CN116164545A - Wear-resistant water cooling jacket in converter waste heat boiler feed opening device - Google Patents

Abstract

The invention discloses a wear-resistant water-cooled jacket in a converter waste heat boiler feed opening device, wherein water-cooled jackets with two open ends can be connected with a feed opening base arranged on a flue of a furnace opening section, the connected water-cooled jackets are in an inclined arrangement state, the bottom ends of shells of the water-cooled jackets extend into the feed opening, a plurality of storage grids for retaining and storing bulk materials are arranged on the inner walls of shells of areas where the water-cooled jackets are easy to wear, and the storage grids meet the following requirements: after the water-cooled jacket is connected with the blanking port base, bulk materials can be stored in the storage grids in the blanking process, and the inner wall of the shell in each storage grid can be covered by the bulk materials stored in the storage grid, so that the storage grid and the bulk materials stored in the storage grid jointly form a wear-resistant layer of an easily worn area on the inner wall of the shell of the water-cooled jacket. The wear-resistant layer covered on the easily worn area on the inner wall of the shell of the water-cooled jacket has good wear-resistant effect, thereby prolonging the service life of the water-cooled jacket in the feed opening device.

Description

Wear-resistant water cooling jacket in converter waste heat boiler feed opening device

Technical Field

The invention relates to the field of converter waste heat boilers, in particular to a water cooling jacket in a feed opening device of a converter waste heat boiler.

Background

The converter waste heat boiler is a flue type waste heat boiler and is widely applied to recovering heat in coal gas, high-temperature flue gas and smoke dust generated in converter steelmaking of a steel mill. The lower section of the furnace mouth section flue of the converter waste heat boiler is vertically arranged above the furnace mouth of the converter, a blanking mouth is arranged on the water-cooled wall of the lower section of the furnace mouth section flue, and a blanking mouth device is connected between the blanking mouth of the furnace mouth section flue and a blanking pipe for bulk materials to enter the converter. Because the position of the feed opening device is very close to the converter mouth, the feed opening device is not only influenced by heat radiation of high-temperature molten steel in smelting at the temperature of more than 1200 ℃, but also splashes such as slag liquid are attached to the feed opening device, so that a zone with the height of Wen Sanjiao is formed, and in the process that bulk raw materials such as scrap steel enter the converter through the feed opening, the feed opening device is always rubbed and impacted by the bulk raw materials, so that the use condition of the feed opening device is very bad.

The feed opening device slope sets up, is usually to be less than 35 contained angles setting between its and the water-cooled wall of stove mouth section flue hypomere, and the feed opening device that is commonly used at present includes: two end open-ended water cooling jacket, water cooling jacket and setting up the feed opening base on the water-cooled wall around the feed opening and can dismantle the connection, water cooling jacket includes: the hollow shell, the cooling water flows in the shell inner chamber, is provided with water inlet unit, the play water installation of communicating with shell inner chamber on the shell, the casing lower extreme stretches into in the feed opening. Because the feed opening device is generally obliquely arranged, after bulk materials enter the water cooling jacket from the feed pipe for conveying materials, the bulk materials can fall on the bottom inclined inner wall of the obliquely arranged shell, then enter the feed opening along the bottom inclined inner wall, and enter the converter through the lower section of the vertically arranged furnace opening section flue. The area of the inclined inner wall of the bottom of the housing that receives and transits the bulk material is generally referred to as the wearing zone. In order to improve the service life of the water cooling jacket, the inner wall of the easy-abrasion area is welded with an abrasion-resistant steel plate. However, even if the wear-resistant steel plate is welded, the phenomena of deformation, cracking and the like of the shell in the easily worn area still occur due to the impact and friction of bulk cargo within 1 year, the service life of the water cooling jacket in the feed opening device is greatly reduced, and the normal working period of converter steelmaking is correspondingly shorter due to shorter maintenance period.

Disclosure of Invention

The invention aims at: the wear-resistant water-cooled jacket for the converter waste heat boiler feed opening device has the advantages that the wear-resistant effect of the easily worn area on the inner wall of the shell of the water-cooled jacket is good, and therefore the service life of the water-cooled jacket in the feed opening device is prolonged.

