CN211397763U

CN211397763U - Bearing oil groove respirator of hydroelectric generating set

Info

Publication number: CN211397763U
Application number: CN201922299501.5U
Authority: CN
Inventors: 杨举; 王庆书; 吴定平; 周飞虎; 侯俊龙
Original assignee: China Yangtze Power Co Ltd
Current assignee: China Yangtze Power Co Ltd
Priority date: 2019-12-19
Filing date: 2019-12-19
Publication date: 2020-09-01
Anticipated expiration: 2029-12-19

Abstract

The utility model provides a hydroelectric set bearing oil groove respirator, it includes casing, closed tube and first filter core and second filter core, through set up first filter core and second filter core in the casing, lies in and sets up the hybrid chamber between first filter core and the second filter core, through closed tube and generating set oil groove end cover UNICOM with casing lower part UNICOM, the hybrid chamber and oil groove UNICOM regulated pressure filter oil gas through first filter core and second filter core. The utility model overcomes the oil mist spills over and pollutes the unit when former hydroelectric generating set oil groove pressure is uneven, influences the stable problem of unit operation, has simple structure, and the oil mist can not leak when pressure is uneven, and non-staining unit equipment improves unit operating stability's characteristics.

Description

Bearing oil groove respirator of hydroelectric generating set

Technical Field

The utility model belongs to the technical field of hydroelectric generation, a hydroelectric set bearing oil groove respirator is related to.

Background

Each bearing of the water turbine generator set is a key part of the hydroelectric power generation equipment, and generally depends on thin oil for lubrication and heat dissipation, and a lubricating medium is turbine oil (turbine oil). Bearing oil groove splendid attire a quantitative turbine oil, the bearing is rotatory all to be installed in the oil groove with fixed part, and the oil groove is relative sealed state. Due to factors such as high-speed rotation of components, flowing of steam turbine oil, volatilization and accumulation of oil mist and the like, when a unit operates, the internal pressure and the external pressure of an oil groove are unbalanced, and a series of problems such as overlarge fluctuation of liquid level in the oil groove, oil throwing and the like can occur. Therefore, a breather needs to be arranged on the oil tank cover to balance the internal and external pressures of the oil tank.

At present, the mainstream respirator achieves the effects of breathing and flat pressure by communicating the inside and the outside of an oil groove, only measures such as mutually staggered baffles are arranged inside the respirator, and the like are tried to reduce or avoid the leakage of oil mist in the oil groove, but practice shows that the respirator is still a direct channel for the leakage of the oil mist. The oil mist is attached to the surfaces of core equipment such as a stator and a rotor of a generator after leaking from the respirator, thereby influencing the safe and stable operation of the unit and polluting the environment.

Disclosure of Invention

The utility model aims to solve the technical problem that a hydroelectric set bearing oil groove respirator is provided, moreover, the steam generator is simple in structure, adopt and set up first filter core and second filter core in the casing, be located and set up the hybrid chamber between first filter core and the second filter core, with the UNICOM of casing lower part UNICOM's UNICOM of UNICOM's pipe and generating set oil groove end cover, hybrid chamber and oil groove UNICOM regulated pressure, first filter core and second filter core filter oil gas, the oil mist can not leak when pressure is uneven, non-staining unit equipment, improve unit operating stability.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: a bearing oil groove breather of a hydroelectric generating set comprises a shell, a communicating pipe, a first filter element and a second filter element; first filter core and second filter core are located the casing, set up the hybrid chamber between first filter core and second filter core, and the intercommunication pipe is located casing downside and hybrid chamber UNICOM.

The shell comprises a hollow double-wall annular cylinder body consisting of an inner cylinder and an outer cylinder, and a vent hole is formed in the center of the upper side of the shell.

The inner cylinder is a hollow cylinder body and is communicated with the mixing cavity.

The bottom of the outer cylinder is provided with a support rod which is connected with the bottom of the inner cylinder.

The communicating pipe is a hollow pipeline, and a flange is arranged at the lower end of the communicating pipe.

The first filter element and the second filter element are oil-gas separation filter cylinders.

The upper part of the shell is provided with a sealing plate which seals the end surfaces of the first filter element and the second filter element.

A bearing oil groove breather of a hydroelectric generating set comprises a shell, a communicating pipe, a first filter element and a second filter element; first filter core and second filter core are located the casing, set up the hybrid chamber between first filter core and second filter core, and the intercommunication pipe is located casing downside and hybrid chamber UNICOM. Simple structure, during the use, through set up first filter core and second filter core in the casing, lie in and set up the hybrid chamber between first filter core and the second filter core, through the closed tube with casing lower part UNICOM and generating set oil groove end cover UNICOM, the hybrid chamber adjusts pressure with oil groove UNICOM, filters oil gas through first filter core and second filter core, the oil mist can not leak when pressure is uneven, non-staining unit equipment improves unit operating stability.

In a preferred scheme, the shell comprises a hollow double-wall annular cylinder body consisting of an inner cylinder and an outer cylinder, and a vent hole is formed in the center of the upper side of the shell. The structure is simple, when the filter is used, the first filter element is positioned in the inner barrel, the second filter element is positioned in the outer barrel, when positive pressure occurs in the pressure change process, oil mist in the oil groove firstly enters the first filter element and then enters the second filter element, after the oil mist is separated, air is discharged from the vent hole, and oil gas is blocked by the first filter element and the second filter element; when negative pressure occurs, air enters the first filter element and the second filter element from the vent hole once, and then enters the oil groove to adjust the pressure, so that the internal pressure and the external pressure of the oil groove are automatically kept balanced.

In a preferred scheme, the inner cylinder is a hollow cylinder body and is communicated with the mixing cavity. Simple structure, during the use, the inner tube of fretwork is favorable to the oil mist to get into first filter core separation, perhaps reentrant oil groove pressure regulation behind the outside fresh air entering first filter core.

In a preferred scheme, a support rod is arranged at the bottom of the outer cylinder and connected with the bottom of the inner cylinder. The structure is simple, when in use, the inner cylinder is connected with the outer cylinder through the support rod, and the inner cylinder is supported by the support rod.

In a preferred scheme, the communicating pipe is a hollow pipeline, and a flange is arranged at the lower end of the communicating pipe. Simple structure, during the installation, through being connected with the unit oil groove lid with the flange that the closed tube is connected, the installation is dismantled conveniently, is convenient for maintain.

In a preferred scheme, the first filter element and the second filter element are oil-gas separation filter cylinders. Simple structure, the first filter core and the second filter core of straining a section of thick bamboo for oil-gas separation have better oil mist and gaseous separation function, can filter when pressure increase oil mist is excessive, hinder impurity in the air to enter into in the oil groove when pressure reduces.

In a preferred scheme, a sealing plate is arranged at the upper part of the shell and used for sealing the end faces of the first filter element and the second filter element. Simple structure, during the use, the shrouding that is located casing upper portion seals the terminal surface of first filter core and second filter core, makes the air can only pass through the air vent business turn over in casing center.

Drawings

The invention will be further explained with reference to the following figures and examples:

fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a front view of fig. 1.

Fig. 3 is a schematic top view of fig. 2.

Fig. 4 is a schematic bottom view of fig. 2.

Fig. 5 is a schematic cross-sectional view at a-a of fig. 2.

In the figure: the filter comprises a shell 1, an inner barrel 11, an outer barrel 12, a vent hole 13, a support rod 14, a communicating pipe 2, a flange 21, a first filter element 3, a second filter element 4, a mixing cavity 5 and a sealing plate 6.

Detailed Description

As shown in fig. 1 to 5, a bearing oil groove breather of a hydroelectric generating set comprises a shell 1, a communicating pipe 2, a first filter element 3 and a second filter element 4; first filter core 3 and second filter core 4 are located casing 1, set up mixing chamber 5 between first filter core 3 and second filter core 4, and the intercommunication pipe 2 is located casing 1 downside and mixing chamber 5 UNICOM. Simple structure, during the use, through set up first filter core 3 and second filter core 4 in casing 1, be located and set up mixing chamber 5 between first filter core 3 and the second filter core 4, through the closed tube 2 and generating set oil groove end cover UNICOM with 1 lower part UNICOM of casing, mixing chamber 5 and oil groove UNICOM regulated pressure, filter oil gas through first filter core 3 and second filter core 4, the oil mist can not leak when pressure is uneven, non-staining unit equipment, improvement unit operating stability.

In a preferred scheme, the shell 1 comprises a hollow double-wall annular cylinder body consisting of an inner cylinder 11 and an outer cylinder 12, and a vent hole 13 is arranged at the center of the upper side. The structure is simple, when the filter is used, the first filter element 3 is positioned in the inner barrel 11, the second filter element 4 is positioned in the outer barrel 12, when positive pressure occurs in the pressure change process, oil mist in the oil groove firstly enters the first filter element 3 and then enters the second filter element 4, after the oil mist is separated, air is discharged from the vent hole 13, and oil gas is blocked by the first filter element 3 and the second filter element 4; when negative pressure occurs, air enters the first filter element 3 and the second filter element 4 from the vent hole 13 once, and then enters the oil groove to adjust the pressure, so that the internal and external pressures of the oil groove are automatically kept balanced.

In the preferred scheme, the inner cylinder 11 is a hollow cylinder body and is communicated with the mixing cavity 5. Simple structure, during the use, the inner tube 11 of fretwork is favorable to the oil mist to get into the separation of first filter core 3, perhaps outside fresh air gets into and then gets into oil groove regulation pressure behind the first filter core 3.

In a preferred scheme, a support rod 14 is arranged at the bottom of the outer cylinder 12 and is connected with the bottom of the inner cylinder 11. The structure is simple, when in use, the inner cylinder 11 and the outer cylinder 12 are connected by the support rod 14, and the support rod 14 supports the inner cylinder 11.

