Online detection device for high-pressure water descaling machine

Abstract

The utility model discloses a high pressure water descaling machine on-line detection device, which comprises a water shape test unit, the water shape test unit comprises a support plate, two water shape test plates, two positioning cross beams and two positioning longitudinal beams, the two positioning longitudinal beams are placed on a conveying roller of a descaling machine and are parallel to the conveying direction of the conveying roller, and the support plate is arranged on the support plate. The supporting plate is placed between the two positioning longitudinal beams, the two water shape testing plates are attached to the upper portion and the lower portion of the supporting plate respectively, and the two ends of the water shape testing plates and the two ends of the supporting plate are connected with the middles of the two positioning longitudinal beams respectively. The two positioning cross beams are connected with the front ends and the rear ends of the water shape testing plate and the supporting plate respectively, and the two ends of the positioning cross beams are connected with the two positioning longitudinal beams respectively. According to the utility model, the two water shape test plates in the water shape test unit are used for simultaneously detecting the water shape parameters of the upper and lower headers of a group of headers of the descaling machine, so that the online safe and rapid detection of the high-pressure water descaling effect can be realized, reliable information is provided for the maintenance of the headers, and the efficient operation of water descaling equipment is ensured.

Description

Technical Field

[0001] The utility model relates to an online detection device for a high-pressure water descaling machine, which can quickly and accurately detect the descaling effect and belongs to the technical field of metallurgical equipment. Background Art

[0002] Before the production of hot-rolled thin slabs, billets, rail beams and other products, it is necessary to perform high-pressure water descaling on the pre-rolled semi-finished products. The main reason is that the surface of the hot-rolled slab will produce a large amount of F e O、F e3 Iron oxide scale, a highly hard mixture of iron oxides such as O4, can cause various surface defects if not thoroughly cleaned before hot rolling. To achieve higher surface quality and production efficiency targets, manufacturers both domestically and internationally have adopted high-pressure water descaling technology. Many of these descaling systems are designed as a box structure, housing multiple descaling manifolds. Different high-pressure nozzles are selected based on factors such as product quality requirements, on-site operating conditions, operating and maintenance costs, and the controllable temperature drop of pre-rolled semi-finished products. Due to the high instantaneous water pressure within the box (typically exceeding 300 bar), the manifolds are arranged in different directions, up and down, front and back. This causes iron oxide to scatter during descaling, making it difficult for personnel to visually monitor the descaling results online, posing a high safety risk. Designing a separate offline high-pressure testing device for each new manifold would incur significant costs and result in low utilization. The descaling manifold nozzle components wear out over time, resulting in a certain degree of degradation in the descaling effect. Inadequate water descaling equipment can increase production costs and impact production plans.

[0003] At present, in order to effectively control the effect of high-pressure water descaling and reduce the consumption of spare parts and auxiliary materials, it is also necessary to simultaneously design a safe and fast online detection process and testing device to timely control whether the key parameters such as the water shape coverage and jet pressure of the water descaling manifold nozzle meet the process design requirements, and at the same time, conduct online inspection to see whether the water quality of the high-pressure circulating water used for descaling under complex working conditions meets the conditions for the nozzle to be put into use, so as to avoid excessive loss of high-cost spare parts such as manifolds and nozzles.

[0004] In view of the above situation, it is necessary to design an online detection device for high-pressure water descaling machine to intuitively and effectively detect whether the various parameters of the descaling water shape meet the design and production process requirements, so as to ensure the efficient operation of the water descaling equipment. Utility Model Content

[0005] The purpose of the utility model is to provide an online detection device for a high-pressure water descaling machine to address the shortcomings of the existing technology, so as to realize online safe and rapid inspection of the high-pressure water descaling effect and ensure the efficient operation of the water descaling equipment.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] An online detection device for a high-pressure water descaling machine includes a water shape testing unit, which includes a support plate, two water shape testing plates, two positioning cross beams and two positioning longitudinal beams. The two positioning longitudinal beams are placed on the conveying rollers of the descaling machine and are parallel to the conveying direction of the conveying rollers. The support plate is placed horizontally between the two positioning longitudinal beams. The two water shape testing plates are respectively abutted against the upper and lower parts of the support plate. The two ends of the water shape test plate and the support plate are respectively connected to the middle parts of the two positioning longitudinal beams; the two positioning cross beams are perpendicular to the two positioning longitudinal beams and are respectively connected to the front and rear ends of the water shape test plate and the support plate, and the two ends of the positioning cross beam are respectively connected to the two positioning longitudinal beams.

[0008] The above-mentioned high-pressure water descaling machine online detection device, the two ends of the water shape test plate and the support plate are respectively connected to the middle of the two positioning longitudinal beams through two pairs of end connecting plates, one end of the two end connecting plates in each pair of end connecting plates is respectively attached to the outside of the two water shape test plates and connected to the water shape test plate and the support plate through bolts, and the other ends of the two end connecting plates are respectively attached to the upper surface and lower surface of the corresponding positioning longitudinal beams and fixedly connected to the positioning longitudinal beams through bolts.

[0009] In the above-mentioned online detection device for high-pressure water descaling machine, a groove is provided on the side of the positioning beam opposite to the water shape test plate, and the edges of the water shape test plate and the support plate are embedded in the groove on the positioning beam.

[0010] In the above-mentioned online detection device for the high-pressure water descaling machine, a thickness compensation plate is provided between the water shape testing plate and the support plate.

[0011] In the above-mentioned online detection device for the high-pressure water descaling machine, a connecting plate thickness compensation pad is provided between the end connecting plate and the positioning longitudinal beam.

[0012] The above-mentioned high-pressure water descaling machine online detection device, the water shape testing units are provided in plurality, which are arranged along the conveying direction of the descaling machine conveying roller, each water shape testing unit corresponds to a group of manifolds of the descaling machine, and the positioning longitudinal beams of adjacent water shape testing units are connected together by longitudinal beam connecting bolts.

[0013] In the above-mentioned online detection device for the high-pressure water descaling machine, the bolt holes on the positioning longitudinal beam that match the longitudinal beam connecting bolts are long holes.

[0014] The above-mentioned high-pressure water descaling machine online detection device has a positioning end beam corresponding to the clamping roller of the descaling machine provided between the front ends of the two positioning longitudinal beams of the frontmost water shape testing unit, and the two ends of the positioning end beam are respectively connected to the front ends of the two positioning longitudinal beams by bolts.

[0015] The online detection device for the high-pressure water descaling machine is provided with lifting rings on the positioning end beam and the positioning cross beam.

[0016] In the above-mentioned online detection device for the high-pressure water descaling machine, the water shape testing plate is a rubber plate.

[0017] The utility model utilizes two water shape test plates in the water shape test unit to simultaneously detect the water shape parameters of the upper and lower headers of a group of headers of the descaling machine, and then judges the high-pressure water descaling effect of the hot-rolled slab. It can realize online safe and rapid inspection of the high-pressure water descaling effect, provide reliable information for the maintenance of the headers, and ensure the efficient operation of the water descaling equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0019] Figure 1 This is a schematic diagram of the assembly of a water-shaped test unit;

[0020] Figure 2 It is a schematic diagram of the assembly of two water-shaped test units;

[0021] Figure 3 yes Figure 2 AA cross-sectional view;

[0022] Figure 4 yes Figure 2 BB cross-sectional view;

[0023] Figure 5 yes Figure 2 A top view of

[0024] Figure 6 It is a test diagram of two water shape test units in the descaling box;

[0025] Figure 7 It is a structural diagram of the water shape test plate;

[0026] Figure 8 It is a structural diagram of the positioning beam;

[0027] Figure 9 It is a structural diagram of the positioning longitudinal beam;

[0028] Figure 10 It is a structural diagram of the end connecting plate;

[0029] Figure 11 It is a structural diagram of the support plate.

[0030] The numbers in the figure are as follows: 1. Water shape test plate, 2. Support plate, 3. Positioning longitudinal beam, 4. Longitudinal beam connecting bolts, 5. Collector, 6. Clamping roller, 7. Transport roller, 8. Thickness compensation plate, 9. End connecting plate, 10. Connecting plate thickness compensation pad, 11. Positioning crossbeam, 12. Lifting ring, 13. Positioning end beam. DETAILED DESCRIPTION

[0031] The utility model provides an online detection device for a high-pressure water descaling machine, which can realize the rapid inspection of the water shape of the manifold nozzle in the high-pressure water descaling box. The entire detection time can be reduced to less than 5 minutes, achieving the purpose of online safe and effective inspection of the main parameters of the water shape of the high-pressure nozzle, ensuring the efficient operation of the water descaling equipment.

[0032] See also Figures 1 to 11 The utility model includes one or more water shape testing units, each water shape testing unit corresponds to a group of manifolds 5 of the descaling machine, and each water shape testing unit includes a support plate 2, two water shape testing plates 1, two pairs of end connecting plates 9, two positioning beams 11, two positioning longitudinal beams 3 and multiple lifting rings 12. The two positioning longitudinal beams 3 are placed on the conveying roller 7 of the descaling machine. The length direction of the positioning longitudinal beam 3 is parallel to the conveying direction of the conveying roller 7 (that is, parallel to the rolling direction of the rolling mill). The support plate 2 is horizontally placed between the two positioning longitudinal beams 3. The two water shape test plates 1 are placed horizontally and are respectively located at the upper and lower parts of the support plate 2. The two ends of the water shape test plate 1 and the support plate 2 are respectively connected to the middle parts of the two positioning longitudinal beams 3 through two pairs of end connecting plates 9. One end of the two end connecting plates 9 in each pair of end connecting plates 9 is respectively attached to the outer sides of the two water shape test plates 1 and connected to the water shape test plate 1 and the support plate 2 by bolts. The other ends of the two end connecting plates 9 are respectively attached to the upper and lower surfaces of the corresponding positioning longitudinal beams 3 and fixedly connected to the positioning longitudinal beams 3 by bolts. The two positioning crossbeams 11 are perpendicular to the two positioning longitudinal beams 3 and are respectively located at the front and rear ends of the water shape test plate 1 and the support plate 2. The two ends of the positioning crossbeam 11 are respectively connected to the two positioning longitudinal beams 3 by bolts. The positioning crossbeam 11 is provided with a groove on the side opposite to the water shape test plate 1. The edges of the water shape test plate 1 and the support plate 2 are embedded in the grooves on the positioning crossbeam 11. After assembly, the water shape test plate 1 is ensured to be accurately positioned in the rolling direction. The grooves on the positioning crossbeam 11 play a role in positioning and protecting the water shape test plate 1, preventing the water shape test plate 1 from being deformed or damaged by external forces during the transportation of the detection device, thereby increasing the service life of the utility model.

[0033] See also Figure 3 、 Figure 6 The two water shape test plates 1 are respectively opposite to the upper and lower headers of a group of headers 5 of the descaling machine, and the high-pressure water sprayed from the nozzles on the upper and lower headers is sprayed on the two water shape test plates 1 respectively.

[0034] A thickness compensation plate 8 is provided between the water shape test plate 1 and the support plate 2. Multiple thickness compensation plates 8 can be installed according to the thickness requirements of the hot-rolled slab, and are installed between the two water shape test plates 1 and the support plates 2 respectively. A connecting plate thickness compensation pad 10 is also provided between each end connecting plate 9 and the positioning longitudinal beam 3.

[0035] See also Figure 1 、 Figure 4 、 Figure 6 The end connecting plates 9 and connecting plate thickness compensation pads 10 are used to laterally position the water shape test plate 1, support plate 2, and thickness compensation plate 8. Bolts secure them to the positioning longitudinal beams 3 to ensure accurate lateral positioning of the water shape test plate 1. One water shape test unit can test a group of water descaling headers.

[0036] See also Figure 2 、 Figure 6 As shown, if multiple groups of collecting pipes 5 are provided in the box of the descaling machine, multiple water shape testing units arranged along the conveying direction of the conveying roller 7 need to be set up, and the water shape parameters of the multiple groups of collecting pipes 5 are synchronously detected by multiple water shape testing units respectively. The positioning longitudinal beams 3 of adjacent water shape testing units are connected together by longitudinal beam connecting bolts 4. In order to facilitate the adjustment of the spacing of the water shape test plates 1, the bolt holes on the positioning longitudinal beams 3 that match the longitudinal beam connecting bolts 4 are long holes.

[0037] See also Figure 1 and Figure 2 A positioning end beam 13 is connected between the front ends of the two positioning longitudinal beams 3 of the frontmost water shape test unit. The two ends of the positioning end beam 13 are respectively connected to the front ends of the two positioning longitudinal beams 3 by bolts. For the convenience of processing, the structure of the positioning end beam 13 is the same as the positioning crossbeam 11. A lifting ring 12 is installed on the positioning end beam 13 and the positioning crossbeam 11 for quickly lifting and positioning the water shape test unit. After the water shape test unit is assembled into one, it can be transported to the descaling machine box by the conveying roller 7, and then the positioning end beam 13 is pressed by the clamping roller 6 to position it in the rolling direction; if the descaling machine does not have a clamping roller 6, a wire rope or other lock can be connected to the lifting rings at both ends in the rolling direction, and the water shape test unit is positioned by the wire rope or other lock. The lifting ring is fixed to one side of the unprocessed groove of the positioning crossbeam. The lifting ring can preferably be welded to the positioning crossbeam to improve stability.

[0038] The positioning beam 11 is made of ordinary steel and needs to be designed according to the length of the water-shape test plate. The thickness of the positioning beam 11 needs to be processed according to the thickness of the hot-rolled slab. The positioning longitudinal beam 3 is also made of ordinary steel and needs to be processed according to the dimensions of the water-shape test plate 1 and the positioning beam 11. The water-shape test plate 1 is a rubber plate. To save costs, old rubber or colloid material plates can be used for processing and installation. The material should not be too hard. Generally, the water shape can be revealed after being impacted by the high-pressure water manifold nozzle for about 10 seconds. This can save water and shorten the test time. Be careful not to choose a material that is too soft, otherwise it will easily crack and fly under the impact of high-pressure water. The support plate 2 can be made of ordinary steel plate or a harder wooden board. Its thickness is processed according to the thickness of the hot-rolled slab and the distance between the manifold nozzle and the hot-rolled slab when the manifold nozzle is in the working state. In order to avoid increasing the production cost by processing multiple support plates with different thicknesses, a thickness compensation plate 8 can be added according to the deviation value. The plane size of the support plate can be processed according to the size of the water-shape test plate. The thickness compensation plate 8 can be a used water-shaped test plate. If cost permits, a flat steel plate or high-hardness composite plate can be processed according to the size of the water-shaped test plate to improve the flatness of the water-shaped test plate, ensure that there is no physical deviation on the test surface, and the test size is accurate; the end connecting plate 9 is a machined steel plate. The connecting plate thickness compensation pad 10 is a machined steel plate. It is necessary to process connecting plate thickness compensation pads 10 of various thicknesses to ensure that the thickness value of the assembled water-shaped test plate, support plate, and thickness compensation plate is controlled within 3mm of the thickness value of the assembled positioning longitudinal beam 3 and connecting plate thickness compensation pad. This ensures that the horizontal flatness of the water-shaped test plate meets the test requirements during the test.

[0039] The utility model can quickly test the water shape parameters of the water descaling manifold in the descaling machine box online, and is simple to manufacture, economical and durable, easy to assemble and transport, and highly safe.

[0040] When the descaling machine is tested using the utility model, the high-pressure water manifold nozzle sprays water for about 10 seconds. The high-pressure water sprayed from all the nozzles of each manifold in the descaling machine casing will produce a water shape diagram on the corresponding water shape test plate 1. After the detection device is taken out from the descaling machine casing, the manifold water shape parameters can be measured through the water shape diagram, including the fan-shaped spray angle θ1 of the high-pressure nozzle, the inclination angle θ2 of the high-pressure nozzle and the vertical line of the hot-rolled slab, the transverse deflection angle θ3 of the high-pressure nozzle and the hot-rolled slab, the overlapping size W1 of the fan-shaped jet of the high-pressure nozzle, the fan-shaped watermark width W2 of the spray surface, etc. According to these parameters, it can be judged whether the descaling machine meets the design requirements. If a high-pressure nozzle fan-shaped spray angle θ1 is different, the corresponding water shape will present an irregular water shape; if the deflection angles of adjacent water shape graphs on the water shape test plate 1 are different, the inclination angle θ2 between the high-pressure nozzle and the vertical line of the hot-rolled slab and the deflection angle θ3 between the high-pressure nozzle and the horizontal line of the hot-rolled slab will be abnormal, and the machine needs to be taken offline for maintenance; if the adjacent water shape graphs on the water shape test plate 1 detect deviations in the overlapping size W1 of the high-pressure nozzle fan-shaped jet and the fan-shaped watermark width W2 of the spray surface, the corresponding nozzle needs to be adjusted. Damage to some nozzles will cause increased deviations in related parameters. After detecting abnormal conditions through the water shape data presented by the water shape test plate 1, the manifold is adjusted and maintained in time to ensure that the descaling effect of the descaling machine meets the process design requirements.

Claims

1. An online detection device for a high-pressure water descaling machine, characterized in that: The invention comprises a water shape test unit, wherein the water shape test unit comprises a support plate (2), two water shape test plates (1), two positioning crossbeams (11) and two positioning longitudinal beams (3), wherein the two positioning longitudinal beams (3) are placed on a conveying roller (7) of a descaling machine and are parallel to the conveying direction of the conveying roller (7), the support plate (2) is horizontally placed between the two positioning longitudinal beams (3), the two water shape test plates (1) are respectively abutted against the upper part and the lower part of the support plate (2), and the two ends of the water shape test plate (1) and the support plate (2) are respectively connected to the middle part of the two positioning longitudinal beams (3); the two positioning crossbeams (11) are perpendicular to the two positioning longitudinal beams (3) and are respectively connected to the front end and the rear end of the water shape test plate (1) and the support plate (2), and the two ends of the positioning crossbeam (11) are respectively connected to the two positioning longitudinal beams (3).

2. The online detection device for high-pressure water descaling machine according to claim 1 is characterized in that: The two ends of the water shape test plate (1) and the support plate (2) are respectively connected to the middle of the two positioning longitudinal beams (3) through two pairs of end connecting plates (9), one end of the two end connecting plates (9) in each pair of end connecting plates (9) is respectively attached to the outside of the two water shape test plates (1) and connected to the water shape test plate (1) and the support plate (2) through bolts, and the other ends of the two end connecting plates (9) are respectively attached to the upper surface and the lower surface of the corresponding positioning longitudinal beam (3) and fixedly connected to the positioning longitudinal beam (3) through bolts.

3. The online detection device for high-pressure water descaling machine according to claim 2, characterized in that: A groove is provided on the side of the positioning beam (11) opposite to the water shape test plate (1), and the edges of the water shape test plate (1) and the support plate (2) are embedded in the groove on the positioning beam (11).

4. The online detection device for high-pressure water descaling machine according to claim 3 is characterized in that: A thickness compensation plate (8) is provided between the water shape test plate (1) and the support plate (2).

5. The online detection device for high-pressure water descaling machine according to claim 4 is characterized in that: A connecting plate thickness compensation pad (10) is provided between the end connecting plate (9) and the positioning longitudinal beam (3).

6. An online detection device for a high-pressure water descaling machine according to any one of claims 1 to 5, characterized in that: A plurality of water shape test units are provided and arranged along the conveying direction of the descaling machine conveying roller (7). Each water shape test unit corresponds to a group of headers (5) of the descaling machine. Positioning longitudinal beams (3) of adjacent water shape test units are connected together via longitudinal beam connecting bolts (4).

7. The online detection device for high-pressure water descaling machine according to claim 6, characterized in that: The bolt holes on the positioning longitudinal beam (3) that match the longitudinal beam connecting bolts (4) are long holes.

8. The online detection device for high-pressure water descaling machine according to claim 7, characterized in that: A positioning end beam (13) corresponding to the clamping roller (6) of the descaling machine is provided between the front ends of the two positioning longitudinal beams (3) of the frontmost water shape test unit, and both ends of the positioning end beam (13) are connected to the front ends of the two positioning longitudinal beams (3) respectively through bolts.

9. The online detection device for high-pressure water descaling machine according to claim 8, characterized in that: A lifting ring (12) is installed on the positioning end beam (13) and the positioning cross beam (11).

10. The online detection device for high-pressure water descaling machine according to claim 9, characterized in that: The water shape test plate (1) is a rubber plate.

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