CN107841589B - Rotary flue device - Google Patents
Rotary flue device Download PDFInfo
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- CN107841589B CN107841589B CN201711153954.6A CN201711153954A CN107841589B CN 107841589 B CN107841589 B CN 107841589B CN 201711153954 A CN201711153954 A CN 201711153954A CN 107841589 B CN107841589 B CN 107841589B
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- spiral cylinder
- air flow
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 54
- 239000003546 flue gas Substances 0.000 claims abstract description 54
- 238000004880 explosion Methods 0.000 claims abstract description 31
- 238000013022 venting Methods 0.000 claims abstract description 26
- 238000005422 blasting Methods 0.000 claims description 27
- 238000007789 sealing Methods 0.000 claims description 17
- 239000010410 layer Substances 0.000 claims description 10
- 230000007704 transition Effects 0.000 claims description 10
- 230000009471 action Effects 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 5
- 230000005484 gravity Effects 0.000 claims description 5
- 239000011261 inert gas Substances 0.000 claims description 4
- 239000011247 coating layer Substances 0.000 claims description 3
- 238000005299 abrasion Methods 0.000 claims description 2
- 239000000428 dust Substances 0.000 abstract description 16
- 238000009628 steelmaking Methods 0.000 abstract description 7
- 239000003500 flue dust Substances 0.000 abstract description 4
- 239000000779 smoke Substances 0.000 description 17
- 239000002245 particle Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000011010 flushing procedure Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000009172 bursting Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000011162 core material Substances 0.000 description 2
- 238000005338 heat storage Methods 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 229920006255 plastic film Polymers 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/42—Constructional features of converters
- C21C5/46—Details or accessories
- C21C5/4646—Cooling arrangements
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/38—Removal of waste gases or dust
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Chimneys And Flues (AREA)
- Safety Valves (AREA)
Abstract
The application discloses a rotary flue device which comprises a spiral cylinder body (21), wherein the spiral cylinder body (21) is connected with an ash collecting hopper (24) and an explosion venting valve (27), the ash collecting hopper (24) and the explosion venting valve (27) are positioned outside the spiral cylinder body (21), the ash collecting hopper (24) is positioned at the lower part of the spiral cylinder body (21), and a wear-resisting layer (22) is arranged on the inner surface of the spiral cylinder body (21). The rotary flue device can effectively dry separate dust in converter steelmaking flue gas, and has great practical significance and commercial value in the field of comprehensive utilization of converter steelmaking flue gas and dust.
Description
Technical Field
The application relates to the field of smoke dust recovery equipment, in particular to a rotary flue device.
Background
In the gas dust removal system at present, a cyclone separator is widely applied as an effective technology of centrifugal separation technology, and has the advantages of mature technology, large treatment flow and strong high-temperature adaptability, but also has the weaknesses of high resistance (about 1500 Pa) and the like.
In the metallurgical industry, a great amount of high-temperature flue gas and dust are generated during converter steelmaking, and the high-temperature flue gas and dust enter a rotary flue device after being cooled by a flue. The high-temperature flue gas and dust of converter steelmaking have great value, but factors such as the blasting characteristic of the flue gas, the high-temperature abrasion of the dust and the like prevent the recovery of the value.
Disclosure of Invention
In order to recycle dust particles in the flue gas, the application provides a rotary flue device which can effectively dry-separate dust in the flue gas for converter steelmaking and has great practical significance and commercial value in the field of comprehensive utilization of the flue gas and the dust for converter steelmaking.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides a rotatory flue device, includes the spiral barrel, and the spiral barrel is connected with album ash bucket and lets out and explodes the valve, and album ash bucket and let out and explode the valve and be located the spiral barrel outside, album ash bucket is located the lower part of spiral barrel, and the internal surface of spiral barrel is equipped with the wearing layer.
The upper end of the spiral cylinder is provided with a smoke inlet, the lower end of the spiral cylinder is provided with a smoke outlet, the explosion venting valve is arranged at the upper part of the spiral cylinder, the lower end of the ash collecting hopper is provided with an ash discharging hole, the inner side or the outer side of the spiral cylinder is provided with a supporting structure, and the inside of the spiral cylinder is provided with a heat accumulator capable of storing heat.
