CN103394879B - Turbine steam seal processing cart instrument and processing method - Google Patents
Turbine steam seal processing cart instrument and processing method Download PDFInfo
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- CN103394879B CN103394879B CN201310353795.XA CN201310353795A CN103394879B CN 103394879 B CN103394879 B CN 103394879B CN 201310353795 A CN201310353795 A CN 201310353795A CN 103394879 B CN103394879 B CN 103394879B
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Abstract
The invention provides a kind of processing method of industrial steam turbine packing and the turner tool for processing packing.This packing processing method replaces pincers worker to shovel the operation of scraping by grinding, not only increases operating efficiency, and can be processed by two of each lobe secter pat mating surfaces simultaneously, ensure that the perpendicularity of two mating surfaces; Directly hold pintongs secter pat tightly with special clamping ring, datum end face, by flat, both can ensure that the gap of mating surface was not more than 0.03mm, easy to setup again, had saved the standard joint man-hour of every part packing processing; Turner tool of the present invention is improved to eight pre-loading screw, counterface pressing plate, is held out against by secter pat respectively, solve difficulty and look for circumference benchmark from two mating surfaces of every block secter pat to centre, and mating surface cannot accurate problem of fitting.
Description
Technical field
The present invention relates to field of machining, particularly a kind of processing method of industrial steam turbine packing and a kind of turner tool processed.
Background technology
In the industrial production, the usually direct steam turbine plant equipment that drives some large-scale as prime mover, as large fan, equipment that feed pump compressor constant power is larger, the steam turbine of this purposes is industrial steam turbine.Industrial steam turbine both can use fuel, also can utilize the steam that in all types of industries production procedure, by-product heat energy produces in the boiler, also can utilize the remaining vapour in production procedure.Along with industrial expansions such as chemical industry, oil refining, petrochemical industry, metallurgy, light industry and weavings, and economize energy, industrial steam turbine will be more widely used.
Industrial steam turbine is made up of rotating part and stationary part two aspects.Rotor comprises main shaft, impeller, moving vane and shaft coupling etc.Stator comprises admission part, cylinder, dividing plate and static cascade, packing and bearing etc.Gap between rotor and stator can cause leaking vapour, and this not only can reduce the efficiency of unit, also can affect unit safety operation.In order to prevent steam leakage and air from bleeding, needing sealing device, being commonly referred to packing.Packing is topmost hermetic seal part in steam-turbine parts, and material is copper alloy, and structure is annulus inner gland groove, and it is made up of the identical secter pat of pintongs, requires that the mating surface gap of often adjacent secter pat is not more than 0.03mm.Present processing method is after being first processed into ring with the rough turn endoporus of copper rod, cylindrical and end face, Linear cut cuts open into the identical secter pat of pintongs, the mating surface scraping each lobe secter pat is shoveled again by pincers worker, to ensure the laminating degree between two secter pats, finally use turner tool positioning and clamping pintongs secter pat, all sizes of finish turning and packing groove.This processing mode has four problems:
1, due to the shovel amount of scraping of each mating surface uncontrollable when pincers worker shovel is scraped, two mating surface out of plumb of same lobe secter pat are caused;
2, to scrape time of cost longer for pincers worker shovel, and inefficiency, can not meet the requirement of manufacturing schedule;
3, after mating surface is scraped by pincers worker shovel, the center that mating surface is only justified is caused;
4, part is pintongs composition, common turner tool clamping difficulty.
Summary of the invention
In order to solve above-mentioned technical problem of the prior art, the object of this invention is to provide a kind of processing method of industrial steam turbine packing and the turner tool for processing packing.This packing processing method replaces pincers worker to shovel the operation of scraping by grinding, not only increases operating efficiency, and can be processed by two of each lobe secter pat mating surfaces simultaneously, ensure that the perpendicularity of two mating surfaces; Directly hold pintongs secter pat tightly with special clamping ring, datum end face, by flat, both can ensure that the gap of mating surface was not more than 0.03mm, easy to setup again, had saved the standard joint man-hour of every part packing processing; Turner tool of the present invention is improved to eight pre-loading screw, counterface pressing plate, is held out against by secter pat respectively, solve difficulty and look for circumference benchmark from two mating surfaces of every block secter pat to centre, and mating surface cannot accurate problem of fitting.
To achieve these goals, the invention provides a kind of industrial steam turbine packing processing method: comprise the following steps:
Copper rod blank is heat-treated destressing by step 1.;
The end face of the rough turn blank of step 2., cylindrical and endoporus;
Step 3. with car endoporus for the rough turn blank other end of benchmark, cylindrical and endoporus;
Blank is carried out Linear cut by step 4., is divided into pintongs secter pat;
Step 5. takes mating surface and the datum end face of each lobe secter pat of built-up jig pairing reconditioning by flat stone mill;
Step 6. clamping ring holds pintongs secter pat tightly, by datum end face by flat, and finish turning end face, cylindrical and endoporus;
Step 7. is got on the bus instrument, with car endoporus for benchmark finish turning other end, cylindrical and inner gland groove;
Serial number mark is made in step 8. pincers worker deburring, pintongs secter pat is loaded turner tool and compresses;
Step 9. calibration head-clamp turner tool, bores circumferential apertures and end-face hole;
Step 10. comprehensive test.
Preferably, in step 4, after blank is divided into pintongs secter pat, mating surface bias is not more than 0.05mm.
Preferably, in step 5, each secter pat after reconditioning, the gap of mating surface is not more than 0.03mm in its natural state.
Preferably, in step 5, the granularity of emery wheel is selected to be 40-60um.
Present invention also offers a kind of turbine steam seal processing cart instrument, comprise body and pressing plate, pressing plate is connected with body fits by bolt, and described body is provided with pre-loading screw.
Preferably, described pre-loading screw is eight, is held out against by pintongs secter pat respectively from two mating surfaces of every lobe secter pat to centre.
The invention has the beneficial effects as follows:
1, turbine steam seal processing method of the present invention replaces pincers worker to shovel the operation of scraping by grinding, can be processed by two of each lobe secter pat mating surfaces simultaneously, ensure that the perpendicularity of two mating surfaces, decrease the displacement with theoretical center; The grinding wheel graininess that grinding is selected is little, pore large, can hold a large amount of chips of material;
2, replace pincers worker to shovel the operation of scraping by grinding, greatly reduce process time, foreshorten to 4 hours by original 3 working days, improve operating efficiency, meet manufacturing schedule requirement; And the roughness of mating surface reaches Ra1.6, flatness 0.02, meets the instructions for use of packing;
3, during finish turning, directly hold pintongs secter pat tightly with clamping ring, by datum end face by flat, both can ensure that the gap of mating surface was not more than 0.03, easy to setup again, save the standard joint man-hour of every part processing;
4, turner tool is improved to eight pre-loading screw, counterface pressing plate, is held out against by secter pat respectively, solve difficulty and look for circumference benchmark from two mating surfaces of every block secter pat to centre, and mating surface cannot accurate problem of fitting.
Accompanying drawing explanation
Fig. 1 is the structural representation of turner tool of the present invention;
Fig. 2 is the structural representation of car tool body;
Fig. 3 is the B-B direction view of Fig. 2;
Fig. 4 is the structural representation of car tooling caul;
Fig. 5 is the A-A direction view of Fig. 4.
Reference numeral
1. outer plate; 2. secter pat; 3. clip plate; 4. bolt; 5. pre-loading screw; 6. body
Detailed description of the invention
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in further detail.
As shown in Figures 1 to 5, turbine steam seal processing cart instrument of the present invention comprises body 6, outer plate 1 and clip plate 3, and outer plate 1 and clip plate 3 are connected by bolt 4 and body 6 and are fixed by secter pat 2, and described body 6 is provided with pre-loading screw 5.Described pre-loading screw 5 is set to eight, is held out against by pintongs secter pat respectively from two mating surfaces of every lobe secter pat to centre.
Turbine steam seal processing method of the present invention, comprises the following steps:
Copper rod blank is heat-treated destressing by step 1.;
The end face of the rough turn blank of step 2., cylindrical and endoporus;
Step 3. with car endoporus for the rough turn blank other end of benchmark, cylindrical and endoporus;
Blank is carried out Linear cut by step 4., is divided into pintongs secter pat;
Step 5. takes mating surface and the datum end face of each lobe secter pat of built-up jig pairing reconditioning by flat stone mill;
Step 6. clamping ring holds pintongs secter pat tightly, by datum end face by flat, and finish turning end face, cylindrical and endoporus;
Step 7. is got on the bus instrument, with car endoporus for benchmark finish turning other end, cylindrical and inner gland groove;
Serial number mark is made in step 8. pincers worker deburring, pintongs secter pat is loaded turner tool and compresses;
Step 9. calibration head-clamp turner tool, bores circumferential apertures and end-face hole;
Step 10. comprehensive test.
In step 4, after blank is divided into pintongs secter pat, mating surface bias should be not more than 0.05mm.
In step 5, each secter pat after reconditioning, the gap of mating surface is not more than 0.03mm in its natural state.
In step 5, during reconditioning, the granularity of emery wheel is selected to be 40-60um.
What finally illustrate is, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (6)
1. a turbine steam seal processing method, is characterized in that, comprises the following steps:
Copper rod blank is heat-treated destressing by step 1.;
The end face of the rough turn blank of step 2., cylindrical and endoporus;
Step 3. with car endoporus for the rough turn blank other end of benchmark, cylindrical and endoporus;
Blank is carried out Linear cut by step 4., is divided into pintongs secter pat;
Step 5. takes mating surface and the datum end face of each lobe secter pat of built-up jig pairing reconditioning by flat stone mill;
Step 6. clamping ring holds pintongs secter pat tightly, by datum end face by flat, and finish turning end face, cylindrical and endoporus;
Step 7. is got on the bus instrument, with car endoporus for benchmark finish turning other end, cylindrical and inner gland groove;
Serial number mark is made in step 8. pincers worker deburring, pintongs secter pat is loaded turner tool and compresses;
Step 9. calibration head-clamp turner tool, bores circumferential apertures and end-face hole;
Step 10. comprehensive test.
2. turbine steam seal processing method according to claim 1, is characterized in that, in step 4, after blank is divided into pintongs secter pat, mating surface bias is not more than 0.05mm.
3. turbine steam seal processing method according to claim 1, is characterized in that, in step 5, each secter pat after reconditioning, the gap of mating surface is not more than 0.03mm in its natural state.
4. turbine steam seal processing method according to claim 1, is characterized in that, in step 5, selects the granularity of emery wheel to be 40-60um.
5. the turner tool for turbine steam seal processing method according to claim 1, it is characterized in that, comprise body (6), outer plate (1) and clip plate (3), outer plate (1) and clip plate (3) are connected secter pat (2) is fixing by bolt (4) and body (6), described body (6) is provided with pre-loading screw (5).
6. the turner tool of turbine steam seal processing method according to claim 5, is characterized in that, described pre-loading screw (5) is eight, is held out against by pintongs secter pat respectively from two mating surfaces of every lobe secter pat to centre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310353795.XA CN103394879B (en) | 2013-08-14 | 2013-08-14 | Turbine steam seal processing cart instrument and processing method |
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| CN201310353795.XA CN103394879B (en) | 2013-08-14 | 2013-08-14 | Turbine steam seal processing cart instrument and processing method |
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| CN103394879A CN103394879A (en) | 2013-11-20 |
| CN103394879B true CN103394879B (en) | 2015-10-21 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103949858B (en) * | 2014-04-28 | 2016-03-23 | 哈尔滨汽轮机厂有限责任公司 | A kind of power station steam turbine packing segmental arc processing method |
| CN106239195B (en) * | 2016-08-18 | 2019-03-08 | 武汉船用机械有限责任公司 | A kind of supporting tool of casing part |
| CN113695942A (en) * | 2021-08-27 | 2021-11-26 | 沈阳透平机械股份有限公司 | Clamping tool for sealing and processing static blade and using method thereof |
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