CN105526038A - Hydraulic motor - Google Patents

Hydraulic motor Download PDF

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Publication number
CN105526038A
CN105526038A CN201610087942.7A CN201610087942A CN105526038A CN 105526038 A CN105526038 A CN 105526038A CN 201610087942 A CN201610087942 A CN 201610087942A CN 105526038 A CN105526038 A CN 105526038A
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CN
China
Prior art keywords
water
stator
rotor
motor
turbine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201610087942.7A
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Chinese (zh)
Inventor
张志峰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huizhou Laihui Cleaning Equipment Co Ltd
Original Assignee
Huizhou Laihui Cleaning Equipment Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huizhou Laihui Cleaning Equipment Co Ltd filed Critical Huizhou Laihui Cleaning Equipment Co Ltd
Priority to CN201610087942.7A priority Critical patent/CN105526038A/en
Publication of CN105526038A publication Critical patent/CN105526038A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B3/00—Machines or engines of reaction type; Parts or details peculiar thereto
    • F03B3/12—Blades; Blade-carrying rotors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B3/00—Machines or engines of reaction type; Parts or details peculiar thereto
    • F03B3/12—Blades; Blade-carrying rotors
    • F03B3/121—Blades, their form or construction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B3/00—Machines or engines of reaction type; Parts or details peculiar thereto
    • F03B3/16—Stators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B3/00—Machines or engines of reaction type; Parts or details peculiar thereto
    • F03B3/16—Stators
    • F03B3/18—Stator blades; Guide conduits or vanes, e.g. adjustable
    • 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)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Hydraulic Turbines (AREA)
  • Hydraulic Motors (AREA)

Abstract

The invention discloses a small hydraulic motor, which uses clean water to drive a turbine to work and belongs to the technical field of fluid mechanics and turbine vane type machines. The motor comprises a turbine stator, a turbine rotor, a main shaft, a support bearing, a sealing piece, a shell and an end cover. Working medium can be recycled. The stator, rotor turbine pair using the clean water with the working pressure of less than 700 kPa is arranged in the motor. The rated rotation speed is 1250 r/min, the rated power is 60 w, the pressure drop is about 100 kPa, the power output is smooth, the low-speed torque is large, and the operation is stable. The hydraulic motor can be used as the general power source, and fills the gap in the field of application of the hydraulic motor which can be driven by the low-pressure water. The motor uses the oil-water separation type structure, so that the service life is long, the cost is low and the structure is reliable. The municipal tap water can be used as the power source to drive the motor, and the hydraulic motor can be widely applied in some special fields such as solar panels cleaning, chemical industry, food, medicine and underwater cleaning.

Description

A kind of water motor
Technical field
The present invention relates to a kind of oil hydraulic motor, especially a kind of employing cleans Natural Water (containing seawater and fresh water) carries out work motor as hydraulic medium driving turbine, and it belongs to the technical field of fluid mechanics and vane type of turbine machinery.
Background technique
The turbomachinery that the transformation of energy of current is in the dynamic power machine of rotating mechanical energy and fluid machinery, have a long history, as reaction water turbine generator, application widely, its water power calculation efficiency is generally all more than more than 90%, its utilize water can theory and empirical correlation complete abundant, see CN1636111A document one.But it can be used as the power source of general dynamic source, especially miniaturization in addition to the generation of electricity, it is then rare to apply, such as in document " CN104179625A straighttube-type superminiature water turbine is see document two ", propose a kind of miniature turbomachinery being used for generating electricity, record by " embodiment " in this document
" providing certain pressure water stream with water pump to water turbine, control the flow by water turbine by valve, is 0.015m by the current total volume of water turbine 3, measure 0.015m 3current by water turbine needed time, and measure the rotating speed of water turbine
Embodiment 3, if runner diameter D1 is 22mm, water turbine entrance head is 3m, and hydroturbine water intake hole given flow is 4.10 × 10 -4m 3/ s, runner actual measurement rotating speed is 4000r/min, and turbine efficiency is 78.96% "
Data according to this, by water energy formula
Pm=9.8QH η [Q flow (cubic meters per second), H head (rice), η efficiency)]
Calculate that the output power of this device is maximum is no more than 9.5w, moment of torsion is not more than 0.02Nm, and power is less than normal, and performance is difficult to meet the usage requirement as power plant.And these device stator and rotor are side cantilever fixes, reliability, poor stability.
Retrieve visible hydro powered turbomachinery to use as general dynamic source, apply not extensive.Though water pressure plunger motor, hydraulic pressure sliding-vane motor etc. are more ripe abroad, complex structure, rotate contact segment and adopt water do friction media therefore have particular/special requirement to material, and general volume are large, cost is high.See CN102434382A document three.
Water motor can the another kind application of reference be the turbodrill that the industry such as oil drilling uses, and has more ripe application both at home and abroad; Turbodrill has the features such as moment of torsion is large, rotating speed is high, high temperature resistant, but its complex structure, volume is large, the life-span is low, and especially the secondary lubricant medium of its pivot friction is generally drilling mud, and tens to hundreds of hour just needs maintenance; Further, the general plural serial stage of turbodrill uses, and working medium is generally more than 10000kPa high-pressure slurry, is not suitable for adopting low pressure liquid, see document four, CN2339741Y document five.
Visible, described device is all improper, needs to find out on this basis more suitably structure structure, aerofoil profile size assembly method.
Summary of the invention
The problem to be solved in the present invention: provide a kind of low pressure clear water, the rated speed 1000 ~ 1500r/min that can use below 700kPa, the life-span is long, the miniature water force motor of output power 60w ~ 80w.
Technological scheme of the present invention is:
A kind of water motor, it at least comprises intake end cover , stator , motor casing , main shaft , rotor , water outlet end cap , key , circlip , Sealing , bearing , bearing cap , screw one , screw two , water intake , water outlet .
Motor casing has a water intake, at least one water outlet, and preferably, motor casing symmetry has two water outlets.
Intake end cover is fixedly mounted on motor casing one end; Water outlet end cap is fixedly mounted on the other end, and stator is fixedly mounted on intake end cover by interference fit; Rotor is arranged on axle by link, preferably, is connected and fixed is arranged on main shaft by key; Main shaft is by intake end cover, the interior bearing assemble installed of water outlet end cap in motor casing, and bearing is fixed by bearing cap; In intake end cover and water outlet end cap, water proof Sealing is installed, realizes bearing seal.Intake end cover, between water outlet end cap and motor casing, also there is Sealing.
After having assembled, cavity between motor casing and intake end cover, stator, rotor, water outlet end cap forms runner, liquid-working-medium with pressure enters runner from water intake, rotor is flow through with proper angle after stator water conservancy diversion, rotor is driven to drive main axis, export energy, liquid finally flows out from water outlet.
The difference of foundation material and processing technology, water outlet end cap and these two parts of stator can manufacture a part.
Duty parameter scope: as calculated, as the little 700kPa of working medium pressure, when namely working with the head of below 70m, obtain 60w ~ 80w output power, motor flow is 5 × 10 -4m 3/ s ~ 1.5 × 10 -3m 3between/s, in runner, flow velocity can meet the demands between 0.5m/s ~ 1.5m/s.
Runner base dimension:
The sectional dimension calculating runner according to fluid mechanics principle is:
Runner outside dimension, between 55mm ~ 95mm, preferably, is 78mm
Runner internal diameter size, between 45mm ~ 85mm, preferably, is 68mm
Namely stators and rotators outside dimension is identical, its preferred size, is 78mm
The root footpath of stators and rotators is also identical, its preferred size, is 68mm.
The aerofoil profile of stator, rotor:
The air foil shape of stator, rotor is made up of smoothed curve, and its aerofoil profile size, profile design are cores of the present invention, and small dimensional changes can affect water motor performance; When cross section of fluid channel amasss certain, the lobe numbers of stator and rotor worm gear pair is more, means and can catch more energy, but overstocked leaf grating itself can form the flowing of drag effects fluid.Therefore water motor needs to arrange suitable lobe numbers; The inlet/outlet structure angle of blade determines the secondary operating conditions of stator, rotor scroll, affects water power calculation efficiency; Under flow velocity one stable condition, the export structure angle of rotor is less, and direction of flow changes larger, and the ability obtaining fluid energy is stronger, and namely the output power of water motor is larger; But through this value of simulation calculation close to 4 oduring left and right, rotor water outlet end has started to occur obvious eddy current and the separation of flow, and display performance starts to reduce.For obtaining the good aerofoil profile parameter of combination property, have employed computational fluid mechanics and computer simulation technique, and by experiment, obtaining parameter as follows:
Blade quantity:
The ratio of stator vane quantity and rotor blade quantity is 2:1, the blade quantity of stator 10 ~ 14, preferably, and stator vane 12, rotor blade 6.
Stator vane height H=30mm, makeup of the imports angle a 2k=90 o, export structure angle a 1k=10 o.
Stator leading-edge radius r 1=0.4mm, trailing edge radius r 2=0.2mm
Rotor blade heights H=20mm, makeup of the imports angle β 1k=95 o, export structure angle β 2k=5 o
Rotor leading-edge radius r 1=2mm, trailing edge radius r 2=0.45mm
The distance of blade front and rear edge is called chord length,
Stator chord length=52.3mm, rotor chord length=23.1mm
Power output:
Main shaft two ends all can output loading, and when only needing one end outputting power, the main shaft the other end can not stretch out motor casing.
Material:
Above-mentioned part can be made up of any suitable material, and preferably, the material of motor casing is aluminum alloy; Preferably, stators and rotators material is Cuprum alloy or engineering plastics.
Beneficial effect
Due to not yet inquire use low-pressure water, with the document of structure of the present invention and adjoining dimensions or similar water motor or application, therefore the present invention provides a kind of low-pressure water, the moment of torsion output smoothing that can use similar municipal tap water first, large not easily stuck, the high speed of low speed torque is stablized, noise is low, the miniature water motor that structure is reliable, the life-span is long.
Accompanying drawing explanation
Fig. 1 is structural profile schematic diagram of the present invention.
Fig. 2 is runner schematic diagram of the present invention.
Fig. 3 is assembling exploded view of the present invention.
Fig. 4 is stator structure schematic diagram.
Fig. 5 is rotor structure schematic diagram.
Fig. 6 is stator and rotor vane airfoil profile Parameter Map, stator structure angle a 1k, a 2krepresent, rotor structure angle β 1k,
β 2k, front and rear edge radius r represents, blade height is H, and leaf grating spacing is T.
Fig. 7 is the flowpath pressure cloud charts that simulation calculation obtains, and its color represents pressure from high to low from deep to shallow.
Fig. 8 is the runner speed vector figure that simulation calculation obtains, and arrow represents fluid motion direction, and its color represents speed from low to high from deep to shallow.
Fig. 9 is experimental stand block diagram.
Figure 10 is Ben Mada output parameter contrast table, and predicted power, measured power, prediction moment of torsion, actual measurement moment of torsion are drawn by not isolabeling respectively.
Reference character in figure:
Intake end cover , stator , motor casing , main shaft , rotor , water outlet end cap , key , circlip , Sealing , bearing , bearing cap , screw one , screw two , water intake , water outlet .
Embodiment
Below in conjunction with drawings and Examples the present invention done and describe in detail further, but embodiments of the present invention are not limited thereto.
See the water motor of Fig. 1, Fig. 2, Fig. 3 assembling, comprise intake end cover , stator , motor casing , main shaft , rotor , water outlet end cap , key , circlip , Sealing , bearing , bearing cap , screw one , screw two , water intake , water outlet .
Its stator and rotor have structure as shown in Figure 4, Figure 5.The worm gear pair of its composition has parameter as shown in Figure 6.
Operating mode: normal temperature, working medium: clear water, flow 1.0 × 10 -3m 3/ s, water intake hydraulic pressure 300kPa
Under this operating mode, first obtain the prediction Operational Limits of water motor with Fluid Computation Mechanics Simulation software:
Fig. 7 flowpath pressure cloud charts shows: runner internal pressure distribution reasonable, pressure reduction are even, form the larger area uniform pressure district of steady and continuous in pressure side, and display stator water conservancy diversion angle elementary sum is suitable, rotor reasonable stress, meets designing requirement.
Fig. 8 runner fluid velocity vectors distribution map shows: velocity attitude meets designing requirement, velocity variations is level and smooth, and substantially do not have eddy current, the separation of flow is also less, and separation of flow region is not near rotor surface.Show that the energy loss of runner is little, turbine rotation is steady.
In order to implement the present invention, carry out platform experiment in kind:
Fig. 9 platform experiment schematic diagram shows water motor runnability electricity testing device, and it is primarily of water motor, water pump, flowmeter, pressure transducer, torsionmeter, flywheel, coupling, inlet and outlet pipe and the composition such as valve, cyclic water tank.
Operating mode: normal temperature, working medium: clear water, flow 1.0 × 10 -3m 3/ s, water intake hydraulic pressure 300kPa
Water flowing runs, and runs well.
Figure 10 gives the actual output of the motor obtained through platform experiment and simulation and prediction parameter comparison:
Analyze the visible output torque of its result and rotating speed is obvious linear relationship, moment of torsion becomes large along with rotating speed, and diminishes gradually; Power increases along with rotating speed, and first increases and then decreases, conforms to the theoretical characteristic curve of turbines into motion.Peak output can reach 75w, and racing speed can reach 4000r/min, and its rated speed is 1250r/min.Now output power is 60w.Pressure drop is 96kPa, water power calculation efficiency 63.7%.
Visible motors designs Rational Parameters, measured result meets expection.
It should be noted last that, above embodiment is only in order to illustrate technological scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technological scheme of the present invention or equivalent replacement, and not departing from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Reference:
One, Barry V. hydraulic turbine generator China CN1636111A2005
Two, Zhou great Qing. straighttube-type superminiature water turbine China CN2014103755412014
Three, high palace honor etc., radial piston rolling ball type end face valve low-speed high-torque hydraulic motor China CN102434382A2012.05
Four, Fu Daliang. the long lifetime is without the Novel turbine drilling tool China CN2339741Y1999 of rubber element
Five, the work such as Xu Fudong. be with synchronous reducer turbine drill work mechanics and performance simulation. publishing house of China University of Geosciences 2004.12.

Claims (9)

1. a water motor, it comprises intake end cover , stator , motor casing , main shaft , rotor , water outlet end cap , key , circlip , Sealing , bearing , bearing cap , screw one , screw two , water intake , water outlet , it is characterized in that: use clear water (comprising fresh water, seawater) as working medium, its working pressure is lower than 700kPa; Stator and rotor outside dimension all between 55mm ~ 95mm, motor casing have water intake and water outlet, intake end cover be fixedly mounted on motor casing one end; Water outlet end cap fixed installation motor casing the other end, stator is fixedly mounted on intake end cover ; Rotor be fixedly mounted on main shaft on; Main shaft pass through intake end cover , water outlet end cap the bearing of interior installation be assemblied in motor casing in, bearing is by bearing cap fixing; In intake end cover and water outlet end cap, water proof Sealing is installed , main shaft two ends all can output loading.
2. water motor according to claim 1, is characterized in that: motor casing has a water intake, two water outlets.
3. water motor according to claim 1, is characterized in that: stator, rotor blade root footpath, external diameter are equal,
Its value is:
Stator and rotor outside dimension is between 73mm ~ 83mm
Stator and rotor root footpath size is between 63mm ~ 73mm.
4. water motor according to claim 3, is characterized in that:
Stator and rotor outer blade diameter=78mm
Stator and rotor blade root footpath=68mm.
5. water motor according to claim 1, it is characterized in that, working medium pressure is lower than 300kPa.
6. water motor according to claim 1, is characterized in that:
Pressure drop is between 70kPa ~ 120kPa, and flow is 5 × 10 -4m 3/ s ~ 1.5 × 10 -3m 3between/s, when rotating speed is between 900r/min-1400r/min, water power calculation efficiency is 50-70%, and output power is 40 ~ 70w.
7. water motor according to claim 1, is characterized in that:
Turbine stator and number of rotor blades ratio are 2:1, stator vane number 12, number of rotor blades 6.
8. water motor according to claim 1, is characterized in that:
Stator vane height H=30mm, makeup of the imports angle a 2k=90 o, export structure angle a 1k=10 o
Stator leading-edge radius r 1=0.4mm, trailing edge radius r 2=0.2mm
Rotor blade heights H=20mm, makeup of the imports angle β 1k=95 o, export structure angle β 2k=5 o
Rotor leading-edge radius r 1=2mm, trailing edge radius r 2=0.45mm.
9. water motor according to claim 1, is characterized in that:
Stator chord length=52.3mm, rotor chord length=23.1mm.
CN201610087942.7A 2016-02-17 2016-02-17 Hydraulic motor Pending CN105526038A (en)

Priority Applications (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105937252A (en) * 2016-05-27 2016-09-14 长江大学 Water resource utilization system for construction object
CN114567112A (en) * 2020-01-20 2022-05-31 锐宸企业有限公司 Pressure-resistant motor

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1636111A (en) * 2001-09-17 2005-07-06 净流能量系统有限公司 Hydro turbine generator
RU2006116695A (en) * 2006-05-15 2007-11-27 Кабардино-Балкарска государственна сельскохоз йственна академи (RU) DUAL ACTION TURBINE WITH CENTRAL DEVICE
CN102434382A (en) * 2011-11-25 2012-05-02 燕山大学 Radial piston rolling ball type end face valve low-speed high-torque hydraulic motor
CN104033313A (en) * 2014-05-19 2014-09-10 王春栓 Hydraulic type Wankel engine and working method
CN104179625A (en) * 2014-07-31 2014-12-03 河海大学 Straight-pipe ultramicro water turbine
CN204921379U (en) * 2015-07-07 2015-12-30 芜湖环球汽车配件有限公司 Vertical multistage centrifugal pump

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1636111A (en) * 2001-09-17 2005-07-06 净流能量系统有限公司 Hydro turbine generator
RU2006116695A (en) * 2006-05-15 2007-11-27 Кабардино-Балкарска государственна сельскохоз йственна академи (RU) DUAL ACTION TURBINE WITH CENTRAL DEVICE
CN102434382A (en) * 2011-11-25 2012-05-02 燕山大学 Radial piston rolling ball type end face valve low-speed high-torque hydraulic motor
CN104033313A (en) * 2014-05-19 2014-09-10 王春栓 Hydraulic type Wankel engine and working method
CN104179625A (en) * 2014-07-31 2014-12-03 河海大学 Straight-pipe ultramicro water turbine
CN204921379U (en) * 2015-07-07 2015-12-30 芜湖环球汽车配件有限公司 Vertical multistage centrifugal pump

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105937252A (en) * 2016-05-27 2016-09-14 长江大学 Water resource utilization system for construction object
CN114567112A (en) * 2020-01-20 2022-05-31 锐宸企业有限公司 Pressure-resistant motor

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