CN219159089U

CN219159089U - Oil stain prevention device for guide bearing of hydroelectric generating set

Info

Publication number: CN219159089U
Application number: CN202320008005.3U
Authority: CN
Inventors: 刘玮璘; 刘言冬
Original assignee: Qinghai Upper Yellow River Hydropower Development Co ltd Laxiwa Power Generation Branch; Xining Nanchuan Green Power Distribution Co ltd; Qinghai Huanghe Hydropower Development Co Ltd; Huanghe Hydropower Development Co Ltd
Current assignee: Qinghai Upper Yellow River Hydropower Development Co ltd Laxiwa Power Generation Branch; Xining Nanchuan Green Power Distribution Co ltd; Qinghai Huanghe Hydropower Development Co Ltd; Huanghe Hydropower Development Co Ltd
Priority date: 2023-01-03
Filing date: 2023-01-03
Publication date: 2023-06-09
Anticipated expiration: 2033-01-03

Abstract

The application discloses grease proofing dirty device of hydroelectric set guide bearing, include: a seat ring; the oil mist respirator is arranged on the seat ring; the sealing ring is arranged on the left side of the seat ring; the oil return hole is arranged at the left side of the seat ring. The device reduces the risk of environmental pollution caused by the discharge of oil mist into water, improves civilized production, and prolongs the service life of the generator; the sealing teeth are formed by adopting a nonmetallic high polymer composite material, are in direct contact with the rotating shaft, have the characteristics of wear resistance, insulation and self lubrication, do not grind the shaft, do not generate shaft temperature rise, do not pollute lubricating oil, and are zero-clearance sealing; the device is provided with 4 sponge filter screen type oil mist respirators on each sealing benefit plate for balancing the internal and external pressure of the oil groove, and when the oil in the oil groove is shared through the baffle plates and the filter screens in the respirators, the oil drops are cooled to flow back to the oil groove, and clean air is discharged.

Description

Oil stain prevention device for guide bearing of hydroelectric generating set

Technical Field

The utility model relates to the field of energy power, in particular to an oil stain preventing device for a guide bearing of a hydroelectric generating set.

Background

In recent years, the outward throwing of bearing oil liquid and the overflow of oil mist of each part of a hydropower station unit are aggravated, the aging of a stator bar and an iron core of a generator is accelerated, the safe and stable operation of the generator is threatened, the civilized production is influenced, meanwhile, the risk that the oil mist is discharged into a water body to pollute the environment exists, and the service life of the generator is short.

Disclosure of Invention

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview, and is intended to neither identify key/critical elements nor delineate the scope of such embodiments, but is intended as a prelude to the more detailed description that follows.

The embodiment of the disclosure provides an oil stain prevention device for a guide bearing of a hydroelectric generating set, comprising:

a seat ring;

an oil mist respirator mounted on the seat ring;

a seal ring mounted on the left side of the seat ring;

and the oil return hole is arranged at the left side of the seat ring.

Further, the sealing ring comprises a contact sealing ring and a positioning sealing ring, wherein the positioning sealing ring is positioned at the lower part of the contact sealing ring, and the contact sealing ring is formed by splicing sealing teeth.

Further, the seat ring is made of an aluminum alloy material.

Further, the oil mist respirator is connected to the seat ring through two bolts.

Furthermore, the contact type sealing ring is two or three, and is made of a nonmetallic high polymer composite material.

Further, a spring piece is arranged on the back of the sealing tooth.

Further, the oil mist respirators are sponge filter screen type oil mist respirators, and the number of the oil mist respirators is four.

Further, the positioning sealing ring is made of polytetrafluoroethylene material.

Further, a sealing ring groove is formed in the seat ring.

The embodiment of the disclosure provides a hydroelectric set guide bearing grease proofing dirty device, can realize following technical effect:

the device reduces the risk of environmental pollution caused by the discharge of oil mist into water, improves civilized production, and prolongs the service life of the generator; the sealing teeth are formed by adopting a nonmetallic high polymer composite material, are in direct contact with the rotating shaft, have the characteristics of wear resistance, insulation and self lubrication, do not grind the shaft, do not generate shaft temperature rise, do not pollute lubricating oil, and are zero-clearance sealing; the device is provided with 4 sponge filter screen type oil mist respirators on each sealing beneficial plate for balancing the internal and external pressure of the oil tank, and when the oil in the oil tank passes through the baffle plates and the filter screens in the respirators, the oil is cooled into oil drops to flow back to the oil tank, and clean air is discharged.

