CN114837954A - Bidirectional submersible tubular pump - Google Patents
Bidirectional submersible tubular pump Download PDFInfo
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- CN114837954A CN114837954A CN202210519446.XA CN202210519446A CN114837954A CN 114837954 A CN114837954 A CN 114837954A CN 202210519446 A CN202210519446 A CN 202210519446A CN 114837954 A CN114837954 A CN 114837954A
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- guide vane
- adjustable
- guide
- blade
- straight
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D3/00—Axial-flow pumps
- F04D3/005—Axial-flow pumps with a conventional single stage rotor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/54—Fluid-guiding means, e.g. diffusers
- F04D29/548—Specially adapted for liquid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/54—Fluid-guiding means, e.g. diffusers
- F04D29/56—Fluid-guiding means, e.g. diffusers adjustable
- F04D29/566—Fluid-guiding means, e.g. diffusers adjustable specially adapted for liquid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2270/00—Control
- F05D2270/60—Control system actuates means
- F05D2270/62—Electrical actuators
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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
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a bidirectional diving tubular pump, comprising: the rear adjustable guide vane and the front adjustable guide vane which are coaxially installed comprise guide vane wheel rims, guide vane wheel hubs, fixed straight guide vanes and adjustable straight guide vanes; each adjustable straight guide blade comprises a plurality of movable guide blades distributed between a guide vane wheel rim and a guide vane wheel hub, a rotating ring sleeved on the outer peripheral surface of the guide vane wheel rim, a rack circumferentially and fixedly arranged on the outer peripheral surface of the rotating ring, and a driving mechanism for driving the rotating ring to rotate; each adjustable straight guide vane is provided with a central shaft extending along the radial direction of the guide vane wheel hub; one end of each movable guide blade is hinged with the guide blade wheel hub, the other end of each movable guide blade extends to the guide blade wheel rim, a rigid shaft is arranged in each movable guide blade along the longitudinal direction, each rigid shaft penetrates through the guide blade wheel rim and the rotating ring from inside to outside and then is connected with a gear, and each gear is meshed with the rack; when the driving mechanism drives the rotating ring to rotate, the rack is meshed with the gear and drives the corresponding movable guide vane to change the included angle between the movable guide vane and the central shaft through the rigid shaft.
Description
Technical Field
The invention relates to the technical field of hydraulic power engineering, in particular to a bidirectional submersible tubular pump.
Background
In recent years, with the acceleration of the project of transferring north and south water, a large number of pump stations are newly built and improved in China. The axial flow pump has the characteristics of large flow, low lift, bidirectional operation and the like, and plays a great role in the south-to-north water transfer engineering. A plurality of low-lift pump stations which are newly built at present need to operate in two directions, and the pump stations pump water in two directions by adopting the two-way submersible tubular pumps, so that the pump stations are simple in structure, low in construction cost and convenient to operate and manage, and are widely applied. The existing bidirectional tubular pump has lower efficiency when reversely running when a rear-mounted bent guide vane is adopted. The reason is that the rear guide vane serves as the front guide vane, so that the condition of water flow at the inlet of the water pump is poor when the water pump runs reversely, and the guide vane at the outlet of the water pump recovers kinetic energy and improves the water flow condition poorly at the moment. In order to take forward and reverse operation into account, the front and rear straight guide vanes can be adopted, but the bidirectional operation efficiency is lower. The front guide vane and the rear guide vane of the traditional bidirectional diving tubular pump are both in fixed shapes, and the forward running efficiency and the reverse running efficiency of the water pump are lower; and the forward efficiency is improved through the design of the guide vane blades, and meanwhile, the efficiency of reverse operation is reduced, and the efficiency of two directions cannot be considered.
Disclosure of Invention
The purpose of the invention is as follows: the bidirectional submersible tubular pump is used for solving the problems that front and rear straight guide vanes of the conventional bidirectional tubular pump are not adjustable and the forward and reverse running efficiency is low.
The technical scheme is as follows: the invention provides a bidirectional diving tubular pump, comprising: the device comprises an impeller, a rear adjustable guide vane coaxially arranged at the rear side of the impeller and a front adjustable guide vane coaxially arranged at the front side of the impeller; any one of the rear adjustable guide vane and the front adjustable guide vane comprises a guide vane wheel rim, a guide vane wheel hub coaxially sleeved in the guide vane wheel rim, a fixed straight guide vane and an adjustable straight guide vane; the fixed straight guide blade is fixedly arranged between the guide vane wheel hub and the guide vane wheel rim; each adjustable straight guide blade comprises a plurality of movable guide blades distributed between a guide vane wheel rim and a guide vane wheel hub, a rotating ring sleeved on the outer peripheral surface of the guide vane wheel rim, a rack circumferentially and fixedly arranged on the outer peripheral surface of the rotating ring, and a driving mechanism for driving the rotating ring to rotate; each adjustable straight guide vane is provided with a central shaft extending along the radial direction of the guide vane wheel hub; one end of each movable guide blade is hinged with the guide blade wheel hub, the other end of each movable guide blade extends to the guide blade wheel rim, a rigid shaft is arranged in each movable guide blade along the longitudinal direction, each rigid shaft penetrates through the guide blade wheel rim and the rotating ring from inside to outside and then is connected with a gear, and each gear is meshed with the rack; when the driving mechanism drives the rotating ring to rotate, the rack is meshed with the gear and drives the corresponding movable guide vane to change the included angle between the movable guide vane and the central shaft through the rigid shaft.
Furthermore, the included angle between each movable guide blade and the corresponding central shaft ranges from minus 30 degrees to 30 degrees, and the rotation angle of each fixed straight guide blade is 0.
Furthermore, when the bidirectional submersible tubular pump runs from front to back, the included angle between each movable guide vane of the adjustable straight guide vanes of the front adjustable guide vanes and the corresponding central shaft is 0 degree, and the included angle between each movable guide vane of the adjustable straight guide vanes of the back adjustable guide vanes and the corresponding central shaft is a certain angle value; when the bidirectional submersible tubular pump runs from back to front, the included angle between each movable guide blade of the adjustable straight guide blade of the rear adjustable guide blade and the corresponding central shaft is 0 degree, and the included angle between each movable guide blade of the adjustable straight guide blade of the front adjustable guide blade and the corresponding central shaft is a certain angle value.
Further, the driving mechanism comprises a fan-shaped turbine, a worm, a support, two sleeves and a motor; the fan-shaped worm wheel and the support are fixedly arranged on the outer surface of the rotating ring respectively, the worm is arranged on the support and meshed with the fan-shaped worm wheel, the two sleeves are arranged on the support and sleeved on the outer surfaces of two ends of the worm respectively for limiting two ends of the worm, and the motor is connected with the worm through the coupler and used for driving the worm to rotate.
Furthermore, a dial is arranged at the bottom of each gear, and each dial is used for displaying the included angle between the corresponding movable guide vane and the central shaft.
Furthermore, one end surface of each movable guide blade close to the inner side of the guide vane wheel rim is spherical.
Furthermore, a sealing seat is arranged at the position of each rigid shaft extending out of the guide vane wheel rim for mechanical sealing.
Further, the device also comprises a bulb body coaxially arranged at the rear side of the rear adjustable guide vane and a straight cone section coaxially arranged at the front side of the front adjustable guide vane; the bulb body comprises a first shell arranged on the rear side of the rear adjustable guide vane, a second shell arranged on the rear side of the first shell, and a supporting piece welded between the first shell and the second shell; the straight cone section comprises a third shell arranged on the front side of the front adjustable guide vane and a water guide pile welded on the front side of a guide vane hub of the front adjustable guide vane; and the impeller comprises an impeller hub, an impeller rim coaxially arranged on the periphery of the impeller hub, and two-way blades circumferentially distributed on the impeller hub.
Furthermore, each fixed straight guide blade is correspondingly welded between the guide vane wheel hub and the guide vane wheel rim; one end of each rigid shaft is welded with the corresponding movable guide blade, and the other end of each rigid shaft is fixedly connected with the corresponding gear through a bolt; the rack is welded on the outer surface of the swivel.
Furthermore, the worm has a lead angle and a friction angle, and the lead angle is smaller than the friction angle, so that the worm can carry out self-locking.
