CN215763244U

CN215763244U - Water guide oil basin sealing device

Info

Publication number: CN215763244U
Application number: CN202121859133.6U
Authority: CN
Inventors: 李海峰; 官永杰; 尹玉梅; 李世勇; 雷刚
Original assignee: Xinjiang Xinneng Development Co ltd Tuohai Hydroelectric Power Plant
Current assignee: Xinjiang Xinneng Development Co ltd Tuohai Hydroelectric Power Plant
Priority date: 2021-08-10
Filing date: 2021-08-10
Publication date: 2022-02-08
Anticipated expiration: 2031-08-10

Abstract

The utility model belongs to the technical field of hydroelectric power generation equipment, and particularly relates to a sealing device of a water guide oil basin, which comprises a joint sealing surface of the water guide oil basin, wherein a pair of joint sealing surfaces, which are far away from the corresponding positions on one side of a main shaft of a water turbine, are vertically provided with a first groove capable of accommodating a sealing strip, the top and the bottom of the water guide oil basin are respectively provided with a second groove at the end part of the first groove, which is used for accommodating a sealing gasket and a gasket pressing sheet, the gasket pressing sheets are tightly connected with the top and the bottom of the water guide oil basin through a bolt connection structure, the sealing gasket can completely cover the first groove, the bottom of the water guide oil basin is provided with a water retaining sealing component, the water retaining sealing component comprises a pair of semicircular rings which are in sealing and detachable connection, the tops of the pair of semicircular rings are respectively and horizontally provided with an arc-shaped water retaining plate, and the sealing strip is arranged in the inner surface of the semicircular rings, so that the sealing device is convenient to install and has good sealing effect, the cost is low, and the oil leakage of the water and oil guide basin can be effectively prevented, and the sealing water of the spindle can be prevented from entering the water and oil guide basin.

Description

Water guide oil basin sealing device

Technical Field

The utility model belongs to the technical field of hydroelectric power generation equipment, and particularly relates to a sealing device of a water guide oil basin.

Background

In the prior art, after a hydraulic generator of a hydraulic power plant is overhauled for many times, a joint sealing surface of a water guide oil basin of the hydraulic generator set is abraded, a gap is reserved after a joint connecting bolt is fastened, oil leakage is serious, leakage prevention treatment is performed by adopting a mode of smearing sealant on a joint surface of the oil basin for eliminating the faults, the sealing effect is not ideal, and the equipment oil leakage is serious due to uneven smearing of the sealant caused by unit vibration.

Disclosure of Invention

In view of the above problems, an object of the present invention is to provide a water guide oil basin sealing device which has a simple structure, is easy to install, has a good sealing effect, is low in cost, and can effectively prevent oil leakage from a water guide oil basin and prevent water in a main shaft seal water tank from entering the water guide oil basin along a main shaft rotating at a high speed, which may cause damage to a water guide bearing.

The purpose of the utility model is realized by the following technical scheme: the utility model provides a water leads oil pan sealing device, includes the sealed face of the joint close of water guide oil pan, and is a pair of the equal vertical first recess that can hold the sealing strip that is provided with in the corresponding position of keeping away from hydraulic turbine main shaft one side on the sealed face of joint close, water guide oil pan top and bottom are located first recess tip and are equipped with the second recess that holds sealing gasket and gasket preforming, the gasket preforming compresses tightly through bolted connection structure and connects the top and the bottom of water guide oil pan, sealing gasket can cover completely first recess, water guide oil pan bottom is equipped with manger plate seal assembly, manger plate seal assembly includes a pair of semicircle ring, and is a pair of semicircle ring both ends are all sealed through the mounting panel and can dismantle the connection, and are a pair of the equal level in semicircle ring top is provided with the arc breakwater, and is a pair of be provided with elastic sealing pad or sealing strip in the semicircle ring internal surface.

Furthermore, an annular groove capable of containing the sealing strip is arranged in the gap between the inner surfaces of the pair of semicircular rings, and an arc-shaped sealing strip is arranged in the annular groove.

Furthermore, a plurality of oil cooling holes in the pair of joint sealing surfaces are correspondingly provided with O-shaped grooves capable of accommodating O-shaped sealing rings.

Further, a plurality of O shape recess all is connected through the bar groove with first recess.

Furthermore, O-shaped sealing rings in the O-shaped grooves are integrally connected with the strip-shaped grooves and the sealing strips in the first grooves, so that the installation is convenient.

Further, a pair of the mounting plates at the two ends of the semicircular ring are provided with matched bolt through holes, and the mounting plates are connected through bolts with the bolt through holes.

Further, the bottoms of the pair of semicircular rings are horizontally provided with a second arc-shaped water baffle.

