CN-117534293-B - Sealing device and sealing method for glass kiln

Abstract

The invention provides a glass kiln sealing device which is not easy to generate volatile matters and has no risk of falling of a body material, and the glass kiln sealing device comprises a cooling device, a heat preservation device and a connecting device, wherein the cooling device is arranged on the heat preservation device, the cooling device and the heat preservation device are connected together through the connecting device, a cooling cavity is arranged in the cooling device, a cooling medium inlet support rod and a cooling medium outlet support rod are arranged on the cooling device, the cooling medium inlet support rod and the cooling medium outlet support rod are respectively communicated with the cooling cavity and form a cooling channel, the heat preservation device is composed of a separation plate and a cover plate, and the separation plate is arranged on the cover plate. The heat preservation device of the glass kiln sealing device adopts a composite structure, is not easy to generate volatile matters, can effectively reduce the falling risk of a body material, thereby obtaining a high-quality glass product, can seal kiln wall holes, reduces heat loss in the kiln, and realizes stable heat during kiln operation.

Inventors

• GUO FUQIANG
• LIU SHUANG
• CHEN XIAOLI
• YUN SHIDONG
• GU JIAN
• CHEN LUNQUAN
• ZHOU HONGYONG
• SHI ZHENGKANG
• HU TONG
• YANG TIANQUAN

Assignees

• 成都光明光电有限责任公司

Dates

Publication Date

20260512

Application Date

20231221

Claims (16)