According to the bidirectional submersible tubular pump, the adjustable straight guide blades of the rear adjustable guide blades or the front adjustable guide blades are structurally designed, each adjustable straight guide blade is provided with a central shaft extending along the radial direction of the guide hub, each adjustable straight guide blade comprises a plurality of movable guide blades, a rigid shaft, gears, a rotating ring, racks and a driving mechanism, the driving mechanism is used for driving the rotating ring to rotate, the rotating ring drives the racks to be meshed with the gears, each gear drives the corresponding rigid shaft and the corresponding movable guide blade to rotate, so that the included angle between each movable guide blade and the corresponding central shaft is changed, and the effect of adjusting the angle of the adjustable straight guide blades is achieved. The angle of the adjustable straight guide blade is adjusted by utilizing the adjustability of the included angle between the movable guide blade in the front adjustable guide blade or the rear adjustable guide blade and the corresponding central shaft, so that the forward and reverse running efficiency of the bidirectional submersible tubular pump is improved.
Drawings
FIG. 1 is a schematic structural view of a bi-directional submersible through-flow pump of the present invention;
FIG. 2 is a schematic structural view of a rear adjustable vane;
FIG. 3 is a schematic structural view of the aft adjustable guide vane at another angle;
FIG. 4 is a schematic structural view of a leading adjustable vane;
FIG. 5 is a schematic view of the leading adjustable vane at another angle.
Detailed Description
The technical scheme provided by the invention is explained in detail in the following with the accompanying drawings.
As shown in fig. 1 to 5, the bidirectional submersible tubular pump according to the present invention includes a bulb 20, a rear adjustable guide vane 21, an impeller 22, a front adjustable guide vane 23, and a straight cone 24, which are coaxially installed along a first installation shaft 43 from the rear to the front.
Any of the rear adjustable guide vanes 21 and the front adjustable guide vanes 23 includes: the guide vane wheel rim 17, the guide vane wheel hub 13 coaxially sleeved in the guide vane wheel rim 17 along the first mounting shaft 43, the fixed straight guide blade 19 and the adjustable straight guide blade arranged between the guide vane wheel hub 13 and the guide vane wheel rim 17; the fixed straight guide vane 19 is fixedly arranged between the guide vane wheel hub 13 and the guide vane wheel rim 17; any adjustable straight guide vane all includes: the guide vane device comprises a plurality of movable guide vanes 11 circumferentially distributed between a guide vane rim 17 and a guide vane hub 13 in an array manner, a rotating ring 8 sleeved on the peripheral surface of the guide vane rim 17, a rack 7 circumferentially and fixedly arranged on the peripheral surface of the rotating ring 8, and a driving mechanism 100 for driving the rotating ring 8 to rotate; each movable guide blade 11 is provided with a central shaft extending along the radial direction of the guide vane hub 13, one end of each movable guide blade 11 is hinged with the guide vane hub 13, the other end of each movable guide blade extends to the guide vane wheel rim 17, a rigid shaft 10 is arranged in each movable guide blade along the longitudinal direction, each rigid shaft 10 sequentially penetrates through the guide vane wheel rim 17 and the rotating ring 8 from inside to outside and is connected with a gear 9, and each gear 9 is meshed with the rack 7; when the driving mechanism 100 drives the rotating ring 8 to rotate, the rack 7 fixed to the rotating ring 8 drives each gear 9 to rotate and drives each movable guide vane 11 to change the included angle with the corresponding central shaft through the rigid shaft 10, thereby realizing the angle adjustment of the adjustable straight guide vanes.
Each of the drive mechanisms 100 includes: the worm gear mechanism comprises a fan-shaped worm wheel 6 fixedly arranged on the outer surface of a rotating ring 8, a support 4 fixedly arranged on the outer surface of the rotating ring 8, a worm 5 arranged on the support 4 and meshed with the fan-shaped worm wheel 6, sleeves 3 respectively and fixedly arranged at two ends of the support 4 and used for limiting two ends of the worm 5, and a motor 1 connected with one end of the worm 5 and used for driving the worm 5 to rotate. The two sleeves 3 are respectively sleeved at two ends of a worm 5 and used for preventing the worm 5 from moving back and forth, one end of the worm 5 is connected with a motor 1 through a coupler 2, the worm 5 rotates along with the motor 1 when the motor 1 rotates, the worm 5 rotates to drive a sector worm wheel 6 to rotate, the sector worm wheel 6 and a rack 7 are both fixedly connected to a rotating ring 8 in a welding mode, and the sector worm wheel 6 and the rack 7 can rotate around a guide vane rim 17 of a rear adjustable straight guide vane 21 or around a guide vane rim 17 of a front adjustable straight guide vane 23 synchronously with the rotating ring 8; the rack 7 is a circular rack, and the rotation of the rack 7 can drive the gear 9 which is in contact with the rack 7 to rotate under the gear meshing action between the sector gear 6 and the rack 7; each rigid shaft 10 is fixedly connected with a gear 9 through a bolt, each rigid shaft 10 is fixedly welded with a movable guide vane 11, the rotation of each gear 9 can drive the rigid shaft 10 connected with the gear 9 to rotate, and the rotation of each rigid shaft 10 can drive the movable guide vane 11 welded with the corresponding rigid shaft 10 to rotate; each movable guide vane 11 is hinged with a guide vane hub 13 through a rotary disc 12, each rotary disc 12 is welded with the movable guide vane 11, and each rotary disc 12 is hinged on the guide vane hub 13, so that the included angle between each movable guide vane 11 and the corresponding central shaft can be changed; besides, a gap is reserved between the movable guide blade 11 and the side of the guide vane wheel hub 13, and the surface of one end, close to the inner side of the guide vane wheel rim 17, of the movable guide blade 11 is designed to be a spherical surface 14, so that the movable guide blade 11 can conveniently rotate in the guide vane wheel rim 17, and the purpose of adjusting the blade angle of the rear adjustable straight guide blade 21 or the front adjustable straight guide blade 23 is achieved. Fixed straight guide blades 19 are welded between the guide vane rim 17 and the guide vane hub 13, and the fixed straight guide blades 19 are used for supporting and fixing. The bottom of each gear 9 is provided with a dial 15, the dial 15 is used for reading and displaying the included angle between each movable guide vane 11 and the corresponding central shaft, and the required angle of the straight guide vane can be adjusted when the rear adjustable guide vane 21 or the front adjustable guide vane 23 runs by controlling the starting and stopping of the motor 1.
The guide vane rim 17 is correspondingly provided with a hole for each rigid shaft 10 to pass through, so that the rigid shaft 10 is exposed outside the guide vane rim 17, a sealing seat 16 is arranged at the position of the rigid shaft 10 exposed outside the guide vane rim 17, and a mechanical seal is arranged in the sealing seat 16 to prevent water leakage from affecting external parts.
When the angle of the movable guide vane 11 needs to be adjusted, the worm 5 is driven by the rotation of the motor 1, the worm 5 can drive the sector worm wheel 6 to rotate, and the sector worm wheel 6, the rack 7 and the rotary ring 8 can synchronously rotate around the outer side of the guide vane rim 17; through the gear meshing action between the rack 7 and the gear 9, the rotation of the rack 7 can drive the synchronous motion of a plurality of gears 9 on the rear adjustable guide vane 21 or the front adjustable guide vane 23; the rotation of the gear 9 drives the corresponding rigid shaft 10 to rotate, and the corresponding movable guide vane 11 rotates synchronously with the rigid shaft 10. The rotation of the motor 1 is controlled to simultaneously increase or decrease the angle of the 5 movable guide vanes 11, and the rotation of the motor 1 is stopped when the angle required for operation is reached by observing the pointer of the dial 15.
In addition, the worm 5 has a helix angle and a friction angle, the helix angle is smaller than the friction angle, the worm 5 has self-locking performance, and in the process that the water pump runs and water flow impacts the guide vane at high speed, the movable guide vane 11 of the rear adjustable straight guide vane 21 or the front adjustable straight guide vane 23 cannot rotate due to the self-locking characteristic of the worm 5.
In the rear adjustable guide vane 21, the guide vane rim 17 is set as a rear adjustable guide vane rim 31, the guide vane hub 13 is set as a rear adjustable guide vane hub 30, the fixed straight guide vane 19 is set as a rear fixed straight guide vane 28, and the adjustable straight guide vane is set as a rear adjustable straight guide vane 29. The rear adjustable guide vane 21 divides a fixed straight guide vane in the prior art into two straight guide vanes, namely a rear fixed straight guide vane 28 and a rear adjustable straight guide vane 29, the rear fixed straight guide vane 28 and the rear adjustable straight guide vane 29 are distributed according to a certain proportion and are respectively and uniformly distributed on the peripheral surface of a rear adjustable guide vane hub 30 in the circumferential direction, two ends of the rear fixed straight guide vane 28 are respectively welded between the rear guide vane hub 30 and a rear guide vane flange 31 to be used as a support piece, the rear adjustable guide vane hub 30, the fixed straight guide vane 28 and the rear adjustable guide vane flange 31 are connected into a whole through welding and are used for respectively fixing the rear guide vane hub 30 and the rear guide vane flange 31, and the rigidity requirement of the rear adjustable guide vane 21 is met.
The central axis of the rear adjustable straight guide vane 29 is set as a rear central axis 41, the rear adjustable straight guide vane 29 rotates around the rear central axis 41, the included angle between the rear adjustable straight guide vane 29 and the rear central axis 41 in the axial direction is the angle adjusted by the rear adjustable straight guide vane 29, the included angle between the rear adjustable straight guide vane 29 and the rear central axis 41 ranges from minus 30 degrees to plus 30 degrees, and the angle of the rear fixed straight guide vane 28 is 0 degree. The rear adjustable straight guide vane 29 can drive the worm 5 to rotate under the driving of the motor 1, the gear 9 and the rigid shaft 10 are driven to rotate through the contact action of the worm 5 and the fan-shaped turbine 6, the rigid shaft 10 and the corresponding movable guide vane 11 rotate together, and therefore the movable guide vane 11 rotates relative to the corresponding rear central shaft 41, and the required angle adjustment of the rear adjustable straight guide vane 29 is realized; the motor 1 is controlled to start and stop by observing the pointer of the dial 15 at the bottom of the gear 9, so that the angle required by the operation of the bidirectional submersible tubular pump is achieved, namely the angle between the rear adjustable straight guide vane 29 and the rear central shaft 41 is adjusted by controlling the motor 1.
In the front adjustable guide vane 23, the guide vane rim 17 is set as a front adjustable guide vane rim 35, the guide vane hub 13 is set as a front adjustable guide vane hub 36, the fixed straight guide vane 19 is set as a front fixed straight guide vane 38, and the adjustable straight guide vane is set as a front adjustable straight guide vane 37. The front adjustable guide vane 23 divides a fixed straight guide vane in the prior art into two straight guide vanes, namely a front fixed straight guide vane 38 and a front adjustable straight guide vane 37, the front fixed straight guide vane 38 and the front adjustable straight guide vane 37 are distributed according to a certain proportion and are uniformly distributed on the outer peripheral surface of the front adjustable guide vane hub 36 in the circumferential direction, the front fixed straight guide vane 38 is welded between the fixed front guide vane hub 36 and the front guide vane rim 35 and is used for fixing the front guide vane hub 36 and the front guide vane rim 35 respectively so as to meet the rigidity requirement of the front adjustable guide vane 23; the central axis of the front adjustable straight guide blade 37 is set as a front central axis 43, the front adjustable straight guide blade 37 rotates relative to the front central axis 43, the included angle between the front adjustable straight guide blade 37 and the front central axis 43 in the axial direction is the angle adjusted by the adjustable straight guide blade 37, and the included angle between the front adjustable straight guide blade 37 and the front central axis 43 ranges from-30 degrees to +30 degrees; the angle of the leading fixed straight guide vane 38 is 0 °.
The front adjustable straight guide vane 37 can drive the worm 5 to rotate under the driving of the motor 1, the gear 9 and the rigid shaft 10 are driven to rotate through the contact action of the worm 5 and the fan-shaped turbine 6, the rigid shaft 10 and the corresponding movable guide vane 11 rotate together, the movable guide vane 11 rotates relative to the front central shaft 42, and the angle adjustment of the front adjustable straight guide vane 37 is realized; the motor 1 is controlled to start and stop by observing the pointer of the dial 15 at the bottom of the gear 9, so that the angle required by the running of the bidirectional submersible tubular pump is achieved, namely the change of the included angle between the front adjustable straight guide vane 37 and the front central shaft 42 is realized by controlling the motor 1.
