CN211871793U - Heat preservation and sealing structure for gas flue of glass melting furnace - Google Patents
Heat preservation and sealing structure for gas flue of glass melting furnace Download PDFInfo
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- CN211871793U CN211871793U CN202020215170.2U CN202020215170U CN211871793U CN 211871793 U CN211871793 U CN 211871793U CN 202020215170 U CN202020215170 U CN 202020215170U CN 211871793 U CN211871793 U CN 211871793U
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Abstract
A heat preservation and sealing structure of a glass melting furnace gas flue comprises a concrete pit wall with a U-shaped cross section, wherein two parallel clay brick flue side walls are arranged in the concrete pit wall, an arched clay brick flue arch is arranged between the tops of the two clay brick flue side walls, a foam concrete sealing and heat preservation layer is poured between the clay brick flue side wall and the concrete pit wall and between the clay brick flue arch and the concrete pit wall, and the clay brick flue side wall and the clay brick flue arch are wrapped in the foam concrete sealing and heat preservation layer. The utility model discloses glass melting furnace coal gas flue keeps warm and seal structure, its simple structure is stable, construction convenience, keeps warm and sealing performance is good.
Description
Technical Field
The utility model belongs to the technical field of keep warm and seal, especially a glass melting furnace gas flue keeps warm and seal structure.
Background
In the production process of the glass melting furnace using producer gas as fuel, when a certain proportion of air is mixed into the producer gas at a certain temperature, explosion (commonly called blasting) can be generated to cause production safety accidents. The sealing of the gas flues carrying the gas is therefore of critical importance. Meanwhile, the flue is also well insulated, so that high temperature and high heat efficiency of the coal gas are ensured after the coal gas is conveyed for a long distance.
The traditional gas flue structure is: the top of the side wall of the clay brick flue is provided with a clay brick flue arch, two sides of the side wall of the clay brick flue are provided with fastening steel structures, the outer side of the side wall of the clay brick flue is provided with a side wall insulating brick, and the outer side of the clay brick flue arch is provided with an arch insulating brick. The heat preservation and the sealing of the outer wall of a traditional gas flue are generally realized by 50mm rock wool and 230mm light clay brick heat preservation bricks, in the construction process, the rock wool can cause skin itching of workers, the heat preservation bricks at the vertical wall part of the flue are built by using slurry block by block, the heat preservation bricks outside the top arch of the flue are built by using slurry because of radians, some direct dry-stacking heat preservation bricks and some slurry, even if slurry exists, the mortar joint is also large, 2-3 mm required by the building specification can not be guaranteed, and the sealing property and the heat preservation property of the flue are not ideal.
Therefore, in order to realize that the gas flue has good heat insulation performance and can be strictly sealed, a novel material and a construction process need to be found.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a glass melting furnace coal gas flue keeps warm and seal structure, its simple structure is stable, construction convenience, keeps warm and sealing performance is good.
In order to achieve the purpose, the utility model adopts the following technical proposal:
a heat preservation and sealing structure of a glass melting furnace gas flue comprises a concrete pit wall with a U-shaped cross section, wherein two parallel clay brick flue side walls are arranged in the concrete pit wall, an arched clay brick flue arch is arranged between the tops of the two clay brick flue side walls, a foam concrete sealing and heat preservation layer is poured between the clay brick flue side wall and the concrete pit wall and between the clay brick flue arch and the concrete pit wall, and the clay brick flue side wall and the clay brick flue arch are wrapped in the foam concrete sealing and heat preservation layer.
Further, the distance between the side wall of the clay brick flue and the side wall of the concrete pit wall is 17-28 cm.
Further, the distance between the bottom end of the side wall of the clay brick flue and the bottom surface of the concrete pit wall is 13-20 cm.
Further, the distance between the top end of the clay brick flue arch and the top surface of the concrete pit wall is 20-27 cm.
The utility model has the advantages that: the utility model discloses glass melting furnace coal gas flue keeps warm and seal structure, its simple structure is stable, construction convenience, keeps warm and sealing performance is good.
Drawings
FIG. 1 is a schematic structural view of the heat-insulating and sealing structure of the gas flue of the glass melting furnace of the present invention.
