Submerged arc furnace stand column heat dredging device

Abstract

The utility model provides a heat dredging device for a vertical column of a submerged arc furnace, and belongs to the technical field of submerged arc furnaces. Comprising a submerged arc furnace stand column, a heat dredging cavity is formed in the submerged arc furnace stand column, a cooling water pipe is arranged in the heat dredging cavity, a cold air pipe assembly is arranged on the cooling water pipe, the cold air pipe assembly comprises an upper annular pipe and a lower annular pipe which are fixedly arranged on the cooling water pipe in a sleeving mode, and a plurality of communicated air conveying pipes are arranged between the upper annular pipe and the lower annular pipe; an air outlet penetrating out of the heat dredging cavity is formed in one side of the upper annular pipe, and an air inlet pipe penetrating out of the heat dredging cavity is arranged on the other side of the lower annular pipe. Cold water is conveyed into the cooling water pipe, cold air is conveyed into the cold air pipe assembly, the submerged arc furnace stand column is cooled, the cooling water pipe is surrounded by the cold air pipe assembly, the submerged arc furnace door stand column is effectively prevented from being etched by circulating water, the phenomena of cracks and water leakage of the submerged arc furnace door stand column are avoided, and the service life of equipment is effectively prolonged; and frequent furnace shutdown events are avoided.

Description

TECHNICAL FIELD

[0001] The utility model provides a mineral heat stove stand column heat dredging device belongs to mineral heat stove technical field. BACKGROUND

[0002] The main role of the mineral heat stove door stand column is to support and fix the door, to ensure that the door can work stably under high temperature and heavy load conditions, and to maintain the sealing property of the door to prevent high temperature gas and material in the furnace from leaking.

[0003] The mineral heat stove door stand column is usually cooled by external water circulation cooling, and the cooling water pipe is also subjected to high temperature baking in the furnace chamber, which causes the circulating water to erode the mineral heat stove door stand column, and thus the mineral heat stove door stand column is prone to cracks and water leakage, thereby shortening the service life of the equipment and frequently causing shutdown events. UTILITY MODEL CONTENTS

[0004] The technical problem solved by the utility model is that circulating water erodes the mineral heat stove door stand column, which is prone to cracks and water leakage, shortens the service life of the equipment, and frequently causes shutdown events.

[0005] To solve the technical problem, the utility model provides a technical scheme of a mineral heat stove stand column heat dredging device, which comprises a mineral heat stove stand column, a heat dredging cavity is arranged in the mineral heat stove stand column, a cooling water pipe is arranged in the heat dredging cavity, a cold air pipe assembly is arranged on the cooling water pipe, the cold air pipe assembly comprises an upper annular pipe and a lower annular pipe which are fixed on the cooling water pipe, a plurality of air conveying pipes which are connected in series are arranged between the upper annular pipe and the lower annular pipe, an air outlet is arranged on one side of the upper annular pipe and penetrates the heat dredging cavity, and an air inlet pipe is arranged on the other side of the lower annular pipe and penetrates the heat dredging cavity.

[0006] Further, the upper annular pipe is arranged above the heat dredging cavity, the lower annular pipe is arranged below the heat dredging cavity, and the air outlet port is inserted into the furnace chamber of the mineral heat stove.

[0007] Further, a maintenance cover is arranged on the top of the mineral heat stove stand column, penetrates the cooling water pipe, and is arranged on the top of the heat dredging cavity, and a bolt is arranged on the maintenance cover and fixedly connected to the top of the mineral heat stove stand column.

[0008] Further, a backflow pipe is arranged on the top of the cooling water pipe and used for backflow to an external water supply source, and a water inlet pipe is arranged at the bottom of the cooling water pipe and penetrates the bottom of the mineral heat stove stand column.

[0009] Further, an external water pump is arranged at the water inlet pipe port and connected to the external water supply source, and a cold air blower is arranged on the outside of the mineral heat stove stand column and connected to the air inlet pipe port.

[0010] Further, the air supply pipe side wall is provided with a plurality of fins in contact with the outer wall of the cooling water pipe.

[0011] The utility model discloses beneficial effect:

[0012] Through the cooling water pipe conveying cold water, the cold air pipe assembly is surrounded by the cooling water pipe, can effectively avoid the mineral heat furnace door column being immersed by circulating water and being eroded, avoids the mineral heat furnace door column crack and the phenomenon of water leakage, effectively improves the service life of equipment, prevents the frequent furnace shutdown event, carries out the cooling of the mineral heat furnace column, and the heat is blown to the mineral heat furnace hearth from the air outlet, can make the heat in the mineral heat furnace not overflow, and the heat about to overflow is dredged to the furnace. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the plane schematic diagram of the utility model.

[0014] Figure 2 It is the local structure schematic diagram of the utility model.

[0015] Figure 3 It is the cold air pipe assembly structure schematic diagram of the utility model.

[0016] Figure 4 It is the A place local enlarged view of the utility model.

[0017] Figure 5 It is the B place local enlarged view of the utility model.

[0018] 1, mineral heat furnace column;2, heat dredging cavity;3, cooling water pipe;4, cold air pipe assembly;5, upper annular pipe;6, lower annular pipe;7, air supply pipe;8, air outlet;9, air inlet pipe;10, overhauling cover;11, bolt;12, backflow pipe;13, water inlet pipe;14, fin. DETAILED DESCRIPTION

[0019] The utility model is further explained in connection with the drawings.

[0020] According to the drawings Figure 1 、 2 As shown: the utility model provides a mineral heat furnace column heat dredging device: including mineral heat furnace column 1, is equipped with heat dredging cavity 2 in mineral heat furnace column 1, is equipped with cooling water pipe 3 in heat dredging cavity 2, and the top of cooling water pipe 3 is equipped with backflow pipe 12 for backflowing to the outside water supply, and the bottom port of cooling water pipe 3 is out of the bottom of mineral heat furnace column 1 and is equipped with the water inlet pipe 13 of intercommunication, and the water inlet pipe 13 port is equipped with the outside water pump of intercommunication with the outside water supply, through the starting outside water pump, the cold water of water supply is flowed into cooling water pipe 3 through water inlet pipe 13, and then is circulated and utilized from backflow pipe 12 to water supply.

[0021] According to the accompanying drawings Figure 1 、 3 , 4: cooling water pipe 3 is provided with cold air pipe assembly 4, cold air pipe assembly 4 includes the upper annular pipe 5 of fixed sleeve on cooling water pipe 3, lower annular pipe 6, a plurality of connected wind pipe 7 are arranged between upper annular pipe 5 and lower annular pipe 6, a plurality of fins 14 are arranged on the side wall of wind pipe 7 and contact the outer wall of cooling water pipe 3, the air outlet 8 of one side of upper annular pipe 5 is provided with the air inlet pipe 9 of the other side of lower annular pipe 6 and passes through the heat dissipation cavity 2, upper annular pipe 5 is arranged above the heat dissipation cavity 2, lower annular pipe 6 is arranged below the heat dissipation cavity 2, the air outlet 8 port is inserted into the hearth of the electric arc furnace, the outer side of the electric arc furnace column 1 is provided with the cold air fan connected with the air inlet pipe 9 port, by starting the cold air fan, the cold air is transported from the air inlet pipe 9 into the lower annular pipe 6, flows into the upper annular pipe 5 through a plurality of wind pipes 7, and finally blows to the hearth of the electric arc furnace from the air outlet 8.

[0022] According to the accompanying drawings Figure 1 、 5 : the top of the electric arc furnace column 1 is provided with the maintenance cover 10 placed on the top of the heat dissipation cavity 2 and passing through the cooling water pipe 3, the maintenance cover 10 is provided with the bolt 11 fixedly connected with the top of the electric arc furnace column 1, by opening the maintenance cover 10, the cooling water pipe 3 and the cold air pipe assembly 4 in the heat dissipation cavity 2 can be conveniently maintained.

