CN100423883C - Renovation technique of combustion turbine first order jet nozzle - Google Patents
Renovation technique of combustion turbine first order jet nozzle Download PDFInfo
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- CN100423883C CN100423883C CNB2005101308788A CN200510130878A CN100423883C CN 100423883 C CN100423883 C CN 100423883C CN B2005101308788 A CNB2005101308788 A CN B2005101308788A CN 200510130878 A CN200510130878 A CN 200510130878A CN 100423883 C CN100423883 C CN 100423883C
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- renovation technique
- order jet
- combustion turbine
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Abstract
The invention provides a gas turbine first grade nozzle repair art which is characterized as follows : 1) nozzle type model production; 2) nozzle solution heat treatment, the heat treatment process is: heat preservation for 1 ~ 3 hours under 1200 to 1500 DEG C; 3) the laser fusion cover repair of defect part: fusion pool diameter is 1~3mm, depth is 0.1~0.2mm, the heating time is 0.001 ~0.1 seconds, the fusion cover materials are metal powder fit with basal body;4) modification; 5) nozzle throat size detection; 6) nozzle aging treatment, aging treatment process is: heat preservation 4 to 6 hour at 950 ~ 1000 degree C, fast cooling to 500 ~ 560 degree C. The advantages of the repair technology are: achieving the high intensity combination repair of first grade and the repair art has good adaptability, small processing error, small thermal deformation, strong standard capability, and the repaired nozzle performance is clearly superior, it is of tremendous value.
Description
Technical field
The present invention relates to the maintenance and the detection technique of combustion turbine first order jet nozzle, the renovation technique of a kind of first order jet nozzle of gas turbine is provided especially.
Background technology
Gas turbine is a kind of dynamic power machine, and it provides power as working media for other plant equipment with certain liquid or gas.First order jet nozzle is one of critical component of gas turbine.Its first order jet nozzle accuracy class height, complex manufacturing technology, production cost height, cycle are long.The process conditions harshness of such first order jet nozzle, operating temperature is more than 1000 ℃.
The precision casting that is generally high temperature alloy of first order jet nozzle.Its vane type line all is a particular design, and strict quality requirement is arranged.So the first order jet nozzle manufacturing cost is very high, be subjected to the influence of external intellectual property, present domestic can not production, required part needs import, and price is more than 5,000,000, and the manufacturing cycle is also very long.
Be in operation, the poor working environment of first order jet nozzle, because the operating temperature height, and startup and shutdown of units is frequent, and first order jet nozzle is caught a cold influences such as heat fatigue, thermal shock seriously, cracks at blade surface; Because impurity or unexpected factor damaged in the fuel medium especially use heavy oil or crude oil to make the gas turbine of fuel, multiple harmful element is contained in its inside, and first order jet nozzle is corroded, and serious have the piece of a falling phenomenon.If make again, all be that user institute is unaffordable from the duration to the cost.Therefore, must take certain mode to keep in repair.
Common maintenance is argon arc welding and vacuum brazing at present.Argon arc welding is a metallurgical binding but its heat affected area is bigger, and base material is undergone phase transition; Vacuum brazing is non-metallurgical binding, and the bond strength of repairing the position is lower.
Summary of the invention
The object of the present invention is to provide a kind of base material not undergo phase transition, the renovation technique of the combustion turbine first order jet nozzle that the bond strength at reparation position is high with actual effect.
The invention provides a kind of renovation technique of combustion turbine first order jet nozzle, it is characterized in that process is as follows:
1) the nozzle type line tempte is made;
2) solution heat treatment of nozzle, Technology for Heating Processing is: be incubated 1～3 hour down at 1200～1500 ℃, slow cooling;
3) the laser melting coating reparation of defect: the molten bath diameter is 1～3mm, and the degree of depth is 0.1～0.2mm, and be 0.001～0.1s heat time heating time, and cladding material is the metal powder that adapts with matrix;
4) correction of the flank shape;
5) nozzle throat size detection;
6) Ageing Treatment of nozzle, aging technique is: be incubated 4～6 hours down at 950～1000 ℃, be as cold as 500～560 ℃ soon.
