CN103075209B - Turbine and the black box for turbine - Google Patents

Abstract

The open a kind of metallic stator seal of the present invention.Described black box can include the first metallic gasket；Second metallic gasket；And it is positioned at the one or more elastic layers between described first metallic gasket and described second metallic gasket.

Description

Turbine and the black box for turbine

Technical field

The present invention relates generally to gas-turbine unit, more precisely, relate to having for subtracting Some metal levels of few leakage and the seal stator part of bed of cloth.

Background technology

Hot combustion gas and/or the leakage of cooling stream between turbine components typically result in electric power Output reduces and efficiency reduces.Such as, can be by providing the compression of supercharging around hot gas path Machine air makes hot combustion gas be contained in turbine.Therefore, high pressure cooling flows and drains to heat Gas passage can cause harmful parasitic loss (parasitic losses).Therefore, aggregate efficiency can The most only it is provided as desired to cooling stream by blocking leak position and is improved.

Such as, current combustion gas turbine can use cloth to seal between adjacent stator component Part limits the cooling of both parts and flows leakage.Such cloth sealing member can have braiding gold Belonging to the screen cloth bed of material, the described braided metal screen cloth bed of material " is herded by bend on its either side Sheep people's hook (shepherds hook) " it is wrapped in metallic gasket (shim) around.But, Manufacture the manufacture change related in shepherd's hook and whole cloth sealing member may affect through it In slip.Lower slip can be come by using thin metallic gasket between stator component Realize.But, up to the present, it is contemplated that about this type of sealing member intensity also have manufacture and Packing problem, uses this thin metallic gasket the most infeasible in heavy duty gas turbines.

Accordingly, it would be desirable between stator component in heavy duty gas turbine engine and other portions Improved black box is used between part.Such black box can the most heat-resisting, Wear-resisting and elastic, thus the component life of sufficient sealing effectiveness and reinforcement is provided.

Summary of the invention

Present invention accordingly provides a kind of black box for turbine.Described black box can wrap Include the first metallic gasket；Second metallic gasket；And it is positioned at the first metallic gasket and the second gold medal Belong to the one or more elastic layers between pad.

The present invention can further provide for a kind of turbine.Described turbine can include the first stator； Second stator；And it is positioned at the black box between the first stator and the second stator.Described close Sealing assembly can include a pair metallic gasket around one or more bed of cloths.

The present invention can further provide for a kind of turbine.Described turbine can include the first stator； Second stator；And it is positioned at the black box between the first stator and the second stator.Described close Sealing assembly may be included in the first metallic gasket of tip position；The second metal gasket at bottom position Sheet；And the first braided metal silk screen in centre position and the second braided metal silk screen.

Read described further below by combining some accompanying drawings and appended claims, affiliated The those skilled in the art in field are clearly understood that these and other features of the present invention and change Enter.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of gas-turbine unit, which illustrates compressor, combustor and turbine Machine.

Fig. 2 is the partial side view of turbine.

Fig. 3 be the seal stator assembly described by this specification side cross-sectional view.

Component symbol list:

Reference number	Parts	Reference number	Parts
				10	Gas-turbine unit	15	Compressor
20	Air-flow	25	Combustor
				30	Fuel stream	35	Burning gases stream
40	Turbine	45	Axle
				50	Load	55	First order nozzle
60	First order blade	65	The first order
				70	Second level nozzle	75	The second level
80	Dividing plate (diaphragm)	85	Stator
				90	Axle	95	Sealing member
100	Turbine	110	First turbine components
				120	Second turbine components	130	First jet
135	First stator	140	Second nozzle
				150	Second stator	160	Black box
170	First seal groove	180	Second seal groove
				190	Gap	200	First metallic gasket
210	Second metallic gasket	220	First bed of cloth
				230	Second bed of cloth	240	Braided metal silk screen
250	Tip position	260	Bottom position
				270	Centre position

Detailed description of the invention

Referring now to accompanying drawing, in the accompanying drawings, like numerals refers to the like in many secondary accompanying drawings, It it is the schematic diagram of the gas-turbine unit 10 that this specification may use shown in Fig. 1.Combustion gas Turbogenerator 10 can include compressor 15.The air-flow 20 entered is pressed by compressor 15 Contracting.The air-flow 20 of compression is transported to combustor 25 by compressor 15.Combustor 25 will compression Air-flow 20 mix with the fuel stream 30 of supercharging, and light described mixture to generate combustion gas Body stream 35.Although figure illustrate only a combustor 25, but gas-turbine unit 10 can Including any number of combustor 25.Burning gases stream 35 then be transported to turbine 40. Burning gases stream 35 drives turbine 40, thus produces mechanical power.Turbine 40 produces Mechanical power drive the external loadings 50 such as compressor 15, and such as electromotor via axle 45.

Gas-turbine unit 10 can use natural gas, various types of synthesis gas, and/or its The fuel of his type.Gas-turbine unit 10 can be to be positioned at New York, United States SIKA Nai Ta The General Electric Co. Limited (General Electric Company) of (Schenectady, New York) Any one in the some different gas-turbine units provided, includes, but is not limited to The heavy duty gas turbine engine of 7 or 9 series and similar gas-turbine unit.Combustion gas whirlpool Turbine 10 can have different configuration, and can use other kinds of parts.This explanation Book is used as other kinds of gas-turbine unit.This specification also can use multiple simultaneously Gas-turbine unit, other kinds of turbine, and other kinds of generating equipment.

Fig. 2 show a part for an example of turbine 40.Generally speaking, turbine 40 may be included in the first order nozzle 55 in the first order 65 and first order blade 60.Also illustrate The second level nozzle 70 of the second level 75.This specification can use any amount of level.Second Level nozzle 70 can be positioned about dividing plate 80.Nozzle 70 and dividing plate 80 form the one of stator 85 Part.Can be around the circumferentially positioned any amount of stator 85 of axle 90 in each level.Fixed Sub-sealing member 95 can be positioned between the adjacent stators 85 of dividing plate 80 or elsewhere. Seal stator part 95 prevents the cooling air-flow 20 from compressor from leaking at this.This specification Miscellaneous part and other configurations can be used.Such as, miscellaneous part can include protective cover, housing, Nozzle, transition piece etc..

Fig. 3 show each several part of an example of the turbine 100 described by this specification. Specifically, it is illustrated that the first turbine components 110 and the second turbine components 120.Turbine Machine parts 110,120 can be the first jet 130 and second of the first above-mentioned stator 135 The second nozzle 140 of stator 150, or any other adjacent turbine components pair.This explanation Book can use the turbine components of any quantity or type.

Turbine 100 can include black box 160, its be positioned at every pair of turbine components 110, Between 120.Black box 160 can the first seal groove 170 from the first turbine components 110 Extend to the second seal groove 180 in the second turbine components 120.Seal groove 170,180 can There is any size, shape or configuration.Between black box 160 plug members 110,120 Gap 190, thus prevent from cooling down air-flow 20 and spill through at this etc..Can in this specification Use other positions.

Black box 160 can include a pair metallic gasket: the first metallic gasket 200 and the second gold medal Belong to pad 210.Metallic gasket 200,210 can be relatively thin but firm metal charge.Gold Belong to pad 200,210 to be made up of the exotic material such as rustless steel or nickel-base alloy.This explanation Book can use other kinds of material.It is also possible to use extra metal gasket layer.

Black box 160 may also include a pair elastical cloth bed of material: the first bed of cloth 220 and second Bed of cloth 230.This specification can use any amount of elastical cloth bed of material 220,230.Bullet Property bed of cloth 220,230 can be made up of braided metal silk screen 240 or any resilient high temperature material. Such as, metal foam, hollow cell type pad can be used, or the spacer layer etc. of even extra soldered. First metallic gasket 200 can have tip position 250, and the second metallic gasket 210 can have the end Position, portion 260, and the elastical cloth bed of material 220,230 can have centre position 270.(term What " top ", " bottom ", " middle " reflected is relative position rather than absolute Position.) metallic gasket 200,210 and the elastical cloth bed of material 220,230 can pass through high temperature adhesives Agent, high-intensity fasteners, welding and other kinds of conventional fastening device and connect.Sealing group Part 160 and its parts can have any required size, shape or configuration.It is also possible to use extra Non-metallic filler material, thus wherein increase thickness and do not affect proof resilience.

Therefore, all use in tip position 250 and bottom position 260 metallic gasket 200, 210 allow to make black box 160 turning, i.e. black box 160 can be pacified by any position It is contained on the carrier surface in the seal groove 170,180 of turbine components 110,120.Metal Spacer layer 200,210 is used as sealing surfaces, thus provides through the low slip at this.As Fruit damages for some reason at the metallic gasket 210 of bottom position 260, then at top The metallic gasket 200 of position 250 also serves as auxiliary leakage barrier.Elastic bed of cloth 220, 230 provide thickness for black box 160, and the most do not increase total hardness.Elastic cloth Layer 220,230 also reduces potential assembling or maintenance issues.

Therefore, when being applied to heavy duty gas turbines, black box 160 provides and is similar to use The low slip being up to the standard during thin metallic gasket sealing member, eliminates manufacture simultaneously, assembles And strength problem.Additionally, compared with existing cloth sealing member, black box 160 is less susceptible to be subject to Manufacture the impact of change.Therefore, black box 160 is in the case of manufacture and operation risk are relatively low Reduce leakage.Black box 160 can be original device or a part for renovation style.

It will be appreciated that described above only relates to certain embodiments of the present invention.Art general The present invention can be done in the case of without departing from the general spirit of the present invention and scope by technical staff Multiple change and modifications, the general spirit of the present invention and scope by appended claims and etc. Effect thing definition.

Claims (15)

1. for a black box for turbine, comprising:

First metallic gasket, described first metallic gasket has tip position；

Second metallic gasket, described second metallic gasket has bottom position；And

One or more elastic layers, the one or more elastic layer has centre position and is positioned at Between described first metallic gasket and described second metallic gasket；

Wherein, the turning any position making available described black box of described black box is installed On carrier surface in the seal groove of turbine components, to prevent from cooling down spilling of air-flow.

Black box the most according to claim 1, wherein said one or more elastic layers Including one or more bed of cloths.

Black box the most according to claim 2, wherein said one or more bed of cloths Including the first bed of cloth and the second bed of cloth.

Black box the most according to claim 2, wherein said one or more bed of cloths Including braided metal silk screen.

Black box the most according to claim 1, wherein said first metallic gasket and institute State the second metallic gasket and include heat proof material.

Black box the most according to claim 1, wherein said first metallic gasket or institute Stating the one in the second metallic gasket and include sealing surfaces, described sealing surfaces seals towards first Gap between groove and the second seal groove.

Black box the most according to claim 6, wherein said first seal groove is positioned at In first turbine components, and described second seal groove is positioned in the second turbine components.

Black box the most according to claim 7, wherein said first turbine components bag Include the first stator, and described second turbine components includes the second stator.

9. a turbine, comprising:

First stator；

Second stator；And

Black box, described black box is positioned between described first stator and described second stator；

Described black box includes metallic gasket pair, and described metallic gasket is to around one or more cloth The bed of material；

Wherein, the first metallic gasket of described metallic gasket centering has tip position, described metal Second metallic gasket of pad centering has bottom position, and the one or more bed of cloth has Centre position；Further, described black box is turning makes the arbitrary of available described black box Position is arranged on the carrier surface in the seal groove of turbine components, to prevent from cooling down air-flow Spill.

Turbine the most according to claim 9, wherein said one or more bed of cloth bags Include the first bed of cloth and the second bed of cloth.

11. turbines according to claim 9, wherein said one or more bed of cloth bags Include braided metal silk screen.

12. turbines according to claim 9, wherein said metallic gasket is heat-resisting to including Material.

13. turbines according to claim 9, wherein said first stator includes that first is close Sealing groove, and described second stator includes the second seal groove.

14. turbines according to claim 13, the one of wherein said metallic gasket centering Individual metallic gasket includes sealing surfaces, described sealing surfaces towards described first seal groove with described Gap between second seal groove.

15. 1 kinds of turbines, comprising:

First stator；

Second stator；And

Black box, described black box is positioned between described first stator and described second stator；

Described black box is included in the first metallic gasket of tip position, at the second of bottom position Metallic gasket, and the first braided metal silk screen in centre position and the second braided metal silk Net；

Wherein, the turning any position making available described black box of described black box is installed On carrier surface in the seal groove of turbine components, to prevent from cooling down spilling of air-flow.