Combustion-supporting pressure-stabilizing control system of hot blast stove

Abstract

The utility model provides a hot-blast stove combustion-supporting pressure-stabilizing control system, and belongs to the technical field of hot-blast stoves. The combustion-supporting pressure-stabilizing control system of the hot blast stove comprises a fan module, a frequency conversion control module, a temperature detection module, a pressure detection module and a main control module, the fan module is respectively connected with the frequency conversion control module and the main control module; the temperature detection module and the pressure detection module are connected with the main control module; the fan module is configured to change the running state according to an instruction of the frequency conversion control module; the frequency conversion control module is configured to control the running state of the fan module according to an instruction of the main control module; the temperature detection module is configured to collect temperature data in the hot-blast stove, and the pressure detection module is configured to collect pressure data in the hot-blast stove; the main control module is configured to control the working state of the frequency conversion control module according to the temperature data and the pressure data. The frequency conversion control module can be controlled to adjust the frequency according to temperature and pressure changes, energy consumption is reduced, and the service life of the hot blast stove is prolonged.

Description

Technical Field

[0001] The present disclosure relates to the technical field of hot blast stoves, and in particular to a hot blast stove combustion-supporting and pressure-stabilizing control system. Background Art

[0002] Hot air furnace is a kind of equipment used to generate and provide high-temperature hot air, which is usually used in drying, heating, heat preservation and other processes. They can use different energy sources to heat moisture or air to produce dry hot air, and are widely used in industrial production, construction industry, agricultural drying and other fields. The heat transfer efficiency of the hot air furnace depends on its control system. Traditional hot air furnace control systems often use a single adjustment method, resulting in low production efficiency, high energy consumption, and cannot maintain the stable operation of the hot air furnace well. Utility Model Content

[0003] The disclosed embodiment provides a hot blast stove combustion-supporting and pressure-stabilizing control system to solve the problems of low production efficiency and high energy consumption of the hot blast stove.

[0004] In a first aspect, an embodiment of the present disclosure provides a hot blast stove combustion-supporting and pressure-stabilizing control system, comprising:

[0005] Fan module, frequency conversion control module, temperature detection module, pressure detection module and main control module;

[0006] The fan module is connected to the frequency conversion control module and the main control module respectively; the temperature detection module and the pressure detection module are both connected to the main control module;

[0007] The fan module is configured to change the operating state according to the instruction of the frequency conversion control module;

[0008] The frequency conversion control module is configured to control the operating state of the fan module according to the instruction of the main control module;

[0009] The temperature detection module is configured to collect temperature data in the hot blast stove, and the pressure detection module is configured to collect pressure data in the hot blast stove;

[0010] The main control module is configured to control the working state of the frequency conversion control module according to the temperature data and the pressure data.

[0011] In an exemplary embodiment of the present disclosure, the temperature detection module includes:

[0012] A first temperature detection unit, a second temperature detection unit, and a third temperature detection unit;

[0013] The first temperature detection unit, the second temperature detection unit, and the third temperature detection unit are all connected to the main control module;

[0014] The first temperature detection unit is configured to collect temperature data of the hot air outlet of the hot blast stove; the second temperature detection unit is configured to collect temperature data of the combustion chamber of the hot blast stove; the third temperature detection unit is configured to collect temperature data in the furnace of the hot blast stove;

[0015] The main control module is configured to start the third temperature detection unit when detecting that the temperature data sent by the second temperature detection unit is abnormal.

[0016] In an exemplary embodiment of the present disclosure, the hot blast stove combustion-supporting and pressure-stabilizing control system further includes:

[0017] Gas detection module;

[0018] The gas detection module is connected to the main control module;

[0019] The gas detection module is configured to collect gas content data in the hot blast stove.

[0020] In an exemplary embodiment of the present disclosure, the fan module comprises:

[0021] a first fan and a second fan;

[0022] The frequency conversion control module is connected to the first fan and the second fan respectively, and the first fan and the second fan are both connected to the main control module;

[0023] The first fan is arranged at the air supply port of the hot blast stove and is configured to deliver air into the hot blast stove; the second fan is arranged at the hot blast outlet of the hot blast stove and is configured to discharge the waste gas in the hot blast stove.

