CN219899658U - Cooling bed waste heat recovery system of rolling mill - Google Patents
Cooling bed waste heat recovery system of rolling mill Download PDFInfo
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- CN219899658U CN219899658U CN202320885056.4U CN202320885056U CN219899658U CN 219899658 U CN219899658 U CN 219899658U CN 202320885056 U CN202320885056 U CN 202320885056U CN 219899658 U CN219899658 U CN 219899658U
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- heat
- cooling bed
- heat exchange
- working cover
- cover
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- 238000001816 cooling Methods 0.000 title claims abstract description 44
- 239000002918 waste heat Substances 0.000 title claims abstract description 31
- 238000011084 recovery Methods 0.000 title claims abstract description 27
- 238000005096 rolling process Methods 0.000 title claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 65
- 230000007246 mechanism Effects 0.000 claims abstract description 41
- 238000004321 preservation Methods 0.000 claims abstract description 7
- 238000009413 insulation Methods 0.000 claims description 19
- 238000001914 filtration Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 230000009466 transformation Effects 0.000 abstract description 7
- 238000012423 maintenance Methods 0.000 abstract description 6
- 229910000831 Steel Inorganic materials 0.000 description 9
- 239000010959 steel Substances 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 230000009286 beneficial effect Effects 0.000 description 8
- 230000002349 favourable effect Effects 0.000 description 7
- 238000009434 installation Methods 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910001566 austenite Inorganic materials 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
Classifications
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- 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
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model discloses a waste heat recovery system of a cooling bed of a rolling mill, which comprises a working cover arranged above the cooling bed; a heat exchange mechanism is arranged in the working cover; one end of the heat exchange mechanism extends out of the working cover and is connected to the cold water tank; the other end of the heat exchange mechanism extends out of the working cover and is connected to the water unit; the top of the working cover is connected with a heat collection mechanism; the heat collecting mechanism is connected to the heat using unit; the working cover comprises a plurality of heat preservation boards which are assembled and formed, and solves the problems that the existing cooling bed is subjected to space limitation when technical transformation is carried out and waste heat recovery equipment is additionally arranged, and the surrounding space is possibly further limited after the transformation is finished, so that overhaul and maintenance are inconvenient.
Description
Technical Field
The utility model relates to the technical field of metallurgical waste heat recovery, in particular to a cooling bed waste heat recovery system of a rolling mill.
Background
Strip-shaped steel is mostly formed by billet rolling. The billet is heated to 1150-1250 ℃ in a heating furnace before rolling, the billet is ensured to be rolled in an austenite region, and the temperature is 20-30 ℃ above A3 point; and (5) conveying the rolled steel into a stepping cooling bed for cooling. The steel rolling finished product is cooled in the cooling bed through continuous movement, and in general, the cooling bed can release great heat in the cooling process, so that objective economic benefit can be brought to productive enterprises by recycling waste heat generated by the cooling bed, and the working environment is improved. At present, the cooling bed has fewer waste heat recovery devices, because the existing cooling bed is subjected to space limitation when the waste heat recovery devices are additionally arranged in the technical transformation, and the surrounding space can be further limited after the transformation is finished, so that the problems of inconvenient overhaul and maintenance are caused.
For example, in chinese patent publication CN113976644a, a device for recovering waste heat of a cold bed of a finished hot-rolled steel billet is disclosed, wherein a relatively closed working space is formed around the cold bed, the working space covers a heat insulation structure and is provided with a hot-rolled steel billet inlet and a cooled steel billet outlet, both the hot-rolled steel billet inlet and the cooled steel billet outlet are closed by an air curtain, and the gas circulation between the periphery of the cold bed and the external space in the working space is cut off; one side of the working space is provided with a nitrogen distributing device for distributing nitrogen into the working space, the other corresponding side is provided with a wind catching cover connected with the absorption heat pump, and nitrogen hot air flow in the wind catching cover passes through the absorption heat pump system to be subjected to heat exchange to become low-temperature nitrogen flow. The waste heat recovery device can isolate the working space around the cooling bed from the external space, so that the subsequent overhaul and maintenance of the cooling bed are inconvenient, and the technical transformation cost is high.
As another example, in chinese patent publication CN202122045173.3, a waste heat recovery device for rolled steel products is disclosed, which comprises a plurality of groups of recovery systems uniformly arranged along the length direction of the cooling bed, wherein the recovery systems comprise a heat collecting hood, a hot air collecting branch pipe, a hot air collecting main pipe and a draught fan; the heat collection covers are a plurality of, are all arranged above the cooling bed and are arranged along the width direction of the cooling bed, the top of each heat collection cover is communicated to a hot air collection main pipe through a hot air collection branch pipe, an induced draft fan is arranged on the hot air collection main pipe, and an air outlet of the induced draft fan is connected to other heat utilization units of a factory. In such a waste heat recovery device, heat collecting covers are arranged at intervals on the cooling bed, so that the improvement cost is low, but a large amount of heat is actually dissipated.
