Condenser heat load detection method, device, storage medium and electronic equipment

Abstract

The present disclosure relates to a method, device, storage medium, and electronic device for detecting the heat load of a condenser. The method comprises: obtaining the flue gas flow rate of a waste heat boiler, the flue gas temperature at the inlet of the waste heat boiler, the flue gas temperature at the outlet of the waste heat boiler, and the output power of a steam turbine generator; and calculating the heat load of the condenser based on the flue gas flow rate of the waste heat boiler, the flue gas temperature at the inlet of the waste heat boiler, the flue gas temperature at the outlet of the waste heat boiler, the output power of the steam turbine generator, and a heat balance equation with the waste heat boiler and steam turbine as the analysis objects. Through the above technical solution, the heat load of the condenser can be detected based on the heat balance equation with the waste heat boiler and steam turbine as the analysis objects. In this way, the heat load of the condenser can be detected without determining the circulating water flow rate in and out of the condenser or the energy released by the steam entering the condenser. The detection method is simple and highly accurate.

Description

Technical Field

[0001] The present disclosure relates to the field of thermal performance testing of generator sets, and in particular to a method, device, storage medium, and electronic equipment for detecting the thermal load of a condenser. Background Art

[0002] The heat load of the condenser is an important indicator for evaluating the performance of the condenser, and is also an important indicator for diagnosing the performance of the circulating water pump, cooling tower, etc. in the cold end system.

[0003] In related art, the heat load of a condenser is detected in two ways. In one way, the heat load of the condenser is determined by detecting the energy difference between the circulating water entering and leaving the condenser. In the other way, the heat load of the condenser is determined by detecting the energy released by the steam entering the condenser.

[0004] Determining the condenser's heat load by measuring the energy difference between the circulating water entering and exiting the condenser requires determining the circulating water flow rate within the condenser. Currently, there is no proven and reliable method for determining this flow rate. However, this method, which measures the energy released by steam entering the condenser, fails to accurately measure the exhaust steam (wet steam) enthalpy and flow rate from the steam turbine's low-pressure cylinder in real time. Therefore, it is impossible to accurately monitor and assess the energy released by internal leakage in the thermal system and the drain entering the condenser. Summary of the Invention

[0005] The purpose of the present disclosure is to provide a method, device, storage medium and electronic equipment for detecting the heat load of a condenser, which can detect the heat load of the condenser without determining the water flow in the condenser and the exhaust enthalpy and exhaust flow of the low-pressure cylinder of the steam turbine.

[0006] In order to achieve the above object, the present disclosure provides a method for detecting the heat load of a condenser, comprising:

[0007] Obtaining the flue gas flow rate of the waste heat boiler, the flue gas temperature at the inlet of the waste heat boiler, the flue gas temperature at the outlet of the waste heat boiler, and the output power of the steam turbine generator;

[0008] The heat load of the condenser is calculated based on the flue gas flow rate of the waste heat boiler, the flue gas temperature at the inlet of the waste heat boiler, the flue gas temperature at the outlet of the waste heat boiler, the output power of the steam turbine generator, and the heat balance equation with the waste heat boiler and steam turbine as the analysis objects.

[0009] Optionally, the calculating the heat load of the condenser based on the flue gas flow rate of the waste heat boiler, the flue gas temperature at the inlet of the waste heat boiler, the flue gas temperature at the outlet of the waste heat boiler, the output power of the steam turbine generator, and a heat balance equation with the waste heat boiler and steam turbine as the analysis objects as a whole includes:

[0010] determining the inlet flue gas enthalpy of the waste heat boiler according to the inlet flue gas temperature of the waste heat boiler;

[0011] determining the outlet flue gas enthalpy of the waste heat boiler according to the outlet flue gas temperature of the waste heat boiler;

[0012] The heat load of the condenser is calculated based on the flue gas flow rate of the waste heat boiler, the output power of the steam turbine generator, the inlet flue gas enthalpy of the waste heat boiler, the outlet flue gas enthalpy of the waste heat boiler, and the heat balance equation with the waste heat boiler and steam turbine as the analysis objects.

[0013] Optionally, determining the inlet flue gas enthalpy of the waste heat boiler according to the inlet flue gas temperature of the waste heat boiler includes: calculating the inlet flue gas enthalpy of the waste heat boiler according to the following formula:

[0014] h in =C in_d ×(T in -T in_d )+h in_d

[0015] Among them, C in_d is the specific heat capacity of the flue gas at the inlet of the waste heat boiler, T in is the measured value of the flue gas temperature at the inlet of the waste heat boiler, T in_d is the design value of the waste heat boiler inlet flue gas temperature, h in_d is the design value of the inlet flue gas enthalpy of the waste heat boiler, h in is the calculated value of the flue gas enthalpy at the inlet of the waste heat boiler;

[0016] Determining the outlet flue gas enthalpy of the waste heat boiler according to the outlet flue gas temperature of the waste heat boiler includes: calculating the outlet flue gas enthalpy of the waste heat boiler according to the following formula:

[0017] h out =C out_d ×(T out -T out_d )+h out_d

[0018] Among them, C out_d is the specific heat capacity of the exhaust gas at the waste heat boiler outlet, T out is the measured value of the flue gas temperature at the waste heat boiler outlet, T out_d is the design value of the exhaust gas temperature at the waste heat boiler outlet, h out_d is the design value of the exhaust gas enthalpy at the waste heat boiler outlet, h out is the calculated value of the flue gas enthalpy at the waste heat boiler outlet.

[0019] Optionally, the heat load of the condenser is calculated based on the flue gas flow rate of the waste heat boiler, the output power of the steam turbine generator, the inlet flue gas enthalpy of the waste heat boiler, the outlet flue gas enthalpy of the waste heat boiler, and a heat balance equation with the waste heat boiler and steam turbine as the analysis objects, including:

[0020] The heat load of the condenser is calculated according to the following heat balance equation:

[0021]

[0022] Among them, Q c is the heat load of the condenser, F g is the flue gas flow rate of the waste heat boiler, θ r is the heat loss coefficient of the waste heat boiler and the steam turbine, P e is the output power of the steam turbine generator, η e is the efficiency of the steam turbine generator, ΔP mech_loss is the shafting mechanical loss of the steam turbine.

[0023] Optionally, the method further includes:

[0024] When the heat load of the condenser is higher than a preset condenser heat load threshold, it is determined that the heat load of the condenser is too high.

[0025] The present disclosure also provides a condenser heat load detection device, comprising:

[0026] an acquisition module configured to acquire the flue gas flow rate of the waste heat boiler, the flue gas temperature at the inlet of the waste heat boiler, the flue gas temperature at the outlet of the waste heat boiler, and the output power of the steam turbine generator;

[0027] The calculation module is configured to calculate the heat load of the condenser based on the flue gas flow rate of the waste heat boiler, the flue gas temperature at the inlet of the waste heat boiler, the flue gas temperature at the outlet of the waste heat boiler, the output power of the steam turbine generator, and the heat balance equation with the waste heat boiler and the steam turbine as a whole as the analysis object.

[0028] Optionally, the calculation module further includes:

[0029] a first determining submodule configured to determine the inlet flue gas enthalpy of the waste heat boiler according to the inlet flue gas temperature of the waste heat boiler;

[0030] a second determining submodule configured to determine the outlet flue gas enthalpy of the waste heat boiler according to the outlet flue gas temperature of the waste heat boiler;

[0031] The calculation submodule is configured to calculate the heat load of the condenser based on the flue gas flow rate of the waste heat boiler, the output power of the steam turbine generator, the inlet flue gas enthalpy of the waste heat boiler, the outlet flue gas enthalpy of the waste heat boiler, and the heat balance equation with the waste heat boiler and steam turbine as a whole as the analysis object.

[0032] Optionally, the first determination submodule is further configured to calculate the inlet flue gas enthalpy of the waste heat boiler according to the following formula:

[0033] h in =C in_d ×(T in -T in_d )+h in_d

[0034] Among them, C in_d is the specific heat capacity of the flue gas at the inlet of the waste heat boiler, T in is the measured value of the flue gas temperature at the inlet of the waste heat boiler, T in_d is the design value of the waste heat boiler inlet flue gas temperature, h in_d is the design value of the inlet flue gas enthalpy of the waste heat boiler, h in is the calculated value of the flue gas enthalpy at the inlet of the waste heat boiler;

[0035] The second determination submodule is further configured to calculate the outlet flue gas enthalpy of the waste heat boiler according to the following formula:

[0036] h out =C out_d ×(T out -T out_d )+h out_d

[0037] Among them, C out_d is the specific heat capacity of the exhaust gas at the waste heat boiler outlet, T out is the measured value of the flue gas temperature at the waste heat boiler outlet, T out_d is the design value of the exhaust gas temperature at the waste heat boiler outlet, h out_d is the design value of the exhaust gas enthalpy at the waste heat boiler outlet, h out is the calculated value of the flue gas enthalpy at the waste heat boiler outlet.