[0024] In an exemplary embodiment of the present disclosure, the frequency conversion control module includes:

[0025] Frequency converter;

[0026] The input end of the frequency converter is connected to the main control module, the first output end of the frequency converter is connected to the first fan, and the second output end of the frequency converter is connected to the second fan;

[0027] The frequency converter is configured to control the operating states of the first fan and the second fan according to instructions from the main control module.

[0028] In an exemplary embodiment of the present disclosure, the hot blast stove combustion-supporting and pressure-stabilizing control system further includes:

[0029] Wireless communication module and wired communication module;

[0030] The fan module is connected to the frequency conversion control module via a wired communication module; the temperature detection module and the pressure detection module are both connected to the main control module via a wireless communication module.

[0031] In an exemplary embodiment of the present disclosure, the hot blast stove combustion-supporting and pressure-stabilizing control system further includes:

[0032] Handheld terminal;

[0033] The handheld terminal is connected to the frequency conversion control module.

[0034] In an exemplary embodiment of the present disclosure, the hot blast stove combustion-supporting and pressure-stabilizing control system further includes:

[0035] Early warning module;

[0036] The early warning module is connected to the main control module.

[0037] In an exemplary embodiment of the present disclosure, the hot blast stove combustion-supporting and pressure-stabilizing control system further includes:

[0038] Temperature acquisition circuit;

[0039] The temperature acquisition circuit includes a temperature acquisition unit and a signal amplification unit;

[0040] The temperature acquisition unit is configured to acquire temperature data in the hot blast stove, and the signal amplification unit is configured to amplify the signal sent by the temperature acquisition unit.

[0041] The beneficial effects of a hot blast stove combustion-supporting and pressure-stabilizing control system provided by the embodiment of the present disclosure are:

[0042] On the one hand, through the linkage between the fan module and the frequency conversion control module, the system can respond to the instructions of the main control module in real time and finely adjust the operating status of the fan module. This dynamic adjustment capability ensures that the hot air furnace can maintain a stable combustion-supporting effect under different working conditions, thereby improving the combustion efficiency of the hot air furnace and preventing power waste.

[0043] On the other hand, the present invention can accurately control the working state of the frequency conversion control module according to the temperature data and the pressure data, which helps to avoid the occurrence of adverse working conditions such as overheating and overpressure, and prolong the service life of the hot air furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0045] Figure 1 It is a structural schematic diagram of a hot blast stove combustion-supporting and pressure-stabilizing control system provided by an embodiment of the present disclosure;

[0046] Figure 2 is a structural schematic diagram of a hot blast stove combustion-supporting and pressure-stabilizing control system provided by another embodiment of the present disclosure;

[0047] Figure 3 is a circuit diagram of a temperature acquisition circuit provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0048] In order to enable people in the technical field to better understand the present solution, the technical solution in the embodiment of the present solution will be clearly described below in conjunction with the drawings in the embodiment of the present solution. Obviously, the described embodiment is an embodiment of a part of the present solution, not all of the embodiments. Based on the embodiments in the present solution, all other embodiments obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present solution.

[0049] The term "including" and any other variations in the specification and claims of this solution and the above drawings mean "including but not limited to", and is intended to cover non-exclusive inclusions and is not limited to the examples listed in the text. In addition, the terms "first" and "second" are used to distinguish different objects, not to describe a specific order.

[0050] The following is a detailed description of the implementation of the present disclosure in conjunction with the specific drawings:

[0051] Figure 1 This is a schematic diagram of the structure of a hot blast stove combustion-supporting and pressure-stabilizing control system provided by the embodiment of the present disclosure. Figure 1 The hot blast furnace combustion-supporting and pressure-stabilizing control system includes:

[0052] Fan module 11, frequency conversion control module 12, temperature detection module 13, pressure detection module 14 and main control module 15;

[0053] The fan module 11 is connected to the frequency conversion control module 12 and the main control module 15 respectively; the temperature detection module 13 and the pressure detection module 14 are both connected to the main control module 15;

[0054] The fan module 11 is configured to change the operating state according to the instruction of the frequency conversion control module 12;

[0055] The frequency conversion control module 12 is configured to control the operating state of the fan module 11 according to the instructions of the main control module 15;

[0056] The temperature detection module 13 is configured to collect temperature data in the hot blast furnace, and the pressure detection module 14 is configured to collect pressure data in the hot blast furnace;

[0057] The main control module 15 is configured to control the working state of the frequency conversion control module 12 according to the temperature data and the pressure data. Main control module 15 Temperature detection module 13 Pressure detection module 14 Frequency conversion control module 12

[0058] In this embodiment, the fan module 11 is responsible for controlling the air flow in the hot blast furnace to adjust the amount of air required for the combustion process. According to the instructions of the frequency conversion control module 12, the fan module 11 can change its operating state, such as adjusting the speed, so as to change the amount of air sent into the hot blast furnace to adapt to different combustion requirements.

