Novel hydraulic turbine set
By setting ball channels in the bottom ring of the turbine and installing balls to form a bearing structure, the problems of insufficient strength and poor rotation stability of the existing turbine bottom ring are solved, and smoother and more stable rotation and higher structural strength and power generation stability are achieved.
Patent Information
- Application Number
- CN202421413892.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-20
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-06-20
AI Technical Summary
The existing turbine bottom ring lacks its own bearing structure, resulting in the lack of further support and reinforcement of the relative rotation of the vortex wheel and the bottom ring, the structural strength is insufficient, and there is room for optimization of the stability and smoothness of the rotation process.
A cavity is set up in the bottom ring of the turbine, and a plurality of groove rings are added in the cavity to form a ball channel, and a ball is installed to form a bearing structure. The connection between the bearings and the rotors in the bottom ring is achieved by connecting the connecting structures such as channel steel and slots.
Through the design of the ball bearing structure, the direct connection between the turbine vortex wheel and the bottom ring is achieved, and the rotation is assisted under the action of the bearing, sharing the stress, improving the rotation smoothness and stability of the rotor, enhancing the structural strength and power generation stability.
Smart Images
Figure CN222668293U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hydroelectric power generation equipment, in particular to a novel water turbine unit. Background Art
[0002] A water turbine is a power mechanical device that converts the energy generated by the flow of water into mechanical energy generated by rotation. It can convert mechanical energy into electrical energy. It belongs to turbine machinery among fluid machinery and is one of the core power generation equipment in modern hydropower generation systems. Hydropower generation has occupied an important position in the energy system. In the structural composition of the water turbine, the bottom ring is a key component, which has the functions of stabilizing the rotor and reducing eddy current losses.
[0003] Most of the existing turbine bottom rings do not have their own bearing structure. The relative rotation between the vortex runner and the bottom ring lacks further support and reinforcement. The structural strength is slightly insufficient, and the stability and smoothness of the rotation process still have room for improvement.
[0004] In order to solve the above problems, we have made improvements and proposed a new type of water turbine unit. Utility Model Content
[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:
[0006] The utility model provides a novel water turbine unit, comprising a bottom ring, a base ring is fixedly welded on the outer surface of the bottom ring, fixed guide vanes are fixedly welded around the top surface of the base ring at equal intervals, a top seat ring is arranged above the base ring, the tops of the fixed guide vanes are fixedly welded to the bottom surface of the top seat ring, a basic ring is fixedly welded on the bottom surface of the bottom ring, the basic ring is close to the inner edge of the bottom ring, movable guide vane bearing holes are opened on the top surface of the bottom ring, the movable guide vane bearing holes are arranged around the bottom ring at equal intervals, a limiting cavity is opened on the inner surface of the bottom ring, and a ball is arranged inside the limiting cavity.
[0007] As a preferred technical solution of the utility model, a connecting square tube is provided on the inner side of the limiting cavity. The connecting square tube is annular, and its half close to the outer side extends into the limiting cavity. The inner surface of the connecting square tube is fixedly installed with a turbine runner.
[0008] As a preferred technical solution of the utility model, an upper groove ring is fixedly welded on the top of the inner wall of the limiting cavity close to the outer side of the bottom ring, and an arc groove is opened on the inner bottom surface of the upper groove ring; a lower groove ring is fixedly welded on the bottom of the inner wall of the limiting cavity close to the outer side of the bottom ring, and an arc groove is opened on the inner top of the lower groove ring.
[0009] As a preferred technical solution of the utility model, a connecting groove ring is fixedly welded to the inner middle part of the limiting cavity, an arc groove is opened on the outer surface of the connecting groove ring, slots are opened around the inner middle part of the connecting groove ring at equal intervals, and an oil seal ring is fixedly installed on the top between the upper groove ring and the connecting groove ring.
[0010] As a preferred technical solution of the utility model, the balls are arranged around the connecting square tube, the balls are located between the connecting groove ring, the upper groove ring and the lower groove ring, and are connected to the connecting groove ring, the upper groove ring and the lower groove ring, and a ball limit frame is installed on the surface of the balls, and the balls are kept at equal spacing through the ball limit frame.
