CN203360524U - Roll steel heating furnace - Google Patents
Roll steel heating furnace Download PDFInfo
- Publication number
- CN203360524U CN203360524U CN2013204305033U CN201320430503U CN203360524U CN 203360524 U CN203360524 U CN 203360524U CN 2013204305033 U CN2013204305033 U CN 2013204305033U CN 201320430503 U CN201320430503 U CN 201320430503U CN 203360524 U CN203360524 U CN 203360524U
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- Prior art keywords
- barricade
- steel
- heater
- long metal
- cooling
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- Expired - Fee Related
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- Y02P10/212—
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Abstract
The utility model provides a roll steel heating furnace. The furnace chamber of the roll steel heating furnace comprises a preheating section, a heating section and a soaking zone, which are arranged sequentially, wherein a retaining wall is arranged between the heating section and the soaking zone; metal pipelines are arranged inside the retaining wall; one end of each metal pipeline is connected with the down pipe of a steam pocket; the other end of each metal pipeline is connected with the ascension pipe of the steam pocket; water obtained after steam-water-mixture separation in the steam pocket enters into the metal pipelines from the down pipe, and then forms into a steam-water-mixture again to enter into the steam pocket from the ascension pipe after absorbing the heat quantity of the retaining wall in the metal pipelines. Compared with the prior art, the roll steel heating furnace provided by the utility model has the advantages that the evaporation cooling but not water cooling is adopted to cool the metal pipelines in the retaining wall between the heating section and the soaking zone, the metal pipelines can share the same set of an evaporation cooling system with a furnace ribbed tube, the other set of cooling water system is not required to be reconstructed additionally, investment, energy and consumption are reduced, the heat quantity can be recycled, the cooling effect is excellent, and the accident of retaining wall collapse, which is caused by fouling on the inner wall of a steel pipe of retaining wall hanging, can be avoided.
Description
Technical field
The utility model relates to a kind of process furnace, the heater for rolling steel that particularly a kind of Steel Mill uses.
Background technology
Heater for rolling steel is the main heating installation of Steel Mill, and its effect is heating steel billet to be easy to the temperature of rolling to rolling mill.The burner hearth of heater for rolling steel comprises preheating section, heating zone, soaking zone.In preheating section, by the flue gas heat of process furnace fuel combustion, steel billet is carried out to preheating, this section be take transmission of heat by convection as main, and radiative transfer is auxiliary, and flue-gas temperature is generally 800 ℃ of left and right.Heating zone is main for hot arc, improve fire box temperature steel billet is strengthened to heating, this section furnace temperature is generally 1200 ℃ of left and right, mainly with radiative transfer, steel billet is heated, owing to steel billet being strengthened to heating, the steel billet hull-skin temperature reaches the requirement of rolling, still, the temperature of inside steel billet forms " hard-core " far below surface temperature, forms section temperature poor on the transverse section of steel billet.The temperature general requirement billet surface temperature of rolling steel billet is generally 1200～1250 ℃ of left and right, section temperature is poor≤and 30 ℃, make steel billet meet the rolling requirement and must heat steel billet, make section temperature evenly and reach section temperature poor≤30 ℃, the effect of soaking zone is exactly that to heat steel billet poor with the section temperature that reduces steel billet, and the fire box temperature of soaking zone is generally 1280 ℃ of left and right.
Because steel billet is different at the heat effect of heating zone and soaking zone, and require the temperature difference of two sections, in order to create the temperature difference of two sections in heating furnace, generally between heating zone and soaking zone, add and hang barricade.
At present, the barricade between heating zone and soaking zone has several forms.Wherein a kind of is that furnace roof between heating zone and soaking zone is made into " U " type structure.This structure formation difficulty of construction is large, and the isolated effect between heating zone and soaking zone is bad, and furnace roof " U " type structural framework place temperature radiating effect is bad, and is easy to damage, and the heat insulation barricade on present process furnace seldom adopts this structure.Another kind is to add barricade in heating furnace, will separate to produce different heats between heating zone and soaking zone.Barricade generally forms ，Qi two ends, loop by the welding of two weldless steel tubes and is placed on the process furnace steel column, and an end is fixed, and the other end is fixing, so that the thermal expansion of steel pipe, adds two in the middle of weldless steel tube and hangs screw rod and hang and heating on the furnace roof crossbeam.The part of steel pipe in burner hearth be by the certain size welding anchoring hook of arranging, for fixing refractory castable.Barricade traverses the process furnace left and right sides in burner hearth, and the height of barricade is generally at 500～600mm.The weldless steel tube specification of barricade generally adopts φ 89～φ 108mm, this steel pipe must adopt cooling, all adopt before this water cooling, the weldless steel tube that exactly industrial cooling water is pumped into to barricade with recycle pump makes it cooling, import temperature of cooling water≤33 ℃, outlet temperature of cooling water≤55 ℃, water coolant flow velocity in weldless steel tube is general >=1m/s, thus otherwise the phenomenon that easily produces vaporization and inner-walls of duct fouling affects cooling performance.The process furnace cooling water system generally is comprised of water reservoir, cooling tower, water circulating pump (two the using and the reserved, pump power is 15 kilowatts/hour) and pipeline.Use cooling water system, the current consumption of its water circulating pump power consumption, if press process furnace year work 7500 hours, the electricity charge by 1 yuan of calculating of 1 kilowatt-hour, the annual electricity charge 15 * 7500 * 1=112500 is first=11.25 ten thousand yuan.Adopt the cooling process furnace of vaporization for furnace ribbed tube, it is cooling that the weldless steel tube of barricade adopts cooling water system to carry out, and has following defect:
Need build a set of cooling water system, the power consumption of not only waste money, and water circulating pump is many, waste is serious again, and the heat of water coolant can not reclaim, more seriously, because barricade is hung the steel pipe inner wall fouling, not only can affect the cooling performance of barricade, the accident that also may cause barricade to collapse occurs.
The utility model content
The utility model purpose is to provide a kind of heater for rolling steel, adopt the heating zone of the cooling heater for rolling steel of vaporization and the cooling employing water cooling of the metallic conduit in the barricade between soaking zone to solve furnace ribbed tube of the prior art, need build again a set of cooling water system, waste money not only, and the water circulating pump power consumption is many, the waste serious, and the heat of water coolant can not reclaim, more seriously because barricade is hung the steel pipe inner wall fouling, not only can affect the cooling performance of barricade, the technical matters that the accident that also may cause barricade to collapse occurs.
The utility model purpose is achieved through the following technical solutions:
A kind of heater for rolling steel, its burner hearth comprises preheating section, heating zone and the soaking zone set gradually, be provided with barricade between described heating zone and described soaking zone, be provided with metallic conduit in described barricade, one end of described metallic conduit is connected with the downtake of drum, the other end is connected with the upcast of described drum, water in described drum after the steam water interface separation enters described metallic conduit from described downtake, forms steam water interface after the heat of absorption barricade again and enter described drum from described upcast in described metallic conduit.
Preferably, described metallic conduit comprises at least one short metal tube and at least two long metal pipes that be arranged in parallel, and described short metal tube is connected to form " U " type pipeline with an end vertical seal of described two long metal pipes respectively.
Preferably, described " U " type install pipeline on the column of described barricade both sides, described long metal pipe horizontal positioned, the long metal pipe of top is connected with described upcast, the long metal pipe of below is connected with described downtake.
Preferably, described long metal pipe and described short metal tube are weldless steel tube.
Preferably, be provided with some gussets between described two long metal pipes.
Preferably, described gusset is steel plate.
Compared with prior art, the utility model has following beneficial effect:
The heating zone of heater for rolling steel of the present utility model and the metallic conduit in the barricade between soaking zone cooling do not adopt water cooling and adopts vaporization cooling, can share a set of evaporated cooling system with furnace ribbed tube, and do not need to build again in addition a set of cooling water system, have advantages of reduce investment outlay, energy-saving and cost-reducing, can also reclaim heat, good cooling results, also can avoid because barricade is hung the accident generation that the steel pipe inner wall fouling causes barricade to collapse.
The accompanying drawing explanation
The part-structure schematic diagram that Fig. 1 is heater for rolling steel of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, describe the utility model in detail.
Refer to Fig. 1, heater for rolling steel of the present utility model, the furnace ribbed tube of heater for rolling steel adopts vaporization cooling, its burner hearth comprises preheating section, heating zone and the soaking zone set gradually, be provided with barricade between heating zone and soaking zone, be provided with metallic conduit 1 in barricade, one end of metallic conduit 1 is connected with the downtake of drum, the other end is connected with the upcast of drum, water in drum after the steam water interface separation enters metallic conduit from the downtake of drum, forms steam water interface after the heat of absorption barricade again and enter drum from upcast in metallic conduit.The heating zone of heater for rolling steel of the present utility model and the metallic conduit in the barricade between soaking zone cooling do not adopt water cooling and adopts vaporization cooling, can share a set of evaporated cooling system with furnace ribbed tube, and do not need to build again in addition a set of cooling water system, have advantages of reduce investment outlay, energy-saving and cost-reducing, can also reclaim the heat recycling, good cooling results, also can avoid because barricade is hung the accident generation that the steel pipe inner wall fouling causes barricade to collapse.
In the utility model, metallic conduit 1 comprises at least one short metal tube 12 and at least two long metal pipes that be arranged in parallel 11, and short metal tube 12 is connected to form " U " type pipeline with an end vertical seal of two long metal pipes 11 respectively.In this example, metallic conduit 1 comprises a short metal tube 12 and 11 some gussets 13 of welding of 11, two long metal pipes of two long metal pipes that be arranged in parallel.
In the utility model, " U " type install pipeline on the steel column 2 of barricade both sides, long metal pipe 11 horizontal positioned, the long metal of top is connected with the upcast of drum, the long metal of below is connected with the downtake of drum.
In this example, long metal pipe 11 and short metal tube 12 are weldless steel tube.
In the utility model, be provided with some gussets 13 between two long metal pipes 11.In this example, gusset 13 is steel plate.Connected by some steel plates between two long metal pipes 11, can strengthen intensity and the rigidity of " U " type pipeline.
During work, water in drum after the steam water interface separation enters metallic conduit from the downtake of drum, absorb the heat of barricade in metallic conduit, the temperature of barricade is reduced, water after the absorption heat forms steam water interface, enter drum from upcast afterwards and carry out the carbonated drink separation, the steam in drum after the steam water interface separation enters steam pipe system and is input to the user.
Above disclosed be only several specific embodiments of the application, but the application is not limited thereto, the changes that any person skilled in the art can think of, all should drop in the application's protection domain.
Claims (6)
1. a heater for rolling steel, its burner hearth comprises preheating section, heating zone and the soaking zone set gradually, be provided with barricade between described heating zone and described soaking zone, be provided with metallic conduit in described barricade, it is characterized in that, one end of described metallic conduit is connected with the downtake of drum, the other end is connected with the upcast of described drum, water in described drum after the steam water interface separation enters described metallic conduit from described downtake, forms steam water interface after the heat of absorption barricade again and enter described drum from described upcast in described metallic conduit.
2. heater for rolling steel as claimed in claim 1, it is characterized in that, described metallic conduit comprises at least one short metal tube and at least two long metal pipes that be arranged in parallel, and described short metal tube is connected to form " U " type pipeline with an end vertical seal of described two long metal pipes respectively.
3. heater for rolling steel as claimed in claim 2, it is characterized in that, described " U " type install pipeline on the column of described barricade both sides, described long metal pipe horizontal positioned, the long metal pipe of top is connected with described upcast, and the long metal pipe of below is connected with described downtake.
4. heater for rolling steel as claimed in claim 2, is characterized in that, described long metal pipe and described short metal tube are weldless steel tube.
5. heater for rolling steel as claimed in claim 2, is characterized in that, between described two long metal pipes, is provided with some gussets.
6. heater for rolling steel as claimed in claim 5, is characterized in that, described gusset comprises steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204305033U CN203360524U (en) | 2013-07-18 | 2013-07-18 | Roll steel heating furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204305033U CN203360524U (en) | 2013-07-18 | 2013-07-18 | Roll steel heating furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203360524U true CN203360524U (en) | 2013-12-25 |
Family
ID=49808316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013204305033U Expired - Fee Related CN203360524U (en) | 2013-07-18 | 2013-07-18 | Roll steel heating furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203360524U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103352115A (en) * | 2013-07-18 | 2013-10-16 | 上海宝钢节能技术有限公司 | Steel rolling heating furnace |
-
2013
- 2013-07-18 CN CN2013204305033U patent/CN203360524U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103352115A (en) * | 2013-07-18 | 2013-10-16 | 上海宝钢节能技术有限公司 | Steel rolling heating furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHANGHAI BAOSTEEL ENERGY-SAVING + ENVIRONMENTAL-PR Free format text: FORMER NAME: SHANGHAI BAOSTEEL ENERGY TECHNOLOGY CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 201999 Baoshan District, G Road, Lane No. 550, No. 7, business building, floor 2, level 3, level Patentee after: SHANGHAI BAOSTEEL ENERGY-SAVING ENVIRONMENTAL PROTECTION TECHNOLOGY CO., LTD. Address before: 201999, room 1813, No. 3245, Mudanjiang Road, Baoshan District, Shanghai, Baoshan District Patentee before: Shanghai Baosteel Energy Tech Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131225 Termination date: 20180718 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |