Auxiliary energy-saving monitoring management system for gas boiler

Abstract

The invention discloses an auxiliary energy-saving monitoring and management system for a gas boiler, and relates to the field of thermal management, the system mainly comprises three modules: a waste gas monitoring and management module, a steam monitoring and management module and a condensation monitoring and management module, in the waste gas monitoring and management module, gas characteristic data of waste gas is analyzed, and the steam monitoring and management module is used for monitoring the condensation of the waste gas; the method comprises the following steps: judging whether waste gas can be combusted and circulated or not, adjusting a waste gas combustion correction factor according to the waste gas combustion correction factor, analyzing pipeline steam data in a steam monitoring management module, performing oxygen control management and water inlet control management of a boiler, simultaneously obtaining a steam use correction factor, and analyzing condensate data in a condensation monitoring management module. The steam data of the condensate water inlet in the pot is analyzed while the feed inlet is managed, so that the hole diameter of a spray head of the condensate circulating feed inlet is obtained, and efficient utilization of energy is further achieved.

Description

Technical Field

[0001] The invention relates to the field of thermal management, and in particular to a gas boiler auxiliary energy-saving monitoring and management system. Background Art

[0002] As one of the main energy-consuming equipment, energy conservation and emission reduction of gas boilers are crucial to alleviating the energy crisis and protecting the ecological environment. By improving the energy utilization efficiency of boilers, reducing energy consumption and reducing greenhouse gas emissions, the energy shortage problem can be alleviated and the negative impact on the environment can be reduced. Therefore, a gas boiler auxiliary energy-saving monitoring and management system is needed.

[0003] Prior art, such as the invention patent application with publication number CN118602384A, discloses a boiler energy-saving control method, which belongs to the field of boiler technology, including determining the target steam temperature and the required steam volume per unit time according to the use scenario of the boiler, the pressurizer determining the water storage chamber pressure according to the target steam temperature, and the energy-saving control module determining the input fuel and oxygen ratio of the first combustion unit. The present invention achieves optimal parameter matching through precise temperature and steam volume control combined with dynamic simulation, thereby reducing fuel consumption and greenhouse gas emissions, and realizing the reuse of flue gas waste heat and effective circulation of water resources through gas collection and condensate recovery. The energy-saving control module automatically adjusts the operation strategy according to real-time monitoring data, realizes immediate response and optimization adjustment to the boiler operation status, effectively recovers and treats the condensate discharged by the boiler, reduces the consumption of fresh water, and at the same time reduces water treatment costs and environmental pollution, promotes the recycling of water resources, and improves the energy saving of the boiler.

[0004] The above scheme has at least the following shortcomings: 1. The above scheme is to reuse the waste heat of flue gas by collecting gas, and use a heat exchanger to transfer the heat in the flue gas to the low-temperature medium entering the boiler to preheat the water intake. In the process of gas collection, the stability of the flue gas heat is not analyzed, and the combustible gas content in the exhaust gas is not analyzed. When the exhaust gas can be recovered and burned, it cannot be utilized, which wastes the combustible gas. On the other hand, in terms of waste heat utilization, the low-temperature medium is heated first, and then the water intake is preheated. The waste heat is utilized through two heat conductions, and is not directly utilized, resulting in a waste of waste heat.

[0005] 2. In the process of recovering and treating the condensed water discharged from the boiler, the above scheme only directly circulates the condensed water, and does not analyze the temperature of the condensed water, the flow rate of the condensed water, the temperature in the boiler, the particle size and flow rate of the steam in the boiler. It is impossible to reduce the heat required for the re-evaporation of the condensed water by adjusting the water inlet height and the water inlet nozzle. The above scheme only manages the consumption of fresh water, but does not carry out energy-saving management of the re-evaporation of condensed water, and is unable to use the properties of condensed water and the steam in the boiler for energy-saving management. Summary of the invention

[0006] In view of the above-mentioned technical deficiencies, the purpose of the present invention is to provide a gas boiler auxiliary energy-saving monitoring and management system.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions: The present invention provides a gas boiler auxiliary energy-saving monitoring and management system, including the following modules: an exhaust gas monitoring and management module, which is used to collect the gas characteristic data of the exhaust gas, analyze the gas characteristic data of the exhaust gas based on the exhaust gas utilization model, perform exhaust gas circulation management, and then obtain the exhaust gas combustion correction factor.

[0008] The steam monitoring and management module is used to collect pipeline steam data, analyze the pipeline steam data based on the exhaust gas combustion correction factor and the steam usage model, obtain the current steam usage status, perform oxygen control management and water inlet control management of the boiler, and obtain the steam usage correction factor.

[0009] The condensation monitoring and management module is used to collect condensate data, analyze the condensate data based on the steam usage correction factor and the condensation usage model, obtain the condensate circulation feed inlet, and then manage the feed inlet. At the same time, the steam data of the condensate water inlet in the pot is collected, and based on the condensation circulation model, the steam data of the condensate water inlet in the pot is analyzed to obtain the aperture of the nozzle of the condensate circulation feed inlet, and manage the nozzle aperture of the feed inlet.

[0010] Preferably, the condensate data is analyzed, and the specific analysis process is as follows: the condensate data includes the boiler's adjacent steam temperature change index, the condensate inlet steam temperature, the current condensate inlet height, the current condensate flow rate and the current condensate temperature. The boiler's adjacent steam temperature change index, the condensate inlet steam temperature, the current condensate inlet height, the current condensate flow rate and the current condensate temperature are input into the condensation usage model to obtain the output result of the boiler, and the output result has a numerical value of 0, 1 and 2.

[0011] If the output result of the boiler is 1, the condensate inlet is not changed, and the current condensate inlet is recorded as the preset inlet. If the output result of the boiler is 1, the condensate inlet is changed. When the output result of the boiler is 0, the current condensate inlet of the boiler is changed to the adjacent condensate inlet below. When the output result of the boiler is 2, the current condensate inlet of the boiler is changed to the adjacent condensate inlet above. After the preset time, the adjacent steam temperature change index, condensate inlet steam temperature, current condensate inlet height, current condensate flow rate and current condensate temperature of the subsequent boiler are continuously collected and input into the condensation usage model until the output result of the subsequent boiler is 1, and the subsequent condensate inlet is recorded as the preset inlet, so as to obtain the preset inlet.

[0012] Preferably, the steam data of the condensate water inlet in the pot is analyzed, and the specific analysis process is as follows: the steam data of the condensate water inlet in the pot includes the steam particle size evaluation index, steam flow rate evaluation index, adjacent steam particle size change index and adjacent steam flow rate change index of the preset water inlet, the steam particle size evaluation index, steam flow rate evaluation index, adjacent steam particle size change index and adjacent steam flow rate change index of the preset water inlet are input into the condensation cycle model to obtain the output result of the preset water inlet, the numerical value r of the output result is the aperture number of the nozzle of the condensate water inlet, r=1, 2.....n, n>2, n is the maximum aperture number of the nozzle.

[0013] The beneficial effects of the present invention are as follows: 1. In the exhaust gas monitoring and management module, the present invention analyzes the gas characteristic data of the exhaust gas to determine whether the exhaust gas can be burned and circulated, and adjusts the exhaust gas combustion correction factor accordingly. In the steam monitoring and management module, the pipeline steam data is analyzed to perform oxygen control management and water inlet control management of the boiler, and the steam usage correction factor is obtained at the same time. In the condensation monitoring and management module, the condensate data is analyzed to obtain the condensate circulation feed port, and then the feed port management is performed. At the same time, the steam data of the condensate water inlet in the boiler is analyzed to obtain the aperture of the nozzle of the condensate circulation feed port, thereby further realizing efficient energy utilization.

[0014] 2. The present invention firstly judges the waste gas. When the waste gas can be re-burned, the waste gas is introduced into the gas module for combustion, thereby improving the use efficiency of the gas and reducing the waste of combustible gas. When the waste gas temperature is high and stable, the waste gas is introduced into the condensate insulation module, and the cooling rate of the condensate is reduced by the waste heat of the waste gas, thereby increasing the heat of the condensate and reducing the heat required for the subsequent re-evaporation of the condensate.

[0015] 3. In the condensate collection stage, the present invention first monitors and manages the coolant water inlet, wherein not only the temperature and flow rate of the condensate are analyzed, but also the height and temperature of the water inlet in the boiler are analyzed, so that the coolant can be evaporated into gas in time during the falling process, thereby reducing the heat consumption of the coolant during re-evaporation, accelerating the re-evaporation time of the coolant, increasing the utilization rate of the heat at the high point of the boiler, and reducing the heat consumption of the boiler as a whole. Secondly, the nozzle aperture of the coolant water inlet is managed to control the droplet radius of the coolant when the water is inlet, so that the droplet radius of the coolant when the water is inlet is consistent with the boiler environment at the current height, reducing the falling time of the coolant, and allowing the coolant to re-evaporate during the falling process, effectively utilizing the heat of the steam in the boiler, reducing the re-evaporation time of the coolant, and further reducing the gas consumption of the re-evaporation of the coolant. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the connection of the system modules of the present invention. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] according to Figure 1 As shown, the present invention provides a gas boiler auxiliary energy-saving monitoring and management system, including the following modules: an exhaust gas monitoring and management module, a steam monitoring and management module, a condensation monitoring and management module and a database.

[0020] The steam monitoring management module is connected to the exhaust gas monitoring management module and the condensation monitoring management module respectively, and the database is connected to the exhaust gas monitoring management module and the steam monitoring management module respectively.

[0021] The exhaust gas monitoring and management module is used to collect the gas characteristic data of the exhaust gas, analyze the gas characteristic data of the exhaust gas based on the exhaust gas utilization model, and determine whether the exhaust gas can be burned and recycled. If the exhaust gas can be burned and recycled, the exhaust gas is burned and recycled. If the exhaust gas cannot be burned and recycled, the exhaust gas is heat-insulated and circulated to obtain the exhaust gas combustion correction factor.

[0022] In a specific embodiment, the gas characteristic data of the exhaust gas is collected, and the specific collection process is as follows: the gas characteristic data of the exhaust gas includes the combustible gas concentration, oxygen content, oxygen content change index, temperature and temperature change index of the exhaust gas. The combustible gas concentration of the exhaust gas is collected by infrared absorption method, the oxygen content of the exhaust gas is collected by electrochemical sensor method, and the temperature of the exhaust gas is collected by temperature sensor.

[0023] The oxygen content and temperature of the exhaust gas are collected at a preset period within a preset time to obtain the maximum oxygen content and minimum oxygen content of the exhaust gas within the preset time. At the same time, the oxygen content of the exhaust gas collected each time within the preset time is counted to obtain the number of occurrences of each type of oxygen content within the preset time. The difference between the maximum oxygen content of the exhaust gas within the preset time and the minimum oxygen content is subtracted from the difference by the number of occurrences of each type of oxygen content within the preset time to obtain the exhaust gas oxygen content variation index. Similarly, the temperature of the exhaust gas collected each time within the preset time is analyzed according to the analysis method of the exhaust gas oxygen content variation index to obtain the exhaust gas temperature variation index.

[0024] It should be noted that the oxygen contents collected each time are classified according to the oxygen content range, so as to obtain various types of oxygen contents.

[0025] In a specific embodiment, the gas characteristic data of the exhaust gas is analyzed, and the specific analysis process is as follows: the combustible gas concentration, oxygen content, oxygen content change index, temperature and temperature change index of the exhaust gas are input into the exhaust gas utilization model to obtain an output result, and the value of the output result includes 0 and 1;

[0026] If the output result is 0, it indicates that a combustion cycle is required, and the exhaust gas combustion correction factor corresponding to each combustible gas concentration is obtained from the database to obtain the exhaust gas combustion correction factor corresponding to the exhaust combustible gas concentration. If the output result is 1, it indicates that a heat preservation cycle is required, and the exhaust gas combustion correction factor is recorded as the benchmark exhaust gas combustion correction factor to obtain the exhaust gas combustion correction factor.

[0027] It should be noted that, through the exhaust gas combustion correction factor, in a specific embodiment of the steam utilization model, the exhaust gas utilization model expression is:

[0028]

[0029] Output results, V, T, t, Q and q are respectively the combustible gas concentration, oxygen content, oxygen content change index, temperature and temperature change index of the exhaust gas, V′, T′, t′, Q′ and q′ are respectively the preset standard combustible gas concentration, standard oxygen content, standard oxygen content change index, standard exhaust gas temperature and standard temperature change index, ε1 and ε2 are respectively the preset weight factors of the combustible gas concentration and oxygen content, ε1>0, ε2>0, ε1+ε2=1, and M is the preset standard exhaust gas combustion index.

[0030] It should be noted that the standard parameter V′ is the threshold value of the combustible gas concentration of normal exhaust gas. When V′ is greater than V, it indicates that the combustible gas concentration of the exhaust gas does not reach the concentration of normal combustion. The specific value is set by the staff, for example, V′ is 1.8. The weight factors ε1 and ε2 are related to the concentration ratio of the introduced combustible gas to oxygen. The greater the concentration ratio of the combustible gas to oxygen, the larger ε1 is, and the smaller the concentration ratio of the combustible gas to oxygen, the larger ε2 is. The specific value is set by the staff, for example, ε1 is 0.3 and ε2 is 0.7. The setting process of the standard parameters M, T′, t′, Q′ and q′ is the same as the setting process of the standard parameters, for example, M is 0.6, T′ is 16, t′ is 1.5, Q′ is 1.3 and q′ is 1.3. The larger V is, the greater the value of combustion is, and the larger T is, the lower the value of combustion is, and it is more suitable for heat preservation.

[0031] The steam monitoring and management module is used to collect pipeline steam data, analyze the pipeline steam data based on the exhaust gas combustion correction factor and the steam usage model, obtain the current steam usage status, perform oxygen control management and water inlet control management of the boiler, and obtain the steam usage correction factor.

[0032] In a specific embodiment, the pipeline steam data is collected, and the specific collection process is as follows: the pipeline steam data includes the steam pressure difference, steam temperature difference, steam humidity difference and steam flow rate difference of the pipeline. The pressure at the beginning and end of the pipeline is collected by a pressure sensor, and the pressure at the end is subtracted from the pressure at the beginning of the pipeline to obtain the steam pressure difference of the pipeline. The temperature at the beginning and end of the pipeline is collected by a temperature sensor, and the temperature at the end is subtracted from the temperature at the beginning of the pipeline to obtain the steam temperature difference of the pipeline. The humidity at the beginning and end of the pipeline is collected by a humidity sensor, and the humidity at the beginning is subtracted from the temperature at the end of the pipeline to obtain the steam humidity difference of the pipeline. The steam flow rate at the beginning and end of the pipeline is collected by a vortex flowmeter, and the steam flow rate at the beginning of the pipeline is subtracted from the steam flow rate at the end to obtain the steam flow rate difference of the pipeline.

[0033] It should be noted that the connection between the pipeline and the boiler is the starting point of the pipeline, and the connection between the pipeline and the condensation reflux device is the end of the pipeline.

[0034] In a specific embodiment, the pipeline steam data is analyzed, and the specific analysis process is as follows: the steam pressure difference, steam temperature difference, steam humidity difference and steam flow rate difference of the pipeline are input into the steam use model to obtain the output result of the pipeline, and the output result has a value including -2, -1, 0, 1 and 2;

[0035] The set water inlet and oxygen inlet are obtained from the database and recorded as the basic water inlet and oxygen inlet. If the output result is 0, it indicates that there is no need to perform water inlet control and oxygen inlet control. The basic water inlet and oxygen inlet are recorded as the changed water inlet and oxygen inlet of the gas boiler. If the output result is not 0, water inlet control and oxygen inlet control are performed. When the output result is -2, the preset unit water inlet is increased. When the output result is -1, the preset unit oxygen inlet is increased. When the output result is 1, the preset unit oxygen inlet is reduced. When the output result is 2, the preset unit water inlet is reduced until the output result is 0. The water inlet change and the oxygen inlet change are obtained by statistics. According to the basic water inlet and oxygen inlet, the changed water inlet and oxygen inlet of the gas boiler are obtained. The steam usage correction factor of each water inlet of each oxygen inlet of the gas boiler is obtained from the database, so as to obtain the steam usage correction factor corresponding to the changed water inlet and oxygen inlet of the gas boiler.

[0036] In a specific embodiment, the steam usage model expression is:

[0037]

[0038] , where D is the output result, P, F, E and G are respectively the steam pressure difference, steam temperature difference, steam humidity difference and steam flow rate difference, P′, F′, E′ and G′ are respectively the standard steam pressure difference, standard steam temperature difference, standard steam humidity difference and standard steam flow rate difference, φ1, φ2 and φ3 are respectively the preset weight factors of steam pressure difference, steam humidity difference and steam flow rate difference, φ1>0, φ2>0, φ3>0, φ1+φ2+φ3=1, N′1, N′2, N″1 and N″2 are respectively the preset first steam utilization efficiency evaluation index, second steam utilization efficiency evaluation index, first steam utilization rate evaluation index and second steam utilization rate evaluation index, and δ is the exhaust gas combustion correction factor.

[0039] It should be noted that the setting process of standard parameters P, F, E, G, N′1, N′2, N″1 and N″2 is the same as the setting process of standard parameters, for example, P is 1.6, F is 1.5, E is 1.3, G is 1.1, N′1 is 1.5, N′2 is 1.6, N″1 is 1.4 and N″2 is 1.8, and the setting process of weight factors φ1, φ2 and φ3 is the same as the setting process of weight factor ε1, for example, φ1 is 0.3, φ2 is 0.3 and φ3 is 0.4.

[0040] The steam pressure difference, steam temperature difference and steam humidity difference are used to judge the usage efficiency, and then the water intake is controlled to ensure that the steam pressure difference, steam temperature difference and steam humidity difference are within normal values. At the same time, the steam pressure difference, steam temperature difference and steam humidity difference are limited by the steam flow rate difference to judge the usage rate, and the oxygen intake is controlled according to the usage rate. At the same time, the overall value is corrected by the exhaust gas combustion correction factor to reduce the impact of the exhaust gas combustion cycle on the output result. The ratio of oxygen intake to combustible gas input is set by the staff. When the oxygen intake is controlled, the combustible gas input is controlled together to achieve the best combustion effect.

[0041] The condensation monitoring and management module is used to collect condensate data, analyze the condensate data based on the steam usage correction factor and the condensation usage model, obtain the condensate circulation feed inlet, and then manage the feed inlet. At the same time, the steam data of the condensate water inlet in the pot is collected, and based on the condensation circulation model, the steam data of the condensate water inlet in the pot is analyzed to obtain the aperture of the nozzle of the condensate circulation feed inlet, and manage the nozzle aperture of the feed inlet.

[0042] In a specific embodiment, the condensate data is collected, and the specific collection process is as follows: the condensate data includes the adjacent steam temperature change index of the boiler, the steam temperature of the condensate inlet, the current condensate inlet height, the current condensate flow rate and the current condensate temperature.

[0043] The steam temperature of each collecting point at the current condensate inlet is collected by each temperature sensor within the preset range of the current condensate inlet, and the steam temperature of each collecting point at the current condensate inlet is averaged to obtain the steam temperature at the condensate inlet. The steam temperature of each collecting point at the current condensate inlet is analyzed according to the analysis method of the oxygen content change index of the exhaust gas to obtain the adjacent steam temperature change index of the boiler.

[0044] The current condensate temperature is collected through the temperature sensor of the condensate pipe, the current condensate flow rate is collected through the turbine flowmeter, and the current condensate water inlet height is obtained through the database.

[0045] In a specific embodiment, the condensate data is analyzed, and the specific analysis process is as follows: the adjacent steam temperature change index of the boiler, the condensate inlet steam temperature, the current condensate inlet height, the current condensate flow rate and the current condensate temperature are input into the condensation usage model to obtain the output result of the boiler, and the output result has a numerical value of 0, 1 and 2.

[0046] If the output result of the boiler is 1, the condensate inlet is not changed, and the current condensate inlet is recorded as the preset inlet. If the output result of the boiler is 1, the condensate inlet is changed. When the output result of the boiler is 0, the current condensate inlet of the boiler is changed to the adjacent condensate inlet below. When the output result of the boiler is 2, the current condensate inlet of the boiler is changed to the adjacent condensate inlet above. After the preset time, the adjacent steam temperature change index, condensate inlet steam temperature, current condensate inlet height, current condensate flow rate and current condensate temperature of the subsequent boiler are continuously collected and input into the condensation usage model until the output result of the subsequent boiler is 1, and the subsequent condensate inlet is recorded as the preset inlet, so as to obtain the preset inlet.

[0047] In a specific embodiment, the condensation usage model expression is:

[0048] Among them, C is the output result, R, t + ,t - , H and L are respectively the adjacent steam temperature variation index of the boiler, the condensate inlet steam temperature, the current condensate temperature, the current condensate inlet height and the current condensate flow rate; R′, t″, H′ and L′ are respectively the preset standard temperature variation index, the standard condensate temperature difference, the standard inlet height and the standard condensate flow rate; η1 and η2 are respectively the preset weight factors of the inlet height and the condensate flow rate; η1>0, η2>0, η1+η2=1; W′ and W″ are the first pipeline usage evaluation index and the second pipeline usage evaluation index; λ is the steam usage correction factor.

[0049] It should be noted that the setting process of standard parameters R′, t″, H′, L′, W′ and W′ is the same as the setting process of standard parameters, for example, R′ is 1.3, t″ is 0.6, H′ is 1.6, L′ is 1.4, W′ is 1.7 and W″ is 2.1, and the setting process of weight factors η1 and η2 is the same as the setting process of weight factor ε1, for example, η1 is 0.3 and η2 is 0.4.

[0050] The condensate inlet in the pot is mainly related to the temperature difference between the condensate and the steam at the inlet, and secondly to the current condensate inlet height and the current condensate flow rate. Therefore, the temperature difference between the condensate and the steam at the inlet is used for judgment, and then the condensate inlet height and the current condensate flow rate are used for correction. The standard parameters W′ and W″ need to be corrected with the steam correction factor to reduce the influence of the steam in the pipeline on the selection of the condensate inlet.

[0051] In a specific embodiment, the steam data of the condensate water inlet in the pot is collected, and the specific collection process is as follows: the steam data of the condensate water inlet in the pot includes a steam particle size evaluation index, a steam flow rate evaluation index, an adjacent steam particle size change index and an adjacent steam flow rate change index of a preset water inlet,

[0052] The scattered light intensity at each angle is collected by a laser particle size analyzer, and a value is assigned to each angle. The scattered light intensity at each angle is weighted and calculated to obtain the value of the scattered light intensity at a preset water inlet. The steam particle size evaluation index corresponding to the value of each scattered light intensity is obtained from a database to obtain the steam particle size evaluation index corresponding to the value of the scattered light intensity at the preset water inlet. The particle image is collected by a camera, and the flow velocity field of each measured particle is obtained by particle image velocimetry technology, thereby obtaining the number of particles in each velocity gradient, and the median of each velocity gradient is assigned and calculated according to the correction parameter corresponding to the number of particles to obtain the steam flow velocity evaluation index.

[0053] The steam particle size evaluation index and steam flow rate evaluation index of each collection point in adjacent furnace areas are collected, and the steam particle size evaluation index of each collection point is analyzed according to the analysis method of the exhaust gas oxygen content change index to obtain the adjacent steam particle size change index. The steam flow rate evaluation index of each collection point is analyzed according to the analysis method of the exhaust gas oxygen content change index to obtain the adjacent steam flow rate change index.

[0054] In a specific embodiment, the steam data of the condensate water inlet in the pot is analyzed, and the specific analysis process is as follows: the steam particle size evaluation index, steam flow rate evaluation index, adjacent steam particle size change index and adjacent steam flow rate change index of the preset water inlet are input into the condensation cycle model to obtain the output result of the preset water inlet, and the value r of the output result is the aperture number of the nozzle of the condensate water inlet, r=1, 2...n, n>2, and n is the maximum aperture number of the nozzle.

[0055] In a specific embodiment, the condensation cycle model expression is:

[0056] Where γ is the output result, A, A″, J and J″ are respectively the steam particle size evaluation index, steam flow rate evaluation index, adjacent steam particle size change index and adjacent steam flow rate change index of the preset water inlet, A′, A″′, J′ and J″′ are respectively the preset standard particle size evaluation index, standard flow rate evaluation index, standard particle size change index and standard flow rate change index, and are the preset weight factors of the steam particle size evaluation index and the steam flow rate change index, respectively. θ1 and θ2 are respectively the weight factors of the preset adjacent steam temperature variation index and the adjacent steam flow velocity variation index of the boiler, θ1>0, θ2>0, θ1+θ2=1, Y r-1 , Y r , Y1 and Y n-1 They are respectively the preset r-1th aperture usage index, rth aperture usage index, 1st aperture usage index and n-1th aperture usage index.

[0057] It should be noted that the standard parameters A′, A″′, J′, J″′, Y r-1 , Y r , Y1 and Y n-1 The setting process is the same as the standard parameter setting process, for example, A' is 0.8, A"' is 0.75, J' is 0.6, J"' is 0.45, Y r-1 =1.6, Y r is 1.7, Y1 is 0.4 and Y n-1 is 2.3, the weight factor The process of setting θ1 and θ2 is the same as that of setting the weight factor ε1, for example 0.45 is 0.55, θ1 is 0.37 and θ2 is 0.63.

[0058] The use of the aperture is judged by the steam particle size evaluation index and the steam flow rate evaluation index, and the current steam particle size and steam flow rate are made similar to the steam particle size and steam flow rate output by the corresponding aperture, so that the condensate entering the boiler can evaporate quickly. At the same time, the stability of the basic formula is corrected by the standard particle size change index and the standard flow rate change index.

[0059] The database is used to store the exhaust gas combustion correction factor corresponding to each combustible gas concentration, the steam use correction factor of each oxygen intake amount and each water intake amount of the gas boiler, the steam particle size evaluation index corresponding to each condensate inlet height and each scattered light intensity value.

[0060] The above contents are merely examples and explanations of the concept of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the concept of the invention or exceed the scope defined in this specification, they shall all fall within the protection scope of the present invention.

Claims

1. A gas boiler auxiliary energy-saving monitoring and management system, characterized in that: Includes the following modules: The exhaust gas monitoring and management module is used to collect the gas characteristic data of the exhaust gas, analyze the gas characteristic data of the exhaust gas based on the exhaust gas utilization model, perform exhaust gas circulation management, and then obtain the exhaust gas combustion correction factor; The steam monitoring and management module is used to collect pipeline steam data, analyze the pipeline steam data based on the exhaust gas combustion correction factor and the steam usage model, obtain the current steam usage status, perform boiler oxygen control management and water inlet control management, and obtain the steam usage correction factor; The condensation monitoring and management module is used to collect condensate data, analyze the condensate data based on the steam usage correction factor and the condensation usage model, obtain the condensate circulation feed inlet, and then manage the feed inlet. At the same time, the steam data of the condensate water inlet in the pot is collected, and based on the condensation circulation model, the steam data of the condensate water inlet in the pot is analyzed to obtain the aperture of the nozzle of the condensate circulation feed inlet, and manage the nozzle aperture of the feed inlet.

2. A gas boiler auxiliary energy-saving monitoring and management system according to claim 1, characterized in that: The gas characteristic data of the exhaust gas is analyzed, and the specific analysis process is as follows: The gas characteristic data of the exhaust gas include the combustible gas concentration, oxygen content, oxygen content variation index, temperature and temperature variation index of the exhaust gas. The combustible gas concentration, oxygen content, oxygen content variation index, temperature and temperature variation index of the exhaust gas are input into the exhaust gas utilization model to obtain an output result, and the value of the output result includes 0 and 1; The exhaust gas circulation includes the exhaust gas combustion cycle and the exhaust gas insulation cycle. The exhaust gas circulation management: if the output result is 0, it indicates that a combustion cycle is required, and the exhaust gas combustion correction factor corresponding to each combustible gas concentration is obtained from the database to obtain the exhaust gas combustion correction factor corresponding to the exhaust combustible gas concentration. If the output result is 1, it indicates that a insulation cycle is required, and the exhaust gas combustion correction factor is recorded as the benchmark exhaust gas combustion correction factor to obtain the exhaust gas combustion correction factor.

3. A gas boiler auxiliary energy-saving monitoring and management system according to claim 2, characterized in that: The exhaust gas utilization model expression is: Among them, α is the output result, V, T, t, Q and q are the combustible gas concentration, oxygen content, oxygen content change index, temperature and temperature change index of the exhaust gas respectively, V′, T′, t′, Q′ and q′ are the preset standard combustible gas concentration, standard oxygen content, standard oxygen content change index, standard exhaust gas temperature and standard temperature change index respectively, ε1 and ε2 are the preset weight factors of the combustible gas concentration and oxygen content respectively, ε1>0, ε2>0, ε1+ε2=1, and M is the preset standard exhaust gas combustion index.

4. A gas boiler auxiliary energy-saving monitoring and management system according to claim 2, characterized in that: The pipeline steam data is analyzed, and the specific analysis process is as follows: The pipeline steam data includes the steam pressure difference, steam temperature difference, steam humidity difference and steam flow rate difference of the pipeline. The steam pressure difference, steam temperature difference, steam humidity difference and steam flow rate difference of the pipeline are input into the steam use model to obtain the output result of the pipeline. The output result values ​​include -2, -1, 0, 1 and 2; The set water inlet and oxygen inlet are obtained from the database and recorded as the basic water inlet and oxygen inlet. If the output result is 0, it indicates that there is no need to perform water inlet control and oxygen inlet control. The basic water inlet and oxygen inlet are recorded as the changed water inlet and oxygen inlet of the gas boiler. If the output result is not 0, water inlet control and oxygen inlet control are performed. When the output result is -2, the preset unit water inlet is increased. When the output result is -1, the preset unit oxygen inlet is increased. When the output result is 1, the preset unit oxygen inlet is reduced. When the output result is 2, the preset unit water inlet is reduced until the output result is 0. The water inlet change and the oxygen inlet change are obtained by statistics. According to the basic water inlet and oxygen inlet, the changed water inlet and oxygen inlet of the gas boiler are obtained. The steam usage correction factor of each water inlet of each oxygen inlet of the gas boiler is obtained from the database, so as to obtain the steam usage correction factor corresponding to the changed water inlet and oxygen inlet of the gas boiler.

