Blast furnace stokehole cooling control system and method

Abstract

The invention discloses a blast furnace stokehole cooling control system and method.The system comprises an iron notch drill, a hydraulic clay gun and a control unit, the iron notch drill is used for opening a blast furnace iron notch, and the hydraulic clay gun is used for blocking the blast furnace iron notch after tapping is completed; the control unit is electrically connected with the iron notch drilling machine and the hydraulic clay gun, and when the iron notch drilling machine starts iron notch drilling operation, the control unit controls the cooling pipeline valve of the gap bridge and the cooling pipeline valve of the clay gun foundation protection to be opened; and when the hydraulic clay gun finishes the plugging operation, the control unit controls the cooling pipeline valve part of the gap bridge to be closed and controls the cooling pipeline valve of the clay gun foundation protection to be closed. Through signal transmission of the taphole drill, the hydraulic clay gun and the control unit, the cooling pipeline valve state of the gap bridge, the clay gun foundation protection and other stokehole equipment is automatically controlled according to operation start and stop of the taphole drill and the hydraulic clay gun, and the purposes of reliable cooling and resource saving are achieved.

Description

Technical Field

[0001] This invention relates to the field of blast furnace front cooling technology, and particularly to a blast furnace front cooling control system and method. Background Technology

[0002] The blast furnace front area is where slag and iron are tapped and slag and iron are handled. Its operations include tasks primarily involving tapping slag and iron, as well as maintenance of the taphole, skimmers and slag / iron troughs, tapping equipment, and tuyere replacement. Even with the slag / iron trough covers, several areas in front of the blast furnace still experience excessively high temperatures during tapping, especially near the taphole. Frequent switching between taphole opening and mud gun plugging leaves most of the main tuyere open, causing molten iron to directly heat surrounding equipment and significantly reducing their lifespan. Therefore, water cooling is typically used to protect equipment in the high-temperature area in front of the furnace, extending its service life and improving its overall lifespan.

[0003] The blast furnace cooling system mainly includes a water-cooled bridge cooling device, a mud gun foundation protection device cooling device, a mud gun barrel cooling device, a mud gun nozzle flushing device, an atomizing device, and a furnace front hydraulic system cooling device.

[0004] During the tapping process in a blast furnace, the area above the taphole is exposed to high temperatures. To ensure that workers on the tuyeres platform above the taphole can pass through, inspect, and maintain the equipment normally, a water-cooled bridge is often installed above the taphole. Cooling water is introduced into the bridge to cool it, thus isolating it from the baking effect of the molten iron below and ensuring the safety of the workers.

[0005] During the tapping process of the blast furnace, the hydraulic mud gun foundation is also exposed to high temperature molten iron for a long time. Placing the mud gun foundation water-cooled protection device on the side of the mud gun foundation near the main trench and circulating cooling water can provide good protection for the foundation and extend the service life of the equipment.

[0006] After tapping iron from the blast furnace, the hydraulic mud gun needs to be quickly and accurately plugged. During the plugging process, the mud gun barrel is constantly exposed to the heat of the molten iron in the main trough. Therefore, to extend the equipment's lifespan, cooling water needs to be circulated to cool the barrel. After the mud gun has finished plugging and rotated to the stop position, the hot nozzle needs to be flushed and cooled to prevent severe burns.

[0007] During the process of opening the iron tap, the tapping machine will generate a large amount of smoke and dust at the tapping point. In order to prevent the smoke and dust from escaping and polluting the environment, while ensuring the ventilation and dust removal effect, it is necessary to atomize and reduce dust at the tapping point.

[0008] Currently, the cooling systems at the furnace front are independent, with the start and end of cooling water supply controlled manually. This makes them susceptible to damage due to operator error. To avoid these problems, some companies keep the cooling water continuously flowing. While this method effectively protects the equipment, it results in a significant waste of resources and energy. Summary of the Invention

[0009] The purpose of this invention is to provide a blast furnace front cooling control system that solves the problem that existing blast furnace front cooling systems cannot simultaneously achieve reliable cooling and avoid resource waste.

