CN210289992U

CN210289992U - Bent pipe type runner and multi-nozzle water turbine thereof

Info

Publication number: CN210289992U
Application number: CN201921186496.0U
Authority: CN
Inventors: 陈荣江
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-26
Filing date: 2019-07-26
Publication date: 2020-04-10
Anticipated expiration: 2029-07-26

Abstract

The utility model discloses an elbow-type runner, which comprises an annular runner shell, a circular inner drum plate sleeved in the runner shell with a shaft hole and a plurality of elbows; the runner shell and the inner drum The plate is coaxial; the elbow includes a water inlet section and a water outlet section; a number of elbows are evenly fixed between the runner shell and the inner drum plate at the same angle in the vertical direction, and the water inlets of the inlet sections of the elbows are located along the edges of the elbows. The loop lines of the elbow are arranged in the same direction, the inlet section of the elbow is set above the outlet section, and the inlet section and the outlet section of the elbow are arranged obliquely. The utility model also discloses a multi-nozzle water turbine with the above-mentioned elbow-type runner. The runner and the water turbine of the utility model are simple in structure, small in footprint and strong in adaptability, and can be applied to a water head of more than 10 m. Most of the water flow of the elbow-type multi-nozzle turbine can perform repeated impact work of varying times, which improves the work efficiency and has a high power conversion rate.

Description

Bent pipe type runner and multi-nozzle water turbine thereof

Technical Field

The utility model relates to a bent pipe formula runner and multi-nozzle hydraulic turbine thereof belongs to hydroelectric generation machinery technical field.

Background

With the development of global industrialization, the living standard of people is continuously improved, the energy problem is gradually highlighted, the development of clean renewable energy is a necessary trend of human development requirements, however, the dam building cost is huge, the available water resource is bound to be limited, a high-efficiency water turbine is developed, the water turbine is economical, the limited hydraulic resource can be well utilized, and the water turbine is an optimal way for solving the electricity utilization problem of people.

The existing impulse water turbines in the market are divided into a bucket type, an inclined-jet type and a double-jet type, which have respective defects, low efficiency and limited adaptability. The double-stroke water turbine firstly impacts the upper blades and then acts on the lower blades of the rotating wheel to perform secondary energy exchange and repeatedly double-stroke work, but the efficiency is low in general, and the double-stroke water turbine is used in a small power station with the application water head below 60 m. The length of the blades of the inclined jet turbine accounts for two thirds of the radius of the runner, the impacted surface is too wide, the high-pressure jet is quickly dispersed after shooting the blades and then discharged from the lower part, and the design efficiency is also lower. Although the efficiency of the shear-type water turbine is superior to that of the double-stroke type and the inclined-jet type, the vertical shaft type can only be provided with one rotating wheel, the number of nozzles can only be six at most for various reasons, and a small amount of energy is not applied for the second time after water impacting a water bucket is used for working.

SUMMERY OF THE UTILITY MODEL

The above-mentioned weak point that exists to prior art, the utility model aims to provide a combine bucket type, oblique impulse type and each hydraulic turbine advantage of double-stroke formula to solve the inefficiency that current hydraulic turbine exists, adaptability is limited and can't fully collect rivers energy scheduling problem.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

the elbow type runner comprises an annular runner shell, a circular inner drum disc and a plurality of elbows, wherein the circular inner drum disc is sleeved in the runner shell and is provided with an axle hole; the rotating wheel shell is coaxial with the inner drum; the elbow comprises a water inlet section and a water outlet section; a plurality of the return bend is with the vertical even fixed setting of angle between runner shell and interior drum dish, and is a plurality of the water inlet of section is intake along the loop syntropy setting at a plurality of return bends places to the return bend, the section setting of intaking of return bend is in the top of a water section, the section of intaking and the equal slant setting of a water section of return bend. The elbow is arranged in the rotating wheel, the nozzle matched with the rotating wheel is just opposite to the water inlet of the water inlet section, and high-pressure jet flow sprayed from the nozzle is sprayed to the upper end of the water outlet section of the elbow through the water inlet section to enable the rotating wheel to rotate, so that the water turbine is driven to do work.

