CN203333703U - Hot lock type cast iron furnace mouth - Google Patents
Hot lock type cast iron furnace mouth Download PDFInfo
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- CN203333703U CN203333703U CN2013203392937U CN201320339293U CN203333703U CN 203333703 U CN203333703 U CN 203333703U CN 2013203392937 U CN2013203392937 U CN 2013203392937U CN 201320339293 U CN201320339293 U CN 201320339293U CN 203333703 U CN203333703 U CN 203333703U
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- cast iron
- furnace mouth
- iron furnace
- wedge
- shaped dovetail
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- 229910001018 Cast iron Inorganic materials 0.000 title claims abstract description 45
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
本实用新型提供一种热锁式铸铁炉口，由4-6块分体铸铁炉口拼接组成，每块分体铸铁炉口一端设有一楔形燕尾台，另一端对应位置上开有一楔形燕尾槽，各分体铸铁炉口的楔形燕尾台镶嵌在相邻分体铸铁炉口的楔形燕尾槽内。相邻两块分体铸铁炉口接缝预留间隙大于楔形燕尾台与楔形燕尾槽之间的装配间隙。使各块分体铸铁炉口形成联横状态，当其受热向外扩张时，分体间受连接部位的牵制作用，可阻止分体铸铁炉口的进一步变形，保证炉口只能在有限的范围内变形，避免分体铸铁炉口形成永久变形。从而延长炉口使用寿命，提高转炉可开动率。
The utility model provides a heat-locking cast iron furnace mouth, which is composed of 4-6 split cast iron furnace mouths spliced together. One end of each split cast iron furnace mouth is provided with a wedge-shaped dovetail platform, and a wedge-shaped dovetail groove is opened at the corresponding position on the other end. , the wedge-shaped dovetail platform of each split cast iron furnace mouth is embedded in the wedge-shaped dovetail groove of the adjacent split cast iron furnace mouth. The gap reserved for the joints of two adjacent split cast iron furnace mouths is greater than the assembly gap between the wedge-shaped dovetail platform and the wedge-shaped dovetail groove. Make each split cast iron furnace mouth form a horizontal state. When it is heated and expands outwards, the split parts are restrained by the connecting part, which can prevent further deformation of the split cast iron furnace mouth and ensure that the furnace mouth can only be opened in a limited area. Deformation within a certain range to avoid permanent deformation of the split cast iron furnace mouth. Thereby prolonging the service life of the furnace mouth and improving the start-up rate of the converter.
Description
技术领域 technical field
本实用新型属于炼钢设备领域，具体涉及一种转炉炉体上端炉帽所用的可防止变形的热锁式铸铁炉口。 The utility model belongs to the field of steelmaking equipment, in particular to a heat-locking cast iron furnace mouth which can prevent deformation and is used for a furnace cap at the upper end of a converter furnace body.
背景技术 Background technique
转炉炉体一般由炉帽、炉壳（炉身）及炉底三部分组成。为延长炉帽金属壳和炉衬的使用寿命，一般在炉帽上部设有圆形炉口，以方便加料和倒渣等作业。为了保护炉口，均采用强制循环水冷炉口或铸铁炉口。强制循环水冷炉口虽然耐热性好，但受拆炉机拆扒炉口、废钢加入时废钢对炉口的冲击影响，很容易造成环管漏水，不仅严重影响炉口衬砖寿命，而且易发生爆炸事故。另外，还存在着维修困难和维修效果差等缺陷。 The converter body is generally composed of three parts: the furnace cap, the furnace shell (body) and the furnace bottom. In order to prolong the service life of the metal shell and lining of the furnace cap, a circular furnace opening is generally provided on the upper part of the furnace cap to facilitate operations such as feeding and slag dumping. In order to protect the furnace mouth, forced circulation water-cooled furnace mouth or cast iron furnace mouth is used. Although the forced circulation water-cooled furnace mouth has good heat resistance, it is easy to cause water leakage in the ring pipe due to the impact of scrap steel on the furnace mouth when the furnace dismantling machine removes the griddle mouth and scrap steel is added, which not only seriously affects the life of the furnace mouth lining bricks, but also easily There was an explosion. In addition, there are also defects such as difficult maintenance and poor maintenance effect.
