CN104028946B - A kind of hydraulic upsetting assembly method of turbine blade holding pin - Google Patents
A kind of hydraulic upsetting assembly method of turbine blade holding pin Download PDFInfo
- Publication number
- CN104028946B CN104028946B CN201410218289.4A CN201410218289A CN104028946B CN 104028946 B CN104028946 B CN 104028946B CN 201410218289 A CN201410218289 A CN 201410218289A CN 104028946 B CN104028946 B CN 104028946B
- Authority
- CN
- China
- Prior art keywords
- pin
- straight pin
- impeller
- hydraulic
- turbine blade
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000003754 machining Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 230000008014 freezing Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000009721 upset forging Methods 0.000 description 1
Classifications
-
- 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
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
- B23P19/027—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same using hydraulic or pneumatic means
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The present invention relates to the mounting technology field in machinery manufacturing industry, especially a kind of technique is simple, assembly cost is low, the hydraulic upsetting assembly method of the turbine blade holding pin being connected firmly, the method comprises the following steps: (1) is according to design requirement, impeller and blade root are accomplished fluently pin-and-hole, and processes straight pin；(2) straight pin is loaded by matched in clearance in the pin-and-hole of impeller and blade root；(3) being fixed on by impeller on a platform, hydraulic press tup is close to straight pin end face；(4) according to the size of straight pin, selecting suitable oil pressure value, hydraulic press tup extrudes straight pin with speed slowly, and straight pin gradually produces plastic deformation, makes blade root and impeller reach elastic conjunction.The hydraulic upsetting assembly method of this turbine blade holding pin, the pin bite problem occurred during solving prior art assembling and the straight pin part interference caused because of pin-and-hole machining tolerance disunity, the non-interference problem of part, reduce assembly cost.
Description
Technical field
The present invention relates to the mounting technology field in machinery manufacturing industry, the hydraulic upsetting assembly method of a kind of turbine blade holding pin.
Background technology
Steam turbine forked type is turned round leaf and is typically used straight pin elastic conjunction to be fastened on impeller by blade.In the assembly process of blade and impeller, generally use straight pin liquid nitrogen freezing assembly technology, pin be placed in liquid nitrogen freezing contraction, the most again it quickly loaded in pin-and-hole of blade root and wheel rim, treat that temperature recovers room temperature, blade root with regard to elastic conjunction on impeller.The magnitude of interference needed for this technique is disadvantageous in that because of assembling is the least, and pin-and-hole and pin are by machining tolerance it is difficult to ensure that matching requirements, and pin needs by joining mould production, relatively costly；For generous impeller, when machining pin-and-hole, cutter head can rock, it is difficult to ensure that the uniformity of pin-and-hole machining tolerance, deviation is relatively big, occurs straight pin part interference, the non-interference problem of part after assembling through often；During assembling, if assembling speed is slightly slow, pin loads pin-and-hole the most in time, waits pin to recover room temperature, and pin will be stuck in pin-and-hole.
Summary of the invention
The invention aims to solve the deficiency of above-mentioned technology and provide a kind of technique simple, assembly cost is low, the hydraulic upsetting assembly method of the turbine blade holding pin being connected firmly.
In order to achieve the above object, the hydraulic upsetting assembly method of the turbine blade holding pin designed by the present invention, the method comprises the following steps:
(1) according to design requirement, impeller and blade root are accomplished fluently pin-and-hole, and processes straight pin；
(2) straight pin is loaded by matched in clearance in the pin-and-hole of impeller and blade root, and it is equal to guarantee that straight pin two ends exceed the length of paddle wheel plane；
(3) being fixed on by impeller on a platform, hydraulic press tup is close to straight pin end face；
(4) according to the size of straight pin, selecting suitable oil pressure value, hydraulic press tup extrudes straight pin with speed slowly, and straight pin gradually produces plastic deformation, makes blade root and impeller reach elastic conjunction.
As optimization, the length 8-15mm longer than the thickness of impeller of described straight pin.
As preferably, the length 10mm longer than the thickness of impeller of described straight pin.
The hydraulic upsetting assembly method of the turbine blade holding pin obtained by the present invention, the pin bite problem occurred during solving prior art assembling and the straight pin part interference caused because of pin-and-hole machining tolerance disunity, the non-interference problem of part, use this technique can also relax the machining accuracy of pin-and-hole and pin, pin is no longer necessary to join mould and produces, and reduces assembly cost.Pin after jumping-up, through mechanical properties test, it shears gas mechanical property is not affected by upset forging process.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Detailed description of the invention
The invention will be further described to combine accompanying drawing below by embodiment.
Embodiment 1.
