Long-service-life converter one-time dust removal flue structure

Abstract

The utility model relates to a converter one-time dust removal flue structure with long service life, which comprises a flue inner core, two groups of port parts and a flue shell, the two groups of port parts are symmetrically sleeved at two ends of the flue inner core, the port parts are fixedly connected with the flue inner core by bolts, the flue shell covers the outer side of the flue inner core, and the port parts are fixedly connected with the flue inner core by bolts. The flue shell is arranged between the two groups of port parts in a limited and fixed manner, a gap between the flue shell and the flue inner core forms a cooling chamber, the flue inner core comprises two symmetrical edge sections and a plurality of middle sections, and the plurality of middle sections are arranged between the two symmetrical edge sections. According to the utility model, through the arrangement of the flue inner core in the cooling chamber, flue gas can be conveyed in a shunting manner by using a plurality of runners after flowing in, so that the flue gas can be better subjected to heat conduction and cooling by using the flue inner core, and meanwhile, the fracture and deformation damage of the flue structure in the process of greatly changing the temperature can be reduced; and the service life of the flue structure is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of flue structures, in particular to a long-life converter primary dust removal flue structure. Background Art

[0002] The basic principle of dry dust removal of converter gas is to spray water to cool the high-temperature gas after passing through the vaporization flue, reduce the gas temperature from 900℃ to 100℃ to about 200℃, and then use an electrostatic precipitator for treatment.

[0003] In the converter primary dust removal flue structure, flue gas can be transported from the internal flue gas channel, and a cooling chamber is arranged on the outside of the flue gas channel. Cooling water is input into the cooling chamber to exchange heat with the flue gas channel and cool the flue gas.

[0004] In the above process, a large amount of high-temperature flue gas passes through the flue channel formed by the metal round tubes. Long-term high-temperature baking and large temperature changes will cause cracks in the metal round tubes forming the flue channel, and cause the cooling water in the cooling chamber to seep from the cracks, thereby shortening the service life of the flue structure and reducing its safety of use. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] The utility model provides a long-life converter primary dust removal flue structure, which solves the problem that the flue is easy to be damaged, thus shortening the service life of the flue and reducing the safety of use.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a long-life converter primary dust removal flue structure, comprising a flue inner core, two groups of port portions and a flue outer shell, the two groups of port portions are symmetrically arranged at the two ends of the flue inner core, and the port portions and the flue inner core are fixed by bolts, the flue outer shell cover is arranged on the outside of the flue inner core, and the flue outer shell is limited and fixedly arranged between the two groups of port portions, and the gap between the flue outer shell and the flue inner core forms a cooling chamber.

[0009] The flue core includes two symmetrical edge segments and a plurality of middle segments, the plurality of middle segments are arranged between the two symmetrical edge segments, and the two edge segments and the plurality of middle segments together form a cylindrical inner core, a plurality of flow channels are formed inside the cylindrical inner core, and the two ends of each flow channel respectively penetrate the upper and lower end surfaces of the cylindrical inner core;

[0010] Among them, the flue outer shell includes a first curved cover, a second curved cover, a water inlet and a drain outlet. The first curved cover and the second curved cover are symmetrically arranged on opposite sides of the flue inner core, and the first curved cover and the second curved cover are fixed between two groups of port portions by bolt connection. The water inlet and the drain outlet are both formed on the outer wall of the second curved cover, and the water inlet and the drain outlet are both communicated with the cooling chamber.

[0011] Preferably, the flue inner core further comprises two positioning grooves matched with the port portion, and the two positioning grooves are respectively formed at the upper end and the lower end of the cylindrical inner core.

[0012] It is further preferred that the port portion includes a sleeve, a positioning beam, two countersunk holes and a flange, the sleeve is sleeved at one end facing the cylindrical inner core, the positioning beam is fixedly connected to the inner side of the sleeve, and the positioning beam is embedded in the positioning groove, two countersunk holes are formed on the positioning beam, so that bolts pass through the countersunk holes and are connected and fixed to the cylindrical inner core, and the flange is formed at one end of the sleeve facing away from the cylindrical inner core.

