CN106089786A - The control method of compressor bank surge and control system - Google Patents
The control method of compressor bank surge and control system Download PDFInfo
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- CN106089786A CN106089786A CN201610402549.2A CN201610402549A CN106089786A CN 106089786 A CN106089786 A CN 106089786A CN 201610402549 A CN201610402549 A CN 201610402549A CN 106089786 A CN106089786 A CN 106089786A
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- surge
- compressor bank
- control
- compressor
- current waveform
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/02—Surge control
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The invention discloses control method and the control system of a kind of compressor bank surge, wherein, control method includes: obtain current waveform when compressor bank is run；Judge whether compressor bank occurs surge according to current waveform；If compressor bank generation surge, then control compressor bank and start Anti-surge Control.The control method of the compressor bank surge of the embodiment of the present invention can reduce compressor bank and actually occur the number of times of surge, promotes the reliability of compressor bank, improves the life-span of compressor bank.
Description
Technical field
The present invention relates to Compressor Technology field, be specifically related to the control method of a kind of compressor bank surge and control system
System.
Background technology
In correlation technique, surge control logic, mainly by the guide vane opening correction pressure ratio that compressor bank is current, calculates
One critical frequency.The actual frequency of this critical frequency and compressor bank are compared, thus reaches to prevent and treat compressor bank and breathe heavily
The purpose shaken, its shortcoming is as follows:
1) deviation of pressure transducer can affect the calculating of critical frequency of compressor bank；
2) cannot judge that compressor bank the most really occurs surge phenomenon；
3), when compressor bank really occurs surge, compressor bank cannot be protected.
Summary of the invention
It is contemplated that one of technical problem solved the most to a certain extent in above-mentioned technology.To this end, the present invention
First purpose is to propose the control method of a kind of compressor bank surge.The method can reduce compressor bank and actually occur and breathe heavily
The number of times shaken, promotes the operational reliability of compressor bank, improves the service life of compressor bank.
Second object of the present invention is to propose the control system of a kind of compressor bank surge.
For reaching above-mentioned purpose, the embodiment of first aspect present invention proposes the controlling party of a kind of compressor bank surge
Method, comprises the following steps: obtain current waveform when compressor bank is run；Described compressor bank is judged according to described current waveform
Whether there is surge；If described compressor bank generation surge, then control described compressor bank and start Anti-surge Control.
The control method of the compressor bank surge of the embodiment of the present invention, current wave when running by obtaining compressor bank
Shape, and judge whether compressor bank occurs surge according to current waveform, and then when compressor bank generation surge, control compressor
Group starts Anti-surge Control, thereby, it is possible to reduce compressor bank to actually occur the number of times of surge, the operation promoting compressor bank can
By property, improve the service life of compressor bank.
It addition, the control method of compressor bank surge according to the above embodiment of the present invention can also have following additional
Technical characteristic:
According to one embodiment of present invention, described control described compressor bank startup Anti-surge Control includes: according to institute
The number of times of compressor bank generation surge described in current waveform when stating compressor bank generation surge and predetermined current waveshape；Sentence
Whether the number of times of described compressor bank generation surge in Preset Time that breaks reaches preset times；If it is described in Preset Time
The number of times of compressor bank generation surge reaches described preset times, then control described compressor bank and shut down.
According to one embodiment of present invention, described judge whether described compressor bank breathes heavily according to described current waveform
Shake and include: if the amplitude of described current waveform changes, and changing value is more than or equal to predetermined threshold value, then judge described pressure
Contracting unit generation surge；If the amplitude of described current waveform does not change, or the amplitude of described current waveform occurs
Change, and changing value is less than described predetermined threshold value, then judge that described compressor bank does not occur surge.
According to one embodiment of present invention, described control described compressor bank startup Anti-surge Control also includes: if
In Preset Time, the number of times of described compressor bank generation surge is less than described preset times, then control compressor and adjust operation frequency
Rate, to eliminate described compressor bank surge.
