Energy-saving control system of flue gas dust removal fan

Abstract

The utility model discloses an energy-saving control system for a flue gas dust removal fan. The flue gas fan dust removal control system comprises a first TSP sampler and a second TSP sampler which are arranged at a tap hole and a tank position and used for monitoring TSP values of the tap hole and the tank position; the first particulate matter sensor and the second particulate matter sensor are arranged at an inlet of the dust remover and a discharge outlet of the chimney and used for collecting the particulate matter content of the inlet of the dust remover and the particulate matter content of the discharge outlet of the chimney; the pressure sensor is arranged at the outlet of the dust remover and used for collecting the pressure of the outlet of the dust remover; the air door is arranged at an inlet of the dust removal fan; and the terminal is connected with the dust remover, the dust removal fan, the TSP sampler, the particulate matter sensor, the pressure sensor and the air door. According to the hardware architecture provided by the invention, the limitation that an existing dust removal fan energy-saving optimization control system can only adjust the fan speed according to the smoke gas flow speed is changed, and meanwhile, the situation that only a single environment factor needs to be considered when the dust removal fan is adjusted can be avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fan control, in particular to an energy-saving control system for a flue gas dedusting fan. BACKGROUND

[0002] In flue gas treatment, a fan is a power device for overcoming the resistance of flue gas treatment equipment to maintain the flow of flue gas, and it converts electrical energy into mechanical energy, which is a driven fluid machine. With the increase in the number of flue gas emission indicators and the gradual decrease in the indicators, the number of devices in series in the flue gas treatment process increases, the resistance of the entire system increases, the power of the fan motor increases, and the power consumption increases. Therefore, the energy consumption cost of the fan accounts for a considerable proportion of the environmental protection expenditure cost in each industry. According to incomplete statistics, the cost of electricity accounts for 10% of the production cost of a steel enterprise, and the electricity cost of the fan accounts for about 70% of the cost of electricity.

[0003] At present, most fans are equipped with adjustable devices, such as centrifugal fans equipped with an alternating current variable frequency speed regulation device and a fluid coupling device to control the speed of the fan, an axial flow fan with adjustable static blades equipped with an alternating current variable frequency speed regulation device, and an axial flow fan with adjustable dynamic blades with adjustment function.

[0004] In order to realize the adjustment and control of the fan, there are currently control systems for the fan. For example, a dust removal fan energy-saving optimization control system is disclosed in Chinese patent document CN202082127U, which includes a dust removal fan automatic data acquisition and processing device, a dust removal fan speed dynamic optimization controller, an alternating current variable frequency speed regulation device or a fluid coupling device speed regulation device, a dust removal fan motor, and a dust removal pipeline flue gas flow rate detection device. In this control system, the flow rate information is detected in real time by the dust removal pipeline flue gas flow rate detection device and fed back to the dust removal fan speed dynamic optimization controller, and then the dust removal fan speed dynamic optimization controller determines the speed set value of the alternating current variable frequency speed regulation device or the fluid coupling device speed regulation device according to the control parameters of the dust removal fan automatic data acquisition and processing device and the flow rate information of the dust removal pipeline flue gas flow rate detection device. Then, the alternating current variable frequency speed regulation device or the fluid coupling device speed regulation device adjusts the speed of the dust removal fan motor, thereby achieving the purpose of energy saving.

[0005] However, the inventors realize that based on the hardware architecture provided by the dust removal fan energy-saving optimization control system, when adjusting the speed of the dust removal fan motor, only the speed of the dust removal fan motor can be set according to the flow rate information collected by the dust removal pipeline flue gas flow rate detection device, i.e. only the speed of the dust removal fan can be adjusted according to the flow rate of the dust removal pipeline flue gas flow rate detection device.

[0006] For the dust removal fan, the fan speed should be determined according to the environmental requirements, and then the fan speed determines the flow rate of the flue gas in the dust removal pipeline. Obviously, it is illogical to determine the fan speed according to the flow rate of the flue gas in the dust removal pipeline by using the hardware architecture of the dust removal fan energy-saving optimization control system, and it is a logical inversion; based on the hardware architecture of the dust removal fan energy-saving optimization control system, the fan speed cannot be adjusted from multiple environmental requirements, which will lead to the lag and inaccuracy of the fan adjustment, and cannot realize the real energy-saving optimization of the dust removal fan. Invention content

[0007] Therefore, the present application provides a flue gas dust removal fan energy-saving control system to solve the technical problem that the hardware architecture of the existing dust removal fan control system can only realize dust removal fan speed adjustment according to the flow rate of the flue gas.

[0008] In order to achieve the above purpose, the present application provides the following technical scheme:

[0009] A flue gas dust removal fan energy-saving control system is arranged in a blast furnace casthouse environment dust removal system, the blast furnace casthouse environment dust removal system comprises a dust collector connected with a tapping hole and a ladle position at an inlet, an outlet of the dust collector is connected with an inlet of a dust removal fan, and an outlet of the dust removal fan is connected with a chimney; the flue gas dust removal fan energy-saving control system comprises:

[0010] A first TSP sampler is arranged at the tapping hole and used for monitoring the TSP value of the tapping hole;

[0011] A second TSP sampler is arranged at the ladle position and used for monitoring the TSP value of the ladle position;

[0012] A first particulate matter sensor is arranged at the inlet of the dust collector and used for collecting the particulate matter content of the inlet of the dust collector;

[0013] A second particulate matter sensor is arranged at the discharge port of the chimney and used for collecting the particulate matter content of the discharge port of the chimney;

[0014] A pressure sensor is arranged at the outlet of the dust collector and used for collecting the pressure of the outlet of the dust collector;

[0015] A damper is arranged at the inlet of the dust removal fan;

[0016] A terminal is connected with the dust collector, the dust removal fan, the first TSP sampler, the second TSP sampler, the first particulate matter sensor, the second particulate matter sensor, the pressure sensor and the damper.

[0017] Optionally, the flue gas dust removal fan energy-saving control system further comprises:

[0018] The first camera is arranged at the taphole and is used for collecting images of the taphole gun and the opening machine;

[0019] The second camera is arranged at the ladle station and is used for collecting images of the ladle station;

[0020] The terminal is connected with the first camera and the second camera.

[0021] Optionally, the dust removal fan is a centrifugal fan or an axial flow fan.

[0022] Optionally, the terminal comprises a processor, a communication module and a human-computer interaction component, the communication module and the human-computer interaction component are connected with the processor, and the communication module is used for establishing a communication connection with the dust collector, the dust removal fan, the first TSP sampler, the second TSP sampler, the first particulate matter sensor, the second particulate matter sensor, the pressure sensor and the air door.

[0023] Further optionally, the terminal further comprises an alarm module, and the alarm module is connected with the processor.

[0024] Further optionally, the alarm module is an audible and visual alarm.

[0025] Compared with the prior art, the application has at least the following beneficial effects:

[0026] The embodiment of the application provides a new hardware architecture of a flue gas dedusting fan energy-saving control system, a first TSP sampler is arranged at a tapping hole of a blast furnace environment dedusting system, a second TSP sampler is arranged at a ladle position, a first particulate matter sensor is arranged at an inlet of a deduster, a second particulate matter sensor is arranged at a chimney discharge port, a pressure sensor is arranged at an outlet of the deduster, and a damper is arranged at an inlet of a dedusting fan, and connections are established between a terminal and the deduster, the dedusting fan, the first TSP sampler, the second TSP sampler, the first particulate matter sensor, the second particulate matter sensor, the pressure sensor and the damper, so that in the process of blast furnace ironmaking, the terminal can monitor a plurality of values such as a TSP1 value of the tapping hole environment, a TSP2 value of the ladle position environment, dust content at the inlet of the deduster, dust content at the environmental protection discharge port, pressure at the outlet of the deduster, deduster purging period and time, and dedusting fan real-time operation parameters, so that when a worker wants to adjust the dedusting fan rotating speed and the dedusting fan inlet damper opening degree, the TSP1 value of the tapping hole environment, the TSP2 value of the ladle position environment, the dust content at the inlet of the deduster, the dust content at the environmental protection discharge port and the pressure at the outlet of the deduster can be considered simultaneously, and the deduster purging period and time and the fan operation parameters can also be considered, so that the dedusting fan rotating speed and the dedusting fan inlet damper opening degree that can make the plurality of environmental factors meet the conditions and are more suitable for the current blast furnace ironmaking working environment are obtained, and the updated dedusting fan rotating speed and dedusting fan inlet damper opening degree are sent to the dedusting fan and the damper through the terminal, so that the adjustment of the dedusting fan is realized. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more intuitively illustrate the prior art and the present application, exemplary drawings are given below. It should be understood that the specific shapes, structures shown in the drawings should not be considered as limiting conditions in the implementation of the present application; for example, based on the technical concepts disclosed in the present application and the exemplary drawings, those skilled in the art can easily make routine adjustments or further optimizations to the increase / decrease / assignment of certain units (components), specific shapes, positional relationships, connection methods, size ratio relationships, etc.

[0028] Figure 1 A setting scene schematic diagram of a flue dust removal fan energy-saving control system provided for an embodiment of the present application is shown in the figure.

[0029] Figure 2 A connection relationship schematic diagram of a flue dust removal fan energy-saving control system provided for an embodiment of the present application is shown in the figure.

[0030] Figure 3 A further detailed connection relationship schematic diagram of a flue dust removal fan energy-saving control system provided for an embodiment of the present application is shown in the figure.

[0031] Figure 4 A component module schematic diagram of a terminal in an embodiment of the present application is shown in the figure.

[0032] Legend of reference signs:

[0033] 1, taphole; 2, ladle position; 3, dust collector; 4, dust removal fan; 5, chimney; 6, first TSP sampler; 7, second TSP sampler; 8, first particulate matter sensor; 9, second particulate matter sensor; 10, pressure sensor; 11, damper; 12, terminal; 121, processor; 122, communication module; 123, human-computer interaction component; 124, alarm module; 13, first camera; 14, second camera. DETAILED DESCRIPTION

[0034] The present application will be further described in detail below with reference to the accompanying drawings.

[0035] In the description of the present application: unless otherwise specified, the meaning of "multiple" is two or more. The terms "first", "second", "third", etc. in the present application are intended to distinguish the objects referred to, and do not have a special meaning in the technical connotation aspect (for example, it should not be understood as an emphasis on importance or order, etc.). The expressions "include", "contain", "have" and the like also mean "not limited to" (certain units, components, materials, steps, etc.).

[0036] The terms such as "upper", "lower", "left", "right", "middle" and the like referred to in the present application are generally indications of the relative positional relationship for the purpose of intuitive understanding with reference to the drawings, and are not absolute limitations on the positional relationship in the actual product.

[0037] In the embodiment of the present application, a flue gas dedusting fan energy-saving control system is provided, which is arranged in a blast furnace casthouse environment dedusting system, such as Figure 1 As shown in the figure, the blast furnace casthouse environment dedusting system comprises a dust collector 3 connected with the tapping hole 1 and the ladle position 2, the outlet of the dust collector 3 is connected with the inlet of the dedusting fan 4, and the outlet of the dedusting fan 4 is connected with the chimney 5; as shown in Figure 1 and Figure 2 The flue gas dedusting fan energy-saving control system specifically comprises:

[0038] A first TSP sampler 6 is arranged at the tapping hole 1 and used for monitoring the TSP value of the tapping hole 1;

[0039] A second TSP sampler 7 is arranged at the ladle position 2 and used for monitoring the TSP value of the ladle position 2;

[0040] A first particulate matter sensor 8 is arranged at the inlet of the dust collector 3 and used for collecting the particulate matter content of the inlet of the dust collector 3, i.e. the dust content of the inlet of the dust collector 3;

[0041] A second particulate matter sensor 9 is arranged at the discharge port of the chimney 5 and used for collecting the particulate matter content of the discharge port of the chimney 5, i.e. the dust content of the environmental discharge port;

[0042] A pressure sensor 10 is arranged at the outlet of the dust collector 3 and used for collecting the pressure of the outlet of the dust collector 3;

[0043] A damper 11 is arranged at the inlet of the dedusting fan 4;

[0044] A terminal 12 is connected with the dust collector 3, the dedusting fan 4, the first TSP sampler 6, the second TSP sampler 7, the first particulate matter sensor 8, the second particulate matter sensor 9, the pressure sensor 10 and the damper 11.

[0045] In the hardware architecture of the flue gas dedusting fan energy-saving control system provided in the embodiment of the present application, since the terminal 12 is connected with the dedusting fan 4 and the damper 11, before starting the blast furnace ironmaking, the initial fan rotating speed and the fan inlet damper opening degree can be sent to the dedusting fan 4 and the damper 11 through the terminal 12, so that the dedusting fan 4 and the damper 11 can work at the initial fan rotating speed and the fan inlet damper opening degree when the blast furnace ironmaking is performed.

[0046] Further, when the mud gun and the opening machine of the tapping hole 1 are started, the dust hood inlet valve of the tapping hole 1 and the dust hood inlet valve of the tank position are opened, and the dust removal fan 4 is started to operate, so that the blast furnace is operated. Since the terminal 12 is connected with the first TSP sampler 6, the second TSP sampler 7, the first particulate matter sensor 8, the second particulate matter sensor 9 and the pressure sensor 10, in the process of operating the blast furnace, the terminal 12 can monitor the TSP1 value of the tapping hole environment and the TSP2 value of the tank position environment in real time through the first TSP sampler 6 and the second TSP sampler 7, monitor the particulate matter content (dust content) of the dust remover inlet and the particulate matter content (dust content) of the environmental protection discharge port in real time through the first particulate matter sensor 8 and the second particulate matter sensor 9, and monitor the pressure of the dust remover outlet in real time through the pressure sensor 10. In addition, since the terminal 12 is connected with the dust remover 3 and the dust removal fan 4, in the process of operating the blast furnace, the terminal 12 can also obtain the dust remover blowing period and time and the fan real-time operation parameters, wherein the fan real-time operation parameters include but are not limited to the fan and motor bearing temperature and vibration value, frequency converter current and rotating speed, etc.

[0047] Therefore, when the staff wants to adjust the dust removal fan rotating speed and the dust removal fan inlet damper opening degree, the TSP1 value of the tapping hole environment, the TSP2 value of the tank position environment, the dust content of the dust remover inlet, the dust content of the environmental protection discharge port and the dust remover outlet pressure and other environmental factors can be considered at the same time, and the dust remover blowing period and time and the fan operation parameters can also be considered, so that the dust removal fan rotating speed and the dust removal fan inlet damper opening degree more suitable for the current blast furnace working environment can be obtained, and the updated dust removal fan rotating speed and dust removal fan inlet damper opening degree can be sent to the dust removal fan 4 and the damper 11 through the terminal 12 to realize the adjustment of the dust removal fan 4. As an optional embodiment, the more suitable dust removal fan rotating speed and dust removal fan inlet damper opening degree can be parameters that can keep the TSP1 value of the tapping hole environment, the TSP2 value of the tank position environment and the dust content of the environmental protection discharge port stable while making the fan energy consumption lower.

[0048] Specifically, how to adjust the dust removal fan rotating speed and the dust removal fan inlet damper opening degree according to the above-mentioned multiple environmental factors does not belong to the content involved in the present application. As an optional way, the person skilled in the art can use the preset setting values stored in the database to realize it in actual implementation. Of course, the person skilled in the art can also select other conventional control means according to the actual situation to realize it. The embodiment of the present application only provides a contribution on the hardware architecture for adjusting the dust removal fan rotating speed and the dust removal fan inlet damper opening degree according to the above-mentioned multiple environmental factors in the environment dust removal system of the blast furnace tapping field of the steel plant, so the present application does not involve the improvement on the method.

[0049] In addition, the dust removal fan 4 can be a centrifugal fan or an axial fan. When the fan speed is adjusted, the fan frequency can be adjusted, or the fan guide vane or fluid coupling can be adjusted.

[0050] Further, as shown in the Figure 3 dust removal fan energy-saving control system further comprises:

[0051] The first camera 13 is arranged at the taphole 1 and is used to collect images of the mud gun and the opening machine of the taphole 1.

[0052] The second camera 14 is arranged at the ladle position 2 and is used to collect images of the ladle position 2.

[0053] The terminal 12 is connected with the first camera 13 and the second camera 14.

[0054] Through the first camera 13 and the second camera 14 arranged at the taphole 1 and the ladle position 2 respectively, the terminal 12 can remotely monitor and identify the actions of the mud gun and the opening machine and remotely monitor and identify the working state of the ladle position through the images collected by the cameras, thereby providing data basis for the worker to open the dust cover inlet valve of the taphole 1 and the dust cover inlet valve of the ladle position. In other words, as an optional implementation, the terminal 12 can issue a command to open the dust cover inlet valve of a certain taphole 1 or a certain ladle position and close other dust cover inlet valves after analyzing the collected images.

[0055] Further, as shown in the Figure 4 terminal 12 specifically includes a processor 121, a communication module 122 and a human-computer interaction component 123, the communication module 122 and the human-computer interaction component 123 are connected with the processor 121, and the communication module 122 is used to establish a communication connection with the dust collector 3, the dust removal fan 4, the first TSP sampler 6, the second TSP sampler 7, the first particulate matter sensor 8, the second particulate matter sensor 9, the pressure sensor 10 and the damper 11.

[0056] The communication module 122 specifically can include a plurality of input and output interfaces and a wireless communication module, and the communication module 122 can communicate with other components through wired connection through the input and output interfaces, or can wirelessly communicate with other components through the wireless communication module.

[0057] From another angle, the terminal 12 can include a mainboard, a CPU, a memory, a display, an input device, an input and output interface and an expansion module and the like components. The input and output interface can realize communication with external devices such as DCS (PLC), sensors, actuators, gateway devices and the like.

[0058] The staff can set the speed of the dust removal fan 4 and the air door 11 and the air inlet door opening degree through the human-computer interaction component 123, and can view the values collected by various samplers, sensors, etc., and can view the dust remover blowing period and time and the fan operation parameters.

[0059] Further, as shown in the figure, the terminal 12 can further include an alarm module 124 connected with the processor 121. Figure 4

[0060] The alarm module 124 can be an audible and visual alarm.

[0061] By setting the alarm module 124, when the data received by the terminal 12 is abnormal, the terminal 12 can send a control signal to the alarm module 124 to alarm and notify the staff to handle.

[0062] In summary, the embodiment of the present application provides a new hardware architecture of a flue gas dust removal fan energy-saving control system. The first TSP sampler is arranged at the taphole of the blast furnace environment dust removal system, the second TSP sampler is arranged at the ladle position, the first particulate matter sensor is arranged at the inlet of the dust remover, the second particulate matter sensor is arranged at the chimney discharge port, the pressure sensor is arranged at the outlet of the dust remover, and the air door is arranged at the inlet of the dust removal fan. The terminal is connected with the dust remover, the dust removal fan, the first TSP sampler, the second TSP sampler, the first particulate matter sensor, the second particulate matter sensor, the pressure sensor and the air door. During the process of blast furnace ironmaking, the terminal can monitor the taphole environment TSP1 value, the ladle position environment TSP2 value, the dust content at the inlet of the dust remover, the dust content at the environmental protection discharge port, the pressure at the outlet of the dust remover, the dust remover blowing period and time, and the real-time operation parameters of the dust removal fan. When the staff wants to adjust the speed of the dust removal fan and the air inlet door opening degree of the dust removal fan, the taphole environment TSP1 value, the ladle position environment TSP2 value, the dust content at the inlet of the dust remover, the dust content at the environmental protection discharge port and the pressure at the outlet of the dust remover can be considered comprehensively, and the dust remover blowing period and time and the fan operation parameters can also be considered to obtain the speed of the dust removal fan and the air inlet door opening degree of the dust removal fan that can make the above-mentioned multiple environmental factors meet certain conditions and are more suitable for the current blast furnace ironmaking working environment. The updated speed of the dust removal fan and the air inlet door opening degree of the dust removal fan are sent to the dust removal fan and the air door through the terminal to realize the adjustment of the dust removal fan.

[0063] ​The hardware architecture of the flue gas dust removal fan energy-saving control system provided in the embodiments of the present application is provided with samplers and various sensors at multiple key positions of the blast furnace casthouse environment dust removal system, and the terminal can monitor multiple real-time environmental factor values related to the dust removal effect and the fan operation in real time, thereby providing rich and detailed data support for accurate adjustment of the fan, compared with the prior system that only adjusts according to a single factor of the flue gas flow rate, the system can more comprehensively, timely and accurately grasp the overall operation condition of the system, and avoids the problem of inaccurate adjustment due to information lag or incompleteness; the flue gas dust removal fan energy-saving control system provided in the embodiments of the present application provides hardware support for ensuring that the adjustment of the dust removal fan can meet the requirements of multiple environmental conditions in the system.

[0064] With the hardware architecture of the flue gas dust removal fan energy-saving control system provided in the present application, the dust removal fan speed adjustment can no longer be performed only according to the flue gas flow rate, but can be performed by comprehensively considering multiple environmental factors, thereby avoiding that only a single environmental factor is considered when the dust removal fan is adjusted, and other environmental factors are negatively affected and not suitable (for example, not meeting the requirements of environmental protection and energy saving).

[0065] With the new hardware architecture of the flue gas dust removal fan energy-saving control system provided in the present application, when the dust removal fan is adjusted, it is no longer dependent on a single index, and the hardware contributes to providing an optimal adjustment scheme under the premise that the environmental emission standards (such as the dust content at the exhaust port, the environmental TSP1 value and the tank environment TSP2 value not exceeding the standard) are met, and the operating parameters of the dust removal device and the fan are in a suitable range. In this way, the operation of the fan is more in line with the current blast furnace ironmaking conditions, and the situation of low fan operation efficiency or energy waste is avoided.

[0066] The hardware architecture of the flue gas dust removal fan energy-saving control system provided in the embodiments of the present application can be applied to two situations: manual control and automatic control. For manual control, since multiple signals are collected, the staff can consider multiple factors to make more objective and accurate analysis and judgment for manual control; for automatic control, the conventional control idea and logic can be followed.

[0067] The technical features of the above embodiments can be combined in any manner (as long as the combination of the technical features does not exist contradictions), in order to make the description simple, not all possible combinations of the technical features in the above embodiments are described; the embodiments not explicitly written should also be considered as the scope of the present application.

Claims

1. A flue gas dedusting fan energy-saving control system, characterized in that, The application discloses a blast furnace casthouse environment dust removal system, which comprises a dust remover connected with a tapping hole and a ladle position, an outlet of the dust remover is connected with an inlet of a dust removal fan, and an outlet of the dust removal fan is connected with a chimney. A first TSP sampler is arranged at the tapping hole and used for monitoring a TSP value of the tapping hole. A second TSP sampler is arranged at the ladle position and used for monitoring a TSP value of the ladle position. A first particulate matter sensor is arranged at an inlet of the dust remover and used for collecting particulate matter content of the inlet of the dust remover. A second particulate matter sensor is arranged at a discharge port of the chimney and used for collecting particulate matter content of the discharge port of the chimney. A pressure sensor is arranged at an outlet of the dust remover and used for collecting pressure of the outlet of the dust remover. A damper is arranged at an inlet of the dust removal fan. A terminal is connected with the dust remover, the dust removal fan, the first TSP sampler, the second TSP sampler, the first particulate matter sensor, the second particulate matter sensor, the pressure sensor and the damper.

2. The energy saving control system for flue gas dedusting fan according to claim 1, characterized in that, The dust removal fan is a centrifugal fan or an axial flow fan. The terminal comprises a processor, a communication module and a human-computer interaction component, the communication module and the human-computer interaction component are connected with the processor, and the communication module is used for establishing a communication connection with the dust remover, the dust removal fan, the first TSP sampler, the second TSP sampler, the first particulate matter sensor, the second particulate matter sensor, the pressure sensor and the damper. The terminal further comprises an alarm module, and the alarm module is connected with the processor. The alarm module is an audible and visual alarm.

3. The energy saving control system for flue dusting fan as claimed in claim 1 wherein, The terminal further comprises a first camera arranged at the tapping hole and used for collecting images of a mud gun and an opening machine of the tapping hole.

4. The energy saving control system for flue dusting fan as claimed in claim 1 wherein, A second camera is arranged at the ladle position and used for collecting images of the ladle position.

5. The energy saving control system for flue dusting fan as claimed in claim 4 wherein, The terminal is connected with the first camera and the second camera.

6. The energy saving control system for flue dusting fan as claimed in claim 5 wherein, The terminal further comprises an alarm module, and the alarm module is connected with the processor. The alarm module is an audible and visual alarm.

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