The renovation technique of combustion turbine first order jet nozzle provided by the invention, its nozzle throat size detection are to measure the roller 12 that detects frock with clearance gauge to determine the nozzle throat size with each interlobate gap of nozzle; Detecting frock is made up of nozzle location-plate 3, base 8, reference seat 13, reference block 10 and roller 12; Realize circumferentially location in the installation locating hole of nozzle location-plate 3 usefulness alignment pin I1 insertion nozzle, with the radial location of alignment pin II2 realization nozzle; Base 8 usefulness bolt I7 are fixed on the nozzle; Reference seat 13 is connected with base 8 by bolt II9, and the place, exhaust limit with alignment pin III5 is positioned nozzle vane uses the radial location of alignment pin IV6 realization to nozzle; Move along the reference pins on the reference seat 13 4 in the front of reference block 10; Roller 12 is connected with reference block 10 by connecting rod 11.
It can be that the intact relatively place of molded lines with 3～5 positions of appointment is that datum level carries out that the renovation technique of combustion turbine first order jet nozzle provided by the invention, its nozzle type line tempte are made, after the molded lines sample making is finished.
The renovation technique of combustion turbine first order jet nozzle provided by the invention sprays thermal barrier coating after the Ageing Treatment of its nozzle.
The renovation technique of combustion turbine first order jet nozzle provided by the invention, its advantage is: realized the reparation to the high strength bond of first order jet nozzle that additive method in the prior art be difficult for is realized, and this renovation technique adaptability is strong, mismachining tolerance is little, thermal deformation is little, standardization is strong, the combustion turbine first order jet nozzle performance after repairing also obviously is better than other method, has huge value.
Description of drawings
Fig. 1 is the structural representation of the renovation technique of combustion turbine first order jet nozzle with detection frock nozzle location-plate 3;
Fig. 2 is the plan structure schematic diagram of the renovation technique of combustion turbine first order jet nozzle with detection frock nozzle location-plate 3;
Fig. 3 is the structural representation of the renovation technique of combustion turbine first order jet nozzle with detection frock nozzle base 8 and reference seat 13;
Fig. 4 is the plan structure schematic diagram of the renovation technique of combustion turbine first order jet nozzle with detection frock nozzle base 8 and reference seat 13;
Fig. 5 is the structural representation of the renovation technique of combustion turbine first order jet nozzle with detection frock nozzle reference block 10 and roller 12;
Fig. 6 is that the renovation technique of combustion turbine first order jet nozzle detects schematic diagram with detecting frock.
The specific embodiment
The renovation technique of the first order jet nozzle of embodiment 1 general degree of impairment
Processing step is as follows:
1, the nozzle type line tempte is made:
1) blade selects the relative nozzle preferably of profile as the datum level of molded lines sample making;
2) select suitable spacing, make 3～5 molded lines models;
3) after the molded lines sample making is finished, the molded lines of all nozzles is checked;
2, nozzle is heat-treated to eliminate part stress; Technology for Heating Processing is: be incubated 1～3 hour down at 1200～1500 ℃, slow cooling;
3, laser melting coating:
1) defective of nozzle is cleared up;
2) the laser melting coating reparation is controlled at the position of clearing up automatically, laser melting coating molten bath diameter is that 1～3mm, pool depth are about 0.1～0.2mm, and be 0.001～0.1s heat time heating time, and cladding material is the metal powder that adapts with matrix;
4, be that standard is carried out reconditioning to the laser melting coating position with the molded lines model;
5, utilize special tooling to detect the nozzle throat size:
So-called throat dimension is meant the minimum dimension of two blades of nozzle at its place, exhaust limit.Because the profile of blade is that the space is fairshaped, the cross section of two blade compositions is again convergent from the air inlet to the exhaust, old nozzle since in use the profile of blade may deform, so when measuring throat dimension, must measure simultaneously in the maintenance process in the position of accurately determining smallest cross-sectional.
