CN108050079A - Submersible axial flow pump - Google Patents

Submersible axial flow pump Download PDF

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Publication number
CN108050079A
CN108050079A CN201711273594.3A CN201711273594A CN108050079A CN 108050079 A CN108050079 A CN 108050079A CN 201711273594 A CN201711273594 A CN 201711273594A CN 108050079 A CN108050079 A CN 108050079A
Authority
CN
China
Prior art keywords
water
flow pump
bearing
axial flow
impeller
Prior art date
Application number
CN201711273594.3A
Other languages
Chinese (zh)
Inventor
谢仕君
谢韵弢
Original Assignee
中广核工程有限公司
中国广核集团有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 中广核工程有限公司, 中国广核集团有限公司 filed Critical 中广核工程有限公司
Priority to CN201711273594.3A priority Critical patent/CN108050079A/en
Publication of CN108050079A publication Critical patent/CN108050079A/en

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00Pumping installations or systems
    • F04D13/02Units comprising pumps and their driving means
    • F04D13/06Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/08Units comprising pumps and their driving means the pump being electrically driven for submerged use
    • F04D13/086Units comprising pumps and their driving means the pump being electrically driven for submerged use the pump and drive motor are both submerged
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/04Shafts or bearings, or assemblies thereof
    • F04D29/046Bearings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/18Rotors
    • F04D29/181Axial flow rotors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/18Rotors
    • F04D29/20Mounting rotors on shafts
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/40Casings; Connections of working fluid
    • F04D29/52Casings; Connections of working fluid for axial pumps
    • F04D29/54Fluid-guiding means, e.g. diffusers
    • F04D29/548Specially adapted for liquid pumps

Abstract

The invention discloses a kind of submersible axial flow pump, including:Motor shaft, one end are supported in water suction end bearing, and the other end is supported in water outlet end bearing;Diffuser is sleeved on the outside of motor shaft;Impeller, on the excircle of motor shaft, wherein one end is located at the forepart of diffuser, and the other end is located at the rear portion of water suction end bearing;Rotor positioned at the outside of impeller, becomes one with impeller;And motor stator, it is fixedly connected mounted on the outside of rotor, and with diffuser.Compared with the prior art, submerged axial-flow pump component of the present invention is few, small, light-weight, stationary seal, can be more than 15 meters of normal uses in the depth of water, usage range is wide.

