CN202756218U - Energy-saving system for multiple parallel air compressors with different power - Google Patents
Energy-saving system for multiple parallel air compressors with different power Download PDFInfo
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- CN202756218U CN202756218U CN 201220379028 CN201220379028U CN202756218U CN 202756218 U CN202756218 U CN 202756218U CN 201220379028 CN201220379028 CN 201220379028 CN 201220379028 U CN201220379028 U CN 201220379028U CN 202756218 U CN202756218 U CN 202756218U
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Abstract
The utility model discloses an energy-saving system for multiple parallel air compressors with different power. An air compressor one and an air compressor two are connected in parallel mode through a programmed logic controller (PLC). A variable frequency controller is used to control the air compressors, and a pressure sensor is arranged on a pipeline connected with the air compressors. The energy-saving system for the multiple parallel air compressors with the different power has the advantages of controlling automatically, saving energy and reducing operation cost.
Description
Technical field
The utility model relates to a kind of many different capacity air compressor parallel-connection energy-saving systems.
Background technique
The waste of air compressor energy consumption is large.The one, the waste of air compressor no-load running energy consumption.SA120A is contained in Shanghai again, and on average to be responsible for rate be 66.5%, and be 751 hours idle time, energy consumption be 120KW*40%*751 hour=36048 kilowatt hours (when air compressor is unloaded electric current be about rated current 40%).It is 56.6% that Liuzhou richness reaches the air compressor load factor, remains unit no-load running in 2402 hours, energy consumption be 55KW*40%*2402 hour=52844 kilowatt hours (when air compressor is unloaded electric current be about rated current 40%).The 2nd, energy consumption waste during the air compressor unloading.The every raising of air compressor exhaust pressure 1bar needs 7% energy consumption acting.Air compressor when unloading need to drop to 4bar to internal pressure from 8bar, originally paid the pressurized air that energy consumption produces and be discharged into suction valve, wastes.
Frequently add unloading.Air compressor is whenever finished and is once added uninstall process, and the components and parts such as the suction valve in the system, solenoid valve, atmospheric valve, controller, motor bearings are course of action once all, adds frequently unloading and can shorten above-mentioned components and parts working life, has increased maintenance expenses.
When air compressor starts electrical network is impacted large.Air compressor all is the star triangle start, and electric current is excessive during startup, and electrical network is impacted greatly, causes voltage functuation.
The rear end pressure surge is large.When supply gas pressure is on the low side, can not satisfy technological requirement; When supply gas pressure was higher, power consumption was high; But certainly will want supply gas pressure higher for satisfying technological requirement, thereby cause the air feed cost high, energy consumption is high.
The operation noise is large.The noise of air compressor mainly comes from main frame and cooling blower, and during the unit oepration at full load, main frame has very large noise.Temperature is high, and cooling fan needs long-time running, and noise is large.
The air compressor of two different capacities disperses placement, needs to drop into a large amount of manually going and manages, safeguards, maintains.System exhaust pressure is too high, and caliber does not reach compressed-air actuated flow velocity requirement, causes pressure-drop in pipeline higher, and the energy consumption waste is large.
The model utility content
The technical problems to be solved in the utility model provides a kind of energy-conservation, many different capacity air compressor parallel-connection energy-saving systems reducing operating cost.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: many different capacity air compressor parallel-connection energy-saving systems, comprise air compressor 1, and air compressor 2, controller, described air compressor 1 and air compressor 2 are in parallel by PLC.
Described controller is frequency-variable controller.
Described PLC is Siemens S7-200.
The pipeline that is connected with described air compressor 1 is provided with pressure transducer.
The pipeline that is connected with described air compressor 2 is provided with pressure transducer.
The beneficial effects of the utility model are:
One, Frequency Conversion Modification benefit
1, energy saving.Compare the energy saving successful through the pneumatics unit of improved Frequency Converter Control and the air compressor of traditional controller control.According to the rear end demand, the economical operation under the control of PLC of pneumatics unit.By the multistage pressure sensor, gather compressor operation pressure, feed back signal to frequency variator, under the control of PLC, regulate rotating speed and the output power of air compressor, form a closed loop feedback system, automatically regulate according to actual needs the air compressor air demand, and keep the relatively constant of pressure, to reach energy-conservation purpose.
2, operating cost reduces.The operating cost of tradition air compressor forms by three: initial purchase cost, maintenance cost and energy cost.Wherein 77% of the about duty press of energy cost operating cost.Reduce energy cost after the system optimization, add that the impact to equipment reduces behind the varying frequency starting, the maintenance amount is also followed reduction, so operating cost will reduce greatly.Energy consumption analysis sees Table 1
Table 1, energy consumption analysis table
3, improve pressure controling precision.Frequency-changing control system has accurate pressure control ability.The tolerance that air pressure is exported and user's air system is required of air compressor is complementary.The output tolerance of VFC air compressor changes along with the change of motor speed.Because the precision of VFC motor speed improves, so it can make the system pressure variation of pipe network remain on the 3pisg excursion, namely in the 0.2bar scope, effectively improved the quality of operating mode.
4, prolong the working life of air compressor.Frequency variator is from 0 hertz of starting air compressor, and its starting time for acceleration can be adjusted, thereby the impact that when reducing starting electric component and the mechanical part of air compressor is caused strengthens the reliability of system, and prolonged the working life of air compressor.
5, reduced the noise of air compressor.According to the working condition requirement of air compressor, behind the freguency control reform, motor rotation speed obviously slows down, the noise when therefore effectively having fallen compressor operation.Expert data shows, noise and original system relatively descend approximately 3 to 7 decibels.
