CN104215441B - A kind of vertical rotor dynamic radial load maintainer and stability test scheme - Google Patents
A kind of vertical rotor dynamic radial load maintainer and stability test scheme Download PDFInfo
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- CN104215441B CN104215441B CN201410419446.8A CN201410419446A CN104215441B CN 104215441 B CN104215441 B CN 104215441B CN 201410419446 A CN201410419446 A CN 201410419446A CN 104215441 B CN104215441 B CN 104215441B
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Abstract
The invention provides a kind of vertical rotor dynamic radial load maintainer based on certain canned motor pump vertical rotor Test-bed Design and stability test scheme, including housing, support and handwheel, support is located in housing and can be internal mobile along it, and one end of support is provided with two runners and stretches out housing.A handwheel passes sequentially through screw-driven part and bolt puts in housing and is connected with support on the other end of housing, and rotating handwheel can make outer side shifting of the support to main casing.Radial loaded mechanism is arranged on a testing stand shell, and a rotor being connected with motor output shaft by shaft coupling is provided with testing stand shell, and runner is close to shaft coupling；Experimental rig also includes data acquisition recorder and coupled force cell and displacement transducer, force cell is used to measure the radial direction force data of screw-driven part generation, displacement transducer is used to measure rotor after radial loaded in rotation process, orthogonal two displacements radially in the plane of rotor rotation axis.
Description
Technical field
Loaded with testing stand vertical rotor dynamic radial the invention belongs to fluid machinery technical field, more particularly to canned motor pump
Mechanism and stability test scheme.
Background technology
Canned motor pump is a kind of unprssurized pump, and impeller and rotor are sealed in stator casing, and stator casing uses quiet
Sealing, and provide rotating excitation field by a winding and drive rotor.The driving of Ordinary Centrifugal Pumps is by pump by shaft coupling
Impeller axle is connected with electronic axle, impeller is rotated together with motor and is worked.There is long-term operating seal failure in conventional pump
The problem of the liquid leakage for causing, and the structure of canned motor pump eliminates the sealing device for rotary shaft that conventional centrifugal pump has, therefore energy
Accomplish complete No leakage, thus can be used to conveying with it is corrosive, be pernicious to people（Such as severe toxicity, radioactivity）, it is inflammable and explosive
And expensive or other special liquid.
The main pump of nuclear power station is located at nuclear island cardia, is nuclear power fortune for cooling water is pumped into evaporator conversion thermal energy
Turn the key of control water circulation, belong to the first device of nuclear power station.Nuclear reactor main pump has shaft seal pump, a wet-wound group pump, shielding
Pump.Currently Devoting Major Efforts To Developing and research be canned motor pump form main pump, in the course of work of such main pump, due to impeller
The asymmetric design of pump shell structure, the liquid being transported asymmetry quantum dot in pump, asymmetry quantum dot can be by impeller to pump
Main shaft applies the counter-force of radial direction, allows vertical rotor to have fixed rotation position, and then improves rotor stability, reduces vibration and makes an uproar
Sound, but the problems such as but bring bearing wear.For the influence that Study of Fluid radial load is brought to rotor stability, it is necessary to
A kind of mechanism is designed on canned motor pump vertical rotor testing stand to simulate the radial load of fluid generation.
The content of the invention
In order to solve the above problems, the invention provides a kind of vertical rotor dynamic radial load maintainer, the dynamic footpath
Include housing, support, screw-driven part and handwheel to load maintainer, wherein,
The housing is in the box like structure of one end open, and the support is located in the housing and the housing is stretched out in one end
Opening, at least provided with a runner on the external part of the support；
The screw-driven part is put in the housing from the other end of the housing, and is threadedly coupled with the housing,
One end that the screw-driven part puts in the housing is connected with the support；The handwheel is arranged on the screw-driven part position
The screw-driven part is rotated and the support edge is axially promoted in the handwheel on one end of the hull outside, is rotated
The main casing is moved radially.
It is preferred that the external part of the support is in arc-shaped, described turning is respectively arranged with the two ends of the support circular arc
Wheel.
It is preferred that the runner includes rotating shaft, bearing and bearing outside, the rotating shaft is set on the bracket and wherein
Perpendicular to the moving direction of the support, the bearing outside is set in the rotating shaft heart axle by the bearing.
It is preferred that the rotating shaft is fixed on the bracket by the stop nut.
It is preferred that the screw-driven part is located on one end of the hull outside is provided with location nut.
It is preferred that the screw-driven part is bolted the support, force cell is provided with the bolt,
The force cell is also connected with a data acquisition recorder.
It is preferred that the data acquisition recorder is also associated with two for measuring rotor perpendicular to the flat of its rotary shaft
Two displacement transducers of orthogonal radial direction top offset in face.
It is preferred that the vertical rotor dynamic radial load maintainer also includes testing stand shell, motor, the motor support base
It is installed on the testing stand shell by motor support base, a rotor is located in testing stand shell, the output shaft of the motor leads to
Shaft coupling is crossed to be connected with the rotor；
The radial loaded mechanism be arranged on the testing stand shell on, and vertically with the rotation axis of the rotor, institute
Runner is stated to be close on the shaft coupling.
Present invention also offers a kind of vertical rotor stability test scheme, using vertical rotor as described above dynamic footpath
To load maintainer, comprise the following steps that：
Step 1, starts the motor, and rotor described in the motor drag is rotated；
Step 2, rotates the handwheel, and the handwheel drives the screw-driven part and moves axially, the screw-driven
Part promotes the runner of the bracket end along the radial motion of the rotor, and causes that the runner is fitted in the shaft coupling
On surface；
Step 3, vertical rotor experimental rig also includes force cell, displacement transducer and data acquisition recorder,
The force cell measures the axis thrust of the screw-driven part, rotor described in the displacement sensor perpendicular to
Two orthogonal displacements radially in the plane of its rotary shaft, the force cell and institute's displacement sensors will be obtained
The data for obtaining are transferred to data acquisition recorder；
Step 4, shaft core position and its dynamic when the data analysis rotor transmitted according to institute's displacement sensors rotates become
Law；The data that the force cell is transmitted carry out coupling analysis with the data of institute's displacement sensors transmission, obtain
The rotation status characteristic of different radial load state lower rotor parts, and find optimal rotor radial power.
The present invention is allowed to compared with prior art, have the following advantages that and actively imitate due to using above technical scheme
Really：
A kind of vertical rotor dynamic radial load maintainer, experimental rig and stability test scheme that the present invention is provided, can
To realize the function of the asymmetric radial load of dynamic load, with reference to sensor and data acquisition and analysis system, on-line testing analysis turns
Sub- stability, for shielding pump rotor hydrodynamics design and optimization provides test data reference, may advantageously facilitate shielding pump rotor
Equipment is improved；Simple structure of the present invention, easy to operate simultaneously.
Brief description of the drawings
With reference to accompanying drawing, by hereafter state detailed description, can be more clearly understood that above-mentioned and other feature of the invention and
Advantage, wherein：
Fig. 1 is one figure for the structure of vertical rotor dynamic radial load maintainer；
Fig. 2 is the connection diagram of vertical rotor dynamic radial load maintainer；
Fig. 3 is the structural representation of rotor dynamic radial load testing machine.
Symbol description：
1- screw-driven part 2- bolt 3- fixing nuts
4- spring shim 5- handwheel 6- location nuts
7- force cell 8- end cap 9- supports
10- loosens nut 11- bearing outside 12- rotating shafts
13- bearing 14- shaft coupling 15- motors
16- output shaft 17- motor support base 18- rotors
19- data acquisition recorder 20- displacement transducer 21- testing stand shells.
Specific embodiment
Referring to the accompanying drawing for showing the embodiment of the present invention, the present invention is described in more detail.However, the present invention can be with
Many multi-forms realize, and should not be construed as and limited by the embodiment for herein proposing.Conversely, proposing that these embodiments are
In order to reach abundant and complete disclosure, and those skilled in the art are made to understand the scope of the present invention completely.These are attached
In figure, for clarity, the size and relative size in layer and region are may be exaggerated.
With reference to Fig. 1-3, the invention provides a kind of vertical rotor dynamic radial load maintainer, it is adaptable to shield pump rotor
Radial loaded test, certainly the present invention using object and it is unlikely be confined to shielding pump rotor, can be made by appropriate structural adjustment
Its radial loaded for being applied to other rotational structures, is not restricted herein.
Specifically, the vertical rotor radial loaded mechanism is including housing, support, screw-driven part, handwheel etc.；Wherein, shell
Body is collectively forming the box like structure of one end open by main body and end cap 8, and handwheel 5 is fixedly attached to screw thread and passes by fixing nut 3
On one end of moving part 1；Screw thread is provided with the other end of screw-driven part 1, and the other end of screw-driven part 1 passes through end cap 8
Put in housing, be threadedly coupled between the other end and end cap 8 of screw-driven part 1, rotation hand wheel 5 drives 1 turn of screw-driven part
It is dynamic to realize axial displacement simultaneously；In the present embodiment, location nut 6 is additionally provided with screw-driven part 1, location nut 6 is located at
Near the side of end cap 8, location nut 6 is used to limit the axial movement displacement of screw-driven part 1 for the outside of housing.9, support
In in housing, and can be moved along the inside of housing, one end of support 9 is stretched out from the opening of housing；Screw-driven part 1 puts in housing
One end on be also associated with a bolt 2, one end of bolt 2 is fixedly connected with screw-driven part 1, and the other end of bolt 2 is connected to
On support 9；Screw-driven part 1 drives bolt 2 to move axially, and bolt 2 drives support 9 to move axially again.
In the present embodiment, two runners are provided with the other end of support 9.Specifically, the external part of support 9 is in circular arc
Shape, two runners are separately mounted on the two ends of support circular arc, and center line of the runner on support 9 is symmetrical arranged, and raising connects
Touch stability；Runner includes rotating shaft 12, bearing 13, bearing outside 11, and rotating shaft 12 is set perpendicular to the upper and lower end face of support 9,
And rotating shaft 12 is connected by stop nut 10 with support 9；Bearing outside 11 is set on the lateral wall of rotating shaft 12 by bearing 13,
And cause that the axis that bearing outside 11 can be around the shaft rotates；The exterior sidewall portions of bearing outside 11 stretch out support 9, and and support
9 circular arc portion is collectively forming whole arc structure；The number that is provided with of certain runner is not limited to that, can be according to specific feelings
Condition is selected, and is not restricted herein.
In the present embodiment, the vertical rotor dynamic radial load maintainer is also passed including data acquisition recorder 19, dynamometry
Sensor 7 and displacement transducer 20, force cell 7 and displacement transducer 20 are connected with data acquisition recorder 19.Dynamometry is passed
Sensor 7 is arranged on bolt 2, and the thrust of bolt 2 is passed to for measuring screw-driven part 1, and transmits relevant data to number
According to acquisition and recording instrument 19.Two displacement transducers 20 are included in the present embodiment, and two displacement transducers 20 are mutually perpendicular to peace
Dress, two displacement transducers 20 are respectively used in measurement rotor rotation process, in the plane of rotor shaft two
Orthogonal displacement radially, for example, in a plane of rotor shaft, there are some processes turn thereon
Son radially of the axis of rotation, mainly measures the displacement of the orthogonal radial direction upper rotor part of two of which in the present invention；Two displacements
Related data is passed to data acquisition recorder 19 by sensor 20, in order to be subsequently used for the analysis to rotor stability.
Reference picture 3, the present invention provide a kind of vertical rotor dynamic radial load maintainer, also including testing stand shell 21,
Motor 15 and motor support base 17, testing stand shell 21 are arranged on a testing stand, and motor 15 is arranged on examination by electric machine support 17
Test the upper end of platform shell 21；One rotor is installed on inside testing stand shell 21, the output shaft 16 of motor by a shaft coupling 14 with
Rotor coaxial is connected, so as to may be such that the rotor driven of motor 15 is rotated.Housing is installed on testing stand shell 21, and bracket end
Runner it is relative with shaft coupling 14, the axis of runner and the diameter parallel of rotor, and cause center line, the axle of bolt 2 of support
Line, the axis of threaded coupling nut are located at and are same as on straight line and perpendicular to the axis of rotor.
Running below in conjunction with the vertical rotor dynamic radial load maintainers of accompanying drawing 1-3 is made further specifically
It is bright：
When static, testing stand shell 21 is vertically installed on a testing stand by plumb line, and motor support base 17 passes through bolt
Connection is arranged on testing stand shell 21, and dragging motor 15 is bolted on motor support base 17, the output of motor
Axle 16 is realized installing and is connected by shaft coupling 14 and rotor 18, and rotor 18 is arranged on inside testing stand shell 21, and two displacements are passed
Sensor 20 is mutually perpendicular to be arranged on testing stand shell 21, and radial loaded mechanism is arranged on motor support base 17, is rotated with rotor
Axis is vertical, and force cell 7 is arranged on bolt 2, and the data wire drawn from each sensor is connected to data acquiring and recording
On instrument 19.
During test, start dragging motor 15, motor output shaft 16 is rotated by the rotor driven 18 of shaft coupling 14, turn clockwise
Start wheel 5, drive screw-driven part 1 to rotate, form straight-line displacement and promote force cell 7, and then pushed away by force cell
Dynamic support 9 marches forward with two runners along orbital drive, and fits to the surface of shaft coupling 14, makees with rotation.Rotor 18
In rotation process, the vibration of generation is measured by two displacement transducers of orthogonal installation 20, the radial load size of loading
Measured by force cell 7, whole measurement data are gathered and recorded by data acquisition recorder 19.In measurement process, rotor
18 have been at rotation status, therefore the invention belongs to dynamic measurement.Measurement is finished, rotate counterclockwise handwheel 5 can make runner to
Away from the direction motion of shaft coupling 14, radial load is cancelled, be then shut off dragging motor 15.
The data obtained by displacement transducer 20 can be used to analyze the shaft core position and its dynamic change when rotor 18 rotates
Rule, the data obtained by force cell 7 can be used to carry out coupling analysis with displacement data, obtain under different radial load states
The rotation dynamic characteristic of rotor, and find optimal radial power.
A kind of vertical rotor dynamic radial load maintainer that the present invention is provided, can realize dynamic load, with reference to sensor
And data acquisition and analysis system, on-line testing analysis rotor stability, for the hydrodynamics of the equipment rotors such as shielding pump rotor sets
Meter provides test data reference with optimization.
Present invention also offers a kind of vertical rotor stability test scheme, specifically tried using vertical rotor as described above
Experiment device, comprises the following steps that：
The first step, starts motor so that motor drag rotor is rotated；
Second step, rotates handwheel, and handwheel drives the axial movement of screw-driven part, and screw-driven part is by being arranged on bolt
A force cell and bolt drive bracket end runner along rotor radial motion, and cause runner be fitted in shaft coupling
On the surface of device；
3rd step, force cell measures the axis thrust of screw-driven part, displacement sensor rotor axial displacement
And radial displacement, the data of acquisition are transferred to data acquisition recorder by force cell and displacement transducer；
4th step, shaft core position and its dynamic change rule when the data analysis rotor transmitted according to displacement transducer rotates
Rule；The data that force cell is transmitted carry out coupling analysis with the data of displacement transducer transmission, obtain different radial load shapes
The rotation status characteristic of state lower rotor part, and find optimal rotor radial power.
In sum, the invention provides a kind of vertical rotor dynamic based on certain canned motor pump vertical rotor Test-bed Design
Radial loaded mechanism and stability test scheme, including housing, support and handwheel, support are located in housing and can be along its internal shiftings
Dynamic, one end of support is provided with two runners and stretches out one end of housing, improves radial loaded mechanical stability.Housing it is another
The upper handwheel in end passes sequentially through screw-driven part and bolt puts in housing and is connected with support, and rotating handwheel can make support to master
The outer side shifting of housing.Radial loaded mechanism is arranged on a testing stand shell, and one is provided with testing stand shell by shaft coupling
The rotor that device is connected with motor output shaft, runner is close to shaft coupling；Experimental rig also include data acquisition recorder and and its
Connected force cell and displacement transducer, force cell is used to measure the radial direction force data of screw-driven part generation, position
Displacement sensor is used to measure rotor after radial loaded in rotation process, is mutually perpendicular in the plane of rotor rotation axis
Two displacements radially.
Those skilled in the art should be understood that the present invention can be implemented without departing from this with many other concrete forms
The spirit or scope of invention.Although having been described for embodiments of the invention, it should be understood that the present invention should not be limited to these embodiments,
Change is made within the spirit and scope of the invention that those skilled in the art can define such as appended claims and is repaiied
Change.
Claims (7)
1. a kind of vertical rotor stability test method, it is characterised in that vertical rotor dynamic radial load maintainer include housing,
Support, screw-driven part and handwheel, wherein,
The housing is in the box like structure of one end open, and the support is located in the housing and opening for the housing is stretched out in one end
Mouthful, at least provided with a runner on the external part of the support；The external part of the support is in arc-shaped, the support circular arc
Two ends on be respectively arranged with the runner;
The screw-driven part is put in the housing from the other end of the housing, and is threadedly coupled with the housing, described
One end that screw-driven part puts in the housing is connected with the support；The handwheel is arranged on the screw-driven part positioned at institute
State on one end of hull outside, rotate the handwheel and cause that the screw-driven part is rotated and axially promotes the support to described
The outer side shifting of housing；
Vertical rotor dynamic radial load maintainer, also including testing stand shell and motor, the motor is installed by motor support base
Onto the testing stand shell, a rotor is located in testing stand shell, and the output shaft of the motor passes through shaft coupling with described turn
Son is connected；
Vertical rotor stability test method is comprised the following steps that：
Step 1, starts the motor, and rotor described in the motor drag is rotated；
Step 2, rotates the handwheel, and the handwheel drives the screw-driven part and moves axially, and the screw-driven part is pushed away
The runner of the bracket end is moved along the radial motion of the rotor, and causes that the runner is fitted in the surface of the shaft coupling
On；
Step 3, vertical rotor experimental rig also includes force cell, displacement transducer and data acquisition recorder, described
Force cell measures the axis thrust of the screw-driven part, and rotor described in the displacement sensor is perpendicular to its rotation
Two orthogonal displacements radially in the plane of rotating shaft, the force cell and institute's displacement sensors by obtain
Data are transferred to data acquisition recorder；
Step 4, shaft core position and its dynamic change rule when the data analysis rotor transmitted according to institute's displacement sensors rotates
Rule；The data that the force cell is transmitted carry out coupling analysis with the data of institute's displacement sensors transmission, obtain difference
The rotation status characteristic of radial load state lower rotor part, and find optimal rotor radial power.
2. according to the vertical rotor stability test method described in claim 1, it is characterised in that the runner includes rotating shaft, axle
Hold and bearing outside, the rotating shaft set on the bracket and central shaft perpendicular to the support moving direction, it is described
Bearing outside is set in the rotating shaft by the bearing.
3. according to the vertical rotor stability test method described in claim 2, it is characterised in that the rotating shaft passes through stop nut
Fix on the bracket.
4. according to the vertical rotor stability test method described in claim 1, it is characterised in that the screw-driven part is located at institute
State and location nut is provided with one end of hull outside.
5. according to the vertical rotor stability test method described in claim 1, it is characterised in that the screw-driven part passes through spiral shell
Tether and connect the support, be provided with force cell on the bolt, the force cell also with a data acquisition recorder
It is connected.
6. according to the vertical rotor stability test method described in claim 5, it is characterised in that the data acquisition recorder is also
Two are connected with for measuring rotor in the plane of its rotary shaft two displacements of orthogonal radial direction top offset
Sensor.
7. according to the vertical rotor stability test method described in any one in claim 1-6, it is characterised in that the footpath
It is arranged on the testing stand shell to load maintainer, and perpendicular to the rotation axis of the rotor, the runner is close to described
Shaft coupling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410419446.8A CN104215441B (en) | 2014-08-22 | 2014-08-22 | A kind of vertical rotor dynamic radial load maintainer and stability test scheme |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410419446.8A CN104215441B (en) | 2014-08-22 | 2014-08-22 | A kind of vertical rotor dynamic radial load maintainer and stability test scheme |
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| CN104215441A CN104215441A (en) | 2014-12-17 |
| CN104215441B true CN104215441B (en) | 2017-06-13 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104634562B (en) * | 2015-02-05 | 2017-02-22 | 南京理工大学 | Bearing direction manual loading mechanism and loading method for rolling linear guide rail pair |
| CN105181325B (en) * | 2015-10-26 | 2019-01-22 | 东方电气集团东方电机有限公司 | A kind of rotor mechanical model device of motor |
| CN106907336B (en) * | 2017-03-13 | 2019-04-30 | 江苏大学 | A kind of mixed-flow pump impeller instantaneous radial measuring device and method |
| CN108519233A (en) * | 2018-05-31 | 2018-09-11 | 江苏省机械研究设计院有限责任公司 | A kind of rotary shaft radial loaded experimental rig |
| CN112461641B (en) * | 2020-12-08 | 2022-01-04 | 哈尔滨理工大学 | One-way thread transmission static force loading device |
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| SU1543278A1 (en) * | 1987-12-29 | 1990-02-15 | Войсковая часть 75360 | Device for checking condition of rolling-contact bearings |
| CN201749059U (en) * | 2010-07-02 | 2011-02-16 | 贵州风雷航空军械有限责任公司 | Loading device for test |
| CN201935802U (en) * | 2010-12-16 | 2011-08-17 | 上海聚德永升测控系统有限公司 | Rotary loading mechanism |
| CN102809488A (en) * | 2012-08-09 | 2012-12-05 | 浙江传媒学院 | Loading mechanism of mute life testing machine of rolling bearing |
| CN202808162U (en) * | 2012-09-10 | 2013-03-20 | 河北长江中远吊索具有限公司 | Hanger shaft device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103604595B (en) * | 2013-11-27 | 2016-03-23 | 湖南三一路面机械有限公司 | A kind of road roller steel wheel proving installation |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1543278A1 (en) * | 1987-12-29 | 1990-02-15 | Войсковая часть 75360 | Device for checking condition of rolling-contact bearings |
| CN201749059U (en) * | 2010-07-02 | 2011-02-16 | 贵州风雷航空军械有限责任公司 | Loading device for test |
| CN201935802U (en) * | 2010-12-16 | 2011-08-17 | 上海聚德永升测控系统有限公司 | Rotary loading mechanism |
| CN102809488A (en) * | 2012-08-09 | 2012-12-05 | 浙江传媒学院 | Loading mechanism of mute life testing machine of rolling bearing |
| CN202808162U (en) * | 2012-09-10 | 2013-03-20 | 河北长江中远吊索具有限公司 | Hanger shaft device |
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