CN106707927A - Steam turbine cylinder water-ingress risk assessment and diagnosis method and system - Google Patents
Steam turbine cylinder water-ingress risk assessment and diagnosis method and system Download PDFInfo
- Publication number
- CN106707927A CN106707927A CN201611014597.0A CN201611014597A CN106707927A CN 106707927 A CN106707927 A CN 106707927A CN 201611014597 A CN201611014597 A CN 201611014597A CN 106707927 A CN106707927 A CN 106707927A
- Authority
- CN
- China
- Prior art keywords
- steam turbine
- temperature
- alarm
- risk assessment
- data
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/048—Monitoring; Safety
-
- 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
- F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Testing And Monitoring For Control Systems (AREA)
Abstract
The present invention provides a steam turbine cylinder water-ingress risk assessment and diagnosis method and a steam turbine cylinder water-ingress risk assessment and diagnosis system. The steam turbine cylinder water-ingress risk assessment and diagnosis method comprises the steps of acquiring data of relevant components of a steam turbine cylinder, importing the acquired data of the components into a computer, analyzing the acquired data and outputting the analyzed data, judging conditions of the components according to the analyzed data and outputting an alarm command, and sending out an alarm signal according to the alarm command. The steam turbine cylinder water-ingress risk assessment and diagnosis method and the steam turbine cylinder water-ingress risk assessment and diagnosis system are conductive to controlling a risk source as soon as possible and eliminating the risk source in the early stage, effectively protect the safety of the steam turbine, and reduce the labor intensity of inventory supervision of the operator on duty.
Description
Technical field
The present invention relates to the technical field of thermal power generation corporations' visual plant security control, particularly steam turbine water inlet
Risk assessment diagnostic method and system.
Background technology
Steam turbine is one of capital equipment of thermal power generation corporations, recently as generating set to overcritical, Large Copacity
The trend development of unit, steam turbine mechanical efficiency more and more higher, internal structure is more and more accurate, and cylinder is with the sound between rotor
Gap is less and less, and this just proposes requirement higher to the security control of steam turbine.
Steam turbine equipment build is huge, and mechanism is complicated, and under most operating modes, cylinder is with rotor all in the condition of high temperature.When
When the precautionary measures and monitoring not in place, steam turbine has the possibility that water inlet or cold vapour accident by mistake occur, and makes the metal under high temperature
Part is cooled down suddenly and drastically shunk, and produces very big thermal stress and thermal deformation, relative expansion is drastically changed, and unit shakes strongly
Dynamic, sound part axially and radially rubs, and causes serious steam turbine equipment to damage.Cylinder water inlet is harm steam turbine machine
The significant trouble of group safe and stable operation, is electricity power enterprise's strictly one of pernicious abnormal accident of control and strick precaution.《Prevent electric power
Produce 25 important requirements of major accident》（State's electricity sends out ［ 2000 ］ No. 589）In be distinctly claimed power-generating enterprise and should make
Severe action is ordered to be taken precautions against.
At present, no matter the old unit of subcritical low capacity, or postcritical new large-sized unit, for preventing Turbine Steam
The detection means of cylinder water inlet generally takes passive mode, is all the tube wall temperature for detecting cylinder body, even if new large-sized unit
Also the temperature point quantity of cylinder body is simply increased.There are two big serious disadvantages in the detection means of this passive type
End：First, when cylinder tube wall temperature starts abnormal decline, actually at this moment cylinder has been intake, and does not play super at all
The effect of preceding protection steam turbine, the safety guarantee effect to steam turbine is poor.2nd, this passive detection is most without alarm,
So the important task of monitoring cylinder water inlet risk is just almost complete by artificially undertaking.Because operator on duty will face substantial amounts of monitoring content
And operation task, cylinder water inlet risk early period of origination is difficult to discovery in time, and the equipment safety to steam turbine buried huge hidden danger.
One is provided in Baidu library《Steam turbine water inlet main cause and the precautionary measures》Article, article mentions
19 kinds prevent the major measure that turbine water induction should be taken, including：Water feed apparatus are installed, cylinder metal temperature note is periodically carried out
Record, improves the methods such as draining system, personal monitoring.These Prevention methods are more manual operations, it is impossible to enough to accomplish automatic pre-
Anti- and alarm.
The content of the invention
Important risk monitoring it is an object of the invention to steam turbine is intake is changed into actively super from PASSIVE SURVEILLANCE
Preceding defence；Become as a set of perfect continuous monitoring by computer controls assesses control system by the interruption monitoring of operator on duty.
By computer by the automatic detection to relevant parameter, the change according to professional rule to abnormal parameters trend carries out instant computing
Treatment, advanced output integrated assesses risk, is easy to operator on duty early by risk source control and eliminates in bud, more preferably
The safety of ground protection steam turbine.On the one hand the prison disk labour intensity of operator on duty had both been alleviated, other works can have preferably been put into
Make, on the other hand, and sufficiently make use of computer this new tool.
The first aspect of the present invention provides a kind of steam turbine water inlet risk assessment diagnostic method, including collection steam turbine
The data of cylinder associated components, the described method comprises the following steps：
Step 1：The data of the part that importing is collected；
Step 2：Analyze data is calculated using the data and export；
Step 3：According to analyze data judgement part situation and export alarm command；
Step 4：Alarm command is received, and alarm signal is sent according to alarm command.
