CN204041135U - Novel partition structure - Google Patents
Novel partition structure Download PDFInfo
- Publication number
- CN204041135U CN204041135U CN201420366611.3U CN201420366611U CN204041135U CN 204041135 U CN204041135 U CN 204041135U CN 201420366611 U CN201420366611 U CN 201420366611U CN 204041135 U CN204041135 U CN 204041135U
- Authority
- CN
- China
- Prior art keywords
- dividing plate
- boss
- stator blade
- bevel shape
- groove
- 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.)
- Expired - Lifetime
Links
- 238000005192 partition Methods 0.000 title claims abstract description 11
- 230000002093 peripheral effect Effects 0.000 claims abstract description 7
- 230000000694 effects Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 10
- 238000003466 welding Methods 0.000 description 9
- 230000003068 static effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000003754 machining Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The utility model relates to a kind of Novel partition structure, it is characterized in that: weld a socket in the peripheral band of every semiclapboard split stator blade lagging edge respectively with dividing plate outer shroud jointing place and form a boss, the groove corresponding with boss is milled out in the relevant position of second half dividing plate corresponding, in every semiclapboard split stator blade lagging edge, shroud welds a spigot with dividing plate inner ring jointing place and forms another boss, another groove corresponding with another boss is milled out in the relevant position of second half dividing plate corresponding, when two semiclapboards close up, each boss falls into corresponding groove, stator blade lagging edge is exceeded the portion envelops of split.The utility model has structure simple, avoids second space bar stator blade to misplace the negative effect brought to steam flow.
Description
Technical field
The utility model relates to a kind of Novel partition structure, is applicable to the welding Shround-band type dividing plate of the high pressure section in steam turbine, makes dividing plate split place break blade.
Background technique
Steam turbine central diaphragm is main static part, and by conversion of heat into kinetic energy in its static cascade, steam flow rate is fast, and blade profile is streamlined, and runner wall should be smooth, has a direct impact the efficiency of dividing plate.And dividing plate adopts level to form-separating, split can pass through blade profile, present welding Shround-band type dividing plate generally adopts brokenly the method for blade, namely on dividing plate, second can each many a slices stator blade, directly the part exceeding stator blade split is machined away during work in-process point face, go up second like this and respectively have half stator blade, upper and lower semi-synthetic complete stator blade during assembling.But this method not only can make every grade of multiplex two panels stator blade of dividing plate, stator blade herein also can be allowed to be subject to the impact of the factors such as assembling dislocation and machining error, to destroy the slickness of split place steam passage, thus cause negative effect to the efficiency of steam turbine.
Summary of the invention
The purpose of this utility model is in order to overcome above-mentioned prior art Problems existing, a kind of Novel partition structure is provided, can be good at meeting the requirement of industrial steam turbine to steam passage slickness, ensure the integrity of stator blade, reduce and use stator blade quantity, improve the efficiency of steam turbine, its structure is simple, easy to make.
Realizing the technical solution of the utility model is:
Novel partition structure, it is characterized in that: weld a socket in the peripheral band of every semiclapboard split stator blade lagging edge respectively with dividing plate outer shroud jointing place and form a boss, the groove corresponding with boss is milled out in the relevant position of second half dividing plate corresponding, in every semiclapboard split stator blade lagging edge, shroud welds a spigot with dividing plate inner ring jointing place and forms another boss, another groove corresponding with another boss is milled out in the relevant position of second half dividing plate corresponding, when two semiclapboards close up, each boss falls into corresponding groove, stator blade lagging edge is exceeded the portion envelops of split.
The bevel shape of described socket is identical with the bevel shape on dividing plate outer shroud with the bevel shape of peripheral band.
The bevel shape of described spigot is identical with the bevel shape in dividing plate inner ring with the bevel shape of interior shroud.
Described bevel shape makes the triangle bevel shape of 45° angle.
The gap width of described boss and groove controls between 0 ~ 0.5mm.
The utility model increases the position that the shroud of two butt joints in stator blade lagging edge position, dividing plate split place and dividing plate inside and outside ring join in welding process, boss is defined after having welded, stator blade lagging edge is exceeded the portion envelops of split, owing to adding man-hour, joint is processed into respective shapes, and groove corresponding is with it milled out in the opposite side relevant position of dividing plate, the shape of groove is identical with boss, size is slightly larger than boss, when dividing plate partly closes up up and down, the joint of projection falls into groove, leave certain gap between the two, not only ensure the laminating of split but also ensure the complete of stator blade.It is simple that the utility model has structure, avoids second space bar stator blade to misplace the negative effect brought to steam flow.
Accompanying drawing explanation
Fig. 1 a is dividing plate joint working drawing of the present utility model.
Fig. 1 b is the B direction view of Fig. 1 a.
Fig. 1 c is the A direction view of Fig. 1 a.
Fig. 2 a is a semiclapboard welding schematic diagram of the present utility model.
Fig. 2 b is the C direction view of Fig. 2 a.
Fig. 3 a is socket of the present utility model and dividing plate outer shroud schematic diagram.
Fig. 3 b is spigot of the present utility model and dividing plate inner ring schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail:
As shown in Figure 3 a, 3 b, the joint of welding is two little cuboid blocks, process two bevel for weldings respectively to form, wherein identical with the groove on the bevel shape that shroud welds and dividing plate inside and outside ring, make the triangle groove (inclination direction being respectively used to this groove of joint of inner ring and outer shroud is different) of 45° angle from the groove that inside and outside ring plate body welds, two groove cross sections are mutually vertical.The structure of joint is simple, and volume is little, and it is two right that every grade of dividing plate uses at most.
As shown in Fig. 2 a, Fig. 2 b, the utility model welds a socket 2 in the peripheral band 3 of every semiclapboard split stator blade 4 lagging edge respectively with dividing plate outer shroud 1 jointing place and forms a boss, the groove corresponding with boss is milled out in the relevant position of second half dividing plate corresponding, in every semiclapboard split stator blade 4 lagging edge, shroud 5 welds a spigot 6 with dividing plate inner ring 7 jointing place and forms another boss, mill out another groove corresponding with another boss in the relevant position of second half dividing plate corresponding, when two semiclapboards close up, each boss falls into corresponding groove.The gap width of described boss and groove controls between 0 ~ 0.5mm.The bevel shape of described socket is identical with the bevel shape on dividing plate outer shroud with the bevel shape of peripheral band; The bevel shape of described spigot is identical with the bevel shape in dividing plate inner ring with the bevel shape of interior shroud; Described bevel shape makes the triangle bevel shape of 45° angle.As shown in Figure 3 a, 3 b.
A postwelding is ajusted at the static cascade and dividing plate inside and outside ring position that weld Shround-band type dividing plate, welded joint is placed position as shown in Figure 2, groove on the groove welded with shroud and dividing plate inner ring or outer shroud overlaps, the tip of triangle groove againsts the split of the plate body of dividing plate inner ring or outer shroud, and herein it is put respectively be welded in dividing plate inner ring and outer shroud split on.In the lump the weld seam of joint is filled up when the weld seam of sealing weld static cascade and dividing plate inside and outside ring again.Simple to operate, in original welding procedure step, only increase the first step of spot welding.After having welded, the boss that stator blade lagging edge on dividing plate split two of being formed are square, exceeds the portion envelops of split by stator blade lagging edge.
Finally two square boss that split after welding is formed are processed into shape as shown in Fig. 1 a, Fig. 1 b, Fig. 1 c, corresponding groove is milled out in the steam passage same position of opposite side, shape is identical with boss, and makes the size of groove slightly larger than boss size, and groove should avoid stator blade herein.When dividing plate partly closes up up and down, boss falls into groove, controls the gap of boss and groove and controls between 0 ~ 0.5mm by its gap width, reduce the gap of steam output side on shroud as far as possible by the method controlling tolerance.Although higher to requirement on machining accuracy herein, its amount of finish single is little.
The utility model effectively avoids split place and adopts broken stator blade method to process the negative effect brought to steam turbine, and has and use material few, and structure is simple, easy to operate and saved the advantages such as stator blade.
Claims (5)
1. Novel partition structure, it is characterized in that: weld a socket in the peripheral band of every semiclapboard split stator blade lagging edge respectively with dividing plate outer shroud jointing place and form a boss, the groove corresponding with boss is milled out in the relevant position of second half dividing plate corresponding, in every semiclapboard split stator blade lagging edge, shroud welds a spigot with dividing plate inner ring jointing place and forms another boss, another groove corresponding with another boss is milled out in the relevant position of second half dividing plate corresponding, when two semiclapboards close up, each boss falls into corresponding groove, stator blade lagging edge is exceeded the portion envelops of split.
2. Novel partition structure according to claim 1, is characterized in that: the bevel shape of described socket is identical with the bevel shape on dividing plate outer shroud with the bevel shape of peripheral band.
3. Novel partition structure according to claim 1, is characterized in that: the bevel shape of described spigot is identical with the bevel shape in dividing plate inner ring with the bevel shape of interior shroud.
4. the Novel partition structure according to Claims 2 or 3, is characterized in that: described bevel shape makes the triangle bevel shape of 45° angle.
5. Novel partition structure according to claim 1, is characterized in that: the gap width of described boss and groove controls between 0 ~ 0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420366611.3U CN204041135U (en) | 2014-07-02 | 2014-07-02 | Novel partition structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420366611.3U CN204041135U (en) | 2014-07-02 | 2014-07-02 | Novel partition structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204041135U true CN204041135U (en) | 2014-12-24 |
Family
ID=52241813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420366611.3U Expired - Lifetime CN204041135U (en) | 2014-07-02 | 2014-07-02 | Novel partition structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204041135U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106150570A (en) * | 2015-04-09 | 2016-11-23 | 北京北重汽轮电机有限责任公司 | A kind of partition board of steam turbine and processing technique thereof |
| CN111230414A (en) * | 2020-01-15 | 2020-06-05 | 哈尔滨汽轮机厂有限责任公司 | Method for assembling turbine partition plate cascade with forward and reverse integrated structure |
-
2014
- 2014-07-02 CN CN201420366611.3U patent/CN204041135U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106150570A (en) * | 2015-04-09 | 2016-11-23 | 北京北重汽轮电机有限责任公司 | A kind of partition board of steam turbine and processing technique thereof |
| CN106150570B (en) * | 2015-04-09 | 2019-12-06 | 北京北重汽轮电机有限责任公司 | steam turbine partition plate and processing technology thereof |
| CN111230414A (en) * | 2020-01-15 | 2020-06-05 | 哈尔滨汽轮机厂有限责任公司 | Method for assembling turbine partition plate cascade with forward and reverse integrated structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |