CN202326248U - Double-drive spindle control system for oil-free dry vacuum pump - Google Patents
Double-drive spindle control system for oil-free dry vacuum pump Download PDFInfo
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- CN202326248U CN202326248U CN2011204440568U CN201120444056U CN202326248U CN 202326248 U CN202326248 U CN 202326248U CN 2011204440568 U CN2011204440568 U CN 2011204440568U CN 201120444056 U CN201120444056 U CN 201120444056U CN 202326248 U CN202326248 U CN 202326248U
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- vacuum pump
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- dry vacuum
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Abstract
The utility model discloses a double-drive spindle control system for an oil-free dry vacuum pump. The double-drive spindle control system comprises a double-shaft oil-free vacuum pump machinery part and is provided with a motor control part, wherein a motor, a positioning gear and a coder are arranged on each shaft of the double-shaft oil-free vacuum pump; and the control part comprises alternating current (AC) frequency converters, a man-machine interface and a central processing unit (CPU). Due to accurate control of the control system, double spindles of the oil-free dry vacuum pump rotate to keep position synchronization; meanwhile, the rotating speed, running torque, instantaneous power, faults and other information of the running dry vacuum pump are displayed in real time. Compared with the traditional dry vacuum pump control system, the double-drive spindle control system can reduce the machining precision between the original gear and a shaft seal, save lubricating oil to reduce the production cost, and at least double the general service life.
Description
Technical field
The utility model relates to oil-free vacuum and obtains the field, specifically a kind of two drive main spindle control system of oil-free dry vacuum pump that are used for.
Background technique
It is driving shaft that an axle is all adopted in the driving of twin shaft oil-free vacuum pump at present, and another root is a driven shaft.Two velocity ratios of installation are driving gears of 1: 1 between driving shaft and the driven shaft; An AC asynchronous motor only is installed on driving shaft, and another root axle leans on gear transmission, causes the oil-free vacuum pump operating noise big; Gear mill differential loss consumption is big, directly influences the life-span of oil-free vacuum pump.Driving gear requires to have high machining accuracy and gear lubricant in addition, makes cost increasing Gear Processing difficulty and gear lubricant cost all be difficult to control, and then influences the raising of pump overall price/performance ratio.
Along with the electron trade develop rapidly, the electronic unit price constantly descends, and motor frequency change control is used increasingly extensive and technological increasingly mature, for the driving of developing the twin shaft oil-free vacuum pump provides strong external condition.
The oil-free dry vacuum pump does not have oil because of it is clean; Advantages such as maintenance period is long have extraordinary application prospect in various fields; As be used for food, field of medicaments to improve the safe and sanitary standard, be used for photovoltaic and semiconductor chip manufacturing industry to improve photoelectric transformation efficiency and to enhance product performance.
Summary of the invention
To the technical problem of above-mentioned existence, the utility model provides a kind of two drive main spindle control system of oil-free dry vacuum pump that are used for, and a cover is that core adds the control system that two frequency variators are formed with CPU, realizes oil-free dry vacuum pump intelligent management and control.
For realizing the object of the invention, the technological scheme of the utility model is following:
A kind of two drive main spindle control system of oil-free dry vacuum pump that are used for, it comprises twin shaft oil-free dry vacuum pump mechanical part, it is characterized in that: also set up the motor control part; Wherein, On each root axle of twin shaft oil-free dry vacuum pump motor, Positioning Gear and encoder are housed respectively; The motor control part is through being installed in the encoder on the motor reel; With gathering the input end that the output pulse data signal is connected to AC converter and CPU element simultaneously, realize the closed loop control of motor speed.
Said motor control part branch comprises the 1st, 2 AC converters, man-machine interface and CPU element; The input end of motor is connected with the 1st, 2 AC converter output terminals respectively on each root axle; Its signal output part connects each AC converter signal receiving end respectively; Said each encoder output pulse data signal is joined with corresponding the 1st, 2 AC converters; Connect the input end of CPU element simultaneously, as motor speed and position feedback; CPU element one road output control terminal is connected to the 1st, 2 AC converter input ends respectively; Accomplish setting of AC converter parameter and start and stop control; Another road output end position difference signal is connected to the 2nd AC converter input end as synchronization regulation, and CPU element is connected with man-machine interface.
Said encoder adopts incremental encoder.
Said motor can adopt three-phase AC asynchronous motor or servomotor or permanent magnet synchronous motor.
CPU element also comprises communication module, can adopt 485 communication modules or expansion module PROFIBUS-DP or CANopen or DeviceNet, can realize above-mentioned motor this locality and telecontrol.
A kind of two drive main spindle control system of oil-free dry vacuum pump that are used for, it comprises twin shaft oil-free dry vacuum pump mechanical part, it is characterized in that also setting up the motor control part; Wherein, on each root axle of twin shaft oil-free dry vacuum pump motor and two encoders are housed respectively; The motor control part with gathering the input end that the output pulse data signal is connected to corresponding the 1st, 2 AC converters and CPU element respectively, realizes the closed loop control of motor speed through being installed in two encoders on the motor reel.
Said control section comprises the 1st, 2 AC converters, man-machine interface and CPU element; The input end of motor is connected with the 1st, 2 AC converter output terminals respectively on each root axle; Its output signal end connects the signal receiving end of each AC converter respectively; The corresponding respectively input end that is connected to the 1st, 2 AC converters and CPU element of said each encoder output pulse data signal is as speed and position feedback; CPU element one road output control terminal is connected to the 1st, 2 AC converter input ends respectively as converter parameter setting and start and stop control; Another road output end position difference signal is connected to the 2nd AC converter input end as synchronization regulation, and CPU element is connected with man-machine interface.
Each root axle of said vacuum pump also can be equipped with Positioning Gear respectively.
Two encoders on each root axle of said vacuum pump adopt incremental encoder and absolute value encoder respectively.
The utility model compared with prior art has following beneficial effect:
1. the utility model is owing to be installed in two position synchronous Positioning Gears on the twin shaft; And electronic moving, AC converter, encoder component and the accurate control through control section; Make the two spindle operation holding positions of oil-free dry vacuum pump synchronous, the rotating speed when accomplishing the dry vacuum pump running simultaneously, running torque, instantaneous power, fault etc. show in real time.
2. native system is not owing to be to adopt direct geared to transmit power torque, and noise obviously reduces by the 10～15dB (A) that descends when making pump housing work, and is particularly evident for high-power oil-less pump system.Noise objective is one of important technology of oil-less pump, so reduce noise the performance of oil-less pump is had bigger contribution.
3. owing to adopt Frequency Converter Control to regulate, increased the rotating speed of motor, and then made the ultimate vacuum index of oil-less pump system improve 1～2 one magnitude.
4. be respectively equipped with motoring through two main shafts, changed the gear transmission mode, become the position by the moment carrying and transmit, reduced the geared machine loss, improved machine life, reduce production costs simultaneously.
5. owing to increased, can realize this locality and telecontrol, improve automaticity control of pumping system parameter and adjusting.
6. on the every axle of the utility model another program system two encoders can be housed, and can remove Positioning Gear, make the system positioin control accuracy higher, further reduce production costs.
Description of drawings
Fig. 1 is first kind of control system structural representation of the utility model.
Fig. 2 is second kind of control system structural representation of the utility model.
Fig. 3 is Fig. 2 control system example structure schematic representation.
Fig. 4 is the utility model control system circuit theory diagrams.
Embodiment
Below in conjunction with accompanying drawing and mode of execution the utility model scheme is done further explain.
Like Fig. 1, shown in 4, be the utility model first kind of control system scenario-frame schematic representation and circuit theory diagrams.Be first kind of control system structural representation of the present invention and circuit theory diagrams.1. one kind is used for the two drive main spindle control system of oil-free dry vacuum pump, and it comprises twin shaft oil-free dry vacuum pump mechanical part, it is characterized in that: also set up the motor control part; Wherein, On each root axle 1,2 of twin shaft oil-free dry vacuum pump P motor, Positioning Gear and encoder are housed respectively; The motor control part is through being installed in the encoder on the motor reel; With gathering the input end that the output pulse data signal is connected to AC converter and CPU element simultaneously, realize the closed loop control of motor speed.
