CN114542210B - Positioning structure of steam turbine partition plate retaining ring - Google Patents
Positioning structure of steam turbine partition plate retaining ring Download PDFInfo
- Publication number
- CN114542210B CN114542210B CN202210229942.1A CN202210229942A CN114542210B CN 114542210 B CN114542210 B CN 114542210B CN 202210229942 A CN202210229942 A CN 202210229942A CN 114542210 B CN114542210 B CN 114542210B
- Authority
- CN
- China
- Prior art keywords
- ring
- baffle
- stage
- support ring
- support
- 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.)
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Links
- 238000005192 partition Methods 0.000 title claims abstract description 17
- 230000007246 mechanism Effects 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
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
- F01D25/246—Fastening of diaphragms or stator-rings
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The invention aims to provide a positioning structure of a steam turbine diaphragm support ring, which comprises a support ring and a baffle plate, wherein the support ring is arranged outside the baffle plate, the outer ring surface of the baffle plate is matched with the inner ring of a boring hole of the support ring through tolerance, and other support rings except for a first stage support ring and a last stage support ring are respectively connected with a previous stage support ring and a next stage support ring into a whole through positioning pin positioning strings. The invention uses the holding ring corresponding to each level of baffle to install the fixed baffle, and the outer ring surface of the baffle and the inner ring of the holding ring boring hole are designed with a matching tolerance, which not only ensures the smooth assembly between the two, but also ensures the inner ring of the holding ring boring hole to support the outer ring surface of the baffle. In order to accurately and fixedly connect the multi-stage retainer rings together, the multi-stage retainer rings are integrally connected in series by using locating pins through analysis of stress conditions, action mechanisms and strength analysis during design, and the original segmented retainer rings are firmly connected together through reasonable angle arrangement, so that the installation and fixation of the cylindrical cylinder partition plates are solved.
Description
Technical Field
The invention relates to a steam turbine positioning structure, in particular to a steam turbine partition plate retaining ring positioning structure.
Background
In impulse turbine, sometimes the fixed baffle is installed by the baffle sleeve, and the baffle sleeve can prevent or reduce the inter-stage distance from being influenced by the upper steam extraction port, so that the axial dimension of the turbine is relatively reduced, the shape of the cylinder can be simplified, the disassembly and assembly are convenient, the baffle can be freely expanded in the radial direction after being heated, and convenient conditions are created for the generalization of the cylinder. In addition, the same function as in the reaction turbine is to support the vane ring.
Disclosure of Invention
The invention aims to provide a positioning structure of a steam turbine diaphragm retainer, which can ensure smooth assembly between diaphragm retainer rings and ensure that the inner ring of a boring hole of the retainer ring supports the outer ring surface of a diaphragm.
The purpose of the invention is realized in the following way:
the invention relates to a positioning structure of a steam turbine partition plate holding ring, which is characterized in that: the device comprises a holding ring and a baffle plate, wherein the holding ring is arranged outside the baffle plate, the outer ring surface of the baffle plate is matched with the inner ring of a boring hole of the holding ring through tolerance, and the rest holding rings are respectively connected with the holding ring of the previous stage and the holding ring of the next stage into a whole through positioning pins in a positioning string mode except the holding ring of the first stage and the holding ring of the last stage.
The invention may further include:
1. the nth level includes x through-holes and blind holes that quantity equals and is used for assembling the locating pin, and the angular position of n+1st level through-hole and blind hole is exchanged, and the angular position of n+2nd level through-hole and blind hole is the same with the nth level to the pitch circle of hole increases step by step.
The invention has the advantages that: in the steam turbine adopting the cylindrical cylinder, the holding rings corresponding to each level of partition plates are used for installing and fixing the partition plates, and the outer ring surface of the partition plates and the inner ring of the holding ring boring hole are designed with matching tolerances, so that the smooth assembly between the two can be ensured, and the inner ring of the holding ring boring hole can be ensured to support the outer ring surface of the partition plates. In order to accurately and fixedly connect the multi-stage retainer rings together, the multi-stage retainer rings are integrally connected in series by using locating pins through analysis of stress conditions, action mechanisms and strength analysis during design, and the original segmented retainer rings are firmly connected together through reasonable angle arrangement, so that the installation and fixation of the cylindrical cylinder partition plates are solved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a radial schematic view of a spacer ring positioning mode of a certain stage of the present invention.