[0023] The principle of the utility model

[0024] In use, by starting the external water pump, the cold water at the water supply source flows into the cooling water pipe 3 through the water inlet pipe 13, and then flows back to the water source from the backflow pipe 12 for recycling, by the cold air pipe assembly 4, the cold air fan is started, the cold air flows into the upper annular pipe 5 from the air inlet pipe 9, the lower annular pipe 6 and a plurality of wind pipes 7, and finally blows to the hearth of the electric arc furnace from the air outlet 8, the cooling water pipe 3 is surrounded by the cold air pipe assembly 4, the fins 14 play a role in heat transfer, which can effectively prevent the electric arc furnace door column from being eroded by circulating water, avoid cracks and water leakage of the electric arc furnace door column, effectively improve the service life of the equipment, so as to avoid frequent shutdown events, play a role in cooling the electric arc furnace column, can make the heat in the electric arc furnace not overflow, and the heat about to overflow is dissipated into the furnace, and finally the heat in the furnace is transported to the waste heat power generation system by the flue gas collecting device for power generation.

[0025] The above describes the utility model and its implementation, which is not restrictive, and the drawings shown are only one of the embodiments of the utility model, and the actual structure is not limited thereto. In summary, if a person skilled in the art is inspired, without departing from the creative purpose of the utility model, similar structure modes and embodiments can be designed without creativity, which should belong to the protection scope of the utility model.

Claims

1. A heat dissipation device for a shaft of an electric arc furnace, comprising a shaft (1) of an electric arc furnace, characterized in that: The said ore furnace column (1) is internally provided with a heat dissipation cavity (2), the said heat dissipation cavity (2) is internally provided with a cooling water pipe (3), the said cooling water pipe (3) is externally provided with a cold air pipe assembly (4), the said cold air pipe assembly (4) comprises an upper annular pipe (5) and a lower annular pipe (6) which are fixedly sleeved on the cooling water pipe (3), a plurality of air conveying pipes (7) which are in communication are arranged between the upper annular pipe (5) and the lower annular pipe (6), one side of the upper annular pipe (5) is provided with an air outlet (8) which penetrates through the heat dissipation cavity (2), and the other side of the lower annular pipe (6) is provided with an air inlet pipe (9) which penetrates through the heat dissipation cavity (2).

2. A heat dissipation device for a shaft of a submerged arc furnace according to claim 1, characterized in that: The said upper annular pipe (5) is arranged above the heat dissipation cavity (2), the said lower annular pipe (6) is arranged below the heat dissipation cavity (2), and the said air outlet (8) is inserted into the ore furnace hearth.

3. A heat dissipation device for a shaft of a submerged arc furnace according to claim 1, characterized in that: The said ore furnace column (1) is provided with an inspection cover (10) which is arranged on the top of the heat dissipation cavity (2) and penetrates through the cooling water pipe (3), and the said inspection cover (10) is externally provided with a bolt (11) which is fixedly connected with the top of the ore furnace column (1).

4. A heat dissipation device for a shaft of a submerged arc furnace according to claim 1, characterized in that: The said cooling water pipe (3) is provided with a backflow pipe (12) at the top thereof, the said backflow pipe (12) is used for backflowing to an external water supply source, and the bottom of the cooling water pipe (3) penetrates through the bottom of the ore furnace column (1) and is provided with an inlet pipe (13) which is in communication.

5. A heat dissipation device for a shaft of an ore smelting furnace according to claim 4, characterized in that: The said inlet pipe (13) is externally provided with an external water pump which is in communication with the external water supply source, and the said ore furnace column (1) is externally provided with a cold air fan which is in communication with the air inlet pipe (9).

6. A heat dissipation device for a shaft of a submerged arc furnace according to claim 1, characterized in that: The said air conveying pipe (7) is externally provided with a plurality of fins (14) which are in contact with the outer wall of the cooling water pipe (3).

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