Flute-shaped current equalizer applied for uniformly distributing two-phase flow of header branch pipe

Abstract

The invention discloses a uniformly distributed flute-shaped current equalizer applied for uniformly distributing two-phase flow of a header branch pipe, belonging to the range of homogeneous phase distribution device of two-phase flow in a header. A concentric flute-shaped tube is arranged in the header, a lead-in tube is introduced from the radial direction of a header main body to be connected with the flute-shaped tube or from the axial direction of the header main body to be connected with the flute-shaped tube; and the pressure of all positions of fluid in the header main body is guaranteed to be basically consistent, and therefore, the flow rate of the fluid flowing into the branch pipe is basically the same, thus greatly improving the two-phase flow rate distribution characteristic in the header branch pipe, and achieving the purpose of uniform distribution of two-phase flow rate. The flute-shaped current equalizer has lower manufacturing cost and simple installation.

Description

technical field [0001] The invention belongs to the scope of a two-phase flow homogeneous distribution device in a header, and particularly relates to a flute-shaped flow equalizer applied to the uniform distribution of two-phase flow in a branch pipe of a header Background technique [0002] In the fields of power plant boilers, condensation systems, nuclear power evaporation systems, automotive air conditioners, and compact heat exchangers, there are generally engineering problems that two-phase fluids are distributed to the heating surfaces of parallel branch pipes through headers. How to ensure that the two-phase fluids Achieving even distribution to branch pipes is a problem encountered in header design. The distribution of the various headers currently used in the case of two-phase flow is very uneven, and the two-phase distribution in each branch pipe varies greatly. The structure is as follows figure 1 , figure 2 as shown, figure 1 Among them, the branch pipe 2 i...

AI Technical Summary

Problems solved by technology

The distribution of the various headers currently used in the case of two-phase flow is very uneven, and the two-phase distribution in each branch pipe varies greatly. The structure is as follows figure 1 , figure 2 as shown, figure 1 Among them, the branch pipe 2 is connected to the main body of the header 1, and the introduction pipe 3 is axially fixed on the main body 1 of the header by the flange 4, figure 2 Shown is that the introduction pipe 3 is introduced radially from the header body 1; image 3 It is now commonly used to install an accelerating tube 5 at the inlet of the header to improve the distribution of the two-phase flow

However, it will cause the pressure drop of the system to increase, and this method is mainly used in headers with axial inlets. The structure is as follows figure 2 Shown has limited effect on the distribution of two-phase flows for radial inlet header branch pipes

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