Detailed Description
The invention is described in more detail below, by way of example, with reference to the accompanying drawings:
in combination with fig. 1-2, the invention comprises a holding ring 1, a partition plate 2 and a positioning pin 3, the holding ring 1 and the upper and lower semi-partition plates of the whole circle are matched by means of tolerance, one of the holding rings shown in fig. 1 is positioned with the positioning pin for the previous stage and the next stage, so as to achieve the aim of connecting a plurality of stages in series, each holding ring receives 3 positioning pins from the previous stage holding ring and positions the holding ring for the next stage by using 3 positioning pins (in combination with fig. 2), therefore, it can be seen that the n-th stage is provided with 3 through holes 4 and 3 blind holes 5 for assembling the positioning pin except the first holding ring and the last holding ring, the angle positions of the n+1th through holes 4 and the blind holes 5 are exchanged, and the angle positions of the n+2th through holes 4 and the blind holes 5 are the same as the n-th stage, so that the rule is repeated. It should be noted that the pitch circle of the through hole 4 on the holding ring 1 of each stage of the partition board 2 is preferably larger than the pitch circle of the blind hole 5, so that the pitch circle expands gradually along with the outer diameter of the holding ring 1 along the axial direction, and finally the positioning pins 3 are staggered in this way to realize gradual positioning connection. Likewise, the bolts required for connection may be arranged in a stepwise manner in the same manner, which is within the scope of the present design.
The axial distance of the steam turbine adopting the multi-stage partition boards is generally longer, so that the design adopts the step-by-step connection and fixation between the holding rings 1 of each two-stage partition boards 2 through the locating pins 3, and the realization process of the design comprises the following steps:
1. the axial force of the steam flow acting on the holding ring in the operation process of the steam turbine is obtained through thermal calculation, and the shearing force caused by the self gravity of the holding ring and the partition plate is determined according to the unit type size.
2. The action mechanism of the locating pins is known, and the number of the required locating pins is determined through strength analysis.
3. The positions of the positioning pins are reasonably arranged, so that interference is avoided, and the structure space for realizing other purposes is not occupied.
The related technical characteristics of the design are as follows:
1. the multi-stage baffle holding rings are integrally connected in series in this way, the number of stages is not limited, the multi-stage baffle holding rings are mutually positioned and connected, and the central positions of all the baffles and the holding rings can be ensured through the connection as long as the final stage is fixed.
2. The locating pins are adopted to be staggered and positioned step by step for connection, the locating pins play a role in locating and connecting, the operability is strong, other spaces are not occupied, and the reliability is high after completion.
Claims (1)
1. A positioning structure of a steam turbine partition plate supporting ring is characterized in that: including holding ring, baffle, hold the ring and install in the outside of baffle, the outer anchor ring of baffle passes through tolerance cooperation with the bore hole inner ring that holds the ring, except that the ring is held to first order and last level is held to the last level, the nth level includes that x through-holes and blind hole that quantity equals are used for assembling the locating pin, the angular position of n+1th level through-hole and blind hole is exchanged, the angular position of n+2th level through-hole and blind hole is the same with the nth level to the pitch circle of hole increases step by step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210229942.1A CN114542210B (en) | 2022-03-09 | 2022-03-09 | Positioning structure of steam turbine partition plate retaining ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210229942.1A CN114542210B (en) | 2022-03-09 | 2022-03-09 | Positioning structure of steam turbine partition plate retaining ring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114542210A CN114542210A (en) | 2022-05-27 |
