Oxy-hydrogen cutting device of plate continuous casting machine

Abstract

The utility model relates to an oxyhydrogen cutting device of a plate continuous casting machine, and belongs to the technical field of metallurgical equipment. According to the technical scheme, an electrolytic bath device (5) comprises a proportioning valve and a hydrogen-oxygen generator, an outlet of the hydrogen-oxygen generator is connected with a cutting device (11) through the proportioning valve, a gas pressurizer (8) is arranged between the electrolytic bath device (5) and the cutting device (11), an exhaust treatment device (12) is arranged above the cutting device (11), and the cutting device (11) is connected with the cutting device (11). The focal length of the cutting device (11) is adjusted through the driving mechanism, and the control system (13) is connected with the proportioning valve, the gas pressurizer (8) and the driving mechanism. According to the utility model, through the proportional adjustment of gas supply and the multi-dimensional focal length adjustment of the cutting nozzle and the adoption of the exhaust treatment device, the operation safety and the working efficiency are improved, the high efficiency and the high precision in the cutting process are ensured, and the emission of harmful smoke dust and noise can be obviously reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of plate continuous casting machine hydrogen-oxygen cutting device, belong to metallurgical equipment technical field. BACKGROUND

[0002] Traditional plate cutting mode includes plasma cutting, flame cutting etc., these methods have many problems, such as the smoke in cutting process is discharged in large quantities, precision is not high, efficiency is low etc.. Especially under the requirement of environmental protection and production efficiency demand of sustainable development, existing cutting technology cannot fully meet the needs of modern metallurgical industry. SUMMARY

[0003] The utility model aims at providing a kind of plate continuous casting machine hydrogen-oxygen cutting device, by carrying out the proportion regulation of gas supply and the multi-dimension focal length adjustment of cutting nozzle, and using exhaust treatment device, improve operation safety and work efficiency, ensure the high efficiency and high precision of cutting process, can significantly reduce the emission of harmful smoke and noise, realize green production, with better economic and social benefits, solve the above problems existing in background art.

[0004] The technical scheme of the utility model is: a kind of plate continuous casting machine hydrogen-oxygen cutting device, include water supply system, electrolytic cell device, gas pressurizer, cutting device, drive mechanism, exhaust treatment device and control system, the water supply system is connected electrolytic cell device, electrolytic cell device includes proportion regulating valve and hydrogen-oxygen generator, the outlet of hydrogen-oxygen generator is connected cutting device by proportion regulating valve, gas pressurizer is arranged between electrolytic cell device and cutting device, exhaust treatment device is set in the top of cutting device, cutting device is adjusted focal length by drive mechanism, control system is connected proportion regulating valve, gas pressurizer and drive mechanism respectively.

[0005] It further includes backflush filter, water supply system is welded with backflush filter by stainless steel pipe, and there is stop valve between water supply system and electrolytic cell device.

[0006] The hydrogen-oxygen generator is connected gas pressurizer by hydrogen-oxygen mixed stainless steel pipeline, and the hydrogen-oxygen mixed stainless steel pipeline is provided with check valve and non-return valve;Gas pressurizer is connected cutting device by hydrogen-oxygen mixed stainless steel pipeline, tank guide chain type hose and fire cutting machine tank guide chain type hose.

[0007] The tank guide chain type hose is arranged along with cutting car movement, and the fire cutting machine tank guide chain type hose is fixedly arranged on the cutting car.

[0008] The control system (13) comprises a pressure control module (14), a flow control module (15) and a cutting control module (16), the pressure control module (14) is connected with the gas pressurizer (8), the flow control module (15) is connected with the proportional regulating valve, and the cutting control module (16) is connected with the driving mechanism.

