CN203269664U

CN203269664U - Water aeration oxygenation device with low power consumption and high efficiency

Info

Publication number: CN203269664U
Application number: CN2013202027993U
Authority: CN
Inventors: 郏松筠
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-04-19
Filing date: 2013-04-19
Publication date: 2013-11-06
Anticipated expiration: 2023-04-19

Abstract

The utility model relates to a water aeration oxygenation device with low power consumption and high efficiency. The water aeration oxygenation device comprises aerators, a gas conveying tube, a fixing apparatus and a floating part. The water aeration oxygenation device is characterized in that the one or more aerators are arranged in a barrel body which is fixed in water by the fixing apparatus and the floating part; the barrel body is integrally provided with water flow channels from a water inlet to a water outlet; the water inlet and the water outlet are respectively communicated with an external water body; the aerators and the inner wall of the barrel body form a water flow channel with the cross section area of PA; the inner wall without the aerators of the barrel body defines a water flow channel with the average cross section area of PB, wherein the ratio of PB to PA is more than 3; the aeration surfaces of the aerators are parallel to the main flow direction of the water body; devices or facilities including an air-blowing aeration device, a propeller, a coffer capable of causing water level difference and the like can be used for driving water to flow in the water flow channels; the aeration surfaces are in the parts with the cross section area of PA, high water flow velocity, large water-flow kinetic energy and low water pressure, of the water flow channels. Therefore, the aeration pressure and aeration power consumption are remarkably lowered, and the oxygenation amount and the oxygen power coefficient increase in multiple.

Description

A kind of water body aeration oxygen replenishing device of low power consumption high efficiency

Technical field

The utility model relates to a kind of water body aeration oxygen replenishing device, especially a kind of efficient water body aeration oxygen replenishing device.Main range of application is: the water oxygenation in various sewage and waste water treating processess; The water oxygenation of the aquaculture of fresh water, seawater; The oxygenation reoxygenation of river course, pond, water body in lake; Oxygenation in the water treatment process; Water body deironing, demanganization aeration oxygen replenishing; The oxygenation of fish jar, aquarium, water tank.

Background technology

In the various sewage and waste water treating processess of sewage work, water oxygenation is all essential link, and the required energy consumption of oxygenation accounts for more than 60% of total energy consumption, accounts for total operating cost approximately 40%.By 2015, the whole of China's sewage load every day will reach approximately 200,000,000 tons, and the oxygenation power consumption of every day reaches 5,000 ten thousand-100,000,000 kilowatt-hours (degree), and therefore efficient aeration oxygen replenishing technology, equipment have its great economic worth and social benefit.

China is maximum in the world aquaculture country, aquaculture output accounts for global 70%, approximately 100,000,000 mu of brackish water aquaculture areas, oxygenating machine is the most important necessary equipment of various aquacultures: it can make airborne oxygen dissolve in water body, increase the dissolved oxygen amount in water body, improve aquaculture density, avoid because of water hypoxia cause the fishery products of cultivation sick, dead, reduce water pollution.Higher rational water body dissolved oxygen amount can be accelerated the speed of growth of fishery products, shortens the production cycle, reduces the consumption of bait and medicine, reduces the discharging of breeding wastewater, improves output, the quality of fishery products, comprehensively improves from many aspects the aquaculture benefit.

There is pollution in various degree in domestic river course, lake more than 60%, a large amount of dischargings of industrial and agricultural wastewater, sanitary wastewater, chemical oxygen demand (COD) (COD), biochemical oxygen demand (BOD) (BOD), the content of nitrogen and phosphorous of water body are exceeded standard greatly, blue-green algae frequently breaks out on a large scale, the water body severe depletion of oxygen, and organism can not in time carry out aerobic and decompose, the anerobe amount reproduction, cause water body blackout, smelly, aquatic animals and plants can't be survived, and water body is lost the ecological functions of self-recovery.One of the most effective and essential means of its improvement are exactly by oxygenating machine oxygenation in the water, increase the water body dissolved oxygen amount, reduce COD, SOD, also the survival and reproduction for aerobic microbiological, plankton and even aquatic animals and plants provides necessary and good condition, recover self-purification capacity and the ecological functions of water body, improve water quality.Many Engineering Projects prove, and aeration oxygen replenishing carries out separately or in conjunction with other measures, as aeration oxygen replenishing in conjunction with technology of biological membrane, can effectively eliminate water body black smelly, prevent that algae from breaking out, improve the output of aquatic animals and plants, with pollutant resources in water body.But existing higher energy consumption and the running cost of oxygenating machine has limited water body aeration oxygen replenishing technique in the application in this field and universal.

