CN214496086U - Cooling air system for thermal repair first-aid repair glass small furnace bottom plate collapse - Google Patents
Cooling air system for thermal repair first-aid repair glass small furnace bottom plate collapse Download PDFInfo
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- CN214496086U CN214496086U CN202023344424.XU CN202023344424U CN214496086U CN 214496086 U CN214496086 U CN 214496086U CN 202023344424 U CN202023344424 U CN 202023344424U CN 214496086 U CN214496086 U CN 214496086U
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Abstract
The utility model discloses a cooling air system for the collapse of a hot-patch rush-repair glass small furnace bottom plate, which comprises a fan, a main air pipe connected with the fan and a plurality of branch air pipes connected with the main air pipe; each small furnace is correspondingly provided with 3-5 branch air pipes, and the tail end of each branch air pipe is connected with an air nozzle; the blast nozzles are positioned below the corresponding small furnace bottom plates and face the small furnace bottom plates; and blowing air to the small furnace bottom plate through the main air pipe, the branch air pipes and the air nozzles by a fan for cooling. The utility model discloses a cooling air system that is used for hot patching to salvage glass small furnace bottom plate to collapse can carry out the cooling of blowing to the small furnace bottom plate independently, salvagees the in-process on line, does not influence the cooling of other production key processes, has guaranteed going on smoothly of production. And simultaneously, the utility model discloses can carry out blast cooling to the small furnace bottom plate pertinence, cooling efficiency is high.
Description
Technical Field
The utility model belongs to the technical field of glass makes, concretely relates to glass melting furnace correlation technique.
Background
Under the guidance of national energy-saving and consumption-reducing policies, in order to realize the operation targets of increasing the yield, reducing the energy consumption and improving the benefit, each glass enterprise continuously puts in a float glass production line of an ultra-large melting furnace with the pulling quantity more than 900 t/d. However, due to various reasons such as a combustion system of the melting furnace, the wall of the melting furnace is seriously corroded, the risk of glass water leakage exists, the problems of collapse of a small furnace bottom plate, inward inclination of a breast wall and the like are caused, the service life of the furnace cannot meet the design age requirement, and water is forced to be discharged in advance for cold repair. In addition, the phenomenon of small furnace bottom plate collapse generally exists in the later stage of the operation of the production line kiln of an enterprise, and particularly the phenomenon of small furnace bottom plate which is contacted with nozzle bricks and spacing bricks at the nozzle of the small furnace is easy to be burnt and seriously collapsed, so that the hot repair and remediation operation is needed.
The heat repair remedy of the collapse of the small furnace bottom plate is systematic work of the heat repair process of the glass kiln. The hot repair and remedy is to repair the bottom plate of the small furnace to collapse and restore the building on line in a high-temperature hot state, and the work involves various cross operations, so that the requirement is extremely high in degree of adaptability and high in construction difficulty, and the maintenance and use effects are affected when any link is not in place.
In the process of on-line hot patching and first-aid repair, in order to ensure the cooling strength of arch ballast, L hanging wall and pool wall, it is not allowed to induce air from these cooling air systems to cool the bottom plate of the small furnace. Therefore, an independent cooling air system needs to be added to independently blow air to cool the bottom plate of the small furnace.
SUMMERY OF THE UTILITY MODEL
The utility model provides a cooling air system that is used for hot patching to salvage glass fritter bottom plate to collapse can carry out the blast cooling to the fritter bottom plate independently.
The utility model provides a technical scheme that its technical problem adopted is:
a cooling air system for hot patching and rush-repair of glass small furnace bottom plate collapse comprises: the air conditioner comprises a fan, a main air pipe connected with the fan, and a plurality of branch air pipes connected with the main air pipe; 3-5 branch air pipes are correspondingly arranged on each small furnace, and the tail end of each branch air pipe is connected with an air nozzle; the air nozzles are positioned below the corresponding small furnace bottom plates and face the small furnace bottom plates; the air nozzle is a trapezoidal air nozzle, a round connector is arranged at the joint of the air nozzle and the branch air pipe, and an air outlet of the air nozzle is rectangular; the width of the air outlet of the air nozzle is larger than the diameter of the circular interface, and the thickness of the air outlet of the air nozzle is smaller than the diameter of the circular interface; and blowing air to the small furnace bottom plate through the main air pipe, the branch air pipes and the air nozzles by a fan for cooling.
