CN102606435B - Wind generating set and hydraulic pump aggregate thereof - Google Patents
Wind generating set and hydraulic pump aggregate thereof Download PDFInfo
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- CN102606435B CN102606435B CN201210091277.0A CN201210091277A CN102606435B CN 102606435 B CN102606435 B CN 102606435B CN 201210091277 A CN201210091277 A CN 201210091277A CN 102606435 B CN102606435 B CN 102606435B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
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Abstract
The invention discloses a hydraulic pump aggregate, which comprises a front end cap (1), a rear end cap (2), a piston cylinder and a rotating shaft (3). The rotating shaft comprises a symmetric shaft (31) and at least two eccentric shafts (32), the eccentric shafts (32) are axially arrayed along the symmetric shaft (31), projections of the eccentric shafts (32) in a radial plane of the symmetric shaft (31) are peripherally distributed uniformly, a group of plunger cavities (41) is formed in an inner cavity of the piston cylinder relative to each eccentric shaft (32), a plunger component capable of reciprocating is arranged in each plunger cavity (41), the other ends of the plunger components are attached on the outsides of the eccentric shafts (32), and the plunger components can rotate relatively. On the one hand, parts can be universal in different power modes due to the proper structural design of the hydraulic pump aggregate, so that modular production is realized, and on the other hand, power shunt can be easily realized.
Description
Technical field
The present invention relates to technical field of transmission, particularly a kind of oil hydraulic pump group.In addition, the invention still further relates to a kind of wind power generating set comprising this oil hydraulic pump group.
Background technique
Although had more than 100 year till now from Denmark's invention First wind power generating set, composition and the arrangement of near many decades driving chain of wind generating set but do not have basic change, substantially: the composition of impeller+main shaft+step-up gear+coupling+generator and arrangement.But along with separate unit installed power is increasing, step-up gear volume also increasing, structural design also becomes increasingly complex.Particularly structural design, when power is not very large (unit electric motor power is generally no more than 2 megawatts), the structural design that step-up gear is commonly used the most is the structural design of one-level NGW Gear Planet Transmission (sun gear floating load balancing)+secondary driving of parallel axes and the structural design of two-stage NGW Gear Planet Transmission+one-level driving of parallel axes, when power increases further again, step-up gear usually adopts (gear ring floating load balancing+sun gear floating load balancing)+one-level driving of parallel axes of one-level NW Gear Planet Transmission or adopts the structural design of secondary NGW Gear Planet Transmission+one-level parallel axes, the power of this structural design is generally all less than 4 megawatts, reason is: kinetic energy after wind energy transformation (moment of torsion) is passed to step-up gear by main shaft by the blade of wheel nose, the low-speed big input shaft of step-up gear and main shaft are rigidly connected, the little torque output shaft of high speed of step-up gear is connected by coupling with generator, also be rigidly connected.The wind energy transforming rear varying load is through from the kinetic energy of impeller input gear of wind power speed-increasing gearbox, when speed instability, moment of torsion is also unstable, therefore, along with the change of wind speed can cause irregular impact to step-up gear middle gear, gear is made to enter fatigue state too early and then not reach predicted life.
At present, countries in the world are the share of the complete machine order grabbing wind power plant owner, fall over each other to develop or developing the above high-power wind-driven generator group of separate unit electric motor power 5 megawatt, at this moment, each step-up gear design manufacturer almost all adopts the structural design of " differential " train, this structural design is very complicated, how the poower flow not only needing to consider in differential gear train distributes, the correction method of gear-profile and teeth directional and the calculating of the best amount of repairing, and also will consider the load balancing structure more more complicated than NGW or NW Gear Planet Transmission design; And in the using process of step-up gear, because gears meshing belongs to rigid contact, so the sudden change of wind speed can impact whole wind-power electricity generation group, power generating quality also can be affected.For this reason, a lot of wind power equipment design now, manufacturing firm start to consider or studying the speedup that application hydraulic speed increasing gear carries out wind power generating set.
But, current, hydraulic equipment Specialty Design manufacturing firm both domestic and external is not wind-powered electricity generation industry design high-power hydraulic pump, its design, the tandem product normally radial plunger type oil hydraulic pump produced, please refer to Fig. 1, Fig. 1 is the structural representation of a kind of radial plunger type oil hydraulic pump of prior art.
