CN217381602U

CN217381602U - Hydraulic turbine unit seal structure

Info

Publication number: CN217381602U
Application number: CN202220296499.5U
Authority: CN
Inventors: 彭云龙; 李志远
Original assignee: Leshan Minyuan Power Generation Equipment Co ltd
Current assignee: Leshan Minyuan Power Generation Equipment Co ltd
Priority date: 2022-02-15
Filing date: 2022-02-15
Publication date: 2022-09-06
Anticipated expiration: 2032-02-15

Abstract

The utility model discloses a hydraulic turbine seal structure relates to hydraulic turbine technical field. The utility model discloses a main shaft, flange and rotation seal cover, the flange mounting is at the main shaft lower surface, the rotation seal suit inlays in main shaft week side, normal running fit between rotation seal cover and the main shaft, the side dress has inlayed a plurality of pillars of supporting all around of rotation seal cover, pillar one end week side all adorns has inlayed fixed sleeve, sliding fit between pillar one end week side and the fixed sleeve internal surface, fixed sleeve one end dress has inlayed the mounting panel, the mounting panel is the annular plate body structure, mounting panel week side-mounting has fixed seal cover, be provided with sealed pressure passageway between fixed seal cover and the mounting panel. The utility model discloses a fixed sleeve and reset spring for support the post extrusion and rotate the seal cover, make to rotate the seal cover and hug closely the main shaft, make to rotate the seal cover simultaneously and possess certain elasticity space, improve the sealed effect of rotating the seal cover, guarantee the long-time operation of device, improve the continuation of sealed effect.

Description

Sealing structure of hydraulic turbine unit

Technical Field

The utility model belongs to the technical field of the hydraulic turbine unit, especially, relate to a hydraulic turbine unit seal structure.

Background

The hydroelectric generating set is the core equipment of a hydropower station. In order to monitor, control and ensure the normal operation of the water turbine generator set, and to realize safety, reliability, economy and high efficiency, a whole set of accessory equipment systems such as a quick gate, a turbine oil system, a compressed air system, a water supply and drainage system and automatic equipment (an automatic excitation device, a speed regulator, a water turbine automatic control system, an automatic element and the like) are installed in a hydropower station. With the continuous development and wide application of modern computer technology, the comprehensive automation level of the hydropower station is continuously improved, and many large and medium hydropower stations are monitored by computers to realize unattended operation.

Among the prior art, the sealed effect of hydraulic turbine seal structure is not good to after using for a long time, the condition of easily appearing sealed inefficacy leads to appearing the problem when follow-up use, influences the life of device.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a hydraulic turbine seal structure solves the current relatively poor problem of sealed effect.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme:

the utility model relates to a sealing structure of a hydraulic turbine unit, which comprises a main shaft, a flange and a rotary sealing sleeve, wherein the flange is arranged on the lower surface of the main shaft, the rotary sealing sleeve is embedded on the side surface of the circumference of the main shaft, the rotary sealing sleeve is in rotary fit with the main shaft, a plurality of support columns are embedded on the side surface of the circumference of the rotary sealing sleeve, fixing sleeves are embedded on the side surface of the circumference of one end of each support column, and the inner surfaces of the fixing sleeves are in sliding fit, so that the support columns extrude the rotary sealing sleeve, the rotary sealing sleeve is tightly attached to the main shaft, meanwhile, the rotary sealing sleeve has a certain elastic space, the sealing effect of the rotary sealing sleeve is improved, the long-time operation of the device is ensured, the continuity of the sealing effect is improved, a mounting plate is embedded at one end of the fixing sleeves, the mounting plate is in an annular plate structure, and the fixing sealing sleeves are arranged on the side surface of the mounting plate, and a sealing pressure channel is arranged between the fixed sealing sleeve and the mounting plate.

Furthermore, the bottom surface inside the fixed sleeve is provided with a limiting block, a return spring is installed between the bottom surface inside the fixed sleeve and the other end of the abutting column, and the return spring is wound on the side surface of the periphery of the limiting block.

Further, the upper surface of the fixed sealing sleeve is provided with a mounting groove, a water sealing gland is arranged in the mounting groove, the sealing effect of the device is further improved, the water sealing gland is of a circular plate body structure, and a plurality of clamping grooves are formed in the inner surface of the mounting groove.

Further, a plurality of fixture blocks have been inlayed to water sealing gland week side dress, the joint cooperation between fixture block and the draw-in groove, water sealing gland upper surface mounting has a plurality of second fastening bolt.

Furthermore, one end of the second fastening bolt is matched with the upper surface of the fixed sealing sleeve, and the water sealing gland is fixed with the fixed sealing sleeve through the second fastening bolt.

Further, the flange periphery side is embedded with the top cap, the fixed seal cover lower surface is embedded with the extension board, surface mounting has a plurality of fastening bolt on the extension board.

Further, be connected between first fastening bolt one end and the top cap upper surface, the extension board is connected through being connected between first fastening bolt and the top cap, makes things convenient for the installation and the dismantlement of device, improves operating personnel's maintenance efficiency.

The utility model discloses following beneficial effect has:

1. the utility model discloses a fixed sleeve and reset spring structure for support the post extrusion and rotate the seal cover, make to rotate the seal cover and hug closely the main shaft, make to rotate the seal cover simultaneously and possess certain elasticity space, improve the sealed effect of rotating the seal cover, guarantee the long-time operation of device, improve the continuation of sealed effect.

2. The utility model discloses a fixed seal cover structure further improves the sealed effect of device, simultaneously through first fastening bolt and second fastening bolt structure, makes things convenient for device's installation and dismantlement, improves operating personnel's maintenance efficiency.

Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.

Drawings

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

Fig. 1 is a schematic structural view of a sealing structure of a hydraulic turbine unit of the present invention;

fig. 2 is a rear view structural schematic diagram of the sealing structure of the hydraulic turbine unit of the present invention;

fig. 3 is a front view of the sealing structure of the hydraulic turbine set of the present invention;

fig. 4 is a schematic view of the internal structure of the fixed seal cartridge of the present invention;

fig. 5 is a schematic view of the internal structure of the middle fixing sleeve according to the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a main shaft; 2. a flange; 3. rotating the sealing sleeve; 4. supporting columns; 5. fixing the sleeve; 6. mounting a plate; 7. fixing a sealing sleeve; 8. sealing the pressure channel; 9. an extension plate; 10. a first fastening bolt; 11. a top cover; 12. mounting grooves; 13. sealing a water gland; 14. a second fastening bolt; 15. a clamping block; 16. a card slot; 17. a limiting block; 18. a return spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "middle", "outer", "inner", and the like, indicate positional or positional relationships, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referenced components or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

The first embodiment is as follows:

please refer to fig. 1-5, the utility model relates to a sealing structure of a water turbine set, which comprises a main shaft 1, a flange 2 and a rotary sealing sleeve 3, wherein the flange 2 is arranged on the lower surface of the main shaft 1, the rotary sealing sleeve 3 is embedded on the side surface of the main shaft 1, the rotary sealing sleeve 3 is in rotary fit with the main shaft 1, a plurality of support posts 4 are embedded on the side surface of the rotary sealing sleeve 3, a fixed sleeve 5 is embedded on the side surface of one end of each support post 4, the inner surface of the fixed sleeve 5 is in sliding fit with the side surface of one end of each support post 4, the rotary sealing sleeve 3 is extruded by the support posts 4, the rotary sealing sleeve 3 is tightly attached to the main shaft 1, meanwhile, the rotary sealing sleeve 3 has a certain elastic space, the sealing effect of the rotary sealing sleeve 3 is improved, the long-time operation of the device is ensured, the continuity of the sealing effect is improved, a mounting plate 6 is embedded at one end of the fixed sleeve 5, the mounting plate 6 is in a ring-shaped plate structure, the fixed sealing sleeve 7 is arranged on the peripheral side surface of the mounting plate 6, and a sealing pressure channel 8 is arranged between the fixed sealing sleeve 7 and the mounting plate 6.

The inside bottom surface of fixed sleeve 5 sets up stopper 17, and the inside bottom surface of fixed sleeve 5 and support to install reset spring 18 between the post 4 other end, and reset spring 18 twines in stopper 17 week side, and 2 week sides of flange dress have inlayed top cap 11, and the surface mounting has inlayed extension board 9 under the fixed seal cover 7, and surface mounting has a plurality of fastening bolt 10 on the extension board 9.

Be connected between first fastening bolt 10 one end and the top cap 11 upper surface, extension plate 9 is connected through being connected between first fastening bolt 10 and the top cap 11, makes things convenient for the installation and the dismantlement of device, improves operating personnel's maintenance efficiency.

The upper surface of the fixed sealing sleeve 7 is provided with a mounting groove 12, a water sealing gland 13 is arranged in the mounting groove 12, the sealing effect of the device is further improved, the water sealing gland 13 is of an annular plate body structure, and a plurality of clamping grooves 16 are formed in the inner surface of the mounting groove 12.

A plurality of fixture blocks 15 have been inlayed to the side of sealing gland 13 week, and the joint cooperation between fixture block 15 and the draw-in groove 16, and sealing gland 13 upper surface mounting has a plurality of second fastening bolt 14, mutually supports between 14 one end of second fastening bolt and the fixed seal cover 7 upper surface, and sealing gland 13 is fixed mutually through between second fastening bolt 14 and the fixed seal cover 7.

Example two:

referring to fig. 1-5, the present invention is a sealing structure for a hydraulic turbine, which is used in a method comprising: through fixed seal cover 7 structure, further improve the sealed effect of device, simultaneously through first fastening bolt 10 and second fastening bolt 14 structure, facilitate the installation and the dismantlement of device, improve operating personnel's maintenance efficiency, through fixed sleeve 5 and reset spring 18 structure, make to support 4 extrusion rotation seal covers 3 of post, make rotation seal cover 3 hug closely main shaft 1, make rotation seal cover 3 possess certain elastic space simultaneously, improve the sealed effect of rotation seal cover 3, guarantee the long-time operation of device, improve the persistence of sealed effect.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended to aid in the description of the invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, thereby enabling others skilled in the art to best understand the invention and its practical application. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a hydraulic turbine unit seal structure, includes main shaft (1), flange (2) and rotation seal cover (3), its characterized in that: the flange (2) is installed at main shaft (1) lower surface, it inlays in main shaft (1) week side to rotate seal cover (3) dress, normal running fit between rotation seal cover (3) and main shaft (1), it has a plurality of support posts (4) to rotate seal cover (3) week side dress, support post (4) one end week side all dress has inlayed fixed sleeve (5), sliding fit between support post (4) one end week side and fixed sleeve (5) internal surface, fixed sleeve (5) one end dress has inlayed mounting panel (6), mounting panel (6) are the annular plate body structure, fixed seal cover (7) are installed to mounting panel (6) week side, be provided with sealing pressure passageway (8) between fixed seal cover (7) and mounting panel (6).

2. The sealing structure of the hydraulic turbine unit according to claim 1, wherein a limiting block (17) is arranged on the bottom surface inside the fixing sleeve (5), a return spring (18) is arranged between the bottom surface inside the fixing sleeve (5) and the other end of the support column (4), and the return spring (18) is wound on the peripheral side surface of the limiting block (17).

3. The sealing structure of the hydraulic turbine unit as claimed in claim 1, wherein the fixed sealing sleeve (7) is provided with a mounting groove (12) on the upper surface, a water sealing gland (13) is mounted inside the mounting groove (12), the water sealing gland (13) is of a circular ring plate structure, and a plurality of clamping grooves (16) are formed on the inner surface of the mounting groove (12).

4. The sealing structure of the hydraulic turbine unit according to claim 3, wherein a plurality of clamping blocks (15) are embedded on the peripheral side of the water sealing gland (13), the clamping blocks (15) are in clamping fit with the clamping grooves (16), and a plurality of second fastening bolts (14) are mounted on the upper surface of the water sealing gland (13).

5. The sealing structure of the hydraulic turbine unit as claimed in claim 4, wherein one end of the second fastening bolt (14) is matched with the upper surface of the fixed sealing sleeve (7), and the water sealing gland (13) is fixed with the fixed sealing sleeve (7) through the second fastening bolt (14).

6. The sealing structure of the hydraulic turbine unit according to claim 1, wherein a top cover (11) is embedded on the peripheral side of the flange (2), an extension plate (9) is embedded on the lower surface of the stationary seal sleeve (7), and a plurality of first fastening bolts (10) are mounted on the upper surface of the extension plate (9).

7. The sealing structure of a hydraulic turbine unit according to claim 6, wherein one end of the first fastening bolt (10) is connected to the upper surface of the top cover (11), and the extension plate (9) is connected to the top cover (11) through the first fastening bolt (10).