CN114575946A - Anti-loosening structure for positioning pin of primary clapboard retaining ring - Google Patents

Anti-loosening structure for positioning pin of primary clapboard retaining ring Download PDF

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Publication number
CN114575946A
CN114575946A CN202210229962.9A CN202210229962A CN114575946A CN 114575946 A CN114575946 A CN 114575946A CN 202210229962 A CN202210229962 A CN 202210229962A CN 114575946 A CN114575946 A CN 114575946A
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CN
China
Prior art keywords
primary
positioning
positioning pin
clapboard
holding ring
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Granted
Application number
CN202210229962.9A
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Chinese (zh)
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CN114575946B (en
Inventor
常倩倩
王超
赵俊波
姚福锋
张红莲
刘殊一
丁化文
韦俊
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703th Research Institute of CSIC
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703th Research Institute of CSIC
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Priority to CN202210229962.9A priority Critical patent/CN114575946B/en
Publication of CN114575946A publication Critical patent/CN114575946A/en
Application granted granted Critical
Publication of CN114575946B publication Critical patent/CN114575946B/en
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    • 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
    • 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
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Insertion Pins And Rivets (AREA)

Abstract

The invention aims to provide a positioning pin anti-loosening structure of a primary clapboard holding ring, which comprises a cylinder, the primary clapboard holding ring and positioning pins, wherein the positioning pins of the primary clapboard holding ring are provided with radial bolts with the same quantity as the positioning pins. According to the invention, by reasonably setting the position of the radial bolt, the looseness and the falling off of the first-stage clapboard retainer ring positioning pin are effectively prevented, so that the safety and the reliability of the steam turbine under the long-term operation condition are improved.

Description

Anti-loosening structure for positioning pin of primary clapboard retaining ring
Technical Field
The invention relates to a steam inlet chamber of a steam turbine, in particular to a loosening structure of a first-stage retaining ring of the steam inlet chamber of the steam turbine.
Background
The multistage partition plate holding ring adopted by the steam turbine plays a role of a partition plate sleeve or an inner cylinder, the partition plate holding ring is usually composed of multistage whole-circle rings, and long pins are adopted between the various stages of holding rings to be staggered and positioned step by step. Except the first-stage holding ring, the rest holding rings at all stages can ensure that the positioning pin moves in a limited space in the long-term operation process, and the pin can still play an inter-stage positioning role even at the limit position.
The front part of the primary holding ring is a steam turbine steam inlet chamber, and a large space is generally reserved in the design process, so that the risk that a plurality of positioning pins of the primary holding ring are loosened or even completely thrown off exists in the long-term operation, when the situation occurs, the positioning between the primary holding ring and the secondary holding ring cannot be guaranteed, and the accident probability of the steam turbine is greatly increased.
Disclosure of Invention
The invention aims to provide a positioning pin anti-loosening structure of a primary clapboard retaining ring, which ensures effective positioning of a primary positioning pin.
The purpose of the invention is realized as follows:
the invention relates to a positioning pin anti-loosening structure of a primary clapboard holding ring, which comprises a cylinder, the primary clapboard holding ring and a positioning pin, and is characterized in that: and radial bolts with the same quantity as the positioning pins are arranged at the positioning pins of the first-stage holding ring.
The present invention may further comprise:
1. the axial distance between the locating pin and the bolt is smaller than the effective locating length of the locating pin.
2. And a distance for ensuring the position of the radial bolt is reserved between the cylinder and the holding ring.
The invention has the advantages that: the invention can ensure the stability and the safety of the steam turbine at the position of the ring holding positioning pin under the environment that the steam turbine continuously operates for a long time.
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:
referring to fig. 1, the present invention includes a retaining ring 1, positioning pins 2 between the primary and secondary retaining rings, radial bolts 3, and cylinders 4, the number of which is the same as that of the positioning pins 2, and the positioning pins 2 may be loosened during the operation of the steam turbine, so that the axial distance between the positioning pins 2 and the radial bolts 3 is smaller than the effective positioning length of the positioning pins 2, so as to ensure that the positioning pins 2 can also perform the positioning function at the extreme position. The radial bolt is screwed into the holding ring 1 by using a torque wrench 3, finally, the partition plate and the holding ring 1 are integrally installed into the cylinder 4, and the distance between the cylinder 4 and the holding ring 1 ensures the position of the radial bolt 3, so that the radial bolt 3 does not need to be designed in an anti-rotation mode, thereby achieving two purposes at one stroke. The invention adopts a simpler structure, can basically ensure that the primary positioning pin is always effective in the service life cycle of the steam turbine, and has no operation risk.
The implementation process of the invention comprises the following steps:
and calculating the number of the required positioning pins 2, and analyzing the working state and the effective positioning length of the positioning pins 2.
According to the calculation and analysis results, radial bolts 3 are arranged at corresponding positions of the holding ring 1 to prevent the positioning pin 2 from loosening and failing.
The invention has the following relevant technical characteristics:
1. the design adopts a method of increasing radial bolts, so that the loosening and falling of the first-stage clapboard retainer ring positioning pin are effectively prevented.
2. Simple structure, strong operability and no occupation of other spaces.

Claims (3)

1. The utility model provides a locking structure that moves of locating pin of ring is held to first grade baffle, includes cylinder, first grade and holds ring, locating pin, characterized by: and radial bolts with the same quantity as the positioning pins are arranged at the positioning pins of the first-stage holding ring.
2. The anti-loosening structure for the positioning pin of the primary separator retaining ring according to claim 1, wherein: the axial distance between the positioning pin and the bolt is smaller than the effective positioning length of the positioning pin.
3. The anti-loosening structure for the positioning pin of the primary separator retaining ring according to claim 1, wherein: and a distance for ensuring the position of the radial bolt is reserved between the cylinder and the holding ring.
CN202210229962.9A 2022-03-09 2022-03-09 Locating pin anti-loosening structure of first-stage baffle holding ring Active CN114575946B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210229962.9A CN114575946B (en) 2022-03-09 2022-03-09 Locating pin anti-loosening structure of first-stage baffle holding ring

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210229962.9A CN114575946B (en) 2022-03-09 2022-03-09 Locating pin anti-loosening structure of first-stage baffle holding ring

Publications (2)

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CN114575946A true CN114575946A (en) 2022-06-03
CN114575946B CN114575946B (en) 2023-12-05

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CN202210229962.9A Active CN114575946B (en) 2022-03-09 2022-03-09 Locating pin anti-loosening structure of first-stage baffle holding ring

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Citations (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB542197A (en) * 1940-01-25 1941-12-30 British Thomson Houston Co Ltd Improved supporting arrangement for elastic fluid turbine diaphragms
GB1150062A (en) * 1965-09-01 1969-04-30 Ass Elect Ind Improvements in or relating to clamping together of two parts of a pressure casing by means of studs or bolts
CN1031877A (en) * 1987-08-24 1989-03-22 西屋电气公司 The thermal distortion isolation system that turbine blade rings is used
US5024579A (en) * 1990-07-18 1991-06-18 Westinghouse Electric Corp. Fully floating inlet flow guide for double-flow low pressure steam turbines
JPH0960633A (en) * 1995-08-21 1997-03-04 Mitsubishi Heavy Ind Ltd Retaining pin device
JP2008261378A (en) * 2007-04-10 2008-10-30 Nec Access Technica Ltd Screw slip-off prevention structure
CN101545359A (en) * 2008-03-26 2009-09-30 煤炭科学研究总院西安研究院 Reed type shedding-proof inserted pin
US20100061845A1 (en) * 2006-10-28 2010-03-11 Daniela Turzing Guiding device of a flow machine and guide vane for such a guiding device
CA2688888A1 (en) * 2008-12-19 2010-06-19 Robert S. Bierwith Quick release screw connector for earth-moving equipment
DE102009049691A1 (en) * 2009-10-16 2011-04-21 Siemens Aktiengesellschaft Sealing arrangement on a steam turbine housing, comprising a fixable sealing ring
CN202628720U (en) * 2012-04-28 2012-12-26 苏州光福冶金铸造有限责任公司 Locating pin
CN204402593U (en) * 2014-12-08 2015-06-17 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 turbine turns structure in quiet tune
CN206111247U (en) * 2016-09-12 2017-04-19 中国科学院工程热物理研究所 Axial turbine structure of different nozzle cascades and movable vane can change outfit
US20170130608A1 (en) * 2014-07-18 2017-05-11 Siemens Energy, Inc. Turbine assembly with detachable struts
US20180023419A1 (en) * 2015-01-30 2018-01-25 Mitsubishi Hitachi Power Systems, Ltd. Bolt fall-out preventing structure
CN109578091A (en) * 2018-11-23 2019-04-05 东方电气集团东方汽轮机有限公司 A kind of gas turbine segmentation ring fixing structure
CN211039324U (en) * 2019-10-10 2020-07-17 徐州华恒机器人系统有限公司 But plug positioner of high strength high efficiency
CN111677589A (en) * 2020-06-10 2020-09-18 中国船舶重工集团公司第七0三研究所 Composite elastic cantilever type gas turbine support ring vibration-damping and impact-resisting assembly
CN113236647A (en) * 2021-05-21 2021-08-10 嘉兴奥展实业有限公司 High elasticity solid construction of preventing of security
CN215890109U (en) * 2021-10-26 2022-02-22 华能陇东能源有限责任公司 Positioning push-pull device for steam turbine cylinder