According to one embodiment of present invention, described control method, also include: if described compressor bank is not breathed heavily
Shake, then shield described Anti-surge Control.
For reaching above-mentioned purpose, the embodiment of second aspect present invention proposes the control system of a kind of compressor bank surge
System, including: acquisition module, for obtaining current waveform when compressor bank is run；Judge module, for according to described current wave
Shape judges whether described compressor bank occurs surge；Control module, for when described compressor bank generation surge, controls described
Compressor bank starts Anti-surge Control.
The control system of the compressor bank surge of the embodiment of the present invention, is obtained when compressor bank is run by acquisition module
Current waveform, and judge whether compressor bank occurs surge by judge module according to current waveform, and then pass through control module
When compressor bank generation surge, control compressor bank and start Anti-surge Control, actually occur thereby, it is possible to reduce compressor bank
The number of times of surge, promotes the operational reliability of compressor bank, improves the service life of compressor bank.
It addition, the control system of compressor bank surge according to the above embodiment of the present invention can also have following additional
Technical characteristic:
According to one embodiment of present invention, described control module includes: computing unit, for according to described compressor bank
The number of times of compressor bank generation surge described in current waveform when there is surge and predetermined current waveshape；Judging unit, uses
In judging whether the number of times of described compressor bank generation surge reaches preset times in Preset Time；Control unit, for working as
When the number of times of described compressor bank generation surge reaches described preset times in Preset Time, control described compressor bank and stop
Machine.
According to one embodiment of present invention, described judge module specifically for: described current waveform amplitude occur
Change, and when changing value is more than or equal to predetermined threshold value, it is judged that described compressor bank generation surge；Shaking of described current waveform
Width does not change, or the amplitude of described current waveform changes, and when changing value is less than described predetermined threshold value, it is judged that
There is not surge in described compressor bank.
According to one embodiment of present invention, described control unit is additionally operable to: when compressor bank described in Preset Time
When occurring the number of times of surge less than described preset times, control compressor and adjust running frequency, breathe heavily eliminating described compressor bank
Shake.
According to one embodiment of present invention, described control system, also include: shroud module, at described compressor
When group does not occur surge, shield described Anti-surge Control.
Accompanying drawing explanation
Above-mentioned and/or the additional aspect of the present invention and advantage are from combining the accompanying drawings below description to embodiment and will become
Substantially with easy to understand, wherein:
Fig. 1 is the flow chart of the control method of compressor bank surge according to embodiments of the present invention；
Fig. 2 is the schematic diagram of the current waveform of the compressor bank of one embodiment of the invention；
Fig. 3 is the schematic diagram of the current waveform of the compressor bank of another embodiment of the present invention；
Fig. 4 is the flow chart of the control method of compressor bank surge according to an embodiment of the invention；
Fig. 5 is the structured flowchart of the control system of compressor bank surge according to embodiments of the present invention；
Fig. 6 is the structured flowchart of the control system of compressor bank surge according to an embodiment of the invention；
Fig. 7 is the structured flowchart of the control system of compressor bank surge in accordance with another embodiment of the present invention.
Detailed description of the invention
Embodiments of the invention are described below in detail, and the example of described embodiment is shown in the drawings, the most from start to finish
Same or similar label represents same or similar element or has the element of same or like function.Below with reference to attached
The embodiment that figure describes is exemplary, it is intended to is used for explaining the present invention, and is not considered as limiting the invention.
Below with reference to the accompanying drawings control method and the control system of the compressor bank surge of the embodiment of the present invention are described.
Fig. 1 is the flow chart of the control method of compressor bank surge according to an embodiment of the invention.As it is shown in figure 1,
The control method of this compressor bank surge includes:
S101, obtains current waveform when compressor bank is run.
According to current waveform, S102, judges whether compressor bank occurs surge.
Specifically, if the amplitude of current waveform changes, and changing value is more than or equal to predetermined threshold value, then judge pressure
Contracting unit generation surge；If the amplitude of current waveform does not change, or the amplitude of current waveform changes, and becomes
Change value is less than predetermined threshold value, then judge that compressor bank does not occur surge.
Specifically, as shown in Figure 2 and Figure 3, when compressor bank is properly functioning, the amplitude of current waveform is A1, works as current wave
When the amplitude of shape becomes A2, compare the size of A1 and A2, if (A2-A1) is more than predetermined threshold value, then judge that compressor bank is sent out
Raw surge.
Alternatively, in one embodiment of the invention, predetermined threshold value can be compressor bank properly functioning time current wave
The 60% of shape amplitude, as shown in Figure 2 and Figure 3, is A1*60%.
S103, if compressor bank generation surge, then controls compressor bank and starts Anti-surge Control.
In one embodiment of the invention, as shown in Figure 4, above-mentioned steps S103 may include that
S1031, occurs according to current waveform during compressor bank generation surge and predetermined current waveshape compressor bank
The number of times of surge.
S1022, it is judged that whether the number of times in Preset Time inner compressor group generation surge reaches preset times.
Alternatively, preset times can be 4 times.
S1033, if the number of times in Preset Time inner compressor group generation surge reaches preset times, then controls compressor
Group is shut down.
Specifically, in one embodiment of the invention, as it is shown on figure 3, this period can be Preset Time, at this
In the section time, the amplitude variations of compressor bank current waveform 4 times, reach preset times 4 times, then control compressor bank and shut down.
It is understood that the number of times in Preset Time inner compressor group generation surge is the most, surge is the most violent, is more difficult to
Adjusted by frequency or relative program controls to eliminate surge.When reaching default at Preset Time inner compressor group generation surge number of times
During number of times, it is impossible to adjusted by frequency and program is controlled eliminating surge, the most now control compressor bank and shut down.
Further, in one embodiment of the invention, as shown in Figure 4, above-mentioned steps S103 can also include:
S1034, if the number of times in Preset Time inner compressor group generation surge is less than preset times, then controls compressor
Adjust running frequency, to eliminate compressor bank surge.
Specifically, in one embodiment of the invention, as in figure 2 it is shown, this period can be Preset Time, at this
In the section time, the amplitude variations of compressor bank current waveform 2 times, it is not reaching to preset times 4 times, then controls compressor and adjust
Running frequency, to eliminate compressor bank surge.
It is understood that the number of times in Preset Time inner compressor group generation surge is the most, surge is the most violent, is more difficult to
Adjusted by frequency or relative program controls to eliminate surge.When being not reaching at Preset Time inner compressor group generation surge number of times
When preset times, i.e. compressor bank occur slight surge, can be adjusted by frequency and program is controlled eliminating surge.
During it should be noted that compressor bank occurs slight surge, can be occurred according to compressor bank by pre-set programs
The reason of surge controls accordingly, and this pre-set programs can be, but not limited to be to control compressor to adjust running frequency.
In one embodiment of the invention, if compressor bank does not occur surge, then Anti-surge Control is shielded, to carry
The efficiency that the reliability of high compressor group system control and compressor unit system control.
The control method of the compressor bank surge of the embodiment of the present invention, current wave when running by obtaining compressor bank
Shape, and judge whether compressor bank occurs surge according to current waveform, and then when compressor bank occurs slight surge, by frequency
The programme-control such as rate adjustment are to eliminate compressor bank surge, and when compressor bank occurs violent surge, control compressor bank
Shut down, thereby, it is possible to reduce compressor bank to actually occur the number of times of surge, promote the operational reliability of compressor bank, improve pressure
The service life of contracting unit.
Fig. 5 is the structured flowchart of the control system of the compressor bank surge of one embodiment of the invention.As it is shown in figure 5, should
The control system of compressor bank surge includes: acquisition module 10, judge module 20 and control module 30.
Wherein, acquisition module 10 is for obtaining current waveform when compressor bank is run.
According to current waveform, judge module 20 is for judging whether compressor bank occurs surge.
Specifically, the amplitude at current waveform changes, and when changing value is more than or equal to predetermined threshold value, it is judged that compression
Unit generation surge；Amplitude at current waveform does not change, or the amplitude of current waveform changes, and changing value
During less than predetermined threshold value, it is judged that compressor bank does not occur surge.
Specifically, as shown in Figure 2 and Figure 3, when compressor bank is properly functioning, the amplitude of current waveform is A1, works as current wave
When the amplitude of shape becomes A2, compare the size of A1 and A2, if (A2-A1) is more than predetermined threshold value, then judge that compressor bank is sent out
Raw surge.
Alternatively, in one embodiment of the invention, predetermined threshold value can be compressor bank properly functioning time current wave
The 60% of shape amplitude, as shown in Figure 2 and Figure 3, is A1*60%.
Control module 30, for when compressor bank generation surge, controls compressor bank and starts Anti-surge Control.
Specifically, in one embodiment of the invention, as shown in Figure 6, control module 30 includes computing unit 31, judges
Unit 32 and control unit 33.
Wherein, computing unit 31 is for according to current waveform during compressor bank generation surge and predetermined current waveshape
The number of times of compressor bank generation surge.
Judging unit 32 is for judging whether the number of times in Preset Time inner compressor group generation surge reaches preset times.
Alternatively, preset times can be 4 times.
Control unit 33, for when reaching preset times at the number of times of Preset Time inner compressor group generation surge, controls
Compressor bank is shut down.
Specifically, in one embodiment of the invention, as it is shown on figure 3, this period can be Preset Time, at this
In the section time, the amplitude variations of compressor bank current waveform 4 times, reach preset times 4 times, then control unit 33 controls compression
Compressor emergency shutdown.
It is understood that the number of times in Preset Time inner compressor group generation surge is the most, surge is the most violent, is more difficult to
Adjusted by frequency or relative program controls to eliminate surge.When reaching default at Preset Time inner compressor group generation surge number of times
During number of times, it is impossible to adjusted by frequency and program is controlled eliminating surge, then control compressor now by control unit 33
Group is shut down.
In one embodiment of the invention, control unit 33 is additionally operable to when in Preset Time inner compressor group generation surge
Number of times less than preset times time, control compressor adjust running frequency, to eliminate compressor bank surge.
Specifically, in one embodiment of the invention, as in figure 2 it is shown, this period can be Preset Time, at this
In the section time, the amplitude variations of compressor bank current waveform 2 times, be not reaching to preset times 4 times, then control unit 33 controls
Compressor adjusts running frequency, to eliminate compressor bank surge.
It is understood that the number of times in Preset Time inner compressor group generation surge is the most, surge is the most violent, is more difficult to
Adjusted by frequency or relative program controls to eliminate surge.When being not reaching at Preset Time inner compressor group generation surge number of times
When preset times, i.e. compressor bank occur slight surge, can be adjusted by frequency and program is controlled eliminating surge.
During it should be noted that compressor bank occurs slight surge, can be occurred according to compressor bank by pre-set programs
The reason of surge controls accordingly, and this pre-set programs can be, but not limited to be to control compressor to adjust running frequency.
In one embodiment of the invention, as it is shown in fig. 7, this control system can also include shroud module 40.Wherein,
Shroud module 40, for when compressor bank does not occur surge, shields Anti-surge Control, to improve compressor unit system control
Reliability and compressor unit system control efficiency.
The control system of the compressor bank surge of the embodiment of the present invention, is obtained when compressor bank is run by acquisition module
Current waveform, and judge whether compressor bank occurs surge by judge module according to current waveform, and then send out in compressor bank
During raw slight surge, by programme-control such as frequency adjustment to eliminate compressor bank surge, and occur acutely in compressor bank
During surge, control compressor bank by control unit and shut down, thereby, it is possible to reduce compressor bank to actually occur the number of times of surge,
Promote the operational reliability of compressor bank, improve the service life of compressor bank.
In describing the invention, it is to be understood that term " " center ", " longitudinally ", " laterally ", " length ", " width ",
" thickness ", " on ", D score, "front", "rear", "left", "right", " vertically ", " level ", " top ", " end " " interior ", " outward ", " up time
Pin ", " counterclockwise ", " axially ", " radially ", the orientation of the instruction such as " circumferential " or position relationship be based on orientation shown in the drawings or
Position relationship, is for only for ease of the description present invention and simplifies description rather than instruction or imply that the device of indication or element must
Must have specific orientation, with specific azimuth configuration and operation, be therefore not considered as limiting the invention.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include at least one this feature.In describing the invention, " multiple " are meant that at least two, such as two, three
Individual etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, term " install ", " being connected ", " connection ", " fixing " etc.
Term should be interpreted broadly, and connects for example, it may be fixing, it is also possible to be to removably connect, or integral；Can be that machinery connects
Connect, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, in can being two elements
The connection in portion or the interaction relationship of two elements, unless otherwise clear and definite restriction.For those of ordinary skill in the art
For, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score permissible
It is that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height less than second feature.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show
Example " or the description of " some examples " etc. means to combine this embodiment or example describes specific features, structure, material or spy
Point is contained at least one embodiment or the example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.And, the specific features of description, structure, material or feature can be in office
One or more embodiments or example combine in an appropriate manner.Additionally, in the case of the most conflicting, the skill of this area
The feature of the different embodiments described in this specification or example and different embodiment or example can be tied by art personnel
Close and combination.
Although above it has been shown and described that embodiments of the invention, it is to be understood that above-described embodiment is example
Property, it is impossible to being interpreted as limitation of the present invention, those of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, revises, replaces and modification.
Claims (10)
1. the control method of a compressor bank surge, it is characterised in that comprise the following steps:
Obtain current waveform when compressor bank is run；
Judge whether described compressor bank occurs surge according to described current waveform；
If described compressor bank generation surge, then control described compressor bank and start Anti-surge Control.
The control method of compressor bank surge the most according to claim 1, it is characterised in that the described compressor of described control
Group starts Anti-surge Control and includes:
Breathe heavily according to compressor bank described in current waveform during described compressor bank generation surge and predetermined current waveshape
The number of times shaken；
Judge whether the number of times of described compressor bank generation surge reaches preset times in Preset Time；
If the number of times of described compressor bank generation surge reaches described preset times in Preset Time, then control described compression
Compressor emergency shutdown.
The control method of compressor bank surge the most according to claim 1, it is characterised in that described according to described current wave
Shape judges whether described compressor bank occurs surge to include:
If the amplitude of described current waveform changes, and changing value is more than or equal to predetermined threshold value, then judge described compression
Unit generation surge；
If the amplitude of described current waveform does not change, or the amplitude of described current waveform changes, and change
Value less than described predetermined threshold value, then judges that described compressor bank does not occur surge.
The control method of compressor bank surge the most according to claim 2, it is characterised in that the described compressor of described control
Group starts Anti-surge Control and also includes:
If the number of times of described compressor bank generation surge is less than described preset times in Preset Time, then controls compressor and adjust
Whole running frequency, to eliminate described compressor bank surge.
The control method of compressor bank surge the most according to claim 1, it is characterised in that also include:
If described compressor bank does not occur surge, then shield described Anti-surge Control.
6. the control system of a compressor bank surge, it is characterised in that including:
Acquisition module, for obtaining current waveform when compressor bank is run；
According to described current waveform, judge module, for judging whether described compressor bank occurs surge；
Control module, for when described compressor bank generation surge, controls described compressor bank and starts Anti-surge Control.
