CN108386366A - A kind of air turbine pump of the pre- press pump of band - Google Patents
A kind of air turbine pump of the pre- press pump of band Download PDFInfo
- Publication number
- CN108386366A CN108386366A CN201810102814.4A CN201810102814A CN108386366A CN 108386366 A CN108386366 A CN 108386366A CN 201810102814 A CN201810102814 A CN 201810102814A CN 108386366 A CN108386366 A CN 108386366A
- Authority
- CN
- China
- Prior art keywords
- pump
- precompressed
- inducer
- retarder
- press
- 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
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/04—Units comprising pumps and their driving means the pump being fluid driven
- F04D13/043—Units comprising pumps and their driving means the pump being fluid driven the pump wheel carrying the fluid driving means
-
- 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
- F04D29/18—Rotors
- F04D29/185—Rotors consisting of a plurality of wheels
Abstract
The present invention relates to a kind of air turbine pump of the pre- press pump of band, solve that existing air turbine pump can not work under low entry pressure and system effectiveness is low, system structure is complicated, it is difficult to the problem used under small size space.Air turbine pump includes pre- press pump, retarder and main pump；Pre- press pump includes procapsid, precompressed impeller and precompressed pump shaft, and precompressed impeller is mounted on precompressed pump shaft and is arranged in procapsid；Main pump includes middle casing, back casing, inducer, centrifugal wheel, turbine and main pump shaft；Inducer and centrifugal wheel are arranged in middle casing, and turbine is arranged in back casing, and middle casing is fixedly connected with procapsid, back casing respectively；Inducer and turbine are separately mounted to the both sides of main pump shaft, and the centre in inducer and turbine is arranged in centrifugal wheel, and main pump shaft is connect across inducer with retarder；Retarder includes high gear and low speed train, the high gear connection of main pump shaft and retarder, the low speed train connection of precompressed pump shaft and retarder.
Description
Technical field
The present invention relates to air turbine pump fields, and in particular to a kind of air turbine pump of the pre- press pump of band.
Background technology
Aerospace flight vehicle needs the high-altitude on separate ground or space work, by aircraft space size and structure matter
The constraint of amount, the structure size and quality of propellant feed system are severely limited.In order to minimize structure size and matter
The rotating speed of amount, propellant pump is higher and higher, and in order to mitigate the quality and scale of tank pressure charging system, the pressure of propellant tank
High rotating speed and low entry pressure feature lower and lower, that propellant pump has, it is desirable that propellant pump has very high anti-cavitation
Performance.
The anti-cavitation performance that the method raising of inducer pumps is added before being typically employed in centrifugal wheel in the prior art, but is improved
Limited extent, and in off-design point operating mode farther out, it is limited to the anti-cavitation performance of inducer itself, propellant pump is anti-
Cavitation performance still not satisfies the requirement worked normally under low entry pressure.In addition, increasing before main fuel pump in the prior art
One slow-speed of revolution vane type oil pump or jet pump improve the inlet pressure of propellant pump as pre- booster pump, and pre- booster pump can be with
Main fuel pump is set to be worked normally under low inlet pressure, but this pre- booster pump needs additional driving mechanism or high pressure
Source, is added significantly to the structure size and weight of system, and reduces system effectiveness so that complex system, in space ruler
It is infeasible in the case of very little anxiety.Therefore, a kind of air vortex compact-sized, efficient, anti-cavitation performance is excellent is designed
Wheel pump is the fundamental way for improving propellant pump anti-cavitation performance.
Invention content
It can not work under low entry pressure present invention aim to address existing air turbine pump and system effectiveness is low,
System structure is complicated, it is difficult to which the problem used under small size space provides a kind of compact-sized, efficient, anti-cavitation performance
The air turbine pump of the good pre- press pump of band makes propellant pump that can be worked normally under higher rotating speed and lower inlet pressure.