Replace the blade in the current hydraulic turbine through the return bend, high-pressure jet gets into the impact roller from the section of intaking, and it is straight can guarantee that the efflux does not disperse in the section of intaking, and the impact force is concentrated high-efficiently. When the high-pressure jet flow nozzle works, the high-pressure jet flow of one nozzle can only be concentrated between one bent pipe or two bent pipes, and the same rotating wheel uses a plurality of nozzles without mutual influence.

Furthermore, the water inlet section of the elbow forms an included angle of 60-70 degrees with the vertical direction. The elbow water inlet section and the nozzle in the angle range are convenient to be matched with each other.

Furthermore, an included angle of 80-90 degrees is formed between the water inlet section and the water outlet section of the elbow. Through the setting of the elbow water inlet section, the elbow water outlet section, the elbow water inlet section and the vertical angle, the generated energy of the water turbine can be effectively improved, and all parts can be conveniently matched with one another for use.

Furthermore, corners of the elbow are arranged in a round angle manner; the corner of the elbow is provided with a plurality of rollers which are arranged on the inner wall of the outer corner of the corner and are opposite to the water inlet of the water inlet section. Four rollers are arranged at the corner of the elbow from top to bottom, high-pressure jet flow sprayed from the nozzle directly impacts the four rollers to enable the rotating wheel to operate and do work, and after the water impacts the rollers, the four rollers randomly and freely rotate in a non-directional mode, the impact surface is increased, and the service life of the elbow can be prolonged.

Furthermore, the upper edge of the water inlet section of the elbow is higher than the inner drum plate. After the height of the water inlet is slightly increased, the nozzle is convenient to be matched with the water inlet of the water inlet section of the elbow.

The utility model also relates to a bent pipe type multi-nozzle water turbine, which comprises the rotating wheel, the rotating wheel shaft, the rotating shaft, the belt pulley, the belt, a plurality of nozzles connected with a plurality of water diversion pipes and a generator, wherein the rotating wheel shaft is fixedly arranged on the rotating wheel; the rotating wheel is movably sleeved on the rotating wheel shaft through the inner drum; the rotating shaft and the rotating wheel shaft are vertically arranged in parallel, the belt pulley is fixedly sleeved on the rotating shaft, and the belt pulley is connected with the rotating wheel shell through a belt; the rotating shaft is connected with an input shaft of the generator through a belt; the nozzle is arranged above the elbow and is opposite to the water inlet of the water inlet section of the elbow, and the high-pressure jet flow jetted by the nozzle is parallel to the water inlet section of the elbow; high-pressure jet flow is sprayed to the elbow through the nozzle to drive the rotating wheel to rotate on the rotating wheel shaft, so that the belt pulley and the rotating shaft are driven to rotate, and the generator is driven to generate electricity.

Furthermore, the upper end of the runner shell is provided with a waterproof ring extending upwards, and the upper edge of the waterproof ring is higher than the water inlet of the water inlet section of the elbow. Through the setting of waterproof ring, can prevent effectively that the nozzle spun high-pressure jet from spattering in disorder and influencing the normal work of equipment.

Furthermore, a plurality of waterproof strips for preventing water flow from sputtering are arranged on the inner wall of the waterproof ring. Through the cooperation of the waterproof strips and the waterproof rings, water is prevented from being splashed outwards under the action of centrifugal force.

