CN214300290U - Gas protection device in electroslag remelting refining process - Google Patents
Gas protection device in electroslag remelting refining process Download PDFInfo
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- CN214300290U CN214300290U CN202120362394.0U CN202120362394U CN214300290U CN 214300290 U CN214300290 U CN 214300290U CN 202120362394 U CN202120362394 U CN 202120362394U CN 214300290 U CN214300290 U CN 214300290U
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Abstract
The utility model discloses a gas protection device in electroslag remelting refining process, including the refining furnace body, the top sealing connection of refining furnace body has the bell, the cavity has been seted up at the upside middle part of bell, the top port thread seal of cavity has the closing cap, the middle part of closing cap is fixed nested has the intake pipe, the inlet port has been seted up to the downside middle part equidistant of bell, the outside of refining furnace body is equipped with the shell, the inside of shell is fixed nested has the inner shell, be equipped with the gas flow chamber between shell and the inner shell, the venthole has been seted up on the left side upper portion of inner shell. The utility model discloses a gas in the refining furnace body is extracted to the vacuum pump for be in negative pressure state in the refining furnace body, can discharge the interior oxygen-containing gas of refining furnace fast, the inert gas input refining furnace body in the rethread air extractor extraction gas holder is internal, makes inert gas can fill fast at the refining furnace body, and is efficient, has improved the gas protection effect.
Description
Technical Field
The utility model relates to an electroslag refining field, concretely relates to gas protection device in the refining process of electroslag remelting.
Background
Electroslag smelting is a fire refining method in which electric energy is converted into heat energy by passing electric current through electroslag serving as a resistor to melt metal or alloy. Electroslag smelting is another special process for smelting and casting non-ferrous metals and their alloys, and is to re-cast ingots produced by a common smelting and casting method. Therefore, it is also called electroslag remelting. Electroslag smelting can obtain ingots with better quality than common smelting, so the electroslag smelting is used for producing alloys with higher requirements.
At present, the existing electroslag remelting gas protection device extrudes oxygen-containing gas out of a refining furnace body by inputting inert gas into the refining furnace body and extruding the oxygen-containing gas in the refining furnace body through the inert gas, so that the efficiency is low, and the inert gas is easy to be mixed with the oxygen-containing gas and discharged together.
Therefore, it is necessary to invent a gas protection device in the electroslag remelting refining process to solve the above problems.
Disclosure of Invention
The utility model aims to provide a gas protection device in the electroslag remelting refining process, which extracts gas in a refining furnace body through a vacuum machine, so that the interior of the refining furnace body is in a negative pressure state, oxygen-containing gas in the refining furnace body can be rapidly discharged, inert gas in the gas storage tank is pumped by the air pump and is input into the refining furnace body, so that the inert gas can be rapidly filled in the refining furnace body, the efficiency is high, the gas protection effect is improved, and a gas flow cavity is arranged between the outer shell and the inner shell of the refining furnace body, when oxygen-containing hot gas is discharged out of the refining furnace body, the temperature is raised and preserved through the inner shell of the gas flow cavity, the consumption of heat energy is reduced, the electroslag remelting refining effect is improved, and the heated inert gas enters the gas flow cavity, so that the temperature of the inner shell can be further raised and maintained, the electroslag remelting refining effect is improved, and the defects in the technology are overcome.
