CN106014500A - Method for identifying and setting degree-of-overlapping of steam admission regulating valves for steam turbine - Google Patents
Method for identifying and setting degree-of-overlapping of steam admission regulating valves for steam turbine Download PDFInfo
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- CN106014500A CN106014500A CN201610372927.7A CN201610372927A CN106014500A CN 106014500 A CN106014500 A CN 106014500A CN 201610372927 A CN201610372927 A CN 201610372927A CN 106014500 A CN106014500 A CN 106014500A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D17/00—Regulating or controlling by varying flow
- F01D17/10—Final actuators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
- F01D21/003—Arrangements for testing or measuring
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Turbines (AREA)
Abstract
The invention discloses a method for identifying and setting a degree-of-overlapping of steam admission regulating valves for a steam turbine. According to the method, on the basis of the analysis and the summarization of indexes of regulating valve step amplitudes, flow linearity degrees, valve-point-working-condition throttling losses and the like, in a valve position overlapping area, of the steam admission regulating valves, which are turned on before and later, of the steam turbine, through technical and economical measures and from two aspects of safety and economical efficiency, the systematic and scientific identification is carried out on the reasonability of the degree-of-overlapping of the steam admission regulating valves for the steam turbine; and a standard or a basis, which not only can be used for guaranteeing that the steam admission flows, in the valve position overlapping area, of the steam admission regulating valves for the steam turbine are accurately controlled and further a speed regulating system safely runs, but also can be used for decreasing an inherent throttling loss of a steam distributing mechanism in a valve point working condition, and is applicable in a broad-spectrum manner, for setting the degree-of-overlapping of steam admission regulating valves is formed, so as to realize the accurate control of the steam admission flows, in the valve position overlapping area, of regulating valves and the safe and high-efficiency running of a steam turbine set.
Description
Technical field
The present invention relates to a kind of steam turbine and enter steam control valve degree of overlapping identification and setting method, belong to steam turbine equipment and run skill
Art field.
Background technology
In operation, Steam Turbine is opened several often through (or synchronization) successively and is entered steam control valve to increase steam turbine
Enter steam flow amount.Generally by whole enter total valve seat opening of steam control valve group and respectively enter entering of steam control valve valve seat opening and steam turbine
The numerical value corresponding relation of steam flow amount is referred to as steam turbine discharge characteristic.Due to single enter steam control valve bulk flow flow characteristic non-fully
Linearly, when its lift rating curve can enter inelastic region when aperture reaches to a certain degree, (general inlet valve is opening in advance
Flow nonlinear characteristic is all shown as before valve standard-sized sheet and after about 40% valve position), now by the steam flow entering steam control valve
Vary less the most almost unchanged with aperture.No matter for the Steam Turbine of which kind of distribution way of steam, if next regulation valve exists
A upper regulation valve standard-sized sheet is then turned on later, then total lift of regulation valve group will be that complications are bigger with the characteristic line of flow
Wave, operation is unallowed, it is then desired to when previous regulation valve not yet fully opens, subsequent adjustment valve is necessary
Open in advance, with the nonlinear characteristic of valve, this amount opened in advance before compensating, be referred to as the degree of overlapping into steam control valve.
Degree of overlapping can divide into stroke degree of overlapping and pressure piling degree from physical concept.For instantly, regulate valve lap
Degree sets not yet there is clear and definite enforceable working specification or test standard.DL/T 824-2002 " the electro-hydraulic regulation of steam turbine
Systematic function checks and accepts directive/guide " define the allowed band of local velocity's diversity factor, but for electro-hydraulic tune unit, local velocity
The more difficult measurement of rate, and this index can only do and judge afterwards.Owing to stroke degree of overlapping does not generally possess exploitativeness, pressure at the scene
Degree of overlapping is mentioned more.From the point of view of existing document, it is considered that pressure piling degree than conveniently scope 10%-15% it
Between, value is affected by human factors bigger.Meanwhile, in the middle of in-service unit, except breathing out vapour 200MW grade unit and east vapour 600MW etc.
Outside level unit, not installing pressure-measuring-point after also having a big chunk unit septum valve, pressure piling degree is not known where to begin especially.
So, for this type of unit, regulation valve overlap sets and lacks enforcement standard or the foundation that wide spectrum is suitable for.