In tap water processing treatment process, deironing especially wherein, demanganization operation must be used aeration oxygen replenishing equipment.

Small-sized aeration oxygen replenishing pump is that aquarium fish is raised, fresh and living aquatic products is at transportation and sale and the keep-alive of restaurant, restaurant is fresh-keeping etc. that occasion is necessary, and such oxygen increasing pump characteristics are that quantity is very huge, power is less, and the oxygen kinematic coefficient is very low.

Existing water oxygenation equipment roughly is divided into water surface mechanical enhancement and aeration oxygen replenishing two classes under water.Water surface mechanical enhancement vane type, water wheel type, fountain type, plate-spinning rotary brush type, drop formula arranged; Oxygenation under water micro-pore aeration formula and jet-flow aeration formula arranged.

Water surface machinery oxygenating device is generally stir the shallow-layer water body or water projection entered in (or falling into) air, and the contact surface that increases water body and air enters in water airborne oxygen, increases the dissolved oxygen amount of water body.Its shortcoming is that energy consumption greatly, often can only increase the oxygen level on water body top layer and poor to the oxygenation effect of water bottom, be not suitable for the oxygenation than the deep water body, and noise is larger, a little less than the circulatory function of water body up and down.

Micro-pore aeration formula oxygenating machine in aeration oxygen replenishing is with air compressor machine or gas blower, pressure air to be delivered to through being layed in water-bed pneumatic tube near the aerator (aeration tube or aeration plate) that is arranged on (generally the bottom) in water under water, form with small bubbles enters in water from the micropore of aerator again, reaches the oxygenation purpose of various degree of depth water bodys.So its shortcoming is that the higher gas temperature of air pressure is also higher because the higher energy consumption of air pressure that needs is relatively large, some energy is wasted in the mode of heat dissipation, and Yin Gaowen causes the aging of gas pipe line; The effective service area of the oxygenation of every aeration tube or each aeration head is limited, therefore needs near big area laying installation a large amount of pneumatic tubes, aeration tube or the aeration plate bottom, and construction volume and difficulty of construction are large; Generally need drain the water in pond or pool during installation, large-area lake, river course are difficult to install; Solarization air cap is easily blocked; Oxygenating machine can lose efficacy because of pneumatic tube, aeration tube, the aging of aeration plate; The facility life-span is shorter, and fault is many, and is difficult in maintenance.The jetting type aeration oxygen increasing machine of oxygenation under water is air intake or is pressed in high velocity flow and sprays under water, and the following water oxygenation effect in its top layer is better than water surface oxygenating device, shortcoming be energy consumption greatly, jet length is limited under water, whole circulating effect is relatively poor.

With respect to the high operating mode with needing in a large amount of oxygenation of short period of water body unit volume oxygen requirement in sewage work's high capacity sewage treatment process, the oxygenation of aquaculture field and the reoxygenation of river and lake belong to the operating mode of the low oxygen requirement of large water body, simultaneously surface water oxygen enrichment and bottom water anoxic often; Therefore under the low oxygen requirement occasion of large water body, a desirable oxygenating machine not only will have enough oxygen transfer rates, but also the large performance with possessing the circulation of levels water body of unit service area will be arranged.

Existing all kinds of oxygenating device continues room for improvement limited because of the restriction of its principle of work.Simultaneously every kind of equipment has its deficiency separately: energy consumption is high, the stereo circulating function is poor, difficulty of construction large, can not be used for that big area offshore waters, failure rate far away are high, maintenance difficult, life-span are short etc.

The utility model content

The utility model is for above situation, uses the kinetic energy of water body in hydromeehanics and the principle that pressure can be changed mutually, proposed a kind of aeration oxygen increasing machine principle of work and technical scheme of brand-new low energy consumption high-efficiency.Make oxygenating machine have advantages of the function that circulates of less energy-consumption, large aeration rate, large oxygenation amount, hyperoxia kinematic coefficient, the big area that can have water body simultaneously concurrently and levels.

