CN105545384A - Flexible support of high-back-pressure turbine - Google Patents
Flexible support of high-back-pressure turbine Download PDFInfo
- Publication number
- CN105545384A CN105545384A CN201610080518.XA CN201610080518A CN105545384A CN 105545384 A CN105545384 A CN 105545384A CN 201610080518 A CN201610080518 A CN 201610080518A CN 105545384 A CN105545384 A CN 105545384A
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- China
- Prior art keywords
- flexible
- front bearing
- bearing box
- flexible support
- steam turbine
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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
- F01D25/28—Supporting or mounting arrangements, e.g. for turbine casing
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The invention provides a flexible support of a high-back-pressure turbine, and relates to the energy and power industry. The flexible support comprises an outer cylinder, a front bearing box, a transverse key and a cat claw part. The cat claw part is arranged on the outer cylinder. The outer cylinder is supported by the front bearing box through the transverse key. The top end of the transverse key penetrates through the cat claw part. The transverse key is fixed to the cat claw part through a bolt A and a nut A. The bottom end of the transverse key is connected with a front bearing box supporting plate. The bottom end of the front bearing box supporting plate is connected with one end of a flexible supporting column, reinforcing ribs are arranged on the flexible supporting column, and the other end of the flexible supporting column is fixed to a public base. According to the flexible support of the high-back-pressure turbine, by sufficiently utilizing the flexible supporting column and physical knowledge, a slide pin system is completely replaced with the flexible support, lubricating oil does not need to be added, supporting faces of the flexible support make tight contact, no gaps are formed, and therefore no sideward or vertical displacement can be generated, the phenomenon that the supporting structure of the turbine gets stuck is eliminated, and use safety, reliability and maintainability of the turbine are improved.
Description
Technical field
The present invention relates to energy power industry, be specifically related to a kind of high back pressure steam turbine flexible support.
Background technique
High back pressure steam turbine refers to that initial steam pressure is between 8MPa ~ 12MPa, and exhaust steam pressure is at the back pressure turbine of 4MPa ~ 7MPa.The steam (standard configuration parameter of boiler) of high parameter is become middle parameter steam by high back pressure steam turbine, on the basis meeting manufacturing equipment vapour demand, drive the equipment such as various pump, blower fan, compressor and generator, substitute temperature-decreased pressure reducer simultaneously, improve energy utilization rate.
Steam turbine supporting structure mostly is sliding key system, but sliding key system needs regularly to inject lubricant oil, adds the work such as inspection and maintenance, and other steam turbine supporting structure individual often can cause stuck phenomenon, brings hidden danger for Turbine Safety runs.
Summary of the invention
The object of the invention is the inspection and maintenance work in order to reduce high back pressure sliding pin system of steam turbine, and thoroughly eliminate stuck phenomenon, realize simple and efficient, a kind of high back pressure steam turbine flexible support of special proposition.
The technical solution used in the present invention is: a kind of high back pressure steam turbine flexible support, comprise outside cylinder, front bearing box, horizontal key and ram's horn, outside cylinder is provided with ram's horn, outside cylinder is bearing on front bearing box by horizontal key, and horizontal key top through ram's horn, and is fixed by bolt A and nut A and ram's horn, horizontal key bottom is connected with front bearing box support plate, front bearing box support plate bottom is connected with flexible backbone one end, and flexible backbone is provided with strengthening rib, and the flexible backbone the other end is fixed on common bed.
Described front bearing box support plate bottom is fixed by bolt B.
Described common bed bottom is fixed with bolt C.
Overlap between described flexible backbone and common bed and have pad.
Described pad is fixed by nut B and common bed.
The invention has the beneficial effects as follows: make full use of flexible backbone and physical knowledge, it is made to instead of sliding key system completely, do not need lubricating oil filling, its supporting surface contact is tight, very close to each other, therefore can not produce side direction and vertical displacement, thus eliminate the stuck phenomenon of steam turbine supporting structure, improve the Security of steam turbine use, reliability and maintenance.
accompanying drawing illustrates:
Fig. 1 is structural representation of the present invention.
embodiment:
With reference to Fig. 1, a kind of high back pressure steam turbine flexible support, comprise outside cylinder 1, front bearing box 2, horizontal key 3 and ram's horn 12, outside cylinder 1 is provided with ram's horn 12, outside cylinder 1 is bearing on front bearing box 2 by horizontal key 3, horizontal key 3 top is through ram's horn 12, and fixed by bolt A4 and nut A5 and ram's horn 12, horizontal key 3 bottom is connected with front bearing box support plate 13, front bearing box support plate 13 bottom is connected with flexible backbone 14 one end, flexible backbone 14 is provided with strengthening rib 7, and flexible backbone 14 the other end is fixed on common bed 10.Described front bearing box support plate 13 bottom is fixed by bolt B 6.Described common bed 10 bottom is fixed with bolt C11.Overlap between described flexible backbone 14 and common bed 10 and have pad 9.Described pad 9 is fixed by nut B8 and common bed 10.
High back pressure steam turbine is bearing on front bearing box 2 with the outside cylinder 1 of ram's horn 12 structure by horizontal key 3, horizontal key 3 bottom is connected with front bearing box support plate 13, front bearing box support plate 13 bottom connects flexible backbone 14, flexible backbone 14 is provided with strengthening rib 7, is fixed on common bed 10 bottom flexible backbone 14.High back pressure steam turbine rear portion is dead point, when after expanded by heating, outside cylinder 1 produces end thrust forward by ram's horn 12 and horizontal key 3 pairs of front bearing boxes 2 and flexible backbone 14 top, flexible backbone 14 is fixed on common bed 10, therefore produces a moment of flexure relative to bottom flexible backbone 14, forces flexible backbone 14 to produce distortion, this distortion needs to determine in regime of elastic deformation by calculating, like this when after unit cooling, before flexible backbone 14 returns to dilatancy again, realize working in reciprocating mode.
The effect that strengthening rib 7 plays is used to local strengthening flexible backbone 14, increases the stability of flexible backbone 14.
In sum, this high back pressure steam turbine flexible support, make full use of expanding with heat and contract with cold in flexible backbone 14 and physical knowledge, make it instead of sliding key system completely, do not need lubricating oil filling, its supporting surface contact is tight, very close to each other, therefore can not produce side direction and vertical displacement, thus eliminate the stuck phenomenon of steam turbine supporting structure, improve the Security of steam turbine use, reliability and maintenance.
Claims (5)
1. a high back pressure steam turbine flexible support, comprise outside cylinder (1), front bearing box (2), horizontal key (3) and ram's horn (12), it is characterized in that: outside cylinder (1) is provided with ram's horn (12), outside cylinder (1) is bearing on front bearing box (2) by horizontal key (3), horizontal key (3) top is through ram's horn (12), and by bolt A(4) and nut A(5) fix with ram's horn (12), horizontal key (3) bottom is connected with front bearing box support plate (13), front bearing box support plate (13) bottom is connected with flexible backbone (14) one end, flexible backbone (14) is provided with strengthening rib (7), flexible backbone (14) the other end is fixed on common bed (10).
2. high back pressure steam turbine flexible support according to claim 1, is characterized in that: front bearing box support plate (13) bottom is fixed by bolt B (6).
3. high back pressure steam turbine flexible support according to claim 1, is characterized in that: common bed (10) bottom is fixed with bolt C(11).
4. high back pressure steam turbine flexible support according to claim 1, is characterized in that: overlapping between flexible backbone (14) and common bed (10) has pad (9).
5. high back pressure steam turbine flexible support according to claim 4, is characterized in that: pad (9) is by nut B(8) fix with common bed (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610080518.XA CN105545384A (en) | 2016-02-05 | 2016-02-05 | Flexible support of high-back-pressure turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610080518.XA CN105545384A (en) | 2016-02-05 | 2016-02-05 | Flexible support of high-back-pressure turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105545384A true CN105545384A (en) | 2016-05-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610080518.XA Pending CN105545384A (en) | 2016-02-05 | 2016-02-05 | Flexible support of high-back-pressure turbine |
Country Status (1)
| Country | Link |
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| CN (1) | CN105545384A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106321171A (en) * | 2016-11-10 | 2017-01-11 | 中国船舶重工集团公司第七0三研究所 | Novel flexible support of high-back-pressure steam turbine |
| CN108775264A (en) * | 2018-07-18 | 2018-11-09 | 中国船舶重工集团公司第七0三研究所 | A kind of two-way flexible support structure of low parameter back pressure turbine |
| CN108825315A (en) * | 2018-09-21 | 2018-11-16 | 中国船舶重工集团公司第七0三研究所 | A kind of marine turbing bearing housing support construction |
| CN114278403A (en) * | 2021-11-18 | 2022-04-05 | 中国长江动力集团有限公司 | Elastic supporting plate |
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| US4637214A (en) * | 1985-12-17 | 1987-01-20 | Westinghouse Electric Corp. | Single-ended steam chest with improved support assembly |
| JP2007009731A (en) * | 2005-06-28 | 2007-01-18 | Mitsubishi Heavy Ind Ltd | Turbine |
| CN203531981U (en) * | 2013-09-05 | 2014-04-09 | 大连卓远重工有限公司 | Supercritical steam turbine low pressure cylinder |
| CN204041137U (en) * | 2014-06-18 | 2014-12-24 | 中国长江动力集团有限公司 | Steam turbine flexible support structure |
| CN204755003U (en) * | 2015-07-08 | 2015-11-11 | 东方电气集团东方汽轮机有限公司 | Support framework of main vapour governing valve of steam turbine high pressure |
| CN205330745U (en) * | 2016-02-05 | 2016-06-22 | 中国船舶重工集团公司第七�三研究所 | High back pressure steam turbine flexible support |
-
2016
- 2016-02-05 CN CN201610080518.XA patent/CN105545384A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4637214A (en) * | 1985-12-17 | 1987-01-20 | Westinghouse Electric Corp. | Single-ended steam chest with improved support assembly |
| JP2007009731A (en) * | 2005-06-28 | 2007-01-18 | Mitsubishi Heavy Ind Ltd | Turbine |
| CN203531981U (en) * | 2013-09-05 | 2014-04-09 | 大连卓远重工有限公司 | Supercritical steam turbine low pressure cylinder |
| CN204041137U (en) * | 2014-06-18 | 2014-12-24 | 中国长江动力集团有限公司 | Steam turbine flexible support structure |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106321171A (en) * | 2016-11-10 | 2017-01-11 | 中国船舶重工集团公司第七0三研究所 | Novel flexible support of high-back-pressure steam turbine |
| CN108775264A (en) * | 2018-07-18 | 2018-11-09 | 中国船舶重工集团公司第七0三研究所 | A kind of two-way flexible support structure of low parameter back pressure turbine |
| CN108775264B (en) * | 2018-07-18 | 2023-12-08 | 中国船舶重工集团公司第七0三研究所 | Bidirectional flexible supporting structure of low-parameter back pressure steam turbine |
| CN108825315A (en) * | 2018-09-21 | 2018-11-16 | 中国船舶重工集团公司第七0三研究所 | A kind of marine turbing bearing housing support construction |
| CN108825315B (en) * | 2018-09-21 | 2023-11-28 | 中国船舶重工集团公司第七0三研究所 | Bearing box supporting structure of marine steam turbine |
| CN114278403A (en) * | 2021-11-18 | 2022-04-05 | 中国长江动力集团有限公司 | Elastic supporting plate |
| CN114278403B (en) * | 2021-11-18 | 2024-05-28 | 中国长江动力集团有限公司 | Elastic support plate |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160504 |