CN106401665B

CN106401665B - High-power composite braking expanding machine

Info

Publication number: CN106401665B
Application number: CN201610394946.XA
Authority: CN
Inventors: 丁俊; 郝群
Original assignee: Sichuan Tai Bo Fluid Science And Technology Ltd
Current assignee: CHINA OIL BLUE OCEAN PETROLEUM TECHNOLOGY Inc
Priority date: 2016-06-02
Filing date: 2016-06-02
Publication date: 2017-11-21
Anticipated expiration: 2036-06-02
Also published as: CN106401665A

Abstract

The present invention relates to a kind of high-power composite braking expanding machine, it includes expanding machine main shaft, expanding end and blower fan dog point, expanding machine main shaft includes main shaft and spindle casing, main shaft both ends are rotatablely connected by bearing and spindle casing both ends respectively, and it is connected respectively with expanding end and blower fan dog point, expanding machine main shaft is provided with least one main shaft oil brake, main shaft oil brake includes loop system kinetoplast and brake body inflow pipeline, main shaft is rotatablely connected with loop system kinetoplast, ring wall is provided with the annular stop oil groove connected with brake body inflow pipeline in annular stop body, spindle casing is provided with fuel feeding oil return opening；Compared with prior art, product comprehensive utilization main shaft oil brake of the present invention and the braking of blower fan dog point, when Cryo Equipment technological design can not use booster brake expanding machine to need high-power braking effect again, expanding end large load operation demand can be better met, braking power can be adjusted up to 200kw according to expanding end actual motion load.

Description

High-power composite braking expanding machine

Technical field

The present invention relates to turbo-expander field, more particularly to a kind of expanding machine of non pressurized mode of braking.

Background technology

Turbo-expander is to realize a kind of effectively machinery close to adiabatic isentropic expansion process, and gas working medium is in expansion process Low temperature, while external work done are obtained, therefore the application for expanding machine includes two effects：Obtain low temperature cold and recover energy (external work)；No matter any coaxial other end of expanding machine is required for dog point, and the work(of expanding machine output is absorbed simultaneously Control expanding machine running speed.

At present, turbo-expander dog point has turbocompressor (supercharging), generator, oil brake, blower fan brake etc., Typically making full use of for energy, it as dog point is booster brake that can all use turbocompressor, still, part Cryo Equipment There is no suitable process gas supercharging to recover energy to brake expanding machine during particularity flow scheme design, can only now use oil brake Or blower fan brakes this energy expenditure type mode of braking.

However, blower fan braking is to be rotated to drive impeller of blower rotation by coaxial expanding end, air suction is empty directly from environment Gas, air is directly discharged into after pressure is improved again, adjusts the valve on export pipeline and change inspiratory capacity and pressure at expulsion to adjust Brake load, usual braking power is in below 50kw, even if changing expanding end type size, maximum brake power also can only achieve 100kw；Oil brake is the lubrication for being passed through certain pressure with the braked wheel of axis suspension one between rotor and stator in expanding end Oil, the work(that expanding end exports is converted into heat by rubbing, is taken in oil cooler and cooled down by lubricating oil, adjusts fuel feeding oil mass The brake load and rotating speed of turbo-expander can be changed with oil pressure, although compared with blower fan is braked, have that noise is small, volume The features such as small, easy to operate, adjustable range is wide, but braking power is general also in below 50kw；It can be seen that either blower fan is braked Or oil brake is all limited by braking power, all it is not used to brake high turbine expanding machine, part low temperature dress can not be met The particularity flow scheme design put.

The content of the invention

The technical problems to be solved by the invention are to provide one kind can not use booster brake in Cryo Equipment technological design Mode expanding machine needs high-power braking effect again in the case that, the big of expanding end large load operation demand can be better met Power composite braking expanding machine.

The technical scheme that the present invention solves above-mentioned technical problem is as follows：

A kind of high-power composite braking expanding machine, it includes expanding machine main shaft and is co-axially located at the expanding machine main shaft The expanding end and blower fan dog point at both ends, the expanding machine main shaft include main shaft and are centered around the main shaft machine of the main shaft surrounding Shell, the both ends of the main shaft are respectively by expanding end bearing and braking end bearing and the both ends axial rotation company of the spindle casing Connect, and be connected respectively with the expanding end and the blower fan dog point, the expanding machine main shaft is provided with least one master Shafting oil brake, the main shaft oil brake include the loop system being coaxially disposed in the spindle casing and with the main shaft Kinetoplast and the brake body inflow pipeline outside the spindle casing, the inwall of the loop system kinetoplast and the spindle casing It is fixedly connected, the main shaft is connected with the loop system kinetoplast axial rotation, is coaxially set on the internal ring wall of the loop system kinetoplast Annular stop oil groove is equipped with, the brake body inflow pipeline is fixedly connected through the spindle casing with the loop system kinetoplast, And extend to inside the annular stop body and connected with the annular stop oil groove, it is additionally provided with the spindle casing and the master The fuel feeding oil return opening of axle casing internal connection.

Compared with prior art, the beneficial effects of the invention are as follows：

Product of the present invention sets up main shaft oil brake, and using main shaft as rotor, loop system kinetoplast is provided with system as stator Kinetoplast inflow pipeline and annular stop oil groove, relative motion, which produces, between rotor and stator rubs, by brake body oil inlet pipe Road and annular stop oil groove are passed through the brake oil of certain pressure, can preferably ensure to have enough brake oil flows braking and Radiate, can not only rely on the viscous force of itself brake in gap of the brake oil between rotor and stator, and oil can be passed through Heat caused by consumption friction is taken away so as to reaching the purpose of braking in road loop, moreover it is possible to ensure braking oil temperature will not superelevation and damage Bad oil product and part, meanwhile, it is blower fan dog point with the coaxial other end of expanding end, when expanding end gas expansion promotes main shaft high During speed rotation, blower fan dog point can suck air from entrance and be compressed, and consume the energy coaxially exported, the two Associated brake The service requirement of high-power expansion unit can be better met, so can not use booster brake side in Cryo Equipment technological design Formula expanding machine needs high-power braking effect again in the case that, expanding end large load operation demand can be better met, is expanded Machine braking power can reach 200kw, and by increasing and decreasing the quantity of main shaft oil brake on main shaft, the system of expanding machine can also be adjusted Dynamic power, so as to meet the actual motion load under the different situations of expanding end, more convenient to use, the scope of application is wider.

On the basis of above-mentioned technical proposal, the present invention can also do following improvement.

As a kind of preferred embodiment of the present invention, the expanding machine main shaft, which is provided with, to be used to measure expanding machine rotating speed Speed test mouth and the vibration measuring mouth for measuring expanding machine vibration state.

Beneficial effect using above-mentioned preferred scheme is：More it is convenient for measuring expanding machine rotating speed and vibration state.

As another preferred embodiment of the present invention, it has been provided between the expansion end bearing and the expanding end close The expanding end axle envelope of envelope effect, the dog point axle to seal is provided between the braking end bearing and the blower fan dog point Envelope.

Beneficial effect using above-mentioned preferred scheme is：By axle envelope by spindle casing inner chamber respectively with expanding end, braking End is separated, and Working medium gas significantly more efficient can be avoided to enter spindle casing inner chamber from expanding end, avoid air from entering from dog point Enter main shaft chassis cavity, avoid the lubricating oil on brake oil or bearing from flowing into expanding end or dog point from spindle casing inner chamber, from And preferably ensure to expand the stability and reliability of unit operation.

As the present invention another preferred embodiment, the expanding end include expanding machine spiral case, expansion impeller and Slider disc can be prevented stuck and effective adjustable nozzle for eliminating glade plane space between slider disc and nozzle vane, the adjustable nozzle Be coaxially disposed from outside to inside in the expanding machine spiral case relative to the main shaft with the expansion impeller, the adjustable nozzle with The inwall of the expanding machine spiral case is fixedly connected, the expanding machine spiral case be provided with for Working medium gas disengaging expander inlet and Expander outlet, the blower fan dog point include blower fan exhaust volute and the blower fan leaf in the blower fan exhaust volute Wheel, the blower fan exhaust volute are provided with braking blower import and braking blower outlet for air disengaging, the spindle casing Both ends be fixedly connected respectively with the expanding machine spiral case and the blower fan exhaust volute, the both ends of the main shaft respectively with it is described Expansion impeller connects with the draught fan impeller coaxial transmission.

Beneficial effect using above-mentioned preferred scheme is：Structure is compacter, and the manufacturing is simpler, and input cost is more Low, braking effect is more preferable.

As another preferred embodiment of the present invention, it is additionally provided with and the draught fan impeller in the blower fan exhaust volute Corresponding blower fan air-breathing guide cover, the blower fan air-breathing guide cover is cylindrical in shape, and is coaxially disposed in the draught fan impeller away from institute State the side of main shaft.

Beneficial effect using above-mentioned preferred scheme is：Blower fan dog point is compressed more square from entrance suction air Just, more efficient, the efficiency for the energy that consumption coaxially exports is also higher, and braking effect is more preferable.

As another preferred embodiment of the present invention, the adjustable nozzle includes that the more of nozzle passage area can be changed Individual nozzle vane, positioning disk annular in shape, slider disc annular in shape and air deflector cover plate annular in shape, the air deflector cover plate, The slider disc and the positioning disk are coaxially disposed and are mutually matched, and the air deflector cover plate and the positioning disk are located at institute respectively State the both sides of slider disc, all the nozzle vanes are respectively positioned between the slider disc and the positioning disk, and along the positioning Disk circumferencial direction is uniformly distributed, and each nozzle vane side is brought into close contact and is rotatablely connected with the positioning disk, opposite side It is brought into close contact and is slidably connected with the slider disc, the slider disc is vertically provided with close to the side of the air deflector cover plate can band The trundle that the slider disc does movement in a curve is moved, the air deflector cover plate is provided with transmission corresponding with the trundle and slided Groove, the trundle are passed from the transmission chute and can slided in the transmission chute；The air deflector cover plate is close to institute The side and the slider disc for stating slider disc are coaxially arranged with what can mutually be fastened and connected close to the side of the air deflector cover plate Cover plate bulge loop and slider disc bulge loop, and the air deflector cover plate be along the circumferential direction additionally provided with close to the side of the slider disc it is multiple The elastic force collision bead of the slip disc side can be pressed on, the outer shroud edge of the air deflector cover plate is provided with to the slider disc and determined The cover sidewall of position disk extension, the cover sidewall cover the slider disc and with the positioning disk is removable is fixedly connected.

Beneficial effect using above-mentioned preferred scheme is：Adjustable nozzle structure is compacter, and manufacture assembling is simpler, throws It is lower to enter cost, use is more convenient, and the elastic force collision bead on the inside of air deflector cover plate can be pressed on side of the slider disc close to it, bullet The elastic force of power collision bead can press to slider disc nozzle vane, and nozzle vane may proceed to press to positioning disk so that the two of nozzle vane Side is adjacent to slider disc and positioning disk due to compression, so as to eliminate the glade plane space between slider disc and nozzle vane, all the time will Glade plane space is retained between air deflector cover plate and slider disc, so can be achieved with the zero clearance of nozzle flow passage component, both effectively The internal leakage of nozzle segment is reduced, lifts runner efficiency, and effectively avoids occurring between slider disc and air deflector cover plate stuck Situation, it is ensured that expand the stability and reliability of unit.

As another preferred embodiment of the present invention, positioning hole is equipped with the middle part of each nozzle vane, its One end side away from the positioning disk inner ring is vertically provided with rotational pin, and multiple points are along the circumferential direction provided with the positioning disk The alignment pin not matched with the corresponding positioning hole, multiple can drive respectively correspondingly is along the circumferential direction provided with the slider disc The rotational pin does the sliding groove of movement in a curve, and one end of each nozzle vane passes through the corresponding alignment pin and positioning hole It is rotatablely connected with the positioning disk, the other end is slidably connected by the corresponding rotational pin and sliding groove with the slider disc.

Beneficial effect using above-mentioned preferred scheme is：Trundle in slider disc can be picked out by pull bar, so as to profit The movement in a curve of slider disc is realized with the up and down motion of the pneumatic actuators such as pneumatic diaphragm control valve, the alignment pin on positioning disk It can only make movement in a curve around it with limits nozzle blade, the rotational pin can on such nozzle vane passes through in slider disc Sliding groove drives nozzle vane to rotate, so as to realize the aperture of nozzle passage, the significantly more efficient modulability for ensureing adjustable nozzle Can, it is ensured that expand the stability and reliability of unit.

As another preferred embodiment of the present invention, the cover plate bulge loop at the snapping of the slider disc bulge loop with setting There is the centring ring that can ensure that the slider disc spin stabilization and will not deflect.

Beneficial effect using above-mentioned preferred scheme is：The interior outer rim of centring ring can effectively with air deflector cover plate and cunning Moving plate is engaged, and ensures that circumferential position of the slider disc in rotary course is constant, it is ensured that slider disc spin stabilization, will not occur partially Turn.

As another preferred embodiment of the present invention, the cover plate bulge loop at the snapping of the slider disc bulge loop with setting There is sealing ring.

Beneficial effect using above-mentioned preferred scheme is：The significantly more efficient internal leakage for reducing nozzle segment, lifts runner Efficiency.

As another preferred embodiment of the present invention, the surface of the nozzle vane is provided with one layer of lubricating layer, The slider disc is provided with one layer close to the side of the nozzle vane and/or the positioning disk close to the side of the nozzle vane Lubricant layer.

Beneficial effect using above-mentioned preferred scheme is：Contacted between increase slider disc and/or positioning disk and nozzle vane The lubricity in face and the lubricity of nozzle vane both sides rubbing surface, reduce frictional force, improve slider disc and nozzle vane rotation When andfrictional conditions, effectively avoid between nozzle vane and slider disc, nozzle vane and positioning disk occur plucking, pull in addition block Dead phenomenon, ensure the regulation performance of adjustable nozzle, so that it is guaranteed that expansion unit stability, reliability.

Brief description of the drawings

Fig. 1 is the axial section structural representation of product of the present invention；

Fig. 2 be product of the present invention in terms of dog point to side cross-sectional view during expanding end；

Fig. 3 is axial section structural representation of the expanding machine main shaft along B-B directions in Fig. 2；

Fig. 4 is a kind of positive half section structure diagram of scheme of adjustable nozzle in the present invention；

Fig. 5 is side cross-sectional view of the product along A-A directions in Fig. 4；

In accompanying drawing, the list of parts representated by each label is as follows：

1st, expanding machine main shaft, 2, expanding end, 3, blower fan dog point, 4, main shaft, 5, expansion end bearing, 6, braking end bearing, 7th, loop system kinetoplast, 8, annular stop oil groove, 9, brake body inflow pipeline, 10, fuel feeding oil return opening, 11, expanding machine spiral case, 12, Adjustable nozzle, 13, expansion impeller, 14, expanding end axle envelope, 15, expander inlet, 16, expander outlet, 17, dog point axle envelope, 18th, draught fan impeller, 19, blower fan air-breathing guide cover, 20, braking blower import, 21, braking blower outlet, 22, air deflector cover plate, 23rd, slider disc, 24, positioning disk, 25, nozzle vane, 26, rotational pin, 27, alignment pin, 28, trundle, 29, transmission chute, 30, Elastic force collision bead, 31, sealing ring, 32, centring ring.

Embodiment

The principle and feature of the present invention are described below in conjunction with accompanying drawing, the given examples are served only to explain the present invention, and It is non-to be used to limit the scope of the present invention.

Embodiment

As shown in Figures 1 to 5, a kind of high-power composite braking expanding machine, it includes expanding machine main shaft 1 and is coaxially disposed Expanding end 2 and blower fan dog point 3 at the both ends of expanding machine main shaft 1, the expanding machine main shaft 1 include main shaft 4 and surrounded In the spindle casing of the surrounding of main shaft 4, the both ends of the main shaft 4 are respectively by expanding end bearing 5 and braking end bearing 6 and institute The both ends for stating spindle casing are axially rotatablely connected, and are connected respectively with the expanding end 2 and the blower fan dog point 3, institute State and be preferably provided the expanding end axle envelope 14 to seal, the braking end bearing between expansion end bearing 5 and the expanding end 2 The dog point axle envelope 17 to seal is preferably provided between 6 and the blower fan dog point 3；

Wherein, the expanding end 2 can include expanding machine spiral case 11, expansion impeller 13 and can prevent that slider disc 23 is stuck And the adjustable nozzle 12 of glade plane space between slider disc 23 and nozzle vane 25 is effectively eliminated, the adjustable nozzle 12 and described swollen Swollen impeller 13 is coaxially disposed in the expanding machine spiral case 11 from outside to inside relative to the main shaft 4, the adjustable nozzle 12 with The inwall of the expanding machine spiral case 11 is fixedly connected, and the expanding machine spiral case 11 is provided with the expanding machine passed in and out for Working medium gas and entered Mouth 15 and expander outlet 16, the blower fan dog point 3 can include blower fan exhaust volute and be vented snail positioned at the blower fan Draught fan impeller 18 in shell, the blower fan exhaust volute is provided with to be gone out for the braking blower import 20 of air disengaging and braking blower Mouth 21, the both ends of the spindle casing are fixedly connected with the expanding machine spiral case 11 and the blower fan exhaust volute respectively, described The both ends of main shaft 4 are connected with the expansion impeller 13 and the coaxial transmission of the draught fan impeller 18 respectively, the blower fan exhaust volute Inside it is preferably provided with the 18 corresponding vaneless diffuser of draught fan impeller and is inhaled with the 18 corresponding blower fan of draught fan impeller Gas guide cover 19, the blower fan air-breathing guide cover 19 is cylindrical in shape, and is coaxially disposed in the draught fan impeller 18 away from the main shaft 4 Side；

The expanding machine main shaft 1 is provided with least one main shaft oil brake, and the main shaft oil brake includes being located at institute State in spindle casing and the loop system kinetoplast 7 being coaxially disposed with the main shaft 4 and the brake body outside the spindle casing Inflow pipeline 9, the loop system kinetoplast 7 are fixedly connected with the inwall of the spindle casing, the main shaft 4 and the annular stop The axial rotation of body 7 connects, and is coaxially arranged with annular stop oil groove 8 on the internal ring wall of the loop system kinetoplast 7, the brake body enters Oil-piping 9 is fixedly connected through the spindle casing with the loop system kinetoplast 7, and is extended to inside the loop system kinetoplast 7 Connected with the annular stop oil groove 8, the fuel feeding oil return with being connected inside the spindle casing is additionally provided with the spindle casing Mouth 10；It may be provided for measuring the speed test mouth of expanding machine rotating speed and for measuring expanding machine on the expanding machine main shaft 1 The vibration measuring mouth of vibration state.

During product startup optimization of the present invention, Working medium gas is entered in expanding machine spiral case 11 from expander inlet 15, then is led to After crossing adjustable nozzle 12, expansion impeller 13 is promoted to rotate, post-expansion gas pressure reduces, and temperature reduces, by expander outlet 16 Enter the next equipment of process unit；

And before starting, the auxiliary equipment fueller of expanding machine has started to carry out expansion end bearing 5 and braking end bearing 6 Fuel feeding, and fuel feeding, expanding end after startup are carried out to the annular stop oil groove 8 on loop system kinetoplast 7 by brake body inflow pipeline 9 Bearing 5 and braking end bearing 6 form oil film and hold up main shaft 4, ensure the smooth running of main shaft 4, are passed through the oily meeting of annular stop oil groove 8 Loop system kinetoplast 7 is assigned to in the gap of main shaft 4, frictional heat is produced by the viscosity of brake oil to consume master under relative motion The rotation function of axle 4, the elevated deep fat of temperature returns to fueller through fuel feeding oil return opening 10 together with bearing oil, by supplying Oil cooler cools down on oily device；

At the same time, the blower fan dog point 3 of the coaxial other end of expanding machine also works simultaneously, in the gas expansion of expanding end 2 When promotion main shaft 4 rotates at a high speed, blower fan can suck air from braking blower import 20 and be compressed, and consume the energy coaxially exported Amount, air is discharged into after supercharging；

Product of the present invention can both be adjusted swollen by increasing and decreasing the quantity of main shaft oil brake or volume size on main shaft 4 The braking power of swollen machine, so as to meet the actual motion load under the different situations of expanding end 2, use is more convenient, the scope of application It is wider, wherein, when the quantity of main shaft oil brake is three, resultant effect is optimal；When main shaft oil brake is multiple, also Rotating speed can be coordinated to turn down oil-supply valve and reduce oil brake ability, or close the oil-supply valve of which part main shaft oil brake, So as to reduce brake load, meeting the actual motion load under the different situations of expanding end 2, adjustable range is wide, regulating measure is abundant, It is flexible.

In the present invention, the adjustable nozzle 12 can include that multiple nozzle vanes 25 of nozzle passage area can be changed, be in The positioning disk 24 of ring-type, slider disc 23 annular in shape and air deflector cover plate 22 annular in shape, the air deflector cover plate 22, the cunning Moving plate 23 and the positioning disk 24 are coaxially disposed and are mutually matched, and the air deflector cover plate 22 and the positioning disk 24 are located at respectively The both sides of the slider disc 23, whole nozzle vanes 25 are respectively positioned between the slider disc 23 and the positioning disk 24, and It is uniformly distributed along the circumferencial direction of positioning disk 24, each side of nozzle vane 25 is brought into close contact simultaneously with the positioning disk 24 Rotation connection, opposite side are brought into close contact and are slidably connected with the slider disc 23, such as：The middle part of each nozzle vane 25 Positioning hole is equipped with, its one end side away from the inner ring of positioning disk 24 is vertically provided with rotational pin 26, the positioning disk 24 On be along the circumferential direction provided with multiple alignment pins 27 to match respectively with the corresponding positioning hole, in the slider disc 23 circumferentially Direction is provided with multiple sliding grooves that the corresponding rotational pin 26 can be driven to do movement in a curve respectively, each nozzle vane 25 One end is rotatablely connected by the corresponding alignment pin 27 and positioning hole with the positioning disk 24, and the other end passes through the corresponding rotation Pin 26 and sliding groove are slidably connected with the slider disc 23；

The surface of the nozzle vane 25 is preferably provided one layer of lubricating layer, such as the polytetrafluoroethyl-ne that spray sintering forms Alkene layer, the slider disc 23 is close to the side of the nozzle vane 25 and/or the positioning disk 24 close to the nozzle vane 25 Side be preferably provided one layer of lubricant layer, such as dry film lubrication oxidant layer；

The slider disc 23 is vertically provided with close to the side of the air deflector cover plate 22 can drive the slider disc 23 to do arc The trundle 28 of line motion, the air deflector cover plate 22 are provided with transmission chute 29 corresponding with the trundle 28, the biography Dynamic pin 28 is passed from the transmission chute 29 and can slided in the transmission chute 29；

The air deflector cover plate 22 is close to the side of the slider disc 23 and the slider disc 23 close to the air deflector lid The side of plate 22 is coaxially arranged with the cover plate bulge loop and slider disc bulge loop that can be mutually fastened and connected, and the air deflector cover plate 22 leans on The side of the nearly slider disc 23 is along the circumferential direction additionally provided with multiple elastic force collision beads 30 for being pressed on the side of slider disc 23, Such as the air deflector cover plate 22 close to the side of the slider disc 23 it is peripherally disposed it is multiple respectively with multiple bullets Mounting groove corresponding to power collision bead 30, respectively in the corresponding mounting groove, the elastic force touches the elastic force collision bead 30, and 30 can be with The hollow cylinder and the spring inside the hollow cylinder closed including spheroid, the one end open other end, the spheroid By the blind end elastic connection of the spring and the hollow cylinder, described in one end stretching of the spheroid away from the spring The opening of hollow cylinder, the cover plate bulge loop is with being preferably provided sealing ring 31 at the snapping of the slider disc bulge loop and can ensure that institute The centring ring 32 stated the spin stabilization of slider disc 23 and will not deflected, the outer shroud edge of the air deflector cover plate 22 are provided with to institute State the cover sidewall that slider disc 23 and positioning disk 24 extend, the cover sidewall cover the slider disc 23 and with the positioning disk 24 removable are fixedly connected.

The adjustable nozzle 12 is compact-sized, and manufacture assembling is simple, cost is low, easy to use, the inner side of air deflector cover plate 22 Elastic force collision bead 30 can be pressed on side of the slider disc 23 close to it, and slider disc 23 can be pressed to nozzle leaf by the elastic force of elastic force collision bead 30 Piece 25, nozzle vane 25 may proceed to press to positioning disk 24 so that the both sides of nozzle vane 25 are adjacent to slider disc 23 due to compression With positioning disk 24, so as to eliminate the glade plane space between slider disc 23 and nozzle vane 25, glade plane space is retained in led all the time Flow between device cover plate 22 and slider disc 23, so can be achieved with the zero clearance of nozzle flow passage component, both effectively reduce nozzle segment Internal leakage, lift runner efficiency, and effectively avoid that stuck situation occurs between slider disc 23 and air deflector cover plate 22；

Meanwhile the trundle 28 in slider disc 23 can be picked out by pull bar, so as to utilize the gas such as pneumatic diaphragm control valve The up and down motion of dynamic executing agency realizes that slider disc 23 does movement in a curve, and the alignment pin 27 on positioning disk 24 can be with limits nozzle leaf Piece 25 can only make movement in a curve around it, and the can of rotational pin 26 on such nozzle vane 25 passes through the sliding groove in slider disc 23 Drive nozzle vane 25 to rotate, so as to realize the aperture of nozzle passage, the regulation performance of adjustable nozzle is effectively ensured, it is ensured that expansion The stability and reliability of unit.

It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power Profit requires rather than described above limits, it is intended that all in the implication and scope of the equivalency of claim by falling Change is included in the present invention, and any reference in claim should not be considered as to the involved claim of limitation.

The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and Within principle, any modification, equivalent substitution and improvements made etc., it should be included in the scope of the protection.

Claims

1. a kind of high-power composite braking expanding machine, it is characterised in that it includes expanding machine main shaft (1) and is co-axially located at institute State the expanding end (2) and blower fan dog point (3) at expanding machine main shaft (1) both ends, the expanding machine main shaft (1) include main shaft (4) with And the spindle casing of the main shaft (4) surrounding is centered around, the both ends of the main shaft (4) are respectively by expanding end bearing (5) and system The both ends of moved end bearing (6) and the spindle casing are axially rotatablely connected, and respectively with the expanding end (2) and the blower fan system Moved end (3) is connected, and the expanding machine main shaft (1) is provided with least one main shaft oil brake, the main shaft oil brake Including the loop system kinetoplast (7) being coaxially disposed in the spindle casing and with the main shaft (4) and positioned at the main shaft Brake body inflow pipeline (9) outside casing, the loop system kinetoplast (7) is fixedly connected with the inwall of the spindle casing, described Main shaft (4) is connected with loop system kinetoplast (7) axial rotation, is coaxially arranged with the internal ring wall of the loop system kinetoplast (7) Annular stop oil groove (8), the brake body inflow pipeline (9) are fixed with the loop system kinetoplast (7) through the spindle casing Connection, and extend to inside the loop system kinetoplast (7) and connected with the annular stop oil groove (8), on the spindle casing also Provided with the fuel feeding oil return opening (10) with being connected inside the spindle casing.

2. high-power composite braking expanding machine according to claim 1, it is characterised in that on the expanding machine main shaft (1) Provided with for measuring the speed test mouth of expanding machine rotating speed and vibration measuring mouth for measuring expanding machine vibration state.

3. high-power composite braking expanding machine according to claim 1, it is characterised in that it is described expansion end bearing (5) with The expanding end axle envelope (14) to seal, the braking end bearing (6) and the blower fan system are provided between the expanding end (2) The dog point axle envelope (17) to seal is provided between moved end (3).

4. the high-power composite braking expanding machine according to any one of claim 1-3, it is characterised in that the expanding end (2) include expanding machine spiral case (11), expansion impeller (13) and can prevent that slider disc (23) is stuck and effectively eliminates slider disc (23) between nozzle vane (25) glade plane space adjustable nozzle (12), the adjustable nozzle (12) and the expansion impeller (13) it is coaxially disposed from outside to inside in the expanding machine spiral case (11) relative to the main shaft (4), the adjustable nozzle (12) It is fixedly connected with the inwall of the expanding machine spiral case (11), the expanding machine spiral case (11) is provided with for the swollen of Working medium gas disengaging Swollen machine import (15) and expander outlet (16), the blower fan dog point (3) include blower fan exhaust volute and positioned at the wind Draught fan impeller (18) in machine exhaust volute, the blower fan exhaust volute are provided with the braking blower import (20) for air disengaging (21) are exported with braking blower, the both ends of the spindle casing are vented snail with the expanding machine spiral case (11) and the blower fan respectively Shell is fixedly connected, and the both ends of the main shaft (4) expand impeller (13) and the draught fan impeller (18) coaxial transmission with described respectively Connection.

5. high-power composite braking expanding machine according to claim 4, it is characterised in that in the blower fan exhaust volute also Provided with blower fan air-breathing guide cover (19) corresponding with the draught fan impeller (18), the blower fan air-breathing guide cover (19) is cylindrical in shape, And it is coaxially disposed the side away from the main shaft (4) in the draught fan impeller (18).

6. high-power composite braking expanding machine according to claim 4, it is characterised in that the adjustable nozzle (12) includes Can change multiple nozzle vanes (25) of nozzle passage area, positioning disk annular in shape (24), slider disc annular in shape (23) and Air deflector cover plate (22) annular in shape, the air deflector cover plate (22), the slider disc (23) and the positioning disk (24) are coaxial Set and be mutually matched, the air deflector cover plate (22) and the positioning disk (24) are located at the two of the slider disc (23) respectively Side, all the nozzle vanes (25) be respectively positioned between the slider disc (23) and the positioning disk (24), and along the positioning Disk (24) circumferencial direction is uniformly distributed, and each nozzle vane (25) side is brought into close contact and rotated with the positioning disk (24) Connection, opposite side are brought into close contact and are slidably connected with the slider disc (23), and the slider disc (23) is close to the air deflector lid The side of plate (22) is vertically provided with the trundle (28) that the slider disc (23) can be driven to do movement in a curve, the air deflector cover plate (22) transmission chute (29) corresponding with the trundle (28) is provided with, the trundle (28) is driven chute (29) from described Pass and can be slided in the transmission chute (29)；The air deflector cover plate (22) close to the slider disc (23) side and The slider disc (23) is coaxially arranged with the cover plate bulge loop that can be mutually fastened and connected close to the side of the air deflector cover plate (22) Along the circumferential direction it is additionally provided with the side of slider disc bulge loop, and the close slider disc (23) of the air deflector cover plate (22) multiple The elastic force collision bead (30) of the slider disc (23) side can be pressed on, the outer shroud edge of the air deflector cover plate (22) is provided with to institute State slider disc (23) and the cover sidewall of positioning disk (24) extension, the cover sidewall cover the slider disc (23) and with it is described Positioning disk (24) is removable to be fixedly connected.

7. high-power composite braking expanding machine according to claim 6, it is characterised in that each nozzle vane (25) Middle part be equipped with positioning hole, its one end side away from the positioning disk (24) inner ring is vertically provided with rotational pin (26), institute State and multiple alignment pins (27) to match respectively with the corresponding positioning hole, the cunning are along the circumferential direction provided with positioning disk (24) Multiple sliding grooves that the corresponding rotational pin (26) can be driven to do movement in a curve respectively are along the circumferential direction provided with Moving plate (23), often One end of the individual nozzle vane (25) is rotated by the corresponding alignment pin (27) and positioning hole with the positioning disk (24) to be connected Connect, the other end is slidably connected by the corresponding rotational pin (26) and sliding groove with the slider disc (23).

8. high-power composite braking expanding machine according to claim 6, it is characterised in that the cover plate bulge loop and the cunning The centring ring (32) that can ensure that the slider disc (23) spin stabilization and will not deflect is provided with the snapping of Moving plate bulge loop.

9. high-power composite braking expanding machine according to claim 6, it is characterised in that the cover plate bulge loop and the cunning Sealing ring (31) is provided with the snapping of Moving plate bulge loop.

10. the high-power composite braking expanding machine according to any one of claim 6-9, it is characterised in that the nozzle The surface of blade (25) is provided with one layer of lubricating layer, the slider disc (23) close to the side of the nozzle vane (25) and/ Or the positioning disk (24) is provided with one layer of lubricant layer close to the side of the nozzle vane (25).