CN114562541A - Damping device for pumped storage power station unit - Google Patents
Damping device for pumped storage power station unit Download PDFInfo
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- CN114562541A CN114562541A CN202210402654.1A CN202210402654A CN114562541A CN 114562541 A CN114562541 A CN 114562541A CN 202210402654 A CN202210402654 A CN 202210402654A CN 114562541 A CN114562541 A CN 114562541A
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- 238000013016 damping Methods 0.000 title claims abstract description 40
- 230000005540 biological transmission Effects 0.000 claims abstract description 74
- 230000007246 mechanism Effects 0.000 claims abstract description 61
- 238000005381 potential energy Methods 0.000 claims abstract description 44
- 238000006243 chemical reaction Methods 0.000 claims abstract description 42
- 238000010521 absorption reaction Methods 0.000 claims abstract description 32
- 239000003638 chemical reducing agent Substances 0.000 claims abstract 2
- 238000002955 isolation Methods 0.000 claims description 81
- 230000035939 shock Effects 0.000 claims description 66
- 239000000872 buffer Substances 0.000 claims description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- 238000011144 upstream manufacturing Methods 0.000 claims description 16
- 238000005086 pumping Methods 0.000 claims description 15
- 239000006096 absorbing agent Substances 0.000 claims description 9
- 210000001015 abdomen Anatomy 0.000 claims description 2
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 230000003313 weakening effect Effects 0.000 description 38
- 230000009471 action Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 238000004146 energy storage Methods 0.000 description 6
- 238000010248 power generation Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
- F16F15/067—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
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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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
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- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The invention discloses a pumped storage power station unit damping device which comprises a pumped storage plant, wherein the pumped storage plant comprises a plant main body, and an upper floor slab positioned at the top of the plant main body is fixedly connected to the inner wall of the plant main body; the vibration isolator can isolate the vibration generated by the operation of the potential energy conversion mechanism, the vibration generated by the potential energy conversion mechanism can not be transmitted to the motor generator and the six-stage centrifugal pump, the vibration of the pumped storage plant can be reduced once again, the radial vibration generated by the potential energy conversion mechanism can be weakened through the radial energy absorption structure, the vibration of the pumped storage plant can be smaller, the vibration reducer can be used between the potential energy conversion mechanism and the motor generator, the smooth transmission between the potential energy conversion mechanism and the six-stage centrifugal pump can be realized, the pumped storage plant can be operated more stably, the service life of the pumped storage plant can be prolonged, and the practicability of the pumped storage power station unit damping device is improved.
Description
Technical Field
The invention relates to the field of equipment related to pumped storage power stations, in particular to a damping device for a unit of a pumped storage power station.
Background
The pumped storage power station is a mode for indirectly storing electric energy, and utilizes surplus electric power in the next night to drive a water pump, so that water is pumped from a lower reservoir to an upper reservoir for storage, then the water is discharged for power generation in the next day and the first night and flows into the lower reservoir; the pumped storage power station is mainly composed of an upper reservoir, a water delivery system, a factory building, a switch station, an outgoing line field and a lower reservoir, wherein the factory building is a place for placing important electromechanical equipment such as an energy storage unit, electrical equipment and the like and is also the center of power plant production, the pumped storage power station not only completes basic functions such as pumping, generating and the like, but also plays important roles such as frequency modulation, phase modulation, load ascending, climbing, emergency accident standby and the like, and is completed through electromechanical equipment in the factory building, the pumped storage unit in the factory building is generally arranged by a vertical shaft, and a motor generator of the pumped storage power station is positioned above a three-nozzle impact type water turbine, the six-stage centrifugal pump is located below the three-nozzle impulse turbine, the motor generator, the three-nozzle impulse turbine and the six-stage centrifugal pump can vibrate in the operation process, the vibration generated by the action of the pulse dynamic pressure in the upper volute of the three-nozzle impulse turbine is the largest and is the main source of vibration of the pumped storage unit, and the vibration can cause damage to a factory building.
At present, people usually adopt the form of installing a shock pad to absorb shock of a motor generator, a three-nozzle impulse turbine and a six-stage centrifugal pump, but the shock absorption effect is extremely poor, and strong shock generated by the three-nozzle impulse turbine can be transmitted to the motor generator and the six-stage centrifugal pump through a transmission shaft, so that the motor generator, the six-stage centrifugal pump and a floor slab where the motor generator and the six-stage centrifugal pump generate shock with a larger amplitude, the safety of a factory building is seriously endangered, and therefore a pumped storage power station unit shock absorption device needs to be designed urgently.