The section of the spiral cylinder body is in an upright state, the pentagon comprises an outer side, an upper side, an inner side, a lower side and an inclined side which are sequentially connected, the outer side and the inner side are all arranged in the vertical direction, the upper side and the lower side are all arranged in the horizontal direction, the width of the lower side is smaller than that of the upper side, and the wear-resisting layer is arranged on the outer side, the inclined side and the lower side.
The explosion venting valve comprises a shell, a heavy hammer and an explosion part, wherein the shell is of a cylindrical structure, the lower end of the shell is provided with an air flow inlet, the lower end of the shell is connected with the spiral cylinder, and the side wall of the shell is provided with an air flow side outlet; the heavy hammer is in clearance fit with the air flow inlet of the shell, and can move downwards under the action of gravity; the blasting component is arranged outside the airflow side outlet of the shell and comprises a blasting piece; when the airflow pushes the weight upward to the air inlet of the housing to communicate with the air outlet of the housing, the airflow can rupture the rupture disk of the blasting element.
The shell is in an upright state, an outer sleeve is sleeved outside the shell, a closed annular cavity is formed between the shell and the outer sleeve, and the annular cavity is communicated with the inside of the shell through an air flow side outlet; the side wall of the outer sleeve is provided with a sleeve outlet, the outer part of the sleeve outlet is connected with an outlet joint in a sealing way, the outlet joint is cylindrical, the central line of the outlet joint is intersected with and vertical to the central line of the shell, and the outlet end of the outlet joint is connected with the blasting component in a sealing way.
Along the central line direction of casing, the length of outer sleeve is less than the length of casing, and the upper end of outer sleeve is less than the upper end of casing, and the lower extreme of outer sleeve is higher than the lower extreme of casing, and the central line of outer sleeve coincides with the central line of casing, and the casing contains a plurality of air current side export, and a plurality of air current side export are arranged in proper order along the circumference of casing.
The blasting component also comprises an outer cylinder body, the edge of the blasting piece is fixedly connected with the inner surface of the outer cylinder body in a sealing way, the inlet end of the outer cylinder body is connected with the outlet end of the outlet joint through a flange, the center line of the outer cylinder body is coincident with the center line of the outlet joint, the inner diameter of the outer cylinder body is identical with the inner diameter of the outlet joint, and the outlet joint is connected with an inert gas back-blowing interface.
The casing of letting out and exploding the valve is upright state, and the upper end sealing connection of casing has the blind flange, let out and explode the valve still including jib and spring, the spring is located the top of blind flange, and the jib is upright shaft-like structure, and the jib passes the blind flange, and the lower extreme and the weight of jib are connected fixedly, and the upper end of jib is fixed for the upper end of spring, and the lower extreme of spring is fixed for the blind flange, and the spring can provide restoring force for the weight.
The explosion venting valve further comprises a guide sleeve, the guide sleeve is sleeved outside the suspender and is in transition fit with the suspender, the guide sleeve is located between the flange cover and the heavy hammer, the upper end of the guide sleeve is fixedly connected with the flange cover, the length of the guide sleeve and the length of the heavy hammer are summed to be smaller than the distance from the center line of the air flow side outlet to the flange cover along the center line direction of the shell.
The outer portion of the heavy hammer contains a high temperature resistant coating layer, the heavy hammer is in a round cake shape, the edge of the lower end of the heavy hammer is provided with a chamfer transition, the upper end of the chamfer transition is level with the lower end of the shell, and flanges are arranged outside the upper end and the lower end of the shell.
The beneficial effects of the application are as follows: the rotary flue device can be used for connecting a converter vaporization cooling flue and a follow-up fine dust removal facility, is not only a circulation channel of flue gas, but also has the coarse dust removal function of removing slag blocks, agglomerated ash, lump ash and granular dust wrapped in the flue gas, and has small resistance to the flue gas.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application.
Fig. 1 is a schematic view of a rotary flue apparatus.
Fig. 2 is a schematic view along direction a in fig. 1.
Fig. 3 is a schematic structural view of the explosion venting valve.
Fig. 4 is a cross-sectional view taken along the direction C-C in fig. 3.
1. A heavy hammer; 2. a boom; 3. a spring; 4. a housing; 5. a blasting member; 6. a first flange; 7. a second flange; 8. a flange cover; 9. a third flange; 10. a fourth flange; 11. an airflow side outlet; 12. a sleeve outlet; 13. a guide sleeve; 14. a high temperature resistant coating layer; 15. rupture disk; 16. an outlet fitting; 17. an outer sleeve; 18. an outer cylinder; 19. a high temperature flue gas pipe; 20. a back flushing interface;
21. a spiral cylinder; 22. a wear-resistant layer; 23. a thermal insulation material; 24. an ash collecting hopper; 25. an ash discharge opening; 26. a support structure; 27. explosion venting valve; 28. an imaginary cylinder;
211. an outer side; 212. an upper side; 213. an inner side; 214. a lower side; 215. oblique side edges.
Detailed Description
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
The utility model provides a rotatory flue device, includes spiral barrel 21, and spiral barrel 21 is connected with album ash bucket 24 and lets out and explodes valve 27, and album ash bucket 24 and let out and explode valve 27 are located spiral barrel 21 outside, and album ash bucket 24 is located the lower part of spiral barrel 21, and the internal surface of spiral barrel 21 is equipped with wearing layer 22, as shown in fig. 1 and 2.
When the rotary flue device is used, after flue gas enters the spiral cylinder 21, the flue gas accelerates to flow under the action of inertia force, dust particles in the flue gas collide with the inner surface of the spiral cylinder 21 so as to be separated, then the dust particles fall on the bottom of the flue gas flow section of the spiral cylinder 21 under the action of gravity, then flow downwards into the dust collection hopper 24 along the spiral cylinder 21, and the flue gas is discharged out of the rotary flue device. The explosion venting valve 27 is arranged on the spiral cylinder 21 as a safety guarantee. When the working condition medium makes the temperature of the outer wall of the spiral cylinder 21 reach more than 50 ℃, the outer surface of the spiral cylinder 21 needs to be provided with a necessary heat insulation material 23.
In this embodiment, the upper end of the spiral cylinder 21 is provided with a flue gas inlet, the lower end of the spiral cylinder 21 is provided with a flue gas outlet, the explosion venting valve 27 is positioned at the upper part of the spiral cylinder 21, the lower end of the ash collecting hopper 24 is provided with an ash discharging hole 25, and the collected dust particles are discharged through the ash collecting hopper 24 and the ash discharging hole 25. When the volume of the screw cylinder 21 is large or heavy, the inside or outside of the screw cylinder 21 is provided with a support structure 26 and reinforcing ribs, maintaining its strength and stability. When the temperature fluctuation that the flue gas flows through is great, be equipped with the heat accumulator that can store heat in the inside of helical cylinder 21, realize the peak clipping plain valley of hot flue gas, make flue gas temperature tend to stabilize as far as possible. The heat accumulator may be a spiral water pipe sleeved in the spiral cylinder 21, that is, the heat accumulator and the spiral cylinder 21 form a spiral sleeve structure. Alternatively, the spiral cylinder 21 may be designed to have a heat storage function, for example, the cylinder wall of the spiral cylinder 21 is a film wall composed of water pipes.
In this embodiment, the spiral cylinder 21 is in an upright state, the cross section of the spiral cylinder 21 may be rectangular or circular or elliptical, preferably the cross section of the spiral cylinder 21 is pentagonal, the pentagon comprises an outer side 211, an upper side 212, an inner side 213, a lower side 214 and an inclined side 215 which are sequentially connected, the outer side 211 and the inner side 213 are arranged along the vertical direction, the upper side 212 and the lower side 214 are arranged along the horizontal direction, the width of the lower side 214 is smaller than that of the upper side 212, the wear-resistant layer 22 is positioned on the outer side 211, the inclined side 215 and the lower side 214, as shown in fig. 2, the included angle between the inclined side 215 and the outer side 211 is 135 degrees, and the included angle between the inclined side 215 and the lower side 214 is 135 degrees. The distance of the inner side 213 from the centre line of the imaginary cylinder 28 is smaller than the distance of the outer side 211 from the centre line of the imaginary cylinder 28. The wear-resistant layer 22 in the spiral cylinder also has a certain heat storage function.
