Device for ignition of damping-down manhole of blast furnace

Abstract

The utility model provides a device for igniting a damping-down manhole of a blast furnace. The device for igniting the damping-down manhole of the blast furnace comprises a hollow barrel and a gas pipe, the gas pipe is arranged on the periphery of the hollow cylinder, and the gas pipe extends from one end of the side wall of the hollow cylinder to the other end of the side wall of the hollow cylinder; one end of the gas pipe is higher than the hollow cylinder; a plurality of holes are formed in the inner wall of the gas pipe and are all formed below the top of the hollow cylinder; at least two baffles are fixedly arranged at the top of the hollow cylinder and placed at the outer end of the manhole opening. A specific gas pipe structure is combined with the hollow cylinder, so that the problems that fire cannot be ignited or flames cannot be combusted continuously in the manhole ignition process in the prior art are solved, and firewood can be prevented from falling off.

Description

Technical Field

[0001] The utility model belongs to the technical field of blast furnace smelting, and relates to a device for igniting a blast furnace wind stop manhole. Background Art

[0002] At present, when a blast furnace fails during production and needs emergency shutdown or planned maintenance, the furnace needs to temporarily stop supplying air, and after steam purging, the furnace top manhole is opened for maintenance. However, there may still be high-temperature gas in the blast furnace at this time. In order to prevent accidents such as gas poisoning or gas explosion, the furnace top must be ignited. Therefore, after the blast furnace is shut down, the two ignition manholes under the airtight box need to be opened to ignite the gas in the furnace before the furnace top can be repaired.

[0003] At present, there are two main methods for igniting the top of a blast furnace when the wind is off. One is to open the ignition manhole, use an ignition gun to ignite, start the ignition gun, let the ignition gun extend above the material surface in the furnace, and use the flame of the ignition gun as a fire to ignite the gas in the furnace. However, the existing method of ignition by relying on the ignition gun has many disadvantages and shortcomings. If the depth of the material line in the furnace is greater than 2.5 meters after the wind is off, it is difficult for the ignition gun flame to directly contact the gas in the furnace, and ignition is difficult and time-consuming; if the temperature of the furnace top is too low after the wind is off, the gas concentration in the furnace is low, and it is difficult for the fire of the ignition gun to ignite the gas in the furnace. The other is to directly place the firewood on the edge of the manhole and ignite it. Due to the airflow in the furnace, the ignited firewood is easily blown out or blown away.

[0004] Under the existing technical conditions, there is a lack of safe, effective and mature technical solutions for manhole ignition. When blast furnace operators are performing manhole ignition, they often encounter problems such as failure to ignite the fire or the flame not being able to burn continuously, which in turn affects the blast furnace shutdown time. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a device for igniting the manhole of a blast furnace, which adopts a specific gas pipe structure in combination with a hollow cylinder to solve the problems of the manhole ignition failing to ignite or the flame failing to burn continuously during the prior art, and can also prevent firewood from falling off.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] The utility model provides a device for igniting a blast furnace wind stop manhole, the device for igniting a blast furnace wind stop manhole comprises a hollow cylinder and a gas pipe;

[0008] The gas pipe is arranged on the outer periphery of the hollow cylinder, and the gas pipe extends from one end of the side wall of the hollow cylinder to the other end of the side wall of the hollow cylinder;

[0009] One end of the gas pipe is higher than the height of the hollow cylinder;

[0010] A plurality of holes are arranged on the inner wall of the gas pipe, and the holes are all arranged below the top of the hollow cylinder;

[0011] At least two baffles are fixedly arranged on the top of the hollow cylinder, and the baffles are placed at the outer ends of the manhole opening.

[0012] In the present invention, the gas pipe is arranged on the outer periphery of the hollow cylinder, and the gas pipe extends from one end of the side wall of the hollow cylinder to the other end of the side wall of the hollow cylinder. The path of the gas pipe extending from one end of the side wall of the hollow cylinder to the other end is not specifically limited here, as long as the pipeline of the entire gas pipe is connected. In addition, the height of one end of the gas pipe is higher than the hollow cylinder, and the specific numerical range of the height is not further limited here, and those skilled in the art can determine it according to actual conditions.

[0013] The device provided by the utility model is arranged on the outer periphery of the hollow cylinder through a gas pipe, and one end of the gas pipe is higher than the height of the hollow cylinder, which is convenient for construction workers to ignite. In addition, a plurality of holes are arranged on the inner wall of the gas pipe, and all of the holes are arranged below the top of the hollow cylinder. Firewood placed inside the cylinder can be ignited by setting a plurality of holes, ensuring that the firewood can continue to burn and avoiding the overflow of unburned gas. Finally, at least two baffles are fixedly arranged on the top of the hollow cylinder, which are used to erect the hollow cylinder on the outer edge of the manhole to avoid the cylinder from falling off.

[0014] As a preferred technical solution of the present utility model, the diameter of the hollow cylinder is smaller than the diameter of the manhole.

[0015] Preferably, the diameter difference between the hollow cylinder and the manhole is 8-12 cm, for example, it can be 8.5 cm, 9 cm, 9.5 cm, 10 cm, 10.5 cm, 11 cm or 11.5 cm, etc., but is not limited to the listed values, and other unlisted values ​​within the numerical range are also applicable.

[0016] In the utility model, a diameter difference between the hollow cylinder and the manhole opening is arranged within a certain range, so that the cylinder can be quickly placed in the manhole.

[0017] As a preferred technical solution of the utility model, the height of the hollow cylinder is 50-100 cm, for example, it can be 55 cm, 60 cm, 65 cm, 70 cm, 75 cm, 80 cm, 85 cm, 90 cm or 95 cm, but is not limited to the listed values, and other unlisted values ​​within the numerical range are also applicable.

[0018] Preferably, the hollow cylinder is a cylinder with an open top.

[0019] Preferably, the side wall and the bottom of the hollow cylinder have strip-shaped or grid-shaped structures.

[0020] In the utility model, the structures of the side wall and the bottom of the hollow cylinder are both arranged in strip or grid shapes, so that the firewood ash can be easily dropped into the manhole and the firewood ash can be prevented from being blown out to the outside.

[0021] In the present invention, the hollow cylinder includes a hollow iron cylinder or a hollow steel cylinder; in addition, the present invention does not limit the specific shape of the hollow cylinder, and those skilled in the art can choose according to actual conditions.

[0022] As a preferred technical solution of the utility model, the hollow cylinder is fixedly connected or detachably connected to the gas pipe.

[0023] As a preferred technical solution of the present utility model, the fixed connection includes welding.

[0024] Preferably, the detachable connection comprises a snap connection.

[0025] As a preferred technical solution of the utility model, the other end of the gas pipe is lower than the height of the hollow cylinder.

[0026] Preferably, the other end of the gas pipe is a sealed end.

[0027] As a preferred technical solution of the present invention, the diameter of the gas pipe is 10-20 cm, for example, it can be 11 cm, 12 cm, 13 cm, 14 cm, 15 cm, 16 cm, 17 cm, 18 cm or 19 cm, but is not limited to the listed values, and other unlisted values ​​within the numerical range are also applicable.

[0028] As a preferred technical solution of the utility model, the shortest distance between the hole and the top of the hollow cylinder is 10-20 cm, for example, it can be 11 cm, 12 cm, 13 cm, 14 cm, 15 cm, 16 cm, 17 cm, 18 cm or 19 cm, but is not limited to the listed values, and other unlisted values ​​within the numerical range are also applicable.

[0029] As a preferred technical solution of the present invention, the number of the holes is ≥ 8, for example, it can be 9, 10, 12, 15, 18 or 20, but is not limited to the listed values, and other unlisted values ​​within the numerical range are also applicable.

[0030] In the utility model, the holes are arranged at intervals on the inner wall of the gas pipe.

[0031] Preferably, the diameter of the hole is 2-5 cm, for example, it can be 2.2 cm, 2.5 cm, 2.8 cm, 3 cm, 3.2 cm, 3.5 cm, 3.8 cm, 4 cm, 4.2 cm, 4.5 cm or 4.8 cm, but is not limited to the listed values, and other unlisted values ​​within the numerical range are also applicable.

[0032] As a preferred technical solution of the utility model, the length of the baffle is 20-40cm, for example, it can be 22cm, 24cm, 25cm, 28cm, 30cm, 32cm, 35cm, 36cm or 38cm, but is not limited to the listed values, and other unlisted values ​​within the numerical range are also applicable.

[0033] Preferably, the thickness of the baffle is 5-10 cm, for example, it can be 5.5 cm, 6 cm, 6.5 cm, 7 cm, 7.5 cm, 8 cm, 8.5 cm, 9 cm or 9.5 cm, but is not limited to the listed values, and other unlisted values ​​within the numerical range are also applicable.

