CN204612480U - A kind of heating-furnace top outlet sealing structure - Google Patents
A kind of heating-furnace top outlet sealing structure Download PDFInfo
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- CN204612480U CN204612480U CN201520169072.9U CN201520169072U CN204612480U CN 204612480 U CN204612480 U CN 204612480U CN 201520169072 U CN201520169072 U CN 201520169072U CN 204612480 U CN204612480 U CN 204612480U
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- 238000007789 sealing Methods 0.000 title claims abstract description 33
- 239000000835 fiber Substances 0.000 claims abstract description 69
- 239000000919 ceramic Substances 0.000 claims abstract description 67
- 239000004744 fabric Substances 0.000 claims abstract description 36
- 239000002131 composite material Substances 0.000 claims abstract description 19
- 238000010438 heat treatment Methods 0.000 claims abstract description 19
- 229920000742 Cotton Polymers 0.000 claims abstract description 16
- 230000005855 radiation Effects 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 11
- 239000010935 stainless steel Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 229910000990 Ni alloy Inorganic materials 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims 2
- 239000001301 oxygen Substances 0.000 claims 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims 1
- 229910052710 silicon Inorganic materials 0.000 claims 1
- 239000010703 silicon Substances 0.000 claims 1
- 238000009413 insulation Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 14
- 239000010959 steel Substances 0.000 description 14
- 238000006073 displacement reaction Methods 0.000 description 13
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 7
- 239000003546 flue gas Substances 0.000 description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 239000000377 silicon dioxide Substances 0.000 description 4
- 239000003365 glass fiber Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical class C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006356 dehydrogenation reaction Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002470 thermal conductor Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
本实用新型涉及一种加热炉炉顶出口密封结构，该密封结构包括陶瓷纤维拐角模块(1)、陶瓷纤维拐角模块上的支撑板(2)、铺设在支撑板上的盖板(3)、固定在盖板上的陶瓷纤维毯(4)、填塞在陶瓷纤维拐角模块上的陶瓷纤维散棉(5)、包裹在陶瓷纤维散棉外面的防水复合布(7)和防雨罩(8)，所述的陶瓷纤维拐角模块(1)设置在加热炉的辐射炉管(9)两侧，其特征在于，所述的陶瓷纤维拐角模块(1)顶部呈阶梯型状，所述的支撑板位于陶瓷纤维拐角模块(1)的台阶上，并远离辐射炉管(9)。与现有技术相比，本实用新型具有隔热性能好、密封效果突出、成本低等优点。
The utility model relates to a sealing structure for the top outlet of a heating furnace. The sealing structure comprises a ceramic fiber corner module (1), a support plate (2) on the ceramic fiber corner module, a cover plate (3) laid on the support plate, Ceramic fiber blanket (4) fixed on the cover plate, ceramic fiber loose cotton stuffed on the ceramic fiber corner module (5), waterproof composite cloth wrapped outside the ceramic fiber loose cotton (7) and rain cover (8) , the ceramic fiber corner module (1) is arranged on both sides of the radiation furnace tube (9) of the heating furnace, it is characterized in that the top of the ceramic fiber corner module (1) is in a stepped shape, and the support plate Located on the steps of the ceramic fiber corner module (1) and away from the radiant furnace tube (9). Compared with the prior art, the utility model has the advantages of good heat insulation performance, prominent sealing effect, low cost and the like.
Description
技术领域technical field
本实用新型涉及一种加热炉炉顶出口密封结构，尤其是涉及一种复杂位移工况下的加热炉炉顶出口密封结构。The utility model relates to a sealing structure for a furnace top outlet of a heating furnace, in particular to a sealing structure for a furnace top outlet of a heating furnace under complex displacement working conditions.