Preferably, the part include cylinder, high-pressure heater, low heater, oxygen-eliminating device, condenser, jet chimney,
Steam line, extraction line, in be pressed into steam chest, middle pressure steam chest, middle pressure outer shell, in be pressed into steam pipe, air intake and draining valve
It is at least one.
In any of the above-described scheme preferably, the data include temperature, hydraulic pressure, water level, time and aperture at least
It is a kind of.
In any of the above-described scheme preferably, the analyze data includes temperature drop speed, temperature and normal value
At least one of depreciation, water level value, duration, angle value and pressure differential at temperature in difference, upper and lower temperature difference, certain hour.
In any of the above-described scheme preferably, the step 3 is to be compared with predetermined threshold value using the analyze data
Compared with, and export judged result.
In any of the above-described scheme preferably, the judged result includes the early warning of output excessive risk, output critical risk
At least one of early warning and output devoid of risk prompting.
In any of the above-described scheme preferably, any controlled tunnel wall temperature fall off rate is met more than the first scheduled rate
Threshold value, and the difference of the wall temperature and normal value, when being more than the first preset temperature threshold value, the judged result is the output excessive risk
Early warning.
In any of the above-described scheme preferably, cylinder any point wall temperature fall off rate is met more than the first scheduled rate threshold
Value, and the difference of the wall temperature and normal value, when being more than the first preset temperature threshold value, the judged result is pre- for the output excessive risk
It is alert.
In any of the above-described scheme preferably, meet any place's tube wall or cylinder temperature upper and lower temperature difference and be more than with the difference of normal value
First preset temperature threshold value, is computed the accumulative Bianization Zhi ⊿ t of temperature in the first preset time range more than or equal to the 3rd default temperature
During degree threshold value, the judged result is the output excessive risk early warning.
In any of the above-described scheme preferably, meet any heater water level to respectively reach default I values high, preset II high
Value, III values high are preset, the duration is more than the first preset time threshold, and height adds crisis draining valve valve seat opening to be less than the
During one predetermined angle threshold value, the judged result is the output excessive risk early warning.
In any of the above-described scheme preferably, meet No. 5 or No. 6 low positions that add water and a low threshold that adds water is preset more than first
Value, when the duration is more than the first preset time threshold, the judged result is the output excessive risk early warning.
In any of the above-described scheme preferably, meet No. 7 or No. 8 low positions that add water and a low threshold that adds water is preset more than second
Value, when the duration is more than the first preset time threshold, the judged result is the output excessive risk early warning.
In any of the above-described scheme preferably, meet deaerator level and reach default III values high, the duration is more than the
One preset time threshold, when oxygen-eliminating device accident wicket valve seat opening is less than the first predetermined angle threshold value, the judged result is
The output excessive risk early warning.
In any of the above-described scheme preferably, condenser water level is met more than the first default cryophorus watermark threshold, is held
When the continuous time is more than the second preset time threshold, the judged result is the output excessive risk early warning.
In any of the above-described scheme preferably, controlled tunnel wall temperature fall off rate is met more than or equal to the second scheduled rate
Threshold value but less than the first scheduled rate threshold value, and the wall temperature and normal value difference more than or equal to the second preset temperature threshold less than the
During one preset temperature threshold, the judged result is the output critical risk early warning.
In any of the above-described scheme preferably, cylinder any point wall temperature fall off rate is met more than or equal to the 3rd default speed
Rate threshold value but it is less than more than or equal to the second preset temperature threshold with the difference of normal value less than the first scheduled rate threshold value, and the wall temperature
During the first preset temperature threshold, the judged result is the output critical risk early warning.
In any of the above-described scheme preferably, meet any place's tube wall or cylinder temperature upper and lower temperature difference and be more than with the difference of normal value
The first preset temperature threshold value is less than equal to second temperature threshold, the accumulative Bianization Zhi ⊿ of temperature in the first preset time range are computed
When t is by no more than the 3rd preset temperature threshold, the judged result is the output critical risk early warning.
In any of the above-described scheme preferably, default I values high are respectively reached, is preset while meeting any heater water level
When II values high, default III values high, the judged result is the output critical risk early warning.
In any of the above-described scheme preferably, No. 5 or No. 6 low positions that add water are met when reaching default III values high, this is low to add
Water level III values alarm high sends, and the judged result is the output critical risk early warning.
In any of the above-described scheme preferably, No. 7 or No. 8 low positions that add water are met when reaching default III values high, this is low to add
Water level III values alarm high sends, and the judged result is the output critical risk early warning.
In any of the above-described scheme preferably, when meeting deaerator level and reach default III values high, deaerator level is high
III value alarms send, and the judged result is the output critical risk early warning.
In any of the above-described scheme preferably, when meeting condenser water level more than the second default cryophorus watermark threshold,
The judged result is the output critical risk early warning.
In any of the above-described scheme preferably, when following condition is met simultaneously, the judged result is the output
Devoid of risk is pointed out.
