CN103867446B - Method for anti-surge controlling of multi-stage compressing system - Google Patents
Method for anti-surge controlling of multi-stage compressing system Download PDFInfo
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- CN103867446B CN103867446B CN201310659897.4A CN201310659897A CN103867446B CN 103867446 B CN103867446 B CN 103867446B CN 201310659897 A CN201310659897 A CN 201310659897A CN 103867446 B CN103867446 B CN 103867446B
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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
- F04D27/0207—Surge control by bleeding, bypassing or recycling fluids
- F04D27/0215—Arrangements therefor, e.g. bleed or by-pass valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D19/00—Axial-flow pumps
- F04D19/02—Multi-stage pumps
-
- 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
- F04D27/0246—Surge control by varying geometry within the pumps, e.g. by adjusting vanes
-
- 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
- F04D27/0284—Conjoint control of two or more different functions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
- F04D29/584—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps cooling or heating the machine
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2210/00—Working fluids
- F05D2210/10—Kind or type
- F05D2210/12—Kind or type gaseous, i.e. compressible
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S415/00—Rotary kinetic fluid motors or pumps
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S417/00—Pumps
Abstract
Provided is a method for anti-surge controlling of a multi-stage compressing system. The multi-stage compressing system comprises a first-stage compressor to an N-stage compressor, a variable vane device installed on an inlet pipe connected with the first-stage compressor, a main pipe and a branch pipe installed on an outlet pipe connected with the N-stage compressor, and surge control valves installed on the branch pipe. The method comprises steps: through control of the variable vane device and at least one of the surge control valves, anti-surge controlling of the first-stage compressor is carried out; through control of the surge control valves, anti-surge controlling of the second-stage compressor to the N-stage compressor is carried out, wherein N is an integer which is equal to or more than 2.
Description
This application claims being submitted to Korea Spro 10-2012-0142320 of Korean Intellectual Property Office on December 7th, 2012
The rights and interests of state's patent application, the disclosure of the application is hereby incorporated by reference in its entirety.
Technical field
Exemplary embodiment is related to a kind of method for carrying out Anti-surge Control to multi-stage compression system.
Background technology
When turbo-compressor can not produce the pressure more than the pressure resistance of system, in turbo-compressor periodically
There is the backflow of fluid.This phenomenon is referred to as surge phenomenon.When there is surge phenomenon, periodically backflow causes fluid to fluid
The slight change of flow velocity and pressure.The flow velocity of fluid and the change of pressure cause mechanical vibration, so as to cause to bearing, impeller etc.
Damage.Surge phenomenon may reduce the performance of turbo-compressor and reduce the life-span of turbo-compressor.Therefore, turbo-compressor is controlled
The key point of machine may is that and prevent surge phenomenon.
In order to prevent the generation of surge phenomenon, by regulation line for surge being arranged in the performance map of Normal squeezing system and being made
Normal squeezing system is controlled with the regulation line for surge.
2005-226561 Japan patent applicant announces disclose one kind and are also set up by not only arranging regulation line for surge
Surge control area, and the technology of the generation for controlling to drive point to be not present in preventing surge phenomenon in surge control area.
The content of the invention
One or more exemplary embodiments provide a kind of method for carrying out Anti-surge Control to multi-stage compression system.
According to the one side of exemplary embodiment, there is provided a kind of side that Anti-surge Control is carried out to multi-stage compression system
Method, wherein, the multi-stage compression system include first order compressor to N level compressors, installed in be connected to the first order compression
The variable blading of the inlet duct of machine, the main pipeline installed in the outlet conduit for being connected to N level compressors and a spool
Road and the surge control valve installed in branch pipeline, methods described includes：At based on the compression with first order compressor
Manage at least one of adiabatic head value control variable blading and surge control valve of correlation to enter first order compressor
Row Anti-surge Control；By waiting temperature pressure head value control based on related to the compression process of high stage compressor to N level compressors
Surge control valve processed carrying out Anti-surge Control to N levels compressor to high stage compressor, wherein, N is represented and is equal to or more than
The integer of " 2 ".