As shown in Figure 1, oil hydraulic pump in the prior art comprises stator 1 ', plunger 2 ', plunger cylinder 3 ', oil distributing shaft 4 ' and oil distributing shaft auxiliary 5 ', the cavity of oil distributing shaft 4 ' is separated to form low pressure oil suction chamber 6 ' by oil distributing shaft auxiliary 5 ' and high pressure goes out oil pocket 7 ', its working principle is: under the effect of external force moment of torsion, as shown in Figure 1, plunger cylinder 3 ' and oil distributing shaft 4 ' rotate counterclockwise, the plunger 2 ' (being in two plungers 2 ' of below) be communicated with low pressure oil suction chamber 6 ' is protruding under the influence of centrifugal force, low pressure oil is sucked in the plunger cavity at its place, simultaneously, plunger 2 ' (being in two plungers 2 ' of top) that oil pocket is communicated with is gone out along with rotation with high pressure, under the effect of the inwall of stator 1 ', inwardly stretch into, thus the high pressure oil press-in high pressure in plunger chamber is gone out oil pocket 7 ', high pressure oil and then go out the middle derivation of oil pocket 7 ' by this high pressure, thus achieve kinetic energy to hydraulic pressure transformation of energy.
But above-mentioned pluger type hydraulic pump of the prior art is according to having following defect:
First, pluger type hydraulic pump can not realize modularized production.Particularly, the size of component such as the pluger type hydraulic pump of different capacity stator, plunger and plunger cylinder required for it etc. is completely different, along with power is larger, the size of above-mentioned parts is also larger, thus component can not be general in the oil hydraulic motor of different power, thus can not realize modularized production.Secondly, this pluger type hydraulic pump is also not easy to realize power dividing.
Summary of the invention
The technical problem to be solved in the present invention is for providing a kind of oil hydraulic pump group, and the structural design of this oil hydraulic pump group can make component general under different capacity pattern on the one hand, thus realizes modularized production; Power dividing can be realized with comparalive ease on the other hand.
For solving the problems of the technologies described above, the invention provides a kind of oil hydraulic pump group, for wind power generating set, comprising front cover, rear end cover, be located at the piston/cylinder between front cover and rear end cover and rotate through the rotary shaft body of front cover and rear end cover; Described rotary shaft body comprises symmetry axis portion and eccentric axial portion, the quantity of described eccentric axial portion is at least two, and each eccentric axial portion is arranged along the axially-aligned in described symmetry axis portion, and its projection in the radial plane in this symmetry axis portion is uniformly distributed along the circumference in this symmetry axis portion;
Relative to each eccentric axial portion, all being formed with quantity in the inner chamber of described piston/cylinder is one group of multiple plunger chamber, described oil hydraulic pump group also comprises multiple plunger part, one end reciprocable of described plunger part is located in described plunger chamber, and its other end is attached to the outside of described eccentric axial portion and can relatively rotates;
The high pressure that described oil hydraulic pump group also comprises the circumferential edge position being located at described plunger chamber goes out oil pocket and low pressure oil suction chamber, this high pressure goes out oil pocket by oil outlet valve component and described plunger chamber unilaterally connected, this low pressure oil suction chamber is by oiling valve assembly and described plunger chamber unilaterally connected, with convenient plunger part by stretching into limit position in the process of stretching out limit position motion, described plunger chamber sucks low pressure oil by described oiling valve assembly by described low pressure oil suction chamber; When plunger part is by stretching out limit position in the process stretching into limit position motion, described plunger chamber goes out oil pocket by described oil outlet valve component to described high pressure and sprays into high pressure oil.
Preferably, described piston/cylinder comprises the quantity cylinder body ring identical with the quantity of described eccentric axial portion, and each group plunger chamber is all located on a cylinder body ring, and each plunger chamber is the through hole that the radial direction along described cylinder body ring is arranged;
Described piston/cylinder also comprises the week externally high low pressure chamber stripper loop that sealing is placed on described cylinder body ring, this high low pressure chamber stripper loop is provided with high pressure cavity and low pressure cavity, the inner side of described high pressure cavity is by described oil outlet valve component and described plunger chamber unilaterally connected, and the inner side of described low pressure cavity is by described oiling valve assembly and described plunger chamber unilaterally connected;
The circumferential outside seal of described high low pressure chamber stripper loop is set with high low pressure chamber bezel ring, and this high low pressure chamber bezel ring, seals described high pressure cavity and low pressure cavity and forms described high pressure respectively and go out oil pocket and low pressure oil suction chamber.
Preferably, one group of plunger part corresponding to arbitrary group of plunger chamber includes main plunger parts and multiple auxiliary plunger part;
One end sealing of described main plunger parts is located in described plunger chamber, and its other end is connected with the plunger ring that rotating sleeve is loaded on the outside of described eccentric axial portion;
One end sealing of each described auxiliary plunger part is located in corresponding plunger chamber, and the week that its other end is all articulated with described plunger ring goes up outward.