When 6, reduce starting to the impact of electrical network.Current fluctuation when VFC can reduce startup of unit, this fluctuating current can affect the electricity consumption of electrical network and miscellaneous equipment, and frequency variator can be effectively be reduced to a minimum the peak value of starting current.
Two, practical function after remote interlocking operation control is transformed
1, realizes telecontrol.Touch the key data of screen display pneumatics unit.Running state is shown to corresponding hurdle with the result who analyzes.The user can send corresponding control command to air compressor controller according to the demonstration remote data, thereby has realized the telecontrol of compressor operation.The slave parameter that the user goes back utilisation system to be provided is checked the air compressor interface is set, and can consult very easily and revise each air compressor machine Operational Limits.
2, realize having holidays by turns control, online control.Network operation state: have at least a lower-position unit to be in running state in the on-line network.
3, realize the data storage.The data that the computer network program of supervisory control system can be come collection store in the computer with the form of database, for user or attendant's later reference.System adopts the ACCESS database, and the fate that data are preserved is set in systematic parameter by the user.For preventing the inadequate of user disk space, surpass the data of setting fate, system will delete automatically.Database is report generation, imports and exports data data source is provided.
4, realize System right management.For preventing that the unauthorized personnel from arranging and revising systematic parameter and lower-position unit parameter, program needs the authentication of users password when the user arranges systematic parameter and lower-position unit parameter.Provide user cipher to revise menu in the System menu, user thus menu enters modification interface password, real time modifying password.Rear user cipher is installed for the first time for empty by system.User cipher please is set immediately.
5, realize on the spot control.Unit can be controlled equally on the spot, need only reset this locality in the air compressor man-machine interface, need not change circuit.
6, realize worker's frequency conversion conversion.If frequency conversion system breaks down, but manually-operable recovers the original power frequency operation operation of air compressor, keeps air feed uninterrupted.
Description of drawings
Accompanying drawing is the skeleton diagram of many different capacity air compressors of the utility model parallel-connection energy-saving system.
Embodiment
Air compressor 1(55KW) start-up course (manually)
With panel hand/from switching over to manual state;
2. manually relay adhesive (tutorial light is bright);
3. press start key (manually boot the adhesive of relay crawl, tutorial light is bright to be knocked out afterwards) once;
4. wait for the A.C. contactor adhesive of air compressor after about 12 seconds, feed back to A.C. contactor relay adhesive (A.C. contactor feedback signal tutorial light Chang Liang);
5. after the air compressor valve signal is come, air compressor valve signal relay adhesive (tutorial light is bright);
6.2 frequency variator telecontrol relay adhesive (tutorial light is bright) after second, frequency variator brings into operation;
7.6 PLC control air compressor valve energising relay adhesive (tutorial light is bright) after second, inlet open, air compressor 1 with compressed air delivery to gas holder.When the pressure of gas holder is bigger than normal, opens and unload air valve, thereby be the gas holder step-down.
Air compressor 2(120KW) start-up course (manually) and air compressor 1(55KW) start-up course (manually) identical.
Automatically operation.With panel hand/get final product to auto state from switching over.
Under auto state, which platform air compressor no matter put into operation, once pressure is lower than 0.45MPA(4.5KG) pressure, system all will drop into an other air compressor that does not have operation automatically, for example: under auto state, the air compressor of 55KW is in normal operation, pressure can descend when breaking down, in case and pressure is when breaking 0.45Mpa by a fall, system can cut off the operation of 55KW air compressor automatically, can automatically start simultaneously the air compressor of 120KW, after the 120KW air compressor started, pressure can begin to rise, and system can count according to the valve signal of 120KW air compressor, system can stop the operation of 120KW air compressor automatically when 120KW air compressor valve signal surpasses 8 times, can start the 55KW air compressor simultaneously, still can't normally move if this process is kept 3 55KW air compressors, system will stop the startup of 55KW air compressor, quote simultaneously 55KW air compressor indicating fault, until the maintenance man drops into the compressor operation that needs after handling fault again.
Claims (5)
1. many different capacity air compressor parallel-connection energy-saving systems comprise air compressor 1, air compressor 2, and controller is characterized in that: described air compressor 1 and air compressor 2 are in parallel by PLC.
2. many different capacity air compressor parallel-connection energy-saving systems according to claim 1, it is characterized in that: described controller is frequency-variable controller.
3. many different capacity air compressor parallel-connection energy-saving systems according to claim 1, it is characterized in that: described PLC is Siemens S7-200.
4. according to claim 1,2 or 3 described many different capacity air compressor parallel-connection energy-saving systems, it is characterized in that: the pipeline that is connected with described air compressor 1 is provided with pressure transducer.
5. according to claim 1,2 or 3 described many different capacity air compressor parallel-connection energy-saving systems, it is characterized in that: the pipeline that is connected with described air compressor 2 is provided with pressure transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220379028 CN202756218U (en) | 2012-08-02 | 2012-08-02 | Energy-saving system for multiple parallel air compressors with different power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220379028 CN202756218U (en) | 2012-08-02 | 2012-08-02 | Energy-saving system for multiple parallel air compressors with different power |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202756218U true CN202756218U (en) | 2013-02-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220379028 Expired - Fee Related CN202756218U (en) | 2012-08-02 | 2012-08-02 | Energy-saving system for multiple parallel air compressors with different power |
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| CN (1) | CN202756218U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103727012A (en) * | 2013-12-04 | 2014-04-16 | 山东金阳矿业集团有限公司 | Air compressor with linkage operation controlled |
-
2012
- 2012-08-02 CN CN 201220379028 patent/CN202756218U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103727012A (en) * | 2013-12-04 | 2014-04-16 | 山东金阳矿业集团有限公司 | Air compressor with linkage operation controlled |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130227 Termination date: 20140802 |
|
| EXPY | Termination of patent right or utility model |