Can pass throughTo determine adiabatic head value, wherein, HadiabaticRepresent adiabatic pressure
Header value, γ represents the specific heat ratio of the fluid that will be compressed, and R represents gas constant, and T represents the temperature of the porch of first order compressor
Degree, PrExpression passes throughAnd the pressure ratio for determining.
Anti-surge Control can be carried out to first order compressor by following steps：The first of predetermined first order compressor
Regulation line for surge and at least one of control variable blading and surge control valve so that the compression with first order compressor
Process value of the related adiabatic head value without departing from the first regulation line for surge when first order compressor is driven.
H can be passed throughisothermal=RT1n(Pr) the temperature pressure head value such as determining, wherein, HisothermalThe temperature pressure head values such as expression, R is represented
Gas constant, T represents the temperature of the porch of high stage compressor, PrExpression passes through
And the pressure ratio for determining.
Anti-surge Control can be carried out to N levels compressor to high stage compressor by following steps：Predefine second
Second regulation line for surge of level compressor to N level compressors simultaneously controls surge control valve so that with high stage compressor to N
The compression of level compressor is processed and related waits temperature pressure head value less than when high stage compressor is driven to N levels compressor
The value of the second regulation line for surge.
Multi-stage compression system may also include：First pressure sensor, for measuring the pressure of the porch of first order compressor
Power；And first temperature sensor, for measuring the temperature of the porch of first order compressor.
Multi-stage compression system may also include：Second pressure sensor, for measuring the pressure of the porch of high stage compressor
Power；And second temperature sensor, for measuring the temperature of the porch of high stage compressor.
Multi-stage compression system may also include：3rd pressure transducer, for measuring the pressure in the exit of N level compressors
Power.
At least one intercooler may be arranged at first order compressor between N level compressors.
Description of the drawings
From the description below in conjunction with accompanying drawing to embodiment, these and/or other aspect will be clear from and be easier to reason
Solution, wherein：
Fig. 1 is the schematic concepts figure of the multi-stage compression system according to exemplary embodiment；
Fig. 2 is the curve chart for performance map, it is schematically shown that with to the multi-stage compression according to exemplary embodiment
System performs the first related regulation line for surge of the first Anti-surge Control；
Fig. 3 is the curve chart for performance map, it is schematically shown that with to the multi-stage compression according to exemplary embodiment
System performs the second related regulation line for surge of the second Anti-surge Control.
Specific embodiment
Embodiment is reference will now be made in detail to now, and its example is illustrated in the accompanying drawings, wherein, identical reference number is indicated all the time
Identical element.In this, the present embodiment can have different forms, and should not be construed as limited to here and explain
The description stated.Therefore, by referring to accompanying drawing, embodiment is only described below to explain many aspects of this description.As made at this
, when such as "...... at least one" be expressed in string element before when, statement modification permutation element and not
It is the discrete component in the modification row.
Fig. 1 is the schematic concepts figure of the multi-stage compression system 100 according to exemplary embodiment.Fig. 2 is for performance map
Curve chart, it is schematically shown that with to according to the multi-stage compression system of exemplary embodiment perform the first Anti-surge Control phase
The first regulation line for surge for closing.Fig. 3 is the curve chart for performance map, it is schematically shown that with to according to exemplary embodiment
Multi-stage compression system perform the second related regulation line for surge of the second Anti-surge Control.
With reference to Fig. 1, multi-stage compression system 100 includes that first order compressor 110, the high stage compressor 120, third level compress
Machine 130, fourth stage compressor 140, intercooler unit 150, variable blading（variable vane device）
160th, surge control valve 170, first pressure sensor 181, second pressure sensor 182, the 3rd pressure transducer 183, first
Temperature sensor 184, second temperature sensor 185, inlet duct 191, outlet conduit 192, main pipeline 193, branch pipeline 194
With control device 195.
