CN102944441A - Method for outputting effective output efficiency of boiler - Google Patents
Method for outputting effective output efficiency of boiler Download PDFInfo
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- CN102944441A CN102944441A CN2012105197619A CN201210519761A CN102944441A CN 102944441 A CN102944441 A CN 102944441A CN 2012105197619 A CN2012105197619 A CN 2012105197619A CN 201210519761 A CN201210519761 A CN 201210519761A CN 102944441 A CN102944441 A CN 102944441A
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Abstract
The invention discloses a method for outputting effective output efficiency of a boiler. The method comprises the following steps of: determining real-time air dry base ash content of equivalent fuel in the boiler through air dry base ash content of the equivalent fuel and fire coal consumption of the equivalent fuel, further establishing a function relationship between the received base lower heating value and the air dry base ash content, and further calculating the real-time efficiency of the boiler. The method for acquiring the effective output efficiency of the boiler is provided, online measurement of elemental analysis of charged coal and online measurement of ash combustible content are avoided, and according to the method, the operation is easy and the accuracy is high; and therefore, the method for calculating the efficiency of the boiler is simplified.
Description
Technical field
The present invention relates to the automatic monitoring technical field, relate in particular to a kind of output intent of effective output efficiency of boiler.
Background technology
The safe and economical operation of fuel-burning power plant is the target that electric power enterprise is pursued always, along with national energy-saving reduces discharging continuing deeply of policy, and the driving of fuel-burning power plant self operated pressure double factor, it is to realize one of important channel of energy-saving and emission-reduction that high efficiency boiler optimization operation is pursued by thermal power generation corporations.
The real-time online meter output that realizes the boiler work efficiency is basis and the prerequisite of carrying out the energy consumption monitoring of thermal power generation unit.According to " station boiler performance test code " (GB 10184-88) or ASME steam boiler performance test standard (PTC 4-1998/2008), adopt input-output calorimetry (positive balance method) no matter be, or heat loss method's (counter balancing method) must at first obtain the data of technical analysis and the ultimate analysis of the real-time ature of coal of boiler in the line computation boiler efficiency.
Yet large-size thermal power plant only has the ability of coal industrial analysis mostly at present, and the ultimate analysis of coal need to entrust the analytical test mechanism of specialty to carry out usually, obtains effective output efficiency of boiler for large-size thermal power plant and brings very large inconvenience.
Summary of the invention
In view of this, the invention provides a kind of output intent of effective output efficiency of boiler, can not settle a dispute by the parties concerned themselves with generating plant in the solution prior art and calculate in real time the problem of boiler work efficiency, its concrete scheme is as follows:
A kind of output intent of effective output efficiency of boiler comprises:
Obtain the parameter information of equivalent fuel, determine the equivalent fuel net calorific value corresponding with described equivalent fuel parameter information;
Determine the empty dry basis ash content content of equivalent fuel according to the first funtcional relationship and described equivalent fuel net calorific value;
Obtain the boiler main steam flow, determine the coal-fired consumption of equivalent fuel according to the funtcional relationship of the coal-fired consumption of boiler main steam flow and equivalent fuel;
Set up the funtcional relationship of the real-time empty dry basis ash content content of the coal-fired consumption of the empty dry basis ash content content of described equivalent fuel, described equivalent fuel and equivalent fuel, obtain the real-time empty dry basis ash content content of equivalent fuel according to described funtcional relationship;
Determine the as received basis net calorific value of equivalent fuel in the boiler according to the real-time empty dry basis ash content content of described the first funtcional relationship and described equivalent fuel;
Determine the real-time consumption of equivalent fuel in the boiler, according to the real-time consumption of equivalent fuel in the as received basis net calorific value of equivalent fuel in the described boiler and the boiler, calculate the input heat of described boiler;
Adopt presetting method to determine effective quantity of heat given up of boiler;
According to input heat and effective quantity of heat given up of described boiler, determine effective output efficiency and the output of boiler.
Determine that the real-time consumption of equivalent fuel is in the boiler:
Obtain the coal-supplying amount of each feeder;
Determine the correction factor of weighing that each feeder is corresponding;
Determine the coal-supplying amount of each feeder and the product of the correction factor of weighing of correspondence;
Each product addition that obtains is obtained the real-time consumption of equivalent fuel in the boiler.
The funtcional relationship of the real-time empty dry basis ash content content of the described coal-fired consumption of setting up the empty dry basis ash content content of described equivalent fuel, described equivalent fuel and equivalent fuel comprises:
Obtain the difference of the coal-fired consumption of the real-time consumption of equivalent fuel in the described boiler and described equivalent fuel;
Determine the coal of equivalent fuel and burn the comprehensive weight influence coefficient that degree changes;
Obtain the product of the comprehensive weight influence coefficient that the difference of coal-fired consumption of the real-time consumption of equivalent fuel in the described boiler and described equivalent fuel and the coal of described equivalent fuel and the degree that burns change;
Determine the quotient of the coal-fired consumption of described product and described benchmark coal;
The empty dry basis ash content content of described quotient and described equivalent fuel is added up to the funtcional relationship of the real-time empty dry basis ash content content of the coal-fired consumption of the empty dry basis ash content content of described equivalent fuel, described equivalent fuel and equivalent fuel.
The first funtcional relationship of the empty dry basis ash content content of described equivalent fuel net calorific value and equivalent fuel comprises:
Determine the value of constant a, b, c according to described equivalent fuel;
The product of determining the empty dry basis ash content content square of constant a and described equivalent fuel is the first product value;
The product that obtains the empty dry basis ash content content of constant b and described equivalent fuel is the second product value;
Difference and constant c addition with described the first product value and the second product value.
Determine that the coal-fired consumption of described equivalent fuel and the funtcional relationship of boiler main steam flow comprise:
Determine the value of constant d, e according to described equivalent fuel;
Determine the product of the main steam flow of constant d and described boiler;
Product and constant e addition with the main steam flow of described constant d and described boiler.
The process of determining the as received basis net calorific value of equivalent fuel in the described boiler comprises:
Determine the value of constant a, b, c according to described equivalent fuel;
The product of determining the real-time empty dry basis ash content content square of equivalent fuel in constant a and the described boiler is the 3rd product value;
The product that obtains the real-time empty dry basis ash content content of equivalent fuel in constant b and the described boiler is the 4th product value;
Obtain the difference of described the 3rd product value and the 4th product value and constant c and, obtain the as received basis net calorific value of equivalent fuel in the described boiler.
The process of determining the real-time input heat of described boiler comprises:
Determine the real-time consumption of equivalent fuel in the described boiler and the product of coefficient 1000;
Obtain the product of the as received basis net calorific value of equivalent fuel in described product and the described boiler, obtain the real-time input heat of described boiler.
The presetting method of determining effective quantity of heat given up of boiler is:
The difference of determining the enthalpy of the enthalpy of main steam of described boiler and the feedwater of described boiler main is the first difference;
The difference of determining described boiler reheater outlet steam enthalpy and described boiler reheater inlet steam enthalpy is the second difference;
The difference of determining the reheater desuperheating water enthalpy of described boiler reheater outlet steam enthalpy and described boiler is the 3rd difference;
Obtain the product of the main steam flow of described the first difference and described boiler;
Obtain the product of described the second difference and described boiler reheater inlet steam flow;
Obtain the product of the reheater desuperheating water flow of described the 3rd difference and described boiler;
Above-mentioned three product done and, do long-pending presetting method for effective quantity of heat given up of determining boiler with coefficient 1000.
Effective output efficiency of determining described boiler is:
Effective quantity of heat given up of described boiler and the real-time input heat of described boiler are the merchant, obtain effective output efficiency and the output of described boiler.
Can find out from technique scheme, the disclosed method of obtaining the effective work efficiency of boiler of the embodiment of the invention, empty dry basis ash content content by equivalent fuel and the coal-fired consumption of equivalent fuel are determined the real-time empty dry basis ash content content of equivalent fuel in the boiler, and then set up funtcional relationship between as received basis net calorific value and its sky dry basis ash content content, thereby calculate the Real time Efficiency of boiler.A kind of method of obtaining the effective output efficiency of boiler is provided, has avoided the on-line measurement of the ultimate analysis that enters the stove ature of coal and the on-line measurement of ash combustibles content, simple to operate, degree of accuracy is high, and the method for calculating boiler efficiency is simplified.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the process flow diagram of output intent of effective output efficiency of the disclosed boiler of the embodiment of the invention;
Fig. 2 is the process flow diagram of the funtcional relationship of the disclosed real-time empty dry basis ash content content that obtains equivalent fuel of the embodiment of the invention;
Fig. 3 is the process flow diagram of the first funtcional relationship of the disclosed empty dry basis ash content content that obtains described equivalent fuel net calorific value and equivalent fuel of the embodiment of the invention;
Fig. 4 is the process flow diagram of the funtcional relationship of the disclosed coal-fired consumption that obtains equivalent fuel of the embodiment of the invention and boiler main steam flow;
Fig. 5 is the process flow diagram of effective output efficiency of the disclosed definite boiler of the embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
The process flow diagram of the output intent of effective output efficiency of boiler disclosed by the invention comprises as shown in Figure 1:
Step S11, obtain the parameter information of equivalent fuel, determine the equivalent fuel net calorific value corresponding with described equivalent fuel parameter information.
Determine equivalent fuel, obtain the parameter information of equivalent fuel according to the equivalent fuel of determining, comprising: the net calorific value of equivalent fuel, the as received basis net calorific value of equivalent fuel, coal and burn the comprehensive weight influence coefficient that degree changes.
In addition, not identical by the obtainable parameter information of each boiler yet, can comprise: the main steam flow of boiler, the boiler main steam enthalpy, the enthalpy of boiler main feedwater, boiler reheater inlet steam flow, boiler reheater outlet steam enthalpy, boiler reheater inlet steam enthalpy, boiler reheater desuperheating water flow, boiler reheater desuperheating water enthalpy.
By being the difference of the feeder of boiler transfer the fuel, can obtain the coal-supplying amount of each feeder and the correction factor of weighing.
Step S12, determine the empty dry basis ash content content of equivalent fuel according to the first funtcional relationship and described equivalent fuel net calorific value;
Wherein, the empty dry basis ash content content of described equivalent fuel and the first funtcional relationship of described equivalent fuel net calorific value can be expressed as:
Q
net.ar_design=f
1(A
ad_design)
Wherein, Q
Net.ar_designBe the net calorific value of equivalent fuel, A
Ad_designEmpty dry basis ash content content for equivalent fuel.
Step S13, obtain the boiler main steam flow, determine the coal-fired consumption of equivalent fuel according to the funtcional relationship of the coal-fired consumption of boiler main steam flow and equivalent fuel;
Wherein, the funtcional relationship of the coal-fired consumption of described boiler main steam flow and equivalent fuel can be expressed as:
B
design=f
2(D
gq)
Wherein, B
DesignBe the coal-fired consumption of equivalent fuel, D
GqMain steam flow for boiler.
The funtcional relationship of the real-time empty dry basis ash content content of step S14, the coal-fired consumption of setting up the empty dry basis ash content content of described equivalent fuel, described equivalent fuel and equivalent fuel, the described funtcional relationship of foundation obtains the real-time empty dry basis ash content content of equivalent fuel;
Set up functional relation with the real-time empty dry basis ash content content of equivalent fuel according to the coal-fired consumption of the empty dry basis ash content content of the equivalent fuel that obtains in the above-mentioned steps, equivalent fuel, can be expressed as:
A
ad=f
3
A wherein
AdReal-time empty dry basis ash content content for equivalent fuel.
Step S15, determine the as received basis net calorific value of equivalent fuel in the boiler according to the real-time empty dry basis ash content content of described the first funtcional relationship and described equivalent fuel;
The funtcional relationship of the as received basis net calorific value of equivalent fuel can be expressed as with the first funtcional relationship in the real-time empty dry basis ash content content of described equivalent fuel and the boiler:
Q
net.ar=f
1(A
ad)
Wherein, Q
Net.arBe the as received basis net calorific value of equivalent fuel in the described boiler, A
AdReal-time empty dry basis ash content content for described equivalent fuel.
Step S16, determine the real-time consumption of equivalent fuel in the boiler, according to the real-time consumption of equivalent fuel in the as received basis net calorific value of equivalent fuel in the described boiler and the boiler, calculate the input heat of described boiler;
Step S17, employing presetting method are determined effective quantity of heat given up of boiler;
Wherein, the functional relation of determining effective quantity of heat given up of boiler can be expressed as:
Q
1=f
4
Wherein, Q
1Effective quantity of heat given up for boiler.
Input heat and effective quantity of heat given up of step S18, the described boiler of foundation are determined effective output efficiency and the output of boiler.
The disclosed method of obtaining the effective work efficiency of boiler of the embodiment of the invention, empty dry basis ash content content by equivalent fuel and the coal-fired consumption of equivalent fuel are determined the real-time empty dry basis ash content content of equivalent fuel in the boiler, and then set up funtcional relationship between as received basis net calorific value and its sky dry basis ash content content, thereby calculate the real-time working efficient of boiler.A kind of method of obtaining the effective output efficiency of boiler is provided, has avoided the on-line measurement of the ultimate analysis that enters the stove ature of coal and the on-line measurement of ash combustibles content, simple to operate, degree of accuracy is high, and the method for calculating boiler efficiency is simplified.
The process flow diagram of the funtcional relationship of the real-time empty dry basis ash content content that obtains equivalent fuel disclosed by the invention comprises as shown in Figure 2:
The difference of the coal-fired consumption of step S21, the real-time consumption that obtains equivalent fuel in the described boiler and described equivalent fuel.
Obtain the difference of the coal-fired consumption of the real-time consumption of equivalent fuel in the described boiler and described equivalent fuel, can be expressed as: B-B
Design,
Wherein, B is the real-time consumption of equivalent fuel in the described boiler, B
DesignCoal-fired consumption for described equivalent fuel.
Step S22, determine the coal of equivalent fuel and comprehensive weight influence coefficient that the degree that burns changes;
The comprehensive weight influence coefficient that the coal of described equivalent fuel and the degree that burns change is relevant with equivalent fuel, according to the difference of equivalent fuel and difference represents with k.
The product of the comprehensive weight influence coefficient that the difference of the coal-fired consumption of step S23, the real-time consumption that obtains equivalent fuel in the described boiler and described equivalent fuel and the coal of described equivalent fuel and the degree that burns change;
Said process can be expressed as: k (B-B
Design),
Wherein, k represents the coal of equivalent fuel and burns the comprehensive weight influence coefficient that degree changes that B is the real-time consumption of equivalent fuel in the described boiler, B
DesignCoal-fired consumption for described equivalent fuel.
Step S24, determine the quotient of the coal-fired consumption of described product and described benchmark coal;
The quotient of determining the coal-fired consumption of described product and described benchmark coal can be expressed as: k (B-B
Design)/B
Design
Step S25, the empty dry basis ash content content of described quotient and described equivalent fuel added up to the funtcional relationship of the real-time empty dry basis ash content content of the coal-fired consumption of the empty dry basis ash content content of described equivalent fuel, described equivalent fuel and equivalent fuel.
The funtcional relationship of obtaining the real-time empty dry basis ash content content of equivalent fuel is formulated as:
A
ad=A
ad_design+k(B-B
design)/B
design
Wherein, A
AdBe the real-time empty dry basis ash content content of equivalent fuel, A
Ad_designBe the empty dry basis ash content content of equivalent fuel, k represents the coal of equivalent fuel and burns the comprehensive weight influence coefficient that degree changes that B is the real-time consumption of equivalent fuel in the described boiler, B
DesignCoal-fired consumption for described equivalent fuel.
Further, the operational flowchart that the real-time consumption of equivalent fuel obtains in the described boiler comprises as shown in Figure 3:
Being defined as described boiler provides the number N of the feeder of equivalent fuel, and the equivalent fuel amount of each feeder for providing for described boiler is provided, and namely coal-supplying amount is determined the correction factor of weighing that each feeder is corresponding.Obtain the product of corresponding weigh correction factor and its coal-supplying amount of each feeder, with the product addition of weigh correction factor and its coal-supplying amount of N feeder, obtain the real-time consumption of equivalent fuel in the described boiler.
Present embodiment is disclosed to be obtained in the process of funtcional relationship of real-time empty dry basis ash content content of equivalent fuel, the real-time consumption of equivalent fuel in the coal of empty dry basis ash content content, equivalent fuel of equivalent fuel and comprehensive weight influence coefficient that the degree that burns changes, the boiler, the coal-fired consumption of equivalent fuel have been used, by above-mentioned 4 numerical value are passed through computing, can obtain the real-time empty dry basis ash content content of equivalent fuel, avoided the process to the ultimate analysis of equivalent fuel, the effective output efficiency that obtains boiler for power plant provides easy method.
The process flow diagram of the first funtcional relationship of the empty dry basis ash content content that obtains described equivalent fuel net calorific value and equivalent fuel disclosed by the invention comprises as shown in Figure 3:
Step S31, determine that the product of the empty dry basis ash content content square of constant a and described equivalent fuel is the first product value;
Step S32, the product that obtains the empty dry basis ash content content of constant b and described equivalent fuel are the second product value;
Step S33, with difference and the constant c addition of described the first product value and the second product value.
The formula table of said process narration is shown:
Q
net.ar_design=a*A
ad_design 2-b*A
ad_design+c
Wherein, Q
Net.ar_designBe the net calorific value of equivalent fuel, A
Ad_designBe the empty dry basis ash content content of equivalent fuel, a, b, c are constant, and be relevant with selected equivalent fuel, and different equivalent fuels has different constant a, b, c.
Further, the first functional relation of the real-time empty dry basis ash content content of equivalent fuel is in the as received basis net calorific value of the interior equivalent fuel of described boiler and the boiler:
Q
net.ar=a*A
ad 2-b*A
ad+c
Wherein, Q
Net.arBe the as received basis net calorific value of equivalent fuel in the boiler, A
AdBe the real-time empty dry basis ash content content of equivalent fuel in the boiler, constant a, b, c are relevant with selected equivalent fuel, and different equivalent fuels has different constant a, b, c.
Disclosed the first functional relation of present embodiment is by the empty dry basis ash content content of the constant corresponding with equivalent fuel and equivalent fuel or the real-time empty dry basis ash content content of equivalent fuel, determine the net calorific value of equivalent fuel or the as received basis net calorific value of the interior equivalent fuel of boiler, avoided the process to the ultimate analysis of equivalent fuel, the effective output efficiency that obtains boiler for power plant provides easy method.
The process flow diagram of the funtcional relationship of the coal-fired consumption that obtains equivalent fuel disclosed by the invention and boiler main steam flow comprises as shown in Figure 4:
Step S41, determine the product of the main steam flow of constant d and described boiler;
Step S42, with product and the constant e addition of the main steam flow of described constant d and described boiler.
The formula table of describing in the above-mentioned steps is shown:
B
design=d*D
gq+e
Wherein, B
DesignBe the coal-fired consumption of equivalent fuel, D
GqBe the main steam flow of boiler, d, e are constant, and be relevant with selected equivalent fuel, and different equivalent fuels has different constant d, e.
Present embodiment is disclosed to obtain the method for the funtcional relationship of the coal-fired consumption of equivalent fuel and boiler main steam flow, by to the main steam flow of boiler and the constant d relevant with selected equivalent fuel, the functional operation of e, directly obtain the coal-fired consumption of equivalent fuel, avoided the process to the ultimate analysis of equivalent fuel, the effective output efficiency that obtains boiler for power plant provides easy method.
The process flow diagram of effective output efficiency of definite boiler disclosed by the invention comprises as shown in Figure 5:
Step S51, obtain the real-time input heat of described boiler.
The process of obtaining the real-time input heat of described boiler is:
Determine the real-time consumption of equivalent fuel in the described boiler and the product of coefficient 1000;
Obtain the product of the as received basis net calorific value of equivalent fuel in described product and the described boiler, obtain the real-time input heat of described boiler.
Being formulated said process is:
Q
r=1000*B*Q
net.ar
Wherein, Q
rBe the real-time input heat of boiler, B is the real-time consumption of equivalent fuel in the boiler, Q
Net.arAs received basis net calorific value for equivalent fuel in the boiler.
Step S52, obtain effective quantity of heat given up of boiler.
The process of obtaining effective quantity of heat given up of boiler comprises:
The difference of determining the enthalpy of the enthalpy of main steam of described boiler and the feedwater of described boiler main is the first difference;
The difference of determining described boiler reheater outlet steam enthalpy and described boiler reheater inlet steam enthalpy is the second difference;
The difference of determining the reheater desuperheating water enthalpy of described boiler reheater outlet steam enthalpy and described boiler is the 3rd difference;
Obtain the product of the main steam flow of described the first difference and described boiler;
Obtain the product of described the second difference and described boiler reheater inlet steam flow;
Obtain the product of the reheater desuperheating water flow of described the 3rd difference and described boiler;
Above-mentioned three product done and, do long-pending presetting method for effective quantity of heat given up of determining boiler with coefficient 1000.
Said process can be formulated as:
Q
1=1000*[D
gq*(h
gq-h
gs)+D′
zq*(h″
zq-h′
zq)+D
zj*(h″
zq-h
zj)]
Wherein, Q
1Be effective quantity of heat given up of boiler, D
GqBe the main steam flow of boiler, D '
ZqBe described boiler reheater inlet steam flow, D
ZjBe the reheater desuperheating water flow of boiler, h
GqBe the enthalpy of the main steam of boiler, h
GsBe the enthalpy of boiler main feedwater, h
Gq-h
GsThe result be the first difference, h "
ZqBe boiler reheater outlet steam enthalpy, h '
ZqBe boiler reheater inlet steam enthalpy, h "
Zq-h '
ZqThe result be the second difference, h
ZjBe the reheater desuperheating water enthalpy of boiler, h "
Zq-h
ZjThe result be the first difference.
Step S53, according to the real-time input heat of described boiler and effective quantity of heat given up of boiler, determine effective output efficiency of described boiler.
Effective output efficiency of determining boiler is to be the merchant by the real-time input heat of effective quantity of heat given up of the boiler that will obtain in the said process and boiler, that is:
Wherein, η
BoilerEffective output efficiency for boiler.
In the process of effective output efficiency of the disclosed definite described boiler of present embodiment, by obtaining each calculated amount in the boiler, determine the real-time input heat of boiler and effective quantity of heat given up of boiler, and then the process of effective quantity of heat given up of definite boiler, avoided the process to the ultimate analysis of equivalent fuel, the effective output efficiency that obtains boiler for power plant provides easy method.
Each embodiment adopts the mode of going forward one by one to describe in this instructions, and what each embodiment stressed is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.For the disclosed device of embodiment, because it is corresponding with the disclosed method of embodiment, so description is fairly simple, relevant part partly illustrates referring to method and gets final product.
The professional can also further recognize, unit and the algorithm steps of each example of describing in conjunction with embodiment disclosed herein, can realize with electronic hardware, computer software or the combination of the two, for the interchangeability of hardware and software clearly is described, composition and the step of each example described in general manner according to function in the above description.These functions are carried out with hardware or software mode actually, depend on application-specific and the design constraint of technical scheme.The professional and technical personnel can specifically should be used for realizing described function with distinct methods to each, but this realization should not thought and exceeds scope of the present invention.
The method of describing in conjunction with embodiment disclosed herein or the step of algorithm can directly use the software module of hardware, processor execution, and perhaps the combination of the two is implemented.Software module can place the storage medium of any other form known in random access memory (RAM), internal memory, ROM (read-only memory) (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or the technical field.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be apparent concerning those skilled in the art, and General Principle as defined herein can in the situation that does not break away from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (9)
1. the output intent of effective output efficiency of a boiler is characterized in that, comprising:
Obtain the parameter information of equivalent fuel, determine the equivalent fuel net calorific value corresponding with described equivalent fuel parameter information;
Determine the empty dry basis ash content content of equivalent fuel according to the first funtcional relationship and described equivalent fuel net calorific value;
Obtain the boiler main steam flow, determine the coal-fired consumption of equivalent fuel according to the funtcional relationship of the coal-fired consumption of boiler main steam flow and equivalent fuel;
Set up the funtcional relationship of the real-time empty dry basis ash content content of the coal-fired consumption of the empty dry basis ash content content of described equivalent fuel, described equivalent fuel and equivalent fuel, obtain the real-time empty dry basis ash content content of equivalent fuel according to described funtcional relationship;
Determine the as received basis net calorific value of equivalent fuel in the boiler according to the real-time empty dry basis ash content content of described the first funtcional relationship and described equivalent fuel;
Determine the real-time consumption of equivalent fuel in the boiler, according to the real-time consumption of equivalent fuel in the as received basis net calorific value of equivalent fuel in the described boiler and the boiler, calculate the input heat of described boiler;
Adopt presetting method to determine effective quantity of heat given up of boiler;
According to input heat and effective quantity of heat given up of described boiler, determine effective output efficiency and the output of boiler.
2. method according to claim 1 is characterized in that, determines that the real-time consumption of equivalent fuel is in the boiler:
Obtain the coal-supplying amount of each feeder;
Determine the correction factor of weighing that each feeder is corresponding;
Determine the coal-supplying amount of each feeder and the product of the correction factor of weighing of correspondence;
Each product addition that obtains is obtained the real-time consumption of equivalent fuel in the boiler.
3. method according to claim 2 is characterized in that, the funtcional relationship of the real-time empty dry basis ash content content of the described coal-fired consumption of setting up the empty dry basis ash content content of described equivalent fuel, described equivalent fuel and equivalent fuel comprises:
Obtain the difference of the coal-fired consumption of the real-time consumption of equivalent fuel in the described boiler and described equivalent fuel;
Determine the coal of equivalent fuel and burn the comprehensive weight influence coefficient that degree changes;
Obtain the product of the comprehensive weight influence coefficient that the difference of coal-fired consumption of the real-time consumption of equivalent fuel in the described boiler and described equivalent fuel and the coal of described equivalent fuel and the degree that burns change;
Determine the quotient of the coal-fired consumption of described product and described benchmark coal;
The empty dry basis ash content content of described quotient and described equivalent fuel is added up to the funtcional relationship of the real-time empty dry basis ash content content of the coal-fired consumption of the empty dry basis ash content content of described equivalent fuel, described equivalent fuel and equivalent fuel.
4. method according to claim 1 is characterized in that, the first funtcional relationship of the empty dry basis ash content content of described equivalent fuel net calorific value and equivalent fuel comprises:
Determine the value of constant a, b, c according to described equivalent fuel;
The product of determining the empty dry basis ash content content square of constant a and described equivalent fuel is the first product value;
The product that obtains the empty dry basis ash content content of constant b and described equivalent fuel is the second product value;
Difference and constant c addition with described the first product value and the second product value.
5. method according to claim 1 is characterized in that, determines that the coal-fired consumption of described equivalent fuel and the funtcional relationship of boiler main steam flow comprise:
Determine the value of constant d, e according to described equivalent fuel;
Determine the product of the main steam flow of constant d and described boiler;
Product and constant e addition with the main steam flow of described constant d and described boiler.
6. method according to claim 1 is characterized in that, determines that the process of the as received basis net calorific value of equivalent fuel in the described boiler comprises:
Determine the value of constant a, b, c according to described equivalent fuel;
The product of determining the real-time empty dry basis ash content content square of equivalent fuel in constant a and the described boiler is the 3rd product value;
The product that obtains the real-time empty dry basis ash content content of equivalent fuel in constant b and the described boiler is the 4th product value;
Obtain the difference of described the 3rd product value and the 4th product value and constant c and, obtain the as received basis net calorific value of equivalent fuel in the described boiler.
7. method according to claim 2 is characterized in that, determines that the process of the real-time input heat of described boiler comprises:
Determine the real-time consumption of equivalent fuel in the described boiler and the product of coefficient 1000;
Obtain the product of the as received basis net calorific value of equivalent fuel in described product and the described boiler, obtain the real-time input heat of described boiler.
8. method according to claim 1 is characterized in that, determines that the presetting method of effective quantity of heat given up of boiler is:
The difference of determining the enthalpy of the enthalpy of main steam of described boiler and the feedwater of described boiler main is the first difference;
The difference of determining described boiler reheater outlet steam enthalpy and described boiler reheater inlet steam enthalpy is the second difference;
The difference of determining the reheater desuperheating water enthalpy of described boiler reheater outlet steam enthalpy and described boiler is the 3rd difference;
Obtain the product of the main steam flow of described the first difference and described boiler;
Obtain the product of described the second difference and described boiler reheater inlet steam flow;
Obtain the product of the reheater desuperheating water flow of described the 3rd difference and described boiler;
The product of the reheater desuperheating water flow of the product of product, the second difference and the boiler reheater inlet steam flow of the main steam flow of described the first difference and boiler and the 3rd difference and boiler done and, do long-pending presetting method for effective quantity of heat given up of determining boiler with coefficient 1000.
9. method according to claim 1 is characterized in that, determines that effective output efficiency of described boiler is:
Effective quantity of heat given up of described boiler and the real-time input heat of described boiler are the merchant, obtain effective output efficiency and the output of described boiler.
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