Novel hydraulic turbine set rotating wheel

Abstract

The utility model discloses a novel hydraulic turbine set runner, which particularly relates to the field of hydraulic turbines, and comprises a runner main body, a runner cone is arranged at the bottom end of the runner main body, a main shaft is vertically arranged in the middle of the inner bottom end of the runner cone, a transverse shaft is horizontally arranged between the inner side walls of the runner cone, and the transverse shaft is connected with the main shaft; insertion rods are symmetrically arranged on the top face of the transverse shaft and located at the two ends of the main shaft, a fixing rod is arranged on the rotating wheel body, and the fixing rod penetrates through the multiple insertion rods. Fastening bolts are arranged at the two ends of the fixing rod in a threaded mode. The runner main body is fixed with the main shaft and the inserting rod on the runner cone through the fixing rod, the connecting tightness between the runner main body and the runner cone is enhanced, the runner cone is provided with a plurality of connecting points through the main shaft and the transverse shaft, the fixing rod is horizontally arranged, the two ends of the fixing rod are fixed through the fastening bolts, and the protection frame is arranged outside the fastening bolts. And the fastening bolt can be prevented from falling off, so that the connection tightness between the runner main body and the runner cone is further enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of water turbines, in particular to a novel water turbine runner. Background Art

[0002] A water turbine unit is a generator set driven by a water turbine. A water turbine is a power machine that converts the energy of water flow into rotational mechanical energy. It is usually used in conjunction with a water turbine generator, a speed governor, an excitation system, and power station control equipment to form the main body of a hydroelectric power station. In a hydroelectric power station, water from an upstream reservoir is led to the water turbine through a water diversion pipe, which drives the turbine runner to rotate, driving the generator to generate electricity, and the water that has done work is discharged downstream through the tailwater pipe. Water turbines belong to turbine machinery in fluid machinery. According to the different hydraulic effects of water flow on the runner, they can be divided into two categories: reaction turbines and impulse turbines. Reaction turbines are a type of water turbine, while impulse turbines are another common type. The turbine runner is one of the four important flow-through components of a water turbine and an important component for the work of a water turbine.

[0003] The runner of a water turbine generally consists of a water turbine runner body and a water discharge cone. The runner of an existing authorized patent axial flow water turbine, patent number CN201420835473.9, includes a runner body and a water discharge cone; the water discharge cone is installed at the lower end of the runner body; the lower end of the runner body is provided with a mounting convex ring whose outer diameter matches the aperture of the upper port of the water discharge cone; the upper port of the water discharge cone is sleeved outside the mounting convex ring and the upper port of the water discharge cone and the mounting convex ring are fixedly connected to each other. The runner of the axial flow water turbine can easily install the water discharge cone on the runner body.

[0004] Although the above patent can conveniently install the drain cone and the impeller, the drain cone has a certain weight. Only by the installation method adopted by the above patent, the connection between the drain cone and the impeller is not tight enough, and the drain cone and the impeller are prone to fall off.

[0005] Therefore, we made improvements and proposed a new type of turbine runner. Utility Model Content

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0007] The utility model discloses a novel water turbine runner, comprising a runner body, a water discharge cone is arranged at the bottom end of the runner body, a main shaft is vertically fixedly arranged in the middle part of the inner bottom end of the water discharge cone, a transverse axis is horizontally fixedly arranged between the inner side walls of the water discharge cone, and the transverse axis is fixedly connected to the main shaft; plug rods are symmetrically fixedly arranged on the top surface of the transverse axis and at both ends of the main shaft, a fixing rod is arranged on the runner body, and the fixing rod passes through a plurality of plug rods; fastening bolts are threadedly arranged at both ends of the fixing rod, and protective frames are symmetrically arranged on both sides of the runner body, and the protective frames are located outside the fastening bolts.

[0008] As a preferred technical solution of the utility model, a plug hole is penetrated through the bottom end of the rotating wheel body, the size of the plug hole is larger than the size of the plug rod and the main shaft, and the plug hole corresponds to the plug rod and the main shaft one by one.

[0009] As a preferred technical solution of the utility model, fixing holes are opened on the side of the rotating wheel body, the insertion rod and the main shaft, the fixing rod is arranged through the fixing hole, and the two ends of the fixing rod are respectively located on both sides of the rotating wheel body.

[0010] As a preferred technical solution of the utility model, the protective frame is a U-shaped structure, and a through slot is opened through the middle of the front side of the protective frame. The size of the through slot is larger than the width of the fastening bolt and smaller than the horizontal length of the fastening bolt.

[0011] As a preferred technical solution of the utility model, magnets are symmetrically arranged on one side of the protection frame facing the fastening bolt, the fastening bolt is an iron bolt, and the magnets are adsorbed to the fastening bolt.

[0012] As a preferred technical solution of the utility model, both sides of the rotating wheel body are provided with clamping grooves symmetrically arranged in the upper and lower directions, and the side walls of the clamping grooves are symmetrically provided with arc grooves.