Although in the disclosure, for the ease of explaining, by what is compressed according to the multi-stage compression system 100 of present example
Fluid is by taking air as an example, but the type of fluid that multi-stage compression system 100 can compress is not limited to air.For example, will be multistage
The fluid of the compression of compressibility 100 can be noble gases, refrigerant gas, steam etc..
First order compressor 110, high stage compressor 120, third level compressor 130 and fourth stage compressor 140 are equal
Including fluid intake and the turbo-compressor of fluid issuing.Compression pressure according to multi-stage compression system 100 the first order extremely
The order of the fourth stage becomes big.That is, fluid is compressed with minimum pressure by first order compressor 110, and with highest pressure
Power is compressed by fourth stage compressor 140.
According to the multi-stage compression system 100 of present example be include first order compressor 110, high stage compressor 120,
The level Four compressibility of third level compressor 130 and fourth stage compressor 140, but the present embodiment not limited to this.That is, root
Quantity according to the compressor of the multi-stage compression system of the present embodiment is unrestricted.For example, according to the multi-stage compression of exemplary embodiment
System can be configured to include ten grades of compressibilities of ten compressors.
Intercooler unit 150 is disposed between compressor 110 to 140 to perform intercooling.
Intercooler unit 150 includes cold in the middle of the first intercooler 151, the second intercooler 152 and the 3rd
But device 153.First intercooler 151 is arranged between first order compressor 110 and high stage compressor 120.In the middle of second
Cooler 152 is arranged between high stage compressor 120 and third level compressor 130.3rd intercooler 153 is arranged in
Between three-stage blower 130 and fourth stage compressor 140.
Although in the present example, in the intercooler 153 of the first intercooler 151 to the 3rd is arranged in
Between adjacent compressor among compressor 110 to 140, but the present embodiment not limited to this.According to exemplary embodiment, Duo Gezhong
Between cooler may be arranged between the adjacent compressor among compressor 110 to 140.
Variable blading 160 is arranged on the inlet duct 191 of the fluid intake for being connected to first order compressor 110.
In variable blading 160, variable blade（It is not shown）With variable blade driving apparatus（It is not shown）It is mounted
To adjust the degree of opening of variable blading 160, to control the flow velocity of the fluid for flowing into variable blading 160.It is known
Inlet guide vance（IGV）It is used as variable blading 160.Therefore, in the present example, it is assumed that variable blade is filled
It is the known IGV being electronically controlled to put 160.
Outlet conduit 192 is connected to the fluid issuing of fourth stage compressor 140, and outlet conduit 192 is connected to supervisor
Road 193 and branch pipeline 194.Main pipeline 193 is to be discharged into another device by the fluid that multi-stage compression system 100 compresses（It is all
Such as combustor（It is not shown））Via pipeline.Surge control valve 170 is installed in branch pipeline 194.
Surge control valve 170 is installed in branch pipeline 194.General pilot valve is used as surge control valve
170。
Under the control of control device 195 or the manually handle that passes through user, surge control valve 170 be opened or closed with
Control surge.In other words, when surge control valve 170 is opened, a part of fluid of outlet conduit 192 is flow through via a spool
Road 194 passes through surge control valve 170.Then, the stream in the reduced pressure and multi-stage compression system 100 at outlet conduit 192
The flow velocity Q of body increases, and thus reduces the generation of surge.
Air is discharged into by the gas of surge control valve 170.According to present example, by surge control valve 170
Gas be air and therefore air can be discharged into.If however, the gas of compression is to be discharged into air
Harmful gass, the then gas for compressing can return to inlet duct 191, or make the gas of compression via single bypass pipe（Not
Illustrate）Flow into recycling can（retrieval tank）（It is not shown）.
First pressure sensor 181 is configured to measure the inflow entrance of first order compressor 110（flow inlet）Place
The result of measurement pressure is simultaneously sent to control device 195, and first pressure sensor 181 is installed in inlet duct by pressure
At 191.
