CN102588315B - Automatic surge testing method for turbine compressor - Google Patents
Automatic surge testing method for turbine compressor Download PDFInfo
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Abstract
The invention discloses an automatic surge testing method for a turbine compressor. The automatic surge testing method includes the steps: determining anticipated surge testing points; inputting the testing points; setting the turbine compressor; acquiring testing parameters; judging a surge condition; smoothly approximating and quickly breaking away from the surge condition; storing surge parameters; judging whether to continue surge testing or not, repeating the steps until all the anticipated surge testing points are tested if continuing surge testing, and ending the testing if not; generating a surge curve; and generating an anti-surge curve. The frequency of testing acquisition of condition parameters of the turbine compressor by a parameter acquirer is 300-500 milliseconds per time. The margin coefficient of the anti-surge curve ranges from 5% to 10%. The automatic surge testing method effectively avoids the problem that manual test of the surge curve of the turbine compressor easily causes big errors, reduces human input of surge testing of the turbine compressor, avoids violent change of the operation condition of the turbine compressor caused by emergency operation measures, and guarantees instant surge testing of the turbine compressor.
Description
Technical field
The invention belongs to the automation field of compressor, be specifically related to a kind of turbocompressor surge method of test automatically.
Background technique
First the design of turbocompressor is, according to associated tooling, the parameter request of compressor operating operating mode is carried out to Pneumatic Calculation and structural design.The running operating point that the determined turbocompressor performance curve of Pneumatic Calculation (surge curve) requires tooling is included, to ensure the operation of mating of turbocompressor and tooling.Turbocompressor is in manufacture process, due to the deviation that Act for God such as machining; In installation process, due to the deviation that front and back process pipe, equipment arrange, all can make turbocompressor performance curve (surge curve) and the determined performance curve of Pneumatic Calculation (surge curve) depart to some extent at the scene.For the surge curve that ensures to arrange in unit control system and the accuracy of anti-surge curve, every turbocompressor goes to the on-the-spot artificial surge test of implementing of user the surge test professional workforce of Qian Douxu compressor manufacturer that puts into operation, with the degree that relatively the actual pumping point of turbocompressor and design pumping point match, and turbocompressor surge curve and anti-surge curve are set accordingly.When turbocompressor generation surge, its multiple monitoring parameters all can change, and can be used as the foundation that judges that surge occurs.
We know, turbocompressor anti-surge curve is on the basis of surge curve, to leave certain nargin to obtain.Anti-surge curve is the important barrier together that ensures turbocompressor safe operation, is also the separatrix of turbocompressor accidental conditions and abnormal operation condition simultaneously.As can be seen here, whether turbocompressor anti-surge line arranges reasonable, is first decided by that whether accurately true turbocompressor surge curve measure, and is secondly whether the nargin coefficient got when anti-surge curve is set is rationally appropriate.
If function admirable, meet the turbocompressor of technological requirement, improper due to inaccurate, the nargin coefficient value of surge test, will cause the inaccurate of anti-surge curve setting, thereby the operation of turbocompressor is brought to following negative effect: 1), if the setting of turbocompressor anti-surge curve is too conservative, can cause dwindling of the normal operation area of turbocompressor.Sometimes in order to meet the requirement of tooling operation, the turbocompressor operation of just need to leaking informaton, causes the waste of the energy and the noise pollution to environment; 2) if arranging, turbocompressor anti-surge curve approaches very much surge curve, easily cause turbocompressor surge operation, the safe operation of turbocompressor is formed to harm, and can cause process units abnormal running, the normal production of enterprise is brought to impact.To sum up, can the setting of the test of turbocompressor surge curve and anti-surge curve, normal, efficient, safe operation be most important to turbocompressor.
For a long time, the test of turbine compression surge curve is by manually completing.Surge tester relies on self understanding to surge, the observation of a certain Operational Limits to judge whether turbocompressor surge occurs, and obtains the surge parameter of turbocompressor expection surge test point.
