axial force of impeller only considers that blade profile amasss suffered water pressure.Correspondingly reduced because the axial force that the wheel hub sectional area is produced.
The present invention and prior art contrast, and its effect is actively with tangible.The present invention is provided with seal ring at upper impeller, the damping function of utilizing seal ring to produce, the press water that makes impeller outlet have reduced because the axial force that the wheel hub sectional area is produced by the relief hole pressure release on the diffuser, the reliability and the whole service life of submersible pump have been improved, the effect highly significant.
Description of drawings:
Fig. 1 is the schematic representation that the present invention is used for the axial force balance structure of submersible axial flow pump.
Embodiment:
As shown in Figure 1, a kind of axial force balance structure that is used for submersible axial flow pump of the present invention, by water pump diffuser 8, pump shaft 6, impeller 1, the pump housing 9, water intake 10 and exhalant canal 7 constitute, described diffuser 8 is arranged at the inside of the described pump housing 9, described diffuser 8 is arranged to trapezoidal, the centre of described diffuser 8 is provided with one deck dividing plate diffuser is divided into two chambeies, described pump shaft 6 is arranged on the described dividing plate, be provided with bearing 5 and mechanical seal 3 between described pump shaft 6 and the described dividing plate, chamber, grease chamber 4 is arranged on described dividing plate top, the downside of described pump shaft 6 lower end diffusers 8 is provided with described impeller 1, be arranged to mechanical seal chamber 2 between described impeller 1 and described diffuser 8 intermediate clapboards, the bottom of described impeller 1 is provided with water intake 10, described impeller 1 top, passage between the diffuser 8 and the pump housing 9 is arranged to exhalant canal 7, wherein, on described diffuser 8 sidewalls, draw one in the described mechanical seal chamber 2 and unload the outside that pressure supply water pipe 12 leads to the pump housing 9, with cooperation place, diffuser 8 lower end seal ring 11 is set at described impeller 1.
Claims (1)
1. axial force balance structure that is used for submersible axial flow pump, by the water pump diffuser, pump shaft, the impeller and the pump housing constitute, described diffuser is arranged on the inside of the described pump housing, it is coniform that diffuser is, be provided with one deck dividing plate in the diffuser, described pump shaft is arranged on the described dividing plate, be provided with bearing and mechanical seal between pump shaft and the dividing plate, described impeller is arranged on the pump shaft lower end, the downside of diffuser, the bottom of impeller is provided with water intake, upper impeller, be provided with exhalant canal between the diffuser and the pump housing, it is characterized in that: the sidewall of described diffuser is provided with a relief hole, and the top of described impeller is provided with a seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101478938A CN101210565A (en) | 2006-12-25 | 2006-12-25 | Axial force balance structure for submersible axial flow pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101478938A CN101210565A (en) | 2006-12-25 | 2006-12-25 | Axial force balance structure for submersible axial flow pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101210565A true CN101210565A (en) | 2008-07-02 |
Family
ID=39610786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006101478938A Pending CN101210565A (en) | 2006-12-25 | 2006-12-25 | Axial force balance structure for submersible axial flow pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101210565A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102758778A (en) * | 2012-07-30 | 2012-10-31 | 宁波巨神制泵实业有限公司 | Core-pulling type submersible pump and mounting method thereof |
| CN105593532A (en) * | 2014-03-18 | 2016-05-18 | 格兰富控股联合股份公司 | Turbomachine having a sealing unit, maintenance method, and associated maintenance devices |
| CN108368850A (en) * | 2015-12-21 | 2018-08-03 | 通用电气公司 | Thrust-compensating system for fluid delivery system |
| CN109916732A (en) * | 2019-04-26 | 2019-06-21 | 湖州华特不锈钢管制造有限公司 | A kind of water pressure tester of steel tube |
| CN110869616A (en) * | 2017-05-10 | 2020-03-06 | Itt制造企业有限责任公司 | Multi-stage pump with enhanced thrust balancing features |
-
2006
- 2006-12-25 CN CNA2006101478938A patent/CN101210565A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102758778A (en) * | 2012-07-30 | 2012-10-31 | 宁波巨神制泵实业有限公司 | Core-pulling type submersible pump and mounting method thereof |
| CN102758778B (en) * | 2012-07-30 | 2015-03-25 | 宁波巨神制泵实业有限公司 | Core-pulling type submersible pump and mounting method thereof |
| CN105593532A (en) * | 2014-03-18 | 2016-05-18 | 格兰富控股联合股份公司 | Turbomachine having a sealing unit, maintenance method, and associated maintenance devices |
| KR101819634B1 (en) * | 2014-03-18 | 2018-01-17 | 그런포스 홀딩 에이/에스 | Turbomachine having a sealing unit, maintenance method, and associated maintenance devices |
| US10330109B2 (en) | 2014-03-18 | 2019-06-25 | Grundfos Holding A/S | Turbo machine having a sealing unit, maintenance method, and associated maintenance device |
| CN108368850A (en) * | 2015-12-21 | 2018-08-03 | 通用电气公司 | Thrust-compensating system for fluid delivery system |
| CN110869616A (en) * | 2017-05-10 | 2020-03-06 | Itt制造企业有限责任公司 | Multi-stage pump with enhanced thrust balancing features |
| CN109916732A (en) * | 2019-04-26 | 2019-06-21 | 湖州华特不锈钢管制造有限公司 | A kind of water pressure tester of steel tube |
| CN109916732B (en) * | 2019-04-26 | 2024-03-22 | 湖州华特不锈钢管制造有限公司 | Steel pipe hydrostatic test device |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20080702 |