Convenient maintenance device for secondary cooling nozzle of continuous casting machine

Abstract

The utility model provides a convenient maintenance device for a secondary cooling nozzle of a continuous casting machine, which comprises a water supply device, an air supply device, at least one quick clamping device and a sample plate ruler, and the quick clamping device is connected with the water supply device and the air supply device through a first pipeline and a second pipeline respectively. The first pipeline and the second pipeline are installed on an overhaul site workbench, the air supply device is connected with an external compressed air main pipe, each rapid clamping device is provided with a secondary cooling nozzle to be overhauled, and the sample plate ruler is arranged right in front of a nozzle of the secondary cooling nozzle to be overhauled. According to the utility model, the maintenance process is efficient, rapid, convenient and rapid, the complicated process of judging the secondary cooling water nozzle by overall water testing of the fan-shaped section is made up, and the influence of the maintenance result of only judging whether the nozzle is blocked by human eyes on the overall use efficiency of the nozzle can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of continuous casting machines, and in particular to a convenient secondary cooling nozzle maintenance device for continuous casting machines. Background Art

[0002] The secondary cooling nozzle of the continuous casting machine is a key equipment component used for surface cooling of the ingot in continuous casting production. According to the cooling mechanism of the ingot and the actual production requirements, at present, the continuous casting machine mostly adopts gas mist cooling. Its outstanding feature is the reasonable optimization of the spray angle and atomization particle size, which can achieve uniform and high-intensity cooling and ensure the quality of the ingot.

[0003] In actual use, when a nozzle is used for a period of time and is repaired offline, it is often only possible to determine whether to continue using it by testing the water and pressure of the fan-shaped segment as a whole and observing it with the naked eye from a distance to see if it is blocked. The efficiency of the nozzle cannot be guaranteed when the nozzle is put online after being repaired in this way. A nozzle with reduced energy efficiency will directly affect the cooling effect of the ingot and even the internal quality of the ingot. Utility Model Content

[0004] In view of the technical problems raised above, a convenient secondary cooling nozzle maintenance device for a continuous casting machine is provided.

[0005] The technical means adopted by the utility model are as follows:

[0006] A convenient maintenance device for secondary cooling nozzles of a continuous casting machine comprises: a water supply device, an air supply device, at least one quick clamping device and a sample ruler, wherein the quick clamping device is connected to the water supply device and the air supply device through a first pipeline and a second pipeline respectively, the first pipeline and the second pipeline are installed on a maintenance site workbench, the air supply device is connected to an external air compressor main pipe, a secondary cooling nozzle to be repaired is installed on each of the quick clamping devices, and the sample ruler is placed directly in front of the nozzle of the secondary cooling nozzle to be repaired.

[0007] Furthermore, the water supply device includes a water tank, a water supply pipeline, a water pump, a pressure gauge and a first valve, the water supply pipeline includes a first water supply pipeline and a second water supply pipeline, one end of the first water supply pipeline is connected to the water tank, and the other end is connected to the first pipeline; the water pump, the pressure gauge and the first valve are arranged in sequence on the first water supply pipeline, the water pump is placed between the pressure gauge and the water tank, and the first valve is connected to the water tank through the second water supply pipeline.

[0008] Furthermore, the air supply device includes an air supply pipeline and a second valve, one end of the air supply pipeline is connected to the external air compression wind main pipe, and the other end is connected to the second pipeline; the second valve is arranged on the air supply pipeline.

[0009] Furthermore, the quick clamping device includes a fixed clamping device and a clamping device, the second cooling nozzle to be repaired is inserted into the fixed clamping device, and the clamping device is connected to the fixed clamping device, and is used to clamp and fix the second cooling nozzle to be repaired on the fixed clamping device, and the ends of the first pipeline and the second pipeline are fixedly connected to the fixed clamping device, and the second cooling nozzle to be repaired installed on the quick clamping device is connected to the first pipeline and the second pipeline.

[0010] Furthermore, the fixing and clamping device includes a main body bracket having an installation space therein, the secondary cooling nozzle to be repaired is inserted into the installation space, and the ends of the first pipeline and the second pipeline are welded to the first side wall of the main body bracket.

[0011] Furthermore, the clamping device is a bolt clamping device, including multiple groups of bolts and a clamping plate. Multiple mounting holes are opened on the second side wall of the main body bracket that is opposite to the first side wall. The multiple groups of bolts are respectively connected to the multiple mounting holes. The ends of the multiple groups of bolts passing through the mounting holes are all connected to the clamping plate. The clamping plate is located in the installation space. By tightening the bolts, the second cooling nozzle is contact-clamped using the clamping plate.

[0012] Furthermore, the first valve is a manual control valve.

[0013] Furthermore, the second valve is a manual control valve.

[0014] Furthermore, the sample ruler is an iron plate with a certain wall thickness, and is composed of an upper conical structure with an opening facing upward and a lower square structure.

[0015] The utility model also provides a convenient maintenance method for the secondary cooling nozzle maintenance device of the continuous casting machine, comprising the following steps:

[0016] Step 1: Make separate manually controlled water and gas pipelines, install water pumps, pressure gauges, first valves, second valves, first pipelines and second pipelines on the water and gas pipelines respectively, and connect the water and gas pipelines to the water tank and the external air compressor main pipe respectively to form a maintenance device with power pump-pipeline-control valve-pressure display, and connect it to the maintenance site workbench;

[0017] Step 2: Make a quick clamping device to facilitate the quick installation and connection of the second cooling nozzle to be repaired; the completed quick clamping device is connected to the water and gas pipelines through the first pipeline and the second pipeline;

[0018] Step 3: Make a sample ruler according to the spray shape requirements of the secondary cooling nozzle;

[0019] Step 4: The second cooling nozzle to be repaired is installed into the quick clamping device: the second cooling nozzle to be repaired is installed on the fixed clamping device, and is clamped and fixed by the clamping device, and at the same time, the second cooling nozzle to be repaired is connected with the first pipeline and the second pipeline;

[0020] Step 5: Place the sample ruler in front of the nozzle of the secondary cooling nozzle to be repaired;

[0021] Step 6: Start the water pump, and use the pressure gauge to detect and display the pressure to ensure that the pressure reaches the use requirements;

[0022] Step 7, open the first valve and the second valve, use the water pump to transport water through the water supply pipeline and the first pipeline to the second cooling nozzle to be repaired, and use the external air pressure main pipe to transport the compressed air through the air supply pipeline and the second pipeline to the second cooling nozzle to be repaired;

[0023] Step 8. The secondary cooling nozzle to be inspected sprays aerosol onto the sample ruler. The spray shape is compared with the sample ruler to determine whether the spray angle of the secondary cooling nozzle to be inspected is qualified, so as to determine whether the secondary cooling nozzle to be inspected is blocked; if the spray angle is unqualified, perform offline inspection of the secondary cooling nozzle.

[0024] Compared with the prior art, the utility model has the following advantages:

[0025] 1. Compared with the traditional technology, the utility model makes up for the complicated process of judging the secondary cooling water nozzle by testing the water of the fan-shaped segment as a whole, and can solve the influence of the inspection result of artificial naked eye only judging whether it is blocked on the overall use efficiency of the nozzle.

[0026] 2. The maintenance process of the utility model is efficient, rapid, convenient and quick.

[0027] 3. The quick clamping device of the utility model can realize the rapid installation of the secondary cooling nozzle, reduce the time for disassembling and assembling bolts and adjusting the seal of the fixed installation of the secondary cooling nozzle; use a sample ruler to measure the spray shape of the water mist sprayed by the nozzle during the maintenance process, which not only eliminates the error of the supervisor's judgment, but also achieves the purpose of rapid and accurate judgment.

[0028] Based on the above reasons, the utility model can be widely promoted in the fields of secondary cooling nozzle maintenance of continuous casting machines, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0030] Figure 1It is a structural schematic diagram of the utility model.

[0031] Figure 2 It is a schematic diagram of a sample ruler of the utility model.

[0032] In the figure: 1. water tank; 2. water pump; 3. pressure gauge; 4. first valve; 5. water supply pipeline; 51. first water supply pipeline; 52. second water supply pipeline; 6. air supply pipeline; 7. second valve; 8. quick clamping device; 81. fixed clamping device; 811. first side wall; 812. second side wall; 82. clamping device; 821. bolt; 822. clamping plate; 9. first pipeline; 10. second pipeline. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] Based on the on-site maintenance experience and thinking, a convenient and fast offline maintenance method is needed to solve the actual situation where the nozzle status is unclear. The utility model provides a convenient continuous casting machine secondary cooling nozzle maintenance device and method, which uses the actual conditions on site to comprehensively repair the nozzle and check the spray shape and flow rate when special testing instruments cannot be purchased. To ensure that the nozzle is correctly judged whether it can continue to be used.

[0035] The utility model discloses a convenient maintenance device for the secondary cooling nozzle of a continuous casting machine, comprising: a water supply device, an air supply device, at least one quick clamping device 8 and a sample ruler, wherein the quick clamping device 8 is connected to the water supply device and the air supply device through a first pipeline 9 and a second pipeline 10 respectively, wherein the first pipeline 9 and the second pipeline 10 are both welded to a support frame of a maintenance site workbench, the air supply device is connected to an external air compressor main pipe, a secondary cooling nozzle to be repaired is installed on each of the quick clamping devices 8, and the sample ruler is placed directly in front of the nozzle of the secondary cooling nozzle to be repaired.

[0036] As a preferred embodiment, the water supply device includes a water tank 1, a water supply pipeline 5, a water pump 2, a pressure gauge 3 and a first valve 4, the water supply pipeline 5 includes a first water supply pipeline 51 and a second water supply pipeline 52, one end of the first water supply pipeline 51 is connected to the water tank 1, and the other end is connected to the first pipeline 9; the water pump 2, the pressure gauge 3 and the first valve 4 are arranged in sequence on the first water supply pipeline 51, the water pump 2 is placed between the pressure gauge 3 and the water tank 1, and the first valve 4 is connected to the water tank 1 through the second water supply pipeline 52.

[0037] As a preferred embodiment, the air supply device is used to provide compressed air for the secondary cooling nozzle to be repaired, and includes an air supply pipeline 6 and a second valve 7. One end of the air supply pipeline 6 is connected to the external compressed air main pipe, and the other end is connected to the second pipeline 10; the second valve 7 is arranged on the air supply pipeline 6. The compressed air is taken from the compressed air pipeline for on-site maintenance, and a branch pipe is connected from the compressed air main pipe. The branch pipe is the second pipeline 10 of the utility model, and the compressed air is manually controlled through the manual control valve.

[0038] As a preferred embodiment, the quick clamping device 8 includes a fixed clamping device 81 and a clamping device 82, the second cooling nozzle to be repaired is inserted into the fixed clamping device 81, and the clamping device 82 is connected to the fixed clamping device 81, and is used to clamp and fix the second cooling nozzle to be repaired on the fixed clamping device 81, and the ends of the first pipeline 9 and the second pipeline 10 are fixedly connected to the fixed clamping device 81, and the second cooling nozzle to be repaired installed on the quick clamping device 8 is connected to the first pipeline 9 and the second pipeline 10.

[0039] As a preferred embodiment, the fixing clamping device 81 includes a main bracket with an installation space inside, the secondary cooling nozzle to be repaired is inserted into the installation space, and the ends of the first pipeline 9 and the second pipeline 10 are welded to the first side wall 811 of the main bracket.

[0040] As a preferred embodiment, the clamping device 82 is a clamping device 82 with bolts 821, including multiple groups of bolts 821 and a clamping plate 822. Multiple mounting holes are opened on the second side wall 812 of the main bracket opposite to the first side wall 811. The multiple groups of bolts 821 are respectively connected to the multiple mounting holes. The ends of the multiple groups of bolts 821 passing through the mounting holes are welded to the clamping plate 822. The clamping plate 822 is located in the installation space. By tightening the bolts 821, the second cooling nozzle is contact-clamped using the clamping plate 822.

[0041] As a preferred embodiment, the first valve 4 and the second valve 7 are both manually controlled valves.

[0042] As a preferred embodiment, the sample ruler is an iron plate with a certain wall thickness, and is composed of an upper conical structure with an opening facing upward and a lower square structure.

[0043] In this embodiment, two groups of quick clamping devices 8 are provided, and two first valves 4 and two second valves 7 are provided respectively, wherein the first group of quick clamping devices 8 and the water tank 1 and the external air pressure main pipe bracket are provided with a first valve 4 and a second valve 7. A first valve 4 and a second valve 7 are provided respectively on the water supply pipeline 5 and the air supply pipeline 6 between the first group of quick clamping devices 8 and the second group of quick clamping devices 8. As shown in the figure, the water tank 1, the water pump 2, the pressure gauge 3, and the first valve 4 are arranged in sequence from right to left.

[0044] Based on the actual situation on site, in order to facilitate maintenance, the utility model provides a convenient maintenance method for the secondary cooling nozzle maintenance device of the continuous casting machine, comprising the following steps:

[0045] Step 1: simulate the model of water and air mixing in the secondary cooling nozzle, make water and air pipelines that can be manually controlled separately, install the water pump 2, the pressure gauge 3, the first valve 4, the second valve 7, the first pipeline 9 and the second pipeline 10 on the water and air pipelines respectively, and connect the water and air pipelines with the water tank 1 and the external air compressor main pipe to form a maintenance device with power pump-pipeline-control valve-pressure display, and connect it to the maintenance site workbench;

[0046] Step 2: Make a quick clamping device 8 to facilitate the quick installation and connection of the second cooling nozzle to be repaired; the completed quick clamping device 8 is connected to the water and gas pipelines through the first pipeline 9 and the second pipeline 10;

[0047] Step 3: Make a sample ruler according to the spray shape requirements of the secondary cooling nozzle. The sample ruler is a maintenance judgment tool and a convenient maintenance judgment method. Specifically, an iron plate is used on site to cut out a fixed angle according to the angle requirements of the nozzle to determine whether the spray angle of the nozzle to be inspected is qualified;

[0048] Step 4: Install the second cooling nozzle to be repaired into the quick clamping device 8: install the second cooling nozzle to be repaired on the fixed clamping device 81, and clamp and fix it through the clamping device 82, and at the same time make the second cooling nozzle to be repaired connected with the first pipeline 9 and the second pipeline 10;

[0049] Step 5: Place the sample ruler in front of the nozzle of the secondary cooling nozzle to be repaired;

[0050] Step 6: Start the water pump 2 (medium pump), and use the pressure gauge 3 to detect and display the pressure to make the pressure reach the use requirement;

[0051] Step 7, open the first valve 4 and the second valve 7 (medium valve), use the water pump 2 to transport water through the water supply pipeline 5 and the first pipeline 9 to the second cooling nozzle to be repaired, and use the external air pressure main pipe to transport the compressed air through the air supply pipeline 6 and the second pipeline 10 to the second cooling nozzle to be repaired;

[0052] Step 8: The secondary cooling nozzle to be repaired sprays aerosol onto the sample ruler, and the spray shape is compared with the sample ruler;

[0053] Step 9, judgment and maintenance completion: According to the pressure of the maintenance device, the secondary cooling nozzle to be repaired can be quickly connected to the maintenance device, and its blockage can be checked and repaired. The sample ruler can be used to check the spray shape, so as to correctly judge whether the secondary cooling nozzle can continue to be used, and realize the convenient maintenance of the offline secondary cooling nozzle. The spray shape is compared with the sample ruler to determine whether the spray angle of the secondary cooling nozzle to be inspected is qualified, so as to determine whether the secondary cooling nozzle to be inspected is blocked; if the spray angle is unqualified, the secondary cooling nozzle is offline for maintenance.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A convenient secondary cooling nozzle maintenance device for a continuous casting machine, characterized in that: include: A water supply device, an air supply device, at least one quick clamping device (8) and a sample ruler, wherein the quick clamping device (8) is connected to the water supply device and the air supply device via a first pipeline (9) and a second pipeline (10), respectively, the first pipeline (9) and the second pipeline (10) are installed on a maintenance site workbench, the air supply device is connected to an external air compressor main pipe, each of the quick clamping devices (8) is installed with a secondary cooling nozzle to be repaired, and the sample ruler is placed directly in front of the nozzle of the secondary cooling nozzle to be repaired.

2. The convenient secondary cooling nozzle maintenance device for continuous casting machine according to claim 1 is characterized in that: The water supply device comprises a water tank (1), a water supply pipeline (5), a water pump (2), a pressure gauge (3) and a first valve (4); the water supply pipeline (5) comprises a first water supply pipeline (51) and a second water supply pipeline (52); one end of the first water supply pipeline (51) is connected to the water tank (1), and the other end is connected to the first pipeline (9); the water pump (2), the pressure gauge (3) and the first valve (4) are arranged on the first water supply pipeline (51) in sequence; the water pump (2) is placed between the pressure gauge (3) and the water tank (1); the first valve (4) is connected to the water tank (1) via the second water supply pipeline (52).

3. The convenient secondary cooling nozzle maintenance device for continuous casting machine according to claim 1 is characterized in that: The air supply device comprises an air supply pipeline (6) and a second valve (7); one end of the air supply pipeline (6) is connected to an external air pressure main pipe, and the other end is connected to a second pipeline (10); the second valve (7) is arranged on the air supply pipeline (6).

4. The convenient secondary cooling nozzle maintenance device for continuous casting machine according to claim 1 is characterized in that: The quick clamping device (8) comprises a fixed clamping device (81) and a clamping device (82); the second cooling nozzle to be repaired is plugged into the fixed clamping device (81); the clamping device (82) is connected to the fixed clamping device (81) and is used to clamp and fix the second cooling nozzle to be repaired on the fixed clamping device (81); ends of the first pipeline (9) and the second pipeline (10) are fixedly connected to the fixed clamping device (81); and the second cooling nozzle to be repaired installed on the quick clamping device (8) is connected to the first pipeline (9) and the second pipeline (10).

5. The convenient secondary cooling nozzle maintenance device for continuous casting machine according to claim 4 is characterized in that: The fixing clamping device (81) comprises a main body bracket having an installation space therein, the secondary cooling nozzle to be repaired is inserted into the installation space, and the ends of the first pipeline (9) and the second pipeline (10) are welded to the first side wall (811) of the main body bracket.

6. The convenient secondary cooling nozzle maintenance device for continuous casting machine according to claim 5 is characterized in that: The clamping device (82) is a bolt clamping device, including multiple groups of bolts (821) and a clamping plate (822). Multiple mounting holes are opened on the second side wall (812) of the main frame that is opposite to the first side wall (811). The multiple groups of bolts (821) are respectively connected to the multiple mounting holes. The ends of the multiple groups of bolts (821) passing through the mounting holes are connected to the clamping plate (822). The clamping plate (822) is located in the installation space. By tightening the bolts (821), the secondary cooling nozzle is contact-clamped using the clamping plate (822).

7. The convenient secondary cooling nozzle maintenance device for continuous casting machine according to claim 2 is characterized in that: The first valve (4) is a manual control valve.

8. The convenient secondary cooling nozzle maintenance device for continuous casting machine according to claim 3 is characterized in that: The second valve (7) is a manual control valve.

9. The convenient secondary cooling nozzle maintenance device for continuous casting machine according to claim 1 is characterized in that: The sample ruler is an iron plate with a certain wall thickness, and is composed of an upper conical structure with an opening facing upward and a lower square structure.

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