A, controlled tunnel wall temperature fall off rate are less than the second scheduled rate threshold value, and the wall temperature is less than with the difference of normal value
Second preset temperature threshold；
B, cylinder any point wall temperature fall off rate are less than the 3rd scheduled rate threshold value, and the wall temperature and normal value difference less than the
Two preset temperature thresholds；
The difference of c, any place's tube wall or cylinder temperature upper and lower temperature difference and normal value is less than second temperature threshold, be computed first it is default when
Between in the range of the accumulative Bianization Zhi ⊿ t of temperature will be less than the 4th preset temperature threshold；
D, all positions that add water high are respectively less than default III values high, and are sent without the height position III values alarm signal high that adds water；
E, No. 5, No. 6 low positions that add water are respectively less than default III values high, and are sent without water level III values alarm signal high；
F, No. 7, No. 8 low positions that add water are respectively less than default III values high, and are sent without water level III values alarm signal high；
G, deaerator level are less than presets III values high, and oxygen-eliminating device is without water level III values alarm high；
H, condenser water level preset cryophorus watermark threshold less than the 3rd, and without the alarm high of condenser water level.
In any of the above-described scheme preferably, the step 3 is according to the judged result determines whether output
Alarm command.
In any of the above-described scheme preferably, the alarm command is at least one of flashing light alarm and audio alert.
The second aspect of the present invention provides steam turbine water inlet risk assessment diagnostic system, including collection steam turbine
The module of associated components data, also comprising with lower module：
Import modul：The data of the part that importing is collected；
Analysis module：Analyze data is calculated using the data and export；
Diagnostic module：According to analyze data judgement part situation, and export alarm command；
Alarm module：Alarm command is received, and alarm signal is sent according to alarm command.
Preferably, the part include cylinder, high-pressure heater, low heater, oxygen-eliminating device, condenser, jet chimney,
Steam line, extraction line, in be pressed into steam chest, middle pressure steam chest, middle pressure outer shell, in be pressed into steam pipe, air intake and draining valve
It is at least one.
In any of the above-described scheme preferably, the data include temperature, hydraulic pressure, water level, time and aperture at least
It is a kind of.
In any of the above-described scheme preferably, the analyze data includes temperature drop speed, temperature and normal value
At least one of depreciation, water level value, duration, angle value and pressure differential at temperature in difference, upper and lower temperature difference, certain hour.
In any of the above-described scheme preferably, the diagnostic module is had and is carried out with pre- threshold value using the analyze data
Relatively and export the function of judged result.
In any of the above-described scheme preferably, the judged result includes the early warning of output excessive risk, output critical risk
At least one of early warning and output devoid of risk prompting.
In any of the above-described scheme preferably, the diagnostic module is configured to meet reduction of speed under any controlled tunnel wall temperature
When rate is more than the first preset temperature threshold value more than the first scheduled rate threshold value, and the wall temperature with the difference of normal value, the judgement knot
Fruit is the output excessive risk early warning.
In any of the above-described scheme preferably, the diagnostic module is configured to meet cylinder any point wall temperature fall off rate
When being more than the first preset temperature threshold value with the difference of normal value more than the first scheduled rate threshold value, and the wall temperature, the judged result
It is the output excessive risk early warning.
In any of the above-described scheme preferably, the diagnostic module is configured to meet any place's tube wall or cylinder temperature temperature up and down
Difference is more than the first preset temperature threshold value with the difference of normal value, is computed the accumulative Bianization Zhi ⊿ t of temperature in the first preset time range
During more than or equal to the 3rd preset temperature threshold value, the judged result is the output excessive risk early warning.
In any of the above-described scheme preferably, the diagnostic module is configured to meet any heater water level and respectively reaches
I values high are preset, II values high is preset, is preset III values high, the duration is more than the first preset time threshold, and the height plus crisis are dredged
When water valve valve seat opening is less than the first predetermined angle threshold value, the judged result is the output excessive risk early warning.
In any of the above-described scheme preferably, the diagnostic module is configured to meet No. 5 or No. 6 low positions that add water more than the
One default low plus watermark threshold, when the duration is more than the first preset time threshold, the judged result is the output wind high
Dangerous early warning.
In any of the above-described scheme preferably, the diagnostic module is configured to meet No. 7 or No. 8 low positions that add water more than the
Two default low plus watermark thresholds, when the duration is more than the first preset time threshold, the judged result is the output wind high
Dangerous early warning.
In any of the above-described scheme preferably, the diagnostic module is configured to meet deaerator level and reaches default height
III values, the duration is more than the first preset time threshold, and oxygen-eliminating device accident wicket valve seat opening is less than the first predetermined angle threshold
During value, the judged result is the output excessive risk early warning.
In any of the above-described scheme preferably, the diagnostic module is configured to meet condenser water level and is preset more than first
Cryophorus watermark threshold, during duration about the second preset time threshold, the judged result is pre- for the output excessive risk
It is alert.
In any of the above-described scheme preferably, the diagnostic module is configured to meet controlled tunnel wall temperature fall off rate big
In equal to the second scheduled rate threshold value but less than the first scheduled rate threshold value, and the wall temperature is more than or equal to second with the difference of normal value
When preset temperature threshold is less than the first preset temperature threshold, the judged result is the output critical risk early warning.