The utility model principle is as follows: from hydromechanical Bernoulli equation as can be known: the solid stream of water of permanent in a pipeline (the flow field situation does not change in time), as disregard frictional force, except gravity without External Force Acting, the water body of the different positions everywhere in current meets following rule each other: the static pressure (hydrostaticpressure) that kinetic energy+pressure-depth of water produces=constant, wherein hydrostaticpressure=depth of water multiply by the proportion of water, hydrostaticpressure is only relevant to the depth of water, and is irrelevant with kinetic energy; Therefore the flow rate of water flow of a certain position increases, and kinetic energy is corresponding increase also, and kinetic energy becomes quadratic relationship with speed, and the hydraulic pressure of this position is corresponding reduces; The flow rate of water flow of a certain position reduces, and kinetic energy also reduces, and hydraulic pressure increases accordingly.Therefore according to above-mentioned rule, propose principle of work of the present utility model: the intake-outlet of a pipeline links with outer water body respectively, pipe interior forms the water stream channel with outer water body isolation, aerator is arranged on the passage aisle cross-sectional area in current, the position of high flow rate of water flow in pipeline, and the aeration face of aerator is parallel with the water body main flow direction; When the current high speed flow was crossed the aeration face of aerator, the hydraulic pressure of aeration face can reduce, and significantly lower than the hydraulic pressure at outer water body same depth of water place, so the aeration pressure decreased of aerator, can increase aeration rate, reduce the aeration power consumption, increase the oxygen kinematic coefficient.There is device that current are done work as a certain position in the middle of at pipeline, W for the acting device to unit volume water body institute work, kinetic energy+the pressure of the upstream water body of acting device-hydrostaticpressure=H1, kinetic energy+the pressure of the downstream water body of acting device-hydrostaticpressure=H2, W=H2-H1, as the changing value of W much smaller than kinetic energy, when calculating the mutual conversion of kinetic energy and pressure, can ignore the impact of W.

The utility model is taked following technical scheme: a kind of water body aeration oxygen replenishing device of low power consumption high efficiency comprises aerator (the device head exposes to the sun), pneumatic tube, immobilising device (fixed link, fixedly hawser), buoyancy member etc.It is characterized in that: have a staving or pipeline to be fixed in water body by immobilising device, buoyancy member, be no less than within the aerator of 1 is arranged on staving or pipeline; Staving has water-in and water outlet, and intake-outlet communicates with outer water body respectively, and all lower than the outer water surface; Staving is inner to be consisted of take inner wall of barrel as the border and the water stream channel from water-in to water outlet isolated with outer water body; Surround the water stream channel of comparatively large cross-sectional area without the inner wall of barrel at aerator place, the long-pending PB that is defined as of the average cross-section of this water stream channel; Aeration face and the inner wall of barrel of each aerator consist of the water aeration circulation road jointly, water aeration circulation road water supply stream passes through, and the aeration of aerator carries out aeration towards current, and the cross-sectional area of each water aeration circulation road is respectively Pi(i=1,2 ...), wherein the minimum value in each Pi is defined as PA; PB＞＞PA, and PB/PA is greater than 3; The aeration face of aerator is parallel with the main flow direction of water body; Having an outer power device or facility to drive water body flows in water stream channel, when current flow through cross-sectional area and are the water aeration circulation road of PA, the flow velocity of water body and kinetic energy will increase, hydraulic pressure will reduce, therefore the aeration pressure of aerator that is in cross-sectional area and is the passage place of PA reduces, the aeration power consumption reduces, and aeration rate increases.Thereby reach reduce power consumption, large aeration rate, the purpose of large oxygenation amount and high power oxygenation coefficient.

principle of work to such scheme further is explained as follows: the ratio PB/PA of large small cross-sectional area is set as more than 3 times, such as being made as 10 times, because water is incompressible fluid, flow velocity and cross-sectional area are inversely proportional to, the flow velocity at the flow velocity at little cross-sectional area PA place/large cross-sectional area PB place=10, and kinetic energy becomes quadratic relationship with flow velocity, the kinetic energy of current at little cross-sectional area PA place is 100 times of kinetic energy at large cross-sectional area PB place, increase along with kinetic energy, sectional area is corresponding the reducing of hydraulic pressure at the water aeration circulation road place of PA, as the kinetic energy increased value greater than herein hydrostaticpressure (depth of water multiply by the proportion of water), hydraulic pressure herein is namely lower than normal atmosphere, parallel with the main flow direction of water body because of the aeration face of aerator, the aeration pressure of aeration face is the hydraulic pressure of current herein, the reduction effect of consequent small cross-sectional area PA place's hydraulic pressure and aeration pressure can reach following effect individually or simultaneously: reduce the power consumption of gas blower, increase aeration rate, in the subatmospheric situation of hydraulic pressure, need not the gas blower acting, under atmospheric effect, the air on the water surface is inhaled into, and from aerator to the current aeration, can carry out the idle aeration of so-called negative pressure through intake hood, pneumatic tube.Simultaneously because the length along the flow direction of aerator only accounts for the very little ratio of whole water stream channel length, after the current high speed flow is crossed aerator, namely recover normal low flow velocity, therefore gas residence time of ducking in drink is only had very little impact.

