CN208702607U - A kind of regulating mechanism of turbine type high-pressure pump inlet flow rate - Google Patents
A kind of regulating mechanism of turbine type high-pressure pump inlet flow rate Download PDFInfo
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- CN208702607U CN208702607U CN201821478280.7U CN201821478280U CN208702607U CN 208702607 U CN208702607 U CN 208702607U CN 201821478280 U CN201821478280 U CN 201821478280U CN 208702607 U CN208702607 U CN 208702607U
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- guide vane
- gear
- gear wheel
- pinion gear
- abrasion
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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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Abstract
The utility model discloses a kind of regulating mechanisms of turbine type high-pressure pump inlet flow rate, comprising: pinion gear, gear wheel, support shaft, abrasion-proof bearing bush, circlip, movable guide vane, guide vane teunnion, movable guide vane, rack gear.The utility model uses the technical solution of the regulating mechanism of the turbine type high-pressure pump inlet flow rate supported based on gap, abrasion-proof bearing bush can guarantee when starting and load fluctuation amplitude are larger, support shaft is avoided directly to contact with gear wheel, generate abrasion, the dimensional accuracy of axis, hole is reduced, and there is certain buffer function.The beneficial effect supported using the gap of preset clearance, so that gear wheel self-centering, offsets the adverse effect that gear wheel caused by various errors and pinion gear engagement place active force differ greatly, to reduce the probability of gear failure.A kind of regulating mechanism for turbine type high-pressure pump inlet flow rate provided by the utility model has degree of regulation height, the anti abrasive advantage of gear.
Description
Technical field
The utility model relates to reverse osmosis seawater desalting technical field of energy recovery, and in particular to a kind of turbine type high-pressure pump
The regulating mechanism of inlet flow rate.
Background technique
Reverse osmosis seawater desalting is one of the mainstream technology of current sea water desalination, and a major issue of technology development is
How energy consumption and cost reduced.Reverse osmosis seawater desalting process need to consume a large amount of electric energy and promote intake pressure to overcome the infiltration of water
The concentrated water overbottom pressure of pressure, reverse osmosis membrane discharge is up to 5.5~6.5MPa, calculates according to 40% rate of recovery, in the strong brine of discharge also
The feed water pressure energy for containing about 60% becomes the recycling of this part energy that reverse osmosis seawater can be greatly reduced into water energy
The energy consumption of desalination, and the realization of this target depends on the utilization of Energy Recovery Technology.It is big by the application of energy recycle device
Width reduces the production cost of desalination water.Therefore, energy regenerating becomes one of the key technology in reverse osmosis seawater desalination system.
Hydraulic turbine high-pressure pump is one kind of turbine type energy-recovering machine, and structure is simple, and turbo wheel and impeller of pump are logical
It crosses a common axis to connect together, the perfection realized between hydraulic turbine and pump rotor couples, can be by the high pressure of turbine side
The energy of liquid is directly translated into the energy of pump side low pressure liquid, has obviously structural advantage.
In the operational process of turbine type high-pressure pump, when actual flow generates variation, the efficiency of turbine also can be with changing
Become, after certain ratio of flow-reduction to best efficiency point, the velocity of rotation that turbine does not reach requirement can not even more recycle height
The energy of press liquid.For this deficiency, early in eighties of last century the fifties, NASA attempts to add in air compressor import
Movable guide vane, to improve range of flow, prevent surge.But movable guide vane applies few, master on turbine type energy-recovering machine
The technology for wanting reason to be that turbine type energy-recovering machine manufactures and designs is also immature.Notification number is the patent of 102900479 B of CN
Application proposes a kind of variable-nozzle turbocharger regulating mechanism being integrated on turbine shroud, can be used for automobile-used variable-nozzle
Turbo-charger technical field.Although in air compressor, the hydraulic turbine, high-pressure pump there are also the regulating mechanism of movable guide vane,
But the problems such as that there are degree of regulation is not high for these regulating mechanisms, and vibration resistance is poor, and gear damage is serious, rotation is difficult, Jin Erwu
The high-precision that method completes movable guide vane is adjusted.
Summary of the invention
The utility model is intended to provide a kind of regulating mechanism of turbine type high-pressure pump inlet flow rate, to solve to adjust machine at present
The problems such as that there are degree of regulation is not high for structure, and vibration resistance is poor, and gear damage is serious.
The regulating mechanism of the turbine type high-pressure pump inlet flow rate of the utility model, comprising: pinion gear, gear wheel, support shaft,
Abrasion-proof bearing bush, circlip, movable guide vane, guide vane teunnion, rack gear.
The gear wheel is spoke type gear, and the quantity of gear wheel spoke is 4-6, on the circumference outer ring of gear wheel
Even 8-13 pinion gear, gear wheel and the pinion gear of being distributed with is sequentially connected by tooth form external toothing effect, gear wheel and pinion gear
It is equal to meet modulus, pressure angle, gear wheel is provided centrally with mounting hole, and the aperture of the mounting hole of gear wheel is D2；
The quantity of the rack gear is 1, and rack gear and a pinion gear are engaged effect transmission connection；
The pinion gear is connect by guide vane teunnion with movable guide vane, and the pinion gear and guide vane teunnion are coaxial, and the two of guide vane teunnion
End is equipped with screw thread, and one end of guide vane teunnion is inserted into the screwed hole of centre of pinion gear, and the movable guide vane is in sheet pointed at both ends, living
Dynamic guide vane is provided with threaded hole, and the centre bore of the pinion gear is provided with screw thread, the other end insertion movable guide vane of guide vane teunnion
In threaded hole, the centre bore of the guide vane teunnion is provided with screw thread, and the screw thread of guide vane teunnion and the screwed hole of centre of pinion gear, activity are led
The threaded hole of leaf matches；
Abrasion-proof bearing bush is housed, abrasion-proof bearing bush and support shaft are interference fitted, abrasion-proof bearing bush between the gear wheel and support shaft
Outer diameter be D1, gear wheel be axially fixed in support shaft by the shoulder and circlip of support shaft, abrasion-proof bearing bush
Gap is reserved between outer diameter and the mounting hole of gear wheelδ,δIt is a sky for keeping for the centering of gear wheel self-balancing to reserve
Between,δ=(D 2-D 1)/2=(1~0.5)Δ,ΔBacklash is integrated for maximum,ΔIt is profile error, center away from error, base pitch error
Project to the algebraical sum of the length in path of contact.
The utility model has the advantages that compared with prior art
The utility model proposes turbine type high-pressure pump inlet flow rate regulating mechanism, pass through pull rack gear, one and tooth
Power source is transmitted on gear wheel by the pinion gear of item connection, is uniformly distributed by the drive of the engagement of gear wheel and pinion gear
Pinion gear on gear wheel circumference, pinion gear are connect by guide vane teunnion with movable guide vane, and then realize the synchronization of movable guide vane
The movement of movable guide vane aperture regulation is completed in rotation.
The utility model uses the technical solution of the regulating mechanism of the turbine type high-pressure pump inlet flow rate supported based on gap,
Abrasion-proof bearing bush can guarantee to avoid support shaft directly to contact with gear wheel when starting and load fluctuation amplitude are larger, produce
Raw abrasion reduces the dimensional accuracy of axis, hole, and has certain buffer function.Usual axis and brearing bore, bearing outer ring and tooth
Wheel inner hole is interference fit, if being exactly the gap of rolling element and inner ring, outer ring if considering gap, this gap is too small, insufficient
It is felt relieved with allowing gear self-balancing.The beneficial effect supported using the gap of preset clearance, so that gear wheel self-centering, offsets
The adverse effect that gear wheel caused by various errors and pinion gear engagement place active force differ greatly, to reduce gear failure
Probability.A kind of regulating mechanism for turbine type high-pressure pump inlet flow rate provided by the utility model has degree of regulation height, tooth
Take turns anti abrasive advantage.
Detailed description of the invention
Fig. 1 is the structural representation front view with movable guide vane without rack gear of the utility model；
Fig. 2 is the structural representation left view without movable guide vane without rack gear of the utility model；
In figure: 1. pinion gears, 2. gear wheels, 3. support shafts, 4. abrasion-proof bearing bush, 5. circlips, 6. movable guide vanes.
Specific embodiment
The utility model is further illustrated below by embodiment, but is not limited to following embodiment.
Embodiment: as shown in Figure 1 and 2, the regulating mechanism of turbine type high-pressure pump inlet flow rate, comprising: pinion gear 1, gear wheel
2, support shaft 3, abrasion-proof bearing bush 4, circlip 5, movable guide vane 6, guide vane teunnion, rack gear.
The gear wheel 2 is spoke type gear, and the quantity of 2 spoke of gear wheel is 4, on the circumference outer ring of gear wheel 2
It is evenly distributed with 8 pinion gears 1, gear wheel 2 and pinion gear 1 to be sequentially connected by tooth form external toothing effect, gear wheel 2 and small tooth
It is equal that wheel 1 meets modulus, pressure angle, and gear wheel 2 is provided centrally with mounting hole, and the aperture of the mounting hole of gear wheel 2 is 20mm；
The quantity of the rack gear is 1, and rack gear and a pinion gear 1 are engaged effect transmission connection；
The pinion gear 1 is connect by guide vane teunnion with movable guide vane 6, and the pinion gear 1 and guide vane teunnion are coaxial, guide vane teunnion
Both ends are equipped with screw thread, and one end of guide vane teunnion is inserted into the screwed hole of centre of pinion gear 1, and the movable guide vane 6 is in piece pointed at both ends
Shape, movable guide vane 6 are provided with threaded hole, and the centre bore of the pinion gear 1 is provided with screw thread, the other end insertion activity of guide vane teunnion
In the threaded hole of guide vane 6, the centre bore of the guide vane teunnion is provided with screw thread, the screw thread of guide vane teunnion and the center screw thread of pinion gear 1
Hole, movable guide vane 6 threaded hole match；
Abrasion-proof bearing bush 4 is housed, abrasion-proof bearing bush 4 and support shaft 3 are interference fitted, wear-resisting between the gear wheel 2 and support shaft 3
The outer diameter of bearing shell 4 is 19mm, and gear wheel 2 be axially fixed in support shaft 3 by the shoulder and circlip 5 of support shaft 3,
It is 0.5mm that gap is reserved between the outer diameter of abrasion-proof bearing bush 4 and the mounting hole of gear wheel 2.