In any of the above-described scheme preferably, the diagnostic module is configured to meet cylinder any point wall temperature fall off rate
More than or equal to the 3rd scheduled rate threshold value but less than the first scheduled rate threshold value, and the wall temperature and normal value difference more than or equal to the
When two preset temperature thresholds are less than the first preset temperature threshold, the judged result is the output critical risk early warning.
In any of the above-described scheme preferably, the diagnostic module is configured to meet any place's tube wall or cylinder temperature temperature up and down
Difference is less than the first preset temperature threshold value with the difference of normal value more than or equal to second temperature threshold, is computed the first preset time range
When the accumulative Bianization Zhi ⊿ t of interior temperature are by no more than the 3rd preset temperature threshold, the judged result is the output critical risk
Early warning.
In any of the above-described scheme preferably, the diagnostic module is configured to while meeting any heater water level difference
When reaching default I values high, presetting II values high, preset III values high, the judged result is the output critical risk early warning.
In any of the above-described scheme preferably, the diagnostic module be configured to meet No. 5 or No. 6 low positions that add water reach it is pre-
If during III values high, the judged result is the output critical risk early warning.
In any of the above-described scheme preferably, the diagnostic module be configured to meet No. 7 or No. 8 low positions that add water reach it is pre-
If during III values high, the judged result is the output critical risk early warning.
In any of the above-described scheme preferably, the diagnostic module is configured to meet deaerator level and reaches default height
During III values, the judged result is the output critical risk early warning.
In any of the above-described scheme preferably, the diagnostic module is configured to meet condenser water level and is preset more than second
During cryophorus watermark threshold, the judged result is the output critical risk early warning.
In any of the above-described scheme preferably, the diagnostic module is configured to when while meeting following condition, described
Judged result is the output devoid of risk prompting.
A, controlled tunnel wall temperature fall off rate are less than the second scheduled rate threshold value, and the wall temperature is less than with the difference of normal value
Second preset temperature threshold；
B, cylinder any point wall temperature fall off rate are less than the 3rd scheduled rate threshold value, and the wall temperature and normal value difference less than the
Two preset temperature thresholds；
The difference of c, any place's tube wall or cylinder temperature upper and lower temperature difference and normal value is less than second temperature threshold, be computed first it is default when
Between in the range of the accumulative Bianization Zhi ⊿ t of temperature will be less than the 4th preset temperature threshold；
D, all positions that add water high are respectively less than default III values high, and are sent without the height position III values alarm signal high that adds water；
E, No. 5, No. 6 low positions that add water are respectively less than default III values high, and are sent without water level III values alarm signal high；
F, No. 7, No. 8 low positions that add water are respectively less than default III values high, and are sent without water level III values alarm signal high；
G, deaerator level are less than presets III values high, and oxygen-eliminating device is without water level III values alarm high；
H, condenser water level preset cryophorus watermark threshold less than the 3rd, and without the alarm high of condenser water level.
In any of the above-described scheme preferably, the diagnostic module to have determined whether according to the judged result and exports
The function of the alarm command.
In any of the above-described scheme preferably, it is characterised in that：The alarm command is flashing light alarm and audio alert
At least one of.
Above-mentioned steam turbine water inlet risk assessment diagnostic method and system give full play to the advantage of computer system, to receiving
Monitoring parameter carries out full-time monitoring, analysis, assessment, allows cylinder water inlet risk to be changed into controllable, and operator on duty can be allowed pair to set at any time
Standby health status is very clear, helps operator on duty risk control in bud, significantly mitigates the work of operator on duty
Intensity and responsibility.
Brief description of the drawings
Fig. 1 is the flow chart of the embodiment according to steam turbine of the invention water inlet risk assessment diagnostic method.
Fig. 2 is the principle of the embodiment according to steam turbine of the invention water inlet risk assessment diagnostic system module
Figure.
Fig. 3 is the excessive risk early warning figure according to steam turbine of the invention water inlet risk assessment diagnostic system.
Specific embodiment
Embodiment one
As shown in Figure 1-2, step 100 is performed, steam turbine all parts is collected by acquisition module 200（Including cylinder itself, height
Pressure heater, low heater, oxygen-eliminating device, condenser, jet chimney, steam line, extraction line, in be pressed into steam chest, middle pressure
Steam chest, middle pressure outer shell, in be pressed into steam pipe, air intake, draining valve）Data（Including wall temperature, pressure, time, water level）, sequentially hold
Row step 110 and step 120, import modul 210 import the parts data for collecting from acquisition module 200, are sent to analysis
Module 220, analysis module is analyzed to parts data, exports analyze data.Perform step 130, diagnostic module 230 according to point
Analysis data judge whether to meet excessive risk early warning output condition.If one of following condition can be met（A, any controlled tunnel
Wall temperature fall off rate>20 DEG C/min, and less than normal value>20℃；B, cylinder any point wall temperature fall off rate>20 DEG C/min, and
Less than normal value>20℃；C, any place's tube wall or cylinder temperature upper and lower temperature difference>, more than 20 DEG C, being computed 10min Nei ⊿ t will for normal value
≥50℃；D, any heater water level I values 160mm high, II values 210mm high, III values 610mm high trigger alarm simultaneously, when continuing
Between>15s, and the height plus crisis draining valve valve seat opening<10%；E, No. 5 or No. 6 low positions that add water>138mm, duration>15s；
F, No. 7 or No. 8 low positions that add water>120mm, duration>15s；G, deaerator level III values 1630mm high, duration>15s,
Oxygen-eliminating device accident wicket valve seat opening<10%；H, condenser water level >=2500mm, duration>30s.）, then sequentially step is performed
Rapid 131 and step 132, diagnostic module 230 sends output excessive risk early warning signal to alarm module 240, and alarm module 240 sends
Red blinking words are alarmed and audio alert, point out the XX excessive risk alarms of XX positions（Such as the alarm of heater wall temperature excessive risk）.
