Water-cooling protection device for clay gun foundation

Abstract

The utility model discloses a water cooling protection device for a clay gun foundation, which relates to the technical field of cooling devices and comprises a protection device body, the protection device body is provided with a first end and a second end which are opposite to each other along the lengthwise extension direction of the protection device body, a cooling channel is formed in the protection device body, and the first end and the second end are communicated with each other. A first connector communicated with the cooling channel is arranged at the position close to the first end, a second connector communicated with the cooling channel is arranged at the position close to the second end, and the cooling channel extends from the first connector to the second connector in a reciprocating mode and can fully cover the interior of the protection device body. The water-cooling protection device for the clay gun foundation is arranged between the clay gun foundation and a casting house main channel, and the sectional area of a protection device body is not smaller than that of the clay gun foundation in the direction from the casting house main channel to the clay gun foundation. The water-cooling protection device can protect the clay gun foundation, so that the clay gun foundation is prevented from being cracked and damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of cooling devices, and particularly relates to a water-cooled protection device for a mud gun foundation. Background Art

[0002] At present, as an essential front-of-furnace device for blast furnace smelting operations, the function of the mud gun foundation is to quickly and accurately block the iron notch after the blast furnace taps molten iron, enabling the blast furnace to enter the next cycle of smelting operations. However, due to the layout requirements of the mud gun foundation, its foundation is generally very close to the main runner in the tapping yard. In some steel enterprises, in order to extend the service life of the main runner and increase the molten iron throughput, the main runner is widened, causing the mud gun foundation to coincide with the main runner retaining wall or even serve as the main runner retaining wall. However, since high-temperature molten iron passes through the main runner, the mud gun foundation is in a state of high-temperature baking for a long time, resulting in cracking and damage to the mud gun foundation.

[0003] Therefore, on the premise of not affecting the service life of the main runner, it is necessary to protect the mud gun foundation to ensure its stable operation. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a water-cooled protection device for a mud gun foundation, which solves the problem that in the prior art, the mud gun foundation is in a state of high-temperature baking for a long time, easily leading to cracking and damage of the foundation, thus affecting the stable operation of the mud gun foundation.

[0005] The above object of the utility model can be achieved by the following technical solutions:

[0006] The utility model provides a water-cooled protection device for a mud gun foundation, including a protection device body. Along the longitudinal extension direction of the protection device body, the protection device body has opposite first and second ends. A cooling channel is formed inside the protection device body. A first interface communicating with the cooling channel is provided near the first end, and a second interface communicating with the cooling channel is provided near the second end. The cooling channel extends reciprocally from the first interface to the second interface and can completely cover the inside of the protection device body. The water-cooled protection device for the mud gun foundation is arranged between the mud gun foundation and the main runner in the tapping yard. In the direction from the main runner in the tapping yard to the mud gun foundation, the cross-sectional area of the protection device body is not less than the cross-sectional area of the mud gun foundation.

[0007] Preferably, a refractory material layer is provided on the side of the protection device body close to the main runner in the tapping yard.

[0008] Preferably, the thickness of the refractory material layer is not less than 50 mm.

[0009] Furthermore, the refractory material layer is made of a refractory material with a maximum heat-resistant temperature of not less than 1100 °C.

[0010] Preferably, the cooling channel is arranged in an S shape, and the first interface and the second interface are arranged on the wall surface of the protection device body close to one side of the mud gun foundation.

[0011] Preferably, the first interface is a water inlet, the second interface is a water outlet, and the first interface is located below the second interface.

[0012] Specifically, the protection device body includes a closed body outer frame and a plurality of support partition plates connected between the top wall and the bottom wall of the body outer frame. One end of the support partition plate is connected to the side wall of the body outer frame, and there is a distance greater than zero between the other end of the support partition plate and the side wall of the body outer frame. One of the adjacent two support partition plates is connected to one side wall of the body outer frame close to the first interface, and the other of the adjacent two support partition plates is connected to the other side wall of the body outer frame close to the second interface.

[0013] Preferably, the longitudinal extension direction of the support partition plate is consistent with the extension direction of the main trough in the tapping yard.

[0014] Furthermore, at least two lifting lugs are provided on the body outer frame, and at least two of the lifting lugs are symmetrically arranged on both side walls of the body outer frame.

[0015] Furthermore, a plurality of support columns are arranged in the cooling channel, and the support columns are arranged at intervals along the flowing direction of the cooling water in the cooling channel.

[0016] The features and advantages of the present utility model are as follows: The water-cooled protection device for the mud gun foundation provided by the present utility model sets a protection device body with a cross-sectional area not less than that of the mud gun foundation from the main trough in the tapping yard to the mud gun foundation, and a cooling channel capable of completely covering the inside of the protection device body is arranged in the protection device body, so that the flowing path of the cooling water entering the cooling channel can completely cover the cross-section of the mud gun foundation along the extension direction of the main trough in the tapping yard, realizing the comprehensive and effective protection of the mud gun foundation by the water-cooled protection device, thereby avoiding the cracking and damage of the mud gun foundation and ensuring the stable operation of the mud gun equipment. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 It is the top view of the water-cooled protection device for the mud gun foundation provided in the embodiment of the present utility model;

[0019] Figure 2 The left view of the water-cooling protection device for the mud gun foundation provided in the embodiment of the present utility model;

[0020] Figure 3 The schematic diagram of the layout state of the water-cooling protection device for the mud gun foundation provided in the embodiment of the present utility model to protect the mud gun foundation.

[0021] Explanation of the reference numerals in the drawings:

[0022] 1. Water-cooling protection device;

[0023] 2. Mud gun foundation;

[0024] 3. Main trough of the tapping yard;

[0025] 10. Protection device body; 20. Cooling channel; 30. First interface; 40. Second interface; 50. Outer frame of the body; 60. Support partition; 70. Refractory material layer; 80. Support column; 90. Lifting lug. Specific implementation manners

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0027] As Figures 1 to 3 shown, the present utility model provides a water-cooling protection device 1 for a mud gun foundation 2, including a protection device body 10. Along the longitudinal extension direction of the protection device body 10, the protection device body 10 has opposite first and second ends. A cooling channel 20 is formed inside the protection device body 10. A first interface 30 communicating with the cooling channel 20 is provided near the first end, and a second interface 40 communicating with the cooling channel 20 is provided near the second end. The cooling channel 20 extends reciprocally from the first interface 30 to the second interface 40 and can completely cover the inside of the protection device body 10; the water-cooling protection device 1 for the mud gun foundation 2 is arranged between the mud gun foundation 2 and the main trough 3 of the tapping yard. In the direction from the main trough 3 of the tapping yard to the mud gun foundation 2, the cross-sectional area of the protection device body 10 is not less than the cross-sectional area of the mud gun foundation 2.

[0028] Specifically, as Figure 3As shown, the water-cooling protection device 1 for the mud gun foundation 2 is arranged between the mud gun foundation 2 and the main tapping trough 3 of the tapping yard, and is used to reduce the temperature transmitted from the main tapping trough 3 of the tapping yard to the mud gun foundation 2, so as to prevent the mud gun foundation 2 from being in a high-temperature baking state for a long time when there is high-temperature molten iron passing through the main tapping trough 3 of the tapping yard, thus preventing situations such as cracking and damage of the mud gun foundation 2, and further affecting the usability of the mud gun foundation 2. As Figure 1 and Figure 2 shown, the water-cooling protection device 1 includes a protection device body 10. The protection device body 10 has opposite first and second ends along its longitudinal extension direction. A cooling channel 20 for cooling water to flow through is formed in the protection device body 10. First interfaces 30 and second interfaces 40 are respectively arranged at both ends of the cooling channel 20. The first interfaces 30 and the second interfaces 40 are respectively arranged on the protection device body 10 near the first end and the second end. The cooling channel 20 extends reciprocally from the first interface 30 to the second interface 40 and can completely cover the inside of the protection device body 10. And in the direction from the main tapping trough 3 of the tapping yard to the mud gun foundation 2, the cross-sectional area of the protection device body 10 is not less than the cross-sectional area of the mud gun foundation 2. In this way, the flowing path of the cooling water entering the cooling channel 20 can completely cover the cross-section of the mud gun foundation 2 along the extension direction of the main tapping trough 3 of the tapping yard, so as to realize the comprehensive and effective protection of the mud gun foundation 2 by the water-cooling protection device 1. Among them, one of the first interfaces 30 and the second interfaces 40 is used to connect the water supply pipeline, and the other of the first interfaces 30 and the second interfaces 40 is used to connect the water discharge pipeline. Preferably, the water supply pipeline and the water discharge pipeline are connected through a water system. In this way, the cooling water flowing through the water-cooling protection device 1 and carrying heat is discharged into the water system through the water discharge pipeline for cooling, and flows back into the water-cooling protection device 1 through the water supply pipeline for recycling. In this embodiment, the first end and the second end of the protection device body 10 are arranged in sequence along the flowing direction of the molten iron in the main tapping trough 3 of the tapping yard.

