A device for testing the impact uniformity of an ultrafast cooling nozzle

Abstract

This utility model discloses an ultra-fast cooling nozzle impact uniformity testing device, belonging to the field of steel rolling cooling technology. It includes a conveyor plate with two lower support beams arranged side-by-side along its length below the conveyor plate. A conveyor roller is positioned below the two lower support beams. An upper test plate is mounted on the conveyor plate. The two lower support beams have slots at opposite positions for mounting the lower test plate, which is located directly below the upper test plate. Both the upper and lower test plates are coated with paint. The conveyor roller moves the upper test plate to below the upper manifold and nozzle, and then moves the lower test plate to above the lower manifold and nozzle. A water curtain is formed between the upper manifold and nozzle and the upper test plate, and between the lower manifold and nozzle and the lower test plate. This utility model eliminates the need for manual entry into the frame for inspection, resulting in high testing efficiency and a high degree of standardization, effectively determining the uniformity of water output from the nozzle.

Description

Technical Field

[0001] This utility model relates to a device for testing the uniformity of impact of an ultra-fast cooling nozzle, belonging to the field of steel rolling cooling technology. Background Technology

[0002] Ultra-fast cooling equipment for steel plates is a key piece of equipment used in the steel manufacturing process to achieve rapid cooling of steel plates. It mainly consists of a high-density nozzle array; water is sprayed from the nozzles to form a water curtain, ensuring uniform cooling of the steel plate surface. This equipment is primarily used in hot rolling and heat treatment processes. By precisely controlling the cooling rate and temperature, it optimizes the microstructure and mechanical properties of the steel plate. This equipment can improve product performance (strength can be increased by 20%-50%), reduce the amount of alloying elements added, and lower costs. However, it requires high uniformity in cooling and necessitates regular inspection. Existing inspection methods mainly rely on personnel entering the frame to inspect multiple nozzles, which is inefficient, lacks standardization, fails to detect internal scaling, and has insufficient uniformity control. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide an ultra-fast cold nozzle impact uniformity testing device that does not require manual entry into the frame for inspection, has high testing efficiency, and a high degree of standardization in inspection, and can effectively determine the uniformity of water output from the nozzle.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] An ultrafast cold nozzle impact uniformity testing device includes a conveyor plate, two lower support beams arranged side by side along the length of the conveyor plate, a conveyor roller conveyor below the two lower support beams, an upper test plate on the conveyor plate, and slots opened at opposite positions on the two lower support beams for mounting the lower test plate. The lower test plate is located directly below the upper test plate. The upper test plate and the lower test plate are coated with paint. The conveyor roller conveyor moves the upper test plate to below the upper manifold and nozzle, and moves the lower test plate to above the lower manifold and nozzle. A water curtain is formed between the upper manifold and nozzle and the upper test plate, and between the lower manifold and nozzle and the lower test plate.

[0006] The conveyor plate is a rectangular steel plate with a thickness of 28~32mm.

[0007] The thickness of the paint layer on the upper and lower test plates is greater than 100 μm.

[0008] The lower support beam is made of 10# channel steel.

[0009] The upper and lower test plates are made of steel plates with a thickness of 7-9 mm.

[0010] The distance between the upper manifold and nozzle and the upper test plate is 350~500mm.

[0011] The distance between the lower manifold and nozzle and the lower test plate is 350~500mm.

[0012] The number of upper and lower test boards is N, where N is an integer greater than or equal to 1.

[0013] The beneficial effects of this utility model are as follows: The ultra-fast cooling nozzle impact uniformity testing device provided by this utility model does not require manual entry into the frame for inspection, has high testing efficiency, and technicians can effectively judge the uniformity of water output from the nozzle based on the water column impact marks. Moreover, the inspection is highly standardized, guiding maintenance personnel to unclog or replace the nozzles in a targeted manner, improving the cooling uniformity of the ultra-fast cooling equipment, reducing the residual stress of the steel plate after cooling, and ensuring the stability of performance. Attached Figure Description

[0014] Figure 1 This is a front view structural diagram of an ultrafast cold nozzle impact uniformity testing device according to the present invention;

[0015] Figure 2 This is a top view schematic diagram of the ultrafast cold nozzle impact uniformity testing device of this utility model;

[0016] The attached diagram is labeled as follows: 1-Nozzle; 2-Upper test plate; 3-Lower support beam; 4-Lower test plate; 5-Lower manifold and nozzle; 6-Conveyor plate; 7-Transmission roller; 8-Water curtain. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solution of the present invention more clearly, and should not be used to limit the protection scope of the present invention.

[0018] Example 1

[0019] like Figure 1 and Figure 2 As shown, this utility model discloses an ultrafast cold nozzle impact uniformity testing device, including a conveyor plate 6, two lower support beams 3 arranged side by side along the length direction below the conveyor plate 6, and a transmission roller conveyor 7 arranged below the two lower support beams 3, which drives the conveyor plate 6 and the lower support beams 3 to move.

[0020] An upper test plate 2 is mounted on the conveyor plate 6. Two lower support beams 3 have slots at opposite positions for mounting the lower test plate 4, preventing paint from being removed from its surface. The lower test plate 4 is located directly below the upper test plate 2. Both the upper test plate 2 and the lower test plate 4 are coated with paint. The conveyor rollers 7 move the upper test plate 2 below the upper manifold and nozzle 1, and the lower test plate 4 above the lower manifold and nozzle 5. A water curtain 8 is formed between the upper manifold and nozzle 1 and the upper test plate 2, and between the lower manifold and nozzle 5 and the lower test plate 4.

[0021] The working process of this utility model is as follows: First, the uniformity testing device is hoisted to the conveyor roller conveyor using a crane. The center line of the testing device must coincide with the center line of the roller conveyor (here, the crane is used to lift the device, and the head and tail of the testing device are marked on the roller conveyor, and the center line is manually adjusted for alignment). The device is then conveyed into the upper and lower frames of the cooling equipment via the conveyor roller conveyor. The upper and lower test plates inside the device are coated with uniform paint. The uniformity testing device is then conveyed to the nozzle position to be tested. The upper and lower nozzles of the cooling equipment are manually operated to start spraying water. The water jets are sprayed onto the test plates, forming multiple water jet impact marks on the paint surface. By comparing the size and distribution of the marks, the unobstructed state of each nozzle is determined, thereby judging whether the equipment is cooling uniformly.

[0022] This invention eliminates the need for manual entry into the frame for inspection, resulting in high testing efficiency. Technicians can effectively determine the uniformity of water output from the nozzles based on the marks left by the water jets. Furthermore, the inspection process is highly standardized, guiding maintenance personnel to address nozzle blockages or replacements in a targeted manner. This improves the cooling uniformity of the ultra-fast cooling equipment, reduces residual stress in the steel plates after cooling, and ensures performance stability.

[0023] Example 2

[0024] like Figure 1 and Figure 2 As shown, this utility model discloses an ultrafast cold nozzle impact uniformity testing device, including a conveyor plate 6. The conveyor plate 6 is a rectangular steel plate with a thickness of 28~32mm, preferably 30mm, providing good rigidity to prevent deformation during hoisting. The specific width and length are determined based on the manifold width and roller spacing. Two lower support beams 3 are arranged side-by-side along the length of the conveyor plate 6. The lower support beams 3 are made of 10# channel steel, providing high strength and load-bearing capacity to prevent deformation during operation. A transmission roller conveyor 7 is arranged below the two lower support beams 3, driving the conveyor plate 6 and the lower support beams 3 to move.

[0025] An upper test plate 2 is mounted on the conveyor plate 6. Two lower support beams 3 have slots at opposite positions for mounting the lower test plate 4, preventing paint from being removed from its surface. The lower test plate 4 is located directly below the upper test plate 2. Both the upper test plate 2 and the lower test plate 4 are made of steel plates with a thickness of 7-9 mm, preferably 8 mm, to prevent water from tilting the test plates.

[0026] The upper test plate 2 and the lower test plate 4 are coated with paint, with a paint thickness of over 100µm (using a roller brush, applied 3-4 times; the paint cannot be mixed with cleaning agents). The conveyor roller 7 moves the upper test plate 2 to below the upper manifold and nozzle 1, and moves the lower test plate 4 to above the lower manifold and nozzle 5. Each manifold is equipped with hundreds of nozzles at even intervals. A water curtain 8 is formed between the upper manifold and nozzle 1 and the upper test plate 2, and between the lower manifold and nozzle 5 and the lower test plate 4.

[0027] The number of sets of upper test plate 2 and lower test plate 4 is N, where N is an integer greater than or equal to 1. This invention can create multiple mounting slots for the test plates according to the number and spacing of the manifolds, placing multiple lower test plates 4 and corresponding upper test plates 2, thereby enabling the testing of the uniformity of multiple manifolds with nozzles.

[0028] In this invention, the painted testing device is adjusted to the conveyor roller 7. The center line of the testing device must coincide with the center line of the conveyor roller 7 (here, a crane is used to lift it up, and the head and tail of the testing device are marked on the roller, and the center line is manually adjusted for alignment). The height between the upper and lower frames of the cooling equipment is set to be more than 350mm to facilitate observation of the running position; at the same time, it should not exceed 500mm to prevent the water column from scattering and affecting the test results.

[0029] The above are merely preferred embodiments of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. An ultrafast cooling nozzle strike uniformity testing apparatus, characterized by: The system includes a conveyor plate (6), under which two lower support beams (3) are arranged side by side along the length direction. A conveyor roller (7) is arranged under the two lower support beams (3). An upper test plate (2) is arranged on the conveyor plate (6). The two lower support beams (3) are respectively provided with slots at opposite positions. The slots are used to install the lower test plate (4). The lower test plate (4) is located directly below the upper test plate (2). The upper test plate (2) and the lower test plate (4) are painted with a paint layer. The conveyor roller (7) drives the upper test plate (2) to below the upper manifold and nozzle (1) and drives the lower test plate (4) to above the lower manifold and nozzle (5). A water curtain (8) is formed between the upper manifold and nozzle (1) and the upper test plate (2), and between the lower manifold and nozzle (5) and the lower test plate (4).

2. The ultrafast cooling nozzle strike uniformity test device of claim 1, wherein: The conveyor plate (6) is a rectangular steel plate with a thickness of 28~32mm.

3. The ultrafast cooling nozzle strike uniformity test apparatus of claim 1, wherein: The thickness of the paint layer on the upper test plate (2) and the lower test plate (4) is greater than 100 μm.

4. The ultrafast cooling nozzle strike uniformity test apparatus of claim 1, wherein: The lower support beam (3) is made of 10# channel steel.

5. The ultrafast cooling nozzle strike uniformity test apparatus of claim 1, wherein: The upper test plate (2) and the lower test plate (4) are steel plates with a thickness of 7~9mm.

6. The ultrafast cooling nozzle strike uniformity test apparatus of claim 1, wherein: The distance between the upper manifold and nozzle (1) and the upper test plate (2) is 350~500mm.

7. The ultrafast cooling nozzle strike uniformity test apparatus of claim 1, wherein: The distance between the lower manifold and nozzle (5) and the lower test plate (4) is 350~500mm.

8. The ultrafast cooling nozzle strike uniformity test apparatus of claim 1, wherein: The number of groups of the upper test board (2) and the lower test board (4) is N, where N is an integer greater than or equal to 1.

Images