Spiral wound tube heat exchanger and variable flow spiral tube cooling device

Abstract

The invention discloses a spiral winding tube type heat exchanger and a variable flow cooling device. The spiral winding tube type heat exchanger comprises a shell (1) and a spiral tube bundle located at the two ends in the shell and installed on a tube plate (6), a tube pass inlet (1-1), a tube pass outlet (1-2), a shell pass inlet (1-3) and a shell pass outlet (1-4) are formed in the shell (1), the spiral tube bundle is composed of a plurality of layers of spiral tubes (2) which are wound into the spiral shape concentrically, and a plurality of spiral tubes (2) are wound in the same direction to form each layer of spiral tubes (2); a plurality of baffle plates (4) are installed between the layers of spiral tubes (2), and the two ends of each baffle plate (4) are fixed to the corresponding spiral tube (2). Not only can the heat exchange strength of fluid in the tubes be guaranteed, but also convection heat exchange of fluid outside the tubes can be strengthened; the exterior of the winding tube type heat exchanger is connected with a temperature sensor, a control system, a variable frequency motor, a pump and other system parts, the flowing amount of cooling mediums can be adjusted in real time, the winding tube type heat exchanger adapts to changes of cooling loads, and the energy-saving requirement is met; meanwhile, the winding tube type heat exchanger has the advantages of preventing scaling and being resistant to corrosion.

Description

technical field [0001] The invention belongs to the technical field of convective heat transfer, energy-saving and consumption-reducing fluid heat exchange, and specifically relates to a variable-flow spiral tube cooling device capable of real-time adjustment of the flow rate of a heat-exchange medium and a small difference in convective heat transfer coefficient between the inside and outside of the spiral tube, and a cooling device Helically wound tube heat exchanger with baffles. Background technique [0002] Traditional shell-and-tube heat exchangers have limited length of heat exchange tubes, and the heat exchange area arranged per unit volume is small; the safe operation of equipment is often limited by the maximum working temperature of the heat exchange medium, and whether there will be flow rate dramas such as flow dead angles. In the drop zone, the heat exchange surface is damaged due to thermal stress due to local uneven heat exchange; when the equipment is in lon...

AI Technical Summary

Problems solved by technology

However, the helically wound tube heat exchanger cannot be installed on the helically wound tube bundle by using the existing heat exchanger baffle technology because the tubes are wound into a helical shape.

For this problem, relevant personnel in this industry have done a lot of work but still can't solve it, resulting in the inability to use baffles to enhance heat transfer in the shell side of the spiral wound tube heat exchanger

Therefore, the overall heat transfer effect of the spiral wound tube heat transfer surface is not significantly improved.

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