The present embodiment has the advantages that the present embodiment uses the turbine supported based on gap compared with prior art
The technical solution of the regulating mechanism of formula high-pressure pump inlet flow rate, abrasion-proof bearing bush 4 can guarantee starting and load fluctuation amplitude compared with
When big, support shaft 3 is avoided directly to contact with gear wheel 2, generate abrasion, reduce the dimensional accuracy of axis, hole, and had certain
Buffer function.Usual axis and brearing bore, bearing outer ring and bore are interference fits, if being exactly if considering gap
Rolling element and inner ring, outer ring gap, this gap is too small, is not enough to allow gear self-balancing and feels relieved.GapδExactly keep for
The space that the centering of 2 self-balancing of gear wheel is reserved.The beneficial effect supported using the gap of preset clearance, so that gear wheel
The adverse effect that gear wheel 2 caused by various errors and 1 engagement place active force of pinion gear differ greatly is offset in 2 self-centerings, from
And reduce the probability of gear failure.A kind of regulating mechanism for turbine type high-pressure pump inlet flow rate provided in this embodiment, tool
There are degree of regulation height, the anti abrasive advantage of gear.
The above, only specific embodiment of the utility model cannot limit the range that the utility model is implemented with it,
So the displacement of its equivalent assemblies, or according to equivalent variations made by the utility model patent protection scope and modification, all should still belong to
In the scope that the utility model is covered.
Claims (2)
1. a kind of regulating mechanism of turbine type high-pressure pump inlet flow rate characterized by comprising pinion gear, gear wheel, support
Axis, abrasion-proof bearing bush, circlip, movable guide vane, guide vane teunnion, rack gear；
The gear wheel is spoke type gear, and the quantity of gear wheel spoke is 4-6, is uniformly divided on the circumference outer ring of gear wheel
It is furnished with 8-13 pinion gear, gear wheel and pinion gear to be sequentially connected by tooth form external toothing effect, gear wheel and pinion gear meet
Modulus, pressure angle are equal, and gear wheel is provided centrally with mounting hole, and the aperture of the mounting hole of gear wheel is D2；
Abrasion-proof bearing bush is housed, abrasion-proof bearing bush and support shaft are interference fitted, outside abrasion-proof bearing bush between the gear wheel and support shaft
Diameter is D1, and gear wheel be axially fixed in support shaft by the shoulder and circlip of support shaft, the outer diameter of abrasion-proof bearing bush
Gap is reserved between the mounting hole of gear wheelδ,δ=(D 2-D 1)/2=(1~0.5)Δ,ΔBacklash is integrated for maximum,Δ
The algebraical sum of the length in path of contact is projected to away from error, base pitch error for profile error, center；
The pinion gear is connect by guide vane teunnion with movable guide vane, and the pinion gear and guide vane teunnion are coaxial, and the both ends of guide vane teunnion are set
There is screw thread, one end of guide vane teunnion is inserted into the screwed hole of centre of pinion gear, and the movable guide vane is in sheet pointed at both ends, and activity is led
Leaf is provided with threaded hole, and the centre bore of the pinion gear is provided with screw thread, the screw thread of the other end insertion movable guide vane of guide vane teunnion
In hole, the centre bore of the guide vane teunnion is provided with screw thread, the screwed hole of centre of the screw thread of guide vane teunnion and pinion gear, movable guide vane
Threaded hole matches.
2. the regulating mechanism of turbine type high-pressure pump inlet flow rate according to claim 1, which is characterized in that the rack gear
Quantity is 1, and rack gear and a pinion gear are engaged effect transmission connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821478280.7U CN208702607U (en) | 2018-09-11 | 2018-09-11 | A kind of regulating mechanism of turbine type high-pressure pump inlet flow rate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821478280.7U CN208702607U (en) | 2018-09-11 | 2018-09-11 | A kind of regulating mechanism of turbine type high-pressure pump inlet flow rate |
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| CN208702607U true CN208702607U (en) | 2019-04-05 |
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| CN201821478280.7U Active CN208702607U (en) | 2018-09-11 | 2018-09-11 | A kind of regulating mechanism of turbine type high-pressure pump inlet flow rate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108979947A (en) * | 2018-09-11 | 2018-12-11 | 国家海洋局天津海水淡化与综合利用研究所 | A kind of regulating mechanism of turbine type high-pressure pump inlet flow rate |
-
2018
- 2018-09-11 CN CN201821478280.7U patent/CN208702607U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108979947A (en) * | 2018-09-11 | 2018-12-11 | 国家海洋局天津海水淡化与综合利用研究所 | A kind of regulating mechanism of turbine type high-pressure pump inlet flow rate |
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