CN108361197A - The double-motor driving structure and its control method of birotor class compressor - Google Patents
The double-motor driving structure and its control method of birotor class compressor Download PDFInfo
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- CN108361197A CN108361197A CN201810155793.2A CN201810155793A CN108361197A CN 108361197 A CN108361197 A CN 108361197A CN 201810155793 A CN201810155793 A CN 201810155793A CN 108361197 A CN108361197 A CN 108361197A
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- Prior art keywords
- motors
- frequency converter
- compressor
- controller
- power supply
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000000523 sample Substances 0.000 claims abstract description 19
- 230000008878 coupling Effects 0.000 claims abstract description 11
- 238000010168 coupling process Methods 0.000 claims abstract description 11
- 238000005859 coupling reaction Methods 0.000 claims abstract description 11
- 230000005611 electricity Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 9
- 238000010586 diagram Methods 0.000 description 8
- 230000008713 feedback mechanism Effects 0.000 description 4
- 239000010687 lubricating oil Substances 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/08—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by varying the rotational speed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/28—Safety arrangements; Monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Multiple Motors (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
A kind of double-motor driving structure and its control method of birotor class compressor, double-motor driving structure include two motors that two compressor drums are separately connected by shaft coupling, and two motors are connected with power supply and the two rotating ratio is controllable.Control method is divided into three kinds of control programs according to the rotating ratio control accuracy requirement of compressor drum, it is connect with power supply by frequency converter including the same power supply of two motor direct-connecteds, one of motor and two motors is connect by frequency converter with power supply respectively, frequency converter carries controller, difference between rotating ratio and setting speed ratio of the controller by analyzing two speed probes, adjust the setpoint frequency of frequency converter, the rotating speed control for realizing motor connected to frequency converter, keeps the constant rotational speed ratio of two motors.Present invention ensures that the normal operation of rotor class compressor, eliminates the synchromesh gear needed for traditional structure, the problem of leakage so as to avoid oil, structure of the invention is symmetrical, has the effects that reduce noise.
Description
Technical field
The present invention relates to Compressor Technologies, and in particular to a kind of double-motor driving structure of birotor class compressor and its control
Method processed.
Background technology
Birotor class compressor is one kind in positive displacement compressor, specifically includes double-screw type, roots-type and claw pressure
Contracting machine.Birotor class compressor due to mechanical life it is long, force suction and discharge, without vulnerable part, operating is reliable, with small vibration, makes an uproar
Sound is low, stable working, without surge phenomenon many advantages, such as and be widely used in each industrial occasions.What such compressor shared
Design feature is to exist simultaneously two shafts and two shafts are moved with certain rotating ratio.Such traditional compressor is by single
The mode of motor cooperation synchromesh gear carries out double shaft drivings, but since the synchronous gear structure of such compressor needs largely make
With lubricating oil, cause compressor when carrying out the compression of high-cleanness working medium, lubricating oil can by the gap between shaft and cylinder body into
Enter working chamber, to cause pollution, this pollution for the high cleanliness environment needed for compressor be it is unacceptable, than
Such as, when such compressor is in hydrogen fuel cell system, pollution can cause pile poisoning, to greatly reduce the pile service life
With performance.
Invention content
It is an object of the invention to the problems in for the above-mentioned prior art, provide a kind of double electricity of birotor class compressor
Machine driving structure and its control method, the driving structure eliminate the synchromesh gear needed for traditional structure, reduce compressor body
Product, saves the use of accurate shaft seal structure, without largely using lubricating oil, is not in oily pollution, ensure that compression working medium
It is pure.
To achieve the goals above, the double-motor driving structure of birotor class compressor of the present invention, including pass through shaft coupling
Two motors of two compressor drums are separately connected, two motors are connected with power supply and the two rotating ratio is controllable.
Two motors using in-line arrangement mode are arranged in the same side of two compressor drums or using fork row sides
Formula is arranged in the opposite side of two compressor drums.
Two same power supplys of motor direct-connected, the compressor drum use contact rotor.
Two motors are separately installed with speed probe, and one of motor is connect by frequency converter with power supply,
Another motor is directly connect with power supply；Frequency converter carries controller, and two speed probes are connect with controller, in controller
Equipped with setting speed ratio, setpoint frequency is equipped in frequency converter.
Two motors are separately installed with speed probe, and two motors are connect by frequency converter with power supply respectively,
Two frequency converters being connected respectively with two motors receive the control signal of the same controller, are set in the controller
Determine rotating ratio, setpoint frequency is equipped in frequency converter.