In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: wear-resisting water-cooled jacket in converter exhaust-heat boiler feed opening device, both ends open-ended water-cooled jacket can be connected with the feed opening base of installing on the mouth section flue, and the water-cooled jacket after the connection is the slope and sets up the state, and in the casing bottom of water-cooled jacket stretched into the feed opening, be provided with a plurality of storage check that are used for detaining and accumulating the bulk cargo on the shells inner wall in the easy wearing and tearing region of water-cooled jacket, the storage check satisfies following requirement: after the water-cooled jacket is connected with the blanking port base, bulk materials can be stored in the storage grids in the blanking process, and the inner wall of the shell in each storage grid can be covered by the bulk materials stored in the storage grid, so that the storage grid and the bulk materials stored in the storage grid jointly form a wear-resistant layer of an easily worn area on the inner wall of the shell of the water-cooled jacket.

Further, the foregoing wear-resistant water-cooled jacket in converter exhaust-heat boiler feed opening device, wherein: the central generating line trend interval arrangement of side wall along the casing bottom is provided with a plurality of arcs, the bottom and the shells inner wall welding that correspond in the easy wearing and tearing region of every arc, the angle between the lateral wall of each arc and the shells inner wall of the easy wearing and tearing region of its top is the same, and is the acute angle, every interval arrangement is provided with a plurality of reinforcing plates between two adjacent arcs, each reinforcing plate all with the relative lateral wall of these two arcs, the shells inner wall welding in the easy wearing and tearing region that corresponds, thereby form a plurality of square grid shapes in the easy wearing and tearing region, be used for detaining and store the storage grid of bulk cargo.

Further, the foregoing wear-resistant water-cooled jacket in converter exhaust-heat boiler feed opening device, wherein: after each arc plate is welded with the inner wall of the shell in the easily-worn area, the area range of symmetrically expanding the first angle to two sides along the central bus at the bottom of the side wall of the shell is a first area, and the heights of the arc plates in the first area are consistent; and continuing to expand from the edge of the first area to two sides, wherein the height of each arc-shaped plate gradually becomes smaller along the expanding direction.

Further, the foregoing wear-resistant water-cooled jacket in converter exhaust-heat boiler feed opening device, wherein: after the water cooling jacket is connected with the blanking port base, the arc plate is vertically arranged, the included angle range between the arc plate and the shell inner wall of the corresponding easily worn area is 25-30 degrees, the range of the first angle is 62-65 degrees, the areas which are respectively and symmetrically expanded by 75-100 degrees to the two sides along the central generatrix of the side wall of the bottom of the shell are easily worn areas, the vertical height range of the arc plate in the first area is 75-85mm, and the vertical height of the arc plate outside the first area gradually reduces to half of the vertical height of the arc plate on the first area to the two sides.

Further, the foregoing wear-resistant water-cooled jacket in converter exhaust-heat boiler feed opening device, wherein: the shape of the reinforcing plate satisfies the following requirements: the reinforcing plate is a quadrangular plate and is provided with four vertex angles, after the reinforcing plate is clamped between two adjacent arc plates, the reinforcing plate is provided with three vertex angles which are respectively in contact with the opposite side walls of the two arc plates and the inner wall of the shell of the corresponding easily-worn area, and then the corresponding three side walls of the reinforcing plate are respectively welded with the opposite side walls of the two arc plates and the inner wall of the shell of the corresponding easily-worn area in a full-welding mode.

Further, the foregoing wear-resistant water-cooled jacket in converter exhaust-heat boiler feed opening device, wherein: the angle between two lower side walls of the reinforcing plate is an acute angle, the lengths of the two lower side walls are the same, the angle between two upper side walls of the reinforcing plate is also an acute angle, the lengths of the two upper side walls are the same, and the vertex angle of the reinforcing plate, which is contacted with the inner wall of the shell in the easily-worn area, and the diagonal connecting line of the diagonal vertex angle of the reinforcing plate are perpendicular to the inner wall of the shell in the corresponding storage grid.

Further, the foregoing wear-resistant water-cooled jacket in converter exhaust-heat boiler feed opening device, wherein: be provided with oval flange on the water-cooling jacket casing, be provided with vertical oval flange on the outer port of feed opening base, the water-cooling jacket can dismantle the back of being connected through two oval flange and feed opening base, oval flange vertical setting on the water-cooling jacket.

Further, the foregoing wear-resistant water-cooled jacket in converter exhaust-heat boiler feed opening device, wherein: the water cooling jacket comprises: the utility model provides a water inlet pipe, go out water bounding wall, interior water bounding wall, the annular water inlet chamber that first flange encloses, be provided with the water inlet connecting pipe on the outer water bounding wall, by first flange, go out water bounding wall, interior water bounding wall, the annular water outlet chamber that the second flange encloses, annular water outlet chamber is located the below of annular water inlet chamber, be provided with out the water connecting pipe on the water bounding wall that goes out, set up a plurality of first through-hole along circumference interval on the first flange, be provided with a plurality of second through-hole along circumference interval on the second flange, the bore of second through-hole is greater than the bore of first through-hole, the quantity and the first through-hole of second through-hole are the same, and upper and lower one-to-one correspondence, cartridge and sealing connection have a both ends open-ended inlet tube in each first through-hole, each inlet tube all communicates with annular water inlet chamber, each inlet tube downwards passes annular water outlet chamber, and all the cover of each inlet tube periphery that stretches out annular water outlet chamber is equipped with a bottom closing cap is equipped with the heated tube, all have the clearance between every inlet tube and the corresponding tube, the opening end of every heated tube is fixed on the second through-hole, and the annular flange is connected through two adjacent circular inner wall that the annular flange and the annular water outlet pipe is connected between two adjacent heated tube through the welding, the sealed connection: the inner side walls of the heat receiving pipes are circumferentially arranged and connected in a sealing mode, and the inner side walls of the round bars, the inner cavity wall of the annular water inlet cavity and the inner cavity wall of the annular water outlet cavity are welded.

Further, the foregoing wear-resistant water-cooled jacket in converter exhaust-heat boiler feed opening device, wherein: the bottom port of each heated pipe is through the pipe cap closing cap with heated pipe bottom port welded, the inside wall of each pipe cap all welds on the arc abrasionproof steel sheet that the slope set up, the angle of inclination of abrasionproof steel sheet is the same with the inclination of water jacket, the radian of abrasionproof steel sheet is the same with the radian in easy wearing and tearing region, its lower extreme is located pipe cap oblique below, its upper end and the inside wall lower extreme of the heated pipe in the easy wearing and tearing region, the inside wall lower extreme sealing welding of welding round bar, the storage grid extends to on the abrasionproof steel sheet for also can cover the bulk cargo on the inner wall of abrasionproof steel sheet, during the bulk cargo unloading like this, the pipe cap can be protected better.

Further, the foregoing wear-resistant water-cooled jacket in converter exhaust-heat boiler feed opening device, wherein: the annular flange is also provided with an upper connecting cylinder which can be detachably connected with the blanking pipe, the upper end and the lower end of the upper connecting cylinder are provided with openings, the lower end of the upper connecting cylinder is in sealing butt joint with the upper end of the water cooling jacket, and the caliber of the inner cavity of the upper connecting cylinder is gradually reduced from top to bottom.

The beneficial effects of the invention are as follows: 1. the inner wall of the shell of the easily worn area of the water-cooling jacket shell is provided with a plurality of storage grids for retaining and storing bulk materials, so that the inner wall of the shell in each storage grid is covered by the bulk materials stored in the storage grid, the storage grids themselves and the bulk materials stored in the storage grids form a wear-resistant layer on the inner wall of the shell of the easily worn area, and the bulk materials retained in each storage grid can buffer the bulk materials falling subsequently, so that the inner wall of the easily worn area can be better protected in the bulk material feeding process, and the bulk materials in the storage grids can be subjected to new and old alternation phenomenon in the bulk material feeding process, so that the wear-resistant effect of the water-cooling jacket provided with the storage grids is better, and the service life of the water-cooling jacket can reach 3 years. 2. The invention has the further advantages that: a plurality of arc plates are arranged in the easily-worn area of the water-cooled jacket shell along the trend of the central bus of the side wall of the bottom of the shell at intervals, and a plurality of reinforcing plates are arranged between every two adjacent arc plates at intervals, so that a plurality of storage grids which are in a four-square grid shape and are used for storing bulk materials are formed in the easily-worn area, and the storage grid with the structure is convenient to manufacture. 3. The invention has the further advantages that: the easy-to-wear areas which are symmetrically expanded to the two sides along the central generatrix of the side wall at the bottom of the shell are first areas, the heights of the arc plates positioned in the first areas are consistent, the heights of the arc plates gradually decrease along the expanding direction in the expanding process from the edges of the first areas, the arc plates of the structure enable the thickness of the wear-resistant layer covered on the inner wall of the shell in the first areas and formed by the arc plates, the reinforcing plates and the bulk cargo in the storage grid to be maximum, and the thickness of the wear-resistant layer gradually decreases in the expanding process from the edges of the first areas to the two sides, so that the wear-resistant water-cooling jacket adapts to the friction probability between the bulk cargo falling and each area in the easy-to-wear areas, and the manufacturing cost of the wear-resistant water-cooling jacket is reduced.

