dry evaporator

Abstract

The invention discloses a dry evaporator, comprising a cylinder body and a tube sheet, and an antifreeze baffle plate assembly arranged in the cylinder body and close to the inner wall surface of the tube sheet; the antifreeze baffle plate assembly comprises a first antifreeze baffle plate connected in sequence A baffle, a liquid baffle and a second anti-freezing baffle, and the freezing nozzle of the cylinder is located in the space enclosed by the first anti-freezing baffle, the liquid baffle and the second anti-freezing baffle; the first anti-freezing baffle The second anti-freezing baffle is located on the side of the second anti-freezing baffle close to the tube sheet, the side of the first anti-freezing baffle close to the inner wall of the cylinder has a baffle gap; the side of the second anti-freezing baffle close to the inner wall of the cylinder is connected to the cylinder . The dry evaporator disclosed by the invention optimizes the path of the frozen water flowing near the tube sheet, effectively increases the flow rate of the frozen water flowing through the inner wall of the tube sheet, avoids the problem of freezing water in the area near the inner wall of the tube sheet, and effectively avoids the problem of freezing water in the area near the inner wall of the tube sheet. The situation of freezing and cracking of the district heat exchange tube improves the reliability of the dry evaporator.

Description

technical field [0001] The invention relates to the technical field of heat exchange equipment, in particular to a dry evaporator. Background technique [0002] In the dry evaporator, the path of the chilled water is adjusted by using the structure of the arcuate upper baffle and the lower baffle. However, in the actual operation process, the water velocity at the tube bundle on the inner wall of the tube sheet is slow; moreover, this area continues to exchange heat under the flow of refrigerant, which causes the water temperature in this area to continue to decrease until it freezes, and the heat exchange tube bundle is frozen. cracking hazard. After the heat exchange tube bundle is frozen and cracked, it is very easy to cause the refrigerant to leak to the water side, and the chilled water will also be poured into the heat exchange tube, which will damage the compressor unit, cause serious safety hazards, and reduce the reliability of the dry evaporator. [0003] Therefo...

AI Technical Summary

Problems solved by technology

However, in the actual operation process, the water flow rate at the tube bundle on the inner wall of the tube sheet is slow; moreover, this area continues to exchange heat under the flow of refrigerant, causing the water temperature in this area to continue to drop until it freezes, and the heat exchange tube bundle is frozen. Hidden danger of cracking

After the heat exchange tube bundle is frozen and cracked, it is very easy to cause the refrigerant to leak to the water side, and at the same time, the frozen water will also pour into the heat exchange tube, damaging the compressor unit, posing serious safety hazards and reducing the reliability of the dry evaporator.

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