CN216073898U - Water tank pipe network at converter mouth - Google Patents

Abstract

The utility model discloses a converter mouth water tank pipe network, which relates to the technical field of metallurgical production equipment and comprises a water inlet circular pipe and a water return circular pipe which are arranged on a converter shell, wherein the water inlet circular pipe and the water return circular pipe are respectively connected with a cooling pipe inside a converter mouth water tank through a water inlet branch pipe and a water return branch pipe, the water inlet circular pipe and the water return circular pipe are circular pipes, pipe clamps are arranged on the water inlet circular pipe and the water return circular pipe at intervals, each pipe clamp is provided with a U-shaped hoop plate, a connecting part extending outwards is arranged at an opening of each U-shaped hoop plate, the connecting parts are connected with a fixing plate through bolts, and the fixing plate is welded with the converter shell through a support plate. Compared with the prior art, the utility model increases the water flow, so that the furnace mouth water tank can obtain more effective cooling effect; the pipe clamp, the water inlet ring pipe and the water outlet ring pipe are provided with proper gaps, when the pipe network expands with heat and contracts with cold and the furnace mouth is subjected to slag beating, the water inlet ring pipe and the water return ring pipe can eliminate the generated stress through the up-and-down movement, and the phenomenon that the pipe network is cracked and leaks due to welding seams caused by slag beating at the furnace mouth and expansion with heat and contraction with cold is avoided.

Description

Water tank pipe network at converter mouth

Technical Field

The utility model relates to the technical field of metallurgical production equipment, in particular to a converter mouth water tank pipe network.

Background

In the converter steelmaking process, the converter body is the core of steelmaking equipment and plays a role in containing molten steel and providing a steelmaking operation platform for a steelmaking process. The converter shell is made of Q345R, the furnace mouth water tank is made of nodular cast iron, the temperature of the molten steel leaving station can reach more than 1600 ℃, and refractory bricks are built inside the converter shell to ensure that the converter shell is stably produced and is not melted in a high-temperature state. The fire door water tank is located the upper portion of converter body, receives the red sediment to corrode during the production deslagging, in order to prevent that the fire door water tank from warping or melting, has distributed the coiled pipe in its inside, lets in the cooling water that is used for cooling arrangement in the coiled pipe, and the stove outer covering outside is equipped with the water tank pipe network that communicates with the coiled pipe to guarantee the long-term steady operation of fire door water tank. The converter mouth water tank pipe network used at present is shown in fig. 1, and comprises a water inlet pipe 103 and a water return pipe which are arranged around the upper part of a converter shell 104, wherein the water inlet pipe 103 and the water return pipe are respectively communicated with a coiled pipe inside the converter mouth water tank 101 through a water inlet branch pipe 102 and a water return branch pipe, the cross sections of the water inlet pipe 103 and the water return pipe are semicircular, and the side openings of the water inlet pipe 103 and the water return pipe are welded with the converter shell 104. Because can lead to the red sediment of thickness on the fire door water tank because of various factors often when production, for making molten iron, scrap steel go into the stove smoothly, adopt big gun machine to carry out broken clearance to the red sediment on the fire door water tank usually, big gun machine is beaten and often leads to fire door water tank pipe network welding seam to split, and fire door water tank pipe network expend with heat and contract with cold also can lead to water pipe welding seam to split to cause and leak moreover, compelled to shut down the stove and overhaul.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problem of crack and water leakage of a welding seam of a converter mouth water tank pipe network caused by slag striking at a converter mouth and expansion and contraction of heat.

In order to solve the problems, the utility model adopts the technical scheme that: the converter fire hole water tank pipe network comprises a water inlet ring pipe and a water return ring pipe which are arranged on a converter shell in a surrounding mode, wherein the water inlet ring pipe and the water return ring pipe are respectively connected with a cooling pipe inside a fire hole water tank through a water inlet branch pipe and a water return branch pipe, the water inlet ring pipe and the water return ring pipe are circular pipes, pipe clamps are arranged on the water inlet ring pipe and the water return ring pipe at intervals, each pipe clamp is provided with a U-shaped hoop plate, a connecting part extending outwards is arranged at the opening of each U-shaped hoop plate, the connecting parts are connected with a fixing plate through bolts, and the fixing plate is welded with the converter shell through a support plate.

In the above technical scheme of the converter mouth water tank pipe network, the more specific technical scheme may also be: the water inlet ring pipe and the water return ring pipe are respectively connected with a water pipeline inside the converter backing ring through a water inlet metal hose and a water return metal hose.

Furthermore, the water inlet ring pipe and the water return ring pipe are arranged at the position of the furnace shell close to the top of the converter backing ring.

Due to the adoption of the technical scheme, compared with the prior art, the utility model has the following beneficial effects:

1. the water inlet ring pipe and the water return ring pipe adopt round pipes, so that the water flow is greatly increased, and the furnace mouth water tank is cooled more effectively. The water inlet ring pipe and the water return ring pipe are welded with the furnace shell through the pipe clamps, proper gaps are reserved among the pipe clamps, the water inlet ring pipe and the water outlet ring pipe, and when the pipe network expands with heat and contracts with cold and the furnace mouth is blown with slag, the stress generated by the water inlet ring pipe and the water return ring pipe can be eliminated through up-and-down movement, so that the problem that the welding line is pulled to crack and leak water due to slag blowing at the furnace mouth and expansion with cold is avoided, and normal production is guaranteed.