The control system of compressor bank surge the most according to claim 6, it is characterised in that described control module includes:
Computing unit, for pressing according to described in current waveform during described compressor bank generation surge and predetermined current waveshape
The number of times of contracting unit generation surge；
Judging unit, for judging whether the number of times of described compressor bank generation surge reaches preset times in Preset Time；
Control unit, is used for when the number of times of compressor bank generation surge described in Preset Time reaches described preset times,
Control described compressor bank to shut down.
The control system of compressor bank surge the most according to claim 6, it is characterised in that described judge module is specifically used
In:
Amplitude at described current waveform changes, and when changing value is more than or equal to predetermined threshold value, it is judged that described compressor
There is surge in group；
Amplitude at described current waveform does not change, or the amplitude of described current waveform changes, and changing value
During less than described predetermined threshold value, it is judged that described compressor bank does not occur surge.
The control system of compressor bank surge the most according to claim 7, it is characterised in that described control unit is also used
In:
When the number of times of compressor bank generation surge described in Preset Time is less than described preset times, controls compressor and adjust
Running frequency, to eliminate described compressor bank surge.
The control system of compressor bank surge the most according to claim 6, it is characterised in that also include:
Shroud module, for when described compressor bank does not occur surge, shields described Anti-surge Control.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610402549.2A CN106089786A (en) | 2016-06-08 | 2016-06-08 | The control method of compressor bank surge and control system |
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| CN201610402549.2A CN106089786A (en) | 2016-06-08 | 2016-06-08 | The control method of compressor bank surge and control system |
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| CN109488632A (en) * | 2018-11-07 | 2019-03-19 | 珠海格力电器股份有限公司 | Device control method, device and computer readable storage medium |
| CN113465113A (en) * | 2021-05-21 | 2021-10-01 | 宁波奥克斯电气股份有限公司 | Control method and device for low-temperature refrigeration of air conditioner and air conditioner |
| CN113944650A (en) * | 2020-07-16 | 2022-01-18 | 麦克维尔空调制冷(武汉)有限公司 | Control method and control device of compressor and heat exchange system |
| WO2022016866A1 (en) * | 2020-07-23 | 2022-01-27 | 清华大学 | Surge detection method for centrifugal compressor |
| CN114413457A (en) * | 2022-01-21 | 2022-04-29 | 清华大学 | Optimization control method and device for air conditioning system, electronic equipment and storage medium |
| WO2022222564A1 (en) * | 2021-04-20 | 2022-10-27 | 青岛海尔生物医疗科技有限公司 | Method and apparatus for controlling variable frequency compressor, variable frequency compressor, and temperature control device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109488632A (en) * | 2018-11-07 | 2019-03-19 | 珠海格力电器股份有限公司 | Device control method, device and computer readable storage medium |
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| CN113944650A (en) * | 2020-07-16 | 2022-01-18 | 麦克维尔空调制冷(武汉)有限公司 | Control method and control device of compressor and heat exchange system |
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| WO2022222564A1 (en) * | 2021-04-20 | 2022-10-27 | 青岛海尔生物医疗科技有限公司 | Method and apparatus for controlling variable frequency compressor, variable frequency compressor, and temperature control device |
| CN113465113A (en) * | 2021-05-21 | 2021-10-01 | 宁波奥克斯电气股份有限公司 | Control method and device for low-temperature refrigeration of air conditioner and air conditioner |
| CN113465113B (en) * | 2021-05-21 | 2022-06-28 | 宁波奥克斯电气股份有限公司 | Control method and device for low-temperature refrigeration of air conditioner and air conditioner |
| CN114413457A (en) * | 2022-01-21 | 2022-04-29 | 清华大学 | Optimization control method and device for air conditioning system, electronic equipment and storage medium |
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Application publication date: 20161109 |