CN203685318U - Integral type high-pressure inner cylinder for 350MW turbine - Google Patents
Integral type high-pressure inner cylinder for 350MW turbine Download PDFInfo
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- CN203685318U CN203685318U CN201420093195.4U CN201420093195U CN203685318U CN 203685318 U CN203685318 U CN 203685318U CN 201420093195 U CN201420093195 U CN 201420093195U CN 203685318 U CN203685318 U CN 203685318U
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- inner cylinder
- pressure inner
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- turbine
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- 238000005266 casting Methods 0.000 claims description 4
- 238000000605 extraction Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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Abstract
The utility model provides an integral type high-pressure inner cylinder for a 350MW turbine and relates to a high-pressure inner cylinder for the turbine. The integral type high-pressure inner cylinder solves the problems that processing and installing are tedious as a high-pressure inner cylinder and a high-pressure diaphragm sleeve of an existing 350MW turbine are two independent structures, the production cost is increased due to the fact that the radial dimension needs to be large if the through-flow area is increased, the through-flow area is small under the circumstance that the integral high and medium pressure radial dimension is not increased, and the installation deflection of the high-pressure diaphragm sleeve is large. The integral type high-pressure inner cylinder comprises the high-pressure inner cylinder body and the high-pressure diaphragm sleeve, wherein the high-pressure inner cylinder body and the high-pressure diaphragm sleeve are integrally poured to form the high-pressure inner cylinder. The through-flow air inlet diameter of the integrally-poured high-pressure inner cylinder is 983.5mm. The integral type high-pressure inner cylinder is applied to the turbine.
Description
Technical field
The utility model relates to a kind of steam turbine high-pressure inner cylinder.
Background technique
High pressure inner casing and the high pressure blade ring of 350MW steam turbine are two independent structures at present, need 2 sprays, and the processing of 2 position structures is installed for 2 times and adjusted.Owing to being two absolute construction installations, if while increasing flow area, need radial dimension larger, increase material and cost of production, if do not increase in the situation of whole high pressure radial dimension, flow area is less, and through-flow diameter d is 897.6mm, and, the side wall surface of one of them support ear of existing high pressure inner casing is 485mm place apart from admission distance between center line t, and high pressure inner casing and high pressure blade ring rigging position are 505mm apart from the distance of admission center line, causes high pressure blade ring installation amount of deflection large.
Model utility content
The utility model is that high pressure inner casing and the high pressure blade ring for solving existing 350MW steam turbine is two independent structures, processing is installed loaded down with trivial details, if increase flow area, need radial dimension larger, increase cost of production, if do not increase in the situation of whole high pressure radial dimension, flow area is less, and high pressure blade ring installs the large problem of amount of deflection, and then a kind of 350MW steam turbine Integral high-pressure inner casing is provided.
The utility model is to address the above problem the technological scheme of taking to be: 350MW steam turbine Integral high-pressure inner casing of the present utility model comprises high pressure inner casing and high pressure blade ring, the two is cast into high pressure inner casing and high pressure blade ring and is integrally formed high-pressure inner cylinder, the through-flow admission diameter of casting all-in-one-piece high-pressure inner cylinder is 983.5mm, and the side wall surface of one of them support platform is 682mm apart from the distance of admission center line.
The beneficial effects of the utility model are: the utility model is integrated former high-pressure inner cylinder and high pressure blade ring, and the two is removably connected and change the structure that one casting forming is a large inner casing into bolt 9, has reduced position structure, has saved radial space.Be reduced to a set of location and supporting structure by original two cover location and supporting structure, reduced installment work, integral production cost 40%.In the situation that radial dimension is constant, through-flow admission diameter is designed to 983.5mm by original 897.6mm, has improved widely flow area, and the through-current capability of steam has improved 10%.
When Integral high-pressure inner casing design of the present utility model, considered the large situation of former high pressure blade ring installation amount of deflection simultaneously, supporting location, to stretching out side adjustment, is increased to 682mm by former apart from admission center line 485mm, has eliminated original diaphragm housing ring the large problem of amount of deflection is installed.The utility model compact structure, saves radial space, can realize larger flow area; Reduce manufacturing procedure, save processing cost, reduce installation procedure, reduce installation period, installation period has shortened 60%.
Accompanying drawing explanation
Fig. 1 is high pressure inner casing and the high pressure blade ring linkage structure schematic diagram (steam inlet 3, septalium 5, support ear 6) in background technique, and Fig. 2 is the overall structure schematic diagram (steam inlet 3, septalium 5, support platform 7) of high-pressure inner cylinder of the present invention.
Embodiment
Embodiment one: in conjunction with Fig. 2 explanation, the 350MW steam turbine of present embodiment comprises high pressure inner casing 1 and high pressure blade ring 2 with Integral high-pressure inner casing, the two is cast into high pressure inner casing 1 and high pressure blade ring 2 and is integrally formed high-pressure inner cylinder, the through-flow admission diameter D of casting all-in-one-piece high-pressure inner cylinder is 983.5mm, and the side wall surface of one of them support platform 7 is 682mm apart from the distance L of admission center line.
Embodiment two: in conjunction with Fig. 2 explanation, high-pressure inner cylinder also comprises extraction opening 4 described in present embodiment, is equipped with on the excircle side of high-pressure inner cylinder of dividing plate and is processed with extraction opening 4.So arrange, be convenient to release and the use of the steam in high-pressure inner cylinder.Other is identical with embodiment one.
Claims (2)
1.350MW steam turbine Integral high-pressure inner casing, it comprises high pressure inner casing (1) and high pressure blade ring (2), it is characterized in that: the two is cast into high pressure inner casing (1) and high pressure blade ring (2) and is integrally formed high-pressure inner cylinder, the through-flow admission diameter (D) of casting all-in-one-piece high-pressure inner cylinder is 983.5mm, and the side wall surface of one of them support platform (7) is 682mm apart from the distance (L) of admission center line.
2. 350MW steam turbine Integral high-pressure inner casing according to claim 1, is characterized in that: described high-pressure inner cylinder also comprises extraction opening (4), is equipped with on the excircle side of high-pressure inner cylinder of dividing plate and is processed with extraction opening (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420093195.4U CN203685318U (en) | 2014-03-03 | 2014-03-03 | Integral type high-pressure inner cylinder for 350MW turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420093195.4U CN203685318U (en) | 2014-03-03 | 2014-03-03 | Integral type high-pressure inner cylinder for 350MW turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203685318U true CN203685318U (en) | 2014-07-02 |
Family
ID=51007233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420093195.4U Expired - Lifetime CN203685318U (en) | 2014-03-03 | 2014-03-03 | Integral type high-pressure inner cylinder for 350MW turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203685318U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105370329A (en) * | 2015-12-04 | 2016-03-02 | 哈尔滨汽轮机厂有限责任公司 | Novel integrated high-medium-pressure internal cylinder applied to supercritical steam turbine |
| CN114087042A (en) * | 2021-10-30 | 2022-02-25 | 中国长江动力集团有限公司 | Multifunctional steam turbine inner cylinder |
-
2014
- 2014-03-03 CN CN201420093195.4U patent/CN203685318U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105370329A (en) * | 2015-12-04 | 2016-03-02 | 哈尔滨汽轮机厂有限责任公司 | Novel integrated high-medium-pressure internal cylinder applied to supercritical steam turbine |
| CN114087042A (en) * | 2021-10-30 | 2022-02-25 | 中国长江动力集团有限公司 | Multifunctional steam turbine inner cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140702 |