Ring cooler heat extraction system and heat power measurement method, device and equipment thereof, and storage medium

Abstract

The application provides a ring cooler heat extraction system and a heat power measurement method, device and equipment thereof and a storage medium. A current heat power input value entering an air extraction cover is obtained, a node flue gas heat power value entering a first end of a flue gas duct at a first time node at the end of a preset time length is obtained, a difference between the current heat power input value and the node flue gas heat power value is determined, and the difference is taken as a current effective heat power of the ring cooler heat extraction system. The application divides the cage space of the air extraction cover into multiple small spaces, and straightens the airflow. The actually measured flue gas flow and temperature in each independent subspace can accurately reflect the flue gas flow and temperature of the corresponding independent subspace. The finally obtained current effective heat power can be used for evaluating the power generation of a waste heat power generation device or the health state of the ring cooler or the heat preservation performance of a flue gas and air system.

Description

Technical Field

[0001] This invention relates to the field of sintering technology, and in particular to a heat extraction system for an annular cooler and its heat power measurement method, apparatus, equipment, and storage medium. Background Technology

[0002] like Figure 1 As shown, after the sinter is cooled, the conveyor belt of the subsequent finished product system can transport the sinter normally. Obviously, under the premise of simply meeting the sintering process requirements, when the average temperature of the sinter entering the annular cooler is low, the cooling air volume required for the cooling process is small, which can reduce the energy consumption of the cooling process. However, the sinter carries a large amount of heat, which is directly released into the atmosphere, resulting in both heat waste and environmental pollution. Therefore, modern sintering systems have installed waste heat power generation devices in the annular cooler cooling process. A schematic diagram of a common annular cooler waste heat power generation device is shown below. Figure 4 As shown: The high-temperature flue gas at the head of the annular cooler is sent to the heat exchanger to heat water and generate steam, which can be used to drive equipment or generate electricity;

[0003] Hot sintered ore enters from the head of the annular cooler and is discharged from the tail end after cooling. The hot sintered ore is cooled after passing through the heat exchange section and cooling section inside the annular cooler. The flue gas circulates in a closed system formed by the heat exchange section of the annular cooler, the heat exchange boiler, the flue gas duct, and the circulating fan. The heat from the hot sintered ore is carried into the boiler by the flue gas to heat the steam and water inside the boiler. At the same time, the flue gas cools down. The heat from the hot sintered ore is carried away by the flue gas through heat exchange between the hot ore and the flue gas. The heat from the flue gas heats the steam and water inside the boiler and is carried away by the steam and water. Although the heat exchange system is a closed system, it cannot be completely airtight and there is air leakage in the system. The heat exchange system has natural heat dissipation, which can be reduced by system insulation, but it cannot be completely eliminated.

[0004] Thermal power can quantify the rate at which heat is transferred from sinter to flue gas. The energy in the flue gas will heat the water in the heat extraction boiler, generating steam to drive the turbine to generate electricity. Therefore, obtaining the thermal power in the flue gas can be used to evaluate the power generation of the waste heat power generation device or the insulation performance of the flue gas system. However, there is currently no thermal power measurement scheme for the annular cooler heat extraction system in the existing technology.

[0005] In view of this, it is necessary to propose a heat extraction system for an annular cooler and its heat power measurement method, device, equipment, and storage medium to solve or at least alleviate the above-mentioned defects. Summary of the Invention

[0006] The main objective of this invention is to provide a heat extraction system for an annular cooler and its heat power measurement method, device, equipment, and storage medium, in order to solve the technical problem that there is currently no heat power measurement scheme for annular cooler heat extraction systems in the prior art, and that it is impossible to effectively evaluate the power generation of waste heat power generation devices or the thermal insulation performance of flue gas systems.

[0007] To achieve the above objectives, the present invention provides a ring cooler heat exchange system, comprising a ring cooler heat exchange section, an air hood, a heat exchange boiler, a circulating fan, and flue gas ducts; wherein,

[0008] The air intake hood is connected to the ring cooler frame. The top of the ring cooler heat extraction section and the bottom of the air intake hood are movable and sealed. The heat extraction boiler includes a first air inlet and a first air outlet. The flue gas duct includes a first end and a second end that are arranged opposite to each other along its own extension direction. The circulating fan includes a second air inlet and a second air outlet. The first air inlet is connected to the air intake hood. The first air outlet is connected to the first end. The second end is connected to the second air inlet. The second air outlet is arranged facing the bottom of the ring cooler heat extraction section.

[0009] The air intake hood is equipped with multiple flue gas guide plates, which divide the enclosed space of the air intake hood into multiple independent sub-spaces. Each independent sub-space is equipped with a temperature detection device and a flow detection device.

[0010] The present invention also provides a method for measuring the thermal power of an annular cooler heat extraction system, applied to the aforementioned annular cooler heat extraction system, wherein the thermal power measurement method comprises the following steps:

[0011] S1, Obtain the current thermal power input value entering the air intake shroud;

[0012] S2, obtain the node flue gas thermal power value at the first time node when the preset time period ends;

[0013] S3, determine the difference between the current thermal power input value and the node flue gas thermal power value, and use the difference as the current effective thermal power of the annular cooler heat extraction system.

[0014] Preferably, step S1 specifically includes the following steps:

[0015] S11, using formula Calculate the current thermal power input value of the i-th independent subspace at time k. in, Let be the average flue gas temperature of the i-th independent subspace at time k. Let be the specific heat capacity of the flue gas corresponding to the average temperature of the flue gas in the i-th independent subspace at time k. Let be the flue gas flow rate of the i-th independent subspace at time k;

[0016] S12, using formula Calculate the current thermal power input value P entering the air intake shroud. k ; where n is the total number of independent subspaces.

[0017] Preferably, step S2 specifically includes the following steps:

[0018] Using the formula Py k+l =Ty k+l* Cy k+l* Qy k+l Obtain the node flue gas thermal power value Py at the first time node k+l at the end of the preset duration l when it enters the first end of the flue gas duct. k+l Among them, Ty k+l Cy represents the temperature of the flue gas entering the first end of the flue gas duct at the first time node k+l after the preset duration l ends. k+l Qy represents the specific heat capacity of the flue gas entering the first end of the flue gas duct at the first time node k+l after the preset duration l ends. k+l The flue gas flow rate entering the first end of the flue gas duct at the first time node k+l after the preset duration l ends.

[0019] Preferably, the inner walls of the flue gas guide plate and the air intake hood are welded or integrally formed.

[0020] Preferably, the total number of independent subspaces, n, is set to 10.

[0021] The present invention also provides a heat power measuring device for an annular cooler heat extraction system, comprising:

[0022] The first acquisition unit is used to acquire the current thermal power input value entering the air intake hood;

[0023] The second acquisition unit is used to acquire the node flue gas thermal power value entering the first end of the flue gas duct at the first time node after the preset time period ends.

[0024] The determining unit is used to determine the difference between the current thermal power input value and the node flue gas thermal power value, and to use the difference as the current effective thermal power of the annular cooler heat extraction system.

[0025] The present invention also provides a thermal power measurement device for an annular chiller heat extraction system, including a memory, a processor, and a thermal power measurement program for the annular chiller heat extraction system stored in the memory and executable on the processor. When the processor executes the thermal power measurement program for the annular chiller heat extraction system, it implements the steps of the thermal power measurement method for the annular chiller heat extraction system as described above.

[0026] The present invention also provides a storage medium storing a thermal power measurement program for an annular chiller heat extraction system. When the thermal power measurement program for the annular chiller heat extraction system is executed by a processor, it implements the steps of the thermal power measurement method for the annular chiller heat extraction system as described above.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] This invention provides a heat extraction system for an annular cooler and its heat power measurement method, device, equipment, and storage medium. By acquiring the current heat power input value entering the air intake hood, acquiring the node flue gas heat power value at the first end of the flue gas duct at the first time node after a preset time period, determining the difference between the current heat power input value and the node flue gas heat power value, and using the difference as the current effective heat power of the annular cooler heat extraction system.

