A method for stopping a blast furnace and a spray gun device for anatomical research of a blast furnace

Abstract

The present invention relates to the technical field of blast furnace shutdown, and discloses a shutdown method and spray gun device for blast furnace anatomy research, which include the following steps: preparation, reduction of raw material and fuel supply, stopping feeding, cooling and cooling, and shutdown. In the present invention, the cooling medium conveying steel pipe drives the diverter hood to rotate, and the diverter hood drives the three nozzles at the bottom to rotate, and the cooling medium sprayed by the nozzle cools the surrounding of the blast furnace, and the diverter hood drives the displacement unit to move, and the diverter hood drives the sliding rod to slide in a plurality of pairs of n-shaped displacement grooves, driving the diverter hood to move left and right, thereby changing the horizontal position of the nozzle, increasing the spraying range, and after the diverter hood moves, it drives the deflection unit to move, and the hollow connecting plate and the top rod installed on the nozzle slide on the guide plate, and the guide plate is provided with a slope top and a valley bottom, driving the angle of the hollow connecting plate to change, so that the angle of the nozzle changes, further increasing the spraying range, and generally ensuring that the temperature in the furnace can be evenly reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of blast furnace shutdown, and in particular relates to a shutdown method and a spray gun device for blast furnace anatomy research. Background Art

[0002] By dissecting a blast furnace, we can understand the shape, proportion and distribution of the charge structure in the blast furnace to the greatest extent, and understand and master the changes of charge elements in the furnace with the operating status. By properly stopping the blast furnace, the original state of each section of the blast furnace charge can be retained to the greatest extent, including the blocky zone, soft melting zone, hearth dead material column, tuyere whirlpool area, dead iron layer and hearth erosion shape. In-depth research can be conducted on the radial changes of coke melting loss in the blast furnace, the distribution of harmful elements and the impact on charge, cooling wall, refractory materials, etc.

[0003] When conducting an anatomical study on a blast furnace, the operator needs to shut down the entire blast furnace. In the later stage of the shutdown operation, the operator needs to spray cooling medium, which helps to lower the temperature inside the blast furnace. However, the current spray gun equipment for spraying cooling medium is always located at the center of the furnace top. It is difficult to spray cooling medium at all positions through a fixed-angle spray gun, which leads to uneven cooling. In severe cases, furnace explosion may occur.

[0004] In view of this, the present invention is proposed. Summary of the invention

[0005] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0006] A method for stopping a blast furnace for anatomical research comprises the following steps:

[0007] Step 1: Preparation: determine the time when the blast furnace will be shut down, prepare the necessary equipment in advance, install the installation unit in the spray gun device on the top of the blast furnace, and record the current temperature and pressure in the blast furnace;

[0008] Step 2: Reduce the supply of raw materials and fuels. Reduce the supply of ore, coke and other raw materials in the blast furnace, so that the remaining materials in the blast furnace gradually decrease. In the process of reducing the supply, gradually reduce the air supply volume to ensure that the temperature and pressure in the blast furnace drop steadily;

[0009] Step 3: Stop feeding. When the amount of remaining materials in the blast furnace reaches the predetermined safety value, completely stop the supply of raw materials and fuel, continue to reduce the air supply, and adjust the air supply in time according to the temperature and pressure changes in the blast furnace to ensure that the materials in the blast furnace are fully burned;

[0010] Step 4: Cooling down. After stopping the air supply, the blast furnace spray gun is turned on. The rotating spray unit of the spray gun device drives the cooling medium conveying steel pipe to rotate, and the cooling medium conveying steel pipe drives the slidingly connected diverter hood to rotate. The diverter hood drives the three nozzles at the bottom to rotate. The cooling medium sprayed by the nozzle cools down the surrounding of the blast furnace, and the diverter hood drives the shifting unit to move. The diverter hood drives the sliding rod to slide in several pairs of n-shaped shifting grooves, drives the diverter hood to move left and right, thereby changing the horizontal position of the nozzle, increasing the spraying range, and the diverter hood drives the deflection unit to move after moving left and right. The hollow connecting plate and the top rod installed on the nozzle slide on the guide plate, and the guide plate is provided with a slope top and a valley bottom, thereby driving the angle of the hollow connecting plate to change, so that the angle of the nozzle changes, further increasing the spraying range, and generally ensuring that the temperature in the furnace can be evenly reduced;

[0011] Step 5: Stop the furnace and monitor the changes in blast furnace temperature to ensure a smooth cooling process until the temperature inside the blast furnace drops to a safe value.

