CN202440536U - Steel strip heat treatment tempering afterheat recovery device - Google Patents
Steel strip heat treatment tempering afterheat recovery device Download PDFInfo
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- CN202440536U CN202440536U CN2012200134816U CN201220013481U CN202440536U CN 202440536 U CN202440536 U CN 202440536U CN 2012200134816 U CN2012200134816 U CN 2012200134816U CN 201220013481 U CN201220013481 U CN 201220013481U CN 202440536 U CN202440536 U CN 202440536U
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- tempering
- recovery device
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Abstract
The utility model provides a steel strip heat treatment tempering afterheat recovery device. The steel strip heat treatment tempering afterheat recovery device comprises an unrolling wheel, a rolling wheel and a steel strip connecting the unrolling wheel with the rolling wheel, wherein a heating furnace for performing heat treatment on the steel strip, a quenching device and a tempering furnace are sequentially arranged between the unrolling wheel and the rolling wheel, an afterheat absorption heat exchanger for vaporizing inlet water to steam is arranged on the steel strip between the tempering furnace and the rolling wheel, an afterheat release heat exchanger for liquefying the steam into outlet water is arranged on the steel strip between the unrolling wheel and the heating furnace, and the afterheat absorption heat exchanger is used for conveying the steam to the afterheat release heat exchanger through a steam conveying pipe. The steel strip heat treatment tempering afterheat recovery device has the advantages of high recovery rate of afterheat and simple structure.
Description
Technical field
The utility model relates to the thermal treatment field, is specifically related to a kind of steel band tempering heat treatment waste-heat recovery device.
Background technology
Steel band thermal treatment is generally wanted to be heated to 840 to 900 degree to steel band earlier; Make steel band organize complete austenitizing, be cooled fast to then below the martensite transformation temperature Mf, steel band is quenched; Making structural transformation is martensite; Be heated to 400 to 500 degree to steel band again and carry out tempering, making structural transformation is troostite, its naturally cooling rolling of relief.Energy-saving and emission-reduction are long-range strategy and policy of national economic development, and steel band thermal treatment will consume mass energy, energy-conservationly just have more important realistic meaning.After steel band was tempered, its temperature still more than 400 degree, had a large amount of tempering waste heats, generally all lets its naturally cooling, is dispersed into the tempering waste heat in the air, and this not only wastes energy, but also makes the plant produced environmental degradation.The waste heat of so-called steel band is meant steel band remaining heat after accomplishing Q-tempering; Steel band per ton has more than the 51KWh in that the waste heat after the tempering (be called for short tempering waste heat) is approximately per ton; Account for more than 35% of total energy of steel band heating; Factory with 20000 tons of steel bands of thermal treatment in 1 year is an example, and steel band tempering waste heat just has 1,020,000 KWh.Concerning enterprise, if can recycle these waste heats, not only can improve production environment, but also can reduce cost, can receive good economic benefits.
The heat treated UTILIZATION OF VESIDUAL HEAT IN mode of steel band has multiple, and its most simple and effective mode is to be used for the preheating steel band to waste heat through thermal conduction.The patent No. that we succeeded in developing in 2010 is " a kind of UTILIZATION OF VESIDUAL HEAT IN steel band heat treatment system " patent of " 201010230307.2 ", can reclaim the tempering waste heat of 10-15%.But the waste heat recovery rate of this system is lower, and structure is complicated.The low reason of waste heat recovery rate of this system: the one, pressing plate length is too short, makes that the time of heat exchange is too short, causes heat exchange amount few; The 2nd, the flooding quantity of the heat exchanger of tempering stove back is too big, makes the water temperature that draws low, has only about 70 degree, fails to turn to steam to steam, so heat passage efficient is low; The 3rd, pressing plate does not have attemperator, and heat distributes greatly, causes thermosteresis big.
Summary of the invention
The utility model technical problem to be solved is to provide a kind of steel band tempering heat treatment waste-heat recovery device, and the waste heat recovery rate is high, and simple in structure.
For solving above-mentioned existing technical problem; The utility model adopts following scheme: a kind of steel band tempering heat treatment waste-heat recovery device; The steel band that comprises hai roll wheel, winding wheel, connection hai roll wheel and winding wheel; Be provided with process furnace, quenching device and the tempering stove that steel band is heat-treated successively between said hai roll wheel and the winding wheel; Steel band between said tempering stove and the winding wheel is provided with the waste heat that water inlet is vaporizated into steam and absorbs heat exchanger, and the steel band between said hai roll wheel and the process furnace is provided with steam liquefaction be the waste heat rejected heat interchanger of water, said waste heat absorb heat exchanger through steam transmitting pipe with delivery of steam to waste heat rejected heat interchanger.
As preferably; It is identical with the structure of waste heat rejected heat interchanger that said waste heat absorbs heat exchanger; Said waste heat absorbs heat exchanger and comprises that symmetry is located at steel band two water tanks of both sides up and down; Said two water tanks are equipped with import and outlet, and the outlet that said waste heat absorbs the heat exchanger inner water tank is communicated with through steam transmitting pipe with the import of waste heat rejected heat interchanger inner water tank.Simple in structure, easily manufactured.
As preferably, be provided with flow deflector in the said water tank.Make water or steam directly flow through water tank, absorb heat or heat-sinking capability to increase, and have the samming effect along winding raod.
As preferably, the outside of said water tank is provided with thermal insulation layer.Play good insulation effect.
As preferably, the inboard of said water tank is provided with the protecting sheet that contacts with steel band.Protecting sheet adopts expanded graphite plate, and its capacity of heat transmission is strong, and frictional coefficient is little, can reduce the steel band resistance, and steel band is had provide protection.
As preferably, said steam transmitting pipe is located in process furnace and the tempering stove.Effectively steam transmitting pipe is incubated, removes adding attemperator in addition from, reduced manufacturing cost.
As preferably, said waste heat absorbs heat exchanger and also comprises top board, base plate, the fixing pillar of top board and base plate, and two water tanks of the both sides up and down of said steel band are connected on top board and the base plate.
As preferably, said top board is provided with compression cylinder, and the water tank of said steel band upside is connected on the compression cylinder and by its control and moves up and down.Easy to use.
As preferably, the top of the water tank of said steel band upside also is provided with slide plate, and the both sides of said slide plate are provided with the slide block that slips with pillar.Be convenient to the displacement that slides up and down of water tank, and water tank is played position-limiting action.
Beneficial effect:
The utility model adopts technique scheme that a kind of steel band tempering heat treatment waste-heat recovery device is provided, and the waste heat recovery rate is high, can reclaim 35% to 40% tempering waste heat, and simple in structure, easily manufactured.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the structural representation that waste heat absorbs heat exchanger in the utility model;
Fig. 3 is the internal structure synoptic diagram that waste heat absorbs the water tank in the heat exchanger in the utility model.
Embodiment
Extremely shown in Figure 3 like Fig. 1; A kind of steel band tempering heat treatment waste-heat recovery device; The steel band 1 that comprises hai roll wheel 2, winding wheel 3, connection hai roll wheel 2 and winding wheel 3; Be provided with process furnace 6, quenching device 7 and the tempering stove 8 that steel band 1 is heat-treated successively between said hai roll wheel 2 and the winding wheel 3; Steel band 1 between said tempering stove 8 and the winding wheel 3 is provided with the waste heat that water inlet is vaporizated into steam and absorbs heat exchanger 5, and said hai roll wheel 2 is provided with steel band 1 between the process furnace 6 steam liquefaction be the waste heat rejected heat interchanger 4 of water, said waste heat absorb heat exchanger 5 pass through steam transmitting pipe 10 with delivery of steam to waste heat rejected heat interchanger 4.The vaporization of water will absorb big calorimetric, and the liquefaction of water vapor can be emitted big calorimetric, utilizes the phase transformation of water can increase substantially heat exchanger effectiveness.It is identical with the structure of waste heat rejected heat interchanger 4 that said waste heat absorbs heat exchanger 5; Said waste heat absorbs heat exchanger 5 and comprises that symmetry is located at two water tanks 12 of the both sides up and down of steel band 1; Said two water tanks 12 are equipped with import 9 and outlet 11, and the outlet 11 that said waste heat absorbs heat exchanger 5 inner water tanks 12 is communicated with through transfer lime 10 with the import 9 of waste heat rejected heat interchanger 4 inner water tanks 12.Be provided with flow deflector 13 in the said water tank 12.The outside of said water tank 12 is provided with thermal insulation layer 14.The inboard of said water tank 12 is provided with the protecting sheet 21 that contacts with steel band 1.Said transfer lime 10 is located in process furnace 6 and the tempering stove 8.Said waste heat absorbs heat exchanger 5 and also comprises top board 15, base plate 16, the fixing pillar 17 of top board 15 and base plate 16, and two water tanks 12 of the both sides up and down of said steel band 1 are connected on top board 15 and the base plate 16.Said top board 15 is provided with compression cylinder 18, and the water tank 12 of said steel band 1 upside is connected on the compression cylinder 18 and by its control and moves up and down.The top of the water tank 12 of said steel band 1 upside also is provided with slide plate 19, and the both sides of said slide plate 19 are provided with the slide block 20 that slips with pillar 17.
During actual the use, steel band 1 sends from hai roll wheel 2, through process furnace 6 heating; Be elevated to 870 degree to temperature, be reduced to temperature of steel strips below the martensite transformation temperature Mf through quenching device 7, making structural transformation is martensite; The 8 heating tempering of tempered stove, making structural transformation is troostite, the temperature that steel band 1 comes out from tempering stove 8 is more than 400 degree; Absorb heat exchanger 5 through waste heat then, it is not too big that the control waste heat absorbs the flooding quantity of heat exchanger 5, after making water get into water tank 12 to absorb the tempering waste heat of steel bands; Can all seethe with excitement is vaporizated into water vapor, and steam is input in the waste heat rejected heat interchanger 4 through steam transmitting pipe 10 from exporting 11, and steam enters into water tank 12 from the import 9 of waste heat rejected heat interchanger 4; Pass to steel band 1 to heat, make steel band 1 be preheating to the 90-95 degree, steam liquefaction is flowed out from exporting 11 for water.Winter, room temperature was lower, and the intensification of steel band 1 is many, recyclable 40% waste heat; Summer, room temperature was high, and the intensification of steel band 1 is few, and the waste heat recovery rate is about 35%, and this device by utilizing waste heat recovery is high, and simple in structure, easily manufactured.Water tank 12 can be made with the thick stainless steel plate of 2mm, and water tank length is 1.2 meters, and wide is 30 centimetres, and height is 1 centimetre.
Claims (9)
1. steel band tempering heat treatment waste-heat recovery device; Comprise hai roll wheel (2), winding wheel (3), connect the steel band (1) that hai roll is taken turns (2) and winding wheel (3); Be provided with process furnace (6), quenching device (7) and the tempering stove (8) that steel band (1) is heat-treated successively between said hai roll wheel (2) and the winding wheel (3); It is characterized in that: the steel band (1) between said tempering stove (8) and the winding wheel (3) is provided with the waste heat absorption heat exchanger (5) that water inlet is vaporizated into steam; Steel band (1) between said hai roll wheel (2) and the process furnace (6) is provided with steam liquefaction is the waste heat rejected heat interchanger (4) of water, and said waste heat absorbs heat exchanger (5) and gives waste heat rejected heat interchanger (4) through steam transmitting pipe (10) with delivery of steam.
2. a kind of steel band tempering heat treatment waste-heat recovery device according to claim 1; It is characterized in that: it is identical with the structure of waste heat rejected heat interchanger (4) that said waste heat absorbs heat exchanger (5); Said waste heat absorbs heat exchanger (5) and comprises that symmetry is located at two water tanks (12) of the both sides up and down of steel band (1); Said two water tanks (12) are equipped with import (9) and outlet (11), and the outlet (11) that said waste heat absorbs heat exchanger (5) inner water tank (12) is communicated with through steam transmitting pipe (10) with the import (9) of waste heat rejected heat interchanger (4) inner water tank (12).
3. a kind of steel band tempering heat treatment waste-heat recovery device according to claim 2 is characterized in that: be provided with flow deflector (13) in the said water tank (12).
4. a kind of steel band tempering heat treatment waste-heat recovery device according to claim 2, it is characterized in that: the outside of said water tank (12) is provided with thermal insulation layer (14).
5. a kind of steel band tempering heat treatment waste-heat recovery device according to claim 2 is characterized in that: the inboard of said water tank (12) is provided with the protecting sheet (21) that contacts with steel band (1).
6. a kind of steel band tempering heat treatment waste-heat recovery device according to claim 2 is characterized in that: said steam transmitting pipe (10) is located in process furnace (6) and the tempering stove (8).
7. a kind of steel band tempering heat treatment waste-heat recovery device according to claim 2; It is characterized in that: said waste heat absorbs heat exchanger (5) and also comprises top board (15), base plate (16), the fixing pillar (17) of top board (15) and base plate (16), and two water tanks (12) of the both sides up and down of said steel band (1) are connected on top board (15) and the base plate (16).
8. a kind of steel band tempering heat treatment waste-heat recovery device according to claim 7; It is characterized in that: said top board (15) is provided with compression cylinder (18), and the water tank (12) of said steel band (1) upside is connected compression cylinder (18) and goes up and moved up and down by its control.
9. a kind of steel band tempering heat treatment waste-heat recovery device according to claim 8 is characterized in that: the top of the water tank (12) of said steel band (1) upside also is provided with slide plate (19), and the both sides of said slide plate (19) are provided with the slide block (20) that slips with pillar (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200134816U CN202440536U (en) | 2012-01-12 | 2012-01-12 | Steel strip heat treatment tempering afterheat recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200134816U CN202440536U (en) | 2012-01-12 | 2012-01-12 | Steel strip heat treatment tempering afterheat recovery device |
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| Publication Number | Publication Date |
|---|---|
| CN202440536U true CN202440536U (en) | 2012-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200134816U Expired - Lifetime CN202440536U (en) | 2012-01-12 | 2012-01-12 | Steel strip heat treatment tempering afterheat recovery device |
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| CN (1) | CN202440536U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102517434A (en) * | 2012-01-12 | 2012-06-27 | 浙江佰耐钢带有限公司 | Device for recovering waste heat in heat treatment tempering process of steel strip |
-
2012
- 2012-01-12 CN CN2012200134816U patent/CN202440536U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102517434A (en) * | 2012-01-12 | 2012-06-27 | 浙江佰耐钢带有限公司 | Device for recovering waste heat in heat treatment tempering process of steel strip |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120919 |