CN107542672A - A kind of high rotating speed centrifugal pump of low discharge - Google Patents
A kind of high rotating speed centrifugal pump of low discharge Download PDFInfo
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- CN107542672A CN107542672A CN201610486032.6A CN201610486032A CN107542672A CN 107542672 A CN107542672 A CN 107542672A CN 201610486032 A CN201610486032 A CN 201610486032A CN 107542672 A CN107542672 A CN 107542672A
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- pump housing
- impeller
- motor
- pump
- centrifugal pump
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Abstract
The invention discloses a kind of high rotating speed centrifugal pump of low discharge, including the pump housing, and it is arranged on the outlet on the pump housing, pump housing side connects motor, the pump housing is provided with impeller at motor, impeller connects motor shaft by flat key, locking nut is provided with impeller, locking nut is fastened in motor shaft one end, motor shaft is arranged at motor center, motor is provided with sealing ring with the pump housing in the radial direction of junction and end, pump body includes volute casing runner and taper diffuser pipe, volute casing runner is connected with taper diffuser pipe, taper diffuser pipe connects impeller outlet, the side center line and pump housing external volute center line of impeller outlet mechanically connect adjust pad, adjust pad is symmetricly set on motor shaft both sides；The present invention improves the efficiency of pump installation and reduces unstability；Meet the requirement that auxiliary products type is exchanged；Reduce the blocking impact of vane inlet, improve the stability of centrifugal pump, while to also improving the cavitation characteristics of centrifugal pump.
Description
Technical field
The present invention relates to a kind of centrifugal pump, more particularly to a kind of high rotating speed centrifugal pump of low discharge, belong to aviation flight equipment
Field.
Background technology
Low discharge, high rotating speed centrifugal pump can be used for conveying propellant in various aerospace crafts, or cooling down, following
It is used for transferring working medium in ring, servo-drive system, can the quality of its performance directly affects aircraft keep normal work or task
Can satisfactorily it complete.With the continuous development of Chinese Space technology, the field such as steel, light industry, mine, pharmacy, Aeronautics and Astronautics
Demand, will necessarily it drive developing rapidly for low discharge high-speed centrifugal pump.
At present, the specific revolution of small flow centrifugal pump is relatively low, and low specific speed centrifugal pump runner is long and narrow, causes impeller friction
Consumption and runner internal loss are larger, therefore, less efficient.Simultaneously because impeller channel diffusion is more serious, under low flow rate condition,
Easily in impeller inlet and outlet and internal generation backflow and the separation of flow, cause loss to increase, lift flow is will appear as in external characteristics
There is hump in curve, produce wild effect.Moreover, low specific speed high-speed centrifugal pump proposes higher want to cavitation characteristic
Ask.These problems are especially prominent in low flow rate, small size centrifugal pump.So find effectively design method to reduce more than
Problem.I.e.：The efficiency of pump installation is improved, unstability is reduced, improves cavitation resistive property, is the high rotating speed centrifugal pump research of low discharge
The major issue faced.
The content of the invention
The technical problem to be solved in the present invention is the defects of overcoming the turbid performance of small flow centrifugal pump gas low, there is provided a kind of rill
High rotating speed centrifugal pump is measured, so as to solve the above problems.
In order to solve the above-mentioned technical problem, the invention provides following technical scheme：
A kind of high rotating speed centrifugal pump of low discharge of the present invention, including the pump housing, and the outlet being arranged on the pump housing, pump housing side
Motor is connected, the pump housing is provided with impeller at motor, and impeller connects motor shaft by flat key, locking screw is provided with impeller
Mother, locking nut are fastened in motor shaft one end, and motor shaft is arranged at motor center, motor and the pump housing junction radial direction and
End is provided with sealing ring, and pump body includes volute casing runner and taper diffuser pipe, volute casing runner and taper diffuser pipe phase
Even, taper diffuser pipe connection impeller outlet, the side center line and pump housing external volute center line of impeller outlet mechanically connect adjustment
Pad, adjust pad are symmetricly set on motor shaft both sides.
As a preferred technical solution of the present invention, sealing ring is the radially sealing ring with end face dual face seals.
As a preferred technical solution of the present invention, locking nut rotation direction is opposite with motor rotational axis direction.
As a preferred technical solution of the present invention, the inlet and outlet of the pump housing are " in-line ".
As a preferred technical solution of the present invention, impeller is made up of several blades different in size.
The beneficial effect that is reached of the present invention is：A kind of high rotating speed centrifugal pump of low discharge of the present invention, can be extended to multistage
The high rotating speed centrifugal pump of low discharge, improve the efficiency of pump installation and reduce unstability；Pump housing inlet and outlet use " in-line ", with one
As centrifugal pump right angle profile it is different, be to meet requirement that auxiliary products type is exchanged；Impeller using backward leaning vane it is half-open and
Blade structure different in size, reduce the blocking impact of vane inlet, improve the stability of centrifugal pump, while to also carrying
The high cavitation characteristics of centrifugal pump.