Drawings

The above and other objects and features of the present utility model will become more apparent from the following description taken in conjunction with the accompanying drawings which illustrate by way of example an example:

fig. 1 is a schematic illustration of an oil stain prevention device for a guide bearing of a hydroelectric generating set according to an embodiment of the disclosure.

In the figure: 1. a contact seal ring; 2. positioning a sealing ring; 3. an oil return hole; 4. an oil mist respirator; 5. a seat ring.

Detailed Description

So that the manner in which the features and techniques of the disclosed embodiments can be understood in more detail, a more particular description of the embodiments of the disclosure, briefly summarized below, may be had by reference to the appended drawings, which are not intended to be limiting of the embodiments of the disclosure. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may still be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawing.

Referring to fig. 1, an embodiment of the present disclosure provides an oil stain preventing device for a guide bearing of a hydroelectric generating set, including: a seat ring 5; an oil mist respirator 4 mounted on the seat 5; a seal ring mounted on the left side of the seat ring 5; and an oil return hole 3 is arranged at the left side of the seat ring 5.

In some embodiments of the utility model, the sealing ring comprises a contact sealing ring 1 and a positioning sealing ring 2, wherein the positioning sealing ring 2 is positioned at the lower part of the contact sealing ring 1, and the contact sealing ring 1 is formed by splicing sealing teeth.

In some embodiments of the utility model, the seat ring 5 is composed of an aluminum alloy material.

In some embodiments of the utility model, the oil mist respirator 4 is attached to the seat 5 by two bolts.

In some embodiments of the present utility model, the contact seal ring 1 is two or three, and the contact seal ring 1 is made of a non-metal polymer composite material.

In some embodiments of the utility model, the back of the seal tooth is fitted with a leaf spring.

In some embodiments of the present utility model, the oil mist respirator 4 is a sponge filter type oil mist respirator, and the oil mist respirator 4 is four.

In some embodiments of the utility model, the positioning seal ring 2 is made of a polytetrafluoroethylene material.

In some embodiments of the utility model, the seat ring 5 is provided with a sealing ring groove.

In some embodiments of the utility model, the positioning seal ring 2 is made of polytetrafluoroethylene material, and maintains a small clearance with the shaft, so as to prevent the lubricating oil from directly impacting the contact seal teeth and prevent oil mist from escaping.

In some embodiments of the present utility model, the ring groove 5 is provided with the seal ring groove for mounting a seal ring.

In some embodiments of the utility model, the problem that oil mist escapes and enters the generator to accelerate the stator bar, so that the iron core is aged, and the generator is severely hypochondriac to safely operate is mainly solved. Meanwhile, the risk that the slurry oil is discharged into water along with water leakage and pollutes the environment is solved.

In fig. 1, the right part of the seat ring 5 is L-shaped, the right side of the seat ring is cylindrical, a groove is formed on the seat ring, and an oil mist respirator 4 is arranged on the seat ring; an oil mist respirator 4 mounted on the seat 5, the oil mist respirator 4 being cylindrical; the sealing ring is arranged on the sealing teeth on the left side of the seat ring 5 and is round; the oil return hole 3 is arranged at the bottom of the sealing tooth at the left side of the seat ring 5 and can remove generated oil stains. The left part of the seat 5 is seen in left view in a circular ring shape. The seat ring 5 is made of aluminum alloy, and has the characteristics of attractive appearance, elegant appearance, portability, difficult deformation and the like. The seat ring 5 is divided into 4 sections, and each section of the seat ring 5 is connected and positioned by adopting positioning fastening bolts and connected by bolts; the oil return holes 3 are formed in the sealing lower portion of the seat ring 5, and the oil stored between the seat rings can be returned to the oil groove through the oil return holes 3. The seat ring 5 is provided with 2 or 3 contact seal rings 1 and positioning seal rings 2, each contact seal ring 1 and each positioning seal ring 2 is composed of a plurality of seal teeth, is made of a nonmetallic high polymer composite material, is in direct contact with a rotating shaft, has the characteristics of wear resistance, insulation and self lubrication, does not grind the shaft, does not generate shaft temperature rise, does not pollute lubricating oil, and is zero-clearance seal. The back of each sealing tooth of the contact type sealing ring 1 and the positioning sealing ring 2 is provided with 2 stainless steel spring pieces, the sealing teeth can radially float along with the shaft, the sensitivity is high, the unilateral floating quantity is unilateral lmm of the forward quantity, the unilateral lmm of the backward quantity is 2.5mm, the sealing teeth can follow the swing of the shaft, always keep concentric with the shaft, and the zero clearance state is maintained. The sealing teeth of the contact type sealing ring 1 and the positioning sealing ring 2 are connected by adopting a lap joint process. The lap joint amount of the seal check connection at the joint of the seat ring 5 is 1.5mm, so that the seal check connection is designed to prevent the seat ring 5 from being damaged due to too long seal check extension during installation, and can form a labyrinth shape to prevent oil leakage. The lap joint amount of the seal responsibility connection in the seat ring 5 is 7mm, a gap of 0.5mm is reserved between the seal teeth, and the seal teeth are circumferentially contracted when the seal points advance, so that the seal points are prevented from being locked and can not advance. The sealing teeth contacted with the rotating shaft are made of non-metal multielement composite materials, and the material has the characteristics of wear resistance, oil resistance, high temperature resistance, aging resistance, chemical corrosion resistance, insulation and the like, and has a self-lubricating function. A circle of fixed sealing ring is also arranged below the contact type sealing teeth, the contact type sealing ring 1 and the positioning sealing ring 2 are processed by adopting a poly four-quadrant plate, and a small clearance is reserved between the contact type sealing ring and the pumping protection device, so that the direct impact of lubricating oil on the contact type sealing teeth can be prevented, and oil passengers are prevented from escaping. An oil mist respirator 4. And 4 sponge filter screen type oil mist respirators 4 are arranged on each sealing tooth and used for balancing the internal and external pressure of the oil tank, and when the oil in the oil tank passes through a baffle plate and a filter screen in the oil mist respirators 4, the oil is cooled into oil drops and flows back to the oil tank.

