CN101825274B - Device for on-line monitoring residue calendar life of low-temperature pressure-containing member outside furnace and method thereof - Google Patents
Device for on-line monitoring residue calendar life of low-temperature pressure-containing member outside furnace and method thereof Download PDFInfo
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- CN101825274B CN101825274B CN201010102190XA CN201010102190A CN101825274B CN 101825274 B CN101825274 B CN 101825274B CN 201010102190X A CN201010102190X A CN 201010102190XA CN 201010102190 A CN201010102190 A CN 201010102190A CN 101825274 B CN101825274 B CN 101825274B
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000012544 monitoring process Methods 0.000 title claims abstract description 21
- 230000035882 stress Effects 0.000 claims description 32
- 238000012806 monitoring device Methods 0.000 claims description 11
- 230000008646 thermal stress Effects 0.000 claims description 9
- 238000009825 accumulation Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 8
- 230000003044 adaptive effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
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Abstract
The invention discloses a device for on-line monitoring the residue calendar life of a low-temperature pressure-containing member outside a furnace and a method thereof. The device comprises a compute server of the residue calendar life, a supervisory information monitor device and a decentralized control device of a power station boiler, wherein the compute server of the residue calendar life is connected with the decentralized control device of the power station boiler through the supervisory information monitor device. The method comprises the following steps: reading on-line measure point data of the power station boiler; determining the least safe allowance of the residue calendar life of the low-temperature pressure-containing member outside the furnace; and controlling the residue calendar life of the low-temperature pressure-containing member outside the furnace. The invention provides the device for on-line monitoring the residue calendar life of the low-temperature pressure-containing member outside the furnace and realizes the on-line calculation and control of the residue calendar life of the low-temperature pressure-containing member outside the furnace.
Description
Technical field
The present invention relates to station boiler low-temperature pressure-containing member outside furnace residue calendar life-span on-line monitoring device and method, belong to the station boiler technical field.
Background technology
The low-temperature pressure-containing member outside furnace of station boiler easily produces low-cycle fatigue crack, is the critical component that influences the safe operation of station boiler.The characteristics of low-temperature pressure-containing member outside furnaces such as the drum of station boiler or steam-water separator, low temperature collection case, low temperature steam-water pipe are that operating pressure height, the size of bearing are big, involve great expense.In startup, blowing out and the load change process of station boiler, because it is even along parts radial direction temperature distributing disproportionation, produce bigger thermal stress and transient-state low-cycle fatigue life loss,, will shorten the residue calendar life-span of station boiler low-temperature pressure-containing member outside furnace if control is improper.Prior art can't realize the on-line monitoring in the residue calendar life-span of station boiler low-temperature pressure-containing member outside furnace.
Summary of the invention
The purpose of this invention is to provide a kind of station boiler low-temperature pressure-containing member outside furnace residue calendar life-span on-line monitoring device and method, realize the on-line monitoring in the residue calendar life-span of station boiler low-temperature pressure-containing member outside furnace.
In order to realize above purpose, technical scheme of the present invention provides a kind of low-temperature pressure-containing member outside furnace residue calendar life-span on-line monitoring device, it is characterized in that, comprise residue calendar life-span calculation server, residue calendar life-span calculation server is connected with station boiler distributed control apparatus (DCS) by level of factory monitor message device (SIS device).
The present invention also provides the low-temperature pressure-containing member outside furnace residue calendar life-span on-line monitoring method that adopts said apparatus, it is characterized in that, adopt C language compilation station boiler low-temperature pressure-containing member outside furnace residue calendar Calculation for life machine software, operate on the residue calendar life-span calculation server, be applied to the residue calendar life-span on-line monitoring of station boiler low-temperature pressure-containing member outside furnace, its concrete steps are:
The first step: read the online measuring point data of station boiler:
Residue calendar life-span calculation server is every Δ τ=1 second in second to 300, reads pressure and temperature from the station boiler boiler circuit working medium of station boiler distributed control apparatus, the data of the wall temperature of low-temperature pressure-containing member outside furnace from level of factory monitor message device;
Second step: calculate the thermal stress of station boiler low-temperature pressure-containing member outside furnace and the mechanical stress that causes by power pressure:
Pressure and temperature at the working medium of boiler circuit, and the data variation of the wall temperature of low-temperature pressure-containing member outside furnace, adopt thick cyclinder model of the prior art, at the inside and outside wall temperature difference and the tangential thermal stress σ of pressure-containing member outside boiler of line computation station boiler low-temperature pressure-containing member outside
θ th, thermal stress σ radially
RthWith axial thermal stress σ
ZthAt the data variation of the pressure and the low-temperature pressure-containing member outside furnace wall temperature of station boiler boiler circuit working medium, adopt the thick cyclinder model of prior art, the tangential mechanical stress σ that causes by power pressure at line computation station boiler low-temperature pressure-containing member outside
θ pMechanical stress σ radially
RpWith axial mechanical stress σ
Zp
The 3rd step: the monitoring value of calculating the stress intensity of station boiler low-temperature pressure-containing member outside furnace:
The computing formula of the monitoring value of the stress intensity of low-temperature pressure-containing member outside furnace is:
S＝max{|(σ
θth+σ
θp)-(σ
rth+σ
rp)|；|(σ
rth+σ
rp)-(σ
zth+σ
zp)|；|(σ
zth+σ
zp)-(σ
θth+σ
θp)|}；
The 4th step: the low-cycle fatigue strain amplitude that calculates the station boiler low-temperature pressure-containing member outside furnace:
Adopt following formula, calculate the low-cycle fatigue strain amplitude ε of station boiler low-temperature pressure-containing member outside furnace symmetrical cycle
a:
In the formula, S is the monitoring value of the stress intensity of low-temperature pressure-containing member outside furnace, E
0Be elastic modelling quantity under the low-cycle fatigue curve test temperature of low-temperature pressure-containing member outside furnace material, E
tElastic modelling quantity for low-temperature pressure-containing member outside furnace material under the operating wall temperature;
The 5th step: the low-cycle fatigue life that calculates the station boiler low-temperature pressure-containing member outside furnace:
Adopt prior art, use the low-cycle fatigue curve ε of station boiler low-temperature pressure-containing member outside furnace material
a=F (N
f), calculate 1 time every Δ τ, draw the low-cycle fatigue life N of station boiler low-temperature pressure-containing member outside furnace symmetrical cycle
f
The 6th step: the transient-state low-cycle fatigue life loss that calculates the station boiler low-temperature pressure-containing member outside furnace:
Adopt following formula, calculate the transient-state low-cycle fatigue life loss d (t) of pressure-containing member outside station boiler:
d(t)＝(2N
f)
-1×100％；
The 7th step: the low-cycle fatigue life loss of determining the peak stress intensity correspondence:
Adopt prior art; whether the stress intensity of judging low-temperature pressure-containing member outside furnace is the peak stress intensity that is in startup, shutdown and load change process; if stress intensity is a peak stress intensity, the low-cycle fatigue life loss d of station boiler low-temperature pressure-containing member outside furnace peak stress intensity correspondence
p=d (t); If stress intensity is not a peak stress intensity, the low-cycle fatigue life loss d of station boiler low-temperature pressure-containing member outside furnace peak stress intensity correspondence
p=0;
The 8th step: calculate low-temperature pressure-containing member outside furnace accumulation low-cycle fatigue life loss:
