CN219366212U

CN219366212U - Guide vane control mechanism of axial flow water turbine

Info

Publication number: CN219366212U
Application number: CN202320480654.3U
Authority: CN
Inventors: 王立春
Original assignee: Tianjin Kexiang Hydropower Equipment Co ltd
Current assignee: Tianjin Kexiang Hydropower Equipment Co ltd
Priority date: 2023-03-13
Filing date: 2023-03-13
Publication date: 2023-07-18
Anticipated expiration: 2033-03-13

Abstract

The utility model discloses a guide vane control mechanism of an axial flow water turbine, which comprises a bearing plate, wherein a shell is fixedly arranged on the upper end surface of the bearing plate in a centering manner, water inlet grooves are formed in the inner edge surface of the shell in a ring array manner, a first connecting lug and a second connecting lug are respectively arranged on the bottom and the top of the inner wall of the shell in a ring array structure, a rotating shaft is rotatably arranged between the first connecting lug and the second connecting lug in a centering manner, a guide vane body is arranged on the outer edge surface of the rotating shaft in a structure manner, a damping protruding shaft is arranged on the bottom end of the rotating shaft in a centering manner, a damping hole for rotatably arranging the damping protruding shaft is formed in the upper end surface of the first connecting lug in a centering manner, a locking bolt with one end capable of being screwed into the top of the rotating shaft is arranged on the upper end surface of the second connecting lug in a centering manner, and the top of the outer edge surface of the shell is provided with a first connecting end which is connected with the top structure of the outer edge surface of the shell.

Description

Guide vane control mechanism of axial flow water turbine

Technical Field

The utility model belongs to the technical field of axial flow water turbines, and particularly relates to a guide vane control mechanism of an axial flow water turbine.

Background

The axial flow turbine runner consists of a runner body, blades and a water discharge cone, the number of the blades is less than that of mixed flow, and the axis of the blades is perpendicular to the axis of the turbine. The hydraulic power station is suitable for medium-low water head and large-flow hydropower stations. At the same head, the specific rotation speed is higher than that of the mixed-flow water turbine. The application head is about 3 to 80m. The water flow changes from radial to axial flow between the vanes and the wheel, while in the wheel region the water flow remains axially flowing.

When the existing axial-flow water turbine is used, the runner is pushed to rotate by water flow, so that the function of power generation is achieved, the water flow is guided by the guide vanes, the opening and closing distance of the guide vanes is overlarge in a water area with a low water flow speed, and the runner is difficult to be pushed by large thrust when the water flow passes through, so that the opening and closing distance of the guide vanes of the existing axial-flow water turbine cannot be adjusted, and the normal use effect of the existing axial-flow water turbine is affected.

Disclosure of Invention

The utility model aims to provide a guide vane control mechanism of an axial flow water turbine, which aims to solve the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the guide vane control mechanism of the axial flow turbine comprises a bearing plate, wherein the bearing plate is fixedly provided with a shell in the middle of the upper end surface;

the inner edge surface of the shell is provided with a water inlet groove in a ring array, the bottom and the top of the inner wall of the shell are respectively in a ring array structure, a first connecting lug and a second connecting lug are installed, a rotating shaft is installed between the first connecting lug and the second connecting lug in a centering mode, the outer edge surface of the rotating shaft is provided with a guide vane body in a structure, the bottom of the rotating shaft is provided with a damping protruding shaft in a centering mode, the upper end face of the first connecting lug is provided with a damping hole for the rotatable installation of the damping protruding shaft in a centering mode, and the upper end face of the second connecting lug is provided with a locking bolt with one end capable of being screwed into the top of the rotating shaft in a centering mode.

Further, a first connecting end is arranged at the top of the outer edge surface of the shell, and the first connecting end is connected with the top of the outer edge surface of the shell in a structure.

Further, the upper end face of the first connecting end is detachably provided with a second connecting end, the upper end face of the second connecting end is provided with fixing bolts in an annular array, and one end of each fixing bolt can be screwed into the corresponding first connecting end in a threaded mode.

Further, an upper cover body is arranged on the upper end face centering structure of the second connecting end, and a box body is arranged on the upper end face centering structure of the upper cover body.

Further, the top of the outer edge surface of the shell is provided with supporting wing plates in an annular array, one end of each supporting wing plate is connected to the top of the outer edge surface of the shell in a structure, and the other end of each supporting wing plate is used for supporting the bearing plate.

Compared with the prior art, the utility model has the following beneficial effects: thanks to the arrangement of the bearing plate, the shell, the water inlet groove, the first connecting lug, the rotating shaft, the damping protruding shaft, the second connecting lug and the locking bolt, the guide vane body can be stirred, the guide vane body deflects and drives the damping protruding shaft to rotate, resistance can be provided in the deflection process of the guide vane body through the matching of the damping protruding shaft and the damping hole, after the deflection of the guide vane body is completed, one end of the locking bolt can be screwed into the rotating shaft through screwing, the rotating shaft can be fixed, the guide vane body is fixed, the opening and closing interval of the guide vane is adjusted, the guide vane is suitable for different water flow rates, and the practicability is high.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a cross-sectional view of FIG. 1 of the present utility model;

FIG. 3 is an enlarged schematic view of the structure of FIG. 2A in accordance with the present utility model;

fig. 4 is an enlarged schematic view of the structure at B in fig. 2 according to the present utility model.

In the figure: 1. a bearing plate; 2. a housing; 3. a first connecting end; 4. a second connecting end; 5. a fixing bolt; 6. an upper cover; 7. a case body; 8. a support wing plate; 9. a first connecting lug; 10. a rotating shaft; 11. damping protruding shaft; 12. a second connecting lug; 13. locking the bolt.

