JPS61125745U

JPS61125745U -

Info

Publication number: JPS61125745U
Application number: JP793585U
Authority: JP
Priority date: 1985-01-25
Filing date: 1985-01-25
Publication date: 1986-08-07

Description

[Brief explanation of the drawing]

第１図ａは、本考案に係る一実施例の蒸気サン
プリングノズルの取付け状態を示す断面図、第１
図ｂは、そのＡ―Ａ矢視断面図、第２図ａは、従
来の蒸気サンプリングノズルの取付け状態を示す
断面図、第２図ｂは、Ｂ部拡大図である。図面中、０１，１は主蒸気管、０１ａ，１ａは
蒸気サンプリングノズル挿入口、０２，２は蒸気
、０３，３は蒸気取入れ孔、０４，４はねじ部、
０４ａは雌ねじ部、０４ｂは雄ねじ部、０５，５
はサンプリングノズル用座、０６，６は蒸気サン
プリングノズル本体、０７は異材溶接継手、７及
び０９，９は同材溶接継手部、０８はき裂、６ａ
はＣｒメツキ被覆層、６ｂは低合金鋼管、６ｃは
蒸気サンプリングノズル本体先端部である。 FIG. 1a is a cross-sectional view showing the installed state of a steam sampling nozzle according to an embodiment of the present invention;
FIG. 2b is a sectional view taken along the line A--A, FIG. 2a is a sectional view showing a conventional steam sampling nozzle installed, and FIG. 2b is an enlarged view of part B. In the drawing, 01, 1 is the main steam pipe, 01a, 1a is the steam sampling nozzle insertion port, 02, 2 is the steam, 03, 3 is the steam intake hole, 04, 4 is the threaded part,
04a is female threaded part, 04b is male threaded part, 05,5
is the seat for the sampling nozzle, 06, 6 is the steam sampling nozzle body, 07 is the welded joint of different materials, 7 and 09, 9 are the welded joints of the same material, 08 is the crack, 6a
6b is a low-alloy steel pipe, and 6c is the tip of the steam sampling nozzle body.

Claims

[Scope of utility model registration request]

In order to extract a portion of the steam from the inside of the tube made of low alloy steel through which the steam passes, a seat made of low alloy steel is fixed to the tube, and a tip is inserted into the tube through the seat and the tip is inserted into the tip. In a steam sampling nozzle having a steam sampling nozzle body configured to take in steam through a steam intake port, which is a hole provided therein, a portion of the steam sampling nozzle body that is in contact with the sampling steam is plated with Cr. A steam sampling nozzle characterized in that a portion that is covered and welded to the seat on the outside of the steam sampling nozzle main body is made of the same material or low alloy steel of the same type as the seat.