Detailed Description
As shown in fig. 1, the utility model provides a glass melting furnace gas flue keeps warm and seal structure, concrete pit wall 1 that is the U type including the cross-section is equipped with the parallel clay brick flue lateral wall 2 of twice in this concrete pit wall 1, is equipped with arched clay brick flue arch 3 between 2 tops of two clay brick flue lateral walls, between this clay brick flue lateral wall 2 and this concrete pit wall 1, pour foam concrete sealed heat preservation 4 between this clay brick flue arch 3 and this concrete pit wall 1, with including this clay brick flue lateral wall 2, the cladding of clay brick flue arch 3.
In order to ensure the sealing and heat insulation effects, the distance between the side wall 2 of the clay brick flue and the side wall of the concrete pit wall 1 is 17-28 cm. The distance between the bottom end of the side wall 2 of the clay brick flue and the bottom surface of the concrete pit wall 1 is 13-20 cm. The distance between the top end of the clay brick flue arch 3 and the top surface of the concrete pit wall 1 is 20-27 cm.
The utility model also provides a construction process of the glass melting furnace gas flue heat preservation and sealing structure, comprising the following steps:
A. constructing a clay brick flue side wall 2 and a clay brick flue arch 3 in the U-shaped concrete pit wall 1, and enabling the top end of the clay brick flue arch 3 to be lower than the top surface of the concrete pit wall 1;
B. producing foamed cement by using a cement foaming machine, pouring the foamed cement into the concrete pit wall 1, and coating the side wall 2 of the clay brick flue and the arch 3 of the clay brick flue;
C. and covering and maintaining after the construction is finished.
In the step B, the raw materials for producing the foaming cement are as follows:
the foam concrete is prepared by mixing appropriate amount of fly ash or slag with sulphoaluminate cement and iron aluminate cement which have less free water and small drying shrinkage and are very favorable for preparing fluid slurry, and the foaming agent is rosin size.
In order to ensure the sealing and heat insulation effects, the distance between the side wall 2 of the clay brick flue and the side wall of the concrete pit wall 1 is 17-28 cm. The distance between the bottom end of the side wall 2 of the clay brick flue and the bottom surface of the concrete pit wall 1 is 13-20 cm. The distance between the top end of the clay brick flue arch 3 and the top surface of the concrete pit wall 1 is 20-27 cm.
In the step B, the flue after the construction of the foam concrete is finished, the foam cement is poured on the outer side of the top of the concrete pit wall 1, and the concrete is poured together with the peripheral terrace to form a road plane (a flat large plane), so that the road plane is convenient for daily passing, operation and the like, and the integral attractiveness of the periphery of the flue of a workshop is facilitated.
The utility model discloses among the glass melting furnace coal gas flue heat preservation and seal structure, the foam concrete has heat preservation and thermal-insulated, fire-resistant, the wholeness can be good, the low shock attenuation of bullet, waterproof nature is good, durability, processing convenience, the feature of environmental protection are good, construction convenience etc. advantage. Replace traditional heat preservation and sealed mode: the heat insulation mode of heat insulation bricks and heat insulation cotton is adopted. The foam concrete is formed by one-step pouring, has no seam, can strictly seal each interface position of the gas flue, and effectively prevents the gas flue from exploding due to air leakage. The construction process is simple, and after pouring is finished, the covering and maintenance are finishedCan be prepared. The temperature of the outer wall of the flue is generally lower than 300 ℃, and the heat resistance of the foam concrete can reach more than 500 ℃, so that the foam concrete has no thermal decomposition, the service life is longer, and the thermal insulation failure cannot be caused. The foam concrete mainly comprises cement, has the service life of more than 50 years, and has very obvious advantages compared with the traditional flue heat-insulating material which is used for 1-2 kiln cycles, namely 5-10 years. Because the foam concrete contains a large number of closed fine pores, the foam concrete has good thermal performance, namely good heat preservation and insulation performance and energy-saving effect. The general density grade is 300-1200kg/m3The foam concrete has a thermal conductivity of 0.08-0.3 w/(m.K). Generally, the heat conductivity coefficient of the 1.0-1.3 high-strength argillaceous thermal insulation brick is 0.35-0.40 w/(m.K). Therefore, the foam concrete is superior to high-strength clay heat-insulating bricks.
