CN106150570A - A kind of partition board of steam turbine and processing technique thereof - Google Patents
A kind of partition board of steam turbine and processing technique thereof Download PDFInfo
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- CN106150570A CN106150570A CN201510164257.5A CN201510164257A CN106150570A CN 106150570 A CN106150570 A CN 106150570A CN 201510164257 A CN201510164257 A CN 201510164257A CN 106150570 A CN106150570 A CN 106150570A
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Abstract
A kind of partition board of steam turbine and processing technique thereof, belong to partition board of steam turbine and manufacture field.Partition board of steam turbine includes half disk spacer, and the both sides of the blade of described half disk spacer are respectively interior shroud and peripheral band；Its height being positioned at the individual blade at split is more than the height of described split；Offering U-shaped otch respectively in described individual blade and described interior shroud, the junction of described peripheral band, the height of described U-shaped otch exceedes described split.The processing technique of above-mentioned partition board of steam turbine uses the method for full circle processing full circle welding, by cutting out U-shaped otch at the position to be cut being positioned at the individual blade at split in advance, the split overcoming whole circle processing dividing plate existence is not readily separated problem, decreases welding deformation, improves machining accuracy.
Description
Technical field
The present invention relates to partition board of steam turbine and manufacture field, particularly relate to a kind of partition board of steam turbine and processing work thereof
Skill.
Background technology
For the ease of problems such as the installation of rotor and centering centers, it is desirable to dividing plate must the most partly be installed separately,
The critical piece of partition board of steam turbine includes dividing plate inner and outer rings, inside and outside shroud, blade and clapboard body,
As illustrated in fig. 1 and 2, above-mentioned parts are two semicircles.Therefore in prior art, the processing work of dividing plate
Skill uses and first processes half disk spacer, arranges lacing wire, synthesis full circle welding between two and half disk spacers；Tool
The technical process of body is: the first step dividing plate internal ring is welded with leaf grating (leaf grating be the inside and outside shroud of dividing plate with
The assembly of blade)；Shroud, peripheral band at second step cutting leaf grating split；3rd step is by above-mentioned group
Part welds with dividing plate outer shroud, de-stress after completing, and then, removes lacing wire, by upper and lower for dividing plate half separately.
The dividing plate using semicircle processing in the method there is problems in that 1) upper and lower half shroud split position
Put dislocation big；2) cover degree (movable vane of the size welding deformation of inside and outside shroud, dividing plate leaf grating and moving vane
The height of import is referred to as cover degree always greater than the height of jet expansion, the difference in height between both) not,
Cause the situation of dividing plate steam admission side gear vapour, i.e. can not the most effectively send into movable vane from dividing plate air-flow out
In, affect the operational efficiency of unit.
Summary of the invention
It is an object of the invention to provide a kind of partition board of steam turbine and processing technique thereof, to solve above-mentioned semicircle
The deformation that processing technique causes is big, the problem that upper and lower half disk spacer split location dislocation is big.
Technical scheme is as follows:
A kind of partition board of steam turbine, including half disk spacer, in the both sides of the blade of described half disk spacer are respectively
Shroud and peripheral band；Its height being positioned at the individual blade at split is more than the height of described split；
U-shaped otch is offered respectively in described individual blade and described interior shroud, the junction of described peripheral band,
The height of described U-shaped otch exceedes described split.
The invention still further relates to the processing technique of above-mentioned partition board of steam turbine, comprise the following steps: be a, internal ring, outer
Ring and blade, by full circle blanking, be processed after the test of conditioned process performance；It is positioned at described dividing plate
Individual blade at split, cuts U-shaped cutting at described individual blade with the junction of interior shroud, peripheral band
Mouthful, the height of described U-shaped otch exceedes described split；B, by shroud and peripheral band in full circle processing；
C, interior shroud, peripheral band and vane group are dressed up leaf grating and welds；Again by internal ring, outer shroud and described leaf grating
Assemble and weld, obtain the first dividing plate；D, described first dividing plate are through de-stress process, line, chi
After very little detection, described in half finish turning, the inner circle of the first dividing plate, cylindrical and each end face, obtain second partition；e、
Described second partition, after dyeing inspection, is drawn split line on described second partition, and is detected each position
Size；Cut described split along described split line, obtain two and half disk spacers.
The invention has the beneficial effects as follows: the present invention uses the method for full circle processing full circle welding, adds with semicircle
Work is compared, dividing plate inner and outer rings and the processing of blade full circle, produces after can preventing welding to greatest extent
Deformation；And effectively eliminated welding stress before split cuts, solve split throat opening size
The scar that lower half shroud split location dislocation overproof, upper, split built-up welding part and lacing wire stay after removing
Trace these problems of abrasion to process tool, decrease welding deformation, improve machining accuracy.By in advance
First cut out U-shaped otch at the position to be cut being positioned at the individual blade at split, overcome whole circle processing
The split that dividing plate exists is not readily separated problem.
Accompanying drawing explanation
Fig. 1 is the part sectioned view of prior art dividing plate；
Fig. 2 is the structural representation of prior art median septum；
Fig. 3 is the structural representation of embodiment median septum；
Fig. 4 is the partial enlarged drawing of U-shaped otch on embodiment Leaf；
Fig. 5 is the processing process figure of partition board of steam turbine in embodiment；
Fig. 6 A and 6B is the structural representation of bevel for welding in embodiment.
Detailed description of the invention
In the following detailed description, a large amount of specific detail is proposed, in order to provide thorough understanding of the present invention.
However it will be understood by those of ordinary skill in the art that, even if not having these specific detail can implement the present invention yet.
In other cases, it is not described in well-known assembly, parts and structure, in order to avoid impact is to this
The understanding of invention.
The present invention is described in detail below in conjunction with the accompanying drawings.
As shown in Figures 3 and 4, the structural representation of the dividing plate of some illustrative embodiment according to.
Partition board of steam turbine in embodiment, including half disk spacer (being formed whole partition board of steam turbine by two semicircles),
The blade both sides of half disk spacer are respectively interior shroud and peripheral band；One end of split 10 is through two blades
Between, its other end is more than through individual blade, the height being positioned at the individual blade 31 at split 10
The height of split 10；Offer respectively with interior shroud 4, the junction of peripheral band 5 at individual blade 31
U-shaped otch 32, the height of U-shaped otch 32 is had to exceed split 10.
The processing process figure of the partition board of steam turbine of some illustrative embodiment according to as it is shown in figure 5,.
The processing technique of the partition board of steam turbine in above-described embodiment, comprises the following steps:
A, internal ring 1, outer shroud 2 and blade 3, by full circle blanking, carried out after the test of conditioned process performance
Roughing；Be positioned at the individual blade 31 at the split 10 of dividing plate, individual blade 31 and interior shroud 4,
U-shaped otch 32 is cut in the junction of peripheral band 5；
Modifier treatment be utilize quenching and this dual heat treatment of high tempering with obtain required intensity and
The technique of toughness, it is therefore an objective to obtain more preferable comprehensive mechanical performance is as higher in higher intensity and yield tensile ratio
Impact flexibility, relatively low brittle transition temperature and higher fatigue strength.Use in embodiment is quenched
Processing technique is technology commonly used in the art.
Owing to internal ring 1, the outer shroud 2 of the individual blade 31 at split 10 with dividing plate weld, through
On dividing plate horizontal center line, during along centrage line cutting split 10, it is impossible to injuring blade, blade needs
Keep complete, can not separate after cutting split 10, after ensureing the cutting of follow-up split line, dividing plate
Upper and lower two semicircles can be smoothly detached, and cuts out U-shaped cutting on the individual blade 31 of split 10 in advance
Mouth 32, height dividing plate split 10 to be crossed, when line cuts internal ring 1, outer shroud 2 to split 10 respectively
During the U-shaped otch 32 located, upper and lower semiclapboard natural separation, the individual blade 31 at split 10
Follow the semiclapboard self being not switched off.The width of U-shaped otch 32 is less than 1.5mm, Bu Huiying
Ring the work efficiency of blade.Preferably, blade 3 uses round steel blanking, after the test of conditioned process performance,
Carry out line cutting, polishing.
B, by shroud 4 and peripheral band 5 in full circle processing；
Preferably, interior shroud 4 and peripheral band 5 press full circle development size, and lower straight material after cutting, through curved
Bent circular, after correction circle, punching；To improve stock utilization and to reduce processing cost.
Preferably, the raw material of interior shroud 4 and peripheral band 5 uses cut, uses laser cutting machine tool
Special tooling clamping punches.
C, interior shroud 4, peripheral band 5 and blade 3 are assembled into leaf grating and weld；Again by internal ring 1, outer
Ring 2 and leaf grating assemble and weld, and obtain the first dividing plate；
Leaf grating includes interior shroud 4, peripheral band 5 and blade 3, three is assembled by drawing, due to often
Level dividing plate welding capacity is different, and version is different, and welding deformation amount is the most different, internal shroud, peripheral band
Method high-volume is taked in welding with steam passage, reduces the impact of welding deformation, it is ensured that the assembling of steam passage and dress
Weldering.These are the most all to connect relative to the whole lap welding of internal ring, outer shroud and take.Above-mentioned method high-volume
In i.e., shroud 4, peripheral band 5 and dividing plate internal ring 1, outer shroud 2 are adding man-hour, all in the original size of drawing
On the basis of, diameter amplifies a certain amount.Preferably, interior shroud 4 and the monolateral high-volume 2mm of internal ring 1, outward
Shroud 5 and the monolateral high-volume 1.5mm of outer shroud 2.
Internal ring 1, between outer shroud 2 and leaf grating, the size in gap directly affects the size of welding contracted quantity,
Gap is excessive, and shroud is not reaching to rigid support, and local has deformation；Gap is too small, assembling difficulty.Existing
Dividing plate is had all to use the way joining sweep body, i.e. straight according to the interior shroud 4 after leaf grating welding equipment, peripheral band 5
Footpath size, the diameter dimension that processing dividing plate internal ring 1, outer shroud 2 are corresponding, by monolateral clearance control at 0.5mm
In the range of.
D, described first dividing plate process through de-stress, line (i.e. checks staying of welding deformation and each machined surface
Amount situation also marks centering basal plane), after size detection, the inner circle of the first dividing plate, cylindrical described in half finish turning
With each machined surface, obtain second partition；
In embodiment, de-stress processes, the concrete technology of half finish turning all uses prior art, the portion of half finish turning
The monolateral made allowance 1mm in position；Size detection includes internal shroud, the dimension of inner and outer diameters of peripheral band and throat
Size checks；The position of half finish turning also includes packing groove, for the ease of processing, its car is become straight trough,
When last polish, its car is shaped.
E, described second partition, after dye penetration inspection, draw split line on described second partition, and
Detect the size at each position；Along split line cut split 10, obtain two and half disk spacers, through after place
After reason, obtain dividing plate.
In embodiment, the concrete technology of dye penetration inspection uses prior art, divides in drawing on second partition
Upper thread (depending on split line is according to split blade position), and check interior shroud, periphery
Band dimension of inner and outer diameters, lagging edge height, steam passage height and throat dimension and keep a record.Preferably
Ground, the cutting of split uses line cutting, second partition is separated into upper and lower two semicircles.
In embodiment, post processing includes successively: split repaiied by f, detection deflection, pincers；G, upper boring machine,
Milling split key, centering ring and conjunction groove, end key；Mid-separate surface seal key repaiied by pincers, attaches together split, uses
Clearance gauge checks that split gap cannot be greater than 0.05mm；H, upper vertical car, the inner circle of finish turning half disk spacer,
Excircle dimension, open grade size and packing groove；I, last finish turn inspection.
As shown in Figure 6 A and 6B, the structural representation of the bevel for welding of some illustrative embodiment according to.
Welding in above-described embodiment uses narrow gap welding, the degree of bevel for welding (as shown in Figure 6A)
Number is 1 degree, reduces welding capacity and can effectively reduce the negative effect that welding brings.Prior art (as
Shown in Fig. 6 B) number of degrees of bevel for welding are 15 degree, welding capacity is big, aggravation deformation tendency.
In prior art, the processing of employing semicircle there is problems: 1) deformation concentrates on dividing plate split position
Putting (junctions of i.e. two and half disk spacers), split position welding deformation is big, split repair welding position
Weldquality is bad；2) intensity and the rigidity of lacing wire is far below plate body；3) throat opening (adjacent leaf in leaf grating
Between sheet, the minimum widith of passage is throat opening) it is related to the efficiency of product, due to blade special at split
Position, and the factor such as welding deformation, cause the blade at split and the throat opening between former and later two blades
Undesirable；4) weld, due to half-turn, the weld bond out-of-flatness causing split to deform everywhere and at split,
So built-up welding re-works split after needing welding, therefore, split built-up welding part strengthens process tool
Abrasion.And in the application whole circle add carefully and neatly done lap welding and connect be entirely in whole processing and welding process whole
Circle, there is not split, until after line cutting split completes, dividing plate being divided into upper and lower two halves,
Just can be seen that split, there is not semicircle and process the problems referred to above caused.
Claims (10)
1. a partition board of steam turbine, including half disk spacer, the both sides of the blade of described half disk spacer are respectively
Interior shroud and peripheral band；Its height being positioned at the individual blade at split is more than the height of described split；
It is characterized in that, offer respectively with described interior shroud, the junction of described peripheral band at described individual blade
U-shaped otch, the height of described U-shaped otch is had to exceed described split.
2. partition board of steam turbine as claimed in claim 1, it is characterised in that the width of described U-shaped otch
Degree is less than 1.5mm.
3. the processing technique of partition board of steam turbine as claimed in claim 1 or 2, comprises the following steps:
A, internal ring, outer shroud and blade, by full circle blanking, be processed after the test of conditioned process performance；
It is positioned at the individual blade at the split of described dividing plate, in described individual blade and interior shroud, peripheral band
U-shaped otch is cut in junction, and the height of described U-shaped otch exceedes described split；
B, by shroud and peripheral band in full circle processing；
C, interior shroud, peripheral band and vane group are dressed up leaf grating and welds；Again by internal ring, outer shroud and described
Leaf grating assembles and welds, and obtains the first dividing plate；
D, described first dividing plate process through de-stress, line, after size detection, described in half finish turning first every
The inner circle of plate, cylindrical and each end face, obtain second partition；
E, described second partition, after dyeing inspection, are drawn split line on described second partition, and are detected
The size at each position；Cut described split along described split line, obtain two and half disk spacers.
4. processing technique as claimed in claim 3, it is characterised in that in step a, described blade
Processing uses line cutting；In step b, described interior shroud, the processing of described peripheral band use cut.
5. processing technique as claimed in claim 3, it is characterised in that in step b, described interior shroud
Pressing full circle development size with described peripheral band, after cutting, lower straight material, through bending to circle, and corrects.
6. processing technique as claimed in claim 3, it is characterised in that in step c, enclose in described
Method high-volume is taked in the welding of band, described peripheral band and steam passage；Described internal ring, described outer shroud and described
Gap between leaf grating is less than 0.5mm.
7. processing technique as claimed in claim 3, it is characterised in that the welding slope of all welding positions
Mouth is 1 degree.
8. processing technique as claimed in claim 3, it is characterised in that in step e, described split
Cutting use line cutting.
9. processing technique as claimed in claim 3, it is characterised in that the dividing plate in step e also need through
Later processing, described post processing includes successively: split repaiied by f, detection deflection, pincers；G, upper boring machine,
Milling split key, centering ring and conjunction groove, end key；Mid-separate surface seal key repaiied by pincers, attaches together split, uses
Clearance gauge checks that split gap cannot be greater than 0.05mm；H, upper vertical car, the inner circle of finish turning half disk spacer,
Excircle dimension, open grade size and packing groove；I, last finish turn inspection.
