CN102889201A - Active control system of air compressor - Google Patents
Active control system of air compressor Download PDFInfo
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- CN102889201A CN102889201A CN201210034264XA CN201210034264A CN102889201A CN 102889201 A CN102889201 A CN 102889201A CN 201210034264X A CN201210034264X A CN 201210034264XA CN 201210034264 A CN201210034264 A CN 201210034264A CN 102889201 A CN102889201 A CN 102889201A
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Abstract
The invention relates to an active control system of an air compressor, which comprises a compressor unit and an air storage unit which are communicated by a pipeline, and a control unit connected with the air storage unit. The invention uses the control unit to detect the relationship between the pressure change in the air storage unit and the time to calculate the proportional relationship between the dynamic air consumption of the system and the total capacity of the system pipeline, and judges the consumption mode of the gas pressure in the air storage unit at present, thereby actively and previously switching the compressor unit to be in a load operation state, a no-load operation state or a stop operation state, so that the gas pressure of the air storage unit can be prevented from being reduced to be lower than the lowest working pressure of the air storage unit, and the aim of preventing the adverse effect on the equipment and the process at the use end is achieved.
Description
Technical field
The invention relates to the active control system of a kind of air compressor, espespecially a kind of control unit that utilizes is controlled a compressor unit, drops to the active control system of the air compressor that is lower than its Minimum operating pressure with the exhaust pressure of avoiding a gas storage unit.
Background technique
Air compressor is a kind of in order to the pneumatic power equipment of pressurized gas to be provided, and is widely used in various the utilization on the manufacturing mechanism of air pressure as power resources.Now under the trend that automation is produced fast, the demand of pneumatic power grows with each passing day so that the significance of air compressor also with raising.
The air compressor of prior art mainly is to utilize a compressor body to import ambient atmos, with its boil down to pressurized gas and be stored in the gas storage unit, this gas storage unit joins with a using end equipment again, and then provides this using end equipment required pneumatic power.Wherein, when this using end equipment uses pressurized gas in the gas storage unit in a large number; this compressor body is to be a load operation state; and when this using end equipment is stopped using pressurized gas in the gas storage unit; this compressor body then is a no-load running state; and when the time that compressor body presents the no-load running state surpassed one section Preset Time, this compressor body also can further switch to outage state, to avoid meaningless power consumption.
Referring to shown in Figure 5, it is labeled with goal-selling pressure (the PU) (kg/cm of gas storage unit
2) and Minimum operating pressure (the PL) (kg/cm of gas storage unit
2), the control mode of the air compressor of prior art is after the gas storage cell pressure drops to Minimum operating pressure PL, just this compressor body is switched to the load operation state, yet, compressor body from after the load operation to really to the gas storage unit input pressurized gas, can postpone a bit of time, as shown in the figure, during this period of time, gas storage cell pressure can still can extremely more be lower than the Minimum operating pressure value PL that sets by continuous decrease.Thus, the phenomenon that causes possibly using end equipment to shut down because of the underpressure abnormal produces great harmful effect to integral device, technique.The main cause that problem can occur the control mode of above-mentioned prior art is because compressor body just begins reaction afterwards what the gas storage cell pressure was reduced to minimum point, edge this, the control mode of the air compressor of prior art is real to have it to treat further to improve part.
Summary of the invention
Because the shortcoming of aforementioned prior art; the invention provides the active control system of a kind of air compressor; wish just to transfer the load operation state to when the gas pressure of air compressor in the gas storage unit of invention solution prior art drops to the Minimum operating pressure value that sets thus or restart; so that the gas pressure continuous decrease in the gas storage unit, the shortcoming that causes using end equipment to shut down because of the underpressure abnormal.
In order to reach above-mentioned goal of the invention, the technological means that the present invention utilizes is that the active control system of an air compressor is comprised:
One compressor unit;
One gas storage unit, it is connected with this compressor unit with pipeline;
One control unit, it has a computing module and a logic module, this computing module is according to the gas pressure change in the gas storage unit of detecting gained and the relation of time, calculate a system pipeline total capacity, one system's dynamic air consumption, and the proportionate relationship of this system's dynamic air consumption and system pipeline total capacity, this logic module is judged the consumption patterns of the pressurized gas in this gas storage unit according to the proportionate relationship of this system's dynamic air consumption and system pipeline total capacity, and to set this compressor unit according to this consumption patterns be the load operation state, no-load running state or the state that shuts down.
The formula of said system pipeline total capacity can be:
Q＝C×(T1-T0)；
Wherein, Q is the system pipeline total capacity, and C is the unit capacity of compressor unit 10, and T0 is for starting the time of this compressor unit, and T1 is that pressure rise in the gas storage unit is to time of goal-selling force value.
The formula of said system dynamic air consumption can be:
DF＝Td×Q；
Wherein, DF is system's dynamic air consumption, and Td is that the pressure of this compressor unit changes institute elapsed time interval.
In the active control system of above-mentioned air compressor:
When DF 〉=Q even DF＞1.2Q, can make control unit propose caution and start this compressor unit is the full load operating condition;
When 0.7Q＜DF＜Q, can make control unit set this compressor unit is the load operation state;
When 0.5Q＜DF＜0.7Q, can make control unit set this compressor unit and keep the no-load running state;
When 0.2Q＜DF＜0.5Q, can make control unit set this compressor unit and keep no-load running state or carry out the load shedding running;
When DF＜0.2Q, can make control unit set this compressor unit and shut down.
The invention has the advantages that, by utilizing control unit detecting gas storage unit internal pressure variation and the relation of time, and the mode of the proportionate relationship of computing system dynamic air consumption and system pipeline total capacity, judge the consumption patterns of the gas pressure in present this gas storage unit, thereby initiatively and switch in advance the operation mode of this compressor unit, avoid the gas pressure of gas storage unit to drop to and be lower than its Minimum operating pressure, effectively reach prevention using end equipment and technique are produced dysgenic purpose.
Description of drawings
Fig. 1 is control flow chart of the present invention;
Fig. 2 be the present invention when compressor unit starts, the gas pressure change schematic diagram in the gas storage unit;
Fig. 3 is the present invention when running, the gas pressure change schematic diagram in the gas storage unit;
Fig. 4 is the schematic diagram that the present invention judges the gas pressure consumption patterns in the gas storage unit;
Fig. 5 is the gas pressure change schematic diagram in the gas storage unit of prior art.
Description of reference numerals: 10-compressor unit; 20-gas storage unit; 21-gas pressure signal; The 30-control unit; The 31-computing module; The 32-logic module; 33-controls signal.
Embodiment
Referring to shown in Figure 1, the active control system of air compressor of the present invention comprises a compressor unit 10, a gas storage unit 20 and a control unit 30:
This gas storage unit 20 is connected with this compressor unit 10 with a pipeline, the pressurized gas that above-mentioned compressor unit 10 is exported are stored in this gas storage unit 20 via pipeline, gas storage unit 20 is connected to a using end equipment 40 with another pipeline, make this gas storage unit 20 can provide this using end equipment 40 required pneumatic power, this gas storage unit 20 has sent gas pressure signal 21 in addition;
This control unit 30 connects this gas storage unit 20; this control unit 30 can receive gas pressure signal 21 and the record institute elapsed time that is sent by this gas storage unit 20; and have a computing module 31 and a logic module 32; this computing module 31 is according to the gas pressure change in the gas storage unit 20 and the relation of time; calculate a system pipeline total capacity Q; the one dynamic air consumption DF of system; and the proportionate relationship of the dynamic air consumption DF of this system and system pipeline total capacity Q; this system pipeline total capacity Q comprises this gas storage unit 20; connect the pipeline of this gas storage unit 20 and the capacity of using end equipment 40; then; this logic module 32 is judged the consumption patterns of the pressurized gas in this gas storage unit 20 again according to the proportionate relationship of the dynamic air consumption DF of this system and system pipeline total capacity Q; and be sent to compressor unit 10 according to this consumption patterns output one control signal 33; before dropping to Minimum operating pressure with the gas pressure in gas storage unit 20, preset this compressor unit 10 and switch to the load operation state; no-load running state or outage state.
Cooperation indicates initial pressure value (the P0) (kg/cm of promising gas storage unit 20 referring to shown in Figure 2 on it
2), goal-selling force value (the P1) (kg/cm of gas storage unit 20
2), start this compressor unit 10 time (T0) (minute, min) and the pressure rise in the gas storage unit 20 to time (T1) of goal-selling pressure value P 1 (minute, min), in addition, make that the system pipeline total capacity is Q (m
3), the unit capacity of compressor unit 10 is C (m
3/ min).
Computing system pipeline total capacity Q at first: after starting compressor unit 10, gas pressure in this gas storage unit 20 can rise to goal-selling pressure value P 1 by initial pressure value P0, simultaneously, this control unit 20 can record the time T 0 that starts this compressor unit 10, and the pressure rise in the record gas storage unit 20 is to the time T 1 of goal-selling pressure value P 1, and calculate this system pipeline total capacity Q with the computing module 31 of this control unit 30, its formula is:
Q＝C×(T1-T0)
Further referring to shown in Figure 3, when this compressor unit 10 running, this control unit 30 can continue to receive the gas pressure signal 21 that this gas storage unit 20 sends, and wherein, is labeled with the first detecting value (Pa) (kg/cm of the gas pressure of gas storage unit 20 on Fig. 3
2), the second detecting value (Pb) (kg/cm of the gas pressure of gas storage unit 20
2), detect this gas storage unit 20 gas pressure the first detecting value Pa the first detecting time (Ta) (minute, min) and detect this gas storage unit 20 gas pressure the second detecting value Pb the second detecting time (Tb) (minute, min), in addition, make that system's dynamic air consumption is DF (kg/cm
2).
Follow computing system dynamic air consumption DF: make pressure variation institute elapsed time interval (Td) of computing module 31 these compressor units 10 of calculating of this control unit 30 (divide, min), Td=Tb-Ta wherein, and calculate accordingly the dynamic air consumption DF of this system; Wherein, the time lag Td capable of regulating that the pressure of this compressor unit 10 changes, again, the formula of the dynamic air consumption DF of this system is:
DF＝Td×Q
Above-mentioned time lag Td can set on demand, for example, when the time, interval T d was set as 5, represents that the computing module 31 of this control unit 30 can calculate primary system dynamic air consumption DF in per 5 minutes.
Further referring to shown in Figure 4, wherein, the P unload that indicates on the figure is the empty wagons force value of gas storage unit 20 under the no-load running state, and P trigger is the triggering force value of gas storage unit 20, and P load is the loaded vehicle force value of gas storage unit under the load operation state.Then judge the pattern that the gas pressure in this gas storage unit 20 descends: the logic module 32 comparison said system dynamic air consumption DF of this control unit 30 and the proportionate relationship of system pipeline total capacity Q, judge accordingly which kind of consumption patterns these gas storage unit 20 interior gas pressures belong at present, and control the operating condition of this compressor unit 10 according to consumption patterns output control signal 33, wherein:
When DF 〉=Q even DF＞1.2Q, the dynamic air consumption DF of expression system equals even much larger than system pipeline total capacity Q, at this moment, the setting consumption patterns is Mode A, make control unit 30 output control signals 33 to propose to warn and start main compressor and the auxiliary compressor of this compressor unit 10, making this compressor unit 10 is 100% full load operating condition;
When 0.7Q＜DF＜Q, the dynamic air consumption DF of expression system is slightly less than system pipeline total capacity Q, and at this moment, the setting consumption patterns is Mode B, make control unit 30 output control signals 33 to start the main compressor of this compressor unit 10, set this compressor unit 10 and be the load operation state;
When 0.5Q＜DF＜0.7Q, the dynamic air consumption DF of system is less than system pipeline total capacity Q in expression, and at this moment, setting consumption patterns is pattern C, makes control unit 30 output control signals 33 keep the no-load running states to set this compressor unit 10;
When 0.2Q＜DF＜0.5Q, the dynamic air consumption DF of expression system is much smaller than system pipeline total capacity Q, at this moment, setting consumption patterns is pattern D, makes control unit 30 output control signals 33 keep the no-load running state or carry out the load shedding running to set this compressor unit 10;
When DF＜0.2Q, the pressurized gas that expression using end equipment 40 does not use in the gas storage unit 20, at this moment, setting consumption patterns is pattern E, makes control unit 30 output control signals 33 shut down to set this compressor unit 10.
By aforesaid design, the active control system of air compressor of the present invention is by utilizing the control unit 30 20 internal pressures variation of detecting gas storage unit and the relations of time, and the mode of the proportionate relationship of computing system dynamic air consumption DF and system pipeline total capacity Q, judge the consumption patterns of the gas pressure in present this gas storage unit 20, thereby initiatively and switch in advance the operation mode of this compressor unit 10, avoid the gas pressure of gas storage unit 20 to drop to and be lower than its Minimum operating pressure, reach prevention using end equipment and technique are produced dysgenic purpose.
Claims (10)
1. the active control system of air compressor is characterized in that, it comprises:
One compressor unit;
One gas storage unit, it is connected with this compressor unit with pipeline;
One control unit, it has a computing module and a logic module, this computing module is according to the gas pressure change in the gas storage unit of detecting gained and the relation of time, calculate a system pipeline total capacity, one system's dynamic air consumption, and the proportionate relationship of this system's dynamic air consumption and system pipeline total capacity, this logic module is judged the consumption patterns of the pressurized gas in this gas storage unit according to the proportionate relationship of this system's dynamic air consumption and system pipeline total capacity, and to set this compressor unit according to this consumption patterns be the load operation state, no-load running state or the state that shuts down.
2. the active control system of air compressor according to claim 1 is characterized in that, the formula of aforementioned system pipeline total capacity is:
Q＝C×(T1-T0)；
Wherein, Q is the system pipeline total capacity, and C is the unit capacity of compressor unit, and T0 is for starting the time of this compressor unit, and T1 is that pressure rise in the gas storage unit is to time of goal-selling force value.
