Top-blowing spray gun lifting system

Abstract

The utility model provides a top-blowing spray gun lifting system which is used for controlling the suspension height of a top-blowing spray gun in a top-blowing furnace and comprises a control assembly and a lifting assembly electrically connected with the control assembly, the lifting assembly is connected with the top-blowing spray gun, and an infrared high-temperature camera is arranged on the top-blowing furnace. The top of the top blowing furnace is vertically and movably connected with an automatic remote measuring scale, and the infrared high-temperature camera and the automatic remote measuring scale are both electrically connected with a control assembly. The control assembly judges the distance between the top-blowing spray gun and the liquid level of a solution on the basis of in-furnace images shot by the infrared high-temperature camera and in combination with scale marks of an automatic remote detection ruler, and then the suspension height of the top-blowing spray gun is finely adjusted by driving the lifting assembly, so that a manual observation mode is replaced by an automatic mode, and the detection efficiency is improved. The observation error is reduced, the position adjusting efficiency of the top-blowing spray gun is improved, and potential safety hazards caused by the environment in the furnace to operators are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of nonferrous metallurgy, in particular to a top-blowing spray gun lifting system. Background Art

[0002] Oxygen top-blown smelting is one of the commonly used methods for non-ferrous metal smelting. The oxygen top-blown smelting furnace adopts a flat-top circular furnace body lined with refractory bricks. The top-blowing lance is inserted into the furnace from the top of the furnace body to spray air, oxygen and fuel into the melt in the molten pool in the furnace. While spraying air, oxygen and fuel, the molten pool is strongly stirred to provide the necessary kinetic conditions for the reaction.

[0003] During oxygen top-blowing smelting, the top-blowing lance needs to be suspended above the liquid surface of the melt to perform jet operations. In order to fully mix the melt and the gas, the suspension height of the top-blowing lance needs to be adjusted. Currently, the height adjustment is generally achieved by manually observing the suspension position of the top-blowing lance above the liquid surface of the melt. However, relying on the manual observation method, the distance between the top-blowing lance and the liquid surface of the melt depends on the subjective judgment of the observer, which has a large error and low efficiency. In addition, due to the presence of high-temperature melt and toxic fumes in the furnace body, it is easy to cause safety hazards to the observer. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a top-blowing spray gun lifting system, which aims to solve the technical problems in the prior art of manually observing the suspension height of the top-blowing spray gun, resulting in large errors in the observation results, low observation efficiency, and high-temperature melt and toxic flue gas in the furnace body that easily pose a safety hazard to the observer.

[0005] In order to achieve the above purpose, the utility model is implemented through the following technical solutions:

[0006] A top-blowing spray gun lifting system is used to control the suspension height of the top-blowing spray gun in a top-blowing furnace. The top-blowing spray gun lifting system includes a control component and a lifting component electrically connected to the control component. The lifting component is connected to the top-blowing spray gun. The top-blowing furnace is provided with an infrared high-temperature camera for acquiring images inside the furnace. The top of the top-blowing furnace is vertically moved and connected to an automatic remote ruler to detect the distance between the top-blowing spray gun and the liquid surface of the melt inside the top-blowing furnace through the infrared high-temperature camera and the automatic remote ruler. The infrared high-temperature camera and the automatic remote ruler are both electrically connected to the control component.

[0007] Compared with the prior art, the beneficial effect of the utility model lies in that: when top-blowing smelting starts, the control component controls the lifting component to drive the top-blowing lance to enter the top-blowing furnace and suspend at a calibrated height. At this time, the control component drives the automatic remote measuring ruler to move vertically and abut the bottom of the top-blowing furnace. The infrared high-temperature camera captures the image inside the top-blowing furnace. The control component determines whether the distance between the top-blowing lance and the liquid surface of the melt reaches the optimal distance based on the image inside the furnace and the scale markings of the automatic remote detection ruler. Then, the lifting component can be driven to fine-tune the suspension height of the top-blowing lance to complete the preparation for top-blowing smelting. The suspension height of the top-blowing lance is adjusted by automation instead of manual observation, which reduces observation errors, improves the position adjustment efficiency of the top-blowing lance, and avoids the safety hazards of the furnace environment to operators.

[0008] Furthermore, the side wall of the top-blown furnace is connected to the infrared high-temperature camera, and a through hole communicating with the interior of the top-blown furnace is provided on the side wall of the top-blown furnace, and the through hole corresponds to the position of the infrared high-temperature camera.

[0009] Furthermore, one end of the top-blowing lance facing away from the top-blowing furnace is connected to an air supply pipe, and a flow meter and a pressure transmitter are provided on the air supply pipe.

[0010] Furthermore, a sound spectrum monitoring component is arranged on the top of the top-blown furnace, and the sound spectrum monitoring component includes an audio sampler and an audio analyzer electrically connected to the audio sampler, the audio analyzer is electrically connected to the control component, and the audio sampler is adjacent to the top-blowing spray gun.

[0011] Furthermore, a spray gun weighing assembly is arranged between the lifting assembly and the top-blowing spray gun, and the spray gun weighing assembly is used to detect the weight of the top-blowing spray gun.

[0012] Furthermore, the spray gun weighing component is a weighing sensor or a tension sensor.

[0013] Furthermore, a flue connected to the interior of the top-blown furnace is arranged at the top of the top-blown furnace, a flue gas sampler is arranged in the flue, the flue gas sampler is electrically connected to a gas content analyzer, and the gas content analyzer is electrically connected to the control component.

[0014] Furthermore, the control component includes a main control unit, a host computer and an algorithm workstation, and the main control unit is connected to the algorithm workstation via the host computer communication. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the top-blowing spray gun lifting system in the embodiment of the utility model;

[0016] Description of main component symbols:

[0017] 10. Top-blowing spray gun; 20. Top-blowing furnace; 310. Control unit; 320. Host computer; 330. Algorithm workstation; 40. Lifting assembly; 50. Infrared high-temperature camera; 60. Automatic remote measuring gauge; 70. Air supply pipe; 710. Flow meter; 720. Pressure transmitter; 810. Audio sampler; 820. Audio analyzer; 90. Spray gun weighing assembly; 100. Flue; 101. Flue gas sampler; 102. Gas content analyzer.

[0018] The following specific implementation manner will further illustrate the present utility model in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0019] In order to facilitate the understanding of the utility model, the utility model will be described more fully below with reference to the relevant drawings. Several embodiments of the utility model are given in the drawings. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0020] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0022] See also Figure 1The top-blowing spray gun lifting system in the embodiment of the utility model is used to control the suspension height of the top-blowing spray gun 10 in the top-blowing furnace 20. The top-blowing spray gun lifting system includes a control component and a lifting component 40 electrically connected to the control component. The lifting component 40 is connected to the top-blowing spray gun 10. It can be understood that the lifting component 40 is fixed on an external facility. The lifting component 40 is used to drive the top-blowing spray gun 10 to move up or down axially, thereby adjusting the suspension height of the top-blowing spray gun 10. In this embodiment, the lifting component 40 includes a lifting motor, a stroke encoder and a rotating handle. The lifting motor is electrically connected to the rotating handle to drive the rotating handle to rotate axially. A pull rope is connected to the outer shell of the rotating handle. The end of the pull rope away from the rotating handle is connected to the top-blowing spray gun 10. The lifting motor drives the rotating handle to rotate based on the first preset value in the stroke encoder, thereby controlling the moving distance of the pull rope to complete the suspension height adjustment of the top-blowing spray gun 10. In some embodiments, the lifting assembly 40 includes a drive motor, a distance encoder and a lifting rod, one end of the lifting rod is connected to the drive motor, and the other end of the lifting rod is connected to the top-blowing spray gun 10, and the drive motor is used to drive the lifting rod to extend and retract based on the second preset value in the distance encoder to complete the suspension height adjustment of the top-blowing spray gun 10.

[0023] The top-blown furnace 20 is provided with an infrared high-temperature camera 50 for acquiring images inside the furnace. Specifically, the side wall of the top-blown furnace 20 is connected to the infrared high-temperature camera 50. The side wall of the top-blown furnace 20 is provided with a through hole connected to the interior of the top-blown furnace 20. The through hole corresponds to the position of the infrared high-temperature camera 50. The infrared high-temperature camera 50 can take images inside the top-blown furnace 20 through the through hole. The top of the top-blown furnace 20 is vertically movable and connected to an automatic remote measuring ruler 60. It can be understood that the automatic remote measuring ruler is provided with a number of scale marks evenly spaced from top to bottom.

[0024] The infrared high temperature camera 50 and the automatic remote measuring ruler 60 are electrically connected to the control component, and the distance between the top-blowing lance 10 and the liquid surface of the melt inside the top-blowing furnace 20 is detected by the infrared high temperature camera 50 and the automatic remote measuring ruler 60, thereby completing the precise adjustment of the suspension position of the top-blowing lance 10. In this embodiment, the melt is copper water. When the top-blowing smelting starts, the control component controls the lifting component 40 to drive the top-blowing lance 10 into the top-blowing furnace 20 and suspend it at a calibrated height. By setting the calibrated height, the top-blowing lance 10 can be prevented from being directly immersed in the melt inside the top-blowing furnace 20. At this time, the control component drives the automatic remote measuring ruler 60 to move vertically and abut against the bottom of the top-blowing furnace 20, and captures the image inside the top-blowing furnace 20 through the infrared high-temperature camera 50. The control component determines whether the distance between the top-blowing lance 10 and the liquid surface of the melt has reached the optimal distance based on the image inside the furnace and in combination with the scale markings of the automatic remote detection ruler, and then drives the lifting component 40 to fine-tune the suspension height of the top-blowing lance 10 to complete the top-blowing smelting preparation work, and replaces manual observation with an automated method to adjust the suspension height of the top-blowing lance 10, thereby reducing observation errors, improving the position adjustment efficiency of the top-blowing lance 10, and avoiding safety hazards to operators caused by the furnace environment.

[0025] The end of the top-blowing lance 10 facing away from the top-blowing furnace 20 is connected to the air supply pipe 70, and the air supply pipe 70 is used to provide the top-blowing lance 10 with gas for blowing. The air supply pipe 70 is provided with a flow meter 710 and a pressure transmitter 720, and the flow meter 710 is used to detect the air flow rate of the air supply pipe 70, and the pressure transmitter 720 is used to detect the pressure inside the air supply pipe 70. It can be understood that the flow meter 710 and the pressure transmitter 720 are both electrically connected to the control component. When the air flow rate of the air supply pipe 70 is less than the first threshold value and / or the air supply pipe When the pressure in the pipe 70 is greater than the second threshold value, it can be determined that the top-blowing lance 10 is affected by splashing and may be blocked. At the same time, under the condition that the flow rate remains unchanged, the relationship between the flow rate and the pressure can be used to simulate the nonlinear relationship between the pressure and the height of the top-blowing lance 10 from the liquid surface of the melt. By judging whether the position of the top-blowing lance 10 is suitable through the control component, the height of the lance is automatically fine-tuned. The control component drives the lifting component 40 to adjust the distance between the top-blowing lance 10 and the liquid surface of the melt to achieve a better top-blowing smelting effect.

[0026] A sound spectrum monitoring component is arranged on the top of the top-blowing furnace 20, and the sound spectrum monitoring component comprises an audio sampler 810 and an audio analyzer 820 electrically connected to the audio sampler 810, the audio analyzer 820 is electrically connected to the control component, the audio sampler 810 is adjacent to the top-blowing lance 10, when the top-blowing lance 10 is performing blowing smelting, the audio sampler 810 collects the working audio of the top-blowing lance 10, and transmits the working audio to the audio analyzer 820, and the spectrum and amplitude of the working audio of the audio analyzer 820, and then transmits the analysis result to the control component, the control component determines whether the air supply response of the top-blowing lance 10 is normal based on the analysis result, and then controls the lifting component 40 based on the judgment result, so as to drive the top-blowing lance 10 to move, adjust the suspension height of the top-blowing lance 10, and further improve the effect of top-blowing smelting.

[0027] A spray gun weighing assembly 90 is provided on the lifting assembly 40, and the spray gun weighing assembly 90 is used to detect the weight of the top-blowing spray gun 10, and the spray gun weighing assembly 90 is electrically connected to the control assembly. Preferably, the spray gun weighing assembly 90 is a weighing sensor or a tension sensor. In the present embodiment, the spray gun weighing assembly 90 is a tension sensor. By providing the spray gun weighing assembly 90, the weight of the top-blowing spray gun 10 can be obtained in real time during the working process of the top-blowing spray gun 10, and the degree of slag hanging of the top-blowing spray gun 10 can be determined by judging the increase in its weight. The control assembly controls the lifting assembly 40 based on the degree of slag hanging to complete the adjustment of the suspension height of the top-blowing spray gun 10 to ensure that the production requirements are met.

[0028] A flue 100 connected to the interior of the top-blown furnace 20 is arranged at the top of the top-blown furnace 20, and the flue 100 is used to discharge the gas generated in the top-blown furnace 20 during the reaction process. A flue gas sampler 101 is arranged in the flue 101, and the flue gas sampler 101 is electrically connected to a gas content analyzer 102, and the gas content analyzer 102 is electrically connected to the control component, and the gas content analyzer 102 is used to detect the concentration of oxygen / sulfur dioxide in the discharged gas. The control component can judge the reaction situation in the top-blown furnace 20 through the analysis result of the gas content analyzer 102, and then determine whether it is necessary to adjust the distance between the top-blowing lance 10 and the liquid surface of the solution.

[0029] The control component includes a control unit 310, a host computer 320 and an algorithm workstation 330. The control unit 310 is connected to the algorithm workstation 330 through the host computer 320. The detection results of the above-mentioned detection elements obtained by the control component are transmitted to the algorithm workstation 330 through the host computer 320. After completing the result judgment, the algorithm workstation 330 transmits the control instruction to the control unit 310. The control unit 310 dynamically controls the corresponding components based on the control instruction.

[0030] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0031] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A top-blowing lance lifting system, used to control the suspension height of the top-blowing lance in a top-blowing furnace, characterized in that: The top-blowing spray gun lifting system includes a control component and a lifting component electrically connected to the control component, the lifting component is connected to the top-blowing spray gun, the top-blowing furnace is provided with an infrared high-temperature camera for acquiring images inside the furnace, the top of the top-blowing furnace is vertically moved and connected to an automatic remote ruler, so as to detect the distance between the top-blowing spray gun and the liquid surface of the melt inside the top-blowing furnace through the infrared high-temperature camera and the automatic remote ruler, and the infrared high-temperature camera and the automatic remote ruler are both electrically connected to the control component.

2. The top blowing spray gun lifting system according to claim 1 is characterized in that: The side wall of the top-blown furnace is connected to the infrared high-temperature camera, and a through hole communicating with the interior of the top-blown furnace is provided on the side wall of the top-blown furnace, and the through hole corresponds to the position of the infrared high-temperature camera.

3. The top blowing spray gun lifting system according to claim 1, characterized in that: The end of the top-blowing lance facing away from the top-blowing furnace is connected to an air supply pipe, and a flow meter and a pressure transmitter are arranged on the air supply pipe.

4. The top blowing spray gun lifting system according to claim 1, characterized in that: A sound spectrum monitoring component is arranged on the top of the top-blown furnace. The sound spectrum monitoring component includes an audio sampler and an audio analyzer electrically connected to the audio sampler. The audio analyzer is electrically connected to the control component. The audio sampler is adjacent to the top-blowing spray gun.

5. The top blowing spray gun lifting system according to claim 1, characterized in that: A spray gun weighing assembly is arranged on the lifting assembly, and the spray gun weighing assembly is used to detect the weight of the top-blowing spray gun.

6. The top-blowing spray gun lifting system according to claim 5, characterized in that: The spray gun weighing component is a weighing sensor or a tension sensor.

7. The top blowing spray gun lifting system according to claim 1, characterized in that: A flue connected to the interior of the top-blown furnace is arranged at the top of the top-blown furnace, a flue gas sampler is arranged in the flue, the flue gas sampler is electrically connected to a gas content analyzer, and the gas content analyzer is electrically connected to the control component.

8. The top blowing spray gun lifting system according to claim 1, characterized in that: The control component includes a main control unit, a host computer and an algorithm workstation, and the main control unit is connected to the algorithm workstation via the host computer communication.

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