Air cooling type tube bundle of heat exchanger

Abstract

The invention discloses an air cooling type tube bundle of a heat exchanger. The air cooling type tube bundle comprises an inlet manifold, an outlet manifold, finned tubes, a U-shaped tube, a flange and a connecting tube, and is characterized by being provided with a support steel plate, an outlet fixing clamp, an inlet fixing clamp, fixing clamps, a first straight tube connecting flexible sleeve and a second straight tube connecting flexible sleeve; the U-shaped tube adopts a U-shaped hose; the adjacent finned tubes are connected though supporting of the support steel plate and are in end-to-end sleeving joint through the U-shaped hose; the U-shaped hose is fixedly connected with the finned tubes through the fixing clamps as well as fixing bolts and nuts on the fixing clamps. The air cooling type tube bundle of the heat exchanger has the advantages that detachable connection is realized, the cost is low, a manufacture process is energy-saving and environment-friendly, the manufacture cost, the use cost and the maintenance cost of an air cooler are reduced on the whole and the like.

Description

technical field [0001] The invention relates to the technical field of heat exchange equipment, in particular to a tube bundle of an air-cooled heat exchanger. Background technique [0002] At present, there are generally two structural forms of air cooler tube bundles. One is tube box type air cooler. The tube box type air cooler is composed of finned tubes and tube boxes. Tube boxes are respectively provided, and the tube boxes are connected with rows of finned tube boxes, and connecting flanges are provided on the tube boxes, and the tube boxes play the role of connecting each finned tube, and the finned tubes are welded, expanded Connect or weld and expand the way to connect with the pipe box; the other is the header air cooler, which is composed of finned tubes, U-shaped tubes and headers. The role of finned tubes, finned tubes, headers, and U-shaped tubes are directly connected by welding; these two structural forms have certain limitations. The expansion and welding...

AI Technical Summary

Problems solved by technology

[0002] At present, there are generally two structural forms of air cooler tube bundles. One is tube box type air cooler. The tube box type air cooler is composed of finned tubes and tube boxes. Tube boxes are respectively provided, and the tube boxes are connected with rows of finned tube boxes, and connecting flanges are provided on the tube boxes, and the tube boxes play the role of connecting each finned tube, and the finned tubes are welded, expanded Connect or weld and expand the way to connect with the pipe box; the other is the header air cooler, which is composed of finned tubes, U-shaped tubes and headers. The role of finned tubes, finned tubes, headers, and U-shaped tubes are directly connected by welding; these two structural forms have certain limitations. The expansion and welding connection methods used between the finned tubes and the connecting parts are not removable. After the air cooler runs for a period of time, there will be sundries entering the fin gaps of the finned tubes, which will seriously affect the heat exchange effect. Finned tubes may leak after long-term use, and this non-detachable structure cannot be cleaned when debris enters the gaps in the finned tubes, nor can it be cleaned when a single or several finned tubes leak. For partial replacement, only the entire tube bundle can be replaced, resulting in great waste; tube box tube bundle, each tube box is made of 6 steel plates with a thickness of at least 16mm welded, the amount of steel plates is large, the structure is heavy, and welding The workload is heavy, which leads to high cost, long construction period, heavy labor load, and serious environmental pollution; the use of manifold tube bundles, manifolds and steel U-shaped tubes saves steel compared with tube boxes, reduces structural weight, and reduces However, in the header structure, the welding of finned tubes, U-shaped tubes and headers must be completed within a small operating gap, the welding work is difficult, and the welding quality is difficult to guarantee. Each finned tube Both the U-shaped pipe and the U-shaped pipe form a butt weld, the number of welds is large, and the high-cost and heavy-workload radiographic inspection method must be used. The non-destructive inspection workload is large, resulting in high overall cost, long construction period, difficult work, and heavy workload. Large, and the product quality is not stable

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