Temperature control system of vertical type drying tower

Abstract

Provided is a temperature control system of a vertical type drying tower. A drying tower body is provided with seven layers. A ventilation pipeline is connected on the drying tower body. Multiple heating elements are arranged inside the drying tower body. Thermostats are electrically connected with the heating elements. There are five thermostats which are respectively arranged on the second layer, the fourth layer, the fifth layer, the sixth layer and the ventilation pipeline of the drying tower body. A concurrent control mode is performed among all the thermostats. Consumption of electric quantity is reduced, and partitioning temperature control can be realized so that control of temperature in the drying tower is more effective, more uniform, more convenient and safer, and operation period of equipment is enhanced and production cost is reduced. Besides, the temperature control system is time-saving and labor-saving in the maintenance process so that long period of stable production is guaranteed.

Description

technical field [0001] The invention relates to a device in the technical field of a vertical drying tower, in particular to a temperature control system of a vertical drying tower. Background technique [0002] As an important equipment in the carbonization process, the vertical drying tower is used to dry the sized carbon fiber. But since it was put into operation, many problems have appeared in the vertical drying tower. For example: the electric heating plate in the local area of ​​the drying tower melts, the thermal resistance changes in a large range, the life of the thermal resistance is short, and the temperature control in the drying tower is unstable. These problems have affected the company's normal production to a certain extent, reduced production efficiency, increased production costs, and reduced product quality. The specific problems are analyzed as follows: [0003] 1. The electric heating plate in the local area of ​​the drying tower melted. According to...

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Problems solved by technology

Obviously, this will cause the temperature controller to be unable to effectively and reasonably control the temperature inside the vertical drying tower

The reason is: assuming that the bottom temperature has reached the set temperature, but because the top temperature cannot meet the process requirements, the bottom temperature must be increased to make the top temperature meet the requirements, but excessive heating will cause the local electric heating plate of the drying tower to melt

[0004] 2. The temperature range of the electric thermal resistance is large, and the thermal resistance is easy to be damaged, because the effective temperature measurement points are located at the top and bottom of the vertical drying tower

Since there are only two effective temperature control points, if one of them is damaged, the other temperature control point will also be unusable, thus making it impossible to effectively control the temperature of the vertical drying tower, affecting product quality, and even causing the production line to stop in severe cases

[0006] 4. Repair and maintenance are difficult

In view of the special structure of the vertical drying tower and the simplification of the control method, the internal temperature can only be known through the central control

Since the installation locations are far apart, if the thermal resistance fails, the outer cover of the entire vertical drying tower needs to be opened, and the workload is large

[0007] 5. The cost of electricity consumption is high

Since there are only two temperature control points, the temperature range of the thermal resistance varies greatly, and the power consumption of the power regulator is large, thus increasing the power loss

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