CN2069031U

CN2069031U - Water-collecting type water turbine

Info

Publication number: CN2069031U
Application number: CN90203165U
Authority: CN
Inventors: 余新河
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-03-16
Filing date: 1990-03-16
Publication date: 1991-01-09

Abstract

The utility model discloses a flow-collecting type water turbine without a high water head, barrage, and dam construction, in particular to a driving device which is installed in an ordinary river and is used as a generator. The utility model utilizes a flow guide device to make upper and lower part wing panels of a blade wheel shaft line accept different water flow acting force. Thereby, a force difference is caused to produce force moment to make blade wheel rotated.

Description

Water-collecting type water turbine

The utility model relates to a kind of hydroelectric collecting type water turbine that is used for, and this water turbine can be installed in and carry out work in the common river.

Main driving arrangement in the present hydroelectric power plant in the world is a water turbine, and its action principle is the energy that the water of interception in reservoir or river is become driving device, utilizes this energy to drive power generating equipment.

Hydroelectric power is important in the world energy source, is worth the waterpower resourses of exploitation that 38 * 10MW is arranged according to estimates economically, and the waterpower of having developed already at present approximately has only 37 * 10MW, promptly accounts for 10, and 90 percent water can not be utilized as yet in addition.The water in Africa and Asia can be laid in basically not development and use still.The reason that produces this situation mainly is to build reservoir to need a large amount of man power and materials, and investment is expensive.Because, no matter be the kaplan type turbine of Greco-Roman Style, or modern age general various impulse turbines and reaction turbine, its working principle all is to rely on the potential energy of water to be transformed into the energy of flow to impact impeller, drives the water turbine work done.Do not have head, water turbine just can not be worked.Even the perfusion type water turbine, general also the requirement has the head more than a meter to work.Fairly obvious, water can should be used for changing into electric energy, must select the bigger place of the height of water, perhaps barrage is built reservoir.This is not only costly, accounts for the field and takes up an area of, and brings difficulty to national economy and the people's livelihood, and might destroy the ecological balance, brings out earthquake, and the time one is of a specified duration, and reservoir can crumble one day, will bring the consequence that is difficult to predict.

Task of the present utility model is to seek a kind of water turbine of new structure, and it does not need construction of reservoir maybe needn't seek the big part of the height of water, and it can be worked in general river, builds all disadvantages that reservoir was brought to reach to eliminate.

The present technique solution is, immerses the water turbine in the current, utilizes a flow guide device, makes fin suffered bourn acting force in impeller axis top and the bottom different and cause power poor, produces moment and makes the impeller revolution.

The water turbine of wing formula is always placed in the current, because fin suffered bourn acting force in impeller top and the bottom equates that promptly the active force of Chan Shenging equates with reaction force, impeller is in state of equilibrium, and impeller does not produce rotation motion.If the current that flow through the guide plate face are quickened at impeller front (over against water (flow) direction) arrangement one flow guide device, impact fin, increased water flow is to the impact force of aerofoil; And the fin of impeller bottom is in the inner chamber of flow guide device, be not subjected to the direct percussion of current, thereby the effect of suffered water is less.The summation of the suffered bourn acting force of impeller top and the bottom fin is unequal like this, produces moment and makes the impeller revolution.In the close part with fin of guide plate end, the flow rate of water flow of guide plate is very fast, and therefore the hydraulic pressure at this place produce the Bernoulli effect much smaller than the hydraulic pressure of flow guide device inner chamber, also produces the useful effect power that promotes fin.In order to make flow guide device can play the effect of reducing friction and quickening current, guide plate should be hyperbola along the sectional shape of current, also can make the approximate Double curve for easily manufactured.The material of guide plate should be corrosion-resistant, makes with stainless steel, also available corrosion resistant plastics, and the plate face will polish.