Specifically, first pressure sensor 181 be disposed in variable blading 160 and first order compressor 110 it
Between pipeline.Known electronic pressure transmitter is used as first pressure sensor 181.
Variable blading 160 and first order compression are disposed according to the first pressure sensor 181 of present example
At pipeline between machine 110, but the present embodiment not limited to this.That is, being sensed according to the first pressure of exemplary embodiment
Device 181 may be mounted to that the pipeline before variable blading 160.
The pressure of the porch of the measurement high stage compressor 120 of second pressure sensor 182（Or first order compressor 110
Exit pressure）And the result of measurement pressure is sent to into control device 195, second pressure sensor 182 is installed in
Pipeline between first intercooler 151 and high stage compressor 120.
Known electronic pressure transmitter is used as second pressure sensor 182.
First intercooler 151 and second level pressure are disposed according to the second pressure sensor 182 of present example
At pipeline between contracting machine 120, but the present embodiment not limited to this.For example, due to being analyzed the intercooler of period first
The decline of 151 pressure is generally very low so that can be ignored, therefore according to the second pressure sensor of exemplary embodiment
At pipeline between 182 fluid issuings that may be mounted to that first order compressor 110 and the first intercooler 151.
The pressure in the exit of the measurement of the 3rd pressure transducer 183 fourth stage compressor 140 and being installed in is connected to the
At the outlet conduit 192 of the fluid issuing of four-stage compressor 140.
Known electronic pressure transmitter is used as the 3rd pressure transducer 183.
According to present example, first pressure sensor 181, the pressure transducer 183 of second pressure sensor 182 and the 3rd
It is the known electronic pressure transmitter that measurement result is sent automatically to control device 195, but the present embodiment not limited to this.
That is, the first pressure sensor 181, the pressure transducer of second pressure sensor 182 and the 3rd according to exemplary embodiment
183 can be mechanical pressure sensor.In this case, user can obtain measurement result from these sensors, and based on institute
State measurement result and Anti-surge Control is manually performed by his/her.
The temperature of the porch of the measurement of the first temperature sensor 184 first order compressor 110, and by the result of measurement temperature
Control device 195 is sent to, and the first temperature sensor 184 is installed at inlet duct 191.
In detail, the first temperature sensor 184 is arranged between variable blading 160 and first order compressor 110
Pipeline at.Known electronic temperature transmitter is used as the first temperature sensor 184.
Variable blading 160 and first order compression are disposed according to the first temperature sensor 184 of present example
At pipeline between machine 110, but the present embodiment not limited to this.For example, according to the first temperature sensor 184 of exemplary embodiment
May be mounted to that the pipeline before variable blading 160.
The temperature of the porch of the measurement high stage compressor 120 of second temperature sensor 185 and by the result of measurement temperature
Control device 195 is sent to, and second temperature sensor 185 is installed in the first intercooler 151 and second level compression
At pipeline between machine 120.
Known electronic temperature transmitter is used as second temperature sensor 185.
According to present example, the first temperature sensor 184 and second temperature sensor 185 are measurement temperatures and will measure
The result of temperature is sent automatically to the electronic temperature transmitter of control device 195, but the present embodiment not limited to this.That is,
Can be mechanical temperature sensor according to the first temperature sensor 184 of exemplary embodiment and second temperature sensor 185.
In this case, user can be obtained measurement result and be manually performed by his/her based on measurement result anti-from these sensors
Surge control.
Control device 195 is from the pressure transducer 183 of first pressure sensor 181 to the 3rd and the first temperature sensor
184 and second temperature sensor 185 receive measurement result, calculate pressure head value（value of head）To perform Anti-surge Control,
The pressure head value and the value of the regulation line for surge for pre-entering are compared, and based on comparative result control variable blading
160 and surge control valve 170.For this purpose, control device 195 includes integrated circuit（IC）With circuit arrangement is with data storage and performs
Arithmetical operation.
The anti-surge control method to performing according to the multi-stage compression system 100 of exemplary embodiment will now be described.
The related to the compression process of first order compressor 110 is included according to the anti-surge control method of present example
One Anti-surge Control, and process with the compression of high stage compressor 120, third level compressor 130 and fourth stage compressor 140
The second related Anti-surge Control.
First, the principle of the compression similar to adiabatic compression process is performed based on first order compressor 110 to perform first
Anti-surge Control.
Specifically, the first Anti-surge Control is performed based on the adiabatic head value of first order compressor 110.Here,
The adiabatic head value of stage compressor 110 can be calculated by equation 1：
[equation 1]
Wherein, " Hadiabatic" adiabatic head value is represented, " γ " is represented gas compressed（It is empty in present example
Gas）Specific heat ratio（specific heat ratio）, " R " represents gas constant, and " T " represents first order compressor 110
The temperature of porch, the temperature can be the value measured by the first temperature sensor 184.
In equation 1, " Pr" represent pressure ratio and can be calculated by equation 2：
[equation 2]
In equation 2, the value that measured by first pressure sensor 181 can be used as the entrance of first order compressor 110
The pressure at place simultaneously uses the value measured by second pressure sensor 182 to come as the pressure in the exit of first order compressor 110
Calculate pressure ratio Pr。
Because intercooler unit 150 is including the intercooler 153 of the first intercooler 151 to the 3rd, therefore the
The compression process of split-compressor 120, third level compressor 130 and fourth stage compressor 140 and isotherm compression process total body phase
Seemingly.Therefore, the second Anti-surge Control is performed based on isotherm compression process.
That is, at the compression based on high stage compressor 120, third level compressor 130 and fourth stage compressor 140
Reason is considered second compression and processes（SC）And similarly perform the second compression with isotherm compression process to process（SC）Think
Method is performing the second Anti-surge Control.That is, when middle chiller unit 150 is used, the second compression is processed（SC）
Become and isotherm compression process（The compression of such as Ericsson cycle is processed）It is similar, wherein, the second compression is processed（SC）By
Process, the process of third level compressor 130 and the process of fourth stage compressor 140 composition of split-compressor 120.That is, second
Compression is processed（SC）It is considered single process, wherein, in the single processing procedure, high stage compressor 120 is to the fourth stage
Compressor 140 is operated.
Therefore, based in the second compression process（SC）Used in wait temperature pressure head value performing the second Anti-surge Control.This
In, the temperature pressure head value such as can calculate by equation 3：
[equation 3]
Hisothermal=RT1n(Pr)
Wherein, " Hisothermal" the temperature pressure head value such as represent, " R " represents that gas constant and " T " represent high stage compressor
The temperature of 120 porch, wherein, the temperature can be the value measured by second temperature sensor 185.
In equation 3, " Pr" represent pressure ratio and can be calculated by equation 4：
[equation 4]
In equation 4, the value that measured by second pressure sensor 182 can be used as the entrance of high stage compressor 120
The pressure at place simultaneously uses the value measured by the 3rd pressure transducer 183 to come as the pressure in the exit of fourth stage compressor 140
Calculate pressure ratio Pr.Here, using the pressure in the exit of fourth stage compressor 140 the reason for, is because according to present example
The afterbody of multi-stage compression system 100 be the fourth stage.If afterbody is N levels, using going out for N level compressors
The pressure at mouthful place is calculating in above-mentioned equation 3 pressure ratio P of expressionr.Here, N represents the integer equal to or more than " 2 ".
The process for performing the first Anti-surge Control and the second Anti-surge Control below will be described in further detail.
The manufacturer of multi-stage compression system 100 or designer for the multi-stage compression system 100 by carrying out theoretical point
Analysis and many experiments are arranging the surge line that surge occurs and remaining by arranging in the surge line about 10% safety in advance
Measure to arrange regulation line for surge.Here, regulation line for surge is set by arranging about 10% safe clearance in surge line, but
The safe clearance of permission can change according to the demand from designer or user.
Specifically, in the compression of first order compressor 110 is processed, as shown in Figure 2, based on adiabatic head value come really
Fixed first surge line and the first regulation line for surge, and the value of these lines is stored in the data space of control device 195
（Memorizer）In.
Similarly, process in the second compression（SC）In, as shown in Figure 3, the second surge is determined based on grade temperature pressure head value
Line and the second regulation line for surge, and the value of these lines is stored in the data space of control device 195（Memorizer）In.
Multi-stage compression system 100 will now be described and consigns to user from manufacturer, be mounted and be powered to carrying out by user
The situation of operation.
When multi-stage compression system 100 is operated, to first order compressor 110, high stage compressor 120, third level pressure
Contracting machine 130 and fourth stage compressor 140 are powered, and these compressors are subsequently actuated to start compression.
Control device 195 from first pressure sensor 181, second pressure sensor 182, the 3rd pressure transducer 183,
One temperature sensor 184 and the real-time reception measurement result of second temperature sensor 185, and pressure head value is calculated to perform anti-surge control
System.
That is, in order to perform the first Anti-surge Control, control device 195 calculates thermal insulation using equation 1 and equation 2
Pressure head value Hadiabatic, and monitor adiabatic head value HadiabaticIt is whether identical with the value of first regulation line for surge of Fig. 2.As prison
The example of prosecutor method, from the value of the first regulation line for surge for pre-entering and storing the adiabatic head value of real-time calculating is deducted
Hadiabatic, and the result of subtraction becomes equal to the time point of " 0 " and is arranged to the first Anti-surge Control by the time being activated
Point.
Specifically, for example, when adiabatic head value H for calculating in real time as shown in Figure 2adiabaticWhen reaching point B from point A,
Control device 195 can determine that current point in time be the first Anti-surge Control by the time point being activated, and by using following sides
At least one of method is performing the first Anti-surge Control：Increase the method for the degree of opening of variable blading 160 and beat
The method for driving surge control valve 170, so as to prevent that surge occurs in first order compressor 110.
Here, operated when variable blading 160 to increase during its degree of opening, the flow velocity of fluid increases, and
Performance curve shifts to the right of the performance map of Fig. 2, so as to prevent that surge occurs in first order compressor 110.Work as surge control
When valve 170 is opened, the flow velocity of fluid also increases, and reduced pressure, so as to prevent being breathed heavily in first order compressor 110
Shake.
Additionally, in order to perform the second Anti-surge Control, the temperature pressure head such as control device 195 is calculated by using equation 3 and 4
Value Hisothermal, and monitor etc. temperature pressure head value HisothermalWhether the value of second regulation line for surge of Fig. 3 is equal to.As monitoring
The example of method, from the value of the second regulation line for surge for pre-entering grade temperature pressure head value H of real-time calculating is deductedisothermal, and
And the result of subtraction becomes equal to the time point of " 0 " and is arranged to the second Anti-surge Control by the time point being activated.
Specifically, for example, when as shown in Figure 3 wait temperature pressure head value HisothermalWhen reaching point D from point C, control device
195 can determine that current point in time be the second Anti-surge Control by the time point being activated, and by using open surge control valve
170 method performing the second Anti-surge Control, so as to prevent in high stage compressor 120, third level compressor 130 and the 4th
There is surge in level compressor 140.Here, when surge control valve 170 is opened, the flow velocity of fluid increases in these compressors
And pressure reduces, so as to prevent in high stage compressor 120, third level compressor 130 and fourth stage compressor 140
Surge.
Above-mentioned first Anti-surge Control and the second Anti-surge Control are performed together.Even if that is, in multi-stage compression
There is surge in only one compressor in the compressor 110 to 140 of system 100, the performance of multi-stage compression system 100 is also dropped
It is low.Therefore, Anti-surge Control should be done so that in any one in compressor 110 to 140 surge phenomenon does not occur.
