Pass partition plate, heat exchanger pipe box, heat exchanger and manufacturing method thereof

Abstract

The invention discloses a pass partition plate, a heat exchanger pipe box, a heat exchanger and a manufacturing method thereof. One end of the pass partition plate is arc and can be attached to the inner wall of a sealing head, a notch is formed in at least one side of the other end of the pass partition plate, sufficient space is guaranteed for barrel and equipment flange ring seam RT flaw detection, 100% RT flaw detection of a welding seam can be achieved, the product quality is guaranteed, and multiple functions are achieved.

Description

technical field [0001] The invention relates to a split-pass separator, a heat exchanger pipe box, a heat exchanger and a manufacturing method thereof. Background technique [0002] Heat exchangers, especially small-diameter heat exchanger tube boxes, usually need to be welded with T-type or I-type split-pass partitions, as shown in Figure 1 (a) and Figure 1(b). The space formed by the body is divided into multiple independent spaces to ensure that the fluid or gas in each tube will not flow in series to achieve the effect of heat exchange. [0003] The existing split-pass separator welding methods include the following two types: [0004] The first option: After the welding flaw detection of the head, cylinder body and equipment flange is completed, the welding of the split partition is carried out; [0005] The second solution: weld the head and the partition plate first, and then gradually weld the cylinder and the head after the welding is completed, and install the fl...

AI Technical Summary

Problems solved by technology

[0006] However, through practice, there are problems in the above two existing schemes. First of all, for the first scheme, when the diameter of the tube box is small and the length of the tube box is long, for example, the tube diameter is ≤300mm, and the length of the tube box is > 300mm; or 300 450mm, etc., when welding the split-pass partition, there will be situations where the split-pass partition and the shell cannot be welded or the quality of the welding cannot be guaranteed

[0007] Secondly, for the second solution, because the split-pass partition and the head are welded first, the split-pass partition will hinder the RT flaw detection of the circular seam of the shell, and the circular seam cannot achieve 100% RT flaw detection, and the non-destructive flaw detection cannot be performed well.

[0008] To sum up, there is a problem in the prior art that the welding quality of the split-pass partition is inconsistent with the realization of 100% RT flaw detection of the circular seam. Based on this problem, the present invention provides a split-pass partition, heat exchanger tube box, heat exchanger and its manufacturing method

Images