CN108620926B - A kind of processing method of steam turbine high-pressure cylinder gas exhaust piping changeover portion - Google Patents
A kind of processing method of steam turbine high-pressure cylinder gas exhaust piping changeover portion Download PDFInfo
- Publication number
- CN108620926B CN108620926B CN201810350946.9A CN201810350946A CN108620926B CN 108620926 B CN108620926 B CN 108620926B CN 201810350946 A CN201810350946 A CN 201810350946A CN 108620926 B CN108620926 B CN 108620926B
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- China
- Prior art keywords
- changeover portion
- positioning seat
- welding groove
- compression bar
- connecting rod
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/12—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for securing to a spindle in general
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q2703/00—Work clamping
- B23Q2703/02—Work clamping means
- B23Q2703/10—Devices for clamping workpieces of a particular form or made from a particular material
-
- 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
- F01D25/30—Exhaust heads, chambers, or the like
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
A kind of processing method of steam turbine high-pressure cylinder gas exhaust piping changeover portion, it is related to steam turbine technology field.The present invention solves existing changeover portion in turning groove chamfering, and there are system of processing rigidity deficiencies, the problem of influencing the dimensional uniformity of groove circumferentially, and influence changeover portion processing quality.The positioning seat of changeover portion auxiliary compaction tool of the present invention is fixed in the center through hole of adaptor socket body for machine tool, the center of positioning seat opens up threaded hole, compression bar is vertically arranged in the side of changeover portion, the center of compression bar opens up through-hole, connecting rod is that both ends are equipped with externally threaded rod-like structure, one end of connecting rod is threadedly coupled with positioning seat, and the other end of connecting rod is across compression bar and affixed by locking nut and compression bar.The present invention is used for turning changeover portion groove chamfering, effectively improves installation accuracy and clamping accuracy, and welding groove radial dimension precision reaches within 0.1mm, ensure that the processing quality of changeover portion.
Description
Technical field
The present invention relates to steam turbine technology fields, more particularly to a kind of processing of steam turbine high-pressure cylinder gas exhaust piping changeover portion
Method.
Background technique
Changeover portion is the transition portion of steam turbine high-pressure cylinder gas exhaust piping, and the end of changeover portion is equipped with welds with both ends pipeline
The welding groove of one, it is outstanding deep larger when turning groove chamfering since changeover portion is longer, so that system of processing rigidity is insufficient, shadow
The dimensional uniformity of groove circumferentially is rung, changeover portion processing quality is influenced.
In conclusion existing changeover portion, in turning groove chamfering, there are system of processing rigidity deficiencies, groove edge is influenced
The dimensional uniformity of circumference, and the problem of influence changeover portion processing quality.
Summary of the invention
The purpose of the present invention is to solve existing changeover portions in turning groove chamfering, and there are system of processing rigidity not
Foot influences the dimensional uniformity of groove circumferentially, and the problem of influence changeover portion processing quality, and then provides a kind of steam turbine
The processing method of high pressure cylinder gas exhaust piping changeover portion.
The technical scheme is that
A kind of steam turbine high-pressure cylinder gas exhaust piping changeover portion assists compaction tool, it include positioning seat, compression bar, connecting rod and
Locking nut, positioning seat are fixed in the center through hole of adaptor socket body for machine tool, and the center of positioning seat opens up threaded hole, and compression bar is perpendicular
The side of changeover portion is directly set, the center of compression bar opens up through-hole, and connecting rod is that both ends are equipped with externally threaded rod-like structure,
One end of connecting rod is threadedly coupled with positioning seat, and the other end of connecting rod is across compression bar and affixed by locking nut and compression bar.
Further, positioning seat is constituted by integrated the first cylinder and the second cylinder is made, the outer diameter and machine of the first cylinder
The center through hole internal diameter of bed chuck body is consistent, and the outer diameter of the second cylinder is greater than the center through hole internal diameter of adaptor socket body for machine tool.
Further, the length of compression bar is greater than the maximum inner diameter of changeover portion.
Further, the length of connecting rod is greater than the length of changeover portion.
A method of steam turbine high-pressure cylinder gas exhaust piping changeover portion, a kind of use are processed using auxiliary compaction tool
The method for assisting compaction tool processing steam turbine high-pressure cylinder gas exhaust piping changeover portion is realized by following steps,
Step 1: cast blank；
Step 2: ultrasonic examination processing is carried out to cast blank, to examine blank cast inside quality；
Step 3: fixed changeover portion:
Firstly, positioning seat is mounted in the center through hole of adaptor socket body for machine tool, external pull rod and positioning seat left end are utilized
Threaded hole cooperation tenses positioning seat on adaptor socket body for machine tool,
Then, using machine chuck pawl radial clamping changeover portion left end outer circle,
Finally, using compression bar, connecting rod and locking nut by changeover portion axial compression on adaptor socket body for machine tool, complete transition
The fixation of section；
Step 4: turning changeover portion both ends outer circle and welding groove chamfering:
Using lathe turning changeover portion right end outer circle and the first welding groove chamfering and the second welding groove chamfering, process
Using same installation way turning changeover portion left end outer circle and third welding groove chamfering and the 4th welding groove chamfering after finishing；
Step 5: changeover portion magnetic powder inspection is handled:
Magnetic powder inspection is carried out to changeover portion both ends size and welding groove chamfering, to guarantee changeover portion appearance after turning
Face processing quality zero defect；
Step 6: pincers worker, by all seamed edge roundings of changeover portion, printed drawings labelled notation so far completes the processing of changeover portion.
Further, the processing diameter of the outer circle of changeover portion right end described in step 4 is Φ1, Φ1=553mm, the first weldering
The machining angle for connecing groove chamfering is α1, α1=45 °, the machining angle of the second welding groove chamfering is α2, α2=20 °.
Further, the processing diameter of the outer circle of changeover portion left end described in step 4 is Φ2, Φ2=508mm, third weldering
Meet the machining angle α of groove chamfering3, α3=45 °, the machining angle α of the 4th welding groove chamfering4, α4=37.5 °.
The present invention has the effect that compared with prior art
1, the method for use of the invention auxiliary compaction tool processing steam turbine high-pressure cylinder gas exhaust piping changeover portion, through reality
Using acquirement good result.When turning changeover portion welding groove chamfering, changeover portion is radially clamped using machine chuck pawl, even
By changeover portion along the clamping mode being pressed on machine chuck is axially assisted, this processing method has for extension bar, compression bar and locking nut
Effect ground improves installation accuracy and clamping accuracy, and when turning welding groove, radial dimension precision ensure that up within 0.1mm
Cross the processing quality of section.
2, present invention auxiliary compaction tool structure is simple, easy to process, easy to spread, has preferable economic value.
Detailed description of the invention
Fig. 1 is the machining sketch chart of changeover portion；
Fig. 2 is the side view of Fig. 1；
Fig. 3 is the structural schematic diagram of positioning seat；
Fig. 4 is the structural schematic diagram of compression bar；
Fig. 5 is cross-sectional view of the Fig. 4 at A-A；
Fig. 6 is the structural schematic diagram of connecting rod；
Fig. 7 is the structural schematic diagram of changeover portion；
Fig. 8 is partial enlarged view of the Fig. 7 at M；
Fig. 9 is partial enlarged view of the Fig. 7 at N.
Specific embodiment
Specific embodiment 1: illustrating present embodiment, a kind of turbine high-pressure of present embodiment in conjunction with Fig. 1 and Fig. 2
Cylinder gas exhaust piping changeover portion assists compaction tool, it includes positioning seat 1, compression bar 2, connecting rod 3 and locking nut 4, and positioning seat 1 is solid
It is scheduled in the center through hole of adaptor socket body for machine tool 6, the center of positioning seat 1 opens up threaded hole, and compression bar 2 is vertically arranged in changeover portion
5 side, the center of compression bar 2 open up through-hole, and connecting rod 3 is that both ends are equipped with externally threaded rod-like structure, and the one of connecting rod 3
End is threadedly coupled with positioning seat 1, and the other end of connecting rod 3 is across compression bar 2 and affixed by locking nut 4 and compression bar 2.
