CN115341059A - Blast furnace peeping device and ash removal method - Google Patents
Blast furnace peeping device and ash removal method Download PDFInfo
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- CN115341059A CN115341059A CN202210803492.2A CN202210803492A CN115341059A CN 115341059 A CN115341059 A CN 115341059A CN 202210803492 A CN202210803492 A CN 202210803492A CN 115341059 A CN115341059 A CN 115341059A
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- connecting pipe
- blast furnace
- piece
- peeping device
- fixed sleeve
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- 238000000034 method Methods 0.000 title claims abstract description 35
- 208000008918 voyeurism Diseases 0.000 title claims abstract description 33
- 238000010926 purge Methods 0.000 claims abstract description 36
- 238000004140 cleaning Methods 0.000 claims abstract description 17
- 230000000903 blocking effect Effects 0.000 claims abstract description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000007664 blowing Methods 0.000 abstract description 7
- 238000003912 environmental pollution Methods 0.000 abstract description 4
- 238000004891 communication Methods 0.000 abstract description 2
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 37
- 239000002956 ash Substances 0.000 description 11
- 239000003245 coal Substances 0.000 description 9
- 239000000428 dust Substances 0.000 description 6
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 206010053615 Thermal burn Diseases 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000002594 fluoroscopy Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 238000009991 scouring Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010883 coal ash Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/24—Test rods or other checking devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
- B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
- B08B9/0328—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid by purging the pipe with a gas or a mixture of gas and liquid
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/16—Tuyéres
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention discloses a blast furnace peeping device and an ash cleaning method, and relates to the technical field of monitoring in a blast furnace, wherein the blast furnace peeping device comprises: the connecting pipe is provided with a stop piece, the stop piece is arranged between the two ends of the connecting pipe, the first end of the connecting pipe is detachably and hermetically connected with a perspective piece, and the stop piece is used for communicating or blocking the communication between the first end and the second end of the connecting pipe; and the purging piece is connected with the connecting pipe at a position between the stop piece and the first end and is used for pressurizing and inflating the connecting pipe. The blast furnace peeping device can be arranged on a blast furnace large cover, when the connecting pipe is shielded from sight by a blocking object in the blast furnace, the blocking object in the connecting pipe can be cleaned by the cooperation of the blowing piece and the stop piece, and the threat of high-temperature gas or the blocking object sprayed out of the blast furnace in the manual operation process to personal safety and environmental pollution is avoided.
Description
Technical Field
The invention belongs to the technical field of monitoring in a blast furnace, and relates to a blast furnace peeping device and an ash removal method.
Background
When the blast furnace works, a blast furnace operator generally observes the conditions in the blast furnace through the tuyere, and particularly mainly observes the conditions of coal injection in the furnace, the condition of whether the tuyere is damaged or not and the smelting condition in the furnace. The furnace temperature can be judged by observing the brightness of the tuyere, and when the furnace temperature is too high or too low, a worker can adjust the furnace temperature in time. Whether the air port is damaged or not can be determined by observing whether the air port leaks water or not, so that the air port can be replaced or repaired in time when the air port is damaged. When the tuyere is damaged, whether the coal guns in the blast furnace are centered or not needs to be further observed through the tuyere, so that the reason that the tuyere is damaged and water leakage is caused by the misalignment of the coal guns or the scouring of the tuyere by coal powder can be determined. If the coal is determined to be caused by the scouring of the tuyere by the pulverized coal, the worker needs to adjust the insertion depth of the coal gun in time.
In the related technology, as the pulverized coal is combusted in the tuyere, the coal ash after combustion may form a blockage, and the blockage is gathered at the tuyere, so that the worker cannot easily judge whether the tuyere is damaged or leaked and whether the coal gun is not centered to judge the smelting condition in the furnace by observing the light and shade of the tuyere. In view of the above situation, if a hysteresis observation method is adopted to observe the furnace temperature in the tapping process, the tapping performance is easy to be unstable due to too high or too low furnace temperature; if a manual poking mode is adopted, hot air in the furnace escapes the plug from the air inlet, so that operators are easily burned and scalded, and the process is accompanied by noise pollution and dust pollution.
How to avoid damage to personnel and environment in the process of removing the blockage of the blast furnace is always a problem to be solved urgently by the technical personnel in the field.
Disclosure of Invention
In order to solve the problems, the invention provides a blast furnace peeping device and a dust cleaning method, so that workers can clearly observe the conditions in a blast furnace.
According to a first aspect of the present invention, there is provided a blast furnace peeping device comprising: the connecting pipe is provided with a stop piece, the stop piece is arranged between the two ends of the connecting pipe, the first end of the connecting pipe is detachably and hermetically connected with a perspective piece, and the stop piece is used for communicating or blocking the communication between the first end and the second end of the connecting pipe; and the purging piece is connected with the connecting pipe at a position between the stop piece and the first end and is used for pressurizing and inflating the connecting pipe.
Preferably, the blast furnace peeping device further comprises a cover plate, the connecting pipe penetrates through the cover plate, and the cover plate is connected with the connecting pipe in a sealing mode.
Preferably, the see-through member comprises: the fixed sleeve is detachably connected with the first end, the bottom of the fixed sleeve is provided with an observation port in a penetrating mode, the inner section of the fixed sleeve is matched with the outer section of the connecting pipe, and the size of the inner section of the fixed sleeve is larger than that of the observation port; and the lens is arranged in the fixed sleeve and blocks the observation port.
Preferably, the first end is provided with external screw threads, the fixing sleeve is provided with internal screw threads, the connecting pipe is in threaded fit connection with the fixing sleeve, and the lens is fixed at the bottoms of the first end and the fixing sleeve.
Preferably, the fixing sleeve is a nut, and one end of the nut is contracted into the observation port along the radial direction of the screw hole of the nut.
Preferably, the purging piece comprises an inflation valve, an air duct and an air supply device, wherein the inflation valve is connected with one end of the connecting pipe and one end of the air duct, the other end of the air duct is connected with the air supply device, and the air pressure in the air duct is greater than the air pressure in the inner cavity of the connecting pipe.
Preferably, the central axes of the connecting pipe, the cover plate and the observation port coincide, the connecting pipe is a steel connecting pipe, and the stopper comprises a ball valve.
According to a second aspect of the present invention, there is provided a method of cleaning ash for cleaning a blast furnace inspection device according to the first aspect and preferred embodiments, comprising: the open state of the stop member is such that, determining that a blockage exists in the connecting pipe to block the sight; the purging piece inflates air into the connecting pipe, wherein the air pressure of the air inflation is greater than the air pressure in the connecting pipe; the purging piece stops inflating into the connecting pipe; and judging whether the connecting pipe has a blockage to block the sight.
Preferably, when it is determined that the connecting pipe still has a blockage to block the line of sight, the ash removal method further includes: the stop piece is closed to block the first end and the second end of the connecting pipe from communicating; detaching the see-through from the connecting tube; the purging piece inflates air into the connecting pipe; assembling the see-through to the connecting tube; the stop is opened.
Preferably, before assembling the see-through member to the connection pipe, the soot cleaning method further includes: and cleaning the perspective piece.
Through the design, the invention can at least achieve the following beneficial effects:
according to the blast furnace peeping device and the dust cleaning method thereof, the blast furnace peeping device is arranged on the blast furnace big cover, and the first end and the second end of the connecting pipe are blocked to be communicated by closing the stop piece before the perspective piece is disassembled, so that burning accidents, noise and air pollution caused by high-temperature gas injection in the blast furnace can be effectively avoided; the high-pressure gas can be introduced into the connecting pipe through the purging piece to perform ash removal treatment on the inside of the connecting pipe, so that the generation of burn and scald accidents caused by manual operation is avoided.
Drawings
FIG. 1 is a schematic structural view of an embodiment of a blast furnace peeping device according to the present invention;
FIG. 2 is a schematic sectional view of a part of another embodiment of the blast furnace peeping device according to the present invention;
FIG. 3 is a schematic structural view of an embodiment of a see-through member;
FIG. 4 is a schematic flow diagram of one embodiment of the ash removal method of the present invention.
The reference numbers in the figures illustrate:
1-connecting pipe; 2-a stop member; 3-a see-through; 31-a fixed sleeve; 311-a viewing port; 32-a lens; 4-purging; 41-inflation valve; 42-an airway tube; 43-gas supply means; and 5, covering the plate.
Detailed Description
To make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
In addition, in the description of the present invention, the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention but do not require that the present invention must be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. The terms "connected" and "connected" as used herein are intended to be broadly construed, and may include, for example, fixed connections and removable connections; they may be directly connected or indirectly connected through intermediate members, and specific meanings of the above terms will be understood by those skilled in the art as appropriate.
In the related art, the air pipe of the blast furnace may have the phenomenon of air leakage, the high-temperature hot air easily makes the air pipe red, and the air supply device 43 for storing high-pressure gas is reserved beside the air port of the blast furnace for cooling the air pipe with air leakage. The embodiment of the invention aims to solve the problems in the related art, and provides a blast furnace peeping device and a method for cleaning ash of the blast furnace peeping device based on an air supply device 43, so that when the conditions in a blast furnace and the conditions of a tuyere cannot be observed, workers can avoid the danger of burning and scalding by high-temperature hot air, and can timely and effectively remove blockages.
According to the first aspect of the invention, the blast furnace peeping device can be mounted on a blast furnace tuyere big cover and used for observing the condition in the blast furnace and the condition of a tuyere and cleaning a connecting pipe 1 and/or a perspective piece 3 after the sight of the connecting pipe is blocked by a blocking object, so that the problems of potential personal safety threat and environmental pollution caused by manual operation are avoided.
FIG. 1 is a schematic structural view of an embodiment of a blast furnace peeping device according to the present invention; fig. 2 is a schematic sectional view of a partial structure of another embodiment of the blast furnace peeping device according to the present invention. As shown in fig. 1 and 2, the blast furnace peeping device of the present embodiment may include a connecting pipe 1 and a purging element 4, wherein the connecting pipe 1 may be provided with a stopper 2, the stopper 2 may be disposed between two ends of the connecting pipe 1, a first end of the connecting pipe 1 may be detachably and hermetically connected with a perspective element 3, and the stopper 2 is used for communicating or blocking the first end to communicate with a second end of the connecting pipe 1. The sweep 4 may be connected to the connector tube 1 at a location between the stopper 2 and the first end, and the sweep 4 may be used to pressurize and inflate the connector tube 1.
In this embodiment, the connection pipe 1 may be a steel connection pipe, and the stopper 2 may be a ball valve installed on the connection pipe 1. When the ball valve is opened, the two ends of the connecting pipe 1 are communicated, and the high-temperature gas mixed with the blocking objects in the blast furnace enters the inside of the connecting pipe 1 from the second end which is arranged at the blast furnace tuyere and is close to the inside of the blast furnace. Since the first end of the connection pipe 1 is transparently sealed, an observer can observe the condition of the furnace and the condition of the tuyere through the see-through member 3 and the connection pipe 1. The dark tuyere can judge that the furnace temperature is low, the bright tuyere can judge that the furnace temperature is normal, and the bright tuyere can judge that the furnace temperature is high. The ball valve is closed, can block first end and the second end intercommunication of connecting pipe 1, can avoid being burnt by the high temperature gas of connecting pipe 1 spun when dismantling perspective piece 3, improves the security of operation.
The purging element 4 is disposed at a position between the first end and the stopper 2, and the purging element 4 can supply the high-pressure gas in the gas supply device 43 to the inside of the connection pipe 1, the high-pressure gas having a low temperature and a pressure controlled to be at least 0.2 mpa higher than the pressure of the high-temperature gas in the furnace. In addition, the high-pressure gas may be high-pressure nitrogen or compressed air, and may absorb heat in the connection pipe 1 during the use thereof, so as to reduce the temperature of the gas jetted out of the connection pipe 1. In the process that an observer observes the conditions of the furnace and the tuyere, the stopper 2 is in an open state. The view is found to be blocked in the observation process, the obstruction can be determined to be gathered in the connecting pipe 1 and/or on the perspective part 3, then the purging part 4 can be operated to inject high-pressure gas into the connecting pipe 1, and if the view is recovered after purging for a period of time, the obstruction appears in the area between the second end of the connecting pipe 1 and the position of the connecting purging part 4.
If the line of sight is still obstructed, it can be determined that a blockage is present in the area of the connection tube 1 connecting the position of the purging element 4 to the first end and/or the see-through element 3. In this case, the stop member 2 can be closed, and the see-through member 3 can be detached from the connection pipe 1 for inspection and cleaning, so that the stop member 2 is closed, thereby preventing the high-temperature gas possibly mixed with obstructions in the furnace from being sprayed out through the connection pipe 1 to cause burn and scald to the operator. After the perspective piece 3 is detached, the purging piece 4 injects high-pressure gas into the connecting pipe 1, the stop piece 2 stops the high-pressure gas from entering the blast furnace, the high-pressure gas is further sprayed out from the first end of the connecting pipe 1, and a blockage in the area from the connecting position of the purging piece 4 and the connecting pipe 1 to the first end is blown out of the connecting pipe 1.
The blast furnace peeping device of the embodiment can be used for observing the conditions of the inside of the blast furnace and the tuyere, can also be used for purging the blowing piece 4 and the stop piece 2, and is matched with the blowing piece to clean up the blockage in the connecting pipe. The high-pressure gas released by the purging piece 4 in the blockage clearing process is low in temperature, so that personal injury caused by manual operation is avoided. And the high-pressure gas can avoid the pollution to the environment. When the blockage is arranged in the region between the position of the connecting purging piece 4 and the second end, the blast furnace peeping device of the embodiment only injects high-pressure gas into the connecting pipe 1 through the purging piece 4, so that the blockage can be blown into the blast furnace, the connecting pipe 1 is cleaned, the perspective piece 3 is not required to be detached, the high-temperature gas possibly mixed with the blockage in the blast furnace is prevented from being sprayed out from the connecting pipe 1, and the environmental pollution can be reduced. The blocking object is arranged between the position of the connecting blowing piece 4 and the first end or covers the perspective piece 3, the front stop piece 2 of the perspective piece 3 is disassembled to be closed, high-temperature gas in the furnace can be blocked from being sprayed out from the connecting pipe 1, an operator is prevented from being scalded, and the operation safety is improved.
The stop member 2 is matched with the purging member 4, so that the blockage in the connecting pipe 1 can be cleaned in a segmented mode, and the operation of detaching the perspective member 3 by an operator can be avoided if the blockage exists only in the area between the position of the connecting purging member 4 and the second end. The fluoroscopy 3 is only removed when it is determined that a blockage is present at a position between the position of the connection purge 4 and the first end or overlying the fluoroscopy 3. Therefore, the workload of operators can be reduced, and the dust cleaning efficiency of the blast furnace peeping device is improved.
In some embodiments, the blast furnace peeping device may further include a cover plate 5, the connection pipe 1 may penetrate through the cover plate 5, and the cover plate 5 is hermetically connected with the connection pipe 1. Specifically, the cover plate 5 can be matched with a groove of a blast furnace big cover, and the cover plate 5 and the big cover are detachably connected in a sealing mode. A through-hole may be provided through the cover plate 5, which may be matched with the connection pipe 1. The end surface of the second end of the connecting pipe 1 may be flush with the side of the cover plate 5 facing the furnace, or may be disposed in the through hole, and the embodiment is not limited in this respect. The cover plate 5 is hermetically connected with the connecting pipe 1, so that high-temperature gas possibly mixed with blockages in the blast furnace is prevented from being sprayed out of the blast furnace along the outer side of the connecting pipe 1.
Referring to fig. 3, in some embodiments, the see-through part 3 may include a fixing sleeve 31 and a lens 32, wherein the fixing sleeve 31 is detachably connected to the first end and has a viewing port 311 at the bottom, an inner shape of the fixing sleeve 31 has a cross section matching with an outer shape of the connection tube 1, and an inner shape of the fixing sleeve 31 has a cross section size larger than that of the viewing port 411. The fixing sleeve 31 may be a cylindrical structure formed by a circular bottom plate with a hole at the center and a side plate, wherein the side plate is connected with the circular bottom plate along the circumference of the circular bottom plate and extends towards one side of the circular bottom plate. Or may be a truncated cone-shaped cylinder formed at an obtuse angle with the bottom plate, and this embodiment is not limited in this respect. In this embodiment, the fixing sleeve 31 may be a tubular structure with two ends penetrating through, the fixing sleeve 31 is cut perpendicular to the central axis of the fixing sleeve 31 to obtain a cross section, and the shape of the inner side of the fixing sleeve 31 at the cross section is the inner shape of the fixing sleeve 31.
The shape cross-section matches with 1 appearance cross-section of connecting pipe in this embodiment will fixed sleeve 31, can install fixed sleeve 31 to connecting pipe 1 from the outside of connecting pipe 1, avoids influencing the high-pressure gas clearance blockage in-process from the curb plate thickness that fixed sleeve 31 of 1 inboard installation of connecting pipe caused and causes the hindrance, causes the blockage clearance unclean. Moreover, the inner section of the fixing sleeve 31 is matched with the outer section of the connecting pipe 1, and the first end can be matched with the bottom of the fixing sleeve to clamp and fix the lens 32, so that the lens 32 can be conveniently disassembled, assembled and cleaned. The lens 32 can be placed in the fixed sleeve 31 and block the observation port 311, so that the high-temperature gas possibly mixed with obstructions in the furnace is reduced from being sprayed out through the observation port 311, and the danger that an observer is scalded in the observation process is avoided.
The first end of the connecting pipe 1 may be provided with an external thread, the fixing sleeve 31 is provided with an internal thread, the connecting pipe 1 is connected with the fixing sleeve 31 in a thread fit manner, and the lens 32 is fixed at the bottom of the first end and the fixing sleeve 31. Specifically, the fixing sleeve 31 may be a specially made nut, one end of which is radially contracted along a screw hole of the nut to form the viewing port 311. Specifically, the outer shape of the nut may be the same as that of a hexagon nut, so that an operator can conveniently use a wrench or other tools to disassemble and assemble the nut at the first end of the connecting pipe 1, and the fixing stability and the disassembling and assembling efficiency of elements are improved.
Further, in some embodiments, the central axes of the connection tube 1, the cover plate 5, and the viewing port 311 coincide. The condition of the furnace and the tuyere can be conveniently and visually known by an observer in the maximum range. If the central axis is dislocated, the observation visual field is reduced, and the observation quality is influenced. The baffle plate can be arranged between the blowing piece 4 and the first end on the connecting pipe 1, and when a worker is close to a blast furnace for observation, the baffle plate can be used for carrying out heat insulation protection on the whole face.
In some embodiments, referring to fig. 1, the purging element 4 may include an inflation valve 41, an air duct 42, and a gas supply device 43, wherein the inflation valve 41 is connected to one end of the connecting tube 1 and the air duct 42, the other end of the air duct 42 is connected to the gas supply device 43, and the pressure of the gas in the air duct 42 is higher than the pressure of the gas in the inner cavity of the connecting tube 1. Charging valve 41 is disposed on connecting pipe 1 between stopper 2 and the first end, and detachably connected to connecting pipe 1, and is used for controlling the injection of high-pressure gas into connecting pipe 1, and further cleaning up the blockage in connecting pipe 1. The high-pressure gas for clearing the blockage is derived from the high-pressure gas of the gas supply device beside the blast furnace tuyere and mainly used for cooling the air pipe with air leakage. This embodiment is used for clearing up the blockage in the connecting pipe 1 with this high-pressure gas, has not only improved its utilization ratio, still because its temperature is low, can avoid clearing up the danger that the blockage in-process led to the fact the burn and scald to operating personnel.
Based on the same or similar design considerations, the second aspect of the embodiments of the present invention provides a dust cleaning method, which can be used to clean the connection pipe 1 and the lens 32 of the blast furnace peeping device according to the first aspect and each preferred embodiment, so that the observer can clearly observe the conditions inside the blast furnace through the observation port 311, and personal safety threats caused by manual cleaning can be avoided. FIG. 4 is a schematic flow chart of an embodiment of the ash removal method of the present invention, and as shown in FIG. 4, the ash removal method may include the following steps:
s2, determining that a blockage exists in the connecting pipe 1 to block the sight line when the stop piece 2 is in an open state;
s4, inflating the purging piece 4 into the connecting pipe 1, wherein the inflation pressure is greater than the pressure in the connecting pipe 1;
s6, stopping inflating the purging piece 4 into the connecting pipe 1;
and S8, judging whether the connecting pipe 1 is blocked by a blockage to block the sight.
When the observer observes the inside of the furnace through the observation port 311 and the stopper 2 ball valve is in an open state, if the blockage is found, it can be inferred that the blockage is present in the connection pipe 1 or on the lens 32, or the blockage is present in both the connection pipe 1 and the lens 32. High-pressure gas is injected into the connecting pipe 1 for a period of time under the state that the ball valve is not closed, the condition in the furnace is observed after the injection of the high-pressure gas is stopped, and if the sight line is recovered, the previous blockage exists in the area between the second end of the connecting pipe 1 and the position where the purging piece 4 is connected. If the line of sight is not restored or is not completely restored, it can be determined that a blockage remains in the area between the first end and the location where the purge member 4 is connected, and/or the see-through member 3, and the operation of S10 described below is performed.
After S8, when it is determined that there is still a blockage in the connection pipe 1 to block the line of sight, the ash removal method of this embodiment may further include:
s10: the stop piece 2 is closed to block the first end and the second end of the connecting pipe 1 from communicating;
s12: detaching the see-through 3 from the connecting tube 1;
s14: the purging piece 4 recharges the connecting pipe 1;
s16: assembling the see-through 3 to the connection tube 1;
s18: opening the stopper 2.
In the above S16: before assembling the see-through member 3 to the connection pipe 1, the ash removal method of the embodiment may further include: s13: the see-through 3 is cleaned. Wherein, blowing member 4 is aerifyd in to connecting pipe 1, clears up the blockage in the region between first end and the 4 hookup locations of blowing member, and this process can be gone on with above-mentioned washing perspective piece 3 simultaneously, reduces the deashing time, and then shortens the neutral period of observing the interior condition of stove.
According to the dust cleaning method, when the view is shielded by the blockage in the blast furnace, the blockage in the connecting pipe 1 can be cleaned, and the threat of high-temperature gas or the blockage sprayed out of the blast furnace to personal safety and environmental pollution in the manual operation process is avoided.
It will be appreciated by those skilled in the art that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.
Claims (10)
1. A blast furnace peeping device, characterized by comprising:
the connecting pipe (1) is provided with a stop piece (2), the stop piece (2) is arranged between two ends of the connecting pipe (1), a perspective piece (3) is detachably and hermetically connected to a first end of the connecting pipe (1), and the stop piece (2) is used for communicating or blocking the first end to be communicated with a second end of the connecting pipe (1);
a purge (4) connected to the connection tube (1) at a location between the stopper (2) and the first end, the purge (4) being for pressurizing and inflating the connection tube (1).
2. The blast furnace peeping device according to claim 1,
the blast furnace peeping device also comprises a cover plate (5) which is used for being connected with a blast furnace large cover in a sealing and detachable manner;
the connecting pipe (1) penetrates through the cover plate (5), and the cover plate (5) is hermetically connected with the connecting pipe (1).
3. The blast furnace peeping device according to claim 2,
the see-through (3) comprises:
the fixed sleeve (31) is detachably connected with the first end, the bottom of the fixed sleeve is provided with an observation port (311) in a penetrating mode, the inner section of the fixed sleeve (31) is matched with the outer section of the connecting pipe (1), and the size of the inner section of the fixed sleeve (31) is larger than that of the observation port (311);
a lens (32) disposed in the fixing sleeve (31) and blocking the viewing port (311).
4. The blast furnace peeping device according to claim 3,
the first end is provided with the external screw thread, fixed sleeve (31) are provided with the internal thread, connecting pipe (1) with fixed sleeve (31) screw-thread fit connects, lens (32) are fixed in the first end with the bottom of fixed sleeve (31).
5. The blast furnace peeping device according to claim 4,
the fixed sleeve (31) is a nut, and one end of the nut is radially contracted into the observation port (311) along a screw hole of the nut.
6. The blast furnace peeping device according to any one of claims 3 to 5,
purging piece (4) are including gas charging valve (41), air duct (42), air feeder (43), wherein, gas charging valve (41) are connected connecting pipe (1) and the one end of air duct (42), the other end of air duct (42) is connected air feeder (43), the gas pressure in air duct (42) is greater than the gas pressure of connecting pipe (1) inner chamber.
7. The blast furnace peeping device according to claim 6,
the central axis of connecting pipe (1), apron (5) and viewing aperture (311) coincide, connecting pipe (1) is the steel connecting pipe, stopper piece (2) include the ball valve.
8. A method for removing ash from a blast furnace peeping device according to any one of claims 1-7, comprising the steps of:
the opening state of the stop piece (2) determines that a blockage exists in the connecting pipe (1) to block the sight;
the purging piece (4) inflates air into the connecting pipe (1), wherein the inflation air pressure is greater than the air pressure in the connecting pipe (1);
the purging piece (4) stops inflating into the connecting pipe (1);
and judging whether the connecting pipe (1) has a blockage to block the sight.
9. The ash removal method of claim 8,
when judging that the connecting pipe (1) still has a blockage to block the sight, the ash removal method further comprises the following steps:
the stop piece (2) is closed to block the first end and the second end of the connecting pipe (1) from communicating;
-detaching the see-through (3) from the connecting tube (1);
the purging piece (3) inflates the connecting pipe (1);
assembling the see-through (3) to the connecting tube (1);
opening the stop (2).
10. The method of removing ash of claim 9,
before the assembling the perspective part (3) to the connecting pipe (1), the ash cleaning method further comprises the following steps:
cleaning the see-through part (3).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210803492.2A CN115341059A (en) | 2022-07-07 | 2022-07-07 | Blast furnace peeping device and ash removal method |
| CN202321781454.8U CN220284120U (en) | 2022-07-07 | 2023-07-07 | Peeping device for blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210803492.2A CN115341059A (en) | 2022-07-07 | 2022-07-07 | Blast furnace peeping device and ash removal method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115341059A true CN115341059A (en) | 2022-11-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210803492.2A Withdrawn CN115341059A (en) | 2022-07-07 | 2022-07-07 | Blast furnace peeping device and ash removal method |
| CN202321781454.8U Active CN220284120U (en) | 2022-07-07 | 2023-07-07 | Peeping device for blast furnace |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321781454.8U Active CN220284120U (en) | 2022-07-07 | 2023-07-07 | Peeping device for blast furnace |
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| Country | Link |
|---|---|
| CN (2) | CN115341059A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2858661Y (en) * | 2005-08-29 | 2007-01-17 | 安阳钢铁集团有限责任公司 | Peeping device for high furnace tuyere |
| CN203890376U (en) * | 2014-06-18 | 2014-10-22 | 武钢集团昆明钢铁股份有限公司 | High-temperature-resistant high-pressure-resistant sealed reliable hot-blast stove peephole device |
| CN110835665A (en) * | 2019-11-12 | 2020-02-25 | 山西太钢不锈钢股份有限公司 | Method for treating blocking sundries in tuyere peep hole in blast furnace air supply state |
| CN216550508U (en) * | 2021-11-19 | 2022-05-17 | 南京钢铁股份有限公司 | Online blowing device for blast furnace tuyere peephole |
-
2022
- 2022-07-07 CN CN202210803492.2A patent/CN115341059A/en not_active Withdrawn
-
2023
- 2023-07-07 CN CN202321781454.8U patent/CN220284120U/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2858661Y (en) * | 2005-08-29 | 2007-01-17 | 安阳钢铁集团有限责任公司 | Peeping device for high furnace tuyere |
| CN203890376U (en) * | 2014-06-18 | 2014-10-22 | 武钢集团昆明钢铁股份有限公司 | High-temperature-resistant high-pressure-resistant sealed reliable hot-blast stove peephole device |
| CN110835665A (en) * | 2019-11-12 | 2020-02-25 | 山西太钢不锈钢股份有限公司 | Method for treating blocking sundries in tuyere peep hole in blast furnace air supply state |
| CN216550508U (en) * | 2021-11-19 | 2022-05-17 | 南京钢铁股份有限公司 | Online blowing device for blast furnace tuyere peephole |
Also Published As
| Publication number | Publication date |
|---|---|
| CN220284120U (en) | 2024-01-02 |
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Application publication date: 20221115 |