JPH0272883U

JPH0272883U -

Info

Publication number: JPH0272883U
Application number: JP15183388U
Authority: JP
Priority date: 1988-11-24
Filing date: 1988-11-24
Publication date: 1990-06-04

Description

[Brief explanation of the drawing]

第１図は本考案に係わる機器メンテナンス用ド
アバルブの一実施例を示す縦断側面図、第２図は
その要部を示す拡大縦断側面図、第３図はＡｒガ
スの置換範囲を示す説明図、第４，５図は従来の
機器メンテナンス用ドアバルブを示す縦断側面図
である。１……ドアバルブ本体、２……横行部材、３…
…横行部材２の横行用ボールねじ、４……上ドア
兼キヤスク下蓋、５……下ドア（ポンプフランジ
孔蓋）、６……ジヤバラ状シール部材、７……メ
ンテナンスキヤスク、８……吊具、９……１次主
循環ポンプ（ＦＢＲ発電所のＮａ機器）のケーシ
ング、９ａ……ケーシング９のポンプフランジ、
９ｂ……１次主循環ポンプのインナアツセンブリ
、９ｃ……インナアツセンブリ９ｂのポンプフラ
ンジ、１０……コンクリート床板、１２……上ド
ア兼キヤスク下蓋用昇降装置）、１３……昇降ド
ラム、１４……吊下用ロープ、１５……Ａｒガス
・空気置換装置、１６……上ドア兼キヤスク下蓋
固定装置。 FIG. 1 is a vertical sectional side view showing an embodiment of the door valve for equipment maintenance according to the present invention, FIG. 2 is an enlarged vertical sectional side view showing the main parts thereof, and FIG. 3 is an explanatory diagram showing the replacement range of Ar gas. 4 and 5 are longitudinal sectional side views showing a conventional door valve for equipment maintenance. 1...Door valve body, 2...Transverse member, 3...
...Ball screw for traversing of the traversing member 2, 4...Upper door/cask lower cover, 5...Lower door (pump flange hole cover), 6...Rolled seal member, 7...Maintenance cask, 8... Hanging tool, 9... Casing of primary main circulation pump (Na equipment of FBR power plant), 9a... Pump flange of casing 9,
9b...Inner assembly of the primary main circulation pump, 9c...Pump flange of the inner assembly 9b, 10...Concrete floor plate, 12...Elevating device for upper door and lower cask lid), 13...Elevating drum, 14... Hanging rope, 15... Ar gas/air displacement device, 16... Upper door/cask lower lid fixing device.

Claims

[Scope of utility model registration request]

An upper opening and a lower opening are provided in the upper and lower parts of one side of the door valve body formed in a box shape, and the transverse member is placed in the door valve body in a forward position facing each of the openings and a backward position in which it is retreated from the forward position. A door valve for equipment maintenance in which a bellows-shaped seal member is installed in a hanging state around the lower opening of the door valve body,
A door valve for equipment maintenance, characterized in that the transverse member is provided with an elevating device for the upper door and lower cask lid, and an elevating device for the lower door consisting of an elevating drum and a hanging rope extending downward from the elevating drum. .