Brief description of the drawings
Accompanying drawing is used for providing a further understanding of the present invention, and a part for constitution instruction, the reality with the present invention
Apply example to be used to explain the present invention together, be not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is a kind of high rotating speed centrifugal pump integral planar structure chart of low discharge of the present invention；
Fig. 2 is a kind of high rotating speed centrifugal pump body flow passage structure figure of low discharge of the present invention；
Fig. 3 is a kind of high rotating speed centrifugal pump impeller structure chart of low discharge of the present invention；
In figure：1. motor；2. impeller；3. the pump housing；301st, volute casing runner；302nd, taper diffuser pipe；4. import；5. locking screw
It is female；6. flat key；7. impeller outlet；8. sealing ring；9. adjust pad；10. motor shaft.
Embodiment
The preferred embodiments of the present invention are illustrated below in conjunction with accompanying drawing, it will be appreciated that described herein preferred real
Apply example to be merely to illustrate and explain the present invention, be not intended to limit the present invention.
Embodiment
As Figure 1-3, the high rotating speed centrifugal pump of a kind of low discharge, including the pump housing 3, and the outlet being arranged on the pump housing 3
4, the side of the pump housing 3 connection motor 1, the pump housing 3 is provided with impeller 2 at motor 1, and impeller 2 connects motor shaft 10 by flat key 6,
Locking nut 5 is provided with impeller 2, locking nut 5 is fastened in the one end of motor shaft 10, and motor shaft 10 is arranged at the center of motor 1,
Motor 1 is provided with sealing ring 8 with the pump housing 3 in the radial direction of junction and end, and the inside of the pump housing 3 includes the He of volute casing runner 301
Taper diffuser pipe 302, volute casing runner 301 are connected with taper diffuser pipe 302, and taper diffuser pipe 302 connects impeller outlet 7, impeller
The side center line and the external volute center line of the pump housing 3 of outlet 7 mechanically connect adjust pad 9, and adjust pad 9 is symmetricly set on motor
The both sides of axle 10.
Further, sealing ring 8 is the radially sealing ring 8 with end face dual face seals, the rotation direction of locking nut 5 and motor
On the contrary, the inlet and outlet of the pump housing 3 are " in-line ", impeller 2 is made up of the rotation direction of axle 10 several blades different in size.
Specifically, power part of the present invention as aerospace craft system inner looping, driving cools down working medium along inner looping
Pipeline flows, by the various heat-exchanger rigs on inner looping, pickup and transmission thermic load, so as to ensure cabin atmosphere humiture control
System and the requirement of the Temperature and Humidity Control of instrument and equipment.Centrifugal pump is mainly made up of the pump housing 3, impeller 2 and motor 1, and motor 1, which is powered, to be transported
Turn, and impeller 2 rotates, the wheel disc of impeller 2 is equipped with 8 uniform length radial blades, when blade rotates, in blade path
Liquid acted on by centrifugal force, radially outward throw away, the core of impeller 2 formed vacuum.Liquid is sucked at the import 4 of the pump housing
Body supplements, and impeller 2 continuously rotates, gets rid of liquid, the continuous imbibition of core, forms continuous liquid supply rate.When liquid enters impeller 2,
Absolute velocity is relatively low, but due to being influenceed by the impeller velocity of following at impeller outlet 7, absolute speed is very high.Liquid from
The energy that impeller obtains, a part is kinetic energy, and a part is static pressure energy.Outlet device passage uses oral fluid body stagnation, then
A part of kinetic energy is changed into pressure energy, and certain pressure is then formed in pump discharge, and driving cools down working medium along inner looping pipeline stream
It is dynamic.
A kind of high rotating speed centrifugal pump of low discharge of the present invention, can be extended to the high rotating speed centrifugal pump of multi-level small-flow, improve pump
The efficiency and reduction unstability of device；The inlet and outlet of the pump housing 3 use " in-line ", different from general centrifugal pump right angle profile, are
In order to meet the requirement of auxiliary products type exchange；Impeller 2 is reduced using the structure that backward leaning vane is half-open and blade is different in size
The blocking impact of vane inlet, the stability of centrifugal pump is improved, while to also improving the cavitation characteristics of centrifugal pump.
Finally it should be noted that：The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention,
Although the present invention is described in detail with reference to the foregoing embodiments, for those skilled in the art, it still may be used
To be modified to the technical scheme described in foregoing embodiments, or equivalent substitution is carried out to which part technical characteristic.
Within the spirit and principles of the invention, any modification, equivalent substitution and improvements made etc., it should be included in the present invention's
Within protection domain.
Claims (5)
1. a kind of high rotating speed centrifugal pump of low discharge, including the pump housing (3), and the outlet (4) being arranged on the pump housing (3), institute
State the pump housing (3) side connection motor (1), it is characterised in that the pump housing (3) is provided with impeller close to the motor (1) place
(2), the impeller (2) connects motor shaft (10) by flat key (6), and locking nut (5) is provided with the impeller (2), described
Locking nut (5) is fastened in the motor shaft (10) one end, and the motor shaft (10) is arranged at the motor (1) center, institute
State motor (1) and be provided with sealing ring (8) in the radial direction of junction and end with the pump housing (3), the pump housing (3) is internal
Including volute casing runner (301) and taper diffuser pipe (302), the volute casing runner (301) and taper diffuser pipe (302) phase
Even, taper diffuser pipe (302) the connection impeller outlet (7), the side center line and the pump housing (3) of the impeller outlet (7) are outside
Portion's spiral case center line mechanically connects adjust pad (9), and the adjust pad (9) is symmetricly set on the motor shaft (10) two
Side.
2. the high rotating speed centrifugal pump of a kind of low discharge according to claim 1, it is characterised in that the sealing ring (8) is footpath
To the sealing ring (8) with end face dual face seals.
3. the high rotating speed centrifugal pump of a kind of low discharge according to claim 1, it is characterised in that the locking nut (5) turns
Dynamic direction is opposite with the motor shaft (10) rotation direction.
A kind of 4. high rotating speed centrifugal pump of low discharge according to claim 1, it is characterised in that the disengaging of the pump housing (3)
Mouth is " in-line ".
5. the high rotating speed centrifugal pump of a kind of low discharge according to claim 1, it is characterised in that the impeller (2) has some
Individual blade composition different in size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610486032.6A CN107542672A (en) | 2016-06-28 | 2016-06-28 | A kind of high rotating speed centrifugal pump of low discharge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610486032.6A CN107542672A (en) | 2016-06-28 | 2016-06-28 | A kind of high rotating speed centrifugal pump of low discharge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107542672A true CN107542672A (en) | 2018-01-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610486032.6A Pending CN107542672A (en) | 2016-06-28 | 2016-06-28 | A kind of high rotating speed centrifugal pump of low discharge |
Country Status (1)
| Country | Link |
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| CN (1) | CN107542672A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112398281A (en) * | 2020-10-30 | 2021-02-23 | 中国航发西安动力控制科技有限公司 | Miniature long-life motor and electric centrifugal pump |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2043284U (en) * | 1987-07-14 | 1989-08-23 | 山东省枣庄市薛城区邹坞机械厂 | Domestic central water-heating miniature circulating pump |
| JPH09209984A (en) * | 1996-02-02 | 1997-08-12 | Japan Servo Co Ltd | Impeller for circulation pump |
| CN203500127U (en) * | 2013-09-03 | 2014-03-26 | 上海人民企业集团水泵有限公司 | Detachable single-stage single-suction-pipe pump |
| CN103835957A (en) * | 2014-03-31 | 2014-06-04 | 上海交通大学 | Direct-drive type switch-reluctance submersible pump |
| CN103953549A (en) * | 2014-04-04 | 2014-07-30 | 上海第一水泵厂有限公司 | Centrifugal coal water slurry pump |
| CN205277906U (en) * | 2016-01-02 | 2016-06-01 | 浙江甬鑫新能源科技有限公司 | Take centrifugal impeller's domestic booster pump |
-
2016
- 2016-06-28 CN CN201610486032.6A patent/CN107542672A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2043284U (en) * | 1987-07-14 | 1989-08-23 | 山东省枣庄市薛城区邹坞机械厂 | Domestic central water-heating miniature circulating pump |
| JPH09209984A (en) * | 1996-02-02 | 1997-08-12 | Japan Servo Co Ltd | Impeller for circulation pump |
| CN203500127U (en) * | 2013-09-03 | 2014-03-26 | 上海人民企业集团水泵有限公司 | Detachable single-stage single-suction-pipe pump |
| CN103835957A (en) * | 2014-03-31 | 2014-06-04 | 上海交通大学 | Direct-drive type switch-reluctance submersible pump |
| CN103953549A (en) * | 2014-04-04 | 2014-07-30 | 上海第一水泵厂有限公司 | Centrifugal coal water slurry pump |
| CN205277906U (en) * | 2016-01-02 | 2016-06-01 | 浙江甬鑫新能源科技有限公司 | Take centrifugal impeller's domestic booster pump |
Non-Patent Citations (3)
| Title |
|---|
| 孙祉佑: "《制冷空调设备使用维修手册》", 31 January 1998, 机械工业出版社 * |
| 沈阳水泵研究所: "《泵节能产品 引进产品 新产品样本》", 28 February 1994, 机械工业出版社 * |
| 黎伟泉: "《21世纪高职高专系列教材 设备拆装与维护实训》", 31 May 2012, 华南理工大学出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112398281A (en) * | 2020-10-30 | 2021-02-23 | 中国航发西安动力控制科技有限公司 | Miniature long-life motor and electric centrifugal pump |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180105 |
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| RJ01 | Rejection of invention patent application after publication |