CN212152363U - Blast furnace ironmaking distributing device water-cooling airtight box combined cooling device - Google Patents
Blast furnace ironmaking distributing device water-cooling airtight box combined cooling device Download PDFInfo
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- CN212152363U CN212152363U CN202020144690.9U CN202020144690U CN212152363U CN 212152363 U CN212152363 U CN 212152363U CN 202020144690 U CN202020144690 U CN 202020144690U CN 212152363 U CN212152363 U CN 212152363U
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- water
- cooling
- central throat
- chassis
- rotating sleeve
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- 238000001816 cooling Methods 0.000 title claims abstract description 73
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 45
- 238000007789 sealing Methods 0.000 claims abstract description 22
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000000835 fiber Substances 0.000 claims abstract description 18
- 230000005540 biological transmission Effects 0.000 claims abstract description 14
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 10
- 239000010959 steel Substances 0.000 claims abstract description 10
- 230000000694 effects Effects 0.000 abstract description 6
- 238000009413 insulation Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 3
- 238000003723 Smelting Methods 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 17
- 239000000498 cooling water Substances 0.000 description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000005995 Aluminium silicate Substances 0.000 description 2
- 229910000323 aluminium silicate Inorganic materials 0.000 description 2
- 235000012211 aluminium silicate Nutrition 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000009991 scouring Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
A blast furnace iron-smelting distributor water-cooling airtight box combined cooling device belongs to the technical field of low-heat-conductivity-coefficient material heat insulation and circulating water cooling equipment. Comprises a central throat pipe (1), a cover (5), an aluminum silicate fiber felt I (6), a trunnion rotating sleeve (7), a thin steel plate (8), an aluminum silicate fiber felt II (9), a water-cooling chassis (10) and a box body (11); the central throat (1) is a fixed component, the geometric rotation center line of the central throat is also the center line of the distributor and is arranged in a furnace gas area at the top of the furnace, and the central throat (1) consists of a water distribution disc (2), a crack water jacket (3) and a sealing bottom plate (4); the upper part of the central throat pipe (1) is provided with a water distribution disc (2), the middle part is provided with a crack water jacket (3), and the bottom part is provided with a water-cooling channel sealing bottom plate (4). Cooling the central throat pipe crack; the middle part of the trunnion rotating sleeve is insulated, and the lower part of the water-cooling chassis is insulated; and (5) performing spiral cooling on the plane of the water-cooled chassis. The cooling effect is good, and great convenience is brought to the design of the transmission device of the distributing device; the cooling device has good maintenance, disassembly and cooling enhancement effects, and simultaneously forms a good installation method.
Description
Technical Field
The utility model belongs to the technical field of low thermal conductivity coefficient material is thermal-insulated and circulating water cooling equipment, in particular to blast furnace ironmaking distributing device water-cooling airtight box combination cooling device adopts the aluminium silicate fiber felt thermal-insulated and adopts the suitable airtight space of high-pressure circulating water forced cooling equipment combination formation temperature to place water-cooling airtight box transmission and make its normal operating technique in the higher poisonous blast furnace ironmaking burner gas environment of high temperature high pressure dust content, has formed a good mounting method simultaneously.