Said motor control part branch comprises the 1st, 2 AC converters, man-machine interface and CPU element; The input end of motor is connected with the 1st, 2 AC converter output terminals respectively on each root axle; Its signal output part connects each AC converter signal receiving end respectively; Said each encoder output pulse data signal is joined with corresponding the 1st, 2 AC converters; Connect the input end of CPU element simultaneously, as motor speed and position feedback; CPU element one road output control terminal is connected to the 1st, 2 AC converter input ends respectively; Accomplish setting of AC converter parameter and start and stop control; Another road output end position difference signal is connected to the 2nd AC converter input end as synchronization regulation, and CPU element is connected with man-machine interface.
Said encoder adopts incremental encoder.
Said motor adopts three-phase AC asynchronous motor or servomotor or permanent magnet synchronous motor.
The telecommunication module that also comprises CPU element can adopt 485 communication modules or expansion module PROFIBUS-DP or CANopen or DeviceNet, can realize above-mentioned motor this locality and telecontrol.
It is that core adds the control system that two AC converters are formed with CPU that the utility model provides a cover, realizes oil-free dry vacuum pump intelligent management and control.
CPU element links to each other with man-machine interface and accomplishes the setting to the twin shaft Operational Limits, shows that in real time two electronic engine torque change the service data of position synchronous state and working speed.Two AC converters are accomplished double motor frequency conversion and driving, through being installed in the encoder on the motor reel, will gathering output data and be connected to AC converter as feedback speed signal, realize the closed loop control of motor speed.
Positioning Gear G1 between twin shaft, G2 still keeps, and effect is carried by moment of torsion and is become the position information transmission.Its main purpose has 2 points, and the one, the initial position of completion twin shaft when the pump housing is installed; The 2nd, avoid accident to cause the pump housing to damage, play the effect of the protection pump housing.
Like Fig. 1, shown in 4; In the present embodiment; The 1st, 2 motor M1, M2 adopted three-phase AC asynchronous motor during twin shaft oil-free dry vacuum pump partly comprised, it is sensor that the 1st, 2 encoders that are equipped with respectively on this pump diaxon all adopt incremental encoder, adopted model C AS416; 1st, 2 AC converters adopt model C MR-VB4A0011BA; CPU element comprises CPU processor, power supply module and communication module, and wherein communication module is connected with port RX2, the TX2 of CPU processor, and port RX1, the TX1 of CPU processor are connected with man-machine interface, adopts chip C8051F040; Power module adopts AMS1117.
This system works working principle and process: 1st, the rotor of 2 three-phase AC asynchronous motors links to each other with two rotating shafts of twin shaft oil-free dry vacuum pump P; Drive two axle rotations of twin shaft oil-free vacuum pump P during this two motor rotation; 1st, 2 encoders are connected with motor main shaft; 1st, 2 motor M1, M2 are operated under the master slave mode, and promptly the 2nd motor M2 and the 1st motor M1 keep relation of following up.When control system was worked, through the 1st, 2 motor M1, corresponding with it speed and the position output signal of M2 rotation the 1st, 2 encoders generation simultaneously, control system was gathered this output signal; As the 1st, 2 motor M1, when speed or positional deviation appear in M2, the CPU processor is regulated the 2nd motor M2 speed or position, makes it to keep synchronously with the 1st motor M1.The rotating speed of motor, torque, power parameter show that through man-machine interface these parameters also can be carried out remote monitoring through communication module.
A kind of two drive main spindle control system of oil-free dry vacuum pump that are used for, it comprises twin shaft oil-free dry vacuum pump mechanical part, it is characterized in that also setting up the motor control part; Wherein, on each root axle 1,2 of twin shaft oil-free dry vacuum pump P motor and two encoders are housed respectively; The motor control part with gathering the input end that the output pulse data signal is connected to corresponding the 1st, 2 AC converters and CPU element respectively, realizes the closed loop control of motor speed through being installed in two encoders on the motor reel.