It is known that within the specific limits, properly increase degree of overlapping and help avoid the vigorous motion of regulating valve oil motivator,
But the degree of overlapping the biggest (unnecessary safe affluence increases accordingly) arranged, the restriction loss of regulation valve is the biggest, to steam turbine
The economical operation of group is the most unfavorable.Therefore, no matter which kind of joining vapour functional based method for, it is all Steam Distribution of Steam Turbine meter that degree of overlapping is adjusted
The most important thing calculated and adjust.
It is true that in Yun Hanging, less than normal for regulation valve overlap, it is easier to observe from steam turbine discharge characteristic
's；But the most too conservative for degree of overlapping setting, the most rich the most appropriate and restriction loss affects Steam Turbine heat consumption
Numerical quantization, still lacks test case.Meanwhile, forward and backward unlatching enter the steam control valve discharge characteristic line in overlapping region, valve position
Property degree is also one of problem of meriting attention.
To sum up described, current regulating valve degree of overlapping sets and lacks enforcement standard or the foundation that wide spectrum is suitable for, its pass broken through
Key point is to set up the regulation valve overlap numerical quantization to discharge characteristic Yu the influence degree of heat economy characteristic.
Summary of the invention
It is an object of the invention to, enter science identification and improvement, the present invention of steam control valve degree of overlapping in order to realize steam turbine
Propose a kind of steam turbine and enter steam control valve degree of overlapping identification and setting method, to ensure that Steam Turbine is in control valve position overlay region
Accurately controlling and safe efficient operation of territory inside admission flow.
In order to solve above-mentioned technical problem, the technical solution used in the present invention is: it is overlapping that a kind of steam turbine enters steam control valve
Degree identification and setting method, described method enters the steam control valve regulation in overlapping region, valve position according to the forward and backward unlatching of steam turbine
The Analysis and summary of the indexs such as valve stepping amplitude, flow linearity and valve point operating mode restriction loss, by Technical economic means from
Safety in operation and economy two aspect, the reasonability that steam turbine is entered steam control valve degree of overlapping carries out system, scientifically identification,
And formed and a set of both ensured that steam turbine was entered steam control valve and pacified in valve position overlapping region inside admission precise control of flew and governing system
Row for the national games, can reduce again the regulation valve overlap established standards that under valve point operating mode, the wide spectrum of the intrinsic restriction loss of the institution of distributing gas is suitable for
Or foundation.
One steam turbine of the present invention enters steam control valve degree of overlapping identification and setting method, comprises the following steps:
Step 1: carry out the field data test putting under regulation valve overlap operating mode；
Step 2: be worth on the basis of turbine governor valve standard-sized sheet VWO floor data, show that steam turbine is entering steam control valve valve position weight
Folded region actual enter vapour per unit flow, obtain " on the basis of VWO floor data the steam turbine of value actual enter vapour flux scale one
Value main valve bit instruction " numerical value corresponding relation；When regulation valve stepping amplitude or the flow linearity of overlapping region, valve position are inclined
When respective specified value, unit the most to be measured original regulation valve overlap sets and is considered defective.
Step 3: be removed the field data test regulating under valve overlap operating mode；In process of the test, according to steam turbine
Group enter steam control valve order opening process in all possible single or multiple enter steam control valve standard-sized sheet time maximum load capability,
Take its 90 percent for unit load to be measured, and maintain unit load constant, with 0.2MPa/5min for step rate, reduce continuously
Unit initial steam pressure, enters steam control valve and initiates valve position from nonlinear flow and be gradually opened into valve position full-gear, survey and calculate
The effective enthalpy drop of high pressure cylinder when increasing with control valve position instruction, system recept the caloric and to variablees such as pump enthalpy liters, and by transformation
Heat economy property calculation model, carrying out numerical quantization regulation valve valve point operating mode restriction loss affects journey for Steam Turbine heat consumption
Degree；For nozzle governing unit, should complete all possible single or multiple enter steam control valve initiate valve position from nonlinear flow
Data test to full-gear；For overload filling throttling join steam turbine group, should complete single or multiple enter vapour main inlet control valve
Valve position is initiateed to the data test under full-gear from nonlinear flow；
Step 4: according to step 3, draw single enter steam control valve valve bit instruction and " main valve bit instruction Steam Turbine heat consumption
Rate " numerical value corresponding relation；Subsequently, on this curve, the control valve position of the overlapping starting point that detecting and taking out machine group sets instructs institute
The difference of the unit heat consumption rate corresponding to corresponding unit heat consumption rate and valve position full-gear, evaluates regulation valve overlap pair with this
Impact in unit economy.