The bulb body 20, the rear adjustable guide vane 21, the impeller 22, the front adjustable guide vane 23 and the straight cone section 24 are assembled from back to front, the front end of the bidirectional submersible through-flow pump is provided with a water inlet flow passage, and the rear end of the bidirectional submersible through-flow pump is provided with a water outlet flow passage; the bulb body 20 comprises a first shell 27, a supporting piece 26 and a second shell 25, the first shell 27 is arranged on the rear side of the rear adjustable guide vane 21 and is connected with the impeller 22 through a flange, the first shell 27 is used for placing the motor 1 for the motor shell, the second shell 25 is arranged on the rear side of the first shell 27, the second shell 25 is used for the bulb body shell, the supporting piece 26 is welded between the first shell 27 and the second shell 25, the bulb body 20 is connected with the water outlet flow channel and the rear adjustable guide vane 21 through the flange, and the bulb body 20 is used for fixing. The impeller 22 comprises an impeller hub 33, an impeller rim 34 coaxially mounted outside the impeller hub 33, and bidirectional blades 32 uniformly distributed on the impeller hub 33. The straight cone section 24 comprises a third shell 40 which is arranged on the front side of the front adjustable guide vane 23 and is connected with the water inlet flow channel and the front adjustable guide vane 23 through flanges, and a water guide cone 39 welded on the front side of the front adjustable guide vane wheel hub 36, wherein the third shell 40 plays a role in transition for the straight cone section shell, and the water guide pile 39 plays a role in transition water flow.
When the bidirectional submersible perfusion pump is operated from front to back in a forward direction, the angle of the adjustable straight guide blade 37 of the front adjustable guide blade 23 is adjusted to be 0 degree, and the angle of the adjustable straight guide blade 29 of the rear adjustable guide blade 21 is adjusted to be a certain design angle under the operation working condition; when the bidirectional submersible tubular pump runs reversely from back to front, the angle of the adjustable straight guide blade 29 of the rear adjustable guide blade 21 is adjusted to be 0 degree, and the angle of the adjustable straight guide blade 37 of the front adjustable guide blade 23 is adjusted to be a certain design angle under the operation working condition.
According to the bidirectional submersible perfusion pump, the adjustable straight guide blades of any one of the rear adjustable guide blades 21 or the front adjustable guide blades 23 are structurally designed, each adjustable straight guide blade is provided with a central shaft extending along the radial direction of the guide hub 13, each adjustable straight guide blade comprises a plurality of movable guide blades 11, a rigid shaft 10, gears 9, a rotating ring 8, racks 7 and a driving mechanism 100, the driving mechanism 100 is used for driving the rotating ring 8 to rotate, the rotating ring 8 drives the racks 7 to be meshed with the gears 9, and each gear 9 drives the corresponding rigid shaft and the corresponding movable guide blade 11 to rotate, so that the included angle between each movable guide blade 11 and the corresponding central shaft is changed, and the effect of adjusting the angle of the adjustable straight guide blades is achieved. The bidirectional submersible tubular pump is reasonable in structure and convenient to use, and the angle of the adjustable straight guide blade is adjusted by utilizing the adjustability of the included angle between the movable guide blade 11 and the corresponding central shaft in the front adjustable guide blade 23 or the rear adjustable guide blade 21, so that the requirements of forward and reverse operation are met, the forward and reverse operation efficiency is improved, the optimal working condition during the operation of the bidirectional submersible tubular pump is achieved, and the flow state of water flow is improved.
Claims (10)
1. A bi-directional submersible tubular pump, comprising: the device comprises an impeller (22), a rear adjustable guide vane (21) coaxially arranged at the rear side of the impeller (22), and a front adjustable guide vane (23) coaxially arranged at the front side of the impeller (22);
any one of the rear adjustable guide vane (21) and the front adjustable guide vane (23) comprises a guide vane wheel rim (17), a guide vane wheel hub (13) coaxially sleeved in the guide vane wheel rim (17), a fixed straight guide vane (19) and an adjustable straight guide vane; the fixed straight guide blade (19) is fixedly arranged between the guide vane wheel hub (13) and the guide vane wheel rim (17);
each adjustable straight guide blade comprises a plurality of movable guide blades (11) distributed between a guide vane wheel rim (17) and a guide vane wheel hub (13), a rotating ring (8) sleeved on the outer peripheral surface of the guide vane wheel rim (17), a rack (7) circumferentially and fixedly arranged on the outer peripheral surface of the rotating ring (8), and a driving mechanism (100) for driving the rotating ring (8) to rotate; each adjustable straight guide vane has a central axis extending in the radial direction of the guide vane wheel hub (13); one end of each movable guide blade (11) is hinged with the guide blade wheel hub (13), the other end of each movable guide blade extends to the guide blade wheel rim (17), a rigid shaft (10) is arranged inside each movable guide blade (11) along the longitudinal direction, each rigid shaft (10) penetrates through the guide blade wheel rim (17) and the rotating ring (8) from inside to outside and then is connected with a gear (9), and each gear (9) is meshed with the rack (7); when the driving mechanism (100) drives the rotating ring (8) to rotate, the rack (7) is meshed with the gear (9) and drives the corresponding movable guide vane (11) to change the included angle with the central shaft through the rigid shaft (10).
