CN211648352U

CN211648352U - Hydraulic turbine main shaft sealing rubber block

Info

Publication number: CN211648352U
Application number: CN201922474242.5U
Authority: CN
Inventors: 陶国
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-10-09
Anticipated expiration: 2029-12-31

Abstract

The utility model discloses a belong to the technical field of the sealing rubber piece, specifically be a hydraulic turbine main shaft sealing rubber piece, including main shaft and lateral wall, the through-hole has been seted up at the lateral wall middle part, the main shaft is located same axis with the through-hole, the main shaft upside has cup jointed the ring that wear-resistants, through-hole upside screw connection has the card shoulder, the card shoulder is located ring top of wearing-resistants, ring downside fixedly connected with wear plate that wear-resistants, the main shaft upside has cup jointed the sealing rubber piece, through the ascending setting in sealing rubber piece plane, can increase and wear-resistants between the face, the sealing rubber piece upper wall is thicker, and intensity is better, reaches that wearing and tearing are little, the stagnant water face is wide, indeformable and the effect that the volume of leaking is little, reduces the wearing and tearing of sealing rubber piece through setting up.

Description

Hydraulic turbine main shaft sealing rubber block

Technical Field

The utility model relates to a sealing rubber piece technical field specifically is a hydraulic turbine main shaft sealing rubber piece.

Background

The hydraulic turbine is a power machine for converting the energy of water flow into rotary mechanical energy, and belongs to the turbine machinery in fluid machinery. As early as 100 years before the Yuan, the prototype of the water turbine, namely the water wheel, appears in China, and most of the modern water turbines for pumping irrigation and driving grain processing equipment are installed in a hydropower station and are used for driving a generator to generate electricity. In a hydropower station, water in an upstream reservoir is guided to a water turbine through a water guide pipe to push a water turbine runner to rotate so as to drive a generator to generate electricity. The water after doing work is discharged to the downstream through the tail water pipeline. The higher the water head and the larger the flow, the larger the output power of the water turbine is.

The traditional water turbine main shaft sealing rubber block is easy to wear, the service life of the sealing rubber block is shortened, workers need to replace the sealing rubber block regularly, and the overhauling and maintenance work is increased; the sealing rubber block is easy to dry rub with the wear-resistant plate, so that the sealing rubber block is burnt to influence the normal operation of the water turbine; the water leakage amount of the main shaft seal is unstable.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a water turbine main shaft sealing rubber block, which solves the problems that the traditional water turbine main shaft sealing rubber block proposed in the background technology is easy to be worn, reduces the service life of the sealing rubber block, leads workers to need to be replaced regularly, and increases the maintenance work; the sealing rubber block is easy to dry rub with the wear-resistant plate, so that the sealing rubber block is burnt to influence the normal operation of the water turbine; the water leakage of the main shaft seal is unstable.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a hydraulic turbine main shaft sealing rubber piece, includes main shaft and lateral wall, the through-hole has been seted up at the lateral wall middle part, the main shaft is located same axis with the through-hole, the ring that wear-resistants has been cup jointed to the main shaft upside, through-hole upside screw connection has the card shoulder, the card shoulder is located ring top of wearing, ring downside fixedly connected with wear plate that wears, the main shaft has cup jointed sealing rubber piece, sealing rubber piece is located wear plate below, through-hole downside screw connection has the fixture block, the fixture block is located sealing rubber piece below, the lubricated basin has been seted up to sealing rubber piece upside, lubricated basin is the annular, the outlet has been seted up to sealing rubber piece upside.

Preferably, the depth of the lubricating water groove is 3-5 cm.

Preferably, the wear plate is a stainless steel wear plate.

Preferably, the number of the drain holes is 2-4, and the drain holes are uniformly distributed.

Preferably, the lubricating water groove is positioned on the upper middle side of the annular wall of the sealing rubber block.

Compared with the prior art, the beneficial effects of the utility model are that:

1) the sealing surface between the sealing rubber block and the wear-resistant plate can be increased by arranging the sealing rubber block with the plane upward, the upper wall of the sealing rubber block is thicker, the strength is better, and the effects of small abrasion, wide water-stopping surface, no deformation and small water leakage are achieved;

2) by arranging the lubricating water tank, the lubricating condition of the sealing end surface is improved, so that the abrasion of the sealing end surface is reduced, a lubricating water film of the sealing surface is ensured, and the dry friction between the sealing rubber block and the wear-resistant plate is avoided, so that the sealing rubber block is burnt;

3) the setting through the outlet reduces the sealed water pressure of main shaft, reduces the wearing and tearing of sealing rubber piece, improves life.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the cross-sectional structure of the sealing rubber block of the present invention;

fig. 3 is a schematic view of the overlooking structure of the rubber block of the present invention.

In the figure: the anti-wear device comprises a main shaft 1, an anti-wear ring 2, a sealing rubber block 3, a clamping block 4, a side wall 5, a lubricating water tank 6, a water drainage hole 7, a through hole 8, a clamping shoulder 9 and an anti-wear plate 10.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying 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 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 is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships 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 being 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.

Example (b):

referring to fig. 1-3, the present invention provides a technical solution: a hydraulic turbine main shaft sealing rubber block comprises a main shaft 1 and a side wall 5, wherein a through hole 8 is formed in the middle of the side wall 5, the main shaft 1 and the through hole 8 are located on the same axis, an anti-wear ring 2 is sleeved on the upper side of the main shaft 1, a clamping shoulder 9 is connected to the upper side of the through hole 8 through a screw, the clamping shoulder 9 is located above the anti-wear ring 2, an anti-wear plate 10 is fixedly connected to the lower side of the anti-wear ring 2, a sealing rubber block 3 is sleeved on the main shaft 1, the sealing rubber block 3 is located below the anti-wear plate 10, a certain gap exists between the sealing rubber block 3 and the anti-wear plate 10, when water pressure exists on the lower side of the sealing rubber block 3, the sealing rubber block 3 rises to the top end under the action of the water pressure to be in contact with the anti-wear plate 10, a flowing water film is generated on a contact surface, the sealing, the fixture block 4 is located below the limiting sealing rubber block 3, the position of the lower side of the limiting sealing rubber block 3 is limited, a lubricating water tank 6 is arranged on the upper side of the sealing rubber block 3, the lubricating water tank 6 is annular, the lubricating condition between the sealing rubber block 3 and the wear-resistant plate 10 is improved, the abrasion of a sealing end surface is reduced, a sealing surface lubricating water film is guaranteed, a water drainage hole 7 is formed in the upper side of the sealing rubber block 3, some water flow can be discharged from the water drainage hole 7, therefore, the main shaft sealing water pressure is reduced, the abrasion is reduced, the groove edge of the sealing rubber block 3 is processed, the groove edge is changed into a thin skirt edge, and the rising and falling flexibility of the sealing rubber block 3 is.

The depth of the lubricating water tank 6 is 3-5 cm.

The wear-resistant plate 10 is a stainless steel wear-resistant plate, and has high strength and strong wear resistance.

2-4 drain holes 7 are provided, and the drain holes 7 are uniformly distributed, so that the sealing water pressure of the main shaft is reduced, and the abrasion of the sealing rubber block 3 is reduced.

The lubricating water tank 6 is positioned on the upper middle side of the annular wall of the sealing rubber block 3.

The working principle is as follows: when water pressure exists at the lower side of the sealing rubber block 3, the sealing rubber block 3 rises to the top end under the action of the water pressure to be contacted with the wear-resistant plate 10, a flowing water film is generated on a contact surface, only a small part of water flows leak, meanwhile, the certain water leakage amount also ensures that the sealing rubber block 3 is not burnt out due to dry friction overheating, the lubricating water tank 6 improves the lubricating condition of the sealing end surface to reduce the abrasion of the sealing end surface and ensure the lubricating water film of the sealing surface, the arrangement of the water drainage hole 7 reduces the water pressure of the main shaft seal, reduces the abrasion of the sealing rubber block 3 and prolongs the service life.

Having shown and described the basic principles and principal features of the invention and advantages thereof, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention 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, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a hydraulic turbine main shaft sealing rubber piece, includes main shaft (1) and lateral wall (5), its characterized in that: through-hole (8) have been seted up at lateral wall (5) middle part, main shaft (1) is located same axis with through-hole (8), ring (2) wear-resisting have been cup jointed to main shaft (1) upside, through-hole (8) upside screw connection has card shoulder (9), card shoulder (9) are located ring (2) top wear-resisting, ring (2) downside fixedly connected with wear plate (10) wear-resisting, sealing rubber piece (3) have been cup jointed in main shaft (1), sealing rubber piece (3) are located wear plate (10) below, through-hole (8) downside screw connection has fixture block (4), fixture block (4) are located sealing rubber piece (3) below, lubricating water groove (6) have been seted up to sealing rubber piece (3) upside, lubricating water groove (6) are the annular, outlet (7) have been seted up to sealing rubber piece (3) upside.

2. The water turbine main shaft sealing rubber block according to claim 1, wherein: the depth of the lubricating water tank (6) is 3-5 cm.

3. The water turbine main shaft sealing rubber block according to claim 1, wherein: the wear plate (10) is a stainless steel wear plate.

4. The water turbine main shaft sealing rubber block according to claim 1, wherein: the number of the water drainage holes (7) is 2-4, and the water drainage holes (7) are uniformly distributed.

5. The water turbine main shaft sealing rubber block according to claim 1, wherein: the lubricating water tank (6) is positioned on the middle side above the annular wall of the sealing rubber block (3).