CN107956514A - A kind of adjustable rotary vane type expanding machine of expansion ratio - Google Patents
A kind of adjustable rotary vane type expanding machine of expansion ratio Download PDFInfo
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- CN107956514A CN107956514A CN201711253978.9A CN201711253978A CN107956514A CN 107956514 A CN107956514 A CN 107956514A CN 201711253978 A CN201711253978 A CN 201711253978A CN 107956514 A CN107956514 A CN 107956514A
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- cylinder
- expanding machine
- rotary vane
- vane type
- expansion ratio
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- 210000004907 gland Anatomy 0.000 claims abstract description 20
- 230000008878 coupling Effects 0.000 claims abstract description 11
- 238000010168 coupling process Methods 0.000 claims abstract description 11
- 238000005859 coupling reaction Methods 0.000 claims abstract description 11
- 230000007246 mechanism Effects 0.000 claims abstract description 9
- 230000001360 synchronised effect Effects 0.000 claims abstract description 9
- 230000005540 biological transmission Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 21
- 239000000126 substance Substances 0.000 description 6
- 230000008859 change Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010025 steaming Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C1/00—Rotary-piston machines or engines
- F01C1/30—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F01C1/34—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F01C1/08 or F01C1/22 and relative reciprocation between the co-operating members
- F01C1/344—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F01C1/08 or F01C1/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
- F01C1/3441—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F01C1/08 or F01C1/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C19/00—Sealing arrangements in rotary-piston machines or engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C20/00—Control of, monitoring of, or safety arrangements for, machines or engines
- F01C20/18—Control of, monitoring of, or safety arrangements for, machines or engines characterised by varying the volume of the working chamber
- F01C20/22—Control of, monitoring of, or safety arrangements for, machines or engines characterised by varying the volume of the working chamber by changing the eccentricity between cooperating members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
- F01C21/04—Lubrication
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
- F01C21/08—Rotary pistons
- F01C21/0809—Construction of vanes or vane holders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
- F01C21/10—Outer members for co-operation with rotary pistons; Casings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
- F01C2021/16—Other regulation or control
- F01C2021/1693—Stopping or starting, idling or no-load operation
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
- Control Of Turbines (AREA)
Abstract
The present invention relates to a kind of adjustable rotary vane type expanding machine of expansion ratio, including cylinder and cylinder cover, the both ends of the cylinder are symmetrically installed with cylinder cover, the cylinder internal is eccentric and is axially installed with rotor, several radially movable blades are evenly arranged on the excircle of the rotor, the armature spindle of the two ends of rotor is extend into the sliding block slided up and down inside cylinder cover, servomotor actuator is installed on the upside of the cylinder, the servomotor actuator drives the sliding block at both ends to slide up and down by synchronous drive mechanism, the bottom of the cylinder is connected with steam inlet pipe, gland steam exhauster is installed on the side circumferential side wall of the cylinder, wherein one end of armature spindle is connected by universal joint with power output shaft coupling.The present invention adjusts the degree of eccentricity of rotor and cylinder by linkage mechanism, so as to play the effect for the expansion ratio for adjusting rotary vane type expanding machine.
Description
Technical field
The present invention relates to expanding machine field, more particularly to a kind of adjustable rotary vane type expanding machine of expansion ratio.
Background technology
Expanding machine is a kind of machinery that mechanical work is externally exported using the gas expansion with certain pressure, is mainly used for low
The recycling of the grade energy, the external output mechanical work of expanding machine can drive electrical power generators, can also directly drive machinery and set
It is standby.Expanding machine is named with compressor according to use condition or function difference, and the use condition of compressor is driven by power
Dynamic, its function is by low-pressure gas boil down to gases at high pressure；The use condition of expanding machine is to be passed through gases at high pressure, is obtained from outlet
Low-pressure gas, and drive rotor rotates, its function is outside output power.
Expanding machine is generally divided into two classes by operation operating mode：A kind of is the expanding machine that can be externally done work with gas velocity
（Such as：Turbo-expander）, another kind is that the expanding machine externally to do work is expanded in equipment variable volume with gas（Such as：Piston type
Expanding machine, screw type expansion machine, rotary vane type expanding machine etc.）.
