CN108005727A - A kind of highway turbine machine suitable for high temperature high back pressure dry gas sealing structure - Google Patents
A kind of highway turbine machine suitable for high temperature high back pressure dry gas sealing structure Download PDFInfo
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- CN108005727A CN108005727A CN201610951387.8A CN201610951387A CN108005727A CN 108005727 A CN108005727 A CN 108005727A CN 201610951387 A CN201610951387 A CN 201610951387A CN 108005727 A CN108005727 A CN 108005727A
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Classifications
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- 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
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/02—Blade-carrying members, e.g. rotors
-
- 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
- F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
- F01D11/003—Preventing or minimising internal leakage of working-fluid, e.g. between stages by packing rings; Mechanical seals
-
- 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
- F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
- F01D11/02—Preventing or minimising internal leakage of working-fluid, e.g. between stages by non-contact sealings, e.g. of labyrinth type
- F01D11/04—Preventing or minimising internal leakage of working-fluid, e.g. between stages by non-contact sealings, e.g. of labyrinth type using sealing fluid, e.g. steam
-
- 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
- F01D25/08—Cooling; Heating; Heat-insulation
- F01D25/12—Cooling
-
- 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
- F01D25/08—Cooling; Heating; Heat-insulation
- F01D25/12—Cooling
- F01D25/125—Cooling of bearings
-
- 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
- F01D25/16—Arrangement of bearings; Supporting or mounting bearings in casings
-
- 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
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/02—Blade-carrying members, e.g. rotors
- F01D5/06—Rotors for more than one axial stage, e.g. of drum or multiple disc type; Details thereof, e.g. shafts, shaft connections
-
- 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
- F01D9/00—Stators
- F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Mechanical Sealing (AREA)
Abstract
The invention belongs to turbine technology field, and in particular to a kind of highway turbine machine suitable for high temperature high back pressure dry gas sealing structure.The present invention includes turbine wheel shaft module 1, dry gas seals component 2, mechanical dynamic seal component 3, housing unit 4, cooling jacket component 5；Turbine wheel shaft module 1 passes through and inside housing unit 4, dry gas seals component 2 is located at the inside of housing unit 4 and is connected with turbine wheel shaft module 1, cooling jacket component 5 is installed on outside housing unit 4, and mechanical dynamic seal component 3 is installed on the inside of housing unit 4 and is connected with shafting component 1.The present invention can complete conversion of the hot fluids to ultrahigh speed mechanical shaft power under the effect of special working medium.
Description
Technical field
The invention belongs to turbine technology field, and in particular to a kind of suitable for the super of high temperature high back pressure dry gas sealing structure
High speed turbine.
Background technology
Existing small turbomachine is substantially relatively simple nonadjustable all there are output power under specific bleed pressure operating mode
Situation；And for dynamic sealing mainly based on contact type mechanical dynamic sealing, such a sealing structure turbine is difficult to be applicable in structure design
In the operating mode of high temperature high back pressure working medium, or under the effect of high temperature and pressure working medium, dynamic sealing wearability is relatively low, is easy to cause dynamic sealing
Failure；Meanwhile turbine, during high temperature refrigerant and long-term work, heat caused by bearing operation is not easy to distribute and cause
Shafting job stability and reliability decrease；And in shafting structure, bearing is mostly using positioning pretension or elastic wave ring type
Level pressure pretension, for elastic wave load non-linear strong, value of elastic changes greatly unstable situation；Designed based on existing background technology
It has developed the highway turbine machine suitable for high temperature high back pressure dry gas sealing structure.
The content of the invention
Present invention solves the technical problem that：In view of the deficiencies of the prior art, present invention offer one kind is suitable for high temperature highback
The highway turbine machine of air-tight structure is pressed dry, hot fluids can be completed to ultrahigh speed under the effect of high temperature high back pressure working medium
The conversion of mechanical shaft power.