[0029] This application streamlines the airflow by dividing the enclosed space of the air intake hood into multiple small spaces. The measured flue gas flow rate and temperature in each independent sub-space can accurately reflect the flue gas flow rate and temperature of the corresponding independent sub-space. The final effective thermal power obtained is calculated by this application to determine the thermal power value transferred from the sinter to the flue gas. The energy in the flue gas will heat the water in the heat extraction boiler to generate steam to drive the turbine to generate electricity. Therefore, obtaining the thermal power in the flue gas can be used to evaluate the power generation of the waste heat power generation device. Since the amount of heat transferred from the sinter to the flue gas is affected by the sealing performance of the annular cooler section of the heat extraction system and the insulation performance of the flue gas system, the current effective thermal power can be used as a criterion for judging the health status of the annular cooler and the insulation performance of the flue gas system. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0031] Figure 1 This is a process flow diagram of a sintering system in the existing technology;

[0032] Figure 2 This is a schematic diagram of sinter formation in existing technology;

[0033] Figure 3 This is a schematic diagram illustrating the working principle of an annular cooler in existing technology.

[0034] Figure 4 This is a schematic diagram of the operation of a waste heat power generation device in the existing technology of annular coolers;

[0035] Figure 5 This is a schematic diagram of a heat extraction system according to an embodiment of the present invention;

[0036] Figure 6 This is a plan view of the contact surface between the air intake shroud and the heat extraction section of the annular cooler in one embodiment of the present invention;

[0037] Figure 7 This is a schematic flowchart of one embodiment of the present invention.

[0038] The objectives, features, and advantages of this invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0039] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0041] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0042] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0043] Those skilled in the art should know that with the rapid development of modern industry, the scale of steel production is increasing, and energy consumption is also increasing. Energy conservation and environmental protection indicators are becoming increasingly important factors to consider in the steel production process. In steel production, iron-containing raw materials need to be processed by a sintering system before entering the blast furnace for smelting. That is, various powdered iron-containing raw materials are mixed with appropriate amounts of fuel (coal powder, coke powder) and flux, and an appropriate amount of water is added. After mixing and pelletizing, they are placed on a sintering trolley for roasting, causing a series of physicochemical changes to form easily smelted sinter. This process is called sintering.

[0044] The sintering system mainly includes several pieces of equipment such as a sintering trolley, a mixer, a main exhaust fan, and an annular cooler. See the sintering system process flow diagram. Figure 1As shown: Various raw materials are proportioned in the batching room to form a mixture. This mixture is then fed into a mixer for homogenization and pelletizing. It is then evenly distributed onto the sintering trolley by a roller feeder and a nine-roller distributor to form a sintering mixture layer. The ignition fan and ignition blower start the ignition furnace, igniting the uppermost layer of the sintering mixture on the sintering trolley. The ignited combustion zone moves downwards, and the mixture passing through it is roasted into sintered ore. This is the sintering process. After sintering, the resulting sintered ore is crushed by a single-roller crusher and cooled by an annular cooler. Finally, it is screened and granulated before being sent to the blast furnace or finished ore bin. The oxygen required for the sintering process is provided by the main exhaust fan. Multiple vertically arranged bellows are located below the sintering trolley, and below the bellows is a horizontally placed large flue (or duct). The large flue is connected to the main exhaust fan, which generates negative pressure air through the large flue and bellows, providing combustion air for the sintering process.

[0045] Please refer to Figure 2 As shown, during the sintering process, the ignited combustion zone moves from top to bottom, and its movement speed is the vertical sintering speed. The sintering trolley moves from the head to the tail of the sintering machine, and its speed is the machine speed. When the combustion zone reaches the bottom of the mixture on the sintering trolley, the position of the sintering trolley relative to the head of the sintering machine marks the sintering endpoint. A schematic diagram of sinter formation is shown below. Figure 2 As shown:

[0046] like Figure 2 As shown, as the sintering trolley moves, the combustion zone gradually moves downward. The mixture passing through the combustion zone is roasted into sintered ore. During the sintering process, the material in the sintering trolley can be divided into the bottom material layer, the original material zone, the wet zone, the drying and preheating zone, the combustion zone, and the sintered ore zone from bottom to top. When the combustion zone moves to the bottom material layer, all the material in the sintering trolley has been roasted into sintered ore. The corresponding position at this time is the sintering endpoint position, which is generally indicated by the bellows number.

[0047] During the sintering process, the temperature of the combustion zone is ~1250℃. The heat generated by fuel combustion continuously accumulates in the mixed material layer below the sintering endpoint. The heat generated by fuel combustion heats the air passing through the sintering machine material layer (i.e., sintering flue gas). Before reaching the sintering endpoint, the flue gas temperature continues to rise. After the sintering endpoint, since there is no fuel available for continued combustion, the air passing through the sintering material layer is a cooling process. At this time, the sintering flue gas temperature begins to drop. Therefore, the sintering endpoint position can be detected by detecting the sintering flue gas temperature in the sintering air box.

[0048] In existing sintering production processes, the sintering endpoint is controlled between the penultimate and fourth-to-last air boxes. Figure 5As shown: Air passes through the sintering material surface, providing oxygen to the fuel in the mixture, forming a continuously and stably descending combustion zone. At the penultimate wind box, the end of the sintering combustion zone reaches the bottom material layer, and the corresponding position is the sintering endpoint.

[0049] In addition, after the sinter is formed, it slides down the tail of the sintering machine, is crushed by a single-roll crusher, and then cooled in a cooling device (commonly an annular cooler or a belt cooler, the cooling mechanism is the same, and the following text uses an annular cooler as an example). The average temperature of the sinter entering the annular cooler is about 700℃. After being cooled to about 150℃ by the annular cooler, it enters the finished product granulation process. The working principle diagram of the annular cooler is shown below. Figure 3 As shown:

[0050] like Figure 3 As shown, after the sinter is cooled, the conveyor belt of the subsequent finished product system can transport the sinter normally. Obviously, under the premise of simply meeting the sintering process requirements, when the average temperature of the sinter entering the annular cooler is low, the cooling air volume required for the cooling process is small, which can reduce the energy consumption of the cooling process. However, the sinter carries a large amount of heat, which is directly released into the atmosphere, resulting in both heat waste and environmental pollution. Therefore, modern sintering systems incorporate waste heat power generation devices in the cooling process. A schematic diagram of a typical existing annular cooler waste heat power generation device is shown below. Figure 4 As shown:

[0051] like Figure 4 As shown, the high-temperature flue gas at the head of the annular cooler is sent to the heat exchanger to heat water and generate steam. The steam can be used to drive equipment or generate electricity. Hot sintered ore enters from the head of the annular cooler and is discharged from the tail of the annular cooler after cooling. The hot sintered ore is cooled after passing through the heat extraction section and cooling section in the annular cooler. The flue gas circulates in a closed system formed by the heat extraction section of the annular cooler, the heat extraction boiler, the flue gas duct, and the circulating fan. The heat of the hot sintered ore is carried into the boiler by the flue gas to heat the steam and water in the boiler. At the same time, the flue gas is cooled down. The heat of the hot sintered ore is carried away by the flue gas through the heat exchange between the hot ore and the flue gas. The heat of the flue gas heats the steam and water in the boiler and is carried away by the steam and water.

[0052] Although a heat extraction system is a closed system, it is impossible for it to be completely airtight; air leakage exists within the system, such as... Figure 4 As shown, the heat extraction system experiences natural heat loss, which can be reduced through system insulation, but cannot be completely eliminated. The heat extraction boiler generates steam to drive a steam turbine to generate electricity. In actual factory applications, the steam can be used for various purposes, such as heating and driving equipment. Figure 4 This diagram illustrates power generation; there can be one or more circulating fans, and the flue gas ducts can be multiple or one, for example... Figure 4 Specifically, it is divided into two independent heat extraction systems, and the effective thermal power of each individual heat extraction system can be obtained according to the method proposed below.

[0053] The boundary between the heat extraction section and the cooling section is the critical temperature range for flue gas utilization. For example, for low-parameter boilers, flue gas below 250℃ has little economic value. Figure 4 The dividing point between the heat extraction section and the cooling section is the flue gas temperature range of 250℃. For ORC power generation or heating applications, the lower limit of the temperature of the heat extraction section can be lowered. The flue gas is heated by the sintered ore, and the temperature of the sintered ore in the corresponding area can be regarded as 20-25℃ higher than the flue gas temperature. The heat taken away by the heat extraction system is the energy production stage, and the self-consumption of electricity by the circulating fan is the energy consumption stage.

[0054] Please see the appendix Figures 1 to 7 An embodiment of the present invention provides a heat exchange system for an annular cooler, comprising a heat exchange section of the annular cooler, an air hood, a heat exchange boiler, a circulating fan, and flue gas ducts; wherein,

[0055] The air intake hood is connected to the ring cooler frame. The top of the ring cooler heat extraction section and the bottom of the air intake hood are movable and sealed. The heat extraction boiler includes a first air inlet and a first air outlet. The flue gas duct includes a first end and a second end that are arranged opposite to each other along its own extension direction. The circulating fan includes a second air inlet and a second air outlet. The first air inlet is connected to the air intake hood. The first air outlet is connected to the first end. The second end is connected to the second air inlet. The second air outlet is arranged facing the bottom of the ring cooler heat extraction section.

[0056] The air intake hood is equipped with multiple flue gas guide plates, which divide the enclosed space of the air intake hood into multiple independent sub-spaces. Each independent sub-space is equipped with a temperature detection device and a flow detection device.

[0057] In this application, a flue gas guide plate is installed inside the air intake hood. The flue gas guide plate divides the enclosed space of the air intake hood into multiple independent small spaces (i.e., multiple independent sub-spaces). The plan view of the contact surface between the air intake hood and the heat extraction section of the annular cooler is shown below. Figure 6 As shown:

[0058] like Figure 6 As shown, the air intakes separated by the flue gas guide plate preferably have the same area at the contact surface of the air intake hood and the same initial area at the outlet surface of the air intake hood, and the independent sub-spaces separated by the flue gas guide plate are airtight with each other in the horizontal direction.

[0059] As a preferred example, the total number of independent subspaces, n, is set to 10. It is worth noting that the number of independent subspaces can be determined based on the actual situation of the corresponding waste heat recovery system. Obviously, more independent subspaces result in more accurate measurements, but also bring a series of problems such as increased installation difficulty and increased weight of the air intake hood. Therefore, as a preferred example, the total number of independent subspaces is set to 10.

[0060] like Figure 6 As shown, flow detection devices QJ11~QJ15, QJ21~QJ25 are respectively installed in the 10 independent sub-spaces separated by the flue gas guide plate; and temperature detection devices TJ11~TJ15, TJ21~TJ25 are respectively installed to detect the flue gas flow rate and flue gas temperature in each independent sub-space.

[0061] This application streamlines the airflow by dividing the enclosed space of the air intake hood into multiple small spaces. The flue gas flow rate in each independent sub-space can accurately reflect the flue gas flow rate in the corresponding independent sub-space. The flue gas temperature in each individual independent sub-space can be considered to be roughly the same. Therefore, the temperature of the corresponding independent sub-space can be obtained through a temperature detection device.

[0062] The present invention also provides a method for measuring the thermal power of an annular cooler heat extraction system, applied to the aforementioned annular cooler heat extraction system, wherein the thermal power measurement method comprises the following steps:

[0063] S1, Obtain the current thermal power input value entering the air intake shroud;

[0064] S2, obtain the node flue gas thermal power value at the first time node when the preset time period ends;

[0065] S3, determine the difference between the current thermal power input value and the node flue gas thermal power value, and use the difference as the current effective thermal power of the annular cooler heat extraction system.

[0066] In a preferred embodiment, step S1 specifically includes the following steps:

[0067] S11, using formula Calculate the current thermal power input value of the i-th independent subspace at time k. Unit: kW; where, Let K be the average flue gas temperature of the i-th independent subspace at time k, in K. Let be the flue gas specific heat capacity corresponding to the average flue gas temperature of the i-th independent subspace at time k, a constant related to temperature, with units of kJ / (Nm³). 3 .K), Let Nm be the flue gas flow rate of the i-th independent subspace at time k. 3 / s;

[0068] S12, using formula Calculate the current thermal power input value P entering the air intake shroud. k , unit: kW; where n is the total number of independent subspaces.

[0069] In a preferred embodiment, step S2 specifically includes the following steps:

[0070] Using the formula Py k+l =Ty k+l* Cy k+l* Qy k+l Obtain the node flue gas thermal power value Py at the first time node k+l at the end of the preset duration l when it enters the first end of the flue gas duct. k+l Unit: kW; where Ty k+l The temperature of the flue gas entering the first end of the flue gas duct at the first time node k+l after the preset duration l can be obtained by setting up a temperature detection device. The unit is K and Cy. k+l The specific heat capacity of the flue gas entering the first end of the flue gas duct at the first time node k+l after the preset duration l ends is a constant related to temperature, with units of kJ / (Nm³). 3 .K), Qyk+l represents the flue gas flow rate entering the first end of the flue gas duct at the first time node k+l after the preset duration l ends. This flow rate can be obtained by setting a flow detection device, and the unit is Nm. 3 / s.

[0071] It is important to note that after the flue gas enters the exhaust hood, it flows through the heat exchange boiler and exchanges heat with it. The flue gas then enters the flue gas duct from the first exhaust port of the heat exchange boiler. The flue gas entering the duct carries away heat. The usable heat in the heat exchange boiler is the difference between the heat carried into the boiler and the heat carried out of the boiler. The flue gas entering the boiler has a residence time from its passage through the boiler to its exit. Since the length of the heat exchange boiler is a fixed constant, this residence time can be considered proportional to the flue gas velocity. In actual production, because the speed adjustment range of the circulating fan is relatively small, this can be considered a constant and obtained through experience or calculation, which will not be elaborated upon here.

[0072] Combining the above formulas, the final functional expression for the current effective heat power of the annular cooler heat extraction system can be obtained as follows: Among them, EP k This represents the current effective thermal power of the annular chiller heat extraction system.

[0073] Preferably, the inner walls of the flue gas guide plate and the air intake hood are welded or integrally formed.

[0074] The present invention also provides a heat power measuring device for an annular cooler heat extraction system, comprising:

[0075] The first acquisition unit is used to acquire the current thermal power input value entering the air intake hood;

[0076] The second acquisition unit is used to acquire the node flue gas thermal power value entering the first end of the flue gas duct at the first time node after the preset time period ends.

[0077] The determining unit is used to determine the difference between the current thermal power input value and the node flue gas thermal power value, and to use the difference as the current effective thermal power of the annular cooler heat extraction system.

[0078] The present invention also provides a thermal power measurement device for an annular chiller heat extraction system, including a memory, a processor, and a thermal power measurement program for the annular chiller heat extraction system stored in the memory and executable on the processor. When the processor executes the thermal power measurement program for the annular chiller heat extraction system, it implements the steps of the thermal power measurement method for the annular chiller heat extraction system as described above.

[0079] The present invention also provides a storage medium storing a thermal power measurement program for an annular chiller heat extraction system. When the thermal power measurement program for the annular chiller heat extraction system is executed by a processor, it implements the steps of the thermal power measurement method for the annular chiller heat extraction system as described above.

[0080] The computer-readable storage medium provided in this application may be, for example, a USB flash drive, but is not limited to, electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices, or any combination thereof. More specific examples of computer-readable storage media may include, but are not limited to: electrical connections having one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof. In this embodiment, the computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, system, or device. The program code contained on the computer-readable storage medium may be transmitted using any suitable medium, including but not limited to: wires, optical cables, RF (Radio Frequency), etc., or any suitable combination thereof.

[0081] The aforementioned computer-readable storage medium may be included in the thermal power measurement device of the annular cooler heat extraction system; or it may exist independently and not be assembled into the thermal power measurement device of the annular cooler heat extraction system.

[0082] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A heat extraction system for an annular cooler, characterized in that, This includes the heat exchange section of the annular cooler, the air hood, the heat exchange boiler, the circulating fan, and the flue gas duct; among which, The air intake hood is connected to the ring cooler frame. The top of the ring cooler heat extraction section and the bottom of the air intake hood are movable and sealed. The heat extraction boiler includes a first air inlet and a first air outlet. The flue gas duct includes a first end and a second end that are arranged opposite to each other along its own extension direction. The circulating fan includes a second air inlet and a second air outlet. The first air inlet is connected to the air intake hood. The first air outlet is connected to the first end. The second end is connected to the second air inlet. The second air outlet is arranged facing the bottom of the ring cooler heat extraction section. The air intake hood is equipped with multiple flue gas guide plates, which divide the enclosed space of the air intake hood into multiple independent sub-spaces. Each independent sub-space is equipped with a temperature detection device and a flow detection device.

2. The annular cooler heat extraction system according to claim 1, characterized in that, The flue gas guide plate and the inner wall of the air intake hood are welded or integrally formed.

3. A method for measuring the thermal power of an annular cooler heat extraction system, applied to the annular cooler heat extraction system as described in any one of claims 1-2, characterized in that, The thermal power measurement method includes the following steps: S1, Obtain the current thermal power input value entering the air intake shroud; S2, obtain the node flue gas thermal power value at the first time node when the preset time period ends; S3, determine the difference between the current thermal power input value and the node flue gas thermal power value, and use the difference as the current effective thermal power of the annular cooler heat extraction system.

4. The method for measuring the thermal power of the annular cooler heat extraction system according to claim 3, characterized in that, Step S1 specifically includes the following steps: S11, using formula Calculate the current thermal power input value of the i-th independent subspace at time k. in, Let be the average flue gas temperature of the i-th independent subspace at time k. Let be the specific heat capacity of the flue gas corresponding to the average temperature of the flue gas in the i-th independent subspace at time k. Let be the flue gas flow rate of the i-th independent subspace at time k; S12, using formula Calculate the current thermal power input value P entering the air intake shroud. k ; where n is the total number of independent subspaces.

5. The method for measuring the thermal power of the annular cooler heat extraction system according to claim 3, characterized in that, Step S2 specifically includes the following steps: Using the formula Py k+l =Ty k+l *Cy k+l *Qy k+l Obtain the node flue gas thermal power value Py at the first time node k+l at the end of the preset duration l when it enters the first end of the flue gas duct. k+l Among them, Ty k+l Cy represents the temperature of the flue gas entering the first end of the flue gas duct at the first time node k+l after the preset duration l ends. k+l Qy represents the specific heat capacity of the flue gas entering the first end of the flue gas duct at the first time node k+l after the preset duration l ends. k+l The flue gas flow rate entering the first end of the flue gas duct at the first time node k+l after the preset duration l ends.

6. The method for measuring the thermal power of the annular cooler heat extraction system according to claim 3, characterized in that, The total number of independent subspaces, n, is set to 10.

7. A heat power measuring device for an annular cooler heat extraction system, characterized in that, include: The first acquisition unit is used to acquire the current thermal power input value entering the air intake hood; The second acquisition unit is used to acquire the node flue gas thermal power value entering the first end of the flue gas duct at the first time node after the preset time period ends. The determining unit is used to determine the difference between the current thermal power input value and the node flue gas thermal power value, and to use the difference as the current effective thermal power of the annular cooler heat extraction system.

8. A heat power measuring device for an annular cooler heat extraction system, characterized in that, The system includes a memory, a processor, and a thermal power measurement program for an annular chiller heat extraction system stored in the memory and executable on the processor. When the processor executes the thermal power measurement program for the annular chiller heat extraction system, it implements the steps of the thermal power measurement method for the annular chiller heat extraction system as described in any one of claims 1 to 6.

9. A storage medium storing a thermal power measurement program for an annular chiller heat extraction system, characterized in that, When the heat power measurement program of the annular chiller heat extraction system is executed by the processor, it implements the steps of the heat power measurement method of the annular chiller heat extraction system as described in any one of claims 1 to 6.

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