[0013] It is further preferred that first corrugated grooves are formed on both opposite sides of the middle section, and the two first corrugated grooves on the middle section are staggered, a second corrugated groove is formed on the side of the edge section facing the middle section, a flow channel is formed between the first corrugated grooves, the second corrugated grooves and the adjacent first corrugated grooves on the facing surfaces of the two adjacent middle sections, a concave first groove is formed at the top center and the bottom center of the middle section, a concave second groove is formed at the top center and the bottom center of the edge section, a continuous positioning groove is formed between the first groove and the second groove located in the same plane, and a threaded hole matching the countersunk hole is formed at the center of the second groove.

[0014] It is further preferred that the long-life converter primary dust removal flue structure also includes two sealing rings, which are respectively inserted between the two groups of port portions and the flue casing, so that the port portions and the flue casing are sealed and connected.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the utility model provides a long-life converter primary dust removal flue structure, which has the following beneficial effects:

[0017] In the utility model, by disposing the flue core in the cooling chamber, the flue gas can be diverted and transported by utilizing multiple flow channels after flowing in, which can not only enable the flue gas to better utilize the heat conduction and cooling of the flue core, but also reduce the cracking and deformation damage of the flue structure during large temperature changes, thereby increasing the service life of the flue structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1It is a schematic diagram of the decomposed structure of the primary dust removal flue of a long-life converter according to the implementation scheme;

[0019] Figure 2 for Figure 1 Schematic diagram of the overall structure of the primary dust removal flue structure of a medium- and long-life converter;

[0020] Figure 3 It is a schematic diagram of the internal structure of the primary dust removal flue of a long-life converter according to the implementation scheme;

[0021] Figure 4 is a schematic diagram of the flue core structure according to the implementation scheme;

[0022] Figure 5 for Figure 4 A schematic diagram of the structure of the middle section of the flue core;

[0023] Figure 6 for Figure 4 A schematic diagram of the structure of the edge section of the flue core;

[0024] Figure 7 It is a schematic structural diagram of a port portion according to an implementation scheme.

[0025] In the figure, 10, the flue core; 11, the middle section; 110, the first corrugated groove; 111, the first groove; 12, the edge section; 120, the second corrugated groove; 121, the second groove; 122, the threaded hole; 13, the flow channel; 14, the positioning groove; 20, the port; 21, the casing; 22, the positioning beam; 23, the countersunk hole; 24, the flange; 30, the flue outer shell; 31, the first arc cover; 32, the second arc cover; 33, the water inlet; 34, the water outlet; 40, the sealing ring. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figures 1 to 3A long-life converter primary dust removal flue structure may include a flue core 10, two groups of port portions 20, a flue shell 30 and two sealing rings 40. During assembly, the flue core 10 is first inserted into the port portion 20 located below it, and then the flue core 10 and the corresponding port portion 20 are connected and fastened by bolts; then a sealing ring 40 is placed on the upper end of the port portion 20, and the first arc cover 31 and the second arc cover 32 in the flue shell 30 are placed on the upper end of the port portion 20 and the sealing ring 40 is pressed; then the first arc cover 31 and the second arc cover 32 are fastened by bolts through the first arc cover 31 and the second arc cover 32 and then matched with nuts; finally, the remaining sealing ring 40 is placed on the upper end of the flue shell 30 to complete the connection and fixation of the remaining port portion 20 with the flue core 10. The two groups of port portions 20 are symmetrically sleeved on both ends of the flue core 10, and are used for guiding the flue gas before and after cooling respectively. The flue shell 30 is disposed on the outside of the flue inner core 10, and the flue shell 30 is fixed between the two groups of port portions 20 by limiting the position of the two groups of port portions 20, and the flue shell 30 and the port portions 20 are sealed by a sealing ring 40. The gap between the flue shell 30 and the flue inner core 10 forms a cooling chamber, and the flue gas can be cooled by heat exchange between the cooling water continuously flowing in the cooling chamber and the flue inner core 10.

