CN107299908B - 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
- CN107299908B CN107299908B CN201611136041.9A CN201611136041A CN107299908B CN 107299908 B CN107299908 B CN 107299908B CN 201611136041 A CN201611136041 A CN 201611136041A CN 107299908 B CN107299908 B CN 107299908B
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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 fields, are 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 does not start so as to make to fill pump.It 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 is laterally directly wherein rinsed using the stage head in water pump, and in internal more apertured roads, groove and cavity, can effectively avoid the problem for bringing leakage rate big due to flushing pressure height.
Description
Technical field
The invention belongs to lubrication technical field, in particular to a kind of pump hydrostatic formula water lubrication shaft bearing structure.
Background technique
As the fast development of modern industry proposes the starting of some water pumps for the requirement of safety and reliability
Higher requirement, wherein just need some water pumps that can start in the case where not prelubricated bearing.For example nuclear power station is upper
It fills pump and is executed 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 executed (to be used as high-voltage safety note people's pump, prevent reactor core in LOCA accident
It is exposed), need 2 pump operations, also just at this moment, propose the requirement that pre-lubrication does not start to pump group is filled on spare.It is required that
Pump group can quick start in the case where no initial lubrication system, and not influence performance and stable operation.
Summary of the invention
To solve the above-mentioned problems, the present invention provides a kind of pump hydrostatic formula water lubrication shaft bearing structures.Particular for core
Pump is filled on power station, uses hydrostatic formula water lubriucated bearing at the upper middle part for filling pump, and so as to make to fill pump, prelubricated bearing is not started.
Realizing technical solution used by above-mentioned purpose 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 two 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.
3 ducts, respectively duct one, duct two and duct three are radially offered on the axle sleeve, are opened vertically
Equipped 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
It is all blind hole, and the two is interconnected, but duct one and duct three are not connected to duct four.In the lower section in duct three, axis
Rectangle groove is provided on the inner peripheral surface of set.
Groove is offered on the downside of the pump housing, forms water storage cavity after connecting 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 one approach water storage cavity of duct, another part water is flowed backward, flowed to by duct two, duct four low
Press side.In addition flow to low-pressure side backward from water a part that duct three is flowed out, another part flow forward by by duct two,
Duct four flows to low-pressure side.
Wherein water lubriucated bearing relative dimensions design it is as follows, the diameter of water lubriucated bearing it is wide than L/D be 1:1.Bearing inner shaft
Gap size value range between set and bearing shell is 0.1mm~0.2mm.
The duct one is uniformly distributed in a circumferential direction, and number is 4~8, the value range of diameter
For 4~6mm.The duct two is uniformly distributed in a circumferential direction, and number is 4~8, the value range of diameter
For 2~3mm.The duct three is uniformly distributed in a circumferential direction, and number is 4~8, the value range of diameter
For 6~8mm.The duct four is uniformly distributed in a circumferential direction, and number is 4~8, the value range of diameter
For 2~4mm.Wherein the number in the duct one, duct two and duct three should be equal, and the center Ying Tong in three ducts
On one axial cross section.
Ratio L of the center in the duct one away from high-tension side axial distance and bearing length2/ L is 1:4.The duct
Ratio L of two center away from high-tension side axial distance and bearing length3/ L is 1:2.The center in the duct three is far from high-pressure side
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 groove and the ratio L of bearing length1/ L is 2:3.
The value range of trench depth is 1.5~2.5mm.
The invention has the benefit that
The present invention makes water pump have the ability that pre-lubrication does not start using static pressure type water lubriucated bearing, and water pump can be made safe
It is reliable to be suitable in the environment of not pre-lubrication starting.Profit is laterally directly rinsed using the stage head in water pump in structure
It is sliding, and more apertured roads, groove and cavity wherein, the problem for bringing leakage rate big due to flushing pressure height can be effectively avoided, is had
There is leakage storage function.
Detailed description of the invention
Fig. 1 is pump hydrostatic formula water lubriucated bearing structural schematic diagram；
Fig. 2 is pump hydrostatic formula water lubriucated bearing part critical size schematic diagram；
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 symbols:
1, impeller；2, the pump housing；3, pump shaft；4, axle sleeve；5, bearing shell；6, bearing key；7, axle sleeve fixing bolt；8, duct one；
9, duct two；10, duct three；11, duct four；12, rectangle groove；13, 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 invention, which 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 two 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 diameter
To offering 3 ducts, respectively duct 1, duct 29 and duct 3 10.In addition axle sleeve as shown in figures 1 and 34 is along axial direction
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 the two is interconnected, but duct 1 and duct 3 10 and duct 4 11 are not
Connection.Furthermore rectangle groove 12 is provided on 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, water storage cavity 13 is formed after connecting with axle sleeve 4, duct 1 and duct three (10) pass through water storage cavity phase
It is intercommunicated.
The liquid form of liquid stream in bearing as shown by the arrows in Figure 1 is as follows, and on high-tension side water enters bearing shell 5 and axle sleeve 4
Between gap, duct 3 10 is flowed by one 8 approach water storage cavity 13 of duct with rear portion water, another part water flows backward,
Low-pressure side is flowed to by duct 29, duct 4 11.Furthermore low-pressure side is flowed to backward from water a part that duct 3 10 is flowed out, separately
A part of flow forward equally passes through duct 29 and duct 4 11 and flows to low-pressure side.
As shown in Fig. 2, the selection of pump hydrostatic formula water lubriucated bearing critical size is as follows, the diameter of water lubriucated bearing is wide to compare L/
D is 1:1.Gap size value range 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, number is 4~8, and the value range of diameter is 4~6mm.Duct 29 is in a circumferential direction
It is uniformly distributed, number is 4~8, and the value range of diameter is 2~3mm.Duct 3 10 is equal in a circumferential direction
Even distribution, number are 4~8, and the value range of diameter is 6~8mm.Duct 4 11 is uniform in a circumferential direction
Distribution, number is 4~8, and the value range of 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 center in duct 1 is away from high-tension side axis
To the ratio L of distance and bearing length2/ L is 1:4.Ratio of the center in duct 29 away from high-tension side axial distance and bearing length
Value L3/ L is 1:2.Ratio L of the center in duct 3 10 away from high-tension side axial distance and bearing length4/ L is 3:4.Water storage cavity 13
Position in the middle of bearing, the length of groove and the ratio L of bearing length1/ L is 2:3.The value range of trench depth
For 1.5~2.5mm.
More than, it is illustrated for the invention patent referring to what embodiment was made, but the present invention is not limited to above-mentioned implementations
Example, also comprising the other embodiments or variation within the scope 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), axis
It covers (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 two 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 in axial direction, wherein duct one (8) and duct three (10) are all through-hole, and respectively in axis
The side of (4) is covered, duct two (9) and duct four (11) are all blind hole, and the two is interconnected, but duct one (8) and duct
Three (10) are not connected to duct four (11), in the lower section in duct three (10), are provided with rectangle groove on the inner peripheral surface of axle sleeve (4)
(12)；
Groove is offered on the downside of the pump housing (2), forms water storage cavity (13) after connecting with axle sleeve (4), duct one (8) and hole
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), passes through duct one (8) 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)
In addition low-pressure side flows to low-pressure side from water a part that duct three (10) is flowed out backward, another part flow forward passes 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 diameter of water lubriucated bearing
Width ratio L/D is 1:1, and the gap size value range 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, number is 4~8, and the value range of diameter is 4~6mm；
The duct two (9) is uniformly distributed in a circumferential direction, and number is 4~8, and the value range of diameter is 2~
3mm；
The duct three (10) is uniformly distributed in a circumferential direction, and number is 4~8, and the value range of diameter is 6~
8mm；
The duct four (11) is uniformly distributed in a circumferential direction, and number is 4~8, and the value range of diameter is 2~
4mm；
The number of the duct one (8), duct two (9) and duct three (10) is equal, and the center in three ducts should be same
On 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)
Ratio L of the center away from high-tension side axial distance and bearing length2/ L is 1:4；The center of the duct two (9) is far from high-pressure side
Axial distance and bearing length ratio L3/ L is 1:2；The center of the duct three (10) away from high-tension side axial distance 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 groove and the ratio L of bearing length1/ L is 2:3, the value range of trench 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 CN107299908A (en) | 2017-10-27 |
| CN107299908B true 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 |
|---|---|
| CN (1) | CN107299908B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102018123908A1 (en) * | 2018-09-27 | 2020-04-02 | Nidec Gpm Gmbh | Rolling bearing with seal arrangement and water pump with the 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 |
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| Publication number | Publication date |
|---|---|
| CN107299908A (en) | 2017-10-27 |
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