[0012] The present invention also discloses a spray gun device for blast furnace anatomy research, comprising a mounting unit, a rotary spray unit, a shift unit and a deflection unit;

[0013] The installation unit comprises a base, the base and the blast furnace roof are connected to each other, a protective cover is rotatably connected to the base, a cover plate is installed on the protective cover, and a notch is opened on the cover plate;

[0014] The rotary spraying unit comprises a driving motor, which is mounted on an outer bracket, and a driving gear is mounted on the output end of the driving motor, a driven gear is meshed with the side wall of the driving gear, a cooling medium conveying steel pipe is mounted on the rotating center of the driven gear, a flow divider is slidably mounted on the end of the cooling medium conveying steel pipe, the flow divider is inserted in the notch, three goose-shaped tubes are connected to the bottom of the flow divider, and a spray head is connected to the bottom of each goose-shaped tube;

[0015] The displacement unit comprises a displacement plate, the displacement plate is mounted on a base, a combination groove is formed by connecting an odd number of n-shaped displacement grooves, and the odd number of n-shaped displacement grooves form an annular groove, a pair of sliding rods slide inside the combination groove, and the sliding rods and the diverter cover are connected to each other;

[0016] The deflection unit includes a hollow connecting plate, which is interconnected with the nozzle housing. Two top rods are installed on the hollow connecting plates. The two top rods slide on two guide plates installed at the bottom of the cover plate, and the two guide plates are provided with a plurality of pairs of slope tops and valley bottoms. The slope tops and valley bottoms are connected end to end, and the slope tops and valley bottoms on two different guide plates correspond horizontally.

[0017] As a preferred embodiment of the present invention, a positioning plate is installed on the base, the positioning plate is attached to the top of the blast furnace, and a positioning hole is opened on the positioning plate, and bolts are screwed and installed between the positioning hole and the top of the blast furnace, and a slide rail is installed on the base, and the slide rail and the protective cover are slidably connected.

[0018] As a preferred embodiment of the present invention, a bearing seat is welded at the center position of the base, a bearing is clamped inside the bearing seat, the bearing housing and the cooling medium conveying steel pipe are connected to each other, a connecting rod is installed on the side wall of the cooling medium conveying steel pipe, and the connecting rod and the side wall of the protective cover are connected to each other.

[0019] As a preferred embodiment of the present invention, a collar is provided on the outer wall of the cooling medium conveying steel pipe, a locking bolt is screwed through the side wall of the collar, and the end of the locking bolt is tightly fitted with the side wall of the cooling medium conveying steel pipe, the collar and the rotation center of the driven gear are connected to each other, and the collar and the cooling medium conveying steel pipe are movably connected to the top of the blast furnace.

[0020] As a preferred embodiment of the present invention, a through hole is opened inside the diverter hood, a sealing cavity is opened on the side wall of the through hole, a sealing plate is slid inside the sealing cavity, and the length of the sealing plate is the same as the general length of the sealing cavity, and a cooling medium conveying steel pipe is installed inside the sealing plate, a diverter baffle is installed at the center of the diverter hood, and partitions are installed on the inner wall of the diverter hood located on both sides of the diverter baffle.

[0021] As a preferred embodiment of the present invention, side panels are installed on both sides of the notch, and a slide plate is installed on the side wall of the diversion cover. The slide plate and the side panels are slidably connected, and the slide plate moves through the side wall of the protective cover, and a limit plate is installed at the end of the slide plate, and the limit plate is placed on the outside of the cover plate.

[0022] As a preferred embodiment of the present invention, a pair of fixed seats are installed on the side wall of the protective cover, guide rods are installed on the pair of fixed seats, a pair of sliding seats are slidably arranged on the guide rods, and the sliding seats are installed on the side wall of the diversion cover, a return spring is sleeved on the guide rods, one end of the return spring is connected to the fixed seat, and the other end of the return spring is connected to the sliding seat.

[0023] As a preferred embodiment of the present invention, a mounting seat is installed on the side walls of the diverter hood located on both sides of the nozzle, and a rotating shaft is movably installed inside the mounting seat. The rotating shaft and the side wall of the nozzle are connected to each other, and a torsion spring is sleeved on the rotating shaft, and the two ends of the torsion spring are respectively clamped on the side wall of the nozzle and the side wall of the mounting seat, and the rotating shaft is connected to the hollow connecting plate.

[0024] As a preferred embodiment of the present invention, a mounting plate is provided on the side wall of the guide plate, the mounting plate and the cover plate are connected to each other, a guide ball is installed at the end of the push rod, and the guide ball is rollingly installed on the guide plate.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] By setting a rotating spraying unit, a shifting unit and a deflecting unit, the rotating spraying unit drives the cooling medium conveying steel pipe to rotate, and the cooling medium conveying steel pipe drives the slidingly connected diverter hood to rotate, the diverter hood drives the three nozzles at the bottom to rotate, and the cooling medium sprayed by the nozzle cools down the surrounding of the blast furnace, and the diverter hood drives the shifting unit to move, the diverter hood drives the sliding rod to slide in several pairs of n-shaped shifting grooves, drives the diverter hood to move left and right, thereby changing the horizontal position of the nozzle, increasing the spraying range, and after the diverter hood moves left and right, it drives the deflection unit to move, the hollow connecting plate and the top rod installed on the nozzle slide on the guide plate, and the guide plate is provided with a slope top and a valley bottom, thereby driving the angle of the hollow connecting plate to change, so that the angle of the nozzle changes, further increasing the spraying range, reducing dead angles, and generally ensuring that the temperature in the furnace can be evenly reduced.

[0027] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In the attached picture:

[0029] Figure 1 A schematic diagram of the three-dimensional structure of a spray gun device for blast furnace anatomy research;

[0030] Figure 2 This is a schematic diagram of the front structure of a spray gun device for blast furnace anatomy research;

[0031] Figure 3 A bottom view of a blast furnace anatomical research lance device (I);

[0032] Figure 4 A spray gun device for blast furnace anatomy research Figure 3 Enlarged view of point A in the middle;

[0033] Figure 5 A bottom view of a lance device for blast furnace anatomy research (II);

[0034] Figure 6 It is a schematic diagram of the structure of a spray gun device for blast furnace anatomy research after the guide plate is removed;

[0035] Figure 7 It is a cross-sectional view of the cover plate of a spray gun device used for blast furnace anatomy research;

[0036] Figure 8 A spray gun device for blast furnace anatomy research Figure 7 Enlarged view of point B in the middle;

[0037] Fig. 9 This is a schematic diagram of the structure of a spray gun device for blast furnace anatomy research after the cover plate is removed;

[0038] Fig.10 It is a cross-sectional view of a blast furnace anatomy research spray gun device at the flow distribution cover;

[0039] Fig.11 A spray gun device for blast furnace anatomy research Fig.10 Enlarged view of point C in the middle;

[0040] Fig.12 The figure is a schematic diagram of the displacement unit structure of a spray gun device used for blast furnace anatomy research.

[0041] In the figure:

[0042] 100, mounting unit; 101, positioning plate; 1011, positioning hole; 102, base; 1021, slide rail; 103, protective cover; 1031, cover plate; 1032, notch; 1033, connecting rod; 104, bearing seat; 1041, bearing;

[0043] 200, rotary spray unit; 201, driving motor; 2011, driving gear; 2012, driven gear; 2013, collar; 2014, locking bolt; 202, cooling medium conveying steel pipe; 2021, sealing plate; 203, flow divider; 2031, through hole; 2032, sealing chamber; 2033, flow divider baffle; 2034, baffle; 204, nozzle; 2041, goose-shaped tube; 205, slide plate; 2051, limit plate; 2052, side plate; 206, fixed seat; 2061, guide rod; 2062, slide seat; 2063, reset spring;

[0044] 300, shift unit; 301, shift plate; 302, combination slot; 3021, n-shaped shift slot; 3022, slide bar;

[0045] 400, deflection unit; 401, mounting seat; 4011, rotating shaft; 4012, torsion spring; 402, hollow connecting plate; 4021, push rod; 4022, guide ball; 403, guide plate; 4031, mounting plate; 404, slope top; 4041, valley bottom. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention.

[0047] Embodiment 1:

[0048] like Figures 1 to 12 As shown, a shutdown method for blast furnace anatomy research comprises the following steps:

[0049] Step 1: Preparation work, determine the time when the blast furnace is about to be shut down, prepare the required equipment in advance, install the installation unit 100 in the spray gun device on the top of the blast furnace, and record the current temperature and pressure in the blast furnace;

[0050] Step 2: Reduce the supply of raw materials and fuels. Reduce the supply of ore, coke and other raw materials in the blast furnace, so that the remaining materials in the blast furnace gradually decrease. In the process of reducing the supply, gradually reduce the air supply volume to ensure that the temperature and pressure in the blast furnace drop steadily;

