WO2011110027A1 - 一种水冷水封型高炉无料钟炉顶传动箱 - Google Patents

一种水冷水封型高炉无料钟炉顶传动箱 Download PDF

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Publication number
WO2011110027A1
WO2011110027A1 PCT/CN2010/078393 CN2010078393W WO2011110027A1 WO 2011110027 A1 WO2011110027 A1 WO 2011110027A1 CN 2010078393 W CN2010078393 W CN 2010078393W WO 2011110027 A1 WO2011110027 A1 WO 2011110027A1
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Prior art keywords
water
blast furnace
transmission case
cooling
hole
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PCT/CN2010/078393
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English (en)
French (fr)
Inventor
严允进
陆明春
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北京科技大学
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Publication of WO2011110027A1 publication Critical patent/WO2011110027A1/zh

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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/18—Bell-and-hopper arrangements
    • C21B7/20—Bell-and-hopper arrangements with appliances for distributing the burden
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/10—Cooling; Devices therefor

Definitions

  • the utility model belongs to the field of iron making, and relates to a water-cooled water-sealed blast furnace bellless top gearbox.
  • the bell-less top gearbox placed on the blast furnace head is the heart of the blast furnace charging equipment. It not only has a clever mechanism to meet the technical requirements of reasonable fabrics, but also because the gearbox is at high temperature, high pressure and dust.
  • Working in the blast furnace gas environment cooling and sealing problems must be solved. It is this cooling and sealing problem that divides the development of the bookless furnace top into three stages: namely, air-cooled gas seal, water-cooled gas seal and water-cooled water seal. The first two phases are the patented technologies of Luxembourg.
  • the disadvantages of the air-cooled gas-sealed bell-less top are: First, it is required to equip 4 sets (two sets of work, two sets of spare parts) 160 ⁇ 500 kW of air-pressure presses and their auxiliary equipment and workshops. The investment is 200 ⁇ 500. Ten thousand yuan, more than the price of the bell-top gearbox at that time. Second, the two cold air presses are continuously operated. The annual production and operation cost is about 2.5 million yuan, which is equivalent to the price of the top gearbox. Third, a large amount of nitrogen is discharged into the furnace to reduce the calorific value of the blast furnace gas, causing huge waste of energy.
  • the water-cooled air-sealed type of top gearbox (see USPat.No. 4,526,536) has been widely used worldwide since its introduction in the last century by Luxembourg.
  • This water-cooled air-sealed transmission case has improved air-cooled air-sealing type, but it still has many disadvantages:
  • First, the cooling water uses demineralized water and closed-circuit circulation cooling, which adds many water-cooling facilities, such as circulation pumps and heat exchangers. , water supply facilities and monitoring equipment.
  • the second is to use a sliding mechanical seal between the upper and lower water tanks and the casing, which inevitably wears and creates a gap, so that the dusty blast furnace gas enters the transmission box and causes pollution. In order to reduce pollution, the gas seal must be retained.
  • the above gaps cause the softened water of the closed circuit to pollute and evaporate, requiring renewal and hydration, while making the upper and lower sinks It is difficult to maintain a stable water level inside, and equipment for detecting and monitoring the water level must be available. Once the detection and monitoring equipment fails, it can be a potential hazard if the cooling water overflows into the furnace or the tank is drained.
  • the water-cooled serpentine tube is attached to the rotating screen, and its cooling area is small, and the cooling intensity is limited. As the temperature of the top gas rises, the temperature inside the gearbox also increases. In this case, in order to ensure the normal operating temperature of the parts inside the box (less than 50 ° C), in addition to water cooling, air cooling is required. Therefore, the water-cooled gas-sealed bell-less top not only cannot get rid of air-cooling, but also adds many water recycling facilities, and its total investment and production maintenance costs are not significantly reduced.
  • the water-cooled water-sealed type of topless roof was invented by China in the late 1980s (see China Pat. No. 88101584.9) and was successfully used on several blast furnaces.
  • the purpose of the utility model is to improve and perfect two kinds of transmission boxes of different structures on the basis of the original water-cooled water sealing principle, completely eliminating air cooling, and the cooling water adopts common industrial water, thereby reducing the processing cost.
  • the utility model relates to a water-cooled water-sealed blast furnace bellless top gearbox, which comprises a planetary gear transmission and a drive mechanism driven by a cylinder lifting mechanism.
  • the utility model is characterized in that: a planetary gear box or a driving mechanism and a driving pinion are arranged in the transmission box.
  • the cooling water is made of industrial water, and enters the upper ring cavity tangentially. After entering the upper tank through the spray hole, it flows into the water-filled interlayer through the drainage hole on the side wall, flows to the lower tank, and then is discharged by the U-shaped water-sealed drain pipe. .
  • the upper sink as described above is fixed with the large gear and the rotating screen, and can be rotated together Turn, so the upper sink is a moving sink.
  • the water spray interlayer as described above is composed of a rotating screen and a water deflector and a water deflector.
  • the movable housing or the static housing on one side of the transmission box furnace is provided with a heat insulating layer.
  • the planetary gear transmission power is driven by the planetary gear box to drive the active pinion 1 and the active pinion 2.
  • the large gear and the double large gear are respectively driven.
  • the large gear is fixed with the rotating screen and can be rotated around the center line of the blast furnace to achieve a circumferential fabric.
  • the double large gear drives two worm gear boxes, and the output shaft of the worm gear box (ie, the chute connecting shaft) extends into the furnace and is connected with the chute pylon, which can adjust the inclination of the chute, thereby realizing various types of fabric.
  • the driving force of the cylinder lifting mechanism is driven by the driving mechanism to drive the small pinion gear, which drives the large gear wheel and the rotating screen to realize the rotating cloth of the chute.
  • the adjustment of the chute inclination is achieved by the cylinder lift mechanism.
  • the water-cooled water-sealed bell-less top overcomes the shortcomings of the air-cooled gas seal and the water-cooled gas seal type.
  • the advantages are: - the air cooling is completely eliminated, and the cooling water is made of ordinary industrial water, and there is no special requirement for water quality.
  • the cooling water can not only form a water seal when flowing through the upper and lower water tanks, but also allows the throat gas to freely enter and exit the gearbox, so that the gearbox can be freely inserted into the gearbox.
  • the air pressure is always in dynamic equilibrium with the throat pressure. Therefore, this is an isobaric water seal, and the water levels on both sides of the upper and lower tanks are always equal.
  • the height of the water surface in the upper and lower sinks is determined by the height of the drain. Regardless of the flow rate of the cooling water, the water tank will not be drained, nor will it overflow the water into the furnace, always acting as a water seal. Fourth, due to the use of two annular isobaric water seals in the transmission case, the rotating cloth mechanism, that is, the rotating screen, has a large gap with other components that are stationary, and does not require a contact mechanical seal. Thereby reducing the processing cost.
  • the moving shell or the static shell on one side of the transmission box furnace is provided with a heat insulating layer.
  • the cooling water passes through the annular water chamber from top to bottom, the upper and lower water tanks, and the screen shower layer, which can effectively maintain the cold and clean gas environment inside the box and ensure the long-term safe operation of the cloth mechanism.
  • the transmission box uses a U-shaped water seal of 30 to 60 meters high to drain the water, and the cooling water can be continuously discharged, and at the same time, the furnace gas can be prevented from leaking through the drainage pipe. Ensure that the blast furnace can operate at any pressure.
  • the reference numerals in the figure are: planetary gearbox 1, active pinion 2, active pinion 2, upper sink drain 4, lower drain 5, outlet 6, U-shaped drain 7, drain valve 8, insulation layer 9 , upper water tank 10, double large gear 11 , large gear 12 , spray hole 13 , annular cavity 14 , inlet 15 , spacer 16 , puff hole 17 , water deflector 18 , water deflector 19 , gasping Hole 2, burner head sealing plate 21, chute connecting shaft 22, annular gap 23, annular gap 2, rotating screen 25, spacer 22, steam shut-off valve 27, nitrogen shut-off valve 28, cylinder lifting mechanism 29, drive Mechanism 30, housing 31.
  • the power of Fig. 1 is driven by the planetary gear box 1 to drive the pinion 2, and the driving pinion 2 3 drives the large gear 12 and the double large gear 11 respectively.
  • the large gear 12 is fixed with the rotating screen 25 and can be rotated around the center line of the blast furnace to realize a circumferential cloth.
