CN217602827U

CN217602827U - Impulse turbine runner

Info

Publication number: CN217602827U
Application number: CN202221736985.0U
Authority: CN
Inventors: 刘小钢; 李胜勇; 程祥平
Original assignee: Yibin Fuyuan Equipment Of Power Generation Co ltd
Current assignee: Yibin Fuyuan Equipment Of Power Generation Co ltd
Priority date: 2022-07-07
Filing date: 2022-07-07
Publication date: 2022-10-18
Anticipated expiration: 2032-07-07

Abstract

The utility model discloses an impulse turbine runner, which relates to the technical field of impulse turbines and comprises an installation shaft and four impeller blade groups inserted on the installation shaft, wherein the tops of the butt joints of the four impeller blade groups are all covered with reinforced arc plates, and the four reinforced arc plates are fixedly connected with each other; the inner side of the reinforcing arc plate is provided with one-way positioning plates in an equidistant rotating mode, the inner side wall of the reinforcing arc plate is provided with movable cavities in an equidistant mode, the rotating direction of the one-way positioning plates is opposite to the rotating direction of the four impeller blade groups, and the rotating shaft of the one-way positioning plate is sleeved with a return torsion spring. In the utility model, the impeller and the mounting shaft are changed into a split type from an integrated type during production, and the impeller is produced in equal parts, so that the difficulty degree of transportation of the large-size integrated turbine runner is reduced; meanwhile, the strength of the joint of the adjacent impeller blade groups is improved through the reinforcing arc plates, the suspension condition of the top of each blade is increased, and the possibility that the root of each blade is stressed and concentrated and is easily broken is reduced.

Description

Impulse turbine runner

Technical Field

The utility model relates to an impulse turbine technical field especially relates to impulse turbine runner.

Background

The impulse turbine is a hydraulic prime mover which leads out free jet with kinetic energy by means of a special water guide mechanism, and the free jet impacts a runner bucket to enable a runner to rotate to do work, so that hydraulic energy is converted into mechanical energy. The water turbine runner is one of four important flow passage components of the water turbine and is an important component for the water turbine to do work.

And when runner design size exceeded national road transportation width, can't directly transport whole impact runner to the installation of power station, the blade of runner needs the huge impact of constantly receiving water when using simultaneously, and the root atress of blade is concentrated and is broken easily.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects of the prior art and providing the impulse turbine runner.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the impulse turbine runner comprises an installation shaft and four impeller blade groups inserted on the installation shaft, wherein the tops of the abutting joints of the four impeller blade groups are covered with reinforcing arc plates, and the four reinforcing arc plates are fixedly connected with each other;

impeller blade group specifically comprises a plurality of blades, the blade top is equipped with the depressed part, it rotates to be equipped with the one-way locating plate with the blade depressed part joint to strengthen the inboard equidistance of arc board, strengthen the activity chamber of equidistance offered with one-way locating plate block in the arc board inside wall, the turning to of one-way locating plate turns to opposite with four impeller blade groups, all overlap in the pivot of one-way locating plate and be equipped with the return torsional spring.

Further, every strengthen the both ends of arc board and all be equipped with the flange board, it is adjacent strengthen the mutual butt joint of flange board of arc board, two flange board top dustcoat is equipped with the connecting cover, the connecting cover is through a plurality of locking bolt and two flange board rigid couplings.

Further, every the equal equidistance of impeller piece group inboard is equipped with a plurality of positioning convex block, set up on the installation axle lateral wall with a plurality of positioning convex block complex positioning groove.

Compared with the prior art, the utility model discloses possess following beneficial effect:

in the utility model, the impeller and the mounting shaft are changed from an integrated type into a split type during production, and the impeller is produced in equal parts, thereby reducing the difficulty degree of transportation of the large-size integrated water turbine runner; meanwhile, the strength of the joint of the adjacent impeller blade groups is improved through the reinforcing arc plates, the suspension condition of the top of each blade is increased, and the possibility that the root of each blade is stressed and concentrated and is easily broken is reduced.

Drawings

Fig. 1 is a schematic view of the overall structure of a runner of an impulse turbine according to the present invention;

fig. 2 is an exploded internal view of the impulse turbine runner according to the present invention;

fig. 3 is the schematic view of the internal structure of the reinforced arc plate in the runner of the impulse turbine of the present invention.

Number in the figure: 1. installing a shaft; 2. an impeller blade group; 3. a reinforcing arc plate; 4. a connecting cover; 5. positioning the bump; 6. a one-way positioning plate; 7. a movable cavity; 31. a flange plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-3, the impulse turbine runner includes an installation shaft 1 and four impeller blade groups 2 inserted on the installation shaft 1, the tops of the butt joints of the four impeller blade groups 2 are covered with reinforcing arc plates 3, and the four reinforcing arc plates 3 are fixedly connected with each other; the impeller blade group 2 is specifically composed of a plurality of blades, the tops of the blades are provided with recesses, the inner sides of the reinforcing arc plates 3 are provided with unidirectional positioning plates 6 clamped with the recesses of the blades in an equidistance rotation mode, due to the large size of the runner, the sizes of the reinforcing arc plates 3 are the same, the reinforcing arc plates 3 and the impeller blade group 2 can conveniently rotate synchronously, and meanwhile the reinforcing arc plates 3 can be conveniently installed, the unidirectional positioning plates 6 of the reinforcing arc plates 3 do not need to be aligned to the recesses of the tops of the blades one by one, after the reinforcing arc plates are installed, ring plates formed by the reinforcing arc plates 3 connected together can be rotated, so that the middle parts of the reinforcing arc plates 3 can cover the butt joints of the adjacent impeller blade groups 2, movable cavities 7 clamped with the unidirectional positioning plates 6 are equidistantly formed in the inner side walls of the reinforcing arc plates 3, the rotation direction of the unidirectional positioning plates 6 is opposite to the rotation direction of the four impeller blade groups 2, return torsion springs are sleeved on rotating shafts of the unidirectional positioning plates 6, the impeller and the installation shaft 1 is changed into a split type during production, and the impeller is equally-divided production, and the difficulty degree of transportation of the large-size integrated water turbine runner is reduced; meanwhile, the strength of the joint of the adjacent impeller blade groups 2 is improved through the reinforcing arc plates 3, the suspension condition of the top of each blade is increased, and the possibility that the root of each blade is stressed and concentrated and is easily broken is reduced.

Furthermore, both ends of each reinforcing arc plate 3 are provided with flange plates 31, the strength of the butt joint of the adjacent reinforcing arc plates 3 is enhanced, the flange plates 31 of the adjacent reinforcing arc plates 3 are mutually butted, the top outer covers of the two flange plates 31 are provided with connecting covers 4, and the connecting covers 4 are fixedly connected with the two flange plates 31 through a plurality of locking bolts, so that the flange plates 31 of the adjacent reinforcing arc plates 3 can be conveniently fixed; every impeller piece group 2 inboard equal equidistance is equipped with a plurality of positioning lug 5, set up on the installation axle 1 lateral wall with a plurality of positioning lug 5 complex positioning groove, avoid split type impeller and installation axle 1 to slide relatively, influence the kinetic energy conversion.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The impulse turbine runner is characterized by comprising an installation shaft (1) and four impeller blade groups (2) inserted on the installation shaft (1), wherein the tops of the butted parts of the four impeller blade groups (2) are covered with reinforcing arc plates (3), and the four reinforcing arc plates (3) are fixedly connected with each other;

impeller plate group (2) specifically comprises a plurality of blades, the blade top is equipped with the depressed part, it rotates one-way locating plate (6) that are equipped with the blade depressed part joint to strengthen inboard equidistance of arc board (3), activity chamber (7) with one-way locating plate (6) block are seted up to the equidistance in strengthening arc board (3) inside wall, turning to of one-way locating plate (6) turns to on the contrary with four impeller plate groups (2), all overlap in the pivot of one-way locating plate (6) and be equipped with the return torsional spring.

2. The impulse turbine runner according to claim 1, characterized in that each reinforcing arc plate (3) has flange plates (31) at both ends thereof, the flange plates (31) of adjacent reinforcing arc plates (3) are butted with each other, a connecting cover (4) is provided outside the top of the two flange plates (31), and the connecting cover (4) is fixedly connected with the two flange plates (31) through a plurality of locking bolts.

3. The impulse turbine runner of claim 2, wherein a plurality of positioning protrusions (5) are equidistantly arranged on the inner side of each blade group (2), and a plurality of positioning grooves matched with the positioning protrusions (5) are formed on the outer side wall of the mounting shaft (1).