If one of above-mentioned condition can not be met, step 140 is performed, diagnostic module 230 judges whether to meet critical wind
Dangerous early warning output condition.If one of following condition can be met（A, controlled tunnel wall temperature fall off rate >=10 DEG C/min but<20
DEG C/min, and less than normal value >=10 ~<20℃；B, cylinder any point wall temperature fall off rate >=5 DEG C/min but<20 DEG C/min but
And less than normal value >=10 ~<20℃；C, any place's tube wall or cylinder temperature upper and lower temperature difference>Normal value >=10 DEG C but<20 DEG C, it is computed
10min Nei ⊿ t are by ≯ 50 DEG C；D, any heater water level I values 160mm high, II values 210mm high, III values 610mm high are simultaneously full
Foot, triggering alarm；E, No. 5 or No. 6 low positions up to III values high that add water（138mm）, the low position that the adds water III values alarm high sends；f、7
Number or No. 8 low positions that add water up to III values high（120mm）, the low position that the adds water III values alarm high sends；G, deaerator level reach III high
Value（1630mm）, deaerator level III values alarm high sends；H, condenser water level >=2000mm.）, then step 141 is sequentially performed
With step 142, diagnostic module 230 sends output critical risk early warning signal to alarm module 240, and alarm module 240 sends orange
Chromatic flicker word is alarmed and audio alert, points out XX position XX alarms（Such as cryophorus water level for 2100mm critical risks are alarmed）.
If one of above-mentioned condition can not be met, step 150 is performed, diagnostic module 230 judges whether it is to meet calm
Dangerous implied condition.Meet following condition simultaneously（A, controlled tunnel wall temperature fall off rate<10 DEG C/min, and less than normal value<10
℃；B, cylinder any point wall temperature fall off rate<5 DEG C/min, and less than normal value<10℃；C, any place's tube wall or cylinder temperature are up and down
The temperature difference>Within 10 DEG C of normal value, being computed 10min Nei ⊿ t will<20℃；D, all positions that add water high are equal<610mm, and add without height
Water level III alarm signals high send；E, No. 5, No. 6 low positions that add water it is equal<138mm, and without water level III values alarm signal hair high
Go out；F, No. 7, No. 8 low positions that add water it is equal<120mm, and sent without water level III values alarm signal high；G, deaerator level<
1630mm, and oxygen-eliminating device is without water level III values alarm high；H, condenser water level<1450mm, and without the alarm high of condenser water level.）,
Then perform step 170, output devoid of risk prompting.
If above-mentioned condition can not be met simultaneously, step 160, alarm free output prompt message are performed.
Embodiment two
As Figure 2-3, step 300 is performed, the called data of analysis module 220 is simultaneously analyzed.Perform step 310, diagnostic module 230
The situation of carrying out 1 judges.The data that situation 1 is transferred are controlled tunnel wall temperature fall off rate and controlled tunnel wall temperature and normal value
Difference.Condition 11 in situation 1 is controlled tunnel wall temperature fall off rate>20 DEG C/min, and with the difference of normal value>20℃；Condition 12
For controlled tunnel wall temperature fall off rate >=10 DEG C/min but<20 DEG C/min, and with difference >=10 of normal value ~<20℃；Condition 13 is
Controlled tunnel wall temperature fall off rate<10 DEG C/min, and with the difference of normal value<10℃.When condition 11 is met, step 341 is performed
With step 342, diagnostic module 230 output excessive risk early warning, alarm module 240 send red blinking words alarm and voice reporting
It is alert, point out the XX excessive risk alarms of XX positions（Such as the alarm of heater wall temperature excessive risk）.When condition 12 is met, step 343 is performed
With step 344, the output critical risk early warning of diagnostic module 230, alarm module 240 sends the alarm of orange blinking text and voice reporting
It is alert, point out XX position XX alarms（Such as cryophorus water level for 2100mm critical risks are alarmed）.