The technical solution adopted by the present invention：
A kind of highway turbine machine suitable for high temperature high back pressure dry gas sealing structure, including turbine wheel shaft module, dry gas
Seal assembly, mechanical dynamic seal component, housing unit, cooling jacket component；Turbine wheel shaft module passes through and is installed on housing group
Inside part, dry gas seals component is located inside housing unit and is connected with turbine wheel shaft module, cooling jacket component location and installation
Outside housing unit, mechanical dynamic seal component is installed on inside housing unit and is connected with turbine wheel shaft module.
The turbine wheel shaft module include monoblock type turbine rotor, helicla flute rotating ring, axle sleeve, rolling bearing, rolling bearing,
Moving sealing ring, abutment sleeve, clamp nut；
Helicla flute moving ring sleeve is pressed on the turbine disk of monoblock type turbine rotor on the axis of monoblock type turbine rotor,
O-ring seal is equipped between the turbine disk of helicla flute rotating ring and monoblock type turbine rotor；Axle sleeve presses helicla flute rotating ring；The axis of rolling
On bearing sleeve axis, and contacted with axle sleeve；Rolling bearing is sleeved on axis, and spacing by ladder；Moving sealing ring is sleeved on axis and compresses
Rolling bearing, is equipped with O-ring seal between moving sealing ring and axis；Abutment sleeve is sleeved on axis and compresses moving sealing ring；Clamp nut
It is connected through a screw thread with monoblock type turbine rotor shaft and compresses abutment sleeve.
The dry gas seals component includes dry gas seals housing, circlip, graphite stationary ring, stationary ring baffle ring, compression spring,
O-ring seal, O-ring seal；Circlip is installed in the circlip slot of seal casinghousing, and 8 compression springs are circumferentially equal
Even to be shelved in the spring eye of dry gas seals housing, stationary ring baffle ring is placed on compression spring, and graphite stationary ring is shelved on stationary ring gear
On circle, there are the paired graphite stationary ring of corresponding boss shape, the circumferential position-limiting action of stationary ring baffle ring in dry gas seals casing annular groove；It is close
O-ring seal is provided with the outer wall of capsule body, stationary ring baffle ring is provided with O-ring seal with seal casinghousing contact position.
The graphite stationary ring, stationary ring baffle ring are positioned on the semicircle boss of seal casinghousing by semi-circular recesses, compression
Spring provides axial elastic force to stationary ring baffle ring, graphite stationary ring, ensure during work graphite stationary ring can with it is spiral in shafting component
Groove rotating ring fits closely together, and it is secondary to form dynamic sealing friction.
The mechanical dynamic seal component includes compression spring, O-ring seal, seal casinghousing, guider screw, stationary seat, stone
Black stationary ring；6 compression springs are circumferentially uniformly positioned in seal casinghousing in corresponding spring eye, and stationary seat passes through guider screw
It is connected with seal casinghousing, stationary seat is positioned on the end face of compression spring, and graphite stationary ring is Nian Jie with stationary seat by epoxy resin
Together；Compress spring and axial elastic force is provided graphite stationary ring.
Graphite stationary ring forms another road dynamic sealing friction pair with the moving sealing ring in shafting component.
The housing unit include turbine shroud, turbine lid, nozzle of air supply, preloading spring, end ring, current limliting screw,
Adapter, adapter, adapter, plug, plug, plug, plug, O-ring seal, O-ring seal；Turbine lid is convex by its
Platform is positioned with the groove on turbine shroud；Nozzle of air supply is equipped with nozzle and location hole, nozzle of air supply, and passes through location hole
Positioning is connected with turbine shroud with shop bolt, it is compressed by turbine lid, by adjusting positioning different on nozzle of air supply
Hole is positioned with turbine shroud；Compression spring is held in turbine shroud, and end ring is positioned on preloading spring end face, in advance
Tight spring forms the elastic force to end ring to the left；There is boss to carry out to right limit end ring on turbine shroud at the same time；Respectively
Adapter, plug and turbine shroud connection have sealing copper packing to carry out static seal.
By inlet suction port air inlet, gas enthalpy drop is completed to the conversion of kinetic energy by nozzle of air supply top nozzle to drive whirlpool
Wheel rotation, completes to be vented by exhaust joint.
Can be rolling bearing in turbine, rolling bearing and the secondary offer lubrication of dynamic sealing friction by adapter.
Sealing dry gas can also be provided for dry gas seals component by adapter.
The cooling jacket component include cooling jacket, oil-discharging joint, O-ring seal, O-ring seal, O-ring seal,
Seal copper packing, into drainage joint；Cooling jacket is sleeved on the outer ring of turbine shroud by its inner circle, and cooling jacket inner surface is provided with
Axial and circumferential cooling water flow conduits, and the lower cylindrical section of the oil-discharging joint by being tightened on cooling jacket is formed and turbine case
The positioning of body；Oil-discharging joint plays the effect of turbine shroud inner bearing chamber outage at the same time；Cooling jacket is screwed into drainage joint
On, by the way that into drainage joint cooling water and draining can be completed to cooling jacket, form the cooling heat dissipation to housing unit.
The shafting component coordinates the effect of housing unit to form the turbine shafting of a set of steady running, pacifies in housing unit
There is corresponding boss to carry out the left side outer ring of rolling bearing at dress position of bearings spacing, moved by spacing guarantee part helicla flute
Ring, axle sleeve are stably assemblied in unitary rotor；End ring in housing unit carries out the right side outer ring of rolling bearing
Spacing, the preloading spring in housing unit compresses end ring, forms the pretightning force to the left to housing washer.
Beneficial effects of the present invention：
(1) a kind of highway turbine machine suitable for high temperature high back pressure dry gas sealing structure provided by the invention, Neng Goutong
Cross and circumferencial direction rotational positioning is carried out to nozzle of air supply in the invention, directly adjust nozzle of air supply quantity in work, and then adjust
Turbine rotor air inflow and output power under specific source of the gas operating mode, realize that a turbine is being changed without the situation of any part
Under, in the range of relatively high power, meet different capacity demand；
(2) a kind of highway turbine machine suitable for high temperature high back pressure dry gas sealing structure provided by the invention, sealing knot
Structure uses contactless dry gas seals, and by turbine cylinder and seal casinghousing region of interest fluting and runner, introducing outer
Portion's cryogen working medium cools down sealing friction pair position, improves friction subtask environment, improves high temperature and pressure ring
The wearability and reliability of turbine seal under border；
(3) a kind of highway turbine machine suitable for high temperature high back pressure dry gas sealing structure provided by the invention, by
Turbine bearing(s) chamber enclosure body sets cooling-water duct, cooling water is introduced in the course of work cooling is carried out to bearing bore shell body and dissipate
Heat, thus reduces bearing operating temperatures, improves bearing working environment, improves turbine rotor reliability；
(4) a kind of highway turbine machine suitable for high temperature high back pressure dry gas sealing structure provided by the invention, using one
Compressing spring replaces elastic wave circle to carry out level pressure pretension to bearing, has relatively stable value of elastic.
Brief description of the drawings
Fig. 1 is turbine structure sectional view provided by the invention；
Fig. 2 is turbine left view provided by the invention；
Fig. 3 is turbine wheel shaft module structure diagram；
Fig. 4 is dry gas seals component structure diagram；
Fig. 5 is mechanical dynamic seal component structure diagram；
Fig. 6 is housing unit vertical section structure diagram；
Fig. 7 is housing unit horizontal profile structure schematic diagram；
Fig. 8 is nozzle of air supply structure diagram；
Fig. 9 is cooling jacket component vertical section structure diagram；
Figure 10 is cooling jacket component level cross-sectional view；
Figure 11 is spiral groove seal movable ring structure schematic diagram；
Figure 12 is dry gas seals housing right view；
Figure 13 is graphite stationary ring structure right view；
Figure 14 is stationary ring baffle ring structure right view；
Figure 15 is static components organization plan figure；
Figure 16 is nozzle of air supply cross-section structure conceptual scheme；
Figure 17 is lubricating oil flow channel design schematic diagram；