Disclosure of Invention
The utility model aims to solve the problems that the existing cooling bed is subjected to space limitation when technical transformation is carried out on the existing cooling bed and waste heat recovery equipment is additionally arranged, and the surrounding space is possibly further limited after the transformation is finished, so that the overhaul and the maintenance are inconvenient, and provides a cooling bed waste heat recovery system of a rolling mill.
The aim of the utility model is achieved by the following technical scheme: a waste heat recovery system of a cooling bed of a rolling mill comprises a working cover arranged above the cooling bed; a heat exchange mechanism is arranged in the working cover; one end of the heat exchange mechanism extends out of the working cover and is connected to the cold water tank; the other end of the heat exchange mechanism extends out of the working cover and is connected to the water unit; the top of the working cover is connected with a heat collection mechanism; the heat collecting mechanism is connected to the heat using unit; the working cover comprises a plurality of heat preservation plates which are assembled and formed;
further, the heat exchange mechanism comprises a heat exchange coil, a water inlet pipe and a water outlet pipe; the heat exchange coil is hoisted and arranged in the working cover; the water inlet pipe of the heat exchange coil is connected with the cold water tank through the water inlet pipe; the water outlet pipe of the heat exchange coil is connected with a water unit through a water outlet pipe; the water inlet pipe is provided with a water pump and a first control valve; the water outlet pipe is provided with a second control valve;
further, the heat collecting mechanism comprises a heat collecting cover, an air pipe and a fan; the heat absorbing cover is connected with the fan through an air pipe; the air outlet of the fan is connected to the heat utilization unit; a filtering mechanism is arranged in the heat collection cover;
further, the working cover also comprises a top plate and an upright post; the upright posts are connected with the edges of the top plate; the side edges of the heat-insulating plates are arranged on the upright posts;
further, the heat collecting covers are arranged on the top plate at intervals; the heat exchange mechanism is connected with the top plate;
furthermore, buckling edges are arranged on two sides of the heat-insulating plate corresponding to the upright posts; the buckling edge is provided with a mounting hole; the surface of the heat-insulating plate is provided with a hanging ring;
the further technical scheme is that a buckle is arranged at one side edge of the heat insulation board; and a clamping groove is formed in the edge of the other side of the heat insulation plate.
The utility model has the following advantages:
1. the working cover is arranged above the cooling bed, so that a proper closed area is formed above the cooling bed, heat dissipation is reduced, and waste heat recovery efficiency is improved;
2. the working cover comprises a plurality of heat preservation plates which are assembled, and the shape and the size of the working cover can be assembled according to the size of the field space, so that the working cover is beneficial to adapting to the existing environment of a factory according to local conditions; meanwhile, when the cooling bed is required to be overhauled and maintained, part of the heat insulation plate can be properly disassembled, so that the overhauling and the maintenance are convenient;
3. the heat exchange mechanism is arranged in the working cover, so that the temperature of cold water is increased after heat exchange in the working cover, the cold water can be used for a factory domestic water unit after hot water is output, and the waste heat utilization efficiency is improved;
4. the heat collecting mechanism is further arranged at the top of the working cover, so that the hot air can be further utilized, the hot air can be output to other heat utilization units in a factory, and the waste heat utilization efficiency is improved.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is a schematic structural view of the working hood.
Fig. 3 is a top view of the work hood.
Fig. 4 is a schematic structural view of the insulation board.
In the figure: 1. a cooling bed; 2. a working cover; 3. a heat exchange mechanism; 4. a cold water tank; 5. a water unit; 6. a heat collecting mechanism; 7. a heat utilization unit; 8. a thermal insulation board; 9. a water inlet pipe; 10. a water outlet pipe; 11. a heat exchange coil; 12. a heat collecting cover; 13. an air duct; 14. a blower; 15. a top plate; 16. a column; 17. buckling edges; 18. a mounting hole; 19. a hanging ring; 20. and (5) a buckle.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.
In addition, the embodiments of the present utility model and the features of the embodiments may be combined with each other without collision.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, or are directions or positional relationships conventionally understood by those skilled in the art, are merely for convenience of describing the present utility model and for simplifying the description, and are not to indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Example 1: as shown in fig. 1 to 4, a waste heat recovery system of a cooling bed 1 of a rolling mill comprises a working hood 2 arranged above the cooling bed 1; a heat exchange mechanism 3 is arranged in the working cover 2; one end of the heat exchange mechanism 3 extends out of the working cover 2 and is connected to the cold water tank 4; the other end of the heat exchange mechanism 3 extends out of the working cover 2 and is connected to a water using unit; the top of the working cover 2 is connected with a heat collecting mechanism 6; the heat collecting mechanism 6 is connected to a heat using unit 7; the working cover 2 comprises a plurality of heat preservation plates 8 which are assembled and formed; in this embodiment, the insulation board 8 is made of a conventional commercially available insulation material which can withstand high temperature, and any one of reasonable materials can be selected according to the needs.
The working cover 2 is arranged above the cooling bed 1, the working cover 2 is beneficial to forming a proper closed area above the cooling bed 1, reducing heat dissipation and improving waste heat recovery efficiency; the working cover 2 comprises a plurality of heat preservation plates 8 which are assembled and formed, and the shape and the size of the working cover 2 can be assembled according to the size of the field space, so that the working cover is beneficial to adapting to the existing environment of a factory according to local conditions; meanwhile, when the cooling bed 1 needs to be overhauled and maintained, part of the heat insulation plate 8 can be properly disassembled, so that the overhauling and the maintenance are convenient; the heat exchange mechanism 3 is arranged in the working cover 2, so that the temperature of cold water is increased after heat exchange in the working cover 2, the cold water can be used as a factory domestic water unit 5 after hot water is output, and the waste heat utilization efficiency is improved; the heat collecting mechanism 6 is further arranged at the top of the working cover 2, so that the hot air can be further utilized, the hot air can be output to other heat utilization units in a factory, and the waste heat utilization efficiency is improved.
The heat exchange mechanism 3 comprises a heat exchange coil 11, a water inlet pipe 9 and a water outlet pipe 10; the heat exchange coil 11 is arranged in the working cover 2 in a hoisting manner; the water inlet pipe 9 of the heat exchange coil 11 is connected with the cold water tank 4 through the water inlet pipe 9; the water outlet pipe 10 of the heat exchange coil 11 is connected with a water unit through the water outlet pipe 10; the water inlet pipe 9 is provided with a water pump and a first control valve; a second control valve is arranged on the water outlet pipe 10; in the embodiment, the heat exchange coil 11 is arranged at a proper height in the working cover 2 in an S-shaped coiling mode, and is arranged at the top of the working cover 2 according to a conventional hoisting mechanism or a pipe hoop, and any reasonable connection and installation mode can be selected according to the requirement; in the embodiment, the cold water pipe introduces cold water in the cold water tank 4 into the heat exchange coil 11, and the heat exchange coil 11 is arranged in the working cover 2, so that the heat exchange area is increased, and the cold water is conveyed to the water using unit through the water outlet pipe 10 after the temperature of the cold water is increased; in the embodiment, the water pump, the first control valve and the second control valve are all conventional commercially available products, and any one reasonable model structure and a proper connection and installation mode can be selected according to the needs; in this embodiment, the water pump is beneficial to pumping the suction in the cold water tank 4 into the heat exchange coil 11; the first control valve and the second control valve facilitate control of flow. Through holes are arranged on two sides of the working cover 2 corresponding to the water inlet pipe 9 and the water outlet pipe 10.
The heat collecting mechanism 6 comprises a heat collecting cover 12, an air pipe 13 and a fan 14; the heat absorbing cover is connected with a fan 14 through an air pipe 13; the air outlet of the fan 14 is connected to the heat utilization unit 7; a filtering mechanism is arranged in the heat collection cover 12; in this embodiment, the heat collecting cover 12, the air duct 13 and the fan 14 are conventional commercially available products, and any one reasonable model structure and a proper connection mode can be selected according to the needs, so that the heat absorbing cover is beneficial to improving the heat absorbing range on the working cover 2, and hot air is conveyed to a place needing heat through the air duct 13 and the fan 14. In this embodiment, the air duct 13 is further provided with a conventional commercially available pressure gauge and an air valve.
The working cover 2 also comprises a top plate 15 and a stand column 16; the upright posts 16 are connected with the edges of the top plate 15; the side edges of the heat-insulating plate 8 are arranged on the upright posts 16; in this embodiment, the top plate 15 and the upright post 16 are made of conventional materials with certain mechanical strength, and any one of reasonable materials can be selected according to the needs; in this embodiment, the upright posts 16 are used to support the top plate 15 at a suitable height, and in this embodiment, the upright posts 16 and the top plate 15 are beneficial to improving the overall structural strength of the working cover 2; in this embodiment, stand 16 sets up at roof 15 edge, is favorable to the heated board 8 to install on stand 16, is favorable to forming the enclose that has the heat preservation effect around roof 15, is favorable to reducing heat dissipation, is favorable to improving waste heat recovery efficiency, is favorable to nimble dismouting heated board 8 simultaneously, is favorable to carrying out the installation according to the field space condition according to local condition.
