WO2022267596A1 - 一种用于钢包透气上水口座砖的吹氩系统及其安装方法 - Google Patents

一种用于钢包透气上水口座砖的吹氩系统及其安装方法 Download PDF

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WO2022267596A1
WO2022267596A1 PCT/CN2022/083821 CN2022083821W WO2022267596A1 WO 2022267596 A1 WO2022267596 A1 WO 2022267596A1 CN 2022083821 W CN2022083821 W CN 2022083821W WO 2022267596 A1 WO2022267596 A1 WO 2022267596A1
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Prior art keywords
ladle
connecting pipe
upper nozzle
argon blowing
blowing system
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PCT/CN2022/083821
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English (en)
French (fr)
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武光君
张佩
武文健
赵燕
王金洪
杜鹏
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莱芜钢铁集团银山型钢有限公司
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Publication of WO2022267596A1 publication Critical patent/WO2022267596A1/zh

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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/04—Removing impurities by adding a treating agent
    • C21C7/072—Treatment with gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/02—Linings

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  • the invention relates to the technical field of steelmaking technology in iron and steel metallurgy, in particular to an argon blowing system and an installation method for a ladle ventilating upper nozzle seat brick.
  • the argon blowing metallurgical technology of the ladle's breathable upper nozzle block is to form a ring-shaped micro-bubble air curtain barrier around the upper nozzle.
  • Chinese patent document CN 201678699 U discloses a ladle anti-seepage argon blowing system, including a gas source, which is connected to the argon gas inlet of the ladle breathable brick through a gas buffer tank and a one-way inlet valve in turn.
  • Gas buffer tank and one-way valve when the gas source is turned off to stop argon blowing, the pipe section behind the pipeline valve is under positive pressure to close the one-way valve, preventing molten steel from entering the slit of the permeable brick due to negative pressure, so that the permeable brick will not Corroded due to seepage, avoiding steel leakage accidents in the ladle.
  • connection construction of the argon blowing air intake pipeline of this device is relatively difficult.
  • the reflow rate of the permeable bricks is low due to the blockage of the permeable working surface of the permeable bricks; and the prior art is due to welding construction.
  • the dismantling and assembling are difficult, and the joints of the pipeline are also prone to air leakage due to welding construction, resulting in unsatisfactory argon blowing effect and unable to meet the air washing conditions in the ladle.
  • the object of the present invention is to overcome the deficiencies of the prior art above, and provide an argon blowing system and its installation method for ladle ventilating upper nozzle block.
  • the return valve simplifies the installation process of the argon blowing inlet pipeline, solves the problems of pipeline leakage and "gas backflow", significantly improves the recirculation rate of the ladle venting upper nozzle block, and realizes the cycle of the argon blowing inlet pipeline use.
  • the present invention adopts the following technical solutions:
  • An argon blowing system for a ventilating upper nozzle block of a ladle comprising a ladle, the ladle is provided with a ventilating upper nozzle block of a ladle, an air inlet pipe is arranged inside the ladle ventilating nozzle block, and the argon blowing system further includes Rotary connecting pipe fittings, connecting pipes, high temperature check valves, external pipes, quick connectors connected in sequence, the connection between the connecting pipe and the quick connector is a detachable connection;
  • the rotating connection pipe includes the first revolving female port, the first piston rod, the inner connecting pipe, the second piston rod and the second revolving female port connected in sequence, wherein the first revolving female port is connected to the intake pipe Connection, the second revolving female port is connected to the connecting pipe, the first revolving female port and the air inlet pipe of the ladle ventilating upper nozzle seat brick are also detachable connections between the second revolving female port and the connecting pipe.
  • the inner connection pipe is L-shaped, the first piston rod is horizontal, the second piston rod is vertical, and the rotating connecting pipe is L-shaped as a whole to realize the transformation of airflow from vertical to horizontal , to meet the adaptation of the argon blowing pipeline and the existing commonly used nozzle block, effectively broadening the scope of application of the argon blowing system.
  • the connecting pipe is L-shaped, and the high-temperature check valve, external connecting pipe, and quick connector are arranged outside the ladle and arranged along the horizontal direction.
  • the ladle is provided with a positioning hole, and the connecting pipe passes through the positioning hole and is connected with the High temperature check valve connection. Ensure that the sliding nozzle mechanism is arranged in parallel with the inlet end of the argon blowing system, so as to facilitate the connection between the pipeline and the external gas source when blowing argon.
  • connection mode between the connecting pipe and the quick connector is threaded connection
  • connection between the first revolving female port and the intake pipe and between the second revolving female port and the connecting pipe are all threaded connections. All important parts in the argon blowing system are connected by threads, which not only ensures the sealing effect, but also facilitates the maintenance of each component in the system during use.
