Rapid installation method for water-cooled furnace mouth of converter

Abstract

The invention discloses a method for quickly mounting a water-cooling furnace mouth of a converter, which belongs to the technical field of metallurgical equipment and comprises the following steps of: manufacturing an auxiliary device for mounting the water-cooling furnace mouth, mounting each water-cooling furnace mouth casting on the auxiliary device in a spare part area, and connecting with the auxiliary device by using a lifting bolt; the auxiliary device provided with the water-cooling furnace mouth castings is integrally hoisted and installed on the converter furnace mouth through a truck crane, and then the auxiliary device is disassembled, so that the converter water-cooling furnace mouth is rapidly installed; the method saves the construction period and cost, improves the installation efficiency, is simple and convenient, and improves the safety.

Description

Technical Field

[0001] The invention relates to the technical field of metallurgical equipment, and in particular to a method for quickly installing a water-cooling furnace mouth of a converter. Background Art

[0002] Taking a 120T converter as an example, the water-cooled furnace mouth of the converter is an important part of the furnace body, and its main function is to protect the furnace mouth of the converter. During the process of adding scrap steel, adding molten iron and blowing, the furnace mouth will be impacted and washed by high temperature, so the furnace mouth is easily damaged and deformed. The installation of a water-cooled furnace mouth can reduce the damage and deformation of the furnace mouth and can also protect the refractory bricks at the furnace mouth from damage to a certain extent.

[0003] At present, the installation method for the buried pipe casting structure water-cooled furnace mouth is to install multiple water-cooled furnace mouth castings one by one through a 25T truck crane. During the installation process, each installation of a water-cooled furnace mouth casting requires power supply to the converter tilting, and after the converter furnace mouth angle is adjusted, the converter tilting is shut down, and another water-cooled furnace mouth casting is hoisted to the furnace mouth by the 25T truck crane for installation. This installation method requires power supply to the converter tilting several times during the installation process, and then the power is shut down after the furnace is adjusted. The installation process is relatively cumbersome and takes a long time; this is undesirable for those skilled in the art. Summary of the invention

[0004] In view of the above-mentioned problems, the present invention provides a method for quickly installing a water-cooled furnace mouth of a converter to solve the problem that the installation process of the water-cooled furnace mouth in the prior art is relatively complicated and time-consuming.

[0005] A method for quickly installing a water-cooled furnace port of a converter, comprising the following steps:

[0006] A water-cooled furnace mouth installation auxiliary device is manufactured, the water-cooled furnace mouth installation auxiliary device comprises a circular cylinder and a circular ring plate located at the top of the circular cylinder, the edge of the circular cylinder and the edge of the inner hole of the circular ring plate are integrally connected and formed, and a plurality of first screw holes are opened on the circular ring plate;

[0007] Providing a plurality of water-cooled furnace mouth castings, each of which is provided with a second screw hole, and the plurality of water-cooled furnace mouth castings can be assembled to form a circular water-cooled furnace mouth;

[0008] In the spare parts area, each of the water-cooled furnace mouth castings is installed in a circular shape on the auxiliary device, and the water-cooled furnace mouth casting is fixed to the lower surface of the circular ring plate by eye screws to form a combined structure;

[0009] Before stopping the furnace, the car is hoisted to the platform in front of the converter by a crane, and the combined structure is hoisted to the platform in front of the converter by a crane;

[0010] After the furnace is shut down, the power outage sign is issued, and the old water-cooled furnace mouth and skirt plate on the converter are removed. After the power is supplied, the converter mouth is moved to the front of the furnace, and the power outage sign is issued again after the converter mouth is moved to the front of the furnace;

[0011] The combined structure is lifted by a truck crane and connected to the converter furnace mouth, and the water-cooling furnace mouth water pipe is placed into the U-shaped pipe groove of the converter furnace mouth;

[0012] The water-cooled furnace mouth castings are fixedly connected to the converter furnace mouth;

[0013] The auxiliary device is removed by removing the eye screws connecting the auxiliary device and the water-cooled furnace mouth casting.

[0014] In some of the embodiments, after the auxiliary device is removed, the second screw hole on the water-cooling furnace port is sealed with a countersunk screw.

[0015] In some of the embodiments, each of the water-cooled furnace mouth castings is fixedly connected to the converter furnace mouth using square head bolts.

[0016] In some of the embodiments, a crane is used to lift the combined structure to the platform in front of the furnace via the eye screws.

[0017] In some of the embodiments, after the auxiliary device is removed, the auxiliary device is lifted away.

[0018] In some of the embodiments, the auxiliary device is a steel structure.

[0019] In some of the embodiments, the annular water-cooled furnace mouth is formed by splicing six water-cooled furnace mouth castings.

[0020] In some of the embodiments, the outer diameter of the circular cylinder is matched with the inner diameter of the annular water-cooling furnace mouth.

