CN213578762U - Gas-water composite spray cooling electric furnace cover and electric furnace - Google Patents
Gas-water composite spray cooling electric furnace cover and electric furnace Download PDFInfo
- Publication number
- CN213578762U CN213578762U CN202022683823.2U CN202022683823U CN213578762U CN 213578762 U CN213578762 U CN 213578762U CN 202022683823 U CN202022683823 U CN 202022683823U CN 213578762 U CN213578762 U CN 213578762U
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- electric furnace
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 130
- 238000001816 cooling Methods 0.000 title claims abstract description 54
- 239000002131 composite material Substances 0.000 title claims abstract description 42
- 239000007921 spray Substances 0.000 title claims abstract description 42
- 239000000498 cooling water Substances 0.000 claims abstract description 65
- 150000001875 compounds Chemical class 0.000 claims abstract description 20
- 239000000203 mixture Substances 0.000 claims abstract description 11
- 230000004308 accommodation Effects 0.000 claims abstract description 8
- 239000000779 smoke Substances 0.000 claims description 7
- 238000005507 spraying Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 4
- 230000008646 thermal stress Effects 0.000 abstract description 4
- 238000007789 sealing Methods 0.000 description 8
- 238000007599 discharging Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000009628 steelmaking Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
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- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
The utility model discloses a compound cooling electric stove bell and electric stove that sprays of air water, compound cooling electric stove bell that sprays of air water includes upper cover plate (1), apron (3) down, outer riser (7) and interior riser (8), form accommodation space between upper cover plate (1) and apron (3) down, be equipped with compressed air supply branch pipe (4) in this accommodation space, cooling water supply branch pipe (5) and compound nozzle of gas water (6), compound nozzle of gas water (6) are connected respectively with compressed air supply branch pipe (4) and cooling water supply branch pipe (5), compound nozzle of gas water (6) can spray air water mixture to apron (3), apron (3) are located between outer riser (7) and interior riser (8) down, the lower part of outer riser (7) is equipped with outlet (701). The furnace cover of the gas-water composite spray cooling electric furnace has the advantages of low cooling water pressure, small flow, low thermal stress, long service life of the furnace cover, convenience in maintenance and high safety.
Description
Technical Field
The utility model relates to a steelmaking equipment field, specific is a compound spray cooling electric stove bell of air water, still an electric stove that contains this compound spray cooling electric stove bell of air water.
Background
At present, in the electric furnace steelmaking process, a water-cooling coil structure is mostly adopted for the furnace cover of the air-water composite spray cooling electric furnace, and in the structure, the water-cooling coil bears the cooling water pressure of 0.6MPa and simultaneously bears high-temperature radiation from the inside of the furnace, so that the structure is relatively large in stress, the service life of the furnace cover is short, the cooling water pressure is high in flow rate, and the energy consumption is relatively large.
SUMMERY OF THE UTILITY MODEL
In order to improve the life of bell, the utility model provides a compound cooling electric stove bell and electric stove that sprays of air water, this compound cooling electric stove bell that sprays of air water has that cooling water pressure is low, the flow is little, the thermal stress is low, the bell is longe-lived, the maintenance is maintained the advantage that convenience, security are high.
The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a compound cooling electric stove bell that sprays of air water, including the upper cover plate, lower cover plate, outer riser and interior riser, the upper cover plate sets up and forms accommodation space with lower apron interval from top to bottom, be equipped with compressed air supply branch pipe in this accommodation space, cooling water supply branch pipe and the compound nozzle of air water, the compound nozzle of air water is connected respectively with compressed air supply branch pipe and cooling water supply branch pipe, the compound nozzle of air water can spray air water mixture to the lower cover plate, the lower part of outer riser is equipped with the outlet, interior riser is located the inboard of outer riser, the lower cover plate is located between outer riser and the interior riser.
The support is arranged between the upper cover plate and the lower cover plate, the compressed air supply branch pipe extends along the diameter direction of the furnace cover of the air-water composite spraying cooling electric furnace, the cooling water supply branch pipe also extends along the diameter direction of the furnace cover of the air-water composite spraying cooling electric furnace, and the compressed air supply branch pipes are connected with the cooling water supply branch pipes in a one-to-one correspondence manner.
A compressed air supply main pipe is arranged between the upper cover plate and the outer vertical plate, the compressed air supply main pipe is of a circular ring structure, and the compressed air supply branch pipes are communicated with the compressed air supply main pipe.
The upper cover plate and the lower cover plate are both conical structures, the upper cover plate is provided with an access hole and an access cover plate, and the outer end of the lower cover plate is provided with a water collecting tank.
A cooling water supply main pipe is arranged between the upper cover plate and the inner vertical plate, the cooling water supply main pipe is of a circular ring structure, and the cooling water supply branch pipes are communicated with the cooling water supply main pipe.
The cooling water supply main pipe is formed by sequentially connecting an inner vertical plate, an upper end ring, an outer sleeve and a lower end ring in a surrounding mode, the outer sleeve is sleeved outside the inner vertical plate, and the upper cover plate is connected with the outer sleeve in a sealing mode.
The furnace cover of the gas-water composite spray cooling electric furnace also comprises an upper end cover which comprises a circular plate section and an inner cylinder section which are connected up and down, the lower end of the inner cylinder section is hermetically connected with an upper end ring, and the inner cylinder section is provided with a smoke outlet.
The upper end cover is externally sleeved with an exhaust sleeve, an upper annular cavity is formed between the exhaust sleeve and the upper end cover, the exhaust sleeve comprises an annular section and an outer cylindrical section which are connected up and down, the annular section is connected with the upper end cover in a sealing mode, the outer cylindrical section is connected with the upper cover plate in a sealing mode, an upper exhaust hole is formed in the edge of the inner side of the upper cover plate, an air inlet through hole is formed in the inner cylindrical section, and air in the containing space can enter the inner cavity of the upper end cover through the upper exhaust hole, the upper annular cavity and the air inlet through.
The electric furnace comprises a return water supply system and the cover of the gas-water composite spray cooling electric furnace, wherein the return water supply system is connected with a water outlet and can supply cooling water into a cooling water supply branch pipe.
The backwater water supply system comprises a Venturi pump, a backwater tank and a cooling tower, a water outlet is connected with a suction inlet of the Venturi pump through a first drainage pipeline, a discharge port of the Venturi pump is connected with an inlet of the backwater tank through a second drainage pipeline, water in the backwater tank can enter an injection port of the Venturi pump, water in the backwater tank can also enter the cooling tower, and the cooling tower can supply cooling water into a cooling water supply branch pipe through a third drainage pipeline.
The utility model has the advantages that: the furnace cover of the gas-water composite spray cooling electric furnace has the advantages of low cooling water pressure, small flow, low thermal stress, long service life of the furnace cover, convenience in maintenance and high safety.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
FIG. 1 is an assembly schematic view of the furnace cover of the gas-water composite spray cooling electric furnace of the present invention.
Fig. 2 is a partially enlarged schematic view of fig. 1.
Fig. 3 is a sectional view taken along a-a in fig. 2.
FIG. 4 is a top view of the furnace cover of the gas-water composite spray cooling electric furnace.
Figure 5 is a schematic view of the electric stove of the present invention.
1. An upper cover plate; 2. a support; 3. a lower cover plate; 4. a compressed air supply branch pipe; 5. a cooling water supply branch pipe; 6. a gas-water composite nozzle; 7. an outer vertical plate; 8. an inner vertical plate; 9. a compressed air supply manifold; 10. a cooling water supply header pipe; 11. an upper end cover; 12. an exhaust sleeve; 13. a backwater water supply system; 14. a small central furnace cover; 15. a high temperature electrode; 16. a grip arm; 17. a furnace body;
101. overhauling the cover plate; 102. an upper vent hole;
301. a water collection tank;
701. a water outlet;
1001. an upper end ring; 1002. an outer sleeve; 1003. a lower end ring;
1101. a circular plate section; 1102. an inner cylindrical section; 1103. an air inlet through hole; 1104. a smoke outlet;
1201. a circular ring section; 1202. an outer cylindrical section;
1301. a venturi pump; 1302. returning to a water tank; 1303. a cooling tower; 1304. a first drain line; 1305. a second drain line; 1306. a third drain line; 1307. a fourth drain line; 1308. a fifth drain line;
13011. a suction inlet; 13012. an outlet port; 13013. and (4) injecting the liquid into the opening.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The utility model provides a compound cooling electric stove bell that sprays of air water, including upper cover plate 1, lower cover plate 3, outer riser 7 and interior riser 8, upper cover plate 1 sets up with lower cover plate 3 interval from top to bottom, form annular accommodation space between upper cover plate 1 and the lower cover plate 3, be equipped with compressed air supply branch pipe 4 in this accommodation space, cooling water supply branch pipe 5 and compound nozzle 6 of gas water, compound nozzle 6 of gas water is connected respectively with compressed air supply branch pipe 4 and cooling water supply branch pipe 5, compound nozzle 6 of gas water can spray air water mixture to lower cover plate 3, interior riser 8 is located the inboard of outer riser 7, lower cover plate 3 is located between outer riser 7 and interior riser 8, the lower part of outer riser 7 is equipped with outlet 701, as shown in fig. 1-4.
