阅读说明：本技术 一种低转动阻力的卧式大型水轮机 (Horizontal large-scale hydraulic turbine of low rolling resistance ) 是由 郑波丹 于 2020-07-08 设计创作，主要内容包括：本发明涉及水轮机技术领域,具体为一种低转动阻力的卧式大型水轮机包括水轮机主体,水轮机主体主要是由外壳、输出主轴、和叶轮组成,外壳的内腔设置为转动内腔,外壳的下端面中间竖直向下设置有出水口,外壳的左侧斜上方设置有进水口,有益效果为：本发明通过设置带有排水槽的轮叶,从而使得水流在叶轮转动时实现在冲压内腔中离心转动,当转动至排水槽时,便于及时的排出,从而使得扇叶自重降低,再次被冲击时不会造成回流冲击,大大提高了能量的转化效率；通过在轮叶上设置挤压槽,利用挤压槽与内支撑杆和外支撑圈的配合,从而对轮叶的外壁的支撑,避免轮叶变形,大大提高了轮叶的强度和使用寿命,同时提高了设备运行的稳定性。(The invention relates to the technical field of water turbines, in particular to a horizontal large-scale water turbine with low rotation resistance, which comprises a water turbine main body, wherein the water turbine main body mainly comprises a shell, an output main shaft and an impeller, the inner cavity of the shell is arranged as a rotation inner cavity, the middle of the lower end surface of the shell is vertically and downwards provided with a water outlet, the left side of the shell is obliquely and upwards provided with a water inlet, and the water turbine has the advantages that: the impeller blade with the drainage groove is arranged, so that water flow centrifugally rotates in the stamping inner cavity when the impeller rotates, and is conveniently and timely discharged when the impeller blade rotates to the drainage groove, so that the dead weight of the impeller blade is reduced, backflow impact cannot be caused when the impeller blade is impacted again, and the energy conversion efficiency is greatly improved; the extrusion grooves are formed in the wheel blades, and the extrusion grooves are matched with the inner supporting rod and the outer supporting ring, so that the outer walls of the wheel blades are supported, the wheel blades are prevented from being deformed, the strength and the service life of the wheel blades are greatly improved, and the running stability of equipment is improved.)

1. The utility model provides a large-scale hydraulic turbine of horizontal of low rolling resistance, includes the hydraulic turbine main part, its characterized in that: the water turbine main body mainly comprises a shell (1), an output main shaft (3) and an impeller (11), wherein an inner cavity of the shell (1) is arranged to be a rotating inner cavity (2), a water outlet (6) is vertically and downwards arranged in the middle of the lower end face of the shell (1), a water inlet (7) is arranged above the left side of the shell (1) in an inclined mode, the output main shaft (3) penetrates through and is inserted into the inner cavity of the rotating inner cavity (2) from front to back, the impeller (11) is fixedly sleeved on the outer wall of the front end of the output main shaft (3), eight installation slots (16) distributed in a circumferential array are arranged on the outer wall of the impeller (11), a stepped groove (17) is formed in the middle of the front end face and the rear end face of the impeller (11), cover plates (10) are symmetrically installed on the front side and the rear side of, wheel leaf (13) are circular-arc recess board, and the circular arc inner chamber of wheel leaf (13) sets up to punching press inner chamber (21), and the circular arc outer wall lower extreme of wheel leaf (13) is provided with arc arch (22), and the one end tip that impeller (11) were kept away from in wheel leaf (13) is provided with second extrusion groove (27), the inner chamber extrusion cover in second extrusion groove (27) has outer support ring (12), one side inner chamber that punching press inner chamber (21) are close to impeller (11) runs through and is provided with water drainage tank (25), and the fixed welding of opposite side of punching press inner chamber (21) has punching press arc board (30), the lower extreme of arc arch (22) is provided with annular first extrusion groove (26), the inner chamber grafting of first extrusion groove (26) has inner support pole (15).

2. A horizontal large water turbine with low rotation resistance according to claim 1, characterized in that: the lower extreme of shell (1) is fixed to be set up on installing support (4), and the upper end of installing support (4) is run through in delivery port (6) of shell (1) lower extreme, both ends symmetry are provided with base (5) about the lower terminal surface of installing support (4).