  • a first positioning plate and a second positioning plate are fixed on the connecting pipe, the first positioning plate and the second positioning plate are fixed between the connecting pipe and the ladle, and the distance between the first positioning plate and the second positioning plate is equal to the distance between the connecting pipe and the second positioning plate. 2/3 to 3/4 of the length of the horizontal section of the pipe. Further, the second positioning plate is fixed at the bend of the connecting pipe, and the first positioning plate is located between the second positioning plate and the high temperature check valve. Two positioning plates are used to effectively limit the pipeline and ladle in the argon blowing system to prevent relative displacement between the pipeline and the ladle during use, which will affect the metallurgical effect of argon blowing.
  • the materials of the first positioning plate and the second positioning plate are both Q235, and the thickness is 20mm-30mm, which can effectively guarantee the reinforcement effect on the pipeline.
  • the high temperature check valve has excellent performances such as high temperature resistance ⁇ 650 °C, hard seal structure, small cracking pressure ⁇ 0.1 bar, low leakage rate, etc., and the high temperature check valve of Swiss FC-Technik company with a model specification of PN25FBSP3/4 inches is selected.
  • Valve; the material of the outer connecting pipe, connecting pipe, inner connecting pipe and rotating connecting pipe fittings are all heat-resistant stainless steel, the use of heat-resistant stainless steel ensures the service life of each component in the argon blowing system, so that the system can be used repeatedly.
  • the present invention also provides an installation method of an argon blowing system used in a ladle ventilating upper nozzle seat brick in a primary ladle,
  • the primary ladle refers to the working lining of the ladle bottom, including slag line magnesia carbon bricks, cladding wall castables, and ladle bottom castables, which are all used for the first time after replacement or nesting.
  • the present invention also provides an installation method of the argon blowing system used in the ladle ventilating upper nozzle seat brick in the secondary ladle,
  • the secondary package refers to the primary package installed with the argon blowing pipeline, which goes online to produce 45 ⁇ 50 furnaces and goes offline for minor repairs.
  • the minor repairs include replacing the slag line magnesia carbon bricks, ventilating upper nozzle seat bricks, and repairing the working lining of the ladle bottom.
  • the waterproof sticker is in the shape of a ring, and its size is the same as that of the air-permeable surface of the ladle's breathable upper nozzle block. It is cut from a commercially available ring-shaped waterproof sticker or waterproof self-adhesive label paper.
  • the argon blowing system provided by the present invention uses a rotary connection pipe fitting, and the connections at both ends are detachable connections.
  • the connection method is simple, easy to disassemble and assemble, and the connection and sealing performance is good, which shortens the overall installation of the argon blowing inlet pipeline Time, through the use of high-temperature check valves, the problem of failure of the sealing effect caused by conventionally selected check valves and one-way valves in the existing argon-blowing intake pipelines due to their inability to withstand high temperatures (operating temperature ⁇ 400°C) has been effectively solved, making a breakthrough Under the high temperature operating conditions (400°C ⁇ 600°C), the argon blowing inlet pipeline is disconnected from the argon gas source, which is a common problem in the industry caused by the "gas backflow" that causes steel penetration of the ladle ventilating upper nozzle block, and realizes the ladle ventilating water supply
  • the recovery rate of the mouth block is 100%, which shortens the oxygen cleaning time of the la
  • the pipeline provided by the present invention is located in the part outside the ladle, that is, the bend of the connecting pipe is arranged in parallel with the quick connector and the sliding nozzle mechanism, which is beneficial to realize the connection and disconnection of the quick connector and the hanging of the oil cylinder of the sliding nozzle mechanism. , The picking operation is carried out synchronously, which simplifies the operation steps and reduces the operation difficulty of the operator;
  • each pipeline used in the present invention is heat-resistant stainless steel, which is not easy to deform, realizes the repeated recycling of the pipeline as a whole, reduces material costs and use and maintenance costs, and reduces the cost for the enterprise while ensuring the use effect. The cost.
  • Fig. 1 is a schematic diagram of the installation and connection of the argon blowing pipeline installation and the ladle ventilation upper nozzle seat brick in the embodiment of the present invention
  • Fig. 2 is a structural schematic diagram of a rotating connection pipe fitting in an embodiment of the present invention
  • Fig. 3 is a schematic structural view of a screwed socket in an embodiment of the present invention, wherein (a) is a front view, and (b) is a cross-sectional view of A-A in Fig. (a);
  • an argon blowing system for a ladle ventilating upper nozzle block includes a ladle, a ladle ventilating upper nozzle block 10 is arranged inside the ladle, an air inlet pipe 9 is arranged inside the ladle ventilating upper nozzle block 10, It also includes rotating connecting pipe fittings 6, connecting pipes 4, high-temperature check valve 3, external connecting pipe 2, quick connector 1 connected in sequence, and the quick connector 1 is connected to an external argon gas source; °C, hard seal structure, small opening pressure ⁇ 0.1bar, low leakage rate and other excellent performances, the Swiss FC-Technik company's model specification is PN25FBSP3/4 inch high temperature check valve, high temperature check valve 3 is used to ensure argon blowing The gas in the pipeline flows in one direction to prevent molten steel from seeping into the nozzle block due to "gas backflow" in the intake pipeline after the argon gas source is cut off.
  • the rotary connection pipe 6 includes a first revolving female port 16 , a first piston rod 17 , an inner connecting pipe 18 , a second piston rod 19 and a second revolving female port 20 connected in sequence, Wherein the first revolving female port 16 is connected with the intake pipe 9, and the second revolving female port 20 is connected with the connecting pipe.
  • the inner connection pipe 18 is L-shaped, the first piston rod 17 is horizontal, and the second piston rod 19 is vertical; the connecting pipe 4 is L-shaped, the high-temperature check valve 3, the external connection pipe 2, and the quick connector 1 They are all arranged outside the ladle and arranged along the horizontal direction.
  • the ladle is provided with a positioning hole 7.
  • the positioning hole 7 is set at the bottom cladding 11 of the ladle and vertically penetrates the bottom cladding 11 of the ladle.
  • the connecting pipe 4 passes through the positioning hole 7. And be connected with high temperature check valve 3.
  • the connection between the connecting pipe and the quick joint 1 is a detachable connection.
  • the first revolving female port 16 and the ladle ventilating upper nozzle block 10 have their own air intake pipe 9 and the second revolving female port 20 and the connecting pipe.
  • the 4 are also detachably connected.
  • the detachable connection is a threaded connection. All important parts of the argon blowing pipeline are connected by threads, which not only ensures the sealing effect, but also facilitates the maintenance of various components in the pipeline during use.
  • the first revolving female port 16 and the first piston rod 17 are identical to the second revolving female port 20 and the second piston rod 19 respectively.
  • the piston rod is T-shaped as a whole, including the rod head and the shaft, and has a through hole for gas circulation inside;
  • the opening through which the rod passes, the shaft of the piston rod passes through the opening of the revolving socket, and the rod head matches the size of the inner cavity of the revolving socket and is stuck inside the opening.
  • the extended part of the shaft of the piston rod is inserted into the inner connecting pipe 18, and the outer diameter of the shaft matches the inner diameter of the inner connecting pipe 18, and the connection between the shaft and the inner connecting pipe 18 is sealed and reinforced by welding.
  • the outer connecting pipe 2, the connecting pipe 4, the inner connecting pipe 18 and the rotating connecting pipe fitting 6 are made of heat-resistant stainless steel, wherein the outer diameter of the outer connecting pipe and the connecting pipe is 21.34mm, and the wall thickness is 2mm, and the outer diameter of the inner connecting pipe is 26.67mm, The wall thickness is 2mm, the internal thread specification of the screw-in female port is M30*2, and the size of the piston rod is selected to match the screw-in female port.
  • the first positioning plate 5 and the second positioning plate 8 are fixed on the connecting pipe, the first positioning plate 5 and the second positioning plate 8 are all fixed between the connecting pipe 4 and the ladle, and the first positioning plate 5 and the second positioning plate
  • the spacing of 8 is equal to 2/3 ⁇ 3/4 of the length of the horizontal section of connecting pipe 4.
  • the second positioning plate 8 is fixed at the bend of the connecting pipe 4
  • the first positioning plate 5 is located between the second positioning plate 8 and the high temperature check valve 3 .
  • Two positioning plates are used to effectively limit the entire pipeline and the ladle where it is located, so as to prevent relative displacement between the argon blowing pipeline and the bottom cladding 11 of the ladle during use.
  • the material of the first positioning plate 5 and the second positioning plate 8 are both Q235, and the thickness is 25 mm, which can effectively guarantee the reinforcement effect on the pipeline.
  • the installation method of the argon blowing system for the ventilating upper nozzle block of the ladle includes the following steps:
  • the waterproof sticker 15 used in step S3 is circular, and its size is the same as the size of the air-permeable surface of the ladle ventilating upper nozzle seat brick 10, and is cut from a commercially available circular waterproof sticker or waterproof self-adhesive label paper .
  • the installation method of the argon blowing system for the ventilating upper nozzle block of the ladle is when the ladle (i.e. the primary package) installed in Example 2 is used for a period of time to become a secondary package , the disassembly method of the argon blowing system, which specifically includes the following steps:
  • Chinese patent document CN 109732074 A discloses a ladle diffusion ring breathable upper nozzle seat brick and its argon blowing metallurgical method, which provides a structure and connection method of an argon blowing pipeline.
  • Chinese patent document CN 111774559 A discloses a device and an application method for improving the blow-through rate of the ladle bottom blowing air brick, and also provides a structure and connection method of an argon blowing pipeline.
  • the argon blowing pipeline connection method provided by the present invention is simple, easy to disassemble and assemble (short installation time), and solves the problems of comparative example 1 (CN 109732074 A) and comparative example 2 (CN 111774559 A)
  • the given argon-blowing inlet pipeline is difficult to disassemble and assemble due to welding construction, which greatly shortens the installation time of the argon-blowing inlet pipeline; realizes the recycling of the argon-blowing inlet pipeline, and solves the problem of The "gas backflow" in the road caused the problem that the steel ladle ventilating upper nozzle block could not be completely reconnected; the reflow rate of 10% of the ladle ventilating upper nozzle block was realized, thus shortening the ladle ventilating upper nozzle block Burning oxygen cleaning time has improved the average life-span of ladle breathable upper nozzle block 10.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
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Abstract

一种用于钢包透气上水口座砖（10）的吹氩系统及其安装方法，其中吹氩系统包括钢包，钢包内设有钢包透气上水口座砖（10），上水口座砖（10）内设有进气管（9），吹氩系统还包括依次连接的旋转连接管件（6）、连接管（4）、高温止回阀（3）、外接管（2）和快速接头（1），旋转连接管件（6）的一端连接至进气管（9）、另一端与连接管（4）连接，旋转连接管件（6）和连接管（4）均呈L形，实现钢包外的管路与滑动水口机构平行设置，实现快速接头（1）的连接、断开操作与滑动水口机构的油缸的挂、摘操作同步进行，简化了操作步骤，降低了操作人员的操作难度。管路中各组件材质均为耐热不锈钢，不易变形，实现了管路整体的重复循环利用，降低了材料费用和使用维护成本。

Description

一种用于钢包透气上水口座砖的吹氩系统及其安装方法 技术领域
本发明涉及钢铁冶金中炼钢工艺技术领域，具体涉及一种用于钢包透气上水口座砖的吹氩系统及其安装方法。
背景技术
连铸钢包浇注过程中钢包透气上水口座砖吹氩冶金技术，是在上水口周围形成环形的微气泡气幕屏障，这些微气泡对流向钢包上水口的钢水进行气洗，促进了夹杂物的上浮去除，同时促进了钢液的循环流动，消除了连铸钢包静置过程中形成的温度梯度，攻克了连铸钢包内钢水温度分层、成分不匀、汇流旋涡下渣等行业共性难题，提高了钢水洁净度和均质化。
中国专利文献CN 201678699 U(申请号201020145666.3)公开了一种钢包防渗吹氩系统，包括气源，气源依次通过气体缓冲罐和单向进气阀连通于钢包透气砖氩气进口，通过设置气体缓冲罐和单向阀，在关闭气源停止吹氩时，管路阀后管段位正压，使单向阀关闭，避免因为负压使钢液进入透气砖狭缝，使透气砖不会因为渗液而被侵蚀，避免钢包出现漏钢事故。但此装置的吹氩进气管路的连接施工较为困难，当钢包中透气砖发生渗钢后，由于透气砖的透气工作面堵塞，透气砖的复通率较低；且现有技术由于焊接施工带来的拆、装困难，管路的各连接处同样因焊接施工容易发生漏气问题，导致吹氩效果不理想，无法满足钢包中气洗条件。
发明内容
本发明的目的是为克服上述现有技术的不足，提供一种用于钢包透气上水口座砖的吹氩系统及其安装方法，通过设置新型吹氩管路、并在管路上设置高性能止回阀，简化了吹氩进气管路的安装工艺，解决了管路漏气和“气体倒流”问题，显著提高了钢包透气上水口座砖的复通率，实现了吹氩进气管路的循环利用。
为实现上述目的，本发明采用下述技术方案：
一种用于钢包透气上水口座砖的吹氩系统，包括钢包，所述钢包内设有钢包透气上水口座砖，所述钢包透气上水口座砖内设有进气管，吹氩系统还包括依次连接的旋转连接管件、连接管、高温止回阀、外接管、快速接头，连接管至快速接头之间的连接方式为可拆卸连接；
所述旋转连接管件包括依次连接的第一旋接母口、第一活节塞杆、内接管、第二活节塞杆和第二旋接母口，其中第一旋接母口与进气管连接、第二旋接母口与连接管连接，第一旋接母口与钢包透气上水口座砖自带进气管之间和第二旋接母口和连接管之间同样为可拆卸连接。
通过设置高温止回阀保证了吹氩系统在停止通入氩气时不会因为进气管路中“气体倒流”而使透气上水口座砖因渗钢而导致无法复通，吹氩系统的管路中多处使用可拆卸连接简化了连接工艺，使系统整体的安装、拆卸时间大大缩短，而且可拆卸连接也保证了管路中各处的密封性能。
所述内接管呈L形，所述第一活节塞杆呈水平方向，所述第二活节塞杆呈竖直方向，旋转连接管件整体呈L形，实现气流自竖向至横向的变换，满足吹氩管路与现有常用水口座砖的适配，有效拓宽吹氩系统的适用范围。
所述连接管呈L形，所述高温止回阀、外接管、快速接头均设置在钢包外部并沿水平方向布置，所述钢包上设有定位孔，所述连接管穿过定位孔并与高温止回阀连接。保证滑动水口机构与吹氩系统的进气端平行布置，便于吹氩气时管路与外部气源的连接。
所述连接管至快速接头之间的连接方式为螺纹连接，所述第一旋接母口与进气管之间和第二旋接母口与连接管之间均为螺纹连接。吹氩系统中各重要部位均使用螺纹连接，不仅保证了密封效果，同时也便于使用过程中对系统中各组件的维护。
所述连接管上固定有第一定位板和第二定位板，第一定位板和第二定位板均固定在连接管和钢包之间，且第一定位板和第二定位板的间距等于连接管水平段长度的2/3～3/4。进一步的，第二定位板固定在连接管的弯折处，第一定位板位于第二定位板和高温止回阀之间。利用两定位板将吹氩系统中的管路与钢包进行有效限位，防止使用过程中管路与钢包之间产生相对位移从而影响吹氩冶金效果。
所述第一定位板和第二定位板的材质均为Q235，厚度均为20mm-30mm，有效保障对管路的加固效果。
所述高温止回阀具有耐高温即≥650℃，硬密封结构，开启压力小即≤0.1bar，泄漏率低等优良性能，选用瑞士FC-Technik公司型号规格为PN25FBSP3/4英寸的高温止回阀；所述外接管、连接管、内接管和旋转连接管件的材质均为耐热不锈钢，使用耐热不锈钢保证了吹氩系统内各组件的使用寿命，使系统能够重复循环使用。
本发明还提供了一种用于钢包透气上水口座砖的吹氩系统在一次包中的安装方法，
其中一次包是指钢包包底工作衬，包括渣线镁碳砖、包壁浇注料、包底浇注料均为更换或套浇后首次使用，
具体安装步骤如下：
S1.测量所需连接管的长度并对其两端套丝，将连接管的一端依次与高温止回阀、外接管和快速接头连接，将连接管的另一端插入钢包内部，进行钢包永久衬和钢包包底工作衬施工；
S2.待钢包永久衬、钢包包底工作衬施工完毕后，吊装钢包透气上水口座砖，将旋转连接管件中的第一旋接母口与进气管连接、第二旋接母口与连接管插入钢包的一端连接；
S3.将快速接头连通氩气气源，进行漏气检测，确认连通后的吹氩管路不漏气后，在钢包透气上水口座砖的透气面黏贴防水贴，防止浇注料中的泥浆通过透气面渗入透气孔中，影响钢包透气上水口座砖的透气性能，进而影响吹氩冶金的效果；
S4.浇注钢包透气上水口座砖安装地坑，将钢包养生、烘烤后即可上线使用。
本发明还提供了一种用于钢包透气上水口座砖的吹氩系统在二次包中的安装方法，
二次包是指安装有吹氩管路的一次包上线生产45～50炉后下线小修，小修内容包括更换渣线镁碳砖、透气上水口座砖、修补钢包包底工作衬，
具体安装步骤如下：
S1.一次包上线生产45～50炉后下线小修，采用拆包机拆除用后的渣线镁碳砖，采用风镐清理钢包透气上水口座砖安装地坑部位浇注料；
S2.先卸下旋转连接管件、后拆除用后的钢包透气上水口座砖；
S3.在钢包透气上水口座砖安装地坑内安装全新钢包透气上水口座砖，将旋转连接管件中的第一旋接母口与进气管连接、第二旋接母口与连接管插入钢包的一端连接；
S4.将快速接头连通氩气气源，进行漏气检测，确认连通后的吹氩系统不漏气后，在钢包透气上水口座砖的透气面黏贴防水贴；
S5.浇注钢包透气上水口座砖安装地坑、修补钢包包底工作衬，砌筑渣线镁碳砖，将钢包养生、烘烤后即可上线使用。
所述防水贴呈圆环形，且其尺寸与钢包透气上水口座砖的透气面尺寸相同，使用市售圆环形防水贴或使用防水不干胶标签纸裁剪而成。
本发明的有益效果是：
1)本发明提供的吹氩系统中使用旋转连接管件，其两端连接处均为可拆卸连接，连接方法简单，拆、装方便，连接密封性能好，缩短了吹氩进气管路整体的安装时间，通过使用的高温止回阀有效解决了现有吹氩进气管路中常规选择的止回阀、单向阀等由于不耐高温(使用温度＜400℃)导致的密封作用失效问题，突破了高温作业条件(400℃～600℃)下吹氩进气管路断开氩气气源后由于“气体倒流”引发钢包透气上水口座砖渗钢这一行业共性难题，实现了钢包透气上水口座砖复通率100％，由此缩短了钢包透气上水口座砖烧氧清洗时间，提高了钢包透气上水口座砖平均寿命；
2)本发明提供的管路位于钢包外部的部分，即连接管的弯折处至快速接头与滑动水口机 构平行布置，有益于实现快速接头的连接、断开操作与滑动水口机构的油缸的挂、摘操作同步进行，简化了操作步骤，降低了操作人员的操作难度；
3)本发明中使用到的各管路材质均为耐热不锈钢，不易变形，实现了管路整体的重复循环利用，降低了材料费用和使用维护成本，在保证使用效果的同时为企业降低了使用成本。
附图说明
图1是本发明实施例中吹氩管道安装与钢包透气上水口座砖的安装连接示意图；
图2是本发明实施例中旋转连接管件的结构示意图；
图3是本发明实施例中旋接母口的结构示意图，其中(a)是主视图，(b)是图(a)中A-A截面图；
其中，1.快速接头；2.外接管；3.高温止回阀；4.连接管；5.第一定位板；6.旋转连接管件；7.定位孔；8.第二定位板；9.进气管；10.透气上水口座砖；11.钢包包底包壳；12.安装地坑；13.钢包永久衬；14.钢包包底工作衬；15.防水贴；16.第一旋接母口；17.第一活节塞杆；18.内接管；19.第二活节塞杆；20.第二旋接母口。
具体实施方式
下面结合附图和实施例对本发明进一步说明。
本说明书所附图式所绘示的结构、比例、大小等，均仅用以配合说明书所揭示的内容，以供熟悉此技术的人士了解与阅读，并非用以限定本发明可实施的限定条件，故不具技术上的实质意义，任何结构的修饰、比例关系的改变或大小的调整，在不影响本发明所能产生的功效及所能达成的目的下，均应仍落在本发明所揭示的技术内容涵盖的范围内。同时，本说明书中所引用的如“上”、“下”、“左”、“右”、“中间”及“一”等的用语，亦仅为便于叙述的明了，而非用以限定本发明可实施的范围，其相对关系的改变或调整，在无实质变更技术内容下，当亦视为本发明可实施的范畴。
实施例1：
如图1所示，一种用于钢包透气上水口座砖的吹氩系统，包括钢包，钢包内设有钢包透气上水口座砖10，钢包透气上水口座砖10内设有进气管9，还包括依次连接的旋转连接管件6、连接管4、高温止回阀3、外接管2、快速接头1，快速接头1连接至外部氩气气源；高温止回阀3具有耐高温即≥650℃，硬密封结构，开启压力小即≤0.1bar，泄漏率低等优良性能，选用瑞士FC-Technik公司型号规格为PN25FBSP3/4英寸的高温止回阀，高温止回阀3用以保证吹氩管路内气体单向流动，防止切断氩气气源后由于进气管路中“气体倒流”导致钢液渗入水口座砖内。
如图2所示，旋转连接管件6包括依次连接的第一旋接母口16、第一活节塞杆17、内接管18、第二活节塞杆19和第二旋接母口20，其中第一旋接母口16与进气管9连接、第二旋接母口20与连接管连接。
内接管18呈L形，第一活节塞杆17呈水平方向，第二活节塞杆19呈竖直方向；连接管4呈L形，高温止回阀3、外接管2、快速接头1均设置在钢包外部并沿水平方向布置，钢包上设有定位孔7，定位孔7设置在钢包包底包壳11处且竖向贯穿钢包包底包壳11，连接管4穿过定位孔7并与高温止回阀3连接。连接管至快速接头1之间的连接处均为可拆卸连接，第一旋接母口16与钢包透气上水口座砖10自带进气管9之间和第二旋接母口20和连接管4之间同样为可拆卸连接。优选的，可拆卸连接为螺纹连接。吹氩管路中各重要部位均使用螺纹连接，不仅保证了密封效果，同时也便于使用过程中对管路中各组件的维护保养。
第一旋接母口16和第一活节塞杆17分别与第二旋接母口20和第二活节塞杆19完全相同。活节塞杆整体呈T字形，包括杆头和杆身且内部开有供气体流通的通孔；如图3所示，旋接母口整体呈正六棱柱形且其一端开有供活节塞杆穿过的开孔，活节塞杆的杆身穿过旋接母口的开孔、杆头与旋接母口内腔尺寸匹配并卡在开孔内侧。活节塞杆的杆身伸出部分插入内接管18中，且杆身的外径与内接管18的内径相匹配，杆身与内接管18的连接处施以焊接进行密封加固，当旋接母口与钢包透气上水口座砖自带进气管9或连接管4螺纹连接时，钢包透气上水口座砖自带进气管或连接管4向内旋紧的同时，将活节塞杆的杆头与旋接母口的开孔处压紧，保证活节塞杆与旋接母口之间的良好密封。
外接管2、连接管4、内接管18和旋转连接管件6的材质为耐热不锈钢，其中，外接管、连接管的外径为21.34mm、壁厚为2mm，内接管外径为26.67mm、壁厚为2mm，旋接母口内螺纹规格型号为M30*2，活节塞杆的尺寸选择与旋接母口相配合。
连接管上固定有第一定位板5和第二定位板8，第一定位板5和第二定位板8均固定在连接管4和钢包之间，且第一定位板5和第二定位板8的间距等于连接管4水平段长度的2/3～3/4。优选的，第二定位板8固定在连接管4的弯折处，第一定位板5位于第二定位板8和高温止回阀3之间。利用两定位板将管路整体与所在钢包进行有效限位，防止使用过程中吹氩管路与钢包包底包壳11之间产生相对位移。第一定位板5和第二定位板8的材质均为Q235，厚度均为25mm，有效保障对管路的加固效果。
实施例2：
如实施例1所述的用于钢包透气上水口座砖的吹氩系统的安装方法，具体安装方法包括如下步骤：
S1.现场测量所需连接管4的长度并对其两端套丝，并将连接管4弯曲成L形，将连接管4水平方向的一端依次与高温止回阀3、外接管2和快速接头1连接，将连接管4的竖向部分通过钢包底端即钢包包底包壳11处开设的定位孔7插入钢包内部，在连接管4和钢包之间焊接固定第一定位板5和第二定位板8，使连接管4与钢包的位置相对固定，进行钢包永久衬13和钢包包底工作衬14施工；
S2.待钢包永久衬13、钢包包底工作衬14施工完毕后，吊装钢包透气上水口座砖10，将旋转连接管件6中的第一旋接母口16与进气管9连接、第二旋接母口20与连接管4的竖向端口连接；
S3.将快速接头1连通氩气气源，按照现有方法进行漏气检测，确认连通后的吹氩管路不漏气后，在钢包透气上水口座砖10的透气面黏贴防水贴15，防止浇注料中的泥浆通过透气面渗入透气孔中，影响钢包透气上水口座砖10的透气性能，进而影响吹氩冶金的效果；
S4.采用现有技术浇注钢包透气上水口座砖安装地坑12，按照现有技术将钢包养生、烘烤后即可上线使用。
其中步骤S3中使用的防水贴15呈圆环形，且其尺寸与钢包透气上水口座砖10的透气面尺寸相同，使用市售圆环形防水贴或使用防水不干胶标签纸裁剪而成。
实施例3：
如实施例1所述的用于钢包透气上水口座砖的吹氩系统的安装方法，本实施例为当按照实施例2中安装完成的钢包(即一次包)工作一段时间成为二次包时，吹氩系统的拆装方法，其具体包括如下步骤：
S1.一次包上线生产45～50炉后下线小修，采用拆包机拆除用后的渣线镁碳砖，采用风镐清理钢包透气上水口座砖安装地坑12部位浇注料；
S2.先卸下旋转连接管件6、后拆除用后的钢包透气上水口座砖10；
S3.在钢包透气上水口座砖安装地坑12内安装新的钢包透气上水口座砖10，将旋转连接管件6中的第一旋接母口16与钢包透气上水口座砖自带进气管9连接、第二旋接母口20与连接管4的竖向端口连接；
S4.将快速接头1连通氩气气源，按照现有方法进行漏气检测，确认连通后的吹氩管路不漏气后，在钢包透气上水口座砖10的透气面黏贴防水贴15，防水贴15与实施例2中使用的防水贴15相同；
S5.采用现有技术修补钢包包底工作衬14、浇注钢包透气上水口座砖安装地坑12，砌筑渣线镁碳砖，按照现有技术将钢包养生、烘烤后即可上线使用。
对比例1：
中国专利文献CN 109732074 A公开了一种钢包弥散环透气上水口座砖及其吹氩冶金方法，其中给出了一种吹氩管路的结构及连接方式。
对比例2：
中国专利文献CN 111774559 A公开了一种提高钢包底吹透气砖吹通率的装置及应用方法，其中同样给出了一种吹氩管路的结构及连接方式。
实验例：
将实施例1-3与对比例1、2所述的吹氩管路，在莱芜钢铁集团银山型钢有限公司炼钢厂2#130tLF精炼钢包透气上水口座砖上分别应用，并控制其他条件均相同(如钢包透气上水口、吹氩流量、吹氩时间、钢包包底工作衬及修砌工艺等)，应用情况对比见表1：
表1
Figure PCTCN2022083821-appb-000001
对比表1中数据，可看出本发明提供的吹氩管路连接方法简单，拆、装方便(安装用时短)，解决了对比例1(CN 109732074 A)、对比例2(CN 111774559 A)给出的吹氩进气管路由于焊接施工带来的拆、装困难的应用技术难题，大大缩短了吹氩进气管路安装时间；实现了吹氩进气管路的循环利用，解决了由于进气管路中“气体倒流”引发的钢包透气上水口座砖渗钢而导致无法完全复通的难题；实现了钢包透气上水口座砖10复通率100％，由此缩短了钢包透气上水口座砖烧氧清洗时间，提高了钢包透气上水口座砖10的平均寿命。
上述虽然结合附图对本发明的具体实施方式进行了描述，但并非对本发明保护范围的限制，所属领域技术人员应该明白，在本发明的技术方案的基础上，本领域技术人员不需要付出创造性劳动即可做出的各种修改或变形仍在本发明的保护范围以内。

Claims (10)

  1. 一种用于钢包透气上水口座砖的吹氩系统，包括钢包，所述钢包内设有钢包透气上水口座砖(10)，所述钢包透气上水口座砖(10)内设有进气管(9)，其特征在于：还包括依次连接的旋转连接管件(6)、连接管(4)、高温止回阀(3)、外接管(2)、快速接头(1)，所述连接管(4)至快速接头(1)之间的连接方式均为可拆卸连接；