Disclosure of Invention
1. Technical problem to be solved
The invention aims to provide a damping device for a pumped storage power station unit, which can well solve the problems in the prior art that the damping device is poor in damping effect, and the motor generator, the six-stage centrifugal pump and a floor where the motor generator and the six-stage centrifugal pump are located generate large-amplitude vibration due to the fact that strong vibration generated by the three-nozzle impulse turbine is transmitted to the motor generator and the six-stage centrifugal pump through a transmission shaft, so that the safety of a factory building is seriously endangered.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A shock absorption device of a pumped storage power station unit comprises a pumped storage plant, wherein the pumped storage plant comprises a plant main body, an upper floor positioned at the top of the plant main body is fixedly connected to the inner wall of the plant main body, a lower floor positioned below the upper floor is fixedly connected to the inner wall of the plant main body, an upstream pipeline positioned at the left end of the plant main body is fixedly inserted and connected to the top surface of the plant main body, the bottom end of the upstream pipeline penetrates through the upper floor and the lower floor, a motor generator is arranged on the top surface of the upper floor, a potential energy conversion mechanism is arranged on the top surface of the lower floor, torsion buffer mechanisms are respectively arranged at the bottoms of the motor generator and the potential energy conversion mechanism, one torsion buffer mechanism is fixedly arranged on the top surface of the upper floor, the other torsion buffer mechanism is fixedly arranged on the top surface of the lower floor, and a six-stage centrifugal pump is fixedly arranged on the bottom surface of an inner cavity of the plant main body, the bottom of the six-stage centrifugal pump is fixedly communicated with a downstream pipeline, the other end of the downstream pipeline extends to the outside of the factory building main body, the top of the six-stage centrifugal pump is fixedly communicated with a pump water pipe, the other end of the pump water pipe is communicated with the bottom end of the upstream pipeline, the upstream pipeline is fixedly communicated with a drain pipe positioned above a lower floor slab, the drain pipe is communicated with a potential energy conversion mechanism, control ball valves are arranged on pipelines of the pump water pipe and the drain pipe, a clutch is arranged on a transmission shaft on the six-stage centrifugal pump, and vibration isolators are arranged between the six-stage centrifugal pump and the potential energy conversion mechanism and between the potential energy conversion mechanism and the motor generator.
Preferably, the potential energy conversion mechanism comprises a deflection hole and a three-nozzle impulse turbine, the deflection hole is formed in a lower floor slab, three switching hoses are fixedly communicated with the bottom ends of the three-nozzle impulse turbine, switching elbows are fixedly communicated with the bottom ends of the three switching hoses and movably inserted into the deflection hole, a transmission shaft at the bottom of the three-nozzle impulse turbine penetrates through the three switching hoses and the switching elbows and extends to the outside of the three-nozzle impulse turbine, a lower buffer corrugated pipe is fixedly communicated with the other end of each switching elbow, a drain pipe is fixedly communicated with the other end of each lower buffer corrugated pipe, the other end of each drain pipe is fixedly communicated with a downstream pipeline, an upper buffer corrugated pipe is fixedly communicated with the left end of each three-nozzle impulse turbine, and the left end of each upper buffer corrugated pipe is fixedly communicated with the right end of the drain pipe.
Preferably, the torsion buffer mechanism comprises two positioning pipes, one positioning pipe is fixedly connected to the top surface of the upper floor slab and movably sleeved on a transmission shaft at the bottom of the electric generator, the other positioning pipe is fixedly connected to the top surface of the lower floor slab and movably sleeved on three switching hoses and the outside of the switching elbow, a stress arm plate is fixedly connected to the inner wall of the positioning pipe, a guide ring is fixedly inserted into the stress arm plate, an energy-absorbing spring and an energy-absorbing slider are movably sleeved on the outside of the guide ring, and the stress arm plate is in transmission connection with the energy-absorbing slider through the energy-absorbing spring.
Preferably, still include vertical bumper shock absorber, vertical bumper shock absorber includes the shock attenuation post, shock attenuation post fixed connection is on the surface of energy-absorbing slider, the shock attenuation round hole has been seted up to the inside of shock attenuation post, the underrun of shock attenuation round hole inner chamber is connected with the shock attenuation montant through the damping spring transmission, the inner wall sliding connection of shock attenuation montant and shock attenuation round hole, the other end of shock attenuation montant extends to the outside of shock attenuation round hole, the top fixed connection of motor generator below shock attenuation montant is on motor generator's bottom surface, the top fixed connection of three-nozzle impulse turbine below shock attenuation montant is on three-nozzle impulse turbine's bottom surface.
Preferably, the vibration isolator comprises two U-shaped mounting parts, one U-shaped mounting part is fixedly connected to the bottom surface of the upper floor slab, the other U-shaped mounting part is fixedly connected to the bottom surface of the inner cavity of the plant main body, a vibration isolation cylinder is fixedly inserted and connected to the surface, close to the lower floor slab, of each U-shaped mounting part, a vibration isolation pipe located in the middle of the vibration isolation cylinder is fixedly communicated with the bottom surface of the vibration isolation cylinder, a central stress pipe located in the middle of the vibration isolation cylinder is fixedly connected to the top surface of the vibration isolation cylinder, the bottom end of a transmission shaft on the motor generator is movably inserted and connected inside the central stress pipe and movably sleeved and connected to the top surface of the vibration isolation cylinder, the top end of the transmission shaft on the three-nozzle impulse turbine penetrates through the vibration isolation pipe and extends to the inside of the vibration isolation cylinder and is fixedly connected with a vibration isolation gear, and two driven large-belly gears are arranged inside the vibration isolation cylinder, two driven big tripe gears all with vibrations isolation gear meshing, two driven big tripe gears are located vibrations isolation gear's the left and right sides respectively, the vibrations isolation tube that its below was passed to the bottom of last transmission shaft of three-nozzle impulse turbine and extend to another vibrations isolation tube's inside and with corresponding vibrations isolation gear fixed connection, the top activity of transmission shaft is pegged graft in the inside of corresponding central atress pipe and the activity cup joints on the bottom surface of corresponding vibrations isolation tube on six-stage centrifugal pump.