3. A horizontal large water turbine with low rotation resistance according to claim 1, characterized in that: the water inlet device is characterized in that a water inlet pipe (8) is inserted into an inner cavity at one end of the water inlet (7), the other end of the water inlet (7) is communicated with the rotating inner cavity (2), an electromagnetic control valve (9) is arranged on the outer side of the water inlet pipe (8), and the lower end of the rotating inner cavity (2) is communicated with the water outlet (6).

4. A horizontal large water turbine with low rotation resistance according to claim 1, characterized in that: the impeller is characterized in that an installation inserting strip (24) is arranged at the end part of one end, close to the impeller (11), of the impeller blade (13), the installation inserting strip (24) is inserted into the installation slot (16) in a sliding mode, a gap is reserved between the upper end and the lower end of the installation inserting strip (24) and the upper end face and the lower end face of the impeller (11), and the gap is set to be a limiting slot (20).

5. A horizontal large water turbine with low rotation resistance according to claim 1, characterized in that: the inner cavity of the cover plate (10) is provided with an inner ring (29) which is extruded and sleeved with the stepped groove (17), the outer wall of the lower end of the cover plate (10) is sleeved on the outer wall of the circular arc of the impeller (11), the lower end of the cover plate (10) is provided with limiting insertion strips (28) which are in one-to-one correspondence with the limiting insertion grooves (20), and the limiting insertion strips (28) are fixedly inserted in the limiting insertion grooves (20).

6. A horizontal large water turbine with low rotation resistance according to claim 1, characterized in that: the impeller is characterized in that a plurality of screw holes (23) distributed in a circumferential array mode are formed in the front end face and the rear end face of the impeller (11), locking screws (14) corresponding to the screw holes (23) in a one-to-one mode are vertically inserted into the front end face of the cover plate (10), and the locking screws (14) are rotatably inserted into the screw holes (23) in a threaded mode.

7. A horizontal large water turbine with low rotation resistance according to claim 1, characterized in that: the middle section of the inner support rod (15) is arranged in the first extrusion groove (26) in an extrusion mode, the outer end of the inner support rod (15) is fixedly welded on the inner side arc inner wall of the outer support ring (12), and the other end of the inner support rod (15) is fixedly welded on the arc outer wall of the impeller (11).

8. A horizontal large water turbine with low rotation resistance according to claim 1, characterized in that: the middle of the impeller (11) is provided with a jack (18) in a penetrating mode, the jack (18) is connected to the outer wall of the output spindle (3) in a sleeved mode, an inner cavity of the jack (18) is provided with a pair of fixing slots (19) which are symmetrical up and down, and key position protrusions on the output spindle (3) are fixedly connected in the fixing slots (19) in an inserted mode.

Technical Field

The invention relates to the technical field of water turbines, in particular to a horizontal large-scale water turbine with low rotation resistance.

Background

Modern water turbines are mostly installed in hydropower stations and are used for driving generators to generate electricity. In a hydropower station, water in an upstream reservoir is guided to a water turbine through a water guide pipe to push a water turbine runner to rotate so as to drive a generator to generate electricity. The water after doing work is discharged to the downstream through the tail water pipeline. The higher the water head and the larger the flow, the larger the output power of the water turbine is.

The flabellum rotational resistance of current hydraulic turbine is great, and the main of its resistance is because when the rotational speed is great, rivers impact in the flabellum recess, and because the rotational speed is great, lead to the flabellum unable timely when rotating with rivers discharge, cause the flabellum heavy burden increase to form the resistance, simultaneously along with the impact of rivers, cause the flabellum to warp, thereby reduce the life of flabellum, and cause reverse resistance with the contact of rotation inner wall.

Therefore, the horizontal large-scale water turbine with low rotation resistance is provided to solve the problems of blade deformation and water storage in the blades.

Disclosure of Invention

The invention aims to provide a horizontal large-sized water turbine with low rotation resistance to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a horizontal large-scale hydraulic turbine of low rotation resistance, includes the hydraulic turbine main part, the hydraulic turbine main part mainly comprises shell, output main shaft and impeller, the inner chamber of shell sets up to rotating the inner chamber, and the vertical delivery port that is provided with downwards in the middle of the lower terminal surface of shell, and the oblique top in left side of shell is provided with the water inlet, it has output main shaft to run through the grafting around the inner chamber of rotating the inner chamber, the fixed cover of front end outer wall of output main shaft has connect the impeller, the outer wall of impeller is provided with eight installation slots of circumference array distribution, is provided with the ladder groove in the middle of the terminal surface around the impeller, and the apron is installed to the bilateral symmetry around the impeller, and eight of circumference array distribution the inner chamber of installation slot is all pegged graft and is installed the wheel leaf, the wheel leaf is, the impeller leaf is kept away from the one end tip of impeller and is provided with the second extrusion groove, the inner chamber extrusion cover in second extrusion groove has been connect with outer support ring, one side inner chamber that the punching press inner chamber is close to the impeller runs through and is provided with water drainage tank, and the fixed welding of opposite side of punching press inner chamber has the punching press arc board, the bellied lower extreme of arc is provided with the annular first extrusion groove, the inner chamber in first extrusion groove is pegged graft and is had the inner support pole.

Preferably, the lower end of the shell is fixedly arranged on the mounting support, the water outlet at the lower end of the shell penetrates through the upper end of the mounting support, and the left end and the right end of the lower end face of the mounting support are symmetrically provided with the bases.

Preferably, a water inlet pipe is inserted into an inner cavity at one end of the water inlet, the other end of the water inlet is communicated with the rotating inner cavity, an electromagnetic control valve is arranged on the outer side of the water inlet pipe, and the lower end of the rotating inner cavity is communicated with the water outlet.

Preferably, the end part of one end, close to the impeller, of the impeller blade is provided with an installation inserting strip, the installation inserting strip is inserted into the installation inserting groove in a sliding mode, a gap is reserved between the upper end and the lower end of the installation inserting strip and the upper end and the lower end of the impeller, and the gap is set to be a limiting inserting groove.

Preferably, the inner cavity of the cover plate is provided with an inner ring which is extruded and sleeved with the stepped groove, the outer wall of the lower end of the cover plate is sleeved on the outer wall of the circular arc of the impeller, the lower end of the cover plate is provided with limiting insertion strips which are in one-to-one correspondence with the limiting insertion grooves, and the limiting insertion strips are fixedly inserted in the limiting insertion grooves.

Preferably, the front end face and the rear end face of the impeller are respectively provided with a plurality of screw holes distributed in a circumferential array, the front end face of the cover plate is vertically inserted with locking screws in one-to-one correspondence with the screw holes, and the locking screws are rotatably inserted into the screw holes in a threaded manner.

Preferably, the middle section of the inner support rod is arranged in the first extrusion groove in an extrusion mode, the outer end of the inner support rod is fixedly welded on the inner side arc inner wall of the outer support ring, and the other end of the inner support rod is fixedly welded on the arc outer wall of the impeller.

Preferably, the middle of the impeller is provided with a jack in a penetrating manner, the jack is sleeved on the outer wall of the output main shaft, an inner cavity of the jack is provided with a pair of fixing slots which are symmetrical up and down, and the key position bulges on the output main shaft are fixedly inserted in the fixing slots.

Compared with the prior art, the invention has the beneficial effects that:

1. the impeller blade with the drainage groove is arranged, so that water flow centrifugally rotates in the stamping inner cavity when the impeller rotates, and is conveniently and timely discharged when the impeller blade rotates to the drainage groove, so that the dead weight of the impeller blade is reduced, backflow impact cannot be caused when the impeller blade is impacted again, and the energy conversion efficiency is greatly improved;

2. the invention sets the extrusion groove on the vane, and utilizes the cooperation of the extrusion groove and the inner support bar and the outer support ring, thereby supporting the outer wall of the vane, avoiding the deformation of the vane, greatly improving the strength and the service life of the vane, and simultaneously improving the stability of the operation of the equipment.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a perspective view of the impeller of the present invention;

FIG. 3 is a perspective view of a vane of the present invention;

FIG. 4 is a schematic perspective view of the cover plate of the present invention;

FIG. 5 is a schematic perspective view of the connection between the impeller and the cover plate according to the present invention;

fig. 6 is a schematic perspective view of the connection between the impeller and the vane of the present invention.