Compressed air in the compressed air supply branch pipe 4 and cooling water in the cooling water supply branch pipe 5 can be sprayed out from the air-water composite nozzle 6, an air-water mixture sprayed out from the air-water composite nozzle 6 can cool the lower cover plate 3, and the pressure in the accommodating space is the same as the external atmospheric pressure. The furnace cover of the gas-water composite spray cooling electric furnace has the advantages of low cooling water pressure, small flow, low thermal stress, long service life of the furnace cover, convenience in maintenance and high safety.
In this embodiment, upper cover plate 1 and lower cover plate 3 all are conical structure, and outer riser 7 and interior riser 8 are the cylindrical structure, and the axis of outer riser 7, the axis of interior riser 8, the axis of upper cover plate 1 and the coincidence of the axis of lower cover plate 3 are equipped with many supports 2 between upper cover plate 1 and the lower cover plate 3, and support 2 can adopt H shaped steel, and the extending direction of H shaped steel is the same with the diameter direction of lower cover plate 3, and support 2 will the accommodation space separates and forms a plurality of fan-shaped spaces, as shown in fig. 1-3.
In this embodiment, the compressed air supply branch pipes 4 extend along the diameter direction of the furnace cover of the air-water composite spray cooling electric furnace, the cooling water supply branch pipes 5 also extend along the diameter direction of the furnace cover of the air-water composite spray cooling electric furnace, and the compressed air supply branch pipes 4 are connected with the cooling water supply branch pipes 5 in a one-to-one correspondence manner. A plurality of air-water composite nozzles 6 are arranged on one compressed air supply branch pipe 4 and one cooling water supply branch pipe 5, the air-water composite nozzles 6 can spray air-water mixtures to the lower cover plate 3, and the air-water composite nozzles 6 can also spray air-water mixtures to the outer vertical plate 7 and the inner vertical plate 8, as shown in fig. 2.
In this embodiment, a compressed air supply header pipe 9 is disposed between the upper cover plate 1 and the outer vertical plate 7, the compressed air supply header pipe 9 is a circular structure, the compressed air supply header pipe 9 is sleeved outside the upper cover plate 1, the upper end of the upper cover plate 1 is fixedly connected to the compressed air supply header pipe 9 in a sealing manner, the outer edge of the outer vertical plate 7 is fixedly connected to the compressed air supply header pipe 9 in a sealing manner, and the compressed air supply branch pipe 4 is communicated with the compressed air supply header pipe 9. A compressed air supply line or a compressed air source is connected to the outside of the compressed air supply manifold 9.
In this embodiment, be equipped with a plurality of manholes and a plurality of access panel 101 on upper cover plate 1, a plurality of access panel 101 are along the even interval arrangement of circumference of upper cover plate 1, the manhole is connected with access panel 101 one-to-one, sets up the manhole can conveniently be overhauled with access panel 101. The outer end of the lower cover plate 3 is provided with a water collecting tank 301, and water in the gas-water mixture sprayed by the gas-water composite nozzle 6 is collected in the water collecting tank 301 and then discharged from a water outlet 701.
In this embodiment, a cooling water supply main pipe 10 is disposed between the upper cover plate 1 and the inner vertical plate 8, the cooling water supply main pipe 10 is sleeved on the inner side of the upper cover plate 1, the cooling water supply main pipe 10 is in a circular ring structure, the axis of the upper cover plate 1, the axis of the compressed air supply main pipe 9 and the axis of the cooling water supply main pipe 10 are coincident, and the cooling water supply branch pipes 5 are communicated with the cooling water supply main pipe 10, as shown in fig. 2.
In this embodiment, the cooling water supply header 10 is formed by sequentially and hermetically connecting an inner vertical plate 8, an upper end ring 1001, an outer sleeve 1002 and a lower end ring 1003, the upper end ring 1001 and the lower end ring 1003 are arranged at an interval from top to bottom, the outer sleeve 1002 is sleeved outside the inner vertical plate 8, and the upper cover plate 1 is hermetically connected with the outer sleeve 1002. The axis of the inner vertical plate 8, the axis of the upper end ring 1001, the axis of the outer sleeve 1002 and the axis of the lower end ring 1003 are coincident.
In this embodiment, the furnace cover of the gas-water composite spray cooling electric furnace further comprises an upper end cover 11 which comprises a circular plate section 1101 and an inner cylinder section 1102 which are connected up and down, the axis of the upper end cover 11 coincides with the axis of the inner vertical plate 8, the lower end of the inner cylinder section 1102 is fixedly connected with the edge of the upper end ring 1001 in a sealing manner, a smoke outlet 1104 is arranged on the inner cylinder section 1102, and a smoke exhaust pipeline is connected outside the smoke outlet 1104.
In this embodiment, an exhaust sleeve 12 is sleeved outside the upper end cover 11, an upper annular cavity is formed between the exhaust sleeve 12 and the upper end cover 11, the exhaust sleeve 12 includes an annular section 1201 and an outer cylindrical section 1202 which are connected up and down, the annular section 1201 is connected with the upper end cover 11 in a sealing manner, the outer cylindrical section 1202 is connected with the upper cover plate 1 in a sealing manner, an upper exhaust hole 102 is formed in the inner side edge of the upper cover plate 1, an air inlet through hole 1103 is formed in the inner cylindrical section 1102, air in the accommodating space can enter the inner cavity of the upper end cover 11 through the upper exhaust hole 102, the upper annular cavity and the air inlet through hole 1103 in sequence, and air in the inner cavity of the upper end cover 11 can enter the smoke exhaust pipeline through.
In this embodiment, the gas-water composite spray cooling electric furnace cover further includes a central small furnace cover 14, a high temperature electrode 15 and a holding arm 16, the central small furnace cover 14 is formed by casting a high-alumina refractory material, the central small furnace cover 14 is sleeved in the inner vertical plate 8, the central small furnace cover 14 is hermetically connected with the inner vertical plate 8, the high temperature electrode 15 passes through the upper end cover 11 and the central small furnace cover 14, the high temperature electrode 15 is in clearance fit with the central small furnace cover 14, flue gas in the electric furnace can enter an inner cavity of the upper end cover 11, and the holding arm 16 is located on the upper cover plate 1, as shown in fig. 1 and 4.
An electric furnace is described below, which comprises a backwater water supply system 13, a furnace body 17 and the above-mentioned gas-water composite spray cooling electric furnace cover, the gas-water composite spray cooling electric furnace cover is connected to the furnace body 17 from above and below, the backwater water supply system 13 is connected to a water outlet 701, water in a gas-water mixture sprayed from the gas-water composite nozzle 6 can enter the backwater water supply system 13, and the backwater water supply system 13 can supply cooling water into the cooling water supply branch pipe 5, as shown in fig. 5.
In this embodiment, the return water supply system 13 includes a venturi pump 1301, a return water tank 1302, and a cooling tower 1303, the drain port 701 is connected to the suction port 13011 of the venturi pump 1301 through a first drain line 1304, the drain port 13012 of the venturi pump 1301 is connected to the inlet of the return water tank 1302 through a second drain line 1305, water in the return water tank 1302 can enter the inlet port 13013 of the venturi pump 1301, water in the return water tank 1302 can also enter the cooling tower 1303, and the cooling tower 1303 can supply cooling water into the cooling water supply branch pipe 5 through a third drain line 1306.
An injection port 13013 of the venturi pump 1301 is connected with an inlet of the cooling tower 1303 through a fourth drain line 1307, a water return valve is arranged on the fourth drain line 1307, an outlet of the water return tank 1302 is connected with the fourth drain line 1307 through a fifth drain line 1308, water feed pumps are arranged on the third drain line 1306 and the fifth drain line 1308, and the third drain line 1306 is communicated with the cooling water supply main 10. The high-temperature cooling water discharged from the furnace cover of the gas-water composite spray cooling electric furnace firstly enters the water return tank 1302, then the high-temperature cooling water enters the cooling tower 1303 to be cooled into low-temperature water, and the low-temperature water enters the cooling water supply main pipe 10 again to circulate.
The furnace cover of the gas-water composite spray cooling electric furnace and the working process of the electric furnace are described below.
Compressed air in a compressed air supply main pipe 9 enters a compressed air supply branch pipe 4, cooling water in a cooling water supply main pipe 10 enters a cooling water supply branch pipe 5, the compressed air in the compressed air supply branch pipe 4 and the cooling water in the cooling water supply branch pipe 5 are sprayed out from an air-water composite nozzle 6, water in an air-water mixture sprayed out from the air-water composite nozzle 6 is collected in a water collecting tank 301 and is discharged from a water discharging port 701, and air in the air-water mixture sprayed out from the air-water composite nozzle 6 sequentially passes through an upper air discharging hole 102, an upper annular cavity, an air inlet through hole 1103 and an inner cavity of an upper end cover 11 and then is discharged from an air discharging port 1104 and enters an air discharging pipeline, as shown in fig. 1 and fig..
The non-pressure high-temperature cooling water discharged from the water outlet 701 can enter the water return tank 1302 after passing through the venturi pump 1301, the venturi pump 1301 takes the pressurized return water (0.3MPa) as a drainage medium to form a vacuum state in a pipe, the sprayed non-pressure water can be guided to enter the water return tank 1302, the non-pressure water entering the water return tank 1302 is pressurized by the water return pump communicated with the water return tank 1302, a small part of the non-pressure water is supplied to the venturi pump 1301 as the drainage medium, the large part of the non-pressure water returns to the cooling tower 1303 to be cooled, and the cooled cooling water is pressurized to 0.3MPa by the water feed pump and is supplied to the furnace cover again for use, as shown in fig. 5.
For convenience of understanding and description, the present invention is described by combining absolute positional relationships, wherein the term "upper" indicates an upper direction in fig. 2, and the term "lower" indicates a lower direction in fig. 2. The present invention is described by using the observation angle of the reader, but the above-mentioned orientation words can not be understood or interpreted as the limitation of the protection scope of the present invention.
The above description is only for the specific embodiments of the present invention, and the scope of the present invention can not be limited by the embodiments, so that the replacement of the equivalent components or the equivalent changes and modifications made according to the protection scope of the present invention should still belong to the scope covered by the present patent. In addition, the utility model provides an between technical feature and the technical feature, between technical feature and technical scheme, technical scheme and the technical scheme all can the independent assortment use.
Claims (10)
1. The furnace cover of the gas-water composite spray cooling electric furnace is characterized by comprising an upper cover plate (1), a lower cover plate (3), an outer vertical plate (7) and an inner vertical plate (8), wherein the upper cover plate (1) and the lower cover plate (3) are arranged at intervals up and down to form a containing space, be equipped with compressed air supply branch pipe (4) in this accommodation space, cooling water supply branch pipe (5) and the compound nozzle of air water (6), the compound nozzle of air water (6) is connected respectively with compressed air supply branch pipe (4) and cooling water supply branch pipe (5), the compound nozzle of air water (6) can spray air water mixture to apron (3), the lower part of outer riser (7) is equipped with outlet (701), interior riser (8) are located the inboard of outer riser (7), lower apron (3) are located between outer riser (7) and interior riser (8).
2. The furnace cover of the air-water composite spray cooling electric furnace according to claim 1, wherein a support (2) is arranged between the upper cover plate (1) and the lower cover plate (3), a compressed air supply branch pipe (4) extends along the diameter direction of the furnace cover of the air-water composite spray cooling electric furnace, a cooling water supply branch pipe (5) also extends along the diameter direction of the furnace cover of the air-water composite spray cooling electric furnace, and the compressed air supply branch pipes (4) are connected with the cooling water supply branch pipes (5) in a one-to-one correspondence manner.
3. The furnace cover of the air-water composite spray cooling electric furnace according to claim 1, characterized in that a compressed air supply main pipe (9) is arranged between the upper cover plate (1) and the outer vertical plate (7), the compressed air supply main pipe (9) is in a circular structure, and the compressed air supply branch pipes (4) are communicated with the compressed air supply main pipe (9).
4. The furnace cover of the air-water composite spray cooling electric furnace according to claim 1, characterized in that the upper cover plate (1) and the lower cover plate (3) are both in a conical structure, the upper cover plate (1) is provided with an access hole and an access cover plate (101), and the outer end of the lower cover plate (3) is provided with a water collecting tank (301).
5. The furnace cover of the gas-water composite spray cooling electric furnace according to claim 1, characterized in that a cooling water supply main pipe (10) is arranged between the upper cover plate (1) and the inner vertical plate (8), the cooling water supply main pipe (10) is in a circular structure, and the cooling water supply branch pipes (5) are communicated with the cooling water supply main pipe (10).
6. The furnace cover of the air-water composite spraying cooling electric furnace according to claim 5, characterized in that the cooling water supply main pipe (10) is formed by sequentially connecting an inner vertical plate (8), an upper end ring (1001), an outer sleeve (1002) and a lower end ring (1003), the outer sleeve (1002) is sleeved outside the inner vertical plate (8), and the upper cover plate (1) is hermetically connected with the outer sleeve (1002).
7. The gas-water composite spray cooling electric furnace cover according to claim 6, further comprising an upper end cover (11) comprising a circular plate section (1101) and an inner cylinder section (1102) which are connected up and down, wherein the lower end of the inner cylinder section (1102) is hermetically connected with the upper end ring (1001), and the inner cylinder section (1102) is provided with a smoke outlet (1104).
8. The furnace cover of the electric furnace with air-water composite spray cooling according to claim 7 is characterized in that an exhaust sleeve (12) is sleeved outside an upper end cover (11), an upper annular cavity is formed between the exhaust sleeve (12) and the upper end cover (11), the exhaust sleeve (12) comprises an annular section (1201) and an outer cylindrical section (1202) which are connected up and down, the annular section (1201) is hermetically connected with the upper end cover (11), the outer cylindrical section (1202) is hermetically connected with an upper cover plate (1), an upper exhaust hole (102) is formed in the inner side edge of the upper cover plate (1), an air inlet through hole (1103) is formed in the inner cylindrical section (1102), and air in the accommodating space can sequentially pass through the upper exhaust hole (102), the upper annular cavity and the air inlet through hole (1103) to enter the inner cavity of the upper end cover (11).
9. An electric furnace, characterized in that the electric furnace comprises a return water supply system (13) and the furnace cover of the gas-water composite spray cooling electric furnace of claim 1, the return water supply system (13) is connected with a water outlet (701), and the return water supply system (13) can supply cooling water into a cooling water supply branch pipe (5).
10. The electric furnace according to claim 9, characterized in that the backwater supply system (13) comprises a venturi pump (1301), a backwater tank (1302) and a cooling tower (1303), the drain outlet (701) is connected to the suction inlet (13011) of the venturi pump (1301) through a first drain line (1304), the drain outlet (13012) of the venturi pump (1301) is connected to the inlet of the backwater tank (1302) through a second drain line (1305), water in the backwater tank (1302) can enter the inlet (13013) of the venturi pump (1301), water in the backwater tank (1302) can also enter the cooling tower (1303), and the cooling tower (1303) can supply cooling water into the cooling water supply branch pipe (5) through a third drain line (1306).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022683823.2U CN213578762U (en) | 2020-11-19 | 2020-11-19 | Gas-water composite spray cooling electric furnace cover and electric furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022683823.2U CN213578762U (en) | 2020-11-19 | 2020-11-19 | Gas-water composite spray cooling electric furnace cover and electric furnace |
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| CN213578762U true CN213578762U (en) | 2021-06-29 |
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| CN202022683823.2U Active CN213578762U (en) | 2020-11-19 | 2020-11-19 | Gas-water composite spray cooling electric furnace cover and electric furnace |
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