CN216044136U

CN216044136U - Shaft sleeve structure of piston rod and runner body in pressurized runner

Info

Publication number: CN216044136U
Application number: CN202122289156.4U
Authority: CN
Inventors: 张云婷
Original assignee: Tianjin Tianfa Heavy Hydropower Equipment Manufacturing Co Ltd
Current assignee: Tianjin Tianfa Heavy Hydropower Equipment Manufacturing Co Ltd
Priority date: 2021-09-22
Filing date: 2021-09-22
Publication date: 2022-03-15
Anticipated expiration: 2031-09-22

Abstract

The utility model relates to the technical field of hydraulic turbine mechanical equipment, and provides a shaft sleeve structure of a piston rod and a runner body in a pressurizing type runner. The utility model relates to a shaft sleeve structure of a piston rod and a runner body in a pressurized runner, which comprises: the sealing ring fixing device comprises a rotating wheel body, a piston rod, a shaft sleeve, a sealing ring and a pressing plate, wherein the shaft sleeve is arranged in the rotating wheel body, the shaft sleeve is matched with the piston rod for use, the sealing ring is coaxially arranged on the shaft sleeve, the outer diameter of the sealing ring is larger than that of the shaft sleeve, the pressing plate is arranged on the upper side of the sealing ring, the pressing plate is arranged on the rotating wheel body, and the pressing plate is used for fixing the sealing ring.

Description

Shaft sleeve structure of piston rod and runner body in pressurized runner

Technical Field

The utility model relates to the technical field of hydraulic turbine mechanical equipment, in particular to a shaft sleeve structure of a piston rod and a runner body in a pressurizing type runner.

Background

The through-flow turbine has compact structure, less civil construction investment, short construction period and better hydraulic performance, and is a good machine type for developing low-head river resources and tidal energy. Although the research on the through-flow turbine started late, it developed rapidly. The demand is continuously enlarged, and the development prospect is wide.

A piston rod in a rotating part sleeve of an original through-flow ram-type water turbine and a shaft sleeve of a runner body are both of an L-shaped structure integrated with a vertical surface and a shaft surface.

As in application No.: CN202300795U discloses a tubular turbine rotates outer axle sleeve structure, characterized by, abandon build-up welding stainless steel, adopt just, two outer axle sleeves of anti-L shape, utilize the facade of the outer anti-L shape outer axle sleeve of outside to play the anti-thrust and wear-resisting effect.

Because the piston rod in the through-flow ram-type turbine rotating part sleeve and the shaft sleeve of the runner body adopt a vertical surface and shaft surface integrated L-shaped structure, each unit with different sizes needs to manufacture different dies according to the L-shaped structure, the cost is high, and the installation is inconvenient; in addition, the L-shaped sealing shaft sleeve is integrated and made of the same material, generally made of a cast nonferrous metal material of ZCuSn10Pb1, so that the cost is high, and two sealing rings are needed for mounting the L-shaped sealing shaft sleeve to ensure the sealing effect, as shown in FIG. 8.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems that because a piston rod in a rotating part sleeve of the through-flow stamping type water turbine and a shaft sleeve of a runner body adopt a vertical surface and shaft surface integrated L-shaped structure, different dies are required to be manufactured for each unit with different sizes according to the L-shaped structure, the cost is high, and the installation is inconvenient; in addition, the L-shaped sealing shaft sleeve is integrated and made of the same material, the same material is generally used for the ZCuSn10Pb1 cast nonferrous metal material, the cost is high, and two sealing rings are needed for mounting the L-shaped sealing shaft sleeve to ensure the sealing effect.

A shaft sleeve structure of a piston rod and a rotating wheel body in a pressurized rotating wheel comprises: the sealing ring sealing device comprises a runner body, a piston rod, a shaft sleeve, a sealing ring and a pressing plate, wherein the shaft sleeve is arranged in the runner body, the shaft sleeve is matched with the piston rod for use, the sealing ring is coaxially arranged on the shaft sleeve, the outer diameter of the sealing ring is larger than that of the shaft sleeve, the pressing plate is arranged on the upper side of the sealing ring, the pressing plate is arranged on the runner body, and the pressing plate is used for fixing the sealing ring.

Preferably, the runner hub includes: the device comprises a cylindrical surface A, a cylindrical surface B, a cylindrical surface C, a bottom surface A, a bottom surface B and an upper end surface A, wherein the cylindrical surface A is connected with the cylindrical surface B through the bottom surface A, the cylindrical surface B is connected with the cylindrical surface C through the bottom surface B, and the upper side of the cylindrical surface C is connected with the upper end surface A.

Preferably, the bushing includes: face D, face E, bottom surface C and up end B, face E and face B laminating, bottom surface C and bottom surface A laminating, face D diameter is less than face A diameter, up end B and the laminating of sealing washer bottom surface.

Preferably, the seal ring comprises: the sealing ring comprises a cylindrical surface F and a cylindrical surface G, the diameter of the cylindrical surface G is larger than that of the cylindrical surface E, the diameter of the cylindrical surface F is equal to that of the cylindrical surface D, the bottom surface of the sealing ring is attached to the bottom surface B and the upper end surface B, and the upper end surface of the sealing ring is attached to the bottom surface of the pressing plate.

Preferably, the pressing plate includes: the diameter of the cylindrical surface H is larger than that of the cylindrical surface F and smaller than that of the cylindrical surface E, the diameter of the cylindrical surface K is larger than that of the cylindrical surface E, and the lower end face of the pressing plate is attached to the upper end face and the upper end face A of the sealing ring.

Preferably, the pressing plate is made of high-quality carbon steel.

Preferably, the shaft sleeve is made of FZ-6 bimetal self-lubricating material.

Preferably, a symmetrical groove is formed in the bottom surface a, and the groove comprises: the inner wall surface is an arc surface, and the diameter of the inner wall surface is equal to that of the cylindrical surface B.

The utility model has the advantages that: the utility model adopts a split structure and is divided into two parts of the pressure plate and the shaft sleeve, the pressure plate adopts high-quality carbon steel, the shaft sleeve adopts FZ-6 bimetal self-lubricating material, the integral casting procedure is reduced, the cost is saved, the sealing ring is arranged at the upper part of the shaft sleeve after the shaft sleeve is arranged in the runner body, and the pressure plate is used for fixing, the sealing effect can be ensured by using one sealing, compared with the prior art, the material cost is saved, and the product percent of pass is greatly improved.

Drawings

FIG. 1 is a schematic view of a runner hub according to the present invention;

FIG. 2 is a schematic structural view of the bushing of the present invention;

FIG. 3 is a schematic view of a runner hub according to the present invention;

FIG. 4 is a cross-sectional view of the bushing of the present invention;

FIG. 5 is a cross-sectional view of a seal ring of the present invention

FIG. 6 is a cross-sectional view of the platen of the present invention;

FIG. 7 is a cross-sectional view of a groove of the present invention;

FIG. 8 is a schematic diagram of a prior art configuration;

1. a runner hub; 2. a piston rod; 3. a shaft sleeve; 4. a seal ring; 5. pressing a plate; 11. a cylindrical surface A; 12. a cylindrical surface B; 13. a cylindrical surface C; 14. a bottom surface A; 15. a bottom surface B; 16. an upper end surface A; 31. a cylindrical surface D; 32. a cylindrical surface E; 33. a bottom surface C; 34. an upper end face B; 41. a cylindrical surface F; 42. a cylindrical surface G; 51. a cylindrical surface H; 52. a cylindrical surface K; 141. a groove; 142. an inner wall surface.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that the installation methods and technical terms mentioned in the present invention are technical terms that are already clearly known in the technical field, and thus, the explanation thereof is not repeated. Moreover, the same reference numerals are used for the same components, which do not affect and should not constitute an exact understanding of the technical solutions for a person skilled in the art.

The first embodiment is described with reference to fig. 1 and 2:

a shaft sleeve structure of a piston rod and a rotating wheel body in a pressurized rotating wheel comprises: the sealing device comprises a rotating wheel body 1, a piston rod 2, a shaft sleeve 3, a sealing ring 4 and a pressing plate 5, wherein the shaft sleeve 3 is arranged in the rotating wheel body 1, the shaft sleeve 3 is matched with the piston rod 2 for use, the sealing ring 4 is coaxially arranged on the shaft sleeve 3, the outer diameter of the sealing ring 4 is larger than that of the shaft sleeve 3, the pressing plate 5 is arranged on the upper side of the sealing ring 4, the pressing plate 5 is arranged on the rotating wheel body 1 and is used for fixing the sealing ring 4, the sealing ring 4 plays a sealing role, the sealing ring can seal a gap between the rotating wheel body 1 and the piston rod 2 and can also seal a gap between the rotating wheel body 1 and the shaft sleeve 3, the split type shaft sleeve 3 and the pressing plate 5 are adopted, the shaft sleeve 3 is of a thin-wall structure, the production cost is reduced, the maintenance and the pressing plate 5 fixes the shaft sleeve 3 and the sealing ring 4 and is convenient to disassemble and assemble.

In the second embodiment, the following is described with reference to fig. 3 on the basis of the first embodiment:

the runner hub 1 includes: the mounting structure comprises a cylindrical surface A11, a cylindrical surface B12, a cylindrical surface C13, a bottom surface A14, a bottom surface B15 and an upper end surface A16, wherein the cylindrical surface A11 is connected with the cylindrical surface B12 through the bottom surface A14, the cylindrical surface B12 is connected with the cylindrical surface C13 through the bottom surface B15, and the upper end surface A16 is connected to the upper side of the cylindrical surface C13.

In the third embodiment, the following description is made with reference to fig. 4 on the basis of the second embodiment:

the shaft sleeve 3 includes: face D31, face E32, bottom surface C33 and up end B34, face E32 and face B12 laminating, bottom surface C33 and bottom surface A14 laminating, face D31 diameter is less than face A11 diameter, and up end B34 and the laminating of sealing washer 4 bottom surface, so set up, axle sleeve 3 internal diameter is less than face A11 diameter, prevents that piston rod 2 from destroying face A11 when moving in axle sleeve 3.

In a fourth embodiment, the following is explained with reference to fig. 5 on the basis of the third embodiment:

the seal ring 4 includes: cylindrical surface F41 and cylindrical surface 642, cylindrical surface 642 diameter is greater than cylindrical surface E32 diameter, and cylindrical surface F41 diameter equals cylindrical surface D31 diameter, and 4 bottom surfaces of sealing washer are laminated with bottom surface B15 and up end B34, and 4 up end of sealing washer are laminated with clamp plate 5 bottom surface, so set up, and the sealing washer not only can seal the clearance between runner body 1 and the piston rod 2 but also can seal the gap between runner body 1 and the axle sleeve 3.

In the fifth embodiment, the following description is given with reference to fig. 6 on the basis of the fourth embodiment:

the platen 5 includes: face H51 and face K52, face H51 diameter is greater than face F41 diameter and is less than face E32 diameter, and face K52 diameter is greater than face E32 diameter, and the terminal surface is laminated with sealing washer 4 up end and up end A16 under the clamp plate 5, so sets up, is provided with the screw on face K52, and clamp plate 5 passes through screw fixed mounting on runner body 1.

In a sixth embodiment, a description is given, with reference to fig. 1, of:

the pressing plate 5 is made of high-quality carbon steel, and the pressing plate 5 is made of the high-quality carbon steel, so that the pressing plate is durable and is not easy to corrode.

The seventh embodiment is explained with reference to fig. 1 on the basis of the sixth embodiment:

the shaft sleeve 3 is made of an FZ-6 bimetal self-lubricating material, and the arrangement is that the shaft sleeve 3 is made of the FZ-6 bimetal self-lubricating material, so that the wear resistance and corrosion resistance are realized, and the cost is low.

In an eighth embodiment, the following description is made with reference to fig. 7 on the basis of the seventh embodiment:

the bottom surface a14 is provided with symmetrical grooves 141, and the grooves 141 include: the internal wall face 142, internal wall face 142 is the arc surface, and internal wall face 142 diameter equals with face of cylinder B12 diameter, so set up, when the axle sleeve 3 of needs takes out, use the pin puller card go into the recess 141 of axle sleeve 3 lower surface, take out can, convenient dismantlement.

The utility model has been adopted in the project of rebuilding hub ship lock, the model of the power station is GZTF08F-WP-325, and the power station is a through-flow turbine with the diameter of a runner of 3.25 m.

The working principle of the utility model is as follows: a shaft sleeve structure of a piston rod and a rotating wheel body in a pressurizing type rotating wheel is characterized in that a shaft sleeve 3 is arranged in the rotating wheel body 1, the shaft sleeve 3 is matched with the piston rod 2 for use, a sealing ring 4 is coaxially arranged on the shaft sleeve 3, the outer diameter of the sealing ring 4 is larger than that of the shaft sleeve 3, a pressing plate 5 is arranged on the upper side of the sealing ring 4, the pressing plate 5 is arranged on the rotating wheel body 1 and used for fixing the sealing ring 4, the sealing ring 4 plays a sealing role, the sealing ring can not only seal a gap between the rotating wheel body 1 and the piston rod 2, but also seal a gap between the rotating wheel body 1 and the shaft sleeve 3, a split type shaft sleeve 3 and the pressing plate 5 are adopted, the shaft sleeve 3 adopts a thin-wall structure, the production cost is reduced, the maintenance and the disassembly and assembly are convenient, the material is saved, the manufacturing cost is low, and the performance is improved by adopting the split type structure, but also greatly improves the product percent of pass.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and any minor modifications, equivalent replacements and improvements made to the above embodiment according to the technical spirit of the present invention should be included in the protection scope of the technical solution of the present invention.

Claims

1. The utility model provides a piston rod and shaft sleeve structure of runner body in pressure-charging formula runner which characterized in that includes: the sealing device comprises a runner body (1), a piston rod (2), a shaft sleeve (3), a sealing ring (4) and a pressing plate (5), wherein the shaft sleeve (3) is arranged in the runner body (1), the shaft sleeve (3) is matched with the piston rod (2) for use, the sealing ring (4) is coaxially arranged on the shaft sleeve (3), the outer diameter of the sealing ring (4) is larger than that of the shaft sleeve (3), the pressing plate (5) is arranged on the upper side of the sealing ring (4), the pressing plate (5) is arranged on the runner body (1), and the pressing plate (5) is used for fixing the sealing ring (4).

2. The bushing structure of a piston rod and a rotating wheel body in a pressurized rotating wheel according to claim 1, wherein the rotating wheel body (1) comprises: face A (11), face B (12), face C (13), bottom A (14), bottom B (15) and up end A (16), face A (11) are connected with face B (12) through bottom A (14), and face B (12) are connected with face C (13) through bottom B (15), and face C (13) upside is connected with up end A (16).

3. The bushing structure of the piston rod and the rotating wheel body in the pressurized rotating wheel according to claim 2, wherein the bushing (3) comprises: face D (31), face E (32), bottom surface C (33) and up end B (34), face E (32) and face B (12) laminating, bottom surface C (33) and bottom surface A (14) laminating, face D (31) diameter is less than face A (11) diameter, and up end B (34) and sealing washer (4) bottom surface laminating.

4. The bushing structure of a piston rod and a rotating wheel body in a pressurized rotating wheel according to claim 3, wherein the sealing ring (4) comprises: face of cylinder F (41) and face of cylinder G (42), face of cylinder G (42) diameter is greater than face of cylinder E (32) diameter, and face of cylinder F (41) diameter equals face of cylinder D (31) diameter, and sealing washer (4) bottom surface and bottom surface B (15) and up end B (34) laminating, sealing washer (4) up end and clamp plate (5) bottom surface laminating.

5. The bushing structure of the piston rod and the rotating wheel body in the pressurized rotating wheel according to claim 4, wherein the pressure plate (5) comprises: the sealing device comprises a cylindrical surface H (51) and a cylindrical surface K (52), wherein the diameter of the cylindrical surface H (51) is larger than that of a cylindrical surface F (41) and smaller than that of a cylindrical surface E (32), the diameter of the cylindrical surface K (52) is larger than that of the cylindrical surface E (32), and the lower end face of the pressing plate (5) is attached to the upper end face and the upper end face A (16) of the sealing ring (4).

6. The bushing structure of the piston rod and the rotating wheel body in the pressurized rotating wheel according to claim 1, wherein the pressing plate (5) is made of high-quality carbon steel.

7. The bushing structure of a piston rod and a rotating wheel body in a pressurized rotating wheel according to claim 1, wherein the bushing (3) is made of FZ-6 bimetal self-lubricating material.

8. The shaft sleeve structure of the piston rod and the rotating wheel body in the pressurized rotating wheel according to claim 2, wherein the bottom surface a (14) is provided with symmetrical grooves (141), and the grooves (141) comprise: the inner wall surface (142), the inner wall surface (142) is the arc surface, and the diameter of inner wall surface (142) is equal to the diameter of cylindrical surface B (12).