Detecting frock (shown in Fig. 1～5) is made up of nozzle location-plate 3, base 8, reference seat 13, reference block 10 and roller 12; Realize circumferentially location in the installation locating hole of nozzle location-plate 3 usefulness alignment pin I1 insertion nozzle, with the radial location of alignment pin II2 realization nozzle; Base 8 usefulness bolt I7 are fixed on the nozzle; Reference seat 13 is connected with base 8 by bolt II9, and the place, exhaust limit with alignment pin III5 is positioned nozzle vane uses the radial location of alignment pin IV6 realization to nozzle; Move along the reference pins on the reference seat 13 4 in the front of reference block 10; Roller 12 is connected with reference block 10 by connecting rod 11.
During detection frock is fixed on the nozzle, (as shown in Figure 6) moved along the reference pins on the reference seat 13 4 in the front of reference block 10, measure the roller 12 that detects frock with clearance gauge and determine the nozzle throat size, accurately determine the position of smallest cross-sectional and record the nozzle throat size with each interlobate gap of nozzle;
6, nozzle nondestructive inspection;
7, the Ageing Treatment of nozzle is incubated 4～6 hours down at 950～1000 ℃, is as cold as 500～560 ℃ soon;
8, spraying thermal barrier coating.
The renovation technique of the contact first order jet nozzle of embodiment 2 major injuries
Processing step is as follows:
1, the nozzle type line tempte is made:
1) blade selects the relative nozzle preferably of profile as the datum level of molded lines sample making;
2) select suitable spacing, make 3～5 molded lines models;
3) after the molded lines sample making is finished, the molded lines of all nozzles is checked;
2, nozzle is heat-treated eliminate stress; Technology for Heating Processing is: be incubated 1～3 hour down at 1200～1500 ℃, slow cooling;
3, the serious nozzle exhaust limit excision of damage;
4, make a new nozzle exhaust limit;
5, laser melting coating
1) defective of nozzle is cleared up;
2) the laser melting coating reparation is controlled at the position of clearing up automatically, laser melting coating molten bath diameter is that 1～3mm, pool depth are about 0.1～0.2mm, and be 0.001～0.1s heat time heating time, and cladding material is the metal powder that adapts with matrix;
6, the nozzle exhaust limit of coming of new and nozzle protocorm laser melting coating;
7, be that standard is carried out reconditioning to the laser melting coating position with the molded lines model;
8, utilize special tooling to detect the nozzle throat size, method is identical with embodiment 1;
9, nozzle nondestructive inspection;
10, the Ageing Treatment of nozzle is incubated 4～6 hours down at 950～1000 ℃, is as cold as 500～560 ℃ soon;
11, spraying thermal barrier coating.
Claims (5)
1. the renovation technique of a combustion turbine first order jet nozzle is characterized in that the operation of renovation technique is as follows:
1) the nozzle type line tempte is made;
2) molded lines of all nozzles is checked;
3) solution heat treatment of nozzle, Technology for Heating Processing is: be incubated 1～3 hour down at 1200～1500 ℃, slow cooling;
4) the laser melting coating reparation of defect: the molten bath diameter is 1～3mm, and the degree of depth is 0.1～0.2mm, and be 0.001～0.1s heat time heating time, and cladding material is the metal powder that adapts with matrix;
5) correction of the flank shape;
6) nozzle throat size detection;
7) Ageing Treatment of nozzle, aging technique is: be incubated 4～6 hours down at 950～1000 ℃, be as cold as 500～560 ℃ soon.
2. according to the renovation technique of the described combustion turbine first order jet nozzle of claim 1, it is characterized in that: described nozzle throat size detection is to measure the roller (12) that detects frock with clearance gauge to determine the nozzle throat size with each interlobate gap of nozzle; Detecting frock is made up of nozzle location-plate (3), base (8), reference seat (13), reference block (10) and roller (12); Realize circumferentially location in the installation locating hole of nozzle location-plate (3) with first alignment pin (1) insertion nozzle, realize the radial location of nozzle with second alignment pin (2); Base (8) is fixed on the nozzle with first bolt (7); Reference seat (13) is connected with base (8) by second bolt (9), and the exhaust limit that is positioned nozzle vane with the 3rd alignment pin (5) is located, with the radial location of the 4th alignment pin (6) realization to nozzle; Move along the reference pins (4) on the reference seat (13) in the front of reference block (10); Roller (12) is connected with reference block (10) by connecting rod (11).