Detailed Description

The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.

As shown in fig. 1-4, this axial-flow water turbine guide vane control mechanism, including up end fixed mounting has bearing plate 1 of casing 2 placed in the middle, the intake groove has been seted up to the ring array on the internal face of casing 2, and connect ear one 9 and connect ear two 12 are installed to the inner wall bottom and the top of casing 2 respectively to be annular array structure, rotatable installation pivot 10 placed in the middle between connect ear one 9 and the connect ear two 12, the guide vane body is installed to the structure on the outer fringe face of pivot 10, and the bottom of pivot 10 is placed in the middle the structure and is installed damping protruding axle 11, the up end of connect ear one 9 has been offered the damping hole that supplies damping protruding axle 11 rotatable installation, the up end of connect ear two 12 is provided with the locking bolt 13 that one end can screw in pivot 10 top placed in the middle, owing to bearing plate 1, casing 2, the intake groove, connect ear one 9, pivot 10, damping protruding axle 11, connect ear two guide vane bodies and locking bolt 13's setting, the accessible, make the guide vane body deflect, and drive damping protruding axle 11 rotate, can provide the guide vane body in the guide vane body deflection, and the guide vane body through the cooperation of damping protruding axle 11 and damping protruding axle body deflection resistance, can provide the pivot 10 with the opposite directions, can realize the fixed flow, and the practicality is realized to the opposite the guide vane, and the opposite side is realized, and the fixed flow speed is adjusted to the opposite the pivot through the rotation, and the opposite the rotation, the end is realized, and the opposite to the practical to the rotation is realized.

As shown in fig. 1, a first connecting end 3 is arranged at the top of the outer edge surface of the shell 2, the first connecting end 3 is connected with the top structure of the outer edge surface of the shell 2, a second connecting end 4 is detachably arranged on the upper end surface of the first connecting end 3, fixing bolts 5 are arranged on the upper end surface of the second connecting end 4 in an annular array, and one end of each fixing bolt 5 can be screwed into the first connecting end 3.

As shown in fig. 1 and 2, the upper end face centering structure of the second connecting end 4 is provided with an upper cover body 6, the upper end face centering structure of the upper cover body 6 is provided with a box body 7, the top of the outer edge face of the shell 2 is provided with support wing plates 8 in an annular array, one end structure of each support wing plate 8 is connected to the top of the outer edge face of the shell 2, and the other end of each support wing plate 8 is used for supporting the bearing plate 1.

Working principle: this axial-flow water turbine stator control mechanism, during the use, can screw out the one end of fixing bolt 5 from the first 3 internal screw of link, can dismantle the separation with link two 4 and link one 3, and the accessible stir the stator body, make the stator body deflect, and drive the protruding axle 11 of damping and rotate, can provide resistance at stator body deflection in-process through the cooperation of the protruding axle 11 of damping and damping hole, accomplish the back to the stator body deflection, the accessible screws in the pivot 10 with the one end screw of locking bolt 13, can fix pivot 10, thereby realize the fixation to the stator body, and then realize the regulation to the stator interval that opens and shuts, install link two 4 and link one 3 through fixing bolt 5 afterwards, this axial-flow water turbine stator control mechanism, and is rational in infrastructure, be favorable to adapting to different rivers velocity of flow to use, the practicality is strong.

The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The guide vane control mechanism of the axial flow turbine comprises a bearing plate (1) with a shell (2) fixedly arranged at the center of the upper end surface;

the method is characterized in that: the novel rotary fan is characterized in that a water inlet groove is formed in the inner edge surface of the shell (2) in a ring array mode, a first connecting lug (9) and a second connecting lug (12) are respectively arranged at the bottom and the top of the inner wall of the shell (2) in a ring array mode, a rotary shaft (10) is rotatably arranged between the first connecting lug (9) and the second connecting lug (12) in a centering mode, a guide vane body is arranged on the outer edge surface of the rotary shaft (10) in a structure mode, a damping protruding shaft (11) is arranged in the bottom centering mode of the rotary shaft (10), a damping hole for rotatably installing the damping protruding shaft (11) is formed in the middle of the upper end face of the first connecting lug (9), and a locking bolt (13) with one end capable of being screwed into the top of the rotary shaft (10) in a spiral mode is arranged in the middle of the upper end of the second connecting lug (12).

2. The axial flow turbine vane control mechanism of claim 1, wherein: the top of the outer edge surface of the shell (2) is provided with a first connecting end (3), and the first connecting end (3) is connected with the top of the outer edge surface of the shell (2) in a structure.

3. The axial flow turbine vane control mechanism of claim 2, wherein: the upper end face of the first connecting end (3) is detachably provided with a second connecting end (4), the upper end face of the second connecting end (4) is provided with fixing bolts (5) in an annular array, and one end of each fixing bolt (5) can be screwed into the corresponding first connecting end (3) in a threaded mode.

4. The axial flow turbine vane control mechanism of claim 3, wherein: an upper cover body (6) is arranged on the upper end face centering structure of the second connecting end (4), and a box body (7) is arranged on the upper end face centering structure of the upper cover body (6).

5. The axial flow turbine vane control mechanism of claim 1, wherein: the outer edge surface top of casing (2) is annular array and is provided with support pterygoid lamina (8), the one end structure of support pterygoid lamina (8) is connected in the outer edge surface top of casing (2), and the other end of support pterygoid lamina (8) is used for supporting bearing plate (1).