1. 1. The utility model provides a glass kiln sealing device, its characterized in that includes cooling device (11), heat preservation device (12) and connecting device (13), cooling device (11) set up on heat preservation device (12), just cooling device (11) are in the same place through connecting device (13) with heat preservation device (12), be provided with cooling chamber (14) in cooling device (11) be provided with cooling medium entry bracing piece (15) and cooling medium exit bracing piece (16) on cooling device (11), and cooling medium entry bracing piece (15) and cooling medium exit bracing piece (16) communicate respectively with cooling chamber (14) and constitute the cooling channel, heat preservation device (12) are by division board (18) and apron (19), division board (18) set up on apron (19), connecting device (13) are by connecting rod (24), insulating sleeve (25), insulating ring (26) and fixed gasket (27) constitute, insulating sleeve (25) and insulating ring (26) suit are in connecting rod (24) upper portion, insulating sleeve (26) set up on insulating sleeve (25) and fixed gasket (27) are set up on insulating sleeve (27) outer end (23), the outer cavity (23) completely wraps the heat preservation layer (22), a first connecting hole (17) is formed in the cooling device (11), a second connecting hole (20) is formed in the heat preservation device (12), and the connecting device (13) penetrates through the first connecting hole (17) and the second connecting hole (20) so that the cooling device (11) and the heat preservation device (12) are tightly attached to form a whole.
2. 2. The glass kiln sealing device according to claim 1, characterized in that a partition (21) is arranged in the cooling chamber (14) for planning the directional flow path of the cooling medium.
3. 3. The glass kiln sealing device according to claim 1, characterized in that the diameter of the first connecting hole (17) is larger than the diameter of the insulating sleeve (25), the diameter of the second connecting hole (20) is larger than the diameter of the connecting rod (24) but smaller than the diameter of the insulating sleeve (25), the diameter of the insulating ring (26) is larger than the diameter of the first connecting hole (17), so that the insulating sleeve (25) is located in the first connecting hole (17) of the cooling device (11), and the insulating ring (26) is located on the upper surface of the cooling device (11).
4. 4. The glass kiln sealing device according to claim 1, characterized in that the cooling medium inlet support bar (15) and the cooling medium outlet support bar (16) are arranged on the upper surface or side of the cooling device (11).
5. 5. The glass kiln sealing device according to claim 1, further comprising a through hole (28), the through hole (28) extending through the cooling device (11) and the insulating device (12).
6. 6. The glass kiln sealing device according to claim 1, characterized in that the cooling device (11) is made of a heat-resistant metal material, the wall thickness of the material for manufacturing the cooling cavity (14) is 1-6mm, the cooling cavity (14) is made of a metal material with a normal-temperature heat conductivity coefficient not lower than 10 w/(m.K), the isolation plate (18) is made of a heat-insulating material with a thickness of 5-20mm, the heat-insulating layer (22) is made of a zirconia fiber board, an aluminosilicate fiber board or a fiber board formed by the fiber mixture, the insulating sleeve (25) and the insulating ring (26) are made of corundum or fused quartz, and the outer cavity (23), the connecting rod (24) and the fixing gasket (27) of the cover plate (19) are made of platinum metal and reinforced materials thereof.
7. 7. The glass kiln sealing device according to claim 1, wherein the cooling device (11) is made of nickel-chromium alloy materials, the wall thickness of the manufacturing material of the cooling cavity (14) is 2-4mm, the cooling cavity (14) is made of metal materials with normal-temperature heat conductivity coefficient of more than 15 w/(m.K), the isolation plate (18) is made of nonmetal heat insulation materials with normal-temperature heat conductivity coefficient of not more than 2 w/(m.K), the heat insulation layer (22) is made of fiber boards with normal-temperature heat conductivity coefficient of not more than 0.3 w/(m.K), and the outer cavity (23), the connecting rod (24) and the fixing gasket (27) of the cover plate (19) are made of platinum-rhodium alloy or platinum-rhodium dispersion materials.
8. 8. The glass kiln sealing device according to claim 1, wherein the isolation plate (18) is made of mica plates, mullite insulating bricks or fused quartz bricks, the insulating layer (22) is made of materials with the volume density of 300-700kg/m 3 , and the outer cavity (23) of the cover plate (19), the connecting rod (24) and the fixing gasket (27) are made of platinum alloy.
9. 9. The glass kiln sealing device according to claim 1, characterized in that the mass percentage of organic matter in the material of the insulating layer (22) is not more than 2%.
10. 10. The glass kiln sealing device according to claim 1, wherein 2-8 cooling medium inlet support rods (15) and 2-10 cooling medium outlet support rods (16) are arranged in total, the diameters of the cooling medium inlet support rods (15) and the cooling medium outlet support rods (16) are 8-20mm, the height of the cover plate (19) is 30-200mm, 2-10 connecting devices (13) are arranged, the connecting devices (13) sequentially penetrate through a first connecting hole (17) on the cooling device (11) and a second connecting hole (20) on the heat preservation device (12) and are used for connecting and fixing a connecting rod (24) with an outer cavity (23) of the cover plate (19) of the heat preservation device (12) in a welding mode, when platinum metal and reinforced materials thereof are adopted for manufacturing the outer cavity (23) of the cover plate (19), the connecting rod (24) and a fixed gasket (27), the wall thickness of the material of the outer cavity (23) of the cover plate (19) is 0.25-2.5mm, the diameter of the connecting rod (24) is 5-20mm, and the wall thickness of the connecting rod (24) is not smaller than the hollow tube (20 mm).
11. 11. The glass kiln sealing device according to claim 1, wherein the cover plate (19) has a height of 50-100mm, and when the outer cavity (23), the connecting rod (24) and the fixing gasket (27) of the cover plate (19) are made of platinum metal and reinforced materials thereof, the wall thickness of the outer cavity (23) and the fixing gasket (27) of the cover plate (19) is 0.5-2.0mm.
12. 12. A sealing method using the glass kiln sealing device according to claim 1, comprising the steps of: 1) a cooling medium inlet support rod (15) and a cooling medium outlet support rod (16) in a cooling device (11) are respectively connected with a cooling medium pipeline special for a production line, so that the structural strength of the cooling medium inlet support rod (15) and the cooling medium outlet support rod (16) after connecting pipelines is ensured to support the cooling device (11), a heat preservation device (12) and a connecting device (13); 2) The cooling medium can smoothly flow into the cooling cavity (14) from the cooling medium inlet support rod (15) after flowing through the external pipeline, directionally flows in a flow channel formed by the inner cavity wall surface of the cooling cavity (14) and the partition plate (21), and is discharged from the cooling medium outlet support rod (16) after fully contacting the cooling cavity (14); 3) Detecting the temperature and flow of the cooling medium inlet support rod (15) and the cooling medium outlet support rod (16), determining the stable flow of the cooling medium, ensuring that heat in the cooling cavity (14) generates convective heat exchange through the flow of the cooling medium during the working period, and taking away from the sealing device; 4) Determining the position of a kiln wall hole (8), placing the lower surface of a cover plate (19) to the position right above the kiln wall hole (8), fixing a sealing device according to the position of the kiln wall hole (8), and attaching the lower surface of the cover plate (19) to the kiln wall hole (8) when the opening position is on the top of the kiln, wherein when the opening position is on the side wall or the inclined surface of the kiln outer wall, the lower surface of the cover plate (19) is attached to the kiln wall hole (8) by using a cooling medium inlet support rod (15) and a cooling medium outlet support rod (16) as support points; 5) After the installation is finished, the temperature and flow of a cooling medium are controlled within the process requirement range, heat in the kiln is transferred to the heat preservation device (12) through the kiln wall holes (8) in the production process, the heat transmittance is greatly reduced through the heat insulation effect of the heat preservation layer (22), and meanwhile, a small amount of heat is transferred to the cooling medium through the heat preservation device (12) and then is discharged in time through the cooling cavity (14).
13. 13. The sealing method of the glass kiln sealing device according to claim 12, wherein in the step 2), the directional flow is that the cooling medium enters the cooling cavity (14) through the cooling medium inlet supporting rod (15), and a single-channel unidirectional flow mode is set for the cooling medium directional flow channel through the inner cavity wall surface of the cooling cavity (14) and the partition plate (21).
14. 14. The sealing method of the glass kiln sealing device according to claim 12, characterized in that the cooling medium in step 2) is compressed air, oxygen, nitrogen, water or oil, and the temperature difference of the cooling medium in the cooling medium inlet support rod (15) and the cooling medium outlet support rod (16) is not more than 30 ℃, when the cooling medium is gas, the pressure of the gas before entering the cooling medium inlet support rod (15) is 0.3-0.7MPa, when the cooling medium is liquid, the pressure of the liquid before entering the cooling medium inlet support rod (15) is 0.3-0.5MPa, and the temperature of the liquid before entering the cooling medium inlet support rod (15) is 25-45 ℃.
15. 15. The sealing method of the glass kiln sealing device according to claim 12, characterized in that in step 2) the temperature difference of the cooling medium in the cooling medium inlet support bar (15) and the cooling medium outlet support bar (16) is within 20 ℃, and when the cooling medium is a gas, compressed gas with a temperature below 35 ℃ is used.
16. 16. The sealing method of the glass kiln sealing device according to claim 12, wherein in the step 4), the pore diameter of the kiln wall hole (8) is more than phi 100mm, and in the production process in the step 5), the temperature inside the kiln is 1600 ℃.

Description

Sealing device and sealing method for glass kiln Technical Field The invention relates to a sealing device of a glass kiln used in the glass melting process and a sealing method for reducing internal heat loss and improving glass quality in the kiln operation process by using the sealing device. Background In the glass melting process, the glass kiln is used as a reaction container for melting powder and forming low-temperature eutectic, has the characteristic of relatively airtight space, and can reduce heat loss of the glass kiln as much as possible. Meanwhile, in order to maintain the heat required by the reaction of the glass at a high temperature, the kiln is usually continuously supplemented with heat by means of combustion, electric energy heating and the like, so that the kiln can be continuously and stably at a specified temperature. The sealing performance of the kiln is important for a single crucible kiln with the key processes of smelting, clarifying, homogenizing and the like being completed in the same space. However, in the process execution process, in order to solve the process requirements of uniformity improvement, glass inner space and liquid level condition observation and the like in the glass melting process, holes are usually formed in the wall surface of a kiln, and devices such as a stirrer, a bubbling pipe, an industrial television lens, a laser liquid level meter and the like are added to assist the glass production process, so that the stable and controllable glass production state is ensured. The current sealing method for the furnace wall surface open hole adopts a refractory material with a certain shape to directly seal the open hole so as to solve the problem of preventing the heat loss of the furnace. However, when the refractory material is adopted for sealing, the replacement period is frequent, the possibility that the material bursts and falls into the glass liquid of the kiln due to uneven cold and hot at high temperature to form stone defects exists, and meanwhile, the volatile matters in the glass liquid in the inner space of the kiln are accumulated to easily cause the sealing bricks to be fused and adhered with the peripheral refractory material at high temperature to cause wall surface holes to be wasted, so that the process execution and the glass production quality are affected. As shown in fig. 1, the conventional kiln structure for glass production generally comprises a kiln body 2, an electrode 3, a burning gun 4, a charging port 5, a glass liquid outlet 6 and other key parts, wherein powder, glass slag and a mixture thereof are added into the interior space of the kiln through the charging port 5 in the glass melting process, molten glass 7 is formed through high-temperature chemical and physical reactions, and the glass 7 is subjected to high-temperature process temperature control by heat generated by combustion of fuel gas provided by the burning gun 4 and heat supplied by direct energization of the electrode 3. In order to meet specific process requirements, such as stirring, bubbling, liquid level monitoring, high-temperature furnace observation and the like, kiln wall holes 8 are additionally arranged on the kiln body 2 to meet corresponding process requirements. In the existing production process, the sealing of the kiln wall hole 8 is mainly realized by adopting a mode of directly sealing the refractory material 1, the mode is simple and feasible for sealing non-critical positions, but volatile matters are easy to generate during long-term use, even the problem of adhesion between a plugging material and a furnace body can be caused, so that the kiln wall hole 8 is difficult to repeatedly use for a long time, and the refractory material 1 for sealing is partially fallen into the glass liquid 7 to cause the melting balance of the glass liquid 7 to be broken, so that the risks of reduced melting quality and reduced yield are generated. Disclosure of Invention The invention aims to solve the technical problem of providing a glass kiln sealing device which is not easy to generate volatile matters and has no risk of falling of a body material. The invention also provides a sealing method adopting the sealing device of the glass kiln. The technical scheme includes that the glass kiln sealing device comprises a cooling device, a heat preservation device and a connecting device, wherein the cooling device is arranged on the heat preservation device, the cooling device and the heat preservation device are connected together through the connecting device, a cooling cavity is formed in the cooling device, a cooling medium inlet support rod and a cooling medium outlet support rod are arranged on the cooling device, the cooling medium inlet support rod and the cooling medium outlet support rod are respectively communicated with the cooling cavity and form a cooling channel, the heat preservation device is composed of a separation plate and a cover plate, and th