10. processing technique as claimed in claim 9, it is characterised in that described packing groove is in step d
In half finish turning first its car is become straight trough, again its car is shaped in step h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510164257.5A CN106150570B (en) | 2015-04-09 | 2015-04-09 | steam turbine partition plate and processing technology thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510164257.5A CN106150570B (en) | 2015-04-09 | 2015-04-09 | steam turbine partition plate and processing technology thereof |
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| CN106150570A true CN106150570A (en) | 2016-11-23 |
| CN106150570B CN106150570B (en) | 2019-12-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510164257.5A Active CN106150570B (en) | 2015-04-09 | 2015-04-09 | steam turbine partition plate and processing technology thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108457711A (en) * | 2018-04-28 | 2018-08-28 | 黎明职业大学 | A kind of new and effective welded type partition board |
| CN108818368A (en) * | 2018-06-20 | 2018-11-16 | 哈尔滨汽轮机厂有限责任公司 | A kind of assembling jig and assembly method for insertion slot type partition |
| CN109848593A (en) * | 2019-03-19 | 2019-06-07 | 哈尔滨汽轮机厂有限责任公司 | A method of eliminating the closing in deformation of steam turbine low-pressure hollow shelf outer ring split |
| CN110102970A (en) * | 2019-04-25 | 2019-08-09 | 沈阳透平机械股份有限公司 | A kind of processing method of centrifugal compressor partition |
| CN113579661A (en) * | 2021-08-23 | 2021-11-02 | 成都市新美加机械设备制造有限公司 | Partition plate processing technology |
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| CN102606224A (en) * | 2011-12-19 | 2012-07-25 | 山东青能动力股份有限公司 | Impulse steam turbine welding partition board with embedded fixed blades and assembling process of impulse steam turbine welding partition board |
| CN202493301U (en) * | 2012-03-19 | 2012-10-17 | 山东齐鲁电机制造有限公司 | Novel clapboard blade division structure |
| CN204041135U (en) * | 2014-07-02 | 2014-12-24 | 中国长江动力集团有限公司 | Novel partition structure |
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| JPS57179306A (en) * | 1981-04-27 | 1982-11-04 | Hitachi Ltd | Steam turbine nozzle diaphragm |
| CN102606224A (en) * | 2011-12-19 | 2012-07-25 | 山东青能动力股份有限公司 | Impulse steam turbine welding partition board with embedded fixed blades and assembling process of impulse steam turbine welding partition board |
| CN202493301U (en) * | 2012-03-19 | 2012-10-17 | 山东齐鲁电机制造有限公司 | Novel clapboard blade division structure |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108457711A (en) * | 2018-04-28 | 2018-08-28 | 黎明职业大学 | A kind of new and effective welded type partition board |
| CN108818368A (en) * | 2018-06-20 | 2018-11-16 | 哈尔滨汽轮机厂有限责任公司 | A kind of assembling jig and assembly method for insertion slot type partition |
| CN109848593A (en) * | 2019-03-19 | 2019-06-07 | 哈尔滨汽轮机厂有限责任公司 | A method of eliminating the closing in deformation of steam turbine low-pressure hollow shelf outer ring split |
| CN109848593B (en) * | 2019-03-19 | 2021-02-12 | 哈尔滨汽轮机厂有限责任公司 | Method for eliminating steam turbine low-pressure hollow partition plate outer ring middle split surface closing-up deformation |
| CN110102970A (en) * | 2019-04-25 | 2019-08-09 | 沈阳透平机械股份有限公司 | A kind of processing method of centrifugal compressor partition |
| CN110102970B (en) * | 2019-04-25 | 2020-12-29 | 沈阳透平机械股份有限公司 | Method for processing centrifugal compressor partition plate |
| CN113579661A (en) * | 2021-08-23 | 2021-11-02 | 成都市新美加机械设备制造有限公司 | Partition plate processing technology |
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