Preferably, the energy-absorbing structure comprises two radial energy-absorbing pipes, the two radial energy-absorbing pipes are respectively and fixedly connected to the upper end surface and the lower end surface of the vibration isolation cylinder, the inner wall of each radial energy-absorbing pipe is fixedly connected with a radial energy-absorbing rod, the end part of each radial energy-absorbing rod at the top of the vibration isolation cylinder is fixedly connected to the outer surface of the central stressed pipe, the end part of each radial energy-absorbing rod at the bottom of the vibration isolation cylinder is fixedly connected to the outer surface of the vibration isolation cylinder, the outer part of each radial energy-absorbing rod is movably sleeved with a radial energy-absorbing block and a radial energy-absorbing elastic piece, the radial energy-absorbing block at the top of the vibration isolation cylinder is in transmission connection with the outer surface of the central stressed pipe through the radial energy-absorbing elastic piece, and the radial energy-absorbing block at the bottom of the vibration isolation cylinder is in transmission connection with the outer surface of the vibration isolation pipe through the radial energy-absorbing elastic piece.
Preferably, the vibration damping device comprises two transmission fixed bevel gears and a vibration damping rod, the two transmission fixed bevel gears are arranged on the upper surface and the lower surface of the vibration isolation cylinder, one transmission fixed bevel gear is fixedly sleeved at the bottom of a transmission shaft on the motor generator, the other transmission fixed bevel gear is fixedly sleeved at the top of the transmission shaft on the six-stage centrifugal pump, the vibration damping rod is movably inserted inside the radial energy absorption block, the vibration damping rod can rotate relative to the radial energy absorption block and cannot move up and down, the upper radial energy absorption block and the lower radial energy absorption block are sleeved outside the same vibration damping rod, the vibration damping rod is slidably inserted inside the rail sliding hole, a vibration damping square hole is formed inside the vibration damping rod, and the bottom surface of the inner cavity of the vibration damping square hole is connected with the vibration damping square rod through the transmission of a vibration damping spring, the vibration weakening square rod is in sliding connection with the inner wall of the vibration weakening square hole, a movable bevel gear is fixedly connected to the top end of the vibration weakening square rod, and the movable bevel gear is meshed with the transmission fixed bevel gear.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
the pumping energy storage factory building can realize the functions of pumping energy storage and water discharge power generation, the potential energy conversion mechanism can generate actual micro motion in the operation process to provide necessary action space for shock absorption, the torsion shock generated by the potential energy conversion mechanism and the motor generator can be buffered by the torsion buffer mechanism, the shock received by the pumping energy storage factory building can be reduced, the vertical shock received by the potential energy conversion mechanism and the motor generator can be buffered by the vertical shock absorber, the shock received by the pumping energy storage factory building can be further reduced, the shock generated by the operation of the potential energy conversion mechanism can be isolated by the shock isolator, the shock generated by the potential energy conversion mechanism can not be transmitted to the motor generator and the six-stage centrifugal pump, the shock received by the pumping energy storage factory building can be reduced again, and the radial shock generated by the potential energy conversion mechanism can be weakened by the radial energy absorption structure, the vibration that helps making the pumped storage power station receive is littleer, can make between potential energy conversion mechanism and the motor generator, the smooth transmission between potential energy conversion mechanism and the six-stage centrifugal pump through vibrations attenuator, makes pumped storage power station can normal operating, and pumped storage power station operation gets up more stably, helps prolonging pumped storage power station's life, has improved this pumped storage power station unit damping device's practicality.
Drawings
FIG. 1 is a schematic view of the structure of the present invention;
FIG. 2 is a schematic structural diagram of the potential energy conversion mechanism of FIG. 1 according to the present invention;
FIG. 3 is a schematic view of the torsion damping mechanism of FIG. 1 according to the present invention;
FIG. 4 is a top view of FIG. 3 in accordance with the present invention;
FIG. 5 is a schematic view showing the internal structure of the vertical shock absorber of FIG. 3 according to the present invention;
FIG. 6 is a schematic structural view of the vibration isolator of FIG. 1 according to the present invention;
FIG. 7 is a schematic view of the internal structure of the shock isolation tube of FIG. 6 according to the present invention;
FIG. 8 is a top view of the radial energy absorbing tube of FIG. 7 according to the present invention;
FIG. 9 is a schematic structural view of the radial energy absorption block of FIG. 8 according to the present invention;
FIG. 10 is a schematic view of the shock attenuator of FIG. 7 according to the present invention;
fig. 11 is a schematic view of the internal structure of fig. 10 according to the present invention.
The reference numbers in the figures illustrate:
1. a pumped storage plant; 101. a plant main body; 102. an upper floor slab; 103. a lower floor slab; 104. an upstream conduit; 105. a motor generator; 106. a six-stage centrifugal pump; 107. a downstream conduit; 108. a water pumping pipe; 109. a drain pipe; 110. a control ball valve; 111. a clutch; 2. a potential energy conversion mechanism; 20. a deflection hole; 21. a three-nozzle impulse turbine; 22. a hose is connected in a switching way; 23. transferring a bent pipe; 24. a lower buffer bellows; 25. a drain pipe; 26. an upper buffer bellows; 3. a torsion buffer mechanism; 31. a positioning tube; 32. a force-bearing arm plate; 33. a guide ring; 34. an energy-absorbing spring; 35. an energy-absorbing slider; 4. a vertical shock absorber; 41. a shock-absorbing post; 42. a damping round hole; 43. a damping spring; 44. a damping vertical rod; 5. a vibration isolator; 51. a U-shaped mounting member; 52. a vibration isolation cylinder; 53. a vibration isolation tube; 54. a central stressed tube; 55. a vibration isolation gear; 56. a driven large belly gear; 6. a radial energy absorbing structure; 61. a radial energy absorbing tube; 62. a radial energy absorbing rod; 63. a radial energy absorption block; 64. a radial energy absorbing elastic member; 7. a shock attenuator; 70. a rail slide hole; 71. a transmission fixed bevel gear; 72. a shock-weakening bar; 73. vibrating and weakening the square hole; 74. vibrating the weakened spring; 75. vibrating the weakened square bar; 76. a movable bevel gear.