Description

Submersible axial flow pump
Technical field
The invention belongs to submersible pump technical field, it is more particularly related to a kind of submersible axial flow pump.
Background technology
Submersible axial flow pump is that the active force that a kind of blade by rotary blade generates liquid makes liquid defeated in the axial direction It send and the pump for the work that pulls the plug, is mainly made of dry type motor, hydraulic part and twice or three mechanical seals.
But this submersible axial flow pump size is big, weight is big, part is more, mobile and inconvenient to use, and due to there is twice Or three mechanical seal, after dynamic sealing fails, influence water pump normal operation;In addition, the depth of water is often influencing axial-flow pump just Conventional diving operates, and during normal operation, the depth of water is no more than 15 meters.
In view of this, a kind of part is few, small, light-weight, stationary seal it is necessory to providing, and is more than 15 in the depth of water The submersible axial flow pump of energy normal use in the case of rice.
The content of the invention
It is an object of the invention to:Overcome the deficiencies of the prior art and provide a kind of part it is few, it is small, light-weight, be convenient for Mobile, stationary seal, and be more than the submersible axial flow pump of 15 meters of energy normal uses in the depth of water.
In order to realize foregoing invention purpose, the present invention provides a kind of submersible axial flow pump, including:
Motor shaft, one end are supported in water suction end bearing, and the other end is supported in water outlet end bearing;
Diffuser is sleeved on the outside of motor shaft;
Impeller, on the excircle of the motor shaft, wherein one end is located at the forepart of the diffuser,
The other end is located at the rear portion of the water suction end bearing;
Rotor positioned at the outside of impeller, becomes one with impeller;And
Motor stator is fixedly connected mounted on the outside of rotor, and with the diffuser.
As a kind of improvement of submersible axial flow pump of the present invention, the diffuser end set has mounting hole, the water outlet Bearing is mounted in the mounting hole.
As a kind of improvement of submersible axial flow pump of the present invention, the impeller is mounted on by key connection on the motor shaft.
As a kind of improvement of submersible axial flow pump of the present invention, the impeller is connected with rotor by wedge key is integrated into one Body.
As a kind of improvement of submersible axial flow pump of the present invention, the sky flowed freely for medium is provided on the rotor Chamber.
As a kind of improvement of submersible axial flow pump of the present invention, reinforcing rib, the cavity position are provided on the rotor In on the reinforcing rib.
As a kind of improvement of submersible axial flow pump of the present invention, the impeller is connected with water-inlet horn pipe, the water-inlet horn Pipe axial centre position is provided with the cylinder of radial rib connection, and circular hole, the water suction end bearing are provided in cylinder In circular hole.
As a kind of improvement of submersible axial flow pump of the present invention, deflection cone is installed on the water-inlet horn pipe, deflection cone leads to It crosses and is bolted on the cylinder of water-inlet horn pipe, the water-inlet horn pipe is fixedly attached to the motor stator by flange On.
As a kind of improvement of submersible axial flow pump of the present invention, the diffuser is fixedly connected by flange with motor stator.
As a kind of improvement of submersible axial flow pump of the present invention, the water suction end bearing lubricates radial-axial for integrated water Thrust bearing, the water outlet end bearing are water lubrication journal bearing.
Compared with the prior art, submersible axial flow pump of the present invention, without mechanical seal parts, is reduced by integrating Number of devices, and size is small, light-weight, is limited especially suitable for installation space or the depth of water is more than 15 meters of occasion.
Description of the drawings
With reference to the accompanying drawings and detailed description, submersible axial flow pump of the present invention is described in detail, wherein:
Fig. 1 is the structure diagram of submersible axial flow pump of the present invention.
Reference numeral:
10- motor shafts;12- water suction end bearings;14- water outlet end bearings;16- diffusers;160- mounting holes;18- impellers; 20- rotors;200- reinforcing ribs;2000- cavitys;22- motor stators;24- water-inlet horn pipes;240- cylinders;300- footpaths To muscle;26- deflection cones.
Specific embodiment
It is below in conjunction with attached drawing and specifically real in order to become apparent from the purpose of the present invention, technical solution and its technique effect Mode is applied, the present invention will be described in further detail.It should be appreciated that the specific embodiment described in this specification is only Merely to explaining the present invention, it is not intended to limit the present invention.
Refering to Figure 1, submersible axial flow pump of the present invention includes:
Motor shaft 10, one end are supported in water suction end bearing 12, and the other end is supported in water outlet end bearing 14;
Diffuser 16 is sleeved on the outside of motor shaft 10;
Impeller 18, on the excircle of motor shaft 10, wherein one end is located at the forepart of diffuser 16,
The other end is located at the rear portion of water suction end bearing 12;
Rotor 20 positioned at the outside of impeller 18, becomes one with impeller 18;And
Motor stator 22 is fixedly connected mounted on the outside of rotor 20, and with diffuser 16.
Motor shaft 10 is located at the centre of entire axial-flow pump, and one end insertion absorbs water in end bearing 12, other end insertion water outlet In bearing 14, operationally, motor shaft 10 can rotate under the supporting role of bearings at both ends.
The end bearing 12 that absorbs water lubricates radial-axial thrust bearing for integrated water, and water outlet end bearing 14 is water lubrication radial direction Bearing, integrated water lubrication radial-axial thrust bearing can bear radially and bear bidirectional propulsion, and absorb water end bearing 12 It is separately fixed at water outlet end bearing 14 on the end at 10 both ends of motor shaft.
Diffuser 16 is sleeved on the excircle of motor shaft 10, and one end of motor shaft 10 is all coated, water outlet axis Holding 14 can be mounted in the structure outside 16 water outlet of diffuser, also can be in circle there are one the settings of the end position of diffuser 16 Mounting hole 160, water outlet end bearing 14 are mounted in mounting hole 160, and when motor operates, motor shaft 10 can be in diffuser 16 certainly By rotating, mounting hole 160 is located at the middle position of 16 end of diffuser, by the way that water outlet end bearing 14 is fixed on diffuser 16 End, it is possible to reduce the quantity of parts shortens the length of motor shaft 10, can finally reduce the length of entire axial-flow pump, subtract The weight of light axial-flow pump.
Impeller 18 is mounted on the excircle of motor shaft 10, and one end is located at the forepart (water inlet end) of diffuser 16, the other end Positioned at the rear portion (water outlet) of water suction end bearing 12.In order to reduce amount of parts, impeller 18 passes through key connection with motor shaft 10 Become one structure.
Rotor 20 is fixedly installed on the excircle of impeller 18, is connected and become one with impeller 18 by wedge key, For rotor 20 simultaneously in motor stator 22, motor stator 22 passes through the fasteners such as flange joint bolt or stud and nut It is fixedly connected with diffuser 16, it is intermarginal in 22 outer rim of motor stator and rotor 20 to have gap.
By key connection, 20 3 motor shaft 10, impeller 18 and rotor part sets is finally made to become one structure, led to Cross the setting of integrated morphology, and reduce amount of parts, can corresponding alleviator weight and volume, reduce assembling difficulty.
In order to further improve the strength and stiffness of rotor 20, reinforcing rib is symmetrically arranged on rotor 20 200, reinforcing rib 200 is radially arranged between rotor 20 and motor shaft 10, and the middle part of reinforcing rib 200 is provided with cavity 2000, operationally, medium being capable of the freely flowing in cavity 2000.
The end of impeller 18 is connected with water-inlet horn pipe 24, and 24 axial position of water-inlet horn pipe is provided with radial rib The cylinders 240 of 300 connections are provided with circular hole in cylinder 240, and water suction end bearing 14 is mounted in the circular hole of cylinder 240, Water-inlet horn pipe 24 is fixedly connected by flange joint bolt or stud and nut with motor stator 22.In order to reduce water inlet energy Loss, the end of water-inlet horn pipe 24 is equipped with deflection cone 26, center line and 10 axis of motor shaft of deflection cone 26 by bolt Line overlaps, and by setting deflection cone 26, can reduce the energy loss of water inlet flowing.
The assembling process of submersible axial flow pump of the present invention is:
1) component will be formed together with motor shaft 10, impeller 18 and 18 fixing assembling of rotor respectively;
2) water end (W.E.) bearing 14 is assembled in the mounting hole 160 of 16 end of diffuser;
3) the assembling suction side bearing 12 in water-inlet horn pipe 24;
4) diffuser 16 is fixedly connected with motor stator 22 by flange;
5) motor shaft 10 for being integrated with impeller 18 and rotor 20 is inserted into water outlet end bearing 14, by diffuser 16, gone out Water end (W.E.) bearing 14, impeller 18 and rotor 20 are assembled together;
6) motor shaft 10 is inserted into water suction end bearing 12, and water-inlet horn pipe 24 is consolidated by flange and motor stator 22 It is fixed;
7) deflection cone 26 is fixed on water-inlet horn pipe 24 by bolt, completes assembling, obtain required submerged axial-flow Pump.
Compared with the prior art, submersible axial flow pump of the present invention, without mechanical seal parts, is reduced by integrating Number of devices, and size is small, light-weight, is limited especially suitable for installation space or the depth of water is more than 15 meters of occasion.
According to above-mentioned principle, the present invention can also carry out the above embodiment appropriate change and modification.Therefore, this hair It is bright to be not limited to specific embodiment disclosed and described above, some modifications and changes of the present invention should also be as to fall into this In the scope of the claims of invention.In addition, although some specific terms, these terms are used in this specification Merely for convenience of description, do not limit the present invention in any way.