In practical application: cross-sectional area is that the flow rate of water flow at the water stream channel place of PB is generally 0.2 meter per second～1 meter per second, the flow rate of water flow scope at little cross-sectional area PA place is generally 2 meter per seconds～8 meter per seconds, at little cross-sectional area PA place, hydraulic pressure is corresponding has reduced to be equivalent to the approximately hydrostaticpressure (2～32KPa) of 0.2～3.2 meter depth of water.the flow rate of water flow at for example little cross-sectional area PA place is 4.5 meter per seconds, reduce the approximately hydrostaticpressure of 1 meter depth of water (10KPa), as aerator being arranged on the depth of water less than the position of 1 meter, disregard the friction resistance in gas pipe line and aerator, this aerator need not gas blower pressure air is provided, can carry out negative pressure idle aeration under the normal atmosphere effect, as aerator being arranged on the position of 1～1.5 meter of the depth of water, underwater aeration device than other kinds, can reduce the aeration pressure (relative pressure of this force value take water surface normal atmosphere as Fixed Initial Point more than 2/3, be negative value lower than normal atmosphere), gas blower is when gaining merit aeration, can significantly reduce pressure of blast, air blast power consumption or increase considerably aeration rate.

As preferably: described outer power device is the aerating apparatus that is comprised of gas blower, pneumatic tube, aerator.

Described outer power device is a water screw or water pump.

Described outer power facility is the cofferdam that one both sides are respectively a high-water water body and a low-water level water body, in water stream channel, the kinetic energy of current derives from the waterhead of two water bodys, waterhead is referred to as head, the water-in of described water stream channel is in high-water water body one side, and water outlet is in low-water level water body one side.

Described aerator is through pneumatic tube and intake hood is direct and atmosphere on the water surface is connected, and carries out the idle aeration of negative pressure under the barometric point effect.

Described aerator provides the pressure air aeration of gaining merit by gas blower.

Described aerator has 2 at least, and the existing aerator that provides pressure air to gain merit aeration by gas blower has again the aerator that carries out the idle aeration of negative pressure through the barometric point effect.

Described staving is divided into two sections of up and down, and lower barrel body material proportion is a bit larger tham water, can go deep into the water body depths during work or sink to the bottom, and the upper barrel body water outlet is a little less than the outer water surface; But the two sections staving relatively sliding in up and down make equipment applicable to the occasion of the various depth of waters; There is can be mutually spacing groove the upper end of lower barrel body and the lower end of upper barrel body, prevent that two stavings break away from mutually; The two staving gaps up and down of relatively sliding less than 3 millimeters, make the water that only has minute quantity can flow through this gap.

The lower end surrounding of described lower barrel body has window of receiving water as water-in, and the lower edge of window is 5-15 centimetre to the lower end distance of lower barrel body.

The water outlet of described staving is equipped with a water guider, water guider makes the water outlet after aeration oxygen replenishing directly not lead to outer water body, but through flowing to outer water body after water guider, water guider is provided with guiding gutter again, and water outlet is flowed out from the opening part of guiding gutter.

Described water guider and on guiding gutter maintain static, make water body only flow to one or several specific fixed-direction of the water surface through guiding gutter.

Described water guider can rotate in a circumferential direction, and the guiding gutter on it makes the water outlet current to water guider, one circumferential reverse thrust be arranged, and promote water guider and guiding gutter work 360 degree and rotatablely move, thereby the water body that drives after oxygenation periodically flows to water surface all directions.

The water outlet of described staving is lower than the outer water surface.

The beneficial effects of the utility model: 1, reduce aerator aeration pressure, reach the effect of large aeration rate, large oxygenation amount, hyperoxia kinematic coefficient, reduce power consumption, low operating cost.Compare the blast aeration tank of other kind, aerator is in the identical depth of water, and aeration pressure of the present utility model significantly reduces.The hydrostaticpressure value of the residing depth of water of meritorious aerator of the present utility model position, being generally less than because of current is 1.5 times of the kinetic energy values (or the force value that reduces) that increases of the passage of PA through cross-sectional area, therefore than other kind aeration oxygen increasing machines, can reduce the aeration pressure more than 2/3, minimizing energy consumption that can be at double, or under same energy consumption, increase exponentially the oxygenation amount; Simultaneously at the more shallow idle aerator of position installation of the depth of water, hydrostaticpressure value herein＜because of current be kinetic energy values-2KPa that the passage of PA increases through cross-sectional area, therefore can need not power consumption under the normal atmosphere effect carries out the idle aeration of negative pressure, further increases considerably oxygenation effect.Relatively overall, comparable other kind aeration oxygen increasing machines of aeration oxygen increasing machine of the present utility model improve several times to tens times with oxygenation effect and oxygen kinematic coefficient, and corresponding energy consumption drops to part to ten part of other kind aeration oxygen increasing machines.2, equipment investment cost is low, because the oxygen kinematic coefficient has improved several times, reaches same oxygenation amount, compares the oxygenating machine of other kinds, only needs part or more low power power set, significantly reduces power and the cost of investment of gas blower.3, can use fan with low voltage, because of the reduction of aeration pressure, can use conventional cheap small power to hang down the blast apparatus of blast, avoid to adopt expensive high pressure positive blower such as roots blower, air compressor machine.4, in conjunction with the device of water guider of the present utility model and two-section type staving, there is the separate unit oxygenating machine to realize the advantage of big area and the circulation of levels water body, and this function that other kind oxygenating machines all do not possess, be particularly suitable for the application scenario in the little oxygen requirement in large waters in the oxygenation field of aquaculture and river and lake reoxygenation field, simultaneously can strengthen photosynthesis, improve the situation of water-bed long term hypoxia, increase the turnout of hydroplankton, make organic pollutant in water body be converted into the source of nutrition of aquatic animals and plants.5 installation, maintenances are convenient, can not lay a large amount of gas pipe lines at the bottom, in conjunction with the device of two-section type staving of the present utility model, can easily be applied to the waters of the various depth of waters.6, can utilize different types of outer power resources.Particularly there is the water level potential energy (head) of self-assembling formation to exist in outside terrain environment, do not need supply of electric power can carry out effective aeration oxygen replenishing, and required head is very low, has the head of 3-5 centimetre to satisfy the demand, as higher in head, can realize multistage oxygenation; More conventional drop water aeration technique can significantly improve oxygenation effect, reduces the requirement to head height.7, because the oxygen kinematic coefficient is high, power demand is little, at water field of big area, because of the offshore distance, in the inconvenient situation of powering, utilizes the devices such as photovoltaic, wind-power electricity generation or windmill of smaller power can satisfy the power demand of aerating apparatus.

Description of drawings

Fig. 1 is the structural representation of embodiment 1.

Fig. 2 is the structural representation of embodiment 2.

Fig. 3 is the structural representation of embodiment 3.

Fig. 4 is the structural representation of aerator.

Fig. 5 is the A-A cross section view of Fig. 4.

Fig. 6 is the local structure schematic diagram of aerator in barrel body wall.

In figure: 1, idle aerator 2, meritorious aerator 3, upper barrel body 4, lower barrel body 5, intake hood 6, pneumatic tube 7, buoyancy member 8, fixed link 9, gas blower 10, water screw 11, cofferdam 12, barrel body wall 13. water aeration circulation road 14. aeration faces.

Embodiment

Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.

Embodiment 1: as shown in Figure 1, staving is connected and fixed in water by buoyancy member 7 and fixed link 8, and the staving upper end is water outlet, and the lower end is water-in, and water outlet is lower than the water surface; 1 above aerator is arranged in staving, inner wall of barrel without the aerator place surrounds the larger water stream channel of cross-sectional area, mean value without aerator place water stream channel cross-sectional area is called large cross-sectional area PB, as shown in Fig. 4-6, the aeration face 14 of each aerator is the water aeration circulation road 13 of Pi with the common formation cross-sectional area of barrel body wall 12, PB＞Pi, and the minimum value in each Pi is called little cross-sectional area PA, PB＞＞PA, and PB/PA is greater than 3; The aeration face 14 of aerator is parallel with the main flow direction of water body; Outer power device (facility) is the meritorious aerating apparatus of gas blower 9, pneumatic tube 6, meritorious aerator 2 compositions.

As preferably, staving is divided into two sections of up and down, and lower barrel body 4 material proportions are a bit larger tham water, can go deep into the water body depths during work or sink to the bottom, and upper barrel body 3 water outlets are a little less than the outer water surface; But two sections staving relatively sliding in up and down; There is can be mutually spacing groove the upper end of lower barrel body and the lower end of upper barrel body, prevent that two stavings break away from mutually; The two staving gaps up and down of relatively sliding are less than 3 millimeters.

Working process: after the aerator in outer power device is beginning aeration, bubble rises, in bucket, the water body of the above part of aerator is because of the existence of bubble, proportion is less than the proportion of outer water body, so in the identical degree of depth, the hydraulic pressure of outer water body has upwards lifting effect to water body because of bubble simultaneously greater than the hydraulic pressure of inner bucket water body in uphill process, promote at pressure difference and bubble under the acting in conjunction of two kinds of factors, water body form gradually stable from the water-in to the water outlet flowing from bottom to top; Be the current of 0.2～1 meter per second according to different aeration rates formation speed in the water stream channel of large cross-sectional area PB, the ratio of adjusted design size cross-sectional area PB/PA makes the flow rate of water flow of the water aeration circulation road that flows through little cross-sectional area PA reach required design value.As the flow rate of water flow that flows through the water aeration circulation road of sectional area PA is 4.5 meter per seconds, the corresponding approximately hydrostaticpressure of 1 meter (10KPa) of aeration pressure that reduces.For the air blast function starts aeration, the blast that the hydrostaticpressure of the installation site of an aerator in outer power device must produce less than gas blower, the maximum wind pressure that hydrostaticpressure+2KPa＜gas blower produces of this aerator of general requirement installation site.In this device, the flow velocity at cross-sectional area PB place is that the kinetic energy of current of 0.2～1 meter per second is from the acting of meritorious aerating apparatus, the acting amount W of power set to unit of water body, reduce value much smaller than the kinetic energy increased value or the pressure that at cross-sectional area are the water aeration circulation road place of PA, therefore can ignore W to the impact of the conversion of kinetic energy and pressure.

Whole aeration oxygen replenishing system can only have an aerator, namely only has an aerator in outer power device, this aerator connects gas blower 9 by pneumatic tube 6, aerator starts after aeration progressively raising along with flow velocity in passage until stable, little cross-sectional area PA place aeration pressure progressively reduces until be stabilized in a certain minimum value, aeration rate progressively increases until be stabilized in a certain maximum value, and oxygenation amount and oxygen kinematic coefficient increase simultaneously.

The meritorious aerator of whole aeration oxygen replenishing system in outer power device, the idle aerator 1 of negative pressure can also be installed, idle aerator 1 connects intake hoods 5 through pneumatic tube 6, and idle aerator 1 generally is arranged on meritorious aerator 2 tops, the kinetic energy values at PA place, position〉hydrostaticpressure+2KPa.Start after aeration progressively increase along with flow velocity in passage until stable, the aeration surface pressure reduces, and the aeration rate of meritorious aerator increases, and idle aerator also produces a large amount of aerations.Theoretical according to Inka aeration: in bubble formation and rupture process, air is the highest to the oxygen transfer rate of water body, and a large amount of bubbles that idle aerator provides can increase considerably the oxygenation amount.

Meritorious aerator 2 in outer power device in whole aeration oxygen replenishing system, except there being a meritorious aerator to be arranged on the Position of hydrostaticpressure less than the blast of gas blower generation, can also be at the deep water position installation in addition meritorious aerator of hydrostaticpressure greater than the blast of gas blower generation.When just beginning aeration, the air pressure that the meritorious aerator of deep water position produces greater than gas blower because of hydraulic pressure can not aeration; Until stable, the aeration surface pressure reduces along with the progressively increase of flow velocity in passage, and the aeration rate of the meritorious aerator of Position increases, the air pressure that on the meritorious aerator of deep water position, the hydraulic pressure of aeration face produces less than gas blower, the also aeration work of this aerator.

