All-bearing baffle plate device of dry type evaporator and using method

Abstract

The invention relates to an all-bearing baffle plate device of a dry type evaporator and a using method. An existing baffle plate device at present is in a semi-bearing structure form for an evaporating pipe bundle, a bearing span distance is larger, and serious vibration is easily caused. The all-bearing baffle plate device is formed by an all-bearing baffle plate, a correlated pipe plate and the evaporating pipe bundle. The flow speed of a cool-carrying agent is fully increased due to the all-bearing baffle plate device in an evaporator cylinder, the all-bearing form is effectively realized by the evaporating pipe bundle, the bearing span distance is effectively reduced by half, the vibration of the evaporating pipe bundle is prevented, and the heat transfer performance of the evaporator is effectively increased. The all-bearing baffle plate device disclosed by the invention has the advantages that the all-bearing baffle plate of which the outer circle is provided with a thin-edge and flat-surface-shaped notch round plate is adopted, the energy efficiency of the all-bearing baffle plate device is 15%-20% higher than that of the existing baffle plate device, and the all-bearing baffle plate device is an energy-saving device which is simple in structure, good in sealing performance, convenient to manufacture and install and low in processing cost and is capable of effectively preventing the vibration of the evaporating pipe bundle.

Description

technical field [0001] The invention relates to a baffle device in an evaporator, in particular to a fully supported baffle device for a dry evaporator and a usage method. Background technique [0002] Refrigeration and air conditioning are widely used in daily life. The shell-and-tube dry evaporator is the main part of the refrigeration system. It is composed of a cylinder, an evaporating tube bundle, a baffle, a tube sheet at both ends, a split tube box, a support and corresponding connecting pipes. The flow rate of the brine and the support form of the baffle will directly affect the performance of the dry evaporator and the vibration cracking of the evaporator tube bundle. [0003] In the refrigeration process of the dry evaporator, the currently commonly used baffle form still has the following defects: 1) Due to the increase of the flow rate of the refrigerant in the cylinder of the dry evaporator, the evaporator tube bundle is impacted by the fluid, resulting in Sev...

AI Technical Summary

Problems solved by technology

[0003] In the refrigeration process of the dry evaporator, the commonly used baffle form still has the following defects: 1) Due to the increase of the flow rate of the refrigerant in the cylinder of the dry evaporator, the evaporator tube bundle is impacted by the fluid, resulting in Severe flow velocity vibration and frequency vibration lead to vibration and cracking of the evaporator bundle; 2) The existing baffles are semi-supported to the evaporator bundle, and these baffle devices have a large support span in the length direction of the evaporator bundle , prone to severe vibration, the brine can only achieve a low flow rate, resulting in a decrease in the heat transfer performance of the dry evaporator, resulting in high processing costs, uneconomical, and energy-saving

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