CN106437857B - The equipment of screw path type steam turbine and application screw path type steam turbine - Google Patents
The equipment of screw path type steam turbine and application screw path type steam turbine Download PDFInfo
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- CN106437857B CN106437857B CN201610943536.6A CN201610943536A CN106437857B CN 106437857 B CN106437857 B CN 106437857B CN 201610943536 A CN201610943536 A CN 201610943536A CN 106437857 B CN106437857 B CN 106437857B
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- steam turbine
- rotary shaft
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- path type
- steam
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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
- F01D1/00—Non-positive-displacement machines or engines, e.g. steam turbines
- F01D1/34—Non-positive-displacement machines or engines, e.g. steam turbines characterised by non-bladed rotor, e.g. with drilled holes
- F01D1/38—Non-positive-displacement machines or engines, e.g. steam turbines characterised by non-bladed rotor, e.g. with drilled holes of the screw type
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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
- 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
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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
- 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
Abstract
The present invention provides the equipment of a kind of screw path type steam turbine and application screw path type steam turbine, it is related to forming a cavity inside steam turbine technology field, including steam turbine shell；Rotary shaft is installed in steam turbine shell and rotary shaft runs through steam turbine shell；Helical rotor is within the cavity and affixed with rotary shaft；Bottom plate is sealed with helical rotor and rotor protection layer cooperatively forms one end open and is wrapped in the sleeve on the outside of helical rotor; helical rotor cooperatively forms helical duct with sleeve; and along the axial line of rotary shaft; helical duct includes first end and second end; direction of axis line first end along rotary shaft is close to bottom plate; far from bottom plate, and along first end to the second extreme direction, the volume of helical duct unit length gradually increases second end；Rotary shaft is equipped with steam channel；Blow-off line is set on steam turbine shell.The air passage structure of the screw path type steam turbine is more simple, complete machine structure is more simplified, performance is more lasting.
Description
Technical field
The present invention relates to steam turbine technology fields, more particularly, to a kind of screw path type steam turbine and apply helical duct
The equipment of formula steam turbine.
Background technology
Steam turbine can be used as prime mover of power generation, can also directly drive various pumps, wind turbine, compressor and ship spiral shell
Revolve paddle etc., it may also be used for low boiling working fluid turbine system.During producing electricl energy, steam turbine by boiler transmission come steaming
The energy of vapour is converted into the rotary power of mechanical work, is generated electricity by the generator of drive connection.
But traditional steam turbine that power plant uses, volume is heavy, complicated, involves great expense.For example, power plant uses
Traditional steam turbine, including rotating part and stationary part are in two sub-sections.Stationary part is also known as stator, stator by into vapour part,
The structure compositions such as cylinder, partition board and static cascade, packing and bearing.Cylinder in stationary part is the shell of steam turbine, it is by vapour
The flow passage component of turbine is separated with air, forms closed steam chest inside steam turbine, ensures that steam completes energy inside steam turbine
The transfer process of amount.The parts such as nozzle box, partition board, diaphragm housing ring are installed in cylinder；It is connected into vapour, steam discharge, pumping outside cylinder
The pipelines such as vapour.Rotating part is also known as rotor, and rotor is by structure compositions such as main shaft, impeller, movable vane piece and shaft couplings.It can therefrom see
Go out the complicated of traditional steam turbine.
In addition, the height of cylinder, intermediate pressure section are generally formed using very thick steel alloy or cast carbon steel, complex process cost
Height, there are uneven heatings, and cylinder body can be caused to be easily deformed etc. drawback；Rotor is generally formed using alloy steel forging overall processing,
Rotor needs after processing are further finished and it is necessary in all blades of fit on, carry out rotation experiment at full speed
It could be mounted on steam turbine later with accurate dynamic balancing；The components such as rotor bushing, impeller, axle envelope set, shaft coupling are all difference
After processing, hot jacket uses interference fit on stepped main shaft between each component and main shaft, to prevent impeller etc. because of centrifugation
Power and action of thermal difference cause to loosen, and key is used in combination to transmit torque；Forging is big, and processing technology requires height, and the process-cycle is long, and forges greatly
Part quality is difficult to ensure.It can be seen that the manufacturing process and assembly technology of traditional steam turbine are complicated, assembly precision requires height.