[0010] The above-mentioned objectives of the present invention can be achieved by the following technical solutions:

[0011] This invention provides a blast furnace front cooling control system, including a taphole opener, a hydraulic mud gun, and a control unit. The taphole opener is used to open the blast furnace taphole, and the hydraulic mud gun is used to seal the blast furnace taphole after tapping. The control unit is electrically connected to both the taphole opener and the hydraulic mud gun. When the taphole opener starts tapping, the control unit controls the cooling pipe valves of the bridge and the cooling pipe valves of the mud gun base protection to open. When the hydraulic mud gun finishes sealing, the control unit controls the cooling pipe valves of the bridge to partially close and the cooling pipe valves of the mud gun base protection to close.

[0012] Preferably, the control unit includes a first control module and a second control module, wherein the first control module is used to control the opening and closing of the cooling pipe valves of the bridge, and the second control module is used to control the opening and closing of the cooling pipe valves of the mud gun foundation protection.

[0013] Furthermore, the taphole machine is equipped with an atomizing device and an atomizing control module. The atomizing control module is electrically connected between the taphole machine and the control valve of the atomizing device. When the taphole machine starts taphole operation, the atomizing control module controls the control valve of the atomizing device to open. When the taphole machine finishes taphole operation, the atomizing control module controls the control valve of the atomizing device to close.

[0014] Preferably, the control unit is electrically connected to the atomizing device. When the taphole machine and / or the atomizing device start working, the control unit controls the cooling pipe valve of the bridge and the cooling pipe valve of the mud gun foundation protection to open.

[0015] Furthermore, the hydraulic mud gun is equipped with a barrel cooling device and a cooling control module. The cooling control module is electrically connected between the hydraulic mud gun and the control valve of the barrel cooling device. When the hydraulic mud gun starts the plugging operation, the cooling control module controls the control valve of the barrel cooling device to open. When the hydraulic mud gun finishes the plugging operation, the cooling control module controls the control valve of the barrel cooling device to close.

[0016] Preferably, the hydraulic mud gun is further provided with a nozzle flushing device and a flushing control module. The flushing control module is electrically connected between the hydraulic mud gun and the control valve of the nozzle flushing device. When the hydraulic mud gun finishes the plugging operation, the flushing control module controls the control valve of the nozzle flushing device to open. After the preset flushing time is reached, the flushing control module controls the control valve of the nozzle flushing device to close.

[0017] Preferably, multiple cooling water channels are arranged in parallel within the bridge, and these multiple cooling water channels can fully cover the bridge surface. When the taphole machine starts taphole operation, the first control module controls the cooling pipe valves of each cooling water channel to open; when the hydraulic mud gun finishes the taphole blocking operation, the first control module controls the cooling pipe valves of some of the cooling water channels to close.

[0018] Preferably, the bridge is provided with an S-shaped cooling water channel that fully covers the bridge surface. The cooling water channel is equipped with an adjustable cooling pipe valve. When the taphole machine starts taphole operation, the first control module controls the cooling pipe valve to be fully open. When the hydraulic mud gun finishes the taphole blocking operation, the first control module controls the cooling pipe valve of the cooling water channel to be partially open.

[0019] Another objective of this invention is to provide a blast furnace front cooling control method, which is implemented using the blast furnace front cooling control system described above, comprising: acquiring a taphole start signal of the taphole machine; after acquiring the taphole start signal, the control unit controls the cooling pipe valves of the bridge and the cooling pipe valves of the mud gun foundation protection to open based on the taphole start signal; acquiring a plugging operation stop signal of the hydraulic mud gun; after acquiring the plugging operation stop signal of the hydraulic mud gun, the control unit controls the cooling pipe valves of the bridge to partially close and the cooling pipe valves of the mud gun foundation protection to close based on the plugging operation stop signal.

[0020] Specifically, when the feed motor of the taphole opener starts feeding, the taphole opener sends a taphole opening operation start signal to the control unit; when the hydraulic mud gun's rotating cylinder holds pressure for a preset time, the hydraulic mud gun sends a taphole blocking operation stop signal to the control unit.

[0021] The features and advantages of this invention are as follows: The blast furnace front cooling control system provided in this application realizes the automatic control of the cooling pipe valve status of furnace front equipment such as bridges and mud gun foundation protection based on the signal transmission between the taphole machine, hydraulic mud gun and control unit according to the start and stop of the taphole machine and hydraulic mud gun operation, so as to achieve the purpose of both reliable cooling and resource saving. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the composition of the blast furnace front cooling control system provided in an embodiment of the present invention.

[0024] Explanation of icon numbers:

[0025] 1. Hydraulic pump station; 2. Control valve platform; 3. Hydraulic mud gun; 4. Iron tapping machine; 5. First control module; 6. Second control module; 7. Atomization control module; 8. Cooling control module; 9. Flushing control module. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] like Figure 1As shown, this invention provides a blast furnace front cooling control system, including a taphole opener 4, a hydraulic mud gun 3, and a control unit. The taphole opener 4 is used to open the blast furnace taphole, and the hydraulic mud gun 3 is used to seal the blast furnace taphole after tapping. The control unit is electrically connected to both the taphole opener 4 and the hydraulic mud gun 3. When the taphole opener 4 starts tapping, the control unit controls the opening of the cooling pipe valves of the bridge and the cooling pipe valves of the mud gun foundation protection. When the hydraulic mud gun 3 finishes sealing, the control unit controls the partial closing of the cooling pipe valves of the bridge and the cooling pipe valves of the mud gun foundation protection. Thus, through signal transmission between the taphole opener 4, the hydraulic mud gun 3, and the control unit, the status of the cooling pipe valves of the bridge and the mud gun foundation protection equipment is automatically controlled according to the start and stop of the taphole opener 4 and the hydraulic mud gun 3, achieving both reliable cooling and resource conservation. It should be noted that the control unit controls the partial closing of the cooling pipe valves of the bridge by controlling the number and / or degree of opening and closing of the cooling pipe valves of the bridge. In this embodiment, the cooling medium flowing into the cooling pipes of the bridge and the mud gun foundation protection is cooling water. By controlling the number of opening and closing valves and / or the opening degree of the corresponding cooling pipe valves, dynamic adjustment and control of the cooling of the corresponding furnace front equipment can be achieved. Both the taphole machine 4 and the hydraulic mud gun 3 are connected to the hydraulic pump station 1 via the control valve platform 2.

[0028] Specifically, the taphole opening machine 4 performs taphole opening operations including a preparation and positioning stage, a taphole opening operation stage, and a return to standby position stage. When the blast furnace hearth reaches a safe iron capacity and the taphole needs to be opened for tapping, the hydraulic pump station 1 starts, and the hydraulic system begins to work. The taphole opening machine 4 is hydraulically driven. Under the control of the control valve platform 2, oil is introduced into the rodless chamber of the drill rod clamping cylinder to clamp the drill rod. At the same time, oil is supplied to the rodless chamber of the rotating hydraulic cylinder, and the rotating arm begins to rotate. From the standby position until the trolley rail beam rotates to the tapping position above the main iron trough and stops, oil is then introduced into the rodless chamber of the tilting cylinder, and the drill tilts, so that the anchor hook catches the anchor hook seat and the drill rod is aligned with the taphole. At this point, the preparation and positioning stage of the taphole opening machine 4 is completed. In the taphole opening operation stage, the feed motor rotates forward, driving the trolley to move forward slowly. When the drill rod approaches the taphole, the drilling motor of the vibrating mechanism starts to rotate. When the drill bit touches the taphole, the impactor also starts to work. During the taphole opening process, drilling and impacting occur simultaneously, and the feed motor also feeds slowly. After the taphole is opened, the taphole opener 4 enters the recovery standby position. Under the control of the control valve panel 2, the feed motor rotates rapidly in the reverse direction, causing the trolley to retract quickly. At the same time, the impactor is shut off. When the drill bit is completely withdrawn, the drilling motor stops, oil enters the rod chamber of the tilting cylinder, the anchor hook disengages, the drilling rig is leveled, and then oil is supplied to the rod chamber of the rotary hydraulic cylinder, the boom rotates in the reverse direction, and the taphole opener 4 returns to the standby position. To further achieve resource conservation, preferably, when the taphole opener 4 enters the taphole opening operation stage, the control unit controls the cooling pipe valves of the bridge and the cooling pipe valves of the mud gun foundation protection to open.

[0029] The hydraulic mud gun 3 performs the plugging operation, which includes a mud-pumping positioning stage, a plugging operation stage, and a return to standby stage. Near the end of blast furnace tapping, the hydraulic mud gun 3, hydraulically driven and controlled by the control valve platform 2, receives oil in the rodless chamber of the rotary cylinder, driving the mud gun body to rotate from the standby position to the taphole and press the nozzle against the mud sleeve. This completes the mud-pumping positioning stage. During the plugging operation stage, oil is supplied to the rodless chamber of the mud-pumping cylinder until the mud-pumping is finished. During this process, the rotary cylinder maintains pressure to keep the mud gun body at the taphole until the plugging operation is complete. After the rotary cylinder maintains pressure for a preset time (the time required for the mud gun body to complete the plugging operation), the hydraulic mud gun 3 enters the return to standby stage. Oil is supplied to the rod chamber of the rotary cylinder, the mud gun body rotates in the opposite direction to the standby position, and oil is supplied to the rod chamber of the mud-pumping cylinder, returning to the mud-loading state. In this embodiment, the preset pressure-holding time of the rotary cylinder is approximately 30 minutes. To further conserve resources, preferably, when the hydraulic mud gun 3 enters the plugging operation stage, the control unit controls the cooling pipe valve of the bridge to partially close, and controls the cooling pipe valve of the mud gun foundation protection to close.

[0030] According to a preferred embodiment of the present invention, such as Figure 1 As shown, the control unit includes a first control module 5 and a second control module 6. The first control module 5 controls the opening and closing of the cooling pipe valves of the bridge, and the second control module 6 controls the opening and closing of the cooling pipe valves of the mud gun foundation protection. This arrangement allows the first control module 5 and the second control module 6 to be positioned close to the control target, so that operators near the control target can take control if the automatic control system malfunctions.

[0031] According to one embodiment of the present invention, such as Figure 1 As shown, the taphole opener 4 is equipped with an atomizing device and an atomizing control module 7. The atomizing control module 7 is electrically connected between the taphole opener 4 and the control valve of the atomizing device. When the taphole opener 4 starts taphole operation, the atomizing control module 7 controls the control valve of the atomizing device to open; when the taphole opener 4 finishes taphole operation, the atomizing control module 7 controls the control valve of the atomizing device to close. By simultaneously activating the atomizing device when the taphole opener 4 starts taphole operation, dust can be atomized and reduced at the taphole location in a timely manner, and by simultaneously deactivating the atomizing device when the taphole opener 4 finishes taphole operation, water conservation is achieved.

[0032] According to a preferred embodiment of the present invention, the control unit is electrically connected to the atomizing device. When the taphole machine 4 and / or the atomizing device start working, the control unit controls the opening of the cooling pipe valves of the bridge and the cooling pipe valves of the mud gun foundation protection. By using the start-up signal of at least one of the taphole machine 4 and the atomizing device, which start working synchronously, as the input signal for the control unit to control the opening of the cooling pipe valves of the bridge and the cooling pipe valves of the mud gun foundation protection, multi-channel input signal acquisition is achieved.

[0033] According to one embodiment of the present invention, such as Figure 1 As shown, the hydraulic mud gun 3 is equipped with a barrel cooling device and a cooling control module 8. The cooling control module 8 is electrically connected between the hydraulic mud gun 3 and the control valve of the barrel cooling device. When the hydraulic mud gun 3 begins the plugging operation, the cooling control module 8 controls the control valve of the barrel cooling device to open; when the hydraulic mud gun 3 finishes the plugging operation, the cooling control module 8 controls the control valve of the barrel cooling device to close. By linking the opening and closing of the control valve of the barrel cooling device with the plugging operation status of the hydraulic mud gun 3, the barrel can be cooled in a timely manner, thus achieving resource conservation.

[0034] According to a preferred embodiment of the present invention, such as Figure 1 As shown, the hydraulic mud gun 3 is also equipped with a nozzle flushing device and a flushing control module 9. The flushing control module 9 is electrically connected between the hydraulic mud gun 3 and the control valve of the nozzle flushing device. When the hydraulic mud gun 3 finishes the plugging operation, the flushing control module 9 controls the control valve of the nozzle flushing device to open. After the preset flushing time is reached, the flushing control module 9 controls the control valve of the nozzle flushing device to close. By associating the opening timing of the control valve of the nozzle flushing device with the state of the hydraulic mud gun 3 after the plugging operation is completed, the nozzle can be flushed and cooled in a timely manner to avoid overheating and burning of the nozzle. Preferably, the preset flushing time is the time required from the start of nozzle flushing to the nozzle cooling down to ambient temperature.

[0035] According to a preferred embodiment of the present invention, multiple cooling water channels are arranged in parallel inside the bridge, and the multiple cooling water channels can fully cover the bridge surface. When the taphole machine 4 starts taphole opening operation, the first control module 5 controls the cooling pipe valves of each cooling water channel to open; when the hydraulic mud gun 3 finishes the taphole blocking operation, the first control module 5 controls the cooling pipe valves of some cooling water channels to close. Specifically, when the taphole opener 4 begins taphole operation, that is, when the blast furnace is in the tapping state, the area above the taphole is severely heated by the molten iron. To ensure the cooling effect of the water-cooled bridge, the first control module 5 controls the valves of the cooling pipes of each cooling water channel to open, so that all cooling water channels are connected. This ensures that enough cooling water enters the water-cooled bridge and fully covers the bridge surface, thereby improving the cooling effect of the water-cooled bridge and coping with the high temperature heating under the tapping conditions of the blast furnace. When the hydraulic mud gun 3 finishes the taphole blocking operation, that is, when the blast furnace is in the non-tapping state, the area above the taphole is relatively less heated by the molten iron. The first control module 5 controls the valves of some cooling water channels to close, and connecting only some cooling water channels is sufficient to ensure the cooling effect of the water-cooled bridge. Preferably, one of each pair of adjacent cooling water channels is connected, that is, multiple cooling water channels arranged in parallel are connected one at a time.

[0036] According to a preferred embodiment of the present invention, a cooling water channel with an S-shaped, fully covered cross-section is provided within the bridge. The cooling water channel is equipped with adjustable cooling pipe valves. When the taphole opener 4 begins taphole opening operation, the first control module 5 controls the cooling pipe valves to be fully open; when the hydraulic mud gun 3 finishes its taphole sealing operation, the first control module 5 controls the cooling pipe valves of the cooling water channel to be partially open. Thus, the opening of the cooling pipe valves of the cooling water channel is controlled according to the degree of heating of the area above the taphole by molten iron, thereby controlling the water volume within the bridge to balance the cooling effect and water conservation. The S-shaped, fully covered cooling water channel can be a single channel with a relatively wide flow cross-section, or multiple channels with relatively narrow flow cross-sections arranged in parallel; this application does not impose any limitations on this.

[0037] Another objective of this invention is to provide a blast furnace front cooling control method. This method employs the aforementioned blast furnace front cooling control system and includes: acquiring a taphole start signal from the taphole machine 4; upon acquiring the taphole start signal, the control unit controls the opening of the cooling pipe valves of the bridge and the cooling pipe valves of the mud gun foundation protection based on the taphole start signal; acquiring a plugging operation stop signal from the hydraulic mud gun 3; upon acquiring the plugging operation stop signal from the hydraulic mud gun 3, the control unit controls the partial closure of the cooling pipe valves of the bridge and the closure of the cooling pipe valves of the mud gun foundation protection based on the plugging operation stop signal of the hydraulic mud gun 3. Thus, by controlling the opening and closing states of the cooling pipe valves of the bridge and the cooling pipe valves of the mud gun foundation protection based on the taphole start signal of the taphole machine 4 and the plugging operation stop signal of the hydraulic mud gun 3, the method achieves timely and automatic control of the cooling of the furnace front equipment.

[0038] According to one embodiment of the present invention, when the feed motor of the taphole opener 4 starts feeding, the taphole opener 4 sends a taphole opening operation start signal to the control unit; when the pressure holding time of the rotary cylinder of the hydraulic mud gun 3 reaches a preset time requirement, the hydraulic mud gun 3 sends a taphole sealing operation stop signal to the control unit. By using the feed motor start signal during the taphole opening operation as the taphole opening operation start signal, and using the rotary cylinder pressure holding time reaching a preset time requirement during the taphole sealing operation as the taphole sealing operation stop signal, resources are further saved.

[0039] The specific implementation process is as follows: When the feed motor of the taphole opener 4 starts feeding, the taphole opener 4 simultaneously sends a taphole opening start signal to the first control module 5, the second control module 6, and the atomization control module 7. After receiving the taphole opening start signal, the first control module 5 controls the opening of the cooling pipe valve of the bridge to achieve bridge cooling; after receiving the taphole opening start signal, the second control module 6 controls the opening of the cooling pipe valve of the mud gun foundation protection to achieve mud gun foundation protection cooling; after receiving the taphole opening start signal, the atomization control module 7 controls the opening of the control valve of the atomization device, and the atomized water enters the atomization device to atomize as the taphole opener 4 operates. After the taphole is opened, the taphole opener 4 enters the recovery standby position stage, the feed motor quickly reverses rotation, and the taphole opener 4 sends a taphole opening end signal to the atomization control module 7. After receiving the taphole opening end signal, the atomization control module 7 controls the closing of the control valve of the atomization device, and the taphole opener 4 returns to the standby position.

[0040] When the hydraulic mud gun 3 enters the plugging operation stage, oil is introduced into the rodless chamber of the mud-discharging cylinder. The hydraulic mud gun 3 sends a plugging operation start signal to the cooling control module 8. After receiving the plugging operation start signal, the cooling control module 8 controls the opening of the control valve of the gun body cooling device to achieve gun body cooling. During the plugging operation, the rotating cylinder maintains pressure to keep the mud gun body at the iron outlet for stable mud discharging. After the rotating cylinder of the hydraulic mud gun 3 maintains pressure for the preset time, oil is introduced into the rod chamber of the rotating cylinder, the mud gun body rotates in the opposite direction to the standby position, oil is introduced into the rod chamber of the mud-discharging cylinder, and the mud-discharging cylinder returns to the mud-loading state; at the same time, the hydraulic mud gun 3 sends a plugging operation stop signal to the first control module 5, the second control module 6, and the flushing control module 9. After receiving the shutdown signal for the plugging operation, the first control module 5 partially closes the valves of the cooling pipes of the bridge to reduce the amount of cooling water. The second control module 6, upon receiving the shutdown signal, closes the valves of the cooling pipes for the mud gun foundation protection, ending the cooling process. The flushing control module 9, upon receiving the shutdown signal, opens the control valve of the nozzle flushing device to promptly flush and cool the nozzle. After the preset flushing time is reached, the flushing control module 9 closes the control valve of the nozzle flushing device. Specifically, after the first control module 5 partially closes the valves of the cooling pipes of the bridge upon receiving the shutdown signal, the amount of cooling water entering the bridge is only required to maintain the cooling intensity of the bridge during non-tapping processes.

[0041] Based on the above description, the blast furnace front cooling control system and method provided in this application have the following beneficial effects:

[0042] The blast furnace cooling control system provided in this application embodiment achieves automatic control of the cooling pipe valve status of furnace front equipment such as bridges and mud gun foundation protection based on the signal transmission between the taphole machine 4, the hydraulic mud gun 3 and the control unit, according to the start and stop of the taphole machine 4 and the hydraulic mud gun 3, so as to achieve the purpose of both reliable cooling and resource saving. At the same time, an atomization control module 7 associated with the start and stop status of the taphole machine 4, a cooling control module 8 associated with the start and stop status of the hydraulic mud gun 3 and a flushing control module 9 are set up to realize the automatic control of the opening and closing of the control valves of the atomization device, the barrel cooling device and the nozzle flushing device.

[0043] The blast furnace cooling control method provided in this application uses a control unit to control the opening and closing status of the cooling pipe valves of the bridge and the cooling pipe valves of the mud gun foundation protection based on the start signal of the taphole machine 4 and the stop signal of the plugging operation of the hydraulic mud gun 3, thereby achieving the purpose of timely and automatic control of the cooling of the furnace front equipment.

[0044] The above descriptions are merely a few embodiments of the present invention. Those skilled in the art can make various modifications or variations to the embodiments of the present invention based on the content disclosed in the application documents without departing from the spirit and scope of the present invention.