背景技术Background technique
在管式加热炉中设计中，辐射炉管进出炉顶处的保温和密封设计一向是炉衬设计中的关键点和难点，在通常情况下，辐射炉管的出口位移仅仅体现在其轴向的位置，径向几乎没有位移，这样情况下，炉顶密封设计相对简单，如图1所示，一种炉顶密封结构，包括陶瓷纤维拐角模块1、辐射炉管9、层铺陶瓷纤维毯4，该炉顶密封结构只需要在辐射炉管出口处设计成拐角模块，再在拐角模块上层铺陶瓷纤维毯即可满足要求，但是在部分化工装置中，例如低碳烷烃脱氢制烯烃装置中，加热炉辐射炉管在炉管轴向和辐射炉管集合管轴向及径向方向均有位移，且各方向位移量均比较大，有的可达200mm，上述的普通的炉顶密封结构已不能满足此位移要求。In the design of the tube heating furnace, the heat preservation and sealing design of the radiant furnace tube entering and exiting the furnace roof has always been the key point and difficulty in the lining design. Under normal circumstances, the exit displacement of the radiant furnace tube is only reflected in its axial direction. There is almost no displacement in the radial direction. In this case, the roof sealing design is relatively simple. As shown in Figure 1, a furnace roof sealing structure includes a ceramic fiber corner module 1, a radiant furnace tube 9, and a layer of ceramic fiber blanket 4 , the roof sealing structure only needs to be designed as a corner module at the outlet of the radiant furnace tube, and then ceramic fiber blankets are laid on the corner module to meet the requirements. However, in some chemical plants, such as low-carbon alkane dehydrogenation olefins , the radiant furnace tube of the heating furnace has displacement in the axial direction of the furnace tube and the axial and radial directions of the radiant furnace tube collection tube, and the displacement in each direction is relatively large, and some can reach 200mm. The above-mentioned common furnace top sealing structure This displacement requirement cannot be met.
针对此种复杂位移的工况下的炉顶密封，各方进行了多种尝试，一种辐射炉管多方向和大位移情况下的炉顶密封结构，如图2所示，该炉顶密封结构包括铺设在陶瓷纤维模块上的支撑板2、铺设在支撑板2上的盖板3、起阻隔烟气作用的松散填塞在盖板3上的陶瓷纤维散棉5以及包裹在陶瓷纤维散棉5外面的防水玻璃纤维布6与防雨罩8，但是该方案存在以下几点不足：Aiming at the furnace roof seal under such complex displacement working conditions, various attempts have been made by various parties. A furnace roof seal structure under the condition of multi-directional and large displacement of the radiant furnace tube is shown in Figure 2. The furnace roof seal The structure includes a support plate 2 laid on the ceramic fiber module, a cover plate 3 laid on the support plate 2, ceramic fiber loose cotton 5 loosely packed on the cover plate 3 and wrapped in ceramic fiber loose cotton 5 outside waterproof glass fiber cloth 6 and rain cover 8, but there are following deficiencies in this scheme:
1.炉顶的支撑板2和高温烟气直接接触，会导致钢板膨胀翘曲，导致盖板3不能在该支撑板2面上自由滑动，直接妨碍辐射炉管的自由滑动，形成应力集中，严重的话到导致炉管破裂，高温易燃介质外泄，形成安全生产事故。1. The direct contact between the support plate 2 of the furnace roof and the high-temperature flue gas will cause the steel plate to expand and warp, causing the cover plate 3 to be unable to slide freely on the surface of the support plate 2, which directly hinders the free sliding of the radiant furnace tube, resulting in stress concentration. If it is serious, it will cause the furnace tube to rupture, and the high-temperature flammable medium will leak out, resulting in a safety production accident.
2.高温的炉顶钢板将会形成一个热导体，将烟气热传至炉顶钢结构梁上，炉顶梁的设计一般为不耐高温的碳钢材料，这样会导致炉顶钢结构超温，降低钢结构强度，影响炉顶钢结构的安全。2. The high-temperature furnace roof steel plate will form a thermal conductor, which will transfer the heat of the flue gas to the furnace roof steel structure beam. temperature, reduce the strength of the steel structure, and affect the safety of the furnace roof steel structure.
3.炉顶钢板和盖板之间在实际使用过程中因炉顶钢板受热变形下垂产生缝隙，这样高温烟气顺着缝隙外窜。理论情况下，松散填塞的陶瓷纤维棉会阻隔烟气，但是实际使用中，随着炉管的移动，散棉会堆积，形成空隙，高温烟气会直接接触耐温只有280℃的防水玻璃纤维布，导致该布变脆，防水胶脱落，使其失效，不再具有密封功能。3. In the actual use process, there is a gap between the furnace roof steel plate and the cover plate due to the deformation and sagging of the furnace roof steel plate, so that the high-temperature flue gas escapes along the gap. In theory, the loosely packed ceramic fiber cotton will block the flue gas, but in actual use, as the furnace tube moves, the loose cotton will accumulate and form gaps, and the high-temperature flue gas will directly contact the waterproof glass fiber with a temperature resistance of only 280 °C cloth, causing the cloth to become brittle, and the waterproof glue falls off, making it ineffective and no longer has a sealing function.
实用新型内容Utility model content
本实用新型的目的就是为了克服上述现有技术存在的缺陷而提供一种隔热性能好、密封性好、成本低、寿命长的加热炉炉顶出口密封结构。The purpose of this utility model is to provide a sealing structure for the top outlet of the heating furnace with good heat insulation performance, good sealing performance, low cost and long service life in order to overcome the defects of the above-mentioned prior art.
本实用新型的目的可以通过以下技术方案来实现：The purpose of this utility model can be achieved through the following technical solutions:
一种加热炉炉顶出口密封结构，该密封结构包括陶瓷纤维拐角模块、安装在陶瓷纤维拐角模块上的支撑板、铺设在支撑板上的盖板、固定在盖板上的陶瓷纤维毯、填塞在陶瓷纤维拐角模块上的陶瓷纤维散棉、包裹在陶瓷纤维散棉外面的防水复合布和防雨罩，所述的陶瓷纤维拐角模块设置在加热炉的辐射炉管两侧，所述的陶瓷纤维拐角模块顶部呈阶梯型状，所述的支撑板位于陶瓷纤维拐角模块的台阶上，并远离辐射炉管。A sealing structure for a heating furnace roof outlet, the sealing structure includes a ceramic fiber corner module, a support plate installed on the ceramic fiber corner module, a cover plate laid on the support plate, a ceramic fiber blanket fixed on the cover plate, and a packing The ceramic fiber loose cotton on the ceramic fiber corner module, the waterproof composite cloth and the rainproof cover wrapped outside the ceramic fiber loose cotton, the ceramic fiber corner module is arranged on both sides of the radiation furnace tube of the heating furnace, and the ceramic fiber The top of the fiber corner module is in a stepped shape, and the support plate is located on the steps of the ceramic fiber corner module and is away from the radiation furnace tube.
台阶型状的陶瓷纤维拐角模块的迎火面一侧凸起，另一侧台阶上设有支撑板，避免了支撑板与高温烟气直接接触，保证对支撑板的隔热。One side of the fire-facing surface of the step-shaped ceramic fiber corner module is raised, and a support plate is provided on the other side of the step, which avoids direct contact between the support plate and the high-temperature flue gas, and ensures the heat insulation of the support plate.
所述的支撑板的材质选用不锈钢06Cr19Ni10，每侧支撑板均为整体式板块，并在该板块上均匀布置膨胀缝，避免了支撑板多段设计中相邻两块支撑板上下错边，从而阻挡盖板滑动。同时膨胀缝的设计也吸收了支撑板的热膨胀量。The material of the support plate is stainless steel 06Cr19Ni10, and the support plate on each side is an integral plate, and the expansion joints are evenly arranged on the plate, which avoids the upper and lower sides of two adjacent support plates in the multi-section design of the support plate, thereby preventing The cover slides. At the same time, the design of the expansion joint also absorbs the thermal expansion of the support plate.
所述的盖板两端设有滑轨，且滑轨端部倒圆，置于支撑板上表面上，可以随炉管一起在支撑板上滑动，同时，特殊的倒圆滑轨有效的减少支撑板对盖板滑动时的阻力；盖板采用分块设计，便于安装。Both ends of the cover plate are provided with slide rails, and the ends of the slide rails are rounded, placed on the upper surface of the support plate, and can slide on the support plate together with the furnace tube. At the same time, the special rounded slide rails effectively reduce the support The resistance when the board slides against the cover plate; the cover plate is designed in blocks for easy installation.
所述的盖板的材质选用低Ni合金ZG35Cr24Ni7SiN。The material of the cover plate is selected from low Ni alloy ZG35Cr24Ni7SiN.
所述的陶瓷纤维毯设有至少四层。The ceramic fiber blanket has at least four layers.