Described regulation valve stepping amplitude, is defined as the steam control valve that enters corresponding when unit enters vapour flow instruction amplification 1% and opens
Degree amplification size, can be defined in 5%-7%；When unit running process frequently occurs into steam control valve under valve point operating mode significantly
When rocking, it is necessary to reduce regulation valve stepping amplitude further, delay to regulate the valve unlatching speed in its nonlinear flow region.
Described flow linearity, is defined as unit and enters steam turbine actual flow increasing corresponding during vapour flow instruction amplification 1%
Width size, its reasonable value is 1:1；When unit deviates considerably from 1:1 quantitative relation in overlapping region, the valve position down-off linearity, should
The numerical value back mapping of the discharge characteristic entering steam control valve according to the forward and backward unlatching removed under regulation valve overlap operating mode, weight
New correction joins degree of overlapping parameter value in vapour function.
Described valve point operating mode restriction loss, be defined as under putting into regulation valve overlap operating mode previous enter at steam control valve
In overlapping starting point, unit heat consumption rate when subsequent adjustment valve is not yet turned on removing regulate under valve overlap operating mode previous
Enter steam control valve to fully open, the amplification size of unit heat consumption rate when subsequent adjustment valve is not yet turned on, usually more than 10kJ/
(kW.h).When valve point operating mode restriction loss occur bigger abnormal time, overlap should be redefined according to Field adjustment valve ruuning situation
Degree starting point.
The invention has the beneficial effects as follows, based on Principles of Steam Turbine, enter steam control valve at valve according to the forward and backward unlatching of steam turbine
The Analysis and summary of the indexs such as regulation valve stepping amplitude, flow linearity and the valve point operating mode restriction loss of overlapping region, position is logical
Crossing Technical economic means in terms of safety in operation and economy two, the reasonability that steam turbine is entered steam control valve degree of overlapping is carried out
System, scientifically identification, and form that a set of both to have ensured that steam turbine entered steam control valve accurate at valve position overlapping region inside admission flow
Control and governing system safe operation, the regulation that under valve point operating mode, the wide spectrum of the intrinsic restriction loss of the institution of distributing gas is suitable for can be reduced again
Valve overlap established standards or foundation, to realize the Steam Turbine accurate control at control valve position overlapping region inside admission flow
And safe efficient operation.
Accompanying drawing explanation
Fig. 1 is the basic procedure schematic diagram of the present invention；
Fig. 2 is in the detailed description of the invention of the present invention, and No. 6 steam turbine #1/#2 of certain factory enter steam control valve stepping amplitude schematic diagram；
Fig. 3 is in the detailed description of the invention of the present invention, and No. 6 steam turbine #1/#2 regulation valve #3 of certain factory regulate valve lap region
Flow linearity schematic diagram；
Fig. 4 is in the detailed description of the invention of the present invention, and No. 6 steam turbines of certain factory enter steam control valve restriction loss schematic diagram；
Fig. 5 is in the detailed description of the invention of the present invention, and No. 6 steam turbine #1/#2 regulation valve #3 of certain factory regulate valve lap region
Vapour curve is joined after adjusting.
Detailed description of the invention
Embodiment of the present invention one steam turbine enters steam control valve degree of overlapping identification and setting method, below in conjunction with the present invention
Accompanying drawing in embodiment, is clearly and completely described the technical scheme in the embodiment of the present invention:
No. 6 steam turbines of certain power plant are that the Asia of Dongfan Steam Turbine Factory manufacture N300-16.7/537/537-8 type (HP-IP combined casing) is faced
Boundary, resuperheat, two-cylinder two-exhaust, condensing turbine；This Steam Distribution of Steam Turbine mechanism uses nozzle governing mode, four high pressure
Enter steam control valve and be provided with two kinds of management valve modes of single valve/sequence valve.Under sequence valve mode, the unlatching valve sequence of regulation valve is
CV1/2→CV3→CV4。
Step 1: build unit to be measured enters steam flow amount mathematical character equation；Carry out putting under regulation valve overlap operating mode
Field data is tested.
