CN109611370A - The regulation device of helium compressor surge margin and regulation method based on the regulation device - Google Patents
The regulation device of helium compressor surge margin and regulation method based on the regulation device Download PDFInfo
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- CN109611370A CN109611370A CN201811639783.2A CN201811639783A CN109611370A CN 109611370 A CN109611370 A CN 109611370A CN 201811639783 A CN201811639783 A CN 201811639783A CN 109611370 A CN109611370 A CN 109611370A
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- China
- Prior art keywords
- air inlet
- surge margin
- regulation
- helium compressor
- helium
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Classifications
-
- 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
- F04D27/0223—Control schemes therefor
-
- 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
- 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
- F05D2270/00—Control
- F05D2270/30—Control parameters, e.g. input parameters
- F05D2270/301—Pressure
- F05D2270/3011—Inlet pressure
-
- 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
- F05D2270/00—Control
- F05D2270/30—Control parameters, e.g. input parameters
- F05D2270/301—Pressure
- F05D2270/3013—Outlet pressure
-
- 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
- F05D2270/00—Control
- F05D2270/30—Control parameters, e.g. input parameters
- F05D2270/303—Temperature
-
- 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
- F05D2270/00—Control
- F05D2270/30—Control parameters, e.g. input parameters
- F05D2270/304—Spool rotational speed
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
Abstract
The regulation device of helium compressor surge margin of the invention and the regulation method based on the regulation device are related to compressor control device and control method, purpose is that generally all principle is complicated and calculating process is cumbersome in order to overcome the problems, such as the existing method for improving helium compressor job stability, the regulation device of helium compressor surge margin, including air inlet barometric surveying unit, gas outlet barometric surveying unit, air inlet temperature measuring unit, rotation speed measurement unit and regulation processor；The beneficial effects of the present invention are: providing a kind of regulation device and regulation method for improving helium compressor job stability by regulation surge margin, principle is simple, and the parameter of required acquisition is few, and calculation amount is small, high-efficient.
Description
Technical field
The present invention relates to compressor control device and control methods, and in particular to the compressor control based on surge margin regulation
Device processed and control method.
Background technique
The surge of helium compressor refers to the air-flow oscillation for the low frequency, high amplitude that air-flow occurs along compressor axis direction
Phenomenon.The air-flow oscillation of this low frequency high amplitude is a kind of very big exciting force source, it will lead to helium compressor component
Intense mechanical vibration and hot end overtemperature, and the badly damaged of component is caused in a short period of time, so under any state
Helium compressor is not allowed to enter surge area work, therefore this just needs to improve it as far as possible in the helium compressor course of work
Job stability reduces the possibility of surge.
And the existing method for improving helium compressor job stability generally all principles are complicated, need to acquire a variety of ginsengs
Number crosses range request height for acquisition, and calculating process is cumbersome, low efficiency.
Summary of the invention
The purpose of the invention is to overcome the existing method for improving helium compressor job stability generally all principle
Complicated and cumbersome calculating process problem provides a kind of regulation device of helium compressor surge margin and based on the tune
Control the regulation method of device.
The regulation device of helium compressor surge margin of the invention, including air inlet barometric surveying unit, outlet implication
Press measuring unit, air inlet temperature measuring unit, rotation speed measurement unit and regulation processor；
It is connected between the gas outlet of helium compressor and air inlet, and the access between the gas outlet and air inlet is equipped with
Controlling valve；
The air inlet temperature of the air inlet air pressure signal output end of air inlet barometric surveying unit, air inlet temperature measuring unit
Spend the tach signal of signal output end, the gas outlet air pressure signal output end of gas outlet barometric surveying unit, rotation speed measurement unit
Output end respectively with regulation processor air inlet air pressure signal input terminal, air inlet temperature signal input part, gas outlet air pressure
Signal input part and the electrical connection of tach signal input terminal；
Regulate and control the controlling valve flow control signal output input of processor and the controlling valve flow control signal of controlling valve
Input/output terminal electrical connection；
Rotation speed measurement unit is laser tachometric survey device.
The regulation method of regulation device based on helium compressor surge margin of the invention, ran in helium compressor
Cheng Zhong executes following specific steps:
Step 1: measuring the air inlet air pressure P of helium compressor at predetermined intervalsin, gas outlet air pressure Pout, into
Port temperature TinWith revolving speed N；
Step 2: finding current state point S on helium compressor characteristic curve using step 1 the data obtained；
Step 3: the current surge margin of helium compressor is calculated using state point S and by the current surge margin
It is compared with default surge margin value；
If current surge margin is greater than default surge margin value, terminate to regulate and control；
If current surge margin is less than default surge margin value, four are gone to step；
Step 4: controlling valve is adjusted, so that the flow of helium increases in return line, until current surge margin is greater than in advance
If surge margin value, then terminates to regulate and control.
The beneficial effects of the present invention are: providing one kind by regulation surge margin to improve helium compressor job stability
Regulation device and regulation method, principle is simple, and the parameter of required acquisition is few, and calculation amount is small, high-efficient.
Detailed description of the invention
Fig. 1 is that the regulation device of helium compressor surge margin of the invention and the structure of helium compressor mated condition are shown
It is intended to；
Fig. 2 is the electrical structure schematic diagram of the regulation device of helium compressor surge margin；
Fig. 3 is the performance diagram of helium compressor in regulation method.
Flow is horizontal axis in Fig. 3, and pressure ratio is the longitudinal axis, wherein C1~CnFor equivalent speed curves, and L is surge boundary line.
Specific embodiment
Specific embodiment one
The regulation device of helium compressor surge margin of the invention, as shown in Fig. 2, including air inlet barometric surveying unit
1, gas outlet barometric surveying unit 2, air inlet temperature measuring unit 3, rotation speed measurement unit 4, controlling valve 6 and regulation processor 7；
Air inlet barometric surveying unit 1 and air inlet temperature measuring unit 3 are located at 8 air inlet of helium compressor；Outlet
Implication pressure measuring unit 2 is located at 8 gas outlet of helium compressor；
As shown in Figure 1, being connected between the gas outlet of helium compressor 8 and air inlet, and between the gas outlet and air inlet
Access be equipped with controlling valve 6, for adjusting the flow of helium in return line 5；
The air inlet of air inlet the air pressure signal output end, air inlet temperature measuring unit 3 of the air inlet barometric surveying unit 1
Mouthful temperature signal output end, the gas outlet air pressure signal output end of gas outlet barometric surveying unit 2, rotation speed measurement unit 4 turn
Fast signal output end respectively with regulation 7 air inlet air pressure signal input terminal of processor, air inlet temperature signal input part, gas outlet
Air pressure signal input terminal and the electrical connection of tach signal input terminal；
Regulate and control the controlling valve flow control signal output input and 6 controlling valve flow control signal of controlling valve of processor 7
Input/output terminal electrical connection；
Rotation speed measurement unit (4) is laser tachometric survey device.
Laser tachometric survey device uses laser, and the laser by receiving compressor blade reflection turns to measure compressor
Speed, and due to being measured using laser indirect, the work of compressor will not be impacted.
Specific embodiment two
Present embodiment two and the difference of specific embodiment one be, the gas outlet of helium compressor 8 and air inlet
It is connected between mouthful by return line 5.It is wherein also provided on return line 5 to obtain more and more accurate data
Various instrument and sensor, such as flowmeter.
Specific embodiment three
Regulation method based on regulation device described in specific embodiment one or two, in helium compressor operational process
In, execute following specific steps:
Step 1: measuring the air inlet air pressure P of helium compressor at predetermined intervalsin, gas outlet air pressure Pout, into
Port temperature TinWith revolving speed N；
Step 2: finding current state point S on helium compressor characteristic curve using step 1 the data obtained；
Step 3: the current surge margin of helium compressor is calculated using state point S and by the current surge margin
It is compared with default surge margin value；
If current surge margin is greater than default surge margin value, terminate to regulate and control；
If current surge margin is less than default surge margin value, four are gone to step；
Step 4: controlling valve 6 is adjusted, so that the flow of helium increases in return line 5, until current surge margin is greater than
Default surge margin value, then terminates to regulate and control.
