Flat spiral tubular heat exchanger

Abstract

The invention discloses a flat spiral tubular heat exchanger. The flat spiral tubular heat exchanger comprises a barrel type shell, a cylindrical inner core, a medium inlet, a medium outlet and stepped hollow end heads, wherein the medium inlet and the medium outlet are formed in the barrel type shell, and the stepped hollow end heads are installed at the two ends of the barrel type shell. The inlet is formed in one stepped hollow end head, and the outlet is formed in the other stepped hollow end heads. Threads are arranged on first steps and second steps of the stepped hollow end heads. The cylindrical inner core is composed of two round end plates and a plurality of flat spiral tubes which are fixed between the two end plates. The two ends of each flat spiral tube are cylindrical, and the length of the two ends of each flat spiral tube is larger than the thickness of the round end plates. Threads matched with the first steps of the hollow stepped end heads are arranged on the surfaces of the round end plates, and external threads matched with the second steps of the stepped hollow end heads are arranged at the two ends of the barrel type shell. According to the flat spiral tubular heat exchanger, the stepped hollow end heads are adopted, and the threads are additionally arranged in the stepped hollow end heads, so that the stepped hollow end heads are connected with the inner core and the barrel type shell in a sealing mode through the threads, assembly is easy, and machining is convenient.

Description

technical field [0001] The invention relates to a heat exchanger device used for heat exchange in the chemical industry, in particular to a flat spiral tube heat exchanger. Background technique [0002] Heat exchanger devices are widely used in the chemical industry, mainly for heat exchange between different media. Traditional heat exchangers are mostly shell-and-tube heat exchangers, and their disadvantage is that the circulating medium needs to have a high degree of purity, otherwise it is easy to cause blockage. The Chinese patent authorization number CN201740434U discloses a spiral plate heat exchanger. The metal plates are arranged in a spiral shape from the inside to the outside. On the one hand, the distance between the metal plates will be inconsistent, which will affect the heat exchange efficiency. On the other hand, the metal plates will be corroded, resulting in medium leakage, which will affect the use effect and service life of the equipment. Contents of th...

AI Technical Summary

Problems solved by technology

Traditional heat exchangers are mostly shell-and-tube heat exchangers, and their disadvantage is that the circulating medium requires high purity, otherwise it is easy to cause blockage

The Chinese patent authorization number CN201740434U discloses a spiral plate heat exchanger. The metal plates are arranged in a spiral shape from the inside to the outside. On the one hand, the distance between the metal plates will be inconsistent, which will affect the heat exchange efficiency; on the other hand, the metal plates will be corroded, resulting in medium leakage, which will affect the use effect and service life of the equipment

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