| CN114542210B true CN114542210B (en) | 2023-12-05 |
Family
ID=81663538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210229942.1A Active CN114542210B (en) | 2022-03-09 | 2022-03-09 | Positioning structure of steam turbine partition plate retaining ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114542210B (en) |
Citations (16)
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|---|---|---|---|---|
| BE599871A (en) * | 1960-02-05 | 1961-05-29 | Licentia Gmbh | Axial turbine comprising a set of guide vane supports. |
| GB996773A (en) * | 1962-10-19 | 1965-06-30 | Ass Elect Ind | Improvements in interstage diaphragms for turbines and axial-flow compressors |
| GB1013313A (en) * | 1963-10-22 | 1965-12-15 | Belliss & Morcom Ltd | Turbines |
| GB1137512A (en) * | 1965-01-12 | 1968-12-27 | Escher Wyss Ag | Turbine housing |
| GB1267921A (en) * | 1968-05-09 | 1972-03-22 | P & O Pilgrim Valve Ltd | Method of effecting relative axial movement between a hub and a shaft |
| GB1523157A (en) * | 1974-10-14 | 1978-08-31 | Creusot Loire | Turbomachines |
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| CN106194292A (en) * | 2016-08-31 | 2016-12-07 | 中国船舶重工集团公司第七�三研究所 | Steam turbine rotary spacing plate |
| CN107627657A (en) * | 2016-07-18 | 2018-01-26 | 成都豪能科技股份有限公司 | Annular conical surface friction material adhesive mould and its adhering method among a kind of synchronizer |
| CN109723507A (en) * | 2018-12-28 | 2019-05-07 | 中国船舶重工集团公司第七0三研究所 | A kind of heap helium turbine mechanism |
| CN210371598U (en) * | 2019-05-07 | 2020-04-21 | 河南中州铝业高科有限公司 | Positioning ring of high-efficient installation |
| CN114135348A (en) * | 2021-11-11 | 2022-03-04 | 河北国源电气股份有限公司 | Adjustable integrated holding ring for steam turbine |
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2022
- 2022-03-09 CN CN202210229942.1A patent/CN114542210B/en active Active
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE599871A (en) * | 1960-02-05 | 1961-05-29 | Licentia Gmbh | Axial turbine comprising a set of guide vane supports. |
| GB996773A (en) * | 1962-10-19 | 1965-06-30 | Ass Elect Ind | Improvements in interstage diaphragms for turbines and axial-flow compressors |
| GB1013313A (en) * | 1963-10-22 | 1965-12-15 | Belliss & Morcom Ltd | Turbines |
| GB1137512A (en) * | 1965-01-12 | 1968-12-27 | Escher Wyss Ag | Turbine housing |
| DE1426801A1 (en) * | 1965-01-12 | 1969-07-17 | Escher Wyss Ag | Housing for a gas or steam turbine |
| GB1267921A (en) * | 1968-05-09 | 1972-03-22 | P & O Pilgrim Valve Ltd | Method of effecting relative axial movement between a hub and a shaft |
| GB1523157A (en) * | 1974-10-14 | 1978-08-31 | Creusot Loire | Turbomachines |
| JP2005256984A (en) * | 2004-03-12 | 2005-09-22 | Akutsu Yoshito | Lock pin engagement position adjusting mechanism |
| CN203098492U (en) * | 2013-03-07 | 2013-07-31 | 山东省农业机械科学研究所 | Non-machinability adjustment locating key for general assembly of turbine partition board |
| CN104100301A (en) * | 2013-04-02 | 2014-10-15 | 成都盛航动力设备有限公司 | Multi-stage differential pressure radial flow turbine capable of adjusting nozzle ring opening |
| FR3010761A1 (en) * | 2013-09-13 | 2015-03-20 | Areva Np | TIGHTENING DEVICE AND METHOD FOR SAFEGUARDING A FOOD SUPPLY DEVICE OF A STEAM GENERATOR CAPABLE OF USING SUCH A DEVICE |
| CN204436482U (en) * | 2014-12-19 | 2015-07-01 | 北京华清燃气轮机与煤气化联合循环工程技术有限公司 | A kind of gas turbine turbine stator blade position structure |
| CN107627657A (en) * | 2016-07-18 | 2018-01-26 | 成都豪能科技股份有限公司 | Annular conical surface friction material adhesive mould and its adhering method among a kind of synchronizer |
| CN106194292A (en) * | 2016-08-31 | 2016-12-07 | 中国船舶重工集团公司第七�三研究所 | Steam turbine rotary spacing plate |
| CN109723507A (en) * | 2018-12-28 | 2019-05-07 | 中国船舶重工集团公司第七0三研究所 | A kind of heap helium turbine mechanism |
| CN210371598U (en) * | 2019-05-07 | 2020-04-21 | 河南中州铝业高科有限公司 | Positioning ring of high-efficient installation |
| CN114135348A (en) * | 2021-11-11 | 2022-03-04 | 河北国源电气股份有限公司 | Adjustable integrated holding ring for steam turbine |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN114542210A (en) | 2022-05-27 |
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