It is the curve obtained by the characteristic test of helium compressor 8 as shown in figure 3, being helium compressor characteristic curve
Figure.On helium compressor characteristic curve, flow is horizontal axis, and pressure ratio is the longitudinal axis, wherein C1~CnFor equivalent speed curves, and L is
Surge boundary line.
Wherein C1~CnCorresponding different rotating speeds (generally equal difference interval measures), surge boundary line represents helium and calms the anger
Machine 8 is able to maintain the limit boundary line of air-flow not loss of stability when flow reduces under different operating revolving speed, once exceed upwards
Surge boundary line, violent surge, which can occur, for helium compressor 8 causes the intense mechanical vibration of 8 component of helium compressor and hot end super
Temperature, and the badly damaged of component is caused in a short period of time.
And regulation method of the invention, then it is to keep 8 job stability of helium compressor by adjusting surge margin.
Specific principle of adjustment and control is to regulate and control processor to make the current state point S of helium compressor 8 far from surge boundary line
7 adjust controlling valve 6, and the flow for flowing into helium in return line 5 increases.Since helium flows to helium pressure from return line 5
The air inlet of mechanism of qi 8, therefore the air inlet air pressure P of helium compressor 8inIncrease, thus pressure ratio πcReduce.Therefore in current state
Point S is moved down on helium compressor characteristic curve along equivalent speed curves, far from surge boundary line, reduces and surge occurs
May, improve the job stability of helium compressor 8.
Specific embodiment four
Present embodiment four and the difference of specific embodiment three are, step 1 institute total is utilized in step 2
According to finding current state point S on helium compressor characteristic curve, specific step is as follows
Current pressure ratio π is calculated in step 2 onec=Pout/PinWith current equivalent revolving speed Ne=N/Tik, 0 < k < 1,
Middle k value has different values for different operating conditions, need to be acquired by experiment, can be defaulted as k=0.5；
The current equivalent revolving speed N of step 2 two, basiseIt is bent that corresponding equivalent revolving speed is found on helium compressor characteristic curve
Line, in the corresponding equivalent speed curves with current pressure ratio πaMore corresponding is state point S.
If equivalent revolving speed NeCan not be corresponding with the equivalent speed curves in Fig. 3, then two sides are found closest to this equivalent turn
Fast NeEquivalent speed curves, calculate new equivalent speed curves by existing interpolation method, then determine state point S.
Specific embodiment five
Present embodiment five and the difference of specific embodiment four are, are calculated in step 3 using state point S
Specific step is as follows for the current surge margin of helium compressor out:
Step 3 one, the straight line that Y-axis (pressure ratio axis) is parallel to using state point S as basic point, the straight line and surge boundary line
Intersection point corresponding to pressure ratio be πb；
Current surge margin SM is calculated in step 3 two according to the following formula:
SM=(πb-πa)/πb× 100%.
Wherein, specific embodiment three can also include following operating procedure:
Surge margin SM is determined whether between surge line section, i.e. L1 and L2, if surge margin SM exists
In surge line section, then end processing.If it was not then it is fallen in surge line section by adjustment state point S, it can not only
Surge is enough further prevented, the job stability of helium compressor 8 is kept.
And adjustment state point S makes it fall in the method in surge line section, using existing PID control or can be based on machine
Device learns acquistion.
Claims (5)
1. the regulation device of helium compressor surge margin, which is characterized in that including air inlet barometric surveying unit (1), outlet
Implication presses measuring unit (2), air inlet temperature measuring unit (3), rotation speed measurement unit (4) and regulation processor (7)；
It is connected between the gas outlet and air inlet of helium compressor (8), and the access between the gas outlet and air inlet is equipped with
Controlling valve (6)；
The air inlet of the air inlet air pressure signal output end of air inlet barometric surveying unit (1), air inlet temperature measuring unit (3)
Temperature signal output end, the gas outlet air pressure signal output end of gas outlet barometric surveying unit (2), rotation speed measurement unit (4)
Tach signal output end respectively with the regulation air inlet air pressure signal input terminal of processor (7), air inlet temperature signal input part,
Gas outlet air pressure signal input terminal and the electrical connection of tach signal input terminal；
The controlling valve flow control of the controlling valve flow control signal output input and controlling valve (6) that regulate and control processor (7) is believed
The electrical connection of number input/output terminal；
Rotation speed measurement unit (4) is laser tachometric survey device.
2. the regulation device of helium compressor surge margin according to claim 1, which is characterized in that helium compressor
(8) it is connected between gas outlet and air inlet by return line (5).
3. the regulation method based on regulation device of any of claims 1 or 2, which is characterized in that run in helium compressor
Cheng Zhong executes following specific steps:
Step 1: measuring the air inlet air pressure P of helium compressor (8) at predetermined intervalsin, gas outlet air pressure Pout, air inlet
Mouth temperature TinWith revolving speed N；
Step 2: finding current state point S on helium compressor characteristic curve using step 1 the data obtained；
Step 3: the current surge margin of helium compressor is calculated using state point S and by the current surge margin and in advance
If surge margin value compares；
If current surge margin is greater than default surge margin value, terminate to regulate and control；
If current surge margin is less than default surge margin value, four are gone to step；
Step 4: controlling valve (6) are adjusted, so that the flow of helium increases in return line (5), until current surge margin is greater than
Default surge margin value, then terminates to regulate and control.
4. regulation method according to claim 3, which is characterized in that step 1 the data obtained is utilized in step 2, in helium
Current state point S is found on gas compressor performance characteristic curve, and specific step is as follows
Current pressure ratio π is calculated in step 2 onec=Pout/PinWith current equivalent revolving speed Ne=N/Tik, 0 < k < 1；
The current equivalent revolving speed N of step 2 two, basiseCorresponding equivalent speed curves are found on helium compressor characteristic curve, it should
In equivalent speed curves with current pressure ratio πaMore corresponding is state point S.
5. regulation method according to claim 4, which is characterized in that helium is calculated using state point S in step 3
Specific step is as follows for the current surge margin of compressor:
Corresponding to the intersection point of step 3 one, the straight line for being parallel to Y-axis using state point S as basic point, the straight line and surge boundary line
Pressure ratio be πb；
Current surge margin SM is calculated in step 3 two according to the following formula:
SM=(πb-πa)/πb× 100%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811639783.2A CN109611370A (en) | 2018-12-29 | 2018-12-29 | The regulation device of helium compressor surge margin and regulation method based on the regulation device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811639783.2A CN109611370A (en) | 2018-12-29 | 2018-12-29 | The regulation device of helium compressor surge margin and regulation method based on the regulation device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111444636A (en) * | 2020-05-18 | 2020-07-24 | 南京航空航天大学 | Axial flow compressor surge margin calculation method based on primitive level degradation characteristic diagram |
| CN112253523A (en) * | 2020-12-08 | 2021-01-22 | 中国航发上海商用航空发动机制造有限责任公司 | Test method and tester for identifying stall initial stage of multistage axial flow compressor |
| CN112483454A (en) * | 2020-11-12 | 2021-03-12 | 中国航发沈阳黎明航空发动机有限责任公司 | Evaluation method for surge margin of gas compressor |
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| CN108343513A (en) * | 2017-01-23 | 2018-07-31 | 斗山重工业建设有限公司 | The surge margin control method of gas turbine and the air extractor of gas turbine |
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| CN102224346B (en) * | 2008-11-24 | 2015-11-25 | 西门子公司 | For running the method for multistage compressor |
| CN105308329A (en) * | 2013-03-26 | 2016-02-03 | 诺沃皮尼奥内股份有限公司 | Methods and systems for controlling turbocompressors |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111444636A (en) * | 2020-05-18 | 2020-07-24 | 南京航空航天大学 | Axial flow compressor surge margin calculation method based on primitive level degradation characteristic diagram |
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| CN112483454A (en) * | 2020-11-12 | 2021-03-12 | 中国航发沈阳黎明航空发动机有限责任公司 | Evaluation method for surge margin of gas compressor |
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| CN112253523A (en) * | 2020-12-08 | 2021-01-22 | 中国航发上海商用航空发动机制造有限责任公司 | Test method and tester for identifying stall initial stage of multistage axial flow compressor |
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Application publication date: 20190412 |