所述的防水复合布为防水高硅氧与陶瓷纤维复合布，包括外层的防水高硅氧布，以及内层的陶瓷纤维布，既满足了耐高温烟气要求，又使复合布保持一定的抗拉强度。The waterproof composite cloth is a waterproof high-silica and ceramic fiber composite cloth, including a waterproof high-silica cloth on the outer layer and a ceramic fiber cloth on the inner layer, which not only meets the requirements of high-temperature smoke resistance, but also keeps the composite cloth at a certain temperature. of tensile strength.
所述的防雨罩横截面上部呈圆台锥体状，下部呈圆柱体状，所述的防水复合布完全被防雨罩罩住。这样，防雨罩可有效的防止雨水落在密封的防水复合布上，减少雨水对防水复合布使用寿命的影响。The upper part of the cross-section of the rainproof cover is in the shape of a conical cone, and the lower part is in the shape of a cylinder, and the waterproof composite cloth is completely covered by the rainproof cover. In this way, the rainproof cover can effectively prevent rainwater from falling on the sealed waterproof composite cloth, and reduce the influence of rainwater on the service life of the waterproof composite cloth.
与现有技术相比，本实用新型具有以下优点：Compared with the prior art, the utility model has the following advantages:
(1)隔热性能好，拐角模块及其顶端的阶梯型设计，能有效避免烟气外窜，保证背部钢结构及软密封复合布的安全和使用系能；(1) Good heat insulation performance, the stepped design of the corner module and its top can effectively avoid the escape of smoke, and ensure the safety and performance of the back steel structure and soft sealing composite cloth;
(2)密封效果好，由于散棉和盖板上层铺毯的设计，使复合布的工作温度较低，保证了布的性能，长期使用下，也不会泄露；(2) The sealing effect is good. Due to the design of the loose cotton and the carpet on the upper layer of the cover plate, the working temperature of the composite cloth is lower, which ensures the performance of the cloth and will not leak under long-term use;
(3)盖板选用低Ni材料铸造，在保证性能的前提下，降低了造价。(3) The cover plate is cast with low Ni material, which reduces the cost under the premise of ensuring performance.
(4)软密封布外层采用防水高硅氧布内层陶瓷纤维布，既具有了硅氧布的抗拉性能又集合了陶纤布的耐高温性能。(4) The outer layer of the soft sealing cloth is made of waterproof high-silica cloth and the inner layer of ceramic fiber cloth, which not only has the tensile properties of silicon oxide cloth but also combines the high-temperature resistance of ceramic fiber cloth.
(5)贴合的防雨罩设计避免雨水直接落在复合布上，减少对布表面所涂硅胶的影响，增加了布的使用寿命。(5) The design of the fitted rain cover prevents rainwater from falling directly on the composite cloth, reducing the impact on the silica gel coated on the cloth surface, and increasing the service life of the cloth.
附图说明Description of drawings
图1为乙烯裂解炉炉顶密封结构横截面剖视图；Fig. 1 is a cross-sectional view of the roof sealing structure of an ethylene cracking furnace;
图2为现有炉管在大位移情况下的炉顶密封结构横截面剖视图；Fig. 2 is the cross-sectional view of the roof seal structure of the existing furnace tube under the condition of large displacement;
图3为本实用新型的炉顶出口密封结构横截面剖视图；Fig. 3 is a cross-sectional view of the roof outlet sealing structure of the utility model;
图4为本实用新型的炉顶出口密封结构纵截面剖视图；Fig. 4 is a longitudinal sectional view of the roof outlet sealing structure of the utility model;
图中，陶瓷纤维拐角模块1，支撑板2，盖板3，陶瓷纤维毯4，陶瓷纤维散棉5，防水玻璃纤维布6，防水复合布7，防雨罩8，辐射炉管9，槽钢10，集合管11。In the figure, ceramic fiber corner module 1, support plate 2, cover plate 3, ceramic fiber blanket 4, ceramic fiber loose cotton 5, waterproof glass fiber cloth 6, waterproof composite cloth 7, rain cover 8, radiant furnace tube 9, groove Steel 10, Manifold 11.