随着铸造工艺的进步，近年来普遍采用铸铁炉口。该炉口无水冷结构，耐烧、耐侵蚀性好。铸铁炉口均采用分体式结构，即将4-6块弧形的分体铸铁炉口拼装在炉口法兰上，形成一个完整的圆形炉口，每块分体铸铁炉口通过螺栓连接在炉口法兰上。但长期使用过程中发现，由于采用分体式结构，炉口法兰相当于“悬臂式”安装，只有外弧边缘位置紧固，而内弧则受热变形造成“张嘴”现象，不仅直接影响炉口的使用寿命，而且影响了转炉的开动率。 With the advancement of casting technology, cast iron furnace mouths have been widely used in recent years. The furnace mouth has no water-cooling structure, and has good fire resistance and corrosion resistance. The cast iron furnace mouth adopts a split structure, that is, 4-6 arc-shaped split cast iron furnace mouths are assembled on the furnace mouth flange to form a complete circular furnace mouth, and each piece of split cast iron furnace mouth is connected by bolts. on the furnace flange. However, during the long-term use, it was found that due to the split structure, the flange of the furnace mouth is equivalent to a "cantilever" installation, only the edge of the outer arc is fastened, while the inner arc is deformed by heat, causing the "mouth opening" phenomenon, which not only directly affects the furnace mouth The service life of the converter has also affected the operating rate of the converter.
发明内容 Contents of the invention
本实用新型旨在提供一种可防止炉口变形，延长炉口使用寿命，提高转炉可开动率的热锁式铸铁炉口。 The utility model aims to provide a heat-locking cast iron furnace mouth which can prevent the deformation of the furnace mouth, prolong the service life of the furnace mouth and improve the operating rate of the converter.
为此，本实用新型所采取的解决方案是： For this reason, the solution that the utility model takes is:
一种热锁式铸铁炉口，由4-6块分体铸铁炉口拼接组成，每块分体铸铁炉口一端设有一楔形燕尾台，另一端对应位置上开有一楔形燕尾槽，各分体铸铁炉口的楔形燕尾台镶嵌在相邻分体铸铁炉口的楔形燕尾槽内。 A heat-locking cast iron furnace mouth, which is composed of 4-6 split cast iron furnace mouths. Each split cast iron furnace mouth is equipped with a wedge-shaped dovetail platform at one end and a wedge-shaped dovetail groove at the corresponding position on the other end. The wedge-shaped dovetail platform of the cast iron furnace mouth is embedded in the wedge-shaped dovetail groove of the adjacent split cast iron furnace mouth.
相邻两块分体铸铁炉口之间接缝的预留间隙大于楔形燕尾台与楔形燕尾槽之间的装配间隙。 The reserved gap between the joints between two adjacent split cast iron furnace mouths is greater than the assembly gap between the wedge-shaped dovetail platform and the wedge-shaped dovetail groove.
本实用新型的有益效果为： The beneficial effects of the utility model are:
由于采用燕尾台与楔形燕尾槽镶嵌连接结构，且接缝间隙大于楔形燕尾台与楔形燕尾槽之间的装配间隙，从而使各块分体铸铁炉口形成联横状态，当其受热向外扩张时，分体间受连接部位的牵制作用，各燕尾台与燕尾槽之间的缝隙消耗掉后，即可阻止分体铸铁炉口的进一步变形，保证炉口只能在有限的范围内变形。而一旦温度下降，应力减少时，各分体铸铁炉口即可恢复状态，从而避免由于分体铸铁炉口“张嘴”过大形成永久变形。因此，本实用新型可有效防止炉口的过渡变形，延长炉口使用寿命，提高转炉可开动率。 Due to the inlaid connection structure of the dovetail table and the wedge-shaped dovetail groove, and the joint gap is larger than the assembly gap between the wedge-shaped dovetail table and the wedge-shaped dovetail groove, each piece of split cast iron furnace mouth forms a horizontal state, and when it is heated, it expands outward. When the splits are restrained by the connecting parts, after the gap between each dovetail table and dovetail groove is consumed, the further deformation of the split cast iron furnace mouth can be prevented, and the furnace mouth can only be deformed within a limited range. Once the temperature drops and the stress decreases, each split cast iron furnace mouth can recover to its state, thereby avoiding permanent deformation due to the excessive "mouth opening" of the split cast iron furnace mouth. Therefore, the utility model can effectively prevent the transitional deformation of the furnace mouth, prolong the service life of the furnace mouth, and improve the start-up rate of the converter.
附图说明 Description of drawings
图1是热锁式铸铁炉口结构示意图。 Fig. 1 is a structural schematic diagram of a heat-locked cast iron furnace mouth.
图2是图1的I部放大图。 Fig. 2 is an enlarged view of part I of Fig. 1 .
图中：分体铸铁炉口1、燕尾台与燕尾槽镶嵌连接处2、接缝3。 In the figure: split cast iron furnace mouth 1, dovetail table and dovetail groove mosaic connection 2, seam 3.
具体实施方式 Detailed ways
由附图可见，本实用新型热锁式铸铁炉口系由4块弧形分体铸铁炉口1拼接而成，每块分体铸铁炉口1的一端均设有一个楔形燕尾台，而另一端对应位置上则开有一楔形燕尾槽，各分体铸铁炉口1的楔形燕尾台镶嵌在相邻分体铸铁炉口1的楔形燕尾槽内，形成相互卡装的燕尾台与燕尾槽镶嵌连接处2，4块分体铸铁炉口1的外弧均通过螺栓固定在炉口法兰上。拼装完成后构成一个完整的圆环形铸铁炉口。为防止分体铸铁炉口1变形后“张嘴”，故相邻两块分体铸铁炉口1之间接缝3的间隙大于燕尾台与燕尾槽之间的装配间隙。 It can be seen from the accompanying drawings that the heat-locking cast iron furnace mouth of the utility model is spliced by 4 arc-shaped split cast iron furnace mouths 1, one end of each split cast iron furnace mouth 1 is provided with a wedge-shaped dovetail platform, and the other There is a wedge-shaped dovetail groove at the corresponding position at one end, and the wedge-shaped dovetail platform of each split cast iron furnace mouth 1 is embedded in the wedge-shaped dovetail groove of the adjacent split cast iron furnace mouth 1, forming a mutual clamping dovetail platform and dovetail groove inlaid connection The outer arcs of the 2 and 4 split cast iron furnace mouths 1 are all fixed on the furnace mouth flange by bolts. After the assembly is completed, a complete circular cast iron furnace mouth is formed. In order to prevent the split cast iron furnace port 1 from deforming, the gap between the seams 3 between two adjacent split cast iron furnace ports 1 is larger than the assembly gap between the dovetail platform and the dovetail groove.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203392937U CN203333703U (en) | 2013-06-12 | 2013-06-12 | Hot lock type cast iron furnace mouth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203392937U CN203333703U (en) | 2013-06-12 | 2013-06-12 | Hot lock type cast iron furnace mouth |
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| Publication Number | Publication Date |
|---|---|
| CN203333703U true CN203333703U (en) | 2013-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013203392937U Expired - Fee Related CN203333703U (en) | 2013-06-12 | 2013-06-12 | Hot lock type cast iron furnace mouth |
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| CN (1) | CN203333703U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111043857A (en) * | 2019-12-31 | 2020-04-21 | 株洲瑞德尔冶金设备制造有限公司 | A sintering furnace insulation cylinder clamping device |
| CN117126979A (en) * | 2023-07-13 | 2023-11-28 | 宝武集团鄂城钢铁有限公司 | A furnace mouth structure of a converter heat-resistant furnace cap and its installation and disassembly method |
-
2013
- 2013-06-12 CN CN2013203392937U patent/CN203333703U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111043857A (en) * | 2019-12-31 | 2020-04-21 | 株洲瑞德尔冶金设备制造有限公司 | A sintering furnace insulation cylinder clamping device |
| CN117126979A (en) * | 2023-07-13 | 2023-11-28 | 宝武集团鄂城钢铁有限公司 | A furnace mouth structure of a converter heat-resistant furnace cap and its installation and disassembly method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131211 Termination date: 20190612 |