[0038] The present disclosure further provides a non-transitory computer-readable storage medium having a computer program stored thereon, which implements the steps of the above-mentioned method for detecting the heat load of a condenser when the program is executed by a processor.

[0039] The present disclosure also provides an electronic device, comprising:

[0040] a memory having a computer program stored thereon;

[0041] The processor is configured to execute the computer program in the memory to implement the steps of the above-mentioned method for detecting the heat load of the condenser.

[0042] Through the above technical solution, the heat load of the condenser is detected based on the heat balance equation with the waste heat boiler and steam turbine as the analysis object. In this way, there is no need to determine the circulating water flow rate in and out of the condenser, nor to determine the energy released by the steam entering the condenser, and the heat load of the condenser can be detected. The detection method is simple and highly accurate.

[0043] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following detailed description, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0045] Figure 1 The figure is a flow chart showing a method for detecting a heat load of a condenser according to an exemplary embodiment.

[0046] Figure 2 The present invention is a structural schematic diagram of a split-shaft combined cycle unit to which the heat load detection method for a condenser provided by the present invention is applicable.

[0047] Figure 3 The figure is a block diagram showing a heat load detection device for a condenser according to an exemplary embodiment.

[0048] Figure 4 It is a block diagram of an electronic device according to an exemplary embodiment.

[0049] Description of Reference Numerals

[0050] 1-Gas turbine, 2-Waste heat boiler, 3-Steam turbine, 4-Condenser, 5-Analysis object, 6-Steam turbine generator, 7-Waste heat boiler inlet flue, 8-Waste heat boiler exhaust duct DETAILED DESCRIPTION

[0051] The following describes the specific embodiments of the present disclosure in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure and are not intended to limit the present disclosure.

[0052] It should be noted that all actions of acquiring signals, information or data in the present disclosure are carried out in compliance with the corresponding data protection laws and policies of the country where they are located and with the authorization given by the owner of the corresponding device.

[0053] Figure 1 FIG. 1 is a flow chart showing a method for detecting the heat load of a condenser according to an exemplary embodiment. Figure 1 As shown, the method for detecting the heat load of a condenser includes step S101 and step S102.

[0054] The heat load detection method for a condenser provided by the present disclosure can be applied to a split-shaft combined cycle unit consisting of a gas turbine, a waste heat boiler, and a steam turbine. Figure 2 The figure is a schematic diagram of the structure of a split-shaft combined cycle unit to which the heat load detection method for the condenser provided by the present disclosure is applicable. Figure 2 As shown, the split-shaft combined cycle unit may include a gas turbine 1, a waste heat boiler 2, a steam turbine 3, a condenser 4, and a steam turbine generator 6. Flue gas from the gas turbine 1 enters the waste heat boiler 2 through the waste heat boiler inlet flue 7 and is discharged from the waste heat boiler 2 through the waste heat boiler exhaust duct 8. Figure 2 The structure in is well known to those skilled in the art, so it will not be described in detail here.

[0055] In step S101 , the flue gas flow rate of the waste heat boiler, the flue gas temperature at the inlet of the waste heat boiler, the flue gas temperature at the outlet of the waste heat boiler, and the output power of the steam turbine generator are obtained.

[0056] The flue gas flow rate of a waste heat boiler refers to the amount of flue gas flowing through the waste heat boiler per unit time. Flue gas volume can be measured in either volume or mass. For example, the flue gas flow rate of a waste heat boiler can be the volume of flue gas flowing through the waste heat boiler per unit time. Another example is the flue gas flow rate of a waste heat boiler can be the mass of flue gas flowing through the waste heat boiler per unit time.

[0057] The inlet flue gas temperature of the waste heat boiler refers to the flue gas temperature at the inlet of the waste heat boiler. The outlet flue gas temperature of the waste heat boiler refers to the flue gas temperature at the outlet of the waste heat boiler.

[0058] In one embodiment, no less than four temperature measuring elements may be used to measure the exhaust gas temperature at the exhaust heat boiler inlet, and the average value of the exhaust gas temperature at the exhaust heat boiler inlet measured by each temperature measuring element is determined as the exhaust gas temperature at the exhaust heat boiler inlet.

[0059] In another embodiment, no less than 6 temperature measuring elements may be used to measure the exhaust gas temperature at the exhaust heat boiler outlet, and the average value of the exhaust gas temperature at the exhaust heat boiler outlet measured by each temperature measuring element is determined as the exhaust gas temperature at the exhaust heat boiler outlet.

[0060] A steam turbine generator is one that uses the flue gas from a waste heat boiler as its energy source. In other words, the flue gas from the waste heat boiler heats water into steam, which drives the steam turbine, which in turn drives the generator to generate electricity. The power output of the steam turbine generator is its output power. In one embodiment, the output power of the steam turbine generator can be measured using a measuring element with an instrument accuracy of at least 0.5.

[0061] In step S102, the heat load of the condenser is calculated based on the flue gas flow rate of the waste heat boiler, the flue gas temperature at the inlet and outlet of the waste heat boiler, the output power of the steam turbine generator, and the heat balance equation with the waste heat boiler and steam turbine as the analysis objects.

[0062] The steam turbine uses the flue gas from the waste heat boiler as its energy source. The waste heat boiler and steam turbine are taken as the analysis object, and the input energy and output energy of the analysis object (i.e. the input energy and output energy of the waste heat boiler and steam turbine as a whole) are analyzed. Figure 2 As shown, analysis object 5 is composed of waste heat boiler 2 and steam turbine 3. The heat balance equation established by analyzing the input and output energies of this analysis object (the waste heat boiler and steam turbine combined) (for example, an equation where the left side represents the input energy to the analysis object and the right side represents the output energy from the analysis object) is the heat balance equation for the waste heat boiler and steam turbine combined as the analysis object.

[0063] The heat load of the condenser is equal to the energy output to the condenser by the analysis target (the waste heat boiler and steam turbine combined) in the heat balance equation for the combined analysis target. In step S102, the input energy to the analysis target (the waste heat boiler and steam turbine combined) and the output energy from the analysis target (excluding the energy output to the condenser) are determined. Therefore, the energy output to the condenser by the analysis target (the waste heat boiler and steam turbine combined) can be calculated based on the heat balance equation, thereby detecting the heat load of the condenser.

[0064] Through the above technical solution, the heat load of the condenser is detected based on the heat balance equation with the waste heat boiler and steam turbine as the analysis object. In this way, there is no need to determine the circulating water flow rate in and out of the condenser, nor to determine the energy released by the steam entering the condenser, and the heat load of the condenser can be detected. The detection method is simple and highly accurate.

[0065] In another embodiment, the heat load of the condenser is calculated based on the flue gas flow rate of the waste heat boiler, the flue gas temperature at the inlet of the waste heat boiler, the flue gas temperature at the outlet of the waste heat boiler, the output power of the steam turbine generator, and a heat balance equation that analyzes the waste heat boiler and steam turbine as a whole, including:

[0066] Determine the inlet flue gas enthalpy of the waste heat boiler according to the inlet flue gas temperature of the waste heat boiler;

[0067] Determine the outlet flue gas enthalpy of the waste heat boiler according to the outlet flue gas temperature of the waste heat boiler;

[0068] The heat load of the condenser is calculated based on the flue gas flow rate of the waste heat boiler, the output power of the steam turbine generator, the inlet flue gas enthalpy of the waste heat boiler, the outlet flue gas enthalpy of the waste heat boiler, and the heat balance equation with the waste heat boiler and steam turbine as the analysis objects.

[0069] The inlet flue gas enthalpy of the waste heat boiler refers to the flue gas enthalpy at the inlet of the waste heat boiler, that is, the flue gas enthalpy when the flue gas flows into the waste heat boiler. The outlet flue gas enthalpy of the waste heat boiler refers to the flue gas enthalpy at the outlet of the waste heat boiler, that is, the flue gas enthalpy when the flue gas is discharged from the waste heat boiler.

[0070] In the heat balance equation with the waste heat boiler and steam turbine as a whole as the analysis object, the energy input to the analysis object may include the energy input into the analysis object from the flue gas side, and the energy output from the analysis object may include the energy output to the steam turbine generator, the energy output to the condenser, and the energy loss dissipated to the atmosphere.

[0071] The energy input from the flue gas side into the analysis object can be determined based on the flue gas flow rate of the waste heat boiler, the inlet flue gas enthalpy of the waste heat boiler, and the outlet flue gas enthalpy of the waste heat boiler. The energy output from the analysis object to the steam turbine generator can be determined based on the steam turbine generator's output power, the steam turbine generator efficiency, and the steam turbine shafting mechanical losses. The steam turbine generator efficiency can be the design value of the steam turbine generator efficiency, and the steam turbine shafting mechanical losses can be the design value of the steam turbine shafting mechanical losses. In other words, the steam turbine generator efficiency and steam turbine shafting mechanical losses can be calculated based on the factory design values ​​of the steam turbine generator or steam turbine. The energy dissipated into the atmosphere by the analysis object can be determined based on the energy input from the flue gas side into the analysis object and the design heat dissipation loss coefficients of the waste heat boiler and steam turbine.

[0072] In this embodiment, the heat load of the condenser can be detected based on the energy input to the analysis object (the waste heat boiler and the entire steam turbine) and the energy output from the analysis object. The detection method is simple and the detection accuracy is high.

[0073] In another embodiment, determining the inlet flue gas enthalpy of the waste heat boiler according to the inlet flue gas temperature of the waste heat boiler includes: calculating the inlet flue gas enthalpy of the waste heat boiler according to the following formula:

[0074] h in =C in_d ×(T in -Tin_d )+h in_d (1)

[0075] Among them, C in_d is the specific heat capacity of the flue gas at the inlet of the waste heat boiler, T in is the measured value of the flue gas temperature at the waste heat boiler inlet, T in_d is the design value of the waste heat boiler inlet flue gas temperature, h in_d is the design value of the flue gas enthalpy at the inlet of the waste heat boiler, h in is the calculated value of the flue gas enthalpy at the waste heat boiler inlet;

[0076] Determining the outlet flue gas enthalpy of the waste heat boiler according to the outlet flue gas temperature of the waste heat boiler includes: calculating the outlet flue gas enthalpy of the waste heat boiler according to the following formula:

[0077] h out =C out_d ×(T out -T out_d )+h out_d (2)

[0078] Among them, C out_d is the specific heat capacity of the flue gas at the waste heat boiler outlet, T out is the measured value of the exhaust gas temperature at the waste heat boiler outlet, T out_d is the design value of the exhaust gas temperature at the waste heat boiler outlet, h out_d is the design value of the exhaust gas enthalpy at the waste heat boiler outlet, h out is the calculated value of the flue gas enthalpy at the waste heat boiler outlet.

[0079] In formula (1), C in_d is the design value, that is, C in_d It can be the designed specific heat capacity of the flue gas when it enters the waste heat boiler, or C in_d It can be the designed specific heat capacity of the flue gas when it is discharged from the gas turbine and enters the waste heat boiler. in_d The unit of T is kJ / (kg·℃). in It is the measured value, unit is ℃. in_d is the design value, that is, T in_d It can be the designed temperature of the flue gas when it enters the waste heat boiler. in_d The unit is °C. in_d is the design value, that is, h in_d It can be the designed enthalpy of the flue gas when it enters the waste heat boiler. In formula (1), h in_d The unit is kJ / kg. in The unit is kJ / kg.

[0080] In formula (2), C out_d is the design value, that is, Cout_d It can be the designed specific heat capacity of the flue gas when it is discharged from the waste heat boiler. out_d The unit of T is kJ / (kg·℃). out It is the measured value, unit is ℃. out_d is the design value, that is, T out_d It can be the designed temperature of the flue gas when it is discharged from the waste heat boiler. out_d The unit is °C. out_d is the design value, that is, h out_d It can be the designed enthalpy of the flue gas when it is discharged from the waste heat boiler. In formula (2), h out_d The unit is kJ / kg.

[0081] The design values ​​(C in_d 、T in_d 、h in_d 、C out_d 、T out_d 、h out_d ) are the design values ​​of the waste heat boiler when it leaves the factory.

[0082] In this embodiment, the inlet flue gas enthalpy of the waste heat boiler and the outlet flue gas enthalpy of the waste heat boiler can be determined according to the inlet flue gas temperature of the waste heat boiler and the outlet flue gas temperature of the waste heat boiler, respectively. The idea is that the product of the designed specific heat capacity of the flue gas and the temperature difference between the measured flue gas temperature and the designed flue gas temperature is approximately equal to the difference between the measured flue gas enthalpy and the designed flue gas enthalpy. The method is simple and highly accurate.

[0083] In another embodiment, the heat load of the condenser is calculated based on the flue gas flow rate of the waste heat boiler, the output power of the steam turbine generator, the flue gas enthalpy at the inlet of the waste heat boiler, the flue gas enthalpy at the outlet of the waste heat boiler, and a heat balance equation for the waste heat boiler and steam turbine as a whole, including:

[0084] The heat load of the condenser is calculated according to the following heat balance equation:

[0085]

[0086] Among them, Q c is the heat load of the condenser, F g is the flue gas flow rate of the waste heat boiler, θ r is the heat loss coefficient of waste heat boiler and steam turbine, P e is the output power of the steam turbine generator, η e is the efficiency of the steam turbine generator, ΔP mech_loss is the mechanical loss of the steam turbine shaft system.

[0087] In formula (3), Q cThe unit is kW. g The heat loss coefficient θ of the waste heat boiler and steam turbine can be determined based on the heat loss coefficient designed at the factory for the waste heat boiler and steam turbine. r In one embodiment, the heat loss coefficients of the waste heat boiler and the steam turbine can be determined based on the sum of the design value of the heat loss coefficient of the waste heat boiler and the design value of the heat loss coefficient of the steam turbine. e is the measured value, unit is kW. e is the design value of the steam turbine generator when it leaves the factory, ΔP mech_loss It is the design value of the steam turbine when it leaves the factory, in kW.

[0088] In this embodiment, the heat load of the condenser can be determined according to calculation formula (3), the method is simple, and the detection accuracy is high.

[0089] In yet another embodiment, the method further includes: determining that the thermal load of the condenser is too high when the thermal load of the condenser is higher than a preset thermal load threshold of the condenser.

[0090] The condenser heat load threshold can be preset by the maintenance personnel. When the condenser heat load is higher than the preset condenser heat load threshold, it can be determined that the condenser heat load is too high, and a prompt message can be output to prompt the maintenance personnel to take measures to reduce the condenser heat load.

[0091] Figure 3 FIG. 1 is a block diagram of a heat load detection device for a condenser according to an exemplary embodiment. Figure 3 As shown, the condenser heat load detection device 200 includes an acquisition module 201 and a calculation module 202 .

[0092] The acquisition module 201 is configured to acquire the flue gas flow rate of the waste heat boiler, the flue gas temperature at the inlet of the waste heat boiler, the flue gas temperature at the outlet of the waste heat boiler, and the output power of the steam turbine generator.

[0093] The calculation module 202 is configured to calculate the heat load of the condenser based on the flue gas flow rate of the waste heat boiler, the flue gas temperature at the inlet of the waste heat boiler, the flue gas temperature at the outlet of the waste heat boiler, the output power of the steam turbine generator, and the heat balance equation with the waste heat boiler and the steam turbine as the analysis objects.

[0094] In yet another embodiment, the calculation module 202 further includes a first determination submodule, a second determination submodule, and a calculation submodule.

[0095] The first determination submodule is configured to determine the inlet flue gas enthalpy of the waste heat boiler according to the inlet flue gas temperature of the waste heat boiler.

[0096] The second determining submodule is configured to determine the outlet flue gas enthalpy of the waste heat boiler according to the outlet flue gas temperature of the waste heat boiler.

[0097] The calculation submodule is configured to calculate the heat load of the condenser based on the flue gas flow rate of the waste heat boiler, the output power of the steam turbine generator, the inlet flue gas enthalpy of the waste heat boiler, the outlet flue gas enthalpy of the waste heat boiler, and the heat balance equation with the waste heat boiler and steam turbine as the analysis objects.

[0098] In yet another embodiment, the first determination submodule is further configured to calculate the inlet flue gas enthalpy of the waste heat boiler according to the following formula:

[0099] h in =C in_d ×(T in -T in_d )+h in_d

[0100] Among them, C in_d is the specific heat capacity of the flue gas at the inlet of the waste heat boiler, T in is the measured value of the flue gas temperature at the waste heat boiler inlet, T in_d is the design value of the waste heat boiler inlet flue gas temperature, h in_d is the design value of the flue gas enthalpy at the inlet of the waste heat boiler, h in is the calculated value of the flue gas enthalpy at the waste heat boiler inlet;

[0101] The second determination submodule is further configured to calculate the outlet flue gas enthalpy of the waste heat boiler according to the following formula:

[0102] h out =C out_d ×(T out -T out_d )+h out_d

[0103] Among them, C out_d is the specific heat capacity of the flue gas at the waste heat boiler outlet, T out is the measured value of the exhaust gas temperature at the waste heat boiler outlet, T out_d is the design value of the exhaust gas temperature at the waste heat boiler outlet, h out_d is the design value of the exhaust gas enthalpy at the waste heat boiler outlet, h out is the calculated value of the flue gas enthalpy at the waste heat boiler outlet.

[0104] In yet another embodiment, the calculation submodule is further configured to calculate the heat load of the condenser according to the following heat balance equation:

[0105]

[0106] Among them, Qc is the heat load of the condenser, F g is the flue gas flow rate of the waste heat boiler, θ r is the heat loss coefficient of waste heat boiler and steam turbine, P e is the output power of the steam turbine generator, η e is the efficiency of the steam turbine generator, ΔP mech_loss is the mechanical loss of the steam turbine shaft system.

[0107] In yet another embodiment, the condenser heat load detection device 200 further includes a determination module.

[0108] The determination module is configured to determine that the heat load of the condenser is too high when the heat load of the condenser is higher than a preset condenser threshold.

[0109] Regarding the apparatus in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0110] Through the above technical solution, the heat load of the condenser is detected based on the heat balance equation with the waste heat boiler and steam turbine as the analysis object. In this way, there is no need to determine the circulating water flow rate in and out of the condenser, nor to determine the energy released by the steam entering the condenser, and the heat load of the condenser can be detected. The detection method is simple and highly accurate.

[0111] The present disclosure further provides a non-transitory computer-readable storage medium having a computer program stored thereon, which implements the steps of the above-mentioned method for detecting the heat load of a condenser when the program is executed by a processor.

[0112] Figure 4 A block diagram of an electronic device 700 is shown according to an exemplary embodiment. Figure 4 As shown, the electronic device 700 may include: a processor 701 , a memory 702 , and may further include one or more of a multimedia component 703 , an input / output (I / O) interface 704 , and a communication component 705 .

[0113] The processor 701 is used to control the overall operation of the electronic device 700 to complete all or part of the steps in the above-mentioned condenser heat load detection method. The memory 702 is used to store various types of data to support the operation of the electronic device 700. Such data may include, for example, instructions for any application or method operating on the electronic device 700, as well as application-related data, such as contact information, sent and received messages, pictures, audio, video, etc. The memory 702 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk. The multimedia component 703 may include a screen and an audio component. The screen may be, for example, a touch screen, and the audio component is used to output and / or input audio signals. For example, the audio component may include a microphone for receiving external audio signals. The received audio signal may be further stored in the memory 702 or sent via the communication component 705. The audio component also includes at least one speaker for outputting audio signals. The I / O interface 704 provides an interface between the processor 701 and other interface modules. The above-mentioned other interface modules may be a keyboard, a mouse, buttons, etc. These buttons may be virtual buttons or physical buttons. The communication component 705 is used for wired or wireless communication between the electronic device 700 and other devices. Wireless communication, such as Wi-Fi, Bluetooth, Near Field Communication (NFC), 2G, 3G, 4G, NB-IOT, eMTC, or other 5G, etc., or a combination of one or more thereof, is not limited here. Therefore, the corresponding communication component 705 may include: a Wi-Fi module, a Bluetooth module, an NFC module, etc.

[0114] In an exemplary embodiment, the electronic device 700 can be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the above-mentioned condenser thermal load detection method.

[0115] In another exemplary embodiment, a computer-readable storage medium including program instructions is also provided. When executed by a processor, the program instructions implement the steps of the aforementioned condenser heat load detection method. For example, the computer-readable storage medium may be the aforementioned memory 702 including the program instructions. The program instructions may be executed by the processor 701 of the electronic device 700 to implement the aforementioned condenser heat load detection method.

[0116] In another exemplary embodiment, a computer program product is further provided. The computer program product includes a computer program executable by a programmable device, and the computer program has a code portion for executing the above-mentioned condenser heat load detection method when executed by the programmable device.

[0117] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the scope of protection of the present disclosure.

