CN214366512U

CN214366512U - Adjustable structure for end surface clearance of small and medium-sized vertical water turbine

Info

Publication number: CN214366512U
Application number: CN202023035676.4U
Authority: CN
Inventors: 张晨颖; 陈红
Original assignee: Tianjin Tianfa Heavy Hydropower Equipment Manufacturing Co Ltd
Current assignee: Tianjin Tianfa Heavy Hydropower Equipment Manufacturing Co Ltd
Priority date: 2020-12-16
Filing date: 2020-12-16
Publication date: 2021-10-08
Anticipated expiration: 2030-12-16

Abstract

The utility model relates to a hydroelectric set technical field especially relates to adjustable structure of middle-size and small-size vertical hydraulic turbine terminal surface clearance, include to closing the bolt, to closing the nut, the plain washer, thin tooth thread adjustment cover one end is equipped with the thin tooth thread cardboard that can supply to adjust, through the rotatory thin tooth thread cardboard with the spanner, just can adjust the height on the top cap, when stator and top cap, bottom ring terminal surface clearance increase, adjustment steel bushing and top cap relative position compensate terminal surface clearance, thereby reduce water guide mechanism terminal surface clearance, reduce the volume of leaking of terminal surface. Meanwhile, in the part design, the adjustable gap is formed, so that the machining precision of each part in the size chain is reduced, and the advantages of reducing the production cost and being convenient and fast to adjust are achieved.

Description

Adjustable structure for end surface clearance of small and medium-sized vertical water turbine

Technical Field

The utility model relates to a hydroelectric set technical field especially relates to adjustable structure of middle-size and small-size vertical hydraulic turbine end face clearance.

Background

The traditional combination is simple bolt connection, and the end surface clearance of the guide vane is ensured by processing a dimension chain and assembling and is not adjustable. The end face gaps between the guide vane and the top cover and between the guide vane and the bottom ring can be increased after the machine set is operated for a long time or the power station has large silt and is easy to wear, and after the gap is large and the guide vane is completely closed, the water leakage amount still can enable the rotating wheel to rotate, so that the stability of the machine set is influenced, as shown in figure 3. In addition, in the case of a modified unit, since the embedded part of the unit cannot be replaced, a new structure is required for adjustment, compensation and improvement.

Therefore, a structure capable of adjusting the end face clearance of the small and medium-sized vertical water turbine, which can solve the above problems, is needed.

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model aims at providing a middle-size and small-size vertical hydraulic turbine end face clearance adjustable structure, new construction is gone up and is considered end face clearance and can adjust after operation a period. In the part design, because adjustable clearance has been had, so reduced the machining precision of each part in the size chain to have reduction in production cost, adjust convenient advantage.

The utility model discloses a solve the technical scheme that above-mentioned technical problem adopted and be: the adjustable structure of medium and small vertical hydraulic turbine terminal surface clearance, including guiding mechanism, guiding mechanism sets up between top cap and seat ring, and guiding mechanism includes to close the bolt, to closing nut, fine thread adjusting sleeve, and top cap one end is equipped with the fine tooth internal thread with fine thread adjusting sleeve threaded connection, and top cap and seat ring are through closing bolt mutual threaded connection, and fine tooth thread adjusting sleeve one end is equipped with the fine tooth screw thread cardboard that can supply to adjust.

Furthermore, one end of the fine thread adjusting sleeve is provided with an adjustable fine thread clamping plate, the fine thread clamping plate is in a half-moon-tooth shape, and the two fine thread clamping plates are arranged symmetrically left and right.

Furthermore, the inside of the fine thread adjusting sleeve is a smooth plane.

Furthermore, a flat gasket is arranged between the handle nut and the top cover.

The utility model has the advantages that: the utility model provides an adjustable structure of middle-size and small-size vertical hydraulic turbine terminal surface clearance, including guiding mechanism, guiding mechanism is by closing the bolt, close the nut, the plain washer, fine thread adjusting sleeve constitutes, top cap one end is equipped with the fine internal thread of tooth with fine thread adjusting sleeve threaded connection, with closing the mutual threaded connection of bolt, fine thread adjusting sleeve one end is equipped with the fine thread cardboard that can supply the regulation, through with the rotatory fine thread cardboard of spanner, just can be on the top cap height-adjusting, when stator and top cap, when bottom ring terminal surface clearance increases, adjustment steel bushing and top cap relative position, compensate terminal surface clearance, thereby reduce water distributor terminal surface clearance, reduce the volume of leaking of terminal surface. Meanwhile, in the part design, the adjustable gap is formed, so that the machining precision of each part in the size chain is reduced, and the advantages of reducing the production cost and being convenient and fast to adjust are achieved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of the installation of the three-dimensional structure of the present invention;

FIG. 2 is a schematic view of the fine thread adjusting sleeve of the present invention;

FIG. 3 is a schematic diagram of a prior art structure;

wherein:

1. an adjustment mechanism; 2. Screwing the bolts; 3. Screwing the nut;

4. a flat washer; 5. A fine thread adjusting sleeve; 6. Adjusting the clearance;

7. a seat ring; 8. A top cover; 9. A guide vane lever;

10. a guide blade body; 11. A top cover wear plate; 12. The upper end surface of the guide vane body;

13. an upper seal ring; 14. Guide vane end face clearance; 15. Fine internal threads;

16. a fine thread snap gauge; 17. A sleeve.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that unless otherwise explicitly specified or limited, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on those 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 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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1:

fig. 1 is the utility model discloses a spatial structure installation schematic diagram, fig. 2 is the utility model discloses a thin tooth thread adjustment cover schematic diagram, as shown in fig. 2, 5 one ends of thin tooth thread adjustment cover have thin tooth thread cardboard 16, through twisting the height that this thin tooth thread cardboard 16 adjustment top cap 8 was twisted with the spanner and just can change adjustment clearance 6, just can indirectly change stator end face clearance 14 through changing adjustment clearance 6, and stator end face clearance 14 is the unit is essential, stator end face clearance 14 refers to the clearance between top cap anti-template 11 and the stator up end 12. After the gap is adjusted, the handle bolt 2, the flat washer 4 and the top cover 8 are connected together through the handle nut 3.

The working mode is as follows: the utility model provides a middle-size and small-size vertical hydraulic turbine terminal surface clearance adjustable structure, the utility model discloses when using, earlier in the thin tooth internal thread 15 of thin tooth screw thread adjusting sleeve 5 screw in top cap 8, need outwards thin tooth screw thread cardboard 16 one end, adjust the distance between seat ring 7 and the top cap 8 through revolving the thin tooth screw thread cardboard 16 of twisting on the thin tooth screw thread adjusting sleeve 5 with the spanner, form an adjustment clearance 6, because also there is the space between top cap 8 and the guide vane body 10, and this space is the necessary stator terminal surface clearance 14 of unit, and this clearance is just through changing the indirect change in adjustment clearance 6. When the gap is adjusted to a proper position, one end of the closing bolt 2 penetrates through the fine thread adjusting sleeve 5 and is screwed into the seat ring 7, the other end of the closing bolt 2 sleeves the flat washer 4 into the closing bolt 2, finally, the closing nut 3 is screwed, the installation is completed, after the unit works for a period of time, the guide vane end surface gap 14 can be changed along with the operation, at the moment, the closing nut 3 can be loosened, the flat washer 4 is taken down, the fine thread clamping plate 16 on the fine thread adjusting sleeve 5 is screwed by a spanner, the distance between the seat ring 7 and the top cover 8 is changed, the guide vane end surface gap 14 is indirectly adjusted, after the adjustment is completed, the flat washer 4 and the closing nut 3 are restored, and the unit can continue to stably run. The utility model discloses owing to there is adjustable clearance 6, so reduced the machining precision of each part in the size chain to have reduction in production cost, adjust convenient advantage.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. Adjustable structure of middle-size and small-size vertical turbine terminal surface clearance, including guiding mechanism (1), guiding mechanism sets up between top cap (8) and seat ring (7), its characterized in that: adjusting mechanism (1) is including closing bolt (2), closing nut (3), fine tooth screw thread adjusting sleeve (5), and top cap (8) one end is equipped with fine tooth internal thread (15) with fine tooth screw thread adjusting sleeve (5) threaded connection, and top cap (8) and seat ring (7) are through closing bolt (2) mutual threaded connection, and fine tooth screw thread cardboard (16) that fine tooth screw thread adjusting sleeve (5) one end can supply to adjust.

2. The adjustable structure of the end face clearance of the small and medium-sized vertical water turbine according to claim 1, characterized in that: one end of the fine thread adjusting sleeve (5) is provided with a fine thread clamping plate (16) which can be adjusted, the fine thread clamping plate (16) is in a half-moon-tooth shape, and the two fine thread clamping plates are arranged symmetrically left and right.

3. The adjustable structure of the end face clearance of the small and medium-sized vertical water turbine according to claim 2, characterized in that: the inside of the fine thread adjusting sleeve (5) is a smooth plane.

4. The adjustable structure of the end face clearance of the small and medium-sized vertical water turbine according to claim 1, characterized in that: a flat washer (4) is arranged between the handle nut (3) and the top cover (8).