CN102644585A - Air compressor hybrid control system and method - Google Patents
Air compressor hybrid control system and method Download PDFInfo
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- CN102644585A CN102644585A CN2012101222128A CN201210122212A CN102644585A CN 102644585 A CN102644585 A CN 102644585A CN 2012101222128 A CN2012101222128 A CN 2012101222128A CN 201210122212 A CN201210122212 A CN 201210122212A CN 102644585 A CN102644585 A CN 102644585A
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000001105 regulatory effect Effects 0.000 claims abstract description 4
- 230000005540 biological transmission Effects 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 claims description 3
- 230000000295 complement effect Effects 0.000 abstract 1
- 238000012544 monitoring process Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 76
- 239000010865 sewage Substances 0.000 description 6
- 238000005273 aeration Methods 0.000 description 3
- 238000005065 mining Methods 0.000 description 3
- 239000003973 paint Substances 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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Abstract
The invention discloses an air compressor hybrid control system, which comprises a main PLC (programmable logic controller) and plural local PLCs. The main PLC is connected with a main touch screen via an MPI (multi point interface) bus and with a monitoring computer via a PROFIBUS (process field bus); and each local PLC is connected with the main PLC via a PROFIBUS, with one local touch screen via an MPI bus and with a regulating valve, an emptying valve, a flow meter, a temperature transmitter, a pressure transmitter and a servo controller arranged on one air compressor via a PROFIBUS. The inventive system has characteristics of reasonable design, stable operation and long service life. The inventive method adopts integrated and independent control modes, realizes complementary advantages, improves compressor working efficiency, effectively realizes energy-saving and emission reduction, and lowers operation costs.
Description
Technical field
The present invention relates to a kind of system of control system of gas compression machine, specifically, is a kind of based on unified and separate gas compressor hybrid control system; The invention still further relates to the mixing control method of aforementioned gas compressor.
Background technique
Industries such as the sewage treatment in China city, shipbuilding paint spraying, chemical industry, mining are all used air compressor, and in use constant pressure and flow is most important.Wherein sewage treatment industry is in whole biological treatment process, and having kept the dissolved oxygen environment through aeration is one of them important link.Gas compressor is as the machinery that often adopts in the aeration in sewage treatment link, and the normal operation of sewage treatment works is played an important role; Gas compressor also is the maximum link of energy consumption simultaneously, so the control that becomes more meticulous of gas compressor system is significant to the energy-saving run of entire sewage treatment plant.The constant pressure and flow of industry compressors such as shipbuilding paint spraying, chemical industry, mining has very big influence to working condition, working efficiency and the workmanship of load, so the accurate control of gas compressor system is significant to the quality of Security, high efficiency and the product of industries such as raising shipbuilding paint spraying, chemical industry, mining.
The aeration blower that the controlling method of present air compressor such as sewage treatment are used all is to use independently control mode with the multistage gas compressor that industry is used.Its advantage of unified control mode based on master control is the simple realization easily of control, and under the working state of the greater efficiency that unit can keep, the unit wearing and tearing are less.Shortcoming is that the abnormal state main controller of each unit can not in time reflect and make action, and this is unfavorable for the timely solution of potential faults.And the abnormal state main controller of independent control mode unit can not in time reflect and make action, and this is unfavorable for the timely solution of potential faults.
Summary of the invention
Technical problem to be solved by this invention is the deficiency to present gas compressor controlling method, designs more reasonable, as can to realize the gas compressor that unified and independent control combines hybrid control system.
Another technical problem to be solved by this invention is that the method that said system is carried out the mixing control of gas compressor of using also is provided.
Problem to be solved by this invention is to realize through following technological scheme.The present invention is a kind of hybrid control system of gas compressor, is characterized in:
This system comprises master controller PLC and some PLC of controller on the spot;
Master controller PLC is connected with main touch screen through the MPI bus, and is connected with supervisory control comuter through the PROFIBUS bus; Respectively controller PLC all is connected with master controller PLC through the PROFIBUS bus on the spot;
Each on the spot controller PLC through the MPI bus with one on the spot touch screen be connected, and through the PROFIBUS bus be located at modulating valve, atmospheric valve, flowmeter, temperature transmitter, pressure transmitter and a servocontroller on the gas compressor and be connected.
Technical problem to be solved by this invention can also further realize through following technological scheme.The invention also discloses a kind of mixing control method of gas compressor, be characterized in:
This method is used the described hybrid control system of above technological scheme and is mixed control;
Hybrid control system presets a gas stream value according to concrete working condition before starting in master controller PLC, master controller PLC does scan round and detects whether there is fault before each gas compressor starts during system start-up; When system moves, compare to determine whether start next gas compressor, and adopt the output power of conventional pid control algorithm adjustments of gas compressor according to measured value and setting value; Come the operational efficiency of compressor bank through the adjusting of gas compressor entry guide vane aperture; Under the telecontrol mode; Adopt intelligent constant voltage regulation technology by master controller PLC, the aperture of regulating exit guide blade according to the demand and the gas transmission pipeline net work back pressure of house steward's air inlet;
Each gas compressor starts by platform by the authority of setting in proper order; Master controller PLC only controls a gas compressor at synchronization; Based on pre-determined priority facility, in the process of adjustment operation gas compressor platform number, adopt the flow-compensated influence of setting among the master controller PLC that reduces to greatest extent gas transmission pipeline net work;
In the hybrid control system running, when the situation that air demand can't satisfy the demand occurring, increase the air feed output of gas compressor; In preference is that the 1st gas compressor gas supply capacity is when not enough; It is the 2nd gas compressor to preference that master controller PLC sends enabled instruction; And activate starting the compensation timer of master controller PLC, it is that the air quantity of the 1st gas compressor reduces that master controller PLC still controls preference this moment, up to regularly finishing; Increase preference more as required and be the 1st gas compressor wind supply quantity; Arriving maximum wind supply quantity until it, is the 2nd gas compressor work then by master controller PLC control preference, is the gas compressor work of n (n is a positive integer) until the control preference by that analogy; When needs reduce air demand; Reducing preference earlier also is that preference is the air demand of the gas compressor of n for the most last grade; According to priority reduce one by one from low to high again; Be the operation of the 2nd gas compressor until reducing the air demand that preference is the 1st gas compressor, stopping preference again, stable to guarantee system's air feed;
The fault critical point that breaks down or be in is arranged in gas compressor, and controller PLC will regulate this gas compressor running state automatically and reach and eliminate or avoid fault to take place on the spot; When separate unit gas compressor unit on-the-job satisfaction needs, through its controller PLC realization operation and control automatically on the spot;
In the gas compressor course of normal operation; Variation according to atmosphere environment, load and exit guide blade aperture; Through the variation of automatic adjusting entry guide vane angle, regulate the direction of charge flow rate, taking into account on the basis of flow control; Carry out efficiency-adjusted, make equipment operation under optimum Working;
During shutdown, send instruction by master controller PLC and stop unit by platform, controller PLC stops each gas compressor by the utmost points such as the preference shutdown sequence of setting from low to high on the spot.
Compared with prior art, System and method for of the present invention has the following advantages:
1, system of the present invention makes gas compressor under the prerequisite that satisfies the proof load demand, realizes optimum output of unit and pipe network steady air current, thereby improves the stability of system and the working life of equipment.
2, system of the present invention has avoided manual tune to be prone to the drawback that causes surge to take place, and it is minimum that energy loss is dropped to, and reaches purpose of energy saving.
3, the inventive method adopts unified and independent control mode, has realized mutual supplement with each other's advantages, has improved the working efficiency of compressor, effectively realizes cutting operating costs energy-saving and emission-reduction.When demand gas flow during greater than current gas compressor peak output, system starts the auxiliary gas compressor automatically, and the output power of adjustment whole system all gas compressor, to realize the safe and efficient power save mode operation of being in of system.The entire system operation conditions is judged in master control during unified control, and based on the adjustment of actual operating state to set state.Independent control is to control separately to every unit, and when certain unit is under a kind of state that moves critical condition, autonomous control system is the running state of adjustment unit automatically, realizes the safe operation of unit.Adopt unified and the control mode that independently combines both to guarantee the operation of the stable and optimum efficiency of system, can improve Security and fault-free average time of gas compressor again, reach the energy-conservation effect of system.
Description of drawings
Fig. 1 is a kind of system schematic block diagram of system of the present invention;
Fig. 2 shows block diagram for the mixing control of the inventive method.
Embodiment
Following with reference to accompanying drawing, further describe concrete technological scheme of the present invention, so that those skilled in the art understands the present invention further, and do not constitute restriction to its right.
Embodiment 1, with reference to Fig. 1, and a kind of hybrid control system of gas compressor,
This system comprises master controller PLC and some PLC of controller on the spot;
Master controller PLC is connected with main touch screen through the MPI bus, and is connected with supervisory control comuter through the PROFIBUS bus; Respectively controller PLC all is connected with master controller PLC through the PROFIBUS bus on the spot;
Each on the spot controller PLC through the MPI bus with one on the spot touch screen be connected, and through the PROFIBUS bus be located at modulating valve, atmospheric valve, flowmeter, temperature transmitter, pressure transmitter and a servocontroller on the gas compressor and be connected.
Embodiment 2, with reference to Fig. 1, and 2, a kind of mixing control method of gas compressor,
This method application implementation example 1 described hybrid control system is mixed control;
Hybrid control system presets a gas stream value according to concrete working condition before starting in master controller PLC, master controller PLC does scan round and detects whether there is fault before each gas compressor starts during system start-up; When system moves, compare to determine whether start next gas compressor, and adopt the output power of conventional pid control algorithm adjustments of gas compressor according to measured value and setting value; Come the operational efficiency of compressor bank through the adjusting of gas compressor entry guide vane aperture; Under the telecontrol mode; Adopt intelligent constant voltage regulation technology by master controller PLC, the aperture of regulating exit guide blade according to the demand and the gas transmission pipeline net work back pressure of house steward's air inlet;
Each gas compressor starts by platform by the authority of setting in proper order; Master controller PLC only controls a gas compressor at synchronization; Based on pre-determined priority facility, in the process of adjustment operation gas compressor platform number, adopt the flow-compensated influence of setting among the master controller PLC that reduces to greatest extent gas transmission pipeline net work;
In the hybrid control system running, when the situation that air demand can't satisfy the demand occurring, increase the air feed output of gas compressor; In preference is that the 1st gas compressor gas supply capacity is when not enough; It is the 2nd gas compressor to preference that master controller PLC sends enabled instruction; And activate starting the compensation timer of master controller PLC, it is that the air quantity of the 1st gas compressor reduces that master controller PLC still controls preference this moment, up to regularly finishing; Increase preference more as required and be the 1st gas compressor wind supply quantity; Arriving maximum wind supply quantity until it, is the 2nd gas compressor work then by master controller PLC control preference, is the gas compressor work of n until the control preference by that analogy; When needs reduce air demand; Reducing preference earlier also is that preference is the air demand of the gas compressor of n for the most last grade; According to priority reduce one by one from low to high again; Be the operation of the 2nd gas compressor until reducing the air demand that preference is the 1st gas compressor, stopping preference again, stable to guarantee system's air feed;
The fault critical point that breaks down or be in is arranged in gas compressor, and controller PLC will regulate this gas compressor running state automatically and reach and eliminate or avoid fault to take place on the spot; When separate unit gas compressor unit on-the-job satisfaction needs, through its controller PLC realization operation and control automatically on the spot;
In the gas compressor course of normal operation; Variation according to atmosphere environment, load and exit guide blade aperture; Through the variation of automatic adjusting entry guide vane angle, regulate the direction of charge flow rate, taking into account on the basis of flow control; Carry out efficiency-adjusted, make equipment operation under optimum Working;
During shutdown, send instruction by master controller PLC and stop unit by platform, controller PLC stops each gas compressor by the utmost points such as the preference shutdown sequence of setting from low to high on the spot.
Claims (2)
1. the hybrid control system of a gas compressor is characterized in that:
This system comprises master controller PLC and some PLC of controller on the spot;
Master controller PLC is connected with main touch screen through the MPI bus, and is connected with supervisory control comuter through the PROFIBUS bus; Respectively controller PLC all is connected with master controller PLC through the PROFIBUS bus on the spot;
Each on the spot controller PLC through the MPI bus with one on the spot touch screen be connected, and through the PROFIBUS bus be located at modulating valve, atmospheric valve, flowmeter, temperature transmitter, pressure transmitter and a servocontroller on the gas compressor and be connected.
2. the mixing control method of a gas compressor is characterized in that:
This method application rights requires 1 described hybrid control system to mix control;
Hybrid control system presets a gas stream value according to concrete working condition before starting in master controller PLC, master controller PLC does scan round and detects whether there is fault before each gas compressor starts during system start-up; When system moves, compare to determine whether start next gas compressor, and adopt the output power of conventional pid control algorithm adjustments of gas compressor according to measured value and setting value; Come the operational efficiency of compressor bank through the adjusting of gas compressor entry guide vane aperture; Under the telecontrol mode; Adopt intelligent constant voltage regulation technology by master controller PLC, the aperture of regulating exit guide blade according to the demand and the gas transmission pipeline net work back pressure of house steward's air inlet;
Each gas compressor starts by platform by the authority of setting in proper order; Master controller PLC only controls a gas compressor at synchronization; Based on pre-determined priority facility, in the process of adjustment operation gas compressor platform number, adopt the flow-compensated influence of setting among the master controller PLC that reduces to greatest extent gas transmission pipeline net work;
In the hybrid control system running, when the situation that air demand can't satisfy the demand occurring, increase the air feed output of gas compressor; In preference is that the 1st gas compressor gas supply capacity is when not enough; It is the 2nd gas compressor to preference that master controller PLC sends enabled instruction; And activate starting the compensation timer of master controller PLC, it is that the air quantity of the 1st gas compressor reduces that master controller PLC still controls preference this moment, up to regularly finishing; Increase preference more as required and be the 1st gas compressor wind supply quantity; Arriving maximum wind supply quantity until it, is the 2nd gas compressor work then by master controller PLC control preference, is the gas compressor work of n until the control preference by that analogy; When needs reduce air demand; Reducing preference earlier also is that preference is the air demand of the gas compressor of n for the most last grade; According to priority reduce one by one from low to high again; Be the operation of the 2nd gas compressor until reducing the air demand that preference is the 1st gas compressor, stopping preference again, stable to guarantee system's air feed;
The fault critical point that breaks down or be in is arranged in gas compressor, and controller PLC will regulate this gas compressor running state automatically and reach and eliminate or avoid fault to take place on the spot; When separate unit gas compressor unit on-the-job satisfaction needs, through its controller PLC realization operation and control automatically on the spot;
In the gas compressor course of normal operation; Variation according to atmosphere environment, load and exit guide blade aperture; Through the variation of automatic adjusting entry guide vane angle, regulate the direction of charge flow rate, taking into account on the basis of flow control; Carry out efficiency-adjusted, make equipment operation under optimum Working;
During shutdown, send instruction by master controller PLC and stop unit by platform, controller PLC stops each gas compressor by the utmost points such as the preference shutdown sequence of setting from low to high on the spot.
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| CN201210122212.8A CN102644585B (en) | 2012-04-25 | 2012-04-25 | Air compressor hybrid control system and method |
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| CN201210122212.8A CN102644585B (en) | 2012-04-25 | 2012-04-25 | Air compressor hybrid control system and method |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102901191A (en) * | 2012-10-26 | 2013-01-30 | 江苏兆胜空调有限公司 | System and method for controlling marine module water chilling unit |
| CN104179707A (en) * | 2014-08-07 | 2014-12-03 | 上海英格索兰压缩机有限公司 | Controlling method and system for air compression system |
| CN104214081B (en) * | 2013-06-05 | 2016-05-11 | 中国石油天然气股份有限公司 | A kind of air compressor unit mixing control method |
| CN107131118A (en) * | 2017-05-02 | 2017-09-05 | 辽宁工程技术大学 | A kind of pressure fan group linkage hybrid control system and method |
| CN106246525B (en) * | 2016-08-31 | 2019-02-01 | 珠海格力电器股份有限公司 | Compressor progress control method and device |
| CN109814374A (en) * | 2019-01-30 | 2019-05-28 | 重庆江增船舶重工有限公司 | A kind of automatic joint debugging system and its control method of more air blower units |
| CN110617207A (en) * | 2019-09-18 | 2019-12-27 | 长兴旗滨玻璃有限公司 | Automatic control method, device and system for air compressor and computer readable medium |
| CN110617205A (en) * | 2018-06-19 | 2019-12-27 | 中国石油集团西部管道有限责任公司 | Remote automatic control system of natural gas long-distance pipeline compressor unit |
| 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 |
| CN111692087A (en) * | 2020-07-08 | 2020-09-22 | 中国船舶电站设备有限公司 | Low-pressure control system of LNG (liquefied Natural gas) supply unit |
| CN115414772A (en) * | 2022-08-30 | 2022-12-02 | 内蒙古伊东集团东兴化工有限责任公司 | Novel VCM compression process device |
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| CN102901191A (en) * | 2012-10-26 | 2013-01-30 | 江苏兆胜空调有限公司 | System and method for controlling marine module water chilling unit |
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| CN107131118B (en) * | 2017-05-02 | 2019-01-04 | 辽宁工程技术大学 | A kind of pressure fan group linkage mixed control method |
| CN107131118A (en) * | 2017-05-02 | 2017-09-05 | 辽宁工程技术大学 | A kind of pressure fan group linkage hybrid control system and method |
| CN110617205A (en) * | 2018-06-19 | 2019-12-27 | 中国石油集团西部管道有限责任公司 | Remote automatic control system of natural gas long-distance pipeline compressor unit |
| CN109814374A (en) * | 2019-01-30 | 2019-05-28 | 重庆江增船舶重工有限公司 | A kind of automatic joint debugging system and its control method of more air blower units |
| CN110617207A (en) * | 2019-09-18 | 2019-12-27 | 长兴旗滨玻璃有限公司 | Automatic control method, device and system for air compressor and computer readable 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 |
| CN111692087A (en) * | 2020-07-08 | 2020-09-22 | 中国船舶电站设备有限公司 | Low-pressure control system of LNG (liquefied Natural gas) supply unit |
| CN115414772A (en) * | 2022-08-30 | 2022-12-02 | 内蒙古伊东集团东兴化工有限责任公司 | Novel VCM compression process device |
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Address after: 222000 No. 42, Hailian East Road, Xinpu District, Lianyungang City, Jiangsu Province Patentee after: China Shipbuilding Digital Information Technology Co.,Ltd. Address before: 222000 No. 42, Hailian East Road, Xinpu District, Lianyungang City, Jiangsu Province Patentee before: CSIC Information Technology Co.,Ltd. |