Step 2: according to step 1, is worth on the basis of VWO floor data, show that steam turbine is entering steam control valve valve position overlap
Region actual enter vapour per unit flow, obtain " on the basis of VWO floor data the steam turbine of value actual enter vapour flux scale one
Value main valve bit instruction " numerical value corresponding relation；When regulation valve stepping amplitude or the flow linearity of overlapping region, valve position are inclined
When respective specified value, unit the most to be measured original regulation valve overlap sets and is considered defective.Fig. 2 is the concrete of the present invention
In embodiment, No. 6 steam turbine #1/#2 of certain factory enter steam control valve stepping amplitude schematic diagram；Fig. 3 is being embodied as of the present invention
In mode, No. 6 steam turbine #1/#2 regulation valve #3 of certain factory regulate valve lap zone flow linearity schematic diagram.
Step 3: build the transformation heat economy property calculation model of unit to be measured；It is removed regulating under valve overlap operating mode
Field data test.In process of the test, enter in steam control valve order opening process all possible single according to Steam Turbine
Or multiple enter steam control valve standard-sized sheet time maximum load capability, take its 90 percent for unit load to be measured, and maintain unit
Load is constant, with 0.2MPa/5min for step rate, reduces unit initial steam pressure continuously, enters steam control valve and initiate from nonlinear flow
Valve position is gradually opened into valve position full-gear, survey and calculate with control valve position instruction increase time the effective enthalpy drop of high pressure cylinder,
System recepts the caloric and to variablees such as pump enthalpy liters, and by transformation heat economy property calculation model, carrys out numerical quantization regulation valve valve point
Operating mode restriction loss is for the influence degree of Steam Turbine heat consumption.For nozzle governing unit, should complete all possible single
Or multiple enter steam control valve initiate valve position to the data test under full-gear from nonlinear flow；Overload filling throttling is joined
Steam turbine group, should complete single or multiple enter vapour main inlet control valve initiate valve position from nonlinear flow and survey to the data under full-gear
Examination.Fig. 4 is in the detailed description of the invention of the present invention, and No. 6 steam turbines of certain factory enter steam control valve restriction loss schematic diagram.
Step 4: according to step 3, draw single enter steam control valve valve bit instruction with " main valve bit instruction Steam Turbine heat
Consumption rate " numerical value corresponding relation；Subsequently, the control valve position instruction of the overlapping starting point that detecting and taking out machine group sets on this curve
The difference of the unit heat consumption rate corresponding to corresponding unit heat consumption rate and valve position full-gear, evaluates regulation valve overlap with this
Impact for unit economy.
In conjunction with Fig. 2-Fig. 4, it can be seen that this unit is in the regulation of #1/#2 regulation valve #3 control valve position overlapping region
Valve stepping amplitude, flow linearity and valve point operating mode restriction loss all deviate setting, therefore, according to index of correlation, to #1/#2
The pre-set parameter of regulation valve #3 control valve position overlapping region re-starts to be adjusted.Fig. 5 is being embodied as of the present invention
In mode, vapour curve is joined after adjusting in No. 6 steam turbine #1/#2 regulation valve #3 regulation valve lap regions by certain factory.Should after adjusting
Unit is in regulation valve stepping amplitude, flow linearity and the valve point work of #1/#2 regulation valve #3 control valve position overlapping region
Condition restriction loss all meets setting.
Claims (4)
1. a steam turbine enters steam control valve degree of overlapping identification and setting method, it is characterised in that described method includes following step
Rapid:
Step 1: carry out the field data test putting under regulation valve overlap operating mode；
Step 2: be worth on the basis of turbine governor valve standard-sized sheet VWO floor data, show that steam turbine is entering steam control valve valve position weight
Folded region actual enter vapour per unit flow, obtain " on the basis of VWO floor data the steam turbine of value actual enter vapour flux scale one
Value main valve bit instruction " numerical value corresponding relation；When regulation valve stepping amplitude or the flow linearity of overlapping region, valve position are inclined
When respective specified value, unit the most to be measured original regulation valve overlap sets and is considered defective；
Step 3: be removed the field data test regulating under valve overlap operating mode；In process of the test, enter according to Steam Turbine
Steam control valve order opening process in all possible single or multiple enter steam control valve standard-sized sheet time maximum load capability, take it
90 percent is unit load to be measured, and maintains unit load constant, with 0.2MPa/5min for step rate, reduces unit continuously
Initial steam pressure, enters steam control valve and initiates valve position from nonlinear flow and be gradually opened into valve position full-gear, survey and calculate with tune
The effective enthalpy drop of high pressure cylinder when joint valve valve bit instruction increases, system recept the caloric and rise variable to pump enthalpy, and by transformation heat economy
Property calculation model, carrys out the numerical quantization regulation valve valve point operating mode restriction loss influence degree for Steam Turbine heat consumption；For
Nozzle governing unit, should complete all possible single or multiple enter steam control valve initiate valve position to standard-sized sheet shape from nonlinear flow
Data test under state；For overload filling throttling join steam turbine group, should complete single or multiple enter vapour main inlet control valve from non-linear
Flow initiates valve position to the data test under full-gear；
Step 4: according to step 3, draw single enter steam control valve valve bit instruction and " main valve bit instruction Steam Turbine heat consumption
Rate " numerical value corresponding relation；Subsequently, on this curve, the control valve position of the overlapping starting point that detecting and taking out machine group sets instructs institute
The difference of the unit heat consumption rate corresponding to corresponding unit heat consumption rate and valve position full-gear, evaluates regulation valve overlap pair with this
Impact in unit economy.
