Cooling device, tubing, dust collection system, control device, and program

Abstract

Introducing outside air prevents the amount of gas drawn from the furnace from falling below the permissible limit. [Solution] The cooling device is provided in a pipe that sends gas containing foreign matter from a generating unit to a dust collector and includes an outside air intake unit for taking outside air into the pipe, an adjustment unit for adjusting the amount of outside air taken in, a sensing unit for sensing the temperature difference between the upstream and downstream sides of the air intake unit of the gas sent to the dust collector via the pipe, and a control unit that controls the adjustment unit so that the amount of outside air taken in is adjusted based on the sensed temperature difference.

Description

Technical Field

[0001] The technology of the present disclosure relates to a cooling device, a pipe, a dust collection system, a control device, and a program.

Background Art

[0002] Patent Document 1 discloses a processing system provided with a cooling device provided in a pipe between an incinerator that generates gas containing foreign matter and a dust collector that collects the foreign matter from the gas. The cooling device cools the gas to a predetermined temperature. The cooling device includes an outside air introduction pipe that introduces outside air into the inside of the pipe on the upstream side of the dust collector, a damper interposed in the outside air introduction pipe, a gas thermometer that measures the temperature of the gas on the downstream side of the outside air introduction pipe in the pipe, and a control unit that controls the damper based on the temperature of the gas.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, in Patent Document 1, the dust collector is a dust collector that treats gas with a large amount of moisture such as sludge incineration, and the main purpose of introducing outside air is to keep the moisture rate in the gas low without excessively reducing the temperature of the gas.

[0005] In the above processing system, consider introducing outside air to cool high-temperature, temperature-varying gases such as those found in electric furnaces. In such a system, the control unit controls the damper's opening (i.e., fully open / fully closed) based on the gas temperature downstream of the outside air intake pipe in the pipe upstream of the dust collector. Because the damper's opening is controlled in this way, the amount of outside air introduced may exceed the amount needed to cool the gas. Therefore, the amount of gas drawn from the electric furnace decreases (below the allowable value) due to the introduction of outside air.

[0006] The technology disclosed herein aims to provide a cooling device, tubing, dust collection system, control device, and program that can prevent the amount of gas drawn from the furnace by introducing outside air from falling below an acceptable level. [Means for solving the problem]

[0007] To achieve the above objective, a cooling device according to a first aspect of the technology of the present disclosure includes, provided in a transfer unit for sending gas containing foreign matter from a generating unit to a dust collector, an outside air intake unit for taking outside air into the transfer unit, an adjustment unit for adjusting the amount of outside air taken in, a sensing unit for sensing the temperature difference between the upstream and downstream sides of the air intake unit of the gas sent to the dust collector via the transfer unit, and a control unit for controlling the adjustment unit so that the amount of outside air taken in is adjusted based on the sensed temperature difference.

[0008] A second embodiment is a pipe for sending gas containing foreign matter from a generating unit to a dust collector, wherein the pipe is provided with an outside air intake unit for taking outside air into the pipe and an adjustment unit for adjusting the amount of outside air taken in, the temperature difference between the upstream and downstream sides of the gas intake unit is grasped by a grasping unit, and the adjustment unit is controlled by a grasping control unit so as to adjust the amount of outside air taken in based on the grasped temperature difference.

[0009] The dust collection system of the third embodiment comprises the pipe of the second embodiment and the dust collector.

[0010] The control device of the fourth embodiment includes a control unit that controls the adjustment unit so that outside air is taken into the transfer unit by an outside air intake unit provided in the transfer unit for sending gas containing foreign matter from a generating unit to a dust collector, the amount of outside air taken in is adjusted by an adjustment unit, the temperature difference between the upstream and downstream sides of the air intake unit of the gas sent to the dust collector via the transfer unit is grasped by a grasping unit, and the amount of outside air taken in is adjusted based on the grasped temperature difference.