2. The water inlet ring pipe and the water return ring pipe are respectively connected with a water pipeline inside the converter supporting ring through the water inlet metal hose and the water return metal hose, so that the water tank at the furnace mouth is cooled circularly, and resources are saved.

3. The water inlet ring pipe and the water return ring pipe are arranged at the position, close to the top of the converter backing ring, of the furnace shell, so that the maintenance and point inspection of operators are facilitated, the maintenance time is greatly shortened, and the labor intensity is reduced.

Drawings

Fig. 1 is a schematic structural diagram of a water tank pipe network at a converter mouth of a conventional converter.

Fig. 2 is a schematic structural diagram of an embodiment of the present invention.

Fig. 3 is a schematic structural view of the pipe clamp in the embodiment of the utility model.

Detailed Description

The utility model will be further described in detail with reference to the following examples:

as shown in fig. 2, the water tank pipe network at the converter mouth of the converter comprises a water inlet circular pipe 1 and a water return circular pipe 2 which are arranged around a converter shell 10, wherein the water inlet circular pipe 1 and the water return circular pipe 2 are arranged at the positions of the converter shell 10 close to the top of a converter trunnion ring 3. The water inlet ring pipe 1 is connected with a cooling pipe inside the furnace mouth water tank 7 through six water inlet branch pipes 8, and the six water inlet branch pipes 8 are arranged at intervals along the circumferential direction of the furnace shell 10; the return water ring pipe 2 is connected with a cooling pipe inside the furnace mouth water tank 7 through six return water branch pipes 9, the six return water branch pipes 9 are arranged at intervals along the circumferential direction of the furnace shell 10, and the cooling pipe inside the furnace mouth water tank 7 is a coiled pipe. The water inlet circular pipe 1 and the water return circular pipe 2 are both circular pipes, pipe clamps 4 are arranged on the water inlet circular pipe 1 and the water return circular pipe 2 at intervals, each pipe clamp 4 is provided with a U-shaped hoop plate 4-1, a connecting part extending outwards is arranged at an opening of the U-shaped hoop plate 4-1, the connecting part is connected with a fixing plate 4-2 through a bolt, and the fixing plate 4-2 is welded with the furnace shell 10 through a support plate 4-3, as shown in figure 3. The water inlet ring pipe 1 and the water return ring pipe 2 are respectively connected with a water pipeline inside the converter backing ring 3 through a water inlet metal hose 5 and a water return metal hose 6.

The water inlet ring pipe 1 and the water return ring pipe 2 adopt round pipes, so that the water flow is greatly increased, and the furnace mouth water tank 7 can obtain more effective cooling effect. The water inlet ring pipe 1 and the water return ring pipe 2 are welded with the furnace shell 10 through the pipe clamps 4, proper gaps are left between the pipe clamps 4 and the water inlet ring pipe 1 and between the water outlet ring pipe 2, when the pipe network expands with heat and contracts with cold and the furnace mouth is blasted with slag, the stress generated by the water inlet ring pipe 1 and the water return ring pipe 2 can be eliminated through the up-and-down movement, so that the problem that the welding line is cracked and leaked due to slag blasting of the furnace mouth and expansion with heat and contraction with cold of the whole pipe network is avoided, and normal production is ensured.

The converter mouth water tank pipe network is used in a No. 4#210t converter in a smelting workshop of a Guangxi steel plant in 12 months in 2020, and the joint weld cracking accident does not occur in 26 days 9 and 26 months in 2021.

Claims (3)

1. The utility model provides a converter fire door water tank pipe network, is including having water inlet ring pipe (1) and return water ring pipe (2) around on stove outer covering (10), water inlet ring pipe (1) return water ring pipe (2) are connected with the inside cooling tube of fire door water tank (7) through water inlet branch pipe (8) and return water branch pipe (9) respectively, its characterized in that: the water inlet ring pipe (1) and the water return ring pipe (2) are round pipes, pipe clamps (4) are arranged on the water inlet ring pipe (1) and the water return ring pipe (2) at intervals, each pipe clamp (4) is provided with a U-shaped hoop plate (4-1), a connecting part extending outwards is arranged at an opening of each U-shaped hoop plate (4-1), the connecting part is connected with a fixing plate (4-2) through a bolt, and the fixing plate (4-2) is welded with the furnace shell (10) through a support plate (4-3).

2. The converter mouth water tank pipe network of claim 1, which is characterized in that: the water inlet ring pipe (1) and the water return ring pipe (2) are respectively connected with a water pipeline inside the converter supporting ring (3) through a water inlet metal hose (5) and a water return metal hose (6).

3. The converter mouth water tank pipe network of claim 2, characterized in that: the water inlet ring pipe (1) and the water return ring pipe (2) are arranged at the position of the furnace shell (10) close to the top of the converter trunnion ring (3).

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