CN104388892A - Co-Al permeating furnace device for hollow turbine blade of combustion gas turbine - Google Patents
Co-Al permeating furnace device for hollow turbine blade of combustion gas turbine Download PDFInfo
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- CN104388892A CN104388892A CN201410666707.6A CN201410666707A CN104388892A CN 104388892 A CN104388892 A CN 104388892A CN 201410666707 A CN201410666707 A CN 201410666707A CN 104388892 A CN104388892 A CN 104388892A
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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
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention discloses a Co-Al permeating furnace device for a hollow turbine blade of a combustion gas turbine. The Co-Al permeating furnace device mainly comprises a heating furnace body, an electrical heating element, a furnace lid, a furnace pot, a vacuum-pumping system, a temperature control system, a thermocouple and the like. The Co-Al permeating furnace device has the beneficial effects that a Co-Al permeating method of the Co-Al permeating furnace device belongs to a gas-phase metal diffusion process, and adopts a one-step diffusion method; and the basic principle is as follows: a diffusion metal is activated through an activating agent such as a halogen or a halogen compound, is deposited on the metal surface under a vacuum or protective atmosphere condition, and reacts with matrix alloy to diffuse, so as to form a diffused metal or compound.
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:
Along with the development of gas turbine technology, turbine intake temperature is also more and more higher, this just requires the hot-end components such as combustion engine turbine, especially moving turbine blade and turning vane can carry out work under more exacting terms, apply metal infiltration layer over the paddle, it is one of effective way solving this kind of problem, it can improve anti-oxidant, the corrosion resistance nature of part significantly, ensure that part at high temperature normally works and extends its work-ing life, in general, to the major requirement of metal infiltration layer be: excellent resistance to high temperature oxidation, corrosion resistance nature, infiltration layer and matrix have good bonding force, minimum and the requirement that can meet the specification to the Effect on Mechanical Properties of body material, has good thermal fatigue property, technique is simple as far as possible, favorable reproducibility, with low cost, turbine blade oozes Co-Al coating, belong to modified aluminide coating, concerning blade base nickel-bass alloy material, the main phase that calorized coating is formed is β-NiAl, when singly oozing, its antioxidant property is better, but still it is large to there is fragility, easily there is mutual diffusion in coating-substrate, easily there is martensitic transformation in the NiAl phase of rich nickel, the problems such as not resistance to sulfuration and thermal etching, therefore, the application of aluminide coating 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 of oozing Co-Al coating is generally and adopts the method for metal fever diffusion to make blade surface alloying form the high-temperaure coating of diffusion-bonded, this kind of thermodiffusion coating has a step and two step diffusion processs, this novel Co-Al infiltration layer method of oozing Co-Al furnace apparatus, belong to vapor phase metal diffusion technique, adopt a step diffusion process, ultimate principle be by diffuse metal by activator as halogen or halogen compound activate, under vacuum or protective atmosphere condition, deposit to metallic surface and and matrix alloy Reaction-diffusion terms formation diffuse metal or compound.
summary of the invention:
The object of the present invention is to provide and a set ofly effectively can realize the novel of hollow turbine vane surface C o-Al infiltration layer and ooze Co-Al furnace apparatus, meet internal combustion turbine requirement to hot corrosion resistance under working condition.
Technical scheme of the present invention is: hollow turbine blade of combustion gas turbine oozes Co-Al furnace apparatus, primarily of heating furnace body, electrical heating element, bell, retort, pumped vacuum systems, the composition such as temperature controlling system and thermopair, wherein, heating furnace body is by furnace shell, the compositions such as furnace lining, furnace shell top bell cap seal, connect with bolt, the upright supports of stretching 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 steel plate, the corresponding position perforate of furnace shell side electrical heating element eduction rod and thermopair, and mounting flange seat, be provided with hanging window shutter electrode shield,
Furnace lining is composite structure, light weeight alumina brick builds into well type furnace by laying bricks or stones in furnace shell, build by laying bricks or stones in burner hearth and put brick, rock wool layer is posted outside burner hearth, the space of high aluminum silicate fiber filled between burner hearth and furnace shell, asbestos calcium silicate board with microporous is close to the internal surface of furnace shell steel plate, and the easy colliding part of fire door adopts heavy brick masonry, and metal guide ring is set, burner hearth top and bottom are by heavy brick masonry;
Electrical heating element is selected φ 6mm resistance wire to turn to spirrillum and is installed on to put in brick and to fix with plate on burner hearth interior wall, and the connection of resistance wire lead bar adopts the syndeton of gradually excessive current; .
Retort comprises tank body, the airtight welding end socket of tank base, end socket and tank body junction are welded with end socket dividing plate, tank body upper weld tank flange, tank flange bottom and bell are tightly connected, tank flange top connects cover, cover center is provided with motor, cover 25 is stretched in motor shaft sealing, and the motor shaft stretching into cover connects impeller, has pod to connect cover below impeller, pod 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 adopts GH3039 material, and wall thickness is not less than 10mm, and sheet material rolls into cylindrical shape, end socket adopts GH3039 material, and wall thickness is not less than 10mm, and tank flange adopts 0Cr25Ni20, thickness 35mm, retort postwelding carries out bulge test and does flaw detection experiment, withstand voltage under guaranteeing tank body room temperature >=0.4MPa;
Pumped vacuum systems is made up of magnetic valve and strainer, strainer with 0Cr25Ni20 heat resisting pipe as filter housing body;
Vacuum Monitoring systems selects digital display vacuum manometer to be arranged on filter front pipeline, is with 485 communication interfaces, analog signal output, control accuracy≤1%, and time of response 1s, cover is equipped with vacuum pressure gauge;
Temperature controlling system adopts tank temp, cover has through hole and installs thermopair.
The present invention has following beneficial effect: this novel Co-Al infiltration layer method of oozing Co-Al furnace apparatus; belong to vapor phase metal diffusion technique; adopt a step diffusion process; ultimate principle be by diffuse metal by activator as halogen or halogen compound activate; under vacuum or protective atmosphere condition, deposit to metallic surface and and matrix alloy Reaction-diffusion terms formation diffuse metal or compound.
accompanying drawing illustrates:
Fig. 1 is surface structure schematic diagram of the present invention;
Accompanying drawing 2 is A-A sectional views of accompanying drawing 1.
1-magnetic valve in figure; 2-motor; 3-bell; 4-tank flange; 5-furnace shell; 6-impeller; 7-pod; 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-strainer, 24-digital display vacuum manometer, 25-cover.
embodiment:
Below in conjunction with accompanying drawing, the invention will be further described:
Shown in Fig. 1 composition graphs 2, hollow turbine blade of combustion gas turbine oozes Co-Al furnace apparatus, primarily of heating furnace body, electrical heating element, bell, retort, pumped vacuum systems, the composition such as temperature controlling system and thermopair, wherein, heating furnace body is by furnace shell 5, the compositions such as furnace lining, furnace shell 5 top bell 3 cap seal, connect with bolt, 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 steel plate, the corresponding position perforate of furnace shell 5 side electrical heating element eduction rod 14 and thermopair 16, and mounting flange seat, be provided with hanging window shutter electrode shield,
Furnace lining is composite structure, light weeight alumina brick builds into well type furnace 12 by laying bricks or stones in furnace shell 5, 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 internal surface of furnace shell 5 steel plate, and the easy colliding part of fire door adopts 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;
Electrical heating element is selected φ 6mm resistance wire 15 to turn to spirrillum and is installed on to put in brick 13 and to fix with plate on burner hearth interior wall, and the connection of resistance wire 15 eduction rod 14 adopts the syndeton of gradually excessive current; .
Retort comprises 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 and bell 3 are tightly connected, tank flange 4 top connects cover 25, cover 25 center is provided with motor 2, cover 25 is stretched in motor 2 shaft seal, the motor shaft stretching into cover 25 connects impeller 6, pod 7 is had to connect cover 25 below impeller 6, pod 7 center has through hole, end socket dividing plate 21 surrounding and center have through hole, end socket dividing plate is placed with some bins 18, bin 18 center has through hole,
Tank body 19 adopts GH3039 material, wall thickness is not less than 10mm, sheet material rolls into cylindrical shape, end socket 17 adopts GH3039 material, wall thickness is not less than 10mm, and tank flange 4 adopts 0Cr25Ni20, thickness 35mm, retort postwelding carries out bulge test and does flaw detection experiment, withstand voltage under guaranteeing tank body room temperature >=0.4MPa;
Pumped vacuum systems is made up of magnetic valve 1 and strainer 23, and strainer 23 uses 0Cr25Ni20 heat resisting pipe as filter housing body;
Vacuum Monitoring systems selects digital display vacuum manometer 24 to be arranged on filter front pipeline, is with 485 communication interfaces, analog signal output, control accuracy≤1%, and time of response 1s cover 25 is equipped with vacuum pressure gauge 24;
Temperature controlling system adopts tank temp, cover 25 has through hole and installs thermopair 16.
Temperature controlling system adopts tank temp, and temperature control method is cascade control system temperature control, leads two heating zone temperature control instrument work by the master instrument in tank.Cascade control system is used for Large-lag System, as this equipment (in tank, temperature hysteresis is in the outer temperature of tank).Cascade control system brief introduction is as follows: this Controlling System adopts 4 pieces of intelligent temperature controller temperature controls, they are numbered table 1, table 2, table 3, table 4 respectively, 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 to the outer temperature control of tank corresponding table 3, table 4, table 3, table 4 outputting analog signal is to power regulator, control electrical heating element works, 485 communication interfaces are with by table 1, table 2, 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) on the menu of instrument, the alarming value of temperature, type of alarm, temperature upper lower limit value etc. can be set and be selected according to polytechnic practical situation.
Monitoring, overtemperature alarm table adopt digital temperature control instrument., can effectively avoid because of the inefficacy of master control thermopair or deviation and the race temperature accident caused as monitoring temperature pick-up transducers owing to have employed independently thermopair.
System also has sound and light of alarm, is furnished with automatic cut-off power function, makes equipment safe and reliable to operation.
Registering instrument is 6 passages, pen type simulation curve, and numerical monitor and multiple color print, and the setting of record furnace temperature, controls and the temperature of multiple spot reality, and record the situation of furnace pressure, recording paper is wide is 180mm simultaneously, thermograph precision≤4 DEG C/mm.
Adopt 5 S type thermocouples, wherein 3 is single core armoured thermocouple, and as thermograph, temperature control, overtemperature alarm and system check in tank filling, other 2 is single core thermopair, controls respectively and report to the police outside tank to heating unit.
Electrically heated topworks selects the power regulator of the solid-state relay of contactless, sparkless, attonity noise.For the ease of the adjustment of temperature uniformity, this temperature controlling system have employed single-phase phase-shift voltage regulating power regulator, can in temperature uniformity testing process the heating power of the every heat phase element of manual regulation, namely stove large part of dispelling the heat suitably manually can strengthen heating power, stove few part of dispelling the heat suitably manually can reduce heating power, the upper and lower uniform temperature fields of pit furnace can be made like this, reach desirable temperature uniformity.
Regulator cubicle housing panel is provided with thermometric instrument, recording meter, system total voltage, electric current indicator gauge, fire door lifting/lowering push button and pilot lamp, manual/auto transfer lever etc.Recorder carrier is left in cabinet.Housing instrument panel height is looked squarely with operator and is as the criterion.Adjusting apparatus suitably and forceful electric power isolate.Domestic famous brand name product selected by each control isolating switch, contactor, and MY-4N(OMRON selected by intermediate relay).Pipeline installation and crane span structure lay and lay by national relevant specification and standard.
Claims (1)
1. a hollow turbine blade of combustion gas turbine oozes Co-Al furnace apparatus, primarily of heating furnace body, electrical heating element, bell, retort, pumped vacuum systems, the composition such as temperature controlling system and thermopair, it is characterized in that: heating furnace body is by furnace shell (5), the compositions such as furnace lining, furnace shell (5) top bell (3) cap seal, connect with bolt, 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 steel plate, the corresponding position perforate of furnace shell (5) side electrical heating element eduction rod (14) and thermopair (16), and mounting flange seat, be provided with hanging window shutter electrode shield,
Furnace lining is composite structure, 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 internal surface of furnace shell (5) steel plate, the easy colliding part of fire door adopts 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);
Electrical heating element is selected φ 6mm resistance wire (15) to turn to spirrillum and is installed on to put in brick (13) and to fix with plate on burner hearth interior wall, and the connection of resistance wire (15) eduction rod (14) adopts the syndeton of gradually excessive current;
Retort comprises 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 and bell (3) are tightly connected, tank flange (4) top connects cover (25), cover (25) center is provided with motor (2), cover (25) is stretched in motor (2) shaft seal, the motor shaft stretching into cover (25) connects impeller (6), impeller (6) below has pod (7) to connect cover (25), pod (7) center has through hole, end socket dividing plate (21) surrounding and center have through hole, end socket dividing plate (21) is placed with some bins (18), bin (18) center has through hole,
Tank body (19) adopts GH3039 material, wall thickness is not less than 10mm, sheet material rolls into cylindrical shape, end socket (17) adopts GH3039 material, wall thickness is not less than 10mm, and tank flange (4) adopts 0Cr25Ni20, thickness 35mm, retort postwelding carries out bulge test and does flaw detection experiment, withstand voltage under guaranteeing tank body room temperature >=0.4MPa;
Pumped vacuum systems is made up of magnetic valve (1) and strainer (23), and strainer (23) uses 0Cr25Ni20 heat resisting pipe as filter housing body;
Vacuum Monitoring systems selects digital display vacuum manometer (24) to be arranged on filter front pipeline, be with 485 communication interfaces, analog signal output, control accuracy≤1%, time of response 1s, cover (25) is equipped with vacuum pressure gauge (24);
Temperature controlling system adopts tank temp, cover (25) has through hole and installs thermopair (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 |
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| Application Number | Priority Date | Filing Date | Title |
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| 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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| CN104388892A true CN104388892A (en) | 2015-03-04 |
| CN104388892B CN104388892B (en) | 2017-01-04 |
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Citations (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. |
| EP1209247A1 (en) * | 2000-09-20 | 2002-05-29 | 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 |
-
2014
- 2014-11-20 CN CN201410666707.6A patent/CN104388892B/en active Active
Patent Citations (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. |
| EP1209247A1 (en) * | 2000-09-20 | 2002-05-29 | 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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| CN104388892B (en) | 2017-01-04 |
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