Figure 18 is dry gas seals gas-supplying structure schematic diagram；
Figure 19 is cooling water circulation structure diagram；
Figure 20 is turbine intake and exhaust structure diagram；
In figure：1- turbine wheel shafts module, 2- dry gas seals component, 3- mechanical dynamic seals component, 4- housing units, 5- coolings
Water jacket assembly, 6- monoblock types turbine rotor, 7- helicla flutes rotating ring, 8- axle sleeves, 9- rolling bearings one, 10- rolling bearings two, 11-
Moving sealing ring, 12- abutment sleeves, 13- clamp nuts, 14-O types sealing ring one, 15-O types sealing ring two, 16- dry gas seals housing,
17- circlips, 18- graphite stationary rings, 19- stationary rings baffle ring, 20- compressions spring, 21-O types sealing ring three, 22-O type sealing rings
4th, 23- seal casinghousings, 24- guider screws, 25- stationary seats, 26- graphite stationary rings, 27- turbine shrouds, 28- turbines lid, 29- into
Gas jets, 30- preloading springs, 31- end rings, 32-O types sealing ring, 33-O types sealing ring, 34- sealing copper packing, 35- plugs,
36- sealings copper packing, 37- adapters, 38- sealings copper packing, 39- plugs, 40- sealings copper packing, 41- adapters, 42- adapters, 43-
Plug, 44- sealings copper packing, 45- sealings copper packing, 46- plugs, 47- nozzles, 48- location holes, 49- current limlitings screw, 50- sealing copper
Pad, 51- cooling jackets, 52- oil-discharging joints, 53-O types sealing ring, 54-O types sealing ring, 55-O types sealing ring, 56- sealing copper
Pad, 57- are into drainage joint.
Embodiment
High temperature high back pressure dry gas seals knot is suitable for one kind provided by the invention with specific embodiment below in conjunction with the accompanying drawings
The highway turbine machine of structure is described in further detail.
As depicted in figs. 1 and 2, a kind of ultrahigh speed whirlpool suitable for high temperature high back pressure dry gas sealing structure provided by the invention
Turbine, including turbine wheel shaft module 1, dry gas seals component 2, mechanical dynamic seal component 3, housing unit 4, cooling jacket component 5；
Turbine wheel shaft module 1 passes through and inside housing unit 4, and dry gas seals component 2 is located at the inside of housing unit 4 and and turbine
Shafting component 1 connects, and outside 5 location and installation housing unit 1 of cooling jacket component, mechanical dynamic seal component 3 is installed on housing group
Inside part 4, and it is connected with shafting component 1.
As shown in figure 3, turbine wheel shaft module 1 includes monoblock type turbine rotor 6, helicla flute rotating ring 7, axle sleeve 8, rolling bearing
One 9, rolling bearing 2 10, moving sealing ring 11, abutment sleeve 12, clamp nut 13, O-ring seal 1, O-ring seal 2 15；
Helicla flute rotating ring 7 is sleeved on the 5th section of axis of monoblock type turbine rotor 6, and is pressed on the turbine disk of monoblock type turbine rotor 6,
O-ring seal 1 is equipped between the turbine disk of helicla flute rotating ring 7 and monoblock type turbine rotor 6；Axle sleeve 8 presses helicla flute rotating ring
7 and spacing by the ladder of the 5th section of axis；Rolling bearing 1 is sleeved on the 4th section of axis, and is contacted with axle sleeve 8；Rolling bearing two
10 are sleeved on the 3rd section of axis, and spacing by the ladder of the 3rd section of axis；Moving sealing ring 11 is sleeved on second segment axis and compresses rolling
Bearing 10, is equipped with O-ring seal 2 15 between moving sealing ring 11 and second segment axis；Abutment sleeve 12 is sleeved on second segment axis and presses
Tightening seal rotating ring 11；Clamp nut 13 is connected through a screw thread with 6 second segment axis of monoblock type turbine rotor and compresses abutment sleeve 12；It is logical
Cross and tighten clamp nut 13 and compress abutment sleeve 12 successively, shaft component 1 is formed to the right after moving sealing ring 11 and rolling bearing 10
That moves is spacing；And then by tightening the reaction force of clamp nut 13, after pulling monoblock type turbine rotor 6 to the left, then shape successively
Compression into rotor disk to helicla flute rotating ring 7, axle sleeve 8 and rolling bearing 9, ultimately forms shaft component 1 to left movement
It is spacing；O-ring seal 14, O-ring seal 15 play two rotating rings auxiliary static seal.
As shown in figure 4, dry gas seals component 2 includes dry gas seals housing 16, circlip 17, graphite stationary ring 18, stationary ring
Baffle ring 19, compression spring 20, O-ring seal 3 21, O-ring seal 4 22；Circlip 17 is installed on the bullet of seal casinghousing 16
Property circlip groove in, 8 compression springs 20 be circumferentially uniformly shelved in the spring eye of dry gas seals housing 16, stationary ring baffle ring 19 is put
Put on compression spring 20, graphite stationary ring 18 is shelved on stationary ring baffle ring 19, and it is axial that 17 graphite stationary ring 18 of circlip plays limitation
Migration, there is the paired graphite stationary ring 18 of corresponding boss shape, the circumferential direction of stationary ring baffle ring 19 in 16 annular groove of dry gas seals housing
Position-limiting action；Graphite stationary ring 18, stationary ring baffle ring 19 are positioned on the semicircle boss of seal casinghousing 16 by semi-circular recesses, pressure
Contracting spring 20 provides stationary ring baffle ring 19, graphite stationary ring 18 axial elastic force, ensures that graphite stationary ring 18 can be with shafting group during work
Helicla flute rotating ring 7 in part 1 fits closely together, and it is secondary to form dynamic sealing friction；It is provided with the outer wall of seal casinghousing 16 O-shaped close
Seal 3 21, stationary ring baffle ring 19 and 16 contact position of seal casinghousing are provided with O-ring seal 4 22, O-ring seal 3 21 and O-shaped close
Play auxiliary static seal in 4 22 pairs of each composition surfaces of seal.
As shown in figure 5, mechanical dynamic seal component 3 includes compression spring 20, O-ring seal 14, seal casinghousing 23, guiding spiral shell
Nail 24, stationary seat 25, graphite stationary ring 26；6 compression springs 20 are circumferentially uniformly positioned over corresponding spring in seal casinghousing 23
In hole, stationary seat 25 is connected by guider screw 24 with seal casinghousing 23, and stationary seat 25 is positioned on the end face of compression spring 20,
Graphite stationary ring 26 is bonded together by epoxy resin and stationary seat 25；Graphite stationary ring 26 and the moving sealing ring in shafting component 1
11 form another road dynamic sealing friction pair, and compression spring 20 provides axial elastic force to graphite stationary ring 26.
As shown in Figure 6 and Figure 7, housing unit 4 includes turbine shroud 27, turbine lid 28, nozzle of air supply 29, preloading spring
30th, end ring 31, current limliting screw 49 and sealing copper packing 34, sealing copper packing 36, sealing copper packing 38, sealing copper packing 40, sealing copper
Pad 44, sealing copper packing 45, sealing copper packing 50, adapter 37, adapter 41, adapter 42 are plug 35, plug 39, plug 43, stifled
First 46, O-ring seal 32, O-ring seal 33；Turbine lid 28 is determined by the groove on its convex platform and turbine shroud 27
Position, and be bolted；As shown in figure 8, nozzle of air supply 29 is equipped with nozzle 47 and location hole 48, nozzle of air supply 29, and lead to
Cross location hole 48 and shop bolt and be connected positioning with turbine shroud 27, it is compressed by turbine lid 28, by adjusting into gas blowout
Different location holes 48 is positioned with turbine shroud 27 on mouth 29, and adjustment nozzle of air supply quantity can be realized to turbine；Compression
Spring 30 is held in turbine shroud 27, and end ring 31 is positioned on 30 end face of preloading spring, and preloading spring 30 is formed to axis
Hold the elastic force of baffle ring 31 to the left；There is boss to carry out to right limit end ring 31 on turbine shroud 27 at the same time；Pass through air inlet connecting
First 37 air inlet, completes gas enthalpy drop to the conversion of kinetic energy to drive turbine to rotate by 29 top nozzle 47 of nozzle of air supply, passes through
Exhaust joint 41 completes exhaust；Can be rolling bearing 9,10 and the secondary offer lubrication of dynamic sealing friction in turbine by adapter 42
Cooling；Can also be that dry gas seals component 2 provides sealing dry gas, each adapter, plug and turbine shroud 27 by adapter 42
Connection has sealing copper packing to carry out static seal, and O-ring seal provides each composition surface static seal effect.
As shown in Figure 9 and Figure 10, cooling jacket component 5 includes cooling jacket 51, oil-discharging joint 52, O-ring seal 53, O
Type sealing ring 54, O-ring seal 55, sealing copper packing 56, into drainage joint 57；Cooling jacket 51 is sleeved on turbine case by its inner circle
On the outer ring of body 27,51 inner surface of cooling jacket is provided with axial and circumferential cooling water flow conduits, and by being tightened in cooling jacket 51
On the lower cylindrical section of oil-discharging joint 52 formed and the positioning of turbine shroud 27；Oil-discharging joint 52 plays turbine shroud 27 at the same time
Inner bearing chamber outage acts on.Be screwed into drainage joint 57 on cooling jacket 51, by into drainage joint 57 can to cooling
Water jacket 51 completes cooling water and draining, forms the cooling to housing unit 4 and radiates, all kinds of sealing copper packings and O at adapter
Type sealing ring plays static seal to each composition surface.
Shafting component 1 coordinates the effect of housing unit 4 to form the turbine shafting of a set of steady running, pacifies in housing unit 4
There is corresponding boss to carry out the left side outer ring of rolling bearing 9 at dress position of bearings spacing, pass through spacing guarantee part helicla flute
Rotating ring 7, axle sleeve 8 are stably assemblied in unitary rotor 6；The right side of end ring 31 in housing unit 4 to rolling bearing 10
Side outer ring carries out spacing, and preloading spring 30 in housing unit 4 compresses end ring 31, formed to 10 outer ring of rolling bearing to
Left pretightning force.
The present invention operation principle be：
Shafting component 1 by rolling bearing 9,10 location and installations in housing unit 4, preloading spring 30 in housing unit 4
Formed and the pretension of rolling bearing 9,10 is acted on, dry gas seals component 2 passes through the screw hole on seal casinghousing 16 and housing unit 4
Middle 27 right side of turbine shroud is mutually fixedly connected, and mechanical dynamic seal component 3 passes through 23 upper bolt aperture of seal casinghousing and housing unit 4
Middle 27 left side of turbine shroud is mutually fixedly connected, and cooling jacket component 5 passes through outside 51 inner hole surface of cooling jacket and turbine shroud 27
Cylindrical surface axially position, and pass through the flange face screw hole realization of cooling jacket 51 and being fixedly connected for turbine shroud 27.Shafting
Spiral groove seal rotating ring 7 in component 1, moving sealing ring 11 respectively with graphite stationary ring 18, mechanical sealing assembly in dry gas seals component 2
Graphite stationary ring 26 forms twice dynamic sealing in 3, and 27 inner bearing working chamber of turbine shroud is close with turbine chamber and extraneous progress respectively
Insulate from.In the course of work, lubrication oil circulation oil circuit, dry gas seals supply gas circuit, cooling water circulation road and the high pressure for blowing turbine
Source of the gas gas circuit schematic diagram is shown in Figure 17~illustrated in Figure 20.
Claims (12)
- A kind of 1. highway turbine machine suitable for high temperature high back pressure dry gas sealing structure, it is characterised in that：Including turbine shafting Component (1), dry gas seals component (2), mechanical dynamic seal component (3), housing unit (4), cooling jacket component (5)；Turbine wheel shaft Module (1) passes through and installed in housing unit (4) inside, and dry gas seals component (2) is located at housing unit (4) inside and and whirlpool Wheel shaft module (1) connects, and cooling jacket component (5) location and installation is exterior in housing unit (4), mechanical dynamic seal component (3) It is connected installed in housing unit (4) inside and with turbine wheel shaft module (1).
- 2. a kind of highway turbine machine suitable for high temperature high back pressure dry gas sealing structure according to claim 1, it is special Sign is：The turbine wheel shaft module (1) includes monoblock type turbine rotor (6), helicla flute rotating ring (7), axle sleeve (8), the axis of rolling Hold (9), rolling bearing (10), moving sealing ring (11), abutment sleeve (12), clamp nut (13)；Helicla flute rotating ring (7) is sleeved on the axis of monoblock type turbine rotor (6), and is pressed in the turbine of monoblock type turbine rotor (6) On disk, O-ring seal (14) is equipped between the turbine disk of helicla flute rotating ring (7) and monoblock type turbine rotor (6)；Axle sleeve (8) is tight Press helicla flute rotating ring (7)；On rolling bearing (9) set axis, and contacted with axle sleeve (8)；Rolling bearing (10) is sleeved on axis, and is passed through Ladder is spacing；Moving sealing ring (11) is sleeved on axis and compresses rolling bearing (10), and moving sealing ring (11) is equipped with O-shaped close between axis Seal (15)；Abutment sleeve (12) is sleeved on axis and compresses moving sealing ring (11)；Clamp nut (13) and monoblock type turbine rotor (6) Axis is connected through a screw thread and compresses abutment sleeve (12).
- 3. a kind of highway turbine machine suitable for high temperature high back pressure dry gas sealing structure according to claim 1, it is special Sign is：The dry gas seals component (2) includes dry gas seals housing (16), circlip (17), graphite stationary ring (18), stationary ring Baffle ring (19), compression spring (20), O-ring seal (21), O-ring seal (22)；Circlip (17) is installed on seal casinghousing (16) in circlip slot, 8 compression springs (20) are circumferentially uniformly shelved in the spring eye of dry gas seals housing (16), Stationary ring baffle ring (19) is placed on compression spring (20), and graphite stationary ring (18) is shelved on stationary ring baffle ring (19), dry gas seals shell There are the corresponding paired graphite stationary ring of boss shape (18), the circumferential position-limiting action of stationary ring baffle ring (19) in body (16) annular groove；Sealing O-ring seal (21) is provided with the outer wall of housing (16), stationary ring baffle ring (19) is provided with O-shaped with seal casinghousing (16) contact position Sealing ring (22).
- 4. a kind of highway turbine machine suitable for high temperature high back pressure dry gas sealing structure according to Claims 2 or 3, its It is characterized in that：The graphite stationary ring (18), stationary ring baffle ring (19) are positioned at the semicircle of seal casinghousing (16) by semi-circular recesses On shape boss, compression spring (20) provides axial elastic force to stationary ring baffle ring (19), graphite stationary ring (18), ensures that graphite is quiet during work Ring (18) can fit closely together with the helicla flute rotating ring (7) in shafting component (1), and it is secondary to form dynamic sealing friction.
- 5. a kind of highway turbine machine suitable for high temperature high back pressure dry gas sealing structure according to claim 1, it is special Sign is：The mechanical dynamic seal component (3) includes compression spring (20), O-ring seal (14), seal casinghousing (23), guiding Screw (24), stationary seat (25), graphite stationary ring (26)；6 compression springs (20) are circumferentially uniformly positioned over seal casinghousing (23) In in corresponding spring eye, stationary seat (25) is connected by guider screw (24) with seal casinghousing (23), and stationary seat (25) is placed In on the end face of compression spring (20), graphite stationary ring (26) is bonded together by epoxy resin and stationary seat (25)；Compress bullet Spring (20) provides graphite stationary ring (26) axial elastic force.
- 6. a kind of highway turbine machine suitable for high temperature high back pressure dry gas sealing structure according to claim 2 or 5, its It is characterized in that：Graphite stationary ring (26) forms another road dynamic sealing friction pair with the moving sealing ring (11) in shafting component (1).
- 7. a kind of highway turbine machine suitable for high temperature high back pressure dry gas sealing structure according to claim 1, it is special Sign is：The housing unit (4) include turbine shroud (27), turbine lid (28), nozzle of air supply (29), preloading spring (30), End ring (31), current limliting screw (49), adapter (37), adapter (41), adapter (42), plug (35), plug (39), Plug (43), plug (46), O-ring seal (32), O-ring seal (33)；Turbine lid (28) passes through its convex platform and turbine case Groove on body (27) is positioned；Nozzle of air supply (29) is equipped with nozzle (47) and location hole (48), nozzle of air supply (29), and Positioning is connected with turbine shroud (27) by location hole (48) and shop bolt, it is compressed by turbine lid (28), passes through tune Different location holes (48) is positioned with turbine shroud (27) on whole nozzle of air supply (29)；Compression spring (30) is held on turbine In housing (27), end ring (31) is positioned on preloading spring (30) end face, and preloading spring (30) is formed to end ring (31) elastic force to the left；There is boss to carry out to right limit end ring (31) on turbine shroud (27) at the same time；Each adapter, block up Head has sealing copper packing to carry out static seal with turbine shroud (27) connection.
- 8. a kind of highway turbine machine suitable for high temperature high back pressure dry gas sealing structure according to claim 7, it is special Sign is：By inlet suction port (37) air inlet, gas enthalpy drop is completed by nozzle of air supply (29) top nozzle (47) and is turned to kinetic energy Swap-in and drive turbine to rotate, pass through exhaust joint (41) complete exhaust.
- 9. a kind of highway turbine machine suitable for high temperature high back pressure dry gas sealing structure according to claim 2 or 7, its It is characterized in that：Can be rolling bearing (9) in turbine by adapter (42), rolling bearing (10) and dynamic sealing friction pair carry For lubrication.
- 10. a kind of highway turbine machine suitable for high temperature high back pressure dry gas sealing structure according to claim 3 or 7, It is characterized in that：Can also be that dry gas seals component (2) provides sealing dry gas by adapter (42).
- A kind of 11. superelevation suitable for high temperature high back pressure dry gas sealing structure according to any one of claim 1-10 Fast turbine, it is characterised in that：The cooling jacket component (5) includes cooling jacket (51), oil-discharging joint (52), O-shaped sealing Enclose (53), O-ring seal (54), O-ring seal (55), sealing copper packing (56), into drainage joint (57)；Cooling jacket (51) is logical Its inner circle to be crossed to be sleeved on the outer ring of turbine shroud (27), cooling jacket (51) inner surface is provided with axial and circumferential cooling water flow conduits, And the lower cylindrical section of the oil-discharging joint (52) by being tightened on cooling jacket (51) forms the positioning with turbine shroud (27)； Oil-discharging joint (52) at the same play turbine shroud (27) inner bearing chamber outage effect；Cooling water is screwed into drainage joint (57) Cover on (51), by the way that into drainage joint (57) cooling water and draining can be completed to cooling jacket (51), formed to housing The cooling heat dissipation of component (4).
- 12. a kind of highway turbine machine suitable for high temperature high back pressure dry gas sealing structure according to Claims 2 or 3, It is characterized in that：The shafting component (1) coordinates the effect of housing unit (4) to form the turbine shafting of a set of steady running, shell There is corresponding boss to carry out the left side outer ring of rolling bearing (9) in body component (4) at installation position of bearings spacing, by spacing Ensure that part helicla flute rotating ring (7), axle sleeve (8) are stably assemblied in unitary rotor (6)；Bearing in housing unit (4) Baffle ring (31) carries out the right side outer ring of rolling bearing (10) on spacing, preloading spring (30) the compression bearing in housing unit (4) Baffle ring (31), forms the pretightning force to the left to rolling bearing (10) outer ring.
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| CN201610951387.8A CN108005727B (en) | 2016-10-27 | 2016-10-27 | Ultrahigh-speed turbine applicable to high-temperature high-back-pressure dry gas sealing structure |
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| CN114033499A (en) * | 2021-11-10 | 2022-02-11 | 北京动力机械研究所 | High-efficient seal structure of runoff turbine power generation system rotor big pressure gradient |
| CN114981595A (en) * | 2020-01-23 | 2022-08-30 | 赛峰飞机发动机公司 | Assembly for a turbomachine |
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| CN108005727B (en) | 2019-12-20 |
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