Rotary online flushing device and process system for tubular heat exchanger

Abstract

The invention provides a rotary online flushing device for a tubular heat exchanger, which comprises a liquid inlet tube assembly, a hydraulic steering mechanism, a liquid outlet tube assembly and a heat exchange tube flushing nozzle, wherein the hydraulic steering mechanism comprises a shell, a right-angle insertion tube, a drive bevel gear and a driven bevel gear; two ports of the right-angle insertion tube communicate with a liquid outlet of the liquid inlet tube assembly and a liquid inlet of the liquid outlet tube assembly respectively, the drive bevel gear and the driven bevel gear are arranged on the outer sides of two right-angle side pipelines of the right-angle insertion tube in a sleeving mode respectively, the liquid inlet tube assembly drives the drive bevel gear to rotate, and the driven bevel gear drives the liquid outlet tube assembly to rotate; The invention further provides a process system with the rotary online flushing device for the tubular heat exchanger. The rotary online flushing device and process system for the tubular heat exchanger have the advantages of being scientific in design, not easy to damage, smooth in transmission, reliable in use and capableof integrating the functions of high-pressure water flushing, dosing and cleaning.

Description

technical field [0001] The invention relates to a cleaning device, in particular to a rotary on-line cleaning device for a tubular heat exchanger and a process system. Background technique [0002] Tube-and-tube heat exchanger is a commonly used heat exchanger in the industrial field. Due to the heat exchange and the concentration of cooling water during operation, mud and scaling will occur in the heat exchange tubes or fins. It needs to be cleaned. The conventional cleaning method of the original heat exchanger is mainly manual mechanical cleaning or chemical cleaning. When cleaning, it is necessary to stop the machine and disassemble the heat exchanger. The cleaning personnel enter the water chamber of the heat exchanger through the manhole to clean and inspect the heat exchange tubes. Not only labor and materials are wasted, the working environment of personnel is poor, but also the normal operation of the unit is affected. [0003] For the tube-and-tube heat exchanger...

AI Technical Summary

Problems solved by technology

For example, the applicant provided a "hydraulic steering device" in the invention patent with application number 201420601506.3, which is the steering mechanism used in the online flushing device of the tube-and-tube heat exchanger, which has the following disadvantages: ( 1) During the steering transmission process, the bearing is only installed between the shaft sleeve and the end of the right-angled cannula, and the bevel gear is fixed at the front end of the shaft sleeve, causing the bevel gear to "hang in the air" as a whole, easy to shake, resulting in unsmooth meshing and increased wear; (2) The temperature difference between the inside and outside of the cleaning fluid inlet is large, and the fluid will completely soak the periphery of the inlet pipe, where thermal expansion and contraction are more obvious, and long-term rotation may easily cause damage to the seal between the inlet pipe and the installation hole, resulting in liquid leakage; (3) The upper shell and the lower shell are fastened together by the bolts on the protruding edge. Due to thermal expansion and contraction and vibration, the bolt connection is easy to break, resulting in cracking, and the tube-side fluid enters the inside of the shell, which is easy to Damage to hydraulic steering gear

Images