Preferably, described main plunger parts comprise principal post stopper rod, and one end of described principal post stopper rod is hinged with the principal post piston part sealing and be located in corresponding plunger chamber, and the other end of described principal post stopper rod connects described plunger ring.
Preferably, described plunger ring comprises the first semi-ring be connected with described principal post stopper rod and the second semi-ring be connected with this first semi-ring; Externally be provided with in the week of described first semi-ring and described second semi-ring so that the hinging hole hinged with described auxiliary plunger part.
Preferably, be provided with toggle between two adjacent cylinder body rings, the inner ends thereof of this toggle is placed on the outside in described symmetry axis portion, and the both sides of the outer end of this toggle are connected with front cover and rear end cover respectively by the high low pressure chamber bezel ring, of correspondence;
The outer end of this toggle is connected on the cabin frame of described wind power generating set further.
Preferably, described toggle comprises toggle outer shroud and is fixed at the toggle inner ring of this toggle outer shroud inside, described toggle inner ring rotates the outside being placed on described symmetry axis portion, and described toggle outer shroud both sides are connected with front cover and rear end cover respectively by the high low pressure chamber bezel ring, of correspondence.
Preferably, described toggle inner ring comprises interconnective first torsion semi-ring and the second torsion semi-ring, and described first torsion semi-ring is fixedly connected on the inwall of described toggle outer shroud by stiffening rib.
Preferably, described symmetry axis portion is provided with central through bore, is fixed with central shaft in this central through bore, and this central shaft is provided with so that the axle center hole that passes through of the elastic cable paper of wind power generating set; Gap between the outer wall of described central shaft and the inwall of described central through bore forms oil leab.
In addition, for solving the problems of the technologies described above, the present invention also provides a kind of wind power generating set, comprises main shaft, and one end of described main shaft is connected with blade by wheel hub; Described wind power generating set also comprises the oil hydraulic pump group described in above-mentioned any one, and the other end and the described rotary shaft body of described main shaft are in transmission connection.
In the present invention, during work, along with eccentric axial portion is rotated, part plunger part moves to stretching out limit position by stretching into limit position, now, the low pressure oil in low pressure oil suction chamber is entered in plunger chamber by oiling valve assembly, until this plunger part way stretches out limit position; Then, along with eccentric axial portion is rotated further, this plunger part moves to stretching into limit position by stretching out limit position, high pressure oil in the plunger chamber at now its place is under the promotion of this plunger part, spray into high pressure by oil outlet valve component and go out oil pocket, high pressure oil and then go out oil pocket by this high pressure and derive, thus achieves kinetic energy to hydraulic pressure transformation of energy.
In the present invention, owing to can arrange multiple eccentric axial portion in symmetry axis portion, relative to an eccentric axial portion, one group of plunger chamber can be set, in each group plunger chamber, correspond to one group of plunger part; In this kind of structure, eccentric axial portion, one group of plunger chamber and an one group of plunger part and other components can be equivalent to a hydraulic pump unit, thus can arrange multiple hydraulic pump unit as required, thus increase output power.In this kind of structure, the size that eccentric axial portion required for each hydraulic pump unit, plunger chamber, plunger part and the high pressure matched thereof go out oil pocket, low pressure oil suction chamber, oiling valve assembly and oil outlet valve component etc. is identical, that is the component of same size can produce the oil hydraulic pump group of different output power as required, thus achieve modularized production.
In addition, in said structure, oil hydraulic pump group comprises multiple hydraulic pump unit, and each hydraulic pump unit is equipped with an independent high pressure and goes out oil pocket, each high pressure goes out oil pocket and exports as an independent power stage unit, and thus oil hydraulic pump group can realize power dividing with comparalive ease.
In sum, oil hydraulic pump group provided by the present invention can make component general under different capacity pattern on the one hand, thus realizes modularized production; Power dividing can be realized with comparalive ease on the other hand.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of radial plunger type oil hydraulic pump of prior art;
Fig. 2 is the structural representation of oil hydraulic pump group in an embodiment of the present invention;
Fig. 3 is the structural representation of the cylinder body ring of oil hydraulic pump group in Fig. 2;
Fig. 3-1 is the side view of cylinder body ring in Fig. 3;
Fig. 4 is the structural representation of the rotary shaft body of oil hydraulic pump group in Fig. 2;
Fig. 5 is the structural representation of the high low pressure chamber stripper loop of oil hydraulic pump group in Fig. 2;
Fig. 5-1 is the side view of high low pressure chamber stripper loop in Fig. 5;
Fig. 6 is the structural representation of the high low pressure chamber bezel ring, of oil hydraulic pump group in Fig. 2;
Fig. 7 is the sectional view diametrically of oil hydraulic pump group in Fig. 2;
Fig. 8 is the principal post stopper rod of main plunger parts in Fig. 7 and the structural representation of plunger ring;
Fig. 9 is the structural representation of the toggle of oil hydraulic pump group in Fig. 2.
Wherein, the corresponding relation in Fig. 1 between reference character and component names is:
1 ' stator; 2 ' plunger; 3 ' plunger cylinder; 4 ' oil distributing shaft; 5 ' oil distributing shaft auxiliary; 6 ' low pressure oil suction chamber; 7 ' high pressure goes out oil pocket.
Corresponding relation in Fig. 2 to Fig. 9 between reference character and component names is:
1 front cover;
2 rear end covers;
3 rotary shaft body; 31 symmetry axis portions; 311 central shafts; 311a axle center hole; 312 oil leabs; 32 eccentric axial portion;
4 cylinder body rings; 41 plunger chamber;
5 high low pressure chamber stripper loops; 51 high pressure go out oil pocket; 51a oil outlet valve component; 51b high pressure oil exports; 52 low pressure oil suction chambers; 52a oiling valve assembly; 52b low pressure oil entrance;
6 high low pressure chamber bezel ring,s;
71 main plunger parts; 711 plunger rings; 711a first semi-ring; 711b second semi-ring; 711c hinging hole; 712 principal post stopper rods; 713 principal post piston parts;
72 auxiliary plunger parts;
8 toggles; 81 toggle outer shrouds; 82 toggle inner ring; 821 first torsion semi-rings; 822 second torsion semi-rings; 83 stiffening ribs.
Embodiment
Core of the present invention is for providing a kind of oil hydraulic pump group, and the structural design of this oil hydraulic pump group can make component general under different capacity pattern on the one hand, thus realizes modularized production; Power dividing can be realized with comparalive ease on the other hand.
In order to make those skilled in the art understand technological scheme of the present invention better, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Please refer to Fig. 2 and Fig. 4, Fig. 2 is the structural representation of oil hydraulic pump group in an embodiment of the present invention; Fig. 4 is the structural representation of the rotary shaft body of oil hydraulic pump group in Fig. 2.
In one embodiment, oil hydraulic pump group provided by the present invention, for wind power generating set, is characterized in that, as shown in Figure 2, comprise front cover 1, rear end cover 2, be located at the piston/cylinder between front cover 1 and rear end cover 2 and rotate through the rotary shaft body 3 of front cover 1 and rear end cover 2; As shown in Figure 4, described rotary shaft body 3 comprises symmetry axis portion 31 and eccentric axial portion 32, the quantity of described eccentric axial portion 32 is at least two, and each eccentric axial portion 32 is arranged along the axially-aligned in described symmetry axis portion 31, and its projection in the radial plane in this symmetry axis portion 31 is uniformly distributed along the circumference in symmetry axis portion 31;
Relative to each eccentric axial portion 32, all being formed with quantity in the inner chamber of described piston/cylinder is one group of multiple plunger chamber 41, described oil hydraulic pump group also comprises multiple plunger part, one end reciprocable of described plunger part is located in plunger chamber 41, and its other end is attached to the outside of described eccentric axial portion 32 and can relatively rotates;
The high pressure that described oil hydraulic pump group also comprises the circumferential edge position being located at described plunger chamber 41 goes out oil pocket 51 and low pressure oil suction chamber 52, this high pressure goes out oil pocket 51 by oil outlet valve component 51a and described plunger chamber 41 unilaterally connected, this low pressure oil suction chamber 52 is by oiling valve assembly 52a and described plunger chamber 41 unilaterally connected, with convenient plunger part by stretching into limit position in the process of stretching out limit position motion, described plunger chamber 41 sucks low pressure oil by described oiling valve assembly 52a by described low pressure oil suction chamber 52; When plunger part is by stretching out limit position in the process stretching into limit position motion, described plunger chamber 41 goes out oil pocket 51 by described oil outlet valve component 51a to described high pressure and sprays into high pressure oil.
In the present invention, during work, along with eccentric axial portion 32 is rotated, part plunger part moves to stretching out limit position by stretching into limit position, now, the low pressure oil in low pressure oil suction chamber 52 is entered in plunger chamber 41 by oiling valve assembly 52a, until this plunger part way stretches out limit position; Then, along with eccentric axial portion 32 is rotated further, this plunger part moves to stretching into limit position by stretching out limit position, high pressure oil in the plunger chamber 41 at now its place is under the promotion of this plunger part, spray into high pressure by oil outlet valve component 51a and go out oil pocket 51, high pressure oil and then go out oil pocket 51 by this high pressure and derive, thus achieve kinetic energy to hydraulic pressure transformation of energy.
In the present invention, owing to can arrange multiple eccentric axial portion 32 in symmetry axis portion 31, accordingly, relative to an eccentric axial portion 32, one group of plunger chamber 41 can be set, in each group plunger chamber 41, correspond to one group of plunger part; In this kind of structure, an eccentric axial portion 32, one group of plunger chamber 41 and one group of plunger part and other components can be equivalent to a hydraulic pump unit, thus can arrange multiple hydraulic pump unit as required, thus increase output power.In this kind of structure, the size that eccentric axial portion 32 required for each hydraulic pump unit, plunger chamber 41, plunger part and the high pressure matched thereof go out oil pocket 51, low pressure oil suction chamber 52, oiling valve assembly 52a and oil outlet valve component 51a etc. is identical, that is the component of same size can produce the oil hydraulic pump group of different output power as required, thus achieve modularized production.
In addition, in said structure, oil hydraulic pump group comprises multiple hydraulic pump unit, and each hydraulic pump unit is equipped with an independent high pressure and goes out oil pocket 51, each high pressure goes out oil pocket 51 and exports as an independent power stage unit, and thus oil hydraulic pump group can realize power dividing with comparalive ease.
In technique scheme, specific design can also be made to the formation structure that plunger chamber 41, high pressure go out oil pocket 51 and low pressure oil suction chamber 52, such as, please refer to the structural representation that Fig. 3, Fig. 3-1, Fig. 5, Fig. 5-1 and Fig. 6, Fig. 3 are the cylinder body ring of oil hydraulic pump group in Fig. 2; Fig. 3-1 is the side view of cylinder body ring in Fig. 3; Fig. 5 is the structural representation of the high low pressure chamber stripper loop of oil hydraulic pump group in Fig. 2; Fig. 5-1 is the side view of high low pressure chamber stripper loop in Fig. 5; Fig. 6 is the structural representation of the high low pressure chamber bezel ring, of oil hydraulic pump group in Fig. 2.
As shown in Fig. 3 and Fig. 3-1, described piston/cylinder comprises the quantity cylinder body ring 4 identical with the quantity of described eccentric axial portion 32, each group plunger chamber 41 is all located on a cylinder body ring 4, and each plunger chamber 41 is the through hole that the radial direction along described cylinder body ring 4 is arranged.
Please also refer to Fig. 2, Fig. 5 and Fig. 5-1, described piston/cylinder also comprises the week externally high low pressure chamber stripper loop 5 that sealing is placed on described cylinder body ring 4, this high low pressure chamber stripper loop 5 is provided with high pressure cavity and low pressure cavity, the inner side of described high pressure cavity is by described oil outlet valve component 51a and described plunger chamber 41 unilaterally connected, and the inner side of described low pressure cavity is by described oiling valve assembly 52a and described plunger chamber 41 unilaterally connected; Particularly, as shown in fig. 5-1, high low pressure chamber stripper loop 5 is respectively equipped with high pressure oil and goes out 51b and low pressure oil entrance 52b, this high pressure oil goes out on 51b to set out oil valve assembly 51a, thus realizes the one-way conduction that plunger chamber 41 and high pressure go out oil pocket 51; This low pressure oil entrance 52b arranges oiling valve assembly 52a, thus realizes the one-way conduction of plunger chamber 41 and low pressure oil suction chamber 52.
In addition, please refer to Fig. 2, Fig. 5-1 and Fig. 6, the circumferential outside seal of described high low pressure chamber stripper loop 5 is set with high low pressure chamber bezel ring, 6, and this high low pressure chamber bezel ring, 6 seals described high pressure cavity and low pressure cavity and forms described high pressure respectively and go out oil pocket 51 and low pressure oil suction chamber 52.It should be noted that, this high low pressure chamber bezel ring, 6 is provided with high pressure oil interface and low pressure oil interface, and be communicated with so that high pressure oil outlet tube goes out oil pocket 51 by high pressure oil interface and high pressure, low pressure oil inlet pipe is communicated with low pressure oil suction chamber 52 by low pressure oil interface.
In technique scheme, can also make specific design, such as, please refer to Fig. 7 and Fig. 8 to the structure of plunger part, Fig. 7 is the sectional view diametrically of oil hydraulic pump group in Fig. 2; Fig. 8 is the principal post stopper rod of main plunger parts in Fig. 7 and the structural representation of plunger ring.
