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The main reasons for the power consumption of the Mold Temperature Machine?

Date:Jul 11, 2018

The main reasons for the power consumption of the Mold Temperature Machine?

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The mold temperature machine is composed of a water tank, a heating and cooling system, a power transmission system, a liquid level control system, a temperature sensor, an injection port and the like. Typically, the pump in the power transmission system causes the hot fluid to reach the mold from the tank with the built-in heater and cooler, and then from the mold back to the tank; the temperature sensor measures the temperature of the hot fluid and transmits the data to the control section. Controller; the controller adjusts the temperature of the hot fluid to indirectly adjust the temperature of the mold. If the mold temperature is in production and the temperature of the mold exceeds the set value of the controller, the controller opens the solenoid valve to open the inlet pipe until the temperature of the hot liquid, that is, the temperature of the mold returns to the set value. If the mold temperature is lower than the set value, the controller turns on the heater.

The power consumption of the mold temperature machine is mainly generated by electric heating and oil pump, and the electric heating part is mainly used. In the molding process, from the mold warming machine to the mold preheating to the later normal production, the loss of electric energy is mainly concentrated in the preheating part of the mold in the early stage, and in the later normal production, the mold temperature machine is mainly from the beginning. To cool down. Because the high heat brought into the mold at the beginning will cause the temperature of the mold to rise, in the later normal production, the heating part of the mold temperature machine only plays the role of temperature regulation, which is not always in the heating state but in the heat preservation or cooling state. It is the normal circulation of the oil pump. For some high-temperature oil pumps in some industries, it is recommended that customers choose Siemens when choosing the mold temperature machine. Siemens motor power is mainly 3HP (2.25KW) 5HP (3.75KW) dual-machine integrated mold temperature machine. , the motor power is also multiplied by 2, plus the heating power part of the temperature control of the electrical energy will not have a high power loss

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In addition, the frequent suction of the mold temperature contactor is likely to cause the contactor to be stuck and the temperature is always warm. It is recommended to use solid state relay or thyristor control. As for causing fires, it is necessary to see whether the mold temperature machine manufacturers have taken protective measures against over-temperature, such as the use of over-temperature protection, after the set temperature is exceeded, the whole machine is powered off to reduce the possibility of fire.

How to calculate the power consumption There are two main power consumption components of the mold temperature machine, one is the circulation pump and the other is the electric heating tube. When the mold temperature machine is in normal operation, the circulation pump is always in working state, and its power consumption per hour is the power of the pump. For example, the working power of the pump is 1KW, and its power consumption is 1Kw/h. The electric heating tube is not always in working condition. In the initial heating phase, the power consumption is the heating power of the electric heating tube. In the later stage of maintaining the constant temperature, the power consumption is between 1/3 and 2/3 of the electric heating tube power. If economically permitted, it is recommended that the electric heating tube be controlled by a thyristor to control the power consumption to a minimum level.

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