CN101358601B - Concrete spiral casing seawater circulation pump for nuclear plant - Google Patents
Concrete spiral casing seawater circulation pump for nuclear plant Download PDFInfo
- Publication number
- CN101358601B CN101358601B CN2007100445202A CN200710044520A CN101358601B CN 101358601 B CN101358601 B CN 101358601B CN 2007100445202 A CN2007100445202 A CN 2007100445202A CN 200710044520 A CN200710044520 A CN 200710044520A CN 101358601 B CN101358601 B CN 101358601B
- Authority
- CN
- China
- Prior art keywords
- pump
- mechanical seal
- bearing
- spiral casing
- seal device
- 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.)
- Active
Links
Abstract
A seawater circulating pump with a concrete scroll casing used for a nuclear power plant consists of a pump body, a mechanical seal device and a single-pole single-absorption mixed-flow impeller mechanism; the pump body is arranged in the concrete scroll casing; an upper base ring and a lower base ring are arranged in the concrete scroll casing; a strut is arranged between the upper base ring and the lower base ring; a front cover plate and a back cover plate are respectively arranged on the front and the back of the impeller; the bottom part of the scroll casing is provided with an embedded part; the cutwater of the inner cavity of the scroll casing is connected with the embedded part; the embedded part is connected with the bottom cover of the pump; a mechanical seal is arranged at the location of the top cover of the pump; a shaft sleeve is arranged between the mechanical seal and a pump shaft; the mechanical seal consists of a leaf seal element; a reduction box is connected with a bracket by a second coupler. The concrete scroll casing of the invention is arranged in a seawater circulating pump structure; besides, the mechanical seal and a lubricating structure are arranged on the circulating pump; a tilting pad is adopted as a guide bearing, thus improving the working reliability of the circulating pump and ensuring the normal running of a generator; the structure is simple; the effect is remarkable.
Description
Technical field:
The present invention relates to mechanical field, relate in particular to pump, particularly a kind of concrete spiral casing seawater circulation pump that is used for nuclear power station.
Background technique:
Nuclear power station utilizes recycle pump to extract seawater and imports vapour condenser, and the steam cooling that steam turbine is discharged is condensed into water, and the heat of condensing is entered in the seawater.In the prior art, when recycle pump changes in each side conditions such as condition of water quality, the water yield, water flow velocity, hydraulic pressure, equipment load, chamber sections, do not have good wear resistance, durability, and self strength deficiency.
Summary of the invention:
The purpose of this invention is to provide a kind of concrete spiral casing seawater circulation pump that is used for nuclear power station, the described this concrete spiral casing seawater circulation pump that is used for nuclear power station will solve the technical problem of prior art recycle pump wear resistance, durability, self strength deficiency.
This concrete spiral casing seawater circulation pump that is used for nuclear power station of the present invention is made of a vertical mixed flow pump of one step single sucking, the vertical mixed flow pump of described one step single sucking is by the pump housing, mechanical seal device and one step single sucking mixed-flow impeller constitute, described impeller is arranged on the pump shaft, described pump shaft is arranged in the described pump housing, wherein, the described pump housing is arranged in the concrete spiral casing, be provided with a high nickel cast iron upper base seat ring and high nickel cast iron seat ring of going to the bottom in the described concrete spiral casing, described high nickel cast iron upper base seat ring and high nickel cast iron are gone to the bottom and are provided with pillar between the seat ring, be provided with cutwater in the inner chamber of concrete spiral casing, described cutwater is connected with embedded part, described embedded part is connected with the bottom of the pump housing, described impeller is connected with pump shaft with key by taper hole, be provided with back shroud in the impeller, described back shroud is provided with increasing back sealing ring and equalizing orifice, described mechanical seal device is arranged between pump shaft and the pump housing top cover, is provided with axle sleeve between described mechanical seal device and the pump shaft.
Further, described mechanical seal device is made of the flap seal element.
Further, the top of the top cover of the pump housing is provided with bearing bracket, described bearing bracket is connected with a coupling by a planetary reduction gear box, be provided with thrust-bearing and last guide bearing in the planetary reduction gear box, be provided with down guide bearing between bearing bracket and the described mechanical seal device.
Further, be provided with two aerated capsules in the described mechanical seal device, described aerated capsule cooperates with pump shaft, along the axially-aligned of pump shaft.
Further, be perfused with fresh water in the Seal cage that the top cover of the described mechanical seal device and the pump housing constitutes.
Further, the bottom of described planetary reduction gear box is provided with lubricating oil tank, is perfused with lubricant oil in the described lubricating oil tank, described thrust-bearing of described lubricant oil submergence and last guide bearing.
