CN106523336A - Air compression system group control method - Google Patents
Air compression system group control method Download PDFInfo
- Publication number
- CN106523336A CN106523336A CN201610984772.2A CN201610984772A CN106523336A CN 106523336 A CN106523336 A CN 106523336A CN 201610984772 A CN201610984772 A CN 201610984772A CN 106523336 A CN106523336 A CN 106523336A
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- Prior art keywords
- air
- compressor set
- unit
- compression system
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/02—Stopping, starting, unloading or idling control
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B51/00—Testing machines, pumps, or pumping installations
Abstract
The invention discloses an air compression system group control method. The air compression system group control method comprises the following steps: firstly, monitoring operating data of each air compressor set; secondly, analyzing the aspects, such as the rated air production amount F.max of each air compressor set, the minimum compressed air flow supply amount Fv.min when a variable frequency air compressor set operates at a minimum frequency, operating time, unloading time and faults, by analyzing the monitored data of each air compressor set; thirdly, detecting the air supply pressure and the air supply flow of an air compression system and the air supply flow of each air compressor set and optimizing an air compressor set group control strategy. According to the air compression system group control method, the operating system of the air compression system is improved; normal operation of each air compressor set is ensured; the air compressor set shutdown and air compressor set unloading time are reduced. The purpose of operating the group control of air compressor sets is realized, and the purposes of optimizing control, improving the operating efficiency of the air compression system, improving the energy use efficiency and guaranteeing the production are achieved.
Description
Technical field
The present invention relates to a kind of air compressor machine, more particularly to a kind of air compression system team control control method.
Background technology
Air compressor host, cooling driers main process equipment carry control system, are relatively independent systems.Pneumatics is covered often
Unit includes following equipment：Air compressor host, cooling driers, air accumulator.Amount to 5 sets of air-compressor sets in the system, using caloic formula
Flow instrument is to each separate unit air-compressor set aerogenesis flow and the total gas supply flow on-line checking of air compression system, each air-compressor set equipment
Performance parameter is just the same.It is responsible for realizing the control of other subsidiary engine equipment of air compression system by newly-increased control system（Such as：Recirculated water
Pump, control of blower fan of cooling tower etc.）, while each operation to air-compressor set is communicated by bus with each air-compressor set equipment
Parameter is read out, and starting and stopping control is realized to air-compressor set.The work(such as air compressor machine, the control of cooling driers device interior, relay protective scheme
Control system can be carried by equipment to complete.Wherein, two sets of units are frequency converter sets, and remaining unit is non-frequency unit.Normal
Under the condition of production, each air-compressor set puts into team control, realizes the input to each air-compressor set, excision by subsidiary engine controller.
The content of the invention
It is an object of the invention to provide a kind of air compression system team control control method, it is possible to increase air compression system operational efficiency,
Ensure that air-compressor set normally runs, reduce air-compressor set and shut down, reduce air-compressor set discharge time.
The present invention adopts following technical proposals：
A kind of air compression system team control control method, including three below step A-C；
A：Each air-compressor set service data is monitored, i.e. data collection；Described data collection is included to air-compressor set
It is compressed air require minimum air demand Fv.min of specified gas production F.max, frequency conversion air compressor group when minimum frequency runs, each
The run time of individual separate unit air-compressor set, load time, discharge time are carried out counting, are calculated；Simultaneously air compressor machine is transported at this
Load-unload number of times and frequency in the row time is calculated, and to air compressor machine, this run time is calculated；
B：Then being analyzed to the Monitoring Data that obtains, obtains maximum throughput, the minimum air-flow of air compressor system
Amount, and formulate control strategy：Described control strategy includes as follows：
B1：When air compression system team control puts into operation, frequency converter sets are put into；When compressed air main pipe supply gas pressure is low again
One power frequency unit of input；And the unit that the time of preferentially putting into operation during aforesaid operations is short；
B2：Current gas consumption is less than the unit maximum gas production and both differences being currently running more than separate unit air-compressor set
During maximum gas production, time delay cuts off a pneumatics team control unit for a period of time afterwards；And aforesaid operations preferentially cut off run time most
Long unit；
B3：When the team control unit operation of input, add the unloading frequency height, and the undulating value of current gas consumption of unit are not being worked as
In the range of gas production that front frequency converter sets are adjustable, then frequency converter sets are put into while cutting off a power frequency unit, make currently to use gas
The undulating value of amount is entered in normal fluctuation range；The power frequency unit that illustrates now to put into, frequency converter sets number combinations are unreasonable；Need
Frequency converter sets are put into again while cutting off a power frequency unit.
