CN218120649U - Galvanized H-shaped steel water cooling device and cooling equipment - Google Patents
Galvanized H-shaped steel water cooling device and cooling equipment Download PDFInfo
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- CN218120649U CN218120649U CN202221461046.XU CN202221461046U CN218120649U CN 218120649 U CN218120649 U CN 218120649U CN 202221461046 U CN202221461046 U CN 202221461046U CN 218120649 U CN218120649 U CN 218120649U
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Abstract
The utility model discloses a galvanized H-shaped steel water cooling device and cooling equipment, which belong to the field of H-shaped steel hot galvanizing, and comprise a water cooling component arranged between conveying roller ways; the water cooler is arranged on the periphery of the galvanized H-shaped steel and close to one side of the galvanized H-shaped steel, water spray nozzles are uniformly distributed on one side of the galvanized H-shaped steel, and gas sealing assemblies are arranged at the positions of two ends of the water cooling assembly on the conveying roller way. The utility model has the advantages that: set up gas seal subassembly at water-cooling subassembly both ends, with water-cooling subassembly spun water control in the middle of two gas seal subassemblies, realized the continuous water-cooling of water cooling section, avoided water to be taken next process.
Description
Technical Field
The utility model relates to a H shaped steel hot-galvanize field particularly, relates to a zinc-plated H shaped steel water cooling plant and cooling arrangement.
Background
The existing hot-rolled H-shaped steel hot galvanizing process is that a hot-rolled H-shaped steel finished product cut into sections is purchased by a galvanizing processing factory at the downstream of a hot-rolled H-shaped steel factory, and after heating and removing surface impurities, galvanizing is carried out in a galvanizing bath to finish the production of galvanized H-shaped steel products.
Because the hot-rolled H-shaped steel finished product needs to be heated to a higher temperature before galvanization, the problems of higher comprehensive energy consumption and unfavorable carbon reduction and emission reduction exist, the 'tandem rolling and tandem plating' process is adopted, the subsequent galvanization process treatment is directly carried out by utilizing sufficient heat of 850 ℃ high temperature after the hot-rolled H-shaped steel is finally rolled, and the problem of high energy consumption of the galvanized H-shaped steel can be creatively solved without energy consumption and heating. If the 'continuous rolling and continuous plating' process is adopted, the galvanized surface zinc coating of the galvanized H-shaped steel is required to be cooled, the existing galvanized H-shaped steel is generally cooled in a water tank, the galvanized H-shaped steel is soaked in the water tank, the length of the galvanized H-shaped steel is not more than 12 meters, the process belongs to discontinuous operation, and the process cannot be used for cooling the hot-dip zinc coating on the surface of the continuous hot-dip H-shaped steel.
In view of the above, the present inventors have made extensive studies to meet this need.
SUMMERY OF THE UTILITY MODEL
In order to overcome the problem that the cooling of the galvanized H-shaped steel piece in the prior art can not be used for cooling the hot galvanizing coat on the surface of the continuous hot-dip H-shaped steel, the utility model provides a galvanized H-shaped steel water cooling device, which comprises a water cooling component arranged between conveying roller ways; the water cooling assembly is arranged on the periphery of the galvanized H-shaped steel and close to the periphery of the galvanized H-shaped steel, water spray nozzles are uniformly distributed on one side of the galvanized H-shaped steel, and gas sealing assemblies are arranged at the positions of two ends of the water cooling assembly on the conveying roller way.
Set up gas seal assembly at water-cooling subassembly both ends, with water-cooling subassembly spun water control in the middle of two gas seal assemblies, realized the continuous water-cooling of water cooling section, avoided water to be taken next process.
Preferably, the gas sealing assembly comprises a high-pressure blowing pipe and an air blower for conveying high-pressure gas into the high-pressure blowing pipe, the outlet of the air blower is connected with the inlet of the high-pressure blowing pipe, the high-pressure blowing pipe is sleeved outside the galvanized H-shaped steel, and a plurality of air nozzles are uniformly distributed on one side, close to the galvanized H-shaped steel, of the high-pressure blowing pipe.
Preferably, the high-pressure blowing pipe is one of a circular ring pipe, a square pipe or an H-shaped pipe.
Preferably, the air injection direction of the air nozzle inclines towards the water cooling assembly, and the inclination angle is smaller than 30 degrees.
Preferably, the water cooling assembly comprises more than two groups of cylindrical water coolers arranged along the length direction of the conveying roller way.
Preferably, the lower side of the cylindrical water cooler is provided with a water inlet for water inlet, and the upper side of the cylindrical water cooler is provided with a water outlet for water outlet.
The water cooling problem of the water cooling after the continuous galvanizing of the complicated section of the H-shaped steel can not be solved in the prior art, the deformation and distortion of the galvanized H-shaped steel can be caused by the uneven water cooling, and even the waste product can not be corrected in the next straightening process. This patent adopts the large-traffic water cooler of multistage low pressure, realizes that H shaped steel cools off to the room temperature after continuous galvanization, then straightens and press polish process. The design of the cylindrical water cooler and the densely arranged cooling water spray nozzles inside the cylindrical water cooler surround the galvanized H-shaped steel to realize large-flow uniform water spray cooling, so that the H-shaped steel cannot deform.
The water cooling after the galvanization is to reduce the temperature of the galvanized H-shaped steel from 150 ℃ to below 80 ℃ through water cooling so as to meet the temperature requirement of the subsequent straightening process. The hot rolling H-shaped steel continuous rolling and continuous plating process has the maximum running speed of 5 m/s after rolling, needs large-flow cooling water to be uniformly cooled, wherein the water cooling process consists of a plurality of groups of cylindrical water coolers, and the number of the water coolers to be put into operation can be selected according to the inlet and outlet temperatures. The computer model controls the size of the water inlet automatic regulating valve of the water cooler, and ensures that the temperature meets the process requirements of the next procedure.
Preferably, the water cooling system is used for recycling water in the water cooling assembly; the water-cooling circulation system comprises a trench, a sedimentation tank, a cooling tower, a tubular heat exchanger and a water-cooling assembly, wherein the trench is arranged under the water-cooling assembly, the sedimentation tank is arranged at a trench water outlet, a cooling tower water inlet is connected with the sedimentation tank water outlet, a tubular heat exchanger water inlet is arranged at a cooling tower water outlet, and the water-cooling assembly is arranged at a tubular heat exchanger water outlet.
Preferably, a first water pump is arranged between the sedimentation tank and the cooling tower, and a second water pump is arranged between the cooling tower and the tubular heat exchanger.
Preferably, a main pipeline and a branch pipeline are arranged between the tube heat exchanger and the water cooling assembly, the main pipeline is connected with the tube heat exchanger, and each cylindrical water cooler on the water cooling assembly is correspondingly connected with one branch pipeline through a connector hose; the main pipeline is provided with a main valve, and the branch pipelines are provided with automatic regulating valves.
The utility model also provides a zinc-plated H shaped steel cooling arrangement, including foretell water cooling plant.
Has the advantages that:
adopt the utility model discloses technical scheme produces beneficial effect as follows:
(1) Set up gas seal subassembly at water-cooling subassembly both ends, with water-cooling subassembly spun water control in the middle of two gas seal subassemblies, realized the continuous water-cooling of water cooling section, avoided water to be taken next process.
(2) The water cooling in the prior art can not solve the problem of uniform water cooling after continuous galvanizing of the complex section of the H-shaped steel, and uneven water cooling can cause deformation and distortion of the galvanized H-shaped steel and even cause that the subsequent straightening process can not correct and waste products are caused. This patent adopts the large-traffic water cooler of multistage low pressure, realizes that the water cooling is to the room temperature after the continuous zinc-plating of H shaped steel, then carries out the aligning and press polish process. The design of the cylindrical water cooler is characterized in that cooling water spray nozzles are densely arranged inside the cylindrical water cooler, large-flow uniform water spray cooling is realized by surrounding galvanized H-shaped steel, and the H-shaped steel cannot deform.
(3) The water cooling after the galvanization is to reduce the temperature of the galvanized H-shaped steel from 150 ℃ to below 80 ℃ through water cooling so as to meet the temperature requirement of the subsequent straightening process. The hot rolling H-shaped steel continuous rolling and continuous plating process has the maximum running speed of 5 m/s after rolling, needs large-flow cooling water for uniform cooling, and the water cooling process consists of a plurality of groups of cylindrical water coolers, and the number of the water coolers to be put into operation can be selected according to the inlet and outlet temperatures. The computer model controls the size of the water inlet automatic regulating valve of the water cooler, and ensures that the temperature meets the process requirements of the next procedure.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings which are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and that for those skilled in the art, other related drawings can be obtained according to these drawings without inventive efforts.
