CN207571274U - Motor Measuring System - Google Patents
Motor Measuring System Download PDFInfo
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- CN207571274U CN207571274U CN201721523614.3U CN201721523614U CN207571274U CN 207571274 U CN207571274 U CN 207571274U CN 201721523614 U CN201721523614 U CN 201721523614U CN 207571274 U CN207571274 U CN 207571274U
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- measuring system
- motor
- bearing
- motor measuring
- axle sleeve
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Abstract
The utility model provides a kind of Motor Measuring System.The Motor Measuring System includes the fixture for clamping motor stator to be measured, the connecting shaft for the dynamometer machine of testing the power of motor to be measured and with the stretching axis connection of the dynamometer machine；The Motor Measuring System further includes bearing, and the bearing includes the axle sleeve for connecting the main shaft of the connecting shaft and being sheathed on outside the main shaft；Wherein, the axle sleeve is fixedly installed with the fixture, and the main shaft is suspended in the axle sleeve.The Motor Measuring System of offer according to the present utility model, by will be with treating that the main shaft that the rotor of measured motor is connect is suspended in axle sleeve, it avoids during main axis and the inner wall of axle sleeve is in direct contact, reduce the mechanical friction loss of Motor Measuring System, improve the stability and consistency during electromechanical testing.
Description
Technical field
The utility model belongs to Motor Measuring Technology field, and in particular to a kind of Motor Measuring System.
Background technology
For freezer compressor in development process, electric efficiency greatly determines the energy-saving effect of compressor；In addition,
Compressor product pursues high performance-price ratio, and motor is needed to accomplish the power demand for rationally meeting compressor pump load.At both
In the case of, technical staff is required for carrying out output power, rotating speed, electric current and efficiency evaluation by motor performance test platform, to sentence
The quality of disconnected designing scheme.
Motor performance test equipment is more at present, as shown in Figure 1, motor performance test equipment includes stable voltage frequency conversion power supply
1 ', testboard bay 2 ', dynamometer machine 3 ', tested motor fixture 4 ', Dynamometer Control device 5 ', power analyzer 6 ', data are installed
Acquisition process software computer 7 '.Equipment shown in FIG. 1 is suitble to test the industrial standard motor of included shell end cover, and Fig. 2 is surveyed for it
Examination principle follows motor energy flow chart, wherein shown in Fig. 2：P1- power input to machine, pCu1- stator copper loss, pFe- stator iron
Damage, PM- electromagnetic power, pCu2- copper loss of rotor, PΩ- overall mechanical power, pΩ- mechanical loss, ph- added losses, P2- electricity
Machine output power.
For motor performance test equipment shown in FIG. 1 by Dynamometer Control device 5 ', the torque that control dynamometer machine 3 ' exports is big
It is small, analog mechanical load is come with this.Constantly acquire tested motor instantaneous velocity n and input power P1, pass through the following formula backstage
Efficiency value η of the tested motor under this load torque is calculated：
P2=Tn/60*2 π
η=P2/P1
However, for refrigeration compressor motor class shellless motor, using above equipment, tested motor installation can be faced and surveyed
Try precision problem.
Patent ZL200520064759.2 discloses a kind of compressor electric motor test fixture, can solve similar such as air-conditioning and ice
, there is the problem of test is difficult when thering is no shell and end cap in header compressor motor, the fixture maximum feature be suitable for it is certain
In the range of compressor electric motor appearance and size, generalization is preferable.But there is bearing seat mechanism in its structure, between supporting sleeve and main shaft,
The ball bearing at both ends has rolling friction loss, although its mechanical friction loss absolute value is smaller, in refrigerator compressor motor
Accounting is but very big in this kind of small and special electric machine loss, influences the precision of test, intuitively shows same motor testing efficiency twice
It fluctuates more than 3 points.
Patent ZL200920311716.8 discloses a kind of shellless motor test device, and measurement of power is equipped on test platform
Machine and bearing block, general-purpose machine main shaft are mounted in the bearing in bearing block, the test axis connection of main shaft one end and dynamometer machine, separately
There is the special fixture of installation rotor in one end, and there are one the stators that can be removed for rotor housing.Letter is operated during the device to test motor
It is single, increase substantially shellless motor testing precision.But due to the presence of bearing block and bearing, still there is mechanical frictional dissipation,
Influence the stability and consistency of electromechanical testing data.
Utility model content
Therefore, the technical problem to be solved by the present invention is to provide a kind of Motor Measuring System, to solve without shell electricity
Machine stability and the technical issues of not high consistency when being tested in Motor Measuring System.
To solve the above-mentioned problems, the utility model provides a kind of Motor Measuring System, and measured motor is treated including being used to clamp
The fixture of stator, the connection for the dynamometer machine of testing the power of motor to be measured and with the stretching axis connection of the dynamometer machine
Axis；The Motor Measuring System further includes bearing, and the bearing includes connecting the main shaft of the connecting shaft and be sheathed on described
Axle sleeve outside main shaft；Wherein, the axle sleeve is fixedly installed with the fixture, and the main shaft is suspended in the axle sleeve.
Preferably, the bearing is air-bearing.
Preferably, the Motor Measuring System further include for the bearing provide gas air source, the air source with
The bearing connection.
Preferably, the Motor Measuring System further includes pressure regulator, and the pressure regulator is set to the air source and the axis
On air flue between holding.
Preferably, the Motor Measuring System further includes control switch, and the control switch is set to the air source and institute
It states on the air flue between bearing.
Preferably, the Motor Measuring System further includes the device for drying and filtering for drying the air source, described dried
Filter is set on the air flue between the air source and the bearing.
Preferably, the Motor Measuring System further includes the power analyzer being connect with the dynamometer machine.
Preferably, the dynamometer machine includes measurement of power machine host and the Dynamometer Control for controlling the measurement of power machine host
Device.
Preferably, the dynamometer machine further includes the dynamometer machine cooling device for cooling down the measurement of power machine host, the survey
Work(machine cooling device is set on the measurement of power machine host.
Preferably, the bearing is magnetic suspension bearing.
Preferably, the Motor Measuring System include for control the magnetic suspension bearing magnetically suspended bearing and
Monitor the position sensor of the magnetic suspension bearing.
Motor Measuring System provided by the utility model, by will be with treating that the main shaft that the rotor of measured motor is connect is suspended in axis
It in set, avoids during main axis and the inner wall of axle sleeve is in direct contact, reduce the mechanical friction loss of Motor Measuring System, improve electricity
Stability and consistency when machine is tested.
Description of the drawings
Fig. 1 is the structure diagram of the Motor Measuring System of the prior art；
Fig. 2 is the motor energy flow chart of Motor Measuring System shown in FIG. 1；
Fig. 3 is the structure diagram of the Motor Measuring System of the utility model embodiment；
Fig. 4 is the fixture of the utility model embodiment and the fit structure schematic diagram of bearing；
Fig. 5 is the left view of Fig. 4；
Fig. 6 is the flow chart of the electromechanical testing method of the utility model embodiment.
Reference numeral is expressed as：
1 ', stable voltage frequency conversion power supply；2 ', testboard bay；3 ', dynamometer machine；4 ', tested motor fixture；5 ', Dynamometer Control
Device；6 ', power analyzer；7 ', computer；
1st, fixture；21st, measurement of power machine host；22nd, Dynamometer Control device；23rd, dynamometer machine cooling device；3rd, connecting shaft；4th, axis
It holds；41st, main shaft；42nd, axle sleeve；5th, power supply；6th, testboard bay；7th, power analyzer；8th, data acquisition and processing (DAP) device；9th, air source；
10th, pressure regulator；11st, control switch；12nd, device for drying and filtering.
Specific embodiment
In following each embodiments of the utility model, it is for only for ease of and structure is described, it is not new to this practicality
The claimed structure of type is limited.
With reference to shown in referring to Fig. 3 to Fig. 5, embodiment according to the present utility model, the utility model provides a kind of motor
Test system, including be used to clamping motor stator to be measured fixture 1, for test power of motor to be measured dynamometer machine, with it is described
The connecting shaft 3 of the stretching axis connection of dynamometer machine and bearing 4, bearing 4 include connecting the main shaft 41 of the connecting shaft 3 and be sheathed on
Axle sleeve 42 outside main shaft 41；Wherein, axle sleeve 42 is fixedly installed with fixture 1, and main shaft 41 is suspended in axle sleeve 42.The utility model leads to
Cross with treating that the main shaft 41 that the rotor of measured motor is connect is suspended in axle sleeve 42, when avoiding the main shaft 41 from rotating with the inner wall of axle sleeve 42
It is in direct contact, reduces the mechanical friction loss of Motor Measuring System, improve the stability and consistency during electromechanical testing.
Specifically, as shown in figure 3, the Motor Measuring System of the utility model includes power supply 5, by power supply 5 to entire electricity
Machine tests system power supply.In a preferred embodiment, the power supply 5 of the utility model is frequency conversion regulated power supply, to meet electricity
Machine tests the demand of system.
With reference to referring to Fig. 4 and Fig. 5, the fixture 1 of the Motor Measuring System of the utility model is set with the fixation of axle sleeve 42 of bearing 4
Put, connecting shaft 3 pass through fixture 1 and with the stretching axis connection of dynamometer machine, connecting shaft 3 is suspended in the center of fixture 1.Connect outside main shaft 41
Spindle 3 in succession, and the main shaft 41 is suspended in axle sleeve 42, the accuracy of manufacture of main shaft 41 is high than the precision of connecting shaft 3, to work as
In rotation process, even if main shaft 41 is contacted with the inner wall of axle sleeve 42, the friction of main shaft 41 and axle sleeve 42 can be also reduced.In another tool
In body embodiment, Motor Measuring System further includes testboard bay 6, can be by bearing 4, fixture 1 and dynamometer machine as testboard
On frame 6.
The dynamometer machine of the utility model includes measurement of power machine host 21 and the dynamometer machine for measurement of power machine host 21 to be controlled to work
Controller 22.Dynamometer Control device 22 can be disposed in measurement of power machine host 21 or independently of measurement of power machine host 21
's.In a preferred embodiment, dynamometer machine further includes the dynamometer machine cooling device 23 for cooling down measurement of power machine host 21, surveys
Work(machine cooling device 23 can be directly arranged on measurement of power machine host 21, worked and overheated to avoid measurement of power machine host 21, influence electricity
Machine tests the test result of system.
The Motor Measuring System of the utility model further includes the power analyzer 7 being connect with dynamometer machine, for measuring measurement of power
The power or other parameter of machine.
The Motor Measuring System of the utility model further includes data acquisition and processing (DAP) device 8, in a tool of the utility model
In body embodiment, the data acquisition and processing (DAP) device 8 of the utility model can be computer, loading data acquisition and processing on computer
Software；In other implementations, the data acquisition and processing (DAP) device 8 of the utility model can also be other electronic equipments, such as
It is mounted with the mobile phone of data acquisition and processing (DAP) software.Data acquisition and processing (DAP) device 8 and Dynamometer Control device 22 and power analyzer 7
Connection obtains the related data of Dynamometer Control device 22 and power analyzer 7, is analyzed with treating measured motor.
General description for the Motor Measuring System of the utility model above, in a specific embodiment, this practicality
Novel bearing 4 can be air-bearing, i.e., the air that certain pressure is imported in 42 intracavitary of axle sleeve causes main shaft 41 to be suspended in axis
Cover 42 intracavitary.Since the main shaft 41 of air-bearing is suspended in the rotation of 42 intracavitary of axle sleeve, can ensure when main shaft 41 rotates not
Mechanical friction can be generated with the inner wall of axle sleeve 42.
As shown in figure 3, in order to which 42 intracavitary of axle sleeve of air-bearing is given to provide gas so that in entire Motor Measuring System
In, the main shaft 41 of air-bearing will not all be contacted with the inner wall of axle sleeve 42, and the utility model additionally provides air source 9, and air source 9 passes through
Air flue is connected with bearing 4.In one preferred embodiment, the air source 9 of the utility model is pressure-stabilized air source 9, to give axle sleeve
42 intracavitary provide pressure-stabilized air source 9, and stable gas pressure then can effectively avoid contact of the main shaft 41 with 42 inner wall of axle sleeve.
In order to realize pressure regulation, pressure regulator 10 can also be set on the air flue between air source 9 and air-bearing.
In order to preferably control air source 9, control can also be set to switch on the air flue between air source 9 and air-bearing
11；In a specific embodiment, control switch 11 can be pressure switch.
Usually, bearing 4 belongs to accurate device, needs to ensure the drying of bearing 4, reduces the corrosion of bearing 4, therefore motor
Test system further includes the device for drying and filtering 12 for drying air source 9, device for drying and filtering 12 be arranged on air source 9 and air-bearing it
Between air flue on so that the air being transported in the axle sleeve 42 of air-bearing is dry.
In another particular embodiment of the invention, the bearing 4 of the utility model is magnetic suspension bearing, will using magneticaction
Main shaft 41 is suspended in axle sleeve 42, makes do not have Mechanical Contact between main shaft 41 and axle sleeve 42.Preferably, Motor Measuring System is also wrapped
It includes magnetically suspended bearing for controlling magnetic suspension bearing and monitors the position sensor of magnetic suspension bearing, with can be real-time
The position between the main shaft 41 of magnetic suspension bearing and axle sleeve 42 is monitored and controlled, prevents the inner wall between main shaft 41 and axle sleeve 42 from connecing
It touches, reduces the mechanical friction loss of Motor Measuring System, improve the stability and consistency during electromechanical testing.
As shown in fig. 6, the utility model additionally provides a kind of electromechanical testing method applied to above-mentioned Motor Measuring System,
Include the following steps：Whether the main shaft 41 of the bearing 4 of testing of electric motors test system contacts with axle sleeve 42；It will treat turning for measured motor
Son is connected to main shaft 41, treats that the stator of measured motor is fixed on the fixture 1 of Motor Measuring System；Open dynamometer machine；Setting test
Parameter；Open motor.
Specifically, step S1：Whether the main shaft 41 of test bearing 4 contacts with axle sleeve 42.
By taking air-bearing as an example, measured motor is being treated before Motor Measuring System, and first static debugging air-bearing can be used
Multimeter tests the steadying resistance value size between main shaft 41 and axle sleeve 42, easy can judge air flotation effect and main shaft 41 and axle sleeve 42
Gap size.The resistance value of multimeter test is if ∞, then it represents that air film is good, and air-bearing can work.It is if electric
Resistance comes and go or is zero, represents that main shaft 41 is contacted with axle sleeve 42, needs to remove main shaft 41 and cleans or repair.
Step S2：The rotor for treating measured motor is connected to main shaft 41, treats that the stator of measured motor is fixed on Motor Measuring System
Fixture 1 on.
Main shaft 41 is connected to after the main shaft 41 of test bearing 4 is not in contact with axle sleeve 42, then by the rotor for treating measured motor,
Treat that the stator of measured motor is fixed on the fixture 1 of Motor Measuring System.
After being assembled after measured motor, it can further pass through the main shaft 41 of above method exact p-value bearing 4 and axle sleeve 42
Whether there is contact, and debugged for test result.
Step S3：Open dynamometer machine.
Step S4：Test parameter is set.
Wherein, by pΩ=0, wherein pΩIt is lost for mechanical friction, when Motor Measuring System works, is worn, filled by bearing 4
With influence, p when testing every timeΩValue it is varied.P can be seen that by Fig. 2 of the prior artΩValue to P1Value influence ratio
It is larger, P1For power input to a machine.pΩValue it is big, P1Value it is big, electric efficiency is low；pΩValue it is small, P1Value it is small, motor effect
Rate is high.In the present embodiment, the main shaft 41 of bearing 4 is suspended in axle sleeve 42, can ignore substantially bearing 4 rub and assemble for
The influence of electromechanical testing result, therefore, if pΩ=0, the interference of mechanical friction can be excluded, improves the stability of Motor Measuring System
And consistency.
Step S5:Measured motor is treated in unlatching.
Above-mentioned electromechanical testing method since the main shaft of the Motor Measuring System of application is suspended in axle sleeve, can avoid leading
It is in direct contact when shaft rotation is dynamic with the inner wall of axle sleeve, eliminates the influence of the friction and assembling of bearing to electromechanical testing result；And
During the test, if pΩ=0, the interference of mechanical friction can be excluded, improves the stability and consistency of Motor Measuring System.
Below by taking air-bearing as an example, to illustrate that lower band has the test method of the Motor Measuring System of air-bearing：
Step S10：Air source 9 is connected, the air pressure of air source 9 is made to reach 4 × 105Pa；
In order to which air-bearing is made preferably to work, it need to ensure that air source 9 provides air pressure and reaches 4 × 105Pa, as air pressure is not up to
4×105Pa then can be pressurized or be exchanged air supply source 9 by pressure regulator 10.
Step S20：Whether the main shaft 41 of test air bearing contacts with axle sleeve 42；
Static debugging air-bearing is tested the steadying resistance value size between main shaft 41 and axle sleeve 42 using multimeter, can be sentenced
The gap size of disconnected air flotation effect and main shaft 41 and axle sleeve 42.The resistance value of multimeter test is if ∞, then it represents that air film is good
Good, air-bearing can work.If resistance variations are indefinite or are zero, represent that main shaft 41 is contacted with axle sleeve 42, need to remove
Main shaft 41 is cleaned or is repaired.
Step S30, the rotor for treating measured motor is connected to main shaft 41, treats that the stator of measured motor is fixed on Motor Measuring System
Fixture 1 on.
Main shaft 41 is connected to after the main shaft 41 of test bearing 4 is not in contact with axle sleeve 42, then by the rotor for treating measured motor,
Treat that the stator of measured motor is fixed on the fixture 1 of Motor Measuring System.
After being assembled after measured motor, if it is necessary, may further confirm that whether are the main shaft 41 of test bearing 4 and axle sleeve 42
There is contact, and debugged for test result.
Step S40, start frequency conversion regulated power supply 5, selection adjusts required supply voltage and frequency；
Step S50, dynamometer machine and power analyzer 7 are opened；
Step S60, data acquisition and processing (DAP) device is opened, setting configuration parameter selects suitable range ability；
Wherein, the p that will be configured in parameterΩ=0, pΩIt is lost for mechanical friction, other parameter setting can refer to the prior art.
Step S70, start and treat that measured motor operates, adjust the running frequency for the drive control device for treating measured motor；
Step S80, the loading torque of setting measurement of power machine host is adjusted；
Step S90, data after a certain period of time, are preserved and post-processed by stable operation.
To sum up, the utility model is by by with treating that the main shaft that the rotor of measured motor is connect is suspended in axle sleeve, avoiding main shaft
Be in direct contact during rotation with the inner wall of axle sleeve, reduce Motor Measuring System mechanical friction loss, improve electromechanical testing when it is steady
Qualitative and consistency.
For those skilled in the art it is easily understood that under the premise of not conflicting, above-mentioned each advantageous manner can be free
Ground combination, superposition.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.The above is only the preferred embodiment of the utility model, it is noted that for the art
For those of ordinary skill, under the premise of the utility model technical principle is not departed from, several improvement and modification can also be made,
These improvements and modifications also should be regarded as the scope of protection of the utility model.
Claims (11)
1. a kind of Motor Measuring System, including being used to clamping the fixture (1) of motor stator to be measured, described treating measured motor for testing
The dynamometer machine of power and the connecting shaft (3) with the stretching axis connection of the dynamometer machine；It is characterized in that,
The Motor Measuring System further includes bearing (4), main shaft (41) of the bearing (4) including connecting the connecting shaft (3)
And it is sheathed on the axle sleeve (42) of the main shaft (41) outside；
Wherein, the axle sleeve (42) is fixedly installed with the fixture (1), and the main shaft (41) is suspended in the axle sleeve (42).
2. Motor Measuring System according to claim 1, which is characterized in that the bearing (4) is air-bearing.
3. Motor Measuring System according to claim 2, which is characterized in that the Motor Measuring System further include for
The bearing (4) provides the air source (9) of gas, and the air source (9) connects with the bearing (4).
4. Motor Measuring System according to claim 3, which is characterized in that the Motor Measuring System further includes pressure regulator
(10), the pressure regulator (10) is set on the air flue between the air source (9) and the bearing (4).
5. Motor Measuring System according to claim 3, which is characterized in that the Motor Measuring System further includes control and opens
It closes (11), the control switch (11) is set on the air flue between the air source (9) and the bearing (4).
6. Motor Measuring System according to claim 3, which is characterized in that the Motor Measuring System further includes to do
The device for drying and filtering (12) of the dry air source (9), the device for drying and filtering (12) are set to the air source (9) and the bearing
(4) on the air flue between.
7. Motor Measuring System according to claim 3, which is characterized in that the Motor Measuring System further include with it is described
The power analyzer (7) of dynamometer machine connection.
8. Motor Measuring System according to claim 1, which is characterized in that the dynamometer machine includes measurement of power machine host (21)
And the Dynamometer Control device (22) for controlling the measurement of power machine host (21).
9. Motor Measuring System according to claim 8, which is characterized in that the dynamometer machine further includes described for cooling down
The dynamometer machine cooling device (23) of measurement of power machine host (21), the dynamometer machine cooling device (23) are set to the measurement of power machine host
(21) on.
10. Motor Measuring System according to claim 1, which is characterized in that the bearing (4) is magnetic suspension bearing.
11. Motor Measuring System according to claim 10, which is characterized in that the Motor Measuring System includes controlling
Make the magnetically suspended bearing of the magnetic suspension bearing and the position sensor of the monitoring magnetic suspension bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721523614.3U CN207571274U (en) | 2017-11-15 | 2017-11-15 | Motor Measuring System |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721523614.3U CN207571274U (en) | 2017-11-15 | 2017-11-15 | Motor Measuring System |
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| Publication Number | Publication Date |
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| CN207571274U true CN207571274U (en) | 2018-07-03 |
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ID=62693279
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| CN201721523614.3U Active CN207571274U (en) | 2017-11-15 | 2017-11-15 | Motor Measuring System |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107907829A (en) * | 2017-11-15 | 2018-04-13 | 珠海格力节能环保制冷技术研究中心有限公司 | Motor Measuring System and method |
-
2017
- 2017-11-15 CN CN201721523614.3U patent/CN207571274U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107907829A (en) * | 2017-11-15 | 2018-04-13 | 珠海格力节能环保制冷技术研究中心有限公司 | Motor Measuring System and method |
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