CN205654539U - Conjugation measurement system of rotary compressor frictional behavior - Google Patents
Conjugation measurement system of rotary compressor frictional behavior Download PDFInfo
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- CN205654539U CN205654539U CN201620317841.XU CN201620317841U CN205654539U CN 205654539 U CN205654539 U CN 205654539U CN 201620317841 U CN201620317841 U CN 201620317841U CN 205654539 U CN205654539 U CN 205654539U
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- compressor
- conjugation
- moment
- torque sensor
- tested compressor
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Abstract
The utility model provides a conjugation measurement system of rotary compressor frictional behavior belongs to mechanical measurement system field. The utility model discloses based on " conjugation dynamometry principle ", on utilizing the moment generator to produce a conjugation moment promptly and exerting the pivot that receives the survey compressor with it, the mechanic does that the inflation moment that the intracavity produced is equivalent to this conjugation moment, the reversion is and synchronization with contracted by the pressure measurement, but cancel each other out to isolate and receive the survey compressor rotating the friction torque of in -process, further measure friction torque and receive the relation of survey compressor rotational speed, atmospheric pressure, corner, time etc.. The utility model overcomes isolate shortcomings such as frictional force difficulty, simulation experiment measurement simulated condition and pair and physical error are big on compressor body to have characteristics such as measuring error is little, the influence factor specification of variables is reliable.
Description
[technical field]
This utility model relates to mechanical measuring system field, and the conjugation particularly to a kind of rotary compressor frictional behavior measures system.
[background technology]
Rotary compressor is a kind of to have a large capacity and a wide range and affect deep typical volumes formula fluid machinery, is widely used in various gas pressure
Contracting equipment and refrigerating air conditioning device.For a long time, there is the defect that mechanical efficiency is low and service life is short in rotary compressor always,
Reason is that such compressor generally exists multiple kinematic pair easily deriving from friction and wear, wants to improve the machine of rotary compressor
Tool efficiency and service life, it is necessary for managing to reduce the fretting wear of its kinematic pair, and to realize this target, then have to be understood that
The frictional behavior of rotary compressor.
The frictional behavior of rotary compressor is relevant with factors such as compressor rotary speed, atmospheric pressure, lubrication state, temperature, existing rubs
Wipe characteristic measurement method and mainly take simulation experiment measurement method, the i.e. motion of the analog compression machine certain kinematic pair under actual condition
Situation, the frictional behavior of independent measurement gym suit.But there is shortcomings in these measuring methods: the compressor that (1) simulates is actual
There is the biggest error in operating mode, the most only considers the portions therein such as analog compression machine rotating speed, atmospheric pressure, lubrication state, temperature
Divide the impact of factor, it is impossible to consider comprehensively；(2) individually simulation is out done the movement pair surface tested and is differed with actual motion secondary surface
The biggest.Therefore, frictional behavior is measured it is critical only that of technology and is ensured that experiment condition is consistent with actual condition as far as possible, is preferably pressing
Testing on contracting machine body, but it is relatively big to isolate frictional force difficulty on compressor body, this utility model is given a kind of in compression
The measuring method of frictional behavior is measured on machine body.
[utility model content]
In view of the foregoing, it is necessary to provide a kind of rotary compressor frictional behavior conjugation measure system, this measurement system based on
" conjugation dynamometry principle ", i.e. utilizes torquer produce a conjugation moment and apply it in the rotating shaft of tested compressor,
This conjugation moment is equivalent with the moment that tested compressor operating intracavity working medium derives from, reverse and synchronize, with the gas of tested compressor
Volume expansion moment is cancelled out each other, thus isolates moment of friction, measures moment of friction and tested compressor rotary speed, air pressure further
The relation of power, corner, time etc..This utility model overcomes and isolates frictional force difficulty on compressor body, simulation experiment is surveyed
The shortcomings such as mensuration simulated condition and kinematic pair are big with actual error, and have that measurement error is little, influence factor's specification of variables is reliable
Etc. feature.
For reaching above-mentioned purpose, this utility model be the technical scheme is that
The conjugation of a kind of rotary compressor frictional behavior measures system, including operational module, measurement module and control module, described
Operational module includes DC servo-motor, tested compressor, torquer and source of the gas feeder, described DC servo motor,
Tested compressor and the most coaxial concatenation of torquer and run-in synchronism, source of the gas feeder is connected with tested compressor；Described survey
Amount module includes that micro-torque sensor, photoelectric encoder and high-torque sensor, described high-torque sensor are coaxially mounted to moment
Between generator and tested compressor；Described micro-torque sensor is coaxially mounted between tested compressor and DC servo motor；
Described photoelectric encoder is arranged on tested compressor near micro-torque sensor side；Described control module includes: PC, motor
Controller and load modulator, the conjugation moment of the compressor difference corner that described load modulator sets according to PC also controls power
Square generator runs, and the rotating speed of the different corners that electric machine controller sets according to PC also controls DC servo motor operation；Described
PC is connected with DC servo motor, is run by motor controller controls direct current generator；PC is connected with source of the gas feeder, logical
Cross control source of the gas feeder and produce atmospheric pressure to act on tested compressor；Micro-torque sensor, photoelectricity in described measurement module are compiled
Code device and high-torque sensor are connected with PC respectively.