[0029] According to an embodiment of the present invention, the cooling channel 20 is arranged in an S shape, and the first interfaces 30 and the second interfaces 40 are arranged on the wall surface of the protection device body 10 close to the mud gun foundation 2. Specifically, as Figure 1 shown, the cooling channel 20 extending reciprocally from the first interface 30 to the second interface 40 is arranged in an S shape, and the cooling water enters the cooling channel 20 and flows reciprocally between the first end and the second end of the protection device body 10 along the S-shaped path, so as to realize the full-coverage cooling of the protection device body 10 and ensure the cooling effect of the water-cooling protection device 1. As Figure 3 shown, in order to minimize the influence of the high-temperature molten iron in the main tapping trough 3 of the tapping yard on the water supply pipeline and the water discharge pipeline as much as possible, the first interfaces 30 and the second interfaces 40 are arranged on the wall surface of the protection device body 10 close to the mud gun foundation 2, so as to facilitate the protection of the water supply pipeline and the water discharge pipeline.

[0030] According to an embodiment of the present utility model, the first interface 30 is an inlet, the second interface 40 is an outlet, and the first interface 30 is located below the second interface 40. Specifically, as Figure 3 shown, to achieve a better cooling effect, according to the distribution that the temperature below is higher than that above between the main trough 3 of the tapping yard and the mud gun foundation 2, and the temperature behind the molten iron flow direction is higher than that in front, the first interface 30, which is close to the first end and located below, is set as the inlet, and the second interface 40, which is close to the second end and located above, is set as the outlet.

[0031] According to an embodiment of the present utility model, the protection device body 10 includes a closed body outer frame 50 and a plurality of support partitions 60 connected between the top wall and the bottom wall of the body outer frame 50. One end of the support partition 60 is connected to the side wall of the body outer frame 50, and there is a distance greater than zero between the other end of the support partition 60 and the side wall of the body outer frame 50. One of the adjacent two support partitions 60 is connected to one side wall of the body outer frame 50 close to the first interface 30, and the other of the adjacent two support partitions 60 is connected to the other side wall of the body outer frame 50 close to the second interface 40. Specifically, as Figure 1 shown, a plurality of support partitions 60 connected between the top wall and the bottom wall of the body outer frame 50 and sequentially and spacedly connected to the side wall on one side of the first end and the side wall on one side of the second end of the body outer frame 50 divide the inside of the body outer frame 50 into an S-shaped cooling channel 20. The end of the support partition 60 not connected to the side wall of the body outer frame 50 forms a commutation corner along the channel direction of the cooling channel 20. The cross-sectional width of the flow channel through which the cooling water flows through the commutation corner is the projection distance of the interval distance between the end of the support partition 60 not connected to the side wall of the body outer frame 50 and the side wall of the body outer frame 50 in the direction perpendicular to the commutation corner direction. Among them, the cross-section of the cooling channel 20 can be constant, that is, a plurality of support partitions 60 are evenly spaced in parallel in the body outer frame 50. In this case, the cross-sectional width of the commutation corner is the interval distance between the end of the support partition 60 not connected to the side wall of the body outer frame 50 and the side wall of the body outer frame 50; the cross-section of the cooling channel 20 can also be variable, specifically including the following two variable situations. One is that a plurality of support partitions 60 are parallel and spaced in the body outer frame 50 and the distances between adjacent two support partitions 60 arranged in sequence along the channel direction are not all equal. The other is that a plurality of support partitions 60 are spaced in the body outer frame 50 and there is an acute angle between adjacent two support partitions 60. Preferably, a plurality of support partitions 60 are spaced in the body outer frame 50 and there is an acute angle between adjacent two support partitions 60, and the acute angle is arranged near the second end. In this way, by controlling the flow rate of the cooling water during the reciprocating flow from the inlet to the outlet, the protection effect of the water-cooled protection device 1 on the mud gun foundation 2 is further improved.

[0032] Among them, the outer frame 50 of the main body can be directly made by welding steel plates, or can be made by welding steel plates in cooperation with section steels such as H-shaped steel, I-shaped steel, channel steel, etc. The present utility model does not limit this. In this embodiment, the support partition plate 60 connected between the top wall and the bottom wall of the outer frame 50 of the main body also has the function of supporting and strengthening the outer frame 50 of the main body.

[0033] According to an embodiment of the present utility model, in order to achieve better protection of the mud gun foundation, the longitudinal extension direction of the support partition plate 60 is consistent with the extension direction of the main trough 3 of the tapping yard, that is, while the cooling water entering the cooling channel 20 reciprocates between the first end and the second end of the protection device main body 10, it flows upward through the protection device main body 10. In this way, the cooling distribution of the water-cooled protection device 1 is adaptively matched with the temperature distribution between the main trough 3 of the tapping yard and the mud gun foundation 2.

[0034] According to an embodiment of the present utility model, as Figure 2 and Figure 3 shown, in order to ensure the safety and usability of the protection device main body 10 in a high-temperature baking environment, a refractory material layer 70 is provided on one side of the protection device main body 10 close to the main trough 3 of the tapping yard. Preferably, the refractory material layer 70 is covered on the wall surface of the protection device main body 10 close to the main trough 3 of the tapping yard by spraying.

[0035] Preferably, the thickness of the refractory material layer 70 is not less than 50 mm. During the use of the water-cooled protection device 1, the use condition of the refractory material layer 70 should be observed regularly so that the refractory material layer 70 can be sprayed and repaired in time when damage occurs.

[0036] Preferably, in order to ensure the heat resistance of the refractory material layer 70 in a high-temperature baking environment, the refractory material layer 70 is made of a refractory material with a maximum heat resistance temperature of not less than 1100 °C.

[0037] Exemplarily, the refractory material for making the refractory material layer 70 can adopt one of CMC-LW1100 and CMC-LW1600. The maximum service temperature of CMC-LW1100 is 1100 °C, and the density at 110 °C is 0.85 g / cm 3 ~1.1 g / cm 3 , the Al 2 O 3 content is not less than 28%, the SiO 2 content does not exceed 52%, and at an average temperature of 800 ± 25 °C, the thermal conductivity does not exceed 0.27 W / m·K; the maximum service temperature of CMC-LW1600 is 1600 °C, and the density at 110 °C is greater than 2.1 g / cm 3 , the Al 2 O 3 content is not less than 52%, and the SiO2 The content does not exceed 42%, and at an average temperature of 1000 °C, the thermal conductivity does not exceed 0.95 W / m·K.

[0038] According to an embodiment of the present utility model, in order to improve the structural strength of the water-cooled protection device 1, a plurality of support columns 80 are provided in the cooling channel 20. The support columns 80 are arranged at intervals along the flowing direction of the cooling water in the cooling channel 20 and are connected between the top wall and the bottom wall of the outer frame 50 of the body. Preferably, a round steel with a diameter smaller than that of the cooling channel 20 is used as the support column 80.

[0039] According to an embodiment of the present utility model, in order to facilitate the handling of the water-cooled protection device 1, at least two lifting lugs 90 are provided on the outer frame 50 of the body. The at least two lifting lugs 90 are symmetrically arranged on both side walls of the outer frame 50 of the body.

[0040] Based on the above description, the water-cooled protection device 1 provided by the embodiment of the present utility model for the mud gun foundation 2 is provided with a protection device body 10 whose cross-sectional area from the main trough 3 of the tapping yard to the mud gun foundation 2 is not less than the cross-sectional area of the mud gun foundation 2, and a cooling channel 20 capable of fully covering the inside of the protection device body 10 is arranged in the protection device body 10, so that the flowing path of the cooling water entering the cooling channel 20 can fully cover the cross-section of the mud gun foundation 2 along the extending direction of the main trough 3 of the tapping yard, realizing the comprehensive and effective protection of the mud gun foundation 2 by the water-cooled protection device 1, thereby avoiding the cracking and damage of the mud gun foundation 2 and ensuring the stable operation of the mud gun equipment; and a refractory material layer 70 is arranged on one side of the protection device body 10 close to the main trough 3 of the tapping yard, thereby ensuring the safety and usability of the protection device body 10 in a high-temperature baking environment.

[0041] The above are only several embodiments of the present utility model. Those skilled in the art can make various changes or modifications to the embodiments of the present utility model without departing from the spirit and scope of the present utility model according to the content disclosed in the application documents.

Claims

1. A water-cooling protective device for a mud gun foundation, characterized in that: The protective device comprises a protective device body, wherein the protective device body has a first end and a second end opposite to each other in the longitudinal extension direction of the protective device body, a cooling channel is formed in the protective device body, a first interface connected to the cooling channel is arranged near the first end, and a second interface connected to the cooling channel is arranged near the second end, and the cooling channel reciprocates from the first interface to the second interface to fully cover the interior of the protective device body; The water-cooled protective device for the mud gun foundation is arranged between the mud gun foundation and the main ditch of the iron casting yard. In the direction from the main ditch of the iron casting yard to the mud gun foundation, the cross-sectional area of ​​the protective device body is not less than the cross-sectional area of ​​the mud gun foundation.

2. The water-cooling protective device for mud gun foundation according to claim 1 is characterized in that: A refractory material layer is provided on one side of the protective device body close to the main groove of the iron-making yard.

3. The water-cooling protective device for mud gun foundation according to claim 2 is characterized in that: The thickness of the refractory material layer is not less than 50 mm.

4. The water-cooling protective device for mud gun foundation according to claim 3 is characterized in that: The refractory material layer is made of refractory material with a maximum heat-resistant temperature of not less than 1100°C.

5. The water-cooling protective device for mud gun foundation according to claim 1 or 4, characterized in that: The cooling channel is arranged in an S shape, and the first interface and the second interface are arranged on the wall surface of the protective device body close to the mud gun foundation.

6. The water-cooling protective device for mud gun foundation according to claim 5 is characterized in that: The first interface is a water inlet, the second interface is a water outlet, and the first interface is located below the second interface.

7. The water-cooling protective device for mud gun foundation according to claim 6 is characterized in that: The protective device body includes a closed body outer frame and a plurality of support partitions connected between the top wall and the bottom wall of the body outer frame, one end of the support partition is connected to the side wall of the body outer frame, the other end of the support partition has a distance greater than zero from the side wall of the body outer frame, one of two adjacent support partitions is connected to one side wall of the body outer frame near the first interface, and the other of two adjacent support partitions is connected to the other side wall of the body outer frame near the second interface.

8. The water-cooling protective device for mud gun foundation according to claim 7 is characterized in that: The longitudinal extension direction of the supporting partition is consistent with the extension direction of the main trench of the iron-making yard.

9. The water-cooling protective device for mud gun foundation according to claim 7, characterized in that: At least two lifting ears are arranged on the main body outer frame, and at least two of the lifting ears are symmetrically arranged on two side walls of the main body outer frame.

10. The water-cooling protective device for mud gun foundation according to claim 1, characterized in that: A plurality of support columns are arranged in the cooling channel, and the support columns are arranged at intervals along the flow direction of cooling water in the cooling channel.

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