Further, described thrust-bearing is made of 12～14 round and elastic thrust bearing shoe valves.
Further, described thrust-bearing upside is provided with guide bearing, and described guide bearing can incline by 6～8 and watt constitute.
Further, described speed reducer is provided with and starts auxiliary oil pump, main oil feed pump, oil cooler and filter.
Further, described guide bearing down is arranged on the top of mechanical seal device, and the cantilever ratio of following guide bearing is greater than 1.2.
Concrete, described impeller is made by dual phase steel.Pump shaft is made by the forging stainless steel.
Working principle of the present invention is: the spiral case that is used for the concrete spiral casing seawater circulation pump of nuclear power station is that the reinforced concrete of sea water resistance is built, in the Up/down base ring of being made by high nickel cast iron is arranged and is provided with pillar, its volute casing cut water place cutwater all links to each other with embedded part respectively with pump cover.Impeller is the one step single sucking mixed-flow.Be to reduce the downward end thrust of rotor, increasing back sealing ring, impeller material are arranged is dual phase steel in design on back shroud of impeller.Parts on shaft has all been taked corresponding clearance seal measure, make its not with contact with sea water, axle sleeve has been taked the sea water resistance material, guarantees that its working life is more than 10 years.The metallic material of this pump all and contact with sea water is all with dual phase steel or high nickel cast iron.The stationary ring life-span of mechanical seal device is 2.5 years, and the rotating ring life-span reached more than 10 years, and for guaranteeing the proper functioning of sealing, Seal cage injects filtered cleaning fresh water, and the protection of twice aerated capsule is arranged when termination of pumping, prevents the seawater perfusion.Up-thrust bearing is the round and elastic thrust bearing shoe valve, forms by 12～14, and the thrust of bearing pump rotor is together with the weight of speed reducer rotor; Guide bearing can incline by 6～8 and watt form, and good self-alignment adjustment capability is arranged.
The present invention and prior art contrast, and its effect is actively with tangible.The present invention is arranged on concrete spiral casing in the sea water circulating pump structure, and is provided with mechanical seal and lubricating structure at recycle pump, and employing can be inclined watt as guide bearing, improved the functional reliability of recycle pump, guarantee that generator normally moves, simple in structure, effect is remarkable.
Description of drawings:
Fig. 1 is the structural representation that is used for the concrete spiral casing seawater circulation pump of nuclear power station of the present invention.
Fig. 2 is the mechanical seal structure schematic representation that is used for the concrete spiral casing seawater circulation pump of nuclear power station of the present invention.
Embodiment:
As depicted in figs. 1 and 2, in one embodiment of the present of invention, the concrete spiral casing seawater circulation pump that is used for nuclear power station is made of a vertical mixed flow pump of one step single sucking, the vertical mixed flow pump of described one step single sucking is by the pump housing, mechanical seal device 15 and one step single sucking mixed-flow impeller 6 constitute, described impeller 6 is arranged on the pump shaft 5, described pump shaft 5 is arranged in the described pump housing, wherein, the described pump housing is arranged in the concrete spiral casing 7, be provided with a high nickel cast iron upper base seat ring 26 and high nickel cast iron seat ring 25 of going to the bottom in the described concrete spiral casing 7, described high nickel cast iron upper base seat ring 26 and high nickel cast iron are gone to the bottom and are provided with pillar 27 between the seat ring 25, be provided with cutwater 13 in the inner chamber of concrete spiral casing 7, described cutwater 13 is connected with embedded part 12, described embedded part 12 is connected with the bottom of the pump housing, described impeller 6 is connected with pump shaft 5 with key by taper hole, impeller 6 front and back are respectively arranged with front shroud 8 and back shroud 9, seal ring 10 before being provided with between front shroud 8 and the impeller 6, be provided with increasing back sealing ring 11 between back shroud 9 and the impeller 6, back shroud is provided with equalizing orifice, described mechanical seal device 15 is arranged between pump shaft 5 and the pump housing top cover 14, is provided with axle sleeve 16 between described mechanical seal device 15 and the pump shaft 5.
Further, described mechanical seal device 15 is made of flap seal element 17.
Further, the top of the top cover of the pump housing is provided with bearing bracket 19, described bearing bracket 19 is connected with a coupling 4 by a planetary reduction gear box 3, be provided with thrust-bearing 20 and last guide bearing 21 in the planetary reduction gear box 3, be provided with down guide bearing 22 between bearing bracket 19 and the described mechanical seal device 15.
Further, be provided with two aerated capsules 18 in the described mechanical seal device 15, described aerated capsule 18 cooperates with pump shaft 5, along the axially-aligned of pump shaft 5.
Further, be perfused with fresh water in the Seal cage that described mechanical seal device 15 and pump housing top cover 14 constitute.
Further, the bottom of described planetary reduction gear box 3 is provided with lubricating oil tank 23, is perfused with lubricant oil in the described lubricating oil tank 23, described thrust-bearing 20 of described lubricant oil submergence and last guide bearing 21.
Further, described thrust-bearing 20 is made of 12～14 round and elastic thrust bearing shoe valves.
Further, described thrust-bearing 20 upsides are provided with guide bearing, and described guide bearing can incline by 6～8 and watt constitute.
Further, described speed reducer is provided with and starts auxiliary oil pump, main oil feed pump, oil cooler and filter.
Further, described guide bearing 22 down is arranged on the top of mechanical seal device 15, and following guide bearing 22 is connected with supporting base 24, and the cantilever ratio of following guide bearing 22 is greater than 1.2.
Concrete, described impeller 6 is made by dual phase steel.Pump shaft 5 is made by the forging stainless steel.
Motor 1 is connected with planetary reduction gear box 3 by a coupling 2.
Claims (6)
1. concrete spiral casing seawater circulation pump that is used for nuclear power station, constitute by a vertical mixed flow pump of one step single sucking, the vertical mixed flow pump of described one step single sucking is by the pump housing, mechanical seal device and one step single sucking mixed-flow impeller constitute, described impeller is arranged on the pump shaft, described pump shaft is arranged in the described pump housing, it is characterized in that: the described pump housing is arranged in the concrete spiral casing, be provided with a high nickel cast iron upper base seat ring and high nickel cast iron seat ring of going to the bottom in the described concrete spiral casing, described high nickel cast iron upper base seat ring and high nickel cast iron are gone to the bottom and are provided with pillar between the seat ring, be provided with cutwater in the inner chamber of concrete spiral casing, described cutwater is connected with embedded part, described embedded part is connected with the bottom of the pump housing, described impeller is connected with pump shaft with key by taper hole, be provided with back shroud in the impeller, described back shroud is provided with increasing back sealing ring and equalizing orifice, described mechanical seal device is arranged between pump shaft and the pump housing top cover, is provided with axle sleeve between described mechanical seal device and the pump shaft;
The top of the top cover of the pump housing is provided with bearing bracket, described bearing bracket is connected with a coupling by a planetary reduction gear box, be provided with thrust-bearing and last guide bearing in the planetary reduction gear box, be provided with down guide bearing between bearing bracket and the described mechanical seal device;
Be provided with two aerated capsules in the described mechanical seal device, described aerated capsule cooperates with pump shaft, along the axially-aligned of pump shaft;
The bottom of described planetary reduction gear box is provided with lubricating oil tank, is perfused with lubricant oil in the described lubricating oil tank, described thrust-bearing of described lubricant oil submergence and last guide bearing;
Described impeller is made by dual phase steel.
2. the concrete spiral casing seawater circulation pump that is used for nuclear power station as claimed in claim 1 is characterized in that: described mechanical seal device is made of the flap seal element.
3. the concrete spiral casing seawater circulation pump that is used for nuclear power station as claimed in claim 1 is characterized in that: be perfused with fresh water in the Seal cage that the top cover of the described mechanical seal device and the pump housing constitutes.
4. the concrete spiral casing seawater circulation pump that is used for nuclear power station as claimed in claim 1 is characterized in that: described thrust-bearing is made of 12～14 round and elastic thrust bearing shoe valves.
5. the concrete spiral casing seawater circulation pump that is used for nuclear power station as claimed in claim 4 is characterized in that: described thrust-bearing upside is provided with guide bearing, and described guide bearing can incline by 6～8 and watt constitute.
6. the concrete spiral casing seawater circulation pump that is used for nuclear power station as claimed in claim 1 is characterized in that: described guide bearing down is arranged on the top of mechanical seal device, and the cantilever ratio of following guide bearing is greater than 1.2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100445202A CN101358601B (en) | 2007-08-02 | 2007-08-02 | Concrete spiral casing seawater circulation pump for nuclear plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100445202A CN101358601B (en) | 2007-08-02 | 2007-08-02 | Concrete spiral casing seawater circulation pump for nuclear plant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101358601A CN101358601A (en) | 2009-02-04 |
| CN101358601B true CN101358601B (en) | 2010-12-22 |
Family
ID=40331159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100445202A Active CN101358601B (en) | 2007-08-02 | 2007-08-02 | Concrete spiral casing seawater circulation pump for nuclear plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101358601B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107620715A (en) * | 2017-10-16 | 2018-01-23 | 上海阿波罗机械股份有限公司 | The main cooling water pump of used in nuclear power station |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101943170B (en) * | 2010-09-30 | 2012-02-29 | 上海阿波罗机械股份有限公司 | Sea water circulating pump for nuclear power station |
| CN102117669B (en) * | 2010-10-29 | 2013-04-24 | 中广核工程有限公司 | Method and system for controlling seawater reservoir water level pump trip of nuclear power plant |
| CN102536886A (en) * | 2011-12-19 | 2012-07-04 | 镇江正汉泵业有限公司 | Halogen delivering pump impeller with salt deposition resistance |
| WO2013157989A1 (en) * | 2012-04-17 | 2013-10-24 | Открытое акционерное общество Нижегородская инжиниринговая компания "Атомэнергопроект" | System of leakage drains for a main circulating pump assembly |
| CN104879305A (en) * | 2015-05-28 | 2015-09-02 | 国网湖北省电力公司咸宁供电公司 | Water pump with dynamic seal for power plant |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3738782A (en) * | 1971-09-01 | 1973-06-12 | Worthington Corp | Centrifugal pump with concrete volute |
| US4869643A (en) * | 1982-08-12 | 1989-09-26 | 501 Stork Pompen B.V. | Pump housing, mould parts of a mould wall for a pump housing and method of manufacturing a pump housing |
| CN1293737A (en) * | 1998-03-17 | 2001-05-02 | 西门子公司 | Cooling water pump and method for the production thereof |
| CN201121590Y (en) * | 2007-08-02 | 2008-09-24 | 上海阿波罗机械制造有限公司 | Electric auxiliary water feeding pump for nuclear power plant |
-
2007
- 2007-08-02 CN CN2007100445202A patent/CN101358601B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3738782A (en) * | 1971-09-01 | 1973-06-12 | Worthington Corp | Centrifugal pump with concrete volute |
| US4869643A (en) * | 1982-08-12 | 1989-09-26 | 501 Stork Pompen B.V. | Pump housing, mould parts of a mould wall for a pump housing and method of manufacturing a pump housing |
| CN1293737A (en) * | 1998-03-17 | 2001-05-02 | 西门子公司 | Cooling water pump and method for the production thereof |
| CN201121590Y (en) * | 2007-08-02 | 2008-09-24 | 上海阿波罗机械制造有限公司 | Electric auxiliary water feeding pump for nuclear power plant |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107620715A (en) * | 2017-10-16 | 2018-01-23 | 上海阿波罗机械股份有限公司 | The main cooling water pump of used in nuclear power station |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101358601A (en) | 2009-02-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101358601B (en) | Concrete spiral casing seawater circulation pump for nuclear plant | |
| CN107355389B (en) | Solar thermal power generation high-temperature long-axis molten salt pump | |
| JPS6345517B2 (en) | ||
| CN101956685A (en) | Fully water-lubricated super-pressure plunger water pump | |
| CN201763613U (en) | High-pressure self-balance horizontal multistage centrifugal pump | |
| JP2019508614A (en) | Reactor coolant pump | |
| CN201074596Y (en) | Concrete spiral casing sea water recirculating pump | |
| CN101603541B (en) | Electric diving pump | |
| CN101943170B (en) | Sea water circulating pump for nuclear power station | |
| CN209856040U (en) | Multistage canned motor pump and use its water delivery system | |
| CN201031798Y (en) | Self cooling down wear resistant non-leakage balanced suction pump | |
| CN101956688B (en) | Self water-replenishing flat valve plunger type extra-high pressure water pump | |
| CN204646690U (en) | Centrifugal low-pressure water coal slurry pump | |
| CN112628146A (en) | Multistage double suction pump with vertical structure | |
| CN201786595U (en) | Full water-lubrication superhigh pressure plunger-type water pump | |
| CN207485672U (en) | For the high-pressure pump of seawater desalination system | |
| CN207212680U (en) | Solar energy thermal-power-generating high-temperature long-shaft pump for liquid salts | |
| CN206221299U (en) | A kind of novel deep well submerged pump | |
| CN201461460U (en) | Submersible motor pump | |
| CN201496307U (en) | Bearing device of small-caliber vertical diagonal flow pump | |
| CN204985034U (en) | Dry -type pump bearing retainer | |
| CN202914322U (en) | Multi-stage canned pump with motor arranged on upper portion | |
| CN204961379U (en) | Dry -type pump bearing retainer | |
| CN208885607U (en) | A kind of immersible pump device for preventing leakage | |
| CN102817762A (en) | Oil guide bearing self-lubricating device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |