Converter alloy baking equipment and converter alloy baking accident ignition device thereof

Abstract

The utility model discloses a converter alloy baking accident ignition device which comprises a coal gas channel, the first end of the coal gas channel communicates with a coal gas inlet, the second end of the coal gas channel is connected to an accident ignition accompanying burner located in an alloy discharging valve, and an accident ignition control valve set used for controlling on-off of coal gas is arranged on the coal gas channel. The accident ignition accompanying burner is located below the in-furnace burner, and the accident ignition accompanying burner is used for being ignited when the accident ignition control valve set is in the open state so as to ignite the in-furnace burner. According to the converter alloy baking equipment and the converter alloy baking accident ignition device thereof, in the converter steelmaking process, when the automatic ignition device breaks down, ignition operation can be carried out instead of the automatic ignition device, so that it is guaranteed that the alloy baking equipment continuously and stably operates, and baking is not interrupted; therefore, the labor intensity of equipment maintenance personnel and post operation personnel is reduced, the production cost is reduced, the converter steelmaking efficiency is improved, and the safety of ignition operation can also be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to converter steelmaking equipment technical field more specifically, relate to a converter alloy baking equipment and its converter alloy baking accident ignition device. BACKGROUND

[0002] In the process of converter steelmaking, need heating to alloy through alloy baking equipment, to guarantee alloy preheating in advance, to improve the efficiency of converter steelmaking. However, the existing alloy baking equipment has the following problems: the automatic ignition device it adopts is to use high pressure bag electronic spark to ignite, and it often fails, and maintenance personnel need to handle, at this time, it will cause the interruption of alloy baking process, delay the time of alloy baking, thereby affecting the efficiency of converter steelmaking, cause certain economic loss, and the furnace is easy to produce explosive sound, there is big security risk. UTILITY MODEL CONTENTS

[0003] To solve the above technical problem, the utility model provides a kind of converter alloy baking equipment and its converter alloy baking accident ignition device, in the process of converter steelmaking, can replace it to ignite operation when automatic ignition device fails, to ensure that alloy baking equipment continuously and stably operates to make baking uninterrupted, to reduce the labor intensity of equipment maintenance personnel and post operator, reduce production cost, improve the efficiency of converter steelmaking, also can improve the security of ignition operation.

[0004] The utility model provides a kind of converter alloy baking accident ignition device, including gas passage, the first end of gas passage is connected to gas inlet, and the second end is connected to the accident ignition companion burner in alloy blanking valve, and the accident ignition control valve group for controlling gas on-off is provided on gas passage, the accident ignition companion burner is located below furnace burner, and the accident ignition companion burner is used to be ignited to ignite furnace burner when accident ignition control valve group is in the open state.

[0005] Preferably, in the above-mentioned converter alloy baking accident ignition device, the accident ignition control valve group includes a ball valve closest to the gas inlet.

[0006] Preferably, in the above-mentioned converter alloy baking accident ignition device, the accident ignition control valve group further includes a check valve located on the side of the ball valve away from the gas inlet.

[0007] Preferably, in the above-mentioned converter alloy baking accident ignition device, the gas passage includes a heat-resistant hose located between the check valve and the accident ignition companion burner.

[0008] Preferably, in the above converter alloy baking emergency ignition device, the main body of the gas passage is a carbon seamless steel pipe with a diameter of 15-20 mm.

[0009] Preferably, in the above converter alloy baking emergency ignition device, the gas inlet is located between the spectacle valve and the pneumatic cut-off valve on the automatic ignition device gas pipeline.

[0010] Preferably, in the above converter alloy baking emergency ignition device, a manual gate valve is further arranged on the automatic ignition device gas pipeline and connected to the end of the spectacle valve away from the pneumatic cut-off valve, and an electric regulating valve is further arranged on the automatic ignition device gas pipeline and connected to the end of the pneumatic cut-off valve away from the spectacle valve.

[0011] Preferably, in the above converter alloy baking emergency ignition device, the emergency ignition pilot burner is a cobalt-based hard alloy pilot burner.

[0012] Preferably, in the above converter alloy baking emergency ignition device, the emergency ignition pilot burner is threadedly connected to the heat-resistant hose.

[0013] The converter alloy baking equipment provided by the present application has the same advantages.

[0014] As can be seen from the above technical solution, the above converter alloy baking emergency ignition device provided by the present application has the following advantages: the first end of the gas passage is communicated to the gas inlet, and the second end is connected to the emergency ignition pilot burner located in the alloy discharge valve, so that the gas can be introduced into the position where the emergency ignition pilot burner is located for ignition; the emergency ignition control valve group is arranged on the gas passage for controlling the on-off of the gas, so that the gas passage can be opened when emergency ignition is needed, and the gas passage can be closed when emergency ignition is not needed; the emergency ignition pilot burner is located below the in-furnace burner, and is used to be ignited to ignite the in-furnace burner when the emergency ignition control valve group is in an open state, that is, the emergency ignition pilot burner through which the gas is introduced can be ignited first, and then the in-furnace burner above the emergency ignition pilot burner is ignited by using the emergency ignition pilot burner, so that the ignition of the in-furnace burner is realized without high-pressure package electronic ignition, thereby it can be seen that in the process of converter steelmaking, the emergency ignition device can replace the automatic ignition device to perform ignition operation when the automatic ignition device fails, so as to ensure that the alloy baking equipment continuously and stably operates to make the baking uninterrupted, thereby reducing the labor intensity of equipment maintenance personnel and post operators, reducing production cost, improving the efficiency of converter steelmaking, and improving the safety of ignition operation. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of the provided drawings.

[0016] Figure 1 The embodiment of the converter alloy baking accident ignition device provided by the present application is shown in the schematic diagram. DETAILED DESCRIPTION

[0017] The core of the present application is to provide a converter alloy baking equipment and its converter alloy baking accident ignition device. In the process of converter steelmaking, the automatic ignition device can be replaced to perform ignition operation when it fails, so as to ensure the continuous and stable operation of the alloy baking equipment, so that the baking is not interrupted, thereby reducing the labor intensity of equipment maintenance personnel and post operators, reducing production cost, improving the efficiency of converter steelmaking, and improving the safety of ignition operation.

[0018] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0019] The embodiment of the converter alloy baking accident ignition device provided by the present application is shown in the schematic diagram. Figure 1 as shown, Figure 1The embodiment of the converter alloy baking accident ignition device provided by the utility model has the advantages that the converter alloy baking accident ignition device can include a gas passage 1, and it should be noted that the gas passage 1 is used for introducing gas into the device for combustion, the first end of the gas passage 1 is communicated to a gas inlet 2, and the second end is connected to an accident ignition pilot burner 4 located in an alloy discharge valve 3, and it should be noted that the accident ignition pilot burner 4 can be ignited by external fire in the case of gas input, thereby being capable of being used for igniting an in-furnace burner, and the gas passage 1 is provided with an accident ignition control valve group 5 used for controlling the on-off of gas, when the accident ignition pilot burner 4 needs to be ignited, the accident ignition control valve group 5 can be opened to make it connected, and after the in-furnace burner 6 is ignited, gas does not need to be input in the gas passage 1, thereby the accident ignition control valve group 5 can be closed to avoid gas passing, the accident ignition pilot burner 4 is located below the in-furnace burner 6, so that after the accident ignition pilot burner 4 is ignited, the in-furnace burner 6 above it can be ignited by using the generated flame, the distance between the two needs to be guaranteed within the flame range in which the in-furnace burner can be ignited, and the accident ignition pilot burner 4 is not only limited to being arranged directly below the in-furnace burner 6, but also can exist some deviation, and the distance can be preferably 200mm to 300mm, and the accident ignition pilot burner 4 is used for being ignited to ignite the in-furnace burner 6 when the accident ignition control valve group 5 is in an open state, and it can be seen that in the case of high-pressure bag electronic ignition failure, the in-furnace burner can still be ignited, then the gas valve corresponding to the in-furnace burner can be opened, and the accident ignition control valve group 5 is closed, because gas does not need to be input for the accident ignition pilot burner 4 at this time.

[0020] From the above technical scheme can be seen, the utility model provides above converter alloy roasting accident ignition device's embodiment, because the first end of the gas passage is communicated to the gas inlet, and the second end is connected to the accident ignition pilot burner located in the alloy blanking valve, so that the gas can be introduced into the position where the accident ignition pilot burner is located for ignition, and the accident ignition control valve group for controlling the on-off of the gas is arranged on the gas passage, so that the gas passage can be opened when accident ignition is needed, and the gas passage can be closed when accident ignition is not needed. The accident ignition pilot burner is located below the furnace burner. The accident ignition pilot burner is used to be ignited when the accident ignition control valve group is in the open state to ignite the furnace burner. That is, the accident ignition pilot burner through which the gas passes can be ignited first, and then the furnace burner above the accident ignition pilot burner is ignited by using the accident ignition pilot burner. In this way, the ignition of the furnace burner is realized without high-pressure bag electronic ignition, so that in the process of converter steelmaking, the converter alloy roasting accident ignition device can replace the automatic ignition device to perform ignition operation when the automatic ignition device fails, to ensure that the alloy roasting equipment operates continuously and stably to make the roasting uninterrupted, thereby reducing the labor intensity of equipment maintenance personnel and post operators, reducing production cost, improving the efficiency of converter steelmaking, and also improving the safety of ignition operation.

[0021] In one specific embodiment of the above-mentioned converter alloy roasting accident ignition device, with reference to Figure 1 The accident ignition control valve group 5 can include a ball valve 51 closest to the gas inlet 2, which is a rotary valve. The ball valve has a ball body with a circular hole or channel. The ball body rotates around the center line of the valve body to open and close the valve. When the handle is rotated by 90°, the ball body rotates, and when the circular hole is aligned with the pipeline, the valve is fully open, and when the hole is perpendicular to the pipeline, the valve is fully closed. In this way, the on-off of the gas can be manually controlled. This method is more simple and direct, easy to operate, small in size and light in weight, easy to maintain, easy to disassemble and replace, and the like. In addition, the accident ignition control valve group 5 can also include a check valve 52 located on the side of the ball valve 51 away from the gas inlet 2. The check valve is an automatic valve. Its main function is to prevent the backflow of fluid medium and ensure one-way flow of fluid. The check valve realizes one-way flow by automatic opening and closing of the valve clack (or valve core). When the fluid flows from the inlet to the outlet, the valve clack is pushed open by the fluid pressure, and the fluid flows smoothly. When the fluid tries to flow backward, the valve clack is automatically closed under the action of fluid pressure or its own gravity, preventing the fluid from flowing backward. In this way, the safety and stability of the entire device can be ensured.

[0022] With reference to Figure 1In another specific embodiment of the above converter alloy roasting accident ignition device, a heat-resistant hose 7 can be further included between the check valve 52 and the accident ignition pilot burner 4 on the gas passage 1. It should be noted that the heat-resistant hose 7 can be made of heat-resistant rubber material. The use of such a soft material can ensure that the gas passage 1 can be directly inserted into the alloy discharge valve 3, making it easier to put in and take out, and can maintain stable performance in high-temperature environments, withstand long-term high temperature and pressure, and have good flexibility and wear resistance. This not only ensures the safe operation of the entire device, but also improves work efficiency. On this basis, the threaded connection between the accident ignition pilot burner 4 and the heat-resistant hose 7 can be preferred. This threaded connection is more reliable and stable, and is not prone to gas leakage. Specifically, threads are machined at both ends of the heat-resistant hose 7 and the interface of the accident ignition pilot burner 4, and then a threaded connection is used to tightly connect the two. This method has the advantages of easy installation and removal, and good sealing. Of course, other connection methods can also be selected as needed, for example, flange connection can be used in cases where high sealing and stability are required. By installing a flange at the accident ignition pilot burner 4 and the heat-resistant hose 7, and using bolts to fix the flange, connection is achieved. This connection method can effectively prevent high-temperature gas leakage. Quick connector connection can also be used. This method is efficient and reliable, and is suitable for situations that require frequent disassembly. By installing a quick connector at the accident ignition pilot burner 4 and the heat-resistant hose 7, connection or disassembly can be completed with simple operation. This connection method has the advantages of quick installation and good sealing. Of course, other methods such as clamp connection can also be selected, which are not limited here.

[0023] In another specific embodiment of the above converter alloy roasting accident ignition device, the main body of the above gas passage 1 can be preferably a carbon seamless steel pipe with a diameter of 15-20 mm. This diameter is chosen because the ignition does not require a large flow of gas, which can be a safety hazard. The above carbon seamless steel pipe is a seamless pipe made of carbon steel, mainly composed of iron and carbon elements, and usually contains a small amount of manganese, silicon, sulfur, phosphorus and other elements. The steel ingot or solid round steel is first perforated to form a blank pipe, and then processed through hot rolling, cold rolling or cold drawing. The surface of this steel pipe has no joints, has good mechanical properties and sealing performance. Of course, other materials of the gas passage can also be selected according to actual needs, which are not limited here.

[0024] And the above-mentioned coal gas inlet 2 is preferably located between the spectacle valve 81 and the pneumatic cut-off valve 82 on the automatic ignition device gas pipeline 8, it should be noted that according to the gas use specification, the user use point must be installed with the corresponding cut-off device, here the spectacle valve is selected, which realizes the circulation or cut-off of the gas medium in the pipeline by rotating or moving the gate, its structure usually includes left valve body, right valve body, gate, sealing ring, lever, air cylinder and other components, when working, through manual, electric, pneumatic or hydraulic driving mode, the gate moves or rotates in the valve body, so as to realize the circulation or cut-off of the medium, when closed, the gate closely contacts with the sealing ring, ensuring the sealing, its advantages are light weight, small size, easy to install and maintain, quick action, flexible opening and closing, zero leakage in closed state, simple sealing ring replacement, easy to disassemble and assemble, the spectacle valve plays an important role in the gas medium management system due to its reliable cut-off performance and flexible operation mode, the above-mentioned pneumatic cut-off valve is used to quickly cut off the gas when the equipment fails, avoiding causing safety accidents, it is an automatic valve device using compressed air as power source to control the opening and closing of the valve, realizing the cut-off or connection of the fluid medium in the pipeline, the opening and closing of the valve is realized by driving the valve core action through the pneumatic actuator, when the control system sends a signal, the compressed air enters the cylinder of the pneumatic actuator, the gas pressure acts on the piston, generating a pushing force to overcome the spring force or other resistance, pushing the piston to move. The movement of the piston is transmitted to the valve stem through the push rod, driving the valve core away from the valve seat, the valve is opened, and the fluid can pass through; when the signal changes, the compressed air is discharged from the cylinder, the spring force or other reset device makes the valve core return to the valve seat, the valve is closed, it has the advantages of fast response, safety and reliability, convenient control, of course, other types of valves can also be selected according to actual needs, which is not limited here.

[0025] Further, the automatic ignition device gas pipeline 8 can also be provided with a manual gate valve 83 connected with the end of the mirror valve 81 away from the pneumatic cut-off valve 82, and an electric regulating valve 84 connected with the end of the pneumatic cut-off valve 82 away from the mirror valve 81. The manual gate valve is provided for use in subsequent valve failure maintenance. It is a valve controlled by manual operation to open and close the valve. It is widely used in pipeline systems of various fluid media to cut off or connect the medium flow. By rotating the hand wheel or handle, the valve rod moves up and down to drive the gate to rise or fall in the valve body to realize the opening or closing of the valve. When the gate closely contacts the valve seat, the medium is completely cut off. When the gate leaves the valve seat, the medium can flow freely. It has good sealing performance, simple operation, wide application range, simple structure and good pressure resistance. The above-mentioned electric regulating valve is used to adjust the size of the flame in the furnace. It is composed of an electric actuator and a valve body. It is an automatic control valve. Its working principle is that the motor (such as an alternating current asynchronous motor, a permanent magnet synchronous motor, a stepping motor, etc.) is used as a driving source to convert the rotary motion of the motor into the linear motion of the valve rod or valve core through a speed reduction mechanism, so as to realize the opening and closing or adjustment of the valve. The control signal of the electric regulating valve is usually a standard analog signal (such as a 4-20mA current signal or a 0-10V voltage signal). The control system adjusts the rotation angle or stroke of the motor by changing the size of the input signal, thereby accurately controlling the opening degree of the valve. It is widely used in occasions requiring continuous adjustment or accurate control, especially in process control of automatic adjustment of fluid parameters (such as flow, pressure, temperature, etc.). Of course, other types of valves can also be selected according to actual needs, which are not limited here.

[0026] In a preferred embodiment of the above-mentioned converter alloy baking accident ignition device, the above-mentioned accident ignition burner 4 can be preferably a cobalt-based hard alloy burner. It is a special burner used in high-temperature and corrosive environments. Cobalt-based hard alloy (such as UMCo-50) has excellent high-temperature resistance, corrosion resistance and wear resistance, and is particularly suitable for use in harsh environments such as high temperature, sulfur and oxidizing atmosphere. It has high temperature resistance and corrosion resistance, and also has wear resistance and thermal shock resistance. Of course, other materials can also be selected according to actual needs, which are not limited here.

[0027] In an embodiment of the converter alloy baking equipment provided by the utility model, since the converter alloy baking accident ignition device as claimed in any one of the above embodiments is included, in the process of converter steelmaking, the above-mentioned converter alloy baking accident ignition device can be used to replace the automatic ignition device to perform ignition operation when the automatic ignition device fails, so as to ensure that the alloy baking equipment continuously and stably operates to make the baking uninterrupted, thereby reducing the labor intensity of equipment maintenance personnel and post operators, reducing production cost, improving the efficiency of converter steelmaking, and also improving the safety of ignition operation.

[0028] When the automatic ignition fails, the pneumatic cut-off valve 82 is closed, the ball valve 51 on the gas passage 1 is opened, the emergency ignition auxiliary burner 4 is put into the alloy feeding valve 3, the pneumatic cut-off valve 82 is opened, the in-furnace burner 6 is ignited, the ball valve 51 is closed, and the emergency ignition auxiliary burner 4 is taken out, so that the stable operation of the alloy baking equipment is ensured, the heating is uninterrupted, and thus the efficiency of the converter steelmaking is improved.

[0029] As can be seen from the above, when the automatic ignition device of the alloy baking fails in the process of the converter steelmaking, the emergency ignition device can be used for ignition to continue heating, the phenomenon of interruption of alloy heating is avoided, the labor intensity of the equipment maintenance personnel and the post operators is reduced, the production cost is reduced, the efficiency of the converter steelmaking is improved, and good economic and environmental benefits are obtained.

[0030] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will accord with the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A converter alloy bake-off incident ignition device, characterized by, The gas passage has a first end connected to a gas inlet and a second end connected to an emergency ignition pilot burner located in an alloy tapping valve, and an emergency ignition control valve group is arranged on the gas passage for controlling the on-off of the gas, the emergency ignition pilot burner is located below the furnace burner, and the emergency ignition pilot burner is used to be ignited to ignite the furnace burner when the emergency ignition control valve group is in an open state.

2. The converter alloy toast fire ignition device of claim 1, wherein, The emergency ignition control valve group includes a ball valve closest to the gas inlet.

3. The converter alloy toast fire ignition device of claim 2, wherein, The emergency ignition control valve group further includes a check valve located on the side of the ball valve away from the gas inlet.

4. The converter alloy toast fire ignition device of claim 3, wherein, The gas passage includes a heat-resistant hose located between the check valve and the emergency ignition pilot burner.

5. The converter alloy toast fire ignition device of claim 4, wherein, The main body of the gas passage is a carbon seamless steel pipe with a diameter of 15-20 mm.

6. The oven roast emergency ignition device of any one of claims 1-5, wherein, The gas inlet is located between a spectacle valve and a pneumatic cut-off valve on an automatic ignition device gas pipeline.

7. The converter alloy toast fire ignition device of claim 6, wherein, The automatic ignition device gas pipeline is further provided with a manual gate valve connected to the end of the spectacle valve away from the pneumatic cut-off valve, and an electric regulating valve connected to the end of the pneumatic cut-off valve away from the spectacle valve.

8. The converter alloy toast fire ignition device of claim 4, wherein, The emergency ignition pilot burner is a cobalt-based hard alloy pilot burner.

9. The converter alloy bake-off ignition device of claim 4, wherein, The emergency ignition pilot burner is threadedly connected to the heat-resistant hose.

10. A converter alloy roasting apparatus characterized by, A converter alloy baking emergency ignition device comprising the converter alloy baking emergency ignition device according to any one of claims 1-9.

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