Furthermore, the arc-shaped water baffle plate positioned at the top of the pair of semicircular rings is fixedly connected to the bottom of the water guide oil basin through fastening bolts, and the water baffle sealing assembly and the water guide oil basin are prevented from relative displacement while the sealing surface of the water guide oil basin is reinforced to be connected.

When the utility model is used, the sealing strip is arranged in the first groove, after the joint sealing surface is installed in a joint manner, the sealing strip is sealed and clamped in the first grooves at the corresponding positions of the pair of joint sealing surfaces, the top and the bottom of the water oil guide basin are positioned at the end part of the first grooves and are provided with the second grooves for accommodating the sealing gasket and the gasket pressing sheet, the gasket pressing sheet is tightly connected at the top and the bottom of the water oil guide basin through a bolt connecting structure, the sealing gasket can completely cover the first grooves and can prevent oil from overflowing from the inner side of the sealing strip to the top or the bottom so as to prevent oil leakage, the bottom of the water oil guide basin is provided with a water retaining sealing component which can prevent water flow in the main shaft sealing water tank from flowing into the water oil guide basin along a main shaft rotating at high speed and causing the damage of a water guide bearing, the water retaining sealing component comprises a pair of semicircular rings, and the two ends of the pair of the semicircular rings are sealed and detachably connected through the mounting plates, the semicircular ring is simple in structure, not prone to damage, convenient to install and one pair of the semicircular ring is internally provided with an annular groove with a gap capable of containing a sealing strip, and the annular groove is internally provided with an annular sealing strip, so that water is effectively prevented from entering the water and oil guide basin.

Has the advantages that: the utility model has simple structure, convenient installation, good sealing effect and low cost, and can effectively prevent the water guide oil basin from leaking oil and prevent water flow in the main shaft sealed water tank from entering the water guide oil basin along the main shaft rotating at high speed to cause the damage of the water guide bearing.

Drawings

The specific structure of the application is given by the following figures and examples:

FIG. 1: the structure schematic diagram of the joint sealing surface of embodiment 1 of the utility model;

FIG. 2: the installation schematic diagram of the water oil guide basin and the water retaining seal assembly on the main shaft of the water turbine in the embodiment 1 of the utility model;

FIG. 3: the structure schematic diagram of the water stop sealing component in embodiment 1 of the utility model;

FIG. 4: the installation position of the second groove in embodiment 1 of the utility model is shown schematically;

FIG. 5: the structure schematic diagram of the joint sealing surface in embodiment 2 of the utility model.

In the figure: 1. the hydraulic turbine comprises a water guide oil basin, a water turbine main shaft 10, a joint sealing surface 11, a gasket 12, a first groove 13, a sealing gasket 14, a gasket pressing sheet 15, a second groove 16, a bolt connecting structure 17, a water retaining sealing assembly 111, an oil cooling hole 112, an O-shaped groove 113, a strip groove 114, an O-shaped sealing ring 171, a semicircular ring 172, an installation plate 173, an arc-shaped water retaining plate 174, an annular groove 175, an arc-shaped sealing strip 176, a bolt through hole 177 and an arc-shaped water retaining plate II.

Detailed Description

The following is a detailed description of the present invention for further explanation. The utility model is not limited to the claims, and all equivalent structures or equivalent processes that can be directly or indirectly applied to other related technical fields using the contents of the specification and the drawings are included in the scope of the utility model.

In the present invention, for convenience of description, the description of the relative positional relationship of the components is described according to the layout of the drawings in the specification, such as: the positional relationship of up, down, left, right, etc. is determined in accordance with the layout direction in the drawings of the specification.

Embodiment 1, referring to fig. 1, 2, 3, and 4, a water guiding oil pan sealing device includes a joint sealing surface 11 of a water guiding oil pan 1, a pair of first grooves 12 for accommodating sealing strips are vertically disposed on corresponding positions of one side of the joint sealing surface 11 away from a main shaft 10 of a water turbine, second grooves 15 for accommodating a sealing gasket 13 and a gasket pressing sheet 14 are disposed at ends of the first grooves 12 at the top and bottom of the water guiding oil pan 1, the gasket pressing sheet 14 is tightly connected to the top and bottom of the water guiding oil pan 1 through a bolt connection structure 16, the sealing gasket 13 can completely cover the first grooves 12, a water retaining seal assembly 17 is disposed at the bottom of the water guiding oil pan 1, the water retaining seal assembly 17 includes a pair of semi-circular rings 171, two ends of the pair of semi-circular rings 171 are both sealingly and detachably connected through a mounting plate 172, an arc-shaped water retaining plate 173 is horizontally disposed at the top of the pair of semi-circular rings 171, an annular groove 174 for accommodating a sealing strip is arranged in the inner surface of the pair of semi-circular rings 171 at a gap, and an arc-shaped sealing strip 175 is arranged in the annular groove 174.