The heat collecting covers 12 are arranged on the top plate 15 at intervals; the heat exchange mechanism 3 is connected with the top plate 15; in the embodiment, the heat collecting covers 12 are arranged on the top plate 15 at intervals, and the density of the heat collecting covers 12 is gradually reduced from the feeding end of the cooling bed 1 to the discharging end of the cooling bed 1, so that the heat utilization efficiency of a high temperature area is improved; in this embodiment, the heat exchange mechanism 3 is connected with the top plate 15, which is beneficial to improving the stability of the installation of the heat exchange mechanism 3.
Buckling edges 17 are arranged on two sides of the heat-insulating plate 8 corresponding to the upright posts 16; the buckling edge 17 is provided with a mounting hole 18; the surface of the heat insulation board 8 is provided with hanging rings 19; in this embodiment, the fastening edges 17 provided at the two side edges of the insulation board 8 are beneficial to fastening on the edge of the upright post 16, and then the insulation board 8 is detachably mounted on the upright post 16 by mounting a fixing piece, such as a bolt, on the mounting hole 18; and the hanging rings 19 are arranged on the surface of the heat-insulating plate 8, so that the heat-insulating plate 8 can be hoisted conveniently.
A buckle 20 is arranged at one side edge of the heat insulation plate 8; a clamping groove is formed in the edge of the other side of the heat-insulating plate 8; in this embodiment, the edge of one side of the insulation board 8 is provided with the buckle 20, and the other side is provided with the clamping groove, which is favorable for the stability of the assembly connection after the upper insulation board 8 and the lower insulation board 8 are respectively fixed on the upright post 16, and then the two insulation boards are assembled together through the buckle 20 and the clamping groove.
Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.
Claims (7)
1. A waste heat recovery system of a cooling bed of a rolling mill comprises a working cover arranged above the cooling bed; the method is characterized in that: a heat exchange mechanism is arranged in the working cover; one end of the heat exchange mechanism extends out of the working cover and is connected to the cold water tank; the other end of the heat exchange mechanism extends out of the working cover and is connected to the water unit; the top of the working cover is connected with a heat collection mechanism; the heat collecting mechanism is connected to the heat using unit; the working cover comprises a plurality of heat preservation plates which are assembled and formed.
2. The rolling mill cooling bed waste heat recovery system according to claim 1, wherein: the heat exchange mechanism comprises a heat exchange coil, a water inlet pipe and a water outlet pipe; the heat exchange coil is hoisted and arranged in the working cover; the water inlet pipe of the heat exchange coil is connected with the cold water tank through the water inlet pipe; the water outlet pipe of the heat exchange coil is connected with a water unit through a water outlet pipe; the water inlet pipe is provided with a water pump and a first control valve; and a second control valve is arranged on the water outlet pipe.
3. The rolling mill cooling bed waste heat recovery system according to claim 2, wherein: the heat collecting mechanism comprises a heat collecting cover, an air pipe and a fan; the heat collection cover is connected with the fan through an air pipe; the air outlet of the fan is connected to the heat utilization unit; and a filtering mechanism is arranged in the heat collection cover.
4. A rolling mill cooling bed waste heat recovery system according to claim 3, wherein: the working cover also comprises a top plate and an upright post; the upright posts are connected with the edges of the top plate; the side edges of the heat-insulating plates are arranged on the upright posts.
5. The rolling mill cooling bed waste heat recovery system according to claim 4, wherein: the heat collecting covers are arranged on the top plate at intervals; the heat exchange mechanism is connected with the top plate.
6. The rolling mill cooling bed waste heat recovery system according to claim 4, wherein: buckling edges are arranged on two sides of the heat-insulating plate corresponding to the upright posts; the buckling edge is provided with a mounting hole; and a hanging ring is arranged on the surface of the heat insulation plate.
7. The rolling mill cooling bed waste heat recovery system according to claim 4, wherein: a buckle is arranged at one side edge of the heat insulation plate; and a clamping groove is formed in the edge of the other side of the heat insulation plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320885056.4U CN219899658U (en) | 2023-04-19 | 2023-04-19 | Cooling bed waste heat recovery system of rolling mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320885056.4U CN219899658U (en) | 2023-04-19 | 2023-04-19 | Cooling bed waste heat recovery system of rolling mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219899658U true CN219899658U (en) | 2023-10-27 |
Family
ID=88466802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320885056.4U Active CN219899658U (en) | 2023-04-19 | 2023-04-19 | Cooling bed waste heat recovery system of rolling mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219899658U (en) |
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2023
- 2023-04-19 CN CN202320885056.4U patent/CN219899658U/en active Active
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