According to present example, the program that the generation of the automatic detection surge phenomenon of control device 195 and basis are pre-entered
Perform Anti-surge Control, but the present embodiment not limited to this.That is, according to exemplary embodiment, user his/her can base
In from first pressure sensor 181, second pressure sensor 182, the 3rd pressure transducer 183, the and of the first temperature sensor 184
The measurement result that second temperature sensor 185 is received calculating pressure head value, by the value of result of calculation and predetermined regulation line for surge
It is compared, and by performing anti-asthma based on the manual control variable blading 160 of result of the comparison and surge control valve 170
Shake control.
Be described above includes first order compressor 110 to fourth stage compressor according to the conduct of present example
The multi-stage compression system 100 of 140 level Four compressibility.However, the series of multi-stage compression system 100 is for the ease of explanation
It is described as four and thus is not limited to four.That is, the series of multi-stage compression system 100 can be arranged to N（Here, N >=
2）And therefore multi-stage compression system 100 can include N number of compressor.In this case, the above of fourth stage compressor 140 is retouched
Stating can be applied directly to N level compressors.
As described above, according to present example, to the Anti-surge Control of multi-stage compression system 100 the first anti-asthma is divided into
Shake and control and the second Anti-surge Control.By the adiabatic head value control variable blading 160 based on first order compressor 110
The first Anti-surge Control is performed with least one of surge control valve 170.By being processed based on the second compression（SC）Etc.
Temperature and pressure header value controls surge control valve 170 to perform the second Anti-surge Control.Therefore, can be according to including for performing intercooling
Intercooler unit 150 multi-stage compression system 100 characteristic performing Anti-surge Control.Therefore, Anti-surge Control can
Performed stably and con vigore, so as to improve the performance of multi-stage compression system 100.
Additionally, according to present example, even if the series of multi-stage compression system 100 is larger, also can be many by being included within
Compressor in level compressibility 100 is divided into two groups to perform Anti-surge Control.Specifically, in N level multi-stage compression systems
In the case of, first order compressor can be classified as first group, and high stage compressor to N levels compressor can be classified as second
Group, can be to first group of Anti-surge Control of execution first and can be to second group of Anti-surge Control of execution second.Here, N >=2.At this
In the case of kind, even if the series of multi-stage compression system is larger, it is possible to use the sensor of minimum number simply performs anti-surge
Control, so as to save installation and management cost.
As described above, according to exemplary embodiment, the method that Anti-surge Control is carried out to multi-stage compression system can be to more
Level compressibility carries out stable Anti-surge Control.
It should be understood that exemplary embodiment described here only should be considered with descriptive meaning, rather than in order to
The purpose of restriction.The description of the feature or aspect in each embodiment generally should be considered to can be used in other embodiment
Other similar characteristics or aspect.
Although the one or more embodiments of the present invention with reference to Description of Drawings, those of ordinary skill in the art will
Understand, in the case of without departing from the spirit and scope of the present invention being defined by the claims, can here make form and details
On various changes.
Claims (9)
1. a kind of method that Anti-surge Control is carried out to multi-stage compression system, wherein, the multi-stage compression system includes the first order
Compressor is to N level compressors, the variable blading installed in the inlet duct for being connected to first order compressor, installed in even
The main pipeline and branch pipeline and the surge control valve installed in branch pipeline of the outlet conduit of N level compressors are connected to, its
It is characterised by, methods described includes：
By based on the adiabatic head value control variable blading related to the compression process of first order compressor and surge control
At least one of valve processed carrying out Anti-surge Control to first order compressor,
By controlling surge control based on the wait temperature pressure head value related to the compression process of high stage compressor to N level compressors
Valve carrying out Anti-surge Control to N levels compressor to high stage compressor, and
Wherein, N represents the integer equal to or more than " 2 ".
2. the method for claim 1, wherein pass throughTo determine adiabatic head value,
Wherein, HadiabaticAdiabatic head value is represented, γ represents the specific heat ratio of the fluid that will be compressed, and R represents gas constant, T tables
Show the temperature of the porch of first order compressor, PrExpression passes throughAnd determine
Pressure ratio.
