Sealing structure and method for outlet docking area of platinum channel cooling pipe

Abstract

The application discloses a sealing structure and method for the butt joint area of the outlet of a platinum channel cooling pipe, and the butt joint is realized through the butt joint flange formed by the outer turning of the butt joint port between the cooling section and the latter half section of the cooling pipe, the injection filling area is formed between the main section support bricks outside the cooling pipe, the butt joint flange of the butt joint area and the butt joint area support bricks outside form a butt joint filling area, the injection hole is opened on the butt joint area support brick, the cavity is opened inside, the injection hole is communicated with the cavity, and the partition filling sealing of different positions is realized, the structure sets the butt joint area between the cooling section and the latter half section of the cooling pipe, the butt joint flanges at both ends are attached and connected, the butt joint area support bricks are installed outside the butt joint flanges, the butt joint sealing area is filled, and the sealing of the outlet of the cooling pipe is realized; through the direct butt joint mode of the flange, the local fine filling is carried out in combination with the local independent refractory structure after the butt joint is carried out in the full spraying mode, and the sealing and the later glass liquid erosion resistance of the area are improved.

Description

Technical Field

[0001] This invention belongs to the field of substrate glass manufacturing technology, specifically relating to a sealing structure and method for the outlet docking area of ​​a platinum channel cooling tube. Background Technology

[0002] With the continuous development of substrate glass manufacturing technology, the requirements for long life and high reliability of equipment are also constantly increasing. For platinum channel equipment, the local damage or even cracking caused by the continuous high-temperature oxidation and volatilization of the body material is one of the main problems at present.

[0003] Although platinum-rhodium alloys possess the basic performance for long-term high-temperature operation, in environments above 1400℃, the Pt and Rh elements in the platinum body will continuously undergo oxidation and decomposition reactions with O2. In the localized porous environment formed with the refractory material, from oxidation and volatilization to saturation decomposition, the residual O2 atmosphere will create a localized cycle, causing secondary crystallization of the material on the refractory surface. This leads to random thinning and cracking of localized areas on the surface of the platinum equipment, further resulting in the leakage of internal high-temperature molten glass. When the high-temperature molten glass enters the refractory environment, it will undergo a high-temperature corrosive chemical reaction, and within several months, the refractory in that area will be corroded and melted. Ultimately, this will lead to severe deformation of the platinum body and even the risk of localized "red glow" leakage. This will not only cause later defects such as stones and bubbles, but may even directly threaten the safety of the equipment.

[0004] Regarding the platinum volatilization issue mentioned above, current technology generally employs a protective coating of oxides of elements such as Zr, Al, and Y on the platinum surface. This significantly improves the anti-oxidation and volatilization effect of platinum, increasing its lifespan by more than two times, reaching over three years. However, for certain areas, such as the connection between the cooling outlet and the stirring inlet, since the platinum channel mainly consists of three sections—the front section, the cooling section, and the rear section—in actual installation, considering modular assembly and expansion, the cooling pipe is usually precisely cut according to the actual allowance on site before welding. Therefore, for this connection area, an uncoated welding zone must be reserved, as coated platinum cannot be directly welded. Due to the pre-reserved uncoated zone, after welding, a 100mm to 150mm platinum exposure area will appear, which will be a serious risk point in subsequent operation.

[0005] In the current phase, the method of externally wrapping high-temperature resistant alumina ribbons combined with local alumina mud filling was used for this area. However, in practice, after a long period of operation, the area generally experienced significant evaporation of platinum and thinning and breakage. Summary of the Invention

[0006] The purpose of this invention is to provide a sealing structure and method for the outlet docking area of ​​a platinum channel cooling tube, so as to overcome the problem of excessive evaporation and thinning and damage of platinum in the platinum channel after long-term operation of the docking area of ​​the cooling section of the platinum tube in the prior art.

[0007] To solve the above problems, the present invention adopts the following technical solution;

[0008] A sealing structure for the outlet docking area of ​​a platinum channel cooling pipe includes a cooling section and a rear section. Main section support bricks are installed on the outside of the cooling section and the rear section. The cooling section and the rear section are fixedly connected via a docking area, which includes a docking flange and docking area support bricks. The ends of the cooling section and the rear section that are connected are respectively folded outwards to form docking flanges. A docking area support brick is provided on the outside of the docking flanges. The docking area support bricks have injection holes and internal cavities, with the injection holes communicating with the internal cavities. Main section filling areas are left between the main section support bricks and the cooling section and the rear section, respectively. A docking filling area is left between the docking area support bricks and the docking flanges. The main section filling area and the docking filling area are isolated by the docking area support bricks.

[0009] Furthermore, the supporting bricks in the docking area adopt a circular structure, including an upper supporting brick and a lower supporting brick, both of which have the same outer contour structure, and both the upper supporting brick and the lower supporting brick have cavities inside.

[0010] Furthermore, the inner surface of the supporting brick in the docking area is in contact with the cooling pipe.

[0011] Furthermore, the outer surface of the main section support brick and the connecting area support brick are flush.

[0012] Furthermore, the two mating flanges at the docking port of the cooling section and the rear half section are connected and fixed by welding.

[0013] Furthermore, the diameter of the mating flange is smaller than the height of the cavity inside the supporting brick of the mating area.

[0014] A sealing method for the outlet docking area of ​​a platinum channel cooling tube includes the following steps:

[0015] Step 1: Complete the connection and installation of the cooling section and the rear half of the cooling pipe with the docking area;

[0016] Step 2: Grout the cooling section and the main section filling area between the cooling pipe and the main section support bricks using alumina slurry.

[0017] Step 3. After the areas on both sides of the mating zone are filled, ZrO2 fine powder is injected into the mating filling area through the injection hole on the supporting brick of the mating zone to fill the area around the mating flange and complete the seal.

[0018] Furthermore, before the cooling section and the rear half of the cooling pipe are connected and installed with the docking area, the entire surface of the cooling section is sprayed with a coating.

[0019] Furthermore, the ZrO2 fine powder has a particle size range of 0.10 mm to 0.15 mm, and the filling process adopts a layered, equal-density method.

[0020] Furthermore, during the filling process of the docking filling area, the surface of the supporting brick in the docking area is continuously vibrated to ensure that the ZrO2 fine powder can better fill the bottom and surrounding gaps of the docking filling area. The filling amount is calculated in advance according to the volume to ensure the full density of the filling material.

[0021] Compared with the prior art, the present invention has the following beneficial technical effects:

[0022] This invention relates to a sealing structure for the outlet docking area of ​​a platinum channel cooling pipe. The docking is achieved through a docking flange formed by the outward-curving docking ports of the cooling section and the rear half of the cooling pipe. Main section support bricks are installed outside the cooling section and the rear half of the cooling pipe, forming a main section filling area between the main section support bricks and the cooling section and the rear half. Docking area support bricks are installed outside the docking flange, forming a docking filling area between the docking flange and the docking area support bricks. The docking area support bricks have injection holes and internal cavities, with the injection holes communicating with the cavities to achieve zoned filling and sealing at different locations. The structure achieves a seal at the outlet of the cooling pipe by setting a docking zone between the cooling section and the rear half of the cooling pipe, connecting the two ends with docking flanges, installing support bricks in the docking zone outside the docking flanges, and filling the docking sealing zone. In addition, the cooling section and the rear half of the cooling pipe are connected by docking flanges in the docking zone, and the interface area of ​​the two docking flanges is far away from the cooling pipe. Therefore, it can achieve full-surface spray protection of the cooling pipe, solving the problem of large-scale volatilization and thinning and damage of platinum channels in the docking zone of the platinum pipe cooling section after long-term operation.

[0023] Preferably, the inner surface of the supporting brick in the docking area is in contact with the cooling pipe to isolate the main section filling area from the docking filling area, and the outer surface is flush with the main section supporting brick to facilitate the unified installation and sealing of the external insulation material.

[0024] Preferably, the height of the mating flange is less than the height of the cavity inside the supporting brick in the mating area. After filling the mating filling area, a complete seal can be achieved for the mating flange.

[0025] This invention also provides a sealing method for the outlet docking area of ​​a platinum channel cooling pipe. First, the cooling section, the rear half, and the docking area of ​​the cooling pipe are installed and connected. Then, the docking area support bricks and the main section support bricks are installed externally. Next, alumina slurry is used to fill the main section filling area. After the areas on both sides of the docking area are filled, ZrO2 fine powder is injected into the docking filling area through the injection hole on the docking area support brick to fill the area around the docking flange, completing the filling and sealing of the sealing structure. This method, through the design of a brand-new docking method, adopts a direct flange docking after full spraying, combined with the external refractory structure, to achieve precise filling of this area, thereby improving the sealing of this area and its resistance to glass melt erosion in the later stage.

[0026] Preferably, the welding position of the flange interface is far away from the cooling pipe, so there is no need to reserve a welding area that is not to be sprayed, and the entire surface of the cooling pipe can be sprayed to form complete protection for the cooling pipe.

[0027] Preferably, the docking filling area is filled with ZrO2 fine powder. Compared with Al2O3 filling powder, ZrO2 filling material has better density and flowability under natural stacking conditions, and ZrO2 material has better resistance to glass erosion than Al2O3.

[0028] Preferably, the filling process adopts a layered, equal-density method, that is, according to the filling height corresponding to the platinum pipe diameter range, targeted compaction is carried out at certain heights, and the process is repeated multiple times. During the process, the surface of the supporting brick in the docking area is continuously vibrated to ensure that the powder fills the bottom and surrounding gaps more fully. The filling amount is calculated in advance according to the volume to ensure the full density of the filling material. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the sealing structure of the outlet docking area of ​​the platinum channel cooling pipe of the present invention.

[0030] Figure 2 This is a schematic diagram of the sealing structure of the cooling section and the rear half of the outlet docking area of ​​the platinum channel cooling pipe of the present invention.

[0031] Figure 3 A schematic diagram of the sealing structure of the flange at the outlet docking zone of the platinum channel cooling pipe of this invention.

[0032] Figure 4 The diagram shows the supporting brick structure of the sealing structure of the outlet docking area of ​​the platinum channel cooling pipe of this invention.

[0033] Figure 5 The diagram shows the structure of the supporting bricks under the sealing structure of the outlet docking area of ​​the platinum channel cooling pipe of this invention.

[0034] Figure 6Flowchart of the sealing method for the outlet docking area of ​​the platinum channel cooling pipe of the present invention.

[0035] In the diagram, 1 is the cooling section; 2 is the rear section; 3 is the docking area; 4 is the main section filling area; 5 is the main section support brick; 6 is the docking area support brick; 6-1 is the upper support brick; 6-2 is the lower support brick; 6-3 is the injection hole; 7 is the docking filling area; and 8 is the docking flange. Detailed Implementation

[0036] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0037] like Figures 1-5 As shown, this embodiment of the invention provides a sealing structure for the outlet docking area of ​​a platinum channel cooling pipe. The cooling section 1 and the rear half 2 of the cooling pipe are connected through the docking area 3. The cooling pipe includes the cooling section 1 and the rear half 2. A main section support brick 5 is set on the outside of the cooling pipe. The gap between the two is the main section filling area 4. The docking area 3 includes a docking flange 8 and a docking area support brick 6. The docking flange 8 is an outward-facing structure at the port where the cooling section 1 and the rear half 2 are connected. That is, the docking flange 8 at the port of the cooling section 1 is an integral structure with the cooling section 1, and the docking flange 8 at the port of the rear half 2 is an integral structure with the rear half 2. During docking, the two docking flanges 8 are fitted together, and the edge of the docking flange 8 is welded and sealed. The docking area support brick 6 is installed on the outside of the docking flange 8. The gap between the two forms the docking filling area 7. An injection hole 6-3 is opened on the docking area support brick 6. The injection hole 6-3 is connected to the cavity inside the docking area support brick 6 for the injection of sealant.

[0038] Specifically, the supporting brick 6 in the docking area has a cavity inside and adopts a ring-shaped structure. It is spliced ​​by the upper supporting brick 6-1 and the lower supporting brick 6-2. Its inner surface is in contact with the cooling pipe, thereby separating the main section filling area 4 from the docking filling area 7. Its outer surface is flush with the outer surface of the main section supporting brick 5, which facilitates the unified installation and sealing of the surrounding insulation material.

[0039] The upper support brick 6-1 and the lower support brick 6-2 have the same external structure, both adopting a semi-circular structure. The difference is that the upper support brick 6-1 has an injection hole 6-3, and the injection hole 6-3 is connected to the internal cavity of the support brick 6 in the docking area, which is used for the injection of sealing filler.

[0040] The external dimensions of the mating flange 8 of cooling section 1 and the rear section 2 are the same. The two are tightly fitted and connected and fixed by welding. The external dimensions of the mating flange 8 are relatively large, so its welding position, i.e. the weld seam, is far away from the cooling pipe. Moreover, it can also spray the entire surface of the cooling pipe body, which effectively protects the cooling pipe body. The exposed weld area is far away from the cooling pipe.

[0041] The supporting brick 6 of the docking area is covered by the outside of the docking flange 8, and the inner surface of the brick is attached to the cooling pipe, forming a docking filling area 7 inside. The height of the docking flange 8 is slightly less than the height of the internal cavity of the supporting brick 6 of the docking area, so as to ensure the sealing of the sealing filler to the docking area 3.

[0042] This application also provides a sealing method for the outlet docking area of ​​a platinum channel cooling tube, such as... Figure 6 As shown, the specific process is as follows: First, the cooling section 1, the second half section 2 and the docking area 3 are connected and installed. Then, the main section support brick 5 in the normal area is installed first, forming a filling gap of about 15mm between the platinum body and the main section support brick 5, which is the main section filling area 4. The docking area support brick 6 is installed and placed in advance. Alumina slurry is used to grout the main section filling area 4. After the main section filling areas 4 on both sides are filled, the docking area is filled specifically.

[0043] The filling of the docking filling area 7 uses brand-new ZrO2 fine powder with a particle size of 0.10mm to 0.15mm. The filling process adopts a layered, equal-density method, that is, according to the filling height corresponding to the platinum pipe diameter range, targeted compaction is carried out at certain heights, and this is done in multiple times. During the process, the surface of the docking area support brick 6 is continuously vibrated to ensure that the powder fully fills the bottom and surrounding gaps. The filling amount is calculated in advance according to the volume to ensure the full density of the filling material.

[0044] Since the welding position of flange 8 is far from the cooling pipe, the cooling pipe can be fully coated before the sealing structure is assembled. Therefore, there is no need to reserve an uncoated welding area for this docking area, thus achieving full surface protection for the cooling pipe.

[0045] After the filling is completed, during the actual heating stage, the mating area will not experience tensile stress due to the expansion and extrusion force, which would cause the mating area 3 to separate. After high temperature, the filler is fully sintered, which makes the platinum flange of the mating area 3 fit tightly and has strength support, ensuring the stability of the structure in this area. At the same time, it achieves the dual protection measures of full coating protection plus external fine zirconium powder filling.

[0046] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A seal structure for a platinum gold passageway cooling tube outlet docking area, characterized by, The application relates to a cooling pipe, which comprises a cooling section (1) and a rear half section (2), and main section supporting bricks (5) are externally arranged on the cooling section (1) and the rear half section (2); the cooling section (1) and the rear half section (2) are fixedly connected through a butt joint area (3); the butt joint area (3) comprises butt joint flanges (8) and butt joint area supporting bricks (6); the butt joint flanges (8) are formed by outwardly folding the end ports of the cooling section (1) and the rear half section (2) which are opposite to each other; the butt joint area supporting bricks (6) are arranged outside the butt joint flanges (8); the butt joint area supporting bricks (6) are provided with pouring holes (6-3) and cavities; the pouring holes (6-3) are communicated with the cavities; main section filling areas (4) are respectively arranged between the main section supporting bricks (5) and the cooling section (1) and the rear half section (2); a butt joint filling area (7) is arranged between the butt joint area supporting bricks (6) and the butt joint flanges (8); and the main section filling areas (4) and the butt joint filling area (7) are isolated through the butt joint area supporting bricks (6). The butt joint area supporting bricks (6) adopt a circular ring structure and comprise upper supporting bricks (6-1) and lower supporting bricks (6-2); the two have the same outer contour structure; and the upper supporting bricks (6-1) and the lower supporting bricks (6-2) are internally provided with cavities. The inner surfaces of the brick bodies of the butt joint area supporting bricks (6) are attached to the cooling pipe. The two butt joint flanges (8) of the butt joint ports of the cooling section (1) and the rear half section (2) are fixedly connected through welding.

2. The sealing structure of the outlet docking area of a platinum channel cooling tube according to claim 1, characterized in that, The outer surfaces of the brick bodies of the main section supporting bricks (5) and the butt joint area supporting bricks (6) are flush.

3. The sealing structure of the outlet docking area of a platinum channel cooling tube according to claim 1, characterized in that, The diameter of the butt joint flanges (8) is smaller than the height of the cavities in the butt joint area supporting bricks (6).

4. A sealing method based on the sealing structure of the outlet docking area of the platinum channel cooling pipe according to claim 1, characterized in that, The application further discloses a manufacturing method of the cooling pipe. Step one: completing butt joint installation of the cooling pipe cooling section (1), the rear half section (2) and the butt joint area (3); Step two: filling the main section filling areas (4) between the cooling pipe cooling section (1) and the rear half section (2) and the main section supporting bricks (5) through grouting with alumina slurry; Step three: after filling the areas on both sides of the butt joint area (3), filling the butt joint filling area (7) with ZrO2 fine powder through the pouring holes (6-3) on the butt joint area supporting bricks (6) to complete sealing of the butt joint flanges (8).

5. A method of sealing the outlet interface of a platinum channel heat sink tube according to claim 4, wherein, The cooling section (1) is fully surface sprayed before butt joint installation of the cooling pipe cooling section (1), the rear half section (2) and the butt joint area (3).

6. A method of sealing the outlet interface of a platinum channel heat sink tube according to claim 4, wherein, The particle size of the ZrO2 fine powder ranges from 0.10mm to 0.15mm, and the filling process adopts a layered component equal-density mode.

7. A method of sealing the outlet interface of a platinum channel heat sink tube according to claim 4, wherein, The surface of the butt joint area supporting bricks (6) is vibrated during the filling process of the butt joint filling area (7) to ensure that the ZrO2 fine powder can be better filled into the bottom and the peripheral gaps of the butt joint filling area (7), and the filling amount is determined in advance according to the volume to ensure sufficient compactness of the filling material.

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