[0013] As a preferred technical solution of the utility model, arc blocks are symmetrically fixed on both sides of both ends of the protective frame, the arc blocks are clamped with the arc grooves, and the arc blocks are made of rubber material; the two ends of the protective frame are clamped with the clamping grooves.

[0014] The beneficial effects of the utility model are:

[0015] In the utility model, the main shaft and the insertion rod on the runner body and the water discharge cone are fixed by a fixing rod, so that the tightness of the connection between the runner body and the water discharge cone can be enhanced. The main shaft is distributed in the middle of the water discharge cone, the transverse axis is distributed between the side walls of the water discharge cone, and the insertion rod is distributed on the transverse axis and located at both ends of the main shaft, so that there are multiple connection points on the water discharge cone, and the fixing rod is horizontally arranged, and its two ends are fixed by fastening bolts. A protective frame is arranged on the outside of the fastening bolts to prevent the fastening bolts from falling off, thereby further enhancing the tightness of the connection between the runner body and the water discharge cone. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] 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:

[0017] Figure 1 This is a schematic diagram of the structure of a new type of water turbine unit runner in which a protective frame is installed;

[0018] Figure 2 This is a schematic diagram of the structure of a new type of water turbine unit runner in the utility model, in which the protective frame is not installed;

[0019] Figure 3 yes Figure 2 The enlarged view of point A in the middle;

[0020] Figure 4 yes Figure 2 Enlarged view of point B in the middle.

[0021] In the figure: 1. impeller body; 2. drain cone; 3. main shaft; 4. transverse shaft; 5. plug rod; 6. fixing rod; 7. plug hole; 8. fastening bolt; 9. protective frame; 10. through groove; 11. magnet; 12. arc block; 13. arc groove; 14. card slot. DETAILED DESCRIPTION

[0022] 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.

[0023] Example: Figures 1 to 4As shown, the utility model is a novel water turbine runner, including a runner body 1, a drainage cone 2 is arranged at the bottom end of the runner body 1, a main shaft 3 is vertically fixedly arranged in the middle of the inner bottom end of the drainage cone 2, the main shaft 3 extends to the top of the drainage cone 2, a transverse axis 4 is horizontally fixedly arranged between the inner side walls of the drainage cone 2, and the transverse axis 4 is fixedly connected to the main shaft 3; by arranging the main shaft 3 and the transverse axis 4, there are multiple connection points on the drainage cone 2, so that the connection is tighter when the runner body 1 and the drainage cone 2 are connected, and the top surface of the transverse axis 4 and the two ends of the main shaft 3 are symmetrically fixed with plug rods 5, and a fixing rod 6 is arranged on the runner body 1, and the fixing rod 6 passes through the multiple plug rods 5; the fixing rod 6 is connected with the main shaft 3 and the transverse axis 4 by plugging, so as to play a fixing role.

[0024] Both ends of the fixing rod 6 are threadedly provided with fastening bolts 8, and protective frames 9 are symmetrically provided on both sides of the runner body 1, and the protective frames 9 are located outside the fastening bolts 8. The two ends of the fixing rod 6 are fixed by the fastening bolts 8 to prevent the fixing rod 6 from falling off from the runner body 1, and the provided protective frames 9 can also prevent the fastening bolts 8 from loosening and falling off, further enhancing the tightness of the connection between the runner body 1 and the drain cone 2.

[0025] The bottom end of the runner body 1 is penetrated with a plug hole 7, the size of the plug hole 7 is larger than the size of the plug rod 5 and the main shaft 3, and the plug hole 7 corresponds to the plug rod 5 and the main shaft 3. When the drain cone 2 is connected to the runner body 1, the main shaft 3 and the plug rod 5 can be aligned with the plug hole 7 and passed through the plug hole 7.

[0026] The side of the wheel body 1, the insertion rod 5 and the main shaft 3 are all provided with fixing holes, and the fixing rod 6 is arranged through the fixing holes, and the two ends of the fixing rod 6 are respectively located on both sides of the wheel body 1. The fixing rod 6 can limit the main shaft 3 and the insertion rod 5 to a specific position, thereby playing a connecting role.

[0027] The protection frame 9 is a U-shaped structure, and a through slot 10 is provided in the middle of the front of the protection frame 9. The size of the through slot 10 is larger than the width of the fastening bolt 8 and smaller than the horizontal length of the fastening bolt 8. By providing the through slot 10, it is convenient to pass the fastening bolt 8 through the through slot 10 and screw it on the fixing rod 6. The fastening bolt 8 needs to be placed horizontally to pass through the through slot 10. After passing through, the fastening bolt 8 needs to be placed vertically, and the fastening bolt 8 is aligned with the fixing rod 6. The threaded hole on the surface of the fixing rod 6 cooperates with the fastening bolt 8, and the fastening bolt 8 is tightened on the fixing rod 6.

[0028] Magnets 11 are symmetrically arranged on the upper and lower sides of the protective frame 9 facing the fastening bolt 8. The fastening bolt 8 is an iron bolt, and the magnet 11 is adsorbed on the fastening bolt 8. It should be noted that the iron bolt refers to the position on the fastening bolt 8 that is adsorbed on the magnet 11, which is iron, and the rest is made of stainless steel. Stainless steel has the advantages of corrosion resistance, high temperature resistance and oxidation resistance.

[0029] Both sides of the wheel body 1 are symmetrically provided with slots 14, and arc slots 13 are symmetrically provided on the side walls of the slots 14. Arc blocks 12 are symmetrically fixed on both sides of both ends of the protection frame 9, and the arc blocks 12 are engaged with the arc slots 13, and the arc blocks 12 are made of rubber material; the two ends of the protection frame 9 are engaged with the slots 14. Before the fastening bolts 8 are installed, the ends of the protection frame 9 are not completely engaged with the slots 14, such as Figure 2 As shown, it is convenient to operate the fastening bolt 8 with a screwdriver. After the fastening bolt 8 is fixed, the protective frame 9 is pushed so that the two sides of the protective frame 9 move toward the direction of the slot 14. During the movement, the arc block 12 is in a compressed state until the arc block 12 is stuck into the arc slot 13 and the arc block 12 returns to its original state. At this time, the magnet 11 arranged on the protective frame 9 is adsorbed on the surface of the fastening bolt 8, and the protective frame 9 can prevent the fastening bolt 8 from falling off.

[0030] During operation, the main shaft 3 and the insertion rod 5 on the runner body 1 and the drainage cone 2 are fixed by the fixing rod 6, so that the tightness of the connection between the runner body 1 and the drainage cone 2 can be enhanced. The main shaft 3 is distributed in the middle of the drainage cone 2, and the transverse axis 4 is distributed between the side walls of the drainage cone 2. The insertion rod 5 is distributed on the transverse axis 4 and is located at both ends of the main shaft 3, so that there are multiple connection points on the drainage cone 2, and the fixing rod 6 is horizontally arranged, and its two ends are fixed by fastening bolts 8. A protective frame 9 is arranged outside the fastening bolts 8 to prevent the fastening bolts 8 from falling off, thereby further enhancing the tightness of the connection between the runner body 1 and the drainage cone 2.

[0031] 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 runner, comprising a runner body (1), characterized in that: A drainage cone (2) is provided at the bottom end of the wheel body (1), a main shaft (3) is vertically fixedly provided in the middle of the inner bottom end of the drainage cone (2), a transverse axis (4) is horizontally fixedly provided between the inner side walls of the drainage cone (2), and the transverse axis (4) is fixedly connected to the main shaft (3); a plug rod (5) is symmetrically fixedly provided on the top surface of the transverse axis (4) and at both ends of the main shaft (3); a fixing rod (6) is provided on the wheel body (1), and the fixing rod (6) penetrates through a plurality of plug rods (5); fastening bolts (8) are threadedly provided at both ends of the fixing rod (6), and protective frames (9) are symmetrically provided on both sides of the wheel body (1), and the protective frames (9) are located outside the fastening bolts (8).

2. A novel water turbine runner according to claim 1, characterized in that: A plug hole (7) is provided through the bottom end of the rotating wheel body (1); the size of the plug hole (7) is larger than the size of the plug rod (5) and the main shaft (3); and the plug hole (7) corresponds to the plug rod (5) and the main shaft (3) one by one.

3. A novel water turbine runner according to claim 2, characterized in that: The side surface of the rotating wheel body (1) and the insertion rod (5) and the main shaft (3) are all provided with fixing holes, the fixing rod (6) is arranged through the fixing hole, and the two ends of the fixing rod (6) are respectively located on the two sides of the rotating wheel body (1).

4. A novel water turbine runner according to claim 1, characterized in that: The protection frame (9) is a U-shaped structure, and a through slot (10) is provided through the middle of the front side of the protection frame (9). The size of the through slot (10) is larger than the width of the fastening bolt (8) and smaller than the horizontal length of the fastening bolt (8).

5. The novel water turbine runner according to claim 1 is characterized in that: A magnet (11) is symmetrically arranged on one side of the protection frame (9) facing the fastening bolt (8), the fastening bolt (8) is an iron bolt, and the magnet (11) is attracted to the fastening bolt (8).

6. The novel water turbine runner according to claim 1 is characterized in that: Both sides of the rotating wheel body (1) are provided with clamping grooves (14) symmetrically in the upper and lower directions, and the side walls of the clamping grooves (14) are symmetrically provided with arc-shaped grooves (13).

7. A novel water turbine runner according to claim 6, characterized in that: Arc blocks (12) are symmetrically fixedly arranged on both sides of both ends of the protection frame (9), the arc blocks (12) are clamped with the arc grooves (13), and the arc blocks (12) are made of rubber material; the two ends of the protection frame (9) are clamped with the clamping grooves (14).

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