CN107082465A - Machine occurs for double turbine pressure solution release ultramicro air bubbles - Google Patents
Machine occurs for double turbine pressure solution release ultramicro air bubbles Download PDFInfo
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/24—Treatment of water, waste water, or sewage by flotation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F7/00—Aeration of stretches of water
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
Machine occurs for this pair of turbine pressure solution release ultramicro air bubble, can be installed on as microbubble occurring source in water process air supporting cell system.A high pressure air dissolved pump turbine and micro hydraulic turbine release turbine have been co-axially mounted in the machine.When motor driving high pressure air dissolved pump turbine rotates at a high speed, the negative pressure auto-pumping clear water that the machine porch is produced, while air is also sucked by quantitative and is chopped into, then by quick pressure solution high pressure dissolved air water formed in clear water.Then the conversion process of energy of turbine is discharged by the hydraulic turbine again, the pressure energy moment of high pressure dissolved air water is converted into the mechanical energy of main shaft, is done work while passing to high pressure air dissolved pump turbine and participating in being pressurized dissolved air water.Due to pressure rapid drawdown within 10-20 milliseconds of time, the air that pressure solution enters in water becomes hypersaturated state and come out by abrupt release, just generates the two-phase fluid of the dense ultra-fine microbubble of superelevation.The machine is energy-efficient, do not block, can steady and continuous operation.
Description
Technical field
One, introduction
One .1, occurs machine the invention discloses a kind of pair of turbine pressure solution release ultramicro air bubble, is related to environmental protection purification of water quality field of engineering technology, more particularly, to flotation waste water treatment process equipment technical field.
One .2, the invention is suitable for various flotation tanks, enable the more energy efficient various industrial wastewaters of more efficient materializing strategy, town-sewage, various industrial park composite wastewaters, reach including turbidity removal, oil removing, decolouring and the effect for efficiently removing organic pollution materials and total phosphorus.
One .3, the invention can also be widely used in lake, reservoir, rivers eutrophication micropollutant water except in algae, turbidity removal, the water supply purification air-float technology of removal Microorganic Pollution.
Technical background
2nd, modern pressure solution release air supporting microbubble generation technique brief introduction.
The air that is dissolved in water body of general principle of two .1 modern times pressure solution release air supporting microbubble generation techniques and the pressure that is applied thereto are into approximate proportional relationship.Pressure applied is higher, is dissolved in gas therein more.Typically in 4 kilograms/cm2Pressure under, the air of every liter of 0.09 gram of water dissolvable.Typically it is being forced into 4-4.5 kilograms/cm2Under conditions of, fully aeration contact is reached close to saturation state.Then pressure moment is reduced to atmospheric pressure state, and the gas being at this moment dissolved in water body becomes hypersaturated state.So that the molten air elutriation in water body goes out, substantial amounts of fine gas bubbles are formed.Decompression moment is ofer short duration, and the microbubble formed is more tiny, and concentration is higher.The moment duration of general pressure reduction only has 300 to 500 milliseconds.At this moment the microbubble diameter formed only has 50 to 200 microns.Microbubble concentration can reach 105Individual/L.[research and application of air floating water purification technology] book (page 9 page -45) that Science and Technology of Shanghai publishing house in 1985 publishes discusses the general principle of various flotation waste water treatment technologies；(page 46 page -185) carefully discuss pressure solution release air flotation technology general principle and rule detailed rules and regulations comprehensively.Wherein pressure air-dissolving rule is discussed in (page 46 page -94) special project；In (page 95 page -155) the special release rules for discussing pressure air-dissolving water.