Said control section comprises the 1st, 2 AC converters, man-machine interface and CPU element; The input end of motor is connected with the 1st, 2 AC converter output terminals respectively on each root axle; Its output signal end connects the signal receiving end of each AC converter respectively; The corresponding respectively input end that is connected to the 1st, 2 AC converters and CPU element of said each encoder output pulse data signal is as speed and position feedback; CPU element one road output control terminal is connected to the 1st, 2 AC converter input ends respectively as converter parameter setting and start and stop control; Another road output end position difference signal is connected to the 2nd AC converter input end as synchronization regulation, and CPU element is connected with man-machine interface.
Two encoders on each root axle 1,2 of said vacuum pump P adopt incremental encoder and absolute value encoder respectively.
As shown in Figure 2, be the another kind of control system structural representation of the present invention.With the main distinction of first kind of scheme be: on each root axle of twin shaft oil-free dry vacuum pump P, motor is housed respectively and two encoders do not contain Positioning Gear.
In conjunction with accompanying drawing 2 its structure is further described: 1st, the rotor of 2 Wechselstrommotors links to each other with two rotating shafts 1,2 of twin shaft oil-free dry vacuum pump P respectively; When rotating, electronic motivation drives two axles rotations of twin shaft oil-free vacuum pump P; The 1st～4 encoder is connected with the 1st, 2 motor main shafts respectively, and the 1st, 3 encoders adopt incremental encoder, and the 2nd, 4 adopt absolute value encoder; Incremental encoder is as feedback speed signal, and absolute value encoder is as position feed back signal.Feedback speed signal and AC converter are formed speed closed loop and are regulated position feed back signal and the adjusting of CPU element composition position closed loop; Motor M1, M2 are operated under the master slave mode, and promptly the 2nd motor M2 and the 1st motor M1 keep relation of following up.
This system work process: when control system is worked, produce corresponding with it speed and position output signal respectively through the 1st, 2 motor M1, M2 rotation while the 1st～4 encoder, control system is gathered this output signal; As the 1st, 2 motor M1, when speed or positional deviation appear in M2, CPU element is regulated the 2nd motor M2 speed or position, makes it to keep synchronously with the 1st motor M1.Rotating speed of motor, torque, power parameter shows that through man-machine interface these parameters also can be carried out remote monitoring through communication module.
In addition, on each root axle of vacuum pump P, Positioning Gear G1, G2 can also be housed respectively.
As shown in Figure 3, be second kind of control system example structure schematic representation.In Fig. 2, on the basis of scheme, also can increase respectively on each root axle Positioning Gear G1, G2 are housed; Reason is: when control system occur unusual or two main shaft moments serious when unbalanced Positioning Gear G1, G2 vacuum pump is played a protective role.
Claims (9)
1. one kind is used for the two drive main spindle control system of oil-free dry vacuum pump, and it comprises twin shaft oil-free dry vacuum pump mechanical part, it is characterized in that: also set up the motor control part; Wherein, On each root axle (1,2) of twin shaft oil-free dry vacuum pump (P) motor, Positioning Gear and encoder are housed respectively; The motor control part is through being installed in the encoder on the motor reel; With gathering the input end that the output pulse data signal is connected to AC converter and CPU element simultaneously, realize the closed loop control of motor speed.
2. by the described a kind of two drive main spindle control system of oil-free dry vacuum pump that are used for of claim 1, it is characterized in that: said motor control part branch comprises the 1st, 2 AC converters, man-machine interface and CPU element; The input end of motor is connected with the 1st, 2 AC converter output terminals respectively on each root axle; Its signal output part connects each AC converter signal receiving end respectively; Said each encoder output pulse data signal is joined with corresponding the 1st, 2 AC converters; Connect the input end of CPU element simultaneously, as motor speed and position feedback; CPU element one road output control terminal is connected to the 1st, 2 AC converter input ends respectively; Accomplish setting of AC converter parameter and start and stop control; Another road output end position difference signal is connected to the 2nd AC converter input end as synchronization regulation, and CPU element is connected with man-machine interface.
3. by claim 1 or 2 described a kind of two drive main spindle control system of oil-free dry vacuum pump that are used for, it is characterized in that: said encoder adopts incremental encoder.
4. by claim 1 or 2 described a kind of two drive main spindle control system of oil-free dry vacuum pump that are used for, it is characterized in that: said motor can adopt three-phase AC asynchronous motor or servomotor or permanent magnet synchronous motor.
