Thermal mixing heat network heater

Abstract

The invention belongs to the field of manufacture of heat exchange devices, and particularly relates to a heat mixing heater for a heating network. The heater is particularly suitable for heating various large steam-water and water-water heat transfer heating networks. The heater for the heating network comprises a left tube box, a right tube box, a tube plate shell seam and a tube bundle, the tube plate shell seam is arranged between the left tube box and the right tube box, and the tube bundle is arranged inside the tube plate shell seam. The heater is characterized in that the tube bundle is divided into three areas including a low-resistance area, a high-resistance area and a transition area, the low-resistance area is close to the upper end and the lower end of a shell, the high-resistance area is close to a tube bundle center line, the transition area is arranged between the high-resistance area and the low-resistance area, and the three areas are vertically and symmetrically are arranged relative to an X axis of the horizontal center line. Heat exchange efficiency is high, pressure loss does not exceed a standard, and the best point for balancing pressure drop and efficiency is achieved.

Description

technical field [0001] The invention belongs to the field of heat exchange equipment manufacturing, and specifically relates to a heat-mixing heat network heater, which is especially suitable for heating various large-scale steam-water and water-water heat transfer heat networks. Background technique [0002] At present, it is widely used in thermal power plants, and the heat exchange tubes of steam-water or water-water heating network heaters in urban central heating systems all use a single light tube or a single characteristic tube to improve heat transfer. The shortcomings of the heat network heater are obvious, which are manifested in: ①. The heat transfer efficiency of the bare tube heat network heater is low, the pressure loss is small (the allowable pressure loss cannot be fully utilized), and the heat exchange area required for the same working condition is large, accounting for The ground space is relatively large; ②, the characteristic tube heating network heater ...

AI Technical Summary

Problems solved by technology

[0002] At present, it is widely used in thermal power plants, and the heat exchange tubes of steam-water or water-water heating network heaters in urban central heating systems all use a single light tube or a single characteristic tube to improve heat transfer. The shortcomings of the heat network heater are obvious, which are manifested in: ①. The heat transfer efficiency of the bare tube heat network heater is low, the pressure loss is small (the allowable pressure loss cannot be fully utilized), and the heat exchange area required for the same working condition is large, accounting for The ground space is relatively large; ②, the heat transfer efficiency of the characteristic tube heating network heater is high, but the pressure loss is too large

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