3. the method for claim 1, wherein by following steps Anti-surge Control is carried out to first order compressor：In advance
First determine first regulation line for surge and at least one of control variable blading and surge control valve of first order compressor,
So that to the related adiabatic head value of compression process of first order compressor without departing from the when first order compressor is driven
The value of one regulation line for surge.
4. the method for claim 1, wherein H is passed throughisothermal=RT1n (Pr) the temperature pressure head value such as determining,
Wherein, HisothermalThe temperature pressure head values such as expression, R represents gas constant, and T represents the temperature of the porch of high stage compressor,
Pr is represented and passed throughAnd the pressure ratio for determining.
5. the method for claim 1, wherein by following steps high stage compressor is carried out to N levels compressor
Anti-surge Control：Second regulation line for surge of predetermined high stage compressor to N level compressors simultaneously controls surge control valve,
So that the grade temperature pressure head value related to the compression process of high stage compressor to N level compressors is less than and works as high stage compressor
The value of the second regulation line for surge when being driven to N levels compressor.
6. the method for claim 1, wherein multi-stage compression system also includes：
First pressure sensor, for measuring the pressure of the porch of first order compressor；And
First temperature sensor, for measuring the temperature of the porch of first order compressor.
7. the method for claim 1, wherein multi-stage compression system also includes：
Second pressure sensor, for measuring the pressure of the porch of high stage compressor；And
Second temperature sensor, for measuring the temperature of the porch of high stage compressor.
8. the method for claim 1, wherein multi-stage compression system also includes：
3rd pressure transducer, for measuring the pressure in the exit of N level compressors.
9. the method for claim 1, wherein at least one intercooler is arranged in first order compressor to N levels
Between compressor.
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| KR1020120142320A KR101858648B1 (en) | 2012-12-07 | 2012-12-07 | Method for anti-surge controlling of multi-stage compressing system |
| KR10-2012-0142320 | 2012-12-07 |
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| CN105257540A (en) * | 2015-11-05 | 2016-01-20 | 山东三牛机械有限公司 | Double-pole high-pressure dry type roots vacuum pump unit |
| CN105443348A (en) * | 2015-12-23 | 2016-03-30 | 上海金自天正信息技术有限公司 | Gas compressor system |
| CN107202028B (en) * | 2017-05-31 | 2019-03-29 | 北京理工大学 | A kind of turbocharger centrifugal compressor surge recognition methods |
| EP3477116B1 (en) * | 2017-10-31 | 2019-12-25 | Cryostar SAS | Method for controlling the outlet pressure of a compressor |
| CN110529422B (en) * | 2018-05-25 | 2024-04-09 | 势加透博（北京）科技有限公司 | Anti-surge control system of compressor |
| CN110374892A (en) * | 2019-07-09 | 2019-10-25 | 中国航发哈尔滨东安发动机有限公司 | A kind of centrifugal two-stage air compressor of high-speed direct-drive |
| CN111322265B (en) * | 2020-04-27 | 2022-02-11 | 乔治洛德方法研究和开发液化空气有限公司 | Anti-surge system of centrifugal compressor and control method |
| TW202210723A (en) * | 2020-08-31 | 2022-03-16 | 復盛股份有限公司 | Variable speed multi-stage compressor and control method thereof |
| CN112459984B (en) * | 2020-11-13 | 2022-05-03 | 西安陕鼓动力股份有限公司 | Performance test calculation method for isothermal compressor |
| CN114837967A (en) * | 2022-05-06 | 2022-08-02 | 重庆江增船舶重工有限公司 | Automatic anti-surge method of multistage compressor |
| CN114870422B (en) * | 2022-05-12 | 2024-03-01 | 梅胜 | Fractionating tower top pressure control method and device based on air pressure unit |
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| KR20140074101A (en) | 2014-06-17 |
| KR101858648B1 (en) | 2018-05-16 |
| CN103867446A (en) | 2014-06-18 |
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