In the figure: 1. a housing; 2. rotating the inner cavity; 3. an output spindle; 4. mounting a bracket; 5. a base; 6. a water outlet; 7. a water inlet; 8. a water inlet pipe; 9. an electromagnetic control valve; 10. a cover plate; 11. an impeller; 12. an outer support ring; 13. a blade; 14. locking the screw; 15. an inner support bar; 16. installing a slot; 17. a stepped groove; 18. a jack; 19. fixing the slot; 20. limiting slots; 21. punching an inner cavity; 22. an arc-shaped bulge; 23. screw holes; 24. installing the cutting; 25. a water discharge tank; 26. a first extrusion groove; 27. a second extrusion groove; 28. limiting the cutting; 29. an inner ring; 30. and (5) punching an arc plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 6, the present invention provides a technical solution:

a horizontal large-scale water turbine with low rotation resistance comprises a water turbine main body, wherein the water turbine main body mainly comprises a shell 1, an output main shaft 3 and an impeller 11.

The lower extreme of shell 1 is fixed to be set up on installing support 4, and delivery port 6 of shell 1 lower extreme runs through the upper end of installing support 4, and both ends symmetry are provided with base 5 about the lower terminal surface of installing support 4, utilize the cooperation of installing support 4 and base 5 to realize the fixed mounting of shell 1.

The inner chamber of shell 1 sets up to rotating inner chamber 2, vertically be provided with delivery port 6 downwards in the middle of the lower terminal surface of shell 1, the oblique top in left side of shell 1 is provided with water inlet 7, the one end inner chamber of water inlet 7 is pegged graft and is had inlet tube 8, inner chamber 2 is rotated in the other end intercommunication of water inlet 7, the outside of inlet tube 8 is provided with solenoid electric valve 9, the lower extreme intercommunication delivery port 6 of rotating inner chamber 2 utilizes the cooperation of water inlet 7 and delivery port 6, realize the circulation of circulation rivers, through the rivers of solenoid electric valve 9 control inlet tube 8.

An output main shaft 3 penetrates through and is inserted in the middle of the inner cavity of the rotating inner cavity 2 in a front-back mode, an impeller 11 is fixedly sleeved on the outer wall of the front end of the output main shaft 3 in a sleeved mode, a jack 18 penetrates through the middle of the impeller 11, the jack 18 is sleeved on the outer wall of the output main shaft 3, a pair of fixing slots 19 which are symmetrical up and down are arranged in the inner cavity of the jack 18, key position protrusions on the output main shaft 3 are fixedly inserted in the fixing slots 19 in a sleeved mode, the insertion installation of the impeller 11 and the output main shaft 3 is achieved through the jack 18, and the impeller 11 and the output main.

Eight installation slots 16 distributed in a circumferential array are formed in the outer wall of the impeller 11, the inner cavities of the eight installation slots 16 distributed in the circumferential array are all provided with the impeller blades 13 in an inserted mode, one end portions, close to the impeller 11, of the impeller blades 13 are provided with installation inserting strips 24, the installation inserting strips 24 are inserted into the installation slots 16 in a sliding mode, and the insertion installation between the impeller blades 13 and the impeller 11 is achieved through the matching of the installation slots 16 and the installation inserting strips 24.

The middle of the front end face and the rear end face of the impeller 11 is provided with a stepped groove 17, the front side and the rear side of the impeller 11 are symmetrically provided with cover plates 10, gaps are reserved between the upper ends and the lower ends of the installation cuttings 24 and the upper end face and the lower end face of the impeller 11, the gaps are set to be limiting slots 20, inner cavities of the cover plates 10 are provided with inner rings 29 which are connected with the stepped groove 17 in a squeezing and sleeving mode, the outer walls of the lower ends of the cover plates 10 are connected with the outer walls of arcs of the impeller 11 in a sleeving mode, the lower ends of the cover plates 10 are provided with limiting cuttings 28 which correspond to the limiting slots 20 one by one, the limiting cuttings 28 are fixedly connected in the limiting slots 20 in a plugging mode, the squeezing and fixing of the impeller.

The front end face and the rear end face of the impeller 11 are provided with a plurality of screw holes 23 distributed in a circumferential array mode, the front end face of the cover plate 10 is vertically inserted with locking screws 14 in one-to-one correspondence to the screw holes 23, the locking screws 14 are rotatably inserted into the screw holes 23 in a threaded mode, and the cover plate 10 is fixedly connected with the impeller 11 through the matching of the screw holes 23 and the locking screws 14.

Wheel leaf 13 is circular-arc recess board, the circular arc inner chamber of wheel leaf 13 sets up to punching press inner chamber 21, one side inner chamber that punching press inner chamber 21 is close to impeller 11 runs through and is provided with water drainage tank 25, the fixed welding of opposite side of punching press inner chamber 21 has punching press arc board 30, utilize punching press arc board 30 to bear the impact of rivers, thereby realize the conversion of energy, through setting up water drainage tank 25, thereby make the timely discharge of centrifugal pivoted rivers in the punching press inner chamber 21, thereby reduce the dead weight of wheel leaf 13, reach and reduce the resistance, the purpose of the efficiency of energy conversion is improved.

The lower end of the arc outer wall of the vane 13 is provided with an arc bulge 22, the end part of the vane 13 far away from the vane 11 is provided with a second extrusion groove 27, the inner cavity of the second extrusion groove 27 is extruded and sleeved with an outer support ring 12, the lower end of the arc bulge 22 is provided with a circular first extrusion groove 26, the inner cavity of the first extrusion groove 26 is inserted with an inner support rod 15, the middle section of the inner support rod 15 is extruded and installed in the first extrusion groove 26, the outer end of the inner support rod 15 is fixedly welded on the inner arc inner wall of the outer support ring 12, the other end of the inner support rod 15 is fixedly welded on the arc outer wall of the vane 11, and the first extrusion groove 26 and the second extrusion groove 27 are respectively matched with the inner support rod 15 and the outer support ring 12, therefore, the outer wall of the wheel blade 13 is supported, the wheel blade 13 is prevented from being deformed, the strength of the wheel blade 13 is greatly improved, the service life of the wheel blade is greatly prolonged, and the running stability of equipment is improved.

The working principle is as follows: the method comprises the steps of firstly realizing fixed installation of a shell 1 by matching of a mounting bracket 4 and a base 5, realizing circulation of circulating water flow by matching of a water inlet 7 and a water outlet 6, controlling water flow of a water inlet pipe 8 through an electromagnetic control valve 9, realizing insertion installation of an impeller 11 and an output main shaft 3 through a jack 18, realizing fixed insertion between the impeller 11 and the output main shaft 3 through a fixed slot 19, realizing insertion installation between a vane 13 and the impeller 11 by matching of a mounting slot 16 and a mounting insertion strip 24, realizing extrusion fixation of the vane 13 by matching of a limiting slot 20 and a limiting insertion strip 28, realizing position installation of a cover plate 10 by sleeving the cover plate 10 and a stepped groove 17, and realizing fixed connection of the cover plate 10 and the impeller 11 by matching of a screw hole 23 and a locking screw 14.

Utilize punching press arc 30 to bear the impact of rivers to realize the conversion of energy, through setting up water drainage tank 25, thereby make in the punching press inner chamber 21 in time discharge of centrifugal pivoted rivers, thereby reduce the dead weight of wheel leaf 13, reach the purpose that reduces the resistance, improve energy conversion efficiency.

The first extrusion groove 26 and the second extrusion groove 27 are respectively matched with the inner support rod 15 and the outer support ring 12, so that the outer wall of the vane 13 is supported, the vane 13 is prevented from being deformed, the strength and the service life of the vane 13 are greatly improved, and the running stability of the equipment is improved.

The electromagnetic control valve 9 is a common device for controlling water flow in the operation of the water turbine and is not described in detail.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.