具体实施方式Detailed ways
下面结合附图和具体实施例对本实用新型进行详细说明。The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
实施例1Example 1
如图3与图4所示，一种复杂位移下的加热炉炉顶出口密封结构，该密封结构包括陶瓷纤维拐角模块1、铺设在陶瓷纤维拐角模块1上的支撑板2、铺设在支撑板2上的盖板3、固定在盖板3上的陶瓷纤维毯4、填塞在陶瓷纤维拐角模块1上的陶瓷纤维散棉5、包裹在陶瓷纤维散棉5外面的防水复合布7和防雨罩8，所述的陶瓷纤维拐角模块1设置在加热炉的辐射炉管9两侧。As shown in Figure 3 and Figure 4, a sealing structure for the furnace roof outlet under complex displacement, the sealing structure includes a ceramic fiber corner module 1, a support plate 2 laid on the ceramic fiber corner module 1, a support plate laid on the support plate The cover plate 3 on the 2, the ceramic fiber blanket 4 fixed on the cover plate 3, the ceramic fiber loose cotton 5 stuffed on the ceramic fiber corner module 1, the waterproof composite cloth 7 wrapped outside the ceramic fiber loose cotton 5 and the rainproof The cover 8, the ceramic fiber corner module 1 is arranged on both sides of the radiation furnace tube 9 of the heating furnace.
根据辐射炉管9径向的位移量，设计出合适尺寸的陶瓷纤维拐角模块1，该拐角模块的材料等级可以根据炉膛的烟气温度进行选择，一般和炉顶炉墙保温选用相同等级的即可。陶瓷纤维拐角模块1的上端面设计成阶梯型，台阶型状的陶瓷纤维拐角模块1的迎火面一侧凸起，另一侧设有至少两级台阶，顶部台阶上设置支撑板2，第二级台阶上设置槽钢10，该槽钢10与陶瓷纤维拐角模块1迎火面的凸起形成一凹槽，支撑板2置于该凹槽内，固定在槽钢10上，且凹槽的深度与支撑板的厚度相当。在本实施例中，支撑板的厚度为5mm，且支撑板2的材质选用不锈钢06Cr19Ni10，每侧支撑板2均为整体式板块，并在该板块上均匀布置膨胀缝，避免了支撑板多段设计中相邻两块支撑板上下错边，从而阻挡盖板滑动。同时膨胀缝的设计也吸收了支撑板的热膨胀量。支撑板2上表面靠近迎火面的一侧按照间距300mm左右开约为整个板宽度三分之一的膨胀槽，支撑板2下设有加强筋，该加强筋间材质与支撑板2一致，安装间距可以是单个陶瓷纤维拐角模块1的宽度或者是其整数倍，以便于加强筋安装时位于两相邻的陶瓷纤维拐角模块之间。支撑板2一端与槽钢10焊接固定，另一端与陶瓷纤维拐角模块1的迎火面至少有50mm的距离，来保证对支撑板2的隔热。According to the radial displacement of the radiant furnace tube 9, a ceramic fiber corner module 1 of suitable size is designed. The material grade of the corner module can be selected according to the flue gas temperature of the furnace. Can. The upper end surface of the ceramic fiber corner module 1 is designed to be stepped. One side of the step-shaped ceramic fiber corner module 1 is convex on the fire side, and the other side is provided with at least two steps. A support plate 2 is arranged on the top step. A channel steel 10 is arranged on the second step, and the channel steel 10 forms a groove with the protrusion on the fire-facing surface of the ceramic fiber corner module 1. The support plate 2 is placed in the groove and fixed on the channel steel 10, and the groove The depth is equivalent to the thickness of the support plate. In this embodiment, the thickness of the support plate is 5mm, and the material of the support plate 2 is stainless steel 06Cr19Ni10. The support plate 2 on each side is an integral plate, and the expansion joints are evenly arranged on the plate, avoiding the multi-section design of the support plate. The upper and lower sides of the two adjacent support plates are staggered, thereby preventing the cover plate from sliding. At the same time, the design of the expansion joint also absorbs the thermal expansion of the support plate. On the side of the upper surface of the support plate 2 close to the fire-facing surface, an expansion groove about one-third of the width of the entire plate is opened at a distance of about 300 mm. A reinforcing rib is provided under the support plate 2. The material between the ribs is consistent with that of the support plate 2. The installation distance can be the width of a single ceramic fiber corner module 1 or an integer multiple thereof, so that the reinforcing rib is located between two adjacent ceramic fiber corner modules during installation. One end of the support plate 2 is welded and fixed to the channel steel 10 , and the other end has a distance of at least 50 mm from the fire-facing surface of the ceramic fiber corner module 1 to ensure the heat insulation of the support plate 2 .
盖板3分多块设计，每相邻的两根辐射炉管中间为一盖板，盖板3直接放在支撑板2上，不用焊接，可以自由滑动。盖板3采用铸造形式，材料选用ZG35Cr24Ni7SiN，厚度为8mm，盖板3上设有加强筋，两端设有滑轨，滑轨端部倒圆。盖板3的宽度设计要保证辐射炉管9在径向方向最大位移时还有50mm搭在支撑板2上。盖板3上层铺设四层陶瓷纤维毯4，陶瓷纤维毯4不能太厚，以免影响炉管垂直方向的位移，为保证陶瓷纤维毯4能够与盖板3一起移动，需要用L型锚固件把陶瓷纤维毯4固定在盖板3上面，L型锚固钉间距不超过600mm，至少排布两排，材质选用不锈钢。防水复合布7为防水高硅氧布与陶瓷纤维复合布，一端用压板与槽钢10上的翼缘螺栓固定，另一端固定在集合管11外的保温层上，集合管11与陶瓷纤维拐角模块1中间填塞陶瓷纤维棉，填充的陶瓷纤维散棉不可压实，仅填满即可。在防水复合布7外面再设计一圈0.8mm铝皮材料的防雨罩8，防雨罩8通过自攻螺钉与集合管11外的保温铝皮固定。The cover plate is divided into multiple pieces, and there is a cover plate in the middle of every two adjacent radiation furnace tubes. The cover plate 3 is directly placed on the support plate 2 without welding and can slide freely. The cover plate 3 adopts casting form, the material is ZG35Cr24Ni7SiN, and the thickness is 8mm. The cover plate 3 is provided with reinforcing ribs, and slide rails are provided at both ends, and the ends of the slide rails are rounded. The width of the cover plate 3 is designed to ensure that the radiation furnace tube 9 rests on the support plate 2 by 50 mm when the maximum displacement in the radial direction is achieved. Four layers of ceramic fiber blankets 4 are laid on the upper layer of the cover plate 3. The ceramic fiber blankets 4 should not be too thick, so as not to affect the vertical displacement of the furnace tube. The ceramic fiber blanket 4 is fixed on the top of the cover plate 3, and the distance between the L-shaped anchor nails is not more than 600mm, arranged in at least two rows, and the material is stainless steel. The waterproof composite cloth 7 is a waterproof high-silica cloth and ceramic fiber composite cloth. One end is fixed with a pressure plate and the flange bolt on the channel steel 10, and the other end is fixed on the insulation layer outside the collection pipe 11. The collection pipe 11 and the ceramic fiber corner The middle of the module 1 is filled with ceramic fiber cotton, and the filled ceramic fiber loose cotton cannot be compacted, just fill it up. Design the rain cover 8 of a circle of 0.8mm aluminum skin material outside the waterproof composite cloth 7 again, and the rain cover 8 is fixed by self-tapping screws and the heat preservation aluminum skin outside the collecting pipe 11.
Claims (8)
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105387721A (en) * | 2015-10-12 | 2016-03-09 | 清华大学 | Combined supporting steel beam suitable for high-temperature heating furnace cooling pipe network |
| CN107227169A (en) * | 2016-03-25 | 2017-10-03 | 中国石化工程建设有限公司 | The furnace top insulation heat-proof device of pyrolysis furnace radiant section |
| CN109442043A (en) * | 2018-11-06 | 2019-03-08 | 中国寰球工程有限公司 | Industrial furnace high-temperature hearth seal structure |
-
2015
- 2015-03-24 CN CN201520169072.9U patent/CN204612480U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105387721A (en) * | 2015-10-12 | 2016-03-09 | 清华大学 | Combined supporting steel beam suitable for high-temperature heating furnace cooling pipe network |
| CN107227169A (en) * | 2016-03-25 | 2017-10-03 | 中国石化工程建设有限公司 | The furnace top insulation heat-proof device of pyrolysis furnace radiant section |
| CN107227169B (en) * | 2016-03-25 | 2019-01-22 | 中国石化工程建设有限公司 | The furnace top insulation heat-proof device of pyrolysis furnace radiant section |
| CN109442043A (en) * | 2018-11-06 | 2019-03-08 | 中国寰球工程有限公司 | Industrial furnace high-temperature hearth seal structure |
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