Energy-saving heat supply management system

Abstract

The invention relates to the technical field of energy-saving heat supply management, and discloses an energy-saving heat supply management system which comprises the steps that characteristic parameters, including a water supply temperature sequence, a return water temperature sequence, a condensation layer temperature sequence, gas flow and system flow, of a wall-mounted gas boiler are collected according to a fixed time interval; the water supply temperature sequence and the return water temperature sequence are subjected to first recognition processing, a convection gradient path is obtained, and the convection gradient path comprises a convection slope and a convection transverse position; performing second identification processing on the condensation layer temperature sequence to obtain the center height of the condensation layer; comparing the convection transverse position with a preset convection transverse position, and determining a transverse drift error; the center height of the condensation layer is compared with the preset center height of the condensation layer, and a vertical drift error is determined; judging whether the transverse drift error and the vertical drift error exceed limits or not; if the transverse drift error exceeds the limit, axial correction is carried out in combination with the convection slope; and if the vertical drift error exceeds the limit, adjusting the system flow to carry out vertical correction.

Description

Technical Field

[0001] The present invention relates to the technical field of energy-saving heating management, and more particularly to an energy-saving heating management system. Background Art

[0002] Gas-fired boilers, the primary heat source for residential and commercial buildings, burn natural gas to heat water in a heat exchanger, which is then transferred to the heat sink via a water supply circuit. To improve energy efficiency, modern gas-fired boilers generally utilize condensing heat exchange technology, which utilizes the latent heat of exhaust condensation to further heat the return water.

[0003] Under design operating conditions, the supply water temperature gradually decreases along the axial direction of the heat exchanger, while the return water temperature gradually increases along the axial direction. The two exhibit a mirror-image relationship in space, and the condensation layer (the condensation layer is the area within the heat exchanger where the local temperature is in the condensation zone) remains at a relatively constant height in the vertical dimension. These design conditions ensure that the sensible and latent heat generated by combustion are efficiently transferred to the water side. However, over long-term operation, gas wall-mounted boilers can experience the following issues: 1. When the load changes or the circulation flow fluctuates, the slope and constant relationship of the supply and return water temperature gradients will fluctuate. The originally stable linear relationship between the decreasing supply water and increasing return water is disrupted, causing the convection gradient path to shift axially in the heat exchanger, dislocating the condensation latent heat release area and reducing heat exchange efficiency.

[0004] 2. The height of the condensation layer inside the heat exchanger is affected by factors such as the inlet and return water temperature difference, flow rate, and exhaust gas temperature. Under different operating conditions, the center height of the condensation layer will drift upward or downward, possibly away from the heat exchanger's efficient condensation area, resulting in reduced thermal efficiency. Summary of the Invention

[0005] The present invention provides an energy-saving heat supply management system to solve the technical problems raised in the background technology.

[0006] The present invention provides an energy-saving heat supply management system, comprising: The data acquisition module is used to collect characteristic parameters of the gas wall-mounted boiler at fixed time intervals; the characteristic parameters include: supply water temperature sequence, return water temperature sequence, condensation layer temperature sequence, gas flow rate and system flow rate; a data processing module configured to perform a first identification process on the supply water temperature sequence and the return water temperature sequence to obtain a convection gradient path, the convection gradient path including a convection slope and a convection lateral position; and perform a second identification process on the condensation layer temperature sequence to obtain a center height of the condensation layer; An error measurement module is used to compare the convection lateral position with the preset convection lateral position to determine the lateral drift error; and compare the center height of the condensation layer with the preset center height of the condensation layer to determine the vertical drift error; The step-by-step processing module is used to determine whether the lateral drift error and vertical drift error exceed the limit; if the lateral drift error exceeds the limit, axial correction is performed in combination with the convection slope; if the vertical drift error exceeds the limit, the system flow is adjusted for vertical correction.

[0007] Furthermore, characteristic parameters are collected, including: X sets of supply water temperature probes and X sets of return water temperature probes are arranged at fixed intervals along the axial direction of the gas wall-mounted boiler heat exchanger to collect X supply water temperatures and X return water temperatures, forming a supply water temperature sequence and a return water temperature sequence; Z groups of temperature probes are arranged along the vertical centerline of the heat exchanger of the gas wall-mounted boiler to collect temperature sequences at Z heights and form the condensation layer temperature sequence; The gas flow and system flow are collected separately through the system flow meter of the gas wall-mounted boiler.

[0008] Furthermore, a first identification process is performed on the supply water temperature sequence and the return water temperature sequence to obtain a convection gradient path, including: Step 301: Divide the heat exchanger of the gas wall-mounted boiler into X space segments, where the xth space segment covers the xth group of supply water temperature probes and the xth group of return water temperature probes; Step 302: Construct an X×Y supply water matrix and a return water matrix within the Y time periods of the monitoring period. The element in the xth row and yth column of the supply water matrix represents the supply water temperature of the xth spatial segment at the yth time period, and the element in the xth row and yth column of the return water matrix represents the return water temperature of the xth spatial segment at the yth time period. 1≤x≤X, where x is a positive integer, and 1≤y≤Y, where y is a positive integer. Step 303: superimpose the water supply matrix and the return water matrix to form a superimposed matrix; Step 304: Calculate the difference between each element in the superposition matrix and a preset constant sum constant to form a constant sum error matrix; Step 305 , binarizing the constant sum error matrix using a preset constant sum error threshold to obtain a Boolean matrix; Step 306 , performing a connected domain analysis on the Boolean matrix, and taking each connected domain in the Boolean matrix as a candidate trajectory; Step 307: Map the mth candidate trajectory to the water supply matrix and the return water matrix, extract the water supply trajectory and return water trajectory corresponding to the mth candidate trajectory, and calculate the water supply trajectory equation and return water trajectory equation for the water supply trajectory and the return water trajectory respectively; Step 308: If there is at least one straight line between the water supply trajectory equation and the return water trajectory equation, so that the water supply trajectory equation and the return water trajectory equation are mirror images of each other, then mark the mth candidate trajectory; Step 309 , extracting the labeled candidate trajectories, determining the slope stability of each labeled candidate trajectory respectively, and generating a quality index for each labeled candidate trajectory; and taking the labeled candidate trajectory with the highest quality index as the convection gradient path; Step 310, determining the convection slope and convection lateral position of the convection gradient path; wherein the convection lateral position of the convection gradient path is determined based on the slope and intercept of the supply trajectory equation and the return trajectory equation corresponding to the convection gradient path.

[0009] Furthermore, a second identification process is performed on the condensation layer temperature sequence to obtain the center height of the condensation layer, including: Step 401, determining the temperature of the zth height time series within Y moments of the monitoring period; Step 402: sort the temperatures of the zth height time series from small to large to form a feature sorting, intercept a preset number of mode temperatures at both ends of the feature sorting to form a low temperature set and a high temperature set, and fit the low temperature set and the high temperature set to obtain a low temperature curve and a high temperature curve respectively; 1≤z≤Z, where z is a positive integer; Step 403, determining a comprehensive temperature difference index based on the low temperature curve and the high temperature curve at the z-th height; Step 404: If the comprehensive temperature difference index at the z-th height is greater than the preset temperature difference threshold, then mark the z-th height as a candidate condensation layer; Step 405: Perform a connected domain analysis on the marked heights among the Z heights, take each connected domain among the Z heights as a candidate condensation layer, and record the starting height and ending height of each candidate condensation layer, as well as the temperature range during the monitoring period; Step 406: Determine the condensation temperature range of the gas wall-mounted boiler; if the condensation temperature range of the gas wall-mounted boiler is within the temperature range of the candidate condensation layer during the monitoring period, mark the candidate condensation layer as valid; In step 407 , each valid candidate condensation layer is taken as a condensation layer, the starting height and the ending height of each condensation layer are determined, and the center height of the condensation layer is calculated based on the length weighted method.

[0010] Furthermore, the process of obtaining the lateral drift error and the vertical drift error is as follows: Step 501: Repeat steps 301 to 310 within the confidence period to obtain a reference position of the convection lateral position; repeat steps 401 to 408 to obtain a reference height of the center height of the condensation layer; In step 502, the lateral position of the convection corresponding to the monitoring time period is subtracted from the reference position of the lateral position of the convection during the confidence time period to obtain a lateral drift error; the center height of the condensation layer corresponding to the monitoring time period is subtracted from the reference height of the center height of the condensation layer to obtain a vertical drift error.

[0011] Furthermore, if the lateral drift error exceeds the limit, axial correction is performed in combination with the convection slope, including: The slope increment of the water supply trajectory equation is calculated based on the lateral drift error as follows: ; in, represents the slope increment of the water supply trajectory equation, represents the horizontal scale factor, Indicates the lateral drift error; Based on the slope increment of the water supply trajectory equation, the slope of the water supply trajectory equation is updated as follows: ; in, represents the updated slope of the water supply trajectory equation, represents the slope of the water supply trajectory equation; Based on the updated slope of the water supply trajectory equation, the water supply temperature is adjusted as follows: ; in, Indicates updated water supply temperature. Indicates the water supply temperature during the monitoring period. represents the constant, Indicates the total length of the heat exchanger divided into X space segments.

[0012] Furthermore, if the vertical drift error exceeds the limit, the system flow is adjusted for vertical correction, including: The flow gain coefficient is calculated based on the vertical drift error as follows: ; in, represents the flow gain coefficient, represents the vertical scale factor, Indicates vertical drift error; Based on the flow gain coefficient, adjust the system flow as follows: ; in, Indicates updating system traffic. Indicates the system traffic during the monitoring period.

[0013] The beneficial effects of the present invention are: by accurately identifying the convection gradient path and the center height of the condensation layer, the independent measurement and step-by-step correction of the lateral drift error and the vertical drift error can be determined, and the spatial stability of the condensation heat exchange area can be monitored in real time during the operation of the gas wall-mounted boiler, so as to make corrections to improve the heat exchange efficiency, avoid energy efficiency fluctuations and heat loss caused by the supply and return water temperature difference drift or the condensation layer offset, and thus achieve high-efficiency, low-energy consumption, automatic closed-loop energy-saving heating control under dynamic load conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a module diagram of an energy-saving heating management system of the present invention. DETAILED DESCRIPTION

[0015] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed solely to enable those skilled in the art to better understand and implement the subject matter described herein, and that the functions and arrangements of the elements discussed may be varied without departing from the scope of this specification. Various examples may omit, substitute, or add various processes or components as needed. In addition, features described with respect to some examples may also be combined in other examples.

[0016] like Figure 1 As shown, an energy-saving heating management system includes: The data acquisition module is used to collect characteristic parameters of the gas wall-mounted boiler at fixed time intervals; the characteristic parameters include: supply water temperature sequence, return water temperature sequence, condensation layer temperature sequence, gas flow rate and system flow rate; a data processing module configured to perform a first identification process on the supply water temperature sequence and the return water temperature sequence to obtain a convection gradient path, the convection gradient path including a convection slope and a convection lateral position; and perform a second identification process on the condensation layer temperature sequence to obtain a center height of the condensation layer; An error measurement module is used to compare the convection lateral position with the preset convection lateral position to determine the lateral drift error; and compare the center height of the condensation layer with the preset center height of the condensation layer to determine the vertical drift error; The step-by-step processing module is used to determine whether the lateral drift error and vertical drift error exceed the limit; if the lateral drift error exceeds the limit, axial correction is performed in combination with the convection slope; if the vertical drift error exceeds the limit, the system flow is adjusted for vertical correction.

[0017] In one embodiment of the present invention, collecting characteristic parameters includes: X sets of supply water temperature probes and X sets of return water temperature probes are arranged at fixed intervals along the axial direction of the gas wall-mounted boiler heat exchanger to collect X supply water temperatures and X return water temperatures, forming a supply water temperature sequence and a return water temperature sequence; Z groups of temperature probes are arranged along the vertical centerline of the heat exchanger of the gas wall-mounted boiler to collect temperature sequences at Z heights and form the condensation layer temperature sequence; The gas flow and system flow are collected separately through the system flow meter of the gas wall-mounted boiler.

[0018] Specifically, the collection of supply and return water temperature series is accomplished using temperature probes arranged along the axial direction of the gas-fired boiler heat exchanger. The axial direction refers to the longitudinal direction of fluid flow within the heat exchanger. X sets of supply and return water temperature probes are spaced at regular intervals along this direction. This regular spacing ensures that the probes evenly cover different axial locations of the heat exchanger, accurately capturing temperature gradients along the flow direction. X is a positive integer representing the number of probe groups, with each group corresponding to a specific axial location along the heat exchanger. The supply and return water temperature probes directly measure the hot water temperature at the corresponding location, while the return water temperature probes directly measure the cold water temperature at the corresponding location. Through continuous data collection, the measurement values ​​of each supply and return water temperature probe group form a continuous supply and return water temperature series, and the measurement values ​​of each return water temperature probe group form a continuous return water temperature series. The X supply and return water temperature series collectively reflect the temperature variation of the hot water along the axial direction of the heat exchanger, while the X return water temperature series collectively reflect the temperature variation of the cold water along the axial direction of the heat exchanger.

[0019] Specifically, the condensation layer temperature series is collected using temperature probes arranged along the vertical centerline of the gas boiler heat exchanger. Vertical refers to the height of the heat exchanger, and the vertical centerline is the central axis of the heat exchanger. Z sets of temperature probes are arranged along this centerline. Z is a positive integer representing the number of probe groups, each corresponding to a specific vertical height within the heat exchanger. The probes directly measure the temperature at that height, and through continuous acquisition, the measured values ​​of each probe group form a continuous temperature series. The temperature series at these Z heights collectively reflect the temperature distribution at different heights within the heat exchanger.

[0020] Detailed gas and system flow rates are collected using the gas wall-mounted boiler's built-in system flow meter. This meter monitors the flow of gas entering the combustion system and the flow of circulating water within the heat exchanger. This continuously collected data is used for subsequent corrective adjustments, ensuring that corrective measures accurately match actual load requirements.

[0021] In one embodiment of the present invention, a first identification process is performed on the supply water temperature sequence and the return water temperature sequence to obtain a convection gradient path, including: Step 301: Divide the heat exchanger of the gas wall-mounted boiler into X space segments, where the xth space segment covers the xth group of supply water temperature probes and the xth group of return water temperature probes; Specifically, the gas wall-mounted boiler's heat exchanger is divided axially into X spatial segments, with the number of segments matching the number of supply and return water temperature probes (X). The xth spatial segment physically covers the xth set of supply and return water temperature probes, ensuring that each spatial segment corresponds to a set of supply and return water temperature measurement locations.

[0022] Step 302: Construct an X×Y supply water matrix and a return water matrix within the Y time periods of the monitoring period. The element in the xth row and yth column of the supply water matrix represents the supply water temperature of the xth spatial segment at the yth time period, and the element in the xth row and yth column of the return water matrix represents the return water temperature of the xth spatial segment at the yth time period. 1≤x≤X, where x is a positive integer, and 1≤y≤Y, where y is a positive integer. Step 303: superimpose the water supply matrix and the return water matrix to form a superimposed matrix; Specifically, the supply and return water matrices are superimposed on each other, i.e., the values ​​of the elements in the same row and column are added together to form a superposition matrix. Each element of the superposition matrix reflects the sum of the supply and return water temperatures at the corresponding spatial segment and time.

[0023] Step 304: Calculate the difference between each element in the superposition matrix and a preset constant sum constant to form a constant sum error matrix; Specifically, the constant is preset as the theoretical value of the sum of the supply and return water temperatures under the design conditions. The difference between each element in the superposition matrix and the constant is calculated to form a constant-sum error matrix. Smaller values ​​in the error matrix indicate that the supply and return water temperature relationship at that spatial segment and time is closer to the ideal constant-sum state.

[0024] Step 305 , binarizing the constant sum error matrix using a preset constant sum error threshold to obtain a Boolean matrix; Specifically, the effective region is screened through binarization. A preset constant sum error threshold is set, which serves as the critical value for determining whether the supply and return water temperature relationship conforms to the ideal state. Based on this threshold, the constant sum error matrix is ​​binarized: when the element value is less than or equal to the threshold, it is determined to conform to the constant sum relationship and assigned a value of 1; when the element value is greater than the threshold, it is determined to deviate from the constant sum relationship and assigned a value of 0, thus obtaining a Boolean matrix.

[0025] Step 306 , performing a connected domain analysis on the Boolean matrix, and taking each connected domain in the Boolean matrix as a candidate trajectory; In detail, a connected domain analysis is performed on the Boolean matrix. A connected domain refers to a continuous region consisting of elements with a value of 1, that is, a valid region that is adjacent in space and continuous in time. Each connected domain is considered as a candidate trajectory.

[0026] Step 307: Map the mth candidate trajectory to the water supply matrix and the return water matrix, extract the water supply trajectory and return water trajectory corresponding to the mth candidate trajectory, and calculate the water supply trajectory equation and return water trajectory equation for the water supply trajectory and the return water trajectory respectively; Specifically, the mth candidate trajectory is mapped back to the supply and return matrices, and the corresponding element values ​​in the two matrices are extracted to form the supply and return trajectories corresponding to the candidate trajectory. These two trajectories are linearly fitted (via linear least squares) to obtain the supply and return trajectory equations, which are linear functions with slope and intercept parameters.

[0027] Step 308: If there is at least one straight line between the water supply trajectory equation and the return water trajectory equation, so that the water supply trajectory equation and the return water trajectory equation are mirror images of each other, then mark the mth candidate trajectory; Specifically, the supply and return trajectory equations are symmetrical about a line. Specifically, the slopes of the two equations are equal in absolute value and opposite in sign, and their intercepts satisfy a specific complementary relationship. If the two trajectory equations corresponding to the mth candidate trajectory satisfy this mirror-image relationship, the candidate trajectory is marked as a potentially valid trajectory.

[0028] Step 309 , extracting the labeled candidate trajectories, determining the slope stability of each labeled candidate trajectory respectively, and generating a quality index for each labeled candidate trajectory; and taking the labeled candidate trajectory with the highest quality index as the convection gradient path; Specifically, we evaluate the slope stability of all marked candidate trajectories. Slope stability refers to the degree of fluctuation of the slope of the trajectory equation in both time and space; smaller fluctuations indicate higher stability. We use slope stability as a quality metric for each marked trajectory, and select the trajectory with the highest quality metric as the convection gradient path.

[0029] The slope stability is obtained as follows: the difference between each element in the candidate trajectory and the constant sum is calculated to form a constant sum difference set; the variance of the constant sum difference set is calculated and the variance is used as the slope stability.

[0030] Step 310, determining the convection slope and convection lateral position of the convection gradient path; wherein the convection lateral position of the convection gradient path is determined based on the slope and intercept of the supply trajectory equation and the return trajectory equation corresponding to the convection gradient path.

[0031] Specifically, the convection slope is the slope of the convection gradient path corresponding to the supply water trajectory equation or the return water trajectory equation (the two are mirror images, with the same absolute value). It reflects the rate of change of the supply and return water temperatures along the axial direction. The convection transverse position is the intersection of the supply and return water trajectory equations.

[0032] In one embodiment of the present invention, performing a second identification process on the condensation layer temperature sequence to obtain the center height of the condensation layer includes: Step 401, determining the temperature of the zth height time series within Y moments of the monitoring period; Step 402: sort the temperatures of the zth height time series from small to large to form a feature sorting, intercept a preset number of mode temperatures at both ends of the feature sorting to form a low temperature set and a high temperature set, and fit the low temperature set and the high temperature set to obtain a low temperature curve and a high temperature curve respectively; 1≤z≤Z, where z is a positive integer; It should be noted that the low temperature set and the high temperature set are fitted by the nonlinear least squares method.

[0033] Step 403, determining a comprehensive temperature difference index based on the low temperature curve and the high temperature curve at the z-th height; In detail, the process of obtaining the comprehensive temperature difference index is as follows: Step 4031, determine the highest temperature of the high temperature curve at the zth height ; Step 4032, then connect the Z highest temperature , , forming a closed mathematical plane and determining the center of mass of the mathematical plane ; Step 4033, calculate the maximum temperature of the high temperature curve at the zth height and The Euclidean distance of , the first temperature difference component is obtained; Step 4034: Similarly, determine the lowest temperature of the low temperature curve at the zth height. , then for the minimum temperature Repeat steps 4031 to 4033 to obtain a second temperature difference component; Step 4034: weightedly fuse the first temperature difference component and the second temperature difference component to obtain a comprehensive temperature difference index; wherein the weighted weight of the first temperature difference component and the weighted weight of the second temperature difference component are both not 0, and the sum is 1.

[0034] In detail, the comprehensive temperature difference index comprehensively reflects the significance of temperature stratification at that altitude. The higher the index, the more likely it is that the altitude is in the condensation layer area at the junction of cold and hot.

[0035] Step 404: If the comprehensive temperature difference index at the z-th height is greater than the preset temperature difference threshold, then mark the z-th height as a candidate condensation layer; Specifically, the preset temperature difference threshold is a critical value for determining whether a height may belong to a condensation layer. If the comprehensive temperature difference index of the z-th height is greater than the preset temperature difference threshold, the height is marked as a candidate condensation layer.

[0036] Step 405: Perform a connected domain analysis on the marked heights among the Z heights, take each connected domain among the Z heights as a candidate condensation layer, and record the starting height and ending height of each candidate condensation layer, as well as the temperature range during the monitoring period; In detail, a connected domain analysis is performed on all the heights marked as candidate condensation layers in the Z heights, and spatially continuous candidate heights are merged into a candidate condensation layer region.

[0037] Step 406: Determine the condensation temperature range of the gas wall-mounted boiler; if the condensation temperature range of the gas wall-mounted boiler is within the temperature range of the candidate condensation layer during the monitoring period, mark the candidate condensation layer as valid; Specifically, the condensation temperature range of the gas boiler is measured. This range is determined by the physical properties of water vapor condensation. If the temperature range of a candidate condensation layer during the monitoring period completely encompasses the condensation temperature range, the candidate condensation layer is marked as valid. This screened candidate condensation layer meets the physical conditions for condensation to occur and is therefore a true condensation layer.

[0038] In step 407 , each valid candidate condensation layer is taken as a condensation layer, the starting height and the ending height of each condensation layer are determined, and the center height of the condensation layer is calculated based on the length weighted method.

[0039] Specifically, each valid candidate condensation layer is treated as an actual condensation layer, and its starting and ending heights are determined. The geometric center of the condensation layer is calculated based on the length weighting method, that is, the influence of the length of different segments of the condensation layer on the center position is weighted to obtain the center height of the condensation layer.

[0040] In one embodiment of the present invention, the process of obtaining the lateral drift error and the vertical drift error is as follows: Step 501: Repeat steps 301 to 310 within the confidence period to obtain a reference position of the convection lateral position; repeat steps 401 to 408 to obtain a reference height of the center height of the condensation layer; In step 502, the lateral position of the convection corresponding to the monitoring time period is subtracted from the reference position of the lateral position of the convection during the confidence time period to obtain a lateral drift error; the center height of the condensation layer corresponding to the monitoring time period is subtracted from the reference height of the center height of the condensation layer to obtain a vertical drift error.

[0041] In detail, a confidence period is set. The confidence period is the duration of time that the system is in a stable operating state. During this period, the operating parameters such as load and flow of the gas wall-mounted boiler fluctuate less, which can reflect its typical characteristics when it is highly efficient in heat exchange. Within the confidence period, steps 301 to 310 of the first identification process are repeatedly executed multiple times. By analyzing the supply water temperature sequence and the return water temperature sequence, multiple convection lateral position values ​​are obtained, and their statistical average value is taken as the reference position of the convection lateral position. The reference position corresponds to the axial position with the best coupling effect of the supply and return water. At the same time, steps 401 to 408 of the second identification process are repeatedly executed, and the condensation layer temperature sequence is analyzed to obtain multiple center height values ​​of the condensation layer. The statistical average value is taken as the reference height of the center height of the condensation layer. The reference height corresponds to the vertical position with the highest efficiency in condensation latent heat recovery.

[0042] During the dynamic operation of the system, a monitoring time period is selected, and the convection lateral position corresponding to the time period is obtained through the first recognition process. The difference between the difference and the reference position of the convection lateral position determined in step 501 is calculated. The result obtained is the lateral drift error, which reflects the degree to which the real-time convection lateral position deviates from the ideal position. Simultaneously, the center height of the condensation layer corresponding to the monitoring time period is obtained through the second recognition process. The difference between the difference and the reference height of the center height of the condensation layer determined in step 501 is calculated. The result obtained is the vertical drift error, which reflects the degree to which the real-time center height of the condensation layer deviates from the ideal height.

[0043] In one embodiment of the present invention, if the lateral drift error exceeds a limit, an axial correction is performed in combination with the convection slope, including: The slope increment of the water supply trajectory equation is calculated based on the lateral drift error as follows: ; in, represents the slope increment of the water supply trajectory equation, represents the horizontal scale factor, Indicates the lateral drift error; The larger the lateral drift error, the larger the slope increment needs to be adjusted to quickly offset the lateral drift.

[0044] Based on the slope increment of the water supply trajectory equation, the slope of the water supply trajectory equation is updated as follows: ; in, represents the updated slope of the water supply trajectory equation, represents the slope of the water supply trajectory equation; By modifying the temperature gradient (slope), the rate of decrease of the water supply temperature along the axial direction is changed.

[0045] Based on the updated slope of the water supply trajectory equation, the water supply temperature is adjusted as follows: ; in, Indicates updated water supply temperature. Indicates the water supply temperature during the monitoring period. represents the constant, Indicates the total length of the heat exchanger divided into X space segments.

[0046] Specifically, when the lateral drift error exceeds the limit (i.e., the deviation between the convection lateral position and the reference position during the monitoring period exceeds the allowable range), it indicates that the spatial position of the supply and return water coupling has deviated from the efficient heat exchange range, and the supply and return water temperature gradient needs to be adjusted through axial correction to bring the convection lateral position back to the reference.

[0047] The supply and return trajectories of water supply and return water meet the requirements ; When the slope of the water supply trajectory is , the water supply trajectory equation is , b is the intercept; combined with the constant sum relationship, the backwater trajectory equation is ; In order to keep the return water trajectory equation and the supply water trajectory equation as mirror images of each other, the axial focus Taking the temperature at the reference as the reference, we can get: , to adjust the water supply temperature and satisfy the mirror relationship between the adjusted return water trajectory equation and the water supply trajectory equation.

[0048] In one embodiment of the present invention, if the vertical drift error exceeds a limit, the system flow is adjusted to perform vertical correction, including: The flow gain coefficient is calculated based on the vertical drift error as follows: ; in, represents the flow gain coefficient, represents the vertical scale factor, Indicates vertical drift error; The linear relationship between vertical drift error and flow gain coefficient quantifies the flow rate adjustment required. The larger the drift error, the further the flow gain coefficient deviates from 1, and the larger the flow rate change required to quickly offset the altitude deviation.

[0049] Based on the flow gain coefficient, adjust the system flow as follows: ; in, Indicates updating system traffic. Indicates the system traffic during the monitoring period.

[0050] The flow gain coefficient is added to the system flow during the monitoring period to generate an updated system flow, changing the vertical velocity field and, in turn, adjusting the position of the condensation layer. Changes in system flow directly affect the vertical velocity, which in turn affects the stability of vertical temperature stratification: increasing flow velocity enhances mixing of high-temperature fluids, causing the condensation layer to move upward; decreasing flow velocity enhances deposition of low-temperature fluids, causing the condensation layer to move downward.

[0051] The above describes the embodiments of this embodiment, but this embodiment is not limited to the above specific implementation methods. The above specific implementation methods are merely illustrative and not restrictive. Ordinary technicians in this field can also make many forms based on the inspiration of this embodiment, all of which are protected by this embodiment.

Claims

1. An energy-saving heating management system, characterized in that: include: A data acquisition module is used to collect characteristic parameters of the gas wall-mounted boiler at fixed time intervals; Characteristic parameters include: supply water temperature sequence, return water temperature sequence, condensation layer temperature sequence, gas flow rate and system flow rate; a data processing module configured to perform a first identification process on the supply water temperature sequence and the return water temperature sequence to obtain a convection gradient path, the convection gradient path including a convection slope and a convection lateral position; and perform a second identification process on the condensation layer temperature sequence to obtain a center height of the condensation layer; An error measurement module is used to compare the convection lateral position with the preset convection lateral position to determine the lateral drift error; and compare the center height of the condensation layer with the preset center height of the condensation layer to determine the vertical drift error; The step-by-step processing module is used to determine whether the lateral drift error and vertical drift error exceed the limit; if the lateral drift error exceeds the limit, axial correction is performed in combination with the convection slope; if the vertical drift error exceeds the limit, the system flow is adjusted for vertical correction.

2. The energy-saving heating management system according to claim 1, characterized in that: Collect characteristic parameters, including: X sets of supply water temperature probes and X sets of return water temperature probes are arranged at fixed intervals along the axial direction of the gas wall-mounted boiler heat exchanger to collect X supply water temperatures and X return water temperatures, forming a supply water temperature sequence and a return water temperature sequence; Z groups of temperature probes are arranged along the vertical centerline of the heat exchanger of the gas wall-mounted boiler to collect temperature sequences at Z heights and form the condensation layer temperature sequence; The gas flow and system flow are collected separately through the system flow meter of the gas wall-mounted boiler.