2. The bidirectional submersible tubular pump according to claim 1, wherein each of the moving guide vanes (11) has an angle ranging from-30 ° to 30 ° with respect to the corresponding central axis, and the fixed straight guide vane (19) has a rotation angle of 0.
3. The bidirectional submersible tubular pump according to claim 2, characterized in that when the bidirectional submersible tubular pump is operated from front to back, the included angle between each movable guide vane (11) of the adjustable straight guide vanes of the front adjustable guide vanes (23) and the corresponding central shaft is 0 °, and the included angle between each movable guide vane (1) of the adjustable straight guide vanes of the back adjustable guide vanes (21) and the corresponding central shaft is a certain angle value; when the bidirectional submersible tubular pump runs from back to front, the included angle between each movable guide blade (11) of the adjustable straight guide blade of the rear adjustable guide blade (21) and the corresponding central shaft is 0 degree, and the included angle between each movable guide blade (11) of the adjustable straight guide blade of the front adjustable guide blade (23) and the corresponding central shaft is a certain angle value.
4. The bidirectional submersible tubular pump according to claim 1, characterized in that the drive mechanism (100) comprises a sector turbine (6), a worm (5), a support (4), two sleeves (3), a motor (1); fan-shaped turbine (6), support (4) set firmly respectively on swivel (8) surface, worm (5) install on support (4) and with fan-shaped turbine (6) meshing, two sleeves (3) are installed on support (4) and are located worm (5) both ends surface respectively and be used for spacing worm (5) both ends, motor (1) are connected worm (5) through shaft coupling (2) and are used for driving worm (5) to rotate.
5. The pump of claim 4, wherein a dial (15) is mounted at the bottom of each gear (9), and each dial (15) is used for displaying the included angle between the corresponding movable guide vane (11) and the central shaft.
6. The pump of claim 1, wherein the surface of one end of each moving guide blade (11) close to the inner side of the guide blade rim (17) is a spherical surface (14).
7. A bi-directional submersible through-flow pump according to claim 1, characterized in that each rigid shaft (10) is provided with a sealing seat (16) at a position extending outside the guide vane rim (17) for mechanical sealing.
8. The bi-directional submersible tubular pump according to claim 1, further comprising a bulb (20) coaxially mounted at the rear side of the rear adjustable guide vane (21), a straight cone section (24) coaxially mounted at the front side (23) of the front adjustable guide vane; the bulb body (20) comprises a first shell (27) arranged on the rear side of the rear adjustable guide vane (21), a second shell (25) arranged on the rear side of the first shell (27), and a support piece (26) welded between the first shell (27) and the second shell (25); the straight cone section (24) comprises a third shell (40) arranged on the front side of the front adjustable guide vane (23) and a water guide pile (39) welded on the front side of a guide vane wheel hub (13) of the front adjustable guide vane (23); and the impeller (22) comprises an impeller hub (33), an impeller rim (34) coaxially mounted on the periphery of the impeller hub (33), and bidirectional blades (32) circumferentially distributed on the impeller hub (33).
9. The bi-directional submersible tubular pump according to claim 1, characterized in that each fixed straight guide vane (19) is welded correspondingly between the guide vane hub (13) and the guide vane rim (17); one end of each rigid shaft (10) is welded with the corresponding movable guide vane (11), and the other end of each rigid shaft is fixedly connected with the corresponding gear (9) through a bolt; the rack (7) is welded on the outer surface of the rotating ring (8).
10. The bi-directional submersible tubular pump according to claim 4, characterized in that the worm (5) has a lead angle and a friction angle, the lead angle being smaller than the friction angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210519446.XA CN114837954A (en) | 2022-05-13 | 2022-05-13 | Bidirectional submersible tubular pump |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210519446.XA CN114837954A (en) | 2022-05-13 | 2022-05-13 | Bidirectional submersible tubular pump |
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| CN114837954A true CN114837954A (en) | 2022-08-02 |
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| CN202210519446.XA Pending CN114837954A (en) | 2022-05-13 | 2022-05-13 | Bidirectional submersible tubular pump |
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