It is a pair of all be equipped with matched with bolt through-hole 176 on the mounting panel 172 at semicircle ring 171 both ends, mounting panel 172 passes through bolt through-hole 176 bolted connection, and is a pair of semicircle ring 171 bottom level is provided with two 177 of arc breakwaters, is located a pair of semicircle ring 171 top arc breakwater 173 is in through the fastening bolt rigid coupling water oil guide basin bottom.

When the utility model is used, the sealing strip is arranged in the first groove 12, after the joint sealing surface 11 is installed in a joint way, the sealing strip is sealed and clamped in the first groove 12 at the corresponding position of the pair of joint sealing surfaces 11, the top and the bottom of the water oil guide basin 1 are positioned at the end part of the first groove 12 and are provided with the second grooves 15 for accommodating the sealing gasket 13 and the gasket pressing sheet 14, the gasket pressing sheet 14 is tightly connected at the top and the bottom of the water oil guide basin 1 through the bolt connecting structure 16, the sealing gasket 13 can completely cover the first groove 12 and can prevent oil from overflowing from the inner side of the sealing strip to the top or the bottom, thereby preventing the oil leakage phenomenon, the bottom of the water oil guide basin 1 is provided with the water retaining sealing component 17, the water retaining sealing component 17 is arranged on the main shaft of a wheel turbine, thereby preventing the water flow in the main shaft sealing water tank from flowing into the water oil guide basin along the main shaft rotating at high speed, lead to the water guide bearing to damage, the manger plate seal assembly 17 includes a pair of semicircle ring 171, and is a pair of semicircle ring 171 both ends are all sealed through mounting panel 172 and can be dismantled the connection, and are a pair of the equal level in semicircle ring 171 top is provided with arc breakwater 173, and simple structure, not fragile, and simple to operate, and is a pair of be equipped with the ring channel 174 that the clearance can hold the sealing strip in the semicircle ring 171 internal surface, be equipped with annular sealing strip 175 in the ring channel 174, work as can effectively prevent that water from scurrying into in the water guide oil basin when the semicircle ring 171 installation is embraced on the hydraulic turbine main shaft.

In embodiment 2, referring to fig. 5, a plurality of O-shaped grooves 112 capable of accommodating O-shaped sealing rings are correspondingly formed in the outer sides of a plurality of oil cooling holes 111 in a pair of joint sealing surfaces 11, the plurality of O-shaped grooves 112 are connected with a first groove 12 through a strip-shaped groove 113, and an O-shaped sealing ring 114 in the O-shaped groove 112 is integrally connected with the strip-shaped groove 113 and a sealing strip in the first groove 12, so that the installation is convenient.

Claims

1. A sealing device of a water guide oil basin is characterized by comprising a joint sealing surface of the water guide oil basin, a pair of first grooves capable of containing sealing strips are vertically arranged at corresponding positions on the joint sealing surface far away from one side of a main shaft of a water turbine, second grooves capable of containing sealing gaskets and gasket pressing sheets are arranged at the top and the bottom of the water guide oil basin and positioned at the end parts of the first grooves, the gasket pressing sheets are tightly pressed and connected to the top and the bottom of the water and oil guide basin through a bolt connection structure, the sealing gasket can completely cover the first groove, the bottom of the water guide oil basin is provided with a water retaining sealing component, the water retaining seal assembly comprises a pair of semicircular rings, the two ends of each semicircular ring are sealed through mounting plates and detachably connected, the top of each semicircular ring is horizontally provided with an arc-shaped water retaining plate, and each semicircular ring is internally provided with an elastic sealing gasket or a sealing strip.

2. The water conduction oil pan sealing device of claim 1, wherein an annular groove for accommodating the sealing strip is formed in the inner surface of each of the pair of semicircular rings at a gap, and an arc-shaped sealing strip is arranged in the annular groove.

3. The water guide oil pan sealing device as claimed in claim 1 or 2, wherein a plurality of oil cooling holes in a pair of joint sealing surfaces are respectively provided with an O-ring groove for receiving an O-ring at the outer side thereof.

4. A water deflector seal according to claim 3, in which a plurality of said O-grooves are connected to the first groove by a strip.

5. The water conduction basin seal of claim 4 wherein the O-ring seal in the O-ring groove is integrally connected to the strip groove and the seal in the first groove.

6. A water conduction oil pan sealing device as claimed in claim 1, wherein the mounting plates at both ends of a pair of said semi-circular rings are provided with matching bolt through holes, and said mounting plates are bolted through the bolt through holes.

7. The water guide oil pan sealing device of claim 1, wherein a pair of the semicircular ring bottoms are horizontally provided with a second arc-shaped water baffle.

8. The water deflector seal assembly of claim 1, wherein the arcuate water dams at the top of the pair of semi-circular rings are secured to the bottom of the water deflector by fastening bolts.