The operation principle of the conjugation measurement system of a kind of rotary compressor frictional behavior of this utility model, comprises the following steps:
(1) corner maximum conjugation moment, the angular signal that described source of the gas feeder 8 sends, output pressure are measured according to PC 10
Power, produces the corresponding gas expansion moment acting on tested compressor 4 main shaft so that tested compressor 4 has rotation trend, PC
The moment values that machine 10 feeds back main-axis end according to torque sensor 5 sets the conjugation moment that this corner is corresponding, and control load regulation and control
Device 7 produces the conjugation moment moment with balancing main shaft axle head, and on PC 10, control moment generator 6 is stepped up conjugation power
Static friction torque in square value extremely tested compressor 4 disappears, and PC 10 records torquer 6 output conjugation moment size and makees
It is conjugated moment for corner maximum；
(2) changing corner size (numerical value), repeat the process in step (1), PC record preserves tested compressor in whole rotation
The maximum conjugation moment of different corners in the turn-week phase；
(3) moment of friction is measured, the rotating speed that described PC is set by the output of motor controller controls DC servo motor, PC
Measured the speed of mainshaft and the corner obtaining tested compressor 4 by photoelectric encoder 3, PC 10 is anti-according to photoelectric encoder 3
The data of feedback produce the conjugation moment of corresponding corner through load modulator 7 control moment generator 6, control source of the gas feeder simultaneously
8 expansive forces producing corresponding corner, make the speed of mainshaft of tested compressor 4 steadily arrive, and described PC passes according to micro-torque 2
Sensor measures the moment of friction in tested compressor 4 rotation process, as the moment of friction that corner is corresponding with this rotating speed；
(4) PC sets multiple different tachometer values, repeats the process of step (3), draw the moment of friction under corresponding rotating speed,
The numerical value of the atmospheric pressure p that corner, expansion moment set in advance are corresponding, PC 10 obtains according to measuring under multiple different tachometer values
The final matching of parameter value draw moment of friction and corner, time t, atmospheric pressure p, the relation curve of rotating speed.
Owing to using technique scheme, this utility model has the advantages that
(1) this utility model uses conjugation dynamometry principle, and torquer produces the gas tension of conjugation moment and tested compressor
Square is cancelled out each other, thus isolates moment of friction, overcomes and isolates the problem that frictional force is difficult on true compressor.
(2) this utility model the enterprising Mobile state of real rotary compressor measure, overcome simulation experiment measurement method simulated condition and
The shortcomings such as kinematic pair is big with actual error.
(3) this utility model uses moment output, atmospheric pressure output, rotating speed output, more uses closed loop system in rotating speed output,
The conjugation moment set, atmospheric pressure, rotating speed can be better controled over and feed back with the relation of corner, have measurement error little,
Influence factor's specification of variables reliably waits special feature.
(4) this utility model uses the multifactor whole process such as atmospheric pressure, rotating speed dynamically to change to measure compressor frictional force, and can be real-time
Display frictional force and the relation curve of atmospheric pressure, rotating speed etc., friction measurement is more comprehensively, fast.
[accompanying drawing explanation]
Fig. 1 is that the construction module of the conjugation measurement system of this utility model a kind of rotary compressor frictional behavior arranges schematic diagram.
Fig. 2 is the operation principle schematic diagram of the conjugation measurement system of this utility model a kind of rotary compressor frictional behavior.
Every explanation in accompanying drawing is:
1-DC servo motor；2-micro-torque sensor；3-photoelectric encoder；The tested compressor of 4-；5-high-torque sensor；6-power
Square generator；7-load modulator；8-source of the gas feeder；9-electric machine controller；10-PC machine.
[detailed description of the invention]
Below against accompanying drawing with combine optimal detailed description of the invention this utility model is explained in detail.
Fig. 1 is that the construction module of the conjugation measurement system of this utility model a kind of rotary compressor frictional behavior arranges schematic diagram.As
Shown in Fig. 1, the conjugation of a kind of rotary compressor frictional behavior measures system, including operational module, measurement module and control module,
Described operational module includes DC servo-motor 1, tested compressor 4, torquer 6 and source of the gas feeder 8, described directly
Flow servo motor 1, tested compressor 4 and the most coaxial concatenation of torquer 6 and run-in synchronism, source of the gas feeder 8 be subject to
Measured compressed machine 4 connects；Described measurement module includes micro-torque sensor 2, photoelectric encoder 3 and high-torque sensor 5, described
High-torque sensor 5 is coaxially mounted between torquer 6 and tested compressor 4；Described micro-torque sensor 2 is coaxially pacified
It is contained between tested compressor 4 and DC servo motor 1；Described photoelectric encoder 3 is arranged on tested compressor 4 near micro-power
Square sensor 2 side；Described control module includes: PC 10, electric machine controller 9 and load modulator 7, and described load is adjusted
Conjugation moment the control moment generator 6 of the different corner of tested compressor 4 that control device 7 sets according to PC 10 run, electricity
The rotating speed of the different corners that machine controller 9 sets according to PC 10 also controls DC servo motor 1 and runs；Described PC 10
It is connected with DC servo motor 1, controls DC servo motor 1 by electric machine controller 9 and run；PC 10 supplies with source of the gas
Device 8 connects, and produces atmospheric pressure by control source of the gas feeder 8 and acts on tested compressor 4；Micro-power in described measurement module
Square sensor 2, photoelectric encoder 3 and high-torque sensor 5 are connected with PC 10 respectively.
Fig. 2 is the operation principle schematic diagram of the conjugation measurement system of this utility model a kind of rotary compressor frictional behavior.Such as Fig. 2
Shown in, the work process of the conjugation measurement system of a kind of rotary compressor frictional behavior comprises the following steps:
(1) corner maximum conjugation moment, the angular signal that described source of the gas feeder 8 sends, output pressure are measured according to PC 10
Power, produces the corresponding gas expansion moment acting on tested compressor 4 main shaft so that tested compressor 4 has rotation trend, PC
The moment values that machine 10 feeds back main-axis end according to torque sensor 5 sets the conjugation moment that this corner is corresponding, and control load regulation and control
Device 7 produces the conjugation moment moment with balancing main shaft axle head, and on PC 10, control moment generator 6 is stepped up conjugation power
Static friction torque in square value extremely tested compressor 4 disappears, and PC 10 records torquer 6 output conjugation moment size and makees
It is conjugated moment for corner maximum；
(2) changing corner size (numerical value), repeat the process in step (1), PC record preserves tested compressor in whole rotation
The maximum conjugation moment of different corners in the turn-week phase；
(3) moment of friction is measured, the rotating speed that described PC is set by the output of motor controller controls DC servo motor, PC
Measured the speed of mainshaft and the corner obtaining tested compressor 4 by photoelectric encoder 3, PC 10 is anti-according to photoelectric encoder 3
The data of feedback produce the conjugation moment of corresponding corner through load modulator 7 control moment generator 6, control source of the gas feeder simultaneously
8 expansive forces producing corresponding corner, make the speed of mainshaft of tested compressor 4 steadily arrive, and described PC passes according to micro-torque 2
Sensor measures the moment of friction in tested compressor 4 rotation process, as the moment of friction that corner is corresponding with this rotating speed；
(4) PC sets multiple different tachometer values, repeats the process of step (3), draw the moment of friction under corresponding rotating speed,
The numerical value of the atmospheric pressure p that corner, expansion moment set in advance are corresponding, PC 10 obtains according to measuring under multiple different tachometer values
The final matching of parameter value draw moment of friction and corner, atmospheric pressure p, the relation curve of rotating speed.
Described electric machine controller 9, DC servo motor 1 and photoelectric encoder 3 form a closed-loop control system, make tested compressor
The speed of mainshaft of 4 steadily arrives, and described PC 10 uses virtual instrument software Lab VIEW to build software platform, be programmed,
Display and process.
Claims (1)
1. the conjugation of rotary compressor frictional behavior measures a system, including operational module, measurement module and control module, its
It is characterised by: described operational module includes DC servo-motor, tested compressor, torquer and source of the gas feeder, institute
State DC servo motor, tested compressor and the most coaxial concatenation of torquer and run-in synchronism, source of the gas feeder with by pressure measurement
Contracting machine connects；Described measurement module includes micro-torque sensor, photoelectric encoder and high-torque sensor, and described high-torque senses
Device is coaxially mounted between torquer and tested compressor；Described micro-torque sensor is coaxially mounted to tested compressor with straight
Between flow servo motor；Described photoelectric encoder is arranged on tested compressor near micro-torque sensor side；Described control module
Including PC, electric machine controller and load modulator, PC connects control moment generator by load modulator；PC leads to
Cross electric machine controller and connect control DC servo motor；PC is connected with source of the gas feeder, produces gas by controlling source of the gas feeder
Pressure acts on tested compressor；Micro-torque sensor, photoelectric encoder and high-torque sensor in described measurement module are respectively
It is connected with PC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620317841.XU CN205654539U (en) | 2016-04-14 | 2016-04-14 | Conjugation measurement system of rotary compressor frictional behavior |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620317841.XU CN205654539U (en) | 2016-04-14 | 2016-04-14 | Conjugation measurement system of rotary compressor frictional behavior |
Publications (1)
| Publication Number | Publication Date |
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| CN205654539U true CN205654539U (en) | 2016-10-19 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620317841.XU Withdrawn - After Issue CN205654539U (en) | 2016-04-14 | 2016-04-14 | Conjugation measurement system of rotary compressor frictional behavior |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106768663A (en) * | 2017-01-09 | 2017-05-31 | 广西大学 | A kind of dynamic observation device of compressor radial clearance leakage |
-
2016
- 2016-04-14 CN CN201620317841.XU patent/CN205654539U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106768663A (en) * | 2017-01-09 | 2017-05-31 | 广西大学 | A kind of dynamic observation device of compressor radial clearance leakage |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20161019 Effective date of abandoning: 20180112 |
|
| AV01 | Patent right actively abandoned |