CN211227215U - Single-tube diplopore structure dip pipe - Google Patents
Single-tube diplopore structure dip pipe Download PDFInfo
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- CN211227215U CN211227215U CN201922207599.7U CN201922207599U CN211227215U CN 211227215 U CN211227215 U CN 211227215U CN 201922207599 U CN201922207599 U CN 201922207599U CN 211227215 U CN211227215 U CN 211227215U
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Abstract
A single-tube double-hole structure dip pipe belongs to the technical field of molten steel secondary refining. The side wall of the single-tube double-hole structure dip pipe comprises an outer-coated fire-resistant layer, a side wall steel structure, a side wall pouring layer and a fire-resistant inner lining layer which are sequentially arranged from outside to inside, the middle partition wall comprises a partition wall steel structure, and partition wall pouring layers and partition wall fire-resistant layers are arranged on two sides of the partition wall steel structure; refractory inner liner and partition wall flame retardant coating are equallyd divide and are do not included the supreme three-layer of setting gradually down and are able to bear or endure firebrick, and refractory inner liner's one side that is close to lateral wall pouring layer is provided with the recess, and one side that is close to partition wall pouring layer is able to bear or endure firebrick of partition wall flame retardant coating also is provided with the recess. The single-tube diplopore structure dip pipe is suitable for an RH vacuum refining furnace, the high-temperature strength, high-temperature erosion resistance, thermal expansion resistance, scouring resistance, floating resistance and other performances of the dip pipe are obviously improved, the stability is improved, and the service life of the dip pipe is prolonged.
Description
Technical Field
The utility model relates to the technical field of molten steel furnace external refining, in particular to a single tube diplopore structure dip pipe.
Background
The RH vacuum degassing device is a representative device of secondary refining, can realize various metallurgical functions of molten steel decarburization and degassing, alloy element addition, temperature compensation, inclusion removal and the like in a vacuum environment, and is an essential component of industrial production of clean steel represented by ultra-low carbon steel. The traditional RH furnace is mainly characterized in that a double-circular dip pipe is inserted into a steel ladle to play a role of a channel for the upward and downward flow of molten steel, when the vacuum degree in a tank is continuously improved, the molten steel flows into a vacuum tank through an ascending pipe under the double actions of a vacuum environment and lifting gas and then flows back to the steel ladle from the other side, and finally the molten steel forms a circulating flow field of the ascending pipe → a vacuum tank → a descending pipe → the steel ladle. In the process, the working environment of the dip pipe is the worst, and the dip pipe is most seriously corroded by high-temperature solution, so the requirements on the performances of high-temperature corrosion resistance, thermal shock resistance, thermal expansion rate and the like of the dip pipe are strictest. And the pouring layer of the dip pipe is exposed in molten steel and is continuously eroded by scouring to form a pit, the molten steel is left in the pit to begin to erode the brick joint of the upper refractory brick layer, and finally the refractory brick falls off, so that the problems of serious erosion of the castable, falling off of the refractory brick and the like can occur in the smelting process of the conventional dip pipe, the service life of the dip pipe is obviously shortened, and the production cost of the molten steel is improved.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem that prior art exists, the utility model provides a single tube diplopore structure dip pipe is applicable to RH vacuum refining furnace, is showing the high temperature strength who has improved the dip pipe, anti high temperature erosion, thermal expansion resistance, antiscour, performance such as anti come-up, has improved stability, has prolonged the life of dip pipe.
In order to realize the purpose, the technical scheme of the utility model is that:
a single-tube diplopore structure dip pipe comprises a riser and a downcomer, wherein the riser is composed of an arc-shaped inner wall on one side of a side wall of the dip pipe and a side wall surface of a middle partition wall, the downcomer is composed of an arc-shaped inner wall on the other side of the side wall of the dip pipe and a side wall surface of the middle partition wall, the side wall of the dip pipe comprises an outer-coated fire-resistant layer, a side wall steel structure, a side wall pouring layer and a fire-resistant inner lining layer which are sequentially arranged from outside to inside, the middle partition wall comprises a partition wall steel structure, and partition;
refractory inner liner and partition wall flame retardant coating are equallyd divide and are do not included the supreme three-layer of setting gradually down and are able to bear or endure firebrick, refractory inner liner's one side that is close to lateral wall pouring layer is provided with the recess, one side that is close to partition wall pouring layer is able to bear or endure firebrick of partition wall flame retardant coating also is provided with the recess.