Drawings

FIG. 1 is a schematic diagram of a structure of a converter waste heat boiler feed opening device in which a wear-resistant water-cooled jacket is connected with a feed opening base;

FIG. 2 is an enlarged schematic view of the portion A in FIG. 1;

FIG. 3 is a schematic view of a partial enlarged structure of the water jacket of FIG. 1;

FIG. 4 is a schematic view of the structure in the E-E direction in FIG. 1;

FIG. 5 is a schematic top view of a horizontally disposed arcuate plate;

FIG. 6 is a schematic view of an oval connecting flange;

fig. 7 is a schematic structural view of the reinforcing plate.

Detailed Description

The technical scheme of the invention is further described below with reference to the attached drawings and the preferred embodiments.

As shown in fig. 1, fig. 2, fig. 4, fig. 5 and fig. 7, a wear-resistant water-cooling jacket in a converter waste heat boiler feed opening device, a water-cooling jacket 1 with two open ends can be detachably connected with a feed opening base 2 arranged on a furnace opening section flue water-cooling wall 6, the water-cooling jacket 1 connected with the feed opening base 2 is in an inclined arrangement state, in this embodiment, the included angle between the water-cooling wall 6 of the furnace opening section flue lower section and a shell 11 of the water-cooling jacket ranges from 25 degrees to 30 degrees, the bottom end of the shell 11 of the water-cooling jacket stretches into a feed opening 9, a plurality of storage grids 12 for retaining and accumulating bulk materials are arranged on the shell inner wall 13 of a water-cooling jacket easy-wear area, and the storage grids 12 meet the following requirements: after the water-cooled jacket 1 is connected with the blanking mouth base 2, bulk materials can be stored in the storage grids 12 in the blanking process, and the inner wall 13 of the shell in each storage grid 12 can be covered by the bulk materials stored in the storage grids 12, so that the storage grids 12 and the bulk materials stored in the storage grids 12 jointly form a wear-resistant layer of an easily worn area on the inner wall 13 of the water-cooled jacket shell.

In this embodiment, a plurality of arc plates 3 are arranged on the inner wall 13 of the shell in the wearing area along the trend interval of the central bus of the side wall at the bottom of the shell 11, the bottom end of each arc plate 3 is welded with the inner wall 13 of the shell corresponding to the wearing area, the angle α between the side wall of each arc plate 3 and the inner wall 13 of the shell in the wearing area above the arc plates is the same, the angle α is acute, a plurality of reinforcing plates 4 are arranged between every two upper and lower adjacent arc plates 3 at intervals, each reinforcing plate 4 is welded with the opposite side walls of the two arc plates 3 and the inner wall 13 of the shell in the corresponding wearing area, so that a plurality of four-square-grid-shaped storage lattices 12 for retaining and storing bulk materials are formed in the wearing area, in operation, when the bulk materials in a certain thickness are covered on the inner wall 13 of the shell in each storage lattice 12 in the wearing area, the subsequent bulk materials can only contact and rub with the top ends of the arc plates 3, the top ends of the reinforcing plates 4 and the bulk materials in the storage lattice 12, in the process, the bulk materials stored in each storage lattice 12 can easily fall down to form a new layer of the bulk materials in the shell, the wear-resistant area, the bulk materials can be better, and the wear-resistant material can be prevented from entering the inner wall 13 in the shell 13 in the wearing area, and the wearing area is better, and the wear-resistant layer is formed by the inner wall 13 in the storage lattice is formed, and the bulk materials can be better worn down well in the storage lattice 13.

In the present embodiment, the shape of each arc plate 3 satisfies the following requirements: after the water cooling jacket 1 is connected with the blanking port base 2, the heights of the arc plates 3 in the easily-worn area range of the first angle gamma are respectively and symmetrically expanded to the two sides along the central generatrix of the side wall of the bottom of the shell 11; continuing to spread from the edge of the area to both sides, the height of the arcuate plate 3 becomes gradually smaller in the direction of the spread. For convenience of description, the easily worn areas symmetrically extending to both sides along the central generatrix of the bottom sidewall of the housing 11 are referred to as first areas, and in actual use, the range of the first angle γ is 62 ° to 65 °, i.e., the angular range of the first area is 124 ° to 130 °, and the easily worn areas are generally disposed in the areas symmetrically extending to both sides along the central generatrix of the bottom sidewall of the housing 11 by 75 ° to 100 °, i.e., the angular range of the easily worn areas is 150 ° to 200 °. It can be seen that the thickness of the wear-resistant layer formed by the arc plate 3, the reinforcing plate 4 and the bulk material in the storage grid 12, which is covered on the inner wall 13 of the shell of the first region, is maximum, and the wear-resistant layer continuously expands to two sides from the edge of the first region, and gradually becomes smaller. Because the water-cooled jacket 1 is in an inclined state, the probability that the wear-resistant layer covered on the inner wall 13 of the shell in the first area contacts with the entering bulk material is maximum, so that the thickness of the wear-resistant layer in the first area is thickest, and the longer the distance between the positions of the wear-resistant layers in the easily-worn areas on two sides of the first area and the central bus of the side wall at the bottom of the shell 11 is, the smaller the probability that the wear-resistant layers contact with the entering bulk material is, so that the thickness of the wear-resistant layers gradually becomes thinner from the edge of the first area to two sides.

In this embodiment, after the water cooling jacket 1 is detachably connected with the blanking port base 2, the arc plate 3 is vertically arranged, so that the included angle alpha between the arc plate 3 and the shell inner wall 13 of the corresponding easily worn area is 25 ° to 30 °, the arc plate 3 is also an elliptical arc plate, the radian range of the elliptical arc is 150 ° to 200 °, the vertical height range of the arc plate 3 on the first area is 75 to 85mm, and the vertical height of the arc plate 3 outside the first area gradually decreases to half of the vertical height of the arc plate 3 on the first area to two sides. In actual manufacturing, the distance between two adjacent arc plates 3 is 40-50mm, and the distance between every two adjacent reinforcing plates arranged between two adjacent arc plates 3 is 40-50 mm. The service life of the water cooling jacket 1 with the structure is longer than that of a water cooling jacket in a common feed opening device and can reach 3 years.

As shown in fig. 2 and 7, the reinforcing plate 4 has a shape satisfying the following requirements: the reinforcing plate 4 is a quadrangular plate, and is provided with 4 vertex angles 41, after the reinforcing plate 4 is clamped between two adjacent arc plates 3, the reinforcing plate 4 is provided with three vertex angles 41 which are respectively contacted with the opposite side walls of the two arc plates 3 and the corresponding shell inner walls 13 in the easily-worn areas, and then the corresponding three side walls 42 of the reinforcing plate 4 are respectively welded with the opposite side walls of the two arc plates 3 and the corresponding shell inner walls 13 in the easily-worn areas in a full-welded manner, so that the quadrangular reinforcing plate 4 with the structure ensures the welding reliability between the quadrangular reinforcing plate and the shell inner walls 13 and between the quadrangular reinforcing plate 4 and the two arc plates 3. In practical use, the angle between the two lower side walls of the reinforcing plate 4 is an acute angle, the lengths of the two lower side walls are the same, the angle between the two upper side walls of the reinforcing plate 4 is also an acute angle, the lengths of the two upper side walls are the same and are larger than the lengths of the lower side walls, the vertex angle of the reinforcing plate 4, which is in contact with the shell inner wall 13 of the easy-wear area, and the diagonal connecting line 43 of the diagonal angle of the reinforcing plate are perpendicular to the shell inner wall 13 in the corresponding storage grid 12, and the reinforcing plate 4 in the shape is not easy to deform after being impacted by bulk materials with the opposite side walls of the two arc plates 3 and the side walls of the storage grid 12 formed after the shell inner wall 13 are welded in full.

As shown in fig. 1 and 6, an oval connecting flange 5 is arranged on the shell of the water cooling jacket, a vertical oval connecting flange 21 is arranged on the outer port of the blanking port base 2, and the oval connecting flange 5 on the water cooling jacket is also vertically arranged after the water cooling jacket is detachably connected with the blanking port base 2 through the two oval connecting flanges.

As shown in fig. 1 and 3, the water jacket comprises: an annular water inlet cavity 721 surrounded by an annular flange 7, an outer water inlet surrounding plate 711, an inner water inlet surrounding plate 712 and a first flange 72, a water inlet connecting pipe 713 is arranged on the outer water inlet surrounding plate 711, an annular water outlet cavity 742 surrounded by the first flange 72, an outer water outlet surrounding plate 731, an inner water outlet surrounding plate 732 and a second flange 74, the annular water outlet cavity 742 is positioned below the annular water inlet cavity 721, a water outlet connecting pipe 733 is arranged on the outer water outlet surrounding plate 731, a plurality of first through holes are circumferentially arranged on the first flange 72 at intervals, a plurality of second through holes 741 are circumferentially arranged on the second flange 74 at intervals, the caliber of the second through holes 741 is larger than that of the first through holes, the number of the second through holes 741 is the same as that of the first through holes and corresponds to each other up and down, each first through hole is inserted with a water inlet pipe 75 with two open ends, the water inlet of each water inlet pipe 75 is communicated with the annular water inlet cavity 721, each water inlet pipe 75 downwards passes through the annular water outlet cavity 742 and downwards extends out through the corresponding second through hole 741, the periphery of each water inlet pipe 75 extending out of the annular water outlet cavity is sleeved with a heat receiving pipe 76 with a bottom end cover, a gap is reserved between each water inlet pipe and the corresponding heat receiving pipe 76 of each water inlet pipe and 75, the open end of each heat receiving pipe 76 is fixed on the second flange 74 and communicated with the annular water outlet cavity 742 through the corresponding second through hole 741, each two adjacent heat receiving pipes 76 are welded in a sealing way through a welding round strip 77 which is embedded and welded between the inner side walls of the two heat receiving pipes 76, and therefore the inner wall 13 of the shell of the water cooling jacket comprises: the inner side walls of the heated pipes 76, the inner side walls of the circular strips 77, the inner cavity wall of the annular water inlet cavity 721 and the inner cavity wall of the annular water outlet cavity 741 are welded in a circumferential arrangement and are in sealing connection. In this embodiment, the bottom end opening of each heat receiving pipe 76 is covered by a pipe cap 78 welded to the bottom end opening of the heated pipe, since the inner side wall of the pipe cap 78 is arc-shaped, in order to better set the storage grid 12, the inner side wall of each pipe cap 78 is welded to an arc-shaped anti-wear steel plate 79 which is obliquely arranged, the inclined angle of the anti-wear steel plate 79 is the same as that of the water cooling jacket 1, the radian of the anti-wear steel plate 79 is the same as that of the easily worn area, the lower end of the anti-wear steel plate 79 is positioned obliquely below the pipe cap 78, the upper end of the anti-wear steel plate 79 is welded with the lower end of the inner side wall of the heat receiving pipe 76 in the easily worn area and the lower end of the inner side wall of the welding round bar 77 in a sealing manner, and the storage grid extends to the anti-wear steel plate 79, so that the inner wall of the anti-wear steel plate 79 can be covered with bulk materials.

In this embodiment, the annular flange 7 is further provided with an upper connecting cylinder 8 detachably connected with the blanking pipe, the upper end and the lower end of the upper connecting cylinder 8 are opened, the lower end of the upper connecting cylinder is in sealed butt joint with the annular flange 7, the bore of the inner cavity of the upper connecting cylinder 8 is gradually reduced from top to bottom, and the upper connecting cylinder 8 in the shape is convenient for bulk cargo in the blanking pipe to enter the water cooling jacket.

The flow of the cooling water of the invention is as follows: the cooling water enters the annular water inlet cavity 721 from each water inlet connection pipe 713, then enters each water inlet pipe 75, flows downwards out of the water inlet pipe 75, then flows upwards from the gap between each water inlet pipe 75 and the corresponding heated pipe 76, then flows into the annular water outlet cavity 742 through the corresponding second through hole 741, and finally is output from each water outlet connection pipe 733.

The invention has the advantages that: 1. the inner wall of the shell of the easily worn area of the water-cooling jacket shell is provided with a plurality of storage grids 12 for retaining and storing bulk materials, so that the inner wall 13 of each storage grid 12 is covered by the bulk materials stored in the storage grid, the storage grids 12 themselves and the bulk materials stored in the storage grids 12 form a wear-resistant layer on the inner wall of the easily worn area, and the bulk materials retained and stored in each storage grid 12 can buffer the bulk materials falling down subsequently, so that the inner wall 13 of the easily worn area can be better protected in the bulk material feeding process, and the bulk materials in the storage grids 12 can be subjected to new and old alternation phenomenon in the bulk material feeding process, so that the wear-resistant effect of the water-cooling jacket provided with the storage grids 12 is better, and the service life of the water-cooling jacket can reach 3 years. 2. The invention has the further advantages that: a plurality of arc plates 3 are arranged at intervals along the trend of a central bus of the side wall of the bottom of the shell 11 in the easily-worn area of the water-cooled jacket shell, and a plurality of reinforcing plates 4 are arranged between every two adjacent arc plates 3 at intervals, so that a plurality of storage grids 12 which are in a four-grid shape and are used for storing bulk materials are formed in the easily-worn area, and the storage grids 12 with the structure are convenient to manufacture. 3. The invention has the further advantages that: the easily worn areas which are symmetrically expanded to the two sides along the central generatrix of the side wall at the bottom of the shell 11 are first areas, the heights of the arc plates 3 positioned in the first areas are consistent, the heights of the arc plates 3 gradually decrease along the expanding direction in the process of expanding from the edges of the first areas to the two sides, the arc plates 3 with the structure enable the thickness of the wear-resistant layer formed by the arc plates 3, the reinforcing plates 4 and the bulk materials in the storage grid 12 covered on the inner wall 13 of the shell in the first areas to be maximum, and the thickness of the wear-resistant layer gradually decreases in the process of expanding from the edges of the first areas to the two sides, so that the wear-resistant water jacket adapts to the friction probability between the bulk materials in the areas when falling down and the easily worn areas, and reduces the manufacturing cost of the wear-resistant water jacket.

Claims (10)

1. Wear-resisting water-cooled jacket in converter exhaust-heat boiler feed opening device, both ends open-ended water-cooled jacket can be connected with the feed opening base of installing on the mouth section flue, and the water-cooled jacket after the connection is slope setting state, and in the casing bottom of water-cooled jacket stretched into the feed opening, its characterized in that: the shell inner wall of the water-cooling jacket easy-wear area is provided with a plurality of storage grids for retaining and storing bulk materials, and the storage grids meet the following requirements: after the water-cooled jacket is connected with the blanking port base, bulk materials can be stored in the storage grids in the blanking process, and the inner wall of the shell in each storage grid can be covered by the bulk materials stored in the storage grid, so that the storage grid and the bulk materials stored in the storage grid jointly form a wear-resistant layer of an easily worn area on the inner wall of the shell of the water-cooled jacket.

2. The wear-resistant water-cooled jacket in a converter waste heat boiler feed opening device according to claim 1, wherein: the central generating line trend interval arrangement of side wall along the casing bottom is provided with a plurality of arcs, the bottom and the shells inner wall welding that correspond in the easy wearing and tearing region of every arc, the angle between the lateral wall of each arc and the shells inner wall of the easy wearing and tearing region of its top is the same, and is the acute angle, every interval arrangement is provided with a plurality of reinforcing plates between two adjacent arcs, each reinforcing plate all with the relative lateral wall of these two arcs, the shells inner wall welding in the easy wearing and tearing region that corresponds, thereby form a plurality of square grid shapes in the easy wearing and tearing region, be used for detaining and store the storage grid of bulk cargo.

3. The wear-resistant water-cooled jacket in a converter waste heat boiler feed opening device according to claim 2, characterized in that: after each arc plate is welded with the inner wall of the shell in the easily-worn area, the area range of symmetrically expanding the first angle to two sides along the central bus at the bottom of the side wall of the shell is a first area, and the heights of the arc plates in the first area are consistent; and continuing to expand from the edge of the first area to two sides, wherein the height of each arc-shaped plate gradually becomes smaller along the expanding direction.

4. A wear resistant water jacket in a converter waste heat boiler feed opening apparatus as set forth in claim 3, wherein: after the water cooling jacket is connected with the blanking port base, the arc plate is vertically arranged, the included angle range between the arc plate and the shell inner wall of the corresponding easily worn area is 25-30 degrees, the range of the first angle is 62-65 degrees, the areas which are respectively and symmetrically expanded by 75-100 degrees to the two sides along the central generatrix of the side wall of the bottom of the shell are easily worn areas, the vertical height range of the arc plate in the first area is 75-85mm, and the vertical height of the arc plate outside the first area gradually reduces to half of the vertical height of the arc plate on the first area to the two sides.

5. A wear resistant water jacket in a converter waste heat boiler feed opening apparatus as claimed in claim 2 or 3 or 4, wherein: the shape of the reinforcing plate satisfies the following requirements: the reinforcing plate is a quadrangular plate and is provided with four vertex angles, after the reinforcing plate is clamped between two adjacent arc plates, the reinforcing plate is provided with three vertex angles which are respectively in contact with the opposite side walls of the two arc plates and the inner wall of the shell of the corresponding easily-worn area, and then the corresponding three side walls of the reinforcing plate are respectively welded with the opposite side walls of the two arc plates and the inner wall of the shell of the corresponding easily-worn area in a full-welding mode.

6. The wear-resistant water-cooled jacket in a converter waste heat boiler feed opening device according to claim 5, wherein: the angle between two lower side walls of the reinforcing plate is an acute angle, the lengths of the two lower side walls are the same, the angle between two upper side walls of the reinforcing plate is also an acute angle, the lengths of the two upper side walls are the same, and the vertex angle of the reinforcing plate, which is contacted with the inner wall of the shell in the easily-worn area, and the diagonal connecting line of the diagonal vertex angle of the reinforcing plate are perpendicular to the inner wall of the shell in the corresponding storage grid.

7. A wear resistant water jacket in a converter waste heat boiler feed opening apparatus according to claim 1 or 2 or 3 or 4, characterized in that: be provided with oval flange on the water-cooling jacket casing, be provided with vertical oval flange on the outer port of feed opening base, the water-cooling jacket can dismantle the back of being connected through two oval flange and feed opening base, oval flange vertical setting on the water-cooling jacket.

8. A wear resistant water jacket in a converter waste heat boiler feed opening apparatus according to claim 1 or 2 or 3 or 4, characterized in that: the water cooling jacket comprises: the utility model provides a water inlet pipe, go out water bounding wall, interior water bounding wall, the annular water inlet chamber that first flange encloses, be provided with the water inlet connecting pipe on the outer water bounding wall, by first flange, go out water bounding wall, interior water bounding wall, the annular water outlet chamber that the second flange encloses, annular water outlet chamber is located the below of annular water inlet chamber, be provided with out the water connecting pipe on the water bounding wall that goes out, set up a plurality of first through-hole along circumference interval on the first flange, be provided with a plurality of second through-hole along circumference interval on the second flange, the bore of second through-hole is greater than the bore of first through-hole, the quantity and the first through-hole of second through-hole are the same, and upper and lower one-to-one correspondence, cartridge and sealing connection have a both ends open-ended inlet tube in each first through-hole, each inlet tube all communicates with annular water inlet chamber, each inlet tube downwards passes annular water outlet chamber, and all the cover of each inlet tube periphery that stretches out annular water outlet chamber is equipped with a bottom closing cap is equipped with the heated tube, all have the clearance between every inlet tube and the corresponding tube, the opening end of every heated tube is fixed on the second through-hole, and the annular flange is connected through two adjacent circular inner wall that the annular flange and the annular water outlet pipe is connected between two adjacent heated tube through the welding, the sealed connection: the inner side walls of the heat receiving pipes are circumferentially arranged and connected in a sealing mode, and the inner side walls of the round bars, the inner cavity wall of the annular water inlet cavity and the inner cavity wall of the annular water outlet cavity are welded.

9. The wear-resistant water-cooled jacket in a converter waste heat boiler feed opening device according to claim 8, wherein: the bottom port of each heated pipe is through the pipe cap closing cap with heated pipe bottom port welded, the inside wall of each pipe cap all welds on the arc abrasionproof steel sheet that the slope set up, the angle of inclination of abrasionproof steel sheet is the same with the inclination of water jacket, the radian of abrasionproof steel sheet is the same with the radian in easy wearing and tearing region, its lower extreme is located pipe cap oblique below, its upper end and the inside wall lower extreme of the heated pipe in the easy wearing and tearing region, the inside wall lower extreme sealing welding of welding round bar, the storage grid extends to on the abrasionproof steel sheet for also can cover the bulk cargo on the inner wall of abrasionproof steel sheet, during the bulk cargo unloading like this, the pipe cap can be protected better.

10. A wear resistant water jacket in a converter waste heat boiler feed opening apparatus according to claim 1 or 2 or 3 or 4, characterized in that: the annular flange is also provided with an upper connecting cylinder which can be detachably connected with the blanking pipe, the upper end and the lower end of the upper connecting cylinder are provided with openings, the lower end of the upper connecting cylinder is in sealing butt joint with the upper end of the water cooling jacket, and the caliber of the inner cavity of the upper connecting cylinder is gradually reduced from top to bottom.

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