As shown in Figure 7, one group of plunger part corresponding to arbitrary group of plunger chamber 41 includes main plunger parts 71 and multiple auxiliary plunger part 72; One end sealing of described main plunger parts 71 is located in described plunger chamber 41, and its other end is connected with the plunger ring 711 that rotating sleeve is loaded on the outside of described eccentric axial portion 32; One end sealing of each described auxiliary plunger part 72 is located in corresponding plunger chamber 41, and its other end is all articulated with going up outward in week of described plunger ring 711.
In said structure design, each auxiliary plunger part 72 is achieved and being rotationally connected of eccentric axial portion 32 by a plunger ring 711, relative to each auxiliary plunger part 72 separately and the structural design that is rotationally connected of eccentric axial portion 32, the reliability and stability of its work are significantly improved, and simplify the structure, reduce manufacturing cost.
Particularly, in technique scheme, specific design can be made to the structure of main plunger parts 71; Such as, as shown in Figure 8, described main plunger parts 71 comprise principal post stopper rod 712, and one end of described principal post stopper rod 712 is hinged with the principal post piston part 713 sealing and be located in corresponding plunger chamber 41, and the other end of described principal post stopper rod 712 connects described plunger ring 711.Further, described plunger ring 711 comprises the first semi-ring 711a be connected with described principal post stopper rod 712 and the second semi-ring 711b be connected with this first semi-ring 711a; Described first semi-ring 711a and described second semi-ring 711b is externally provided with so that the hinging hole 711c hinged with described auxiliary plunger part 72 in week.
In said structure design, because plunger ring 711 comprises the first semi-ring 711a and the second semi-ring 711b, thus can achieve more easily and assemble with the suit of eccentric axial portion 32.In addition, the circumferential external articulation hole 711c of described first semi-ring 711a and described second semi-ring 711b, what can realize with auxiliary plunger part 72 more easily is hinged.
On the basis of technique scheme, can also make further design, such as please refer to Fig. 9, Fig. 9 is the structural representation of the toggle of oil hydraulic pump group in Fig. 2.
As shown in Figure 2, be provided with toggle 8 between two adjacent cylinder body rings 4, the inner ends thereof of this toggle 8 is placed on the outside in described symmetry axis portion 31, and the both sides of the outer end of this toggle 8 are connected with front cover 1 and rear end cover 2 respectively by the high low pressure chamber bezel ring, 6 of correspondence; Particularly, can be bolted.Further, comparatively crucially, the outer end of this toggle 8 is connected on the cabin frame of described wind power generating set further.
In said structure, because toggle 8 is connected on the frame of cabin, thus toggle 8 maintains static; And then on this basis, the both sides of the outer end of this toggle 8 are connected with front cover 1 and rear end cover 2 respectively by the high low pressure chamber bezel ring, 6 of correspondence, and thus front cover 1, rear end cover 2 and high low pressure chamber bezel ring, 6, cylinder body ring 4 and high low pressure chamber stripper loop 55 all maintain static; On this basis, rotary shaft body 3 can be organized plunger part relative to each and rotate, and avoids whole oil hydraulic pump along with rotary shaft body 3 one pieces rotation.
Further, as shown in Figure 9, described toggle 8 comprises toggle outer shroud 81 and is fixed at the toggle inner ring 82 of this toggle outer shroud 81 inside, described toggle inner ring 82 rotates the outside being placed on described symmetry axis portion 31, and described toggle outer shroud 81 both sides are connected with front cover 1 and rear end cover 2 respectively by the high low pressure chamber bezel ring, 6 of correspondence.This kind of structural design achieves being rotationally connected between toggle 8 and symmetry axis portion 31 on the one hand easily, also achieves the high low pressure chamber bezel ring, 6 of toggle 8 by correspondence and the connection of front cover 1 and rear end cover 2 on the other hand more easily.
Particularly, as shown in Figure 9, described toggle inner ring 82 comprises interconnective first torsion semi-ring 821 and the second torsion semi-ring 822, and the suit that this kind of structural design can be convenient between toggle inner ring 82 and symmetry axis portion 31 assembles; Described first torsion semi-ring 821 is fixedly connected on the inwall of described toggle outer shroud 81 by stiffening rib, thus improves the structural strength of toggle inner ring 82.