  • the double large gear 11 drives two worm gear boxes (not shown in this figure), and the worm gear box output shaft 22 extends into the furnace and is connected with the chute pylon to adjust the inclination of the chute, thereby realizing various types of fabric.
  • the power of Fig. 2 is driven by the drive mechanism 30 to drive the pinion 2, which drives the large gear 12 and the rotating screen 25 to realize the rotating cloth of the chute.
  • the adjustment of the chute inclination is achieved by the cylinder lifting mechanism 29.
  • the cooling water having a pressure higher than the throat gas pressure of 0.1 MPa is tangentially entered into the annular chamber 14 from the inlet 15, passes through the plurality of water holes 13 and enters the upper water tank 10, and then enters the screen through the upper water outlet 4
  • the shower water ring of the interlayer is then diffused to the lower water tank 5 and finally discharged from the outlet 6 through the U-shaped drain pipe 7.
  • the upper water tank 10 and the lower water tank 5 are provided with a spacer ring 16 and a spacer ring 26, and the spacer ring has a plurality of puff holes, a puff hole 17 and a puff hole 20, and the throat gas can pass through the annular gap 23, ring
  • the gap 2 is free to enter and exit the transmission box, so that the air pressure in the box is always dynamically balanced with the air pressure of the throat. This is an automatically formed "equal pressure gas seal", plus an annular gap 23, a labyrinth seal at the entrance of the annular gap 2, which prevents large particles of dust from entering the gearbox.
  • the puff hole 17 and the puff hole 20 are provided with a water-spraying facility to allow the blast furnace gas to pass through water cooling and water dust removal, and then remain in the tank for a long period of time, so that a cold and clean atmosphere is formed in the tank.
  • the water in the water tank can be stirred when the screen is rotated, so that the sand in the cooling water floats and discharges together with the water flow.
  • the environment inside the gearbox is very clean and there is no sediment in the water tank.
  • the sewage valve 8 of the two U-shaped drains 7 is opened periodically, and the two U-shaped drain pipes are ensured, the water-cooled water seal system can work normally.
  • the cooling water supply is interrupted, and the upper and lower water tanks are neither water nor drained. At this time, water and water seals will still exist in the upper and lower water tanks.
  • the temperature alarm does not alarm, the temperature inside the box does not exceed 50 °C, and the transmission box can still work. If the temperature inside the box exceeds 50 °C and the alarm sounds an accident, the operation must be stopped to find out the cause and handle it in time.
  • a steam shut-off valve 27 is provided on the upper part of the transmission case, which is a normally closed valve. Only when the blast furnace is off, if you need to open the working hole cover of the gearbox, open the steam valve for a few minutes to drive out the gas in the tank to prevent gas poisoning. In addition, if the gearbox has been put into operation for several years, in order to update the grease, an artificial temporary water stop can be made, and the steam shut-off valve is opened to pass steam, so that the old grease in the bearing is melted and discharged, and then the steam shut-off valve is closed and connected. Cool the water and re-introducing new grease.
  • the nitrogen shut-off valve 28 is also a normally closed valve. It can be opened at the beginning of the blast furnace opening The moving box is first filled with clean nitrogen and then turned off after a certain period of operation. This is a new valve. In fact, its role is not big. Because the blast furnace was opened before the furnace, there was a natural atmosphere in the box. This new nitrogen shut-off valve only serves as a soothing effect, and it is considered safer to have it.

Description

一种水冷水封型高炉无料钟炉顶传动箱
技术领域
本实用新型属于炼铁领域， 涉及一种水冷水封型高炉无料钟炉顶 传动箱。
背景技术 说
置于高炉炉头上的无料钟炉顶传动箱是高炉装料设备的心脏， 它 不仅要有巧妙的机构来满足合理布料的工艺要求， 同时由于传动箱处 在高温、 高压、 多灰尘的高炉煤气的环境中工作， 必须解决好冷却和 密封问题。 正是这冷却和密封问题， 使无书料钟炉顶的发展分为三个阶 段： 即气冷气封、 水冷气封和水冷水封三个阶段。 前两个阶段都是卢 森堡的专利技术。
气冷气封型无料钟炉顶的缺点是： 一是需要配备 4台 （两台工作、 两台备用） 160〜500千瓦的冷气加压机及其附属设备和厂房，其投资为 200〜500万元，超过当时无料钟炉顶传动箱的价格。二是两台冷气加压 机不断地运转， 每年生产运转费约 250万元， 相当于炉顶传动箱的价 格。 三是大量氮气排入炉内， 降低高炉煤气的发热值， 使能源造成巨 大浪费。
水冷气封型无料种炉顶传动箱 （见 U.S.Pat.No.4，526，536) 自上世 纪中由卢森堡提出后， 至今仍广泛用于世界各地。 这种水冷气封型传 动箱比气冷气封型有了改进， 但仍有许多缺点： 一是冷却水采用软化 水， 并采用闭路循环冷却， 增加了许多水冷设施， 如循环泵、 热交换 器、 补水设施和监控设备等。 二是其上、 下水槽与壳体之间采用滑动 式机械密封， 不可避免的要磨损产生间隙， 使带有尘埃的高炉煤气进 入传动箱造成污染。 为了减少污染， 必须保留气封。 三是上述间隙使 闭路循环的软化水污染和蒸发， 需要更新和补水， 同时使上、 下水槽 内的水面高度保持稳定产生困难， 必须要有探测和监控水面高度的设 备。 一旦探测和监控设备失灵， 会使冷却水溢入炉内或水槽排空， 具 有潜在危险。 四是水冷蛇形管附在旋转屏风上， 其冷却面积小， 冷却 强度受限。 当炉顶煤气温度升高时， 传动箱内温度也随着升高。 在这 种情况下为了确保箱内零件的正常工作温度（低于 50°C )， 除了水冷之 外， 还需要气冷。 因此水冷气封型无料钟炉顶不但不能摆脱气冷， 并 且增加了许多水循环设施， 其总投资和生产维持费并没有显著降低。
水冷水封型无料种炉顶由我国在上世纪 80年代后期发明（见 China Pat. No.88101584.9), 并在多座高炉上使用获得成功。
实用新型内容
本实用新型目的是在原有水冷水封原理基础上， 改进和完善两种 不同结构的传动箱， 完全取消气冷， 冷却水采用普通工业用水， 降低 了加工成本。
一种水冷水封型高炉无料钟炉顶传动箱， 包括行星齿轮传动和由 油缸升降机构传动两种结构， 其特征在于： 传动箱内设有行星齿轮箱 或驱动机构、 主动小齿轮一、 主动小齿轮二、 上水槽排水口、 下水槽、 出口、 U形排水管、 排污阀、 绝热层、 上水槽、 双联大齿轮或油缸升 降机构、 大齿轮、 喷淋孔、 环腔、 入口、 隔环一、 喘气孔一、 档水板 一、 档水板二、 喘气孔二、 炉头封板、 溜槽连接轴、 环形缝隙一、 环 形缝隙二、 旋转屏风、 隔环二； 上水槽与布料溜槽一起旋转， 下水槽 5 与炉喉钢圈一体； 两个水槽内设有隔环一、 隔环二， 隔环上设有喘气 孔一、 喘气孔二， 能使炉喉煤气经环形缝隙一、 环形缝隙二自由进出 传动箱， 使箱内气压与炉喉气压始终保持动态平衡。
冷却水采用工业用水， 由切向进入上部环腔， 经喷淋孔进入上水 槽后， 经侧壁上的排水孔流入淋水夹层， 漫流至下水槽， 然后由 U形 水封式排水管排出。
如上所述的上水槽与大齿轮及旋转屏风固定在一起， 可以一起旋 转， 因此上水槽是动水槽。
如上所述的淋水夹层由旋转屏风和档水板一和档水板二构成。 传 动箱炉内一侧的动壳体或静壳体皆设有绝热层。
行星齿轮传动动力由行星齿轮箱带动主动小齿轮一和主动小齿轮 二， 分别带动大齿轮和双联大齿轮。 大齿轮与旋转屏风固结在一起， 可以绕高炉中心线旋转， 实现圆周布料。 双联大齿轮带动两个蜗轮箱， 蜗轮箱输出轴 （即溜槽连接轴） 伸入炉内与溜槽挂架相联， 可以调整 溜槽的倾角， 从而实现多种型式的布料。
油缸升降机构传动动力由驱动机构传动主动小齿轮一， 带动大齿 轮和旋转屏风， 实现溜槽的旋转布料。 溜槽倾角的调整由油缸升降机 构来实现。
水冷水封型无料钟炉顶克服了气冷气封和水冷气封型的缺点， 其 优点是- 一是完全取消气冷， 冷却水采用普通工业用水， 对水质没有特殊 要求。
二是上、 下水槽内设有隔环， 由于隔环上有喘气孔， 冷却水流经 上、 下水槽时不但可以形成水封， 并且可以使炉喉煤气自由出入传动 箱， 使传动箱内的气压始终与炉喉气压保持动态平衡。 因此， 这是一 种等压水封， 上、 下水槽内隔环两侧的水面高度始终相等。
三是上、 下水槽内的水面高度由排水口的高度决定。 不论冷却水 的流量多少， 水槽既不会排空， 也不会将水溢入炉内， 始终起水封作 用。 四是由于传动箱内采用了两道环形等压水封， 转动的布料机构， 即旋转屏风， 与静止的其它构件之间具有较大的间隙， 不需要接触式 机械密封。 从而降低了加工成本。
五是传动箱炉内一侧的动壳体或静壳体皆设有绝热层。 传入箱内 的热量很少。 加上冷却水自上而下经过环形水腔， 上、 下水槽， 及屏 风淋水夹层， 可以有效地维持箱内冷态净煤气的环境， 保证布料机构 长期安全的运行。
六是传动箱采用 30〜60米高的 U形管水封排水， 冷却水可以不断 地排出， 同时又可以防止炉气经排水管泄漏。 保证高炉可以在任何压 力下操作运行。
附图说明
图 1. 行星传动调溜槽倾角的水冷水封传动箱。
图 2. 油缸升降机构调溜槽倾角的水冷水封传动箱。
图中附图标记为： 行星齿轮箱 1、 主动小齿轮一 2、 主动小齿轮二 3、 上水槽排水口 4、 下水槽 5、 出口 6、 U形排水管 7、 排污阀 8、 绝 热层 9、 上水槽 10、 双联大齿轮 11、 大齿轮 12、 喷淋孔 13、 环腔 14、 入口 15、 隔环一 16、 喘气孔一 17、 档水板一 18、 档水板二 19、 喘气 孔二 20、 炉头封板 21、 溜槽连接轴 22、 环形缝隙一 23、 环形缝隙二 24、 旋转屏风 25、 隔环二 26、 蒸汽截止阀 27、 氮气截止阀 28、 油缸 升降机构 29、 驱动机构 30、 壳体 31。
图 1的动力由行星齿轮箱 1带动主动小齿轮一 2、主动小齿轮二 3， 分别带动大齿轮 12和双联大齿轮 11。大齿轮 12与旋转屏风 25固结在 一起， 可以绕高炉中心线旋转， 实现圆周布料。 双联大齿轮 11带动两 个蜗轮箱（本图未画出）， 蜗轮箱输出轴 22伸入炉内与溜槽挂架相联， 可以调整溜槽的倾角， 从而实现多种型式的布料。
图 2的动力由驱动机构 30传动主动小齿轮 2，带动大齿轮 12和旋 转屏风 25， 实现溜槽的旋转布料。 溜槽倾角的调整由油缸升降机构 29 来实现。
具体实施方式
比炉喉煤气压力高 O.lMPa的冷却水由入口 15切向进入环腔 14， 经过众多的水孔 13进入上水槽 10， 再由上水槽排水口 4进入屏风 25 夹层的淋水环腔，然后漫流至下水槽 5，最后由出口 6经 U形排水管 7 排出。
上水槽 10和下水槽 5内设有隔环一 16、 隔环二 26， 隔环上有众 多的喘气孔， 喘气孔一 17和喘气孔二 20， 炉喉煤气可以经环形缝隙一 23、 环形缝隙二 24自由进出传动箱， 使箱内气压始终与炉喉气压自动 保持动态平衡。这是一种自动形成的"等压气封"， 加上环形缝隙一 23、 环形缝隙二 24入口处设有迷宫式密封， 可以防止炉喉脏煤气内大颗粒 的尘埃带入传动箱。 此外， 喘气孔一 17和喘气孔二 20设有淋水设施， 使高炉煤气进入时经过水冷却和水除尘， 然后长期保留在箱内， 使箱 内形成冷态净气的环境。
