CN110977533A - Clamp for processing arc of blade root of moving blade of steam turbine - Google Patents
Clamp for processing arc of blade root of moving blade of steam turbine Download PDFInfo
- Publication number
- CN110977533A CN110977533A CN201911312288.5A CN201911312288A CN110977533A CN 110977533 A CN110977533 A CN 110977533A CN 201911312288 A CN201911312288 A CN 201911312288A CN 110977533 A CN110977533 A CN 110977533A
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- Prior art keywords
- moving blade
- pressing block
- block
- steam turbine
- positioning
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Links
- 238000003754 machining Methods 0.000 claims description 21
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/062—Work-clamping means adapted for holding workpieces having a special form or being made from a special material
- B23Q3/063—Work-clamping means adapted for holding workpieces having a special form or being made from a special material for holding turbine blades
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The invention relates to a fixture for processing a blade root arc of a moving blade of a steam turbine, which comprises a central hole positioning block, a fixture body, an upper pressing block, an upper fastening bolt, a first side pressing block, a first side fastening bolt, a second side pressing block, a second side fastening bolt, a positioning assembly and a fixture clamping body. The anchor clamps body upper end is provided with the mounting groove, and the moving blade setting is in the mounting groove. The clamp position body of the clamp is fixed at the other end of the clamp body. First side compact heap and second side compact heap parallel arrangement are in the mounting groove. The first side face fastening bolt is abutted to the first side face pressing block through one side of the clamp body, and the second side face fastening bolt is abutted to the second side face pressing block through the other side of the clamp body. Go up the compact heap and fix in the specific upper end of anchor clamps, go up fastening bolt and pass through last compact heap and moving blade butt. The fixture for processing the arc of the blade root of the moving blade of the steam turbine can realize the quick and effective fixation of the moving blade of the steam turbine, thereby facilitating the processing of the arc of the blade root of the moving blade.
Description
Technical Field
The invention relates to the technical field of steam turbines, in particular to a fixture for machining arc of blade roots of steam turbine moving blades.
Background
The turbine moving blade is a key part of the turbine and is one of the finest and most important parts. It is subjected to the combined action of high temperature, high pressure, huge centrifugal force, steam exciting force, corrosion and vibration and water drop erosion in a wet steam area under extremely severe conditions. The aerodynamic performance, the processing geometry, the surface roughness, the mounting clearance, the operation condition and the structural factors all influence the efficiency of the steam turbine; the structural design, the vibration strength and the operation mode of the vibration damping device have decisive influence on the safety and reliability of the unit. In order to better meet the assembly requirements of the turbine moving blade, a blade root arc is processed in each block when the blade root of the moving blade is processed. Taking the T-shaped blade root as an example, the height difference between the two is within 0.02 mm. The currently used fixture for machining the arc of the blade root of the moving blade of the steam turbine has poor fixing effect and inconvenient operation, so that the machining efficiency of the arc of the blade root of the moving blade of the steam turbine is low.
Disclosure of Invention
The invention provides a fixture for machining arc of blade root of moving blade of steam turbine, aiming at the technical problem that arc of blade root of moving blade is difficult to be machined by quickly and effectively fixing the moving blade of steam turbine in the prior art.
The technical scheme for solving the technical problems is as follows:
a steam turbine moving blade root circular arc adds clamping apparatus includes: centre bore locating piece, the anchor clamps body, go up the compact heap, go up fastening bolt, first side compact heap, first side fastening bolt, second side compact heap, second side fastening bolt, locating component and anchor clamps clamp body.
The upper end of the fixture body is provided with a mounting groove, and the moving blade is arranged in the mounting groove; the center hole positioning block is fixed at one end of the clamp body and is provided with a positioning hole; the clamp clamping body is fixed at the other end of the clamp body and matched with the machine tool.
The first side face pressing block and the second side face pressing block are arranged in the mounting groove in parallel and are respectively positioned on two sides of the moving blade; the first side face fastening bolt is abutted to the first side face pressing block through one side of the clamp body, and the second side face fastening bolt is abutted to the second side face pressing block through the other side of the clamp body. Go up the compact heap and fix in the specific upper end of anchor clamps, go up fastening bolt and pass through last compact heap and moving blade butt.
The positioning component is fixed at one end of the inner side of the mounting groove and is abutted against the moving blade; specifically, the locating component includes: positioning nuts and positioning bolts; one end of the positioning bolt penetrates through the positioning nut and is fixed with one end of the inner side of the mounting groove in a threaded manner, and the other end of the positioning bolt is abutted to the moving blade.
In the preferred scheme, the method further comprises the following steps: a wear-resistant block;
the wear-resistant block is fixed at the bottom of the inner side of the mounting groove, and the moving blade is arranged above the wear-resistant block.
In a preferred scheme, the clamp body is a rectangular block, and the mounting groove is rectangular.
In a preferable scheme, at least one upper pressing block is provided.
In a preferred scheme, the first side surface pressing block and the second side surface pressing block are of square structures.
In a preferred embodiment, the number of the first side surface fastening bolts and the number of the second side surface fastening bolts are three.
In the preferred scheme, the bottom of the upper compression block is provided with a groove.
In the preferred scheme, the method further comprises the following steps: a copper sheet;
the copper sheet is arranged between the lower end of the upper fastening bolt and the upper end of the turbine moving blade.
The fixture for processing the arc of the blade root of the moving blade of the steam turbine provided by the invention at least has the following beneficial effects or advantages:
the invention provides a fixture for processing arc of blade root of a moving blade of a steam turbine. The clamp clamping body is fixed at one end of the clamp body, and the machine tool fixes the clamp clamping body. The center hole positioning block is fixed at one end of the clamp body, a positioning hole is formed in the center hole positioning block, and the machine tool is positioned through the positioning hole. The positioning assembly is fixed at one end of the inner side of the mounting groove and is abutted against the moving blade, the moving blade is positioned through the positioning assembly, the first side face pressing block and the second side face pressing block are respectively positioned at two sides of the moving blade, and the first side face pressing block and the second side face pressing block are pushed to clamp the left side and the right side of the moving blade by adjusting the first side face fastening bolt and the second side face fastening bolt; fixing the upper end and the lower end of the moving blade by fastening bolts; the turbine moving blade can be quickly and effectively fixed, so that the blade root arc processing of the moving blade is convenient.
Drawings
FIG. 1 is a schematic structural view of a fixture for machining a blade root arc of a moving blade of a steam turbine according to an embodiment of the present invention;
FIG. 2 is a top view of a fixture for machining a circular arc of a blade root of a moving blade of a steam turbine according to an embodiment of the present invention;
FIG. 3 is a schematic bottom structure view of a fixture for machining arc-shaped blade roots of moving blades of a steam turbine according to an embodiment of the present invention;
fig. 4 is a left side view of the arc machining fixture for the blade root of the steam turbine moving blade according to the embodiment of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1-a central hole positioning block, 2-a fixture body, 3-a moving blade, 4-an upper fastening bolt, 5-an upper pressing block, 6-a first bolt, 7-a first nut, 8-a first side pressing block, 9-a first side fastening bolt, 10-a fixture clamping body, 11-a second bolt, 12-a second side pressing block, 13-a second side fastening bolt, 14-a positioning nut, 15-a positioning bolt, 16-a copper sheet, 17-a wear-resistant block, 18-a third bolt and 19-a fourth bolt.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention provides a fixture for processing a blade root arc of a moving blade of a steam turbine, which is shown in the figures 1-4 and comprises the following components: the clamp comprises a center hole positioning block 1, a clamp body 2, an upper pressing block 5, an upper fastening bolt 4, a first side pressing block 8, a first side fastening bolt 9, a second side pressing block 12, a second side fastening bolt 13, a positioning assembly and a clamp clamping body 10.
The upper end of the clamp body 2 is provided with a mounting groove, and the moving blade 3 is arranged in the mounting groove. The center hole positioning block 1 is fixed at one end of the clamp body 2 through a fourth bolt 19, and a positioning hole is formed in the upper end of the center hole positioning block 1 and used for being matched with a positioning piece on a machine tool. In this embodiment, the fixture body 2 is a rectangular block, and the mounting groove is rectangular.
The clamp clamping body 10 is fixed at the other end of the clamp body 2 through a second bolt 11, and the clamp clamping body 10 is matched and fixed with a machine tool. The first side face pressing block 8 and the second side face pressing block 12 are arranged in the mounting groove in parallel, and the first side face pressing block 8 and the second side face pressing block 12 are respectively positioned at the left side and the right side of the moving blade 3; the first side surface fastening bolt 9 is abutted with the first side surface pressing block 8 through one side of the clamp body 2, and the second side surface fastening bolt 13 is abutted with the second side surface pressing block 12 through the other side of the clamp body 2; the first side fastening bolt 9 and the second side fastening bolt 13 are used for pushing the first side pressing block 8 and the second side pressing block 12 to move in opposite directions, so as to clamp the left side and the right side of the moving blade 3. In this embodiment, the first side surface pressing block 8 and the second side surface pressing block 12 are in a square block structure. Three first side fastening bolts 9 and three second side fastening bolts 13 are provided.
The upper pressing block 5 is fixed at the upper end of the fixture body 2 through a first bolt 6 and a first nut 7 in a matching way, and the upper fastening bolt 4 is abutted against the moving blade 3 through the upper pressing block 5; the upper fastening bolt 4 is used to press the moving blade 3 against the bottom of the mounting groove to achieve fixation. The bottom of the upper pressing block 5 is provided with a groove to prevent the upper pressing block 5 from directly contacting with the moving blade 3. Go up compact heap 5 and be one at least, its quantity can set up as required in a flexible way, to the moving blade 3 of length increase, the accessible increases the quantity of compact heap 5 and guarantees the effect that compresses tightly of work piece to improve the application scope of anchor clamps. In this embodiment, two upper pressing blocks 5 are arranged in parallel.
The positioning component is fixed at one end of the inner side of the mounting groove and is abutted against the moving blade 3; specifically, the locating component includes: a positioning nut 14 and a positioning bolt 15; one end of the positioning bolt 15 penetrates through the positioning nut 14 and is fixedly connected with one end of the inner side of the mounting groove in a threaded manner, and the positioning nut 14 is used for adjusting the length of the positioning bolt 15 exposed out of the inner side of the mounting groove; the other end of the positioning bolt 15 abuts against the rotor blade 3, and the rotor blade 3 is positioned by the positioning bolt 15.
In a preferred embodiment of the present invention, referring to fig. 1 to 3, the fixture for machining the arc of the blade root of the moving blade of the steam turbine further includes: a wear block 17. The wear-resisting block 17 is fixed at the bottom of the inner side of the mounting groove through a third bolt 18, and the moving blade 3 is arranged above the wear-resisting block 17. The abrasion-resistant block 17 can effectively avoid the reduction of the precision caused by abrasion of the clamp due to repeated clamping of the blades.
In a preferred embodiment of the present invention, referring to fig. 1 to 3, the fixture for machining the arc of the blade root of the moving blade of the steam turbine further includes: a copper sheet 16. The copper pieces 16 are provided between the lower end of the upper fastening bolt 4 and the upper end of the turbine moving blade 3, and the copper pieces 16 are used to prevent the upper fastening bolt 4 from directly contacting the moving blade 3 and damaging the moving blade 3.
Referring to fig. 1 to 4, the working process of the fixture for machining the arc of the blade root of the moving blade of the steam turbine provided by the embodiment of the invention is as follows: firstly, the bolt on the upper pressing block 5 is loosened, and the upper pressing block 5 is detached from the clamp body 2. The first side face fastening bolt 9 and the second side face fastening bolt 13 are rotated reversely, so that the first side face pressing block 8 and the second side face pressing block 12 move reversely, and a gap capable of placing the moving blade 3 is reserved between the first side face pressing block 8 and the second side face pressing block 12. The moving blade 3 is placed between the first side pressing block 8 and the second side pressing block 12 in the mounting groove, the moving blade 3 is located above the wear-resistant block 17, and the moving blade 3 is located through the locating bolt 15. After positioning is completed, the upper pressing block 5 is assembled on the clamp body 2 and the connected bolts are screwed down. The upper fastening bolt 4 is rotated forward to press the moving blade 3 against the upper end of the wear-resistant block to fix the moving blade 3 in the vertical direction. The first side fastening bolt 9 and the second side fastening bolt 13 are rotated in the forward direction to move the first side presser 8 and the second side presser 12 in the opposite direction, thereby fixing the left and right sides of the rotor blade 3. Thereby facilitating the arc machining of the blade root of the moving blade 3.
The fixture for processing the arc of the blade root of the moving blade of the steam turbine provided by the embodiment of the invention at least has the following beneficial effects or advantages:
according to the arc machining clamp for the blade root of the moving blade of the steam turbine provided by the embodiment of the invention, the upper end of the clamp body is provided with the installation groove, and the moving blade is arranged in the installation groove. The clamp clamping body is fixed at one end of the clamp body, and the machine tool fixes the clamp clamping body. The center hole positioning block is fixed at one end of the clamp body, a positioning hole is formed in the center hole positioning block, and the machine tool is positioned through the positioning hole. The positioning assembly is fixed at one end of the inner side of the mounting groove and is abutted against the moving blade, the moving blade is positioned through the positioning assembly, the first side face pressing block and the second side face pressing block are respectively positioned at two sides of the moving blade, and the first side face pressing block and the second side face pressing block are pushed to clamp the left side and the right side of the moving blade by adjusting the first side face fastening bolt and the second side face fastening bolt; fixing the upper end and the lower end of the moving blade by fastening bolts; the turbine moving blade can be quickly and effectively fixed, so that the blade root arc processing of the moving blade is convenient.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. The utility model provides a steam turbine moving blade root circular arc adds clamping apparatus which characterized in that includes: the clamp comprises a center hole positioning block (1), a clamp body (2), an upper pressing block (5), an upper fastening bolt (4), a first side pressing block (8), a first side fastening bolt (9), a second side pressing block (12), a second side fastening bolt (13), a positioning assembly and a clamp clamping body (10);
the upper end of the clamp body (2) is provided with a mounting groove, and the moving blade (3) is arranged in the mounting groove; the center hole positioning block (1) is fixed at one end of the clamp body (2), and a positioning hole is formed in the center hole positioning block (1); the clamp clamping body (10) is fixed at the other end of the clamp body (2), and the clamp clamping body (10) is matched with a machine tool; the first side face pressing block (8) and the second side face pressing block (12) are arranged in the mounting groove in parallel, and the first side face pressing block (8) and the second side face pressing block (12) are respectively located on two sides of the moving blade (3); the first side surface fastening bolt (9) is abutted with the first side surface pressing block (8) through one side of the clamp body (2), and the second side surface fastening bolt (13) is abutted with the second side surface pressing block (12) through the other side of the clamp body (2); the upper pressing block (5) is fixed at the upper end of the clamp body (2), and the upper fastening bolt (4) is abutted against the moving blade (3) through the upper pressing block (5); the positioning component is fixed at one end of the inner side of the mounting groove and is abutted against the moving blade (3).
2. The fixture for machining the arc of the blade root of a moving blade of a steam turbine according to claim 1, wherein the positioning assembly comprises: a positioning nut (14) and a positioning bolt (15);
one end of the positioning bolt (15) penetrates through the positioning nut (14) and is fixedly screwed with one end of the inner side of the mounting groove, and the other end of the positioning bolt (15) is abutted against the moving blade (3).
3. The fixture for machining the arc of the blade root of a moving blade of a steam turbine according to claim 1, further comprising: a wear-resistant block (17);
the wear-resistant block (17) is fixed at the bottom of the inner side of the mounting groove, and the moving blade (3) is arranged above the wear-resistant block (17).
4. The circular arc machining fixture for the blade root of the moving blade of the steam turbine according to any one of claims 1 to 3, wherein the fixture body (2) is a rectangular block, and the mounting groove is rectangular.
5. The circular arc machining fixture for the blade root of a moving blade of a steam turbine according to any one of claims 1 to 3, characterized in that at least one upper compression block (5) is provided.
6. The circular arc machining fixture for the blade root of the steam turbine moving blade according to any one of claims 1 to 3, wherein the first side pressing block (8) and the second side pressing block (12) are of a square block structure.
7. The steam turbine moving blade root arc machining jig as claimed in any one of claims 1 to 3, wherein there are three first side surface fastening bolts (9) and three second side surface fastening bolts (13), respectively.
8. The circular arc machining fixture for the blade root of the moving blade of the steam turbine as claimed in any one of claims 1 to 3, wherein the bottom of the upper compression block (5) is provided with a groove.
9. The fixture for machining the arc of the blade root of a moving blade of a steam turbine according to claim 1, further comprising: a copper sheet (16);
the copper sheets (16) are arranged between the lower ends of the fastening bolts (4) and the upper ends of the turbine moving blades (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911312288.5A CN110977533B (en) | 2019-12-18 | 2019-12-18 | Turbine moving blade root circular arc adds clamping apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911312288.5A CN110977533B (en) | 2019-12-18 | 2019-12-18 | Turbine moving blade root circular arc adds clamping apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110977533A true CN110977533A (en) | 2020-04-10 |
| CN110977533B CN110977533B (en) | 2024-07-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911312288.5A Active CN110977533B (en) | 2019-12-18 | 2019-12-18 | Turbine moving blade root circular arc adds clamping apparatus |
Country Status (1)
| Country | Link |
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| CN (1) | CN110977533B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112683142A (en) * | 2020-11-30 | 2021-04-20 | 山东齐鲁电机制造有限公司 | Tool and method for detecting symmetry degree of conical surface and double key grooves at steam end of steam turbine generator |
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| CN104476229A (en) * | 2014-11-19 | 2015-04-01 | 杭州汽轮机股份有限公司 | Processing clamp for inner back-arc molded surface and boss of moving blade of steam turbine |
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| CN107838719A (en) * | 2017-12-04 | 2018-03-27 | 无锡透平叶片有限公司 | Fixture for compressor blade dove-tail form blade root machining |
| CN110238675A (en) * | 2019-07-01 | 2019-09-17 | 哈尔滨汽轮机厂有限责任公司 | A kind of clamping device and the turbine Blade Machining method based on the device |
| CN211490526U (en) * | 2019-12-18 | 2020-09-15 | 中国长江动力集团有限公司 | Clamp for processing arc of blade root of moving blade of steam turbine |
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2019
- 2019-12-18 CN CN201911312288.5A patent/CN110977533B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103737353A (en) * | 2013-12-19 | 2014-04-23 | 东方电气集团东方汽轮机有限公司 | Steam turbine blade positioning and clamping system used for machining steam passage |
| CN103921146A (en) * | 2014-04-04 | 2014-07-16 | 西北工业大学 | Fixture for processing of precisely-forged blade tenon root |
| CN204221439U (en) * | 2014-11-05 | 2015-03-25 | 南京赛达机械制造有限公司 | Length adjustable turbine Blade Machining fixture |
| CN104476229A (en) * | 2014-11-19 | 2015-04-01 | 杭州汽轮机股份有限公司 | Processing clamp for inner back-arc molded surface and boss of moving blade of steam turbine |
| CN204235204U (en) * | 2014-11-19 | 2015-04-01 | 杭州汽轮机股份有限公司 | Milling Control Stage of Steam Turbine moving vane fir-tree root universal fixturing |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112683142A (en) * | 2020-11-30 | 2021-04-20 | 山东齐鲁电机制造有限公司 | Tool and method for detecting symmetry degree of conical surface and double key grooves at steam end of steam turbine generator |
| CN112683142B (en) * | 2020-11-30 | 2022-07-01 | 山东齐鲁电机制造有限公司 | Tool and method for detecting symmetry degree of conical surface and double key grooves at steam end of steam turbine generator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110977533B (en) | 2024-07-16 |
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