A converter laser thickness gauge

Abstract

The present invention provides a converter laser thickness gauge, comprising: a laser ranging module and a data processing module; the laser ranging module is used to emit laser to the inner wall of the converter, and the laser completely covers the inner wall of the converter; the laser ranging module is also used to receive the returned laser and obtain the angle information and distance data of the returned laser; the data processing module is used to obtain the thickness data of the inner wall of the converter according to the angle information and distance data. The laser ranging module emits laser, and the distance and angle of different angles and different positions of the inner wall of the converter are measured at the same time. The data processing algorithm is used for real-time three-dimensional modeling to obtain the complete distance and angle data of each point of the lining. The algorithm processes and compares the original data of each point of the lining to obtain accurate information on the thickness of the lining, thereby guiding the on-site slag splashing and furnace protection of the converter to achieve the purpose of extending the service life of the converter and saving energy and reducing emissions.

Description

Technical Field

[0001] The invention relates to the field of industrial technology, and in particular to a converter laser thickness gauge. Background Art

[0002] During the oxygen blowing smelting process of the converter, the lining is in long-term contact with high-temperature molten iron, slag and furnace gas, resulting in local erosion; at the same time, the lining will also be affected by operations such as adding scrap steel, pouring slag and tapping, resulting in local damage. When the current thickness is lower than the safe value, major safety accidents such as steel penetration are prone to occur. Accurately detecting the thickness of the converter lining at various locations is important to reduce the waste caused by transition repairs, keep the converter lining in the best profile, thereby extending its furnace life and reducing the number of lining rebuilding and cold repairs. At the same time, accurate detection of the thickness of the converter lining at various locations can predict the converter molten pool level and tapping angle, optimize the oxygen lance position and tapping angle, and then guide converter steelmaking.

[0003] Laser measurement of converter lining thickness has the advantages of non-contact, fast, high accuracy and strong anti-interference, and is widely used in the field of converter lining thickness measurement technology. However, existing laser measurement equipment for converter lining generally requires manual operation and positioning, and the measurement time is long and the accuracy is low. Therefore, a laser thickness gauge that can achieve long-distance, automatic positioning, fast and accurate measurement is of great significance to the development of the smelting industry.

[0004] Therefore, how to effectively realize laser ranging of converters has become a problem that needs to be solved urgently in the industry. Summary of the invention

[0005] The invention provides a converter laser thickness gauge, which is used to solve the problem in the prior art that converter thickness measurement cannot be accurately achieved for a long time.

[0006] The present invention provides a converter laser thickness gauge, comprising: a laser distance measuring module and a data processing module;

[0007] The laser ranging module is used to emit laser to the inner wall of the converter, and the laser completely covers the inner wall of the converter;

[0008] The laser ranging module is also used to receive the returned laser and obtain the angle information and distance data of the returned laser;

[0009] The data processing module is used to obtain the converter inner wall thickness data according to the angle information and distance data.

[0010] According to a converter laser thickness gauge provided by the present invention, the laser distance measuring module comprises: one or more laser distance measuring transmitters.

[0011] According to a converter laser thickness gauge provided by the present invention, when the laser distance measuring module includes a plurality of laser distance measuring transmitters, the plurality of laser distance measuring transmitters simultaneously emit lasers toward the inner wall of the converter;

[0012] The multiple laser rangefinder transmitters are also used to simultaneously receive the return lasers of each laser rangefinder transmitter, and the data processing module simultaneously processes the angle information and distance information of the return lasers of each laser rangefinder transmitter.

[0013] According to a converter laser thickness gauge provided by the present invention, the laser distance measuring transmitter comprises:

[0014] A laser ranging sensor, a current controller and an optical controller, wherein the optical controller is electrically connected to the laser ranging sensor and the current controller respectively;

[0015] The current controller sends a control current, and the optical controller is adjusted by the control current;

[0016] The laser distance sensor is used to emit laser light, and the laser light reaches the inner wall of the converter through the adjusted optical controller;

[0017] Wherein, the optical controller is a galvanometer system. The laser distance measuring transmitter comprises: a laser distance measuring sensor, a current controller and an electric displacement platform;

[0018] The laser distance measuring sensor is arranged on the electric displacement platform;

[0019] The current controller sends a control current, and the angle of the electric displacement platform is adjusted by the control current, so as to control the laser emitted by the laser ranging sensor to completely cover the inner wall of the converter.

[0020] According to a converter laser thickness gauge provided by the present invention, the laser ranging sensor is also used for:

[0021] receiving a return laser beam passing through the optical controller;

[0022] The angle information and distance data of the returning laser light are determined according to the returning laser light.