In order to achieve the above object, the present invention provides the following technical solutions: a gas protection device in an electroslag remelting refining process comprises a refining furnace body, wherein the top of the refining furnace body is hermetically connected with a furnace cover, a cavity is formed in the middle of the upper side of the furnace cover, a sealing cover is arranged at the top port of the cavity in a threaded sealing manner, an air inlet pipe is fixedly nested in the middle of the sealing cover, the lower end of the air inlet pipe is communicated with the cavity, air inlet holes are formed in the middle of the lower side of the furnace cover at equal intervals and communicated with the cavity, an outer shell is arranged on the outer side of the refining furnace body, an inner shell is fixedly nested in the outer shell, a gas flow cavity is formed between the outer shell and the inner shell, an air outlet hole is formed in the upper portion of the left side of the inner shell, a protective cover is installed on the upper portion of the left side of the inner shell, corresponding to the position of the air outlet hole, a first filter screen is installed at the bottom port of the protective cover, and an exhaust pipe is installed on the upper portion of the right side of the outer shell, the exhaust pipe is communicated with the gas flow cavity, one end of the exhaust pipe, which is far away from the shell, is connected with a filter cartridge, a support plate is installed on the right side of the refining furnace body, a vacuum machine is installed on the support plate, the input end of the vacuum machine is connected with the lower end of the filter cartridge, a second filter screen is installed inside the filter cartridge, a third filter screen is arranged below the second filter screen, a support column is arranged on the right side of the refining furnace body, a top plate is fixed on the right side of the top of the support column, an air pump is installed on the top plate, the output end of the air pump is connected with a metal hose, one end of the metal hose, which is far away from the air pump, is connected with an air inlet pipe, hydraulic cylinders are installed on the left part and the right part of the top plate, the telescopic end of the hydraulic cylinders is connected with a furnace cover, a bottom plate is fixed on the bottom of the support column, an air storage tank is installed on the bottom plate, and the upper end of the air storage tank is connected with an air outlet pipe, the upper end of the air outlet pipe is connected with an air delivery pipe, and the upper end of the air delivery pipe is connected with the input end of the air extractor.
Preferably, a first high-temperature-resistant sealing gasket is arranged at the joint of the furnace cover and the refining furnace body, and a second high-temperature-resistant sealing gasket is arranged at the joint of the sealing cover and the furnace cover.
Preferably, handles are fixed on two sides of the top of the sealing cover.
Preferably, the bottom of the gas flow cavity is provided with a supporting block, the lower side of the supporting block is connected with the inner wall of the bottom of the outer shell, and the upper side of the supporting block is connected with the outer side of the bottom of the inner shell.
Preferably, an exhaust valve is mounted on the exhaust pipe.
Preferably, the mesh diameter of the second filter is smaller than the mesh diameter of the first filter, and the mesh diameter of the third filter is smaller than the mesh diameter of the second filter.
Preferably, the air outlet pipe is provided with an air outlet valve.
In the technical scheme, the utility model provides a technological effect and advantage:
gas in the refining furnace body is extracted through the vacuum pump, so that the refining furnace body is in a negative pressure state, oxygen-containing gas in the refining furnace body can be discharged quickly, inert gas in the gas storage tank is extracted through the gas extractor and is input into the refining furnace body, the inert gas can be filled in the refining furnace body quickly, the efficiency is high, the gas protection effect is improved, a gas flow cavity is formed between an outer shell and an inner shell of the refining furnace body, when oxygen-containing hot gas is discharged out of the refining furnace body, the temperature is increased and maintained through the inner shell of the gas flow cavity, the consumption of heat energy is reduced, the electroslag remelting refining effect is improved, the heated inert gas enters the gas flow cavity, the temperature can be further increased and maintained on the inner shell, and the electroslag remelting refining effect is improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to these drawings.
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a front view of the present invention;
FIG. 3 is a cross-sectional view of the refining furnace body of the present invention;
fig. 4 is a cross-sectional view of the furnace lid of the present invention;
fig. 5 is a cross-sectional view of the filter cartridge of the present invention.
Description of reference numerals:
1 refining furnace body, 2 furnace covers, 3 cavities, 4 sealing covers, 5 air inlet pipes, 6 air inlet holes, 7 outer shells, 8 inner shells, 9 air flow cavities, 10 air outlet holes, 11 protective covers, 12 first filter screens, 13 air outlet pipes, 14 filter cartridges, 15 supporting plates, 16 vacuum machines, 17 second filter screens, 18 third filter screens, 19 supporting columns, 20 top plates, 21 air extractors, 22 metal hoses, 23 hydraulic cylinders, 24 bottom plates, 25 air storage tanks, 26 air outlet pipes, 27 air conveying pipes, 28 first high-temperature-resistant sealing gaskets, 29 second high-temperature-resistant sealing gaskets, 30 handles, 31 supporting blocks and 32 exhaust valves.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.