5. by the described a kind of two drive main spindle control system of oil-free dry vacuum pump that are used for of claim 1; It is characterized in that: CPU element also comprises communication module; 485 communication modules or expansion module PROFIBUS-DP or CANopen or DeviceNet can be adopted, above-mentioned motor this locality and telecontrol can be realized.
6. one kind is used for the two drive main spindle control system of oil-free dry vacuum pump, and it comprises twin shaft oil-free dry vacuum pump mechanical part, it is characterized in that also setting up the motor control part; Wherein, on each root axle (1,2) of twin shaft oil-free dry vacuum pump (P) motor and two encoders are housed respectively; The motor control part with gathering the input end that the output pulse data signal is connected to corresponding the 1st, 2 AC converters and CPU element respectively, realizes the closed loop control of motor speed through being installed in two encoders on the motor reel.
7. by the described a kind of two drive main spindle control system of oil-free dry vacuum pump that are used for of claim 6, it is characterized in that: said control section comprises the 1st, 2 AC converters, man-machine interface and CPU element; The input end of motor is connected with the 1st, 2 AC converter output terminals respectively on each root axle; Its output signal end connects the signal receiving end of each AC converter respectively; The corresponding respectively input end that is connected to the 1st, 2 AC converters and CPU element of said each encoder output pulse data signal is as speed and position feedback; CPU element one road output control terminal is connected to the 1st, 2 AC converter input ends respectively as converter parameter setting and start and stop control; Another road output end position difference signal is connected to the 2nd AC converter input end as synchronization regulation, and CPU element is connected with man-machine interface.
8. by the described a kind of two drive main spindle control system of oil-free dry vacuum pump that are used for of claim 6, it is characterized in that: each root axle (1,2) of said vacuum pump (P) also can be equipped with Positioning Gear respectively.
9. by claim 6 or 7 described a kind of two drive main spindle control system of oil-free dry vacuum pump that are used for, it is characterized in that: two encoders on each root axle (1,2) of said vacuum pump (P), adopt incremental encoder and absolute value encoder respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204440568U CN202326248U (en) | 2011-11-11 | 2011-11-11 | Double-drive spindle control system for oil-free dry vacuum pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204440568U CN202326248U (en) | 2011-11-11 | 2011-11-11 | Double-drive spindle control system for oil-free dry vacuum pump |
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| Publication Number | Publication Date |
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| CN202326248U true CN202326248U (en) | 2012-07-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204440568U Withdrawn - After Issue CN202326248U (en) | 2011-11-11 | 2011-11-11 | Double-drive spindle control system for oil-free dry vacuum pump |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103104493A (en) * | 2011-11-11 | 2013-05-15 | 中国科学院沈阳科学仪器研制中心有限公司 | Oil-free dry vacuum pump double-driving main shaft control system |
-
2011
- 2011-11-11 CN CN2011204440568U patent/CN202326248U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103104493A (en) * | 2011-11-11 | 2013-05-15 | 中国科学院沈阳科学仪器研制中心有限公司 | Oil-free dry vacuum pump double-driving main shaft control system |
| CN103104493B (en) * | 2011-11-11 | 2015-12-09 | 中国科学院沈阳科学仪器股份有限公司 | A kind of for oil-free dry vacuum pump Dual Drive spindle control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CAS SHENYANG SCIENTIFIC INSTRUMENT CO., LTD. Free format text: FORMER NAME: SHENYANG SCIENTIFIC INSTRUMENT RESEARCH + MFG. CENTER CO., LTD., C.A.S |
|
| CP01 | Change in the name or title of a patent holder |
Address after: Xinyuan street Shenyang Hunnan New District of 110168 cities in Liaoning province. Patentee after: Shenyang Scientific Apparatus Co., Ltd. of Chinese Academy of Sciences Address before: Xinyuan street Shenyang Hunnan New District of 110168 cities in Liaoning province. Patentee before: Shenyang Scientific Instrument Research & Mfg. Center Co., Ltd., C.A.S |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20120711 Effective date of abandoning: 20151209 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |