CN109578141A - It is a kind of can astern gas turbine power turbine exhaust volute - Google Patents
It is a kind of can astern gas turbine power turbine exhaust volute Download PDFInfo
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- CN109578141A CN109578141A CN201910064058.5A CN201910064058A CN109578141A CN 109578141 A CN109578141 A CN 109578141A CN 201910064058 A CN201910064058 A CN 201910064058A CN 109578141 A CN109578141 A CN 109578141A
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- volute
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- 239000007789 gas Substances 0.000 claims abstract description 56
- 238000003780 insertion Methods 0.000 claims abstract description 15
- 230000037431 insertion Effects 0.000 claims abstract description 15
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- 230000003014 reinforcing effect Effects 0.000 claims description 28
- 230000007704 transition Effects 0.000 claims description 18
- 239000003365 glass fiber Substances 0.000 claims description 13
- 239000005995 Aluminium silicate Substances 0.000 claims description 8
- PZZYQPZGQPZBDN-UHFFFAOYSA-N aluminium silicate Chemical compound O=[Al]O[Si](=O)O[Al]=O PZZYQPZGQPZBDN-UHFFFAOYSA-N 0.000 claims description 8
- 229910000323 aluminium silicate Inorganic materials 0.000 claims description 8
- 235000012211 aluminium silicate Nutrition 0.000 claims description 8
- 210000002268 wool Anatomy 0.000 claims description 8
- OBNDGIHQAIXEAO-UHFFFAOYSA-N [O].[Si] Chemical compound [O].[Si] OBNDGIHQAIXEAO-UHFFFAOYSA-N 0.000 claims 1
- 239000011521 glass Substances 0.000 claims 1
- 239000000567 combustion gas Substances 0.000 abstract description 13
- 239000000203 mixture Substances 0.000 description 9
- 238000013461 design Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 241000145637 Lepturus Species 0.000 description 2
- 241001494479 Pecora Species 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000011324 bead Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
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- 238000005336 cracking Methods 0.000 description 1
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- 230000007547 defect Effects 0.000 description 1
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- 230000001105 regulatory effect Effects 0.000 description 1
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- 230000004044 response Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
- F02C6/20—Adaptations of gas-turbine plants for driving vehicles
- F02C6/203—Adaptations of gas-turbine plants for driving vehicles the vehicles being waterborne vessels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/30—Exhaust heads, chambers, or the like
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Supercharger (AREA)
Abstract
It is a kind of can astern gas turbine power turbine exhaust volute, be related to energy source and power equipment.Existing passageway seals are poor, are easy to be leaked in space locating for power turbine shaft by being vented inner casing, while exhaust apparatus, when bearing the combustion gas of high temperature and pressure, easy temperature distortion is uncoordinated, leads to the damage of exhaust apparatus.This volute includes exhaust case and exhaust inner casing, exhaust case is bent structure, a circular hole is provided on the outer bending side of exhaust case, being vented inner casing includes switching cylinder and connecting cylinder, the inward at both ends concave shape of connecting cylinder circularizes insertion tube, the axis of annular insertion tube is overlapped with the axis of connecting cylinder ontology, one end of connecting cylinder is inserted into one end nozzle of switching cylinder, the other end tube port position of switching cylinder is oppositely arranged and is fixedly connected with the aperture of circular hole, inner can is provided in the support ring of power turbine, one end of inner can is equipped with annular slot, the annular insertion tube of the connecting cylinder other end is plugged into annular slot.The present invention is used for the exhaust of power turbine.
Description
Technical field
The invention belongs to energy source and power equipment Industries, and in particular to a kind of knot of Gas Turbine Power turbine exhaust volute
Structure.
Background technique
Gas turbine is from the date of birth, green by naval, various countries just because power density is big, is swift in response the features such as fast
It looks at, becomes the main dynamics equipment of water surface large size naval vessels.The U.S., Britain and Russia have developed many types of equipment gas turbine one after another
Surface ship, gas turbine design technology becomes better and approaching perfection day by day.China passes through by introducing advanced Vessel personnel technology
Production domesticization research work, substantially increases the technical level of China's Vessel personnel, but gas turbine front line science technology is wanted
Lag behind developed country above-mentioned.As the gas turbine of one of naval's major impetus device, though there are many important advantages, so
And it is still a big defect that it, which cannot directly move backward,.Western countries begin to the research direct backing turbine skill of gas turbine from the seventies
Art, at present Russia's real ship application.Carry out the direct backing turbine technical research work of gas turbine not yet in China.
Can astern gas turbine refer to that gas turbine itself is not necessarily to displacement paddle and direct reversing can be realized, have set sail it is fast,
Reaction time is fast, braking distance is short, acceleration is fast, fall boat property and turning quality is good, it can be achieved that the advantages such as stepless regulated, can significantly mention
Rise the mobility index of ship.It can avoid displacement paddle construction complexity, part dimension is big, weight is big, involves great expense, maintenance difficulty is big
The shortcomings that.Therefore, gas turbine promotion prospect is wide, has important national defence and economic results in society.
Exhaust system is the important auxiliary system of gas turbine, is had a significant impact to gas turbine proficiency and normal work.
Its major function is that pressure at expulsion is maintained to ensure gas turbine proficiency；Closed combustion gas simultaneously guides exhaust to move towards；By high-temperature spiral
Shape tail gas carries out dilatation decompression and water conservancy diversion is the turbulent gas for having certain rule；Reduce energy loss；Control the discharge speed of combustion gas
Degree makes combustion engine discharge meet ship emission request.
Existing turbine exhaust system unreasonable structural design leads to exhaust system since resonance or intensity not enough fail
System generate big displacement, gas turbine combustion gas can not it is unobstructed discharge and influence gas turbine normal work, to reduce combustion gas wheel
Engine efficiency even results in turbine engine failure；And in recent years, gas turbine is required high-power and high efficiency, turbine inlet
Fuel gas temperature becomes higher and higher, and to the design of exhaust system, more stringent requirements are proposed.
Summary of the invention
The technical problem to be solved in the invention is: passageway seals are poor, are easy to be leaked to by exhaust inner casing dynamic
In space locating for power turbine wheel shaft, while exhaust apparatus, when bearing the combustion gas of high temperature and pressure, easy temperature distortion is uncoordinated, leads
Cause the damage of exhaust apparatus, so provide it is a kind of can astern gas turbine power turbine exhaust volute.
The present invention to solve above-mentioned technical problem the technical solution adopted is that: can astern gas turbine power turbine exhaust
Volute includes exhaust case and exhaust inner casing, and exhaust case is bent structure, and exhaust case includes inner bending side and outer
Side is bent, a circular hole is provided on the outer bending side of exhaust case, exhaust inner casing is cylindrical tube, and the one end for being vented inner casing passes through
Circular hole is fixedly connected with exhaust case, and the axis for being vented inner casing is overlapped with the axis of volute inlet；The exhaust inner casing
Including switching cylinder and connecting cylinder, the inward at both ends concave shape of connecting cylinder circularizes insertion tube, and the internal diameter of annular insertion tube is less than connecting cylinder
The internal diameter of ontology, and the axis of annular insertion tube is overlapped with the axis of connecting cylinder ontology, one end of connecting cylinder is inserted into the one of switching cylinder
It holds in nozzle, the other end tube port position of switching cylinder is oppositely arranged and is fixedly connected with the aperture of circular hole, the support ring of power turbine
It is inside provided with inner can, one end of inner can is equipped with annular slot, and the annular insertion tube of the connecting cylinder other end is plugged into annular slot
It is interior.
Further, one end tube port position of the switching cylinder is radially uniform is provided with multiple bolts hole, the connecting cylinder
One end tube port position it is radially uniform be provided with multiple bolts hole, and the bolt hole in switching cylinder and the number of bolt hole phase on connecting cylinder
It is oppositely arranged together and one by one, switching cylinder is bolted to connection with connecting cylinder.
Further, the exhaust case is bent structure, and exhaust case includes conically shaped, group section cylinder and mistake
A section cylinder is crossed, the air inlet of conically shaped is fixedly connected with the gas outlet of group section cylinder, the air inlet of group section cylinder and transition
The gas outlet of section cylinder is fixedly connected.
Further, the air inlet of the transition section cylinder is provided with ring flange, transition section cylinder and power turbine branch
Pushing out ring passes through flanged joint.
Further, the conically shaped is more prismatic cone cylinders, and the air inlet of conically shaped is quadrangle, the outlet of conically shaped
Mouth is circle, and the air inlet section of conically shaped is greater than the outlet section of conically shaped, and the gas outlet of the group section cylinder is four
The air inlet of side shape, group section cylinder is circle, and plane locating for group section cylinder gas outlet is vertical with plane locating for air inlet
Setting, group section cylinder is welded by muti-piece plate body, and the transition section cylinder is truncated cone-shaped cylinder, the internal diameter of air inlet
Less than the internal diameter of gas outlet.
Further, the gas outlet of the conically shaped is provided with ring flange.
Further, the junction between the conically shaped and group section cylinder is welded with the first reinforcing rib, group section
Junction between cylinder and transition section cylinder is welded with the second reinforcing rib, the junction of the muti-piece plate body of group section cylinder ontology
It is welded with third reinforcing rib.
Further, the 4th reinforcing rib, the centre of the 4th reinforcing rib are provided on the outer surface of the exhaust case
Part outwardly convex simultaneously forms closed chamber between the outer surface of exhaust case, is also drilled on the outer surface of exhaust case multiple
Air hole, air hole are oppositely arranged with closed chamber, and closed chamber is connected to by air hole with blast tube.
Further, the outer surface of the switching cylinder and exhaust case is respectively arranged with insulating layer.
Further, the insulating layer includes aluminium silicate wool needle punched blanket and resurrection glass fibre set, aluminium silicate wool needle
Thorn blanket is placed in resurrection glass fibre set, and the running-on of resurrection glass fibre set is closed by alkali-free glass fibre linear slit.
The beneficial effects of the present invention are:
1, exhaust volute design meets power turbine shaft and stretches out and subsequent load from centre at the structure of intermediate hollow
Connect the condition of acting.
2, the present invention is designed to the structure of bending, and combustion gas outflow direction can be made to change 90 degree of directions, be conducive to turbine wheel shaft
The load of rear end is connected after stretching out from exhaust volute.
3, exhaust inner casing is divided into two parts by the present invention, and being designed between each other being slidably connected with respect to thin tail sheep；
It is vented by plug-in connection structure between inner casing and inner can, the both Packed effects of this structure prevent combustion gas from being leaked to
Inside, power turbine shaft are in normal working environment, while when bearing the combustion gas of high temperature and pressure, can be to thermal expansion
Swell increment compensates, and plays the role of compatibility of deformation.
4, insulating layer of the present invention uses aluminium silicate wool needle punched blanket material, and surface is coated using high silica glass cloth, side
Edge is sutured using alkali-free glass fibre line；Light-weight, high temperature resistant, thermal stability is good, and adiabatic temperature is at 1050 DEG C -14500
DEG C, heat insulation is higher than other heat-barrier materials, and low in cost, reduces production cost.
5, the present invention uses reinforcing rib structure, and original form, and volute itself can be kept under high-temperature high-pressure state
The intensity of structure can be adjusted according to the size of pressure；In the outer surface of exhaust case using Π type structural bead, and
It is drilled with circular hole on the barrel of Π type structural bead connection, the intensity of structure had not only been can increase in this way but also Π type structure and cylinder can be played
Thermal deformation having the same between wall, avoids reinforcing rib and barrel from being easily damaged due to deformation.
Detailed description of the invention
Fig. 1 is the cross-sectional view for being vented volute；
Fig. 2 is the main view for being vented volute；
Fig. 3 is the structural schematic diagram for being vented volute and being used in combination with turbine wheel shaft；
Fig. 4 is the perspective view for being vented volute；
Fig. 5 is the partial enlarged view of the 4th reinforcing rib in Fig. 1；
Fig. 6 is the partial enlarged view of switching cylinder and connecting cylinder grafting in Fig. 3；
Fig. 7 is the exhaust coated figure of volute thermal insulation layer；
Fig. 8 is the cross-sectional view of connecting cylinder.
Specific embodiment
To further illustrate the technical scheme of the present invention below with reference to the accompanying drawings and specific embodiments:
Specific embodiment 1: as shown in figure 3, described in present embodiment can astern gas turbine power turbine exhaust
Volute includes exhaust case 1 and exhaust inner casing 2, and exhaust case 1 is bent structure, and exhaust case 1 includes inner bending side
10 and outer bending side 11, it is provided with a circular hole on the outer bending side 11 of exhaust case 1, exhaust inner casing 2 is cylindrical tube, in exhaust
One end of shell 2 is fixedly connected by circular hole with exhaust case 1, and the axis for being vented inner casing 2 is overlapped with the axis of volute inlet；
Airflow path is formed between the inner surface of exhaust case 1 and the outer surface for being vented inner casing 2；
As shown in Fig. 1, Fig. 3, Fig. 7 and Fig. 8, the exhaust inner casing 2 includes switching cylinder 2-1 and connecting cylinder 2-2, connecting cylinder
The inward at both ends concave shape of 2-2 circularizes insertion tube 2-2-1, and the internal diameter of annular insertion tube 2-2-1 is less than the interior of connecting cylinder 2-2 ontology
Diameter, and the axis of annular insertion tube 2-2-1 is overlapped with the axis of connecting cylinder 2-2 ontology, one end of connecting cylinder 2-2 is inserted into switching cylinder 2-
In 1 one end nozzle, the other end tube port position of switching cylinder 2-1 and the aperture of circular hole are oppositely arranged and weld together,
As shown in Figure 3 and Figure 6, the support ring 8 of power turbine is fixedly connected with the air inlet of exhaust volute, in support ring 8
It is provided with inner can 7, one end of inner can 7 is equipped with annular slot 7-1, the annular insertion tube 2-2-1 grafting of the connecting cylinder 2-2 other end
Into annular slot 7-1.
Exhaust inner casing and exhaust case form closed blast tube, and being vented inner housing inner is hollow structure, power whirlpool
Wheel shaft is passed through from centre, meets power turbine shaft from the intermediate condition stretched out with subsequent load connection acting；It is vented inner casing
It is divided into two parts, and is designed to slideable connection between each other；It is vented between the front end and inner can of inner casing and is connected by inserting formula
Binding structure, this structure have Packed effect, and the combustion gas sealed up in exhaust volute is allowed to that exhaust inner casing cannot be leaked to
Inside, be in power turbine shaft in normal working environment, while being vented inner casing to bear the high temperature in blast tube high
When the combustion gas of pressure, compatibility of deformation can be played the role of, and have good leakproofness.
Specific embodiment 2: as shown in Figure 1, one end tube port position of switching cylinder 2-1 described in present embodiment is radially equal
Even to be provided with multiple bolts hole, one end tube port position of the connecting cylinder 2-2 is radially uniform to be provided with multiple bolts hole, and switching cylinder 2-
Bolt hole on 1 is identical as the number of bolt hole on connecting cylinder 2-2 and is oppositely arranged one by one, and switching cylinder 2-1 and connecting cylinder 2-2 are logical
It crosses bolt to be fixedly connected, and the aperture of bolt hole is greater than the diameter of screw in bolt.
Connecting cylinder is bolted with switching cylinder diameter, and connecting cylinder and switching cylinder is prevented to be detached from vibration processes, and
The aperture of bolt hole is greater than the diameter of screw in bolt, has small gap, connecting cylinder and switching cylinder between bolt and hole cooperation
Between generate being slidably connected for opposite thin tail sheep, for offsetting the elongation of thermal expansion.
Other compositions and connection type are same as the specific embodiment one.
Specific embodiment 3: as shown in Figure 1 and Figure 4, exhaust case 1 described in present embodiment is bent structure,
Exhaust case 1 includes conically shaped 1-1, group section cylinder 1-2 and transition section cylinder 1-3, the air inlet and group section of conically shaped 1-1
The gas outlet of cylinder 1-2 welds together, and the gas outlet of the air inlet and transition section cylinder 1-3 of group section cylinder 1-2 is welded on
Together.
Turbine exhaust volute design can make combustion gas outflow direction change 90 degree of directions, be conducive to whirlpool at the structure of bending
Wheel shaft connects the load of rear end after stretching out from exhaust volute.
Other compositions and connection type are the same as one or two specific embodiments.
Specific embodiment 4: as shown in Figure 1, the air inlet of transition section cylinder 1-3 described in present embodiment is provided with
The support ring 8 of ring flange 1-3-1, transition section cylinder 1-3 and power turbine passes through flanged joint.
Other compositions and connection type are the same as the specific implementation mode 3.
Specific embodiment 5: as shown in Figure 1 and Figure 4, conically shaped 1-1 described in present embodiment is more prismatic cone cylinders,
The air inlet of conically shaped 1-1 is quadrangle, and the gas outlet of conically shaped 1-1 is circle, and the air inlet section of conically shaped 1-1 is greater than cone
The outlet section of shape cylinder 1-1,
The gas outlet of the group section cylinder 1-2 is quadrangle, and the air inlet of group section cylinder 1-2 is circle, and is turned
It connects plane locating for section gas outlet cylinder 1-2 to be vertically arranged with plane locating for air inlet, group section cylinder 1-2 is welded by muti-piece plate body
It connects,
The transition section cylinder 1-3 is truncated cone-shaped cylinder, and the internal diameter of air inlet is less than the internal diameter of gas outlet.
The gas outlet of exhaust volute is designed to tapered circular configuration, and such structure can make exhaust velocity faster, have
Conducive to the quick device for transferring of gas, good exhaust effect.
Other compositions and connection type are identical as specific embodiment three or four.
Specific embodiment 6: the gas outlet of conically shaped 1-1 described in present embodiment is provided with ring flange.
Other compositions and connection type are identical as specific embodiment four or five.
Specific embodiment 7: as shown in Figure 1, between conically shaped 1-1 described in present embodiment and group section cylinder 1-2
Junction be welded with the first reinforcing rib 3, the junction between group section cylinder 1-2 and transition section cylinder 1-3 is welded with second
The junction of reinforcing rib 5, the muti-piece plate body of group section cylinder 1-2 ontology is welded with third reinforcing rib.
By the way that reinforcing rib is arranged, the intensity of structure can be enhanced, meet the condition of high temperature and pressure.
Other compositions and connection type are identical as specific embodiment four or five.
Specific embodiment 8: shown in as shown in Figure 1, Figure 2, Fig. 5 and Fig. 7, the appearance of exhaust case 1 described in present embodiment
Be provided with the 4th reinforcing rib 6 on face, the middle section outwardly convex of the 4th reinforcing rib 6 and with the outer surface of exhaust case 1 it
Between form closed chamber 4, be also drilled with multiple air hole 1-1-1, air hole 1-1-1 and closing chamber on the outer surface of exhaust case 1
Room 4 is oppositely arranged, and closed chamber 4 is connected to by air hole 1-1-1 with blast tube.
More 4th reinforcing ribs 6, more 4th reinforcements are circumferentially welded on the outer surface of the conically shaped 1-1
Muscle 6 is in same level and joins end to end to form the ring body of prismatic more than one；The strong of conically shaped 1-1 can be enhanced in this way
Degree.
It is welded with more 4th reinforcing ribs 6 on the outer surface of the front end group section cylinder 1-2 side by side, described more
4th reinforcing rib 6 is vertically arranged on the outer surface of group section cylinder 1-2；
More 4th reinforcing ribs 6 are circumferentially welded on the outer surface of the transition section cylinder 1-3,
4th reinforcing rib 6 be Π type reinforcing rib, be vented volute most of material be all plate assembly welding and
At due to bearing the combustion gas of high temperature and pressure, the intensity of plate is unable to satisfy requirement, therefore spreads in the outer surface of exhaust case
If Π type reinforcing rib, due to the effect of high temperature and pressure, cracking is easy after the welding of Π type reinforcing rib, therefore weld in Π type reinforcing rib
Connection is carried out with blast tube surface drilling inside closed chamber after connecing, the intensity of structure had not only been can increase in this way but also Π can be played
Thermal deformation having the same between type structure and barrel.
Other compositions and connection type are identical as specific embodiment four or five.
Specific embodiment 9: as shown in fig. 7, the outer surface of switching cylinder 2-1 and exhaust case 1 described in present embodiment
Outer surface be respectively arranged with insulating layer 9.
Described in present embodiment can reverse power turbine exhaust volute at work, since internal fuel gas temperature is high,
So that the hull-skin temperature of exhaust apparatus is equally very high, excessively high temperature has potential danger to the article of staff and surrounding
Danger, thus can reverse power turbine exhaust system outer surface be thermally shielded it is coated.
Other compositions and connection type are same as the specific embodiment one.
Specific embodiment 10: insulating layer 9 described in present embodiment includes aluminium silicate wool needle punched blanket and vagcor
Fibre sleeving, aluminium silicate wool needle punched blanket are placed in resurrection glass fibre set, and the running-on of resurrection glass fibre set is by alkali-free glass
Fiber line suture.
Thermal insulation material uses aluminium silicate wool needle punched blanket material, and heat insulation material surface is coated using high silica glass cloth,
Edge is sutured using alkali-free glass fibre line.Light-weight, high temperature resistant, thermal stability is good, and adiabatic temperature is at 1050 DEG C -1450
DEG C, heat insulation is higher than other heat-barrier materials, and low in cost, reduces production cost.
Other compositions and connection type are identical as specific embodiment nine.
Claims (10)
1. one kind can astern gas turbine power turbine exhaust volute, including exhaust case (1) and exhaust inner casing (2), exhaust
Shell (1) is bent structure, and exhaust case (1) includes inner bending side (10) and outer bending side (11), exhaust case (1)
Outer bending side (11) on be provided with a circular hole, exhaust inner casing (2) is cylindrical tube, and one end of exhaust inner casing (2) passes through circular hole
It is fixedly connected with exhaust case (1), and the axis for being vented inner casing (2) is overlapped with the axis of volute inlet；
It is characterized by: the exhaust inner casing (2) includes switching cylinder (2-1) and connecting cylinder (2-2), the two of connecting cylinder (2-2)
End is recessed inwardly to be formed annular insertion tube (2-2-1), and the internal diameter of annular insertion tube (2-2-1) is less than the internal diameter of connecting cylinder (2-2) ontology,
And the axis of annular insertion tube (2-2-1) is overlapped with the axis of connecting cylinder (2-2) ontology, one end of connecting cylinder (2-2) is inserted into switching
In one end nozzle of cylinder (2-1), the other end tube port position of switching cylinder (2-1) is oppositely arranged and is fixedly connected with the aperture of circular hole,
It is provided with inner can (7) in the support ring (8) of power turbine, one end of inner can (7) is equipped with annular slot (7-1), even
The annular insertion tube (2-2-1) of connect cylinder (2-2) other end is plugged into annular slot (7-1).
2. one kind according to claim 1 can astern gas turbine power turbine exhaust volute, it is characterised in that: it is described
One end tube port position of switching cylinder (2-1) radially uniform be provided with multiple bolts hole, one end tube port position of the connecting cylinder (2-2)
It is radially uniform to be provided with multiple bolts hole, and the bolt hole in switching cylinder (2-1) is identical as the number of bolt hole on connecting cylinder (2-2)
And be oppositely arranged one by one, switching cylinder (2-1) is bolted to connection with connecting cylinder (2-2), and the aperture of bolt hole is greater than spiral shell
The diameter of screw rod in bolt.
3. one kind according to claim 1 can astern gas turbine power turbine exhaust volute, it is characterised in that: it is described
Exhaust case (1) include conically shaped (1-1), group section cylinder (1-2) and transition section cylinder (1-3), conically shaped (1-1) into
Port is fixedly connected with the gas outlet of group section cylinder (1-2), the air inlet and transition section cylinder (1- of group section cylinder (1-2)
3) gas outlet is fixedly connected.
4. one kind according to claim 3 can astern gas turbine power turbine exhaust volute, it is characterised in that: it is described
The air inlet of transition section cylinder (1-3) be provided with ring flange (1-3-1), the support of transition section cylinder (1-3) and power turbine
Ring (8) passes through flanged joint.
5. one kind according to claim 4 can astern gas turbine power turbine exhaust volute, it is characterised in that: it is described
Conically shaped (1-1) be more prismatic cone cylinders, the air inlet of conically shaped (1-1) is quadrangle, and the gas outlet of conically shaped (1-1) is circle
Shape, and the air inlet section of conically shaped (1-1) is greater than the outlet section of conically shaped (1-1),
The gas outlet of the group section cylinder (1-2) is quadrangle, and the air inlet of group section cylinder (1-2) is circle, and is turned
It connects plane locating for the gas outlet a section cylinder (1-2) to be vertically arranged with plane locating for air inlet, group section cylinder (1-2) is by plurality of plates
Body is welded,
The transition section cylinder (1-3) is truncated cone-shaped cylinder, and the internal diameter of air inlet is less than the internal diameter of gas outlet.
6. one kind according to claim 5 can astern gas turbine power turbine exhaust volute, it is characterised in that: it is described
The gas outlet of conically shaped (1-1) be provided with ring flange.
7. one kind according to claim 5 can astern gas turbine power turbine exhaust volute, it is characterised in that: it is described
Conically shaped (1-1) and group section cylinder (1-2) between junction be welded with the first reinforcing rib (3), group section cylinder (1-2)
Junction between transition section cylinder (1-3) is welded with the second reinforcing rib (5), the plurality of plates of group section cylinder (1-2) ontology
The junction of body is welded with third reinforcing rib.
8. according to one kind described in any one of claim 3 to 7 claim can astern gas turbine power turbine exhaust whirlpool
Shell, it is characterised in that: the 4th reinforcing rib (6) is provided on the outer surface of the exhaust case (1), the 4th reinforcing rib (6)
Middle section outwardly convex simultaneously forms closed chamber (4) between the outer surface of exhaust case (1), the appearance of exhaust case (1)
It is also drilled on face multiple air holes (1-1-1), air hole (1-1-1) is oppositely arranged with closed chamber (4), and closed chamber (4) is logical
Air hole (1-1-1) is crossed to be connected to blast tube.
9. one kind according to claim 1 can astern gas turbine power turbine exhaust volute, it is characterised in that: it is described
The outer surface of switching cylinder (2-1) and the outer surface of exhaust case (1) be respectively arranged with insulating layer (9).
10. one kind according to claim 9 can astern gas turbine power turbine exhaust volute, it is characterised in that: institute
The insulating layer (9) stated includes aluminium silicate wool needle punched blanket and resurrection glass fibre set, and aluminium silicate wool needle punched blanket is placed in high silicon oxygen glass
In glass fibre sleeving, the running-on of resurrection glass fibre set is closed by alkali-free glass fibre linear slit.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114103634A (en) * | 2021-12-17 | 2022-03-01 | 岭南师范学院 | Device and method for assisting vehicle in backing by engine waste gas |
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| CN109578141B (en) | 2023-10-20 |
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