Design of Oxygen Lance Elevating Device
Oxygen lance is an important device for steelmaking and sliding. The quality of the lance affects the quality of the steel directly. In order to make sure the lance works properly and enhance the safety and efficiency of the steelmaking process, it is necessary to design an elevating device for oxygen lance. This article will introduce design principles of the elevating device and its structure, performance, materials and safety protective measures.
Design Principles
The first principle for the design of the oxygen lance elevating device is to ensure the normal operation of the steelmaking process. In order to do this, the elevating device needs to have a stable structure which can bear the weight of the lance and the operation is smooth and safe.
The second principle is to reduce cost and materials as much as possible while still meeting the requirements of the steelmaking process. The third principle is to take into account the environmental protection factor. The use of the environmental protection material can reduce the impact of manufacturing process on the environment.
The fourth principle is to consider the safety of the operators. The design should be ergonomic and the materials used should meet the safety standards of the operation process.
Structure
The structure of the oxygen lance elevating device consists of two parts: the frame and the lifting mechanism. The frame is mainly composed of two columns, crossbeam on the top, four connecting beams and six supporting legs. The two columns are welded of steel plate with H section, the crossbeam is also made of steel plate and the four connecting beams and six supporting legs are made of steel tube with the same size.
The lifting mechanism is mainly composed of two sets of drive motors, four connecting rods and two sets of reducers. The drive motors are used to drive the lifting movement, the reducers are used to reduce the speed of the moving objects and the connecting rods are connected between the frame and the lifting mechanism, which is used to transfer the force from the drive motors to the frame.
Performance
The performance of the oxygen lance elevating device should meet the following requirements. First of all, the elevating speed should be adjustable and the range should be 0-50mm/s. Secondly, the service life of the device should be more than 5000 hours and the working environment should be within -20℃-40℃. Finally, the noise should be below 70dB.
Materials
The materials used in the design of the oxygen lance elevating device should meet the following requirements. First of all, the frame should be made of steel plate and the connecting rods and supporting legs should be made of steel tube. Secondly, the drive motors should have enough power and be able to support the weight of the lance. Thirdly, the reducers should also have a large torque and a high speed ratio.
Safety Protective Measures
To ensure the safety of the operators, the oxygen lance elevating device should be equipped with adequate safety protection measures. First of all, the device should have a safety mechanism which can automatically cut off the power supply when an overload is detected, so that the lance will not drop suddenly. Secondly, an emergency stop button should be installed in case of emergency. Finally, the lance should be equipped with a pressure-limiting device to prevent over-pressurization of the lance when it is lowered into the furnace.
Conclusion
This article has introduced the design principles, structure, performance, materials and safety protective measures of the oxygen lance elevating device. The design should take into account the efficiency, cost and environmental protection factors, and the materials used should meet the requirements of the steelmaking process. In addition, the device should have sufficient safety protection measures to protect the operators in the steelmaking process.