Wherein, rotary tableting machine includes rotary vane type compressor and rotary vane type expanding machine, and existing rotary vane type expanding machine includes cylinder, vapour
Blade rotor, the axle center of the axis deviation cylinder of blade rotor are installed, blade is provided with multiple axial directions on rotor outer circle week in cylinder
Rotor slot, be placed with the blade radially slided in rotor slot.Due to the eccentric configuration in the cylinder of blade rotor, cylinder and rotation
The spatial volume that piece rotor outer circle surface is formed is asymmetric, wherein having the spatial volume of a segmental arc narrow and relatively another segmental arc
Spatial volume is roomy.In blade rotor rotation process, blade is acted on by centrifugal force, and blade is stretched out out of rotor slot is fitted in cylinder
Inner wall, multiple small chambers are separated into by asymmetric space, and the small chamber volume positioned at narrow space is smaller, and positioned at the small of wide space
The volume of chamber is larger.Since blade rotor rotates, the location of blade is constantly changing, and the volume of each small chamber is also constantly changing
Become, the pressure of small intracavity gas changes as volume changes.So additionaling power driving blade rotor realizes air pressure increase,
Gas compression function is completed at this time, or is passed through drive of high-pressure gas blade rotor and realizes gas pressure reduction, completes gas at this time
Expansion function.
The expansion ratio of existing major part expanding machine is according to preferable operating condition design, in expanding machine operation, because of some energy
Be fed with fluctuating, when expander inlet gas operating mode (including pressure and temperature) change or exit gas operating mode (including pressure
Power and temperature), mismatched with original expansion ratio, will result in expansion and the generation of deficient expansion status.Expander inlet gas
When pressure is less than design pressure higher than design pressure or outlet gas pressure, it may occur that owe expansion；Expander inlet gas pressure
When being higher than design pressure less than design pressure or outlet pressure of expansion machine, it may occur that cross and expand.Both the above situation can all cause
Efficiency of expander reduces.
It is therefore desirable to a kind of new expanding machine is designed, to overcome drawbacks described above existing for existing expanding machine.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of adjustable rotary vane type expanding machine of expansion ratio, pass through gear
Structure adjusts the degree of eccentricity of rotor and cylinder, thus play adjust rotary vane type expander than effect.
The technical solution adopted by the present invention to solve the technical problems is：There is provided a kind of expansion ratio adjustable rotary vane type expansion
Machine, including cylinder and cylinder cover, the both ends of the cylinder are symmetrically installed with cylinder cover, and the cylinder internal is eccentric and axial
Rotor is installed, several radially movable blades, the rotor two are evenly arranged on the excircle of the rotor
The armature spindle at end is extend into the sliding block slided up and down inside cylinder cover, and servomotor execution is provided with the upside of the cylinder
Device, the servomotor actuator drive the sliding block at both ends to slide up and down by synchronous drive mechanism, and the bottom of the cylinder connects
Steam inlet pipe is connected to, gland steam exhauster is installed on the side circumferential side wall of the cylinder, wherein one end of armature spindle by universal joint and is moved
Power output shaft coupling is connected.
Further, the synchronous drive mechanism includes the synchronizing shaft and synchronizing shaft two being connected with servomotor actuator
End is disposed with execution screw rod vertically, and the upper end of the execution screw rod is connected by worm and gear component with synchronizing shaft, the execution screw rod
Lower end be connected with corresponding sliding block screw thread.
Further, two guide rails are vertically installed, the sliding block is along on guide rail on the side wall of the cylinder cover
Lower slider.
Further, the end part seal that sliding block and execution screw rod are covered together is installed on the outside of the cylinder cover
Shell, is provided with the middle part capsul for covering synchronizing shaft and cylinder part outer wall on the outside of the servomotor actuator.
Further, on the side wall of the steam inlet pipe by supplementary live steam pipe with cylinder and side wall that gland steam exhauster is opposite
It is connected, solenoid valve is installed on the supplementary live steam pipe.
Further, the position being connected on the side wall of the cylinder with gland steam exhauster is equipped with two diagonally disposed left and right phases
To steam discharge stitch.
Further, the bottom that the sliding slot of blade is disposed with the rotor passes through steaming hole and the lateral wall phase of rotor
Connection.