In one embodiment, the air nozzles include a first air nozzle and a second air nozzle.
In one embodiment, the width of the air outlet of the first air nozzle is 265-275 mm, the thickness of the air outlet of the first air nozzle is 18-22 mm, and the length of the first air nozzle is 290-310 mm.
In one embodiment, the width of the air outlet of the second air nozzle is 445-455 mm, the thickness of the air outlet of the second air nozzle is 18-22 mm, and the length of the second air nozzle is 290-310 mm.
In one embodiment, the fan is a turbine fan with 25-35 kw.
In one embodiment, the main air pipe is a pipeline with DN 250 mm-DN 350 mm.
In one embodiment, the main air duct is a carbon steel welded duct.
In one embodiment, the branch air pipe is a carbon steel welded pipe.
In one embodiment, a manual butterfly valve is installed on the branch air pipe.
In one embodiment, the air nozzle forms an included angle of 45-90 degrees with the ground.
In one embodiment, the branch air pipe is connected with the air nozzle through a silica gel connecting pipe and a clamp.
Compared with the background technology, the technical scheme has the following advantages:
the utility model discloses a cooling air system that is used for hot patching to salvage glass small furnace bottom plate to collapse can carry out the cooling of blowing to the small furnace bottom plate independently, salvagees the in-process on line, does not influence the cooling of other production key processes, has guaranteed going on smoothly of production. And simultaneously, the utility model discloses can carry out blast cooling to the small furnace bottom plate pertinence, cooling efficiency is high.
Drawings
The present invention will be further explained with reference to the drawings and examples.
FIG. 1 is a schematic view of a float glass melting furnace and a cooling air system for hot patching and rush-repair of a glass small furnace bottom plate collapse in the embodiment of the utility model.
FIG. 2 is the utility model discloses a cooling air system's structure chart that is used for hot patching to salvage glass small furnace bottom plate to collapse.
Fig. 3 is a schematic view of a tuyere and a branch duct, in which (a) is a front view of a first tuyere, (b) is a side view of the first tuyere, (c) is a front view of a second tuyere, and (d) is a side view of the second tuyere.
FIG. 4 is a schematic view of the tuyere blowing cooling to the hearth plate.
Reference numerals:
the furnace comprises a small furnace 1, a regenerative chamber 2, a melting part 3, a clarification part 4, a neck 5, a cooling part 6, a small furnace bottom plate 11, a small furnace bottom plate collapse and repair area 12, a nozzle brick 13, a fan 71, a main air pipe 72, a branch air pipe 73, a red silica gel high-temperature connecting pipe 74, an air nozzle 75, a circular connector 76, an air outlet 77, a first air nozzle 751 and a second air nozzle 752.
Detailed Description
The following examples are intended to illustrate the invention:
in the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", "vertical", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the perspective views of the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in FIG. 1, a float glass melting furnace is a plan view, and the melting furnace includes a small furnace 1, a regenerator 2, a melting section 3, a refining section 4, a neck 5, a cooling section 6, and the like; there are usually two groups of regenerators 2 and small furnaces 1, symmetrically arranged on either side of the melting section 3. The number of the small furnaces 1 on each side is usually 4 to 10 depending on the scale of the amount of melting. The port 1 is connected with the regenerator 2 and the melting part 3, and the structure of the port usually comprises a port bottom plate 11, a port nozzle, a port slope arch and the like, and a nozzle brick 13 and a spacer brick are usually arranged at the port nozzle.