It is usually to use 4.0-5.5Kg/cm that above-mentioned technological principle is realized in two .2, engineering2Clear water and air is injected in the pressure air-dissolving tank with water level automatic control function, stopped in dissolving about 7.5-10 minutes by the centrifugal water pump of pressure and the air compressor machine of relevant pressure respectively, is reached using the very big gas liquid interfacial area of packing layer expansion in dissolving and is dissolved to saturation state and as pressure air-dissolving water.Then this pressure air-dissolving water is input in flotation tank by pipeline again, the process of instant decompression is completed by the dissolved air release installed in pressure air-dissolving water conveyance conduit end.Outgassing water containing a large amount of microbubbles advances to flutterring in flotation tank and catches region.In the region, the flocculant that is added in raw water is reacted to have born the tiny alumen ustum that a large amount of diameters are about 3-5mm.Substantial amounts of polluter has been condensed in the alumen ustum.Microbubble and this alumen ustum in outgassing water less than 5%, which are mutually flutterred, catches mutually bonding formation extension bubble wadding flower.Observe under the microscope, the surface of 90% each this wadding flower has several a diameter of 50-200 microns pearlescent transparent bright spots, here it is a diameter of 50 microns to 200 microns of microbubble has hung over the surface of alumen ustum.This proportion for hanging bubble wadding flower is less than 1, and slowly emerge the purpose for reaching that separation of solid and liquid purifies water under buoyancy.All extension bubble wadding spends the time that the process emerged about need be 30 minutes.During this air supporting, more than 95% microbubble has only served concentration thrust diffusion, is spent with promoting the microbubble less than 5% and alumen ustum to be combined into extension bubble wadding.During this air supporting, this more than 95% microbubble is finally spilled off the water surface, flies away in the air.Visually see, when the temperature of water is also lower than the temperature of air, can also see fog on the water surface of common pressure solution release flotation tank steaming.This phenomenon also show substantial amounts of microbubble and not combined with alumen ustum.By calculating, the alumen ustum in emersion water need only want 3% or so of molten tolerance to be combined with alumen ustum.The alumen ustum for also having 7-10% in addition does not hang up microbubble.So the general turbidity removal rate of flotation tank only has 90-93%.In Water purification engineering, when common pressure solution discharges flotation tank PROCESS FOR TREATMENT lake eutrophication raw water containing algae, the general 75-100mg/L of raw water turbidity, flotation tank delivery turbidity about 5-10mg/L；The general about 50-150mg/L of raw water algae content, the general about 5-15mg/L of water outlet algae content.Although clearance is not especially high, essential condition is created for follow-up filtration, purification processing, otherwise subsequent purification technique can not be carried out.So air-float technology has been widely used in various engineering of water treatment now.General common pressure solution release air-float technology processing feedwater, manufacture dissolved air water need reflux ratio reach 7.5-10%；Handle sewage, manufacture dissolved air water need reflux ratio reach 30-40%.
Two .3, the modern following problem of air supporting long-term existence：
A, at the seventies in last century and the beginning of the eighties, above-mentioned dissolved air release is particularly easy to block, and service life is especially short, and only 6 months just as cavitation erosion and failure of starting working.So that pressure solution air supporting fluctuation of service.After 1985, occur in that the serial anti-clogging of TJ and be capable of the release of automatic backwash so that easily block this problem and be eased indirectly.Present this release has been commonly used.But blockage problem can not be thoroughly solved, the frequency of blocking is simply reduced, cleaning is eliminated and blocks the artificial of consumption and alleviate the adverse effect run to water process.And release service life it is very short the problem of be not solved always, must change once every year, be very much trouble.
B, pressure solution release systematic comparison is complicated so that cost is expensive, complex operation.Floor space is larger.
In order to solve these problems, it is 01238487.9 to have number of patent application, and utility model is entitled：The technology of [pressure pot-peripheral pump airfloat machine], using 5-7Kg/cm2The Vortex pump of pressure is in the air self-suction simultaneously that draws water.After air is inhaled into, mixing is first completed on suction piping, the two-phase flow body containing a large amount of minute bubbles is formd.In the two-phase flow body, water is continuous phase, and air is discrete phase.The fluid-mixing enters back into peripheral pump and bubble is cut into the bubble population that diameter is about 500 microns by many mutliblade shear actions on whirlpool impeller of pump.It is then input in small pressure dissolving, only 0.5 minute residence time just completed dissolving in dissolving, so as to obtain 4.0-4.5Kg/cm2Pressure air-dissolving water.The technology uses cooperatively common release so that [pressure pot-peripheral pump airfloat machine] can also obtain the technological effect as discharging air supporting with common pressure solution.The advantage of the technology is that large complicated dissolving is reduced and simplified, and air compressor machine is saved, and is operated also simple.The also cheap many of cost.Which solve the problem of the system complex of above-mentioned existing air-float technology.But energy consumption is especially high, because the efficiency that peripheral pump is pressurized to water only has less than 0.35, there was only less than 0.25 to liquid gas two-phase flow charging efficiency.And the efficiency that common centrifugal water pump is pressurized to water has 0.75-0.87.Therefore, in the recent decade, the technology is applied only in small-sized air-flotation system device.
C, high energy consumption：On the one hand, the pressure energy of pressure air-dissolving water all among the local resistance loss of dissolved air release, without feasible method reclaim by consumption.The utilization ratio of another aspect microbubble is low, only less than 5%.
To solve the problems, such as high energy consumption, it is 88109117.0 to have number of patent application, and denomination of invention is entitled：The technology of [centrifugal water-wheel machine for releasing dissolved gas], it is supporting with micro generation unit using the Minitype centrifugal hydraulic turbine.Its operation principle be the pressure energy using pressure air-dissolving water in the presence of axle conductance wheel, be converted into the moment of momentum, the moment of momentum promotes centrifugal water engine blade wheel to rotate at a high speed, then drive generating set to generate electricity to have reached the purpose recovered energy by main shaft.Because runner is wide, the machine also completely solves the problem of common release is easily blocked simultaneously.On the other hand, because the time that [centrifugal water-wheel machine for releasing dissolved gas] releases energy only has 100-150 milliseconds, about the 30% of only common release release time, produced microbubble diameter is more tiny, about 10 to 50 microns, microbubble concentration is denseer, about reaches 106Individual/L.Flutterring for flotation tank is dispersed in as the microbubble cloud and mist of this high concentration and catches region, and alumen ustum forms gas enclosure bubble and hangs bubble wadding flower.Observe under the microscope, there are more wadding flower surfaces to have tens a diameter of 10-50 microns pearlescent transparent bright spots, bright spot is also seen in the inside of alumen ustum.Here it is a diameter of 10 microns to 50 microns of microbubble has hung over the surface of alumen ustum and has been clipped in the inside of alumen ustum.The proportion of this wadding flower is smaller, and the time emerged is shorter.This to reduce 30% using the flotation tank residence time of the technology, purifies removal efficiency and brought up to 95-97% by common 90-93%.