Claims

1. A blast furnace front cooling control system, characterized in that, It includes a taphole opener, a hydraulic mud gun, and a control unit. The taphole opener is used to open the blast furnace taphole, and the hydraulic mud gun is used to seal the blast furnace taphole after tapping is completed. The control unit is electrically connected to both the taphole opening machine and the hydraulic mud gun. When the taphole opening machine starts taphole opening operation, the control unit controls the cooling pipe valves of the bridge and the cooling pipe valves of the mud gun foundation protection to open. When the hydraulic mud gun finishes the taphole blocking operation, the control unit controls the cooling pipe valves of the bridge to partially close and controls the cooling pipe valves of the mud gun foundation protection to close.

2. The blast furnace front cooling control system according to claim 1, characterized in that, The control unit includes a first control module and a second control module. The first control module is used to control the opening and closing of the cooling pipe valves of the bridge, and the second control module is used to control the opening and closing of the cooling pipe valves of the mud gun foundation protection.

3. The blast furnace front cooling control system according to claim 1, characterized in that, The taphole opening machine is equipped with an atomizing device and an atomizing control module. The atomizing control module is electrically connected between the taphole opening machine and the control valve of the atomizing device. When the taphole opening machine starts taphole opening operation, the atomizing control module controls the control valve of the atomizing device to open. When the taphole opening machine finishes taphole opening operation, the atomizing control module controls the control valve of the atomizing device to close.

4. The blast furnace front cooling control system according to claim 3, characterized in that, The control unit is electrically connected to the atomizing device. When the taphole machine and / or the atomizing device start working, the control unit controls the cooling pipe valve of the bridge and the cooling pipe valve of the mud gun foundation protection to open.

5. The blast furnace front cooling control system according to claim 1, characterized in that, The hydraulic mud gun is equipped with a barrel cooling device and a cooling control module. The cooling control module is electrically connected between the hydraulic mud gun and the control valve of the barrel cooling device. When the hydraulic mud gun starts the plugging operation, the cooling control module controls the control valve of the barrel cooling device to open. When the hydraulic mud gun finishes the plugging operation, the cooling control module controls the control valve of the barrel cooling device to close.

6. The blast furnace front cooling control system according to claim 5, characterized in that, The hydraulic mud gun is also equipped with a nozzle flushing device and a flushing control module. The flushing control module is electrically connected between the hydraulic mud gun and the control valve of the nozzle flushing device. When the hydraulic mud gun finishes the plugging operation, the flushing control module controls the control valve of the nozzle flushing device to open. After the preset flushing time is reached, the flushing control module controls the control valve of the nozzle flushing device to close.

7. The blast furnace front cooling control system according to claim 2, characterized in that, Multiple cooling water channels are connected in parallel within the bridge, and these channels can fully cover the bridge surface. When the taphole machine starts taphole operation, the first control module controls the valves of the cooling pipes of each cooling water channel to open; when the hydraulic mud gun finishes the taphole blocking operation, the first control module controls the valves of the cooling pipes of some of the cooling water channels to close.

8. The blast furnace front cooling control system according to claim 2, characterized in that, The bridge is equipped with an S-shaped cooling water channel that fully covers the bridge surface. The cooling water channel is equipped with an adjustable cooling pipe valve. When the taphole machine starts taphole operation, the first control module controls the cooling pipe valve to be fully open. When the hydraulic mud gun finishes the taphole blocking operation, the first control module controls the cooling pipe valve of the cooling water channel to be partially open.

9. A method for controlling cooling at the front of a blast furnace, characterized in that, The blast furnace front cooling control method is implemented using the blast furnace front cooling control system as described in any one of claims 1 to 8, including: Obtain the start signal for the tapping operation of the tapping machine; After receiving the tapping machine's tapping start signal, the control unit controls the opening of the cooling pipe valves of the bridge and the cooling pipe valves of the mud gun foundation protection based on the tapping machine's tapping start signal. Obtain the shutdown signal for the plugging operation of the hydraulic mud gun; After receiving the shutdown signal for the plugging operation of the hydraulic mud gun, the control unit controls the cooling pipe valve of the bridge to close partially, and controls the cooling pipe valve of the mud gun foundation protection to close, based on the shutdown signal for the hydraulic mud gun.

10. The blast furnace front cooling control method according to claim 9, characterized in that, When the feed motor of the taphole machine starts feeding, the taphole machine sends a taphole start signal to the control unit; when the hydraulic mud gun's rotating cylinder holds pressure for a preset time, the hydraulic mud gun sends a taphole stop signal to the control unit.

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