Intelligent PID controlled waste heat recovery device of oil stain-resistant setting machine and method for controlling temperature

Abstract

The invention discloses an intelligent PID controlled waste heat recovery device of an oil stain-resistant setting machine and a method for controlling an internal temperature of a right chamber of the intelligent PID controlled waste heat recovery device. The intelligent PID controlled waste heat recovery device of an oil stain-resistant setting machine comprises a housing and multiple heat pipes. The multiple heat pipes are detachably arranged in the housing and form included angles of 5 to 10 degrees with a horizontal plane. A sealing body is arranged in the middle of the housing. The intelligent PID controlled waste heat recovery device is arranged on the top of the oil stain-resistant setting machine. A hot waste gas outlet and a gas inlet of the oil stain-resistant setting machine are respectively and directly communicated with a hot waste inlet and an outlet of hot air subjected to heat exchange. An outlet of hot waste gas subjected to heat exchange is provided with a regulating valve controlled by an intelligent PID controller. The method for controlling an internal temperature of a right chamber of the intelligent PID controlled waste heat recovery device comprises the following steps of detecting an internal temperature of the right chamber by a temperature sensor, comparing the internal temperature of the right chamber and a preset temperature, and controlling the opening of the regulating valve by control parameters operated and output by the intelligent PID controller so that an internal temperature of the right chamber is greater than or equal to a condensation temperature of gaseous oil mist. The intelligent PID controlled waste heat recovery device of an oil stain-resistant setting machine can effectively reduce or prevent adhesion of oil stains on the surfaces of the heating pipes, and has high waste heat recovery efficiency.

Description

technical field [0001] The invention relates to a waste heat recovery device, in particular to a waste heat recovery device of an intelligent PID-controlled oil-pollution sizing machine in the printing and dyeing industry, and a method for adjusting and controlling the temperature in the right chamber of the waste heat recovery device of the intelligent PID-controlled oil-pollution sizing machine. Background technique [0002] The setting machine is one of the main energy-consuming equipment in the textile printing and dyeing industry. It is a device that uses hot air to dry, finish and set the fabric. Generally, the temperature of the hot air required in the setting machine is about 200°C, and the temperature of its exhaust gas is generally about 170°C, and a large amount of waste heat is discharged into the air. If the loss of fuel combustion and heat dissipation of the body are added, it is estimated that more than 90% of the heat input into the setting machine is scatter...

AI Technical Summary

Problems solved by technology

However, the oil and fiber dust in the exhaust gas bring the disadvantage that the heat pipe is not easy to clean, which still limits the long-term stable use of the waste heat recovery device of the setting machine.

[0003] At present, there are some waste heat recovery products of setting machine on the market, but the common problem is: because the exhaust gas of setting machine contains a large amount of oil mist, it is easy to adhere to the surface of heat pipe during the heat exchange process, which seriously affects the heat transfer and makes the waste heat of setting machine The recoverer cannot work normally, which affects the efficiency of waste heat recovery

Images