The spiral cylinder 21 is a spiral cylinder formed by spirally rising the section around an imaginary cylinder 28, the inner side surface of the spiral cylinder 21 is in matched connection with the outer surface of the imaginary cylinder 28, and the angle of the section rotated during spiral rising is not less than 180 degrees. The fact that the spiral cylinder 21 is in an upright state means that the center line of the imaginary cylinder 28 is arranged in the vertical direction, and the imaginary cylinder 28 can be replaced by a cylinder or a truncated cone. The side wall of the spiral cylinder 21 is made of steel plates with certain strength or film walls made of closely-arranged steel pipes, and the wear-resistant layer 22 is positioned in an easily-worn area in the spiral cylinder 21.
In application, the rotary flue device is arranged vertically, as shown in fig. 1, and flue gas enters from top to bottom. The device plays a role in separating slag blocks, agglomerated ash, lump ash and granular dust wrapped in the flue gas, the flue gas resistance is about 500Pa, and is only 1/3 of that of the traditional cyclone dust collector, so that the electric energy of a system is saved.
The explosion venting valve 27 can be made of the existing commercial products, or the explosion venting valve 27 specially designed in the application can be used. The explosion venting valve 27 comprises a shell 4, a heavy hammer 1 and an explosion part 5, wherein the shell 4 is in a cylindrical structure, an air flow inlet is formed in the lower end of the shell 4, the lower end of the shell 4 is connected with a spiral cylinder 21, and an air flow side outlet 11 is formed in the side wall of the shell 4; the heavy hammer 1 is in clearance fit with the air flow inlet of the shell 4, and the heavy hammer 1 can move downwards under the action of gravity; the blasting component 5 is arranged outside the airflow side outlet 11 of the shell 4, and the blasting component 5 comprises a blasting piece 15; when the air flow pushes the weight 1 to move upward until the air flow inlet of the housing 4 communicates with the air flow side outlet 11 of the housing 4, the air flow can break the rupture disk 15 of the blasting member 5, as shown in fig. 3 and 4. This airflow is the flue gas flow in the spiral drum 21.
When the air flow pushes the weight 1 to move upward to the air flow inlet of the housing 4 to communicate with the air flow side outlet 11 of the housing 4 (i.e., the weight 1 moves upward from the solid line position to the broken line position in fig. 3), the air flow can break the rupture disk 15 of the blasting member 5, as shown in fig. 3.
In the initial state, the weight 1 is located at the solid line position in fig. 3, the weight 1 plays a role in sealing the smoke in the normal operation pressure range of the smoke, when the smoke pressure exceeds the normal range, the weight 1 is upwards displaced under the action of the smoke pressure, for example, the weight 1 is upwards moved to the dotted line position in fig. 3, at the moment, the air inlet of the shell 4 is communicated with the air side outlet 11 of the shell 4, meanwhile, the smoke enters the air side outlet 11 of the shell 4 from the air inlet of the shell 4, when the smoke pressure exceeds the pressure-resistant limit of the rupture disc 15, the rupture disc 15 is instantly ruptured, and the high-temperature smoke is discharged from the rupture disc 15. After the high-temperature flue gas is discharged, when the flue gas pressure at the air inlet is restored to be within the normal range, the heavy hammer 1 moves downwards until the initial sealing state is restored, and an arrow B in fig. 3 and 4 indicates the flow of the flue gas.
The explosion venting valve 27 is connected to the outside of the upper part of the spiral cylinder 21 in use, and the heavy hammer 1 plays a role in sealing the smoke when the smoke in the spiral cylinder 21 is in a normal operating pressure range. When the pressure of the flue gas exceeds the pressure-resistant limit of the rupture disk 15, the rupture disk 15 instantaneously breaks, thereby discharging high-temperature flue gas, as shown in fig. 3. The explosion venting valve 27 solves the explosion venting of high-temperature flue gas, and simultaneously can replace a damaged part caused by explosion venting on line, thereby ensuring the normal production of the process.
The rupture disk 15 comprises a stack of metal sheets and plastic film. The metal sheet of the rupture disk 15 may be manufactured according to the rupture disk device safety technical inspection procedure, GB567, and is commercially available. At the same time, to reduce the leakage rate of the seal of the explosion venting valve 27, in this embodiment, the plastic film is located on the inner or outer layer of the rupture disk 15, and is a high density, low strength, leak-proof material.
