CN101608556B - Large ground low-pressure internal cylinder - Google Patents
Large ground low-pressure internal cylinder Download PDFInfo
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- CN101608556B CN101608556B CN2008100392214A CN200810039221A CN101608556B CN 101608556 B CN101608556 B CN 101608556B CN 2008100392214 A CN2008100392214 A CN 2008100392214A CN 200810039221 A CN200810039221 A CN 200810039221A CN 101608556 B CN101608556 B CN 101608556B
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- internal cylinder
- pressure internal
- inner casing
- steam discharge
- discharge guide
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Abstract
The invention relates to a large ground low-pressure internal cylinder, which comprises an internal cylinder body and two exhaust steam deflector rings, wherein the internal cylinder body comprises a steam intake region and an air exhaust region; and the two exhaust steam deflector rings are arranged on the life and right sides of the internal cylinder body respectively and are fixedly connected with the internal cylinder body through n fasters respectively, and n is a natural number. Each exhaust steam deflector ring is symmetrically provided with two supporting cylinder feet along a transverse and horizontal split direction. Each exhaust steam deflector ring is provided with a positioning transverse fixed block in a longitudinal direction along a central line. The internal cylinder has the advantages of reducing the transportation size of supercritical low-pressure internal cylinder, meeting the requirements for secondary transportation by railway (highway), avoiding rigidity change, requiring only bolt for on-site connection, along with convenient operation.
Description
Technical field
The present invention relates to a kind of large ground low-pressure internal cylinder that is used for power station steam turbine.
Background technique
For the ultra supercritical unit, after particularly power rose, the low pressure leaving area of 1,000,000 units had reached 12.5m
2For guaranteeing the stability of unit, the bearing of the low-pressure internal cylinder of existing conventional ultra supercritical unit adopts and lands bearing, low-pressure internal cylinder directly is located on the bearing support, the Placement of steam discharge guide ring and inner casing body as shown in Figure 1, the mode of steam discharge guide ring 2 ' and 1 ' the employing welding of inner casing body forms the one that can not be split and has good stable to guarantee low-pressure internal cylinder, thereby guarantee the safety of unit, the length of above-mentioned low-pressure internal cylinder and wide about 6.5m and the 6.9m of having reached respectively, and China's ultra supercritical 1,000,000 grade units mainly are distributed in the riverine and coastal area at present, and therefore so big parts can be transported to the scene by the water route.
Along with the emergence of domestic development and national economy and hinterland, the market focus also will turn to more wide hinterland, and the electric power breach of hinterland is obvious day by day.Improve coal-fired unit efficiency, save the consumption of primary energy, the discharging that reduces pollutant is the Eternal Theme of our times energy industry sustainable development, especially the top priority of China's thermal power structure adjustment.Therefore, development ultra supercritical, big capacity unit are the glorious tasks of power equipment enterprise, we notice that the arrowhead of China railways (highway) secondary transportation is respectively: the most about 4m of length, can't not transport to the scene by railway (highway) if do not do any change at the area low-pressure internal cylinder that does not have the water transport condition.How efficiently ultra supercritical 1,000,000 grade units to use the hinterland be the problem that the technician faces.
Summary of the invention
For the problem that has technology to exist on overcoming, the present invention aims to provide a kind of novel large ground low-pressure internal cylinder, to reduce the size of ultra supercritical unit low-pressure internal cylinder, satisfy the demand of railway (highway) secondary transportation, realize railway (highway) transportation of hinterland low-pressure internal cylinder.
A kind of large ground low-pressure internal cylinder of the present invention, comprise the inner casing body, two steam discharge guide rings, wherein the inner casing body comprises the admission zone and the zone of bleeding, it is characterized in that: described two steam discharge guide rings are separately positioned on the left and right sides of inner casing body, and fixedly connected with described inner casing body by n fastening piece respectively, wherein n is a natural number.
In above-mentioned large ground low-pressure internal cylinder, described each steam discharge guide ring is along being symmetrically distributed with two support ram's horns on the transverse horizontal split direction.
In above-mentioned large ground low-pressure internal cylinder, described each steam discharge guide ring is provided with the crosswise fixed piece of a location usefulness along the center line longitudinal direction.
In above-mentioned large ground low-pressure internal cylinder, described inner casing body axial length is less than 4m.
In above-mentioned large ground low-pressure internal cylinder, described each steam discharge guide ring axial length is about 1.6m.
Owing to adopted above-mentioned technical solution, large ground low-pressure internal cylinder of the present invention can split, and, satisfies by the requirement of railway transport to the hinterland in secondary transfinites the transportation clearance scope with control low-pressure internal cylinder size; And consider that the low-pressure internal cylinder middle part for the admission zone and the zone of drawing gas, might cause gas leakage if split, and be chosen in steam discharge guide ring place for this reason and split, then can not cause low-pressure internal cylinder gas leakage, have characteristics safe and reliable, that the engineering use value is high.
Description of drawings
Fig. 1 is the schematic representation of the employing welding connecting mode of the low-pressure internal cylinder steam discharge guide ring of prior art and inner casing body;
Fig. 2 is each the constituent elements structural representation after large ground low-pressure internal cylinder of the present invention splits;
Fig. 3 is the steam discharge guide ring of large ground low-pressure internal cylinder of the present invention and the Placement schematic representation of inner casing body.
Embodiment
Below in conjunction with Fig. 2, Fig. 3, the present invention is described in detail.
The present invention, it is a kind of large ground low-pressure internal cylinder, comprise inner casing body 1, two steam discharge guide rings 2, wherein inner casing body 1 comprises the admission zone and the regional (not shown) of bleeding, and two steam discharge guide rings 2 are separately positioned on the left and right sides of inner casing body 1, and is connected and fixed by n fastening piece 5 and inner casing body 1 respectively, wherein n is a natural number, and fastening piece 5 is a bolt in the present invention.
Each steam discharge guide ring 2 makes exhaust guide ring 2 and ram's horn 3 welderings be one, to guarantee the rigidity of large ground low-pressure internal cylinder of the present invention along laterally being symmetrically distributed with two supports with ram's horn 3 on the split direction.
Each steam discharge guide ring 2 longitudinally split direction is provided with the crosswise fixed piece 4 of a location usefulness, to guarantee the position location.
In the present invention, the length of inner casing body 1 and wide length and wide 1.6m and the 6.9m of being about respectively that is about 3.9m and 6.9m, steam discharge guide ring 2 respectively split the demand that the back fully can the meeting tier 2s transportation with inner casing body 1 and steam discharge guide ring 2.
After 1 fine finishing of inner casing body with the workpiece of steam discharge guide ring 2 by bolt assembly unit at the scene, with bolt both the good connection of card of tightly trying hard to keep, show welded structure rigidity indifference in this method for splitting and the former technology by calculating, and the stability of whole low-pressure internal cylinder meets the demands.
In addition, all can adopt structure of the present invention to newly-designed various ultra supercritical unit ground low-pressure internal cylinders.
In sum, the present invention has following advantage:
1, reduced the transportation clearance of ultra supercritical low-pressure internal cylinder, made it satisfy the needs of railway (highway) secondary transportation.
2, the rigidity no change of this unit, scene only need bolt to connect, and be easy to operate.
Below embodiment has been described in detail the present invention in conjunction with the accompanying drawings, and those skilled in the art can make the many variations example to the present invention according to the above description.Thereby some details among the embodiment should not constitute limitation of the invention, and the scope that the present invention will define with appended claims is as protection scope of the present invention.
Claims (3)
1. large ground low-pressure internal cylinder, comprise the inner casing body, two steam discharge guide rings, wherein the inner casing body comprises the admission zone and the zone of bleeding, it is characterized in that: described two steam discharge guide rings are separately positioned on the left and right sides of inner casing body, and fixedly connected with described inner casing body by n fastening piece respectively, wherein n is a natural number
Described each steam discharge guide ring is along being symmetrically distributed with two support ram's horns on the transverse horizontal split direction;
Described each steam discharge guide ring is provided with the crosswise fixed piece of a location usefulness along the center line longitudinal direction.
2. large ground low-pressure internal cylinder according to claim 1 is characterized in that: described inner casing body axial length is less than 4m.
3. large ground low-pressure internal cylinder according to claim 1 is characterized in that: described each steam discharge guide ring axial length is about 1.6m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100392214A CN101608556B (en) | 2008-06-19 | 2008-06-19 | Large ground low-pressure internal cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100392214A CN101608556B (en) | 2008-06-19 | 2008-06-19 | Large ground low-pressure internal cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101608556A CN101608556A (en) | 2009-12-23 |
| CN101608556B true CN101608556B (en) | 2011-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008100392214A Active CN101608556B (en) | 2008-06-19 | 2008-06-19 | Large ground low-pressure internal cylinder |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103046974A (en) * | 2012-12-20 | 2013-04-17 | 东方电气集团东方汽轮机有限公司 | High-pressure cylinder of ultra-supercritical steam turbine set |
| CN103967537B (en) * | 2014-05-09 | 2015-12-02 | 山东电力建设第二工程公司 | Half Speed formula turbine low pressure cylinder load distribution method |
| CN106401672B (en) * | 2016-11-01 | 2018-10-16 | 东方电气集团东方汽轮机有限公司 | A kind of steam turbine low-pressure inner casing axial direction landing structure |
| CN108952837B (en) * | 2018-06-21 | 2021-02-26 | 东南大学 | Device and method for monitoring cat claw load change in process of starting steam turbine to be in hot state |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19629933C1 (en) * | 1996-07-24 | 1997-09-04 | Siemens Ag | Steam-turbine plant e.g. with two inner low-pressure (ND) housings |
| GB2320527A (en) * | 1996-10-21 | 1998-06-24 | Bmw Rolls Royce Gmbh | Dismantling or assembling turbine engine front end bearing housing or LP compressor component |
| CN2793333Y (en) * | 2005-05-31 | 2006-07-05 | 上海汽轮机有限公司 | Bearing positioning structure on bottom of direct air-cooling steam turbine exhausting device |
| CN200985806Y (en) * | 2006-11-01 | 2007-12-05 | 上海汽轮机有限公司 | Dehumidifier for nuclear power steam turbine through flow portion |
-
2008
- 2008-06-19 CN CN2008100392214A patent/CN101608556B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19629933C1 (en) * | 1996-07-24 | 1997-09-04 | Siemens Ag | Steam-turbine plant e.g. with two inner low-pressure (ND) housings |
| GB2320527A (en) * | 1996-10-21 | 1998-06-24 | Bmw Rolls Royce Gmbh | Dismantling or assembling turbine engine front end bearing housing or LP compressor component |
| CN2793333Y (en) * | 2005-05-31 | 2006-07-05 | 上海汽轮机有限公司 | Bearing positioning structure on bottom of direct air-cooling steam turbine exhausting device |
| CN200985806Y (en) * | 2006-11-01 | 2007-12-05 | 上海汽轮机有限公司 | Dehumidifier for nuclear power steam turbine through flow portion |
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| CN101608556A (en) | 2009-12-23 |
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