    所述旋转连接管件(6)包括依次连接的第一旋接母口(16)、第一活节塞杆(17)、内接管(18)、第二活节塞杆(19)和第二旋接母口(20)，其中第一旋接母口(16)与进气管(9)连接、第二旋接母口(20)与连接管(4)连接，所述第一旋接母口(16)与进气管(9)之间、第二旋接母口(20)与连接管(4)之间均为可拆卸连接。
  2. 如权利要求1所述的用于钢包透气上水口座砖的吹氩系统，其特征在于：所述内接管(18)呈L形，所述第一活节塞杆(17)呈水平方向，所述第二活节塞杆(19)呈竖直方向；所述连接管(4)呈L形，所述高温止回阀(3)、外接管(2)、快速接头(1)均设置在钢包外部并沿水平方向布置，所述钢包上设有定位孔(7)，所述连接管(4)穿过定位孔(7)并与高温止回阀(3)连接。
  3. 如权利要求1所述的用于钢包透气上水口座砖的吹氩系统，其特征在于：所述连接管(4)至快速接头(1)之间的连接方式均为螺纹连接，所述第一旋接母口(16)与进气管(9)之间、第二旋接母口(20)与连接管(4)之间均为螺纹连接。
  4. 如权利要求1所述的用于钢包透气上水口座砖的吹氩系统，其特征在于：所述连接管上固定有第一定位板(5)和第二定位板(8)。
  5. 如权利要求4所述的用于钢包透气上水口座砖的吹氩系统，其特征在于：所述第一定位板(5)和第二定位板(8)均固定在连接管(4)和钢包之间，所述第一定位板(5)和第二定位板(8)的间距等于连接管(4)水平段长度的2/3～3/4。
  6. 如权利要求5所述的用于钢包透气上水口座砖的吹氩系统，其特征在于：所述第二定位板(8)固定在连接管(4)的弯折处，所述第一定位板(5)位于第二定位板(8)和高温止回阀(3)之间。
  7. 如权利要求4所述的用于钢包透气上水口座砖的吹氩系统，其特征在于：所述高温止回阀(3)选用PN25FBSP3/4型高温止回阀(3)；所述外接管(2)、连接管(4)、内接管(18)和旋转连接管件(6)的材质均为耐热不锈钢；所述第一定位板(5)和第二定位板(8)的材质均为Q235，厚度均为20mm-30mm。
  8. 如权利要求1～7所述的吹氩系统在一次包中的安装方法，其特征在于：
    其中一次包是指钢包包底工作衬(14)，包括渣线镁碳砖、包壁浇注料、包底浇注料均为 首次使用，
    具体安装步骤如下：
    S1.测量所需连接管的长度并对其两端套丝，将连接管(4)一端依次与高温止回阀(3)、外接管(2)和快速接头(1)连接，将连接管(4)的另一端插入钢包内部，进行钢包永久衬(13)和钢包包底工作衬(14)施工；
    S2.待钢包永久衬(13)、钢包包底工作衬(14)施工完毕后，吊装钢包透气上水口座砖(10)，将旋转连接管件(6)中的第一旋接母口(16)与进气管(9)连接、第二旋接母口(20)与连接管(4)插入钢包的一端连接；
    S3.将快速接头(1)连通氩气气源，进行漏气检测，确认连通后的吹氩系统不漏气后，在钢包透气上水口座砖(10)的透气面黏贴防水贴(15)，防止浇注料中的泥浆通过透气面渗入透气孔中，影响钢包透气上水口座砖(10)的透气性能，进而影响吹氩冶金的效果；
    S4.浇注钢包透气上水口座砖安装地坑(12)，将钢包养生、烘烤后即可上线使用。
  9. 如权利要求1～7所述的吹氩系统在二次包中的安装方法，其特征在于：
    其中二次包是指安装有吹氩系统的一次包上线生产45～50炉后下线小修，小修内容包括更换渣线镁碳砖、透气上水口座砖(10)、修补钢包包底工作衬(14)，
    具体安装步骤如下：
    S1.一次包上线生产45～50炉后下线小修，采用拆包机拆除用后的渣线镁碳砖，采用风镐清理钢包透气上水口座砖安装地坑(12)部位浇注料；
    S2.先卸下旋转连接管件(6)、后拆除用后的钢包透气上水口座砖(10)；
    S3.在钢包透气上水口座砖(10)安装地坑(12)内安装全新钢包透气上水口座砖(10)，将旋转连接管件(6)中的第一旋接母口(16)与进气管(9)连接、第二旋接母口(20)与连接管(4)插入钢包的一端连接；
    S4.将快速接头(1)连通氩气气源，进行漏气检测，确认连通后的吹氩系统不漏气后，在钢包透气上水口座砖(10)的透气面黏贴防水贴(15)；
    S5.浇注钢包透气上水口座砖安装地坑(12)、修补钢包包底工作衬(14)，砌筑渣线镁碳砖，将钢包养生、烘烤后即可上线使用。
  10. 如权利要求8或9所述的安装方法，其特征在于：所述防水贴(15)呈圆环形，且其尺寸与钢包透气上水口座砖(10)的透气面尺寸相同，使用市售圆环形防水贴(15)或使用防水不干胶标签纸裁剪而成。
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