In addition, when steam turbine works, high steam and each grade blade of steam turbine of entrance, are all perpendicular contacts,
The linear velocity of especially last stage vane of steam turbine, outer blade diameter is very high.If there is water droplet ingredient in steam, water droplet vertical direction toward impact
Last stage vane of steam turbine, huge linear velocity and vertical direction toward impact, it is more likely that last stage vane of steam turbine fatigue is caused even to damage.
If the vertical speed of steam carries the substances such as iron rust, iron sand and incrustation scale, enter in steam turbine and vertical direction toward impact blade,
It will lead to the damage of blade, especially high-speed rotating exhaust stage blade.If broken blade is high back and forth in cylinder of steam turbine body
Speed is hit, this very likely results in steam turbine complete machine and scraps, or even even more serious accident occurs.There it can be seen that traditional
Steam turbine maintenance in use and maintenance procedures are complex, cost is higher and exhaust stage blade is fragile.
Traditional steam turbine due to the requirement to steam circulation passage, cause complicated integral structure, assembly precision requirement it is high,
The problem that maintenance and maintenance procedures in use is complex, manufacturing cost is high.Therefore it needs to provide a kind of air flue more simple
The steam turbine single, structure is more simplified, performance is more lasting.
Invention content
The purpose of the present invention is to provide a kind of screw path type steam turbine and application screw path type steam turbine equipment,
To solve, existing steam turbine structure is complicated, manufacturing process is complicated, assembly technology requirement is high, maintenance procedures are complicated and steam turbine end
The technical issues of grade blade is easily damaged.The spiral channel formula steam turbine is mainly used as prime mover of power generation, can also directly drive
Various pumps, wind turbine, compressor and propeller for vessels etc., it may also be used for low boiling working fluid turbine system.
In a first aspect, the present invention provides a kind of screw path type steam turbine, including：Steam turbine shell, rotary shaft, spiral turn
Son, bottom plate, helical rotor sealing and rotor protection layer and blow-off line, wherein：
A cavity is formed inside the steam turbine shell；The rotary shaft is installed in the steam turbine shell and institute
It states rotary shaft and runs through the steam turbine shell；The helical rotor is located in the cavity and affixed with the rotary shaft；It is described
Bottom plate is sealed with the helical rotor and rotor protection layer cooperatively forms one end open and is wrapped on the outside of the helical rotor
Sleeve, the helical rotor cooperatively form helical duct with the sleeve, and along the axial line of the rotary shaft, the spiral is logical
Road includes first end and second end, and first end described in the direction of axis line along the rotary shaft is close to the bottom plate, and described second
End is far from the bottom plate, and along the first end to second extreme direction, the volume of the helical duct unit length is gradual
Increase；The rotary shaft is equipped with steam channel, and the steam channel one end open is on the end face of the rotary shaft, the other end
Opening is in the initial position of the first end；
The blow-off line is set on the steam turbine shell, is located at the outlet port of the second end, is used for institute
State the steam discharge of helical duct discharge.
Further, the ring road of the helical duct gradually increases along the size of the first end to second extreme direction
Greatly.
Further, the helical rotor is multistage, latter along the length direction of the rotary shaft since the bottom plate
The blade radius of the helical rotor of grade is more than the blade of helical rotor described in previous stage.
Further, further include the steam inlet pipe road and the rotation for the steam inlet pipe road of the helical duct steam supply
The end face opening of shaft forms docking.
Further, the steam turbine shell includes pedestal and upper cover, and the pedestal has integral type knot with the upper cover
Structure；Alternatively,
The pedestal is detachably connected with the upper cover.
Further, the rotary shaft is equipped with bearing with the steam turbine shell junction, is provided on the pedestal
Bearing block for fixing the bearing.