Further, the one end being in contact on the blade with the side wall of cylinder is arc-shaped contact jaw.
Further, exhaust steam pressure transmitter is installed on the gland steam exhauster, is provided with the side wall of the cylinder
Vapour cavity pressure transmitter.
Further, vertical axis hole is provided with the middle part of the cylinder cover to pass through and slide up and down for armature spindle.
Beneficial effect：It is compact-sized reasonable the present invention relates to a kind of adjustable rotary vane type expanding machine of expansion ratio, have following
Advantage：（1）By the degree of eccentricity of bidirectional modulation rotor in the cylinder, change expansion ratio, ensure rotary vane type expansion when operating mode changes
The thermal efficiency of machine；（2）Be provided with end part seal shell and middle part capsul by whole body can leakage point seal, ensure whole
Body air-tightness is good；（3）Universal joint one end and rotor axis connection, the other end are connected with power output shaft coupling, same to adapt to
Mechanical energy successfully can be passed to power output shaft coupling by armature spindle when heart degree changes；（4）Blade is contacted with cylinder inner wall
Hold as arc-shaped, be more advantageous to blade and form liquid film with cylinder inner wall lubricant and reduce to wear；（5）Auxiliary equipped with provided with electromagnetic valve
Start steam inlet pipe, easy to rotary vane type expanding machine starting under load.
Brief description of the drawings
Fig. 1 is the half-sectional structure chart of main view of the present invention；
B-B direction sectional structure chart when Fig. 2 is the larger expansion ratio of Fig. 1；
B-B direction sectional structure chart when Fig. 3 is the smaller expansion ratio of Fig. 1；
Fig. 4 is the A-A of Fig. 1 to sectional structure chart；
Fig. 5 is the cylinder cover figure of the present invention；
Fig. 6 is the local structural graph of rotor of the present invention；
Fig. 7 is that the steam discharge of cylinder of the present invention sews cloth and puts schematic diagram.
Reference numeral：1. minimum vapour chamber, 2. maximum vapour chambers, 3. rotors, 4. cylinder covers, 5. blades, 6. cylinders, 7.
Sliding block, 8. end part seal shells, 9. steam discharges seam, 10. servomotor actuators, 11. middle part capsuls, 12. synchronizing shafts, 13.
Execution screw rod, 14. universal joints, 15. armature spindles, 16. power output shaft couplings, 17. steam inlet pipes, 18. gland steam exhausters, 19.
Guide rail, 20. vertical axis holes, 21. vapour cavity pressure transmitters, 22. exhaust steam pressure transmitters, 23. steaming holes, 24. arc-shapeds
Contact jaw, 25. supplementary live steam pipes.
Embodiment
With reference to specific embodiment, the present invention is further explained.It is to be understood that these embodiments are merely to illustrate the present invention
Rather than limit the scope of the invention.In addition, it should also be understood that, after reading the content taught by the present invention, people in the art
Member can make various changes or modifications the present invention, and such equivalent forms equally fall within the application the appended claims and limited
Scope.
As shown in figs. 1-7, embodiments of the present invention are related to a kind of adjustable rotary vane type expanding machine of expansion ratio, including cylinder
6 and cylinder cover 4, the both ends of the cylinder 6 are symmetrically installed with cylinder cover 4, and the inside of cylinder 6 is eccentric and is axially installed with
Rotor 3, is evenly arranged several radially movable blades 5,3 both ends of rotor on the excircle of the rotor 3
Armature spindle 15 extend into inside cylinder cover 4 in the sliding block 7 slided up and down, the upside of the cylinder 6 is provided with servomotor
Actuator 10, the servomotor actuator 10 drive the sliding block 7 at both ends to slide up and down by synchronous drive mechanism, the cylinder
6 bottom is connected with steam inlet pipe 17, and the one of gland steam exhauster 18, wherein armature spindle 15 is provided with the side circumferential side wall of the cylinder 6
End is connected by universal joint 14 with power output shaft coupling 16.
The synchronous drive mechanism includes 12 both ends of synchronizing shaft 12 and synchronizing shaft being connected with servomotor actuator 10
Vertical be disposed with performs screw rod 13, and the upper end of the execution screw rod 13 is connected by worm and gear component with synchronizing shaft 12, the execution
The lower end of screw rod 13 is connected with corresponding 7 screw thread of sliding block, as the good synchronous drive mechanism of synchronism, using synchronizing shaft 12 come
The execution screw rod 13 on driving both sides synchronizes rotation, can guarantee that the synchronization lifting of sliding block 7, the spiral shell of the worm screw at 12 both ends of synchronizing shaft
Direction difference is revolved, can so offset the axial force at both ends, improves the stationarity of transmission.
Two guide rails 19 are vertically installed, the sliding block 7 glides along on guide rail 19 on the side wall of the cylinder cover 4
It is dynamic, ensure the stability that sliding block 7 slides.
The outside of the cylinder cover 4 is provided with the end part seal shell 8 for covering sliding block 7 and execution screw rod 13 together, institute
The outside for the servomotor actuator 10 stated is provided with the middle part capsul 11 for covering synchronizing shaft 12 and 6 outer wall of cylinder,
By end part seal shell 8 and middle part capsul 11 can by whole body can leakage point seal, prevent refrigerant leakage.
By in supplementary live steam pipe 25 and cylinder 6 and gland steam exhauster on the side wall of the steam inlet pipe 17（18）Opposite side wall
Be connected, solenoid valve be installed on the supplementary live steam pipe 25, when expanding machine starts can with steam inlet pipe 17 at the same time into vapour,
Multiple blades are promoted, expanding machine is normally started loaded when.
The row that with position that gland steam exhauster 18 is connected to be equipped with two diagonally disposed left and right on the side wall of the cylinder 6 opposite
Vapour seam 9, diagonally disposed steam discharge seam 9 can make blade 5 rub vertically uniformly, reduce local relative to original straight steam discharge seam
Abrasion.
The bottom that the sliding slot of blade 5 is disposed with the rotor 3 is connected by steaming hole 23 with the lateral wall of rotor 3
It is logical, prevent that negative pressure of vacuum or compressed gas are formed blade 5 on bottom during stretching motion in the sliding slot of rotor 3, so as to influence blade 5
Stretching motion.
The one end being in contact on the blade 5 with the side wall of cylinder 6 is arc-shaped contact jaw 24, be more advantageous to blade with
Cylinder inner wall lubricant forms liquid film and reduces abrasion.
Exhaust steam pressure transmitter 22 is installed on the gland steam exhauster 18, vapour chamber is installed on the side wall of the cylinder 6
Pressure transmitter 21, pressure transmitter in general sense is mainly by load cell（Also referred to as pressure sensor）, survey
Measure circuit and process connector three parts composition.It can be by physical pressures such as gas that load cell is experienced, liquid
Parameter is transformed into the electric signal of standard（Such as 4 ~ 20mADC）, to supply the secondary meters such as indicator alarm, recorder, adjuster
Measure, indicate and procedure regulation.
The middle part of the cylinder cover 4 is provided with vertical axis hole 20 and passes through and slide up and down for armature spindle 15.
As a kind of embodiment of the present invention, body inverse time on the basis of Fig. 2-3 during rotary vane type expanding machine actual installation
Pin rotates 30 degree, because gravity has more blades in expansion side fitting cylinder wall formation vapour chamber during ensureing static, easy to start,
Under original state, minimum vapour chamber 1 is formed in the lower end of cylinder 6, maximum vapour chamber 2 is formed in the top.
During rotary vane type expanding machine No Load Start：The working substance steam of high temperature and pressure enters minimum vapour chamber 1 by steam inlet pipe 17, because
The blade extension elongation of eccentric setting then minimum 1 both sides of vapour chamber in cylinder 6 of rotor 3 is different, then stretches out longer 5 stress of blade
Greatly, stretching is small compared with short 5 stress of blade, and working substance steam then promotes blade and rotor 3 to be rotated towards the direction for stretching out longer blade, rotor
Then vapour cavity volume gradually expands for 3 rotations, working substance steam expansion externally acting.3 rotary speed of rotor owns when reaching certain numerical value
The centrifugal force that blade produces overcomes blade self gravitation to be fitted on cylinder wall, if rotor 3 forms net gas with blade 5 with cylinder 6
Chamber, enters vapour chamber expansion work, drive rotor 3 rotates one by one by steam inlet pipe 17, the working substance steam of high temperature and pressure one by one.Working medium
Steam expansion and rotate to after maximum vapour chamber 2, then acted on into 18 region of gland steam exhauster, the at this moment rotation of rotor 3 with cylinder wall
Lower blade is gradually retracted in rotor slot, and vapour cavity volume reduces, and the working substance steam of low-temp low-pressure is entered by the steam discharge seam 9 of cylinder wall
Gland steam exhauster 18 exclude expanding machine outside, after vapour cavity volume narrows down to minimum, but begin through steam inlet pipe 17 start it is next acting follow
Ring.
During rotary vane type expanding machine starting under load：In addition to above-mentioned steam-operating process, the auxiliary for also needing to open provided with electromagnetic valve is into vapour
Pipe 25, allows the working substance steam of high temperature and pressure to enter the starting torque that more vapour chambers produce bigger, when 3 rotating speed of rotor reaches certain speed
Degree, all blades of blade group 5 can be bonded cylinder wall completely, then close supplementary live steam pipe 25, rotary vane type expansion with solenoid valve
Machine starting under load is completed.
So-called " high temperature and pressure " and " low-temp low-pressure " are working medium in expander inlet and the comparison of outlet, it is not definitely high with
It is low.
When working medium promotion rotary vane type expanding machine is continuously run, in the vapour cavity pressure transmitter that the maximum vapour chamber 2 of cylinder 6 is installed
The pressure value of 21 detections is sent into the industry controls such as PLC together with the pressure value that the exhaust steam pressure transmitter 22 installed on gland steam exhauster 18 detects
Machine.
When the pressure value of maximum vapour chamber 2 is less than the pressure value of gland steam exhauster 18 and exceedes required scope, working medium crosses expansion, PLC
Start servomotor actuator 10 to rotate forward, driving synchronizing shaft 12 rotates forward, and the driving of synchronizing shaft 12 performs screw rod 13 and rotates forward, and passes through screw thread
Two sliding blocks 7 with bearing are synchronously up moved, two sliding blocks 7 then drive rotor 3 is synchronous up to move by armature spindle 15,
At this moment the degree of eccentricity of the rotor 3 in cylinder 6 diminishes, and minimum 1 volume of vapour chamber becomes larger, and maximum 2 volume of vapour chamber diminishes, and expansion ratio becomes
Small, the pressure value rise of maximum vapour chamber 2 and the pressure value of gland steam exhauster 18 return to working medium in required scope and cross swelling disappearance,
It is minimum vapour chamber 1 before adjusting and maximum 2 ratio of vapour chamber with reference to Fig. 2, Fig. 3 is minimum vapour chamber 1 after adjusting and maximum 2 ratio of vapour chamber.
When the pressure value of maximum vapour chamber 2 exceedes required scope higher than the pressure and value of gland steam exhauster 18, working medium owes to expand, then
Direction is adjusted to adjust on the contrary, expansion ratio becomes larger with the above.Adjusted more than, avoid the excessively swollen of working medium in rotary vane type expanding machine
Swollen or deficient expansion status occurs, and ensures the thermal efficiency of rotary vane type expanding machine.
During rotary vane type expanding machine starts, the above of being failure to actuate is adjusted, shaping modes of being allowed for access after start completion, rotary vane type
After expanding machine is shut down, PLC controls rotor 3 to start easy to next time in 90% position of maximum expansion ratio.
When adjusting rotor 3 and the degree of eccentricity of cylinder 6 changes, the concentricity of power output shaft coupling 16 and armature spindle 15
Accordingly change, centre connected by universal joint 14, with adapt to concentricity change when armature spindle 15 mechanical energy pass to it is dynamic
Power exports shaft coupling 16, and power output shaft coupling 16 here can be magnetic coupling, to ensure the gas of rotary vane type expanding machine
Close property.
The present invention adjusts the degree of eccentricity of rotor and cylinder by linkage mechanism, so that it is swollen to play adjusting rotary vane type expanding machine
The effect of swollen ratio.