3. The energy-saving heating management system according to claim 2, characterized in that: Performing a first identification process on the supply water temperature sequence and the return water temperature sequence to obtain a convection gradient path, including: Step 301: Divide the heat exchanger of the gas wall-mounted boiler into X space segments, where the xth space segment covers the xth group of supply water temperature probes and the xth group of return water temperature probes; Step 302: Construct an X×Y supply water matrix and a return water matrix within the Y time periods of the monitoring period. The element in the xth row and yth column of the supply water matrix represents the supply water temperature of the xth spatial segment at the yth time period, and the element in the xth row and yth column of the return water matrix represents the return water temperature of the xth spatial segment at the yth time period. 1≤x≤X, where x is a positive integer, and 1≤y≤Y, where y is a positive integer. Step 303: superimpose the water supply matrix and the return water matrix to form a superimposed matrix; Step 304: Calculate the difference between each element in the superposition matrix and a preset constant sum constant to form a constant sum error matrix; Step 305 , binarizing the constant sum error matrix using a preset constant sum error threshold to obtain a Boolean matrix; Step 306 , performing a connected domain analysis on the Boolean matrix, and taking each connected domain in the Boolean matrix as a candidate trajectory; Step 307: Map the mth candidate trajectory to the water supply matrix and the return water matrix, extract the water supply trajectory and return water trajectory corresponding to the mth candidate trajectory, and calculate the water supply trajectory equation and return water trajectory equation for the water supply trajectory and the return water trajectory respectively; Step 308: If there is at least one straight line between the water supply trajectory equation and the return water trajectory equation, so that the water supply trajectory equation and the return water trajectory equation are mirror images of each other, then mark the mth candidate trajectory; Step 309 , extracting the labeled candidate trajectories, determining the slope stability of each labeled candidate trajectory respectively, and generating a quality index for each labeled candidate trajectory; and taking the labeled candidate trajectory with the highest quality index as the convection gradient path; Step 310, determining the convection slope and convection lateral position of the convection gradient path; wherein the convection lateral position of the convection gradient path is determined based on the slope and intercept of the supply trajectory equation and the return trajectory equation corresponding to the convection gradient path.

4. The energy-saving heating management system according to claim 3, characterized in that: Performing a second recognition process on the condensation layer temperature sequence to obtain the center height of the condensation layer includes: Step 401, determining the temperature of the zth height time series within Y moments of the monitoring period; Step 402: sort the temperatures of the zth height time series from small to large to form a feature sorting, intercept a preset number of mode temperatures at both ends of the feature sorting to form a low temperature set and a high temperature set, and fit the low temperature set and the high temperature set to obtain a low temperature curve and a high temperature curve respectively; 1≤z≤Z, where z is a positive integer; Step 403, determining a comprehensive temperature difference index based on the low temperature curve and the high temperature curve at the z-th height; Step 404: If the comprehensive temperature difference index at the z-th height is greater than the preset temperature difference threshold, then mark the z-th height as a candidate condensation layer; Step 405: Perform a connected domain analysis on the marked heights among the Z heights, take each connected domain among the Z heights as a candidate condensation layer, and record the starting height and ending height of each candidate condensation layer, as well as the temperature range during the monitoring period; Step 406: Determine the condensation temperature range of the gas wall-mounted boiler; if the condensation temperature range of the gas wall-mounted boiler is within the temperature range of the candidate condensation layer during the monitoring period, mark the candidate condensation layer as valid; In step 407 , each valid candidate condensation layer is taken as a condensation layer, the starting height and the ending height of each condensation layer are determined, and the center height of the condensation layer is calculated based on the length weighted method.

5. The energy-saving heating management system according to claim 4, characterized in that: The process of obtaining the lateral drift error and vertical drift error is as follows: Step 501: Repeat steps 301 to 310 within the confidence period to obtain a reference position of the convection lateral position; repeat steps 401 to 408 to obtain a reference height of the center height of the condensation layer; In step 502, the lateral position of the convection corresponding to the monitoring time period is subtracted from the reference position of the lateral position of the convection during the confidence time period to obtain a lateral drift error; the center height of the condensation layer corresponding to the monitoring time period is subtracted from the reference height of the center height of the condensation layer to obtain a vertical drift error.

6. The energy-saving heat supply management system according to claim 5, characterized in that: If the lateral drift error exceeds the limit, axial correction is performed in combination with the convection slope, including: The slope increment of the water supply trajectory equation is calculated based on the lateral drift error as follows: ； in, represents the slope increment of the water supply trajectory equation, represents the horizontal scale factor, Indicates the lateral drift error; Based on the slope increment of the water supply trajectory equation, the slope of the water supply trajectory equation is updated as follows: ； in, represents the updated slope of the water supply trajectory equation, represents the slope of the water supply trajectory equation; Based on the updated slope of the water supply trajectory equation, the water supply temperature is adjusted as follows: ； in, Indicates updated water supply temperature. Indicates the water supply temperature during the monitoring period. represents the constant, Indicates the total length of the heat exchanger divided into X space segments.

7. The energy-saving heat supply management system according to claim 6, characterized in that: If the vertical drift error exceeds the limit, adjust the system flow for vertical correction, including: The flow gain coefficient is calculated based on the vertical drift error as follows: ； in, represents the flow gain coefficient, represents the vertical scale factor, Indicates vertical drift error; Based on the flow gain coefficient, adjust the system flow as follows: ； in, Indicates updating system traffic. Indicates the system traffic during the monitoring period.

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