[0028] See also Figures 4 to 6 , the flue core 10 includes two symmetrical edge segments 12 and several middle segments 11. Both the edge segments 12 and the middle segments 11 can be cast by die-casting, so that they are not easy to break during the use of flue gas cooling. When assembling and connecting, several middle segments 11 are arranged between the two symmetrical edge segments 12, and the two edge segments 12 and several middle segments 11 together form a cylindrical core. A plurality of flow channels 13 are formed inside the cylindrical core, and the two ends of each flow channel 13 respectively penetrate the upper and lower end surfaces of the cylindrical core. The flue gas can flow by diverting the flow through the plurality of flow channels 13, so that the flue gas can be better cooled by the flue core 10 and the cooling water. The flue core 10 also includes two positioning grooves 14 that cooperate with the port portion 20. The two positioning grooves 14 are respectively formed at the upper end and the lower end of the cylindrical core, and the positioning grooves 14 are used to cooperate with the placement and connection assembly of the two groups of port portions 20.

[0029] In this embodiment, first corrugated grooves 110 may be formed on both opposite sides of the middle section 11, and the two first corrugated grooves 110 on the middle section 11 are staggered; a second corrugated groove 120 is formed on the side of the edge section 12 facing the middle section 11. A flow channel 13 may be formed between the first corrugated grooves 110 or the second corrugated grooves 120 on the facing surfaces of two adjacent middle sections 11 and the adjacent first corrugated grooves 110. The bent flow channel 13 may increase the time for heat exchange between the flue core 10 and the cooling water during the flue gas transportation process.

[0030] In this embodiment, a concave first groove 111 is formed at the top center and the bottom center of the middle section 11, and a concave second groove 121 is formed at the top center and the bottom center of the edge section 12. A positioning groove 14 is formed between the first groove 111 and the second groove 121 located in the same plane, and the positioning groove 14 is a groove continuous along the length direction. A threaded hole 122 that matches the countersunk hole 23 can also be formed at the center of the second groove 121 for matching assembly connection.

[0031] See also Figure 7 The port part 20 includes a casing 21, a positioning beam 22, two countersunk holes 23 and a flange 24. The positioning beam 22 is fixedly connected to the inner side of the casing 21. When the port part 20 is installed, the casing 21 is sleeved at one end thereof facing the cylindrical inner core, and the positioning beam 22 is embedded in the positioning groove 14 to position and limit the placement of the port part 20. Two countersunk holes 23 are formed on the positioning beam 22, so that the bolts passing through the countersunk holes 23 can be screwed into the threaded holes 122, so that the port part 20 is connected and fixed to the cylindrical inner core. The flange 24 is formed at one end of the casing 21 facing away from the cylindrical inner core, so that it is used to connect with an external pipe.

[0032] See also Figure 2 The flue shell 30 includes a first arc cover 31, a second arc cover 32, a water inlet 33 and a drain port 34. The first arc cover 31 and the second arc cover 32 are symmetrically arranged on opposite sides of the flue inner core 10, and the first arc cover 31 and the second arc cover 32 are connected and fixed by bolts and nuts and arranged between the two groups of port portions 20. The water inlet 33 and the drain port 34 are both formed on the outer wall of the second arc cover 32, and the water inlet 33 and the drain port 34 are both communicated with the cooling chamber, and cooling water can be input into the cooling chamber by the water inlet 33, and the water in the cooling chamber can be discharged outward by the drain port 34, so that the water in the cooling chamber keeps flowing and performs heat exchange with the cylindrical inner core.

[0033] In this embodiment, the first arc-shaped cover 31 and the second arc-shaped cover 32 may also be cast by die-casting, and in order to reduce deformation and damage of the first arc-shaped cover 31 and the second arc-shaped cover 32, reinforcing ribs may be provided on their outer walls.

[0034] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which are not described one by one here. In the above, all fixed connections are preferably welded. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A long-life converter primary dust removal flue structure, characterized in that: The invention comprises a flue core (10), two groups of port portions (20) and a flue shell (30), wherein the two groups of port portions (20) are symmetrically sleeved at two ends of the flue core (10), and the port portions (20) and the flue core (10) are connected and fixed by bolts, the flue shell (30) is covered on the outside of the flue core (10), and the flue shell (30) is fixedly arranged between the two groups of port portions (20), and the gap between the flue shell (30) and the flue core (10) forms a cooling chamber, The flue core (10) comprises two symmetrical edge segments (12) and a plurality of middle segments (11), wherein the plurality of middle segments (11) are arranged between the two symmetrical edge segments (12), and the two edge segments (12) and the plurality of middle segments (11) together form a cylindrical core, wherein a plurality of flow channels (13) are formed inside the cylindrical core, and the two ends of each flow channel (13) respectively penetrate the upper and lower end surfaces of the cylindrical core; The flue outer shell (30) comprises a first arc-shaped cover (31), a second arc-shaped cover (32), a water inlet (33) and a water outlet (34); the first arc-shaped cover (31) and the second arc-shaped cover (32) are symmetrically arranged on opposite sides of the flue inner core (10); the first arc-shaped cover (31) and the second arc-shaped cover (32) are fixedly connected between two groups of port portions (20) by bolts; the water inlet (33) and the water outlet (34) are both formed on the outer wall of the second arc-shaped cover (32); and the water inlet (33) and the water outlet (34) are both communicated with the cooling chamber.

2. A long-life converter primary dust removal flue structure according to claim 1, characterized in that: The flue inner core (10) further comprises two positioning grooves (14) matched with the port portion (20), and the two positioning grooves (14) are respectively formed at the upper end and the lower end of the cylindrical inner core.

3. A long-life converter primary dust removal flue structure according to claim 2, characterized in that: The port portion (20) comprises a sleeve (21), a positioning beam (22), two countersunk holes (23) and a flange (24); the sleeve (21) is sleeved on one end thereof facing the cylindrical inner core; the positioning beam (22) is fixedly connected to the inner side of the sleeve (21), and the positioning beam (22) is embedded in the positioning groove (14); the two countersunk holes (23) are formed on the positioning beam (22), so that bolts pass through the countersunk holes (23) to be connected and fixed to the cylindrical inner core; and the flange (24) is formed at one end of the sleeve (21) facing away from the cylindrical inner core.

4. A long-life converter primary dust removal flue structure according to claim 2 or 3, characterized in that: The middle section (11) is provided with first corrugated grooves (110) on opposite sides thereof, and the two first corrugated grooves (110) on the middle section (11) are staggered and distributed; the edge section (12) is provided with a second corrugated groove (120) on the side facing the middle section (11); and the first corrugated grooves (110) and the second corrugated grooves (120) on the facing surfaces of two adjacent middle sections (11) all enclose a flow channel (13) with the adjacent first corrugated grooves (110).

5. A long-life converter primary dust removal flue structure according to claim 4, characterized in that: A first concave groove (111) is formed at the top center and the bottom center of the middle section (11), and a second concave groove (121) is formed at the top center and the bottom center of the edge section (12). A continuous positioning groove (14) is formed between the first groove (111) and the second groove (121) located on the same plane, and a threaded hole (122) matching the countersunk hole (23) is formed at the center of the second groove (121).

6. The long-life converter primary dust removal flue structure according to claim 1 is characterized by: It also comprises two sealing rings (40), which are respectively inserted between the two groups of port portions (20) and the flue outer shell (30), so that the port portions (20) and the flue outer shell (30) are sealed and connected.

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