Liquid division type double-pipe condenser

Abstract

The invention relates to a liquid distribution type casing pipe condenser, belonging to the heat equipment technology field, which comprises a cooling water inlet (1), a first stage header (2), a condenser steam inlet (3), a last stage header (5), a cooling water outlet (6) and an internal pipe (12), wherein the two ends of the internal pipe (12) are connected with a water (steam) collecting head (4), the condenser steam inlet (3) is connected with the first stage header (2) and connected with a second stage header (9) through a first group heat exchange casing pipe (11) and the water (steam) collecting head (4) of the two ends of the first group heat exchange casing pipe, the second stage header (9) is communicated with a next stage header through the other group heat exchange casing pipe (11) and the water (steam) collecting head (4) of the two ends of the other group heat exchange casing pipe; ellipsis; until the last stage header (5). The invention effectively reduces the liquid film thickness and the adverse two-phase flow pattern in the condensation process, increases the heat exchange effect of film condensation, improves the condensation heat exchange coefficients in the pipe and the performance, saves materials, simplifies processing, and reduces the manufacturing and operating cost of the condenser.

Description

technical field [0001] The invention relates to a liquid-splitting casing condenser, which belongs to the technical field of thermal equipment. Background technique [0002] The sleeve condenser is a kind of thermal equipment, which is widely used in power, chemical industry, air-conditioning engineering and refrigeration engineering, such as refrigerators, freezers, and air-conditioning systems. [0003] Figure 1 shows a conventional sleeve condenser, which consists of a concentric inner tube and an outer tube. As shown in Figure 1, Figure (a) is a top view of a traditional sleeve condenser; Figure (b) is a side view of a traditional sleeve condenser. Among them, 100-refrigerant steam inlet, 200-cooling water outlet, 300-refrigerant condensate outlet, 400-cooling water inlet, 500-outer casing. In order to save space, the traditional sleeve condenser adopts a spiral arrangement, relying on the convective heat exchange between the cooling water in the gap between the sleeve...

AI Technical Summary

Problems solved by technology

During the condensation process, the liquid film gradually thickens, and in the long-term later, it will be a complex two-phase flow in which the liquid gradually increases, the thermal resistance will gradually increase, and the condensation effect will deteriorate seriously; at the same time, with the condensation of the steam, the amount of steam will gradually decrease. The steam flow rate in the tube drops significantly, the condensation effect degrades sharply, and the heat transfer coefficient decreases; the condensation process in a single tube process also leads to complex gas-liquid two-phase flow, which has great impact on system operation stability, flow resistance and system regulation. negative effect

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