[0021] Compared with the prior art, the present invention has at least one of the following advantages or beneficial effects:

[0022] 1. Save time, save costs, and improve efficiency. The traditional method of installing a water-cooled furnace mouth requires 8 workers and 8 hours to complete. The present invention can install six water-cooled furnace mouth castings on the water-cooled furnace mouth auxiliary device before stopping the furnace. After stopping the furnace, the combination of the water-cooled furnace mouth auxiliary device and the water-cooled furnace mouth casting can be directly lifted and installed on the converter furnace mouth. It only takes 4 workers and 3 hours to complete.

[0023] Second, it is simple and convenient, and improves safety. In the traditional method, each time a water-cooled furnace mouth is installed, it is necessary to stop the power supply and shake the furnace to adjust the furnace mouth angle. The process is relatively cumbersome, and there may be safety risks during the shaking process. The present invention only needs to shake the converter furnace mouth to the front of the furnace to complete the installation of the water-cooled furnace mouth. There is no need to shake the furnace repeatedly. The process is simple and less dangerous. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention and its features, appearance and advantages will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings. The same reference numerals indicate the same parts in all the drawings. The drawings are not drawn to scale, and emphasis is placed on illustrating the subject matter of the present invention.

[0025] Figure 1 It is a flow chart of a method for quickly installing a water-cooling furnace port of a converter in an embodiment of the present invention;

[0026] Figure 2 A top view of a water-cooled furnace port installation auxiliary device according to an embodiment of the present invention;

[0027] Figure 3 A side view of a water-cooled furnace port installation auxiliary device according to an embodiment of the present invention;

[0028] Figure 4 A top view of the combined structure in an embodiment of the present invention;

[0029] Figure 5 It is a front view of the combined structure in the embodiment of the present invention;

[0030] Figure 6 It is a schematic diagram of the process of quick installation of the water-cooling furnace mouth of the converter in an embodiment of the present invention;

[0031] In the figure: 1-eye screw; 2-auxiliary device; 21-circular plate; 211-first screw hole; 22-circular cylinder; 3-water-cooled furnace mouth; 4-square head bolt; 5-truck crane; 6-converter furnace mouth. DETAILED DESCRIPTION

[0032] The present invention is further described below with reference to the accompanying drawings and specific embodiments, but is not intended to be limiting of the present invention:

[0033] like Figure 1 As shown, the present invention provides a method for quickly installing a water-cooling furnace port of a converter, which realizes the quick installation of the water-cooling furnace port of the converter. Specifically, the method comprises the following steps:

[0034] Step S1, such as Figure 2 and 3As shown, a water-cooled furnace mouth installation auxiliary device 2 is manufactured, which includes a circular cylinder 22 and a circular ring plate 21 located at the top of the circular cylinder 22, the edge of the circular cylinder 22 and the edge of the inner hole of the circular ring plate 21 are integrally connected (that is, the inner cavity diameter of the circular cylinder 22 is the same as the inner hole diameter of the circular ring plate 21), and a plurality of first screw holes 211 are opened on the circular ring plate 21.

[0035] Specifically, the auxiliary device 2 is a steel structure and can be made of a steel plate. The diameter of the inner hole of the annular plate 21 is 2900 mm, and the outer diameter of the annular plate 21 is 4082 mm. The height of the water-cooled furnace mouth installation auxiliary device 2 is 435 mm; the thickness is 40 mm; the aperture of the first screw hole 211 is φ36 mm.

[0036] Specifically, the outer diameter of the circular cylinder 22 matches the inner diameter of the annular water-cooling furnace port.

[0037] Step S2, providing 6 water-cooled furnace mouth castings 3, each of which is provided with a second screw hole, and the 6 water-cooled furnace mouth castings 3 can be assembled to form a circular water-cooled furnace mouth; that is, the circular water-cooled furnace mouth is formed by splicing 6 water-cooled furnace mouth castings 3.

[0038] Step S3, such as Figure 4 and 5 As shown, each water-cooled furnace mouth casting 3 is installed in a circular ring shape on the auxiliary device 2 in the spare parts area, and the water-cooled furnace mouth casting 3 is fixed to the lower surface of the circular ring plate by a lifting eye screw 1 to form a combined structure; specifically, the inner ring of the water-cooled furnace mouth casting 3 is tightly attached to the upper side of the auxiliary device 2, and the water-cooled furnace mouth and the auxiliary device 2 are fixedly connected together by a lifting eye screw 1 with a diameter of 36 mm.

[0039] Step S4, before stopping the furnace, use an overhead crane to lift the truck crane 5 (25T truck crane) to the platform in front of the converter furnace (9-meter platform in front of the furnace), and use an overhead crane to lift the combined structure to the platform in front of the furnace through the lifting eye screw 1.

[0040] Step S5, after the furnace is shut down, a power outage sign is issued, and the old water-cooled furnace mouth and skirt plate on the converter are removed. After removal, personnel are evacuated to a safe area, and after power is supplied, the converter furnace mouth 6 is moved to the front of the furnace, and the power outage sign is issued again after the converter furnace mouth 6 is moved to the front of the furnace.

[0041] Step S6, as Figure 6 As shown, the combined structure is lifted by a car crane 5 through the eye screws 1 and connected to the converter furnace mouth 6, and the water-cooling furnace mouth water pipe is placed in the U-shaped pipe groove of the converter furnace mouth 6.

[0042] Step S7, after the docking, each water-cooled furnace mouth casting 3 is fixedly connected to the converter furnace mouth 6 using square head bolts 4. Specifically, the diameter of the square head bolts 4 is 48 mm.

[0043] Step S8, removing the 36 mm lifting screw 1 connecting the auxiliary device 2 and the water-cooled furnace mouth casting 3 to remove the auxiliary device 2.

[0044] After the auxiliary device 2 is removed, a countersunk screw with a diameter of 36 mm is used to seal the second screw hole with a diameter of 36 mm on the water-cooled furnace mouth to prevent the entry of slag. The auxiliary device 2 is then lifted away, and the truck crane 5 is moved away from the 9-meter platform in front of the furnace and placed at 0 meters.

[0045] Those skilled in the art should understand that those skilled in the art can implement variations by combining the prior art and the above embodiments, which will not be described in detail here. Such variations do not affect the essential content of the present invention, and will not be described in detail here.

[0046] The above describes the preferred embodiments of the present invention. It should be understood that the present invention is not limited to the above-mentioned specific embodiments, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can use the above-disclosed methods and technical contents to make many possible changes and modifications to the technical solutions of the present invention without departing from the scope of the technical solutions of the present invention, or modify them into equivalent embodiments of equivalent changes, which does not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solutions of the present invention are still within the scope of protection of the technical solutions of the present invention.

Claims

1. A method for quickly installing a water-cooled converter mouth, characterized in that: The method comprises the following steps: A water-cooled furnace mouth installation auxiliary device is manufactured, the water-cooled furnace mouth installation auxiliary device comprises a circular cylinder and a circular ring plate located at the top of the circular cylinder, the edge of the circular cylinder and the edge of the inner hole of the circular ring plate are integrally connected and formed, and a plurality of first screw holes are opened on the circular ring plate; Providing a plurality of water-cooled furnace mouth castings, each of which is provided with a second screw hole, and the plurality of water-cooled furnace mouth castings can be assembled to form a circular water-cooled furnace mouth; In the spare parts area, each of the water-cooled furnace mouth castings is installed in a circular shape on the auxiliary device, and the water-cooled furnace mouth casting is fixed to the lower surface of the circular ring plate by eye screws to form a combined structure; Before stopping the furnace, the automobile is hoisted to the platform in front of the converter by using an overhead crane, and the combined structure is hoisted to the platform in front of the converter by using an overhead crane; After the furnace is shut down, the power outage sign is issued, and the old water-cooled furnace mouth and skirt plate on the converter are removed. After the power is supplied, the converter mouth is moved to the front of the furnace, and the power outage sign is issued again after the converter mouth is moved to the front of the furnace; The combined structure is lifted by a truck crane and connected to the converter furnace mouth, and the water-cooling furnace mouth water pipe is placed into the U-shaped pipe groove of the converter furnace mouth; The water-cooled furnace mouth castings are fixedly connected to the converter furnace mouth; The auxiliary device is removed by removing the eye screws connecting the auxiliary device and the water-cooled furnace mouth casting.

2. The method for quickly installing a water-cooled converter mouth according to claim 1, characterized in that: After the auxiliary device is removed, the second screw hole on the water-cooling furnace port is sealed with a countersunk screw.

3. The method for quickly installing a water-cooled converter port according to claim 1, characterized in that: Each of the water-cooled furnace mouth castings is fixedly connected to the converter furnace mouth by square head bolts.

4. The method for quickly installing a water-cooled converter mouth according to claim 1, characterized in that: The combined structure is hoisted to the furnace front platform by a crane through the eye screws.

5. The method for quickly installing a water-cooled converter port according to claim 1, characterized in that: After the auxiliary device is removed, the auxiliary device is lifted away.

6. The method for quickly installing a water-cooled converter port according to claim 1, characterized in that: The auxiliary device is a steel structure.

7. The method for quickly installing a water-cooled converter port according to claim 1, characterized in that: The annular water-cooling furnace mouth is formed by splicing 6 water-cooling furnace mouth castings.

8. The method for quickly installing a water-cooled converter port according to claim 1, characterized in that: The outer diameter of the circular cylinder is matched with the inner diameter of the annular water-cooling furnace opening.

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