Patent Citations (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB542197A (en) * 1940-01-25 1941-12-30 British Thomson Houston Co Ltd Improved supporting arrangement for elastic fluid turbine diaphragms
GB1150062A (en) * 1965-09-01 1969-04-30 Ass Elect Ind Improvements in or relating to clamping together of two parts of a pressure casing by means of studs or bolts
CN1031877A (en) * 1987-08-24 1989-03-22 西屋电气公司 The thermal distortion isolation system that turbine blade rings is used
US4816213A (en) * 1987-08-24 1989-03-28 Westinghouse Electric Corp. Thermal distortion isolation system for turbine blade rings
US5024579A (en) * 1990-07-18 1991-06-18 Westinghouse Electric Corp. Fully floating inlet flow guide for double-flow low pressure steam turbines
JPH0960633A (en) * 1995-08-21 1997-03-04 Mitsubishi Heavy Ind Ltd Retaining pin device
US20100061845A1 (en) * 2006-10-28 2010-03-11 Daniela Turzing Guiding device of a flow machine and guide vane for such a guiding device
JP2008261378A (en) * 2007-04-10 2008-10-30 Nec Access Technica Ltd Screw slip-off prevention structure
CN101545359A (en) * 2008-03-26 2009-09-30 煤炭科学研究总院西安研究院 Reed type shedding-proof inserted pin
CA2688888A1 (en) * 2008-12-19 2010-06-19 Robert S. Bierwith Quick release screw connector for earth-moving equipment
DE102009049691A1 (en) * 2009-10-16 2011-04-21 Siemens Aktiengesellschaft Sealing arrangement on a steam turbine housing, comprising a fixable sealing ring
CN202628720U (en) * 2012-04-28 2012-12-26 苏州光福冶金铸造有限责任公司 Locating pin
US20170130608A1 (en) * 2014-07-18 2017-05-11 Siemens Energy, Inc. Turbine assembly with detachable struts
CN204402593U (en) * 2014-12-08 2015-06-17 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 turbine turns structure in quiet tune
US20180023419A1 (en) * 2015-01-30 2018-01-25 Mitsubishi Hitachi Power Systems, Ltd. Bolt fall-out preventing structure
CN206111247U (en) * 2016-09-12 2017-04-19 中国科学院工程热物理研究所 Axial turbine structure of different nozzle cascades and movable vane can change outfit
CN109578091A (en) * 2018-11-23 2019-04-05 东方电气集团东方汽轮机有限公司 A kind of gas turbine segmentation ring fixing structure
CN211039324U (en) * 2019-10-10 2020-07-17 徐州华恒机器人系统有限公司 But plug positioner of high strength high efficiency
CN111677589A (en) * 2020-06-10 2020-09-18 中国船舶重工集团公司第七0三研究所 Composite elastic cantilever type gas turbine support ring vibration-damping and impact-resisting assembly
CN113236647A (en) * 2021-05-21 2021-08-10 嘉兴奥展实业有限公司 High elasticity solid construction of preventing of security
CN215890109U (en) * 2021-10-26 2022-02-22 华能陇东能源有限责任公司 Positioning push-pull device for steam turbine cylinder

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
方雅丽;王争艳;: "超临界350MW汽轮机高压静叶持环的设计开发", 热力透平, no. 03, pages 180 - 183 *
杨保;岳岁宁;: "蒸汽轮机2#静叶持环国产化加工工艺", 现代制造技术与装备, no. 11, pages 113 - 116 *
许世诚;: "西门子筒形缸汽轮机对检修工作的启示", 汽轮机技术, no. 05, pages 387 - 390 *
郭清温，李剑钊，戴振勇，兰如基，宋春胜: "径向销钉式隔板找中方法", 热能动力工程, no. 05, pages 327 - 329 *

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