How to control the temperature of wind turbine blade mold molding? 10

The accuracy of the heating temperature control of the wind turbine blade mold has a great impact on the quality and production efficiency of the blade. At present, the most widely used mold temperature control methods are electric heating and water circulation heating system.

Traditional Electric Heating Methods:

1.On the one hand, the error of the temperature sensor measurement, on the other hand, the electric heating is relatively concentrated, and the temperature is uneven.

2.If the temperature control is abnormal, it is easy to lead to unqualified wind turbine blade products, scrapping of blades, burning and carbonization of the inner structure of wind turbine blade mold FRP, and in serious cases, causing accidents such as wind turbine blade mold fire.

3.The disadvantage of heating wire heating is that the mold is heated unevenly, if the heating wire is burned, it is difficult to check that group of heating wires are burned, which will greatly affect the production schedule.

Water Temperature Control Method:

1.Wind turbine blade molds with a water cycle temperature control system can minimize this error.

2.By circulating water heating, the cavity temperature is kept within the target temperature, and due to indirect heat transfer, the overshoot of the system is very small.

3.The PLC touch screen control system is adopted, which can display the dynamic flow chart of the heating and cooling system in real time, and is used for the display and adjustment of technical parameters such as temperature and time of the equipment.

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Wind turbine blade mold temperature control has a crucial impact on product quality, if the temperature is not well mastered, it is easy to incur wind turbine blade products unqualified, blade scrapping, wind turbine blade mold FRP internal organ burning paste carbonization. When it is important, accidents such as wind turbine blade mold fire will be formed. Therefore, temperature control (wind turbine blade water thermostat) is a key technology in the forming process of wind power blades.

The design and selection of water temperature machine and mold temperature machine in the wind turbine blade industry are roughly as follows:

For blades below meters, the upper and lower molds are selected to be 72 kilowatts, and the girder web is selected to be 36 kilowatts.

The upper and lower molds of the 60-meter blade mold are selected 90 kilowatts, and the girder web is selected with 72 kilowatts.

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Correct operation steps of wind turbine blade mold temperature machine:

1. Before use, it is necessary to check whether there is enough heat transfer medium (oil or water), whether there is pressure (that is, the pressure gauge is zero), if there is an abnormality, the machine can not be forcibly started, otherwise the machine will be damaged, and even cause safety accidents.

2. The hose connecting the wind turbine blade mold temperature machine to the mold must be a high temperature resistant to more than 150 pipes or iron dragon pipes, and the tubing is connected and locked, and checked again after starting the machine to avoid loosening; When the surrounding environment of the water source and cooling tower is harsh, the cooling water circuit must be equipped with a Y-shaped filter and cleaned regularly to ensure the normal operation of the cooling system of the mold temperature machine.

3. The power supply of the wind turbine blade mold temperature machine adopts three-phase five-wire, with a voltage of 380V-400V, and the power live wire is connected to the MCCB power switch, the neutral line is connected to the neutral line (neutral line), and the water line is connected to the power supply shell (ground wire).