Detailed Description
The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; rather than all embodiments. Based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.
Referring to fig. 1-11, a shock absorbing device for pumped storage power station units comprises a pumped storage plant 1, the pumped storage plant 1 comprises a plant main body 101, an upper floor 102 is fixedly connected to the inner wall of the plant main body 101, a lower floor 103 is fixedly connected to the inner wall of the plant main body 101 and is located below the upper floor 102, an upstream pipe 104 is fixedly inserted to the top surface of the plant main body 101 and is located at the left end of the plant main body, the bottom end of the upstream pipe 104 penetrates through the upper floor 102 and the lower floor 103, a motor generator 105 is arranged on the top surface of the upper floor 102, a potential energy conversion mechanism 2 is arranged on the top surface of the lower floor 103, torsion buffer mechanisms 3 are arranged at the bottoms of the motor generator 105 and the potential energy conversion mechanism 2, one torsion buffer mechanism 3 is fixedly arranged on the top surface of the upper floor 102, the other torsion buffer mechanism 3 is fixedly arranged on the top surface of the lower floor 103, a six-stage centrifugal pump 106 is fixedly installed on the bottom surface of the inner cavity of the plant main body 101, a downstream pipeline 107 is fixedly communicated with the bottom of the six-stage centrifugal pump 106, the other end of the downstream pipeline 107 extends to the outside of the plant main body 101, a pumping pipe 108 is fixedly communicated with the top of the six-stage centrifugal pump 106, the other end of the pumping pipe 108 is communicated with the bottom end of the upstream pipeline 104, a drain pipe 109 positioned above the lower floor 103 is fixedly communicated with the upstream pipeline 104, the drain pipe 109 is communicated with the potential energy conversion mechanism 2, control ball valves 110 are respectively arranged on pipelines of the pumping pipe 108 and the drain pipe 109, a clutch 111 is installed on a transmission shaft on the six-stage centrifugal pump 106, vibration isolators 5 are respectively arranged between the six-stage centrifugal pump 106 and the potential energy conversion mechanism 2 and between the potential energy conversion mechanism 2 and the motor generator 105, and a torsion buffer mechanism 3 can be arranged between the six-stage centrifugal pump 106 and the bottom surface of the inner cavity of the plant main body 101 for damping, in this case, the six-stage centrifugal pump 106 also needs to have a bellows connected to its water inlet and outlet pipes, the upstream pipe 104 communicating with the upper reservoir, and the downstream pipe 107 communicating with the lower reservoir.
The potential energy conversion mechanism 2 comprises a deflection hole 20 and a three-nozzle impulse turbine 21, the deflection hole 20 is formed in a lower floor 103, three adapter hoses 22 are fixedly communicated with the bottom end of the three-nozzle impulse turbine 21, adapter elbows 23 are fixedly communicated with the bottom ends of the three adapter hoses 22, the adapter elbows 23 are movably inserted in the deflection hole 20, a transmission shaft at the bottom of the three-nozzle impulse turbine 21 penetrates through the three adapter hoses 22 and the adapter elbows 23 and extends to the outside of the three-nozzle impulse turbine, a lower buffer corrugated pipe 24 is fixedly communicated with the other end of the adapter elbows 23, a drain pipe 25 is fixedly communicated with the other end of the lower buffer corrugated pipe 24, the other end of the drain pipe 25 is fixedly communicated with a downstream pipeline 107, an upper buffer corrugated pipe 26 is fixedly communicated with the left end of the three-nozzle impulse turbine 21, and the left end of the upper buffer corrugated pipe 26 is fixedly communicated with the right end of the drain pipe 109.
The torsion buffer mechanism 3 comprises two positioning pipes 31, one positioning pipe 31 is fixedly connected to the top surface of the upper floor 102 and movably sleeved on a transmission shaft at the bottom of the motor generator 105, the other positioning pipe 31 is fixedly connected to the top surface of the lower floor 103 and movably sleeved on the three switching hoses 22 and the outside of the switching elbow 23, a stress arm plate 32 is fixedly connected to the inner wall of the positioning pipe 31, a guide ring 33 is fixedly inserted in the stress arm plate 32, an energy-absorbing spring 34 and an energy-absorbing slider 35 are movably sleeved outside the guide ring 33, and the stress arm plate 32 is in transmission connection with the energy-absorbing slider 35 through the energy-absorbing spring 34.
Still include vertical bumper shock absorber 4, vertical bumper shock absorber 4 includes shock strut 41, shock strut 41 fixed connection is on the surface of energy-absorbing slider 35, shock attenuation round hole 42 has been seted up to the inside of shock strut 41, the bottom surface of shock attenuation round hole 42 inner chamber is connected with shock attenuation montant 44 through damping spring 43 transmission, shock attenuation montant 44 and shock attenuation round hole 42's inner wall sliding connection, shock attenuation montant 44's the other end extends to shock attenuation round hole 42's outside, the top fixed connection of shock attenuation montant 44 below motor generator 105 is on motor generator 105's bottom surface, the top fixed connection of three nozzle impulse turbine 21 below shock attenuation montant 44 is on the bottom surface of three nozzle impulse turbine 21.
The vibration isolator 5 comprises U-shaped mounting pieces 51, the number of the U-shaped mounting pieces 51 is two, one U-shaped mounting piece 51 is fixedly connected to the bottom surface of the upper floor slab 102, the other U-shaped mounting piece 51 is fixedly connected to the bottom surface of the inner cavity of the plant main body 101, a vibration isolation cylinder 52 is fixedly inserted and connected to the surface, close to the lower floor slab 103, of the U-shaped mounting piece 51, a vibration isolation pipe 53 positioned in the middle of the vibration isolation cylinder 52 is fixedly communicated to the bottom surface of the vibration isolation cylinder 52, a central stress pipe 54 positioned in the middle of the vibration isolation cylinder 52 is fixedly connected to the top surface of the vibration isolation cylinder 52, the bottom end of a transmission shaft on the motor generator 105 is movably inserted and connected to the inside of the central stress pipe 54 and movably sleeved on the top surface of the vibration isolation cylinder 52, the top end of the transmission shaft on the three-nozzle impulse turbine 21 penetrates through the vibration isolation pipe 53 and extends to the inside of the vibration isolation cylinder 52 and is fixedly connected with a vibration isolation gear 55, the inside of vibrations isolation cylinder 52 is equipped with two driven tripe gears 56, two driven tripe gears 56 all mesh with vibrations isolation gear 55, two driven tripe gears 56 are located the left and right sides of vibrations isolation gear 55 respectively, the bottom of last transmission shaft of three-nozzle impulse turbine 21 passes the vibrations isolation tube 53 of its below and extends to the inside of another vibrations isolation cylinder 52 and with corresponding vibrations isolation gear 55 fixed connection, the top activity of transmission shaft is pegged graft in the inside of corresponding central atress pipe 54 and the activity cup joints on the bottom surface of corresponding vibrations isolation cylinder 52 on six-stage centrifugal pump 106.
The energy-absorbing structure also comprises a radial energy-absorbing structure 6, the radial energy-absorbing structure 6 comprises two radial energy-absorbing pipes 61, the number of the radial energy-absorbing pipes 61 is two, the two radial energy-absorbing pipes 61 are respectively and fixedly connected to the upper end surface and the lower end surface of the vibration isolation cylinder 52, the inner wall of the radial energy-absorbing pipe 61 is fixedly connected with a radial energy-absorbing rod 62, the end part of the radial energy-absorbing rod 62 at the top of the vibration isolation cylinder 52 is fixedly connected to the outer surface of the central stress pipe 54, the end part of the radial energy-absorbing rod 62 at the bottom of the vibration isolation cylinder 52 is fixedly connected to the outer surface of the vibration isolation pipe 53, the radial energy-absorbing block 63 is movably sleeved outside the radial energy-absorbing rod 62, the radial energy-absorbing elastic piece 64, the radial energy-absorbing block 63 at the top of the vibration isolation cylinder 52 are in transmission connection with the outer surface of the central stressed pipe 54 through the radial energy-absorbing elastic piece 64, and the radial energy-absorbing block 63 at the bottom of the vibration isolation cylinder 52 is in transmission connection with the outer surface of the vibration isolation pipe 53 through the radial energy-absorbing elastic piece 64.
The vibration weakening device 7 comprises a rail sliding hole 70, two transmission fixed bevel gears 71 and two vibration weakening rods 72, wherein the rail sliding hole 70 is formed in the upper surface and the lower surface of the vibration isolation cylinder 52, one transmission fixed bevel gear 71 is fixedly sleeved at the bottom of a transmission shaft on the motor generator 105, the other transmission fixed bevel gear 71 is fixedly sleeved at the top of the transmission shaft on the six-stage centrifugal pump 106, the vibration weakening rods 72 are movably inserted in the radial energy absorption blocks 63, the vibration weakening rods 72 can rotate relative to the radial energy absorption blocks 63 and cannot move up and down, the upper radial energy absorption blocks 63 and the lower radial energy absorption blocks 63 are sleeved outside the same vibration weakening rod 72, the vibration weakening rods 72 are slidably inserted in the rail sliding hole 70, vibration weakening square holes 73 are formed in the vibration weakening rods 72, the bottom surfaces of the inner cavities of the vibration weakening square holes 73 are in transmission connection with vibration weakening square rods 75 through vibration weakening springs 74, the vibration weakening square rod 75 is in sliding connection with the inner wall of the vibration weakening square hole 73, a movable bevel gear 76 is fixedly connected to the top end of the vibration weakening square rod 75, and the movable bevel gear 76 is meshed with the transmission fixed bevel gear 71.
The working principle is as follows:
firstly, a control ball valve 110 on a drain pipe 109 is opened, a clutch 111 is disconnected for transmission, then a pumped storage factory 1 enters a water discharging and power generating process, then water in an upper reservoir enters a three-nozzle impulse turbine 21 through an upstream pipeline 104, the drain pipe 109 and an upper buffer corrugated pipe 26 under the action of potential energy difference and drives a runner bucket in the three-nozzle impulse turbine 21 to rotate, then the runner bucket in the three-nozzle impulse turbine 21 drives a transmission shaft on the runner bucket to rotate, then the top end of the transmission shaft on the three-nozzle impulse turbine 21 drives a vibration isolation gear 55 to rotate, then the vibration isolation gear 55 drives a vibration weakening rod 72 to rotate through the meshing action between the vibration weakening rod 55 and a driven large-belly gear 56, and then the vibration weakening rod 72 drives the transmission shaft on a motor generator 105 to rotate through the meshing action between a vibration weakening square rod 75, a movable bevel gear 76 and a transmission fixed bevel gear 71, then the rotor inside the electric generator 105 rotates and generates electric energy, then the electric generator 105 vibrates when running, then the vertical damping rod 44 vibrates under the vibration energy of the electric generator 105 and applies work to the damping spring 43, then the damping spring 43 buffers the vertical vibration generated by the electric generator 105, the influence of the vibration of the electric generator 105 on the pumped storage factory building 1 is reduced, then the torsion vibration in the circumferential direction generated on the electric generator 105 is transmitted to the energy absorption slide block 35 through the vertical damper 4, the energy absorption slide block 35 rotates in a reciprocating manner under the vibration of the torsion, then the energy absorption slide block 35 applies work to the energy absorption spring 34 in a reciprocating manner, the torsion damping mechanism 3 can buffer the torsion vibration in the circumferential direction generated on the electric generator 105, the influence of the electric generator 105 on the pumped storage factory building 1 is reduced, and then the torsion damping mechanism 3 and the vertical damper 4 corresponding to the potential energy conversion mechanism 2 adopt the same principle to apply the same principle to the torsion damping mechanism 3 and the vertical damper 4 The vibration generated by the potential energy conversion mechanism 2 is buffered, the influence of the potential energy conversion mechanism 2 on the pumped storage factory 1 is reduced, then in the process that water flow passes through the three-nozzle impulse turbine 21, the three-nozzle impulse turbine 21 can generate pulse vibration under the action of impulse pressure, the pulse vibration can enable the three-nozzle impulse turbine 21 to radially deviate, vibrate and vibrate up and down, further enable a transmission shaft on the three-nozzle impulse turbine 21 to radially deviate, vibrate and slide up and down, a vibration isolation gear 55 can slide up and down relative to a driven large-belly gear 56, the up and down vibration on the three-nozzle impulse turbine 21 can not be transmitted to the motor generator 105, the purpose of isolating the up and down vibration of the three-nozzle impulse turbine 21 is achieved, the transmission shaft on the three-nozzle impulse turbine 21 can radially deviate and vibrate, and the vibration isolation gear 55 can radially deviate, in the process, the radial energy absorption block 63 drives the driven large-belly gear 56 to be always pressed on the surface of the vibration isolation gear 55 through the vibration weakening rod 72 under the action of the elastic force of the radial energy absorption elastic part 64, then the radial vibration of the vibration isolation gear 55 can do work on the radial energy absorption elastic part 64 through the driven large-belly gear 56, the vibration weakening rod 72 and the radial energy absorption block 63, so that the radial vibration of the vibration isolation gear 55 can be buffered through the radial energy absorption elastic part 64, the radial vibration of the potential energy conversion mechanism 2 is further buffered, meanwhile, the radial vibration of the vibration isolation gear 55 can be radially vibrated through the driven large-belly gear 56, the vibration weakening rod 72 and the radial energy absorption block 63, then the vibration weakening rod 72 is alternately radially far away from a transmission shaft on the electric generator 105 and radially close to the transmission shaft on the electric generator 105, during the process that the vibration weakening rod 72 is radially far away from the transmission shaft on the motor generator 105, the vibration weakening rod 72 carries the movable bevel gear 76 radially away from the transmission shaft on the motor generator 105 through the vibration weakening square rod 75, meanwhile, the vibration weakening square rod 75 carries the movable bevel gear 76 upwards under the elastic force of the vibration weakening spring 74, then the movable bevel gear 76 slides obliquely upwards along the surface of the transmission fixed bevel gear 71 and keeps the meshing action with the transmission fixed bevel gear 71, so that the transmission is continued, then the vibration weakening rod 72 radially approaches the transmission shaft on the motor generator 105 under the elastic pulling force of the radial energy-absorbing elastic member 64, then the vibration weakening rod 72 carries the movable bevel gear 76 radially close to the transmission shaft on the motor generator 105 through the vibration weakening square rod 75, and then the surface of the transmission fixed bevel gear 71 exerts pressure on the movable bevel gear 76, then the movable bevel gear 76 applies pressure to the vibration weakening square rod 75, then the vibration weakening square rod 75 applies pressure to the vibration weakening spring 74, then the vibration weakening spring 74 elastically contracts, then the movable bevel gear 76 slides downwards obliquely on the surface of the transmission fixed bevel gear 71 and keeps the meshing action between the movable bevel gear and the transmission fixed bevel gear 71, so that the transmission is continuously carried out, the radial vibration of the potential energy conversion mechanism 2 is isolated, the radial vibration of the potential energy conversion mechanism 2 is not transmitted to the motor generator 105, the damping effect is better, then the water in the upper reservoir enters the lower reservoir through the three switching hoses 22, the switching elbow 23, the lower buffer corrugated pipe 24, the water discharge pipe 25 and the downstream pipeline 107, the process of converting potential energy into electric energy is realized, then the control ball valve 110 on the water discharge pipe 109 is closed, the control ball valve 110 on the water pumping pipe 108 is opened, and the clutch ball valve 111 is connected for transmission, then, power is supplied to the motor generator 105, then the motor generator 105 drives the six-stage centrifugal pump 106 to operate through the vibration isolator 5, the potential energy conversion mechanism 2 and the clutch 111, in the process, the vibration isolator 5 between the potential energy conversion mechanism 2 and the clutch 111 adopts the same principle to ensure that the vibration generated by the potential energy conversion mechanism 2 is not transmitted to the six-stage centrifugal pump 106, and then the water in the lower reservoir enters the upper reservoir through the downstream pipeline 107, the six-stage centrifugal pump 106, the pumping water pipe 108 and the upstream pipeline 104.
As described above; but are merely preferred embodiments of the invention; the scope of the invention is not limited thereto; those skilled in the art can appreciate that the present invention is not limited to the specific embodiments disclosed herein; the technical scheme and the improved concept of the invention are equally replaced or changed; are intended to be covered by the scope of the present invention.
Claims (5)
1. The utility model provides a pumped storage power station unit damping device, includes pumped storage factory building (1), its characterized in that: the pumped storage plant (1) comprises a plant main body (101), an upper floor (102) positioned at the top of the plant main body is fixedly connected to the inner wall of the plant main body (101), a lower floor (103) positioned below the upper floor (102) is fixedly connected to the inner wall of the plant main body (101), an upstream pipeline (104) positioned at the left end of the plant main body is fixedly inserted and connected to the top surface of the plant main body (101), the bottom end of the upstream pipeline (104) penetrates through the upper floor (102) and the lower floor (103), a motor generator (105) is arranged on the top surface of the upper floor (102), a potential energy conversion mechanism (2) is arranged on the top surface of the lower floor (103), torsion buffer mechanisms (3) are respectively arranged at the bottoms of the motor generator (105) and the potential energy conversion mechanism (2), one torsion buffer mechanism (3) is fixedly arranged on the top surface of the upper floor (102), the other torsion buffer mechanism (3) is fixedly arranged on the top surface of the lower floor (103), a six-stage centrifugal pump (106) is fixedly installed on the bottom surface of an inner cavity of the plant main body (101), a downstream pipeline (107) is fixedly communicated with the bottom of the six-stage centrifugal pump (106), the other end of the downstream pipeline (107) extends to the outside of the plant main body (101), a pumping pipe (108) is fixedly communicated with the top of the six-stage centrifugal pump (106), the other end of the pumping pipe (108) is communicated with the bottom end of an upstream pipeline (104), a drain pipe (109) positioned above a lower floor (103) is fixedly communicated with the upstream pipeline (104), the drain pipe (109) is communicated with the potential energy conversion mechanism (2), control ball valves (110) are respectively arranged on pipelines of the pumping pipe (108) and the drain pipe (109), and a clutch (111) is installed on a transmission shaft on the six-stage centrifugal pump (106), vibration isolators (5) are arranged between the six-stage centrifugal pump (106) and the potential energy conversion mechanism (2) and between the potential energy conversion mechanism (2) and the motor generator (105).
2. The pumped-storage power station unit damping device of claim 1, wherein: the potential energy conversion mechanism (2) comprises a deflection hole (20) and a three-nozzle impulse turbine (21), the deflection hole (20) is formed in a lower floor (103), the bottom end of the three-nozzle impulse turbine (21) is fixedly communicated with three switching hoses (22), the bottom end of each three switching hose (22) is fixedly communicated with a switching elbow (23), each switching elbow (23) is movably inserted into the deflection hole (20), a transmission shaft at the bottom of the three-nozzle impulse turbine (21) penetrates through the three switching hoses (22) and the switching elbows (23) and extends to the outside of the three-nozzle impulse turbine, the other end of each switching elbow (23) is fixedly communicated with a lower buffer corrugated pipe (24), the other end of each lower buffer corrugated pipe (24) is fixedly communicated with a drain pipe (25), the other end of each drain pipe (25) is fixedly communicated with a downstream pipeline (107), and the left end of the three-nozzle impulse turbine (21) is fixedly communicated with an upper buffer corrugated pipe (26), the left end of the upper buffer corrugated pipe (26) is fixedly communicated with the right end of the drain pipe (109).
3. The pumped-storage power station unit damping device of claim 2, wherein: the torsion buffer mechanism (3) comprises two positioning pipes (31), one positioning pipe (31) is fixedly connected to the top surface of an upper floor (102) and movably sleeved on a transmission shaft at the bottom of the motor generator (105), the other positioning pipe (31) is fixedly connected to the top surface of a lower floor (103) and movably sleeved on three switching hoses (22) and the outside of a switching bent pipe (23), a stress arm plate (32) is fixedly connected to the inner wall of the positioning pipe (31), a guide ring (33) is fixedly inserted in the stress arm plate (32), an energy absorption spring (34) and a slider energy absorption block (35) are movably sleeved on the outside of the guide ring (33), and the stress arm plate (32) is in transmission connection with the energy absorption slider (35) through the energy absorption spring (34).