When condition 13 is met, then step 320 is performed, carry out situation 2 and judge.The data that situation 2 is transferred are prison in cylinder
The difference of monitoring point wall temperature and normal value in measuring point wall temperature fall off rate and cylinder.Condition 21 in situation 2 is monitoring point in cylinder
Wall temperature fall off rate>20 DEG C/min, and with the difference of normal value>20℃；Condition 22 is test point wall temperature fall off rate >=5 in cylinder
DEG C/min but<20 DEG C/min, and with difference >=10 of normal value ~<20℃；Condition 23 is monitoring point wall temperature fall off rate in cylinder<5
DEG C/min, and with the difference of normal value<10℃.When condition 21 is met, step 341 and step 342 are performed, diagnostic module 230 is defeated
Go out excessive risk early warning, alarm module 240 sends red blinking words alarm and audio alert, point out the XX excessive risk alarms of XX positions
（Such as the alarm of heater wall temperature excessive risk）.When condition 22 is met, step 343 and step 344 are performed, diagnostic module 230 is exported
Critical risk early warning, alarm module 240 sends orange blinking text alarm and audio alert, points out XX position XX alarms（As coagulated
Hydrophone water level is alarmed for 2100mm critical risks）.
When condition 23 is met, then step 330 is performed, carry out situation 3 and judge.The data that situation 3 is transferred are tube wall or cylinder
Warm upper and lower temperature difference and 10min Nei ⊿ t values.Condition 31 in situation 3 is tube wall or cylinder temperature upper and lower temperature difference>Normal value more than 20 DEG C,
10min Nei ⊿ t are computed by >=50 DEG C；Condition 32 is tube wall or cylinder temperature upper and lower temperature difference>Normal value >=10 DEG C but<20 DEG C, through meter
10min Nei ⊿ t are calculated by ≯ 50 DEG C；Condition 13 is tube wall or cylinder temperature upper and lower temperature difference>Within 10 DEG C of normal value, it is computed in 10min
⊿ t will<20℃.When condition 31 is met, step 341 and step 342, the output excessive risk early warning of diagnostic module 230, alarm are performed
Module 240 sends red blinking words alarm and audio alert, points out the XX excessive risk alarms of XX positions（Such as heater wall temperature wind high
Danger alarm）.When condition 32 is met, step 343 and step 344, the output critical risk early warning of diagnostic module 230, alarm are performed
Module 240 sends orange blinking text alarm and audio alert, points out XX position XX alarms（Such as cryophorus water level for 2100mm faces
Boundary's risk alarm）.
When condition 33 is met, then step 340 is performed, carry out situation 4 and judge.The data that situation 4 is transferred are heater water
Position, duration and the height plus crisis draining valve valve seat opening.Condition 41 in situation 4 is heater water level I values 160mm high,
II values 210mm high, III values 610mm high meet simultaneously, the duration>15s, and the height plus crisis draining valve valve seat opening<10%；
Condition 42 is heater water level I values 160mm high, II values 210mm high, III values 610mm high satisfaction simultaneously；Condition 43 is heater
The height position that adds water it is equal<610mm, and sent without the height position III alarm signals high that add water.When condition 41 is met, step 341 is performed
With step 342, diagnostic module 230 output excessive risk early warning, alarm module 240 send red blinking words alarm and voice reporting
It is alert, point out the XX excessive risk alarms of XX positions（Such as the alarm of heater wall temperature excessive risk）.When condition 42 is met, step 343 is performed
With step 344, the output critical risk early warning of diagnostic module 230, alarm module 240 sends the alarm of orange blinking text and voice reporting
It is alert, point out XX position XX alarms（Such as cryophorus water level for 2100mm critical risks are alarmed）.
When condition 43 is met, then step 350 is performed, carry out situation 5 and judge.The data that situation 5 is transferred are No. 5 or No. 6
It is low to add water position and duration.Condition 51 in situation 1 is No. 5 or No. 6 low positions that add water>138mm, duration>15s；Condition
52 is No. 5 or No. 6 low positions up to III values high that add water（138mm）, the low position that the adds water III values alarm high sends；Condition 53 be No. 5,6
Number low position that adds water is equal<138mm, and sent without water level III values alarm signal high.When condition 51 is met, perform step 341 and
Step 342, the output excessive risk early warning of diagnostic module 230, alarm module 240 sends red blinking words alarm and audio alert,
The XX excessive risk alarms of prompting XX positions（Such as the alarm of heater wall temperature excessive risk）.When condition 52 is met, step 343 and step are performed
Rapid 344, the output critical risk early warning of diagnostic module 230, alarm module 240 sends orange blinking text alarm and audio alert,
Prompting XX position XX alarms（Such as cryophorus water level for 2100mm critical risks are alarmed）.
When condition 53 is met, then step 360 is performed, carry out situation 6 and judge.The data that situation 6 is transferred are controlled tunnel
Wall temperature fall off rate and controlled tunnel wall temperature and the normal difference for instructing.Condition 61 in situation 6 is No. 7 or No. 8 low positions that add water>
120mm, duration>15s；Condition 62 is No. 7 or No. 8 low positions up to III values high that add water（120mm）, the low position that the adds water III values high
Alarm sends；Condition 63 is No. 7, No. 8 low positions that add water are equal<120mm, and sent without water level III values alarm signal high.Work as satisfaction
During condition 61, step 341 and step 342 are performed, the output excessive risk early warning of diagnostic module 230, alarm module 240 sends red sudden strain of a muscle
Bright word alarm and audio alert, point out the XX excessive risk alarms of XX positions（Such as the alarm of heater wall temperature excessive risk）.When meeting bar
During part 62, step 343 and step 344 are performed, the output critical risk early warning of diagnostic module 230, alarm module 240 sends orange sudden strain of a muscle
Bright word alarm and audio alert, point out XX position XX alarms（Such as cryophorus water level for 2100mm critical risks are alarmed）.
