{"id":2052,"date":"2021-06-17T15:26:42","date_gmt":"2021-06-17T07:26:42","guid":{"rendered":"https:\/\/www.hjkir.com\/?p=2052"},"modified":"2024-01-22T16:52:26","modified_gmt":"2024-01-22T08:52:26","slug":"%e9%92%a2%e5%8c%85%e5%9c%a8%e7%ba%bf%e7%9b%91%e6%b5%8b%e7%ba%a2%e5%a4%96%e5%ba%94%e7%94%a8","status":"publish","type":"post","link":"https:\/\/www.hjkir.com\/industry\/en\/2052.html","title":{"rendered":"Infrared application of ladle on-line monitoring"},"content":{"rendered":"

Project background<\/strong><\/h2>\n

Baosteel Steelmaking Plant has always relied on the visual observation and empirical judgment of operators to judge the refractory of ladle lining, lacking effective and accurate judgment methods.<\/p>\n

The current ladle age management mode, for the purpose of ladle use safety, adopts the mode of cycle management as the main and dynamic management as the auxiliary, that is, the ladle age of overhaul cycle \u2264 150 times, and the ladle age of minor overhaul cycle \u2264 25 times. Although the residual thickness of refractory material is also specified (the working layer brick of ladle wall \u2265 60mm), due to the inability to accurately judge, the post measurement is only carried out during ladle overhaul, which may lead to the waste of refractory materials caused by the early offline of ladle.<\/p>\n

There are potential safety hazards and waste of refractory materials in the judgment method of ladle lining and ladle age management mode.<\/p>\n

\"\u94a2\u5305\u5728\u7ebf\u76d1\u6d4b\u7ea2\u5916,\u94a2\u5305\u7ea2\u5916\"<\/p>\n

Infrared application<\/strong><\/h2>\n

1.<\/strong>Imported infrared thermal imager<\/strong><\/h2>\n

The infrared thermal imager is independently installed on the mechanical support next to the tilt table. During the operation of the ladle infrared monitoring system, only the on-site operators need to input the ladle number and ladle posture, which does not affect the normal production process.<\/p>\n

2.<\/strong>Necessity of ladle transformation<\/strong><\/h2>\n

If the ladle lining is damaged and not repaired in time, it will lead to the production accident of steel leakage and the accident of staff injury. If the ladle lining damage can be detected in time and the real-time alarm can remind the staff to repair, it will improve the safety of production and avoid the damage to personnel and equipment caused by the accident and the human and material resources consumption caused by the emergency repair.<\/p>\n

Damage to the ladle lining will change the thermal conductivity of the ladle, resulting in changes in the temperature field on the surface of the ladle. Online infrared thermal imaging can provide real-time infrared imaging of the ladle surface, monitor the temperature field of the ladle surface in real time, and store the temperature field data of the ladle surface.<\/p>\n

After storing the data for a period of time, analyze and infer the alarm threshold of the temperature field on the surface of the ladle and set it as the alarm value. After setting the alarm threshold, the data of the ladle surface temperature field is analyzed in real time. When the ladle surface temperature field reaches the alarm condition, the real-time alarm reminds the staff to overhaul the ladle to avoid safety accidents.<\/p>\n

By analyzing the temperature field data of the ladle surface, on the premise of ensuring the safe production of the ladle, appropriately extend the service life of the ladle, reduce the waste of refractory materials and reduce the production cost.<\/p>\n

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Case analysis<\/strong><\/h2>\n

1.<\/strong>Scheme details<\/strong><\/h2>\n

The whole system consists of hardware system and software system. Their composition and functions are detailed below.<\/p>\n

Hardware design: the hardware equipment is installed on site and in the control room. The scene mainly includes infrared thermal imager and operation console, and the control room has analysis host and audible and visual alarm.<\/p>\n

2.<\/strong>Hardware design<\/strong><\/h2>\n

When the ladle reaches the 3# tilting table for slag dumping, it is in the process of slag dumping. When the on-site staff observed that the ladle was in the following three postures, the on-site staff pressed the infrared photo button to take infrared photos of the ladle.<\/p>\n