4. The pumped-storage power plant unit damping device of claim 3, wherein: still include vertical bumper shock absorber (4), vertical bumper shock absorber (4) are including shock strut (41), shock strut (41) fixed connection is on the surface of energy-absorbing slider (35), shock attenuation round hole (42) have been seted up to the inside of shock strut (41), the underrun of shock attenuation round hole (42) inner chamber is connected with shock strut (44) through damping spring (43) transmission, shock strut (44) and the inner wall sliding connection of shock attenuation round hole (42), the other end of shock strut (44) extends to the outside of shock attenuation round hole (42), the top fixed connection of motor generator (105) below shock strut (44) is on the bottom surface of motor generator (105), the top fixed connection of three nozzle impulse turbine (21) below shock strut (44) is on the bottom surface of three nozzle impulse turbine (21).
5. The pumped-storage power station unit damping device of claim 4, wherein: the vibration isolator (5) comprises U-shaped mounting parts (51), the number of the U-shaped mounting parts (51) is two, one U-shaped mounting part (51) is fixedly connected to the bottom surface of an upper floor (102), the other U-shaped mounting part (51) is fixedly connected to the bottom surface of an inner cavity of the plant main body (101), a vibration isolation cylinder (52) is fixedly inserted on the surface, close to a lower floor (103), of the U-shaped mounting part (51), a vibration isolation pipe (53) is fixedly communicated with the bottom surface of the vibration isolation cylinder (52) and located in the middle of the vibration isolation cylinder, a central stressed pipe (54) located in the middle of the vibration isolation cylinder is fixedly connected to the top surface of the vibration isolation cylinder (52), the bottom end of a transmission shaft on the motor generator (105) is movably inserted in the center stressed pipe (54) and movably sleeved on the top surface of the vibration isolation cylinder (52), and the top end of the transmission shaft on the three-nozzle impact water turbine (21) penetrates through the vibration isolation pipe (53) and extends to the interior of the vibration isolation cylinder (52) The vibration isolation gear (55) is fixedly connected, two driven large-belly gears (56) are arranged inside the vibration isolation cylinder (52), the two driven large-belly gears (56) are both meshed with the vibration isolation gear (55), the two driven large-belly gears (56) are respectively positioned at the left side and the right side of the vibration isolation gear (55), the bottom end of a transmission shaft on the three-nozzle impulse water turbine (21) penetrates through a vibration isolation pipe (53) below the transmission shaft and extends to the inside of the other vibration isolation cylinder (52) and is fixedly connected with the corresponding vibration isolation gear (55), the top end of the transmission shaft on the six-stage centrifugal pump (106) is movably inserted inside a corresponding central stress pipe (54) and is movably sleeved on the bottom surface of the corresponding vibration isolation cylinder (52), a radial energy absorption structure (6) is arranged on the vibration isolation cylinder (52), and a vibration attenuator (7) is arranged on the radial energy absorption structure (6), the vibration isolation gear (55) is in transmission connection with the motor generator (105) and the six-stage centrifugal pump (106) through the driven big belly gear (56) and the vibration reducer (7).
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| CN202210402654.1A CN114562541B (en) | 2022-04-18 | 2022-04-18 | Shock-absorbing device for pumped storage power station unit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210402654.1A CN114562541B (en) | 2022-04-18 | 2022-04-18 | Shock-absorbing device for pumped storage power station unit |
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| CN114562541B CN114562541B (en) | 2024-01-16 |
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| DE102015214451A1 (en) * | 2015-07-30 | 2017-02-02 | Schaeffler Technologies AG & Co. KG | Damper device and torque transmission device with such damper device |
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| CN210890633U (en) * | 2019-12-02 | 2020-06-30 | 国家电网有限公司 | Damping device for pumped storage power station unit |
| CN111927920A (en) * | 2020-07-30 | 2020-11-13 | 长沙协创智赢技术服务有限公司 | Can prevent wind and have self preservation and protect signal base station of device |
| WO2021248800A1 (en) * | 2020-06-12 | 2021-12-16 | 苏州迎乐机电自动化科技有限公司 | Direct drive electric motor with adjustable starting torque |
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2022
- 2022-04-18 CN CN202210402654.1A patent/CN114562541B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012110662A1 (en) * | 2012-11-07 | 2014-05-08 | Alexander Eyhorn | Pumped storage hydroelectric power plant and power generation and storage system with such a power plant |
| US20160369867A1 (en) * | 2013-09-27 | 2016-12-22 | Firestone Industrial Products Company, Llc | Vibration isolator and systems including same |
| DE102015214451A1 (en) * | 2015-07-30 | 2017-02-02 | Schaeffler Technologies AG & Co. KG | Damper device and torque transmission device with such damper device |
| CN207420774U (en) * | 2017-11-20 | 2018-05-29 | 国家电网公司 | A kind of new-type hydroenergy storage station water supply installation |
| CN108678887A (en) * | 2018-07-23 | 2018-10-19 | 中国电建集团华东勘测设计研究院有限公司 | With hair with pump group arrangement |
| CN210890633U (en) * | 2019-12-02 | 2020-06-30 | 国家电网有限公司 | Damping device for pumped storage power station unit |
| WO2021248800A1 (en) * | 2020-06-12 | 2021-12-16 | 苏州迎乐机电自动化科技有限公司 | Direct drive electric motor with adjustable starting torque |
| CN111927920A (en) * | 2020-07-30 | 2020-11-13 | 长沙协创智赢技术服务有限公司 | Can prevent wind and have self preservation and protect signal base station of device |
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|---|---|
| CN114562541B (en) | 2024-01-16 |
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