Background
The top of the iron-smelting blast furnace is a furnace throat conical section, a furnace top steel ring (also called a furnace top flange) is welded on the furnace throat conical section, the distributor consists of four parts, namely a water-cooling airtight box, an alpha angle transmission assembly, a beta angle transmission assembly and a distribution chute assembly, the water-cooling airtight box comprises a central throat pipe, a double-layer slewing bearing, a transmission device, a top cover, a trunnion rotating sleeve, a water-cooling chassis, a box body and the like, and the water-cooling airtight box is arranged on the furnace top steel ring. The two are connected by bolts and sealed by metal gaskets. The water-cooling airtight box is located at the lowest part of the blast furnace top charging equipment and directly threatens by high-temperature charge level of a furnace throat, hot gas and dust, the temperature of the furnace top is about 200-350 ℃ under normal conditions, the temperature is 600 ℃ or even higher under an accident state, the blast furnace water-cooling airtight box is made into an airtight space, a transmission device which drives all chute assemblies exposed in the blast furnace gas environment to move is arranged in the airtight space, high-pressure circulating water is used for cooling, nitrogen is supplemented for balance sealing, and the requirement on working conditions is strict. Generally, the temperature of the furnace top is controlled to be 150-300 ℃, the normal temperature in the airtight box is controlled to be less than 70 ℃, the environmental conditions are normal working conditions of the distributing device, and if the temperature of the furnace top is too high and the duration is too long or the cooling effect is not good, the temperature in the water-cooling airtight box is increased, so that the parts of the water-cooling airtight box are blocked and stop rotating, and the normal operation and the service life of the distributing device are influenced. The airtight box is suitable for a good airtight space environment in temperature, so that convenience is brought to the design of the transmission device, and the gas consumption of the transmission device part in the airtight box for nitrogen reverse balance sealing and cooling water cooling is reduced.
Disclosure of Invention
An object of the utility model is to provide a blast furnace ironmaking distributing device water-cooling airtight case combination cooling device, the guarantee drives transmission place confined space's of chute subassembly motion normal temperature <70 ℃ to the difference in temperature is less, and the aluminium silicate fiber felt that will have low coefficient of heat conductivity is thermal-insulated to the part and adopts a confined space of high-pressure circulating water forced cooling equipment combination formation to place water-cooling airtight case transmission and make its normal operating.
The utility model comprises a central throat pipe 1, a cover 5, a first aluminum silicate fiber felt 6, a trunnion rotating sleeve 7, a thin steel plate 8, a second aluminum silicate fiber felt 9, a water-cooling chassis 10 and a box body 11. The central throat 1 is a fixed component, the geometric rotation center line of the central throat is also the center line of the distributor, and the central throat 1 is arranged in a furnace top gas area and consists of a water distribution disc 2, a crack water jacket 3 and a sealing bottom plate 4; the upper part of the central throat pipe 1 is provided with a water distribution disc 2, the middle part is provided with a crack water jacket 3, and the bottom part is provided with a water cooling channel sealing bottom plate 4; the water distribution plate 2 is arranged at the upper part of the central throat 1, cooling water is injected into the crack water jacket 3 and is recycled through an internal channel of the water distribution plate, the effect of changing the direction of the sealing cooling water up and down in the crack water jacket 3 is achieved, and meanwhile the sealing cooling water does not overflow; the sealing bottom plate 4 is arranged at the lower part of the central throat pipe 1, plays a role in changing the direction of the cooling water up and down in the crack water jacket 3, and meanwhile, the sealing cooling water does not overflow. The inner side of the crack water jacket 3 is arranged in a furnace gas area of the furnace top and is directly contacted with high-temperature and high-pressure furnace gas, heat is transferred to the outer side of the crack water jacket, and the temperature in the furnace gas sealing area is raised through film layer heat exchange. A cover 5 is arranged in the lower part of the trunnion rotating sleeve 7, a first aluminum silicate fiber felt 6 with low heat conductivity coefficient is filled in the middle, a high-temperature furnace top furnace gas area is separated from a furnace gas sealing area, and only a small amount of heat is transferred to the furnace gas sealing area. And a second aluminum silicate fiber felt 9 is plugged into the lower part of the water-cooled chassis 10 and is welded below the water-cooled chassis 10 by a thin steel plate 8 to fix the water-cooled chassis. The water-cooled base plate 10 is internally water-cooled, and little heat is transferred to the furnace gas sealing area in the direction.
The central throat pipe 1, the trunnion rotating sleeve 7, the water-cooling chassis 10 and the box body 11 act together to obtain a closed space with normal temperature of less than 70 ℃, thereby bringing great convenience to the design and operation of a transmission device.
The part for driving the material distribution of the chute component of the actuating mechanism of the distributing device is usually made into a rotary cylinder, called a trunnion rotating sleeve 7, and practice shows that the position of the trunnion rotating sleeve 7 is the main source of heat in the airtight box and is directly contacted with blast furnace gas, so that the trunnion rotating sleeve 7 is divided into three sections according to functions and is respectively subjected to heat insulation and high-pressure cooling water forced cooling. The trunnion rotating sleeve 7 rotates, the surface of an upper inner cylinder is in large clearance fit with the outer cylindrical surface of the central throat pipe 1 of the fixed part, and water cooling is arranged in the cylindrical surface; the middle section of the trunnion rotating sleeve 7 is insulated by low heat conductivity coefficient; the outer cylindrical surface of the lower section is in large clearance fit with the inner cylindrical surface of the water-cooling chassis 10, and water cooling and low heat conductivity coefficient are arranged for heat insulation, so that a sealed space furnace gas sealing area is formed by the central throat pipe 1, the trunnion rotating sleeve 7, the water-cooling chassis 10 and the box body 11 for installing the transmission device.
The central throat pipe crack of the utility model is cooled; the middle part of the trunnion rotating sleeve is insulated, and the lower part of the water-cooling chassis is insulated; and (5) performing spiral cooling on the plane of the water-cooled chassis. The combined cooling effect is good, and great convenience is brought to the design of a transmission device of the distributing device. The combined cooling device has good maintenance, disassembly and cooling enhancement effects, and simultaneously forms a good installation method.
Drawings
FIG. 1 is a design diagram of a cooling device combined with a water-cooling airtight box of a blast furnace iron-making distributor. The device comprises a central throat pipe 1, a water distribution plate 2, a crack water jacket 3, a sealing bottom plate 4, a cover 5, an aluminum silicate fiber felt I6, a trunnion rotating sleeve 7, a thin steel plate 8, an aluminum silicate fiber felt II 9, a water-cooling chassis 10 and a box body 11.
FIG. 2 shows the crack water jacket 3 unfolded (along)
Meter) graph.
Fig. 3 is a plan partial sectional view of the water-cooled base plate 10.
Detailed Description
The utility model comprises a central throat pipe 1, a cover 5, a first aluminum silicate fiber felt 6, a trunnion rotating sleeve 7, a thin steel plate 8, a second aluminum silicate fiber felt 9, a water-cooling chassis 10 and a box body 11.
1. And (3) cooling a central throat pipe crack: the central throat pipe 1 consists of a water distribution plate 2, a crack water jacket 3 and a sealing bottom plate 4; the upper part of the central throat pipe 1 is provided with a water distribution disc 2, the middle part is provided with a crack water jacket 3, the bottom part is provided with a water cooling channel sealing bottom plate 4, high-pressure cooling water flows in from an inlet of the water distribution disc, flows downwards and upwards for four times along the circumferential crack of the water jacket in the crack water jacket, and then flows out from an outlet of the water distribution disc, so that heat conducted to the inner wall of the central throat pipe is taken away. See fig. 2, which is a circumferential expansion diagram of the crack water jacket, reflecting the structure of the water cooling channel and the flow direction of the high-pressure cooling water.
2. Heat insulation: referring to fig. 1, an aluminum silicate fiber felt I6 is attached to the middle section of the trunnion rotating sleeve 7 and fixed by a cover 5, so that the heat insulation and the blast furnace gas scouring prevention function are realized. A plurality of small spaces are formed at the lower part of the water-cooling chassis 10, and an aluminum silicate fiber felt II 9 is plugged in and fixed by a thin steel plate 8, so that the heat insulation and the blast furnace gas scouring function are realized on the lower surface of the water-cooling chassis 10.
3. Spiral cooling of the plane of the water-cooled chassis: referring to fig. 3, two high-pressure circulating cooling water flows in a spiral manner inside the water-cooled base plate 10 to take away heat conducted to the water-cooled base plate, and the water-cooled channel structure and the flow direction of the high-pressure cooling water are reflected in the figure.
The cooling water of high-pressure circulation forcibly flows in the closed cooling channel, and the distributing device is cooled by adopting a closed cooling mode, so that the circulating water is not polluted. When the temperature detecting element detects that the temperature of the water-cooling airtight box is high, the cooling strength is increased by adjusting the water outlet pressure of cooling water, so that the temperature of the furnace gas sealing area in the water-cooling airtight box is ensured to be within an allowable range (below 70 ℃).
Claims (3)
1. A blast furnace ironmaking distributor water-cooling airtight box combined cooling device is characterized by comprising a central throat pipe (1), a cover (5), an aluminum silicate fiber felt I (6), a trunnion rotating sleeve (7), a thin steel plate (8), an aluminum silicate fiber felt II (9), a water-cooling chassis (10) and a box body (11); the central throat (1) is a fixed component, the geometric rotation center line of the central throat is also the center line of the distributor and is arranged in a furnace gas area at the top of the furnace, and the central throat (1) consists of a water distribution disc (2), a crack water jacket (3) and a sealing bottom plate (4); the upper part of the central throat pipe (1) is provided with a water distribution disc (2), the middle part is provided with a crack water jacket (3), and the bottom part is provided with a water-cooling channel sealing bottom plate (4); the inner side of the crack water jacket (3) is arranged in a furnace top furnace gas area and directly contacts with high-temperature and high-pressure furnace gas; a cover (5) is arranged in the lower part of the trunnion rotating sleeve (7), and a first aluminum silicate fiber felt (6) with low heat conductivity coefficient is filled in the middle; a second aluminum silicate fiber felt (9) is plugged into the lower part of the water-cooling chassis (10), and is welded below the water-cooling chassis (10) by a thin steel plate (8) to be fixed; the water is introduced into the water-cooled chassis (10).
2. The blast furnace ironmaking distributor water-cooled airtight box combined cooling device of claim 1, characterized in that the trunnion rotating sleeve (7) is divided into three sections according to functions, the inner cylindrical surface of the upper part of the trunnion rotating sleeve (7) is in large clearance fit with the outer cylindrical surface of the central throat pipe (1) of the fixed part, and the outer cylindrical surface of the lower part of the trunnion rotating sleeve (7) is in large clearance fit with the inner cylindrical surface of the water-cooled chassis (10).
3. The cooling device of the blast furnace ironmaking distributor water-cooling airtight box combination as claimed in claim 1, characterized in that a sealed space furnace gas sealing area is formed by the central throat (1), the trunnion swivel sleeve (7), the water-cooling chassis (10) and the box body (11) for installing the transmission device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020144690.9U CN212152363U (en) | 2020-01-22 | 2020-01-22 | Blast furnace ironmaking distributing device water-cooling airtight box combined cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020144690.9U CN212152363U (en) | 2020-01-22 | 2020-01-22 | Blast furnace ironmaking distributing device water-cooling airtight box combined cooling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212152363U true CN212152363U (en) | 2020-12-15 |
Family
ID=73711962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020144690.9U Withdrawn - After Issue CN212152363U (en) | 2020-01-22 | 2020-01-22 | Blast furnace ironmaking distributing device water-cooling airtight box combined cooling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212152363U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111118244A (en) * | 2020-01-22 | 2020-05-08 | 北京首钢国际工程技术有限公司 | Blast furnace ironmaking distributing device water-cooling airtight box combined cooling device |
-
2020
- 2020-01-22 CN CN202020144690.9U patent/CN212152363U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111118244A (en) * | 2020-01-22 | 2020-05-08 | 北京首钢国际工程技术有限公司 | Blast furnace ironmaking distributing device water-cooling airtight box combined cooling device |
| CN111118244B (en) * | 2020-01-22 | 2024-02-09 | 北京首钢国际工程技术有限公司 | Combined cooling device for water-cooling airtight box of blast furnace ironmaking distributor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20201215 Effective date of abandoning: 20240209 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20201215 Effective date of abandoning: 20240209 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |