CN104388892B - Hollow turbine blade of combustion gas turbine oozes Co-Al furnace apparatus - Google Patents
Hollow turbine blade of combustion gas turbine oozes Co-Al furnace apparatus Download PDFInfo
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- CN104388892B CN104388892B CN201410666707.6A CN201410666707A CN104388892B CN 104388892 B CN104388892 B CN 104388892B CN 201410666707 A CN201410666707 A CN 201410666707A CN 104388892 B CN104388892 B CN 104388892B
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- furnace
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- end socket
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
- C23C10/06—Solid state diffusion of only metal elements or silicon into metallic material surfaces using gases
- C23C10/14—Solid state diffusion of only metal elements or silicon into metallic material surfaces using gases more than one element being diffused in one step
Abstract
The present invention proposes hollow turbine blade of combustion gas turbine and oozes Co Al furnace apparatus.Mainly it is made up of heating furnace body, heating, bell, retort, pumped vacuum systems, temperature control system and thermocouple etc..There is advantages that a novel Co Al infiltration layer method oozing Co Al furnace apparatus; belong to vapor phase metal diffusion technique; use a step diffusion method; ultimate principle is to be activated by activator such as halogen or halogen compound by diffusion metal; under the conditions of vacuum or protective atmosphere, also and matrix alloy Reaction-diffusion terms forms diffusion metal or compound to deposit to metal surface.
Description
Technical field
The present invention relates to Thermal Energy and Power Engineering field, specifically a kind of hollow turbine blade of combustion gas turbine oozes Co-Al furnace apparatus.
Background technology
Development along with gas turbine technology, turbine inlet temperature (TIT) is more and more higher, this just requires the hot-end components such as combustion engine turbine, especially moving turbine blade and guide vane can be operated under more exacting terms, apply metal infiltration layer over the paddle, it it is one of the effective way of such issues that solve, it can significantly improve the antioxidation of part, decay resistance, ensure that part the most normally works and extends its service life, in general, the major requirement to metal infiltration layer is: excellent resistance to high temperature oxidation, decay resistance；Infiltration layer and matrix have good adhesion；To the Effect on Mechanical Properties of matrix material, the minimum and requirement that can meet the specification, has preferable thermal fatigue property；nullTechnique is the simplest，Favorable reproducibility、With low cost，Turbo blade oozes Co-Al coating，Belong to modified aluminide coating，For blade base nickel-bass alloy material，The main phase that calorized coating is formed is β-NiAl，When singly oozing，Its antioxygenic property is preferable，But it is big to still suffer from fragility、Easily there is counterdiffusion in coating-substrate、Easily there is martensitic phase transformation in the NiAl phase of rich nickel、It is weak to the problems such as sulfuration and heat erosion，Therefore，The application of coat of aluminide improves the performance of single impregnation coating，Wherein，Ooze Co-Al to be mainly used in improving blade inner chamber hot corrosion resistance，The preparation method oozing Co-Al coating generally uses the method for metal fever diffusion to make blade surface alloying form the high-temperaure coating of diffusion bond，This kind of thermal diffusion coating has a step and two step diffusion methods，This novel Co-Al infiltration layer method oozing Co-Al furnace apparatus，Belong to vapor phase metal diffusion technique，Use a step diffusion method，Ultimate principle is to be activated by activator such as halogen or halogen compound by diffusion metal，Under the conditions of vacuum or protective atmosphere，Also and matrix alloy Reaction-diffusion terms forms diffusion metal or compound to deposit to metal surface.
Summary of the invention
It is an object of the invention to provide and a set of can effectively realize the novel of hollow turbine vane surface C o-Al infiltration layer and ooze Co-Al furnace apparatus, meet the gas turbine requirement to hot corrosion resistance under working condition.
The technical scheme is that hollow turbine blade of combustion gas turbine oozes Co-Al furnace apparatus, main by heating furnace body, heating, bell, retort, pumped vacuum systems, temperature control system and thermocouple etc. form, wherein, heating furnace body is by furnace shell, furnace linings etc. form, furnace shell top bell lid seals, it is connected with, the upright supports stretched out with furnace body skeleton at the bottom of furnace shell is on foundation, being welded with circular furnace lining supporting plate bottom furnace shell makes furnace lining structure build by laying bricks or stones on this supporting plate, furnace shell side heating eduction rod and the relevant position perforate of thermocouple, and mounting flange seat, it is provided with hanging shutter electrode shield；
Furnace lining is composite construction, well type furnace built in furnace shell by laying bricks or stones by light weeight alumina brick, build by laying bricks or stones in burner hearth and put brick, rock wool layer is posted outside burner hearth, high aluminum silicate fiber is filled in the space between burner hearth and furnace shell, and asbestos calcium silicate board with microporous is close to the inner surface of furnace shell steel plate, and the easy colliding part of fire door uses heavy brick masonry, and metal guide ring is set, burner hearth top and bottom are by heavy brick masonry；
Heating select φ 6mm resistance wire to turn to helical form is installed on burner hearth interior wall put brick in and fix with plate, the attachment structure being connected by gradually excessive current of resistance wire lead bar；
Retort includes tank body, tank base airtight welding end socket, end socket and tank body junction are welded with end socket dividing plate, tank body upper weld tank flange, tank flange bottom is tightly connected with bell, tank flange top connects cover, cover center is provided with motor, motor shaft seals and stretches into cover 25, and the motor shaft stretching into cover connects impeller, has kuppe to connect cover below impeller, kuppe center has through hole, end socket dividing plate surrounding and center have through hole, and end socket dividing plate is placed with some bins, and bin center has through hole；
Tank body uses GH3039 material, and wall thickness is not less than 10mm, and sheet material rolls into cylindrical shape, end socket uses GH3039 material, and wall thickness is not less than 10mm, and tank flange uses 0Cr25Ni20, thickness 35mm, retort postwelding carries out bulge test and does flaw detection experiment, it is ensured that pressure under tank body room temperature >=0.4MPa；
Pumped vacuum systems is made up of electromagnetic valve and filter, filter with 0Cr25Ni20 heat resisting pipe as filter housing body；
Vacuum monitoring system selects digital display pressure vacuum ga(u)ge to be arranged on filter front pipeline, carries 485 communication interfaces, analog signal output, control accuracy≤1%, and response time 1s, equipped with pressure vacuum ga(u)ge on cover；
Temperature control system uses tank temp, cover has through hole and installs thermocouple.
There is advantages that a novel Co-Al infiltration layer method oozing Co-Al furnace apparatus; belong to vapor phase metal diffusion technique; use a step diffusion method; ultimate principle is to be activated by activator such as halogen or halogen compound by diffusion metal; under the conditions of vacuum or protective atmosphere, also and matrix alloy Reaction-diffusion terms forms diffusion metal or compound to deposit to metal surface.
Accompanying drawing illustrates:
Fig. 1 is the surface structure schematic diagram of the present invention；
Accompanying drawing 2 is the A-A profile of accompanying drawing 1.
1-electromagnetic valve in figure；2-motor；3-bell；4-tank flange；5-furnace shell；6-impeller；7-kuppe；8-high aluminum silicate fiber；9-heavy brick, 10-metal guide ring, 11-rock wool layer, 12-burner hearth, 13-puts brick, 14-eduction rod, 15-resistance wire, 16-electroheat pair, 17-end socket, 18-bin dish, 19-tank body, 20-asbestos calcium silicate board with microporous, 21-end socket dividing plate, 22-vacuum meter, 23-filter, 24-digital display pressure vacuum ga(u)ge, 25-cover.
Detailed description of the invention:
The invention will be further described below in conjunction with the accompanying drawings:
Combined shown in Fig. 2 by Fig. 1, hollow turbine blade of combustion gas turbine oozes Co-Al furnace apparatus, main by heating furnace body, heating, bell, retort, pumped vacuum systems, temperature control system and thermocouple etc. form, wherein, heating furnace body is by furnace shell 5, furnace linings etc. form, furnace shell 5 top bell 3 lid envelope, it is connected with, the upright supports that furnace shell 5 end stretches out with furnace body skeleton is on foundation, being welded with circular furnace lining supporting plate bottom furnace shell 5 makes furnace lining structure build by laying bricks or stones on this supporting plate, , furnace shell 5 side heating eduction rod 14 and the relevant position perforate of thermocouple 16, and mounting flange seat, it is provided with hanging shutter electrode shield；
Furnace lining is composite construction, well type furnace 12 built in furnace shell 5 by laying bricks or stones by light weeight alumina brick, build by laying bricks or stones in burner hearth 12 and put brick 13, rock wool layer 11 is posted outside burner hearth, high aluminum silicate fiber 8 is filled in the space between burner hearth 12 and furnace shell 5, and asbestos calcium silicate board with microporous 20 is close to the inner surface of furnace shell 5 steel plate, and the easy colliding part of fire door uses heavy brick 9 to build by laying bricks or stones, and metal guide ring 10 is set, burner hearth top and bottom are built by laying bricks or stones by heavy brick 9；
Heating select φ 6mm resistance wire 15 to turn to helical form is installed on burner hearth interior wall put brick 13 in and fix with plate, the attachment structure being connected by gradually excessive current of resistance wire 15 eduction rod 14.
Retort includes tank body 19, airtight welding end socket 17 bottom tank body 19, end socket 17 and tank body 19 junction are welded with end socket dividing plate 21, tank body 19 upper weld tank flange 4, tank flange 4 bottom is tightly connected with bell 3, tank flange 4 top connects cover 25, cover 25 center is provided with motor 2, cover 25 is stretched in motor 2 sealing, the motor shaft stretching into cover 25 connects impeller 6, kuppe 7 is had to connect cover 25 below impeller 6, kuppe 7 center has through hole, end socket dividing plate 21 surrounding and center have through hole, some bins 18 it are placed with on end socket dividing plate, bin 18 center has through hole；
Tank body 19 uses GH3039 material, and wall thickness is not less than 10mm, and sheet material rolls into cylindrical shape, end socket 17 uses GH3039 material, and wall thickness is not less than 10mm, and tank flange 4 uses 0Cr25Ni20, thickness 35mm, retort postwelding carries out bulge test and does flaw detection experiment, it is ensured that pressure under tank body room temperature >=0.4MPa；
Pumped vacuum systems is made up of electromagnetic valve 1 and filter 23, and filter 23 uses 0Cr25Ni20 heat resisting pipe as filter housing body；
Vacuum monitoring system selects digital display pressure vacuum ga(u)ge 24 to be arranged on filter front pipeline, carries 485 communication interfaces, analog signal output, control accuracy≤1%, and response time 1s, equipped with pressure vacuum ga(u)ge 24 on cover 25；
Temperature control system uses tank temp, cover 25 has through hole and installs thermocouple 16.
Temperature control system uses tank temp, and temperature control method is cascade control system temperature control, the master instrument in tank lead two thermal treatment zone temperature control instrument work.Cascade control system is used for Large-lag System, such as this equipment (in tank, temperature lag is in the outer temperature of tank).Cascade control system brief introduction is as follows: this control system uses 4 pieces of intelligent temperature controller temperature controls, they difference numbered table 1, table 2, table 3, tables 4, in tank, thermocouple signal is input to table 1, table 1 utilizes simulation sending function that thermocouple signal in tank is passed to table 2, table 1, table 2 calculate accurate pid parameter according to thermocouple signal in tank and export table 3, the table 4 that temperature control is corresponding outward to tank, table 3, table 4 export analogue signal to power regulator, control heating work, table 1, table 2 carry 485 communication interfaces, are directly connected on team control computer.Temperature control instrument SRS13A(0.25 level, PID Self-tuning System, 32 sections able to programme, with 485 communication interfaces) according to polytechnic practical situation, the alarming value of temperature, type of alarm, temperature upper lower limit value etc. can be set and select on the menu of instrument.
Monitoring, overtemperature alarm table use digital temperature control instrument.Due to have employed independent thermocouple as monitoring temperature acquisition sensor, the race temperature accident caused because of inefficacy or the deviation of master control thermocouple can be effectively prevented from.
System also has sound and light of alarm, is furnished with and automatically cuts off power supply function, makes equipment safe and reliable to operation.
Monitor is 6 passages, pen type simulation curve, and numerical monitor and multiple color print, and record furnace temperature sets, controls and the temperature of multiple spot reality, records the situation of furnace pressure simultaneously, records a width of 180mm of paper, thermograph precision≤4 DEG C/mm.
Using 5 S type thermocouples, wherein 3 is single armoured thermocouple, loads in tank as thermograph, temperature control, overtemperature alarm and system check, and other 2 is single thermocouple, is controlled heating element heater respectively and reports to the police outside tank.
Electrical heating actuator selection is contactless, the power regulator of the solid-state relay of no-spark, attonity noise.Regulation for the ease of temperature uniformity, this temperature control system have employed single-phase phase-shift voltage regulating power regulator, the heating power of every heat phase element can be manually regulated during temperature uniformity detects, the i.e. big part of stove heat radiation can the most manually strengthen heating power, the few part of stove heat radiation can the most manually reduce heating power, so can make the upper and lower uniform temperature fields of shaft furnace, reach preferable temperature uniformity.
Thermometric instrument, recording apparatus, system total voltage, electric current display table, fire door lifting/lowering control knob and display lamp, manual/auto permutator etc. it is provided with on regulator cubicle switch board panel.Recorder carrier is left in cabinet.Switch board instrument face plate height is looked squarely with operator and is as the criterion.Adjusting apparatus is suitably isolated with forceful electric power.Domestic famous brand name product selected by each control chopper, catalyst, and MY-4N(OMRON selected by auxiliary reclay).Pipelining and crane span structure lay and lay by the relevant codes and standards of country.
Claims (1)
1. a hollow turbine blade of combustion gas turbine oozes Co-Al furnace apparatus, main by heating furnace body, heating, bell, retort, pumped vacuum systems, temperature control system and thermocouple composition, it is characterized in that: heating furnace body is by furnace shell (5), furnace lining forms, furnace shell (5) top bell (3) lid envelope, it is connected with, the upright supports that furnace shell (5) end stretches out with furnace body skeleton is on foundation, furnace shell (5) bottom is welded with circular furnace lining supporting plate makes furnace lining structure build by laying bricks or stones on this supporting plate, furnace shell (5) side heating eduction rod (14) and the relevant position perforate of thermocouple (16), and mounting flange seat, it is provided with hanging shutter electrode shield；
Furnace lining is composite construction, well type furnace (12) is built into by laying bricks or stones in furnace shell (5) inside with light weeight alumina brick, build by laying bricks or stones in burner hearth (12) and put brick (13), rock wool layer (11) is posted outside burner hearth, high aluminum silicate fiber (8) is filled in the space between burner hearth (12) and furnace shell (5), asbestos calcium silicate board with microporous (20) is close to the inner surface of furnace shell (5) steel plate, the easy colliding part of fire door uses heavy brick (9) to build by laying bricks or stones, and metal guide ring (10) is set, burner hearth top and bottom are built by laying bricks or stones by heavy brick (9)；
Heating select φ 6mm resistance wire (15) to turn to helical form is installed on burner hearth interior wall put brick (13) in and fix with plate, the attachment structure being connected by gradually excessive current of resistance wire (15) eduction rod (14)；
Retort includes tank body (19), the airtight welding end socket (17) in tank body (19) bottom, end socket (17) and tank body (19) junction are welded with end socket dividing plate (21), tank body (19) upper weld tank flange (4), tank flange (4) bottom is tightly connected with bell (3), tank flange (4) top connects cover (25), cover (25) center is provided with motor (2), cover (25) is stretched in motor (2) sealing, the motor shaft stretching into cover (25) connects impeller (6), impeller (6) lower section has kuppe (7) to connect cover (25), kuppe (7) center has through hole, end socket dividing plate (21) surrounding and center have through hole, some bins (18) it are placed with on end socket dividing plate (21), bin (18) center has through hole；
Tank body (19) uses GH3039 material, wall thickness is not less than 10mm, sheet material rolls into cylindrical shape, end socket (17) uses GH3039 material, wall thickness is not less than 10mm, and tank flange (4) uses 0Cr25Ni20, thickness 35mm, retort postwelding carries out bulge test and does flaw detection experiment, it is ensured that pressure under tank body room temperature >=0.4MPa；
Pumped vacuum systems is made up of electromagnetic valve (1) and filter (23), and filter (23) uses 0Cr25Ni20 heat resisting pipe as filter housing body；
Vacuum monitoring system selects digital display pressure vacuum ga(u)ge (24) to be arranged on filter front pipeline, carry 485 communication interfaces, analog signal output, control accuracy≤1%, response time 1s, equipped with pressure vacuum ga(u)ge (24) on cover (25)；
Temperature control system uses tank temp, cover (25) has through hole and installs thermocouple (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410666707.6A CN104388892B (en) | 2014-11-20 | 2014-11-20 | Hollow turbine blade of combustion gas turbine oozes Co-Al furnace apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410666707.6A CN104388892B (en) | 2014-11-20 | 2014-11-20 | Hollow turbine blade of combustion gas turbine oozes Co-Al furnace apparatus |
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| Publication Number | Publication Date |
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| CN104388892A CN104388892A (en) | 2015-03-04 |
| CN104388892B true CN104388892B (en) | 2017-01-04 |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1197124A (en) * | 1997-04-23 | 1998-10-28 | 马学正 | Chromium-silicon-aluminium three elements cocementation method and appts. |
| US6602356B1 (en) * | 2000-09-20 | 2003-08-05 | General Electric Company | CVD aluminiding process for producing a modified platinum aluminide bond coat for improved high temperature performance |
| CN101565810A (en) * | 2009-06-09 | 2009-10-28 | 天津大学 | Preparation method and device for industrial microwave heating diffusion coating |
| CN204174264U (en) * | 2014-11-20 | 2015-02-25 | 哈尔滨广瀚燃气轮机有限公司 | Hollow turbine blade of combustion gas turbine oozes Co-Al furnace apparatus |
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