Further, the steam inlet pipe road is provided with first for preventing junction from leaking vapour with the rotation shaft connection place
Axle envelope, and first axle envelope has integral structure with the steam inlet pipe road；The one end of the rotary shaft far from the bottom plate
It is provided with the second axle envelope for preventing steam to be discharged from the bearing with the rotation shaft connection place.
Further, the tail end of the one end of the rotary shaft far from the steam inlet pipe road is provided with thrust bearing, described to stop
Thrust bearing is used to limit the axial position of the rotary shaft.
Further, further include Temperature-controlled appliance and pressure control equipment, the Temperature-controlled appliance is for detecting institute
The temperature height in cavity is stated, the pressure control equipment is used to detect the pressure size in the cavity.
Second aspect, the present invention also provides a kind of equipment using screw path type steam turbine, including such as above-mentioned technical side
Any screw path type steam turbine proposed in case.
The equipment of screw path type steam turbine provided by the invention and application screw path type steam turbine can generate to be had as follows
Beneficial effect：
The present invention provides a kind of screw path type steam turbine, including：Steam turbine shell, rotary shaft, helical rotor, bottom plate,
Helical rotor seals and rotor protection layer and blow-off line, wherein：A cavity is formed inside steam turbine shell；Rotary shaft pivot fills
In in steam turbine shell and rotary shaft run through steam turbine shell；Helical rotor is within the cavity and affixed with rotary shaft；Bottom plate
One end open is cooperatively formed with helical rotor sealing and rotor protection layer and is wrapped in the sleeve on the outside of helical rotor, and spiral turns
Son cooperatively forms helical duct with sleeve, and along the axial line of rotary shaft, helical duct includes first end and second end, along rotation
The direction of axis line first end of axis is close to bottom plate, and second end is far from bottom plate, and along first end to the second extreme direction, helical duct list
The volume of bit length gradually increases；Rotary shaft is equipped with steam channel, and steam channel one end open is on the end face of rotary shaft, separately
One end open is in the initial position of first end；Blow-off line is set on steam turbine shell, is located at the outlet port of second end, is used
In the steam discharge that helical duct is discharged.In use, steam enters from the opening in rotation axial end and flows through steam channel
Into the initial position of the first end of helical duct；Since helical duct one end has bottom plate blocking, steam to be merely able to from the other end
It goes out, and the volume of helical duct unit length gradually increases, the steam for flowing into first end is flowed along helical duct, step by step
Pressure release, and helical rotor is pushed to rotate；Drive the rotary shaft affixed with it to rotate while helical rotor rotates, rotary shaft it is defeated
Outlet output kinetic energy drives gen-set power generation output or drives other devices.Screw path type steamer provided by the invention
Not only complete machine structure is simple for machine, small, light weight, repair and maintenance process are simple, assemble and manufacturing process is simple, Er Qiezheng
Vapour is flowed along helical duct, and exhaust stage blade is hardly damaged, and helical rotor service life is long, to helical duct provided by the invention
Formula steam turbine service life is long.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Attached drawing needed in embodiment is briefly described, it should be apparent that, the accompanying drawings in the following description is of the invention
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is in the equipment of screw path type steam turbine provided in an embodiment of the present invention and application screw path type steam turbine
Single step helical rotor structure schematic diagram；
Fig. 2 is the screw path type steam turbine structure signal provided in an embodiment of the present invention for being equipped with single step helical rotor
Figure；
Fig. 3 is in the equipment of screw path type steam turbine provided in an embodiment of the present invention and application screw path type steam turbine
Two-stage screw rotor structure schematic diagram；
Fig. 4 is the screw path type steam turbine structure signal provided in an embodiment of the present invention for being equipped with two-stage screw rotor
Figure.
Icon：101- upper covers；102- pedestals；2- rotary shafts；201- steam channels；3- helical rotors；301-
One end；302- second ends；4- bottom plates；5- helical rotors seal and rotor protection layer；6- blow-off lines；7- steam inlet pipes road；
8- bearings；9- bearing blocks；The first axle envelopes of 10-；The second axle envelopes of 11-；12- thrust bearings.
Specific implementation mode
Technical scheme of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
The every other embodiment that personnel are obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term "center", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for the description present invention and simplify description, do not indicate or imply the indicated device or element must have a particular orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for description purposes only, and is not understood to indicate or imply relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
Can also be electrical connection to be mechanical connection；It can be directly connected, can also indirectly connected through an intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
The specific implementation mode of the present invention is described in detail below in conjunction with attached drawing.It should be understood that this place is retouched
The specific implementation mode stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
It is essential device using steam turbine in the equipment of screw path type steam turbine.Steam turbine can be used as sending out
Prime mover of electricity, can also directly drive various pumps, wind turbine, compressor and propeller for vessels etc., it may also be used for low boiling working fluid
Turbine system.Boiler generates steam by burning fuel in electricity generation system, and steam enters the air flue of steam turbine by pipeline
Interior, the rotation of the rotor of driving steam turbine drives coupled rotary shaft 2 to rotate after turbine rotor rotation, rotary shaft 2 it is defeated
Outlet is connected with generator, drives electrical power generators, carries out electric power output.During electricity generation system is powered, steam turbine rises
Vital effect is arrived, the energy of steam is converted into the rotary power of output shaft by steam turbine, and generator is driven to supply
Electricity.
In addition, steam turbine can directly drive various pumps, wind turbine, compressor and ship spiral by the output end of its rotary shaft
Paddle etc., it may also be used for low boiling working fluid turbine system.
The present invention provides a kind of equipment using screw path type steam turbine, including any proposed in following technical scheme
Kind screw path type steam turbine.
As shown in Figs. 1-2, the present invention provides a kind of screw path type steam turbine, including：Steam turbine shell, rotary shaft 2,
Helical rotor 3, bottom plate 4, helical rotor sealing and rotor protection layer 5 and blow-off line 6, wherein：
A cavity is formed inside steam turbine shell；Rotary shaft 2 is installed in steam turbine shell and rotary shaft 2 runs through vapour
Turbine shell；Helical rotor 3 is within the cavity and affixed with rotary shaft 2；Bottom plate 4 is sealed with helical rotor and rotor protection layer 5
It cooperatively forming one end open and is wrapped in the sleeve in 3 outside of helical rotor, helical rotor 3 cooperatively forms helical duct with sleeve,
And along the axial line of rotary shaft 2, helical duct includes first end 301 and second end 302, along the direction of axis line of rotary shaft 2
Close to bottom plate 4, second end 302 arrives 302 direction of second end, helical duct unit far from bottom plate 4, and along first end 301 for one end 301
The volume of length gradually increases；Rotary shaft 2 is equipped with steam channel 201, and 201 one end open of steam channel is at the end of rotary shaft 2
On face, another end opening is in the initial position of first end 301；
Blow-off line 6 is set on steam turbine shell, is located at 302 outlet port of second end, for helical duct to be discharged
Steam discharge.
Specifically, in use, steam, which enters from the opening on 2 end face of rotary shaft and flows through steam channel 201, enters spiral
The initial position of the first end 301 in channel；Since helical duct one end has the blocking of bottom plate 4, steam to be merely able to go out from the other end,
And the volume of helical duct unit length gradually increases, and the steam for flowing into first end 301 is flowed along helical duct, is let out step by step
Pressure, and helical rotor 3 is pushed to rotate；The rotary shaft 2 affixed with it is driven to rotate while helical rotor 3 rotates, rotary shaft 2
Output end output kinetic energy drives gen-set power generation output or drives other devices.Screw path type vapour provided by the invention
Not only complete machine structure is simple for turbine, small, light weight, repair and maintenance process are simple, assemble and manufacturing process is simple, but also
Steam is flowed along helical duct, and exhaust stage blade is hardly damaged, and 3 service life of helical rotor is long, to spiral provided by the invention
Channel-type steam turbine service life is long.