Refractory lining layer and partition wall flame retardant coating are equallyd divide and are do not include the concrete setting mode that supreme three-layer was able to bear or endure firebrick that sets gradually down: the lower floor of the fire-resistant inner liner layer is built by laying bricks one, the middle level and the upper strata of the fire-resistant inner liner layer are built by laying bricks two, the lower floor of the partition fire-resistant layer is built by laying bricks three, the middle level and the upper strata of the partition fire-resistant layer are built by laying bricks four, the lower floor of the fire-resistant inner liner layer and the lower floor of the partition fire-resistant layer are built by laying bricks five and six, the middle level and the upper level of the fire-resistant inner liner layer are built by laying bricks seven and eight with the middle level of the partition fire-resistant layer and the upper level respectively.
The side wall steel structure and the partition wall steel structure are both provided with brick supporting rings and V-shaped anchoring parts, the lower part of the side wall steel structure is provided with a steel structure inclined surface inclined towards the interior of the dip pipe, the angle of the steel structure inclined surface inclined towards the interior of the dip pipe is 25-35 degrees, and the height of the steel structure inclined surface is 100-150 mm.
The refractory bricks on the lower layer of the refractory lining layer and the partition refractory layer are provided with clamping grooves matched with the brick supporting rings, and the refractory bricks on the lower layer of the refractory lining layer are also provided with refractory brick inclined planes corresponding to the steel structure inclined planes.
Refractory bricks of the refractory lining layer and the partition wall refractory layer are all combined with magnesia-chrome bricks through electric melting, and the heights of the refractory bricks are equal.
Outsourcing flame retardant coating, lateral wall pouring layer and partition wall pouring layer all adopt the pouring of corundum spinel pouring material, the thickness on lateral wall pouring layer and partition wall pouring layer is 30 ~ 40mm, the height ratio on lateral wall pouring layer the high 30 ~ 50mm of height on partition wall pouring layer, the height of outsourcing flame retardant coating is 900 ~ 950 mm.
The recess is the semiellipse shape structure of level setting, and the width of recess is 30 ~ 40mm, and the degree of depth of recess also is 30 ~ 40 mm.
The lower part of the ascending pipe is provided with a plurality of argon pipes with the diameter of 5-7mm for blowing lifting gas into the ascending pipe, the argon pipes are arranged in two layers, and the upper argon pipe and the lower argon pipe are arranged in a staggered mode.
A manufacturing method of a single-tube double-hole structure dipping pipe is used for manufacturing the single-tube double-hole structure dipping pipe and comprises the following steps:
s1, welding the side wall steel structure, the partition wall steel structure, the V-shaped anchoring piece, the brick supporting ring and the flange plate into an integral steel structure, and preparing refractory bricks, a pouring material and a tire membrane;
s2, placing the integral steel structure in a moulding bed, building a refractory lining layer and a partition wall refractory layer, wherein in the building process, refractory bricks on the lower layer of the refractory lining layer are placed on corresponding brick supporting rings, longitudinal brick joints of two adjacent layers of refractory bricks are staggered with each other, and pouring spaces are reserved between the refractory lining layer and a side wall steel structure and between the partition wall refractory layer and a partition wall steel structure;
s3, arranging argon pipes, and enabling the argon pipes to penetrate through a steel structure of the fire-resistant lining layer and the fire-resistant bricks or a steel structure of a partition fire-resistant layer and the fire-resistant bricks so that the upper layer of argon pipes and the lower layer of argon pipes are arranged in a staggered mode;
s4, adopting a pouring material to pour an outer wrapping fire-resistant layer, a side wall pouring layer and a partition wall pouring layer;
s5, curing the outer package fire-resistant layer, the side wall pouring layer and the partition wall pouring layer, removing the tire mold after the pouring material is solidified, and baking the dip pipe.