[0034] In the utility model, the baffle includes an iron baffle or a steel baffle.

[0035] Compared with the prior art, the beneficial effects of the utility model are:

[0036] The utility model provides a device for igniting a blast furnace windage manhole. A gas pipe is arranged on the outer periphery of the hollow cylinder, and one end of the gas pipe is higher than the height of the hollow cylinder, so that construction workers can ignite the gas easily. In addition, a plurality of holes are arranged on the inner wall of the gas pipe, and all of the holes are arranged below the top of the hollow cylinder. Firewood placed inside the cylinder can be ignited by setting up the plurality of holes, so that the firewood can be ensured to burn continuously and the unburned gas can be prevented from overflowing. Finally, at least two baffles are fixedly arranged on the top of the hollow cylinder, so as to erect the hollow cylinder on the outer edge of the manhole and prevent the cylinder from falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 A schematic diagram of the structure of the device for igniting the blast furnace wind-off manhole provided in Example 1;

[0038] Figure 2 is a schematic diagram of the gas pipe path in Example 1;

[0039] Figure 3 is a schematic diagram of the gas pipe path in Example 2;

[0040] Figure 4 This is a schematic diagram of the gas pipe path in Example 3.

[0041] Among them, 1-hollow cylinder, 2-gas pipe, 3-hole, 4-baffle. DETAILED DESCRIPTION

[0042] It should be understood that, in the description of the present utility model, the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0043] It should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "disposed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0044] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0045] Example 1

[0046] This embodiment provides a device for igniting a blast furnace wind-off manhole (such as Figure 1 As shown), the device for ignition of the blast furnace wind-off manhole comprises a hollow cylinder 1 and a gas pipe 2;

[0047] The diameter of the hollow cylinder 1 is smaller than the diameter of the manhole;

[0048] The hollow cylinder 1 is a cylinder with an opening at the top; the side wall and the bottom structure of the hollow cylinder 1 are both strip-shaped;

[0049] The gas pipe 2 is arranged on the outer periphery of the hollow cylinder 1, and the gas pipe 2 extends from one end of the side wall of the hollow cylinder 1 to the other end of the side wall of the hollow cylinder 1 (such as Figure 2 shown);

[0050] One end of the gas pipe 2 is higher than the height of the hollow cylinder 1;

[0051] Ten holes 3 are arranged on the inner wall of the gas pipe 2, and the holes 3 are all arranged below the top of the hollow cylinder 1;

[0052] The hollow cylinder 1 is fixedly connected to the gas pipe 2, and the fixed connection is welding;

[0053] Four baffles 4 are fixedly arranged on the top of the hollow cylinder 1, and the baffles 4 are placed at the outer ends of the manholes;

[0054] When the device provided in this embodiment is used for ignition of the blast furnace wind-off manhole, it is first placed in the manhole, and firewood is placed in the hollow cylinder, and then the gas pipe is ignited, and the firewood can continue to burn.

[0055] Example 2

[0056] This embodiment provides a device for igniting a blast furnace wind stop manhole, in which a gas pipe is arranged on the outer periphery of the hollow cylinder, and the gas pipe extends from one end of the side wall of the hollow cylinder to the other end of the side wall of the hollow cylinder (such as Figure 3 As shown); except that 18 holes are provided on the inner wall of the gas pipe, other conditions are the same as those in Example 1.

[0057] When the device provided in this embodiment is used for ignition of the blast furnace wind-off manhole, it is first placed in the manhole, and firewood is placed in the hollow cylinder, and then the gas pipe is ignited, and the firewood can continue to burn.

[0058] Example 3

[0059] This embodiment provides a device for igniting a blast furnace wind stop manhole, in which a gas pipe is arranged on the outer periphery of the hollow cylinder, and the gas pipe extends from one end of the side wall of the hollow cylinder to the other end of the side wall of the hollow cylinder (such as Figure 4 As shown); except that 22 holes are provided on the inner wall of the gas pipe, other conditions are the same as those in Example 1.

[0060] When the device provided in this embodiment is used for ignition of the blast furnace wind-off manhole, it is first placed in the manhole, and firewood is placed in the hollow cylinder, and then the gas pipe is ignited, and the firewood can continue to burn.

[0061] Example 4

[0062] The present embodiment provides a device for igniting a blast furnace windage manhole, except that the diameter difference between the hollow cylinder and the manhole opening is further limited to 10 cm; the height of the hollow cylinder is 100 cm; the hollow cylinder is a hollow iron cylinder; the other end of the gas pipe is lower than the height of the hollow cylinder; the other end of the gas pipe is a sealed end; the diameter of the gas pipe is 15 cm; the shortest distance between the hole and the top of the hollow cylinder is 15 cm; the diameter of the hole is 3 cm; the length of the baffle is 30 cm and the thickness is 8 cm, other conditions are the same as those in Example 1.

[0063] When the device provided in this embodiment is used for ignition of the blast furnace wind-off manhole, it is first placed in the manhole, and firewood is placed in the hollow cylinder, and then the gas pipe is ignited, and the firewood can continue to burn.

[0064] Example 5

[0065] This embodiment provides a device for igniting a blast furnace wind-off manhole. Except that the hollow cylinder and the gas pipe are detachably connected by a buckle, other conditions are the same as those of Embodiment 1.

[0066] When the device provided in this embodiment is used for ignition of the blast furnace wind-off manhole, it is first placed in the manhole, and firewood is placed in the hollow cylinder, and then the gas pipe is ignited, and the firewood can continue to burn.

[0067] Example 6

[0068] This embodiment provides a device for igniting a blast furnace wind-off manhole. Except that the side walls and the bottom of the hollow cylinder have a grid-like structure, other conditions are the same as those of Embodiment 1.

[0069] When the device provided in this embodiment is used for ignition of the blast furnace wind-off manhole, it is first placed in the manhole, and firewood is placed in the hollow cylinder, and then the gas pipe is ignited, and the firewood can continue to burn.

[0070] The applicant declares that the above is only a specific implementation method of the present utility model, but the protection scope of the present utility model is not limited thereto. The technicians in the relevant technical field should understand that any changes or substitutions that can be easily thought of by the technicians in the relevant technical field within the technical scope disclosed in the present utility model fall within the protection scope and disclosure scope of the present utility model.

Claims

1. A device for igniting a blast furnace wind-off manhole, characterized in that: The device for igniting the blast furnace wind-off manhole comprises a hollow cylinder and a gas pipe; The gas pipe is arranged on the outer periphery of the hollow cylinder, and the gas pipe extends from one end of the side wall of the hollow cylinder to the other end of the side wall of the hollow cylinder; One end of the gas pipe is higher than the height of the hollow cylinder; A plurality of holes are arranged on the inner wall of the gas pipe, and the holes are all arranged below the top of the hollow cylinder; At least two baffles are fixedly arranged on the top of the hollow cylinder, and the baffles are placed at the outer ends of the manhole opening.

2. The device for ignition of blast furnace wind-off manhole according to claim 1, characterized in that: The diameter of the hollow cylinder is smaller than the diameter of the manhole; The diameter difference between the hollow cylinder and the manhole is 8-12 cm.

3. The device for ignition of blast furnace wind-off manhole according to claim 1, characterized in that: The height of the hollow cylinder is 50-100 cm; The hollow cylinder is a cylinder with an opening at the top; The side wall and the bottom of the hollow cylinder are both in strip or grid structures.

4. The device for ignition of blast furnace wind-off manhole according to claim 1, characterized in that: The hollow cylinder is fixedly connected or detachably connected to the gas pipe.

5. The device for ignition of blast furnace wind-off manhole according to claim 4, characterized in that: The fixed connection includes welding; The detachable connection comprises a snap connection.

6. The device for ignition of blast furnace wind-off manhole according to claim 1, characterized in that: The other end of the gas pipe is lower than the height of the hollow cylinder; The other end of the gas pipe is a sealed end.

7. The device for ignition of blast furnace wind-off manhole according to claim 1, characterized in that: The diameter of the gas pipe is 10-20 cm.

8. The device for ignition of blast furnace wind-off manhole according to claim 1, characterized in that: The shortest distance between the hole and the top of the hollow cylinder is 10-20 cm.

9. The device for ignition of blast furnace manhole according to claim 1, characterized in that: The number of holes is ≥8; The diameter of the holes is 2-5 cm.

10. The device for ignition of blast furnace wind-off manhole according to claim 1, characterized in that: The length of the baffle is 20-40 cm; The thickness of the baffle is 5-10 cm.

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