A high-efficiency and vibration-free air-water heat exchanger

Abstract

The invention discloses a high-efficiency vibration-free gas-water heat exchanger. The high-efficiency vibration-free gas-water heat exchanger comprises a barrel. The barrel is provided with a coolingwater inlet, a cooling water outlet, a gas inlet and a gas outlet. A cooling core is mounted in the barrel. The two ends of the cooling core are provided with tube plates used for fixing the coolingcore. The two tube plates divides the internal space of the barrel into three areas, wherein the area between the two tube plates belongs to the heat exchange area, and a heat exchange flat partitionplate is arranged in the heat exchange area; the heat exchange flat partition plate divides the heat exchange area into an upper heat exchange area and a lower heat exchange area; and the heat exchange flat partition plate is provided with notches communicating the upper heat exchange area with the lower heat exchange area. The high-efficiency vibration-free gas-water heat exchanger adopts the multi-shell-pass and multi-tube-pass structural style, increases the flow velocity of shell pass gas and tube pass cooling water, can improve the heat exchange efficiency and reduce consumption of cooling water, changes the shell pass gas from traditional transverse scouring to longitudinal flowing, reduces gas-side resistance, improves the compressor efficiency, eliminates causes of vibration and improves the safety of a compressor set.

Description

technical field [0001] The invention relates to the technical field of heat exchangers, in particular to an efficient and vibration-free air-water heat exchanger. Background technique [0002] As an important supporting equipment in the compressor system, the interstage cooler is widely used in petrochemical, air separation, metallurgy, power and other fields. The interstage cooler is an air-water heat exchanger. According to the theoretical analysis of heat transfer, in the heat exchange process, the heat transfer film coefficients on both sides of the air and water are quite different, and the main heat transfer resistance of the interstage cooler is Concentrate on the gas side. In order to strengthen the heat transfer on the gas side, two methods can be used: increasing the gas flow rate and passing fins outside the tube, but the overall cost performance of these two methods is not high. First, in order to ensure the efficiency of the compressor, the pressure drop on th...

AI Technical Summary

Problems solved by technology

First, in order to ensure the efficiency of the compressor, the pressure drop on the gas side is strictly required. In the traditional straight tube baffle type interstage cooler, when the flow rate on the gas side increases, the pressure drop on the shell side rises rapidly, causing the compressor The power consumption increases, and the second is that the method of piercing the fins outside the tube has more consumables, the manufacturing process is complicated, and the cost is high, and the fins are easy to loosen and corroded, which all affect the heat transfer performance of the interstage cooler

In addition, because the airflow pulsation and instability often exist in the exhaust of the compressor, when the gas is used to flush the heat exchange tube bundle horizontally, it is easy to induce the heat exchange tube bundle to vibrate violently, the noise is large, and there are potential safety hazards

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