Method and device for distributing the output of a gas-steam boiler

Abstract

The application relates to a method and device for distributing the output of a gas-steam boiler, wherein the method comprises the following steps: obtaining historical operation data of all gas-steam boilers; analyzing the characteristics of each gas-steam boiler according to the historical operation data of all gas-steam boilers to obtain a characteristic curve of each gas-steam boiler; matching the optimal operation combination of all gas-steam boilers and the best output of at least one gas-steam boiler according to the actual steam demand of a user, and controlling the operation of all gas-steam boilers according to the optimal operation combination and the best output of the at least one gas-steam boiler. The embodiment of the application can match the optimal operation combination of all gas-steam boilers and the best output of at least one gas-steam boiler according to the actual steam demand of a user, and control the operation of all gas-steam boilers, so that the optimal operation combination of boilers and the output of each boiler can be automatically optimized according to the steam demand of a user by analyzing the characteristic curves of all boilers, and the energy consumption can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of steam boilers, in particular to a method and device for distributing output of a gas-fired steam boiler. BACKGROUND

[0002] Steam is needed in industry and life, and is widely used in machinery, chemical industry, spraying, electroplating, drying, food processing, textile and garment, papermaking, coating, hotel, school, hospital, leather, hardware and other industries, and is mainly used for production, heating, humidification, disinfection and the like. With the enhancement of environmental protection awareness, a large number of customers use gas-fired steam boilers to supply steam, and many steam boiler houses have multiple gas-fired steam boilers. With the change of steam demand of customers, there are multiple different combinations of boilers and boiler outputs to meet the demand of customers, but because the characteristic curves of each boiler are not the same, under the same steam demand condition, different combinations of boilers and boiler outputs consume different amounts of gas, and if the optimal combination of boiler operation can be found, it will be beneficial to reduce the consumption of operating gas.

[0003] In the related art, the operation of the boiler is targeted at meeting the steam demand of customers, and the steam demand of customers changes with the production of customers, and the operation of the boiler is adjusted by manual adjustment or relying on a local boiler group control system. The operation personnel selects the operation combination of the boiler according to experience, and the local boiler group control system controls the start and stop and load increase and decrease of the boiler according to the change of the boiler.

[0004] However, in the related art, the adjustment cannot be based on the characteristic curve of the actual boiler, it is difficult to find the optimal operation combination of the boiler operation energy saving, it is easy to increase the consumption of gas, and it is difficult to obtain the characteristic curve of the boiler by manually analyzing a large amount of operation data, and it is difficult to meet the steam demand of customers. SUMMARY

[0005] The present application provides a method and device for distributing output of a gas-fired steam boiler, to solve the problems in the related art that the adjustment cannot be based on the characteristic curve of the actual boiler, it is difficult to find the optimal operation combination of the boiler operation energy saving, it is easy to increase the consumption of gas, and it is difficult to obtain the characteristic curve of the boiler by manually analyzing a large amount of operation data, and it is difficult to meet the steam demand of customers.

[0006] The first aspect of the present application provides a method for distributing output of a gas-steam boiler, comprising the following steps: obtaining historical operation data of all gas-steam boilers; analyzing characteristics of each gas-steam boiler according to the historical operation data of all gas-steam boilers to obtain a characteristic curve of each gas-steam boiler; and matching an optimal operation combination of all gas-steam boilers and optimal output of at least one gas-steam boiler according to actual steam demand of a user, and controlling operation of all gas-steam boilers according to the optimal operation combination and the optimal output of the at least one gas-steam boiler.

[0007] Optionally, in one embodiment of the present application, before analyzing the characteristics of each gas-steam boiler according to the historical operation data of all gas-steam boilers to obtain the characteristic curve of each gas-steam boiler, the method further comprises: judging whether the preset independent metering condition is met; if the preset independent metering condition is met, obtaining first unit consumption of each gas-steam boiler, and calculating a first boiler efficiency curve of each gas-steam boiler according to the first unit consumption of each gas-steam boiler; if the preset independent metering condition is not met, obtaining a separate opening condition of each gas-steam boiler, and when the separate opening condition meets a preset condition, obtaining second unit consumption of each gas-steam boiler, calculating a second boiler efficiency curve of each gas-steam boiler according to the second unit consumption, and when the separate opening condition does not meet the preset condition and there is single flow and total gas consumption, fitting a relationship between total gas consumption and different steam flow combinations, and calculating a third boiler efficiency curve of each gas-steam boiler according to the relationship.

[0008] Optionally, in one embodiment of the present application, the method further comprises: when the separate opening condition does not meet the preset condition and there is no single flow and total gas consumption, sending a preset prompt to the user.

[0009] Optionally, in one embodiment of the present application, the matching of the optimal operation combination of all gas-steam boilers and the optimal output of at least one gas-steam boiler according to the actual steam demand of the user comprises: based on the actual steam demand and in combination with actual boundary conditions on site, traversing all flows and outputting a load distribution table.

[0010] Optionally, in one embodiment of the present application, the historical operation data comprises at least one of total steam instantaneous flow of a boiler room, total gas instantaneous flow of the boiler room, rated evaporation capacity of the boiler, steam instantaneous flow of the boiler, gas instantaneous flow of the boiler, flue gas temperature of the boiler, oxygen content of flue gas of the boiler, operation state of the boiler and load rate of the boiler.

[0011] The second aspect embodiment of the present application provides a power distribution device of a gas-steam boiler, comprising: an acquisition module, configured to acquire historical operation data of all gas-steam boilers; an analysis module, configured to analyze characteristics of each gas-steam boiler according to the historical operation data of all the gas-steam boilers, and obtain a characteristic curve of each gas-steam boiler; and a control module, configured to match an optimal operation combination of all the gas-steam boilers and a best power of at least one gas-steam boiler according to actual steam demand of a user, and control operation of all the gas-steam boilers according to the optimal operation combination and the best power of the at least one gas-steam boiler.

[0012] Optionally, in one embodiment of the present application, further comprising: a judgment module, configured to judge whether the each gas-steam boiler meets a preset independent metering condition before analyzing the characteristics of the each gas-steam boiler according to the historical operation data of all the gas-steam boilers, and obtaining the characteristic curve of the each gas-steam boiler; a first calculation module, configured to acquire first unit consumption of the each gas-steam boiler when the preset independent metering condition is met, and calculate a first boiler efficiency curve of the each gas-steam boiler according to the first unit consumption of the each gas-steam boiler; and a second calculation module, configured to acquire a separate opening condition of the each gas-steam boiler when the preset independent metering condition is not met, acquire second unit consumption of the each gas-steam boiler when the separate opening condition meets a preset condition, calculate a second boiler efficiency curve of the each gas-steam boiler according to the second unit consumption, and fit a relationship between total gas consumption and different steam flow combinations when the separate opening condition does not meet the preset condition and there is single flow and total gas consumption, and calculate a third boiler efficiency curve of the each gas-steam boiler according to the relationship.

[0013] Optionally, in one embodiment of the present application, further comprising: a sending module, configured to send a preset prompt to the user when the separate opening condition does not meet the preset condition and there is no single flow and total gas consumption.

[0014] Optionally, in one embodiment of the present application, the control module comprises: an output unit, configured to traverse all flows and output a load distribution table based on the actual steam demand and in combination with actual boundary conditions on site.

[0015] Optionally, in one embodiment of the present application, the historical operation data comprises at least one of total steam instantaneous flow of a boiler room, total gas instantaneous flow of the boiler room, boiler rated evaporation, boiler steam instantaneous flow, boiler gas instantaneous flow, boiler flue gas temperature, boiler flue gas oxygen content, boiler operation state and boiler load rate.

[0016] The third aspect of the present application provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the output distribution method of the gas-steam boiler as described in the above embodiments.

[0017] The fourth aspect of the present application provides a computer readable storage medium, which stores a computer program executable by a processor to implement the output distribution method of the gas-steam boiler as described above.

[0018] The present application can match the optimal operation combination of all gas-steam boilers and the optimal output of at least one gas-steam boiler according to the actual steam demand of a user, and control the operation of all gas-steam boilers, thereby automatically optimizing the optimal operation combination of boilers and the output of each boiler according to the steam demand of a user by analyzing the characteristic curves of each boiler, and reducing the consumption of energy. Thus, the problems in the related art that the adjustment cannot be based on the characteristic curves of actual boilers, it is difficult to find the optimal operation combination of boiler operation energy saving, it is easy to cause the increase of gas consumption, and a large amount of operation data needs to be analyzed to obtain the characteristic curves of boilers, it is difficult to obtain the characteristic curves of boilers by manual statistics, and it is difficult to meet the steam demand of a user, etc. are solved.

[0019] Additional aspects and advantages of the present application will be made apparent by the following description and the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0020] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description, taken in conjunction with the accompanying drawings, in which:

[0021] Figure 1 A flowchart of an output distribution method of a gas-steam boiler according to an embodiment of the present application is provided;

[0022] Figure 2 A flowchart of an output distribution method of a gas-steam boiler according to one specific embodiment of the present application is provided;

[0023] Figure 3 A structural schematic diagram of an output distribution device of a gas-steam boiler according to an embodiment of the present application is provided;

[0024] Figure 4 A structural schematic diagram of an electronic device according to an embodiment of the present application is provided. DETAILED DESCRIPTION

[0025] Embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0026] A method and device for distributing output of a gas-steam boiler are described below with reference to the drawings for embodiments of the present application. In view of the background art mentioned above, in the related art, adjustment cannot be based on the actual characteristic curve of the boiler, it is difficult to find the optimal operating combination for energy saving of the boiler operation, which easily leads to an increase in gas consumption, and obtaining the characteristic curve of the boiler requires analysis of a large amount of operation data, it is difficult to obtain the characteristic curve of the boiler by manual statistical means, and it is difficult to meet the steam demand of the customer. The present application provides a method for distributing output of a gas-steam boiler, in which method, the optimal operating combination of all gas-steam boilers and the optimal output of at least one gas-steam boiler can be matched according to the actual steam demand of the user, and all gas-steam boilers are controlled to operate, so that the optimal operating combination of the boilers and the output of each boiler are automatically optimized according to the steam demand of the customer by analyzing the characteristic curves of the boilers, thereby reducing energy consumption. Thus, the problems in the related art, such as adjustment cannot be based on the actual characteristic curve of the boiler, it is difficult to find the optimal operating combination for energy saving of the boiler operation, which easily leads to an increase in gas consumption, and obtaining the characteristic curve of the boiler requires analysis of a large amount of operation data, it is difficult to obtain the characteristic curve of the boiler by manual statistical means, and it is difficult to meet the steam demand of the customer, are solved.

[0027] Specifically, Figure 1 A flowchart of a method for distributing output of a gas-steam boiler provided by embodiments of the present application is shown.

[0028] As Figure 1 shown, the method for distributing output of a gas-steam boiler includes the following steps:

[0029] In step S101, historical operation data of all gas-steam boilers are obtained.

[0030] It can be understood that the historical operation data of all gas-steam boilers can be obtained by embodiments of the present application, such as by database query to obtain historical operation data; for example, embodiments of the present application can use locally collected and stored data, and the data in embodiments of the present application is instantaneous data.

[0031] In actual execution, the embodiment of the application can first acquire historical operation data of the boiler room, such as acquiring through database query, or for example, using locally collected and stored data. The embodiment of the application can collect instantaneous data, and ensure that the data collection time of each record should be consistent. The data can be, but is not limited to, total steam instantaneous flow of the boiler room, total gas instantaneous flow of the boiler room, rated evaporation capacity of the boiler, instantaneous steam flow of the boiler, and the like. The data in the embodiment of the application can be acquired according to actual field conditions, and whether the data quality meets the model training requirements can be judged.

[0032] The embodiment of the application can acquire historical operation data of all gas-steam boilers, provide a basis for judging whether the boilers have independent metering, and thus find the optimal operation combination of the boilers and the output of each boiler, so as to reduce energy consumption.

[0033] Optionally, in an embodiment of the application, the historical operation data includes at least one of total steam instantaneous flow of the boiler room, total gas instantaneous flow of the boiler room, rated evaporation capacity of the boiler, instantaneous steam flow of the boiler, instantaneous gas flow of the boiler, exhaust gas temperature of the boiler, oxygen content of flue gas of the boiler, operation state of the boiler, and load rate of the boiler.

[0034] In actual execution, the embodiment of the application can acquire the total steam instantaneous flow of the boiler room, the total gas instantaneous flow of the boiler room, the rated evaporation capacity of the boiler, the instantaneous steam flow of the boiler, the instantaneous gas flow of the boiler, the exhaust gas temperature of the boiler, the oxygen content of flue gas of the boiler, the operation state of the boiler, and the load rate of the boiler, and ensure that the data is acquired according to actual field conditions and meets the model training requirements.

[0035] In step S102, the characteristics of each gas-steam boiler are analyzed according to the historical operation data of all gas-steam boilers, and the characteristic curve of each gas-steam boiler is obtained.

[0036] In actual execution, the embodiment of the application can analyze the characteristics of each gas-steam boiler according to the historical operation data of all gas-steam boilers, and obtain the characteristic curve of each gas-steam boiler. In order to improve the applicability of the output distribution of the gas-steam boiler, different solutions can be provided according to different project metering conditions. In different boiler metering conditions, all the solutions need to be preprocessed and screened, and the acquired data needs to be processed and handled to eliminate abnormal data.

[0037] In some embodiments, it can be firstly judged whether there is independent metering of each boiler. For the case of independent metering, data preprocessing and screening can be performed, the average value is taken every 10 minutes or 30 minutes, the load change rate is calculated, and the data that do not meet the requirements, obvious errors, null data, or calculation of a single boiler opening do not meet the criteria are removed, so as to screen the data meeting the requirements. The embodiments of the application can calculate and separately fit the unit consumption of each boiler, calculate the boiler steam unit consumption according to the processed data, and the boiler steam unit consumption calculation formula is as follows:

[0038]

[0039] Wherein, q 燃气 is the instantaneous gas consumption, m 3 ; q 蒸汽 is the instantaneous steam production, T;

[0040] The characteristic curve of the steam unit consumption of each boiler with the boiler outlet steam flow or the boiler load rate is fitted respectively.

[0041] The embodiments of the application can calculate the boiler efficiency curve to assist in judging the rationality of the output result. Through two kinds of efficiency calculation methods, positive balance efficiency calculation and reverse balance efficiency calculation, wherein the positive balance efficiency calculation calculates the boiler efficiency according to the boiler steam flow and the boiler gas flow, and the reverse balance efficiency calculation needs to calculate the exhaust gas loss, the pollution loss, the heat loss, etc. according to the boiler gas flow, the steam flow (or opening), the exhaust gas temperature, the oxygen content of the flue gas, the pollution rate, etc. so as to calculate the boiler efficiency.

[0042] For the case of no independent metering of the boiler, the embodiments of the application can perform data preprocessing and screening, and then count the case of separate opening of each boiler. The running state point or the boiler load rate point of the boiler is used to judge the opening of the boiler. When the running state of the boiler is running or the boiler load rate is greater than 10%, the boiler is opened. The data is screened, and the data of the separate operation of each boiler is screened. The judgment condition of the separate operation is that only one boiler is running and the other boilers are not running. At this time, the data measured by the total gas flow meter and the steam flow meter of the boiler house can be considered as the gas flow and steam flow data of the running boiler.

[0043] Further, the embodiment of the present application can judge whether there is separate opening and sufficient data after counting the separate opening of each boiler. For the case of no independent metering of the project, there are two cases: one is that there is separate opening of each boiler and sufficient data, and the other is that there is no separate opening of each boiler or the data is insufficient. When there is separate opening of each boiler and sufficient data, the unit consumption of each boiler can be calculated and fitted separately. When there is no separate opening or the data is insufficient, it can be judged whether there is single flow and total gas consumption.

[0044] The embodiment of the present application can calculate and separately fit the unit consumption of each boiler when there is separate opening of each boiler and sufficient data in the case of no independent metering of the project. The boiler steam unit consumption is calculated according to the processed data, and the boiler steam unit consumption calculation formula is as follows:

[0045]

[0046] Wherein, q 燃气 is the instantaneous gas consumption, m 3 ; q 蒸汽 is the instantaneous steam production, T;

[0047] The characteristic curve of the steam unit consumption of each boiler with the boiler outlet steam flow or the boiler load rate is fitted respectively.

[0048] The embodiment of the present application can calculate the boiler efficiency curve. Through two kinds of efficiency calculation methods, the positive balance efficiency calculation and the reverse balance efficiency calculation, the boiler efficiency is calculated according to the boiler steam flow and the boiler gas flow in the positive balance efficiency calculation. In the reverse balance efficiency calculation, the boiler efficiency is calculated according to the boiler gas flow, the steam flow (or opening degree), the exhaust gas temperature, the oxygen content of the flue gas, the blowdown rate and other data, and the exhaust loss, the blowdown loss, the heat loss and other losses are calculated, so as to calculate the boiler efficiency.

[0049] In the embodiments of the present application, when the project does not have independent measurement, and each boiler does not have separate opening or the separate opening data is not enough, it can be judged whether there is single flow and total gas consumption, wherein, the boiler single steam flow and total gas consumption measurement means that each boiler has independent steam flow meter, and the boiler room has total gas flow meter. When there is single flow and total gas consumption, the relationship between the total gas consumption and different steam flow combinations can be fitted, the load rate of each boiler is taken as input, and the total gas consumption is taken as output, the neural network model is established, and the characteristic curve of each boiler is read. The boiler efficiency curve is calculated through two kinds of efficiency calculation methods, i.e. positive balance efficiency calculation and reverse balance efficiency calculation. In the positive balance efficiency calculation, the boiler efficiency is calculated according to the boiler steam flow and the boiler gas flow. In the reverse balance efficiency calculation, the boiler efficiency is calculated according to the boiler gas flow, the steam flow (or opening degree), the exhaust gas temperature, the oxygen content of flue gas, the blowdown rate and other data, so as to calculate the exhaust gas loss, the blowdown loss, the heat loss and the like, thereby calculating the boiler efficiency.

[0050] In the embodiments of the present application, the characteristics of each gas-steam boiler can be analyzed according to the historical operation data of all gas-steam boilers, and the characteristic curve of each gas-steam boiler is obtained, so that the optimal operation combination of the boilers and the output of each boiler can be automatically optimized according to the steam demand of the customer by analyzing the characteristic curve of each boiler, thereby reducing the energy consumption.

[0051] Optionally, in an embodiment of the present application, before analyzing the characteristics of each gas-steam boiler according to the historical operation data of all gas-steam boilers, and obtaining the characteristic curve of each gas-steam boiler, it further includes: judging whether each gas-steam boiler meets the preset independent measurement condition; if the preset independent measurement condition is met, obtaining the first unit consumption of each gas-steam boiler, and calculating the first boiler efficiency curve of each gas-steam boiler according to the first unit consumption of each gas-steam boiler; if the preset independent measurement condition is not met, obtaining the separate opening situation of each gas-steam boiler, and obtaining the second unit consumption of each gas-steam boiler when the separate opening situation meets the preset condition, calculating the second boiler efficiency curve of each gas-steam boiler according to the second unit consumption, and fitting the relationship between the total gas consumption and different steam flow combinations when the separate opening situation does not meet the preset condition and there is single flow and total gas consumption, and calculating the third boiler efficiency curve of each gas-steam boiler according to the relationship.

[0052] It can be understood that the preset independent metering condition in the embodiment of the present application can be boiler independent metering, and the preset independent metering condition can be no boiler independent metering. The boiler output provides different solutions according to different boiler metering conditions. First, it is necessary to determine whether the boiler has independent metering. The boiler independent metering means that each boiler has independent gas flow meters and steam flow meters, and the instantaneous steam flow and instantaneous gas flow data of the boiler can be obtained. The independent metering in the embodiment of the present application means that each boiler does not have independent gas flow meters and steam flow meters, or only has one of the independent gas flow meters and steam flow meters.

[0053] In the actual execution process, before the characteristic curve of each gas-steam boiler is obtained by analyzing the characteristics of each gas-steam boiler according to the historical operation data of all gas-steam boilers, it can be determined whether each gas-steam boiler meets a certain independent metering condition. When each boiler has independent gas flow meters and steam flow meters, and the instantaneous steam flow and instantaneous gas flow data of the boiler can be obtained, it means that the certain independent metering condition is met. At this time, the first unit consumption of each gas-steam boiler can be obtained, and the first boiler efficiency curve of each gas-steam boiler is calculated according to the first unit consumption of each gas-steam boiler. When each boiler does not have independent gas flow meters and steam flow meters, or only has one of the independent gas flow meters and steam flow meters, it means that the certain independent metering condition is not met. At this time, the separate opening condition of each gas-steam boiler can be obtained, and the second unit consumption of each gas-steam boiler is obtained when the separate opening condition meets a certain condition. The second boiler efficiency curve of each gas-steam boiler is calculated according to the second unit consumption. When the separate opening condition does not meet a certain condition and there is a single flow and total gas consumption, the relationship between the total gas consumption and different steam flow combinations is fitted, and the third boiler efficiency curve of each gas-steam boiler is calculated according to the relationship.

[0054] The embodiment of the present application can assist in determining the rationality of the output result by calculating the first boiler efficiency curve of each gas-steam boiler, the second boiler efficiency curve of each gas-steam boiler, and the third boiler efficiency curve of each gas-steam boiler, improve the applicability of the gas-steam boiler output distribution, and ensure that different solutions can be provided according to different project metering conditions.

[0055] It should be noted that the preset independent metering condition can be set by a person skilled in the art according to the actual situation, which is not limited specifically herein.

[0056] In step S103, the optimal operation combination of all gas-steam boilers and the best output of at least one gas-steam boiler are matched according to the actual steam demand of the user, and all gas-steam boilers are controlled to operate according to the optimal operation combination and the best output of at least one gas-steam boiler.

[0057] It can be understood that the optimal operation combination of all gas-steam boilers and the optimal output of at least one gas-steam boiler in the embodiments of the present application can be matched according to the actual steam demand of the user.

[0058] In actual execution, the optimal operation combination of all gas-steam boilers and the optimal output of at least one gas-steam boiler can be matched according to the actual steam demand of the user in the embodiments of the present application. Single optimization under a given steam flow can be given, the global optimal solution is found in real time by using a genetic algorithm by giving and inputting the steam flow, and the actual boundary conditions on site are considered in optimization, for example, the load rate constraint of the boiler on site is 30% to 100%; for another example, the equipment maintenance state, when the equipment is in the maintenance state, it does not participate in optimization. The embodiments of the present application can traverse all flow output load distribution tables to determine the theoretical minimum and maximum steam flow interval of the boiler house, set the steam flow interval, and perform single optimization under a given steam flow for steam flow data one by one, and output the traversal of all flow output load distribution tables. The optimal operation combination of all gas-steam boilers and the optimal output of at least one gas-steam boiler are matched according to the actual steam demand of the user to control the operation of all gas-steam boilers.

[0059] The optimal operation combination of all gas-steam boilers and the optimal output of at least one gas-steam boiler can be matched according to the actual steam demand of the user in the embodiments of the present application, and all gas-steam boilers are controlled to operate, so as to meet the steam demand of the customer and reduce the operating gas consumption.

[0060] Optionally, in an embodiment of the present application, it further includes: when the single opening condition does not meet the preset condition and does not have single flow and total gas consumption, sending a preset prompt to the user.

[0061] In actual execution, the embodiments of the present application can analyze the data of each boiler opened alone, determine whether there is a single opening and sufficient data, and when the single opening condition does not meet a certain condition and does not have single flow and total gas consumption, send a certain prompt to the user. For example, when the data of each boiler opened alone is not enough, a certain prompt can be sent to the user in an acoustic manner, so as to remind the user and further meet the customer's demand.

[0062] It should be noted that the preset condition and the preset prompt can be set by a person skilled in the art according to the actual situation, which is not limited specifically herein.

[0063] Optionally, in an embodiment of the present application, the optimal operation combination of all gas-steam boilers and the optimal output of at least one gas-steam boiler are matched according to the actual steam demand of the user, including: based on the actual steam demand and in combination with the actual boundary conditions on site, all flow rates are traversed and a load distribution table is output.

[0064] In actual execution, in an embodiment of the present application, all flow rates are traversed and a load distribution table is output according to the actual steam demand and in combination with the actual boundary conditions on site, a global optimal solution is searched for in real time by using a genetic algorithm by giving and inputting steam flow rates, and the actual boundary conditions on site are considered in the optimization, for example, the load rate constraint of the boiler on site is 30% to 100%; for another example, the equipment maintenance state, when the equipment is in the maintenance state, it does not participate in the optimization, the theoretical minimum and the theoretical maximum steam flow rate interval of the boiler house can be determined by the embodiment of the present application, the steam flow rate data is given one by one under the single optimization of the steam flow rate interval, and a load distribution table is output by traversing all flow rates, so as to further reduce the consumption of energy.

[0065] Specifically, in combination with Figure 2 as shown, the working principle of the output distribution method of the gas-steam boiler in an embodiment of the present application is described in detail.

[0066] As Figure 2 shown, the embodiment of the present application can include the following steps:

[0067] Step S201: original data. The historical operation data of the boiler house operation can be acquired by the embodiment of the present application, the data can be acquired by database query, or the data stored by local collection can be acquired.

[0068] Step S202: judging whether there is independent metering of each boiler, if yes, step S203 is executed, if not, step S204 is executed. In the embodiment of the present application, different solutions are provided according to different boiler metering conditions, and whether the boiler has independent metering is judged.

[0069] Step S203: data preprocessing and screening. In the embodiment of the present application, when the boiler has independent metering, the acquired data can be processed and handled, and the abnormal data can be eliminated.

[0070] Step S204: data preprocessing and screening. In the embodiment of the present application, when the boiler has no independent metering, the acquired data can be processed and handled, and the abnormal data can be eliminated.

[0071] Step S205: calculating and separately fitting the steam unit consumption of each boiler. In the embodiment of the present application, the steam unit consumption of each boiler can be calculated and separately fitted.

[0072] Step S206: Calculate the boiler efficiency curve. The embodiments of the present application can be used to assist in determining the rationality of the output result, support two efficiency calculation methods, positive balance efficiency calculation and reverse balance efficiency calculation, wherein the positive balance efficiency calculation calculates the boiler efficiency according to the boiler steam flow and the boiler gas flow, and the reverse balance efficiency calculation needs to calculate the exhaust smoke loss, the pollution loss, the heat loss, etc. according to the boiler gas flow, the steam flow (or opening degree), the exhaust smoke temperature, the smoke oxygen content, the pollution rate, etc., so as to calculate the boiler efficiency.

[0073] Step S207: Single optimization under given steam flow. The embodiments of the present application can use the genetic algorithm to find the global optimal solution in real time by giving and inputting the steam flow, and consider the actual boundary conditions in the field when optimizing.

[0074] Step S208: Traverse all flow output load distribution tables. The embodiments of the present application can determine the theoretical minimum and maximum steam flow interval of the boiler house, perform single optimization under given steam flow by setting steam flow intervals, and output the traversal of all flow output load distribution tables.

[0075] Step S209: Statistically analyze the case of each boiler being independently opened. The embodiments of the present application need to statistically analyze the case of each boiler being independently opened for the case of no independent measurement of the boiler.

[0076] Step S210: Determine whether there is a single opening and sufficient data. If yes, execute step S211, if not, execute step S212. The embodiments of the present application analyze the data of each boiler being independently opened, and when the data quantity of each boiler being independently operated meets the analysis of the characteristic curve of each boiler, it is considered that the data quantity is sufficient, at this time, the single opening condition and the sufficient data quantity are met, and step S211 can be executed to calculate and separately fit the steam unit consumption of each boiler, otherwise, when the single opening condition is not met or the data quantity is not sufficient, step S212 can be executed to determine whether there is a single flow and total gas consumption.

[0077] Step S211: Calculate and separately fit the steam unit consumption of each boiler. The embodiments of the present application can calculate the steam unit consumption of the boiler according to the processed data.

[0078] Step S212: Determine whether there is a single flow and total gas consumption. If yes, execute step S216, if not, execute step S217. The embodiments of the present application can determine whether there is a single flow and total gas consumption, that is, whether there is an independent steam flow meter for each boiler and a total gas flow meter for the boiler house, when the single flow and total gas consumption condition is met, step S216 can be executed to fit the relationship between the gas consumption and different steam flow combinations, otherwise, when there is no single flow or no total gas consumption, step S217 is executed.

[0079] Step S213: Calculate the boiler efficiency curve. The embodiments of the present application can calculate the boiler efficiency curve to assist in determining the rationality of the output result.

[0080] Step S214: Single optimization under given steam flow. The embodiments of the present application can find the global optimal solution in real time by giving and inputting the steam flow, and considering the actual boundary conditions in the field when optimizing.

[0081] Step S215: Traverse all flow output load distribution tables. The embodiments of the present application can determine the theoretical minimum and maximum steam flow interval of the boiler house, set the steam flow interval, give the steam flow data one by one for single optimization under given steam flow, and output the traversal of all flow output load distribution tables.

[0082] Step S216: Fit the relationship between gas consumption and different steam flow combinations. The embodiments of the present application can establish a neural network model with the load rate of each boiler as input and the total gas consumption as output, and read the characteristic curve of each boiler.

[0083] Step S217: Cannot be done. The embodiments of the present application can be done when the project has independent metering, the project has no independent metering, but each boiler has a separate start condition and sufficient data, the project has no independent metering, and each boiler has no separate start condition or insufficient data.

[0084] Step S218: Calculate the boiler efficiency curve. The embodiments of the present application can calculate the boiler efficiency curve to assist in determining the rationality of the output result.

[0085] Step S219: Single optimization under given steam flow. The embodiments of the present application can find the global optimal solution in real time by giving and inputting the steam flow, and considering the actual boundary conditions in the field when optimizing.

[0086] Step S220: Traverse all flow output load distribution tables. The embodiments of the present application can determine the theoretical minimum and maximum steam flow interval of the boiler house, set the steam flow interval, give the steam flow data one by one for single optimization under given steam flow, and output the traversal of all flow output load distribution tables.

[0087] The power output allocation method for gas-fired steam boilers proposed in this application can match the optimal operating combination among all gas-fired steam boilers and the optimal output of at least one gas-fired steam boiler according to the user's actual steam demand, and control the operation of all gas-fired steam boilers. By analyzing the characteristic curves of each boiler, the optimal operating combination and output of each boiler are automatically optimized based on the customer's steam demand, thereby reducing energy consumption. This solves the problems in related technologies where adjustments cannot be based on the actual boiler characteristic curves, making it difficult to find the optimal energy-saving operating combination, which easily leads to increased gas consumption. Furthermore, obtaining boiler characteristic curves requires analyzing a large amount of operating data, which is difficult to obtain through manual statistical methods, making it difficult to meet the customer's steam demand.

[0088] Next, referring to the accompanying drawings, the output distribution device of the gas-fired steam boiler proposed according to the embodiments of this application is described.

[0089] Figure 3 This is a schematic diagram of the output distribution device of a gas-fired steam boiler according to an embodiment of this application.

[0090] like Figure 3 As shown, the output distribution device 10 of the gas-fired steam boiler includes: an acquisition module 100, an analysis module 200, and a control module 300.

[0091] Specifically, module 100 is used to acquire historical operating data of all gas-fired steam boilers.

[0092] Analysis module 200 is used to analyze the characteristics of each gas-fired steam boiler based on the historical operating data of all gas-fired steam boilers, and obtain the characteristic curve of each gas-fired steam boiler.

[0093] The control module 300 is used to match the optimal operating combination among all gas-fired steam boilers and the optimal output of at least one gas-fired steam boiler according to the user's actual steam demand, and to control the operation of all gas-fired steam boilers according to the optimal operating combination and the optimal output of at least one gas-fired steam boiler.

[0094] Optionally, in one embodiment of this application, the output distribution device 10 of the gas-fired steam boiler further includes: a judgment module, a first calculation module, and a second calculation module.

[0095] The judgment module is used to determine whether each gas-fired steam boiler meets the preset independent metering conditions before analyzing the characteristics of each gas-fired steam boiler based on the historical operating data of all gas-fired steam boilers and obtaining the characteristic curve of each gas-fired steam boiler.

[0096] The first calculation module is configured to obtain the first unit consumption of each gas-steam boiler when the preset independent metering condition is met, and calculate the first boiler efficiency curve of each gas-steam boiler according to the first unit consumption of each gas-steam boiler.

[0097] The second calculation module is configured to obtain the individual opening condition of each gas-steam boiler when the preset independent metering condition is not met, obtain the second unit consumption of each gas-steam boiler when the individual opening condition meets the preset condition, calculate the second boiler efficiency curve of each gas-steam boiler according to the second unit consumption, and fit the relationship between the total gas consumption and different steam flow combinations when the individual opening condition does not meet the preset condition and there is single flow and total gas consumption, and calculate the third boiler efficiency curve of each gas-steam boiler according to the relationship.

[0098] Optionally, in an embodiment of the present application, the output distribution device 10 of the gas-steam boiler further comprises a sending module.

[0099] The sending module is configured to send a preset prompt to the user when the individual opening condition does not meet the preset condition and there is no single flow and total gas consumption.

[0100] Optionally, in an embodiment of the present application, the control module 300 comprises an output unit.

[0101] The output unit is configured to traverse all flows and output a load distribution table based on the actual steam demand and in combination with the actual boundary conditions on site.

[0102] Optionally, in an embodiment of the present application, the historical operation data comprises at least one of the total steam instantaneous flow of the boiler house, the total gas instantaneous flow of the boiler house, the rated evaporation capacity of the boiler, the steam instantaneous flow of the boiler, the gas instantaneous flow of the boiler, the flue gas temperature of the boiler, the oxygen content of the flue gas of the boiler, the operation state of the boiler, and the load rate of the boiler.

[0103] It should be noted that the foregoing explanation and description of the output distribution method of the gas-steam boiler also apply to the output distribution device of the gas-steam boiler of the embodiment, which will not be described here again.

[0104] The output distribution device of the gas-steam boiler provided by the embodiment of the present application can match the optimal operation combination of all gas-steam boilers and the optimal output of at least one gas-steam boiler according to actual steam demand of a user, and control operation of all gas-steam boilers, so as to automatically find the optimal operation combination of the boilers and the output of each boiler according to the steam demand of the user by analyzing characteristic curves of the boilers, and reduce energy consumption. Thus, the problems in the prior art that adjustment cannot be based on the characteristic curves of actual boilers, it is difficult to find the optimal operation combination of boiler operation energy saving, the gas consumption is increased, and a large amount of operation data needs to be analyzed to obtain the characteristic curves of the boilers, and it is difficult to obtain the characteristic curves of the boilers by manual statistics, and the steam demand of the user cannot be met are solved.

[0105] Figure 4 The structure schematic diagram of the electronic device provided by the embodiment of the present application is provided. The electronic device can include:

[0106] The memory 401, the processor 402 and the computer program stored in the memory 401 and executable on the processor 402.

[0107] The processor 402 implements the output distribution method of the gas-steam boiler provided in the above embodiment when executing the program.

[0108] Further, the electronic device further includes:

[0109] The communication interface 403 is used for communication between the memory 401 and the processor 402.

[0110] The memory 401 is used for storing the computer program executable on the processor 402.

[0111] The memory 401 can include a high-speed RAM memory, and can also include a non-volatile memory, for example, at least one disk memory.

[0112] If the memory 401, the processor 402 and the communication interface 403 are independently implemented, the communication interface 403, the memory 401 and the processor 402 can be connected to each other through a bus and complete communication between each other. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For the convenience of representation, Figure 4Only one bus or only one type of bus can exist, however.

[0113] Optionally, in a specific implementation, if the memory 401, the processor 402 and the communication interface 403 are integrated on a chip, the memory 401, the processor 402 and the communication interface 403 can complete the communication with each other through an internal interface.

[0114] The processor 402 can be a central processing unit (CPU) or an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application.

[0115] The embodiment further provides a computer readable storage medium, which stores a computer program, and the computer program is executed by a processor to implement the output distribution method of the gas-steam boiler.

[0116] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or N embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0117] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "N" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0118] Any process or method described in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or N executable instructions for implementing custom logic functions or processes, and the scope of the preferred embodiments of this application includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the functions involved, as should be understood by those skilled in the art to which embodiments of this application pertain.

[0119] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Alternatively, the computer-readable medium may be paper or other suitable media on which the program can be printed, since the program can be obtained electronically by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.

[0120] It should be understood that the various parts of this application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, the N steps or methods can be implemented using software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0121] Those skilled in the art of the present technology can understand that all or part of the steps carried out by the above-mentioned embodiment method can be completed by programs instructing related hardware, and the programs can be stored in a computer readable storage medium. When the program is executed, it includes one of the steps of the method embodiment or a combination thereof.

[0122] In addition, each functional unit in each embodiment of the present application can be integrated into one processing module, or each unit can exist physically alone, or two or more units can be integrated into one module. The integrated module can be realized in the form of hardware or in the form of a software functional module. When the integrated module is realized in the form of a software functional module and sold or used as an independent product, it can also be stored in a computer readable storage medium.

[0123] The storage medium mentioned above can be a read-only memory, a magnetic disk or an optical disk, etc. Although the embodiments of the present application have been shown and described above, it should be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above-mentioned embodiments within the scope of the present application.

Claims

1. A method for distributing the output of a gas-fired steam boiler, characterized in that, Includes the following steps: Obtain historical operating data for all gas-fired steam boilers; When each gas-fired steam boiler meets the preset independent metering conditions / does not meet the preset independent metering conditions but meets the preset conditions when turned on individually, the efficiency curve of each gas-fired steam boiler is calculated based on the unit consumption of each gas-fired steam boiler. When each gas-fired steam boiler does not meet the preset independent metering conditions and the individual start-up situation does not meet the preset conditions, and there is a single flow rate and total gas consumption, the relationship between the total gas consumption and different steam flow combinations is fitted. A neural network model is established with the load rate of each boiler as input and the total gas consumption as output. The characteristic curve of each gas-fired steam boiler is read, and the efficiency curve of each gas-fired steam boiler is calculated according to the relationship. Based on the historical operating data of all the gas-fired steam boilers, the characteristics of each gas-fired steam boiler are analyzed to obtain the characteristic curve of each gas-fired steam boiler. as well as The optimal operating combination of all gas-fired steam boilers and the optimal output of at least one gas-fired steam boiler are matched according to the user's actual steam demand, and the operation of all gas-fired steam boilers is controlled according to the optimal operating combination and the optimal output of at least one gas-fired steam boiler.

2. The method according to claim 1, characterized in that, Before analyzing the characteristics of each gas-fired steam boiler based on the historical operating data of all the gas-fired steam boilers to obtain the characteristic curve of each gas-fired steam boiler, the following steps are also included: Determine whether each gas-fired steam boiler meets the preset independent metering conditions; If the preset independent metering conditions are met, the first unit consumption of each gas-fired steam boiler is obtained, and the first boiler efficiency curve of each gas-fired steam boiler is calculated based on the first unit consumption of each gas-fired steam boiler. If the preset independent metering conditions are not met, the individual operation status of each gas-fired steam boiler is obtained. When the individual operation status meets the preset conditions, the second unit consumption of each gas-fired steam boiler is obtained. The second boiler efficiency curve of each gas-fired steam boiler is calculated based on the second unit consumption. When the individual operation status does not meet the preset conditions and there is the single flow rate and the total gas consumption, the relationship between the total gas consumption and different steam flow rate combinations is fitted, and the third boiler efficiency curve of each gas-fired steam boiler is calculated based on the relationship.

3. The method according to claim 2, characterized in that, Also includes: When the stand-alone activation does not meet the preset conditions and does not have the single-unit flow rate and the total gas consumption, a preset prompt is sent to the user.

4. The method according to claim 2, characterized in that, The process of matching the optimal operating combination among all gas-fired steam boilers and the optimal output of at least one gas-fired steam boiler based on the user's actual steam demand includes: Based on the actual steam demand and combined with the actual boundary conditions on site, all flow rates are traversed and a load distribution table is output.

5. The method according to claim 1, characterized in that, The historical operating data includes at least one of the following: total instantaneous steam flow rate of the boiler room, total instantaneous gas flow rate of the boiler room, rated evaporation capacity of the boiler, instantaneous steam flow rate of the boiler, instantaneous gas flow rate of the boiler, flue gas temperature of the boiler, oxygen content in the boiler flue gas, boiler operating status, and boiler load rate.

6. A power distribution device for a gas-fired steam boiler, characterized in that, include: The acquisition module is used to acquire historical operating data for all gas-fired steam boilers; The judgment module and calculation module are used to calculate the efficiency curve of each gas-fired steam boiler based on its unit consumption when each gas-fired steam boiler meets the preset independent metering conditions / does not meet the preset independent metering conditions but meets the preset conditions when it is turned on alone; when each gas-fired steam boiler does not meet the preset independent metering conditions and the turn-on alone condition does not meet the preset conditions, and there is a single flow rate and total gas consumption, the module fits the relationship between the total gas consumption and different steam flow combinations, establishes a neural network model with the load rate of each boiler as input and the total gas consumption as output, reads the characteristic curve of each gas-fired steam boiler, and calculates the efficiency curve of each gas-fired steam boiler based on the relationship. The analysis module is used to analyze the characteristics of each gas-fired steam boiler based on the historical operating data of all the gas-fired steam boilers, and obtain the characteristic curve of each gas-fired steam boiler. as well as The control module is used to match the optimal operating combination among all the gas-fired steam boilers and the optimal output of at least one gas-fired steam boiler according to the user's actual steam demand, and to control the operation of all the gas-fired steam boilers according to the optimal operating combination and the optimal output of at least one gas-fired steam boiler.

7. The apparatus according to claim 6, characterized in that, Also includes: The judgment module is used to determine whether each gas-fired steam boiler meets the preset independent metering conditions before analyzing the characteristics of each gas-fired steam boiler based on the historical operating data of all the gas-fired steam boilers and obtaining the characteristic curve of each gas-fired steam boiler. The first calculation module is used to obtain the first unit consumption of each gas-fired steam boiler when the preset independent metering conditions are met, and to calculate the first boiler efficiency curve of each gas-fired steam boiler based on the first unit consumption of each gas-fired steam boiler. The second calculation module is used to obtain the individual operation status of each gas-fired steam boiler when the preset independent metering conditions are not met, and to obtain the second unit consumption of each gas-fired steam boiler when the individual operation status meets the preset conditions, calculate the second boiler efficiency curve of each gas-fired steam boiler based on the second unit consumption, and to fit the relationship between the total gas consumption and different steam flow combinations when the individual operation status does not meet the preset conditions and there is the single flow rate and the total gas consumption, and calculate the third boiler efficiency curve of each gas-fired steam boiler based on the relationship.

8. The apparatus according to claim 7, characterized in that, Also includes: The sending module is used to send a preset prompt to the user when the individual activation does not meet the preset conditions and does not have the single unit flow rate and the total gas consumption.

9. An electronic device, characterized in that, include: A memory, a processor, and a computer program stored in the memory and executable on the processor, the processor executing the program to implement the power distribution method of the gas-fired steam boiler as described in any one of claims 1-5.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, The program is executed by the processor to implement the power distribution method of the gas-fired steam boiler as described in any one of claims 1-5.

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