A roller integrated type billet spray cooling device

Abstract

The utility model provides a kind of integrated type billet spray cooling device of roller, comprising: heat inspection system;Water supply system, including main water supply pipeline, control valve being arranged on main water supply pipeline and multiple branch water pipes being connected with main water supply pipeline;Spray assembly, including the spray head connecting pipe being fixed in the end of branch water pipe by welding mode, the spray head being installed on spray head connecting pipe by screw thread connection mode and the water baffle being arranged around branch water pipe, spray head is arranged in the left and right sides of roller for carrying out spray cooling to billet on roller;Drainage structure, including backwater opening being arranged below roller, for promptly discharging spray wastewater.The heat inspection system includes: two pyrometers, respectively at the entrance and the exit of roller, signal connection with spray device control system.The integrated type billet spray cooling device of roller provided by the utility model can realize the rapid and uniform cooling of billet while maintaining the natural transportation of billet.

Description

Technical Field

[0001] This utility model relates to the field of steel wire rod production technology, and in particular to a roller conveyor integrated billet spray cooling device. Background Technology

[0002] In the production of rolled steel wire rod, steel billets produced by continuous casting in steel mills typically have high temperatures (approximately 600-800℃). Traditionally, these high-temperature billets require cooling in the following ways: The first is natural cooling, where the billets are cooled to a furnace-ready temperature (500-550℃) before entering the furnace. However, natural cooling is slow, disrupting production and wasting energy. The second method is in-furnace cooling, where some companies directly feed the high-temperature billets into the heating furnace, using increased gas consumption for forced convection heat exchange. However, this obviously wastes gas, and the cooling effect is not ideal. Furthermore, feeding the billets directly into the furnace without cooling can lead to product quality issues.

[0003] Therefore, this utility model attempts to provide a billet cooling device that can achieve rapid and uniform cooling. Utility Model Content

[0004] This invention aims to provide a roller conveyor integrated billet spray cooling device that can achieve rapid and uniform cooling of billets in continuous casting processes.

[0005] This utility model provides an integrated roller conveyor billet spray cooling device, comprising: a heat detection system; a water supply system, including a main water supply pipe, a control valve installed on the main water supply pipe, and multiple branch water pipes connected to the main water supply pipe; a spray assembly, including a nozzle connecting pipe fixed to the end of the branch water pipe by welding, a nozzle installed on the nozzle connecting pipe by threaded connection, and a baffle plate set around the branch water pipe, the nozzles being set on the left and right sides of the roller conveyor for spraying and cooling the billets on the roller conveyor; and a drainage structure, including a return water port set below the roller conveyor for timely discharge of spray wastewater.

[0006] Furthermore, the thermal detection system includes two pyrometers, which are placed at the inlet and outlet of the roller conveyor, respectively, and are connected to the control system of the spray device via signal connection.

[0007] Furthermore, the main water supply pipeline is equipped with a pressure sensor and a flow regulating valve, and the pressure sensor is connected to the heating furnace control system.

[0008] The roller conveyor integrated steel billet spray cooling device provided by this utility model can spray and cool the steel billet while maintaining the natural transportation of the steel billet, thereby achieving rapid and uniform cooling of the steel billet. Attached Figure Description

[0009] Figure 1 The diagram shown is a structural schematic of the roller conveyor integrated steel billet spray cooling device according to an embodiment of this utility model.

[0010] Figure 2 The diagram shown is a schematic of the spray assembly structure.

[0011] Figure label: 1: Main water supply pipe; 2: Control valve; 3: Branch pipe; 4: Sprinkler head connection pipe; 5: Sprinkler head; 6: Return water outlet; 7: Filter screen; 8: Pressure sensor; 9: Pyrometer. Detailed Implementation

[0012] To provide a better understanding of the purpose, structure, features, and functions of this utility model, detailed descriptions are provided below with reference to specific embodiments.

[0013] like Figure 1 As shown, this utility model embodiment provides a roller conveyor integrated steel billet spray cooling device, including: a heat detection system, which includes two high temperature gauges 9, respectively placed at the inlet and outlet of the roller conveyor (not shown in the roller conveyor diagram, surrounded by branch water pipes 3), and connected to the spray device control system; a water supply system, including a main water supply pipe 1, a control valve 2 installed on the main water supply pipe 1, and multiple branch water pipes 3 connected to the main water supply pipe 1, wherein the main water supply pipe 1 is equipped with a pressure sensor 8 and a flow regulating valve, and the pressure sensor 8 is connected to the heating furnace control system; a spray assembly, including a nozzle connecting pipe 4 fixed to the end of the branch water pipe 3 by welding, a nozzle 5 installed on the nozzle connecting pipe 4 by threaded connection, and a baffle plate set around the branch water pipe 3, the nozzles 5 are set on the left and right sides of the roller conveyor (not shown in the roller conveyor diagram, surrounded by branch water pipes 3) for spraying and cooling the steel billets on the roller conveyor; and a drainage structure, including a return water port 6 set below the roller conveyor for timely discharge of spray wastewater.

[0014] like Figure 1 As shown, the roller conveyor integrated billet spray cooling device includes a main water supply pipe 1, a control valve 2, a branch water pipe 3, a nozzle connecting pipe 4, a nozzle 5, a return water port 6, a filter screen 7, a pressure sensor 8, and a pyrometer 9.

[0015] The main water supply pipe 1 is horizontally arranged above the roller conveyor, and its inlet end is connected to the medium-pressure turbidity circulating water system in the plant area. Pressure sensor 8 and control valve 2 are installed sequentially on the main water supply pipe 1. The main water supply pipe 1 is connected to four branch water pipes 3, and the spacing between the branch water pipes 3 is 1500mm±50mm. The nozzle connecting pipe 4 is welded to the end of the branch water pipe 3. The welding method is argon arc welding, and the weld height is not less than 5mm. The nozzle 5 is connected to the nozzle connecting pipe 4 by M45×2 thread, and the thread fit accuracy is 6H / 6g.

[0016] The nozzle connecting pipe 4 has an inner diameter of 50mm, a wall thickness of 5mm, and is made of 06Cr19Ni10 material; the nozzle 5 is a fan-shaped nozzle with a spray angle of 60°±5° and a flow coefficient Kv=4.2.

[0017] The return water inlet 6 has a V-shaped groove structure with a groove inclination angle of 7°±1°; the filter screen 7 is a detachable design, made of 304 stainless steel, with a mesh size of 2mm×2mm; the end of the return water inlet 6 is connected to the plant's water treatment system through a DN200 pipe.

[0018] Preferably, the four branch water pipes 3 and the nozzle connecting pipes 5 welded to the branch water pipes 3 are made of stainless steel, which is rust-proof and high temperature resistant, and the nozzles 5 are made of copper alloy, which has excellent thermal conductivity and oxidation resistance.

[0019] Furthermore, the position of the branch water pipes in the spray assembly is adjustable, allowing for adjustments to the spray position based on the billet's location to ensure uniform cooling. For example, the branch water pipes can be connected to movable modules for fine-tuning, or they can be connected to ball screws, etc.

[0020] Preferably, stainless steel baffles are installed around the branch water pipes to block the spray wastewater and prevent it from damaging the electrical equipment.

[0021] Work process: Step 1: The steel billet enters the testing area, and the surface temperature is measured by a pyrometer; Step 2: When the temperature exceeds the set temperature threshold, the PLC controller starts the spraying program; Step 3: Control valve 2 to adjust the water pressure (0.6-1.0MPa) according to the preset curve; Step 4: After the high temperature gauge at the outlet of the spray device detects that the steel billet has left the spray device, stop the spraying and cooling process; Step 5: Wastewater is discharged through return water outlet 6, completing the cooling process.

[0022] This embodiment uses a spray nozzle to spray a fan-shaped water stream to cool the high-temperature steel billet. The fan-shaped water stream can be flexibly adjusted using a pressure sensor and flow control valve on the main water supply pipeline to adapt to different production processes. This invention significantly improves cooling efficiency. Through a multi-nozzle array arrangement, it achieves uniform cooling of the steel billet surface and allows for flexible adjustment of the flow rate to control the temperature gradient, meeting the requirements of continuous production and significantly reducing gas consumption.

[0023] This utility model belongs to the field of steel wire rod production and processing technology, specifically relating to an integrated roller conveyor billet spray cooling device, suitable for rapid cooling of high-temperature steel billets. This spray cooling device is installed in the furnace feed roller conveyor area of ​​the heating furnace and mainly consists of a heat detection system, a water supply system, spray components, and a drainage structure. It features high-efficiency cooling and easy maintenance. The specific structure is as follows: The heat detection system consists of two high-temperature gauges responsible for measuring the billet temperature; the main water supply pipe is connected to four branch water pipes through diversion valves to achieve multi-channel controllable water supply; the spray head connecting pipe is fixed to the branch water pipes by welding and has a standard threaded interface inside for easy disassembly and maintenance; the spray head is threaded to the connecting pipe; baffles are installed around the branch water pipes to effectively prevent spray wastewater from damaging electrical equipment; a return water inlet is set below the roller conveyor to promptly discharge spray wastewater and prevent water accumulation from affecting equipment operation.

[0024] The roller conveyor integrated steel billet spray cooling device provided by this utility model can spray and cool the steel billet while maintaining the natural transportation of the steel billet, thereby achieving rapid and uniform cooling of the steel billet.

[0025] In the description of this utility model, it should be understood that the terms "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" and their orientation or positional relationships are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0026] This utility model has been described by the above-described embodiments; however, these embodiments are merely examples for implementing this utility model. It must be noted that the disclosed embodiments do not limit the scope of this utility model. Conversely, any modifications and refinements made without departing from the spirit and scope of this utility model are within the scope of patent protection of this utility model.

Claims

1. A roller conveyor integrated steel billet spray cooling device, characterized in that, include: Thermal detection system; The water supply system includes a main water supply pipe, control valves installed on the main water supply pipe, and multiple branch water pipes connected to the main water supply pipe. The spray assembly includes a nozzle connecting pipe fixed to the end of the branch pipe by welding, a nozzle installed on the nozzle connecting pipe by threaded connection, and a baffle plate set around the branch pipe. The nozzles are set on the left and right sides of the roller table to spray and cool the steel billet on the roller table. The drainage structure includes a return water inlet located below the roller conveyor for timely discharge of spray wastewater.

2. The roller conveyor integrated billet spray cooling device according to claim 1, characterized in that, The thermal detection system includes two pyrometers, which are placed at the entrance and exit of the roller conveyor, respectively, and are connected to the control system of the spray device.

3. The roller conveyor integrated billet spray cooling device according to claim 1, characterized in that, The main water supply pipeline is equipped with a pressure sensor and a flow regulating valve. The pressure sensor is connected to the heating furnace control system.

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