Shell and tube heat exchanger and liquid distribution device thereof

Abstract

The invention discloses a shell and tube heat exchanger and a liquid distribution device thereof. The liquid distribution device is arranged in a liquid inlet cavity (5) of the shell and tube heat exchanger, and comprises a liquid distribution plate (1) covering tube openings of heat exchange tubes (7), and liquid distribution openings (2) which are formed in the liquid distribution plate (1) and are formed in one-to-one correspondence with the heat exchange tubes (7) of the liquid inlet cavity (5), wherein circulation areas of the liquid distribution openings (2) are smaller than circulation areas of the heat exchange tubes (7). According to the liquid distribution device provided by the invention, the circulation areas of the liquid distribution openings are smaller than the circulation areas of the heat exchange tubes, and when a fluid passes through the liquid distribution openings, the fluid resistance is relatively high, so that the fluid is uniformly distributed in the liquid inlet cavity, the fluid pressure at all parts in the space of the liquid inlet cavity is fully balanced, and the fluid is uniformly distributed in all the heat exchange tubes of the shell and tube heat exchanger; and through the liquid distribution device, the heat exchange capacity of the heat exchange tubes is fully utilized, and the heat exchange efficiency of the shell and tube heat exchanger is improved.

Description

technical field [0001] The invention relates to the technical field of heat exchange equipment, in particular to a shell-and-tube heat exchanger and a liquid separating device thereof. Background technique [0002] Under the promotion of the concept of energy saving and environmental protection, the country has higher and higher energy-saving requirements for power-consuming products, and higher and higher standards for the coefficient of performance of air-conditioning products. [0003] Shell and tube heat exchangers are widely used in air conditioning equipment. Taking the dry evaporator in the shell-and-tube heat exchanger as an example, the fluid formed by the refrigerant enters the liquid inlet chamber formed by the tube box at the front of the shell-and-tube heat exchanger, and then enters the heat exchange tubes arranged on the tube plate. Since the fluid enters the liquid inlet chamber through the liquid inlet pipe, the fluid preferentially enters the nozzle of the...

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Problems solved by technology

Since the fluid enters the liquid inlet chamber through the liquid inlet pipe, the fluid preferentially enters the nozzle of the heat exchange tube close to the liquid inlet pipe in the liquid inlet chamber, while the fluid at the nozzle of the heat exchange tube far away from the liquid inlet pipe is less, so that the fluid cannot Evenly distributed in each heat exchange tube in the shell and tube heat exchanger, which affects the heat exchange efficiency

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