As it is shown in figure 1, the hydraulic upsetting assembly method of the turbine blade holding pin of the present embodiment description, the method comprises the following steps:
(1) according to design requirement, impeller and blade root 1 are accomplished fluently pin-and-hole, and processes straight pin 2；
(2) straight pin 2 is loaded by matched in clearance in the pin-and-hole of impeller and blade root 1, and it is equal to guarantee that straight pin 2 two ends exceed the length of paddle wheel plane；
(3) being fixed on by impeller on a platform, hydraulic press tup 3 is close to straight pin 2 end face；
(4) according to the size of straight pin 2, selecting suitable oil pressure value P, hydraulic press tup 3 extrudes straight pin 2 with speed slowly, and straight pin 2 gradually produces plastic deformation, makes impeller and blade root 1 reach elastic conjunction.
The length 10mm longer than the thickness of impeller of wherein said straight pin 2.
Claims (3)
1. the hydraulic upsetting assembly method of a turbine blade holding pin, it is characterised in that the method comprises the following steps:
(1) according to design requirement, impeller and blade root are accomplished fluently pin-and-hole, and processes straight pin；
(2) straight pin is loaded by matched in clearance in the pin-and-hole of impeller and blade root, and it is equal to guarantee that straight pin two ends exceed the length of paddle wheel plane；
(3) being fixed on by impeller on a platform, hydraulic press tup is close to straight pin end face；
(4) according to the size of straight pin, selecting suitable oil pressure value, hydraulic press tup extrudes straight pin with speed slowly, and straight pin gradually produces plastic deformation, makes blade root and impeller reach elastic conjunction.
The hydraulic upsetting assembly method of a kind of turbine blade holding pin the most according to claim 1, it is characterised in that the length 8-15mm longer than the thickness of impeller of described straight pin.
The hydraulic upsetting assembly method of a kind of turbine blade holding pin the most according to claim 2, it is characterised in that the length 10mm longer than the thickness of impeller of described straight pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410218289.4A CN104028946B (en) | 2014-05-22 | 2014-05-22 | A kind of hydraulic upsetting assembly method of turbine blade holding pin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410218289.4A CN104028946B (en) | 2014-05-22 | 2014-05-22 | A kind of hydraulic upsetting assembly method of turbine blade holding pin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104028946A CN104028946A (en) | 2014-09-10 |
| CN104028946B true CN104028946B (en) | 2016-08-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410218289.4A Active CN104028946B (en) | 2014-05-22 | 2014-05-22 | A kind of hydraulic upsetting assembly method of turbine blade holding pin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104028946B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112378305B (en) * | 2020-11-02 | 2022-05-24 | 杭州汽轮机股份有限公司 | Cylindrical pin assembling method based on interference magnitude control |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201760740U (en) * | 2010-08-30 | 2011-03-16 | 天津达祥精密工业有限公司 | Pin pressing machine provided with pressure detecting device |
| CN202301355U (en) * | 2011-11-03 | 2012-07-04 | 苏州东风精冲工程有限公司 | Double-end pressing riveting pin and rivet pressing device |
| CN202861742U (en) * | 2012-08-20 | 2013-04-10 | 成都华川电装有限责任公司 | Pressing installation tool for hole shaft interference fit |
| CN103717909A (en) * | 2011-08-04 | 2014-04-09 | 诺克有限公司 | An axial blower |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000188854A (en) * | 1998-10-15 | 2000-07-04 | Denso Corp | Drive system in vehicle |
| JP2005102460A (en) * | 2003-08-29 | 2005-04-14 | Toyota Motor Corp | Rotor of rotating electric machine |
-
2014
- 2014-05-22 CN CN201410218289.4A patent/CN104028946B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201760740U (en) * | 2010-08-30 | 2011-03-16 | 天津达祥精密工业有限公司 | Pin pressing machine provided with pressure detecting device |
| CN103717909A (en) * | 2011-08-04 | 2014-04-09 | 诺克有限公司 | An axial blower |
| CN202301355U (en) * | 2011-11-03 | 2012-07-04 | 苏州东风精冲工程有限公司 | Double-end pressing riveting pin and rivet pressing device |
| CN202861742U (en) * | 2012-08-20 | 2013-04-10 | 成都华川电装有限责任公司 | Pressing installation tool for hole shaft interference fit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104028946A (en) | 2014-09-10 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 310018 No. 18, No. 22, Hangzhou economic and Technological Development Zone, Zhejiang Patentee after: Hangzhou Zhongneng Turbine Machinery Equipment Co.,Ltd. Country or region after: China Address before: 310018 No. 18, No. 22, Hangzhou economic and Technological Development Zone, Zhejiang Patentee before: HANGZHOU CHINEN STEAM TURBINE POWER CO.,LTD. Country or region before: China |
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| CP03 | Change of name, title or address |