Specific embodiment 2: embodiment is described with reference to Fig. 3, the positioning seat 1 of present embodiment is integrated by being made
First cylinder 1-1 and the second cylinder 1-2 is constituted, the outer diameter of the first cylinder 1-1 and the center through hole internal diameter one of adaptor socket body for machine tool 6
It causes, the outer diameter of the second cylinder 1-2 is greater than the center through hole internal diameter of adaptor socket body for machine tool 6.So set, positioning seat 1 is mounted on machine
In the center through hole of bed chuck body 6, positioning seat 1 is tensed in machine using external pull rod and the cooperation of the threaded hole of 1 left end of positioning seat
On bed chuck body 6, the shoulder that the first cylinder 1-1 and the second cylinder 1-2 are constituted plays the role of positioning.Other compositions and connection are closed
It is same as the specific embodiment one.
Specific embodiment 3: illustrating that present embodiment, the length of the compression bar 2 of present embodiment are greater than in conjunction with Fig. 4 and Fig. 5
The maximum inner diameter of changeover portion 5.So set, compression bar 2 is avoided to enter in the inner hole of changeover portion 5, axial compression mistake can not be played
Cross the effect of section 5.Other compositions and connection relationship are the same as one or two specific embodiments.
Specific embodiment 4: illustrating that present embodiment, the length of the connecting rod 3 of present embodiment are big in conjunction with Fig. 6 and Fig. 7
In the length of changeover portion 5.So set, one end of connecting rod 3 and positioning seat 1 are affixed, the other end of connecting rod 3 passes through compression bar 2,
And the radial compaction of changeover portion 5 is realized by locking nut 4.Other compositions and connection relationship and specific embodiment one, two or
Three is identical.
Specific embodiment 5: illustrating present embodiment in conjunction with Fig. 1 and Fig. 2, a kind of of present embodiment uses auxiliary pressure
The method of clamping tool processing steam turbine high-pressure cylinder gas exhaust piping changeover portion, it is characterised in that: a kind of use assists compressing work
The method of tool processing steam turbine high-pressure cylinder gas exhaust piping changeover portion is realized by following steps,
Step 1: cast blank；
Step 2: ultrasonic examination processing is carried out to cast blank, to examine blank cast inside quality；
Step 3: fixed changeover portion 5:
Firstly, positioning seat 1 is mounted in the center through hole of adaptor socket body for machine tool 6, external pull rod and 1 left end of positioning seat are utilized
Threaded hole cooperation by positioning seat 1 tense on adaptor socket body for machine tool 6,
Then, using 7 radial clamping changeover portion of machine chuck pawl, 5 left end outer circle,
Finally, using compression bar 2, connecting rod 3 and locking nut 4 by 5 axial compression of changeover portion on adaptor socket body for machine tool 6, it is complete
At the fixation of changeover portion 5；
Step 4: 5 both ends outer circle of turning changeover portion and welding groove chamfering:
Using 5 right end outer circle of lathe turning changeover portion and the first welding groove chamfering and the second welding groove chamfering, processing
After fallen using same 5 left end outer circle of installation way turning changeover portion and third welding groove chamfering and the 4th welding groove
Angle；
Step 5: 5 magnetic powder inspection of changeover portion is handled:
Magnetic powder inspection is carried out to 5 both ends size of changeover portion and welding groove chamfering, to guarantee after turning outside changeover portion 5
Suface processing quality zero defect；
Step 6: pincers worker, by all seamed edge roundings of changeover portion 5, printed drawings labelled notation so far completes adding for changeover portion 5
Work.
Specific embodiment 6: illustrate present embodiment in conjunction with Fig. 7 and Fig. 9, four the step of present embodiment described in
The processing diameter of 5 right end outer circle of changeover portion is Φ1, Φ1=553mm, the machining angle α of the first welding groove chamfering1, α1=
45 °, the machining angle α of the second welding groove chamfering2, α2=20 °.Other compositions and connection relationship and specific embodiment one,
Two, three, four or five are identical.
Specific embodiment 7: illustrate present embodiment in conjunction with Fig. 7 and Fig. 8, four the step of present embodiment described in
The processing diameter of phi of 5 left end outer circle of changeover portion2, Φ2=508mm, the machining angle α of third welding groove chamfering3, α3=45 °,
The machining angle α of 4th welding groove chamfering4, α4=37.5 °.Other compositions and connection relationship and specific embodiment one, two,
Three, four, five or six are identical.
Claims (3)
1. a kind of processing method of steam turbine high-pressure cylinder gas exhaust piping changeover portion, the method processes vapour using auxiliary compaction tool
Turbine high pressure cylinder gas exhaust piping changeover portion, auxiliary compaction tool includes positioning seat (1), compression bar (2), connecting rod (3) and locking screw
Female (4), positioning seat (1) are fixed in the center through hole of adaptor socket body for machine tool (6), and the center of positioning seat (1) opens up threaded hole,
Compression bar (2) is vertically arranged in the side of changeover portion (5), and the center of compression bar (2) opens up through-hole, and connecting rod (3) sets for both ends
There is externally threaded rod-like structure, one end of connecting rod (3) is threadedly coupled with positioning seat (1), and the other end of connecting rod (3) passes through pressure
Bar (2) is simultaneously affixed by locking nut (4) and compression bar (2)；
It is characterized by: a kind of processing method of steam turbine high-pressure cylinder gas exhaust piping changeover portion is realized by following steps
,
Step 1: cast blank；
Step 2: ultrasonic examination processing is carried out to cast blank, to examine blank cast inside quality；
Step 3: fixed changeover portion (5):
Firstly, positioning seat (1) is mounted in the center through hole of adaptor socket body for machine tool (6), it is left using external pull rod and positioning seat (1)
The threaded hole cooperation at end tenses positioning seat (1) on adaptor socket body for machine tool (6),
Then, using machine chuck pawl (7) radial clamping changeover portion (5) left end outer circle,
Finally, using compression bar (2), connecting rod (3) and locking nut (4) by changeover portion (5) axial compression in adaptor socket body for machine tool (6)
On, complete the fixation of changeover portion (5)；
Step 4: turning changeover portion (5) both ends outer circle and welding groove chamfering:
Using lathe turning changeover portion (5) right end outer circle and the first welding groove chamfering and the second welding groove chamfering, process
It is fallen after finishing using same installation way turning changeover portion (5) left end outer circle and third welding groove chamfering and the 4th welding groove
Angle；
Step 5: changeover portion (5) magnetic powder inspection is handled:
Magnetic powder inspection is carried out to changeover portion (5) both ends size and welding groove chamfering, outside with changeover portion (5) after guaranteeing turning
Suface processing quality zero defect；
Step 6: pincers worker, by all seamed edge roundings of changeover portion (5), printed drawings labelled notation so far completes adding for changeover portion (5)
Work.
2. a kind of processing method of steam turbine high-pressure cylinder gas exhaust piping changeover portion according to claim 1, it is characterised in that:
The processing diameter of changeover portion described in step 4 (5) right end outer circle is Φ1, Φ1=553mm, the first welding groove chamfering add
Work angle [alpha]1, α1=45 °, the machining angle α of the second welding groove chamfering2, α2=20 °.
