CN212577492U - Heating and drainage tool for tundish nozzle channel - Google Patents
Heating and drainage tool for tundish nozzle channel Download PDFInfo
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- CN212577492U CN212577492U CN202020939105.4U CN202020939105U CN212577492U CN 212577492 U CN212577492 U CN 212577492U CN 202020939105 U CN202020939105 U CN 202020939105U CN 212577492 U CN212577492 U CN 212577492U
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- ventilation pipe
- drainage
- connecting plate
- tundish nozzle
- pipe
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 11
- 238000009423 ventilation Methods 0.000 claims abstract description 52
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 13
- 239000010959 steel Substances 0.000 claims abstract description 13
- 230000000694 effects Effects 0.000 abstract description 5
- 239000007921 spray Substances 0.000 abstract description 3
- 206010010904 Convulsion Diseases 0.000 abstract description 2
- 230000036461 convulsion Effects 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000005266 casting Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000009749 continuous casting Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
A heating and drainage tool for a tundish nozzle channel comprises a drainage connecting plate, a drainage device and a ventilation pipe, wherein one end of the ventilation pipe is fixedly connected with the drainage connecting plate, the drainage device is a right-angle elbow, one right-angle side is arranged in the ventilation pipe, the other right-angle side extends out of the side wall of the ventilation pipe, the drainage connecting plate is arranged on the tundish nozzle connecting plate, and the ventilation pipe is communicated with the tundish nozzle channel; the right-angle side pipe of the flow diverter in the vent pipe is a Laval nozzle; the lower part of the ventilation pipe is provided with a plurality of noise reduction holes. The utility model has the advantages that: 1) the drainage device adopts the form of Laval spray tube, changes the velocity of flow of compressed gas in the drainage device, makes it form bigger negative pressure in the export district, improves the convulsions effect in the ventilation pipe, can draw the inside thermal current of package from the mouth of a river passageway fast. 2) The utility model discloses the hole of making an uproar and white steel wall net fall that set up bottom the ventilation pipe can reduce the velocity of flow of gas in the ventilation pipe bottom, eliminates the noise that high velocity air brought.
Description
Technical Field
The utility model relates to a production technology of tundish in continuous casting, in particular to a heating and drainage tool for a tundish nozzle channel.
Background
The continuous casting tundish roaster is divided into direct-fired roasting and regenerative roasting, and with the promotion of energy-saving and consumption-reducing measures in our factory, the direct-fired roasting is changed into regenerative roasting in four tundish roasters of two large continuous casting machines in the end of 2018. The difference between the two baking modes is that the direct-fired baking belongs to open baking, all baking guns are ignited and heated, flame is rebounded to the periphery of the ladle wall after striking the bottom of the tundish, and then is discharged from the water gap channel and the ladle cover vent hole, and the baking heat value is low, and the energy waste is large. The heat accumulating type baking belongs to closed baking, the whole tundish is closed during baking, the four baking guns burn alternately every two at intervals of 15 seconds, and the gas and air mesons are heated in the burner heat accumulator, so that the combustion heat value of the mesons is fully improved. The baking mode has low energy consumption, but the heating of the nozzle channel at the bottom of the tundish has great influence, cold steel is solidified in the channel after casting, the liquid level fluctuation of the crystallizer at the initial casting stage is large, the casting blank quality is influenced, and even the production accident that the casting fails due to the serious aggregation of the cold steel in the nozzle channel occurs.
Patent document with publication number CN205057027U discloses a "tundish baking air draft device", which can play a role in draining a tundish bottom water gap channel and increase the baking temperature of the tundish water gap channel. However, in practical application, it is found that the airflow jetted from the ventilation pipe at a high speed in the process of drawing out the gas causes great noise, and the working environment is seriously affected.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a well mouth of a river passageway heating drainage instrument can effectively improve well mouth of a river passageway inner wall temperature, avoids opening the quality and the production accident that the interior cold steel gathering of initial stage mouth of a river passageway leads to but noise reduction improves operational environment.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a heating and drainage tool for a tundish nozzle channel comprises a drainage connecting plate, a drainage device and a ventilation pipe, wherein one end of the ventilation pipe is fixedly connected with the drainage connecting plate, the drainage device is a right-angle elbow, one right-angle edge is arranged in the ventilation pipe, the other right-angle edge extends out of the side wall of the ventilation pipe, the drainage connecting plate is arranged on the tundish nozzle connecting plate, and the ventilation pipe is communicated with the tundish nozzle channel; the right-angle side pipe of the drainage device in the ventilation pipe is a Laval nozzle; the lower part of the ventilation pipe is provided with a plurality of noise reduction holes, and the bottom end of the inner wall of the ventilation pipe is also provided with a white steel wall net.
The number of the noise reduction holes is 8-12, the noise reduction holes are arranged in an upper row and a lower row, and the distance between the lower row of the noise reduction holes and the tail end of the ventilation pipe is 120 mm and 150 mm.
The tundish nozzle connecting plate is provided with a chute matched with the drainage connecting plate, and the drainage connecting plate is inserted and embedded in the chute.
Compared with the prior art, the beneficial effects of the utility model are that:
1) the utility model discloses a form that the drainage ware adopted the laval spray tube changes the velocity of flow of compressed gas in the drainage ware, makes it form bigger negative pressure in the export district, improves the convulsions effect in the ventilation duct, can draw forth the inside thermal current of well package in the mouth of a river passageway fast.
2) The utility model discloses the hole of making an uproar and white steel wall net fall that set up bottom the ventilation pipe can reduce the velocity of flow of gas in the ventilation pipe bottom, eliminates the noise that high velocity air brought.
Drawings
Fig. 1 is a schematic diagram of the single structure of the present invention.
Fig. 2 is a schematic view of the present invention.
In the figure: the method comprises the following steps of 1-drainage connecting plate, 2-ventilation pipe, 3-drainage device, 4-tundish nozzle connecting plate, 5-Laval nozzle, 6-noise reduction hole and 7-white steel wall net.
Detailed Description
The following further describes the embodiments of the present invention:
referring to fig. 1-2, a heating and drainage tool for a tundish nozzle passage comprises a drainage connecting plate 1, a drainage device 3 and a ventilation pipe 2, wherein one end of the ventilation pipe 2 is fixedly connected with the drainage connecting plate 1, the drainage device 3 is a right-angle elbow, one right-angle side is arranged in the ventilation pipe 2, the other right-angle side extends out of the side wall of the ventilation pipe 2, the drainage connecting plate 1 is installed on a tundish nozzle connecting plate 4, and the ventilation pipe 2 is communicated with the tundish nozzle passage; the right-angle side pipe of the drainage device 3 in the ventilation pipe 2 is a Laval nozzle 5; and a plurality of noise reduction holes 6 are formed in the lower part of the ventilation pipe 2.
The number of the noise reduction holes 6 is 8-12, the noise reduction holes are arranged in an upper row and a lower row, and the distance between the lower row of the noise reduction holes 6 and the tail end of the ventilation pipe 2 is 120 mm and 150 mm.
The tundish nozzle connecting plate 4 is provided with a sliding groove matched with the drainage connecting plate 1, and the drainage connecting plate 1 is inserted and embedded in the sliding groove.
And a white steel wall net 7 is also arranged at the bottom end of the inner wall of the ventilation pipe 2.
In order to ensure that the ventilation pipe 2 can resist the scouring corrosion of high-temperature airflow, the ventilation pipe is made of a white steel pipe; in order to eliminate the noise generated by the high-speed airflow in the channel, two rows of noise reduction holes 6 are drilled at the position 120-150mm away from the tail end of the ventilation pipe 2, 4-6 noise reduction holes 6 are uniformly distributed in each row along the circumferential direction, the gas flow speed at the outlet of the ventilation pipe 2 can be reduced, meanwhile, a white steel wall net 7 is further arranged at the bottom end of the inner wall of the ventilation pipe 2, the effects of sound absorption and noise reduction are achieved, and the noise caused by the high-speed airflow can be effectively eliminated.
In order to realize that the heat flow at the bottom of the tundish can be led into the water gap channel from the bottom of the tundish, the shape of the flow diverter 3 adopts the shape of the Laval nozzle 5, so that the flow rate of compressed gas in the flow diverter 3 is changed, higher negative pressure is formed in an outlet area, the air draft effect in the ventilation pipe 3 is improved, and the heat flow in the tundish can be quickly led out from the water gap channel.
Before the well package toasts, push drainage connecting plate 1 along well package mechanical chute to well package mouth of a river connecting plate 4 in, then connect compressed air and 3 articulate of drainage ware, well package toasts when remaining last 30 minutes, open compressed air, compressed air forms high-speed negative pressure zone in the export of Laval spray tube 5 like this, the internal thermal current of well package just draws out along mouth of a river passageway, discharge the thermal current in the export of ventilation pipe 2, constantly heat the interior mouth of a river passageway inner wall of well package of continuous thermal current of drawing out, finally reach predetermined inner wall temperature, thereby avoid opening quality and the production accident that the interior cold steel gathering of initial stage mouth of a river passageway leads to. The hole 6 of making an uproar that falls of setting in ventilation pipe 2 exit can reduce the gas velocity of flow in ventilation pipe 2 exit, still is equipped with white steel wall net 7 in the bottom of ventilation pipe 2 inner wall simultaneously, plays the effect of inhaling the sound and falling the noise, can effectively eliminate the noise in ventilation pipe 2 exit like this.
Claims (3)
1. A heating and drainage tool for a tundish nozzle channel comprises a drainage connecting plate, a drainage device and a ventilation pipe, wherein one end of the ventilation pipe is fixedly connected with the drainage connecting plate, the drainage device is a right-angle elbow, one right-angle edge is arranged in the ventilation pipe, the other right-angle edge extends out of the side wall of the ventilation pipe, the drainage connecting plate is arranged on the tundish nozzle connecting plate, and the ventilation pipe is communicated with the tundish nozzle channel; the drainage device is characterized in that a right-angle side pipe of the drainage device in the ventilation pipe is a Laval nozzle; the lower part of the ventilation pipe is provided with a plurality of noise reduction holes, and the bottom end of the inner wall of the ventilation pipe is also provided with a white steel wall net.
2. The heating and drainage tool for the tundish nozzle channel according to claim 1, wherein the number of the noise reduction holes is 8-12, the noise reduction holes are arranged in an upper row and a lower row, and the distance between the lower row of the noise reduction holes and the tail end of the ventilation pipe is 120-150 mm.
3. The heating and drainage tool for the tundish nozzle channel according to claim 1, wherein a chute matched with the drainage connecting plate is arranged on the tundish nozzle connecting plate, and the drainage connecting plate is inserted and embedded in the chute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020939105.4U CN212577492U (en) | 2020-05-29 | 2020-05-29 | Heating and drainage tool for tundish nozzle channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020939105.4U CN212577492U (en) | 2020-05-29 | 2020-05-29 | Heating and drainage tool for tundish nozzle channel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212577492U true CN212577492U (en) | 2021-02-23 |
Family
ID=74642272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020939105.4U Active CN212577492U (en) | 2020-05-29 | 2020-05-29 | Heating and drainage tool for tundish nozzle channel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212577492U (en) |
-
2020
- 2020-05-29 CN CN202020939105.4U patent/CN212577492U/en active Active
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