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Collection system for the mechanical cleaning of heat exchanger tubes

一种热交换器、管道的技术，应用在清理热交换器管道的装置领域，能够解决吸入集管难安装等问题

Inactive Publication Date: 2005-04-20
ATOMIC ENERGY OF CANADA LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The suction header is also difficult to install

Method used

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  • Collection system for the mechanical cleaning of heat exchanger tubes
  • Collection system for the mechanical cleaning of heat exchanger tubes
  • Collection system for the mechanical cleaning of heat exchanger tubes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] Referring to Figure 1, there is shown the hot leg side of a boiler chamber 2 of a steam generator casing. Although the invention has been described with reference to the hot leg side, those skilled in the art will appreciate that the invention is equally applicable to the cold leg side of the boiler chamber of a steam generator casing. The boiler chamber 2 is formed by a primary heater (bowl) 4 forming a chamber delimited at the upper end by a tube sheet 6 in which openings for steam generator pipes 7 are provided (Fig. Only three are shown). The partition plate 5 divides the chamber 2 into a hot branch pipe and a cold branch pipe. The primary nozzle 3 enters the boiler chamber 2 through the primary heater 4 . Manways 10 are formed in the primary heater 4 to allow access to the boiler chamber 2 .

[0028] The manway 10 is sealed off by a through-hole cover 16 . The manway cover 16 is held in place by brackets 17 and shafts 18 . A bracket 17 bridges between the oute...

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PUM

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Abstract

Apparatus for cleaning heat exchanger tubes, in particular an improved collection system for cleaning, blasting media and deposition material for atomic generators. A suction duct with a downwardly directed suction inlet can be effectively used for suctioning medium and waste floating in the air in the chamber, as well as suctioning deposits on the bottom of the chamber below the suction inlet. media and waste. A hopper, air nozzle and vibrator unit is provided to convey the deposited medium to the suction inlet. Provide shredders and isolators to reduce back flow of waste into heat exchanger tubes.

Description

technical field [0001] The present invention relates to an apparatus for cleaning heat exchanger tubes and more particularly to an improved collection system for cleaning and blasting media and deposition material for atomic steam generators. Background technique [0002] During the operation of nuclear power plants, ferromagnetic corrosion products generated by carbon steel elements in the primary heat transfer system deposit on the steam generator tube walls. The role of the steam generator is to generate steam to drive a turbine that generates electricity. Deposits on the steam generator tube walls have a detrimental effect on heat transfer and flow, reducing the performance of the steam generator. Since the solubility of iron decreases with temperature, ferromagnetic buildup is usually highest on the cold leg side of the pipe because of the lower temperature in that region. If these ferromagnetic deposits are not removed, they will eventually lead to reduced efficiency...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28G1/12F22B37/00F22B37/48F28G9/00F28G13/00F28G15/00
CPCF22B37/003F22B37/483F28G9/00F28G15/00F28G13/00
Inventor 伯纳德·A·马贾雷斯诺曼·科里尔弗兰克·卡姆勒纳林德·贝恩斯戴维·斯科特
Owner ATOMIC ENERGY OF CANADA LIMITED