3. a kind of processing method of steam turbine high-pressure cylinder gas exhaust piping changeover portion according to claim 1 or 2, feature exist
In: the processing diameter of phi of changeover portion described in step 4 (5) left end outer circle2, Φ2=508mm, third welding groove chamfering
Machining angle α3, α3=45 °, the machining angle α of the 4th welding groove chamfering4, α4=37.5 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810350946.9A CN108620926B (en) | 2018-04-18 | 2018-04-18 | A kind of processing method of steam turbine high-pressure cylinder gas exhaust piping changeover portion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810350946.9A CN108620926B (en) | 2018-04-18 | 2018-04-18 | A kind of processing method of steam turbine high-pressure cylinder gas exhaust piping changeover portion |
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| Publication Number | Publication Date |
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| CN108620926A CN108620926A (en) | 2018-10-09 |
| CN108620926B true CN108620926B (en) | 2019-11-19 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102009363A (en) * | 2010-11-29 | 2011-04-13 | 大连名阳实业有限公司 | Thin-wall piece lathe clamp |
| CN202356947U (en) * | 2011-12-09 | 2012-08-01 | 中山火炬职业技术学院 | Special fixture for lathe machining of thin-walled disc type workpieces |
| CN103231074A (en) * | 2013-04-18 | 2013-08-07 | 哈尔滨汽轮机厂有限责任公司 | Machining method of inner circle and outer circle of elastic ring provided with opening and made of high temperature alloy |
| CN204135771U (en) * | 2014-09-04 | 2015-02-04 | 上海中船三井造船柴油机有限公司 | For the anti-deformation built-up jig of turning thin-wall workpiece |
| CN104924137A (en) * | 2015-07-13 | 2015-09-23 | 株洲齿轮有限责任公司 | Clamp assembly for finish machining of thin-wall ring columnar part and machining method |
| CN105563152A (en) * | 2014-11-07 | 2016-05-11 | 三峡大学 | Clamp for processing thin-wall bush |
| CN206484022U (en) * | 2017-02-15 | 2017-09-12 | 安徽科幂机械科技有限公司 | A kind of large-diameter thin-wall cylinder turning tool |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9039365B2 (en) * | 2012-01-06 | 2015-05-26 | General Electric Company | Rotor, a steam turbine and a method for producing a rotor |
-
2018
- 2018-04-18 CN CN201810350946.9A patent/CN108620926B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102009363A (en) * | 2010-11-29 | 2011-04-13 | 大连名阳实业有限公司 | Thin-wall piece lathe clamp |
| CN202356947U (en) * | 2011-12-09 | 2012-08-01 | 中山火炬职业技术学院 | Special fixture for lathe machining of thin-walled disc type workpieces |
| CN103231074A (en) * | 2013-04-18 | 2013-08-07 | 哈尔滨汽轮机厂有限责任公司 | Machining method of inner circle and outer circle of elastic ring provided with opening and made of high temperature alloy |
| CN204135771U (en) * | 2014-09-04 | 2015-02-04 | 上海中船三井造船柴油机有限公司 | For the anti-deformation built-up jig of turning thin-wall workpiece |
| CN105563152A (en) * | 2014-11-07 | 2016-05-11 | 三峡大学 | Clamp for processing thin-wall bush |
| CN104924137A (en) * | 2015-07-13 | 2015-09-23 | 株洲齿轮有限责任公司 | Clamp assembly for finish machining of thin-wall ring columnar part and machining method |
| CN206484022U (en) * | 2017-02-15 | 2017-09-12 | 安徽科幂机械科技有限公司 | A kind of large-diameter thin-wall cylinder turning tool |
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| CN108620926A (en) | 2018-10-09 |
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Effective date of registration: 20221215 Address after: 150000 building 3, high tech production base, Nangang District, Harbin City, Heilongjiang Province Patentee after: HARBIN TURBINE Co.,Ltd. Patentee after: HADIAN POWER EQUIPMENT NATIONAL ENGINEERING RESEARCH CENTER CO.,LTD. Address before: 150046 No. three power road 345, Xiangfang District, Heilongjiang, Harbin Patentee before: HARBIN TURBINE Co.,Ltd. |
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