JPH0272302U

JPH0272302U -

Info

Publication number: JPH0272302U
Application number: JP15234388U
Authority: JP
Priority date: 1988-11-22
Filing date: 1988-11-22
Publication date: 1990-06-01

Description

[Brief explanation of drawings]

第１図は本考案の一実施例を示すローターの全
体縦断面図、第２図は第１図の部を示す部分拡
大図、第３図は第２図の変形例を示す同じく部分
拡大図である。第４図は公知の蒸気タービンロー
ターの表面温度計測熱電対取付構造を示す説明図
、第５図は本出願人が最近提案した蒸気タービン
ローターの表面温度計測熱電対取付構造を示すロ
ーター全体縦断面図、第６図は第５図の部分拡大
図である。１……ローター、２……中心孔、３，３ａ……
細孔、４……熱電対、５……温度計測穴、６……
軸端部、７……つば、８，８ａ，８ｂ，８ｃ……
プラグ、９……パツキン、１０……座、１１……
保護筒、１２……シール溶接、１３……凹穴、１
４……パツキン、１５……ねじ蓋、１６……シー
ル溶接。 Fig. 1 is an overall vertical sectional view of a rotor showing an embodiment of the present invention, Fig. 2 is a partially enlarged view showing the part shown in Fig. 1, and Fig. 3 is a partially enlarged view showing a modification of Fig. 2. It is. FIG. 4 is an explanatory diagram showing a known mounting structure for surface temperature measuring thermocouples on a steam turbine rotor, and FIG. 5 is a longitudinal section of the whole rotor showing a mounting structure for surface temperature measuring thermocouples on a steam turbine rotor recently proposed by the present applicant. 6 is a partially enlarged view of FIG. 5. 1... Rotor, 2... Center hole, 3, 3a...
Pore, 4...Thermocouple, 5...Temperature measurement hole, 6...
Shaft end, 7...Brim, 8, 8a, 8b, 8c...
Plug, 9... Patsukin, 10... Seat, 11...
Protection tube, 12... Seal welding, 13... Recessed hole, 1
4...Packing, 15...Screw cap, 16...Seal welding.

Claims

[Scope of utility model registration request]

A pore is drilled in the rotor center hole, the inner end of which is open and the outer end is open to the outer periphery of the rotor, a thermocouple sheath wire is introduced through the rotor center hole and the pore, and its tip is connected to the outer end of the pore. In the rotor surface temperature measurement thermocouple mounting structure that is inserted into a temperature measurement hole provided in an opening, a cover plate is seal-welded to a relatively large diameter opening machined at the outer end of the pore. A rotor surface temperature measuring thermocouple mounting structure characterized in that the tip of the sheath wire is shielded from high temperature and high pressure steam.