When condition 63 is met, then step 370 is performed, carry out situation 7 and judge.The data that situation 7 is transferred are oxygen-eliminating device water
Position III values high, duration and oxygen-eliminating device accident wicket valve seat opening.Condition 71 in situation 7 is deaerator level III high
Value 1630mm, duration>15s, oxygen-eliminating device accident wicket valve seat opening<10%；Condition 72 is that deaerator level reaches III high
Value（1630mm）, deaerator level III values alarm high sends；Condition 73 is deaerator level<1630mm, and oxygen-eliminating device is without water level
III values alarm high.When condition 71 is met, step 341 and step 342, the output excessive risk early warning of diagnostic module 230, report are performed
Alert module 240 sends red blinking words alarm and audio alert, points out the XX excessive risk alarms of XX positions（As heater wall temperature is high
Risk alarm）.When condition 72 is met, step 343 and step 344, the output critical risk early warning of diagnostic module 230, report are performed
Alert module 240 sends orange blinking text alarm and audio alert, points out XX position XX alarms（If cryophorus water level is 2100mm
Critical risk is alarmed）.
When condition 73 is met, then step 380 is performed, carry out situation 8 and judge.The data that situation 8 is transferred are condenser water
Position and duration.Condition 81 in situation 8 is condenser water level >=2500mm, duration>30s；Condition 82 is condenser
Water level >=2000mm；Condition 83 is condenser water level<1450mm, and without the alarm high of condenser water level.When condition 81 is met, hold
Row step 341 and step 342, the output excessive risk early warning of diagnostic module 230, alarm module 240 send red blinking words alarm
And audio alert, point out the XX excessive risk alarms of XX positions（Such as the alarm of heater wall temperature excessive risk）.When condition 82 is met, perform
Step 343 and step 344, the output critical risk early warning of diagnostic module 230, alarm module 240 send orange blinking text alarm
And audio alert, point out XX position XX alarms（Such as cryophorus water level for 2100mm critical risks are alarmed）.
When condition 83 is met, then step 390, the output devoid of risk prompting of diagnostic module 230 are performed.
Above-described embodiment illustrates that the present invention gives full play to the advantage of computer system, and full-time prison is carried out to monitored parameter
Control, analysis, assessment, allow cylinder water inlet risk to be changed into controllable, can allow the operator on duty can at any time to the mesh of health status one of equipment
So, help operator on duty risk control in bud, significantly mitigate the labour intensity and responsibility of operator on duty.
Claims (10)
1. the data of steam turbine water inlet risk assessment diagnostic method, including collection steam turbine associated components, its feature
It is：It is further comprising the steps of：
Step 1：The data of the part that importing is collected；
Step 2：Analyze data is calculated using the data and export；
Step 3：According to analyze data judgement part situation and export alarm command；
Step 4：Alarm command is received, and alarm signal is sent according to alarm command.
2. steam turbine as claimed in claim 1 water inlet risk assessment diagnostic method, it is characterised in that：The part includes
Cylinder, high-pressure heater, low heater, oxygen-eliminating device, condenser, jet chimney, steam line, extraction line, in be pressed into steam chest,
Middle pressure steam chest, middle pressure outer shell, in be pressed at least one of steam pipe, air intake and draining valve.
3. steam turbine as claimed in claim 1 water inlet risk assessment diagnostic method, it is characterised in that：The data include
At least one of temperature, hydraulic pressure, water level, time and aperture.
4. steam turbine as claimed in claim 1 water inlet risk assessment diagnostic method, it is characterised in that：The analyze data
Depreciation at temperature, water level value in difference, upper and lower temperature difference, certain hour including temperature drop speed, temperature and normal value, when continuing
Between, at least one of angle value and pressure differential.
5. steam turbine as claimed in claim 1 water inlet risk assessment diagnostic method, it is characterised in that：The step 3 is
It is compared using the analyze data and predetermined threshold value, and exports judged result.
6. steam turbine as claimed in claim 5 water inlet risk assessment diagnostic method, it is characterised in that：The judged result
Including at least one of the early warning of output excessive risk, output critical risk early warning and output devoid of risk prompting.
7. steam turbine as claimed in claim 6 water inlet risk assessment diagnostic method, it is characterised in that：Meet any controlled
Pipeline wall temperature fall off rate is more than the first scheduled rate threshold value, and the wall temperature is more than the first preset temperature threshold value with the difference of normal value
When, the judged result is the output excessive risk early warning.
8. steam turbine as claimed in claim 6 water inlet risk assessment diagnostic method, it is characterised in that：Meet cylinder any
Point wall temperature fall off rate is more than the first scheduled rate threshold value, and the wall temperature is more than the first preset temperature threshold value with the difference of normal value
When, the judged result is the output excessive risk early warning.
9. steam turbine as claimed in claim 6 water inlet risk assessment diagnostic method, it is characterised in that：Meet any place's pipe
Wall or cylinder temperature upper and lower temperature difference are more than the first preset temperature threshold value with the difference of normal value, are computed temperature in the first preset time range
When accumulative Bianization Zhi ⊿ t are more than or equal to the 3rd preset temperature threshold value, the judged result is the output excessive risk early warning.