Claims (9)
1. a kind of adjustable rotary vane type expanding machine of expansion ratio, including cylinder（6）And cylinder cover（4）, the cylinder（6）Both ends
It is symmetrically installed with cylinder cover（4）, the cylinder（6）Inside is eccentric and is axially installed with rotor（3）, the rotor（3）'s
Several radially movable blades are evenly arranged on excircle（5）, it is characterised in that the rotor（3）Both ends turn
Sub- axis（15）It extend into cylinder cover（4）The sliding block that inside slides up and down（7）Interior, described cylinder（6）Upside servo is installed
Electric motor actuator（10）, the servomotor actuator（10）The sliding block at both ends is driven by synchronous drive mechanism（7）Slide up and down,
The cylinder（6）Bottom be connected with steam inlet pipe（17）, the cylinder（6）Side circumferential side wall on gland steam exhauster is installed
（18）, wherein armature spindle（15）One end pass through universal joint（14）With power output shaft coupling（16）It is connected.
2. the adjustable rotary vane type expanding machine of expansion ratio according to claim 1, it is characterised in that：The Synchronous Transmission machine
Structure includes and servomotor actuator（10）The synchronizing shaft of connection（12）And synchronizing shaft（12）Both ends are disposed with execution screw rod vertically
（13）, the execution screw rod（13）Upper end pass through worm and gear component and synchronizing shaft（12）It is connected, the execution screw rod（13）Under
End and corresponding sliding block（7）Screw thread is connected.
3. the adjustable rotary vane type expanding machine of expansion ratio according to claim 1, it is characterised in that：The cylinder cover（4）
Side wall on two guide rails are vertically installed（19）, the sliding block（7）Along guide rail（19）Slide up and down.
4. the adjustable rotary vane type expanding machine of expansion ratio according to claim 3, it is characterised in that：The cylinder cover（4）
Outside be provided with sliding block（7）With execution screw rod（13）The end part seal shell covered together（8）, the servomotor performs
Device（10）Outside be provided with synchronizing shaft（12）And cylinder（6）The middle part capsul that outer wall covers（11）.
5. the adjustable rotary vane type expanding machine of expansion ratio according to claim 1, it is characterised in that：The steam inlet pipe（17）
Side wall on pass through supplementary live steam pipe（25）With cylinder（6）Interior and gland steam exhauster（18）Opposite side wall is connected, this is aided in into vapour
Pipe（25）On solenoid valve is installed.
6. the adjustable rotary vane type expanding machine of expansion ratio according to claim 1, it is characterised in that：The cylinder（6）'s
On side wall with gland steam exhauster（18）The position being connected is equipped with the opposite steam discharge seam in two diagonally disposed left and right（9）.
7. the adjustable rotary vane type expanding machine of expansion ratio according to claim 1, it is characterised in that：The blade（5）On
With cylinder（6）One end for being in contact of side wall be arc-shaped contact jaw（24）.
8. the adjustable rotary vane type expanding machine of expansion ratio according to claim 1, it is characterised in that：The gland steam exhauster（18）
On exhaust steam pressure transmitter is installed（22）, the cylinder（6）Side wall on vapour cavity pressure transmitter is installed（21）.
9. the adjustable rotary vane type expanding machine of expansion ratio according to claim 1, it is characterised in that：The cylinder cover（4）
Middle part be provided with vertical axis hole（20）For armature spindle（15）Pass through and slide up and down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711253978.9A CN107956514B (en) | 2017-12-02 | 2017-12-02 | Expansion ratio adjustable rotary vane expander |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711253978.9A CN107956514B (en) | 2017-12-02 | 2017-12-02 | Expansion ratio adjustable rotary vane expander |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107956514A true CN107956514A (en) | 2018-04-24 |
| CN107956514B CN107956514B (en) | 2024-06-25 |
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ID=61963298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711253978.9A Active CN107956514B (en) | 2017-12-02 | 2017-12-02 | Expansion ratio adjustable rotary vane expander |
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| Country | Link |
|---|---|
| CN (1) | CN107956514B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN113864006A (en) * | 2020-06-30 | 2021-12-31 | 上海电气电站设备有限公司 | Steam turbine expansion sliding pin system and steam turbine |
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|---|---|
| CN107956514B (en) | 2024-06-25 |
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