[0009] The cutting device comprises cutting guns, cutting gun clamping devices and plate positioning mechanisms, the cutting guns comprise main guns and standby guns, each of the main guns and the standby guns has two, and the main guns and the standby guns are arranged on two sides of the cast blank and are arranged along the walking direction of the cast blank; the standby cutting gun gas source is consistent with the main gun gas source, gas is branched by a three-way mode, and the cutting gun is composed of a cylindrical gun body and a nozzle; the cutting gun clamping device is provided with four U-shaped buckles on one side, and forms two sets of clamping rings, the two sets of clamping rings control the main guns and the standby guns respectively, and the buckles are provided with adjusting bolts;

[0010] The driving mechanism comprises a scale and a centering pointer, and the centering pointer is movably arranged, and the moving range of the centering pointer is matched with the position change of the cutting gun;

[0011] The plate positioning mechanism comprises a laser sensor and an actuator, the laser sensor and the actuator are connected with the input end and the output end of the control system (13) respectively, the test range of the laser sensor is matched with the position of the cutting head away from the plate, and the response time of the laser sensor and the actuator is not more than 50 milliseconds.

[0012] The exhaust treatment device (12) comprises a filter and an activated carbon adsorption system, and the outlet end of the exhaust treatment device is connected with the steam pocket.

[0013] The utility model discloses the beneficial effect is: through the proportion adjusting of gas supply and the multi -dimensional focal length adjustment of cutting nozzle, and adopt exhaust treatment device, improve operating safety and work efficiency, ensure the high efficiency and high accuracy of cutting process, can significantly reduce the emission of harmful smoke and noise, realize green production, have better economic and social benefits. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the front view of the utility model;

[0015] Figure 2 It is the plan view of the utility model;

[0016] Figure 3 It is the local schematic view of the utility model;

[0017] In the figure: water supply system 1, backwashing filter 2, stop valve 3, power supply 4, electrolytic cell device 5, one-way valve 6, check valve 7, gas pressurizer 8, tank guide chain type hose 9, fire cutting machine tank guide chain type hose 10, cutting device 11, exhaust treatment device 12, control system 13, pressure control module 14, flow control module 15, cutting control module 16, cutting oxygen 17, preheating oxygen 18, fuel gas 19, ignition gun fuel gas 20. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme of the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments, obviously, the embodiments expressed are a part of the embodiments of the utility model, not all the embodiments, all other embodiments obtained by the ordinary skilled in the art without creative labor based on the embodiments in the utility model belong to the protection scope of the utility model.

[0019] A plate continuous casting machine hydrogen-oxygen cutting device, containing water supply system 1, electrolytic cell device 5, gas pressurizer 8, cutting device 11, driving mechanism, exhaust treatment device 12 and control system 13, the water supply system 1 is connected with electrolytic cell device 5, electrolytic cell device 5 contains proportional regulating valve and hydrogen-oxygen generator, the outlet of hydrogen-oxygen generator is connected with cutting device 11 through proportional regulating valve, gas pressurizer 8 is arranged between electrolytic cell device 5 and cutting device 11, exhaust treatment device 12 is arranged above cutting device 11, cutting device 11 adjusts focal length through driving mechanism, control system 13 is connected with proportional regulating valve, gas pressurizer 8 and driving mechanism respectively.

[0020] It also contains backwashing filter 2, water supply system 1 is welded with backwashing filter 2 through stainless steel pipe, and stop valve 3 is arranged between water supply system 1 and electrolytic cell device 5.

[0021] The hydrogen-oxygen generator is connected with gas pressurizer 8 through hydrogen-oxygen mixed stainless steel pipeline, and one-way valve 6 and check valve 7 are arranged in the hydrogen-oxygen mixed stainless steel pipeline; gas pressurizer 8 is connected with cutting device 11 through hydrogen-oxygen mixed stainless steel pipeline, tank guide chain type hose 9 and fire cutting machine tank guide chain type hose 10.

[0022] The tank guide chain type hose 9 is arranged to move with the cutting vehicle, and the fire cutting machine tank guide chain type hose 10 is fixedly arranged on the cutting vehicle.

[0023] The control system 13 contains pressure control module 14, flow control module 15 and cutting control module 16, the pressure control module 14 is connected with gas pressurizer 8, the flow control module 15 is connected with proportional regulating valve, and the cutting control module 16 is connected with driving mechanism.

