[0022] see figure 1 , figure 2 , image 3 , Figure 4 and Figure 5 , a high-efficiency steel-making converter system of the present invention includes a converter 1, an oxygen lance system, a tilting mechanism 2, a ladle 3, a control system 4, an infrared thermal imager 5, an image processing system 6 and a display 7, the oxygen lance system is located in Above the converter 1, the oxygen lance system is composed of a suspension rod 81, a hydraulic control system 82 and an oxygen lance assembly 9. The hydraulic control system 82 is installed on the suspension rod 81, and the oxygen supply system 10 is connected with the oxygen lance assembly 9. The lance assembly 9 is installed on the suspension rod 81 through the lifting device 83. The oxygen lance assembly 9 includes an oxygen inlet manifold 91, a rotating disk 92 and several oxygen lances 93. The rotating disk 92 is installed on the oxygen inlet manifold 91. The oxygen inlet manifold 91 The end is connected with several oxygen lances 93, the hydraulic control system 82 controls the oxygen lances 93, the rotating plate 92 and the lifting device 83, the converter 1 is provided with a support ring 11, and one side of the support ring 11 is in phase with the tilting mechanism 2. connection, the other side of the support ring 11 is installed with an angle encoder 8, the angle encoder 8 is connected with the tilting mechanism 2 and the control system 4, the ladle 3 is located between the converter 1 and the infrared thermal imager 5, and the infrared thermal imager The instrument 5 is connected with the image processing system 6 , the control system 4 is connected with the image processing system 6 , and the image processing system 6 is also connected with a display 7 .
[0023] The oxygen lance 93 is composed of an outer tube 94, a middle tube 95, an inner tube 96 and a nozzle 97. The middle tube 95 is located between the outer tube 94 and the inner tube 96, and the middle tube 95 is communicated with the outer tube 94. The middle tube 95 There is a water inlet 951 on it, and a water outlet 941 on the outer pipe 94. The nozzle 97 is located at the front end of the oxygen lance 93. The nozzle 97 is provided with an air storage chamber 971 and an air outlet 972. The front end of the air storage chamber 971 has a Several jet passages 973, the jet passage 973 is communicated with the air outlet 972, the end of the middle pipe 95 is provided with an oxygen inlet branch pipe 952, the oxygen lance 93 is connected with the oxygen inlet main pipe 91 through the oxygen inlet branch pipe 952, and the middle pipe 95 is installed There is a flange 953, a sealing ring 954 is arranged between the middle pipe 95 and the inner pipe 96, the water inlet 951 is installed below the middle pipe 95, the water outlet 941 is installed above the outer pipe 94, and the back of the middle pipe 95 is installed. The top of the end is communicated with the inside of the outer tube 94, the size of the front end of the air storage chamber 971 is larger than the size of the end of the air storage chamber 971, the front end of the air jet channel 973 adopts an inverted cone structure, the end of the air outlet 972 is a spherical structure, and the air outlet The size of the front end of 972 is smaller than the size of the end of the gas outlet 972, the number of the oxygen lances 93 is 5, one oxygen lance 93 is located in the center of the oxygen inlet main pipe 91, and the remaining four oxygen lances 93 are distributed in a ring array in the oxygen inlet main pipe 91. Around the periphery, the rotating disk 92 is composed of an inner ring 921 and an outer ring 922 , and the inner ring 921 of the rotating disk 92 is fixedly installed with the oxygen inlet manifold 91 through a support plate 923 .
[0024]The support ring 11 is provided with a mounting plate 12, the support ring 11 is fixedly installed on the converter 1 through the mounting plate 12, the upper end of the converter 1 is provided with a tapping port 13, and a sliding plate stopper is installed on the tapping port 13 The slag mechanism 14 also includes a slide rail 31 , the ladle 3 is located below the tapping port 13 , the ladle 3 is located on the slide rail 31 , and a gravity sensor 32 is installed at the bottom of the slide rail 31 , and the gravity sensor 32 is connected with the control system 4 connected, the image processing system 6 includes an image capture card 61 and an image processing module 62, the infrared thermal imager 5 is connected to the image capture card 61, and the image processing module 62 is connected with an analysis and detection module 63 and an image display module 64, the analysis and detection module 63 is connected with the control system 4, the image display module 64 is connected with the display 7, the infrared thermal imager 5 adopts a vanadium oxide crystal detector, and the image acquisition card 61 supports the simultaneous input of 6 signals, The sampling frequency of the image acquisition card 61 is 50-60 MHz.
[0025] The oxygen supply system 10 includes an oxygen generator 101, a first gas storage tank 102, an oxygen compressor 103 and an oxygen station 104. The oxygen generator 101 is connected to the first gas storage tank 102 through a conveying pipe 105. The cabinet 102 is connected with the oxygen compressor 103 through the delivery pipe 105 , the oxygen compressor 103 is provided with a pressure plug 1031 , and the pressure plug 1031 is connected with a pushing cylinder 1032 , and the oxygen compressor 103 is connected with the oxygen station through the delivery pipe 105 104 is connected, the oxygen station 104 is composed of a barrel-shaped tank 1041 and a second gas storage tank 1042, the second gas storage tank 1042 is connected with a total oxygen outlet pipe 106, and the total oxygen outlet pipe 106 is connected with the oxygen inlet main pipe 91, so A pressure reducing valve 1061, a flow regulating valve 1062, a quick shut-off valve 1063 and a manual shut-off valve 1064 are sequentially installed on the total oxygen outlet pipe 106. The first gas storage tank 102 adopts a low-pressure gas storage tank, and the second gas storage tank 1042 A medium-pressure gas storage tank is used. The first gas storage tank 102 and the second gas storage tank 1042 are both provided with a first pressure gauge 107 . The oxygen compressor 103 is provided with a pressure sensor 1033 and the oxygen compressor There is an alarm device 1034, the pressure sensor 1033 is connected to the alarm device 1034, a sealing ring 1035 is sleeved on the pressure plug 1031, a second pressure gauge 1065 is installed at the front end of the pressure reducing valve 1061, the pressure reducing valve 1061 and the flow regulating valve are installed A third pressure gauge 1066, an oxygen flow gauge 1067 and an oxygen temperature gauge 1068 are installed in sequence between 1062, and a fourth pressure gauge 1069 is installed between the flow regulating valve 1062 and the quick shut-off valve 1063. The oxygen compressor 103 The barrel-shaped tank 1041 is connected to the barrel-shaped tank 1041 through the delivery pipe 105 , and the barrel-shaped tank 1041 is connected to the second gas storage tank 1042 through the delivery pipe 105 .
[0026] The working process of the present invention:
[0027] In the working process of the high-efficiency steel-making converter system of the present invention, the angle encoder 8 controls the rotation angle of the tilting mechanism 2. When tapping, the oxygen lance assembly 9 is first taken out from the converter 1 through the lifting device 83, and then the tapping port is opened. The sliding plate slag blocking mechanism 14 on the 13, and then the tilting mechanism 2 is rotated to the set angle value, so that the molten steel flows into the ladle 3. The infrared thermal imager 5 is based on the principle that the emissivity of molten steel and slag is different at the same temperature. The real-time image of the injection flow of the infrared thermal imager 5 is collected and displayed on the display. At the same time, the energy of the injection flow radiation is measured in real time through the analysis and detection module 63, and the percentage of slag in the mainstream is calculated, and the information is sent to the control system 4. When the slag is poured down and exceeds the slag percentage set by the system, the control system 4 transmits the signal to the angle encoder 8, and controls the tilting angle of the tilting mechanism 2 through the angle encoder 8. At the same time, the control system 4 will close the output. The sliding plate slag blocking mechanism 14 of the steel port 13, and the bottom of the slide rail 31 is provided with a gravity sensor 32. When the ladle 3 is filled with molten steel, the control system 4 will drag the ladle 3 away and replace the full with an empty ladle 3. Ladle of molten steel 3.
[0028] During the working process of the oxygen lance assembly 9, the inner ring 921 of the rotating plate 92 is fixedly installed with the oxygen inlet manifold 91 through the support plate 923, and the inner ring 921 drives the oxygen inlet manifold 91 to rotate, and then the oxygen 93 at the end of the oxygen inlet manifold 91 also follows. The rotation enables the oxygen lance 93 to fully blow the converter 1, so as to avoid the phenomenon of uneven blowing in the converter 1; a sealing ring 954 is provided between the middle pipe 95 and the inner pipe 96, and the water inlet 951 is installed in the middle pipe. Below the pipe 95, the water outlet 941 is installed above the outer pipe 94, and the top of the rear end of the middle pipe 95 is communicated with the inside of the outer pipe 94. The inside of the oxygen lance 93 has good sealing performance, and the cooling water enters from the water inlet 951. It can fill the middle pipe 95, and then fill the outer pipe 94 and flow out from the water outlet 941, the cooling effect is good, and the service life of the oxygen lance is improved. Size, the front end of the air jet channel 973 adopts an inverted conical structure, the end of the air outlet 972 is a spherical structure, the front end of the air outlet 972 is smaller than the size of the end of the air outlet 972, and the unique design of the nozzle 97 can make the ejected oxygen have a higher flow rate , and the distribution is wide, and the response is more sufficient.
[0029] In the oxygen supply system 10, the first gas storage tank 102 adopts a low-pressure gas storage tank, and the second gas storage tank 1042 adopts a medium-pressure gas storage tank. The pressure gauge 107, the low-pressure oxygen with a pressure of 0.0392MPa is discharged from the oxygen generator 101 and stored in the low-pressure gas storage tank. The oxygen compressor 3 pressurizes the low-pressure oxygen to 2.45-2.94MPa, and the pressurized oxygen passes through the delivery pipe 105 is stored in a medium pressure gas holder.
[0030] A pressure reducing valve 1061, a flow regulating valve 1062, a quick shut-off valve 1063 and a manual shut-off valve 1064 are installed on the main oxygen outlet pipe 106 in sequence, and the pressurized oxygen passes through the action of the pressure reducing valve 1061 to reduce the pressure to 0.9-1.5MPa It is used for converter work, and the pressure reducing valve 1061 plays the role of stabilizing the working pressure.
[0031] A second pressure gauge 1065 is installed at the front end of the pressure reducing valve 1061, a third pressure measuring gauge 1066, an oxygen flow meter 1067 and an oxygen temperature measuring gauge 1068 are installed between the pressure reducing valve 1061 and the flow regulating valve 1062 in sequence, and the flow regulating valve 1062 A fourth pressure gauge 1069 is installed between the quick shut-off valve 1063, which can provide the converter with oxygen that meets the requirements of process temperature, pressure and flow rate, thereby improving the quality of molten steel.
[0032] The oxygen compressor 103 is provided with a pressure plug 1031, the pressure plug 1031 is connected with a pushing cylinder 1032, the oxygen compressor 103 is provided with a pressure sensor 1033, the oxygen compressor 103 is provided with an alarm device 1034 outside, the pressure sensor 1033 and the alarm device 1034 Connected, the pressure plug 1031 is sleeved with a sealing ring 1035, and the sealing performance of the oxygen compressor 103 is good. When the oxygen pressure in the oxygen compressor 103 exceeds the set value of the pressure sensor 1033, the alarm device 1034 will remind the staff in time. The notification work improves the safety performance of the oxygen supply system.