The double-motor driving structure control method of birotor class compressor of the present invention, according to the rotating ratio control of compressor drum
Required precision processed is divided into three kinds of control programs, respectively：
A. two motors are connect by shaft coupling with two compressor drums respectively, when rotating ratio control accuracy requirement not
Gao Shi：
Two same power supplys of motor direct-connected, the compressor drum use contact rotor, the control of rotating ratio by
Contact force between two motors and two compressor drums is adjusted jointly；
B. two motors are connect by shaft coupling with two compressor drums respectively, is separately installed with and turns on two motors
Fast sensor, when rotating ratio control accuracy requirement is higher：
One of motor is connect by frequency converter with power supply, another motor is directly connect with power supply, the frequency conversion
Controller is carried on device, and two speed probes are connect with controller, setting speed ratio, frequency converter are equipped in controller
In be equipped with setpoint frequency；Difference between rotating ratio and setting speed ratio of the controller by analyzing two speed probes, is adjusted
The setpoint frequency of frequency converter is saved, the rotating speed control of motor connected to frequency converter is realized, keeps the constant rotational speed ratio of two motors；
C. two motors are connect by shaft coupling with two compressor drums respectively, is separately installed with and turns on two motors
Fast sensor, when rotating ratio control accuracy requirement is very high：
Two motors are connect by frequency converter with power supply respectively, and two frequency converters receive the control letter of the same controller
Number, it is equipped with setting speed ratio in controller, setpoint frequency is equipped in frequency converter；Controller passes through two speed probes of analysis
Difference between rotating ratio and setting speed ratio adjusts the setpoint frequency of two frequency converters respectively, realizes rotating speed control, keeps two
The constant rotational speed ratio of a motor.
Compared with prior art, the present invention has following advantageous effect：Two compressor drums pass through shaft coupling respectively
Two motors are connected, is controlled by the rotating ratio to two motors, realizes the constant rotational speed ratio of compressor drum, it is ensured that
The normal operation of rotor class compressor, eliminates the synchromesh gear needed for traditional structure, the problem of leakage so as to avoid oil,
The double-motor driving structure of the present invention can also be such that the power of two motors declines, symmetrical configuration, have the effects that reduce noise.
Compared with prior art, double-motor driving structure control method of the invention, according to the rotating ratio of compressor drum
Control accuracy requirement is divided into three kinds of control programs.When rotating ratio control accuracy requirement is not high, two motor direct-connecteds are same
Power supply, the control of rotating ratio is by the contact force collective effect between two motors and two compressor drums.When rotating ratio controls
When required precision is higher, one of motor is connect by frequency converter with power supply, and frequency converter carries controller, two revolution speed sensings
Device is connect with controller, the difference between rotating ratio and setting speed ratio of the controller by analyzing two speed probes,
The setpoint frequency of frequency converter is adjusted, the rotating speed control of motor connected to frequency converter is realized, keeps the constant rotational speed of two motors
Than controlling rotating ratio using negative feedback mechanism, precision can be made to be improved, to play the contact forces for reducing by two rotors
Effect.When rotating ratio control accuracy requirement is very high, two motors are connect by frequency converter with power supply respectively, and two frequency converters connect
The control signal of the same controller is received, between rotating ratio and setting speed ratio of the controller by analyzing two speed probes
Difference, respectively adjust two frequency converters setpoint frequency, realize rotating speed control, keep two motors constant rotational speed ratio, profit
Rotating ratio is controlled with double negative feedback mechanisms, precision greatly improves, avoids the contact force effect between two rotors, improve rotor
Performance and service life.
Description of the drawings
The driving structure schematic diagram of Fig. 1 tradition birotor class compressors；
Fig. 2 present invention arranges the structural schematic diagram of two motors using in-line arrangement mode；
Fig. 3 present invention arranges the structural schematic diagram of two motors using fork row's mode；
The structural schematic diagram of Fig. 4 double-motor driving structure control programs 1 of the present invention；
The structural schematic diagram of Fig. 5 double-motor driving structure control programs 2 of the present invention；
The control logic schematic diagram of Fig. 6 double-motor driving structure control programs 2 of the present invention；
The structural schematic diagram of Fig. 7 double-motor driving structure control programs 3 of the present invention；
The control logic schematic diagram of Fig. 8 double-motor driving structure control programs 3 of the present invention；
Specific implementation mode
Present invention will be described in further detail below with reference to the accompanying drawings.
Referring to Fig. 1, the present invention can be transformed on traditional birotor class driven compressor architecture basics, in original
In beginning driving structure, motor connects some rotor, and another rotor drives by synchromesh gear, and such type of drive increases oil
Pollution.