The device reduces the risk of environmental pollution caused by the discharge of oil mist into water, improves civilized production, and prolongs the service life of the generator; the sealing teeth are formed by adopting a nonmetallic high polymer composite material, are in direct contact with the rotating shaft, have the characteristics of wear resistance, insulation and self lubrication, do not grind the shaft, do not generate shaft temperature rise, do not pollute lubricating oil, and are zero-clearance sealing; the device is provided with 4 sponge filter screen type oil mist respirators on each sealing beneficial plate for balancing the internal and external pressure of the oil tank, and when the oil in the oil tank passes through the baffle plates and the filter screens in the respirators, the oil is cooled into oil drops and flows back to the oil tank.

The above description and the drawings illustrate embodiments of the disclosure sufficiently to enable those skilled in the art to practice them. Other embodiments may include structural and other modifications. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in, or substituted for, those of others. The embodiments of the present disclosure are not limited to the structures that have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. The utility model provides a hydroelectric set guide bearing grease proofing dirty device which characterized in that includes:

a seat ring (5);

an oil mist respirator (4) mounted on the seat ring (5);

a sealing ring mounted on the left side of the seat ring (5);

and the oil return hole (3) is arranged at the left side of the seat ring (5).

2. The oil stain prevention device for the guide bearing of the hydroelectric generating set according to claim 1, wherein the sealing ring comprises a contact sealing ring (1) and a positioning sealing ring (2), the positioning sealing ring (2) is located at the lower part of the contact sealing ring (1), and the contact sealing ring (1) is formed by splicing sealing teeth.

3. The oil stain resistant device for the guide bearing of the water turbine generator set according to claim 1, wherein the seat ring (5) is made of an aluminum alloy material.

4. The hydraulic generator set guide bearing oil stain prevention device according to claim 1, wherein the oil mist respirator (4) is connected to the seat ring (5) through two bolts.

5. The oil stain prevention device for the guide bearing of the hydroelectric generating set according to claim 2, wherein the number of the contact type sealing rings (1) is two or three, and the contact type sealing rings (1) are made of non-metal high polymer composite materials.

6. The oil stain resistant device for the guide bearing of the hydroelectric generating set according to claim 2, wherein a spring piece is arranged on the back of the sealing tooth.

7. The oil stain prevention device for the guide bearing of the hydroelectric generating set according to claim 1, wherein the oil mist respirators (4) are sponge filter type oil mist respirators, and the number of the oil mist respirators (4) is four.

8. The oil stain resistant device for the guide bearing of the water turbine generator set according to claim 2, wherein the positioning sealing ring (2) is made of polytetrafluoroethylene material.

9. The oil stain resistant device for the guide bearing of the hydroelectric generating set according to claim 1, wherein the seat ring (5) is provided with a sealing ring groove.