[0024] The cutting device includes cutting guns, cutting gun clamping devices, and plate positioning mechanisms. The cutting guns include main guns and backup guns, each of which has two guns arranged on both sides of the cast blank along the walking direction of the cast blank. The backup cutting gun gas source is consistent with the main gun gas source, and the gas is divided by a three-way method. The cutting gun is composed of a cylindrical gun body and a nozzle. The cutting gun clamping device is provided with four U-shaped buckles on one side, forming two sets of clamping rings, which control the main gun and the backup gun respectively. The buckle is provided with an adjusting bolt.

[0025] The driving mechanism includes a scale and a centering pointer. The centering pointer is movably arranged, and the moving range of the centering pointer is matched with the position change of the cutting gun.

[0026] The plate positioning mechanism includes a laser sensor and an actuator. The laser sensor and the actuator are connected to the input end and the output end of the control system 13 respectively. The test range of the laser sensor matches the position of the plate away from the cutting head. The response time of the laser sensor and the actuator is not more than 50 milliseconds.

[0027] The exhaust treatment device 12 includes a filter and an activated carbon adsorption system. The outlet end of the exhaust treatment device is connected to the steam drum.

[0028] In actual application, the water supply system 1 is welded with the backwashing filter 2 through 304 seamless stainless steel pipe, and whether to supply water to the electrolytic cell device 5 is ensured through the stop valve 3. The backwashing filter 2 optimizes the water quality to ensure that the raw water for the hydrogen-oxygen generator of the electrolytic cell device 5 meets the requirements of resistivity ≥1.0x10³Ω·cm and suspended solids <1.0Mg / L.

[0029] High-purity hydrogen source and oxygen source are produced by the hydrogen-oxygen generator of the electrolytic cell device 5. The hydrogen-oxygen generator is model HGQ-10000A. The equipment can remotely display, operate, and monitor the running state (temperature, liquid level, pressure) in real time, and has an alarm function. It can automatically open the valve to add liquid according to the water quantity, and store production data in real time according to the production mode.

[0030] The hydrogen-oxygen generator is internally provided with a transformer, which is rectified by a silicon-controlled rectifier. The rated power of a single device is 45KW. 380V±15%, AC50 / 60HZ (three-phase four-wire) mains are rectified and supplied to the electrolytic cell device for electrolysis.

[0031] The electrolytic cell device 5 is provided with a proportional regulating valve connected with the control system, which can respond to the adjusting instructions of the control system in real time, has a fine proportional regulating function, and is used to adjust the supply ratio of hydrogen and oxygen to meet the cutting needs of plates of different thicknesses and materials.

[0032] Hydrogen and oxygen enter the gas pressurizer 8 through a φ25×3 stainless steel pipe for hydrogen-oxygen mixing. To prevent backflow, a one-way valve 6 and a check valve 7 are installed in the middle of the hydrogen-oxygen mixing stainless steel pipe. The gas pressurizer 8 has an automatic feedback regulation function, which can adjust the ratio in real time according to the actual gas flow rate and pressure.

[0033] After passing through the gas pressurizer 8, the mixed high-pressure gas enters the cutting device 11 via a φ25×3 stainless steel pipe (a hydrogen-oxygen mixture) and a tank-type guide hose 9 that moves with the cutting carriage, and another tank-type guide hose 10 fixed on the cutting carriage. Upon encountering the high-temperature cast billet, a flame is generated to cut the billet. The cutting device automatically adjusts the focal length in multiple dimensions through a drive mechanism connected to the control system, ensuring the beam remains in optimal focus throughout the cutting process. The cutting device is a modular component, facilitating maintenance and replacement. It consists of a main gun, a spare gun, a cutting gun clamping device, and a plate positioning mechanism.

[0034] The generated high-temperature flue gas is purified by the exhaust treatment device 12 and then enters the steam drum to heat the circulating water.

[0035] During production, based on changes in the continuous casting machine's casting speed, the control system 13 performs data analysis and transmits the cutting carriage's running speed, the gas flow rate and pressure required for cutting the billet to the relevant control units via the pressure control module 14, flow control module 15, and cutting control module 16. The control system 13 is based on a high-performance ARM Cortex-M4 microprocessor and works in conjunction with customized cutting software. The cutting path can be pre-planned by the software, which provides optimal gas flow rate, pressure, and cutting speed based on the plate thickness and material. Simultaneously, the cutting software can collect and process real-time data during the cutting process, such as gas consumption, cutting speed, and nozzle temperature. Example 1

[0036] The output ratio of high-purity hydrogen and oxygen is regulated by a precise proportional control valve connected to the control system, which responds to adjustments in real time. The default hydrogen-to-oxygen mixing ratio is set to 4:1, suitable for cutting most carbon steel plates with a thickness of 250-280mm. For specific plate thicknesses, the control system can adjust the gas flow rate to supply the cutting device with the optimal ratio and pressure. When cutting 250mm thick plates, the hydrogen flow rate is set to 500L / min and the oxygen flow rate to 125L / min. The gas flow rate adjustment accuracy is ±0.5%, ensuring stable cutting.

[0037] Example 2

[0038] The cutting device is modularly designed and can be quickly replaced according to different cutting requirements. It includes a cutting gun, a cutting gun clamping device, and a plate positioning mechanism. The cutting gun includes a main gun and a backup gun, each with two guns arranged on both sides of the cast slab along the walking direction of the cast slab. The backup cutting gun gas source is consistent with the main gun gas source, and the gas is divided by a three-way method. The cutting gun is composed of a cylindrical gun body and a nozzle. The cutting gun clamping device is composed of four U-shaped buckles on one side, forming two sets of clamping rings, which are used to control the main gun and the backup gun respectively. The clamping and loosening of the cutting gun are achieved by adjusting the adjusting bolts on the buckles. The driving mechanism is composed of a scale and a centering pointer. By adjusting the position of the cutting gun, the centering pointer is moved to achieve the uniformity of the cast slab cut. When the main gun fails, the backup gun can be directly switched for use, thereby ensuring the normal production of the continuous casting machine. When a nozzle with a diameter of 1.5 mm is used to cut a 250 mm thick carbon steel plate, the control system will control the cutting based on a focal length of 1 mm. The cutting device adjusts the focal length through the driving mechanism, which uses a precision servo motor to adjust the position of the nozzle of the cutting gun, with an adjustment accuracy of ±0.1 mm. The driving mechanism can quickly respond to changes in the focal point caused by the unevenness of the plate surface, thereby maintaining the best cutting effect.

[0039] The plate positioning mechanism is equipped with a series of laser sensors that can accurately measure the distance between the plate and the cutting head and send it to the actuator through the control system. During the cutting process, if the laser sensor detects that the plate position deviates from the predetermined path within 5 mm, the control system will adjust the actuator to make the plate re-align with the cutting path. The response time of the sensor and the actuator does not exceed 50 milliseconds, so as not to affect the continuous cutting process. Example 3

[0040] The exhaust treatment device is equipped with a high-efficiency filter and an activated carbon adsorption system, which can collect and purify the exhaust gas and trace metal particles generated during the hydrogen-oxygen cutting process. It can handle 1000 m 3 of gas flow per minute. The filter can trap particles with a diameter greater than 5 microns, and the activated carbon layer is used to adsorb harmful organic matter in the exhaust gas with an adsorption efficiency of not less than 98%.

[0041] To verify the performance of the device, we conducted a series of tests. In the test of cutting a 250 mm thick carbon steel plate, the device achieved a cutting speed of 2500 mm per minute, with a cutting accuracy of ±0.2 mm. In addition, during the operation of the exhaust treatment device, the gas measuring instrument did not detect any excessive exhaust gas or particulate matter within 8 hours of continuous operation.

[0042] The utility model has the characteristics of simple and reasonable design, appearance convenient interface simplification, simple structure and strength optimization, convenient operation and maintenance etc, improves operation safety and work efficiency; adopts the exhaust treatment device of special design, can collect and handle the waste gas generated in the cutting process, can significantly reduce the emission of harmful smoke and noise, realizes green production; uses hydrogen oxygen generator instead of traditional propane gas, has better economic and social benefits.

[0043] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than limit them; although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it still can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

[0044] The preferred embodiments of the utility model are described in detail above, but the utility model is not limited to the specific details in the above embodiments, and various simple modifications can be made to the technical solutions of the utility model within the technical concept range of the utility model, and these simple modifications all belong to the protection range of the utility model.

Claims

1. A plate continuous caster hydrogen oxygen cutting device, characterized by: The application relates to a cutting device for a continuous casting production line, which comprises a water supply system (1), an electrolytic cell device (5), a gas pressurizer (8), a cutting device (11), a driving mechanism, an exhaust treatment device (12) and a control system (13), the water supply system (1) is connected with the electrolytic cell device (5), the electrolytic cell device (5) comprises a proportional regulating valve and a hydrogen-oxygen generator, the outlet of the hydrogen-oxygen generator is connected with the cutting device (11) through the proportional regulating valve, the gas pressurizer (8) is arranged between the electrolytic cell device (5) and the cutting device (11), the exhaust treatment device (12) is arranged above the cutting device (11), the cutting device (11) is adjusted in focal length through the driving mechanism, and the control system (13) is connected with the proportional regulating valve, the gas pressurizer (8) and the driving mechanism respectively.

2. A plate continuous caster oxy-hydrogen cutting device according to claim 1, characterized in that: The application further comprises a backwashing filter (2), the water supply system (1) is welded with the backwashing filter (2) through a stainless steel pipe, and a stop valve (3) is arranged between the water supply system (1) and the electrolytic cell device (5).

3. The apparatus for cutting a plate material by means of a hydrogen-oxygen flame according to claim 1, wherein: The hydrogen-oxygen generator is connected with the gas pressurizer (8) through a hydrogen-oxygen mixed stainless steel pipeline, the hydrogen-oxygen mixed stainless steel pipeline is provided with a one-way valve (6) and a check valve (7); the gas pressurizer (8) is connected with the cutting device (11) through the hydrogen-oxygen mixed stainless steel pipeline, a tank guide chain type hose (9) and a flame cutting machine tank guide chain type hose (10).

4. The apparatus for cutting a plate material by means of a hydrogen-oxygen flame according to claim 3, wherein: The tank guide chain type hose (9) is arranged to move along with a cutting vehicle, and the flame cutting machine tank guide chain type hose (10) is fixedly arranged on the cutting vehicle.

5. The apparatus for cutting a plate material by means of a hydrogen-oxygen flame according to claim 1, wherein: The control system (13) comprises a pressure control module (14), a flow control module (15) and a cutting control module (16), the pressure control module (14) is connected with the gas pressurizer (8), the flow control module (15) is connected with the proportional regulating valve, and the cutting control module (16) is connected with the driving mechanism.

6. The apparatus for cutting a plate material by means of a hydrogen-oxygen flame according to claim 1, wherein: The cutting device comprises cutting guns, cutting gun clamping devices and plate positioning mechanisms, the cutting guns comprise main guns and standby guns, each of the main guns and the standby guns has two, and the main guns and the standby guns are arranged on two sides of a cast blank and are arranged along a walking direction of the cast blank; the standby cutting gun gas source is consistent with the main gun gas source, gas is branched through a three-way mode, and the cutting gun is composed of a cylindrical gun body and a nozzle; the cutting gun clamping device is provided with four U-shaped buckles on one side, and two sets of clamping rings are formed, the two sets of clamping rings control the main guns and the standby guns respectively, and adjusting bolts are arranged on the buckles; The driving mechanism comprises a scale and a centering pointer, the centering pointer is arranged to move, and the moving range of the centering pointer is matched with the position change of the cutting gun; The plate positioning mechanism comprises a laser sensor and an actuator, the laser sensor and the actuator are connected with input ends and output ends of the control system (13) respectively, and a test range of the laser sensor is matched with the position of the cutting head away from the plate.

7. The apparatus for cutting a plate material by means of a hydrogen-oxygen flame according to claim 1, wherein: The exhaust treatment device (12) comprises a filter and an activated carbon adsorption system, and an outlet end of the exhaust treatment device is connected with a steam pocket.

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