10. the module of steam turbine water inlet risk assessment diagnostic system, including collection steam turbine associated components data, its
It is characterised by：Also include with lower module：
Import modul：The data of the part that importing is collected；
Analysis module：Analyze data is calculated using the data and export；
Diagnostic module：According to analyze data judgement part situation, and export alarm command；
Alarm module：Alarm command is received, and alarm signal is sent according to alarm command.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611014597.0A CN106707927A (en) | 2016-11-18 | 2016-11-18 | Steam turbine cylinder water-ingress risk assessment and diagnosis method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611014597.0A CN106707927A (en) | 2016-11-18 | 2016-11-18 | Steam turbine cylinder water-ingress risk assessment and diagnosis method and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106707927A true CN106707927A (en) | 2017-05-24 |
Family
ID=58940494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611014597.0A Pending CN106707927A (en) | 2016-11-18 | 2016-11-18 | Steam turbine cylinder water-ingress risk assessment and diagnosis method and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106707927A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110704964A (en) * | 2019-09-16 | 2020-01-17 | 中国神华能源股份有限公司国华电力分公司 | Steam turbine operation state diagnosis method and device, electronic equipment and storage medium |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2442033C (en) * | 2001-03-28 | 2005-03-15 | Aloys Wobben | Method for monitoring a wind energy plant |
| CN102213116A (en) * | 2011-05-06 | 2011-10-12 | 上海发电设备成套设计研究院 | Device and method for monitoring and controlling security risk of turbine bearing in on-line manner |
-
2016
- 2016-11-18 CN CN201611014597.0A patent/CN106707927A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2442033C (en) * | 2001-03-28 | 2005-03-15 | Aloys Wobben | Method for monitoring a wind energy plant |
| CN102213116A (en) * | 2011-05-06 | 2011-10-12 | 上海发电设备成套设计研究院 | Device and method for monitoring and controlling security risk of turbine bearing in on-line manner |
Non-Patent Citations (3)
| Title |
|---|
| 孟秉贵: "阳城发电厂汽轮机防进水保护的设计与运行", 《山西电力》 * |
| 张建玲等: "大型汽轮机组防进水保护监测诊断***的研制", 《自动化博览》 * |
| 曾德良等: "大型汽轮机防进水智能诊断***的研究", 《发电设备》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110704964A (en) * | 2019-09-16 | 2020-01-17 | 中国神华能源股份有限公司国华电力分公司 | Steam turbine operation state diagnosis method and device, electronic equipment and storage medium |
| CN110704964B (en) * | 2019-09-16 | 2022-11-25 | 中国神华能源股份有限公司国华电力分公司 | Steam turbine operation state diagnosis method and device, electronic device and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109786872A (en) | A kind of lithium ion battery thermal runaway early warning system and method | |
| CN104331631B (en) | A kind of Hydropower Unit running status remote diagnosis decision-making technique | |
| CN106983970A (en) | A kind of fire early warning and fire control unit and method | |
| CN104299659A (en) | Method, device and system for monitoring running state of nuclear power plant | |
| EP2375081A2 (en) | System and method for monitoring a compressor | |
| CN102606464A (en) | Real-time monitoring and preventing method for surge and stall of axial flow fan | |
| MX2013004432A (en) | Clustered wellhead trunkline protection and testing system with esp speed controller and emergency isolation valve. | |
| CN104483963A (en) | Method for performing remote analysis and diagnosis decision-making on operation state at bearing bushing temperature of hydroelectric generating set | |
| CN105257983A (en) | Apparatus and method for indicating status of hydrogen tank based on vehicle fire | |
| CN106707927A (en) | Steam turbine cylinder water-ingress risk assessment and diagnosis method and system | |
| CN108941495B (en) | Automatic handling method for continuous casting breakout accident based on liquid level automatic control | |
| CN113634355A (en) | Coal mill coal blockage fault judgment and fault self-healing method and system | |
| CN109298700B (en) | Method and system for judging abnormal change of operation parameters of thermal power generating unit in real time | |
| CN109375575A (en) | A kind of band-type brake control method and system | |
| CN109404742A (en) | Gas pipeline valve chamber main pipeline booster monitoring, alarming and protective device, method | |
| JP2009115090A (en) | Automatic detection and notification of degradation of turbine internal component | |
| CN203741383U (en) | Cooling water control system | |
| CN110513160B (en) | Steam turbine water inlet and cold inlet safety alarm and early warning method | |
| CN108843549B (en) | Control method of water pump | |
| CN110533891B (en) | Real-time alarm method and system for working condition of top cover bolt of water turbine of pumped storage power station | |
| CN109268689A (en) | A kind of Ferrous Metallurgy gas piping scene leaks site monitoring system | |
| CN106438040A (en) | Diesel engine cylinder scoring fault early warning device and diesel engine cylinder scoring fault early warning method | |
| CN108071598A (en) | A kind of safety monitoring control system of oil field oil transfer pump | |
| CN208456675U (en) | Feed Water Pump Turbine Control System | |
| CN112147926B (en) | Centralized control system and control method for wellhead gas recovery device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170524 |