5. A gas boiler auxiliary energy-saving monitoring and management system according to claim 4, characterized in that: The steam usage model expression is: Wherein, D is the output result, P, F, E and G are respectively the steam pressure difference, steam temperature difference, steam humidity difference and steam flow rate difference, P′, F′, E′ and G′ are respectively the standard steam pressure difference, standard steam temperature difference, standard steam humidity difference and standard steam flow rate difference, φ1, φ2 and φ3 are respectively the preset weight factors of steam pressure difference, steam humidity difference and steam flow rate difference, φ1>0, φ2>0, φ3>0, φ1+φ2+φ3=1, N′1, N′2, N″1 and N″2 are respectively the preset first steam utilization efficiency evaluation index, second steam utilization efficiency evaluation index, first steam utilization rate evaluation index and second steam utilization rate evaluation index, and δ is the exhaust gas combustion correction factor.

6. A gas boiler auxiliary energy-saving monitoring and management system according to claim 4, characterized in that: The condensate data is analyzed, and the specific analysis process is as follows: The condensate data includes the boiler's adjacent steam temperature variation index, the condensate inlet steam temperature, the current condensate inlet height, the current condensate flow rate and the current condensate temperature. The boiler's adjacent steam temperature variation index, the condensate inlet steam temperature, the current condensate inlet height, the current condensate flow rate and the current condensate temperature are input into the condensation usage model to obtain the boiler's output result, and the output result has a value of 0, 1 and 2; If the output result of the boiler is 1, the condensate inlet is not changed, and the current condensate inlet is recorded as the preset inlet. If the output result of the boiler is 1, the condensate inlet is changed. When the output result of the boiler is 0, the current condensate inlet of the boiler is changed to the adjacent condensate inlet below. When the output result of the boiler is 2, the current condensate inlet of the boiler is changed to the adjacent condensate inlet above. After the preset time, the adjacent steam temperature change index, condensate inlet steam temperature, current condensate inlet height, current condensate flow rate and current condensate temperature of the subsequent boiler are continuously collected and input into the condensation usage model until the output result of the subsequent boiler is 1, and the subsequent condensate inlet is recorded as the preset inlet, so as to obtain the preset inlet.

7. A gas boiler auxiliary energy-saving monitoring and management system according to claim 6, characterized in that: The condensation usage model expression is: Among them, C is the output result, R, t + ,t - , H and L are respectively the adjacent steam temperature variation index of the boiler, the condensate inlet steam temperature, the current condensate temperature, the current condensate inlet height and the current condensate flow rate; R′, t″, H′ and L′ are respectively the preset standard temperature variation index, the standard condensate temperature difference, the standard inlet height and the standard condensate flow rate; η1 and η2 are respectively the preset weight factors of the inlet height and the condensate flow rate; η1>0, η2>0, η1+η2=1; W′ and W′ are the first pipeline usage evaluation index and the second pipeline usage evaluation index; λ is the steam usage correction factor.

8. A gas boiler auxiliary energy-saving monitoring and management system according to claim 6, characterized in that: The steam data of the condensate inlet in the pot is analyzed, and the specific analysis process is as follows: The steam data at the condensate water inlet in the pot include the steam particle size evaluation index, steam flow rate evaluation index, adjacent steam particle size change index and adjacent steam flow rate change index of the preset water inlet. The steam particle size evaluation index, steam flow rate evaluation index, adjacent steam particle size change index and adjacent steam flow rate change index of the preset water inlet are input into the condensation cycle model to obtain the output result of the preset water inlet. The value r of the output result is the aperture number of the nozzle of the condensate water inlet, r=1, 2...n, n>2, and n is the maximum aperture number of the nozzle.

9. A gas boiler auxiliary energy-saving monitoring and management system according to claim 8, characterized in that: The condensation cycle model expression is: Where γ is the output result, A, A″, J and J″ are respectively the steam particle size evaluation index, steam flow rate evaluation index, adjacent steam particle size change index and adjacent steam flow rate change index of the preset water inlet, A′, A″′, J′ and J″′ are respectively the preset standard particle size evaluation index, standard flow rate evaluation index, standard particle size change index and standard flow rate change index, and are the preset weight factors of the steam particle size evaluation index and the steam flow rate change index, respectively. θ1 and θ2 are respectively the weight factors of the preset adjacent steam temperature variation index and the adjacent steam flow velocity variation index of the boiler, θ1>0, θ2>0, θ1+θ2=1, Y r-1 , Y r , Y1 and Y n-1 They are respectively the preset r-1th aperture usage index, rth aperture usage index, 1st aperture usage index and n-1th aperture usage index.

10. A gas boiler auxiliary energy-saving monitoring and management system according to claim 1, characterized in that: The database is used to store the exhaust gas combustion correction factors corresponding to each combustible gas concentration and the steam use correction factors for each oxygen intake amount and each water intake amount of the gas boiler.

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