CN102941370A - Method for processing steam balance holes on rotor impellers of steam turbine - Google Patents
Method for processing steam balance holes on rotor impellers of steam turbine Download PDFInfo
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- CN102941370A CN102941370A CN2012104646019A CN201210464601A CN102941370A CN 102941370 A CN102941370 A CN 102941370A CN 2012104646019 A CN2012104646019 A CN 2012104646019A CN 201210464601 A CN201210464601 A CN 201210464601A CN 102941370 A CN102941370 A CN 102941370A
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Abstract
The invention relates to a method for processing steam balance holes on rotor impellers of a steam turbine, belonging to the technical field of processing of the rotor impellers of the steam turbine and solving the problems that when a folding drill is adopted for processing the steam balance holes on the rotor impellers of the steam turbine, since the stroke of the folding drill is limited, the processing of all the steam balance holes can not be finished by using one drilling rod. The method comprises the following steps of: firstly using a drilling bit to align to the position of the steam balance holes to be processed of the first rotor impeller to be processed; installing a drilling mold of the steam balance holes; starting to process the steam balance holes of the rotor impellers till the processing of the steam balance holes of all the rotor impellers to be processed in the stroke of the drilling bit is finished; installing a connecting rod between the drilling bit and a tail handle; continuously finishing the processing of the steam balance holes of the other rotor impellers to be processed; exiting the folding drill, and enabling the drilling bit to align to the steam balance holes of next rotor impeller to be processed till the processing of all the steam balance holes of the rotor impeller to be processed is finished. The method is applicable to processing of the steam balance holes on the rotor impellers of the steam turbine.
Description
Technical field
The present invention relates to a kind of impeller of steam turbine rotor balance of steam hole forming method, belong to the impeller of steam turbine rotor processing technique field.
Background technology
Turbine rotor is the core component of steam turbine, requires to have very high machining accuracy.In the turbine rotor process technology, be the thrust of balance impeller end face, usually have the balance of steam hole on the impeller, the conventional machining method in balance of steam hole is to process at boring machine; But rotor end-face can't be finished processing at boring machine with flange, therefore processes with Deflection drill, because the stroke of Deflection drill is limited, so that can't use a drilling rod to finish the processing in balance of steam hole.
Summary of the invention
The present invention is in order to solve when adopting Deflection drill processing impeller of steam turbine rotor balance of steam hole, because the stroke of Deflection drill is limited, can't use a drilling rod to finish the problem of the processing in all balance of steam holes, a kind of impeller of steam turbine rotor balance of steam hole forming method is provided.
Impeller of steam turbine rotor balance of steam hole forming method of the present invention, it may further comprise the steps:
Step 1: the drill bit of Deflection drill is installed on the caudal peduncle of Deflection drill, again caudal peduncle is installed on the base of Deflection drill, determine the initial relative position of Deflection drill and impeller of rotor to be processed, make the place, balance of steam to be processed hole of the first impeller of rotor to be processed of drill bit;
Step 2: the place, balance of steam to be processed hole that the balance of steam drilling jig is installed in first impeller of rotor to be processed;
Step 3: the control drill bit is according to the guiding of balance of steam drilling jig, and the balance of steam hole of beginning processing rotor impeller is until finish the processing in the balance of steam hole of all impeller of rotor to be processed that bit run can reach;
Step 4: drill bit is withdrawed from the impeller of rotor of having processed, then between drill bit and caudal peduncle, connecting rod is installed;
Step 5: control again the balance of steam hole that drill bit passes the impeller of rotor that has machined, continue to finish the processing in the balance of steam hole of all the other impeller of rotor to be processed, all are in the processing in the balance of steam hole on the same straight line on the impeller of rotor to be processed until finish;
Step 6: withdraw from Deflection drill, make the place, balance of steam to be processed hole of the next impeller of rotor to be processed of drill bit, until finish the processing in all balance of steam holes of impeller of rotor to be processed.
The mode in the balance of steam hole of described drill bit processing rotor impeller is for boring, expand or hinge.
Advantage of the present invention is: the inventive method makes the haul distance of Deflection drill reach the processing length in the balance of steam to be processed hole of impeller of rotor by increasing connecting rod, it processes first the balance of steam hole in the Deflection drill normal travel scope, then adopts the mode that increases connecting rod to process other balance pipes.Solved and used conventional processing method to can not be completed the difficult problem of processing, for product processing provides new thinking, improved the product working ability.
