CN114542212A - Novel marine steam turbine cylinder of backing a car - Google Patents
Novel marine steam turbine cylinder of backing a car Download PDFInfo
- Publication number
- CN114542212A CN114542212A CN202210229963.3A CN202210229963A CN114542212A CN 114542212 A CN114542212 A CN 114542212A CN 202210229963 A CN202210229963 A CN 202210229963A CN 114542212 A CN114542212 A CN 114542212A
- Authority
- CN
- China
- Prior art keywords
- cylinder
- reversing
- reversing cylinder
- upper half
- steam turbine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000009434 installation Methods 0.000 abstract description 4
- 230000008646 thermal stress Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
- F01D25/243—Flange connections; Bolting arrangements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
Abstract
The invention aims to provide a novel reversing cylinder of a marine steam turbine, which comprises an upper half of the reversing cylinder, a lower half of the reversing cylinder and a cylinder, wherein the upper half of the reversing cylinder and a lower half stud of the reversing cylinder are fastened to form the reversing cylinder, and a middle section of the upper half of the reversing cylinder is lapped on a middle section of the cylinder and is fastened through the stud and a cover nut. The invention solves the problems that the original reversing turbine structure and the position of the lower half dead point of the cylinder are fixed and can only expand upwards when being heated, so that the centers of the reversing turbine and the rotor deviate and the like. By adopting the installation form that the upper half of the integrated reversing cylinder falls on the horizontal split surface of the cylinder, the thermal expansion can be released towards the circumferential direction, the concentricity with the center of the rotor is ensured, and the reliability and the safety of the operation of the unit are improved.
Description
Technical Field
The invention relates to a steam turbine, in particular to a reversing cylinder structure of the steam turbine.
Background
When high-temperature steam enters the reversing cylinder to do work, heat is transferred to the reversing cylinder to enable the reversing cylinder to generate thermal expansion, if the thermal expansion is not fully released, thermal stress can be generated, the rigidity of the reversing cylinder is affected, and the vibration of a unit can be generated. The original reversing turbine structure is fixed with the position of the lower half dead point of the cylinder, and the reversing turbine structure can only expand upwards when being heated, so that the problems that the reversing turbine and the center of the rotor deviate from each other and the like are caused. Therefore, the original reversing cylinder is required to be innovated to solve the problems.
Disclosure of Invention
The invention aims to provide a novel reversing cylinder of a marine steam turbine, which can solve the problems of deviation from the center of a rotor and the like caused by thermal stress and thermal expansion generated during the operation of the reversing cylinder in the prior art, thereby improving the operation safety and reliability of the reversing cylinder.
The purpose of the invention is realized as follows:
the invention relates to a novel reversing cylinder of a marine steam turbine, which is characterized in that: the reversing cylinder comprises an upper half of the reversing cylinder, a lower half of the reversing cylinder and a cylinder, wherein the upper half of the reversing cylinder and a lower half stud of the reversing cylinder are tightly screwed to form the reversing cylinder, a middle facet of the upper half of the reversing cylinder is lapped on a middle facet of the cylinder, and the reversing cylinder is tightly screwed through the stud and a cover nut.
The present invention may further comprise:
1. the periphery of the reversing cylinder is free from constraint with the cylinder and keeps concentricity with the rotor.
The invention has the advantages that: the invention solves the problems that the original reversing turbine structure and the position of the lower half dead point of the cylinder are fixed and can only expand upwards when being heated, so that the centers of the reversing turbine and the rotor deviate and the like. By adopting the installation form that the upper half of the integrated reversing cylinder falls on the horizontal split surface of the cylinder, the thermal expansion can be released towards the circumferential direction, the concentricity with the center of the rotor is ensured, and the reliability and the safety of the operation of the unit are improved.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
The invention will now be described in more detail by way of example with reference to the accompanying drawings in which:
with reference to fig. 1, the embodiment of the invention provides a novel reversing cylinder of a marine reversing turbine, which comprises an upper reversing cylinder half 1, a lower reversing cylinder half 2 and a cylinder 3, wherein the upper reversing cylinder half 1 is connected with the lower reversing cylinder half 2, and the reversing cylinder half and the lower reversing cylinder half are fastened by a stud and a cover nut to form a whole. The middle section of the upper half 1 of the reversing cylinder is larger than the middle section of the lower half 2 of the reversing cylinder, then the upper half 1 of the reversing cylinder is placed on the middle section of the cylinder 3, and the reversing cylinder is tightly clamped by a stud and a cover nut. The thermal stress and thermal expansion generated when the reversing cylinder works can be transmitted to the periphery, and the deviation from the center of the rotor is avoided, so that the safety and the reliability of the operation of the reversing cylinder are improved.
The invention relates to a realization process of a mounting form of a reversing turbine for a ship, which comprises the following steps:
1. the working requirement of the unit on the reversing turbine is met, the original mounting form of the turbine and the cylinder is changed, and the mounting of the lower half-dead-center position of the turbine and the cylinder is cancelled;
2. the upper half 1 of the reversing cylinder and the lower half 2 of the reversing cylinder are fastened through the stud bolts to form a whole, so that the integral installation of the reversing cylinder is more convenient;
3. the upper half 1 of the integrated reversing cylinder is positioned on the horizontal middle plane of the cylinder 3 and is tightly held, so that the centering with the bottom dead center of the cylinder is omitted, and the installation is easier;
4. the periphery of the reversing cylinder is not restricted by the cylinder, so that thermal expansion generated when the reversing cylinder is heated in work can be fully released to the periphery, thermal stress concentration is avoided, and the reversing cylinder can always keep concentricity with the rotor.
Claims (2)
1. The utility model provides a novel marine steam turbine cylinder of backing a car, characterized by: the reversing cylinder comprises an upper half of the reversing cylinder, a lower half of the reversing cylinder and a cylinder, wherein the upper half of the reversing cylinder and a lower half stud of the reversing cylinder are tightly screwed to form the reversing cylinder, a middle facet of the upper half of the reversing cylinder is lapped on a middle facet of the cylinder, and the reversing cylinder is tightly screwed through the stud and a cover nut.
2. The novel marine steam turbine reversing cylinder according to claim 1, characterized in that: the periphery of the reversing cylinder is free from constraint with the cylinder and keeps concentricity with the rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210229963.3A CN114542212A (en) | 2022-03-09 | 2022-03-09 | Novel marine steam turbine cylinder of backing a car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210229963.3A CN114542212A (en) | 2022-03-09 | 2022-03-09 | Novel marine steam turbine cylinder of backing a car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114542212A true CN114542212A (en) | 2022-05-27 |
Family
ID=81663792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210229963.3A Pending CN114542212A (en) | 2022-03-09 | 2022-03-09 | Novel marine steam turbine cylinder of backing a car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114542212A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191506010A (en) * | 1915-04-21 | 1916-04-21 | Giuseppe Belluzzo | Improvements in or relating to Steam Turbines for Ships. |
| US3832087A (en) * | 1972-10-20 | 1974-08-27 | Stal Laval Turbin Ab | Axial turbine combined with reverse turbine |
| CN1266143A (en) * | 1999-03-02 | 2000-09-13 | Abb阿尔斯托姆电力(瑞士)股份有限公司 | Thermal turbine casing |
| CN102165143A (en) * | 2009-01-30 | 2011-08-24 | 三菱重工业株式会社 | Turbine |
| JP2016075203A (en) * | 2014-10-06 | 2016-05-12 | 三菱重工業株式会社 | Steam turbine |
| JP2016151263A (en) * | 2015-02-19 | 2016-08-22 | 三菱重工業株式会社 | Turbine equipment and bearing stand |
| CN109139136A (en) * | 2018-09-25 | 2019-01-04 | 中国船舶重工集团公司第七0三研究所 | A kind of steam turbine astern casing steam inlet pipe fixed structure |
-
2022
- 2022-03-09 CN CN202210229963.3A patent/CN114542212A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191506010A (en) * | 1915-04-21 | 1916-04-21 | Giuseppe Belluzzo | Improvements in or relating to Steam Turbines for Ships. |
| US3832087A (en) * | 1972-10-20 | 1974-08-27 | Stal Laval Turbin Ab | Axial turbine combined with reverse turbine |
| CN1266143A (en) * | 1999-03-02 | 2000-09-13 | Abb阿尔斯托姆电力(瑞士)股份有限公司 | Thermal turbine casing |
| CN102165143A (en) * | 2009-01-30 | 2011-08-24 | 三菱重工业株式会社 | Turbine |
| JP2016075203A (en) * | 2014-10-06 | 2016-05-12 | 三菱重工業株式会社 | Steam turbine |
| JP2016151263A (en) * | 2015-02-19 | 2016-08-22 | 三菱重工業株式会社 | Turbine equipment and bearing stand |
| CN109139136A (en) * | 2018-09-25 | 2019-01-04 | 中国船舶重工集团公司第七0三研究所 | A kind of steam turbine astern casing steam inlet pipe fixed structure |
Non-Patent Citations (1)
| Title |
|---|
| "用调整汽缸螺栓应力的方法消除汽缸接合面漏汽的试探(摘要)", 华东电力, no. 11 * |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220527 |