CN107299908A - A kind of pump hydrostatic formula water lubrication shaft bearing structure - Google Patents
A kind of pump hydrostatic formula water lubrication shaft bearing structure Download PDFInfo
- Publication number
- CN107299908A CN107299908A CN201611136041.9A CN201611136041A CN107299908A CN 107299908 A CN107299908 A CN 107299908A CN 201611136041 A CN201611136041 A CN 201611136041A CN 107299908 A CN107299908 A CN 107299908A
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- Prior art keywords
- duct
- bearing
- pump
- axle sleeve
- water
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/06—Lubrication
- F04D29/061—Lubrication especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/04—Shafts or bearings, or assemblies thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/046—Bearings
- F04D29/047—Bearings hydrostatic; hydrodynamic
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention belongs to lubrication technical field, it is related to a kind of pump hydrostatic formula water lubrication shaft bearing structure.Particular for pump is filled on nuclear power station, hydrostatic formula water lubriucated bearing is used at the upper middle part for filling pump, pre-lubrication is not started so as to fill pump on making.Include impeller, the pump housing, pump shaft, axle sleeve, bearing shell, bearing key, axle sleeve fixing bolt, duct one, duct two, duct three, duct four, rectangle groove, water storage cavity in structure.Lubrication, and many apertured roads, groove and cavity internally are laterally directly wherein rinsed using the stage head in water pump, can effectively be avoided because flushing pressure height brings the problem of leakage rate is big.
Description
Technical field
The invention belongs to lubrication technical field, more particularly to a kind of pump hydrostatic formula water lubrication shaft bearing structure.
Background technology
With the fast development of modern industry, for the requirement of safety and reliability, the starting to some water pumps is proposed
Higher requirement, wherein being accomplished by some water pumps can start in the case of not prelubricated bearing.Such as nuclear power station it is upper
Fill pump and performed under accidental conditions and fill function (to water-filling in reactor coolant loop offer, to maintain in voltage-stablizer
Normal level)；In the state of accident, high-pressure safety injection function is performed (to be used as high-voltage safety and note people's pump, prevent reactor core in LOCA accident
It is exposed), need 2 pump operations, also just at this moment, the requirement that pre-lubrication is not started proposed to filling pump group on standby.It is required that
Pump group can be quick started in the case of no initial lubrication system, and not influence performance and stable operation.
The content of the invention
In order to solve the above problems, the invention provides a kind of pump hydrostatic formula water lubrication shaft bearing structure.Particular for core
Pump is filled on power station, hydrostatic formula water lubriucated bearing is used at the upper middle part for filling pump, prelubricated bearing is not started so as to fill pump on making.
Realizing the technical scheme that above-mentioned purpose is used is：
A kind of pump hydrostatic formula water lubrication shaft bearing structure, including impeller, the pump housing, pump shaft, axle sleeve, bearing shell, bearing key, axle sleeve
Fixing bolt, duct one, duct two, duct three, duct four, rectangle groove, water storage cavity；
The bearing shell is radially fixed on pump shaft by bearing key, and both sides impeller compresses bearing shell, and bearing shell is axially fixed in
On pump shaft, the axle sleeve is fixed on the pump housing by axle sleeve fixing bolt.
Radially offer 3 ducts on the axle sleeve, respectively duct one, duct two and duct three, open vertically
Provided with 1 duct, as duct four.Duct one and duct three are all through hole, and respectively in the side of axle sleeve.Duct two and duct four
All it is blind hole, and both are interconnected, but duct one and duct three are not connected with duct four.Lower section in duct three, axle
Rectangle groove is provided with the inner peripheral surface of set.
Groove is offered on the downside of the pump housing, water storage cavity is formed after being connected with axle sleeve, duct one and duct three pass through
Water storage cavity is interconnected.
The liquid form of liquid stream in bearing is as follows, and on high-tension side water enters the gap of bearing shell and shaft room, with latter portion
Water is divided to flow into duct three by the approach water storage cavity of duct one, another part water flows, flowed to by duct two, duct four low backward
Press side.The water part flowed out in addition from duct three flows to low-pressure side backward, another part flow forward by by duct two,
Duct four flows to low-pressure side.
The relative dimensions design of wherein water lubriucated bearing is as follows, and the wide footpath of water lubriucated bearing than L/D is 1:1.Bearing interior axle
Gap length span between set and bearing shell is 0.1mm~0.2mm.
The duct one is uniformly distributed in a circumferential direction, and its number is generally 4~8, the span of its diameter
For 4~6mm.The duct two is uniformly distributed in a circumferential direction, and its number is generally 4~8, the span of its diameter
For 2~3mm.The duct three is uniformly distributed in a circumferential direction, and its number is generally 4~8, the span of its diameter
For 6~8mm.The duct four is uniformly distributed in a circumferential direction, and its number is generally 4~8, the span of its diameter
For 2~4mm.The number in wherein described duct one, duct two and duct three should be equal, and the center Ying Tong in three ducts
On one axial cross section.
The on high-tension side axial distance of centre-to-centre spacing and the ratio L of bearing length in the duct one2/ L is 1:4.The duct
The two on high-tension side axial distance of centre-to-centre spacing and the ratio L of bearing length3/ L is 1:2.The centre-to-centre spacing high-pressure side in the duct three
Axial distance and bearing length ratio L4/ L is 3:4.
The position of the water storage cavity is in the middle of bearing, the length of its groove and the ratio L of bearing length1/ L is 2:3.
The span of gash depth is 1.5~2.5mm.
Beneficial effects of the present invention are：
The present invention makes water pump have the ability that pre-lubrication is not started using static pressure type water lubriucated bearing, can make water pump safety
It is reliable to be applied in the environment of not pre-lubrication starting.In structure profit is laterally directly rinsed using the stage head in water pump
It is sliding, and many apertured roads, groove and cavity wherein, it can be prevented effectively from because flushing pressure height brings the problem of leakage rate is big, have
There is leakage memory function.
Brief description of the drawings
Fig. 1 is pump hydrostatic formula water lubriucated bearing structural representation；
Fig. 2 is the local critical size schematic diagram of pump hydrostatic formula water lubriucated bearing；
Fig. 3 is the right view of pump hydrostatic formula water lubriucated bearing；
Fig. 4 is the top view of pump hydrostatic formula water lubriucated bearing；
Fig. 5 is the inner periphery partial schematic diagram of pump hydrostatic formula water lubriucated bearing；
Description of reference numerals:
1st, impeller；2nd, the pump housing；3rd, pump shaft；4th, axle sleeve；5th, bearing shell；6th, bearing key；7th, axle sleeve fixing bolt；8th, duct one；
9th, duct two；10th, duct three；11st, duct four；12nd, rectangle groove；13rd, water storage cavity.
Specific implementation method
The present invention is further described with reference to the accompanying drawings and detailed description.
Fig. 1 shows a kind of embodiment of pump hydrostatic formula water lubrication shaft bearing structure of the present invention, and the structure includes impeller
1, the pump housing 2, pump shaft 3, axle sleeve 4, bearing shell 5, bearing key 6, axle sleeve fixing bolt 7, duct 1, duct 29, duct 3 10, duct
4 11, rectangle groove 12, water storage cavity 13.Bearing shell 5 is radially fixed on pump shaft 3 by bearing key 6, and both sides impeller 1 compresses bearing shell
5, bearing shell 5 is axially fixed on pump shaft 3, the axle sleeve 4 is fixed on the pump housing 2 by axle sleeve fixing bolt 7.Axle sleeve 4 is along footpath
To offering 3 ducts, respectively duct 1, duct 29 and duct 3 10.Other axle sleeve 4 as shown in figures 1 and 3 is vertically
On offer 1 duct, as duct 4 11.Wherein duct 1 and duct 3 10 are all through hole, and respectively in the side of axle sleeve 4.
Duct 29 and duct 4 11 are all blind hole, and both are interconnected, but duct 1 and duct 3 10 and duct 4 11 are not
Connection.In addition rectangle groove 12 is provided with the lower section in duct 3 10, the inner peripheral surface of axle sleeve 4 as shown in Figure 1 and Figure 5.The pump housing 2
Downside offer groove, after being connected with axle sleeve 4 formed water storage cavity 13, duct 1 and duct three (10) pass through water storage cavity phase
It is intercommunicated.
The liquid form of the liquid stream in bearing is as follows as shown by the arrows in Figure 1, and on high-tension side water enters bearing shell 5 and axle sleeve 4
Between gap, duct 3 10 is flowed into by the approach water storage cavity 13 of duct 1 with rear portion water, another part water flows backward,
Low-pressure side is flowed to by duct 29, duct 4 11.In addition the water part flowed out from duct 3 10 flows to low-pressure side backward, separately
A part of flow forward flows to low-pressure side again by duct 29 and duct 4 11.
As shown in Fig. 2 pump is as follows with the selection of hydrostatic formula water lubriucated bearing critical size, the footpath of water lubriucated bearing is wide to compare L/
D is 1:1.Gap length span between bearing internal axle sleeve 4 and bearing shell 5 is 0.1mm~0.2mm.Duct 1 is in circumferencial direction
On be uniformly distributed, its number is generally 4~8, and the span of its diameter is 4~6mm.Duct 29 is in a circumferential direction
It is uniformly distributed, its number is generally 4~8, the span of its diameter is 2~3mm.Duct 3 10 is equal in a circumferential direction
Even distribution, its number is generally 4~8, and the span of its diameter is 6~8mm.Duct 4 11 is uniform in a circumferential direction
Distribution, its number is generally 4~8, and the span of its diameter is 2~4mm.Duct 1, duct 29 and duct 3 10
Number should be equal, and the center in three ducts should be on same axial cross section.The on high-tension side axle of centre-to-centre spacing in duct 1
To distance and the ratio L of bearing length2/ L is 1:4.The on high-tension side axial distance of centre-to-centre spacing and the ratio of bearing length in duct 29
Value L3/ L is 1:2.The on high-tension side axial distance of centre-to-centre spacing and the ratio L of bearing length in duct 3 104/ L is 3:4.Water storage cavity 13
Position in the middle of bearing, the length of its groove and the ratio L of bearing length1/ L is 2:3.The span of gash depth
For 1.5~2.5mm.
More than, be patent of the present invention with reference to illustrating that embodiment is made, but the present invention is not limited to above-mentioned implementation
Example, also comprising the other embodiments or variation in the range of present inventive concept.
Claims (6)
1. a kind of pump hydrostatic formula water lubrication shaft bearing structure, it is characterised in that：Including impeller (1), the pump housing (2), pump shaft (3), axle
Cover (4), bearing shell (5), bearing key (6), axle sleeve fixing bolt (7), duct one (8), duct two (9), duct three (10), duct four
(11), rectangle groove (12), water storage cavity (13)；
The bearing shell (5) is radially fixed on pump shaft (3) by bearing key (6), and both sides impeller (1) compresses bearing shell (5), by bearing shell
(5) it is axially fixed on pump shaft (3), the axle sleeve (4) is fixed on the pump housing (2) by axle sleeve fixing bolt (7)；
3 ducts, respectively duct one (8), duct two (9) and duct three (10), edge are radially offered on the axle sleeve (4)
1 duct, as duct four (11) are offered on axial direction.Wherein duct one (8) and duct three (10) they are all through hole, and respectively in axle
Cover the side of (4).Duct two (9) and duct four (11) are all blind hole, and both are interconnected, but duct one (8) and duct
Three (10) are not connected with duct four (11).Rectangle groove is provided with lower section in duct three (10), the inner peripheral surface of axle sleeve (4)
(12)；
Groove is offered on the downside of the pump housing (2), water storage cavity (13), duct one (8) and hole are formed after being connected with axle sleeve (4)
Road three (10) is interconnected by water storage cavity.
2. a kind of pump hydrostatic formula water lubrication shaft bearing structure according to claim 1, it is characterised in that：Liquid stream in bearing
Liquid form is as follows, and on high-tension side water enters the gap between bearing shell (5) and axle sleeve (4), and duct one (8) is passed through with rear portion water
Approach water storage cavity (13) flows into duct three (10), and another part water flows backward, is flowed to by duct two (9), duct four (11)
Low-pressure side.The water part flowed out in addition from duct three (10) flows to low-pressure side backward, and another part flow forward is by passing through
Duct two (9), duct four (11) flow to low-pressure side.
3. a kind of pump hydrostatic formula water lubrication shaft bearing structure according to claim 1, it is characterised in that：The footpath of water lubriucated bearing
Wide is 1 than L/D:1.Gap length span between bearing internal axle sleeve (4) and bearing shell (5) is 0.1mm~0.2mm.
4. a kind of pump hydrostatic formula water lubrication shaft bearing structure according to claim 1, it is characterised in that：The duct one (8)
It is uniformly distributed in a circumferential direction, its number is generally 4~8, the span of its diameter is 4~6mm；
The duct two (9) is uniformly distributed in a circumferential direction, and its number is generally 4~8, and the span of its diameter is
2~3mm；
The duct three (10) is uniformly distributed in a circumferential direction, and its number is generally 4~8, the span of its diameter
For 6~8mm；
The duct four (11) is uniformly distributed in a circumferential direction, and its number is generally 4~8, the span of its diameter
For 2~4mm；
The number of the duct one (8), duct two (9) and duct three (10) should be equal, and the center in three ducts should be
On same axial cross section.
5. a kind of pump hydrostatic formula water lubrication shaft bearing structure according to claim 1, it is characterised in that：The duct one (8)
The on high-tension side axial distance of centre-to-centre spacing and bearing length ratio L2/ L is 1:4；The centre-to-centre spacing high-pressure side of the duct two (9)
Axial distance and bearing length ratio L3/ L is 1:2；The on high-tension side axial distance of centre-to-centre spacing of the duct three (10) with
The ratio L of bearing length4/ L is 3:4.
6. a kind of pump hydrostatic formula water lubrication shaft bearing structure according to claim 1, it is characterised in that：The water storage cavity (13)
Position in the middle of bearing, the length of its groove and the ratio L of bearing length1/ L is 2:3.The span of gash depth
For 1.5~2.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611136041.9A CN107299908B (en) | 2016-12-12 | 2016-12-12 | A kind of pump hydrostatic formula water lubrication shaft bearing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611136041.9A CN107299908B (en) | 2016-12-12 | 2016-12-12 | A kind of pump hydrostatic formula water lubrication shaft bearing structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107299908A true CN107299908A (en) | 2017-10-27 |
| CN107299908B CN107299908B (en) | 2019-04-19 |
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ID=60137661
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611136041.9A Active CN107299908B (en) | 2016-12-12 | 2016-12-12 | A kind of pump hydrostatic formula water lubrication shaft bearing structure |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112805482A (en) * | 2018-09-27 | 2021-05-14 | 尼得科Gpm有限公司 | Rolling bearing with sealing assembly and water pump with same |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4762461A (en) * | 1985-12-20 | 1988-08-09 | Ngk Insulators Ltd. | Leakless pump |
| CN201858161U (en) * | 2010-11-05 | 2011-06-08 | 浙江科尔泵业股份有限公司 | Horizontal axial suction sectional multistage high-pressure centrifugal pump |
| CN204200666U (en) * | 2014-10-28 | 2015-03-11 | 林佳一 | Water-lubricated slide bearing means |
| CN204921450U (en) * | 2015-09-21 | 2015-12-30 | 山东双轮股份有限公司 | Reverse osmosis seawater desalts multistage high -pressure pump |
-
2016
- 2016-12-12 CN CN201611136041.9A patent/CN107299908B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4762461A (en) * | 1985-12-20 | 1988-08-09 | Ngk Insulators Ltd. | Leakless pump |
| CN201858161U (en) * | 2010-11-05 | 2011-06-08 | 浙江科尔泵业股份有限公司 | Horizontal axial suction sectional multistage high-pressure centrifugal pump |
| CN204200666U (en) * | 2014-10-28 | 2015-03-11 | 林佳一 | Water-lubricated slide bearing means |
| CN204921450U (en) * | 2015-09-21 | 2015-12-30 | 山东双轮股份有限公司 | Reverse osmosis seawater desalts multistage high -pressure pump |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112805482A (en) * | 2018-09-27 | 2021-05-14 | 尼得科Gpm有限公司 | Rolling bearing with sealing assembly and water pump with same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107299908B (en) | 2019-04-19 |
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