Referring to figure 2-3, present invention employs double-motor driving structure, two motors 3 are separately connected two by shaft coupling 2
Compressor drum 1, two motors 3 using in-line arrangement modes are arranged in the same side of two compressor drums 1 or using fork row sides
Formula is arranged in the opposite side of two compressor drums 1, eliminates synchromesh gear, the problem of leakage so as to avoid oil.
Referring to Fig. 4-8, the control method of double-motor driving structure of the present invention includes the following steps：
Control program 1 can be used for the rotor speed birotor class compressor not higher than control accuracy requirement：Two electricity
The direct-connected same power supply of machine 34 without control method.At this point, the rotor design due to birotor class compressor generally uses contact
Rotor design, the contact force collective effect that the control of rotating ratio can be by between the bi-motor of driving effect and two rotors.
Control program 2 can be used for rotor speed birotor class compressor more higher than control accuracy requirement：Two motors 3
It is respectively provided with speed probe 5, a certain motor 3 connects the frequency converter 7 of a tape controller 6, and the input of controller 6 is two rotors 1
Tach signal, by two signals analyze, find out current rotating speed than with setting speed than difference, pass through the difference change become
The setpoint frequency of frequency device 7 is realized and is controlled the rotating speed of the motor 3, to realize the constant rotational speed between two motors 3 than control.
Such control method controls rotating ratio using negative feedback mechanism, and precision improves, and plays the work for reducing the contact force between two rotors
With.
Control program 3 can be used for the rotor speed birotor class compressor very higher than control accuracy requirement：Two motors 3
It is respectively provided with speed probe 5, two motors 3 are separately connected the frequency converter 7 inputted by same controller 6, and the input of controller 6 is
The tach signal of two rotors 1, by two signals analyze, find out current rotating speed than with setting speed than difference, pass through the difference
Value changes the setpoint frequency of two frequency converters 7 respectively, realizes and controls the rotating speed of two motors 3, between two motors 3 of realization
Constant rotational speed than control.Such control method controls rotating ratio using double negative feedback mechanisms, and precision greatly improves, to avoid
Contact force effect between two rotors, improves performance and the service life of rotor.
Claims (6)
1. a kind of double-motor driving structure of birotor class compressor, it is characterised in that：Including being separately connected by shaft coupling (2)
Two motors (3) of two compressor drums (1), two motors (3) are connected with power supply (4) and the two rotating ratio is controllable.
2. the double-motor driving structure of birotor class compressor according to claim 1, it is characterised in that：Two electricity
Machine (3) is arranged in the same side of two compressor drums (1) using in-line arrangement mode or is arranged in two pressures using fork row's mode
The opposite side of contracting machine rotor (1).
3. the double-motor driving structure of birotor class compressor according to claim 1, it is characterised in that：Two electricity
The direct-connected same power supply (4) of machine (3), the compressor drum (1) use contact rotor.
4. the double-motor driving structure of birotor class compressor according to claim 1, it is characterised in that：Two electricity
Machine (3) is separately installed with speed probe (5), and one of motor (3) connect by frequency converter (7) with power supply (4), another
Motor (3) is directly connect with power supply (4)；Frequency converter (7) carries controller (6), two speed probes (5) and controller (6)
It connects, setting speed ratio is equipped in controller (6), setpoint frequency is equipped in frequency converter (7).
5. the double-motor driving structure of birotor class compressor according to claim 1, it is characterised in that：Two electricity
Machine (3) is separately installed with speed probe (5), and two motors (3) connect by frequency converter (7) with power supply (4) respectively, respectively with
Two connected frequency converters (7) of two motors (3) receive the control signal of the same controller (6), in the controller (6)
Equipped with setting speed ratio, setpoint frequency is equipped in frequency converter (7).
6. a kind of double-motor driving structure control method of birotor class compressor, which is characterized in that according to compressor drum
Rotating ratio control accuracy requirement is divided into three kinds of control programs, respectively：
A. two motors (3) are connect by shaft coupling (2) with two compressor drums (1) respectively, when rotating ratio control accuracy
When of less demanding：The direct-connected same power supply (4) of two motors (3), the compressor drum (1) use contact rotor, turn
The control of speed ratio is adjusted jointly by the contact force between two motors (3) and two compressor drums (1)；
B. two motors (3) are connect by shaft coupling (2) with two compressor drums (1) respectively, on two motors (3) respectively
Speed probe (5) is installed, when rotating ratio control accuracy requirement is higher：
One of motor (3) connect by frequency converter (7) with power supply (4), another motor (3) is directly connect with power supply (4),
Controller (6) is carried on the frequency converter (7), and two speed probes (5) connect with controller (6), controller
(6) it is equipped with setting speed ratio in, setpoint frequency is equipped in frequency converter (7)；Controller (6) is by analyzing two speed probes
(5) the difference between rotating ratio and setting speed ratio, adjusts the setpoint frequency of frequency converter (7), and realization connects frequency converter (7)
The rotating speed control for connecing motor (3), keeps the constant rotational speed ratio of two motors (3)；
C. two motors (3) are connect by shaft coupling (2) with two compressor drums (1) respectively, two motors (3) are pacified respectively
Equipped with speed probe (5), when rotating ratio control accuracy requirement is very high：
Two motors (3) connect by frequency converter (7) with power supply (4) respectively, and two frequency converters (7) receive the same controller
(6) control signal is equipped with setting speed ratio in controller (6), setpoint frequency is equipped in frequency converter (7)；Controller (6) passes through
The difference between the rotating ratio and setting speed ratio of two speed probes (5) is analyzed, adjusts setting for two frequency converter (7) respectively
Determine frequency, realizes rotating speed control, keep the constant rotational speed ratio of two motors (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810155793.2A CN108361197A (en) | 2018-02-23 | 2018-02-23 | The double-motor driving structure and its control method of birotor class compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810155793.2A CN108361197A (en) | 2018-02-23 | 2018-02-23 | The double-motor driving structure and its control method of birotor class compressor |
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| Publication Number | Publication Date |
|---|---|
| CN108361197A true CN108361197A (en) | 2018-08-03 |
Family
ID=63002328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810155793.2A Pending CN108361197A (en) | 2018-02-23 | 2018-02-23 | The double-motor driving structure and its control method of birotor class compressor |
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| Country | Link |
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| CN (1) | CN108361197A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110219802A (en) * | 2019-06-27 | 2019-09-10 | 西安交通大学 | A kind of three motor-driven single screw compressors |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5295808A (en) * | 1991-03-29 | 1994-03-22 | Hitachi, Ltd. | Synchronous rotating type scroll fluid machine |
| CN101334026A (en) * | 2007-06-29 | 2008-12-31 | 上海汉钟精机股份有限公司 | Screw compressor supporting structure |
| CN106762646A (en) * | 2016-12-27 | 2017-05-31 | 北京朗禾科技有限公司 | A kind of bi-motor composite rotors Double-axis transmission equipment |
| CN206608310U (en) * | 2017-01-25 | 2017-11-03 | 奥戈恩（广州）泵业有限公司 | A kind of strong self-priming rotor pump installation |
| CN207999359U (en) * | 2018-02-23 | 2018-10-23 | 西安交通大学 | A kind of double-motor driving structure of birotor class compressor |
-
2018
- 2018-02-23 CN CN201810155793.2A patent/CN108361197A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5295808A (en) * | 1991-03-29 | 1994-03-22 | Hitachi, Ltd. | Synchronous rotating type scroll fluid machine |
| CN101334026A (en) * | 2007-06-29 | 2008-12-31 | 上海汉钟精机股份有限公司 | Screw compressor supporting structure |
| CN106762646A (en) * | 2016-12-27 | 2017-05-31 | 北京朗禾科技有限公司 | A kind of bi-motor composite rotors Double-axis transmission equipment |
| CN206608310U (en) * | 2017-01-25 | 2017-11-03 | 奥戈恩（广州）泵业有限公司 | A kind of strong self-priming rotor pump installation |
| CN207999359U (en) * | 2018-02-23 | 2018-10-23 | 西安交通大学 | A kind of double-motor driving structure of birotor class compressor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110219802A (en) * | 2019-06-27 | 2019-09-10 | 西安交通大学 | A kind of three motor-driven single screw compressors |
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Effective date of registration: 20200107 Address after: No. 55, Jiangkou street, Fenghua District, Ningbo, Zhejiang Province Applicant after: NINGBO BAOSI ENERGY EQUIPMENT Co.,Ltd. Address before: Beilin District Xianning West Road 710049, Shaanxi city of Xi'an province No. 28 Applicant before: Xi'an Jiaotong University |
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Address after: 315500 No.18 Shangqiao Road, Xiwu street, Fenghua District, Ningbo City, Zhejiang Province Applicant after: NINGBO BAOSI ENERGY EQUIPMENT Co.,Ltd. Address before: No. 55, Jiangkou street, Fenghua District, Ningbo, Zhejiang Province Applicant before: NINGBO BAOSI ENERGY EQUIPMENT Co.,Ltd. |
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Application publication date: 20180803 |