In addition, in any one technological scheme above-mentioned, as shown in Figure 4, described symmetry axis portion 31 is provided with central through bore, central shaft 311 is fixed with in this central through bore, this central shaft 311 axle center hole 311a, the elastic cable paper of wind power generating set just enters in wheel hub through this axle center hole 311a, thus is connected with correspondingly power equipment; In addition, as shown in Figure 4, gap between the outer wall of described central shaft 311 and the inwall of described central through bore forms oil leab 312, by the radial direction oil that this oil leab 312 and rotary shaft body 3 are offered, can lubricate each bearing in rotary shaft body 3.
In addition, the present invention also provides a kind of wind power generating set, comprises main shaft, and one end of described main shaft is connected with blade by wheel hub; State wind power generating set and also comprise oil hydraulic pump group described in above-mentioned any one, the other end and the described rotary shaft body 3 of described main shaft are in transmission connection.Other parts of this wind power generating set, with reference to prior art, no longer can launch herein.
Above a wind power generating set provided by the present invention and oil hydraulic pump group thereof are described in detail.Apply specific case herein to set forth principle of the present invention and mode of execution, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.
Claims (8)
1. an oil hydraulic pump group, for wind power generating set, it is characterized in that, comprise front cover (1), rear end cover (2), be located at the piston/cylinder between front cover and rear end cover and rotate through the rotary shaft body (3) of front cover (1) and rear end cover (2); Described rotary shaft body (3) comprises symmetry axis portion (31) and eccentric axial portion (32), the quantity of described eccentric axial portion (32) is at least two, and each eccentric axial portion (32) is arranged along the axially-aligned of described symmetry axis portion (31), and its projection in the radial plane in this symmetry axis portion (31) is uniformly distributed along the circumference in this symmetry axis portion (31);
Relative to each eccentric axial portion (32), all being formed with quantity in the inner chamber of described piston/cylinder is one group of multiple plunger chamber (41), described oil hydraulic pump group also comprises multiple plunger part, one end reciprocable of described plunger part is located in described plunger chamber (41), and its other end is attached to the outside of described eccentric axial portion (32) and can relatively rotates;
The high pressure that described oil hydraulic pump group also comprises the circumferential edge position being located at described plunger chamber (41) goes out oil pocket (51) and low pressure oil suction chamber (52), this high pressure goes out oil pocket (51) by oil outlet valve component (51a) and described plunger chamber (41) unilaterally connected, this low pressure oil suction chamber (52) is by oiling valve assembly (52a) and described plunger chamber (41) unilaterally connected, with convenient plunger part by stretching into limit position in the process of stretching out limit position motion, described plunger chamber (41) sucks low pressure oil by described oiling valve assembly (52a) by described low pressure oil suction chamber (52), when plunger part is by stretching out limit position in the process stretching into limit position motion, described plunger chamber (41) goes out oil pocket (51) by described oil outlet valve component (51a) to described high pressure and sprays into high pressure oil,
Described piston/cylinder comprises the quantity cylinder body ring (4) identical with the quantity of described eccentric axial portion (32), each group plunger chamber (41) is all located on a cylinder body ring (4), and each plunger chamber (41) is the through hole that the radial direction along described cylinder body ring (4) is arranged;
Described piston/cylinder also comprises the week externally high low pressure chamber stripper loop (5) that sealing is placed on described cylinder body ring (4), this high low pressure chamber stripper loop (5) is provided with high pressure cavity and low pressure cavity, the inner side of described high pressure cavity is by described oil outlet valve component (51a) and described plunger chamber (41) unilaterally connected, and the inner side of described low pressure cavity is by described oiling valve assembly (52a) and described plunger chamber unilaterally connected;
The circumferential outside seal of described high low pressure chamber stripper loop (5) is set with high low pressure chamber bezel ring, (6), and this high low pressure chamber bezel ring, (6) seals described high pressure cavity and low pressure cavity and forms described high pressure respectively and go out oil pocket (51) and low pressure oil suction chamber (52);
One group of plunger part corresponding to arbitrary group of plunger chamber (41) includes a main plunger parts (71) and multiple auxiliary plunger part (72);
One end sealing of described main plunger parts (71) is located in described plunger chamber (41), and its other end is connected with the plunger ring (711) that rotating sleeve is loaded on the outside of described eccentric axial portion (32);
One end sealing of each described auxiliary plunger part (72) is located in corresponding plunger chamber (41), and its other end is all articulated with going up outward in week of described plunger ring (711).
2. oil hydraulic pump group as claimed in claim 1, it is characterized in that, described main plunger parts (71) comprise principal post stopper rod (712), one end of described principal post stopper rod (712) is hinged with the principal post piston part (713) sealing and be located in corresponding plunger chamber (41), and the other end of described principal post stopper rod (712) connects described plunger ring (711).