[0118] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0119] In addition, the various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A method for detecting heat load of a condenser, characterized in that: include: Obtaining the flue gas flow rate of the waste heat boiler, the flue gas temperature at the inlet of the waste heat boiler, the flue gas temperature at the outlet of the waste heat boiler, and the output power of the steam turbine generator; determining the inlet flue gas enthalpy of the waste heat boiler according to the inlet flue gas temperature of the waste heat boiler; determining the outlet flue gas enthalpy of the waste heat boiler according to the outlet flue gas temperature of the waste heat boiler; Calculating the heat load of the condenser based on the flue gas flow rate of the waste heat boiler, the output power of the steam turbine generator, the inlet flue gas enthalpy of the waste heat boiler, the outlet flue gas enthalpy of the waste heat boiler, and a heat balance equation that takes the waste heat boiler and steam turbine as the analysis objects as a whole; The inlet flue gas enthalpy of the waste heat boiler is calculated according to the following formula: in, is the specific heat capacity of the flue gas at the inlet of the waste heat boiler, is the measured value of the flue gas temperature at the inlet of the waste heat boiler, is the design value of the waste heat boiler inlet flue gas temperature, is the design value of the inlet flue gas enthalpy of the waste heat boiler, is the calculated value of the flue gas enthalpy at the inlet of the waste heat boiler; The outlet flue gas enthalpy of the waste heat boiler is calculated according to the following formula: in, is the specific heat capacity of the exhaust gas at the waste heat boiler outlet, is the measured value of the flue gas temperature at the waste heat boiler outlet, is the design value of the exhaust gas temperature at the waste heat boiler outlet, is the design value of the exhaust gas enthalpy at the waste heat boiler outlet, is the calculated value of the flue gas enthalpy at the waste heat boiler outlet; The heat load of the condenser is calculated according to the following heat balance equation: in, is the heat load of the condenser, is the flue gas flow rate of the waste heat boiler, is the heat loss coefficient of the waste heat boiler and the steam turbine, is the output electric power of the steam turbine generator, is the efficiency of the steam turbine generator, is the shafting mechanical loss of the steam turbine.

2. The method according to claim 1, characterized in that The method further comprises: When the heat load of the condenser is higher than a preset condenser heat load threshold, it is determined that the heat load of the condenser is too high.

3. A heat load detection device for a condenser, characterized in that: include: an acquisition module configured to acquire the flue gas flow rate of the waste heat boiler, the flue gas temperature at the inlet of the waste heat boiler, the flue gas temperature at the outlet of the waste heat boiler, and the output power of the steam turbine generator; a calculation module configured to calculate the heat load of the condenser based on the flue gas flow rate of the waste heat boiler, the flue gas temperature at the inlet of the waste heat boiler, the flue gas temperature at the outlet of the waste heat boiler, the output power of the steam turbine generator, and a heat balance equation with the waste heat boiler and steam turbine as the analysis object; The calculation module also includes: a first determining submodule configured to determine the inlet flue gas enthalpy of the waste heat boiler according to the inlet flue gas temperature of the waste heat boiler; a second determining submodule configured to determine the outlet flue gas enthalpy of the waste heat boiler according to the outlet flue gas temperature of the waste heat boiler; a calculation submodule configured to calculate the heat load of the condenser based on the flue gas flow rate of the waste heat boiler, the output power of the steam turbine generator, the inlet flue gas enthalpy of the waste heat boiler, the outlet flue gas enthalpy of the waste heat boiler, and a heat balance equation with the waste heat boiler and steam turbine as the analysis objects; The first determination submodule is further configured to calculate the inlet flue gas enthalpy of the waste heat boiler according to the following formula: in, is the specific heat capacity of the flue gas at the inlet of the waste heat boiler, is the measured value of the flue gas temperature at the inlet of the waste heat boiler, is the design value of the waste heat boiler inlet flue gas temperature, is the design value of the inlet flue gas enthalpy of the waste heat boiler, is the calculated value of the flue gas enthalpy at the inlet of the waste heat boiler; The second determination submodule is further configured to calculate the outlet flue gas enthalpy of the waste heat boiler according to the following formula: in, is the specific heat capacity of the exhaust gas at the waste heat boiler outlet, is the measured value of the flue gas temperature at the waste heat boiler outlet, is the design value of the exhaust gas temperature at the waste heat boiler outlet, is the design value of the exhaust gas enthalpy at the waste heat boiler outlet, is the calculated value of the flue gas enthalpy at the waste heat boiler outlet; The calculation submodule is further configured to calculate the heat load of the condenser according to the following heat balance equation: in, is the heat load of the condenser, is the flue gas flow rate of the waste heat boiler, is the heat loss coefficient of the waste heat boiler and steam turbine, is the output power of the steam turbine generator, is the efficiency of the steam turbine generator, is the mechanical loss of the steam turbine shaft system.

4. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the steps of the method according to claim 1 or 2 are implemented.

5. An electronic device, characterized in that: include: a memory having a computer program stored thereon; A processor, configured to execute the computer program in the memory to implement the steps of the method according to claim 1 or 2.

Images