[0051] Step 3: Stop feeding. When the amount of remaining materials in the blast furnace reaches the predetermined safety value, completely stop the supply of raw materials and fuel, continue to reduce the air supply, and adjust the air supply in time according to the temperature and pressure changes in the blast furnace to ensure that the materials in the blast furnace are fully burned;

[0052] Step 4: Cooling down. After stopping the air supply, the blast furnace spray gun is turned on. The rotating spray unit 200 of the spray gun device drives the cooling medium conveying steel pipe 202 to rotate, and the cooling medium conveying steel pipe 202 drives the slidingly connected diverter hood 203 to rotate. The diverter hood 203 drives the three nozzles 204 at the bottom to rotate. The cooling medium sprayed by the nozzle 204 cools down the surrounding of the blast furnace, and the diverter hood 203 drives the shift unit 300 to move. The diverter hood 203 drives the slide bar 3022 to slide in a plurality of pairs of n-shaped shift grooves 3021. The diverter hood 203 is driven to move left and right, thereby changing the horizontal position of the nozzle 204, increasing the spray range, and the diverter hood 203 moves left and right, driving the deflection unit to move, and the hollow connecting plate 402 and the top rod 4021 installed on the nozzle 204 slide on the guide plate 403, and the guide plate 403 is provided with a slope top 404 and a valley bottom 4041, thereby driving the angle of the hollow connecting plate 402 to change, so that the angle of the nozzle 204 changes, further increasing the spray range, and generally ensuring the uniform reduction of the temperature in the furnace;

[0053] Step 5: Stop the furnace and monitor the changes in blast furnace temperature to ensure a smooth cooling process until the temperature inside the blast furnace drops to a safe value.

[0054] The present invention also discloses a spray gun device for blast furnace anatomy research, comprising a mounting unit 100, a rotating spray unit 200, a shift unit 300 and a deflection unit 400, as shown in FIG. Figures 1 to 12As shown, the installation unit 100 includes a base 102, the base 102 and the blast furnace roof are connected to each other, a protective cover 103 is rotatably connected to the base 102, a cover plate 1031 is installed on the protective cover 103, and a notch 1032 is opened on the cover plate 1031; the installation operation is completed through the base 102.

[0055] The rotary spraying unit 200 includes a driving motor 201, which is mounted on an outer bracket, and a driving gear 2011 is mounted on the output end of the driving motor 201, and a driven gear 2012 is meshed with the side wall of the driving gear 2011, and a cooling medium conveying steel pipe 202 is mounted on the rotating center of the driven gear 2012, and a diverter hood 203 is slidably arranged at the end of the cooling medium conveying steel pipe 202, and the diverter hood 203 is inserted in the notch 1032, and the bottom of the diverter hood 203 is connected to three goose-shaped Tube 2041, and a nozzle 204 is connected to the bottom of each goose-shaped tube 2041; wherein the driving motor 201 drives the driving gear 2011 to rotate, and then drives the meshing driven gear 2012 to rotate, and the driven gear 2012 drives the cooling medium conveying steel pipe 202 to rotate, and the cooling medium conveying steel pipe 202 drives the slidingly connected diverter hood 203 to rotate, and the diverter hood 203 drives the three nozzles 204 at the bottom to rotate, and the cooling medium sprayed by the nozzle 204 cools down the surroundings of the blast furnace.

[0056] The shift unit 300 includes a shift plate 301, which is installed on the base 102. A combination groove 302 is opened on the shift plate 301. The combination groove 302 is formed by connecting an odd number of n-shaped shift grooves 3021, and the odd number of n-shaped shift grooves 3021 form an annular groove. A pair of sliding rods 3022 slide inside the combination groove 302, and the sliding rods 3022 and the diverter hood 203 are connected to each other; during the rotation of the diverter hood 203, the diverter hood 203 drives the sliding rods 3022 to slide in several pairs of n-shaped shift grooves 3021, driving the diverter hood 203 to move left and right, thereby changing the horizontal position of the nozzle 204 and increasing the spraying range.

[0057] The deflection unit 400 includes a hollow connecting plate 402, which is interconnected with the outer shell of the nozzle 204. Two top rods 4021 are installed on the hollow connecting plate 402. The two top rods 4021 slide on two guide plates 403 installed at the bottom of the cover plate 1031, and the two guide plates 403 are provided with a plurality of pairs of slope tops 404 and valley bottoms 4041. The slope tops 404 and valley bottoms 4041 are connected end to end, and the slope tops 404 and valley bottoms 4041 on two different guide plates 403 correspond horizontally. After the diversion hood 203 moves left and right, it drives the deflection unit 400 to move. The hollow connecting plate 402 and the top rod 4021 installed on the nozzle 204 slide on the guide plate 403, and the guide plate 403 is provided with a slope top 404 and a valley bottom 4041, which drives the angle of the hollow connecting plate 402 to change, so that the angle of the nozzle 204 changes, further increases the spraying range, and generally ensures that the temperature in the furnace is uniformly reduced.

[0058] like Figures 1 to 12 As shown, further, a positioning plate 101 is installed on the base 102, the positioning plate 101 is attached to the blast furnace roof, and a positioning hole 1011 is opened on the positioning plate 101, and bolts are screwed and installed between the positioning hole 1011 and the blast furnace roof, and a slide rail 1021 is installed on the base 102, and the slide rail 1021 is slidably connected with the protective cover 103. The positioning plate 101 and the blast furnace roof are in contact with each other, and the positioning plate 101 and the blast furnace roof are installed by bolts. A bearing seat 104 is welded at the center of the base 102, and a bearing 1041 is clamped inside the bearing seat 104. The outer shell of the bearing 1041 and the cooling medium conveying steel pipe 202 are connected to each other, and a connecting rod 1033 is installed on the side wall of the cooling medium conveying steel pipe 202. The connecting rod 1033 and the side wall of the protective cover 103 are connected to each other, and the cooling medium conveying steel pipe 202 can rotate inside the bearing 1041, reducing friction.

[0059] Embodiment 2:

[0060] The difference between the above embodiment and this embodiment is that: Figures 1 to 12 As shown, the outer wall of the cooling medium conveying steel pipe 202 is sleeved with a collar 2013, and the side wall of the collar 2013 is screwed and installed with a locking bolt 2014, and the end of the locking bolt 2014 is tightly fitted with the side wall of the cooling medium conveying steel pipe 202, the collar 2013 and the rotation center of the driven gear 2012 are connected to each other, and the collar 2013 and the cooling medium conveying steel pipe 202 are movable through the blast furnace roof. The collar 2013 on the driven gear 2012 is sleeved on the cooling medium conveying steel pipe 202, and the collar 2013 and the cooling medium conveying steel pipe 202 are connected as a whole through the locking bolt 2014.

[0061] like Figures 1 to 12As shown, in a specific embodiment, a through hole 2031 is provided inside the flow divider 203, a sealed cavity 2032 is provided on the side wall of the through hole 2031, a sealing plate 2021 is slidably provided inside the sealed cavity 2032, and the length of the sealing plate 2021 is the same as the general length of the sealed cavity 2032, and a cooling medium conveying steel pipe 202 is installed inside the sealing plate 2021, and during the movement of the flow divider 203 left and right, the sealing plate 2021 slides inside the sealed cavity 2032, thereby ensuring the sealing of the flow divider 203. A flow divider baffle 2033 is installed at the center of the flow divider 203, and baffles 2034 are installed on the inner wall of the flow divider 203 on both sides of the flow divider baffle 2033. Through the blocking effect of the flow divider baffle 2033 and the baffle 2034, the cooling medium can be evenly dispersed to various positions of the flow divider 203.

[0062] like Figures 1 to 12 As shown, further, side plates 2052 are installed on both sides of the notch 1032, and a slide plate 205 is installed on the side wall of the diverter cover 203. The slide plate 205 and the side plates 2052 are slidably connected, and the slide plate 205 movably penetrates the side wall of the protective cover 103, and a limit plate 2051 is installed at the end of the slide plate 205, and the limit plate 2051 is placed on the outside of the cover plate 1031. During the sliding process of the diverter cover 203, the slide plate 205 of the side wall slides on the side plate 2052 installed on the surface of the notch 1032, and the internal chamber of the protective cover 103 will not be connected to the outside through the installed side plate 2052, which plays a protective role, and the limit plate 2051 at the end of the side plate 2052 plays a limiting purpose.

[0063] Embodiment 3:

[0064] The difference between the above embodiment and this embodiment is that: Figures 1 to 12 As shown, a pair of fixed seats 206 are installed on the side wall of the protection cover 103, and a guide rod 2061 is installed on the pair of fixed seats 206. A pair of slide seats 2062 are slidably arranged on the guide rod 2061, and the slide seats 2062 are installed on the side wall of the diverter cover 203. A return spring 2063 is sleeved on the guide rod 2061. One end of the return spring 2063 is connected to the fixed seat 206, and the other end of the return spring 2063 is connected to the slide seat 2062. During the sliding process of the diverter cover 203, the slide seat 2062 of the side wall can slide on the guide rod 2061, and the slide seat 2062 can squeeze the return spring 2063 of the side wall, so that the return spring 2063 is convenient for the later reset operation.

[0065] like Figures 1 to 12As shown, in a specific embodiment, the side walls of the flow divider 203 located on both sides of the nozzle 204 are installed with a mounting seat 401, and a rotating shaft 4011 is installed inside the mounting seat 401, and the rotating shaft 4011 and the side wall of the nozzle 204 are connected to each other, and a torsion spring 4012 is sleeved on the rotating shaft 4011, and the two ends of the torsion spring 4012 are respectively clamped on the side wall of the nozzle 204 and the side wall of the mounting seat 401, and the rotating shaft 4011 is connected to the hollow connecting plate 402. The side wall of the guide plate 403 is provided with a mounting plate 4031, and the mounting plate 4031 and the cover plate 1031 are connected to each other, and a guide ball 4022 is installed at the end of the top rod 4021, and the guide ball 4022 is rollingly installed on the guide plate 403. During the movement of the nozzle 204 and the diverter hood 203, the hollow connecting plate 402 on the side wall of the nozzle 204 moves synchronously, and the top rod 4021 on the hollow connecting plate 402 slides on the guide plate 403. The two guide plates 403 are respectively provided with a slope top 404 and a valley bottom 4041, and the positions are different. Then, the top rod 4021 is driven to deflect through the different slope tops 404 and valley bottoms 4041, and then the angle of the hollow connecting plate 402 changes, pulling the nozzle 204 to swing, thereby achieving the purpose of adjusting the nozzle position and further improving the spraying range. The hollow connecting plate 402 can drive the nozzle 204 to change its angle through the rotating shaft 4011, and can also twist the torsion spring 4012, so that the torsion spring 4012 is convenient for the later resetting operation.

[0066] The implementation principle of the spray gun device of a blast furnace dissection research shutdown method of the present embodiment is as follows:

[0067] First, the spray gun needs to be installed as a whole on the blast furnace roof, and the positioning plate 101 and the blast furnace roof are in contact with each other, and the positioning plate 101 and the blast furnace roof are installed by bolts, and then the driving gear 2011 and the driven gear 2012 are installed, and the housing of the driving motor 201 is installed on the external connecting part, and the ring 2013 on the driven gear 2012 is put on the cooling medium conveying steel pipe 202, and the ring 2013 and the cooling medium conveying steel pipe 202 are connected as a whole by the locking bolt 2014.

[0068] Then, the cooling medium is transported to the cooling medium transport steel pipe 202 through the external structure, and the cooling medium transport steel pipe 202 transports the cooling medium to the diverter hood 203, and transports the cooling medium to the nozzle 204 through the goose-shaped pipe 2041 on the diverter hood 203, and the cooling medium is sprayed out through the nozzle 204, thereby achieving the purpose of cooling.

[0069] Then the operator starts the driving motor 201, and the driving motor 201 drives the driving gear 2011 to rotate, and then drives the meshing driven gear 2012 to rotate, and the driven gear 2012 drives the cooling medium conveying steel pipe 202 to rotate in the bearing seat 104. Finally, the cooling medium conveying steel pipe 202 starts to rotate synchronously and conveys the cooling medium to the inside of the diverter hood 203. Through the blocking effect of the diverter baffle 2033 and the partition 2034, the cooling medium can be evenly dispersed to various positions of the diverter hood 203, transported outwards through the goose-shaped pipe 2041, and begins to spray outwards through the nozzle 204, thereby achieving the purpose of cooling.

[0070] During the rotation of the cooling medium conveying steel pipe 202, the cooling medium conveying steel pipe 202 drives the protective cover 103 to rotate through the connecting rod 1033. At this time, the protective cover 103 and the diverter cover 203 rotate synchronously. The slide bar 3022 on the diverter cover 203 can slide on the n-shaped shift groove 3021, and the n-shaped shift groove 3021 is fixed. Then, the slide bar 3022 rotates along the n-shaped shift groove 3021, so that the slide bar 3022 moves back and forth as a whole. The slide bar 3022 drives the diverter cover 203 to slide, which can change the position of the nozzle 204, thereby increasing the spraying range.

[0071] During the sliding of the splitter cover 203 , the slide seat 2062 of the side wall can slide on the guide rod 2061 , and the slide seat 2062 can squeeze the return spring 2063 of the side wall, so that the return spring 2063 is convenient for the subsequent return operation.

