A counterflow spiral baffle U-shaped tube bundle heat exchanger

A technology of helical baffles and baffles, applied in the direction of heat exchanger types, heat exchanger shells, indirect heat exchangers, etc., can solve the problem of neglecting pipe penetration, and achieve the effect of easy installation and fixation and inhibiting reverse leakage.

Active Publication Date: 2017-11-03
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But this invention has ignored the problem of how to realize the pipe penetration

Method used

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  • A counterflow spiral baffle U-shaped tube bundle heat exchanger
  • A counterflow spiral baffle U-shaped tube bundle heat exchanger
  • A counterflow spiral baffle U-shaped tube bundle heat exchanger

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Embodiment

[0019] A counterflow spiral baffle U-shaped tube bundle heat exchanger, composed of a U-shaped tube bundle core 1, a shell 2 with flanges 2-3 and a water chamber 3; the shell 2 is close to the flange 2 -3 The inlet 2-1 of the shell side fluid and the outlet 2-2 of the shell side fluid are respectively arranged on the upper and lower half cylinders at one end, the water chamber 3 is divided into upper and lower spaces, and the water The outlet 3-2 of the tube side fluid and the inlet 3-1 of the tube side fluid are respectively arranged on the head of the chamber 3; the U-shaped tube bundle core 1 is composed of a U-shaped tube bundle 1-1 and a spiral baffle assembly 1-2 , tube plate 1-3, pull rod casing assembly 1-4, and longitudinal partition plate 1-5; one end of the longitudinal partition plate 1-5 in the length direction is connected to the tube plate, and the other end is close to the U-shaped tube bundle bend The pipe section is provided with sealing strips on both sides ...

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Abstract

A countercurrent spiral baffle U-shaped tube bundle heat exchanger, which is composed of a U-shaped tube bundle core, a shell and a water chamber; the U-shaped tube bundle core is composed of a U-shaped tube bundle, a spiral baffle assembly, a tube plate, It is composed of tie rod sleeve assembly and longitudinal partition plate; the spiral baffle assembly is composed of a set of flat circular baffles and a set of inclined sections and left and right folded flat sections in the upper and lower semi-cylindrical regions. It is composed of arc-shaped end strip baffles; two sets of baffles are provided with an overlapping area of ​​a row of pipes. The present invention can overcome the structural limitation that the common spiral baffles are difficult to arrange in the semi-cylindrical space and many disadvantages of the arcuate baffle heat exchanger, and solves the problem of arranging the spiral baffle channels in the semi-cylindrical space to realize the U-shaped counterflow The tube bundle heat exchanger has the advantages of high heat transfer coefficient and small flow resistance.

Description

technical field [0001] The invention relates to a U-shaped tube bundle heat exchanger, in particular to a U-shaped tube bundle heat exchanger with a counterflow spiral baffle. Background technique [0002] U-shaped tube bundle heat exchanger is the main form of high temperature and high pressure heat exchanger. For example, the feedwater heater with U-shaped tube bundle is an important equipment in the power plant system. In particular, the high-pressure heater also has a built-in superheated steam cooling section and a drain cooling section in addition to the steam condensation section. Because the steam cooling section in the feedwater heater The cooling section and the hydrophobic cooling section are respectively located at the inlet and outlet sections of the U-shaped tube bundle, so countercurrent heat exchange must be performed. Most of the structures currently used are bow-shaped baffle channels, which have defects such as flow dead zone, low heat transfer coefficien...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28D7/06F28F9/24
Inventor 陈亚平王明超吴嘉峰
Owner SOUTHEAST UNIV
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