3. according to the renovation technique of claim 1 or 2 described combustion turbine first order jet nozzles, it is characterized in that: it is that the intact relatively place of molded lines with 3～5 positions of appointment is that datum level carries out that described nozzle type line tempte is made.
4. according to the renovation technique of claim 1 or 2 described combustion turbine first order jet nozzles, it is characterized in that: spray thermal barrier coating after the Ageing Treatment of described nozzle.
5. according to the renovation technique of the described combustion turbine first order jet nozzle of claim 3, it is characterized in that: spray thermal barrier coating after the Ageing Treatment of described nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101308788A CN100423883C (en) | 2005-12-26 | 2005-12-26 | Renovation technique of combustion turbine first order jet nozzle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101308788A CN100423883C (en) | 2005-12-26 | 2005-12-26 | Renovation technique of combustion turbine first order jet nozzle |
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| Publication Number | Publication Date |
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| CN1990166A CN1990166A (en) | 2007-07-04 |
| CN100423883C true CN100423883C (en) | 2008-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2005101308788A Expired - Fee Related CN100423883C (en) | 2005-12-26 | 2005-12-26 | Renovation technique of combustion turbine first order jet nozzle |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100423884C (en) * | 2005-12-26 | 2008-10-08 | 沈阳大陆激光技术有限公司 | Detecting tools for combustion turbine first order jet nozzle renovation technique and renovation technique thereof |
| CN102009279B (en) * | 2010-12-13 | 2012-09-26 | 中国航空工业集团公司北京航空材料研究院 | Method for lowering crack sensitivity of aeroengine cast stainless steel component during repair welding |
| CN104084675B (en) * | 2014-07-03 | 2016-04-06 | 上海锅炉厂有限公司 | A kind of high-temperature nickel-base alloy welding procedure |
| CN111515534B (en) * | 2020-04-08 | 2021-12-21 | 哈尔滨汽轮机厂有限责任公司 | Manufacturing method and supporting tool for hula seal of gas turbine nozzle |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1191788A (en) * | 1997-02-25 | 1998-09-02 | 中国科学院金属腐蚀与防护研究所 | Laser reparation method of ablated worm gear disc of smoke exhauster in oil refinery |
| CN1199663A (en) * | 1997-05-17 | 1998-11-25 | 中国科学院金属腐蚀与防护研究所 | Technological process of laser repairing damage area in high-temperature and high-speed wheel disc |
| US6154959A (en) * | 1999-08-16 | 2000-12-05 | Chromalloy Gas Turbine Corporation | Laser cladding a turbine engine vane platform |
| US20050178750A1 (en) * | 2004-02-13 | 2005-08-18 | Kenny Cheng | Repair of article by laser cladding |
| CN1990167A (en) * | 2005-12-26 | 2007-07-04 | 沈阳大陆激光技术有限公司 | Detecting tools for combustion turbine first order jet nozzle renovation technique and renovation technique thereof |
-
2005
- 2005-12-26 CN CNB2005101308788A patent/CN100423883C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1191788A (en) * | 1997-02-25 | 1998-09-02 | 中国科学院金属腐蚀与防护研究所 | Laser reparation method of ablated worm gear disc of smoke exhauster in oil refinery |
| CN1199663A (en) * | 1997-05-17 | 1998-11-25 | 中国科学院金属腐蚀与防护研究所 | Technological process of laser repairing damage area in high-temperature and high-speed wheel disc |
| US6154959A (en) * | 1999-08-16 | 2000-12-05 | Chromalloy Gas Turbine Corporation | Laser cladding a turbine engine vane platform |
| US20050178750A1 (en) * | 2004-02-13 | 2005-08-18 | Kenny Cheng | Repair of article by laser cladding |
| CN1990167A (en) * | 2005-12-26 | 2007-07-04 | 沈阳大陆激光技术有限公司 | Detecting tools for combustion turbine first order jet nozzle renovation technique and renovation technique thereof |
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| CN1990166A (en) | 2007-07-04 |
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Granted publication date: 20081008 Termination date: 20111226 |