CN219490109U - Stove table flow expander capable of improving flow guiding effect and prolonging service life - Google Patents
Stove table flow expander capable of improving flow guiding effect and prolonging service life Download PDFInfo
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- CN219490109U CN219490109U CN202222971937.6U CN202222971937U CN219490109U CN 219490109 U CN219490109 U CN 219490109U CN 202222971937 U CN202222971937 U CN 202222971937U CN 219490109 U CN219490109 U CN 219490109U
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Abstract
A hearth flow expander capable of improving flow guiding effect and prolonging service life belongs to the technical field of bell-type furnace equipment and is used for improving flow guiding effect and prolonging service life of the flow expander. The technical proposal is as follows: the diffuser comprises bottom plate and arc backup pad, the bottom plate is annular dull and stereotyped, the annular hole of bottom plate and the periphery assorted of impeller, the arc backup pad is rectangular shaped plate, the length direction of arc backup pad is located the horizontal direction, the arc backup pad has the radian in the length direction, a plurality of arc backup pads encircle the annular equipartition of bottom plate, the lower limb of arc backup pad and the face welded connection of bottom plate, the upper limb of arc backup pad is connected with the face circumference marginal relative support of loading board, be the wind channel between the adjacent arc backup pad, the guide plate is placed in the wind channel of diffuser. The utility model has simple structure and convenient use, can improve the flow guiding effect, reduce the damage of parts, save the spare part cost, prolong the service life of equipment, reduce the accident time and ensure the safe production.
Description
Technical Field
The utility model relates to a hearth diffuser of a bell-type furnace, and belongs to the technical field of bell-type furnace equipment.
Background
At present, a plurality of bell-type furnace production lines exist at home and abroad, a furnace platform is a key device of the bell-type furnace, and the furnace platform needs to bear the whole weight of a steel coil stack and an inner cover, and is required to have stronger bearing capacity, repeated heating and cooling deformation resistance capacity and higher production capacity. The diffuser, the impeller and the positioning pins are arranged on the hearth, the diffuser is formed by assembling four diffusers and eight guide plates, and the guide plates are placed in hollow cavities of the diffusers to form atmosphere channels so as to realize the outflow of impeller airflow; the bearing plate is positioned at the top of the diffuser and supports the steel coil; the four positioning pins are welded around the bearing plate to prevent the bearing plate from being misplaced; the impeller is driven by a vertical motor, so that air flow is ensured to circulate in a sealed annealing space formed by the inner cover and the furnace platform.
In the existing diffuser structure, the end part of the guide plate is not provided with an arc surrounding edge, so that high-temperature high-speed air flow directly impacts on the wall of the inner cover, the inner cover is locally overheated, the inner cover is deformed, the service life of the inner cover is shortened, and the production cost is increased. Meanwhile, the bearing plate is horizontally placed at the top of the diffuser, four positioning pins are welded at the peripheral symmetrical positions, the positioning pins are in a cold-hot alternating working condition, welding points and welding seams are easy to open and weld, the positioning effect is invalid, the bearing plate is greatly misplaced and sometimes misplaced by 30-50mm, the bearing plate interferes with a high-speed impeller rotating at the speed of 2300 revolutions per minute, the impeller is blocked and cracked, fragments fly out, and the impeller cracks even further causes a hearth hydrogen explosion accident due to the hydrogen atmosphere.
Therefore, it is necessary to improve the structure of the existing flow expander to improve the flow guiding effect, reduce the damage of the components, prolong the service life of the flow expander and ensure the safe production.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a hearth flow expander capable of improving the flow guiding effect and prolonging the service life, which can improve the flow guiding effect, reduce the damage of parts, save the spare part cost, prolong the service life of equipment, reduce the accident time and ensure the safe production.
The technical scheme for solving the technical problems is as follows:
a stove top flow expander capable of improving flow guiding effect and prolonging service life comprises a diffuser and a flow guiding plate, wherein a bearing plate is arranged above the diffuser, an impeller and a vertical motor are arranged in a middle cavity of the diffuser, and an inner cover is sleeved on the periphery of the flow expander. The improvement is that the diffuser comprises bottom plate and arc backup pad, the bottom plate is annular dull and stereotyped, the annular hole of bottom plate and the periphery assorted of impeller, the arc backup pad is rectangular shaped plate, the length direction of arc backup pad is located the horizontal direction, the arc backup pad has the circular arc degree in the length direction, a plurality of arc backup pads encircle the annular equipartition of bottom plate, the both ends of arc backup pad are relative with the annular outward flange and the hole edge of bottom plate respectively, the lower limb of arc backup pad and the face welded connection of bottom plate, the upper edge of arc backup pad is connected with the face circumference edge relative support of loading board, be the wind channel between the adjacent arc backup pad, the guide plate is placed in the wind channel of diffuser.
Above-mentioned can improve water conservancy diversion effect and life-span's stove platform expander, the guide plate is the annular plate, the annular hole diameter phase-match of the annular hole diameter of the bottom plate of guide plate and diffuser, the annular periphery diameter of guide plate is greater than the external diameter of the bottom plate of diffuser, the equipartition has a plurality of arc grooves on the annular plane of guide plate, the length, width and the circular arc degree of arc groove respectively with the horizontal cross-section phase-match of the arc backup pad of diffuser, the arc groove suit of guide plate is in the arc backup pad of diffuser, the face lower surface of guide plate is placed on the bottom plate surface of diffuser, the annular circumference outward flange of guide plate has upwards crooked radian.
Above-mentioned can improve water conservancy diversion effect and life-span's stove platform expander, the circumference edge of the top surface of a plurality of arc backup pads of diffuser has the location flange respectively, and the location flange is the ladder step, and the face circumference of loading board is placed on the ladder step of the location flange of a plurality of arc backup pads, and the inboard of the ladder step of location flange is relative and have the clearance with the face circumference lateral wall of loading board, and the ladder step of location flange carries out spacing support to the face circumference of loading board.
The beneficial effects of the utility model are as follows:
the diffuser is changed from an assembled structure into an integral structure, and is changed from original casting molding into welding molding, and the air duct is changed from spoke radial shape into spoke radial streamline design, so that the structural strength of the diffuser is enhanced, and the shape of the air duct is optimized; the original split structure of the guide plate is respectively arranged on the diffuser cavity, the diffuser arc-shaped supporting plate is changed into an integral structure, and the original single casting forming is changed into the integral stamping forming of the heat-resistant stainless steel plate, so that the structural strength is enhanced; the end part of the guide plate is added with a section of arc, the guide plate is tightly matched with the diffuser, and the air flow is ensured to be completely screwed out along the air duct at high speed; the bearing plate is horizontally arranged at the top of the diffuser and is arranged inside the positioning flange of the arc-shaped supporting plate of the diffuser, so that the bearing plate is not easy to disassemble, assemble and maintain, and the bearing plate is not misplaced, so that the bearing plate and the impeller are not interfered.
The utility model has simple structure and convenient use, can improve the flow guiding effect, reduce the damage of parts, save the spare part cost, prolong the service life of equipment, reduce the accident time and ensure the safe production. Through measurement and calculation, the direct economic benefits of reducing the single repairing cost of the furnace platform, reducing the repairing cost, reducing the production increase wound effect caused by the faults of the bell-type furnace, reducing the product quality loss such as unqualified performance and the like, and reducing the cost of the impeller and the spare parts of the inner cover can reach 322 ten thousand yuan, thereby providing a borrowable successful experience for the same type of furnace platform flow expanders in China and having huge social benefits.
Drawings
FIG. 1 is a schematic diagram of a prior art hearth diffuser;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a schematic view of a hearth diffuser of the present utility model;
FIG. 4 is a top view of FIG. 3;
FIG. 5 is a schematic view of the diffuser structure of the present utility model;
FIG. 6 is a top view of FIG. 5;
FIG. 7 is a schematic view of a baffle structure of the present utility model;
FIG. 8 is a top view of FIG. 7;
FIG. 9 is a schematic diagram of a base plate structure;
FIG. 10 is a top view of FIG. 9;
FIG. 11 is a schematic view of an arcuate support plate structure;
fig. 12 is a top view of fig. 11.
The figures are labeled as follows: the air diffuser comprises a diffuser 1, a guide plate 2, a bearing plate 3, a positioning flange 4, an air duct 5, an inner cover 6, an impeller 7, a vertical motor 8, a positioning pin 9, a steel coil 10, a bottom plate 11, an arc-shaped supporting plate 12 and an arc-shaped groove 13.
Detailed Description
The utility model consists of a diffuser 1 and a deflector 2.
Fig. 1 and 2 show that the prior diffuser, an impeller 7, a vertical motor 8 and a locating pin 9 are arranged on a furnace platform, the diffuser is assembled by four diffusers 1 and eight guide plates 2, and the guide plates 2 are placed in hollow cavities of the diffusers 1 to form an atmosphere channel so as to realize the outflow of air flow of the impeller 7; the bearing plate 3 is positioned at the top of the diffuser 1 and supports the steel coil 10; four positioning pins 9 are welded around the bearing plate 3 to prevent the bearing plate 3 from dislocation; the impeller 7 is driven by a vertical motor 8 to ensure that air flow circulates in a sealed annealing space formed by the inner cover 6 and the hearth.
Fig. 3 and 4 show that the diffuser 1 of the utility model is changed from an assembled structure to an integral structure, from original casting molding to welding molding, and the air duct 5 is changed from spoke radial shape to spoke radial streamline design, so that the structural strength of the diffuser 1 is enhanced, and the shape of the air duct 5 is optimized; the original split structure of the guide plate 2 is respectively arranged in the cavity of the diffuser 1 to be arranged on the diffuser 1 in an integral structure, and the original single casting molding is changed to be integrally formed by stamping a heat-resistant stainless steel plate, so that the structural strength is enhanced; the end part of the guide plate 2 is added with a section of arc, the guide plate 2 is tightly matched with the diffuser 1, and the air flow is ensured to be completely rotated out along the air duct at high speed; the bearing plate 3 is horizontally placed on the top of the diffuser 1 and is positioned by the positioning flange 4, so that the bearing plate 3 is not only convenient to disassemble, assemble and maintain, but also can ensure that the bearing plate 3 is not misplaced, and the bearing plate 3 and the impeller 7 are not interfered.
Fig. 5, 6, 9, 10, 11, 12 show that the diffuser 1 is composed of a base plate 11 and an arcuate support plate 12. The bottom plate 11 is an annular flat plate, and the annular inner hole of the bottom plate 11 is matched with the periphery of the impeller 7. The arc-shaped supporting plates 12 are rectangular plates, the length direction of each arc-shaped supporting plate 12 is in the horizontal direction, the arc-shaped supporting plates 12 have circular radians in the length direction, a plurality of arc-shaped supporting plates 12 are uniformly distributed around the annular shape of the bottom plate 11, and the number of the arc-shaped supporting plates 12 in one embodiment of the utility model is 16. The both ends of arc backup pad 12 are relative with the annular outward flange and the hole edge of bottom plate 11 respectively, and the lower limb of arc backup pad 12 and the face welded connection of bottom plate 11, and the upper edge of arc backup pad 12 is connected with the face circumference edge relative support of loading board 3, is wind channel 5 between the adjacent arc backup pad 12, and wind channel 5 changes spoke radial streamline design into spoke radial streamline from the spoke, is favorable to reducing wind channel air current resistance.
Fig. 7 and 8 show that the baffle plate 2 is an annular plate, the diameter of the annular inner hole of the baffle plate 2 is matched with the diameter of the annular inner hole of the bottom plate 11 of the diffuser 1, and the annular outer peripheral diameter of the baffle plate 2 is larger than the outer diameter of the bottom plate 11 of the diffuser 1. A plurality of arc grooves 13 are uniformly distributed on the annular plane of the guide plate 2, the length, the width and the circular arc degree of the arc grooves 13 are respectively matched with the horizontal section of the arc-shaped supporting plate 12 of the diffuser 1, the arc-shaped grooves 13 of the guide plate 2 are sleeved on the arc-shaped supporting plate 12 of the diffuser 1, and the lower surface of the plate surface of the guide plate 2 is placed on the surface of the bottom plate 11 of the diffuser 1.
FIGS. 3 and 7 show that the circumferential outer edge of the baffle 2 has an upward curvature, an arc radius R185mm, and an arc angle 30 0 Is beneficial to the upward high-speed transmission after the air flows out of the guide plate 2 and avoids the air flow from being sprayed on the wall of the inner coverAnd the inner cover 6 is locally overheated. The direction of the air channel 5 of the diffuser 1 and the direction of the guide plate 2 are consistent with the air outlet direction of the impeller 7, which is favorable for reducing air flow resistance, ensuring high-speed screwing-out of air flow and realizing high efficiency and energy conservation
Fig. 3 and 5 show that the circumferential edges of the top surfaces of the plurality of arc-shaped supporting plates 12 of the diffuser 1 are respectively provided with a positioning flange 4, the positioning flange 4 is a step, the plate surface circumference of the bearing plate 3 is placed on the step of the positioning flange 4 of the plurality of arc-shaped supporting plates 12, the inner side of the step of the positioning flange 4 is opposite to the plate surface circumference side wall of the bearing plate 3 and is provided with a gap, and the step of the positioning flange 4 performs limit support on the plate surface circumference of the bearing plate 3. The positioning flange 4 is designed at the top of the diffuser 1, which is favorable for fixing the position of the bearing plate 3 and avoiding equipment accidents caused by interference between the bearing plate 3 and the impeller 7.