C：The gas supply flow of air compression system supply gas pressure, gas supply flow and each air-compressor set is entered using above-mentioned control plan
Row detection, is optimized to air-compressor set automation strategy；Improve air compression system operational efficiency, it is ensured that air-compressor set normally runs,
Reduce air-compressor set to shut down, reduce air-compressor set discharge time.
Described control strategy also comprises the steps, B4:To putting into operation, unit was done after corresponding a period of time
Team control excision puts into corresponding standby unit simultaneously, so as to ensure balanced, the average use of each air-compressor set；And this step operation
Shi Youxian puts into operation time short standby unit.
The present invention is by the monitoring to each air-compressor set service data, the analysis to air-compressor set Monitoring Data and to sky
Specified maximum air demand F.max of press group, when air demand Fv.min, run time during frequency converter sets minimum frequency, unloading
Between, the aspect such as failure is analyzed；The last confession air-flow to air compression system supply gas pressure, gas supply flow F and each air-compressor set
Amount is detected, air-compressor set automation strategy is optimized.So as to realize the purpose to air compressor machine unit team control operation, with
Reach optimal control, improve air compression system operational efficiency, improve energy use efficiency, ensure the purpose of production.
Description of the drawings
Fig. 1 is flow chart of the present invention.
Specific embodiment
As shown in figure 1, a kind of air compression system team control control method, including three below step A-C；
A：Each air-compressor set service data is monitored, i.e. data collection；Described data collection is included to specified maximum confession
Tolerance F-max, air demand Fv-min, the run time of each separate unit air-compressor set, load time during frequency converter sets minimum frequency,
Discharge time is carried out counting, is calculated；Load-unload number of times to air-compressor set in this run time is calculated simultaneously, right
Air-compressor set this run time is calculated, pressure during maximum compression air mass flow, minimum frequency to frequency conversion air compressor group
Stream of compressed air amount FV_min is counted；Above-mentioned data statisticss and time are calculated as simple computation, the known meter of personnel in field
Calculation method, will not be described in detail herein.
B：Then being analyzed to the Monitoring Data that obtains, and formulate control strategy：Described control strategy include as
Under：
B1：Air-compressor set team control puts into：
When air compression system team control puts into operation, frequency converter sets are put into；Thrown when compressed air main pipe supply gas pressure is low again
Enter a power frequency unit；And the unit that the time of preferentially putting into operation during aforesaid operations is short；
Air-compressor set team control input is mainly put into according to main pipe supply gas pressure situation of change.The input choosing of concrete air-compressor set
Situation is selected, then prioritizing selection is carried out according to air-compressor set run time.
B2：Air-compressor set team control cuts off：
Current gas consumption is less than the unit maximum gas production and both differences being currently running more than separate unit air-compressor set most
During big gas production, time delay cuts off a pneumatics team control unit for a period of time afterwards；And aforesaid operations preferentially to cut off run time most long
Unit；
After each air-compressor set team control input, laggard grade is calculated according to current gas consumption and is cut off.
I.e.：F.max*N-F>F.max
Wherein：F.max is the specified gas production of air-compressor set, and N is the air compressor machine quantity of current operation（Including power frequency unit, frequency conversion
Unit）, F compressed air tolerance used by current production.
After there is case above, to avoid frequently start-stop air-compressor set, a pneumatics after time delay certain hour, is cut off
Unit.
B3：When the team control unit operation of input, adding for unit unloads frequency height, and the undulating value of current gas consumption is not
In the range of the adjustable gas production of current frequency converter sets, the power frequency unit that illustrates now to put into, frequency converter sets number combinations are unreasonable；
Frequency converter sets are put into again while cutting off a power frequency unit, make the undulating value of current gas consumption enter normal fluctuation range
It is interior；
I.e.：
Wherein：F.max is the specified gas production of air-compressor set, and F compressed air tolerance used by current production, Fv.min are that frequency conversion is empty
Compressed air require of the press group when minimum frequency runs, rounddown are rounded for function.
C：The gas supply flow of air compression system supply gas pressure, gas supply flow and each air-compressor set is entered using above-mentioned control plan
Row detection, this is detected as the detection numerical value of measuring instrument, is the signal-obtaining detection of system support.To air-compressor set automation strategy
It is optimized；Improve air compression system operational efficiency, it is ensured that air-compressor set normally runs, reduce air-compressor set and shut down, reduce pneumatics
Unit discharge time
Also comprise the steps, team control excision is done while input is corresponding after corresponding a period of time to the unit that puts into operation
Standby unit, so as to ensure balanced, the average use of each air-compressor set；And the time of preferentially putting into operation during this step operation is short
Standby unit.
The present invention is read to each air-compressor set device parameter by field bus technique.By subsidiary engine group control system to sky
Press run time, load time carry out counting, calculate, while the Load-unload number of times to air compressor machine in this run time
Calculated, to air compressor machine, this run time is calculated.Air compression system operational monitoring data collection is also included to pneumatics
The parameters such as specified gas production F.max of unit, compressed air require Fv.min of the frequency conversion air compressor group when minimum frequency runs.
Claims (2)
1. a kind of air compression system team control control method, it is characterised in that：Including three below step A-C；
A：Each air-compressor set service data is monitored, i.e. data collection；Described data collection is included to air-compressor set
It is compressed air require minimum air demand Fv.min of specified gas production F.max, frequency conversion air compressor group when minimum frequency runs, each
The run time of individual separate unit air-compressor set, load time, discharge time are carried out counting, are calculated；Simultaneously air compressor machine is transported at this
Load-unload number of times and frequency in the row time is calculated, and to air compressor machine, this run time is calculated；
B：Then being analyzed to the Monitoring Data that obtains, and formulate control strategy：Described control strategy includes as follows：
B1：When air compression system team control puts into operation, frequency converter sets are put into；When compressed air main pipe supply gas pressure is low again
One power frequency unit of input；And the unit that the time of preferentially putting into operation during aforesaid operations is short；
B2：Current gas consumption is less than the unit maximum gas production and both differences being currently running more than separate unit air-compressor set
During maximum gas production, time delay cuts off a pneumatics team control unit for a period of time afterwards；And aforesaid operations preferentially cut off run time most
Long unit；
B3：When the team control unit operation of input, add the unloading frequency height, and the undulating value of current gas consumption of unit are not being worked as
In the range of gas production that front frequency converter sets are adjustable, then frequency converter sets are put into while cutting off a power frequency unit, make currently to use gas
The undulating value of amount is entered in normal fluctuation range；
C：The gas supply flow of air compression system supply gas pressure, gas supply flow and each air-compressor set is examined using above-mentioned control plan
Survey, air-compressor set automation strategy is optimized；Improve air compression system operational efficiency, it is ensured that air-compressor set normally runs, reduce
Air-compressor set shuts down, reduces air-compressor set discharge time.
2. air compression system team control control method according to claim 1, it is characterised in that：Described control strategy also includes
Following steps, do team control excision to the unit that puts into operation after corresponding a period of time while putting into corresponding standby unit,
So as to ensure balanced, the average use of each air-compressor set；And the standby unit that the time of preferentially putting into operation during this step operation is short.
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107023473A (en) * | 2017-05-10 | 2017-08-08 | 江苏省镇江船厂（集团）有限公司 | Compressed air process units |
| CN108825481A (en) * | 2018-08-28 | 2018-11-16 | 上海弦慧新能源科技有限公司 | energy efficiency management system and method |
| CN109737040A (en) * | 2018-11-29 | 2019-05-10 | 珠海市奥吉赛科技有限公司 | Integrated-type medical negative pressure of vacuum electrical-mechanical control system and its electric control method |
| CN110552871A (en) * | 2019-08-19 | 2019-12-10 | 武汉世纪楚林科技有限公司 | Air compressor group control energy-saving method and device, terminal equipment and storage medium |
| CN110905792A (en) * | 2019-11-28 | 2020-03-24 | 浙江精工能源科技集团有限公司 | Air compressor control system and method based on energy internet cloud computing |
| CN111043020A (en) * | 2019-12-26 | 2020-04-21 | 新奥数能科技有限公司 | Operation and maintenance monitoring method and device for air compressor |
| CN111927776A (en) * | 2020-08-19 | 2020-11-13 | 蘑菇物联技术（深圳）有限公司 | Variable-frequency air compressor set energy-saving method based on edge calculation |
| CN112302919A (en) * | 2020-10-29 | 2021-02-02 | 新奥数能科技有限公司 | Cloud computing-based optimization control method and system for multiple air compressors |
| CN112539161A (en) * | 2020-12-09 | 2021-03-23 | 上海安悦节能技术有限公司 | Air compressor system control method based on data driving |
| CN113537644A (en) * | 2021-08-23 | 2021-10-22 | 中冶赛迪技术研究中心有限公司 | Multi-air compression station dynamic collaborative optimization regulation and control system and method |
| CN113847232A (en) * | 2021-07-28 | 2021-12-28 | 合肥工业大学 | Air compressor cluster operation adjusting method and system based on cloud edge cooperation |
| CN114017300A (en) * | 2021-11-12 | 2022-02-08 | 广州发展南沙电力有限公司 | Intelligent group control method and system for air compressor unit |
| CN114352511A (en) * | 2021-12-28 | 2022-04-15 | 南京尚爱机械制造有限公司 | Method for reducing no-load of air compressor in multi-air-compressor operation |
| CN114017300B (en) * | 2021-11-12 | 2024-04-19 | 广州发展南沙电力有限公司 | Intelligent group control method and system for air compressor unit |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0861248A (en) * | 1994-08-12 | 1996-03-08 | Kobe Steel Ltd | Method and device for controlling operation of compressor |
| JPH1030574A (en) * | 1996-07-12 | 1998-02-03 | Haruo Orihashi | Operation control device of gas compressor |
| JP3729648B2 (en) * | 1998-07-21 | 2005-12-21 | 株式会社日立製作所 | Control device and control method for air compressor |
| CN202144794U (en) * | 2011-07-21 | 2012-02-15 | 上海优耐特斯压缩机有限公司 | Screw compressor frequency conversion one-controlling-three system |
| CN205638867U (en) * | 2016-03-31 | 2016-10-12 | 深圳市新环能科技有限公司 | Air compressor machine frequency conversion and team control control system |
| CN106050634A (en) * | 2016-08-11 | 2016-10-26 | 福建景丰科技有限公司 | Air compressor group control system and control method thereof |
-
2016
- 2016-11-09 CN CN201610984772.2A patent/CN106523336B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0861248A (en) * | 1994-08-12 | 1996-03-08 | Kobe Steel Ltd | Method and device for controlling operation of compressor |
| JPH1030574A (en) * | 1996-07-12 | 1998-02-03 | Haruo Orihashi | Operation control device of gas compressor |
| JP3729648B2 (en) * | 1998-07-21 | 2005-12-21 | 株式会社日立製作所 | Control device and control method for air compressor |
| CN202144794U (en) * | 2011-07-21 | 2012-02-15 | 上海优耐特斯压缩机有限公司 | Screw compressor frequency conversion one-controlling-three system |
| CN205638867U (en) * | 2016-03-31 | 2016-10-12 | 深圳市新环能科技有限公司 | Air compressor machine frequency conversion and team control control system |
