Quenching water blowing system for continuous casting

Abstract

The utility model discloses a quenching water blowing system for continuous casting and relates to the field of metallurgy. The quenching and water blowing system for continuous casting comprises a support fixing device used for being connected with a continuous casting machine, a dummy bar supporting device, a surface quenching device and a water blowing device, wherein the dummy bar supporting device, the surface quenching device and the water blowing device are connected to the support fixing device. The dummy bar supporting device is used for supporting a dummy bar of a lap joint. The surface quenching device is used for respectively spraying water to quench the top surface and the bottom surface of the continuous casting billet penetrating through the support fixing device; the water blowing device is used for spraying air to the top face of the continuous casting billet penetrating through the support fixing device so that water can be blown and separated from the middle of the top face of the continuous casting billet to the two sides. According to the quenching water blowing system for continuous casting, separation of nitrides on the surface of a continuous casting blank can be restrained under the condition that the cooling strength is guaranteed, the defect of direct hot feeding rolling is overcome, and the situation that due to arrangement of a quenching device, the distance between equipment is increased, and consequently a dummy bar head or a dummy bar tail falls in the dummy bar feeding process is avoided.

Description

Technical Field

[0001] The present application relates to the field of metallurgy, and in particular to a quenching and water blowing system for continuous casting. Background Art

[0002] In the continuous casting slab stage of the steel production process, the produced continuous cast slabs are typically sent directly to rolling hot to reduce heating time and energy consumption, thereby effectively reducing costs and increasing profits. However, directly sending the continuous cast slabs directly to rolling without quenching will cause nitride precipitation on the slab surface, resulting in defects such as cracks in the rolled product. Therefore, quenching equipment is required for quenching.

[0003] However, the use of quenching equipment for continuous casting billets will not only increase the distance between the equipment, but also leave a large amount of water remaining on the inner arc surface of the continuous casting billet, and generate a large amount of water vapor that moves with the continuous casting billet, thereby causing a large amount of water vapor to fill the production plant and continuously cool the billet, causing defects in the billet product and reducing product quality. Utility Model Content

[0004] The purpose of this application is to provide a quenching water blowing system for continuous casting, which can inhibit the precipitation of nitrides on the surface of the continuous casting billet while ensuring the cooling intensity, improve the defects of direct hot rolling, and prevent the ingot head or ingot rod tail from falling off during the ingot feeding process due to the increase in equipment spacing caused by the arrangement of quenching devices.

[0005] This application is implemented as follows:

[0006] The present application provides a quenching water blowing system for continuous casting, which includes:

[0007] A support fixing device for connecting with the continuous casting machine;

[0008] A dummy bar supporting device, connected to the support fixing device, for supporting the dummy bar of the overlap;

[0009] a surface quenching device connected to the support fixing device, used for spraying water quenching the top and bottom surfaces of the continuous casting billet passing through the support fixing device;

[0010] The water blowing device is connected to the support fixing device and is used for blowing air to the top surface of the continuous casting billet passing through the support fixing device so as to blow water away from the middle of the top surface of the continuous casting billet to both sides.

[0011] In some optional embodiments, the support fixing device includes two relatively arranged bottom supports, two side main supports, two end supports and two ingot guide rod support supports, the bottom of one end and the other end of each side main support are respectively connected to a corresponding bottom support and a corresponding end support, and the two ingot guide rod support supports are respectively connected to the top of the two side main supports.

[0012] In some optional embodiments, the ingot rod support device includes two support plates and multiple guide plates, the two ends of the two support plates are respectively connected to the two ingot rod support supports, the multiple guide plates are arranged at intervals along the length direction of the support plates, and the two ends of each guide plate are respectively connected to the two support plates.

[0013] In some optional embodiments, chamfers are provided at the tops of both ends of each guide plate, and / or at least one reinforcing rib is connected between the two ends of each support plate and the corresponding dummy bar support bracket.

[0014] In some optional embodiments, at least one lifting hole is provided at each end of each support plate, and / or each dummy bar support bracket is provided with a first lifting lug.

[0015] In some optional embodiments, the surface quenching device includes two quenching supports and at least one quenching unit, and the two quenching supports are respectively connected to the two side main supports; the quenching unit includes a top quenching device and a bottom quenching device connected to the two quenching supports, the top quenching device includes two top fixed brackets connected one-to-one with the quenching supports, two top movable brackets, at least two top quenching tubes whose two ends are respectively connected to the two top movable brackets and at least two rows of top quenching nozzles connected to the bottom of the top quenching tube, and the two top movable brackets are respectively connected to the two top fixed brackets in a liftable manner; the bottom quenching device includes a bottom quenching tube and at least two rows of bottom quenching nozzles connected to the top of the bottom quenching tube, and the bottom quenching tube is liftably connected to the two quenching supports.

[0016] In some optional embodiments, the two top fixed brackets are respectively provided with a strip hole extending in the height direction and a plurality of fixing holes spaced apart below the strip holes. The two top movable brackets are respectively connected with an adjusting bolt sliding through the two strip holes and a pluggable fixing pin. When the two top movable brackets are raised or lowered, the adjusting bolts are driven to move along the corresponding strip holes, and the fixing pins are aligned with each corresponding fixing pin in turn.

[0017] In some optional embodiments, both ends of the bottom quenching tube are connected to connecting plates via support rods, the two quenching supports are respectively connected to liftable connecting screws via threads, and the two connecting plates are respectively detachably connected to the two connecting screws.

[0018] In some optional embodiments, two adjacent rows of top quenching nozzles are staggered and at least one row of top quenching nozzles is deflected at an acute angle away from the other row of adjacent top quenching nozzles, and / or, two adjacent rows of bottom quenching nozzles are staggered and at least one row of bottom quenching nozzles is deflected at an acute angle away from the other row of bottom quenching nozzles.

[0019] In some optional embodiments, the water blowing device includes two water blowing brackets, an air supply pipe and an air jet pipe arranged at intervals in the upper and lower directions, a central gas nozzle connected to the center of the bottom of the air jet pipe, and two groups of side gas nozzles symmetrically connected to the two ends of the bottom of the air jet pipe. The air supply pipe and the air jet pipe pass through and are connected to the two water blowing brackets respectively. The air supply pipe and the air jet pipe are connected by multiple gas pipes. The central gas nozzle is arranged vertically and deflected at an acute angle toward the direction close to the surface quenching device. The two groups of side gas nozzles are deflected at an acute angle toward the surface quenching device and at the same time deflected at an acute angle away from the central gas nozzle.

[0020] The present application has the following beneficial effects: the continuous casting quenching and water blowing system provided herein comprises a support fixture for connection to a continuous casting machine, a dummy bar support device connected to the support fixture, a surface quenching device, and a water blowing device. The dummy bar support device is used to support the overlapping dummy bars; the surface quenching device is used to spray water on the top and bottom surfaces of the continuous casting billet passing through the support fixture for quenching; and the water blowing device is used to spray water on the top surface of the continuous casting billet passing through the support fixture to sweep water away from the middle of the top surface of the continuous casting billet to both sides. The continuous casting quenching and water blowing system provided herein can suppress the precipitation of nitrides on the surface of the continuous casting billet while ensuring cooling intensity, improve the defects of direct hot rolling, and prevent the dummy bar head or tail from overlapping during the dummy bar feeding process due to the increased equipment spacing caused by the arrangement of the quenching device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 A schematic structural diagram of a quenching and water blowing system for continuous casting provided in an embodiment of the present application from a first perspective;

[0023] Figure 2 A schematic structural diagram of a quenching and water blowing system for continuous casting provided in an embodiment of the present application from a second perspective;

[0024] Figure 3 A schematic structural diagram of a quenching and water blowing system for continuous casting provided in an embodiment of the present application from a third perspective;

[0025] Figure 4 A schematic diagram of a partial structure of a bottom quenching device in a quenching and water blowing system for continuous casting provided in an embodiment of the present application from a first perspective;

[0026] Figure 5A schematic diagram of the partial structure of the bottom quenching device in the continuous casting quenching and water blowing system provided in an embodiment of the present application from a second perspective;

[0027] Figure 6 A schematic diagram of a partial structure of a top quenching device in a continuous casting quenching and water blowing system provided in an embodiment of the present application from a first perspective;

[0028] Figure 7 A schematic diagram of the partial structure of the top quenching device in the continuous casting quenching and water blowing system provided in an embodiment of the present application from a second perspective;

[0029] Figure 8 This is a schematic diagram of the partial structure of the water blowing device 400 in the continuous casting quenching water blowing system provided in an embodiment of the present application.

[0030] In the figure: 100, support fixing device; 110, bottom support; 120, side main support; 130, end support; 140, dummy bar support support; 200, dummy bar support device; 210, support plate; 220, guide plate; 230, chamfer; 240, reinforcing rib; 250, lifting hole; 260, first lifting lug; 300, surface quenching device; 310, quenching support; 320, top fixing bracket; 321, strip hole; 322, fixing hole; 323, second lifting lug; 330, top Movable bracket; 331, adjusting bolt; 332, fixing pin; 340, top quenching tube; 350, top quenching nozzle; 360, bottom quenching tube; 370, bottom quenching nozzle; 380, support rod; 381, connecting plate; 382, ​​third lifting ear; 390, connecting screw; 400, water blowing device; 410, water blowing bracket; 420, air supply pipe; 430, air injection pipe; 440, middle gas nozzle; 450, side gas nozzle; 460, air supply pipe; 470, connecting column; 500, continuous casting billet. DETAILED DESCRIPTION

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without creative work are within the scope of protection of the present application.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0034] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of this application is typically placed when in use. These terms are intended only to facilitate the description of this application and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0035] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0036] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0037] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above and obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below and obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0038] The features and performance of the quenching and water blowing system for continuous casting of the present application will be further described in detail below with reference to the embodiments.

[0039] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8 As shown, an embodiment of the present application provides a quenching and water blowing system for continuous casting, which includes a support fixing device 100 for connecting to a continuous casting machine, and a guide rod support device 200, a surface quenching device 300 and a water blowing device 400 respectively connected to the support fixing device 100, the guide rod support device 200 is used to support the guide rod of the overlap, the guide rod is used to pull the continuous casting billet 500 to move, the surface quenching device 300 is used to spray water on the top and bottom surfaces of the continuous casting billet 500 passing through the support fixing device 100 for quenching; the water blowing device 400 is used to spray air on the top surface of the continuous casting billet 500 passing through the support fixing device 100 to blow water away from the middle of the top surface of the continuous casting billet 500 to both sides.

[0040] Among them, the support fixing device 100 includes two relatively arranged bottom supports 110, two side main supports 120, two end supports 130 and two ingot rod support supports 140. The bottom of one end and the other end of each side main support 120 are respectively connected to a corresponding bottom support 110 and a corresponding end support 130, and the two ingot rod support supports 140 are respectively connected to the top of the two side main supports 120.

[0041] The ingot rod support device 200 includes two support plates 210 and six guide plates 220. The two support plates 210 are arranged in parallel and their two ends are respectively connected to the top of the two ingot rod support supports 140. The six guide plates 220 are arranged at intervals along the length direction of the support plates 210. The guide plates 220 are arranged vertically and their two ends are respectively connected to the two support plates 210. The top of each guide plate 220 is provided with a chamfer 230 at both ends. A reinforcing rib 240 is connected between the two ends of each support plate 210 and the corresponding ingot rod support support 140. A lifting hole 250 is provided at both ends of each support plate 210, and each ingot rod support support 140 is provided with a first lifting ear 260.

[0042] The surface quenching device 300 includes two quenching supports 310 and three quenching units. The bottoms of the two quenching supports 310 are respectively connected to the tops of the two side main supports 120. The three quenching units and the dummy rod support device 200 are arranged in sequence along the length direction of the side main support 120. Each quenching unit includes a top quenching device and a bottom quenching device connected to the two quenching supports 310. Each top quenching device includes two top fixed brackets 320 connected to the quenching supports 310 in a one-to-one correspondence, two top movable brackets 330, four top quenching tubes 340 whose two ends are respectively connected to the two top movable brackets 330, and four rows of top quenching nozzles 350. The bottom of each top quenching tube 340 is connected to a row of seventeen spaced top quenching nozzles 350. Two adjacent rows of top quenching nozzles 350 are arranged along the top quenching tube 340. The top quenching nozzles 350 are staggered in the length direction, and the two rows of top quenching nozzles 350 on the outside of each quenching unit are respectively arranged at an angle of 5 degrees away from the two adjacent rows of top quenching nozzles 350 on the inside; the two top movable brackets 330 are respectively connected to the two top fixed brackets 320 in a liftable manner, and the two top fixed brackets 320 are respectively provided with a strip hole 321 extending along the height direction and four fixing holes 322 spaced below the strip hole 321. The two top movable brackets 330 are respectively connected with an adjusting bolt 331 sliding through the two strip holes 321 and a pluggable fixing pin 332. When the two top movable brackets 330 are raised or lowered, the adjusting bolt 331 is driven to move along the corresponding strip hole 321, and the fixing pin 332 is aligned with each corresponding fixing pin 332 in turn; the top of the two top movable brackets 330 is respectively provided with a second lifting ear 323.

[0043] The bottom quenching device includes a bottom quenching tube 360 ​​and four rows of bottom quenching nozzles 370 connected to the top of the bottom quenching tube 360. Each row includes seventeen bottom quenching nozzles 370 arranged at intervals along the length of the bottom quenching tube 360. Two adjacent rows of bottom quenching nozzles 370 are staggered along the length of the bottom quenching tube 360. The two outer rows of bottom quenching nozzles 370 in each quenching unit are respectively arranged at an angle of 5 degrees away from the adjacent rows of bottom quenching nozzles 370 located on the inner side. The bottom quenching tube 360 ​​is levitationally connected to two quenching supports 310. The two ends of the bottom quenching tube 360 ​​are respectively connected to connecting plates 381 through support rods 380. The two quenching supports 310 are respectively connected to levitation-capable connecting screws 390 by threads. The two connecting plates 381 are respectively sleeved on the tops of the two connecting screws 390 and connected by nuts. The two connecting plates 381 are respectively connected to third lifting ears 382.

[0044] The water blowing device 400 includes two water blowing brackets 410, an air supply pipe 420 and an air jet pipe 430 arranged at intervals above and below, a central gas nozzle 440 connected to the center of the bottom of the air jet pipe 430, and two sets of side gas nozzles 450 symmetrically connected to the two ends of the bottom of the air jet pipe 430. The two water blowing brackets 410 are respectively connected to the two top movable brackets 330 of the adjacent quenching units through two connecting columns 470. The ends of the air supply pipe 420 and the air jet pipe 430 respectively pass through and are connected to the two water blowing brackets 410. The air supply pipe 420 and the air jet pipe 430 are connected by three vertically arranged air supply pipes 460. The central gas nozzle 440 is arranged vertically and deflected at an angle of 30 degrees toward the surface quenching device 300. The two sets of side gas nozzles 450 are arranged at an angle of 30 degrees toward the surface quenching device 300 and at an angle of 30 degrees away from the central gas nozzle 440.

[0045] When the continuous casting quenching and water blowing system provided in the embodiment of the present application is used, the support fixing device 100 is first installed on the continuous casting machine production line, and the two side total supports 120 in the support fixing device 100 are respectively connected to the two adjacent devices of the continuous casting machine production line through the bottom support 110 and the end support 130 connected at both ends, and then the ingot guide rod support device 200, the surface quenching device 300 and the water blowing device 400 are respectively installed on the support fixing device 100 to start operation. During normal production, the ingot guide rod is used to pull the continuous casting billet 500 through the top of the support fixing device 100, and the surface quenching device 300 is used to spray the surface quenching of the continuous casting billet 500 within a certain time and a certain quenching length according to the process requirements, that is, water is respectively passed into each top quenching tube 340 and the bottom quenching tube 360, and then respectively passed through. The top quenching nozzle 350 and the bottom quenching nozzle 370 are sprayed onto the top and bottom surfaces of the continuous casting billet 500 for quenching, so that the surface temperature of the continuous casting billet 500 is reduced from a high temperature value to a temperature value within the process requirements, thereby improving the defects of direct hot delivery and rolling of the continuous casting billet 500, and after quenching, the water blowing device 400 is used to spray the top surface of the continuous casting billet 500 to blow the water from the middle of the top surface of the continuous casting billet 500 to both sides, that is, compressed air is passed into the air supply pipe 420 and then enters the air injection pipe 430 through the air delivery pipe 460 and then sprayed out through the middle gas nozzle 440 and each side gas nozzle 450, so that the middle gas nozzle 440 and each side gas nozzle 450 are used to blow the water from the middle of the top surface of the continuous casting billet 500 to both sides, so that there is no water residue on the top surface of the continuous casting billet 500, avoiding the influence of continuous quenching due to residual moisture on the rolling quality.

[0046] Among them, by setting up the dummy bar support device 200, the two support plates 210 of the dummy bar support device 200 and the two support plates 210 are arranged in parallel and the two ends are respectively connected to the top of the two dummy bar support supports 140 to support and guide the dummy bar of the overlap, so as to avoid the dummy head or the dummy tail falling during the dummy ingot feeding process caused by the large spacing caused by the installation of the quenching water blowing system for continuous casting; the top of each end of each guide plate 220 is respectively provided with a chamfer 230, which can be used to improve the smoothness of the dummy bar guidance of the overlap A reinforcing rib 240 is connected between the two ends of each support plate 210 and the corresponding ingot rod support bracket 140, which can improve the structural strength of the support plate 210 and ensure that the support plate 210 and the guide plate 220 stably support and guide the ingot rod; each end of each support plate 210 is respectively provided with a lifting hole 250 passing through both sides thereof, and each ingot rod support bracket 140 is provided with a first lifting ear 260, which can facilitate the operator to use the lifting hole 250 and the first lifting ear 260 to lift the ingot rod support device 200.

[0047] In addition, the two top movable brackets 330 are respectively connected to the two top fixed brackets 320 in a liftable manner, which can facilitate the operator to adjust the height of the two top movable brackets 330 to adjust the height of each top quenching nozzle 350 connected to the top quenching tube 340. When it is necessary to adjust the height of the top movable bracket 330, the operator pulls out the two fixing pins 332 from the corresponding two fixing holes 322 and rotates and loosens the nuts of the two adjusting bolts 331 to release the connection between the two top movable brackets 330 and the two corresponding top fixed brackets 320. At this time, the top movable bracket 330 can be used. The second lifting ear 323 connecting the two top movable brackets 330 lifts or lowers the two top movable brackets 330 to a preset height, so that the two adjusting bolts 331 rise and fall along the two corresponding bar holes 321, and align the two fixing pins 332 with the two corresponding fixing holes 322 at a preset height, re-insert the two fixing pins 332 through the two corresponding bar holes 321 and rotate and tighten the nuts of the two adjusting bolts 331 to lock the fixed connection between the two top movable brackets 330 and the two corresponding top fixed brackets 320, thereby completing the height adjustment of the two top movable brackets 330.

[0048] The bottom quenching tube 360 ​​is connected to the two quenching supports 310 in a liftable manner, which can facilitate the operator to adjust the height of the bottom quenching tube 360 ​​to adjust the height of each bottom quenching nozzle 370 connected to the bottom quenching tube 360. When the height of the bottom quenching tube 360 ​​needs to be adjusted, the bolts connecting the two connecting plates 381 to the top of the two connecting screws 390 are loosened, and the bottom quenching tube 360 ​​is lifted using the third lifting lugs 382 connected to the two connecting plates 381 respectively. Then, the two connecting screws 390 are rotated to adjust the height of the two connecting screws 390 to the preset height, and then the bottom quenching tube 360 ​​is lowered again, so that the connecting plates 381 at both ends of the bottom quenching tube 360 ​​are respectively connected by the support rods 380 and are placed on the top of the two connecting screws 390 and fixed with nuts to complete the height adjustment of the bottom quenching tube 360.

[0049] The middle gas nozzle 440 is arranged vertically and deflected at an angle of 30 degrees toward the surface quenching device 300. The two groups of side gas nozzles 450 are arranged at an angle of 30 degrees toward the surface quenching device 300 and at the same time deflected at an angle of 30 degrees away from the middle gas nozzle 440. This can ensure that the compressed air ejected from the middle gas nozzle 440 and the side gas nozzle 450 can stably blow water away from the middle of the top surface of the continuous casting billet 500 to both sides.

[0050] The acute angle described in this application is an angle between 0-90 degrees, or an angle between 5-45 degrees.

[0051] The embodiments described above are part of the embodiments of the present application, rather than all of the embodiments. The detailed description of the embodiments of the present application is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

Claims

1. A quenching water blowing system for continuous casting, characterized in that: It includes: A support fixing device for connecting with the continuous casting machine; a dummy bar supporting device connected to the support fixing device and used for supporting the dummy bar of the overlap; a surface quenching device connected to the support fixing device, for spraying water quenching the top and bottom surfaces of the continuous casting billet passing through the support fixing device; The water blowing device is connected to the support fixing device and is used to blow air to the top surface of the continuous casting billet passing through the support fixing device to blow water away from the middle of the top surface of the continuous casting billet to both sides.

2. The continuous casting quenching water blowing system according to claim 1, characterized in that: The support fixing device includes two relatively arranged bottom supports, two side main supports, two end supports and two dummy rod support supports. The bottom of one end and the other end of each side main support are respectively connected to a corresponding bottom support and a corresponding end support, and the two dummy rod support supports are respectively connected to the tops of the two side main supports.

3. The continuous casting quenching water blowing system according to claim 2, characterized in that: The dummy rod support device includes two support plates and multiple guide plates. The two ends of the two support plates are respectively connected to the two dummy rod support supports. The multiple guide plates are arranged at intervals along the length direction of the support plates. The two ends of each guide plate are respectively connected to the two support plates.

4. The continuous casting quenching water blowing system according to claim 3, characterized in that: The tops of both ends of each guide plate are respectively provided with chamfers, and / or at least one reinforcing rib is respectively connected between the two ends of each support plate and the corresponding dummy bar support bracket.

5. The continuous casting quenching water blowing system according to claim 3, characterized in that: At least one lifting hole is respectively provided at both ends of each support plate, and / or each dummy bar support bracket is provided with a first lifting lug.

6. The continuous casting quenching water blowing system according to claim 2, characterized in that: The surface quenching device includes two quenching supports and at least one quenching unit, and the two quenching supports are respectively connected to the two side main supports; the quenching unit includes a top quenching device and a bottom quenching device connected to the two quenching supports, the top quenching device includes two top fixed brackets connected one-to-one with the quenching supports, two top movable brackets, at least two top quenching tubes whose two ends are respectively connected to the two top movable brackets and at least two rows of top quenching nozzles connected to the bottom of the top quenching tube, and the two top movable brackets are respectively connected to the two top fixed brackets in a liftable manner; the bottom quenching device includes a bottom quenching tube and at least two rows of bottom quenching nozzles connected to the top of the bottom quenching tube, and the bottom quenching tube is liftably connected to the two quenching supports.

7. The continuous casting quenching water blowing system according to claim 6, characterized in that: The two top fixed brackets are respectively provided with a strip hole extending in the height direction and a plurality of fixing holes spaced apart below the strip holes. The two top movable brackets are respectively connected with an adjusting bolt sliding through the two strip holes and a pluggable fixing pin. When the two top movable brackets are raised or lowered, the adjusting bolts are driven to move along the corresponding strip holes, and the fixing pins are aligned with each corresponding fixing pin in turn.

8. The continuous casting quenching water blowing system according to claim 6, characterized in that: The two ends of the bottom quenching tube are respectively connected with connecting plates through supporting rods, the two quenching supports are respectively connected with liftable connecting screws through threads, and the two connecting plates are respectively detachably connected to the two connecting screws.

9. The continuous casting quenching water blowing system according to claim 6, characterized in that: The two adjacent rows of the top quenching nozzles are staggered and at least one row of the top quenching nozzles is deflected at an acute angle away from the other row of the top quenching nozzles, and / or, the two adjacent rows of the bottom quenching nozzles are staggered and at least one row of the bottom quenching nozzles is deflected at an acute angle away from the other row of the bottom quenching nozzles.

10. The continuous casting quenching water blowing system according to claim 1, characterized in that: The water blowing device includes two water blowing brackets, an air supply pipe and an air jet pipe spaced apart in an upper and lower arrangement, a central gas nozzle connected to the center of the bottom of the air jet pipe, and two groups of side gas nozzles symmetrically connected to the two ends of the bottom of the air jet pipe. The air supply pipe and the air jet pipe pass through and are connected to the two water blowing brackets respectively. The air supply pipe and the air jet pipe are connected by multiple gas pipes. The central gas nozzle is arranged vertically and deflected at an acute angle toward the direction approaching the surface quenching device. The two groups of side gas nozzles deflect at an acute angle toward the direction approaching the surface quenching device and at the same time deflect at an acute angle away from the central gas nozzle.

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