The aeration pressure of the meritorious aerator in the present embodiment is significantly less than the water pressure with the outer water body of the degree of depth, and be generally less than with 1/3 of degree of depth hydrostaticpressure, therefore significantly reduce power consumption, and described meritorious aerator when being provided, outer power itself has the aeration oxygen replenishing function.Can determine as the case may be the installation number of aerator during this scheme implementation, aerator can be one or more, but must have at least 1 aerator to provide the pressure air aeration of gaining merit by gas blower, as outer power resources, other the aerator meritorious aeration that can provide pressure air to carry out low power consumption high efficiency by gas blower, also can carry out negative pressure idle aeration.

Embodiment 2: as shown in Figure 2, staving or body 3 are realized the location by buoyancy member 7 and fixed link 8, and two different water bodys of water level are separated in a cofferdam 11, and the outer power resources of current are the waterhead (head) of these two water bodys; There is a staving (pipeline) intake-outlet to be in respectively in high-water water body and low-water level water body, wherein water-in is in high-water one side, water outlet is in low-water level one side, and water outlet is lower than the water surface of low-water level, and is no more than 15 centimeters with the distance of the low-water level water body water surface; More than one aerator is arranged in staving, the little cross-sectional area of the common formation of aerator and inner wall of barrel is the water aeration circulation road of PA, inner wall of barrel without the aerator place surrounds the larger water stream channel of cross-sectional area, the mean value of this cross-sectional area is called large cross-sectional area PB, PB＞＞PA, and PB/PA is greater than 3; The aeration face of aerator is parallel with the main flow direction of water body; Aerator is generally idle aerator 1, and fitting depth is less than 1 meter; And occasion that oxygenation demand large especially little at head, aerator also can adopt meritorious aerator.

Working process: when the water body in high-water flows to the low-water level water body because of pressure difference by staving, according to different heads, can produce different flow velocitys in staving.As disregard frictional force, the head of 5 centimeters, can be in staving the water stream channel place of large cross-sectional area PB produce the approximately flow velocity of 1 meter per second, ratio as large cross-sectional area PB and the area of little cross-sectional area PA is 5, the flow velocity at little cross-sectional area PA place is 5 meter per seconds, corresponding minimizing is the hydraulic pressure of 1.2 meters depth of waters (12KPa) approximately, and aerator is arranged on the depth of water less than the position of 1.0 meters, can carry out idle aeration; Aerator in the depth of water greater than 1 meter less than the position of 1.5 meters, also can carry out the meritorious aeration of reduce power consumption.

In actual use, there are many occasions to have the formed waterhead of physiographic relief, as mountain stream, river, morning and evening tides etc., use the present embodiment, as long as very little head is arranged, need not power consumption, can carry out effective aeration oxygen replenishing.

In the situation that without the head of self-assembling formation, also can make waterhead with the low lift and large flow rate water pump, use the utility model embodiment.

Embodiment 3: as shown in Figure 3, staving 3 vertically is arranged in water and by buoyancy 7 and fixed link 8 and realizes the location, an above aerator is arranged in staving 3, the lower end of staving has water-in, water outlet is in the staving upper end and lower than the outer water surface, and the distance of water outlet and the outer water surface is no more than 15 centimeters; The water screw 10 of the one large flow of the slow speed of revolution is installed in a certain position of staving, water screw 10 can be by electric motor driving, also can be driven by windmill, it is the water body flow that makes progress of 0.2 meter per second～1 meter per second that the water stream channel place that is PB without the large cross-sectional area of aerator in staving forms flow velocity; The flow velocity that the little cross-sectional area PA place at aerator place is installed is 2 meter per seconds～6 meter per seconds, corresponding minimizing aeration pressure is the hydrostaticpressure of 0.2～1.8 meter approximately, reduce by 1 meter hydrostaticpressure as aeration pressure, the depth of water of the installation site of aerator less than 0.8 meter, can be carried out idle aeration oxygen replenishing.

This scheme is used most suitable in need to breaking the large reservoir of lower leaf on water body and Deep lake summer, can accomplish that the circulation of levels water body and oxygenation at one stroke two must.On far away, the spacious water surface of offshore, the wind field condition is generally better, and it is efficient and suitable utilizing windmill.

Above-mentioned 3 schemes in the occasion of the high oxygen requirement of high capacity, are not established water guider; Occasion in the low oxygen requirement in large waters can be provided with water guider.

Claims

1. the water body aeration oxygen replenishing device of a low power consumption high efficiency, comprise aerator, pneumatic tube, immobilising device, buoyancy, it is characterized in that: have a staving or pipeline to be fixed in water body by described immobilising device, buoyancy; Be no less than within the aerator of 1 is arranged on staving or pipeline; Staving has water-in and water outlet, and water-in and water outlet are connected with outer water body respectively; Staving is inner to be consisted of take inner wall of barrel as the border and the water stream channel from water-in to water outlet isolated with outer water body; Each aerator and inner wall of barrel be common to be consisted of has distinctive cross-sectional area separately and its value to be respectively P(i) the water aeration circulation road, i=1,2,3, each P(i) minimum value in is defined as little cross-sectional area PA, and the average cross-section of the water stream channel that surrounds without the inner wall of barrel at aerator place is long-pending is defined as large cross-sectional area PB; PB/PA〉3; The aeration face of aerator is parallel with the main flow direction of water body; Dynamic device drives water body and flows in water stream channel.

2. the water body aeration oxygen replenishing device of a kind of low power consumption high efficiency according to claim 1, is characterized in that the aerating apparatus of described power set for being comprised of gas blower, pneumatic tube, aerator.

3. the water body aeration oxygen replenishing device of a kind of low power consumption high efficiency according to claim 1, is characterized in that described power set is a water screw or water pump.

4. the water body aeration oxygen replenishing device of a kind of low power consumption high efficiency according to claim 1, it is characterized in that described power set is the cofferdam that one both sides are respectively a high-water water body and a low-water level water body, in water stream channel, the kinetic energy of current derives from the waterhead of two water bodys, the water-in of described water stream channel is in high-water water body one side, and water outlet is in low-water level water body one side.

5. the water body aeration oxygen replenishing device of according to claim 3 or 4 described a kind of low power consumption high efficiencies, is characterized in that described aerator directly is connected with atmosphere through intake hood, pneumatic tube, carries out negative pressure idle aeration under the barometric point effect.

6. the water body aeration oxygen replenishing device of according to claim 2 or 3 or 4 described a kind of low power consumption high efficiencies is characterized in that described aerator provides the pressure air aeration of gaining merit by gas blower.

7. the water body aeration oxygen replenishing device of according to claim 2 or 3 or 4 described a kind of low power consumption high efficiencies, it is characterized in that described aerator has 2 at least, the existing aerator that provides pressure air to gain merit aeration by gas blower has again the aerator that carries out negative pressure idle aeration through the barometric point effect.

8. the water body aeration oxygen replenishing device of a kind of low power consumption high efficiency according to claim 1, it is characterized in that described staving is divided into two sections of up and down, lower barrel body material proportion is a bit larger tham water, can go deep into the water body depths during work or sink to the bottom, and the upper barrel body water outlet is a little less than the outer water surface; But two sections staving relatively sliding in up and down; There is can be mutually spacing groove the upper end of lower barrel body and the lower end of upper barrel body, prevent that two stavings break away from mutually; Relatively sliding up and down between two stavings the gap less than 3 millimeters.

9. the water body aeration oxygen replenishing device of a kind of low power consumption high efficiency according to claim 8, is characterized in that the lower end surrounding of described lower barrel body has window of receiving water as water-in, and the lower edge of window is 5-15 centimetre to the lower end distance of lower barrel body.

10. the water body aeration oxygen replenishing device of a kind of low power consumption high efficiency according to claim 1, the water outlet that it is characterized in that described staving is equipped with a water guider, water guider make water outlet after aeration oxygen replenishing flow to again after water guider outside water body, water guider is provided with guiding gutter, and water outlet is flowed out from the opening part of guiding gutter.

11. the water body aeration oxygen replenishing device of a kind of low power consumption high efficiency according to claim 10, it is characterized in that described water guider and on guiding gutter maintain static, make water body only flow to one or several fixing direction.

12. the water body aeration oxygen replenishing device of a kind of low power consumption high efficiency according to claim 10, it is characterized in that described water guider can rotate in a circumferential direction, guiding gutter on it makes the water outlet current to water guider, one circumferential reverse thrust be arranged, promote water guider work 360 degree and rotatablely move, thereby the water body that drives after oxygenation periodically flows to water surface all directions.

13. the water body aeration oxygen replenishing device of a kind of low power consumption high efficiency according to claim 1 is characterized in that the water outlet of described staving is lower than the outer water surface.