Description of drawings
Fig. 1 is for adopting processing method of the present invention to process in the process in impeller of steam turbine rotor balance of steam hole the machining state schematic diagram.
The specific embodiment
The specific embodiment one: below in conjunction with Fig. 1 present embodiment is described, the described impeller of steam turbine rotor balance of steam of present embodiment hole forming method, it may further comprise the steps:
Step 1: the drill bit 1 of Deflection drill is installed on the caudal peduncle 2 of Deflection drill, again caudal peduncle 2 is installed on the base 3 of Deflection drill, determine the initial relative position of Deflection drill and impeller of rotor to be processed, make drill bit 1 aim at the place, balance of steam to be processed hole of first impeller of rotor to be processed;
Step 2: the place, balance of steam to be processed hole that the balance of steam drilling jig is installed in first impeller of rotor to be processed;
Step 3: control drill bit 1 is according to the guiding of balance of steam drilling jig, and the balance of steam hole of beginning processing rotor impeller is until finish the processing in the balance of steam hole of all impeller of rotor to be processed that drill bit 1 stroke can reach;
Step 4: drill bit 1 is withdrawed from the impeller of rotor of having processed, then connecting rod 4 is installed between drill bit 1 and caudal peduncle 2;
Step 5: control again the balance of steam hole that drill bit 1 passes the impeller of rotor that has machined, continue to finish the processing in the balance of steam hole of all the other impeller of rotor to be processed, all are in the processing in the balance of steam hole on the same straight line on the impeller of rotor to be processed until finish;
Step 6: withdraw from Deflection drill, make drill bit 1 aim at the place, balance of steam to be processed hole of next impeller of rotor to be processed, until finish the processing in all balance of steam holes of impeller of rotor to be processed.
Present embodiment is at first wanted mounting cutter in force, be with the cylindrical centering of Deflection drill at impeller of rotor.When not using connecting rod 4, drill bit 1 has been finished the processing in previous stage balance of steam hole, and this moment, drill bit 1 was processed rank less than the back, with Deflection drill to withdrawing from drill boom away from impeller one side.Then drill bit 1 is taken off from caudal peduncle 2, install connecting rod 4, continue again processing, until the machining of the level balance of steam hole of all ranks on same straight line.Repeat again above-mentioned steps, finish the processing of next balance of steam hole site.Until all machine.Concrete machined parameters is determined according to the equipment actual conditions.
Processing method in the present embodiment is distinguished the use that mainly is connecting rod 4 with conventional processing method, and connecting rod 4 can repeat to connect, and increases its length, to finish the processing in balance of steam hole.
Operation principle:
Because it is many that impeller of steam turbine rotor need to be processed the rank of balance pipe, processing balance pipe part total length represents with A in Fig. 1, and the stroke of Deflection drill represents with B, if A less than B, this moment, Deflection drill can be finished the processing in hole by motion once; If A is greater than B, can't finish the processing of all grades other balance pipe on same straight line by once moving of Deflection drill this moment, need to arrive by the mode that increases connecting rod the stroke that increases drill bit, finally finishes the purpose of the processing in balance of steam hole.It is fixed that the Design of length of caudal peduncle 2, connecting rod 4 and drill bit 1 is that the needs according to reality processing come.
The specific embodiment two: present embodiment is for to the further specifying of embodiment one, and the mode in the balance of steam hole of described drill bit 1 processing rotor impeller is for boring, expand or hinge.