First,, due to the monotony that tester observes, can not grasp the running state of turbocompressor comprehensively; In addition, tester is different with blunt property to the too drastic property of surging phenomenon reflection, observed and read pumping point parameter and actual parameter error to some extent, due to the understanding difference of surge tester to anti-surge curve, finally can have influence on accuracy and the uniformity of the surge curve testing out.In a word, manual testing's turbocompressor surge curve, be difficult to form a unified standard and the index to surge judgement, the surge curve of gained likely has larger deviation with the actual surge curve of turbocompressor, will cause anti-surge curve to arrange so inaccurate, the operation of turbocompressor is caused to bad impact.The second, when manual testing's turbocompressor surge curve, tester, in the time judging turbocompressor generation surge, can take instant operation measure, makes turbocompressor enter safe operation state.Such operation makes the operating conditions of turbocompressor that violent variation occur, and strictly speaking, such operation can bring corresponding harm to turbocompressor and relevant apparatus, should give and avoids.The 3rd, manual testing's turbocompressor surge curve, needs Compressor Manufacturing producer to appoint professional workforce to carry out practical operation test, and not only cost of labor is high, is also subject to the restriction of space-time simultaneously, lacks promptness.
Summary of the invention
For the defect existing in above-mentioned prior art or deficiency, the object of the invention is to, a kind of automatic test approach of turbocompressor surge is provided, the method is utilized the automatic surge test of turbocompressor, and Lookup protocol surge line and anti-surge line, replace by manual operation, test by rule of thumb the surge of turbocompressor and surge curve is set and the primitive method of anti-surge curve, effectively avoid manual testing's turbocompressor surge curve easily to produce larger error, reduce the human input of turbocompressor surge test, and the turbocompressor operating conditions generation acute variation of having avoided instant operation measure to cause, guarantee turbocompressor surge test can be carried out immediately.
In order to achieve the above object, the present invention adopts following technical solution:
An automatic test approach for turbocompressor surge, is characterized in that, specifically comprises the steps:
1) determine the surge test point of expecting: in the Pneumatic Calculation point turbocompressor surge curve, choose at random 3～6 surge test points as expection;
2) input of test point: the represented turbocompressor operating mode of surge test point of an expection of input saves static blade angle value and/or the generating unit speed value of mechanism, and exhaust pressure value and/or flow;
3) set of turbocompressor: unit control system control turbocompressor working condition adjusting mechanism and/or rotating speed adjusting mechanism are set to turbocompressor represented static blade angle value and/or the generating unit speed value of surge test point of the expection of input;
4) test parameter collection: when turbocompressor is placed in after the surge test point of expection, unit control system control test parameter collector gathers the duty parameter value of turbocompressor with certain frequency, and described duty parameter value comprises aperture (ZT), rotating speed (SE), inlet temperature (TE), flow or the throat pressure difference (PdT) of turbocompressor and inlet pressure, exhaust pressure (PT, PT1, PT2);
5) surging condition judgement: the two adjacent groups duty parameter value relatively collecting, in the situation that other test condition is all identical, if exhaust pressure and flow in two groups of duty parameter values reduce simultaneously, judges that turbocompressor enters surging condition;
6) steadily approaching and disengaging fast of surging condition: in the time that turbocompressor does not enter surging condition, turned down by the aperture of anti-surge controlling mechanism controller control anti-surging control valve door; If judge that turbocompressor is in surging condition, think that turbocompressor has arrived actual pumping point, now performs step 7),, increased by anti-surge controlling mechanism controller control anti-surging control valve door aperture meanwhile;
7) storage of surge parameter: the test value that is expection by exhaust pressure, the flow of last group in two groups of duty parameter values stores in pumping point parameter storage, and the test of current expection surge test point finishes, execution step 8);
8) judge whether surge test continues: unit control system reminds surge test operator to determine that whether surge test is proceeded, and if so, performs step 2) to step 8), until all expection surge test points are completed; Otherwise finish test, execution step 9);
9) generate surge curve: after test finishes, confirm through surge test operator, unit control system reads the surging condition parameter that the test of pumping point parameter storage storage obtains, through the actual surge curve of curve generation turbocompressor;
10) generate anti-surge curve: surge test operator input anti-surge curve nargin coefficient, unit control system obtains surge curve the anti-surge curve of turbocompressor by this nargin coefficient translation downwards.
Further, described step 3) in operate respectively as follows for dissimilar turbocompressor: 1. for determining the adjustable AV series turbocompressor of rotating speed stator blade, turbocompressor is placed in to the static blade angle that the surge test point of expection represents; 2. for the adjustable AV of variable speed stator blade series turbocompressor, turbocompressor is placed in to the static blade angle that surge test point represents, turbocompressor is placed in to the generating unit speed value that the surge test point of expection represents; 3. for variable speed turbocompressor, turbocompressor is placed in to the generating unit speed value that the surge test point of expection represents.
Further, described step 4) in test parameter collector 7 frequency that gathers the duty parameter of turbocompressor be 300～500 millis second/time.
Further, described step 10) in nargin coefficient get 5%～10%.
The present invention is directed to the existing deficiency of manual testing's turbocompressor surge curve and arrange, compared with existing surge test method, beneficial effect of the present invention is as follows:
1) this method is controlled and is replaced manual operation by control system unification, and error and the monotony of having avoided manual testing's method to produce due to personal factor judge comprehensively, accurately unify there is the situation of surge.
2) because the test process of this method is to compare and adjust at any time test with the operating mode of measuring in real time according to pre-set preset point, therefore, obtain to greatest extent the true surge curve of turbocompressor, thereby make arranging of anti-surge curve accurate, can ensure the operation that turbocompressor long-term safety is stable.
3) pass through control system at any time according to the switching of operating conditions surge-proof valve and aperture size, the surge test of turbine compression can steadily be carried out, the harm of having avoided the emergency measure of taking in order to enter steady operating mode in manual testing to bring turbocompressor, can carry out turbocompressor surge test immediately.
4) the present invention, on the basis of test automatically, can freely control whether continue test according to the situation of test by operator, and its surge test has repeatability, and therefore, the method had both been saved human cost, again can real-time, freedom control test process.
Brief description of the drawings
The surge curve of the A series axial flow compressor that Tu1Shi Mou turbocompressor manufacturer provides.
The surge curve of the AV series axial flow compressor that Tu2Shi Mou turbocompressor manufacturer provides.
The surge curve of the centrifugal compressor that Tu3Shi Mou turbocompressor manufacturer provides.
Fig. 4 is the workflow diagram that the present invention is applied to Axial Flow Compressor.
Fig. 5 is the workflow diagram that the present invention is applied to centrifugal compressor.
Fig. 6 to Figure 11 is the process monitoring figure of a concrete application example.
Fig. 6 is step 1) choose the surge test point of the expection obtaining.
Fig. 7 is the actual measurement surging condition figure of the surge test point (330,25) of expection.
Fig. 8 is the actual measurement surging condition figure of the surge test point (395,30) of expection.
Fig. 9 is the actual measurement surging condition figure of the surge test point (480,38) of expection.
Figure 10 is the actual measurement surging condition figure of the surge test point (575,49) of expection.
Figure 11 is actual surge curve and the anti-surge curve of testing the turbocompressor obtaining.Wherein, the curve that is positioned at top is surge curve, and the curve that is positioned at below is anti-surge curve.
Below in conjunction with the drawings and specific embodiments the present invention will be further explained explanation.
Embodiment
The flow process of turbocompressor surge automatic test approach of the present invention as shown in Figure 4, Figure 5.The applied unit of the method comprises unit control system, turbocompressor 1, turbocompressor working condition adjusting mechanism 2, determine the pull-over gear 3 of rotating speed or variable speed, anti-surging control valve door 4, rotating speed adjusting mechanism 8, and for measuring the temperature transducer (TE) of inlet temperature, measure the speed probe (SE) of generating unit speed, measure the position transmitter (ZT) of turbocompressor working condition adjusting mechanism aperture, measure the transmitter (PdT) of turbocompressor inlet flow rate, measure turbocompressor inlet pressure, the transmitter of exhaust pressure (wherein, pressure transmitter PT is set on the outlet conduit of Axial Flow Compressor and measures exhaust pressure, pressure transmitter PT1 is set on the inlet pipeline of centrifugal compressor and measures inlet pressure, pressure transmitter PT2 is set on outlet conduit and measures exhaust pressure), above-mentioned hardware system is in order to complete the detection of the inventive method, control, carry out function.