It should be noted that since helical duct is by one end that bottom plate 4 is sealed with helical rotor and rotor protection layer 5 is formed
The sleeve of opening wraps up, and helical rotor 3 cooperatively forms helical duct with sleeve, enters helical duct the from steam channel 201
The high steam of one end 301 can only be flowed along helical duct from first end 301 to 302 direction of second end.Because along first end
301 arrive 302 direction of second end, and the volume of helical duct unit length gradually increases, and high steam is flowing to the by first end 301
Gradual pressure release forms steam exhaust during two ends 302, and steam does work to helical rotor 3, pushes its rotation in this process；
Steam exhaust after final pressure release is flowed out from the opening of second end 302, fills the inside cavity that steam turbine shell is formed.In order to protect
The safety for demonstrate,proving steam turbine, is provided with discharge duct, the steam exhaust after pressure release is discharged by discharge line on steam turbine shell
The inside of cavity.
It should be noted that after high steam enters the first end 301 of helical duct, along the rotation rail of helical duct
Road flowed, pressure release step by step, even if being mingled with inside high steam for example, the foreign matters such as water droplet, iron rust, iron sand and incrustation scale enter
It into the helical duct of screw path type steam turbine, can also be discharged, helical rotor 3 will not be caused larger along helical duct
Injury.3 service life of helical rotor of screw path type steam turbine provided by the invention is long.
Since high steam enters by steam channel 201 first end 301 of helical duct, so first end 301 is
Higher-pressure region；Because arriving 302 direction of second end along first end 301, the volume of helical duct unit length gradually increases, high steam
Gradual pressure release during flowing to second end 302 by first end 301, so second end 302 is low-pressure area.
In addition, the sleeve that bottom plate 4 is sealed with helical rotor and rotor protection layer 5 is formed and 2 phase of helical rotor 3 and rotary shaft
Mutually cooperation, will enter higher-pressure region high-temperature steam be closed in helical duct, make its can only along helical duct flow without
The steam at other positions is revealed, and bottom plate 4 and helical rotor sealing and rotor protection layer 5 need to bear high steam to be applied to it
Power effect.Based on this, it is steel alloy to choose bottom plate 4 and the material of helical rotor sealing and rotor protection layer 5, and to the two
Thickening processing is carried out, specific thickness size can be set according to the maximum pressure for the high steam for entering steam turbine.It is preferred that
Ground, it is double-layer structure to choose bottom plate 4 with helical rotor sealing and rotor protection layer 5.
In addition, helical rotor sealing and rotor protection layer 5 can be two layers, one layer is for the adjacent of enclosing coil rotor 3
To form the sealing of helical duct, one layer is to wrap the knot formed with 3 blade of helical rotor in several sealings for the side of two blades
Outer housing on the outside of structure, the outer housing cooperatively form one end open with bottom plate 4 and are wrapped in the sleeve in 3 outside of helical rotor.
In order to make the high steam for entering first end 301 by steam channel 201 arrive 302 side of second end along first end 301
To movement, the volume of helical duct unit length gradually increases.
It is that the ring road of helical duct is along first end 301 to the second to make the increased method of the volume of helical duct unit length
The size in 302 directions is held gradually to increase.
Specifically, as shown in Figs. 1-2, high steam enters helical duct by the steam channel 201 in rotary shaft 2
First end 301, all high steams are all sealed in helical duct, and high steam is by force effect on helical rotor 3.
The pressure that helical rotor 3 is born is equal to the product of pressure and forced area, since the area of the i.e. higher-pressure region ring road of first end 301 is non-
Often small, so forced area is very small, therefore the pressure that helical rotor 3 is born at this is with regard to smaller；Later, high steam is along spiral shell
Channel constantly allowance for expansion is revolved, constantly does work and consumes pressure and energy；Simultaneously by tens grades of even more spiral channels
Along with the continuous decaying of energy, the steam exhaust of not pressure is finally discharged from the tail end of the second end of helical duct 302；Steam turbine
Steam exhaust in cavity is discharged blow-off line 6 on shell, makes it into condenser and is condensed, carries out the profit of after-heat
With, and restore and continue cycling through use as condensed water.
Although arriving 302 direction of second end along first end 301, the ring road size of helical duct, which gradually increases, can increase spiral
The volume of channel unit length, but this method is not unlimited.If the method that selection simply increases ring road size is come
Increase the volume of the unit length of helical duct, the length of affixed rotary shaft 2 will be made long with helical rotor 3, the shape
Not only the intensity of rotary shaft 2 need to improve much with rigidity requirement under state, but also the size of complete machine is very big.
Therefore it in order to advanced optimize screw path type steam turbine provided by the invention, adapts it under high-power state
Use demand.As shown in Figure 3-4, helical rotor 3 is set as multistage, latter along the length direction of rotary shaft 2 since bottom plate 4
The blade radius of the helical rotor 3 of grade is more than the blade of previous stage helical rotor 3.
It is that two-stage, previous stage helical rotor 3 and sleeve and rotary shaft 2 form high pressure cylinder, rear stage that helical rotor 3, which can be chosen,
Helical rotor 3 and partial sleeves and rotary shaft 2 form low pressure (LP) cylinder；Alternatively, it is that three-level is even more multistage that can choose helical rotor 3.
Specifically, the blade of rear stage helical rotor 3 and the blade of previous stage helical rotor 3 have integral structure, and the two forms whole
A helical rotor 3.The ring road size for the helical duct that the blade of rear stage helical rotor 3 is formed is also in compliance with upper level helical rotor
The ring road size variation rule for the helical duct that 3 blade is formed, the i.e. ring road of helical duct arrive second end along first end 301
The size in 302 directions gradually increases.But the size for originating ring road that rear stage helical rotor 3 is formed, it need to be according to previous stage spiral shell
The radius of the volume for the tail end ring road that gyrator 3 is formed and the blade of rear stage helical rotor 3 determines after being calculated.
It should be noted that the blade angle of helical rotor 3 can influence flowing velocity of the steam in helical duct.In phase
In isostructural steam turbine, only change the blade angle of helical rotor 3, when the center line of the blade and rotary shaft 2 of helical rotor 3
Vertical direction angle it is big when, steam is fast by the speed of helical duct；When the center of the blade and rotary shaft 2 of helical rotor 3
The vertical direction angle hour of line, steam are slow by the speed of helical duct.
In addition, since helical rotor 3 needs to contact high steam, and the core missions of entire steam turbine are executed, choose spiral shell
The material of gyrator 3 is superior alloy steel.The helical rotor 3 of steam turbine is generally tens circles or more, and each of which blade is solely subjected to
Pressure difference in front and back helical duct, so need not be very thick.But it is considered as far as possible when designing and manufacturing helical rotor 3
Surplus thickness ensures steam turbine spiral channel pressure, can completely control in the range of being perfectly safe.Strive for accomplish entire
Turbine rotor is disposably put into, and spiral channel need not be opened and be overhauled again.
Screw path type steam turbine provided by the invention further includes for the steam inlet pipe road 7 of helical duct steam supply, into vapour
Pipeline 7 is docked with the end face opening formation of rotary shaft 2.
Specifically, steam inlet pipe road 7 is connected with the opening of steam channel 201 on 2 end face of rotary shaft, the high pressure being discharged from boiler
Steam passes sequentially through steam inlet pipe road 7 and steam channel 201, enters the first end 301 of helical duct.
In addition, steam turbine shell includes pedestal 102 and upper cover 101, pedestal 102 has integral structure with upper cover 101；Or
Person,
Pedestal 102 is detachably connected with upper cover 101.
And specifically, it is preferable to which the pedestal 102 of steam turbine shell is detachable structure with upper cover 101.Pedestal 102 and upper cover 101
Detachable structure, be convenient for screw path type steam turbine manufacture, assembly and maintenance.Since rotary shaft 2 is positioned over pedestal 102
On, and the structures such as helical rotor 3, bottom plate 4, helical rotor sealing and rotor protection layer 5, overall weight are connected in rotary shaft 2
Larger, pedestal 102 needs to choose thicker steel alloy to meet stability and the safety of entire screw path type steam turbine.But
Because the weight in rotary shaft 2 is less than the weight in traditional steam turbine rotary shaft 2, screw path type steam turbine provided by the invention
102 thickness of pedestal be much smaller than 102 thickness of pedestal of traditional steam turbine.
In addition, because being the steam exhaust after pressure release, upper cover 101 and pedestal in the cavity that upper cover 101 is formed with pedestal 102
102 do not contact with high steam, so upper cover 101 selects general steel or steel alloy, and 101 thickness of upper cover can
101 thickness of upper cover of far smaller than traditional steam turbine.In a word to sum up, provided by the invention compared with traditional steam turbine
Screw path type steam turbine need not possess the very thick steel alloy cylinder block of traditional steam turbine, screw path type provided by the invention
The weight and cost of steam turbine can reduce very much.
In addition, due to the rotation of the high speed under the drive of helical rotor 3 of rotary shaft 2, rotary shaft 2 is filled with steam turbine shell pivot
Place is easy to happen abrasion, so installing bearing 8 in rotary shaft 2 and steam turbine shell junction, is arranged for fixing on pedestal 102
The bearing block 9 of bearing 8.Bearing block 9 can be an integral structure with pedestal 102.
In addition, the high steam of boiler discharge is revealed in steam inlet pipe road 7 and 2 junction of rotary shaft in order to prevent,
The position is provided with the first axle envelope 10 for preventing junction from leaking vapour, and the first axle envelope 10 has integral type with steam inlet pipe road 7
Structure prevents the leakage of high steam；In addition, the steam exhaust leakage in the cavity that steam turbine shell is formed in order to prevent, and it is inconvenient
In blow-off line 6 carry out steam exhaust discharge and utilization, the one end of rotary shaft 2 far from bottom plate 4 be provided with for prevent steam from
Second axle envelope 11 of bearing 8 and the discharge of 2 junction of rotary shaft.
In addition, in rotation the shaking along centerline direction occurs for rotary shaft 2, rotary shaft 2 is far from steam inlet pipe in order to prevent
The tail end of the one end in road 7 is provided with thrust bearing 12, and thrust bearing 12 is used to limit the axial position of rotary shaft 2, to limit
Axially and radially displacement does not occur for helical rotor 3.
Screw path type steam turbine provided by the invention further includes Temperature-controlled appliance and pressure control equipment, temperature control
Equipment is for the temperature height in test chamber, and pressure control equipment is for the pressure size in test chamber.Temperature control is set
Standby and pressure control equipment can protect screw path type steam turbine to carry out the operating for a long time and stablized.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, it will be understood by those of ordinary skill in the art that：Its according to
So can with technical scheme described in the above embodiments is modified, either to which part or all technical features into
Row equivalent replacement；And these modifications or replacements, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of screw path type steam turbine, which is characterized in that including：Steam turbine shell, rotary shaft, helical rotor, bottom plate, spiral shell
Gyrator seals and rotor protection layer and blow-off line, wherein：
A cavity is formed inside the steam turbine shell；The rotary shaft is installed in the steam turbine shell and the rotation
Shaft runs through the steam turbine shell；The helical rotor is located in the cavity and affixed with the rotary shaft；The bottom plate
The set for cooperatively forming one end open with helical rotor sealing and rotor protection layer and being wrapped on the outside of the helical rotor
Tin, it is fixedly connected on the outside of the sleeve and the helical rotor；The sleeve is located in the cavity of the steam turbine shell, and
Gap is equipped between the lateral surface of sleeve and the madial wall of the steam turbine shell；The helical rotor coordinates shape with the sleeve
At helical duct, and along the axial line of the rotary shaft, the helical duct includes first end and second end, along the rotary shaft
Direction of axis line described in first end close to the bottom plate, the second end is far from the bottom plate, and along the first end to institute
The second extreme direction is stated, the volume of the helical duct unit length gradually increases；The rotary shaft is equipped with steam channel, described
Steam channel one end open is on the end face of the rotary shaft, and another end opening is in the initial position of the first end；
The blow-off line is set on the steam turbine shell, is located at the outlet port of the second end, is used for the spiral shell
Revolve the steam discharge of channel discharge.
2. screw path type steam turbine according to claim 1, which is characterized in that the ring road of the helical duct is described in
The size of first end to second extreme direction gradually increases.
3. screw path type steam turbine according to claim 2, which is characterized in that the helical rotor is multistage, from institute
It states bottom plate and starts the length direction along the rotary shaft, the blade radius of the helical rotor of rear stage is more than described in previous stage
The blade of helical rotor.
4. screw path type steam turbine according to claim 1, which is characterized in that further include for the helical duct
The steam inlet pipe road of steam supply, the steam inlet pipe road are docked with the end face opening formation of the rotary shaft.
5. screw path type steam turbine according to claim 4, which is characterized in that the steam turbine shell include pedestal and
Upper cover, the pedestal have integral structure with the upper cover；Alternatively,
The pedestal is detachably connected with the upper cover.
6. screw path type steam turbine according to claim 5, which is characterized in that the rotary shaft and the steamer casing
Body junction is equipped with bearing, and the bearing block for fixing the bearing is provided on the pedestal.
7. screw path type steam turbine according to claim 6, which is characterized in that the steam inlet pipe road and the rotary shaft
Junction is provided with the first axle envelope for preventing junction from leaking vapour, and first axle envelope has one with the steam inlet pipe road
Formula structure；The one end of the rotary shaft far from the bottom plate is provided with for preventing steam from connecting from the bearing and the rotary shaft
Connect the second axle envelope of place's discharge.
8. screw path type steam turbine according to claim 7, which is characterized in that the rotary shaft is far from the steam inlet pipe
The tail end of the one end in road is provided with thrust bearing, and the thrust bearing is used to limit the axial position of the rotary shaft.
9. the screw path type steam turbine according to any one of claim 1-8, which is characterized in that further include temperature control
Control equipment and pressure control equipment, the Temperature-controlled appliance are used to detect the temperature height in the cavity, the pressure control
Control equipment is used to detect the pressure size in the cavity.
10. a kind of equipment using screw path type steam turbine, which is characterized in that including as described in claim any one of 1-9
Screw path type steam turbine.
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| CN201610943536.6A CN106437857B (en) | 2016-11-01 | 2016-11-01 | The equipment of screw path type steam turbine and application screw path type steam turbine |
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| CN201610943536.6A CN106437857B (en) | 2016-11-01 | 2016-11-01 | The equipment of screw path type steam turbine and application screw path type steam turbine |
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| CN106437857B true CN106437857B (en) | 2018-08-14 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107420132A (en) * | 2017-06-15 | 2017-12-01 | 翁志远 | Rotor, steam turbine and the steam turbine equipment of multiple coil structure |
| CN108035775A (en) * | 2018-01-08 | 2018-05-15 | 翁志远 | Rotor, steam turbine and prime mover equipment of steam turbine |
| CN110017173A (en) * | 2019-05-15 | 2019-07-16 | 游涛 | A kind of turbine and engine |
| CN110151076A (en) * | 2019-05-23 | 2019-08-23 | 中山市金舜家庭用品有限公司 | A kind of clearer and roll Steam mop |
| US20220364507A1 (en) * | 2021-05-14 | 2022-11-17 | Anthony Howard Lawson | Turbine Comprising One or More Helical Structures and Use Thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB2355768B (en) * | 1999-11-01 | 2004-03-17 | Kofi Abaka Jackson | Compressor or turbine rotor having spirally curved blades |
| CN200940499Y (en) * | 2006-06-29 | 2007-08-29 | 李克强 | Screw type turbomachine |
| CN201330619Y (en) * | 2009-01-19 | 2009-10-21 | 杨仁金 | Industrial exhaust heat steam and pneumatic helical engine |
| CN201696100U (en) * | 2009-12-25 | 2011-01-05 | 杨峰森 | Ship axial flow propulsor |
| CN104747239A (en) * | 2015-04-01 | 2015-07-01 | 南京航空航天大学 | Composite single screw expander |
| CN206144603U (en) * | 2016-11-01 | 2017-05-03 | 翁志远 | Helical coiled passage formula steam turbine and steam turbine device |
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