The most according to claim 1, a kind of steam turbine enters steam control valve degree of overlapping identification and setting method, it is characterised in that institute
State regulation valve stepping amplitude, be defined as steam control valve aperture of entering corresponding when unit enters vapour flow instruction amplification 1% and have a big increase
Little, 5%-7% can be defined in；When unit running process frequently occurs significantly rock under valve point operating mode into steam control valve time,
It is necessary to reduce regulation valve stepping amplitude further, delays to regulate the valve unlatching speed in its nonlinear flow region.
The most according to claim 1, a kind of steam turbine enters steam control valve degree of overlapping identification and setting method, it is characterised in that institute
State flow linearity, be defined as unit and enter steam turbine actual flow amplification size corresponding during vapour flow instruction amplification 1%, its
Reasonable value is 1:1；When unit deviates considerably from 1:1 quantitative relation in overlapping region, the valve position down-off linearity, should be according to removal
The numerical value back mapping entering steam control valve discharge characteristic of the forward and backward unlatching under regulation valve overlap operating mode, again revises and joins vapour
Degree of overlapping parameter value in function.
The most according to claim 1, a kind of steam turbine enters steam control valve degree of overlapping identification and setting method, it is characterised in that institute
State valve point operating mode restriction loss, under putting into regulation valve overlap operating mode previous enter steam control valve be in overlapping starting point,
Unit heat consumption rate when subsequent adjustment valve is not yet turned on remove regulation valve overlap operating mode under previous enter steam control valve complete
Full open, the amplification size of unit heat consumption rate when subsequent adjustment valve is not yet turned on, usually more than 10kJ/(kW.h)；Work as valve
Point operating mode restriction loss occur bigger abnormal time, degree of overlapping starting point should be redefined according to Field adjustment valve ruuning situation.
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| CN201610372927.7A CN106014500A (en) | 2016-05-31 | 2016-05-31 | Method for identifying and setting degree-of-overlapping of steam admission regulating valves for steam turbine |
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| CN201610372927.7A CN106014500A (en) | 2016-05-31 | 2016-05-31 | Method for identifying and setting degree-of-overlapping of steam admission regulating valves for steam turbine |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107035433A (en) * | 2017-04-07 | 2017-08-11 | 贵州电网有限责任公司电力科学研究院 | A kind of steam turbine pitch looseness fault inline diagnosis method based on signal hard measurement |
| CN109446736A (en) * | 2018-12-19 | 2019-03-08 | 国网江西省电力有限公司电力科学研究院 | A kind of Steam Turbine matches construction method and the application of vapour end wide area heat-economy map |
| CN109918729A (en) * | 2019-01-31 | 2019-06-21 | 国网江西省电力有限公司电力科学研究院 | A kind of Steam Turbine is hybrid to match vapour Function Synthesis setting method |
| CN110332021A (en) * | 2019-06-11 | 2019-10-15 | 国网江西省电力有限公司电力科学研究院 | A kind of DEH system adjusting valve overlap standardization setting method |
| CN110735668A (en) * | 2019-10-22 | 2020-01-31 | 国网江西省电力有限公司电力科学研究院 | indirect method steam distribution function setting value simplification realization method |
| CN110761852A (en) * | 2019-09-27 | 2020-02-07 | 国网江西省电力有限公司电力科学研究院 | Steam turbine regulating valve stroke simulation modeling method |