In a preferred scheme, the communicating pipe 2 is a hollow pipeline, and a flange 21 is arranged at the lower end of the communicating pipe. Simple structure, during the installation, through being connected with unit oil groove cover with flange 21 that closed tube 2 is connected, the installation is dismantled conveniently, is convenient for maintain.

In a preferred scheme, the first filter element 3 and the second filter element 4 are oil-gas separation filter cylinders. Simple structure, first filter core 3 and the second filter core 4 of straining a section of thick bamboo for oil-gas separation have better oil mist and gaseous separation function, can filter when pressure increase oil mist is excessive, hinder impurity in the air to enter into the oil groove when pressure reduces.

In a preferred scheme, a sealing plate 6 is arranged at the upper part of the shell 1 and used for sealing the end surfaces of the first filter element 3 and the second filter element 4. The structure is simple, when in use, the closing plate 6 on the upper part of the shell 1 seals the end surfaces of the first filter element 3 and the second filter element 4, so that air can only enter and exit through the vent hole 13 in the center of the shell 1.

When installing and using, set up first filter core 3 and second filter core 4 in casing 1, be located and set up mixing chamber 5 between first filter core 3 and the second filter core 4, with the UNICOM pipe 2 of casing 1 lower part UNICOM and generating set oil groove end cover UNICOM, mixing chamber 5 and oil groove UNICOM regulated pressure, first filter core 3 and second filter core 4 filter oil gas, the oil mist can not leak when pressure is uneven, the non-staining unit equipment improves unit operating stability.

When the filter is used, the first filter element 3 is positioned in the inner cylinder 11, the second filter element 4 is positioned in the outer cylinder 12, when positive pressure occurs in the pressure change process, oil mist in the oil groove firstly enters the first filter element 3 and then enters the second filter element 4, after the oil mist is separated, air is discharged from the vent hole 13, and oil gas is blocked by the first filter element 3 and the second filter element 4; when negative pressure occurs, air enters the first filter element 3 and the second filter element 4 from the vent hole 13 once, and then enters the oil groove to adjust the pressure, so that the internal and external pressures of the oil groove are automatically kept balanced.

During the use, the inner tube 11 of fretwork is favorable to the oil mist to get into first filter core 3 separation, perhaps outside fresh air gets into first filter core 3 back reentrant oil groove regulation pressure again.

When in use, the inner cylinder 11 and the outer cylinder 12 are connected by the support rod 14, and the support rod 14 supports the inner cylinder 11.

During installation, the flange 21 connected with the communicating pipe 2 is connected with the oil tank cover of the unit, so that the installation and the disassembly are convenient, and the maintenance is convenient.

The first filter element 3 and the second filter element 4 of the oil-gas separation filter cylinder have good oil mist and gas separation functions, can filter when oil mist overflows due to pressure increase, and can prevent impurities in air from entering an oil groove when the pressure is reduced.

When in use, the closing plate 6 on the upper part of the shell 1 seals the end surfaces of the first filter element 3 and the second filter element 4, so that air can only enter and exit through the vent hole 13 in the center of the shell 1.

The above embodiments are merely preferred technical solutions of the present invention, and should not be considered as limitations of the present invention, and the features in the embodiments and the examples in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention shall be defined by the claims and the technical solutions described in the claims, including the technical features of the equivalent alternatives as the protection scope. Namely, equivalent alterations and modifications within the scope of the invention are also within the scope of the invention.

Claims

1. The utility model provides a hydroelectric set bearing oil groove respirator, characterized by: the filter comprises a shell (1), a communicating pipe (2), a first filter element (3) and a second filter element (4); first filter core (3) and second filter core (4) are located casing (1), set up mixing chamber (5) between first filter core (3) and second filter core (4), and it is UNICOM with mixing chamber (5) that UNICOM's pipe (2) are located casing (1) downside.

2. The hydroelectric generating set bearing oil groove respirator of claim 1, wherein: the shell (1) comprises a hollow double-wall annular cylinder body consisting of an inner cylinder (11) and an outer cylinder (12), and a vent hole (13) is formed in the center of the upper side.

3. The hydroelectric generating set bearing oil groove respirator of claim 2, wherein: the inner cylinder (11) is a hollow cylinder body and communicated with the mixing cavity (5).

4. The hydroelectric generating set bearing oil groove respirator of claim 2, wherein: the bottom of the outer cylinder (12) is provided with a support rod (14) which is connected with the bottom of the inner cylinder (11).

5. The hydroelectric generating set bearing oil groove respirator of claim 1, wherein: the communicating pipe (2) is a hollow pipeline, and the lower end of the communicating pipe is provided with a flange (21).

6. The hydroelectric generating set bearing oil groove respirator of claim 1, wherein: the first filter element (3) and the second filter element (4) are oil-gas separation filter cylinders.

7. A hydroelectric generating set bearing oil groove respirator according to any one of claims 1 to 6, wherein: the upper part of the shell (1) is provided with a sealing plate (6) which seals the end faces of the first filter element (3) and the second filter element (4).