3. the active control system of air compressor according to claim 2 is characterized in that, the formula of aforementioned system dynamic air consumption is:
DF＝Td×Q；
Wherein, DF is system's dynamic air consumption, and Td is that the pressure of this compressor unit changes institute elapsed time interval.
4. the active control system of air compressor according to claim 3 is characterized in that, when DF＞1.2Q, making control unit propose caution and start this compressor unit is the full load operating condition.
5. the active control system of air compressor according to claim 3 is characterized in that, when DF 〉=Q, making control unit propose caution and start this compressor unit is the load operation state.
6. the active control system of air compressor according to claim 3 is characterized in that, when 0.7Q＜DF＜Q, making control unit set this compressor unit is the full load operating condition.
7. the active control system of air compressor according to claim 3 is characterized in that, when 0.5Q＜DF＜0.7Q, makes control unit set this compressor unit and keeps the no-load running state.
8. the active control system of air compressor according to claim 3 is characterized in that, when 0.2Q＜DF＜0.5Q, makes control unit set this compressor unit and keeps the no-load running state.
9. the active control system of air compressor according to claim 3 is characterized in that, when 0.2Q＜DF＜0.5Q, makes control unit set this compressor unit and carries out the load shedding running.
10. the active control system of air compressor according to claim 3 is characterized in that, when DF＜0.2Q, makes control unit set this compressor unit and shuts down.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW100125273A TWI447300B (en) | 2011-07-18 | 2011-07-18 | Active Compressor System for Air Compressor |
| TW100125273 | 2011-07-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102889201A true CN102889201A (en) | 2013-01-23 |
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ID=47532832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210034264XA Pending CN102889201A (en) | 2011-07-18 | 2012-02-15 | Active control system of air compressor |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102889201A (en) |
| TW (1) | TWI447300B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6287083B1 (en) * | 1999-04-14 | 2001-09-11 | Hitachi, Ltd. | Compressed air production facility |
| CN1534194A (en) * | 2003-03-31 | 2004-10-06 | 日立工机株式会社 | Air compressor and its controlling method |
| CN2663688Y (en) * | 2003-11-28 | 2004-12-15 | 夏武 | Automatic control device of air compressor |
| JP4119016B2 (en) * | 1998-09-29 | 2008-07-16 | 株式会社日立産機システム | LOAD MEASUREMENT DIAGNOSIS DEVICE FOR AIR COMPRESSOR AND AIR COMPRESSOR HAVING THE SAME |
| CN201461353U (en) * | 2009-08-21 | 2010-05-12 | 东莞市彩煌宇村电子有限公司 | Air compressor energy-saving system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6581623B1 (en) * | 1999-07-16 | 2003-06-24 | Advanced Technology Materials, Inc. | Auto-switching gas delivery system utilizing sub-atmospheric pressure gas supply vessels |
| US6857447B2 (en) * | 2002-06-10 | 2005-02-22 | Advanced Technology Materials, Inc. | Pressure-based gas delivery system and method for reducing risks associated with storage and delivery of high pressure gases |
| US6955198B2 (en) * | 2003-09-09 | 2005-10-18 | Advanced Technology Materials, Inc. | Auto-switching system for switch-over of gas storage and dispensing vessels in a multi-vessel array |
| JP4395836B2 (en) * | 2004-02-13 | 2010-01-13 | 日立工機株式会社 | Control method of air compressor |
| TWI379171B (en) * | 2007-12-27 | 2012-12-11 | Gudeng Prec Industral Co Ltd | Gas filling apparatus |
-
2011
- 2011-07-18 TW TW100125273A patent/TWI447300B/en active
-
2012
- 2012-02-15 CN CN201210034264XA patent/CN102889201A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4119016B2 (en) * | 1998-09-29 | 2008-07-16 | 株式会社日立産機システム | LOAD MEASUREMENT DIAGNOSIS DEVICE FOR AIR COMPRESSOR AND AIR COMPRESSOR HAVING THE SAME |
| US6287083B1 (en) * | 1999-04-14 | 2001-09-11 | Hitachi, Ltd. | Compressed air production facility |
| CN1534194A (en) * | 2003-03-31 | 2004-10-06 | 日立工机株式会社 | Air compressor and its controlling method |
| CN2663688Y (en) * | 2003-11-28 | 2004-12-15 | 夏武 | Automatic control device of air compressor |
| CN201461353U (en) * | 2009-08-21 | 2010-05-12 | 东莞市彩煌宇村电子有限公司 | Air compressor energy-saving system |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI447300B (en) | 2014-08-01 |
| TW201305442A (en) | 2013-02-01 |
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Application publication date: 20130123 |