[0011] The fifth aspect is a program stored in a storage medium that causes a computer to function as a control unit according to the fourth aspect. [Effects of the Invention]

[0012] One aspect of the technology of this disclosure adjusts the amount of outside air taken in based on the temperature difference between the upstream and downstream sides of the air intake section of the gas sent from the generation section to the dust collector via the transfer section. This makes it possible to adjust the amount of outside air taken in to an appropriate level and prevents the amount of gas drawn from the generation section from falling below the permissible amount due to taking in more outside air than necessary into the transfer section. [Brief explanation of the drawing]

[0013] [Figure 1] Figure 1 is a schematic diagram showing an example of a cooling device according to an embodiment. [Figure 2] Figure 2 is a block diagram showing an example of the electrical system of the cooling device according to the embodiment. [Figure 3] Figure 3 shows an example of the processing of each functional part of the processor in the cooling device of the embodiment. [Figure 4A] Figure 4A is a flowchart showing an example of a part of the damper opening control program executed by the processor of the cooling device in the embodiment. [Figure 4B] Figure 4B is a flowchart showing the remaining example of a damper opening control program executed by the processor of the cooling device in the embodiment. [Modes for carrying out the invention]

[0014] Embodiments of the technology of this disclosure will be described below with reference to the drawings.

[0015] [Embodiment] (composition) The configuration of the cooling device 100 of this embodiment will now be described. Figure 1 shows an example of the cooling device 100 of this embodiment. The cooling device 100 is installed between an electric furnace 53 that generates gas containing foreign matter and a dust collector 55 that collects the foreign matter from the gas. The electric furnace 53 and the dust collector 55 are connected by pipes 52, 54, 60, and 64 for sending the gas from the electric furnace 53 to the dust collector 55. An incinerator may be used instead of the electric furnace 53. The dust collector 55 is equipped with a filter cloth for collecting foreign matter from the gas.

[0016] Cooling device 100 is an example of a "cooling device" in the present disclosure. Electric furnace 53 is an example of a "generation unit" in the present disclosure. Dust collector 55 is an example of a "dust collector" in the present disclosure. Pipes 52, 54, 60, 64, and 63 are examples of a "transfer unit" in the present disclosure.

[0017] One end of pipe 52 is connected to the electric furnace 53, and the other end of pipe 52 is connected to a water-cooled or air-cooled gas cooler 50 for cooling the gas. The gas cooler 50 is located upstream of the gas from pipe 22 of the outside air intake adjustment unit 20, which will be described later. One end of pipe 54 is connected to the gas cooler 50, and the other end of pipe 54 is connected to a fan 58. One end of pipe 60 is connected to a fan 58, and the other end of pipe 60 is connected to a connection part 62. One end of pipe 63, which is separate from pipes 52, 54, 60, and 64, is connected to the connection part 62 for sending a gas different from the gas from the electric furnace 53 to the dust collector 55. The other end of pipe 63 is connected to a gas generating unit (not shown) separate from the dust collector 55. One end of pipe 64 is connected to the connection part 62, and the other end of pipe 64 is connected to the dust collector 55.

[0018] The dust collection system composed of pipes 52, 54, 60, 64, 63 and the dust collector 55 is an example of the "dust collection system" of the technology of the present disclosure. The gas cooler 50 is an example of the "cooling section" of the technology of the present disclosure.

[0019] Instead of the gas cooler 50, a combustion tower, an air-cooled duct, or a water-cooled duct may be provided.

[0020] A fan 58 is provided between the pipe 54 and the pipe 60. A fan (not shown) is also provided in the dust collector 55. The fan 58 provided between the pipe 54 and the pipe 60 and the fan of the dust collector 55 send the gas from the electric furnace 53 to the dust collector 55 through the pipes 52, 54, 60, 64. The fan of the dust collector 55 sends the gas from the other gas generation section through the pipes 63, 64 to the dust collector 55. Note that the fan 58 may not be provided.

[0021] The cooling device 100 is provided in the pipe 54 for sending the gas from the electric furnace 53 to the dust collector 55, and at least one, specifically, a plurality, more specifically, two outside air intake adjustment sections 20 for taking in outside air into the inside of the pipe 54 are provided. The outside air intake adjustment section 20 may be provided singly or in a plurality of three or more. Since the two outside air intake adjustment sections 20 have the same configuration, only one of the outside air intake adjustment sections 20 will be described and the description of the other outside air intake adjustment sections 20 will be omitted.

[0022] The outside air intake adjustment section 20 includes a pipe 22 having one end opened to the outside and the other end opened to the pipe 54, a damper 24 provided inside the pipe 22 for adjusting the diameter of the pipe 22, and a damper opening drive section 26 for adjusting the opening degree of the damper 24. The damper opening drive section 26 adjusts the intake amount of outside air introduced into the inside of the pipe 66 through the pipe 22 by adjusting the tilt angle of the damper 24 between the horizontal direction and the vertical direction.

[0023] The pipe 22 is an example of the "outside air intake section" of the technology of the present disclosure. The damper 24 and the damper opening drive section 26 are examples of the "adjustment section" of the technology of the present disclosure.

[0024] The cooling device 100 includes a first upstream temperature sensor 12 that detects the gas temperature at a first upstream position B upstream of the pipe 22, and a second upstream temperature sensor 14 that detects the gas temperature at a second upstream position A further upstream of the first upstream position B. The first upstream position B is upstream of the pipe 22 and downstream of the cascoula 50. The second upstream position A is upstream of the cascoula 50 and downstream of the electric furnace 53.

[0025] The cooling device 100 includes a first downstream temperature sensor 16 that detects the gas temperature at a first downstream position C downstream of the pipe 22, and a second downstream temperature sensor 18 that detects the gas temperature at a second downstream position D further downstream of the first downstream position C. The first downstream position C is a position downstream of the pipe 22 and upstream of the connection 62. The second downstream position D is the location of the connection 62.

[0026] Figure 2 is a block diagram showing an example of a cooling device 100 according to the embodiment. As shown in Figure 2, the cooling device 100 includes a control device 10 that grasps the temperature difference between the upstream and downstream sides of the gas outside air intake adjustment unit 20 and controls the damper opening drive unit 26 so that the amount of outside air taken in is adjusted based on the grasped temperature difference.

[0027] The control unit 10 is comprised of a computer. The control unit 10 includes a processor 32, NMV (Non-volatile memory) 36, RAM (Random Access Memory) 34, and input / output (I / O) ports 38. The processor 32, NMV 36, RAM 34, and input / output (I / O) ports 38 are connected to each other via a bus 40 so that they can communicate with one another.

[0028] The input / output (I / O) port 38 is connected to a second downstream temperature sensor 18, a first downstream temperature sensor 16, a damper opening drive unit 26, a first upstream temperature sensor 12, and a second upstream temperature sensor 14.

[0029] The processor 32 is a processing unit that includes a DSP (Digital Signal Processor), a CPU (Central Processing Unit), and a GPU (Graphics Processing Unit). The DSP and GPU operate under the control of the CPU and are responsible for executing the damper opening control process. Here, a processing unit including a DSP, CPU, and GPU is given as an example of the processor 32, but this is only an example. The processor 32 may be one or more CPUs and DSPs with integrated GPU functionality, or one or more CPUs and DSPs without integrated GPU functionality, or it may be equipped with a TPU (Tensor Processing Unit).

[0030] NVM36 is a non-volatile memory device. Examples of NVM36 include flash memory (e.g., EEPROM (Electrically Erasable and Programmable Read Only Memory)). NVM36 stores the damper opening control processing program 36P, the previous opening degree ZKA36A and the previous temperature taa36B, which will be described in detail later.

[0031] The damper opening degree control processing program 36P is an example of a “program” in the technology of this disclosure.

[0032] RAM34 is memory that temporarily stores information and is used as work memory by the processor 32. Examples of RAM34 include DRAM (Dynamic Random Access Memory) or SRAM (Static Random Access Memory).

[0033] The functional units of the processor 32 include an input unit 32A, a calculation unit 32B, a judgment unit 32C, a setting unit 32D, a reading unit 32E, and an adjustment control unit 32F. The processor 32 reads the damper opening control processing program 36P from the NVM 36 and performs damper opening control processing by executing the read damper opening control processing program 36P on the RAM 34. The processor 32 operates as the input unit 32A, calculation unit 32B, judgment unit 32C, setting unit 32D, reading unit 32E, and adjustment control unit 32F according to the damper opening control processing program 36P executed on the RAM 34.

[0034] Figure 3 shows an example of the processing of each functional part of the processor in the cooling device of the embodiment.

[0035] The intake unit 32A takes in the temperature td of the second downstream position D, the temperature tc of the first downstream position C, the temperature tb of the first upstream position B, and the temperature ta of the second upstream position A.

[0036] The calculation unit 32B calculates the temperature TC at the first downstream position C from the set temperature and temperature td at the second downstream position D, so that the temperature of the gas passing through the first downstream position C becomes the allowable temperature T of the dust collector 55 when it is introduced into the dust collector 55.

[0037] The calculation unit 32B calculates the difference Δtbc (=tb-tc) between the temperature tb on the upstream side and the temperature tc on the downstream side of the gas pipe 22 that is sent to the dust collector 55 via pipes 52, 54, 60, and 64.

[0038] The calculation unit 32B calculates the opening degree KA such that the difference Δtbc becomes the target ΔtbC (=tb-TC).

[0039] The reading unit 32E reads the previous temperature taa36B from the NMV36, the calculation unit 32B calculates the difference Δta (=ta - taa), and the determination unit 32C determines whether the difference Δta > 0.

[0040] If the difference Δta > 0, the reading unit 32E reads the previous opening degree ZKA 36A from the NMV 36, the calculation unit 32B calculates the difference ΔKA (= ZKA - KA), and the determination unit 32C determines whether the difference ΔKA > 0 or not. If the difference ΔKA > 0, the setting unit 32D sets KA ← ZKA.

[0041] The adjustment control unit 32F controls the drive unit so that the damper opening degree becomes KA.

[0042] The setting unit 32D sets ZKA←KA and taa←ta.

[0043] The determination unit 32C determines whether or not the damper control process has finished.

[0044] (action) Next, the operation of this embodiment will be described. Figures 4A and 4B are flowcharts showing an example of a damper opening control program executed by the processor 32 of the cooling device 100 of this embodiment. When the damper opening control program is executed, the damper opening control process and the damper opening control process method are executed. The damper opening control program starts when a start button (not shown) is operated.

[0045] In step 108, the intake unit 32A takes in the temperature td of the second downstream position D. The second downstream position D is the location of the connection unit 62, where gas from the electric furnace 53 and gas from a gas generation unit (not shown), separate from the electric furnace 53, are supplied.

[0046] In step 110, the calculation unit 32B calculates the temperature TC of the first downstream position C using feedback control (for example, PID control (Proportional-Integral-Differential Control)) from the set temperature of the second downstream position D and the temperature td of the second downstream position D. The temperature TC of the first downstream position C is the temperature of the first downstream position C such that the temperature of the gas passing through the first downstream position C reaches the allowable temperature T of the dust collector 55 when it is introduced into the dust collector 55. In this embodiment, the PID control for calculating the temperature TC of the first downstream position C is cascade control. The manipulated variable of the PID control (i.e., cascade control) is the set temperature of position C. The set temperature of position C changes depending on the difference between the set temperature of the second downstream position D and the temperature td (measured value) of the second downstream position D. The set temperature of the second downstream position D is predetermined by the heat resistance temperature of the filter cloth of the dust collector 55. The heat resistance temperature of the filter cloth for the dust collector 55 varies depending on the type of filter cloth.

[0047] In step 112, the intake unit 32A takes in the temperature tc of the first downstream position C.

[0048] In step 114, the intake unit 32A takes in the temperature tb of the first upstream position B on the upstream side.

[0049] In step 114, the intake unit 32A may take in the temperature ta at position A upstream of the gas cooler 50 instead of the temperature tb. However, using temperature tb is preferable because it takes in the temperature after it has been cooled by the gas cooler 50, compared to using temperature ta.

[0050] In step 116, the calculation unit 32B calculates the temperature difference Δtbc (=tb-tc) between the first upstream position B and the first downstream position C.

[0051] The calculation unit 32B is an example of a "grasping unit" in the technology of this disclosure.

[0052] In step 118, the calculation unit 32B calculates the opening degree KA using feedback control (e.g., PID control) so that the temperature difference Δtbc between the first upstream position B and the first downstream position C becomes the target ΔTbC (=tb-TC). If the target ΔTbC is negative, KA = 0. The opening degree KA is the opening degree of the damper 24 of each outside air intake adjustment unit 20. This improves the responsiveness of adjusting the opening degree KA to the rise in temperature tb at the first upstream position B.

[0053] The target ΔtbC (=tb-TC) is an example of a "target value" for the technology described herein.

[0054] In this embodiment, the opening degree KA is calculated assuming a constant ambient temperature (for example, 23°C), but the technology of this disclosure is not limited thereto. For example, if the ambient temperature is not constant, an ambient temperature detection sensor may be further provided, and the calculation unit 32B may further take into account the ambient temperature detected by the ambient temperature detection sensor when calculating the opening degree KA.

[0055] In step 120, the intake unit 32A takes in the temperature ta of position A upstream of the gas cooler 50.

[0056] In step 122, the reading unit 32E reads the previous temperature taa36B from the NMV36. In step 124, the calculation unit 32B calculates the difference Δta (=ta - taa) between the current temperature ta and the previous temperature taa. In step 126, the determination unit 32C determines whether the difference Δta > 0.

[0057] A difference of Δta > 0 means that the temperature ta at position A upstream of the gas cooler 50, where the gas was taken in this time, is higher than the temperature taa at the previous time. In other words, it means that the temperature of the gas from the electric furnace 53 has risen since the last time.

[0058] If it is determined that the difference Δta > 0, the damper opening control process proceeds to step 136. If it is determined that the difference Δta > 0, the damper opening control process proceeds to step 128.

[0059] In step 128, the reading unit 32E reads the previous opening degree ZKA. In step 130, the calculation unit 32B calculates the difference ΔKA (=ZKA-KA).

[0060] In step 126, the determination unit 32C determines whether the difference ΔKA > 0.

[0061] A difference of ΔKA > 0 means that the previous opening degree ZKA was greater than the opening degree KA calculated this time. Specifically, this means that although the temperature of the gas from the electric furnace 53 has risen since the last time, the current opening degree KA is smaller than the previous opening degree ZKA, resulting in a smaller amount of outside air intake. This means that the gas cooler 50 may not be able to cool the gas sufficiently, and ultimately, gas at a temperature higher than the allowable temperature T may be introduced into the dust collector 55.

[0062] In step 134, the setting unit 32D sets KA←ZKA. This prevents the current opening degree KA from being smaller than the previous opening degree ZKA, and prevents gas that cannot be cooled sufficiently by the gas cooler 50 and is above the allowable temperature T from being introduced into the dust collector 55.

[0063] In step 136, the adjustment control unit 32F controls the damper opening drive unit 26 so that the damper opening becomes KA.

[0064] The adjustment control unit 32F is an example of a "control unit" in the technology of this disclosure.

[0065] In step 138, the setting unit 32D sets ZKA←KA and taa←ta. That is, the current opening degree KA is set as the previous opening degree ZKA, and the current temperature ta is set as the previous temperature taa, and these are stored in the NMV36. As a result, when this damper opening degree control process is executed again, the current KA will be used as ZKA, and the current ta will be used as the previous temperature taa.

[0066] In step 138, the determination unit 32C determines whether the damper control process has ended by determining whether an exit button or the like (not shown) has been operated.

[0067] If it is determined that the damper control process is not yet complete, the damper control process returns to step 102 and executes the above processes (steps 102 to 140).

[0068] If it is determined that the damper control process is complete, the damper control process will terminate.

[0069] (effect) In this embodiment, the amount of outside air taken in is adjusted not only based on the temperature on the downstream side of the pipe 22 of the gas sent to the dust collector 55 via the pipe from the electric furnace 53, but also based on the temperature difference between the upstream and downstream sides of the pipe 22. Therefore, compared to the on / off control of the conventional technology, only the necessary amount of air can be taken in, and it is possible to prevent the amount of gas suction from decreasing (falling below the allowable value).

[0070] Incidentally, while the dust collector 55 draws in a constant amount of gas, if introducing outside air causes the amount of gas drawn from the electric furnace to fall below the permissible limit, the amount of gas supplied to the dust collector can be increased to maintain the gas supply to the electric furnace. However, this requires more power (power to drive the fan, etc.), which is uneconomical, meaning energy is wasted. In this embodiment, it is possible to prevent the amount of gas supplied to the dust collector 55 from falling below the permissible limit due to drawing in more outside air than necessary into the pipe, thus contributing to energy conservation.

[0071] However, even with a gas cooler 50, if the temperature of the gas from the electric furnace 53 rises instantaneously, the cooling by the gas cooler 50 may not be sufficient to cool the gas introduced into the dust collector 55 to a temperature that will not cause the dust collector 55 to malfunction. However, in this embodiment, the temperature upstream of the gas from the gas cooler 50 is further monitored, and the amount of outside air taken in is adjusted accordingly. This allows the amount of outside air taken in to respond more quickly to changes in the temperature of the gas from the electric furnace 53. Therefore, even if the temperature of the gas from the electric furnace 53 rises instantaneously, it is possible to prevent the gas introduced into the dust collector 55 from reaching a temperature that would cause the dust collector 55 to malfunction.

[0072] In this embodiment, the calculation unit 32B calculates the opening degree KA using feedback control so that the temperature difference Δtbc between the first upstream position B and the first downstream position C becomes the target ΔTbC, and the adjustment control unit 32F controls the damper opening drive unit 26 so that the damper opening degree becomes KA. In this embodiment, since the damper opening drive unit 26 is controlled so that the temperature difference Δtbc becomes the target ΔTbC, only the necessary amount of air can be taken in, and a decrease in the gas suction amount (below the allowable value) can be prevented more accurately.

[0073] Furthermore, in this embodiment, the amount of outside air taken in can be adjusted based on the difference between the temperature upstream of the pipe 22 and the temperature downstream of the gas connection part 62. Therefore, even if another pipe is connected to the pipe connection part 62 to send gas from a different generating unit than the electric furnace 53 to the dust collector 55, and gas from another generating unit is sent to the dust collector 55, the amount of outside air taken in can be set to an appropriate amount, preventing the amount of gas sent to the dust collector 55 from falling below the permissible amount.

[0074] Furthermore, in this embodiment, the temperature upstream of the connection section 62 and downstream of the outside air intake section is determined so that the temperature of the gas introduced into the dust collector 55 is below the permissible temperature range, and the amount of outside air taken in is adjusted based on the difference between the determined temperature and the temperature upstream of the gas pipe 22. Therefore, since the temperature downstream of the outside air intake section is determined more precisely, the amount of outside air taken in can be made more appropriate, and it is possible to better prevent the amount of gas supplied to the dust collector 55 from falling below the permissible amount.

[0075] Furthermore, in this embodiment, if the ambient temperature is not constant as described above, the amount of ambient air taken in is adjusted based on the temperature difference between the upstream and downstream sides of the pipe 22 and the temperature of the ambient air taken into the pipe. This allows the amount of ambient air taken in to be adjusted to a more appropriate amount by taking the ambient temperature into account, and prevents the amount of gas sent to the dust collector 55 from falling below the permissible amount due to taking in more ambient air than necessary.

[0076] Furthermore, in this embodiment, since the cooling system includes a cooling device 100, and the pipes 52, 54, 60, 63, 64 used in the cooling device 100, and the control device 10 are provided, this embodiment can provide a pipe, a dust collection system, and a control device that can prevent the amount of gas drawn from the electric furnace 53 from falling below an allowable value due to taking in more outside air than necessary into the pipe.

[0077] [Differentiation] The following describes variations of this embodiment. Since the configuration of each variation is substantially the same as that of the embodiment described above, only the differences will be described.

[0078] (First variation) In the embodiment described above, the temperature td of the second downstream position D is acquired from the second downstream temperature sensor 18. The temperature tc of the first downstream position C is acquired from the first downstream temperature sensor 16. The temperature tb of the first upstream position B is acquired from the first upstream temperature sensor 12. The temperature ta of the second upstream position A is acquired from the second upstream temperature sensor 14. The technology of this disclosure is not limited thereto. Each temperature may be determined using a trained model.

[0079] For example, a trained model for estimating the temperature td at the second downstream position D is a trained model that has been trained using multiple sets of data, each partially different, consisting of the distance between the second downstream position D and the electric furnace 53, the distance between the second downstream position D and another generating unit, the temperature of the gas from the electric furnace 53, the temperature of the gas from the other generating unit, and the lengths of the pipes 52, 54, 60, 62, and 64.

[0080] Therefore, when the distance between the second downstream position D of the cooling device 100 of this embodiment and the electric furnace 53, the distance between the second downstream position D and another generating unit, the temperature of the gas from the electric furnace 53, the temperature of the gas from the other generating unit, and the lengths of the pipes 52, 54, 60, 62, and 64 are input to the trained model, the temperature td of the second downstream position D is output from the trained model.

[0081] This is a trained model that has learned using the distance between the second downstream position D and the electric furnace 53, the distance between the second downstream position D and another generation unit, the temperature of the gas from the electric furnace 53, the temperature of the gas from the other generation unit, and the lengths of pipes 52, 54, 60, 62, and 64 as training data.

[0082] Furthermore, a pre-trained model that outputs the difference between the temperature tc at the first downstream position C and the temperature tb at the first upstream position B may be used.

[0083] The trained models for estimating other temperatures are also trained using the same training data as the trained model for estimating the temperature td at the second downstream location D.

[0084] Thus, in this first modified example, by using a trained model, the second downstream temperature sensor 18, the first downstream temperature sensor 16, the first upstream temperature sensor 12, and the second upstream temperature sensor 14 can be omitted, reducing the number of components in the cooling device and simplifying the configuration of the cooling device.

[0085] (Second variation) In the embodiment described above, outside air is taken into the interior of the pipe 54 from the outside air intake adjustment unit 20. The technology of this disclosure is not limited to this. For example, water may be sprayed into the interior of the pipe 54 (inside the other end of the pipe 22) along with or instead of taking in outside air.

[0086] By spraying water, the gas can be cooled more quickly.

[0087] (Third variation) In the embodiment described above, the opening degree of each damper is controlled, but the technology of this disclosure is not limited thereto, and the opening degree of each damper may be limited to fully open or fully closed, and the number of dampers that are fully open may be controlled. [Note] Based on the above disclosures, the following addendum is proposed. (Note 1) A transfer unit is provided for sending gas containing foreign matter from a generating unit to a dust collector, and an outside air intake unit is provided for taking outside air into the transfer unit, An adjustment unit for adjusting the amount of outside air taken in, A sensing unit that grasps the temperature difference between the upstream and downstream sides of the air intake unit of the gas sent to the dust collector via the transfer unit, A control unit controls the adjustment unit so that the amount of outside air taken in is adjusted based on the temperature difference that has been determined, A cooling device equipped with the following features. (Note 2) The transfer unit is provided with a cooling unit for cooling the gas upstream of the outside air intake unit. The grasping unit further grasps the temperature of the gas upstream of the cooling unit as the temperature of the gas upstream of the air intake unit. The cooling device described in Appendix 1. (Note 3) The control unit controls the adjustment unit so that the detected temperature difference becomes a target value. The cooling device described in Appendix 1 or Appendix 2. (Note 4) A separate transfer unit is connected to the transfer unit at the connection point downstream of the outside air intake unit from the gas, for sending a gas different from the gas from the generation unit to the dust collector. The temperature of the gas downstream of the air intake is the temperature of the gas at the connection point. The cooling device described in Appendix 3. (Note 5) The control unit, Based on the temperature of the gas at the connection point, the temperature upstream of the connection point and downstream of the outside air intake point is determined such that the temperature of the gas introduced into the dust collector is below the permissible temperature range. The adjustment unit is controlled so that the amount of outside air taken in is adjusted based on the predetermined temperature, the temperature upstream of the gas intake unit, and the difference between the measured temperature and the temperature. The cooling device described in Appendix 4. (Note 6) The control unit further determines the temperature of the outside air taken into the transfer unit and controls the adjustment unit so that the amount of outside air taken in is adjusted based on the difference and the temperature of the outside air. A cooling device as described in any one of the items in Appendix 1 to Appendix 5. (Note 7) A pipe for sending gas containing foreign matter from a generating unit to a dust collector, The aforementioned pipe includes, An outside air intake section for taking outside air into the pipe, An adjustment unit for adjusting the amount of outside air taken in, A system was established, The temperature difference between the upstream and downstream sides of the air intake section of the aforementioned gas is detected by the sensing unit. The adjustment unit is controlled by the sensing control unit so that the amount of outside air taken in is adjusted based on the temperature difference that has been grasped. tube. (Note 8) The pipes described in Appendix 7, The aforementioned dust collector and, A dust collection system equipped with the following features. (Note 9) Outside air is drawn into the interior of the transfer unit, which is provided in the transfer unit that sends the gas containing foreign matter from the generating unit to the dust collector. The amount of outside air taken in is adjusted by the adjustment unit. The temperature difference between the upstream and downstream sides of the air intake section of the gas sent to the dust collector via the transfer section is grasped by the grasping section. A control device comprising a control unit that controls the adjustment unit so that the amount of outside air taken in is adjusted based on the temperature difference that has been determined. (Note 10) A program stored on a storage medium that causes the computer to function as the control unit described in Appendix 9. [Explanation of symbols]