Functional block shown in flow chart 4, Fig. 5 is as anti-surge controlling mechanism controller 6, test parameter collector 7, pumping point parameter storage 12, surging condition judgement, generation surge curve, generation anti-surge curve, control, the detection of the present invention's application, the method for generation are formed, build among unit control system, wherein, anti-surge controlling mechanism controller 6 is for controlling the aperture of anti-surging control valve door 4.
The parameter that said temperature sensor, speed probe, position transmitter, differential pressure transmitter and pressure transmitter detect is sent to unit control system, unit control system is according to function shown in Fig. 4, Fig. 5, turbocompressor working condition adjusting mechanism 2, anti-surging control valve door 4, rotating speed adjusting mechanism 8 are sent to regulating and controlling instruction, finally complete the automatic test of turbocompressor surge.
Method of the present invention specifically comprises the steps:
1) determine the surge test point of expecting: the parameters that can clearly mark Pneumatic Calculation point and calculation level in the surge curve that turbocompressor manufacturer provides.As shown in Figure 1, in the surge curve of certain A series axial flow compressor, marked 6 Pneumatic Calculation points, each point is corresponding with the curve number of figure top.The parameter such as aperture preset value (stator blade aperture), generating unit speed that can be obtained Pneumatic Calculation point turbocompressor operating mode joint mechanism by response curve number, the position by respective point in surge curve can obtain the parameter such as flow (throat pressure difference), exhaust pressure of surging condition point.
The surge test point of expection is 3～6 points choosing at random from the Pneumatic Calculation point of mark.For example, Fig. 1, Fig. 2, Fig. 3 are respectively the estimated performance curves of the 3 class turbocompressors that provide of turbocompressor manufacturer, choose 6 surge test points according to Fig. 1, choose 7 surge test points according to Fig. 2, choose 5 surge test points according to Fig. 3.
Taking Fig. 2 as example, can choose following 7 points as surge test point:
Wherein, the set value that rotating speed SE, static blade angle (aperture ZT) they are turbocompressor test, and exhaust pressure PT, flow PdT are test oracle desired value.
2) input of test point: the represented turbocompressor operating mode of surge test point of an expection of input saves static blade angle value and/or the generating unit speed value of mechanism, and exhaust pressure value and/or flow (throat pressure difference);
3) set of turbocompressor: unit control system is according to static blade angle value and/or the generating unit speed value of the represented turbocompressor working condition adjusting mechanism of the expection surge test point of input, control turbocompressor working condition adjusting mechanism 2 and/or rotating speed adjusting mechanism 8 turbocompressor group is placed in to current surge test point, be set to the represented static blade angle of surge test point and/or rotating speed by turbocompressor.Operate respectively as follows for dissimilar turbocompressor: 1. for determining the adjustable AV of rotating speed stator blade series turbocompressor, turbocompressor is placed in to the static blade angle that the surge test point of expection represents; 2. for the adjustable AV of variable speed stator blade series turbocompressor, turbocompressor is placed in to the static blade angle that surge test point represents, turbocompressor is placed in to the generating unit speed value that the surge test point of expection represents; 3. for variable speed turbocompressor, turbocompressor is placed in to the generating unit speed value that the surge test point of expection represents;
4) test parameter collection: when turbocompressor is placed in after the surge test point of expection, unit control system control test parameter collector 7 gathers the duty parameter of turbocompressor with certain frequency (this frequency is generally set as 300～500 millis second/time): described duty parameter comprises the stator blade aperture (ZT) of turbocompressor working condition adjusting mechanism, rotating speed (SE), inlet temperature (TE), flow or throat pressure difference (PdT) and inlet pressure, exhaust pressure (PT, PT1, PT2), duty parameter is in order to judge whether turbocompressor enters surging condition,
5) surging condition judgement: the two adjacent groups duty parameter value relatively collecting, in the situation that other test condition is all identical, if exhaust pressure and flow in two groups of duty parameter values reduce simultaneously, judges that turbocompressor enters surging condition;
6) steadily approaching and disengaging fast of surging condition: in the time that turbocompressor does not enter surging condition, the aperture of controlling anti-surging control valve door 4 by anti-surge controlling mechanism controller 6 slowly turns down, so that the operating point of turbocompressor slowly and stably approaches surging condition point; If judge that turbocompressor is in surging condition, think that turbocompressor has arrived actual pumping point, now perform step 7), simultaneously, controlling anti-surging control valve door 4 apertures by anti-surge controlling mechanism controller (6) increases sharply, make turbocompressor depart from fast and reposefully surging condition, and do not affect the continuation safe operation of unit;
7) storage of surge parameter: the test value that is expection by exhaust pressure, the flow of last group in two groups of duty parameter values stores in pumping point parameter storage 12, and the test of current expection surge test point finishes, execution step 8);
8) judge whether surge test continues: after current pumping point has been tested, unit control system reminds surge test operator to determine whether surge test is proceeded, to perform step 2) to step 8), until all expection surge test points are completed; Otherwise finish test, execution step 9);
9) generate surge curve: after test finishes, confirm through surge test operator, unit control system reads the surging condition parameter that the test of pumping point parameter storage (12) storage obtains, and generates the actual surge curve of turbocompressor through curve;
10) generate anti-surge curve: surge test operator input anti-surge curve nargin coefficient, this nargin coefficient is taken as 5%～10%, and unit control system obtains surge curve the anti-surge curve of turbocompressor by the nargin coefficient translation downwards of input.
Embodiment 1:
Referring to Fig. 6 to Figure 11, inventor utilizes application case below further to explain to method of the present invention, and it is AV series axial flow compressor that this embodiment selects turbocompressor.First, programme according to method step of the present invention, then use unit control system according to program, unit to be controlled automatically, finally obtain the anti-surge curve of this turbocompressor.
As shown in Figure 6, the surge curve that the present embodiment obtains from axial flow compressor Pneumatic Calculation to be tested has been selected the surge test point of 4 expections: (330,25), (395,30), (480,38) and (575,49), to determine 4 surge test points according to step 2 of the present invention) to step 8) input respectively and carry out actual test, the duty parameter of the each surge test point obtaining is as shown in Figure 7 to 10; The surge test point of Fig. 7 expection is (330,25), i.e. exhaust pressure 330Kp, and static blade angle is 25 °, the pumping point that actual test obtains is (320,2.9), i.e. exhaust pressure 320Kp, throat pressure difference 2.9Kp; The surge test point of Fig. 8 expection is (395,30), and the pumping point that actual test is arrived is (380.2,3.88); The surge test point of Fig. 9 expection is (480,38), and the pumping point that actual test is arrived is (470.2,5.58); The surge test point of Figure 10 expection is (575,49), and the pumping point that actual test is arrived is (564.5,7.96); According to step 9 of the present invention) to step 10) the actual surge curve that obtains and anti-surge curve as shown in figure 11, the curve that is positioned at top in figure is surge curve, the curve that is positioned at below is anti-surge curve.Wherein, according to actual needs, step 9) the nargin coefficient of input is 8%.