The utility model discloses glass melting furnace coal gas flue keeps warm and seal structure, and the wholeness can be good, but the cast in situ construction combines closely with the main part engineering. The heat-insulating layer of the traditional flue and the refractory brick layer of the flue are isolated by rock wool and are not tightly attached, and the heat-insulating layer and the refractory brick layer are tightly combined into a whole when foam concrete is poured. The low elasticity and shock absorption are realized, and the porosity of the foam concrete enables the foam concrete to have low elastic modulus, so that the foam concrete has good absorption and dispersion effects on impact load. The glass kiln using producer gas as fuel often has explosion (commonly called as blasting) caused by air mixed in the gas during operation, and at the moment, the heat-insulating layer of the foam concrete can play a good role in absorbing the explosion impact. The cast-in-place foam concrete has good waterproofness, low water absorption rate, relatively independent closed bubbles and good integrity, so that the cast-in-place foam concrete has certain waterproofness. The flues of glass factories are mostly low on the floor of a workshop, and in areas with low underground water level or much rainfall, the flues are often flooded by water, so that the production is seriously influenced. The flue after the foam concrete pouring is tight and reliable, and the hidden trouble is eliminated. The construction is convenient, the automatic operation can be realized by using a conventional cement foaming machine, and the workload can reach 300 cubic meters per working day. The traditional flue construction generally takes 7-10 days, and the foam concrete construction process can complete construction within one day due to small pouring amount of the flue. The environment-friendly performance is good, the raw materials required by the foam concrete are cement and foaming agent, the foaming agent is mostly close to neutral, and the foam concrete does not contain harmful substances such as benzene, formaldehyde and the like, thereby avoiding environmental pollution and fire-fighting hidden danger. The foam concrete can utilize a large amount of industrial waste residues, has the advantages of low price and the like, and the cost is only 250 yuan/m3About, the cost of the insulating brick (r is 1.0) is about 2000 yuan/m3Therefore, the foam concrete construction process has obvious economic advantages.
It should be noted that the above-mentioned embodiment of the present invention is merely an implementation example, and is provided for clearly understanding the principle of the present invention. Many variations and modifications may be made to the above-described embodiments of the invention without departing from the spirit and scope of the invention. All such modifications and variations are intended to be included herein within the scope of this disclosure and protected by the following claims.
Claims (4)
1. A heat preservation and sealing structure for a glass melting furnace gas flue is characterized by comprising a concrete pit wall with a U-shaped cross section, wherein two parallel clay brick flue side walls are arranged in the concrete pit wall, an arched clay brick flue arch is arranged between the tops of the two clay brick flue side walls, foam concrete sealing heat preservation layers are poured between the clay brick flue side walls and the concrete pit wall and between the clay brick flue arch and the concrete pit wall, and the clay brick flue side walls and the clay brick flue arch are wrapped in the foam concrete sealing heat preservation layers.
2. The glass melting furnace gas flue heat preservation and sealing structure of claim 1, characterized in that: and the distance between the side wall of the clay brick flue and the side wall of the concrete pit wall is 17-28 cm.
3. The glass melting furnace gas flue heat preservation and sealing structure of claim 1, characterized in that: and the distance between the bottom end of the side wall of the clay brick flue and the bottom surface of the concrete pit wall is 13-20 cm.
4. The glass melting furnace gas flue heat preservation and sealing structure of claim 1, characterized in that: the distance between the top end of the clay brick flue arch and the top surface of the concrete pit wall is 20-27 cm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020215170.2U CN211871793U (en) | 2020-02-26 | 2020-02-26 | Heat preservation and sealing structure for gas flue of glass melting furnace |
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| CN202020215170.2U CN211871793U (en) | 2020-02-26 | 2020-02-26 | Heat preservation and sealing structure for gas flue of glass melting furnace |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111233306A (en) * | 2020-02-26 | 2020-06-05 | 北京鑫汇兴通科技有限公司 | Heat preservation and sealing structure of glass melting furnace gas flue and construction process thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111233306A (en) * | 2020-02-26 | 2020-06-05 | 北京鑫汇兴通科技有限公司 | Heat preservation and sealing structure of glass melting furnace gas flue and construction process thereof |
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