CN220461749U - Water spray atomizing cooler, system and complete equipment for eliminating internal stress of hot rolled H-shaped steel - Google Patents

Abstract

The utility model discloses a water spray atomization cooler and a system and complete equipment for eliminating internal stress of hot rolled H-shaped steel, which belong to the technical field of hot rolled H-shaped steel production. The beneficial effects of the utility model are as follows: the mechanical swing type assembly is adopted to control the swing bracket to swing, so that water mist sprayed from the atomizing nozzle assembly is more uniform, and the uniform cooling effect of the hot rolled H-shaped steel is improved.

Description

Water spray atomizing cooler, system and complete equipment for eliminating internal stress of hot rolled H-shaped steel

Technical Field

The utility model relates to the technical field of hot-rolled H-shaped steel production, in particular to a water spray atomization cooler and system and complete equipment for eliminating internal stress of hot-rolled H-shaped steel.

Background

The web plate and the flange deform in different deformation areas in the universal rolling process of the H-shaped steel, so that the deformation rule and the metal flow rule are very complex, and the deformation is uneven, so that the phenomenon of uneven deformation is necessarily caused in the rolling process of the H-shaped steel. In addition, the web is thinner, the flange is thicker, the heat dissipation area of the web is larger, the heat dissipation area of the flange is smaller in the rolling process, particularly the thickness of the R angle part is larger, and the heat dissipation area is smaller, so that the temperature is highest. The web and the flange are deformed unevenly, so that the web and the flange are waved, even cracked and the like in the H-shaped steel rolling process. In addition, the web plate and the flange are not uniformly deformed, so that the tongue shape of the end part of the H-shaped steel is necessarily formed. Temperature difference exists between the section of the H-shaped steel and the non-uniform deformation: the flange temperature is measured to be 50-80 ℃ higher than the web temperature, so that residual stress and residual deformation are necessarily present in the H-shaped steel after rolling, the service performance of the H-shaped steel is affected, and the problem of residual stress of the H-shaped steel is caused in the cooling process after rolling of the H-shaped steel.

In principle, the higher the carbon steel heat treatment temperature is, the longer the heat preservation time is, the more thorough the stress elimination is, the annealing temperature of the carbon steel is 550-625 ℃, and the heat preservation time has a direct relation with the thickness and structure of the product. The hot rolled H-shaped steel taking square billets as raw materials is heated by a heating furnace, and after 5 to 7 times of reciprocating rolling by a roughing mill (BD mill), a head is cut and enters a universal mill to roll 11 times of H-shaped steel continuously. After ultra-fast cooling treatment, the mixture enters a cooling bed for air cooling and water spraying for cooling. The hot rolled H-shaped steel is rolled by a horizontal roller and a lateral pressure vertical roller during universal rolling due to special rolling shape, so that deformation internal stress is increased. When ultra-fast cooling is performed, the phase change causes huge internal stress. The existence of internal stress has great influence on the safe service of the hot rolled H-shaped steel, and the safe practical service life of the steel structure is related.

The utility model patent application publication No. CN106939371A discloses a method for eliminating internal stress and improving the dimensional accuracy of an ultra-high strength steel thin-wall workpiece, which comprises the steps of firstly, placing the workpiece in a high-pressure gas quenching vacuum furnace, and then, carrying out vacuum quenching on the workpiece at a temperature of 1.33 multiplied by 10 ^-1 Pa～1.33×10 ^{- 3} Heating the workpiece to 420-440 ℃ at a heating rate of 10-13 ℃/min under Pa vacuum degree, preserving heat for 4-5 hours when the tempering temperature is 80-100 ℃ lower than the tempering temperature of the heat treatment process, and then slowly cooling to room temperature under the protection of high-purity nitrogen of 1.5 bar; then using a vibration exciter to continuously vibrate the workpiece for 40min at the frequency of 60-98 Hz and the rotating speed of 3600-5700 rpm and adopting 5 different frequencies; the device is aimed at the ultra-high-strength steel thin-wall workpiece, and the device related to heating, cooling and vibration is not introduced.

In 12 months 2018, the section steel mill Li Tongjing of Laiwu division, mountain steel stock, analyzes the influence of residual stress after cooling hot rolled H-shaped steel, the distribution of steel residual stress, and the control measures of steel residual stress in the paper "research on residual stress of hot rolled large H-shaped steel". In 6 months 2019, yuan Kun of China Swolin engineering technology Co., ltd. In paper "research on hot-dip Zinc part Hot-rolled H-section Steel residual stress removal" analyzed the effect of hot-dip Zinc technology on Hot-rolled H-section Steel residual stress removal.

The deformation analysis and the finite element simulation of different H-shaped steels under the same condition are compared and analyzed in the university of North and east university Wang Junlei of the Shuoshi thesis on the condition of ultra-fast cooling of the H-shaped steels, and the H-shaped steels are observed and the outward expansion phenomenon and the residual stress distribution condition are observed.

The prior art is not suitable for the industrialization process for eliminating the internal stress of the hot rolled H-shaped steel products, and particularly is suitable for realizing the internal stress elimination process for continuously producing the hot rolled H-shaped steel. The annealing cooling in the internal stress elimination process of the hot rolled H-shaped steel is an indispensable flow, and the main modes of controlled cooling after rolling of the high-temperature steel include jet cooling, pressure jet cooling, curtain laminar cooling, atomization cooling, pipe internal flow water cooling and the like, and the upper edge is cooled after finishing rolling of the H-shaped steel, and the lower edge is not easy to dissipate heat, so that the problems of low temperature of the upper edge part and high temperature of the lower edge part are caused, but the problems of low cooling efficiency and insufficient cooling uniformity still exist by adopting a water spray cooling mode at the lower part of the H-shaped steel at present.

In view of this, the present inventors have conducted intensive studies in response to this need, and have made the present utility model.

Disclosure of Invention

In order to overcome the defect that no industrialization technology for eliminating internal stress is available for hot-rolled H-shaped steel products in the prior art, particularly an internal stress elimination technology capable of realizing continuous production of hot-rolled H-shaped steel, the utility model provides a method for eliminating internal stress of hot-rolled H-shaped steel, wherein the hot-rolled H-shaped steel from a steel rolling heating furnace zone enters a grouping bed zone for grouping after dephosphorization, rough continuous rolling, transverse shearing, finish continuous rolling, ultra-fast cooling, air cooling, water spray cooling, hot air drying, eccentric roller vibration and straightening; residual stress is released according to the heat treatment annealing principle and the eccentric roller vibration mode.

In order to further solve the problems that the upper edge is cooled after the H-shaped steel finish rolling and the lower edge is difficult to dissipate heat, so that the temperature of the upper edge part is low and the temperature of the lower edge part is high, and the cooling efficiency is low and the cooling uniformity is insufficient due to the adoption of a water spray cooling mode at the lower part of the H-shaped steel finish rolling. The specific technical scheme is as follows:

the utility model provides a water spray atomizing cooler, includes fixed bracket, swing bracket and atomizing nozzle subassembly, the swing bracket passes through mechanical swing formula subassembly and installs on the fixed bracket, swing bracket upper surface is along its length direction upward evenly distributed has a plurality of atomizing nozzle subassembly.

The mechanical swing type assembly is adopted to control the swing bracket to swing, so that water mist sprayed from the atomizing nozzle assembly is more uniform, and the uniform cooling effect of the hot rolled H-shaped steel is improved.

Here, by controlling the cooling effect with high efficiency by spray cooling, water is atomized by pressurized gas, and the air flow makes the water droplets contact the hot rolled H-section steel uniformly, so that stagnant water in the section steel can be removed, and uneven cooling of the hot rolled H-section steel can be improved.

Preferably, the mechanical swing type assembly comprises a left hydraulic driving cylinder and a right hydraulic driving cylinder, one end of the left hydraulic driving cylinder is hinged to the left side of the upper surface of the fixed bracket, and the other end of the left hydraulic driving cylinder is hinged to the left side of the lower surface of the swing bracket; one end of the right hydraulic driving cylinder is hinged to the right side of the upper surface of the fixed bracket, and the other end of the right hydraulic driving cylinder is hinged to the right side of the lower surface of the swing bracket.

Preferably, the fixed bracket, the swing bracket, the left hydraulic driving cylinder and the right hydraulic driving cylinder are parallel to each other, and the length direction of the first hinge shaft is perpendicular to the length direction of the swing bracket.

Preferably, the distances between the two hinge points between the fixed bracket and the left hydraulic driving cylinder and the right hydraulic driving cylinder are equal to the distances between the midpoints of the upper surfaces of the fixed bracket, and the distances between the two hinge points between the swing bracket and the left hydraulic driving cylinder and the right hydraulic driving cylinder are equal to the distances between the lower surfaces of the swing bracket.

Preferably, two ends of the swing bracket in the length direction are respectively provided with one mechanical swing assembly.

Preferably, the mechanical swing assembly further comprises a support column, wherein the lower end of the support column is fixedly installed at the middle position of the upper surface of the fixed bracket, the upper end of the support column is hinged at the middle position of the lower surface of the swing bracket, and a second hinge shaft at the hinge point of the support column and the swing bracket is parallel to the first hinge shaft.

Preferably, the upper surface of the swing bracket is an outwards convex arched surface, and the lower surface of the swing bracket is a plane; the atomizing nozzle component is fixedly arranged at the middle position of the arched surface, and when the lower surface of the swinging bracket is in a horizontal state, the spraying direction of the atomizing nozzle component is vertically upward.

Preferably, the atomizing nozzle assembly comprises a water spraying pipeline, an air pipeline and atomizing nozzles, wherein the water spraying pipeline and the air pipeline are fixedly arranged on the arched surface of the swing bracket, the length direction of the water spraying pipeline and the length direction of the air pipeline are the same as the length direction of the swing bracket, and a plurality of atomizing nozzles are fixedly arranged on the water spraying pipeline and the air pipeline along the length direction of the swing bracket; the bottom of each atomizing nozzle is communicated with the water spraying pipeline and the air pipeline, and the top of each atomizing nozzle is provided with a nozzle opening.

The utility model also provides a water spraying atomization cooling system which comprises a cooling bed fixing beam and the water spraying atomization cooler arranged below the cooling bed fixing beam, wherein a cooling water recovery device is arranged below the water spraying atomization cooler, and a water outlet of the cooling water recovery device is connected with a water inlet of the atomization nozzle assembly. The water spray atomization cooling system adopts a combination of a water spray atomization cooler and a cooling water recovery device, so that the problems of uniform and efficient cooling and cooling water recovery and utilization after the hot rolled H-shaped steel is annealed are solved.

Preferably, the cooling water recovery device comprises a cooling water collecting tank, a branch pipeline and a return pipeline, wherein the cooling water collecting tank is positioned right below the water spraying atomization cooler, and the bottom of the cooling water collecting tank is communicated with the return pipeline through the branch pipeline.

The whole water atomization cooling system is arranged below the cooling bed and is arranged along the length direction of the strip-shaped hot-rolled H-shaped steel, so that the stepping operation of the whole cooling bed is not hindered.

Wherein the water atomization device adopts a clean water pipeline of 0.4MPa, a compressed air system pipeline of 0.7MPa and a water atomization nozzle.

The utility model also provides complete equipment for eliminating the internal stress of the hot rolled H-shaped steel, and the water spraying atomization cooling system is adopted.

The complete equipment for eliminating the internal stress of the hot rolled H-shaped steel sequentially comprises a dephosphorization machine, a rough continuous rolling machine, a head cutting flying shear, a finish continuous rolling machine, an ultra-fast cooling machine, a cooling bed heat preservation device, an air cooling machine, a water spray cooling machine, a hot air dryer, a core deflection roller conveyor, a straightening machine, a grouping bed area, a cutting machine, a machine inspection bench area and a packing machine, wherein the front end and the rear end of the rough continuous rolling machine are respectively provided with a centering translation bed. The water spray cooler adopts the water spray atomization cooling system.

The beneficial effects are that:

the technical scheme of the utility model has the following beneficial effects:

(1) The mechanical swing type assembly is adopted to control the swing bracket to swing, so that water mist sprayed from the atomizing nozzle assembly is more uniform, and the uniform cooling effect of the hot rolled H-shaped steel is improved.

(2) The high-efficiency control of the cooling effect is realized through spray cooling, pressurized gas is used for atomizing water, air flow enables water drops to be in uniform contact with the hot rolled H-shaped steel, and the retained water in the steel can be removed, so that the uneven cooling of the hot rolled H-shaped steel is improved.

(3) The water spray atomization cooling system adopts a water spray atomization cooler and a cooling water recovery device to be combined, and the water spray atomization cooler is provided with an atomization nozzle, and is contacted with the surface of the hot-rolled H-shaped steel after being atomized by water, so that the problems of uniform and efficient cooling and cooling water recovery and utilization after the hot-rolled H-shaped steel is annealed are solved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a complete set of equipment for relieving internal stress of a hot rolled H-section steel according to the preferred embodiment of the utility model;

FIG. 2 is a schematic structural view of a heat treatment apparatus for relieving internal stress of a hot rolled H-shaped steel according to the present utility model;

FIG. 3 is a schematic view of the internal structure of a preferred heat radiator of the present utility model;

FIG. 4 is a schematic side view of a preferred heat radiator of the present utility model;

FIG. 5 is a schematic front view of a preferred water spray atomizing cooling system according to the present utility model;

FIG. 6 is a schematic side view of a preferred water spray atomizing cooling system according to the present utility model.

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. 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.

As shown in fig. 1 to 4, the internal stress eliminating method of the hot rolled H-section steel comprises the steps of dephosphorizing, rough continuous rolling, transverse shearing, finish continuous rolling, ultra-fast cooling, air cooling, water spray cooling, hot air drying, eccentric roller vibration and straightening the hot rolled H-section steel 101 from a steel rolling heating furnace area 170, and then entering a grouping bed area for grouping; residual stress is released according to the heat treatment annealing principle and the eccentric roller vibration mode.

As shown in fig. 1, the complete equipment for eliminating internal stress of the hot rolled H-section steel sequentially comprises a dephosphorization machine 100, a roughing mill 200, a head cutting flying shear 300, a finishing mill 400, an ultra-fast cooler 500, a cooling bed heat preservation device 600, an air cooler 700, a water spray cooler 800, a hot air dryer 900, a core shift roller conveyor 110, a straightener 120, a grouping bed area 130, a cutting machine 140, an inspection rack area 150 and a packer 160, wherein the front end and the rear end of the roughing mill 200 are provided with centering translation beds 210.

Because the hot-rolled H-shaped steel is ultra-rapidly cooled to the air cooling process and needs to be transported through a roller way, and the hot-rolled H-shaped steel has a certain length (100-150 m) in the roller way transportation process, the problem of uneven temperature in the length direction of the hot-rolled H-shaped steel is solved in the transportation process, and the elimination of internal stress of the hot-rolled H-shaped steel is influenced.

To solve this problem, in this embodiment, a heat treatment device 1 is disposed between the ultra-fast cooler 500 and the cooling bed heat preservation device 600, and comprises a soaking transportation roller way 11 and a heat radiation system 102 for performing heat radiation heating on the hot rolled H-section steel, the heat radiation system 102 comprises a plurality of groups of heat radiators 12 arranged on the soaking transportation roller way 11 along the length direction of the soaking transportation roller way 11, each group of heat radiators 12 comprises two heat radiators 12 symmetrically disposed on the upper and lower positions of the hot rolled H-section steel 101, the radiating surface of the heat radiator 12 located on the upper side is opposite to the upper surface of the hot rolled H-section steel 101, and the radiating surface of the heat radiator 12 located on the lower side is opposite to the lower surface of the hot rolled H-section steel 101. And a plurality of groups of heat radiators are arranged on the soaking transportation roller way, and the temperature of the whole hot rolled H-shaped steel in the length direction is in an equilibrium state by heating the hot rolled H-shaped steel in sections, so that uniform annealing is realized.

Here, the limited space of the steel rolling workshop is reasonably utilized, and the original transport roller way for removing the cooling bed after rolling is innovated, so that the transport roller way has a heat treatment function, and the internal stress of the H-shaped steel product after rolling is uniformly annealed and eliminated.

As a preferred embodiment, the radiation surface on the heat radiator 12 is a wave-shaped radiation plate 121.

The wave-shaped radiation plate 121 is in a convex arch shape along the wave-shaped width direction, and the wave-shaped length direction of the wave-shaped radiation plate 121 is the same as the length direction of the soaking transportation roller way 11.

Because the hot rolled H-shaped steel has special rolling shape, the temperature difference of the flange and the web plate is needed to be considered during annealing, the temperature of an R fillet at the joint of the flange and the web plate is focused, a wave-shaped radiation plate is adopted, the wave-shaped radiation plate is designed into an outwards convex arch shape in the wave-shaped width direction, a sufficient heat source can be provided for a heat treatment roller way, the temperature difference of the flange and the web plate is balanced, the temperature of the R fillet at the joint of the flange and the web plate is uniform, and the temperature of the heat treatment roller way is flexibly regulated and controlled so as to reduce the temperature difference of the flange and the web plate of the hot rolled H-shaped steel and the temperature difference of the length direction of the hot rolled H-shaped steel to eliminate the influence caused by internal stress annealing.

As a preferred embodiment, as shown in fig. 3 and 4, the heat radiator 12 includes a radiation body 122, and a wave-shaped radiation plate 121 is provided on a side of the radiation body 122 adjacent to the hot rolled H-section steel 101; the utility model discloses a wave-shaped radiation plate, including the wave-shaped radiation plate 121, the radiation body 122 is gone up and is kept away from wave-shaped radiation plate 121 one side is provided with burning nozzle 123, be provided with air inlet 124 and gas inlet 125 on the burning nozzle 123, air inlet 124 links to each other with outside air through air duct 126, booster fan, gas inlet 125 links to each other with the gas station through gas duct 127.

A flue branch pipe 128 is further arranged on the side, away from the wave-shaped radiation plate 121, of the heat radiator 12, and the flue branch pipe 128 is communicated with a flue 129; the flue branch 128 and the combustion burner 123 are located on both sides of the heat radiator 12, respectively.

The heat radiator adopts a gas heat radiator, the gas heat radiator is arranged between roller tables, pulse combustion is controlled, and the heating is up and down symmetrical. The high-temperature waste flue gas after combustion of the gas heat radiator passes through the tube type heat exchanger to heat the drying hot air of the next procedure, thereby realizing comprehensive utilization of energy and saving resources.

The combustion and auxiliary function system is arranged in the underground pipeline, so that the system is safe and reasonable in layout; the gas pipeline is provided with a quick connector, a total electric cut-off valve, a pressure regulating valve, a pressure gauge, a pressure switch and the like, and the air pipeline is provided with a combustion-supporting fan, a pressure gauge, a pressure switch and the like.

Flue branch pipes 128 and the combustion burners 123 are respectively located on both sides of the corrugated radiation plate 121 in the width direction on the heat radiator 12.

A baffle 130 is arranged in the radiator 12 at the middle position in the width direction of the wave-shaped radiation plate 121, one side of the baffle 130 is fixedly arranged on the inner wall of the radiator 12 at the side far away from the wave-shaped radiation plate 121, and the side of the baffle 130 close to the wave-shaped radiation plate 121 is a free end.

The plane of the baffle 130 is perpendicular to the inner wall of the heat radiator 12 on the side far away from the corrugated radiation plate 121, and the corrugated radiation plate 121 is symmetrically arranged with the plane of the baffle 130 as a symmetrical plane.

The baffle 130 is located on the plane of the two sides of the corrugated radiation plate 121 in the width direction, near the corrugated radiation plate 121. The arrangement of the baffle plate ensures that heat flow generated in the heat radiator passes through a space channel between the baffle plate and the waveform radiating plate to heat the waveform radiating plate more fully, thereby effectively improving the radiating effect and the heat energy utilization rate of the heat radiator.

The inner wall of the heat radiator 12 is provided with a ceramic lining, which can play a role in isolating heat and reduce the loss of heat energy.

Here, the soaking transport roller way 11 includes transport roller assemblies 111 uniformly distributed along a length direction thereof, the transport roller assemblies 111 include transport rollers 112 and roller supports 113, the roller supports 113 are fixedly installed on the ground, and centers of both ends of the transport rollers 112 are rotatably installed on the roller supports 113. During transportation, the hot rolled H-shaped steel 101 is positioned on the upper surface of the transportation roller 112, and the rotation of the transportation roller 112 drives the hot rolled H-shaped steel 101 to move forwards.

As shown in fig. 5 and 6, the water spray cooler 800 adopts the water spray atomization cooling system, which comprises a cooling bed fixing beam 810 and a water spray atomization cooler 820 arranged below the cooling bed fixing beam 810, wherein a cooling water recovery device 830 is arranged below the water spray atomization cooler 820, and a water outlet of the cooling water recovery device 830 is connected with a water inlet of an atomization nozzle assembly 860 on the water spray atomization cooling system. The water spray atomization cooling system adopts a combination of a water spray atomization cooler and a cooling water recovery device, so that the problems of uniform and efficient cooling and cooling water recovery and utilization after the hot rolled H-shaped steel is annealed are solved.

The cooling water recovery device 830 includes a cooling water collecting tank 831, a branch pipe 832 and a return pipe 833, the cooling water collecting tank 831 is located at a position right below the water spraying atomization cooler 820, and the bottom of the cooling water collecting tank 831 is communicated with the return pipe 833 through the branch pipe 832.

The whole water atomization cooling system is arranged below the cooling bed and is arranged along the length direction of the strip-shaped hot-rolled H-shaped steel, so that the stepping operation of the whole cooling bed is not hindered.

Wherein the water spray atomizing cooler 820 employs a clean water line of 0.4MPa, a compressed air system line of 0.7MPa, and a water atomizing nozzle.

As a preferred embodiment, the water spray atomizing cooler 820 comprises a fixed bracket 840, a swing bracket 850 and an atomizing nozzle assembly 860, wherein the swing bracket 840 is mounted on the fixed bracket 840 through a mechanical swing assembly 870, and a plurality of atomizing nozzle assemblies 860 are uniformly distributed on the upper surface of the swing bracket 840 along the length direction thereof.

The swing bracket is controlled to swing by adopting the mechanical swing type assembly 870, so that water mist sprayed out of the atomizing nozzle assembly is more uniform, and the uniform cooling effect of the hot rolled H-shaped steel is improved.

Here, by controlling the cooling effect with high efficiency by spray cooling, water is atomized by pressurized gas, and the air flow makes the water droplets contact the hot rolled H-section steel uniformly, so that stagnant water in the section steel can be removed, and uneven cooling of the hot rolled H-section steel can be improved.

The mechanical swing assembly 870 comprises a left hydraulic driving cylinder 871 and a right hydraulic driving cylinder 872, wherein one end of the left hydraulic driving cylinder 871 is hinged on the left side of the upper surface of the fixed bracket 840, and the other end is hinged on the left side of the lower surface of the swing bracket 850; the right hydraulic driving cylinder 872 has one end hinged to the right side of the upper surface of the fixing bracket 840 and the other end hinged to the right side of the lower surface of the swing bracket 850.

As a preferred embodiment, the fixing bracket 840, the swing bracket 850 and the four first hinge shafts 873 at hinge points between the left and right hydraulic driving cylinders 871 and 872 are parallel to each other, and the length direction of the first hinge shafts 873 is perpendicular to the length direction of the swing bracket 840.

As a preferred embodiment, the two hinge points between the fixed bracket 840 and the left and right hydraulic driving cylinders 871 and 872 are equal to the distance between the midpoint of the upper surface of the fixed bracket 840, and the two hinge points between the swing bracket 850 and the left and right hydraulic driving cylinders 871 and 872 are equal to the distance between the lower surface of the swing bracket 850.

Here, the swing bracket 850 is provided at both ends in the length direction with one of the mechanical swing assemblies 870, respectively, so that the swing bracket 850 can swing more smoothly.

As a preferred embodiment, the mechanical swing assembly 870 further includes a support 874, the lower end of the support 874 is fixedly installed at a middle position of the upper surface of the fixing bracket 840, the upper end is hinged at a middle position of the lower surface of the swing bracket 850, and a second hinge axis 875 at a hinge point of the support 874 and the swing bracket 850 is parallel to the first hinge axis 873.

As a preferred embodiment, the upper surface of the swing bracket 850 is a convex arched surface, and the lower surface is a plane; the atomizing nozzle assembly 860 is fixedly installed at the middle position of the arched surface, and the spraying direction of the atomizing nozzle assembly 860 is vertically upward when the lower surface of the swing bracket 850 is in a horizontal state.

As a preferred embodiment, the atomizing nozzle assembly 860 includes a water spraying pipe 861, an air pipe 862 and an atomizing nozzle 863, wherein the water spraying pipe 861 and the air pipe 862 are fixedly installed on the arched surface of the swing bracket 850, and the length direction of the water spraying pipe 861 and the air pipe 862 is the same as the length direction of the swing bracket 850, and a plurality of the atomizing nozzles 863 are fixedly installed on the water spraying pipe 861 and the air pipe 862 along the length direction of the swing bracket 850; the bottom of each of the atomizing nozzles 863 is connected to the water spray pipe 861 and the air pipe 862, and the top of the atomizing nozzle 863 is provided with a nozzle opening 864.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, and various modifications and variations may be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. The utility model provides a water spray atomizing cooler which characterized in that, includes fixed bracket, swing bracket and atomizing nozzle subassembly, the swing bracket passes through mechanical swing formula subassembly and installs on the fixed bracket, swing bracket upper surface is along its length direction upward evenly distributed has a plurality of atomizing nozzle subassembly.

2. A water spray atomizing cooler as set forth in claim 1 wherein said mechanical swing assembly includes a left hydraulic drive cylinder and a right hydraulic drive cylinder, said left hydraulic drive cylinder being hinged at one end to the left of the upper surface of said stationary bracket and at the other end to the left of the lower surface of said swing bracket; one end of the right hydraulic driving cylinder is hinged to the right side of the upper surface of the fixed bracket, and the other end of the right hydraulic driving cylinder is hinged to the right side of the lower surface of the swing bracket.

3. A water spray atomizing cooler as set forth in claim 2 wherein said stationary bracket, said swing bracket and said left and right hydraulic drive cylinders are each parallel to each other at four first hinge axes at hinge points therebetween, and wherein said first hinge axis length direction is perpendicular to said swing bracket length direction.

4. A water spray atomizing cooler as set forth in claim 3 wherein said two hinge points between said stationary bracket and said left and right hydraulic drive cylinders are equidistant from a midpoint of an upper surface of said stationary bracket, and said two hinge points between said swing bracket and said left and right hydraulic drive cylinders are equidistant from a midpoint of a lower surface of said swing bracket.

5. A water spray atomizing cooler as set forth in claim 3 wherein said mechanical swing assembly further includes a post having a lower end fixedly mounted intermediate said upper surface of said stationary bracket and an upper end hinged intermediate said lower surface of said swing bracket, and a second hinge axis at the hinge point of said post to said swing bracket being parallel to said first hinge axis.

6. The water spray atomizing cooler as set forth in claim 1, wherein said swing bracket has an upper surface which is a convex arcuate surface and a lower surface which is a flat surface; the atomizing nozzle component is fixedly arranged at the middle position of the arched surface, and when the lower surface of the swinging bracket is in a horizontal state, the spraying direction of the atomizing nozzle component is vertically upward.

7. The water spray atomizing cooler of claim 6, wherein said atomizing nozzle assembly includes a water spray conduit, an air conduit and an atomizing nozzle, said water spray conduit and said air conduit being fixedly mounted on arcuate surfaces of said swing bracket, and said water spray conduit and said air conduit being the same length as said swing bracket, a plurality of said atomizing nozzles being fixedly mounted on said water spray conduit and said air conduit along said swing bracket length; the bottom of each atomizing nozzle is communicated with the water spraying pipeline and the air pipeline, and the top of each atomizing nozzle is provided with a nozzle opening.

8. A water spray atomizing cooling system, characterized by comprising a cooling bed fixing beam and a water spray atomizing cooler as set forth in any one of claims 1-7 below the cooling bed fixing beam, wherein a cooling water recovery device is set below the water spray atomizing cooler, and a water outlet of the cooling water recovery device is connected with a water inlet of the atomizing nozzle assembly.

9. The water spray atomizing cooling system of claim 8, wherein said cooling water recovery means includes a cooling water collection tank, a branch pipe and a return pipe, said cooling water collection tank being located directly below said water spray atomizing cooler, said cooling water collection tank bottom being in communication with said return pipe through said branch pipe.

10. A complete equipment for eliminating internal stress of hot rolled H-steel, characterized in that the water spray atomization cooling system as set forth in claim 8 is adopted.