[0011] As a preferred technical solution of the utility model, a connecting channel steel is fixedly welded on the middle part of the outer surface of the connecting square tube, the connecting channel steel is fixedly spliced with the connecting groove ring, and the connecting square tube is slidably connected with the bottom ring through a ball.
[0012] The beneficial effects of the utility model are as follows: the novel water turbine unit, by arranging a cavity in the bottom ring, adding a plurality of groove rings in the cavity, cooperating with each other to form a ball channel, installing a group of balls in the channel to form a bearing structure, and realizing the connection between the bearing in the bottom ring and the runner by connecting the channel steel and the slot and other connecting structures, so that the vortex runner of the water turbine can be directly connected with the bottom ring, and assisted in rotation under the action of the bearing, so as to realize the sharing of the force on the runner, and the bottom ring is no longer just a limiting function, and can make the rotation of the runner smoother and more stable, thereby improving the structural strength and power generation stability. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:
[0014] Figure 1 It is a structural schematic diagram of a novel water turbine unit of the utility model;
[0015] Figure 2 It is a schematic diagram of a partial cross-sectional structure of a novel water turbine unit in a top view of the utility model;
[0016] Figure 3 It is a schematic diagram of a partial cross-section of the structure of a new type of water turbine unit of the utility model;
[0017] Figure 4 It is a schematic diagram of a partial cross-sectional structure of a novel water turbine unit in a top view of the utility model;
[0018] In the figure: 1. bottom ring; 2. base ring; 3. top ring; 4. fixed guide vane; 5. foundation ring; 6. movable guide vane bearing hole; 7. limit cavity; 8. connecting square tube; 9. ball; 10. ball limit frame; 11. upper groove ring; 12. lower groove ring; 13. connecting groove ring; 14. oil seal ring; 15. connecting channel steel. DETAILED DESCRIPTION
[0019] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.
[0020] Example: Figure 1-4 As shown, a novel water turbine unit comprises a bottom ring 1, a base ring 2 is fixedly welded on the outer surface of the bottom ring 1, and fixed guide vanes 4 are fixedly welded around the top surface of the base ring 2 at equal intervals, which can guide and bear force on the water flow, a top seat ring 3 is arranged above the base ring 2, and the tops of the fixed guide vanes 4 are fixedly welded to the bottom surface of the top seat ring 3, and a base ring 5 is fixedly welded on the bottom surface of the bottom ring 1, and the top seat ring 3 and the base ring 2 bear the weight of the unit, including the weight of the generator and concrete, and cooperate with the guide vanes to bear the axial water thrust of the turbine, the base ring 5 is close to the inner edge of the bottom ring 1, and movable guide vane bearing holes 6 are opened on the top surface of the bottom ring 1, and the movable guide vane bearing holes 6 are arranged around the bottom ring 1 at equal intervals for installing movable guide vanes that can be controlled to rotate, thereby controlling the water flow, and a limiting cavity 7 is opened on the inner surface of the bottom ring 1, and a ball 9 is arranged inside the limiting cavity 7, and the ball 9 is used to form a bearing structure.
[0021] A connecting square tube 8 is provided on the inner side of the limiting cavity 7. The connecting square tube 8 is annular, and its half close to the outer side extends into the limiting cavity 7. A turbine runner is fixedly installed on the inner surface of the connecting square tube 8 to connect the runner to the bottom ring 1.
[0022] An upper groove ring 11 is fixedly welded on the top of one side of the inner wall of the limiting cavity 7 close to the outer side of the bottom ring 1, and an arc groove is opened on the inner bottom surface of the upper groove ring 11; a lower groove ring 12 is fixedly welded on the bottom of one side of the inner wall of the limiting cavity 7 close to the outer side of the bottom ring 1, and an arc groove is opened on the inner top of the lower groove ring 12; a connecting groove ring 13 is fixedly welded on the middle part of the inner part of the limiting cavity 7, and an arc groove is opened on the outer surface of the connecting groove ring 13, and slots are opened around the middle part of the inner side of the connecting groove ring 13 at equal intervals; the upper groove ring 11, the lower groove ring 12 and the arc groove of the connecting groove ring 13 together constitute a rolling channel for the ball 9, and an oil seal ring 14 is fixedly installed on the top between the upper groove ring 11 and the connecting groove ring 13.