3. oil hydraulic pump group as claimed in claim 2, it is characterized in that, described plunger ring (711) comprises the first semi-ring (711a) be connected with described principal post stopper rod (712) and the second semi-ring (711b) be connected with this first semi-ring (711a); Externally being provided with in week so that the hinging hole (712c) hinged with described auxiliary plunger part (72) of described first semi-ring (711a) and described second semi-ring (712b).
4. the oil hydraulic pump group as described in any one of claims 1 to 3, it is characterized in that, toggle (8) is provided with between two adjacent cylinder body rings (4), the inner ends thereof of this toggle (8) is placed on the outside of described symmetry axis portion (31), and the both sides of the outer end of this toggle (8) are connected with front cover (1) and rear end cover (2) respectively by high low pressure chamber bezel ring, (6) of correspondence;
The outer end of this toggle (8) is connected on the cabin frame of described wind power generating set further.
5. oil hydraulic pump group as claimed in claim 4, it is characterized in that, described toggle (8) comprises toggle outer shroud (81) and is fixed at the inner toggle inner ring (82) of this toggle outer shroud (81), the rotation of described toggle inner ring (82) is placed on the outside of described symmetry axis portion (31), and described toggle outer shroud (81) both sides are connected with front cover (1) and rear end cover (2) respectively by high low pressure chamber bezel ring, (6) of correspondence.
6. oil hydraulic pump group as claimed in claim 5, it is characterized in that, described toggle inner ring (82) comprises interconnective first torsion semi-ring (821) and the second torsion semi-ring (822), and described first torsion semi-ring (821) is fixedly connected on the inwall of described toggle outer shroud (81) by stiffening rib (83).
7. the oil hydraulic pump group as described in any one of claims 1 to 3, it is characterized in that, described symmetry axis portion (31) is provided with central through bore, be fixed with central shaft (311) in this central through bore, this central shaft (311) is provided with so that the axle center hole (311a) that passes through of the elastic cable paper of wind power generating set; Gap between the outer wall of described central shaft (311) and the inwall of described central through bore forms oil leab (312).
8. a wind power generating set, comprises main shaft, and one end of described main shaft is connected with blade by wheel hub; It is characterized in that, described wind power generating set also comprises the oil hydraulic pump group as described in any one of claim 1 to 7, and the other end and the described rotary shaft body (3) of described main shaft are in transmission connection.
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| CN201210091277.0A CN102606435B (en) | 2012-03-30 | 2012-03-30 | Wind generating set and hydraulic pump aggregate thereof |
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| CN105134539A (en) * | 2015-08-21 | 2015-12-09 | 吉效科 | Eccentric rotation power end structure of reciprocation pump |
| CN105971981B (en) * | 2016-06-15 | 2018-07-17 | 三一重型能源装备有限公司 | Hydraulic power mechanism and fluid pressure type wind-driven generator |
| CN105971826B (en) * | 2016-06-15 | 2018-08-10 | 三一重型能源装备有限公司 | Fluid pressure type wind-driven generator |
| CN106499605A (en) * | 2016-11-14 | 2017-03-15 | 三集团有限公司 | Hydraulic pump body structure and hydraulic blower |
| DE102016124048A1 (en) * | 2016-12-12 | 2018-06-14 | Kamat Gmbh & Co. Kg | Axial piston pump with high flow rate at low speed and use of a piston pump in a wind turbine |
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| CN2269485Y (en) * | 1996-06-28 | 1997-12-03 | 中国科学院沈阳自动化研究所 | Straight line-static pressure balance multiple star composite motor |
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| CN102606435A (en) | 2012-07-25 |
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Address after: 102206, Beijing Changping District Huilongguan North Road 31 Industrial Park Patentee after: Sany Heavy Energy Co.,Ltd. Address before: 102206, Beijing Changping District Huilongguan North Road 31 Industrial Park Patentee before: SANY HEAVY ENERGY Co.,Ltd. Address after: 102206, Beijing Changping District Huilongguan North Road 31 Industrial Park Patentee after: SANY HEAVY ENERGY EQUIPMENT Co.,Ltd. Address before: 102206, Beijing Changping District Huilongguan North Road 31 Industrial Park Patentee before: SANY ELECTRIC Co.,Ltd. Address after: 102206, Beijing Changping District Huilongguan North Road 31 Industrial Park Patentee after: SANY HEAVY ENERGY Co.,Ltd. Address before: 102206, Beijing Changping District Huilongguan North Road 31 Industrial Park Patentee before: SANY HEAVY ENERGY EQUIPMENT Co.,Ltd. |