Furthermore, a plurality of rotating wheels are movably sleeved on the rotating wheel shaft; the belt pulleys are the same in number with the rotating wheels and are respectively matched with the rotating wheels; the outer diameters of a plurality of rotating wheels arranged on a rotating wheel shaft are gradually increased layer by layer from top to bottom to form a tower type; the bottoms of the other rotating wheels except the rotating wheel at the bottom layer are provided with sawtooth-shaped water diversion sheets, and the circular edges of the drum discs in the other rotating wheels except the rotating wheel at the top layer are uniformly provided with a plurality of drainage holes; the water diversion sheet is arranged along the inner surface of the lower part of the circular rotating wheel shell, and the sawteeth of the water diversion sheet are arranged downwards in an inclined way and extend out of the rotating wheel shell; arc tile-shaped sub-blades are obliquely arranged in the drainage holes, the sub-blades are obliquely arranged towards the rotating direction of the rotating wheel, the upper parts of the sub-blades extend out of the drainage holes, and arc openings of the sub-blades are opposite to the rotating direction of the rotating wheel; the water diversion sheet of the upper runner is opposite to the sub-blade of the adjacent lower runner, and the bottom of the shell of the upper runner is flush with or lower than the top of the waterproof ring of the lower runner; each layer of rotating wheel is provided with a plurality of nozzles opposite to the bent pipes in the layer of rotating wheel; high-pressure jet flow is sprayed to the elbow through the nozzle to drive the plurality of rotating wheels to rotate on the rotating wheel shaft, so that the plurality of belt pulleys and the rotating shaft are driven to rotate, and the generator is driven to generate electricity.

The rotating wheels are sequentially and movably connected with the rotating wheel shaft through bearings along the axial direction of the rotating wheel shaft, the belt pulleys are sequentially and fixedly sleeved along the axial direction of the rotating shaft, and the upper end and the lower end of the rotating shaft can be respectively connected with the generator. The water diversion sheet is in a band saw shape, the sawtooth part of the water diversion sheet is arranged below the rotating wheel shell, and the sawtooth is slightly curled inwards. After the water flow is discharged from the lower end of the elbow, a small amount of energy flows through the water diversion sheet, under the combined action of the gravity of the water and the centrifugal force generated when the runner rotates, the water is discharged downwards in an inclined mode in front of the rotating direction of the runner, the water impacts the sub-blades on the next runner again, the work is repeated for the second time, the water impacting the sub-blades flows to the water diversion sheet from the drainage holes of the inner drum disc and meets the water flowing out from the water outlet section of the elbow after impacting the runner to do work through other nozzles, and under the combined action of the gravity of the water and the centrifugal force generated when the runner rotates, the water flows through the water diversion sheet and is ejected downwards in an inclined mode in front of the rotating direction of the runner to the sub-blades of. The water diversion sheet of the last runner is right opposite to the sub-blade of the next runner, the bent pipe is connected with the outer side of the inner drum disc, the sub-blade is arranged on the edge of the plane of the inner drum disc to form two inner and outer circular rings, the structure enables the nozzle impact of the runner and the water diversion sheet water diversion impact to be separated, the two circular rings do not interfere with each other, the energy of water flow is effectively utilized, and the power generation efficiency is improved.

Furthermore, the saw teeth of the water diversion sheet are in the shape of oblique teeth, and the water flow guided out by the water diversion sheet can be dead against the sub-blades on the lower runner through the design of the oblique teeth-shaped saw teeth, so that the consumption of the water diversion energy by the water diversion sheet is reduced, the water flow energy guided out by the water diversion sheet is higher, and the generated energy is improved.

Furthermore, the angle between the sub-blades and the vertical direction is 40-60 degrees. Through the setting of this angle, can be better use with the sawtooth of leading water piece mutually supporting, improved the generated energy.

Furthermore, the lower surface of the inner drum disc is also provided with a water diversion ring which is in a horn shape with a small upper part and a big lower part, the upper end of the water diversion ring is fixedly arranged at the inner side of the plurality of drainage holes on the inner drum disc, and the lower end of the water diversion ring is adjacent to the upper part of the water diversion sheet. The water impacting the sub-blades flows through the water diversion ring from the drainage holes of the inner drum disc, then flows to the water diversion sheet by water diversion circulation and meets with the water flowing out from the water outlet section of the elbow after impacting the runner by other nozzles to do work, and then impacts the sub-blades of the next runner by the water diversion sheet.

Furthermore, a plurality of belt pulleys are respectively connected with the rotating wheels on the same horizontal plane through belts. The diameters of the belt pulleys are the same, the diameters of the rotating wheels are sequentially increased from top to bottom, and the belt pulleys are respectively connected with the rotating wheels on the same horizontal plane through belts. The rotating speed of the rotating wheel is gradually decreased downwards in sequence in this way, and the impact force of the water flow led out by the water guide sheet doing work repeatedly can be better exerted by the design.

Furthermore, the nozzles of the rotating wheels are symmetrically distributed on the left side and the right side, so that the stress of the rotating wheels is more uniform. 15-20 nozzles can be arranged on the rotating wheel at the top of the reservoir with low water head and large flow, and the number of the nozzles used by the rotating wheels at the lower layers is gradually reduced by 10 percent of the number of the nozzles of the rotating wheel at the top layer step by step. The efficiency of turbine and nozzle quantity are the proportional relation under certain operating mode, and nozzle quantity increases, can improve work efficiency greatly, and the service data show to adopt the utility model discloses a tower turbine generating efficiency is 1.3-1.5 times of current turbine efficiency.

Further, this bent pipe type multinozzle hydraulic turbine still includes diversion channel and water drainage tank, and the diversion channel passes through the leading water pipe to be connected with the nozzle, and the water drainage tank setting is in order to discharge the rivers that pass through the hydraulic turbine in the below of bottom runner.

Further, the number of the rotating wheels is four. The number of the second runner nozzles from top to bottom is 90% of the number of the first runner nozzles, the number of the third runner nozzles is 80% of the number of the first runner nozzles, the number of the fourth runner nozzles is 70% of the number of the first runner nozzles, and the number of the nozzles is gradually decreased downwards in sequence. The water sprayed out of the first three runner nozzles has different repeated impact opportunities of three times, two times and one time, the water is discharged from the drainage tank after the last runner works, and the whole work is finished.

Further, the water turbine is also provided with a housing. The whole water turbine can be effectively protected from external interference through the arrangement of the shell.

The utility model discloses a size of hydraulic turbine accessible adjusting pulley need not the speed regulator just can reach runner rotational speed and generator assorted purpose. The purpose of matching the rotating speed of the rotating wheel with the generator can be achieved by switching on and off the number of the nozzles. Simple structure, convenient adjustment and convenient use.

The utility model discloses a theory of operation:

the utility model discloses a bent pipe type multi-nozzle water turbine is when operating condition, water is from nozzle spun high-pressure jet directly to hit return bend water outlet section upper segment, carry out energy conversion for the first time after, there is a small part of energy in addition, rivers are from return bend lower extreme discharge water diversion piece of flowing through, under the power that the dead weight of water produced and the centrifugal force combined action when the runner rotates, water jets out to the place ahead oblique of runner rotation direction, strike next runner once more, carry out the repeated work of second time, analogize in proper order, the water that the different runner nozzles in upper portion jetted out all has the unequal repeated chance of strikeing of number of times. The number of the nozzles on the rotating wheels is gradually decreased by 10 percent of the number of the nozzles on the rotating wheels at the top layer from top to bottom, and the working efficiency of each rotating wheel has almost the same difference by combining the different repeated impact opportunities of water.

The elbow type multi-nozzle water turbine is characterized in that a plurality of water guide pipes are independently connected with a plurality of nozzles, so that stable water pressure can be guaranteed, high-pressure jet flow sprayed from the nozzles directly strikes a roller at the upper end of a water outlet section of an elbow, a runner rotates forwards by an angle, the high-pressure jet flow enters the roller directly strikes an adjacent elbow from a water inlet of a water inlet section of the adjacent elbow, the runner rotates forwards by an angle, and the runner rotates forwards by an angle so as to analogize, and the runner continuously rotates forwards to drive a generator to. The high-pressure jet ejected from the same nozzle can only hit one bent pipe or the position between two bent pipes, and the design has concentrated high-pressure shooting and strong impact force. A plurality of nozzles of same runner installation do not influence each other, and a plurality of runners of same runner shaft installation, runner quantity have increased nozzle quantity and have multiplied the increase, the utility model discloses a water turbine is unique to exquisite, and the rivers majority of four runners are strikeed in the design all have cubic, secondary, the unequal chance of repeated impact acting once.

Compared with the prior art, the utility model discloses an effect lies in:

1. the utility model discloses a runner and hydraulic turbine simple structure, complete machine area is little, and adaptability is strong, all can be suitable for to the flood peak more than 10 m.