| CN106050634A (en) * | 2016-08-11 | 2016-10-26 | 福建景丰科技有限公司 | Air compressor group control system and control method thereof |
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107023473A (en) * | 2017-05-10 | 2017-08-08 | 江苏省镇江船厂（集团）有限公司 | Compressed air process units |
| CN108825481A (en) * | 2018-08-28 | 2018-11-16 | 上海弦慧新能源科技有限公司 | energy efficiency management system and method |
| CN109737040A (en) * | 2018-11-29 | 2019-05-10 | 珠海市奥吉赛科技有限公司 | Integrated-type medical negative pressure of vacuum electrical-mechanical control system and its electric control method |
| CN109737040B (en) * | 2018-11-29 | 2020-06-05 | 珠海市奥吉赛科技有限公司 | Integrated medical vacuum negative-pressure machine electrical control system and electrical control method thereof |
| CN110552871A (en) * | 2019-08-19 | 2019-12-10 | 武汉世纪楚林科技有限公司 | Air compressor group control energy-saving method and device, terminal equipment and storage medium |
| CN110552871B (en) * | 2019-08-19 | 2020-09-18 | 武汉世纪楚林科技有限公司 | Air compressor group control energy-saving method and device, terminal equipment and storage medium |
| CN110905792A (en) * | 2019-11-28 | 2020-03-24 | 浙江精工能源科技集团有限公司 | Air compressor control system and method based on energy internet cloud computing |
| CN110905792B (en) * | 2019-11-28 | 2021-01-05 | 浙江精工能源科技集团有限公司 | Air compressor control system and method based on energy internet cloud computing |
| CN111043020B (en) * | 2019-12-26 | 2021-09-24 | 新奥数能科技有限公司 | Operation and maintenance monitoring method and device for air compressor |
| CN111043020A (en) * | 2019-12-26 | 2020-04-21 | 新奥数能科技有限公司 | Operation and maintenance monitoring method and device for air compressor |
| CN111927776A (en) * | 2020-08-19 | 2020-11-13 | 蘑菇物联技术（深圳）有限公司 | Variable-frequency air compressor set energy-saving method based on edge calculation |
| CN111927776B (en) * | 2020-08-19 | 2022-02-18 | 蘑菇物联技术（深圳）有限公司 | Variable-frequency air compressor set energy-saving method based on edge calculation |
| CN112302919A (en) * | 2020-10-29 | 2021-02-02 | 新奥数能科技有限公司 | Cloud computing-based optimization control method and system for multiple air compressors |
| CN112302919B (en) * | 2020-10-29 | 2022-09-27 | 新奥数能科技有限公司 | Cloud computing-based optimization control method and system for multiple air compressors |
| CN112539161A (en) * | 2020-12-09 | 2021-03-23 | 上海安悦节能技术有限公司 | Air compressor system control method based on data driving |
| CN113847232A (en) * | 2021-07-28 | 2021-12-28 | 合肥工业大学 | Air compressor cluster operation adjusting method and system based on cloud edge cooperation |
| CN113537644A (en) * | 2021-08-23 | 2021-10-22 | 中冶赛迪技术研究中心有限公司 | Multi-air compression station dynamic collaborative optimization regulation and control system and method |
| CN113537644B (en) * | 2021-08-23 | 2022-07-08 | 中冶赛迪技术研究中心有限公司 | Multi-air compression station dynamic collaborative optimization regulation and control system and method |
| CN114017300A (en) * | 2021-11-12 | 2022-02-08 | 广州发展南沙电力有限公司 | Intelligent group control method and system for air compressor unit |
| CN114017300B (en) * | 2021-11-12 | 2024-04-19 | 广州发展南沙电力有限公司 | Intelligent group control method and system for air compressor unit |
| CN114352511A (en) * | 2021-12-28 | 2022-04-15 | 南京尚爱机械制造有限公司 | Method for reducing no-load of air compressor in multi-air-compressor operation |
| CN114352511B (en) * | 2021-12-28 | 2024-02-23 | 南京尚爱机械制造有限公司 | Method for reducing idle load of air compressor in multi-machine operation of air compressor |
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