Technical proposal that the invention solves the above-mentioned problems is,
A kind of air turbine pump of the pre- press pump of band, including pre- press pump, retarder and main pump, the pre- press pump and main pump difference
Mounted on the both sides of retarder；The pre- press pump includes procapsid, precompressed impeller and precompressed pump shaft, and the precompressed impeller is mounted on
On precompressed pump shaft, and it is arranged in procapsid, precompressed impeller uses diagonal flow type impeller, aial flow impeller or axial-flow type and oblique flow
The combining form impeller of formula；The main pump includes middle casing, back casing, inducer, centrifugal wheel, turbine and main pump shaft；It is described
Inducer and centrifugal wheel are arranged in middle casing, and the turbine is arranged in back casing, the middle casing respectively with it is preceding
Shell, back casing are fixedly connected；The inducer and turbine are separately mounted to the both sides of main pump shaft, and centrifugal wheel is arranged in inducer
With the centre of turbine, main pump shaft passes through inducer and centrifugal wheel to be connect with retarder；Shape between the pre- press pump and middle casing
At transition runner, retarder is mounted in transition runner, and retarder includes high gear and low speed train, the main pump shaft with subtract
The high gear of fast device connects, and the low speed train of the precompressed pump shaft and retarder connects, precompressed pump shaft and main pump shaft coaxial line
Distribution.Turbine drives main pump shaft high speed rotation drives inducer and centrifugal wheel to be pressurized work, while main pump shaft and retarder high speed
Gear synchronous rotates, and low speed train low speed rotation, low speed train and precompressed pump shaft synchronous rotary, band are driven after retarder slows down
Dynamic precompressed impeller is that medium is pressurized in advance, and working media enters precompressed impeller, and the medium with pressure enters back into induction after pre- supercharging
Wheel and centrifugal wheel.
Further, the pre- press pump further includes guide vane, and the guide vane setting is pacified on rear side of precompressed impeller, and by bearing
On precompressed pump shaft, the guide vane is fixedly connected with procapsid, middle casing respectively.
Further, the guide vane of the pre- press pump is single-stage guide vane or multistage guide vane.
Further, the retarder is single reduction gear or multi-stage speed reducer.
Further, the inducer of the main pump and centrifugal wheel are inducer and the integrated impeller of centrifugal wheel, are conducive to
Improve the anti-cavitation performance and efficiency of main pump.
Further, the inducer uses Variable-pitch Inducers, uniform pitch inducer or compound screw pitch inducer.Induction
Wheel uses varying pitch scheme, can also use uniform pitch or compound screw pitch scheme, when turbine pump condition variation range is larger,
Using varying pitch or compound screw pitch scheme, has and utilize the anti-cavitation performance for improving the inclined operating mode of pump
Further, the front end of the precompressed impeller is provided with axis head nut, and the axis head nut is connect with precompressed pump shaft.
Further, the low speed train integrated setting of the precompressed pump shaft and retarder.
Beneficial effects of the present invention are：
1. the air turbine pump anti-cavitation performance of the invention with pre- press pump is good.High rotating speed main pump is slowed down rear-guard by retarder
Pre- press pump is moved, pre- press pump design speed is relatively low, under same cavitation specific speed level, can meet more low entry pressure condition
Job requirement so that air turbine pump can work under the conditions of relatively low inlet pressure, have higher anti-cavitation performance；Precompressed
Impeller uses axial-flow type or diagonal flow type scheme, has the anti-cavitation performance more excellent than centrifugal scheme, even if in low entry pressure
Under the operating mode of 11 slight cavitation of power precompressed impeller, the boosting capability of pre- press pump will not be significantly affected, it is ensured that 3 import of main pump
With enough pressure, cavitation will not occur.
2. the air turbine pump of the invention with pre- press pump is efficient；Precompressed impeller uses axial-flow type or diagonal flow type scheme,
It is more efficient than the booster pumps scheme such as jet pump, centrifugal wheel, and precompressed impeller is directly driven using retarder 2, compares air vortex
Wheel is operated alone, and demand energy consumption is lower.
3. air turbine pump of the present invention is compact-sized, size is small；Pre- press pump and main pump integrated design save conventional pre-
Press pump driving motor or air turbine system structure, air turbine pump weight and size significantly reduce.
Description of the drawings
Fig. 1 is the structure chart of air turbine pump of the embodiment of the present invention.
Reference numeral：The pre- press pumps of 1-, 2- retarders, 3- main pumps, 11- precompressed impellers, 12- guide vanes, 13- precompressed pump shafts, 14-
Procapsid, 15- bearings, 21- high gears, 22- low speed trains, 31- inducers, 32- centrifugal wheels, 33- main pump shafts, 34- turbines,
35- middle casings, 36- back casings, 37- axis head nuts.
Specific implementation mode
Present disclosure is described in further detail below in conjunction with the drawings and specific embodiments：
As shown in Figure 1, the present invention provides the air turbine pump of a kind of high-cavitation-resistance energy, wide operating range, can be used for resisting
Cavitation performance requires harsh fuel service system, especially spacecraft propulsion field, and air turbine pump is mainly by pre- press pump
1, retarder 2 and the composition of main pump 3, pre- press pump 1 and main pump 3 are separately mounted to the both sides of retarder 2.
Pre- press pump 1 includes procapsid 14, precompressed impeller 11, guide vane 12 and precompressed pump shaft 13, and precompressed impeller 11 is mounted on pre-
On press pump axis 13, and it is arranged in procapsid 14, guide vane 12 is arranged in 11 rear side of precompressed impeller, and is mounted in advance by bearing 15
On press pump axis 13, precompressed pump shaft 13 is supported on procapsid 14；Procapsid 14 is fixedly connected with guide vane 12.
Main pump 3 includes middle casing 35, back casing 36, inducer 31, centrifugal wheel 32, turbine 34 and main pump shaft 33；Induction
Wheel 31 and centrifugal wheel 32 be arranged in middle casing 35, turbine 34 be arranged in back casing 36, middle casing 35 respectively with lead
Leaf 12, back casing 36 are fixedly connected, and 33 both ends of main pump shaft are respectively supported on middle casing 35 and back casing 36,31 He of inducer
Turbine 34 is separately mounted to the both sides of main pump shaft 33, and centrifugal wheel 32 is arranged in the centre of inducer 31 and turbine 34, main pump shaft 33
It is connect with retarder 2 across inducer 31 and centrifugal wheel 32.
The pre- press pump 1 of air turbine pump and main pump 3 of the pre- press pump of band of the present invention are directly connected to, and 1 guide vane 12 of pre- press pump is in
Between transition runner is formed between shell 35, retarder 2 is mounted on inside transition runner, and retarder 2 includes high gear 21 and low
Fast train 22, the main pump shaft 33 of main pump are connect with the high gear 21 of retarder 2, precompressed pump shaft 13 and the retarder 2 of pre- press pump
Low speed train 22 connect, precompressed pump shaft 13 and 33 coaxial line of main pump shaft distribution.The low speed train of precompressed pump shaft 13 and retarder 2
22 can be used integrated setting.The front end of precompressed impeller 11 is provided with axis head nut 37, and axis head nut 37 connects with precompressed pump shaft 13
It connects, to 11 axial restraint of precompressed impeller.
33 high speed rotation of turbine drives main pump shaft drives inducer 31 and centrifugal wheel 32 to be pressurized for medium, while main pump shaft
33 with 21 synchronous rotary of retarder high gear, 22 low speed rotation of driving low speed train, low speed train 22 after the deceleration of retarder 2
With 13 synchronous rotary of precompressed pump shaft, precompressed impeller 11 is driven to be pressurized in advance for medium, operating on low voltage medium enters precompressed impeller 11, in advance
The medium with certain pressure enters back into inducer 31 and centrifugal wheel 32 after supercharging, is finally reached the purpose of supercharging.Low speed rotation
There is the pre- press pump 1 of work higher anti-cavitation performance, pre- press pump to improve the pressure of 31 import of main pump inducer, ensure main pump not
Cavitation occurs, the air turbine pump with pre- press pump can work normally under the conditions of extremely low inlet pressure.
The precompressed impeller 11 of pre- press pump 1 uses diagonal flow type scheme, can also use axial-flow type, or using axial-flow type and tiltedly
The combining form of streaming, the inlet pressure of the pre- press pump of selection Main Basiss 1 of 11 scheme of precompressed impeller, design speed, inducer
The parameters such as inlet pressure demand determine.When inlet pressure is relatively low, pre- press pump 1 selects lower design speed；Work as inducer
When 31 inlet pressure demands are higher, precompressed impeller 11 is using the stronger diagonal flow type scheme of boosting capability or axial-flow type and oblique flow
The assembled scheme of formula.
The guide vane of pre- press pump is single-stage, or multistage guide vane.When precompressed pump discharge operating mode variation range is larger,
It can be not provided with guide vane 12, reduce the flow losses after precompressed impeller 11 under inclined operating mode.
Retarder 2 is single reduction gear or multi-stage speed reducer.The present embodiment uses planetary reduction gear, and planetary reduction gear includes
Multiple planetary gears and single sun gear engaged transmission, can obtain larger reduction ratio under smaller structure space, in structure sky
Between require it is harsh in the case of, multi-stage speed reducer can also be used, reduce retarder external envelope size, be conducive to improve main pump and
Mouth flow stability.
The pre- medium after supercharged of pre- press pump 1 enters main pump 3, the design speed root of main pump 3 by the channel of retarder periphery
It is chosen according to the pressure of 31 import of inducer, when 31 inlet pressure of inducer is higher, takes higher design speed；Conversely, take compared with
Low design speed.Inducer 31 uses varying pitch scheme, uniform pitch or compound screw pitch scheme can also be used, when turbine 34
When pump condition variation range is larger, using varying pitch or compound screw pitch scheme, has and utilize the cavitation-resistance for improving the inclined operating mode of pump
Energy.Inducer 31 is that 32 entrance of centrifugal wheel is pressurized, and the present embodiment inducer 31 and centrifugal wheel 32 are split structure, can also be incited somebody to action
Inducer 31 and the design of centrifugal wheel 32 are integrated, and are conducive to the anti-cavitation performance and efficiency that improve main pump 3.
Claims (8)
1. a kind of air turbine pump of the pre- press pump of band, it is characterised in that：Including pre- press pump (1), retarder (2) and main pump (3), institute
It states pre- press pump (1) and main pump (3) is separately mounted to the both sides of retarder (2)；
The pre- press pump (1) includes procapsid (14), precompressed impeller (11) and precompressed pump shaft (13), precompressed impeller (11) peace
On precompressed pump shaft (13), and it is arranged in procapsid (14), precompressed impeller (11) is using diagonal flow type impeller, axial-flow type leaf
The combining form impeller of wheel or axial-flow type and diagonal flow type；
The main pump (3) includes middle casing (35), back casing (36), inducer (31), centrifugal wheel (32), turbine (34) and master
Pump shaft (33)；The inducer (31) and centrifugal wheel (32) are arranged in middle casing (35), and turbine (34) setting exists
In back casing (36), the middle casing (35) is fixedly connected with procapsid (14), back casing (36) respectively；The inducer
(31) and turbine (34) is separately mounted to the both sides of main pump shaft (33), and the centrifugal wheel (32) is arranged in inducer (31) and turbine
(34) between, main pump shaft (33) is connect across inducer (31) with retarder (2)；
Transition runner is formed between the pre- press pump (1) and middle casing (35), retarder (2) is mounted in transition runner, subtracts
Fast device (2) includes high gear (21) and low speed train (22), the high gear (21) of the main pump shaft (33) and retarder (2)
Connection, the precompressed pump shaft (13) connect with the low speed train (22) of retarder (2), and precompressed pump shaft (13) and main pump shaft (33) are same
Axis is distributed.
2. the air turbine pump of the pre- press pump of band according to claim 1, it is characterised in that：The pre- press pump (1) further includes
Guide vane (12), guide vane (12) setting are mounted on precompressed pump shaft (13) on rear side of precompressed impeller (11), and by bearing (15)
On, the guide vane (12) is fixedly connected with procapsid (14), middle casing (35) respectively.
3. the air turbine pump of the pre- press pump of band according to claim 2, it is characterised in that：The guide vane (12) of the pre- press pump
For single-stage guide vane or multistage guide vane.
4. the air turbine pump of the pre- press pump of band according to claim 1 or 2 or 3, it is characterised in that：The retarder (2)
For single reduction gear or multi-stage speed reducer.
5. the air turbine pump of the pre- press pump of band according to claim 4, it is characterised in that：The inducer of the main pump (3)
(31) and centrifugal wheel (32) is inducer and the integrated impeller of centrifugal wheel.
6. the air turbine pump of the pre- press pump of band according to claim 5, it is characterised in that：The inducer (31) is using change
Screw pitch inducer, uniform pitch inducer or compound screw pitch inducer.
7. the air turbine pump of the pre- press pump of band according to claim 6, it is characterised in that：Before the precompressed impeller (11)
End is provided with axis head nut (37), and the axis head nut (37) connect with precompressed pump shaft (13).
8. the air turbine pump of the pre- press pump of band according to claim 7, it is characterised in that：The precompressed pump shaft (13) and subtract
Low speed train (22) integrated setting of fast device (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810102814.4A CN108386366A (en) | 2018-02-01 | 2018-02-01 | A kind of air turbine pump of the pre- press pump of band |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810102814.4A CN108386366A (en) | 2018-02-01 | 2018-02-01 | A kind of air turbine pump of the pre- press pump of band |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108386366A true CN108386366A (en) | 2018-08-10 |
Family
ID=63074965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810102814.4A Pending CN108386366A (en) | 2018-02-01 | 2018-02-01 | A kind of air turbine pump of the pre- press pump of band |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108386366A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109882423A (en) * | 2019-02-26 | 2019-06-14 | 西安航天动力研究所 | A kind of super-low specific speed centrifugal pump device |
| CN109973246A (en) * | 2019-03-22 | 2019-07-05 | 西安航天动力研究所 | A kind of gas-liquid composite drive precompressed turbine pump configuration and precompressed turbine pump driving method |
| CN110131176A (en) * | 2019-04-10 | 2019-08-16 | 浙江理工大学 | Raise mine pump configuration and its control method in deep-sea |
| CN110821712A (en) * | 2019-10-23 | 2020-02-21 | 西安航天动力研究所 | Low temperature turbine pump high temperature gas outlet end connection structure |
| CN111120414A (en) * | 2019-12-13 | 2020-05-08 | 西安航天动力研究所 | Axial force balance structure and method for large-flow high-power precompression pump |
| CN113339282A (en) * | 2021-07-06 | 2021-09-03 | 西安航天动力研究所 | Non-contact precompression pump rotational speed measurement system |
| CN114962206A (en) * | 2022-06-09 | 2022-08-30 | 湖南高创翔宇科技有限公司 | Graded pressurizing fuel pump |
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| CN2086816U (en) * | 1988-09-26 | 1991-10-16 | 徐仁忠 | Combined energy-saving unit combating cavitation erosion |
| CN200999767Y (en) * | 2006-12-29 | 2008-01-02 | 上海东方泵业(集团)有限公司 | Variable intake performance pump |
| CN101446301A (en) * | 2008-12-17 | 2009-06-03 | 中国航天科技集团公司第六研究院第十一研究所 | Miniature high-speed air turbine pump |
| CN105545797A (en) * | 2015-12-29 | 2016-05-04 | 西安航天动力研究所 | Integrated impeller with high cavitation resisting performance |
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2018
- 2018-02-01 CN CN201810102814.4A patent/CN108386366A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2086816U (en) * | 1988-09-26 | 1991-10-16 | 徐仁忠 | Combined energy-saving unit combating cavitation erosion |
| CN200999767Y (en) * | 2006-12-29 | 2008-01-02 | 上海东方泵业(集团)有限公司 | Variable intake performance pump |
| CN101446301A (en) * | 2008-12-17 | 2009-06-03 | 中国航天科技集团公司第六研究院第十一研究所 | Miniature high-speed air turbine pump |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109882423A (en) * | 2019-02-26 | 2019-06-14 | 西安航天动力研究所 | A kind of super-low specific speed centrifugal pump device |
| CN109882423B (en) * | 2019-02-26 | 2020-11-06 | 西安航天动力研究所 | Centrifugal pump device with ultralow specific speed |
| CN109973246A (en) * | 2019-03-22 | 2019-07-05 | 西安航天动力研究所 | A kind of gas-liquid composite drive precompressed turbine pump configuration and precompressed turbine pump driving method |
| CN109973246B (en) * | 2019-03-22 | 2020-06-30 | 西安航天动力研究所 | Gas-liquid composite driving prepressing turbine pump structure and prepressing turbine pump driving method |
| CN110131176A (en) * | 2019-04-10 | 2019-08-16 | 浙江理工大学 | Raise mine pump configuration and its control method in deep-sea |
| CN110821712A (en) * | 2019-10-23 | 2020-02-21 | 西安航天动力研究所 | Low temperature turbine pump high temperature gas outlet end connection structure |
| CN111120414A (en) * | 2019-12-13 | 2020-05-08 | 西安航天动力研究所 | Axial force balance structure and method for large-flow high-power precompression pump |
| CN113339282A (en) * | 2021-07-06 | 2021-09-03 | 西安航天动力研究所 | Non-contact precompression pump rotational speed measurement system |
| CN113339282B (en) * | 2021-07-06 | 2022-07-05 | 西安航天动力研究所 | Non-contact precompression pump rotational speed measurement system |
| CN114962206A (en) * | 2022-06-09 | 2022-08-30 | 湖南高创翔宇科技有限公司 | Graded pressurizing fuel pump |
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Application publication date: 20180810 |