A ladle argon supply system docking device

Abstract

The utility model discloses a kind of steel ladle argon supply system butt joint device, including upper device and with the lower device of symmetrical arrangement of upper device, the upper device includes upper flat plate, 1 or is two parallelly arranged first connecting component is connected on the upper flat plate, the first connecting component is connected with gas pipeline in detachable mode, the lower device includes lower flat plate, 1 or is two parallelly arranged second connecting component is connected on the lower flat plate, the second connecting component is connected with gas pipeline in detachable mode, the lower device further includes pedestal, hydraulic damper is arranged between the lower flat plate and pedestal, recessed groove space is formed between the lower flat plate and opposite the upper flat plate.

Description

Technical Field

[0001] This utility model belongs to the technical field of steel smelting and refining equipment, specifically relating to a docking device for a ladle argon gas supply system. Background Technology

[0002] Bottom-blowing argon / nitrogen in the ladle is a crucial step in steelmaking. Bottom gas is blown into the molten steel, dispersing as bubbles that rise to the surface. Driven by buoyancy, the surrounding molten steel flows within the ladle, accelerating the melting of alloys and solvents added to the steel. This promotes uniformity in steel composition and temperature, facilitates the buoyancy of inclusions, and removes non-metallic inclusions and harmful gases, ultimately refining the molten steel.

[0003] The existing technology has safety hazards during operation. Manual insertion and removal of argon gas flexible strips requires entering a high-temperature zone (molten steel temperature > 1600℃), which poses risks of slag splashing and burns. With 25,000 operations per year, the LEC risk value reaches 450 (major risk). It is also inefficient: a single insertion and removal takes 22 seconds, which leads to a 0.5-minute extension of the smelting cycle of a single furnace, resulting in a significant loss of annual production capacity. It is also costly: 300 argon gas flexible strips are consumed annually (each costing 450 yuan), with spare parts costing 135,000 yuan per year. The flexible strips have poor high-temperature resistance and are easily burned by slag splashing.

[0004] Related technical limitations: The current supply of argon gas to ladle cars mostly relies on manual operation of hose connections. Although there have been some attempts at automation, there are shortcomings such as insufficient high-temperature resistance and lack of a rapid switching mechanism.

[0005] In view of the above factors, a docking device for a ladle argon supply system is provided, which is a safe and high-temperature resistant argon docking system that eliminates high-risk manual operations, reduces equipment wear and tear, and improves refining efficiency. Utility Model Content

[0006] The purpose of this invention is to provide a docking device for a ladle argon gas supply system to solve the problems mentioned in the background art.

[0007] The purpose of this utility model is achieved through the following technical solution: a docking device for a ladle argon gas supply system, comprising an upper device and a lower device symmetrically arranged with the upper device, the upper device comprising an upper plate, and one or two parallel first connecting components connected to the upper plate, the first connecting components being detachably connected to the gas outlet pipeline.

[0008] The lower device includes a lower plate, on which one or two parallel second connecting components are connected. The second connecting components are detachably connected to the air intake pipe.

[0009] The lower device also includes a base, and a hydraulic buffer is provided between the lower plate and the base. A groove space is formed between the lower plate and the upper plate opposite to it.

[0010] Furthermore, the groove space forms one or two that are respectively connected to the air outlet pipe or the air inlet pipe;

[0011] A partition is provided within the groove space, and sealing strips are provided on both sides of the upper end of the partition. The partition is fixed on the lower plate, and a mating groove is provided on the upper plate opposite to the lower plate to cooperate with the partition.

[0012] Furthermore, the first connecting assembly includes an air outlet pipe connected to the air outlet pipeline via a union joint, wherein one end of the air outlet pipe away from the air outlet pipeline is connected to the steel ladle permeable brick;

[0013] The first connecting assembly is equipped with a filter, a one-way valve, and a regulating valve group, which are installed on the air outlet pipe from right to left.

[0014] Furthermore, the first regulating valve group includes two sets of first manual shut-off valves and first solenoid valves arranged in parallel;

[0015] The first solenoid valve is connected to an external PLC controller via a connecting cable.

[0016] Furthermore, the second connection assembly includes a metal hose and an air intake pipe connected to the metal hose via a union, and the second regulating valve assembly is installed on the air intake pipe.

[0017] Furthermore, the second regulating valve assembly includes two sets of second manual shut-off valves and second solenoid valves arranged in parallel;

[0018] The second solenoid valve is connected to an external PLC for control via a connecting cable.

[0019] Furthermore, branch pipes are provided on the air outlet pipe and the air inlet pipe, and the end of the branch pipe is connected to a mechanical manual interface.

[0020] Furthermore, the upper plate is bolted to the ladle side support, and a heat insulation layer is provided between the upper plate and the ladle side support. The heat insulation layer includes a silica nanocomposite pad and a nano silicone heat insulation pad.

[0021] The thickness of the silica nanocomposite pad is 20mm, and the nano-silicone heat insulation pad adopts a double-layer structure.

[0022] The silica nanocomposite pad and the nano silicone heat insulation pad are stacked and placed in the groove of the upper plate. Both sides of the silica nanocomposite pad and the nano silicone heat insulation pad are coated with a high-temperature adhesive, which is an inorganic high-temperature adhesive.

[0023] Furthermore, a channel is provided on the steel ladle side support, which extends to the position of the heat insulation layer. A temperature sensor is installed in the channel. The temperature sensor is a thermocouple temperature sensor, and the temperature sensor is connected to an external PLC controller via wired or wireless means.

[0024] The control method for the docking device of the ladle argon supply system specifically includes the following steps;

[0025] The steel ladle is hoisted to the position of the steel ladle car using hoisting equipment. The upper device and the lower device symmetrically arranged with the upper device are connected together. An installation groove is opened on the end face of the lower device for installing the sealing ring.

[0026] A positioning block is connected to the side support of the ladle by welding. The positioning block is rectangular or cylindrical and mates with the alignment hole on the side car / saddle of the ladle.

[0027] The ladle car has a storage space to accommodate the lower device. The lower device is raised and lowered by an electric push rod, and the output end of the electric push rod is connected to the base.

[0028] The first manual shut-off valve and the first solenoid valve of the first regulating valve group can be used to achieve manual control or control via the first solenoid valve being connected to an external PLC controller through a connecting line.

[0029] The second manual shut-off valve and the second solenoid valve of the second regulating valve group can be used for manual control or control via an external PLC connected to the second solenoid valve through a connecting line.

[0030] Temperature sensors, which are thermocouple-type temperature sensors, are installed inside the passageway. These sensors are connected to an external PLC controller via wired or wireless means, allowing the PLC controller to display and monitor the insulation layer status in real time.

[0031] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0032] This utility model adopts a single or dual gas path design: independent argon / nitrogen channels to match the needs of different refining processes (converter / LF / RH furnace), and adopts manual / automatic dual modes, retaining a mechanical manual interface, and switching to manual operation within 30 seconds in case of automatic failure.

[0033] This invention relates to the connection of argon gas pipelines between ladles and ladle cars, and is suitable for inert gas supply systems in refining processes such as converters, LF furnaces, and RH furnaces.

[0034] This utility model provides a safe and high-temperature resistant docking device that eliminates high-risk manual operations, reduces equipment wear and tear, and improves refining efficiency. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the overall connection of this utility model;

[0036] Figure 2 This is a schematic diagram of the lower device on the ladle car of this utility model;

[0037] Figure 3 This is a schematic diagram showing the cooperation between the upper and lower parts of this utility model;

[0038] Figure 4 This is a schematic diagram of the first connecting component of this utility model;

[0039] Figure 5 This is a schematic diagram of the connection between the first connecting component and the PLC controller of this utility model;

[0040] Figure 6 This is a schematic diagram of the first regulating valve assembly of this utility model;

[0041] Figure 7 This is a schematic diagram of the second regulating valve assembly of this utility model;

[0042] Figure 8 This is a schematic diagram of the lower part of the dual-ventilation structure of this utility model;

[0043] Figure 9 This is a schematic diagram of the overall connection of the dual-ventilation structure of this utility model;

[0044] Figure 10 This is a schematic diagram of the fit between the partition and the docking groove of this utility model;

[0045] Figure 11 This is a utility model Figure 10 Enlarged diagram;

[0046] Figure 12 This is a schematic diagram of the structure of the heat insulation layer of this utility model. Detailed Implementation

[0047] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0048] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0049] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0050] like Figure 1-12 As shown, a docking device for a ladle argon gas supply system includes an upper device 1 and a lower device 2 symmetrically arranged with the upper device 1. The upper device 1 includes an upper plate 3, and one or two parallel first connecting components 4 are connected to the upper plate 3. The first connecting components 4 are detachably connected to the gas outlet pipe 5.

[0051] The lower device 2 includes a lower plate 6, on which one or two parallel second connecting components 7 are connected. The second connecting components 7 are detachably connected to the air intake pipe 8.

[0052] The lower device 2 also includes a base 9, and a hydraulic buffer 10 is provided between the lower plate 6 and the base 9. A groove space A is formed between the lower plate 6 and the upper plate 3.

[0053] In order to facilitate the formation of a closed space for air conduction during use, the groove space A is formed into one or two, which are respectively connected to the air outlet pipe 5 or the air inlet pipe 8;

[0054] The groove space A is provided with a partition A1, and sealing strips A2 are provided on both sides of the upper end of the partition A1. The partition A1 is fixed on the lower plate 6, and a mating groove A3 is provided on the upper plate 3 opposite to the lower plate 6 to cooperate with the partition A1.

[0055] To facilitate air conduction via the first connecting component 4 during use, the first connecting component 4 includes an air outlet pipe 11 connected to the air outlet pipe 5 via a union connector, and the end of the air outlet pipe 11 away from the air outlet pipe 5 is connected to the steel ladle permeable brick.

[0056] The first connecting component 4 is provided with a filter 12, a one-way valve 13, and a regulating valve group 14, which are installed on the air outlet pipe 11 from right to left.

[0057] To facilitate manual and automatic switching during use, the first regulating valve group 14 includes two sets of first manual shut-off valves 15 and first solenoid valves 16 arranged in parallel.

[0058] The first solenoid valve 16 is connected to an external PLC controller via a connecting cable.

[0059] To facilitate air intake conduction via the second connecting assembly 7 during use, the second connecting assembly 7 includes a metal hose 17 and an air intake pipe 18 connected to the metal hose 17 via a union joint, and the second regulating valve assembly 19 is installed on the air intake pipe 18.

[0060] To facilitate manual and automatic switching during use, the second regulating valve group 19 includes two sets of parallel-arranged second manual shut-off valves 20 and second solenoid valves 21.

[0061] The second solenoid valve 21 is connected to an external PLC for control via a connecting cable.

[0062] To facilitate manual operation during use, branch pipes 22 are provided on the air outlet pipe 11 and the air inlet pipe 18, and the end of the branch pipe 22 is connected to a mechanical manual interface.

[0063] In order to effectively isolate conductive heat during use, reduce the temperature of the lower device, and improve the service life of the sealing position, the upper plate 3 is bolted to the steel ladle side support. A heat insulation layer is provided between the upper plate 3 and the steel ladle side support. The heat insulation layer includes a silica nanocomposite pad and a nano silicone heat insulation pad.

[0064] The thickness of the silica nanocomposite pad is 20mm, and the nano-silicone heat insulation pad adopts a double-layer structure.

[0065] The silica nanocomposite pad and the nano silicone heat insulation pad are stacked and placed in the groove of the upper plate (3). The silica nanocomposite pad and the nano silicone heat insulation pad are coated with high-temperature adhesive on both sides. The high-temperature adhesive is an inorganic high-temperature adhesive.

[0066] To facilitate monitoring of temperature changes in the insulation layer during use via a temperature sensor, a channel is provided on the steel ladle side support, extending to the insulation layer. A temperature sensor, which is a thermocouple-type temperature sensor, is installed within the channel and is connected to an external PLC controller via wired or wireless means.

[0067] This utility model has two structural forms: single-air or dual-air-path design. In the single-air-path structure, a first connecting component 4 is connected to the upper plate 3, and the first connecting component 4 is detachably connected to the air outlet pipe 5; a second connecting component 7 is connected to the lower plate 6, which is arranged in parallel, and the second connecting component 7 is detachably connected to the air inlet pipe 8.

[0068] The first connecting assembly 4 is equipped with a filter 12, a one-way valve 13, and a regulating valve group 14. The filter 12, one-way valve 13, and first regulating valve group 14 are installed on the air outlet pipe 11 from right to left. The first regulating valve group 14 includes two sets of first manual shut-off valves 15 and first solenoid valves 16 arranged in parallel. The first solenoid valves 16 are connected to an external PLC controller via connecting lines. The second connecting assembly 7 includes a metal hose 17 and an air inlet pipe 18 connected to the metal hose 17 via a union connector. The second regulating valve group 19 is installed on the air inlet pipe 18. The second regulating valve group 19 includes two sets of second manual shut-off valves 20 and second solenoid valves 21 arranged in parallel. The second solenoid valves 21 are connected to an external PLC controller via connecting lines.

[0069] In the dual-air-path structure, two first connecting components 4 are connected to the upper plate 3, and the first connecting components 4 are detachably connected to the air outlet pipe 5; two parallel second connecting components 7 are connected to the lower plate 6, and the second connecting components 7 are detachably connected to the air inlet pipe 8.

[0070] In the dual air circuit, the first connecting component 4 and the second connecting component 7 correspond to different groove spaces, which are separated by a partition.

[0071] The first connecting assembly 4 is equipped with a filter 12, a one-way valve 13, and a regulating valve group 14. The filter 12, one-way valve 13, and first regulating valve group 14 are installed on the air outlet pipe 11 from right to left. The first regulating valve group 14 includes two sets of first manual shut-off valves 15 and first solenoid valves 16 arranged in parallel. The first solenoid valves 16 are connected to an external PLC controller via connecting lines. The second connecting assembly 7 includes a metal hose 17 and an air inlet pipe 18 connected to the metal hose 17 via a union connector. The second regulating valve group 19 is installed on the air inlet pipe 18. The second regulating valve group 19 includes two sets of second manual shut-off valves 20 and second solenoid valves 21 arranged in parallel. The second solenoid valves 21 are connected to an external PLC controller via connecting lines.

[0072] The control method for the docking device of the ladle argon supply system specifically includes the following steps;

[0073] The steel ladle is hoisted to the position of the steel ladle car using hoisting equipment. The upper device and the lower device symmetrically arranged with the upper device are connected together. An installation groove is opened on the end face of the lower device for installing the sealing ring.

[0074] A positioning block is connected to the side support of the ladle by welding. The positioning block is rectangular or cylindrical and mates with the alignment hole on the side car / saddle of the ladle.

[0075] The ladle car has a storage space to accommodate the lower device, which is raised and lowered by an electric push rod whose output end is connected to the base.

[0076] When the upper device and the lower device are engaged, the lower device retracts into the receiving space via an electric push rod. After the positioning block of the ladle side bracket engages with the alignment hole on the ladle side car / saddle seat, the lower device is pushed upward via an electric push rod to engage with the upper device.

[0077] The first manual shut-off valve and the first solenoid valve of the first regulating valve group can be used to achieve manual control or control via the first solenoid valve being connected to an external PLC controller through a connecting line.

[0078] The second manual shut-off valve and the second solenoid valve of the second regulating valve group can be used for manual control or control via an external PLC connected to the second solenoid valve through a connecting line.

[0079] Temperature sensors, which are thermocouple-type temperature sensors, are installed inside the passageway. These sensors are connected to an external PLC controller via wired or wireless means, allowing the PLC controller to display and monitor the insulation layer status in real time.

[0080] The application of the control method for the docking device of the ladle argon supply system involves applying the above-mentioned control method for the docking of the argon pipeline between the ladle and the ladle car. This method is suitable for the inert gas supply system of refining processes such as converters, LF furnaces, and RH furnaces.

[0081] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0082] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A docking device for a ladle argon gas supply system, comprising an upper device (1) and a lower device (2) symmetrically arranged with respect to the upper device (1), characterized in that: The upper device (1) includes an upper plate (3), and one or two first connecting components (4) arranged in parallel are connected to the upper plate (3). The first connecting components (4) are detachably connected to the air outlet pipe (5). The lower device (2) includes a lower plate (6), on which one or two parallel second connecting components (7) are connected. The second connecting components (7) are detachably connected to the air intake pipe (8). The lower device (2) also includes a base (9), and a hydraulic buffer (10) is provided between the lower plate (6) and the base (9). A groove space (A) is formed between the lower plate (6) and the upper plate (3) opposite to it.

2. The docking device for the ladle argon gas supply system according to claim 1, characterized in that: The groove space (A) forms one or two that are respectively connected to the air outlet pipe (5) or the air inlet pipe (8); The groove space (A) is provided with a partition (A1), and sealing strips (A2) are provided on both sides of the upper end of the partition (A1). The partition (A1) is fixed on the lower plate (6), and a mating groove (A3) is provided on the upper plate (3) opposite to the lower plate (6) to cooperate with the partition (A1).

3. The docking device for the ladle argon supply system according to claim 2, characterized in that: The first connecting component (4) includes an air outlet pipe (11) connected to the air outlet pipe (5) via a union connector, and the end of the air outlet pipe (11) away from the air outlet pipe (5) is connected to the steel ladle permeable brick. The first connecting assembly (4) is provided with a filter (12), a one-way valve (13), and a regulating valve group (14), which are installed on the air outlet pipe (11) from right to left.

4. The docking device for the ladle argon gas supply system according to claim 3, characterized in that: The first regulating valve group (14) includes two sets of first manual shut-off valves (15) and first solenoid valves (16) arranged in parallel; The first solenoid valve (16) is connected to an external PLC controller via a connecting line.

5. The docking device for the ladle argon gas supply system according to claim 4, characterized in that: The second connection assembly (7) includes a metal hose (17) and an air intake pipe (18) connected to the metal hose (17) via a union, wherein a second regulating valve assembly (19) is installed on the air intake pipe (18).

6. The docking device for the ladle argon supply system according to claim 5, characterized in that: The second regulating valve group (19) includes two sets of second manual shut-off valves (20) and second solenoid valves (21) arranged in parallel; The second solenoid valve (21) is connected to an external PLC for control via a connecting line.

7. The docking device for the ladle argon supply system according to claim 6, characterized in that: Branch pipes (22) are provided on the air outlet pipe (11) and the air inlet pipe (18), and the end of the branch pipe (22) is connected to a mechanical manual interface.

8. The docking device for the ladle argon supply system according to claim 7, characterized in that: The upper plate (3) is bolted to the steel ladle side support. A heat insulation layer is provided between the upper plate (3) and the steel ladle side support. The heat insulation layer includes a silica nanocomposite pad and a nano silicone heat insulation pad. The thickness of the silica nanocomposite pad is 20mm, and the nano-silicone heat insulation pad adopts a double-layer structure. The silica nanocomposite pad and the nano silicone heat insulation pad are stacked and placed in the groove of the upper plate (3). The silica nanocomposite pad and the nano silicone heat insulation pad are coated with high-temperature adhesive on both sides. The high-temperature adhesive is an inorganic high-temperature adhesive.

9. The docking device for the ladle argon gas supply system according to claim 8, characterized in that: A channel is provided on the side support of the steel ladle, which extends to the position of the heat insulation layer. A temperature sensor is installed in the channel. The temperature sensor is a thermocouple temperature sensor and is connected to an external PLC controller via wired or wireless means.

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