Claims (3)
1. an automatic test approach for turbocompressor surge, is characterized in that, specifically comprises the steps:
1) determine the surge test point of expecting: in the Pneumatic Calculation point turbocompressor surge curve, choose at random 3～6 surge test points as expection;
2) input of test point: static blade angle value and/or the generating unit speed value of the represented turbocompressor working condition adjusting mechanism of surge test point of an expection of input, and exhaust pressure value and/or flow;
3) set of turbocompressor: unit control system control turbocompressor working condition adjusting mechanism (2) and/or rotating speed adjusting mechanism (8) are set to turbocompressor represented static blade angle value and/or the generating unit speed value of surge test point of the expection of input;
4) test parameter collection: when turbocompressor is placed in after the surge test point of expection, unit control system control test parameter collector (7) gathers the duty parameter value of turbocompressor with certain frequency, described duty parameter value comprises aperture (ZT), rotating speed (SE), inlet temperature (TE), flow or throat pressure difference (PdT), inlet pressure and the exhaust pressure (PT, PT1, PT2) of turbocompressor;
5) surging condition judgement: the two adjacent groups duty parameter value relatively collecting, in the situation that other test condition is all identical, if exhaust pressure and flow in two groups of duty parameter values reduce simultaneously, judges that turbocompressor enters surging condition;
6) steadily approaching and disengaging fast of surging condition: in the time that turbocompressor does not enter surging condition, the aperture of being controlled anti-surging control valve door (4) by anti-surge controlling mechanism controller (6) turns down; If judge that turbocompressor is in surging condition, think that turbocompressor has arrived actual pumping point, now perform step 7), meanwhile, controlling anti-surging control valve door (4) aperture by anti-surge controlling mechanism controller (6) increases;
7) storage of surge parameter: the test value that is expection by exhaust pressure, the flow of last group in two groups of duty parameter values stores in pumping point parameter storage (12), the test of current expection surge test point finishes, execution step 8);
8) judge whether surge test continues: unit control system reminds surge test operator to determine that whether surge test is proceeded, and if so, performs step 2) to step 8), until all expection surge test points are completed; Otherwise finish test, execution step 9);
9) generate surge curve: after test finishes, confirm through surge test operator, unit control system reads the surging condition parameter that the test of pumping point parameter storage (12) storage obtains, and generates the actual surge curve of turbocompressor through curve;
10) generate anti-surge curve: surge test operator input anti-surge curve nargin coefficient, unit control system obtains surge curve the anti-surge curve of turbocompressor by this nargin coefficient translation downwards.
2. the method for claim 1, is characterized in that, described step 4) in test parameter collector (7) frequency of duty parameter that gathers turbocompressor be 300～500 millis second/time.
3. the method for claim 1, is characterized in that, described step 10) in nargin coefficient get 5%～10%.
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| CN201210090491.4A CN102588315B (en) | 2012-03-30 | 2012-03-30 | Automatic surge testing method for turbine compressor |
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| CN201210090491.4A CN102588315B (en) | 2012-03-30 | 2012-03-30 | Automatic surge testing method for turbine compressor |
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| US9657660B2 (en) * | 2015-09-14 | 2017-05-23 | Ford Global Technologies, Llc | Method and system for surge control |
| CN105543443B (en) * | 2015-12-29 | 2018-07-24 | 中冶南方工程技术有限公司 | A method of being used for coal gas of converter pressuring machine antisurge control system |
| CN105626266B (en) * | 2016-01-12 | 2017-09-08 | 中国科学院工程热物理研究所 | A kind of gas turbine anti-surge deflation energy recovery utilizing system |
| CN106086271A (en) * | 2016-06-20 | 2016-11-09 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Energy-saving and efficiency-increasing method for reducing compressed air discharge volume of blast furnace blower |
| CN107917094B (en) * | 2016-10-08 | 2019-07-19 | 上海梅山钢铁股份有限公司 | A kind of blast furnace blower anti-surge control method |
| CN109667771B (en) * | 2019-01-31 | 2024-01-02 | 浙江飞旋科技有限公司 | Turbine vacuum system and control method |
| CN110067768A (en) * | 2019-05-16 | 2019-07-30 | 济南大陆机电股份有限公司 | A kind of compressor anti-surge control method and system |
| CN113944650B (en) * | 2020-07-16 | 2024-03-19 | 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 |
| CN112128133B (en) * | 2020-11-25 | 2021-02-02 | 中国航发上海商用航空发动机制造有限责任公司 | Opening margin measurement test method for adjustable stationary blade of high-pressure gas compressor |
| CN112284753B (en) * | 2020-12-28 | 2021-03-12 | 中国航发上海商用航空发动机制造有限责任公司 | Method and device for measuring and analyzing flow of gas compressor test and gas compressor test system |
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| CN115263742B (en) * | 2022-08-01 | 2023-11-21 | 西安陕鼓动力股份有限公司 | Method and program product for determining starting resistance moment of compressor under pressure through actual measurement |
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