由于隔环一 16、隔环二 26下端部设有缺口和刮板， 屏风转动时可 以搅动水槽内的水， 使冷却水中的沙粒漂浮随水流一起排出。 经多座 高炉生产实践证明， 传动箱内的环境很干净， 水槽内也没有沉积物。 只要定期打开一次两个 U形排水管 7的排污阀 8， 保证两个 U形排水 管通畅， 就可以使水冷水封系统正常工作。
如遇特殊情况， 发生冷却水供应中断， 上、 下水槽暂时既不进水 也不排水， 这时上、 下水槽内仍会存有水起水封作用。 只要测温警报 器未报警， 说明箱内温度没有超过 50°C， 传动箱仍可运转工作。 如果 箱内温度超过 50°C， 警报器发出事故报警， 则必须停止运行， 査明原 因， 及时处理。
传动箱壳体上部设有蒸汽截止阀 27， 它是一个常闭阀门。 只有高 炉休风时， 如果需要打开传动箱的工作孔盖前， 才打开该蒸气阀门数 分钟， 用来驱赶箱内的煤气， 以防煤气中毒。 另外， 如果传动箱已投 产运行数年， 为了更新润滑油脂， 可以人为的临时停水， 并打开蒸气 截止阀通入蒸汽， 使轴承内的旧油脂融化后排出， 然后关闭蒸汽截止 阀， 接通冷却水， 重新通入新的润滑脂。
氮气截止阀 28也是一个常闭阀门。 它可以在高炉开炉初期打开， 使传 动箱先充满干净的氮气， 运行一定时间后再关闭。 这是一个新设的阀 门。 其实它的作用不大。 因为高炉开炉前， 箱内本来就存在自然界的 大气。 这个新设的氮气截止阀只起一种安抚作用， 认为有了它比较放 心。

Claims

权 利 要 求 书
1. 一种水冷水封型高炉无料钟炉顶传动箱， 包括行星齿轮传动 和由油缸升降机构传动两种结构， 其特征在于： 传动箱设有行星齿轮 箱 （1 ) 或驱动机构 （30)、 主动小齿轮一 （2)、 主动小齿轮二 （3 )、 上水槽排水口 （4)、 下水槽（5)、 出口 （6)、 U形排水管 （7)、 排污 阀 （8)、 绝热层 （9)、 上水槽 （10)、 双联大齿轮 （11 ) 或油缸升降 机构 （29)、 大齿轮 （12)、 喷淋孔 （13 )、 环腔 （14)、 入口 （15 )、 隔环一（16)、 喘气孔一（17)、 档水板一（18)、 档水板二（19)、 喘 气孔二（20)、炉头封板（21 )、溜槽连接轴（22)、环形缝隙一（23 )、 环形缝隙二 （24)、 旋转屏风 （25 )、 隔环二 （26); 上水槽 （10) 与 布料溜槽一起旋转， 下水槽 （5) 与炉喉钢圈一体； 两个水槽内设有 隔环一（16)、隔环二（26)，隔环上设有喘气孔一（17)、喘气孔（20)， 能使炉喉煤气经环形缝隙一 （23 )、 环形缝隙二 （24) 自由进出传动 箱， 使箱内气压与炉喉气压始终保持动态平衡。
2. 如权利要求 1所述一种水冷水封型高炉无料钟炉顶传动箱， 其特征在于冷却水采用工业用水， 由切向进入上部环腔 （14)， 经喷 淋孔 （13 ) 进入上水槽 （10) 后， 经侧壁上的上水槽排水孔 （4) 流 入淋水夹层， 漫流至下水槽 （5 )， 然后由出口 （6) 经 U形水封式排 水管 (7) 排出。
3. 如权利要求 2所述一种水冷水封型高炉无料钟炉顶传动箱， 其特征在于所述的上水槽（10)与大齿轮（12)及旋转屏风（25) 固 定在一起， 能够一起旋转。
4. 如权利要求 2所述一种水冷水封型高炉无料钟炉顶传动箱， 其特征在于所述的淋水夹层由旋转屏风 （25) 和档水板一 （18)、 档 水板二（19)构成； 传动箱炉内一侧的动壳体或静壳体皆设有绝热层
PCT/CN2010/078393 2010-03-10 2010-11-04 一种水冷水封型高炉无料钟炉顶传动箱 WO2011110027A1 (zh)

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