[0072] During the sliding of the diverter cover 203, the slide plate 205 of the side wall slides on the side plate 2052 installed on the surface of the notch 1032. The installed side plate 2052 including the internal chamber of the protective cover 103 will not be connected to the outside world, thereby playing a protective role, and the limiting plate 2051 at the end of the side plate 2052 serves the purpose of limiting.

[0073] During the movement of the nozzle 204 and the diverter hood 203, the hollow connecting plate 402 on the side wall of the nozzle 204 moves synchronously, and the top rod 4021 on the hollow connecting plate 402 slides on the guide plate 403. The two guide plates 403 are respectively provided with a slope top 404 and a valley bottom 4041, and the positions are different. Then, the top rod 4021 is driven to deflect through the different slope tops 404 and valley bottoms 4041, and then the angle of the hollow connecting plate 402 changes, pulling the nozzle 204 to swing, thereby achieving the purpose of adjusting the nozzle position and further improving the spraying range. The hollow connecting plate 402 can drive the nozzle 204 to change its angle through the rotating shaft 4011, and can also twist the torsion spring 4012, so that the torsion spring 4012 is convenient for the later resetting operation.

Claims

1. A method for stopping a blast furnace for anatomical research, characterized in that: The following steps are involved: Step 1: Preparation work, determining the time when the blast furnace is about to be shut down, preparing the necessary equipment in advance, installing the installation unit (100) in the spray gun device on the top of the blast furnace, and recording the current temperature and pressure in the blast furnace; Step 2: Reduce the supply of raw materials and fuels. Reduce the supply of ore, coke and other raw materials in the blast furnace, so that the remaining materials in the blast furnace gradually decrease. In the process of reducing the supply, gradually reduce the air supply volume to ensure that the temperature and pressure in the blast furnace drop steadily; Step 3: Stop feeding. When the amount of remaining materials in the blast furnace reaches the predetermined safety value, completely stop the supply of raw materials and fuel, continue to reduce the air supply, and adjust the air supply in time according to the temperature and pressure changes in the blast furnace to ensure that the materials in the blast furnace are fully burned; Step 4: Cooling down. After stopping the air supply, the blast furnace spray gun is turned on. The rotating spray unit (200) of the spray gun device drives the cooling medium conveying steel pipe (202) to rotate, and the cooling medium conveying steel pipe (202) drives the slidingly connected diverter hood (203) to rotate. The diverter hood (203) drives the three nozzles (204) at the bottom to rotate. The cooling medium sprayed by the nozzles (204) cools down the surrounding areas of the blast furnace. The diverter hood (203) drives the shifting unit (300) to move. The diverter hood (203) drives the sliding rod (3022) to slide in a plurality of pairs of n-shaped shifting grooves (3021). The diverter hood (203) is driven to move left and right, thereby causing the horizontal position of the nozzle (204) to change, thereby increasing the spray range. After the diverter hood (203) moves left and right, it drives the deflection unit to move. The hollow connecting plate (402) and the top rod (4021) installed on the nozzle (204) slide on the guide plate (403). The guide plate (403) is provided with a slope top (404) and a valley bottom (4041). This drives the angle of the hollow connecting plate (402) to change, thereby causing the angle of the nozzle (204) to change, thereby further increasing the spray range, and generally ensuring that the temperature in the furnace is uniformly reduced. Step 5: Stop the furnace and monitor the changes in blast furnace temperature to ensure a smooth cooling process until the temperature inside the blast furnace drops to a safe value.

2. A spray gun device for blast furnace anatomy research, characterized in that: It comprises a mounting unit (100), a rotary spraying unit (200), a displacement unit (300) and a deflection unit (400); The installation unit (100) comprises a base (102), the base (102) and the blast furnace roof are connected to each other, a protective cover (103) is rotatably connected to the base (102), a cover plate (1031) is installed on the protective cover (103), and a notch (1032) is opened on the cover plate (1031); The rotary spraying unit (200) comprises a driving motor (201), the driving motor (201) being mounted on an external bracket, and a driving gear (2011) being mounted on the output end of the driving motor (201), a driven gear (2012) being meshedly mounted on the side wall of the driving gear (2011), a cooling medium conveying steel pipe (202) being mounted at the rotation center of the driven gear (2012), a flow divider (203) being slidably mounted on the end of the cooling medium conveying steel pipe (202), the flow divider (203) being inserted into the notch (1032), three goose-shaped tubes (2041) being connected to the bottom of the flow divider (203), and a spray head (204) being connected to the bottom of each goose-shaped tube (2041); The displacement unit (300) comprises a displacement plate (301), the displacement plate (301) being mounted on a base (102), the displacement plate (301) being provided with a combination groove (302), the combination groove (302) being formed by connecting an odd number of n-shaped displacement grooves (3021), and the odd number of n-shaped displacement grooves (3021) forming an annular groove, a pair of sliding rods (3022) sliding inside the combination groove (302), and the sliding rods (3022) and the diverter cover (203) being connected to each other; The deflection unit (400) comprises a hollow connecting plate (402), wherein the hollow connecting plate (402) is connected to the outer shell of the nozzle (204), and top rods (4021) are installed on both sides of the hollow connecting plate (402), and the two top rods (4021) are slid on two guide plates (403) installed at the bottom of the cover plate (1031), and the two guide plates (403) are provided with a plurality of pairs of slope tops (404) and valley bottoms (4041), and the slope tops (404) and valley bottoms (4041) are connected end to end, and the slope tops (404) and valley bottoms (4041) on two different guide plates (403) correspond horizontally.

3. A spray gun device for blast furnace anatomy research according to claim 2, characterized in that: A positioning plate (101) is installed on the base (102), the positioning plate (101) is attached to the top of the blast furnace, a positioning hole (1011) is opened on the positioning plate (101), and bolts are screwed and installed between the positioning hole (1011) and the top of the blast furnace, and a slide rail (1021) is installed on the base (102), and the slide rail (1021) and the protective cover (103) are slidably connected.

4. A spray gun device for blast furnace anatomy research according to claim 2, characterized in that: A bearing seat (104) is welded at the center of the base (102), a bearing (1041) is clamped inside the bearing seat (104), the outer shell of the bearing (1041) and the cooling medium conveying steel pipe (202) are connected to each other, a connecting rod (1033) is installed on the side wall of the cooling medium conveying steel pipe (202), and the connecting rod (1033) and the side wall of the protective cover (103) are connected to each other.

5. The spray gun device for blast furnace anatomy research according to claim 2, characterized in that: The outer wall of the cooling medium conveying steel pipe (202) is sleeved with a collar (2013), the side wall of the collar (2013) is threadedly installed with a locking bolt (2014), and the end of the locking bolt (2014) is tightly fitted with the side wall of the cooling medium conveying steel pipe (202), the collar (2013) and the rotation center of the driven gear (2012) are connected to each other, and the collar (2013) and the cooling medium conveying steel pipe (202) are movably connected to the top of the blast furnace.

6. The spray gun device for blast furnace anatomy research according to claim 2, characterized in that: Side plates (2052) are installed on both sides of the notch (1032), and a slide plate (205) is installed on the side wall of the diversion cover (203). The slide plate (205) and the side plates (2052) are slidably connected, and the slide plate (205) movably penetrates the side wall of the protection cover (103), and a limit plate (2051) is installed at the end of the slide plate (205), and the limit plate (2051) is placed on the outside of the cover plate (1031).

7. The spray gun device for blast furnace anatomy research according to claim 2, characterized in that: A pair of fixed seats (206) are installed on the side wall of the protective cover (103), a guide rod (2061) is installed on the pair of fixed seats (206), a pair of slide seats (2062) are slidably arranged on the guide rods (2061), and the slide seats (2062) are installed on the side wall of the diversion cover (203), a return spring (2063) is sleeved on the guide rods (2061), one end of the return spring (2063) is connected to the fixed seat (206), and the other end of the return spring (2063) is connected to the slide seat (2062).

8. The spray gun device for blast furnace anatomy research according to claim 2, characterized in that: A mounting seat (401) is installed on the side walls of the flow divider (203) located on both sides of the nozzle (204); a rotating shaft (4011) is movably installed inside the mounting seat (401); the rotating shaft (4011) and the side wall of the nozzle (204) are connected to each other; a torsion spring (4012) is sleeved on the rotating shaft (4011); and two ends of the torsion spring (4012) are respectively clamped on the side wall of the nozzle (204) and the side wall of the mounting seat (401); and the rotating shaft (4011) and the hollow connecting plate (402) are connected.

9. The spray gun device for blast furnace anatomy research according to claim 2, characterized in that: The side wall of the guide plate (403) is provided with a mounting plate (4031), the mounting plate (4031) and the cover plate (1031) are connected to each other, and a guide ball (4022) is installed at the end of the top rod (4021), and the guide ball (4022) is rollingly installed on the guide plate (403).

Images