[0059] The frequency conversion control module 12 can receive the instruction of the main control module 15, and control the operation state of the fan module 11 according to the instruction. Through the frequency conversion technology, the module can realize the precise control of the fan speed, thereby realizing the precise regulation of the air flow inside the hot air furnace.

[0060] The temperature detection module 13 can monitor the temperature data in the hot blast stove in real time to ensure that the combustion process is carried out within a safe temperature range, and avoid long-term high-temperature operation to damage the grate and furnace wall of the hot blast stove, reduce its service life, and even cause safety accidents. The temperature detection module 13 can include a temperature sensor, a temperature acquisition circuit, a filter circuit, etc. Through these devices, the temperature detection module 13 can accurately collect the temperature information in the hot blast stove and send this information to the main control module 15 for analysis and processing.

[0061] The pressure detection module 14 can monitor the pressure changes in the hot blast furnace in real time to ensure that the hot blast furnace operates within a safe pressure range. Once the pressure exceeds or falls below the preset safety threshold, the system can immediately issue an alarm to avoid possible safety accidents such as explosions or furnace ruptures. By monitoring the pressure changes in the hot blast furnace in real time, the changes in gas flow during the combustion process can be understood. Appropriate pressure helps to ensure sufficient mixing of fuel and air, improve combustion efficiency, and reduce energy consumption and pollutant emissions. The pressure detection module 14 can send the collected data to the main control module 15 for analysis and processing.

[0062] The main control module 15 is the core component of the entire control system, which can receive the data sent by the temperature acquisition module and the pressure acquisition module, and analyze and process the data. The main control module 15 stores preset algorithms and logics, and can judge whether the current operation status of the hot blast furnace is normal according to the data sent by the temperature acquisition module and the pressure acquisition module. If the operation status of the hot blast furnace is abnormal, an instruction can be sent to the frequency conversion control module 12 to adjust the operation status of the fan module 11, such as reducing or increasing the speed of the fan, etc., to achieve precise control of the combustion-supporting and voltage-stabilizing of the hot blast furnace.

[0063] In this embodiment, the temperature detection module 13 and the pressure detection module 14 can collect the temperature data and pressure data in the hot blast furnace in real time, and continuously send these data to the main control module 15. After receiving these data, the main control module 15 will immediately analyze and process them to determine whether the current operating state of the hot blast furnace is stable and whether adjustments are needed. Once the main control module 15 finds that the temperature or pressure deviates from the preset safety range, it will send a control instruction to the frequency conversion control module 12. The frequency conversion control module 12 accurately controls the speed and operating state of the fan module 11 according to the received instructions, thereby adjusting the air flow in the hot blast furnace and realizing accurate control of temperature and pressure.

[0064] From the above, it can be concluded that, first, through the linkage between the fan module 11 and the frequency conversion control module 12, the system can respond to the instructions of the main control module 15 in real time and finely adjust the operating state of the fan module 11. This dynamic adjustment capability ensures that the hot blast furnace can maintain a stable combustion-supporting effect under different working conditions, thereby improving the combustion efficiency of the hot blast furnace.

[0065] Second, the temperature detection module 13 and the pressure detection module 14 can collect the temperature and pressure data in the hot blast furnace in real time, and provide an accurate data source for the main control module 15. Based on these data, the main control module 15 can accurately control the working state of the frequency conversion control module 12, thereby realizing accurate control of the temperature and pressure of the hot blast furnace. This helps to avoid the occurrence of adverse working conditions such as overheating and overpressure, and prolong the service life of the hot blast furnace.

[0066] Third, by precisely controlling the operating state of the fan module 11, the system can reduce unnecessary energy consumption and achieve energy-saving effects.

[0067] In one embodiment of the present disclosure, reference Figure 2 , the temperature detection module 13 includes:

[0068] A first temperature detection unit 301, a second temperature detection unit 302, and a third temperature detection unit 303;

[0069] The first temperature detection unit 301, the second temperature detection unit 302, and the third temperature detection unit 303 are all connected to the main control module 15;

[0070] The first temperature detection unit 301 is configured to collect temperature data of the hot air outlet of the hot blast stove; the second temperature detection unit 302 is configured to collect temperature data of the combustion chamber of the hot blast stove; the third temperature detection unit 303 is configured to collect temperature data in the furnace of the hot blast stove;

[0071] The main control module 15 is configured to start the third temperature detection unit 303 when detecting that the temperature data sent by the second temperature detection unit 302 is abnormal.

[0072] In this embodiment, the first temperature detection unit 301 is arranged at the hot air outlet of the hot air stove, and is used to collect the temperature data of the hot air outlet in real time. These temperature data help the main control module 15 to determine whether the hot air output of the hot air stove is stable, and whether it is necessary to adjust the operating state of the fan module 11 to ensure that the output temperature meets the requirements.

[0073] The second temperature detection unit 302 is arranged in the combustion chamber of the hot blast stove, and is used to monitor the temperature of the combustion chamber. The temperature of the combustion chamber is an important indicator reflecting the combustion state of the hot blast stove. Once the temperature of the combustion chamber is abnormal, such as too high or too low, it may affect the operating efficiency and safety of the hot blast stove. Therefore, when the second temperature detection unit 302 detects that the temperature data is abnormal, the main control module 15 will immediately start the countermeasures.

[0074] The third temperature detection unit 303 is arranged in the furnace of the hot blast stove to further confirm the temperature condition in the furnace. Generally, the third temperature detection unit 303 is in sleep mode to save energy and extend the life of the equipment. When the main control module 15 analyzes that the temperature data sent by the second temperature detection unit 302 is abnormal, the third temperature detection unit 303 will be started to obtain the real-time temperature data in the furnace, so as to more accurately judge the operation status of the hot blast stove and make corresponding adjustments.

[0075] It can be concluded from the above that by configuring the first temperature detection unit 301, the second temperature detection unit 302, and the third temperature detection unit 303 to respectively detect the temperature data of different key areas (hot air outlet, combustion chamber, and furnace) of the hot blast stove, it is possible to achieve comprehensive monitoring of the operation status of the hot blast stove. In particular, the third temperature detection unit 303 is usually in a dormant state, and is started after receiving the instruction sent by the main control module 15, thereby saving energy consumption and quickly locating abnormal problem areas, thereby improving the reliability of the system.

[0076] In one embodiment of the present disclosure, reference Figure 2 The hot blast furnace combustion-supporting and pressure-stabilizing control system also includes:

[0077] Gas detection module 16;

[0078] The gas detection module 16 is connected to the main control module 15;

[0079] The gas detection module 16 is configured to collect gas content data in the hot blast stove.

[0080] In this embodiment, the gas detection module 16 can be arranged at the outlet of the hot blast stove to collect the gas content data in the hot blast stove in real time. The types of gas can be oxygen, carbon monoxide, carbon dioxide, nitrogen oxides, etc. After the gas detection module 16 collects the gas content data, it sends the data to the main control module 15. The main control module 15 optimizes the air-fuel ratio according to the gas content data and pressure data, so as to judge the working state of the hot blast stove.

[0081] In this embodiment, if the oxygen concentration is detected to be low, it may mean that the combustion is incomplete, and it is necessary to increase the fuel supply or adjust the speed of the fan to improve the combustion efficiency. Conversely, if the carbon monoxide or nitrogen oxide concentration is detected to be too high, it may mean that there is a problem in the combustion process, and it is necessary to reduce the fuel supply or lower the combustion temperature to reduce the generation of pollutants.

[0082] In this embodiment, the basic calculation formula of the air-fuel ratio is: air-fuel ratio = fuel mass / air mass (oxygen volume). The main control module 15 can dynamically control the working state of the fan module 11 according to the oxygen concentration detected by the gas detection module 16 and the pressure data in the hot air stove detected by the pressure detection module 14, thereby indirectly optimizing the air-fuel ratio so that the hot air stove can achieve the best combustion efficiency to maintain the stability of the combustion process.

[0083] It can be concluded from the above that the gas detection module 16 can collect the gas content data in the hot blast stove in real time and send it to the main control module 15 for analysis and processing. The main control module 15 can dynamically adjust the operating state and combustion parameters of the fan according to the gas content data and pressure data, thereby optimizing the air-fuel ratio and greatly improving the combustion efficiency and safety of the hot blast stove.

[0084] In one embodiment of the present disclosure, reference Figure 2 , the fan module 11 includes:

[0085] A first fan 101 and a second fan 102;

[0086] The frequency conversion control module 12 is connected to the first fan 101 and the second fan 102 respectively, and the first fan 101 and the second fan 102 are both connected to the main control module 15;

[0087] The first fan 101 is disposed at the air supply port of the hot blast stove and is configured to deliver air into the hot blast stove; the second fan 102 is disposed at the hot blast outlet of the hot blast stove and is configured to discharge waste gas in the hot blast stove.

[0088] In this embodiment, the fan module 11 includes a first fan 101 and a second fan 102, and the first fan 101 and the second fan 102 are both connected to the main control module 15. The main control module 15 can adjust the operating status of the first fan 101 and the second fan 102 through the frequency conversion control module 12 according to the temperature data, the pressure data and the gas detection data.

[0089] The first fan 101 is arranged at the air outlet of the hot blast stove, and its main function is to deliver air into the hot blast stove. When the hot blast stove needs to start working or increase the combustion efficiency, the main control module 15 will send a command to the frequency conversion control module 12, thereby controlling the first fan 101 to start or increase the speed, so as to deliver more air into the hot blast stove and provide sufficient oxygen for combustion.

[0090] The second fan 102 is arranged at the hot air outlet of the hot blast furnace, and its main function is to discharge the waste gas in the hot blast furnace. As the combustion proceeds, waste gas will be generated in the hot blast furnace, and these waste gases need to be discharged in time to ensure the cleanliness of the environment in the hot blast furnace and the continuous combustion. The main control module 15 will adjust the speed of the second fan 102 through the frequency conversion control module 12 according to the generation of waste gas in the hot blast furnace to ensure that the waste gas can be effectively discharged.

[0091] It can be concluded from the above that the fan module 11 realizes the transportation of air in the hot blast stove and the discharge of exhaust gas through the coordinated work of the first fan 101 and the second fan 102, thereby ensuring the stable operation and efficient combustion of the hot blast stove.

[0092] In one embodiment of the present disclosure, reference Figure 2 , the frequency conversion control module 12 includes:

[0093] Frequency converter 201;

[0094] The input end of the frequency converter 201 is connected to the main control module 15, the first output end of the frequency converter 201 is connected to the first fan 101, and the second output end of the frequency converter 201 is connected to the second fan 102;

[0095] The frequency converter 201 is configured to control the operating states of the first fan 101 and the second fan 102 according to the instruction of the main control module 15 .

[0096] In this embodiment, the frequency conversion control module 12 is mainly composed of a frequency converter 201, and the input end of the frequency converter 201 is connected to the main control module 15, and can receive and execute the instructions sent by the main control module 15. The frequency converter 201 has two output ends, which can control two different devices at the same time. Among them, the first output end is connected to the first fan 101, and the second output end is connected to the second fan 102. The frequency converter 201 can control the first fan 101 or the second fan 102 separately according to the instructions of the control module. For example, when the main control module 15 determines that the combustion is insufficient, it sends an instruction to the frequency converter 201 to increase the speed of the first fan 101 so that there is sufficient oxygen in the hot blast furnace to participate in the combustion. When the main control module 15 determines that the hot blast furnace needs to reduce the combustion efficiency or enter the standby state, it sends an instruction to the frequency converter 201 to reduce the speed of the first fan 101 and the second fan 102 or stop them.

[0097] It can be concluded from the above that the frequency converter 201 is connected to the main control module 15 so that the system can realize accurate control of the operating status of the first fan 101 and the second fan 102. This control method can adjust the fan speed in real time according to the actual needs of the hot blast stove, thereby optimizing the combustion efficiency and exhaust gas emission effect. In addition, the frequency converter 201 can also effectively reduce the mechanical impact of the fan during the start-up and stop process, extend the service life of the fan, and reduce maintenance costs. The entire system therefore achieves higher operating efficiency and lower energy consumption, providing a strong guarantee for the stable operation of the hot blast stove.

[0098] In one embodiment of the present disclosure, reference Figure 2 , the hot blast furnace combustion-supporting and pressure-stabilizing control system also includes:

[0099] A wireless communication module 17 and a wired communication module 18;

[0100] The fan module 11 is connected to the frequency conversion control module 12 and the main control module 15 via the wired communication module 18 ; the temperature detection module 13 and the pressure detection module 14 are both connected to the main control module 15 via the wireless communication module 17 .

[0101] In this embodiment, the wireless communication module 17 and the wired communication module 18 provide a communication bridge for each module in the system. The fan module 11 is connected to the frequency conversion control module 12 and the main control module 15 through the wired communication module 18 to ensure the stability and real-time performance of data transmission. When the main control module 15 needs to adjust the operating state of the fan, it will quickly and accurately send the instruction to the frequency conversion control module 12 through the wired communication module 18, thereby controlling the speed of the fan.

[0102] At the same time, because the temperature detection module 13 and the pressure detection module 14 are arranged inside the hot blast furnace, they can communicate with the main control module 15 through the wireless communication module 17. This wireless transmission method allows the sensor to be flexibly arranged at different positions in the hot blast furnace without being bound by cables. The sensor detects the temperature and pressure data in the hot blast furnace in real time, and sends the data to the main control module 15 through the wireless communication module 17, providing accurate data support for the control of the system.

[0103] It can be concluded from the above that this hybrid communication mode not only improves the flexibility and scalability of the system, but also reduces the complexity and cost of system maintenance, providing a strong guarantee for the safe and efficient operation of the hot blast furnace.

[0104] In one embodiment of the present disclosure, reference Figure 2 , the hot blast furnace combustion-supporting and pressure-stabilizing control system also includes:

[0105] Handheld terminal 19;

[0106] The handheld terminal 19 is connected to the frequency conversion control module 12 .

[0107] In this embodiment, the handheld terminal 19 is a portable control device, such as a smart phone, a remote control, etc., which can be connected to the frequency conversion control module 12 by wireless communication, so that it can easily send instructions to the frequency conversion control module 12, thereby controlling the operation status of the first fan 101 and the second fan 102. The handheld terminal 19 can also be used to record historical data, generate operation reports, etc., and provide data support for the maintenance and management of the hot air furnace.

[0108] It can be concluded from the above that the setting of the handheld terminal 19 greatly improves the operational flexibility and convenience of the system. The handheld terminal 19 allows the operator to monitor and control the operating status of the hot air furnace anytime and anywhere, and adjust the fan speed, temperature and other parameters in real time to ensure the stable operation of the hot air furnace. In addition, the handheld terminal 19 also has data storage and transmission functions, which provides convenience for data analysis and troubleshooting. This innovative design not only improves work efficiency, but also enhances the safety and reliability of the system.

[0109] In one embodiment of the present disclosure, reference Figure 2 , the hot blast furnace combustion-supporting and pressure-stabilizing control system also includes:

[0110] Early warning module 20;

[0111] The early warning module 20 is connected to the main control module 15 .

[0112] In this embodiment, when the main control module 15 determines that the data collected by the temperature detection module 13, the pressure detection module 14 or the gas detection module 16 exceeds the preset safety threshold, it will send a warning signal to the warning module 20, and the warning module 20 will immediately activate the warning mechanism.

[0113] It can be concluded from the above that the early warning module 20 can timely detect and handle abnormal conditions in the operation of the hot blast furnace, effectively avoid potential safety hazards, and ensure the safe and stable operation of the system. Through real-time monitoring and early warning, the early warning module 20 can detect equipment failures or abnormal conditions in advance, so as to carry out repairs and maintenance in time, reduce the failure rate, and extend the service life of the equipment.

[0114] In one embodiment of the present disclosure, reference Figure 3 , the hot blast furnace combustion-supporting and pressure-stabilizing control system also includes:

[0115] Temperature acquisition circuit;

[0116] The temperature acquisition circuit includes a temperature acquisition unit 100 and a signal amplification unit 200;

[0117] The temperature acquisition unit 100 is configured to acquire temperature data in the hot blast furnace, and the signal amplification unit 200 is configured to amplify the signal sent by the temperature acquisition unit 100. The output end of the temperature acquisition circuit is connected to the temperature detection module 13.

[0118] In this embodiment, the temperature acquisition circuit is connected to the temperature detection module 13 to collect temperature data in the hot blast furnace. The diode D1 is connected to the resistor R1, and the diode D2 is connected to the resistor R2. One end of the thermistor RT1 is connected to the resistor R1 and the resistor R3, and the other end is grounded; one end of the sliding rheostat RP1 is connected to the resistor R2 and the resistor R4, and the other end is grounded. The capacitor C1 and the resistor R5 are connected in parallel. The in-phase input terminal of the operational amplifier is connected to the resistor R4, the reverse input terminal is connected to the resistor R3, the output terminal is connected to the diode D3, and the cathode of the diode D3 is connected to the temperature detection module 13. The resistor R6 and the sliding rheostat RP2 are connected in series and connected to the output terminal and the reverse input terminal of the operational amplifier.

[0119] In this embodiment, the diodes D1, D2 and D3 are used to prevent the circuit from being damaged by reverse connection. The temperature acquisition unit 100 can convert the temperature data into an electrical signal, and the signal amplification unit 200 can amplify the signal for subsequent analysis and processing.

[0120] The above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. A hot blast stove combustion-supporting and pressure-stabilizing control system, characterized in that: include: Fan module, frequency conversion control module, temperature detection module, pressure detection module and main control module; The fan module is connected to the frequency conversion control module and the main control module respectively; the temperature detection module and the pressure detection module are both connected to the main control module; The fan module is configured to change the operating state according to the instruction of the frequency conversion control module; The frequency conversion control module is configured to control the operating state of the fan module according to the instruction of the main control module; The temperature detection module is configured to collect temperature data in the hot blast stove, and the pressure detection module is configured to collect pressure data in the hot blast stove; The main control module is configured to control the working state of the frequency conversion control module according to the temperature data and the pressure data.

2. The hot blast stove combustion-supporting and pressure-stabilizing control system according to claim 1, characterized in that: The temperature detection module comprises: A first temperature detection unit, a second temperature detection unit, and a third temperature detection unit; The first temperature detection unit, the second temperature detection unit, and the third temperature detection unit are all connected to the main control module; The first temperature detection unit is configured to collect temperature data of the hot air outlet of the hot blast stove; the second temperature detection unit is configured to collect temperature data of the combustion chamber of the hot blast stove; the third temperature detection unit is configured to collect temperature data in the furnace of the hot blast stove; The main control module is configured to start the third temperature detection unit when detecting that the temperature data sent by the second temperature detection unit is abnormal.

3. The hot blast stove combustion-supporting and pressure-stabilizing control system according to claim 1, characterized in that: Also includes: Gas detection module; The gas detection module is connected to the main control module; The gas detection module is configured to collect gas content data in the hot blast stove.

4. The hot blast stove combustion-supporting and pressure-stabilizing control system according to claim 1, characterized in that: The fan module comprises: a first fan and a second fan; The frequency conversion control module is connected to the first fan and the second fan respectively, and the first fan and the second fan are both connected to the main control module; The first fan is arranged at the air supply port of the hot blast stove and is configured to deliver air into the hot blast stove; the second fan is arranged at the hot blast outlet of the hot blast stove and is configured to discharge the waste gas in the hot blast stove.

5. The hot blast stove combustion-supporting and pressure-stabilizing control system according to claim 4, characterized in that: The frequency conversion control module comprises: Frequency converter; The input end of the frequency converter is connected to the main control module, the first output end of the frequency converter is connected to the first fan, and the second output end of the frequency converter is connected to the second fan; The frequency converter is configured to control the operating states of the first fan and the second fan according to instructions from the main control module.

6. The hot blast stove combustion-supporting and pressure-stabilizing control system according to claim 1, characterized in that: Also includes: Wireless communication module and wired communication module; The fan module is connected to the frequency conversion control module via a wired communication module; the temperature detection module and the pressure detection module are both connected to the main control module via a wireless communication module.

7. The hot blast stove combustion-supporting and pressure-stabilizing control system according to claim 1, characterized in that: Also includes: Handheld terminal; The handheld terminal is connected to the frequency conversion control module.

8. The hot blast stove combustion-supporting and pressure-stabilizing control system according to claim 1, characterized in that: Also includes: Early warning module; The early warning module is connected to the main control module.

9. The hot blast stove combustion-supporting and pressure-stabilizing control system according to claim 1, characterized in that: Also includes: Temperature acquisition circuit; The temperature acquisition circuit includes a temperature acquisition unit and a signal amplification unit; The temperature acquisition unit is configured to acquire temperature data in the hot blast stove, and the signal amplification unit is configured to amplify the signal sent by the temperature acquisition unit.

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