Station boiler low-temperature pressure-containing member outside furnace accumulation low-cycle fatigue life E
NComputing formula as follows:
E
N＝E
N0+d
p
In the formula, E
N0For the last time is read the accumulation low-cycle fatigue life loss that number calculates;
The 9th step: calculate low-temperature pressure-containing member outside furnace residue calendar life-span percentage:
Station boiler low-temperature pressure-containing member outside furnace residue calendar life-span percentage E
RComputing formula as follows:
E
R＝(100-E
N)％；
The tenth step: calculate the average annual life consumption speed of low-temperature pressure-containing member outside furnace:
The computing formula of the average annual life consumption speed of station boiler low-temperature pressure-containing member outside furnace e is expressed as:
e＝1/y×100％
In the formula, y is the projected life of station boiler low-temperature pressure-containing member outside furnace, and unit is year;
The 11 step: calculate the low-temperature pressure-containing member outside furnace residue calendar life-span:
The residue calendar life-span R of station boiler low-temperature pressure-containing member outside furnace
LComputing formula as follows:
R
L＝E
R/e
The 12 step: calculate low-temperature pressure-containing member outside furnace and used a year number:
Adopt prior art, calculate station boiler from going into operation to the calendar hourage PH in use of current time, station boiler has used a year number y
0Computing formula be expressed as:
y
0＝PH/8760；
The 13 step: calculate the low-temperature pressure-containing member outside furnace serviceable bife:
Station boiler low-temperature pressure-containing member outside furnace serviceable bife L
aComputing formula as follows:
L
a＝y
0+R
L；
The 14 step: calculate low-temperature pressure-containing member outside furnace residue calendar life-span safe clearance:
The safe clearance L in station boiler low-temperature pressure-containing member outside furnace residue calendar life-span
sComputing formula as follows:
L
s＝L
a-y；
In the formula, y is the projected life of station boiler low-temperature pressure-containing member outside furnace, and unit is year;
The 15 step: determine low-temperature pressure-containing member outside furnace least residue calendar life safe clearance:
After the residue calendar life-span safe clearance of n low temperature pressure-containing member is determined outside station boiler, the least residue calendar life safe clearance L of station boiler low-temperature pressure-containing member outside furnace
mComputing formula as follows:
L
m＝min{L
1，L
2，...，L
n}；
The 16 step: control low-temperature pressure-containing member outside furnace residue calendar life-span:
Least residue calendar life safe clearance L according to the station boiler low-temperature pressure-containing member outside furnace
mOnline result of calculation, the measure in control station boiler low-temperature pressure-containing member outside furnace residue calendar life-span is: if L
m≤-5 years, in startup, shutdown and the load change process of station boiler, reduce the load changing rate of station boiler and the rate of change of main steam temperature, the minimizing amplitude is all 0.4～0.6 times of former numerical value, to prolong the service life of station boiler low-temperature pressure-containing member outside furnace; If-5 years＜L
m≤ 0 year, in startup, shutdown and the load change process of station boiler, reduce the load changing rate of station boiler and the rate of change of main steam temperature, the minimizing amplitude is all 0.1～0.3 times of former numerical value, to prolong the service life of station boiler low-temperature pressure-containing member outside furnace; If 0 year＜L
m≤ 5 years, the startup of station boiler, shutdown and and the load change process in, the main steam temperature rate of change of station boiler and load changing rate are pressed the setting operation of station boiler operating standard; If 5 years＜L
m≤ 10 years, in startup, shutdown and the load change process of station boiler, increase the rate of change of station boiler load changing rate and main steam temperature, increasing degree is all 0.1～0.3 times of former numerical value, to adapt to the load variations requirement of electrical network, improve the performance driving economy of station boiler; If L
m＞10 years; in startup, shutdown and the load change process of station boiler, increase the rate of change of station boiler load changing rate and main steam temperature, increasing degree is all 0.4～0.6 times of former numerical value; change requirement fast with the load that adapts to electrical network, improve the performance driving economy of station boiler.