The collapse of the small furnace bottom plate and the repair area 12 are often positioned at the nozzle brick 13 and the contacted small furnace bottom plate 11, and in the process of online hot repair and first-aid repair, in order to ensure the cooling strength of arch slag, an L hanging wall and a pool wall, the small furnace bottom plate is not allowed to be cooled by induced air from the cooling air systems. Therefore, an independent cooling air system is additionally arranged to independently blow air to cool the bottom plate of the small furnace. Specifically, the method comprises the following steps:
referring to fig. 1 (indicated by a dotted line in fig. 1) and fig. 2, the cooling air system for hot-repair first-aid repair of glass small furnace bottom plate collapse according to the present embodiment includes:
a fan 71, a main air pipe 72 connected with the fan 71, and a plurality of branch air pipes 73 connected with the main air pipe 72; four branch air pipes 73 are correspondingly arranged on each small furnace 1, and the tail end of each branch air pipe 73 is provided with an air nozzle 75; the air nozzle 75 is a trapezoidal air nozzle, a round connector 76 is arranged at the joint of the air nozzle 75 and the branch air pipe 73, and an air outlet 77 of the air nozzle 75 is rectangular; the width of the air outlet 77 of the air nozzle 75 is larger than the diameter of the circular interface 76, and the thickness of the air outlet 77 of the air nozzle 75 is smaller than the diameter of the circular interface 76;
the tuyeres 75 are located below the corresponding port floor 11 with the tuyeres 75 facing the port floor 11, e.g., the tuyeres 75 are angled at 45-90 to the ground as shown in fig. 4. The air is blown by the fan 71 to blow and cool the small furnace bottom plate 11 through the main air duct 72, the branch air duct 73 and the air nozzles 75.
The design selection and the size basis of the conveying air pipeline are as follows:
a. the medium in the pipeline is air and has no corrosiveness, so the pipeline adopts a carbon steel welding pipe;
b. DN300 mm is selected as the main air pipe 72, and the calculation is as follows:
according to Table 1, when the air volume is 12450Nm3And when the flow velocity is/h, selecting the flow velocity of the main air pipe to be less than or equal to 17.5m, and neglecting factors such as the resistance of the curve and the like according to the maximum flow velocity.
Wind rate Q is wind speed U × sectional area of wind pipe S × 3600:
air duct cross-sectional area S is the passing air volume (m)3)/(3600X wind speed (m/s)
The calculation can obtain: the sectional area of the air duct is 12450/(3600 multiplied by 17.5) is 0.20m2
Therefore, the diameter d of the air duct is √ S/3.14 √ 0.25 m, i.e., DN 250 mm.
A large-size pipeline is selected after the pipeline resistance is considered, so a DN300 welding carbon steel pipe is selected.
TABLE 1 allowable flow rates in high-speed branched pipes
| Air volume (m)3/h) | Maximum allowable air volume (m/s) |
| 5000～10000 | 12.5 |
| 10000～17000 | 17.5 |
| 17000～25000 | 20.0 |
| 25000～40000 | 22.5 |
| 40000～70000 | 25.0 |
| 70000～100000 | 30.0 |
In this embodiment, a turbo fan 71 with a power of 30kw is respectively installed at the rear end walls of the regenerators 2 on the second floor and the left floor of the kiln head, a main air duct 72 is led out to the inside of the passage of the kiln head, the main air duct 72 is installed on the passage traveling platform near one side of each small furnace 1, and 4 branch air ducts 73 are manufactured and installed at the positions of the main air duct 72 corresponding to each small furnace 1. In order to control the air volume of the branch air duct more stably, the branch air duct 73 is provided with manual butterfly valves.
Fig. 3 is a schematic view of the branch ducts 73 and the blast nozzles 75, and different models of the blast nozzles 75 are used according to the width of the furnace 1. For example, the air nozzle 75 includes a smaller first air nozzle 751 and a larger second air nozzle 752. The width of the air outlet of the first air nozzle 751 is 270mm, the thickness of the air outlet of the first air nozzle 751 is 20mm, and the length of the first air nozzle 751 is 300 mm. The width of the air outlet of the second air nozzle 752 is 450mm, the thickness of the air outlet of the second air nozzle 752 is 20mm, and the length of the second air nozzle 752 is 300 mm.
In order to make the air nozzle 75 of the branch air pipe 73 have a proper angle, the red silica gel high-temperature connecting pipes 74 and 304 with handles are used for connecting the manual butterfly valve and the air nozzle 75.
The tuyere 75 is welded on the cross beam of the sitting gun rack at a certain angle, the tuyere 75 blows air towards the repaired position of the small furnace bottom plate 11 for cooling, as shown in figure 4, a red silica gel high-temperature connecting pipe 74 is used for connecting the branch air pipe 73 and the tuyere 75, and the red silica gel high-temperature connecting pipe 74 is locked by a clamp to prevent falling off.
The fan 71 should be monitored during operation: a low-pressure shutdown alarm of the fan is installed in the central control room, and once the fan is dispatched and alarmed, the fan goes to the site for treatment.
In this embodiment, two sets of small furnaces are respectively provided with one set of cooling air system, and the two sets of cooling air systems can independently operate or can jointly operate by sharing a fan.
The above description is only a preferred embodiment of the present invention, and therefore the scope of the present invention should not be limited by this description, and all equivalent changes and modifications made within the scope and the specification of the present invention should be covered by the present invention.
Claims (10)
1. The utility model provides a cooling air system that is used for hot patching to salvage glass small furnace bottom plate to collapse which characterized in that: the method comprises the following steps: the air conditioner comprises a fan, a main air pipe connected with the fan, and a plurality of branch air pipes connected with the main air pipe; 3-5 branch air pipes are correspondingly arranged on each small furnace, and the tail end of each branch air pipe is connected with an air nozzle; the air nozzles are positioned below the corresponding small furnace bottom plates and face the small furnace bottom plates; the air nozzle is a trapezoidal air nozzle, a round connector is arranged at the joint of the air nozzle and the branch air pipe, and an air outlet of the air nozzle is rectangular; the width of the air outlet of the air nozzle is larger than the diameter of the circular interface, and the thickness of the air outlet of the air nozzle is smaller than the diameter of the circular interface.
2. The cooling air system for hot-repair rush-repair glass small-furnace bottom plate collapse according to claim 1, characterized in that: the blast nozzle comprises a first blast nozzle and a second blast nozzle.
3. The cooling air system for hot-repair rush-repair glass small-furnace bottom plate collapse according to claim 2, characterized in that: the width of the air outlet of the first air nozzle is 265-275 mm, the thickness of the air outlet of the first air nozzle is 18-22 mm, and the length of the first air nozzle is 290-310 mm.
4. The cooling air system for hot-repair rush-repair glass small-furnace bottom plate collapse according to claim 2, characterized in that: the width of the air outlet of the second air nozzle is 445-455 mm, the thickness of the air outlet of the second air nozzle is 18-22 mm, and the length of the second air nozzle is 290-310 mm.
5. The cooling air system for hot-repair rush-repair glass small-furnace bottom plate collapse according to claim 1, characterized in that: the fan is a turbine fan of 25-35 kw.
6. The cooling air system for hot-repair rush-repair glass small-furnace bottom plate collapse according to claim 1, characterized in that: the main air pipe is a pipeline with the length of DN 250 mm-DN 350 mm.
7. The cooling air system for hot-repair rush-repair glass small-furnace bottom plate collapse according to claim 1, characterized in that: the main air pipe is a carbon steel welded pipe; the branch air pipe is a carbon steel welded pipe.
8. The cooling air system for hot-repair rush-repair glass small-furnace bottom plate collapse according to claim 1, characterized in that: and a manual butterfly valve is arranged on the branch air pipe.
9. The cooling air system for hot-repair rush-repair glass small-furnace bottom plate collapse according to claim 1, characterized in that: the air nozzle and the ground form an included angle of 45-90 degrees.
10. The cooling air system for hot-repair rush-repair glass small-furnace bottom plate collapse according to claim 1, characterized in that: the branch tuber pipe with connect through silica gel connecting pipe and clamp between the tuyere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023344424.XU CN214496086U (en) | 2020-12-31 | 2020-12-31 | Cooling air system for thermal repair first-aid repair glass small furnace bottom plate collapse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023344424.XU CN214496086U (en) | 2020-12-31 | 2020-12-31 | Cooling air system for thermal repair first-aid repair glass small furnace bottom plate collapse |
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| Publication Number | Publication Date |
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| CN214496086U true CN214496086U (en) | 2021-10-26 |
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| CN202023344424.XU Active CN214496086U (en) | 2020-12-31 | 2020-12-31 | Cooling air system for thermal repair first-aid repair glass small furnace bottom plate collapse |
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