One embodiment of the utility model is as follows:
the diffuser 1 is made of heat-resistant stainless steel containing Cr and Ni by welding, the outer diameter of the bottom plate 11 is phi 2000mm, the diameter of the inner hole is phi 960mm, the thickness is 50mm, the length of the arc-shaped supporting plate 12 is 600mm, the width is 260mm, and the thickness is 30mm.
The guide plate 2 is formed by stamping a whole steel plate with the thickness of 3mm, the outer diameter of the guide plate 2 is phi 2250mm, the diameter of an inner hole is phi 960mm, the length of the arc-shaped groove 13 is 600mm, the width is 30mm, the arc-shaped length of the end part of the guide plate 2 is 96mm, the arc-shaped radius R185mm and the arc angle 30 0 。
The upper end positioning flange 4 of the arc-shaped supporting plate 12 has a width of 50mm and a height of 30mm, and the bearing plate 3 and the positioning flange 4 have a peripheral clearance of 5mm.
Claims (3)
1. The utility model provides a can improve stove platform expander of water conservancy diversion effect and life-span, it includes diffuser (1) and guide plate (2), and loading board (3) of stove platform are located diffuser (1) top, and impeller (7) and vertical motor (8) are located the middle cavity of diffuser (1), and inner cover (6) suit is at the periphery of diffuser (1), its characterized in that: the diffuser (1) comprises bottom plate (11) and arc backup pad (12), bottom plate (11) are annular dull and stereotyped, the annular hole of bottom plate (11) is the periphery phase-match of impeller (7), arc backup pad (12) are rectangular shaped plate, the length direction of arc backup pad (12) is located the horizontal direction, arc backup pad (12) have the circular arc degree in the length direction, the annular circumference equipartition of bottom plate (11) is encircleed to a plurality of arc backup pads (12), the both ends of arc backup pad (12) are relative with the annular outward flange and the hole edge of bottom plate (11) respectively, the lower limb of arc backup pad (12) is connected with the face perpendicular welded connection of bottom plate (11), the upper edge of arc backup pad (12) is connected with the face circumference edge relative support of loading board (3), be wind channel (5) between adjacent arc backup pad (12), wind channel (5) in diffuser (1) are placed to guide plate (2).
2. The hearth diffuser of claim 1, capable of improving flow conductance and life, wherein: the guide plate (2) is an annular plate, the diameter of an annular inner hole of the guide plate (2) is matched with the diameter of an annular inner hole of a bottom plate (11) of the diffuser (1), the diameter of the annular outer periphery of the guide plate (2) is larger than the outer diameter of the bottom plate (11) of the diffuser (1), a plurality of arc-shaped grooves (13) are uniformly distributed on the annular plane of the guide plate (2), the length, the width and the circular arc degree of the arc-shaped groove (13) are respectively matched with the horizontal section of the arc-shaped supporting plate (12) of the diffuser (1), the arc-shaped groove (13) of the guide plate (2) is sleeved on the arc-shaped supporting plate (12) of the diffuser (1), the lower surface of the plate surface of the guide plate (2) is placed on the surface of the bottom plate (11) of the diffuser (1), and the annular circumference outer edge of the guide plate (2) has an upward bending radian.
3. The hearth diffuser of claim 1, capable of improving flow conductance and life, wherein: the circumference edge of the top surface of a plurality of arc backup pads (12) of diffuser (1) has location flange (4) respectively, and location flange (4) are the ladder step, and the face circumference of loading board (3) is placed on the ladder step of location flange (4) of a plurality of arc backup pads (12), and the inboard of the ladder step of location flange (4) is relative and have the clearance with the face circumference lateral wall of loading board (3), and the ladder step of location flange (4) carries out spacing support to the face circumference of loading board (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222971937.6U CN219490109U (en) | 2022-11-08 | 2022-11-08 | Stove table flow expander capable of improving flow guiding effect and prolonging service life |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222971937.6U CN219490109U (en) | 2022-11-08 | 2022-11-08 | Stove table flow expander capable of improving flow guiding effect and prolonging service life |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219490109U true CN219490109U (en) | 2023-08-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202222971937.6U Active CN219490109U (en) | 2022-11-08 | 2022-11-08 | Stove table flow expander capable of improving flow guiding effect and prolonging service life |
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| CN (1) | CN219490109U (en) |
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- 2022-11-08 CN CN202222971937.6U patent/CN219490109U/en active Active
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