[0088] 10 Control device 12. First upstream temperature sensor 14. Second upstream temperature sensor 16. First downstream temperature sensor 18. Second downstream temperature sensor 20. Outside air intake adjustment unit 22 tubes 24 Damper 26 Damper opening drive unit 50 Gas Cooler 52, 54, 60, 64 tube 53 Incinerator 55 Dust collector 58 Fans 62 Connection part 100 Cooling device

Claims

1. A transfer unit is provided for sending gas containing foreign matter from a generating unit to a dust collector, and an outside air intake unit is provided for taking outside air into the transfer unit, An adjustment unit for adjusting the amount of outside air taken in, A sensing unit that grasps the temperature difference between the upstream and downstream sides of the air intake unit of the gas sent to the dust collector via the transfer unit, A control unit controls the adjustment unit so that the amount of outside air taken in is adjusted based on the temperature difference that has been determined, A cooling device equipped with the following features.

2. The transfer unit is provided with a cooling unit for cooling the gas upstream of the outside air intake unit. The grasping unit further grasps the temperature of the gas upstream of the cooling unit as the temperature of the gas upstream of the air intake unit. The cooling device according to claim 1.

3. The control unit controls the adjustment unit so that the detected temperature difference becomes a target value. A cooling device according to claim 1 or claim 2.

4. A separate transfer unit is connected to the transfer unit at the connection point downstream of the outside air intake unit from the gas, for sending a gas different from the gas from the generation unit to the dust collector. The temperature of the gas downstream of the air intake is the temperature of the gas at the connection point. The cooling device according to claim 3.

5. The control unit, Based on the temperature of the gas at the connection point, the temperature upstream of the connection point and downstream of the outside air intake point is determined such that the temperature of the gas introduced into the dust collector is below the permissible temperature range. The adjustment unit is controlled so that the amount of outside air taken in is adjusted based on the predetermined temperature, the temperature upstream of the gas intake unit, and the difference between the measured temperature and the temperature. The cooling device according to claim 4.

6. The control unit further determines the temperature of the outside air taken into the transfer unit and controls the adjustment unit so that the amount of outside air taken in is adjusted based on the difference and the temperature of the outside air. The cooling device according to claim 1.

7. A transfer unit for sending gas containing foreign matter from a generating unit to a dust collector, The transfer unit includes: An outside air intake unit for taking outside air into the transfer unit, An adjustment unit for adjusting the amount of outside air taken in, A system was established, The temperature difference between the upstream and downstream sides of the air intake section of the aforementioned gas is detected by the sensing unit. The adjustment unit is controlled by the sensing control unit so that the amount of outside air taken in is adjusted based on the temperature difference that has been grasped. Transfer department.

8. The transfer unit according to claim 7, The aforementioned dust collector and, A dust collection system equipped with the following features.

9. Outside air is drawn into the interior of the transfer unit, which is provided in the transfer unit that sends the gas containing foreign matter from the generating unit to the dust collector. The amount of outside air taken in is adjusted by the adjustment unit. The temperature difference between the upstream and downstream sides of the air intake section of the gas sent to the dust collector via the transfer section is grasped by the grasping section. A control device comprising a control unit that controls the adjustment unit so that the amount of outside air taken in is adjusted based on the temperature difference that has been determined.

10. A program stored in a storage medium that causes a computer to function as the control unit described in claim 9.

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