CN219363742U - Silicon steel roll annealing device with split sand seal groove - Google Patents
Silicon steel roll annealing device with split sand seal groove Download PDFInfo
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- CN219363742U CN219363742U CN202223088265.0U CN202223088265U CN219363742U CN 219363742 U CN219363742 U CN 219363742U CN 202223088265 U CN202223088265 U CN 202223088265U CN 219363742 U CN219363742 U CN 219363742U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The utility model discloses a silicon steel coil annealing device with a split sand seal groove, which comprises: a base plate with a masonry base surface; the outer retainer is arranged on the masonry base surface and is enclosed with the masonry base surface to form a masonry space; the masonry part comprises a central masonry part and a peripheral masonry part which are arranged in the masonry space, and the peripheral masonry part is arranged on the periphery of the central masonry part in a surrounding manner; the furnace mantle, cover the top and the periphery of locating center masonry portion, still include: the annular groove body is provided with an upward notch and is arranged around the periphery of the central masonry part in a surrounding manner, and the bottom of the groove is pressed on the periphery masonry part; the furnace mantle is removably disposed in the annular groove body. Sealing sand in the silicon steel coil annealing device with the split sand seal groove is filled in the annular groove body, so that the sealing sand can be prevented from falling into gaps between refractory bricks and between the refractory bricks and an inner retainer; the downward pressure caused by the gravity of the furnace cover is dispersed; the service life of the center masonry part is prolonged, the problem of deformation of the bottom end of the silicon steel coil is solved, and the bottom end trimming amount of the annealed silicon steel coil is reduced.
Description
Technical Field
The utility model relates to the technical field of silicon steel annealing production, in particular to a silicon steel coil annealing device with split sand seal grooves.
Background
The annealing equipment of the silicon steel coil is mainly two kinds, one is to keep the coil structure of the silicon steel coil, and place the silicon steel coil in an annealing device; and the other is to introduce the silicon steel sheet obtained by unwinding the silicon steel coil into a continuous annealing device. The high-temperature annealing can lead the silicon steel sheet to obtain proper grain size, improve orientation degree, remove impurities and achieve the aim of improving magnetism.
The furnace platform of the annealing device mainly comprises a base plate and an outer edge guard ring, wherein the base plate and the guard ring are surrounded to form an open masonry space, a center masonry part and an outer periphery masonry part are built in the masonry space by refractory bricks, the outer Zhou Qi masonry part is arranged on the periphery of the columnar center masonry part, and a sand seal groove is formed in the top of the columnar center masonry part and used for filling sealing sand during annealing, and the sealing sand is used for covering the bottom end of an inner cover and forming a sealing structure for discharging protective gas from the inner cavity of the inner cover to the outer side of the inner cover.
The refractory structure of the trolley of the silicon steel annular annealing furnace disclosed in CN202530122U is formed by casting a casting material into an annular structure so as to prevent refractory bricks from loosening in a hot state. As an equivalent alternative to the annular casting structure, an inner retainer made of steel plates may be disposed between the central masonry portion and the peripheral masonry portion. The internal retainer of pouring material or steel plate material is inconsistent with the thermal expansion coefficient of the refractory brick, after 2 to 3 times of high-temperature annealing, gaps are generated between the masonry parts on two sides and the retainer, quartz sand falls into the gaps and is difficult to discharge, the gaps are further enlarged in a thermal state, the stability of the furnace plate is affected, the bottom end of a silicon steel coil abutted with the furnace plate is further deformed, and the trimming amount is increased. In addition, even if no guard ring is provided, after gaps in the vertical direction appear between the refractory bricks, quartz sand easily falls into the gaps adjacent to the sand seal grooves, further deteriorating the service life of the annealing device and the product yield.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art and provides a silicon steel coil annealing device with a split sand seal groove, which is used for containing sealing sand by using an annular groove body and preventing the sealing sand from falling to a hearth gap.
In order to achieve the technical effects, the technical scheme of the utility model is as follows: a silicon steel coil annealing device with split sand seal grooves, comprising:
a base plate with a masonry base surface;
the outer retainer is arranged on the masonry base surface and is enclosed with the masonry base surface to form a masonry space;
the masonry part comprises a central masonry part and a peripheral masonry part which are arranged in the masonry space, and the peripheral masonry part is arranged on the periphery of the central masonry part in a surrounding manner;
the furnace mantle is covered and is located the top and the periphery of center masonry portion still includes:
the annular groove body is provided with an upward notch and is arranged around the periphery of the central masonry part in a surrounding manner, and the bottom of the groove is pressed on the periphery masonry part; the furnace mantle is removably disposed in the annular groove body.
The preferable technical scheme is that an inner retainer is clamped between the central masonry part and the peripheral masonry part, and the inner retainer is fixedly connected with the base plate.
The preferable technical proposal is that the annular groove body and the inner retainer are mutually arranged at intervals.
The preferable technical scheme is that the annular groove body is lower than the central masonry part.
The furnace cover comprises an inner cover and an outer cover, wherein the inner cover is arranged in the annular groove body in a removable mode, and the outer cover is arranged above and at the periphery of the inner cover.
The preferable technical scheme is that a heat conduction cushion layer is clamped between the bottom surface of the annular groove body and the peripheral masonry part.
The preferable technical scheme is that the heat conduction cushion layer comprises a clamping part and a heat dissipation part which are connected with each other, the clamping part is clamped between the annular groove body and the peripheral masonry part, and the heat dissipation part is arranged on the side or the peripheral side of the crimping part away from the central masonry part.
The preferable technical scheme is that the outer periphery masonry part is provided with an outer cover crimping part, and the heat dissipation parts are arranged at intervals on the side of the outer cover crimping part close to the center masonry part.
The preferable technical scheme is that the peripheral masonry part is provided with a mounting groove, and the annular groove body is arranged in the mounting groove.
The preferable technical scheme is that a thermal expansion interval is arranged between the outer edge of the annular groove body and the mounting groove.
The utility model has the advantages and beneficial effects that:
the silicon steel coil annealing device with the split sand seal groove adopts an annular groove body which is arranged in a split way on a furnace hearth as the sand seal groove, and sealing sand is filled in the annular groove body in an annealing state, so that the sealing sand is prevented from falling into gaps between refractory bricks or into gaps between the refractory bricks and an inner retainer;
the annular groove body is stable in structure in a thermal state; the self-weight is arranged on the peripheral masonry part, so that the abutting area of the bottom surface of the groove and the peripheral masonry part is large, and the downward pressure caused by the gravity of the furnace cover is dispersed;
the service life of the center masonry part is prolonged, the problem of deformation of the bottom end of the silicon steel coil is solved, and the bottom end trimming amount of the annealed silicon steel coil is reduced.
Drawings
FIG. 1 is a schematic cross-sectional view of a hearth of an annealing apparatus for a silicon steel coil according to an embodiment;
FIG. 2 is a schematic cross-sectional view of a furnace platen of another embodiment of a silicon steel coil annealing apparatus;
FIG. 3 is a schematic cross-sectional view of a furnace platen of a silicon steel coil annealing apparatus according to yet another embodiment;
FIG. 4 is a schematic perspective view of an annular groove;
FIG. 5 is a schematic cross-sectional view of the hood-type furnace of the embodiment;
in the figure: 1. a substrate; 2. an outer retainer; 3. a masonry section; 31. a center masonry section; 32. a peripheral masonry section; 321. a mounting groove; 4. an inner cover; 5. an outer cover; 6. an annular groove body; 7. an inner retainer; 8. a thermally conductive pad layer; 81. a clamping part; 82. and a heat dissipation part.
Detailed Description
The following describes the embodiments of the present utility model further with reference to the drawings and examples. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and are not intended to limit the scope of the present utility model.
In the description of the present application, it is to be noted that, unless otherwise indicated, the meaning of "plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," and the like indicate an orientation or positional relationship merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the present application.
In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or fixedly connected; can be mechanically or electrically connected; can be directly connected or indirectly connected. The specific meaning of the above terms in the present utility model can be understood as appropriate by those of ordinary skill in the art.
Examples
As shown in fig. 1 to 5, the silicon steel roll annealing device with the split sand seal groove comprises a base plate 1, an outer retainer 2, a masonry part 3, a furnace cover and an annular groove body 6; the base plate 1 is provided with a masonry base surface; the outer guard ring 2 is arranged on the masonry base surface, and the outer guard ring 2 and the masonry base surface are enclosed to form a masonry space; the masonry part 3 includes a center masonry part 31 and an outer periphery masonry part 32 provided in the masonry space; the outer peripheral masonry part 32 is provided around the outer periphery of the center masonry part 31; the hood is provided above and around the center masonry part 31, and includes: the annular groove body 6 is provided with an upward notch, the annular groove body 6 is arranged on the periphery of the central masonry part 31 in a surrounding mode, and the bottom of the annular groove body 6 is arranged on the periphery masonry part 32 in a pressing mode; the furnace mantle is removably arranged in the annular groove body 6.
It will be appreciated that the annular groove body 6 is formed by the sealing connection of a groove bottom plate and groove side baffles on both sides, and the relation between the upward groove opening width and the groove bottom width can be the groove opening width and the groove bottom width, or the groove opening width is larger or smaller than the groove bottom width, preferably, the groove opening width is equal to or larger than the groove bottom width.
Optionally, the annular groove body 6 is provided with lifting lugs, so that the annular groove body 6 is conveniently lifted away from the peripheral masonry part 32 by adopting lifting equipment before the furnace body is rebuilt, and further the annular groove body 6 is subjected to shaping deformation detection, internal stress is eliminated by means of knocking and the like; after the furnace hearth is built, the annular groove body 6 is hoisted above the peripheral building part 32.
Alternatively, the furnace body containing the annular groove body 6 may be selected as: as shown in fig. 1, the center masonry part 31 and the outer peripheral masonry part 32 are each a straight column; or as shown in fig. 2, there is no obvious boundary between the central masonry part 31 and the peripheral masonry part 32, and the construction is made up of staggered lamination and lap joint of the built refractory bricks.
As shown in fig. 3, in another preferred embodiment, an inner retainer 7 is interposed between the center masonry part 31 and the outer circumferential masonry part 32, and the inner retainer 7 is fixedly connected to the base plate 1. The inner retainer 7 can reduce the heat transfer from the higher temperature center masonry part 31 to the outer periphery masonry part 32, which is beneficial to control the temperature of the hearth and reduce heat loss.
In a further preferred embodiment, as shown in fig. 3 and 5, the annular groove 6 is spaced from the inner retainer 7. When the central masonry part 31 is provided with a heating element, heat transfer is performed between the top of the central masonry part 31 and the heating element, gaps are formed between refractory bricks after annealing for 1-2 times, and the heat of the heating element is transferred to the inner retainer 7 through the gaps, so that the temperature of the inner retainer 7 is increased, and the thermal expansion is increased. The annular groove body 6 and the inner retainer 7 are arranged at intervals, so that the annular groove body 6 is prevented from being further influenced by the thermal expansion of the inner retainer 7.
In another preferred embodiment, as shown in fig. 1-3, the annular groove 6 is lower than the central masonry 31. The top surface of the central masonry part 31 is provided with a furnace plate, i.e. the annular groove body 6 is lower than the top surface of the furnace plate, which is helpful for the protection gas above the furnace plate to be more fully discharged through the gaps of the sealing sand and the furnace cover in the annular groove body 6.
In another preferred embodiment, as shown in fig. 5, the furnace hood comprises an inner hood 4 and an outer hood 5, the inner hood 4 being removably arranged in the annular groove 6, the outer hood 5 being provided over and around the inner hood 4.
In another preferred embodiment, as shown in fig. 2-3, a thermally conductive pad layer 8 is sandwiched between the bottom surface of the annular groove 6 and the peripheral masonry portion 32. Under high temperature annealing conditions, the annular groove body 6 itself thermally expands, and the accumulation of internal stress may generate destructive stress, resulting in the possibility of deformation of the groove bottom plate and the groove side plate of the annular groove body 6. The heat conduction cushion layer 8 is utilized to accelerate the heat of the annular groove body 6 to be specially transferred to the peripheral masonry part 32 with lower temperature, and the temperature of the annular groove body 6 is properly reduced. Alternatively, the heat conductive pad layer 8 may be graphite paper.
As shown in fig. 3, in another preferred embodiment, the heat conductive pad layer 8 includes a clamping portion 81 and a heat dissipation portion 82 that are connected to each other, the clamping portion 81 being sandwiched between the annular groove body 6 and the outer peripheral masonry portion 32, and the heat dissipation portion 82 being provided on a side or a peripheral side of the pressure bonding portion away from the center masonry portion 31. The heat radiating portion 82 can further increase the heat exchange contact area with the peripheral masonry portion 32, accelerate the heat exchange rate and the heat exchange amount between the annular groove body 6 and the peripheral masonry portion 32, and reduce the temperature of the annular groove body 6, as the temperature of the portion of the peripheral masonry portion 32, which is farther from the center masonry portion 31, is lower.
In another preferred embodiment, as shown in fig. 3, the outer peripheral masonry part 32 is provided with a housing crimp part, and the heat radiating parts 82 are provided at intervals on the side of the housing crimp part near the center masonry part 31. The heat dissipation part 82 and the outer cover crimping part are arranged at intervals, so that heat of the annular groove body 6 is prevented from being transferred to the outer cover 5 through heat conduction, and the temperature of the outer cover 5 during annealing production of the silicon steel coil is further reduced.
As shown in fig. 1 to 3, in another preferred embodiment, the outer circumferential masonry part 32 is provided with a mounting groove 321, and the annular groove 6 is provided in the mounting groove 321. The mounting groove 321 facilitates positioning the placement position of the annular groove body 6. Further, the heat dissipating portion 82 may be disposed on the side of the outer edge of the mounting groove 321, so as to further increase the heat conducted from the annular groove 6 to the outer peripheral masonry portion 32 through the heat dissipating portion 82. Specifically, the mounting groove 321 is closely adjacent to the outer periphery of the center masonry part 31, or the mounting groove 321 is spaced from the center masonry part 31.
In another preferred embodiment, as shown in fig. 1-3, a thermal expansion gap is provided between the outer edge of the annular groove body 6 and the mounting groove 321. The annular groove body 6 is pressed on the peripheral masonry part 32 by the dead weight, so that the stability of the peripheral masonry structure is prevented from being influenced by the expansion of the groove body due to heating, and the collision of the annular groove body 6 shaking during hoisting on refractory bricks on the wall of the mounting groove 321 is reduced.
The working process of the silicon steel coil annealing device with the split sand seal groove comprises the following steps:
s1, based on a built central building part 31 and a built peripheral building part 32, placing an annular groove body 6 on the peripheral building part 32 and the periphery of the central building part 31;
s2: an electric heating element is arranged in a groove at the top end of the central masonry part 31, a furnace plate is arranged at the top end of the central masonry part 31, and a silicon steel roll is arranged on the furnace plate;
s3: sealing sand is arranged in the annular groove body 6, an inner cover 4 and an outer cover 5 are sequentially covered, the bottom end of the inner cover 4 is arranged in the annular groove body 6, and the sealing sand covers the bottom end of the inner cover 4;
s4: the electric heating element is started, protective gas is blown into the hearth provided with the silicon steel coil through the center of the center masonry part 31, the protective gas firstly rises to the top end of the inner cover 4 from the center hole of the silicon steel coil, then descends through the interval between the outer edge side surface of the silicon steel coil and the inner cover 4, is discharged between the inner cover 5 and the outer cover 4 through the gap between the sealing sand and the bottom end of the inner cover 4, and the above protective gas flows to be beneficial to enhancing the convection heat transfer speed.
The split sand seal groove prevents sealing sand from falling into gaps of refractory bricks, the service life of a single-time built furnace table is prolonged by 1-2 furnaces on the basis of the original furnace table, the temperature in a furnace chamber is accurately controlled, and the improvement of the stability of a silicon steel coil annealing process and the consistency of annealed products is facilitated.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that it will be apparent to those skilled in the art that several modifications and variations can be made without departing from the technical principle of the present utility model, and these modifications and variations should also be regarded as the scope of the utility model.
Claims (10)
1. A silicon steel coil annealing device with split sand seal grooves, comprising:
a base plate with a masonry base surface;
the outer retainer is arranged on the masonry base surface and is enclosed with the masonry base surface to form a masonry space;
the masonry part comprises a central masonry part and a peripheral masonry part which are arranged in the masonry space, and the peripheral masonry part is arranged on the periphery of the central masonry part in a surrounding manner;
the furnace mantle is covered and is located the top and the periphery of center masonry portion, its characterized in that still includes:
the annular groove body is provided with an upward notch and is arranged around the periphery of the central masonry part in a surrounding manner, and the bottom of the groove is pressed on the periphery masonry part; the furnace mantle is removably disposed in the annular groove body.
2. The apparatus of claim 1, wherein an inner retainer is interposed between the central masonry and the peripheral masonry, the inner retainer being fixedly connected to the base plate.
3. The apparatus of claim 2 wherein said annular channel and said inner retainer are spaced apart from each other.
4. The apparatus of claim 1, wherein the annular groove is lower than the central masonry.
5. The apparatus of claim 1, wherein the furnace enclosure comprises an inner enclosure removably disposed in the annular channel and an outer enclosure disposed over and around the inner enclosure.
6. The annealing device for silicon steel rolls with split sand seal grooves as set forth in claim 5, wherein a heat conductive pad layer is interposed between the bottom surface of said annular groove body and the peripheral masonry portion.
7. The apparatus of claim 6, wherein the heat conducting pad layer comprises a clamping portion and a heat dissipating portion, wherein the clamping portion is clamped between the annular groove and the outer circumferential masonry portion, and the heat dissipating portion is disposed on a side or a circumferential side of the pressure bonding portion away from the central masonry portion.
8. The apparatus of claim 7, wherein the peripheral masonry portion is provided with a housing crimp portion, and the heat sink portions are spaced laterally of the housing crimp portion from the central masonry portion.
9. The silicon steel roll annealing apparatus with split sand seal groove as recited in claim 1, wherein said outer peripheral masonry portion is provided with a mounting groove, said annular groove being provided in said mounting groove.
10. The apparatus of claim 9, wherein a thermal expansion gap is provided between the outer edge of the annular groove and the mounting groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223088265.0U CN219363742U (en) | 2022-11-17 | 2022-11-17 | Silicon steel roll annealing device with split sand seal groove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223088265.0U CN219363742U (en) | 2022-11-17 | 2022-11-17 | Silicon steel roll annealing device with split sand seal groove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219363742U true CN219363742U (en) | 2023-07-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223088265.0U Active CN219363742U (en) | 2022-11-17 | 2022-11-17 | Silicon steel roll annealing device with split sand seal groove |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219363742U (en) |
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- 2022-11-17 CN CN202223088265.0U patent/CN219363742U/en active Active
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