In the step S4, the vibrating rod is used to compact the material layer in the process of casting the outer wrapping fire-resistant layer, the side wall casting layer and the partition wall casting layer.
The utility model has the advantages that:
1) the refractory bricks of the refractory lining layer and the refractory layer of the partition wall are provided with the grooves, the castable can form a lock catch with the refractory bricks after entering the grooves and solidifying, and the arc-shaped edges of the grooves can ensure that the grooves are smoothly filled with the castable and a gap is not left between the castable and the refractory bricks, so that the refractory bricks and the pouring layer can be firmly meshed together, and the lining strength of the dip pipe is obviously improved;
2) the side wall of the dip pipe and the intermediate partition wall both adopt a steel structure as a supporting framework, the dip pipe resists molten steel scouring erosion by being provided with refractory bricks, argon pipes are distributed on a pouring layer, the filling height of a pouring layer of the partition wall is 30-50 mm lower than the top of the dip pipe, and a gap is filled by using a ramming mass when the dip pipe is installed and connected, so that the strength and the durability of the intermediate partition wall are improved, the argon pipes are protected, and the castable can be prevented from falling off due to the fact that the castable expands when being heated and pushes open the refractory bricks of the circulating pipe above;
3) the utility model discloses an adopt not resistant firebrick of isostructure to improve the structure of dip pipe, optimized the technology of building by laying bricks or stones of dip pipe, especially middle partition wall part's technology, can show to improve its high temperature strength, anti high temperature erosion, thermal shock resistance, thermal expansion resistance, scour resistance, performance such as anti come-up, improved stability, prevent that resistant material from droing, prolonged the life of dip pipe, increased the stove number that the dip pipe was smelted, reduction in production cost.
Additional features and advantages of the invention will be set forth in part in the detailed description which follows.
Drawings
Fig. 1 is a cross-sectional view of a single-tube double-hole structure dip pipe provided by the embodiment of the invention in the horizontal direction;
fig. 2 is a cross-sectional view of a single-tube double-hole structure dip pipe provided by the embodiment of the invention in the vertical direction;
fig. 3 is a schematic structural view of a first refractory brick according to an embodiment of the present invention, in which (a) is a front view and (b) is a plan view;
fig. 4 is a schematic structural view of a second refractory brick according to an embodiment of the present invention, in which (a) is a front view and (b) is a plan view;
fig. 5 is a schematic structural view of a third refractory brick according to an embodiment of the present invention, in which (a) is a front view and (b) is a plan view;
fig. 6 is a schematic structural view of a fourth refractory brick according to an embodiment of the present invention, in which (a) is a front view and (b) is a plan view;
fig. 7 is a schematic structural view of a refractory brick five according to an embodiment of the present invention, in which (a) is a front view and (b) is a plan view;
fig. 8 is a schematic structural view of a sixth refractory brick according to an embodiment of the present invention, in which (a) is a front view and (b) is a plan view;
fig. 9 is a schematic structural view of a firebrick seven according to an embodiment of the present invention, in which (a) is a front view and (b) is a plan view;
fig. 10 is a schematic structural view of a refractory brick eight according to an embodiment of the present invention, in which (a) is a front view and (b) is a plan view;
fig. 11 is a schematic view of longitudinal brick joints of two adjacent refractory bricks of the refractory lining layer built in a staggered manner.
Reference numerals in the drawings of the specification include:
1-outer wrapping fire-resistant layer, 2-side wall steel structure, 3-partition wall steel structure, 4-fire-resistant inner lining layer, 5-flange plate, 6-argon pipe, 7-V-shaped anchoring piece, 8-brick supporting ring, 9-first refractory brick, 10-second refractory brick, 11-third refractory brick, 12-fourth refractory brick, 13-ramming mass, 14-side wall pouring layer, 15-partition wall pouring layer, 16-partition wall fire-resistant layer, 17-groove, 18-clamping groove, 19-fifth refractory brick, 20-sixth refractory brick, 21-seventh refractory brick and 22-eighth refractory brick.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "vertical", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "a," "an," "two," "three," "four," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, mechanically or electrically connected, or may be connected between two elements through an intermediate medium, or may be directly connected or indirectly connected, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.
In order to solve the problem that prior art exists, as shown in fig. 1 to fig. 11, the embodiment of the utility model provides a single tube diplopore structure dip pipe is applicable to RH vacuum refining furnace, is showing the high temperature strength who has improved the dip pipe, high temperature erosion resistance, thermal expansion resistance, scouring resistance, performance such as anti come-up, has improved stability, has prolonged the life of dip pipe.
As shown in fig. 1 to 11, a single-tube diplopore structure dip pipe comprises a riser formed by an arc-shaped inner wall on one side of a side wall of the dip pipe and a side wall of a middle partition wall, and a downcomer formed by an arc-shaped inner wall on the other side of the side wall of the dip pipe and a side wall of the middle partition wall, wherein the side wall of the dip pipe comprises an outer-coated refractory layer 1, a side wall steel structure 2, a side wall pouring layer 14 and a refractory lining layer 4 which are sequentially arranged from outside to inside, the middle partition wall comprises a partition wall steel structure 3, and partition wall pouring layers 15 and partition wall refractory layers 16 are arranged;
a groove 17 is formed in one side, close to the side wall pouring layer 14, of a refractory brick of the refractory lining layer 4, a groove 17 is also formed in one side, close to the partition wall pouring layer 15, of a refractory brick of the partition wall refractory layer 16, the groove 17 is of a horizontally arranged semi-elliptical structure, the width of the groove 17 is 30-40 mm, and the depth of the groove 17 is 30-40 mm;
the lower part of the ascending pipe is provided with a plurality of argon pipes 6 with the diameter of 5-7mm for blowing lifting gas into the ascending pipe, the argon pipes 6 are provided with two layers, and the upper layer and the lower layer of the argon pipes 6 are arranged in a staggered mode.
The utility model discloses a whole straight tubular type that is of dip pipe, the dip pipe is whole fixed with the real empty room bottom steel construction of RH vacuum refining furnace through welding flange dish 5, lateral wall steel construction 2, fire-resistant inner liner 4 and partition wall flame retardant coating 16 highly equal, lateral wall pouring layer 14's packing height and 2 parallel and level of lateral wall steel construction, partition wall pouring layer 15's height and 3 parallel and level of partition wall steel construction, lateral wall pouring layer 14's height is 30 ~ 50mm than the height of partition wall pouring layer 15 makes and leaves 30 ~ 50 mm's space between partition wall pouring layer 15 and the dip pipe top, fill in this space when the dip pipe is connected with real empty room and stamp material 13 tamp, be used for preventing that the dip pipe from inserting high temperature back partition wall pouring layer 15 upwards inflation molten steel and push open the resistant firebrick of firebrick circular flow pipe in top, stamp material 13 adopts the magnesium. The middle partition wall is arranged in the middle of the dip pipe and divides the dip pipe into an arched ascending pipe and an arched descending pipe integrally, a plurality of stainless steel argon pipes 6 with the diameter of 6mm are evenly arranged in the area below the ascending pipe, the argon pipes 6 are arranged in a staggered mode, the upper layer and the lower layer are arranged in a staggered mode, a thick gap is reserved between the refractory bricks and the steel structure and serves as a pouring layer, the argon pipes 6 are arranged in the pouring layer, the argon pipes 6 cannot be crossed, and the argon pipes 6 penetrate through holes in the refractory bricks of the side wall steel structure 2 and the refractory lining layer 4 and the refractory bricks of the partition wall steel structure 3 and the partition wall refractory layer 16. Refractory lining layer 4 and partition wall flame retardant coating 16 all build the three-layer with resistant firebrick by laying bricks or stones, the bottom of the resistant firebrick of lower floor is equipped with draw-in groove 18 and makes it steadily place on holding in the palm brick ring 8 and support above-mentioned two-layer resistant firebrick, vertical brickwork joint between the adjacent upper and lower floor resistant firebrick staggers mutually, every resistant firebrick all is provided with 2 ~ 3 recesses 17 with the contact surface of pouring material, open the contact surface of resistant firebrick and pouring material has recess 17, make the pouring material get into behind the recess 17 solidification and form the hasp with resistant firebrick, the arc limit of recess 17.
As shown in fig. 2, the partition wall steel structure 3 is arranged in the middle of the middle partition wall as a supporting part, the side wall steel structure 2 is arranged in the middle of the side wall of the dip pipe as a supporting part, the side wall steel structure 2 and the partition wall steel structure 3 are both provided with a brick supporting ring 8 and a V-shaped anchoring part 7, the brick supporting ring 8 is arranged at the bottom of the inner sides of the side wall steel structure 2 and the partition wall steel structure 3, the brick supporting ring 8 is an annular iron sheet for dragging refractory bricks, and the annular shape is adopted to prevent thermal expansion; the V-shaped anchoring parts 7 are arranged on one sides of the side wall steel structure 2 and the partition wall steel structure 3 close to the pouring layer, namely the outer sides and the bottom edges of the side wall steel structure 2 and the partition wall steel structure 3. The whole of the side wall steel structure 2 is of an annular structure, the lower part of the side wall steel structure 2 is provided with a steel structure inclined plane which is inclined and contracted towards the interior of the dip pipe, the inclined angle of the steel structure inclined plane towards the interior of the dip pipe is 25-35 degrees, the height of the steel structure inclined plane is 100-150mm, the whole partition wall steel structure 3 is of a plane structure, the height of the partition wall steel structure 3 is 30-50 mm lower than the top of the dip pipe, the bottom of the partition wall steel structure is welded with a V-shaped anchoring piece 7, and the two sides. Specifically, the bottom of lateral wall steel construction 2 is provided with a plurality of support brick rings 8 and 9 bottoms of nai firebrick are provided with draw-in groove 18, make lateral wall steel construction 2 hold and to endure firebrick 9 through holding in the palm brick ring 8 and the cooperation of draw-in groove 18, and the both sides of 3 bottoms of partition wall steel construction are equallyd divide and are do not be provided with a plurality of support swivels and resistant firebrick three 11 bottoms and be provided with draw-in groove 18, make partition wall steel construction 3 hold resistant firebrick three 11 through holding in the palm.
As shown in fig. 3 to 10, the first refractory brick 9 and the second refractory brick 10 are both in a trapezoidal three-dimensional structure, the refractory lining layer 4 for building the dip pipe, the third refractory brick 11 and the fourth refractory brick 12 are both in a cubic structure, the partition refractory layer 16 for building the planar structure, the fifth refractory brick 19, the sixth refractory brick 20, the seventh refractory brick 21 and the eighth refractory brick 22 are special-shaped bricks for building the connection between the refractory lining layer 4 and the partition refractory layer 16, as shown in fig. 1, one side surfaces of the fifth refractory brick 19, the sixth refractory brick 20, the seventh refractory brick 21 and the eighth refractory brick 22 far away from the side wall casting layer 14 form a plane perpendicular to the partition wall, and the fifth refractory brick 19, the sixth refractory brick 20, the seventh refractory brick 21 and the eighth refractory brick 22 respectively located at two sides of the partition wall are symmetrical in structure, so that the ascending pipe and the descending pipe are in, specifically, for example, two refractory bricks five 19 positioned on two sides of the intermediate wall are symmetrical in structure. The resistant firebrick that is located the 16 lower floors of fire-resistant inner liner 4 and partition wall flame retardant coating all is provided with and holds in the palm brick ring 8 complex draw-in groove 18, it is concrete, resistant firebrick one 9, resistant firebrick three 11 and the resistant firebrick five 19 and resistant firebrick six 20 of the 4 lower floors of fire-resistant inner liner and the 16 lower floors junction both sides of partition wall flame retardant coating all are provided with and hold in the palm brick ring 8 complex draw-in groove 18, and, the resistant firebrick that is located the 4 lower floors of fire-resistant inner liner still is provided with the resistant firebrick inclined plane that corresponds with the steel construction inclined plane, resistant firebrick inclined plane corresponds with.
As shown in fig. 11, each of the refractory bricks of the refractory lining layer 4 and the refractory layer 16 of the partition wall adopts an electric smelting recombination magnesite-chrome brick, and the heights of the refractory bricks are all equal, specifically, the first 9, the second 10, the third 11, the fourth 12, the fifth 19, the sixth 20, the seventh 21 and the eighth 22 of the refractory bricks adopt an electric smelting recombination magnesite-chrome brick, and the heights of the first 9, the second 10, the third 11, the fourth 12, the fifth 19, the sixth 20, the seventh 21 and the eighth 22 of the refractory bricks are all equal, the specific size is determined according to the tonnage of the RH vacuum refining furnace, and meanwhile, the longitudinal brick joints between the two adjacent layers of refractory bricks are staggered and laid.
As a preferred embodiment, the outer fireproof layer 1, the side wall pouring layer 14 and the partition wall pouring layer 15 are all poured by corundum spinel pouring materials, the thicknesses of the side wall pouring layer 14 and the partition wall pouring layer 15 are both 30-40 mm, the height of the side wall pouring layer 14 is 30-50 mm higher than that of the partition wall pouring layer 15, and the height of the outer fireproof layer 1 is 900-950 mm.
A manufacturing method of a single-tube double-hole structure dipping pipe is used for manufacturing the single-tube double-hole structure dipping pipe and comprises the following steps:
s1, welding the side wall steel structure 2, the partition wall steel structure 3, the V-shaped anchoring piece 7, the brick supporting ring 8 and the flange plate 5 into an integral steel structure, adopting an integrally formed structure with strong stability, preparing refractory bricks, a casting material and a tire membrane, wherein the casting material adopts a corundum spinel casting material, the tire membrane adopts the prior art, and an outer fireproof layer 1 is cast in a space between the tire membrane and the side wall steel structure 2;
prepare all kinds of resistant firebricks, castables and steel construction according to the design requirement before building the dip pipe, resistant firebrick's prefabrication is the same with resistant firebrick's preparation among the prior art, only structural according to the utility model discloses a brick type is processed to trompil on steel construction and resistant firebrick is prepared for the installation of argon gas pipe 6.
S2, placing the integral steel structure in a moulding bed, building the refractory lining layer 4 and the partition wall refractory layer 16, wherein in the building process, the refractory bricks at the lower layer of the refractory lining layer 4 are placed on the corresponding brick supporting rings 8, the longitudinal brick joints of two adjacent layers of refractory bricks are staggered, and pouring spaces are reserved between the refractory lining layer 4 and the side wall steel structure 2 and between the partition wall refractory layer 16 and the partition wall steel structure 3;
steadily place the integral steel structure in the fetal membrane, fire brick begins to build by laying bricks or stones, fire brick one 9, fire brick three 11, fire brick five 19 and fire brick six 20 steadily build by laying bricks or stones on the support brick ring 8 of lateral wall steel construction 2 and partition wall steel construction 3 that correspond, later begin to build by laying bricks or stones middle level and the upper strata of fire brick of fire-resistant inner liner 4 and partition wall flame retardant coating 16, adjacent two-layer fire brick adopts the mode that vertical brickwork joint is crisscross each other, the masonry process of this dip pipe has been improved, it is 30 ~ 40mm thick to reserve the pouring space between fire-resistant inner liner 4 and the lateral wall steel construction 2 and between partition wall flame retardant coating 16 and the partition wall steel construction 3, be used for pouring.
S3, arranging argon pipes 6, and enabling the argon pipes 6 to penetrate through a steel structure of the fire-resistant lining layer 4 and fire-resistant bricks or a steel structure of the partition wall fire-resistant layer 16 and the fire-resistant bricks, so that the upper and lower layers of argon pipes 6 are arranged in a staggered mode;
the argon pipes 6 penetrate through the steel structure opening and then penetrate out of the refractory brick opening, so that the argon pipes 6 are arranged in the pouring layer, the argon pipes 6 cannot be crossed, and the blowing openings of the argon pipes 6 are divided into an upper layer and a lower layer which are arranged in a staggered mode.
S4, adopting a casting material to cast the outer wrapping fire-resistant layer 1, the side wall casting layer 14 and the partition wall casting layer 15, and adopting a vibrating rod to compact the material layer in the process of casting the outer wrapping fire-resistant layer 1, the side wall casting layer 14 and the partition wall casting layer 15;
pouring the outer-wrapped refractory layer 1, the side wall pouring layer 14 and the partition wall pouring layer 15 by adopting a stirred corundum spinel pouring material, inserting a plurality of vibrating rod compacting material layers in the process of pouring the outer-wrapped refractory layer 1, the side wall pouring layer 14 and the partition wall pouring layer 15, wherein the filling height of the castable of the outer fireproof layer 1 is 900-950 mm, the filling height of the side wall pouring layer 14 is flush with the side wall steel structure 2, the filling height of the partition wall pouring layer 15 is flush with the partition wall steel structure 3, the height of the partition wall steel structure 3 is 30-50 mm lower than the top of the dip pipe, so that a space of 30-50 mm is reserved between the partition wall pouring layer 15 and the top of the dip pipe, and when the dip pipe is connected with a vacuum chamber, the space is filled with ramming materials 13 for ramming, and then, refractory bricks are built in the middle of the circulating pipe, namely above the partition wall, so that the castable of the partition wall is protected from being corroded by molten steel, and the castable is prevented from expanding by heat to prop open the refractory bricks of the circulating pipe above the partition wall.
S5, curing the outer package fireproof layer 1, the side wall pouring layer 14 and the partition wall pouring layer 15, removing the tire mold until the pouring materials are solidified, and baking the dip pipe. Curing for 48 hours until the castable is completely solidified, removing the tire mold, baking the dip pipe according to the baking curve in the prior art, finishing the manufacture of the dip pipe, filling each gap with a ramming material 13 when the dip pipe is on line, aligning the partition wall to the refractory brick in the middle of the upper circulating pipe, and finally tightly welding the flange 5 and the steel structure at the bottom of the vacuum chamber together.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (8)
1. A dip pipe with a single pipe and double-hole structure comprises a riser and a downcomer, wherein the riser is composed of an arc-shaped inner wall on one side of a side wall of the dip pipe and a side wall surface of a middle partition wall, and the downcomer is composed of an arc-shaped inner wall on the other side of the side wall of the dip pipe and a side wall surface of the middle partition wall;
refractory inner liner and partition wall flame retardant coating are equallyd divide and are do not included the supreme three-layer of setting gradually down and are able to bear or endure firebrick, refractory inner liner's one side that is close to lateral wall pouring layer is provided with the recess, one side that is close to partition wall pouring layer is able to bear or endure firebrick of partition wall flame retardant coating also is provided with the recess.
2. The single-tube diplopore structure dip pipe of claim 1, characterized in that the refractory lining layer and the refractory layer of the partition wall are equally divided into three layers of refractory bricks which are sequentially arranged from bottom to top in the following specific arrangement modes: the lower floor of the fire-resistant inner liner layer is built by laying bricks one, the middle level and the upper strata of the fire-resistant inner liner layer are built by laying bricks two, the lower floor of the partition fire-resistant layer is built by laying bricks three, the middle level and the upper strata of the partition fire-resistant layer are built by laying bricks four, the lower floor of the fire-resistant inner liner layer and the lower floor of the partition fire-resistant layer are built by laying bricks five and six, the middle level and the upper level of the fire-resistant inner liner layer are built by laying bricks seven and eight with the middle level of the partition fire-resistant layer and the upper level respectively.
3. The single-pipe double-hole structure impregnation pipe as claimed in claim 2, wherein the side wall steel structure and the partition steel structure are provided with brick support rings and V-shaped anchors, and the lower part of the side wall steel structure is provided with a steel structure inclined surface inclined towards the inside of the impregnation pipe, the angle of inclination of the steel structure inclined surface towards the inside of the impregnation pipe is 25-35 °, and the height of the steel structure inclined surface is 100-150 mm.
4. The single-tube double-hole structure impregnation tube according to claim 3, wherein the refractory bricks at the lower layers of the refractory lining layer and the partition refractory layer are provided with clamping grooves matched with the brick supporting rings, and the refractory bricks at the lower layer of the refractory lining layer are also provided with refractory brick inclined surfaces corresponding to the steel structure inclined surfaces.
5. The single-pipe double-hole structure impregnation pipe according to any one of claims 1 to 4, wherein each refractory brick of the refractory lining layer and the partition refractory layer is made of fused magnesia-chrome bricks, and the heights of the refractory bricks are equal.
6. The single-pipe double-hole structure impregnation pipe according to any one of claims 1 to 4, wherein the outer-coated fire-resistant layer, the side wall casting layer and the partition wall casting layer are all cast by corundum spinel casting material, the thickness of the side wall casting layer and the thickness of the partition wall casting layer are both 30-40 mm, the height of the side wall casting layer is 30-50 mm higher than that of the partition wall casting layer, and the height of the outer-coated fire-resistant layer is 900-950 mm.
7. The single-tube double-hole structure impregnation tube of any one of claims 1 to 4, wherein the grooves are of a semi-elliptical structure horizontally arranged, the width of the grooves is 30 to 40mm, and the depth of the grooves is 30 to 40 mm.
8. The single-tube double-hole structure impregnation tube of any one of claims 1 to 4, wherein the lower portion of the rising tube is provided with a plurality of argon tubes having a diameter of 5 to 7mm for blowing a lift gas into the rising tube, and the argon tubes are provided in two layers, and the upper and lower argon tubes are alternately arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201922207599.7U CN211227215U (en) | 2019-12-10 | 2019-12-10 | Single-tube diplopore structure dip pipe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922207599.7U CN211227215U (en) | 2019-12-10 | 2019-12-10 | Single-tube diplopore structure dip pipe |
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| CN211227215U true CN211227215U (en) | 2020-08-11 |
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| CN201922207599.7U Active CN211227215U (en) | 2019-12-10 | 2019-12-10 | Single-tube diplopore structure dip pipe |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110863083A (en) * | 2019-12-10 | 2020-03-06 | 无锡东大汉森冶金实业有限公司 | Single-nozzle double-hole structure impregnation pipe and manufacturing method thereof |
| CN115354118A (en) * | 2022-09-06 | 2022-11-18 | 中冶南方工程技术有限公司 | RH vacuum refining device and method |
-
2019
- 2019-12-10 CN CN201922207599.7U patent/CN211227215U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110863083A (en) * | 2019-12-10 | 2020-03-06 | 无锡东大汉森冶金实业有限公司 | Single-nozzle double-hole structure impregnation pipe and manufacturing method thereof |
| CN110863083B (en) * | 2019-12-10 | 2024-03-26 | 苏州东大汉森冶金实业有限公司 | Single-tube double-hole structure dip pipe and manufacturing method thereof |
| CN115354118A (en) * | 2022-09-06 | 2022-11-18 | 中冶南方工程技术有限公司 | RH vacuum refining device and method |
| CN115354118B (en) * | 2022-09-06 | 2023-10-27 | 中冶南方工程技术有限公司 | RH vacuum refining device and method |
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