2. The assumption that the current vertical impulse turbine does not use a plurality of rotating wheels on the same shaft and 15-20 nozzles on the same rotating wheel simultaneously is realized.

3. Other products only have double-click type and can do impact work for the first time and then do impact work for the second time. Most water flows of the bent pipe type multi-nozzle water turbine can do repeated impact work with different times.

4. Through the effective combination of the unequal repeated impact acting many times of a nozzle leading water pipe, multinozzle, bull wheel, the utility model discloses a hydraulic turbine efficiency improves at double, and to the large-traffic reservoir of low head, this bent pipe formula multinozzle hydraulic turbine's beneficial effect more can embody very much. Compared with other water turbines, the efficiency is obviously and greatly improved under the conditions of the same water head and the same water consumption.

Drawings

The contents of the description and the references in the drawings are briefly described as follows:

FIG. 1 is a schematic structural view of a bent pipe;

FIG. 2 is a perspective view of a wheel according to an embodiment;

FIG. 3 is a perspective view of a second turbine according to an embodiment;

FIG. 4 is a schematic structural view of a second hydraulic turbine according to an embodiment;

FIG. 5 is a schematic view showing the structure of a second or third layer rotor according to the second embodiment;

FIG. 6 is a top view of FIG. 5;

FIG. 7 is a schematic view showing the structure in which the second and third layer rotors cooperate with each other in the second embodiment;

in the figure: the water drainage device comprises a rotating wheel 1, a rotating wheel shell 2, an inner drum 3, a bent pipe 4, a water inlet section 41, a water outlet section 42, a roller 43, a waterproof ring 5, a waterproof strip 6, a rotating wheel shaft 7, a rotating shaft 8, a belt pulley 9, a belt 10, a water guide pipe 11, a nozzle 12, a generator 13, a water guide sheet 14, a drainage hole 15, a sub-blade 16, a water guide groove 17 and a drainage groove 18.

Detailed Description

The invention will be further elucidated with reference to the following non-limiting embodiment in which the drawing is combined. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

Example one

As shown in fig. 1 and 2, the elbow type runner 1 includes a circular runner casing 2, a circular inner drum 3 with a shaft hole and sleeved in the runner casing 2, and a plurality of elbows 4; the rotating wheel shell 2 is coaxial with the inner drum 3; the elbow 4 comprises a water inlet section 41 and a water outlet section 42; as shown in fig. 2 and 4, the plurality of bent pipes 4 are uniformly fixed between the runner housing 2 and the inner drum 3 at the same angle with the vertical direction, water inlets of water inlet sections 41 of the plurality of bent pipes 4 are arranged in the same direction along a circular line where the plurality of bent pipes 4 are located, the water inlet sections 41 of the bent pipes 4 are arranged above the water outlet section 42, and the water inlet sections 41 and the water outlet section 42 of the bent pipes 4 are arranged in an inclined direction. The elbow 4 is arranged in the runner 1, the nozzle 12 matched with the runner 1 is opposite to the water inlet of the water inlet section 41, and high-pressure jet flow sprayed from the nozzle 12 is sprayed to the upper end of the water outlet section 42 of the elbow 4 through the water inlet section 41 to enable the runner 1 to rotate, so that the water turbine is driven to do work. The water inlet section 41 of the elbow 4 forms an included angle of 60-70 degrees with the vertical direction. The water inlet section 41 and the water outlet section 42 of the elbow 4 form an included angle of 80-90 degrees. The corner of the elbow 4 is arranged in a round angle; a plurality of rollers 43 are arranged at the corners of the elbow 4, and the rollers 43 are arranged on the inner walls of the outer corners of the corners and are opposite to the water inlet of the water inlet section 41. The upper edge of the water inlet section 41 of the elbow 4 is higher than the inner drum 3. The upper end of the runner shell 2 is provided with a waterproof ring 5 extending upwards, and the upper edge of the waterproof ring 5 is higher than the water inlet of the water inlet section 41 of the elbow 4. A plurality of waterproof strips 6 for preventing water flow from sputtering are arranged on the inner wall of the waterproof ring 5. Through the cooperation of the waterproof strip 6 and the waterproof ring 5, water is prevented from splashing outwards under the action of centrifugal force.

When the rotating wheel is used, the rotating wheel 1 is arranged on the rotating wheel shaft 7 through the inner drum disc 3, water drained through the drainage tube forms high-pressure jet after passing through the nozzle 12, and the high-pressure jet jets into the bent pipe 4 of the rotating wheel 1, so that the rotating wheel 1 rotates. The elbow 4 of the embodiment adopts the round-corner elbow 4, and the corner of the elbow 4 is provided with the roller 43, so that the damage of the high-pressure jet to the elbow 4 for a long time is reduced. The angles of the water inlet section 41 and the water outlet section 42 of the elbow 4 are shown in fig. 1, and can be adjusted according to actual conditions, and the adjusted water outlet section 42 of the elbow 4 is convenient for water flow to be directly discharged from the water outlet section 42, so that the water flow is prevented from being reflected again at the water outlet section 42 to lose water flow energy. The height of the water inlet section 41 and the included angle between the water inlet section 41 and the vertical direction can be adjusted according to actual conditions, so that the direction of high-pressure jet flow sprayed by the nozzle 12 is matched, the high-pressure jet flow can be directly sprayed to the upper end of the water outlet section 42, the energy loss is reduced, and the rotating wheel 1 can work to the maximum extent.

Example two

As shown in fig. 3 and 4, the bent-tube multi-nozzle 12 water turbine includes four runners 1 of the first embodiment, a fixedly-arranged runner shaft 7, a rotating shaft 8, a belt pulley 9, a belt 10, a plurality of nozzles 12 connected to a plurality of water conduits 11, and two generators 13; the drum disc 3 in the rotating wheel 1 is movably sleeved on the rotating wheel shaft 7 through a bearing; the rotating shaft 8 and the rotating wheel shaft 7 are vertically arranged in parallel, the belt pulley 9 is fixedly sleeved on the rotating shaft 8, the belt pulley 9 is connected with the rotating wheel shell 2 through a belt 10, and the number of the belt pulleys 9 is the same as that of the rotating wheels 1; two ends of the rotating shaft 8 are respectively connected with an input shaft of a generator 13 through a belt 10; the nozzle 12 is arranged above the elbow 4 of each runner 1 and is opposite to the water inlet of the water inlet section 41 of the elbow 4, and the high-pressure jet flow jetted by the nozzle is parallel to the water inlet section 41 of the elbow 4.

As shown in fig. 3, the four rotating wheels 1 arranged on the rotating wheel shaft 7 gradually increase in diameter layer by layer from top to bottom to form a tower; the bottoms of the three upper rotating wheels 1 are provided with sawtooth-shaped water diversion sheets 14, and the circular edges of the drum discs 3 in the three lower rotating wheels 1 are uniformly provided with a plurality of drainage holes 15; as shown in fig. 5 and 7, the water diversion sheet 14 is arranged along the inner surface of the lower part of the circular wheel shell 2, and the saw teeth of the water diversion sheet are arranged downwards and obliquely and extend out of the wheel shell 2; as shown in fig. 5, 6 and 7, the circular arc tile-shaped sub-blade 16 is obliquely arranged in the flow guide hole 15, the sub-blade 16 is obliquely arranged towards the rotating direction of the runner 1, the upper part of the sub-blade extends out of the flow guide hole 15, and the arc opening of the sub-blade 16 is opposite to the rotating direction of the runner 1; as shown in fig. 7, the water diversion sheet 14 of the upper runner 1 is opposite to the sub-blade 16 of the adjacent lower runner 1, as shown in fig. 3 and 4, the bottom of the runner shell 2 of the upper runner 1 is flush with the top of the waterproof ring 5 of the lower runner 1; each layer of rotating wheel 1 is provided with a plurality of nozzles 12 opposite to the bent pipes 4 in the layer of rotating wheel 1; high-pressure jet flow is sprayed to the elbow 4 through the nozzle 12 to drive the four rotating wheels 1 to rotate on the rotating wheel shaft 7, so that the four belt pulleys 9 and the rotating shaft 8 are driven to rotate, and the generator 13 is driven to generate electricity.

As shown in fig. 5 and 7, the teeth of the water-diverting sheet 14 are in the form of oblique teeth. The sub-blades 16 form an included angle of 40-60 degrees with the vertical direction. As shown in fig. 3 and 4, four pulleys 9 are connected to the pulley 1 on the same horizontal plane by belts 10. The nozzles 12 of the rotating wheels 1 are symmetrically distributed on the left side and the right side. As shown in fig. 3 and 4, the bent pipe type multi-nozzle 12 water turbine further includes a water guide groove 17 and a water discharge groove 18, the water guide groove 17 is connected with the nozzle 12 through the water guide pipe 11, and the water discharge groove 18 is disposed below the bottom runner 1 to discharge the water flow passing through the water turbine.

The number of the first runner 1 nozzles 12 of the water turbine is 20, the number of the second runner 1 nozzles 12 is 18, the number of the third runner 1 nozzles 12 is 16, the number of the fourth runner 1 nozzles 12 is 14, and the number of the nozzles 12 is gradually decreased from top to bottom. The water sprayed by the nozzles 12 of the first three rotating wheels 1 has unequal repeated impact opportunities of three times, two times and one time, the water is discharged from the drainage groove 18 after the last rotating wheel 1 finishes working, and the whole working is finished.

In the water turbine of this embodiment, as shown in fig. 3, a water flow first connects the nozzle 12 and the gutter 17 through the water conduit 11. All the nozzles 12 are opened, the nozzles 12 on each layer of runner 1 drive different runners 1 to rotate through high-pressure jet flow, water discharged by the top layer of runner 1 through the high-pressure jet flow is discharged through the water outlet section 42, under the action of the self weight of the water and the centrifugal force of the runner 1, the water flow directly shoots on the sub-blades 16 of the lower layer of runner 1 along the sawteeth of the water guide sheet 14, so that impact is formed on the sub-blades 16, the water flow of the top layer of runner 1 respectively completes three times of impact through the three runners 1 below, and the energy of the water flow can be fully utilized. As shown in fig. 7, which is a perspective view of the second layer and the third layer of runner 1, the water diversion sheet 14 of the second layer is opposite to the sub-blade 16 of the third layer of runner 1, a gap is formed between the runner casing 2 of the second layer of runner 1 and the waterproof ring 5 of the third layer of runner 1 for placing the nozzle 12, and all other adjacent runners 1 are arranged in this way. As shown in fig. 7, the third layer of runner 1 is not only impacted by the high-pressure jet of the nozzle 12, but also guided by the water-guiding sheet 14 of the second layer of runner 1, so that the water flowing out of the first layer of runner 1 and the second layer of runner 1 flows through the water-guiding sheet 14 and is emitted to the sub-blades 16 of the third layer of runner 1, the dotted arrow in the figure is the direction of the water flow led out by the water-guiding sheet 14, the top annular arrow is the rotation direction of the runner 1, and so on. The elbow 4 is connected with the outer side of the inner drum 3, the sub-blades 16 are arranged on the edge of the plane of the inner drum 3 to form an inner circular ring and an outer circular ring, the structure enables the nozzle 12 of the runner 1 to impact and the water diversion sheet 14 to divert water to impact separately and not to interfere with each other, the energy of water flow is effectively utilized, and the power generation efficiency is improved.

The utility model discloses a hydraulic turbine accessible adjusting pulley 9's size need not the speed regulator just can reach runner 1 rotational speed and generator 13 assorted mesh. The number of the nozzles 12 can be switched on and off to match the rotating speed of the runner 1 with the generator 13. The utility model discloses a hydraulic turbine application scope is wide, simple structure, and the adjustment is convenient, and convenient to use has improved the generated energy greatly.

The above examples are to be understood as merely illustrative of the present invention and not as limiting the scope of the invention. After reading the description of the present invention, the skilled person can make various changes or modifications to the present invention, and these equivalent changes and modifications also fall within the scope of the present invention defined by the claims.

Claims

1. The elbow-type runner is characterized in that it comprises an annular runner casing, a circular inner drum set with a shaft hole in the runner casing and several elbows; the runner casing and the inner The drum plate is coaxial; the elbow pipe includes a water inlet section and a water outlet section; a plurality of the elbow pipes are evenly fixed and arranged between the runner shell and the inner drum plate at the same angle in the vertical direction, and the water inlet sections of the plurality of elbow pipes are uniformly fixed. The water inlets are arranged in the same direction along the loop line where the several elbows are located, the water inlet section of the elbow is arranged above the water outlet section, and the water inlet section and the outlet section of the elbow are arranged obliquely.

2 . The elbow-type runner according to claim 1 , wherein the water inlet section of the elbow is at an angle of 60°-70° with the vertical. 3 .

3 . The elbow-type runner according to claim 1 , wherein an angle of 80°-90° is formed between the water inlet section and the water outlet section of the elbow. 4 .

4. The elbow-type runner according to claim 1, wherein the corners of the elbows are rounded; a plurality of rollers are arranged at the corners of the elbows, and a number of the rollers are arranged outside the corners On the inner wall of the rounded corner and opposite to the water inlet of the water inlet section.

5 . The elbow-type runner according to claim 1 , wherein the upper edge of the water inlet of the elbow water inlet section is higher than the inner drum plate. 6 .

6. Bending tube type multi-nozzle turbine, characterized in that it comprises the runner according to any one of claims 1-5, a fixed runner shaft, a rotating shaft, a pulley, a belt, a plurality of nozzles connected with a plurality of water diversion pipes, and generator; the runner is movably sleeved on the runner shaft through the inner drum plate; the rotation shaft is vertically arranged parallel to the runner shaft, the pulley is fixedly sleeved on the rotation shaft, and the pulley and the runner shell pass through belt connection; the rotating shaft is connected with the input shaft of the generator through the belt; the nozzle is arranged above the elbow and is directly opposite to the water inlet of the water inlet section of the elbow, and the high-pressure jet ejected by the nozzle is connected to the elbow inlet The sections are parallel; the high-pressure jet is sprayed to the elbow through the nozzle to drive the runner to rotate on the runner shaft, thereby driving the pulley and the rotating shaft to rotate, thereby driving the generator to generate electricity.

7. The elbow-type multi-nozzle water turbine according to claim 6, wherein a waterproof ring extending upward is provided at the upper end of the runner casing, and the upper edge of the waterproof ring is higher than the water inlet section of the elbow. water intake.

8 . The elbow-type multi-nozzle water turbine according to claim 7 , wherein there are several runners, all of which are movably sleeved on the runner shaft; the pulleys and the runners have the same number, which are respectively the same as the runners. 9 . The outer diameter of several runners arranged on the runner shaft increases layer by layer from top to bottom to form a tower; except for the bottom runner, the bottom of the other runners are provided with serrated water diversion pieces, except for the top runner. A number of drainage holes are evenly arranged on the circular edge of the inner drum of the other runners; the drainage sheet is arranged along the inner surface of the lower part of the circular runner shell, and its serrations are arranged obliquely downward and extend out of the runner shell; The arc-shaped tile-shaped sub-blade is inclined in the hole, the sub-blade is inclined in the direction of rotation of the runner, and the upper part of the sub-blade protrudes out of the drainage hole, and its arc is opposite to the rotation direction of the runner; the water diversion piece of the upper runner It is directly opposite to the sub-blade of the adjacent lower runner, and the bottom of the runner shell of the upper runner is flush with the top of the waterproof ring of the lower runner or lower than the top of the waterproof ring of the lower runner; each runner is provided with a Several nozzles are opposite to the elbows in this layer of runners; the nozzles spray high-pressure jets to the elbows to drive several runners to rotate on the runner shaft, thereby driving several pulleys and rotating shafts to rotate, thereby driving the generator to generate electricity.

9 . The elbow-type multi-nozzle turbine according to claim 8 , wherein the sub-blade forms an included angle of 40°-60° with the vertical direction. 10 .

10. The elbow-type multi-nozzle water turbine according to claim 8 or 9, wherein the number of said runners is four.