Claims (2)
1. impeller of steam turbine rotor balance of steam hole forming method, it is characterized in that: it may further comprise the steps:
Step 1: the drill bit (1) of Deflection drill is installed on the caudal peduncle (2) of Deflection drill, again caudal peduncle (2) is installed on the base (3) of Deflection drill, determine the initial relative position of Deflection drill and impeller of rotor to be processed, make drill bit (1) aim at the place, balance of steam to be processed hole of first impeller of rotor to be processed;
Step 2: the place, balance of steam to be processed hole that the balance of steam drilling jig is installed in first impeller of rotor to be processed;
Step 3: control drill bit (1) is according to the guiding of balance of steam drilling jig, and the balance of steam hole of beginning processing rotor impeller is until finish the processing in the balance of steam hole of all impeller of rotor to be processed that drill bit (1) stroke can reach;
Step 4: drill bit (1) is withdrawed from the impeller of rotor of having processed, then between drill bit (1) and caudal peduncle (2), connecting rod (4) is installed;
Step 5: control again the balance of steam hole that drill bit (1) passes the impeller of rotor that has machined, continue to finish the processing in the balance of steam hole of all the other impeller of rotor to be processed, all are in the processing in the balance of steam hole on the same straight line on the impeller of rotor to be processed until finish;
Step 6: withdraw from Deflection drill, make drill bit (1) aim at the place, balance of steam to be processed hole of next impeller of rotor to be processed, until finish the processing in all balance of steam holes of impeller of rotor to be processed.
2. impeller of steam turbine rotor balance of steam hole forming method according to claim 1 is characterized in that: the mode in the balance of steam hole of described drill bit (1) processing rotor impeller is for boring, expand or hinge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104646019A CN102941370A (en) | 2012-11-16 | 2012-11-16 | Method for processing steam balance holes on rotor impellers of steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104646019A CN102941370A (en) | 2012-11-16 | 2012-11-16 | Method for processing steam balance holes on rotor impellers of steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102941370A true CN102941370A (en) | 2013-02-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104646019A Pending CN102941370A (en) | 2012-11-16 | 2012-11-16 | Method for processing steam balance holes on rotor impellers of steam turbine |
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| CN (1) | CN102941370A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105499629A (en) * | 2016-01-20 | 2016-04-20 | 江苏金通灵流体机械科技股份有限公司 | Turbine rotor disk balance hole machining method and machining tool |
| CN112974894A (en) * | 2021-01-26 | 2021-06-18 | 东方电气集团东方汽轮机有限公司 | Method for positioning and processing newly-added hole of steam turbine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE9301632L (en) * | 1993-05-12 | 1994-11-13 | Etp Transmission Ab | Tool extensions for machine tools |
| CN1268417A (en) * | 1999-03-24 | 2000-10-04 | 叶小宁 | Processing method of superlong precision deep bore and its equipment |
| CN2579579Y (en) * | 2002-11-28 | 2003-10-15 | 东方汽轮机厂 | Deflection drill |
| DE20319835U1 (en) * | 2003-09-01 | 2004-04-08 | Sturm, Henry | Drill system extension for drilling longer length holes comprises drills with internal and external threads and extension elements |
| CN102513569A (en) * | 2011-10-18 | 2012-06-27 | 东方电气(广州)重型机器有限公司 | Deep hole processing method and device thereof |
-
2012
- 2012-11-16 CN CN2012104646019A patent/CN102941370A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE9301632L (en) * | 1993-05-12 | 1994-11-13 | Etp Transmission Ab | Tool extensions for machine tools |
| CN1268417A (en) * | 1999-03-24 | 2000-10-04 | 叶小宁 | Processing method of superlong precision deep bore and its equipment |
| CN2579579Y (en) * | 2002-11-28 | 2003-10-15 | 东方汽轮机厂 | Deflection drill |
| DE20319835U1 (en) * | 2003-09-01 | 2004-04-08 | Sturm, Henry | Drill system extension for drilling longer length holes comprises drills with internal and external threads and extension elements |
| CN102513569A (en) * | 2011-10-18 | 2012-06-27 | 东方电气(广州)重型机器有限公司 | Deep hole processing method and device thereof |
Non-Patent Citations (2)
| Title |
|---|
| 张文华等: "《加工汽轮机转子末叶销孔用折向钻的研制》", 《汽轮机技术》, vol. 45, no. 3, 30 June 2003 (2003-06-30) * |
| 詹春辉等: "《用于叶轮销孔的折向钻设计》", 《机械工程师》, no. 6, 30 June 2011 (2011-06-30) * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105499629A (en) * | 2016-01-20 | 2016-04-20 | 江苏金通灵流体机械科技股份有限公司 | Turbine rotor disk balance hole machining method and machining tool |
| CN112974894A (en) * | 2021-01-26 | 2021-06-18 | 东方电气集团东方汽轮机有限公司 | Method for positioning and processing newly-added hole of steam turbine |
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Application publication date: 20130227 |