In order to keep the fin can proper functioning, reduce the resistance to water-flow of the wing back of the body, the level cross-sectionn shape of the wing back of the body should be a hyperbola, the edge of a wing is thin and thick in the middle part of the wing back of the body, this curve it would be desirable hyperbola, for easy to process, also can make similar hyperbola or smooth curve.Fin will be considered intensity, should be by the principle design of fixed end overhang, and itself and impeller junction will have enough section area.Fin can be solid, also can make hollowly, and fin useable glass steel is made, and common is to make with the glass fibre reinforced plastics of epoxy resin.Also available light metal of fin even timber are made.

Accompanying drawing of the present utility model is as follows:

Fig. 1 a is the utility model collecting type water turbine front view;

Fig. 1 b is the utility model collecting type water turbine side view;

Fig. 2 is a collecting type water turbine work schematic representation;

Fig. 3 is collecting type water turbine fin shape of cross section figure.

Fig. 1 a and Fig. 1 b are depicted as collecting type water turbine sketch.On water turbine housing (H), axle end can be passed through actuator drives electricity generating device (G) with Bearing Installation at wheel shaft (0) two ends, perhaps direct and sealed type generator electric; Fixing impeller (1) on the wheel shaft, four or more fin (2) is being installed on the impeller.Flow guide device (3) is fixedlyed connected with housing.Whole water turbine can be suspended on the spreader that is fixed in the riverbank and soak in water, perhaps with on the fixing riverbed of support.

Fig. 2 is a collecting type water turbine work schematic representation.Wheel shaft (0) is a fixed connection with impeller (1), and four or more fin (2) is installed on the impeller, and the design of single armed beam stress situation is pressed by fin system, and the sectional area maximum of its root (promptly being fixed on the part of impeller) is dwindled to the wing tip direction gradually.Current the place ahead at impeller is installed with flow guide device, and its guide plate end B will under the topic, dwindle the gap of end B and wing tip near wing tip before not hindering fin rotating, be beneficial to cause the Bernoulli effect.Fin is subjected to the current positive effect when the d of position, impeller turns round along the direction of arrow, when fin when a point and b point enter the flow guide device inner chamber, the active force of suffered water reduces, and when close with guide plate end B, produce the Bernoulli effect fin is risen.Fin because the current of guide plate quicken, impacts fin during to the C point, makes wheel rotation.

Figure 4 shows that the fin diagrammatic cross-sectional view.E is an aerofoil, and section line is a straight line, and promptly aerofoil is a plane.F is the wing back of the body, is the thin smoothed curve of thick end in, and optimum scheme is hyperbola.For easily manufactured, also can be made into similar hyperbola.When water turbine very hour, corresponding fin is also less, this moment fin with solid wooden making, suitable effect is also arranged.For reducing friction, flap surface need be polished.

The utility model has been broken through the form that existing power dam adopts, and does not need barrage to build dam or construction reservoir, but all can install and use in general river.China river gathers, and uses collecting type water turbine of the present utility model, can bring the tremendous economic effect.

Claims

1, a kind of collecting type water turbine is made up of wheel shaft (0), impeller (1), fin (2), it is characterized in that, another part of forming water turbine is flow guide device (3), and its guide plate is a hyperbola along the sectional shape of water (flow) direction.

2,, it is characterized in that described guide plate is the approximate Double curve along the sectional shape of water (flow) direction according to the collecting type water turbine of claim 1.

3, according to the collecting type water turbine of claim 1, it is characterized in that described fin shape of cross section, its aerofoil transversal is a straight line, its wing back of the body is the thin smoothed curve of thick end in.

4, according to the collecting type water turbine of claim 3, it is characterized in that described fin shape of cross section, its wing back of the body is hyperbola.

5, according to the collecting type water turbine of claim 3, it is characterized in that described fin shape of cross section, its wing back of the body is approximate Double curve or smoothed curve.

6,, it is characterized in that described guide plate makes with corrosion-resistant stainless steel according to the collecting type water turbine of claim 1 or 2.

7,, it is characterized in that described guide plate makes with wear-resistant plastic according to the afflux water turbine of claim 6.