[0023] The balls 9 are arranged around the connecting square tube 8. The balls 9 are located between the connecting groove ring 13, the upper groove ring 11 and the lower groove ring 12, and are connected to the connecting groove ring 13, the upper groove ring 11 and the lower groove ring 12. A ball limit frame 10 is installed on the surface of the balls 9. The balls 9 are kept at equal intervals by the ball limit frame 10. The balls 9 roll in the rolling channel in turn at equal intervals to form a bearing structure.
[0024] A connecting channel steel 15 is fixedly welded to the middle of the outer surface of the connecting square tube 8, and the connecting channel steel 15 is fixedly spliced with the connecting groove ring 13. The connecting square tube 8 is slidingly connected to the bottom ring 1 through the ball 9, so that the vortex impeller connected to the connecting square tube 8 can rotate more smoothly and stably.
[0025] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A novel water turbine unit, comprising a bottom ring (1), characterized in that: A base ring (2) is fixedly welded on the outer surface of the bottom ring (1), fixed guide vanes (4) are fixedly welded around the top surface of the base ring (2) at equal intervals, a top seat ring (3) is arranged above the base ring (2), the tops of the fixed guide vanes (4) are fixedly welded to the bottom surface of the top seat ring (3), a base ring (5) is fixedly welded on the bottom surface of the bottom ring (1), the base ring (5) is close to the inner edge of the bottom ring (1), the top surface of the bottom ring (1) is provided with movable guide vane bearing holes (6), the movable guide vane bearing holes (6) are arranged around the bottom ring (1) at equal intervals, the inner surface of the bottom ring (1) is provided with a limit cavity (7), and a ball (9) is arranged inside the limit cavity (7).
2. A novel water turbine unit according to claim 1, characterized in that: A connecting square tube (8) is arranged on the inner side of the limiting cavity (7). The connecting square tube (8) is annular, and the half of the connecting square tube (8) close to the outer side extends into the limiting cavity (7). The inner surface of the connecting square tube (8) is fixedly mounted with a turbine runner.
3. A new type of water turbine unit according to claim 2, characterized in that: An upper groove ring (11) is fixedly welded to the top of one side of the inner wall of the limiting cavity (7) close to the outer side of the bottom ring (1), and an arc-shaped groove is provided on the inner bottom surface of the upper groove ring (11). A lower groove ring (12) is fixedly welded to the bottom of one side of the inner wall of the limiting cavity (7) close to the outer side of the bottom ring (1), and an arc-shaped groove is provided on the inner top of the lower groove ring (12).
4. A new type of water turbine unit according to claim 3, characterized in that: A connecting groove ring (13) is fixedly welded to the middle of the inner portion of the limiting cavity (7); an arc groove is provided on the outer surface of the connecting groove ring (13); slots are provided around the inner middle portion of the connecting groove ring (13) at equal intervals; and an oil seal ring (14) is fixedly installed at the top between the upper groove ring (11) and the connecting groove ring (13).
5. A novel water turbine unit according to claim 4, characterized in that: The balls (9) are arranged around the connecting square tube (8), the balls (9) are located between the connecting groove ring (13), the upper groove ring (11) and the lower groove ring (12), and are connected to the connecting groove ring (13), the upper groove ring (11) and the lower groove ring (12), and a ball limiting frame (10) is installed on the surface of the balls (9), and the balls (9) are kept at equal distances through the ball limiting frame (10).
6. A novel water turbine unit according to claim 5, characterized in that: A connecting channel steel (15) is fixedly welded to the middle of the outer surface of the connecting square tube (8), the connecting channel steel (15) is fixedly spliced with the connecting groove ring (13), and the connecting square tube (8) is slidably connected to the bottom ring (1) via a ball bearing (9).