CN106382233A - Structure for heat balance between impeller and shaft of high-temperature pump - Google Patents
Structure for heat balance between impeller and shaft of high-temperature pump Download PDFInfo
- Publication number
- CN106382233A CN106382233A CN201610938133.2A CN201610938133A CN106382233A CN 106382233 A CN106382233 A CN 106382233A CN 201610938133 A CN201610938133 A CN 201610938133A CN 106382233 A CN106382233 A CN 106382233A
- Authority
- CN
- China
- Prior art keywords
- impeller
- passage
- pump
- pump shaft
- nut
- 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.)
- Pending
Links
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
- F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
- F04D7/06—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metals
-
- 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
- F04D29/007—Details, component parts, or accessories 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
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/586—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps
- F04D29/5893—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps heat insulation or conduction
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention belongs to the field of high-temperature pumps, and relates to a structure of heat balance between an impeller and a shaft of a high-temperature pump. The structure comprises the pump shaft, the impeller, an impeller nut, a locking bolt, impeller keys, an inlet channel, an outlet channel, a first channel, a second channel and a third channel. The impeller nut and the locking bolt are connected to the shaft through threads, self-locking of the locking bolt is achieved under driving of flowing of fluid, and therefore loosening of the impeller nut is avoided. Since the channels exist, the fluid is made to flow through the space between the pump shaft and the impeller nut, and heat balance between the impeller and the pump shaft is achieved. Accordingly, heat balance between the impeller and the pump shaft can be effectively achieved, and the stability and safety of the high-temperature pump are improved.
Description
Technical field
The invention belongs to high-temperature pump field, particularly to a kind of for thermally equilibrated structure between high temperature impeller of pump and axle.
Background technology
With the fast development of modern industry, increasing situation can make centrifugal pump convey the fluid of high temperature.For example send out
Power plant conveys the high-speed centrifugal pump of boiler hot-water, the residual heat removal pump of used in nuclear power station etc..In the actual moving process of pump, by
In conveying is high temperature fluid, and impeller and pump shaft can be led to there is certain temperature difference.So due to the presence of thermal unbalance situation
Can make between impeller, impeller nut and pump shaft, to produce the problem of fit on, be susceptible to the accident that impeller nut loosens, serious shadow
Ring the safe operation of pump.
CN201513378U discloses a kind of improved impeller locking mechanism, and in the program, impeller locking is by impeller
Shaft end is machined with forward screw thread and reverse thread from outside to inside successively, then correspondence tightens positive locking nut and reverse locking spiral shell
Mother is realizing.CN202937503U discloses a kind of axial intake impeller nut-locking device, and the program includes impeller and lock
Hole is threaded on jack panel, impeller and locking nut, impeller is installed on axle respectively, locking nut is with axle for screw thread even
Connect, impeller and locking nut pass through holding screw in the threaded fixation in screw thread hole site.Such scheme is simply real in structure
Show locking to impeller nut realization, when not considering high-temperature pump conveying high temperature fluid, due to thermal unbalance problem
Presence and the assembly problem that occurs.
Content of the invention
In order to solve the above problems, the invention provides a kind of be used for thermally equilibrated structure between high temperature impeller of pump and axle.
By arranging some passages in pump shaft and impeller nut, make high temperature fluid flow through passage, can effectively balance pump shaft and impeller
Between the temperature difference, more on this basis the anti-loosening of impeller nut is realized by the self-lock mechanism of clamping screw.
Realize above-mentioned purpose be employed technical scheme comprise that：
One kind is used for thermally equilibrated structure between high temperature impeller of pump and axle, including pump shaft, impeller, impeller nut, clamping screw, leaf
Wheel key, the passage of high-temperature water flowing, wherein,
The outer peripheral face bottom of described pump shaft is sequentially provided with keyway section and thread segment, and described impeller nut is threadedly attached in institute
It is axially fixed on pump shaft on the thread segment stated and by impeller, described impeller passes through the radially fixed keyway section in pump shaft of impeller key
On, it is placed with camber blades at the described excircle of the top area of clamping screw.
Described impeller nut is screwed in pump shaft in the way of left-handed, and described clamping screw is screwed into pump shaft with right-handed spiral
Interior.At the excircle of clamping screw top area, the rotation direction of camber blades is oppositely oriented with being screwed into of clamping screw, so in stream
Under the drive of dynamic fluid, clamping screw produce one lock direction identical power with it, this be achieve clamping screw oneself
Lock it is therefore prevented that impeller nut loosen.
Intake channel that the passage of described high-temperature water flowing includes being sequentially communicated, exit passageway, passage one, passage two, logical
Road three；Wherein, intake channel is connected to the side of described passage one, enables a fluid to flow channel；Described passage one is in lock
Tightly between bolt outer surface and impeller nut inner surface, extend between impeller nut outer surface and the inner surface of pump shaft；Then
It is followed successively by passage two and passage three, described passage two is the crooked duct injected in impeller nut；Described passage three is in leaf
Duct in the middle of wheel nut；Last passage extends between impeller nut and pump shaft, is connected to exit passageway, enables a fluid to flow
Go out passage.Fluid flow direction in the passage of high-temperature water flowing is as shown by arrow E
Described passage two and passage three for equidistant passage, the span of its channel number is 2 ~ 6, the taking of its diameter
Value scope is 8 ~ 12mm.
The optimum number of described passage two and passage three is 4, and optimum diameter is 10mm.
Described intake channel is the set of multiple passages, and it is the value of its channel number in clamping screw top area
Scope is 4 ~ 8, and the span of its diameter is 10 ~ 15mm.
The optimum number of described intake channel 6, optimum diameter is 13mm.
Described exit passageway is also the set of multiple passages, is in impeller nut afterbody portion region, the taking of its channel number
Value scope is 2 ~ 6, and the span of its diameter is 16 ~ 24mm.
The optimum number of described exit passageway 4, optimum diameter is 20mm.
Beneficial effects of the present invention are：
The structure of the present invention is due to achieving the self-locking of locking nut under the drive of flow of fluid, thus avoiding impeller nut
Loosen.Another is provided with passage it is achieved that heat transfer from fluid to pump shaft is it is ensured that leaf between pump shaft and impeller nut
Thermal balance between wheel and pump shaft.
Brief description
Fig. 1 is the plane graph of thermal balance structure.
Fig. 2 is the excircle blade schematic diagram at clamping screw top.
Description of reference numerals:
1st, pump shaft；2nd, impeller；3rd, impeller nut；4th, clamping screw；5th, impeller key；6th, intake channel；7th, exit passageway；8th, passage
One；9th, passage two；10th, passage three；11st, clamping screw top area；12nd, impeller nut tail region；
13rd, the excircle blade at clamping screw top.
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 for structure thermally equilibrated between high temperature impeller of pump and axle of invention, and this heat is put down
Weighing apparatus structure includes pump shaft 1, impeller 2, impeller nut 3, clamping screw 4, impeller key 5, intake channel 6, exit passageway 7, passage one
8th, passage 29, passage 3 10；This impeller nut 3 is threadedly attached on the thread segment of pump shaft 1 and is axially fixed in impeller
On pump shaft 1, impeller 2 pass through key 5 radially fixed in the keyway section of pump shaft 1.Impeller nut 3 is screwed into pump shaft 1 in the way of left-handed
Interior, clamping screw 4 is screwed in pump shaft 1 with right-handed spiral.It is placed with camber blades at the excircle of the top area of clamping screw 4
13, the rotation direction of camber blades 13 is oppositely oriented with being screwed into of clamping screw 4
The passage of high-temperature water flowing includes the intake channel 6 being sequentially communicated, passage 1, passage 29, passage 3 10, exports and lead to
Road 7.Wherein, intake channel 6 is the duct being located in clamping screw 4, and intake channel 6 is connected to the side of described passage 1, makes
Fluid being capable of flow channel.Described passage 1, between clamping screw 4 outer surface and impeller nut 3 inner surface, extends to leaf
Between wheel nut 3 outer surface and the inner surface of pump shaft 1.Then it is followed successively by passage 29 and passage 3 10, described passage 29 is askew
The oblique duct injected in impeller nut 3.Described passage 3 10 is the duct in the middle of impeller nut 3.Last passage extends to
Between impeller nut 3 and pump shaft 1, it is connected to exit passageway 7, enables a fluid to flow pass.In the passage of high-temperature water flowing
Fluid flow direction is as shown by arrow E
Described intake channel 6 is the set of multiple passages, and it is most preferably individual in clamping screw top area 11 intake channel 6
Number 6, optimum diameter is 13mm.
Described exit passageway 7 is also the set of multiple passages, is in impeller nut afterbody portion region 12 exit passageway 7
Good number 4, optimum diameter is 20mm.
Above-mentioned simply presently preferred embodiments of the present invention, not makees any pro forma restriction to the present invention.Although the present invention
Disclosed above with preferred embodiment, but it is not limited to the present invention.Any those of ordinary skill in the art, are not taking off
In the case of technical solution of the present invention scope, all can be utilized the technology contents of the disclosure above that technical solution of the present invention is made perhaps
How possible variation and modification, or the Equivalent embodiments being revised as equivalent variations.Therefore, every without departing from technical solution of the present invention
Content, according to the technology of the present invention essence to any simple modification made for any of the above embodiments, equivalent variations and modification, all should fall
In the range of technical solution of the present invention protection.
Claims (7)
1. one kind is used for thermally equilibrated structure between high temperature impeller of pump and axle it is characterised in that including pump shaft（1）, impeller（2）、
Impeller nut（3）, clamping screw（4）, impeller key（5）, high-temperature water flowing passage, wherein,
Described pump shaft（1）Outer peripheral face bottom be sequentially provided with keyway section and thread segment, described impeller nut（3）By screw thread even
It is connected on described thread segment and by impeller（2）It is axially fixed in pump shaft（1）On, described impeller（2）By impeller key（5）Radially
It is fixed on pump shaft（1）Keyway section on, described clamping screw（4）The excircle of top area at be placed with camber blades；
Described impeller nut（3）It is screwed into pump shaft in the way of left-handed（1）Interior, described clamping screw（4）It is screwed into right-handed spiral
Pump shaft（1）Interior；The rotation direction of camber blades and clamping screw at the excircle of clamping screw top area（4）Be screwed into rotation direction phase
Instead；
The passage of described high-temperature water flowing includes the intake channel being sequentially communicated（6）, exit passageway（7）, passage one（8）, passage
Two（9）, passage three（10）；Wherein, intake channel（6）It is connected to described passage one（8）Side, enable a fluid to flow into logical
Road；Described passage one（8）In clamping screw（4）Outer surface and impeller nut（3）Between inner surface, extend to impeller nut
（3）Outer surface and pump shaft（1）Inner surface between；Then it is followed successively by passage 29 and passage 3 10, described passage two（9）For askew
Oblique reeve impeller nut（3）In duct；Described passage three（10）It is in impeller nut（3）Middle duct；Last passage
Extend to impeller nut（3）And pump shaft (1) between, it is connected to exit passageway（7）, enable a fluid to flow pass.
2. according to claim 1 a kind of for thermally equilibrated structure between high temperature impeller of pump and axle it is characterised in that institute
The passage two stated（9）With passage three（10）For equidistant passage, the span of its channel number is 2 ~ 6, the taking of its diameter
Value scope is 8 ~ 12mm.
3. according to claim 2 a kind of for thermally equilibrated structure between high temperature impeller of pump and axle it is characterised in that institute
State passage two（9）With passage three（10）Number be 4, a diameter of 10mm.
4. according to claim 1 a kind of for thermally equilibrated structure between high temperature impeller of pump and axle it is characterised in that institute
State intake channel（6）It is the set of multiple passages, it is in clamping screw top area（11）, intake channel（6）Passage
The span of number is 4 ~ 8, and the span of its diameter is 10 ~ 15mm.
5. according to claim 4 a kind of for thermally equilibrated structure between high temperature impeller of pump and axle it is characterised in that institute
State intake channel（6）Number 6, a diameter of 13mm.
6. according to claim 1 a kind of for thermally equilibrated structure between high temperature impeller of pump and axle it is characterised in that institute
State exit passageway（7）It is also the set of multiple passages, be in impeller nut afterbody portion region（12）, exit passageway（7）Its lead to
The span of road number is 2 ~ 6, and the span of its diameter is 16 ~ 24mm.
7. according to claim 6 a kind of for thermally equilibrated structure between high temperature impeller of pump and axle it is characterised in that institute
State exit passageway（7）Number 4, a diameter of 20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610938133.2A CN106382233A (en) | 2016-10-25 | 2016-10-25 | Structure for heat balance between impeller and shaft of high-temperature pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610938133.2A CN106382233A (en) | 2016-10-25 | 2016-10-25 | Structure for heat balance between impeller and shaft of high-temperature pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106382233A true CN106382233A (en) | 2017-02-08 |
Family
ID=57957116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610938133.2A Pending CN106382233A (en) | 2016-10-25 | 2016-10-25 | Structure for heat balance between impeller and shaft of high-temperature pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106382233A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1080934A (en) * | 1964-09-09 | 1967-08-31 | Crane Co | Motor driven impellar pump |
| CN86105549A (en) * | 1985-08-01 | 1987-02-18 | 西屋电气公司 | Impeller/the rotating assembly of nuclear reactor coolant pump |
| US5143515A (en) * | 1990-08-09 | 1992-09-01 | Bw/Ip International, Inc. | Pump with seal purge heater |
| CN2913692Y (en) * | 2006-01-13 | 2007-06-20 | 赵志强 | Centrifugal pump |
| CN202597223U (en) * | 2012-03-27 | 2012-12-12 | 上海阿波罗机械股份有限公司 | Fixing structure of impeller of residual heat removal pump for nuclear power station |
-
2016
- 2016-10-25 CN CN201610938133.2A patent/CN106382233A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1080934A (en) * | 1964-09-09 | 1967-08-31 | Crane Co | Motor driven impellar pump |
| CN86105549A (en) * | 1985-08-01 | 1987-02-18 | 西屋电气公司 | Impeller/the rotating assembly of nuclear reactor coolant pump |
| US5143515A (en) * | 1990-08-09 | 1992-09-01 | Bw/Ip International, Inc. | Pump with seal purge heater |
| CN2913692Y (en) * | 2006-01-13 | 2007-06-20 | 赵志强 | Centrifugal pump |
| CN202597223U (en) * | 2012-03-27 | 2012-12-12 | 上海阿波罗机械股份有限公司 | Fixing structure of impeller of residual heat removal pump for nuclear power station |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170208 |