Steam Turbine Seal Clearance Adjusting Method, And Steam Turbine

Abstract: This steam turbine is provided with: a rotating shaft which rotates about an axis; moving blades provided on an outer circumferential surface of the rotating shaft; a casing covering the rotating shaft and the moving blades from the outer circumferential side thereof; stationary blades provided on an inner circumferential surface of the casing; and a sealing device including a seal ring provided between the outer circumferential surface and the stationary blades, and a position adjusting unit capable of adjusting the radial direction position of the seal ring. The seal clearance adjusting method includes: a measuring step of measuring the length of the seal ring in the radial direction from a predetermined reference position, as a reference length; a preparation step of preparing an unused seal ring; and an adjusting step of adjusting the length of the unused seal ring from the reference position to obtain the reference length, by means of the position adjusting unit.

Patent Information

Application #

Filing Date

22 November 2021

Publication Number

41/2022

Publication Type

INA

Invention Field

MECHANICAL ENGINEERING

Status

Email

IPRDEL@LAKSHMISRI.COM

Parent Application

Patent Number

Legal Status

Grant Date

2024-01-03

Renewal Date

Applicants

MITSUBISHI HEAVY INDUSTRIES, LTD.

2-3, Marunouchi 3-Chome, Chiyoda-ku, Tokyo 1008332, Japan.

Inventors

1. MIZUMI Shunsuke

c/o MITSUBISHI HEAVY INDUSTRIES, LTD., 2-3, Marunouchi 3-Chome, Chiyoda-ku, Tokyo 1008332

2. KO Ketsu

c/o MITSUBISHI HEAVY INDUSTRIES, LTD., 2-3, Marunouchi 3-Chome, Chiyoda-ku, Tokyo 1008332

3. KODERA Juichi

c/o Mitsubishi Hitachi Power Systems, Ltd., 3-1, Minatomirai 3-Chome, Nishi-ku, Yokohama-shi, Kanagawa 2208401

4. KAYAHARA Masayuki

c/o Mitsubishi Hitachi Power Systems, Ltd., 3-1, Minatomirai 3-Chome, Nishi-ku, Yokohama-shi, Kanagawa 2208401

Specification

Documents

Application Documents

#	Name	Date
1	202147053684-TRANSLATIOIN OF PRIOIRTY DOCUMENTS ETC. [22-11-2021(online)].pdf	2021-11-22
2	202147053684-STATEMENT OF UNDERTAKING (FORM 3) [22-11-2021(online)].pdf	2021-11-22
3	202147053684-REQUEST FOR EXAMINATION (FORM-18) [22-11-2021(online)].pdf	2021-11-22
4	202147053684-POWER OF AUTHORITY [22-11-2021(online)].pdf	2021-11-22
5	202147053684-NOTIFICATION OF INT. APPLN. NO. & FILING DATE (PCT-RO-105-PCT Pamphlet) [22-11-2021(online)].pdf	2021-11-22
6	202147053684-FORM 18 [22-11-2021(online)].pdf	2021-11-22
7	202147053684-FORM 1 [22-11-2021(online)].pdf	2021-11-22
8	202147053684-DRAWINGS [22-11-2021(online)].pdf	2021-11-22
9	202147053684-DECLARATION OF INVENTORSHIP (FORM 5) [22-11-2021(online)].pdf	2021-11-22
10	202147053684-COMPLETE SPECIFICATION [22-11-2021(online)].pdf	2021-11-22
11	202147053684.pdf	2021-11-27
12	202147053684-Proof of Right [08-12-2021(online)].pdf	2021-12-08
13	202147053684-FORM 3 [14-04-2022(online)].pdf	2022-04-14
14	202147053684-PA [25-04-2022(online)].pdf	2022-04-25
15	202147053684-ASSIGNMENT DOCUMENTS [25-04-2022(online)].pdf	2022-04-25
16	202147053684-8(i)-Substitution-Change Of Applicant - Form 6 [25-04-2022(online)].pdf	2022-04-25
17	202147053684-FER.pdf	2022-10-18
18	202147053684-certified copy of translation [03-11-2022(online)].pdf	2022-11-03
19	202147053684-Information under section 8(2) [25-01-2023(online)].pdf	2023-01-25
20	202147053684-FORM 3 [25-01-2023(online)].pdf	2023-01-25
21	202147053684-OTHERS [22-02-2023(online)].pdf	2023-02-22
22	202147053684-FER_SER_REPLY [22-02-2023(online)].pdf	2023-02-22
23	202147053684-DRAWING [22-02-2023(online)].pdf	2023-02-22
24	202147053684-CLAIMS [22-02-2023(online)].pdf	2023-02-22
25	202147053684-ABSTRACT [22-02-2023(online)].pdf	2023-02-22
26	202147053684-PatentCertificate03-01-2024.pdf	2024-01-03
27	202147053684-IntimationOfGrant03-01-2024.pdf	2024-01-03

Search Strategy

1	202147053684E_17-10-2022.pdf