[0023] According to a converter laser thickness gauge provided by the present invention, the converter laser thickness gauge further comprises: a backward laser ranging module;

[0024] The backward laser ranging module emits laser light to the outer wall of the converter, receives laser light returned from the outer wall, and obtains angle information and distance information of the laser light returned from the outer wall;

[0025] The angle information and distance information of the laser beam returned from the outer wall are sent to the data processing module.

[0026] According to a converter laser thickness gauge provided by the present invention, the laser is: a laser in the infrared band or a laser of the second laser grade;

[0027] The second laser level laser refers to a laser that meets the second level of eye safety.

[0028] According to a converter laser thickness gauge provided by the present invention, the converter laser thickness gauge further comprises: a liquid nitrogen cooling module;

[0029] When the laser distance measuring module includes a laser distance measuring transmitter, the laser distance measuring module is 4 meters away from the converter;

[0030] The liquid nitrogen cooling module is used to cool the laser ranging module.

[0031] According to a converter laser thickness gauge provided by the present invention, when the laser distance measuring module includes three laser distance measuring transmitters, the laser distance measuring module is 50 meters away from the converter, and the laser distance measuring transmitters are 23 meters apart from each other.

[0032] According to a converter laser thickness gauge provided by the present invention, when the laser distance measuring module includes three laser distance measuring transmitters, the laser distance measuring module is 20 meters away from the converter, and the laser distance measuring transmitters are 7.5 meters apart from each other.

[0033] According to a converter laser thickness gauge provided by the present invention, the data processing module is also used to simultaneously perform three-dimensional imaging based on the angle information and distance information of the returned lasers of each laser rangefinder transmitter to obtain a three-dimensional image of the converter inner wall. The converter laser thickness gauge provided by the present invention emits lasers through the laser rangefinder module, and simultaneously measures the distances and angles of different angles and positions of the converter inner wall, and uses the data processing algorithm to perform real-time three-dimensional modeling to obtain the complete distance and angle data of each point of the lining, and the algorithm processes and compares the original data of each point of the lining to obtain accurate information on the thickness of the lining, thereby guiding the on-site slag splashing and furnace protection of the converter to achieve the purpose of extending the service life of the converter and saving energy and reducing emissions. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 This is one of the structural schematic diagrams of the converter laser thickness gauge provided by the present invention;

[0036] Figure 2 A schematic diagram of the mechanism of the laser rangefinder transmitter provided by the present invention;

[0037] Figure 3 The second structural schematic diagram of the converter laser thickness gauge provided by the present invention;

[0038] Figure 4 This is the third structural schematic diagram of the converter laser thickness gauge provided by the present invention. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] Combine the following Figure 1-Figure 4 The converter laser thickness gauge of the present invention is described.

[0041] Figure 1 This is one of the structural schematic diagrams of the converter laser thickness gauge provided by the present invention, such as Figure 1 As shown, it includes: a laser ranging module 1 and a data processing module 2;

[0042] The laser ranging module 1 is used to emit laser light to the inner wall of the converter, and the laser light completely covers the inner wall of the converter;

[0043] The laser ranging module 1 is also used to receive the returned laser and obtain the angle information and distance data of the returned laser;

[0044] The data processing module 2 is used to obtain the converter inner wall thickness data according to the angle information and distance data.

[0045] The laser rangefinder module in the present application is specifically implemented through a laser rangefinder transmitter, and the laser rangefinder transmitter can specifically be a pulsed laser rangefinder transmitter or a phase-method laser rangefinder transmitter; the pulsed laser rangefinder transmitter emits a beam or a sequence of short pulsed laser beams to the target when working, and the laser rangefinder transmitter receives the laser beam reflected by the target, and the timer measures the time from the emission to the reception of the laser beam, and calculates the distance from the observer to the target. The phase-method laser rangefinder transmitter detects the distance by detecting the phase difference between the emitted light and the reflected light when propagating in space. The laser rangefinder transmitter is light in weight, small in size, simple to operate, fast and accurate. The laser rangefinder module in the present application is arranged below the converter furnace mouth, and needs to maintain an appropriate distance from the converter to avoid the influence of the higher temperature of the converter on the laser rangefinder module.

[0046] After determining the inner wall of the converter, the laser ranging module can control the laser emitted by the laser ranging transmitter to cover different positions of the inner wall of the converter to ensure that the inner wall of the converter is completely covered.

[0047] Then the laser ranging module can also obtain the return laser from the inner wall of the converter along the original optical path, obtain the angle information and distance data of the return laser, and perform data analysis on the angle information and distance data of the return laser to obtain the real-time three-dimensional morphology of the inner wall of the converter. The computer compares the data of each point of the original lining to obtain the complete thickness data of the inner wall of the converter.

[0048] The data processing process of the computer comparing the data processing of the converter model in the present invention belongs to the commonly used algorithm in the prior art, and the present invention does not specifically limit it. Any model that can realize the calculation of the inner wall thickness of the converter can be applied to this solution.

[0049] The present invention emits laser through a laser ranging module, and simultaneously measures the distances and angles of different angles and positions of the inner wall of the converter, and uses a data processing algorithm for real-time three-dimensional modeling to obtain complete distance and angle data of each point of the lining. The algorithm processes and compares the original data of each point of the lining to obtain accurate information on the thickness of the lining, thereby guiding the on-site slag splashing and furnace protection of the converter to achieve the purpose of extending the service life of the converter and saving energy and reducing emissions.

[0050] In one embodiment, the laser ranging module includes: one or more laser ranging transmitters.

[0051] Specifically, in the present invention, laser coverage of the inner wall of the converter can be achieved through a laser rangefinder transmitter, but it can only be achieved when the laser rangefinder transmitter is close to the converter. It often requires additional cooling equipment to cool the laser rangefinder transmitter to ensure the normal operation of the equipment.

[0052] However, the cooling device in the present application can also be provided on a laser ranging module with multiple laser ranging transmitters as required.

[0053] In the present invention, multiple laser rangefinders can also be used to achieve laser coverage of the inner wall of the converter. At this time, the laser rangefinder is often relatively far away from the converter, which can achieve complete laser coverage of the inner wall of the converter while avoiding the influence of the high temperature of the converter on the laser rangefinder. The present application can achieve complete laser coverage of the inner wall of the converter by one or more laser rangefinders, which provides multiple different options for actual production.

[0054] In one embodiment, when the laser distance measurement module includes a plurality of laser distance measurement transmitters, the plurality of laser distance measurement transmitters simultaneously emit lasers toward the inner wall of the converter;

[0055] The multiple laser rangefinder transmitters are also used to simultaneously receive the return lasers of each laser rangefinder transmitter, and the data processing module simultaneously processes the angle information and distance information of the return lasers of each laser rangefinder transmitter.

[0056] Specifically, when there is a laser rangefinder, the laser is emitted simultaneously during the measurement of the same converter inner wall, so its return laser is obviously received simultaneously, so that the distance and angle of different angles and positions of the converter inner wall can be measured simultaneously; and the data processing module also processes the angle information and distance data of each return laser at the same time, and finally obtains the overall converter inner wall thickness for overall analysis. In one embodiment, the laser rangefinder includes:

[0057] A laser ranging sensor, a current controller and an optical controller, wherein the optical controller is electrically connected to the laser ranging sensor and the current controller respectively;

[0058] The current controller sends a control current, and the optical controller is adjusted by the control current;

[0059] The laser distance measuring sensor is used to emit laser light, and the laser light reaches the inner wall of the converter through the adjusted optical controller.

[0060] The laser distance measuring transmitter comprises: a laser distance measuring sensor, a current controller and an electric displacement platform;

[0061] The laser distance measuring sensor is arranged on the electric displacement platform;

[0062] The current controller sends a control current, and the angle of the electric displacement platform is adjusted by the control current, so as to control the laser emitted by the laser ranging sensor to completely cover the inner wall of the converter.

[0063] Figure 2 The schematic diagram of the mechanism of the laser distance measuring transmitter provided by the present invention comprises a laser distance measuring sensor 21, a current controller 22 and an optical controller 23; when working, the laser distance measuring sensor 21 emits laser, and the current controller 22 sends a control current to the optical controller 23, thereby controlling the angle of the optical controller 23, thereby adjusting the angle of the laser passing through the optical controller 23, and ensuring that the laser emitted by the laser distance measuring transmitter can fully cover the inner wall of the converter;

[0064] Wherein, the optical controller is a galvanometer system.

[0065] The galvanometer system described in the present invention inputs a control current, and the oscillating motor of the galvanometer will oscillate a certain angle according to a certain voltage and angle conversion ratio, thereby realizing the control of the laser angle.

[0066] The optical controller described in the present invention can also be a rotating device with a lens installed, and the rotation of the rotating device is controlled by controlling the current to adjust the lens, thereby controlling the laser angle. More specifically, the laser ranging sensor is also used for:

[0067] receiving a return laser beam passing through the optical controller;

[0068] The angle information and distance data of the returning laser light are determined according to the returning laser light.

[0069] After the emitted laser covers the inner wall of the converter, the reflected laser of the inner wall of the converter returns along the original optical path. After passing through the optical controller 23, the returned laser returns to the distance sensor 21. The distance sensor 21 can further provide the distance and angle data of the returned laser.

[0070] The laser rangefinder transmitter in the present invention controls the angle of the optical controller through a current controller, thereby adjusting the laser emission angle of the laser rangefinder sensor, ensuring that the emitted laser can completely cover the inner wall of the converter, thereby ensuring that the prepared converter inner wall thickness can be obtained.

[0071] In one embodiment, the converter laser thickness gauge further includes: a backward laser ranging module;

[0072] The backward laser ranging module emits laser light to the outer wall of the converter, receives laser light returned from the outer wall, and obtains angle information and distance information of the laser light returned from the outer wall;

[0073] The angle information and distance information of the laser beam returned from the outer wall are sent to the data processing module.

[0074] Figure 3 The second structural schematic diagram of the converter laser thickness gauge provided by the present invention is as follows: Figure 3 As shown, it includes: a converter 31, a laser ranging module 32, a data processing module 33 and a backward laser ranging module 34;

[0075] Among them, the backward laser ranging module 34 has the same structure as the laser ranging module 32, and it includes one or more laser ranging transmitters, which can be arranged on the side of the converter, emit lasers that can cover the entire outer wall of the converter to the outer wall of the converter, receive the laser returned by the outer wall, and obtain the angle information and distance information of the laser returned by the outer wall, and send the angle information and distance information of the laser returned by the outer wall to the data processing module 33; and the data processing module 33 can combine the data of the reflected laser from the inner wall sent by the laser ranging module 32 and the reflected laser from the outer wall sent by the backward laser ranging module 34, so as to obtain more accurate converter information.

[0076] The present invention can further achieve the measurement of the outer wall of the converter by adding the backward laser ranging module 34, so that the information of the converter measurement is richer and more accurate.

[0077] In another embodiment, the laser is: a laser in the infrared band or a laser of the second laser level;

[0078] The second laser level laser refers to a laser that meets the second level of eye safety.

[0079] Specifically, infrared laser is used in the present application because it can achieve a higher-precision measurement effect, and the accuracy of the measurement effect is generally maintained at ±1mm.

[0080] The second laser level laser used in this application is based on the consideration that during the measurement process, there are still people working around the drum. In order to protect human eye safety, a laser that meets the second level of human eye safety is selected.

[0081] The wavelength band of the laser emitted by the laser ranging transmitter described in the present application can be the common 635nm band or the common 905nm band, or it can be the 650nm band, 620-690nm band, 630nm-670nm band, 850nm band or 495nm-515nm band.

[0082] The laser type selection in the present invention further protects the safety of human eyes during the measurement process.

[0083] In one embodiment, the converter laser thickness gauge further comprises: a liquid nitrogen cooling module;

[0084] When the laser distance measuring module includes a laser distance measuring transmitter, the laser distance measuring module is 4 meters away from the converter;

[0085] The liquid nitrogen cooling module is used to cool the laser ranging module.

[0086] Specifically, due to the high temperature near the converter, the laser rangefinder transmitter is a relatively precise measuring instrument and cannot work at high temperature for a long time. The laser rangefinder module contains a laser rangefinder transmitter, which needs to be relatively close to the converter to achieve complete laser coverage of the inner wall of the converter.

[0087] However, when the laser ranging transmitter needs to be relatively close to the converter, its temperature will be too high, and the laser ranging module needs to be cooled. The present invention accordingly adds a liquid nitrogen cooling module to the laser ranging module, thereby achieving cooling of the laser ranging module to prevent it from failing to work normally due to overheating.

[0088] In the present invention, the module is cooled by liquid nitrogen, thereby ensuring that the laser ranging module will not fail to work normally due to overheating.

[0089] In one embodiment, when the laser distance measuring module includes three laser distance measuring transmitters, the laser distance measuring module is 50 meters away from the converter, and the laser distance measuring transmitters are 23 meters apart from each other.

[0090] In one embodiment, when the laser distance measuring module includes three laser distance measuring transmitters, the laser distance measuring module is 20 meters away from the converter, and the laser distance measuring transmitters are 7.5 meters apart from each other.

[0091] Specifically, when the distance between the laser ranging module and the converter is adjusted in the present invention, the distance between the laser ranging modules also needs to be adjusted accordingly, so as to ensure that the laser emitted by the laser ranging module can cover the entire inner wall of the converter.

[0092] Figure 4 The third structural schematic diagram of the converter laser thickness gauge provided by the present invention is as follows: Figure 4 As shown, it includes: a laser ranging module 41 and a data processing module 42; wherein the laser ranging module 41 includes three laser ranging transmitters.

[0093] The present invention can realize laser ranging under different requirements by combining the distances between a plurality of different laser ranging transmitters.

[0094] For example, when the converter is a large-sized steelmaking furnace, the distance between the laser distance measurement module 41 and the converter is 20 meters. The laser distance measurement module 41 includes three laser distance measurement transmitters, and the laser distance measurement transmitters are 7.5 meters apart. The emitted laser meets the second level of human eye safety, and the measurement accuracy of the laser distance measurement transmitter is ±1mm. The converter thickness data is finally determined based on the reflected laser.

[0095] In one embodiment, the data processing module is also used to simultaneously process the angle information and distance information of the returned lasers from each laser rangefinder transmitter.

[0096] In the present invention, the angle information and distance information of the returned lasers of each laser rangefinder are processed simultaneously, which is simultaneous.

[0097] In the present invention, the three-dimensional imaging technology can make the measurement results easier to observe and better guide the production work.

[0098] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0099] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0100] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A converter laser thickness gauge, characterized in that: include: Laser ranging module and data processing module; The laser ranging module is used to emit laser to the inner wall of the converter, and the laser completely covers the inner wall of the converter; The laser ranging module is also used to receive the returned laser and obtain the angle information and distance data of the returned laser; The data processing module is used to obtain the converter inner wall thickness data according to the angle information and the distance data; Wherein, the laser ranging module includes: one or more laser ranging transmitters; Wherein, when the laser distance measuring module comprises a plurality of laser distance measuring transmitters, the plurality of laser distance measuring transmitters simultaneously emit lasers toward the inner wall of the converter; The multiple laser rangefinder transmitters are also used to simultaneously receive the return lasers of each laser rangefinder transmitter, and the data processing module simultaneously processes the angle information and distance information of the return lasers of each laser rangefinder transmitter; Wherein, the laser rangefinder transmitter comprises: A laser ranging sensor, a current controller and an optical controller, wherein the optical controller is electrically connected to the laser ranging sensor and the current controller respectively; The current controller sends a control current, and the optical controller is adjusted by the control current; The laser distance sensor is used to emit laser light, and the laser light reaches the inner wall of the converter through the adjusted optical controller; Wherein, the optical controller is a galvanometer system.

2. The converter laser thickness gauge according to claim 1, characterized in that: The laser distance measuring transmitter comprises: a laser distance measuring sensor, a current controller and an electric displacement platform, wherein the current controller is electrically connected to the electric displacement platform; The laser distance measuring sensor is arranged on the electric displacement platform; The current controller sends a control current, and the angle of the electric displacement platform is adjusted by the control current, so as to control the laser emitted by the laser ranging sensor to completely cover the inner wall of the converter.

3. The converter laser thickness gauge according to claim 1, characterized in that: The laser distance sensor is also used for: receiving a return laser beam passing through the optical controller; The angle information and distance data of the returning laser light are determined according to the returning laser light.

4. The converter laser thickness gauge according to claim 1, characterized in that: The converter laser thickness gauge also includes: a backward laser ranging module; The backward laser ranging module emits laser light to the outer wall of the converter, receives laser light returned from the outer wall, and obtains angle information and distance information of the laser light returned from the outer wall; The angle information and distance information of the laser beam returned from the outer wall are sent to the data processing module.

5. The converter laser thickness gauge according to claim 1, characterized in that: The converter laser thickness gauge further comprises: a liquid nitrogen cooling module; When the laser distance measuring module includes a laser distance measuring transmitter, the laser distance measuring module is 4 meters away from the converter; The liquid nitrogen cooling module is used to cool the laser ranging module.

6. The converter laser thickness gauge according to claim 1, characterized in that: When the laser distance measuring module includes three laser distance measuring transmitters, the laser distance measuring module is 50 meters away from the converter, and the laser distance measuring transmitters are 23 meters apart from each other.

7. The converter laser thickness gauge according to claim 1, characterized in that: When the laser distance measuring module includes three laser distance measuring transmitters, the laser distance measuring module is 20 meters away from the converter, and the laser distance measuring transmitters are 7.5 meters apart from each other.

8. The converter laser thickness gauge according to claim 1, characterized in that: The data processing module is also used to simultaneously perform three-dimensional imaging based on the angle information and distance information of the returned lasers of each laser rangefinder transmitter to obtain a three-dimensional image of the inner wall of the converter.

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