In this embodiment, the housing 4 is in an upright state, the housing 4 is cylindrical, the outer sleeve 17 is sleeved outside the housing 4, and a closed annular cavity, called a fume collecting chamber, is formed between the housing 4 and the outer sleeve 17, and is communicated with the interior of the housing 4 through the air flow side outlet 11, as shown in fig. 3 and 4.
In this embodiment, the side wall of the outer sleeve 17 is provided with the sleeve outlet 12, the outer sleeve 17 includes an upper end cover, a side peripheral wall and a lower end cover which are sequentially connected from top to bottom, the upper end cover and the lower end cover are both annular, the sleeve outlet 12 is located in the side peripheral wall, the sleeve outlet 12 is externally and hermetically connected with the outlet joint 16, the outlet joint 16 is cylindrical, the central line of the outlet joint 16 intersects with and is vertical to the central line of the shell 4, and the outlet end of the outlet joint 16 is hermetically connected with the blasting component 5. A back-flushing port 20 for inert gas is connected to the side wall of the outlet joint 16, and inert gas can be blown into the flue gas converging chamber through the back-flushing port 20.
In this embodiment, the length of the outer sleeve 17 is smaller than the length of the housing 4 along the center line direction of the housing 4, the upper end of the outer sleeve 17 is lower than the upper end of the housing 4, the lower end of the outer sleeve 17 is higher than the lower end of the housing 4, the center line of the outer sleeve 17 coincides with the center line of the housing 4, the housing 4 contains a plurality of air flow side outlets 11, and the plurality of air flow side outlets 11 are sequentially arranged along the circumferential direction of the housing 4. The diameter of the air flow side outlet 11 is 30% -50% of the diameter of the housing 4. As shown in fig. 3 and 4.
In this embodiment, the blasting component 5 further comprises an outer cylinder 18, the edge of the blasting sheet 15 is fixedly connected with the inner surface of the outer cylinder 18 in a sealing manner, the inlet end of the outer cylinder 18 is connected with the outlet end of the outlet joint 16 through a flange, for example, the outlet end of the outlet joint 16 is connected with the inlet end of the outer cylinder 18 through a third flange 9 and a fourth flange 10, the center line of the outer cylinder 18 coincides with the center line of the outlet joint 16, the inner diameter of the outer cylinder 18 is the same as the inner diameter of the outlet joint 16, and the outer diameter of the outer cylinder 18 is the same as the outer diameter of the outlet joint 16.
In this embodiment, the upper end sealing connection of casing 4 has flange lid 8, let out and explode valve 27 still includes two jib 2 and two springs 3, and spring 3 is located the top of flange lid 8, and jib 2 is upright shaft-like structure, and jib 2 passes flange lid 8, and the lower extreme of jib 2 is connected fixedly with weight 1, and the upper end of jib 2 is fixed for the upper end of spring 3, and the lower extreme of spring 3 is fixed for flange lid 8, and spring 3 can provide restoring force for weight 1. By setting the weight of the weight 1 and the spring coefficient of the spring 3, the upward moving distance of the weight 1 at different air flow pressures can be adjusted, so that the threshold value of the bursting pressure is adjusted together with the bursting disc 15.
Regarding the threshold value of the explosion pressure, it is possible to select that when the air flow pushes the weight 1 upward to move the air flow inlet of the housing 4 to communicate with the air flow side outlet 11 of the housing 4, that is, when the air flow pushes the weight 1 upward to move the lower end of the weight 1 beyond the lower end of the air flow side outlet 11, the air flow can immediately rupture the rupture disk 15 of the explosion element 5 (in this case, the pressure resistance limit of the rupture disk 15 is small). Alternatively, it is also possible to select that when the pressure of the air flow exceeds the pressure-resistant limit of the rupture disk 15 after the air flow pushes the weight 1 upward to move the lower end of the weight 1 a certain distance beyond the lower end of the air flow side outlet 11, the air flow breaks the rupture disk 15 of the blasting member 5 (in this case, the pressure-resistant limit of the rupture disk 15 is large).
In this embodiment, in order to enable the weight 1 to move along the vertical direction, the explosion venting valve 27 further includes a guide sleeve 13, the guide sleeve 13 is sleeved outside the boom 2, the guide sleeve 13 is in transition fit with the boom 2, the guide sleeve 13 is located between the flange cover 8 and the weight 1, the upper end of the guide sleeve 13 is fixedly connected with the flange cover 8, and along the center line direction of the housing 4, the sum of the length of the guide sleeve 13 and the length of the weight 1 is smaller than the distance from the center line of the air flow side outlet 11 to the flange cover 8, as shown in fig. 1 when the weight 1 is located at the position of the dotted line.
In this embodiment, the weight 1 has a high temperature resistant coating 14 on the outer portion thereof to isolate the core material of the weight 1 from the high temperature smoke, i.e. the weight 1 preferably has an inner core material and an outer high temperature resistant coating 14. The weight 1 is the cake form, and weight 1's lower extreme edge is equipped with the chamfer transition, and the upper end of this chamfer transition is parallel and level with the lower extreme of casing 4 (the upper end of this chamfer transition is circular, and the lower extreme of casing 4 is circular, and two circular are located the coplanar), and the upper end of casing 4 and lower extreme are all equipped with the flange outward, like the upper end of casing 4 and lower extreme peripheral hardware second flange 7. When in use, the second flange 7 at the lower end of the shell 4 is fixedly connected with the first flange 6 on the high-temperature flue gas pipeline in the steelmaking production equipment.
The operation of the explosion venting valve 27 is described as follows:
the high-temperature flue gas in the spiral cylinder 21 is rapidly increased to a pressure exceeding the sealing allowable pressure range of the heavy hammer 1 due to the combustion pressure, the heavy hammer 1 moves upwards under the action of the flue gas pressure, and meanwhile, the flue gas flows into the flue gas converging chamber after sequentially passing through the airflow inlet and the airflow side outlet 11 from the side surface of the heavy hammer 1. When the pressure of the flue gas in the flue gas converging chamber exceeds the pressure-resistant limit of the rupture disk 15, the rupture disk 15 immediately breaks, and high-temperature flue gas is discharged from the high-temperature flue gas pipe. When the high-temperature smoke is released until the pressure is restored to the normal range, the heavy hammer 1 is downwards displaced under the action of the combined force of gravity and the elasticity of the spring 3 until the sealing state is restored initially.
In the initial state, the heavy hammer 1 is in clearance fit with the air flow inlet at the lower end of the shell 4, and only a small amount of smoke in the smoke exhaust pipeline overflows from the gap between the heavy hammer 1 and the air flow inlet in the normal pressure range. When the pressure of the high-temperature flue gas of the converter in the smoke exhaust pipeline exceeds the resultant force of the heavy hammer 1 and the spring 3, the heavy hammer 1 moves upwards, and the flue gas flows out from the side face of the heavy hammer 1. When the pressure of the high-temperature flue gas of the converter in the flue gas exhaust pipeline is smaller than the resultant force of the heavy hammer 1 and the spring 3, the heavy hammer 1 moves downwards until the flue gas sealing state is restored.
The outlet end of the blasting component 5 is connected with a high-temperature flue pipe 19, and the blasting piece 15 consists of a strength membrane, a sealing membrane and other parts. When the pressure of the flue gas in the flue gas converging chamber exceeds the pressure-resistant limit of the rupture disc 15 in the blasting component 5, the rupture disc 15 immediately breaks, and high-temperature flue gas is discharged from the high-temperature flue gas pipe 19. Wherein the rupture disk 15 is not limited in its construction in terms of its function.
The foregoing description of the embodiments of the application is not intended to limit the scope of the application, so that the substitution of equivalent elements or equivalent variations and modifications within the scope of the application shall fall within the scope of the patent. In addition, the technical characteristics and technical scheme, technical characteristics and technical scheme can be freely combined for use.
Claims (1)
1. The rotary flue device is characterized by comprising a spiral cylinder body (21), wherein the spiral cylinder body (21) is connected with an ash collecting hopper (24) and an explosion venting valve (27), the ash collecting hopper (24) and the explosion venting valve (27) are positioned outside the spiral cylinder body (21), the ash collecting hopper (24) is positioned at the lower part of the spiral cylinder body (21), and an abrasion-resistant layer (22) is arranged on the inner surface of the spiral cylinder body (21);
the explosion venting valve (27) comprises a shell (4), a heavy hammer (1) and an explosion part (5), wherein the shell (4) is of a cylindrical structure, an air flow inlet is formed in the lower end of the shell (4), the lower end of the shell (4) is connected with a spiral cylinder (21), and an air flow side outlet (11) is formed in the side wall of the shell (4); the heavy hammer (1) is in clearance fit with the air flow inlet of the shell (4), and the heavy hammer (1) can move downwards under the action of gravity; the blasting component (5) is arranged outside the airflow side outlet (11) of the shell (4), and the blasting component (5) comprises a blasting piece (15); when the air flow pushes the hammer (1) to move upwards until the air flow inlet of the shell (4) is communicated with the air flow side outlet (11) of the shell (4), the air flow can fracture the rupture disc (15) of the blasting component (5);
the shell (4) is in an upright state, an outer sleeve (17) is sleeved outside the shell (4), a closed annular cavity is formed between the shell (4) and the outer sleeve (17), and the annular cavity is communicated with the inside of the shell (4) through an airflow side outlet (11); the side wall of the outer sleeve (17) is provided with a sleeve outlet (12), an outlet connector (16) is connected to the outside of the sleeve outlet (12) in a sealing way, the outlet connector (16) is cylindrical, the central line of the outlet connector (16) is intersected with and vertical to the central line of the shell (4), and the outlet end of the outlet connector (16) is connected with the blasting component (5) in a sealing way;
along the central line direction of the shell (4), the length of the outer sleeve (17) is smaller than that of the shell (4), the upper end of the outer sleeve (17) is lower than that of the shell (4), the lower end of the outer sleeve (17) is higher than that of the shell (4), the central line of the outer sleeve (17) coincides with that of the shell (4), the shell (4) comprises a plurality of airflow side outlets (11), and the airflow side outlets (11) are sequentially arranged along the circumferential direction of the shell (4);
the blasting component (5) further comprises an outer cylinder body (18), the edge of the blasting piece (15) is fixedly connected with the inner surface of the outer cylinder body (18) in a sealing way, the inlet end of the outer cylinder body (18) is connected with the outlet end of the outlet joint (16) through a flange, the central line of the outer cylinder body (18) is overlapped with the central line of the outlet joint (16), the inner diameter of the outer cylinder body (18) is the same as the inner diameter of the outlet joint (16), and the outlet joint (16) is connected with an inert gas blowback interface (20);
the shell (4) of the explosion venting valve (27) is in an upright state, the upper end of the shell (4) is connected with a flange cover (8) in a sealing manner, the explosion venting valve (27) further comprises a hanging rod (2) and a spring (3), the spring (3) is located above the flange cover (8), the hanging rod (2) is in an upright rod-shaped structure, the hanging rod (2) penetrates through the flange cover (8), the lower end of the hanging rod (2) is fixedly connected with the heavy hammer (1), the upper end of the hanging rod (2) is fixed relative to the upper end of the spring (3), the lower end of the spring (3) is fixed relative to the flange cover (8), and the spring (3) can provide restoring force for the heavy hammer (1);
the upper end of the spiral cylinder body (21) is provided with a flue gas inlet, the lower end of the spiral cylinder body (21) is provided with a flue gas outlet, an explosion venting valve (27) is positioned at the upper part of the spiral cylinder body (21), the lower end of the ash collecting hopper (24) is provided with an ash discharging hole (25), the inner side or the outer side of the spiral cylinder body (21) is provided with a supporting structure (26), and a heat accumulator capable of storing heat is arranged inside the spiral cylinder body (21);
the spiral cylinder body (21) is in an upright state, the section of the spiral cylinder body (21) is pentagon, the pentagon comprises an outer side (211), an upper side (212), an inner side (213), a lower side (214) and an inclined side (215) which are sequentially connected, the outer side (211) and the inner side (213) are arranged in the vertical direction, the upper side (212) and the lower side (214) are arranged in the horizontal direction, the width of the lower side (214) is smaller than that of the upper side (212), and the wear-resistant layer (22) is arranged on the outer side (211), the inclined side (215) and the lower side (214);
the explosion venting valve (27) further comprises a guide sleeve (13), the guide sleeve (13) is sleeved outside the hanging rod (2), the guide sleeve (13) is in transition fit with the hanging rod (2), the guide sleeve (13) is positioned between the flange cover (8) and the heavy hammer (1), the upper end of the guide sleeve (13) is fixedly connected with the flange cover (8), the sum of the length of the guide sleeve (13) and the length of the heavy hammer (1) is smaller than the distance from the central line of the air flow side outlet (11) to the flange cover (8) along the central line direction of the shell (4);
the outside of weight (1) contains high temperature resistant coating layer (14), and weight (1) is the cake form, and the lower extreme edge of weight (1) is equipped with the chamfer transition, and the upper end and the lower extreme parallel and level of casing (4) of this chamfer transition all are equipped with the flange outside the upper end and the lower extreme of casing (4).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711153954.6A CN107841589B (en) | 2017-11-20 | 2017-11-20 | Rotary flue device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711153954.6A CN107841589B (en) | 2017-11-20 | 2017-11-20 | Rotary flue device |
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| CN107841589A CN107841589A (en) | 2018-03-27 |
| CN107841589B true CN107841589B (en) | 2023-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711153954.6A Active CN107841589B (en) | 2017-11-20 | 2017-11-20 | Rotary flue device |
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| CN (1) | CN107841589B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1355017A (en) * | 1963-02-01 | 1964-03-13 | Primary blast furnace gas purification device | |
| CN2849385Y (en) * | 2005-08-24 | 2006-12-20 | 王德元 | Vacuum safety valve for vacuum boiler |
| EP2123778A1 (en) * | 2008-04-23 | 2009-11-25 | China Steel Corporation | Flue dust discharging method and system |
| RU2385950C1 (en) * | 2009-05-12 | 2010-04-10 | Александр Макарович Салдаев | Device for catching of desorganised emissions from metallurgycal aggregate |
| CN201558626U (en) * | 2009-10-09 | 2010-08-25 | 沈阳东和环保有限公司 | Gas dry-process safety cloth bag dust remover |
| CN102876837A (en) * | 2012-09-18 | 2013-01-16 | 中冶南方工程技术有限公司 | Device and method for removing dust from converter gas by dry method |
| CN105063273A (en) * | 2015-09-04 | 2015-11-18 | 江苏博际喷雾系统有限公司 | Converter primary flue gas low-energy-consumption semidry-process dust removal system |
| CN205718514U (en) * | 2016-06-18 | 2016-11-23 | 赣县金鹰稀土实业有限公司 | A kind of flue water-cooling structure of rotary kiln |
| CN106906331A (en) * | 2017-03-30 | 2017-06-30 | 河北华奥节能科技有限公司 | A kind of dry-method dust-removal device and method for reclaiming converter gas waste heat |
| CN207567274U (en) * | 2017-11-20 | 2018-07-03 | 北京京诚科林环保科技有限公司 | Rotary flue device |
-
2017
- 2017-11-20 CN CN201711153954.6A patent/CN107841589B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1355017A (en) * | 1963-02-01 | 1964-03-13 | Primary blast furnace gas purification device | |
| CN2849385Y (en) * | 2005-08-24 | 2006-12-20 | 王德元 | Vacuum safety valve for vacuum boiler |
| EP2123778A1 (en) * | 2008-04-23 | 2009-11-25 | China Steel Corporation | Flue dust discharging method and system |
| RU2385950C1 (en) * | 2009-05-12 | 2010-04-10 | Александр Макарович Салдаев | Device for catching of desorganised emissions from metallurgycal aggregate |
| CN201558626U (en) * | 2009-10-09 | 2010-08-25 | 沈阳东和环保有限公司 | Gas dry-process safety cloth bag dust remover |
| CN102876837A (en) * | 2012-09-18 | 2013-01-16 | 中冶南方工程技术有限公司 | Device and method for removing dust from converter gas by dry method |
| CN105063273A (en) * | 2015-09-04 | 2015-11-18 | 江苏博际喷雾系统有限公司 | Converter primary flue gas low-energy-consumption semidry-process dust removal system |
| CN205718514U (en) * | 2016-06-18 | 2016-11-23 | 赣县金鹰稀土实业有限公司 | A kind of flue water-cooling structure of rotary kiln |
| CN106906331A (en) * | 2017-03-30 | 2017-06-30 | 河北华奥节能科技有限公司 | A kind of dry-method dust-removal device and method for reclaiming converter gas waste heat |
| CN207567274U (en) * | 2017-11-20 | 2018-07-03 | 北京京诚科林环保科技有限公司 | Rotary flue device |
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| CN107841589A (en) | 2018-03-27 |
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