The present invention has following characteristics:
(1) on calculation server, installs and uses the dedicated computer software of the station boiler low-temperature pressure-containing member outside furnace residue calendar adaptive life monitor value of C language compilation, according to time interval Δ τ=1 second in second to 300 of software set, from level of factory monitor message device (SIS), read the online measuring point data of the station boiler of in-service monitoring, the monitoring value in the residue calendar life-span of online real-time calculating station boiler low-temperature pressure-containing member outside furnace;
(2) level of factory monitor message device (SIS device) has two kinds of functions at residue calendar life-span controlling party mask, the one, the online measuring point data of station boiler is provided for residue calendar adaptive life monitor and control device, the 2nd, station boiler low-temperature pressure-containing member outside furnace residue calendar life-span control measure are transferred to the distributed control apparatus (DCS) of station boiler, be used to refer to the operation and the operation of conduction station boiler.
Advantage of the present invention has provided the on-line monitoring device in station boiler low-temperature pressure-containing member outside furnace residue calendar life-span, realized the station boiler low-temperature pressure-containing member outside furnace residue calendar life-span in line computation and control.When if the residue calendar life-span of station boiler low-temperature pressure-containing member outside furnace, safe clearance was bigger than normal or less than normal, in the residue calendar life-span that the load changing rate by online real-time control station boiler and the rate of change of main steam temperature rationally use the station boiler low-temperature pressure-containing member outside furnace, reached the technique effect that ensures station boiler low-temperature pressure-containing member outside furnace safety and economic operation by the residue calendar life-span of on-line monitoring station boiler low-temperature pressure-containing member outside furnace.
Description of drawings
Fig. 1 is the block diagram of low-temperature pressure-containing member outside furnace residue calendar life-span on-line monitoring device of the present invention;
Fig. 2 is the flow chart of low-temperature pressure-containing member outside furnace residue calendar life-span on-line monitoring method of the present invention;
The computer software block diagram that Fig. 3 adopts for calculation server of the present invention;
Fig. 4 is the schematic diagram of station boiler low-temperature pressure-containing member outside furnace residue calendar life-span result of calculation;
Fig. 5 is the schematic diagram of station boiler low-temperature pressure-containing member outside furnace residue calendar life-span safe clearance result of calculation.
The specific embodiment
Specify the present invention below in conjunction with embodiment.
Embodiment
As shown in Figure 1, block diagram for low-temperature pressure-containing member outside furnace residue calendar life-span on-line monitoring device of the present invention, station boiler low-temperature pressure-containing member outside furnace residue calendar life-span on-line monitoring device of the present invention is made up of the distributed control apparatus of residue calendar life-span calculation server and operation computer software, level of factory monitor message device and station boiler thereon.Residue calendar life-span calculation server is connected with the distributed control apparatus of station boiler by level of factory monitor message device.
As shown in Figure 2, flow chart for low-temperature pressure-containing member outside furnace residue calendar life-span on-line monitoring method of the present invention, as shown in Figure 3, computer software block diagram for calculation server employing of the present invention, this software is installed on the residue calendar life-span calculation server, be applied to the station boiler low-temperature pressure-containing member outside furnace residue calendar life-span in line computation and control.
For certain model 300MW station boiler, to low-temperature pressure-containing member outside furnace, adopt device shown in Figure 1, flow chart shown in Figure 2 and computer software shown in Figure 3, draw the schematic diagram of station boiler low-temperature pressure-containing member outside furnace residue calendar life-span result of calculation shown in Figure 4 and the schematic diagram of station boiler low-temperature pressure-containing member outside furnace residue calendar life-span safe clearance result of calculation shown in Figure 5.
The first step: read the online measuring point data of station boiler:
Low-temperature pressure-containing member outside furnace residue calendar Calculation for life server is every Δ τ=60 seconds, read the pressure and temperature from the station boiler boiler circuit working medium of the distributed control apparatus of station boiler and the data of the wall temperature of pressure-containing member outside boiler from level of factory monitor message device;
Second step, the 3rd step, the 4th step, the 5th step, the 6th step, the 7th step and the 8th step: from going into operation on April 6th, 2009 the accumulation low-cycle fatigue life loss E of 3 low-temperature pressure-containing member outside furnaces of this model 300MW station boiler
NResult of calculation list in table 1;
The 9th step: from going into operation on October 25th, 2008 the residue calendar life-span percentage E of 3 low-temperature pressure-containing member outside furnaces of this model 300MW station boiler
RResult of calculation list in table 1;
The tenth step and the 11 step: be y=30 the projected life of 3 low-temperature pressure-containing member outside furnaces of this model 300MW station boiler, e=1/30=3.3333%, the residue calendar life-span R of 3 low-temperature pressure-containing member outside furnaces
LResult of calculation list in table 1 and be presented at Fig. 4;
The 12 step: from going into operation on April 6th, 2009, this model 300MW station boiler has used year number to be y at the calendar hourage PH=105847h that uses
0=PH/8760=12.08;
The 13 step and the 14 step: the serviceable bife L of 3 low-temperature pressure-containing member outside furnaces of this model 300MW station boiler
aSafe clearance L with the residue calendar life-span
sResult of calculation list in table 1, the safe clearance in the residue calendar life-span of 3 low-temperature pressure-containing member outside furnaces is presented at Fig. 5;
The 15 step: in the result of calculation of the residue calendar life-span safe clearance of 3 low-temperature pressure-containing member outside furnaces of this model, least residue calendar life safe clearance L
m=3.99 years;
The 16 step: in the result of calculation of this 3 low-temperature pressure-containing member outside furnace life-spans of model safe clearance, because least residue calendar life safe clearance is between 0～5 year, the control measure in the residue calendar life-span of this model 300MW station boiler are: in the load change process of station boiler, the rate of change of station boiler load changing rate and main steam temperature is pressed the predetermined operation of station boiler operating standard, to guarantee the safe operation of station boiler long period.
Adopt the on-line monitoring device in station boiler low-temperature pressure-containing member outside furnace residue calendar life-span provided by the invention; realized the monitoring value in the residue calendar life-span of online quantitative calculating 300MW station boiler low-temperature pressure-containing member outside furnace; controlling this model 300MW station boiler according to residue calendar life-span safe clearance is starting; shut down and the load changing rate of load change process and the rate of change of main steam temperature; make the residue calendar life-span of this model station boiler low-temperature pressure-containing member outside furnace be in slave mode, reached employing residue calendar life-span control device and monitored the station boiler low-temperature pressure-containing member outside furnace residue calendar life-span; the technique effect that instructs operation and ensure station boiler low-temperature pressure-containing member outside furnace safety and economic operation.
[table 1]
Claims (1)
1. low-temperature pressure-containing member outside furnace residue calendar life-span on-line monitoring method, adopt low-temperature pressure-containing member outside furnace residue calendar life-span on-line monitoring device, described low-temperature pressure-containing member outside furnace residue calendar life-span on-line monitoring device comprises residue calendar life-span calculation server, residue calendar life-span calculation server is connected with the station boiler distributed control apparatus by level of factory monitor message device, it is characterized in that, adopt C language compilation station boiler low-temperature pressure-containing member outside furnace residue calendar Calculation for life machine software, operate on the residue calendar life-span calculation server, be applied to the residue calendar life-span on-line monitoring of station boiler low-temperature pressure-containing member outside furnace, its concrete steps are:
The first step: read the online measuring point data of station boiler:
Residue calendar life-span calculation server is every Δ τ=1 second in second to 300, reads pressure and temperature from the station boiler boiler circuit working medium of station boiler distributed control apparatus, the data of the wall temperature of low-temperature pressure-containing member outside furnace from level of factory monitor message device;
Second step: calculate the thermal stress of station boiler low-temperature pressure-containing member outside furnace and the mechanical stress that causes by power pressure:
Pressure and temperature at the working medium of boiler circuit, and the data variation of the wall temperature of low-temperature pressure-containing member outside furnace, adopt thick cyclinder model of the prior art, at the inside and outside wall temperature difference and the tangential thermal stress σ of pressure-containing member outside boiler of line computation station boiler low-temperature pressure-containing member outside
θ th, thermal stress σ radially
RthWith axial thermal stress σ
ZthAt the data variation of the pressure and the low-temperature pressure-containing member outside furnace wall temperature of station boiler boiler circuit working medium, adopt the thick cyclinder model of prior art, the tangential mechanical stress σ that causes by power pressure at line computation station boiler low-temperature pressure-containing member outside
θ pMechanical stress σ radially
RpWith axial mechanical stress σ
Zp
The 3rd step: the monitoring value of calculating the stress intensity of station boiler low-temperature pressure-containing member outside furnace:
The computing formula of the monitoring value of the stress intensity of low-temperature pressure-containing member outside furnace is:
S＝max{|(σ
θth+σ
θp)-(σ
rth+σ
rp)|；|(σ
rth+σ
rp)-(σ
zth+σ
zp)|；|(σ
zth+σ
zp)-(σ
θth+σ
θp)|}；
The 4th step: the low-cycle fatigue strain amplitude that calculates the station boiler low-temperature pressure-containing member outside furnace:
Adopt following formula, calculate the low-cycle fatigue strain amplitude ε of station boiler low-temperature pressure-containing member outside furnace symmetrical cycle
a:
In the formula, S is the monitoring value of the stress intensity of low-temperature pressure-containing member outside furnace, E
0Be elastic modelling quantity under the low-cycle fatigue curve test temperature of low-temperature pressure-containing member outside furnace material, E
tElastic modelling quantity for low-temperature pressure-containing member outside furnace material under the operating wall temperature;
The 5th step: the low-cycle fatigue life that calculates the station boiler low-temperature pressure-containing member outside furnace:
Adopt prior art, use the low-cycle fatigue curve ε of station boiler low-temperature pressure-containing member outside furnace material
a=F (N
f), calculate 1 time every Δ τ, draw the low-cycle fatigue life N of station boiler low-temperature pressure-containing member outside furnace symmetrical cycle
f
The 6th step: the transient-state low-cycle fatigue life loss that calculates the station boiler low-temperature pressure-containing member outside furnace:
Adopt following formula, calculate the transient-state low-cycle fatigue life loss d (t) of pressure-containing member outside station boiler:
d(t)＝(2N
f)
-1×100％；
The 7th step: the low-cycle fatigue life loss of determining the peak stress intensity correspondence:
Adopt prior art; whether the stress intensity of judging low-temperature pressure-containing member outside furnace is the peak stress intensity that is in startup, shutdown and load change process; if stress intensity is a peak stress intensity, the low-cycle fatigue life loss d of station boiler low-temperature pressure-containing member outside furnace peak stress intensity correspondence
p=d (t); If stress intensity is not a peak stress intensity, the low-cycle fatigue life loss d of station boiler low-temperature pressure-containing member outside furnace peak stress intensity correspondence
p=0;
The 8th step: calculate low-temperature pressure-containing member outside furnace accumulation low-cycle fatigue life loss:
Station boiler low-temperature pressure-containing member outside furnace accumulation low-cycle fatigue life E
NComputing formula as follows:
E
N＝E
N0+d
p
In the formula, E
N0For the last time is read the accumulation low-cycle fatigue life loss that number calculates;
The 9th step: calculate low-temperature pressure-containing member outside furnace residue calendar life-span percentage:
Station boiler low-temperature pressure-containing member outside furnace residue calendar life-span percentage E
RComputing formula as follows:
E
R＝(100-E
N)％；
The tenth step: calculate the average annual life consumption speed of low-temperature pressure-containing member outside furnace:
The computing formula of the average annual life consumption speed of station boiler low-temperature pressure-containing member outside furnace e is expressed as:
e＝1/y×100％
In the formula, y is the projected life of station boiler low-temperature pressure-containing member outside furnace, and unit is year;
The 11 step: calculate the low-temperature pressure-containing member outside furnace residue calendar life-span:
The residue calendar life-span R of station boiler low-temperature pressure-containing member outside furnace
LComputing formula as follows:
R
L＝E
R/e
The 12 step: calculate low-temperature pressure-containing member outside furnace and used a year number:
Adopt prior art, calculate station boiler from going into operation to the calendar hourage PH in use of current time, station boiler has used a year number y
0Computing formula be expressed as:
y
0＝PH/8760；
The 13 step: calculate the low-temperature pressure-containing member outside furnace serviceable bife:
Station boiler low-temperature pressure-containing member outside furnace serviceable bife L
aComputing formula as follows:
L
a＝y
0+R
L；
The 14 step: calculate low-temperature pressure-containing member outside furnace residue calendar life-span safe clearance:
The safe clearance L in station boiler low-temperature pressure-containing member outside furnace residue calendar life-span
sComputing formula as follows:
L
s＝L
a-y；
In the formula, y is the projected life of station boiler low-temperature pressure-containing member outside furnace, and unit is year;
The 15 step: determine low-temperature pressure-containing member outside furnace least residue calendar life safe clearance:
After the residue calendar life-span safe clearance of n low temperature pressure-containing member is determined outside station boiler, the least residue calendar life safe clearance L of station boiler low-temperature pressure-containing member outside furnace
mComputing formula as follows:
L
m＝min{L
1，L
2，...，L
n}；
The 16 step: control low-temperature pressure-containing member outside furnace residue calendar life-span:
Least residue calendar life safe clearance L according to the station boiler low-temperature pressure-containing member outside furnace
mOnline result of calculation, the measure in control station boiler low-temperature pressure-containing member outside furnace residue calendar life-span is: if L
m≤-5 years, in startup, shutdown and the load change process of station boiler, reduce the load changing rate of station boiler and the rate of change of main steam temperature, the minimizing amplitude is all 0.4～0.6 times of former numerical value; If-5 years＜L
m≤ 0 year, in startup, shutdown and the load change process of station boiler, reduce the load changing rate of station boiler and the rate of change of main steam temperature, the minimizing amplitude is all 0.1～0.3 times of former numerical value; If 0 year＜L
m≤ 5 years, the startup of station boiler, shutdown and and the load change process in, the main steam temperature rate of change of station boiler and load changing rate are pressed the setting operation of station boiler operating standard; If 5 years＜L
m≤ 10 years, in startup, shutdown and the load change process of station boiler, increase the rate of change of station boiler load changing rate and main steam temperature, increasing degree is all 0.1～0.3 times of former numerical value; If L
m＞10 years, in startup, shutdown and the load change process of station boiler, increase the rate of change of station boiler load changing rate and main steam temperature, increasing degree is all 0.4～0.6 times of former numerical value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010102190XA CN101825274B (en) | 2010-01-28 | 2010-01-28 | Device for on-line monitoring residue calendar life of low-temperature pressure-containing member outside furnace and method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010102190XA CN101825274B (en) | 2010-01-28 | 2010-01-28 | Device for on-line monitoring residue calendar life of low-temperature pressure-containing member outside furnace and method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN101825274A CN101825274A (en) | 2010-09-08 |
| CN101825274B true CN101825274B (en) | 2011-10-05 |
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ID=42689345
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|---|---|---|---|
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| US9212569B2 (en) * | 2010-10-19 | 2015-12-15 | General Electric Company | Systems, methods, and apparatus for determining online stress and life consumption of a heat recovery steam generator |
| JP2017182536A (en) * | 2016-03-31 | 2017-10-05 | アズビル株式会社 | Maintenance management apparatus and method for high-temperature furnace installation |
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