Although the machine obtains thinner microbubble denseer than release, and does not produce blocking again, it can recover energy again；But the machine but causes system more complicated, backflow high-pressure hydraulic pump, air compressor machine, dissolving are not saved.Particularly electrical energy recovery device not manageability, and system cost is more expensive.More than 20 years in the past, and only the sewage treatment project of a few factory applies this technology, achieves preferable water treatment efficiency.But because cost is high, the energy of recovery is difficult to be used effectively and (be typically only used for illumination) etc., and reason is not received and promoted by engineers.
Three, the purpose of the present invention：
Three .1, A release pressure air-dissolving water are not blocked completely, the cycle of operation is long, and service life is long, and system operation is more stable.
Three .2, B system is simple, save the air compressor machine and complicated bulky pressure volume pot that must often repair, and high pressure reflow pump also saves.Make cost saving, take up an area and reduce, operate easier.
Three .3, C simultaneity factor are saved, and can recycle the energy of release.
Three .4, D shorten the time of conversion of releasing energy, and make that the microbubble of generation is more tiny, and concentration is higher.This aspect can cause the reflux ratio of dissolved air water to be greatly reduced, and on the other hand be greatly shortened the dissolved air flotation time, and air supporting pool volume is significantly reduced weight.This causes air-float technology to be not only that pressure solution release system saves energy consumption, reduction investment, and whole flotation tank process system, including air supporting pond body can be caused all to reduce investment, and reduces the dose of dosing coagulant.
Four, realize technical scheme：
Four .1, the present invention is that machine occurs for a kind of pair of turbine pressure solution release ultramicro air bubble, and it will take out clear water, air-breathing, mixing, supercharging, fining air bubbles, high pressure solution gas, energy conversion and the functions such as the dense ultra-fine microbubble of high pressure dissolved air water release generation superelevation, energy regenerating are integrated in one.The present invention be by it is a kind of can gas-liquid delivery and can efficient stable produce the extraordinary peripheral pump of high pressure and moment completes the miniature Francis turbine of energy conversion and coaxially constitutes a kind of new machine --- machines occur for double turbine pressure solutions release ultramicro air bubbles.The impeller of above-mentioned extraordinary peripheral pump is mutually conducted using a part for the two sides blade of semi-open type whirlpool impeller, the i.e. impeller disk, to balance pressure；The runner of above-mentioned extraordinary peripheral pump uses half-closed runner (entrance enclosed, export open type), i.e. the runner initial enters the root (i.e. negative pressuren zone) that head piece correspond to semi-open type whirlpool impeller blade, and the runner terminates the end (i.e. higher-pressure region) that outflow port correspond to semi-open type whirlpool impeller blade.
Four .2, Fig. 1 are operation principle schematic overview of the invention.A high pressure air dissolved pump turbine (8) and hydraulic turbine release turbine (19) are mounted with the main shaft (13) of the machine simultaneously.When motor (1) driving high pressure air dissolved pump turbine (8) rotates at a high speed, the negative pressure that water supply connector (9) place on the machine high pressure air dissolved pump body (7) is produced is by ejector (10) auto-pumping clear water, while air also forms numerous tiny bubbles by quantitative suction；Gas-liquid mixed stream enters after high pressure air dissolved pump impeller (8), and small air bubble continues to be chopped into and is input to by Quick-pressurizing in high pressure double plate Gas dissolving pipe (12), and air is completely dissolved in formation high pressure dissolved air water in clear water.Then high pressure dissolved air water discharges the conversion process of energy of the release turbo blade (20) on turbine (19) by the hydraulic turbine again, is converted into the mechanical energy of main shaft (13) by the pressure energy moment of high pressure dissolved air water and assists the high pressure air dissolved pump turbine (8) on main shaft (13) to be pressurized dissolved air water to do work.Due to about 70% rapid drawdown within 5-20 milliseconds of time of pressure energy, the air dissolved in close to saturation pressure in water becomes hypersaturated state and come out by abrupt release, just generating the dense ultra-fine microbubble of superelevation, (about 0.5-5 microns of the diameter of microbubble, concentration is about 108-9/L).The machine is energy-efficient, do not block, can steady and continuous operation.
Five, technical characteristic of the invention is as follows：
Five .1, technical characteristic is 1., the machine is by motor (1), motor cabinet (2), shaft coupling (3), bearing lid (4), bearing (5), two-sided mechanical seal (6), high pressure air dissolved pump body (7), high pressure air dissolved pump turbine (8), water supply connector (9), ejector (10), one side mechanical seal (11), high pressure double plate Gas dissolving pipe (12), main shaft (13), miniature water wheels machine for releasing shell (14), water lubricating pilot bearings (15), positioning screw (16), guide wheel hub (17), guide vane (18), hydraulic turbine release turbine (19), discharge turbo blade (20), fixing nut (21), turbine bottom (22), bottom bolt (23), stay bolt (24) is installed, lag bolt (25) is installed, key (26) etc. is constituted.
Five .2, technical characteristic is 2.：Motor cabinet (2) is arranged on high pressure air dissolved pump body (7), motor (1) is arranged on motor cabinet (2)；High pressure double plate Gas dissolving pipe (12) is arranged under high pressure air dissolved pump body (7), and miniature water wheels machine for releasing shell (14) is arranged under high pressure double plate Gas dissolving pipe (12).
Five .3, technical characteristic is 3.：Bearing (5) is arranged in the bearing box in motor cabinet (2) lower end then, by bearing lid (4) axial restraint；Two-sided mechanical seal (6) is installed in the cavity (K) formed between motor cabinet (2) lower end Wai Ze faces and high pressure air dissolved pump body (7)；The lower end Wai Zemian middle positions of high pressure air dissolved pump body (7) are provided with one side mechanical seal (11)；A flow-out hole (E) is provided with the lower surface of high pressure air dissolved pump body (7).
Five .4, technical characteristic is 4.：One water supply connector (9) is installed, ejector (10) is connected with water supply connector (9) on high pressure air dissolved pump body (7).
Five .5, technical characteristic is 5.：Guide wheel hub (17) is fixedly mounted in miniature water wheels machine for releasing shell (14) by positioning screw (16), and water lubricating pilot bearings (15) are positioned screw (16) and are fixedly mounted in guide wheel hub (17)；Turbine bottom (22) is fixedly mounted on the lower end of miniature water wheels machine for releasing shell (14) by bottom bolt (23).
Five .6, technical characteristic is 6.：Main shaft (13) is connected by shaft coupling (3) with the output shaft of motor (1), and be positioned in by bearing (5) and water lubricating pilot bearings (15) on motor cabinet (2) and miniature water wheels machine for releasing shell (14), and accordingly pass through two-sided mechanical seal (6), one side mechanical seal (11), high pressure double plate Gas dissolving pipe (12), water lubricating pilot bearings (15), guide wheel hub (17)；In main shaft (13) through the position of the inner chamber (D) of high pressure air dissolved pump body (7), high pressure air dissolved pump turbine (8) is installed；Hydraulic turbine release turbine (19) is installed through guide wheel hub (17) lower surface position in main shaft (13) end；There is release turbo blade (20) on hydraulic turbine release turbine (19)；Fixing nut (21) is arranged on below the least significant end of main shaft (13), i.e. hydraulic turbine release turbine (19), to fix hydraulic turbine release turbine (19).
Six, operation operation principle process of the invention is as follows：
Six .1, the machine is installed in water process flotation tank, and its turbine part is installed and is placed under water, and motor (1) is placed on the water surface.Machine ejector (10) water inlet (A) is connected with the return duct attracted from flotation tank clear water zone, and machine ejector (10) suction hole (B) is communicated with air.Motor (1) drives high pressure dissolved air water pump turbine (8) to rotate at a high speed by shaft coupling (3), main shaft (13) during operation；So as to produce negative pressure at water supply connector (9) place of high pressure air dissolved pump body (7), backflow clear water is inhaled into ejector (10) by return duct and produces jet effect；Air is quantitatively sucked, and quick mixing is completed in the trunnion runner (C) of ejector (10), the elastic two-phase fluid containing a large amount of tiny bubbles is formed.Clear water is continuous phase, and air is a large amount of a diameter of 1.5-3mm of discrete phase, and concentration is 103Individual/L minute bubbles are dispersed in the two-phase fluid.
Six .2, the two-phase fluid enters in the work chamber (D) of high pressure air dissolved pump body (7), obtains energy under the blade effect of high pressure air dissolved pump turbine (8), flow velocity is accelerated, its lift is improved rapidly, and gross energy about reaches 45-60 meters of heads；Wherein kinetic energy accounts for major part.At this moment the minute bubbles in the high energy two-phase fluid are acted on through many mutliblade mechanical shearings and along journey hydraulic shear and Hydrodynamic compression, have mostly become the more tiny bubble population that diameter only has 500-1000 microns, its concentration is also in the increase of geometry multiple.
Six .3, the high energy two-phase fluid flows out high pressure air dissolved pump body (7) by flow-out hole (E) and entered after high pressure double plate Gas dissolving pipe (12), and flow velocity declines, and kinetic energy is largely converted into pressure energy.Pressure is further improved, and reaches 0.45-0.6MPa.Water body stops the time of about 30-60 seconds in high pressure double plate Gas dissolving pipe (12), due to the hydraulic shear effect and high pressure effect of wherein higher swirl velocity, discrete gas is with infinitely great contact area, utilize great liquid film renewal rate, overcome liquid-film resistance rapidly, it is fully dissolved in water under high pressure, makes the high pressure dissolved air water close to saturation.At this moment it has been stiff one phase flow body.
Six .4, after high pressure dissolved air water outflow high pressure double plate Gas dissolving pipe (12), in into miniature water wheels machine for releasing shell (14), wink is acted on by guide wheel hub (17) upper block blade (18), its most energy is changed into rapidly the moment of momentum, pressure is reduced rapidly；The direction of rotation of the moment of momentum is consistent with the direction of rotation of main shaft (13).The moment of momentum is acted on by discharging turbo blade (20), promote hydraulic turbine release turbine (19) rotation acting, by in the energy transfer of recovery to main shaft (13), this causes main shaft (13) about to reduce 25 --- 35% power consumption, reach high pressure dissolved air water energy simple purpose for reclaiming and utilizing in the machine.The conversion overall process of this energy is no more than 10-30 milliseconds, and the air that original is dissolved in close to saturation pressure in high-pressure water body becomes hypersaturated state, and moment is released, and it is 10 that concentration is formd in water8-109Individual/L, the dense ultra-fine microbubble of a diameter of 0.5-5 microns superelevation.Numerous flow-out holes (H) that the current of gas are eventually passed on miniature water wheels machine for releasing shell (14) are released imperturbably to flow into flotation tank, form the dense superfine bubble cloud of the equally milky superelevation of similar milk, the superfine bubble cloud is observed in the slowly ascension under water of 1 meter of depth and also loses complete dissipation in 20-30 minutes.But after this superelevation dense ultra-fine microbubble and alumen ustum are combined, less than 5 minutes, 99.5% alumen ustum all emersions water surface.The machine is applied to allow the reflux ratio of dissolved air water to decline 30-50% in air supporting engineering, makes air supporting cell system more energy efficient.
Seven, basic technology performance of the invention：
Seven .1, the above-mentioned operation principle and the course of work of the present invention shows that the step of machine one completion is drawn water, air-breathing, the molten gas of supercharging and energy change recycling and the release of molten gas, the molten gas release system of air-float technology is set to eliminate the dissolving that structure is more complicated, build is huge, also the air compressor that need often repair is eliminated, also reflux pump is eliminated, the purpose of simplified system has thus been reached, pressure solution release system cost about more than 30% is reduced.This also make it that operation is simpler, runs also more stable.Because Energy Efficient is recycled, while also having reached reduction operating cost about 30-50% the above object.
Seven .2, because the machine is in addition to motor cabinet (2) is with steel making, remaining parts can select high-quality stainless steel, and the conversion that releases energy of pressure air-dissolving water is not local head loss using current hard hit, but change to realize by the smoother moment of momentum flowed in release turbo blade (20).Therefore the problem of machine avoids release process cavitation erosion.So each excessively stream part life of the machine is more than 20 years；The machine water lubricating pilot bearings use polytetrafluoroethylene (PTFE) self-lubricating material, and have inner passage to provide the dissolved air water cleaned as cooling-lubricant for it, so the machine sliding bearing part service life is more than 50,000 working hours；The machine rolls self-aligning bearing and uses high speed long-life bearing, provides lubrication by lithium saponify, its life-span is also more than 50,000 working hours.The machine is typically using quadrupole or to pole motor, and rotating speed is about 1450 turns/min or 2960 turns/min of highest.This is the rotating speed that current plant equipment is generally used, and modern mechanical working ability can ensure not shake and noise during its operation.So the machine of the invention is stable, usage cycles are more than 10 times of common release.Service life is more than 20 times of common release.
Seven .3, runner of the present invention is wide, is not easily blocked.
Seven .4, because the microbubble diameter that the present invention is produced is more tiny, concentration is higher, and this will to build more efficient air supporting cell system.Especially since the machine small volume, multiple functional of the present invention, can longtime running it is stable, it is possible to using submersible electric motor (1), by whole machine installation under water, only air intake duct is extended to more than the water surface in flotation tank.So that the pipeline of air-flotation system is more succinct.If using submersible electric motor (1), the present invention also has a potential application field --- vessel by microbubbles drag-reduction energy-saving.
When using submersible electric motor (1), machine occurs for the double turbine pressure solution release ultramicro air bubbles of the present invention, it is possible to be installed on stem under water, only air intake duct is extended to more than the water surface.The dense ultra-fine microbubble of superelevation will intersperse among whole hull bottom then surface under water, extend stern from stem always, and the molten tolerance power of suitable control is allowed to be unlikely to enter propeller to avoid cavitation.This can simply obtain the effect of ship drag reduction saving energy 10% or so, and can run steadily in the long term.
Eight, the present invention and traditional pressure solution release air-float technology technology and other improvement pressure solutions discharge the essential distinction of air flotation technology：
Eight .1, of the invention compared with traditional pressure solution release system, its essential distinction 1 is：Flow back water pump, air compressor machine, pressure air-dissolving tank, release this four big function of the molten gas that traditional pressure solution discharges system is integrated in one by the machine；And add the function that energy regenerating is utilized.
Eight .3, the present invention is entitled with utility model：The technology of [pressure pot-peripheral pump airfloat machine] is compared, and its difference is：It is one that the function of molten gas reflux pump in traditional pressure solution release system, air compressor machine, pressure air-dissolving tank is simply closed three by [pressure pot-peripheral pump airfloat machine], reduces system cost；Operation is easier, but still must use release to complete energy expenditure conversion, and pressure energy rapid drawdown forms the outgassing water containing highly concentrated microbubble, so the machine can not only recover energy, and because using inefficient peripheral pump energy consumption must be caused higher.This results in the technology and cannot be used for high-power unit, and a unit can only achieve the Water purification air supporting engineering of about 300-500 tons of sewage treatment air flotation engineering daily and daily about 2500 tons of lakes containing algae.This is also the reason for technology can not be widely popularized.And although the present invention is also to employ inefficient peripheral pump to complete gas-liquid delivery and high pressure solution gas process, be due to two aspect the reason for so that overall efficiency is greatly improved：On the one hand using semi-open type whirlpool impeller of pump and the extraordinary peripheral pump of half-closed runner, to ensure gas-liquid delivery stable operation, it is allowed to reduce 10%-15% energy loss in biphase gas and liquid flow is produced high-pressure process；On the other hand coaxial hydraulic turbine release turbine (19) has reclaimed energy.This enables to be used for large-scale air supporting engineering, and a unit just can apply to the Water purification air supporting engineering of about 10000 tons of sewage treatment air flotation engineering daily and daily about 50,000 tons of lakes containing algae.The invention is with [pressure pot-peripheral pump airfloat machine] technology another difference is that [pressure pot-peripheral pump airfloat machine] technology will also configure common release, and unavoidable to produce blocking, usage cycles are short, also often must repair and change.Turbine pressure solutions release ultramicro air bubbles of the invention double occur machines and pressure solution release system are simplified into simplest degree --- need only an equipment, release need not be reconfigured in addition.
Eight .4, the double turbine pressure solution release ultramicro air bubbles of the present invention occur machine and utility model is entitled：The technology of [centrifugal water-wheel machine for releasing dissolved gas] is compared, and its difference is：[centrifugal water-wheel machine for releasing dissolved gas] be the release solved in traditional pressure solution release air-flotation system easily block, usage cycles and life-span it is very short, and the problem of waste energy.But it does not simplify system and device not only, cause that system is more complicated on the contrary, cost is higher, the energy of recovery is not easy to utilize.Although the present invention completes to realize pressure air-dissolving water energy conversion build-up of pressure rapid drawdown produces highly concentrated microbubble as [centrifugal water-wheel machine for releasing dissolved gas] technology using hydraulic turbine technology；Also due to hydraulic turbine working-blade runner is wider, the susceptible to plugging problem of release is also fully and completely solved.But [centrifugal water-wheel machine for releasing dissolved gas] the mechanical energy reconvert of recovery can just need be used into electric energy.And the energy that the present invention is reclaimed is not necessary to reconvert into electric energy, but directly same main shaft (13) is reclaimed and has passed to high pressure air dissolved pump turbine (8), then is pressurized acting to dissolved air water by the blade on high pressure air dissolved pump turbine (8).And high pressure air dissolved pump turbine (8) is fitted without on the main shaft of [centrifugal water-wheel machine for releasing dissolved gas], naturally with regard to the function without automatic pumping air-breathing and pressure air-dissolving.
Eight .5, the double turbine pressure solution release ultramicro air bubbles of the present invention occur machine and utility model is entitled：The technology of [centrifugal water-wheel machine for releasing dissolved gas] is compared, another difference is that：[centrifugal water-wheel machine for releasing dissolved gas] is that conversion energy decompression release is carried out to the 0.35-0.45MPa pressure air-dissolvings water produced in dissolving, and the present invention is that conversion energy decompression release is carried out to the 0.35-0.6MPa high pressures dissolved air water itself produced, and again because the release turbo blade (20) of the present invention is centripetal mixed flow shape, runner is shorter, so that the time of energy conversion is shorter, only 5-20 milliseconds, the only 5%-15% of [centrifugal water-wheel machine for releasing dissolved gas] release time.Thus obtain more highly concentrated more fine gas bubbles.This provides necessary condition to build more efficient air supporting cell system.
Eight .6, in summary, the double turbine pressure solution releases of the present invention have obvious essential distinction compared with traditional pressure solution discharges air flotation technology and other feasible improving technologies, while presenting novelty, practicality and the creativeness of the present invention.
Nine, it is as follows that model machine of the present invention implements design row：
Pressure in nine .1, high pressure air dissolved pump body (7) is set as 4.5Kg/cm2(0.45MPa), dissolved air water flow is 2.5m3/ h, per hour molten tolerance be：
C=H (the saturated dissolved gas amount under an atmospheric pressure) * P (pressure Kg/cm2) * Q (flow L/h)
C=18mL gas/L water * 4.5Kg/cm2* 2500L/h=202L/h.
H=18mL gas/L water in above formula, by above-mentioned [research and application of air floating water purification technology] book (page 48) acquisition of tabling look-up.
Nine .2, above-mentioned operating mode per hour pressure air-dissolving water obtain energy be about：
W=gQH/3600=9.81*45M (lift) * 2.5 tons/h (flow)/3600=0.306 kilowatt-hours；
Release turbo blade (20) recoverable energy 0.306*0.85 (miniature water wheels machine for releasing efficiency)=0.26 kilowatt per hour；
The efficiency of ejector (10) is about that the 0.75, efficiency of high pressure air dissolved pump body (7) is about that the 0.70, efficiency of high pressure air dissolved pump turbine (8) is about that the 0.65, efficiency of high pressure double plate Gas dissolving pipe (12) is about 0.95；
Then total molten gas efficiency is about 0.75*0.70*0.65*0.95=0.324.
Main shaft (13) drives high pressure air dissolved pump turbine (8) to run institute's palpus initial power：Kilowatt 0.306/0.324=0.944；
Deduct 0.26 kilowatt recyclable of power, about 0.68 kilowatt of the actual acting of motor.
It is 1.1 kilowatts (enough and to spare amount is 0.42 kilowatt, enough and to spare rate 38%), 2960 turns/min of rotating speed with motor power (output).
Nine .3, the outer blade diameter D1=105mm of high pressure air dissolved pump turbine (8), the blade interior diameter D2=77mm of high pressure air dissolved pump turbine (8), the wide b1=10mm of blade of high pressure air dissolved pump turbine (8), the high b2=6mm of boss of high pressure air dissolved pump turbine (8).
Guide wheel hub (17) high h1=72mm；Guide vane (18) high h2=36mm；Water lubricating pilot bearings (15) high h3=45mm；Guide wheel hub (17) and the total high h4=86mm of water lubricating pilot bearings (15) assembling combination；The runner outer radius r1=40mm of guide vane (18), the runner inside radius r2=32.5mm of guide vane (18)；
Discharge the inlet radius of turbo blade (20)：R1 (entering)=40mm；Discharge the outlet inside radius of turbo blade (20)：
R2 (going out)=20mm；Discharge the outlet outer radius of turbo blade (20)：R3 (going out)=30mm；
Discharge turbo blade (20) tunnel inlets wide：B1 (entering)=7mm；Discharge turbo blade (20) runner total height B2=24mm.
Discharge turbo blade (20) and be provided with 13, the excessively stream volume in release turbo blade (20) region is actual to be measured as：0.00000928m3(9.28 milliliters).Pressure air-dissolving water release turbo blade (20) region residence time (i.e. release time) be：
T releases=volume/flow=0.00000928m3/2.5(m3/ 3600 seconds)=0.0134 second (13.4 milliseconds)；
That is the energy conversion release time of the machine is 13.4 milliseconds.
Other numerous parameters are determined by each Specialty Design specification by calculating.
Nine .4, design example can be used in 360-500 tons/d of the Industrial Wastewater Treatment engineering flotation tanks such as processing printing and dyeing, papermaking, petrochemical industry, can be used for lake, reservoir water except in 2000-2500 tons/d of algae turbidity removal Water purification engineering flotation tank.
Ten, explanation
Ten .1, Fig. 1 are the present invention [machine occurs for double turbine pressure solution release ultramicro air bubbles] operation principle schematic overview.
Ten .2, Fig. 2 are high pressure air dissolved pump impeller (8) principle schematic.
Ten .3 Fig. 3 are water lubricating pilot bearings (15), the assembling schematic diagram of guide wheel hub (17).
Ten .4, Fig. 4 are the principle schematic that the hydraulic turbine discharges turbine (19).
Claims (6)
1. occur machine the invention discloses a kind of pair of turbine pressure solution release ultramicro air bubble, it is characterized in that：The machine by motor (1),
Motor cabinet (2), shaft coupling (3), bearing lid (4), bearing (5), two-sided mechanical seal (6), high pressure air dissolved pump body (7),
High pressure air dissolved pump turbine (8), water supply connector (9), ejector (10), one side mechanical seal (11), high pressure double plate Gas dissolving pipe
(12), main shaft (13), miniature water wheels machine for releasing shell (14), water lubricating pilot bearings (15), positioning screw (16), guide wheel hub
(17), guide vane (18), hydraulic turbine release turbine (19), release turbo blade (20), fixing nut (21), turbine
Bottom (22), bottom bolt (23), installs stay bolt (24), installs lag bolt (25), key (26) etc. and constituted.
2. machine occurs for according to claim 1 pair of turbine pressure solution release ultramicro air bubble, it is characterized in that：Motor cabinet (2) is pacified
On high pressure air dissolved pump body (7), motor (1) be arranged on motor cabinet (2) on；High pressure double plate Gas dissolving pipe (12) is installed
Under high pressure air dissolved pump body (7), miniature water wheels machine for releasing shell (14) is arranged under high pressure double plate Gas dissolving pipe (12).
3. machine occurs for according to claim 1 pair of turbine pressure solution release ultramicro air bubble, it is characterized in that：Bearing (5) is installed
In bearing box in motor cabinet (2) lower end then, by bearing lid (4) axial restraint；Motor cabinet (2) lower end Wai Ze faces and
Two-sided mechanical seal (6) is installed in the cavity (K) formed between high pressure air dissolved pump body (7)；High pressure air dissolved pump body (7)
Lower end Wai Zemian middle positions one side mechanical seal (11) is installed；One is provided with the lower surface of high pressure air dissolved pump body (7)
Flow-out hole (E).
4. machine occurs for according to claim 1 pair of turbine pressure solution release ultramicro air bubble, it is characterized in that：High pressure air dissolved pump body (7)
On a water supply connector (9) is installed, ejector (10) is connected with water supply connector (9).
5. machine occurs for according to claim 1 pair of turbine pressure solution release ultramicro air bubble, it is characterized in that：Guide wheel hub (17) by
Positioning screw (16) is fixedly mounted in miniature water wheels machine for releasing shell (14), and water lubricating pilot bearings (15) are positioned screw (16)
It is fixedly mounted in guide wheel hub (17)；Turbine bottom (22) is fixedly mounted on miniature water wheels machine for releasing by bottom bolt (23)
The lower end of shell (14).
6. machine occurs for according to claim 1 pair of turbine pressure solution release ultramicro air bubble, it is characterized in that：Main shaft (13) passes through
Shaft coupling (3) is connected with the output shaft of motor (1), and is positioned by bearing (5) and water lubricating pilot bearings (15)
On motor cabinet (2) and miniature water wheels machine for releasing shell (14), and accordingly pass through two-sided mechanical seal (6), one side mechanical seal
(11), high pressure double plate Gas dissolving pipe (12), water lubricating pilot bearings (15), guide wheel hub (17)；High pressure is passed through in main shaft (13)
The position of the inner chamber (D) of air dissolved pump body (7), is provided with high pressure air dissolved pump turbine (8)；Pass through and lead in main shaft (13) end
Wheel hub (17) lower surface position is provided with hydraulic turbine release turbine (19)；There is release turbine leaf on hydraulic turbine release turbine (19)
Piece (20)；Fixing nut (21) is arranged on below the least significant end of main shaft (13), i.e. hydraulic turbine release turbine (19), with
Fixed hydraulic turbine release turbine (19).
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| CN201610087505.5A CN107082465A (en) | 2016-02-16 | 2016-02-16 | Machine occurs for double turbine pressure solution release ultramicro air bubbles |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112535988A (en) * | 2020-11-18 | 2021-03-23 | 中广核环保产业有限公司 | Micro-nano bubble preparation device and preparation method thereof |
| CN113998755A (en) * | 2021-12-31 | 2022-02-01 | 山东和正环保工程有限公司 | Super-atomization dissolved air flotation device |
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| JP2003190753A (en) * | 2001-12-27 | 2003-07-08 | Tekku Kogyo Kk | Fine air bubble feeder |
| CN1456385A (en) * | 2003-03-21 | 2003-11-19 | 贡有成 | Fluid mixing method and device thereof |
| CN2780752Y (en) * | 2005-04-05 | 2006-05-17 | 山东嘉豪集团有限公司 | Orygen enriched aeration device |
| US20130140246A1 (en) * | 2011-12-01 | 2013-06-06 | Malcolm Fabiyi | Method and system for enhancing mass transfer in aeration/oxygenation systems |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003190753A (en) * | 2001-12-27 | 2003-07-08 | Tekku Kogyo Kk | Fine air bubble feeder |
| CN1456385A (en) * | 2003-03-21 | 2003-11-19 | 贡有成 | Fluid mixing method and device thereof |
| CN2780752Y (en) * | 2005-04-05 | 2006-05-17 | 山东嘉豪集团有限公司 | Orygen enriched aeration device |
| US20130140246A1 (en) * | 2011-12-01 | 2013-06-06 | Malcolm Fabiyi | Method and system for enhancing mass transfer in aeration/oxygenation systems |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112535988A (en) * | 2020-11-18 | 2021-03-23 | 中广核环保产业有限公司 | Micro-nano bubble preparation device and preparation method thereof |
| CN113998755A (en) * | 2021-12-31 | 2022-02-01 | 山东和正环保工程有限公司 | Super-atomization dissolved air flotation device |
| CN113998755B (en) * | 2021-12-31 | 2022-04-12 | 山东和正环保工程有限公司 | Super-atomization dissolved air flotation device |
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Application publication date: 20170822 |