| CN111737859A (en) * | 2020-06-02 | 2020-10-02 | 国网江西省电力有限公司电力科学研究院 | Improved steam turbine set variable-pressure operation consumption difference quantitative calculation model construction method |
| CN111881492A (en) * | 2020-07-23 | 2020-11-03 | 西安西热节能技术有限公司 | CFD (computational fluid dynamics) method-based steam turbine valve steam distribution management function generation method |
| CN112145241A (en) * | 2020-09-08 | 2020-12-29 | 国网江西省电力有限公司电力科学研究院 | Flow characteristic fine setting method for multi-sequence valve control mode of steam turbine set |
| CN112989613A (en) * | 2021-03-18 | 2021-06-18 | 南昌科晨电力试验研究有限公司 | Steam turbine set simulation calculation method based on component characteristic parameters |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107035433A (en) * | 2017-04-07 | 2017-08-11 | 贵州电网有限责任公司电力科学研究院 | A kind of steam turbine pitch looseness fault inline diagnosis method based on signal hard measurement |
| CN107035433B (en) * | 2017-04-07 | 2019-05-07 | 贵州电网有限责任公司电力科学研究院 | A kind of steam turbine pitch looseness fault inline diagnosis method based on signal hard measurement |
| CN109446736A (en) * | 2018-12-19 | 2019-03-08 | 国网江西省电力有限公司电力科学研究院 | A kind of Steam Turbine matches construction method and the application of vapour end wide area heat-economy map |
| CN109918729A (en) * | 2019-01-31 | 2019-06-21 | 国网江西省电力有限公司电力科学研究院 | A kind of Steam Turbine is hybrid to match vapour Function Synthesis setting method |
| CN109918729B (en) * | 2019-01-31 | 2022-12-30 | 国网江西省电力有限公司电力科学研究院 | Comprehensive setting method for hybrid steam distribution function of steam turbine set |
| CN110332021A (en) * | 2019-06-11 | 2019-10-15 | 国网江西省电力有限公司电力科学研究院 | A kind of DEH system adjusting valve overlap standardization setting method |
| CN110761852A (en) * | 2019-09-27 | 2020-02-07 | 国网江西省电力有限公司电力科学研究院 | Steam turbine regulating valve stroke simulation modeling method |
| CN110735668B (en) * | 2019-10-22 | 2021-12-10 | 国网江西省电力有限公司电力科学研究院 | Method for simplifying setting value of indirect steam distribution function |
| CN110735668A (en) * | 2019-10-22 | 2020-01-31 | 国网江西省电力有限公司电力科学研究院 | indirect method steam distribution function setting value simplification realization method |
| CN111737859A (en) * | 2020-06-02 | 2020-10-02 | 国网江西省电力有限公司电力科学研究院 | Improved steam turbine set variable-pressure operation consumption difference quantitative calculation model construction method |
| CN111737859B (en) * | 2020-06-02 | 2024-03-12 | 国网江西省电力有限公司电力科学研究院 | Improved turbine unit variable-pressure operation consumption difference quantitative calculation model construction method |
| CN111881492A (en) * | 2020-07-23 | 2020-11-03 | 西安西热节能技术有限公司 | CFD (computational fluid dynamics) method-based steam turbine valve steam distribution management function generation method |
| CN111881492B (en) * | 2020-07-23 | 2021-11-23 | 西安西热节能技术有限公司 | CFD (computational fluid dynamics) method-based steam turbine valve steam distribution management function generation method |
| CN112145241A (en) * | 2020-09-08 | 2020-12-29 | 国网江西省电力有限公司电力科学研究院 | Flow characteristic fine setting method for multi-sequence valve control mode of steam turbine set |
| CN112145241B (en) * | 2020-09-08 | 2023-03-14 | 国网江西省电力有限公司电力科学研究院 | Flow characteristic fine setting method of multi-sequence valve control mode of steam turbine set |
| CN112989613A (en) * | 2021-03-18 | 2021-06-18 | 南昌科晨电力试验研究有限公司 | Steam turbine set simulation calculation method based on component characteristic parameters |
| CN112989613B (en) * | 2021-03-18 | 2022-11-08 | 南昌科晨电力试验研究有限公司 | Steam turbine set simulation calculation method based on component characteristic parameters |
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