The utility model provides a gas protection device in electroslag remelting refining process as shown in figures 1-5, which comprises a refining furnace body 1, wherein the top of the refining furnace body 1 is hermetically connected with a furnace cover 2, the middle part of the upper side of the furnace cover 2 is provided with a cavity 3, the top port of the cavity 3 is hermetically provided with a seal cover 4 in a threaded manner, the middle part of the seal cover 4 is fixedly nested with an air inlet pipe 5, the lower end of the air inlet pipe 5 is communicated with the cavity 3, the middle part of the lower side of the furnace cover 2 is equidistantly provided with air inlet holes 6, the air inlet holes 6 are communicated with the cavity 3, the outer side of the refining furnace body 1 is provided with an outer shell 7, the inner shell 8 is fixedly nested inside the outer shell 7, a gas flow cavity 9 is arranged between the outer shell 7 and the inner shell 8, the upper part of the left side of the inner shell 8 is provided with an air outlet 10, the upper part of the left side of the inner shell 8 is provided with a protection cover 11 corresponding to the air outlet 10, the bottom port of the protection cover 11 is provided with a first filter screen 12, the upper part of the right side of the shell 7 is provided with an exhaust pipe 13, the exhaust pipe 13 is communicated with the gas flow chamber 9, one end of the exhaust pipe 13, far away from the shell 7, is connected with a filter cartridge 14, the right side of the refining furnace body 1 is provided with a support plate 15, the support plate 15 is provided with a vacuum machine 16, the input end of the vacuum machine 16 is connected with the lower end of the filter cartridge 14, the inside of the filter cartridge 14 is provided with a second filter screen 17, a third filter screen 18 is arranged below the second filter screen 17, the right side of the refining furnace body 1 is provided with a support column 19, the right side of the top of the support column 19 is fixed with a top plate 20, the top plate 20 is provided with an air extractor 21, the output end of the air extractor 21 is connected with a metal hose 22, one end of the metal hose 22, far away from the air extractor 21, is connected with an air inlet pipe 5, pneumatic cylinder 23 is all installed in the left and right sides of roof 20, pneumatic cylinder 23's flexible end is connected with bell 2, the bottom of support column 19 is fixed with bottom plate 24, install gas holder 25 on the bottom plate 24, the upper end of gas holder 25 is connected with outlet duct 26, the upper end of outlet duct 26 is connected with air supply pipe 27, the upper end and the input of air extractor 21 of air supply pipe 27 are connected.
Further, in the above technical scheme, a first high temperature resistant sealing gasket 28 is arranged at the joint of the furnace cover 2 and the refining furnace body 1, and a second high temperature resistant sealing gasket 29 is arranged at the joint of the sealing cover 4 and the furnace cover 2, so that the sealing performance between the furnace cover 2 and the refining furnace body 1 is improved, and the sealing performance between the sealing cover 4 and the furnace cover 2 is improved.
Further, in the above technical solution, handles 30 are fixed on both sides of the top of the sealing cover 4, so that the sealing cover 4 can be conveniently taken and taken by the handles 30, and the sealing cover 4 can be conveniently mounted and dismounted.
Further, in the above technical solution, the bottom of the gas flow cavity 9 is provided with a supporting block 31, the lower side of the supporting block 31 is connected with the inner wall of the bottom of the outer shell 7, the upper side of the supporting block 31 is connected with the outer side of the bottom of the inner shell 8, the supporting effect on the inner shell 8 is improved through the supporting block 31, and the mounting stability of the inner shell 8 is improved.
Further, in the above technical solution, the exhaust pipe 13 is provided with an exhaust valve 32, and the exhaust valve 32 is opened to facilitate the operation of the vacuum machine 16 for extracting the oxygen-containing gas in the refining furnace body 1.
Further, in the above technical solution, the diameter of the mesh of the second filter 17 is smaller than the diameter of the mesh of the first filter 12, and the diameter of the mesh of the third filter 18 is smaller than the diameter of the mesh of the second filter 17, so as to improve the filtering effect on the exhaust gas, intercept particles in the exhaust gas, and avoid directly discharging polluted air in the air.
Further, in the above technical solution, the air outlet pipe 26 is provided with an air outlet valve, and the air outlet valve is opened to facilitate the operation of the air extractor 21 to extract the inert gas in the air storage tank 25.
The implementation mode is specifically as follows: firstly, an exhaust valve 32 on an exhaust pipe 13 is opened, a vacuum machine 16 works, oxygen-containing hot gas in a refining furnace body 1 is extracted through the exhaust pipe 13 and a gas flow cavity 9, so that the oxygen-containing hot gas in the refining furnace body 1 is rapidly discharged, the oxygen-containing hot gas in the refining furnace body 1 firstly enters the gas flow cavity 9 through a gas outlet 10 and enters the gas outlet 10, a first filter screen 12 on a protective cover 11 intercepts large-particle impurities in the oxygen-containing hot gas, the oxygen-containing hot gas heats and preserves the temperature of an inner shell 8 when passing through the gas flow cavity 9, the consumption of heat energy is reduced, the electroslag remelting refining effect is improved, the oxygen-containing hot gas in the gas flow cavity 9 enters a filter cylinder 14 through the exhaust pipe 13, a second filter screen 17 and a third filter screen 18 in the filter cylinder 14 further intercept the particle impurities in the oxygen-containing hot gas, and the filtered gas is discharged through an output end of the vacuum machine 16, the discharged gas is filtered by the first filter screen 12 and the filter cartridge 14, particles in the discharged gas are intercepted, and the pollution of air in the air by direct discharge is avoided, after the oxygen-containing hot gas in the refining furnace body 1 is extracted, the refining furnace body 1 is in a negative pressure state, the exhaust valve 32 on the exhaust pipe 13 is closed, the exhaust valve on the exhaust pipe 26 is opened, meanwhile, the air extractor 21 works, the inert gas in the gas storage tank 25 is extracted through the gas pipe 27 and the exhaust pipe 26, the inert gas is input into the cavity 3 through the metal hose 22 and the gas inlet pipe 5 and then is input into the refining furnace body 1 through the gas inlet hole 6, so that the refining furnace body 1 is quickly filled with the inert gas, the gas protection effect is improved, the inert gas enters the gas flow cavity 9 to play a heat preservation effect, the electroslag remelting refining effect is improved, and the embodiment specifically solves the problem that the electroslag remelting gas protection device in the prior art inputs the inert gas into the refining furnace body, the oxygen-containing gas in the refining furnace body is extruded by the inert gas, the efficiency is low, and the inert gas is easy to be mixed with the oxygen-containing gas and discharged.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (7)
1. The utility model provides a gas protection device in electroslag remelting refining process, includes refining furnace body (1), its characterized in that: the top sealing connection of concise furnace body (1) has bell (2), cavity (3) have been seted up at the upside middle part of bell (2), the top port thread seal of cavity (3) has closing cap (4), the middle part of closing cap (4) is fixed nested has intake pipe (5), the lower extreme and cavity (3) of intake pipe (5) are linked together, inlet port (6) have been seted up at the downside middle part of bell (2) equidistant, inlet port (6) link up with cavity (3) mutually, the outside of concise furnace body (1) is equipped with shell (7), the inside of shell (7) is fixed nested has inner shell (8), be equipped with gas flow chamber (9) between shell (7) and inner shell (8), venthole (10) have been seted up on the left side upper portion of inner shell (8), protection casing (11) are installed to the position that the left side upper portion of inner shell (8) corresponds venthole (10), the utility model discloses a purification furnace, including casing (11), casing (7), exhaust pipe (13) are installed on the right side upper portion of casing (11), exhaust pipe (13) are linked together with gas flow chamber (9), the one end that casing (7) were kept away from in exhaust pipe (13) is connected with cartridge filter (14), backup pad (15) are installed on the right side of refining furnace body (1), install vacuum machine (16) on backup pad (15), the input of vacuum machine (16) is connected with the lower extreme of cartridge filter (14), the internally mounted of cartridge filter (14) has second filter screen (17), the below of second filter screen (17) is equipped with third filter screen (18), the right-hand support column (19) that is equipped with of refining furnace body (1), the top right side of support column (19) is fixed with roof (20), install air extractor (21) on roof (20), the output of air extractor (21) is connected with metal collapsible tube (22), the one end and the intake pipe (5) of air extractor (21) are kept away from in metal collapsible tube (22) are connected, pneumatic cylinder (23) are all installed in both parts about roof (20), the flexible end and bell (2) of pneumatic cylinder (23) are connected, the bottom of support column (19) is fixed with bottom plate (24), install gas holder (25) on bottom plate (24), the upper end of gas holder (25) is connected with outlet duct (26), the upper end of outlet duct (26) is connected with gas-supply pipe (27), the upper end and the input of air extractor (21) of gas-supply pipe (27) are connected.
2. The gas protecting device in the electroslag remelting refining process according to claim 1, wherein: the furnace cover (2) is provided with a first high-temperature-resistant sealing gasket (28) at the joint of the refining furnace body (1), and a second high-temperature-resistant sealing gasket (29) is arranged at the joint of the sealing cover (4) and the furnace cover (2).
3. The gas protecting device in the electroslag remelting refining process according to claim 1, wherein: handles (30) are fixed on two sides of the top of the sealing cover (4).
4. The gas protecting device in the electroslag remelting refining process according to claim 1, wherein: the bottom of the gas flow cavity (9) is provided with a supporting block (31), the lower side of the supporting block (31) is connected with the inner wall of the bottom of the outer shell (7), and the upper side of the supporting block (31) is connected with the outer side of the bottom of the inner shell (8).
5. The gas protecting device in the electroslag remelting refining process according to claim 1, wherein: and an exhaust valve (32) is arranged on the exhaust pipe (13).
6. The gas protecting device in the electroslag remelting refining process according to claim 1, wherein: the mesh diameter of the second filter (17) is smaller than that of the first filter (12), and the mesh diameter of the third filter (18) is smaller than that of the second filter (17).
7. The gas protecting device in the electroslag remelting refining process according to claim 1, wherein: and an air outlet valve is arranged on the air outlet pipe (26).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120362394.0U CN214300290U (en) | 2021-02-08 | 2021-02-08 | Gas protection device in electroslag remelting refining process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120362394.0U CN214300290U (en) | 2021-02-08 | 2021-02-08 | Gas protection device in electroslag remelting refining process |
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| CN214300290U true CN214300290U (en) | 2021-09-28 |
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| CN202120362394.0U Active CN214300290U (en) | 2021-02-08 | 2021-02-08 | Gas protection device in electroslag remelting refining process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114540668A (en) * | 2022-01-21 | 2022-05-27 | 中航上大高温合金材料股份有限公司 | Smelting process for producing high-temperature alloy GH4049 difficult to deform from high-purity return material |
-
2021
- 2021-02-08 CN CN202120362394.0U patent/CN214300290U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114540668A (en) * | 2022-01-21 | 2022-05-27 | 中航上大高温合金材料股份有限公司 | Smelting process for producing high-temperature alloy GH4049 difficult to deform from high-purity return material |
| CN114540668B (en) * | 2022-01-21 | 2022-10-25 | 中航上大高温合金材料股份有限公司 | Smelting process for producing high-temperature alloy GH4049 difficult to deform from high-purity return material |
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