FIG. 1 is a schematic view of a better air cooling device for galvanized H-shaped steel of the present invention;
FIG. 2 is a schematic cross-sectional view of a preferred galvanized H-shaped steel cooling wind box according to the present invention;
FIG. 3 is a schematic view of a longitudinal sectional structure of a better galvanized H-shaped steel cooling air box of the present invention;
FIG. 4 is a schematic view of the water cooling apparatus for galvanized H-shaped steel according to the present invention;
FIG. 5 is a schematic cross-sectional view of a better galvanized H-beam cylindrical water cooler of the present invention;
FIG. 6 is a schematic diagram of the longitudinal sectional structure of the better galvanized H-shaped steel cylindrical water cooler of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
According to the embodiment, the galvanized H-shaped steel is cooled by the cold air bellow, so that a zinc layer on the surface of the H-shaped steel is cooled and solidified, the temperature of the water cooling section is ensured to be below the martensite quenching temperature of the metal matrix of the H-shaped steel, the generation of a harmful tissue structure of the steel matrix is avoided, the risk of contact between molten metal and water is solved, and explosion is prevented. The specific implementation mode is as follows:
as shown in fig. 1-6, the galvanized H-shaped steel cooling device comprises a conveying roller way 1, and an air cooling device 2 and a water cooling device 3 which are sequentially arranged on the conveying roller way 1.
The galvanized H-shaped steel air cooling device 2 comprises a cooling air box 21 arranged between the conveying roller ways 1; the cooling air box 21 is of a hollow structure, air holes 22 for feeding cold air are uniformly distributed on the inner walls of two sides of the cooling air box 21, and a cold air system 23 for conveying cold air to the cooling air box 21 is connected to the outer wall of the cooling air box 21. The galvanized H-shaped steel is cooled by the cold air bellow, so that a zinc layer on the surface of the H-shaped steel is cooled and solidified, the temperature of the water cooling section is ensured to be below the martensite quenching temperature of the metal matrix of the H-shaped steel, the generation of a harmful tissue structure of the steel matrix is avoided, the risk of contact between molten metal and water is solved, and explosion is prevented. In addition, the air cooling belongs to slow cooling, so that the formation of a zinc-iron alloy layer is promoted powerfully, and the zinc coating and the matrix are combined more firmly.
The air cooling is used for cooling in advance, so that the surface of a plating layer is prevented from being immediately contacted with water to generate brittle cracking and buckling phenomena, the occurrence of a martensite harmful structure after the H-shaped steel base metal is quenched by water is avoided, the steel base structure is a pearlite and ferrite structure, and the steel performance is better.
The cooling air box 21 is provided with 5 sections of cooling air boxes along the length direction of the galvanized H-shaped steel 100, and air holes 22 for cold air inlet are uniformly distributed on the inner walls of the two sides of the 5 sections of cooling air boxes 21. The inner wall is punched to form an air hole, cold air cools the galvanized H-shaped steel through the air hole, and the air hole is arranged to be beneficial to cooling the H-shaped steel with a complex section.
Adopt multistage cooling bellows to through the cold wind flow to every section cooling bellows control, the cooling process of the galvanizing coat on accurate control H shaped steel surface builds comparatively ideal cooling environment for it, reaches better cooling effect, has realized hot rolling H shaped steel tandem rolling continuous plating technology, and even continuous high-efficient cooling ensures that the cooling of zinc-plated H shaped steel is indeformable, and quality and output promote by a wide margin. And meets the control requirement of subsequent straightening temperature.
The cold air system 23 includes a motor 231, a blower 232, an air cooling structure 233 and a cold air header pipe 234, the input end of the cold air header pipe 234 is connected with the air cooling structure 233, the output end of the cooling header pipe 234 is connected with the air inlet 211 of the cooling air box 21, the blower 232 is driven by the motor 231, and the air outlet of the blower 232 is connected with the air cooling structure 233.
The air cooling structure 233 includes a condenser 235, a throttle expansion valve 236, an air conditioner evaporator 237 and a compressor 238, wherein an input end of the compressor 238 is connected to an output end of the air conditioner evaporator 237, an input end of the air conditioner evaporator 237 is connected to the throttle expansion valve 236, an input end of the throttle expansion valve 236 is connected to an output end of the condenser 235, an input end of the condenser 235 is connected to an output end of the compressor 238, and an air outlet of the blower 232 is connected to the air conditioner evaporator 237. The volume flow of the blower is 150000Nm3/h, the power of the evaporator of the air conditioner is 120KW, and the air temperature at the outlet of the cold air main pipe is 15 ℃.
The cold air main pipe 234 is communicated with each section of the cooling air box 21 through a cold air branch pipe 239. Each cooling branch pipe 239 is provided with a butterfly valve 240 and a flow meter 241 for monitoring flow.
And the inlet and the outlet of the cooling air box are respectively provided with a temperature collector 242, and the cooling air box further comprises a controller (not shown in the figure), the output end of the temperature collector 242 is connected with the input end of the controller, and the output end of the controller is connected with the input ends of the motor and the air cooling structure. The temperature collector is used for collecting the inlet temperature and the outlet temperature of the cooling air box and feeding the temperatures back to the controller, and the controller controls the motor and the air cooling structure as required to realize real-time adjustment of the cooling temperature. The cooling windbox 21 is made of a Q235 steel sheet.
As shown in fig. 4-6, the galvanized H-beam water cooling device 3 comprises a water cooling assembly 31 arranged between the conveying roller tables 1; the water cooling assembly 31 is arranged on the periphery of the galvanized H-shaped steel 100 and close to the periphery of the galvanized H-shaped steel 100, water spray nozzles 32 are uniformly distributed on one side of the galvanized H-shaped steel 100, and gas sealing assemblies 33 are arranged at the positions of two ends of the water cooling assembly 31 on the conveying roller way 1.
Set up gas seal assembly at water-cooling subassembly both ends, with water-cooling subassembly spun water control in the middle of two gas seal assemblies, realized the continuous water-cooling of water cooling section, avoided water to be taken next process.
The gas sealing assembly 33 comprises a high-pressure blowing pipe 331 and a blower (not shown in the figure) for delivering high-pressure gas into the high-pressure blowing pipe, wherein an outlet of the blower is connected with an inlet of the high-pressure blowing pipe, and the high-pressure blowing pipe 331 is sleeved outside the galvanized H-shaped steel 100 and a plurality of gas nozzles 332 are uniformly distributed on one side, close to the galvanized H-shaped steel, of the high-pressure blowing pipe 331.
The high-pressure blowing pipe 331 is a circular ring pipe, a square pipe or an H-shaped pipe, the air injection direction of the air injection nozzle 332 is inclined towards the water cooling component 31, and the inclination angle is smaller than 30 degrees.
The water cooling assembly 31 comprises more than two groups of cylindrical water coolers 311 arranged along the length direction of the conveying roller way 1. The cylindrical water cooler 311 is provided at a lower side thereof with a water inlet 312 for inlet water and at an upper side thereof with a water outlet 313 for outlet water. A barrel-shaped water cooler is adopted, the upper end and the lower end of the barrel-shaped water cooler are connected with a water inlet pipeline, and a plurality of cylindrical nozzles are densely distributed in the barrel-shaped water cooler, so that the zinc-plated H-shaped steel can be uniformly cooled by low-pressure large-flow water supply.
The water cooling in the prior art can not solve the problem of uniform water cooling after continuous galvanizing of the complex section of the H-shaped steel, and uneven water cooling can cause deformation and distortion of the galvanized H-shaped steel and even cause that the subsequent straightening process can not correct and waste products are caused. This patent adopts the large-traffic water cooler of multistage low pressure, realizes that H shaped steel cools off to the room temperature after continuous galvanization, then straightens and press polish process. The design of the cylindrical water cooler and the densely arranged cooling water spray nozzles inside the cylindrical water cooler surround the galvanized H-shaped steel to realize large-flow uniform water spray cooling, so that the H-shaped steel cannot deform.
The water cooling after the galvanization is to reduce the temperature of the galvanized H-shaped steel from 150 ℃ to below 80 ℃ through water cooling so as to meet the temperature requirement of the subsequent straightening process. The hot rolling H-shaped steel continuous rolling and continuous plating process has the maximum running speed of 5 m/s after rolling, needs large-flow cooling water for uniform cooling, and the water cooling process consists of a plurality of groups of cylindrical water coolers, and the number of the water coolers to be put into operation can be selected according to the inlet and outlet temperatures. The computer model controls the size of the water inlet automatic regulating valve of the water cooler, and ensures that the temperature meets the process requirements of the next procedure.
Preferably, a water cooling circulation system 34 for recycling water in the water cooling assembly 31 is further included; the water cooling circulation system 34 comprises a trench 341, a sedimentation tank 342, a cooling tower 343, a tubular heat exchanger 344 and a water cooling module 31, wherein the trench 341 is arranged under the water cooling module 31, the sedimentation tank 342 is arranged at the outlet of the trench 341, the water inlet of the cooling tower 343 is connected with the outlet of the sedimentation tank 342, the water inlet of the tubular heat exchanger 344 is connected with the outlet of the cooling tower 343, and the water cooling module 31 is arranged at the outlet of the tubular heat exchanger 344. Considering the problem that the temperature of cooling water is lower than 20 ℃ in winter in the north, the galvanized H-shaped steel is easy to cool and deform due to too low water temperature, a tubular heat exchanger is additionally arranged in a water circulation system, and the temperature of the cooling water is controlled to be between 25 ℃ and 40 ℃ by utilizing the waste heat of low-grade products in a hot rolling plant.
A first water pump 345 is arranged between the sedimentation tank 342 and the cooling tower 343, and a second water pump 346 is arranged between the cooling tower and the tubular heat exchanger. A main pipeline 347 and branch pipelines 348 are arranged between the tube heat exchanger 344 and the water cooling module 31, the main pipeline is connected with the tube heat exchanger, and each cylindrical water cooler on the water cooling module 31 is correspondingly connected with one branch pipeline 348 through a joint hose; the main pipe 347 is provided with a main valve 349, and the branch pipe is provided with an automatic regulating valve 350.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A galvanized H-shaped steel water cooling device is characterized by comprising a water cooling assembly arranged between conveying roller ways; the water cooling assembly is arranged on the periphery of the galvanized H-shaped steel and close to one side of the galvanized H-shaped steel, water spray nozzles are uniformly distributed on one side of the galvanized H-shaped steel, and gas sealing assemblies are arranged at the positions of two ends of the water cooling assembly on the conveying roller way.
2. The water cooling device for galvanized H-shaped steel according to claim 1, wherein the gas sealing assembly comprises a high-pressure blowing pipe and an air blower for delivering high-pressure gas into the high-pressure blowing pipe, an outlet of the air blower is connected with an inlet of the high-pressure blowing pipe, and a plurality of air nozzles are uniformly distributed on one side, close to the galvanized H-shaped steel, of the high-pressure blowing pipe, and are sleeved outside the galvanized H-shaped steel.
3. The galvanized H-shaped steel water cooling device according to claim 2, wherein the high-pressure blowing pipe is one of a circular ring pipe, a square pipe or an H-shaped pipe.
4. The galvanized H-shaped steel water cooling device according to claim 3, wherein the air injection direction of the air injection nozzles is inclined towards the water cooling assembly, and the inclination angle is smaller than 30 degrees.
5. The galvanized H-shaped steel water cooling device according to claim 1, characterized in that the water cooling assembly comprises more than two groups of cylindrical water coolers arranged along the length direction of the conveying roller way.
6. The water cooling device for the galvanized H-shaped steel according to claim 5, characterized in that a water inlet for water inlet is formed in the lower side of the cylindrical water cooler, and a water outlet for water outlet is formed in the upper side of the cylindrical water cooler.
7. The galvanized H-shaped steel water cooling device according to claim 6, characterized by further comprising a water cooling circulation system for recycling water in the water cooling assembly; the water cooling circulation system comprises a trench, a sedimentation tank, a cooling tower, a tubular heat exchanger and a water cooling assembly, wherein the trench is arranged under the water cooling assembly, the sedimentation tank is arranged at a trench water outlet, a cooling tower water inlet is connected with the sedimentation tank water outlet, a tubular heat exchanger water inlet is arranged at the cooling tower water outlet, and the water cooling assembly is arranged at a tubular heat exchanger water outlet.
8. The galvanized H-shaped steel water cooling device according to claim 7, characterized in that a first water pump is arranged between the sedimentation tank and the cooling tower, and a second water pump is arranged between the cooling tower and the tubular heat exchanger.
9. The galvanized H-shaped steel water cooling device according to claim 8, characterized in that a main pipeline and branch pipelines are arranged between the tube heat exchanger and the water cooling component, the main pipeline is connected with the tube heat exchanger, and each cylindrical water cooler on the water cooling component is correspondingly connected with one branch pipeline through a connector hose; the main pipeline is provided with a main valve, and the branch pipelines are provided with automatic regulating valves.
10. A galvanized H-beam cooling apparatus comprising the water cooling device according to any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221461046.XU CN218120649U (en) | 2022-06-10 | 2022-06-10 | Galvanized H-shaped steel water cooling device and cooling equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221461046.XU CN218120649U (en) | 2022-06-10 | 2022-06-10 | Galvanized H-shaped steel water cooling device and cooling equipment |
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| CN218120649U true CN218120649U (en) | 2022-12-23 |
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| CN202221461046.XU Active CN218120649U (en) | 2022-06-10 | 2022-06-10 | Galvanized H-shaped steel water cooling device and cooling equipment |
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