Soaking type acoustic cavitation sewage water heat exchanger

Abstract

An immersion acoustic cavitation sewage heat exchanger, belongs to the technical field of heat exchanger decontamination and reinforced heat exchange, characterized that the sewage heat exchanger comprises a ultrasonic generating device composed of a ultrasonic transducer (1) and a ultrasonic oscillating plate (2), a housing (6) of the heat exchanger, a knockout channel (10), a heat exchange tube bundle (11) and end sockets (5, 7) of the heat exchanger; the ultrasonic transducer (1) is immersed in sewage with surface emitting as ultrasonic mode; sewage flows outside the tube while heat exchange medium flows inside; the effect and advantage thereof is that the ultrasonic acoustic cavitation device is capable of decontaminating and cleaning outside surface of the heat exchange tube regularly or at any time, and strengthening sewage turbulence outside the heat exchange tube under the effect of ultrasonic wave, so as to enhance heat exchange efficiency of the heat exchanger. The invention has simple structure which is convenient to maintain and examine, so that the invention can be widely applied in relevant field such as heat supply, air conditioner, refrigerating and chemical engineering.

Description

technical field [0001] The invention belongs to the technical field of heat exchanger decontamination and heat exchange enhancement, and relates to an immersion type acoustic cavitation sewage heat exchanger. Background technique [0002] In recent years, my country has made a major breakthrough in the thermal energy utilization technology of urban raw sewage, but due to the particularity of raw sewage water quality, the problems of heat exchange equipment blockage and decontamination have not been well resolved. Based on the current technology, commonly used sewage heat exchange equipment includes shell-and-tube heat exchangers and immersion heat exchangers. For shell-and-tube heat exchangers, generally, the medium flowing in the heat exchange tubes of the heat exchanger is sewage. Therefore, after the heat exchanger runs for a long time, dirt and scale will accumulate in the heat exchange tube of the heat exchanger, which not only increases the resistance of the system and...

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Problems solved by technology

[0002] In recent years, my country has made a major breakthrough in the heat energy utilization technology of urban raw sewage, but due to the particularity of raw sewage water quality, the problems of heat exchange equipment blockage and decontamination have not been well resolved.

Based on the current technology, commonly used sewage heat exchange equipment includes shell-and-tube heat exchangers and immersion heat exchangers. For shell-and-tube heat exchangers, generally, the medium flowing in the heat exchange tubes of the heat exchanger is sewage. Therefore, after the heat exchanger runs for a long time, dirt and scale will accumulate in the heat exchange tube of the heat exchanger, which not only increases the resistance of the system and equipment, increases the energy consumption of the water pump, but also increases the fouling heat of the heat exchanger. resistance, resulting in a decrease in the heat transfer coefficient, and the need for regular decontamination and cleaning of the equipment

Although the traditional immersion heat exchanger does not have the problem of blockage of the heat exchanger, because the heat exchange method is natural convection, the heat exchange efficiency is low, resulting in a large heat exchange area and high equipment cost under the same load conditions; The water flow rate in the heat exchange pool is low. After the heat exchanger has been running for a long time, dirt will accumulate in the heat exchange pool, and the outside of the heat exchange tube is easy to scale. Therefore, the cleaning of the dirt in the heat exchange pool and the outside of the heat exchange tube The dirt cleaning workload is relatively large

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