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A cover-type sealing device for opening holes in tube bundle sleeves

A tube bundle sleeve and sealing device technology, which is applied in the field of nuclear reactors, can solve the problem of high machining accuracy and achieve the effects of strong adaptability, convenient opening and closing operation, and stable performance

Active Publication Date: 2016-08-03
NUCLEAR POWER INSTITUTE OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The structure of this scheme is relatively simple, but the requirements for machining accuracy are relatively high

Method used

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  • A cover-type sealing device for opening holes in tube bundle sleeves
  • A cover-type sealing device for opening holes in tube bundle sleeves
  • A cover-type sealing device for opening holes in tube bundle sleeves

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Embodiment Construction

[0025] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0026] Such as figure 1 As shown, the steam generator heat exchange tube bundle 10 is located in the tube bundle sleeve 8, and the tube bundle sleeve 8 is located in the steam generator cylinder 7. Due to the need for later maintenance, the steam generator tube bundle sleeve 8 is provided with a tube bundle sleeve Opening 1, but during normal operation, the secondary side coolant flows from steam generator cylinder opening 9 to steam generator cylinder 7. At this time, the tube bundle sleeve opening 1 needs to be sealed; it needs to be opened for later maintenance.

[0027] The invention relates to a cover plate type sealing device for the opening of the tube bundle sleeve, which is used for sealing the sleeve opening 1 of the tube bundle sleeve during the operation of the equipment, and at the same time, it can be conveniently reopened durin...

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PUM

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Abstract

The invention belongs to the field of nuclear reactors and particularly relates to a cover-plate seal device for a tube bundle sleeve open pore. The seal device is arranged at the tube bundle sleeve open pore and comprises a flange coaxial with the tube bundle sleeve open pore, a sliding groove structure arranged at the outer side of the flange and extending from the top to the bottom and a retaining plate in sliding fit with the sliding groove structure. The retaining plate is provided with a face close to the tube bundle sleeve and a position covering the flange outer end surface completely during sliding, and the face is in friction contact with the flange outer end surface at the position. The seal device enables opening and closing of the tube bundle sleeve open pore to be convenient to operate and is easy to fabricate, stable in utilization performance, high in adaptability and capable of being flexibly applied to open pores of various specifications of tube bundle sleeves.

Description

technical field [0001] The invention belongs to the field of nuclear reactors, and in particular relates to a cover plate type sealing device for opening holes in a tube bundle sleeve on the secondary side of a steam generator in a pressurized water reactor nuclear power plant. Background technique [0002] In a typical vertical natural circulation steam generator (hereinafter referred to as SG) of a pressurized water reactor nuclear power plant, in order to separate the descending liquid from the ascending steam to improve the steam quality, a tube bundle sleeve structure is arranged outside the tube bundle. At the same time, in order to realize equipment inspection and maintenance, it is necessary to set holes on the SG cylinder and the tube bundle sleeve at the corresponding position. The opening of the tube bundle sleeve is in conflict with the isolation of the descending liquid and steam. It is necessary to add a tube bundle sleeve opening cover assembly to seal the sle...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16J15/00
Inventor 李冬慧何戈宁余平何劲松
Owner NUCLEAR POWER INSTITUTE OF CHINA