Claims (10)

1. a kind of submersible axial flow pump, which is characterized in that including:
Motor shaft, one end are supported in water suction end bearing, and the other end is supported in water outlet end bearing;
Diffuser is sleeved on the outside of motor shaft;
Impeller, on the excircle of the motor shaft, wherein one end is located at the forepart of the diffuser,
The other end is located at the rear portion of the water suction end bearing;
Rotor positioned at the outside of impeller, becomes one with impeller;And
Motor stator is fixedly connected mounted on the outside of rotor, and with the diffuser.
2. submersible axial flow pump according to claim 1, which is characterized in that the diffuser end set has mounting hole, institute Water outlet end bearing is stated in the mounting hole.
3. submersible axial flow pump according to claim 1, which is characterized in that the impeller is mounted on the electricity by key connection On arbor.
4. submersible axial flow pump according to claim 3, which is characterized in that the impeller is connected with rotor by wedge key Become one.
5. submersible axial flow pump according to claim 4, which is characterized in that be provided on the rotor free for medium The cavity of flowing.
6. submersible axial flow pump according to claim 5, which is characterized in that reinforcing rib, institute are provided on the rotor Cavity is stated to be located on the reinforcing rib.
7. submersible axial flow pump according to claim 4, which is characterized in that the impeller is connected with water-inlet horn pipe, described Water-inlet horn pipe axial centre position is provided with the cylinder of radial rib connection, and circular hole, the suction are provided in cylinder Water end (W.E.) bearing is mounted in circular hole.
8. submersible axial flow pump according to claim 7, which is characterized in that deflection cone is installed on the water-inlet horn pipe, Deflection cone is bolted on the cylinder of water-inlet horn pipe, and the water-inlet horn pipe is fixedly attached to described by flange On motor stator.
9. submersible axial flow pump according to claim 1, which is characterized in that the diffuser is consolidated by flange and motor stator Fixed connection.
10. submersible axial flow pump according to claim 1, which is characterized in that the water suction end bearing lubricates for integrated water Radial-axial thrust bearing, the water outlet end bearing are water lubrication journal bearing.
CN201711273594.3A 2017-12-06 2017-12-06 Submersible axial flow pump CN108050079A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711273594.3A CN108050079A (en) 2017-12-06 2017-12-06 Submersible axial flow pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711273594.3A CN108050079A (en) 2017-12-06 2017-12-06 Submersible axial flow pump

Publications (1)

Publication Number Publication Date
CN108050079A true CN108050079A (en) 2018-05-18

Family

ID=62121947

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201711273594.3A CN108050079A (en) 2017-12-06 2017-12-06 Submersible axial flow pump

Country Status (1)

Country Link
CN (1) CN108050079A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202414147U (en) * 2011-11-21 2012-09-05 中国船舶重工集团公司第七一二研究所 Integrated thruster
CN103452866A (en) * 2013-09-17 2013-12-18 合肥恒大江海泵业股份有限公司 Submersible axial-flow pump with inbuilt impeller
CN104389796A (en) * 2014-11-15 2015-03-04 合肥恒大江海泵业股份有限公司 Two-stage impeller embedded submersible axial-flow pump
CN206221295U (en) * 2016-11-21 2017-06-06 扬州大学 A kind of full-tubular two-way pump

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202414147U (en) * 2011-11-21 2012-09-05 中国船舶重工集团公司第七一二研究所 Integrated thruster
CN103452866A (en) * 2013-09-17 2013-12-18 合肥恒大江海泵业股份有限公司 Submersible axial-flow pump with inbuilt impeller
CN104389796A (en) * 2014-11-15 2015-03-04 合肥恒大江海泵业股份有限公司 Two-stage impeller embedded submersible axial-flow pump
CN206221295U (en) * 2016-11-21 2017-06-06 扬州大学 A kind of full-tubular two-way pump

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Application publication date: 20180518